Classes/avTouchController.mm
/* |
File: avTouchController.mm |
Abstract: VBase app controller class |
Version: 1.4.3 |
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*/ |
#import "avTouchController.h" |
#include "CALevelMeter.h" |
// amount to skip on rewind or fast forward |
#define SKIP_TIME 1.0 |
// amount to play between skips |
#define SKIP_INTERVAL .2 |
@implementation avTouchController |
@synthesize fileName; |
@synthesize playButton; |
@synthesize ffwButton; |
@synthesize rewButton; |
@synthesize volumeSlider; |
@synthesize progressBar; |
@synthesize currentTime; |
@synthesize duration; |
@synthesize lvlMeter_in; |
@synthesize updateTimer; |
@synthesize inBackground; |
@synthesize player; |
void RouteChangeListener( void * inClientData, |
AudioSessionPropertyID inID, |
UInt32 inDataSize, |
const void * inData); |
-(void)updateCurrentTimeForPlayer:(AVAudioPlayer *)p |
{ |
currentTime.text = [NSString stringWithFormat:@"%d:%02d", (int)p.currentTime / 60, (int)p.currentTime % 60, nil]; |
progressBar.value = p.currentTime; |
} |
- (void)updateCurrentTime |
{ |
[self updateCurrentTimeForPlayer:self.player]; |
} |
- (void)updateViewForPlayerState:(AVAudioPlayer *)p |
{ |
[self updateCurrentTimeForPlayer:p]; |
if (updateTimer) |
[updateTimer invalidate]; |
if (p.playing) |
{ |
[playButton setImage:((p.playing == YES) ? pauseBtnBG : playBtnBG) forState:UIControlStateNormal]; |
[lvlMeter_in setPlayer:p]; |
updateTimer = [NSTimer scheduledTimerWithTimeInterval:.01 target:self selector:@selector(updateCurrentTime) userInfo:p repeats:YES]; |
} |
else |
{ |
[playButton setImage:((p.playing == YES) ? pauseBtnBG : playBtnBG) forState:UIControlStateNormal]; |
[lvlMeter_in setPlayer:nil]; |
updateTimer = nil; |
} |
} |
- (void)updateViewForPlayerStateInBackground:(AVAudioPlayer *)p |
{ |
[self updateCurrentTimeForPlayer:p]; |
if (p.playing) |
{ |
[playButton setImage:((p.playing == YES) ? pauseBtnBG : playBtnBG) forState:UIControlStateNormal]; |
} |
else |
{ |
[playButton setImage:((p.playing == YES) ? pauseBtnBG : playBtnBG) forState:UIControlStateNormal]; |
} |
} |
-(void)updateViewForPlayerInfo:(AVAudioPlayer*)p |
{ |
duration.text = [NSString stringWithFormat:@"%d:%02d", (int)p.duration / 60, (int)p.duration % 60, nil]; |
progressBar.maximumValue = p.duration; |
volumeSlider.value = p.volume; |
} |
- (void)rewind |
{ |
AVAudioPlayer *p = rewTimer.userInfo; |
p.currentTime-= SKIP_TIME; |
[self updateCurrentTimeForPlayer:p]; |
} |
- (void)ffwd |
{ |
AVAudioPlayer *p = ffwTimer.userInfo; |
p.currentTime+= SKIP_TIME; |
[self updateCurrentTimeForPlayer:p]; |
} |
- (void)awakeFromNib |
{ |
playBtnBG = [[UIImage imageNamed:@"play.png"] retain]; |
pauseBtnBG = [[UIImage imageNamed:@"pause.png"] retain]; |
[playButton setImage:playBtnBG forState:UIControlStateNormal]; |
[self registerForBackgroundNotifications]; |
updateTimer = nil; |
rewTimer = nil; |
ffwTimer = nil; |
duration.adjustsFontSizeToFitWidth = YES; |
currentTime.adjustsFontSizeToFitWidth = YES; |
progressBar.minimumValue = 0.0; |
// Load the the sample file, use mono or stero sample |
NSURL *fileURL = [[NSURL alloc] initFileURLWithPath: [[NSBundle mainBundle] pathForResource:@"sample" ofType:@"m4a"]]; |
//NSURL *fileURL = [[NSURL alloc] initFileURLWithPath: [[NSBundle mainBundle] pathForResource:@"sample2ch" ofType:@"m4a"]]; |
player = [[AVAudioPlayer alloc] initWithContentsOfURL:fileURL error:nil]; |
if (self.player != nil) { |
fileName.text = [NSString stringWithFormat: @"%@ (%d ch.)", [[player.url relativePath] lastPathComponent], player.numberOfChannels, nil]; |
[self updateViewForPlayerInfo:player]; |
[self updateViewForPlayerState:player]; |
player.numberOfLoops = 1; |
player.delegate = self; |
} |
[[AVAudioSession sharedInstance] setDelegate: self]; |
NSError *setCategoryError = nil; |
[[AVAudioSession sharedInstance] setCategory: AVAudioSessionCategoryPlayback error: &setCategoryError]; |
if (setCategoryError) NSLog(@"Error setting category! %d", setCategoryError.code); |
// we don't do anything special in the route change notification |
[[NSNotificationCenter defaultCenter] addObserver:self |
selector:@selector(handleRouteChange:) |
name:AVAudioSessionRouteChangeNotification |
object:nil]; |
[fileURL release]; |
} |
-(void)pausePlaybackForPlayer:(AVAudioPlayer*)p |
{ |
[p pause]; |
[self updateViewForPlayerState:p]; |
} |
-(void)startPlaybackForPlayer:(AVAudioPlayer*)p |
{ |
if ([p play]) |
{ |
