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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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2596 lines
76 KiB
C
2596 lines
76 KiB
C
/* GStreamer Editing Services
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* Copyright (C) 2009 Edward Hervey <edward.hervey@collabora.co.uk>
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* 2009 Nokia Corporation
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* 2012 Thibault Saunier <tsaunier@gnome.org>
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* 2012 Collabora Ltd.
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* Author: Sebastian Dröge <sebastian.droege@collabora.co.uk>
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* 2019 Igalia S.L
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* Author: Thibault Saunier <tsaunier@igalia.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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/**
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* SECTION:gestimeline
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* @title: GESTimeline
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* @short_description: Multimedia timeline
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*
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* #GESTimeline is the central object for any multimedia timeline.
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*
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* Contains a list of #GESLayer which users should use to arrange the
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* various clips through time.
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*
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* The output type is determined by the #GESTrack that are set on
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* the #GESTimeline.
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*
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* To save/load a timeline, you can use the ges_timeline_load_from_uri() and
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* ges_timeline_save_to_uri() methods to use the default format. If you wish
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*
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* Note that any change you make in the timeline will not actually be taken
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* into account until you call the #ges_timeline_commit method.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include "ges-internal.h"
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#include "ges-project.h"
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#include "ges-container.h"
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#include "ges-timeline.h"
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#include "ges-timeline-tree.h"
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#include "ges-track.h"
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#include "ges-layer.h"
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#include "ges-auto-transition.h"
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#include "ges.h"
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static GPtrArray *select_tracks_for_object_default (GESTimeline * timeline,
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GESClip * clip, GESTrackElement * tr_obj, gpointer user_data);
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static void ges_extractable_interface_init (GESExtractableInterface * iface);
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static void ges_meta_container_interface_init
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(GESMetaContainerInterface * iface);
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GST_DEBUG_CATEGORY_STATIC (ges_timeline_debug);
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#undef GST_CAT_DEFAULT
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#define GST_CAT_DEFAULT ges_timeline_debug
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/* lock to protect dynamic callbacks, like pad-added */
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#define DYN_LOCK(timeline) (&GES_TIMELINE (timeline)->priv->dyn_mutex)
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#define LOCK_DYN(timeline) G_STMT_START { \
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GST_LOG_OBJECT (timeline, "Getting dynamic lock from %p", \
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g_thread_self()); \
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g_rec_mutex_lock (DYN_LOCK (timeline)); \
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GST_LOG_OBJECT (timeline, "Got Dynamic lock from %p", \
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g_thread_self()); \
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} G_STMT_END
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#define UNLOCK_DYN(timeline) G_STMT_START { \
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GST_LOG_OBJECT (timeline, "Unlocking dynamic lock from %p", \
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g_thread_self()); \
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g_rec_mutex_unlock (DYN_LOCK (timeline)); \
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GST_LOG_OBJECT (timeline, "Unlocked Dynamic lock from %p", \
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g_thread_self()); \
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} G_STMT_END
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#define CHECK_THREAD(timeline) g_assert(timeline->priv->valid_thread == g_thread_self())
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struct _GESTimelinePrivate
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{
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GNode *tree;
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/* The duration of the timeline */
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gint64 duration;
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/* The auto-transition of the timeline */
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gboolean auto_transition;
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/* Timeline edition modes and snapping management */
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guint64 snapping_distance;
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GRecMutex dyn_mutex;
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GList *priv_tracks;
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/* Avoid sorting layers when we are actually resyncing them ourself */
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gboolean resyncing_layers;
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GList *auto_transitions;
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/* Last snapping properties */
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GstClockTime last_snap_ts;
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GESTrackElement *last_snaped1;
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GESTrackElement *last_snaped2;
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/* This variable is set to %TRUE when it makes sense to update the transitions,
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* and %FALSE otherwize */
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gboolean needs_transitions_update;
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/* While we are creating and adding the TrackElements for a clip, we need to
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* ignore the child-added signal */
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GESClip *ignore_track_element_added;
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GList *groups;
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guint stream_start_group_id;
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GHashTable *all_elements;
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/* With GST_OBJECT_LOCK */
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guint expected_async_done;
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/* With GST_OBJECT_LOCK */
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guint expected_commited;
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/* For ges_timeline_commit_sync */
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GMutex commited_lock;
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GCond commited_cond;
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GThread *valid_thread;
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};
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/* private structure to contain our track-related information */
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typedef struct
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{
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GESTimeline *timeline;
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GESTrack *track;
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GstPad *pad; /* Pad from the track */
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GstPad *ghostpad;
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gulong probe_id;
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} TrackPrivate;
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enum
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{
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PROP_0,
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PROP_DURATION,
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PROP_AUTO_TRANSITION,
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PROP_SNAPPING_DISTANCE,
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PROP_UPDATE,
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PROP_LAST
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};
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static GParamSpec *properties[PROP_LAST];
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enum
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{
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TRACK_ADDED,
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TRACK_REMOVED,
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LAYER_ADDED,
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LAYER_REMOVED,
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GROUP_ADDED,
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GROUP_REMOVED,
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SNAPING_STARTED,
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SNAPING_ENDED,
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SELECT_TRACKS_FOR_OBJECT,
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COMMITED,
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LAST_SIGNAL
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};
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G_DEFINE_TYPE_WITH_CODE (GESTimeline, ges_timeline, GST_TYPE_BIN,
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G_ADD_PRIVATE (GESTimeline)
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G_IMPLEMENT_INTERFACE (GES_TYPE_EXTRACTABLE, ges_extractable_interface_init)
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G_IMPLEMENT_INTERFACE (GES_TYPE_META_CONTAINER,
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ges_meta_container_interface_init));
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static GstBinClass *parent_class;
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static guint ges_timeline_signals[LAST_SIGNAL] = { 0 };
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static gint custom_find_track (TrackPrivate * tr_priv, GESTrack * track);
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static guint nb_assets = 0;
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/* GESExtractable implementation */
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static gchar *
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extractable_check_id (GType type, const gchar * id)
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{
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gchar *res;
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if (id == NULL)
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res = g_strdup_printf ("%s-%i", "project", nb_assets);
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else
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res = g_strdup (id);
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nb_assets++;
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return res;
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}
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static gchar *
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extractable_get_id (GESExtractable * self)
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{
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GESAsset *asset;
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if (!(asset = ges_extractable_get_asset (self)))
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return NULL;
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return g_strdup (ges_asset_get_id (asset));
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}
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static void
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ges_extractable_interface_init (GESExtractableInterface * iface)
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{
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iface->asset_type = GES_TYPE_PROJECT;
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iface->check_id = (GESExtractableCheckId) extractable_check_id;
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iface->get_id = extractable_get_id;
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}
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static void
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ges_meta_container_interface_init (GESMetaContainerInterface * iface)
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{
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}
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/* GObject Standard vmethods*/
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static void
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ges_timeline_get_property (GObject * object, guint property_id,
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GValue * value, GParamSpec * pspec)
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{
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GESTimeline *timeline = GES_TIMELINE (object);
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switch (property_id) {
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case PROP_DURATION:
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g_value_set_uint64 (value, timeline->priv->duration);
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break;
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case PROP_AUTO_TRANSITION:
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g_value_set_boolean (value, timeline->priv->auto_transition);
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break;
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case PROP_SNAPPING_DISTANCE:
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g_value_set_uint64 (value, timeline->priv->snapping_distance);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
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}
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}
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static void
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ges_timeline_set_property (GObject * object, guint property_id,
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const GValue * value, GParamSpec * pspec)
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{
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GESTimeline *timeline = GES_TIMELINE (object);
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switch (property_id) {
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case PROP_AUTO_TRANSITION:
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ges_timeline_set_auto_transition (timeline, g_value_get_boolean (value));
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break;
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case PROP_SNAPPING_DISTANCE:
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timeline->priv->snapping_distance = g_value_get_uint64 (value);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
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}
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}
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static void
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ges_timeline_dispose (GObject * object)
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{
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GESTimeline *tl = GES_TIMELINE (object);
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GESTimelinePrivate *priv = tl->priv;
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GList *tmp, *groups;
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while (tl->layers) {
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GESLayer *layer = (GESLayer *) tl->layers->data;
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ges_timeline_remove_layer (GES_TIMELINE (object), layer);
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}
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/* FIXME: it should be possible to remove tracks before removing
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* layers, but at the moment this creates a problem because the track
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* objects aren't notified that their nleobjects have been destroyed.
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*/
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while (tl->tracks)
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ges_timeline_remove_track (GES_TIMELINE (object), tl->tracks->data);
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groups = g_list_copy (priv->groups);
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for (tmp = groups; tmp; tmp = tmp->next) {
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GList *elems = ges_container_ungroup (tmp->data, FALSE);
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g_list_free_full (elems, gst_object_unref);
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}
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g_list_free (priv->groups);
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g_list_free (groups);
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g_list_free_full (priv->auto_transitions, gst_object_unref);
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g_hash_table_unref (priv->all_elements);
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G_OBJECT_CLASS (ges_timeline_parent_class)->dispose (object);
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}
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static void
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ges_timeline_finalize (GObject * object)
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{
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GESTimeline *tl = GES_TIMELINE (object);
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g_rec_mutex_clear (&tl->priv->dyn_mutex);
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g_node_destroy (tl->priv->tree);
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G_OBJECT_CLASS (ges_timeline_parent_class)->finalize (object);
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}
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static void
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ges_timeline_handle_message (GstBin * bin, GstMessage * message)
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{
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GESTimeline *timeline = GES_TIMELINE (bin);
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if (GST_MESSAGE_TYPE (message) == GST_MESSAGE_ELEMENT) {
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GstMessage *amessage = NULL;
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const GstStructure *mstructure = gst_message_get_structure (message);
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if (gst_structure_has_name (mstructure, "NleCompositionStartUpdate")) {
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if (g_strcmp0 (gst_structure_get_string (mstructure, "reason"), "Seek")) {
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GST_INFO_OBJECT (timeline,
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"A composition is starting an update because of %s"
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" not considering async", gst_structure_get_string (mstructure,
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"reason"));
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goto forward;
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}
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GST_OBJECT_LOCK (timeline);
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if (timeline->priv->expected_async_done == 0) {
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amessage = gst_message_new_async_start (GST_OBJECT_CAST (bin));
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timeline->priv->expected_async_done = g_list_length (timeline->tracks);
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GST_INFO_OBJECT (timeline, "Posting ASYNC_START %s",
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gst_structure_get_string (mstructure, "reason"));
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}
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GST_OBJECT_UNLOCK (timeline);
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} else if (gst_structure_has_name (mstructure, "NleCompositionUpdateDone")) {
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if (g_strcmp0 (gst_structure_get_string (mstructure, "reason"), "Seek")) {
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GST_INFO_OBJECT (timeline,
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"A composition is done updating because of %s"
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" not considering async", gst_structure_get_string (mstructure,
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"reason"));
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goto forward;
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}
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GST_OBJECT_LOCK (timeline);
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timeline->priv->expected_async_done -= 1;
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if (timeline->priv->expected_async_done == 0) {
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amessage = gst_message_new_async_done (GST_OBJECT_CAST (bin),
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GST_CLOCK_TIME_NONE);
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GST_INFO_OBJECT (timeline, "Posting ASYNC_DONE %s",
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gst_structure_get_string (mstructure, "reason"));
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}
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GST_OBJECT_UNLOCK (timeline);
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}
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if (amessage)
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gst_element_post_message (GST_ELEMENT_CAST (bin), amessage);
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}
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forward:
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gst_element_post_message (GST_ELEMENT_CAST (bin), message);
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}
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/* we collect the first result */
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static gboolean
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_gst_array_accumulator (GSignalInvocationHint * ihint,
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GValue * return_accu, const GValue * handler_return, gpointer dummy)
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{
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gpointer array;
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array = g_value_get_boxed (handler_return);
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if (!(ihint->run_type & G_SIGNAL_RUN_CLEANUP))
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g_value_set_boxed (return_accu, array);
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return FALSE;
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}
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static void
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ges_timeline_class_init (GESTimelineClass * klass)
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{
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GObjectClass *object_class = G_OBJECT_CLASS (klass);
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GstBinClass *bin_class = GST_BIN_CLASS (klass);
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GST_DEBUG_CATEGORY_INIT (ges_timeline_debug, "gestimeline",
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GST_DEBUG_FG_YELLOW, "ges timeline");
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timeline_tree_init_debug ();
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parent_class = g_type_class_peek_parent (klass);
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object_class->get_property = ges_timeline_get_property;
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object_class->set_property = ges_timeline_set_property;
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object_class->dispose = ges_timeline_dispose;
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object_class->finalize = ges_timeline_finalize;
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bin_class->handle_message = GST_DEBUG_FUNCPTR (ges_timeline_handle_message);
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/**
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* GESTimeline:duration:
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*
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* Current duration (in nanoseconds) of the #GESTimeline
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*/
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properties[PROP_DURATION] =
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g_param_spec_uint64 ("duration", "Duration",
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"The duration of the timeline", 0, G_MAXUINT64,
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GST_CLOCK_TIME_NONE, G_PARAM_READABLE);
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g_object_class_install_property (object_class, PROP_DURATION,
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properties[PROP_DURATION]);
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/**
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* GESTimeline:auto-transition:
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*
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* Sets whether transitions are added automagically when clips overlap.
