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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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fe854bba69
Technically, an element can still be floating on the return from `->paste` (e.g. a clip not in a layer). Since the return of the `_paste` methods are (return full) a non-floating object is probably expected in all cases.
3134 lines
96 KiB
C
3134 lines
96 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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* A timeline is composed of a set of #GESTrack-s and a set of
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* #GESLayer-s, which are added to the timeline using
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* ges_timeline_add_track() and ges_timeline_append_layer(), respectively.
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*
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* The contained tracks define the supported types of the timeline
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* and provide the media output. Essentially, each track provides an
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* additional source #GstPad.
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*
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* Most usage of a timeline will likely only need a single #GESAudioTrack
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* and/or a single #GESVideoTrack. You can create such a timeline with
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* ges_timeline_new_audio_video(). After this, you are unlikely to need to
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* work with the tracks directly.
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*
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* A timeline's layers contain #GESClip-s, which in turn control the
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* creation of #GESTrackElement-s, which are added to the timeline's
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* tracks. See #GESTimeline::select-tracks-for-object if you wish to have
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* more control over which track a clip's elements are added to.
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*
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* The layers are ordered, with higher priority layers having their
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* content prioritised in the tracks. This ordering can be changed using
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* ges_timeline_move_layer().
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*
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* ## Saving
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*
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* To save/load a timeline, you can use the ges_timeline_load_from_uri()
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* and ges_timeline_save_to_uri() methods that use the default format.
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*
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* ## Editing
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*
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* If you change the timing or ordering of a timeline's
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* #GESTimelineElement-s, then these changes will not actually be taken
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* into account in the timeline until the ges_timeline_commit() method is
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* called. This allows you to move its elements around, say, in
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* response to an end user's mouse dragging, with little expense before
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* finalising their effect.
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*
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* ## Playing
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*
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* A timeline is a #GstBin with a source #GstPad for each of its
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* tracks, which you can fetch with ges_timeline_get_pad_for_track(). You
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* will likely want to link these to some compatible sink #GstElement-s to
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* be able to play or capture the content of the timeline.
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*
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* You can use a #GESPipeline to easily preview/play the timeline's
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* content, or render it to a file.
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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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GESTrack *auto_transition_track;
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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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gboolean track_elements_moving;
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gboolean track_selection_error;
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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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GstStreamCollection *stream_collection;
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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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GstStream *stream;
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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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LOCK_DYN (tl);
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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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UNLOCK_DYN (tl);
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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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gst_object_unref (priv->stream_collection);
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gst_clear_object (&priv->auto_transition_track);
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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_ASYNC_START) {
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GST_INFO_OBJECT (timeline, "Dropping %" GST_PTR_FORMAT, message);
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return;
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}
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if (GST_MESSAGE_TYPE (message) == GST_MESSAGE_ASYNC_DONE) {
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GST_INFO_OBJECT (timeline, "Dropping %" GST_PTR_FORMAT, message);
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return;
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}
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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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LOCK_DYN (timeline);
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timeline->priv->expected_async_done = g_list_length (timeline->tracks);
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UNLOCK_DYN (timeline);
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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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return;
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}
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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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|
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static GstStateChangeReturn
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ges_timeline_change_state (GstElement * element, GstStateChange transition)
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{
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GstStateChangeReturn res;
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GESTimeline *timeline = GES_TIMELINE (element);
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res = GST_ELEMENT_CLASS (ges_timeline_parent_class)->change_state (element,
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transition);
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if (transition == GST_STATE_CHANGE_READY_TO_PAUSED)
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gst_element_post_message ((GstElement *) timeline,
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gst_message_new_stream_collection ((GstObject *) timeline,
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timeline->priv->stream_collection));
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return res;
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}
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|
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static gboolean
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ges_timeline_send_event (GstElement * element, GstEvent * event)
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{
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GESTimeline *timeline = GES_TIMELINE (element);
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|
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if (GST_EVENT_TYPE (event) == GST_EVENT_SELECT_STREAMS) {
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GList *stream_ids = NULL, *tmp, *to_remove =
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ges_timeline_get_tracks (timeline);
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|
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gst_event_parse_select_streams (event, &stream_ids);
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for (tmp = stream_ids; tmp; tmp = tmp->next) {
|
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GList *trackit;
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gchar *stream_id = tmp->data;
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|
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LOCK_DYN (timeline);
|
|
for (trackit = timeline->priv->priv_tracks; trackit;
|
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trackit = trackit->next) {
|
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TrackPrivate *tr_priv = trackit->data;
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|
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if (!g_strcmp0 (gst_stream_get_stream_id (tr_priv->stream), stream_id)) {
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to_remove = g_list_remove (to_remove, tr_priv->track);
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}
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}
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UNLOCK_DYN (timeline);
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}
|
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for (tmp = to_remove; tmp; tmp = tmp->next) {
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GST_INFO_OBJECT (timeline, "Removed unselected track: %" GST_PTR_FORMAT,
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tmp->data);
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ges_timeline_remove_track (timeline, tmp->data);
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}
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|
|
g_list_free_full (stream_ids, g_free);
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|
g_list_free (to_remove);
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|
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return TRUE;
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}
|
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|
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return GST_ELEMENT_CLASS (ges_timeline_parent_class)->send_event (element,
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event);
|
|
}
|
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|
|
/* we collect the first result */
|
|
static gboolean
|
|
_gst_array_accumulator (GSignalInvocationHint * ihint,
|
|
GValue * return_accu, const GValue * handler_return, gpointer dummy)
|
|
{
|
|
gpointer array;
|
|
|
|
array = g_value_get_boxed (handler_return);
|
|
if (!(ihint->run_type & G_SIGNAL_RUN_CLEANUP))
|
|
g_value_set_boxed (return_accu, array);
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
static void
|
|
ges_timeline_class_init (GESTimelineClass * klass)
|
|
{
|
|
GObjectClass *object_class = G_OBJECT_CLASS (klass);
|
|
GstElementClass *element_class = (GstElementClass *) klass;
|
|
GstBinClass *bin_class = GST_BIN_CLASS (klass);
|
|
|
|
GST_DEBUG_CATEGORY_INIT (ges_timeline_debug, "gestimeline",
|
|
GST_DEBUG_FG_YELLOW, "ges timeline");
|
|
timeline_tree_init_debug ();
|
|
|
|
parent_class = g_type_class_peek_parent (klass);
|
|
|
|
object_class->get_property = ges_timeline_get_property;
|
|
object_class->set_property = ges_timeline_set_property;
|
|
object_class->dispose = ges_timeline_dispose;
|
|
object_class->finalize = ges_timeline_finalize;
|
|
|
|
element_class->change_state = GST_DEBUG_FUNCPTR (ges_timeline_change_state);
|
|
element_class->send_event = GST_DEBUG_FUNCPTR (ges_timeline_send_event);
|
|
|
|
bin_class->handle_message = GST_DEBUG_FUNCPTR (ges_timeline_handle_message);
|
|
|
|
/**
|
|
* GESTimeline:duration:
|
|
*
|
|
* The current duration (in nanoseconds) of the timeline. A timeline
|
|
* 'starts' at time 0, so this is the maximum end time of all of its
|
|
* #GESTimelineElement-s.
