1 /* GStreamer Editing Services
2 * Copyright (C) 2009 Edward Hervey <edward.hervey@collabora.co.uk>
3 * 2009 Nokia Corporation
4 * 2012 Thibault Saunier <tsaunier@gnome.org>
6 * Author: Sebastian Dröge <sebastian.droege@collabora.co.uk>
8 * Author: Thibault Saunier <tsaunier@igalia.com>
10 * This library is free software; you can redistribute it and/or
11 * modify it under the terms of the GNU Library General Public
12 * License as published by the Free Software Foundation; either
13 * version 2 of the License, or (at your option) any later version.
15 * This library is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 * Library General Public License for more details.
20 * You should have received a copy of the GNU Library General Public
21 * License along with this library; if not, write to the
22 * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
23 * Boston, MA 02110-1301, USA.
29 * @short_description: Multimedia timeline
31 * #GESTimeline is the central object for any multimedia timeline.
33 * Contains a list of #GESLayer which users should use to arrange the
34 * various clips through time.
36 * The output type is determined by the #GESTrack that are set on
39 * To save/load a timeline, you can use the ges_timeline_load_from_uri() and
40 * ges_timeline_save_to_uri() methods to use the default format. If you wish
42 * Note that any change you make in the timeline will not actually be taken
43 * into account until you call the #ges_timeline_commit method.
49 #include "ges-internal.h"
50 #include "ges-project.h"
51 #include "ges-container.h"
52 #include "ges-timeline.h"
53 #include "ges-timeline-tree.h"
54 #include "ges-track.h"
55 #include "ges-layer.h"
56 #include "ges-auto-transition.h"
60 static GPtrArray *select_tracks_for_object_default (GESTimeline * timeline,
61 GESClip * clip, GESTrackElement * tr_obj, gpointer user_data);
62 static void ges_extractable_interface_init (GESExtractableInterface * iface);
63 static void ges_meta_container_interface_init
64 (GESMetaContainerInterface * iface);
66 GST_DEBUG_CATEGORY_STATIC (ges_timeline_debug);
67 #undef GST_CAT_DEFAULT
68 #define GST_CAT_DEFAULT ges_timeline_debug
70 /* lock to protect dynamic callbacks, like pad-added */
71 #define DYN_LOCK(timeline) (&GES_TIMELINE (timeline)->priv->dyn_mutex)
72 #define LOCK_DYN(timeline) G_STMT_START { \
73 GST_LOG_OBJECT (timeline, "Getting dynamic lock from %p", \
75 g_rec_mutex_lock (DYN_LOCK (timeline)); \
76 GST_LOG_OBJECT (timeline, "Got Dynamic lock from %p", \
80 #define UNLOCK_DYN(timeline) G_STMT_START { \
81 GST_LOG_OBJECT (timeline, "Unlocking dynamic lock from %p", \
83 g_rec_mutex_unlock (DYN_LOCK (timeline)); \
84 GST_LOG_OBJECT (timeline, "Unlocked Dynamic lock from %p", \
88 #define CHECK_THREAD(timeline) g_assert(timeline->priv->valid_thread == g_thread_self())
90 struct _GESTimelinePrivate
94 /* The duration of the timeline */
97 /* The auto-transition of the timeline */
98 gboolean auto_transition;
100 /* Timeline edition modes and snapping management */
101 guint64 snapping_distance;
106 /* Avoid sorting layers when we are actually resyncing them ourself */
107 gboolean resyncing_layers;
108 GList *auto_transitions;
110 /* Last snapping properties */
111 GstClockTime last_snap_ts;
112 GESTrackElement *last_snaped1;
113 GESTrackElement *last_snaped2;
115 /* This variable is set to %TRUE when it makes sense to update the transitions,
116 * and %FALSE otherwize */
117 gboolean needs_transitions_update;
119 /* While we are creating and adding the TrackElements for a clip, we need to
120 * ignore the child-added signal */
121 GESClip *ignore_track_element_added;
124 guint stream_start_group_id;
126 GHashTable *all_elements;
128 /* With GST_OBJECT_LOCK */
129 guint expected_async_done;
130 /* With GST_OBJECT_LOCK */
131 guint expected_commited;
133 /* For ges_timeline_commit_sync */
134 GMutex commited_lock;
137 GThread *valid_thread;
140 /* private structure to contain our track-related information */
144 GESTimeline *timeline;
146 GstPad *pad; /* Pad from the track */
156 PROP_AUTO_TRANSITION,
157 PROP_SNAPPING_DISTANCE,
162 static GParamSpec *properties[PROP_LAST];
174 SELECT_TRACKS_FOR_OBJECT,
179 G_DEFINE_TYPE_WITH_CODE (GESTimeline, ges_timeline, GST_TYPE_BIN,
180 G_ADD_PRIVATE (GESTimeline)
181 G_IMPLEMENT_INTERFACE (GES_TYPE_EXTRACTABLE, ges_extractable_interface_init)
182 G_IMPLEMENT_INTERFACE (GES_TYPE_META_CONTAINER,
183 ges_meta_container_interface_init));
185 static GstBinClass *parent_class;
187 static guint ges_timeline_signals[LAST_SIGNAL] = { 0 };
189 static gint custom_find_track (TrackPrivate * tr_priv, GESTrack * track);
191 static guint nb_assets = 0;
193 /* GESExtractable implementation */
195 extractable_check_id (GType type, const gchar * id)
200 res = g_strdup_printf ("%s-%i", "project", nb_assets);
210 extractable_get_id (GESExtractable * self)
214 if (!(asset = ges_extractable_get_asset (self)))
217 return g_strdup (ges_asset_get_id (asset));
221 ges_extractable_interface_init (GESExtractableInterface * iface)
223 iface->asset_type = GES_TYPE_PROJECT;
224 iface->check_id = (GESExtractableCheckId) extractable_check_id;
225 iface->get_id = extractable_get_id;
229 ges_meta_container_interface_init (GESMetaContainerInterface * iface)
233 /* GObject Standard vmethods*/
235 ges_timeline_get_property (GObject * object, guint property_id,
236 GValue * value, GParamSpec * pspec)
238 GESTimeline *timeline = GES_TIMELINE (object);
240 switch (property_id) {
242 g_value_set_uint64 (value, timeline->priv->duration);
244 case PROP_AUTO_TRANSITION:
245 g_value_set_boolean (value, timeline->priv->auto_transition);
247 case PROP_SNAPPING_DISTANCE:
248 g_value_set_uint64 (value, timeline->priv->snapping_distance);
251 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
256 ges_timeline_set_property (GObject * object, guint property_id,
257 const GValue * value, GParamSpec * pspec)
259 GESTimeline *timeline = GES_TIMELINE (object);
261 switch (property_id) {
262 case PROP_AUTO_TRANSITION:
263 ges_timeline_set_auto_transition (timeline, g_value_get_boolean (value));
265 case PROP_SNAPPING_DISTANCE:
266 timeline->priv->snapping_distance = g_value_get_uint64 (value);
269 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
274 ges_timeline_dispose (GObject * object)
276 GESTimeline *tl = GES_TIMELINE (object);
277 GESTimelinePrivate *priv = tl->priv;
281 GESLayer *layer = (GESLayer *) tl->layers->data;
282 ges_timeline_remove_layer (GES_TIMELINE (object), layer);
285 /* FIXME: it should be possible to remove tracks before removing
286 * layers, but at the moment this creates a problem because the track
287 * objects aren't notified that their nleobjects have been destroyed.
291 ges_timeline_remove_track (GES_TIMELINE (object), tl->tracks->data);
293 groups = g_list_copy (priv->groups);
294 for (tmp = groups; tmp; tmp = tmp->next) {
295 GList *elems = ges_container_ungroup (tmp->data, FALSE);
297 g_list_free_full (elems, gst_object_unref);
299 g_list_free (priv->groups);
300 g_list_free (groups);
302 g_list_free_full (priv->auto_transitions, gst_object_unref);
304 g_hash_table_unref (priv->all_elements);
306 G_OBJECT_CLASS (ges_timeline_parent_class)->dispose (object);
310 ges_timeline_finalize (GObject * object)
312 GESTimeline *tl = GES_TIMELINE (object);
314 g_rec_mutex_clear (&tl->priv->dyn_mutex);
315 g_node_destroy (tl->priv->tree);
317 G_OBJECT_CLASS (ges_timeline_parent_class)->finalize (object);
323 ges_timeline_handle_message (GstBin * bin, GstMessage * message)
325 GESTimeline *timeline = GES_TIMELINE (bin);
327 if (GST_MESSAGE_TYPE (message) == GST_MESSAGE_ELEMENT) {
328 GstMessage *amessage = NULL;
329 const GstStructure *mstructure = gst_message_get_structure (message);
331 if (gst_structure_has_name (mstructure, "NleCompositionStartUpdate")) {
332 if (g_strcmp0 (gst_structure_get_string (mstructure, "reason"), "Seek")) {
333 GST_INFO_OBJECT (timeline,
334 "A composition is starting an update because of %s"
335 " not considering async", gst_structure_get_string (mstructure,
341 GST_OBJECT_LOCK (timeline);
342 if (timeline->priv->expected_async_done == 0) {
343 amessage = gst_message_new_async_start (GST_OBJECT_CAST (bin));
344 timeline->priv->expected_async_done = g_list_length (timeline->tracks);
345 GST_INFO_OBJECT (timeline, "Posting ASYNC_START %s",
346 gst_structure_get_string (mstructure, "reason"));
348 GST_OBJECT_UNLOCK (timeline);
350 } else if (gst_structure_has_name (mstructure, "NleCompositionUpdateDone")) {
351 if (g_strcmp0 (gst_structure_get_string (mstructure, "reason"), "Seek")) {
352 GST_INFO_OBJECT (timeline,
353 "A composition is done updating because of %s"
354 " not considering async", gst_structure_get_string (mstructure,
360 GST_OBJECT_LOCK (timeline);
361 timeline->priv->expected_async_done -= 1;
362 if (timeline->priv->expected_async_done == 0) {
363 amessage = gst_message_new_async_done (GST_OBJECT_CAST (bin),
364 GST_CLOCK_TIME_NONE);
365 GST_INFO_OBJECT (timeline, "Posting ASYNC_DONE %s",
366 gst_structure_get_string (mstructure, "reason"));
368 GST_OBJECT_UNLOCK (timeline);
372 gst_element_post_message (GST_ELEMENT_CAST (bin), amessage);
376 gst_element_post_message (GST_ELEMENT_CAST (bin), message);
379 /* we collect the first result */
381 _gst_array_accumulator (GSignalInvocationHint * ihint,
382 GValue * return_accu, const GValue * handler_return, gpointer dummy)
386 array = g_value_get_boxed (handler_return);
387 if (!(ihint->run_type & G_SIGNAL_RUN_CLEANUP))
388 g_value_set_boxed (return_accu, array);
394 ges_timeline_class_init (GESTimelineClass * klass)
396 GObjectClass *object_class = G_OBJECT_CLASS (klass);
397 GstBinClass *bin_class = GST_BIN_CLASS (klass);
399 GST_DEBUG_CATEGORY_INIT (ges_timeline_debug, "gestimeline",
400 GST_DEBUG_FG_YELLOW, "ges timeline");
401 timeline_tree_init_debug ();
403 parent_class = g_type_class_peek_parent (klass);
405 object_class->get_property = ges_timeline_get_property;
406 object_class->set_property = ges_timeline_set_property;
407 object_class->dispose = ges_timeline_dispose;
408 object_class->finalize = ges_timeline_finalize;
410 bin_class->handle_message = GST_DEBUG_FUNCPTR (ges_timeline_handle_message);
413 * GESTimeline:duration:
415 * Current duration (in nanoseconds) of the #GESTimeline
417 properties[PROP_DURATION] =
418 g_param_spec_uint64 ("duration", "Duration",
419 "The duration of the timeline", 0, G_MAXUINT64,
420 GST_CLOCK_TIME_NONE, G_PARAM_READABLE);
421 g_object_class_install_property (object_class, PROP_DURATION,
422 properties[PROP_DURATION]);
425 * GESTimeline:auto-transition:
427 * Sets whether transitions are added automagically when clips overlap.