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*/
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g_object_class_install_property (object_class, PROP_AUTO_TRANSITION,
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g_param_spec_boolean ("auto-transition", "Auto-Transition",
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"whether the transitions are added", FALSE, G_PARAM_READWRITE));
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/**
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* GESTimeline:snapping-distance:
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*
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* Distance (in nanoseconds) from which a moving object will snap
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* with it neighboors. 0 means no snapping.
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*/
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properties[PROP_SNAPPING_DISTANCE] =
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g_param_spec_uint64 ("snapping-distance", "Snapping distance",
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"Distance from which moving an object will snap with neighboors", 0,
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G_MAXUINT64, 0, G_PARAM_READWRITE);
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g_object_class_install_property (object_class, PROP_SNAPPING_DISTANCE,
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properties[PROP_SNAPPING_DISTANCE]);
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/**
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* GESTimeline::track-added:
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* @timeline: the #GESTimeline
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* @track: the #GESTrack that was added to the timeline
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*
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* Will be emitted after the track was added to the timeline.
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*/
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ges_timeline_signals[TRACK_ADDED] =
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g_signal_new ("track-added", G_TYPE_FROM_CLASS (klass),
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G_SIGNAL_RUN_FIRST, G_STRUCT_OFFSET (GESTimelineClass, track_added), NULL,
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NULL, g_cclosure_marshal_generic, G_TYPE_NONE, 1, GES_TYPE_TRACK);
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/**
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* GESTimeline::track-removed:
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* @timeline: the #GESTimeline
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* @track: the #GESTrack that was removed from the timeline
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*
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* Will be emitted after the track was removed from the timeline.
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*/
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ges_timeline_signals[TRACK_REMOVED] =
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g_signal_new ("track-removed", G_TYPE_FROM_CLASS (klass),
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G_SIGNAL_RUN_FIRST, G_STRUCT_OFFSET (GESTimelineClass, track_removed),
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NULL, NULL, g_cclosure_marshal_generic, G_TYPE_NONE, 1, GES_TYPE_TRACK);
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/**
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* GESTimeline::layer-added:
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* @timeline: the #GESTimeline
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* @layer: the #GESLayer that was added to the timeline
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*
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* Will be emitted after a new layer is added to the timeline.
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*/
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ges_timeline_signals[LAYER_ADDED] =
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g_signal_new ("layer-added", G_TYPE_FROM_CLASS (klass),
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G_SIGNAL_RUN_FIRST, G_STRUCT_OFFSET (GESTimelineClass, layer_added), NULL,
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NULL, g_cclosure_marshal_generic, G_TYPE_NONE, 1, GES_TYPE_LAYER);
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/**
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* GESTimeline::layer-removed:
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* @timeline: the #GESTimeline
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* @layer: the #GESLayer that was removed from the timeline
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*
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* Will be emitted after the layer was removed from the timeline.
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*/
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ges_timeline_signals[LAYER_REMOVED] =
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g_signal_new ("layer-removed", G_TYPE_FROM_CLASS (klass),
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G_SIGNAL_RUN_FIRST, G_STRUCT_OFFSET (GESTimelineClass, layer_removed),
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NULL, NULL, g_cclosure_marshal_generic, G_TYPE_NONE, 1, GES_TYPE_LAYER);
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/**
|
|
* GESTimeline::group-added
|
|
* @timeline: the #GESTimeline
|
|
* @group: the #GESGroup
|
|
*
|
|
* Will be emitted after a new group is added to to the timeline.
|
|
*/
|
|
ges_timeline_signals[GROUP_ADDED] =
|
|
g_signal_new ("group-added", G_TYPE_FROM_CLASS (klass),
|
|
G_SIGNAL_RUN_FIRST, G_STRUCT_OFFSET (GESTimelineClass, group_added), NULL,
|
|
NULL, g_cclosure_marshal_generic, G_TYPE_NONE, 1, GES_TYPE_GROUP);
|
|
|
|
/**
|
|
* GESTimeline::group-removed
|
|
* @timeline: the #GESTimeline
|
|
* @group: the #GESGroup
|
|
* @children: (element-type GES.Container) (transfer container): a list of #GESContainer
|
|
*
|
|
* Will be emitted after a group has been removed from the timeline.
|
|
*/
|
|
ges_timeline_signals[GROUP_REMOVED] =
|
|
g_signal_new ("group-removed", G_TYPE_FROM_CLASS (klass),
|
|
G_SIGNAL_RUN_FIRST, G_STRUCT_OFFSET (GESTimelineClass, group_removed),
|
|
NULL, NULL, g_cclosure_marshal_generic, G_TYPE_NONE, 2, GES_TYPE_GROUP,
|
|
G_TYPE_PTR_ARRAY);
|
|
|
|
/**
|
|
* GESTimeline::snapping-started:
|
|
* @timeline: the #GESTimeline
|
|
* @obj1: the first #GESTrackElement that was snapping.
|
|
* @obj2: the second #GESTrackElement that was snapping.
|
|
* @position: the position where the two objects finally snapping.
|
|
*
|
|
* Will be emitted when the 2 #GESTrackElement first snapped
|
|
*/
|
|
ges_timeline_signals[SNAPING_STARTED] =
|
|
g_signal_new ("snapping-started", G_TYPE_FROM_CLASS (klass),
|
|
G_SIGNAL_RUN_LAST, 0, NULL, NULL, NULL,
|
|
G_TYPE_NONE, 3, GES_TYPE_TRACK_ELEMENT, GES_TYPE_TRACK_ELEMENT,
|
|
G_TYPE_UINT64);
|
|
|
|
/**
|
|
* GESTimeline::snapping-ended:
|
|
* @timeline: the #GESTimeline
|
|
* @obj1: the first #GESTrackElement that was snapping.
|
|
* @obj2: the second #GESTrackElement that was snapping.
|
|
* @position: the position where the two objects finally snapping.
|
|
*
|
|
* Will be emitted when the 2 #GESTrackElement ended to snap
|
|
*/
|
|
ges_timeline_signals[SNAPING_ENDED] =
|
|
g_signal_new ("snapping-ended", G_TYPE_FROM_CLASS (klass),
|
|
G_SIGNAL_RUN_LAST, 0, NULL, NULL, NULL,
|
|
G_TYPE_NONE, 3, GES_TYPE_TRACK_ELEMENT, GES_TYPE_TRACK_ELEMENT,
|
|
G_TYPE_UINT64);
|
|
|
|
/**
|
|
* GESTimeline::select-tracks-for-object:
|
|
* @timeline: the #GESTimeline
|
|
* @clip: The #GESClip on which @track_element will land
|
|
* @track_element: The #GESTrackElement for which to choose the tracks it should land into
|
|
*
|
|
* Returns: (transfer full) (element-type GESTrack): a #GPtrArray of #GESTrack-s where that object should be added
|
|
*/
|
|
ges_timeline_signals[SELECT_TRACKS_FOR_OBJECT] =
|
|
g_signal_new ("select-tracks-for-object", G_TYPE_FROM_CLASS (klass),
|
|
G_SIGNAL_RUN_LAST, 0, _gst_array_accumulator, NULL, NULL,
|
|
G_TYPE_PTR_ARRAY, 2, GES_TYPE_CLIP, GES_TYPE_TRACK_ELEMENT);
|
|
|
|
/**
|
|
* GESTimeline::commited:
|
|
* @timeline: the #GESTimeline
|
|
*
|
|
* This signal will be emitted once the changes initiated by #ges_timeline_commit
|
|
* have been executed in the backend. Use #ges_timeline_commit_sync if you
|
|
* don't need to do anything in the meantime.
|
|
*/
|
|
ges_timeline_signals[COMMITED] =
|
|
g_signal_new ("commited", G_TYPE_FROM_CLASS (klass),
|
|
G_SIGNAL_RUN_LAST, 0, NULL, NULL, NULL, G_TYPE_NONE, 0);
|
|
}
|
|
|
|
static void
|
|
ges_timeline_init (GESTimeline * self)
|
|
{
|
|
GESTimelinePrivate *priv = self->priv;
|
|
|
|
self->priv = ges_timeline_get_instance_private (self);
|
|
self->priv->tree = g_node_new (self);
|
|
|
|
priv = self->priv;
|
|
self->layers = NULL;
|
|
self->tracks = NULL;
|
|
self->priv->duration = 0;
|
|
self->priv->auto_transition = FALSE;
|
|
priv->snapping_distance = 0;
|
|
priv->expected_async_done = 0;
|
|
priv->expected_commited = 0;
|
|
|
|
self->priv->last_snap_ts = GST_CLOCK_TIME_NONE;
|
|
|
|
priv->priv_tracks = NULL;
|
|
priv->needs_transitions_update = TRUE;
|
|
|
|
priv->all_elements =
|
|
g_hash_table_new_full (g_str_hash, g_str_equal, g_free, gst_object_unref);
|
|
|
|
priv->stream_start_group_id = -1;
|
|
|
|
g_signal_connect_after (self, "select-tracks-for-object",
|
|
G_CALLBACK (select_tracks_for_object_default), NULL);
|
|
|
|
g_rec_mutex_init (&priv->dyn_mutex);
|
|
g_mutex_init (&priv->commited_lock);
|
|
priv->valid_thread = g_thread_self ();
|
|
}
|
|
|
|
/* Private methods */
|
|
|
|
static inline GESContainer *
|
|
get_toplevel_container (gpointer element)
|
|
{
|
|
GESTimelineElement *ret =
|
|
ges_timeline_element_get_toplevel_parent ((GESTimelineElement
|
|
*) (element));
|
|
|
|
/* We own a ref to the elements ourself */
|
|
gst_object_unref (ret);
|
|
return (GESContainer *) ret;
|
|
}
|
|
|
|
/* Sorting utils*/
|
|
static gint
|
|
sort_layers (gpointer a, gpointer b)
|
|
{
|
|
GESLayer *layer_a, *layer_b;
|
|
guint prio_a, prio_b;
|
|
|
|
layer_a = GES_LAYER (a);
|
|
layer_b = GES_LAYER (b);
|
|
|
|
prio_a = ges_layer_get_priority (layer_a);
|
|
prio_b = ges_layer_get_priority (layer_b);
|
|
|
|
if ((gint) prio_a > (guint) prio_b)
|
|
return 1;
|
|
if ((guint) prio_a < (guint) prio_b)
|
|
return -1;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void
|
|
_resync_layers (GESTimeline * timeline)
|
|
{
|
|
GList *tmp;
|
|
gint i = 0;
|
|
|
|
timeline->priv->resyncing_layers = TRUE;
|
|
for (tmp = timeline->layers; tmp; tmp = tmp->next) {
|
|
layer_set_priority (tmp->data, i, TRUE);
|
|
i++;
|
|
}
|
|
timeline->priv->resyncing_layers = FALSE;
|
|
}
|
|
|
|
void
|
|
timeline_update_duration (GESTimeline * timeline)
