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125 lines
3 KiB
C
125 lines
3 KiB
C
/* GStreamer Editing Services
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* Copyright (C) 2010 Edward Hervey <edward.hervey@collabora.co.uk>
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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:ges-utils
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* @short_description: Convenience methods
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*
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*/
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#include <string.h>
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#include "ges-internal.h"
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#include "ges-timeline.h"
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#include "ges-track.h"
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#include "ges-layer.h"
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#include "ges.h"
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/**
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* ges_timeline_new_audio_video:
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*
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* Creates a new #GESTimeline containing a raw audio and a
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* raw video track.
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*
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* Returns: The newly created #GESTimeline.
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*/
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GESTimeline *
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ges_timeline_new_audio_video (void)
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{
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GESTrack *tracka, *trackv;
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GESTimeline *timeline;
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/* This is our main GESTimeline */
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timeline = ges_timeline_new ();
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tracka = GES_TRACK (ges_audio_track_new ());
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trackv = GES_TRACK (ges_video_track_new ());
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if (!ges_timeline_add_track (timeline, trackv) ||
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!ges_timeline_add_track (timeline, tracka)) {
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gst_object_unref (timeline);
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timeline = NULL;
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}
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return timeline;
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}
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/* Internal utilities */
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gint
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element_start_compare (GESTimelineElement * a, GESTimelineElement * b)
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{
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if (a->start == b->start) {
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if (a->priority < b->priority)
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return -1;
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if (a->priority > b->priority)
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return 1;
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if (a->duration < b->duration)
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return -1;
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if (a->duration > b->duration)
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return 1;
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return 0;
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} else if (a->start < b->start)
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return -1;
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return 1;
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}
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gint
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element_end_compare (GESTimelineElement * a, GESTimelineElement * b)
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{
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if (GES_TIMELINE_ELEMENT_END (a) == GES_TIMELINE_ELEMENT_END (b)) {
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if (a->priority < b->priority)
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return -1;
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if (a->priority > b->priority)
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return 1;
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if (a->duration < b->duration)
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return -1;
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if (a->duration > b->duration)
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return 1;
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return 0;
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} else if (GES_TIMELINE_ELEMENT_END (a) < (GES_TIMELINE_ELEMENT_END (b)))
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return -1;
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return 1;
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}
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gboolean
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ges_pspec_equal (gconstpointer key_spec_1, gconstpointer key_spec_2)
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{
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const GParamSpec *key1 = key_spec_1;
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const GParamSpec *key2 = key_spec_2;
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return (key1->owner_type == key2->owner_type &&
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strcmp (key1->name, key2->name) == 0);
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}
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guint
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ges_pspec_hash (gconstpointer key_spec)
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{
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const GParamSpec *key = key_spec;
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const gchar *p;
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guint h = key->owner_type;
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for (p = key->name; *p; p++)
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h = (h << 5) - h + *p;
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return h;
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}
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