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commit Leif's alsa patch, it actually makes Alsa work better

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Original commit message from CVS:
commit Leif's alsa patch, it actually makes Alsa work better
This commit is contained in:
Christian Schaller 2003-01-16 11:25:15 +00:00
parent e4d25f2f23
commit f18d6d3825
1 changed files with 9 additions and 6 deletions
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15
ext/alsa/gstalsa.c
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@ -818,6 +818,8 @@ gst_alsa_loop (GstElement *element)
} }
do { do {
xrun_detected = FALSE;
if (poll (&pfd, 1, 1000) < 0) { if (poll (&pfd, 1, 1000) < 0) {
if (errno == EINTR) { if (errno == EINTR) {
/* this happens mostly when run /* this happens mostly when run
@ -831,8 +833,7 @@ gst_alsa_loop (GstElement *element)
} }
if (pfd.revents & POLLERR) { if (pfd.revents & POLLERR) {
g_warning("alsa: poll reports error."); xrun_detected = TRUE;
return;
} }
if (pfd.revents == 0) { if (pfd.revents == 0) {
@ -843,15 +844,12 @@ gst_alsa_loop (GstElement *element)
continue; continue;
} }
xrun_detected = FALSE;
this->avail = snd_pcm_avail_update (this->handle); this->avail = snd_pcm_avail_update (this->handle);
DEBUG ("snd_pcm_avail_update() = %d", (int)this->avail); DEBUG ("snd_pcm_avail_update() = %d", (int)this->avail);
if (this->avail < 0) { if (this->avail < 0) {
if (this->avail == -EPIPE) { if (this->avail == -EPIPE) {
gst_alsa_xrun_recovery (this); xrun_detected = TRUE;
this->avail = 0;
} else { } else {
g_warning("unknown ALSA avail_update return value (%d)", g_warning("unknown ALSA avail_update return value (%d)",
(int)this->avail); (int)this->avail);
@ -859,6 +857,11 @@ gst_alsa_loop (GstElement *element)
} }
} }
if (xrun_detected) {
gst_alsa_xrun_recovery (this);
this->avail = 0;
}
/* round down to nearest period_frames avail */ /* round down to nearest period_frames avail */
this->avail -= this->avail % this->period_frames; this->avail -= this->avail % this->period_frames;