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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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18
src/modules/alsa/alsa-util.c
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@ -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 */