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acp: try to set a verb before probing pro-audio devices

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Some UCM devices need to be configured with a verb before we can try probing
the pcms. Find the highest priority verb and set that.
This commit is contained in:
Wim Taymans 2023-08-07 12:56:24 +02:00
parent a1c109772b
commit 091b5497a3
1 changed files with 22 additions and 0 deletions
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22
spa/plugins/alsa/acp/acp.c
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@ -281,6 +281,18 @@ static void profile_free(void *data)
}
}
static const char *find_best_verb(pa_card *impl)
{
const char *res = NULL;
unsigned prio = 0;
pa_alsa_ucm_verb *verb;
PA_LLIST_FOREACH(verb, impl->ucm.verbs) {
if (verb->priority >= prio)
res = pa_proplist_gets(verb->proplist, PA_ALSA_PROP_UCM_NAME);
}
return res;
}
static int add_pro_profile(pa_card *impl, uint32_t index)
{
snd_ctl_t *ctl_hndl;
@ -293,6 +305,16 @@ static int add_pro_profile(pa_card *impl, uint32_t index)
pa_sample_spec ss;
snd_pcm_uframes_t try_period_size, try_buffer_size;
if (impl->use_ucm) {
const char *verb = find_best_verb(impl);
if (verb == NULL)
return -ENOTSUP;
if ((err = snd_use_case_set(impl->ucm.ucm_mgr, "_verb", verb)) < 0) {
pa_log_error("error setting verb: %s", snd_strerror(err));
return err;
}
}
ss.format = PA_SAMPLE_S32LE;
ss.rate = impl->rate;
ss.channels = impl->pro_channels;