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/*
* Copyright 2021 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 "FormatConverterBox.h"
FormatConverterBox::FormatConverterBox(int32_t numSamples,
oboe::AudioFormat inputFormat,
oboe::AudioFormat outputFormat) {
mInputFormat = inputFormat;
mOutputFormat = outputFormat;
mInputBuffer = std::make_unique<uint8_t[]>(numSamples * sizeof(int32_t));
mOutputBuffer = std::make_unique<uint8_t[]>(numSamples * sizeof(int32_t));
mSource.reset();
switch (mInputFormat) {
case oboe::AudioFormat::I16:
mSource = std::make_unique<oboe::flowgraph::SourceI16>(1);
break;
case oboe::AudioFormat::I24:
mSource = std::make_unique<oboe::flowgraph::SourceI24>(1);
break;
case oboe::AudioFormat::I32:
mSource = std::make_unique<oboe::flowgraph::SourceI32>(1);
break;
case oboe::AudioFormat::Float:
case oboe::AudioFormat::Invalid:
case oboe::AudioFormat::Unspecified:
mSource = std::make_unique<oboe::flowgraph::SourceFloat>(1);
break;
}
mSink.reset();
switch (mOutputFormat) {
case oboe::AudioFormat::I16:
mSink = std::make_unique<oboe::flowgraph::SinkI16>(1);
break;
case oboe::AudioFormat::I24:
mSink = std::make_unique<oboe::flowgraph::SinkI24>(1);
break;
case oboe::AudioFormat::I32:
mSink = std::make_unique<oboe::flowgraph::SinkI32>(1);
break;
case oboe::AudioFormat::Float:
case oboe::AudioFormat::Invalid:
case oboe::AudioFormat::Unspecified:
mSink = std::make_unique<oboe::flowgraph::SinkFloat>(1);
break;
}
if (mSource && mSink) {
mSource->output.connect(&mSink->input);
mSink->pullReset();
}
}
int32_t FormatConverterBox::convertInternalBuffers(int32_t numSamples) {
return convert(getOutputBuffer(), numSamples, getInputBuffer());
}
int32_t FormatConverterBox::convertToInternalOutput(int32_t numSamples, const void *inputBuffer) {
return convert(getOutputBuffer(), numSamples, inputBuffer);
}
int32_t FormatConverterBox::convertFromInternalInput(void *outputBuffer, int32_t numSamples) {
return convert(outputBuffer, numSamples, getInputBuffer());
}
int32_t FormatConverterBox::convert(void *outputBuffer, int32_t numSamples, const void *inputBuffer) {
mSource->setData(inputBuffer, numSamples);
return mSink->read(outputBuffer, numSamples);
}
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