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