vlc-video: Enable audio track selection

plugins/vlc-video/data/locale/en-US.ini

@@ -12,3 +12,4 @@ Restart="Restart"
 Stop="Stop"
 PlaylistNext="Next"
 PlaylistPrev="Previous"
+AudioTrack="Audio Track"

plugins/vlc-video/vlc-video-source.c

@@ -18,6 +18,7 @@
 #define S_BEHAVIOR_PAUSE_UNPAUSE       "pause_unpause"
 #define S_BEHAVIOR_ALWAYS_PLAY         "always_play"
 #define S_NETWORK_CACHING              "network_caching"
+#define S_TRACK                        "track"
 
 #define T_(text) obs_module_text(text)
 #define T_PLAYLIST                     T_("Playlist")
@@ -28,6 +29,7 @@
 #define T_BEHAVIOR_PAUSE_UNPAUSE       T_("PlaybackBehavior.PauseUnpause")
 #define T_BEHAVIOR_ALWAYS_PLAY         T_("PlaybackBehavior.AlwaysPlay")
 #define T_NETWORK_CACHING              T_("NetworkCaching")
+#define T_TRACK                        T_("AudioTrack")
 
 /* ------------------------------------------------------------------------- */
 
@@ -403,7 +405,7 @@ static int vlcs_audio_setup(void **p_data, char *format, unsigned *rate,
 }
 
 static void add_file(struct vlc_source *c, struct darray *array,
-		const char *path, int network_caching)
+		const char *path, int network_caching, int track_index)
 {
 	DARRAY(struct media_file_data) new_files;
 	struct media_file_data data;
@@ -436,6 +438,11 @@ static void add_file(struct vlc_source *c, struct darray *array,
 					network_caching_option.array);
 			dstr_free(&network_caching_option);
 		}
+		struct dstr track_option = { 0 };
+		dstr_catf(&track_option,
+				":audio-track=%d", track_index - 1);
+		libvlc_media_add_option_(new_media, track_option.array);
+		dstr_free(&track_option);
 
 		data.path = new_path.array;
 		data.media = new_media;
@@ -490,6 +497,7 @@ static void vlcs_update(void *data, obs_data_t *settings)
 	const char *behavior;
 	size_t count;
 	int network_caching;
+	int track_index;
 
 	da_init(new_files);
 	da_init(old_files);
@@ -503,6 +511,8 @@ static void vlcs_update(void *data, obs_data_t *settings)
 
 	network_caching = (int)obs_data_get_int(settings, S_NETWORK_CACHING);
 
+	track_index = (int)obs_data_get_int(settings, S_TRACK);
+
 	if (astrcmpi(behavior, S_BEHAVIOR_PAUSE_UNPAUSE) == 0) {
 		c->behavior = BEHAVIOR_PAUSE_UNPAUSE;
 	} else if (astrcmpi(behavior, S_BEHAVIOR_ALWAYS_PLAY) == 0) {
@@ -540,13 +550,14 @@ static void vlcs_update(void *data, obs_data_t *settings)
 				dstr_cat_ch(&dir_path, '/');
 				dstr_cat(&dir_path, ent->d_name);
 				add_file(c, &new_files.da, dir_path.array,
-						network_caching);
+						network_caching, track_index);
 			}
 
 			dstr_free(&dir_path);
 			os_closedir(dir);
 		} else {
-			add_file(c, &new_files.da, path, network_caching);
+			add_file(c, &new_files.da, path, network_caching,
+					track_index);
 		}
 
 		obs_data_release(item);
@@ -833,6 +844,7 @@ static void vlcs_defaults(obs_data_t *settings)
 	obs_data_set_default_string(settings, S_BEHAVIOR,
 			S_BEHAVIOR_STOP_RESTART);
 	obs_data_set_default_int(settings, S_NETWORK_CACHING, 400);
+	obs_data_set_default_int(settings, S_TRACK, 1);
 }
 
 static obs_properties_t *vlcs_properties(void *data)
@@ -902,6 +914,7 @@ static obs_properties_t *vlcs_properties(void *data)
 
 	obs_properties_add_int(ppts, S_NETWORK_CACHING, T_NETWORK_CACHING,
 			100, 60000, 10);
+	obs_properties_add_int(ppts, S_TRACK, T_TRACK, 1, 10, 1);
 
 	return ppts;
 }