/* GStreamer Editing Services * Copyright (C) 2009 Edward Hervey * 2009 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_TIMELINE_OBJECT #define _GES_TIMELINE_OBJECT #include #include #include G_BEGIN_DECLS #define GES_TYPE_TIMELINE_OBJECT ges_timeline_object_get_type() #define GES_TIMELINE_OBJECT(obj) \ (G_TYPE_CHECK_INSTANCE_CAST ((obj), GES_TYPE_TIMELINE_OBJECT, GESTimelineObject)) #define GES_TIMELINE_OBJECT_CLASS(klass) \ (G_TYPE_CHECK_CLASS_CAST ((klass), GES_TYPE_TIMELINE_OBJECT, GESTimelineObjectClass)) #define GES_IS_TIMELINE_OBJECT(obj) \ (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GES_TYPE_TIMELINE_OBJECT)) #define GES_IS_TIMELINE_OBJECT_CLASS(klass) \ (G_TYPE_CHECK_CLASS_TYPE ((klass), GES_TYPE_TIMELINE_OBJECT)) #define GES_TIMELINE_OBJECT_GET_CLASS(obj) \ (G_TYPE_INSTANCE_GET_CLASS ((obj), GES_TYPE_TIMELINE_OBJECT, GESTimelineObjectClass)) typedef struct _GESTimelineObjectPrivate GESTimelineObjectPrivate; /** * GESFillTrackObjectFunc: * @object: the #GESTimelineObject controlling the track object * @trobject: the #GESTrackObject * @gnlobj: the GNonLin object that needs to be filled. * * A function that will be called when the GNonLin object of a corresponding * track object needs to be filled. * * The implementer of this function shall add the proper #GstElement to @gnlobj * using gst_bin_add(). * * Returns: TRUE if the implementer succesfully filled the @gnlobj, else #FALSE. */ typedef gboolean (*GESFillTrackObjectFunc) (GESTimelineObject * object, GESTrackObject * trobject, GstElement * gnlobj); /** * GESCreateTrackObjectFunc: * @object: a #GESTimelineObject * @track: a #GESTrack * * Creates the 'primary' track object for this @object. * * Subclasses should implement this method if they only provide a * single #GESTrackObject per track. * * If the subclass needs to create more than one #GESTrackObject for a * given track, then it should implement the 'create_track_objects' * method instead. * * The implementer of this function shall return the proper #GESTrackObject * that should be controlled by @object for the given @track. * * The returned #GESTrackObject will be automatically added to the list * of objects controlled by the #GESTimelineObject. * * Returns: the #GESTrackObject to be used, or %NULL if it can't provide one * for the given @track. */ typedef GESTrackObject* (*GESCreateTrackObjectFunc) (GESTimelineObject * object, GESTrack * track); /** * GESCreateTrackObjectsFunc: * @object: a #GESTimelineObject * @track: a #GESTrack * * Create all track objects this object handles for this type of track. * * Subclasses should implement this method if they potentially need to * return more than one #GESTrackObject(s) for a given #GESTrack. * * For each object created, the subclass must call * ges_timeline_object_add_track_object() with the newly created object * and provided @track. * * Returns: %TRUE on success %FALSE on failure. */ typedef gboolean (*GESCreateTrackObjectsFunc) (GESTimelineObject * object, GESTrack *track); /** * GES_TIMELINE_OBJECT_START: * @obj: a #GESTimelineObject * * The start position of the object (in nanoseconds). */ #define GES_TIMELINE_OBJECT_START(obj) (((GESTimelineObject*)obj)->start) /** * GES_TIMELINE_OBJECT_INPOINT: * @obj: a #GESTimelineObject * * The in-point of the object (in nanoseconds). */ #define GES_TIMELINE_OBJECT_INPOINT(obj) (((GESTimelineObject*)obj)->inpoint) /** * GES_TIMELINE_OBJECT_DURATION: * @obj: a #GESTimelineObject * * The duration position of the object (in nanoseconds). */ #define