libobs, docs: Add function to get source version

docs/sphinx/reference-sources.rst

@@ -892,6 +892,12 @@ General Source Functions
 
 ---------------------
 
+.. function:: uint32_t obs_source_get_version(const obs_source_t *source)
+
+   :return: Get version of a source
+
+---------------------
+
 .. function:: signal_handler_t *obs_source_get_signal_handler(const obs_source_t *source)
 
    :return: The source's signal handler

libobs/obs-source.c

@@ -5384,3 +5384,14 @@ void obs_source_restore_filters(obs_source_t *source, obs_data_array_t *array)
 
 	da_free(cur_filters);
 }
+
+uint32_t obs_source_get_version(const obs_source_t *source)
+{
+	if (!obs_source_valid(source, "obs_source_get_version"))
+		return 0;
+
+	if (!source->info.version)
+		return 1;
+
+	return source->info.version;
+}

libobs/obs.h

@@ -1177,6 +1177,9 @@ EXPORT void obs_source_remove_caption_callback(obs_source_t *source,
 					       obs_source_caption_t callback,
 					       void *param);
 
+/** Get version of a source **/
+EXPORT uint32_t obs_source_get_version(const obs_source_t *source);
+
 enum obs_deinterlace_mode {
 	OBS_DEINTERLACE_MODE_DISABLE,
 	OBS_DEINTERLACE_MODE_DISCARD,