class OSSRenderer : public SimpleModule {
public:
    OSSRenderer() { }
    
    void init();
    void process( const Frame &f );

    const char *name() { return "OSS Renderer"; }
    Format inputFormat() { return "FRAME_ID_PCM_AUDIO_DATA"; }
    Format outputFormat() { return "FRAME_ID_RENDERED_AUDIO"; }
    bool isBlocking() { return true; }
    
private:
    int fd;
};


void OSSRenderer::init()
{
    // Initialize OSS
    fd = open( "/dev/dsp", O_WRONLY );
    
    int format = AFMT_S16_LE;
    ioctl( fd, SNDCTL_DSP_SETFMT, &format );
    
    int channels = 2;
    ioctl( fd, SNDCTL_DSP_CHANNELS, &channels );
    
    int speed = 44100;
    ioctl( fd, SNDCTL_DSP_SPEED, &speed );
}

void OSSRenderer::process( const Frame &frame )
{
    // Render PCM to device
    PCMData *pcm = (PCMData*)frame.data();
    if ( write( fd, pcm->data, pcm->size ) == -1 )
        perror( "OSSRenderer::process( Frame )" );
    frame.deref();
}