C++ (Cpp) audio_reset_parameters Examples

Example #1

File: mint.c Project: Deslon/Supernova

static int open_mint(out123_handle *ao)
{
	const char *dev = ao->device;

	if(!ai) return -1;
	if(!dev)
		dev = "/dev/audio";
	
	ao->fn = open(dev,O_WRONLY);  
	
	if(ao->fn < 0)
	{
		error1("Can't open %s!",dev);
		return -1;
	}
	ioctl(ao->fn, AIOCGBLKSIZE, &outburst);
	if(outburst > MAXOUTBURST)
		outburst = MAXOUTBURST;
	if(audio_reset_parameters(ai) < 0) {
		close(ao->fn);
		return -1;
	}
	
	return ao->fn;
}

Example #2

File: audio_alsa.c Project: gitpan/Audio-Play-MPG123

int audio_open(struct audio_info_struct *ai)
{
	int err;
	int card=0,device=0;
	char scard[128], sdevice[128];

	if(!ai)
		return -1;
	if(ai->device) {	/* parse ALSA device name */
		if(strchr(ai->device,':')) {	/* card with device */
			strncpy(scard, ai->device, sizeof(scard)-1);
			scard[sizeof(scard)-1] = '\0';
			if (strchr(scard,':')) *strchr(scard,':') = '\0';
			card = snd_card_name(scard);
			if (card < 0) {
				fprintf(stderr, "wrong soundcard number: %s\n", scard);
				exit(1);
			}
			strncpy(sdevice, strchr(ai->device, ':') + 1, sizeof(sdevice)-1);
		} else {
			strncpy(sdevice, ai->device, sizeof(sdevice)-1);
		}
		sdevice[sizeof(sdevice)-1] = '\0';
		device = atoi(sdevice);
		if (!isdigit(sdevice[0]) || device < 0 || device > 31) {
			fprintf(stderr, "wrong device number: %s\n", sdevice);
			exit(1);
		}
	}

	if((err=snd_pcm_open(&ai->handle, card, device, SND_PCM_OPEN_PLAYBACK)) < 0 )
	{
		fprintf(stderr, "open failed: %s\n", snd_strerror(err));
		exit(1);
	}

	if(audio_reset_parameters(ai) < 0)
	{
		audio_close(ai);
		return -1;
	}

	return 0;
}

Example #3

File: mint.c Project: 5py/libmpg123

static int open_mint(audio_output_t *ao)
{
	if(!ai) return -1;

	if(!ao->device)
		ao->device = "/dev/audio";
	
	ao->fn = open(ao->device,O_WRONLY);  
	
	if(ao->fn < 0)
	{
		error1("Can't open %s!",ao->device);
		return -1;
	}
	ioctl(ao->fn, AIOCGBLKSIZE, &outburst);
	if(outburst > MAXOUTBURST)
		outburst = MAXOUTBURST;
	if(audio_reset_parameters(ai) < 0) {
		close(ao->fn);
		return -1;
	}
	
	return ao->fn;
}

Example #4

File: audio_sun.c Project: retsyx/slapstick

int audio_open(struct audio_info_struct *ai)
{
  audio_info_t ainfo;

  if(!ai->device) {
    if(getenv("AUDIODEV")) {
      if(param.verbose > 1) 
         fprintf(stderr,"Using audio-device value from AUDIODEV environment variable!\n");
      ai->device = getenv("AUDIODEV");
    }
    else 
      ai->device = "/dev/audio";
  }

  ai->fn = open(ai->device,O_WRONLY);
  if(ai->fn < 0)
     return ai->fn;

#ifdef SUNOS
  {
    int type;
    if(ioctl(ai->fn, AUDIO_GETDEV, &type) == -1)
      return -1;
    if(type == AUDIO_DEV_UNKNOWN || type == AUDIO_DEV_AMD)
      return -1;
  }
#else
#if defined(SOLARIS) || defined(SPARCLINUX)
  {
    struct audio_device ad;
    if(ioctl(ai->fn, AUDIO_GETDEV, &ad) == -1)
      return -1;
    if(param.verbose > 1)
      fprintf(stderr,"Audio device type: %s\n",ad.name);
    if(!strstr(ad.name,"dbri") && !strstr(ad.name,"CS4231") && param.verbose)
      fprintf(stderr,"Warning: Unknown sound system %s. But we try it.\n",ad.name);
  }
#endif
#endif

  if(audio_reset_parameters(ai) < 0) {
    return -1;
  }

  AUDIO_INITINFO(&ainfo);

  if(ai->output > 0)
    ainfo.play.port = 0;
  if(ai->output & AUDIO_OUT_INTERNAL_SPEAKER)
    ainfo.play.port |= AUDIO_SPEAKER;
  if(ai->output & AUDIO_OUT_HEADPHONES)
    ainfo.play.port |= AUDIO_HEADPHONE;
  if(ai->output & AUDIO_OUT_LINE_OUT)
    ainfo.play.port |= AUDIO_LINE_OUT;

  if(ai->gain != -1)
    ainfo.play.gain = ai->gain;

  if(ioctl(ai->fn, AUDIO_SETINFO, &ainfo) == -1)
    return -1;

  return ai->fn;
}