From 5a079a2d114f96d4847d1ee305d5b7c16eeec50e Mon Sep 17 00:00:00 2001 From: 3gg <3gg@shellblade.net> Date: Sat, 27 Dec 2025 12:03:39 -0800 Subject: Initial commit --- contrib/SDL-3.2.8/src/video/yuv2rgb/yuv_rgb_std.h | 143 ++++++++++++++++++++++ 1 file changed, 143 insertions(+) create mode 100644 contrib/SDL-3.2.8/src/video/yuv2rgb/yuv_rgb_std.h (limited to 'contrib/SDL-3.2.8/src/video/yuv2rgb/yuv_rgb_std.h') diff --git a/contrib/SDL-3.2.8/src/video/yuv2rgb/yuv_rgb_std.h b/contrib/SDL-3.2.8/src/video/yuv2rgb/yuv_rgb_std.h new file mode 100644 index 0000000..c9f856b --- /dev/null +++ b/contrib/SDL-3.2.8/src/video/yuv2rgb/yuv_rgb_std.h @@ -0,0 +1,143 @@ +// Copyright 2016 Adrien Descamps +// Distributed under BSD 3-Clause License + +// Provide optimized functions to convert images from 8bits yuv420 to rgb24 format + +// There are a few slightly different variations of the YCbCr color space with different parameters that +// change the conversion matrix. +// The three most common YCbCr color space, defined by BT.601, BT.709 and JPEG standard are implemented here. +// See the respective standards for details +// The matrix values used are derived from http://www.equasys.de/colorconversion.html + +// YUV420 is stored as three separate channels, with U and V (Cb and Cr) subsampled by a 2 factor +// For conversion from yuv to rgb, no interpolation is done, and the same UV value are used for 4 rgb pixels. This +// is suboptimal for image quality, but by far the fastest method. + +// For all methods, width and height should be even, if not, the last row/column of the result image won't be affected. +// For sse methods, if the width if not divisable by 32, the last (width%32) pixels of each line won't be affected. + +/*#include */ + +#include "yuv_rgb_common.h" + +// yuv to rgb, standard c implementation +void yuv420_rgb565_std( + uint32_t width, uint32_t height, + const uint8_t *y, const uint8_t *u, const uint8_t *v, uint32_t y_stride, uint32_t uv_stride, + uint8_t *rgb, uint32_t rgb_stride, + YCbCrType yuv_type); + +void yuv420_rgb24_std( + uint32_t width, uint32_t height, + const uint8_t *y, const uint8_t *u, const uint8_t *v, uint32_t y_stride, uint32_t uv_stride, + uint8_t *rgb, uint32_t rgb_stride, + YCbCrType yuv_type); + +void yuv420_rgba_std( + uint32_t width, uint32_t height, + const uint8_t *y, const uint8_t *u, const uint8_t *v, uint32_t y_stride, uint32_t uv_stride, + uint8_t *rgb, uint32_t rgb_stride, + YCbCrType yuv_type); + +void yuv420_bgra_std( + uint32_t width, uint32_t height, + const uint8_t *y, const uint8_t *u, const uint8_t *v, uint32_t y_stride, uint32_t uv_stride, + uint8_t *rgb, uint32_t rgb_stride, + YCbCrType yuv_type); + +void yuv420_argb_std( + uint32_t width, uint32_t height, + const uint8_t *y, const uint8_t *u, const uint8_t *v, uint32_t y_stride, uint32_t uv_stride, + uint8_t *rgb, uint32_t rgb_stride, + YCbCrType yuv_type); + +void yuv420_abgr_std( + uint32_t width, uint32_t height, + const uint8_t *y, const uint8_t *u, const uint8_t *v, uint32_t y_stride, uint32_t uv_stride, + uint8_t *rgb, uint32_t rgb_stride, + YCbCrType