|
|
{
|
|
GstClockTime duration = timeline_tree_get_duration (timeline->priv->tree);
|
|
|
|
if (timeline->priv->duration != duration) {
|
|
GST_DEBUG ("track duration : %" GST_TIME_FORMAT " current : %"
|
|
GST_TIME_FORMAT, GST_TIME_ARGS (duration),
|
|
GST_TIME_ARGS (timeline->priv->duration));
|
|
|
|
timeline->priv->duration = duration;
|
|
|
|
g_object_notify_by_pspec (G_OBJECT (timeline), properties[PROP_DURATION]);
|
|
}
|
|
}
|
|
|
|
static gint
|
|
custom_find_track (TrackPrivate * tr_priv, GESTrack * track)
|
|
{
|
|
if (tr_priv->track == track)
|
|
return 0;
|
|
return -1;
|
|
}
|
|
|
|
static void
|
|
_destroy_auto_transition_cb (GESAutoTransition * auto_transition,
|
|
GESTimeline * timeline)
|
|
{
|
|
GESTimelinePrivate *priv = timeline->priv;
|
|
GESClip *transition = auto_transition->transition_clip;
|
|
GESLayer *layer = ges_clip_get_layer (transition);
|
|
|
|
ges_layer_remove_clip (layer, transition);
|
|
g_signal_handlers_disconnect_by_func (auto_transition,
|
|
_destroy_auto_transition_cb, timeline);
|
|
|
|
priv->auto_transitions =
|
|
g_list_remove (priv->auto_transitions, auto_transition);
|
|
gst_object_unref (auto_transition);
|
|
}
|
|
|
|
GESAutoTransition *
|
|
ges_timeline_create_transition (GESTimeline * timeline,
|
|
GESTrackElement * previous, GESTrackElement * next, GESClip * transition,
|
|
GESLayer * layer, guint64 start, guint64 duration)
|
|
{
|
|
GESAsset *asset;
|
|
GESAutoTransition *auto_transition;
|
|
|
|
if (transition == NULL) {
|
|
/* TODO make it possible to specify a Transition asset in the API */
|
|
asset = ges_asset_request (GES_TYPE_TRANSITION_CLIP, "crossfade", NULL);
|
|
transition =
|
|
ges_layer_add_asset (layer, asset, start, 0, duration,
|
|
ges_track_element_get_track_type (next));
|
|
g_object_unref (asset);
|
|
} else {
|
|
GST_DEBUG_OBJECT (timeline,
|
|
"Reusing already existing transition: %" GST_PTR_FORMAT, transition);
|
|
}
|
|
|
|
/* We know there is only 1 TrackElement */
|
|
auto_transition =
|
|
ges_auto_transition_new (GES_CONTAINER_CHILDREN (transition)->data,
|
|
previous, next);
|
|
|
|
g_signal_connect (auto_transition, "destroy-me",
|
|
G_CALLBACK (_destroy_auto_transition_cb), timeline);
|
|
|
|
timeline->priv->auto_transitions =
|
|
g_list_prepend (timeline->priv->auto_transitions, auto_transition);
|
|
|
|
return auto_transition;
|
|
}
|
|
|
|
GESAutoTransition *
|
|
ges_timeline_find_auto_transition (GESTimeline * timeline,
|
|
GESTrackElement * prev, GESTrackElement * next,
|
|
GstClockTime transition_duration)
|
|
{
|
|
GList *tmp;
|
|
|
|
for (tmp = timeline->priv->auto_transitions; tmp; tmp = tmp->next) {
|
|
GESAutoTransition *auto_trans = (GESAutoTransition *) tmp->data;
|
|
|
|
/* We already have a transition linked to one of the elements we want to
|
|
* find a transition for */
|
|
if (auto_trans->previous_source == prev || auto_trans->next_source == next) {
|
|
if (auto_trans->previous_source != prev
|
|
|| auto_trans->next_source != next) {
|
|
GST_ERROR_OBJECT (timeline, "Failed creating auto transition, "
|
|
" trying to have 3 clips overlapping, rolling back");
|
|
}
|
|
|
|
return auto_trans;
|
|
}
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static GESAutoTransition *
|
|
_create_auto_transition_from_transitions (GESTimeline * timeline,
|
|
GESTrackElement * prev, GESTrackElement * next,
|
|
GstClockTime transition_duration)
|
|
{
|
|
GList *tmp, *elements;
|
|
GESLayer *layer;
|
|
guint32 layer_prio = GES_TIMELINE_ELEMENT_LAYER_PRIORITY (prev);
|
|
GESTrack *track;
|
|
GESAutoTransition *auto_transition =
|
|
ges_timeline_find_auto_transition (timeline, prev, next,
|
|
transition_duration);
|
|
|
|
if (auto_transition)
|
|
return auto_transition;
|
|
|
|
layer = ges_timeline_get_layer (timeline, layer_prio);
|
|
track = ges_track_element_get_track (prev);
|
|
elements = ges_track_get_elements (track);
|
|
for (tmp = elements; tmp; tmp = tmp->next) {
|
|
GESTrackElement *maybe_transition = tmp->data;
|
|
|
|
if (ges_timeline_element_get_layer_priority (tmp->data) != layer_prio)
|
|
continue;
|
|
|
|
if (_START (maybe_transition) > _START (next))
|
|
break;
|
|
else if (_START (maybe_transition) != _START (next) ||
|
|
_DURATION (maybe_transition) != transition_duration)
|
|
continue;
|
|
else if (GES_IS_TRANSITION (maybe_transition)) {
|
|
/* Use that transition */
|
|
/* TODO We should make sure that the transition contains only
|
|
* TrackElement-s in @track and if it is not the case properly unlink the
|
|
* object to use it */
|
|
auto_transition = ges_timeline_create_transition (timeline, prev, next,
|
|
GES_CLIP (GES_TIMELINE_ELEMENT_PARENT (maybe_transition)), layer,
|
|
_START (next), transition_duration);
|
|
|
|
break;
|
|
}
|
|
}
|
|
gst_object_unref (layer);
|
|
g_list_free_full (elements, gst_object_unref);
|
|
|
|
return auto_transition;
|
|
}
|
|
|
|
void
|
|
ges_timeline_emit_snapping (GESTimeline * timeline, GESTimelineElement * elem1,
|
|
GESTimelineElement * elem2, GstClockTime snap_time)
|
|
{
|
|
GESTimelinePrivate *priv = timeline->priv;
|
|
GstClockTime last_snap_ts = timeline->priv->last_snap_ts;
|
|
|
|
if (!GST_CLOCK_TIME_IS_VALID (snap_time)) {
|
|
if (priv->last_snaped1 != NULL && priv->last_snaped2 != NULL) {
|
|
g_signal_emit (timeline, ges_timeline_signals[SNAPING_ENDED], 0,
|
|
priv->last_snaped1, priv->last_snaped2, last_snap_ts);
|
|
priv->last_snaped1 = NULL;
|
|
priv->last_snaped2 = NULL;
|
|
priv->last_snap_ts = GST_CLOCK_TIME_NONE;
|
|
}
|
|
|
|
return;
|
|
}
|
|
|
|
g_assert (elem1 != elem2);
|
|
if (GES_IS_CLIP (elem1)) {
|
|
g_assert (GES_CONTAINER_CHILDREN (elem1));
|
|
elem1 = GES_CONTAINER_CHILDREN (elem1)->data;
|
|
}
|
|
|
|
if (GES_IS_CLIP (elem2)) {
|
|
g_assert (GES_CONTAINER_CHILDREN (elem2));
|
|
elem2 = GES_CONTAINER_CHILDREN (elem2)->data;
|
|
}
|
|
|
|
if (last_snap_ts != snap_time) {
|
|
g_signal_emit (timeline, ges_timeline_signals[SNAPING_ENDED], 0,
|
|
priv->last_snaped1, priv->last_snaped2, (last_snap_ts));
|
|
|
|
/* We want the snap start signal to be emited anyway */
|
|
timeline->priv->last_snap_ts = GST_CLOCK_TIME_NONE;
|
|
}
|
|
|
|
if (!GST_CLOCK_TIME_IS_VALID (timeline->priv->last_snap_ts)) {
|
|
priv->last_snaped1 = (GESTrackElement *) elem1;
|
|
priv->last_snaped2 = (GESTrackElement *) elem2;
|
|
timeline->priv->last_snap_ts = snap_time;
|
|
|
|
g_signal_emit (timeline, ges_timeline_signals[SNAPING_STARTED], 0,
|
|
elem1, elem2, snap_time);
|
|
}
|
|
|
|
}
|
|
|
|
gboolean
|
|
ges_timeline_trim_object_simple (GESTimeline * timeline,
|
|
GESTimelineElement * element, guint32 new_layer_priority,
|
|
GList * layers, GESEdge edge, guint64 position, gboolean snapping)
|
|
{
|
|
|
|
return timeline_trim_object (timeline, element, new_layer_priority, layers,
|
|
edge, position);
|
|
}
|
|
|
|
gboolean
|
|
timeline_ripple_object (GESTimeline * timeline, GESTimelineElement * obj,
|
|
gint new_layer_priority, GList * layers, GESEdge edge, guint64 position)
|
|
{
|
|
gboolean res = TRUE;
|
|
guint64 new_duration;
|
|
GstClockTimeDiff diff;
|
|
|
|
switch (edge) {
|
|
case GES_EDGE_NONE:
|
|
GST_DEBUG ("Simply rippling");
|
|
diff = GST_CLOCK_DIFF (position, _START (obj));
|
|
|
|
timeline->priv->needs_transitions_update = FALSE;
|
|
res = timeline_tree_ripple (timeline->priv->tree,
|
|
(gint64) GES_TIMELINE_ELEMENT_LAYER_PRIORITY (obj) -
|
|
(gint64) new_layer_priority, diff, obj,
|
|
GES_EDGE_NONE, timeline->priv->snapping_distance);
|
|
timeline->priv->needs_transitions_update = TRUE;
|
|
|
|
break;
|
|
case GES_EDGE_END:
|
|
GST_DEBUG ("Rippling end");
|
|
|
|
timeline->priv->needs_transitions_update = FALSE;
|
|
new_duration =
|
|
CLAMP (position - obj->start, 0, obj->maxduration - obj->inpoint);
|
|
res =
|
|
timeline_tree_ripple (timeline->priv->tree,
|
|
(gint64) GES_TIMELINE_ELEMENT_LAYER_PRIORITY (obj) -
|
|
(gint64) new_layer_priority,
|
|
_DURATION (obj) - new_duration, obj,
|
|
GES_EDGE_END, timeline->priv->snapping_distance);
|
|
timeline->priv->needs_transitions_update = TRUE;
|
|
|
|
GST_DEBUG ("Done Rippling end");
|
|
break;
|
|
case GES_EDGE_START:
|
|
GST_INFO ("Ripple start doesn't make sense, trimming instead");
|
|
if (!timeline_trim_object (timeline, obj, -1, layers, edge, position))
|
|
goto error;
|
|
break;
|
|
default:
|
|
GST_DEBUG ("Can not ripple edge: %i", edge);
|
|
|
|
break;
|
|
}
|
|
|
|
return res;
|
|
|
|
error:
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
gboolean
|
|
timeline_slide_object (GESTimeline * timeline, GESTrackElement * obj,
|
|
GList * layers, GESEdge edge, guint64 position)
|
|
{
|
|
|
|
/* FIXME implement me! */
|
|
GST_FIXME_OBJECT (timeline, "Slide mode editing not implemented yet");
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
static gboolean
|
|
_trim_transition (GESTimeline * timeline, GESTimelineElement * element,
|
|
GESEdge edge, GstClockTime position)
|
|
{
|
|
GList *tmp;
|
|
GESLayer *layer = ges_timeline_get_layer (timeline,
|
|
GES_TIMELINE_ELEMENT_LAYER_PRIORITY (element));
|
|
|
|
if (!ges_layer_get_auto_transition (layer))
|
|
goto fail;
|
|
|
|
gst_object_unref (layer);
|
|
for (tmp = timeline->priv->auto_transitions; tmp; tmp = tmp->next) {
|
|
GESAutoTransition *auto_transition = tmp->data;
|
|
|
|
if (GES_TIMELINE_ELEMENT (auto_transition->transition) == element ||
|
|
GES_TIMELINE_ELEMENT (auto_transition->transition_clip) == element) {
|
|
/* Trimming an auto transition means trimming its neighboors */
|
|
if (!auto_transition->positioning) {
|
|
if (edge == GES_EDGE_END) {
|
|
ges_container_edit (GES_CONTAINER (auto_transition->previous_clip),
|
|
NULL, -1, GES_EDIT_MODE_TRIM, GES_EDGE_END, position);
|
|
} else {
|
|
ges_container_edit (GES_CONTAINER (auto_transition->next_clip),
|
|
NULL, -1, GES_EDIT_MODE_TRIM, GES_EDGE_START, position);
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
return FALSE;
|
|
}
|
|
}
|
|
|
|
return FALSE;
|
|
|
|
fail:
|
|
gst_object_unref (layer);
|
|
return FALSE;
|
|
}
|
|
|
|
|
|
gboolean
|
|
timeline_trim_object (GESTimeline * timeline, GESTimelineElement * object,
|
|
guint32 new_layer_priority, GList * layers, GESEdge edge, guint64 position)
|
|
{
|
|
if ((GES_IS_TRANSITION (object) || GES_IS_TRANSITION_CLIP (object)) &&
|
|
!ELEMENT_FLAG_IS_SET (object, GES_TIMELINE_ELEMENT_SET_SIMPLE)) {
|
|
return _trim_transition (timeline, object, edge, position);
|
|
}
|
|
|
|
return timeline_tree_trim (timeline->priv->tree,
|
|
GES_TIMELINE_ELEMENT (object), new_layer_priority > 0 ? (gint64)
|
|
ges_timeline_element_get_layer_priority (GES_TIMELINE_ELEMENT (object)) -
|
|
new_layer_priority : 0, edge == GES_EDGE_END ? GST_CLOCK_DIFF (position,
|
|
_START (object) + _DURATION (object)) : GST_CLOCK_DIFF (position,
|
|
GES_TIMELINE_ELEMENT_START (object)), edge,
|
|
timeline->priv->snapping_distance);
|
|
}
|
|
|
|
gboolean
|
|
timeline_roll_object (GESTimeline * timeline, GESTimelineElement * element,
|
|
GList * layers, GESEdge edge, guint64 position)
|
|
{
|
|
return timeline_tree_roll (timeline->priv->tree,
|
|
element,
|
|
(edge == GES_EDGE_END) ?
