gstreamer/subprojects/gst-editing-services/ges/ges-base-effect-clip.c

85 lines
2.7 KiB
C

/* GStreamer Editing Services
* Copyright (C) 2011 Thibault Saunier <thibault.saunier@collabora.co.uk>
*
* 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
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
/**
* SECTION: gesbaseeffectclip
* @title: GESBaseEffectClip
* @short_description: An effect in a #GESLayer
*
* #GESBaseEffectClip-s are clips whose core elements are
* #GESBaseEffect-s.
*
* ## Effects
*
* #GESBaseEffectClip-s can have **additional** #GESBaseEffect-s added as
* non-core elements. These additional effects are applied to the output
* of the core effects of the clip that they share a #GESTrack with. See
* #GESClip for how to add and move these effects from the clip.
*
* Note that you cannot add time effects to #GESBaseEffectClip, neither
* as core children, nor as additional effects.
*/
/* FIXME: properly handle the priority of the children. How should we sort
* the priority of effects when two #GESBaseEffectClip's overlap? */
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <ges/ges.h>
#include "ges-internal.h"
#include "ges-types.h"
struct _GESBaseEffectClipPrivate
{
void *nothing;
};
G_DEFINE_ABSTRACT_TYPE_WITH_PRIVATE (GESBaseEffectClip, ges_base_effect_clip,
GES_TYPE_OPERATION_CLIP);
static gboolean
ges_base_effect_clip_add_child (GESContainer * container,
GESTimelineElement * element)
{
if (GES_IS_TIME_EFFECT (element)) {
GST_WARNING_OBJECT (container, "Cannot add %" GES_FORMAT " as a child "
"because it is a time effect", GES_ARGS (element));
return FALSE;
}
return
GES_CONTAINER_CLASS (ges_base_effect_clip_parent_class)->add_child
(container, element);
}
static void
ges_base_effect_clip_class_init (GESBaseEffectClipClass * klass)
{
GESContainerClass *container_class = GES_CONTAINER_CLASS (klass);
GES_CLIP_CLASS_CAN_ADD_EFFECTS (klass) = TRUE;
container_class->add_child = ges_base_effect_clip_add_child;
}
static void
ges_base_effect_clip_init (GESBaseEffectClip * self)
{
self->priv = ges_base_effect_clip_get_instance_private (self);
}