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Core Audio output: Properly apply or remove default device change listener when switching preferences between the 'System Default Device' setting and manually setting the device to the current default

CQTexperiment
Christopher Snowhill 2021-12-26 21:33:28 -08:00
parent 8435416cd7
commit 8e895c88c0
1 changed files with 22 additions and 23 deletions
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45
Audio/Output/OutputCoreAudio.m
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@ -127,9 +127,6 @@ default_device_changed(AudioObjectID inObjectID, UInt32 inNumberAddresses, const
}
if (audioQueue) {
if (outputDeviceID == deviceID)
return noErr;
AudioObjectPropertyAddress defaultDeviceAddress = theAddress;
if (listenerapplied && !defaultDevice) {
@ -137,31 +134,33 @@ default_device_changed(AudioObjectID inObjectID, UInt32 inNumberAddresses, const
listenerapplied = NO;
}
printf("DEVICE: %i\n", deviceID);
outputDeviceID = deviceID;
if (outputDeviceID != deviceID) {
printf("DEVICE: %i\n", deviceID);
outputDeviceID = deviceID;
CFStringRef theDeviceUID;
theAddress.mSelector = kAudioDevicePropertyDeviceUID;
theAddress.mScope = kAudioDevicePropertyScopeOutput;
thePropSize = sizeof(theDeviceUID);
err = AudioObjectGetPropertyData(outputDeviceID, &theAddress, 0, NULL, &thePropSize, &theDeviceUID);
CFStringRef theDeviceUID;
theAddress.mSelector = kAudioDevicePropertyDeviceUID;
theAddress.mScope = kAudioDevicePropertyScopeOutput;
thePropSize = sizeof(theDeviceUID);
err = AudioObjectGetPropertyData(outputDeviceID, &theAddress, 0, NULL, &thePropSize, &theDeviceUID);
if (err) {
DLog(@"Error getting device UID as string");
return err;
}
if (err) {
DLog(@"Error getting device UID as string");
return err;
}
err = AudioQueueStop(audioQueue, true);
if (err) {
DLog(@"Error stopping stream to set device");
err = AudioQueueStop(audioQueue, true);
if (err) {
DLog(@"Error stopping stream to set device");
CFRelease(theDeviceUID);
return err;
}
primed = NO;
err = AudioQueueSetProperty(audioQueue, kAudioQueueProperty_CurrentDevice, &theDeviceUID, sizeof(theDeviceUID));
CFRelease(theDeviceUID);
return err;
if (running)
[self start];
}
primed = NO;
err = AudioQueueSetProperty(audioQueue, kAudioQueueProperty_CurrentDevice, &theDeviceUID, sizeof(theDeviceUID));
CFRelease(theDeviceUID);
if (running)
[self start];
if (!listenerapplied && defaultDevice) {
AudioObjectAddPropertyListener(kAudioObjectSystemObject, &defaultDeviceAddress, default_device_changed, (__bridge void * _Nullable)(self));