/* Returns the format pattern to fill or NULL if error.  */
const unsigned char* snd_pcm_format_silence_64(snd_pcm_format_t format)
/* Returns the format pattern to fill or NULL if error.  */
const unsigned char* snd_pcm_format_silence_64(snd_pcm_format_t format)
{
	if (format < 0 || format > SNDRV_PCM_FORMAT_LAST)
		return NULL;
	if (! pcm_formats[format].phys)
		return NULL;
	return pcm_formats[format].silence;
}