Ejemplos de sys_ringbuf_Init en C++ (Cpp)

Ejemplo n.º 1

Archivo: s_audio_pablio.c Proyecto: Tzero2/pd

/* Allocate buffer. */
static PaError PABLIO_InitFIFO( sys_ringbuf *rbuf, long numFrames, long bytesPerFrame )
{
    long numBytes = numFrames * bytesPerFrame;
    char *buffer = (char *) malloc( numBytes );
    if( buffer == NULL ) return paInsufficientMemory;
    memset( buffer, 0, numBytes );
    return (PaError) sys_ringbuf_Init( rbuf, numBytes, buffer );
}

Ejemplo n.º 2

Archivo: s_audio_pa.c Proyecto: ailo/pd-mousike

int pa_open_audio(int inchans, int outchans, int rate, t_sample *soundin,
    t_sample *soundout, int framesperbuf, int nbuffers,
    int indeviceno, int outdeviceno, t_audiocallback callbackfn)
{
    PaError err;
    int j, devno, pa_indev = -1, pa_outdev = -1;
    
    pa_callback = callbackfn;
    /* fprintf(stderr, "open callback %d\n", (callbackfn != 0)); */
    pa_init();
    /* post("in %d out %d rate %d device %d", inchans, outchans, rate, deviceno); */
    
    if (pa_stream)
        pa_close_audio();

    if (inchans > 0)
    {
        for (j = 0, devno = 0; j < Pa_GetDeviceCount(); j++)
        {
            const PaDeviceInfo *info = Pa_GetDeviceInfo(j);
            if (info->maxInputChannels > 0)
            {
                if (devno == indeviceno)
                {
                    if (inchans > info->maxInputChannels)
                      inchans = info->maxInputChannels;

                    pa_indev = j;
                    break;
                }
                devno++;
            }
        }
    }   
    
    if (outchans > 0)
    {
        for (j = 0, devno = 0; j < Pa_GetDeviceCount(); j++)
        {
            const PaDeviceInfo *info = Pa_GetDeviceInfo(j);
            if (info->maxOutputChannels > 0)
            {
                if (devno == outdeviceno)
                {
                    if (outchans > info->maxOutputChannels)
                      outchans = info->maxOutputChannels;

                    pa_outdev = j;
                    break;
                }
                devno++;
            }
        }
    }   

    if (inchans > 0 && pa_indev == -1)
        inchans = 0;
    if (outchans > 0 && pa_outdev == -1)
        outchans = 0;
    
    if (sys_verbose)
    {
        post("input device %d, channels %d", pa_indev, inchans);
        post("output device %d, channels %d", pa_outdev, outchans);
        post("framesperbuf %d, nbufs %d", framesperbuf, nbuffers);
    }
    pa_inchans = sys_inchannels = inchans;
    pa_outchans = sys_outchannels = outchans;
    pa_soundin = soundin;
    pa_soundout = soundout;

    if (pa_inbuf)
        free(pa_inbuf), pa_inbuf = 0;
    if (pa_outbuf)
        free(pa_outbuf), pa_outbuf = 0;
    
    if (! inchans && !outchans)
        return (0);
    
    if (callbackfn)
    {
        pa_callback = callbackfn;
        err = pa_open_callback(rate, inchans, outchans,
            framesperbuf, nbuffers, pa_indev, pa_outdev, pa_lowlevel_callback);
    }
    else
    {
        if (pa_inchans)
        {
            pa_inbuf = malloc(nbuffers*framesperbuf*pa_inchans*sizeof(float));
            sys_ringbuf_Init(&pa_inring,
                nbuffers*framesperbuf*pa_inchans*sizeof(float), pa_inbuf,
                    nbuffers*framesperbuf*pa_inchans*sizeof(float));
        }
        if (pa_outchans)
        {
            pa_outbuf = malloc(nbuffers*framesperbuf*pa_outchans*sizeof(float));
            sys_ringbuf_Init(&pa_outring,
                nbuffers*framesperbuf*pa_outchans*sizeof(float), pa_outbuf, 0);
        }
        err = pa_open_callback(rate, inchans, outchans,
            framesperbuf, nbuffers, pa_indev, pa_outdev, pa_fifo_callback);
    }
    if ( err != paNoError ) 
    {
        fprintf(stderr, "Error number %d opening portaudio stream\n",
            err); 
        fprintf( stderr, "Error message: %s\n", Pa_GetErrorText( err ) );
        Pa_Terminate();
        return (1);
    }
    else if (sys_verbose)
        post("... opened OK.");
    return (0);
}