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alsa-mixer: handle interface type (CARD,PCM) for mixer element lookups

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Signed-off-by: Jaroslav Kysela <perex@perex.cz>
This commit is contained in:
Jaroslav Kysela 2019-12-07 17:54:04 +01:00 • committed by Arun Raghavan
parent dacfcbb09c
commit f18b0c3402
5 changed files with 23 additions and 6 deletions
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2
src/modules/alsa/alsa-mixer.c
View file

@ -1907,7 +1907,7 @@ static int jack_probe(pa_alsa_jack *j, pa_alsa_mapping *mapping, snd_mixer_t *m)
j->append_pcm_to_name = false;
}
has_control = pa_alsa_mixer_find(m, j->alsa_name, 0) != NULL;
has_control = pa_alsa_mixer_find_card(m, j->alsa_name, 0) != NULL;
pa_alsa_jack_set_has_control(j, has_control);
if (j->has_control) {

2
src/modules/alsa/alsa-ucm.c
View file

@ -1796,7 +1796,7 @@ static void ucm_mapping_jack_probe(pa_alsa_mapping *m) {
mdev_opened = mdev;
}
has_control = pa_alsa_mixer_find(mixer_handle, dev->jack->alsa_name, 0) != NULL;
has_control = pa_alsa_mixer_find_card(mixer_handle, dev->jack->alsa_name, 0) != NULL;
pa_alsa_jack_set_has_control(dev->jack, has_control);
pa_log_info("UCM jack %s has_control=%d", dev->jack->name, dev->jack->has_control);
}

18
src/modules/alsa/alsa-util.c
View file

@ -1610,7 +1610,11 @@ bool pa_alsa_may_tsched(bool want) {
#define SND_MIXER_ELEM_PULSEAUDIO (SND_MIXER_ELEM_LAST + 10)
snd_mixer_elem_t *pa_alsa_mixer_find(snd_mixer_t *mixer, const char *name, unsigned int device) {
static snd_mixer_elem_t *pa_alsa_mixer_find(snd_mixer_t *mixer,
snd_ctl_elem_iface_t iface,
const char *name,
unsigned int index,
unsigned int device) {
snd_mixer_elem_t *elem;
for (elem = snd_mixer_first_elem(mixer); elem; elem = snd_mixer_elem_next(elem)) {
@ -1618,8 +1622,12 @@ snd_mixer_elem_t *pa_alsa_mixer_find(snd_mixer_t *mixer, const char *name, unsig
if (snd_mixer_elem_get_type(elem) != SND_MIXER_ELEM_PULSEAUDIO)
continue;
helem = snd_mixer_elem_get_private(elem);
if (snd_hctl_elem_get_interface(helem) != iface)
continue;
if (!pa_streq(snd_hctl_elem_get_name(helem), name))
continue;
if (snd_hctl_elem_get_index(helem) != index)
continue;
if (snd_hctl_elem_get_device(helem) != device)
continue;
return elem;
@ -1627,6 +1635,14 @@ snd_mixer_elem_t *pa_alsa_mixer_find(snd_mixer_t *mixer, const char *name, unsig
return NULL;
}
snd_mixer_elem_t *pa_alsa_mixer_find_card(snd_mixer_t *mixer, const char *name, unsigned int device) {
return pa_alsa_mixer_find(mixer, SND_CTL_ELEM_IFACE_CARD, name, 0, device);
}
snd_mixer_elem_t *pa_alsa_mixer_find_pcm(snd_mixer_t *mixer, const char *name, unsigned int device) {
return pa_alsa_mixer_find(mixer, SND_CTL_ELEM_IFACE_PCM, name, 0, device);
}
static int mixer_class_compare(const snd_mixer_elem_t *c1, const snd_mixer_elem_t *c2)
{
/* Dummy compare function */

3
src/modules/alsa/alsa-util.h
View file

@ -141,7 +141,8 @@ const char* pa_alsa_strerror(int errnum);
bool pa_alsa_may_tsched(bool want);
snd_mixer_elem_t *pa_alsa_mixer_find(snd_mixer_t *mixer, const char *name, unsigned int device);
snd_mixer_elem_t *pa_alsa_mixer_find_card(snd_mixer_t *mixer, const char *name, unsigned int device);
snd_mixer_elem_t *pa_alsa_mixer_find_pcm(snd_mixer_t *mixer, const char *name, unsigned int device);
snd_mixer_t *pa_alsa_open_mixer(int alsa_card_index, char **ctl_device);

4
src/modules/alsa/module-alsa-card.c
View file

@ -588,7 +588,7 @@ static void init_eld_ctls(struct userdata *u) {
if (device < 0)
continue;
melem = pa_alsa_mixer_find(u->mixer_handle, "ELD", device);
melem = pa_alsa_mixer_find_pcm(u->mixer_handle, "ELD", device);
if (melem) {
snd_mixer_elem_set_callback(melem, hdmi_eld_changed);
snd_mixer_elem_set_callback_private(melem, u);
@ -635,7 +635,7 @@ static void init_jacks(struct userdata *u) {
u->mixer_handle = pa_alsa_open_mixer(u->alsa_card_index, NULL);
if (u->mixer_handle && pa_alsa_fdlist_set_handle(u->mixer_fdl, u->mixer_handle, NULL, u->core->mainloop) >= 0) {
PA_HASHMAP_FOREACH(jack, u->jacks, state) {
jack->melem = pa_alsa_mixer_find(u->mixer_handle, jack->alsa_name, 0);
jack->melem = pa_alsa_mixer_find_card(u->mixer_handle, jack->alsa_name, 0);
if (!jack->melem) {
pa_log_warn("Jack '%s' seems to have disappeared.", jack->alsa_name);
pa_alsa_jack_set_has_control(jack, false);