|
|
GST_CLOCK_DIFF (position, _END (element)) :
|
|
GST_CLOCK_DIFF (position, _START (element)),
|
|
edge, timeline->priv->snapping_distance);
|
|
}
|
|
|
|
gboolean
|
|
timeline_move_object (GESTimeline * timeline, GESTimelineElement * object,
|
|
guint32 new_layer_priority, GList * layers, GESEdge edge, guint64 position)
|
|
{
|
|
gboolean ret = FALSE;
|
|
GstClockTimeDiff offset = edge == GES_EDGE_END ?
|
|
GST_CLOCK_DIFF (position, _START (object) + _DURATION (object)) :
|
|
GST_CLOCK_DIFF (position, GES_TIMELINE_ELEMENT_START (object));
|
|
|
|
ret = timeline_tree_move (timeline->priv->tree,
|
|
GES_TIMELINE_ELEMENT (object), new_layer_priority < 0 ? 0 : (gint64)
|
|
ges_timeline_element_get_layer_priority (GES_TIMELINE_ELEMENT (object)) -
|
|
new_layer_priority, offset, edge, timeline->priv->snapping_distance);
|
|
|
|
return ret;
|
|
}
|
|
|
|
gboolean
|
|
ges_timeline_move_object_simple (GESTimeline * timeline,
|
|
GESTimelineElement * element, GList * layers, GESEdge edge,
|
|
guint64 position)
|
|
{
|
|
return timeline_move_object (timeline, element,
|
|
ges_timeline_element_get_layer_priority (element), NULL, edge, position);
|
|
}
|
|
|
|
void
|
|
timeline_add_group (GESTimeline * timeline, GESGroup * group)
|
|
{
|
|
GST_DEBUG_OBJECT (timeline, "Adding group %" GST_PTR_FORMAT, group);
|
|
|
|
timeline->priv->groups = g_list_prepend (timeline->priv->groups,
|
|
gst_object_ref_sink (group));
|
|
|
|
ges_timeline_element_set_timeline (GES_TIMELINE_ELEMENT (group), timeline);
|
|
}
|
|
|
|
void
|
|
timeline_update_transition (GESTimeline * timeline)
|
|
{
|
|
GList *tmp, *auto_transs;
|
|
|
|
auto_transs = g_list_copy (timeline->priv->auto_transitions);
|
|
for (tmp = auto_transs; tmp; tmp = tmp->next)
|
|
ges_auto_transition_update (tmp->data);
|
|
g_list_free (auto_transs);
|
|
}
|
|
|
|
/**
|
|
* timeline_emit_group_added:
|
|
* @timeline: a #GESTimeline
|
|
* @group: group that was added
|
|
*
|
|
* Emit group-added signal.
|
|
*/
|
|
void
|
|
timeline_emit_group_added (GESTimeline * timeline, GESGroup * group)
|
|
{
|
|
g_signal_emit (timeline, ges_timeline_signals[GROUP_ADDED], 0, group);
|
|
}
|
|
|
|
/**
|
|
* timeline_emit_group_removed:
|
|
* @timeline: a #GESTimeline
|
|
* @group: group that was removed
|
|
*
|
|
* Emit group-removed signal.
|
|
*/
|
|
void
|
|
timeline_emit_group_removed (GESTimeline * timeline, GESGroup * group,
|
|
GPtrArray * array)
|
|
{
|
|
g_signal_emit (timeline, ges_timeline_signals[GROUP_REMOVED], 0, group,
|
|
array);
|
|
}
|
|
|
|
void
|
|
timeline_remove_group (GESTimeline * timeline, GESGroup * group)
|
|
{
|
|
GST_DEBUG_OBJECT (timeline, "Removing group %" GST_PTR_FORMAT, group);
|
|
|
|
timeline->priv->groups = g_list_remove (timeline->priv->groups, group);
|
|
|
|
ges_timeline_element_set_timeline (GES_TIMELINE_ELEMENT (group), NULL);
|
|
gst_object_unref (group);
|
|
}
|
|
|
|
static GPtrArray *
|
|
select_tracks_for_object_default (GESTimeline * timeline,
|
|
GESClip * clip, GESTrackElement * tr_object, gpointer user_data)
|
|
{
|
|
GPtrArray *result;
|
|
GList *tmp;
|
|
|
|
result = g_ptr_array_new ();
|
|
|
|
for (tmp = timeline->tracks; tmp; tmp = tmp->next) {
|
|
GESTrack *track = GES_TRACK (tmp->data);
|
|
|
|
if ((track->type & ges_track_element_get_track_type (tr_object))) {
|
|
gst_object_ref (track);
|
|
g_ptr_array_add (result, track);
|
|
}
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
static void
|
|
add_object_to_tracks (GESTimeline * timeline, GESClip * clip, GESTrack * track)
|
|
{
|
|
gint i;
|
|
GList *tmp, *list;
|
|
GESTrackType types, visited_type = GES_TRACK_TYPE_UNKNOWN;
|
|
|
|
GST_DEBUG_OBJECT (timeline, "Creating %" GST_PTR_FORMAT
|
|
" trackelements and adding them to our tracks", clip);
|
|
|
|
types = ges_clip_get_supported_formats (clip);
|
|
if (track) {
|
|
if ((types & track->type) == 0)
|
|
return;
|
|
types = track->type;
|
|
}
|
|
|
|
for (i = 0, tmp = timeline->tracks; tmp; tmp = tmp->next, i++) {
|
|
GESTrack *track = GES_TRACK (tmp->data);
|
|
|
|
if (((track->type & types) == 0 || (track->type & visited_type)))
|
|
continue;
|
|
|
|
list = ges_clip_create_track_elements (clip, track->type);
|
|
g_list_free (list);
|
|
}
|
|
}
|
|
|
|
static void
|
|
layer_auto_transition_changed_cb (GESLayer * layer,
|
|
GParamSpec * arg G_GNUC_UNUSED, GESTimeline * timeline)
|
|
{
|
|
GList *tmp, *clips;
|
|
|
|
timeline_tree_create_transitions (timeline->priv->tree,
|
|
_create_auto_transition_from_transitions);
|
|
clips = ges_layer_get_clips (layer);
|
|
for (tmp = clips; tmp; tmp = tmp->next) {
|
|
if (GES_IS_TRANSITION_CLIP (tmp->data)) {
|
|
GList *tmpautotrans;
|
|
gboolean found = FALSE;
|
|
|
|
for (tmpautotrans = timeline->priv->auto_transitions; tmpautotrans;
|
|
tmpautotrans = tmpautotrans->next) {
|
|
if (GES_AUTO_TRANSITION (tmpautotrans->data)->transition_clip ==
|
|
tmp->data) {
|
|
found = TRUE;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (!found) {
|
|
GST_ERROR_OBJECT (timeline,
|
|
"Transition %s could not be wrapped into an auto transition"
|
|
" REMOVING it", GES_TIMELINE_ELEMENT_NAME (tmp->data));
|
|
|
|
ges_layer_remove_clip (layer, tmp->data);
|
|
}
|
|
}
|
|
}
|
|
g_list_free_full (clips, gst_object_unref);
|
|
}
|
|
|
|
static void
|
|
clip_track_element_added_cb (GESClip * clip,
|
|
GESTrackElement * track_element, GESTimeline * timeline)
|
|
{
|
|
guint i;
|
|
GESTrack *track;
|
|
gboolean is_source;
|
|
GPtrArray *tracks = NULL;
|
|
GESTrackElement *existing_src = NULL;
|
|
|
|
if (timeline->priv->ignore_track_element_added == clip) {
|
|
GST_DEBUG_OBJECT (timeline, "Ignoring element added (%" GST_PTR_FORMAT
|
|
" in %" GST_PTR_FORMAT, track_element, clip);
|
|
|
|
return;
|
|
}
|
|
|
|
if (ges_track_element_get_track (track_element)) {
|
|
GST_WARNING_OBJECT (track_element, "Already in a track");
|
|
|
|
return;
|
|
}
|
|
|
|
g_signal_emit (G_OBJECT (timeline),
|
|
ges_timeline_signals[SELECT_TRACKS_FOR_OBJECT], 0, clip, track_element,
|
|
&tracks);
|
|
|
|
if (!tracks || tracks->len == 0) {
|
|
GST_WARNING_OBJECT (timeline, "Got no Track to add %p (type %s), removing"
|
|
" from clip (stopping 'child-added' signal emission).",
|
|
track_element, ges_track_type_name (ges_track_element_get_track_type
|
|
(track_element)));
|
|
|
|
if (tracks)
|
|
g_ptr_array_unref (tracks);
|
|
|
|
g_signal_stop_emission_by_name (clip, "child-added");
|
|
ges_container_remove (GES_CONTAINER (clip),
|
|
GES_TIMELINE_ELEMENT (track_element));
|
|
|
|
return;
|
|
}
|
|
|
|
/* We add the current element to the first track */
|
|
track = g_ptr_array_index (tracks, 0);
|
|
|
|
is_source = g_type_is_a (G_OBJECT_TYPE (track_element), GES_TYPE_SOURCE);
|
|
if (is_source)
|
|
existing_src = ges_clip_find_track_element (clip, track, GES_TYPE_SOURCE);
|
|
|
|
if (existing_src == NULL) {
|
|
if (!ges_track_add_element (track, track_element)) {
|
|
GST_WARNING_OBJECT (clip, "Failed to add track element to track");
|
|
ges_container_remove (GES_CONTAINER (clip),
|
|
GES_TIMELINE_ELEMENT (track_element));
|
|
g_ptr_array_unref (tracks);
|
|
return;
|
|
}
|
|
} else {
|
|
GST_INFO_OBJECT (clip, "Already had a Source Element in %" GST_PTR_FORMAT
|
|
" of type %s, removing new one. (stopping 'child-added' emission)",
|
|
track, G_OBJECT_TYPE_NAME (track_element));
|
|
g_signal_stop_emission_by_name (clip, "child-added");
|
|
ges_container_remove (GES_CONTAINER (clip),
|
|
GES_TIMELINE_ELEMENT (track_element));
|
|
}
|
|
gst_object_unref (track);
|
|
g_clear_object (&existing_src);
|
|
|
|
/* And create copies to add to other tracks */
|
|
timeline->priv->ignore_track_element_added = clip;
|
|
for (i = 1; i < tracks->len; i++) {
|
|
GESTrack *track;
|
|
GESTrackElement *track_element_copy;
|
|
|
|
track = g_ptr_array_index (tracks, i);
|
|
if (is_source)
|
|
existing_src = ges_clip_find_track_element (clip, track, GES_TYPE_SOURCE);
|
|
if (existing_src == NULL) {
|
|
ges_container_remove (GES_CONTAINER (clip),
|
|
GES_TIMELINE_ELEMENT (track_element));
|
|
gst_object_unref (track);
|
|
g_ptr_array_unref (tracks);
|
|
continue;
|
|
} else {
|
|
GST_INFO_OBJECT (clip, "Already had a Source Element in %" GST_PTR_FORMAT
|
|
" of type %s, removing new one. (stopping 'child-added' emission)",
|
|
track, G_OBJECT_TYPE_NAME (track_element));
|
|
g_signal_stop_emission_by_name (clip, "child-added");
|
|
ges_container_remove (GES_CONTAINER (clip),
|
|
GES_TIMELINE_ELEMENT (track_element));
|
|
}
|
|
g_clear_object (&existing_src);
|
|
|
|
track_element_copy =
|
|
GES_TRACK_ELEMENT (ges_timeline_element_copy (GES_TIMELINE_ELEMENT
|
|
(track_element), TRUE));
|
|
|
|
GST_LOG_OBJECT (timeline, "Trying to add %p to track %p",
|
|
track_element_copy, track);
|
|
|
|
if (!ges_container_add (GES_CONTAINER (clip),
|
|
GES_TIMELINE_ELEMENT (track_element_copy))) {
|
|
GST_WARNING_OBJECT (clip, "Failed to add track element to clip");
|
|
gst_object_unref (track_element_copy);
|
|
g_ptr_array_unref (tracks);
|
|
return;
|
|
}
|
|
|
|
if (!ges_track_add_element (track, track_element_copy)) {
|
|
GST_WARNING_OBJECT (clip, "Failed to add track element to track");
|
|
ges_container_remove (GES_CONTAINER (clip),
|
|
GES_TIMELINE_ELEMENT (track_element_copy));
|
|
gst_object_unref (track_element_copy);
|
|
g_ptr_array_unref (tracks);
|
|
return;
|
|
}
|
|
|
|
gst_object_unref (track);
|
|
}
|
|
timeline->priv->ignore_track_element_added = NULL;
|
|
g_ptr_array_unref (tracks);
|
|
if (GES_IS_SOURCE (track_element))
|
|
timeline_tree_create_transitions (timeline->priv->tree,
|
|
ges_timeline_find_auto_transition);
|
|
}
|
|
|
|
static void
|
|
clip_track_element_removed_cb (GESClip * clip,
|
|
GESTrackElement * track_element, GESTimeline * timeline)
|
|
{
|
|
GESTrack *track = ges_track_element_get_track (track_element);
|
|
|
|
if (track)
|
|
ges_track_remove_element (track, track_element);
|
|
}
|
|
|
|
static void
|
|
layer_object_added_cb (GESLayer * layer, GESClip * clip, GESTimeline * timeline)
|
|
{
|
|
GESProject *project;
|
|
|
|
/* We make sure not to be connected twice */
|
|
