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

107 lines
3.3 KiB
C

/*
* gstvaapisubpicture.h - VA subpicture abstraction
*
* Copyright (C) 2010-2011 Splitted-Desktop Systems
* Author: Gwenole Beauchesne <gwenole.beauchesne@splitted-desktop.com>
* Copyright (C) 2011-2013 Intel Corporation
* Author: Gwenole Beauchesne <gwenole.beauchesne@intel.com>
*
* 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.
*
* 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
* Lesser General Public License for more details.
*
* 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
*/
#ifndef GST_VAAPI_SUBPICTURE_H
#define GST_VAAPI_SUBPICTURE_H
#include <gst/vaapi/gstvaapidisplay.h>
#include <gst/vaapi/gstvaapiimage.h>
#include <gst/video/video-overlay-composition.h>
G_BEGIN_DECLS
#define GST_VAAPI_SUBPICTURE(obj) \
((GstVaapiSubpicture *)(obj))
typedef struct _GstVaapiSubpicture GstVaapiSubpicture;
/**
* 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;
#define GST_TYPE_VAAPI_SUBPICTURE (gst_vaapi_subpicture_get_type ())
#define GST_VAAPI_SUBPICTURE_ID(subpicture) (gst_vaapi_subpicture_get_id (subpicture))
GType
gst_vaapi_subpicture_get_type (void) G_GNUC_CONST;
/**
* gst_vaapi_subpicture_unref: (skip)
* @subpicture: (transfer full): a #GstVaapiSubpicture.
*
* Decreases the refcount of the subpicture. If the refcount reaches 0, the
* subpicture will be freed.
*/
static inline void
gst_vaapi_subpicture_unref (GstVaapiSubpicture *subpicture)
{
gst_mini_object_unref (GST_MINI_OBJECT_CAST (subpicture));
}
GstVaapiSubpicture *
gst_vaapi_subpicture_new(GstVaapiImage *image, guint flags);
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);
GstVaapiImage *
gst_vaapi_subpicture_get_image(GstVaapiSubpicture *subpicture);
gboolean
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);
G_DEFINE_AUTOPTR_CLEANUP_FUNC(GstVaapiSubpicture, gst_vaapi_subpicture_unref)
G_END_DECLS
#endif /* GST_VAAPI_SUBPICTURE_H */