Although I never needed to try it, at some point in the past, I believe this
was possible (at least I’ve read posts about it. For example,
http://bit.ly/1xhJ2vF). Somewhere in the last couple of revs of MacOS, this
stopped working, it seems. So, is it possible to stream to multiple sources
simultaneously, in a supported fashion? Here is some code I’ve tried. Sound
only comes from the device listed first in the array:
OSStatus err = 0;
UInt32 size = sizeof(UInt32);
SSAudioSource * targetSource = airplayDevice.airplaySources;
AudioDeviceID airPlayDeviceID = targetSource.deviceID;
SSAudioSource * source1 = airplayDevice.airplaySources[0];
SSAudioSource * source2 = airplayDevice.airplaySources[1];
SSAudioSource * source3 = airplayDevice.airplaySources[2];
AudioDeviceID alldevices[] = {source3.sourceID, source2.sourceID,
source1.sourceID}; // only source3 will play
AudioObjectPropertyAddress addr;
addr.mSelector = kAudioDevicePropertyDataSource;
addr.mScope = kAudioDevicePropertyScopeOutput;
addr.mElement = kAudioObjectPropertyElementMaster;
// Set the 'AirPlay' device to point to all of its sources...
err = AudioObjectSetPropertyData(airPlayDeviceID, &addr, 0, nil, size,
alldevices);
AudioObjectPropertyAddress audioDevicesAddress = {
kAudioHardwarePropertyDefaultOutputDevice,
kAudioObjectPropertyScopeGlobal,
kAudioObjectPropertyElementMaster
};
// ...now set the system output to point at the 'AirPlay' device
err = AudioObjectSetPropertyData(kAudioObjectSystemObject,
&audioDevicesAddress, 0, nil, size, &airPlayDeviceID);
Any info greatly appreciated.
_______________________________________________
Do not post admin requests to the list. They will be ignored.
Coreaudio-api mailing list ([email protected])
Help/Unsubscribe/Update your Subscription:
https://lists.apple.com/mailman/options/coreaudio-api/archive%40mail-archive.com
This email sent to [email protected]
