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Set the hardware sample rate first. There seems to be an issue with setting the stream format's sample rate and then the device's sample rate before initializing the AudioUnit. Once initialized, it handles device format changes. I'm not sure why it doesn't before initialization.

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This commit is contained in:
Steve Checkoway
2007-03-24 03:29:01 +00:00
parent fef107f778
commit ffc4fb00bd
1 changed files with 18 additions and 18 deletions
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stepmania/src/arch/Sound/RageSoundDriver_AU.cpp
+18 -18
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@@ -99,6 +99,24 @@ RString RageSoundDriver_AU::Init()
if( streamFormat.mSampleRate <= 0 )
streamFormat.mSampleRate = 44100.0;
m_iSampleRate = int( streamFormat.mSampleRate );
// Try to set the hardware sample rate.
{
AudioDeviceID OutputDevice;
UInt32 size = sizeof( AudioDeviceID );
if( (error = AudioUnitGetProperty(m_OutputUnit, kAudioOutputUnitProperty_CurrentDevice,
kAudioUnitScope_Global, 0, &OutputDevice, &size)) )
{
LOG->Warn( WERROR("No output device", error) );
}
else if( (error = AudioDeviceSetProperty(OutputDevice, NULL, 0, false, kAudioDevicePropertyNominalSampleRate,
sizeof(Float64), &streamFormat.mSampleRate)) )
{
LOG->Warn( WERROR("Couldn't set the device's sample rate", error) );
}
}
error = AudioUnitSetProperty( m_OutputUnit,
kAudioUnitProperty_StreamFormat,
@@ -118,25 +136,7 @@ RString RageSoundDriver_AU::Init()
sizeof(renderQuality) );
if( error != noErr )
LOG->Warn( WERROR("Failed to set the maximum render quality", error) );
// Try to set the hardware sample rate.
{
AudioDeviceID OutputDevice;
UInt32 size = sizeof( AudioDeviceID );
if( (error = AudioUnitGetProperty(m_OutputUnit, kAudioOutputUnitProperty_CurrentDevice,
kAudioUnitScope_Global, 0, &OutputDevice, &size)) )
{
LOG->Warn( WERROR("No output device", error) );
}
else if( (error = AudioDeviceSetProperty(OutputDevice, NULL, 0, false, kAudioDevicePropertyNominalSampleRate,
sizeof(Float64), &streamFormat.mSampleRate)) )
{
LOG->Warn( WERROR("Couldn't set the device's sample rate", error) );
}
}
// Initialize the AU.
if( (error = AudioUnitInitialize(m_OutputUnit)) )
return ERROR( "Could not initialize the AudioUnit", error );