Project Andio

.gitmodules

@@ -3,7 +3,7 @@
     url = https://github.com/benhoyt/inih.git
 [submodule "cubeb"]
     path = externals/cubeb
-    url = https://github.com/kinetiknz/cubeb.git
+    url = https://github.com/mozilla/cubeb.git
 [submodule "dynarmic"]
     path = externals/dynarmic
     url = https://github.com/MerryMage/dynarmic.git

src/audio_core/CMakeLists.txt

@@ -1,54 +1,218 @@
 add_library(audio_core STATIC
-    algorithm/filter.cpp
-    algorithm/filter.h
-    algorithm/interpolate.cpp
-    algorithm/interpolate.h
-    audio_out.cpp
-    audio_out.h
-    audio_renderer.cpp
-    audio_renderer.h
-    behavior_info.cpp
-    behavior_info.h
-    buffer.h
-    codec.cpp
-    codec.h
-    command_generator.cpp
-    command_generator.h
-    common.h
-    delay_line.cpp
-    delay_line.h
-    effect_context.cpp
-    effect_context.h
-    info_updater.cpp
-    info_updater.h
-    memory_pool.cpp
-    memory_pool.h
-    mix_context.cpp
-    mix_context.h
-    null_sink.h
-    sink.h
-    sink_context.cpp
-    sink_context.h
-    sink_details.cpp
-    sink_details.h
-    sink_stream.h
-    splitter_context.cpp
-    splitter_context.h
-    stream.cpp
-    stream.h
-    voice_context.cpp
-    voice_context.h
-
-    $<$<BOOL:${ENABLE_CUBEB}>:cubeb_sink.cpp cubeb_sink.h>
-    $<$<BOOL:${ENABLE_SDL2}>:sdl2_sink.cpp sdl2_sink.h>
+    audio_core.cpp
+    audio_core.h
+    audio_event.h
+    audio_event.cpp
+    audio_render_manager.cpp
+    audio_render_manager.h
+    audio_in_manager.cpp
+    audio_in_manager.h
+    audio_out_manager.cpp
+    audio_out_manager.h
+    audio_manager.cpp
+    audio_manager.h
+    common/audio_renderer_parameter.h
+    common/common.h
+    common/feature_support.h
+    common/wave_buffer.h
+    common/workbuffer_allocator.h
+    device/audio_buffer.h
+    device/audio_buffers.h
+    device/device_session.cpp
+    device/device_session.h
+    in/audio_in.cpp
+    in/audio_in.h
+    in/audio_in_system.cpp
+    in/audio_in_system.h
+    out/audio_out.cpp
+    out/audio_out.h
+    out/audio_out_system.cpp
+    out/audio_out_system.h
+    renderer/adsp/adsp.cpp
+    renderer/adsp/adsp.h
+    renderer/adsp/audio_renderer.cpp
+    renderer/adsp/audio_renderer.h
+    renderer/adsp/command_buffer.h
+    renderer/adsp/command_list_processor.cpp
+    renderer/adsp/command_list_processor.h
+    renderer/audio_device.cpp
+    renderer/audio_device.h
+    renderer/audio_renderer.h
+    renderer/audio_renderer.cpp
+    renderer/behavior/behavior_info.cpp
+    renderer/behavior/behavior_info.h
+    renderer/behavior/info_updater.cpp
+    renderer/behavior/info_updater.h
+    renderer/command/data_source/adpcm.cpp
+    renderer/command/data_source/adpcm.h
+    renderer/command/data_source/decode.cpp
+    renderer/command/data_source/decode.h
+    renderer/command/data_source/pcm_float.cpp
+    renderer/command/data_source/pcm_float.h
+    renderer/command/data_source/pcm_int16.cpp
+    renderer/command/data_source/pcm_int16.h
+    renderer/command/effect/aux_.cpp
+    renderer/command/effect/aux_.h
+    renderer/command/effect/biquad_filter.cpp
+    renderer/command/effect/biquad_filter.h
+    renderer/command/effect/capture.cpp
+    renderer/command/effect/capture.h
+    renderer/command/effect/compressor.cpp
+    renderer/command/effect/compressor.h
+    renderer/command/effect/delay.cpp
+    renderer/command/effect/delay.h
+    renderer/command/effect/i3dl2_reverb.cpp
+    renderer/command/effect/i3dl2_reverb.h
+    renderer/command/effect/light_limiter.cpp
+    renderer/command/effect/light_limiter.h
+    renderer/command/effect/multi_tap_biquad_filter.cpp
+    renderer/command/effect/multi_tap_biquad_filter.h
+    renderer/command/effect/reverb.cpp
+    renderer/command/effect/reverb.h
+    renderer/command/mix/clear_mix.cpp
+    renderer/command/mix/clear_mix.h
+    renderer/command/mix/copy_mix.cpp
+    renderer/command/mix/copy_mix.h
+    renderer/command/mix/depop_for_mix_buffers.cpp
+    renderer/command/mix/depop_for_mix_buffers.h
+    renderer/command/mix/depop_prepare.cpp
+    renderer/command/mix/depop_prepare.h
+    renderer/command/mix/mix.cpp
+    renderer/command/mix/mix.h
+    renderer/command/mix/mix_ramp.cpp
+    renderer/command/mix/mix_ramp.h
+    renderer/command/mix/mix_ramp_grouped.cpp
+    renderer/command/mix/mix_ramp_grouped.h
+    renderer/command/mix/volume.cpp
+    renderer/command/mix/volume.h
+    renderer/command/mix/volume_ramp.cpp
+    renderer/command/mix/volume_ramp.h
+    renderer/command/performance/performance.cpp
+    renderer/command/performance/performance.h
+    renderer/command/resample/downmix_6ch_to_2ch.cpp
+    renderer/command/resample/downmix_6ch_to_2ch.h
+    renderer/command/resample/resample.h
+    renderer/command/resample/resample.cpp
+    renderer/command/resample/upsample.cpp
+    renderer/command/resample/upsample.h
+    renderer/command/sink/device.cpp
+    renderer/command/sink/device.h
+    renderer/command/sink/circular_buffer.cpp
+    renderer/command/sink/circular_buffer.h
+    renderer/command/command_buffer.cpp
+    renderer/command/command_buffer.h
+    renderer/command/command_generator.cpp
+    renderer/command/command_generator.h
+    renderer/command/command_list_header.h
+    renderer/command/command_processing_time_estimator.cpp
+    renderer/command/command_processing_time_estimator.h
+    renderer/command/commands.h
+    renderer/command/icommand.h
+    renderer/effect/aux_.cpp
+    renderer/effect/aux_.h
+    renderer/effect/biquad_filter.cpp
+    renderer/effect/biquad_filter.h
+    renderer/effect/buffer_mixer.cpp
+    renderer/effect/buffer_mixer.h
+    renderer/effect/capture.cpp
+    renderer/effect/capture.h
+    renderer/effect/compressor.cpp
+    renderer/effect/compressor.h
+    renderer/effect/delay.cpp
+    renderer/effect/delay.h
+    renderer/effect/effect_context.cpp
+    renderer/effect/effect_context.h
+    renderer/effect/effect_info_base.h
+    renderer/effect/effect_reset.h
+    renderer/effect/effect_result_state.h
+    renderer/effect/i3dl2.cpp
+    renderer/effect/i3dl2.h
+    renderer/effect/light_limiter.cpp
+    renderer/effect/light_limiter.h
+    renderer/effect/reverb.h
+    renderer/effect/reverb.cpp
+    renderer/mix/mix_context.cpp
+    renderer/mix/mix_context.h
+    renderer/mix/mix_info.cpp
+    renderer/mix/mix_info.h
+    renderer/memory/address_info.h
+    renderer/memory/memory_pool_info.cpp
+    renderer/memory/memory_pool_info.h
+    renderer/memory/pool_mapper.cpp
+    renderer/memory/pool_mapper.h
+    renderer/nodes/bit_array.h
+    renderer/nodes/edge_matrix.cpp
+    renderer/nodes/edge_matrix.h
+    renderer/nodes/node_states.cpp
+    renderer/nodes/node_states.h
+    renderer/performance/detail_aspect.cpp
+    renderer/performance/detail_aspect.h
+    renderer/performance/entry_aspect.cpp
+    renderer/performance/entry_aspect.h
+    renderer/performance/performance_detail.h
+    renderer/performance/performance_entry.h
+    renderer/performance/performance_entry_addresses.h
+    renderer/performance/performance_frame_header.h
+    renderer/performance/performance_manager.cpp
+    renderer/performance/performance_manager.h
+    renderer/sink/circular_buffer_sink_info.cpp
+    renderer/sink/circular_buffer_sink_info.h
+    renderer/sink/device_sink_info.cpp
+    renderer/sink/device_sink_info.h
+    renderer/sink/sink_context.cpp
+    renderer/sink/sink_context.h
+    renderer/sink/sink_info_base.cpp
+    renderer/sink/sink_info_base.h
+    renderer/splitter/splitter_context.cpp
+    renderer/splitter/splitter_context.h
+    renderer/splitter/splitter_destinations_data.cpp
+    renderer/splitter/splitter_destinations_data.h
+    renderer/splitter/splitter_info.cpp
+    renderer/splitter/splitter_info.h
+    renderer/system.cpp
+    renderer/system.h
+    renderer/system_manager.cpp
+    renderer/system_manager.h
+    renderer/upsampler/upsampler_info.h
+    renderer/upsampler/upsampler_manager.cpp
+    renderer/upsampler/upsampler_manager.h
+    renderer/upsampler/upsampler_state.h
+    renderer/voice/voice_channel_resource.h
+    renderer/voice/voice_context.cpp
+    renderer/voice/voice_context.h
+    renderer/voice/voice_info.cpp
+    renderer/voice/voice_info.h
+    renderer/voice/voice_state.h
+    sink/cubeb_sink.cpp
+    sink/cubeb_sink.h
+    sink/null_sink.h
+    sink/sdl2_sink.cpp
+    sink/sdl2_sink.h
+    sink/sink.h
+    sink/sink_details.cpp
+    sink/sink_details.h
+    sink/sink_stream.h
 )
 
 create_target_directory_groups(audio_core)
 
-if (NOT MSVC)
+if (MSVC)
+    target_compile_options(audio_core PRIVATE
+        /we4242 # 'identifier': conversion from 'type1' to 'type2', possible loss of data
+        /we4244 # 'conversion': conversion from 'type1' to 'type2', possible loss of data
+        /we4245 # 'conversion': conversion from 'type1' to 'type2', signed/unsigned mismatch
+        /we4254 # 'operator': conversion from 'type1:field_bits' to 'type2:field_bits', possible loss of data
+        /we4456 # Declaration of 'identifier' hides previous local declaration
+        /we4457 # Declaration of 'identifier' hides function parameter
+        /we4458 # Declaration of 'identifier' hides class member
+        /we4459 # Declaration of 'identifier' hides global declaration
+    )
+else()
     target_compile_options(audio_core PRIVATE
         -Werror=conversion
         -Werror=ignored-qualifiers
+        -Werror=shadow
+        -Werror=unused-variable
 
         $<$<CXX_COMPILER_ID:GNU>:-Werror=unused-but-set-parameter>
         $<$<CXX_COMPILER_ID:GNU>:-Werror=unused-but-set-variable>
@@ -58,6 +222,9 @@ if (NOT MSVC)
 endif()
 
 target_link_libraries(audio_core PUBLIC common core)
+if (ARCHITECTURE_x86_64)
+    target_link_libraries(audio_core PRIVATE dynarmic)
+endif()
 
 if(ENABLE_CUBEB)
     target_link_libraries(audio_core PRIVATE cubeb)

src/audio_core/algorithm/filter.cpp

@@ -1,79 +0,0 @@
-// SPDX-FileCopyrightText: Copyright 2018 yuzu Emulator Project
-// SPDX-License-Identifier: GPL-2.0-or-later
-
-#define _USE_MATH_DEFINES
-
-#include <algorithm>
-#include <array>
-#include <cmath>
-#include <vector>
-#include "audio_core/algorithm/filter.h"
-#include "common/common_types.h"
-
-namespace AudioCore {
-
-Filter Filter::LowPass(double cutoff, double Q) {
-    const double w0 = 2.0 * M_PI * cutoff;
-    const double sin_w0 = std::sin(w0);
-    const double cos_w0 = std::cos(w0);
-    const double alpha = sin_w0 / (2 * Q);
-
-    const double a0 = 1 + alpha;
-    const double a1 = -2.0 * cos_w0;
-    const double a2 = 1 - alpha;
-    const double b0 = 0.5 * (1 - cos_w0);
-    const double b1 = 1.0 * (1 - cos_w0);
-    const double b2 = 0.5 * (1 - cos_w0);
-
-    return {a0, a1, a2, b0, b1, b2};
-}
-
-Filter::Filter() : Filter(1.0, 0.0, 0.0, 1.0, 0.0, 0.0) {}
-
-Filter::Filter(double a0_, double a1_, double a2_, double b0_, double b1_, double b2_)
-    : a1(a1_ / a0_), a2(a2_ / a0_), b0(b0_ / a0_), b1(b1_ / a0_), b2(b2_ / a0_) {}
-
-void Filter::Process(std::vector<s16>& signal) {
-    const std::size_t num_frames = signal.size() / 2;
-    for (std::size_t i = 0; i < num_frames; i++) {
-        std::rotate(in.begin(), in.end() - 1, in.end());
-        std::rotate(out.begin(), out.end() - 1, out.end());
-
-        for (std::size_t ch = 0; ch < channel_count; ch++) {
-            in[0][ch] = signal[i * channel_count + ch];
-
-            out[0][ch] = b0 * in[0][ch] + b1 * in[1][ch] + b2 * in[2][ch] - a1 * out[1][ch] -
-                         a2 * out[2][ch];
-
-            signal[i * 2 + ch] = static_cast<s16>(std::clamp(out[0][ch], -32768.0, 32767.0));
-        }
-    }
-}
-
-/// Calculates the appropriate Q for each biquad in a cascading filter.
-/// @param total_count The total number of biquads to be cascaded.
-/// @param index 0-index of the biquad to calculate the Q value for.
-static double CascadingBiquadQ(std::size_t total_count, std::size_t index) {
-    const auto pole =
-        M_PI * static_cast<double>(2 * index + 1) / (4.0 * static_cast<double>(total_count));
-    return 1.0 / (2.0 * std::cos(pole));
-}
-
-CascadingFilter CascadingFilter::LowPass(double cutoff, std::size_t cascade_size) {
-    std::vector<Filter> cascade(cascade_size);
-    for (std::size_t i = 0; i < cascade_size; i++) {
-        cascade[i] = Filter::LowPass(cutoff, CascadingBiquadQ(cascade_size, i));
-    }
-    return CascadingFilter{std::move(cascade)};
-}
-
-CascadingFilter::CascadingFilter() = default;
-CascadingFilter::CascadingFilter(std::vector<Filter> filters_) : filters(std::move(filters_)) {}
-
-void CascadingFilter::Process(std::vector<s16>& signal) {
-    for (auto& filter : filters) {
-        filter.Process(signal);
-    }
-}
-
-} // namespace AudioCore

src/audio_core/algorithm/filter.h

@@ -1,61 +0,0 @@
-// SPDX-FileCopyrightText: Copyright 2018 yuzu Emulator Project
-// SPDX-License-Identifier: GPL-2.0-or-later
-
-#pragma once
-
-#include <array>
-#include <vector>
-#include "common/common_types.h"
-
-namespace AudioCore {
-
-/// Digital biquad filter:
-///
-///          b0 + b1 z^-1 + b2 z^-2
-///  H(z) = ------------------------
-///          a0 + a1 z^-1 + b2 z^-2
-class Filter {
-public:
-    /// Creates a low-pass filter.
-    /// @param cutoff Determines the cutoff frequency. A value from 0.0 to 1.0.
-    /// @param Q Determines the quality factor of this filter.
-    static Filter LowPass(double cutoff, double Q = 0.7071);
-
-    /// Passthrough filter.
-    Filter();
-
-    Filter(double a0_, double a1_, double a2_, double b0_, double b1_, double b2_);
-
-    void Process(std::vector<s16>& signal);
-
-private:
-    static constexpr std::size_t channel_count = 2;
-
-    /// Coefficients are in normalized form (a0 = 1.0).
-    double a1, a2, b0, b1, b2;
-    /// Input History
-    std::array<std::array<double, channel_count>, 3> in;
-    /// Output History
-    std::array<std::array<double, channel_count>, 3> out;
-};
-
-/// Cascade filters to build up higher-order filters from lower-order ones.
-class CascadingFilter {
-public:
-    /// Creates a cascading low-pass filter.
-    /// @param cutoff Determines the cutoff frequency. A value from 0.0 to 1.0.
-    /// @param cascade_size Number of biquads in cascade.
-    static CascadingFilter LowPass(double cutoff, std::size_t cascade_size);
-
-    /// Passthrough.
-    CascadingFilter();
-
-    explicit CascadingFilter(std::vector<Filter> filters_);
-
-    void Process(std::vector<s16>& signal);
-
-private:
-    std::vector<Filter> filters;
-};
-
-} // namespace AudioCore

src/audio_core/algorithm/interpolate.cpp

@@ -1,232 +0,0 @@
-// SPDX-FileCopyrightText: Copyright 2018 yuzu Emulator Project
-// SPDX-License-Identifier: GPL-2.0-or-later
-
-#define _USE_MATH_DEFINES
-
-#include <algorithm>
-#include <climits>
-#include <cmath>
-#include <vector>
-
-#include "audio_core/algorithm/interpolate.h"
-#include "common/common_types.h"
-#include "common/logging/log.h"
-
-namespace AudioCore {
-
-constexpr std::array<s16, 512> curve_lut0{
-    6600,  19426, 6722,  3,     6479,  19424, 6845,  9,     6359,  19419, 6968,  15,    6239,
-    19412, 7093,  22,    6121,  19403, 7219,  28,    6004,  19391, 7345,  34,    5888,  19377,
-    7472,  41,    5773,  19361, 7600,  48,    5659,  19342, 7728,  55,    5546,  19321, 7857,
-    62,    5434,  19298, 7987,  69,    5323,  19273, 8118,  77,    5213,  19245, 8249,  84,
-    5104,  19215, 8381,  92,    4997,  19183, 8513,  101,   4890,  19148, 8646,  109,   4785,
-    19112, 8780,  118,   4681,  19073, 8914,  127,   4579,  19031, 9048,  137,   4477,  18988,
-    9183,  147,   4377,  18942, 9318,  157,   4277,  18895, 9454,  168,   4179,  18845, 9590,
-    179,   4083,  18793, 9726,  190,   3987,  18738, 9863,  202,   3893,  18682, 10000, 215,
-    3800,  18624, 10137, 228,   3709,  18563, 10274, 241,   3618,  18500, 10411, 255,   3529,
-    18436, 10549, 270,   3441,  18369, 10687, 285,   3355,  18300, 10824, 300,   3269,  18230,
-    10962, 317,   3186,  18157, 11100, 334,   3103,  18082, 11238, 351,   3022,  18006, 11375,
-    369,   2942,  17927, 11513, 388,   2863,  17847, 11650, 408,   2785,  17765, 11788, 428,
-    2709,  17681, 11925, 449,   2635,  17595, 12062, 471,   2561,  17507, 12198, 494,   2489,
-    17418, 12334, 517,   2418,  17327, 12470, 541,   2348,  17234, 12606, 566,   2280,  17140,
-    12741, 592,   2213,  17044, 12876, 619,   2147,  16946, 13010, 647,   2083,  16846, 13144,
-    675,   2020,  16745, 13277, 704,   1958,  16643, 13409, 735,   1897,  16539, 13541, 766,
-    1838,  16434, 13673, 798,   1780,  16327, 13803, 832,   1723,  16218, 13933, 866,   1667,
-    16109, 14062, 901,   1613,  15998, 14191, 937,   1560,  15885, 14318, 975,   1508,  15772,
-    14445, 1013,  1457,  15657, 14571, 1052,  1407,  15540, 14695, 1093,  1359,  15423, 14819,
-    1134,  1312,  15304, 14942, 1177,  1266,  15185, 15064, 1221,  1221,  15064, 15185, 1266,
-    1177,  14942, 15304, 1312,  1134,  14819, 15423, 1359,  1093,  14695, 15540, 1407,  1052,
-    14571, 15657, 1457,  1013,  14445, 15772, 1508,  975,   14318, 15885, 1560,  937,   14191,
-    15998, 1613,  901,   14062, 16109, 1667,  866,   13933, 16218, 1723,  832,   13803, 16327,
-    1780,  798,   13673, 16434, 1838,  766,   13541, 16539, 1897,  735,   13409, 16643, 1958,
-    704,   13277, 16745, 2020,  675,   13144, 16846, 2083,  647,   13010, 16946, 2147,  619,
-    12876, 17044, 2213,  592,   12741, 17140, 2280,  566,   12606, 17234, 2348,  541,   12470,
-    17327, 2418,  517,   12334, 17418, 2489,  494,   12198, 17507, 2561,  471,   12062, 17595,
-    2635,  449,   11925, 17681, 2709,  428,   11788, 17765, 2785,  408,   11650, 17847, 2863,
-    388,   11513, 17927, 2942,  369,   11375, 18006, 3022,  351,   11238, 18082, 3103,  334,
-    11100, 18157, 3186,  317,   10962, 18230, 3269,  300,   10824, 18300, 3355,  285,   10687,
-    18369, 3441,  270,   10549, 18436, 3529,  255,   10411, 18500, 3618,  241,   10274, 18563,
-    3709,  228,   10137, 18624, 3800,  215,   10000, 18682, 3893,  202,   9863,  18738, 3987,
-    190,   9726,  18793, 4083,  179,   9590,  18845, 4179,  168,   9454,  18895, 4277,  157,
-    9318,  18942, 4377,  147,   9183,  18988, 4477,  137,   9048,  19031, 4579,  127,   8914,
-    19073, 4681,  118,   8780,  19112, 4785,  109,   8646,  19148, 4890,  101,   8513,  19183,
-    4997,  92,    8381,  19215, 5104,  84,    8249,  19245, 5213,  77,    8118,  19273, 5323,
-    69,    7987,  19298, 5434,  62,    7857,  19321, 5546,  55,    7728,  19342, 5659,  48,
-    7600,  19361, 5773,  41,    7472,  19377, 5888,  34,    7345,  19391, 6004,  28,    7219,
-    19403, 6121,  22,    7093,  19412, 6239,  15,    6968,  19419, 6359,  9,     6845,  19424,
-    6479,  3,     6722,  19426, 6600};
-
-constexpr std::array<s16, 512> curve_lut1{
-    -68,   32639, 69,    -5,    -200,  32630, 212,   -15,   -328,  32613, 359,   -26,   -450,
-    32586, 512,   -36,   -568,  32551, 669,   -47,   -680,  32507, 832,   -58,   -788,  32454,
-    1000,  -69,   -891,  32393, 1174,  -80,   -990,  32323, 1352,  -92,   -1084, 32244, 1536,
-    -103,  -1173, 32157, 1724,  -115,  -1258, 32061, 1919,  -128,  -1338, 31956, 2118,  -140,
-    -1414, 31844, 2322,  -153,  -1486, 31723, 2532,  -167,  -1554, 31593, 2747,  -180,  -1617,
-    31456, 2967,  -194,  -1676, 31310, 3192,  -209,  -1732, 31157, 3422,  -224,  -1783, 30995,
-    3657,  -240,  -1830, 30826, 3897,  -256,  -1874, 30649, 4143,  -272,  -1914, 30464, 4393,
-    -289,  -1951, 30272, 4648,  -307,  -1984, 30072, 4908,  -325,  -2014, 29866, 5172,  -343,
-    -2040, 29652, 5442,  -362,  -2063, 29431, 5716,  -382,  -2083, 29203, 5994,  -403,  -2100,
-    28968, 6277,  -424,  -2114, 28727, 6565,  -445,  -2125, 28480, 6857,  -468,  -2133, 28226,
-    7153,  -490,  -2139, 27966, 7453,  -514,  -2142, 27700, 7758,  -538,  -2142, 27428, 8066,
-    -563,  -2141, 27151, 8378,  -588,  -2136, 26867, 8694,  -614,  -2130, 26579, 9013,  -641,
-    -2121, 26285, 9336,  -668,  -2111, 25987, 9663,  -696,  -2098, 25683, 9993,  -724,  -2084,
-    25375, 10326, -753,  -2067, 25063, 10662, -783,  -2049, 24746, 11000, -813,  -2030, 24425,
-    11342, -844,  -2009, 24100, 11686, -875,  -1986, 23771, 12033, -907,  -1962, 23438, 12382,
-    -939,  -1937, 23103, 12733, -972,  -1911, 22764, 13086, -1005, -1883, 22422, 13441, -1039,
-    -1855, 22077, 13798, -1072, -1825, 21729, 14156, -1107, -1795, 21380, 14516, -1141, -1764,
-    21027, 14877, -1176, -1732, 20673, 15239, -1211, -1700, 20317, 15602, -1246, -1667, 19959,
-    15965, -1282, -1633, 19600, 16329, -1317, -1599, 19239, 16694, -1353, -1564, 18878, 17058,
-    -1388, -1530, 18515, 17423, -1424, -1495, 18151, 17787, -1459, -1459, 17787, 18151, -1495,
-    -1424, 17423, 18515, -1530, -1388, 17058, 18878, -1564, -1353, 16694, 19239, -1599, -1317,
-    16329, 19600, -1633, -1282, 15965, 19959, -1667, -1246, 15602, 20317, -1700, -1211, 15239,
-    20673, -1732, -1176, 14877, 21027, -1764, -1141, 14516, 21380, -1795, -1107, 14156, 21729,
-    -1825, -1072, 13798, 22077, -1855, -1039, 13441, 22422, -1883, -1005, 13086, 22764, -1911,
-    -972,  12733, 23103, -1937, -939,  12382, 23438, -1962, -907,  12033, 23771, -1986, -875,
-    11686, 24100, -2009, -844,  11342, 24425, -2030, -813,  11000, 24746, -2049, -783,  10662,
-    25063, -2067, -753,  10326, 25375, -2084, -724,  9993,  25683, -2098, -696,  9663,  25987,
-    -2111, -668,  9336,  26285, -2121, -641,  9013,  26579, -2130, -614,  8694,  26867, -2136,
-    -588,  8378,  27151, -2141, -563,  8066,  27428, -2142, -538,  7758,  27700, -2142, -514,
-    7453,  27966, -2139, -490,  7153,  28226, -2133, -468,  6857,  28480, -2125, -445,  6565,
-    28727, -2114, -424,  6277,  28968, -2100, -403,  5994,  29203, -2083, -382,  5716,  29431,
-    -2063, -362,  5442,  29652, -2040, -343,  5172,  29866, -2014, -325,  4908,  30072, -1984,
-    -307,  4648,  30272, -1951, -289,  4393,  30464, -1914, -272,  4143,  30649, -1874, -256,
-    3897,  30826, -1830, -240,  3657,  30995, -1783, -224,  3422,  31157, -1732, -209,  3192,
-    31310, -1676, -194,  2967,  31456, -1617, -180,  2747,  31593, -1554, -167,  2532,  31723,
-    -1486, -153,  2322,  31844, -1414, -140,  2118,  31956, -1338, -128,  1919,  32061, -1258,
-    -115,  1724,  32157, -1173, -103,  1536,  32244, -1084, -92,   1352,  32323, -990,  -80,
-    1174,  32393, -891,  -69,   1000,  32454, -788,  -58,   832,   32507, -680,  -47,   669,
-    32551, -568,  -36,   512,   32586, -450,  -26,   359,   32613, -328,  -15,   212,   32630,
-    -200,  -5,    69,    32639, -68};
-
-constexpr std::array<s16, 512> curve_lut2{
-    3195,  26287, 3329,  -32,   3064,  26281, 3467,  -34,   2936,  26270, 3608,  -38,   2811,
-    26253, 3751,  -42,   2688,  26230, 3897,  -46,   2568,  26202, 4046,  -50,   2451,  26169,
-    4199,  -54,   2338,  26130, 4354,  -58,   2227,  26085, 4512,  -63,   2120,  26035, 4673,
-    -67,   2015,  25980, 4837,  -72,   1912,  25919, 5004,  -76,   1813,  25852, 5174,  -81,
-    1716,  25780, 5347,  -87,   1622,  25704, 5522,  -92,   1531,  25621, 5701,  -98,   1442,
-    25533, 5882,  -103,  1357,  25440, 6066,  -109,  1274,  25342, 6253,  -115,  1193,  25239,
-    6442,  -121,  1115,  25131, 6635,  -127,  1040,  25018, 6830,  -133,  967,   24899, 7027,
-    -140,  897,   24776, 7227,  -146,  829,   24648, 7430,  -153,  764,   24516, 7635,  -159,
-    701,   24379, 7842,  -166,  641,   24237, 8052,  -174,  583,   24091, 8264,  -181,  526,
-    23940, 8478,  -187,  472,   23785, 8695,  -194,  420,   23626, 8914,  -202,  371,   23462,
-    9135,  -209,  324,   23295, 9358,  -215,  279,   23123, 9583,  -222,  236,   22948, 9809,
-    -230,  194,   22769, 10038, -237,  154,   22586, 10269, -243,  117,   22399, 10501, -250,
-    81,    22208, 10735, -258,  47,    22015, 10970, -265,  15,    21818, 11206, -271,  -16,
-    21618, 11444, -277,  -44,   21415, 11684, -283,  -71,   21208, 11924, -290,  -97,   20999,
-    12166, -296,  -121,  20786, 12409, -302,  -143,  20571, 12653, -306,  -163,  20354, 12898,
-    -311,  -183,  20134, 13143, -316,  -201,  19911, 13389, -321,  -218,  19686, 13635, -325,
-    -234,  19459, 13882, -328,  -248,  19230, 14130, -332,  -261,  18998, 14377, -335,  -273,
-    18765, 14625, -337,  -284,  18531, 14873, -339,  -294,  18295, 15121, -341,  -302,  18057,
-    15369, -341,  -310,  17817, 15617, -341,  -317,  17577, 15864, -340,  -323,  17335, 16111,
-    -340,  -328,  17092, 16357, -338,  -332,  16848, 16603, -336,  -336,  16603, 16848, -332,
-    -338,  16357, 17092, -328,  -340,  16111, 17335, -323,  -340,  15864, 17577, -317,  -341,
-    15617, 17817, -310,  -341,  15369, 18057, -302,  -341,  15121, 18295, -294,  -339,  14873,
-    18531, -284,  -337,  14625, 18765, -273,  -335,  14377, 18998, -261,  -332,  14130, 19230,
-    -248,  -328,  13882, 19459, -234,  -325,  13635, 19686, -218,  -321,  13389, 19911, -201,
-    -316,  13143, 20134, -183,  -311,  12898, 20354, -163,  -306,  12653, 20571, -143,  -302,
-    12409, 20786, -121,  -296,  12166, 20999, -97,   -290,  11924, 21208, -71,   -283,  11684,
-    21415, -44,   -277,  11444, 21618, -16,   -271,  11206, 21818, 15,    -265,  10970, 22015,
-    47,    -258,  10735, 22208, 81,    -250,  10501, 22399, 117,   -243,  10269, 22586, 154,
-    -237,  10038, 22769, 194,   -230,  9809,  22948, 236,   -222,  9583,  23123, 279,   -215,
-    9358,  23295, 324,   -209,  9135,  23462, 371,   -202,  8914,  23626, 420,   -194,  8695,
-    23785, 472,   -187,  8478,  23940, 526,   -181,  8264,  24091, 583,   -174,  8052,  24237,
-    641,   -166,  7842,  24379, 701,   -159,  7635,  24516, 764,   -153,  7430,  24648, 829,
-    -146,  7227,  24776, 897,   -140,  7027,  24899, 967,   -133,  6830,  25018, 1040,  -127,
-    6635,  25131, 1115,  -121,  6442,  25239, 1193,  -115,  6253,  25342, 1274,  -109,  6066,
-    25440, 1357,  -103,  5882,  25533, 1442,  -98,   5701,  25621, 1531,  -92,   5522,  25704,
-    1622,  -87,   5347,  25780, 1716,  -81,   5174,  25852, 1813,  -76,   5004,  25919, 1912,
-    -72,   4837,  25980, 2015,  -67,   4673,  26035, 2120,  -63,   4512,  26085, 2227,  -58,
-    4354,  26130, 2338,  -54,   4199,  26169, 2451,  -50,   4046,  26202, 2568,  -46,   3897,
-    26230, 2688,  -42,   3751,  26253, 2811,  -38,   3608,  26270, 2936,  -34,   3467,  26281,
-    3064,  -32,   3329,  26287, 3195};
-
-std::vector<s16> Interpolate(InterpolationState& state, std::vector<s16> input, double ratio) {
-    if (input.size() < 2)
-        return {};
-
-    if (ratio <= 0) {
-        LOG_ERROR(Audio, "Nonsensical interpolation ratio {}", ratio);
-        return input;
-    }
-
-    const s32 step{static_cast<s32>(ratio * 0x8000)};
-    const std::array<s16, 512>& lut = [step] {
-        if (step > 0xaaaa) {
-            return curve_lut0;
-        }
-        if (step <= 0x8000) {
-            return curve_lut1;
-        }
-        return curve_lut2;
-    }();
-
-    const std::size_t num_frames{input.size() / 2};
-
-    std::vector<s16> output;
-    output.reserve(static_cast<std::size_t>(static_cast<double>(input.size()) / ratio +
-                                            InterpolationState::taps));
-
-    for (std::size_t frame{}; frame < num_frames; ++frame) {
-        const std::size_t lut_index{(state.fraction >> 8) * InterpolationState::taps};
-
-        std::rotate(state.history.begin(), state.history.end() - 1, state.history.end());
-        state.history[0][0] = input[frame * 2 + 0];
-        state.history[0][1] = input[frame * 2 + 1];
-
-        while (state.position <= 1.0) {
-            const s32 left{state.history[0][0] * lut[lut_index + 0] +
-                           state.history[1][0] * lut[lut_index + 1] +
-                           state.history[2][0] * lut[lut_index + 2] +
-                           state.history[3][0] * lut[lut_index + 3]};
-            const s32 right{state.history[0][1] * lut[lut_index + 0] +
-                            state.history[1][1] * lut[lut_index + 1] +
-                            state.history[2][1] * lut[lut_index + 2] +
-                            state.history[3][1] * lut[lut_index + 3]};
-            const s32 new_offset{state.fraction + step};
-
-            state.fraction = new_offset & 0x7fff;
-
-            output.emplace_back(static_cast<s16>(std::clamp(left >> 15, SHRT_MIN, SHRT_MAX)));
-            output.emplace_back(static_cast<s16>(std::clamp(right >> 15, SHRT_MIN, SHRT_MAX)));
-
-            state.position += ratio;
-        }
-        state.position -= 1.0;
-    }
-
-    return output;
-}
-
-void Resample(s32* output, const s32* input, s32 pitch, s32& fraction, std::size_t sample_count) {
-    const std::array<s16, 512>& lut = [pitch] {
-        if (pitch > 0xaaaa) {
-            return curve_lut0;
-        }
-        if (pitch <= 0x8000) {
-            return curve_lut1;
-        }
-        return curve_lut2;
-    }();
-
-    std::size_t index{};
-
-    for (std::size_t i = 0; i < sample_count; i++) {
-        const std::size_t lut_index{(static_cast<std::size_t>(fraction) >> 8) * 4};
-        const auto l0 = lut[lut_index + 0];
-        const auto l1 = lut[lut_index + 1];
-        const auto l2 = lut[lut_index + 2];
-        const auto l3 = lut[lut_index + 3];
-
-        const auto s0 = static_cast<s32>(input[index + 0]);
-        const auto s1 = static_cast<s32>(input[index + 1]);
-        const auto s2 = static_cast<s32>(input[index + 2]);
-        const auto s3 = static_cast<s32>(input[index + 3]);
-
-        output[i] = (l0 * s0 + l1 * s1 + l2 * s2 + l3 * s3) >> 15;
-        fraction += pitch;
-        index += (fraction >> 15);
-        fraction &= 0x7fff;
-    }
-}
-
-} // namespace AudioCore

src/audio_core/algorithm/interpolate.h

@@ -1,43 +0,0 @@
-// SPDX-FileCopyrightText: Copyright 2018 yuzu Emulator Project
-// SPDX-License-Identifier: GPL-2.0-or-later
-
-#pragma once
-
-#include <array>
-#include <vector>
-
-#include "common/common_types.h"
-
-namespace AudioCore {
-
-struct InterpolationState {
-    static constexpr std::size_t taps{4};
-    static constexpr std::size_t history_size{taps * 2 - 1};
-    std::array<std::array<s16, 2>, history_size> history{};
-    double position{};
-    s32 fraction{};
-};
-
-/// Interpolates input signal to produce output signal.
-/// @param input The signal to interpolate.
-/// @param ratio Interpolation ratio.
-///              ratio > 1.0 results in fewer output samples.
-///              ratio < 1.0 results in more output samples.
-/// @returns Output signal.
-std::vector<s16> Interpolate(InterpolationState& state, std::vector<s16> input, double ratio);
-
-/// Interpolates input signal to produce output signal.
-/// @param input The signal to interpolate.
-/// @param input_rate The sample rate of input.
-/// @param output_rate The desired sample rate of the output.
-/// @returns Output signal.
-inline std::vector<s16> Interpolate(InterpolationState& state, std::vector<s16> input,
-                                    u32 input_rate, u32 output_rate) {
-    const double ratio = static_cast<double>(input_rate) / static_cast<double>(output_rate);
-    return Interpolate(state, std::move(input), ratio);
-}
-
-/// Nintendo Switchs DSP resampling algorithm. Based on a single channel
-void Resample(s32* output, const s32* input, s32 pitch, s32& fraction, std::size_t sample_count);
-
-} // namespace AudioCore

src/audio_core/audio_core.cpp

@@ -0,0 +1,68 @@
+// SPDX-FileCopyrightText: Copyright 2022 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include "audio_core/audio_core.h"
+#include "audio_core/sink/sink_details.h"
+#include "common/settings.h"
+#include "core/core.h"
+
+namespace AudioCore {
+
+AudioCore::AudioCore(Core::System& system) : audio_manager{std::make_unique<AudioManager>(system)} {
+    CreateSinks();
+    // Must be created after the sinks
+    adsp = std::make_unique<AudioRenderer::ADSP::ADSP>(system, *output_sink);
+}
+
+AudioCore ::~AudioCore() {
+    Shutdown();
+}
+
+void AudioCore::CreateSinks() {
+    const auto& sink_id{Settings::values.sink_id};
+    const auto& audio_output_device_id{Settings::values.audio_output_device_id};
+    const auto& audio_input_device_id{Settings::values.audio_input_device_id};
+
+    output_sink = Sink::CreateSinkFromID(sink_id.GetValue(), audio_output_device_id.GetValue());
+    input_sink = Sink::CreateSinkFromID(sink_id.GetValue(), audio_input_device_id.GetValue());
+}
+
+void AudioCore::Shutdown() {
+    audio_manager->Shutdown();
+}
+
+AudioManager& AudioCore::GetAudioManager() {
+    return *audio_manager;
+}
+
+Sink::Sink& AudioCore::GetOutputSink() {
+    return *output_sink;
+}
+
+Sink::Sink& AudioCore::GetInputSink() {
+    return *input_sink;
+}
+
+AudioRenderer::ADSP::ADSP& AudioCore::GetADSP() {
+    return *adsp;
+}
+
+void AudioCore::PauseSinks(const bool pausing) const {
+    if (pausing) {
+        output_sink->PauseStreams();
+        input_sink->PauseStreams();
+    } else {
+        output_sink->UnpauseStreams();
+        input_sink->UnpauseStreams();
+    }
+}
+
+u32 AudioCore::GetStreamQueue() const {
+    return estimated_queue.load();
+}
+
+void AudioCore::SetStreamQueue(u32 size) {
+    estimated_queue.store(size);
+}
+
+} // namespace AudioCore

src/audio_core/audio_core.h

@@ -0,0 +1,100 @@
+// SPDX-FileCopyrightText: Copyright 2022 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#include <memory>
+
+#include "audio_core/audio_manager.h"
+#include "audio_core/renderer/adsp/adsp.h"
+#include "audio_core/sink/sink.h"
+
+namespace Core {
+class System;
+}
+
+namespace AudioCore {
+
+class AudioManager;
+/**
+ * Main audio class, sotred inside the core, and holding the audio manager, all sinks, and the ADSP.
+ */
+class AudioCore {
+public:
+    explicit AudioCore(Core::System& system);
+    ~AudioCore();
+
+    /**
+     * Shutdown the audio core.
+     */
+    void Shutdown();
+
+    /**
+     * Get a reference to the audio manager.
+     *
+     * @return Ref to the audio manager.
+     */
+    AudioManager& GetAudioManager();
+
+    /**
+     * Get the audio output sink currently in use.
+     *
+     * @return Ref to the sink.
+     */
+    Sink::Sink& GetOutputSink();
+
+    /**
+     * Get the audio input sink currently in use.
+     *
+     * @return Ref to the sink.
+     */
+    Sink::Sink& GetInputSink();
+
+    /**
+     * Get the ADSP.
+     *
+     * @return Ref to the ADSP.
+     */
+    AudioRenderer::ADSP::ADSP& GetADSP();
+
+    /**
+     * Pause the sink. Called from the core.
+     *
+     * @param pausing - Is this pause due to an actual pause, or shutdown?
+     *                  Unfortunately, shutdown also pauses streams, which can cause issues.
+     */
+    void PauseSinks(bool pausing) const;
+
+    /**
+     * Get the size of the current stream queue.
+     *
+     * @return Current stream queue size.
+     */
+    u32 GetStreamQueue() const;
+
+    /**
+     * Get the size of the current stream queue.
+     *
+     * @param size - New stream size.
+     */
+    void SetStreamQueue(u32 size);
+
+private:
+    /**
+     * Create the sinks on startup.
+     */
+    void CreateSinks();
+
+    /// Main audio manager for audio in/out
+    std::unique_ptr<AudioManager> audio_manager;
+    /// Sink used for audio renderer and audio out
+    std::unique_ptr<Sink::Sink> output_sink;
+    /// Sink used for audio input
+    std::unique_ptr<Sink::Sink> input_sink;
+    /// The ADSP in the sysmodule
+    std::unique_ptr<AudioRenderer::ADSP::ADSP> adsp;
+    /// Current size of the stream queue
+    std::atomic<u32> estimated_queue{0};
+};
+
+} // namespace AudioCore

src/audio_core/audio_event.cpp

@@ -0,0 +1,61 @@
+// SPDX-FileCopyrightText: Copyright 2022 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include "audio_core/audio_event.h"
+#include "common/assert.h"
+
+namespace AudioCore {
+
+size_t Event::GetManagerIndex(const Type type) const {
+    switch (type) {
+    case Type::AudioInManager:
+        return 0;
+    case Type::AudioOutManager:
+        return 1;
+    case Type::FinalOutputRecorderManager:
+        return 2;
+    case Type::Max:
+        return 3;
+    default:
+        UNREACHABLE();
+    }
+    return 3;
+}
+
+void Event::SetAudioEvent(const Type type, const bool signalled) {
+    events_signalled[GetManagerIndex(type)] = signalled;
+    if (signalled) {
+        manager_event.notify_one();
+    }
+}
+
+bool Event::CheckAudioEventSet(const Type type) const {
+    return events_signalled[GetManagerIndex(type)];
+}
+
+std::mutex& Event::GetAudioEventLock() {
+    return event_lock;
+}
+
+std::condition_variable_any& Event::GetAudioEvent() {
+    return manager_event;
+}
+
+bool Event::Wait(std::unique_lock<std::mutex>& l, const std::chrono::seconds timeout) {
+    bool timed_out{false};
+    if (!manager_event.wait_for(l, timeout, [&]() {
+            return std::ranges::any_of(events_signalled, [](bool x) { return x; });
+        })) {
+        timed_out = true;
+    }
+    return timed_out;
+}
+
+void Event::ClearEvents() {
+    events_signalled[0] = false;
+    events_signalled[1] = false;
+    events_signalled[2] = false;
+    events_signalled[3] = false;
+}
+
+} // namespace AudioCore

src/audio_core/audio_event.h

@@ -0,0 +1,92 @@
+// SPDX-FileCopyrightText: Copyright 2022 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#include <array>
+#include <atomic>
+#include <chrono>
+#include <condition_variable>
+#include <mutex>
+
+namespace AudioCore {
+/**
+ * Responsible for the input/output events, set by the stream backend when buffers are consumed, and
+ * waited on by the audio manager. These callbacks signal the game's events to keep the audio buffer
+ * recycling going.
+ * In a real Switch this is not a seprate class, and exists entirely within the audio manager.
+ * On the Switch it's implemented more simply through a MultiWaitEventHolder, where it can
+ * wait on multiple events at once, and the events are not needed by the backend.
+ */
+class Event {
+public:
+    enum class Type {
+        AudioInManager,
+        AudioOutManager,
+        FinalOutputRecorderManager,
+        Max,
+    };
+
+    /**
+     * Convert a manager type to an index.
+     *
+     * @param type - The manager type to convert
+     * @return The index of the type.
+     */
+    size_t GetManagerIndex(Type type) const;
+
+    /**
+     * Set an audio event to true or false.
+     *
+     * @param type      - The manager type to signal.
+     * @param signalled - Its signal state.
+     */
+    void SetAudioEvent(Type type, bool signalled);
+
+    /**
+     * Check if the given manager type is signalled.
+     *
+     * @param type - The manager type to check.
+     * @return True if the event is signalled, otherwise false.
+     */
+    bool CheckAudioEventSet(Type type) const;
+
+    /**
+     * Get the lock for audio events.
+     *
+     * @return Reference to the lock.
+     */
+    std::mutex& GetAudioEventLock();
+
+    /**
+     * Get the manager event, this signals the audio manager to release buffers and signal the game
+     * for more.
+     *
+     * @return Reference to the condition variable.
+     */
+    std::condition_variable_any& GetAudioEvent();
+
+    /**
+     * Wait on the manager_event.
+     *
+     * @param l       - Lock held by the wait.
+     * @param timeout - Timeout for the wait. This is 2 seconds by default.
+     * @return True if the wait timed out, otherwise false if signalled.
+     */
+    bool Wait(std::unique_lock<std::mutex>& l, std::chrono::seconds timeout);
+
+    /**
+     * Reset all manager events.
+     */
+    void ClearEvents();
+
+private:
+    /// Lock, used bythe audio manager
+    std::mutex event_lock;
+    /// Array of events, one per system type (see Type), last event is used to terminate
+    std::array<std::atomic<bool>, 4> events_signalled;
+    /// Event to signal the audio manager
+    std::condition_variable_any manager_event;
+};
+
+} // namespace AudioCore

src/audio_core/audio_in_manager.cpp

@@ -0,0 +1,91 @@
+// SPDX-FileCopyrightText: Copyright 2022 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include "audio_core/audio_core.h"
+#include "audio_core/audio_in_manager.h"
+#include "audio_core/audio_manager.h"
+#include "audio_core/in/audio_in.h"
+#include "audio_core/sink/sink_details.h"
+#include "common/settings.h"
+#include "core/core.h"
+#include "core/hle/service/audio/errors.h"
+
+namespace AudioCore::AudioIn {
+
+Manager::Manager(Core::System& system_) : system{system_} {
+    std::iota(session_ids.begin(), session_ids.end(), 0);
+    num_free_sessions = MaxInSessions;
+}
+
+Result Manager::AcquireSessionId(size_t& session_id) {
+    if (num_free_sessions == 0) {
+        LOG_ERROR(Service_Audio, "All 4 AudioIn sessions are in use, cannot create any more");
+        return Service::Audio::ERR_MAXIMUM_SESSIONS_REACHED;
+    }
+    session_id = session_ids[next_session_id];
+    next_session_id = (next_session_id + 1) % MaxInSessions;
+    num_free_sessions--;
+    return ResultSuccess;
+}
+
+void Manager::ReleaseSessionId(const size_t session_id) {
+    std::scoped_lock l{mutex};
+    LOG_DEBUG(Service_Audio, "Freeing AudioIn session {}", session_id);
+    session_ids[free_session_id] = session_id;
+    num_free_sessions++;
+    free_session_id = (free_session_id + 1) % MaxInSessions;
+    sessions[session_id].reset();
+    applet_resource_user_ids[session_id] = 0;
+}
+
+Result Manager::LinkToManager() {
+    std::scoped_lock l{mutex};
+    if (!linked_to_manager) {
+        AudioManager& manager{system.AudioCore().GetAudioManager()};
+        manager.SetInManager(std::bind(&Manager::BufferReleaseAndRegister, this));
+        linked_to_manager = true;
+    }
+
+    return ResultSuccess;
+}
+
+void Manager::Start() {
+    if (sessions_started) {
+        return;
+    }
+
+    std::scoped_lock l{mutex};
+    for (auto& session : sessions) {
+        if (session) {
+            session->StartSession();
+        }
+    }
+
+    sessions_started = true;
+}
+
+void Manager::BufferReleaseAndRegister() {
+    std::scoped_lock l{mutex};
+    for (auto& session : sessions) {
+        if (session != nullptr) {
+            session->ReleaseAndRegisterBuffers();
+        }
+    }
+}
+
+u32 Manager::GetDeviceNames(std::vector<AudioRenderer::AudioDevice::AudioDeviceName>& names,
+                            [[maybe_unused]] const u32 max_count,
+                            [[maybe_unused]] const bool filter) {
+    std::scoped_lock l{mutex};
+
+    LinkToManager();
+
+    auto input_devices{Sink::GetDeviceListForSink(Settings::values.sink_id.GetValue(), true)};
+    if (input_devices.size() > 1) {
+        names.push_back(AudioRenderer::AudioDevice::AudioDeviceName("Uac"));
+        return 1;
+    }
+    return 0;
+}
+
+} // namespace AudioCore::AudioIn

src/audio_core/audio_in_manager.h

@@ -0,0 +1,92 @@
+// SPDX-FileCopyrightText: Copyright 2022 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#include <array>
+#include <mutex>
+#include <vector>
+
+#include "audio_core/renderer/audio_device.h"
+
+namespace Core {
+class System;
+}
+
+namespace AudioCore::AudioIn {
+class In;
+
+constexpr size_t MaxInSessions = 4;
+/**
+ * Manages all audio in sessions.
+ */
+class Manager {
+public:
+    explicit Manager(Core::System& system);
+
+    /**
+     * Acquire a free session id for opening a new audio in.
+     *
+     * @param session_id - Output session_id.
+     * @return Result code.
+     */
+    Result AcquireSessionId(size_t& session_id);
+
+    /**
+     * Release a session id on close.
+     *
+     * @param session_id - Session id to free.
+     */
+    void ReleaseSessionId(size_t session_id);
+
+    /**
+     * Link the audio in manager to the main audio manager.
+     *
+     * @return Result code.
+     */
+    Result LinkToManager();
+
+    /**
+     * Start the audio in manager.
+     */
+    void Start();
+
+    /**
+     * Callback function, called by the audio manager when the audio in event is signalled.
+     */
+    void BufferReleaseAndRegister();
+
+    /**
+     * Get a list of audio in device names.
+     *
+     * @oaram names     - Output container to write names to.
+     * @param max_count - Maximum numebr of deivce names to write. Unused
+     * @param filter    - Should the list be filtered? Unused.
+     * @return Number of names written.
+     */
+    u32 GetDeviceNames(std::vector<AudioRenderer::AudioDevice::AudioDeviceName>& names,
+                       u32 max_count, bool filter);
+
+    /// Core system
+    Core::System& system;
+    /// Array of session ids
+    std::array<size_t, MaxInSessions> session_ids{};
+    /// Array of resource user ids
+    std::array<size_t, MaxInSessions> applet_resource_user_ids{};
+    /// Pointer to each open session
+    std::array<std::shared_ptr<In>, MaxInSessions> sessions{};
+    /// The number of free sessions
+    size_t num_free_sessions{};
+    /// The next session id to be taken
+    size_t next_session_id{};
+    /// The next session id to be freed
+    size_t free_session_id{};
+    /// Whether this is linked to the audio manager
+    bool linked_to_manager{};
+    /// Whether the sessions have been started
+    bool sessions_started{};
+    /// Protect state due to audio manager callback
+    std::recursive_mutex mutex{};
+};
+
+} // namespace AudioCore::AudioIn

src/audio_core/audio_manager.cpp

@@ -0,0 +1,80 @@
+// SPDX-FileCopyrightText: Copyright 2022 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include "audio_core/audio_in_manager.h"
+#include "audio_core/audio_manager.h"
+#include "audio_core/audio_out_manager.h"
+#include "core/core.h"
+
+namespace AudioCore {
+
+AudioManager::AudioManager(Core::System& system_) : system{system_} {
+    thread = std::jthread([this]() { ThreadFunc(); });
+}
+
+void AudioManager::Shutdown() {
+    running = false;
+    events.SetAudioEvent(Event::Type::Max, true);
+    thread.join();
+}
+
+Result AudioManager::SetOutManager(BufferEventFunc buffer_func) {
+    if (!running) {
+        return Service::Audio::ERR_OPERATION_FAILED;
+    }
+
+    std::scoped_lock l{lock};
+
+    const auto index{events.GetManagerIndex(Event::Type::AudioOutManager)};
+    if (buffer_events[index] == nullptr) {
+        buffer_events[index] = buffer_func;
+        needs_update = true;
+        events.SetAudioEvent(Event::Type::AudioOutManager, true);
+    }
+    return ResultSuccess;
+}
+
+Result AudioManager::SetInManager(BufferEventFunc buffer_func) {
+    if (!running) {
+        return Service::Audio::ERR_OPERATION_FAILED;
+    }
+
+    std::scoped_lock l{lock};
+
+    const auto index{events.GetManagerIndex(Event::Type::AudioInManager)};
+    if (buffer_events[index] == nullptr) {
+        buffer_events[index] = buffer_func;
+        needs_update = true;
+        events.SetAudioEvent(Event::Type::AudioInManager, true);
+    }
+    return ResultSuccess;
+}
+
+void AudioManager::SetEvent(const Event::Type type, const bool signalled) {
+    events.SetAudioEvent(type, signalled);
+}
+
+void AudioManager::ThreadFunc() {
+    std::unique_lock l{events.GetAudioEventLock()};
+    events.ClearEvents();
+    running = true;
+
+    while (running) {
+        auto timed_out{events.Wait(l, std::chrono::seconds(2))};
+
+        if (events.CheckAudioEventSet(Event::Type::Max)) {
+            break;
+        }
+
+        for (size_t i = 0; i < buffer_events.size(); i++) {
+            if (events.CheckAudioEventSet(Event::Type(i)) || timed_out) {
+                if (buffer_events[i]) {
+                    buffer_events[i]();
+                }
+            }
+            events.SetAudioEvent(Event::Type(i), false);
+        }
+    }
+}
+
+} // namespace AudioCore

src/audio_core/audio_manager.h

@@ -0,0 +1,101 @@
+// SPDX-FileCopyrightText: Copyright 2022 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#include <array>
+#include <atomic>
+#include <functional>
+#include <mutex>
+#include <thread>
+
+#include "audio_core/audio_event.h"
+#include "core/hle/service/audio/errors.h"
+
+namespace Core {
+class System;
+}
+
+namespace AudioCore {
+
+namespace AudioOut {
+class Manager;
+}
+
+namespace AudioIn {
+class Manager;
+}
+
+/**
+ * The AudioManager's main purpose is to wait for buffer events for the audio in and out managers,
+ * and call an associated callback to release buffers.
+ *
+ * Execution pattern is:
+ *     Buffers appended ->
+ *     Buffers queued and played by the backend stream ->
+ *     When consumed, set the corresponding manager event and signal the audio manager ->
+ *     Consumed buffers are released, game is signalled ->
+ *     Game appends more buffers.
+ *
+ * This is only used by audio in and audio out.
+ */
+class AudioManager {
+    using BufferEventFunc = std::function<void()>;
+
+public:
+    explicit AudioManager(Core::System& system);
+
+    /**
+     * Shutdown the audio manager.
+     */
+    void Shutdown();
+
+    /**
+     * Register the out manager, keeping a function to be called when the out event is signalled.
+     *
+     * @param buffer_func - Function to be called on signal.
+     * @return Result code.
+     */
+    Result SetOutManager(BufferEventFunc buffer_func);
+
+    /**
+     * Register the in manager, keeping a function to be called when the in event is signalled.
+     *
+     * @param buffer_func - Function to be called on signal.
+     * @return Result code.
+     */
+    Result SetInManager(BufferEventFunc buffer_func);
+
+    /**
+     * Set an event to signalled, and signal the thread.
+     *
+     * @param type      - Manager type to set.
+     * @param signalled - Set the event to true or false?
+     */
+    void SetEvent(Event::Type type, bool signalled);
+
+private:
+    /**
+     * Main thread, waiting on a manager signal and calling the registered fucntion.
+     */
+    void ThreadFunc();
+
+    /// Core system
+    Core::System& system;
+    /// Have sessions started palying?
+    bool sessions_started{};
+    /// Is the main thread running?
+    std::atomic<bool> running{};
+    /// Unused
+    bool needs_update{};
+    /// Events to be set and signalled
+    Event events{};
+    /// Callbacks for each manager
+    std::array<BufferEventFunc, 3> buffer_events{};
+    /// General lock
+    std::mutex lock{};
+    /// Main thread for waiting and callbacks
+    std::jthread thread;
+};
+
+} // namespace AudioCore

src/audio_core/audio_out.cpp

@@ -1,62 +0,0 @@
-// SPDX-FileCopyrightText: Copyright 2018 yuzu Emulator Project
-// SPDX-License-Identifier: GPL-2.0-or-later
-
-#include "audio_core/audio_out.h"
-#include "audio_core/sink.h"
-#include "audio_core/sink_details.h"
-#include "common/assert.h"
-#include "common/logging/log.h"
-#include "common/settings.h"
-
-namespace AudioCore {
-
-/// Returns the stream format from the specified number of channels
-static Stream::Format ChannelsToStreamFormat(u32 num_channels) {
-    switch (num_channels) {
-    case 1:
-        return Stream::Format::Mono16;
-    case 2:
-        return Stream::Format::Stereo16;
-    case 6:
-        return Stream::Format::Multi51Channel16;
-    }
-
-    UNIMPLEMENTED_MSG("Unimplemented num_channels={}", num_channels);
-    return {};
-}
-
-StreamPtr AudioOut::OpenStream(Core::Timing::CoreTiming& core_timing, u32 sample_rate,
-                               u32 num_channels, std::string&& name,
-                               Stream::ReleaseCallback&& release_callback) {
-    if (!sink) {
-        sink = CreateSinkFromID(Settings::values.sink_id.GetValue(),
-                                Settings::values.audio_device_id.GetValue());
-    }
-
-    return std::make_shared<Stream>(
-        core_timing, sample_rate, ChannelsToStreamFormat(num_channels), std::move(release_callback),
-        sink->AcquireSinkStream(sample_rate, num_channels, name), std::move(name));
-}
-
-std::vector<Buffer::Tag> AudioOut::GetTagsAndReleaseBuffers(StreamPtr stream,
-                                                            std::size_t max_count) {
-    return stream->GetTagsAndReleaseBuffers(max_count);
-}
-
-std::vector<Buffer::Tag> AudioOut::GetTagsAndReleaseBuffers(StreamPtr stream) {
-    return stream->GetTagsAndReleaseBuffers();
-}
-
-void AudioOut::StartStream(StreamPtr stream) {
-    stream->Play();
-}
-
-void AudioOut::StopStream(StreamPtr stream) {
-    stream->Stop();
-}
-
-bool AudioOut::QueueBuffer(StreamPtr stream, Buffer::Tag tag, std::vector<s16>&& data) {
-    return stream->QueueBuffer(std::make_shared<Buffer>(tag, std::move(data)));
-}
-
-} // namespace AudioCore

src/audio_core/audio_out.h

@@ -1,49 +0,0 @@
-// SPDX-FileCopyrightText: Copyright 2018 yuzu Emulator Project
-// SPDX-License-Identifier: GPL-2.0-or-later
-
-#pragma once
-
-#include <memory>
-#include <string>
-#include <vector>
-
-#include "audio_core/buffer.h"
-#include "audio_core/sink.h"
-#include "audio_core/stream.h"
-#include "common/common_types.h"
-
-namespace Core::Timing {
-class CoreTiming;
-}
-
-namespace AudioCore {
-
-/**
- * Represents an audio playback interface, used to open and play audio streams
- */
-class AudioOut {
-public:
-    /// Opens a new audio stream
-    StreamPtr OpenStream(Core::Timing::CoreTiming& core_timing, u32 sample_rate, u32 num_channels,
-                         std::string&& name, Stream::ReleaseCallback&& release_callback);
-
-    /// Returns a vector of recently released buffers specified by tag for the specified stream
-    std::vector<Buffer::Tag> GetTagsAndReleaseBuffers(StreamPtr stream, std::size_t max_count);
-
-    /// Returns a vector of all recently released buffers specified by tag for the specified stream
-    std::vector<Buffer::Tag> GetTagsAndReleaseBuffers(StreamPtr stream);
-
-    /// Starts an audio stream for playback
-    void StartStream(StreamPtr stream);
-
-    /// Stops an audio stream that is currently playing
-    void StopStream(StreamPtr stream);
-
-    /// Queues a buffer into the specified audio stream, returns true on success
-    bool QueueBuffer(StreamPtr stream, Buffer::Tag tag, std::vector<s16>&& data);
-
-private:
-    SinkPtr sink;
-};
-
-} // namespace AudioCore

src/audio_core/audio_out_manager.cpp

@@ -0,0 +1,81 @@
+// SPDX-FileCopyrightText: Copyright 2022 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include "audio_core/audio_core.h"
+#include "audio_core/audio_manager.h"
+#include "audio_core/audio_out_manager.h"
+#include "audio_core/out/audio_out.h"
+#include "core/core.h"
+#include "core/hle/kernel/k_event.h"
+#include "core/hle/service/audio/errors.h"
+
+namespace AudioCore::AudioOut {
+
+Manager::Manager(Core::System& system_) : system{system_} {
+    std::iota(session_ids.begin(), session_ids.end(), 0);
+    num_free_sessions = MaxOutSessions;
+}
+
+Result Manager::AcquireSessionId(size_t& session_id) {
+    if (num_free_sessions == 0) {
+        LOG_ERROR(Service_Audio, "All 12 Audio Out sessions are in use, cannot create any more");
+        return Service::Audio::ERR_MAXIMUM_SESSIONS_REACHED;
+    }
+    session_id = session_ids[next_session_id];
+    next_session_id = (next_session_id + 1) % MaxOutSessions;
+    num_free_sessions--;
+    return ResultSuccess;
+}
+
+void Manager::ReleaseSessionId(const size_t session_id) {
+    std::scoped_lock l{mutex};
+    LOG_DEBUG(Service_Audio, "Freeing AudioOut session {}", session_id);
+    session_ids[free_session_id] = session_id;
+    num_free_sessions++;
+    free_session_id = (free_session_id + 1) % MaxOutSessions;
+    sessions[session_id].reset();
+    applet_resource_user_ids[session_id] = 0;
+}
+
+Result Manager::LinkToManager() {
+    std::scoped_lock l{mutex};
+    if (!linked_to_manager) {
+        AudioManager& manager{system.AudioCore().GetAudioManager()};
+        manager.SetOutManager(std::bind(&Manager::BufferReleaseAndRegister, this));
+        linked_to_manager = true;
+    }
+
+    return ResultSuccess;
+}
+
+void Manager::Start() {
+    if (sessions_started) {
+        return;
+    }
+
+    std::scoped_lock l{mutex};
+    for (auto& session : sessions) {
+        if (session) {
+            session->StartSession();
+        }
+    }
+
+    sessions_started = true;
+}
+
+void Manager::BufferReleaseAndRegister() {
+    std::scoped_lock l{mutex};
+    for (auto& session : sessions) {
+        if (session != nullptr) {
+            session->ReleaseAndRegisterBuffers();
+        }
+    }
+}
+
+u32 Manager::GetAudioOutDeviceNames(
+    std::vector<AudioRenderer::AudioDevice::AudioDeviceName>& names) const {
+    names.push_back({"DeviceOut"});
+    return 1;
+}
+
+} // namespace AudioCore::AudioOut

src/audio_core/audio_out_manager.h

@@ -0,0 +1,89 @@
+// SPDX-FileCopyrightText: Copyright 2022 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#include <array>
+#include <mutex>
+
+#include "audio_core/renderer/audio_device.h"
+
+namespace Core {
+class System;
+}
+
+namespace AudioCore::AudioOut {
+class Out;
+
+constexpr size_t MaxOutSessions = 12;
+/**
+ * Manages all audio out sessions.
+ */
+class Manager {
+public:
+    explicit Manager(Core::System& system);
+
+    /**
+     * Acquire a free session id for opening a new audio out.
+     *
+     * @param session_id - Output session_id.
+     * @return Result code.
+     */
+    Result AcquireSessionId(size_t& session_id);
+
+    /**
+     * Release a session id on close.
+     *
+     * @param session_id - Session id to free.
+     */
+    void ReleaseSessionId(size_t session_id);
+
+    /**
+     * Link this manager to the main audio manager.
+     *
+     * @return Result code.
+     */
+    Result LinkToManager();
+
+    /**
+     * Start the audio out manager.
+     */
+    void Start();
+
+    /**
+     * Callback function, called by the audio manager when the audio out event is signalled.
+     */
+    void BufferReleaseAndRegister();
+
+    /**
+     * Get a list of audio out device names.
+     *
+     * @oaram names     - Output container to write names to.
+     * @return Number of names written.
+     */
+    u32 GetAudioOutDeviceNames(
+        std::vector<AudioRenderer::AudioDevice::AudioDeviceName>& names) const;
+
+    /// Core system
+    Core::System& system;
+    /// Array of session ids
+    std::array<size_t, MaxOutSessions> session_ids{};
+    /// Array of resource user ids
+    std::array<size_t, MaxOutSessions> applet_resource_user_ids{};
+    /// Pointer to each open session
+    std::array<std::shared_ptr<Out>, MaxOutSessions> sessions{};
+    /// The number of free sessions
+    size_t num_free_sessions{};
+    /// The next session id to be taken
+    size_t next_session_id{};
+    /// The next session id to be freed
+    size_t free_session_id{};
+    /// Whether this is linked to the audio manager
+    bool linked_to_manager{};
+    /// Whether the sessions have been started
+    bool sessions_started{};
+    /// Protect state due to audio manager callback
+    std::recursive_mutex mutex{};
+};
+
+} // namespace AudioCore::AudioOut

src/audio_core/audio_render_manager.cpp

@@ -0,0 +1,70 @@
+// SPDX-FileCopyrightText: Copyright 2022 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include "audio_core/audio_render_manager.h"
+#include "audio_core/common/audio_renderer_parameter.h"
+#include "audio_core/common/feature_support.h"
+#include "core/core.h"
+
+namespace AudioCore::AudioRenderer {
+
+Manager::Manager(Core::System& system_)
+    : system{system_}, system_manager{std::make_unique<SystemManager>(system)} {
+    std::iota(session_ids.begin(), session_ids.end(), 0);
+}
+
+Manager::~Manager() {
+    Stop();
+}
+
+void Manager::Stop() {
+    system_manager->Stop();
+}
+
+SystemManager& Manager::GetSystemManager() {
+    return *system_manager;
+}
+
+auto Manager::GetWorkBufferSize(const AudioRendererParameterInternal& params, u64& out_count)
+    -> Result {
+    if (!CheckValidRevision(params.revision)) {
+        return Service::Audio::ERR_INVALID_REVISION;
+    }
+
+    out_count = System::GetWorkBufferSize(params);
+
+    return ResultSuccess;
+}
+
+s32 Manager::GetSessionId() {
+    std::scoped_lock l{session_lock};
+    auto session_id{session_ids[session_count]};
+
+    if (session_id == -1) {
+        return -1;
+    }
+
+    session_ids[session_count] = -1;
+    session_count++;
+    return session_id;
+}
+
+void Manager::ReleaseSessionId(const s32 session_id) {
+    std::scoped_lock l{session_lock};
+    session_ids[--session_count] = session_id;
+}
+
+u32 Manager::GetSessionCount() {
+    std::scoped_lock l{session_lock};
+    return session_count;
+}
+
+bool Manager::AddSystem(System& system_) {
+    return system_manager->Add(system_);
+}
+
+bool Manager::RemoveSystem(System& system_) {
+    return system_manager->Remove(system_);
+}
+
+} // namespace AudioCore::AudioRenderer

src/audio_core/audio_render_manager.h

@@ -0,0 +1,103 @@
+// SPDX-FileCopyrightText: Copyright 2022 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#include <array>
+#include <memory>
+#include <mutex>
+
+#include "audio_core/common/common.h"
+#include "audio_core/renderer/system_manager.h"
+#include "core/hle/service/audio/errors.h"
+
+namespace Core {
+class System;
+}
+
+namespace AudioCore {
+struct AudioRendererParameterInternal;
+
+namespace AudioRenderer {
+/**
+ * Wrapper for the audio system manager, handles service calls.
+ */
+class Manager {
+public:
+    explicit Manager(Core::System& system);
+    ~Manager();
+
+    /**
+     * Stop the manager.
+     */
+    void Stop();
+
+    /**
+     * Get the system manager.
+     *
+     * @return The system manager.
+     */
+    SystemManager& GetSystemManager();
+
+    /**
+     * Get required size for the audio renderer workbuffer.
+     *
+     * @param params    - Input parameters with the numbers of voices/mixes/sinks etc.
+     * @param out_count - Output size of the required workbuffer.
+     * @return Result code.
+     */
+    Result GetWorkBufferSize(const AudioRendererParameterInternal& params, u64& out_count);
+
+    /**
+     * Get a new session id.
+     *
+     * @return The new session id. -1 if invalid, otherwise 0-MaxRendererSessions.
+     */
+    s32 GetSessionId();
+
+    /**
+     * Get the number of currently active sessions.
+     *
+     * @return The number of active sessions.
+     */
+    u32 GetSessionCount();
+
+    /**
+     * Add a renderer system to the manager.
+     * The system will be reguarly called to generate commands for the AudioRenderer.
+     *
+     * @param system - The system to add.
+     * @return True if the system was sucessfully added, otherwise false.
+     */
+    bool AddSystem(System& system);
+
+    /**
+     * Remove a renderer system from the manager.
+     *
+     * @param system - The system to remove.
+     * @return True if the system was sucessfully removed, otherwise false.
+     */
+    bool RemoveSystem(System& system);
+
+    /**
+     * Free a session id when the system wants to shut down.
+     *
+     * @param session_id - The session id to free.
+     */
+    void ReleaseSessionId(s32 session_id);
+
+private:
+    /// Core system
+    Core::System& system;
+    /// Session ids, -1 when in use
+    std::array<s32, MaxRendererSessions> session_ids{};
+    /// Number of active renderers
+    u32 session_count{};
+    /// Lock for interacting with the sessions
+    std::mutex session_lock{};
+    /// Regularly generates commands from the registered systems for the AudioRenderer
+    std::unique_ptr<SystemManager> system_manager{};
+};
+
+} // namespace AudioRenderer
+} // namespace AudioCore

