From 9cd57b731ab1c666d4a1cb725538fdc137763d12 Mon Sep 17 00:00:00 2001 From: Starla Insigna Date: Sat, 30 Jul 2011 11:19:14 -0400 Subject: Initial commit (version 0.2.1) --- libs/CocosDenshion/CDAudioManager.m | 887 ++++++++++++++++++++++++++++++++++++ 1 file changed, 887 insertions(+) create mode 100755 libs/CocosDenshion/CDAudioManager.m (limited to 'libs/CocosDenshion/CDAudioManager.m') diff --git a/libs/CocosDenshion/CDAudioManager.m b/libs/CocosDenshion/CDAudioManager.m new file mode 100755 index 0000000..0929f3c --- /dev/null +++ b/libs/CocosDenshion/CDAudioManager.m @@ -0,0 +1,887 @@ +/* + Copyright (c) 2010 Steve Oldmeadow + + Permission is hereby granted, free of charge, to any person obtaining a copy + of this software and associated documentation files (the "Software"), to deal + in the Software without restriction, including without limitation the rights + to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + copies of the Software, and to permit persons to whom the Software is + furnished to do so, subject to the following conditions: + + The above copyright notice and this permission notice shall be included in + all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + THE SOFTWARE. + + $Id$ + */ + + +#import "CDAudioManager.h" + +NSString * const kCDN_AudioManagerInitialised = @"kCDN_AudioManagerInitialised"; + +//NSOperation object used to asynchronously initialise +@implementation CDAsynchInitialiser + +-(void) main { + [super main]; + [CDAudioManager sharedManager]; +} + +@end + +@implementation CDLongAudioSource + +@synthesize audioSourcePlayer, audioSourceFilePath, delegate, backgroundMusic; + +-(id) init { + if ((self = [super init])) { + state = kLAS_Init; + volume = 1.0f; + mute = NO; + enabled_ = YES; + } + return self; +} + +-(void) dealloc { + CDLOGINFO(@"Denshion::CDLongAudioSource - deallocating %@", self); + [audioSourcePlayer release]; + [audioSourceFilePath release]; + [super dealloc]; +} + +-(void) load:(NSString*) filePath { + //We have alread loaded a file previously, check if we are being asked to load the same file + if (state == kLAS_Init || ![filePath isEqualToString:audioSourceFilePath]) { + CDLOGINFO(@"Denshion::CDLongAudioSource - Loading new audio source %@",filePath); + //New file + if (state != kLAS_Init) { + [audioSourceFilePath release];//Release old file path + [audioSourcePlayer release];//Release old AVAudioPlayer, they can't be reused + } + audioSourceFilePath = [filePath copy]; + NSError *error = nil; + NSString *path = [CDUtilities fullPathFromRelativePath:audioSourceFilePath]; + audioSourcePlayer = [(AVAudioPlayer*)[AVAudioPlayer alloc] initWithContentsOfURL:[NSURL fileURLWithPath:path] error:&error]; + if (error == nil) { + [audioSourcePlayer prepareToPlay]; + audioSourcePlayer.delegate = self; + if (delegate && [delegate respondsToSelector:@selector(cdAudioSourceFileDidChange:)]) { + //Tell our delegate the file has changed + [delegate cdAudioSourceFileDidChange:self]; + } + } else { + CDLOG(@"Denshion::CDLongAudioSource - Error initialising audio player: %@",error); + } + } else { + //Same file - just return it to a consistent state + [self pause]; + [self rewind]; + } + audioSourcePlayer.volume = volume; + audioSourcePlayer.numberOfLoops = numberOfLoops; + state = kLAS_Loaded; +} + +-(void) play { + if (enabled_) { + self->systemPaused = NO; + [audioSourcePlayer play]; + } else { + CDLOGINFO(@"Denshion::CDLongAudioSource long audio source didn't play because it is disabled"); + } +} + +-(void) stop { + [audioSourcePlayer stop]; +} + +-(void) pause { + [audioSourcePlayer pause]; +} + +-(void) rewind { + [audioSourcePlayer setCurrentTime:0]; +} + +-(void) resume { + [audioSourcePlayer play]; +} + +-(BOOL) isPlaying { + if (state != kLAS_Init) { + return [audioSourcePlayer isPlaying]; + } else { + return