vlc-source: Add media control hotkeys

This adds play/pause, restart, stop, next, and previous hotkeys to the
VLC source.

Closes jp9000/obs-studio#972

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

@@ -7,3 +7,8 @@ PlaybackBehavior.StopRestart="Stop when not visible, restart when visible"
 PlaybackBehavior.PauseUnpause="Pause when not visible, unpause when visible"
 PlaybackBehavior.AlwaysPlay="Always play even when not visible"
 NetworkCaching="Network Caching (ms)"
+PlayPause="Play/Pause"
+Restart="Restart"
+Stop="Stop"
+PlaylistNext="Next"
+PlaylistPrev="Previous"

plugins/vlc-video/vlc-video-plugin.c

@@ -53,6 +53,8 @@ LIBVLC_MEDIA_LIST_PLAYER_SET_MEDIA_PLAYER libvlc_media_list_player_set_media_pla
 LIBVLC_MEDIA_LIST_PLAYER_SET_MEDIA_LIST libvlc_media_list_player_set_media_list_;
 LIBVLC_MEDIA_LIST_PLAYER_EVENT_MANAGER libvlc_media_list_player_event_manager_;
 LIBVLC_MEDIA_LIST_PLAYER_SET_PLAYBACK_MODE libvlc_media_list_player_set_playback_mode_;
+LIBVLC_MEDIA_LIST_PLAYER_NEXT libvlc_media_list_player_next_;
+LIBVLC_MEDIA_LIST_PLAYER_PREVIOUS libvlc_media_list_player_previous_;
 
 void *libvlc_module = NULL;
 libvlc_instance_t *libvlc = NULL;
@@ -115,6 +117,8 @@ static bool load_vlc_funcs(void)
 	LOAD_VLC_FUNC(libvlc_media_list_player_set_media_list);
 	LOAD_VLC_FUNC(libvlc_media_list_player_event_manager);
 	LOAD_VLC_FUNC(libvlc_media_list_player_set_playback_mode);
+	LOAD_VLC_FUNC(libvlc_media_list_player_next);
+	LOAD_VLC_FUNC(libvlc_media_list_player_previous);
 	return true;
 }
 

plugins/vlc-video/vlc-video-plugin.h

@@ -111,6 +111,10 @@ typedef libvlc_event_manager_t *(*LIBVLC_MEDIA_LIST_PLAYER_EVENT_MANAGER)(
 typedef void (*LIBVLC_MEDIA_LIST_PLAYER_SET_PLAYBACK_MODE)(
 		libvlc_media_list_player_t *p_mlp,
 		libvlc_playback_mode_t e_mode);
+typedef int (*LIBVLC_MEDIA_LIST_PLAYER_NEXT)(
+		libvlc_media_list_player_t *p_mlp);
+typedef int (*LIBVLC_MEDIA_LIST_PLAYER_PREVIOUS)(
+		libvlc_media_list_player_t *p_mlp);
 
 /* -------------------------------------------------------------------- */
 
@@ -159,6 +163,8 @@ extern LIBVLC_MEDIA_LIST_PLAYER_SET_MEDIA_PLAYER libvlc_media_list_player_set_me
 extern LIBVLC_MEDIA_LIST_PLAYER_SET_MEDIA_LIST libvlc_media_list_player_set_media_list_;
 extern LIBVLC_MEDIA_LIST_PLAYER_EVENT_MANAGER libvlc_media_list_player_event_manager_;
 extern LIBVLC_MEDIA_LIST_PLAYER_SET_PLAYBACK_MODE libvlc_media_list_player_set_playback_mode_;
+extern LIBVLC_MEDIA_LIST_PLAYER_NEXT libvlc_media_list_player_next_;
+extern LIBVLC_MEDIA_LIST_PLAYER_PREVIOUS libvlc_media_list_player_previous_;
 
 #define EXTENSIONS_AUDIO \
 	"*.3ga;" \

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

@@ -57,6 +57,12 @@ struct vlc_source {
 	enum behavior behavior;
 	bool loop;
 	bool shuffle;
+
+	obs_hotkey_id play_pause_hotkey;
+	obs_hotkey_id restart_hotkey;
+	obs_hotkey_id stop_hotkey;
+	obs_hotkey_id playlist_next_hotkey;
+	obs_hotkey_id playlist_prev_hotkey;
 };
 
 static libvlc_media_t *get_media(struct darray *array, const char *path)
@@ -611,11 +617,133 @@ static void vlcs_stopped(const struct libvlc_event_t *event, void *data)
 	UNUSED_PARAMETER(event);
 }
 