src/audio_core/audio_renderer.cpp

@@ -1,343 +0,0 @@
-// SPDX-FileCopyrightText: Copyright 2018 yuzu Emulator Project
-// SPDX-License-Identifier: GPL-2.0-or-later
-
-#include <limits>
-#include <optional>
-#include <vector>
-
-#include "audio_core/audio_out.h"
-#include "audio_core/audio_renderer.h"
-#include "audio_core/common.h"
-#include "audio_core/info_updater.h"
-#include "audio_core/voice_context.h"
-#include "common/logging/log.h"
-#include "common/settings.h"
-#include "core/core_timing.h"
-#include "core/memory.h"
-
-namespace {
-[[nodiscard]] static constexpr s16 ClampToS16(s32 value) {
-    return static_cast<s16>(std::clamp(value, s32{std::numeric_limits<s16>::min()},
-                                       s32{std::numeric_limits<s16>::max()}));
-}
-
-[[nodiscard]] static constexpr s16 Mix2To1(s16 l_channel, s16 r_channel) {
-    // Mix 50% from left and 50% from right channel
-    constexpr float l_mix_amount = 50.0f / 100.0f;
-    constexpr float r_mix_amount = 50.0f / 100.0f;
-    return ClampToS16(static_cast<s32>((static_cast<float>(l_channel) * l_mix_amount) +
-                                       (static_cast<float>(r_channel) * r_mix_amount)));
-}
-
-[[maybe_unused, nodiscard]] static constexpr std::tuple<s16, s16> Mix6To2(
-    s16 fl_channel, s16 fr_channel, s16 fc_channel, [[maybe_unused]] s16 lf_channel, s16 bl_channel,
-    s16 br_channel) {
-    // Front channels are mixed 36.94%, Center channels are mixed to be 26.12% & the back channels
-    // are mixed to be 36.94%
-
-    constexpr float front_mix_amount = 36.94f / 100.0f;
-    constexpr float center_mix_amount = 26.12f / 100.0f;
-    constexpr float back_mix_amount = 36.94f / 100.0f;
-
-    // Mix 50% from left and 50% from right channel
-    const auto left = front_mix_amount * static_cast<float>(fl_channel) +
-                      center_mix_amount * static_cast<float>(fc_channel) +
-                      back_mix_amount * static_cast<float>(bl_channel);
-
-    const auto right = front_mix_amount * static_cast<float>(fr_channel) +
-                       center_mix_amount * static_cast<float>(fc_channel) +
-                       back_mix_amount * static_cast<float>(br_channel);
-
-    return {ClampToS16(static_cast<s32>(left)), ClampToS16(static_cast<s32>(right))};
-}
-
-[[nodiscard]] static constexpr std::tuple<s16, s16> Mix6To2WithCoefficients(
-    s16 fl_channel, s16 fr_channel, s16 fc_channel, s16 lf_channel, s16 bl_channel, s16 br_channel,
-    const std::array<float_le, 4>& coeff) {
-    const auto left =
-        static_cast<float>(fl_channel) * coeff[0] + static_cast<float>(fc_channel) * coeff[1] +
-        static_cast<float>(lf_channel) * coeff[2] + static_cast<float>(bl_channel) * coeff[3];
-
-    const auto right =
-        static_cast<float>(fr_channel) * coeff[0] + static_cast<float>(fc_channel) * coeff[1] +
-        static_cast<float>(lf_channel) * coeff[2] + static_cast<float>(br_channel) * coeff[3];
-
-    return {ClampToS16(static_cast<s32>(left)), ClampToS16(static_cast<s32>(right))};
-}
-
-} // namespace
-
-namespace AudioCore {
-constexpr s32 NUM_BUFFERS = 2;
-
-AudioRenderer::AudioRenderer(Core::Timing::CoreTiming& core_timing_, Core::Memory::Memory& memory_,
-                             AudioCommon::AudioRendererParameter params,
-                             Stream::ReleaseCallback&& release_callback,
-                             std::size_t instance_number)
-    : worker_params{params}, memory_pool_info(params.effect_count + params.voice_count * 4),
-      voice_context(params.voice_count), effect_context(params.effect_count), mix_context(),
-      sink_context(params.sink_count), splitter_context(),
-      voices(params.voice_count), memory{memory_},
-      command_generator(worker_params, voice_context, mix_context, splitter_context, effect_context,
-                        memory),
-      core_timing{core_timing_} {
-    behavior_info.SetUserRevision(params.revision);
-    splitter_context.Initialize(behavior_info, params.splitter_count,
-                                params.num_splitter_send_channels);
-    mix_context.Initialize(behavior_info, params.submix_count + 1, params.effect_count);
-    audio_out = std::make_unique<AudioCore::AudioOut>();
-    stream = audio_out->OpenStream(
-        core_timing, params.sample_rate, AudioCommon::STREAM_NUM_CHANNELS,
-        fmt::format("AudioRenderer-Instance{}", instance_number), std::move(release_callback));
-    process_event =
-        Core::Timing::CreateEvent(fmt::format("AudioRenderer-Instance{}-Process", instance_number),
-                                  [this](std::uintptr_t, s64, std::chrono::nanoseconds) {
-                                      ReleaseAndQueueBuffers();
-                                      return std::nullopt;
-                                  });
-    for (s32 i = 0; i < NUM_BUFFERS; ++i) {
-        QueueMixedBuffer(i);
-    }
-}
-
-AudioRenderer::~AudioRenderer() = default;
-
-Result AudioRenderer::Start() {
-    audio_out->StartStream(stream);
-    ReleaseAndQueueBuffers();
-    return ResultSuccess;
-}
-
-Result AudioRenderer::Stop() {
-    audio_out->StopStream(stream);
-    return ResultSuccess;
-}
-
-u32 AudioRenderer::GetSampleRate() const {
-    return worker_params.sample_rate;
-}
-
-u32 AudioRenderer::GetSampleCount() const {
-    return worker_params.sample_count;
-}
-
-u32 AudioRenderer::GetMixBufferCount() const {
-    return worker_params.mix_buffer_count;
-}
-
-Stream::State AudioRenderer::GetStreamState() const {
-    return stream->GetState();
-}
-
-Result AudioRenderer::UpdateAudioRenderer(const std::vector<u8>& input_params,
-                                          std::vector<u8>& output_params) {
-    std::scoped_lock lock{mutex};
-    InfoUpdater info_updater{input_params, output_params, behavior_info};
-
-    if (!info_updater.UpdateBehaviorInfo(behavior_info)) {
-        LOG_ERROR(Audio, "Failed to update behavior info input parameters");
-        return AudioCommon::Audren::ERR_INVALID_PARAMETERS;
-    }
-
-    if (!info_updater.UpdateMemoryPools(memory_pool_info)) {
-        LOG_ERROR(Audio, "Failed to update memory pool parameters");
-        return AudioCommon::Audren::ERR_INVALID_PARAMETERS;
-    }
-
-    if (!info_updater.UpdateVoiceChannelResources(voice_context)) {
-        LOG_ERROR(Audio, "Failed to update voice channel resource parameters");
-        return AudioCommon::Audren::ERR_INVALID_PARAMETERS;
-    }
-
-    if (!info_updater.UpdateVoices(voice_context, memory_pool_info, 0)) {
-        LOG_ERROR(Audio, "Failed to update voice parameters");
-        return AudioCommon::Audren::ERR_INVALID_PARAMETERS;
-    }
-
-    // TODO(ogniK): Deal with stopped audio renderer but updates still taking place
-    if (!info_updater.UpdateEffects(effect_context, true)) {
-        LOG_ERROR(Audio, "Failed to update effect parameters");
-        return AudioCommon::Audren::ERR_INVALID_PARAMETERS;
-    }
-
-    if (behavior_info.IsSplitterSupported()) {
-        if (!info_updater.UpdateSplitterInfo(splitter_context)) {
-            LOG_ERROR(Audio, "Failed to update splitter parameters");
-            return AudioCommon::Audren::ERR_INVALID_PARAMETERS;
-        }
-    }
-
-    const auto mix_result = info_updater.UpdateMixes(mix_context, worker_params.mix_buffer_count,
-                                                     splitter_context, effect_context);
-
-    if (mix_result.IsError()) {
-        LOG_ERROR(Audio, "Failed to update mix parameters");
-        return mix_result;
-    }
-
-    // TODO(ogniK): Sinks
-    if (!info_updater.UpdateSinks(sink_context)) {
-        LOG_ERROR(Audio, "Failed to update sink parameters");
-        return AudioCommon::Audren::ERR_INVALID_PARAMETERS;
-    }
-
-    // TODO(ogniK): Performance buffer
-    if (!info_updater.UpdatePerformanceBuffer()) {
-        LOG_ERROR(Audio, "Failed to update performance buffer parameters");
-        return AudioCommon::Audren::ERR_INVALID_PARAMETERS;
-    }
-
-    if (!info_updater.UpdateErrorInfo(behavior_info)) {
-        LOG_ERROR(Audio, "Failed to update error info");
-        return AudioCommon::Audren::ERR_INVALID_PARAMETERS;
-    }
-
-    if (behavior_info.IsElapsedFrameCountSupported()) {
-        if (!info_updater.UpdateRendererInfo(elapsed_frame_count)) {
-            LOG_ERROR(Audio, "Failed to update renderer info");
-            return AudioCommon::Audren::ERR_INVALID_PARAMETERS;
-        }
-    }
-    // TODO(ogniK): Statistics
-
-    if (!info_updater.WriteOutputHeader()) {
-        LOG_ERROR(Audio, "Failed to write output header");
-        return AudioCommon::Audren::ERR_INVALID_PARAMETERS;
-    }
-
-    // TODO(ogniK): Check when all sections are implemented
-
-    if (!info_updater.CheckConsumedSize()) {
-        LOG_ERROR(Audio, "Audio buffers were not consumed!");
-        return AudioCommon::Audren::ERR_INVALID_PARAMETERS;
-    }
-    return ResultSuccess;
-}
-
-void AudioRenderer::QueueMixedBuffer(Buffer::Tag tag) {
-    command_generator.PreCommand();
-    // Clear mix buffers before our next operation
-    command_generator.ClearMixBuffers();
-
-    // If the splitter is not in use, sort our mixes
-    if (!splitter_context.UsingSplitter()) {
-        mix_context.SortInfo();
-    }
-    // Sort our voices
-    voice_context.SortInfo();
-
-    // Handle samples
-    command_generator.GenerateVoiceCommands();
-    command_generator.GenerateSubMixCommands();
-    command_generator.GenerateFinalMixCommands();
-
-    command_generator.PostCommand();
-    // Base sample size
-    std::size_t BUFFER_SIZE{worker_params.sample_count};
-    // Samples, making sure to clear
-    std::vector<s16> buffer(BUFFER_SIZE * stream->GetNumChannels(), 0);
-
-    if (sink_context.InUse()) {
-        const auto stream_channel_count = stream->GetNumChannels();
-        const auto buffer_offsets = sink_context.OutputBuffers();
-        const auto channel_count = buffer_offsets.size();
-        const auto& final_mix = mix_context.GetFinalMixInfo();
-        const auto& in_params = final_mix.GetInParams();
-        std::vector<std::span<s32>> mix_buffers(channel_count);
-        for (std::size_t i = 0; i < channel_count; i++) {
-            mix_buffers[i] =
-                command_generator.GetMixBuffer(in_params.buffer_offset + buffer_offsets[i]);
-        }
-
-        for (std::size_t i = 0; i < BUFFER_SIZE; i++) {
-            if (channel_count == 1) {
-                const auto sample = ClampToS16(mix_buffers[0][i]);
-
-                // Place sample in all channels
-                for (u32 channel = 0; channel < stream_channel_count; channel++) {
-                    buffer[i * stream_channel_count + channel] = sample;
-                }
-
-                if (stream_channel_count == 6) {
-                    // Output stream has a LF channel, mute it!
-                    buffer[i * stream_channel_count + 3] = 0;
-                }
-
-            } else if (channel_count == 2) {
-                const auto l_sample = ClampToS16(mix_buffers[0][i]);
-                const auto r_sample = ClampToS16(mix_buffers[1][i]);
-                if (stream_channel_count == 1) {
-                    buffer[i * stream_channel_count + 0] = Mix2To1(l_sample, r_sample);
-                } else if (stream_channel_count == 2) {
-                    buffer[i * stream_channel_count + 0] = l_sample;
-                    buffer[i * stream_channel_count + 1] = r_sample;
-                } else if (stream_channel_count == 6) {
-                    buffer[i * stream_channel_count + 0] = l_sample;
-                    buffer[i * stream_channel_count + 1] = r_sample;
-
-                    // Combine both left and right channels to the center channel
-                    buffer[i * stream_channel_count + 2] = Mix2To1(l_sample, r_sample);
-
-                    buffer[i * stream_channel_count + 4] = l_sample;
-                    buffer[i * stream_channel_count + 5] = r_sample;
-                }
-
-            } else if (channel_count == 6) {
-                const auto fl_sample = ClampToS16(mix_buffers[0][i]);
-                const auto fr_sample = ClampToS16(mix_buffers[1][i]);
-                const auto fc_sample = ClampToS16(mix_buffers[2][i]);
-                const auto lf_sample = ClampToS16(mix_buffers[3][i]);
-                const auto bl_sample = ClampToS16(mix_buffers[4][i]);
-                const auto br_sample = ClampToS16(mix_buffers[5][i]);
-
-                if (stream_channel_count == 1) {
-                    // Games seem to ignore the center channel half the time, we use the front left
-                    // and right channel for mixing as that's where majority of the audio goes
-                    buffer[i * stream_channel_count + 0] = Mix2To1(fl_sample, fr_sample);
-                } else if (stream_channel_count == 2) {
-                    // Mix all channels into 2 channels
-                    const auto [left, right] = Mix6To2WithCoefficients(
-                        fl_sample, fr_sample, fc_sample, lf_sample, bl_sample, br_sample,
-                        sink_context.GetDownmixCoefficients());
-                    buffer[i * stream_channel_count + 0] = left;
-                    buffer[i * stream_channel_count + 1] = right;
-                } else if (stream_channel_count == 6) {
-                    // Pass through
-                    buffer[i * stream_channel_count + 0] = fl_sample;
-                    buffer[i * stream_channel_count + 1] = fr_sample;
-                    buffer[i * stream_channel_count + 2] = fc_sample;
-                    buffer[i * stream_channel_count + 3] = lf_sample;
-                    buffer[i * stream_channel_count + 4] = bl_sample;
-                    buffer[i * stream_channel_count + 5] = br_sample;
-                }
-            }
-        }
-    }
-
-    audio_out->QueueBuffer(stream, tag, std::move(buffer));
-    elapsed_frame_count++;
-    voice_context.UpdateStateByDspShared();
-}
-
-void AudioRenderer::ReleaseAndQueueBuffers() {
-    if (!stream->IsPlaying()) {
-        return;
-    }
-
-    {
-        std::scoped_lock lock{mutex};
-        const auto released_buffers{audio_out->GetTagsAndReleaseBuffers(stream)};
-        for (const auto& tag : released_buffers) {
-            QueueMixedBuffer(tag);
-        }
-    }
-
-    const f32 sample_rate = static_cast<f32>(GetSampleRate());
-    const f32 sample_count = static_cast<f32>(GetSampleCount());
-    const f32 consume_rate = sample_rate / (sample_count * (sample_count / 240));
-    const s32 ms = (1000 / static_cast<s32>(consume_rate)) - 1;
-    const std::chrono::milliseconds next_event_time(std::max(ms / NUM_BUFFERS, 1));
-    core_timing.ScheduleEvent(next_event_time, process_event, {});
-}
-
-} // namespace AudioCore

src/audio_core/audio_renderer.h

@@ -1,78 +0,0 @@
-// SPDX-FileCopyrightText: Copyright 2018 yuzu Emulator Project
-// SPDX-License-Identifier: GPL-2.0-or-later
-
-#pragma once
-
-#include <array>
-#include <memory>
-#include <mutex>
-#include <vector>
-
-#include "audio_core/behavior_info.h"
-#include "audio_core/command_generator.h"
-#include "audio_core/common.h"
-#include "audio_core/effect_context.h"
-#include "audio_core/memory_pool.h"
-#include "audio_core/mix_context.h"
-#include "audio_core/sink_context.h"
-#include "audio_core/splitter_context.h"
-#include "audio_core/stream.h"
-#include "audio_core/voice_context.h"
-#include "common/common_funcs.h"
-#include "common/common_types.h"
-#include "common/swap.h"
-#include "core/hle/result.h"
-
-namespace Core::Timing {
-class CoreTiming;
-}
-
-namespace Core::Memory {
-class Memory;
-}
-
-namespace AudioCore {
-using DSPStateHolder = std::array<VoiceState*, AudioCommon::MAX_CHANNEL_COUNT>;
-
-class AudioOut;
-
-class AudioRenderer {
-public:
-    AudioRenderer(Core::Timing::CoreTiming& core_timing, Core::Memory::Memory& memory_,
-                  AudioCommon::AudioRendererParameter params,
-                  Stream::ReleaseCallback&& release_callback, std::size_t instance_number);
-    ~AudioRenderer();
-
-    [[nodiscard]] Result UpdateAudioRenderer(const std::vector<u8>& input_params,
-                                             std::vector<u8>& output_params);
-    [[nodiscard]] Result Start();
-    [[nodiscard]] Result Stop();
-    void QueueMixedBuffer(Buffer::Tag tag);
-    void ReleaseAndQueueBuffers();
-    [[nodiscard]] u32 GetSampleRate() const;
-    [[nodiscard]] u32 GetSampleCount() const;
-    [[nodiscard]] u32 GetMixBufferCount() const;
-    [[nodiscard]] Stream::State GetStreamState() const;
-
-private:
-    BehaviorInfo behavior_info{};
-
-    AudioCommon::AudioRendererParameter worker_params;
-    std::vector<ServerMemoryPoolInfo> memory_pool_info;
-    VoiceContext voice_context;
-    EffectContext effect_context;
-    MixContext mix_context;
-    SinkContext sink_context;
-    SplitterContext splitter_context;
-    std::vector<VoiceState> voices;
-    std::unique_ptr<AudioOut> audio_out;
-    StreamPtr stream;
-    Core::Memory::Memory& memory;
-    CommandGenerator command_generator;
-    std::size_t elapsed_frame_count{};
-    Core::Timing::CoreTiming& core_timing;
-    std::shared_ptr<Core::Timing::EventType> process_event;
-    std::mutex mutex;
-};
-
-} // namespace AudioCore

src/audio_core/behavior_info.cpp

@@ -1,104 +0,0 @@
-// SPDX-FileCopyrightText: Copyright 2020 yuzu Emulator Project
-// SPDX-License-Identifier: GPL-2.0-or-later
-
-#include <cstring>
-#include "audio_core/behavior_info.h"
-#include "audio_core/common.h"
-#include "common/logging/log.h"
-
-namespace AudioCore {
-
-BehaviorInfo::BehaviorInfo() : process_revision(AudioCommon::CURRENT_PROCESS_REVISION) {}
-BehaviorInfo::~BehaviorInfo() = default;
-
-bool BehaviorInfo::UpdateOutput(std::vector<u8>& buffer, std::size_t offset) {
-    if (!AudioCommon::CanConsumeBuffer(buffer.size(), offset, sizeof(OutParams))) {
-        LOG_ERROR(Audio, "Buffer is an invalid size!");
-        return false;
-    }
-
-    OutParams params{};
-    std::memcpy(params.errors.data(), errors.data(), sizeof(ErrorInfo) * errors.size());
-    params.error_count = static_cast<u32_le>(error_count);
-    std::memcpy(buffer.data() + offset, &params, sizeof(OutParams));
-    return true;
-}
-
-void BehaviorInfo::ClearError() {
-    error_count = 0;
-}
-
-void BehaviorInfo::UpdateFlags(u64_le dest_flags) {
-    flags = dest_flags;
-}
-
-void BehaviorInfo::SetUserRevision(u32_le revision) {
-    user_revision = revision;
-}
-
-u32_le BehaviorInfo::GetUserRevision() const {
-    return user_revision;
-}
-
-u32_le BehaviorInfo::GetProcessRevision() const {
-    return process_revision;
-}
-
-bool BehaviorInfo::IsAdpcmLoopContextBugFixed() const {
-    return AudioCommon::IsRevisionSupported(2, user_revision);
-}
-
-bool BehaviorInfo::IsSplitterSupported() const {
-    return AudioCommon::IsRevisionSupported(2, user_revision);
-}
-
-bool BehaviorInfo::IsLongSizePreDelaySupported() const {
-    return AudioCommon::IsRevisionSupported(3, user_revision);
-}
-
-bool BehaviorInfo::IsAudioRendererProcessingTimeLimit80PercentSupported() const {
-    return AudioCommon::IsRevisionSupported(5, user_revision);
-}
-
-bool BehaviorInfo::IsAudioRendererProcessingTimeLimit75PercentSupported() const {
-    return AudioCommon::IsRevisionSupported(4, user_revision);
-}
-
-bool BehaviorInfo::IsAudioRendererProcessingTimeLimit70PercentSupported() const {
-    return AudioCommon::IsRevisionSupported(1, user_revision);
-}
-
-bool BehaviorInfo::IsElapsedFrameCountSupported() const {
-    return AudioCommon::IsRevisionSupported(5, user_revision);
-}
-
-bool BehaviorInfo::IsMemoryPoolForceMappingEnabled() const {
-    return (flags & 1) != 0;
-}
-
-bool BehaviorInfo::IsFlushVoiceWaveBuffersSupported() const {
-    return AudioCommon::IsRevisionSupported(5, user_revision);
-}
-
-bool BehaviorInfo::IsVoicePlayedSampleCountResetAtLoopPointSupported() const {
-    return AudioCommon::IsRevisionSupported(5, user_revision);
-}
-
-bool BehaviorInfo::IsVoicePitchAndSrcSkippedSupported() const {
-    return AudioCommon::IsRevisionSupported(5, user_revision);
-}
-
-bool BehaviorInfo::IsMixInParameterDirtyOnlyUpdateSupported() const {
-    return AudioCommon::IsRevisionSupported(7, user_revision);
-}
-
-bool BehaviorInfo::IsSplitterBugFixed() const {
-    return AudioCommon::IsRevisionSupported(5, user_revision);
-}
-
-void BehaviorInfo::CopyErrorInfo(BehaviorInfo::OutParams& dst) {
-    dst.error_count = static_cast<u32>(error_count);
-    std::copy(errors.begin(), errors.begin() + error_count, dst.errors.begin());
-}
-
-} // namespace AudioCore

src/audio_core/behavior_info.h

@@ -1,71 +0,0 @@
-// SPDX-FileCopyrightText: Copyright 2020 yuzu Emulator Project
-// SPDX-License-Identifier: GPL-2.0-or-later
-
-#pragma once
-
-#include <array>
-
-#include <vector>
-#include "common/common_funcs.h"
-#include "common/common_types.h"
-#include "common/swap.h"
-
-namespace AudioCore {
-class BehaviorInfo {
-public:
-    struct ErrorInfo {
-        u32_le result{};
-        INSERT_PADDING_WORDS(1);
-        u64_le result_info{};
-    };
-    static_assert(sizeof(ErrorInfo) == 0x10, "ErrorInfo is an invalid size");
-
-    struct InParams {
-        u32_le revision{};
-        u32_le padding{};
-        u64_le flags{};
-    };
-    static_assert(sizeof(InParams) == 0x10, "InParams is an invalid size");
-
-    struct OutParams {
-        std::array<ErrorInfo, 10> errors{};
-        u32_le error_count{};
-        INSERT_PADDING_BYTES(12);
-    };
-    static_assert(sizeof(OutParams) == 0xb0, "OutParams is an invalid size");
-
-    explicit BehaviorInfo();
-    ~BehaviorInfo();
-
-    bool UpdateOutput(std::vector<u8>& buffer, std::size_t offset);
-
-    void ClearError();
-    void UpdateFlags(u64_le dest_flags);
-    void SetUserRevision(u32_le revision);
-    [[nodiscard]] u32_le GetUserRevision() const;
-    [[nodiscard]] u32_le GetProcessRevision() const;
-
-    [[nodiscard]] bool IsAdpcmLoopContextBugFixed() const;
-    [[nodiscard]] bool IsSplitterSupported() const;
-    [[nodiscard]] bool IsLongSizePreDelaySupported() const;
-    [[nodiscard]] bool IsAudioRendererProcessingTimeLimit80PercentSupported() const;
-    [[nodiscard]] bool IsAudioRendererProcessingTimeLimit75PercentSupported() const;
-    [[nodiscard]] bool IsAudioRendererProcessingTimeLimit70PercentSupported() const;
-    [[nodiscard]] bool IsElapsedFrameCountSupported() const;
-    [[nodiscard]] bool IsMemoryPoolForceMappingEnabled() const;
-    [[nodiscard]] bool IsFlushVoiceWaveBuffersSupported() const;
-    [[nodiscard]] bool IsVoicePlayedSampleCountResetAtLoopPointSupported() const;
-    [[nodiscard]] bool IsVoicePitchAndSrcSkippedSupported() const;
-    [[nodiscard]] bool IsMixInParameterDirtyOnlyUpdateSupported() const;
-    [[nodiscard]] bool IsSplitterBugFixed() const;
-    void CopyErrorInfo(OutParams& dst);
-
-private:
-    u32_le process_revision{};
-    u32_le user_revision{};
-    u64_le flags{};
-    std::array<ErrorInfo, 10> errors{};
-    std::size_t error_count{};
-};
-
-} // namespace AudioCore

src/audio_core/buffer.h

@@ -1,44 +0,0 @@
-// SPDX-FileCopyrightText: Copyright 2018 yuzu Emulator Project
-// SPDX-License-Identifier: GPL-2.0-or-later
-
-#pragma once
-
-#include <memory>
-#include <vector>
-
-#include "common/common_types.h"
-
-namespace AudioCore {
-
-/**
- * Represents a buffer of audio samples to be played in an audio stream
- */
-class Buffer {
-public:
-    using Tag = u64;
-
-    Buffer(Tag tag_, std::vector<s16>&& samples_) : tag{tag_}, samples{std::move(samples_)} {}
-
-    /// Returns the raw audio data for the buffer
-    std::vector<s16>& GetSamples() {
-        return samples;
-    }
-
-    /// Returns the raw audio data for the buffer
-    const std::vector<s16>& GetSamples() const {
-        return samples;
-    }
-
-    /// Returns the buffer tag, this is provided by the game to the audout service
-    Tag GetTag() const {
-        return tag;
-    }
-
-private:
-    Tag tag;
-    std::vector<s16> samples;
-};
-
-using BufferPtr = std::shared_ptr<Buffer>;
-
-} // namespace AudioCore

src/audio_core/codec.cpp

@@ -1,77 +0,0 @@
-// SPDX-FileCopyrightText: Copyright 2018 yuzu Emulator Project
-// SPDX-License-Identifier: GPL-2.0-or-later
-
-#include <algorithm>
-
-#include "audio_core/codec.h"
-
-namespace AudioCore::Codec {
-
-std::vector<s16> DecodeADPCM(const u8* const data, std::size_t size, const ADPCM_Coeff& coeff,
-                             ADPCMState& state) {
-    // GC-ADPCM with scale factor and variable coefficients.
-    // Frames are 8 bytes long containing 14 samples each.
-    // Samples are 4 bits (one nibble) long.
-
-    constexpr std::size_t FRAME_LEN = 8;
-    constexpr std::size_t SAMPLES_PER_FRAME = 14;
-    static constexpr std::array<int, 16> SIGNED_NIBBLES{
-        0, 1, 2, 3, 4, 5, 6, 7, -8, -7, -6, -5, -4, -3, -2, -1,
-    };
-
-    const std::size_t sample_count = (size / FRAME_LEN) * SAMPLES_PER_FRAME;
-    const std::size_t ret_size =
-        sample_count % 2 == 0 ? sample_count : sample_count + 1; // Ensure multiple of two.
-    std::vector<s16> ret(ret_size);
-
-    int yn1 = state.yn1, yn2 = state.yn2;
-
-    const std::size_t NUM_FRAMES =
-        (sample_count + (SAMPLES_PER_FRAME - 1)) / SAMPLES_PER_FRAME; // Round up.
-    for (std::size_t framei = 0; framei < NUM_FRAMES; framei++) {
-        const int frame_header = data[framei * FRAME_LEN];
-        const int scale = 1 << (frame_header & 0xF);
-        const int idx = (frame_header >> 4) & 0x7;
-
-        // Coefficients are fixed point with 11 bits fractional part.
-        const int coef1 = coeff[idx * 2 + 0];
-        const int coef2 = coeff[idx * 2 + 1];
-
-        // Decodes an audio sample. One nibble produces one sample.
-        const auto decode_sample = [&](const int nibble) -> s16 {
-            const int xn = nibble * scale;
-            // We first transform everything into 11 bit fixed point, perform the second order
-            // digital filter, then transform back.
-            // 0x400 == 0.5 in 11 bit fixed point.
-            // Filter: y[n] = x[n] + 0.5 + c1 * y[n-1] + c2 * y[n-2]
-            int val = ((xn << 11) + 0x400 + coef1 * yn1 + coef2 * yn2) >> 11;
-            // Clamp to output range.
-            val = std::clamp<s32>(val, -32768, 32767);
-            // Advance output feedback.
-            yn2 = yn1;
-            yn1 = val;
-            return static_cast<s16>(val);
-        };
-
-        std::size_t outputi = framei * SAMPLES_PER_FRAME;
-        std::size_t datai = framei * FRAME_LEN + 1;
-        for (std::size_t i = 0; i < SAMPLES_PER_FRAME && outputi < sample_count; i += 2) {
-            const s16 sample1 = decode_sample(SIGNED_NIBBLES[data[datai] >> 4]);
-            ret[outputi] = sample1;
-            outputi++;
-
-            const s16 sample2 = decode_sample(SIGNED_NIBBLES[data[datai] & 0xF]);
-            ret[outputi] = sample2;
-            outputi++;
-
-            datai++;
-        }
-    }
-
-    state.yn1 = static_cast<s16>(yn1);
-    state.yn2 = static_cast<s16>(yn2);
-
-    return ret;
-}
-
-} // namespace AudioCore::Codec

src/audio_core/codec.h

@@ -1,43 +0,0 @@
-// SPDX-FileCopyrightText: Copyright 2018 yuzu Emulator Project
-// SPDX-License-Identifier: GPL-2.0-or-later
-
-#pragma once
-
-#include <array>
-#include <vector>
-
-#include "common/common_types.h"
-
-namespace AudioCore::Codec {
-
-enum class PcmFormat : u32 {
-    Invalid = 0,
-    Int8 = 1,
-    Int16 = 2,
-    Int24 = 3,
-    Int32 = 4,
-    PcmFloat = 5,
-    Adpcm = 6,
-};
-
-/// See: Codec::DecodeADPCM
-struct ADPCMState {
-    // Two historical samples from previous processed buffer,
-    // required for ADPCM decoding
-    s16 yn1; ///< y[n-1]
-    s16 yn2; ///< y[n-2]
-};
-
-using ADPCM_Coeff = std::array<s16, 16>;
-
-/**
- * @param data Pointer to buffer that contains ADPCM data to decode
- * @param size Size of buffer in bytes
- * @param coeff ADPCM coefficients
- * @param state ADPCM state, this is updated with new state
- * @return Decoded stereo signed PCM16 data, sample_count in length
- */
-std::vector<s16> DecodeADPCM(const u8* data, std::size_t size, const ADPCM_Coeff& coeff,
-                             ADPCMState& state);
-
-}; // namespace AudioCore::Codec

src/audio_core/command_generator.h

@@ -1,110 +0,0 @@
-// SPDX-FileCopyrightText: Copyright 2020 yuzu Emulator Project
-// SPDX-License-Identifier: GPL-2.0-or-later
-
-#pragma once
-
-#include <array>
-#include <span>
-#include "audio_core/common.h"
-#include "audio_core/voice_context.h"
-#include "common/common_types.h"
-
-namespace Core::Memory {
-class Memory;
-}
-
-namespace AudioCore {
-class MixContext;
-class SplitterContext;
-class ServerSplitterDestinationData;
-class ServerMixInfo;
-class EffectContext;
-class EffectBase;
-struct AuxInfoDSP;
-struct I3dl2ReverbParams;
-struct I3dl2ReverbState;
-using MixVolumeBuffer = std::array<float, AudioCommon::MAX_MIX_BUFFERS>;
-
-class CommandGenerator {
-public:
-    explicit CommandGenerator(AudioCommon::AudioRendererParameter& worker_params_,
-                              VoiceContext& voice_context_, MixContext& mix_context_,
-                              SplitterContext& splitter_context_, EffectContext& effect_context_,
-                              Core::Memory::Memory& memory_);
-    ~CommandGenerator();
-
-    void ClearMixBuffers();
-    void GenerateVoiceCommands();
-    void GenerateVoiceCommand(ServerVoiceInfo& voice_info);
-    void GenerateSubMixCommands();
-    void GenerateFinalMixCommands();
-    void PreCommand();
-    void PostCommand();
-
-    [[nodiscard]] std::span<s32> GetChannelMixBuffer(s32 channel);
-    [[nodiscard]] std::span<const s32> GetChannelMixBuffer(s32 channel) const;
-    [[nodiscard]] std::span<s32> GetMixBuffer(std::size_t index);
-    [[nodiscard]] std::span<const s32> GetMixBuffer(std::size_t index) const;
-    [[nodiscard]] std::size_t GetMixChannelBufferOffset(s32 channel) const;
-
-    [[nodiscard]] std::size_t GetTotalMixBufferCount() const;
-
-private:
-    void GenerateDataSourceCommand(ServerVoiceInfo& voice_info, VoiceState& dsp_state, s32 channel);
-    void GenerateBiquadFilterCommandForVoice(ServerVoiceInfo& voice_info, VoiceState& dsp_state,
-                                             s32 mix_buffer_count, s32 channel);
-    void GenerateVolumeRampCommand(float last_volume, float current_volume, s32 channel,
-                                   s32 node_id);
-    void GenerateVoiceMixCommand(const MixVolumeBuffer& mix_volumes,
-                                 const MixVolumeBuffer& last_mix_volumes, VoiceState& dsp_state,
-                                 s32 mix_buffer_offset, s32 mix_buffer_count, s32 voice_index,
-                                 s32 node_id);
-    void GenerateSubMixCommand(ServerMixInfo& mix_info);
-    void GenerateMixCommands(ServerMixInfo& mix_info);
-    void GenerateMixCommand(std::size_t output_offset, std::size_t input_offset, float volume,
-                            s32 node_id);
-    void GenerateFinalMixCommand();
-    void GenerateBiquadFilterCommand(s32 mix_buffer, const BiquadFilterParameter& params,
-                                     std::array<s64, 2>& state, std::size_t input_offset,
-                                     std::size_t output_offset, s32 sample_count, s32 node_id);
-    void GenerateDepopPrepareCommand(VoiceState& dsp_state, std::size_t mix_buffer_count,
-                                     std::size_t mix_buffer_offset);
-    void GenerateDepopForMixBuffersCommand(std::size_t mix_buffer_count,
-                                           std::size_t mix_buffer_offset, s32 sample_rate);
-    void GenerateEffectCommand(ServerMixInfo& mix_info);
-    void GenerateI3dl2ReverbEffectCommand(s32 mix_buffer_offset, EffectBase* info, bool enabled);
-    void GenerateBiquadFilterEffectCommand(s32 mix_buffer_offset, EffectBase* info, bool enabled);
-    void GenerateAuxCommand(s32 mix_buffer_offset, EffectBase* info, bool enabled);
-    [[nodiscard]] ServerSplitterDestinationData* GetDestinationData(s32 splitter_id, s32 index);
-
-    s32 WriteAuxBuffer(AuxInfoDSP& dsp_info, VAddr send_buffer, u32 max_samples,
-                       std::span<const s32> data, u32 sample_count, u32 write_offset,
-                       u32 write_count);
-    s32 ReadAuxBuffer(AuxInfoDSP& recv_info, VAddr recv_buffer, u32 max_samples,
-                      std::span<s32> out_data, u32 sample_count, u32 read_offset, u32 read_count);
-
-    void InitializeI3dl2Reverb(I3dl2ReverbParams& info, I3dl2ReverbState& state,
-                               std::vector<u8>& work_buffer);
-    void UpdateI3dl2Reverb(I3dl2ReverbParams& info, I3dl2ReverbState& state, bool should_clear);
-    // DSP Code
-    template <typename T>
-    s32 DecodePcm(ServerVoiceInfo& voice_info, VoiceState& dsp_state, s32 sample_start_offset,
-                  s32 sample_end_offset, s32 sample_count, s32 channel, std::size_t mix_offset);
-    s32 DecodeAdpcm(ServerVoiceInfo& voice_info, VoiceState& dsp_state, s32 sample_start_offset,
-                    s32 sample_end_offset, s32 sample_count, s32 channel, std::size_t mix_offset);
-    void DecodeFromWaveBuffers(ServerVoiceInfo& voice_info, std::span<s32> output,
-                               VoiceState& dsp_state, s32 channel, s32 target_sample_rate,
-                               s32 sample_count, s32 node_id);
-
-    AudioCommon::AudioRendererParameter& worker_params;
-    VoiceContext& voice_context;
-    MixContext& mix_context;
-    SplitterContext& splitter_context;
-    EffectContext& effect_context;
-    Core::Memory::Memory& memory;
-    std::vector<s32> mix_buffer{};
-    std::vector<s32> sample_buffer{};
-    std::vector<s32> depop_buffer{};
-    bool dumping_frame{false};
-};
-} // namespace AudioCore

src/audio_core/common.h

@@ -1,132 +0,0 @@
-// SPDX-FileCopyrightText: Copyright 2020 yuzu Emulator Project
-// SPDX-License-Identifier: GPL-2.0-or-later
-
-#pragma once
-
-#include "common/common_funcs.h"
-#include "common/common_types.h"
-#include "common/swap.h"
-#include "core/hle/result.h"
-
-namespace AudioCommon {
-namespace Audren {
-constexpr Result ERR_INVALID_PARAMETERS{ErrorModule::Audio, 41};
-constexpr Result ERR_SPLITTER_SORT_FAILED{ErrorModule::Audio, 43};
-} // namespace Audren
-
-constexpr u8 BASE_REVISION = '0';
-constexpr u32_le CURRENT_PROCESS_REVISION =
-    Common::MakeMagic('R', 'E', 'V', static_cast<u8>(BASE_REVISION + 0xA));
-constexpr std::size_t MAX_MIX_BUFFERS = 24;
-constexpr std::size_t MAX_BIQUAD_FILTERS = 2;
-constexpr std::size_t MAX_CHANNEL_COUNT = 6;
-constexpr std::size_t MAX_WAVE_BUFFERS = 4;
-constexpr std::size_t MAX_SAMPLE_HISTORY = 4;
-constexpr u32 STREAM_SAMPLE_RATE = 48000;
-constexpr u32 STREAM_NUM_CHANNELS = 2;
-constexpr s32 NO_SPLITTER = -1;
-constexpr s32 NO_MIX = 0x7fffffff;
-constexpr s32 NO_FINAL_MIX = std::numeric_limits<s32>::min();
-constexpr s32 FINAL_MIX = 0;
-constexpr s32 NO_EFFECT_ORDER = -1;
-constexpr std::size_t TEMP_MIX_BASE_SIZE = 0x3f00; // TODO(ogniK): Work out this constant
-// Any size checks seem to take the sample history into account
-// and our const ends up being 0x3f04, the 4 bytes are most
-// likely the sample history
-constexpr std::size_t TOTAL_TEMP_MIX_SIZE = TEMP_MIX_BASE_SIZE + AudioCommon::MAX_SAMPLE_HISTORY;
-constexpr f32 I3DL2REVERB_MAX_LEVEL = 5000.0f;
-constexpr f32 I3DL2REVERB_MIN_REFLECTION_DURATION = 0.02f;
-constexpr std::size_t I3DL2REVERB_TAPS = 20;
-constexpr std::size_t I3DL2REVERB_DELAY_LINE_COUNT = 4;
-using Fractional = s32;
-
-template <typename T>
-constexpr Fractional ToFractional(T x) {
-    return static_cast<Fractional>(x * static_cast<T>(0x4000));
-}
-
-constexpr Fractional MultiplyFractional(Fractional lhs, Fractional rhs) {
-    return static_cast<Fractional>(static_cast<s64>(lhs) * rhs >> 14);
-}
-
-constexpr s32 FractionalToFixed(Fractional x) {
-    const auto s = x & (1 << 13);
-    return static_cast<s32>(x >> 14) + s;
-}
-
-constexpr s32 CalculateDelaySamples(s32 sample_rate_khz, float time) {
-    return FractionalToFixed(MultiplyFractional(ToFractional(sample_rate_khz), ToFractional(time)));
-}
-
-static constexpr u32 VersionFromRevision(u32_le rev) {
-    // "REV7" -> 7
-    return ((rev >> 24) & 0xff) - 0x30;
-}
-
-static constexpr bool IsRevisionSupported(u32 required, u32_le user_revision) {
-    const auto base = VersionFromRevision(user_revision);
-    return required <= base;
-}
-
-static constexpr bool IsValidRevision(u32_le revision) {
-    const auto base = VersionFromRevision(revision);
-    constexpr auto max_rev = VersionFromRevision(CURRENT_PROCESS_REVISION);
-    return base <= max_rev;
-}
-
-static constexpr bool CanConsumeBuffer(std::size_t size, std::size_t offset, std::size_t required) {
-    if (offset > size) {
-        return false;
-    }
-    if (size < required) {
-        return false;
-    }
-    if ((size - offset) < required) {
-        return false;
-    }
-    return true;
-}
-
-struct UpdateDataSizes {
-    u32_le behavior{};
-    u32_le memory_pool{};
-    u32_le voice{};
-    u32_le voice_channel_resource{};
-    u32_le effect{};
-    u32_le mixer{};
-    u32_le sink{};
-    u32_le performance{};
-    u32_le splitter{};
-    u32_le render_info{};
-    INSERT_PADDING_WORDS(4);
-};
-static_assert(sizeof(UpdateDataSizes) == 0x38, "UpdateDataSizes is an invalid size");
-
-struct UpdateDataHeader {
-    u32_le revision{};
-    UpdateDataSizes size{};
-    u32_le total_size{};
-};
-static_assert(sizeof(UpdateDataHeader) == 0x40, "UpdateDataHeader is an invalid size");
-
-struct AudioRendererParameter {
-    u32_le sample_rate;
-    u32_le sample_count;
-    u32_le mix_buffer_count;
-    u32_le submix_count;
-    u32_le voice_count;
-    u32_le sink_count;
-    u32_le effect_count;
-    u32_le performance_frame_count;
-    u8 is_voice_drop_enabled;
-    u8 unknown_21;
-    u8 unknown_22;
-    u8 execution_mode;
-    u32_le splitter_count;
-    u32_le num_splitter_send_channels;
-    u32_le unknown_30;
-    u32_le revision;
-};
-static_assert(sizeof(AudioRendererParameter) == 52, "AudioRendererParameter is an invalid size");
-
-} // namespace AudioCommon

src/audio_core/common/audio_renderer_parameter.h

@@ -0,0 +1,60 @@
+// SPDX-FileCopyrightText: Copyright 2022 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#include <span>
+
+#include "audio_core/renderer/behavior/behavior_info.h"
+#include "audio_core/renderer/memory/memory_pool_info.h"
+#include "audio_core/renderer/upsampler/upsampler_manager.h"
+#include "common/common_types.h"
+
+namespace AudioCore {
+/**
+ * Execution mode of the audio renderer.
+ * Only Auto is currently supported.
+ */
+enum class ExecutionMode : u8 {
+    Auto,
+    Manual,
+};
+
+/**
+ * Parameters from the game, passed to the audio renderer for initialisation.
+ */
+struct AudioRendererParameterInternal {
+    /* 0x00 */ u32 sample_rate;
+    /* 0x04 */ u32 sample_count;
+    /* 0x08 */ u32 mixes;
+    /* 0x0C */ u32 sub_mixes;
+    /* 0x10 */ u32 voices;
+    /* 0x14 */ u32 sinks;
+    /* 0x18 */ u32 effects;
+    /* 0x1C */ u32 perf_frames;
+    /* 0x20 */ u16 voice_drop_enabled;
+    /* 0x22 */ u8 rendering_device;
+    /* 0x23 */ ExecutionMode execution_mode;
+    /* 0x24 */ u32 splitter_infos;
+    /* 0x28 */ s32 splitter_destinations;
+    /* 0x2C */ u32 external_context_size;
+    /* 0x30 */ u32 revision;
+    /* 0x34 */ char unk34[0x4];
+};
+static_assert(sizeof(AudioRendererParameterInternal) == 0x38,
+              "AudioRendererParameterInternal has the wrong size!");
+
+/**
+ * Context for rendering, contains a bunch of useful fields for the command generator.
+ */
+struct AudioRendererSystemContext {
+    s32 session_id;
+    s8 channels;
+    s16 mix_buffer_count;
+    AudioRenderer::BehaviorInfo* behavior;
+    std::span<s32> depop_buffer;
+    AudioRenderer::UpsamplerManager* upsampler_manager;
+    AudioRenderer::MemoryPoolInfo* memory_pool_info;
+};
+
+} // namespace AudioCore

src/audio_core/common/common.h

@@ -0,0 +1,138 @@
+// SPDX-FileCopyrightText: Copyright 2022 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#include <numeric>
+#include <span>
+
+#include "common/assert.h"
+#include "common/common_funcs.h"
+#include "common/common_types.h"
+
+namespace AudioCore {
+using CpuAddr = std::uintptr_t;
+
+enum class PlayState : u8 {
+    Started,
+    Stopped,
+    Paused,
+};
+
+enum class SrcQuality : u8 {
+    Medium,
+    High,
+    Low,
+};
+
+enum class SampleFormat : u8 {
+    Invalid,
+    PcmInt8,
+    PcmInt16,
+    PcmInt24,
+    PcmInt32,
+    PcmFloat,
+    Adpcm,
+};
+
+enum class SessionTypes {
+    AudioIn,
+    AudioOut,
+    FinalOutputRecorder,
+};
+
+enum class Channels : u32 {
+    FrontLeft,
+    FrontRight,
+    Center,
+    LFE,
+    BackLeft,
+    BackRight,
+};
+
+// These are used by Delay, Reverb and I3dl2Reverb prior to Revision 11.
+enum class OldChannels : u32 {
+    FrontLeft,
+    FrontRight,
+    BackLeft,
+    BackRight,
+    Center,
+    LFE,
+};
+
+constexpr u32 BufferCount = 32;
+
+constexpr u32 MaxRendererSessions = 2;
+constexpr u32 TargetSampleCount = 240;
+constexpr u32 TargetSampleRate = 48'000;
+constexpr u32 MaxChannels = 6;
+constexpr u32 MaxMixBuffers = 24;
+constexpr u32 MaxWaveBuffers = 4;
+constexpr s32 LowestVoicePriority = 0xFF;
+constexpr s32 HighestVoicePriority = 0;
+constexpr u32 BufferAlignment = 0x40;
+constexpr u32 WorkbufferAlignment = 0x1000;
+constexpr s32 FinalMixId = 0;
+constexpr s32 InvalidDistanceFromFinalMix = std::numeric_limits<s32>::min();
+constexpr s32 UnusedSplitterId = -1;
+constexpr s32 UnusedMixId = std::numeric_limits<s32>::max();
+constexpr u32 InvalidNodeId = 0xF0000000;
+constexpr s32 InvalidProcessOrder = -1;
+constexpr u32 MaxBiquadFilters = 2;
+constexpr u32 MaxEffects = 256;
+
+constexpr bool IsChannelCountValid(u16 channel_count) {
+    return channel_count <= 6 &&
+           (channel_count == 1 || channel_count == 2 || channel_count == 4 || channel_count == 6);
+}
+
+constexpr void UseOldChannelMapping(std::span<s16> inputs, std::span<s16> outputs) {
+    constexpr auto old_center{static_cast<u32>(OldChannels::Center)};
+    constexpr auto new_center{static_cast<u32>(Channels::Center)};
+    constexpr auto old_lfe{static_cast<u32>(OldChannels::LFE)};
+    constexpr auto new_lfe{static_cast<u32>(Channels::LFE)};
+
+    auto center{inputs[old_center]};
+    auto lfe{inputs[old_lfe]};
+    inputs[old_center] = inputs[new_center];
+    inputs[old_lfe] = inputs[new_lfe];
+    inputs[new_center] = center;
+    inputs[new_lfe] = lfe;
+
+    center = outputs[old_center];
+    lfe = outputs[old_lfe];
+    outputs[old_center] = outputs[new_center];
+    outputs[old_lfe] = outputs[new_lfe];
+    outputs[new_center] = center;
+    outputs[new_lfe] = lfe;
+}
+
+constexpr u32 GetSplitterInParamHeaderMagic() {
+    return Common::MakeMagic('S', 'N', 'D', 'H');
+}
+
+constexpr u32 GetSplitterInfoMagic() {
+    return Common::MakeMagic('S', 'N', 'D', 'I');
+}
+
+constexpr u32 GetSplitterSendDataMagic() {
+    return Common::MakeMagic('S', 'N', 'D', 'D');
+}
+
+constexpr size_t GetSampleFormatByteSize(SampleFormat format) {
+    switch (format) {
+    case SampleFormat::PcmInt8:
+        return 1;
+    case SampleFormat::PcmInt16:
+        return 2;
+    case SampleFormat::PcmInt24:
+        return 3;
+    case SampleFormat::PcmInt32:
+    case SampleFormat::PcmFloat:
+        return 4;
+    default:
+        return 2;
+    }
+}
+
+} // namespace AudioCore

src/audio_core/common/feature_support.h

@@ -0,0 +1,105 @@
+// SPDX-FileCopyrightText: Copyright 2022 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#include <map>
+#include <ranges>
+#include <tuple>
+
+#include "common/assert.h"
+#include "common/common_funcs.h"
+#include "common/common_types.h"
+
+namespace AudioCore {
+constexpr u32 CurrentRevision = 11;
+
+enum class SupportTags {
+    CommandProcessingTimeEstimatorVersion4,
+    CommandProcessingTimeEstimatorVersion3,
+    CommandProcessingTimeEstimatorVersion2,
+    MultiTapBiquadFilterProcessing,
+    EffectInfoVer2,
+    WaveBufferVer2,
+    BiquadFilterFloatProcessing,
+    VolumeMixParameterPrecisionQ23,
+    MixInParameterDirtyOnlyUpdate,
+    BiquadFilterEffectStateClearBugFix,
+    VoicePlayedSampleCountResetAtLoopPoint,
+    VoicePitchAndSrcSkipped,
+    SplitterBugFix,
+    FlushVoiceWaveBuffers,
+    ElapsedFrameCount,
+    AudioRendererVariadicCommandBufferSize,
+    PerformanceMetricsDataFormatVersion2,
+    AudioRendererProcessingTimeLimit80Percent,
+    AudioRendererProcessingTimeLimit75Percent,
+    AudioRendererProcessingTimeLimit70Percent,
+    AdpcmLoopContextBugFix,
+    Splitter,
+    LongSizePreDelay,
+    AudioUsbDeviceOutput,
+    DeviceApiVersion2,
+    DelayChannelMappingChange,
+    ReverbChannelMappingChange,
+    I3dl2ReverbChannelMappingChange,
+
+    // Not a real tag, just here to get the count.
+    Size
+};
+
+constexpr u32 GetRevisionNum(u32 user_revision) {
+    if (user_revision >= 0x100) {
+        user_revision -= Common::MakeMagic('R', 'E', 'V', '0');
+        user_revision >>= 24;
+    }
+    return user_revision;
+};
+
+constexpr bool CheckFeatureSupported(SupportTags tag, u32 user_revision) {
+    constexpr std::array<std::pair<SupportTags, u32>, static_cast<u32>(SupportTags::Size)> features{
+        {
+            {SupportTags::AudioRendererProcessingTimeLimit70Percent, 1},
+            {SupportTags::Splitter, 2},
+            {SupportTags::AdpcmLoopContextBugFix, 2},
+            {SupportTags::LongSizePreDelay, 3},
+            {SupportTags::AudioUsbDeviceOutput, 4},
+            {SupportTags::AudioRendererProcessingTimeLimit75Percent, 4},
+            {SupportTags::VoicePlayedSampleCountResetAtLoopPoint, 5},
+            {SupportTags::VoicePitchAndSrcSkipped, 5},
+            {SupportTags::SplitterBugFix, 5},
+            {SupportTags::FlushVoiceWaveBuffers, 5},
+            {SupportTags::ElapsedFrameCount, 5},
+            {SupportTags::AudioRendererProcessingTimeLimit80Percent, 5},
+            {SupportTags::AudioRendererVariadicCommandBufferSize, 5},
+            {SupportTags::PerformanceMetricsDataFormatVersion2, 5},
+            {SupportTags::CommandProcessingTimeEstimatorVersion2, 5},
+            {SupportTags::BiquadFilterEffectStateClearBugFix, 6},
+            {SupportTags::BiquadFilterFloatProcessing, 7},
+            {SupportTags::VolumeMixParameterPrecisionQ23, 7},
+            {SupportTags::MixInParameterDirtyOnlyUpdate, 7},
+            {SupportTags::WaveBufferVer2, 8},
+            {SupportTags::CommandProcessingTimeEstimatorVersion3, 8},
+            {SupportTags::EffectInfoVer2, 9},
+            {SupportTags::CommandProcessingTimeEstimatorVersion4, 10},
+            {SupportTags::MultiTapBiquadFilterProcessing, 10},
+            {SupportTags::DelayChannelMappingChange, 11},
+            {SupportTags::ReverbChannelMappingChange, 11},
+            {SupportTags::I3dl2ReverbChannelMappingChange, 11},
+        }};
+
+    const auto& feature =
+        std::ranges::find_if(features, [tag](const auto& entry) { return entry.first == tag; });
+    if (feature == features.cend()) {
+        LOG_ERROR(Service_Audio, "Invalid SupportTag {}!", static_cast<u32>(tag));
+        return false;
+    }
+    user_revision = GetRevisionNum(user_revision);
+    return (*feature).second <= user_revision;
+}
+
+constexpr bool CheckValidRevision(u32 user_revision) {
+    return GetRevisionNum(user_revision) <= CurrentRevision;
+};
+
+} // namespace AudioCore

src/audio_core/common/wave_buffer.h

@@ -0,0 +1,35 @@
+// SPDX-FileCopyrightText: Copyright 2022 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#include "common/common_types.h"
+
+namespace AudioCore {
+
+struct WaveBufferVersion1 {
+    CpuAddr buffer;
+    u64 buffer_size;
+    u32 start_offset;
+    u32 end_offset;
+    bool loop;
+    bool stream_ended;
+    CpuAddr context;
+    u64 context_size;
+};
+
+struct WaveBufferVersion2 {
+    CpuAddr buffer;
+    CpuAddr context;
+    u64 buffer_size;
+    u64 context_size;
+    u32 start_offset;
+    u32 end_offset;
+    u32 loop_start_offset;
+    u32 loop_end_offset;
+    s32 loop_count;
+    bool loop;
+    bool stream_ended;
+};
+
+} // namespace AudioCore

src/audio_core/common/workbuffer_allocator.h

@@ -0,0 +1,100 @@
+// SPDX-FileCopyrightText: Copyright 2022 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#include <span>
+
+#include "common/alignment.h"
+#include "common/assert.h"
+#include "common/common_types.h"
+
+namespace AudioCore {
+/**
+ * Responsible for allocating up a workbuffer into multiple pieces.
+ * Takes in a buffer and size (it does not own them), and allocates up the buffer via Allocate.
+ */
+class WorkbufferAllocator {
+public:
+    explicit WorkbufferAllocator(std::span<u8> buffer_, u64 size_)
+        : buffer{reinterpret_cast<u64>(buffer_.data())}, size{size_} {}
+
+    /**
+     * Allocate the given count of T elements, aligned to alignment.
+     *
+     * @param count     - The number of elements to allocate.
+     * @param alignment - The required starting alignment.
+     * @return Non-owning container of allocated elements.
+     */
+    template <typename T>
+    std::span<T> Allocate(u64 count, u64 alignment) {
+        u64 out{0};
+        u64 byte_size{count * sizeof(T)};
+
+        if (byte_size > 0) {
+            auto current{buffer + offset};
+            auto aligned_buffer{Common::AlignUp(current, alignment)};
+            if (aligned_buffer + byte_size <= buffer + size) {
+                out = aligned_buffer;
+                offset = byte_size - buffer + aligned_buffer;
+            } else {
+                LOG_ERROR(
+                    Service_Audio,
+                    "Allocated buffer was too small to hold new alloc.\nAllocator size={:08X}, "
+                    "offset={:08X}.\nAttempting to allocate {:08X} with alignment={:02X}",
+                    size, offset, byte_size, alignment);
+                count = 0;
+            }
+        }
+
+        return std::span<T>(reinterpret_cast<T*>(out), count);
+    }
+
+    /**
+     * Align the current offset to the given alignment.
+     *
+     * @param alignment - The required starting alignment.
+     */
+    void Align(u64 alignment) {
+        auto current{buffer + offset};
+        auto aligned_buffer{Common::AlignUp(current, alignment)};
+        offset = 0 - buffer + aligned_buffer;
+    }
+
+    /**
+     * Get the current buffer offset.
+     *
+     * @return The current allocating offset.
+     */
+    u64 GetCurrentOffset() const {
+        return offset;
+    }
+
+    /**
+     * Get the current buffer size.
+     *
+     * @return The size of the current buffer.
+     */
+    u64 GetSize() const {
+        return size;
+    }
+
+    /**
+     * Get the remaining size that can be allocated.
+     *
+     * @return The remaining size left in the buffer.
+     */
+    u64 GetRemainingSize() const {
+        return size - offset;
+    }
+
+private:
+    /// The buffer into which we are allocating.
+    u64 buffer;
+    /// Size of the buffer we're allocating to.
+    u64 size;
+    /// Current offset into the buffer, an error will be thrown if it exceeds size.
+    u64 offset{};
+};
+
+} // namespace AudioCore

src/audio_core/cubeb_sink.cpp

@@ -1,249 +0,0 @@
-// SPDX-FileCopyrightText: Copyright 2018 yuzu Emulator Project
-// SPDX-License-Identifier: GPL-2.0-or-later
-
-#include <algorithm>
-#include <atomic>
-#include <cstring>
-#include "audio_core/cubeb_sink.h"
-#include "audio_core/stream.h"
-#include "common/assert.h"
-#include "common/logging/log.h"
-#include "common/ring_buffer.h"
-#include "common/settings.h"
-
-#ifdef _WIN32
-#include <objbase.h>
-#endif
-
-namespace AudioCore {
-
-class CubebSinkStream final : public SinkStream {
-public:
-    CubebSinkStream(cubeb* ctx_, u32 sample_rate, u32 num_channels_, cubeb_devid output_device,
-                    const std::string& name)
-        : ctx{ctx_}, num_channels{std::min(num_channels_, 6u)} {
-
-        cubeb_stream_params params{};
-        params.rate = sample_rate;
-        params.channels = num_channels;
-        params.format = CUBEB_SAMPLE_S16NE;
-        params.prefs = CUBEB_STREAM_PREF_PERSIST;
-        switch (num_channels) {
-        case 1:
-            params.layout = CUBEB_LAYOUT_MONO;
-            break;
-        case 2:
-            params.layout = CUBEB_LAYOUT_STEREO;
-            break;
-        case 6:
-            params.layout = CUBEB_LAYOUT_3F2_LFE;
-            break;
-        }
-
-        u32 minimum_latency{};
-        if (cubeb_get_min_latency(ctx, &params, &minimum_latency) != CUBEB_OK) {
-            LOG_CRITICAL(Audio_Sink, "Error getting minimum latency");
-        }
-
-        if (cubeb_stream_init(ctx, &stream_backend, name.c_str(), nullptr, nullptr, output_device,
-                              &params, std::max(512u, minimum_latency),
-                              &CubebSinkStream::DataCallback, &CubebSinkStream::StateCallback,
-                              this) != CUBEB_OK) {
-            LOG_CRITICAL(Audio_Sink, "Error initializing cubeb stream");
-            return;
-        }
-
-        if (cubeb_stream_start(stream_backend) != CUBEB_OK) {
-            LOG_CRITICAL(Audio_Sink, "Error starting cubeb stream");
-            return;
-        }
-    }
-
-    ~CubebSinkStream() override {
-        if (!ctx) {
-            return;
-        }
-
-        if (cubeb_stream_stop(stream_backend) != CUBEB_OK) {
-            LOG_CRITICAL(Audio_Sink, "Error stopping cubeb stream");
-        }
-
-        cubeb_stream_destroy(stream_backend);
-    }
-
-    void EnqueueSamples(u32 source_num_channels, const std::vector<s16>& samples) override {
-        if (source_num_channels > num_channels) {
-            // Downsample 6 channels to 2
-            ASSERT_MSG(source_num_channels == 6, "Channel count must be 6");
-
-            std::vector<s16> buf;
-            buf.reserve(samples.size() * num_channels / source_num_channels);
-            for (std::size_t i = 0; i < samples.size(); i += source_num_channels) {
-                // Downmixing implementation taken from the ATSC standard
-                const s16 left{samples[i + 0]};
-                const s16 right{samples[i + 1]};
-                const s16 center{samples[i + 2]};
-                const s16 surround_left{samples[i + 4]};
-                const s16 surround_right{samples[i + 5]};
-                // Not used in the ATSC reference implementation
-                [[maybe_unused]] const s16 low_frequency_effects{samples[i + 3]};
-
-                constexpr s32 clev{707}; // center mixing level coefficient
-                constexpr s32 slev{707}; // surround mixing level coefficient
-
-                buf.push_back(static_cast<s16>(left + (clev * center / 1000) +
-                                               (slev * surround_left / 1000)));
-                buf.push_back(static_cast<s16>(right + (clev * center / 1000) +
-                                               (slev * surround_right / 1000)));
-            }
-            queue.Push(buf);
-            return;
-        }
-
-        queue.Push(samples);
-    }
-
-    std::size_t SamplesInQueue(u32 channel_count) const override {
-        if (!ctx)
-            return 0;
-
-        return queue.Size() / channel_count;
-    }
-
-    void Flush() override {
-        should_flush = true;
-    }
-
-    u32 GetNumChannels() const {
-        return num_channels;
-    }
-
-private:
-    std::vector<std::string> device_list;
-
-    cubeb* ctx{};
-    cubeb_stream* stream_backend{};
-    u32 num_channels{};
-
-    Common::RingBuffer<s16, 0x10000> queue;
-    std::array<s16, 2> last_frame{};
-    std::atomic<bool> should_flush{};
-
-    static long DataCallback(cubeb_stream* stream, void* user_data, const void* input_buffer,
-                             void* output_buffer, long num_frames);
-    static void StateCallback(cubeb_stream* stream, void* user_data, cubeb_state state);
-};
-
-CubebSink::CubebSink(std::string_view target_device_name) {
-    // Cubeb requires COM to be initialized on the thread calling cubeb_init on Windows
-#ifdef _WIN32
-    com_init_result = CoInitializeEx(nullptr, COINIT_MULTITHREADED);
-#endif
-
-    if (cubeb_init(&ctx, "yuzu", nullptr) != CUBEB_OK) {
-        LOG_CRITICAL(Audio_Sink, "cubeb_init failed");
-        return;
-    }
-
-    if (target_device_name != auto_device_name && !target_device_name.empty()) {
-        cubeb_device_collection collection;
-        if (cubeb_enumerate_devices(ctx, CUBEB_DEVICE_TYPE_OUTPUT, &collection) != CUBEB_OK) {
-            LOG_WARNING(Audio_Sink, "Audio output device enumeration not supported");
-        } else {
-            const auto collection_end{collection.device + collection.count};
-            const auto device{
-                std::find_if(collection.device, collection_end, [&](const cubeb_device_info& info) {
-                    return info.friendly_name != nullptr &&
-                           target_device_name == info.friendly_name;
-                })};
-            if (device != collection_end) {
-                output_device = device->devid;
-            }
-            cubeb_device_collection_destroy(ctx, &collection);
-        }
-    }
-}
-
-CubebSink::~CubebSink() {
-    if (!ctx) {
-        return;
-    }
-
-    for (auto& sink_stream : sink_streams) {
-        sink_stream.reset();
-    }
-
-    cubeb_destroy(ctx);
-
-#ifdef _WIN32
-    if (SUCCEEDED(com_init_result)) {
-        CoUninitialize();
-    }
-#endif
-}
-
-SinkStream& CubebSink::AcquireSinkStream(u32 sample_rate, u32 num_channels,
-                                         const std::string& name) {
-    sink_streams.push_back(
-        std::make_unique<CubebSinkStream>(ctx, sample_rate, num_channels, output_device, name));
-    return *sink_streams.back();
-}
-
-long CubebSinkStream::DataCallback([[maybe_unused]] cubeb_stream* stream, void* user_data,
-                                   [[maybe_unused]] const void* input_buffer, void* output_buffer,
-                                   long num_frames) {
-    auto* impl = static_cast<CubebSinkStream*>(user_data);
-    auto* buffer = static_cast<u8*>(output_buffer);
-
-    if (!impl) {
-        return {};
-    }
-
-    const std::size_t num_channels = impl->GetNumChannels();
-    const std::size_t samples_to_write = num_channels * num_frames;
-    const std::size_t samples_written = impl->queue.Pop(buffer, samples_to_write);
-
-    if (samples_written >= num_channels) {
-        std::memcpy(&impl->last_frame[0], buffer + (samples_written - num_channels) * sizeof(s16),
-                    num_channels * sizeof(s16));
-    }
-
-    // Fill the rest of the frames with last_frame
-    for (std::size_t i = samples_written; i < samples_to_write; i += num_channels) {
-        std::memcpy(buffer + i * sizeof(s16), &impl->last_frame[0], num_channels * sizeof(s16));
-    }
-
-    return num_frames;
-}
-
-void CubebSinkStream::StateCallback([[maybe_unused]] cubeb_stream* stream,
-                                    [[maybe_unused]] void* user_data,
-                                    [[maybe_unused]] cubeb_state state) {}
-
-std::vector<std::string> ListCubebSinkDevices() {
-    std::vector<std::string> device_list;
-    cubeb* ctx;
-
-    if (cubeb_init(&ctx, "yuzu Device Enumerator", nullptr) != CUBEB_OK) {
-        LOG_CRITICAL(Audio_Sink, "cubeb_init failed");
-        return {};
-    }
-
-    cubeb_device_collection collection;
-    if (cubeb_enumerate_devices(ctx, CUBEB_DEVICE_TYPE_OUTPUT, &collection) != CUBEB_OK) {
-        LOG_WARNING(Audio_Sink, "Audio output device enumeration not supported");
-    } else {
-        for (std::size_t i = 0; i < collection.count; i++) {
-            const cubeb_device_info& device = collection.device[i];
-            if (device.friendly_name) {
-                device_list.emplace_back(device.friendly_name);
-            }
-        }
-        cubeb_device_collection_destroy(ctx, &collection);
-    }
-
-    cubeb_destroy(ctx);
-    return device_list;
-}
-
-} // namespace AudioCore

src/audio_core/cubeb_sink.h

@@ -1,35 +0,0 @@
-// SPDX-FileCopyrightText: Copyright 2018 yuzu Emulator Project
-// SPDX-License-Identifier: GPL-2.0-or-later
-
-#pragma once
-
-#include <string>
-#include <vector>
-
-#include <cubeb/cubeb.h>
-
-#include "audio_core/sink.h"
-
-namespace AudioCore {
-
-class CubebSink final : public Sink {
-public:
-    explicit CubebSink(std::string_view device_id);
-    ~CubebSink() override;
-
-    SinkStream& AcquireSinkStream(u32 sample_rate, u32 num_channels,
-                                  const std::string& name) override;
-
-private:
-    cubeb* ctx{};
-    cubeb_devid output_device{};
-    std::vector<SinkStreamPtr> sink_streams;
-
-#ifdef _WIN32
-    u32 com_init_result = 0;
-#endif
-};
-
-std::vector<std::string> ListCubebSinkDevices();
-
-} // namespace AudioCore

src/audio_core/delay_line.cpp

@@ -1,107 +0,0 @@
-// SPDX-FileCopyrightText: Copyright 2021 yuzu Emulator Project
-// SPDX-License-Identifier: GPL-2.0-or-later
-
-#include <cstring>
-#include "audio_core/delay_line.h"
-
-namespace AudioCore {
-DelayLineBase::DelayLineBase() = default;
-DelayLineBase::~DelayLineBase() = default;
-
-void DelayLineBase::Initialize(s32 max_delay_, float* src_buffer) {
-    buffer = src_buffer;
-    buffer_end = buffer + max_delay_;
-    max_delay = max_delay_;
-    output = buffer;
-    SetDelay(max_delay_);
-    Clear();
-}
-
-void DelayLineBase::SetDelay(s32 new_delay) {
-    if (max_delay < new_delay) {
-        return;
-    }
-    delay = new_delay;
-    input = (buffer + ((output - buffer) + new_delay) % (max_delay + 1));
-}
-
-s32 DelayLineBase::GetDelay() const {
-    return delay;
-}
-
-s32 DelayLineBase::GetMaxDelay() const {
-    return max_delay;
-}
-
-f32 DelayLineBase::TapOut(s32 last_sample) {
-    const float* ptr = input - (last_sample + 1);
-    if (ptr < buffer) {
-        ptr += (max_delay + 1);
-    }
-
-    return *ptr;
-}
-
-f32 DelayLineBase::Tick(f32 sample) {
-    *(input++) = sample;
-    const auto out_sample = *(output++);
-
-    if (buffer_end < input) {
-        input = buffer;
-    }
-
-    if (buffer_end < output) {
-        output = buffer;
-    }
-
-    return out_sample;
-}
-
-float* DelayLineBase::GetInput() {
-    return input;
-}
-
-const float* DelayLineBase::GetInput() const {
-    return input;
-}
-
-f32 DelayLineBase::GetOutputSample() const {
-    return *output;
-}
-
-void DelayLineBase::Clear() {
-    std::memset(buffer, 0, sizeof(float) * max_delay);
-}
-
-void DelayLineBase::Reset() {
-    buffer = nullptr;
-    buffer_end = nullptr;
-    max_delay = 0;
-    input = nullptr;
-    output = nullptr;
-    delay = 0;
-}
-
-DelayLineAllPass::DelayLineAllPass() = default;
-DelayLineAllPass::~DelayLineAllPass() = default;
-
-void DelayLineAllPass::Initialize(u32 delay_, float coeffcient_, f32* src_buffer) {
-    DelayLineBase::Initialize(delay_, src_buffer);
-    SetCoefficient(coeffcient_);
-}
-
-void DelayLineAllPass::SetCoefficient(float coeffcient_) {
-    coefficient = coeffcient_;
-}
-
-f32 DelayLineAllPass::Tick(f32 sample) {
-    const auto temp = sample - coefficient * *output;
-    return coefficient * temp + DelayLineBase::Tick(temp);
-}
-
-void DelayLineAllPass::Reset() {
-    coefficient = 0.0f;
-    DelayLineBase::Reset();
-}
-
-} // namespace AudioCore

