[alsa-devel] snd_pcm_wait function
ennofennema at tele2.nl
Mon Nov 12 08:23:42 CET 2012
Thanks for your reply. I may not have expressed myself clearly. I appear
to have the opposite problem from Daniel Sanz re Non-blocking
snd_pcm_drain (also posted 10 Nov). He wants the new sound to start
immediately. I want to close the pcm AFTER the sound finished.
The docs say calling drain() puts the pcm in the DRAINING state. When I
obtain the state immediately after drain() it is already SETUP.
I hoped a state change from DRAINING to SETUP would be the right time
to close the pcm but there appears to be no such state change.
Currently I solved my problem by a usleep() based on an estimate of the
time needed to finish playing the last samples in the buffer.
If there is a more elegant way I would like to know. Otherwise I will
stick with usleep(),
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