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61 lines
2.7 KiB
61 lines
2.7 KiB
/*
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* Copyright 2023 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "common/OboeDebug.h"
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#include "FullDuplexStreamWithConversion.h"
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oboe::Result FullDuplexStreamWithConversion::start() {
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// Determine maximum size that could possibly be called.
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int32_t maxFrames = getOutputStream()->getBufferCapacityInFrames();
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int32_t inputBufferSize = maxFrames * getInputStream()->getChannelCount();
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int32_t outputBufferSize = maxFrames * getOutputStream()->getChannelCount();
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mInputConverter = std::make_unique<FormatConverterBox>(inputBufferSize,
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getInputStream()->getFormat(),
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oboe::AudioFormat::Float);
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mOutputConverter = std::make_unique<FormatConverterBox>(outputBufferSize,
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oboe::AudioFormat::Float,
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getOutputStream()->getFormat());
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return FullDuplexStream::start();
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}
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oboe::ResultWithValue<int32_t> FullDuplexStreamWithConversion::readInput(int32_t numFrames) {
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oboe::ResultWithValue<int32_t> result = getInputStream()->read(
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mInputConverter->getInputBuffer(),
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numFrames,
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0 /* timeout */);
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if (result == oboe::Result::OK) {
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int32_t numSamples = result.value() * getInputStream()->getChannelCount();
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mInputConverter->convertInternalBuffers(numSamples);
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}
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return result;
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}
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oboe::DataCallbackResult FullDuplexStreamWithConversion::onBothStreamsReady(
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const void *inputData,
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int numInputFrames,
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void *outputData,
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int numOutputFrames
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) {
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oboe::DataCallbackResult callbackResult = oboe::DataCallbackResult::Continue;
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callbackResult = onBothStreamsReadyFloat(
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static_cast<const float *>(mInputConverter->getOutputBuffer()),
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numInputFrames,
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static_cast<float *>(mOutputConverter->getInputBuffer()),
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numOutputFrames);
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mOutputConverter->convertFromInternalInput( outputData,
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numOutputFrames * getOutputStream()->getChannelCount());
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return callbackResult;
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}
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