src/audio_core/delay_line.h

@@ -1,49 +0,0 @@
-// SPDX-FileCopyrightText: Copyright 2021 yuzu Emulator Project
-// SPDX-License-Identifier: GPL-2.0-or-later
-
-#pragma once
-
-#include "common/common_types.h"
-
-namespace AudioCore {
-
-class DelayLineBase {
-public:
-    DelayLineBase();
-    ~DelayLineBase();
-
-    void Initialize(s32 max_delay_, float* src_buffer);
-    void SetDelay(s32 new_delay);
-    s32 GetDelay() const;
-    s32 GetMaxDelay() const;
-    f32 TapOut(s32 last_sample);
-    f32 Tick(f32 sample);
-    float* GetInput();
-    const float* GetInput() const;
-    f32 GetOutputSample() const;
-    void Clear();
-    void Reset();
-
-protected:
-    float* buffer{nullptr};
-    float* buffer_end{nullptr};
-    s32 max_delay{};
-    float* input{nullptr};
-    float* output{nullptr};
-    s32 delay{};
-};
-
-class DelayLineAllPass final : public DelayLineBase {
-public:
-    DelayLineAllPass();
-    ~DelayLineAllPass();
-
-    void Initialize(u32 delay, float coeffcient_, f32* src_buffer);
-    void SetCoefficient(float coeffcient_);
-    f32 Tick(f32 sample);
-    void Reset();
-
-private:
-    float coefficient{};
-};
-} // namespace AudioCore

src/audio_core/device/audio_buffer.h

@@ -0,0 +1,21 @@
+// SPDX-FileCopyrightText: Copyright 2022 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#include "common/common_types.h"
+
+namespace AudioCore {
+
+struct AudioBuffer {
+    /// Timestamp this buffer completed playing.
+    s64 played_timestamp;
+    /// Game memory address for these samples.
+    VAddr samples;
+    /// Unqiue identifier for this buffer.
+    u64 tag;
+    /// Size of the samples buffer.
+    u64 size;
+};
+
+} // namespace AudioCore

src/audio_core/device/audio_buffers.h

@@ -0,0 +1,304 @@
+// SPDX-FileCopyrightText: Copyright 2022 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#include <array>
+#include <mutex>
+#include <span>
+#include <vector>
+
+#include "audio_buffer.h"
+#include "audio_core/device/device_session.h"
+#include "core/core_timing.h"
+
+namespace AudioCore {
+
+constexpr s32 BufferAppendLimit = 4;
+
+/**
+ * A ringbuffer of N audio buffers.
+ * The buffer contains 3 sections:
+ *     Appended   - Buffers added to the ring, but have yet to be sent to the audio backend.
+ *     Registered - Buffers sent to the backend and queued for playback.
+ *     Released   - Buffers which have been played, and can now be recycled.
+ * Any others are free/untracked.
+ *
+ * @tparam N - Maximum number of buffers in the ring.
+ */
+template <size_t N>
+class AudioBuffers {
+public:
+    explicit AudioBuffers(size_t limit) : append_limit{static_cast<u32>(limit)} {}
+
+    /**
+     * Append a new audio buffer to the ring.
+     *
+     * @param buffer - The new buffer.
+     */
+    void AppendBuffer(AudioBuffer& buffer) {
+        std::scoped_lock l{lock};
+        buffers[appended_index] = buffer;
+        appended_count++;
+        appended_index = (appended_index + 1) % append_limit;
+    }
+
+    /**
+     * Register waiting buffers, up to a maximum of BufferAppendLimit.
+     *
+     * @param out_buffers - The buffers which were registered.
+     */
+    void RegisterBuffers(std::vector<AudioBuffer>& out_buffers) {
+        std::scoped_lock l{lock};
+        const s32 to_register{std::min(std::min(appended_count, BufferAppendLimit),
+                                       BufferAppendLimit - registered_count)};
+
+        for (s32 i = 0; i < to_register; i++) {
+            s32 index{appended_index - appended_count};
+            if (index < 0) {
+                index += N;
+            }
+            out_buffers.push_back(buffers[index]);
+            registered_count++;
+            registered_index = (registered_index + 1) % append_limit;
+
+            appended_count--;
+            if (appended_count == 0) {
+                break;
+            }
+        }
+    }
+
+    /**
+     * Release a single buffer. Must be already registered.
+     *
+     * @param index     - The buffer index to release.
+     * @param timestamp - The released timestamp for this buffer.
+     */
+    void ReleaseBuffer(s32 index, s64 timestamp) {
+        std::scoped_lock l{lock};
+        buffers[index].played_timestamp = timestamp;
+
+        registered_count--;
+        released_count++;
+        released_index = (released_index + 1) % append_limit;
+    }
+
+    /**
+     * Release all registered buffers.
+     *
+     * @param timestamp - The released timestamp for this buffer.
+     * @return Is the buffer was released.
+     */
+    bool ReleaseBuffers(Core::Timing::CoreTiming& core_timing, DeviceSession& session) {
+        std::scoped_lock l{lock};
+        bool buffer_released{false};
+        while (registered_count > 0) {
+            auto index{registered_index - registered_count};
+            if (index < 0) {
+                index += N;
+            }
+
+            // Check with the backend if this buffer can be released yet.
+            if (!session.IsBufferConsumed(buffers[index].tag)) {
+                break;
+            }
+
+            ReleaseBuffer(index, core_timing.GetGlobalTimeNs().count());
+            buffer_released = true;
+        }
+
+        return buffer_released || registered_count == 0;
+    }
+
+    /**
+     * Get all released buffers.
+     *
+     * @param tags - Container to be filled with the released buffers' tags.
+     * @return The number of buffers released.
+     */
+    u32 GetReleasedBuffers(std::span<u64> tags) {
+        std::scoped_lock l{lock};
+        u32 released{0};
+
+        while (released_count > 0) {
+            auto index{released_index - released_count};
+            if (index < 0) {
+                index += N;
+            }
+
+            auto& buffer{buffers[index]};
+            released_count--;
+
+            auto tag{buffer.tag};
+            buffer.played_timestamp = 0;
+            buffer.samples = 0;
+            buffer.tag = 0;
+            buffer.size = 0;
+
+            if (tag == 0) {
+                break;
+            }
+
+            tags[released++] = tag;
+
+            if (released >= tags.size()) {
+                break;
+            }
+        }
+
+        return released;
+    }
+
+    /**
+     * Get all appended and registered buffers.
+     *
+     * @param buffers_flushed - Output vector for the buffers which are released.
+     * @param max_buffers     - Maximum number of buffers to released.
+     * @return The number of buffers released.
+     */
+    u32 GetRegisteredAppendedBuffers(std::vector<AudioBuffer>& buffers_flushed, u32 max_buffers) {
+        std::scoped_lock l{lock};
+        if (registered_count + appended_count == 0) {
+            return 0;
+        }
+
+        size_t buffers_to_flush{
+            std::min(static_cast<u32>(registered_count + appended_count), max_buffers)};
+        if (buffers_to_flush == 0) {
+            return 0;
+        }
+
+        while (registered_count > 0) {
+            auto index{registered_index - registered_count};
+            if (index < 0) {
+                index += N;
+            }
+
+            buffers_flushed.push_back(buffers[index]);
+
+            registered_count--;
+            released_count++;
+            released_index = (released_index + 1) % append_limit;
+
+            if (buffers_flushed.size() >= buffers_to_flush) {
+                break;
+            }
+        }
+
+        while (appended_count > 0) {
+            auto index{appended_index - appended_count};
+            if (index < 0) {
+                index += N;
+            }
+
+            buffers_flushed.push_back(buffers[index]);
+
+            appended_count--;
+            released_count++;
+            released_index = (released_index + 1) % append_limit;
+
+            if (buffers_flushed.size() >= buffers_to_flush) {
+                break;
+            }
+        }
+
+        return static_cast<u32>(buffers_flushed.size());
+    }
+
+    /**
+     * Check if the given tag is in the buffers.
+     *
+     * @param tag - Unique tag of the buffer to search for.
+     * @return True if the buffer is still in the ring, otherwise false.
+     */
+    bool ContainsBuffer(const u64 tag) const {
+        std::scoped_lock l{lock};
+        const auto registered_buffers{appended_count + registered_count + released_count};
+
+        if (registered_buffers == 0) {
+            return false;
+        }
+
+        auto index{released_index - released_count};
+        if (index < 0) {
+            index += append_limit;
+        }
+
+        for (s32 i = 0; i < registered_buffers; i++) {
+            if (buffers[index].tag == tag) {
+                return true;
+            }
+            index = (index + 1) % append_limit;
+        }
+
+        return false;
+    }
+
+    /**
+     * Get the number of active buffers in the ring.
+     * That is, appended, registered and released buffers.
+     *
+     * @return Number of active buffers.
+     */
+    u32 GetAppendedRegisteredCount() const {
+        std::scoped_lock l{lock};
+        return appended_count + registered_count;
+    }
+
+    /**
+     * Get the total number of active buffers in the ring.
+     * That is, appended, registered and released buffers.
+     *
+     * @return Number of active buffers.
+     */
+    u32 GetTotalBufferCount() const {
+        std::scoped_lock l{lock};
+        return static_cast<u32>(appended_count + registered_count + released_count);
+    }
+
+    /**
+     * Flush all of the currently appended and registered buffers
+     *
+     * @param buffers_released - Output count for the number of buffers released.
+     * @return True if buffers were successfully flushed, otherwise false.
+     */
+    bool FlushBuffers(u32& buffers_released) {
+        std::scoped_lock l{lock};
+        std::vector<AudioBuffer> buffers_flushed{};
+
+        buffers_released = GetRegisteredAppendedBuffers(buffers_flushed, append_limit);
+
+        if (registered_count > 0) {
+            return false;
+        }
+
+        if (static_cast<u32>(released_count + appended_count) > append_limit) {
+            return false;
+        }
+
+        return true;
+    }
+
+private:
+    /// Buffer lock
+    mutable std::recursive_mutex lock{};
+    /// The audio buffers
+    std::array<AudioBuffer, N> buffers{};
+    /// Current released index
+    s32 released_index{};
+    /// Number of released buffers
+    s32 released_count{};
+    /// Current registered index
+    s32 registered_index{};
+    /// Number of registered buffers
+    s32 registered_count{};
+    /// Current appended index
+    s32 appended_index{};
+    /// Number of appended buffers
+    s32 appended_count{};
+    /// Maximum number of buffers (default 32)
+    u32 append_limit{};
+};
+
+} // namespace AudioCore

src/audio_core/device/device_session.cpp

@@ -0,0 +1,114 @@
+// SPDX-FileCopyrightText: Copyright 2022 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include "audio_core/audio_core.h"
+#include "audio_core/audio_manager.h"
+#include "audio_core/device/audio_buffer.h"
+#include "audio_core/device/device_session.h"
+#include "audio_core/sink/sink_stream.h"
+#include "core/core.h"
+#include "core/memory.h"
+
+namespace AudioCore {
+
+DeviceSession::DeviceSession(Core::System& system_) : system{system_} {}
+
+DeviceSession::~DeviceSession() {
+    Finalize();
+}
+
+Result DeviceSession::Initialize(std::string_view name_, SampleFormat sample_format_,
+                                 u16 channel_count_, size_t session_id_, u32 handle_,
+                                 u64 applet_resource_user_id_, Sink::StreamType type_) {
+    if (stream) {
+        Finalize();
+    }
+    name = fmt::format("{}-{}", name_, session_id_);
+    type = type_;
+    sample_format = sample_format_;
+    channel_count = channel_count_;
+    session_id = session_id_;
+    handle = handle_;
+    applet_resource_user_id = applet_resource_user_id_;
+
+    if (type == Sink::StreamType::In) {
+        sink = &system.AudioCore().GetInputSink();
+    } else {
+        sink = &system.AudioCore().GetOutputSink();
+    }
+    stream = sink->AcquireSinkStream(system, channel_count, name, type);
+    initialized = true;
+    return ResultSuccess;
+}
+
+void DeviceSession::Finalize() {
+    if (initialized) {
+        Stop();
+        sink->CloseStream(stream);
+        stream = nullptr;
+    }
+}
+
+void DeviceSession::Start() {
+    stream->SetPlayedSampleCount(played_sample_count);
+    stream->Start();
+}
+
+void DeviceSession::Stop() {
+    if (stream) {
+        played_sample_count = stream->GetPlayedSampleCount();
+        stream->Stop();
+    }
+}
+
+void DeviceSession::AppendBuffers(std::span<AudioBuffer> buffers) const {
+    auto& memory{system.Memory()};
+
+    for (size_t i = 0; i < buffers.size(); i++) {
+        Sink::SinkBuffer new_buffer{
+            .frames = buffers[i].size / (channel_count * sizeof(s16)),
+            .frames_played = 0,
+            .tag = buffers[i].tag,
+            .consumed = false,
+        };
+
+        if (type == Sink::StreamType::In) {
+            std::vector<s16> samples{};
+            stream->AppendBuffer(new_buffer, samples);
+        } else {
+            std::vector<s16> samples(buffers[i].size / sizeof(s16));
+            memory.ReadBlockUnsafe(buffers[i].samples, samples.data(), buffers[i].size);
+            stream->AppendBuffer(new_buffer, samples);
+        }
+    }
+}
+
+void DeviceSession::ReleaseBuffer(AudioBuffer& buffer) const {
+    if (type == Sink::StreamType::In) {
+        auto& memory{system.Memory()};
+        auto samples{stream->ReleaseBuffer(buffer.size / sizeof(s16))};
+        memory.WriteBlockUnsafe(buffer.samples, samples.data(), buffer.size);
+    }
+}
+
+bool DeviceSession::IsBufferConsumed(u64 tag) const {
+    if (stream) {
+        return stream->IsBufferConsumed(tag);
+    }
+    return true;
+}
+
+void DeviceSession::SetVolume(f32 volume) const {
+    if (stream) {
+        stream->SetSystemVolume(volume);
+    }
+}
+
+u64 DeviceSession::GetPlayedSampleCount() const {
+    if (stream) {
+        return stream->GetPlayedSampleCount();
+    }
+    return 0;
+}
+
+} // namespace AudioCore

src/audio_core/device/device_session.h

@@ -0,0 +1,126 @@
+// SPDX-FileCopyrightText: Copyright 2022 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#include <span>
+
+#include "audio_core/common/common.h"
+#include "audio_core/sink/sink.h"
+#include "core/hle/service/audio/errors.h"
+
+namespace Core {
+class System;
+}
+
+namespace AudioCore {
+namespace Sink {
+class SinkStream;
+struct SinkBuffer;
+} // namespace Sink
+
+struct AudioBuffer;
+
+/**
+ * Represents an input or output device stream for audio in and audio out (not used for render).
+ **/
+class DeviceSession {
+public:
+    explicit DeviceSession(Core::System& system);
+    ~DeviceSession();
+
+    /**
+     * Initialize this device session.
+     *
+     * @param name                    - Name of this device.
+     * @param sample_format           - Sample format for this device's output.
+     * @param channel_count           - Number of channels for this device (2 or 6).
+     * @param session_id              - This session's id.
+     * @param handle                  - Handle for this device session (unused).
+     * @param applet_resource_user_id - Applet resource user id for this device session (unused).
+     * @param type                    - Type of this stream (Render, In, Out).
+     * @return Result code for this call.
+     */
+    Result Initialize(std::string_view name, SampleFormat sample_format, u16 channel_count,
+                      size_t session_id, u32 handle, u64 applet_resource_user_id,
+                      Sink::StreamType type);
+
+    /**
+     * Finalize this device session.
+     */
+    void Finalize();
+
+    /**
+     * Append audio buffers to this device session to be played back.
+     *
+     * @param buffers - The buffers to play.
+     */
+    void AppendBuffers(std::span<AudioBuffer> buffers) const;
+
+    /**
+     * (Audio In only) Pop samples from the backend, and write them back to this buffer's address.
+     *
+     * @param buffer - The buffer to write to.
+     */
+    void ReleaseBuffer(AudioBuffer& buffer) const;
+
+    /**
+     * Check if the buffer for the given tag has been consumed by the backend.
+     *
+     * @param tag - Unqiue tag of the buffer to check.
+     * @return true if the buffer has been consumed, otherwise false.
+     */
+    bool IsBufferConsumed(u64 tag) const;
+
+    /**
+     * Start this device session, starting the backend stream.
+     */
+    void Start();
+
+    /**
+     * Stop this device session, stopping the backend stream.
+     */
+    void Stop();
+
+    /**
+     * Set this device session's volume.
+     *
+     * @param volume - New volume for this session.
+     */
+    void SetVolume(f32 volume) const;
+
+    /**
+     * Get this device session's total played sample count.
+     *
+     * @return Samples played by this session.
+     */
+    u64 GetPlayedSampleCount() const;
+
+private:
+    /// System
+    Core::System& system;
+    /// Output sink this device will use
+    Sink::Sink* sink{};
+    /// The backend stream for this device session to send samples to
+    Sink::SinkStream* stream{};
+    /// Name of this device session
+    std::string name{};
+    /// Type of this device session (render/in/out)
+    Sink::StreamType type{};
+    /// Sample format for this device.
+    SampleFormat sample_format{SampleFormat::PcmInt16};
+    /// Channel count for this device session
+    u16 channel_count{};
+    /// Session id of this device session
+    size_t session_id{};
+    /// Handle of this device session
+    u32 handle{};
+    /// Applet resource user id of this device session
+    u64 applet_resource_user_id{};
+    /// Total number of samples played by this device session
+    u64 played_sample_count{};
+    /// Is this session initialised?
+    bool initialized{};
+};
+
+} // namespace AudioCore

src/audio_core/effect_context.cpp

@@ -1,320 +0,0 @@
-// SPDX-FileCopyrightText: Copyright 2020 yuzu Emulator Project
-// SPDX-License-Identifier: GPL-2.0-or-later
-
-#include <algorithm>
-#include "audio_core/effect_context.h"
-
-namespace AudioCore {
-namespace {
-bool ValidChannelCountForEffect(s32 channel_count) {
-    return channel_count == 1 || channel_count == 2 || channel_count == 4 || channel_count == 6;
-}
-} // namespace
-
-EffectContext::EffectContext(std::size_t effect_count_) : effect_count(effect_count_) {
-    effects.reserve(effect_count);
-    std::generate_n(std::back_inserter(effects), effect_count,
-                    [] { return std::make_unique<EffectStubbed>(); });
-}
-EffectContext::~EffectContext() = default;
-
-std::size_t EffectContext::GetCount() const {
-    return effect_count;
-}
-
-EffectBase* EffectContext::GetInfo(std::size_t i) {
-    return effects.at(i).get();
-}
-
-EffectBase* EffectContext::RetargetEffect(std::size_t i, EffectType effect) {
-    switch (effect) {
-    case EffectType::Invalid:
-        effects[i] = std::make_unique<EffectStubbed>();
-        break;
-    case EffectType::BufferMixer:
-        effects[i] = std::make_unique<EffectBufferMixer>();
-        break;
-    case EffectType::Aux:
-        effects[i] = std::make_unique<EffectAuxInfo>();
-        break;
-    case EffectType::Delay:
-        effects[i] = std::make_unique<EffectDelay>();
-        break;
-    case EffectType::Reverb:
-        effects[i] = std::make_unique<EffectReverb>();
-        break;
-    case EffectType::I3dl2Reverb:
-        effects[i] = std::make_unique<EffectI3dl2Reverb>();
-        break;
-    case EffectType::BiquadFilter:
-        effects[i] = std::make_unique<EffectBiquadFilter>();
-        break;
-    default:
-        ASSERT_MSG(false, "Unimplemented effect {}", effect);
-        effects[i] = std::make_unique<EffectStubbed>();
-    }
-    return GetInfo(i);
-}
-
-const EffectBase* EffectContext::GetInfo(std::size_t i) const {
-    return effects.at(i).get();
-}
-
-EffectStubbed::EffectStubbed() : EffectBase(EffectType::Invalid) {}
-EffectStubbed::~EffectStubbed() = default;
-
-void EffectStubbed::Update([[maybe_unused]] EffectInfo::InParams& in_params) {}
-void EffectStubbed::UpdateForCommandGeneration() {}
-
-EffectBase::EffectBase(EffectType effect_type_) : effect_type(effect_type_) {}
-EffectBase::~EffectBase() = default;
-
-UsageState EffectBase::GetUsage() const {
-    return usage;
-}
-
-EffectType EffectBase::GetType() const {
-    return effect_type;
-}
-
-bool EffectBase::IsEnabled() const {
-    return enabled;
-}
-
-s32 EffectBase::GetMixID() const {
-    return mix_id;
-}
-
-s32 EffectBase::GetProcessingOrder() const {
-    return processing_order;
-}
-
-std::vector<u8>& EffectBase::GetWorkBuffer() {
-    return work_buffer;
-}
-
-const std::vector<u8>& EffectBase::GetWorkBuffer() const {
-    return work_buffer;
-}
-
-EffectI3dl2Reverb::EffectI3dl2Reverb() : EffectGeneric(EffectType::I3dl2Reverb) {}
-EffectI3dl2Reverb::~EffectI3dl2Reverb() = default;
-
-void EffectI3dl2Reverb::Update(EffectInfo::InParams& in_params) {
-    auto& params = GetParams();
-    const auto* reverb_params = reinterpret_cast<I3dl2ReverbParams*>(in_params.raw.data());
-    if (!ValidChannelCountForEffect(reverb_params->max_channels)) {
-        ASSERT_MSG(false, "Invalid reverb max channel count {}", reverb_params->max_channels);
-        return;
-    }
-
-    const auto last_status = params.status;
-    mix_id = in_params.mix_id;
-    processing_order = in_params.processing_order;
-    params = *reverb_params;
-    if (!ValidChannelCountForEffect(reverb_params->channel_count)) {
-        params.channel_count = params.max_channels;
-    }
-    enabled = in_params.is_enabled;
-    if (last_status != ParameterStatus::Updated) {
-        params.status = last_status;
-    }
-
-    if (in_params.is_new || skipped) {
-        usage = UsageState::Initialized;
-        params.status = ParameterStatus::Initialized;
-        skipped = in_params.buffer_address == 0 || in_params.buffer_size == 0;
-        if (!skipped) {
-            auto& cur_work_buffer = GetWorkBuffer();
-            // Has two buffers internally
-            cur_work_buffer.resize(in_params.buffer_size * 2);
-            std::fill(cur_work_buffer.begin(), cur_work_buffer.end(), 0);
-        }
-    }
-}
-
-void EffectI3dl2Reverb::UpdateForCommandGeneration() {
-    if (enabled) {
-        usage = UsageState::Running;
-    } else {
-        usage = UsageState::Stopped;
-    }
-    GetParams().status = ParameterStatus::Updated;
-}
-
-I3dl2ReverbState& EffectI3dl2Reverb::GetState() {
-    return state;
-}
-
-const I3dl2ReverbState& EffectI3dl2Reverb::GetState() const {
-    return state;
-}
-
-EffectBiquadFilter::EffectBiquadFilter() : EffectGeneric(EffectType::BiquadFilter) {}
-EffectBiquadFilter::~EffectBiquadFilter() = default;
-
-void EffectBiquadFilter::Update(EffectInfo::InParams& in_params) {
-    auto& params = GetParams();
-    const auto* biquad_params = reinterpret_cast<BiquadFilterParams*>(in_params.raw.data());
-    mix_id = in_params.mix_id;
-    processing_order = in_params.processing_order;
-    params = *biquad_params;
-    enabled = in_params.is_enabled;
-}
-
-void EffectBiquadFilter::UpdateForCommandGeneration() {
-    if (enabled) {
-        usage = UsageState::Running;
-    } else {
-        usage = UsageState::Stopped;
-    }
-    GetParams().status = ParameterStatus::Updated;
-}
-
-EffectAuxInfo::EffectAuxInfo() : EffectGeneric(EffectType::Aux) {}
-EffectAuxInfo::~EffectAuxInfo() = default;
-
-void EffectAuxInfo::Update(EffectInfo::InParams& in_params) {
-    const auto* aux_params = reinterpret_cast<AuxInfo*>(in_params.raw.data());
-    mix_id = in_params.mix_id;
-    processing_order = in_params.processing_order;
-    GetParams() = *aux_params;
-    enabled = in_params.is_enabled;
-
-    if (in_params.is_new || skipped) {
-        skipped = aux_params->send_buffer_info == 0 || aux_params->return_buffer_info == 0;
-        if (skipped) {
-            return;
-        }
-
-        // There's two AuxInfos which are an identical size, the first one is managed by the cpu,
-        // the second is managed by the dsp. All we care about is managing the DSP one
-        send_info = aux_params->send_buffer_info + sizeof(AuxInfoDSP);
-        send_buffer = aux_params->send_buffer_info + (sizeof(AuxInfoDSP) * 2);
-
-        recv_info = aux_params->return_buffer_info + sizeof(AuxInfoDSP);
-        recv_buffer = aux_params->return_buffer_info + (sizeof(AuxInfoDSP) * 2);
-    }
-}
-
-void EffectAuxInfo::UpdateForCommandGeneration() {
-    if (enabled) {
-        usage = UsageState::Running;
-    } else {
-        usage = UsageState::Stopped;
-    }
-}
-
-VAddr EffectAuxInfo::GetSendInfo() const {
-    return send_info;
-}
-
-VAddr EffectAuxInfo::GetSendBuffer() const {
-    return send_buffer;
-}
-
-VAddr EffectAuxInfo::GetRecvInfo() const {
-    return recv_info;
-}
-
-VAddr EffectAuxInfo::GetRecvBuffer() const {
-    return recv_buffer;
-}
-
-EffectDelay::EffectDelay() : EffectGeneric(EffectType::Delay) {}
-EffectDelay::~EffectDelay() = default;
-
-void EffectDelay::Update(EffectInfo::InParams& in_params) {
-    const auto* delay_params = reinterpret_cast<DelayParams*>(in_params.raw.data());
-    auto& params = GetParams();
-    if (!ValidChannelCountForEffect(delay_params->max_channels)) {
-        return;
-    }
-
-    const auto last_status = params.status;
-    mix_id = in_params.mix_id;
-    processing_order = in_params.processing_order;
-    params = *delay_params;
-    if (!ValidChannelCountForEffect(delay_params->channels)) {
-        params.channels = params.max_channels;
-    }
-    enabled = in_params.is_enabled;
-
-    if (last_status != ParameterStatus::Updated) {
-        params.status = last_status;
-    }
-
-    if (in_params.is_new || skipped) {
-        usage = UsageState::Initialized;
-        params.status = ParameterStatus::Initialized;
-        skipped = in_params.buffer_address == 0 || in_params.buffer_size == 0;
-    }
-}
-
-void EffectDelay::UpdateForCommandGeneration() {
-    if (enabled) {
-        usage = UsageState::Running;
-    } else {
-        usage = UsageState::Stopped;
-    }
-    GetParams().status = ParameterStatus::Updated;
-}
-
-EffectBufferMixer::EffectBufferMixer() : EffectGeneric(EffectType::BufferMixer) {}
-EffectBufferMixer::~EffectBufferMixer() = default;
-
-void EffectBufferMixer::Update(EffectInfo::InParams& in_params) {
-    mix_id = in_params.mix_id;
-    processing_order = in_params.processing_order;
-    GetParams() = *reinterpret_cast<BufferMixerParams*>(in_params.raw.data());
-    enabled = in_params.is_enabled;
-}
-
-void EffectBufferMixer::UpdateForCommandGeneration() {
-    if (enabled) {
-        usage = UsageState::Running;
-    } else {
-        usage = UsageState::Stopped;
-    }
-}
-
-EffectReverb::EffectReverb() : EffectGeneric(EffectType::Reverb) {}
-EffectReverb::~EffectReverb() = default;
-
-void EffectReverb::Update(EffectInfo::InParams& in_params) {
-    const auto* reverb_params = reinterpret_cast<ReverbParams*>(in_params.raw.data());
-    auto& params = GetParams();
-    if (!ValidChannelCountForEffect(reverb_params->max_channels)) {
-        return;
-    }
-
-    const auto last_status = params.status;
-    mix_id = in_params.mix_id;
-    processing_order = in_params.processing_order;
-    params = *reverb_params;
-    if (!ValidChannelCountForEffect(reverb_params->channels)) {
-        params.channels = params.max_channels;
-    }
-    enabled = in_params.is_enabled;
-
-    if (last_status != ParameterStatus::Updated) {
-        params.status = last_status;
-    }
-
-    if (in_params.is_new || skipped) {
-        usage = UsageState::Initialized;
-        params.status = ParameterStatus::Initialized;
-        skipped = in_params.buffer_address == 0 || in_params.buffer_size == 0;
-    }
-}
-
-void EffectReverb::UpdateForCommandGeneration() {
-    if (enabled) {
-        usage = UsageState::Running;
-    } else {
-        usage = UsageState::Stopped;
-    }
-    GetParams().status = ParameterStatus::Updated;
-}
-
-} // namespace AudioCore

src/audio_core/effect_context.h

@@ -1,349 +0,0 @@
-// SPDX-FileCopyrightText: Copyright 2020 yuzu Emulator Project
-// SPDX-License-Identifier: GPL-2.0-or-later
-
-#pragma once
-
-#include <array>
-#include <memory>
-#include <vector>
-#include "audio_core/common.h"
-#include "audio_core/delay_line.h"
-#include "common/common_funcs.h"
-#include "common/common_types.h"
-#include "common/swap.h"
-
-namespace AudioCore {
-enum class EffectType : u8 {
-    Invalid = 0,
-    BufferMixer = 1,
-    Aux = 2,
-    Delay = 3,
-    Reverb = 4,
-    I3dl2Reverb = 5,
-    BiquadFilter = 6,
-};
-
-enum class UsageStatus : u8 {
-    Invalid = 0,
-    New = 1,
-    Initialized = 2,
-    Used = 3,
-    Removed = 4,
-};
-
-enum class UsageState {
-    Invalid = 0,
-    Initialized = 1,
-    Running = 2,
-    Stopped = 3,
-};
-
-enum class ParameterStatus : u8 {
-    Initialized = 0,
-    Updating = 1,
-    Updated = 2,
-};
-
-struct BufferMixerParams {
-    std::array<s8, AudioCommon::MAX_MIX_BUFFERS> input{};
-    std::array<s8, AudioCommon::MAX_MIX_BUFFERS> output{};
-    std::array<float_le, AudioCommon::MAX_MIX_BUFFERS> volume{};
-    s32_le count{};
-};
-static_assert(sizeof(BufferMixerParams) == 0x94, "BufferMixerParams is an invalid size");
-
-struct AuxInfoDSP {
-    u32_le read_offset{};
-    u32_le write_offset{};
-    u32_le remaining{};
-    INSERT_PADDING_WORDS(13);
-};
-static_assert(sizeof(AuxInfoDSP) == 0x40, "AuxInfoDSP is an invalid size");
-
-struct AuxInfo {
-    std::array<s8, AudioCommon::MAX_MIX_BUFFERS> input_mix_buffers{};
-    std::array<s8, AudioCommon::MAX_MIX_BUFFERS> output_mix_buffers{};
-    u32_le count{};
-    s32_le sample_rate{};
-    s32_le sample_count{};
-    s32_le mix_buffer_count{};
-    u64_le send_buffer_info{};
-    u64_le send_buffer_base{};
-
-    u64_le return_buffer_info{};
-    u64_le return_buffer_base{};
-};
-static_assert(sizeof(AuxInfo) == 0x60, "AuxInfo is an invalid size");
-
-struct I3dl2ReverbParams {
-    std::array<s8, AudioCommon::MAX_CHANNEL_COUNT> input{};
-    std::array<s8, AudioCommon::MAX_CHANNEL_COUNT> output{};
-    u16_le max_channels{};
-    u16_le channel_count{};
-    INSERT_PADDING_BYTES(1);
-    u32_le sample_rate{};
-    f32 room_hf{};
-    f32 hf_reference{};
-    f32 decay_time{};
-    f32 hf_decay_ratio{};
-    f32 room{};
-    f32 reflection{};
-    f32 reverb{};
-    f32 diffusion{};
-    f32 reflection_delay{};
-    f32 reverb_delay{};
-    f32 density{};
-    f32 dry_gain{};
-    ParameterStatus status{};
-    INSERT_PADDING_BYTES(3);
-};
-static_assert(sizeof(I3dl2ReverbParams) == 0x4c, "I3dl2ReverbParams is an invalid size");
-
-struct BiquadFilterParams {
-    std::array<s8, AudioCommon::MAX_CHANNEL_COUNT> input{};
-    std::array<s8, AudioCommon::MAX_CHANNEL_COUNT> output{};
-    std::array<s16_le, 3> numerator;
-    std::array<s16_le, 2> denominator;
-    s8 channel_count{};
-    ParameterStatus status{};
-};
-static_assert(sizeof(BiquadFilterParams) == 0x18, "BiquadFilterParams is an invalid size");
-
-struct DelayParams {
-    std::array<s8, AudioCommon::MAX_CHANNEL_COUNT> input{};
-    std::array<s8, AudioCommon::MAX_CHANNEL_COUNT> output{};
-    u16_le max_channels{};
-    u16_le channels{};
-    s32_le max_delay{};
-    s32_le delay{};
-    s32_le sample_rate{};
-    s32_le gain{};
-    s32_le feedback_gain{};
-    s32_le out_gain{};
-    s32_le dry_gain{};
-    s32_le channel_spread{};
-    s32_le low_pass{};
-    ParameterStatus status{};
-    INSERT_PADDING_BYTES(3);
-};
-static_assert(sizeof(DelayParams) == 0x38, "DelayParams is an invalid size");
-
-struct ReverbParams {
-    std::array<s8, AudioCommon::MAX_CHANNEL_COUNT> input{};
-    std::array<s8, AudioCommon::MAX_CHANNEL_COUNT> output{};
-    u16_le max_channels{};
-    u16_le channels{};
-    s32_le sample_rate{};
-    s32_le mode0{};
-    s32_le mode0_gain{};
-    s32_le pre_delay{};
-    s32_le mode1{};
-    s32_le mode1_gain{};
-    s32_le decay{};
-    s32_le hf_decay_ratio{};
-    s32_le coloration{};
-    s32_le reverb_gain{};
-    s32_le out_gain{};
-    s32_le dry_gain{};
-    ParameterStatus status{};
-    INSERT_PADDING_BYTES(3);
-};
-static_assert(sizeof(ReverbParams) == 0x44, "ReverbParams is an invalid size");
-
-class EffectInfo {
-public:
-    struct InParams {
-        EffectType type{};
-        u8 is_new{};
-        u8 is_enabled{};
-        INSERT_PADDING_BYTES(1);
-        s32_le mix_id{};
-        u64_le buffer_address{};
-        u64_le buffer_size{};
-        s32_le processing_order{};
-        INSERT_PADDING_BYTES(4);
-        union {
-            std::array<u8, 0xa0> raw;
-        };
-    };
-    static_assert(sizeof(InParams) == 0xc0, "InParams is an invalid size");
-
-    struct OutParams {
-        UsageStatus status{};
-        INSERT_PADDING_BYTES(15);
-    };
-    static_assert(sizeof(OutParams) == 0x10, "OutParams is an invalid size");
-};
-
-struct AuxAddress {
-    VAddr send_dsp_info{};
-    VAddr send_buffer_base{};
-    VAddr return_dsp_info{};
-    VAddr return_buffer_base{};
-};
-
-class EffectBase {
-public:
-    explicit EffectBase(EffectType effect_type_);
-    virtual ~EffectBase();
-
-    virtual void Update(EffectInfo::InParams& in_params) = 0;
-    virtual void UpdateForCommandGeneration() = 0;
-    [[nodiscard]] UsageState GetUsage() const;
-    [[nodiscard]] EffectType GetType() const;
-    [[nodiscard]] bool IsEnabled() const;
-    [[nodiscard]] s32 GetMixID() const;
-    [[nodiscard]] s32 GetProcessingOrder() const;
-    [[nodiscard]] std::vector<u8>& GetWorkBuffer();
-    [[nodiscard]] const std::vector<u8>& GetWorkBuffer() const;
-
-protected:
-    UsageState usage{UsageState::Invalid};
-    EffectType effect_type{};
-    s32 mix_id{};
-    s32 processing_order{};
-    bool enabled = false;
-    std::vector<u8> work_buffer{};
-};
-
-template <typename T>
-class EffectGeneric : public EffectBase {
-public:
-    explicit EffectGeneric(EffectType effect_type_) : EffectBase(effect_type_) {}
-
-    T& GetParams() {
-        return internal_params;
-    }
-
-    const T& GetParams() const {
-        return internal_params;
-    }
-
-private:
-    T internal_params{};
-};
-
-class EffectStubbed : public EffectBase {
-public:
-    explicit EffectStubbed();
-    ~EffectStubbed() override;
-
-    void Update(EffectInfo::InParams& in_params) override;
-    void UpdateForCommandGeneration() override;
-};
-
-struct I3dl2ReverbState {
-    f32 lowpass_0{};
-    f32 lowpass_1{};
-    f32 lowpass_2{};
-
-    DelayLineBase early_delay_line{};
-    std::array<u32, AudioCommon::I3DL2REVERB_TAPS> early_tap_steps{};
-    f32 early_gain{};
-    f32 late_gain{};
-
-    u32 early_to_late_taps{};
-    std::array<DelayLineBase, AudioCommon::I3DL2REVERB_DELAY_LINE_COUNT> fdn_delay_line{};
-    std::array<DelayLineAllPass, AudioCommon::I3DL2REVERB_DELAY_LINE_COUNT> decay_delay_line0{};
-    std::array<DelayLineAllPass, AudioCommon::I3DL2REVERB_DELAY_LINE_COUNT> decay_delay_line1{};
-    f32 last_reverb_echo{};
-    DelayLineBase center_delay_line{};
-    std::array<std::array<f32, AudioCommon::I3DL2REVERB_DELAY_LINE_COUNT>, 3> lpf_coefficients{};
-    std::array<f32, AudioCommon::I3DL2REVERB_DELAY_LINE_COUNT> shelf_filter{};
-    f32 dry_gain{};
-};
-
-class EffectI3dl2Reverb : public EffectGeneric<I3dl2ReverbParams> {
-public:
-    explicit EffectI3dl2Reverb();
-    ~EffectI3dl2Reverb() override;
-
-    void Update(EffectInfo::InParams& in_params) override;
-    void UpdateForCommandGeneration() override;
-
-    I3dl2ReverbState& GetState();
-    const I3dl2ReverbState& GetState() const;
-
-private:
-    bool skipped = false;
-    I3dl2ReverbState state{};
-};
-
-class EffectBiquadFilter : public EffectGeneric<BiquadFilterParams> {
-public:
-    explicit EffectBiquadFilter();
-    ~EffectBiquadFilter() override;
-
-    void Update(EffectInfo::InParams& in_params) override;
-    void UpdateForCommandGeneration() override;
-};
-
-class EffectAuxInfo : public EffectGeneric<AuxInfo> {
-public:
-    explicit EffectAuxInfo();
-    ~EffectAuxInfo() override;
-
-    void Update(EffectInfo::InParams& in_params) override;
-    void UpdateForCommandGeneration() override;
-    [[nodiscard]] VAddr GetSendInfo() const;
-    [[nodiscard]] VAddr GetSendBuffer() const;
-    [[nodiscard]] VAddr GetRecvInfo() const;
-    [[nodiscard]] VAddr GetRecvBuffer() const;
-
-private:
-    VAddr send_info{};
-    VAddr send_buffer{};
-    VAddr recv_info{};
-    VAddr recv_buffer{};
-    bool skipped = false;
-    AuxAddress addresses{};
-};
-
-class EffectDelay : public EffectGeneric<DelayParams> {
-public:
-    explicit EffectDelay();
-    ~EffectDelay() override;
-
-    void Update(EffectInfo::InParams& in_params) override;
-    void UpdateForCommandGeneration() override;
-
-private:
-    bool skipped = false;
-};
-
-class EffectBufferMixer : public EffectGeneric<BufferMixerParams> {
-public:
-    explicit EffectBufferMixer();
-    ~EffectBufferMixer() override;
-
-    void Update(EffectInfo::InParams& in_params) override;
-    void UpdateForCommandGeneration() override;
-};
-
-class EffectReverb : public EffectGeneric<ReverbParams> {
-public:
-    explicit EffectReverb();
-    ~EffectReverb() override;
-
-    void Update(EffectInfo::InParams& in_params) override;
-    void UpdateForCommandGeneration() override;
-
-private:
-    bool skipped = false;
-};
-
-class EffectContext {
-public:
-    explicit EffectContext(std::size_t effect_count_);
-    ~EffectContext();
-
-    [[nodiscard]] std::size_t GetCount() const;
-    [[nodiscard]] EffectBase* GetInfo(std::size_t i);
-    [[nodiscard]] EffectBase* RetargetEffect(std::size_t i, EffectType effect);
-    [[nodiscard]] const EffectBase* GetInfo(std::size_t i) const;
-
-private:
-    std::size_t effect_count{};
-    std::vector<std::unique_ptr<EffectBase>> effects;
-};
-} // namespace AudioCore

src/audio_core/in/audio_in.cpp

@@ -0,0 +1,100 @@
+// SPDX-FileCopyrightText: Copyright 2022 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include "audio_core/audio_in_manager.h"
+#include "audio_core/in/audio_in.h"
+#include "core/hle/kernel/k_event.h"
+
+namespace AudioCore::AudioIn {
+
+In::In(Core::System& system_, Manager& manager_, Kernel::KEvent* event_, size_t session_id_)
+    : manager{manager_}, parent_mutex{manager.mutex}, event{event_}, system{system_, event,
+                                                                            session_id_} {}
+
+void In::Free() {
+    std::scoped_lock l{parent_mutex};
+    manager.ReleaseSessionId(system.GetSessionId());
+}
+
+System& In::GetSystem() {
+    return system;
+}
+
+AudioIn::State In::GetState() {
+    std::scoped_lock l{parent_mutex};
+    return system.GetState();
+}
+
+Result In::StartSystem() {
+    std::scoped_lock l{parent_mutex};
+    return system.Start();
+}
+
+void In::StartSession() {
+    std::scoped_lock l{parent_mutex};
+    system.StartSession();
+}
+
+Result In::StopSystem() {
+    std::scoped_lock l{parent_mutex};
+    return system.Stop();
+}
+
+Result In::AppendBuffer(const AudioInBuffer& buffer, u64 tag) {
+    std::scoped_lock l{parent_mutex};
+
+    if (system.AppendBuffer(buffer, tag)) {
+        return ResultSuccess;
+    }
+    return Service::Audio::ERR_BUFFER_COUNT_EXCEEDED;
+}
+
+void In::ReleaseAndRegisterBuffers() {
+    std::scoped_lock l{parent_mutex};
+    if (system.GetState() == State::Started) {
+        system.ReleaseBuffers();
+        system.RegisterBuffers();
+    }
+}
+
+bool In::FlushAudioInBuffers() {
+    std::scoped_lock l{parent_mutex};
+    return system.FlushAudioInBuffers();
+}
+
+u32 In::GetReleasedBuffers(std::span<u64> tags) {
+    std::scoped_lock l{parent_mutex};
+    return system.GetReleasedBuffers(tags);
+}
+
+Kernel::KReadableEvent& In::GetBufferEvent() {
+    std::scoped_lock l{parent_mutex};
+    return event->GetReadableEvent();
+}
+
+f32 In::GetVolume() {
+    std::scoped_lock l{parent_mutex};
+    return system.GetVolume();
+}
+
+void In::SetVolume(f32 volume) {
+    std::scoped_lock l{parent_mutex};
+    system.SetVolume(volume);
+}
+
+bool In::ContainsAudioBuffer(u64 tag) {
+    std::scoped_lock l{parent_mutex};
+    return system.ContainsAudioBuffer(tag);
+}
+
+u32 In::GetBufferCount() {
+    std::scoped_lock l{parent_mutex};
+    return system.GetBufferCount();
+}
+
+u64 In::GetPlayedSampleCount() {
+    std::scoped_lock l{parent_mutex};
+    return system.GetPlayedSampleCount();
+}
+
+} // namespace AudioCore::AudioIn

src/audio_core/in/audio_in.h

@@ -0,0 +1,147 @@
+// SPDX-FileCopyrightText: Copyright 2022 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#include <mutex>
+
+#include "audio_core/in/audio_in_system.h"
+
+namespace Core {
+class System;
+}
+
+namespace Kernel {
+class KEvent;
+class KReadableEvent;
+} // namespace Kernel
+
+namespace AudioCore::AudioIn {
+class Manager;
+
+/**
+ * Interface between the service and audio in system. Mainly responsible for forwarding service
+ * calls to the system.
+ */
+class In {
+public:
+    explicit In(Core::System& system, Manager& manager, Kernel::KEvent* event, size_t session_id);
+
+    /**
+     * Free this audio in from the audio in manager.
+     */
+    void Free();
+
+    /**
+     * Get this audio in's system.
+     */
+    System& GetSystem();
+
+    /**
+     * Get the current state.
+     *
+     * @return Started or Stopped.
+     */
+    AudioIn::State GetState();
+
+    /**
+     * Start the system
+     *
+     * @return Result code
+     */
+    Result StartSystem();
+
+    /**
+     * Start the system's device session.
+     */
+    void StartSession();
+
+    /**
+     * Stop the system.
+     *
+     * @return Result code
+     */
+    Result StopSystem();
+
+    /**
+     * Append a new buffer to the system, the buffer event will be signalled when it is filled.
+     *
+     * @param buffer - The new buffer to append.
+     * @param tag    - Unique tag for this buffer.
+     * @return Result code.
+     */
+    Result AppendBuffer(const AudioInBuffer& buffer, u64 tag);
+
+    /**
+     * Release all completed buffers, and register any appended.
+     */
+    void ReleaseAndRegisterBuffers();
+
+    /**
+     * Flush all buffers.
+     */
+    bool FlushAudioInBuffers();
+
+    /**
+     * Get all of the currently released buffers.
+     *
+     * @param tags - Output container for the buffer tags which were released.
+     * @return The number of buffers released.
+     */
+    u32 GetReleasedBuffers(std::span<u64> tags);
+
+    /**
+     * Get the buffer event for this audio in, this event will be signalled when a buffer is filled.
+     *
+     * @return The buffer event.
+     */
+    Kernel::KReadableEvent& GetBufferEvent();
+
+    /**
+     * Get the current system volume.
+     *
+     * @return The current volume.
+     */
+    f32 GetVolume();
+
+    /**
+     * Set the system volume.
+     *
+     * @param volume - The volume to set.
+     */
+    void SetVolume(f32 volume);
+
+    /**
+     * Check if a buffer is in the system.
+     *
+     * @param tag - The tag to search for.
+     * @return True if the buffer is in the system, otherwise false.
+     */
+    bool ContainsAudioBuffer(u64 tag);
+
+    /**
+     * Get the maximum number of buffers.
+     *
+     * @return The maximum number of buffers.
+     */
+    u32 GetBufferCount();
+
+    /**
+     * Get the total played sample count for this audio in.
+     *
+     * @return The played sample count.
+     */
+    u64 GetPlayedSampleCount();
+
+private:
+    /// The AudioIn::Manager this audio in is registered with
+    Manager& manager;
+    /// Manager's mutex
+    std::recursive_mutex& parent_mutex;
+    /// Buffer event, signalled when buffers are ready to be released
+    Kernel::KEvent* event;
+    /// Main audio in system
+    System system;
+};
+
+} // namespace AudioCore::AudioIn

src/audio_core/in/audio_in_system.cpp

@@ -0,0 +1,213 @@
+// SPDX-FileCopyrightText: Copyright 2022 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include <mutex>
+#include "audio_core/audio_event.h"
+#include "audio_core/audio_manager.h"
+#include "audio_core/in/audio_in_system.h"
+#include "common/logging/log.h"
+#include "core/core.h"
+#include "core/core_timing.h"
+#include "core/hle/kernel/k_event.h"
+
+namespace AudioCore::AudioIn {
+
+System::System(Core::System& system_, Kernel::KEvent* event_, const size_t session_id_)
+    : system{system_}, buffer_event{event_},
+      session_id{session_id_}, session{std::make_unique<DeviceSession>(system_)} {}
+
+System::~System() {
+    Finalize();
+}
+
+void System::Finalize() {
+    Stop();
+    session->Finalize();
+    buffer_event->GetWritableEvent().Signal();
+}
+
+void System::StartSession() {
+    session->Start();
+}
+
+size_t System::GetSessionId() const {
+    return session_id;
+}
+
+std::string_view System::GetDefaultDeviceName() {
+    return "BuiltInHeadset";
+}
+
+std::string_view System::GetDefaultUacDeviceName() {
+    return "Uac";
+}
+
+Result System::IsConfigValid(const std::string_view device_name,
+                             const AudioInParameter& in_params) {
+    if ((device_name.size() > 0) &&
+        (device_name != GetDefaultDeviceName() && device_name != GetDefaultUacDeviceName())) {
+        return Service::Audio::ERR_INVALID_DEVICE_NAME;
+    }
+
+    if (in_params.sample_rate != TargetSampleRate && in_params.sample_rate > 0) {
+        return Service::Audio::ERR_INVALID_SAMPLE_RATE;
+    }
+
+    return ResultSuccess;
+}
+
+Result System::Initialize(std::string& device_name, const AudioInParameter& in_params,
+                          const u32 handle_, const u64 applet_resource_user_id_) {
+    auto result{IsConfigValid(device_name, in_params)};
+    if (result.IsError()) {
+        return result;
+    }
+
+    handle = handle_;
+    applet_resource_user_id = applet_resource_user_id_;
+    if (device_name.empty() || device_name[0] == '\0') {
+        name = std::string(GetDefaultDeviceName());
+    } else {
+        name = std::move(device_name);
+    }
+
+    sample_rate = TargetSampleRate;
+    sample_format = SampleFormat::PcmInt16;
+    channel_count = in_params.channel_count <= 2 ? 2 : 6;
+    volume = 1.0f;
+    is_uac = name == "Uac";
+    return ResultSuccess;
+}
+
+Result System::Start() {
+    if (state != State::Stopped) {
+        return Service::Audio::ERR_OPERATION_FAILED;
+    }
+
+    session->Initialize(name, sample_format, channel_count, session_id, handle,
+                        applet_resource_user_id, Sink::StreamType::In);
+    session->SetVolume(volume);
+    session->Start();
+    state = State::Started;
+
+    std::vector<AudioBuffer> buffers_to_flush{};
+    buffers.RegisterBuffers(buffers_to_flush);
+    session->AppendBuffers(buffers_to_flush);
+
+    return ResultSuccess;
+}
+
+Result System::Stop() {
+    if (state == State::Started) {
+        session->Stop();
+        session->SetVolume(0.0f);
+        state = State::Stopped;
+    }
+
+    return ResultSuccess;
+}
+
+bool System::AppendBuffer(const AudioInBuffer& buffer, const u64 tag) {
+    if (buffers.GetTotalBufferCount() == BufferCount) {
+        return false;
+    }
+
+    AudioBuffer new_buffer{
+        .played_timestamp = 0, .samples = buffer.samples, .tag = tag, .size = buffer.size};
+
+    buffers.AppendBuffer(new_buffer);
+    RegisterBuffers();
+
+    return true;
+}
+
+void System::RegisterBuffers() {
+    if (state == State::Started) {
+        std::vector<AudioBuffer> registered_buffers{};
+        buffers.RegisterBuffers(registered_buffers);
+        session->AppendBuffers(registered_buffers);
+    }
+}
+
+void System::ReleaseBuffers() {
+    bool signal{buffers.ReleaseBuffers(system.CoreTiming(), *session)};
+
+    if (signal) {
+        // Signal if any buffer was released, or if none are registered, we need more.
+        buffer_event->GetWritableEvent().Signal();
+    }
+}
+
+u32 System::GetReleasedBuffers(std::span<u64> tags) {
+    return buffers.GetReleasedBuffers(tags);
+}
+
+bool System::FlushAudioInBuffers() {
+    if (state != State::Started) {
+        return false;
+    }
+
+    u32 buffers_released{};
+    buffers.FlushBuffers(buffers_released);
+
+    if (buffers_released > 0) {
+        buffer_event->GetWritableEvent().Signal();
+    }
+    return true;
+}
+
+u16 System::GetChannelCount() const {
+    return channel_count;
+}
+
+u32 System::GetSampleRate() const {
+    return sample_rate;
+}
+
+SampleFormat System::GetSampleFormat() const {
+    return sample_format;
+}
+
+State System::GetState() {
+    switch (state) {
+    case State::Started:
+    case State::Stopped:
+        return state;
+    default:
+        LOG_ERROR(Service_Audio, "AudioIn invalid state!");
+        state = State::Stopped;
+        break;
+    }
+    return state;
+}
+
+std::string System::GetName() const {
+    return name;
+}
+
+f32 System::GetVolume() const {
+    return volume;
+}
+
+void System::SetVolume(const f32 volume_) {
+    volume = volume_;
+    session->SetVolume(volume_);
+}
+
+bool System::ContainsAudioBuffer(const u64 tag) {
+    return buffers.ContainsBuffer(tag);
+}
+
+u32 System::GetBufferCount() {
+    return buffers.GetAppendedRegisteredCount();
+}
+
+u64 System::GetPlayedSampleCount() const {
+    return session->GetPlayedSampleCount();
+}
+
+bool System::IsUac() const {
+    return is_uac;
+}
+
+} // namespace AudioCore::AudioIn

src/audio_core/in/audio_in_system.h

@@ -0,0 +1,275 @@
+// SPDX-FileCopyrightText: Copyright 2022 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#include <atomic>
+#include <memory>
+#include <span>
+#include <string>
+
+#include "audio_core/common/common.h"
+#include "audio_core/device/audio_buffers.h"
+#include "audio_core/device/device_session.h"
+#include "core/hle/service/audio/errors.h"
+
+namespace Core {
+class System;
+}
+
+namespace Kernel {
+class KEvent;
+}
+
+namespace AudioCore::AudioIn {
+
+constexpr SessionTypes SessionType = SessionTypes::AudioIn;
+
+struct AudioInParameter {
+    /* 0x0 */ s32_le sample_rate;
+    /* 0x4 */ u16_le channel_count;
+    /* 0x6 */ u16_le reserved;
+};
+static_assert(sizeof(AudioInParameter) == 0x8, "AudioInParameter is an invalid size");
+
+struct AudioInParameterInternal {
+    /* 0x0 */ u32_le sample_rate;
+    /* 0x4 */ u32_le channel_count;
+    /* 0x8 */ u32_le sample_format;
+    /* 0xC */ u32_le state;
+};
+static_assert(sizeof(AudioInParameterInternal) == 0x10,
+              "AudioInParameterInternal is an invalid size");
+
+struct AudioInBuffer {
+    /* 0x00 */ AudioInBuffer* next;
+    /* 0x08 */ VAddr samples;
+    /* 0x10 */ u64 capacity;
+    /* 0x18 */ u64 size;
+    /* 0x20 */ u64 offset;
+};
+static_assert(sizeof(AudioInBuffer) == 0x28, "AudioInBuffer is an invalid size");
+
+enum class State {
+    Started,
+    Stopped,
+};
+
+/**
+ * Controls and drives audio input.
+ */
+class System {
+public:
+    explicit System(Core::System& system, Kernel::KEvent* event, size_t session_id);
+    ~System();
+
+    /**
+     * Get the default audio input device name.
+     *
+     * @return The default audio input device name.
+     */
+    std::string_view GetDefaultDeviceName();
+
+    /**
+     * Get the default USB audio input device name.
+     * This is preferred over non-USB as some games refuse to work with the BuiltInHeadset
+     * (e.g Let's Sing).
+     *
+     * @return The default USB audio input device name.
+     */
+    std::string_view GetDefaultUacDeviceName();
+
+    /**
+     * Is the given initialize config valid?
+     *
+     * @param device_name - The name of the requested input device.
+     * @param in_params   - Input parameters, see AudioInParameter.
+     * @return Result code.
+     */
+    Result IsConfigValid(std::string_view device_name, const AudioInParameter& in_params);
+
+    /**
+     * Initialize this system.
+     *
+     * @param device_name             - The name of the requested input device.
+     * @param in_params               - Input parameters, see AudioInParameter.
+     * @param handle                  - Unused.
+     * @param applet_resource_user_id - Unused.
+     * @return Result code.
+     */
+    Result Initialize(std::string& device_name, const AudioInParameter& in_params, u32 handle,
+                      u64 applet_resource_user_id);
+
+    /**
+     * Start this system.
+     *
+     * @return Result code.
+     */
+    Result Start();
+
+    /**
+     * Stop this system.
+     *
+     * @return Result code.
+     */
+    Result Stop();
+
+    /**
+     * Finalize this system.
+     */
+    void Finalize();
+
+    /**
+     * Start this system's device session.
+     */
+    void StartSession();
+
+    /**
+     * Get this system's id.
+     */
+    size_t GetSessionId() const;
+
+    /**
+     * Append a new buffer to the device.
+     *
+     * @param buffer - New buffer to append.
+     * @param tag    - Unique tag of the buffer.
+     * @return True if the buffer was appended, otherwise false.
+     */
+    bool AppendBuffer(const AudioInBuffer& buffer, u64 tag);
+
+    /**
+     * Register all appended buffers.
+     */
+    void RegisterBuffers();
+
+    /**
+     * Release all registered buffers.
+     */
+    void ReleaseBuffers();
+
+    /**
+     * Get all released buffers.
+     *
+     * @param tags - Container to be filled with the released buffers' tags.
+     * @return The number of buffers released.
+     */
+    u32 GetReleasedBuffers(std::span<u64> tags);
+
+    /**
+     * Flush all appended and registered buffers.
+     *
+     * @return True if buffers were successfully flushed, otherwise false.
+     */
+    bool FlushAudioInBuffers();
+
+    /**
+     * Get this system's current channel count.
+     *
+     * @return The channel count.
+     */
+    u16 GetChannelCount() const;
+
+    /**
+     * Get this system's current sample rate.
+     *
+     * @return The sample rate.
+     */
+    u32 GetSampleRate() const;
+
+    /**
+     * Get this system's current sample format.
+     *
+     * @return The sample format.
+     */
+    SampleFormat GetSampleFormat() const;
+
+    /**
+     * Get this system's current state.
+     *
+     * @return The current state.
+     */
+    State GetState();
+
+    /**
+     * Get this system's name.
+     *
+     * @return The system's name.
+     */
+    std::string GetName() const;
+
+    /**
+     * Get this system's current volume.
+     *
+     * @return The system's current volume.
+     */
+    f32 GetVolume() const;
+
+    /**
+     * Set this system's current volume.
+     *
+     * @param The new volume.
+     */
+    void SetVolume(f32 volume);
+
+    /**
+     * Does the system contain this buffer?
+     *
+     * @param tag - Unique tag to search for.
+     * @return True if the buffer is in the system, otherwise false.
+     */
+    bool ContainsAudioBuffer(u64 tag);
+
+    /**
+     * Get the maximum number of usable buffers (default 32).
+     *
+     * @return The number of buffers.
+     */
+    u32 GetBufferCount();
+
+    /**
+     * Get the total number of samples played by this system.
+     *
+     * @return The number of samples.
+     */
+    u64 GetPlayedSampleCount() const;
+
+    /**
+     * Is this system using a USB device?
+     *
+     * @return True if using a USB device, otherwise false.
+     */
+    bool IsUac() const;
+
+private:
+    /// Core system
+    Core::System& system;
+    /// (Unused)
+    u32 handle{};
+    /// (Unused)
+    u64 applet_resource_user_id{};
+    /// Buffer event, signalled when a buffer is ready
+    Kernel::KEvent* buffer_event;
+    /// Session id of this system
+    size_t session_id{};
+    /// Device session for this system
+    std::unique_ptr<DeviceSession> session;
+    /// Audio buffers in use by this system
+    AudioBuffers<BufferCount> buffers{BufferCount};
+    /// Sample rate of this system
+    u32 sample_rate{};
+    /// Sample format of this system
+    SampleFormat sample_format{SampleFormat::PcmInt16};
+    /// Channel count of this system
+    u16 channel_count{};
+    /// State of this system
+    std::atomic<State> state{State::Stopped};
+    /// Name of this system
+    std::string name{};
+    /// Volume of this system
+    f32 volume{1.0f};
+    /// Is this system's device USB?
+    bool is_uac{false};
+};
+
+} // namespace AudioCore::AudioIn

