libobs: Add obs_get_transition_by_name

docs/sphinx/reference-core.rst

@@ -262,6 +262,15 @@ Libobs Objects
 
 ---------------------
 
+.. function:: obs_source_t *obs_get_transition_by_name(const char *name)
+
+   Gets a transition by its name.
+  
+   Increments the source reference counter, use
+   :c:func:`obs_source_release()` to release it when complete.
+
+---------------------
+
 .. function:: obs_output_t *obs_get_output_by_name(const char *name)
 
    Gets an output by its name.

libobs/obs.c

@@ -1593,6 +1593,27 @@ obs_source_t *obs_get_source_by_name(const char *name)
 				   obs_source_addref_safe_);
 }
 
+obs_source_t *obs_get_transition_by_name(const char *name)
+{
+	struct obs_source **first = &obs->data.first_source;
+	struct obs_source *source;
+
+	pthread_mutex_lock(&obs->data.sources_mutex);
+
+	source = *first;
+	while (source) {
+		if (source->info.type == OBS_SOURCE_TYPE_TRANSITION &&
+		    strcmp(source->context.name, name) == 0) {
+			source = obs_source_addref_safe_(source);
+			break;
+		}
+		source = (void *)source->context.next;
+	}
+
+	pthread_mutex_unlock(&obs->data.sources_mutex);
+	return source;
+}
+
 obs_output_t *obs_get_output_by_name(const char *name)
 {
 	return get_context_by_name(&obs->data.first_output, name,

libobs/obs.h

@@ -636,6 +636,9 @@ EXPORT void obs_enum_services(bool (*enum_proc)(void *, obs_service_t *),
  */
 EXPORT obs_source_t *obs_get_source_by_name(const char *name);
 
+/** Get a transition source by its name. */
+EXPORT obs_source_t *obs_get_transition_by_name(const char *name);
+
 /** Gets an output by its name. */
 EXPORT obs_output_t *obs_get_output_by_name(const char *name);