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gstreamer/subprojects/gst-plugins-base/gst/compositor/blend.h
Seungha Yang 56d47f641f compositor: Add support for all formats 
For formats which we don't have fast-path implementation, compositor
will convert it to common unpack formats (AYUV, ARGB, AYUV64 and ARGB64)
then blending will happen using the intermediate formats.
Finally blended image will be converted back to the selected output format
if required.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1486>
2022-07-29 13:29:39 +00:00

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/*
* Copyright (C) 2009 Sebastian Dröge <sebastian.droege@collabora.co.uk>
*
* 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.
*/
#ifndef __BLEND_H__
#define __BLEND_H__
#include <gst/gst.h>
#include <gst/video/video.h>
/**
* GstCompositorBlendMode:
* @COMPOSITOR_BLEND_MODE_SOURCE: Copy source
* @COMPOSITOR_BLEND_MODE_OVER: Normal blending
* @COMPOSITOR_BLEND_MODE_ADD: Alphas are simply added,
*
* The different modes compositor can use for blending.
*/
typedef enum
{
COMPOSITOR_BLEND_MODE_SOURCE,
COMPOSITOR_BLEND_MODE_OVER,
COMPOSITOR_BLEND_MODE_ADD,
} GstCompositorBlendMode;
/*
* @srcframe: source #GstVideoFrame
* @xpos: horizontal start position of @srcframe, leftmost pixel line.
* @ypos: vertical start position of @srcframe, topmost pixel line.
* @gdouble: src_alpha, alpha factor applied to @srcframe
* @destframe: destination #GstVideoFrame
* @dst_y_start: start position of where to write into @destframe. Used for splitting work across multiple sequences.
* @dst_y_end: end position of where to write into @destframe. Used for splitting work across multiple sequences.
*/
typedef void (*BlendFunction) (GstVideoFrame *srcframe, gint xpos, gint ypos, gdouble src_alpha, GstVideoFrame * destframe,
gint dst_y_start, gint dst_y_end, GstCompositorBlendMode mode);
typedef void (*FillCheckerFunction) (GstVideoFrame * frame, guint y_start, guint y_end);
typedef void (*FillColorFunction) (GstVideoFrame * frame, guint y_start, guint y_end, gint c1, gint c2, gint c3);
extern BlendFunction gst_compositor_blend_argb;
extern BlendFunction gst_compositor_blend_bgra;
#define gst_compositor_blend_ayuv gst_compositor_blend_argb
#define gst_compositor_blend_vuya gst_compositor_blend_bgra
#define gst_compositor_blend_abgr gst_compositor_blend_argb
#define gst_compositor_blend_rgba gst_compositor_blend_bgra
extern BlendFunction gst_compositor_overlay_argb;
extern BlendFunction gst_compositor_overlay_bgra;
#define gst_compositor_overlay_ayuv gst_compositor_overlay_argb
#define gst_compositor_overlay_vuya gst_compositor_overlay_bgra
#define gst_compositor_overlay_abgr gst_compositor_overlay_argb
#define gst_compositor_overlay_rgba gst_compositor_overlay_bgra
extern BlendFunction gst_compositor_overlay_argb64;
#define gst_compositor_overlay_ayuv64 gst_compositor_overlay_argb64;
extern BlendFunction gst_compositor_blend_i420;
#define gst_compositor_blend_yv12 gst_compositor_blend_i420
extern BlendFunction gst_compositor_blend_nv12;
extern BlendFunction gst_compositor_blend_nv21;
extern BlendFunction gst_compositor_blend_y41b;
extern BlendFunction gst_compositor_blend_y42b;
extern BlendFunction gst_compositor_blend_y444;
extern BlendFunction gst_compositor_blend_rgb;
#define gst_compositor_blend_bgr gst_compositor_blend_rgb
extern BlendFunction gst_compositor_blend_rgbx;
#define gst_compositor_blend_bgrx gst_compositor_blend_rgbx
#define gst_compositor_blend_xrgb gst_compositor_blend_rgbx
#define gst_compositor_blend_xbgr gst_compositor_blend_rgbx
extern BlendFunction gst_compositor_blend_yuy2;
#define gst_compositor_blend_uyvy gst_compositor_blend_yuy2;
#define gst_compositor_blend_yvyu gst_compositor_blend_yuy2;
extern BlendFunction gst_compositor_blend_i420_10le;
extern BlendFunction gst_compositor_blend_i420_10be;
extern BlendFunction gst_compositor_blend_i420_12le;
extern BlendFunction gst_compositor_blend_i420_12be;
extern BlendFunction gst_compositor_blend_i422_10le;
extern BlendFunction gst_compositor_blend_i422_10be;
extern BlendFunction gst_compositor_blend_i422_12le;
extern BlendFunction gst_compositor_blend_i422_12be;
extern BlendFunction gst_compositor_blend_y444_10le;
extern BlendFunction gst_compositor_blend_y444_10be;
extern BlendFunction gst_compositor_blend_y444_12le;
extern BlendFunction gst_compositor_blend_y444_12be;
extern BlendFunction gst_compositor_blend_y444_16le;
extern BlendFunction gst_compositor_blend_y444_16be;
extern BlendFunction gst_compositor_blend_argb64;
#define gst_compositor_blend_ayuv64 gst_compositor_blend_argb64;
extern FillCheckerFunction gst_compositor_fill_checker_argb;
#define gst_compositor_fill_checker_abgr gst_compositor_fill_checker_argb
extern FillCheckerFunction gst_compositor_fill_checker_bgra;
#define gst_compositor_fill_checker_rgba gst_compositor_fill_checker_bgra
