objective-c - 使用EZAudio播放器播放音频时出错

-(void)initializesEZAudio { AVAudioSession *session = [AVAudioSession sharedInstance]; NSError *error; [session setCategory:AVAudioSessionCategoryPlayback error:&error]; if (error) { NSLog(@"Error setting up audio session category: %@", error.localizedDescription); } [session setActive:YES error:&error]; if (error) { NSLog(@"Error setting up audio session active: %@", error.localizedDescription); } // Customizing the audio plot's look self.audioPlot.backgroundColor = [UIColor clearColor]; self.audioPlot.color = [UIColor colorWithRed:1.0 green:1.0 blue:1.0 alpha:1.0]; self.audioPlot.plotType = EZPlotTypeBuffer; self.audioPlot.shouldFill = YES; self.audioPlot.shouldMirror = YES; NSLog(@"outputs: %@", [EZAudioDevice outputDevices]); self.player = [EZAudioPlayer audioPlayerWithDelegate:self]; [session overrideOutputAudioPort:AVAudioSessionPortOverrideSpeaker error:&error]; if (error) { NSLog(@"Error overriding output to the speaker: %@", error.localizedDescription); } // // Listen for EZAudioPlayer notifications // [self setupNotificationsForPlay]; //[self setupNotificationsForRecord]; /* Try opening the sample file */ //[self.microphone startFetchingAudio]; } - (void) output:(EZOutput *)output playedAudio:(float **)buffer withBufferSize:(UInt32)bufferSize withNumberOfChannels:(UInt32)numberOfChannels { __weak typeof (self) weakSelf = self; dispatch_async(dispatch_get_main_queue(), ^{ // Update plot, buffer[0] = left channel, buffer[1] = right channel }); } - (void)setupNotificationsForPlay { [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(audioPlayerDidChangeAudioFile:) name:EZAudioPlayerDidChangeAudioFileNotification object:self.player]; [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(audioPlayerDidChangeOutputDevice:) name:EZAudioPlayerDidChangeOutputDeviceNotification object:self.player]; [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(audioPlayerDidChangePlayState:) name:EZAudioPlayerDidChangePlayStateNotification object:self.player]; }