429 g_object_class_install_property (object_class, PROP_AUTO_TRANSITION,
430 g_param_spec_boolean ("auto-transition", "Auto-Transition",
431 "whether the transitions are added", FALSE, G_PARAM_READWRITE));
434 * GESTimeline:snapping-distance:
436 * Distance (in nanoseconds) from which a moving object will snap
437 * with it neighboors. 0 means no snapping.
439 properties[PROP_SNAPPING_DISTANCE] =
440 g_param_spec_uint64 ("snapping-distance", "Snapping distance",
441 "Distance from which moving an object will snap with neighboors", 0,
442 G_MAXUINT64, 0, G_PARAM_READWRITE);
443 g_object_class_install_property (object_class, PROP_SNAPPING_DISTANCE,
444 properties[PROP_SNAPPING_DISTANCE]);
447 * GESTimeline::track-added:
448 * @timeline: the #GESTimeline
449 * @track: the #GESTrack that was added to the timeline
451 * Will be emitted after the track was added to the timeline.
453 ges_timeline_signals[TRACK_ADDED] =
454 g_signal_new ("track-added", G_TYPE_FROM_CLASS (klass),
455 G_SIGNAL_RUN_FIRST, G_STRUCT_OFFSET (GESTimelineClass, track_added), NULL,
456 NULL, g_cclosure_marshal_generic, G_TYPE_NONE, 1, GES_TYPE_TRACK);
459 * GESTimeline::track-removed:
460 * @timeline: the #GESTimeline
461 * @track: the #GESTrack that was removed from the timeline
463 * Will be emitted after the track was removed from the timeline.
465 ges_timeline_signals[TRACK_REMOVED] =
466 g_signal_new ("track-removed", G_TYPE_FROM_CLASS (klass),
467 G_SIGNAL_RUN_FIRST, G_STRUCT_OFFSET (GESTimelineClass, track_removed),
468 NULL, NULL, g_cclosure_marshal_generic, G_TYPE_NONE, 1, GES_TYPE_TRACK);
471 * GESTimeline::layer-added:
472 * @timeline: the #GESTimeline
473 * @layer: the #GESLayer that was added to the timeline
475 * Will be emitted after a new layer is added to the timeline.
477 ges_timeline_signals[LAYER_ADDED] =
478 g_signal_new ("layer-added", G_TYPE_FROM_CLASS (klass),
479 G_SIGNAL_RUN_FIRST, G_STRUCT_OFFSET (GESTimelineClass, layer_added), NULL,
480 NULL, g_cclosure_marshal_generic, G_TYPE_NONE, 1, GES_TYPE_LAYER);
483 * GESTimeline::layer-removed:
484 * @timeline: the #GESTimeline
485 * @layer: the #GESLayer that was removed from the timeline
487 * Will be emitted after the layer was removed from the timeline.
489 ges_timeline_signals[LAYER_REMOVED] =
490 g_signal_new ("layer-removed", G_TYPE_FROM_CLASS (klass),
491 G_SIGNAL_RUN_FIRST, G_STRUCT_OFFSET (GESTimelineClass, layer_removed),
492 NULL, NULL, g_cclosure_marshal_generic, G_TYPE_NONE, 1, GES_TYPE_LAYER);
495 * GESTimeline::group-added
496 * @timeline: the #GESTimeline
497 * @group: the #GESGroup
499 * Will be emitted after a new group is added to to the timeline.
501 ges_timeline_signals[GROUP_ADDED] =
502 g_signal_new ("group-added", G_TYPE_FROM_CLASS (klass),
503 G_SIGNAL_RUN_FIRST, G_STRUCT_OFFSET (GESTimelineClass, group_added), NULL,
504 NULL, g_cclosure_marshal_generic, G_TYPE_NONE, 1, GES_TYPE_GROUP);
507 * GESTimeline::group-removed
508 * @timeline: the #GESTimeline
509 * @group: the #GESGroup
510 * @children: (element-type GES.Container) (transfer container): a list of #GESContainer
512 * Will be emitted after a group has been removed from the timeline.
514 ges_timeline_signals[GROUP_REMOVED] =
515 g_signal_new ("group-removed", G_TYPE_FROM_CLASS (klass),
516 G_SIGNAL_RUN_FIRST, G_STRUCT_OFFSET (GESTimelineClass, group_removed),
517 NULL, NULL, g_cclosure_marshal_generic, G_TYPE_NONE, 2, GES_TYPE_GROUP,
521 * GESTimeline::snapping-started:
522 * @timeline: the #GESTimeline
523 * @obj1: the first #GESTrackElement that was snapping.
524 * @obj2: the second #GESTrackElement that was snapping.
525 * @position: the position where the two objects finally snapping.
527 * Will be emitted when the 2 #GESTrackElement first snapped
529 ges_timeline_signals[SNAPING_STARTED] =
530 g_signal_new ("snapping-started", G_TYPE_FROM_CLASS (klass),
531 G_SIGNAL_RUN_LAST, 0, NULL, NULL, NULL,
532 G_TYPE_NONE, 3, GES_TYPE_TRACK_ELEMENT, GES_TYPE_TRACK_ELEMENT,
536 * GESTimeline::snapping-ended:
537 * @timeline: the #GESTimeline
538 * @obj1: the first #GESTrackElement that was snapping.
539 * @obj2: the second #GESTrackElement that was snapping.
540 * @position: the position where the two objects finally snapping.
542 * Will be emitted when the 2 #GESTrackElement ended to snap
544 ges_timeline_signals[SNAPING_ENDED] =
545 g_signal_new ("snapping-ended", G_TYPE_FROM_CLASS (klass),
546 G_SIGNAL_RUN_LAST, 0, NULL, NULL, NULL,
547 G_TYPE_NONE, 3, GES_TYPE_TRACK_ELEMENT, GES_TYPE_TRACK_ELEMENT,
551 * GESTimeline::select-tracks-for-object:
552 * @timeline: the #GESTimeline
553 * @clip: The #GESClip on which @track_element will land
554 * @track_element: The #GESTrackElement for which to choose the tracks it should land into
556 * Returns: (transfer full) (element-type GESTrack): a #GPtrArray of #GESTrack-s where that object should be added
558 ges_timeline_signals[SELECT_TRACKS_FOR_OBJECT] =
559 g_signal_new ("select-tracks-for-object", G_TYPE_FROM_CLASS (klass),
560 G_SIGNAL_RUN_LAST, 0, _gst_array_accumulator, NULL, NULL,
561 G_TYPE_PTR_ARRAY, 2, GES_TYPE_CLIP, GES_TYPE_TRACK_ELEMENT);
564 * GESTimeline::commited:
565 * @timeline: the #GESTimeline
567 * This signal will be emitted once the changes initiated by #ges_timeline_commit
568 * have been executed in the backend. Use #ges_timeline_commit_sync if you
569 * don't need to do anything in the meantime.
