6c3af4b2a4
Fixes visualization latency under virtual machines, at least. Not sure which local or native systems would be reporting high latency here, but this should fix them as well. Signed-off-by: Christopher Snowhill <kode54@gmail.com>
831 lines
23 KiB
Objective-C
831 lines
23 KiB
Objective-C
//
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// OutputCoreAudio.m
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// Cog
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//
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// Created by Christopher Snowhill on 7/25/23.
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// Copyright 2023-2024 Christopher Snowhill. All rights reserved.
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//
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#import "OutputCoreAudio.h"
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#import "OutputNode.h"
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#ifdef _DEBUG
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#import "BadSampleCleaner.h"
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#endif
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#import "Logging.h"
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#import <Accelerate/Accelerate.h>
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#import <CogAudio/VisualizationController.h>
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extern void scale_by_volume(float *buffer, size_t count, float volume);
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static NSString *CogPlaybackDidBeginNotificiation = @"CogPlaybackDidBeginNotificiation";
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@implementation OutputCoreAudio {
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VisualizationController *visController;
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}
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static void *kOutputCoreAudioContext = &kOutputCoreAudioContext;
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- (AudioChunk *)renderInput:(int)amountToRead {
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int amountRead = 0;
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if(stopping == YES || [outputController shouldContinue] == NO) {
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// Chain is dead, fill out the serial number pointer forever with silence
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stopping = YES;
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return [[AudioChunk alloc] init];
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}
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AudioStreamBasicDescription format;
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uint32_t config;
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if([outputController peekFormat:&format channelConfig:&config]) {
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if(!streamFormatStarted || config != realStreamChannelConfig || memcmp(&realStreamFormat, &format, sizeof(format)) != 0) {
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realStreamFormat = format;
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realStreamChannelConfig = config;
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streamFormatStarted = YES;
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streamFormatChanged = YES;
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}
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}
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if(streamFormatChanged) {
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return [[AudioChunk alloc] init];
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}
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return [outputController readChunk:amountToRead];
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}
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- (id)initWithController:(OutputNode *)c {
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self = [super init];
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if(self) {
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outputController = c;
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volume = 1.0;
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outputDeviceID = -1;
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secondsHdcdSustained = 0;
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outputLock = [[NSLock alloc] init];
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#ifdef OUTPUT_LOG
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NSString *logName = [NSTemporaryDirectory() stringByAppendingPathComponent:@"CogAudioLog.raw"];
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_logFile = fopen([logName UTF8String], "wb");
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#endif
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}
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return self;
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}
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static OSStatus
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default_device_changed(AudioObjectID inObjectID, UInt32 inNumberAddresses, const AudioObjectPropertyAddress *inAddresses, void *inUserData) {
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OutputCoreAudio *_self = (__bridge OutputCoreAudio *)inUserData;
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return [_self setOutputDeviceByID:-1];
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}
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static OSStatus
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current_device_listener(AudioObjectID inObjectID, UInt32 inNumberAddresses, const AudioObjectPropertyAddress *inAddresses, void *inUserData) {
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OutputCoreAudio *_self = (__bridge OutputCoreAudio *)inUserData;
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for(UInt32 i = 0; i < inNumberAddresses; ++i) {
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switch(inAddresses[i].mSelector) {
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case kAudioDevicePropertyDeviceIsAlive:
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return [_self setOutputDeviceByID:-1];
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case kAudioDevicePropertyNominalSampleRate:
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case kAudioDevicePropertyStreamFormat:
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_self->outputdevicechanged = YES;
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return noErr;
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}
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}
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return noErr;
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}