src/audio_core/info_updater.cpp

@@ -1,511 +0,0 @@
-// SPDX-FileCopyrightText: Copyright 2020 yuzu Emulator Project
-// SPDX-License-Identifier: GPL-2.0-or-later
-
-#include "audio_core/behavior_info.h"
-#include "audio_core/effect_context.h"
-#include "audio_core/info_updater.h"
-#include "audio_core/memory_pool.h"
-#include "audio_core/mix_context.h"
-#include "audio_core/sink_context.h"
-#include "audio_core/splitter_context.h"
-#include "audio_core/voice_context.h"
-#include "common/logging/log.h"
-
-namespace AudioCore {
-
-InfoUpdater::InfoUpdater(const std::vector<u8>& in_params_, std::vector<u8>& out_params_,
-                         BehaviorInfo& behavior_info_)
-    : in_params(in_params_), out_params(out_params_), behavior_info(behavior_info_) {
-    ASSERT(
-        AudioCommon::CanConsumeBuffer(in_params.size(), 0, sizeof(AudioCommon::UpdateDataHeader)));
-    std::memcpy(&input_header, in_params.data(), sizeof(AudioCommon::UpdateDataHeader));
-    output_header.total_size = sizeof(AudioCommon::UpdateDataHeader);
-}
-
-InfoUpdater::~InfoUpdater() = default;
-
-bool InfoUpdater::UpdateBehaviorInfo(BehaviorInfo& in_behavior_info) {
-    if (input_header.size.behavior != sizeof(BehaviorInfo::InParams)) {
-        LOG_ERROR(Audio, "Behavior info is an invalid size, expecting 0x{:X} but got 0x{:X}",
-                  sizeof(BehaviorInfo::InParams), input_header.size.behavior);
-        return false;
-    }
-
-    if (!AudioCommon::CanConsumeBuffer(in_params.size(), input_offset,
-                                       sizeof(BehaviorInfo::InParams))) {
-        LOG_ERROR(Audio, "Buffer is an invalid size!");
-        return false;
-    }
-
-    BehaviorInfo::InParams behavior_in{};
-    std::memcpy(&behavior_in, in_params.data() + input_offset, sizeof(BehaviorInfo::InParams));
-    input_offset += sizeof(BehaviorInfo::InParams);
-
-    // Make sure it's an audio revision we can actually support
-    if (!AudioCommon::IsValidRevision(behavior_in.revision)) {
-        LOG_ERROR(Audio, "Invalid input revision, revision=0x{:08X}", behavior_in.revision);
-        return false;
-    }
-
-    // Make sure that our behavior info revision matches the input
-    if (in_behavior_info.GetUserRevision() != behavior_in.revision) {
-        LOG_ERROR(Audio,
-                  "User revision differs from input revision, expecting 0x{:08X} but got 0x{:08X}",
-                  in_behavior_info.GetUserRevision(), behavior_in.revision);
-        return false;
-    }
-
-    // Update behavior info flags
-    in_behavior_info.ClearError();
-    in_behavior_info.UpdateFlags(behavior_in.flags);
-
-    return true;
-}
-
-bool InfoUpdater::UpdateMemoryPools(std::vector<ServerMemoryPoolInfo>& memory_pool_info) {
-    const auto memory_pool_count = memory_pool_info.size();
-    const auto total_memory_pool_in = sizeof(ServerMemoryPoolInfo::InParams) * memory_pool_count;
-    const auto total_memory_pool_out = sizeof(ServerMemoryPoolInfo::OutParams) * memory_pool_count;
-
-    if (input_header.size.memory_pool != total_memory_pool_in) {
-        LOG_ERROR(Audio, "Memory pools are an invalid size, expecting 0x{:X} but got 0x{:X}",
-                  total_memory_pool_in, input_header.size.memory_pool);
-        return false;
-    }
-
-    if (!AudioCommon::CanConsumeBuffer(in_params.size(), input_offset, total_memory_pool_in)) {
-        LOG_ERROR(Audio, "Buffer is an invalid size!");
-        return false;
-    }
-
-    std::vector<ServerMemoryPoolInfo::InParams> mempool_in(memory_pool_count);
-    std::vector<ServerMemoryPoolInfo::OutParams> mempool_out(memory_pool_count);
-
-    std::memcpy(mempool_in.data(), in_params.data() + input_offset, total_memory_pool_in);
-    input_offset += total_memory_pool_in;
-
-    // Update our memory pools
-    for (std::size_t i = 0; i < memory_pool_count; i++) {
-        if (!memory_pool_info[i].Update(mempool_in[i], mempool_out[i])) {
-            LOG_ERROR(Audio, "Failed to update memory pool {}!", i);
-            return false;
-        }
-    }
-
-    if (!AudioCommon::CanConsumeBuffer(out_params.size(), output_offset,
-                                       sizeof(BehaviorInfo::InParams))) {
-        LOG_ERROR(Audio, "Buffer is an invalid size!");
-        return false;
-    }
-
-    std::memcpy(out_params.data() + output_offset, mempool_out.data(), total_memory_pool_out);
-    output_offset += total_memory_pool_out;
-    output_header.size.memory_pool = static_cast<u32>(total_memory_pool_out);
-    return true;
-}
-
-bool InfoUpdater::UpdateVoiceChannelResources(VoiceContext& voice_context) {
-    const auto voice_count = voice_context.GetVoiceCount();
-    const auto voice_size = voice_count * sizeof(VoiceChannelResource::InParams);
-    std::vector<VoiceChannelResource::InParams> resources_in(voice_count);
-
-    if (input_header.size.voice_channel_resource != voice_size) {
-        LOG_ERROR(Audio, "VoiceChannelResource is an invalid size, expecting 0x{:X} but got 0x{:X}",
-                  voice_size, input_header.size.voice_channel_resource);
-        return false;
-    }
-
-    if (!AudioCommon::CanConsumeBuffer(in_params.size(), input_offset, voice_size)) {
-        LOG_ERROR(Audio, "Buffer is an invalid size!");
-        return false;
-    }
-
-    std::memcpy(resources_in.data(), in_params.data() + input_offset, voice_size);
-    input_offset += voice_size;
-
-    // Update our channel resources
-    for (std::size_t i = 0; i < voice_count; i++) {
-        // Grab our channel resource
-        auto& resource = voice_context.GetChannelResource(i);
-        resource.Update(resources_in[i]);
-    }
-
-    return true;
-}
-
-bool InfoUpdater::UpdateVoices(VoiceContext& voice_context,
-                               [[maybe_unused]] std::vector<ServerMemoryPoolInfo>& memory_pool_info,
-                               [[maybe_unused]] VAddr audio_codec_dsp_addr) {
-    const auto voice_count = voice_context.GetVoiceCount();
-    std::vector<VoiceInfo::InParams> voice_in(voice_count);
-    std::vector<VoiceInfo::OutParams> voice_out(voice_count);
-
-    const auto voice_in_size = voice_count * sizeof(VoiceInfo::InParams);
-    const auto voice_out_size = voice_count * sizeof(VoiceInfo::OutParams);
-
-    if (input_header.size.voice != voice_in_size) {
-        LOG_ERROR(Audio, "Voices are an invalid size, expecting 0x{:X} but got 0x{:X}",
-                  voice_in_size, input_header.size.voice);
-        return false;
-    }
-
-    if (!AudioCommon::CanConsumeBuffer(in_params.size(), input_offset, voice_in_size)) {
-        LOG_ERROR(Audio, "Buffer is an invalid size!");
-        return false;
-    }
-
-    std::memcpy(voice_in.data(), in_params.data() + input_offset, voice_in_size);
-    input_offset += voice_in_size;
-
-    // Set all voices to not be in use
-    for (std::size_t i = 0; i < voice_count; i++) {
-        voice_context.GetInfo(i).GetInParams().in_use = false;
-    }
-
-    // Update our voices
-    for (std::size_t i = 0; i < voice_count; i++) {
-        auto& voice_in_params = voice_in[i];
-        const auto channel_count = static_cast<std::size_t>(voice_in_params.channel_count);
-        // Skip if it's not currently in use
-        if (!voice_in_params.is_in_use) {
-            continue;
-        }
-        // Voice states for each channel
-        std::array<VoiceState*, AudioCommon::MAX_CHANNEL_COUNT> voice_states{};
-        ASSERT(static_cast<std::size_t>(voice_in_params.id) < voice_count);
-
-        // Grab our current voice info
-        auto& voice_info = voice_context.GetInfo(static_cast<std::size_t>(voice_in_params.id));
-
-        ASSERT(channel_count <= AudioCommon::MAX_CHANNEL_COUNT);
-
-        // Get all our channel voice states
-        for (std::size_t channel = 0; channel < channel_count; channel++) {
-            voice_states[channel] =
-                &voice_context.GetState(voice_in_params.voice_channel_resource_ids[channel]);
-        }
-
-        if (voice_in_params.is_new) {
-            // Default our values for our voice
-            voice_info.Initialize();
-
-            // Zero out our voice states
-            for (std::size_t channel = 0; channel < channel_count; channel++) {
-                std::memset(voice_states[channel], 0, sizeof(VoiceState));
-            }
-        }
-
-        // Update our voice
-        voice_info.UpdateParameters(voice_in_params, behavior_info);
-        // TODO(ogniK): Handle mapping errors with behavior info based on in params response
-
-        // Update our wave buffers
-        voice_info.UpdateWaveBuffers(voice_in_params, voice_states, behavior_info);
-        voice_info.WriteOutStatus(voice_out[i], voice_in_params, voice_states);
-    }
-
-    if (!AudioCommon::CanConsumeBuffer(out_params.size(), output_offset, voice_out_size)) {
-        LOG_ERROR(Audio, "Buffer is an invalid size!");
-        return false;
-    }
-    std::memcpy(out_params.data() + output_offset, voice_out.data(), voice_out_size);
-    output_offset += voice_out_size;
-    output_header.size.voice = static_cast<u32>(voice_out_size);
-    return true;
-}
-
-bool InfoUpdater::UpdateEffects(EffectContext& effect_context, bool is_active) {
-    const auto effect_count = effect_context.GetCount();
-    std::vector<EffectInfo::InParams> effect_in(effect_count);
-    std::vector<EffectInfo::OutParams> effect_out(effect_count);
-
-    const auto total_effect_in = effect_count * sizeof(EffectInfo::InParams);
-    const auto total_effect_out = effect_count * sizeof(EffectInfo::OutParams);
-
-    if (input_header.size.effect != total_effect_in) {
-        LOG_ERROR(Audio, "Effects are an invalid size, expecting 0x{:X} but got 0x{:X}",
-                  total_effect_in, input_header.size.effect);
-        return false;
-    }
-
-    if (!AudioCommon::CanConsumeBuffer(in_params.size(), input_offset, total_effect_in)) {
-        LOG_ERROR(Audio, "Buffer is an invalid size!");
-        return false;
-    }
-
-    std::memcpy(effect_in.data(), in_params.data() + input_offset, total_effect_in);
-    input_offset += total_effect_in;
-
-    // Update effects
-    for (std::size_t i = 0; i < effect_count; i++) {
-        auto* info = effect_context.GetInfo(i);
-        if (effect_in[i].type != info->GetType()) {
-            info = effect_context.RetargetEffect(i, effect_in[i].type);
-        }
-
-        info->Update(effect_in[i]);
-
-        if ((!is_active && info->GetUsage() != UsageState::Initialized) ||
-            info->GetUsage() == UsageState::Stopped) {
-            effect_out[i].status = UsageStatus::Removed;
-        } else {
-            effect_out[i].status = UsageStatus::Used;
-        }
-    }
-
-    if (!AudioCommon::CanConsumeBuffer(out_params.size(), output_offset, total_effect_out)) {
-        LOG_ERROR(Audio, "Buffer is an invalid size!");
-        return false;
-    }
-
-    std::memcpy(out_params.data() + output_offset, effect_out.data(), total_effect_out);
-    output_offset += total_effect_out;
-    output_header.size.effect = static_cast<u32>(total_effect_out);
-
-    return true;
-}
-
-bool InfoUpdater::UpdateSplitterInfo(SplitterContext& splitter_context) {
-    std::size_t start_offset = input_offset;
-    std::size_t bytes_read{};
-    // Update splitter context
-    if (!splitter_context.Update(in_params, input_offset, bytes_read)) {
-        LOG_ERROR(Audio, "Failed to update splitter context!");
-        return false;
-    }
-
-    const auto consumed = input_offset - start_offset;
-
-    if (input_header.size.splitter != consumed) {
-        LOG_ERROR(Audio, "Splitters is an invalid size, expecting 0x{:X} but got 0x{:X}",
-                  bytes_read, input_header.size.splitter);
-        return false;
-    }
-
-    return true;
-}
-
-Result InfoUpdater::UpdateMixes(MixContext& mix_context, std::size_t mix_buffer_count,
-                                SplitterContext& splitter_context, EffectContext& effect_context) {
-    std::vector<MixInfo::InParams> mix_in_params;
-
-    if (!behavior_info.IsMixInParameterDirtyOnlyUpdateSupported()) {
-        // If we're not dirty, get ALL mix in parameters
-        const auto context_mix_count = mix_context.GetCount();
-        const auto total_mix_in = context_mix_count * sizeof(MixInfo::InParams);
-        if (input_header.size.mixer != total_mix_in) {
-            LOG_ERROR(Audio, "Mixer is an invalid size, expecting 0x{:X} but got 0x{:X}",
-                      total_mix_in, input_header.size.mixer);
-            return AudioCommon::Audren::ERR_INVALID_PARAMETERS;
-        }
-
-        if (!AudioCommon::CanConsumeBuffer(in_params.size(), input_offset, total_mix_in)) {
-            LOG_ERROR(Audio, "Buffer is an invalid size!");
-            return AudioCommon::Audren::ERR_INVALID_PARAMETERS;
-        }
-
-        mix_in_params.resize(context_mix_count);
-        std::memcpy(mix_in_params.data(), in_params.data() + input_offset, total_mix_in);
-
-        input_offset += total_mix_in;
-    } else {
-        // Only update the "dirty" mixes
-        MixInfo::DirtyHeader dirty_header{};
-        if (!AudioCommon::CanConsumeBuffer(in_params.size(), input_offset,
-                                           sizeof(MixInfo::DirtyHeader))) {
-            LOG_ERROR(Audio, "Buffer is an invalid size!");
-            return AudioCommon::Audren::ERR_INVALID_PARAMETERS;
-        }
-
-        std::memcpy(&dirty_header, in_params.data() + input_offset, sizeof(MixInfo::DirtyHeader));
-        input_offset += sizeof(MixInfo::DirtyHeader);
-
-        const auto total_mix_in =
-            dirty_header.mixer_count * sizeof(MixInfo::InParams) + sizeof(MixInfo::DirtyHeader);
-
-        if (input_header.size.mixer != total_mix_in) {
-            LOG_ERROR(Audio, "Mixer is an invalid size, expecting 0x{:X} but got 0x{:X}",
-                      total_mix_in, input_header.size.mixer);
-            return AudioCommon::Audren::ERR_INVALID_PARAMETERS;
-        }
-
-        if (dirty_header.mixer_count != 0) {
-            mix_in_params.resize(dirty_header.mixer_count);
-            std::memcpy(mix_in_params.data(), in_params.data() + input_offset,
-                        mix_in_params.size() * sizeof(MixInfo::InParams));
-            input_offset += mix_in_params.size() * sizeof(MixInfo::InParams);
-        }
-    }
-
-    // Get our total input count
-    const auto mix_count = mix_in_params.size();
-
-    if (!behavior_info.IsMixInParameterDirtyOnlyUpdateSupported()) {
-        // Only verify our buffer count if we're not dirty
-        std::size_t total_buffer_count{};
-        for (std::size_t i = 0; i < mix_count; i++) {
-            const auto& in = mix_in_params[i];
-            total_buffer_count += in.buffer_count;
-            if (static_cast<std::size_t>(in.dest_mix_id) > mix_count &&
-                in.dest_mix_id != AudioCommon::NO_MIX && in.mix_id != AudioCommon::FINAL_MIX) {
-                LOG_ERROR(
-                    Audio,
-                    "Invalid mix destination, mix_id={:X}, dest_mix_id={:X}, mix_buffer_count={:X}",
-                    in.mix_id, in.dest_mix_id, mix_buffer_count);
-                return AudioCommon::Audren::ERR_INVALID_PARAMETERS;
-            }
-        }
-
-        if (total_buffer_count > mix_buffer_count) {
-            LOG_ERROR(Audio,
-                      "Too many mix buffers used! mix_buffer_count={:X}, requesting_buffers={:X}",
-                      mix_buffer_count, total_buffer_count);
-            return AudioCommon::Audren::ERR_INVALID_PARAMETERS;
-        }
-    }
-
-    if (mix_buffer_count == 0) {
-        LOG_ERROR(Audio, "No mix buffers!");
-        return AudioCommon::Audren::ERR_INVALID_PARAMETERS;
-    }
-
-    bool should_sort = false;
-    for (std::size_t i = 0; i < mix_count; i++) {
-        const auto& mix_in = mix_in_params[i];
-        std::size_t target_mix{};
-        if (behavior_info.IsMixInParameterDirtyOnlyUpdateSupported()) {
-            target_mix = mix_in.mix_id;
-        } else {
-            // Non dirty supported games just use i instead of the actual mix_id
-            target_mix = i;
-        }
-        auto& mix_info = mix_context.GetInfo(target_mix);
-        auto& mix_info_params = mix_info.GetInParams();
-        if (mix_info_params.in_use != mix_in.in_use) {
-            mix_info_params.in_use = mix_in.in_use;
-            mix_info.ResetEffectProcessingOrder();
-            should_sort = true;
-        }
-
-        if (mix_in.in_use) {
-            should_sort |= mix_info.Update(mix_context.GetEdgeMatrix(), mix_in, behavior_info,
-                                           splitter_context, effect_context);
-        }
-    }
-
-    if (should_sort && behavior_info.IsSplitterSupported()) {
-        // Sort our splitter data
-        if (!mix_context.TsortInfo(splitter_context)) {
-            return AudioCommon::Audren::ERR_SPLITTER_SORT_FAILED;
-        }
-    }
-
-    // TODO(ogniK): Sort when splitter is suppoorted
-
-    return ResultSuccess;
-}
-
-bool InfoUpdater::UpdateSinks(SinkContext& sink_context) {
-    const auto sink_count = sink_context.GetCount();
-    std::vector<SinkInfo::InParams> sink_in_params(sink_count);
-    const auto total_sink_in = sink_count * sizeof(SinkInfo::InParams);
-
-    if (input_header.size.sink != total_sink_in) {
-        LOG_ERROR(Audio, "Sinks are an invalid size, expecting 0x{:X} but got 0x{:X}",
-                  total_sink_in, input_header.size.effect);
-        return false;
-    }
-
-    if (!AudioCommon::CanConsumeBuffer(in_params.size(), input_offset, total_sink_in)) {
-        LOG_ERROR(Audio, "Buffer is an invalid size!");
-        return false;
-    }
-
-    std::memcpy(sink_in_params.data(), in_params.data() + input_offset, total_sink_in);
-    input_offset += total_sink_in;
-
-    // TODO(ogniK): Properly update sinks
-    if (!sink_in_params.empty()) {
-        sink_context.UpdateMainSink(sink_in_params[0]);
-    }
-
-    output_header.size.sink = static_cast<u32>(0x20 * sink_count);
-    output_offset += 0x20 * sink_count;
-    return true;
-}
-
-bool InfoUpdater::UpdatePerformanceBuffer() {
-    output_header.size.performance = 0x10;
-    output_offset += 0x10;
-    return true;
-}
-
-bool InfoUpdater::UpdateErrorInfo([[maybe_unused]] BehaviorInfo& in_behavior_info) {
-    const auto total_beahvior_info_out = sizeof(BehaviorInfo::OutParams);
-
-    if (!AudioCommon::CanConsumeBuffer(out_params.size(), output_offset, total_beahvior_info_out)) {
-        LOG_ERROR(Audio, "Buffer is an invalid size!");
-        return false;
-    }
-
-    BehaviorInfo::OutParams behavior_info_out{};
-    behavior_info.CopyErrorInfo(behavior_info_out);
-
-    std::memcpy(out_params.data() + output_offset, &behavior_info_out, total_beahvior_info_out);
-    output_offset += total_beahvior_info_out;
-    output_header.size.behavior = total_beahvior_info_out;
-
-    return true;
-}
-
-struct RendererInfo {
-    u64_le elasped_frame_count{};
-    INSERT_PADDING_WORDS(2);
-};
-static_assert(sizeof(RendererInfo) == 0x10, "RendererInfo is an invalid size");
-
-bool InfoUpdater::UpdateRendererInfo(std::size_t elapsed_frame_count) {
-    const auto total_renderer_info_out = sizeof(RendererInfo);
-    if (!AudioCommon::CanConsumeBuffer(out_params.size(), output_offset, total_renderer_info_out)) {
-        LOG_ERROR(Audio, "Buffer is an invalid size!");
-        return false;
-    }
-    RendererInfo out{};
-    out.elasped_frame_count = elapsed_frame_count;
-    std::memcpy(out_params.data() + output_offset, &out, total_renderer_info_out);
-    output_offset += total_renderer_info_out;
-    output_header.size.render_info = total_renderer_info_out;
-
-    return true;
-}
-
-bool InfoUpdater::CheckConsumedSize() const {
-    if (output_offset != out_params.size()) {
-        LOG_ERROR(Audio, "Output is not consumed! Consumed {}, but requires {}. {} bytes remaining",
-                  output_offset, out_params.size(), out_params.size() - output_offset);
-        return false;
-    }
-    /*if (input_offset != in_params.size()) {
-        LOG_ERROR(Audio, "Input is not consumed!");
-        return false;
-    }*/
-    return true;
-}
-
-bool InfoUpdater::WriteOutputHeader() {
-    if (!AudioCommon::CanConsumeBuffer(out_params.size(), 0,
-                                       sizeof(AudioCommon::UpdateDataHeader))) {
-        LOG_ERROR(Audio, "Buffer is an invalid size!");
-        return false;
-    }
-    output_header.revision = AudioCommon::CURRENT_PROCESS_REVISION;
-    const auto& sz = output_header.size;
-    output_header.total_size += sz.behavior + sz.memory_pool + sz.voice +
-                                sz.voice_channel_resource + sz.effect + sz.mixer + sz.sink +
-                                sz.performance + sz.splitter + sz.render_info;
-
-    std::memcpy(out_params.data(), &output_header, sizeof(AudioCommon::UpdateDataHeader));
-    return true;
-}
-
-} // namespace AudioCore

src/audio_core/info_updater.h

@@ -1,57 +0,0 @@
-// SPDX-FileCopyrightText: Copyright 2020 yuzu Emulator Project
-// SPDX-License-Identifier: GPL-2.0-or-later
-
-#pragma once
-
-#include <vector>
-#include "audio_core/common.h"
-#include "common/common_types.h"
-
-namespace AudioCore {
-
-class BehaviorInfo;
-class ServerMemoryPoolInfo;
-class VoiceContext;
-class EffectContext;
-class MixContext;
-class SinkContext;
-class SplitterContext;
-
-class InfoUpdater {
-public:
-    // TODO(ogniK): Pass process handle when we support it
-    InfoUpdater(const std::vector<u8>& in_params_, std::vector<u8>& out_params_,
-                BehaviorInfo& behavior_info_);
-    ~InfoUpdater();
-
-    bool UpdateBehaviorInfo(BehaviorInfo& in_behavior_info);
-    bool UpdateMemoryPools(std::vector<ServerMemoryPoolInfo>& memory_pool_info);
-    bool UpdateVoiceChannelResources(VoiceContext& voice_context);
-    bool UpdateVoices(VoiceContext& voice_context,
-                      std::vector<ServerMemoryPoolInfo>& memory_pool_info,
-                      VAddr audio_codec_dsp_addr);
-    bool UpdateEffects(EffectContext& effect_context, bool is_active);
-    bool UpdateSplitterInfo(SplitterContext& splitter_context);
-    Result UpdateMixes(MixContext& mix_context, std::size_t mix_buffer_count,
-                       SplitterContext& splitter_context, EffectContext& effect_context);
-    bool UpdateSinks(SinkContext& sink_context);
-    bool UpdatePerformanceBuffer();
-    bool UpdateErrorInfo(BehaviorInfo& in_behavior_info);
-    bool UpdateRendererInfo(std::size_t elapsed_frame_count);
-    bool CheckConsumedSize() const;
-
-    bool WriteOutputHeader();
-
-private:
-    const std::vector<u8>& in_params;
-    std::vector<u8>& out_params;
-    BehaviorInfo& behavior_info;
-
-    AudioCommon::UpdateDataHeader input_header{};
-    AudioCommon::UpdateDataHeader output_header{};
-
-    std::size_t input_offset{sizeof(AudioCommon::UpdateDataHeader)};
-    std::size_t output_offset{sizeof(AudioCommon::UpdateDataHeader)};
-};
-
-} // namespace AudioCore

src/audio_core/memory_pool.cpp

@@ -1,60 +0,0 @@
-
-// SPDX-FileCopyrightText: Copyright 2020 yuzu Emulator Project
-// SPDX-License-Identifier: GPL-2.0-or-later
-
-#include "audio_core/memory_pool.h"
-#include "common/logging/log.h"
-
-namespace AudioCore {
-
-ServerMemoryPoolInfo::ServerMemoryPoolInfo() = default;
-ServerMemoryPoolInfo::~ServerMemoryPoolInfo() = default;
-
-bool ServerMemoryPoolInfo::Update(const InParams& in_params, OutParams& out_params) {
-    // Our state does not need to be changed
-    if (in_params.state != State::RequestAttach && in_params.state != State::RequestDetach) {
-        return true;
-    }
-
-    // Address or size is null
-    if (in_params.address == 0 || in_params.size == 0) {
-        LOG_ERROR(Audio, "Memory pool address or size is zero! address={:X}, size={:X}",
-                  in_params.address, in_params.size);
-        return false;
-    }
-
-    // Address or size is not aligned
-    if ((in_params.address % 0x1000) != 0 || (in_params.size % 0x1000) != 0) {
-        LOG_ERROR(Audio, "Memory pool address or size is not aligned! address={:X}, size={:X}",
-                  in_params.address, in_params.size);
-        return false;
-    }
-
-    if (in_params.state == State::RequestAttach) {
-        cpu_address = in_params.address;
-        size = in_params.size;
-        used = true;
-        out_params.state = State::Attached;
-    } else {
-        // Unexpected address
-        if (cpu_address != in_params.address) {
-            LOG_ERROR(Audio, "Memory pool address differs! Expecting {:X} but address is {:X}",
-                      cpu_address, in_params.address);
-            return false;
-        }
-
-        if (size != in_params.size) {
-            LOG_ERROR(Audio, "Memory pool size differs! Expecting {:X} but size is {:X}", size,
-                      in_params.size);
-            return false;
-        }
-
-        cpu_address = 0;
-        size = 0;
-        used = false;
-        out_params.state = State::Detached;
-    }
-    return true;
-}
-
-} // namespace AudioCore

src/audio_core/memory_pool.h

@@ -1,51 +0,0 @@
-// SPDX-FileCopyrightText: Copyright 2020 yuzu Emulator Project
-// SPDX-License-Identifier: GPL-2.0-or-later
-
-#pragma once
-
-#include "common/common_funcs.h"
-#include "common/common_types.h"
-#include "common/swap.h"
-
-namespace AudioCore {
-
-class ServerMemoryPoolInfo {
-public:
-    ServerMemoryPoolInfo();
-    ~ServerMemoryPoolInfo();
-
-    enum class State : u32_le {
-        Invalid = 0x0,
-        Aquired = 0x1,
-        RequestDetach = 0x2,
-        Detached = 0x3,
-        RequestAttach = 0x4,
-        Attached = 0x5,
-        Released = 0x6,
-    };
-
-    struct InParams {
-        u64_le address{};
-        u64_le size{};
-        State state{};
-        INSERT_PADDING_WORDS(3);
-    };
-    static_assert(sizeof(InParams) == 0x20, "InParams are an invalid size");
-
-    struct OutParams {
-        State state{};
-        INSERT_PADDING_WORDS(3);
-    };
-    static_assert(sizeof(OutParams) == 0x10, "OutParams are an invalid size");
-
-    bool Update(const InParams& in_params, OutParams& out_params);
-
-private:
-    // There's another entry here which is the DSP address, however since we're not talking to the
-    // DSP we can just use the same address provided by the guest without needing to remap
-    u64_le cpu_address{};
-    u64_le size{};
-    bool used{};
-};
-
-} // namespace AudioCore

src/audio_core/mix_context.cpp

@@ -1,297 +0,0 @@
-// SPDX-FileCopyrightText: Copyright 2020 yuzu Emulator Project
-// SPDX-License-Identifier: GPL-2.0-or-later
-
-#include <algorithm>
-
-#include "audio_core/behavior_info.h"
-#include "audio_core/common.h"
-#include "audio_core/effect_context.h"
-#include "audio_core/mix_context.h"
-#include "audio_core/splitter_context.h"
-
-namespace AudioCore {
-MixContext::MixContext() = default;
-MixContext::~MixContext() = default;
-
-void MixContext::Initialize(const BehaviorInfo& behavior_info, std::size_t mix_count,
-                            std::size_t effect_count) {
-    info_count = mix_count;
-    infos.resize(info_count);
-    auto& final_mix = GetInfo(AudioCommon::FINAL_MIX);
-    final_mix.GetInParams().mix_id = AudioCommon::FINAL_MIX;
-    sorted_info.reserve(infos.size());
-    for (auto& info : infos) {
-        sorted_info.push_back(&info);
-    }
-
-    for (auto& info : infos) {
-        info.SetEffectCount(effect_count);
-    }
-
-    // Only initialize our edge matrix and node states if splitters are supported
-    if (behavior_info.IsSplitterSupported()) {
-        node_states.Initialize(mix_count);
-        edge_matrix.Initialize(mix_count);
-    }
-}
-
-void MixContext::UpdateDistancesFromFinalMix() {
-    // Set all distances to be invalid
-    for (std::size_t i = 0; i < info_count; i++) {
-        GetInfo(i).GetInParams().final_mix_distance = AudioCommon::NO_FINAL_MIX;
-    }
-
-    for (std::size_t i = 0; i < info_count; i++) {
-        auto& info = GetInfo(i);
-        auto& in_params = info.GetInParams();
-        // Populate our sorted info
-        sorted_info[i] = &info;
-
-        if (!in_params.in_use) {
-            continue;
-        }
-
-        auto mix_id = in_params.mix_id;
-        // Needs to be referenced out of scope
-        s32 distance_to_final_mix{AudioCommon::FINAL_MIX};
-        for (; distance_to_final_mix < static_cast<s32>(info_count); distance_to_final_mix++) {
-            if (mix_id == AudioCommon::FINAL_MIX) {
-                // If we're at the final mix, we're done
-                break;
-            } else if (mix_id == AudioCommon::NO_MIX) {
-                // If we have no more mix ids, we're done
-                distance_to_final_mix = AudioCommon::NO_FINAL_MIX;
-                break;
-            } else {
-                const auto& dest_mix = GetInfo(mix_id);
-                const auto dest_mix_distance = dest_mix.GetInParams().final_mix_distance;
-
-                if (dest_mix_distance == AudioCommon::NO_FINAL_MIX) {
-                    // If our current mix isn't pointing to a final mix, follow through
-                    mix_id = dest_mix.GetInParams().dest_mix_id;
-                } else {
-                    // Our current mix + 1 = final distance
-                    distance_to_final_mix = dest_mix_distance + 1;
-                    break;
-                }
-            }
-        }
-
-        // If we're out of range for our distance, mark it as no final mix
-        if (distance_to_final_mix >= static_cast<s32>(info_count)) {
-            distance_to_final_mix = AudioCommon::NO_FINAL_MIX;
-        }
-
-        in_params.final_mix_distance = distance_to_final_mix;
-    }
-}
-
-void MixContext::CalcMixBufferOffset() {
-    s32 offset{};
-    for (std::size_t i = 0; i < info_count; i++) {
-        auto& info = GetSortedInfo(i);
-        auto& in_params = info.GetInParams();
-        if (in_params.in_use) {
-            // Only update if in use
-            in_params.buffer_offset = offset;
-            offset += in_params.buffer_count;
-        }
-    }
-}
-
-void MixContext::SortInfo() {
-    // Get the distance to the final mix
-    UpdateDistancesFromFinalMix();
-
-    // Sort based on the distance to the final mix
-    std::sort(sorted_info.begin(), sorted_info.end(),
-              [](const ServerMixInfo* lhs, const ServerMixInfo* rhs) {
-                  return lhs->GetInParams().final_mix_distance >
-                         rhs->GetInParams().final_mix_distance;
-              });
-
-    // Calculate the mix buffer offset
-    CalcMixBufferOffset();
-}
-
-bool MixContext::TsortInfo(SplitterContext& splitter_context) {
-    // If we're not using mixes, just calculate the mix buffer offset
-    if (!splitter_context.UsingSplitter()) {
-        CalcMixBufferOffset();
-        return true;
-    }
-    // Sort our node states
-    if (!node_states.Tsort(edge_matrix)) {
-        return false;
-    }
-
-    // Get our sorted list
-    const auto sorted_list = node_states.GetIndexList();
-    std::size_t info_id{};
-    for (auto itr = sorted_list.rbegin(); itr != sorted_list.rend(); ++itr) {
-        // Set our sorted info
-        sorted_info[info_id++] = &GetInfo(*itr);
-    }
-
-    // Calculate the mix buffer offset
-    CalcMixBufferOffset();
-    return true;
-}
-
-std::size_t MixContext::GetCount() const {
-    return info_count;
-}
-
-ServerMixInfo& MixContext::GetInfo(std::size_t i) {
-    ASSERT(i < info_count);
-    return infos.at(i);
-}
-
-const ServerMixInfo& MixContext::GetInfo(std::size_t i) const {
-    ASSERT(i < info_count);
-    return infos.at(i);
-}
-
-ServerMixInfo& MixContext::GetSortedInfo(std::size_t i) {
-    ASSERT(i < info_count);
-    return *sorted_info.at(i);
-}
-
-const ServerMixInfo& MixContext::GetSortedInfo(std::size_t i) const {
-    ASSERT(i < info_count);
-    return *sorted_info.at(i);
-}
-
-ServerMixInfo& MixContext::GetFinalMixInfo() {
-    return infos.at(AudioCommon::FINAL_MIX);
-}
-
-const ServerMixInfo& MixContext::GetFinalMixInfo() const {
-    return infos.at(AudioCommon::FINAL_MIX);
-}
-
-EdgeMatrix& MixContext::GetEdgeMatrix() {
-    return edge_matrix;
-}
-
-const EdgeMatrix& MixContext::GetEdgeMatrix() const {
-    return edge_matrix;
-}
-
-ServerMixInfo::ServerMixInfo() {
-    Cleanup();
-}
-ServerMixInfo::~ServerMixInfo() = default;
-
-const ServerMixInfo::InParams& ServerMixInfo::GetInParams() const {
-    return in_params;
-}
-
-ServerMixInfo::InParams& ServerMixInfo::GetInParams() {
-    return in_params;
-}
-
-bool ServerMixInfo::Update(EdgeMatrix& edge_matrix, const MixInfo::InParams& mix_in,
-                           BehaviorInfo& behavior_info, SplitterContext& splitter_context,
-                           EffectContext& effect_context) {
-    in_params.volume = mix_in.volume;
-    in_params.sample_rate = mix_in.sample_rate;
-    in_params.buffer_count = mix_in.buffer_count;
-    in_params.in_use = mix_in.in_use;
-    in_params.mix_id = mix_in.mix_id;
-    in_params.node_id = mix_in.node_id;
-    for (std::size_t i = 0; i < mix_in.mix_volume.size(); i++) {
-        std::copy(mix_in.mix_volume[i].begin(), mix_in.mix_volume[i].end(),
-                  in_params.mix_volume[i].begin());
-    }
-
-    bool require_sort = false;
-
-    if (behavior_info.IsSplitterSupported()) {
-        require_sort = UpdateConnection(edge_matrix, mix_in, splitter_context);
-    } else {
-        in_params.dest_mix_id = mix_in.dest_mix_id;
-        in_params.splitter_id = AudioCommon::NO_SPLITTER;
-    }
-
-    ResetEffectProcessingOrder();
-    const auto effect_count = effect_context.GetCount();
-    for (std::size_t i = 0; i < effect_count; i++) {
-        auto* effect_info = effect_context.GetInfo(i);
-        if (effect_info->GetMixID() == in_params.mix_id) {
-            effect_processing_order[effect_info->GetProcessingOrder()] = static_cast<s32>(i);
-        }
-    }
-
-    // TODO(ogniK): Update effect processing order
-    return require_sort;
-}
-
-bool ServerMixInfo::HasAnyConnection() const {
-    return in_params.splitter_id != AudioCommon::NO_SPLITTER ||
-           in_params.mix_id != AudioCommon::NO_MIX;
-}
-
-void ServerMixInfo::Cleanup() {
-    in_params.volume = 0.0f;
-    in_params.sample_rate = 0;
-    in_params.buffer_count = 0;
-    in_params.in_use = false;
-    in_params.mix_id = AudioCommon::NO_MIX;
-    in_params.node_id = 0;
-    in_params.buffer_offset = 0;
-    in_params.dest_mix_id = AudioCommon::NO_MIX;
-    in_params.splitter_id = AudioCommon::NO_SPLITTER;
-    std::memset(in_params.mix_volume.data(), 0, sizeof(float) * in_params.mix_volume.size());
-}
-
-void ServerMixInfo::SetEffectCount(std::size_t count) {
-    effect_processing_order.resize(count);
-    ResetEffectProcessingOrder();
-}
-
-void ServerMixInfo::ResetEffectProcessingOrder() {
-    for (auto& order : effect_processing_order) {
-        order = AudioCommon::NO_EFFECT_ORDER;
-    }
-}
-
-s32 ServerMixInfo::GetEffectOrder(std::size_t i) const {
-    return effect_processing_order.at(i);
-}
-
-bool ServerMixInfo::UpdateConnection(EdgeMatrix& edge_matrix, const MixInfo::InParams& mix_in,
-                                     SplitterContext& splitter_context) {
-    // Mixes are identical
-    if (in_params.dest_mix_id == mix_in.dest_mix_id &&
-        in_params.splitter_id == mix_in.splitter_id &&
-        ((in_params.splitter_id == AudioCommon::NO_SPLITTER) ||
-         !splitter_context.GetInfo(in_params.splitter_id).HasNewConnection())) {
-        return false;
-    }
-    // Remove current edges for mix id
-    edge_matrix.RemoveEdges(in_params.mix_id);
-    if (mix_in.dest_mix_id != AudioCommon::NO_MIX) {
-        // If we have a valid destination mix id, set our edge matrix
-        edge_matrix.Connect(in_params.mix_id, mix_in.dest_mix_id);
-    } else if (mix_in.splitter_id != AudioCommon::NO_SPLITTER) {
-        // Recurse our splitter linked and set our edges
-        auto& splitter_info = splitter_context.GetInfo(mix_in.splitter_id);
-        const auto length = splitter_info.GetLength();
-        for (s32 i = 0; i < length; i++) {
-            const auto* splitter_destination =
-                splitter_context.GetDestinationData(mix_in.splitter_id, i);
-            if (splitter_destination == nullptr) {
-                continue;
-            }
-            if (splitter_destination->ValidMixId()) {
-                edge_matrix.Connect(in_params.mix_id, splitter_destination->GetMixId());
-            }
-        }
-    }
-    in_params.dest_mix_id = mix_in.dest_mix_id;
-    in_params.splitter_id = mix_in.splitter_id;
-    return true;
-}
-
-} // namespace AudioCore

src/audio_core/mix_context.h

@@ -1,113 +0,0 @@
-// SPDX-FileCopyrightText: Copyright 2020 yuzu Emulator Project
-// SPDX-License-Identifier: GPL-2.0-or-later
-
-#pragma once
-
-#include <array>
-#include <vector>
-#include "audio_core/common.h"
-#include "audio_core/splitter_context.h"
-#include "common/common_funcs.h"
-#include "common/common_types.h"
-
-namespace AudioCore {
-class BehaviorInfo;
-class EffectContext;
-
-class MixInfo {
-public:
-    struct DirtyHeader {
-        u32_le magic{};
-        u32_le mixer_count{};
-        INSERT_PADDING_BYTES(0x18);
-    };
-    static_assert(sizeof(DirtyHeader) == 0x20, "MixInfo::DirtyHeader is an invalid size");
-
-    struct InParams {
-        float_le volume{};
-        s32_le sample_rate{};
-        s32_le buffer_count{};
-        bool in_use{};
-        INSERT_PADDING_BYTES(3);
-        s32_le mix_id{};
-        s32_le effect_count{};
-        u32_le node_id{};
-        INSERT_PADDING_WORDS(2);
-        std::array<std::array<float_le, AudioCommon::MAX_MIX_BUFFERS>, AudioCommon::MAX_MIX_BUFFERS>
-            mix_volume{};
-        s32_le dest_mix_id{};
-        s32_le splitter_id{};
-        INSERT_PADDING_WORDS(1);
-    };
-    static_assert(sizeof(MixInfo::InParams) == 0x930, "MixInfo::InParams is an invalid size");
-};
-
-class ServerMixInfo {
-public:
-    struct InParams {
-        float volume{};
-        s32 sample_rate{};
-        s32 buffer_count{};
-        bool in_use{};
-        s32 mix_id{};
-        u32 node_id{};
-        std::array<std::array<float_le, AudioCommon::MAX_MIX_BUFFERS>, AudioCommon::MAX_MIX_BUFFERS>
-            mix_volume{};
-        s32 dest_mix_id{};
-        s32 splitter_id{};
-        s32 buffer_offset{};
-        s32 final_mix_distance{};
-    };
-    ServerMixInfo();
-    ~ServerMixInfo();
-
-    [[nodiscard]] const ServerMixInfo::InParams& GetInParams() const;
-    [[nodiscard]] ServerMixInfo::InParams& GetInParams();
-
-    bool Update(EdgeMatrix& edge_matrix, const MixInfo::InParams& mix_in,
-                BehaviorInfo& behavior_info, SplitterContext& splitter_context,
-                EffectContext& effect_context);
-    [[nodiscard]] bool HasAnyConnection() const;
-    void Cleanup();
-    void SetEffectCount(std::size_t count);
-    void ResetEffectProcessingOrder();
-    [[nodiscard]] s32 GetEffectOrder(std::size_t i) const;
-
-private:
-    std::vector<s32> effect_processing_order;
-    InParams in_params{};
-    bool UpdateConnection(EdgeMatrix& edge_matrix, const MixInfo::InParams& mix_in,
-                          SplitterContext& splitter_context);
-};
-
-class MixContext {
-public:
-    MixContext();
-    ~MixContext();
-
-    void Initialize(const BehaviorInfo& behavior_info, std::size_t mix_count,
-                    std::size_t effect_count);
-    void SortInfo();
-    bool TsortInfo(SplitterContext& splitter_context);
-
-    [[nodiscard]] std::size_t GetCount() const;
-    [[nodiscard]] ServerMixInfo& GetInfo(std::size_t i);
-    [[nodiscard]] const ServerMixInfo& GetInfo(std::size_t i) const;
-    [[nodiscard]] ServerMixInfo& GetSortedInfo(std::size_t i);
-    [[nodiscard]] const ServerMixInfo& GetSortedInfo(std::size_t i) const;
-    [[nodiscard]] ServerMixInfo& GetFinalMixInfo();
-    [[nodiscard]] const ServerMixInfo& GetFinalMixInfo() const;
-    [[nodiscard]] EdgeMatrix& GetEdgeMatrix();
-    [[nodiscard]] const EdgeMatrix& GetEdgeMatrix() const;
-
-private:
-    void CalcMixBufferOffset();
-    void UpdateDistancesFromFinalMix();
-
-    NodeStates node_states{};
-    EdgeMatrix edge_matrix{};
-    std::size_t info_count{};
-    std::vector<ServerMixInfo> infos{};
-    std::vector<ServerMixInfo*> sorted_info{};
-};
-} // namespace AudioCore

src/audio_core/null_sink.h

@@ -1,32 +0,0 @@
-// SPDX-FileCopyrightText: Copyright 2018 yuzu Emulator Project
-// SPDX-License-Identifier: GPL-2.0-or-later
-
-#pragma once
-
-#include "audio_core/sink.h"
-
-namespace AudioCore {
-
-class NullSink final : public Sink {
-public:
-    explicit NullSink(std::string_view) {}
-    ~NullSink() override = default;
-
-    SinkStream& AcquireSinkStream(u32 /*sample_rate*/, u32 /*num_channels*/,
-                                  const std::string& /*name*/) override {
-        return null_sink_stream;
-    }
-
-private:
-    struct NullSinkStreamImpl final : SinkStream {
-        void EnqueueSamples(u32 /*num_channels*/, const std::vector<s16>& /*samples*/) override {}
-
-        std::size_t SamplesInQueue(u32 /*num_channels*/) const override {
-            return 0;
-        }
-
-        void Flush() override {}
-    } null_sink_stream;
-};
-
-} // namespace AudioCore

src/audio_core/out/audio_out.cpp

@@ -0,0 +1,100 @@
+// SPDX-FileCopyrightText: Copyright 2022 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include "audio_core/audio_out_manager.h"
+#include "audio_core/out/audio_out.h"
+#include "core/hle/kernel/k_event.h"
+
+namespace AudioCore::AudioOut {
+
+Out::Out(Core::System& system_, Manager& manager_, Kernel::KEvent* event_, size_t session_id_)
+    : manager{manager_}, parent_mutex{manager.mutex}, event{event_}, system{system_, event,
+                                                                            session_id_} {}
+
+void Out::Free() {
+    std::scoped_lock l{parent_mutex};
+    manager.ReleaseSessionId(system.GetSessionId());
+}
+
+System& Out::GetSystem() {
+    return system;
+}
+
+AudioOut::State Out::GetState() {
+    std::scoped_lock l{parent_mutex};
+    return system.GetState();
+}
+
+Result Out::StartSystem() {
+    std::scoped_lock l{parent_mutex};
+    return system.Start();
+}
+
+void Out::StartSession() {
+    std::scoped_lock l{parent_mutex};
+    system.StartSession();
+}
+
+Result Out::StopSystem() {
+    std::scoped_lock l{parent_mutex};
+    return system.Stop();
+}
+
+Result Out::AppendBuffer(const AudioOutBuffer& buffer, const u64 tag) {
+    std::scoped_lock l{parent_mutex};
+
+    if (system.AppendBuffer(buffer, tag)) {
+        return ResultSuccess;
+    }
+    return Service::Audio::ERR_BUFFER_COUNT_EXCEEDED;
+}
+
+void Out::ReleaseAndRegisterBuffers() {
+    std::scoped_lock l{parent_mutex};
+    if (system.GetState() == State::Started) {
+        system.ReleaseBuffers();
+        system.RegisterBuffers();
+    }
+}
+
+bool Out::FlushAudioOutBuffers() {
+    std::scoped_lock l{parent_mutex};
+    return system.FlushAudioOutBuffers();
+}
+
+u32 Out::GetReleasedBuffers(std::span<u64> tags) {
+    std::scoped_lock l{parent_mutex};
+    return system.GetReleasedBuffers(tags);
+}
+
+Kernel::KReadableEvent& Out::GetBufferEvent() {
+    std::scoped_lock l{parent_mutex};
+    return event->GetReadableEvent();
+}
+
+f32 Out::GetVolume() {
+    std::scoped_lock l{parent_mutex};
+    return system.GetVolume();
+}
+
+void Out::SetVolume(const f32 volume) {
+    std::scoped_lock l{parent_mutex};
+    system.SetVolume(volume);
+}
+
+bool Out::ContainsAudioBuffer(const u64 tag) {
+    std::scoped_lock l{parent_mutex};
+    return system.ContainsAudioBuffer(tag);
+}
+
+u32 Out::GetBufferCount() {
+    std::scoped_lock l{parent_mutex};
+    return system.GetBufferCount();
+}
+
+u64 Out::GetPlayedSampleCount() {
+    std::scoped_lock l{parent_mutex};
+    return system.GetPlayedSampleCount();
+}
+
+} // namespace AudioCore::AudioOut

src/audio_core/out/audio_out.h

@@ -0,0 +1,147 @@
+// SPDX-FileCopyrightText: Copyright 2022 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#include <mutex>
+
+#include "audio_core/out/audio_out_system.h"
+
+namespace Core {
+class System;
+}
+
+namespace Kernel {
+class KEvent;
+class KReadableEvent;
+} // namespace Kernel
+
+namespace AudioCore::AudioOut {
+class Manager;
+
+/**
+ * Interface between the service and audio out system. Mainly responsible for forwarding service
+ * calls to the system.
+ */
+class Out {
+public:
+    explicit Out(Core::System& system, Manager& manager, Kernel::KEvent* event, size_t session_id);
+
+    /**
+     * Free this audio out from the audio out manager.
+     */
+    void Free();
+
+    /**
+     * Get this audio out's system.
+     */
+    System& GetSystem();
+
+    /**
+     * Get the current state.
+     *
+     * @return Started or Stopped.
+     */
+    AudioOut::State GetState();
+
+    /**
+     * Start the system
+     *
+     * @return Result code
+     */
+    Result StartSystem();
+
+    /**
+     * Start the system's device session.
+     */
+    void StartSession();
+
+    /**
+     * Stop the system.
+     *
+     * @return Result code
+     */
+    Result StopSystem();
+
+    /**
+     * Append a new buffer to the system, the buffer event will be signalled when it is filled.
+     *
+     * @param buffer - The new buffer to append.
+     * @param tag    - Unique tag for this buffer.
+     * @return Result code.
+     */
+    Result AppendBuffer(const AudioOutBuffer& buffer, u64 tag);
+
+    /**
+     * Release all completed buffers, and register any appended.
+     */
+    void ReleaseAndRegisterBuffers();
+
+    /**
+     * Flush all buffers.
+     */
+    bool FlushAudioOutBuffers();
+
+    /**
+     * Get all of the currently released buffers.
+     *
+     * @param tags - Output container for the buffer tags which were released.
+     * @return The number of buffers released.
+     */
+    u32 GetReleasedBuffers(std::span<u64> tags);
+
+    /**
+     * Get the buffer event for this audio out, this event will be signalled when a buffer is
+     * filled.
+     * @return The buffer event.
+     */
+    Kernel::KReadableEvent& GetBufferEvent();
+
+    /**
+     * Get the current system volume.
+     *
+     * @return The current volume.
+     */
+    f32 GetVolume();
+
+    /**
+     * Set the system volume.
+     *
+     * @param volume - The volume to set.
+     */
+    void SetVolume(f32 volume);
+
+    /**
+     * Check if a buffer is in the system.
+     *
+     * @param tag - The tag to search for.
+     * @return True if the buffer is in the system, otherwise false.
+     */
+    bool ContainsAudioBuffer(u64 tag);
+
+    /**
+     * Get the maximum number of buffers.
+     *
+     * @return The maximum number of buffers.
+     */
+    u32 GetBufferCount();
+
+    /**
+     * Get the total played sample count for this audio out.
+     *
+     * @return The played sample count.
+     */
+    u64 GetPlayedSampleCount();
+
+private:
+    /// The AudioOut::Manager this audio out is registered with
+    Manager& manager;
+    /// Manager's mutex
+    std::recursive_mutex& parent_mutex;
+    /// Buffer event, signalled when buffers are ready to be released
+    Kernel::KEvent* event;
+    /// Main audio out system
+    System system;
+};
+
+} // namespace AudioCore::AudioOut

src/audio_core/out/audio_out_system.cpp

@@ -0,0 +1,207 @@
+// SPDX-FileCopyrightText: Copyright 2022 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include <mutex>
+
+#include "audio_core/audio_event.h"
+#include "audio_core/audio_manager.h"
+#include "audio_core/out/audio_out_system.h"
+#include "common/logging/log.h"
+#include "core/core.h"
+#include "core/core_timing.h"
+#include "core/hle/kernel/k_event.h"
+
+namespace AudioCore::AudioOut {
+
+System::System(Core::System& system_, Kernel::KEvent* event_, size_t session_id_)
+    : system{system_}, buffer_event{event_},
+      session_id{session_id_}, session{std::make_unique<DeviceSession>(system_)} {}
+
+System::~System() {
+    Finalize();
+}
+
+void System::Finalize() {
+    Stop();
+    session->Finalize();
+    buffer_event->GetWritableEvent().Signal();
+}
+
+std::string_view System::GetDefaultOutputDeviceName() {
+    return "DeviceOut";
+}
+
+Result System::IsConfigValid(std::string_view device_name, const AudioOutParameter& in_params) {
+    if ((device_name.size() > 0) && (device_name != GetDefaultOutputDeviceName())) {
+        return Service::Audio::ERR_INVALID_DEVICE_NAME;
+    }
+
+    if (in_params.sample_rate != TargetSampleRate && in_params.sample_rate > 0) {
+        return Service::Audio::ERR_INVALID_SAMPLE_RATE;
+    }
+
+    if (in_params.channel_count == 0 || in_params.channel_count == 2 ||
+        in_params.channel_count == 6) {
+        return ResultSuccess;
+    }
+
+    return Service::Audio::ERR_INVALID_CHANNEL_COUNT;
+}
+
+Result System::Initialize(std::string& device_name, const AudioOutParameter& in_params, u32 handle_,
+                          u64& applet_resource_user_id_) {
+    auto result = IsConfigValid(device_name, in_params);
+    if (result.IsError()) {
+        return result;
+    }
+
+    handle = handle_;
+    applet_resource_user_id = applet_resource_user_id_;
+    if (device_name.empty() || device_name[0] == '\0') {
+        name = std::string(GetDefaultOutputDeviceName());
+    } else {
+        name = std::move(device_name);
+    }
+
+    sample_rate = TargetSampleRate;
+    sample_format = SampleFormat::PcmInt16;
+    channel_count = in_params.channel_count <= 2 ? 2 : 6;
+    volume = 1.0f;
+    return ResultSuccess;
+}
+
+void System::StartSession() {
+    session->Start();
+}
+
+size_t System::GetSessionId() const {
+    return session_id;
+}
+
+Result System::Start() {
+    if (state != State::Stopped) {
+        return Service::Audio::ERR_OPERATION_FAILED;
+    }
+
+    session->Initialize(name, sample_format, channel_count, session_id, handle,
+                        applet_resource_user_id, Sink::StreamType::Out);
+    session->SetVolume(volume);
+    session->Start();
+    state = State::Started;
+
+    std::vector<AudioBuffer> buffers_to_flush{};
+    buffers.RegisterBuffers(buffers_to_flush);
+    session->AppendBuffers(buffers_to_flush);
+
+    return ResultSuccess;
+}
+
+Result System::Stop() {
+    if (state == State::Started) {
+        session->Stop();
+        session->SetVolume(0.0f);
+        state = State::Stopped;
+    }
+
+    return ResultSuccess;
+}
+
+bool System::AppendBuffer(const AudioOutBuffer& buffer, u64 tag) {
+    if (buffers.GetTotalBufferCount() == BufferCount) {
+        return false;
+    }
+
+    AudioBuffer new_buffer{
+        .played_timestamp = 0, .samples = buffer.samples, .tag = tag, .size = buffer.size};
+
+    buffers.AppendBuffer(new_buffer);
+    RegisterBuffers();
+
+    return true;
+}
+
+void System::RegisterBuffers() {
+    if (state == State::Started) {
+        std::vector<AudioBuffer> registered_buffers{};
+        buffers.RegisterBuffers(registered_buffers);
+        session->AppendBuffers(registered_buffers);
+    }
+}
+
+void System::ReleaseBuffers() {
+    bool signal{buffers.ReleaseBuffers(system.CoreTiming(), *session)};
+    if (signal) {
+        // Signal if any buffer was released, or if none are registered, we need more.
+        buffer_event->GetWritableEvent().Signal();
+    }
+}
+
+u32 System::GetReleasedBuffers(std::span<u64> tags) {
+    return buffers.GetReleasedBuffers(tags);
+}
+
+bool System::FlushAudioOutBuffers() {
+    if (state != State::Started) {
+        return false;
+    }
+
+    u32 buffers_released{};
+    buffers.FlushBuffers(buffers_released);
+
+    if (buffers_released > 0) {
+        buffer_event->GetWritableEvent().Signal();
+    }
+    return true;
+}
+
+u16 System::GetChannelCount() const {
+    return channel_count;
+}
+
+u32 System::GetSampleRate() const {
+    return sample_rate;
+}
+
+SampleFormat System::GetSampleFormat() const {
+    return sample_format;
+}
+
+State System::GetState() {
+    switch (state) {
+    case State::Started:
+    case State::Stopped:
+        return state;
+    default:
+        LOG_ERROR(Service_Audio, "AudioOut invalid state!");
+        state = State::Stopped;
+        break;
+    }
+    return state;
+}
+
+std::string System::GetName() const {
+    return name;
+}
+
+f32 System::GetVolume() const {
+    return volume;
+}
+
+void System::SetVolume(const f32 volume_) {
+    volume = volume_;
+    session->SetVolume(volume_);
+}
+
+bool System::ContainsAudioBuffer(const u64 tag) {
+    return buffers.ContainsBuffer(tag);
+}
+
+u32 System::GetBufferCount() {
+    return buffers.GetAppendedRegisteredCount();
+}
+
+u64 System::GetPlayedSampleCount() const {
+    return session->GetPlayedSampleCount();
+}
+
+} // namespace AudioCore::AudioOut

src/audio_core/out/audio_out_system.h

@@ -0,0 +1,257 @@
+// SPDX-FileCopyrightText: Copyright 2022 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#include <atomic>
+#include <memory>
+#include <span>
+#include <string>
+
+#include "audio_core/common/common.h"
+#include "audio_core/device/audio_buffers.h"
+#include "audio_core/device/device_session.h"
+#include "core/hle/service/audio/errors.h"
+
+namespace Core {
+class System;
+}
+
+namespace Kernel {
+class KEvent;
+}
+
+namespace AudioCore::AudioOut {
+
+constexpr SessionTypes SessionType = SessionTypes::AudioOut;
+
+struct AudioOutParameter {
+    /* 0x0 */ s32_le sample_rate;
+    /* 0x4 */ u16_le channel_count;
+    /* 0x6 */ u16_le reserved;
+};
+static_assert(sizeof(AudioOutParameter) == 0x8, "AudioOutParameter is an invalid size");
+
+struct AudioOutParameterInternal {
+    /* 0x0 */ u32_le sample_rate;
+    /* 0x4 */ u32_le channel_count;
+    /* 0x8 */ u32_le sample_format;
+    /* 0xC */ u32_le state;
+};
+static_assert(sizeof(AudioOutParameterInternal) == 0x10,
+              "AudioOutParameterInternal is an invalid size");
+
+struct AudioOutBuffer {
+    /* 0x00 */ AudioOutBuffer* next;
+    /* 0x08 */ VAddr samples;
+    /* 0x10 */ u64 capacity;
+    /* 0x18 */ u64 size;
+    /* 0x20 */ u64 offset;
+};
+static_assert(sizeof(AudioOutBuffer) == 0x28, "AudioOutBuffer is an invalid size");
+
+enum class State {
+    Started,
+    Stopped,
+};
+
+/**
+ * Controls and drives audio output.
+ */
+class System {
+public:
+    explicit System(Core::System& system, Kernel::KEvent* event, size_t session_id);
+    ~System();
+
+    /**
+     * Get the default audio output device name.
+     *
+     * @return The default audio output device name.
+     */
+    std::string_view GetDefaultOutputDeviceName();
+
+    /**
+     * Is the given initialize config valid?
+     *
+     * @param device_name - The name of the requested output device.
+     * @param in_params   - Input parameters, see AudioOutParameter.
+     * @return Result code.
+     */
+    Result IsConfigValid(std::string_view device_name, const AudioOutParameter& in_params);
+
+    /**
+     * Initialize this system.
+     *
+     * @param device_name             - The name of the requested output device.
+     * @param in_params               - Input parameters, see AudioOutParameter.
+     * @param handle                  - Unused.
+     * @param applet_resource_user_id - Unused.
+     * @return Result code.
+     */
+    Result Initialize(std::string& device_name, const AudioOutParameter& in_params, u32 handle,
+                      u64& applet_resource_user_id);
+
+    /**
+     * Start this system.
+     *
+     * @return Result code.
+     */
+    Result Start();
+
+    /**
+     * Stop this system.
+     *
+     * @return Result code.
+     */
+    Result Stop();
+
+    /**
+     * Finalize this system.
+     */
+    void Finalize();
+
+    /**
+     * Start this system's device session.
+     */
+    void StartSession();
+
+    /**
+     * Get this system's id.
+     */
+    size_t GetSessionId() const;
+
+    /**
+     * Append a new buffer to the device.
+     *
+     * @param buffer - New buffer to append.
+     * @param tag    - Unique tag of the buffer.
+     * @return True if the buffer was appended, otherwise false.
+     */
+    bool AppendBuffer(const AudioOutBuffer& buffer, u64 tag);
+
+    /**
+     * Register all appended buffers.
+     */
+    void RegisterBuffers();
+
+    /**
+     * Release all registered buffers.
+     */
+    void ReleaseBuffers();
+
+    /**
+     * Get all released buffers.
+     *
+     * @param tags - Container to be filled with the released buffers' tags.
+     * @return The number of buffers released.
+     */
+    u32 GetReleasedBuffers(std::span<u64> tags);
+
+    /**
+     * Flush all appended and registered buffers.
+     *
+     * @return True if buffers were successfully flushed, otherwise false.
+     */
+    bool FlushAudioOutBuffers();
+
+    /**
+     * Get this system's current channel count.
+     *
+     * @return The channel count.
+     */
+    u16 GetChannelCount() const;
+
+    /**
+     * Get this system's current sample rate.
+     *
+     * @return The sample rate.
+     */
+    u32 GetSampleRate() const;
+
+    /**
+     * Get this system's current sample format.
+     *
+     * @return The sample format.
+     */
+    SampleFormat GetSampleFormat() const;
+
+    /**
+     * Get this system's current state.
+     *
+     * @return The current state.
+     */
+    State GetState();
+
+    /**
+     * Get this system's name.
+     *
+     * @return The system's name.
+     */
+    std::string GetName() const;
+
+    /**
+     * Get this system's current volume.
+     *
+     * @return The system's current volume.
+     */
+    f32 GetVolume() const;
+
+    /**
+     * Set this system's current volume.
+     *
+     * @param The new volume.
+     */
+    void SetVolume(f32 volume);
+
+    /**
+     * Does the system contain this buffer?
+     *
+     * @param tag - Unique tag to search for.
+     * @return True if the buffer is in the system, otherwise false.
+     */
+    bool ContainsAudioBuffer(u64 tag);
+
+    /**
+     * Get the maximum number of usable buffers (default 32).
+     *
+     * @return The number of buffers.
+     */
+    u32 GetBufferCount();
+
+    /**
+     * Get the total number of samples played by this system.
+     *
+     * @return The number of samples.
+     */
+    u64 GetPlayedSampleCount() const;
+
+private:
+    /// Core system
+    Core::System& system;
+    /// (Unused)
+    u32 handle{};
+    /// (Unused)
+    u64 applet_resource_user_id{};
+    /// Buffer event, signalled when a buffer is ready
+    Kernel::KEvent* buffer_event;
+    /// Session id of this system
+    size_t session_id{};
+    /// Device session for this system
+    std::unique_ptr<DeviceSession> session;
+    /// Audio buffers in use by this system
+    AudioBuffers<BufferCount> buffers{BufferCount};
+    /// Sample rate of this system
+    u32 sample_rate{};
+    /// Sample format of this system
+    SampleFormat sample_format{SampleFormat::PcmInt16};
+    /// Channel count of this system
+    u16 channel_count{};
+    /// State of this system
+    std::atomic<State> state{State::Stopped};
+    /// Name of this system
+    std::string name{};
+    /// Volume of this system
+    f32 volume{1.0f};
+};
+
+} // namespace AudioCore::AudioOut

src/audio_core/renderer/adsp/adsp.cpp

@@ -0,0 +1,118 @@
+// SPDX-FileCopyrightText: Copyright 2022 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include "audio_core/renderer/adsp/adsp.h"
+#include "audio_core/renderer/adsp/command_buffer.h"
+#include "audio_core/sink/sink.h"
+#include "common/logging/log.h"
+#include "core/core.h"
+#include "core/core_timing.h"
+#include "core/core_timing_util.h"
+#include "core/memory.h"
+
+namespace AudioCore::AudioRenderer::ADSP {
+
+ADSP::ADSP(Core::System& system_, Sink::Sink& sink_)
+    : system{system_}, memory{system.Memory()}, sink{sink_} {}
+
+ADSP::~ADSP() {
+    ClearCommandBuffers();
+}
+
+State ADSP::GetState() const {
+    if (running) {
+        return State::Started;
+    }
+    return State::Stopped;
+}
+
+AudioRenderer_Mailbox* ADSP::GetRenderMailbox() {
+    return &render_mailbox;
+}
+
+void ADSP::ClearRemainCount(const u32 session_id) {
+    render_mailbox.ClearRemainCount(session_id);
+}
+
+u64 ADSP::GetSignalledTick() const {
+    return render_mailbox.GetSignalledTick();
+}
+
+u64 ADSP::GetTimeTaken() const {
+    return render_mailbox.GetRenderTimeTaken();
+}
+
+u64 ADSP::GetRenderTimeTaken(const u32 session_id) {
+    return render_mailbox.GetCommandBuffer(session_id).render_time_taken;
+}
+
+u32 ADSP::GetRemainCommandCount(const u32 session_id) const {
+    return render_mailbox.GetRemainCommandCount(session_id);
+}
+
+void ADSP::SendCommandBuffer(const u32 session_id, CommandBuffer& command_buffer) {
+    render_mailbox.SetCommandBuffer(session_id, command_buffer);
+}
+
+u64 ADSP::GetRenderingStartTick(const u32 session_id) {
+    return render_mailbox.GetSignalledTick() +
+           render_mailbox.GetCommandBuffer(session_id).render_time_taken;
+}
+
+bool ADSP::Start() {
+    if (running) {
+        return running;
+    }
+
+    running = true;
+    systems_active++;
+    audio_renderer = std::make_unique<AudioRenderer>(system);
+    audio_renderer->Start(&render_mailbox);
+    render_mailbox.HostSendMessage(RenderMessage::AudioRenderer_InitializeOK);
+    if (render_mailbox.HostWaitMessage() != RenderMessage::AudioRenderer_InitializeOK) {
+        LOG_ERROR(
+            Service_Audio,
+            "Host Audio Renderer -- Failed to receive initialize message response from ADSP!");
+    }
+    return running;
+}
+
+void ADSP::Stop() {
+    systems_active--;
+    if (running && systems_active == 0) {
+        {
+            std::scoped_lock l{mailbox_lock};
+            render_mailbox.HostSendMessage(RenderMessage::AudioRenderer_Shutdown);
+            if (render_mailbox.HostWaitMessage() != RenderMessage::AudioRenderer_Shutdown) {
+                LOG_ERROR(Service_Audio, "Host Audio Renderer -- Failed to receive shutdown "
+                                         "message response from ADSP!");
+            }
+        }
+        audio_renderer->Stop();
+        running = false;
+    }
+}
+
+void ADSP::Signal() {
+    const auto signalled_tick{system.CoreTiming().GetClockTicks()};
+    render_mailbox.SetSignalledTick(signalled_tick);
+    render_mailbox.HostSendMessage(RenderMessage::AudioRenderer_Render);
+}
+
+void ADSP::Wait() {
+    std::scoped_lock l{mailbox_lock};
+    auto response{render_mailbox.HostWaitMessage()};
+    if (response != RenderMessage::AudioRenderer_RenderResponse) {
+        LOG_ERROR(Service_Audio, "Invalid ADSP response message, expected 0x{:02X}, got 0x{:02X}",
+                  static_cast<u32>(RenderMessage::AudioRenderer_RenderResponse),
+                  static_cast<u32>(response));
+    }
+
+    ClearCommandBuffers();
+}
+
+void ADSP::ClearCommandBuffers() {
+    render_mailbox.ClearCommandBuffers();
+}
+
+} // namespace AudioCore::AudioRenderer::ADSP

src/audio_core/renderer/adsp/adsp.h

@@ -0,0 +1,173 @@
+// SPDX-FileCopyrightText: Copyright 2022 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#include <memory>
+#include <mutex>
+
+#include "audio_core/renderer/adsp/audio_renderer.h"
+#include "common/common_types.h"
+
+namespace Core {
+namespace Memory {
+class Memory;
+}
+class System;
+} // namespace Core
+
+namespace AudioCore {
+namespace Sink {
+class Sink;
+}
+
+namespace AudioRenderer::ADSP {
+struct CommandBuffer;
+
+enum class State {
+    Started,
+    Stopped,
+};
+
+/**
+ * Represents the ADSP embedded within the audio sysmodule.
+ * This is a 32-bit Linux4Tegra kernel from nVidia, which is launched with the sysmodule on boot.
+ *
+ * The kernel will run apps you program for it, Nintendo have the following:
+ *
+ * Gmix - Responsible for mixing final audio and sending it out to hardware. This is last place all
+ *        audio samples end up, and we skip it entirely, since we have very different backends and
+ *        mixing is implicitly handled by the OS (but also due to lack of research/simplicity).
+ *
+ * AudioRenderer - Receives command lists generated by the audio render
+ *                 system, processes them, and sends the samples to Gmix.
+ *
+ * OpusDecoder - Contains libopus, and controls processing Opus audio and sends it to Gmix.
+ *               Not much research done here, TODO if needed.
+ *
+ * We only implement the AudioRenderer for now.
+ *
+ * Communication for the apps is done through mailboxes, and some shared memory.
+ */
+class ADSP {
+public:
+    explicit ADSP(Core::System& system, Sink::Sink& sink);
+    ~ADSP();
+
+    /**
+     * Start the ADSP.
+     *
+     * @return True if started or already running, otherwise false.
+     */
+    bool Start();
+
+    /**
+     * Stop the ADSP.
+     *
+     * @return True if started or already running, otherwise false.
+     */
+    void Stop();
+
+    /**
+     * Get the ADSP's state.
+     *
+     * @return Started or Stopped.
+     */
+    State GetState() const;
+
+    /**
+     * Get the AudioRenderer mailbox to communicate with it.
+     *
+     * @return The AudioRenderer mailbox.
+     */
+    AudioRenderer_Mailbox* GetRenderMailbox();
+
+    /**
+     * Get the tick the ADSP was signalled.
+     *
+     * @return The tick the ADSP was signalled.
+     */
+    u64 GetSignalledTick() const;
+
+    /**
+     * Get the total time it took for the ADSP to run the last command lists (both command lists).
+     *
+     * @return The tick the ADSP was signalled.
+     */
+    u64 GetTimeTaken() const;
+
+    /**
+     * Get the last time a given command list took to run.
+     *
+     * @param session_id - The session id to check (0 or 1).
+     * @return The time it took.
+     */
+    u64 GetRenderTimeTaken(u32 session_id);
+
+    /**
+     * Clear the remaining command count for a given session.
+     *
+     * @param session_id - The session id to check (0 or 1).
+     */
+    void ClearRemainCount(u32 session_id);
+
+    /**
+     * Get the remaining number of commands left to process for a command list.
+     *
+     * @param session_id - The session id to check (0 or 1).
+     * @return The number of commands remaining.
+     */
+    u32 GetRemainCommandCount(u32 session_id) const;
+
+    /**
+     * Get the last tick a command list started processing.
+     *
+     * @param session_id - The session id to check (0 or 1).
+     * @return The last tick the given command list started.
+     */
+    u64 GetRenderingStartTick(u32 session_id);
+
+    /**
+     * Set a command buffer to be processed.
+     *
+     * @param session_id     - The session id to check (0 or 1).
+     * @param command_buffer - The command buffer to process.
+     */
+    void SendCommandBuffer(u32 session_id, CommandBuffer& command_buffer);
+
+    /**
+     * Clear the command buffers (does not clear the time taken or the remaining command count)
+     */
+    void ClearCommandBuffers();
+
+    /**
+     * Signal the AudioRenderer to begin processing.
+     */
+    void Signal();
+
+    /**
+     * Wait for the AudioRenderer to finish processing.
+     */
+    void Wait();
+
+private:
+    /// Core system
+    Core::System& system;
+    /// Core memory
+    Core::Memory::Memory& memory;
+    /// Number of systems active, used to prevent accidental shutdowns
+    u8 systems_active{0};
+    /// ADSP running state
+    std::atomic<bool> running{false};
+    /// Output sink used by the ADSP
+    Sink::Sink& sink;
+    /// AudioRenderer app
+    std::unique_ptr<AudioRenderer> audio_renderer{};
+    /// Communication for the AudioRenderer
+    AudioRenderer_Mailbox render_mailbox{};
+    /// Mailbox lock ffor the render mailbox
+    std::mutex mailbox_lock;
+};
+
+} // namespace AudioRenderer::ADSP
+} // namespace AudioCore

src/audio_core/renderer/adsp/audio_renderer.cpp

@@ -0,0 +1,226 @@
+// SPDX-FileCopyrightText: Copyright 2022 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include <array>
+#include <chrono>
+
+#include "audio_core/audio_core.h"
+#include "audio_core/common/common.h"
+#include "audio_core/renderer/adsp/audio_renderer.h"
+#include "audio_core/sink/sink.h"
+#include "common/logging/log.h"
+#include "common/microprofile.h"
+#include "common/thread.h"
+#include "core/core.h"
+#include "core/core_timing.h"
+#include "core/core_timing_util.h"
+
+MICROPROFILE_DEFINE(Audio_Renderer, "Audio", "DSP", MP_RGB(60, 19, 97));
+
+namespace AudioCore::AudioRenderer::ADSP {
+
+void AudioRenderer_Mailbox::HostSendMessage(RenderMessage message_) {
+    adsp_messages.enqueue(message_);
+    adsp_event.Set();
+}
+
+RenderMessage AudioRenderer_Mailbox::HostWaitMessage() {
+    host_event.Wait();
+    RenderMessage msg{RenderMessage::Invalid};
+    if (!host_messages.try_dequeue(msg)) {
+        LOG_ERROR(Service_Audio, "Failed to dequeue host message!");
+    }
+    return msg;
+}
+
+void AudioRenderer_Mailbox::ADSPSendMessage(const RenderMessage message_) {
+    host_messages.enqueue(message_);
+    host_event.Set();
+}
+
+RenderMessage AudioRenderer_Mailbox::ADSPWaitMessage() {
+    adsp_event.Wait();
+    RenderMessage msg{RenderMessage::Invalid};
+    if (!adsp_messages.try_dequeue(msg)) {
+        LOG_ERROR(Service_Audio, "Failed to dequeue ADSP message!");
+    }
+    return msg;
+}
+
+CommandBuffer& AudioRenderer_Mailbox::GetCommandBuffer(const s32 session_id) {
+    return command_buffers[session_id];
+}
+
+void AudioRenderer_Mailbox::SetCommandBuffer(const u32 session_id, CommandBuffer& buffer) {
+    command_buffers[session_id] = buffer;
+}
+
+u64 AudioRenderer_Mailbox::GetRenderTimeTaken() const {
+    return command_buffers[0].render_time_taken + command_buffers[1].render_time_taken;
+}
+
+u64 AudioRenderer_Mailbox::GetSignalledTick() const {
+    return signalled_tick;
+}
+
+void AudioRenderer_Mailbox::SetSignalledTick(const u64 tick) {
+    signalled_tick = tick;
+}
+
+void AudioRenderer_Mailbox::ClearRemainCount(const u32 session_id) {
+    command_buffers[session_id].remaining_command_count = 0;
+}
+
+u32 AudioRenderer_Mailbox::GetRemainCommandCount(const u32 session_id) const {
+    return command_buffers[session_id].remaining_command_count;
+}
+
+void AudioRenderer_Mailbox::ClearCommandBuffers() {
+    command_buffers[0].buffer = 0;
+    command_buffers[0].size = 0;
+    command_buffers[0].reset_buffers = false;
+    command_buffers[1].buffer = 0;
+    command_buffers[1].size = 0;
+    command_buffers[1].reset_buffers = false;
+}
+
+AudioRenderer::AudioRenderer(Core::System& system_)
+    : system{system_}, sink{system.AudioCore().GetOutputSink()} {
+    CreateSinkStreams();
+}
+
+AudioRenderer::~AudioRenderer() {
+    Stop();
+    for (auto& stream : streams) {
+        if (stream) {
+            sink.CloseStream(stream);
+        }
+        stream = nullptr;
+    }
+}
+
+void AudioRenderer::Start(AudioRenderer_Mailbox* mailbox_) {
+    if (running) {
+        return;
+    }
+
+    mailbox = mailbox_;
+    thread = std::thread(&AudioRenderer::ThreadFunc, this);
+    for (auto& stream : streams) {
+        stream->Start();
+    }
+    running = true;
+}
+
+void AudioRenderer::Stop() {
+    if (!running) {
+        return;
+    }
+
+    for (auto& stream : streams) {
+        stream->Stop();
+    }
+    thread.join();
+    running = false;
+}
+
+void AudioRenderer::CreateSinkStreams() {
+    u32 channels{sink.GetDeviceChannels()};
+    for (u32 i = 0; i < MaxRendererSessions; i++) {
+        std::string name{fmt::format("ADSP_RenderStream-{}", i)};
+        streams[i] =
+            sink.AcquireSinkStream(system, channels, name, ::AudioCore::Sink::StreamType::Render);
+    }
+}
+
+void AudioRenderer::ThreadFunc() {
+    constexpr char name[]{"yuzu:AudioRenderer"};
+    MicroProfileOnThreadCreate(name);
+    Common::SetCurrentThreadName(name);
+    Common::SetCurrentThreadPriority(Common::ThreadPriority::Critical);
+    if (mailbox->ADSPWaitMessage() != RenderMessage::AudioRenderer_InitializeOK) {
+        LOG_ERROR(Service_Audio,
+                  "ADSP Audio Renderer -- Failed to receive initialize message from host!");
+        return;
+    }
+
+    mailbox->ADSPSendMessage(RenderMessage::AudioRenderer_InitializeOK);
+
+    constexpr u64 max_process_time{2'304'000ULL};
+
+    while (true) {
+        auto message{mailbox->ADSPWaitMessage()};
+        switch (message) {
+        case RenderMessage::AudioRenderer_Shutdown:
+            mailbox->ADSPSendMessage(RenderMessage::AudioRenderer_Shutdown);
+            return;
+
+        case RenderMessage::AudioRenderer_Render: {
+            std::array<bool, MaxRendererSessions> buffers_reset{};
+            std::array<u64, MaxRendererSessions> render_times_taken{};
+            const auto start_time{system.CoreTiming().GetClockTicks()};
+
+            for (u32 index = 0; index < 2; index++) {
+                auto& command_buffer{mailbox->GetCommandBuffer(index)};
+                auto& command_list_processor{command_list_processors[index]};
+
+                // Check this buffer is valid, as it may not be used.
+                if (command_buffer.buffer != 0) {
+                    // If there are no remaining commands (from the previous list),
+                    // this is a new command list, initalize it.
+                    if (command_buffer.remaining_command_count == 0) {
+                        command_list_processor.Initialize(system, command_buffer.buffer,
+                                                          command_buffer.size, streams[index]);
+                    }
+
+                    if (command_buffer.reset_buffers && !buffers_reset[index]) {
+                        streams[index]->ClearQueue();
+                        buffers_reset[index] = true;
+                    }
+
+                    u64 max_time{max_process_time};
+                    if (index == 1 && command_buffer.applet_resource_user_id ==
+                                          mailbox->GetCommandBuffer(0).applet_resource_user_id) {
+                        max_time = max_process_time -
+                                   Core::Timing::CyclesToNs(render_times_taken[0]).count();
+                        if (render_times_taken[0] > max_process_time) {
+                            max_time = 0;
+                        }
+                    }
+
+                    max_time = std::min(command_buffer.time_limit, max_time);
+                    command_list_processor.SetProcessTimeMax(max_time);
+
+                    // Process the command list
+                    {
+                        MICROPROFILE_SCOPE(Audio_Renderer);
+                        render_times_taken[index] =
+                            command_list_processor.Process(index) - start_time;
+                    }
+
+                    if (index == 0) {
+                        auto stream{command_list_processor.GetOutputSinkStream()};
+                        system.AudioCore().SetStreamQueue(stream->GetQueueSize());
+                    }
+
+                    const auto end_time{system.CoreTiming().GetClockTicks()};
+
+                    command_buffer.remaining_command_count =
+                        command_list_processor.GetRemainingCommandCount();
+                    command_buffer.render_time_taken = end_time - start_time;
+                }
+            }
+
+            mailbox->ADSPSendMessage(RenderMessage::AudioRenderer_RenderResponse);
+        } break;
+
+        default:
+            LOG_WARNING(Service_Audio,
+                        "ADSP AudioRenderer received an invalid message, msg={:02X}!",
+                        static_cast<u32>(message));
+            break;
+        }
+    }
+}
+
+} // namespace AudioCore::AudioRenderer::ADSP

