gstreamer/ges/ges-track-transition.h

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/* GStreamer Editing Services
* Copyright (C) 2010 Brandon Lewis <brandon@collabora.co.uk>
* 2010 Nokia Corporation
*
* 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., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#ifndef _GES_TRACK_TRANSITION
#define _GES_TRACK_TRANSITION
#include <glib-object.h>
#include <gst/controller/gstcontroller.h>
#include <gst/controller/gstinterpolationcontrolsource.h>
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#include <ges/ges-types.h>
#include <ges/ges-track-object.h>
G_BEGIN_DECLS
#define GES_TYPE_TRACK_TRANSITION ges_track_transition_get_type()
#define GES_TRACK_TRANSITION(obj) \
(G_TYPE_CHECK_INSTANCE_CAST ((obj), GES_TYPE_TRACK_TRANSITION,\
GESTrackTransition))
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#define GES_TRACK_TRANSITION_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_CAST ((klass), GES_TYPE_TRACK_TRANSITION,\
GESTrackTransitionClass))
#define GES_IS_TRACK_TRANSITION(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE ((obj), GES_TYPE_TRACK_TRANSITION))
#define GES_IS_TRACK_TRANSITION_CLASS(klass) \
(G_TYPE_CHECK_CLASS_TYPE ((klass), GES_TYPE_TRACK_TRANSITION))
#define GES_TRACK_TRANSITION_GET_CLASS(obj) \
(G_TYPE_INSTANCE_GET_CLASS ((obj), GES_TYPE_TRACK_TRANSITION,\
GESTrackTransitionClass)
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/**
* GESTrackTransition:
* @parent: parent
* @vtype: a #GEnumValue representing the type of transition to apply.
*
* Track level representation of a transition. Has a concrete implementation
* for both audio and video streams.
*
*/
struct _GESTrackTransition
{
GESTrackObject parent;
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/*< public >*/
/* given to to smpte alpha element */
gint vtype;
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/*< private >*/
/* these enable video interpolation */
GstController *vcontroller;
GstInterpolationControlSource *vcontrol_source;
/* so we can support changing between wipes */
GstElement *vsmpte;
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GstElement *vmixer;
GstPad *sinka;
GstPad *sinkb;
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/* these will be different depending on whether smptealpha or alpha element
* is used */
gdouble vstart_value;
gdouble vend_value;
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/* these enable volume interpolation. Unlike video, both inputs are adjusted
* simultaneously */
GstController *a_acontroller;
GstInterpolationControlSource *a_acontrol_source;
GstController *a_bcontroller;
GstInterpolationControlSource *a_bcontrol_source;
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};
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/**
* GESTrackTransitionClass
* @parent_class: parent class
*/
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struct _GESTrackTransitionClass {
GESTrackObjectClass parent_class;
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/* <public> */
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};
GType ges_track_transition_get_type (void);
GESTrackTransition *ges_track_transition_new (gint value);
void ges_track_transition_set_vtype(GESTrackTransition *tr, gint vtype);
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G_END_DECLS
#endif