snd_pcm_playback_data (9) - Linux Manuals
snd_pcm_playback_data: check whether any data exists on the playback buffer
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.
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