GES_TIMELINE_OBJECT_DURATION(obj) (((GESTimelineObject*)obj)->duration) /** * GES_TIMELINE_OBJECT_PRIORITY: * @obj: a #GESTimelineObject * * The priority of the object. */ #define GES_TIMELINE_OBJECT_PRIORITY(obj) (((GESTimelineObject*)obj)->priority) /** * GES_TIMELINE_OBJECT_HEIGHT: * @obj: a #GESTimelineObject * * The span of priorities this object occupies. */ #define GES_TIMELINE_OBJECT_HEIGHT(obj) (((GESTimelineObject*)obj)->height) /** * GESTimelineObject: * * The #GESTimelineObject base class. */ struct _GESTimelineObject { /*< private >*/ GInitiallyUnowned parent; GESTimelineObjectPrivate *priv; /* We don't add those properties to the priv struct for optimization purposes * start, inpoint, duration and fullduration are in nanoseconds */ guint64 start; /* position (in time) of the object in the layer */ guint64 inpoint; /* in-point */ guint64 duration; /* duration of the object used in the layer */ guint32 priority; /* priority of the object in the layer (0:top priority) */ guint32 height; /* the span of priorities this object needs */ guint64 fullduration; /* Full usable duration of the object (-1: no duration) */ /* Padding for API extension */ gpointer _ges_reserved[GES_PADDING]; }; /** * GESTimelineObjectClass: * @create_track_object: method to create a single #GESTrackObject for a given #GESTrack. * @create_track_objects: method to create multiple #GESTrackObjects for a * #GESTrack. * @fill_track_object: method to fill an associated #GESTrackObject. * @need_fill_track: Set to TRUE if @fill_track_object needs to be called. * * Subclasses can override the @create_track_object and @fill_track_object methods. */ struct _GESTimelineObjectClass { /*< private >*/ GInitiallyUnownedClass parent_class; /*< public >*/ GESCreateTrackObjectFunc create_track_object; GESCreateTrackObjectsFunc create_track_objects; /* FIXME : might need a release_track_object */ GESFillTrackObjectFunc fill_track_object; gboolean need_fill_track; /*< private >*/ /* Padding for API extension */ gpointer _ges_reserved[GES_PADDING]; }; GType ges_timeline_object_get_type (void); void ges_timeline_object_set_start (GESTimelineObject * object, guint64 start); void ges_timeline_object_set_inpoint (GESTimelineObject * object, guint64 inpoint); void ges_timeline_object_set_duration (GESTimelineObject * object, guint64 duration); void ges_timeline_object_set_priority (GESTimelineObject * object, guint priority); void ges_timeline_object_set_layer (GESTimelineObject * object, GESTimelineLayer * layer); GESTrackObject * ges_timeline_object_create_track_object (GESTimelineObject * object, GESTrack * track); gboolean ges_timeline_object_create_track_objects (GESTimelineObject * object, GESTrack * track); gboolean ges_timeline_object_release_track_object (GESTimelineObject * object, GESTrackObject * trackobject); gboolean ges_timeline_object_fill_track_object (GESTimelineObject * object, GESTrackObject * trackobj, GstElement * gnlobj); GESTrackObject * ges_timeline_object_find_track_object (GESTimelineObject * object, GESTrack * track, GType type); GList * ges_timeline_object_get_track_objects (GESTimelineObject *object); GESTimelineLayer * ges_timeline_object_get_layer (GESTimelineObject *object); gboolean ges_timeline_object_add_track_object (GESTimelineObject *object, GESTrackObject *trobj); GList * ges_timeline_object_get_effects (GESTimelineObject *object); gint ges_timeline_object_get_top_effect_position (GESTimelineObject *object, GESTrackOperation *effect); G_END_DECLS #endif /* _GES_TIMELINE_OBJECT */