Daily update on 20250721-223448 by Nitload Youmu. Additional Message : Rename StgSHarp.C to StgSharp.Native. Add SDL to repo.

Signed-off-by: Nitload <YoumuLiu_NSI@whv0t.onmicrosoft.com>
2025-07-21 22:34:48 +08:00
parent c624a8ca38
commit 28ea5d1d1e
1215 changed files with 628924 additions and 114 deletions
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+#ifndef YUV_RGB_H_
+#define YUV_RGB_H_
+
+// 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 <stdint.h>*/
+
+// yuv to rgb, standard c implementation
+#include "yuv_rgb_std.h"
+
+// yuv to rgb, sse2 implementation
+#include "yuv_rgb_sse.h"
+
+// yuv to rgb, lsx implementation
+#include "yuv_rgb_lsx.h"
+
+#endif /* YUV_RGB_H_ */