src/audio_core/renderer/adsp/audio_renderer.h

@@ -0,0 +1,203 @@
+// SPDX-FileCopyrightText: Copyright 2022 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#include <array>
+#include <memory>
+#include <thread>
+
+#include "audio_core/renderer/adsp/command_buffer.h"
+#include "audio_core/renderer/adsp/command_list_processor.h"
+#include "common/common_types.h"
+#include "common/reader_writer_queue.h"
+#include "common/thread.h"
+
+namespace Core {
+namespace Timing {
+struct EventType;
+}
+class System;
+} // namespace Core
+
+namespace AudioCore {
+namespace Sink {
+class Sink;
+}
+
+namespace AudioRenderer::ADSP {
+
+enum class RenderMessage {
+    /* 0x00 */ Invalid,
+    /* 0x01 */ AudioRenderer_MapUnmap_Map,
+    /* 0x02 */ AudioRenderer_MapUnmap_MapResponse,
+    /* 0x03 */ AudioRenderer_MapUnmap_Unmap,
+    /* 0x04 */ AudioRenderer_MapUnmap_UnmapResponse,
+    /* 0x05 */ AudioRenderer_MapUnmap_InvalidateCache,
+    /* 0x06 */ AudioRenderer_MapUnmap_InvalidateCacheResponse,
+    /* 0x07 */ AudioRenderer_MapUnmap_Shutdown,
+    /* 0x08 */ AudioRenderer_MapUnmap_ShutdownResponse,
+    /* 0x16 */ AudioRenderer_InitializeOK = 0x16,
+    /* 0x20 */ AudioRenderer_RenderResponse = 0x20,
+    /* 0x2A */ AudioRenderer_Render = 0x2A,
+    /* 0x34 */ AudioRenderer_Shutdown = 0x34,
+};
+
+/**
+ * A mailbox for the AudioRenderer, allowing communication between the host and the AudioRenderer
+ * running on the ADSP.
+ */
+class AudioRenderer_Mailbox {
+public:
+    /**
+     * Send a message from the host to the AudioRenderer.
+     *
+     * @param message_ - The message to send to the AudioRenderer.
+     */
+    void HostSendMessage(RenderMessage message);
+
+    /**
+     * Host wait for a message from the AudioRenderer.
+     *
+     * @return The message returned from the AudioRenderer.
+     */
+    RenderMessage HostWaitMessage();
+
+    /**
+     * Send a message from the AudioRenderer to the host.
+     *
+     * @param message_ - The message to send to the host.
+     */
+    void ADSPSendMessage(RenderMessage message);
+
+    /**
+     * AudioRenderer wait for a message from the host.
+     *
+     * @return The message returned from the AudioRenderer.
+     */
+    RenderMessage ADSPWaitMessage();
+
+    /**
+     * Get the command buffer with the given session id (0 or 1).
+     *
+     * @param session_id - The session id to get (0 or 1).
+     * @return The command buffer.
+     */
+    CommandBuffer& GetCommandBuffer(s32 session_id);
+
+    /**
+     * Set the command buffer with the given session id (0 or 1).
+     *
+     * @param session_id - The session id to get (0 or 1).
+     * @param buffer     - The command buffer to set.
+     */
+    void SetCommandBuffer(u32 session_id, CommandBuffer& buffer);
+
+    /**
+     * Get the total render time taken for the last command lists sent.
+     *
+     * @return Total render time taken for the last command lists.
+     */
+    u64 GetRenderTimeTaken() const;
+
+    /**
+     * Get the tick the AudioRenderer was signalled.
+     *
+     * @return The tick the AudioRenderer was signalled.
+     */
+    u64 GetSignalledTick() const;
+
+    /**
+     * Set the tick the AudioRenderer was signalled.
+     *
+     * @param tick - The tick the AudioRenderer was signalled.
+     */
+    void SetSignalledTick(u64 tick);
+
+    /**
+     * Clear the remaining command count.
+     *
+     * @param session_id - Index for which command list to clear (0 or 1).
+     */
+    void ClearRemainCount(u32 session_id);
+
+    /**
+     * Get the remaining command count for a given command list.
+     *
+     * @param session_id - Index for which command list to clear (0 or 1).
+     * @return The remaining command count.
+     */
+    u32 GetRemainCommandCount(u32 session_id) const;
+
+    /**
+     * Clear the command buffers (does not clear the time taken or the remaining command count).
+     */
+    void ClearCommandBuffers();
+
+private:
+    /// Host signalling event
+    Common::Event host_event{};
+    /// AudioRenderer signalling event
+    Common::Event adsp_event{};
+    /// Host message queue
+
+    Common::ReaderWriterQueue<RenderMessage> host_messages{};
+    /// AudioRenderer message queue
+
+    Common::ReaderWriterQueue<RenderMessage> adsp_messages{};
+    /// Command buffers
+
+    std::array<CommandBuffer, MaxRendererSessions> command_buffers{};
+    /// Tick the AudioRnederer was signalled
+    u64 signalled_tick{};
+};
+
+/**
+ * The AudioRenderer application running on the ADSP.
+ */
+class AudioRenderer {
+public:
+    explicit AudioRenderer(Core::System& system);
+    ~AudioRenderer();
+
+    /**
+     * Start the AudioRenderer.
+     *
+     * @param The mailbox to use for this session.
+     */
+    void Start(AudioRenderer_Mailbox* mailbox);
+
+    /**
+     * Stop the AudioRenderer.
+     */
+    void Stop();
+
+private:
+    /**
+     * Main AudioRenderer thread, responsible for processing the command lists.
+     */
+    void ThreadFunc();
+
+    /**
+     * Creates the streams which will receive the processed samples.
+     */
+    void CreateSinkStreams();
+
+    /// Core system
+    Core::System& system;
+    /// Main thread
+    std::thread thread{};
+    /// The current state
+    std::atomic<bool> running{};
+    /// The active mailbox
+    AudioRenderer_Mailbox* mailbox{};
+    /// The command lists to process
+    std::array<CommandListProcessor, MaxRendererSessions> command_list_processors{};
+    /// The output sink the AudioRenderer will use
+    Sink::Sink& sink;
+    /// The streams which will receive the processed samples
+    std::array<Sink::SinkStream*, MaxRendererSessions> streams;
+};
+
+} // namespace AudioRenderer::ADSP
+} // namespace AudioCore

src/audio_core/renderer/adsp/command_buffer.h

@@ -0,0 +1,21 @@
+// SPDX-FileCopyrightText: Copyright 2022 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#include "audio_core/common/common.h"
+#include "common/common_types.h"
+
+namespace AudioCore::AudioRenderer::ADSP {
+
+struct CommandBuffer {
+    CpuAddr buffer;
+    u64 size;
+    u64 time_limit;
+    u32 remaining_command_count;
+    bool reset_buffers;
+    u64 applet_resource_user_id;
+    u64 render_time_taken;
+};
+
+} // namespace AudioCore::AudioRenderer::ADSP

src/audio_core/renderer/adsp/command_list_processor.cpp

@@ -0,0 +1,109 @@
+// SPDX-FileCopyrightText: Copyright 2022 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include <string>
+
+#include "audio_core/renderer/adsp/command_list_processor.h"
+#include "audio_core/renderer/command/command_list_header.h"
+#include "audio_core/renderer/command/commands.h"
+#include "common/settings.h"
+#include "core/core.h"
+#include "core/core_timing.h"
+#include "core/core_timing_util.h"
+#include "core/memory.h"
+
+namespace AudioCore::AudioRenderer::ADSP {
+
+void CommandListProcessor::Initialize(Core::System& system_, CpuAddr buffer, u64 size,
+                                      Sink::SinkStream* stream_) {
+    system = &system_;
+    memory = &system->Memory();
+    stream = stream_;
+    header = reinterpret_cast<CommandListHeader*>(buffer);
+    commands = reinterpret_cast<u8*>(buffer + sizeof(CommandListHeader));
+    commands_buffer_size = size;
+    command_count = header->command_count;
+    sample_count = header->sample_count;
+    target_sample_rate = header->sample_rate;
+    mix_buffers = header->samples_buffer;
+    buffer_count = header->buffer_count;
+    processed_command_count = 0;
+}
+
+void CommandListProcessor::SetProcessTimeMax(const u64 time) {
+    max_process_time = time;
+}
+
+u32 CommandListProcessor::GetRemainingCommandCount() const {
+    return command_count - processed_command_count;
+}
+
+void CommandListProcessor::SetBuffer(const CpuAddr buffer, const u64 size) {
+    commands = reinterpret_cast<u8*>(buffer + sizeof(CommandListHeader));
+    commands_buffer_size = size;
+}
+
+Sink::SinkStream* CommandListProcessor::GetOutputSinkStream() const {
+    return stream;
+}
+
+u64 CommandListProcessor::Process(u32 session_id) {
+    const auto start_time_{system->CoreTiming().GetClockTicks()};
+    const auto command_base{CpuAddr(commands)};
+
+    if (processed_command_count > 0) {
+        current_processing_time += start_time_ - end_time;
+    } else {
+        start_time = start_time_;
+        current_processing_time = 0;
+    }
+
+    std::string dump{fmt::format("\nSession {}\n", session_id)};
+
+    for (u32 index = 0; index < command_count; index++) {
+        auto& command{*reinterpret_cast<ICommand*>(commands)};
+
+        if (command.magic != 0xCAFEBABE) {
+            LOG_ERROR(Service_Audio, "Command has invalid magic! Expected 0xCAFEBABE, got {:08X}",
+                      command.magic);
+            return system->CoreTiming().GetClockTicks() - start_time_;
+        }
+
+        auto current_offset{CpuAddr(commands) - command_base};
+
+        if (current_offset + command.size > commands_buffer_size) {
+            LOG_ERROR(Service_Audio,
+                      "Command exceeded command buffer, buffer size {:08X}, command ends at {:08X}",
+                      commands_buffer_size,
+                      CpuAddr(commands) + command.size - sizeof(CommandListHeader));
+            return system->CoreTiming().GetClockTicks() - start_time_;
+        }
+
+        if (Settings::values.dump_audio_commands) {
+            command.Dump(*this, dump);
+        }
+
+        if (!command.Verify(*this)) {
+            break;
+        }
+
+        if (command.enabled) {
+            command.Process(*this);
+        } else {
+            dump += fmt::format("\tDisabled!\n");
+        }
+
+        processed_command_count++;
+        commands += command.size;
+    }
+
+    if (Settings::values.dump_audio_commands && dump != last_dump) {
+        LOG_WARNING(Service_Audio, "{}", dump);
+        last_dump = dump;
+    }
+
+    end_time = system->CoreTiming().GetClockTicks();
+    return end_time - start_time_;
+}
+
+} // namespace AudioCore::AudioRenderer::ADSP

src/audio_core/renderer/adsp/command_list_processor.h

@@ -0,0 +1,118 @@
+// SPDX-FileCopyrightText: Copyright 2022 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#include <span>
+
+#include "audio_core/common/common.h"
+#include "common/common_types.h"
+
+namespace Core {
+namespace Memory {
+class Memory;
+}
+class System;
+} // namespace Core
+
+namespace AudioCore {
+namespace Sink {
+class SinkStream;
+}
+
+namespace AudioRenderer {
+struct CommandListHeader;
+
+namespace ADSP {
+
+/**
+ * A processor for command lists given to the AudioRenderer.
+ */
+class CommandListProcessor {
+public:
+    /**
+     * Initialize the processor.
+     *
+     * @param system_ - The core system.
+     * @param buffer  - The command buffer to process.
+     * @param size    - The size of the buffer.
+     * @param stream_ - The stream to be used for sending the samples.
+     */
+    void Initialize(Core::System& system, CpuAddr buffer, u64 size, Sink::SinkStream* stream);
+
+    /**
+     * Set the maximum processing time for this command list.
+     *
+     * @param time - The maximum process time.
+     */
+    void SetProcessTimeMax(u64 time);
+
+    /**
+     * Get the remaining command count for this list.
+     *
+     * @return The remaining command count.
+     */
+    u32 GetRemainingCommandCount() const;
+
+    /**
+     * Set the command buffer.
+     *
+     * @param buffer - The buffer to use.
+     * @param size   - The size of the buffer.
+     */
+    void SetBuffer(CpuAddr buffer, u64 size);
+
+    /**
+     * Get the stream for this command list.
+     *
+     * @return The stream associated with this command list.
+     */
+    Sink::SinkStream* GetOutputSinkStream() const;
+
+    /**
+     * Process the command list.
+     *
+     * @param index - Index of the current command list.
+     * @return The time taken to process.
+     */
+    u64 Process(u32 session_id);
+
+    /// Core system
+    Core::System* system{};
+    /// Core memory
+    Core::Memory::Memory* memory{};
+    /// Stream for the processed samples
+    Sink::SinkStream* stream{};
+    /// Header info for this command list
+    CommandListHeader* header{};
+    /// The command buffer
+    u8* commands{};
+    /// The command buffer size
+    u64 commands_buffer_size{};
+    /// The maximum processing time alloted
+    u64 max_process_time{};
+    /// The number of commands in the buffer
+    u32 command_count{};
+    /// The target sample count for output
+    u32 sample_count{};
+    /// The target sample rate for output
+    u32 target_sample_rate{};
+    /// The mixing buffers used by the commands
+    std::span<s32> mix_buffers{};
+    /// The number of mix buffers
+    u32 buffer_count{};
+    /// The number of processed commands so far
+    u32 processed_command_count{};
+    /// The processing start time of this list
+    u64 start_time{};
+    /// The current processing time for this list
+    u64 current_processing_time{};
+    /// The end processing time for this list
+    u64 end_time{};
+    /// Last command list string generated, used for dumping audio commands to console
+    std::string last_dump{};
+};
+
+} // namespace ADSP
+} // namespace AudioRenderer
+} // namespace AudioCore

src/audio_core/renderer/audio_device.cpp

@@ -0,0 +1,52 @@
+// SPDX-FileCopyrightText: Copyright 2022 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include "audio_core/audio_core.h"
+#include "audio_core/common/feature_support.h"
+#include "audio_core/renderer/audio_device.h"
+#include "audio_core/sink/sink.h"
+#include "core/core.h"
+
+namespace AudioCore::AudioRenderer {
+
+AudioDevice::AudioDevice(Core::System& system, const u64 applet_resource_user_id_,
+                         const u32 revision)
+    : output_sink{system.AudioCore().GetOutputSink()},
+      applet_resource_user_id{applet_resource_user_id_}, user_revision{revision} {}
+
+u32 AudioDevice::ListAudioDeviceName(std::vector<AudioDeviceName>& out_buffer,
+                                     const size_t max_count) {
+    std::span<AudioDeviceName> names{};
+
+    if (CheckFeatureSupported(SupportTags::AudioUsbDeviceOutput, user_revision)) {
+        names = usb_device_names;
+    } else {
+        names = device_names;
+    }
+
+    u32 out_count{static_cast<u32>(std::min(max_count, names.size()))};
+    for (u32 i = 0; i < out_count; i++) {
+        out_buffer.push_back(names[i]);
+    }
+    return out_count;
+}
+
+u32 AudioDevice::ListAudioOutputDeviceName(std::vector<AudioDeviceName>& out_buffer,
+                                           const size_t max_count) {
+    u32 out_count{static_cast<u32>(std::min(max_count, output_device_names.size()))};
+
+    for (u32 i = 0; i < out_count; i++) {
+        out_buffer.push_back(output_device_names[i]);
+    }
+    return out_count;
+}
+
+void AudioDevice::SetDeviceVolumes(const f32 volume) {
+    output_sink.SetDeviceVolume(volume);
+}
+
+f32 AudioDevice::GetDeviceVolume([[maybe_unused]] std::string_view name) {
+    return output_sink.GetDeviceVolume();
+}
+
+} // namespace AudioCore::AudioRenderer

src/audio_core/renderer/audio_device.h

@@ -0,0 +1,88 @@
+// SPDX-FileCopyrightText: Copyright 2022 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#include <span>
+
+#include "audio_core/audio_render_manager.h"
+
+namespace Core {
+class System;
+}
+
+namespace AudioCore {
+namespace Sink {
+class Sink;
+}
+
+namespace AudioRenderer {
+/**
+ * An interface to an output audio device available to the Switch.
+ */
+class AudioDevice {
+public:
+    struct AudioDeviceName {
+        std::array<char, 0x100> name;
+
+        AudioDeviceName(const char* name_) {
+            std::strncpy(name.data(), name_, name.size());
+        }
+    };
+
+    std::array<AudioDeviceName, 4> usb_device_names{"AudioStereoJackOutput",
+                                                    "AudioBuiltInSpeakerOutput", "AudioTvOutput",
+                                                    "AudioUsbDeviceOutput"};
+    std::array<AudioDeviceName, 3> device_names{"AudioStereoJackOutput",
+                                                "AudioBuiltInSpeakerOutput", "AudioTvOutput"};
+    std::array<AudioDeviceName, 3> output_device_names{"AudioBuiltInSpeakerOutput", "AudioTvOutput",
+                                                       "AudioExternalOutput"};
+
+    explicit AudioDevice(Core::System& system, u64 applet_resource_user_id, u32 revision);
+
+    /**
+     * Get a list of the available output devices.
+     *
+     * @param out_buffer - Output buffer to write the available device names.
+     * @param max_count  - Maximum number of devices to write (count of out_buffer).
+     * @return Number of device names written.
+     */
+    u32 ListAudioDeviceName(std::vector<AudioDeviceName>& out_buffer, size_t max_count);
+
+    /**
+     * Get a list of the available output devices.
+     * Different to above somehow...
+     *
+     * @param out_buffer - Output buffer to write the available device names.
+     * @param max_count  - Maximum number of devices to write (count of out_buffer).
+     * @return Number of device names written.
+     */
+    u32 ListAudioOutputDeviceName(std::vector<AudioDeviceName>& out_buffer, size_t max_count);
+
+    /**
+     * Set the volume of all streams in the backend sink.
+     *
+     * @param volume - Volume to set.
+     */
+    void SetDeviceVolumes(f32 volume);
+
+    /**
+     * Get the volume for a given device name.
+     * Note: This is not fully implemented, we only assume 1 device for all streams.
+     *
+     * @param name - Name of the device to check. Unused.
+     * @return Volume of the device.
+     */
+    f32 GetDeviceVolume(std::string_view name);
+
+private:
+    /// Backend output sink for the device
+    Sink::Sink& output_sink;
+    /// Resource id this device is used for
+    const u64 applet_resource_user_id;
+    /// User audio renderer revision
+    const u32 user_revision;
+};
+
+} // namespace AudioRenderer
+} // namespace AudioCore

src/audio_core/renderer/audio_renderer.cpp

@@ -0,0 +1,67 @@
+// SPDX-FileCopyrightText: Copyright 2022 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include "audio_core/audio_render_manager.h"
+#include "audio_core/common/audio_renderer_parameter.h"
+#include "audio_core/renderer/audio_renderer.h"
+#include "audio_core/renderer/system_manager.h"
+#include "core/core.h"
+#include "core/hle/kernel/k_transfer_memory.h"
+#include "core/hle/service/audio/errors.h"
+
+namespace AudioCore::AudioRenderer {
+
+Renderer::Renderer(Core::System& system_, Manager& manager_, Kernel::KEvent* rendered_event)
+    : core{system_}, manager{manager_}, system{system_, rendered_event} {}
+
+Result Renderer::Initialize(const AudioRendererParameterInternal& params,
+                            Kernel::KTransferMemory* transfer_memory,
+                            const u64 transfer_memory_size, const u32 process_handle,
+                            const u64 applet_resource_user_id, const s32 session_id) {
+    if (params.execution_mode == ExecutionMode::Auto) {
+        if (!manager.AddSystem(system)) {
+            LOG_ERROR(Service_Audio,
+                      "Both Audio Render sessions are in use, cannot create any more");
+            return Service::Audio::ERR_MAXIMUM_SESSIONS_REACHED;
+        }
+        system_registered = true;
+    }
+
+    initialized = true;
+    system.Initialize(params, transfer_memory, transfer_memory_size, process_handle,
+                      applet_resource_user_id, session_id);
+
+    return ResultSuccess;
+}
+
+void Renderer::Finalize() {
+    auto session_id{system.GetSessionId()};
+
+    system.Finalize();
+
+    if (system_registered) {
+        manager.RemoveSystem(system);
+        system_registered = false;
+    }
+
+    manager.ReleaseSessionId(session_id);
+}
+
+System& Renderer::GetSystem() {
+    return system;
+}
+
+void Renderer::Start() {
+    system.Start();
+}
+
+void Renderer::Stop() {
+    system.Stop();
+}
+
+Result Renderer::RequestUpdate(std::span<const u8> input, std::span<u8> performance,
+                               std::span<u8> output) {
+    return system.Update(input, performance, output);
+}
+
+} // namespace AudioCore::AudioRenderer

src/audio_core/renderer/audio_renderer.h

@@ -0,0 +1,97 @@
+// SPDX-FileCopyrightText: Copyright 2022 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#include <span>
+
+#include "audio_core/renderer/system.h"
+#include "core/hle/service/audio/errors.h"
+
+namespace Core {
+class System;
+}
+
+namespace Kernel {
+class KTransferMemory;
+}
+
+namespace AudioCore {
+struct AudioRendererParameterInternal;
+
+namespace AudioRenderer {
+class Manager;
+
+/**
+ * Audio Renderer, wraps the main audio system and is mainly responsible for handling service calls.
+ */
+class Renderer {
+public:
+    explicit Renderer(Core::System& system, Manager& manager, Kernel::KEvent* rendered_event);
+
+    /**
+     * Initialize the renderer.
+     * Registers the system with the AudioRenderer::Manager, allocates workbuffers and initializes
+     * everything to a default state.
+     *
+     * @param params                  - Input parameters to initialize the system with.
+     * @param transfer_memory         - Game-supplied memory for all workbuffers. Unused.
+     * @param transfer_memory_size    - Size of the transfer memory. Unused.
+     * @param process_handle          - Process handle, also used for memory. Unused.
+     * @param applet_resource_user_id - Applet id for this renderer. Unused.
+     * @param session_id              - Session id of this renderer.
+     * @return Result code.
+     */
+    Result Initialize(const AudioRendererParameterInternal& params,
+                      Kernel::KTransferMemory* transfer_memory, u64 transfer_memory_size,
+                      u32 process_handle, u64 applet_resource_user_id, s32 session_id);
+
+    /**
+     * Finalize the renderer for shutdown.
+     */
+    void Finalize();
+
+    /**
+     * Get the renderer's system.
+     *
+     * @return Reference to the system.
+     */
+    System& GetSystem();
+
+    /**
+     * Start the renderer.
+     */
+    void Start();
+
+    /**
+     * Stop the renderer.
+     */
+    void Stop();
+
+    /**
+     * Update the audio renderer with new information.
+     * Called via RequestUpdate from the AudRen:U service.
+     *
+     * @param input       - Input buffer containing the new data.
+     * @param performance - Optional performance buffer for outputting performance metrics.
+     * @param output      - Output data from the renderer.
+     * @return Result code.
+     */
+    Result RequestUpdate(std::span<const u8> input, std::span<u8> performance,
+                         std::span<u8> output);
+
+private:
+    /// System core
+    Core::System& core;
+    /// Manager this renderer is registered with
+    Manager& manager;
+    /// Is the audio renderer initialized?
+    bool initialized{};
+    /// Is the system registered with the manager?
+    bool system_registered{};
+    /// Audio render system, main driver of audio rendering
+    System system;
+};
+
+} // namespace AudioRenderer
+} // namespace AudioCore

src/audio_core/renderer/behavior/behavior_info.cpp

@@ -0,0 +1,191 @@
+// SPDX-FileCopyrightText: Copyright 2022 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include "audio_core/common/feature_support.h"
+#include "audio_core/renderer/behavior/behavior_info.h"
+
+namespace AudioCore::AudioRenderer {
+
+BehaviorInfo::BehaviorInfo() : process_revision{CurrentRevision} {}
+
+u32 BehaviorInfo::GetProcessRevisionNum() const {
+    return process_revision;
+}
+
+u32 BehaviorInfo::GetProcessRevision() const {
+    return Common::MakeMagic('R', 'E', 'V',
+                             static_cast<char>(static_cast<u8>('0') + process_revision));
+}
+
+u32 BehaviorInfo::GetUserRevisionNum() const {
+    return user_revision;
+}
+
+u32 BehaviorInfo::GetUserRevision() const {
+    return Common::MakeMagic('R', 'E', 'V',
+                             static_cast<char>(static_cast<u8>('0') + user_revision));
+}
+
+void BehaviorInfo::SetUserLibRevision(const u32 user_revision_) {
+    user_revision = GetRevisionNum(user_revision_);
+}
+
+void BehaviorInfo::ClearError() {
+    error_count = 0;
+}
+
+void BehaviorInfo::AppendError(ErrorInfo& error) {
+    LOG_ERROR(Service_Audio, "Error during RequestUpdate, reporting code {:04X} address {:08X}",
+              error.error_code.raw, error.address);
+    if (error_count < MaxErrors) {
+        errors[error_count++] = error;
+    }
+}
+
+void BehaviorInfo::CopyErrorInfo(std::span<ErrorInfo> out_errors, u32& out_count) {
+    auto error_count_{std::min(error_count, MaxErrors)};
+    std::memset(out_errors.data(), 0, MaxErrors * sizeof(ErrorInfo));
+
+    for (size_t i = 0; i < error_count_; i++) {
+        out_errors[i] = errors[i];
+    }
+    out_count = error_count_;
+}
+
+void BehaviorInfo::UpdateFlags(const Flags flags_) {
+    flags = flags_;
+}
+
+bool BehaviorInfo::IsMemoryForceMappingEnabled() const {
+    return flags.IsMemoryForceMappingEnabled;
+}
+
+bool BehaviorInfo::IsAdpcmLoopContextBugFixed() const {
+    return CheckFeatureSupported(SupportTags::AdpcmLoopContextBugFix, user_revision);
+}
+
+bool BehaviorInfo::IsSplitterSupported() const {
+    return CheckFeatureSupported(SupportTags::Splitter, user_revision);
+}
+
+bool BehaviorInfo::IsSplitterBugFixed() const {
+    return CheckFeatureSupported(SupportTags::SplitterBugFix, user_revision);
+}
+
+bool BehaviorInfo::IsEffectInfoVersion2Supported() const {
+    return CheckFeatureSupported(SupportTags::EffectInfoVer2, user_revision);
+}
+
+bool BehaviorInfo::IsVariadicCommandBufferSizeSupported() const {
+    return CheckFeatureSupported(SupportTags::AudioRendererVariadicCommandBufferSize,
+                                 user_revision);
+}
+
+bool BehaviorInfo::IsWaveBufferVer2Supported() const {
+    return CheckFeatureSupported(SupportTags::WaveBufferVer2, user_revision);
+}
+
+bool BehaviorInfo::IsLongSizePreDelaySupported() const {
+    return CheckFeatureSupported(SupportTags::LongSizePreDelay, user_revision);
+}
+
+bool BehaviorInfo::IsCommandProcessingTimeEstimatorVersion2Supported() const {
+    return CheckFeatureSupported(SupportTags::CommandProcessingTimeEstimatorVersion2,
+                                 user_revision);
+}
+
+bool BehaviorInfo::IsCommandProcessingTimeEstimatorVersion3Supported() const {
+    return CheckFeatureSupported(SupportTags::CommandProcessingTimeEstimatorVersion3,
+                                 user_revision);
+}
+
+bool BehaviorInfo::IsCommandProcessingTimeEstimatorVersion4Supported() const {
+    return CheckFeatureSupported(SupportTags::CommandProcessingTimeEstimatorVersion4,
+                                 user_revision);
+}
+
+bool BehaviorInfo::IsCommandProcessingTimeEstimatorVersion5Supported() const {
+    return CheckFeatureSupported(SupportTags::CommandProcessingTimeEstimatorVersion4,
+                                 user_revision);
+}
+
+bool BehaviorInfo::IsAudioRendererProcessingTimeLimit70PercentSupported() const {
+    return CheckFeatureSupported(SupportTags::AudioRendererProcessingTimeLimit70Percent,
+                                 user_revision);
+}
+
+bool BehaviorInfo::IsAudioRendererProcessingTimeLimit75PercentSupported() const {
+    return CheckFeatureSupported(SupportTags::AudioRendererProcessingTimeLimit75Percent,
+                                 user_revision);
+}
+
+bool BehaviorInfo::IsAudioRendererProcessingTimeLimit80PercentSupported() const {
+    return CheckFeatureSupported(SupportTags::AudioRendererProcessingTimeLimit80Percent,
+                                 user_revision);
+}
+
+bool BehaviorInfo::IsFlushVoiceWaveBuffersSupported() const {
+    return CheckFeatureSupported(SupportTags::FlushVoiceWaveBuffers, user_revision);
+}
+
+bool BehaviorInfo::IsElapsedFrameCountSupported() const {
+    return CheckFeatureSupported(SupportTags::ElapsedFrameCount, user_revision);
+}
+
+bool BehaviorInfo::IsPerformanceMetricsDataFormatVersion2Supported() const {
+    return CheckFeatureSupported(SupportTags::PerformanceMetricsDataFormatVersion2, user_revision);
+}
+
+size_t BehaviorInfo::GetPerformanceMetricsDataFormat() const {
+    if (CheckFeatureSupported(SupportTags::PerformanceMetricsDataFormatVersion2, user_revision)) {
+        return 2;
+    }
+    return 1;
+}
+
+bool BehaviorInfo::IsVoicePitchAndSrcSkippedSupported() const {
+    return CheckFeatureSupported(SupportTags::VoicePitchAndSrcSkipped, user_revision);
+}
+
+bool BehaviorInfo::IsVoicePlayedSampleCountResetAtLoopPointSupported() const {
+    return CheckFeatureSupported(SupportTags::VoicePlayedSampleCountResetAtLoopPoint,
+                                 user_revision);
+}
+
+bool BehaviorInfo::IsBiquadFilterEffectStateClearBugFixed() const {
+    return CheckFeatureSupported(SupportTags::BiquadFilterEffectStateClearBugFix, user_revision);
+}
+
+bool BehaviorInfo::IsVolumeMixParameterPrecisionQ23Supported() const {
+    return CheckFeatureSupported(SupportTags::VolumeMixParameterPrecisionQ23, user_revision);
+}
+
+bool BehaviorInfo::UseBiquadFilterFloatProcessing() const {
+    return CheckFeatureSupported(SupportTags::BiquadFilterFloatProcessing, user_revision);
+}
+
+bool BehaviorInfo::IsMixInParameterDirtyOnlyUpdateSupported() const {
+    return CheckFeatureSupported(SupportTags::MixInParameterDirtyOnlyUpdate, user_revision);
+}
+
+bool BehaviorInfo::UseMultiTapBiquadFilterProcessing() const {
+    return CheckFeatureSupported(SupportTags::MultiTapBiquadFilterProcessing, user_revision);
+}
+
+bool BehaviorInfo::IsDeviceApiVersion2Supported() const {
+    return CheckFeatureSupported(SupportTags::DeviceApiVersion2, user_revision);
+}
+
+bool BehaviorInfo::IsDelayChannelMappingChanged() const {
+    return CheckFeatureSupported(SupportTags::DelayChannelMappingChange, user_revision);
+}
+
+bool BehaviorInfo::IsReverbChannelMappingChanged() const {
+    return CheckFeatureSupported(SupportTags::ReverbChannelMappingChange, user_revision);
+}
+
+bool BehaviorInfo::IsI3dl2ReverbChannelMappingChanged() const {
+    return CheckFeatureSupported(SupportTags::I3dl2ReverbChannelMappingChange, user_revision);
+}
+
+} // namespace AudioCore::AudioRenderer

src/audio_core/renderer/behavior/behavior_info.h

@@ -0,0 +1,376 @@
+// SPDX-FileCopyrightText: Copyright 2022 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#include <array>
+#include <span>
+
+#include "audio_core/common/common.h"
+#include "common/common_types.h"
+#include "core/hle/service/audio/errors.h"
+
+namespace AudioCore::AudioRenderer {
+/**
+ * Holds host and user revisions, checks whether render features can be enabled, and reports errors.
+ */
+class BehaviorInfo {
+    static constexpr u32 MaxErrors = 10;
+
+public:
+    struct ErrorInfo {
+        /* 0x00 */ Result error_code{0};
+        /* 0x04 */ u32 unk_04;
+        /* 0x08 */ CpuAddr address;
+    };
+    static_assert(sizeof(ErrorInfo) == 0x10, "BehaviorInfo::ErrorInfo has the wrong size!");
+
+    struct Flags {
+        u64 IsMemoryForceMappingEnabled : 1;
+    };
+
+    struct InParameter {
+        /* 0x00 */ u32 revision;
+        /* 0x08 */ Flags flags;
+    };
+    static_assert(sizeof(InParameter) == 0x10, "BehaviorInfo::InParameter has the wrong size!");
+
+    struct OutStatus {
+        /* 0x00 */ std::array<ErrorInfo, MaxErrors> errors;
+        /* 0xA0 */ u32 error_count;
+        /* 0xA4 */ char unkA4[0xC];
+    };
+    static_assert(sizeof(OutStatus) == 0xB0, "BehaviorInfo::OutStatus has the wrong size!");
+
+    BehaviorInfo();
+
+    /**
+     * Get the host revision as a number.
+     *
+     * @return The host revision.
+     */
+    u32 GetProcessRevisionNum() const;
+
+    /**
+     * Get the host revision in chars, e.g REV8.
+     * Rev 10 and higher use the ascii characters above 9.
+     * E.g:
+     *     Rev 10 = REV:
+     *     Rev 11 = REV;
+     *
+     * @return The host revision.
+     */
+    u32 GetProcessRevision() const;
+
+    /**
+     * Get the user revision as a number.
+     *
+     * @return The user revision.
+     */
+    u32 GetUserRevisionNum() const;
+
+    /**
+     * Get the user revision in chars, e.g REV8.
+     * Rev 10 and higher use the ascii characters above 9. REV: REV; etc.
+     *
+     * @return The user revision.
+     */
+    u32 GetUserRevision() const;
+
+    /**
+     * Set the user revision.
+     *
+     * @param user_revision - The user's revision.
+     */
+    void SetUserLibRevision(u32 user_revision);
+
+    /**
+     * Clear the current error count.
+     */
+    void ClearError();
+
+    /**
+     * Append an error to the error list.
+     *
+     * @param error - The new error.
+     */
+    void AppendError(ErrorInfo& error);
+
+    /**
+     * Copy errors to the given output container.
+     *
+     * @param out_errors - Output container to receive the errors.
+     * @param out_count  - The number of errors written.
+     */
+    void CopyErrorInfo(std::span<ErrorInfo> out_errors, u32& out_count);
+
+    /**
+     * Update the behaviour flags.
+     *
+     * @param flags - New flags to use.
+     */
+    void UpdateFlags(Flags flags);
+
+    /**
+     * Check if memory pools can be forcibly mapped.
+     *
+     * @return True if enabled, otherwise false.
+     */
+    bool IsMemoryForceMappingEnabled() const;
+
+    /**
+     * Check if the ADPCM context bug is fixed.
+     * The ADPCM context was not being sent to the AudioRenderer, leading to incorrect scaling being
+     * used.
+     *
+     * @return True if fixed, otherwise false.
+     */
+    bool IsAdpcmLoopContextBugFixed() const;
+
+    /**
+     * Check if the splitter is supported.
+     *
+     * @return True if supported, otherwise false.
+     */
+    bool IsSplitterSupported() const;
+
+    /**
+     * Check if the splitter bug is fixed.
+     * Update is given the wrong number of splitter destinations, leading to invalid data
+     * being processed.
+     *
+     * @return True if supported, otherwise false.
+     */
+    bool IsSplitterBugFixed() const;
+
+    /**
+     * Check if effects version 2 are supported.
+     * This gives support for returning effect states from the AudioRenderer, currently only used
+     * for Limiter statistics.
+     *
+     * @return True if supported, otherwise false.
+     */
+    bool IsEffectInfoVersion2Supported() const;
+
+    /**
+     * Check if a variadic command buffer is supported.
+     * As of Rev 5 with the added optional performance metric logging, the command
+     * buffer can be a variable size, so take that into account for calcualting its size.
+     *
+     * @return True if supported, otherwise false.
+     */
+    bool IsVariadicCommandBufferSizeSupported() const;
+
+    /**
+     * Check if wave buffers version 2 are supported.
+     * See WaveBufferVersion1 and WaveBufferVersion2.
+     *
+     * @return True if supported, otherwise false.
+     */
+    bool IsWaveBufferVer2Supported() const;
+
+    /**
+     * Check if long size pre delay is supported.
+     * This allows a longer initial delay time for the Reverb command.
+     *
+     * @return True if supported, otherwise false.
+     */
+    bool IsLongSizePreDelaySupported() const;
+
+    /**
+     * Check if the command time estimator version 2 is supported.
+     *
+     * @return True if supported, otherwise false.
+     */
+    bool IsCommandProcessingTimeEstimatorVersion2Supported() const;
+
+    /**
+     * Check if the command time estimator version 3 is supported.
+     *
+     * @return True if supported, otherwise false.
+     */
+    bool IsCommandProcessingTimeEstimatorVersion3Supported() const;
+
+    /**
+     * Check if the command time estimator version 4 is supported.
+     *
+     * @return True if supported, otherwise false.
+     */
+    bool IsCommandProcessingTimeEstimatorVersion4Supported() const;
+
+    /**
+     * Check if the command time estimator version 5 is supported.
+     *
+     * @return True if supported, otherwise false.
+     */
+    bool IsCommandProcessingTimeEstimatorVersion5Supported() const;
+
+    /**
+     * Check if the AudioRenderer can use up to 70% of the allocated processing timeslice.
+     *
+     * @return True if supported, otherwise false.
+     */
+    bool IsAudioRendererProcessingTimeLimit70PercentSupported() const;
+
+    /**
+     * Check if the AudioRenderer can use up to 75% of the allocated processing timeslice.
+     *
+     * @return True if supported, otherwise false.
+     */
+    bool IsAudioRendererProcessingTimeLimit75PercentSupported() const;
+
+    /**
+     * Check if the AudioRenderer can use up to 80% of the allocated processing timeslice.
+     *
+     * @return True if supported, otherwise false.
+     */
+    bool IsAudioRendererProcessingTimeLimit80PercentSupported() const;
+
+    /**
+     * Check if voice flushing is supported
+     * This allowws low-priority voices to be dropped if the AudioRenderer is running behind.
+     *
+     * @return True if supported, otherwise false.
+     */
+    bool IsFlushVoiceWaveBuffersSupported() const;
+
+    /**
+     * Check if counting the number of elapsed frames is supported.
+     * This adds extra output to RequestUpdate, returning the number of times the AudioRenderer
+     * processed a command list.
+     *
+     * @return True if supported, otherwise false.
+     */
+    bool IsElapsedFrameCountSupported() const;
+
+    /**
+     * Check if performance metrics version 2 are supported.
+     * This adds extra output to RequestUpdate, returning the number of times the AudioRenderer
+     * (Unused?).
+     *
+     * @return True if supported, otherwise false.
+     */
+    bool IsPerformanceMetricsDataFormatVersion2Supported() const;
+
+    /**
+     * Get the supported performance metrics version.
+     * Version 2 logs some extra fields in output, such as number of voices dropped,
+     * processing start time, if the AudioRenderer exceeded its time, etc.
+     *
+     * @return Version supported, either 1 or 2.
+     */
+    size_t GetPerformanceMetricsDataFormat() const;
+
+    /**
+     * Check if skipping voice pitch and sample rate conversion is supported.
+     * This speeds up the data source commands by skipping resampling if unwanted.
+     * See AudioCore::AudioRenderer::DecodeFromWaveBuffers
+     *
+     * @return True if supported, otherwise false.
+     */
+    bool IsVoicePitchAndSrcSkippedSupported() const;
+
+    /**
+     * Check if resetting played sample count at loop points is supported.
+     * This resets the number of samples played in a voice state when a loop point is reached.
+     * See AudioCore::AudioRenderer::DecodeFromWaveBuffers
+     *
+     * @return True if supported, otherwise false.
+     */
+    bool IsVoicePlayedSampleCountResetAtLoopPointSupported() const;
+
+    /**
+     * Check if the clear state bug for biquad filters is fixed.
+     * The biquad state was not marked as needing re-initialisation when the effect was updated, it
+     * was only initialized once with a new effect.
+     *
+     * @return True if fixed, otherwise false.
+     */
+    bool IsBiquadFilterEffectStateClearBugFixed() const;
+
+    /**
+     * Check if Q23 precision is supported for fixed point.
+     *
+     * @return True if supported, otherwise false.
+     */
+    bool IsVolumeMixParameterPrecisionQ23Supported() const;
+
+    /**
+     * Check if float processing for biuad filters is supported.
+     *
+     * @return True if supported, otherwise false.
+     */
+    bool UseBiquadFilterFloatProcessing() const;
+
+    /**
+     * Check if dirty-only mix updates are supported.
+     * This saves a lot of buffer size as mixes can be large and not change much.
+     *
+     * @return True if supported, otherwise false.
+     */
+    bool IsMixInParameterDirtyOnlyUpdateSupported() const;
+
+    /**
+     * Check if multi-tap biquad filters are supported.
+     *
+     * @return True if supported, otherwise false.
+     */
+    bool UseMultiTapBiquadFilterProcessing() const;
+
+    /**
+     * Check if device api version 2 is supported.
+     * In the SDK but not in any sysmodule? Not sure, left here for completeness anyway.
+     *
+     * @return True if supported, otherwise false.
+     */
+    bool IsDeviceApiVersion2Supported() const;
+
+    /**
+     * Check if new channel mappings are used for Delay commands.
+     * Older commands used:
+     *   front left/front right/back left/back right/center/lfe
+     * Whereas everywhere else in the code uses:
+     *   front left/front right/center/lfe/back left/back right
+     * This corrects that and makes everything standardised.
+     *
+     * @return True if supported, otherwise false.
+     */
+    bool IsDelayChannelMappingChanged() const;
+
+    /**
+     * Check if new channel mappings are used for Reverb commands.
+     * Older commands used:
+     *   front left/front right/back left/back right/center/lfe
+     * Whereas everywhere else in the code uses:
+     *   front left/front right/center/lfe/back left/back right
+     * This corrects that and makes everything standardised.
+     *
+     * @return True if supported, otherwise false.
+     */
+    bool IsReverbChannelMappingChanged() const;
+
+    /**
+     * Check if new channel mappings are used for I3dl2Reverb commands.
+     * Older commands used:
+     *   front left/front right/back left/back right/center/lfe
+     * Whereas everywhere else in the code uses:
+     *   front left/front right/center/lfe/back left/back right
+     * This corrects that and makes everything standardised.
+     *
+     * @return True if supported, otherwise false.
+     */
+    bool IsI3dl2ReverbChannelMappingChanged() const;
+
+    /// Host version
+    u32 process_revision;
+    /// User version
+    u32 user_revision{};
+    /// Behaviour flags
+    Flags flags{};
+    /// Errors generated and reported during Update
+    std::array<ErrorInfo, MaxErrors> errors{};
+    /// Error count
+    u32 error_count{};
+};
+
+} // namespace AudioCore::AudioRenderer

src/audio_core/renderer/behavior/info_updater.cpp

@@ -0,0 +1,539 @@
+// SPDX-FileCopyrightText: Copyright 2022 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include "audio_core/common/feature_support.h"
+#include "audio_core/renderer/behavior/behavior_info.h"
+#include "audio_core/renderer/behavior/info_updater.h"
+#include "audio_core/renderer/effect/effect_context.h"
+#include "audio_core/renderer/effect/effect_reset.h"
+#include "audio_core/renderer/memory/memory_pool_info.h"
+#include "audio_core/renderer/mix/mix_context.h"
+#include "audio_core/renderer/performance/performance_manager.h"
+#include "audio_core/renderer/sink/circular_buffer_sink_info.h"
+#include "audio_core/renderer/sink/device_sink_info.h"
+#include "audio_core/renderer/sink/sink_context.h"
+#include "audio_core/renderer/splitter/splitter_context.h"
+#include "audio_core/renderer/voice/voice_context.h"
+
+namespace AudioCore::AudioRenderer {
+
+InfoUpdater::InfoUpdater(std::span<const u8> input_, std::span<u8> output_,
+                         const u32 process_handle_, BehaviorInfo& behaviour_)
+    : input{input_.data() + sizeof(UpdateDataHeader)},
+      input_origin{input_}, output{output_.data() + sizeof(UpdateDataHeader)},
+      output_origin{output_}, in_header{reinterpret_cast<const UpdateDataHeader*>(
+                                  input_origin.data())},
+      out_header{reinterpret_cast<UpdateDataHeader*>(output_origin.data())},
+      expected_input_size{input_.size()}, expected_output_size{output_.size()},
+      process_handle{process_handle_}, behaviour{behaviour_} {
+    std::construct_at<UpdateDataHeader>(out_header, behaviour.GetProcessRevision());
+}
+
+Result InfoUpdater::UpdateVoiceChannelResources(VoiceContext& voice_context) {
+    const auto voice_count{voice_context.GetCount()};
+    std::span<const VoiceChannelResource::InParameter> in_params{
+        reinterpret_cast<const VoiceChannelResource::InParameter*>(input), voice_count};
+
+    for (u32 i = 0; i < voice_count; i++) {
+        auto& resource{voice_context.GetChannelResource(i)};
+        resource.in_use = in_params[i].in_use;
+        if (in_params[i].in_use) {
+            resource.mix_volumes = in_params[i].mix_volumes;
+        }
+    }
+
+    const auto consumed_input_size{voice_count *
+                                   static_cast<u32>(sizeof(VoiceChannelResource::InParameter))};
+    if (consumed_input_size != in_header->voice_resources_size) {
+        LOG_ERROR(Service_Audio,
+                  "Consumed an incorrect voice resource size, header size={}, consumed={}",
+                  in_header->voice_resources_size, consumed_input_size);
+        return Service::Audio::ERR_INVALID_UPDATE_DATA;
+    }
+
+    input += consumed_input_size;
+    return ResultSuccess;
+}
+
+Result InfoUpdater::UpdateVoices(VoiceContext& voice_context,
+                                 std::span<MemoryPoolInfo> memory_pools,
+                                 const u32 memory_pool_count) {
+    const PoolMapper pool_mapper(process_handle, memory_pools, memory_pool_count,
+                                 behaviour.IsMemoryForceMappingEnabled());
+    const auto voice_count{voice_context.GetCount()};
+    std::span<const VoiceInfo::InParameter> in_params{
+        reinterpret_cast<const VoiceInfo::InParameter*>(input), voice_count};
+    std::span<VoiceInfo::OutStatus> out_params{reinterpret_cast<VoiceInfo::OutStatus*>(output),
+                                               voice_count};
+
+    for (u32 i = 0; i < voice_count; i++) {
+        auto& voice_info{voice_context.GetInfo(i)};
+        voice_info.in_use = false;
+    }
+
+    u32 new_voice_count{0};
+
+    for (u32 i = 0; i < voice_count; i++) {
+        const auto& in_param{in_params[i]};
+        std::array<VoiceState*, MaxChannels> voice_states{};
+
+        if (!in_param.in_use) {
+            continue;
+        }
+
+        auto& voice_info{voice_context.GetInfo(in_param.id)};
+
+        for (u32 channel = 0; channel < in_param.channel_count; channel++) {
+            voice_states[channel] = &voice_context.GetState(in_param.channel_resource_ids[channel]);
+        }
+
+        if (in_param.is_new) {
+            voice_info.Initialize();
+
+            for (u32 channel = 0; channel < in_param.channel_count; channel++) {
+                std::memset(voice_states[channel], 0, sizeof(VoiceState));
+            }
+        }
+
+        BehaviorInfo::ErrorInfo update_error{};
+        voice_info.UpdateParameters(update_error, in_param, pool_mapper, behaviour);
+
+        if (!update_error.error_code.IsSuccess()) {
+            behaviour.AppendError(update_error);
+        }
+
+        std::array<std::array<BehaviorInfo::ErrorInfo, 2>, MaxWaveBuffers> wavebuffer_errors{};
+        voice_info.UpdateWaveBuffers(wavebuffer_errors, MaxWaveBuffers * 2, in_param, voice_states,
+                                     pool_mapper, behaviour);
+
+        for (auto& wavebuffer_error : wavebuffer_errors) {
+            for (auto& error : wavebuffer_error) {
+                if (error.error_code.IsError()) {
+                    behaviour.AppendError(error);
+                }
+            }
+        }
+
+        voice_info.WriteOutStatus(out_params[i], in_param, voice_states);
+        new_voice_count += in_param.channel_count;
+    }
+
+    auto consumed_input_size{voice_count * static_cast<u32>(sizeof(VoiceInfo::InParameter))};
+    auto consumed_output_size{voice_count * static_cast<u32>(sizeof(VoiceInfo::OutStatus))};
+    if (consumed_input_size != in_header->voices_size) {
+        LOG_ERROR(Service_Audio, "Consumed an incorrect voices size, header size={}, consumed={}",
+                  in_header->voices_size, consumed_input_size);
+        return Service::Audio::ERR_INVALID_UPDATE_DATA;
+    }
+
+    out_header->voices_size = consumed_output_size;
+    out_header->size += consumed_output_size;
+    input += consumed_input_size;
+    output += consumed_output_size;
+
+    voice_context.SetActiveCount(new_voice_count);
+
+    return ResultSuccess;
+}
+
+Result InfoUpdater::UpdateEffects(EffectContext& effect_context, const bool renderer_active,
+                                  std::span<MemoryPoolInfo> memory_pools,
+                                  const u32 memory_pool_count) {
+    if (behaviour.IsEffectInfoVersion2Supported()) {
+        return UpdateEffectsVersion2(effect_context, renderer_active, memory_pools,
+                                     memory_pool_count);
+    } else {
+        return UpdateEffectsVersion1(effect_context, renderer_active, memory_pools,
+                                     memory_pool_count);
+    }
+}
+
+Result InfoUpdater::UpdateEffectsVersion1(EffectContext& effect_context, const bool renderer_active,
+                                          std::span<MemoryPoolInfo> memory_pools,
+                                          const u32 memory_pool_count) {
+    PoolMapper pool_mapper(process_handle, memory_pools, memory_pool_count,
+                           behaviour.IsMemoryForceMappingEnabled());
+
+    const auto effect_count{effect_context.GetCount()};
+
+    std::span<const EffectInfoBase::InParameterVersion1> in_params{
+        reinterpret_cast<const EffectInfoBase::InParameterVersion1*>(input), effect_count};
+    std::span<EffectInfoBase::OutStatusVersion1> out_params{
+        reinterpret_cast<EffectInfoBase::OutStatusVersion1*>(output), effect_count};
+
+    for (u32 i = 0; i < effect_count; i++) {
+        auto effect_info{&effect_context.GetInfo(i)};
+        if (effect_info->GetType() != in_params[i].type) {
+            effect_info->ForceUnmapBuffers(pool_mapper);
+            ResetEffect(effect_info, in_params[i].type);
+        }
+
+        BehaviorInfo::ErrorInfo error_info{};
+        effect_info->Update(error_info, in_params[i], pool_mapper);
+        if (error_info.error_code.IsError()) {
+            behaviour.AppendError(error_info);
+        }
+
+        effect_info->StoreStatus(out_params[i], renderer_active);
+    }
+
+    auto consumed_input_size{effect_count *
+                             static_cast<u32>(sizeof(EffectInfoBase::InParameterVersion1))};
+    auto consumed_output_size{effect_count *
+                              static_cast<u32>(sizeof(EffectInfoBase::OutStatusVersion1))};
+    if (consumed_input_size != in_header->effects_size) {
+        LOG_ERROR(Service_Audio, "Consumed an incorrect effects size, header size={}, consumed={}",
+                  in_header->effects_size, consumed_input_size);
+        return Service::Audio::ERR_INVALID_UPDATE_DATA;
+    }
+
+    out_header->effects_size = consumed_output_size;
+    out_header->size += consumed_output_size;
+    input += consumed_input_size;
+    output += consumed_output_size;
+
+    return ResultSuccess;
+}
+
+Result InfoUpdater::UpdateEffectsVersion2(EffectContext& effect_context, const bool renderer_active,
+                                          std::span<MemoryPoolInfo> memory_pools,
+                                          const u32 memory_pool_count) {
+    PoolMapper pool_mapper(process_handle, memory_pools, memory_pool_count,
+                           behaviour.IsMemoryForceMappingEnabled());
+
+    const auto effect_count{effect_context.GetCount()};
+
+    std::span<const EffectInfoBase::InParameterVersion2> in_params{
+        reinterpret_cast<const EffectInfoBase::InParameterVersion2*>(input), effect_count};
+    std::span<EffectInfoBase::OutStatusVersion2> out_params{
+        reinterpret_cast<EffectInfoBase::OutStatusVersion2*>(output), effect_count};
+
+    for (u32 i = 0; i < effect_count; i++) {
+        auto effect_info{&effect_context.GetInfo(i)};
+        if (effect_info->GetType() != in_params[i].type) {
+            effect_info->ForceUnmapBuffers(pool_mapper);
+            ResetEffect(effect_info, in_params[i].type);
+        }
+
+        BehaviorInfo::ErrorInfo error_info{};
+        effect_info->Update(error_info, in_params[i], pool_mapper);
+
+        if (error_info.error_code.IsError()) {
+            behaviour.AppendError(error_info);
+        }
+
+        effect_info->StoreStatus(out_params[i], renderer_active);
+
+        if (in_params[i].is_new) {
+            effect_info->InitializeResultState(effect_context.GetDspSharedResultState(i));
+            effect_info->InitializeResultState(effect_context.GetResultState(i));
+        }
+        effect_info->UpdateResultState(out_params[i].result_state,
+                                       effect_context.GetResultState(i));
+    }
+
+    auto consumed_input_size{effect_count *
+                             static_cast<u32>(sizeof(EffectInfoBase::InParameterVersion2))};
+    auto consumed_output_size{effect_count *
+                              static_cast<u32>(sizeof(EffectInfoBase::OutStatusVersion2))};
+    if (consumed_input_size != in_header->effects_size) {
+        LOG_ERROR(Service_Audio, "Consumed an incorrect effects size, header size={}, consumed={}",
+                  in_header->effects_size, consumed_input_size);
+        return Service::Audio::ERR_INVALID_UPDATE_DATA;
+    }
+
+    out_header->effects_size = consumed_output_size;
+    out_header->size += consumed_output_size;
+    input += consumed_input_size;
+    output += consumed_output_size;
+
+    return ResultSuccess;
+}
+
+Result InfoUpdater::UpdateMixes(MixContext& mix_context, const u32 mix_buffer_count,
+                                EffectContext& effect_context, SplitterContext& splitter_context) {
+    s32 mix_count{0};
+    u32 consumed_input_size{0};
+
+    if (behaviour.IsMixInParameterDirtyOnlyUpdateSupported()) {
+        auto in_dirty_params{reinterpret_cast<const MixInfo::InDirtyParameter*>(input)};
+        mix_count = in_dirty_params->count;
+        input += sizeof(MixInfo::InDirtyParameter);
+        consumed_input_size = static_cast<u32>(sizeof(MixInfo::InDirtyParameter) +
+                                               mix_count * sizeof(MixInfo::InParameter));
+    } else {
+        mix_count = mix_context.GetCount();
+        consumed_input_size = static_cast<u32>(mix_count * sizeof(MixInfo::InParameter));
+    }
+
+    if (mix_buffer_count == 0) {
+        return Service::Audio::ERR_INVALID_UPDATE_DATA;
+    }
+
+    std::span<const MixInfo::InParameter> in_params{
+        reinterpret_cast<const MixInfo::InParameter*>(input), static_cast<size_t>(mix_count)};
+
+    u32 total_buffer_count{0};
+    for (s32 i = 0; i < mix_count; i++) {
+        const auto& params{in_params[i]};
+
+        if (params.in_use) {
+            total_buffer_count += params.buffer_count;
+            if (params.dest_mix_id > static_cast<s32>(mix_context.GetCount()) &&
+                params.dest_mix_id != UnusedMixId && params.mix_id != FinalMixId) {
+                return Service::Audio::ERR_INVALID_UPDATE_DATA;
+            }
+        }
+    }
+
+    if (total_buffer_count > mix_buffer_count) {
+        return Service::Audio::ERR_INVALID_UPDATE_DATA;
+    }
+
+    bool mix_dirty{false};
+    for (s32 i = 0; i < mix_count; i++) {
+        const auto& params{in_params[i]};
+
+        s32 mix_id{i};
+        if (behaviour.IsMixInParameterDirtyOnlyUpdateSupported()) {
+            mix_id = params.mix_id;
+        }
+
+        auto mix_info{mix_context.GetInfo(mix_id)};
+        if (mix_info->in_use != params.in_use) {
+            mix_info->in_use = params.in_use;
+            if (!params.in_use) {
+                mix_info->ClearEffectProcessingOrder();
+            }
+            mix_dirty = true;
+        }
+
+        if (params.in_use) {
+            mix_dirty |= mix_info->Update(mix_context.GetEdgeMatrix(), params, effect_context,
+                                          splitter_context, behaviour);
+        }
+    }
+
+    if (mix_dirty) {
+        if (behaviour.IsSplitterSupported() && splitter_context.UsingSplitter()) {
+            if (!mix_context.TSortInfo(splitter_context)) {
+                return Service::Audio::ERR_INVALID_UPDATE_DATA;
+            }
+        } else {
+            mix_context.SortInfo();
+        }
+    }
+
+    if (consumed_input_size != in_header->mix_size) {
+        LOG_ERROR(Service_Audio, "Consumed an incorrect mixes size, header size={}, consumed={}",
+                  in_header->mix_size, consumed_input_size);
+        return Service::Audio::ERR_INVALID_UPDATE_DATA;
+    }
+
+    input += mix_count * sizeof(MixInfo::InParameter);
+
+    return ResultSuccess;
+}
+
+Result InfoUpdater::UpdateSinks(SinkContext& sink_context, std::span<MemoryPoolInfo> memory_pools,
+                                const u32 memory_pool_count) {
+    PoolMapper pool_mapper(process_handle, memory_pools, memory_pool_count,
+                           behaviour.IsMemoryForceMappingEnabled());
+
+    std::span<const SinkInfoBase::InParameter> in_params{
+        reinterpret_cast<const SinkInfoBase::InParameter*>(input), memory_pool_count};
+    std::span<SinkInfoBase::OutStatus> out_params{
+        reinterpret_cast<SinkInfoBase::OutStatus*>(output), memory_pool_count};
+
+    const auto sink_count{sink_context.GetCount()};
+
+    for (u32 i = 0; i < sink_count; i++) {
+        const auto& params{in_params[i]};
+        auto sink_info{sink_context.GetInfo(i)};
+
+        if (sink_info->GetType() != params.type) {
+            sink_info->CleanUp();
+            switch (params.type) {
+            case SinkInfoBase::Type::Invalid:
+                std::construct_at<SinkInfoBase>(reinterpret_cast<SinkInfoBase*>(sink_info));
+                break;
+            case SinkInfoBase::Type::DeviceSink:
+                std::construct_at<DeviceSinkInfo>(reinterpret_cast<DeviceSinkInfo*>(sink_info));
+                break;
+            case SinkInfoBase::Type::CircularBufferSink:
+                std::construct_at<CircularBufferSinkInfo>(
+                    reinterpret_cast<CircularBufferSinkInfo*>(sink_info));
+                break;
+            default:
+                LOG_ERROR(Service_Audio, "Invalid sink type {}", static_cast<u32>(params.type));
+                break;
+            }
+        }
+
+        BehaviorInfo::ErrorInfo error_info{};
+        sink_info->Update(error_info, out_params[i], params, pool_mapper);
+
+        if (error_info.error_code.IsError()) {
+            behaviour.AppendError(error_info);
+        }
+    }
+
+    const auto consumed_input_size{sink_count *
+                                   static_cast<u32>(sizeof(SinkInfoBase::InParameter))};
+    const auto consumed_output_size{sink_count * static_cast<u32>(sizeof(SinkInfoBase::OutStatus))};
+    if (consumed_input_size != in_header->sinks_size) {
+        LOG_ERROR(Service_Audio, "Consumed an incorrect sinks size, header size={}, consumed={}",
+                  in_header->sinks_size, consumed_input_size);
+        return Service::Audio::ERR_INVALID_UPDATE_DATA;
+    }
+
+    input += consumed_input_size;
+    output += consumed_output_size;
+    out_header->sinks_size = consumed_output_size;
+    out_header->size += consumed_output_size;
+
+    return ResultSuccess;
+}
+
+Result InfoUpdater::UpdateMemoryPools(std::span<MemoryPoolInfo> memory_pools,
+                                      const u32 memory_pool_count) {
+    PoolMapper pool_mapper(process_handle, memory_pools, memory_pool_count,
+                           behaviour.IsMemoryForceMappingEnabled());
+    std::span<const MemoryPoolInfo::InParameter> in_params{
+        reinterpret_cast<const MemoryPoolInfo::InParameter*>(input), memory_pool_count};
+    std::span<MemoryPoolInfo::OutStatus> out_params{
+        reinterpret_cast<MemoryPoolInfo::OutStatus*>(output), memory_pool_count};
+
+    for (size_t i = 0; i < memory_pool_count; i++) {
+        auto state{pool_mapper.Update(memory_pools[i], in_params[i], out_params[i])};
+        if (state != MemoryPoolInfo::ResultState::Success &&
+            state != MemoryPoolInfo::ResultState::BadParam &&
+            state != MemoryPoolInfo::ResultState::MapFailed &&
+            state != MemoryPoolInfo::ResultState::InUse) {
+            LOG_WARNING(Service_Audio, "Invalid ResultState from updating memory pools");
+            return Service::Audio::ERR_INVALID_UPDATE_DATA;
+        }
+    }
+
+    const auto consumed_input_size{memory_pool_count *
+                                   static_cast<u32>(sizeof(MemoryPoolInfo::InParameter))};
+    const auto consumed_output_size{memory_pool_count *
+                                    static_cast<u32>(sizeof(MemoryPoolInfo::OutStatus))};
+    if (consumed_input_size != in_header->memory_pool_size) {
+        LOG_ERROR(Service_Audio,
+                  "Consumed an incorrect memory pool size, header size={}, consumed={}",
+                  in_header->memory_pool_size, consumed_input_size);
+        return Service::Audio::ERR_INVALID_UPDATE_DATA;
+    }
+
+    input += consumed_input_size;
+    output += consumed_output_size;
+    out_header->memory_pool_size = consumed_output_size;
+    out_header->size += consumed_output_size;
+    return ResultSuccess;
+}
+
+Result InfoUpdater::UpdatePerformanceBuffer(std::span<u8> performance_output,
+                                            const u64 performance_output_size,
+                                            PerformanceManager* performance_manager) {
+    auto in_params{reinterpret_cast<const PerformanceManager::InParameter*>(input)};
+    auto out_params{reinterpret_cast<PerformanceManager::OutStatus*>(output)};
+
+    if (performance_manager != nullptr) {
+        out_params->history_size =
+            performance_manager->CopyHistories(performance_output.data(), performance_output_size);
+        performance_manager->SetDetailTarget(in_params->target_node_id);
+    } else {
+        out_params->history_size = 0;
+    }
+
+    const auto consumed_input_size{static_cast<u32>(sizeof(PerformanceManager::InParameter))};
+    const auto consumed_output_size{static_cast<u32>(sizeof(PerformanceManager::OutStatus))};
+    if (consumed_input_size != in_header->performance_buffer_size) {
+        LOG_ERROR(Service_Audio,
+                  "Consumed an incorrect performance size, header size={}, consumed={}",
+                  in_header->performance_buffer_size, consumed_input_size);
+        return Service::Audio::ERR_INVALID_UPDATE_DATA;
+    }
+
+    input += consumed_input_size;
+    output += consumed_output_size;
+    out_header->performance_buffer_size = consumed_output_size;
+    out_header->size += consumed_output_size;
+    return ResultSuccess;
+}
+
+Result InfoUpdater::UpdateBehaviorInfo(BehaviorInfo& behaviour_) {
+    const auto in_params{reinterpret_cast<const BehaviorInfo::InParameter*>(input)};
+
+    if (!CheckValidRevision(in_params->revision)) {
+        return Service::Audio::ERR_INVALID_UPDATE_DATA;
+    }
+
+    if (in_params->revision != behaviour_.GetUserRevision()) {
+        return Service::Audio::ERR_INVALID_UPDATE_DATA;
+    }
+
+    behaviour_.ClearError();
+    behaviour_.UpdateFlags(in_params->flags);
+
+    if (in_header->behaviour_size != sizeof(BehaviorInfo::InParameter)) {
+        return Service::Audio::ERR_INVALID_UPDATE_DATA;
+    }
+
+    input += sizeof(BehaviorInfo::InParameter);
+    return ResultSuccess;
+}
+
+Result InfoUpdater::UpdateErrorInfo(BehaviorInfo& behaviour_) {
+    auto out_params{reinterpret_cast<BehaviorInfo::OutStatus*>(output)};
+    behaviour_.CopyErrorInfo(out_params->errors, out_params->error_count);
+
+    const auto consumed_output_size{static_cast<u32>(sizeof(BehaviorInfo::OutStatus))};
+
+    output += consumed_output_size;
+    out_header->behaviour_size = consumed_output_size;
+    out_header->size += consumed_output_size;
+    return ResultSuccess;
+}
+
+Result InfoUpdater::UpdateSplitterInfo(SplitterContext& splitter_context) {
+    u32 consumed_size{0};
+    if (!splitter_context.Update(input, consumed_size)) {
+        return Service::Audio::ERR_INVALID_UPDATE_DATA;
+    }
+
+    input += consumed_size;
+
+    return ResultSuccess;
+}
+
+Result InfoUpdater::UpdateRendererInfo(const u64 elapsed_frames) {
+    struct RenderInfo {
+        /* 0x00 */ u64 frames_elapsed;
+        /* 0x08 */ char unk08[0x8];
+    };
+    static_assert(sizeof(RenderInfo) == 0x10, "RenderInfo has the wrong size!");
+
+    auto out_params{reinterpret_cast<RenderInfo*>(output)};
+    out_params->frames_elapsed = elapsed_frames;
+
+    const auto consumed_output_size{static_cast<u32>(sizeof(RenderInfo))};
+
+    output += consumed_output_size;
+    out_header->render_info_size = consumed_output_size;
+    out_header->size += consumed_output_size;
+
+    return ResultSuccess;
+}
+
+Result InfoUpdater::CheckConsumedSize() {
+    if (CpuAddr(input) - CpuAddr(input_origin.data()) != expected_input_size) {
+        return Service::Audio::ERR_INVALID_UPDATE_DATA;
+    } else if (CpuAddr(output) - CpuAddr(output_origin.data()) != expected_output_size) {
+        return Service::Audio::ERR_INVALID_UPDATE_DATA;
+    }
+    return ResultSuccess;
+}
+
+} // namespace AudioCore::AudioRenderer

