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pipewire: Update default audio devices during runtime

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Make the default device metadata node persist for the lifetime of the hotplug loop so the default source/sink devices will be updated if they change during runtime.
This commit is contained in:
Frank Praznik 2022-07-11 15:15:48 -04:00 committed by Ethan Lee
parent 60da11f0e2
commit 996cea31ee
1 changed files with 21 additions and 9 deletions
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30
src/audio/pipewire/SDL_pipewire.c
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@ -236,8 +236,9 @@ struct node_object
{
struct spa_list link;
Uint32 id;
int seq;
Uint32 id;
int seq;
SDL_bool persist;
/*
* NOTE: If used, this is *must* be allocated with SDL_malloc() or similar
@ -491,7 +492,7 @@ core_events_metadata_callback(void *object, uint32_t id, int seq)
{
struct node_object *node = object;
if (id == PW_ID_CORE && seq == node->seq) {
if (id == PW_ID_CORE && seq == node->seq && !node->persist) {
node_object_destroy(node);
}
}
@ -646,17 +647,21 @@ get_name_from_json(const char *json)
static int
metadata_property(void *object, Uint32 subject, const char *key, const char *type, const char *value)
{
struct node_object *node = object;
if (subject == PW_ID_CORE && key != NULL && value != NULL) {
if (!SDL_strcmp(key, "default.audio.sink")) {
if (pipewire_default_sink_id != NULL) {
SDL_free(pipewire_default_sink_id);
}
pipewire_default_sink_id = get_name_from_json(value);
node->persist = SDL_TRUE;
} else if (!SDL_strcmp(key, "default.audio.source")) {
if (pipewire_default_source_id != NULL) {
SDL_free(pipewire_default_source_id);
}
pipewire_default_source_id = get_name_from_json(value);
node->persist = SDL_TRUE;
}
}
@ -1286,31 +1291,38 @@ PIPEWIRE_GetDefaultAudioInfo(char **name, SDL_AudioSpec *spec, int iscapture)
{
struct io_node *node;
char *target;
int ret = 0;
PIPEWIRE_pw_thread_loop_lock(hotplug_loop);
if (iscapture) {
if (pipewire_default_source_id == NULL) {
return SDL_SetError("PipeWire could not find a default source");
ret = SDL_SetError("PipeWire could not find a default source");
goto failed;
}
target = pipewire_default_source_id;
} else {
if (pipewire_default_sink_id == NULL) {
return SDL_SetError("PipeWire could not find a default sink");
ret = SDL_SetError("PipeWire could not find a default sink");
goto failed;
}
target = pipewire_default_sink_id;
}
PIPEWIRE_pw_thread_loop_lock(hotplug_loop);
node = io_list_get(target);
if (node == NULL) {
PIPEWIRE_pw_thread_loop_unlock(hotplug_loop);
return SDL_SetError("PipeWire device list is out of sync with defaults");
ret = SDL_SetError("PipeWire device list is out of sync with defaults");
goto failed;
}
if (name != NULL) {
*name = SDL_strdup(node->name);
}
SDL_copyp(spec, &node->spec);
failed:
PIPEWIRE_pw_thread_loop_unlock(hotplug_loop);
return 0;
return ret;
}
static void