g_signal_handlers_disconnect_by_func (clip, clip_track_element_added_cb,
|
|
timeline);
|
|
g_signal_handlers_disconnect_by_func (clip, clip_track_element_removed_cb,
|
|
timeline);
|
|
|
|
/* And we connect to the object */
|
|
g_signal_connect (clip, "child-added",
|
|
G_CALLBACK (clip_track_element_added_cb), timeline);
|
|
g_signal_connect (clip, "child-removed",
|
|
G_CALLBACK (clip_track_element_removed_cb), timeline);
|
|
|
|
if (ges_clip_is_moving_from_layer (clip)) {
|
|
GST_DEBUG ("Clip %p moving from one layer to another, not creating "
|
|
"TrackElement", clip);
|
|
timeline_tree_create_transitions (timeline->priv->tree,
|
|
ges_timeline_find_auto_transition);
|
|
return;
|
|
}
|
|
|
|
add_object_to_tracks (timeline, clip, NULL);
|
|
|
|
GST_DEBUG ("Making sure that the asset is in our project");
|
|
project =
|
|
GES_PROJECT (ges_extractable_get_asset (GES_EXTRACTABLE (timeline)));
|
|
ges_project_add_asset (project,
|
|
ges_extractable_get_asset (GES_EXTRACTABLE (clip)));
|
|
|
|
GST_DEBUG ("Done");
|
|
}
|
|
|
|
static void
|
|
layer_priority_changed_cb (GESLayer * layer,
|
|
GParamSpec * arg G_GNUC_UNUSED, GESTimeline * timeline)
|
|
{
|
|
if (timeline->priv->resyncing_layers)
|
|
return;
|
|
|
|
timeline->layers = g_list_sort (timeline->layers, (GCompareFunc)
|
|
sort_layers);
|
|
}
|
|
|
|
static void
|
|
layer_object_removed_cb (GESLayer * layer, GESClip * clip,
|
|
GESTimeline * timeline)
|
|
{
|
|
GList *trackelements, *tmp;
|
|
|
|
if (ges_clip_is_moving_from_layer (clip)) {
|
|
GST_DEBUG ("Clip %p is moving from a layer to another, not doing"
|
|
" anything on it", clip);
|
|
return;
|
|
}
|
|
|
|
GST_DEBUG ("Clip %p removed from layer %p", clip, layer);
|
|
|
|
/* Go over the clip's track element and figure out which one belongs to
|
|
* the list of tracks we control */
|
|
|
|
trackelements = ges_container_get_children (GES_CONTAINER (clip), FALSE);
|
|
for (tmp = trackelements; tmp; tmp = tmp->next) {
|
|
GESTrackElement *track_element = (GESTrackElement *) tmp->data;
|
|
GESTrack *track = ges_track_element_get_track (track_element);
|
|
|
|
if (!track)
|
|
continue;
|
|
|
|
GST_DEBUG_OBJECT (timeline, "Trying to remove TrackElement %p",
|
|
track_element);
|
|
|
|
/* FIXME Check if we should actually check that we control the
|
|
* track in the new management of TrackElement context */
|
|
LOCK_DYN (timeline);
|
|
if (G_LIKELY (g_list_find_custom (timeline->priv->priv_tracks, track,
|
|
(GCompareFunc) custom_find_track) || track == NULL)) {
|
|
GST_DEBUG ("Belongs to one of the tracks we control");
|
|
|
|
ges_track_remove_element (track, track_element);
|
|
}
|
|
UNLOCK_DYN (timeline);
|
|
}
|
|
g_signal_handlers_disconnect_by_func (clip, clip_track_element_added_cb,
|
|
timeline);
|
|
g_signal_handlers_disconnect_by_func (clip, clip_track_element_removed_cb,
|
|
timeline);
|
|
|
|
g_list_free_full (trackelements, gst_object_unref);
|
|
|
|
GST_DEBUG ("Done");
|
|
}
|
|
|
|
static void
|
|
trackelement_start_changed_cb (GESTrackElement * child,
|
|
GParamSpec * arg G_GNUC_UNUSED, GESTimeline * timeline)
|
|
{
|
|
timeline_update_duration (timeline);
|
|
}
|
|
|
|
static void
|
|
track_element_added_cb (GESTrack * track, GESTrackElement * track_element,
|
|
GESTimeline * timeline)
|
|
{
|
|
/* Auto transition should be updated before we receive the signal */
|
|
g_signal_connect_after (GES_TRACK_ELEMENT (track_element), "notify::start",
|
|
G_CALLBACK (trackelement_start_changed_cb), timeline);
|
|
}
|
|
|
|
static void
|
|
track_element_removed_cb (GESTrack * track,
|
|
GESTrackElement * track_element, GESTimeline * timeline)
|
|
{
|
|
/* Disconnect all signal handlers */
|
|
g_signal_handlers_disconnect_by_func (track_element,
|
|
trackelement_start_changed_cb, timeline);
|
|
}
|
|
|
|
static GstPadProbeReturn
|
|
_pad_probe_cb (GstPad * mixer_pad, GstPadProbeInfo * info,
|
|
GESTimeline * timeline)
|
|
{
|
|
GstEvent *event = GST_PAD_PROBE_INFO_EVENT (info);
|
|
if (GST_EVENT_TYPE (event) == GST_EVENT_STREAM_START) {
|
|
LOCK_DYN (timeline);
|
|
if (timeline->priv->stream_start_group_id == -1) {
|
|
if (!gst_event_parse_group_id (event,
|
|
&timeline->priv->stream_start_group_id))
|
|
timeline->priv->stream_start_group_id = gst_util_group_id_next ();
|
|
}
|
|
|
|
info->data = gst_event_make_writable (event);
|
|
gst_event_set_group_id (GST_PAD_PROBE_INFO_EVENT (info),
|
|
timeline->priv->stream_start_group_id);
|
|
UNLOCK_DYN (timeline);
|
|
|
|
return GST_PAD_PROBE_REMOVE;
|
|
}
|
|
|
|
return GST_PAD_PROBE_OK;
|
|
}
|
|
|
|
static void
|
|
_ghost_track_srcpad (TrackPrivate * tr_priv)
|
|
{
|
|
GstPad *pad;
|
|
gchar *padname;
|
|
gboolean no_more;
|
|
GList *tmp;
|
|
GESTrack *track = tr_priv->track;
|
|
|
|
pad = gst_element_get_static_pad (GST_ELEMENT (track), "src");
|
|
|
|
GST_DEBUG ("track:%p, pad:%s:%s", track, GST_DEBUG_PAD_NAME (pad));
|
|
|
|
/* Remember the pad */
|
|
LOCK_DYN (tr_priv->timeline);
|
|
GST_OBJECT_LOCK (track);
|
|
tr_priv->pad = pad;
|
|
|
|
no_more = TRUE;
|
|
for (tmp = tr_priv->timeline->priv->priv_tracks; tmp; tmp = g_list_next (tmp)) {
|
|
TrackPrivate *tr_priv = (TrackPrivate *) tmp->data;
|
|
|
|
if (!tr_priv->pad) {
|
|
GST_LOG ("Found track without pad %p", tr_priv->track);
|
|
no_more = FALSE;
|
|
}
|
|
}
|
|
GST_OBJECT_UNLOCK (track);
|
|
|
|
/* ghost it ! */
|
|
GST_DEBUG ("Ghosting pad and adding it to ourself");
|
|
padname = g_strdup_printf ("track_%p_src", track);
|
|
tr_priv->ghostpad = gst_ghost_pad_new (padname, pad);
|
|
g_free (padname);
|
|
gst_pad_set_active (tr_priv->ghostpad, TRUE);
|
|
gst_element_add_pad (GST_ELEMENT (tr_priv->timeline), tr_priv->ghostpad);
|
|
|
|
if (no_more) {
|
|
GST_DEBUG ("Signaling no-more-pads");
|
|
gst_element_no_more_pads (GST_ELEMENT (tr_priv->timeline));
|
|
}
|
|
|
|
tr_priv->probe_id = gst_pad_add_probe (pad,
|
|
GST_PAD_PROBE_TYPE_EVENT_DOWNSTREAM,
|
|
(GstPadProbeCallback) _pad_probe_cb, tr_priv->timeline, NULL);
|
|
|
|
UNLOCK_DYN (tr_priv->timeline);
|
|
}
|
|
|
|
gboolean
|
|
timeline_add_element (GESTimeline * timeline, GESTimelineElement * element)
|
|
{
|
|
GESTimelineElement *same_name =
|
|
g_hash_table_lookup (timeline->priv->all_elements,
|
|
element->name);
|
|
|
|
GST_DEBUG_OBJECT (timeline, "Adding element: %s", element->name);
|
|
if (same_name) {
|
|
GST_ERROR_OBJECT (timeline, "%s Already in the timeline %" GST_PTR_FORMAT,
|
|
element->name, same_name);
|
|
return FALSE;
|
|
}
|
|
|
|
g_hash_table_insert (timeline->priv->all_elements,
|
|
ges_timeline_element_get_name (element), gst_object_ref (element));
|
|
|
|
timeline_tree_track_element (timeline->priv->tree, element);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
gboolean
|
|
timeline_remove_element (GESTimeline * timeline, GESTimelineElement * element)
|
|
{
|
|
if (g_hash_table_remove (timeline->priv->all_elements, element->name)) {
|
|
timeline_tree_stop_tracking_element (timeline->priv->tree, element);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
void
|
|
timeline_fill_gaps (GESTimeline * timeline)
|
|
{
|
|
GList *tmp;
|
|
|
|
for (tmp = timeline->tracks; tmp; tmp = tmp->next) {
|
|
track_resort_and_fill_gaps (tmp->data);
|
|
}
|
|
}
|
|
|
|
GNode *
|
|
timeline_get_tree (GESTimeline * timeline)
|
|
{
|
|
return timeline->priv->tree;
|
|
}
|
|
|
|
/**** API *****/
|
|
/**
|
|
* ges_timeline_new:
|
|
*
|
|
* Creates a new empty #GESTimeline.
|
|
*
|
|
* Returns: (transfer floating): The new timeline.
|
|
*/
|
|
|
|
GESTimeline *
|
|
ges_timeline_new (void)
|
|
{
|
|
GESProject *project = ges_project_new (NULL);
|
|
GESExtractable *timeline = g_object_new (GES_TYPE_TIMELINE, NULL);
|
|
|
|
ges_extractable_set_asset (timeline, GES_ASSET (project));
|
|
gst_object_unref (project);
|
|
|
|
return GES_TIMELINE (timeline);
|
|
}
|
|
|
|
/**
|
|
* ges_timeline_new_from_uri:
|
|
* @uri: the URI to load from
|
|
* @error: (out) (allow-none): An error to be set in case something wrong happens or %NULL
|
|
*
|
|
* Creates a timeline from the given URI.
|
|
*
|
|
* Returns: (transfer floating) (nullable): A new timeline if the uri was loaded
|
|
* successfully, or %NULL if the uri could not be loaded.
|
|
*/
|
|
GESTimeline *
|
|
ges_timeline_new_from_uri (const gchar * uri, GError ** error)
|
|
{
|
|
GESTimeline *ret;
|
|
GESProject *project = ges_project_new (uri);
|
|
|
|
ret = GES_TIMELINE (ges_asset_extract (GES_ASSET (project), error));
|
|
gst_object_unref (project);
|
|
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* ges_timeline_load_from_uri:
|
|
* @timeline: an empty #GESTimeline into which to load the formatter
|
|
* @uri: The URI to load from
|
|
* @error: (out) (allow-none): An error to be set in case something wrong happens or %NULL
|
|
*
|
|
* Loads the contents of URI into the given timeline.
|
|
*
|
|
* Returns: %TRUE if the timeline was loaded successfully, or %FALSE if the uri
|
|
* could not be loaded.
|
|
*/
|
|
gboolean
|
|
ges_timeline_load_from_uri (GESTimeline * timeline, const gchar * uri,
|
|
GError ** error)
|
|
{
|
|
GESProject *project;
|
|
gboolean ret = FALSE;
|
|
|
|
g_return_val_if_fail (GES_IS_TIMELINE (timeline), FALSE);
|
|
g_return_val_if_fail ((ges_extractable_get_asset (GES_EXTRACTABLE
|
|
(timeline)) == NULL), FALSE);
|
|
|
|
project = ges_project_new (uri);
|
|
ret = ges_project_load (project, timeline, error);
|
|
gst_object_unref (project);
|
|
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* ges_timeline_save_to_uri:
|
|
* @timeline: a #GESTimeline
|
|
* @uri: The location to save to
|
|
* @formatter_asset: (allow-none): The formatter asset to use or %NULL. If %NULL,
|
|
* will try to save in the same format as the one from which the timeline as been loaded
|
|
* or default to the formatter with highest rank
|
|
* @overwrite: %TRUE to overwrite file if it exists
|
|
* @error: (out) (allow-none): An error to be set in case something wrong happens or %NULL
|
|
*
|
|
* Saves the timeline to the given location
|
|
*
|
|
* Returns: %TRUE if the timeline was successfully saved to the given location,
|
|
* else %FALSE.
