void CAHALAudioDevice::GetAvailableDataSources(AudioObjectPropertyScope inScope, UInt32 inChannel, UInt32& ioNumberSources, UInt32* outSources) const
{
CAPropertyAddress theAddress(kAudioDevicePropertyDataSources, inScope, inChannel);
UInt32 theNumberSources = std::min(GetNumberAvailableDataSources(inScope, inChannel), ioNumberSources);
UInt32 theSize = theNumberSources * SizeOf32(UInt32);
GetPropertyData(theAddress, 0, NULL, theSize, outSources);
ioNumberSources = theSize / SizeOf32(UInt32);
}
void CAAudioHardwareStream::GetAvailableDataSources(UInt32& ioNumberSources, UInt32* outSources) const
{
UInt32 theNumberSources = std::min(GetNumberAvailableDataSources(), ioNumberSources);
UInt32 theSize = theNumberSources * sizeof(UInt32);
GetPropertyData(0, kAudioDevicePropertyDataSources, theSize, outSources);
ioNumberSources = theSize / sizeof(UInt32);
UInt32* theFirstItem = &(outSources[0]);
UInt32* theLastItem = theFirstItem + ioNumberSources;
std::sort(theFirstItem, theLastItem);
}
UInt32 CAAudioHardwareStream::GetAvailableDataSourceByIndex(UInt32 inIndex) const
{
AudioStreamID theAnswer = 0;
UInt32 theNumberSources = GetNumberAvailableDataSources();
if((theNumberSources > 0) && (inIndex < theNumberSources))
{
CAAutoArrayDelete<UInt32> theSourceList(theNumberSources);
GetAvailableDataSources(theNumberSources, theSourceList);
theAnswer = theSourceList[inIndex];
}
return theAnswer;
}
UInt32 CAHALAudioDevice::GetAvailableDataSourceByIndex(AudioObjectPropertyScope inScope, UInt32 inChannel, UInt32 inIndex) const
{
AudioStreamID theAnswer = 0;
UInt32 theNumberSources = GetNumberAvailableDataSources(inScope, inChannel);
if((theNumberSources > 0) && (inIndex < theNumberSources))
{
CAAutoArrayDelete<UInt32> theSourceList(theNumberSources);
GetAvailableDataSources(inScope, inChannel, theNumberSources, theSourceList);
theAnswer = theSourceList[inIndex];
}
return theAnswer;
}
