Initial commit

1 files changed, 33 insertions, 0 deletions

diff --git a/contrib/SDL-3.2.8/src/video/yuv2rgb/yuv_rgb.h b/contrib/SDL-3.2.8/src/video/yuv2rgb/yuv_rgb.h
new file mode 100644
index 0000000..c359316
--- /dev/null
+++ b/contrib/SDL-3.2.8/src/video/yuv2rgb/yuv_rgb.h
@@ -0,0 +1,33 @@
+#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_ */