OSStatus CAPlayThrough::SetInputDeviceAsCurrent(AudioDeviceID in)
{
UInt32 size = sizeof(AudioDeviceID);
OSStatus err = noErr;
if(in == kAudioDeviceUnknown) //get the default input device if device is unknown
{
err = AudioHardwareGetProperty(kAudioHardwarePropertyDefaultInputDevice,
&size,
&in);
checkErr(err);
}
mInputDevice.Init(in, true);
//Set the Current Device to the AUHAL.
//this should be done only after IO has been enabled on the AUHAL.
err = AudioUnitSetProperty(mInputUnit,
kAudioOutputUnitProperty_CurrentDevice,
kAudioUnitScope_Global,
0,
&mInputDevice.mID,
sizeof(mInputDevice.mID));
checkErr(err);
return err;
}
OSStatus CAPlayThrough::SetOutputDeviceAsCurrent(AudioDeviceID out)
{
UInt32 size = sizeof(AudioDeviceID);;
OSStatus err = noErr;
// UInt32 propsize = sizeof(Float32);
//AudioObjectPropertyScope theScope = mIsInput ? kAudioDevicePropertyScopeInput : kAudioDevicePropertyScopeOutput;
AudioObjectPropertyAddress theAddress = { kAudioHardwarePropertyDefaultOutputDevice,
kAudioObjectPropertyScopeGlobal,
kAudioObjectPropertyElementMaster };
if(out == kAudioDeviceUnknown) //Retrieve the default output device
{
err = AudioObjectGetPropertyData(kAudioObjectSystemObject, &theAddress, 0, NULL, &size, &out);
checkErr(err);
}
mOutputDevice.Init(out, false);
//Set the Current Device to the Default Output Unit.
err = AudioUnitSetProperty(mOutputUnit,
kAudioOutputUnitProperty_CurrentDevice,
kAudioUnitScope_Global,
0,
&mOutputDevice.mID,
sizeof(mOutputDevice.mID));
return err;
}
OSStatus CAPlayThrough::SetOutputDeviceAsCurrent(AudioDeviceID out)
{
UInt32 size = sizeof(AudioDeviceID);;
OSStatus err = noErr;
if(out == kAudioDeviceUnknown) //Retrieve the default output device
{
err = AudioHardwareGetProperty(kAudioHardwarePropertyDefaultOutputDevice,
&size,
&out);
}
mOutputDevice.Init(out, false);
checkErr(err);
//Set the Current Device to the Default Output Unit.
err = AudioUnitSetProperty(mOutputUnit,
kAudioOutputUnitProperty_CurrentDevice,
kAudioUnitScope_Global,
0,
&mOutputDevice.mID,
sizeof(mOutputDevice.mID));
return err;
}