|
|
*/
|
|
properties[PROP_DURATION] =
|
|
g_param_spec_uint64 ("duration", "Duration",
|
|
"The duration of the timeline", 0, G_MAXUINT64,
|
|
GST_CLOCK_TIME_NONE, G_PARAM_READABLE);
|
|
g_object_class_install_property (object_class, PROP_DURATION,
|
|
properties[PROP_DURATION]);
|
|
|
|
/**
|
|
* GESTimeline:auto-transition:
|
|
*
|
|
* Whether to automatically create a transition whenever two clips
|
|
* overlap in the timeline. See #GESLayer:auto-transition.
|
|
*/
|
|
g_object_class_install_property (object_class, PROP_AUTO_TRANSITION,
|
|
g_param_spec_boolean ("auto-transition", "Auto-Transition",
|
|
"whether the transitions are added", FALSE, G_PARAM_READWRITE));
|
|
|
|
/**
|
|
* GESTimeline:snapping-distance:
|
|
*
|
|
* The distance (in nanoseconds) at which a #GESTimelineElement being
|
|
* moved within the timeline should snap to its neighbours. Note that
|
|
* such a neighbour includes any element in the timeline, including
|
|
* across separate layers. 0 means no snapping.
|
|
*/
|
|
properties[PROP_SNAPPING_DISTANCE] =
|
|
g_param_spec_uint64 ("snapping-distance", "Snapping distance",
|
|
"Distance from which moving an object will snap with neighbours", 0,
|
|
G_MAXUINT64, 0, G_PARAM_READWRITE);
|
|
g_object_class_install_property (object_class, PROP_SNAPPING_DISTANCE,
|
|
properties[PROP_SNAPPING_DISTANCE]);
|
|
|
|
/**
|
|
* GESTimeline::track-added:
|
|
* @timeline: The #GESTimeline
|
|
* @track: The track that was added to @timeline
|
|
*
|
|
* Will be emitted after the track is added to the timeline.
|
|
*
|
|
* Note that this should not be emitted whilst a timeline is being
|
|
* loaded from its #GESProject asset. You should connect to the
|
|
* project's #GESProject::loaded signal if you want to know which
|
|
* tracks were created for the timeline.
|
|
*/
|
|
ges_timeline_signals[TRACK_ADDED] =
|
|
g_signal_new ("track-added", G_TYPE_FROM_CLASS (klass),
|
|
G_SIGNAL_RUN_FIRST, G_STRUCT_OFFSET (GESTimelineClass, track_added), NULL,
|
|
NULL, NULL, G_TYPE_NONE, 1, GES_TYPE_TRACK);
|
|
|
|
/**
|
|
* GESTimeline::track-removed:
|
|
* @timeline: The #GESTimeline
|
|
* @track: The track that was removed from @timeline
|
|
*
|
|
* Will be emitted after the track is removed from the timeline.
|
|
*/
|
|
ges_timeline_signals[TRACK_REMOVED] =
|
|
g_signal_new ("track-removed", G_TYPE_FROM_CLASS (klass),
|
|
G_SIGNAL_RUN_FIRST, G_STRUCT_OFFSET (GESTimelineClass, track_removed),
|
|
NULL, NULL, NULL, G_TYPE_NONE, 1, GES_TYPE_TRACK);
|
|
|
|
/**
|
|
* GESTimeline::layer-added:
|
|
* @timeline: The #GESTimeline
|
|
* @layer: The layer that was added to @timeline
|
|
*
|
|
* Will be emitted after the layer is added to the timeline.
|
|
*
|
|
* Note that this should not be emitted whilst a timeline is being
|
|
* loaded from its #GESProject asset. You should connect to the
|
|
* project's #GESProject::loaded signal if you want to know which
|
|
* layers were created for the timeline.
|
|
*/
|
|
ges_timeline_signals[LAYER_ADDED] =
|
|
g_signal_new ("layer-added", G_TYPE_FROM_CLASS (klass),
|
|
G_SIGNAL_RUN_FIRST, G_STRUCT_OFFSET (GESTimelineClass, layer_added), NULL,
|
|
NULL, NULL, G_TYPE_NONE, 1, GES_TYPE_LAYER);
|
|
|
|
/**
|
|
* GESTimeline::layer-removed:
|
|
* @timeline: The #GESTimeline
|
|
* @layer: The layer that was removed from @timeline
|
|
*
|
|
* Will be emitted after the layer is removed from the timeline.
|
|
*/
|
|
ges_timeline_signals[LAYER_REMOVED] =
|
|
g_signal_new ("layer-removed", G_TYPE_FROM_CLASS (klass),
|
|
G_SIGNAL_RUN_FIRST, G_STRUCT_OFFSET (GESTimelineClass, layer_removed),
|
|
NULL, NULL, NULL, G_TYPE_NONE, 1, GES_TYPE_LAYER);
|
|
|
|
/**
|
|
* GESTimeline::group-added
|
|
* @timeline: The #GESTimeline
|
|
* @group: The group that was added to @timeline
|
|
*
|
|
* Will be emitted after the group is added to to the timeline. This can
|
|
* happen when grouping with `ges_container_group`, or by adding
|
|
* containers to a newly created group.
|
|
*
|
|
* Note that this should not be emitted whilst a timeline is being
|
|
* loaded from its #GESProject asset. You should connect to the
|
|
* project's #GESProject::loaded signal if you want to know which groups
|
|
* were created for 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, NULL, G_TYPE_NONE, 1, GES_TYPE_GROUP);
|
|
|
|
/**
|
|
* GESTimeline::group-removed
|
|
* @timeline: The #GESTimeline
|
|
* @group: The group that was removed from @timeline
|
|
* @children: (element-type GESContainer) (transfer none): A list
|
|
* of #GESContainer-s that _were_ the children of the removed @group
|
|
*
|
|
* Will be emitted after the group is removed from the timeline through
|
|
* `ges_container_ungroup`. Note that @group will no longer contain its
|
|
* former children, these are held in @children.
|
|
*
|
|
* Note that if a group is emptied, then it will no longer belong to the
|
|
* timeline, but this signal will **not** be emitted in such a case.
|
|
*/
|
|
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, NULL, G_TYPE_NONE, 2, GES_TYPE_GROUP, G_TYPE_PTR_ARRAY);
|
|
|
|
/**
|
|
* GESTimeline::snapping-started:
|
|
* @timeline: The #GESTimeline
|
|
* @obj1: The first element that is snapping
|
|
* @obj2: The second element that is snapping
|
|
* @position: The position where the two objects will snap to
|
|
*
|
|
* Will be emitted whenever an element's movement invokes a snapping
|
|
* event (usually by its controlling #GESClip being moved) because its
|
|
* start or end point lies within the #GESTimeline:snapping-distance of
|
|
* another element's start or end point.
|
|
*/
|
|
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 element that was snapping
|
|
* @obj2: The second element that was snapping
|
|
* @position: The position where the two objects were to be snapped to
|
|
*
|
|
* Will be emitted whenever a snapping event ends. After a snap event
|
|
* has started (see #GESTimeline::snapping-started), it can end because
|
|
* the element whose movement created the snap event has since moved
|
|
* outside of the #GESTimeline:snapping-distance before its position was
|
|
* committed. It can also end because the element's movement was ended
|
|
* by a timeline being committed.
|
|
*/
|
|
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 clip that @track_element is being added to
|
|
* @track_element: The element being added
|
|
*
|
|
* This will be emitted whenever the timeline needs to determine which
|
|
* tracks a clip's children should be added to. The track element will
|
|
* be added to each of the tracks given in the return. If a track
|
|
* element is selected to go into multiple tracks, it will be copied
|
|
* into the additional tracks, under the same clip. Note that the copy
|
|
* will *not* keep its properties or state in sync with the original.
