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alsa-mixer: Implement a new path option: "mute-during-activation".

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This commit is contained in:
Tanu Kaskinen 2012-03-22 11:29:10 +02:00 • committed by Tanu Kaskinen
parent ea064162a5
commit 8417cac4f6
5 changed files with 40 additions and 8 deletions
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30
src/modules/alsa/alsa-mixer.c
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@ -1196,7 +1196,7 @@ static int element_set_constant_volume(pa_alsa_element *e, snd_mixer_t *m) {
return r;
}
int pa_alsa_path_select(pa_alsa_path *p, snd_mixer_t *m) {
int pa_alsa_path_select(pa_alsa_path *p, snd_mixer_t *m, bool device_is_muted) {
pa_alsa_element *e;
int r = 0;
@ -1206,6 +1206,19 @@ int pa_alsa_path_select(pa_alsa_path *p, snd_mixer_t *m) {
pa_log_debug("Activating path %s", p->name);
pa_alsa_path_dump(p);
/* First turn on hw mute if available, to avoid noise
* when setting the mixer controls. */
if (p->mute_during_activation) {
PA_LLIST_FOREACH(e, p->elements) {
if (e->switch_use == PA_ALSA_SWITCH_MUTE)
/* If the muting fails here, that's not a critical problem for
* selecting a path, so we ignore the return value.
* element_set_switch() will print a warning anyway, so this
* won't be a silent failure either. */
(void) element_set_switch(e, m, FALSE);
}
}
PA_LLIST_FOREACH(e, p->elements) {
switch (e->switch_use) {
@ -1244,6 +1257,16 @@ int pa_alsa_path_select(pa_alsa_path *p, snd_mixer_t *m) {
return -1;
}
/* Finally restore hw mute to the device mute status. */
if (p->mute_during_activation) {
PA_LLIST_FOREACH(e, p->elements) {
if (e->switch_use == PA_ALSA_SWITCH_MUTE) {
if (element_set_switch(e, m, !device_is_muted) < 0)
return -1;
}
}
}
return 0;
}
@ -2353,12 +2376,14 @@ pa_alsa_path* pa_alsa_path_new(const char *paths_dir, const char *fname, pa_alsa
char *fn;
int r;
const char *n;
bool mute_during_activation = false;
pa_config_item items[] = {
/* [General] */
{ "priority", pa_config_parse_unsigned, NULL, "General" },
{ "description", pa_config_parse_string, NULL, "General" },
{ "name", pa_config_parse_string, NULL, "General" },
{ "mute-during-activation", pa_config_parse_bool, NULL, "General" },
/* [Option ...] */
{ "priority", option_parse_priority, NULL, NULL },
@ -2395,6 +2420,7 @@ pa_alsa_path* pa_alsa_path_new(const char *paths_dir, const char *fname, pa_alsa
items[0].data = &p->priority;
items[1].data = &p->description;
items[2].data = &p->name;
items[3].data = &mute_during_activation;
if (!paths_dir)
paths_dir = get_default_paths_dir();
@ -2407,6 +2433,8 @@ pa_alsa_path* pa_alsa_path_new(const char *paths_dir, const char *fname, pa_alsa
if (r < 0)
goto fail;
p->mute_during_activation = mute_during_activation;
if (path_verify(p) < 0)
goto fail;