Atlas - yuv_rgb.h
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[FILE BEGIN]
1#ifndef YUV_RGB_H_
2#define YUV_RGB_H_
3
4// Copyright 2016 Adrien Descamps
5// Distributed under BSD 3-Clause License
6
7// Provide optimized functions to convert images from 8bits yuv420 to rgb24 format
8
9// There are a few slightly different variations of the YCbCr color space with different parameters that
10// change the conversion matrix.
11// The three most common YCbCr color space, defined by BT.601, BT.709 and JPEG standard are implemented here.
12// See the respective standards for details
13// The matrix values used are derived from http://www.equasys.de/colorconversion.html
14
15// YUV420 is stored as three separate channels, with U and V (Cb and Cr) subsampled by a 2 factor
16// For conversion from yuv to rgb, no interpolation is done, and the same UV value are used for 4 rgb pixels. This
17// is suboptimal for image quality, but by far the fastest method.
18
19// For all methods, width and height should be even, if not, the last row/column of the result image won't be affected.
20// For sse methods, if the width if not divisable by 32, the last (width%32) pixels of each line won't be affected.
21
22/*#include <stdint.h>*/
23
24// yuv to rgb, standard c implementation
25#include "yuv_rgb_std.h"
26
27// yuv to rgb, sse2 implementation
28#include "yuv_rgb_sse.h"
29
30// yuv to rgb, lsx implementation
31#include "yuv_rgb_lsx.h"
32
33#endif /* YUV_RGB_H_ */
34
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