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