|
|
*
|
|
* Connect to this signal once if you wish to control which element
|
|
* should be added to which track. Doing so will overwrite the default
|
|
* behaviour, which adds @track_element to all tracks whose
|
|
* #GESTrack:track-type includes the @track_element's
|
|
* #GESTrackElement:track-type.
|
|
*
|
|
* Note that under the default track selection, if a clip would produce
|
|
* multiple core children of the same #GESTrackType, it will choose
|
|
* one of the core children arbitrarily to place in the corresponding
|
|
* tracks, with a warning for the other core children that are not
|
|
* placed in the track. For example, this would happen for a #GESUriClip
|
|
* that points to a file that contains multiple audio streams. If you
|
|
* wish to choose the stream, you could connect to this signal, and use,
|
|
* say, ges_uri_source_asset_get_stream_info() to choose which core
|
|
* source to add.
|
|
*
|
|
* When a clip is first added to a timeline, its core elements will
|
|
* be created for the current tracks in the timeline if they have not
|
|
* already been created. Then this will be emitted for each of these
|
|
* core children to select which tracks, if any, they should be added
|
|
* to. It will then be called for any non-core children in the clip.
|
|
*
|
|
* In addition, if a new track element is ever added to a clip in a
|
|
* timeline (and it is not already part of a track) this will be emitted
|
|
* to select which tracks the element should be added to.
|
|
*
|
|
* Finally, as a special case, if a track is added to the timeline
|
|
* *after* it already contains clips, then it will request the creation
|
|
* of the clips' core elements of the corresponding type, if they have
|
|
* not already been created, and this signal will be emitted for each of
|
|
* these newly created elements. In addition, this will also be released
|
|
* for all other track elements in the timeline's clips that have not
|
|
* yet been assigned a track. However, in this final case, the timeline
|
|
* will only check whether the newly added track appears in the track
|
|
* list. If it does appear, the track element will be added to the newly
|
|
* added track. All other tracks in the returned track list are ignored.
|
|
*
|
|
* In this latter case, track elements that are already part of a track
|
|
* will not be asked if they want to be copied into the new track. If
|
|
* you wish to do this, you can use ges_clip_add_child_to_track().
|
|
*
|
|
* Note that the returned #GPtrArray should own a new reference to each
|
|
* of its contained #GESTrack. The timeline will set the #GDestroyNotify
|
|
* free function on the #GPtrArray to dereference the elements.
|
|
*
|
|
* Returns: (transfer full) (element-type GESTrack): An array of
|
|
* #GESTrack-s that @track_element should be added to, or %NULL to
|
|
* not add the element to any track.
|
|
*/
|
|
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 do not want to have to connect
|
|
* to this signal.
|
|
*/
|
|
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;
|
|
priv->stream_collection = gst_stream_collection_new (NULL);
|
|
|
|
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 */
|
|
|
|
/* 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)
|
|
{
|
|
GESAutoTransition *auto_transition;
|
|
GESTrackElement *child;
|
|
/* track should not be NULL */
|
|
GESTrack *track = ges_track_element_get_track (next);
|
|
|
|
if (transition == NULL) {
|
|
GESAsset *asset;
|
|
|
|
LOCK_DYN (timeline);
|
|
timeline->priv->auto_transition_track = gst_object_ref (track);
|
|
UNLOCK_DYN (timeline);
|
|
|
|
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));
|
|
gst_object_unref (asset);
|
|
|
|
LOCK_DYN (timeline);
|
|
/* should have been set to NULL, but clear just in case */
|
|
gst_clear_object (&timeline->priv->auto_transition_track);
|
|
UNLOCK_DYN (timeline);
|
|
} else {
|
|
GST_DEBUG_OBJECT (timeline,
|
|
"Reusing already existing transition: %" GST_PTR_FORMAT, transition);
|
|
}
|
|
|
|
g_return_val_if_fail (transition, NULL);
|
|
g_return_val_if_fail (g_list_length (GES_CONTAINER_CHILDREN (transition)) ==
|
|
1, NULL);
|
|
child = GES_CONTAINER_CHILDREN (transition)->data;
|
|
if (ges_track_element_get_track (child) != track) {
|
|
GST_ERROR_OBJECT (timeline, "The auto transition element %"
|
|
GES_FORMAT " for elements %" GES_FORMAT " and %" GES_FORMAT
|
|
" is not in the same track %" GST_PTR_FORMAT,
|
|
GES_ARGS (child), GES_ARGS (previous), GES_ARGS (next), track);
|
|
return NULL;
|
|
}
|
|
|
|
/* We know there is only 1 TrackElement */
|
|
auto_transition = ges_auto_transition_new (child, 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);
|
|
}
|
|
|
|
}
|
|
|
|
/* Accept @self == NULL, making it use default framerate */
|
|
void
|
|
timeline_get_framerate (GESTimeline * self, gint * fps_n, gint * fps_d)
|
|
{
|
|
GList *tmp;
|
|
|
|
if (!self)
|
|
goto done;
|
|
|
|
*fps_n = *fps_d = -1;
|
|
LOCK_DYN (self);
|
|
for (tmp = self->tracks; tmp; tmp = tmp->next) {
|
|
if (GES_IS_VIDEO_TRACK (tmp->data)) {
|
|
GstCaps *restriction = ges_track_get_restriction_caps (tmp->data);
|
|
gint i;
|
|
|
|
if (!restriction)
|
|
continue;
|
|
|
|
for (i = 0; i < gst_caps_get_size (restriction); i++) {
|
|
gint n, d;
|
|
|
|
if (!gst_structure_get_fraction (gst_caps_get_structure (restriction,
|
|
i), "framerate", &n, &d))
|
|
continue;
|
|
|
|
if (*fps_n != -1 && *fps_d != -1 && !(n == *fps_n && d == *fps_d)) {
|
|
GST_WARNING_OBJECT (self,
|
|
"Various framerates specified, this is not supported"
|
|
" First one will be used.");
|
|
continue;
|
|
}
|
|
|
|
*fps_n = n;
|
|
*fps_d = d;
|
|
}
|
|
gst_caps_unref (restriction);
|
|
}
|
|
}
|
|
UNLOCK_DYN (self);
|
|
|
|
done:
|
|
if (*fps_n == -1 && *fps_d == -1) {
|
|
GST_INFO_OBJECT (self,
|
|
"No framerate found, using default " G_STRINGIFY (FRAMERATE_N) "/ "
|
|
G_STRINGIFY (FRAMERATE_D));
|
|
*fps_n = DEFAULT_FRAMERATE_N;
|
|
*fps_d = DEFAULT_FRAMERATE_D;
|
|
}
|
|
}
|
|
|
|
|
|
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)) {
|
|
gst_object_unref (layer);
|
|
return -1;
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
|
|
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 ? 0 : (gint64)
|
|
ges_timeline_element_get_layer_priority (GES_TIMELINE_ELEMENT (object)) -
|
|