extern FillCheckerFunction gst_compositor_fill_checker_ayuv;
extern FillCheckerFunction gst_compositor_fill_checker_vuya;
extern FillCheckerFunction gst_compositor_fill_checker_i420;
#define gst_compositor_fill_checker_yv12 gst_compositor_fill_checker_i420
extern FillCheckerFunction gst_compositor_fill_checker_nv12;
extern FillCheckerFunction gst_compositor_fill_checker_nv21;
extern FillCheckerFunction gst_compositor_fill_checker_y41b;
extern FillCheckerFunction gst_compositor_fill_checker_y42b;
extern FillCheckerFunction gst_compositor_fill_checker_y444;
extern FillCheckerFunction gst_compositor_fill_checker_rgb;
#define gst_compositor_fill_checker_bgr gst_compositor_fill_checker_rgb
extern FillCheckerFunction gst_compositor_fill_checker_rgbx;
#define gst_compositor_fill_checker_bgrx gst_compositor_fill_checker_rgbx
extern FillCheckerFunction gst_compositor_fill_checker_xrgb;
#define gst_compositor_fill_checker_xbgr gst_compositor_fill_checker_xrgb
extern FillCheckerFunction gst_compositor_fill_checker_yuy2;
#define gst_compositor_fill_checker_yvyu gst_compositor_fill_checker_yuy2;
extern FillCheckerFunction gst_compositor_fill_checker_uyvy;
extern FillCheckerFunction gst_compositor_fill_checker_i420_10le;
#define gst_compositor_fill_checker_i422_10le gst_compositor_fill_checker_i420_10le
#define gst_compositor_fill_checker_y444_10le gst_compositor_fill_checker_i420_10le
extern FillCheckerFunction gst_compositor_fill_checker_i420_10be;
#define gst_compositor_fill_checker_i422_10be gst_compositor_fill_checker_i420_10be
#define gst_compositor_fill_checker_y444_10be gst_compositor_fill_checker_i420_10be
extern FillCheckerFunction gst_compositor_fill_checker_i420_12le;
#define gst_compositor_fill_checker_i422_12le gst_compositor_fill_checker_i420_12le
#define gst_compositor_fill_checker_y444_12le gst_compositor_fill_checker_i420_12le
extern FillCheckerFunction gst_compositor_fill_checker_i420_12be;
#define gst_compositor_fill_checker_i422_12be gst_compositor_fill_checker_i420_12be
#define gst_compositor_fill_checker_y444_12be gst_compositor_fill_checker_i420_12be
extern FillCheckerFunction gst_compositor_fill_checker_y444_16le;
extern FillCheckerFunction gst_compositor_fill_checker_y444_16be;
extern FillCheckerFunction gst_compositor_fill_checker_argb64;
extern FillCheckerFunction gst_compositor_fill_checker_ayuv64;
extern FillColorFunction gst_compositor_fill_color_argb;
extern FillColorFunction gst_compositor_fill_color_abgr;
extern FillColorFunction gst_compositor_fill_color_bgra;
extern FillColorFunction gst_compositor_fill_color_rgba;
extern FillColorFunction gst_compositor_fill_color_ayuv;
extern FillColorFunction gst_compositor_fill_color_vuya;
extern FillColorFunction gst_compositor_fill_color_i420;
extern FillColorFunction gst_compositor_fill_color_yv12;
extern FillColorFunction gst_compositor_fill_color_nv12;
#define gst_compositor_fill_color_nv21 gst_compositor_fill_color_nv12;
extern FillColorFunction gst_compositor_fill_color_y41b;
extern FillColorFunction gst_compositor_fill_color_y42b;
extern FillColorFunction gst_compositor_fill_color_y444;
extern FillColorFunction gst_compositor_fill_color_rgb;
extern FillColorFunction gst_compositor_fill_color_bgr;
extern FillColorFunction gst_compositor_fill_color_xrgb;
extern FillColorFunction gst_compositor_fill_color_xbgr;
extern FillColorFunction gst_compositor_fill_color_rgbx;
extern FillColorFunction gst_compositor_fill_color_bgrx;
extern FillColorFunction gst_compositor_fill_color_yuy2;
extern FillColorFunction gst_compositor_fill_color_yvyu;
extern FillColorFunction gst_compositor_fill_color_uyvy;
extern FillColorFunction gst_compositor_fill_color_i420_10le;
#define gst_compositor_fill_color_i422_10le gst_compositor_fill_color_i420_10le
#define gst_compositor_fill_color_y444_10le gst_compositor_fill_color_i420_10le
extern FillColorFunction gst_compositor_fill_color_i420_10be;
#define gst_compositor_fill_color_i422_10be gst_compositor_fill_color_i420_10be
#define gst_compositor_fill_color_y444_10be gst_compositor_fill_color_i420_10be
extern FillColorFunction gst_compositor_fill_color_i420_12le;
#define gst_compositor_fill_color_i422_12le gst_compositor_fill_color_i420_12le
#define gst_compositor_fill_color_y444_12le gst_compositor_fill_color_i420_12le
extern FillColorFunction gst_compositor_fill_color_i420_12be;
#define gst_compositor_fill_color_i422_12be gst_compositor_fill_color_i420_12be
#define gst_compositor_fill_color_y444_12be gst_compositor_fill_color_i420_12be
extern FillColorFunction gst_compositor_fill_color_y444_16le;
extern FillColorFunction gst_compositor_fill_color_y444_16be;
extern FillColorFunction gst_compositor_fill_color_argb64;
#define gst_compositor_fill_color_ayuv64 gst_compositor_fill_color_argb64;
void gst_compositor_init_blend (void);
#endif /* __BLEND_H__ */
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