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Try to catch certain driver errors

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... by verifying return values of snd_pcm_avail_update() and
snd_pcm_begin_mmap() for their sanenness.
This commit is contained in:
Lennart Poettering 2008-10-21 20:00:36 +02:00
parent 16471915af
commit ef9f3f6ec4
4 changed files with 69 additions and 6 deletions
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6
src/modules/module-alsa-source.c
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@ -255,7 +255,7 @@ static int mmap_read(struct userdata *u, pa_usec_t *sleep_usec) {
snd_pcm_hwsync(u->pcm_handle);
if (PA_UNLIKELY((n = snd_pcm_avail_update(u->pcm_handle)) < 0)) {
if (PA_UNLIKELY((n = pa_alsa_safe_avail_update(u->pcm_handle, u->hwbuf_size, &u->source->sample_spec)) < 0)) {
if ((r = try_recover(u, "snd_pcm_avail_update", (int) n)) == 0)
continue;
@ -282,7 +282,7 @@ static int mmap_read(struct userdata *u, pa_usec_t *sleep_usec) {
/* pa_log_debug("%lu frames to read", (unsigned long) frames); */
if (PA_UNLIKELY((err = snd_pcm_mmap_begin(u->pcm_handle, &areas, &offset, &frames)) < 0)) {
if (PA_UNLIKELY((err = pa_alsa_safe_mmap_begin(u->pcm_handle, &areas, &offset, &frames, u->hwbuf_size, &u->source->sample_spec)) < 0)) {
if ((r = try_recover(u, "snd_pcm_mmap_begin", err)) == 0)
continue;
@ -353,7 +353,7 @@ static int unix_read(struct userdata *u, pa_usec_t *sleep_usec) {
snd_pcm_hwsync(u->pcm_handle);
if (PA_UNLIKELY((n = snd_pcm_avail_update(u->pcm_handle)) < 0)) {
if (PA_UNLIKELY((n = pa_alsa_safe_avail_update(u->pcm_handle, u->hwbuf_size, &u->source->sample_spec)) < 0)) {
if ((r = try_recover(u, "snd_pcm_avail_update", (int) n)) == 0)
continue;