new_layer_priority, 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: The #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: The #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 GESTrackElement *
|
|
_core_in_track (GESTrack * track, GESClip * clip)
|
|
{
|
|
GList *tmp;
|
|
for (tmp = GES_CONTAINER_CHILDREN (clip); tmp; tmp = tmp->next) {
|
|
if (GES_TRACK_ELEMENT_IS_CORE (tmp->data)
|
|
&& ges_track_element_get_track (tmp->data) == track) {
|
|
return tmp->data;
|
|
}
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
static GPtrArray *
|
|
select_tracks_for_object_default (GESTimeline * timeline,
|
|
GESClip * clip, GESTrackElement * tr_object, gpointer user_data)
|
|
{
|
|
GPtrArray *result;
|
|
GList *tmp;
|
|
GESTrackElement *core;
|
|
|
|
result = g_ptr_array_new ();
|
|
|
|
LOCK_DYN (timeline);
|
|
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))) {
|
|
if (GES_TRACK_ELEMENT_IS_CORE (tr_object)) {
|
|
core = _core_in_track (track, clip);
|
|
if (core) {
|
|
GST_WARNING_OBJECT (timeline, "The clip '%s' contains multiple "
|
|
"core elements of the same %s track type. The core child "
|
|
"'%s' has already been chosen arbitrarily for the track %"
|
|
GST_PTR_FORMAT ", which means that the other core child "
|
|
"'%s' of the same type can not be added to the track. "
|
|
"Consider connecting to "
|
|
"GESTimeline::select-tracks-for-objects to be able to "
|
|
"specify which core element should land in the track",
|
|
GES_TIMELINE_ELEMENT_NAME (clip),
|
|
ges_track_type_name (track->type),
|
|
GES_TIMELINE_ELEMENT_NAME (core), track,
|
|
GES_TIMELINE_ELEMENT_NAME (tr_object));
|
|
continue;
|
|
}
|
|
}
|
|
gst_object_ref (track);
|
|
g_ptr_array_add (result, track);
|
|
}
|
|
}
|
|
UNLOCK_DYN (timeline);
|
|
|
|
return result;
|
|
}
|
|
|
|
static GPtrArray *
|
|
_get_selected_tracks (GESTimeline * timeline, GESClip * clip,
|
|
GESTrackElement * track_element)
|
|
{
|
|
guint i, j;
|
|
GPtrArray *tracks = NULL;
|
|
|
|
g_signal_emit (G_OBJECT (timeline),
|
|
ges_timeline_signals[SELECT_TRACKS_FOR_OBJECT], 0, clip, track_element,
|
|
&tracks);
|
|
|
|
if (tracks == NULL)
|
|
tracks = g_ptr_array_new ();
|
|
|
|
g_ptr_array_set_free_func (tracks, gst_object_unref);
|
|
|
|
/* make sure unique */
|
|
for (i = 0; i < tracks->len;) {
|
|
GESTrack *track = GES_TRACK (g_ptr_array_index (tracks, i));
|
|
|
|
for (j = i + 1; j < tracks->len;) {
|
|
if (track == g_ptr_array_index (tracks, j)) {
|
|
GST_WARNING_OBJECT (timeline, "Found the track %" GST_PTR_FORMAT
|
|
" more than once in the return for select-tracks-for-object "
|
|
"signal for track element %" GES_FORMAT " in clip %"
|
|
GES_FORMAT ". Ignoring the extra track", track,
|
|
GES_ARGS (track_element), GES_ARGS (clip));
|
|
g_ptr_array_remove_index (tracks, j);
|
|
/* don't increase index since the next track is in its place */
|
|
continue;
|
|
}
|
|
j++;
|
|
}
|
|
|
|
if (ges_track_get_timeline (track) != timeline) {
|
|
GST_WARNING_OBJECT (timeline, "The track %" GST_PTR_FORMAT
|
|
" found in the return for select-tracks-for-object belongs "
|
|
"to a different timeline %" GST_PTR_FORMAT ". Ignoring this "
|
|
"track", track, ges_track_get_timeline (track));
|
|
g_ptr_array_remove_index (tracks, i);
|
|
/* don't increase index since the next track is in its place */
|
|
continue;
|
|
}
|
|
i++;
|
|
}
|
|
|
|
return tracks;
|
|
}
|
|
|
|
/* returns TRUE if track element was successfully added to all the
|
|
* selected tracks */
|
|
static gboolean
|
|
_add_track_element_to_tracks (GESTimeline * timeline, GESClip * clip,
|
|
GESTrackElement * track_element)
|
|
{
|
|
guint i;
|
|
gboolean ret = TRUE;
|
|
GPtrArray *tracks = _get_selected_tracks (timeline, clip, track_element);
|
|
|
|
for (i = 0; i < tracks->len; i++) {
|
|
GESTrack *track = GES_TRACK (g_ptr_array_index (tracks, i));
|
|
if (!ges_clip_add_child_to_track (clip, track_element, track, NULL))
|
|
ret = FALSE;
|
|
}
|
|
|
|
g_ptr_array_unref (tracks);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static gboolean
|
|
_try_add_track_element_to_track (GESTimeline * timeline, GESClip * clip,
|
|
GESTrackElement * track_element, GESTrack * track)
|
|
{
|
|
gboolean no_error = TRUE;
|
|
GPtrArray *tracks = _get_selected_tracks (timeline, clip, track_element);
|
|
|
|
/* if we are trying to add the element to a newly added track, then
|
|
* we only check whether the track list contains the newly added track,
|
|
* if it does we add the track element to the track, or add a copy if
|
|
* the track element is already in a track */
|
|
if (g_ptr_array_find (tracks, track, NULL)) {
|
|
if (!ges_clip_add_child_to_track (clip, track_element, track, NULL))
|
|
no_error = FALSE;
|
|
}
|
|
|
|
g_ptr_array_unref (tracks);
|
|
return no_error;
|
|
}
|
|
|
|
/* accepts NULL */
|
|
void
|
|
ges_timeline_set_moving_track_elements (GESTimeline * timeline, gboolean moving)
|
|
{
|
|
if (timeline) {
|
|
LOCK_DYN (timeline);
|
|
timeline->priv->track_elements_moving = moving;
|
|
UNLOCK_DYN (timeline);
|
|
}
|
|
}
|
|
|
|
static void
|
|
_set_track_selection_error (GESTimeline * timeline, gboolean error)
|
|
{
|
|
LOCK_DYN (timeline);
|
|
timeline->priv->track_selection_error = error;
|
|
UNLOCK_DYN (timeline);
|
|
}
|
|
|
|
static gboolean
|
|
_get_track_selection_error (GESTimeline * timeline)
|
|
{
|
|
gboolean ret;
|
|
|
|
LOCK_DYN (timeline);
|
|
ret = timeline->priv->track_selection_error;
|
|
timeline->priv->track_selection_error = FALSE;
|
|
UNLOCK_DYN (timeline);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void
|
|
clip_track_element_added_cb (GESClip * clip,
|
|
GESTrackElement * track_element, GESTimeline * timeline)
|
|
{
|
|
GESTrack *auto_trans_track;
|
|
gboolean error = FALSE;
|
|
|
|
if (timeline->priv->track_elements_moving) {
|
|
GST_DEBUG_OBJECT (timeline, "Ignoring element added: %" GES_FORMAT
|
|
" in %" GES_FORMAT, GES_ARGS (track_element), GES_ARGS (clip));
|
|
return;
|
|
}
|
|
|
|
if (ges_track_element_get_track (track_element) != NULL) {
|
|
GST_DEBUG_OBJECT (timeline, "Not selecting tracks for %" GES_FORMAT
|
|
" in %" GES_FORMAT " because it already part of the track %"
|
|
GST_PTR_FORMAT, GES_ARGS (track_element), GES_ARGS (clip),
|
|
ges_track_element_get_track (track_element));
|
|
return;
|
|
}
|
|
|
|
LOCK_DYN (timeline);
|
|
/* take ownership of auto_transition_track. For auto-transitions, this
|
|
* should be used exactly once! */
|
|