src/audio_core/renderer/behavior/info_updater.h

@@ -0,0 +1,205 @@
+// SPDX-FileCopyrightText: Copyright 2022 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#include <span>
+
+#include "common/common_types.h"
+#include "core/hle/service/audio/errors.h"
+
+namespace AudioCore::AudioRenderer {
+class BehaviorInfo;
+class VoiceContext;
+class MixContext;
+class SinkContext;
+class SplitterContext;
+class EffectContext;
+class MemoryPoolInfo;
+class PerformanceManager;
+
+class InfoUpdater {
+    struct UpdateDataHeader {
+        explicit UpdateDataHeader(u32 revision_) : revision{revision_} {}
+
+        /* 0x00 */ u32 revision;
+        /* 0x04 */ u32 behaviour_size{};
+        /* 0x08 */ u32 memory_pool_size{};
+        /* 0x0C */ u32 voices_size{};
+        /* 0x10 */ u32 voice_resources_size{};
+        /* 0x14 */ u32 effects_size{};
+        /* 0x18 */ u32 mix_size{};
+        /* 0x1C */ u32 sinks_size{};
+        /* 0x20 */ u32 performance_buffer_size{};
+        /* 0x24 */ char unk24[4];
+        /* 0x28 */ u32 render_info_size{};
+        /* 0x2C */ char unk2C[0x10];
+        /* 0x3C */ u32 size{sizeof(UpdateDataHeader)};
+    };
+    static_assert(sizeof(UpdateDataHeader) == 0x40, "UpdateDataHeader has the wrong size!");
+
+public:
+    explicit InfoUpdater(std::span<const u8> input, std::span<u8> output, u32 process_handle,
+                         BehaviorInfo& behaviour);
+
+    /**
+     * Update the voice channel resources.
+     *
+     * @param voice_context - Voice context to update.
+     * @return Result code.
+     */
+    Result UpdateVoiceChannelResources(VoiceContext& voice_context);
+
+    /**
+     * Update voices.
+     *
+     * @param voice_context     - Voice context to update.
+     * @param memory_pools      - Memory pools to use for these voices.
+     * @param memory_pool_count - Number of memory pools.
+     * @return Result code.
+     */
+    Result UpdateVoices(VoiceContext& voice_context, std::span<MemoryPoolInfo> memory_pools,
+                        u32 memory_pool_count);
+
+    /**
+     * Update effects.
+     *
+     * @param effect_context    - Effect context to update.
+     * @param renderer_active   - Whether the AudioRenderer is active.
+     * @param memory_pools      - Memory pools to use for these voices.
+     * @param memory_pool_count - Number of memory pools.
+     * @return Result code.
+     */
+    Result UpdateEffects(EffectContext& effect_context, bool renderer_active,
+                         std::span<MemoryPoolInfo> memory_pools, u32 memory_pool_count);
+
+    /**
+     * Update mixes.
+     *
+     * @param mix_context       - Mix context to update.
+     * @param mix_buffer_count  - Number of mix buffers.
+     * @param effect_context    - Effect context to update effort order.
+     * @param splitter_context  - Splitter context for the mixes.
+     * @return Result code.
+     */
+    Result UpdateMixes(MixContext& mix_context, u32 mix_buffer_count, EffectContext& effect_context,
+                       SplitterContext& splitter_context);
+
+    /**
+     * Update sinks.
+     *
+     * @param sink_context      - Sink context to update.
+     * @param memory_pools      - Memory pools to use for these voices.
+     * @param memory_pool_count - Number of memory pools.
+     * @return Result code.
+     */
+    Result UpdateSinks(SinkContext& sink_context, std::span<MemoryPoolInfo> memory_pools,
+                       u32 memory_pool_count);
+
+    /**
+     * Update memory pools.
+     *
+     * @param memory_pools      - Memory pools to use for these voices.
+     * @param memory_pool_count - Number of memory pools.
+     * @return Result code.
+     */
+    Result UpdateMemoryPools(std::span<MemoryPoolInfo> memory_pools, u32 memory_pool_count);
+
+    /**
+     * Update the performance buffer.
+     *
+     * @param output              - Output buffer for performance metrics.
+     * @param output_size         - Output buffer size.
+     * @param performance_manager - Performance manager..
+     * @return Result code.
+     */
+    Result UpdatePerformanceBuffer(std::span<u8> output, u64 output_size,
+                                   PerformanceManager* performance_manager);
+
+    /**
+     * Update behaviour.
+     *
+     * @param behaviour - Behaviour to update.
+     * @return Result code.
+     */
+    Result UpdateBehaviorInfo(BehaviorInfo& behaviour);
+
+    /**
+     * Update errors.
+     *
+     * @param behaviour - Behaviour to update.
+     * @return Result code.
+     */
+    Result UpdateErrorInfo(BehaviorInfo& behaviour);
+
+    /**
+     * Update splitter.
+     *
+     * @param splitter_context - Splitter context to update.
+     * @return Result code.
+     */
+    Result UpdateSplitterInfo(SplitterContext& splitter_context);
+
+    /**
+     * Update renderer info.
+     *
+     * @param elapsed_frames - Number of elapsed frames.
+     * @return Result code.
+     */
+    Result UpdateRendererInfo(u64 elapsed_frames);
+
+    /**
+     * Check that the input.output sizes match their expected values.
+     *
+     * @return Result code.
+     */
+    Result CheckConsumedSize();
+
+private:
+    /**
+     * Update effects version 1.
+     *
+     * @param effect_context    - Effect context to update.
+     * @param renderer_active   - Is the AudioRenderer active?
+     * @param memory_pools      - Memory pools to use for these voices.
+     * @param memory_pool_count - Number of memory pools.
+     * @return Result code.
+     */
+    Result UpdateEffectsVersion1(EffectContext& effect_context, bool renderer_active,
+                                 std::span<MemoryPoolInfo> memory_pools, u32 memory_pool_count);
+
+    /**
+     * Update effects version 2.
+     *
+     * @param effect_context    - Effect context to update.
+     * @param renderer_active   - Is the AudioRenderer active?
+     * @param memory_pools      - Memory pools to use for these voices.
+     * @param memory_pool_count - Number of memory pools.
+     * @return Result code.
+     */
+    Result UpdateEffectsVersion2(EffectContext& effect_context, bool renderer_active,
+                                 std::span<MemoryPoolInfo> memory_pools, u32 memory_pool_count);
+
+    /// Input buffer
+    u8 const* input;
+    /// Input buffer start
+    std::span<const u8> input_origin;
+    /// Output buffer start
+    u8* output;
+    /// Output buffer start
+    std::span<u8> output_origin;
+    /// Input header
+    const UpdateDataHeader* in_header;
+    /// Output header
+    UpdateDataHeader* out_header;
+    /// Expected input size, see CheckConsumedSize
+    u64 expected_input_size;
+    /// Expected output size, see CheckConsumedSize
+    u64 expected_output_size;
+    /// Unused
+    u32 process_handle;
+    /// Behaviour
+    BehaviorInfo& behaviour;
+};
+
+} // namespace AudioCore::AudioRenderer

src/audio_core/renderer/command/command_buffer.cpp

@@ -0,0 +1,714 @@
+// SPDX-FileCopyrightText: Copyright 2022 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include "audio_core/renderer/behavior/behavior_info.h"
+#include "audio_core/renderer/command/command_buffer.h"
+#include "audio_core/renderer/command/command_list_header.h"
+#include "audio_core/renderer/command/command_processing_time_estimator.h"
+#include "audio_core/renderer/effect/biquad_filter.h"
+#include "audio_core/renderer/effect/delay.h"
+#include "audio_core/renderer/effect/reverb.h"
+#include "audio_core/renderer/memory/memory_pool_info.h"
+#include "audio_core/renderer/mix/mix_info.h"
+#include "audio_core/renderer/sink/circular_buffer_sink_info.h"
+#include "audio_core/renderer/sink/device_sink_info.h"
+#include "audio_core/renderer/sink/sink_info_base.h"
+#include "audio_core/renderer/voice/voice_info.h"
+#include "audio_core/renderer/voice/voice_state.h"
+
+namespace AudioCore::AudioRenderer {
+
+template <typename T, CommandId Id>
+T& CommandBuffer::GenerateStart(const s32 node_id) {
+    if (size + sizeof(T) >= command_list.size_bytes()) {
+        LOG_ERROR(
+            Service_Audio,
+            "Attempting to write commands beyond the end of allocated command buffer memory!");
+        UNREACHABLE();
+    }
+
+    auto& cmd{*std::construct_at<T>(reinterpret_cast<T*>(&command_list[size]))};
+
+    cmd.magic = CommandMagic;
+    cmd.enabled = true;
+    cmd.type = Id;
+    cmd.size = sizeof(T);
+    cmd.node_id = node_id;
+
+    return cmd;
+}
+
+template <typename T>
+void CommandBuffer::GenerateEnd(T& cmd) {
+    cmd.estimated_process_time = time_estimator->Estimate(cmd);
+    estimated_process_time += cmd.estimated_process_time;
+    size += sizeof(T);
+    count++;
+}
+
+void CommandBuffer::GeneratePcmInt16Version1Command(const s32 node_id,
+                                                    const MemoryPoolInfo& memory_pool_,
+                                                    VoiceInfo& voice_info,
+                                                    const VoiceState& voice_state,
+                                                    const s16 buffer_count, const s8 channel) {
+    auto& cmd{
+        GenerateStart<PcmInt16DataSourceVersion1Command, CommandId::DataSourcePcmInt16Version1>(
+            node_id)};
+
+    cmd.src_quality = voice_info.src_quality;
+    cmd.output_index = buffer_count + channel;
+    cmd.flags = voice_info.flags & 3;
+    cmd.sample_rate = voice_info.sample_rate;
+    cmd.pitch = voice_info.pitch;
+    cmd.channel_index = channel;
+    cmd.channel_count = voice_info.channel_count;
+
+    for (u32 i = 0; i < MaxWaveBuffers; i++) {
+        voice_info.wavebuffers[i].Copy(cmd.wave_buffers[i]);
+    }
+
+    cmd.voice_state = memory_pool_.Translate(CpuAddr(&voice_state), sizeof(VoiceState));
+
+    GenerateEnd<PcmInt16DataSourceVersion1Command>(cmd);
+}
+
+void CommandBuffer::GeneratePcmInt16Version2Command(const s32 node_id, VoiceInfo& voice_info,
+                                                    const VoiceState& voice_state,
+                                                    const s16 buffer_count, const s8 channel) {
+    auto& cmd{
+        GenerateStart<PcmInt16DataSourceVersion2Command, CommandId::DataSourcePcmInt16Version2>(
+            node_id)};
+
+    cmd.src_quality = voice_info.src_quality;
+    cmd.output_index = buffer_count + channel;
+    cmd.flags = voice_info.flags & 3;
+    cmd.sample_rate = voice_info.sample_rate;
+    cmd.pitch = voice_info.pitch;
+    cmd.channel_index = channel;
+    cmd.channel_count = voice_info.channel_count;
+
+    for (u32 i = 0; i < MaxWaveBuffers; i++) {
+        voice_info.wavebuffers[i].Copy(cmd.wave_buffers[i]);
+    }
+
+    cmd.voice_state = memory_pool->Translate(CpuAddr(&voice_state), sizeof(VoiceState));
+
+    GenerateEnd<PcmInt16DataSourceVersion2Command>(cmd);
+}
+
+void CommandBuffer::GeneratePcmFloatVersion1Command(const s32 node_id,
+                                                    const MemoryPoolInfo& memory_pool_,
+                                                    VoiceInfo& voice_info,
+                                                    const VoiceState& voice_state,
+                                                    const s16 buffer_count, const s8 channel) {
+    auto& cmd{
+        GenerateStart<PcmFloatDataSourceVersion1Command, CommandId::DataSourcePcmFloatVersion1>(
+            node_id)};
+
+    cmd.src_quality = voice_info.src_quality;
+    cmd.output_index = buffer_count + channel;
+    cmd.flags = voice_info.flags & 3;
+    cmd.sample_rate = voice_info.sample_rate;
+    cmd.pitch = voice_info.pitch;
+    cmd.channel_index = channel;
+    cmd.channel_count = voice_info.channel_count;
+
+    for (u32 i = 0; i < MaxWaveBuffers; i++) {
+        voice_info.wavebuffers[i].Copy(cmd.wave_buffers[i]);
+    }
+
+    cmd.voice_state = memory_pool_.Translate(CpuAddr(&voice_state), sizeof(VoiceState));
+
+    GenerateEnd<PcmFloatDataSourceVersion1Command>(cmd);
+}
+
+void CommandBuffer::GeneratePcmFloatVersion2Command(const s32 node_id, VoiceInfo& voice_info,
+                                                    const VoiceState& voice_state,
+                                                    const s16 buffer_count, const s8 channel) {
+    auto& cmd{
+        GenerateStart<PcmFloatDataSourceVersion2Command, CommandId::DataSourcePcmFloatVersion2>(
+            node_id)};
+
+    cmd.src_quality = voice_info.src_quality;
+    cmd.output_index = buffer_count + channel;
+    cmd.flags = voice_info.flags & 3;
+    cmd.sample_rate = voice_info.sample_rate;
+    cmd.pitch = voice_info.pitch;
+    cmd.channel_index = channel;
+    cmd.channel_count = voice_info.channel_count;
+
+    for (u32 i = 0; i < MaxWaveBuffers; i++) {
+        voice_info.wavebuffers[i].Copy(cmd.wave_buffers[i]);
+    }
+
+    cmd.voice_state = memory_pool->Translate(CpuAddr(&voice_state), sizeof(VoiceState));
+
+    GenerateEnd<PcmFloatDataSourceVersion2Command>(cmd);
+}
+
+void CommandBuffer::GenerateAdpcmVersion1Command(const s32 node_id,
+                                                 const MemoryPoolInfo& memory_pool_,
+                                                 VoiceInfo& voice_info,
+                                                 const VoiceState& voice_state,
+                                                 const s16 buffer_count, const s8 channel) {
+    auto& cmd{
+        GenerateStart<AdpcmDataSourceVersion1Command, CommandId::DataSourceAdpcmVersion1>(node_id)};
+
+    cmd.src_quality = voice_info.src_quality;
+    cmd.output_index = buffer_count + channel;
+    cmd.flags = voice_info.flags & 3;
+    cmd.sample_rate = voice_info.sample_rate;
+    cmd.pitch = voice_info.pitch;
+
+    for (u32 i = 0; i < MaxWaveBuffers; i++) {
+        voice_info.wavebuffers[i].Copy(cmd.wave_buffers[i]);
+    }
+
+    cmd.voice_state = memory_pool_.Translate(CpuAddr(&voice_state), sizeof(VoiceState));
+    cmd.data_address = voice_info.data_address.GetReference(true);
+    cmd.data_size = voice_info.data_address.GetSize();
+
+    GenerateEnd<AdpcmDataSourceVersion1Command>(cmd);
+}
+
+void CommandBuffer::GenerateAdpcmVersion2Command(const s32 node_id, VoiceInfo& voice_info,
+                                                 const VoiceState& voice_state,
+                                                 const s16 buffer_count, const s8 channel) {
+    auto& cmd{
+        GenerateStart<AdpcmDataSourceVersion2Command, CommandId::DataSourceAdpcmVersion2>(node_id)};
+
+    cmd.src_quality = voice_info.src_quality;
+    cmd.output_index = buffer_count + channel;
+    cmd.flags = voice_info.flags & 3;
+    cmd.sample_rate = voice_info.sample_rate;
+    cmd.pitch = voice_info.pitch;
+    cmd.channel_index = channel;
+    cmd.channel_count = voice_info.channel_count;
+
+    for (u32 i = 0; i < MaxWaveBuffers; i++) {
+        voice_info.wavebuffers[i].Copy(cmd.wave_buffers[i]);
+    }
+
+    cmd.voice_state = memory_pool->Translate(CpuAddr(&voice_state), sizeof(VoiceState));
+    cmd.data_address = voice_info.data_address.GetReference(true);
+    cmd.data_size = voice_info.data_address.GetSize();
+
+    GenerateEnd<AdpcmDataSourceVersion2Command>(cmd);
+}
+
+void CommandBuffer::GenerateVolumeCommand(const s32 node_id, const s16 buffer_offset,
+                                          const s16 input_index, const f32 volume,
+                                          const u8 precision) {
+    auto& cmd{GenerateStart<VolumeCommand, CommandId::Volume>(node_id)};
+
+    cmd.precision = precision;
+    cmd.input_index = buffer_offset + input_index;
+    cmd.output_index = buffer_offset + input_index;
+    cmd.volume = volume;
+
+    GenerateEnd<VolumeCommand>(cmd);
+}
+
+void CommandBuffer::GenerateVolumeRampCommand(const s32 node_id, VoiceInfo& voice_info,
+                                              const s16 buffer_count, const u8 precision) {
+    auto& cmd{GenerateStart<VolumeRampCommand, CommandId::VolumeRamp>(node_id)};
+
+    cmd.input_index = buffer_count;
+    cmd.output_index = buffer_count;
+    cmd.prev_volume = voice_info.prev_volume;
+    cmd.volume = voice_info.volume;
+    cmd.precision = precision;
+
+    GenerateEnd<VolumeRampCommand>(cmd);
+}
+
+void CommandBuffer::GenerateBiquadFilterCommand(const s32 node_id, VoiceInfo& voice_info,
+                                                const VoiceState& voice_state,
+                                                const s16 buffer_count, const s8 channel,
+                                                const u32 biquad_index,
+                                                const bool use_float_processing) {
+    auto& cmd{GenerateStart<BiquadFilterCommand, CommandId::BiquadFilter>(node_id)};
+
+    cmd.input = buffer_count + channel;
+    cmd.output = buffer_count + channel;
+
+    cmd.biquad = voice_info.biquads[biquad_index];
+
+    cmd.state = memory_pool->Translate(CpuAddr(voice_state.biquad_states[biquad_index].data()),
+                                       MaxBiquadFilters * sizeof(VoiceState::BiquadFilterState));
+
+    cmd.needs_init = !voice_info.biquad_initialized[biquad_index];
+    cmd.use_float_processing = use_float_processing;
+
+    GenerateEnd<BiquadFilterCommand>(cmd);
+}
+
+void CommandBuffer::GenerateBiquadFilterCommand(const s32 node_id, EffectInfoBase& effect_info,
+                                                const s16 buffer_offset, const s8 channel,
+                                                const bool needs_init,
+                                                const bool use_float_processing) {
+    auto& cmd{GenerateStart<BiquadFilterCommand, CommandId::BiquadFilter>(node_id)};
+
+    const auto& parameter{
+        *reinterpret_cast<BiquadFilterInfo::ParameterVersion1*>(effect_info.GetParameter())};
+    const auto state{
+        reinterpret_cast<VoiceState::BiquadFilterState*>(effect_info.GetStateBuffer())};
+
+    cmd.input = buffer_offset + parameter.inputs[channel];
+    cmd.output = buffer_offset + parameter.outputs[channel];
+
+    cmd.biquad.b = parameter.b;
+    cmd.biquad.a = parameter.a;
+
+    cmd.state = memory_pool->Translate(CpuAddr(state),
+                                       MaxBiquadFilters * sizeof(VoiceState::BiquadFilterState));
+
+    cmd.needs_init = needs_init;
+    cmd.use_float_processing = use_float_processing;
+
+    GenerateEnd<BiquadFilterCommand>(cmd);
+}
+
+void CommandBuffer::GenerateMixCommand(const s32 node_id, const s16 input_index,
+                                       const s16 output_index, const s16 buffer_offset,
+                                       const f32 volume, const u8 precision) {
+    auto& cmd{GenerateStart<MixCommand, CommandId::Mix>(node_id)};
+
+    cmd.input_index = input_index;
+    cmd.output_index = output_index;
+    cmd.volume = volume;
+    cmd.precision = precision;
+
+    GenerateEnd<MixCommand>(cmd);
+}
+
+void CommandBuffer::GenerateMixRampCommand(const s32 node_id,
+                                           [[maybe_unused]] const s16 buffer_count,
+                                           const s16 input_index, const s16 output_index,
+                                           const f32 volume, const f32 prev_volume,
+                                           const CpuAddr prev_samples, const u8 precision) {
+    if (volume == 0.0f && prev_volume == 0.0f) {
+        return;
+    }
+
+    auto& cmd{GenerateStart<MixRampCommand, CommandId::MixRamp>(node_id)};
+
+    cmd.input_index = input_index;
+    cmd.output_index = output_index;
+    cmd.prev_volume = prev_volume;
+    cmd.volume = volume;
+    cmd.previous_sample = prev_samples;
+    cmd.precision = precision;
+
+    GenerateEnd<MixRampCommand>(cmd);
+}
+
+void CommandBuffer::GenerateMixRampGroupedCommand(const s32 node_id, const s16 buffer_count,
+                                                  const s16 input_index, s16 output_index,
+                                                  std::span<const f32> volumes,
+                                                  std::span<const f32> prev_volumes,
+                                                  const CpuAddr prev_samples, const u8 precision) {
+    auto& cmd{GenerateStart<MixRampGroupedCommand, CommandId::MixRampGrouped>(node_id)};
+
+    cmd.buffer_count = buffer_count;
+
+    for (s32 i = 0; i < buffer_count; i++) {
+        cmd.inputs[i] = input_index;
+        cmd.outputs[i] = output_index++;
+        cmd.prev_volumes[i] = prev_volumes[i];
+        cmd.volumes[i] = volumes[i];
+    }
+
+    cmd.previous_samples = prev_samples;
+    cmd.precision = precision;
+
+    GenerateEnd<MixRampGroupedCommand>(cmd);
+}
+
+void CommandBuffer::GenerateDepopPrepareCommand(const s32 node_id, const VoiceState& voice_state,
+                                                std::span<const s32> buffer, const s16 buffer_count,
+                                                s16 buffer_offset, const bool was_playing) {
+    auto& cmd{GenerateStart<DepopPrepareCommand, CommandId::DepopPrepare>(node_id)};
+
+    cmd.enabled = was_playing;
+
+    for (u32 i = 0; i < MaxMixBuffers; i++) {
+        cmd.inputs[i] = buffer_offset++;
+    }
+
+    cmd.previous_samples = memory_pool->Translate(CpuAddr(voice_state.previous_samples.data()),
+                                                  MaxMixBuffers * sizeof(s32));
+    cmd.buffer_count = buffer_count;
+    cmd.depop_buffer = memory_pool->Translate(CpuAddr(buffer.data()), buffer_count * sizeof(s32));
+
+    GenerateEnd<DepopPrepareCommand>(cmd);
+}
+
+void CommandBuffer::GenerateDepopForMixBuffersCommand(const s32 node_id, const MixInfo& mix_info,
+                                                      std::span<const s32> depop_buffer) {
+    auto& cmd{GenerateStart<DepopForMixBuffersCommand, CommandId::DepopForMixBuffers>(node_id)};
+
+    cmd.input = mix_info.buffer_offset;
+    cmd.count = mix_info.buffer_count;
+    cmd.decay = mix_info.sample_rate == TargetSampleRate ? 0.96218872f : 0.94369507f;
+    cmd.depop_buffer =
+        memory_pool->Translate(CpuAddr(depop_buffer.data()), mix_info.buffer_count * sizeof(s32));
+
+    GenerateEnd<DepopForMixBuffersCommand>(cmd);
+}
+
+void CommandBuffer::GenerateDelayCommand(const s32 node_id, EffectInfoBase& effect_info,
+                                         const s16 buffer_offset) {
+    auto& cmd{GenerateStart<DelayCommand, CommandId::Delay>(node_id)};
+
+    const auto& parameter{
+        *reinterpret_cast<DelayInfo::ParameterVersion1*>(effect_info.GetParameter())};
+    const auto state{effect_info.GetStateBuffer()};
+
+    if (IsChannelCountValid(parameter.channel_count)) {
+        const auto state_buffer{memory_pool->Translate(CpuAddr(state), sizeof(DelayInfo::State))};
+        if (state_buffer) {
+            for (s16 channel = 0; channel < parameter.channel_count; channel++) {
+                cmd.inputs[channel] = buffer_offset + parameter.inputs[channel];
+                cmd.outputs[channel] = buffer_offset + parameter.outputs[channel];
+            }
+
+            if (!behavior->IsDelayChannelMappingChanged() && parameter.channel_count == 6) {
+                UseOldChannelMapping(cmd.inputs, cmd.outputs);
+            }
+
+            cmd.parameter = parameter;
+            cmd.effect_enabled = effect_info.IsEnabled();
+            cmd.state = state_buffer;
+            cmd.workbuffer = effect_info.GetWorkbuffer(-1);
+        }
+    }
+
+    GenerateEnd<DelayCommand>(cmd);
+}
+
+void CommandBuffer::GenerateUpsampleCommand(const s32 node_id, const s16 buffer_offset,
+                                            UpsamplerInfo& upsampler_info, const u32 input_count,
+                                            std::span<const s8> inputs, const s16 buffer_count,
+                                            const u32 sample_count_, const u32 sample_rate_) {
+    auto& cmd{GenerateStart<UpsampleCommand, CommandId::Upsample>(node_id)};
+
+    cmd.samples_buffer = memory_pool->Translate(upsampler_info.samples_pos,
+                                                upsampler_info.sample_count * sizeof(s32));
+    cmd.inputs = memory_pool->Translate(CpuAddr(upsampler_info.inputs.data()), MaxChannels);
+    cmd.buffer_count = buffer_count;
+    cmd.unk_20 = 0;
+    cmd.source_sample_count = sample_count_;
+    cmd.source_sample_rate = sample_rate_;
+
+    upsampler_info.input_count = input_count;
+    for (u32 i = 0; i < input_count; i++) {
+        upsampler_info.inputs[i] = buffer_offset + inputs[i];
+    }
+
+    cmd.upsampler_info = memory_pool->Translate(CpuAddr(&upsampler_info), sizeof(UpsamplerInfo));
+
+    GenerateEnd<UpsampleCommand>(cmd);
+}
+
+void CommandBuffer::GenerateDownMix6chTo2chCommand(const s32 node_id, std::span<const s8> inputs,
+                                                   const s16 buffer_offset,
+                                                   std::span<const f32> downmix_coeff) {
+    auto& cmd{GenerateStart<DownMix6chTo2chCommand, CommandId::DownMix6chTo2ch>(node_id)};
+
+    for (u32 i = 0; i < MaxChannels; i++) {
+        cmd.inputs[i] = buffer_offset + inputs[i];
+        cmd.outputs[i] = buffer_offset + inputs[i];
+    }
+
+    for (u32 i = 0; i < 4; i++) {
+        cmd.down_mix_coeff[i] = downmix_coeff[i];
+    }
+
+    GenerateEnd<DownMix6chTo2chCommand>(cmd);
+}
+
+void CommandBuffer::GenerateAuxCommand(const s32 node_id, EffectInfoBase& effect_info,
+                                       const s16 input_index, const s16 output_index,
+                                       const s16 buffer_offset, const u32 update_count,
+                                       const u32 count_max, const u32 write_offset) {
+    auto& cmd{GenerateStart<AuxCommand, CommandId::Aux>(node_id)};
+
+    if (effect_info.GetSendBuffer() != 0 && effect_info.GetReturnBuffer() != 0) {
+        cmd.input = buffer_offset + input_index;
+        cmd.output = buffer_offset + output_index;
+        cmd.send_buffer_info = effect_info.GetSendBufferInfo();
+        cmd.send_buffer = effect_info.GetSendBuffer();
+        cmd.return_buffer_info = effect_info.GetReturnBufferInfo();
+        cmd.return_buffer = effect_info.GetReturnBuffer();
+        cmd.count_max = count_max;
+        cmd.write_offset = write_offset;
+        cmd.update_count = update_count;
+        cmd.effect_enabled = effect_info.IsEnabled();
+    }
+
+    GenerateEnd<AuxCommand>(cmd);
+}
+
+void CommandBuffer::GenerateDeviceSinkCommand(const s32 node_id, const s16 buffer_offset,
+                                              SinkInfoBase& sink_info, const u32 session_id,
+                                              std::span<s32> samples_buffer) {
+    auto& cmd{GenerateStart<DeviceSinkCommand, CommandId::DeviceSink>(node_id)};
+    const auto& parameter{
+        *reinterpret_cast<DeviceSinkInfo::DeviceInParameter*>(sink_info.GetParameter())};
+    auto state{*reinterpret_cast<DeviceSinkInfo::DeviceState*>(sink_info.GetState())};
+
+    cmd.session_id = session_id;
+
+    if (state.upsampler_info != nullptr) {
+        const auto size_{state.upsampler_info->sample_count * parameter.input_count};
+        const auto size_bytes{size_ * sizeof(s32)};
+        const auto addr{memory_pool->Translate(state.upsampler_info->samples_pos, size_bytes)};
+        cmd.sample_buffer = {reinterpret_cast<s32*>(addr),
+                             parameter.input_count * state.upsampler_info->sample_count};
+    } else {
+        cmd.sample_buffer = samples_buffer;
+    }
+
+    cmd.input_count = parameter.input_count;
+    for (u32 i = 0; i < parameter.input_count; i++) {
+        cmd.inputs[i] = buffer_offset + parameter.inputs[i];
+    }
+
+    GenerateEnd<DeviceSinkCommand>(cmd);
+}
+
+void CommandBuffer::GenerateCircularBufferSinkCommand(const s32 node_id, SinkInfoBase& sink_info,
+                                                      const s16 buffer_offset) {
+    auto& cmd{GenerateStart<CircularBufferSinkCommand, CommandId::CircularBufferSink>(node_id)};
+    const auto& parameter{*reinterpret_cast<CircularBufferSinkInfo::CircularBufferInParameter*>(
+        sink_info.GetParameter())};
+    auto state{
+        *reinterpret_cast<CircularBufferSinkInfo::CircularBufferState*>(sink_info.GetState())};
+
+    cmd.input_count = parameter.input_count;
+    for (u32 i = 0; i < parameter.input_count; i++) {
+        cmd.inputs[i] = buffer_offset + parameter.inputs[i];
+    }
+
+    cmd.address = state.address_info.GetReference(true);
+    cmd.size = parameter.size;
+    cmd.pos = state.current_pos;
+
+    GenerateEnd<CircularBufferSinkCommand>(cmd);
+}
+
+void CommandBuffer::GenerateReverbCommand(const s32 node_id, EffectInfoBase& effect_info,
+                                          const s16 buffer_offset,
+                                          const bool long_size_pre_delay_supported) {
+    auto& cmd{GenerateStart<ReverbCommand, CommandId::Reverb>(node_id)};
+
+    const auto& parameter{
+        *reinterpret_cast<ReverbInfo::ParameterVersion2*>(effect_info.GetParameter())};
+    const auto state{effect_info.GetStateBuffer()};
+
+    if (IsChannelCountValid(parameter.channel_count)) {
+        const auto state_buffer{memory_pool->Translate(CpuAddr(state), sizeof(ReverbInfo::State))};
+        if (state_buffer) {
+            for (s16 channel = 0; channel < parameter.channel_count; channel++) {
+                cmd.inputs[channel] = buffer_offset + parameter.inputs[channel];
+                cmd.outputs[channel] = buffer_offset + parameter.outputs[channel];
+            }
+
+            if (!behavior->IsReverbChannelMappingChanged() && parameter.channel_count == 6) {
+                UseOldChannelMapping(cmd.inputs, cmd.outputs);
+            }
+
+            cmd.parameter = parameter;
+            cmd.effect_enabled = effect_info.IsEnabled();
+            cmd.state = state_buffer;
+            cmd.workbuffer = effect_info.GetWorkbuffer(-1);
+            cmd.long_size_pre_delay_supported = long_size_pre_delay_supported;
+        }
+    }
+
+    GenerateEnd<ReverbCommand>(cmd);
+}
+
+void CommandBuffer::GenerateI3dl2ReverbCommand(const s32 node_id, EffectInfoBase& effect_info,
+                                               const s16 buffer_offset) {
+    auto& cmd{GenerateStart<I3dl2ReverbCommand, CommandId::I3dl2Reverb>(node_id)};
+
+    const auto& parameter{
+        *reinterpret_cast<I3dl2ReverbInfo::ParameterVersion1*>(effect_info.GetParameter())};
+    const auto state{effect_info.GetStateBuffer()};
+
+    if (IsChannelCountValid(parameter.channel_count)) {
+        const auto state_buffer{
+            memory_pool->Translate(CpuAddr(state), sizeof(I3dl2ReverbInfo::State))};
+        if (state_buffer) {
+            for (s16 channel = 0; channel < parameter.channel_count; channel++) {
+                cmd.inputs[channel] = buffer_offset + parameter.inputs[channel];
+                cmd.outputs[channel] = buffer_offset + parameter.outputs[channel];
+            }
+
+            if (!behavior->IsI3dl2ReverbChannelMappingChanged() && parameter.channel_count == 6) {
+                UseOldChannelMapping(cmd.inputs, cmd.outputs);
+            }
+
+            cmd.parameter = parameter;
+            cmd.effect_enabled = effect_info.IsEnabled();
+            cmd.state = state_buffer;
+            cmd.workbuffer = effect_info.GetWorkbuffer(-1);
+        }
+    }
+
+    GenerateEnd<I3dl2ReverbCommand>(cmd);
+}
+
+void CommandBuffer::GeneratePerformanceCommand(const s32 node_id, const PerformanceState state,
+                                               const PerformanceEntryAddresses& entry_addresses) {
+    auto& cmd{GenerateStart<PerformanceCommand, CommandId::Performance>(node_id)};
+
+    cmd.state = state;
+    cmd.entry_address = entry_addresses;
+
+    GenerateEnd<PerformanceCommand>(cmd);
+}
+
+void CommandBuffer::GenerateClearMixCommand(const s32 node_id) {
+    auto& cmd{GenerateStart<ClearMixBufferCommand, CommandId::ClearMixBuffer>(node_id)};
+    GenerateEnd<ClearMixBufferCommand>(cmd);
+}
+
+void CommandBuffer::GenerateCopyMixBufferCommand(const s32 node_id, EffectInfoBase& effect_info,
+                                                 const s16 buffer_offset, const s8 channel) {
+    auto& cmd{GenerateStart<CopyMixBufferCommand, CommandId::CopyMixBuffer>(node_id)};
+
+    const auto& parameter{
+        *reinterpret_cast<BiquadFilterInfo::ParameterVersion1*>(effect_info.GetParameter())};
+    cmd.input_index = buffer_offset + parameter.inputs[channel];
+    cmd.output_index = buffer_offset + parameter.outputs[channel];
+
+    GenerateEnd<CopyMixBufferCommand>(cmd);
+}
+
+void CommandBuffer::GenerateLightLimiterCommand(
+    const s32 node_id, const s16 buffer_offset,
+    const LightLimiterInfo::ParameterVersion1& parameter, const LightLimiterInfo::State& state,
+    const bool enabled, const CpuAddr workbuffer) {
+    auto& cmd{GenerateStart<LightLimiterVersion1Command, CommandId::LightLimiterVersion1>(node_id)};
+
+    if (IsChannelCountValid(parameter.channel_count)) {
+        const auto state_buffer{
+            memory_pool->Translate(CpuAddr(&state), sizeof(LightLimiterInfo::State))};
+        if (state_buffer) {
+            for (s8 channel = 0; channel < parameter.channel_count; channel++) {
+                cmd.inputs[channel] = buffer_offset + parameter.inputs[channel];
+                cmd.outputs[channel] = buffer_offset + parameter.outputs[channel];
+            }
+
+            std::memcpy(&cmd.parameter, &parameter, sizeof(LightLimiterInfo::ParameterVersion1));
+            cmd.effect_enabled = enabled;
+            cmd.state = state_buffer;
+            cmd.workbuffer = workbuffer;
+        }
+    }
+
+    GenerateEnd<LightLimiterVersion1Command>(cmd);
+}
+
+void CommandBuffer::GenerateLightLimiterCommand(
+    const s32 node_id, const s16 buffer_offset,
+    const LightLimiterInfo::ParameterVersion2& parameter,
+    const LightLimiterInfo::StatisticsInternal& statistics, const LightLimiterInfo::State& state,
+    const bool enabled, const CpuAddr workbuffer) {
+    auto& cmd{GenerateStart<LightLimiterVersion2Command, CommandId::LightLimiterVersion2>(node_id)};
+    if (IsChannelCountValid(parameter.channel_count)) {
+        const auto state_buffer{
+            memory_pool->Translate(CpuAddr(&state), sizeof(LightLimiterInfo::State))};
+        if (state_buffer) {
+            for (s8 channel = 0; channel < parameter.channel_count; channel++) {
+                cmd.inputs[channel] = buffer_offset + parameter.inputs[channel];
+                cmd.outputs[channel] = buffer_offset + parameter.outputs[channel];
+            }
+
+            cmd.parameter = parameter;
+            cmd.effect_enabled = enabled;
+            cmd.state = state_buffer;
+            if (cmd.parameter.statistics_enabled) {
+                cmd.result_state = memory_pool->Translate(
+                    CpuAddr(&statistics), sizeof(LightLimiterInfo::StatisticsInternal));
+            } else {
+                cmd.result_state = 0;
+            }
+            cmd.workbuffer = workbuffer;
+        }
+    }
+
+    GenerateEnd<LightLimiterVersion2Command>(cmd);
+}
+
+void CommandBuffer::GenerateMultitapBiquadFilterCommand(const s32 node_id, VoiceInfo& voice_info,
+                                                        const VoiceState& voice_state,
+                                                        const s16 buffer_count, const s8 channel) {
+    auto& cmd{GenerateStart<MultiTapBiquadFilterCommand, CommandId::MultiTapBiquadFilter>(node_id)};
+
+    cmd.input = buffer_count + channel;
+    cmd.output = buffer_count + channel;
+    cmd.biquads = voice_info.biquads;
+
+    cmd.states[0] =
+        memory_pool->Translate(CpuAddr(voice_state.biquad_states[0].data()),
+                               MaxBiquadFilters * sizeof(VoiceState::BiquadFilterState));
+    cmd.states[1] =
+        memory_pool->Translate(CpuAddr(voice_state.biquad_states[1].data()),
+                               MaxBiquadFilters * sizeof(VoiceState::BiquadFilterState));
+
+    cmd.needs_init[0] = !voice_info.biquad_initialized[0];
+    cmd.needs_init[1] = !voice_info.biquad_initialized[1];
+    cmd.filter_tap_count = MaxBiquadFilters;
+
+    GenerateEnd<MultiTapBiquadFilterCommand>(cmd);
+}
+
+void CommandBuffer::GenerateCaptureCommand(const s32 node_id, EffectInfoBase& effect_info,
+                                           const s16 input_index, const s16 output_index,
+                                           const s16 buffer_offset, const u32 update_count,
+                                           const u32 count_max, const u32 write_offset) {
+    auto& cmd{GenerateStart<CaptureCommand, CommandId::Capture>(node_id)};
+
+    if (effect_info.GetSendBuffer()) {
+        cmd.input = buffer_offset + input_index;
+        cmd.output = buffer_offset + output_index;
+        cmd.send_buffer_info = effect_info.GetSendBufferInfo();
+        cmd.send_buffer = effect_info.GetSendBuffer();
+        cmd.count_max = count_max;
+        cmd.write_offset = write_offset;
+        cmd.update_count = update_count;
+        cmd.effect_enabled = effect_info.IsEnabled();
+    }
+
+    GenerateEnd<CaptureCommand>(cmd);
+}
+
+void CommandBuffer::GenerateCompressorCommand(s16 buffer_offset, EffectInfoBase& effect_info,
+                                              s32 node_id) {
+    auto& cmd{GenerateStart<CompressorCommand, CommandId::Compressor>(node_id)};
+
+    auto& parameter{
+        *reinterpret_cast<CompressorInfo::ParameterVersion2*>(effect_info.GetParameter())};
+    auto state{reinterpret_cast<CompressorInfo::State*>(effect_info.GetStateBuffer())};
+
+    if (IsChannelCountValid(parameter.channel_count)) {
+        auto state_buffer{memory_pool->Translate(CpuAddr(state), sizeof(CompressorInfo::State))};
+        if (state_buffer) {
+            for (u16 channel = 0; channel < parameter.channel_count; channel++) {
+                cmd.inputs[channel] = buffer_offset + parameter.inputs[channel];
+                cmd.outputs[channel] = buffer_offset + parameter.outputs[channel];
+            }
+            cmd.parameter = parameter;
+            cmd.workbuffer = state_buffer;
+            cmd.enabled = effect_info.IsEnabled();
+        }
+    }
+
+    GenerateEnd<CompressorCommand>(cmd);
+}
+
+} // namespace AudioCore::AudioRenderer

src/audio_core/renderer/command/command_buffer.h

@@ -0,0 +1,466 @@
+// SPDX-FileCopyrightText: Copyright 2022 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#include <span>
+
+#include "audio_core/renderer/command/commands.h"
+#include "audio_core/renderer/effect/light_limiter.h"
+#include "audio_core/renderer/performance/performance_manager.h"
+#include "common/common_types.h"
+
+namespace AudioCore::AudioRenderer {
+struct UpsamplerInfo;
+struct VoiceState;
+class EffectInfoBase;
+class ICommandProcessingTimeEstimator;
+class MixInfo;
+class MemoryPoolInfo;
+class SinkInfoBase;
+class VoiceInfo;
+
+/**
+ * Utility functions to generate and add commands into the current command list.
+ */
+class CommandBuffer {
+public:
+    /**
+     * Generate a PCM s16 version 1 command, adding it to the command list.
+     *
+     * @param node_id      - Node id of the voice this command is generated for.
+     * @param memory_pool  - Memory pool for translating buffer addresses to the DSP.
+     * @param voice_info   - The voice info this command is generated from.
+     * @param voice_state  - The voice state the DSP will use for this command.
+     * @param buffer_count - Number of mix buffers in use,
+     *                       data will be read into this index + channel.
+     * @param channel      - Channel index for this command.
+     */
+    void GeneratePcmInt16Version1Command(s32 node_id, const MemoryPoolInfo& memory_pool,
+                                         VoiceInfo& voice_info, const VoiceState& voice_state,
+                                         s16 buffer_count, s8 channel);
+
+    /**
+     * Generate a PCM s16 version 2 command, adding it to the command list.
+     *
+     * @param node_id      - Node id of the voice this command is generated for.
+     * @param voice_info   - The voice info this command is generated from.
+     * @param voice_state  - The voice state the DSP will use for this command.
+     * @param buffer_count - Number of mix buffers in use,
+     *                       data will be read into this index + channel.
+     * @param channel      - Channel index for this command.
+     */
+    void GeneratePcmInt16Version2Command(s32 node_id, VoiceInfo& voice_info,
+                                         const VoiceState& voice_state, s16 buffer_count,
+                                         s8 channel);
+
+    /**
+     * Generate a PCM f32 version 1 command, adding it to the command list.
+     *
+     * @param node_id      - Node id of the voice this command is generated for.
+     * @param memory_pool  - Memory pool for translating buffer addresses to the DSP.
+     * @param voice_info   - The voice info this command is generated from.
+     * @param voice_state  - The voice state the DSP will use for this command.
+     * @param buffer_count - Number of mix buffers in use,
+     *                       data will be read into this index + channel.
+     * @param channel      - Channel index for this command.
+     */
+    void GeneratePcmFloatVersion1Command(s32 node_id, const MemoryPoolInfo& memory_pool,
+                                         VoiceInfo& voice_info, const VoiceState& voice_state,
+                                         s16 buffer_count, s8 channel);
+
+    /**
+     * Generate a PCM f32 version 2 command, adding it to the command list.
+     *
+     * @param node_id      - Node id of the voice this command is generated for.
+     * @param voice_info   - The voice info this command is generated from.
+     * @param voice_state  - The voice state the DSP will use for this command.
+     * @param buffer_count - Number of mix buffers in use,
+     *                       data will be read into this index + channel.
+     * @param channel      - Channel index for this command.
+     */
+    void GeneratePcmFloatVersion2Command(s32 node_id, VoiceInfo& voice_info,
+                                         const VoiceState& voice_state, s16 buffer_count,
+                                         s8 channel);
+
+    /**
+     * Generate an ADPCM version 1 command, adding it to the command list.
+     *
+     * @param node_id      - Node id of the voice this command is generated for.
+     * @param memory_pool  - Memory pool for translating buffer addresses to the DSP.
+     * @param voice_info   - The voice info this command is generated from.
+     * @param voice_state  - The voice state the DSP will use for this command.
+     * @param buffer_count - Number of mix buffers in use,
+     *                       data will be read into this index + channel.
+     * @param channel      - Channel index for this command.
+     */
+    void GenerateAdpcmVersion1Command(s32 node_id, const MemoryPoolInfo& memory_pool,
+                                      VoiceInfo& voice_info, const VoiceState& voice_state,
+                                      s16 buffer_count, s8 channel);
+
+    /**
+     * Generate an ADPCM version 2 command, adding it to the command list.
+     *
+     * @param node_id      - Node id of the voice this command is generated for.
+     * @param voice_info   - The voice info this command is generated from.
+     * @param voice_state  - The voice state the DSP will use for this command.
+     * @param buffer_count - Number of mix buffers in use,
+     *                       data will be read into this index + channel.
+     * @param channel      - Channel index for this command.
+     */
+    void GenerateAdpcmVersion2Command(s32 node_id, VoiceInfo& voice_info,
+                                      const VoiceState& voice_state, s16 buffer_count, s8 channel);
+
+    /**
+     * Generate a volume command, adding it to the command list.
+     *
+     * @param node_id       - Node id of the voice this command is generated for.
+     * @param buffer_offset - Base mix buffer index to generate this command at.
+     * @param input_index   - Channel index and mix buffer offset for this command.
+     * @param volume        - Mix volume added to the input samples.
+     * @param precision     - Number of decimal bits for fixed point operations.
+     */
+    void GenerateVolumeCommand(s32 node_id, s16 buffer_offset, s16 input_index, f32 volume,
+                               u8 precision);
+
+    /**
+     * Generate a volume ramp command, adding it to the command list.
+     *
+     * @param node_id      - Node id of the voice this command is generated for.
+     * @param voice_info   - The voice info this command takes its volumes from.
+     * @param buffer_count - Number of active mix buffers, command will generate at this index.
+     * @param precision    - Number of decimal bits for fixed point operations.
+     */
+    void GenerateVolumeRampCommand(s32 node_id, VoiceInfo& voice_info, s16 buffer_count,
+                                   u8 precision);
+
+    /**
+     * Generate a biquad filter command from a voice, adding it to the command list.
+     *
+     * @param node_id              - Node id of the voice this command is generated for.
+     * @param voice_info           - The voice info this command takes biquad parameters from.
+     * @param voice_state          - Used by the AudioRenderer to track previous samples.
+     * @param buffer_count         - Number of active mix buffers,
+     *                               command will generate at this index + channel.
+     * @param channel              - Channel index for this filter to work on.
+     * @param biquad_index         - Which biquad filter to use for this command (0-1).
+     * @param use_float_processing - Should int or float processing be used?
+     */
+    void GenerateBiquadFilterCommand(s32 node_id, VoiceInfo& voice_info,
+                                     const VoiceState& voice_state, s16 buffer_count, s8 channel,
+                                     u32 biquad_index, bool use_float_processing);
+
+    /**
+     * Generate a biquad filter effect command, adding it to the command list.
+     *
+     * @param node_id              - Node id of the voice this command is generated for.
+     * @param effect_info          - The effect info this command takes biquad parameters from.
+     * @param buffer_offset        - Mix buffer offset this command will use,
+     *                               command will generate at this index + channel.
+     * @param channel              - Channel index for this filter to work on.
+     * @param needs_init           - True if the biquad state needs initialisation.
+     * @param use_float_processing - Should int or float processing be used?
+     */
+    void GenerateBiquadFilterCommand(s32 node_id, EffectInfoBase& effect_info, s16 buffer_offset,
+                                     s8 channel, bool needs_init, bool use_float_processing);
+
+    /**
+     * Generate a mix command, adding it to the command list.
+     *
+     * @param node_id       - Node id of the voice this command is generated for.
+     * @param input_index   - Input mix buffer index for this command.
+     *                        Added to the buffer offset.
+     * @param output_index  - Output mix buffer index for this command.
+     *                        Added to the buffer offset.
+     * @param buffer_offset - Mix buffer offset this command will use.
+     * @param volume        - Volume to be applied to the input.
+     * @param precision     - Number of decimal bits for fixed point operations.
+     */
+    void GenerateMixCommand(s32 node_id, s16 input_index, s16 output_index, s16 buffer_offset,
+                            f32 volume, u8 precision);
+
+    /**
+     * Generate a mix ramp command, adding it to the command list.
+     *
+     * @param node_id      - Node id of the voice this command is generated for.
+     * @param buffer_count - Number of active mix buffers.
+     * @param input_index  - Input mix buffer index for this command.
+     *                       Added to buffer_count.
+     * @param output_index - Output mix buffer index for this command.
+     *                       Added to buffer_count.
+     * @param volume       - Current mix volume used for calculating the ramp.
+     * @param prev_volume  - Previous mix volume, used for calculating the ramp,
+     *                       also applied to the input.
+     * @param precision    - Number of decimal bits for fixed point operations.
+     */
+    void GenerateMixRampCommand(s32 node_id, s16 buffer_count, s16 input_index, s16 output_index,
+                                f32 volume, f32 prev_volume, CpuAddr prev_samples, u8 precision);
+
+    /**
+     * Generate a mix ramp grouped command, adding it to the command list.
+     *
+     * @param node_id      - Node id of the voice this command is generated for.
+     * @param buffer_count - Number of active mix buffers.
+     * @param input_index  - Input mix buffer index for this command.
+     *                       Added to buffer_count.
+     * @param output_index - Output mix buffer index for this command.
+     *                       Added to buffer_count.
+     * @param volumes      - Current mix volumes used for calculating the ramp.
+     * @param prev_volumes - Previous mix volumes, used for calculating the ramp,
+     *                       also applied to the input.
+     * @param precision    - Number of decimal bits for fixed point operations.
+     */
+    void GenerateMixRampGroupedCommand(s32 node_id, s16 buffer_count, s16 input_index,
+                                       s16 output_index, std::span<const f32> volumes,
+                                       std::span<const f32> prev_volumes, CpuAddr prev_samples,
+                                       u8 precision);
+
+    /**
+     * Generate a depop prepare command, adding it to the command list.
+     *
+     * @param node_id       - Node id of the voice this command is generated for.
+     * @param voice_state   - State to track the previous depop samples for each mix buffer.
+     * @param buffer        - State to track the current depop samples for each mix buffer.
+     * @param buffer_count  - Number of active mix buffers.
+     * @param buffer_offset - Base mix buffer index to generate the channel depops at.
+     * @param was_playing   - Command only needs to work if the voice was previously playing.
+     */
+    void GenerateDepopPrepareCommand(s32 node_id, const VoiceState& voice_state,
+                                     std::span<const s32> buffer, s16 buffer_count,
+                                     s16 buffer_offset, bool was_playing);
+
+    /**
+     * Generate a depop command, adding it to the command list.
+     *
+     * @param node_id      - Node id of the voice this command is generated for.
+     * @param mix_info     - Mix info to get the buffer count and base offsets from.
+     * @param depop_buffer - Buffer of current depop sample values to be added to the input
+     *                       channels.
+     */
+    void GenerateDepopForMixBuffersCommand(s32 node_id, const MixInfo& mix_info,
+                                           std::span<const s32> depop_buffer);
+
+    /**
+     * Generate a delay command, adding it to the command list.
+     *
+     * @param node_id       - Node id of the voice this command is generated for.
+     * @param effect_info   - Delay effect info to generate this command from.
+     * @param buffer_offset - Base mix buffer offset to apply the apply the delay.
+     */
+    void GenerateDelayCommand(s32 node_id, EffectInfoBase& effect_info, s16 buffer_offset);
+
+    /**
+     * Generate an upsample command, adding it to the command list.
+     *
+     * @param node_id        - Node id of the voice this command is generated for.
+     * @param buffer_offset  - Base mix buffer offset to upsample.
+     * @param upsampler_info - Upsampler info to control the upsampling.
+     * @param input_count    - Number of input channels to upsample.
+     * @param inputs         - Input mix buffer indexes.
+     * @param buffer_count   - Number of active mix buffers.
+     * @param sample_count   - Source sample count of the input.
+     * @param sample_rate    - Source sample rate of the input.
+     */
+    void GenerateUpsampleCommand(s32 node_id, s16 buffer_offset, UpsamplerInfo& upsampler_info,
+                                 u32 input_count, std::span<const s8> inputs, s16 buffer_count,
+                                 u32 sample_count, u32 sample_rate);
+
+    /**
+     * Generate a downmix 6 -> 2 command, adding it to the command list.
+     *
+     * @param node_id       - Node id of the voice this command is generated for.
+     * @param inputs        - Input mix buffer indexes.
+     * @param buffer_offset - Base mix buffer offset of the channels to downmix.
+     * @param downmix_coeff - Downmixing coefficients.
+     */
+    void GenerateDownMix6chTo2chCommand(s32 node_id, std::span<const s8> inputs, s16 buffer_offset,
+                                        std::span<const f32> downmix_coeff);
+
+    /**
+     * Generate an aux buffer command, adding it to the command list.
+     *
+     * @param node_id       - Node id of the voice this command is generated for.
+     * @param effect_info   - Aux effect info to generate this command from.
+     * @param input_index   - Input mix buffer index for this command.
+     *                        Added to buffer_offset.
+     * @param output_index  - Output mix buffer index for this command.
+     *                        Added to buffer_offset.
+     * @param buffer_offset - Base mix buffer offset to use.
+     * @param update_count  - Number of samples to write back to the game as updated, can be 0.
+     * @param count_max     - Maximum number of samples to read or write.
+     * @param write_offset  - Current read or write offset within the buffer.
+     */
+    void GenerateAuxCommand(s32 node_id, EffectInfoBase& effect_info, s16 input_index,
+                            s16 output_index, s16 buffer_offset, u32 update_count, u32 count_max,
+                            u32 write_offset);
+
+    /**
+     * Generate a device sink command, adding it to the command list.
+     *
+     * @param node_id       - Node id of the voice this command is generated for.
+     * @param buffer_offset - Base mix buffer offset to use.
+     * @param sink_info     - The sink_info to generate this command from.
+     * @session_id          - System session id this command is generated from.
+     * @samples_buffer      - The buffer to be sent to the sink if upsampling is not used.
+     */
+    void GenerateDeviceSinkCommand(s32 node_id, s16 buffer_offset, SinkInfoBase& sink_info,
+                                   u32 session_id, std::span<s32> samples_buffer);
+
+    /**
+     * Generate a circular buffer sink command, adding it to the command list.
+     *
+     * @param node_id       - Node id of the voice this command is generated for.
+     * @param sink_info     - The sink_info to generate this command from.
+     * @param buffer_offset - Base mix buffer offset to use.
+     */
+    void GenerateCircularBufferSinkCommand(s32 node_id, SinkInfoBase& sink_info, s16 buffer_offset);
+
+    /**
+     * Generate a reverb command, adding it to the command list.
+     *
+     * @param node_id                       - Node id of the voice this command is generated for.
+     * @param effect_info                   - Reverb effect info to generate this command from.
+     * @param buffer_offset                 - Base mix buffer offset to use.
+     * @param long_size_pre_delay_supported - Should a longer pre-delay time be used before reverb
+     *                                        begins?
+     */
+    void GenerateReverbCommand(s32 node_id, EffectInfoBase& effect_info, s16 buffer_offset,
+                               bool long_size_pre_delay_supported);
+
+    /**
+     * Generate an I3DL2 reverb command, adding it to the command list.
+     *
+     * @param node_id                       - Node id of the voice this command is generated for.
+     * @param effect_info                   - I3DL2Reverb effect info to generate this command from.
+     * @param buffer_offset                 - Base mix buffer offset to use.
+     */
+    void GenerateI3dl2ReverbCommand(s32 node_id, EffectInfoBase& effect_info, s16 buffer_offset);
+
+    /**
+     * Generate a performance command, adding it to the command list.
+     *
+     * @param node_id         - Node id of the voice this command is generated for.
+     * @param state           - State of the performance.
+     * @param entry_addresses - The addresses to be filled in by the AudioRenderer.
+     */
+    void GeneratePerformanceCommand(s32 node_id, PerformanceState state,
+                                    const PerformanceEntryAddresses& entry_addresses);
+
+    /**
+     * Generate a clear mix command, adding it to the command list.
+     *
+     * @param node_id         - Node id of the voice this command is generated for.
+     */
+    void GenerateClearMixCommand(s32 node_id);
+
+    /**
+     * Generate a copy mix command, adding it to the command list.
+     *
+     * @param node_id       - Node id of the voice this command is generated for.
+     * @param effect_info   - BiquadFilter effect info to generate this command from.
+     * @param buffer_offset - Base mix buffer offset to use.
+     * @param channel       - Index to the effect's parameters input indexes for this command.
+     */
+    void GenerateCopyMixBufferCommand(s32 node_id, EffectInfoBase& effect_info, s16 buffer_offset,
+                                      s8 channel);
+
+    /**
+     * Generate a light limiter version 1 command, adding it to the command list.
+     *
+     * @param node_id       - Node id of the voice this command is generated for.
+     * @param buffer_offset - Base mix buffer offset to use.
+     * @param parameter     - Effect parameter to generate from.
+     * @param state         - State used by the AudioRenderer between commands.
+     * @param enabled       - Is this command enabled?
+     * @param workbuffer    - Game-supplied memory for the state.
+     */
+    void GenerateLightLimiterCommand(s32 node_id, s16 buffer_offset,
+                                     const LightLimiterInfo::ParameterVersion1& parameter,
+                                     const LightLimiterInfo::State& state, bool enabled,
+                                     CpuAddr workbuffer);
+
+    /**
+     * Generate a light limiter version 2 command, adding it to the command list.
+     *
+     * @param node_id       - Node id of the voice this command is generated for.
+     * @param buffer_offset - Base mix buffer offset to use.
+     * @param parameter     - Effect parameter to generate from.
+     * @param statistics    - Statistics reported by the AudioRenderer on the limiter's state.
+     * @param state         - State used by the AudioRenderer between commands.
+     * @param enabled       - Is this command enabled?
+     * @param workbuffer    - Game-supplied memory for the state.
+     */
+    void GenerateLightLimiterCommand(s32 node_id, s16 buffer_offset,
+                                     const LightLimiterInfo::ParameterVersion2& parameter,
+                                     const LightLimiterInfo::StatisticsInternal& statistics,
+                                     const LightLimiterInfo::State& state, bool enabled,
+                                     CpuAddr workbuffer);
+
+    /**
+     * Generate a multitap biquad filter command, adding it to the command list.
+     *
+     * @param node_id      - Node id of the voice this command is generated for.
+     * @param voice_info   - The voice info this command takes biquad parameters from.
+     * @param voice_state  - Used by the AudioRenderer to track previous samples.
+     * @param buffer_count - Number of active mix buffers,
+     *                       command will generate at this index + channel.
+     * @param channel      - Channel index for this filter to work on.
+     */
+    void GenerateMultitapBiquadFilterCommand(s32 node_id, VoiceInfo& voice_info,
+                                             const VoiceState& voice_state, s16 buffer_count,
+                                             s8 channel);
+
+    /**
+     * Generate a capture command, adding it to the command list.
+     *
+     * @param node_id       - Node id of the voice this command is generated for.
+     * @param effect_info   - Capture effect info to generate this command from.
+     * @param input_index   - Input mix buffer index for this command.
+     *                        Added to buffer_offset.
+     * @param output_index  - Output mix buffer index for this command (unused).
+     *                        Added to buffer_offset.
+     * @param buffer_offset - Base mix buffer offset to use.
+     * @param update_count  - Number of samples to write back to the game as updated, can be 0.
+     * @param count_max     - Maximum number of samples to read or write.
+     * @param write_offset  - Current read or write offset within the buffer.
+     */
+    void GenerateCaptureCommand(s32 node_id, EffectInfoBase& effect_info, s16 input_index,
+                                s16 output_index, s16 buffer_offset, u32 update_count,
+                                u32 count_max, u32 write_offset);
+
+    /**
+     * Generate a compressor command, adding it to the command list.
+     *
+     * @param buffer_offset - Base mix buffer offset to use.
+     * @param effect_info   - Capture effect info to generate this command from.
+     * @param node_id       - Node id of the voice this command is generated for.
+     */
+    void GenerateCompressorCommand(s16 buffer_offset, EffectInfoBase& effect_info, s32 node_id);
+
+    /// Command list buffer generated commands will be added to
+    std::span<u8> command_list{};
+    /// Input sample count, unused
+    u32 sample_count{};
+    /// Input sample rate, unused
+    u32 sample_rate{};
+    /// Current size of the command buffer
+    u64 size{};
+    /// Current number of commands added
+    u32 count{};
+    /// Current estimated processing time for all commands
+    u32 estimated_process_time{};
+    /// Used for mapping buffers for the AudioRenderer
+    MemoryPoolInfo* memory_pool{};
+    /// Used for estimating command process times
+    ICommandProcessingTimeEstimator* time_estimator{};
+    /// Used to check which rendering features are currently enabled
+    BehaviorInfo* behavior{};
+
+private:
+    template <typename T, CommandId Id>
+    T& GenerateStart(const s32 node_id);
+    template <typename T>
+    void GenerateEnd(T& cmd);
+};
+
+} // namespace AudioCore::AudioRenderer

