snd_pcm_area_silence
snd_pcm_area_silence(&dst_channels->area, 0, frames, plugin->dst_format.format);
snd_pcm_area_silence(&dst_channels[channel].area, 0, frames, plugin->dst_format.format);
snd_pcm_area_silence(&dst_channels[channel].area, 0, frames, plugin->dst_format.format);
snd_pcm_area_silence(&dst_channels[channel].area, 0, frames, plugin->dst_format.format);
return snd_pcm_area_silence(dst_area, dst_offset, samples, format);
int snd_pcm_area_silence(const struct snd_pcm_channel_area *dst_channel,
snd_pcm_area_silence(&dst_channels[channel].area, 0, dst_frames, plugin->dst_format.format);
snd_pcm_area_silence(&dst_channels[channel].area, 0, dst_frames, plugin->dst_format.format);
snd_pcm_area_silence(&dvp->area, 0, frames, format);