+static void vlcs_play_pause(void *data)
+{
+	struct vlc_source *c = data;
+
+	libvlc_media_list_player_pause_(c->media_list_player);
+}
+
+static void vlcs_restart(void *data)
+{
+	struct vlc_source *c = data;
+
+	libvlc_media_list_player_stop_(c->media_list_player);
+	libvlc_media_list_player_play_(c->media_list_player);
+}
+
+static void vlcs_stop(void *data)
+{
+	struct vlc_source *c = data;
+
+	libvlc_media_list_player_stop_(c->media_list_player);
+	obs_source_output_video(c->source, NULL);
+}
+
+static void vlcs_playlist_next(void *data)
+{
+	struct vlc_source *c = data;
+
+	libvlc_media_list_player_next_(c->media_list_player);
+}
+
+static void vlcs_playlist_prev(void *data)
+{
+	struct vlc_source *c = data;
+
+	libvlc_media_list_player_previous_(c->media_list_player);
+}
+
+static void vlcs_play_pause_hotkey(void *data, obs_hotkey_id id,
+		obs_hotkey_t *hotkey, bool pressed)
+{
+	UNUSED_PARAMETER(id);
+	UNUSED_PARAMETER(hotkey);
+
+	struct vlc_source *c = data;
+
+	if (pressed && obs_source_active(c->source))
+		vlcs_play_pause(c);
+}
+
+static void vlcs_restart_hotkey(void *data, obs_hotkey_id id,
+		obs_hotkey_t *hotkey, bool pressed)
+{
+	UNUSED_PARAMETER(id);
+	UNUSED_PARAMETER(hotkey);
+
+	struct vlc_source *c = data;
+
+	if (pressed && obs_source_active(c->source))
+		vlcs_restart(c);
+}
+
+static void vlcs_stop_hotkey(void *data, obs_hotkey_id id,
+		obs_hotkey_t *hotkey, bool pressed)
+{
+	UNUSED_PARAMETER(id);
+	UNUSED_PARAMETER(hotkey);
+
+	struct vlc_source *c = data;
+
+	if (pressed && obs_source_active(c->source))
+		vlcs_stop(c);
+}
+
+static void vlcs_playlist_next_hotkey(void *data, obs_hotkey_id id,
+		obs_hotkey_t *hotkey, bool pressed)
+{
+	UNUSED_PARAMETER(id);
+	UNUSED_PARAMETER(hotkey);
+
+	struct vlc_source *c = data;
+
+	if (pressed && obs_source_active(c->source))
+		vlcs_playlist_next(c);
+}
+
+static void vlcs_playlist_prev_hotkey(void *data, obs_hotkey_id id,
+		obs_hotkey_t *hotkey, bool pressed)
+{
+	UNUSED_PARAMETER(id);
+	UNUSED_PARAMETER(hotkey);
+
+	struct vlc_source *c = data;
+
+	if (pressed && obs_source_active(c->source))
+		vlcs_playlist_prev(c);
+}
+
 static void *vlcs_create(obs_data_t *settings, obs_source_t *source)
 {
 	struct vlc_source *c = bzalloc(sizeof(*c));
 	c->source = source;
 
+	c->play_pause_hotkey = obs_hotkey_register_source(source,
+			"VLCSource.PlayPause",
+			obs_module_text("PlayPause"),
+			vlcs_play_pause_hotkey, c);
+
+	c->restart_hotkey = obs_hotkey_register_source(source,
+			"VLCSource.Restart",
+			obs_module_text("Restart"),
+			vlcs_restart_hotkey, c);
+
+	c->stop_hotkey = obs_hotkey_register_source(source,
+			"VLCSource.Stop",
+			obs_module_text("Stop"),
+			vlcs_stop_hotkey, c);
+
+	c->playlist_next_hotkey = obs_hotkey_register_source(source,
+			"VLCSource.PlaylistNext",
+			obs_module_text("PlaylistNext"),
+			vlcs_playlist_next_hotkey, c);
+
+	c->playlist_prev_hotkey = obs_hotkey_register_source(source,
+			"VLCSource.PlaylistPrev",
+			obs_module_text("PlaylistPrev"),
+			vlcs_playlist_prev_hotkey, c);
+
 	pthread_mutex_init_value(&c->mutex);
 	if (pthread_mutex_init(&c->mutex, NULL) != 0)
 		goto error;