OOSoundChannel(Private) Category Reference

Instance Methods
(BOOL)	- enqueueBuffer:
(void)	- hasStopped
(void)	- getNextSoundBuffer

Detailed Description

Definition at line 33 of file OOALSoundChannel.m.

Method Documentation

enqueueBuffer:

- (BOOL) enqueueBuffer:

(OOSound *)

sound

Extends class OOSoundChannel.

Definition at line 1 of file OOALSoundChannel.m.

                      :(OOSound *)sound
{
    // get sound data
    _buffer = [sound soundBuffer];
    // bind sound data to buffer
    OOAL(alSourceQueueBuffers(_source, 1, &_buffer));
    ALuint error;
    if ((error = alGetError()) != AL_NO_ERROR)
    {
        OOLog(@"ov.debug", @"Error %u queueing buffers (_source: %u (%p), _buffer: %u (%p))",
                            error, _source, &_source, _buffer, &_buffer);
        return NO;
    }
    ALint playing = 0;
    OOAL(alGetSourcei(_source,AL_SOURCE_STATE,&playing));
    if (playing != AL_PLAYING)
    {
        OOAL(alSourcePlay(_source));
        if ((error = alGetError()) != AL_NO_ERROR)
        {
            OOLog(@"ov.debug",@"Error %d playing source",error);
            return NO;
        }
    }
    return YES;
}

getNextSoundBuffer

- (void) getNextSoundBuffer

Extends class OOSoundChannel.

Definition at line 1 of file OOALSoundChannel.m.

{
    if (!_bigSound)
    {
        // we've only loaded one buffer so far
        _bigSound = YES;
        _lastBuffer = _buffer;
        [self enqueueBuffer:_sound];
    }
    else
    {
        // _lastBuffer has something in it, so only queue up
        // another one if we've finished with that
        ALint processed = 0;
        OOAL(alGetSourcei(_source, AL_BUFFERS_PROCESSED, &processed));
        if (processed > 0) // slot free
        {
            // dequeue and delete lastBuffer
            ALuint buffer;
            OOAL(alSourceUnqueueBuffers(_source, 1, &buffer));
            assert(buffer == _lastBuffer);
            OOAL(alDeleteBuffers(1,&_lastBuffer));
            // shuffle along, and grab the next bit
            _lastBuffer = _buffer;
            [self enqueueBuffer:_sound];
        }
    }
}

hasStopped

- (void) hasStopped

Extends class OOSoundChannel.

Definition at line 1 of file OOALSoundChannel.m.

{
    ALint queued;
    OOAL(alGetSourcei(_source, AL_BUFFERS_QUEUED, &queued));
    
    while (queued--)
    {
        ALuint buffer;
        OOAL(alSourceUnqueueBuffers(_source, 1, &buffer));
    }
 
    OOAL(alDeleteBuffers(1,&_buffer));
    if (_bigSound)
    {
        // then we have two buffers to cleanup
        OOAL(alDeleteBuffers(1,&_lastBuffer));
    }
    _bigSound = NO;
 
 
    OOSound *sound = _sound;
    _sound = nil;
    
    if (nil != _delegate && [_delegate respondsToSelector:@selector(channel:didFinishPlayingSound:)])
    {
        [_delegate channel:self didFinishPlayingSound:sound];
    }
    [sound release];
}

---

The documentation for this category was generated from the following file:

• src/Core/OOALSoundChannel.m