libobs: Add dsk scene type

libobs/obs-scene.c

@@ -22,6 +22,7 @@
 #include "obs-scene.h"
 
 const struct obs_source_info group_info;
+const struct obs_source_info dsk_info;
 
 static void resize_group(obs_sceneitem_t *group);
 static void resize_scene(obs_scene_t *scene);
@@ -81,6 +82,12 @@ static const char *group_getname(void *unused)
 	return "Group";
 }
 
+static const char *dsk_getname(void *unused)
+{
+	UNUSED_PARAMETER(unused);
+	return "DSK";
+}
+
 static void *scene_create(obs_data_t *settings, struct obs_source *source)
 {
 	pthread_mutexattr_t attr;
@@ -92,6 +99,8 @@ static void *scene_create(obs_data_t *settings, struct obs_source *source)
 		scene->custom_size = true;
 		scene->cx = 0;
 		scene->cy = 0;
+	} else if (strcmp(source->info.id, dsk_info.id) == 0) {
+		scene->is_dsk = true;
 	}
 
 	signal_handler_add_array(obs_source_get_signal_handler(source),
@@ -1199,6 +1208,24 @@ const struct obs_source_info group_info = {
 	.enum_active_sources = scene_enum_active_sources,
 	.enum_all_sources = scene_enum_all_sources};
 
+const struct obs_source_info dsk_info = {
+	.id = "dsk",
+	.type = OBS_SOURCE_TYPE_SCENE,
+	.output_flags = OBS_SOURCE_VIDEO | OBS_SOURCE_CUSTOM_DRAW |
+			OBS_SOURCE_COMPOSITE,
+	.get_name = dsk_getname,
+	.create = scene_create,
+	.destroy = scene_destroy,
+	.video_tick = scene_video_tick,
+	.video_render = scene_video_render,
+	.audio_render = scene_audio_render,
+	.get_width = scene_getwidth,
+	.get_height = scene_getheight,
+	.load = scene_load,
+	.save = scene_save,
+	.enum_active_sources = scene_enum_active_sources,
+	.enum_all_sources = scene_enum_all_sources};
+
 static inline obs_scene_t *create_id(const char *id, const char *name)
 {
 	struct obs_source *source = obs_source_create(id, name, NULL, NULL);
@@ -1221,6 +1248,11 @@ obs_scene_t *obs_scene_create_private(const char *name)
 	return create_private_id("scene", name);
 }
 
+obs_scene_t *obs_dsk_create(const char *name)
+{
+	return create_id("dsk", name);
+}
+
 static obs_source_t *get_child_at_idx(obs_scene_t *scene, size_t idx)
 {
 	struct obs_scene_item *item = scene->first_item;
@@ -1425,6 +1457,14 @@ obs_scene_t *obs_group_from_source(const obs_source_t *source)
 	return source->context.data;
 }
 
+obs_scene_t *obs_dsk_from_source(const obs_source_t *source)
+{
+	if (!source || strcmp(source->info.id, dsk_info.id) != 0)
+		return NULL;
+
+	return source->context.data;
+}
+
 obs_sceneitem_t *obs_scene_find_source(obs_scene_t *scene, const char *name)
 {
 	struct obs_scene_item *item;
@@ -2995,6 +3035,16 @@ bool obs_scene_is_group(const obs_scene_t *scene)
 	return scene ? scene->is_group : false;
 }
 
+bool obs_source_is_dsk(const obs_source_t *source)
+{
+	return source && strcmp(source->info.id, dsk_info.id) == 0;
+}
+
+bool obs_scene_is_dsk(const obs_scene_t *scene)
+{
+	return scene ? scene->is_dsk : false;
+}
+
 void obs_sceneitem_group_enum_items(obs_sceneitem_t *group,
 				    bool (*callback)(obs_scene_t *,
 						     obs_sceneitem_t *, void *),

libobs/obs-scene.h

@@ -97,4 +97,6 @@ struct obs_scene {
 	pthread_mutex_t video_mutex;
 	pthread_mutex_t audio_mutex;
 	struct obs_scene_item *first_item;
+
+	bool is_dsk;
 };

libobs/obs-source.c

@@ -541,6 +541,8 @@ obs_source_t *obs_source_duplicate(obs_source_t *source, const char *new_name,
 		}
 		if (!scene)
 			scene = obs_group_from_source(source);
+		if (!scene)
+			scene = obs_dsk_from_source(source);
 		if (!scene)
 			return NULL;
 

libobs/obs.c

@@ -828,6 +828,7 @@ static inline void obs_free_hotkeys(void)
 
 extern const struct obs_source_info scene_info;
 extern const struct obs_source_info group_info;
+extern const struct obs_source_info dsk_info;
 
 static const char *submix_name(void *unused)
 {
@@ -875,6 +876,7 @@ static bool obs_init(const char *locale, const char *module_config_path,
 	obs->locale = bstrdup(locale);
 	obs_register_source(&scene_info);
 	obs_register_source(&group_info);
+	obs_register_source(&dsk_info);
 	obs_register_source(&audio_line_info);
 	add_default_module_paths();
 	return true;

libobs/obs.h

@@ -1499,6 +1499,8 @@ EXPORT void obs_transition_swap_end(obs_source_t *tr_dest,
  */
 EXPORT obs_scene_t *obs_scene_create(const char *name);
 
+EXPORT obs_scene_t *obs_dsk_create(const char *name);
+
 EXPORT obs_scene_t *obs_scene_create_private(const char *name);
 
 enum obs_scene_duplicate_type {
@@ -1702,6 +1704,12 @@ EXPORT obs_scene_t *obs_group_from_source(const obs_source_t *source);
 EXPORT void obs_sceneitem_defer_group_resize_begin(obs_sceneitem_t *item);
 EXPORT void obs_sceneitem_defer_group_resize_end(obs_sceneitem_t *item);
 
+/** Gets the dsk from its source, or NULL if not a dsk */
+EXPORT obs_scene_t *obs_dsk_from_source(const obs_source_t *source);
+
+EXPORT bool obs_source_is_dsk(const obs_source_t *source);
+EXPORT bool obs_scene_is_dsk(const obs_scene_t *scene);
+
 /* ------------------------------------------------------------------------- */
 /* Outputs */