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- (void)observeValueForKeyPath:(NSString *)keyPath ofObject:(id)object change:(NSDictionary *)change context:(void *)context {
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if(context != kOutputCoreAudioContext) {
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[super observeValueForKeyPath:keyPath ofObject:object change:change context:context];
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return;
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}
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if([keyPath isEqualToString:@"values.outputDevice"]) {
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NSDictionary *device = [[[NSUserDefaultsController sharedUserDefaultsController] defaults] objectForKey:@"outputDevice"];
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[self setOutputDeviceWithDeviceDict:device];
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}
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}
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- (BOOL)signalEndOfStream:(double)latency {
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stopped = YES;
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BOOL ret = [outputController selectNextBuffer];
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stopped = ret;
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dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(NSEC_PER_SEC * latency)), dispatch_get_main_queue(), ^{
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[self->outputController endOfInputPlayed];
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[self->outputController resetAmountPlayed];
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});
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return ret;
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}
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- (BOOL)processEndOfStream {
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if(stopping || ([outputController endOfStream] == YES && [self signalEndOfStream:[outputController getTotalLatency]])) {
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stopping = YES;
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return YES;
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}
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return NO;
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}
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- (void)threadEntry:(id)arg {
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@autoreleasepool {
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NSThread *currentThread = [NSThread currentThread];
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[currentThread setThreadPriority:0.75];
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[currentThread setQualityOfService:NSQualityOfServiceUserInitiated];
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}
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running = YES;
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started = NO;
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shouldPlayOutBuffer = NO;
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BOOL rendered = NO;
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while(!stopping) {
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@autoreleasepool {
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if(outputdevicechanged) {
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[self updateDeviceFormat];
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outputdevicechanged = NO;
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}
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if([outputController shouldReset]) {
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[outputController setShouldReset:NO];
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[outputLock lock];
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started = NO;
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restarted = NO;
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[outputBuffer reset];
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[outputLock unlock];
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}
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if(stopping)
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break;
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if(![outputBuffer isFull]) {
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[self renderAndConvert];
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rendered = YES;
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} else {
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rendered = NO;
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}
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if(!started && !paused) {
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[self resume];
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}
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if([outputController shouldContinue] == NO) {
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break;
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}
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}
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if(!rendered) {
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usleep(5000);
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}
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}
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stopped = YES;
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if(!stopInvoked) {
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[self doStop];
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}
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}
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- (OSStatus)setOutputDeviceByID:(AudioDeviceID)deviceID {
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OSStatus err;
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BOOL defaultDevice = NO;
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AudioObjectPropertyAddress theAddress = {
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.mSelector = kAudioHardwarePropertyDefaultOutputDevice,
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.mScope = kAudioObjectPropertyScopeGlobal,
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.mElement = kAudioObjectPropertyElementMaster
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};
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if(deviceID == -1) {
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defaultDevice = YES;
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UInt32 size = sizeof(AudioDeviceID);
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err = AudioObjectGetPropertyData(kAudioObjectSystemObject, &theAddress, 0, NULL, &size, &deviceID);
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if(err != noErr) {