|
|
*/
|
|
gboolean
|
|
ges_timeline_save_to_uri (GESTimeline * timeline, const gchar * uri,
|
|
GESAsset * formatter_asset, gboolean overwrite, GError ** error)
|
|
{
|
|
GESProject *project;
|
|
|
|
gboolean ret, created_proj = FALSE;
|
|
|
|
g_return_val_if_fail (GES_IS_TIMELINE (timeline), FALSE);
|
|
project =
|
|
GES_PROJECT (ges_extractable_get_asset (GES_EXTRACTABLE (timeline)));
|
|
|
|
if (project == NULL) {
|
|
project = ges_project_new (NULL);
|
|
created_proj = TRUE;
|
|
}
|
|
|
|
ret = ges_project_save (project, timeline, uri, formatter_asset, overwrite,
|
|
error);
|
|
|
|
if (created_proj)
|
|
gst_object_unref (project);
|
|
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* ges_timeline_get_groups:
|
|
* @timeline: a #GESTimeline
|
|
*
|
|
* Get the list of #GESGroup present in the Timeline.
|
|
*
|
|
* Returns: (transfer none) (element-type GESGroup): the list of
|
|
* #GESGroup that contain clips present in the timeline's layers.
|
|
* Must not be changed.
|
|
*/
|
|
GList *
|
|
ges_timeline_get_groups (GESTimeline * timeline)
|
|
{
|
|
g_return_val_if_fail (GES_IS_TIMELINE (timeline), NULL);
|
|
CHECK_THREAD (timeline);
|
|
|
|
return timeline->priv->groups;
|
|
}
|
|
|
|
/**
|
|
* ges_timeline_append_layer:
|
|
* @timeline: a #GESTimeline
|
|
*
|
|
* Append a newly created #GESLayer to @timeline
|
|
* Note that you do not own any reference to the returned layer.
|
|
*
|
|
* Returns: (transfer none): The newly created #GESLayer, or the last (empty)
|
|
* #GESLayer of @timeline.
|
|
*/
|
|
GESLayer *
|
|
ges_timeline_append_layer (GESTimeline * timeline)
|
|
{
|
|
guint32 priority;
|
|
GESLayer *layer;
|
|
|
|
g_return_val_if_fail (GES_IS_TIMELINE (timeline), NULL);
|
|
CHECK_THREAD (timeline);
|
|
|
|
layer = ges_layer_new ();
|
|
priority = g_list_length (timeline->layers);
|
|
ges_layer_set_priority (layer, priority);
|
|
|
|
ges_timeline_add_layer (timeline, layer);
|
|
|
|
return layer;
|
|
}
|
|
|
|
/**
|
|
* ges_timeline_add_layer:
|
|
* @timeline: a #GESTimeline
|
|
* @layer: (transfer floating): the #GESLayer to add
|
|
*
|
|
* Add the layer to the timeline. The reference to the @layer will be stolen
|
|
* by the @timeline.
|
|
*
|
|
* Returns: %TRUE if the layer was properly added, else %FALSE.
|
|
*/
|
|
gboolean
|
|
ges_timeline_add_layer (GESTimeline * timeline, GESLayer * layer)
|
|
{
|
|
gboolean auto_transition;
|
|
GList *objects, *tmp;
|
|
|
|
g_return_val_if_fail (GES_IS_TIMELINE (timeline), FALSE);
|
|
g_return_val_if_fail (GES_IS_LAYER (layer), FALSE);
|
|
CHECK_THREAD (timeline);
|
|
|
|
GST_DEBUG ("timeline:%p, layer:%p", timeline, layer);
|
|
|
|
/* We can only add a layer that doesn't already belong to another timeline */
|
|
if (G_UNLIKELY (layer->timeline)) {
|
|
GST_WARNING ("Layer belongs to another timeline, can't add it");
|
|
gst_object_ref_sink (layer);
|
|
gst_object_unref (layer);
|
|
return FALSE;
|
|
}
|
|
|
|
/* Add to the list of layers, make sure we don't already control it */
|
|
if (G_UNLIKELY (g_list_find (timeline->layers, (gconstpointer) layer))) {
|
|
GST_WARNING ("Layer is already controlled by this timeline");
|
|
gst_object_ref_sink (layer);
|
|
gst_object_unref (layer);
|
|
return FALSE;
|
|
}
|
|
|
|
auto_transition = ges_layer_get_auto_transition (layer);
|
|
|
|
/* If the user doesn't explicitely set layer auto_transition, then set our */
|
|
if (!auto_transition) {
|
|
auto_transition = ges_timeline_get_auto_transition (timeline);
|
|
ges_layer_set_auto_transition (layer, auto_transition);
|
|
}
|
|
|
|
gst_object_ref_sink (layer);
|
|
timeline->layers = g_list_insert_sorted (timeline->layers, layer,
|
|
(GCompareFunc) sort_layers);
|
|
|
|
/* Inform the layer that it belongs to a new timeline */
|
|
ges_layer_set_timeline (layer, timeline);
|
|
|
|
/* Connect to 'clip-added'/'clip-removed' signal from the new layer */
|
|
g_signal_connect_after (layer, "clip-added",
|
|
G_CALLBACK (layer_object_added_cb), timeline);
|
|
g_signal_connect_after (layer, "clip-removed",
|
|
G_CALLBACK (layer_object_removed_cb), timeline);
|
|
g_signal_connect (layer, "notify::priority",
|
|
G_CALLBACK (layer_priority_changed_cb), timeline);
|
|
g_signal_connect (layer, "notify::auto-transition",
|
|
G_CALLBACK (layer_auto_transition_changed_cb), timeline);
|
|
|
|
GST_DEBUG ("Done adding layer, emitting 'layer-added' signal");
|
|
g_signal_emit (timeline, ges_timeline_signals[LAYER_ADDED], 0, layer);
|
|
|
|
/* add any existing clips to the timeline */
|
|
objects = ges_layer_get_clips (layer);
|
|
for (tmp = objects; tmp; tmp = tmp->next) {
|
|
layer_object_added_cb (layer, tmp->data, timeline);
|
|
gst_object_unref (tmp->data);
|
|
tmp->data = NULL;
|
|
}
|
|
g_list_free (objects);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
/**
|
|
* ges_timeline_remove_layer:
|
|
* @timeline: a #GESTimeline
|
|
* @layer: the #GESLayer to remove
|
|
*
|
|
* Removes the layer from the timeline. The reference that the @timeline holds on
|
|
* the layer will be dropped. If you wish to use the @layer after calling this
|
|
* method, you need to take a reference before calling.
|
|
*
|
|
* Returns: %TRUE if the layer was properly removed, else %FALSE.
|
|
*/
|
|
|
|
gboolean
|
|
ges_timeline_remove_layer (GESTimeline * timeline, GESLayer * layer)
|
|
{
|
|
GList *layer_objects, *tmp;
|
|
|
|
g_return_val_if_fail (GES_IS_TIMELINE (timeline), FALSE);
|
|
g_return_val_if_fail (GES_IS_LAYER (layer), FALSE);
|
|
CHECK_THREAD (timeline);
|
|
|
|
GST_DEBUG ("timeline:%p, layer:%p", timeline, layer);
|
|
|
|
if (G_UNLIKELY (!g_list_find (timeline->layers, layer))) {
|
|
GST_WARNING ("Layer doesn't belong to this timeline");
|
|
return FALSE;
|
|
}
|
|
|
|
/* remove objects from any private data structures */
|
|
|
|
layer_objects = ges_layer_get_clips (layer);
|
|
for (tmp = layer_objects; tmp; tmp = tmp->next) {
|
|
layer_object_removed_cb (layer, GES_CLIP (tmp->data), timeline);
|
|
gst_object_unref (G_OBJECT (tmp->data));
|
|
tmp->data = NULL;
|
|
}
|
|
g_list_free (layer_objects);
|
|
|
|
/* Disconnect signals */
|
|
GST_DEBUG ("Disconnecting signal callbacks");
|
|
g_signal_handlers_disconnect_by_func (layer, layer_object_added_cb, timeline);
|
|
g_signal_handlers_disconnect_by_func (layer, layer_object_removed_cb,
|
|
timeline);
|
|
g_signal_handlers_disconnect_by_func (layer, layer_priority_changed_cb,
|
|
timeline);
|
|
g_signal_handlers_disconnect_by_func (layer,
|
|
layer_auto_transition_changed_cb, timeline);
|
|
|
|
timeline->layers = g_list_remove (timeline->layers, layer);
|
|
ges_layer_set_timeline (layer, NULL);
|
|
|
|
g_signal_emit (timeline, ges_timeline_signals[LAYER_REMOVED], 0, layer);
|
|
|
|
gst_object_unref (layer);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
/**
|
|
* ges_timeline_add_track:
|
|
* @timeline: a #GESTimeline
|
|
* @track: (transfer full): the #GESTrack to add
|
|
*
|
|
* Add a track to the timeline. The reference to the track will be stolen by the
|
|
* pipeline.
|
|
*
|
|
* Returns: %TRUE if the track was properly added, else %FALSE.
|
|
*/
|
|
|
|
/* FIXME: create track elements for clips which have already been
|
|
* added to existing layers.
|
|
*/
|
|
|
|
gboolean
|
|
ges_timeline_add_track (GESTimeline * timeline, GESTrack * track)
|
|
{
|
|
TrackPrivate *tr_priv;
|
|
GList *tmp;
|
|
|
|
g_return_val_if_fail (GES_IS_TIMELINE (timeline), FALSE);
|
|
g_return_val_if_fail (GES_IS_TRACK (track), FALSE);
|
|
CHECK_THREAD (timeline);
|
|
|
|
GST_DEBUG ("timeline:%p, track:%p", timeline, track);
|
|
|
|
/* make sure we don't already control it */
|
|
if (G_UNLIKELY (g_list_find (timeline->tracks, (gconstpointer) track))) {
|
|
GST_WARNING ("Track is already controlled by this timeline");
|
|
return FALSE;
|
|
}
|
|
|
|
/* Add the track to ourself (as a GstBin)
|
|
* Reference is stolen ! */
|
|
if (G_UNLIKELY (!gst_bin_add (GST_BIN (timeline), GST_ELEMENT (track)))) {
|
|
GST_WARNING ("Couldn't add track to ourself (GST)");
|
|
return FALSE;
|
|
}
|
|
|
|
tr_priv = g_new0 (TrackPrivate, 1);
|
|
tr_priv->timeline = timeline;
|
|
tr_priv->track = track;
|
|
|
|
/* Add the track to the list of tracks we track */
|
|
LOCK_DYN (timeline);
|
|
timeline->priv->priv_tracks = g_list_append (timeline->priv->priv_tracks,
|
|
tr_priv);
|
|
UNLOCK_DYN (timeline);
|
|
timeline->tracks = g_list_append (timeline->tracks, track);
|
|
|
|
/* Inform the track that it's currently being used by ourself */
|
|
ges_track_set_timeline (track, timeline);
|
|
|
|
GST_DEBUG ("Done adding track, emitting 'track-added' signal");
|
|
|
|
_ghost_track_srcpad (tr_priv);
|
|
|
|
/* emit 'track-added' */
|
|
g_signal_emit (timeline, ges_timeline_signals[TRACK_ADDED], 0, track);
|
|
|
|
/* ensure that each existing clip has the opportunity to create a
|
|
* track element for this track*/
|
|
|
|
/* We connect to the object for the timeline editing mode management */
|
|
g_signal_connect (G_OBJECT (track), "track-element-added",
|
|
G_CALLBACK (track_element_added_cb), timeline);
|
|
g_signal_connect (G_OBJECT (track), "track-element-removed",
|
|
G_CALLBACK (track_element_removed_cb), timeline);
|
|
|
|
for (tmp = timeline->layers; tmp; tmp = tmp->next) {
|
|
GList *objects, *obj;
|
|
objects = ges_layer_get_clips (tmp->data);
|
|
|
|
for (obj = objects; obj; obj = obj->next) {
|
|
GESClip *clip = obj->data;
|
|
|
|
add_object_to_tracks (timeline, clip, track);
|
|
gst_object_unref (clip);
|
|
}
|
|
g_list_free (objects);
|
|
}
|
|
|
|
/* FIXME Check if we should rollback if we can't sync state */
|
|
gst_element_sync_state_with_parent (GST_ELEMENT (track));
|
|
g_object_set (track, "message-forward", TRUE, NULL);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
/**
|
|
* ges_timeline_remove_track:
|
|
* @timeline: a #GESTimeline
|
|
* @track: the #GESTrack to remove
|
|
*
|
|
* Remove the @track from the @timeline. The reference stolen when adding the
|
|
* @track will be removed. If you wish to use the @track after calling this
|
|
* function you must ensure that you have a reference to it.
