gstreamer/subprojects/gst-editing-services/ges/ges-video-source.h

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/* GStreamer Editing Services
* Copyright (C) 2009 Edward Hervey <edward.hervey@collabora.co.uk>
* 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., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
2020-03-17 21:13:51 +00:00
#pragma once
#include <glib-object.h>
#include <gst/gst.h>
#include <ges/ges-types.h>
#include <ges/ges-track-element.h>
#include <ges/ges-source.h>
G_BEGIN_DECLS
#define GES_TYPE_VIDEO_SOURCE ges_video_source_get_type()
GES_DECLARE_TYPE(VideoSource, video_source, VIDEO_SOURCE);
/**
* GESVideoSource:
*
* Base class for video sources
*/
struct _GESVideoSource {
/*< private >*/
GESSource parent;
GESVideoSourcePrivate *priv;
/* Padding for API extension */
gpointer _ges_reserved[GES_PADDING];
};
/**
* GESVideoSourceClass:
* @create_source: method to return the GstElement to put in the source topbin.
* Other elements will be queued, like a videoscale.
* In the case of a VideoUriSource, for example, the subclass will return a decodebin,
* and we will append a videoscale.
*/
struct _GESVideoSourceClass {
/*< private >*/
GESSourceClass parent_class;
/*< public >*/
/**
* GESVideoSource::create_element:
* @object: The #GESTrackElement
*
* Returns: (transfer floating): the #GstElement that the underlying nleobject
* controls.
*
* Deprecated: 1.20: Use #GESSourceClass::create_element instead.
*/
GstElement* (*create_source) (GESTrackElement * object);
/*< private >*/
/* Padding for API extension */
union {
gpointer _ges_reserved[GES_PADDING];
struct {
gboolean disable_scale_in_compositor;
gboolean (*needs_converters)(GESVideoSource *self);
gboolean (*get_natural_size)(GESVideoSource* self, gint* width, gint* height);
gboolean (*create_filters)(GESVideoSource *self, GPtrArray *filters, gboolean needs_converters);
} abi;
} ABI;
};
GES_API
gboolean ges_video_source_get_natural_size(GESVideoSource* self, gint* width, gint* height);
G_END_DECLS