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[Core Audio Output] Add more event listeners 

Sound output format changes should now happen instantaneously instead of
with a delay.

Signed-off-by: Christopher Snowhill <kode54@gmail.com>
swiftingly
Christopher Snowhill 2022-06-16 23:28:25 -07:00
parent 7bc49ccb80
commit 7044a9a852
2 changed files with 81 additions and 17 deletions
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5
Audio/Output/OutputCoreAudio.h
View File

@ -58,8 +58,11 @@ using std::atomic_long;
atomic_long bytesRendered;
atomic_long bytesHdcdSustained;
BOOL listenerapplied;
BOOL defaultdevicelistenerapplied;
BOOL currentdevicelistenerapplied;
BOOL devicealivelistenerapplied;
BOOL observersapplied;
BOOL outputdevicechanged;
float volume;
float eqPreamp;

91
Audio/Output/OutputCoreAudio.m
View File

@ -224,6 +224,23 @@ default_device_changed(AudioObjectID inObjectID, UInt32 inNumberAddresses, const
return [this setOutputDeviceByID:-1];
}
static OSStatus
current_device_listener(AudioObjectID inObjectID, UInt32 inNumberAddresses, const AudioObjectPropertyAddress *inAddresses, void *inUserData) {
OutputCoreAudio *this = (__bridge OutputCoreAudio *)inUserData;
for(UInt32 i = 0; i < inNumberAddresses; ++i) {
switch(inAddresses[i].mSelector) {
case kAudioDevicePropertyDeviceIsAlive:
return [this setOutputDeviceByID:-1];
case kAudioDevicePropertyNominalSampleRate:
case kAudioDevicePropertyStreamFormat:
this->outputdevicechanged = YES;
return noErr;
}
}
return noErr;
}
- (void)observeValueForKeyPath:(NSString *)keyPath ofObject:(id)object change:(NSDictionary *)change context:(void *)context {
if(context != kOutputCoreAudioContext) {
[super observeValueForKeyPath:keyPath ofObject:object change:change context:context];
@ -253,17 +270,16 @@ default_device_changed(AudioObjectID inObjectID, UInt32 inNumberAddresses, const
running = YES;
started = NO;
stopNext = NO;
size_t eventCount = 0;
atomic_store(&bytesRendered, 0);
NSMutableArray *delayedEvents = [[NSMutableArray alloc] init];
BOOL delayedEventsPopped = YES;
while(!stopping) {
if(++eventCount == 48) {
if(outputdevicechanged) {
[self resetIfOutputChanged];
if(restarted) break;
eventCount = 0;
outputdevicechanged = NO;
}
if(restarted) break;
if([outputController shouldReset]) {
@autoreleasepool {
[[outputController buffer] reset];
@ -369,14 +385,29 @@ default_device_changed(AudioObjectID inObjectID, UInt32 inNumberAddresses, const
}
if(_au) {
AudioObjectPropertyAddress defaultDeviceAddress = theAddress;
if(listenerapplied && !defaultDevice) {
AudioObjectRemovePropertyListener(kAudioObjectSystemObject, &defaultDeviceAddress, default_device_changed, (__bridge void *_Nullable)(self));
listenerapplied = NO;
if(defaultdevicelistenerapplied && !defaultDevice) {
/* Already set above
* theAddress.mSelector = kAudioHardwarePropertyDefaultOutputDevice; */
AudioObjectRemovePropertyListener(kAudioObjectSystemObject, &theAddress, default_device_changed, (__bridge void *_Nullable)(self));
defaultdevicelistenerapplied = NO;
}
outputdevicechanged = NO;
if(outputDeviceID != deviceID) {
if(currentdevicelistenerapplied) {
if(devicealivelistenerapplied) {
theAddress.mSelector = kAudioDevicePropertyDeviceIsAlive;
AudioObjectRemovePropertyListener(outputDeviceID, &theAddress, current_device_listener, (__bridge void *_Nullable)(self));
