//***********************************************************************************************
void CoreAudioRenderer::Mute(bool bMute)
{
if (!m_bIsAllocated) return;
if (bMute)
SetCurrentVolume(GetMinimumVolume());
else
SetCurrentVolume(m_nCurrentVolume);
}
bool CCoreAudioGraph::Open(ICoreAudioSource *pSource, AEAudioFormat &format, bool allowMixing, float initVolume)
{
OSStatus ret;
AudioStreamBasicDescription inputFormat;
AudioStreamBasicDescription outputFormat;
m_allowMixing = allowMixing;
ret = NewAUGraph(&m_audioGraph);
if (ret)
{
CLog::Log(LOGERROR, "CCoreAudioGraph::Open: Error create audio grpah. Error = %s", GetError(ret).c_str());
return false;
}
ret = AUGraphOpen(m_audioGraph);
if (ret)
{
CLog::Log(LOGERROR, "CCoreAudioGraph::Open: Error open audio grpah. Error = %s", GetError(ret).c_str());
return false;
}
// get output unit
if (m_audioUnit)
{
CLog::Log(LOGERROR, "CCoreAudioGraph::Open: Error audio unit already open. double call ?");
return false;
}
m_audioUnit = new CAUOutputDevice();
if (!m_audioUnit->Open(m_audioGraph, kAudioUnitType_Output, kAudioUnitSubType_RemoteIO, kAudioUnitManufacturer_Apple))
return false;
if (!m_audioUnit->EnableInputOuput())
return false;
m_audioUnit->GetFormatDesc(format, &inputFormat);
//if(!allowMixing)
//{
if (!m_audioUnit->SetFormat(&inputFormat, kAudioUnitScope_Input, kOutputBus))
return false;
if (!m_audioUnit->SetFormat(&inputFormat, kAudioUnitScope_Output, kInputBus))
return false;
//}
if (allowMixing)
{
// get mixer unit
if (m_mixerUnit)
{
CLog::Log(LOGERROR, "CCoreAudioGraph::Open: Error mixer unit already open. double call ?");
return false;
}
m_mixerUnit = new CAUMultiChannelMixer();
if (!m_mixerUnit->Open(m_audioGraph, kAudioUnitType_Mixer, kAudioUnitSubType_MultiChannelMixer, kAudioUnitManufacturer_Apple))
return false;
// set number of input buses
if (!m_mixerUnit->SetInputBusCount(MAX_CONNECTION_LIMIT))
return false;
//if(!m_mixerUnit->SetFormat(&fmt, kAudioUnitScope_Output, kOutputBus))
// return false;
m_mixerUnit->SetBus(0);
if (!m_audioUnit->GetFormat(&outputFormat, kAudioUnitScope_Input, kOutputBus))
return false;
/*
if(!m_mixerUnit->SetInputBusFormat(MAX_CONNECTION_LIMIT, &outputFormat))
return false;
*/
ret = AUGraphConnectNodeInput(m_audioGraph, m_mixerUnit->GetNode(), 0, m_audioUnit->GetNode(), 0);
if (ret)
{
CLog::Log(LOGERROR, "CCoreAudioGraph::Open: Error connecting m_m_mixerNode. Error = %s", GetError(ret).c_str());
return false;
}
// get output unit
if (m_inputUnit)
{
CLog::Log(LOGERROR, "CCoreAudioGraph::Open: Error mixer unit already open. double call ?");
return false;
}
m_inputUnit = new CAUOutputDevice();
if (!m_inputUnit->Open(m_audioGraph, kAudioUnitType_FormatConverter, kAudioUnitSubType_AUConverter, kAudioUnitManufacturer_Apple))
return false;
if (!m_inputUnit->SetFormat(&inputFormat, kAudioUnitScope_Input, kOutputBus))
return false;
/*
if(!m_inputUnit->SetFormat(&outputFormat, kAudioUnitScope_Output, kOutputBus))
return false;
*/
// configure output unit
int busNumber = GetFreeBus();
ret = AUGraphConnectNodeInput(m_audioGraph, m_inputUnit->GetNode(), 0, m_mixerUnit->GetNode(), busNumber);
if (ret)
{
CLog::Log(LOGERROR, "CCoreAudioGraph::Open: Error connecting m_converterNode. Error = %s", GetError(ret).c_str());
return false;
}
m_inputUnit->SetBus(busNumber);
ret = AUGraphUpdate(m_audioGraph, NULL);
if (ret)
{
CLog::Log(LOGERROR, "CCoreAudioGraph::Open: Error update graph. Error = %s", GetError(ret).c_str());
return false;
}
ret = AUGraphInitialize(m_audioGraph);
if (ret)
{
CLog::Log(LOGERROR, "CCoreAudioGraph::Open: Error initialize graph. Error = %s", GetError(ret).c_str());
return false;
}
// Regenerate audio format and copy format for the Output AU
}
ret = AUGraphUpdate(m_audioGraph, NULL);
if (ret)
{
CLog::Log(LOGERROR, "CCoreAudioGraph::Open: Error update graph. Error = %s", GetError(ret).c_str());
return false;
}
std::string formatString;
AudioStreamBasicDescription inputDesc_end, outputDesc_end;
m_audioUnit->GetFormat(&inputDesc_end, kAudioUnitScope_Input, kOutputBus);
m_audioUnit->GetFormat(&outputDesc_end, kAudioUnitScope_Output, kInputBus);
CLog::Log(LOGINFO, "CCoreAudioGraph::Open: Input Stream Format %s", StreamDescriptionToString(inputDesc_end, formatString));
CLog::Log(LOGINFO, "CCoreAudioGraph::Open: Output Stream Format %s", StreamDescriptionToString(outputDesc_end, formatString));
if (m_mixerUnit)
{
m_mixerUnit->GetFormat(&inputDesc_end, kAudioUnitScope_Input, kOutputBus);
m_mixerUnit->GetFormat(&outputDesc_end, kAudioUnitScope_Output, kOutputBus);
CLog::Log(LOGINFO, "CCoreAudioGraph::Open: Input Stream Format %s", StreamDescriptionToString(inputDesc_end, formatString));
CLog::Log(LOGINFO, "CCoreAudioGraph::Open: Output Stream Format %s", StreamDescriptionToString(outputDesc_end, formatString));
}
if (m_inputUnit)
{
m_inputUnit->GetFormat(&inputDesc_end, kAudioUnitScope_Input, kOutputBus);
m_inputUnit->GetFormat(&outputDesc_end, kAudioUnitScope_Output, kOutputBus);
CLog::Log(LOGINFO, "CCoreAudioGraph::Open: Input Stream Format %s", StreamDescriptionToString(inputDesc_end, formatString));
CLog::Log(LOGINFO, "CCoreAudioGraph::Open: Output Stream Format %s", StreamDescriptionToString(outputDesc_end, formatString));
}
ret = AUGraphInitialize(m_audioGraph);
if (ret)
{
CLog::Log(LOGERROR, "CCoreAudioGraph::Open: Error initialize graph. Error = %s", GetError(ret).c_str());
return false;
}
SetCurrentVolume(initVolume);
UInt32 bufferFrames = m_audioUnit->GetBufferFrameSize();
m_audioUnit->SetMaxFramesPerSlice(bufferFrames);
if (m_inputUnit)
m_inputUnit->SetMaxFramesPerSlice(bufferFrames);
SetInputSource(pSource);
ShowGraph();
return Start();
}