571 ges_timeline_signals[COMMITED] =
572 g_signal_new ("commited", G_TYPE_FROM_CLASS (klass),
573 G_SIGNAL_RUN_LAST, 0, NULL, NULL, NULL, G_TYPE_NONE, 0);
577 ges_timeline_init (GESTimeline * self)
579 GESTimelinePrivate *priv = self->priv;
581 self->priv = ges_timeline_get_instance_private (self);
582 self->priv->tree = g_node_new (self);
587 self->priv->duration = 0;
588 self->priv->auto_transition = FALSE;
589 priv->snapping_distance = 0;
590 priv->expected_async_done = 0;
591 priv->expected_commited = 0;
593 self->priv->last_snap_ts = GST_CLOCK_TIME_NONE;
595 priv->priv_tracks = NULL;
596 priv->needs_transitions_update = TRUE;
599 g_hash_table_new_full (g_str_hash, g_str_equal, g_free, gst_object_unref);
601 priv->stream_start_group_id = -1;
603 g_signal_connect_after (self, "select-tracks-for-object",
604 G_CALLBACK (select_tracks_for_object_default), NULL);
606 g_rec_mutex_init (&priv->dyn_mutex);
607 g_mutex_init (&priv->commited_lock);
608 priv->valid_thread = g_thread_self ();
611 /* Private methods */
613 static inline GESContainer *
614 get_toplevel_container (gpointer element)
616 GESTimelineElement *ret =
617 ges_timeline_element_get_toplevel_parent ((GESTimelineElement
620 /* We own a ref to the elements ourself */
621 gst_object_unref (ret);
622 return (GESContainer *) ret;
627 sort_layers (gpointer a, gpointer b)
629 GESLayer *layer_a, *layer_b;
630 guint prio_a, prio_b;
632 layer_a = GES_LAYER (a);
633 layer_b = GES_LAYER (b);
635 prio_a = ges_layer_get_priority (layer_a);
636 prio_b = ges_layer_get_priority (layer_b);
638 if ((gint) prio_a > (guint) prio_b)
640 if ((guint) prio_a < (guint) prio_b)
647 _resync_layers (GESTimeline * timeline)
652 timeline->priv->resyncing_layers = TRUE;
653 for (tmp = timeline->layers; tmp; tmp = tmp->next) {
654 layer_set_priority (tmp->data, i, TRUE);
657 timeline->priv->resyncing_layers = FALSE;
661 timeline_update_duration (GESTimeline * timeline)
663 GstClockTime duration = timeline_tree_get_duration (timeline->priv->tree);
665 if (timeline->priv->duration != duration) {
666 GST_DEBUG ("track duration : %" GST_TIME_FORMAT " current : %"
667 GST_TIME_FORMAT, GST_TIME_ARGS (duration),
668 GST_TIME_ARGS (timeline->priv->duration));
670 timeline->priv->duration = duration;
672 g_object_notify_by_pspec (G_OBJECT (timeline), properties[PROP_DURATION]);
677 custom_find_track (TrackPrivate * tr_priv, GESTrack * track)
679 if (tr_priv->track == track)
685 _destroy_auto_transition_cb (GESAutoTransition * auto_transition,
686 GESTimeline * timeline)
688 GESTimelinePrivate *priv = timeline->priv;
689 GESClip *transition = auto_transition->transition_clip;
690 GESLayer *layer = ges_clip_get_layer (transition);
692 ges_layer_remove_clip (layer, transition);
693 g_signal_handlers_disconnect_by_func (auto_transition,
694 _destroy_auto_transition_cb, timeline);
696 priv->auto_transitions =
697 g_list_remove (priv->auto_transitions, auto_transition);
698 gst_object_unref (auto_transition);
702 ges_timeline_create_transition (GESTimeline * timeline,
703 GESTrackElement * previous, GESTrackElement * next, GESClip * transition,
704 GESLayer * layer, guint64 start, guint64 duration)
707 GESAutoTransition *auto_transition;
709 if (transition == NULL) {
710 /* TODO make it possible to specify a Transition asset in the API */
711 asset = ges_asset_request (GES_TYPE_TRANSITION_CLIP, "crossfade", NULL);
713 ges_layer_add_asset (layer, asset, start, 0, duration,
714 ges_track_element_get_track_type (next));
716 GST_DEBUG_OBJECT (timeline,
717 "Reusing already existing transition: %" GST_PTR_FORMAT, transition);
720 /* We know there is only 1 TrackElement */
722 ges_auto_transition_new (GES_CONTAINER_CHILDREN (transition)->data,
725 g_signal_connect (auto_transition, "destroy-me",
726 G_CALLBACK (_destroy_auto_transition_cb), timeline);
728 timeline->priv->auto_transitions =
729 g_list_prepend (timeline->priv->auto_transitions, auto_transition);
731 return auto_transition;
735 ges_timeline_find_auto_transition (GESTimeline * timeline,
736 GESTrackElement * prev, GESTrackElement * next,
737 GstClockTime transition_duration)
741 for (tmp = timeline->priv->auto_transitions; tmp; tmp = tmp->next) {
742 GESAutoTransition *auto_trans = (GESAutoTransition *) tmp->data;
744 /* We already have a transition linked to one of the elements we want to
745 * find a transition for */
746 if (auto_trans->previous_source == prev || auto_trans->next_source == next) {
747 if (auto_trans->previous_source != prev
748 || auto_trans->next_source != next) {
749 GST_ERROR_OBJECT (timeline, "Failed creating auto transition, "
750 " trying to have 3 clips overlapping, rolling back");
760 static GESAutoTransition *
761 _create_auto_transition_from_transitions (GESTimeline * timeline,
762 GESTrackElement * prev, GESTrackElement * next,
763 GstClockTime transition_duration)
765 GList *tmp, *elements;
767 guint32 layer_prio = GES_TIMELINE_ELEMENT_LAYER_PRIORITY (prev);
769 GESAutoTransition *auto_transition =
770 ges_timeline_find_auto_transition (timeline, prev, next,
771 transition_duration);
774 return auto_transition;
776 layer = ges_timeline_get_layer (timeline, layer_prio);
777 track = ges_track_element_get_track (prev);
778 elements = ges_track_get_elements (track);
779 for (tmp = elements; tmp; tmp = tmp->next) {
780 GESTrackElement *maybe_transition = tmp->data;
782 if (ges_timeline_element_get_layer_priority (tmp->data) != layer_prio)
785 if (_START (maybe_transition) > _START (next))
787 else if (_START (maybe_transition) != _START (next) ||
788 _DURATION (maybe_transition) != transition_duration)
790 else if (GES_IS_TRANSITION (maybe_transition)) {
791 /* Use that transition */
792 /* TODO We should make sure that the transition contains only
793 * TrackElement-s in @track and if it is not the case properly unlink the
794 * object to use it */
795 auto_transition = ges_timeline_create_transition (timeline, prev, next,
796 GES_CLIP (GES_TIMELINE_ELEMENT_PARENT (maybe_transition)), layer,
797 _START (next), transition_duration);
802 gst_object_unref (layer);
803 g_list_free_full (elements, gst_object_unref);
805 return auto_transition;
809 ges_timeline_emit_snapping (GESTimeline * timeline, GESTimelineElement * elem1,
810 GESTimelineElement * elem2, GstClockTime snap_time)
812 GESTimelinePrivate *priv = timeline->priv;
813 GstClockTime last_snap_ts = timeline->priv->last_snap_ts;
815 if (!GST_CLOCK_TIME_IS_VALID (snap_time)) {
816 if (priv->last_snaped1 != NULL && priv->last_snaped2 != NULL) {
817 g_signal_emit (timeline, ges_timeline_signals[SNAPING_ENDED], 0,
818 priv->last_snaped1, priv->last_snaped2, last_snap_ts);
819 priv->last_snaped1 = NULL;
820 priv->last_snaped2 = NULL;
821 priv->last_snap_ts = GST_CLOCK_TIME_NONE;
827 g_assert (elem1 != elem2);
828 if (GES_IS_CLIP (elem1)) {
829 g_assert (GES_CONTAINER_CHILDREN (elem1));
830 elem1 = GES_CONTAINER_CHILDREN (elem1)->data;
833 if (GES_IS_CLIP (elem2)) {
834 g_assert (GES_CONTAINER_CHILDREN (elem2));
835 elem2 = GES_CONTAINER_CHILDREN (elem2)->data;
838 if (last_snap_ts != snap_time) {
839 g_signal_emit (timeline, ges_timeline_signals[SNAPING_ENDED], 0,
840 priv->last_snaped1, priv->last_snaped2, (last_snap_ts));
842 /* We want the snap start signal to be emited anyway */
843 timeline->priv->last_snap_ts = GST_CLOCK_TIME_NONE;
846 if (!GST_CLOCK_TIME_IS_VALID (timeline->priv->last_snap_ts)) {
847 priv->last_snaped1 = (GESTrackElement *) elem1;
848 priv->last_snaped2 = (GESTrackElement *) elem2;
849 timeline->priv->last_snap_ts = snap_time;
851 g_signal_emit (timeline, ges_timeline_signals[SNAPING_STARTED], 0,
852 elem1, elem2, snap_time);
858 ges_timeline_trim_object_simple (GESTimeline * timeline,
859 GESTimelineElement * element, guint32 new_layer_priority,
860 GList * layers, GESEdge edge, guint64 position, gboolean snapping)
863 return timeline_trim_object (timeline, element, new_layer_priority, layers,
868 timeline_ripple_object (GESTimeline * timeline, GESTimelineElement * obj,
869 gint new_layer_priority, GList * layers, GESEdge edge, guint64 position)
872 guint64 new_duration;
873 GstClockTimeDiff diff;
877 GST_DEBUG ("Simply rippling");
878 diff = GST_CLOCK_DIFF (position, _START (obj));
880 timeline->priv->needs_transitions_update = FALSE;
881 res = timeline_tree_ripple (timeline->priv->tree,
882 (gint64) GES_TIMELINE_ELEMENT_LAYER_PRIORITY (obj) -
883 (gint64) new_layer_priority, diff, obj,
884 GES_EDGE_NONE, timeline->priv->snapping_distance);
885 timeline->priv->needs_transitions_update = TRUE;
889 GST_DEBUG ("Rippling end");
891 timeline->priv->needs_transitions_update = FALSE;
893 CLAMP (position - obj->start, 0, obj->maxduration - obj->inpoint);
895 timeline_tree_ripple (timeline->priv->tree,
896 (gint64) GES_TIMELINE_ELEMENT_LAYER_PRIORITY (obj) -
897 (gint64) new_layer_priority,
898 _DURATION (obj) - new_duration, obj,
899 GES_EDGE_END, timeline->priv->snapping_distance);
900 timeline->priv->needs_transitions_update = TRUE;
902 GST_DEBUG ("Done Rippling end");
905 GST_INFO ("Ripple start doesn't make sense, trimming instead");
906 if (!timeline_trim_object (timeline, obj, -1, layers, edge, position))
910 GST_DEBUG ("Can not ripple edge: %i", edge);
923 timeline_slide_object (GESTimeline * timeline, GESTrackElement * obj,
924 GList * layers, GESEdge edge, guint64 position)
927 /* FIXME implement me! */
928 GST_FIXME_OBJECT (timeline, "Slide mode editing not implemented yet");
934 _trim_transition (GESTimeline * timeline, GESTimelineElement * element,
935 GESEdge edge, GstClockTime position)
938 GESLayer *layer = ges_timeline_get_layer (timeline,
939 GES_TIMELINE_ELEMENT_LAYER_PRIORITY (element));
941 if (!ges_layer_get_auto_transition (layer))
944 gst_object_unref (layer);
945 for (tmp = timeline->priv->auto_transitions; tmp; tmp = tmp->next) {
946 GESAutoTransition *auto_transition = tmp->data;
948 if (GES_TIMELINE_ELEMENT (auto_transition->transition) == element ||
949 GES_TIMELINE_ELEMENT (auto_transition->transition_clip) == element) {
950 /* Trimming an auto transition means trimming its neighboors */
951 if (!auto_transition->positioning) {
952 if (edge == GES_EDGE_END) {
953 ges_container_edit (GES_CONTAINER (auto_transition->previous_clip),
954 NULL, -1, GES_EDIT_MODE_TRIM, GES_EDGE_END, position);
956 ges_container_edit (GES_CONTAINER (auto_transition->next_clip),
957 NULL, -1, GES_EDIT_MODE_TRIM, GES_EDGE_START, position);
970 gst_object_unref (layer);
976 timeline_trim_object (GESTimeline * timeline, GESTimelineElement * object,
977 guint32 new_layer_priority, GList * layers, GESEdge edge, guint64 position)
979 if ((GES_IS_TRANSITION (object) || GES_IS_TRANSITION_CLIP (object)) &&
980 !ELEMENT_FLAG_IS_SET (object, GES_TIMELINE_ELEMENT_SET_SIMPLE)) {
981 return _trim_transition (timeline, object, edge, position);
984 return timeline_tree_trim (timeline->priv->tree,
985 GES_TIMELINE_ELEMENT (object), new_layer_priority > 0 ? (gint64)
986 ges_timeline_element_get_layer_priority (GES_TIMELINE_ELEMENT (object)) -
987 new_layer_priority : 0, edge == GES_EDGE_END ? GST_CLOCK_DIFF (position,
988 _START (object) + _DURATION (object)) : GST_CLOCK_DIFF (position,
989 GES_TIMELINE_ELEMENT_START (object)), edge,
990 timeline->priv->snapping_distance);
994 timeline_roll_object (GESTimeline * timeline, GESTimelineElement * element,
995 GList * layers, GESEdge edge, guint64 position)
997 return timeline_tree_roll (timeline->priv->tree,
999 (edge == GES_EDGE_END) ?