NO; + } +} + +-(void) setVolume:(float) newVolume +{ + volume = newVolume; + if (state != kLAS_Init && !mute) { + audioSourcePlayer.volume = newVolume; + } +} + +-(float) volume +{ + return volume; +} + +#pragma mark Audio Interrupt Protocol +-(BOOL) mute +{ + return mute; +} + +-(void) setMute:(BOOL) muteValue +{ + if (mute != muteValue) { + if (mute) { + //Turn sound back on + audioSourcePlayer.volume = volume; + } else { + audioSourcePlayer.volume = 0.0f; + } + mute = muteValue; + } +} + +-(BOOL) enabled +{ + return enabled_; +} + +-(void) setEnabled:(BOOL)enabledValue +{ + if (enabledValue != enabled_) { + enabled_ = enabledValue; + if (!enabled_) { + //"Stop" the sounds + [self pause]; + [self rewind]; + } + } +} + +-(NSInteger) numberOfLoops { + return numberOfLoops; +} + +-(void) setNumberOfLoops:(NSInteger) loopCount +{ + audioSourcePlayer.numberOfLoops = loopCount; + numberOfLoops = loopCount; +} + +- (void)audioPlayerDidFinishPlaying:(AVAudioPlayer *)player successfully:(BOOL)flag { + CDLOGINFO(@"Denshion::CDLongAudioSource - audio player finished"); +#if TARGET_IPHONE_SIMULATOR + CDLOGINFO(@"Denshion::CDLongAudioSource - workaround for OpenAL clobbered audio issue"); + //This is a workaround for an issue in all simulators (tested to 3.1.2). Problem is + //that OpenAL audio playback is clobbered when an AVAudioPlayer stops. Workaround + //is to keep the player playing on an endless loop with 0 volume and then when + //it is played again reset the volume and set loop count appropriately. + //NB: this workaround is not foolproof but it is good enough for most situations. + player.numberOfLoops = -1; + player.volume = 0; + [player play]; +#endif + if (delegate && [delegate respondsToSelector:@selector(cdAudioSourceDidFinishPlaying:)]) { + [delegate cdAudioSourceDidFinishPlaying:self]; + } +} + +-(void)audioPlayerBeginInterruption:(AVAudioPlayer *)player { + CDLOGINFO(@"Denshion::CDLongAudioSource - audio player interrupted"); +} + +-(void)audioPlayerEndInterruption:(AVAudioPlayer *)player { + CDLOGINFO(@"Denshion::CDLongAudioSource - audio player resumed"); + if (self.backgroundMusic) { + //Check if background music can play as rules may have changed during + //the interruption. This is to address a specific issue in 4.x when + //fast task switching + if([CDAudioManager sharedManager].willPlayBackgroundMusic) { + [player play]; + } + } else { + [player play]; + } +} + +@end + + +@interface CDAudioManager (PrivateMethods) +-(BOOL) audioSessionSetActive:(BOOL) active; +-(BOOL) audioSessionSetCategory:(NSString*) category; +-(void) badAlContextHandler; +@end + + +@implementation CDAudioManager +#define BACKGROUND_MUSIC_CHANNEL kASC_Left + +@synthesize soundEngine, willPlayBackgroundMusic; +static CDAudioManager *sharedManager; +static tAudioManagerState _sharedManagerState = kAMStateUninitialised; +static tAudioManagerMode configuredMode; +static BOOL configured = FALSE; + +-(BOOL) audioSessionSetActive:(BOOL) active { + NSError *activationError = nil; + if ([[AVAudioSession sharedInstance] setActive:active error:&activationError]) { + _audioSessionActive = active; + CDLOGINFO(@"Denshion::CDAudioManager - Audio session set active %i succeeded", active); + return YES; + } else { + //Failed + CDLOG(@"Denshion::CDAudioManager - Audio session set active %i failed with error %@", active, activationError); + return NO; + } +} + +-(BOOL) audioSessionSetCategory:(NSString*) category { + NSError *categoryError = nil; + if ([[AVAudioSession sharedInstance] setCategory:category error:&categoryError]) { + CDLOGINFO(@"Denshion::CDAudioManager - Audio session set category %@ succeeded", category); + return YES; + } else { + //Failed + CDLOG(@"Denshion::CDAudioManager - Audio session set category %@ failed with error %@", category, categoryError); + return