|
|
*
|
|
* Returns: %TRUE if the @track was properly removed, else %FALSE.
|
|
*/
|
|
|
|
/* FIXME: release any track elements associated with this layer. currenly this
|
|
* will not happen if you remove the track before removing *all*
|
|
* clips which have a track element in this track.
|
|
*/
|
|
|
|
gboolean
|
|
ges_timeline_remove_track (GESTimeline * timeline, GESTrack * track)
|
|
{
|
|
GList *tmp;
|
|
TrackPrivate *tr_priv;
|
|
GESTimelinePrivate *priv;
|
|
|
|
g_return_val_if_fail (GES_IS_TRACK (track), FALSE);
|
|
g_return_val_if_fail (GES_IS_TIMELINE (timeline), FALSE);
|
|
CHECK_THREAD (timeline);
|
|
|
|
GST_DEBUG ("timeline:%p, track:%p", timeline, track);
|
|
|
|
priv = timeline->priv;
|
|
LOCK_DYN (timeline);
|
|
if (G_UNLIKELY (!(tmp = g_list_find_custom (priv->priv_tracks,
|
|
track, (GCompareFunc) custom_find_track)))) {
|
|
GST_WARNING ("Track doesn't belong to this timeline");
|
|
UNLOCK_DYN (timeline);
|
|
return FALSE;
|
|
}
|
|
|
|
tr_priv = tmp->data;
|
|
gst_object_unref (tr_priv->pad);
|
|
priv->priv_tracks = g_list_remove (priv->priv_tracks, tr_priv);
|
|
UNLOCK_DYN (timeline);
|
|
timeline->tracks = g_list_remove (timeline->tracks, track);
|
|
|
|
ges_track_set_timeline (track, NULL);
|
|
|
|
/* Remove ghost pad */
|
|
if (tr_priv->ghostpad) {
|
|
GST_DEBUG ("Removing ghostpad");
|
|
gst_pad_set_active (tr_priv->ghostpad, FALSE);
|
|
gst_ghost_pad_set_target ((GstGhostPad *) tr_priv->ghostpad, NULL);
|
|
gst_element_remove_pad (GST_ELEMENT (timeline), tr_priv->ghostpad);
|
|
}
|
|
|
|
/* Remove pad-added/-removed handlers */
|
|
g_signal_handlers_disconnect_by_func (track, track_element_added_cb,
|
|
timeline);
|
|
g_signal_handlers_disconnect_by_func (track, track_element_removed_cb,
|
|
timeline);
|
|
|
|
/* Signal track removal to all layers/objects */
|
|
g_signal_emit (timeline, ges_timeline_signals[TRACK_REMOVED], 0, track);
|
|
|
|
/* remove track from our bin */
|
|
gst_object_ref (track);
|
|
if (G_UNLIKELY (!gst_bin_remove (GST_BIN (timeline), GST_ELEMENT (track)))) {
|
|
GST_WARNING ("Couldn't remove track to ourself (GST)");
|
|
gst_object_unref (track);
|
|
return FALSE;
|
|
}
|
|
|
|
/* set track state to NULL */
|
|
gst_element_set_state (GST_ELEMENT (track), GST_STATE_NULL);
|
|
|
|
gst_object_unref (track);
|
|
|
|
g_free (tr_priv);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
/**
|
|
* ges_timeline_get_track_for_pad:
|
|
* @timeline: The #GESTimeline
|
|
* @pad: The #GstPad
|
|
*
|
|
* Search the #GESTrack corresponding to the given @timeline's @pad.
|
|
*
|
|
* Returns: (transfer none) (nullable): The corresponding #GESTrack if it is
|
|
* found, or %NULL if there is an error.
|
|
*/
|
|
|
|
GESTrack *
|
|
ges_timeline_get_track_for_pad (GESTimeline * timeline, GstPad * pad)
|
|
{
|
|
GList *tmp;
|
|
|
|
g_return_val_if_fail (GES_IS_TIMELINE (timeline), NULL);
|
|
|
|
LOCK_DYN (timeline);
|
|
for (tmp = timeline->priv->priv_tracks; tmp; tmp = g_list_next (tmp)) {
|
|
TrackPrivate *tr_priv = (TrackPrivate *) tmp->data;
|
|
if (pad == tr_priv->ghostpad) {
|
|
UNLOCK_DYN (timeline);
|
|
return tr_priv->track;
|
|
}
|
|
}
|
|
UNLOCK_DYN (timeline);
|
|
|
|
return NULL;
|
|
}
|
|
|
|
/**
|
|
* ges_timeline_get_pad_for_track:
|
|
* @timeline: The #GESTimeline
|
|
* @track: The #GESTrack
|
|
*
|
|
* Search the #GstPad corresponding to the given @timeline's @track.
|
|
*
|
|
* Returns: (transfer none) (nullable): The corresponding #GstPad if it is
|
|
* found, or %NULL if there is an error.
|
|
*/
|
|
|
|
GstPad *
|
|
ges_timeline_get_pad_for_track (GESTimeline * timeline, GESTrack * track)
|
|
{
|
|
GList *tmp;
|
|
|
|
LOCK_DYN (timeline);
|
|
for (tmp = timeline->priv->priv_tracks; tmp; tmp = g_list_next (tmp)) {
|
|
TrackPrivate *tr_priv = (TrackPrivate *) tmp->data;
|
|
|
|
if (track == tr_priv->track) {
|
|
if (tr_priv->ghostpad)
|
|
gst_object_ref (tr_priv->ghostpad);
|
|
|
|
UNLOCK_DYN (timeline);
|
|
return tr_priv->ghostpad;
|
|
}
|
|
}
|
|
UNLOCK_DYN (timeline);
|
|
|
|
return NULL;
|
|
}
|
|
|
|
/**
|
|
* ges_timeline_get_tracks:
|
|
* @timeline: a #GESTimeline
|
|
*
|
|
* Returns the list of #GESTrack used by the Timeline.
|
|
*
|
|
* Returns: (transfer full) (element-type GESTrack): A list of #GESTrack.
|
|
* The caller should unref each track once he is done with them.
|
|
*/
|
|
GList *
|
|
ges_timeline_get_tracks (GESTimeline * timeline)
|
|
{
|
|
g_return_val_if_fail (GES_IS_TIMELINE (timeline), NULL);
|
|
CHECK_THREAD (timeline);
|
|
|
|
return g_list_copy_deep (timeline->tracks, (GCopyFunc) gst_object_ref, NULL);
|
|
}
|
|
|
|
/**
|
|
* ges_timeline_get_layers:
|
|
* @timeline: a #GESTimeline
|
|
*
|
|
* Get the list of #GESLayer present in the Timeline.
|
|
*
|
|
* Returns: (transfer full) (element-type GESLayer): the list of
|
|
* #GESLayer present in the Timeline sorted by priority.
|
|
* The caller should unref each Layer once he is done with them.
|
|
*/
|
|
GList *
|
|
ges_timeline_get_layers (GESTimeline * timeline)
|
|
{
|
|
GList *tmp, *res = NULL;
|
|
|
|
g_return_val_if_fail (GES_IS_TIMELINE (timeline), NULL);
|
|
CHECK_THREAD (timeline);
|
|
|
|
for (tmp = timeline->layers; tmp; tmp = g_list_next (tmp)) {
|
|
res = g_list_insert_sorted (res, gst_object_ref (tmp->data),
|
|
(GCompareFunc) sort_layers);
|
|
}
|
|
|
|
return res;
|
|
}
|
|
|
|
static void
|
|
track_commited_cb (GESTrack * track, GESTimeline * timeline)
|
|
{
|
|
gboolean emit_commited = FALSE;
|
|
GST_OBJECT_LOCK (timeline);
|
|
timeline->priv->expected_commited -= 1;
|
|
if (timeline->priv->expected_commited == 0)
|
|
emit_commited = TRUE;
|
|
g_signal_handlers_disconnect_by_func (track, track_commited_cb, timeline);
|
|
GST_OBJECT_UNLOCK (timeline);
|
|
|
|
if (emit_commited) {
|
|
g_signal_emit (timeline, ges_timeline_signals[COMMITED], 0);
|
|
}
|
|
}
|
|
|
|
/* Must be called with the timeline's DYN_LOCK */
|
|
static gboolean
|
|
ges_timeline_commit_unlocked (GESTimeline * timeline)
|
|
{
|
|
GList *tmp;
|
|
gboolean res = TRUE;
|
|
|
|
GST_DEBUG_OBJECT (timeline, "commiting changes");
|
|
|
|
timeline_tree_create_transitions (timeline->priv->tree,
|
|
ges_timeline_find_auto_transition);
|
|
for (tmp = timeline->layers; tmp; tmp = tmp->next) {
|
|
GESLayer *layer = tmp->data;
|
|
|
|
/* Ensure clip priorities are correct after an edit */
|
|
ges_layer_resync_priorities (layer);
|
|
}
|
|
|
|
timeline->priv->expected_commited =
|
|
g_list_length (timeline->priv->priv_tracks);
|
|
|
|
if (timeline->priv->expected_commited == 0) {
|
|
g_signal_emit (timeline, ges_timeline_signals[COMMITED], 0);
|
|
} else {
|
|
for (tmp = timeline->tracks; tmp; tmp = tmp->next) {
|
|
g_signal_connect (tmp->data, "commited", G_CALLBACK (track_commited_cb),
|
|
timeline);
|
|
if (!ges_track_commit (GES_TRACK (tmp->data)))
|
|
res = FALSE;
|
|
}
|
|
}
|
|
|
|
return res;
|
|
}
|
|
|
|
/**
|
|
* ges_timeline_commit:
|
|
* @timeline: a #GESTimeline
|
|
*
|
|
* Commit all the pending changes of the clips contained in the
|
|
* @timeline.
|
|
*
|
|
* When changes happen in a timeline, they are not
|
|
* directly executed in the non-linear engine. Call this method once you are
|
|
* done with a set of changes and want it to be executed.
|
|
*
|
|
* The #GESTimeline::commited signal will be emitted when the (possibly updated)
|
|
* #GstPipeline is ready to output data again, except if the state of the
|
|
* timeline was #GST_STATE_READY or #GST_STATE_NULL.
|
|
*
|
|
* Note that all the pending changes will automatically be executed when the
|
|
* timeline goes from #GST_STATE_READY to #GST_STATE_PAUSED, which usually is
|
|
* triggered by corresponding state changes in a containing #GESPipeline.
|
|
*
|
|
* You should not try to change the state of the timeline, seek it or add
|
|
* tracks to it during a commit operation, that is between a call to this
|
|
* function and after receiving the #GESTimeline::commited signal.
|
|
*
|
|
* See #ges_timeline_commit_sync if you don't want to bother with waiting
|
|
* for the signal.
|
|
*
|
|
* Returns: %TRUE if pending changes were commited or %FALSE if nothing needed
|
|
* to be commited
|
|
*/
|
|
gboolean
|
|
ges_timeline_commit (GESTimeline * timeline)
|
|
{
|
|
gboolean ret;
|
|
|
|
g_return_val_if_fail (GES_IS_TIMELINE (timeline), FALSE);
|
|
|
|
LOCK_DYN (timeline);
|
|
ret = ges_timeline_commit_unlocked (timeline);
|
|
UNLOCK_DYN (timeline);
|
|
|
|
ges_timeline_emit_snapping (timeline, NULL, NULL, GST_CLOCK_TIME_NONE);
|
|
return ret;
|
|
}
|
|
|
|
static void
|
|
commited_cb (GESTimeline * timeline)
|
|
{
|
|
g_mutex_lock (&timeline->priv->commited_lock);
|
|
g_cond_signal (&timeline->priv->commited_cond);
|
|
g_mutex_unlock (&timeline->priv->commited_lock);
|
|
}
|
|
|
|
/**
|
|
* ges_timeline_commit_sync:
|
|
* @timeline: a #GESTimeline
|
|
*
|
|
* Commit all the pending changes of the #GESClips contained in the
|
|
* @timeline.
|
|
*
|
|
* Will return once the update is complete, that is when the
|
|
* (possibly updated) #GstPipeline is ready to output data again, or if the
|
|
* state of the timeline was #GST_STATE_READY or #GST_STATE_NULL.
|
|
*
|
|
* This function will wait for any pending state change of the timeline by
|
|
* calling #gst_element_get_state with a #GST_CLOCK_TIME_NONE timeout, you
|
|
* should not try to change the state from another thread before this function
|
|
* has returned.
|
|
*
|
|
* See #ges_timeline_commit for more information.