1000 GST_CLOCK_DIFF (position, _END (element)) :
1001 GST_CLOCK_DIFF (position, _START (element)),
1002 edge, timeline->priv->snapping_distance);
1006 timeline_move_object (GESTimeline * timeline, GESTimelineElement * object,
1007 guint32 new_layer_priority, GList * layers, GESEdge edge, guint64 position)
1009 gboolean ret = FALSE;
1010 GstClockTimeDiff offset = edge == GES_EDGE_END ?
1011 GST_CLOCK_DIFF (position, _START (object) + _DURATION (object)) :
1012 GST_CLOCK_DIFF (position, GES_TIMELINE_ELEMENT_START (object));
1014 ret = timeline_tree_move (timeline->priv->tree,
1015 GES_TIMELINE_ELEMENT (object), new_layer_priority < 0 ? 0 : (gint64)
1016 ges_timeline_element_get_layer_priority (GES_TIMELINE_ELEMENT (object)) -
1017 new_layer_priority, offset, edge, timeline->priv->snapping_distance);
1023 ges_timeline_move_object_simple (GESTimeline * timeline,
1024 GESTimelineElement * element, GList * layers, GESEdge edge,
1027 return timeline_move_object (timeline, element,
1028 ges_timeline_element_get_layer_priority (element), NULL, edge, position);
1032 timeline_add_group (GESTimeline * timeline, GESGroup * group)
1034 GST_DEBUG_OBJECT (timeline, "Adding group %" GST_PTR_FORMAT, group);
1036 timeline->priv->groups = g_list_prepend (timeline->priv->groups,
1037 gst_object_ref_sink (group));
1039 ges_timeline_element_set_timeline (GES_TIMELINE_ELEMENT (group), timeline);
1043 timeline_update_transition (GESTimeline * timeline)
1045 GList *tmp, *auto_transs;
1047 auto_transs = g_list_copy (timeline->priv->auto_transitions);
1048 for (tmp = auto_transs; tmp; tmp = tmp->next)
1049 ges_auto_transition_update (tmp->data);
1050 g_list_free (auto_transs);
1054 * timeline_emit_group_added:
1055 * @timeline: a #GESTimeline
1056 * @group: group that was added
1058 * Emit group-added signal.
1061 timeline_emit_group_added (GESTimeline * timeline, GESGroup * group)
1063 g_signal_emit (timeline, ges_timeline_signals[GROUP_ADDED], 0, group);
1067 * timeline_emit_group_removed:
1068 * @timeline: a #GESTimeline
1069 * @group: group that was removed
1071 * Emit group-removed signal.
1074 timeline_emit_group_removed (GESTimeline * timeline, GESGroup * group,
1077 g_signal_emit (timeline, ges_timeline_signals[GROUP_REMOVED], 0, group,
1082 timeline_remove_group (GESTimeline * timeline, GESGroup * group)
1084 GST_DEBUG_OBJECT (timeline, "Removing group %" GST_PTR_FORMAT, group);
1086 timeline->priv->groups = g_list_remove (timeline->priv->groups, group);
1088 ges_timeline_element_set_timeline (GES_TIMELINE_ELEMENT (group), NULL);
1089 gst_object_unref (group);
1093 select_tracks_for_object_default (GESTimeline * timeline,
1094 GESClip * clip, GESTrackElement * tr_object, gpointer user_data)
1099 result = g_ptr_array_new ();
1101 for (tmp = timeline->tracks; tmp; tmp = tmp->next) {
1102 GESTrack *track = GES_TRACK (tmp->data);
1104 if ((track->type & ges_track_element_get_track_type (tr_object))) {
1105 gst_object_ref (track);
1106 g_ptr_array_add (result, track);
1114 add_object_to_tracks (GESTimeline * timeline, GESClip * clip, GESTrack * track)
1118 GESTrackType types, visited_type = GES_TRACK_TYPE_UNKNOWN;
1120 GST_DEBUG_OBJECT (timeline, "Creating %" GST_PTR_FORMAT
1121 " trackelements and adding them to our tracks", clip);
1123 types = ges_clip_get_supported_formats (clip);
1125 if ((types & track->type) == 0)
1127 types = track->type;
1130 for (i = 0, tmp = timeline->tracks; tmp; tmp = tmp->next, i++) {
1131 GESTrack *track = GES_TRACK (tmp->data);
1133 if (((track->type & types) == 0 || (track->type & visited_type)))
1136 list = ges_clip_create_track_elements (clip, track->type);
1142 layer_auto_transition_changed_cb (GESLayer * layer,
1143 GParamSpec * arg G_GNUC_UNUSED, GESTimeline * timeline)
1147 timeline_tree_create_transitions (timeline->priv->tree,
1148 _create_auto_transition_from_transitions);
1149 clips = ges_layer_get_clips (layer);
1150 for (tmp = clips; tmp; tmp = tmp->next) {
1151 if (GES_IS_TRANSITION_CLIP (tmp->data)) {
1152 GList *tmpautotrans;
1153 gboolean found = FALSE;
1155 for (tmpautotrans = timeline->priv->auto_transitions; tmpautotrans;
1156 tmpautotrans = tmpautotrans->next) {
1157 if (GES_AUTO_TRANSITION (tmpautotrans->data)->transition_clip ==
1165 GST_ERROR_OBJECT (timeline,
1166 "Transition %s could not be wrapped into an auto transition"
1167 " REMOVING it", GES_TIMELINE_ELEMENT_NAME (tmp->data));
1169 ges_layer_remove_clip (layer, tmp->data);
1173 g_list_free_full (clips, gst_object_unref);
1177 clip_track_element_added_cb (GESClip * clip,
1178 GESTrackElement * track_element, GESTimeline * timeline)
1183 GPtrArray *tracks = NULL;
1184 GESTrackElement *existing_src = NULL;
1186 if (timeline->priv->ignore_track_element_added == clip) {
1187 GST_DEBUG_OBJECT (timeline, "Ignoring element added (%" GST_PTR_FORMAT
1188 " in %" GST_PTR_FORMAT, track_element, clip);
1193 if (ges_track_element_get_track (track_element)) {
1194 GST_WARNING_OBJECT (track_element, "Already in a track");
1199 g_signal_emit (G_OBJECT (timeline),
1200 ges_timeline_signals[SELECT_TRACKS_FOR_OBJECT], 0, clip, track_element,
1203 if (!tracks || tracks->len == 0) {
1204 GST_WARNING_OBJECT (timeline, "Got no Track to add %p (type %s), removing"
1205 " from clip (stopping 'child-added' signal emission).",
1206 track_element, ges_track_type_name (ges_track_element_get_track_type
1210 g_ptr_array_unref (tracks);
1212 g_signal_stop_emission_by_name (clip, "child-added");
1213 ges_container_remove (GES_CONTAINER (clip),
1214 GES_TIMELINE_ELEMENT (track_element));
1219 /* We add the current element to the first track */
1220 track = g_ptr_array_index (tracks, 0);
1222 is_source = g_type_is_a (G_OBJECT_TYPE (track_element), GES_TYPE_SOURCE);
1224 existing_src = ges_clip_find_track_element (clip, track, GES_TYPE_SOURCE);
1226 if (existing_src == NULL) {
1227 if (!ges_track_add_element (track, track_element)) {
1228 GST_WARNING_OBJECT (clip, "Failed to add track element to track");
1229 ges_container_remove (GES_CONTAINER (clip),
1230 GES_TIMELINE_ELEMENT (track_element));
1231 g_ptr_array_unref (tracks);
1235 GST_INFO_OBJECT (clip, "Already had a Source Element in %" GST_PTR_FORMAT
1236 " of type %s, removing new one. (stopping 'child-added' emission)",
1237 track, G_OBJECT_TYPE_NAME (track_element));
1238 g_signal_stop_emission_by_name (clip, "child-added");
1239 ges_container_remove (GES_CONTAINER (clip),
1240 GES_TIMELINE_ELEMENT (track_element));
1242 gst_object_unref (track);
1243 g_clear_object (&existing_src);
1245 /* And create copies to add to other tracks */
1246 timeline->priv->ignore_track_element_added = clip;
1247 for (i = 1; i < tracks->len; i++) {
1249 GESTrackElement *track_element_copy;
1251 track = g_ptr_array_index (tracks, i);
1253 existing_src = ges_clip_find_track_element (clip, track, GES_TYPE_SOURCE);
1254 if (existing_src == NULL) {
1255 ges_container_remove (GES_CONTAINER (clip),
1256 GES_TIMELINE_ELEMENT (track_element));
1257 gst_object_unref (track);
1258 g_ptr_array_unref (tracks);
1261 GST_INFO_OBJECT (clip, "Already had a Source Element in %" GST_PTR_FORMAT
1262 " of type %s, removing new one. (stopping 'child-added' emission)",
1263 track, G_OBJECT_TYPE_NAME (track_element));
1264 g_signal_stop_emission_by_name (clip, "child-added");
1265 ges_container_remove (GES_CONTAINER (clip),
1266 GES_TIMELINE_ELEMENT (track_element));
1268 g_clear_object (&existing_src);
1270 track_element_copy =
1271 GES_TRACK_ELEMENT (ges_timeline_element_copy (GES_TIMELINE_ELEMENT
1272 (track_element), TRUE));
1274 GST_LOG_OBJECT (timeline, "Trying to add %p to track %p",
1275 track_element_copy, track);
1277 if (!ges_container_add (GES_CONTAINER (clip),
1278 GES_TIMELINE_ELEMENT (track_element_copy))) {
1279 GST_WARNING_OBJECT (clip, "Failed to add track element to clip");
1280 gst_object_unref (track_element_copy);
1281 g_ptr_array_unref (tracks);
1285 if (!ges_track_add_element (track, track_element_copy)) {
1286 GST_WARNING_OBJECT (clip, "Failed to add track element to track");
1287 ges_container_remove (GES_CONTAINER (clip),
1288 GES_TIMELINE_ELEMENT (track_element_copy));
1289 gst_object_unref (track_element_copy);
1290 g_ptr_array_unref (tracks);
1294 gst_object_unref (track);
1296 timeline->priv->ignore_track_element_added = NULL;