src/audio_core/renderer/command/command_generator.cpp

@@ -0,0 +1,796 @@
+// SPDX-FileCopyrightText: Copyright 2022 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include "audio_core/common/audio_renderer_parameter.h"
+#include "audio_core/renderer/behavior/behavior_info.h"
+#include "audio_core/renderer/command/command_buffer.h"
+#include "audio_core/renderer/command/command_generator.h"
+#include "audio_core/renderer/command/command_list_header.h"
+#include "audio_core/renderer/effect/aux_.h"
+#include "audio_core/renderer/effect/biquad_filter.h"
+#include "audio_core/renderer/effect/buffer_mixer.h"
+#include "audio_core/renderer/effect/capture.h"
+#include "audio_core/renderer/effect/effect_context.h"
+#include "audio_core/renderer/effect/light_limiter.h"
+#include "audio_core/renderer/mix/mix_context.h"
+#include "audio_core/renderer/performance/detail_aspect.h"
+#include "audio_core/renderer/performance/entry_aspect.h"
+#include "audio_core/renderer/sink/device_sink_info.h"
+#include "audio_core/renderer/sink/sink_context.h"
+#include "audio_core/renderer/splitter/splitter_context.h"
+#include "audio_core/renderer/voice/voice_context.h"
+#include "common/alignment.h"
+
+namespace AudioCore::AudioRenderer {
+
+CommandGenerator::CommandGenerator(CommandBuffer& command_buffer_,
+                                   const CommandListHeader& command_list_header_,
+                                   const AudioRendererSystemContext& render_context_,
+                                   VoiceContext& voice_context_, MixContext& mix_context_,
+                                   EffectContext& effect_context_, SinkContext& sink_context_,
+                                   SplitterContext& splitter_context_,
+                                   PerformanceManager* performance_manager_)
+    : command_buffer{command_buffer_}, command_header{command_list_header_},
+      render_context{render_context_}, voice_context{voice_context_}, mix_context{mix_context_},
+      effect_context{effect_context_}, sink_context{sink_context_},
+      splitter_context{splitter_context_}, performance_manager{performance_manager_} {
+    command_buffer.GenerateClearMixCommand(InvalidNodeId);
+}
+
+void CommandGenerator::GenerateDataSourceCommand(VoiceInfo& voice_info,
+                                                 const VoiceState& voice_state, const s8 channel) {
+    if (voice_info.mix_id == UnusedMixId) {
+        if (voice_info.splitter_id != UnusedSplitterId) {
+            auto destination{splitter_context.GetDesintationData(voice_info.splitter_id, 0)};
+            u32 dest_id{0};
+            while (destination != nullptr) {
+                if (destination->IsConfigured()) {
+                    auto mix_id{destination->GetMixId()};
+                    if (mix_id < mix_context.GetCount()) {
+                        auto mix_info{mix_context.GetInfo(mix_id)};
+                        command_buffer.GenerateDepopPrepareCommand(
+                            voice_info.node_id, voice_state, render_context.depop_buffer,
+                            mix_info->buffer_count, mix_info->buffer_offset,
+                            voice_info.was_playing);
+                    }
+                }
+                dest_id++;
+                destination = splitter_context.GetDesintationData(voice_info.splitter_id, dest_id);
+            }
+        }
+    } else {
+        auto mix_info{mix_context.GetInfo(voice_info.mix_id)};
+        command_buffer.GenerateDepopPrepareCommand(
+            voice_info.node_id, voice_state, render_context.depop_buffer, mix_info->buffer_count,
+            mix_info->buffer_offset, voice_info.was_playing);
+    }
+
+    if (voice_info.was_playing) {
+        return;
+    }
+
+    if (render_context.behavior->IsWaveBufferVer2Supported()) {
+        switch (voice_info.sample_format) {
+        case SampleFormat::PcmInt16:
+            command_buffer.GeneratePcmInt16Version2Command(
+                voice_info.node_id, voice_info, voice_state, render_context.mix_buffer_count,
+                channel);
+            break;
+        case SampleFormat::PcmFloat:
+            command_buffer.GeneratePcmFloatVersion2Command(
+                voice_info.node_id, voice_info, voice_state, render_context.mix_buffer_count,
+                channel);
+            break;
+        case SampleFormat::Adpcm:
+            command_buffer.GenerateAdpcmVersion2Command(voice_info.node_id, voice_info, voice_state,
+                                                        render_context.mix_buffer_count, channel);
+            break;
+        default:
+            LOG_ERROR(Service_Audio, "Invalid SampleFormat {}",
+                      static_cast<u32>(voice_info.sample_format));
+            break;
+        }
+    } else {
+        switch (voice_info.sample_format) {
+        case SampleFormat::PcmInt16:
+            command_buffer.GeneratePcmInt16Version1Command(
+                voice_info.node_id, *command_buffer.memory_pool, voice_info, voice_state,
+                render_context.mix_buffer_count, channel);
+            break;
+        case SampleFormat::PcmFloat:
+            command_buffer.GeneratePcmFloatVersion1Command(
+                voice_info.node_id, *command_buffer.memory_pool, voice_info, voice_state,
+                render_context.mix_buffer_count, channel);
+            break;
+        case SampleFormat::Adpcm:
+            command_buffer.GenerateAdpcmVersion1Command(
+                voice_info.node_id, *command_buffer.memory_pool, voice_info, voice_state,
+                render_context.mix_buffer_count, channel);
+            break;
+        default:
+            LOG_ERROR(Service_Audio, "Invalid SampleFormat {}",
+                      static_cast<u32>(voice_info.sample_format));
+            break;
+        }
+    }
+}
+
+void CommandGenerator::GenerateVoiceMixCommand(std::span<const f32> mix_volumes,
+                                               std::span<const f32> prev_mix_volumes,
+                                               const VoiceState& voice_state, s16 output_index,
+                                               const s16 buffer_count, const s16 input_index,
+                                               const s32 node_id) {
+    u8 precision{15};
+    if (render_context.behavior->IsVolumeMixParameterPrecisionQ23Supported()) {
+        precision = 23;
+    }
+
+    if (buffer_count > 8) {
+        const auto prev_samples{render_context.memory_pool_info->Translate(
+            CpuAddr(voice_state.previous_samples.data()), buffer_count * sizeof(s32))};
+        command_buffer.GenerateMixRampGroupedCommand(node_id, buffer_count, input_index,
+                                                     output_index, mix_volumes, prev_mix_volumes,
+                                                     prev_samples, precision);
+    } else {
+        for (s16 i = 0; i < buffer_count; i++, output_index++) {
+            const auto prev_samples{render_context.memory_pool_info->Translate(
+                CpuAddr(&voice_state.previous_samples[i]), sizeof(s32))};
+
+            command_buffer.GenerateMixRampCommand(node_id, buffer_count, input_index, output_index,
+                                                  mix_volumes[i], prev_mix_volumes[i], prev_samples,
+                                                  precision);
+        }
+    }
+}
+
+void CommandGenerator::GenerateBiquadFilterCommandForVoice(VoiceInfo& voice_info,
+                                                           const VoiceState& voice_state,
+                                                           const s16 buffer_count, const s8 channel,
+                                                           const s32 node_id) {
+    const bool both_biquads_enabled{voice_info.biquads[0].enabled && voice_info.biquads[1].enabled};
+    const auto use_float_processing{render_context.behavior->UseBiquadFilterFloatProcessing()};
+
+    if (both_biquads_enabled && render_context.behavior->UseMultiTapBiquadFilterProcessing() &&
+        use_float_processing) {
+        command_buffer.GenerateMultitapBiquadFilterCommand(node_id, voice_info, voice_state,
+                                                           buffer_count, channel);
+    } else {
+        for (u32 i = 0; i < MaxBiquadFilters; i++) {
+            if (voice_info.biquads[i].enabled) {
+                command_buffer.GenerateBiquadFilterCommand(node_id, voice_info, voice_state,
+                                                           buffer_count, channel, i,
+                                                           use_float_processing);
+            }
+        }
+    }
+}
+
+void CommandGenerator::GenerateVoiceCommand(VoiceInfo& voice_info) {
+    u8 precision{15};
+    if (render_context.behavior->IsVolumeMixParameterPrecisionQ23Supported()) {
+        precision = 23;
+    }
+
+    for (s8 channel = 0; channel < voice_info.channel_count; channel++) {
+        const auto resource_id{voice_info.channel_resource_ids[channel]};
+        auto& voice_state{voice_context.GetDspSharedState(resource_id)};
+        auto& channel_resource{voice_context.GetChannelResource(resource_id)};
+
+        PerformanceDetailType detail_type{PerformanceDetailType::Invalid};
+        switch (voice_info.sample_format) {
+        case SampleFormat::PcmInt16:
+            detail_type = PerformanceDetailType::Unk1;
+            break;
+        case SampleFormat::PcmFloat:
+            detail_type = PerformanceDetailType::Unk10;
+            break;
+        default:
+            detail_type = PerformanceDetailType::Unk2;
+            break;
+        }
+
+        DetailAspect data_source_detail(*this, PerformanceEntryType::Voice, voice_info.node_id,
+                                        detail_type);
+        GenerateDataSourceCommand(voice_info, voice_state, channel);
+
+        if (data_source_detail.initialized) {
+            command_buffer.GeneratePerformanceCommand(data_source_detail.node_id,
+                                                      PerformanceState::Stop,
+                                                      data_source_detail.performance_entry_address);
+        }
+
+        if (voice_info.was_playing) {
+            voice_info.prev_volume = 0.0f;
+            continue;
+        }
+
+        if (!voice_info.HasAnyConnection()) {
+            continue;
+        }
+
+        DetailAspect biquad_detail_aspect(*this, PerformanceEntryType::Voice, voice_info.node_id,
+                                          PerformanceDetailType::Unk4);
+        GenerateBiquadFilterCommandForVoice(
+            voice_info, voice_state, render_context.mix_buffer_count, channel, voice_info.node_id);
+
+        if (biquad_detail_aspect.initialized) {
+            command_buffer.GeneratePerformanceCommand(
+                biquad_detail_aspect.node_id, PerformanceState::Stop,
+                biquad_detail_aspect.performance_entry_address);
+        }
+
+        DetailAspect volume_ramp_detail_aspect(*this, PerformanceEntryType::Voice,
+                                               voice_info.node_id, PerformanceDetailType::Unk3);
+        command_buffer.GenerateVolumeRampCommand(
+            voice_info.node_id, voice_info, render_context.mix_buffer_count + channel, precision);
+        if (volume_ramp_detail_aspect.initialized) {
+            command_buffer.GeneratePerformanceCommand(
+                volume_ramp_detail_aspect.node_id, PerformanceState::Stop,
+                volume_ramp_detail_aspect.performance_entry_address);
+        }
+
+        voice_info.prev_volume = voice_info.volume;
+
+        if (voice_info.mix_id == UnusedMixId) {
+            if (voice_info.splitter_id != UnusedSplitterId) {
+                auto i{channel};
+                auto destination{splitter_context.GetDesintationData(voice_info.splitter_id, i)};
+                while (destination != nullptr) {
+                    if (destination->IsConfigured()) {
+                        const auto mix_id{destination->GetMixId()};
+                        if (mix_id < mix_context.GetCount() &&
+                            static_cast<s32>(mix_id) != UnusedSplitterId) {
+                            auto mix_info{mix_context.GetInfo(mix_id)};
+                            GenerateVoiceMixCommand(
+                                destination->GetMixVolume(), destination->GetMixVolumePrev(),
+                                voice_state, mix_info->buffer_offset, mix_info->buffer_count,
+                                render_context.mix_buffer_count + channel, voice_info.node_id);
+                            destination->MarkAsNeedToUpdateInternalState();
+                        }
+                    }
+                    i += voice_info.channel_count;
+                    destination = splitter_context.GetDesintationData(voice_info.splitter_id, i);
+                }
+            }
+        } else {
+            DetailAspect volume_mix_detail_aspect(*this, PerformanceEntryType::Voice,
+                                                  voice_info.node_id, PerformanceDetailType::Unk3);
+            auto mix_info{mix_context.GetInfo(voice_info.mix_id)};
+            GenerateVoiceMixCommand(channel_resource.mix_volumes, channel_resource.prev_mix_volumes,
+                                    voice_state, mix_info->buffer_offset, mix_info->buffer_count,
+                                    render_context.mix_buffer_count + channel, voice_info.node_id);
+            if (volume_mix_detail_aspect.initialized) {
+                command_buffer.GeneratePerformanceCommand(
+                    volume_mix_detail_aspect.node_id, PerformanceState::Stop,
+                    volume_mix_detail_aspect.performance_entry_address);
+            }
+
+            channel_resource.prev_mix_volumes = channel_resource.mix_volumes;
+        }
+        voice_info.biquad_initialized[0] = voice_info.biquads[0].enabled;
+        voice_info.biquad_initialized[1] = voice_info.biquads[1].enabled;
+    }
+}
+
+void CommandGenerator::GenerateVoiceCommands() {
+    const auto voice_count{voice_context.GetCount()};
+
+    for (u32 i = 0; i < voice_count; i++) {
+        auto sorted_info{voice_context.GetSortedInfo(i)};
+
+        if (sorted_info->ShouldSkip() || !sorted_info->UpdateForCommandGeneration(voice_context)) {
+            continue;
+        }
+
+        EntryAspect voice_entry_aspect(*this, PerformanceEntryType::Voice, sorted_info->node_id);
+
+        GenerateVoiceCommand(*sorted_info);
+
+        if (voice_entry_aspect.initialized) {
+            command_buffer.GeneratePerformanceCommand(voice_entry_aspect.node_id,
+                                                      PerformanceState::Stop,
+                                                      voice_entry_aspect.performance_entry_address);
+        }
+    }
+
+    splitter_context.UpdateInternalState();
+}
+
+void CommandGenerator::GenerateBufferMixerCommand(const s16 buffer_offset,
+                                                  EffectInfoBase& effect_info, const s32 node_id) {
+    u8 precision{15};
+    if (render_context.behavior->IsVolumeMixParameterPrecisionQ23Supported()) {
+        precision = 23;
+    }
+
+    if (effect_info.IsEnabled()) {
+        const auto& parameter{
+            *reinterpret_cast<BufferMixerInfo::ParameterVersion1*>(effect_info.GetParameter())};
+        for (u32 i = 0; i < parameter.mix_count; i++) {
+            if (parameter.volumes[i] != 0.0f) {
+                command_buffer.GenerateMixCommand(node_id, buffer_offset + parameter.inputs[i],
+                                                  buffer_offset + parameter.outputs[i],
+                                                  buffer_offset, parameter.volumes[i], precision);
+            }
+        }
+    }
+}
+
+void CommandGenerator::GenerateDelayCommand(const s16 buffer_offset, EffectInfoBase& effect_info,
+                                            const s32 node_id) {
+    command_buffer.GenerateDelayCommand(node_id, effect_info, buffer_offset);
+}
+
+void CommandGenerator::GenerateReverbCommand(const s16 buffer_offset, EffectInfoBase& effect_info,
+                                             const s32 node_id,
+                                             const bool long_size_pre_delay_supported) {
+    command_buffer.GenerateReverbCommand(node_id, effect_info, buffer_offset,
+                                         long_size_pre_delay_supported);
+}
+
+void CommandGenerator::GenerateI3dl2ReverbEffectCommand(const s16 buffer_offset,
+                                                        EffectInfoBase& effect_info,
+                                                        const s32 node_id) {
+    command_buffer.GenerateI3dl2ReverbCommand(node_id, effect_info, buffer_offset);
+}
+
+void CommandGenerator::GenerateAuxCommand(const s16 buffer_offset, EffectInfoBase& effect_info,
+                                          const s32 node_id) {
+
+    if (effect_info.IsEnabled()) {
+        effect_info.GetWorkbuffer(0);
+        effect_info.GetWorkbuffer(1);
+    }
+
+    if (effect_info.GetSendBuffer() != 0 && effect_info.GetReturnBuffer() != 0) {
+        const auto& parameter{
+            *reinterpret_cast<AuxInfo::ParameterVersion1*>(effect_info.GetParameter())};
+        auto channel_index{parameter.mix_buffer_count - 1};
+        u32 write_offset{0};
+        for (u32 i = 0; i < parameter.mix_buffer_count; i++, channel_index--) {
+            auto new_update_count{command_header.sample_count + write_offset};
+            const auto update_count{channel_index > 0 ? 0 : new_update_count};
+            command_buffer.GenerateAuxCommand(node_id, effect_info, parameter.inputs[i],
+                                              parameter.outputs[i], buffer_offset, update_count,
+                                              parameter.count_max, write_offset);
+            write_offset = new_update_count;
+        }
+    }
+}
+
+void CommandGenerator::GenerateBiquadFilterEffectCommand(const s16 buffer_offset,
+                                                         EffectInfoBase& effect_info,
+                                                         const s32 node_id) {
+    const auto& parameter{
+        *reinterpret_cast<BiquadFilterInfo::ParameterVersion1*>(effect_info.GetParameter())};
+    if (effect_info.IsEnabled()) {
+        bool needs_init{false};
+
+        switch (parameter.state) {
+        case EffectInfoBase::ParameterState::Initialized:
+            needs_init = true;
+            break;
+        case EffectInfoBase::ParameterState::Updating:
+        case EffectInfoBase::ParameterState::Updated:
+            if (render_context.behavior->IsBiquadFilterEffectStateClearBugFixed()) {
+                needs_init = false;
+            } else {
+                needs_init = parameter.state == EffectInfoBase::ParameterState::Updating;
+            }
+            break;
+        default:
+            LOG_ERROR(Service_Audio, "Invalid biquad parameter state {}",
+                      static_cast<u32>(parameter.state));
+            break;
+        }
+
+        for (s8 channel = 0; channel < parameter.channel_count; channel++) {
+            command_buffer.GenerateBiquadFilterCommand(
+                node_id, effect_info, buffer_offset, channel, needs_init,
+                render_context.behavior->UseBiquadFilterFloatProcessing());
+        }
+    } else {
+        for (s8 channel = 0; channel < parameter.channel_count; channel++) {
+            command_buffer.GenerateCopyMixBufferCommand(node_id, effect_info, buffer_offset,
+                                                        channel);
+        }
+    }
+}
+
+void CommandGenerator::GenerateLightLimiterEffectCommand(const s16 buffer_offset,
+                                                         EffectInfoBase& effect_info,
+                                                         const s32 node_id,
+                                                         const u32 effect_index) {
+
+    const auto& state{*reinterpret_cast<LightLimiterInfo::State*>(effect_info.GetStateBuffer())};
+
+    if (render_context.behavior->IsEffectInfoVersion2Supported()) {
+        const auto& parameter{
+            *reinterpret_cast<LightLimiterInfo::ParameterVersion2*>(effect_info.GetParameter())};
+        const auto& result_state{*reinterpret_cast<LightLimiterInfo::StatisticsInternal*>(
+            &effect_context.GetDspSharedResultState(effect_index))};
+        command_buffer.GenerateLightLimiterCommand(node_id, buffer_offset, parameter, result_state,
+                                                   state, effect_info.IsEnabled(),
+                                                   effect_info.GetWorkbuffer(-1));
+    } else {
+        const auto& parameter{
+            *reinterpret_cast<LightLimiterInfo::ParameterVersion1*>(effect_info.GetParameter())};
+        command_buffer.GenerateLightLimiterCommand(node_id, buffer_offset, parameter, state,
+                                                   effect_info.IsEnabled(),
+                                                   effect_info.GetWorkbuffer(-1));
+    }
+}
+
+void CommandGenerator::GenerateCaptureCommand(const s16 buffer_offset, EffectInfoBase& effect_info,
+                                              const s32 node_id) {
+    if (effect_info.IsEnabled()) {
+        effect_info.GetWorkbuffer(0);
+    }
+
+    if (effect_info.GetSendBuffer()) {
+        const auto& parameter{
+            *reinterpret_cast<AuxInfo::ParameterVersion1*>(effect_info.GetParameter())};
+        auto channel_index{parameter.mix_buffer_count - 1};
+        u32 write_offset{0};
+        for (u32 i = 0; i < parameter.mix_buffer_count; i++, channel_index--) {
+            auto new_update_count{command_header.sample_count + write_offset};
+            const auto update_count{channel_index > 0 ? 0 : new_update_count};
+            command_buffer.GenerateCaptureCommand(node_id, effect_info, parameter.inputs[i],
+                                                  parameter.outputs[i], buffer_offset, update_count,
+                                                  parameter.count_max, write_offset);
+            write_offset = new_update_count;
+        }
+    }
+}
+
+void CommandGenerator::GenerateCompressorCommand(const s16 buffer_offset,
+                                                 EffectInfoBase& effect_info, const s32 node_id) {
+    command_buffer.GenerateCompressorCommand(buffer_offset, effect_info, node_id);
+}
+
+void CommandGenerator::GenerateEffectCommand(MixInfo& mix_info) {
+    const auto effect_count{effect_context.GetCount()};
+    for (u32 i = 0; i < effect_count; i++) {
+        const auto effect_index{mix_info.effect_order_buffer[i]};
+        if (effect_index == -1) {
+            break;
+        }
+
+        auto& effect_info = effect_context.GetInfo(effect_index);
+        if (effect_info.ShouldSkip()) {
+            continue;
+        }
+
+        const auto entry_type{mix_info.mix_id == FinalMixId ? PerformanceEntryType::FinalMix
+                                                            : PerformanceEntryType::SubMix};
+
+        switch (effect_info.GetType()) {
+        case EffectInfoBase::Type::Mix: {
+            DetailAspect mix_detail_aspect(*this, entry_type, mix_info.node_id,
+                                           PerformanceDetailType::Unk5);
+            GenerateBufferMixerCommand(mix_info.buffer_offset, effect_info, mix_info.node_id);
+            if (mix_detail_aspect.initialized) {
+                command_buffer.GeneratePerformanceCommand(
+                    mix_detail_aspect.node_id, PerformanceState::Stop,
+                    mix_detail_aspect.performance_entry_address);
+            }
+        } break;
+
+        case EffectInfoBase::Type::Aux: {
+            DetailAspect aux_detail_aspect(*this, entry_type, mix_info.node_id,
+                                           PerformanceDetailType::Unk7);
+            GenerateAuxCommand(mix_info.buffer_offset, effect_info, mix_info.node_id);
+            if (aux_detail_aspect.initialized) {
+                command_buffer.GeneratePerformanceCommand(
+                    aux_detail_aspect.node_id, PerformanceState::Stop,
+                    aux_detail_aspect.performance_entry_address);
+            }
+        } break;
+
+        case EffectInfoBase::Type::Delay: {
+            DetailAspect delay_detail_aspect(*this, entry_type, mix_info.node_id,
+                                             PerformanceDetailType::Unk6);
+            GenerateDelayCommand(mix_info.buffer_offset, effect_info, mix_info.node_id);
+            if (delay_detail_aspect.initialized) {
+                command_buffer.GeneratePerformanceCommand(
+                    delay_detail_aspect.node_id, PerformanceState::Stop,
+                    delay_detail_aspect.performance_entry_address);
+            }
+        } break;
+
+        case EffectInfoBase::Type::Reverb: {
+            DetailAspect reverb_detail_aspect(*this, entry_type, mix_info.node_id,
+                                              PerformanceDetailType::Unk8);
+            GenerateReverbCommand(mix_info.buffer_offset, effect_info, mix_info.node_id,
+                                  render_context.behavior->IsLongSizePreDelaySupported());
+            if (reverb_detail_aspect.initialized) {
+                command_buffer.GeneratePerformanceCommand(
+                    reverb_detail_aspect.node_id, PerformanceState::Stop,
+                    reverb_detail_aspect.performance_entry_address);
+            }
+        } break;
+
+        case EffectInfoBase::Type::I3dl2Reverb: {
+            DetailAspect i3dl2_detail_aspect(*this, entry_type, mix_info.node_id,
+                                             PerformanceDetailType::Unk9);
+            GenerateI3dl2ReverbEffectCommand(mix_info.buffer_offset, effect_info, mix_info.node_id);
+            if (i3dl2_detail_aspect.initialized) {
+                command_buffer.GeneratePerformanceCommand(
+                    i3dl2_detail_aspect.node_id, PerformanceState::Stop,
+                    i3dl2_detail_aspect.performance_entry_address);
+            }
+        } break;
+
+        case EffectInfoBase::Type::BiquadFilter: {
+            DetailAspect biquad_detail_aspect(*this, entry_type, mix_info.node_id,
+                                              PerformanceDetailType::Unk4);
+            GenerateBiquadFilterEffectCommand(mix_info.buffer_offset, effect_info,
+                                              mix_info.node_id);
+            if (biquad_detail_aspect.initialized) {
+                command_buffer.GeneratePerformanceCommand(
+                    biquad_detail_aspect.node_id, PerformanceState::Stop,
+                    biquad_detail_aspect.performance_entry_address);
+            }
+        } break;
+
+        case EffectInfoBase::Type::LightLimiter: {
+            DetailAspect light_limiter_detail_aspect(*this, entry_type, mix_info.node_id,
+                                                     PerformanceDetailType::Unk11);
+            GenerateLightLimiterEffectCommand(mix_info.buffer_offset, effect_info, mix_info.node_id,
+                                              effect_index);
+            if (light_limiter_detail_aspect.initialized) {
+                command_buffer.GeneratePerformanceCommand(
+                    light_limiter_detail_aspect.node_id, PerformanceState::Stop,
+                    light_limiter_detail_aspect.performance_entry_address);
+            }
+        } break;
+
+        case EffectInfoBase::Type::Capture: {
+            DetailAspect capture_detail_aspect(*this, entry_type, mix_info.node_id,
+                                               PerformanceDetailType::Unk12);
+            GenerateCaptureCommand(mix_info.buffer_offset, effect_info, mix_info.node_id);
+            if (capture_detail_aspect.initialized) {
+                command_buffer.GeneratePerformanceCommand(
+                    capture_detail_aspect.node_id, PerformanceState::Stop,
+                    capture_detail_aspect.performance_entry_address);
+            }
+        } break;
+
+        case EffectInfoBase::Type::Compressor: {
+            DetailAspect capture_detail_aspect(*this, entry_type, mix_info.node_id,
+                                               PerformanceDetailType::Unk13);
+            GenerateCompressorCommand(mix_info.buffer_offset, effect_info, mix_info.node_id);
+            if (capture_detail_aspect.initialized) {
+                command_buffer.GeneratePerformanceCommand(
+                    capture_detail_aspect.node_id, PerformanceState::Stop,
+                    capture_detail_aspect.performance_entry_address);
+            }
+        } break;
+
+        default:
+            LOG_ERROR(Service_Audio, "Invalid effect type {}",
+                      static_cast<u32>(effect_info.GetType()));
+            break;
+        }
+
+        effect_info.UpdateForCommandGeneration();
+    }
+}
+
+void CommandGenerator::GenerateMixCommands(MixInfo& mix_info) {
+    u8 precision{15};
+    if (render_context.behavior->IsVolumeMixParameterPrecisionQ23Supported()) {
+        precision = 23;
+    }
+
+    if (!mix_info.HasAnyConnection()) {
+        return;
+    }
+
+    if (mix_info.dst_mix_id == UnusedMixId) {
+        if (mix_info.dst_splitter_id != UnusedSplitterId) {
+            s16 dest_id{0};
+            auto destination{
+                splitter_context.GetDesintationData(mix_info.dst_splitter_id, dest_id)};
+            while (destination != nullptr) {
+                if (destination->IsConfigured()) {
+                    auto splitter_mix_id{destination->GetMixId()};
+                    if (splitter_mix_id < mix_context.GetCount()) {
+                        auto splitter_mix_info{mix_context.GetInfo(splitter_mix_id)};
+                        const s16 input_index{static_cast<s16>(mix_info.buffer_offset +
+                                                               (dest_id % mix_info.buffer_count))};
+                        for (s16 i = 0; i < splitter_mix_info->buffer_count; i++) {
+                            auto volume{mix_info.volume * destination->GetMixVolume(i)};
+                            if (volume != 0.0f) {
+                                command_buffer.GenerateMixCommand(
+                                    mix_info.node_id, input_index,
+                                    splitter_mix_info->buffer_offset + i, mix_info.buffer_offset,
+                                    volume, precision);
+                            }
+                        }
+                    }
+                }
+                dest_id++;
+                destination =
+                    splitter_context.GetDesintationData(mix_info.dst_splitter_id, dest_id);
+            }
+        }
+    } else {
+        auto dest_mix_info{mix_context.GetInfo(mix_info.dst_mix_id)};
+        for (s16 i = 0; i < mix_info.buffer_count; i++) {
+            for (s16 j = 0; j < dest_mix_info->buffer_count; j++) {
+                auto volume{mix_info.volume * mix_info.mix_volumes[i][j]};
+                if (volume != 0.0f) {
+                    command_buffer.GenerateMixCommand(mix_info.node_id, mix_info.buffer_offset + i,
+                                                      dest_mix_info->buffer_offset + j,
+                                                      mix_info.buffer_offset, volume, precision);
+                }
+            }
+        }
+    }
+}
+
+void CommandGenerator::GenerateSubMixCommand(MixInfo& mix_info) {
+    command_buffer.GenerateDepopForMixBuffersCommand(mix_info.node_id, mix_info,
+                                                     render_context.depop_buffer);
+    GenerateEffectCommand(mix_info);
+
+    DetailAspect mix_detail_aspect(*this, PerformanceEntryType::SubMix, mix_info.node_id,
+                                   PerformanceDetailType::Unk5);
+
+    GenerateMixCommands(mix_info);
+
+    if (mix_detail_aspect.initialized) {
+        command_buffer.GeneratePerformanceCommand(mix_detail_aspect.node_id, PerformanceState::Stop,
+                                                  mix_detail_aspect.performance_entry_address);
+    }
+}
+
+void CommandGenerator::GenerateSubMixCommands() {
+    const auto submix_count{mix_context.GetCount()};
+    for (s32 i = 0; i < submix_count; i++) {
+        auto sorted_info{mix_context.GetSortedInfo(i)};
+        if (!sorted_info->in_use || sorted_info->mix_id == FinalMixId) {
+            continue;
+        }
+
+        EntryAspect submix_entry_aspect(*this, PerformanceEntryType::SubMix, sorted_info->node_id);
+
+        GenerateSubMixCommand(*sorted_info);
+
+        if (submix_entry_aspect.initialized) {
+            command_buffer.GeneratePerformanceCommand(
+                submix_entry_aspect.node_id, PerformanceState::Stop,
+                submix_entry_aspect.performance_entry_address);
+        }
+    }
+}
+
+void CommandGenerator::GenerateFinalMixCommand() {
+    auto& final_mix_info{*mix_context.GetFinalMixInfo()};
+
+    command_buffer.GenerateDepopForMixBuffersCommand(final_mix_info.node_id, final_mix_info,
+                                                     render_context.depop_buffer);
+    GenerateEffectCommand(final_mix_info);
+
+    u8 precision{15};
+    if (render_context.behavior->IsVolumeMixParameterPrecisionQ23Supported()) {
+        precision = 23;
+    }
+
+    for (s16 i = 0; i < final_mix_info.buffer_count; i++) {
+        DetailAspect volume_aspect(*this, PerformanceEntryType::FinalMix, final_mix_info.node_id,
+                                   PerformanceDetailType::Unk3);
+        command_buffer.GenerateVolumeCommand(final_mix_info.node_id, final_mix_info.buffer_offset,
+                                             i, final_mix_info.volume, precision);
+        if (volume_aspect.initialized) {
+            command_buffer.GeneratePerformanceCommand(volume_aspect.node_id, PerformanceState::Stop,
+                                                      volume_aspect.performance_entry_address);
+        }
+    }
+}
+
+void CommandGenerator::GenerateFinalMixCommands() {
+    auto final_mix_info{mix_context.GetFinalMixInfo()};
+    EntryAspect final_mix_entry(*this, PerformanceEntryType::FinalMix, final_mix_info->node_id);
+    GenerateFinalMixCommand();
+    if (final_mix_entry.initialized) {
+        command_buffer.GeneratePerformanceCommand(final_mix_entry.node_id, PerformanceState::Stop,
+                                                  final_mix_entry.performance_entry_address);
+    }
+}
+
+void CommandGenerator::GenerateSinkCommands() {
+    const auto sink_count{sink_context.GetCount()};
+
+    for (u32 i = 0; i < sink_count; i++) {
+        auto sink_info{sink_context.GetInfo(i)};
+        if (sink_info->IsUsed() && sink_info->GetType() == SinkInfoBase::Type::DeviceSink) {
+            auto state{reinterpret_cast<DeviceSinkInfo::DeviceState*>(sink_info->GetState())};
+            if (command_header.sample_rate != TargetSampleRate &&
+                state->upsampler_info == nullptr) {
+                auto device_state{sink_info->GetDeviceState()};
+                device_state->upsampler_info = render_context.upsampler_manager->Allocate();
+            }
+
+            EntryAspect device_sink_entry(*this, PerformanceEntryType::Sink,
+                                          sink_info->GetNodeId());
+            auto final_mix{mix_context.GetFinalMixInfo()};
+            GenerateSinkCommand(final_mix->buffer_offset, *sink_info);
+
+            if (device_sink_entry.initialized) {
+                command_buffer.GeneratePerformanceCommand(
+                    device_sink_entry.node_id, PerformanceState::Stop,
+                    device_sink_entry.performance_entry_address);
+            }
+        }
+    }
+
+    for (u32 i = 0; i < sink_count; i++) {
+        auto sink_info{sink_context.GetInfo(i)};
+        if (sink_info->IsUsed() && sink_info->GetType() == SinkInfoBase::Type::CircularBufferSink) {
+            EntryAspect circular_buffer_entry(*this, PerformanceEntryType::Sink,
+                                              sink_info->GetNodeId());
+            auto final_mix{mix_context.GetFinalMixInfo()};
+            GenerateSinkCommand(final_mix->buffer_offset, *sink_info);
+
+            if (circular_buffer_entry.initialized) {
+                command_buffer.GeneratePerformanceCommand(
+                    circular_buffer_entry.node_id, PerformanceState::Stop,
+                    circular_buffer_entry.performance_entry_address);
+            }
+        }
+    }
+}
+
+void CommandGenerator::GenerateSinkCommand(const s16 buffer_offset, SinkInfoBase& sink_info) {
+    if (sink_info.ShouldSkip()) {
+        return;
+    }
+
+    switch (sink_info.GetType()) {
+    case SinkInfoBase::Type::DeviceSink:
+        GenerateDeviceSinkCommand(buffer_offset, sink_info);
+        break;
+
+    case SinkInfoBase::Type::CircularBufferSink:
+        command_buffer.GenerateCircularBufferSinkCommand(sink_info.GetNodeId(), sink_info,
+                                                         buffer_offset);
+        break;
+
+    default:
+        LOG_ERROR(Service_Audio, "Invalid sink type {}", static_cast<u32>(sink_info.GetType()));
+        break;
+    }
+
+    sink_info.UpdateForCommandGeneration();
+}
+
+void CommandGenerator::GenerateDeviceSinkCommand(const s16 buffer_offset, SinkInfoBase& sink_info) {
+    auto& parameter{
+        *reinterpret_cast<DeviceSinkInfo::DeviceInParameter*>(sink_info.GetParameter())};
+    auto state{*reinterpret_cast<DeviceSinkInfo::DeviceState*>(sink_info.GetState())};
+
+    if (render_context.channels == 2 && parameter.downmix_enabled) {
+        command_buffer.GenerateDownMix6chTo2chCommand(InvalidNodeId, parameter.inputs,
+                                                      buffer_offset, parameter.downmix_coeff);
+    }
+
+    if (state.upsampler_info != nullptr) {
+        command_buffer.GenerateUpsampleCommand(
+            InvalidNodeId, buffer_offset, *state.upsampler_info, parameter.input_count,
+            parameter.inputs, command_header.buffer_count, command_header.sample_count,
+            command_header.sample_rate);
+    }
+
+    command_buffer.GenerateDeviceSinkCommand(InvalidNodeId, buffer_offset, sink_info,
+                                             render_context.session_id,
+                                             command_header.samples_buffer);
+}
+
+void CommandGenerator::GeneratePerformanceCommand(
+    s32 node_id, PerformanceState state, const PerformanceEntryAddresses& entry_addresses) {
+    command_buffer.GeneratePerformanceCommand(node_id, state, entry_addresses);
+}
+
+} // namespace AudioCore::AudioRenderer

src/audio_core/renderer/command/command_generator.h

@@ -0,0 +1,349 @@
+// SPDX-FileCopyrightText: Copyright 2022 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#include <span>
+
+#include "audio_core/renderer/command/commands.h"
+#include "audio_core/renderer/performance/performance_manager.h"
+#include "common/common_types.h"
+
+namespace AudioCore {
+struct AudioRendererSystemContext;
+
+namespace AudioRenderer {
+class CommandBuffer;
+struct CommandListHeader;
+class VoiceContext;
+class MixContext;
+class EffectContext;
+class SplitterContext;
+class SinkContext;
+class BehaviorInfo;
+class VoiceInfo;
+struct VoiceState;
+class MixInfo;
+class SinkInfoBase;
+
+/**
+ * Generates all commands to build up a command list, which are sent to the AudioRender for
+ * processing.
+ */
+class CommandGenerator {
+public:
+    explicit CommandGenerator(CommandBuffer& command_buffer,
+                              const CommandListHeader& command_list_header,
+                              const AudioRendererSystemContext& render_context,
+                              VoiceContext& voice_context, MixContext& mix_context,
+                              EffectContext& effect_context, SinkContext& sink_context,
+                              SplitterContext& splitter_context,
+                              PerformanceManager* performance_manager);
+
+    /**
+     * Calculate the buffer size needed for commands.
+     *
+     * @param behavior - Used to check what features are enabled.
+     * @param params    - Input rendering parameters for numbers of voices/mixes/sinks etc.
+     */
+    static u64 CalculateCommandBufferSize(const BehaviorInfo& behavior,
+                                          const AudioRendererParameterInternal& params) {
+        u64 size{0};
+
+        // Effects
+        size += params.effects * sizeof(EffectInfoBase);
+
+        // Voices
+        u64 voice_size{0};
+        if (behavior.IsWaveBufferVer2Supported()) {
+            voice_size = std::max(std::max(sizeof(AdpcmDataSourceVersion2Command),
+                                           sizeof(PcmInt16DataSourceVersion2Command)),
+                                  sizeof(PcmFloatDataSourceVersion2Command));
+        } else {
+            voice_size = std::max(std::max(sizeof(AdpcmDataSourceVersion1Command),
+                                           sizeof(PcmInt16DataSourceVersion1Command)),
+                                  sizeof(PcmFloatDataSourceVersion1Command));
+        }
+        voice_size += sizeof(BiquadFilterCommand) * MaxBiquadFilters;
+        voice_size += sizeof(VolumeRampCommand);
+        voice_size += sizeof(MixRampGroupedCommand);
+
+        size += params.voices * (params.splitter_infos * sizeof(DepopPrepareCommand) + voice_size);
+
+        // Sub mixes
+        size += sizeof(DepopForMixBuffersCommand) +
+                (sizeof(MixCommand) * MaxMixBuffers) * MaxMixBuffers;
+
+        // Final mix
+        size += sizeof(DepopForMixBuffersCommand) + sizeof(VolumeCommand) * MaxMixBuffers;
+
+        // Splitters
+        size += params.splitter_destinations * sizeof(MixRampCommand) * MaxMixBuffers;
+
+        // Sinks
+        size +=
+            params.sinks * std::max(sizeof(DeviceSinkCommand), sizeof(CircularBufferSinkCommand));
+
+        // Performance
+        size += (params.effects + params.voices + params.sinks + params.sub_mixes + 1 +
+                 PerformanceManager::MaxDetailEntries) *
+                sizeof(PerformanceCommand);
+        return size;
+    }
+
+    /**
+     * Get the current command buffer used to generate commands.
+     *
+     * @return The command buffer.
+     */
+    CommandBuffer& GetCommandBuffer() {
+        return command_buffer;
+    }
+
+    /**
+     * Get the current performance manager,
+     *
+     * @return The performance manager. May be nullptr.
+     */
+    PerformanceManager* GetPerformanceManager() {
+        return performance_manager;
+    }
+
+    /**
+     * Generate a data source command.
+     * These are the basis for all audio output.
+     *
+     * @param voice_info  - Generate the command from this voice.
+     * @param voice_state - State used by the AudioRenderer across calls.
+     * @param channel     - Channel index to generate the command into.
+     */
+    void GenerateDataSourceCommand(VoiceInfo& voice_info, const VoiceState& voice_state,
+                                   s8 channel);
+
+    /**
+     * Generate voice mixing commands.
+     * These are used to mix buffers together, to mix one input to many outputs,
+     * and also used as copy commands to move data around and prevent it being accidentally
+     * overwritten, e.g by another data source command into the same channel.
+     *
+     * @param mix_volumes      - Current volumes of the mix.
+     * @param prev_mix_volumes - Previous volumes of the mix.
+     * @param voice_state      - State used by the AudioRenderer across calls.
+     * @param output_index     - Output mix buffer index.
+     * @param buffer_count     - Number of active mix buffers.
+     * @param input_index      - Input mix buffer index.
+     * @param node_id          - Node id of the voice this command is generated for.
+     */
+    void GenerateVoiceMixCommand(std::span<const f32> mix_volumes,
+                                 std::span<const f32> prev_mix_volumes,
+                                 const VoiceState& voice_state, s16 output_index, s16 buffer_count,
+                                 s16 input_index, s32 node_id);
+
+    /**
+     * Generate a biquad filter command for a voice.
+     *
+     * @param voice_info   - Voice info this command is generated from.
+     * @param voice_state  - State used by the AudioRenderer across calls.
+     * @param buffer_count - Number of active mix buffers.
+     * @param channel      - Channel index of this command.
+     * @param node_id      - Node id of the voice this command is generated for.
+     */
+    void GenerateBiquadFilterCommandForVoice(VoiceInfo& voice_info, const VoiceState& voice_state,
+                                             s16 buffer_count, s8 channel, s32 node_id);
+
+    /**
+     * Generate commands for a voice.
+     * Includes a data source, biquad filter, volume and mixing.
+     *
+     * @param voice_info - Voice info these commands are generated from.
+     */
+    void GenerateVoiceCommand(VoiceInfo& voice_info);
+
+    /**
+     * Generate commands for all voices.
+     */
+    void GenerateVoiceCommands();
+
+    /**
+     * Generate a mixing command.
+     *
+     * @param buffer_offset    - Base mix buffer offset to use.
+     * @param effect_info_base - BufferMixer effect info.
+     * @param node_id          - Node id of the mix this command is generated for.
+     */
+    void GenerateBufferMixerCommand(s16 buffer_offset, EffectInfoBase& effect_info_base,
+                                    s32 node_id);
+
+    /**
+     * Generate a delay effect command.
+     *
+     * @param buffer_offset    - Base mix buffer offset to use.
+     * @param effect_info_base - Delay effect info.
+     * @param node_id          - Node id of the mix this command is generated for.
+     */
+    void GenerateDelayCommand(s16 buffer_offset, EffectInfoBase& effect_info_base, s32 node_id);
+
+    /**
+     * Generate a reverb effect command.
+     *
+     * @param buffer_offset                 - Base mix buffer offset to use.
+     * @param effect_info_base              - Reverb effect info.
+     * @param node_id                       - Node id of the mix this command is generated for.
+     * @param long_size_pre_delay_supported - Use a longer pre-delay time before reverb starts.
+     */
+    void GenerateReverbCommand(s16 buffer_offset, EffectInfoBase& effect_info_base, s32 node_id,
+                               bool long_size_pre_delay_supported);
+
+    /**
+     * Generate an I3DL2 reverb effect command.
+     *
+     * @param buffer_offset    - Base mix buffer offset to use.
+     * @param effect_info_base - I3DL2Reverb effect info.
+     * @param node_id          - Node id of the mix this command is generated for.
+     */
+    void GenerateI3dl2ReverbEffectCommand(s16 buffer_offset, EffectInfoBase& effect_info,
+                                          s32 node_id);
+
+    /**
+     * Generate an aux effect command.
+     *
+     * @param buffer_offset    - Base mix buffer offset to use.
+     * @param effect_info_base - Aux effect info.
+     * @param node_id          - Node id of the mix this command is generated for.
+     */
+    void GenerateAuxCommand(s16 buffer_offset, EffectInfoBase& effect_info, s32 node_id);
+
+    /**
+     * Generate a biquad filter effect command.
+     *
+     * @param buffer_offset    - Base mix buffer offset to use.
+     * @param effect_info_base - Aux effect info.
+     * @param node_id          - Node id of the mix this command is generated for.
+     */
+    void GenerateBiquadFilterEffectCommand(s16 buffer_offset, EffectInfoBase& effect_info,
+                                           s32 node_id);
+
+    /**
+     * Generate a light limiter effect command.
+     *
+     * @param buffer_offset    - Base mix buffer offset to use.
+     * @param effect_info_base - Limiter effect info.
+     * @param node_id          - Node id of the mix this command is generated for.
+     * @param effect_index     - Index for the statistics state.
+     */
+    void GenerateLightLimiterEffectCommand(s16 buffer_offset, EffectInfoBase& effect_info,
+                                           s32 node_id, u32 effect_index);
+
+    /**
+     * Generate a capture effect command.
+     * Writes a mix buffer back to game memory.
+     *
+     * @param buffer_offset    - Base mix buffer offset to use.
+     * @param effect_info_base - Capture effect info.
+     * @param node_id          - Node id of the mix this command is generated for.
+     */
+    void GenerateCaptureCommand(s16 buffer_offset, EffectInfoBase& effect_info, s32 node_id);
+
+    /**
+     * Generate a compressor effect command.
+     *
+     * @param buffer_offset    - Base mix buffer offset to use.
+     * @param effect_info_base - Compressor effect info.
+     * @param node_id          - Node id of the mix this command is generated for.
+     */
+    void GenerateCompressorCommand(const s16 buffer_offset, EffectInfoBase& effect_info,
+                                   const s32 node_id);
+
+    /**
+     * Generate all effect commands for a mix.
+     *
+     * @param mix_info - Mix to generate effects from.
+     */
+    void GenerateEffectCommand(MixInfo& mix_info);
+
+    /**
+     * Generate all mix commands.
+     *
+     * @param mix_info - Mix to generate effects from.
+     */
+    void GenerateMixCommands(MixInfo& mix_info);
+
+    /**
+     * Generate a submix command.
+     * Generates all effects and all mixing commands.
+     *
+     * @param mix_info - Mix to generate effects from.
+     */
+    void GenerateSubMixCommand(MixInfo& mix_info);
+
+    /**
+     * Generate all submix command.
+     */
+    void GenerateSubMixCommands();
+
+    /**
+     * Generate the final mix.
+     */
+    void GenerateFinalMixCommand();
+
+    /**
+     * Generate the final mix commands.
+     */
+    void GenerateFinalMixCommands();
+
+    /**
+     * Generate all sink commands.
+     */
+    void GenerateSinkCommands();
+
+    /**
+     * Generate a sink command.
+     * Sends samples out to the backend, or a game-supplied circular buffer.
+     *
+     * @param buffer_offset - Base mix buffer offset to use.
+     * @param sink_info     - Sink info to generate the commands from.
+     */
+    void GenerateSinkCommand(s16 buffer_offset, SinkInfoBase& sink_info);
+
+    /**
+     * Generate a device sink command.
+     * Sends samples out to the backend.
+     *
+     * @param buffer_offset - Base mix buffer offset to use.
+     * @param sink_info     - Sink info to generate the commands from.
+     */
+    void GenerateDeviceSinkCommand(s16 buffer_offset, SinkInfoBase& sink_info);
+
+    /**
+     * Generate a performance command.
+     * Used to report performance metrics of the AudioRenderer back to the game.
+     *
+     * @param buffer_offset - Base mix buffer offset to use.
+     * @param sink_info     - Sink info to generate the commands from.
+     */
+    void GeneratePerformanceCommand(s32 node_id, PerformanceState state,
+                                    const PerformanceEntryAddresses& entry_addresses);
+
+private:
+    /// Commands will be written by this buffer
+    CommandBuffer& command_buffer;
+    /// Header information for the commands generated
+    const CommandListHeader& command_header;
+    /// Various things to control generation
+    const AudioRendererSystemContext& render_context;
+    /// Used for generating voices
+    VoiceContext& voice_context;
+    /// Used for generating mixes
+    MixContext& mix_context;
+    /// Used for generating effects
+    EffectContext& effect_context;
+    /// Used for generating sinks
+    SinkContext& sink_context;
+    /// Used for generating submixes
+    SplitterContext& splitter_context;
+    /// Used for generating performance
+    PerformanceManager* performance_manager;
+};
+
+} // namespace AudioRenderer
+} // namespace AudioCore

src/audio_core/renderer/command/command_list_header.h

@@ -0,0 +1,22 @@
+// SPDX-FileCopyrightText: Copyright 2022 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#include <span>
+
+#include "audio_core/common/common.h"
+#include "common/common_types.h"
+
+namespace AudioCore::AudioRenderer {
+
+struct CommandListHeader {
+    u64 buffer_size;
+    u32 command_count;
+    std::span<s32> samples_buffer;
+    s16 buffer_count;
+    u32 sample_count;
+    u32 sample_rate;
+};
+
+} // namespace AudioCore::AudioRenderer

src/audio_core/renderer/command/command_processing_time_estimator.h

@@ -0,0 +1,254 @@
+// SPDX-FileCopyrightText: Copyright 2022 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#include "audio_core/renderer/command/commands.h"
+#include "common/common_types.h"
+
+namespace AudioCore::AudioRenderer {
+/**
+ * Estimate the processing time required for all commands.
+ */
+class ICommandProcessingTimeEstimator {
+public:
+    virtual ~ICommandProcessingTimeEstimator() = default;
+
+    virtual u32 Estimate(const PcmInt16DataSourceVersion1Command& command) const = 0;
+    virtual u32 Estimate(const PcmInt16DataSourceVersion2Command& command) const = 0;
+    virtual u32 Estimate(const PcmFloatDataSourceVersion1Command& command) const = 0;
+    virtual u32 Estimate(const PcmFloatDataSourceVersion2Command& command) const = 0;
+    virtual u32 Estimate(const AdpcmDataSourceVersion1Command& command) const = 0;
+    virtual u32 Estimate(const AdpcmDataSourceVersion2Command& command) const = 0;
+    virtual u32 Estimate(const VolumeCommand& command) const = 0;
+    virtual u32 Estimate(const VolumeRampCommand& command) const = 0;
+    virtual u32 Estimate(const BiquadFilterCommand& command) const = 0;
+    virtual u32 Estimate(const MixCommand& command) const = 0;
+    virtual u32 Estimate(const MixRampCommand& command) const = 0;
+    virtual u32 Estimate(const MixRampGroupedCommand& command) const = 0;
+    virtual u32 Estimate(const DepopPrepareCommand& command) const = 0;
+    virtual u32 Estimate(const DepopForMixBuffersCommand& command) const = 0;
+    virtual u32 Estimate(const DelayCommand& command) const = 0;
+    virtual u32 Estimate(const UpsampleCommand& command) const = 0;
+    virtual u32 Estimate(const DownMix6chTo2chCommand& command) const = 0;
+    virtual u32 Estimate(const AuxCommand& command) const = 0;
+    virtual u32 Estimate(const DeviceSinkCommand& command) const = 0;
+    virtual u32 Estimate(const CircularBufferSinkCommand& command) const = 0;
+    virtual u32 Estimate(const ReverbCommand& command) const = 0;
+    virtual u32 Estimate(const I3dl2ReverbCommand& command) const = 0;
+    virtual u32 Estimate(const PerformanceCommand& command) const = 0;
+    virtual u32 Estimate(const ClearMixBufferCommand& command) const = 0;
+    virtual u32 Estimate(const CopyMixBufferCommand& command) const = 0;
+    virtual u32 Estimate(const LightLimiterVersion1Command& command) const = 0;
+    virtual u32 Estimate(const LightLimiterVersion2Command& command) const = 0;
+    virtual u32 Estimate(const MultiTapBiquadFilterCommand& command) const = 0;
+    virtual u32 Estimate(const CaptureCommand& command) const = 0;
+    virtual u32 Estimate(const CompressorCommand& command) const = 0;
+};
+
+class CommandProcessingTimeEstimatorVersion1 final : public ICommandProcessingTimeEstimator {
+public:
+    CommandProcessingTimeEstimatorVersion1(u32 sample_count_, u32 buffer_count_)
+        : sample_count{sample_count_}, buffer_count{buffer_count_} {}
+
+    u32 Estimate(const PcmInt16DataSourceVersion1Command& command) const override;
+    u32 Estimate(const PcmInt16DataSourceVersion2Command& command) const override;
+    u32 Estimate(const PcmFloatDataSourceVersion1Command& command) const override;
+    u32 Estimate(const PcmFloatDataSourceVersion2Command& command) const override;
+    u32 Estimate(const AdpcmDataSourceVersion1Command& command) const override;
+    u32 Estimate(const AdpcmDataSourceVersion2Command& command) const override;
+    u32 Estimate(const VolumeCommand& command) const override;
+    u32 Estimate(const VolumeRampCommand& command) const override;
+    u32 Estimate(const BiquadFilterCommand& command) const override;
+    u32 Estimate(const MixCommand& command) const override;
+    u32 Estimate(const MixRampCommand& command) const override;
+    u32 Estimate(const MixRampGroupedCommand& command) const override;
+    u32 Estimate(const DepopPrepareCommand& command) const override;
+    u32 Estimate(const DepopForMixBuffersCommand& command) const override;
+    u32 Estimate(const DelayCommand& command) const override;
+    u32 Estimate(const UpsampleCommand& command) const override;
+    u32 Estimate(const DownMix6chTo2chCommand& command) const override;
+    u32 Estimate(const AuxCommand& command) const override;
+    u32 Estimate(const DeviceSinkCommand& command) const override;
+    u32 Estimate(const CircularBufferSinkCommand& command) const override;
+    u32 Estimate(const ReverbCommand& command) const override;
+    u32 Estimate(const I3dl2ReverbCommand& command) const override;
+    u32 Estimate(const PerformanceCommand& command) const override;
+    u32 Estimate(const ClearMixBufferCommand& command) const override;
+    u32 Estimate(const CopyMixBufferCommand& command) const override;
+    u32 Estimate(const LightLimiterVersion1Command& command) const override;
+    u32 Estimate(const LightLimiterVersion2Command& command) const override;
+    u32 Estimate(const MultiTapBiquadFilterCommand& command) const override;
+    u32 Estimate(const CaptureCommand& command) const override;
+    u32 Estimate(const CompressorCommand& command) const override;
+
+private:
+    u32 sample_count{};
+    u32 buffer_count{};
+};
+
+class CommandProcessingTimeEstimatorVersion2 final : public ICommandProcessingTimeEstimator {
+public:
+    CommandProcessingTimeEstimatorVersion2(u32 sample_count_, u32 buffer_count_)
+        : sample_count{sample_count_}, buffer_count{buffer_count_} {}
+
+    u32 Estimate(const PcmInt16DataSourceVersion1Command& command) const override;
+    u32 Estimate(const PcmInt16DataSourceVersion2Command& command) const override;
+    u32 Estimate(const PcmFloatDataSourceVersion1Command& command) const override;
+    u32 Estimate(const PcmFloatDataSourceVersion2Command& command) const override;
+    u32 Estimate(const AdpcmDataSourceVersion1Command& command) const override;
+    u32 Estimate(const AdpcmDataSourceVersion2Command& command) const override;
+    u32 Estimate(const VolumeCommand& command) const override;
+    u32 Estimate(const VolumeRampCommand& command) const override;
+    u32 Estimate(const BiquadFilterCommand& command) const override;
+    u32 Estimate(const MixCommand& command) const override;
+    u32 Estimate(const MixRampCommand& command) const override;
+    u32 Estimate(const MixRampGroupedCommand& command) const override;
+    u32 Estimate(const DepopPrepareCommand& command) const override;
+    u32 Estimate(const DepopForMixBuffersCommand& command) const override;
+    u32 Estimate(const DelayCommand& command) const override;
+    u32 Estimate(const UpsampleCommand& command) const override;
+    u32 Estimate(const DownMix6chTo2chCommand& command) const override;
+    u32 Estimate(const AuxCommand& command) const override;
+    u32 Estimate(const DeviceSinkCommand& command) const override;
+    u32 Estimate(const CircularBufferSinkCommand& command) const override;
+    u32 Estimate(const ReverbCommand& command) const override;
+    u32 Estimate(const I3dl2ReverbCommand& command) const override;
+    u32 Estimate(const PerformanceCommand& command) const override;
+    u32 Estimate(const ClearMixBufferCommand& command) const override;
+    u32 Estimate(const CopyMixBufferCommand& command) const override;
+    u32 Estimate(const LightLimiterVersion1Command& command) const override;
+    u32 Estimate(const LightLimiterVersion2Command& command) const override;
+    u32 Estimate(const MultiTapBiquadFilterCommand& command) const override;
+    u32 Estimate(const CaptureCommand& command) const override;
+    u32 Estimate(const CompressorCommand& command) const override;
+
+private:
+    u32 sample_count{};
+    u32 buffer_count{};
+};
+
+class CommandProcessingTimeEstimatorVersion3 final : public ICommandProcessingTimeEstimator {
+public:
+    CommandProcessingTimeEstimatorVersion3(u32 sample_count_, u32 buffer_count_)
+        : sample_count{sample_count_}, buffer_count{buffer_count_} {}
+
+    u32 Estimate(const PcmInt16DataSourceVersion1Command& command) const override;
+    u32 Estimate(const PcmInt16DataSourceVersion2Command& command) const override;
+    u32 Estimate(const PcmFloatDataSourceVersion1Command& command) const override;
+    u32 Estimate(const PcmFloatDataSourceVersion2Command& command) const override;
+    u32 Estimate(const AdpcmDataSourceVersion1Command& command) const override;
+    u32 Estimate(const AdpcmDataSourceVersion2Command& command) const override;
+    u32 Estimate(const VolumeCommand& command) const override;
+    u32 Estimate(const VolumeRampCommand& command) const override;
+    u32 Estimate(const BiquadFilterCommand& command) const override;
+    u32 Estimate(const MixCommand& command) const override;
+    u32 Estimate(const MixRampCommand& command) const override;
+    u32 Estimate(const MixRampGroupedCommand& command) const override;
+    u32 Estimate(const DepopPrepareCommand& command) const override;
+    u32 Estimate(const DepopForMixBuffersCommand& command) const override;
+    u32 Estimate(const DelayCommand& command) const override;
+    u32 Estimate(const UpsampleCommand& command) const override;
+    u32 Estimate(const DownMix6chTo2chCommand& command) const override;
+    u32 Estimate(const AuxCommand& command) const override;
+    u32 Estimate(const DeviceSinkCommand& command) const override;
+    u32 Estimate(const CircularBufferSinkCommand& command) const override;
+    u32 Estimate(const ReverbCommand& command) const override;
+    u32 Estimate(const I3dl2ReverbCommand& command) const override;
+    u32 Estimate(const PerformanceCommand& command) const override;
+    u32 Estimate(const ClearMixBufferCommand& command) const override;
+    u32 Estimate(const CopyMixBufferCommand& command) const override;
+    u32 Estimate(const LightLimiterVersion1Command& command) const override;
+    u32 Estimate(const LightLimiterVersion2Command& command) const override;
+    u32 Estimate(const MultiTapBiquadFilterCommand& command) const override;
+    u32 Estimate(const CaptureCommand& command) const override;
+    u32 Estimate(const CompressorCommand& command) const override;
+
+private:
+    u32 sample_count{};
+    u32 buffer_count{};
+};
+
+class CommandProcessingTimeEstimatorVersion4 final : public ICommandProcessingTimeEstimator {
+public:
+    CommandProcessingTimeEstimatorVersion4(u32 sample_count_, u32 buffer_count_)
+        : sample_count{sample_count_}, buffer_count{buffer_count_} {}
+
+    u32 Estimate(const PcmInt16DataSourceVersion1Command& command) const override;
+    u32 Estimate(const PcmInt16DataSourceVersion2Command& command) const override;
+    u32 Estimate(const PcmFloatDataSourceVersion1Command& command) const override;
+    u32 Estimate(const PcmFloatDataSourceVersion2Command& command) const override;
+    u32 Estimate(const AdpcmDataSourceVersion1Command& command) const override;
+    u32 Estimate(const AdpcmDataSourceVersion2Command& command) const override;
+    u32 Estimate(const VolumeCommand& command) const override;
+    u32 Estimate(const VolumeRampCommand& command) const override;
+    u32 Estimate(const BiquadFilterCommand& command) const override;
+    u32 Estimate(const MixCommand& command) const override;
+    u32 Estimate(const MixRampCommand& command) const override;
+    u32 Estimate(const MixRampGroupedCommand& command) const override;
+    u32 Estimate(const DepopPrepareCommand& command) const override;
+    u32 Estimate(const DepopForMixBuffersCommand& command) const override;
+    u32 Estimate(const DelayCommand& command) const override;
+    u32 Estimate(const UpsampleCommand& command) const override;
+    u32 Estimate(const DownMix6chTo2chCommand& command) const override;
+    u32 Estimate(const AuxCommand& command) const override;
+    u32 Estimate(const DeviceSinkCommand& command) const override;
+    u32 Estimate(const CircularBufferSinkCommand& command) const override;
+    u32 Estimate(const ReverbCommand& command) const override;
+    u32 Estimate(const I3dl2ReverbCommand& command) const override;
+    u32 Estimate(const PerformanceCommand& command) const override;
+    u32 Estimate(const ClearMixBufferCommand& command) const override;
+    u32 Estimate(const CopyMixBufferCommand& command) const override;
+    u32 Estimate(const LightLimiterVersion1Command& command) const override;
+    u32 Estimate(const LightLimiterVersion2Command& command) const override;
+    u32 Estimate(const MultiTapBiquadFilterCommand& command) const override;
+    u32 Estimate(const CaptureCommand& command) const override;
+    u32 Estimate(const CompressorCommand& command) const override;
+
+private:
+    u32 sample_count{};
+    u32 buffer_count{};
+};
+
+class CommandProcessingTimeEstimatorVersion5 final : public ICommandProcessingTimeEstimator {
+public:
+    CommandProcessingTimeEstimatorVersion5(u32 sample_count_, u32 buffer_count_)
+        : sample_count{sample_count_}, buffer_count{buffer_count_} {}
+
+    u32 Estimate(const PcmInt16DataSourceVersion1Command& command) const override;
+    u32 Estimate(const PcmInt16DataSourceVersion2Command& command) const override;
+    u32 Estimate(const PcmFloatDataSourceVersion1Command& command) const override;
+    u32 Estimate(const PcmFloatDataSourceVersion2Command& command) const override;
+    u32 Estimate(const AdpcmDataSourceVersion1Command& command) const override;
+    u32 Estimate(const AdpcmDataSourceVersion2Command& command) const override;
+    u32 Estimate(const VolumeCommand& command) const override;
+    u32 Estimate(const VolumeRampCommand& command) const override;
+    u32 Estimate(const BiquadFilterCommand& command) const override;
+    u32 Estimate(const MixCommand& command) const override;
+    u32 Estimate(const MixRampCommand& command) const override;
+    u32 Estimate(const MixRampGroupedCommand& command) const override;
+    u32 Estimate(const DepopPrepareCommand& command) const override;
+    u32 Estimate(const DepopForMixBuffersCommand& command) const override;
+    u32 Estimate(const DelayCommand& command) const override;
+    u32 Estimate(const UpsampleCommand& command) const override;
+    u32 Estimate(const DownMix6chTo2chCommand& command) const override;
+    u32 Estimate(const AuxCommand& command) const override;
+    u32 Estimate(const DeviceSinkCommand& command) const override;
+    u32 Estimate(const CircularBufferSinkCommand& command) const override;
+    u32 Estimate(const ReverbCommand& command) const override;
+    u32 Estimate(const I3dl2ReverbCommand& command) const override;
+    u32 Estimate(const PerformanceCommand& command) const override;
+    u32 Estimate(const ClearMixBufferCommand& command) const override;
+    u32 Estimate(const CopyMixBufferCommand& command) const override;
+    u32 Estimate(const LightLimiterVersion1Command& command) const override;
+    u32 Estimate(const LightLimiterVersion2Command& command) const override;
+    u32 Estimate(const MultiTapBiquadFilterCommand& command) const override;
+    u32 Estimate(const CaptureCommand& command) const override;
+    u32 Estimate(const CompressorCommand& command) const override;
+
+private:
+    u32 sample_count{};
+    u32 buffer_count{};
+};
+
+} // namespace AudioCore::AudioRenderer

src/audio_core/renderer/command/commands.h

@@ -0,0 +1,32 @@
+// SPDX-FileCopyrightText: Copyright 2022 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#include "audio_core/renderer/command/data_source/adpcm.h"
+#include "audio_core/renderer/command/data_source/pcm_float.h"
+#include "audio_core/renderer/command/data_source/pcm_int16.h"
+#include "audio_core/renderer/command/effect/aux_.h"
+#include "audio_core/renderer/command/effect/biquad_filter.h"
+#include "audio_core/renderer/command/effect/capture.h"
+#include "audio_core/renderer/command/effect/compressor.h"
+#include "audio_core/renderer/command/effect/delay.h"
+#include "audio_core/renderer/command/effect/i3dl2_reverb.h"
+#include "audio_core/renderer/command/effect/light_limiter.h"
+#include "audio_core/renderer/command/effect/multi_tap_biquad_filter.h"
+#include "audio_core/renderer/command/effect/reverb.h"
+#include "audio_core/renderer/command/icommand.h"
+#include "audio_core/renderer/command/mix/clear_mix.h"
+#include "audio_core/renderer/command/mix/copy_mix.h"
+#include "audio_core/renderer/command/mix/depop_for_mix_buffers.h"
+#include "audio_core/renderer/command/mix/depop_prepare.h"
+#include "audio_core/renderer/command/mix/mix.h"
+#include "audio_core/renderer/command/mix/mix_ramp.h"
+#include "audio_core/renderer/command/mix/mix_ramp_grouped.h"
+#include "audio_core/renderer/command/mix/volume.h"
+#include "audio_core/renderer/command/mix/volume_ramp.h"
+#include "audio_core/renderer/command/performance/performance.h"
+#include "audio_core/renderer/command/resample/downmix_6ch_to_2ch.h"
+#include "audio_core/renderer/command/resample/upsample.h"
+#include "audio_core/renderer/command/sink/circular_buffer.h"
+#include "audio_core/renderer/command/sink/device.h"

src/audio_core/renderer/command/data_source/adpcm.cpp

@@ -0,0 +1,84 @@
+// SPDX-FileCopyrightText: Copyright 2022 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include <span>
+
+#include "audio_core/renderer/adsp/command_list_processor.h"
+#include "audio_core/renderer/command/data_source/adpcm.h"
+#include "audio_core/renderer/command/data_source/decode.h"
+
+namespace AudioCore::AudioRenderer {
+
+void AdpcmDataSourceVersion1Command::Dump(const ADSP::CommandListProcessor& processor,
+                                          std::string& string) {
+    string += fmt::format("AdpcmDataSourceVersion1Command\n\toutput_index {:02X} source sample "
+                          "rate {} target sample rate {} src quality {}\n",
+                          output_index, sample_rate, processor.target_sample_rate, src_quality);
+}
+
+void AdpcmDataSourceVersion1Command::Process(const ADSP::CommandListProcessor& processor) {
+    auto out_buffer{processor.mix_buffers.subspan(output_index * processor.sample_count,
+                                                  processor.sample_count)};
+
+    DecodeFromWaveBuffersArgs args{
+        .sample_format{SampleFormat::Adpcm},
+        .output{out_buffer},
+        .voice_state{reinterpret_cast<VoiceState*>(voice_state)},
+        .wave_buffers{wave_buffers},
+        .channel{0},
+        .channel_count{1},
+        .src_quality{src_quality},
+        .pitch{pitch},
+        .source_sample_rate{sample_rate},
+        .target_sample_rate{processor.target_sample_rate},
+        .sample_count{processor.sample_count},
+        .data_address{data_address},
+        .data_size{data_size},
+        .IsVoicePlayedSampleCountResetAtLoopPointSupported{(flags & 1) != 0},
+        .IsVoicePitchAndSrcSkippedSupported{(flags & 2) != 0},
+    };
+
+    DecodeFromWaveBuffers(*processor.memory, args);
+}
+
+bool AdpcmDataSourceVersion1Command::Verify(const ADSP::CommandListProcessor& processor) {
+    return true;
+}
+
+void AdpcmDataSourceVersion2Command::Dump(const ADSP::CommandListProcessor& processor,
+                                          std::string& string) {
+    string += fmt::format("AdpcmDataSourceVersion2Command\n\toutput_index {:02X} source sample "
+                          "rate {} target sample rate {} src quality {}\n",
+                          output_index, sample_rate, processor.target_sample_rate, src_quality);
+}
+
+void AdpcmDataSourceVersion2Command::Process(const ADSP::CommandListProcessor& processor) {
+    auto out_buffer{processor.mix_buffers.subspan(output_index * processor.sample_count,
+                                                  processor.sample_count)};
+
+    DecodeFromWaveBuffersArgs args{
+        .sample_format{SampleFormat::Adpcm},
+        .output{out_buffer},
+        .voice_state{reinterpret_cast<VoiceState*>(voice_state)},
+        .wave_buffers{wave_buffers},
+        .channel{0},
+        .channel_count{1},
+        .src_quality{src_quality},
+        .pitch{pitch},
+        .source_sample_rate{sample_rate},
+        .target_sample_rate{processor.target_sample_rate},
+        .sample_count{processor.sample_count},
+        .data_address{data_address},
+        .data_size{data_size},
+        .IsVoicePlayedSampleCountResetAtLoopPointSupported{(flags & 1) != 0},
+        .IsVoicePitchAndSrcSkippedSupported{(flags & 2) != 0},
+    };
+
+    DecodeFromWaveBuffers(*processor.memory, args);
+}
+
+bool AdpcmDataSourceVersion2Command::Verify(const ADSP::CommandListProcessor& processor) {
+    return true;
+}
+
+} // namespace AudioCore::AudioRenderer

src/audio_core/renderer/command/data_source/adpcm.h

@@ -0,0 +1,119 @@
+// SPDX-FileCopyrightText: Copyright 2022 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#include <array>
+#include <string>
+
+#include "audio_core/common/common.h"
+#include "audio_core/common/wave_buffer.h"
+#include "audio_core/renderer/command/icommand.h"
+#include "common/common_types.h"
+
+namespace AudioCore::AudioRenderer {
+namespace ADSP {
+class CommandListProcessor;
+}
+
+/**
+ * AudioRenderer command to decode ADPCM-encoded version 1 wavebuffers
+ * into the output_index mix buffer.
+ */
+struct AdpcmDataSourceVersion1Command : ICommand {
+    /**
+     * Print this command's information to a string.
+     *
+     * @param processor - The CommandListProcessor processing this command.
+     * @param string    - The string to print into.
+     */
+    void Dump(const ADSP::CommandListProcessor& processor, std::string& string) override;
+
+    /**
+     * Process this command.
+     *
+     * @param processor - The CommandListProcessor processing this command.
+     */
+    void Process(const ADSP::CommandListProcessor& processor) override;
+
+    /**
+     * Verify this command's data is valid.
+     *
+     * @param processor - The CommandListProcessor processing this command.
+     * @return True if the command is valid, otherwise false.
+     */
+    bool Verify(const ADSP::CommandListProcessor& processor) override;
+
+    /// Quality used for sample rate conversion
+    SrcQuality src_quality;
+    /// Mix buffer index for decoded samples
+    s16 output_index;
+    /// Flags to control decoding (see AudioCore::AudioRenderer::VoiceInfo::Flags)
+    u16 flags;
+    /// Wavebuffer sample rate
+    u32 sample_rate;
+    /// Pitch used for sample rate conversion
+    f32 pitch;
+    /// Wavebuffers containing the wavebuffer address, context address, looping information etc
+    std::array<WaveBufferVersion2, MaxWaveBuffers> wave_buffers;
+    /// Voice state, updated each call and written back to game
+    CpuAddr voice_state;
+    /// Coefficients data address
+    CpuAddr data_address;
+    /// Coefficients data size
+    u64 data_size;
+};
+
+/**
+ * AudioRenderer command to decode ADPCM-encoded version 2 wavebuffers
+ * into the output_index mix buffer.
+ */
+struct AdpcmDataSourceVersion2Command : ICommand {
+    /**
+     * Print this command's information to a string.
+     *
+     * @param processor - The CommandListProcessor processing this command.
+     * @param string    - The string to print into.
+     */
+    void Dump(const ADSP::CommandListProcessor& processor, std::string& string) override;
+
+    /**
+     * Process this command.
+     *
+     * @param processor - The CommandListProcessor processing this command.
+     */
+    void Process(const ADSP::CommandListProcessor& processor) override;
+
+    /**
+     * Verify this command's data is valid.
+     *
+     * @param processor - The CommandListProcessor processing this command.
+     * @return True if the command is valid, otherwise false.
+     */
+    bool Verify(const ADSP::CommandListProcessor& processor) override;
+
+    /// Quality used for sample rate conversion
+    SrcQuality src_quality;
+    /// Mix buffer index for decoded samples
+    s16 output_index;
+    /// Flags to control decoding (see AudioCore::AudioRenderer::VoiceInfo::Flags)
+    u16 flags;
+    /// Wavebuffer sample rate
+    u32 sample_rate;
+    /// Pitch used for sample rate conversion
+    f32 pitch;
+    /// Target channel to read within the wavebuffer
+    s8 channel_index;
+    /// Number of channels within the wavebuffer
+    s8 channel_count;
+    /// Wavebuffers containing the wavebuffer address, context address, looping information etc
+    std::array<WaveBufferVersion2, MaxWaveBuffers> wave_buffers;
+    /// Voice state, updated each call and written back to game
+    CpuAddr voice_state;
+    /// Coefficients data address
+    CpuAddr data_address;
+    /// Coefficients data size
+    u64 data_size;
+};
+
+} // namespace AudioCore::AudioRenderer

