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1cd4a8fc04
Add the necessary helpers in GstVaapiDisplay to determine whether subpictures with global alpha are supported or not. Also add accessors in GstVaapiSubpicture to address this feature. Signed-off-by: Gwenole Beauchesne <gwenole.beauchesne@intel.com>
134 lines
4.1 KiB
C
134 lines
4.1 KiB
C
/*
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* gstvaapisubpicture.h - VA subpicture abstraction
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*
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* Copyright (C) 2010-2011 Splitted-Desktop Systems
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* Copyright (C) 2011 Intel 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 Lesser General Public License
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* as published by the Free Software Foundation; either version 2.1
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* 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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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free
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* Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301 USA
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*/
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#ifndef GST_VAAPI_SUBPICTURE_H
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#define GST_VAAPI_SUBPICTURE_H
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#include <gst/vaapi/gstvaapiobject.h>
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#include <gst/vaapi/gstvaapidisplay.h>
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#include <gst/vaapi/gstvaapiimage.h>
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#include <gst/video/video-overlay-composition.h>
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G_BEGIN_DECLS
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#define GST_VAAPI_TYPE_SUBPICTURE \
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(gst_vaapi_subpicture_get_type())
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#define GST_VAAPI_SUBPICTURE(obj) \
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(G_TYPE_CHECK_INSTANCE_CAST((obj), \
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GST_VAAPI_TYPE_SUBPICTURE, \
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GstVaapiSubpicture))
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#define GST_VAAPI_SUBPICTURE_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_CAST((klass), \
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GST_VAAPI_TYPE_SUBPICTURE, \
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GstVaapiSubpictureClass))
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#define GST_VAAPI_IS_SUBPICTURE(obj) \
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(G_TYPE_CHECK_INSTANCE_TYPE((obj), GST_VAAPI_TYPE_SUBPICTURE))
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#define GST_VAAPI_IS_SUBPICTURE_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_TYPE((klass), GST_VAAPI_TYPE_SUBPICTURE))
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#define GST_VAAPI_SUBPICTURE_GET_CLASS(obj) \
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(G_TYPE_INSTANCE_GET_CLASS((obj), \
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GST_VAAPI_TYPE_SUBPICTURE, \
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GstVaapiSubpictureClass))
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typedef struct _GstVaapiSubpicture GstVaapiSubpicture;
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typedef struct _GstVaapiSubpicturePrivate GstVaapiSubpicturePrivate;
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typedef struct _GstVaapiSubpictureClass GstVaapiSubpictureClass;
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/**
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* GstVaapiSubpictureFlags:
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* @GST_VAAPI_SUBPICTURE_FLAG_PREMULTIPLIED_ALPHA:
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* subpicture has RGB pixels with pre-multiplied alpha
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* @GST_VAAPI_SUBPICTURE_FLAG_GLOBAL_ALPHA:
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* subpicture needs to be blended with some global-alpha value at
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* rendering time
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*
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* The set of all subpicture rendering flags for #GstVaapiSubpicture.
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*/
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typedef enum {
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GST_VAAPI_SUBPICTURE_FLAG_PREMULTIPLIED_ALPHA = (1 << 0),
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GST_VAAPI_SUBPICTURE_FLAG_GLOBAL_ALPHA = (1 << 1),
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} GstVaapiSubpictureFlags;
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/**
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* GstVaapiSubpicture:
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*
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* A VA subpicture wrapper
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*/
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struct _GstVaapiSubpicture {
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/*< private >*/
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GstVaapiObject parent_instance;
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GstVaapiSubpicturePrivate *priv;
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};
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/**
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* GstVaapiSubpictureClass:
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*
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* A VA subpicture wrapper class
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*/
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struct _GstVaapiSubpictureClass {
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/*< private >*/
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GstVaapiObjectClass parent_class;
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};
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GType
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gst_vaapi_subpicture_get_type(void) G_GNUC_CONST;
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GstVaapiSubpicture *
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gst_vaapi_subpicture_new(GstVaapiImage *image, guint flags);
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GstVaapiSubpicture *
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gst_vaapi_subpicture_new_from_overlay_rectangle(
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GstVaapiDisplay *display,
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GstVideoOverlayRectangle *rect
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);
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GstVaapiID
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gst_vaapi_subpicture_get_id(GstVaapiSubpicture *subpicture);
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guint
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gst_vaapi_subpicture_get_flags(GstVaapiSubpicture *subpicture);
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GstVaapiImage *
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gst_vaapi_subpicture_get_image(GstVaapiSubpicture *subpicture);
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void
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gst_vaapi_subpicture_set_image(
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GstVaapiSubpicture *subpicture,
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GstVaapiImage *image
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);
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gfloat
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gst_vaapi_subpicture_get_global_alpha(GstVaapiSubpicture *subpicture);
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gboolean
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gst_vaapi_subpicture_set_global_alpha(GstVaapiSubpicture *subpicture,
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gfloat global_alpha);
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G_END_DECLS
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#endif /* GST_VAAPI_SUBPICTURE_H */
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