1297 g_ptr_array_unref (tracks);
1298 if (GES_IS_SOURCE (track_element))
1299 timeline_tree_create_transitions (timeline->priv->tree,
1300 ges_timeline_find_auto_transition);
1304 clip_track_element_removed_cb (GESClip * clip,
1305 GESTrackElement * track_element, GESTimeline * timeline)
1307 GESTrack *track = ges_track_element_get_track (track_element);
1310 ges_track_remove_element (track, track_element);
1314 layer_object_added_cb (GESLayer * layer, GESClip * clip, GESTimeline * timeline)
1316 GESProject *project;
1318 /* We make sure not to be connected twice */
1319 g_signal_handlers_disconnect_by_func (clip, clip_track_element_added_cb,
1321 g_signal_handlers_disconnect_by_func (clip, clip_track_element_removed_cb,
1324 /* And we connect to the object */
1325 g_signal_connect (clip, "child-added",
1326 G_CALLBACK (clip_track_element_added_cb), timeline);
1327 g_signal_connect (clip, "child-removed",
1328 G_CALLBACK (clip_track_element_removed_cb), timeline);
1330 if (ges_clip_is_moving_from_layer (clip)) {
1331 GST_DEBUG ("Clip %p moving from one layer to another, not creating "
1332 "TrackElement", clip);
1333 timeline_tree_create_transitions (timeline->priv->tree,
1334 ges_timeline_find_auto_transition);
1338 add_object_to_tracks (timeline, clip, NULL);
1340 GST_DEBUG ("Making sure that the asset is in our project");
1342 GES_PROJECT (ges_extractable_get_asset (GES_EXTRACTABLE (timeline)));
1343 ges_project_add_asset (project,
1344 ges_extractable_get_asset (GES_EXTRACTABLE (clip)));
1350 layer_priority_changed_cb (GESLayer * layer,
1351 GParamSpec * arg G_GNUC_UNUSED, GESTimeline * timeline)
1353 if (timeline->priv->resyncing_layers)
1356 timeline->layers = g_list_sort (timeline->layers, (GCompareFunc)
1361 layer_object_removed_cb (GESLayer * layer, GESClip * clip,
1362 GESTimeline * timeline)
1364 GList *trackelements, *tmp;
1366 if (ges_clip_is_moving_from_layer (clip)) {
1367 GST_DEBUG ("Clip %p is moving from a layer to another, not doing"
1368 " anything on it", clip);
1372 GST_DEBUG ("Clip %p removed from layer %p", clip, layer);
1374 /* Go over the clip's track element and figure out which one belongs to
1375 * the list of tracks we control */
1377 trackelements = ges_container_get_children (GES_CONTAINER (clip), FALSE);
1378 for (tmp = trackelements; tmp; tmp = tmp->next) {
1379 GESTrackElement *track_element = (GESTrackElement *) tmp->data;
1380 GESTrack *track = ges_track_element_get_track (track_element);
1385 GST_DEBUG_OBJECT (timeline, "Trying to remove TrackElement %p",
1388 /* FIXME Check if we should actually check that we control the
1389 * track in the new management of TrackElement context */
1390 LOCK_DYN (timeline);
1391 if (G_LIKELY (g_list_find_custom (timeline->priv->priv_tracks, track,
1392 (GCompareFunc) custom_find_track) || track == NULL)) {
1393 GST_DEBUG ("Belongs to one of the tracks we control");
1395 ges_track_remove_element (track, track_element);
1397 UNLOCK_DYN (timeline);
1399 g_signal_handlers_disconnect_by_func (clip, clip_track_element_added_cb,
1401 g_signal_handlers_disconnect_by_func (clip, clip_track_element_removed_cb,
1404 g_list_free_full (trackelements, gst_object_unref);
1410 trackelement_start_changed_cb (GESTrackElement * child,
1411 GParamSpec * arg G_GNUC_UNUSED, GESTimeline * timeline)
1413 timeline_update_duration (timeline);
1417 track_element_added_cb (GESTrack * track, GESTrackElement * track_element,
1418 GESTimeline * timeline)
1420 /* Auto transition should be updated before we receive the signal */
1421 g_signal_connect_after (GES_TRACK_ELEMENT (track_element), "notify::start",
1422 G_CALLBACK (trackelement_start_changed_cb), timeline);
1426 track_element_removed_cb (GESTrack * track,
1427 GESTrackElement * track_element, GESTimeline * timeline)
1429 /* Disconnect all signal handlers */
1430 g_signal_handlers_disconnect_by_func (track_element,
1431 trackelement_start_changed_cb, timeline);
1434 static GstPadProbeReturn
1435 _pad_probe_cb (GstPad * mixer_pad, GstPadProbeInfo * info,
1436 GESTimeline * timeline)
1438 GstEvent *event = GST_PAD_PROBE_INFO_EVENT (info);
1439 if (GST_EVENT_TYPE (event) == GST_EVENT_STREAM_START) {
1440 LOCK_DYN (timeline);
1441 if (timeline->priv->stream_start_group_id == -1) {
1442 if (!gst_event_parse_group_id (event,
1443 &timeline->priv->stream_start_group_id))
1444 timeline->priv->stream_start_group_id = gst_util_group_id_next ();
1447 info->data = gst_event_make_writable (event);
1448 gst_event_set_group_id (GST_PAD_PROBE_INFO_EVENT (info),
1449 timeline->priv->stream_start_group_id);
1450 UNLOCK_DYN (timeline);
1452 return GST_PAD_PROBE_REMOVE;
1455 return GST_PAD_PROBE_OK;
1459 _ghost_track_srcpad (TrackPrivate * tr_priv)
1465 GESTrack *track = tr_priv->track;
1467 pad = gst_element_get_static_pad (GST_ELEMENT (track), "src");
1469 GST_DEBUG ("track:%p, pad:%s:%s", track, GST_DEBUG_PAD_NAME (pad));
1471 /* Remember the pad */
1472 LOCK_DYN (tr_priv->timeline);
1473 GST_OBJECT_LOCK (track);
1477 for (tmp = tr_priv->timeline->priv->priv_tracks; tmp; tmp = g_list_next (tmp)) {
1478 TrackPrivate *tr_priv = (TrackPrivate *) tmp->data;
1480 if (!tr_priv->pad) {
1481 GST_LOG ("Found track without pad %p", tr_priv->track);
1485 GST_OBJECT_UNLOCK (track);
1488 GST_DEBUG ("Ghosting pad and adding it to ourself");
1489 padname = g_strdup_printf ("track_%p_src", track);
1490 tr_priv->ghostpad = gst_ghost_pad_new (padname, pad);
1492 gst_pad_set_active (tr_priv->ghostpad, TRUE);
1493 gst_element_add_pad (GST_ELEMENT (tr_priv->timeline), tr_priv->ghostpad);
1496 GST_DEBUG ("Signaling no-more-pads");
1497 gst_element_no_more_pads (GST_ELEMENT (tr_priv->timeline));
1500 tr_priv->probe_id = gst_pad_add_probe (pad,
1501 GST_PAD_PROBE_TYPE_EVENT_DOWNSTREAM,
1502 (GstPadProbeCallback) _pad_probe_cb, tr_priv->timeline, NULL);
1504 UNLOCK_DYN (tr_priv->timeline);
1508 timeline_add_element (GESTimeline * timeline, GESTimelineElement * element)
1510 GESTimelineElement *same_name =
1511 g_hash_table_lookup (timeline->priv->all_elements,
1514 GST_DEBUG_OBJECT (timeline, "Adding element: %s", element->name);
1516 GST_ERROR_OBJECT (timeline, "%s Already in the timeline %" GST_PTR_FORMAT,
1517 element->name, same_name);
1521 g_hash_table_insert (timeline->priv->all_elements,
1522 ges_timeline_element_get_name (element), gst_object_ref (element));
1524 timeline_tree_track_element (timeline->priv->tree, element);
1530 timeline_remove_element (GESTimeline * timeline, GESTimelineElement * element)
1532 if (g_hash_table_remove (timeline->priv->all_elements, element->name)) {
1533 timeline_tree_stop_tracking_element (timeline->priv->tree, element);
1542 timeline_fill_gaps (GESTimeline * timeline)
1546 for (tmp = timeline->tracks; tmp; tmp = tmp->next) {
1547 track_resort_and_fill_gaps (tmp->data);
1552 timeline_get_tree (GESTimeline * timeline)
1554 return timeline->priv->tree;
1561 * Creates a new empty #GESTimeline.
1563 * Returns: (transfer floating): The new timeline.
1567 ges_timeline_new (void)
1569 GESProject *project = ges_project_new (NULL);
1570 GESExtractable *timeline = g_object_new (GES_TYPE_TIMELINE, NULL);
1572 ges_extractable_set_asset (timeline, GES_ASSET (project));
1573 gst_object_unref (project);
1575 return GES_TIMELINE (timeline);
1579 * ges_timeline_new_from_uri:
1580 * @uri: the URI to load from
1581 * @error: (out) (allow-none): An error to be set in case something wrong happens or %NULL
1583 * Creates a timeline from the given URI.
1585 * Returns: (transfer floating) (nullable): A new timeline if the uri was loaded
1586 * successfully, or %NULL if the uri could not be loaded.
1589 ges_timeline_new_from_uri (const gchar * uri, GError ** error)
1592 GESProject *project = ges_project_new (uri);
1594 ret = GES_TIMELINE (ges_asset_extract (GES_ASSET (project), error));
1595 gst_object_unref (project);
1601 * ges_timeline_load_from_uri:
1602 * @timeline: an empty #GESTimeline into which to load the formatter
1603 * @uri: The URI to load from
1604 * @error: (out) (allow-none): An error to be set in case something wrong happens or %NULL
1606 * Loads the contents of URI into the given timeline.
1608 * Returns: %TRUE if the timeline was loaded successfully, or %FALSE if the uri
1609 * could not be loaded.
