other versions
| SND_PCM_PLAYBACK_DAT(9) | PCM API | SND_PCM_PLAYBACK_DAT(9) |
NAME¶
snd_pcm_playback_data - check whether any data exists on the playback buffer
SYNOPSIS¶
int snd_pcm_playback_data(struct snd_pcm_substream * substream);
ARGUMENTS¶
substream
the pcm substream instance
DESCRIPTION¶
Checks whether any data exists on the playback buffer.
RETURN¶
Non-zero if any data exists, or zero if not. If stop_threshold is bigger or equal to boundary, then this function returns always non-zero.
COPYRIGHT¶
| January 2017 | Kernel Hackers Manual 4.8. |