gstreamer/ges/ges-source-clip.c

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/* GStreamer Editing Services
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* Copyright (C) 2009 Edward Hervey <edward.hervey@collabora.co.uk>
* 2009 Nokia Corporation
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*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
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*/
/**
* SECTION:gessourceclip
* @title: GESSourceClip
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* @short_description: Base Class for sources of a GESLayer
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "ges-internal.h"
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#include "ges-clip.h"
#include "ges-source-clip.h"
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#include "ges-source.h"
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struct _GESSourceClipPrivate
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{
/* dummy variable */
void *nothing;
};
enum
{
PROP_0,
};
G_DEFINE_TYPE_WITH_PRIVATE (GESSourceClip, ges_source_clip, GES_TYPE_CLIP);
static gboolean
_set_start (GESTimelineElement * element, GstClockTime start)
{
GESTimelineElement *toplevel =
ges_timeline_element_get_toplevel_parent (element);
gst_object_unref (toplevel);
if (element->timeline
&& !ELEMENT_FLAG_IS_SET (element, GES_TIMELINE_ELEMENT_SET_SIMPLE)
&& !ELEMENT_FLAG_IS_SET (toplevel, GES_TIMELINE_ELEMENT_SET_SIMPLE)) {
if (!ges_timeline_move_object_simple (element->timeline, element, NULL,
GES_EDGE_NONE, start))
return FALSE;
return -1;
}
return
GES_TIMELINE_ELEMENT_CLASS (ges_source_clip_parent_class)->set_start
(element, start);
}
static gboolean
_set_duration (GESTimelineElement * element, GstClockTime duration)
{
GESTimelineElement *toplevel =
ges_timeline_element_get_toplevel_parent (element);
gst_object_unref (toplevel);
if (element->timeline
&& !ELEMENT_FLAG_IS_SET (element, GES_TIMELINE_ELEMENT_SET_SIMPLE)
&& !ELEMENT_FLAG_IS_SET (toplevel, GES_TIMELINE_ELEMENT_SET_SIMPLE)) {
return !timeline_trim_object (element->timeline, element,
GES_TIMELINE_ELEMENT_LAYER_PRIORITY (element), NULL, GES_EDGE_END,
element->start + duration);
}
return
GES_TIMELINE_ELEMENT_CLASS (ges_source_clip_parent_class)->set_duration
(element, duration);
}
static void
ges_source_clip_get_property (GObject * object, guint property_id,
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GValue * value, GParamSpec * pspec)
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{
switch (property_id) {
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default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
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}
}
static void
ges_source_clip_set_property (GObject * object, guint property_id,
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const GValue * value, GParamSpec * pspec)
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{
switch (property_id) {
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default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
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}
}
static void
ges_source_clip_finalize (GObject * object)
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{
G_OBJECT_CLASS (ges_source_clip_parent_class)->finalize (object);
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}
static void
ges_source_clip_class_init (GESSourceClipClass * klass)
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{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
GESTimelineElementClass *element_class = GES_TIMELINE_ELEMENT_CLASS (klass);
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object_class->get_property = ges_source_clip_get_property;
object_class->set_property = ges_source_clip_set_property;
object_class->finalize = ges_source_clip_finalize;
element_class->set_start = _set_start;
element_class->set_duration = _set_duration;
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}
static void
ges_source_clip_init (GESSourceClip * self)
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{
self->priv = ges_source_clip_get_instance_private (self);
}