1612 ges_timeline_load_from_uri (GESTimeline * timeline, const gchar * uri,
1615 GESProject *project;
1616 gboolean ret = FALSE;
1618 g_return_val_if_fail (GES_IS_TIMELINE (timeline), FALSE);
1619 g_return_val_if_fail ((ges_extractable_get_asset (GES_EXTRACTABLE
1620 (timeline)) == NULL), FALSE);
1622 project = ges_project_new (uri);
1623 ret = ges_project_load (project, timeline, error);
1624 gst_object_unref (project);
1630 * ges_timeline_save_to_uri:
1631 * @timeline: a #GESTimeline
1632 * @uri: The location to save to
1633 * @formatter_asset: (allow-none): The formatter asset to use or %NULL. If %NULL,
1634 * will try to save in the same format as the one from which the timeline as been loaded
1635 * or default to the formatter with highest rank
1636 * @overwrite: %TRUE to overwrite file if it exists
1637 * @error: (out) (allow-none): An error to be set in case something wrong happens or %NULL
1639 * Saves the timeline to the given location
1641 * Returns: %TRUE if the timeline was successfully saved to the given location,
1645 ges_timeline_save_to_uri (GESTimeline * timeline, const gchar * uri,
1646 GESAsset * formatter_asset, gboolean overwrite, GError ** error)
1648 GESProject *project;
1650 gboolean ret, created_proj = FALSE;
1652 g_return_val_if_fail (GES_IS_TIMELINE (timeline), FALSE);
1654 GES_PROJECT (ges_extractable_get_asset (GES_EXTRACTABLE (timeline)));
1656 if (project == NULL) {
1657 project = ges_project_new (NULL);
1658 created_proj = TRUE;
1661 ret = ges_project_save (project, timeline, uri, formatter_asset, overwrite,
1665 gst_object_unref (project);
1671 * ges_timeline_get_groups:
1672 * @timeline: a #GESTimeline
1674 * Get the list of #GESGroup present in the Timeline.
1676 * Returns: (transfer none) (element-type GESGroup): the list of
1677 * #GESGroup that contain clips present in the timeline's layers.
1678 * Must not be changed.
1681 ges_timeline_get_groups (GESTimeline * timeline)
1683 g_return_val_if_fail (GES_IS_TIMELINE (timeline), NULL);
1684 CHECK_THREAD (timeline);
1686 return timeline->priv->groups;
1690 * ges_timeline_append_layer:
1691 * @timeline: a #GESTimeline
1693 * Append a newly created #GESLayer to @timeline
1694 * Note that you do not own any reference to the returned layer.
1696 * Returns: (transfer none): The newly created #GESLayer, or the last (empty)
1697 * #GESLayer of @timeline.
1700 ges_timeline_append_layer (GESTimeline * timeline)
1705 g_return_val_if_fail (GES_IS_TIMELINE (timeline), NULL);
1706 CHECK_THREAD (timeline);
1708 layer = ges_layer_new ();
1709 priority = g_list_length (timeline->layers);
1710 ges_layer_set_priority (layer, priority);
1712 ges_timeline_add_layer (timeline, layer);
1718 * ges_timeline_add_layer:
1719 * @timeline: a #GESTimeline
1720 * @layer: (transfer floating): the #GESLayer to add
1722 * Add the layer to the timeline. The reference to the @layer will be stolen
1725 * Returns: %TRUE if the layer was properly added, else %FALSE.
1728 ges_timeline_add_layer (GESTimeline * timeline, GESLayer * layer)
1730 gboolean auto_transition;
1731 GList *objects, *tmp;
1733 g_return_val_if_fail (GES_IS_TIMELINE (timeline), FALSE);
1734 g_return_val_if_fail (GES_IS_LAYER (layer), FALSE);
1735 CHECK_THREAD (timeline);
1737 GST_DEBUG ("timeline:%p, layer:%p", timeline, layer);
1739 /* We can only add a layer that doesn't already belong to another timeline */
1740 if (G_UNLIKELY (layer->timeline)) {
1741 GST_WARNING ("Layer belongs to another timeline, can't add it");
1742 gst_object_ref_sink (layer);
1743 gst_object_unref (layer);
1747 /* Add to the list of layers, make sure we don't already control it */
1748 if (G_UNLIKELY (g_list_find (timeline->layers, (gconstpointer) layer))) {
1749 GST_WARNING ("Layer is already controlled by this timeline");
1750 gst_object_ref_sink (layer);
1751 gst_object_unref (layer);
1755 auto_transition = ges_layer_get_auto_transition (layer);
1757 /* If the user doesn't explicitely set layer auto_transition, then set our */
1758 if (!auto_transition) {
1759 auto_transition = ges_timeline_get_auto_transition (timeline);
1760 ges_layer_set_auto_transition (layer, auto_transition);
1763 gst_object_ref_sink (layer);
1764 timeline->layers = g_list_insert_sorted (timeline->layers, layer,
1765 (GCompareFunc) sort_layers);
1767 /* Inform the layer that it belongs to a new timeline */
1768 ges_layer_set_timeline (layer, timeline);
1770 /* Connect to 'clip-added'/'clip-removed' signal from the new layer */
1771 g_signal_connect_after (layer, "clip-added",
1772 G_CALLBACK (layer_object_added_cb), timeline);
1773 g_signal_connect_after (layer, "clip-removed",
1774 G_CALLBACK (layer_object_removed_cb), timeline);
1775 g_signal_connect (layer, "notify::priority",
1776 G_CALLBACK (layer_priority_changed_cb), timeline);
1777 g_signal_connect (layer, "notify::auto-transition",
1778 G_CALLBACK (layer_auto_transition_changed_cb), timeline);
1780 GST_DEBUG ("Done adding layer, emitting 'layer-added' signal");
1781 g_signal_emit (timeline, ges_timeline_signals[LAYER_ADDED], 0, layer);
1783 /* add any existing clips to the timeline */
1784 objects = ges_layer_get_clips (layer);
1785 for (tmp = objects; tmp; tmp = tmp->next) {
1786 layer_object_added_cb (layer, tmp->data, timeline);
1787 gst_object_unref (tmp->data);
1790 g_list_free (objects);
1796 * ges_timeline_remove_layer:
1797 * @timeline: a #GESTimeline
1798 * @layer: the #GESLayer to remove
1800 * Removes the layer from the timeline. The reference that the @timeline holds on
1801 * the layer will be dropped. If you wish to use the @layer after calling this
1802 * method, you need to take a reference before calling.
1804 * Returns: %TRUE if the layer was properly removed, else %FALSE.
1808 ges_timeline_remove_layer (GESTimeline * timeline, GESLayer * layer)
1810 GList *layer_objects, *tmp;
1812 g_return_val_if_fail (GES_IS_TIMELINE (timeline), FALSE);
1813 g_return_val_if_fail (GES_IS_LAYER (layer), FALSE);
1814 CHECK_THREAD (timeline);
1816 GST_DEBUG ("timeline:%p, layer:%p", timeline, layer);
1818 if (G_UNLIKELY (!g_list_find (timeline->layers, layer))) {
1819 GST_WARNING ("Layer doesn't belong to this timeline");
1823 /* remove objects from any private data structures */
1825 layer_objects = ges_layer_get_clips (layer);
1826 for (tmp = layer_objects; tmp; tmp = tmp->next) {
1827 layer_object_removed_cb (layer, GES_CLIP (tmp->data), timeline);
1828 gst_object_unref (G_OBJECT (tmp->data));
1831 g_list_free (layer_objects);
1833 /* Disconnect signals */
1834 GST_DEBUG ("Disconnecting signal callbacks");
1835 g_signal_handlers_disconnect_by_func (layer, layer_object_added_cb, timeline);
1836 g_signal_handlers_disconnect_by_func (layer, layer_object_removed_cb,
1838 g_signal_handlers_disconnect_by_func (layer, layer_priority_changed_cb,
1840 g_signal_handlers_disconnect_by_func (layer,
1841 layer_auto_transition_changed_cb, timeline);
1843 timeline->layers = g_list_remove (timeline->layers, layer);
1844 ges_layer_set_timeline (layer, NULL);
1846 g_signal_emit (timeline, ges_timeline_signals[LAYER_REMOVED], 0, layer);
1848 gst_object_unref (layer);
1854 * ges_timeline_add_track:
1855 * @timeline: a #GESTimeline
1856 * @track: (transfer full): the #GESTrack to add
1858 * Add a track to the timeline. The reference to the track will be stolen by the
1861 * Returns: %TRUE if the track was properly added, else %FALSE.
1864 /* FIXME: create track elements for clips which have already been
1865 * added to existing layers.
1869 ges_timeline_add_track (GESTimeline * timeline, GESTrack * track)
1871 TrackPrivate *tr_priv;
1874 g_return_val_if_fail (GES_IS_TIMELINE (timeline), FALSE);
1875 g_return_val_if_fail (GES_IS_TRACK (track), FALSE);
1876 CHECK_THREAD (timeline);
1878 GST_DEBUG ("timeline:%p, track:%p", timeline, track);
1880 /* make sure we don't already control it */
1881 if (G_UNLIKELY (g_list_find (timeline->tracks, (gconstpointer) track))) {
1882 GST_WARNING ("Track is already controlled by this timeline");
1886 /* Add the track to ourself (as a GstBin)
1887 * Reference is stolen ! */
1888 if (G_UNLIKELY (!gst_bin_add (GST_BIN (timeline), GST_ELEMENT (track)))) {
1889 GST_WARNING ("Couldn't add track to ourself (GST)");
1893 tr_priv = g_new0 (TrackPrivate, 1);
1894 tr_priv->timeline = timeline;
1895 tr_priv->track = track;
1897 /* Add the track to the list of tracks we track */
1898 LOCK_DYN (timeline);
1899 timeline->priv->priv_tracks = g_list_append (timeline->priv->priv_tracks,
1901 UNLOCK_DYN (timeline);
1902 timeline->tracks = g_list_append (timeline->tracks, track);
1904 /* Inform the track that it's currently being used by ourself */
1905 ges_track_set_timeline (track, timeline);
1907 GST_DEBUG ("Done adding track, emitting 'track-added' signal");
1909 _ghost_track_srcpad (tr_priv);
1911 /* emit 'track-added' */
1912 g_signal_emit (timeline, ges_timeline_signals[TRACK_ADDED], 0, track);
1914 /* ensure that each existing clip has the opportunity to create a
1915 * track element for this track*/
1917 /* We connect to the object for the timeline editing mode management */
1918 g_signal_connect (G_OBJECT (track), "track-element-added",
1919 G_CALLBACK (track_element_added_cb), timeline);
1920 g_signal_connect (G_OBJECT (track), "track-element-removed",
1921 G_CALLBACK (track_element_removed_cb), timeline);
1923 for (tmp = timeline->layers; tmp; tmp = tmp->next) {
1924 GList *objects, *obj;
1925 objects = ges_layer_get_clips (tmp->data);
1927 for (obj = objects; obj; obj = obj->next) {
1928 GESClip *clip = obj->data;
1930 add_object_to_tracks (timeline, clip, track);
1931 gst_object_unref (clip);
1933 g_list_free (objects);
1936 /* FIXME Check if we should rollback if we can't sync state */
1937 gst_element_sync_state_with_parent (GST_ELEMENT (track));
1938 g_object_set (track, "message-forward", TRUE, NULL);
1944 * ges_timeline_remove_track:
1945 * @timeline: a #GESTimeline
1946 * @track: the #GESTrack to remove
1948 * Remove the @track from the @timeline. The reference stolen when adding the
1949 * @track will be removed. If you wish to use the @track after calling this
1950 * function you must ensure that you have a reference to it.