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DLog(@"THERE'S NO DEFAULT OUTPUT DEVICE");
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return err;
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}
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}
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if(_au) {
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if(defaultdevicelistenerapplied && !defaultDevice) {
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/* Already set above
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* theAddress.mSelector = kAudioHardwarePropertyDefaultOutputDevice; */
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AudioObjectRemovePropertyListener(kAudioObjectSystemObject, &theAddress, default_device_changed, (__bridge void *_Nullable)(self));
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defaultdevicelistenerapplied = NO;
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}
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outputdevicechanged = NO;
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if(outputDeviceID != deviceID) {
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if(currentdevicelistenerapplied) {
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if(devicealivelistenerapplied) {
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theAddress.mSelector = kAudioDevicePropertyDeviceIsAlive;
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AudioObjectRemovePropertyListener(outputDeviceID, &theAddress, current_device_listener, (__bridge void *_Nullable)(self));
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devicealivelistenerapplied = NO;
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}
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theAddress.mSelector = kAudioDevicePropertyStreamFormat;
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AudioObjectRemovePropertyListener(outputDeviceID, &theAddress, current_device_listener, (__bridge void *_Nullable)(self));
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theAddress.mSelector = kAudioDevicePropertyNominalSampleRate;
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AudioObjectRemovePropertyListener(outputDeviceID, &theAddress, current_device_listener, (__bridge void *_Nullable)(self));
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currentdevicelistenerapplied = NO;
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}
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DLog(@"Device: %i\n", deviceID);
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outputDeviceID = deviceID;
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NSError *nserr;
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[_au setDeviceID:outputDeviceID error:&nserr];
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if(nserr != nil) {
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return (OSErr)[nserr code];
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}
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outputdevicechanged = YES;
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}
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if(!currentdevicelistenerapplied) {
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if(!devicealivelistenerapplied && !defaultDevice) {
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theAddress.mSelector = kAudioDevicePropertyDeviceIsAlive;
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AudioObjectAddPropertyListener(outputDeviceID, &theAddress, current_device_listener, (__bridge void *_Nullable)(self));
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devicealivelistenerapplied = YES;
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}
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theAddress.mSelector = kAudioDevicePropertyStreamFormat;
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AudioObjectAddPropertyListener(outputDeviceID, &theAddress, current_device_listener, (__bridge void *_Nullable)(self));
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theAddress.mSelector = kAudioDevicePropertyNominalSampleRate;
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AudioObjectAddPropertyListener(outputDeviceID, &theAddress, current_device_listener, (__bridge void *_Nullable)(self));
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currentdevicelistenerapplied = YES;
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}
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if(!defaultdevicelistenerapplied && defaultDevice) {
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theAddress.mSelector = kAudioHardwarePropertyDefaultOutputDevice;
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AudioObjectAddPropertyListener(kAudioObjectSystemObject, &theAddress, default_device_changed, (__bridge void *_Nullable)(self));
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defaultdevicelistenerapplied = YES;
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}
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} else {
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err = noErr;
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}
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if(err != noErr) {
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DLog(@"No output device with ID %d could be found.", deviceID);
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return err;
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}
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return err;
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}
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- (BOOL)setOutputDeviceWithDeviceDict:(NSDictionary *)deviceDict {
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NSNumber *deviceIDNum = [deviceDict objectForKey:@"deviceID"];
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AudioDeviceID outputDeviceID = [deviceIDNum unsignedIntValue] ?: -1;
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__block OSStatus err = [self setOutputDeviceByID:outputDeviceID];
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if(err != noErr) {
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// Try matching by name.
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NSString *userDeviceName = deviceDict[@"name"];
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[self enumerateAudioOutputsUsingBlock:
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^(NSString *deviceName, AudioDeviceID deviceID, AudioDeviceID systemDefaultID, BOOL *stop) {
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if([deviceName isEqualToString:userDeviceName]) {
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err = [self setOutputDeviceByID:deviceID];
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#if 0
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// Disable. Would cause loop by triggering `-observeValueForKeyPath:ofObject:change:context:` above.