auto_trans_track = timeline->priv->auto_transition_track;
|
|
timeline->priv->auto_transition_track = NULL;
|
|
UNLOCK_DYN (timeline);
|
|
|
|
if (auto_trans_track) {
|
|
/* don't use track-selection */
|
|
if (!ges_clip_add_child_to_track (clip, track_element, auto_trans_track,
|
|
NULL))
|
|
error = TRUE;
|
|
gst_object_unref (auto_trans_track);
|
|
} else {
|
|
if (!_add_track_element_to_tracks (timeline, clip, track_element))
|
|
error = TRUE;
|
|
}
|
|
|
|
if (error)
|
|
_set_track_selection_error (timeline, TRUE);
|
|
}
|
|
|
|
static void
|
|
clip_track_element_removed_cb (GESClip * clip,
|
|
GESTrackElement * track_element, GESTimeline * timeline)
|
|
{
|
|
GESTrack *track = ges_track_element_get_track (track_element);
|
|
|
|
if (timeline->priv->track_elements_moving) {
|
|
GST_DEBUG_OBJECT (timeline, "Ignoring element removed (%" GST_PTR_FORMAT
|
|
" in %" GST_PTR_FORMAT, track_element, clip);
|
|
|
|
return;
|
|
}
|
|
|
|
if (track) {
|
|
/* if we have non-core elements in the same track, they should be
|
|
* removed from them to preserve the rule that a non-core can only be
|
|
* in the same track as a core element from the same clip */
|
|
if (GES_TRACK_ELEMENT_IS_CORE (track_element))
|
|
ges_clip_empty_from_track (clip, track);
|
|
ges_track_remove_element (track, track_element);
|
|
}
|
|
}
|
|
|
|
/* returns TRUE if no errors in adding to tracks */
|
|
static gboolean
|
|
_add_clip_children_to_tracks (GESTimeline * timeline, GESClip * clip,
|
|
gboolean add_core, GESTrack * new_track, GList * blacklist)
|
|
{
|
|
GList *tmp, *children;
|
|
gboolean no_errors = TRUE;
|
|
|
|
/* list of children may change if some are copied into tracks */
|
|
children = ges_container_get_children (GES_CONTAINER (clip), FALSE);
|
|
for (tmp = children; tmp; tmp = tmp->next) {
|
|
GESTrackElement *el = tmp->data;
|
|
if (GES_TRACK_ELEMENT_IS_CORE (el) != add_core)
|
|
continue;
|
|
if (g_list_find (blacklist, el))
|
|
continue;
|
|
if (ges_track_element_get_track (el) == NULL) {
|
|
gboolean res;
|
|
if (new_track)
|
|
res = _try_add_track_element_to_track (timeline, clip, el, new_track);
|
|
else
|
|
res = _add_track_element_to_tracks (timeline, clip, el);
|
|
if (!res)
|
|
no_errors = FALSE;
|
|
}
|
|
}
|
|
g_list_free_full (children, gst_object_unref);
|
|
|
|
return no_errors;
|
|
}
|
|
|
|
/* returns TRUE if no errors in adding to tracks */
|
|
static gboolean
|
|
add_object_to_tracks (GESTimeline * timeline, GESClip * clip, GESTrack * track)
|
|
{
|
|
GList *tracks, *tmp, *list, *created, *just_added = NULL;
|
|
gboolean no_errors = TRUE;
|
|
/* TODO: extend with GError ** argument, which is accepted by
|
|
* ges_clip_add_child_to_track */
|
|
|
|
GST_DEBUG_OBJECT (timeline, "Creating %" GST_PTR_FORMAT
|
|
" trackelements and adding them to our tracks", clip);
|
|
|
|
LOCK_DYN (timeline);
|
|
tracks =
|
|
g_list_copy_deep (timeline->tracks, (GCopyFunc) gst_object_ref, NULL);
|
|
UNLOCK_DYN (timeline);
|
|
/* create core elements */
|
|
for (tmp = tracks; tmp; tmp = tmp->next) {
|
|
GESTrack *track = GES_TRACK (tmp->data);
|
|
list = ges_clip_create_track_elements (clip, track->type);
|
|
for (created = list; created; created = created->next) {
|
|
GESTimelineElement *el = created->data;
|
|
|
|
gst_object_ref (el);
|
|
|
|
/* make track selection be handled by clip_track_element_added_cb
|
|
* This is needed for backward-compatibility: when adding a clip to
|
|
* a layer, the track is set for the core elements of the clip
|
|
* during the child-added signal emission, just before the user's
|
|
* own connection.
|
|
* NOTE: for the children that have not just been created, they
|
|
* are already part of the clip and so child-added will not be
|
|
* released. And when a child is selected for multiple tracks, their
|
|
* copy will be added to the clip before the track is selected, so
|
|
* the track will not be set in the child-added signal */
|
|
_set_track_selection_error (timeline, FALSE);
|
|
if (!ges_container_add (GES_CONTAINER (clip), el))
|
|
GST_ERROR_OBJECT (clip, "Could not add the core element %s "
|
|
"to the clip", el->name);
|
|
if (_get_track_selection_error (timeline))
|
|
no_errors = FALSE;
|
|
|
|
gst_object_unref (el);
|
|
}
|
|
/* just_added only used for pointer comparison, so safe to include
|
|
* elements that are now destroyed because they failed to be added to
|
|
* the clip */
|
|
just_added = g_list_concat (just_added, list);
|
|
}
|
|
g_list_free_full (tracks, gst_object_unref);
|
|
|
|
/* set the tracks for the other children, with core elements first to
|
|
* make sure the non-core can be placed above them in the track (a
|
|
* non-core can not be in a track by itself) */
|
|
/* include just_added as a blacklist to ensure we do not try the track
|
|
* selection a second time when track selection returns no tracks */
|
|
if (!_add_clip_children_to_tracks (timeline, clip, TRUE, track, just_added))
|
|
no_errors = FALSE;
|
|
if (!_add_clip_children_to_tracks (timeline, clip, FALSE, track, just_added))
|
|
no_errors = FALSE;
|
|
|
|
g_list_free (just_added);
|
|
|
|
return no_errors;
|
|
}
|
|
|
|
static void
|
|
layer_active_changed_cb (GESLayer * layer, gboolean active G_GNUC_UNUSED,
|
|
GPtrArray * tracks G_GNUC_UNUSED, GESTimeline * timeline)
|
|
{
|
|
timeline_tree_reset_layer_active (timeline->priv->tree, layer);
|
|
}
|
|
|
|
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);
|
|
}
|
|
|
|
/* returns TRUE if selecting of tracks did not error */
|
|
gboolean
|
|
ges_timeline_add_clip (GESTimeline * timeline, GESClip * clip)
|
|
{
|
|
GESProject *project;
|
|
gboolean ret;
|
|
/* TODO: extend with GError ** argument, which is accepted by
|
|
* ges_clip_add_child_to_track */
|
|
|
|
/* 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);
|
|
ret = TRUE;
|
|
} else {
|
|
ret = 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");
|
|
|
|
return ret;
|
|
}
|
|
|
|
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);
|
|
}
|
|
|
|
void
|
|
ges_timeline_remove_clip (GESTimeline * timeline, GESClip * clip)
|
|
{
|
|
GList *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_OBJECT (timeline, "Clip %" GES_FORMAT " removed from layer",
|
|
GES_ARGS (clip));
|
|
|
|
LOCK_DYN (timeline);
|
|
for (tmp = timeline->tracks; tmp; tmp = tmp->next)
|
|
ges_clip_empty_from_track (clip, tmp->data);
|
|
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);
