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231 lines
9.3 KiB
C
231 lines
9.3 KiB
C
/* GStreamer Editing Services
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* Copyright (C) 2009 Edward Hervey <edward.hervey@collabora.co.uk>
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* 2009 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., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#ifndef _GES_TRACK_ELEMENT
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#define _GES_TRACK_ELEMENT
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#include <glib-object.h>
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#include <gst/gst.h>
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#include <ges/ges-types.h>
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#include <ges/ges-clip.h>
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#include <ges/ges-track.h>
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#include <gst/controller/gstdirectcontrolbinding.h>
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#include <gst/controller/gstinterpolationcontrolsource.h>
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G_BEGIN_DECLS
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#define GES_TYPE_TRACK_ELEMENT ges_track_element_get_type()
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#define GES_TRACK_ELEMENT(obj) \
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(G_TYPE_CHECK_INSTANCE_CAST ((obj), GES_TYPE_TRACK_ELEMENT, GESTrackElement))
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#define GES_TRACK_ELEMENT_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_CAST ((klass), GES_TYPE_TRACK_ELEMENT, GESTrackElementClass))
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#define GES_IS_TRACK_ELEMENT(obj) \
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(G_TYPE_CHECK_INSTANCE_TYPE ((obj), GES_TYPE_TRACK_ELEMENT))
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#define GES_IS_TRACK_ELEMENT_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_TYPE ((klass), GES_TYPE_TRACK_ELEMENT))
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#define GES_TRACK_ELEMENT_GET_CLASS(obj) \
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(G_TYPE_INSTANCE_GET_CLASS ((obj), GES_TYPE_TRACK_ELEMENT, GESTrackElementClass))
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typedef struct _GESTrackElementPrivate GESTrackElementPrivate;
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/**
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* GESTrackElement:
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*
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* The GESTrackElement base class.
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*/
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struct _GESTrackElement {
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GESTimelineElement parent;
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/*< private >*/
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gboolean active;
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GESTrackElementPrivate *priv;
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GESAsset *asset;
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/* Padding for API extension */
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gpointer _ges_reserved[GES_PADDING_LARGE];
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};
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/**
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* GESTrackElementClass:
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* @nleobject_factorytype: name of the GNonLin GStElementFactory type to use.
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* @create_gnl_object: method to create the GNonLin container object.
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* @create_element: method to return the GstElement to put in the nleobject.
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* @active_changed: active property of nleobject has changed
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* @list_children_properties: method to get children properties that user could
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* like to configure.
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* The default implementation will create an object
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* of type @nleobject_factorytype and call
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* @create_element.
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* DeprecatedUse: GESTimelineElement.list_children_properties instead
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* @lookup_child: method letting subclasses look for a child, overriding the
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* simple standard behaviour. This vmethod can be used for example
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* in the case where you want the name of a child property to be
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* 'overriden'. A good example of where it is usefull is the
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* GESTitleSource where we have a videotestsrc which has a
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* 'foreground-color' property that is used in the TitleSource to
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* set the background color of the title, in that case, this method
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* has been overriden so that we tweak the name passed has parametter
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* to rename "background" to "foreground-backend" making our API
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* understandable.
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* Deprecated: use GESTimelineElement.lookup_child instead
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*
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* Subclasses can override the @create_gnl_object method to override what type
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* of GNonLin object will be created.
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*/
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struct _GESTrackElementClass {
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/*< private >*/
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GESTimelineElementClass parent_class;
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/*< public >*/
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/* virtual methods for subclasses */
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const gchar *nleobject_factorytype;
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GstElement* (*create_gnl_object) (GESTrackElement * object);
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GstElement* (*create_element) (GESTrackElement * object);
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void (*active_changed) (GESTrackElement *object, gboolean active);
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/*< private >*/
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/* signals (currently unused) */
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void (*changed) (GESTrackElement * object);
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/*< public >*/
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/* virtual methods for subclasses */
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GParamSpec** (*list_children_properties) (GESTrackElement * object,
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guint *n_properties);
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gboolean (*lookup_child) (GESTrackElement *object,
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const gchar *prop_name,
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GstElement **element,
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GParamSpec **pspec);
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/*< private >*/
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/* Padding for API extension */
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gpointer _ges_reserved[GES_PADDING_LARGE];
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};
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GES_API
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GType ges_track_element_get_type (void);
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GES_API
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GESTrack* ges_track_element_get_track (GESTrackElement * object);
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GES_API
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GESTrackType ges_track_element_get_track_type (GESTrackElement * object);
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GES_API
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void ges_track_element_set_track_type (GESTrackElement * object,
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GESTrackType type);
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GES_API
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GstElement * ges_track_element_get_nleobject (GESTrackElement * object);
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GES_API
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GstElement * ges_track_element_get_gnlobject (GESTrackElement * object);
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GES_API
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GstElement * ges_track_element_get_element (GESTrackElement * object);
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GES_API
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gboolean ges_track_element_set_active (GESTrackElement * object,
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gboolean active);
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GES_API
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gboolean ges_track_element_is_active (GESTrackElement * object);
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GES_API GParamSpec **
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ges_track_element_list_children_properties (GESTrackElement *object,
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guint *n_properties);
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GES_API
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gboolean ges_track_element_lookup_child (GESTrackElement *object,
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const gchar *prop_name,
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GstElement **element,
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GParamSpec **pspec);
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GES_API void
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ges_track_element_get_child_property_by_pspec (GESTrackElement * object,
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GParamSpec * pspec,
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GValue * value);
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GES_API void
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ges_track_element_get_child_property_valist (GESTrackElement * object,
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const gchar * first_property_name,
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va_list var_args);
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GES_API
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void ges_track_element_get_child_properties (GESTrackElement *object,
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const gchar * first_property_name,
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...) G_GNUC_NULL_TERMINATED;
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GES_API void
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ges_track_element_set_child_property_valist (GESTrackElement * object,
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const gchar * first_property_name,
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va_list var_args);
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GES_API void
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ges_track_element_set_child_property_by_pspec (GESTrackElement * object,
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GParamSpec * pspec,
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GValue * value);
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GES_API
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void ges_track_element_set_child_properties (GESTrackElement * object,
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const gchar * first_property_name,
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...) G_GNUC_NULL_TERMINATED;
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GES_API
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gboolean ges_track_element_set_child_property (GESTrackElement *object,
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const gchar *property_name,
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GValue * value);
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GES_API
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gboolean ges_track_element_get_child_property (GESTrackElement *object,
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const gchar *property_name,
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GValue * value);
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GES_API gboolean
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ges_track_element_edit (GESTrackElement * object,
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GList *layers, GESEditMode mode,
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GESEdge edge, guint64 position);
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GES_API gboolean
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ges_track_element_set_control_source (GESTrackElement *object,
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GstControlSource *source,
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const gchar *property_name,
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const gchar *binding_type);
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GES_API GstControlBinding *
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ges_track_element_get_control_binding (GESTrackElement *object,
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const gchar *property_name);
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GES_API void
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ges_track_element_add_children_props (GESTrackElement *self,
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GstElement *element,
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const gchar ** wanted_categories,
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const gchar **blacklist,
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const gchar **whitelist);
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GES_API GHashTable *
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ges_track_element_get_all_control_bindings (GESTrackElement * trackelement);
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GES_API gboolean
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ges_track_element_remove_control_binding (GESTrackElement * object,
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const gchar * property_name);
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G_END_DECLS
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#endif /* _GES_TRACK_ELEMENT */
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