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// Update `outputDevice`, in case the ID has changed.
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NSDictionary *deviceInfo = @{
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@"name": deviceName,
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@"deviceID": @(deviceID),
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};
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[[NSUserDefaults standardUserDefaults] setObject:deviceInfo forKey:@"outputDevice"];
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#endif
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DLog(@"Found output device: \"%@\" (%d).", deviceName, deviceID);
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*stop = YES;
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}
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}];
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}
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if(err != noErr) {
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ALog(@"No output device could be found, your random error code is %d. Have a nice day!", err);
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return NO;
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}
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return YES;
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}
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// The following is largely a copy pasta of -awakeFromNib from "OutputsArrayController.m".
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// TODO: Share the code. (How to do this across xcodeproj?)
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- (void)enumerateAudioOutputsUsingBlock:(void(NS_NOESCAPE ^ _Nonnull)(NSString *deviceName, AudioDeviceID deviceID, AudioDeviceID systemDefaultID, BOOL *stop))block {
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UInt32 propsize;
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AudioObjectPropertyAddress theAddress = {
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.mSelector = kAudioHardwarePropertyDevices,
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.mScope = kAudioObjectPropertyScopeGlobal,
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.mElement = kAudioObjectPropertyElementMaster
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};
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__Verify_noErr(AudioObjectGetPropertyDataSize(kAudioObjectSystemObject, &theAddress, 0, NULL, &propsize));
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UInt32 nDevices = propsize / (UInt32)sizeof(AudioDeviceID);
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AudioDeviceID *devids = (AudioDeviceID *)malloc(propsize);
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__Verify_noErr(AudioObjectGetPropertyData(kAudioObjectSystemObject, &theAddress, 0, NULL, &propsize, devids));
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theAddress.mSelector = kAudioHardwarePropertyDefaultOutputDevice;
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AudioDeviceID systemDefault;
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propsize = sizeof(systemDefault);
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__Verify_noErr(AudioObjectGetPropertyData(kAudioObjectSystemObject, &theAddress, 0, NULL, &propsize, &systemDefault));
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theAddress.mScope = kAudioDevicePropertyScopeOutput;
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for(UInt32 i = 0; i < nDevices; ++i) {
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UInt32 isAlive = 0;
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propsize = sizeof(isAlive);
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theAddress.mSelector = kAudioDevicePropertyDeviceIsAlive;
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__Verify_noErr(AudioObjectGetPropertyData(devids[i], &theAddress, 0, NULL, &propsize, &isAlive));
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if(!isAlive) continue;
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CFStringRef name = NULL;
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propsize = sizeof(name);
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theAddress.mSelector = kAudioDevicePropertyDeviceNameCFString;
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__Verify_noErr(AudioObjectGetPropertyData(devids[i], &theAddress, 0, NULL, &propsize, &name));
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propsize = 0;
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theAddress.mSelector = kAudioDevicePropertyStreamConfiguration;
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__Verify_noErr(AudioObjectGetPropertyDataSize(devids[i], &theAddress, 0, NULL, &propsize));
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if(propsize < sizeof(UInt32)) {
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if(name) CFRelease(name);
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continue;
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}
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AudioBufferList *bufferList = (AudioBufferList *)malloc(propsize);
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__Verify_noErr(AudioObjectGetPropertyData(devids[i], &theAddress, 0, NULL, &propsize, bufferList));
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UInt32 bufferCount = bufferList->mNumberBuffers;
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free(bufferList);
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if(!bufferCount) {
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if(name) CFRelease(name);
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continue;
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}
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BOOL stop = NO;
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NSString *deviceName = name ? [NSString stringWithString:(__bridge NSString *)name] : [NSString stringWithFormat:@"Unknown device %u", (unsigned int)devids[i]];
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block(deviceName,
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devids[i],
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systemDefault,
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&stop);
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CFRelease(name);
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if(stop) {
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break;
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}
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}
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free(devids);
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}
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- (BOOL)updateDeviceFormat {
