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pcm: improve handling for snd_pcm_wait()

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The snd_pcm_wait() function is called also internally from
the various plugins to wait for the drain with -1 and from i/o
routines in pcm.c.

Define two special negative timeout values to distinguish the
drain and i/o wait and calculate the maximal timeout according
the wait place.

Fixes: https://github.com/alsa-project/alsa-lib/issues/228
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
This commit is contained in:
Jaroslav Kysela 2023-05-02 16:56:49 +02:00
parent 1de6f99c7d
commit e2d9e41174
9 changed files with 55 additions and 10 deletions
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2
src/pcm/pcm_dshare.c
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@ -400,7 +400,7 @@ static int __snd_pcm_dshare_drain(snd_pcm_t *pcm)
}
if (dshare->state == SND_PCM_STATE_DRAINING) {
snd_pcm_dshare_sync_area(pcm);
snd_pcm_wait_nocheck(pcm, -1);
snd_pcm_wait_nocheck(pcm, SND_PCM_WAIT_DRAIN);
snd_pcm_direct_clear_timer_queue(dshare); /* force poll to wait */
switch (snd_pcm_state(dshare->spcm)) {