NO; + } +} + +// Init ++ (CDAudioManager *) sharedManager +{ + @synchronized(self) { + if (!sharedManager) { + if (!configured) { + //Set defaults here + configuredMode = kAMM_FxPlusMusicIfNoOtherAudio; + } + sharedManager = [[CDAudioManager alloc] init:configuredMode]; + _sharedManagerState = kAMStateInitialised;//This is only really relevant when using asynchronous initialisation + [[NSNotificationCenter defaultCenter] postNotificationName:kCDN_AudioManagerInitialised object:nil]; + } + } + return sharedManager; +} + ++ (tAudioManagerState) sharedManagerState { + return _sharedManagerState; +} + +/** + * Call this to set up audio manager asynchronously. Initialisation is finished when sharedManagerState == kAMStateInitialised + */ ++ (void) initAsynchronously: (tAudioManagerMode) mode { + @synchronized(self) { + if (_sharedManagerState == kAMStateUninitialised) { + _sharedManagerState = kAMStateInitialising; + [CDAudioManager configure:mode]; + CDAsynchInitialiser *initOp = [[[CDAsynchInitialiser alloc] init] autorelease]; + NSOperationQueue *opQ = [[[NSOperationQueue alloc] init] autorelease]; + [opQ addOperation:initOp]; + } + } +} + ++ (id) alloc +{ + @synchronized(self) { + NSAssert(sharedManager == nil, @"Attempted to allocate a second instance of a singleton."); + return [super alloc]; + } + return nil; +} + +/* + * Call this method before accessing the shared manager in order to configure the shared audio manager + */ ++ (void) configure: (tAudioManagerMode) mode { + configuredMode = mode; + configured = TRUE; +} + +-(BOOL) isOtherAudioPlaying { + UInt32 isPlaying = 0; + UInt32 varSize = sizeof(isPlaying); + AudioSessionGetProperty (kAudioSessionProperty_OtherAudioIsPlaying, &varSize, &isPlaying); + return (isPlaying != 0); +} + +-(void) setMode:(tAudioManagerMode) mode { + + _mode = mode; + switch (_mode) { + + case kAMM_FxOnly: + //Share audio with other app + CDLOGINFO(@"Denshion::CDAudioManager - Audio will be shared"); + //_audioSessionCategory = kAudioSessionCategory_AmbientSound; + _audioSessionCategory = AVAudioSessionCategoryAmbient; + willPlayBackgroundMusic = NO; + break; + + case kAMM_FxPlusMusic: + //Use audio exclusively - if other audio is playing it will be stopped + CDLOGINFO(@"Denshion::CDAudioManager - Audio will be exclusive"); + //_audioSessionCategory = kAudioSessionCategory_SoloAmbientSound; + _audioSessionCategory = AVAudioSessionCategorySoloAmbient; + willPlayBackgroundMusic = YES; + break; + + case kAMM_MediaPlayback: + //Use audio exclusively, ignore mute switch and sleep + CDLOGINFO(@"Denshion::CDAudioManager - Media playback mode, audio will be exclusive"); + //_audioSessionCategory = kAudioSessionCategory_MediaPlayback; + _audioSessionCategory = AVAudioSessionCategoryPlayback; + willPlayBackgroundMusic = YES; + break; + + case kAMM_PlayAndRecord: + //Use audio exclusively, ignore mute switch and sleep, has inputs and outputs + CDLOGINFO(@"Denshion::CDAudioManager - Play and record mode, audio will be exclusive"); + //_audioSessionCategory = kAudioSessionCategory_PlayAndRecord; + _audioSessionCategory = AVAudioSessionCategoryPlayAndRecord; + willPlayBackgroundMusic = YES; + break; + + default: + //kAudioManagerFxPlusMusicIfNoOtherAudio + if ([self isOtherAudioPlaying]) { + CDLOGINFO(@"Denshion::CDAudioManager - Other audio is playing audio will be shared"); + //_audioSessionCategory = kAudioSessionCategory_AmbientSound; + _audioSessionCategory = AVAudioSessionCategoryAmbient; + willPlayBackgroundMusic = NO; + } else { + CDLOGINFO(@"Denshion::CDAudioManager - Other audio is not playing audio will be exclusive"); + //_audioSessionCategory = kAudioSessionCategory_SoloAmbientSound; + _audioSessionCategory = AVAudioSessionCategorySoloAmbient; + willPlayBackgroundMusic = YES; + } + + break; + } + + [self