src/audio_core/renderer/command/data_source/decode.cpp

@@ -0,0 +1,428 @@
+// SPDX-FileCopyrightText: Copyright 2022 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include <array>
+#include <vector>
+
+#include "audio_core/renderer/command/data_source/decode.h"
+#include "audio_core/renderer/command/resample/resample.h"
+#include "common/fixed_point.h"
+#include "common/logging/log.h"
+#include "core/memory.h"
+
+namespace AudioCore::AudioRenderer {
+
+constexpr u32 TempBufferSize = 0x3F00;
+constexpr std::array<u8, 3> PitchBySrcQuality = {4, 8, 4};
+
+/**
+ * Decode PCM data. Only s16 or f32 is supported.
+ *
+ * @tparam T         - Type to decode. Only s16 and f32 are supported.
+ * @param memory     - Core memory for reading samples.
+ * @param out_buffer - Output mix buffer to receive the samples.
+ * @param req        - Information for how to decode.
+ * @return Number of samples decoded.
+ */
+template <typename T>
+static u32 DecodePcm(Core::Memory::Memory& memory, std::span<s16> out_buffer,
+                     const DecodeArg& req) {
+    constexpr s32 min{std::numeric_limits<s16>::min()};
+    constexpr s32 max{std::numeric_limits<s16>::max()};
+
+    if (req.buffer == 0 || req.buffer_size == 0) {
+        return 0;
+    }
+
+    if (req.start_offset >= req.end_offset) {
+        return 0;
+    }
+
+    auto samples_to_decode{
+        std::min(req.samples_to_read, req.end_offset - req.start_offset - req.offset)};
+    u32 channel_count{static_cast<u32>(req.channel_count)};
+
+    switch (req.channel_count) {
+    default: {
+        const VAddr source{req.buffer +
+                           (((req.start_offset + req.offset) * channel_count) * sizeof(T))};
+        const u64 size{channel_count * samples_to_decode};
+        const u64 size_bytes{size * sizeof(T)};
+
+        std::vector<T> samples(size);
+        memory.ReadBlockUnsafe(source, samples.data(), size_bytes);
+
+        if constexpr (std::is_floating_point_v<T>) {
+            for (u32 i = 0; i < samples_to_decode; i++) {
+                auto sample{static_cast<s32>(samples[i * channel_count + req.target_channel] *
+                                             std::numeric_limits<s16>::max())};
+                out_buffer[i] = static_cast<s16>(std::clamp(sample, min, max));
+            }
+        } else {
+            for (u32 i = 0; i < samples_to_decode; i++) {
+                out_buffer[i] = samples[i * channel_count + req.target_channel];
+            }
+        }
+    } break;
+
+    case 1:
+        if (req.target_channel != 0) {
+            LOG_ERROR(Service_Audio, "Invalid target channel, expected 0, got {}",
+                      req.target_channel);
+            return 0;
+        }
+
+        const VAddr source{req.buffer + ((req.start_offset + req.offset) * sizeof(T))};
+        std::vector<T> samples(samples_to_decode);
+        memory.ReadBlockUnsafe(source, samples.data(), samples_to_decode * sizeof(T));
+
+        if constexpr (std::is_floating_point_v<T>) {
+            for (u32 i = 0; i < samples_to_decode; i++) {
+                auto sample{static_cast<s32>(samples[i * channel_count + req.target_channel] *
+                                             std::numeric_limits<s16>::max())};
+                out_buffer[i] = static_cast<s16>(std::clamp(sample, min, max));
+            }
+        } else {
+            std::memcpy(out_buffer.data(), samples.data(), samples_to_decode * sizeof(s16));
+        }
+        break;
+    }
+
+    return samples_to_decode;
+}
+
+/**
+ * Decode ADPCM data.
+ *
+ * @param memory     - Core memory for reading samples.
+ * @param out_buffer - Output mix buffer to receive the samples.
+ * @param req        - Information for how to decode.
+ * @return Number of samples decoded.
+ */
+static u32 DecodeAdpcm(Core::Memory::Memory& memory, std::span<s16> out_buffer,
+                       const DecodeArg& req) {
+    constexpr u32 SamplesPerFrame{14};
+    constexpr u32 NibblesPerFrame{16};
+
+    if (req.buffer == 0 || req.buffer_size == 0) {
+        return 0;
+    }
+
+    if (req.end_offset < req.start_offset) {
+        return 0;
+    }
+
+    auto end{(req.end_offset % SamplesPerFrame) +
+             NibblesPerFrame * (req.end_offset / SamplesPerFrame)};
+    if (req.end_offset % SamplesPerFrame) {
+        end += 3;
+    } else {
+        end += 1;
+    }
+
+    if (req.buffer_size < end / 2) {
+        return 0;
+    }
+
+    auto samples_to_process{
+        std::min(req.end_offset - req.start_offset - req.offset, req.samples_to_read)};
+
+    auto samples_to_read{samples_to_process};
+    auto start_pos{req.start_offset + req.offset};
+    auto samples_remaining_in_frame{start_pos % SamplesPerFrame};
+    auto position_in_frame{(start_pos / SamplesPerFrame) * NibblesPerFrame +
+                           samples_remaining_in_frame};
+
+    if (samples_remaining_in_frame) {
+        position_in_frame += 2;
+    }
+
+    const auto size{std::max((samples_to_process / 8U) * SamplesPerFrame, 8U)};
+    std::vector<u8> wavebuffer(size);
+    memory.ReadBlockUnsafe(req.buffer + position_in_frame / 2, wavebuffer.data(),
+                           wavebuffer.size());
+
+    auto context{req.adpcm_context};
+    auto header{context->header};
+    u8 coeff_index{static_cast<u8>((header >> 4U) & 0xFU)};
+    u8 scale{static_cast<u8>(header & 0xFU)};
+    s32 coeff0{req.coefficients[coeff_index * 2 + 0]};
+    s32 coeff1{req.coefficients[coeff_index * 2 + 1]};
+
+    auto yn0{context->yn0};
+    auto yn1{context->yn1};
+
+    static constexpr std::array<s32, 16> Steps{
+        0, 1, 2, 3, 4, 5, 6, 7, -8, -7, -6, -5, -4, -3, -2, -1,
+    };
+
+    const auto decode_sample = [&](const s32 code) -> s16 {
+        const auto xn = code * (1 << scale);
+        const auto prediction = coeff0 * yn0 + coeff1 * yn1;
+        const auto sample = ((xn << 11) + 0x400 + prediction) >> 11;
+        const auto saturated = std::clamp<s32>(sample, -0x8000, 0x7FFF);
+        yn1 = yn0;
+        yn0 = static_cast<s16>(saturated);
+        return yn0;
+    };
+
+    u32 read_index{0};
+    u32 write_index{0};
+
+    while (samples_to_read > 0) {
+        // Are we at a new frame?
+        if ((position_in_frame % NibblesPerFrame) == 0) {
+            header = wavebuffer[read_index++];
+            coeff_index = (header >> 4) & 0xF;
+            scale = header & 0xF;
+            coeff0 = req.coefficients[coeff_index * 2 + 0];
+            coeff1 = req.coefficients[coeff_index * 2 + 1];
+            position_in_frame += 2;
+
+            // Can we consume all of this frame's samples?
+            if (samples_to_read >= SamplesPerFrame) {
+                // Can grab all samples until the next header
+                for (u32 i = 0; i < SamplesPerFrame / 2; i++) {
+                    auto code0{Steps[(wavebuffer[read_index] >> 4) & 0xF]};
+                    auto code1{Steps[wavebuffer[read_index] & 0xF]};
+                    read_index++;
+
+                    out_buffer[write_index++] = decode_sample(code0);
+                    out_buffer[write_index++] = decode_sample(code1);
+                }
+
+                position_in_frame += SamplesPerFrame;
+                samples_to_read -= SamplesPerFrame;
+                continue;
+            }
+        }
+
+        // Decode a single sample
+        auto code{wavebuffer[read_index]};
+        if (position_in_frame & 1) {
+            code &= 0xF;
+            read_index++;
+        } else {
+            code >>= 4;
+        }
+
+        out_buffer[write_index++] = decode_sample(Steps[code]);
+
+        position_in_frame++;
+        samples_to_read--;
+    }
+
+    context->header = header;
+    context->yn0 = yn0;
+    context->yn1 = yn1;
+
+    return samples_to_process;
+}
+
+/**
+ * Decode implementation.
+ * Decode wavebuffers according to the given args.
+ *
+ * @param memory - Core memory to read data from.
+ * @param args   - The wavebuffer data, and information for how to decode it.
+ */
+void DecodeFromWaveBuffers(Core::Memory::Memory& memory, const DecodeFromWaveBuffersArgs& args) {
+    auto& voice_state{*args.voice_state};
+    auto remaining_sample_count{args.sample_count};
+    auto fraction{voice_state.fraction};
+
+    const auto sample_rate_ratio{
+        (Common::FixedPoint<49, 15>(args.source_sample_rate) / args.target_sample_rate) *
+        args.pitch};
+    const auto size_required{fraction + remaining_sample_count * sample_rate_ratio};
+
+    if (size_required < 0) {
+        return;
+    }
+
+    auto pitch{PitchBySrcQuality[static_cast<u32>(args.src_quality)]};
+    if (static_cast<u32>(pitch + size_required.to_int_floor()) > TempBufferSize) {
+        return;
+    }
+
+    auto max_remaining_sample_count{
+        ((Common::FixedPoint<17, 15>(TempBufferSize) - fraction) / sample_rate_ratio)
+            .to_uint_floor()};
+    max_remaining_sample_count = std::min(max_remaining_sample_count, remaining_sample_count);
+
+    auto wavebuffers_consumed{voice_state.wave_buffers_consumed};
+    auto wavebuffer_index{voice_state.wave_buffer_index};
+    auto played_sample_count{voice_state.played_sample_count};
+
+    bool is_buffer_starved{false};
+    u32 offset{voice_state.offset};
+
+    auto output_buffer{args.output};
+    std::vector<s16> temp_buffer(TempBufferSize, 0);
+
+    while (remaining_sample_count > 0) {
+        const auto samples_to_write{std::min(remaining_sample_count, max_remaining_sample_count)};
+        const auto samples_to_read{
+            (fraction + samples_to_write * sample_rate_ratio).to_uint_floor()};
+
+        u32 temp_buffer_pos{0};
+
+        if (!args.IsVoicePitchAndSrcSkippedSupported) {
+            for (u32 i = 0; i < pitch; i++) {
+                temp_buffer[i] = voice_state.sample_history[i];
+            }
+            temp_buffer_pos = pitch;
+        }
+
+        u32 samples_read{0};
+        while (samples_read < samples_to_read) {
+            if (wavebuffer_index >= MaxWaveBuffers) {
+                LOG_ERROR(Service_Audio, "Invalid wavebuffer index! {}", wavebuffer_index);
+                wavebuffer_index = 0;
+                voice_state.wave_buffer_valid.fill(false);
+                wavebuffers_consumed = MaxWaveBuffers;
+            }
+
+            if (!voice_state.wave_buffer_valid[wavebuffer_index]) {
+                is_buffer_starved = true;
+                break;
+            }
+
+            auto& wavebuffer{args.wave_buffers[wavebuffer_index]};
+
+            if (offset == 0 && args.sample_format == SampleFormat::Adpcm &&
+                wavebuffer.context != 0) {
+                memory.ReadBlockUnsafe(wavebuffer.context, &voice_state.adpcm_context,
+                                       wavebuffer.context_size);
+            }
+
+            auto start_offset{wavebuffer.start_offset};
+            auto end_offset{wavebuffer.end_offset};
+
+            if (wavebuffer.loop && voice_state.loop_count > 0 &&
+                wavebuffer.loop_start_offset != 0 && wavebuffer.loop_end_offset != 0 &&
+                wavebuffer.loop_start_offset <= wavebuffer.loop_end_offset) {
+                start_offset = wavebuffer.loop_start_offset;
+                end_offset = wavebuffer.loop_end_offset;
+            }
+
+            DecodeArg decode_arg{.buffer{wavebuffer.buffer},
+                                 .buffer_size{wavebuffer.buffer_size},
+                                 .start_offset{start_offset},
+                                 .end_offset{end_offset},
+                                 .channel_count{args.channel_count},
+                                 .coefficients{},
+                                 .adpcm_context{nullptr},
+                                 .target_channel{args.channel},
+                                 .offset{offset},
+                                 .samples_to_read{samples_to_read - samples_read}};
+
+            s32 samples_decoded{0};
+
+            switch (args.sample_format) {
+            case SampleFormat::PcmInt16:
+                samples_decoded = DecodePcm<s16>(
+                    memory, {&temp_buffer[temp_buffer_pos], TempBufferSize - temp_buffer_pos},
+                    decode_arg);
+                break;
+
+            case SampleFormat::PcmFloat:
+                samples_decoded = DecodePcm<f32>(
+                    memory, {&temp_buffer[temp_buffer_pos], TempBufferSize - temp_buffer_pos},
+                    decode_arg);
+                break;
+
+            case SampleFormat::Adpcm: {
+                decode_arg.adpcm_context = &voice_state.adpcm_context;
+                memory.ReadBlockUnsafe(args.data_address, &decode_arg.coefficients, args.data_size);
+                samples_decoded = DecodeAdpcm(
+                    memory, {&temp_buffer[temp_buffer_pos], TempBufferSize - temp_buffer_pos},
+                    decode_arg);
+            } break;
+
+            default:
+                LOG_ERROR(Service_Audio, "Invalid sample format to decode {}",
+                          static_cast<u32>(args.sample_format));
+                samples_decoded = 0;
+                break;
+            }
+
+            played_sample_count += samples_decoded;
+            samples_read += samples_decoded;
+            temp_buffer_pos += samples_decoded;
+            offset += samples_decoded;
+
+            if (samples_decoded == 0 || offset >= end_offset - start_offset) {
+                offset = 0;
+                if (!wavebuffer.loop) {
+                    voice_state.wave_buffer_valid[wavebuffer_index] = false;
+                    voice_state.loop_count = 0;
+
+                    if (wavebuffer.stream_ended) {
+                        played_sample_count = 0;
+                    }
+
+                    wavebuffer_index = (wavebuffer_index + 1) % MaxWaveBuffers;
+                    wavebuffers_consumed++;
+                } else {
+                    voice_state.loop_count++;
+                    if (wavebuffer.loop_count > 0 &&
+                        (voice_state.loop_count > wavebuffer.loop_count || samples_decoded == 0)) {
+                        voice_state.wave_buffer_valid[wavebuffer_index] = false;
+                        voice_state.loop_count = 0;
+
+                        if (wavebuffer.stream_ended) {
+                            played_sample_count = 0;
+                        }
+
+                        wavebuffer_index = (wavebuffer_index + 1) % MaxWaveBuffers;
+                        wavebuffers_consumed++;
+                    }
+
+                    if (samples_decoded == 0) {
+                        is_buffer_starved = true;
+                        break;
+                    }
+
+                    if (args.IsVoicePlayedSampleCountResetAtLoopPointSupported) {
+                        played_sample_count = 0;
+                    }
+                }
+            }
+        }
+
+        if (args.IsVoicePitchAndSrcSkippedSupported) {
+            if (samples_read > output_buffer.size()) {
+                LOG_ERROR(Service_Audio, "Attempting to write past the end of output buffer!");
+            }
+            for (u32 i = 0; i < samples_read; i++) {
+                output_buffer[i] = temp_buffer[i];
+            }
+        } else {
+            std::memset(&temp_buffer[temp_buffer_pos], 0,
+                        (samples_to_read - samples_read) * sizeof(s16));
+
+            Resample(output_buffer, temp_buffer, sample_rate_ratio, fraction, samples_to_write,
+                     args.src_quality);
+
+            std::memcpy(voice_state.sample_history.data(), &temp_buffer[samples_to_read],
+                        pitch * sizeof(s16));
+        }
+
+        remaining_sample_count -= samples_to_write;
+        if (remaining_sample_count != 0 && is_buffer_starved) {
+            LOG_ERROR(Service_Audio, "Samples remaining but buffer is starving??");
+            break;
+        }
+
+        output_buffer = output_buffer.subspan(samples_to_write);
+    }
+
+    voice_state.wave_buffers_consumed = wavebuffers_consumed;
+    voice_state.played_sample_count = played_sample_count;
+    voice_state.wave_buffer_index = wavebuffer_index;
+    voice_state.offset = offset;
+    voice_state.fraction = fraction;
+}
+
+} // namespace AudioCore::AudioRenderer

src/audio_core/renderer/command/data_source/decode.h

@@ -0,0 +1,59 @@
+// SPDX-FileCopyrightText: Copyright 2022 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#include <array>
+#include <span>
+
+#include "audio_core/common/common.h"
+#include "audio_core/common/wave_buffer.h"
+#include "audio_core/renderer/voice/voice_state.h"
+#include "common/common_types.h"
+
+namespace Core::Memory {
+class Memory;
+}
+
+namespace AudioCore::AudioRenderer {
+
+struct DecodeFromWaveBuffersArgs {
+    SampleFormat sample_format;
+    std::span<s32> output;
+    VoiceState* voice_state;
+    std::span<WaveBufferVersion2> wave_buffers;
+    s8 channel;
+    s8 channel_count;
+    SrcQuality src_quality;
+    f32 pitch;
+    u32 source_sample_rate;
+    u32 target_sample_rate;
+    u32 sample_count;
+    CpuAddr data_address;
+    u64 data_size;
+    bool IsVoicePlayedSampleCountResetAtLoopPointSupported;
+    bool IsVoicePitchAndSrcSkippedSupported;
+};
+
+struct DecodeArg {
+    CpuAddr buffer;
+    u64 buffer_size;
+    u32 start_offset;
+    u32 end_offset;
+    s8 channel_count;
+    std::array<s16, 16> coefficients;
+    VoiceState::AdpcmContext* adpcm_context;
+    s8 target_channel;
+    u32 offset;
+    u32 samples_to_read;
+};
+
+/**
+ * Decode wavebuffers according to the given args.
+ *
+ * @param memory - Core memory to read data from.
+ * @param args - The wavebuffer data, and information for how to decode it.
+ */
+void DecodeFromWaveBuffers(Core::Memory::Memory& memory, const DecodeFromWaveBuffersArgs& args);
+
+} // namespace AudioCore::AudioRenderer

src/audio_core/renderer/command/data_source/pcm_float.cpp

@@ -0,0 +1,86 @@
+// SPDX-FileCopyrightText: Copyright 2022 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include "audio_core/renderer/adsp/command_list_processor.h"
+#include "audio_core/renderer/command/data_source/decode.h"
+#include "audio_core/renderer/command/data_source/pcm_float.h"
+
+namespace AudioCore::AudioRenderer {
+
+void PcmFloatDataSourceVersion1Command::Dump(const ADSP::CommandListProcessor& processor,
+                                             std::string& string) {
+    string +=
+        fmt::format("PcmFloatDataSourceVersion1Command\n\toutput_index {:02X} channel {} "
+                    "channel count {} source sample rate {} target sample rate {} src quality {}\n",
+                    output_index, channel_index, channel_count, sample_rate,
+                    processor.target_sample_rate, src_quality);
+}
+
+void PcmFloatDataSourceVersion1Command::Process(const ADSP::CommandListProcessor& processor) {
+    auto out_buffer = processor.mix_buffers.subspan(output_index * processor.sample_count,
+                                                    processor.sample_count);
+
+    DecodeFromWaveBuffersArgs args{
+        .sample_format{SampleFormat::PcmFloat},
+        .output{out_buffer},
+        .voice_state{reinterpret_cast<VoiceState*>(voice_state)},
+        .wave_buffers{wave_buffers},
+        .channel{channel_index},
+        .channel_count{channel_count},
+        .src_quality{src_quality},
+        .pitch{pitch},
+        .source_sample_rate{sample_rate},
+        .target_sample_rate{processor.target_sample_rate},
+        .sample_count{processor.sample_count},
+        .data_address{0},
+        .data_size{0},
+        .IsVoicePlayedSampleCountResetAtLoopPointSupported{(flags & 1) != 0},
+        .IsVoicePitchAndSrcSkippedSupported{(flags & 2) != 0},
+    };
+
+    DecodeFromWaveBuffers(*processor.memory, args);
+}
+
+bool PcmFloatDataSourceVersion1Command::Verify(const ADSP::CommandListProcessor& processor) {
+    return true;
+}
+
+void PcmFloatDataSourceVersion2Command::Dump(const ADSP::CommandListProcessor& processor,
+                                             std::string& string) {
+    string +=
+        fmt::format("PcmFloatDataSourceVersion2Command\n\toutput_index {:02X} channel {} "
+                    "channel count {} source sample rate {} target sample rate {} src quality {}\n",
+                    output_index, channel_index, channel_count, sample_rate,
+                    processor.target_sample_rate, src_quality);
+}
+
+void PcmFloatDataSourceVersion2Command::Process(const ADSP::CommandListProcessor& processor) {
+    auto out_buffer = processor.mix_buffers.subspan(output_index * processor.sample_count,
+                                                    processor.sample_count);
+
+    DecodeFromWaveBuffersArgs args{
+        .sample_format{SampleFormat::PcmFloat},
+        .output{out_buffer},
+        .voice_state{reinterpret_cast<VoiceState*>(voice_state)},
+        .wave_buffers{wave_buffers},
+        .channel{channel_index},
+        .channel_count{channel_count},
+        .src_quality{src_quality},
+        .pitch{pitch},
+        .source_sample_rate{sample_rate},
+        .target_sample_rate{processor.target_sample_rate},
+        .sample_count{processor.sample_count},
+        .data_address{0},
+        .data_size{0},
+        .IsVoicePlayedSampleCountResetAtLoopPointSupported{(flags & 1) != 0},
+        .IsVoicePitchAndSrcSkippedSupported{(flags & 2) != 0},
+    };
+
+    DecodeFromWaveBuffers(*processor.memory, args);
+}
+
+bool PcmFloatDataSourceVersion2Command::Verify(const ADSP::CommandListProcessor& processor) {
+    return true;
+}
+
+} // namespace AudioCore::AudioRenderer

src/audio_core/renderer/command/data_source/pcm_float.h

@@ -0,0 +1,113 @@
+// SPDX-FileCopyrightText: Copyright 2022 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#include <string>
+
+#include "audio_core/common/wave_buffer.h"
+#include "audio_core/renderer/command/icommand.h"
+#include "common/common_types.h"
+
+namespace AudioCore::AudioRenderer {
+namespace ADSP {
+class CommandListProcessor;
+}
+
+/**
+ * AudioRenderer command to decode PCM float-encoded version 1 wavebuffers
+ * into the output_index mix buffer.
+ */
+struct PcmFloatDataSourceVersion1Command : ICommand {
+    /**
+     * Print this command's information to a string.
+     *
+     * @param processor - The CommandListProcessor processing this command.
+     * @param string    - The string to print into.
+     */
+    void Dump(const ADSP::CommandListProcessor& processor, std::string& string) override;
+
+    /**
+     * Process this command.
+     *
+     * @param processor - The CommandListProcessor processing this command.
+     */
+    void Process(const ADSP::CommandListProcessor& processor) override;
+
+    /**
+     * Verify this command's data is valid.
+     *
+     * @param processor - The CommandListProcessor processing this command.
+     * @return True if the command is valid, otherwise false.
+     */
+    bool Verify(const ADSP::CommandListProcessor& processor) override;
+
+    /// Quality used for sample rate conversion
+    SrcQuality src_quality;
+    /// Mix buffer index for decoded samples
+    s16 output_index;
+    /// Flags to control decoding (see AudioCore::AudioRenderer::VoiceInfo::Flags)
+    u16 flags;
+    /// Wavebuffer sample rate
+    u32 sample_rate;
+    /// Pitch used for sample rate conversion
+    f32 pitch;
+    /// Target channel to read within the wavebuffer
+    s8 channel_index;
+    /// Number of channels within the wavebuffer
+    s8 channel_count;
+    /// Wavebuffers containing the wavebuffer address, context address, looping information etc
+    std::array<WaveBufferVersion2, MaxWaveBuffers> wave_buffers;
+    /// Voice state, updated each call and written back to game
+    CpuAddr voice_state;
+};
+
+/**
+ * AudioRenderer command to decode PCM float-encoded version 2 wavebuffers
+ * into the output_index mix buffer.
+ */
+struct PcmFloatDataSourceVersion2Command : ICommand {
+    /**
+     * Print this command's information to a string.
+     *
+     * @param processor - The CommandListProcessor processing this command.
+     * @param string    - The string to print into.
+     */
+    void Dump(const ADSP::CommandListProcessor& processor, std::string& string) override;
+
+    /**
+     * Process this command.
+     *
+     * @param processor - The CommandListProcessor processing this command.
+     */
+    void Process(const ADSP::CommandListProcessor& processor) override;
+
+    /**
+     * Verify this command's data is valid.
+     *
+     * @param processor - The CommandListProcessor processing this command.
+     * @return True if the command is valid, otherwise false.
+     */
+    bool Verify(const ADSP::CommandListProcessor& processor) override;
+
+    /// Quality used for sample rate conversion
+    SrcQuality src_quality;
+    /// Mix buffer index for decoded samples
+    s16 output_index;
+    /// Flags to control decoding (see AudioCore::AudioRenderer::VoiceInfo::Flags)
+    u16 flags;
+    /// Wavebuffer sample rate
+    u32 sample_rate;
+    /// Pitch used for sample rate conversion
+    f32 pitch;
+    /// Target channel to read within the wavebuffer
+    s8 channel_index;
+    /// Number of channels within the wavebuffer
+    s8 channel_count;
+    /// Wavebuffers containing the wavebuffer address, context address, looping information etc
+    std::array<WaveBufferVersion2, MaxWaveBuffers> wave_buffers;
+    /// Voice state, updated each call and written back to game
+    CpuAddr voice_state;
+};
+
+} // namespace AudioCore::AudioRenderer

src/audio_core/renderer/command/data_source/pcm_int16.cpp

@@ -0,0 +1,87 @@
+// SPDX-FileCopyrightText: Copyright 2022 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include <span>
+
+#include "audio_core/renderer/adsp/command_list_processor.h"
+#include "audio_core/renderer/command/data_source/decode.h"
+#include "audio_core/renderer/command/data_source/pcm_int16.h"
+
+namespace AudioCore::AudioRenderer {
+
+void PcmInt16DataSourceVersion1Command::Dump(const ADSP::CommandListProcessor& processor,
+                                             std::string& string) {
+    string +=
+        fmt::format("PcmInt16DataSourceVersion1Command\n\toutput_index {:02X} channel {} "
+                    "channel count {} source sample rate {} target sample rate {} src quality {}\n",
+                    output_index, channel_index, channel_count, sample_rate,
+                    processor.target_sample_rate, src_quality);
+}
+
+void PcmInt16DataSourceVersion1Command::Process(const ADSP::CommandListProcessor& processor) {
+    auto out_buffer = processor.mix_buffers.subspan(output_index * processor.sample_count,
+                                                    processor.sample_count);
+
+    DecodeFromWaveBuffersArgs args{
+        .sample_format{SampleFormat::PcmInt16},
+        .output{out_buffer},
+        .voice_state{reinterpret_cast<VoiceState*>(voice_state)},
+        .wave_buffers{wave_buffers},
+        .channel{channel_index},
+        .channel_count{channel_count},
+        .src_quality{src_quality},
+        .pitch{pitch},
+        .source_sample_rate{sample_rate},
+        .target_sample_rate{processor.target_sample_rate},
+        .sample_count{processor.sample_count},
+        .data_address{0},
+        .data_size{0},
+        .IsVoicePlayedSampleCountResetAtLoopPointSupported{(flags & 1) != 0},
+        .IsVoicePitchAndSrcSkippedSupported{(flags & 2) != 0},
+    };
+
+    DecodeFromWaveBuffers(*processor.memory, args);
+}
+
+bool PcmInt16DataSourceVersion1Command::Verify(const ADSP::CommandListProcessor& processor) {
+    return true;
+}
+
+void PcmInt16DataSourceVersion2Command::Dump(const ADSP::CommandListProcessor& processor,
+                                             std::string& string) {
+    string +=
+        fmt::format("PcmInt16DataSourceVersion2Command\n\toutput_index {:02X} channel {} "
+                    "channel count {} source sample rate {} target sample rate {} src quality {}\n",
+                    output_index, channel_index, channel_count, sample_rate,
+                    processor.target_sample_rate, src_quality);
+}
+
+void PcmInt16DataSourceVersion2Command::Process(const ADSP::CommandListProcessor& processor) {
+    auto out_buffer = processor.mix_buffers.subspan(output_index * processor.sample_count,
+                                                    processor.sample_count);
+    DecodeFromWaveBuffersArgs args{
+        .sample_format{SampleFormat::PcmInt16},
+        .output{out_buffer},
+        .voice_state{reinterpret_cast<VoiceState*>(voice_state)},
+        .wave_buffers{wave_buffers},
+        .channel{channel_index},
+        .channel_count{channel_count},
+        .src_quality{src_quality},
+        .pitch{pitch},
+        .source_sample_rate{sample_rate},
+        .target_sample_rate{processor.target_sample_rate},
+        .sample_count{processor.sample_count},
+        .data_address{0},
+        .data_size{0},
+        .IsVoicePlayedSampleCountResetAtLoopPointSupported{(flags & 1) != 0},
+        .IsVoicePitchAndSrcSkippedSupported{(flags & 2) != 0},
+    };
+
+    DecodeFromWaveBuffers(*processor.memory, args);
+}
+
+bool PcmInt16DataSourceVersion2Command::Verify(const ADSP::CommandListProcessor& processor) {
+    return true;
+}
+
+} // namespace AudioCore::AudioRenderer

src/audio_core/renderer/command/data_source/pcm_int16.h

@@ -0,0 +1,110 @@
+// SPDX-FileCopyrightText: Copyright 2022 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#include <string>
+
+#include "audio_core/common/wave_buffer.h"
+#include "audio_core/renderer/command/icommand.h"
+#include "common/common_types.h"
+
+namespace AudioCore::AudioRenderer {
+namespace ADSP {
+class CommandListProcessor;
+}
+
+/**
+ * AudioRenderer command to decode PCM s16-encoded version 1 wavebuffers
+ * into the output_index mix buffer.
+ */
+struct PcmInt16DataSourceVersion1Command : ICommand {
+    /**
+     * Print this command's information to a string.
+     *
+     * @param processor - The CommandListProcessor processing this command.
+     * @param string    - The string to print into.
+     */
+    void Dump(const ADSP::CommandListProcessor& processor, std::string& string) override;
+
+    /**
+     * Process this command.
+     *
+     * @param processor - The CommandListProcessor processing this command.
+     */
+    void Process(const ADSP::CommandListProcessor& processor) override;
+
+    /**
+     * Verify this command's data is valid.
+     *
+     * @param processor - The CommandListProcessor processing this command.
+     * @return True if the command is valid, otherwise false.
+     */
+    bool Verify(const ADSP::CommandListProcessor& processor) override;
+
+    /// Quality used for sample rate conversion
+    SrcQuality src_quality;
+    /// Mix buffer index for decoded samples
+    s16 output_index;
+    /// Flags to control decoding (see AudioCore::AudioRenderer::VoiceInfo::Flags)
+    u16 flags;
+    /// Wavebuffer sample rate
+    u32 sample_rate;
+    /// Pitch used for sample rate conversion
+    f32 pitch;
+    /// Target channel to read within the wavebuffer
+    s8 channel_index;
+    /// Number of channels within the wavebuffer
+    s8 channel_count;
+    /// Wavebuffers containing the wavebuffer address, context address, looping information etc
+    std::array<WaveBufferVersion2, MaxWaveBuffers> wave_buffers;
+    /// Voice state, updated each call and written back to game
+    CpuAddr voice_state;
+};
+
+/**
+ * AudioRenderer command to decode PCM s16-encoded version 2 wavebuffers
+ * into the output_index mix buffer.
+ */
+struct PcmInt16DataSourceVersion2Command : ICommand {
+    /**
+     * Print this command's information to a string.
+     * @param processor - The CommandListProcessor processing this command.
+     * @param string    - The string to print into.
+     */
+    void Dump(const ADSP::CommandListProcessor& processor, std::string& string) override;
+
+    /**
+     * Process this command.
+     * @param processor - The CommandListProcessor processing this command.
+     */
+    void Process(const ADSP::CommandListProcessor& processor) override;
+
+    /**
+     * Verify this command's data is valid.
+     * @param processor - The CommandListProcessor processing this command.
+     * @return True if the command is valid, otherwise false.
+     */
+    bool Verify(const ADSP::CommandListProcessor& processor) override;
+
+    /// Quality used for sample rate conversion
+    SrcQuality src_quality;
+    /// Mix buffer index for decoded samples
+    s16 output_index;
+    /// Flags to control decoding (see AudioCore::AudioRenderer::VoiceInfo::Flags)
+    u16 flags;
+    /// Wavebuffer sample rate
+    u32 sample_rate;
+    /// Pitch used for sample rate conversion
+    f32 pitch;
+    /// Target channel to read within the wavebuffer
+    s8 channel_index;
+    /// Number of channels within the wavebuffer
+    s8 channel_count;
+    /// Wavebuffers containing the wavebuffer address, context address, looping information etc
+    std::array<WaveBufferVersion2, MaxWaveBuffers> wave_buffers;
+    /// Voice state, updated each call and written back to game
+    CpuAddr voice_state;
+};
+
+} // namespace AudioCore::AudioRenderer

src/audio_core/renderer/command/effect/aux_.cpp

@@ -0,0 +1,207 @@
+// SPDX-FileCopyrightText: Copyright 2022 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include "audio_core/renderer/adsp/command_list_processor.h"
+#include "audio_core/renderer/command/effect/aux_.h"
+#include "audio_core/renderer/effect/aux_.h"
+#include "core/memory.h"
+
+namespace AudioCore::AudioRenderer {
+/**
+ * Reset an AuxBuffer.
+ *
+ * @param memory   - Core memory for writing.
+ * @param aux_info - Memory address pointing to the AuxInfo to reset.
+ */
+static void ResetAuxBufferDsp(Core::Memory::Memory& memory, const CpuAddr aux_info) {
+    if (aux_info == 0) {
+        LOG_ERROR(Service_Audio, "Aux info is 0!");
+        return;
+    }
+
+    auto info{reinterpret_cast<AuxInfo::AuxInfoDsp*>(memory.GetPointer(aux_info))};
+    info->read_offset = 0;
+    info->write_offset = 0;
+    info->total_sample_count = 0;
+}
+
+/**
+ * Write the given input mix buffer to the memory at send_buffer, and update send_info_ if
+ * update_count is set, to notify the game that an update happened.
+ *
+ * @param memory       - Core memory for writing.
+ * @param send_info_   - Meta information for where to write the mix buffer.
+ * @param sample_count - Unused.
+ * @param send_buffer  - Memory address to write the mix buffer to.
+ * @param count_max    - Maximum number of samples in the receiving buffer.
+ * @param input        - Input mix buffer to write.
+ * @param write_count_ - Number of samples to write.
+ * @param write_offset - Current offset to begin writing the receiving buffer at.
+ * @param update_count - If non-zero, send_info_ will be updated.
+ * @return Number of samples written.
+ */
+static u32 WriteAuxBufferDsp(Core::Memory::Memory& memory, const CpuAddr send_info_,
+                             [[maybe_unused]] u32 sample_count, const CpuAddr send_buffer,
+                             const u32 count_max, std::span<const s32> input,
+                             const u32 write_count_, const u32 write_offset,
+                             const u32 update_count) {
+    if (write_count_ > count_max) {
+        LOG_ERROR(Service_Audio,
+                  "write_count must be smaller than count_max! write_count {}, count_max {}",
+                  write_count_, count_max);
+        return 0;
+    }
+
+    if (input.empty()) {
+        LOG_ERROR(Service_Audio, "input buffer is empty!");
+        return 0;
+    }
+
+    if (send_buffer == 0) {
+        LOG_ERROR(Service_Audio, "send_buffer is 0!");
+        return 0;
+    }
+
+    if (count_max == 0) {
+        return 0;
+    }
+
+    AuxInfo::AuxInfoDsp send_info{};
+    memory.ReadBlockUnsafe(send_info_, &send_info, sizeof(AuxInfo::AuxInfoDsp));
+
+    u32 target_write_offset{send_info.write_offset + write_offset};
+    if (target_write_offset > count_max || write_count_ == 0) {
+        return 0;
+    }
+
+    u32 write_count{write_count_};
+    u32 write_pos{0};
+    while (write_count > 0) {
+        u32 to_write{std::min(count_max - target_write_offset, write_count)};
+
+        if (to_write > 0) {
+            memory.WriteBlockUnsafe(send_buffer + target_write_offset * sizeof(s32),
+                                    &input[write_pos], to_write * sizeof(s32));
+        }
+
+        target_write_offset = (target_write_offset + to_write) % count_max;
+        write_count -= to_write;
+        write_pos += to_write;
+    }
+
+    if (update_count) {
+        send_info.write_offset = (send_info.write_offset + update_count) % count_max;
+    }
+
+    memory.WriteBlockUnsafe(send_info_, &send_info, sizeof(AuxInfo::AuxInfoDsp));
+
+    return write_count_;
+}
+
+/**
+ * Read the given memory at return_buffer into the output mix buffer, and update return_info_ if
+ * update_count is set, to notify the game that an update happened.
+ *
+ * @param memory        - Core memory for writing.
+ * @param return_info_  - Meta information for where to read the mix buffer.
+ * @param return_buffer - Memory address to read the samples from.
+ * @param count_max     - Maximum number of samples in the receiving buffer.
+ * @param output        - Output mix buffer which will receive the samples.
+ * @param count_        - Number of samples to read.
+ * @param read_offset   - Current offset to begin reading the return_buffer at.
+ * @param update_count  - If non-zero, send_info_ will be updated.
+ * @return Number of samples read.
+ */
+static u32 ReadAuxBufferDsp(Core::Memory::Memory& memory, const CpuAddr return_info_,
+                            const CpuAddr return_buffer, const u32 count_max, std::span<s32> output,
+                            const u32 count_, const u32 read_offset, const u32 update_count) {
+    if (count_max == 0) {
+        return 0;
+    }
+
+    if (count_ > count_max) {
+        LOG_ERROR(Service_Audio, "count must be smaller than count_max! count {}, count_max {}",
+                  count_, count_max);
+        return 0;
+    }
+
+    if (output.empty()) {
+        LOG_ERROR(Service_Audio, "output buffer is empty!");
+        return 0;
+    }
+
+    if (return_buffer == 0) {
+        LOG_ERROR(Service_Audio, "return_buffer is 0!");
+        return 0;
+    }
+
+    AuxInfo::AuxInfoDsp return_info{};
+    memory.ReadBlockUnsafe(return_info_, &return_info, sizeof(AuxInfo::AuxInfoDsp));
+
+    u32 target_read_offset{return_info.read_offset + read_offset};
+    if (target_read_offset > count_max) {
+        return 0;
+    }
+
+    u32 read_count{count_};
+    u32 read_pos{0};
+    while (read_count > 0) {
+        u32 to_read{std::min(count_max - target_read_offset, read_count)};
+
+        if (to_read > 0) {
+            memory.ReadBlockUnsafe(return_buffer + target_read_offset * sizeof(s32),
+                                   &output[read_pos], to_read * sizeof(s32));
+        }
+
+        target_read_offset = (target_read_offset + to_read) % count_max;
+        read_count -= to_read;
+        read_pos += to_read;
+    }
+
+    if (update_count) {
+        return_info.read_offset = (return_info.read_offset + update_count) % count_max;
+    }
+
+    memory.WriteBlockUnsafe(return_info_, &return_info, sizeof(AuxInfo::AuxInfoDsp));
+
+    return count_;
+}
+
+void AuxCommand::Dump([[maybe_unused]] const ADSP::CommandListProcessor& processor,
+                      std::string& string) {
+    string += fmt::format("AuxCommand\n\tenabled {} input {:02X} output {:02X}\n", effect_enabled,
+                          input, output);
+}
+
+void AuxCommand::Process(const ADSP::CommandListProcessor& processor) {
+    auto input_buffer{
+        processor.mix_buffers.subspan(input * processor.sample_count, processor.sample_count)};
+    auto output_buffer{
+        processor.mix_buffers.subspan(output * processor.sample_count, processor.sample_count)};
+
+    if (effect_enabled) {
+        WriteAuxBufferDsp(*processor.memory, send_buffer_info, processor.sample_count, send_buffer,
+                          count_max, input_buffer, processor.sample_count, write_offset,
+                          update_count);
+
+        auto read{ReadAuxBufferDsp(*processor.memory, return_buffer_info, return_buffer, count_max,
+                                   output_buffer, processor.sample_count, write_offset,
+                                   update_count)};
+
+        if (read != processor.sample_count) {
+            std::memset(&output_buffer[read], 0, processor.sample_count - read);
+        }
+    } else {
+        ResetAuxBufferDsp(*processor.memory, send_buffer_info);
+        ResetAuxBufferDsp(*processor.memory, return_buffer_info);
+        if (input != output) {
+            std::memcpy(output_buffer.data(), input_buffer.data(), output_buffer.size_bytes());
+        }
+    }
+}
+
+bool AuxCommand::Verify(const ADSP::CommandListProcessor& processor) {
+    return true;
+}
+
+} // namespace AudioCore::AudioRenderer

src/audio_core/renderer/command/effect/aux_.h

@@ -0,0 +1,66 @@
+// SPDX-FileCopyrightText: Copyright 2022 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#include <string>
+
+#include "audio_core/renderer/command/icommand.h"
+#include "common/common_types.h"
+
+namespace AudioCore::AudioRenderer {
+namespace ADSP {
+class CommandListProcessor;
+}
+
+/**
+ * AudioRenderer command to read and write an auxiliary buffer, writing the input mix buffer to game
+ * memory, and reading into the output buffer from game memory.
+ */
+struct AuxCommand : ICommand {
+    /**
+     * Print this command's information to a string.
+     *
+     * @param processor - The CommandListProcessor processing this command.
+     * @param string    - The string to print into.
+     */
+    void Dump(const ADSP::CommandListProcessor& processor, std::string& string) override;
+
+    /**
+     * Process this command.
+     *
+     * @param processor - The CommandListProcessor processing this command.
+     */
+    void Process(const ADSP::CommandListProcessor& processor) override;
+
+    /**
+     * Verify this command's data is valid.
+     *
+     * @param processor - The CommandListProcessor processing this command.
+     * @return True if the command is valid, otherwise false.
+     */
+    bool Verify(const ADSP::CommandListProcessor& processor) override;
+
+    /// Input mix buffer index
+    s16 input;
+    /// Output mix buffer index
+    s16 output;
+    /// Meta info for writing
+    CpuAddr send_buffer_info;
+    /// Meta info for reading
+    CpuAddr return_buffer_info;
+    /// Game memory write buffer
+    CpuAddr send_buffer;
+    /// Game memory read buffer
+    CpuAddr return_buffer;
+    /// Max samples to read/write
+    u32 count_max;
+    /// Current read/write offset
+    u32 write_offset;
+    /// Number of samples to update per call
+    u32 update_count;
+    /// is this effect enabled?
+    bool effect_enabled;
+};
+
+} // namespace AudioCore::AudioRenderer

src/audio_core/renderer/command/effect/biquad_filter.cpp

@@ -0,0 +1,118 @@
+// SPDX-FileCopyrightText: Copyright 2022 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include "audio_core/renderer/adsp/command_list_processor.h"
+#include "audio_core/renderer/command/effect/biquad_filter.h"
+#include "audio_core/renderer/voice/voice_state.h"
+
+namespace AudioCore::AudioRenderer {
+/**
+ * Biquad filter float implementation.
+ *
+ * @param output       - Output container for filtered samples.
+ * @param input        - Input container for samples to be filtered.
+ * @param b            - Feedforward coefficients.
+ * @param a            - Feedback coefficients.
+ * @param state        - State to track previous samples between calls.
+ * @param sample_count - Number of samples to process.
+ */
+void ApplyBiquadFilterFloat(std::span<s32> output, std::span<const s32> input,
+                            std::array<s16, 3>& b_, std::array<s16, 2>& a_,
+                            VoiceState::BiquadFilterState& state, const u32 sample_count) {
+    constexpr s64 min{std::numeric_limits<s32>::min()};
+    constexpr s64 max{std::numeric_limits<s32>::max()};
+    std::array<f64, 3> b{Common::FixedPoint<50, 14>::from_base(b_[0]).to_double(),
+                         Common::FixedPoint<50, 14>::from_base(b_[1]).to_double(),
+                         Common::FixedPoint<50, 14>::from_base(b_[2]).to_double()};
+    std::array<f64, 2> a{Common::FixedPoint<50, 14>::from_base(a_[0]).to_double(),
+                         Common::FixedPoint<50, 14>::from_base(a_[1]).to_double()};
+    std::array<f64, 4> s{state.s0.to_double(), state.s1.to_double(), state.s2.to_double(),
+                         state.s3.to_double()};
+
+    for (u32 i = 0; i < sample_count; i++) {
+        f64 in_sample{static_cast<f64>(input[i])};
+        auto sample{in_sample * b[0] + s[0] * b[1] + s[1] * b[2] + s[2] * a[0] + s[3] * a[1]};
+
+        output[i] = static_cast<s32>(std::clamp(static_cast<s64>(sample), min, max));
+
+        s[1] = s[0];
+        s[0] = in_sample;
+        s[3] = s[2];
+        s[2] = sample;
+    }
+
+    state.s0 = s[0];
+    state.s1 = s[1];
+    state.s2 = s[2];
+    state.s3 = s[3];
+}
+
+/**
+ * Biquad filter s32 implementation.
+ *
+ * @param output       - Output container for filtered samples.
+ * @param input        - Input container for samples to be filtered.
+ * @param b            - Feedforward coefficients.
+ * @param a            - Feedback coefficients.
+ * @param state        - State to track previous samples between calls.
+ * @param sample_count - Number of samples to process.
+ */
+static void ApplyBiquadFilterInt(std::span<s32> output, std::span<const s32> input,
+                                 std::array<s16, 3>& b_, std::array<s16, 2>& a_,
+                                 VoiceState::BiquadFilterState& state, const u32 sample_count) {
+    constexpr s64 min{std::numeric_limits<s32>::min()};
+    constexpr s64 max{std::numeric_limits<s32>::max()};
+    std::array<Common::FixedPoint<50, 14>, 3> b{
+        Common::FixedPoint<50, 14>::from_base(b_[0]),
+        Common::FixedPoint<50, 14>::from_base(b_[1]),
+        Common::FixedPoint<50, 14>::from_base(b_[2]),
+    };
+    std::array<Common::FixedPoint<50, 14>, 3> a{
+        Common::FixedPoint<50, 14>::from_base(a_[0]),
+        Common::FixedPoint<50, 14>::from_base(a_[1]),
+    };
+
+    for (u32 i = 0; i < sample_count; i++) {
+        s64 in_sample{input[i]};
+        auto sample{in_sample * b[0] + state.s0};
+        const auto out_sample{std::clamp(sample.to_long(), min, max)};
+
+        output[i] = static_cast<s32>(out_sample);
+
+        state.s0 = state.s1 + b[1] * in_sample + a[0] * out_sample;
+        state.s1 = 0 + b[2] * in_sample + a[1] * out_sample;
+    }
+}
+
+void BiquadFilterCommand::Dump([[maybe_unused]] const ADSP::CommandListProcessor& processor,
+                               std::string& string) {
+    string += fmt::format(
+        "BiquadFilterCommand\n\tinput {:02X} output {:02X} needs_init {} use_float_processing {}\n",
+        input, output, needs_init, use_float_processing);
+}
+
+void BiquadFilterCommand::Process(const ADSP::CommandListProcessor& processor) {
+    auto state_{reinterpret_cast<VoiceState::BiquadFilterState*>(state)};
+    if (needs_init) {
+        std::memset(state_, 0, sizeof(VoiceState::BiquadFilterState));
+    }
+
+    auto input_buffer{
+        processor.mix_buffers.subspan(input * processor.sample_count, processor.sample_count)};
+    auto output_buffer{
+        processor.mix_buffers.subspan(output * processor.sample_count, processor.sample_count)};
+
+    if (use_float_processing) {
+        ApplyBiquadFilterFloat(output_buffer, input_buffer, biquad.b, biquad.a, *state_,
+                               processor.sample_count);
+    } else {
+        ApplyBiquadFilterInt(output_buffer, input_buffer, biquad.b, biquad.a, *state_,
+                             processor.sample_count);
+    }
+}
+
+bool BiquadFilterCommand::Verify(const ADSP::CommandListProcessor& processor) {
+    return true;
+}
+
+} // namespace AudioCore::AudioRenderer

src/audio_core/renderer/command/effect/biquad_filter.h

@@ -0,0 +1,74 @@
+// SPDX-FileCopyrightText: Copyright 2022 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#include <string>
+
+#include "audio_core/renderer/command/icommand.h"
+#include "audio_core/renderer/voice/voice_info.h"
+#include "audio_core/renderer/voice/voice_state.h"
+#include "common/common_types.h"
+
+namespace AudioCore::AudioRenderer {
+namespace ADSP {
+class CommandListProcessor;
+}
+
+/**
+ * AudioRenderer command for applying a biquad filter to the input mix buffer, saving the results to
+ * the output mix buffer.
+ */
+struct BiquadFilterCommand : ICommand {
+    /**
+     * Print this command's information to a string.
+     *
+     * @param processor - The CommandListProcessor processing this command.
+     * @param string    - The string to print into.
+     */
+    void Dump(const ADSP::CommandListProcessor& processor, std::string& string) override;
+
+    /**
+     * Process this command.
+     *
+     * @param processor - The CommandListProcessor processing this command.
+     */
+    void Process(const ADSP::CommandListProcessor& processor) override;
+
+    /**
+     * Verify this command's data is valid.
+     *
+     * @param processor - The CommandListProcessor processing this command.
+     * @return True if the command is valid, otherwise false.
+     */
+    bool Verify(const ADSP::CommandListProcessor& processor) override;
+
+    /// Input mix buffer index
+    s16 input;
+    /// Output mix buffer index
+    s16 output;
+    /// Input parameters for biquad
+    VoiceInfo::BiquadFilterParameter biquad;
+    /// Biquad state, updated each call
+    CpuAddr state;
+    /// If true, reset the state
+    bool needs_init;
+    /// If true, use float processing rather than int
+    bool use_float_processing;
+};
+
+/**
+ * Biquad filter float implementation.
+ *
+ * @param output       - Output container for filtered samples.
+ * @param input        - Input container for samples to be filtered.
+ * @param b            - Feedforward coefficients.
+ * @param a            - Feedback coefficients.
+ * @param state        - State to track previous samples.
+ * @param sample_count - Number of samples to process.
+ */
+void ApplyBiquadFilterFloat(std::span<s32> output, std::span<const s32> input,
+                            std::array<s16, 3>& b, std::array<s16, 2>& a,
+                            VoiceState::BiquadFilterState& state, const u32 sample_count);
+
+} // namespace AudioCore::AudioRenderer

src/audio_core/renderer/command/effect/capture.cpp

@@ -0,0 +1,142 @@
+// SPDX-FileCopyrightText: Copyright 2022 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include "audio_core/renderer/adsp/command_list_processor.h"
+#include "audio_core/renderer/command/effect/capture.h"
+#include "audio_core/renderer/effect/aux_.h"
+#include "core/memory.h"
+
+namespace AudioCore::AudioRenderer {
+/**
+ * Reset an AuxBuffer.
+ *
+ * @param memory   - Core memory for writing.
+ * @param aux_info - Memory address pointing to the AuxInfo to reset.
+ */
+static void ResetAuxBufferDsp(Core::Memory::Memory& memory, const CpuAddr aux_info) {
+    if (aux_info == 0) {
+        LOG_ERROR(Service_Audio, "Aux info is 0!");
+        return;
+    }
+
+    memory.Write32(VAddr(aux_info + offsetof(AuxInfo::AuxInfoDsp, read_offset)), 0);
+    memory.Write32(VAddr(aux_info + offsetof(AuxInfo::AuxInfoDsp, write_offset)), 0);
+    memory.Write32(VAddr(aux_info + offsetof(AuxInfo::AuxInfoDsp, total_sample_count)), 0);
+}
+
+/**
+ * Write the given input mix buffer to the memory at send_buffer, and update send_info_ if
+ * update_count is set, to notify the game that an update happened.
+ *
+ * @param memory       - Core memory for writing.
+ * @param send_info_   - Header information for where to write the mix buffer.
+ * @param send_buffer  - Memory address to write the mix buffer to.
+ * @param count_max    - Maximum number of samples in the receiving buffer.
+ * @param input        - Input mix buffer to write.
+ * @param write_count_ - Number of samples to write.
+ * @param write_offset - Current offset to begin writing the receiving buffer at.
+ * @param update_count - If non-zero, send_info_ will be updated.
+ * @return Number of samples written.
+ */
+static u32 WriteAuxBufferDsp(Core::Memory::Memory& memory, const CpuAddr send_info_,
+                             const CpuAddr send_buffer, u32 count_max, std::span<const s32> input,
+                             const u32 write_count_, const u32 write_offset,
+                             const u32 update_count) {
+    if (write_count_ > count_max) {
+        LOG_ERROR(Service_Audio,
+                  "write_count must be smaller than count_max! write_count {}, count_max {}",
+                  write_count_, count_max);
+        return 0;
+    }
+
+    if (send_info_ == 0) {
+        LOG_ERROR(Service_Audio, "send_info is 0!");
+        return 0;
+    }
+
+    if (input.empty()) {
+        LOG_ERROR(Service_Audio, "input buffer is empty!");
+        return 0;
+    }
+
+    if (send_buffer == 0) {
+        LOG_ERROR(Service_Audio, "send_buffer is 0!");
+        return 0;
+    }
+
+    if (count_max == 0) {
+        return 0;
+    }
+
+    AuxInfo::AuxBufferInfo send_info{};
+    memory.ReadBlockUnsafe(send_info_, &send_info, sizeof(AuxInfo::AuxBufferInfo));
+
+    u32 target_write_offset{send_info.dsp_info.write_offset + write_offset};
+    if (target_write_offset > count_max || write_count_ == 0) {
+        return 0;
+    }
+
+    u32 write_count{write_count_};
+    u32 write_pos{0};
+    while (write_count > 0) {
+        u32 to_write{std::min(count_max - target_write_offset, write_count)};
+
+        if (to_write > 0) {
+            memory.WriteBlockUnsafe(send_buffer + target_write_offset * sizeof(s32),
+                                    &input[write_pos], to_write * sizeof(s32));
+        }
+
+        target_write_offset = (target_write_offset + to_write) % count_max;
+        write_count -= to_write;
+        write_pos += to_write;
+    }
+
+    if (update_count) {
+        const auto count_diff{send_info.dsp_info.total_sample_count -
+                              send_info.cpu_info.total_sample_count};
+        if (count_diff >= count_max) {
+            auto dsp_lost_count{send_info.dsp_info.lost_sample_count + update_count};
+            if (dsp_lost_count - send_info.cpu_info.lost_sample_count <
+                send_info.dsp_info.lost_sample_count - send_info.cpu_info.lost_sample_count) {
+                dsp_lost_count = send_info.cpu_info.lost_sample_count - 1;
+            }
+            send_info.dsp_info.lost_sample_count = dsp_lost_count;
+        }
+
+        send_info.dsp_info.write_offset =
+            (send_info.dsp_info.write_offset + update_count + count_max) % count_max;
+
+        auto new_sample_count{send_info.dsp_info.total_sample_count + update_count};
+        if (new_sample_count - send_info.cpu_info.total_sample_count < count_diff) {
+            new_sample_count = send_info.cpu_info.total_sample_count - 1;
+        }
+        send_info.dsp_info.total_sample_count = new_sample_count;
+    }
+
+    memory.WriteBlockUnsafe(send_info_, &send_info, sizeof(AuxInfo::AuxBufferInfo));
+
+    return write_count_;
+}
+
+void CaptureCommand::Dump([[maybe_unused]] const ADSP::CommandListProcessor& processor,
+                          std::string& string) {
+    string += fmt::format("CaptureCommand\n\tenabled {} input {:02X} output {:02X}", effect_enabled,
+                          input, output);
+}
+
+void CaptureCommand::Process(const ADSP::CommandListProcessor& processor) {
+    if (effect_enabled) {
+        auto input_buffer{
+            processor.mix_buffers.subspan(input * processor.sample_count, processor.sample_count)};
+        WriteAuxBufferDsp(*processor.memory, send_buffer_info, send_buffer, count_max, input_buffer,
+                          processor.sample_count, write_offset, update_count);
+    } else {
+        ResetAuxBufferDsp(*processor.memory, send_buffer_info);
+    }
+}
+
+bool CaptureCommand::Verify(const ADSP::CommandListProcessor& processor) {
+    return true;
+}
+
+} // namespace AudioCore::AudioRenderer

src/audio_core/renderer/command/effect/capture.h

@@ -0,0 +1,62 @@
+// SPDX-FileCopyrightText: Copyright 2022 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#include <string>
+
+#include "audio_core/renderer/command/icommand.h"
+#include "common/common_types.h"
+
+namespace AudioCore::AudioRenderer {
+namespace ADSP {
+class CommandListProcessor;
+}
+
+/**
+ * AudioRenderer command for capturing a mix buffer. That is, writing it back to a given game memory
+ * address.
+ */
+struct CaptureCommand : ICommand {
+    /**
+     * Print this command's information to a string.
+     *
+     * @param processor - The CommandListProcessor processing this command.
+     * @param string    - The string to print into.
+     */
+    void Dump(const ADSP::CommandListProcessor& processor, std::string& string) override;
+
+    /**
+     * Process this command.
+     *
+     * @param processor - The CommandListProcessor processing this command.
+     */
+    void Process(const ADSP::CommandListProcessor& processor) override;
+
+    /**
+     * Verify this command's data is valid.
+     *
+     * @param processor - The CommandListProcessor processing this command.
+     * @return True if the command is valid, otherwise false.
+     */
+    bool Verify(const ADSP::CommandListProcessor& processor) override;
+
+    /// Input mix buffer index
+    s16 input;
+    /// Output mix buffer index
+    s16 output;
+    /// Meta info for writing
+    CpuAddr send_buffer_info;
+    /// Game memory write buffer
+    CpuAddr send_buffer;
+    /// Max samples to read/write
+    u32 count_max;
+    /// Current read/write offset
+    u32 write_offset;
+    /// Number of samples to update per call
+    u32 update_count;
+    /// is this effect enabled?
+    bool effect_enabled;
+};
+
+} // namespace AudioCore::AudioRenderer

src/audio_core/renderer/command/effect/compressor.cpp

@@ -0,0 +1,156 @@
+// SPDX-FileCopyrightText: Copyright 2022 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include <cmath>
+#include <span>
+#include <vector>
+
+#include "audio_core/renderer/adsp/command_list_processor.h"
+#include "audio_core/renderer/command/effect/compressor.h"
+#include "audio_core/renderer/effect/compressor.h"
+
+namespace AudioCore::AudioRenderer {
+
+static void SetCompressorEffectParameter(CompressorInfo::ParameterVersion2& params,
+                                         CompressorInfo::State& state) {
+    const auto ratio{1.0f / params.compressor_ratio};
+    auto makeup_gain{0.0f};
+    if (params.makeup_gain_enabled) {
+        makeup_gain = (params.threshold * 0.5f) * (ratio - 1.0f) - 3.0f;
+    }
+    state.makeup_gain = makeup_gain;
+    state.unk_18 = params.unk_28;
+
+    const auto a{(params.out_gain + makeup_gain) / 20.0f * 3.3219f};
+    const auto b{(a - std::trunc(a)) * 0.69315f};
+    const auto c{std::pow(2.0f, b)};
+
+    state.unk_0C = (1.0f - ratio) / 6.0f;
+    state.unk_14 = params.threshold + 1.5f;
+    state.unk_10 = params.threshold - 1.5f;
+    state.unk_20 = c;
+}
+
+static void InitializeCompressorEffect(CompressorInfo::ParameterVersion2& params,
+                                       CompressorInfo::State& state) {
+    std::memset(&state, 0, sizeof(CompressorInfo::State));
+
+    state.unk_00 = 0;
+    state.unk_04 = 1.0f;
+    state.unk_08 = 1.0f;
+
+    SetCompressorEffectParameter(params, state);
+}
+
+static void ApplyCompressorEffect(CompressorInfo::ParameterVersion2& params,
+                                  CompressorInfo::State& state, bool enabled,
+                                  std::vector<std::span<const s32>> input_buffers,
+                                  std::vector<std::span<s32>> output_buffers, u32 sample_count) {
+    if (enabled) {
+        auto state_00{state.unk_00};
+        auto state_04{state.unk_04};
+        auto state_08{state.unk_08};
+        auto state_18{state.unk_18};
+
+        for (u32 i = 0; i < sample_count; i++) {
+            auto a{0.0f};
+            for (s16 channel = 0; channel < params.channel_count; channel++) {
+                const auto input_sample{Common::FixedPoint<49, 15>(input_buffers[channel][i])};
+                a += (input_sample * input_sample).to_float();
+            }
+
+            state_00 += params.unk_24 * ((a / params.channel_count) - state.unk_00);
+
+            auto b{-100.0f};
+            auto c{0.0f};
+            if (state_00 >= 1.0e-10) {
+                b = std::log10(state_00) * 10.0f;
+                c = 1.0f;
+            }
+
+            if (b >= state.unk_10) {
+                const auto d{b >= state.unk_14
+                                 ? ((1.0f / params.compressor_ratio) - 1.0f) *
+                                       (b - params.threshold)
+                                 : (b - state.unk_10) * (b - state.unk_10) * -state.unk_0C};
+                const auto e{d / 20.0f * 3.3219f};
+                const auto f{(e - std::trunc(e)) * 0.69315f};
+                c = std::pow(2.0f, f);
+            }
+
+            state_18 = params.unk_28;
+            auto tmp{c};
+            if ((state_04 - c) <= 0.08f) {
+                state_18 = params.unk_2C;
+                if (((state_04 - c) >= -0.08f) && (std::abs(state_08 - c) >= 0.001f)) {
+                    tmp = state_04;
+                }
+            }
+
+            state_04 = tmp;
+            state_08 += (c - state_08) * state_18;
+
+            for (s16 channel = 0; channel < params.channel_count; channel++) {
+                output_buffers[channel][i] = static_cast<s32>(
+                    static_cast<f32>(input_buffers[channel][i]) * state_08 * state.unk_20);
+            }
+        }
+
+        state.unk_00 = state_00;
+        state.unk_04 = state_04;
+        state.unk_08 = state_08;
+        state.unk_18 = state_18;
+    } else {
+        for (s16 channel = 0; channel < params.channel_count; channel++) {
+            if (params.inputs[channel] != params.outputs[channel]) {
+                std::memcpy((char*)output_buffers[channel].data(),
+                            (char*)input_buffers[channel].data(),
+                            output_buffers[channel].size_bytes());
+            }
+        }
+    }
+}
+
+void CompressorCommand::Dump([[maybe_unused]] const ADSP::CommandListProcessor& processor,
+                             std::string& string) {
+    string += fmt::format("CompressorCommand\n\tenabled {} \n\tinputs: ", effect_enabled);
+    for (s16 i = 0; i < parameter.channel_count; i++) {
+        string += fmt::format("{:02X}, ", inputs[i]);
+    }
+    string += "\n\toutputs: ";
+    for (s16 i = 0; i < parameter.channel_count; i++) {
+        string += fmt::format("{:02X}, ", outputs[i]);
+    }
+    string += "\n";
+}
+
+void CompressorCommand::Process(const ADSP::CommandListProcessor& processor) {
+    std::vector<std::span<const s32>> input_buffers(parameter.channel_count);
+    std::vector<std::span<s32>> output_buffers(parameter.channel_count);
+
+    for (s16 i = 0; i < parameter.channel_count; i++) {
+        input_buffers[i] = processor.mix_buffers.subspan(inputs[i] * processor.sample_count,
+                                                         processor.sample_count);
+        output_buffers[i] = processor.mix_buffers.subspan(outputs[i] * processor.sample_count,
+                                                          processor.sample_count);
+    }
+
+    auto state_{reinterpret_cast<CompressorInfo::State*>(state)};
+
+    if (effect_enabled) {
+        if (parameter.state == CompressorInfo::ParameterState::Updating) {
+            SetCompressorEffectParameter(parameter, *state_);
+        } else if (parameter.state == CompressorInfo::ParameterState::Initialized) {
+            InitializeCompressorEffect(parameter, *state_);
+        }
+    }
+
+    ApplyCompressorEffect(parameter, *state_, effect_enabled, input_buffers, output_buffers,
+                          processor.sample_count);
+}
+
+bool CompressorCommand::Verify(const ADSP::CommandListProcessor& processor) {
+    return true;
+}
+
+} // namespace AudioCore::AudioRenderer

src/audio_core/renderer/command/effect/compressor.h

@@ -0,0 +1,60 @@
+// SPDX-FileCopyrightText: Copyright 2022 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#include <array>
+#include <string>
+
+#include "audio_core/renderer/command/icommand.h"
+#include "audio_core/renderer/effect/compressor.h"
+#include "common/common_types.h"
+
+namespace AudioCore::AudioRenderer {
+namespace ADSP {
+class CommandListProcessor;
+}
+
+/**
+ * AudioRenderer command for limiting volume between a high and low threshold.
+ * Version 1.
+ */
+struct CompressorCommand : ICommand {
+    /**
+     * Print this command's information to a string.
+     *
+     * @param processor - The CommandListProcessor processing this command.
+     * @param string    - The string to print into.
+     */
+    void Dump(const ADSP::CommandListProcessor& processor, std::string& string) override;
+
+    /**
+     * Process this command.
+     *
+     * @param processor - The CommandListProcessor processing this command.
+     */
+    void Process(const ADSP::CommandListProcessor& processor) override;
+
+    /**
+     * Verify this command's data is valid.
+     *
+     * @param processor - The CommandListProcessor processing this command.
+     * @return True if the command is valid, otherwise false.
+     */
+    bool Verify(const ADSP::CommandListProcessor& processor) override;
+
+    /// Input mix buffer offsets for each channel
+    std::array<s16, MaxChannels> inputs;
+    /// Output mix buffer offsets for each channel
+    std::array<s16, MaxChannels> outputs;
+    /// Input parameters
+    CompressorInfo::ParameterVersion2 parameter;
+    /// State, updated each call
+    CpuAddr state;
+    /// Game-supplied workbuffer (Unused)
+    CpuAddr workbuffer;
+    /// Is this effect enabled?
+    bool effect_enabled;
+};
+
+} // namespace AudioCore::AudioRenderer

src/audio_core/renderer/command/effect/delay.cpp

@@ -0,0 +1,238 @@
+// SPDX-FileCopyrightText: Copyright 2022 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include "audio_core/renderer/adsp/command_list_processor.h"
+#include "audio_core/renderer/command/effect/delay.h"
+
+namespace AudioCore::AudioRenderer {
+/**
+ * Update the DelayInfo state according to the given parameters.
+ *
+ * @param params - Input parameters to update the state.
+ * @param state  - State to be updated.
+ */
+static void SetDelayEffectParameter(const DelayInfo::ParameterVersion1& params,
+                                    DelayInfo::State& state) {
+    auto channel_spread{params.channel_spread};
+    state.feedback_gain = params.feedback_gain * 0.97998046875f;
+    state.delay_feedback_gain = state.feedback_gain * (1.0f - channel_spread);
+    if (params.channel_count == 4 || params.channel_count == 6) {
+        channel_spread >>= 1;
+    }
+    state.delay_feedback_cross_gain = channel_spread * state.feedback_gain;
+    state.lowpass_feedback_gain = params.lowpass_amount * 0.949951171875f;
+    state.lowpass_gain = 1.0f - state.lowpass_feedback_gain;
+}
+
+/**
+ * Initialize a new DelayInfo state according to the given parameters.
+ *
+ * @param params     - Input parameters to update the state.
+ * @param state      - State to be updated.
+ * @param workbuffer - Game-supplied memory for the state. (Unused)
+ */
+static void InitializeDelayEffect(const DelayInfo::ParameterVersion1& params,
+                                  DelayInfo::State& state,
+                                  [[maybe_unused]] const CpuAddr workbuffer) {
+    state = {};
+
+    for (u32 channel = 0; channel < params.channel_count; channel++) {
+        Common::FixedPoint<32, 32> sample_count_max{0.064f};
+        sample_count_max *= params.sample_rate.to_int_floor() * params.delay_time_max;
+
+        Common::FixedPoint<18, 14> delay_time{params.delay_time};
+        delay_time *= params.sample_rate / 1000;
+        Common::FixedPoint<32, 32> sample_count{delay_time};
+
+        if (sample_count > sample_count_max) {
+            sample_count = sample_count_max;
+        }
+
+        state.delay_lines[channel].sample_count_max = sample_count_max.to_int_floor();
+        state.delay_lines[channel].sample_count = sample_count.to_int_floor();
+        state.delay_lines[channel].buffer.resize(state.delay_lines[channel].sample_count, 0);
+        if (state.delay_lines[channel].buffer.size() == 0) {
+            state.delay_lines[channel].buffer.push_back(0);
+        }
+        state.delay_lines[channel].buffer_pos = 0;
+        state.delay_lines[channel].decay_rate = 1.0f;
+    }
+
+    SetDelayEffectParameter(params, state);
+}
+
+/**
+ * Delay effect impl, according to the parameters and current state, on the input mix buffers,
+ * saving the results to the output mix buffers.
+ *
+ * @tparam NumChannels - Number of channels to process. 1-6.
+ * @param params       - Input parameters to use.
+ * @param state        - State to use, must be initialized (see InitializeDelayEffect).
+ * @param inputs       - Input mix buffers to performan the delay on.
+ * @param outputs      - Output mix buffers to receive the delayed samples.
+ * @param sample_count - Number of samples to process.
+ */
+template <size_t NumChannels>
+static void ApplyDelay(const DelayInfo::ParameterVersion1& params, DelayInfo::State& state,
+                       std::vector<std::span<const s32>>& inputs,
+                       std::vector<std::span<s32>>& outputs, const u32 sample_count) {
+    for (u32 sample_index = 0; sample_index < sample_count; sample_index++) {
+        std::array<Common::FixedPoint<50, 14>, NumChannels> input_samples{};
+        for (u32 channel = 0; channel < NumChannels; channel++) {
+            input_samples[channel] = inputs[channel][sample_index] * 64;
+        }
+
+        std::array<Common::FixedPoint<50, 14>, NumChannels> delay_samples{};
+        for (u32 channel = 0; channel < NumChannels; channel++) {
+            delay_samples[channel] = state.delay_lines[channel].Read();
+        }
+
+        // clang-format off
+        std::array<std::array<Common::FixedPoint<18, 14>, NumChannels>, NumChannels> matrix{};
+        if constexpr (NumChannels == 1) {
+            matrix = {{
+                {state.feedback_gain},
+            }};
+        } else if constexpr (NumChannels == 2) {
+            matrix = {{
+                {state.delay_feedback_gain, state.delay_feedback_cross_gain},
+                {state.delay_feedback_cross_gain, state.delay_feedback_gain},
+            }};
+        } else if constexpr (NumChannels == 4) {
+            matrix = {{
+                {state.delay_feedback_gain, state.delay_feedback_cross_gain, state.delay_feedback_cross_gain, 0.0f},
+                {state.delay_feedback_cross_gain, state.delay_feedback_gain, 0.0f, state.delay_feedback_cross_gain},
+                {state.delay_feedback_cross_gain, 0.0f, state.delay_feedback_gain, state.delay_feedback_cross_gain},
+                {0.0f, state.delay_feedback_cross_gain, state.delay_feedback_cross_gain, state.delay_feedback_gain},
+            }};
+        } else if constexpr (NumChannels == 6) {
+            matrix = {{
+                {state.delay_feedback_gain, 0.0f, state.delay_feedback_cross_gain, 0.0f, state.delay_feedback_cross_gain, 0.0f},
+                {0.0f, state.delay_feedback_gain, state.delay_feedback_cross_gain, 0.0f, 0.0f, state.delay_feedback_cross_gain},
+                {state.delay_feedback_cross_gain, state.delay_feedback_cross_gain, state.delay_feedback_gain, 0.0f, 0.0f, 0.0f},
+                {0.0f, 0.0f, 0.0f, params.feedback_gain, 0.0f, 0.0f},
+                {state.delay_feedback_cross_gain, 0.0f, 0.0f, 0.0f, state.delay_feedback_gain, state.delay_feedback_cross_gain},
+                {0.0f, state.delay_feedback_cross_gain, 0.0f, 0.0f, state.delay_feedback_cross_gain, state.delay_feedback_gain},
+            }};
+        }
+        // clang-format on
+
+        std::array<Common::FixedPoint<50, 14>, NumChannels> gained_samples{};
+        for (u32 channel = 0; channel < NumChannels; channel++) {
+            Common::FixedPoint<50, 14> delay{};
+            for (u32 j = 0; j < NumChannels; j++) {
+                delay += delay_samples[j] * matrix[j][channel];
+            }
+            gained_samples[channel] = input_samples[channel] * params.in_gain + delay;
+        }
+
+        for (u32 channel = 0; channel < NumChannels; channel++) {
+            state.lowpass_z[channel] = gained_samples[channel] * state.lowpass_gain +
+                                       state.lowpass_z[channel] * state.lowpass_feedback_gain;
+            state.delay_lines[channel].Write(state.lowpass_z[channel]);
+        }
+
+        for (u32 channel = 0; channel < NumChannels; channel++) {
+            outputs[channel][sample_index] = (input_samples[channel] * params.dry_gain +
+                                              delay_samples[channel] * params.wet_gain)
+                                                 .to_int_floor() /
+                                             64;
+        }
+    }
+}
+
+/**
+ * Apply a delay effect if enabled, according to the parameters and current state, on the input mix
+ * buffers, saving the results to the output mix buffers.
+ *
+ * @param params       - Input parameters to use.
+ * @param state        - State to use, must be initialized (see InitializeDelayEffect).
+ * @param enabled      - If enabled, delay will be applied, otherwise input is copied to output.
+ * @param inputs       - Input mix buffers to performan the delay on.
+ * @param outputs      - Output mix buffers to receive the delayed samples.
+ * @param sample_count - Number of samples to process.
+ */
+static void ApplyDelayEffect(const DelayInfo::ParameterVersion1& params, DelayInfo::State& state,
+                             const bool enabled, std::vector<std::span<const s32>>& inputs,
+                             std::vector<std::span<s32>>& outputs, const u32 sample_count) {
+
+    if (!IsChannelCountValid(params.channel_count)) {
+        LOG_ERROR(Service_Audio, "Invalid delay channels {}", params.channel_count);
+        return;
+    }
+
+    if (enabled) {
+        switch (params.channel_count) {
+        case 1:
+            ApplyDelay<1>(params, state, inputs, outputs, sample_count);
+            break;
+        case 2:
+            ApplyDelay<2>(params, state, inputs, outputs, sample_count);
+            break;
+        case 4:
+            ApplyDelay<4>(params, state, inputs, outputs, sample_count);
+            break;
+        case 6:
+            ApplyDelay<6>(params, state, inputs, outputs, sample_count);
+            break;
+        default:
+            for (u32 channel = 0; channel < params.channel_count; channel++) {
+                if (inputs[channel].data() != outputs[channel].data()) {
+                    std::memcpy(outputs[channel].data(), inputs[channel].data(),
+                                sample_count * sizeof(s32));
+                }
+            }
+            break;
+        }
+    } else {
+        for (u32 channel = 0; channel < params.channel_count; channel++) {
+            if (inputs[channel].data() != outputs[channel].data()) {
+                std::memcpy(outputs[channel].data(), inputs[channel].data(),
+                            sample_count * sizeof(s32));
+            }
+        }
+    }
+}
+
+void DelayCommand::Dump([[maybe_unused]] const ADSP::CommandListProcessor& processor,
+                        std::string& string) {
+    string += fmt::format("DelayCommand\n\tenabled {} \n\tinputs: ", effect_enabled);
+    for (u32 i = 0; i < MaxChannels; i++) {
+        string += fmt::format("{:02X}, ", inputs[i]);
+    }
+    string += "\n\toutputs: ";
+    for (u32 i = 0; i < MaxChannels; i++) {
+        string += fmt::format("{:02X}, ", outputs[i]);
+    }
+    string += "\n";
+}
+
+void DelayCommand::Process(const ADSP::CommandListProcessor& processor) {
+    std::vector<std::span<const s32>> input_buffers(parameter.channel_count);
+    std::vector<std::span<s32>> output_buffers(parameter.channel_count);
+
+    for (s16 i = 0; i < parameter.channel_count; i++) {
+        input_buffers[i] = processor.mix_buffers.subspan(inputs[i] * processor.sample_count,
+                                                         processor.sample_count);
+        output_buffers[i] = processor.mix_buffers.subspan(outputs[i] * processor.sample_count,
+                                                          processor.sample_count);
+    }
+
+    auto state_{reinterpret_cast<DelayInfo::State*>(state)};
+
+    if (effect_enabled) {
+        if (parameter.state == DelayInfo::ParameterState::Updating) {
+            SetDelayEffectParameter(parameter, *state_);
+        } else if (parameter.state == DelayInfo::ParameterState::Initialized) {
+            InitializeDelayEffect(parameter, *state_, workbuffer);
+        }
+    }
+    ApplyDelayEffect(parameter, *state_, effect_enabled, input_buffers, output_buffers,
+                     processor.sample_count);
+}
+
+bool DelayCommand::Verify(const ADSP::CommandListProcessor& processor) {
+    return true;
+}
+
+} // namespace AudioCore::AudioRenderer