|
|
|
|
GST_DEBUG ("Done");
|
|
}
|
|
|
|
static gboolean
|
|
update_stream_object (TrackPrivate * tr_priv)
|
|
{
|
|
gboolean res = FALSE;
|
|
GstStreamType type = GST_STREAM_TYPE_UNKNOWN;
|
|
gchar *stream_id;
|
|
|
|
g_object_get (tr_priv->track, "id", &stream_id, NULL);
|
|
if (tr_priv->track->type == GES_TRACK_TYPE_VIDEO)
|
|
type = GST_STREAM_TYPE_VIDEO;
|
|
if (tr_priv->track->type == GES_TRACK_TYPE_AUDIO)
|
|
type = GST_STREAM_TYPE_AUDIO;
|
|
|
|
if (!tr_priv->stream ||
|
|
g_strcmp0 (stream_id, gst_stream_get_stream_id (tr_priv->stream))) {
|
|
res = TRUE;
|
|
gst_object_replace ((GstObject **) & tr_priv->stream,
|
|
(GstObject *) gst_stream_new (stream_id,
|
|
(GstCaps *) ges_track_get_caps (tr_priv->track),
|
|
type, GST_STREAM_FLAG_NONE)
|
|
);
|
|
}
|
|
|
|
g_free (stream_id);
|
|
|
|
return res;
|
|
}
|
|
|
|
static GstPadProbeReturn
|
|
_pad_probe_cb (GstPad * mixer_pad, GstPadProbeInfo * info,
|
|
TrackPrivate * tr_priv)
|
|
{
|
|
GstEvent *event = GST_PAD_PROBE_INFO_EVENT (info);
|
|
GESTimeline *timeline = tr_priv->timeline;
|
|
|
|
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 ();
|
|
}
|
|
|
|
gst_event_unref (event);
|
|
event = info->data =
|
|
gst_event_new_stream_start (gst_stream_get_stream_id (tr_priv->stream));
|
|
gst_event_set_stream (event, tr_priv->stream);
|
|
gst_event_set_group_id (event, 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, NULL);
|
|
|
|
UNLOCK_DYN (tr_priv->timeline);
|
|
}
|
|
|
|
gboolean
|
|
timeline_add_element (GESTimeline * timeline, GESTimelineElement * element)
|
|
{
|
|
/* FIXME: handle NULL element->name */
|
|
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;
|
|
}
|
|
|
|
/* FIXME: why is the hash table using the name of the element, rather than
|
|
* the pointer to the element itself as the key? This makes it awkward
|
|
* to change the name of an element after it has been added. See
|
|
* ges_timeline_element_set_name. It means we have to remove and then
|
|
* re-add the element. */
|
|
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;
|
|
|
|
LOCK_DYN (timeline);
|
|
for (tmp = timeline->tracks; tmp; tmp = tmp->next) {
|
|
track_resort_and_fill_gaps (tmp->data);
|
|
}
|
|
UNLOCK_DYN (timeline);
|
|
}
|
|
|
|
GNode *
|
|
timeline_get_tree (GESTimeline * timeline)
|
|
{
|
|
return timeline->priv->tree;
|
|
}
|
|
|
|
/**** API *****/
|
|
/**
|
|
* ges_timeline_new:
|
|
*
|
|
* Creates a new empty timeline.
|
|
*
|
|
* 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 if loading fails, or
|
|
* %NULL to ignore
|
|
*
|
|
* 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 if loading fails, or
|
|
* %NULL to ignore
|
|
*
|
|
* Loads the contents of URI into the timeline.
|
|
*
|
|
* Returns: %TRUE if the timeline was loaded successfully from @uri.
|
|
*/
|
|
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: The #GESTimeline
|
|
* @uri: The location to save to
|
|
* @formatter_asset: (allow-none): The formatter asset to use, or %NULL
|
|
* @overwrite: %TRUE to overwrite file if it exists
|
|
* @error: (out) (allow-none): An error to be set if saving fails, or
|
|
* %NULL to ignore
|
|
*
|
|
* Saves the timeline to the given location. If @formatter_asset is %NULL,
|
|
* the method will attempt to save in the same format the timeline was
|
|
* loaded from, before defaulting to the formatter with highest rank.
|
|
*
|
|
* Returns: %TRUE if @timeline was successfully saved to @uri.
|
|
*/
|
|
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: The #GESTimeline
|
|
*
|
|
* Get the list of #GESGroup-s present in the timeline.
|
|
*
|
|
* Returns: (transfer none) (element-type GESGroup): The list of
|
|
* groups that contain clips present in @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: The #GESTimeline
|
|
*
|
|
* Append a newly created layer to the timeline. The layer will
|
|
* be added at the lowest #GESLayer:priority (numerically, the highest).
|
|
*
|
|
* Returns: (transfer none): The newly created layer.
|
|
*/
|
|
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);
|
|
/* FIXME: if a timeline contains 2 layers with priority 0 and 2, then
|
|
* this will set the layer priority of the new layer to 2 as well! */
|
|
ges_layer_set_priority (layer, priority);
|
|
|
|
ges_timeline_add_layer (timeline, layer);
|
|
|
|
return layer;
|
|
}
|
|
|
|
/**
|
|
* ges_timeline_add_layer:
|
|
* @timeline: The #GESTimeline
|
|
* @layer: (transfer floating): The layer to add
|
|
*
|
|
* Add a layer to the timeline.
|
|
*
|
|
* If the layer contains #GESClip-s, then this may trigger the creation of
|
|
* their core track element children for the timeline's tracks, and the
|
|
* placement of the clip's children in the tracks of the timeline using
|
|
* #GESTimeline::select-tracks-for-object. Some errors may occur if this
|
|
* would break one of the configuration rules of the timeline in one of
|
|
* its tracks. In such cases, some track elements would fail to be added
|
|
* to their tracks, but this method would still return %TRUE. As such, it
|
|
* is advised that you only add clips to layers that already part of a
|
|
* timeline. In such situations, ges_layer_add_clip() is able to fail if
|
|
* adding the clip would cause such an error.
|
|
*
|
|
* Deprecated: 1.18: This method requires you to ensure the layer's
|
|
* #GESLayer:priority will be unique to the timeline. Use
|
|
* ges_timeline_append_layer() and ges_timeline_move_layer() instead.
|
|
*
|
|
* Returns: %TRUE if @layer was properly added.
|
|
*/
|
|
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;
|
|
}
|
|
|
|
/* FIXME: ensure the layer->priority does not conflict with an existing
|
|
* layer in the timeline. Currently can add several layers with equal
|
|
* layer priorities */
|
|
|
|
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 (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);
|
|
g_signal_connect_after (layer, "active-changed",
|
|
G_CALLBACK (layer_active_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)
|
|
ges_timeline_add_clip (timeline, tmp->data);
|
|
g_list_free_full (objects, gst_object_unref);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
/**
|
|
* ges_timeline_remove_layer:
|
|
* @timeline: The #GESTimeline
|
|
* @layer: The layer to remove
|
|
*
|
|
* Removes a layer from the timeline.
|
|
*
|
|
* Returns: %TRUE if @layer was properly removed.