audioSessionSetCategory:_audioSessionCategory]; + +} + +/** + * This method is used to work around various bugs introduced in 4.x OS versions. In some circumstances the + * audio session is interrupted but never resumed, this results in the loss of OpenAL audio when following + * standard practices. If we detect this situation then we will attempt to resume the audio session ourselves. + * Known triggers: lock the device then unlock it (iOS 4.2 gm), playback a song using MPMediaPlayer (iOS 4.0) + */ +- (void) badAlContextHandler { + if (_interrupted && alcGetCurrentContext() == NULL) { + CDLOG(@"Denshion::CDAudioManager - bad OpenAL context detected, attempting to resume audio session"); + [self audioSessionResumed]; + } +} + +- (id) init: (tAudioManagerMode) mode { + if ((self = [super init])) { + + //Initialise the audio session + AVAudioSession* session = [AVAudioSession sharedInstance]; + session.delegate = self; + + _mode = mode; + backgroundMusicCompletionSelector = nil; + _isObservingAppEvents = FALSE; + _mute = NO; + _resigned = NO; + _interrupted = NO; + enabled_ = YES; + _audioSessionActive = NO; + [self setMode:mode]; + soundEngine = [[CDSoundEngine alloc] init]; + + //Set up audioSource channels + audioSourceChannels = [[NSMutableArray alloc] init]; + CDLongAudioSource *leftChannel = [[CDLongAudioSource alloc] init]; + leftChannel.backgroundMusic = YES; + CDLongAudioSource *rightChannel = [[CDLongAudioSource alloc] init]; + rightChannel.backgroundMusic = NO; + [audioSourceChannels insertObject:leftChannel atIndex:kASC_Left]; + [audioSourceChannels insertObject:rightChannel atIndex:kASC_Right]; + [leftChannel release]; + [rightChannel release]; + //Used to support legacy APIs + backgroundMusic = [self audioSourceForChannel:BACKGROUND_MUSIC_CHANNEL]; + backgroundMusic.delegate = self; + + //Add handler for bad al context messages, these are posted by the sound engine. + [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(badAlContextHandler) name:kCDN_BadAlContext object:nil]; + + } + return self; +} + +-(void) dealloc { + CDLOGINFO(@"Denshion::CDAudioManager - deallocating"); + [self stopBackgroundMusic]; + [soundEngine release]; + [[NSNotificationCenter defaultCenter] removeObserver:self]; + [self audioSessionSetActive:NO]; + [audioSourceChannels release]; + [super dealloc]; +} + +/** Retrieves the audio source for the specified channel */ +-(CDLongAudioSource*) audioSourceForChannel:(tAudioSourceChannel) channel +{ + return (CDLongAudioSource*)[audioSourceChannels objectAtIndex:channel]; +} + +/** Loads the data from the specified file path to the channel's audio source */ +-(CDLongAudioSource*) audioSourceLoad:(NSString*) filePath channel:(tAudioSourceChannel) channel +{ + CDLongAudioSource *audioSource = [self audioSourceForChannel:channel]; + if (audioSource) { + [audioSource load:filePath]; + } + return audioSource; +} + +-(BOOL) isBackgroundMusicPlaying { + return [self.backgroundMusic isPlaying]; +} + +//NB: originally I tried using a route change listener and intended to store the current route, +//however, on a 3gs running 3.1.2 no route change is generated when the user switches the +//ringer mute switch to off (i.e. enables sound) therefore polling is the only reliable way to +//determine ringer switch state +-(BOOL) isDeviceMuted { + +#if TARGET_IPHONE_SIMULATOR + //Calling audio route stuff on the simulator causes problems + return NO; +#else + CFStringRef newAudioRoute; + UInt32 propertySize = sizeof (CFStringRef); + + AudioSessionGetProperty ( + kAudioSessionProperty_AudioRoute, + &propertySize, + &newAudioRoute + ); + + if (newAudioRoute == NULL) { + //Don't expect this to happen but playing safe otherwise a null in the CFStringCompare will cause a crash + return YES; + } else { + CFComparisonResult newDeviceIsMuted = CFStringCompare ( + newAudioRoute, + (CFStringRef) @"", + 