[self updateViewForPlayerState:p]; |
} |
else |
NSLog(@"Could not play %@\n", p.url); |
} |
- (IBAction)playButtonPressed:(UIButton *)sender |
{ |
if (player.playing == YES) |
[self pausePlaybackForPlayer: player]; |
else |
[self startPlaybackForPlayer: player]; |
} |
- (IBAction)rewButtonPressed:(UIButton *)sender |
{ |
if (rewTimer) [rewTimer invalidate]; |
rewTimer = [NSTimer scheduledTimerWithTimeInterval:SKIP_INTERVAL target:self selector:@selector(rewind) userInfo:player repeats:YES]; |
} |
- (IBAction)rewButtonReleased:(UIButton *)sender |
{ |
if (rewTimer) [rewTimer invalidate]; |
rewTimer = nil; |
} |
- (IBAction)ffwButtonPressed:(UIButton *)sender |
{ |
if (ffwTimer) [ffwTimer invalidate]; |
ffwTimer = [NSTimer scheduledTimerWithTimeInterval:SKIP_INTERVAL target:self selector:@selector(ffwd) userInfo:player repeats:YES]; |
} |
- (IBAction)ffwButtonReleased:(UIButton *)sender |
{ |
if (ffwTimer) [ffwTimer invalidate]; |
ffwTimer = nil; |
} |
- (IBAction)volumeSliderMoved:(UISlider *)sender |
{ |
player.volume = [sender value]; |
} |
- (IBAction)progressSliderMoved:(UISlider *)sender |
{ |
player.currentTime = sender.value; |
[self updateCurrentTimeForPlayer:player]; |
} |
- (void)dealloc |
{ |
[[NSNotificationCenter defaultCenter] removeObserver:self]; |
[super dealloc]; |
[fileName release]; |
[playButton release]; |
[ffwButton release]; |
[rewButton release]; |
[volumeSlider release]; |
[progressBar release]; |
[currentTime release]; |
[duration release]; |
[lvlMeter_in release]; |
[updateTimer release]; |
[player release]; |
[playBtnBG release]; |
[pauseBtnBG release]; |
} |
#pragma mark AVAudioSession notification handlers |
- (void)handleRouteChange:(NSNotification *)notification |
{ |
UInt8 reasonValue = [[notification.userInfo valueForKey:AVAudioSessionRouteChangeReasonKey] intValue]; |
AVAudioSessionRouteDescription *routeDescription = [notification.userInfo valueForKey:AVAudioSessionRouteChangePreviousRouteKey]; |
NSLog(@"Route change:"); |
switch (reasonValue) { |
case AVAudioSessionRouteChangeReasonNewDeviceAvailable: |
NSLog(@" NewDeviceAvailable"); |
break; |
case AVAudioSessionRouteChangeReasonOldDeviceUnavailable: |
[self pausePlaybackForPlayer:player]; |
NSLog(@" OldDeviceUnavailable"); |
break; |
case AVAudioSessionRouteChangeReasonCategoryChange: |
NSLog(@" CategoryChange"); |
NSLog(@" New Category: %@", [[AVAudioSession sharedInstance] category]); |
break; |
case AVAudioSessionRouteChangeReasonOverride: |
NSLog(@" Override"); |
break; |
case AVAudioSessionRouteChangeReasonWakeFromSleep: |
NSLog(@" WakeFromSleep"); |
break; |
case AVAudioSessionRouteChangeReasonNoSuitableRouteForCategory: |
NSLog(@" NoSuitableRouteForCategory"); |
break; |
default: |
NSLog(@" ReasonUnknown"); |
} |
NSLog(@"Previous route:\n"); |
NSLog(@"%@", routeDescription); |
} |
#pragma mark AVAudioPlayer delegate methods |
- (void)audioPlayerDidFinishPlaying:(AVAudioPlayer *)p successfully:(BOOL)flag |
{ |
if (flag == NO) |
NSLog(@"Playback finished unsuccessfully"); |
[p setCurrentTime:0.]; |
if (inBackground) |
{ |
[self updateViewForPlayerStateInBackground:p]; |
} |
else |
{ |
[self updateViewForPlayerState:p]; |
} |
} |
- (void)playerDecodeErrorDidOccur:(AVAudioPlayer *)p error:(NSError *)error |
{ |
NSLog(@"ERROR IN DECODE: %@\n", error); |
} |
// we will only get these notifications if playback was interrupted |
- (void)audioPlayerBeginInterruption:(AVAudioPlayer *)p |
{ |
NSLog(@"Interruption begin. Updating UI for new state"); |
// the object has already been paused, we just need to update UI |
if (inBackground) { |
[self updateViewForPlayerStateInBackground:p]; |
} else { |
[self updateViewForPlayerState:p]; |
} |
} |
- (void)audioPlayerEndInterruption:(AVAudioPlayer *)p |
{ |
NSLog(@"Interruption ended. Resuming playback"); |
[self startPlaybackForPlayer:p]; |
} |
#pragma mark background notifications |
- (void)registerForBackgroundNotifications |
{ |
[[NSNotificationCenter defaultCenter] addObserver:self |
selector:@selector(setInBackgroundFlag) |
name:UIApplicationWillResignActiveNotification |
object:nil]; |
[[NSNotificationCenter defaultCenter] addObserver:self |
selector:@selector(clearInBackgroundFlag) |
name:UIApplicationWillEnterForegroundNotification |
object:nil]; |
} |
- (void)setInBackgroundFlag |
{ |
inBackground = true; |
} |
- (void)clearInBackgroundFlag |
{ |
inBackground = false; |
} |
@end |
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