1952 * Returns: %TRUE if the @track was properly removed, else %FALSE.
1955 /* FIXME: release any track elements associated with this layer. currenly this
1956 * will not happen if you remove the track before removing *all*
1957 * clips which have a track element in this track.
1961 ges_timeline_remove_track (GESTimeline * timeline, GESTrack * track)
1964 TrackPrivate *tr_priv;
1965 GESTimelinePrivate *priv;
1967 g_return_val_if_fail (GES_IS_TRACK (track), FALSE);
1968 g_return_val_if_fail (GES_IS_TIMELINE (timeline), FALSE);
1969 CHECK_THREAD (timeline);
1971 GST_DEBUG ("timeline:%p, track:%p", timeline, track);
1973 priv = timeline->priv;
1974 LOCK_DYN (timeline);
1975 if (G_UNLIKELY (!(tmp = g_list_find_custom (priv->priv_tracks,
1976 track, (GCompareFunc) custom_find_track)))) {
1977 GST_WARNING ("Track doesn't belong to this timeline");
1978 UNLOCK_DYN (timeline);
1982 tr_priv = tmp->data;
1983 gst_object_unref (tr_priv->pad);
1984 priv->priv_tracks = g_list_remove (priv->priv_tracks, tr_priv);
1985 UNLOCK_DYN (timeline);
1986 timeline->tracks = g_list_remove (timeline->tracks, track);
1988 ges_track_set_timeline (track, NULL);
1990 /* Remove ghost pad */
1991 if (tr_priv->ghostpad) {
1992 GST_DEBUG ("Removing ghostpad");
1993 gst_pad_set_active (tr_priv->ghostpad, FALSE);
1994 gst_ghost_pad_set_target ((GstGhostPad *) tr_priv->ghostpad, NULL);
1995 gst_element_remove_pad (GST_ELEMENT (timeline), tr_priv->ghostpad);
1998 /* Remove pad-added/-removed handlers */
1999 g_signal_handlers_disconnect_by_func (track, track_element_added_cb,
2001 g_signal_handlers_disconnect_by_func (track, track_element_removed_cb,
2004 /* Signal track removal to all layers/objects */
2005 g_signal_emit (timeline, ges_timeline_signals[TRACK_REMOVED], 0, track);
2007 /* remove track from our bin */
2008 gst_object_ref (track);
2009 if (G_UNLIKELY (!gst_bin_remove (GST_BIN (timeline), GST_ELEMENT (track)))) {
2010 GST_WARNING ("Couldn't remove track to ourself (GST)");
2011 gst_object_unref (track);
2015 /* set track state to NULL */
2016 gst_element_set_state (GST_ELEMENT (track), GST_STATE_NULL);
2018 gst_object_unref (track);
2026 * ges_timeline_get_track_for_pad:
2027 * @timeline: The #GESTimeline
2030 * Search the #GESTrack corresponding to the given @timeline's @pad.
2032 * Returns: (transfer none) (nullable): The corresponding #GESTrack if it is
2033 * found, or %NULL if there is an error.
2037 ges_timeline_get_track_for_pad (GESTimeline * timeline, GstPad * pad)
2041 g_return_val_if_fail (GES_IS_TIMELINE (timeline), NULL);
2043 LOCK_DYN (timeline);
2044 for (tmp = timeline->priv->priv_tracks; tmp; tmp = g_list_next (tmp)) {
2045 TrackPrivate *tr_priv = (TrackPrivate *) tmp->data;
2046 if (pad == tr_priv->ghostpad) {
2047 UNLOCK_DYN (timeline);
2048 return tr_priv->track;
2051 UNLOCK_DYN (timeline);
2057 * ges_timeline_get_pad_for_track:
2058 * @timeline: The #GESTimeline
2059 * @track: The #GESTrack
2061 * Search the #GstPad corresponding to the given @timeline's @track.
2063 * Returns: (transfer none) (nullable): The corresponding #GstPad if it is
2064 * found, or %NULL if there is an error.
2068 ges_timeline_get_pad_for_track (GESTimeline * timeline, GESTrack * track)
2072 LOCK_DYN (timeline);
2073 for (tmp = timeline->priv->priv_tracks; tmp; tmp = g_list_next (tmp)) {
2074 TrackPrivate *tr_priv = (TrackPrivate *) tmp->data;
2076 if (track == tr_priv->track) {
2077 if (tr_priv->ghostpad)
2078 gst_object_ref (tr_priv->ghostpad);
2080 UNLOCK_DYN (timeline);
2081 return tr_priv->ghostpad;
2084 UNLOCK_DYN (timeline);
2090 * ges_timeline_get_tracks:
2091 * @timeline: a #GESTimeline
2093 * Returns the list of #GESTrack used by the Timeline.
2095 * Returns: (transfer full) (element-type GESTrack): A list of #GESTrack.
2096 * The caller should unref each track once he is done with them.
2099 ges_timeline_get_tracks (GESTimeline * timeline)
2101 g_return_val_if_fail (GES_IS_TIMELINE (timeline), NULL);
2102 CHECK_THREAD (timeline);
2104 return g_list_copy_deep (timeline->tracks, (GCopyFunc) gst_object_ref, NULL);
2108 * ges_timeline_get_layers:
2109 * @timeline: a #GESTimeline
2111 * Get the list of #GESLayer present in the Timeline.
2113 * Returns: (transfer full) (element-type GESLayer): the list of
2114 * #GESLayer present in the Timeline sorted by priority.
2115 * The caller should unref each Layer once he is done with them.
2118 ges_timeline_get_layers (GESTimeline * timeline)
2120 GList *tmp, *res = NULL;
2122 g_return_val_if_fail (GES_IS_TIMELINE (timeline), NULL);
2123 CHECK_THREAD (timeline);
2125 for (tmp = timeline->layers; tmp; tmp = g_list_next (tmp)) {
2126 res = g_list_insert_sorted (res, gst_object_ref (tmp->data),
2127 (GCompareFunc) sort_layers);
2134 track_commited_cb (GESTrack * track, GESTimeline * timeline)
2136 gboolean emit_commited = FALSE;
2137 GST_OBJECT_LOCK (timeline);
2138 timeline->priv->expected_commited -= 1;
2139 if (timeline->priv->expected_commited == 0)
2140 emit_commited = TRUE;
2141 g_signal_handlers_disconnect_by_func (track, track_commited_cb, timeline);
2142 GST_OBJECT_UNLOCK (timeline);
2144 if (emit_commited) {
2145 g_signal_emit (timeline, ges_timeline_signals[COMMITED], 0);
2149 /* Must be called with the timeline's DYN_LOCK */
2151 ges_timeline_commit_unlocked (GESTimeline * timeline)
2154 gboolean res = TRUE;
2156 GST_DEBUG_OBJECT (timeline, "commiting changes");
2158 timeline_tree_create_transitions (timeline->priv->tree,
2159 ges_timeline_find_auto_transition);
2160 for (tmp = timeline->layers; tmp; tmp = tmp->next) {
2161 GESLayer *layer = tmp->data;
2163 /* Ensure clip priorities are correct after an edit */
2164 ges_layer_resync_priorities (layer);
2167 timeline->priv->expected_commited =
2168 g_list_length (timeline->priv->priv_tracks);
2170 if (timeline->priv->expected_commited == 0) {
2171 g_signal_emit (timeline, ges_timeline_signals[COMMITED], 0);
2173 for (tmp = timeline->tracks; tmp; tmp = tmp->next) {
2174 g_signal_connect (tmp->data, "commited", G_CALLBACK (track_commited_cb),
2176 if (!ges_track_commit (GES_TRACK (tmp->data)))
2185 * ges_timeline_commit:
2186 * @timeline: a #GESTimeline
2188 * Commit all the pending changes of the clips contained in the
2191 * When changes happen in a timeline, they are not
2192 * directly executed in the non-linear engine. Call this method once you are
2193 * done with a set of changes and want it to be executed.
2195 * The #GESTimeline::commited signal will be emitted when the (possibly updated)
2196 * #GstPipeline is ready to output data again, except if the state of the
2197 * timeline was #GST_STATE_READY or #GST_STATE_NULL.
2199 * Note that all the pending changes will automatically be executed when the
2200 * timeline goes from #GST_STATE_READY to #GST_STATE_PAUSED, which usually is
2201 * triggered by corresponding state changes in a containing #GESPipeline.
2203 * You should not try to change the state of the timeline, seek it or add
2204 * tracks to it during a commit operation, that is between a call to this
2205 * function and after receiving the #GESTimeline::commited signal.
2207 * See #ges_timeline_commit_sync if you don't want to bother with waiting
2210 * Returns: %TRUE if pending changes were commited or %FALSE if nothing needed
2214 ges_timeline_commit (GESTimeline * timeline)
2218 g_return_val_if_fail (GES_IS_TIMELINE (timeline), FALSE);
2220 LOCK_DYN (timeline);
2221 ret = ges_timeline_commit_unlocked (timeline);
2222 UNLOCK_DYN (timeline);
2224 ges_timeline_emit_snapping (timeline, NULL, NULL, GST_CLOCK_TIME_NONE);
2229 commited_cb (GESTimeline * timeline)
2231 g_mutex_lock (&timeline->priv->commited_lock);
2232 g_cond_signal (&timeline->priv->commited_cond);
2233 g_mutex_unlock (&timeline->priv->commited_lock);
2237 * ges_timeline_commit_sync:
2238 * @timeline: a #GESTimeline
2240 * Commit all the pending changes of the #GESClips contained in the
2243 * Will return once the update is complete, that is when the
2244 * (possibly updated) #GstPipeline is ready to output data again, or if the
2245 * state of the timeline was #GST_STATE_READY or #GST_STATE_NULL.
