libobs: Add func to enum active and inactive child tree

libobs/obs-source.c

@@ -2968,19 +2968,19 @@ struct source_enum_data {
 	void *param;
 };
 
-static void enum_source_tree_callback(obs_source_t *parent, obs_source_t *child,
-		void *param)
+static void enum_source_active_tree_callback(obs_source_t *parent,
+		obs_source_t *child, void *param)
 {
 	struct source_enum_data *data = param;
 	bool is_transition = child->info.type == OBS_SOURCE_TYPE_TRANSITION;
 
 	if (is_transition)
 		obs_transition_enum_sources(child,
-				enum_source_tree_callback, param);
+				enum_source_active_tree_callback, param);
 	if (child->info.enum_active_sources) {
 		if (child->context.data) {
 			child->info.enum_active_sources(child->context.data,
-					enum_source_tree_callback, data);
+					enum_source_active_tree_callback, data);
 		}
 	}
 
@@ -3027,11 +3027,67 @@ void obs_source_enum_active_tree(obs_source_t *source,
 	obs_source_addref(source);
 
 	if (source->info.type == OBS_SOURCE_TYPE_TRANSITION)
-		obs_transition_enum_sources(source, enum_source_tree_callback,
-				&data);
+		obs_transition_enum_sources(source,
+				enum_source_active_tree_callback, &data);
 	if (source->info.enum_active_sources)
 		source->info.enum_active_sources(source->context.data,
-				enum_source_tree_callback, &data);
+				enum_source_active_tree_callback, &data);
+
+	obs_source_release(source);
+}
+
+static void enum_source_full_tree_callback(obs_source_t *parent,
+		obs_source_t *child, void *param)
+{
+	struct source_enum_data *data = param;
+	bool is_transition = child->info.type == OBS_SOURCE_TYPE_TRANSITION;
+
+	if (is_transition)
+		obs_transition_enum_sources(child,
+				enum_source_full_tree_callback, param);
+	if (child->info.enum_all_sources) {
+		if (child->context.data) {
+			child->info.enum_active_sources(child->context.data,
+					enum_source_full_tree_callback, data);
+		}
+	} else if (child->info.enum_active_sources) {
+		if (child->context.data) {
+			child->info.enum_active_sources(child->context.data,
+					enum_source_full_tree_callback, data);
+		}
+	}
+
+	data->enum_callback(parent, child, data->param);
+}
+
+static void obs_source_enum_full_tree(obs_source_t *source,
+		obs_source_enum_proc_t enum_callback,
+		void *param)
+{
+	struct source_enum_data data = {enum_callback, param};
+	bool is_transition;
+
+	if (!data_valid(source, "obs_source_enum_active_tree"))
+		return;
+
+	is_transition = source->info.type == OBS_SOURCE_TYPE_TRANSITION;
+	if (!is_transition && !source->info.enum_active_sources)
+		return;
+
+	obs_source_addref(source);
+
+	if (source->info.type == OBS_SOURCE_TYPE_TRANSITION)
+		obs_transition_enum_sources(source,
+				enum_source_full_tree_callback, &data);
+
+	if (source->info.enum_all_sources) {
+		source->info.enum_all_sources(source->context.data,
+				enum_source_full_tree_callback, &data);
+
+	} else if (source->info.enum_active_sources) {
+		source->info.enum_active_sources(source->context.data,
+				enum_source_full_tree_callback, &data);
+	}
 
 	obs_source_release(source);
 }

libobs/obs-source.h

@@ -400,6 +400,21 @@ struct obs_source_info {
 	bool (*audio_render)(void *data, uint64_t *ts_out,
 			struct obs_source_audio_mix *audio_output,
 			uint32_t mixers, size_t channels, size_t sample_rate);
+
+	/**
+	 * Called to enumerate all active and inactive sources being used
+	 * within this source.  If this callback isn't implemented,
+	 * enum_active_sources will be called instead.
+	 *
+	 * This is typically used if a source can have inactive child sources.
+	 *
+	 * @param  data           Filter data
+	 * @param  enum_callback  Enumeration callback
+	 * @param  param          User data to pass to callback
+	 */
+	void (*enum_all_sources)(void *data,
+			obs_source_enum_proc_t enum_callback,
+			void *param);
 };
 
 EXPORT void obs_register_source_s(const struct obs_source_info *info,