eeva/jamulus
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

take care of problem if input/output buffer sizes cannot be set to a common value, some cleanup

Browse Source
This commit is contained in:
Volker Fischer 2010-03-13 11:04:29 +00:00
parent c4ae143efa
commit db636f9d96
2 changed files with 55 additions and 45 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

98
mac/sound.cpp
View File

@ -29,7 +29,7 @@
void CSound::OpenCoreAudio()
{
UInt32 size;
ComponentResult err;
ComponentResult err;
// open the default unit
ComponentDescription desc;
@ -45,15 +45,15 @@ void CSound::OpenCoreAudio()
throw CGenErr ( tr ( "No CoreAudio next component found" ) );
}
if ( OpenAComponent ( comp, &audioInputUnit ) )
{
throw CGenErr ( tr ( "CoreAudio creating input component instance failed" ) );
}
if ( OpenAComponent ( comp, &audioInputUnit ) )
{
throw CGenErr ( tr ( "CoreAudio creating input component instance failed" ) );
}
if ( OpenAComponent ( comp, &audioOutputUnit ) )
{
throw CGenErr ( tr ( "CoreAudio creating output component instance failed" ) );
}
if ( OpenAComponent ( comp, &audioOutputUnit ) )
{
throw CGenErr ( tr ( "CoreAudio creating output component instance failed" ) );
}
// we enable input and disable output for input component
UInt32 enableIO = 1;
@ -123,7 +123,7 @@ void CSound::OpenCoreAudio()
sizeof ( audioOutputDevice ) ) )
{
throw CGenErr ( tr ( "CoreAudio output AudioUnitSetProperty call failed" ) );
}
}
// set up a callback function for new output data
AURenderCallbackStruct output;
@ -173,17 +173,17 @@ void CSound::OpenCoreAudio()
throw CGenErr ( tr ( "CoreAudio stream format set property failed" ) );
}
// check input device sample rate
// check input device sample rate
size = sizeof ( Float64 );
Float64 inputSampleRate;
AudioUnitGetProperty ( audioInputUnit,
kAudioUnitProperty_SampleRate,
kAudioUnitProperty_SampleRate,
kAudioUnitScope_Input,
1,
&inputSampleRate,
&size );
&inputSampleRate,
&size );
if ( static_cast<int> ( inputSampleRate ) != SYSTEM_SAMPLE_RATE )
if ( static_cast<int> ( inputSampleRate ) != SYSTEM_SAMPLE_RATE )
{
throw CGenErr ( QString ( tr ( "Current system audio input device sample "
"rate of %1 Hz is not supported. Please open the Audio-MIDI-Setup in "
@ -191,17 +191,17 @@ void CSound::OpenCoreAudio()
static_cast<int> ( inputSampleRate ) ).arg ( SYSTEM_SAMPLE_RATE ) );
}
// check output device sample rate
// check output device sample rate
size = sizeof ( Float64 );
Float64 outputSampleRate;
AudioUnitGetProperty ( audioOutputUnit,
kAudioUnitProperty_SampleRate,
kAudioUnitScope_Output,
0,
&outputSampleRate,
&size );
kAudioUnitProperty_SampleRate,
kAudioUnitScope_Output,
0,
&outputSampleRate,
&size );
if ( static_cast<int> ( outputSampleRate ) != SYSTEM_SAMPLE_RATE )
if ( static_cast<int> ( outputSampleRate ) != SYSTEM_SAMPLE_RATE )
{
throw CGenErr ( QString ( tr ( "Current system audio output device sample "
"rate of %1 Hz is not supported. Please open the Audio-MIDI-Setup in "
@ -219,15 +219,15 @@ void CSound::CloseCoreAudio()
// clean up "gOutputUnit"
AudioUnitUninitialize ( audioInputUnit );
AudioUnitUninitialize ( audioOutputUnit );
CloseComponent ( audioInputUnit );
CloseComponent ( audioOutputUnit );
CloseComponent ( audioInputUnit );
CloseComponent ( audioOutputUnit );
}
void CSound::Start()
{
// start the rendering
AudioOutputUnitStart ( audioInputUnit );
AudioOutputUnitStart ( audioOutputUnit );
// start the rendering
AudioOutputUnitStart ( audioInputUnit );
AudioOutputUnitStart ( audioOutputUnit );
// call base class
CSoundBase::Start();
