85 lines
2.2 KiB
C++
85 lines
2.2 KiB
C++
//
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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 <sys/time.h>
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#include <unistd.h>
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#include <assert.h>
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#include "AudioOutputAudioUnit.h"
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#include "../../logging.h"
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#include "AudioUnitIO.h"
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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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AudioOutputAudioUnit::AudioOutputAudioUnit(std::string deviceID, AudioUnitIO* io){
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isPlaying=false;
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remainingDataSize=0;
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this->io=io;
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#if TARGET_OS_OSX
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io->SetCurrentDevice(false, deviceID);
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#endif
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}
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AudioOutputAudioUnit::~AudioOutputAudioUnit(){
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}
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void AudioOutputAudioUnit::Start(){
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isPlaying=true;
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io->EnableOutput(true);
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}
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void AudioOutputAudioUnit::Stop(){
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isPlaying=false;
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io->EnableOutput(false);
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}
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bool AudioOutputAudioUnit::IsPlaying(){
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return isPlaying;
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}
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void AudioOutputAudioUnit::HandleBufferCallback(AudioBufferList *ioData){
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int i;
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for(i=0;i<ioData->mNumberBuffers;i++){
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AudioBuffer buf=ioData->mBuffers[i];
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if(!isPlaying){
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memset(buf.mData, 0, buf.mDataByteSize);
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return;
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}
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#if TARGET_OS_OSX
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unsigned int k;
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while(remainingDataSize<buf.mDataByteSize/2){
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assert(remainingDataSize+BUFFER_SIZE*2<sizeof(remainingData));
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InvokeCallback(remainingData+remainingDataSize, BUFFER_SIZE*2);
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remainingDataSize+=BUFFER_SIZE*2;
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}
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float* dst=reinterpret_cast<float*>(buf.mData);
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int16_t* src=reinterpret_cast<int16_t*>(remainingData);
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for(k=0;k<buf.mDataByteSize/4;k++){
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dst[k]=src[k]/(float)INT16_MAX;
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}
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remainingDataSize-=buf.mDataByteSize/2;
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memmove(remainingData, remainingData+buf.mDataByteSize/2, remainingDataSize);
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#else
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while(remainingDataSize<buf.mDataByteSize){
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assert(remainingDataSize+BUFFER_SIZE*2<sizeof(remainingData));
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InvokeCallback(remainingData+remainingDataSize, BUFFER_SIZE*2);
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remainingDataSize+=BUFFER_SIZE*2;
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}
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memcpy(buf.mData, remainingData, buf.mDataByteSize);
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remainingDataSize-=buf.mDataByteSize;
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memmove(remainingData, remainingData+buf.mDataByteSize, remainingDataSize);
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#endif
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}
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}
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#if TARGET_OS_OSX
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void AudioOutputAudioUnit::SetCurrentDevice(std::string deviceID){
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io->SetCurrentDevice(false, deviceID);
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}
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#endif
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