yuv_type); + +void yuv422_rgb565_std( + uint32_t width, uint32_t height, + const uint8_t *y, const uint8_t *u, const uint8_t *v, uint32_t y_stride, uint32_t uv_stride, + uint8_t *rgb, uint32_t rgb_stride, + YCbCrType yuv_type); + +void yuv422_rgb24_std( + uint32_t width, uint32_t height, + const uint8_t *y, const uint8_t *u, const uint8_t *v, uint32_t y_stride, uint32_t uv_stride, + uint8_t *rgb, uint32_t rgb_stride, + YCbCrType yuv_type); + +void yuv422_rgba_std( + uint32_t width, uint32_t height, + const uint8_t *y, const uint8_t *u, const uint8_t *v, uint32_t y_stride, uint32_t uv_stride, + uint8_t *rgb, uint32_t rgb_stride, + YCbCrType yuv_type); + +void yuv422_bgra_std( + uint32_t width, uint32_t height, + const uint8_t *y, const uint8_t *u, const uint8_t *v, uint32_t y_stride, uint32_t uv_stride, + uint8_t *rgb, uint32_t rgb_stride, + YCbCrType yuv_type); + +void yuv422_argb_std( + uint32_t width, uint32_t height, + const uint8_t *y, const uint8_t *u, const uint8_t *v, uint32_t y_stride, uint32_t uv_stride, + uint8_t *rgb, uint32_t rgb_stride, + YCbCrType yuv_type); + +void yuv422_abgr_std( + uint32_t width, uint32_t height, + const uint8_t *y, const uint8_t *u, const uint8_t *v, uint32_t y_stride, uint32_t uv_stride, + uint8_t *rgb, uint32_t rgb_stride, + YCbCrType yuv_type); + +void yuvnv12_rgb565_std( + uint32_t width, uint32_t height, + const uint8_t *y, const uint8_t *u, const uint8_t *v, uint32_t y_stride, uint32_t uv_stride, + uint8_t *rgb, uint32_t rgb_stride, + YCbCrType yuv_type); + +void yuvnv12_rgb24_std( + uint32_t width, uint32_t height, + const uint8_t *y, const uint8_t *u, const uint8_t *v, uint32_t y_stride, uint32_t uv_stride, + uint8_t *rgb, uint32_t rgb_stride, + YCbCrType yuv_type); + +void yuvnv12_rgba_std( + uint32_t width, uint32_t height, + const uint8_t *y, const uint8_t *u, const uint8_t *v, uint32_t y_stride, uint32_t uv_stride, + uint8_t *rgb, uint32_t rgb_stride, + YCbCrType yuv_type); + +void yuvnv12_bgra_std( + uint32_t width, uint32_t height, + const uint8_t *y, const uint8_t *u, const uint8_t *v, uint32_t y_stride, uint32_t uv_stride, + uint8_t *rgb, uint32_t rgb_stride, + YCbCrType yuv_type); + +void yuvnv12_argb_std( + uint32_t width, uint32_t height, + const uint8_t *y, const uint8_t *u, const uint8_t *v, uint32_t y_stride, uint32_t uv_stride, + uint8_t *rgb, uint32_t rgb_stride, + YCbCrType yuv_type); + +void yuvnv12_abgr_std( + uint32_t width, uint32_t height, + const uint8_t *y, const uint8_t *u, const uint8_t *v, uint32_t y_stride, uint32_t uv_stride, + uint8_t *rgb, uint32_t rgb_stride, + YCbCrType yuv_type); + +void yuvp010_xbgr2101010_std( + uint32_t width, uint32_t height, + const uint16_t *y, const uint16_t *u, const uint16_t *v, uint32_t y_stride, uint32_t uv_stride, + uint8_t *rgb, uint32_t rgb_stride, + YCbCrType yuv_type); + +// rgb to yuv, standard c implementation +void rgb24_yuv420_std( + uint32_t width, uint32_t height, + const uint8_t *rgb, uint32_t rgb_stride, + uint8_t *y, uint8_t *u, uint8_t *v, uint32_t y_stride, uint32_t uv_stride, + YCbCrType yuv_type); -- cgit v1.2.3