- (void)audioPlayerDidChangeAudioFile:(NSNotification *)notification { EZAudioPlayer *player = [notification object]; NSLog(@"Player changed audio file: %@", [player audioFile]); } //------------------------------------------------------------------------------ - (void)audioPlayerDidChangeOutputDevice:(NSNotification *)notification { EZAudioPlayer *player = [notification object]; NSLog(@"Player changed output device: %@", [player device]); } - (void)audioPlayerDidChangePlayState:(NSNotification *)notification { EZAudioPlayer *player = [notification object]; NSLog(@"Player change play state, isPlaying: %i", [player isPlaying]); } - (void)openFileWithFilePathURL:(NSURL *)filePathURL { _audioFile = [EZAudioFile audioFileWithURL:filePathURL]; // // Plot the whole waveform _audioPlot.plotType = EZPlotTypeBuffer; _audioPlot.shouldFill = YES; _audioPlot.shouldMirror = YES; __weak typeof (self) weakSelf = self; [self.audioFile getWaveformDataWithCompletionBlock:^(float **waveformData, int length) { [weakSelf.audioPlot updateBuffer:waveformData[0] withBufferSize:length]; }]; // Play the audio file [_player setAudioFile:_audioFile]; } - (void) audioPlayer:(EZAudioPlayer *)audioPlayer playedAudio:(float **)buffer withBufferSize:(UInt32)bufferSize withNumberOfChannels:(UInt32)numberOfChannels inAudioFile:(EZAudioFile *)audioFile { __weak typeof (self) weakSelf = self; dispatch_async(dispatch_get_main_queue(), ^{ [weakSelf.audioPlot updateBuffer:buffer[0] withBufferSize:bufferSize]; }); } - (void)drawBufferPlot { self.audioPlot.plotType = EZPlotTypeBuffer; self.audioPlot.shouldMirror = NO; self.audioPlot.shouldFill = NO; } //------------------------------------------------------------------------------ - (void)drawRollingPlot { self.audioPlot.plotType = EZPlotTypeRolling; self.audioPlot.shouldFill = YES; self.audioPlot.shouldMirror = YES; } //---------------- Implmentation ------------------ - (IBAction)btn_record_activities:(id)c { if (isPlayable) { if ([state isEqualToString:@"IDLE"]) { state=[NSMutableString stringWithFormat:@"RECORDING"]; [_btn_record_activities setImage:[UIImage imageNamed:@"btn_recording.png"] forState:UIControlStateNormal]; [_view_state setBackgroundColor:[UIColor redColor]]; [_btn_state setImage:[UIImage imageNamed:@"state_recording_btn.png"] forState:UIControlStateNormal]; [self performSelectorOnMainThread:@selector(setUpAudioRecorder) withObject:nil waitUntilDone:YES]; recordingTimer= [NSTimer scheduledTimerWithTimeInterval:1.0 target:self selector:@selector(changeAudioProgress) userInfo:nil repeats:YES]; NSLog(@"recordingTimer %@",recordingTimer); } else if ([state isEqualToString:@"RECORDING"]) { _lbl_public.hidden=NO; _switch_public.hidden=NO; _btn_done.userInteractionEnabled =YES; state=[NSMutableString stringWithFormat:@"RECORDED"]; [_btn_record_activities setImage:[UIImage imageNamed:@"btn_recorded.png"] forState:UIControlStateNormal]; [_view_state setBackgroundColor:[UIColor whiteColor]]; [_btn_state setImage:[UIImage imageNamed:@"state_redo_btn.png"] forState:UIControlStateNormal]; [audioPlayer_ofstate stop]; [audioRecorder stop]; // [self playWave]; // [self.player pause]; for (int k=0; k<[arr_player_objects count]; k++) { [[arr_player_objects objectAtIndex:k] stop]; } } else if ([state isEqualToString:@"RECORDED"]) { state=[NSMutableString stringWithFormat:@"PLAYING"]; [_btn_record_activities setImage:[UIImage imageNamed:@"btn_playing.png"] forState:UIControlStateNormal]; [_view_state setBackgroundColor:[UIColor whiteColor]]; [_btn_state setImage:[UIImage imageNamed:@"new_state_listning_btn.png"] forState:UIControlStateNormal]; //----------loading files to player for playing--------// NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES); NSString *documentsDirectory = [paths objectAtIndex:0]; NSURL *url = [NSURL fileURLWithPath:[NSString stringWithFormat:@"%@/sounds.wav", documentsDirectory]]; //-------------------* Pass URL as Parameter *------------------ NSLog(@"kAudioFileDefault %@",kAudioFileDefault); [self openFileWithFilePathURL:[NSURL fileURLWithPath:[NSString stringWithFormat:@"%@/sounds.wav", documentsDirectory]]]; _player.delegate = self; NSError *error; audioPlayer_ofstate = [[AVAudioPlayer alloc] initWithContentsOfURL:url error:&error]; audioPlayer_ofstate.numberOfLoops = 0; audioPlayer_ofstate.delegate=self; audioPlayer_ofstate.volume=2.0; [audioPlayer_ofstate prepareToPlay]; NSLog(@"Playing......."); seconds=0; minutes=0; hours=0; recordingTimer= [NSTimer scheduledTimerWithTimeInterval:1.0 target:self selector:@selector(changeAudioProgress) userInfo:nil repeats:YES]; [self playWave]; [audioPlayer_ofstate play]; } else if ([state isEqualToString:@"PLAYING"]) { [recordingTimer invalidate]; seconds=0; minutes=0; hours=0; state=[NSMutableString stringWithFormat:@"RECORDED"]; [_btn_record_activities setImage:[UIImage imageNamed:@"btn_recorded.png"] forState:UIControlStateNormal]; [_view_state setBackgroundColor:[UIColor whiteColor]]; [_btn_state setImage:[UIImage imageNamed:@"state_redo_btn.png"] forState:UIControlStateNormal]; i=0; [audioPlayer_ofstate stop]; } else{ seconds=0; minutes=0; hours=0; [recordingTimer invalidate]; // [self initWaveViewMirror]; state=[NSMutableString stringWithFormat:@"IDLE"]; [_btn_record_activities setImage:[UIImage imageNamed:@"btn_ready_to_recording.png"] forState:UIControlStateNormal]; [_view_state setBackgroundColor:[UIColor whiteColor]]; [_btn_state setImage:[UIImage imageNamed:@"state_melody_btn.png"] forState:UIControlStateNormal]; } } else{ } }

-(void)playWave{ if ([_player isPlaying]) { [_player pause]; } else { if (self.audioPlot.shouldMirror && (self.audioPlot.plotType == EZPlotTypeBuffer)) { self.audioPlot.shouldMirror = NO; self.audioPlot.shouldFill = NO; } [_player play]; } }