176 lines
4.8 KiB
Objective-C
176 lines
4.8 KiB
Objective-C
//
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// Copyright (c) 2017 Open Whisper Systems. All rights reserved.
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//
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#import "OWSAudioAttachmentPlayer.h"
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#import "Signal-Swift.h"
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#import "TSAttachmentStream.h"
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#import "ViewControllerUtils.h"
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#import <AVFoundation/AVFoundation.h>
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#import <SignalServiceKit/NSTimer+OWS.h>
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NS_ASSUME_NONNULL_BEGIN
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@interface OWSAudioAttachmentPlayer () <AVAudioPlayerDelegate>
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@property (nonatomic, readonly) NSURL *mediaUrl;
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@property (nonatomic, nullable) AVAudioPlayer *audioPlayer;
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@property (nonatomic, nullable) NSTimer *audioPlayerPoller;
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@end
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#pragma mark -
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@implementation OWSAudioAttachmentPlayer
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- (instancetype)initWithMediaUrl:(NSURL *)mediaUrl delegate:(id<OWSAudioAttachmentPlayerDelegate>)delegate
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{
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self = [super init];
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if (!self) {
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return self;
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}
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OWSAssert(mediaUrl);
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OWSAssert(delegate);
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_delegate = delegate;
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_mediaUrl = mediaUrl;
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[[NSNotificationCenter defaultCenter] addObserver:self
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selector:@selector(applicationDidEnterBackground:)
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name:UIApplicationDidEnterBackgroundNotification
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object:nil];
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return self;
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}
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- (void)dealloc
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{
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[[NSNotificationCenter defaultCenter] removeObserver:self];
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[DeviceSleepManager.sharedInstance removeBlockWithBlockObject:self];
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[self stop];
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}
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- (void)applicationDidEnterBackground:(NSNotification *)notification
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{
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[self stop];
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}
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#pragma mark - Methods
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- (void)play
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{
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OWSAssert([NSThread isMainThread]);
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OWSAssert(self.mediaUrl);
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OWSAssert([self.delegate audioPlaybackState] != AudioPlaybackState_Playing);
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[ViewControllerUtils setAudioIgnoresHardwareMuteSwitch:YES];
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[self.audioPlayerPoller invalidate];
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self.delegate.audioPlaybackState = AudioPlaybackState_Playing;
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if (!self.audioPlayer) {
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NSError *error;
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self.audioPlayer = [[AVAudioPlayer alloc] initWithContentsOfURL:self.mediaUrl error:&error];
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if (error) {
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DDLogError(@"%@ error: %@", self.tag, error);
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[self stop];
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if ([error.domain isEqualToString:NSOSStatusErrorDomain]
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&& (error.code == kAudioFileInvalidFileError || error.code == kAudioFileStreamError_InvalidFile)) {
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[OWSAlerts showAlertWithTitle:NSLocalizedString(@"ALERT_ERROR_TITLE", @"")
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message:NSLocalizedString(@"INVALID_AUDIO_FILE_ALERT_ERROR_MESSAGE",
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@"Message for the alert indicating that an audio file is invalid.")];
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}
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return;
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}
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self.audioPlayer.delegate = self;
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}
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[self.audioPlayer prepareToPlay];
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[self.audioPlayer play];
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[self.audioPlayerPoller invalidate];
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self.audioPlayerPoller = [NSTimer weakScheduledTimerWithTimeInterval:.05f
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target:self
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selector:@selector(audioPlayerUpdated:)
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userInfo:nil
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repeats:YES];
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// Prevent device from sleeping while playing audio.
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[DeviceSleepManager.sharedInstance addBlockWithBlockObject:self];
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}
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- (void)pause
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{
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OWSAssert([NSThread isMainThread]);
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self.delegate.audioPlaybackState = AudioPlaybackState_Paused;
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[self.audioPlayer pause];
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[self.audioPlayerPoller invalidate];
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[self.delegate setAudioProgress:[self.audioPlayer currentTime] duration:[self.audioPlayer duration]];
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[DeviceSleepManager.sharedInstance removeBlockWithBlockObject:self];
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}
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- (void)stop
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{
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OWSAssert([NSThread isMainThread]);
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self.delegate.audioPlaybackState = AudioPlaybackState_Stopped;
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[self.audioPlayer pause];
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[self.audioPlayerPoller invalidate];
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[self.delegate setAudioProgress:0 duration:0];
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[DeviceSleepManager.sharedInstance removeBlockWithBlockObject:self];
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}
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- (void)togglePlayState
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{
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OWSAssert([NSThread isMainThread]);
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if (self.delegate.audioPlaybackState == AudioPlaybackState_Playing) {
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[self pause];
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} else {
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[self play];
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}
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}
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#pragma mark - Events
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- (void)audioPlayerUpdated:(NSTimer *)timer
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{
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OWSAssert([NSThread isMainThread]);
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OWSAssert(self.audioPlayer);
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OWSAssert(self.audioPlayerPoller);
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[self.delegate setAudioProgress:[self.audioPlayer currentTime] duration:[self.audioPlayer duration]];
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}
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- (void)audioPlayerDidFinishPlaying:(AVAudioPlayer *)player successfully:(BOOL)flag
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{
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OWSAssert([NSThread isMainThread]);
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[self stop];
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}
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#pragma mark - Logging
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+ (NSString *)tag
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{
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return [NSString stringWithFormat:@"[%@]", self.class];
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}
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- (NSString *)tag
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{
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return self.class.tag;
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}
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@end
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NS_ASSUME_NONNULL_END
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