|
|
*/
|
|
|
|
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)
|
|
ges_timeline_remove_clip (timeline, tmp->data);
|
|
g_list_free_full (layer_objects, gst_object_unref);
|
|
|
|
/* Disconnect signals */
|
|
GST_DEBUG ("Disconnecting signal callbacks");
|
|
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);
|
|
g_signal_handlers_disconnect_by_func (layer, layer_active_changed_cb,
|
|
timeline);
|
|
|
|
timeline->layers = g_list_remove (timeline->layers, layer);
|
|
ges_layer_set_timeline (layer, NULL);
|
|
/* FIXME: we should resync the layer priorities */
|
|
|
|
g_signal_emit (timeline, ges_timeline_signals[LAYER_REMOVED], 0, layer);
|
|
|
|
gst_object_unref (layer);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
/**
|
|
* ges_timeline_add_track:
|
|
* @timeline: The #GESTimeline
|
|
* @track: (transfer full): The track to add
|
|
*
|
|
* Add a track to the timeline.
|
|
*
|
|
* If the timeline already contains clips, then this may trigger the
|
|
* creation of their core track element children for the track, and the
|
|
* placement of the clip's children in the track of the timeline using
|
|
* #GESTimeline::select-tracks-for-object. Some errors may occur if this
|
|
* would break one of the configuration rules for the timeline in the
|
|
* track. In such cases, some track elements would fail to be added to the
|
|
* track, but this method would still return %TRUE. As such, it is advised
|
|
* that you avoid adding tracks to timelines that already contain clips.
|
|
*
|
|
* Returns: %TRUE if @track was properly added.
|
|
*/
|
|
|
|
/* 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 */
|
|
LOCK_DYN (timeline);
|
|
if (G_UNLIKELY (g_list_find (timeline->tracks, (gconstpointer) track))) {
|
|
UNLOCK_DYN (timeline);
|
|
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)))) {
|
|
UNLOCK_DYN (timeline);
|
|
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;
|
|
|
|
update_stream_object (tr_priv);
|
|
gst_stream_collection_add_stream (timeline->priv->stream_collection,
|
|
gst_object_ref (tr_priv->stream));
|
|
|
|
/* Add the track to the list of tracks we track */
|
|
timeline->priv->priv_tracks = g_list_append (timeline->priv->priv_tracks,
|
|
tr_priv);
|
|
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);
|
|
UNLOCK_DYN (timeline);
|
|
|
|
/* 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*/
|
|
|
|
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)
|
|
add_object_to_tracks (timeline, obj->data, track);
|
|
|
|
g_list_free_full (objects, gst_object_unref);
|
|
}
|
|
|
|
/* 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: The #GESTimeline
|
|
* @track: The track to remove
|
|
*
|
|
* Remove a track from the timeline.
|
|
*
|
|
* Returns: %TRUE if @track was properly removed.
|
|
*/
|
|
|
|
/* 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);
|
|
|
|
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);
|
|
|
|
/* empty track of all elements that belong to the timeline's clips */
|
|
/* elements with no parent can stay in the track, but their timeline
|
|
* will be set to NULL when the track's timeline is set to NULL */
|
|
|
|
for (tmp = timeline->layers; tmp; tmp = tmp->next) {
|
|
GList *clips, *clip;
|
|
clips = ges_layer_get_clips (tmp->data);
|
|
|
|
for (clip = clips; clip; clip = clip->next)
|
|
ges_clip_empty_from_track (clip->data, track);
|
|
|
|
g_list_free_full (clips, gst_object_unref);
|
|
}
|
|
|
|
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);
|
|
}
|
|
|
|
/* 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: A pad
|
|
*
|
|
* Search for the #GESTrack corresponding to the given timeline's pad.
|
|
*
|
|
* Returns: (transfer none) (nullable): The track corresponding to @pad,
|
|
* 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: A track
|
|
*
|
|
* Search for the #GstPad corresponding to the given timeline's track.
|
|
* You can link to this pad to receive the output data of the given track.
|
|
*
|
|
* Returns: (transfer none) (nullable): The pad corresponding to @track,
|
|
* 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: The #GESTimeline
|
|
*
|
|
* Get the list of #GESTrack-s used by the timeline.
|
|
*
|
|
* Returns: (transfer full) (element-type GESTrack): The list of tracks
|
|
* used by @timeline.
|
|
*/
|
|
GList *
|
|
ges_timeline_get_tracks (GESTimeline * timeline)
|
|
{
|
|
GList *res = NULL;
|
|
g_return_val_if_fail (GES_IS_TIMELINE (timeline), NULL);
|
|
|
|
LOCK_DYN (timeline);
|
|
res = g_list_copy_deep (timeline->tracks, (GCopyFunc) gst_object_ref, NULL);
|
|
UNLOCK_DYN (timeline);
|
|
|
|
return res;
|
|
}
|
|
|
|
/**
|
|
* ges_timeline_get_layers:
|
|
* @timeline: The #GESTimeline
|
|
*
|
|
* Get the list of #GESLayer-s present in the timeline.
|
|
*
|
|
* Returns: (transfer full) (element-type GESLayer): The list of
|
|
* layers present in @timeline sorted by priority.
|
|
*/
|
|
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 {
|
|
GstStreamCollection *collection = gst_stream_collection_new (NULL);
|
|
|
|
LOCK_DYN (timeline);
|
|
for (tmp = timeline->tracks; tmp; tmp = tmp->next) {
|
|
TrackPrivate *tr_priv =
|
|
g_list_find_custom (timeline->priv->priv_tracks, tmp->data,
|
|
(GCompareFunc) custom_find_track)->data;
|
|
|
|
update_stream_object (tr_priv);
|
|
gst_stream_collection_add_stream (collection,
|
|
gst_object_ref (tr_priv->stream));
|
|
g_signal_connect (tmp->data, "commited", G_CALLBACK (track_commited_cb),
|
|
timeline);
|
|
if (!ges_track_commit (GES_TRACK (tmp->data)))
|
|
res = FALSE;
|
|
}
|
|
|
|
gst_object_unref (timeline->priv->stream_collection);
|
|
timeline->priv->stream_collection = collection;
|
|
UNLOCK_DYN (timeline);
|
|
}
|
|
|
|
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 immediately executed
|
|
* internally, in a way that effects the output data of the timeline. You
|
|
* should call this method when you are done with a set of changes and you
|
|
* want them to be executed.
|
|
*
|
|
* Any pending changes will be executed in the backend. The
|
|
* #GESTimeline::commited signal will be emitted once this has completed.
|
|
* You should not try to change the state of the timeline, seek it or add
|
|
* tracks to it before receiving this signal. You can use
|
|
* ges_timeline_commit_sync() if you do not want to perform other tasks in
|
|
* the mean time.
|
|
*
|
|
* Note that all the pending changes will automatically be executed when
|
|
* the timeline goes from #GST_STATE_READY to #GST_STATE_PAUSED, which is
|
|
* usually triggered by a corresponding state changes in a containing
|
|
* #GESPipeline.
|
|
*
|
|
* Returns: %TRUE if pending changes were committed, or %FALSE if nothing
|
|
* needed to be committed.
|
|
*/
|
|
gboolean
|
|
ges_timeline_commit (GESTimeline * timeline)
|
|
{
|
|
gboolean ret;
|
|
GstStreamCollection *pcollection = timeline->priv->stream_collection;
|
|
|
|
g_return_val_if_fail (GES_IS_TIMELINE (timeline), FALSE);
|
|
|
|
LOCK_DYN (timeline);
|
|
ret = ges_timeline_commit_unlocked (timeline);
|
|
UNLOCK_DYN (timeline);
|
|
|
|
if (pcollection != timeline->priv->stream_collection) {
|
|
gst_element_post_message ((GstElement *) timeline,
|
|
gst_message_new_stream_collection ((GstObject *) timeline,
|
|
timeline->priv->stream_collection));
|
|
}
|
|
|
|
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 clips contained in the
|
|
* timeline and wait for the changes to complete.