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AVAudioFormat *format = _au.outputBusses[0].format;
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if(!_deviceFormat || ![_deviceFormat isEqual:format]) {
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NSError *err;
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AVAudioFormat *renderFormat;
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_deviceFormat = format;
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deviceFormat = *(format.streamDescription);
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/// Seems some 3rd party devices return incorrect stuff...or I just don't like noninterleaved data.
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deviceFormat.mFormatFlags &= ~kLinearPCMFormatFlagIsNonInterleaved;
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// deviceFormat.mFormatFlags &= ~kLinearPCMFormatFlagIsFloat;
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// deviceFormat.mFormatFlags = kLinearPCMFormatFlagIsSignedInteger;
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// We don't want more than 8 channels
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if(deviceFormat.mChannelsPerFrame > 8) {
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deviceFormat.mChannelsPerFrame = 8;
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}
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deviceFormat.mBytesPerFrame = deviceFormat.mChannelsPerFrame * (deviceFormat.mBitsPerChannel / 8);
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deviceFormat.mBytesPerPacket = deviceFormat.mBytesPerFrame * deviceFormat.mFramesPerPacket;
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/* Set the channel layout for the audio queue */
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AudioChannelLayoutTag tag = 0;
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switch(deviceFormat.mChannelsPerFrame) {
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case 1:
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tag = kAudioChannelLayoutTag_Mono;
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deviceChannelConfig = AudioConfigMono;
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break;
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case 2:
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tag = kAudioChannelLayoutTag_Stereo;
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deviceChannelConfig = AudioConfigStereo;
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break;
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case 3:
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tag = kAudioChannelLayoutTag_DVD_4;
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deviceChannelConfig = AudioConfig3Point0;
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break;
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case 4:
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tag = kAudioChannelLayoutTag_Quadraphonic;
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deviceChannelConfig = AudioConfig4Point0;
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break;
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case 5:
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tag = kAudioChannelLayoutTag_MPEG_5_0_A;
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deviceChannelConfig = AudioConfig5Point0;
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break;
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case 6:
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tag = kAudioChannelLayoutTag_MPEG_5_1_A;
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deviceChannelConfig = AudioConfig5Point1;
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break;
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case 7:
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tag = kAudioChannelLayoutTag_MPEG_6_1_A;
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deviceChannelConfig = AudioConfig6Point1;
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break;
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case 8:
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tag = kAudioChannelLayoutTag_MPEG_7_1_A;
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deviceChannelConfig = AudioConfig7Point1;
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break;
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}
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renderFormat = [[AVAudioFormat alloc] initWithStreamDescription:&deviceFormat channelLayout:[[AVAudioChannelLayout alloc] initWithLayoutTag:tag]];
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[_au.inputBusses[0] setFormat:renderFormat error:&err];
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if(err != nil)
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return NO;
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[outputController setFormat:&deviceFormat channelConfig:deviceChannelConfig];
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[outputLock lock];
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[outputBuffer reset];
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[outputLock unlock];
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}
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return YES;
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}
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- (void)updateStreamFormat {
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/* Set the channel layout for the audio queue */
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resetStreamFormat = NO;
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uint32_t channels = realStreamFormat.mChannelsPerFrame;
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uint32_t channelConfig = realStreamChannelConfig;
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streamFormat = realStreamFormat;
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streamFormat.mChannelsPerFrame = channels;
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streamFormat.mBytesPerFrame = sizeof(float) * channels;
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streamFormat.mFramesPerPacket = 1;
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streamFormat.mBytesPerPacket = sizeof(float) * channels;
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streamChannelConfig = channelConfig;
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AudioChannelLayoutTag tag = 0;
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AudioChannelLayout layout = { 0 };
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switch(streamChannelConfig) {
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case AudioConfigMono:
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tag = kAudioChannelLayoutTag_Mono;
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break;
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case AudioConfigStereo:
