Playing sounds

[starwarsdevwookie59]

I'm trying to create a program that simply plays and stops sound. I've been using the AVFoundation framework, but it hasn't seemed very efficient. Can anybody give me some code to play and stop sound. please be specific as to what files to place code in. thank you.

this is the code we hav been using:

NSString *path = [[NSBundle mainBundle] pathForResource:@"uranus" ofType:@"wav"];
AVAudioPlayer* theAudio=[[AVAudioPlayer alloc] initWithContentsOfURL:[NSURL fileURLWithPath: path] error:NULL];
theAudio.delegate = self;
[theAudio play];

any help would be much appreciated.

[Knertified]

I wrote this code for someone else on here. He had good luck with it. This will randomly play 10 wave files named sound1.wav through sound10.wav. Maybe it will help a bit...

int randomNumber = arc4random() % 10;
			
NSString *tmpFileName = [[NSString alloc] initWithFormat:@"sound%d", randomNumber];
NSString *fileName = [[NSBundle mainBundle] pathForResource:tmpFileName ofType:@"wav"];
						
SystemSoundID soundID;
AudioServicesCreateSystemSoundID((CFURLRef)[NSURL fileURLWithPath:fileName], &soundID);
AudioServicesPlaySystemSound (soundID);
						
[tmpFileName release];

[starwarsdevwookie59]

thanks for your help. for anyone reading this, the code i ended up using to play "sound1.wav" was:

NSString *tmpFileName = [[NSString alloc] initWithFormat:@"sound1"];
NSString *fileName = [[NSBundle mainBundle] pathForResource:tmpFileName ofType:@"wav"];

SystemSoundID soundID;
AudioServicesCreateSystemSoundID((CFURLRef)[NSURL fileURLWithPath:fileName], &soundID);
AudioServicesPlaySystemSound (soundID);

[tmpFileName release];

[Bryan]

Originally Posted by starwarsdevwookie59

thanks for your help. for anyone reading this, the code i ended up using to play "sound1.wav" was:
NSString *tmpFileName = [[NSString alloc] initWithFormat:@"sound1"];
NSString *fileName = [[NSBundle mainBundle] pathForResource:tmpFileName ofType:@"wav"];

SystemSoundID soundID;
AudioServicesCreateSystemSoundID((CFURLRef)[NSURL fileURLWithPath:fileName], &soundID);
AudioServicesPlaySystemSound (soundID);

[tmpFileName release];

I am using this pattern to play audio. It works fine when initiated from a UI action such as pressing a button. I am implementing an animation sequence with sound in a thread which is dispatched as follows:

	[NSThread detachNewThreadSelector:@selector(displayAnimation:) toTarget:self withObject:nil];

Now, this all works fine. In my selector I have to call the following to get render to my view:

	for ( int i = 0; i < c; i++ ) {
		KeyFrame *frame = [frameArray objectAtIndex:i];
		
		int waitTime = [frame duration];
		UIImage *image = [frame image];
		
		[self performSelectorOnMainThread:@selector(drawFrame:) withObject:image waitUntilDone:YES];
		usleep(waitTime * 1000.0);
	}

I added the same pattern to play the sound thinking that it needs to be initiated from the main thread but nothing.

	if ( soundPath != nil ) {
		[self performSelectorOnMainThread:@selector(playSound:) withObject:soundPath waitUntilDone:YES];
	}

...

-(void) playSound:(id)path
{
	NSLog( @"Playing sound from path: %@\n", path );
	SystemSoundID soundID;
	AudioServicesCreateSystemSoundID((CFURLRef) [NSURL fileURLWithPath:path], &soundID);
	AudioServicesPlaySystemSound(soundID);	
}

I tried adding the code:

	NSString *soundPath = [[NSBundle mainBundle] pathForResource:@"you_are_nice" ofType:@"mp3"];
	SystemSoundID soundID;
	AudioServicesCreateSystemSoundID((CFURLRef) [NSURL fileURLWithPath:soundPath], &soundID);
	AudioServicesPlaySystemSound(soundID);

To the beginning of the viewDidLoad and still nothing. When I look at the package in ../Library/Application Support/iPhone Simulator/... I see the mp3 file so I am at a loss.

Any help debugging this or suggestions what to look at would be very grateful.

Thanks!
Bryan

[kgodard]

It might be because you're using the system sound, it's limited what kind of files you can play through that. I've got a way to play any sound file the iPhone can play on our site. Try that one out.

[Bryan]

You are correct - turns out that the AudioServices does not play compressed audio like MP3.

[shiva.0537]

Originally Posted by Knertified

I wrote this code for someone else on here. He had good luck with it. This will randomly play 10 wave files named sound1.wav through sound10.wav. Maybe it will help a bit...

int randomNumber = arc4random() % 10;
			
NSString *tmpFileName = [[NSString alloc] initWithFormat:@"sound%d", randomNumber];
NSString *fileName = [[NSBundle mainBundle] pathForResource:tmpFileName ofType:@"wav"];
						
SystemSoundID soundID;
AudioServicesCreateSystemSoundID((CFURLRef)[NSURL fileURLWithPath:fileName], &soundID);
AudioServicesPlaySystemSound (soundID);
						
[tmpFileName release];

Hi,

Will this code works with m4a format?
On simulator as well as on device?

Thanks
shiva