0 + ); + + return (newDeviceIsMuted == kCFCompareEqualTo); + } +#endif +} + +#pragma mark Audio Interrupt Protocol + +-(BOOL) mute { + return _mute; +} + +-(void) setMute:(BOOL) muteValue { + if (muteValue != _mute) { + _mute = muteValue; + [soundEngine setMute:muteValue]; + for( CDLongAudioSource *audioSource in audioSourceChannels) { + audioSource.mute = muteValue; + } + } +} + +-(BOOL) enabled { + return enabled_; +} + +-(void) setEnabled:(BOOL) enabledValue { + if (enabledValue != enabled_) { + enabled_ = enabledValue; + [soundEngine setEnabled:enabled_]; + for( CDLongAudioSource *audioSource in audioSourceChannels) { + audioSource.enabled = enabled_; + } + } +} + +-(CDLongAudioSource*) backgroundMusic +{ + return backgroundMusic; +} + +//Load background music ready for playing +-(void) preloadBackgroundMusic:(NSString*) filePath +{ + [self.backgroundMusic load:filePath]; +} + +-(void) playBackgroundMusic:(NSString*) filePath loop:(BOOL) loop +{ + [self.backgroundMusic load:filePath]; + + if (!willPlayBackgroundMusic || _mute) { + CDLOGINFO(@"Denshion::CDAudioManager - play bgm aborted because audio is not exclusive or sound is muted"); + return; + } + + if (loop) { + [self.backgroundMusic setNumberOfLoops:-1]; + } else { + [self.backgroundMusic setNumberOfLoops:0]; + } + [self.backgroundMusic play]; +} + +-(void) stopBackgroundMusic +{ + [self.backgroundMusic stop]; +} + +-(void) pauseBackgroundMusic +{ + [self.backgroundMusic pause]; +} + +-(void) resumeBackgroundMusic +{ + if (!willPlayBackgroundMusic || _mute) { + CDLOGINFO(@"Denshion::CDAudioManager - resume bgm aborted because audio is not exclusive or sound is muted"); + return; + } + + [self.backgroundMusic resume]; +} + +-(void) rewindBackgroundMusic +{ + [self.backgroundMusic rewind]; +} + +-(void) setBackgroundMusicCompletionListener:(id) listener selector:(SEL) selector { + backgroundMusicCompletionListener = listener; + backgroundMusicCompletionSelector = selector; +} + +/* + * Call this method to have the audio manager automatically handle application resign and + * become active. Pass a tAudioManagerResignBehavior to indicate the desired behavior + * for resigning and becoming active again. + * + * If autohandle is YES then the applicationWillResignActive and applicationDidBecomActive + * methods are automatically called, otherwise you must call them yourself at the appropriate time. + * + * Based on idea of Dominique Bongard + */ +-(void) setResignBehavior:(tAudioManagerResignBehavior) resignBehavior autoHandle:(BOOL) autoHandle { + + if (!_isObservingAppEvents && autoHandle) { + [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(applicationWillResignActive:) name:@"UIApplicationWillResignActiveNotification" object:nil]; + [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(applicationDidBecomeActive:) name:@"UIApplicationDidBecomeActiveNotification" object:nil]; + [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(applicationWillTerminate:) name:@"UIApplicationWillTerminateNotification" object:nil]; + _isObservingAppEvents = TRUE; + } + _resignBehavior = resignBehavior; +} + +- (void) applicationWillResignActive { + self->_resigned = YES; + + //Set the audio sesssion to one that allows sharing so that other audio won't be clobbered on resume + [self audioSessionSetCategory:AVAudioSessionCategoryAmbient]; + + switch (_resignBehavior) { + + case kAMRBStopPlay: + + for( CDLongAudioSource *audioSource in audioSourceChannels) { + if (audioSource.isPlaying) { + audioSource->systemPaused = YES; + audioSource->systemPauseLocation = audioSource.audioSourcePlayer.currentTime; + [audioSource stop]; + } else { + //Music is either paused or stopped, if it is paused it will be restarted + //by OS so we will stop it. + audioSource->systemPaused = NO; + [audioSource