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tag = kAudioChannelLayoutTag_Stereo;
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break;
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case AudioConfig3Point0:
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tag = kAudioChannelLayoutTag_WAVE_3_0;
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break;
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case AudioConfig4Point0:
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tag = kAudioChannelLayoutTag_WAVE_4_0_A;
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break;
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case AudioConfig5Point0:
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tag = kAudioChannelLayoutTag_WAVE_5_0_A;
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break;
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case AudioConfig5Point1:
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tag = kAudioChannelLayoutTag_WAVE_5_1_A;
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break;
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case AudioConfig6Point1:
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tag = kAudioChannelLayoutTag_WAVE_6_1;
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break;
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case AudioConfig7Point1:
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tag = kAudioChannelLayoutTag_WAVE_7_1;
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break;
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default:
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tag = 0;
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break;
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}
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if(tag) {
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layout.mChannelLayoutTag = tag;
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} else {
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layout.mChannelLayoutTag = kAudioChannelLayoutTag_UseChannelBitmap;
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layout.mChannelBitmap = streamChannelConfig;
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}
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}
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- (void)renderAndConvert {
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if(resetStreamFormat) {
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[self updateStreamFormat];
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if([self processEndOfStream]) {
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return;
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}
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}
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AudioChunk *chunk = [self renderInput:512];
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size_t frameCount = 0;
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|
if(chunk) {
|
|
frameCount = [chunk frameCount];
|
|
|
|
[outputLock lock];
|
|
[outputBuffer addChunk:chunk];
|
|
[outputLock unlock];
|
|
}
|
|
|
|
if(streamFormatChanged) {
|
|
streamFormatChanged = NO;
|
|
if(frameCount) {
|
|
resetStreamFormat = YES;
|
|
} else {
|
|
[self updateStreamFormat];
|
|
}
|
|
}
|
|
[self processEndOfStream];
|
|
}
|
|
|
|
- (void)audioOutputBlock {
|
|
__block AudioStreamBasicDescription *format = &deviceFormat;
|
|
__block void *refCon = (__bridge void *)self;
|
|
__block NSLock *refLock = self->outputLock;
|
|
|
|
#ifdef OUTPUT_LOG
|
|
__block FILE *logFile = _logFile;
|
|
#endif
|
|
|
|
_au.outputProvider = ^AUAudioUnitStatus(AudioUnitRenderActionFlags *_Nonnull actionFlags, const AudioTimeStamp *_Nonnull timestamp, AUAudioFrameCount frameCount, NSInteger inputBusNumber, AudioBufferList *_Nonnull inputData) {
|
|
if(!frameCount) return 0;
|
|
|
|
const int channels = format->mChannelsPerFrame;
|
|
if(!channels) return 0;
|
|
|
|
if(!inputData->mNumberBuffers || !inputData->mBuffers[0].mData) return 0;
|
|
|
|
OutputCoreAudio *_self = (__bridge OutputCoreAudio *)refCon;
|
|
int renderedSamples = 0;
|
|
|
|
@autoreleasepool {
|
|
while(renderedSamples < frameCount) {
|
|
[refLock lock];
|
|
AudioChunk *chunk = [_self->outputBuffer removeSamples:frameCount - renderedSamples];
|
|
[refLock unlock];
|
|
|
|
_self->streamTimestamp = [chunk streamTimestamp];
|
|
|
|
size_t _frameCount = [chunk frameCount];
|
|
if(_frameCount) {
|
|
NSData *sampleData = [chunk removeSamples:_frameCount];
|
|
float *samplePtr = (float *)[sampleData bytes];
|
|
size_t inputTodo = MIN(_frameCount, frameCount - renderedSamples);
|
|
cblas_scopy((int)(inputTodo * channels), samplePtr, 1, ((float *)inputData->mBuffers[0].mData) + renderedSamples * channels, 1);
|
|
renderedSamples += inputTodo;
|
|
}
|
|
|
|
if(_self->stopping) {
|
|
break;
|
|
}
|
|
}
|
|
|
|
double secondsRendered = (double)renderedSamples / format->mSampleRate;
|
|
float volumeScale = 1.0;
|
|
double sustained;
|
|
sustained = _self->secondsHdcdSustained;
|
|
if(sustained > 0) {
|
|
if(sustained < secondsRendered) {
|
|
_self->secondsHdcdSustained = 0.0;
|
|
} else {
|
|
_self->secondsHdcdSustained = sustained - secondsRendered;
|
|
volumeScale = 0.5;
|
|
}
|
|
}
|
|
|
|
scale_by_volume((float*)inputData->mBuffers[0].mData, renderedSamples * channels, volumeScale * _self->volume);
|
|
|
|
inputData->mBuffers[0].mDataByteSize = renderedSamples * format->mBytesPerPacket;
|
|
inputData->mBuffers[0].mNumberChannels = channels;
|
|
|
|
[_self updateLatency:secondsRendered];
|
|
}
|
|
|
|
#ifdef _DEBUG
|
|
[BadSampleCleaner cleanSamples:(float *)inputData->mBuffers[0].mData
|
|
amount:inputData->mBuffers[0].mDataByteSize / sizeof(float)
|
|
location:@"final output"];
|
|
#endif
|
|
|
|
return 0;
|
|
};
|
|
}
|
|
|
|
- (BOOL)setup {
|
|
if(_au)
|
|
[self stop];
|
|
|
|
@synchronized(self) {
|
|
stopInvoked = NO;
|
|
stopCompleted = NO;
|
|
commandStop = NO;
|
|
shouldPlayOutBuffer = NO;
|
|
|
|
resetStreamFormat = NO;
|
|
streamFormatChanged = NO;
|
|
streamFormatStarted = NO;
|
|
|
|
running = NO;
|
|
stopping = NO;
|
|
stopped = NO;
|
|
paused = NO;
|
|
outputDeviceID = -1;
|
|
restarted = NO;
|
|
|
|
AudioComponentDescription desc;
|
|
NSError *err;
|
|
|
|
desc.componentType = kAudioUnitType_Output;
|
|
desc.componentSubType = kAudioUnitSubType_HALOutput;
|
|
desc.componentManufacturer = kAudioUnitManufacturer_Apple;
|
|
desc.componentFlags = 0;
|
|
desc.componentFlagsMask = 0;
|
|
|
|
_au = [[AUAudioUnit alloc] initWithComponentDescription:desc error:&err];
|
|
if(err != nil)
|
|
return NO;
|
|
|
|
// Setup the output device before mucking with settings
|
|
NSDictionary *device = [[[NSUserDefaultsController sharedUserDefaultsController] defaults] objectForKey:@"outputDevice"];
|
|
if(device) {
|
|
BOOL ok = [self setOutputDeviceWithDeviceDict:device];
|
|
if(!ok) {
|
|
// Ruh roh.