|
|
*
|
|
* See ges_timeline_commit().
|
|
*
|
|
* Returns: %TRUE if pending changes were committed, or %FALSE if nothing
|
|
* needed to be committed.
|
|
*/
|
|
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: The #GESTimeline
|
|
*
|
|
* Get the current #GESTimeline:duration of the 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: The #GESTimeline
|
|
*
|
|
* Gets #GESTimeline:auto-transition for the timeline.
|
|
*
|
|
* Returns: The auto-transition of @self.
|
|
*/
|
|
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: The #GESTimeline
|
|
* @auto_transition: Whether transitions should be automatically added
|
|
* to @timeline's layers
|
|
*
|
|
* Sets #GESTimeline:auto-transition for the timeline. This will also set
|
|
* the corresponding #GESLayer:auto-transition for all of the timeline's
|
|
* layers to the same value. See ges_layer_set_auto_transition() if you
|
|
* wish to set the layer's #GESLayer:auto-transition individually.
|
|
*/
|
|
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: The #GESTimeline
|
|
*
|
|
* Gets the #GESTimeline:snapping-distance for the timeline.
|
|
*
|
|
* Returns: The snapping distance (in nanoseconds) of @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: The #GESTimeline
|
|
* @snapping_distance: The snapping distance to use (in nanoseconds)
|
|
*
|
|
* Sets #GESTimeline:snapping-distance for the timeline. This new value
|
|
* will only effect future snappings and will not be used to snap the
|
|
* current element positions within the timeline.
|
|
*/
|
|
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: The #GESTimeline
|
|
* @name: The name of the element to find
|
|
*
|
|
* Gets the element contained in the timeline with the given name.
|
|
*
|
|
* Returns: (transfer full) (nullable): The timeline element in @timeline
|
|
* with the given @name, or %NULL if it was 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);
|
|
|
|
/* FIXME: handle NULL name */
|
|
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: The #GESTimeline
|
|
*
|
|
* Check whether the timeline is empty or not.
|
|
*
|
|
* Returns: %TRUE if @timeline is empty.
|
|
*/
|
|
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 retrieve a layer from
|
|
* @priority: The priority/index of the layer to find
|
|
*
|
|
* Retrieve the layer whose index in the timeline matches the given
|
|
* priority.
|
|
*
|
|
* Returns: (transfer full) (nullable): The layer with the given
|
|
* @priority, or %NULL if none 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 @element should be pasted
|
|
* @element: The element to paste
|
|
* @position: The position in the timeline @element should be pasted to,
|
|
* i.e. the #GESTimelineElement:start value for the pasted element.
|
|
* @layer_priority: The layer into which the element should be pasted.
|
|
* -1 means paste to the same layer from which @element has been copied from
|
|
*
|
|
* Paste an element inside the timeline. @element **must** be the return of
|
|
* ges_timeline_element_copy() with `deep=TRUE`,
|
|
* and it should not be changed before pasting. @element itself is not
|
|
* placed in the timeline, instead a new element is created, alike to the
|
|
* originally copied element. Note that the originally copied element must
|
|
* also lie within @timeline, at both the point of copying and pasting.
|
|
*
|
|
* Pasting may fail if it would place the timeline in an unsupported
|
|
* configuration.
|
|
*
|
|
* After calling this function @element should not be used. In particular,
|
|
* @element can **not** be pasted again. Instead, you can copy the
|
|
* returned element and paste that copy (although, this is only possible
|
|
* if the paste was successful).
|
|
*
|
|
* See also ges_timeline_element_paste().
|
|
*
|
|
* Returns: (transfer full) (nullable): The newly created element, or
|
|
* %NULL if pasting fails.
|
|
*/
|
|
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);
|
|
/* steal ownership of the copied 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");
|
|
gst_object_unref (copied_from);
|
|
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");
|
|
gst_object_unref (copied_from);
|
|
return NULL;
|
|
}
|
|
|
|
res = element_class->paste (element, copied_from, position);
|
|
|
|
gst_object_unref (copied_from);
|
|
|
|
return res ? g_object_ref_sink (res) : res;
|
|
}
|
|
|
|
/**
|
|
* ges_timeline_move_layer:
|
|
* @timeline: A #GESTimeline
|
|
* @layer: A layer within @timeline, whose priority should be changed
|
|
* @new_layer_priority: The new index for @layer
|
|
*
|
|
* Moves a layer within the timeline to the index given by
|
|
* @new_layer_priority.
|
|
* An index of 0 corresponds to the layer with the highest priority in a
|
|
* timeline. If @new_layer_priority is greater than the number of layers
|
|
* present in the timeline, it will become the lowest priority layer.
|
|
*
|
|
* Since: 1.16
|
|
*/
|
|
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;
|
|
}
|
|
|
|
/**
|
|
* ges_timeline_get_frame_time:
|
|
* @self: The self on which to retrieve the timestamp for @frame_number
|
|
* @frame_number: The frame number to get the corresponding timestamp of in the
|
|
* timeline coordinates
|
|
*
|
|
* This method allows you to convert a timeline output frame number into a
|
|
* timeline #GstClockTime. For example, this time could be used to seek to a
|
|
* particular frame in the timeline's output, or as the edit position for
|
|
* an element within the timeline.
|
|
*
|
|
* Returns: The timestamp corresponding to @frame_number in the output of @self.
|
|
*/
|
|
GstClockTime
|
|
ges_timeline_get_frame_time (GESTimeline * self, GESFrameNumber frame_number)
|
|
{
|
|
gint fps_n, fps_d;
|
|
|
|
g_return_val_if_fail (GES_IS_TIMELINE (self), GST_CLOCK_TIME_NONE);
|
|
g_return_val_if_fail (GES_FRAME_NUMBER_IS_VALID (frame_number),
|
|
GST_CLOCK_TIME_NONE);
|
|
|
|
timeline_get_framerate (self, &fps_n, &fps_d);
|
|
|
|
return gst_util_uint64_scale_int_ceil (frame_number,
|
|
fps_d * GST_SECOND, fps_n);
|
|
}
|
|
|
|
/**
|
|
* ges_timeline_get_frame_at:
|
|
* @self: A #GESTimeline
|
|
* @timestamp: The timestamp to get the corresponding frame number of
|
|
*
|
|
* This method allows you to convert a timeline #GstClockTime into its
|
|
* corresponding #GESFrameNumber in the timeline's output.
|
|
*
|
|
* Returns: The frame number @timestamp corresponds to.
|
|
*/
|
|
GESFrameNumber
|
|
ges_timeline_get_frame_at (GESTimeline * self, GstClockTime timestamp)
|
|
{
|
|
gint fps_n, fps_d;
|
|
|
|
g_return_val_if_fail (GES_IS_TIMELINE (self), GES_FRAME_NUMBER_NONE);
|
|
g_return_val_if_fail (GST_CLOCK_TIME_IS_VALID (timestamp),
|
|
GES_FRAME_NUMBER_NONE);
|
|
|
|
timeline_get_framerate (self, &fps_n, &fps_d);
|
|
|
|
return gst_util_uint64_scale (timestamp, fps_n, fps_d * GST_SECOND);
|
|
}
|