stop]; + } + } + break; + + case kAMRBStop: + //Stop music regardless of whether it is playing or not because if it was paused + //then the OS would resume it + for( CDLongAudioSource *audioSource in audioSourceChannels) { + [audioSource stop]; + } + + default: + break; + + } + CDLOGINFO(@"Denshion::CDAudioManager - handled resign active"); +} + +//Called when application resigns active only if setResignBehavior has been called +- (void) applicationWillResignActive:(NSNotification *) notification +{ + [self applicationWillResignActive]; +} + +- (void) applicationDidBecomeActive { + + if (self->_resigned) { + _resigned = NO; + //Reset the mode incase something changed with audio while we were inactive + [self setMode:_mode]; + switch (_resignBehavior) { + + case kAMRBStopPlay: + + //Music had been stopped but stop maintains current time + //so playing again will continue from where music was before resign active. + //We check if music can be played because while we were inactive the user might have + //done something that should force music to not play such as starting a track in the iPod + if (self.willPlayBackgroundMusic) { + for( CDLongAudioSource *audioSource in audioSourceChannels) { + if (audioSource->systemPaused) { + [audioSource resume]; + audioSource->systemPaused = NO; + } + } + } + break; + + default: + break; + + } + CDLOGINFO(@"Denshion::CDAudioManager - audio manager handled become active"); + } +} + +//Called when application becomes active only if setResignBehavior has been called +- (void) applicationDidBecomeActive:(NSNotification *) notification +{ + [self applicationDidBecomeActive]; +} + +//Called when application terminates only if setResignBehavior has been called +- (void) applicationWillTerminate:(NSNotification *) notification +{ + CDLOGINFO(@"Denshion::CDAudioManager - audio manager handling terminate"); + [self stopBackgroundMusic]; +} + +/** The audio source completed playing */ +- (void) cdAudioSourceDidFinishPlaying:(CDLongAudioSource *) audioSource { + CDLOGINFO(@"Denshion::CDAudioManager - audio manager got told background music finished"); + if (backgroundMusicCompletionSelector != nil) { + [backgroundMusicCompletionListener performSelector:backgroundMusicCompletionSelector]; + } +} + +-(void) beginInterruption { + CDLOGINFO(@"Denshion::CDAudioManager - begin interruption"); + [self audioSessionInterrupted]; +} + +-(void) endInterruption { + CDLOGINFO(@"Denshion::CDAudioManager - end interruption"); + [self audioSessionResumed]; +} + +#if __IPHONE_OS_VERSION_MAX_ALLOWED >= 40000 +-(void) endInterruptionWithFlags:(NSUInteger)flags { + CDLOGINFO(@"Denshion::CDAudioManager - interruption ended with flags %i",flags); + if (flags == AVAudioSessionInterruptionFlags_ShouldResume) { + [self audioSessionResumed]; + } +} +#endif + +-(void)audioSessionInterrupted +{ + if (!_interrupted) { + CDLOGINFO(@"Denshion::CDAudioManager - Audio session interrupted"); + _interrupted = YES; + + // Deactivate the current audio session + [self audioSessionSetActive:NO]; + + if (alcGetCurrentContext() != NULL) { + CDLOGINFO(@"Denshion::CDAudioManager - Setting OpenAL context to NULL"); + + ALenum error = AL_NO_ERROR; + + // set the current context to NULL will 'shutdown' openAL + alcMakeContextCurrent(NULL); + + if((error = alGetError()) != AL_NO_ERROR) { + CDLOG(@"Denshion::CDAudioManager - Error making context current %x\n", error); + } + #pragma unused(error) + } + } +} + +-(void)audioSessionResumed +{ + if (_interrupted) { + CDLOGINFO(@"Denshion::CDAudioManager - Audio session resumed"); + _interrupted = NO; + + BOOL activationResult = NO; + // Reactivate the current audio session + activationResult = [self audioSessionSetActive:YES]; + + //This code is to handle a problem with iOS 4.0 and 4.01 where reactivating the session can fail if + //task switching is