2247 * This function will wait for any pending state change of the timeline by
2248 * calling #gst_element_get_state with a #GST_CLOCK_TIME_NONE timeout, you
2249 * should not try to change the state from another thread before this function
2252 * See #ges_timeline_commit for more information.
2254 * Returns: %TRUE if pending changes were commited or %FALSE if nothing needed
2258 ges_timeline_commit_sync (GESTimeline * timeline)
2261 gboolean wait_for_signal;
2263 g_return_val_if_fail (GES_IS_TIMELINE (timeline), FALSE);
2265 /* Let's make sure our state is stable */
2266 gst_element_get_state (GST_ELEMENT (timeline), NULL, NULL,
2267 GST_CLOCK_TIME_NONE);
2269 /* Let's make sure no track gets added between now and the actual commiting */
2270 LOCK_DYN (timeline);
2271 wait_for_signal = g_list_length (timeline->priv->priv_tracks) > 0
2272 && GST_STATE (timeline) >= GST_STATE_PAUSED;
2274 if (!wait_for_signal) {
2275 ret = ges_timeline_commit_unlocked (timeline);
2278 g_signal_connect (timeline, "commited", (GCallback) commited_cb, NULL);
2280 g_mutex_lock (&timeline->priv->commited_lock);
2282 ret = ges_timeline_commit_unlocked (timeline);
2283 g_cond_wait (&timeline->priv->commited_cond,
2284 &timeline->priv->commited_lock);
2285 g_mutex_unlock (&timeline->priv->commited_lock);
2286 g_signal_handler_disconnect (timeline, handler_id);
2289 UNLOCK_DYN (timeline);
2295 * ges_timeline_get_duration:
2296 * @timeline: a #GESTimeline
2298 * Get the current duration of @timeline
2300 * Returns: The current duration of @timeline
2303 ges_timeline_get_duration (GESTimeline * timeline)
2305 g_return_val_if_fail (GES_IS_TIMELINE (timeline), GST_CLOCK_TIME_NONE);
2306 CHECK_THREAD (timeline);
2308 return timeline->priv->duration;
2312 * ges_timeline_get_auto_transition:
2313 * @timeline: a #GESTimeline
2315 * Gets whether transitions are automatically added when objects
2318 * Returns: %TRUE if transitions are automatically added, else %FALSE.
2321 ges_timeline_get_auto_transition (GESTimeline * timeline)
2323 g_return_val_if_fail (GES_IS_TIMELINE (timeline), FALSE);
2324 CHECK_THREAD (timeline);
2326 return timeline->priv->auto_transition;
2330 * ges_timeline_set_auto_transition:
2331 * @timeline: a #GESLayer
2332 * @auto_transition: whether the auto_transition is active
2334 * Sets the layer to the given @auto_transition. See the documentation of the
2335 * property auto_transition for more information.
2338 ges_timeline_set_auto_transition (GESTimeline * timeline,
2339 gboolean auto_transition)
2344 g_return_if_fail (GES_IS_TIMELINE (timeline));
2345 CHECK_THREAD (timeline);
2347 timeline->priv->auto_transition = auto_transition;
2348 g_object_notify (G_OBJECT (timeline), "auto-transition");
2350 layers = timeline->layers;
2351 for (; layers; layers = layers->next) {
2352 layer = layers->data;
2353 ges_layer_set_auto_transition (layer, auto_transition);
2358 * ges_timeline_get_snapping_distance:
2359 * @timeline: a #GESTimeline
2361 * Gets the configured snapping distance of the timeline. See
2362 * the documentation of the property snapping_distance for more
2365 * Returns: The @snapping_distance property of the timeline
2368 ges_timeline_get_snapping_distance (GESTimeline * timeline)
2370 g_return_val_if_fail (GES_IS_TIMELINE (timeline), GST_CLOCK_TIME_NONE);
2371 CHECK_THREAD (timeline);
2373 return timeline->priv->snapping_distance;
2378 * ges_timeline_set_snapping_distance:
2379 * @timeline: a #GESLayer
2380 * @snapping_distance: whether the snapping_distance is active
2382 * Sets the @snapping_distance of the timeline. See the documentation of the
2383 * property snapping_distance for more information.
2386 ges_timeline_set_snapping_distance (GESTimeline * timeline,
2387 GstClockTime snapping_distance)
2389 g_return_if_fail (GES_IS_TIMELINE (timeline));
2390 CHECK_THREAD (timeline);
2392 timeline->priv->snapping_distance = snapping_distance;
2396 * ges_timeline_get_element:
2397 * @timeline: a #GESTimeline
2399 * Gets a #GESTimelineElement contained in the timeline
2401 * Returns: (transfer full) (nullable): The #GESTimelineElement or %NULL if
2404 GESTimelineElement *
2405 ges_timeline_get_element (GESTimeline * timeline, const gchar * name)
2407 GESTimelineElement *ret;
2409 g_return_val_if_fail (GES_IS_TIMELINE (timeline), NULL);
2410 CHECK_THREAD (timeline);
2412 ret = g_hash_table_lookup (timeline->priv->all_elements, name);
2415 return gst_object_ref (ret);
2417 #ifndef GST_DISABLE_GST_DEBUG
2419 GList *element_names, *tmp;
2420 element_names = g_hash_table_get_keys (timeline->priv->all_elements);
2422 GST_INFO_OBJECT (timeline, "Does not contain element %s", name);
2424 for (tmp = element_names; tmp; tmp = tmp->next) {
2425 GST_DEBUG_OBJECT (timeline, "Containes: %s", (gchar *) tmp->data);
2427 g_list_free (element_names);
2435 * ges_timeline_is_empty:
2436 * @timeline: a #GESTimeline
2438 * Check whether a #GESTimeline is empty or not
2440 * Returns: %TRUE if the timeline is empty %FALSE otherwize
2443 ges_timeline_is_empty (GESTimeline * timeline)
2445 GHashTableIter iter;
2446 gpointer key, value;
2448 g_return_val_if_fail (GES_IS_TIMELINE (timeline), FALSE);
2449 CHECK_THREAD (timeline);
2451 if (g_hash_table_size (timeline->priv->all_elements) == 0)
2454 g_hash_table_iter_init (&iter, timeline->priv->all_elements);
2455 while (g_hash_table_iter_next (&iter, &key, &value)) {
2456 if (GES_IS_SOURCE (value) &&
2457 ges_track_element_is_active (GES_TRACK_ELEMENT (value)))
2465 * ges_timeline_get_layer:
2466 * @timeline: The #GESTimeline to retrive a layer from
2467 * @priority: The priority of the layer to find
2469 * Retrieve the layer with @priority as a priority
2471 * Returns: (transfer full) (nullable): A #GESLayer or %NULL if no layer with
2472 * @priority was found
2477 ges_timeline_get_layer (GESTimeline * timeline, guint priority)
2480 GESLayer *layer = NULL;
2482 g_return_val_if_fail (GES_IS_TIMELINE (timeline), NULL);
2483 CHECK_THREAD (timeline);
2485 for (tmp = timeline->layers; tmp; tmp = tmp->next) {
2486 GESLayer *tmp_layer = GES_LAYER (tmp->data);
2489 g_object_get (tmp_layer, "priority", &tmp_priority, NULL);
2490 if (tmp_priority == priority) {
2491 layer = gst_object_ref (tmp_layer);
2500 * ges_timeline_paste_element:
2501 * @timeline: The #GESTimeline onto which the #GESTimelineElement should be pasted
2502 * @element: The #GESTimelineElement to paste
2503 * @position: The position in the timeline the element should
2504 * be pasted to, meaning it will become the start of @element
2505 * @layer_priority: The #GESLayer to which the element should be pasted to.
2506 * -1 means paste to the same layer from which the @element has been copied from.
2508 * Paste @element inside the timeline. @element must have been
2509 * created using ges_timeline_element_copy with deep=TRUE set,
2510 * i.e. it must be a deep copy, otherwise it will fail.
2512 * Returns: (transfer none): Shallow copy of the @element pasted
2514 GESTimelineElement *
2515 ges_timeline_paste_element (GESTimeline * timeline,
2516 GESTimelineElement * element, GstClockTime position, gint layer_priority)
2518 GESTimelineElement *res, *copied_from;
2519 GESTimelineElementClass *element_class;
2521 g_return_val_if_fail (GES_IS_TIMELINE (timeline), FALSE);
2522 g_return_val_if_fail (GES_IS_TIMELINE_ELEMENT (element), FALSE);
2523 CHECK_THREAD (timeline);
2525 element_class = GES_TIMELINE_ELEMENT_GET_CLASS (element);
2526 copied_from = ges_timeline_element_get_copied_from (element);
2529 GST_ERROR_OBJECT (element, "Is not being 'deeply' copied!");
2534 if (!element_class->paste) {
2535 GST_ERROR_OBJECT (element, "No paste vmethod implemented");
2541 * Currently the API only supports pasting onto the same layer from which
2542 * the @element has been copied from, i.e., @layer_priority needs to be -1.
2544 if (layer_priority != -1) {
2545 GST_WARNING_OBJECT (timeline,
2546 "Only -1 value for layer priority is supported");
2549 res = element_class->paste (element, copied_from, position);
2551 g_clear_object (&copied_from);
2553 return g_object_ref (res);
2557 * ges_timeline_move_layer:
2558 * @timeline: The timeline in which @layer must be
2559 * @layer: The layer to move at @new_layer_priority
2560 * @new_layer_priority: The index at which @layer should land
2562 * Moves @layer at @new_layer_priority meaning that @layer
2563 * we land at that position in the stack of layers inside
2564 * the timeline. If @new_layer_priority is superior than the number
2565 * of layers present in the time, it will move to the end of the
2569 ges_timeline_move_layer (GESTimeline * timeline, GESLayer * layer,
2570 guint new_layer_priority)
2572 gint current_priority;
2574 g_return_val_if_fail (GES_IS_TIMELINE (timeline), FALSE);
2575 g_return_val_if_fail (GES_IS_LAYER (layer), FALSE);
2576 g_return_val_if_fail (ges_layer_get_timeline (layer) == timeline, FALSE);
2577 CHECK_THREAD (timeline);
2579 current_priority = ges_layer_get_priority (layer);
2581 if (new_layer_priority == current_priority) {
2582 GST_DEBUG_OBJECT (timeline,
2583 "Nothing to do for %" GST_PTR_FORMAT ", same priorities", layer);
2588 timeline->layers = g_list_remove (timeline->layers, layer);
2589 timeline->layers = g_list_insert (timeline->layers, layer,
2590 (gint) new_layer_priority);
2592 _resync_layers (timeline);