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alsa-ucm: Add enable, disable, status helpers for modifiers

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These are mostly the same as the device helpers added in c83b345169
("alsa-ucm: Add enable, disable, status helpers for devices"), but for
modifiers instead.

Signed-off-by: Alper Nebi Yasak <alpernebiyasak@gmail.com>
Part-of: <https://gitlab.freedesktop.org/pulseaudio/pulseaudio/-/merge_requests/742>
This commit is contained in:
Alper Nebi Yasak 2021-06-24 11:03:27 +03:00 • committed by PulseAudio Marge Bot
parent 3aaeb5113d
commit b382a00f8b
1 changed files with 54 additions and 14 deletions
Download patch file Download diff file Expand all files Collapse all files

68
src/modules/alsa/alsa-ucm.c
View file

@ -702,6 +702,57 @@ static int ucm_get_modifiers(pa_alsa_ucm_verb *verb, snd_use_case_mgr_t *uc_mgr)
return 0;
};
static long ucm_modifier_status(pa_alsa_ucm_config *ucm, pa_alsa_ucm_modifier *mod) {
const char *mod_name = pa_proplist_gets(mod->proplist, PA_ALSA_PROP_UCM_NAME);
char *modstatus;
long status = 0;
modstatus = pa_sprintf_malloc("_modstatus/%s", mod_name);
if (snd_use_case_geti(ucm->ucm_mgr, modstatus, &status) < 0) {
pa_log_debug("Failed to get status for UCM modifier %s", mod_name);
status = -1;
}
pa_xfree(modstatus);
return status;
}
static int ucm_modifier_disable(pa_alsa_ucm_config *ucm, pa_alsa_ucm_modifier *mod) {
const char *mod_name = pa_proplist_gets(mod->proplist, PA_ALSA_PROP_UCM_NAME);
/* We don't need to disable modifiers that are already disabled */
if (ucm_modifier_status(ucm, mod) == 0) {
pa_log_debug("UCM modifier %s is already disabled", mod_name);
return 0;
}
pa_log_debug("Disabling UCM modifier %s", mod_name);
if (snd_use_case_set(ucm->ucm_mgr, "_dismod", mod_name) < 0) {
pa_log("Failed to disable UCM modifier %s", mod_name);
return -1;
}
return 0;
}
static int ucm_modifier_enable(pa_alsa_ucm_config *ucm, pa_alsa_ucm_modifier *mod) {
const char *mod_name = pa_proplist_gets(mod->proplist, PA_ALSA_PROP_UCM_NAME);
/* We don't need to enable modifiers that are already enabled */
if (ucm_modifier_status(ucm, mod) > 0) {
pa_log_debug("UCM modifier %s is already enabled", mod_name);
return 0;
}
pa_log_debug("Enabling UCM modifier %s", mod_name);
if (snd_use_case_set(ucm->ucm_mgr, "_enamod", mod_name) < 0) {
pa_log("Failed to enable UCM modifier %s", mod_name);
return -1;
}
return 0;
}
static void add_role_to_device(pa_alsa_ucm_device *dev, const char *dev_name, const char *role_name, const char *role) {
const char *cur = pa_proplist_gets(dev->proplist, role_name);
@ -2298,12 +2349,7 @@ void pa_alsa_ucm_roled_stream_begin(pa_alsa_ucm_config *ucm, const char *role, p
PA_LLIST_FOREACH(mod, ucm->active_verb->modifiers) {
if ((mod->action_direction == dir) && (pa_streq(mod->media_role, role))) {
if (mod->enabled_counter == 0) {
const char *mod_name = pa_proplist_gets(mod->proplist, PA_ALSA_PROP_UCM_NAME);
pa_log_info("Enable ucm modifier %s", mod_name);
if (snd_use_case_set(ucm->ucm_mgr, "_enamod", mod_name) < 0) {
pa_log("Failed to enable ucm modifier %s", mod_name);
}
ucm_modifier_enable(ucm, mod);
}
mod->enabled_counter++;
@ -2323,14 +2369,8 @@ void pa_alsa_ucm_roled_stream_end(pa_alsa_ucm_config *ucm, const char *role, pa_
if ((mod->action_direction == dir) && (pa_streq(mod->media_role, role))) {
mod->enabled_counter--;
if (mod->enabled_counter == 0) {
const char *mod_name = pa_proplist_gets(mod->proplist, PA_ALSA_PROP_UCM_NAME);
pa_log_info("Disable ucm modifier %s", mod_name);
if (snd_use_case_set(ucm->ucm_mgr, "_dismod", mod_name) < 0) {
pa_log("Failed to disable ucm modifier %s", mod_name);
}
}
if (mod->enabled_counter == 0)
ucm_modifier_disable(ucm, mod);
break;
}