[audio] add splitter_size (#3477)

Thanks to: https://git.ryujinx.app/ryubing/ryujinx/-/merge_requests/257
Credits to Coxxs and his friend.

Reviewed-on: https://git.eden-emu.dev/eden-emu/eden/pulls/3477
Reviewed-by: MaranBr <maranbr@eden-emu.dev>
Reviewed-by: DraVee <dravee@eden-emu.dev>
Reviewed-by: CamilleLaVey <camillelavey99@gmail.com>
Co-authored-by: Maufeat <sahyno1996@gmail.com>
Co-committed-by: Maufeat <sahyno1996@gmail.com>

src/audio_core/renderer/behavior/info_updater.cpp

@@ -1,4 +1,4 @@
-// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
+// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
 // SPDX-License-Identifier: GPL-3.0-or-later
 
 // SPDX-FileCopyrightText: Copyright 2022 yuzu Emulator Project
@@ -616,12 +616,11 @@ Result InfoUpdater::UpdateErrorInfo(const BehaviorInfo& behaviour_) {
 }
 
 Result InfoUpdater::UpdateSplitterInfo(SplitterContext& splitter_context) {
-    u32 consumed_size{0};
-    if (!splitter_context.Update(input, consumed_size)) {
+    if (!splitter_context.Update(input)) {
         return Service::Audio::ResultInvalidUpdateInfo;
     }
 
-    input += consumed_size;
+    input += in_header->splitter_size;
 
     return ResultSuccess;
 }

src/audio_core/renderer/behavior/info_updater.h

@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 // SPDX-FileCopyrightText: Copyright 2022 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
@@ -35,7 +38,7 @@ class InfoUpdater {
         /* 0x18 */ u32 mix_size{};
         /* 0x1C */ u32 sinks_size{};
         /* 0x20 */ u32 performance_buffer_size{};
-        /* 0x24 */ char unk24[4];
+        /* 0x24 */ u32 splitter_size{};
         /* 0x28 */ u32 render_info_size{};
         /* 0x2C */ char unk2C[0x10];
         /* 0x3C */ u32 size{sizeof(UpdateDataHeader)};

src/audio_core/renderer/splitter/splitter_context.cpp

@@ -1,4 +1,4 @@
-// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
+// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
 // SPDX-License-Identifier: GPL-3.0-or-later
 
 // SPDX-FileCopyrightText: Copyright 2022 yuzu Emulator Project
@@ -93,16 +93,14 @@ bool SplitterContext::Initialize(const BehaviorInfo& behavior,
     return true;
 }
 
-bool SplitterContext::Update(const u8* input, u32& consumed_size) {
+bool SplitterContext::Update(const u8* input) {
     auto in_params{reinterpret_cast<const InParameterHeader*>(input)};
 
     if (destinations_count == 0 || info_count == 0) {
-        consumed_size = 0;
         return true;
     }
 
     if (in_params->magic != GetSplitterInParamHeaderMagic()) {
-        consumed_size = 0;
         return false;
     }
 
@@ -113,8 +111,6 @@ bool SplitterContext::Update(const u8* input, u32& consumed_size) {
     u32 offset{sizeof(InParameterHeader)};
     offset = UpdateInfo(input, offset, in_params->info_count);
     offset = UpdateData(input, offset, in_params->destination_count);
-
-    consumed_size = Common::AlignUp(offset, 0x10);
     return true;
 }
 

src/audio_core/renderer/splitter/splitter_context.h

@@ -1,4 +1,4 @@
-// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
+// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
 // SPDX-License-Identifier: GPL-3.0-or-later
 
 // SPDX-FileCopyrightText: Copyright 2022 yuzu Emulator Project
@@ -104,9 +104,8 @@ public:
      *
      * @param input         - Input buffer with the new info,
      *                        expected to point to a InParameterHeader.
-     * @param consumed_size - Output with the number of bytes consumed from input.
      */
-    bool Update(const u8* input, u32& consumed_size);
+    bool Update(const u8* input);
 
     /**
      * Update the splitters.