|
|
*
|
|
* Returns: %TRUE if pending changes were commited or %FALSE if nothing needed
|
|
* to be commited
|
|
*/
|
|
gboolean
|
|
ges_timeline_commit_sync (GESTimeline * timeline)
|
|
{
|
|
gboolean ret;
|
|
gboolean wait_for_signal;
|
|
|
|
g_return_val_if_fail (GES_IS_TIMELINE (timeline), FALSE);
|
|
|
|
/* Let's make sure our state is stable */
|
|
gst_element_get_state (GST_ELEMENT (timeline), NULL, NULL,
|
|
GST_CLOCK_TIME_NONE);
|
|
|
|
/* Let's make sure no track gets added between now and the actual commiting */
|
|
LOCK_DYN (timeline);
|
|
wait_for_signal = g_list_length (timeline->priv->priv_tracks) > 0
|
|
&& GST_STATE (timeline) >= GST_STATE_PAUSED;
|
|
|
|
if (!wait_for_signal) {
|
|
ret = ges_timeline_commit_unlocked (timeline);
|
|
} else {
|
|
gulong handler_id =
|
|
g_signal_connect (timeline, "commited", (GCallback) commited_cb, NULL);
|
|
|
|
g_mutex_lock (&timeline->priv->commited_lock);
|
|
|
|
ret = ges_timeline_commit_unlocked (timeline);
|
|
g_cond_wait (&timeline->priv->commited_cond,
|
|
&timeline->priv->commited_lock);
|
|
g_mutex_unlock (&timeline->priv->commited_lock);
|
|
g_signal_handler_disconnect (timeline, handler_id);
|
|
}
|
|
|
|
UNLOCK_DYN (timeline);
|
|
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* ges_timeline_get_duration:
|
|
* @timeline: a #GESTimeline
|
|
*
|
|
* Get the current duration of @timeline
|
|
*
|
|
* Returns: The current duration of @timeline
|
|
*/
|
|
GstClockTime
|
|
ges_timeline_get_duration (GESTimeline * timeline)
|
|
{
|
|
g_return_val_if_fail (GES_IS_TIMELINE (timeline), GST_CLOCK_TIME_NONE);
|
|
CHECK_THREAD (timeline);
|
|
|
|
return timeline->priv->duration;
|
|
}
|
|
|
|
/**
|
|
* ges_timeline_get_auto_transition:
|
|
* @timeline: a #GESTimeline
|
|
*
|
|
* Gets whether transitions are automatically added when objects
|
|
* overlap or not.
|
|
*
|
|
* Returns: %TRUE if transitions are automatically added, else %FALSE.
|
|
*/
|
|
gboolean
|
|
ges_timeline_get_auto_transition (GESTimeline * timeline)
|
|
{
|
|
g_return_val_if_fail (GES_IS_TIMELINE (timeline), FALSE);
|
|
CHECK_THREAD (timeline);
|
|
|
|
return timeline->priv->auto_transition;
|
|
}
|
|
|
|
/**
|
|
* ges_timeline_set_auto_transition:
|
|
* @timeline: a #GESLayer
|
|
* @auto_transition: whether the auto_transition is active
|
|
*
|
|
* Sets the layer to the given @auto_transition. See the documentation of the
|
|
* property auto_transition for more information.
|
|
*/
|
|
void
|
|
ges_timeline_set_auto_transition (GESTimeline * timeline,
|
|
gboolean auto_transition)
|
|
{
|
|
GList *layers;
|
|
GESLayer *layer;
|
|
|
|
g_return_if_fail (GES_IS_TIMELINE (timeline));
|
|
CHECK_THREAD (timeline);
|
|
|
|
timeline->priv->auto_transition = auto_transition;
|
|
g_object_notify (G_OBJECT (timeline), "auto-transition");
|
|
|
|
layers = timeline->layers;
|
|
for (; layers; layers = layers->next) {
|
|
layer = layers->data;
|
|
ges_layer_set_auto_transition (layer, auto_transition);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* ges_timeline_get_snapping_distance:
|
|
* @timeline: a #GESTimeline
|
|
*
|
|
* Gets the configured snapping distance of the timeline. See
|
|
* the documentation of the property snapping_distance for more
|
|
* information.
|
|
*
|
|
* Returns: The @snapping_distance property of the timeline
|
|
*/
|
|
GstClockTime
|
|
ges_timeline_get_snapping_distance (GESTimeline * timeline)
|
|
{
|
|
g_return_val_if_fail (GES_IS_TIMELINE (timeline), GST_CLOCK_TIME_NONE);
|
|
CHECK_THREAD (timeline);
|
|
|
|
return timeline->priv->snapping_distance;
|
|
|
|
}
|
|
|
|
/**
|
|
* ges_timeline_set_snapping_distance:
|
|
* @timeline: a #GESLayer
|
|
* @snapping_distance: whether the snapping_distance is active
|
|
*
|
|
* Sets the @snapping_distance of the timeline. See the documentation of the
|
|
* property snapping_distance for more information.
|
|
*/
|
|
void
|
|
ges_timeline_set_snapping_distance (GESTimeline * timeline,
|
|
GstClockTime snapping_distance)
|
|
{
|
|
g_return_if_fail (GES_IS_TIMELINE (timeline));
|
|
CHECK_THREAD (timeline);
|
|
|
|
timeline->priv->snapping_distance = snapping_distance;
|
|
}
|
|
|
|
/**
|
|
* ges_timeline_get_element:
|
|
* @timeline: a #GESTimeline
|
|
*
|
|
* Gets a #GESTimelineElement contained in the timeline
|
|
*
|
|
* Returns: (transfer full) (nullable): The #GESTimelineElement or %NULL if
|
|
* not found.
|
|
*/
|
|
GESTimelineElement *
|
|
ges_timeline_get_element (GESTimeline * timeline, const gchar * name)
|
|
{
|
|
GESTimelineElement *ret;
|
|
|
|
g_return_val_if_fail (GES_IS_TIMELINE (timeline), NULL);
|
|
CHECK_THREAD (timeline);
|
|
|
|
ret = g_hash_table_lookup (timeline->priv->all_elements, name);
|
|
|
|
if (ret)
|
|
return gst_object_ref (ret);
|
|
|
|
#ifndef GST_DISABLE_GST_DEBUG
|
|
{
|
|
GList *element_names, *tmp;
|
|
element_names = g_hash_table_get_keys (timeline->priv->all_elements);
|
|
|
|
GST_INFO_OBJECT (timeline, "Does not contain element %s", name);
|
|
|
|
for (tmp = element_names; tmp; tmp = tmp->next) {
|
|
GST_DEBUG_OBJECT (timeline, "Containes: %s", (gchar *) tmp->data);
|
|
}
|
|
g_list_free (element_names);
|
|
}
|
|
#endif
|
|
|
|
return NULL;
|
|
}
|
|
|
|
/**
|
|
* ges_timeline_is_empty:
|
|
* @timeline: a #GESTimeline
|
|
*
|
|
* Check whether a #GESTimeline is empty or not
|
|
*
|
|
* Returns: %TRUE if the timeline is empty %FALSE otherwize
|
|
*/
|
|
gboolean
|
|
ges_timeline_is_empty (GESTimeline * timeline)
|
|
{
|
|
GHashTableIter iter;
|
|
gpointer key, value;
|
|
|
|
g_return_val_if_fail (GES_IS_TIMELINE (timeline), FALSE);
|
|
CHECK_THREAD (timeline);
|
|
|
|
if (g_hash_table_size (timeline->priv->all_elements) == 0)
|
|
return TRUE;
|
|
|
|
g_hash_table_iter_init (&iter, timeline->priv->all_elements);
|
|
while (g_hash_table_iter_next (&iter, &key, &value)) {
|
|
if (GES_IS_SOURCE (value) &&
|
|
ges_track_element_is_active (GES_TRACK_ELEMENT (value)))
|
|
return FALSE;
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
/**
|
|
* ges_timeline_get_layer:
|
|
* @timeline: The #GESTimeline to retrive a layer from
|
|
* @priority: The priority of the layer to find
|
|
*
|
|
* Retrieve the layer with @priority as a priority
|
|
*
|
|
* Returns: (transfer full) (nullable): A #GESLayer or %NULL if no layer with
|
|
* @priority was found
|
|
*
|
|
* Since 1.6
|
|
*/
|
|
GESLayer *
|
|
ges_timeline_get_layer (GESTimeline * timeline, guint priority)
|
|
{
|
|
GList *tmp;
|
|
GESLayer *layer = NULL;
|
|
|
|
g_return_val_if_fail (GES_IS_TIMELINE (timeline), NULL);
|
|
CHECK_THREAD (timeline);
|
|
|
|
for (tmp = timeline->layers; tmp; tmp = tmp->next) {
|
|
GESLayer *tmp_layer = GES_LAYER (tmp->data);
|
|
guint tmp_priority;
|
|
|
|
g_object_get (tmp_layer, "priority", &tmp_priority, NULL);
|
|
if (tmp_priority == priority) {
|
|
layer = gst_object_ref (tmp_layer);
|
|
break;
|
|
}
|
|
}
|
|
|
|
return layer;
|
|
}
|
|
|
|
/**
|
|
* ges_timeline_paste_element:
|
|
* @timeline: The #GESTimeline onto which the #GESTimelineElement should be pasted
|
|
* @element: The #GESTimelineElement to paste
|
|
* @position: The position in the timeline the element should
|
|
* be pasted to, meaning it will become the start of @element
|
|
* @layer_priority: The #GESLayer to which the element should be pasted to.
|
|
* -1 means paste to the same layer from which the @element has been copied from.
|
|
*
|
|
* Paste @element inside the timeline. @element must have been
|
|
* created using ges_timeline_element_copy with deep=TRUE set,
|
|
* i.e. it must be a deep copy, otherwise it will fail.
|
|
*
|
|
* Returns: (transfer none): Shallow copy of the @element pasted
|
|
*/
|
|
GESTimelineElement *
|
|
ges_timeline_paste_element (GESTimeline * timeline,
|
|
GESTimelineElement * element, GstClockTime position, gint layer_priority)
|
|
{
|
|
GESTimelineElement *res, *copied_from;
|
|
GESTimelineElementClass *element_class;
|
|
|
|
g_return_val_if_fail (GES_IS_TIMELINE (timeline), FALSE);
|
|
g_return_val_if_fail (GES_IS_TIMELINE_ELEMENT (element), FALSE);
|
|
CHECK_THREAD (timeline);
|
|
|
|
element_class = GES_TIMELINE_ELEMENT_GET_CLASS (element);
|
|
copied_from = ges_timeline_element_get_copied_from (element);
|
|
|
|
if (!copied_from) {
|
|
GST_ERROR_OBJECT (element, "Is not being 'deeply' copied!");
|
|
|
|
return NULL;
|
|
}
|
|
|
|
if (!element_class->paste) {
|
|
GST_ERROR_OBJECT (element, "No paste vmethod implemented");
|
|
|
|
return NULL;
|
|
}
|
|
|
|
/*
|
|
* Currently the API only supports pasting onto the same layer from which
|
|
* the @element has been copied from, i.e., @layer_priority needs to be -1.
|
|
*/
|
|
if (layer_priority != -1) {
|
|
GST_WARNING_OBJECT (timeline,
|
|
"Only -1 value for layer priority is supported");
|
|
}
|
|
|
|
res = element_class->paste (element, copied_from, position);
|
|
|
|
g_clear_object (&copied_from);
|
|
|
|
return g_object_ref (res);
|
|
}
|
|
|
|
/**
|
|
* ges_timeline_move_layer:
|
|
* @timeline: The timeline in which @layer must be
|
|
* @layer: The layer to move at @new_layer_priority
|
|
* @new_layer_priority: The index at which @layer should land
|
|
*
|
|
* Moves @layer at @new_layer_priority meaning that @layer
|
|
* we land at that position in the stack of layers inside
|
|
* the timeline. If @new_layer_priority is superior than the number
|
|
* of layers present in the time, it will move to the end of the
|
|
* stack of layers.
|
|
*/
|
|
gboolean
|
|
ges_timeline_move_layer (GESTimeline * timeline, GESLayer * layer,
|
|
guint new_layer_priority)
|
|
{
|
|
gint current_priority;
|
|
|
|
g_return_val_if_fail (GES_IS_TIMELINE (timeline), FALSE);
|
|
g_return_val_if_fail (GES_IS_LAYER (layer), FALSE);
|
|
g_return_val_if_fail (ges_layer_get_timeline (layer) == timeline, FALSE);
|
|
CHECK_THREAD (timeline);
|
|
|
|
current_priority = ges_layer_get_priority (layer);
|
|
|
|
if (new_layer_priority == current_priority) {
|
|
GST_DEBUG_OBJECT (timeline,
|
|
"Nothing to do for %" GST_PTR_FORMAT ", same priorities", layer);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
timeline->layers = g_list_remove (timeline->layers, layer);
|
|
timeline->layers = g_list_insert (timeline->layers, layer,
|
|
(gint) new_layer_priority);
|
|
|
|
_resync_layers (timeline);
|
|
|
|
return TRUE;
|
|
}
|