gstreamer/ges/ges-timeline-element.h
2013-02-15 14:42:04 -03:00

177 lines
7 KiB
C

/*
* gst-editing-services
* Copyright (C) <2013> Thibault Saunier <thibault.saunier@collabora.com>
* <2013> Collabora Ltd.
*
* gst-editing-services is free software: you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* gst-editing-services 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef _GES_TIMELINE_ELEMENT_H_
#define _GES_TIMELINE_ELEMENT_H_
#include <glib-object.h>
#include <gst/gst.h>
#include "ges-enums.h"
#include "ges-types.h"
G_BEGIN_DECLS
#define GES_TYPE_TIMELINE_ELEMENT (ges_timeline_element_get_type ())
#define GES_TIMELINE_ELEMENT(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GES_TYPE_TIMELINE_ELEMENT, GESTimelineElement))
#define GES_TIMELINE_ELEMENT_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GES_TYPE_TIMELINE_ELEMENT, GESTimelineElementClass))
#define GES_IS_TIMELINE_ELEMENT(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GES_TYPE_TIMELINE_ELEMENT))
#define GES_IS_TIMELINE_ELEMENT_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GES_TYPE_TIMELINE_ELEMENT))
#define GES_TIMELINE_ELEMENT_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GES_TYPE_TIMELINE_ELEMENT, GESTimelineElementClass))
typedef struct _GESTimelineElementPrivate GESTimelineElementPrivate;
/**
* GES_TIMELINE_ELEMENT_START:
* @obj: a #GESTimelineElement
*
* The start position of the object (in nanoseconds).
*/
#define GES_TIMELINE_ELEMENT_START(obj) (((GESTimelineElement*)obj)->start)
/**
* GES_TIMELINE_ELEMENT_INPOINT:
* @obj: a #GESTimelineElement
*
* The in-point of the object (in nanoseconds).
*/
#define GES_TIMELINE_ELEMENT_INPOINT(obj) (((GESTimelineElement*)obj)->inpoint)
/**
* GES_TIMELINE_ELEMENT_DURATION:
* @obj: a #GESTimelineElement
*
* The duration of the object (in nanoseconds).
*/
#define GES_TIMELINE_ELEMENT_DURATION(obj) (((GESTimelineElement*)obj)->duration)
/**
* GES_TIMELINE_ELEMENT_MAX_DURATION:
* @obj: a #GESTimelineElement
*
* The maximun duration of the object (in nanoseconds).
*/
#define GES_TIMELINE_ELEMENT_MAX_DURATION(obj) (((GESTimelineElement*)obj)->maxduration)
/**
* GES_TIMELINE_ELEMENT_PRIORITY:
* @obj: a #GESTimelineElement
*
* The priority of the object.
*/
#define GES_TIMELINE_ELEMENT_PRIORITY(obj) (((GESTimelineElement*)obj)->priority)
/**
* GES_TIMELINE_ELEMENT_PARENT:
* @obj: a #GESTimelineElement
*
* The parent of the object.
*/
#define GES_TIMELINE_ELEMENT_PARENT(obj) (((GESTimelineElement*)obj)->parent)
/**
* GESTimelineElementClass:
* @set_start: method to set the start of a #GESTimelineElement
* @set_duration: method to set the duration of a #GESTimelineElement
* @set_inpoint: method to set the inpoint of a #GESTimelineElement
* @set_max_duration: method to set the maximun duration of a #GESTimelineElement
* @set_priority: method to set the priority of a #GESTimelineElement
* @ripple: method to ripple an object
* @ripple_end: method to ripple an object on its #GES_EDGE_END edge
* @roll_start: method to roll an object on its #GES_EDGE_START edge
* @roll_end: method to roll an object on its #GES_EDGE_END edge
* @trim: method to trim an object
* @deep_copy: Copy the children properties of @self into @copy
*
* The GESTimelineElement base class. Subclasses should override at least
* @set_start @set_inpoint @set_duration @ripple @ripple_end @roll_start
* @roll_end and @trim
*/
struct _GESTimelineElementClass
{
GInitiallyUnownedClass parent_class;
gboolean (*set_start) (GESTimelineElement * self, GstClockTime start);
gboolean (*set_inpoint) (GESTimelineElement * self, GstClockTime inpoint);
gboolean (*set_duration) (GESTimelineElement * self, GstClockTime duration);
gboolean (*set_max_duration) (GESTimelineElement * self, GstClockTime maxduration);
gboolean (*set_priority) (GESTimelineElement * self, guint32 priority);
gboolean (*ripple) (GESTimelineElement *self, guint64 start);
gboolean (*ripple_end) (GESTimelineElement *self, guint64 end);
gboolean (*roll_start) (GESTimelineElement *self, guint64 start);
gboolean (*roll_end) (GESTimelineElement *self, guint64 end);
gboolean (*trim) (GESTimelineElement *self, guint64 start);
void (*deep_copy) (GESTimelineElement *self, GESTimelineElement *copy);
/* Padding for API extension */
gpointer _ges_reserved[GES_PADDING_LARGE];
};
/**
* GESTimelineElement:
* @start: position (in time) of the object
* @inpoint: Position in the media from which the object should be used
* @duration: duration of the object to be used
* @maxduration: The maximum duration the object can have
* @priority: priority of the object in the layer (0:top priority)
*
* Those filed can be accessed from outside but in no case should
* be changed from there. Subclasses can write them but should make
* sure to properly call g_object_notify.
*/
struct _GESTimelineElement
{
GInitiallyUnowned parent_instance;
/*< read only >*/
GESTimelineElement *parent;
GESAsset *asset;
GstClockTime start;
GstClockTime inpoint;
GstClockTime duration;
GstClockTime maxduration;
guint32 priority;
/*< private >*/
GESTimelineElementPrivate *priv;
/* Padding for API extension */
gpointer _ges_reserved[GES_PADDING_LARGE];
};
GType ges_timeline_element_get_type (void) G_GNUC_CONST;
GESTimelineElement * ges_timeline_element_get_parent (GESTimelineElement * self);
gboolean ges_timeline_element_set_parent (GESTimelineElement *self, GESTimelineElement *parent);
void ges_timeline_element_set_start (GESTimelineElement *self, GstClockTime start);
void ges_timeline_element_set_inpoint (GESTimelineElement *self, GstClockTime inpoint);
void ges_timeline_element_set_duration (GESTimelineElement *self, GstClockTime duration);
void ges_timeline_element_set_max_duration (GESTimelineElement *self, GstClockTime duration);
void ges_timeline_element_set_priority (GESTimelineElement *self, guint32 priority);
gboolean ges_timeline_element_ripple (GESTimelineElement *self, GstClockTime start);
gboolean ges_timeline_element_ripple_end (GESTimelineElement *self, GstClockTime end);
gboolean ges_timeline_element_roll_start (GESTimelineElement *self, GstClockTime start);
gboolean ges_timeline_element_roll_end (GESTimelineElement *self, GstClockTime end);
gboolean ges_timeline_element_trim (GESTimelineElement *self, GstClockTime start);
GESTimelineElement * ges_timeline_element_copy (GESTimelineElement *self, gboolean deep);
G_END_DECLS
#endif /* _GES_TIMELINE_ELEMENT_H_ */