performed too rapidly. A test case that reliably reproduces the issue is to call the + //iPhone and then hang up after two rings (timing may vary ;)) + //Basically we keep waiting and trying to let the OS catch up with itself but the number of tries is + //limited. + if (!activationResult) { + CDLOG(@"Denshion::CDAudioManager - Failure reactivating audio session, will try wait-try cycle"); + int activateCount = 0; + while (!activationResult && activateCount < 10) { + [NSThread sleepForTimeInterval:0.5]; + activationResult = [self audioSessionSetActive:YES]; + activateCount++; + CDLOGINFO(@"Denshion::CDAudioManager - Reactivation attempt %i status = %i",activateCount,activationResult); + } + } + + if (alcGetCurrentContext() == NULL) { + CDLOGINFO(@"Denshion::CDAudioManager - Restoring OpenAL context"); + ALenum error = AL_NO_ERROR; + // Restore open al context + alcMakeContextCurrent([soundEngine openALContext]); + if((error = alGetError()) != AL_NO_ERROR) { + CDLOG(@"Denshion::CDAudioManager - Error making context current%x\n", error); + } + #pragma unused(error) + } + } +} + ++(void) end { + [sharedManager release]; + sharedManager = nil; +} + +@end + +/////////////////////////////////////////////////////////////////////////////////////// +@implementation CDLongAudioSourceFader + +-(void) _setTargetProperty:(float) newVal { + ((CDLongAudioSource*)target).volume = newVal; +} + +-(float) _getTargetProperty { + return ((CDLongAudioSource*)target).volume; +} + +-(void) _stopTarget { + //Pause instead of stop as stop releases resources and causes problems in the simulator + [((CDLongAudioSource*)target) pause]; +} + +-(Class) _allowableType { + return [CDLongAudioSource class]; +} + +@end +/////////////////////////////////////////////////////////////////////////////////////// +@implementation CDBufferManager + +-(id) initWithEngine:(CDSoundEngine *) theSoundEngine { + if ((self = [super init])) { + soundEngine = theSoundEngine; + loadedBuffers = [[NSMutableDictionary alloc] initWithCapacity:CD_BUFFERS_START]; + freedBuffers = [[NSMutableArray alloc] init]; + nextBufferId = 0; + } + return self; +} + +-(void) dealloc { + [loadedBuffers release]; + [freedBuffers release]; + [super dealloc]; +} + +-(int) bufferForFile:(NSString*) filePath create:(BOOL) create { + + NSNumber* soundId = (NSNumber*)[loadedBuffers objectForKey:filePath]; + if(soundId == nil) + { + if (create) { + NSNumber* bufferId = nil; + //First try to get a buffer from the free buffers + if ([freedBuffers count] > 0) { + bufferId = [[[freedBuffers lastObject] retain] autorelease]; + [freedBuffers removeLastObject]; + CDLOGINFO(@"Denshion::CDBufferManager reusing buffer id %i",[bufferId intValue]); + } else { + bufferId = [[NSNumber alloc] initWithInt:nextBufferId]; + [bufferId autorelease]; + CDLOGINFO(@"Denshion::CDBufferManager generating new buffer id %i",[bufferId intValue]); + nextBufferId++; + } + + if ([soundEngine loadBuffer:[bufferId intValue] filePath:filePath]) { + //File successfully loaded + CDLOGINFO(@"Denshion::CDBufferManager buffer loaded %@ %@",bufferId,filePath); + [loadedBuffers setObject:bufferId forKey:filePath]; + return [bufferId intValue]; + } else { + //File didn't load, put buffer id on free list + [freedBuffers addObject:bufferId]; + return kCDNoBuffer; + } + } else { + //No matching buffer was found + return kCDNoBuffer; + } + } else { + return [soundId intValue]; + } +} + +-(void) releaseBufferForFile:(NSString *) filePath { + int bufferId = [self bufferForFile:filePath create:NO]; + if (bufferId != kCDNoBuffer) { + [soundEngine unloadBuffer:bufferId]; + [loadedBuffers removeObjectForKey:filePath]; + NSNumber *freedBufferId = [[NSNumber alloc] initWithInt:bufferId]; + [freedBufferId autorelease]; + [freedBuffers addObject:freedBufferId]; + } +} +@end + + + -- cgit 1.4.1