@ -236,8 +236,8 @@ void CSound::Start()
void CSound::Stop()
{
// stop the audio stream
AudioOutputUnitStop ( audioInputUnit );
AudioOutputUnitStop ( audioOutputUnit );
AudioOutputUnitStop ( audioInputUnit );
AudioOutputUnitStop ( audioOutputUnit );
// call base class
CSoundBase::Stop();
@ -247,7 +247,11 @@ int CSound::Init ( const int iNewPrefMonoBufferSize )
{
UInt32 iActualMonoBufferSize;
// Error message string: in case buffer sizes on input and output cannot be set to the same value
const QString strErrBufSize = tr ( "The buffer sizes of the current "
"input and output audio device cannot be set to a common value. Please "
"choose other input/output audio devices in your system settings." );
// try to set input buffer size
iActualMonoBufferSize =
SetBufferSize ( audioInputDevice, true, iNewPrefMonoBufferSize );
@ -256,14 +260,20 @@ int CSound::Init ( const int iNewPrefMonoBufferSize )
{
// try to set the input buffer size to the output so that we
// have a matching pair
// TODO check if setting was successful
SetBufferSize ( audioOutputDevice, false, iActualMonoBufferSize );
if ( SetBufferSize ( audioOutputDevice, false, iActualMonoBufferSize ) !=
iActualMonoBufferSize )
{
throw CGenErr ( strErrBufSize );
}
}
else
{
// try to set output buffer size
// TODO check if setting was successful
SetBufferSize ( audioOutputDevice, false, iNewPrefMonoBufferSize );
if ( SetBufferSize ( audioOutputDevice, false, iNewPrefMonoBufferSize ) !=
static_cast<UInt32> ( iNewPrefMonoBufferSize ) )
{
throw CGenErr ( strErrBufSize );
}
}
// store buffer size
@ -271,26 +281,26 @@ int CSound::Init ( const int iNewPrefMonoBufferSize )
// init base class
CSoundBase::Init ( iCoreAudioBufferSizeMono );
// set internal buffer size value and calculate stereo buffer size
iCoreAudioBufferSizeStero = 2 * iCoreAudioBufferSizeMono;
// create memory for intermediate audio buffer
vecsTmpAudioSndCrdStereo.Init ( iCoreAudioBufferSizeStero );
// fill audio unit buffer struct
pBufferList->mNumberBuffers = 1;
pBufferList->mNumberBuffers = 1;
pBufferList->mBuffers[0].mNumberChannels = 2; // stereo
pBufferList->mBuffers[0].mDataByteSize = iCoreAudioBufferSizeMono * 4; // 2 bytes, 2 channels
pBufferList->mBuffers[0].mData = &vecsTmpAudioSndCrdStereo[0];
pBufferList->mBuffers[0].mData = &vecsTmpAudioSndCrdStereo[0];
// initialize unit
if ( AudioUnitInitialize ( audioInputUnit ) )
if ( AudioUnitInitialize ( audioInputUnit ) )
{
throw CGenErr ( tr ( "Initialization of CoreAudio failed" ) );
}
if ( AudioUnitInitialize ( audioOutputUnit ) )
if ( AudioUnitInitialize ( audioOutputUnit ) )
{
throw CGenErr ( tr ( "Initialization of CoreAudio failed" ) );
}
@ -349,20 +359,20 @@ OSStatus CSound::processInput ( void* inRefCon,
return noErr;
}
OSStatus CSound::processOutput ( void* inRefCon,
OSStatus CSound::processOutput ( void* inRefCon,
AudioUnitRenderActionFlags*,
const AudioTimeStamp*,
UInt32,
UInt32,
AudioBufferList* ioData )
AudioBufferList* ioData )
{
CSound* pSound = reinterpret_cast<CSound*> ( inRefCon );
QMutexLocker locker ( &pSound->Mutex );
memcpy ( ioData->mBuffers[0].mData,
&pSound->vecsTmpAudioSndCrdStereo[0],
pSound->pBufferList->mBuffers[0].mDataByteSize);
&pSound->vecsTmpAudioSndCrdStereo[0],
pSound->pBufferList->mBuffers[0].mDataByteSize);
return noErr;
}

2
mac/sound.h
View File

@ -70,7 +70,7 @@ protected:
static OSStatus processOutput ( void* inRefCon,AudioUnitRenderActionFlags*,
const AudioTimeStamp*, UInt32, UInt32,
AudioBufferList* ioData );
AudioBufferList* ioData );
ComponentInstance audioInputUnit;
AudioDeviceID audioInputDevice;