83 lines
2.1 KiB
C++
83 lines
2.1 KiB
C++
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//
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// libtgvoip is free and unencumbered public domain software.
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// For more information, see http://unlicense.org or the UNLICENSE file
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// you should have received with this source code distribution.
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//
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#include "AudioInputAudioUnit.h"
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#include "../../logging.h"
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#include "AudioUnitIO.h"
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#include <cassert>
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#include <cstdio>
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#include <cstdlib>
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#define BUFFER_SIZE 960
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using namespace tgvoip;
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using namespace tgvoip::audio;
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AudioInputAudioUnit::AudioInputAudioUnit(std::string deviceID, AudioUnitIO* io)
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{
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remainingDataSize = 0;
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isRecording = false;
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this->io = io;
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#if TARGET_OS_OSX
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io->SetCurrentDevice(true, deviceID);
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#endif
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}
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AudioInputAudioUnit::~AudioInputAudioUnit()
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{
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}
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void AudioInputAudioUnit::Start()
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{
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isRecording = true;
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io->EnableInput(true);
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}
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void AudioInputAudioUnit::Stop()
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{
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isRecording = false;
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io->EnableInput(false);
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}
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void AudioInputAudioUnit::HandleBufferCallback(AudioBufferList* ioData)
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{
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int i;
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for (i = 0; i < ioData->mNumberBuffers; i++)
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{
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AudioBuffer buf = ioData->mBuffers[i];
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#if TARGET_OS_OSX
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assert(remainingDataSize + buf.mDataByteSize / 2 < 10240);
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float* src = reinterpret_cast<float*>(buf.mData);
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std::int16_t* dst = reinterpret_cast<std::int16_t*>(remainingData + remainingDataSize);
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for (int j = 0; j < buf.mDataByteSize / 4; j++)
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{
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dst[j] = (std::int16_t)(src[j] * INT16_MAX);
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}
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remainingDataSize += buf.mDataByteSize / 2;
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#else
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assert(remainingDataSize + buf.mDataByteSize < 10240);
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std::memcpy(remainingData + remainingDataSize, buf.mData, buf.mDataByteSize);
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remainingDataSize += buf.mDataByteSize;
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#endif
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while (remainingDataSize >= BUFFER_SIZE * 2)
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{
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InvokeCallback(remainingData, BUFFER_SIZE * 2);
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remainingDataSize -= BUFFER_SIZE * 2;
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if (remainingDataSize > 0)
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{
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memmove(remainingData, remainingData + (BUFFER_SIZE * 2), remainingDataSize);
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}
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}
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}
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}
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#if TARGET_OS_OSX
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void AudioInputAudioUnit::SetCurrentDevice(std::string deviceID)
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{
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io->SetCurrentDevice(true, deviceID);
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}
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#endif
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