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metadata: store default-nodes as JSON

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Don't just store the id in the metadata but a JSON object with
the node name. This makes it possible to easily introspect the
metadata and also extend the metadata with more fields later.

Instead of matching the metadata id to the global ids we now
have to match it against the name.
This commit is contained in:
Wim Taymans 2021-03-05 17:37:12 +01:00
parent 8d5cc7013d
commit c8fd34a41d
6 changed files with 462 additions and 202 deletions
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76
src/modules/module-protocol-pulse/pulse-server.c
View file

@ -139,8 +139,8 @@ struct client {
uint32_t subscribed;
struct pw_manager_object *metadata_default;
uint32_t default_sink;
uint32_t default_source;
char *default_sink;
char *default_source;
struct pw_manager_object *metadata_routes;
struct pw_properties *routes;
@ -899,25 +899,75 @@ static void manager_removed(void *data, struct pw_manager_object *o)
send_default_change_subscribe_event(client, object_is_sink(o), object_is_source_or_monitor(o));
}
static int json_object_find(const char *obj, const char *key, char *value, size_t len)
{
struct spa_json it[2];
const char *v;
char k[128];
spa_json_init(&it[0], obj, strlen(obj));
if (spa_json_enter_object(&it[0], &it[1]) <= 0)
return -EINVAL;
while (spa_json_get_string(&it[1], k, sizeof(k)-1) > 0) {
if (strcmp(k, key) == 0) {
if (spa_json_get_string(&it[1], value, len) <= 0)
continue;
return 0;
} else {
if (spa_json_next(&it[1], &v) <= 0)
break;
}
}
return -ENOENT;
}
static inline int strzcmp(const char *s1, const char *s2)
{
if (s1 == s2)
return 0;
if (s1 == NULL || s2 == NULL)
return 1;
return strcmp(s1, s2);
}
static void manager_metadata(void *data, struct pw_manager_object *o,
uint32_t subject, const char *key, const char *type, const char *value)
{
struct client *client = data;
uint32_t val;
bool changed = false;
pw_log_debug("meta id:%d subject:%d key:%s type:%s value:%s",
o->id, subject, key, type, value);
if (subject == PW_ID_CORE && o == client->metadata_default) {
val = (key && value) ? (uint32_t)atoi(value) : SPA_ID_INVALID;
char name[1024];
if (key == NULL || strcmp(key, "default.audio.sink") == 0) {
changed = client->default_sink != val;
client->default_sink = val;
if (value != NULL) {
if (json_object_find(value,
"name", name, sizeof(name)) < 0)
value = NULL;
else
value = name;
}
if ((changed = strzcmp(client->default_sink, value))) {
free(client->default_sink);
client->default_sink = strdup(value);
}
}
if (key == NULL || strcmp(key, "default.audio.source") == 0) {
changed = client->default_source != val;
client->default_source = val;
if (value != NULL) {
if (json_object_find(value,
"name", name, sizeof(name)) < 0)
value = NULL;
else
value = name;
}
if ((changed = strzcmp(client->default_source, value))) {
free(client->default_source);
client->default_source = strdup(value);
}
}
if (changed)
send_default_change_subscribe_event(client, true, true);
@ -2594,11 +2644,13 @@ static const char *get_default(struct client *client, bool sink)
spa_zero(sel);
if (sink) {
sel.type = object_is_sink;
sel.id = client->default_sink;
sel.key = PW_KEY_NODE_NAME;
sel.value = client->default_sink;
def = DEFAULT_SINK;
} else {
sel.type = object_is_source_or_monitor;
sel.id = client->default_source;
sel.key = PW_KEY_NODE_NAME;
sel.value = client->default_source;
def = DEFAULT_SOURCE;
}
sel.accumulate = select_best;
@ -4801,7 +4853,7 @@ static int do_set_default(struct client *client, uint32_t command, uint32_t tag,
if ((res = pw_manager_set_metadata(manager, client->metadata_default,
PW_ID_CORE,
sink ? METADATA_CONFIG_DEFAULT_SINK : METADATA_CONFIG_DEFAULT_SOURCE,
SPA_TYPE_INFO_BASE"Id", "%d", o->id)) < 0)
"Spa:String:JSON", "{ \"name\": \"%s\" }", name)) < 0)
return res;
return reply_simple_ack(client, tag);
@ -5280,6 +5332,8 @@ static void client_free(struct client *client)
client->disconnecting = true;
pw_core_disconnect(client->core);
}
free(client->default_sink);
free(client->default_source);
if (client->props)
pw_properties_free(client->props);
if (client->routes)