Name
snd_pcm_playback_empty — 
     check whether the playback buffer is empty
 
Synopsis
| int snd_pcm_playback_empty ( | struct snd_pcm_substream * substream ); | 
 
Arguments
- substream
- 
     the pcm substream instance
     
Description
   Checks whether the playback buffer is empty.
Return
   Non-zero if empty, or zero if not.