devicealivelistenerapplied = NO;
}
theAddress.mSelector = kAudioDevicePropertyStreamFormat;
AudioObjectRemovePropertyListener(outputDeviceID, &theAddress, current_device_listener, (__bridge void *_Nullable)(self));
theAddress.mSelector = kAudioDevicePropertyNominalSampleRate;
AudioObjectRemovePropertyListener(outputDeviceID, &theAddress, current_device_listener, (__bridge void *_Nullable)(self));
currentdevicelistenerapplied = NO;
}
DLog(@"Device: %i\n", deviceID);
outputDeviceID = deviceID;
@ -385,11 +416,27 @@ default_device_changed(AudioObjectID inObjectID, UInt32 inNumberAddresses, const
if(nserr != nil) {
return (OSErr)[nserr code];
}
outputdevicechanged = YES;
}
if(!listenerapplied && defaultDevice) {
AudioObjectAddPropertyListener(kAudioObjectSystemObject, &defaultDeviceAddress, default_device_changed, (__bridge void *_Nullable)(self));
listenerapplied = YES;
if(!currentdevicelistenerapplied) {
if(!devicealivelistenerapplied && !defaultDevice) {
theAddress.mSelector = kAudioDevicePropertyDeviceIsAlive;
AudioObjectAddPropertyListener(outputDeviceID, &theAddress, current_device_listener, (__bridge void *_Nullable)(self));
devicealivelistenerapplied = YES;
}
theAddress.mSelector = kAudioDevicePropertyStreamFormat;
AudioObjectAddPropertyListener(outputDeviceID, &theAddress, current_device_listener, (__bridge void *_Nullable)(self));
theAddress.mSelector = kAudioDevicePropertyNominalSampleRate;
AudioObjectAddPropertyListener(outputDeviceID, &theAddress, current_device_listener, (__bridge void *_Nullable)(self));
currentdevicelistenerapplied = YES;
}
if(!defaultdevicelistenerapplied && defaultDevice) {
theAddress.mSelector = kAudioHardwarePropertyDefaultOutputDevice;
AudioObjectAddPropertyListener(kAudioObjectSystemObject, &theAddress, default_device_changed, (__bridge void *_Nullable)(self));
defaultdevicelistenerapplied = YES;
}
} else {
err = noErr;
@ -842,14 +889,28 @@ default_device_changed(AudioObjectID inObjectID, UInt32 inNumberAddresses, const
paused = NO;
[writeSemaphore signal];
[readSemaphore signal];
if(listenerapplied) {
if(defaultdevicelistenerapplied || currentdevicelistenerapplied || devicealivelistenerapplied) {
AudioObjectPropertyAddress theAddress = {
.mSelector = kAudioHardwarePropertyDefaultOutputDevice,
.mScope = kAudioObjectPropertyScopeGlobal,
.mElement = kAudioObjectPropertyElementMaster
};
if(defaultdevicelistenerapplied) {
theAddress.mSelector = kAudioHardwarePropertyDefaultOutputDevice;
AudioObjectRemovePropertyListener(kAudioObjectSystemObject, &theAddress, default_device_changed, (__bridge void *_Nullable)(self));
listenerapplied = NO;
defaultdevicelistenerapplied = NO;
}
if(devicealivelistenerapplied) {
theAddress.mSelector = kAudioDevicePropertyDeviceIsAlive;
AudioObjectRemovePropertyListener(outputDeviceID, &theAddress, current_device_listener, (__bridge void *_Nullable)(self));
devicealivelistenerapplied = NO;
}
if(currentdevicelistenerapplied) {
theAddress.mSelector = kAudioDevicePropertyStreamFormat;
AudioObjectRemovePropertyListener(outputDeviceID, &theAddress, current_device_listener, (__bridge void *_Nullable)(self));
theAddress.mSelector = kAudioDevicePropertyNominalSampleRate;
AudioObjectRemovePropertyListener(outputDeviceID, &theAddress, current_device_listener, (__bridge void *_Nullable)(self));
currentdevicelistenerapplied = NO;
}
}
if(_au) {
if(started)