mirrors/pulseaudio
1
0
Fork 0
mirror of https://gitlab.freedesktop.org/pulseaudio/pulseaudio.git synced 2025-11-03 09:01:50 -05:00
Code Issues Projects Releases Packages Wiki Activity Actions

alsa: when probing for profiles configure buffer/period sizes since some broken drivers apparently need that

Browse source
This commit is contained in:
Lennart Poettering 2009-09-09 23:56:51 +02:00
parent 84ade2140e
commit 8364b959b4
3 changed files with 22 additions and 5 deletions
Download patch file Download diff file Expand all files Collapse all files

23
src/modules/alsa/alsa-mixer.c
View file

@ -3145,7 +3145,13 @@ fail:
return NULL;
}
void pa_alsa_profile_set_probe(pa_alsa_profile_set *ps, const char *dev_id, const pa_sample_spec *ss) {
void pa_alsa_profile_set_probe(
pa_alsa_profile_set *ps,
const char *dev_id,
const pa_sample_spec *ss,
unsigned default_n_fragments,
unsigned default_fragment_size_msec) {
void *state;
pa_alsa_profile *p, *last = NULL;
pa_alsa_mapping *m;
@ -3160,6 +3166,7 @@ void pa_alsa_profile_set_probe(pa_alsa_profile_set *ps, const char *dev_id, cons
PA_HASHMAP_FOREACH(p, ps->profiles, state) {
pa_sample_spec try_ss;
pa_channel_map try_map;
snd_pcm_uframes_t try_period_size, try_buffer_size;
uint32_t idx;
/* Is this already marked that it is supported? (i.e. from the config file) */
@ -3213,13 +3220,18 @@ void pa_alsa_profile_set_probe(pa_alsa_profile_set *ps, const char *dev_id, cons
try_ss = *ss;
try_ss.channels = try_map.channels;
try_period_size =
pa_usec_to_bytes(default_fragment_size_msec * PA_USEC_PER_MSEC, &try_ss) /
pa_frame_size(&try_ss);
try_buffer_size = default_n_fragments * try_period_size;
if (!(m ->output_pcm = pa_alsa_open_by_template(
m->device_strings,
dev_id,
NULL,
&try_ss, &try_map,
SND_PCM_STREAM_PLAYBACK,
NULL, NULL, 0, NULL, NULL,
&try_period_size, &try_buffer_size, 0, NULL, NULL,
TRUE))) {
p->supported = FALSE;
break;
@ -3237,13 +3249,18 @@ void pa_alsa_profile_set_probe(pa_alsa_profile_set *ps, const char *dev_id, cons
try_ss = *ss;
try_ss.channels = try_map.channels;
try_period_size =
pa_usec_to_bytes(default_fragment_size_msec*PA_USEC_PER_MSEC, &try_ss) /
pa_frame_size(&try_ss);
try_buffer_size = default_n_fragments * try_period_size;
if (!(m ->input_pcm = pa_alsa_open_by_template(
m->device_strings,
dev_id,
NULL,
&try_ss, &try_map,
SND_PCM_STREAM_CAPTURE,
NULL, NULL, 0, NULL, NULL,
&try_period_size, &try_buffer_size, 0, NULL, NULL,
TRUE))) {
p->supported = FALSE;
break;