C++ (Cpp) snd_pcm_hw_constraint_ratdens示例

示例#1

文件： capture.c 项目： 7799/linux

/* open capture callback */
static int snd_line6_capture_open(struct snd_pcm_substream *substream)
{
	int err;
	struct snd_pcm_runtime *runtime = substream->runtime;
	struct snd_line6_pcm *line6pcm = snd_pcm_substream_chip(substream);

	err = snd_pcm_hw_constraint_ratdens(runtime, 0,
					    SNDRV_PCM_HW_PARAM_RATE,
					    (&line6pcm->
					     properties->snd_line6_rates));
	if (err < 0)
		return err;

	runtime->hw = line6pcm->properties->snd_line6_capture_hw;
	return 0;
}

示例#2

文件： capture.c 项目： AlexShiLucky/linux

/* open capture callback */
static int snd_line6_capture_open(struct snd_pcm_substream *substream)
{
	int err;
	struct snd_pcm_runtime *runtime = substream->runtime;
	struct snd_line6_pcm *line6pcm = snd_pcm_substream_chip(substream);

	err = snd_pcm_hw_constraint_ratdens(runtime, 0,
					    SNDRV_PCM_HW_PARAM_RATE,
					    &line6pcm->properties->rates);
	if (err < 0)
		return err;

	line6_pcm_acquire(line6pcm, LINE6_STREAM_CAPTURE_HELPER, false);

	runtime->hw = line6pcm->properties->capture_hw;
	return 0;
}