|
|
[self setOutputDeviceWithDeviceDict:nil];
|
|
|
|
[[[NSUserDefaultsController sharedUserDefaultsController] defaults] removeObjectForKey:@"outputDevice"];
|
|
}
|
|
} else {
|
|
[self setOutputDeviceWithDeviceDict:nil];
|
|
}
|
|
|
|
[self audioOutputBlock];
|
|
|
|
[_au allocateRenderResourcesAndReturnError:&err];
|
|
|
|
[self updateDeviceFormat];
|
|
|
|
visController = [VisualizationController sharedController];
|
|
|
|
[[NSUserDefaultsController sharedUserDefaultsController] addObserver:self forKeyPath:@"values.outputDevice" options:0 context:kOutputCoreAudioContext];
|
|
|
|
observersapplied = YES;
|
|
|
|
outputBuffer = [[ChunkList alloc] initWithMaximumDuration:0.5];
|
|
if(!outputBuffer) {
|
|
return NO;
|
|
}
|
|
|
|
return (err == nil);
|
|
}
|
|
}
|
|
|
|
- (void)updateLatency:(double)secondsPlayed {
|
|
double visLatency = [outputController getVisLatency];
|
|
if(secondsPlayed > 0) {
|
|
[outputController setAmountPlayed:streamTimestamp];
|
|
}
|
|
[visController postLatency:visLatency];
|
|
}
|
|
|
|
- (double)volume {
|
|
return volume * 100.0f;
|
|
}
|
|
|
|
- (void)setVolume:(double)v {
|
|
volume = v * 0.01f;
|
|
}
|
|
|
|
- (double)latency {
|
|
NSTimeInterval latency = 0.0;
|
|
if(_au) {
|
|
latency = [_au latency];
|
|
}
|
|
return [outputBuffer listDuration] + latency;
|
|
}
|
|
|
|
- (void)start {
|
|
[self threadEntry:nil];
|
|
}
|
|
|
|
- (void)stop {
|
|
commandStop = YES;
|
|
[self doStop];
|
|
}
|
|
|
|
- (void)doStop {
|
|
if(stopInvoked) {
|
|
return;
|
|
}
|
|
@synchronized(self) {
|
|
stopInvoked = YES;
|
|
if(observersapplied) {
|
|
[[NSUserDefaultsController sharedUserDefaultsController] removeObserver:self forKeyPath:@"values.outputDevice" context:kOutputCoreAudioContext];
|
|
observersapplied = NO;
|
|
}
|
|
stopping = YES;
|
|
paused = NO;
|
|
if(defaultdevicelistenerapplied || currentdevicelistenerapplied || devicealivelistenerapplied) {
|
|
AudioObjectPropertyAddress theAddress = {
|
|
.mScope = kAudioObjectPropertyScopeGlobal,
|
|
.mElement = kAudioObjectPropertyElementMaster
|
|
};
|
|
if(defaultdevicelistenerapplied) {
|
|
theAddress.mSelector = kAudioHardwarePropertyDefaultOutputDevice;
|
|
AudioObjectRemovePropertyListener(kAudioObjectSystemObject, &theAddress, default_device_changed, (__bridge void *_Nullable)(self));
|
|
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(shouldPlayOutBuffer && !commandStop) {
|
|
double compareVal = 0;
|
|
double secondsLatency = [outputController getTotalLatency];
|
|
int compareMax = (((1000000 / 5000) * secondsLatency) + (10000 / 5000)); // latency plus 10ms, divide by sleep intervals
|
|
do {
|
|
compareVal = [outputController getTotalLatency];
|
|
usleep(5000);
|
|
} while(!commandStop && compareVal > 0 && compareMax-- > 0);
|
|
}
|
|
[_au stopHardware];
|
|
_au = nil;
|
|
}
|
|
if(running) {
|
|
while(!stopped) {
|
|
stopping = YES;
|
|
usleep(5000);
|
|
}
|
|
}
|
|
#ifdef OUTPUT_LOG
|
|
if(_logFile) {
|
|
fclose(_logFile);
|
|
_logFile = NULL;
|
|
}
|
|
#endif
|
|
outputController = nil;
|
|
if(visController) {
|
|
[visController reset];
|
|
visController = nil;
|
|
}
|
|
stopCompleted = YES;
|
|
}
|
|
}
|
|
|
|
- (void)dealloc {
|
|
[self stop];
|
|
// In case stop called on another thread first
|
|
while(!stopCompleted) {
|
|
usleep(500);
|
|
}
|
|
}
|
|
|
|
- (void)pause {
|
|
paused = YES;
|
|
if(started)
|
|
[_au stopHardware];
|
|
}
|
|
|
|
- (void)resume {
|
|
NSError *err;
|
|
[_au startHardwareAndReturnError:&err];
|
|
paused = NO;
|
|
started = YES;
|
|
}
|
|
|
|
- (void)sustainHDCD {
|
|
secondsHdcdSustained = 10.0;
|
|
}
|
|
|
|
- (void)setShouldPlayOutBuffer:(BOOL)s {
|
|
shouldPlayOutBuffer = s;
|
|
}
|
|
|
|
- (AudioStreamBasicDescription)deviceFormat {
|
|
return deviceFormat;
|
|
}
|
|
|
|
- (uint32_t)deviceChannelConfig {
|
|
return deviceChannelConfig;
|
|
}
|
|
|
|
@end
|