gstreamer/gst-libs/gst/vaapi/gstvaapisubpicture.h

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/*
* gstvaapisubpicture.h - VA subpicture abstraction
*
* Copyright (C) 2010-2011 Splitted-Desktop Systems
* Copyright (C) 2011 Intel Corporation
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*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License
* as published by the Free Software Foundation; either version 2.1
* of the License, or (at your option) any later version.
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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
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
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*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free
* Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301 USA
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*/
#ifndef GST_VAAPI_SUBPICTURE_H
#define GST_VAAPI_SUBPICTURE_H
#include <gst/vaapi/gstvaapiobject.h>
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#include <gst/vaapi/gstvaapidisplay.h>
#include <gst/vaapi/gstvaapiimage.h>
#include <gst/video/video-overlay-composition.h>
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G_BEGIN_DECLS
#define GST_VAAPI_TYPE_SUBPICTURE \
(gst_vaapi_subpicture_get_type())
#define GST_VAAPI_SUBPICTURE(obj) \
(G_TYPE_CHECK_INSTANCE_CAST((obj), \
GST_VAAPI_TYPE_SUBPICTURE, \
GstVaapiSubpicture))
#define GST_VAAPI_SUBPICTURE_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST((klass), \
GST_VAAPI_TYPE_SUBPICTURE, \
GstVaapiSubpictureClass))
#define GST_VAAPI_IS_SUBPICTURE(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE((obj), GST_VAAPI_TYPE_SUBPICTURE))
#define GST_VAAPI_IS_SUBPICTURE_CLASS(klass) \
(G_TYPE_CHECK_CLASS_TYPE((klass), GST_VAAPI_TYPE_SUBPICTURE))
#define GST_VAAPI_SUBPICTURE_GET_CLASS(obj) \
(G_TYPE_INSTANCE_GET_CLASS((obj), \
GST_VAAPI_TYPE_SUBPICTURE, \
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GstVaapiSubpictureClass))
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typedef struct _GstVaapiSubpicture GstVaapiSubpicture;
typedef struct _GstVaapiSubpicturePrivate GstVaapiSubpicturePrivate;
typedef struct _GstVaapiSubpictureClass GstVaapiSubpictureClass;
/**
* GstVaapiSubpictureFlags:
* @GST_VAAPI_SUBPICTURE_FLAG_PREMULTIPLIED_ALPHA:
* subpicture has RGB pixels with pre-multiplied alpha
* @GST_VAAPI_SUBPICTURE_FLAG_GLOBAL_ALPHA:
* subpicture needs to be blended with some global-alpha value at
* rendering time
*
* The set of all subpicture rendering flags for #GstVaapiSubpicture.
*/
typedef enum {
GST_VAAPI_SUBPICTURE_FLAG_PREMULTIPLIED_ALPHA = (1 << 0),
GST_VAAPI_SUBPICTURE_FLAG_GLOBAL_ALPHA = (1 << 1),
} GstVaapiSubpictureFlags;
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/**
* GstVaapiSubpicture:
*
* A VA subpicture wrapper
*/
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struct _GstVaapiSubpicture {
/*< private >*/
GstVaapiObject parent_instance;
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GstVaapiSubpicturePrivate *priv;
};
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/**
* GstVaapiSubpictureClass:
*
* A VA subpicture wrapper class
*/
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struct _GstVaapiSubpictureClass {
/*< private >*/
GstVaapiObjectClass parent_class;
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};
GType
gst_vaapi_subpicture_get_type(void) G_GNUC_CONST;
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GstVaapiSubpicture *
gst_vaapi_subpicture_new(GstVaapiImage *image, guint flags);
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GstVaapiSubpicture *
gst_vaapi_subpicture_new_from_overlay_rectangle(
GstVaapiDisplay *display,
GstVideoOverlayRectangle *rect
);
GstVaapiID
gst_vaapi_subpicture_get_id(GstVaapiSubpicture *subpicture);
guint
gst_vaapi_subpicture_get_flags(GstVaapiSubpicture *subpicture);
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GstVaapiImage *
gst_vaapi_subpicture_get_image(GstVaapiSubpicture *subpicture);
void
gst_vaapi_subpicture_set_image(
GstVaapiSubpicture *subpicture,
GstVaapiImage *image
);
gfloat
gst_vaapi_subpicture_get_global_alpha(GstVaapiSubpicture *subpicture);
gboolean
gst_vaapi_subpicture_set_global_alpha(GstVaapiSubpicture *subpicture,
gfloat global_alpha);
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G_END_DECLS
#endif /* GST_VAAPI_SUBPICTURE_H */