mirrors/alsa-lib
1
0
Fork 0
mirror of https://github.com/alsa-project/alsa-lib.git synced 2025-10-31 22:25:35 -04:00
Code Issues Projects Releases Packages Wiki Activity Actions 1

Added mmap_avail() check to snd_pcm_wait() function

Browse source
This commit is contained in:
Jaroslav Kysela 2004-03-23 13:29:52 +00:00
parent 7c201b510a
commit f70e0fd468
1 changed files with 14 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

14
src/pcm/pcm.c
View file

@ -2066,6 +2066,20 @@ int snd_pcm_wait(snd_pcm_t *pcm, int timeout)
struct pollfd pfd; struct pollfd pfd;
unsigned short revents; unsigned short revents;
int err, err_poll; int err, err_poll;
if (snd_pcm_mmap_avail(pcm) >= pcm->avail_min) {
/* check more precisely */
switch (snd_pcm_state(pcm)) {
case SND_PCM_STATE_XRUN:
return -EPIPE;
case SND_PCM_STATE_SUSPENDED:
return -ESTRPIPE;
case SND_PCM_STATE_DISCONNECTED:
return -ENOTTY; /* linux VFS does this? */
default:
return 1;
}
}
err = snd_pcm_poll_descriptors(pcm, &pfd, 1); err = snd_pcm_poll_descriptors(pcm, &pfd, 1);
assert(err == 1); assert(err == 1);
err_poll = poll(&pfd, 1, timeout); err_poll = poll(&pfd, 1, timeout);