yuyv422转rgb565之.c文件

最新推荐文章于 2025-05-13 15:20:41 发布

杨柳

最新推荐文章于 2025-05-13 15:20:41 发布

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文章标签： dst include c

本文深入探讨了将YUV颜色空间转换为RGB565颜色格式的算法实现，包括红绿蓝调整数组的具体用法，以及核心函数`yuv2rgb565`的详细解析。

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#include "yuyv2rgb565.h"
//--------------------
static const signed short redAdjust[] = {
-161,-160,-159,-158,-157,-156,-155,-153,
-152,-151,-150,-149,-148,-147,-145,-144,
-143,-142,-141,-140,-139,-137,-136,-135,
-134,-133,-132,-131,-129,-128,-127,-126,
-125,-124,-123,-122,-120,-119,-118,-117,
-116,-115,-114,-112,-111,-110,-109,-108,
-107,-106,-104,-103,-102,-101,-100, -99,
-98, -96, -95, -94, -93, -92, -91, -90,
-88, -87, -86, -85, -84, -83, -82, -80,
-79, -78, -77, -76, -75, -74, -72, -71,
-70, -69, -68, -67, -66, -65, -63, -62,
-61, -60, -59, -58, -57, -55, -54, -53,
-52, -51, -50, -49, -47, -46, -45, -44,
-43, -42, -41, -39, -38, -37, -36, -35,
-34, -33, -31, -30, -29, -28, -27, -26,
-25, -23, -22, -21, -20, -19, -18, -17,
-16, -14, -13, -12, -11, -10, -9, -8,
-6, -5, -4, -3, -2, -1, 0, 1,
2, 3, 4, 5, 6, 7, 9, 10,
11, 12, 13, 14, 15, 17, 18, 19,
20, 21, 22, 23, 25, 26, 27, 28,
29, 30, 31, 33, 34, 35, 36, 37,
38, 39, 40, 42, 43, 44, 45, 46,
47, 48, 50, 51, 52, 53, 54, 55,
56, 58, 59, 60, 61, 62, 63, 64,
66, 67, 68, 69, 70, 71, 72, 74,
75, 76, 77, 78, 79, 80, 82, 83,
84, 85, 86, 87, 88, 90, 91, 92,
93, 94, 95, 96, 97, 99, 100, 101,
102, 103, 104, 105, 107, 108, 109, 110,
111, 112, 113, 115, 116, 117, 118, 119,
120, 121, 123, 124, 125, 126, 127, 128,
};

static const signed short greenAdjust1[] = {
34, 34, 33, 33, 32, 32, 32, 31,
31, 30, 30, 30, 29, 29, 28, 28,
28, 27, 27, 27, 26, 26, 25, 25,
25, 24, 24, 23, 23, 23, 22, 22,
21, 21, 21, 20, 20, 19, 19, 19,
18, 18, 17, 17, 17, 16, 16, 15,
15, 15, 14, 14, 13, 13, 13, 12,
12, 12, 11, 11, 10, 10, 10,   9,
   9,   8,   8,   8,   7,   7,   6,   6,
   6,   5,   5,   4,   4,   4,   3,   3,
   2,   2,   2,   1,   1,   0,   0,   0,
   0,   0, -1, -1, -1, -2, -2, -2,
-3, -3, -4, -4, -4, -5, -5, -6,
-6, -6, -7, -7, -8, -8, -8, -9,
-9, -10, -10, -10, -11, -11, -12, -12,
-12, -13, -13, -14, -14, -14, -15, -15,
-16, -16, -16, -17, -17, -17, -18, -18,
-19, -19, -19, -20, -20, -21, -21, -21,
-22, -22, -23, -23, -23, -24, -24, -25,
-25, -25, -26, -26, -27, -27, -27, -28,
-28, -29, -29, -29, -30, -30, -30, -31,
-31, -32, -32, -32, -33, -33, -34, -34,
-34, -35, -35, -36, -36, -36, -37, -37,
-38, -38, -38, -39, -39, -40, -40, -40,
-41, -41, -42, -42, -42, -43, -43, -44,
-44, -44, -45, -45, -45, -46, -46, -47,
-47, -47, -48, -48, -49, -49, -49, -50,
-50, -51, -51, -51, -52, -52, -53, -53,
-53, -54, -54, -55, -55, -55, -56, -56,
-57, -57, -57, -58, -58, -59, -59, -59,
-60, -60, -60, -61, -61, -62, -62, -62,
-63, -63, -64, -64, -64, -65, -65, -66,
};

static const signed short greenAdjust2[] = {
74, 73, 73, 72, 71, 71, 70, 70,
69, 69, 68, 67, 67, 66, 66, 65,
65, 64, 63, 63, 62, 62, 61, 60,
60, 59, 59, 58, 58, 57, 56, 56,
55, 55, 54, 53, 53, 52, 52, 51,
51, 50, 49, 49, 48, 48, 47, 47,
46, 45, 45, 44, 44, 43, 42, 42,
41, 41, 40, 40, 39, 38, 38, 37,
37, 36, 35, 35, 34, 34, 33, 33,
32, 31, 31, 30, 30, 29, 29, 28,
27, 27, 26, 26, 25, 24, 24, 23,
23, 22, 22, 21, 20, 20, 19, 19,
18, 17, 17, 16, 16, 15, 15, 14,
13, 13, 12, 12, 11, 11, 10,   9,
   9,   8,   8,   7,   6,   6,   5,   5,
   4,   4,   3,   2,   2,   1,   1,   0,
   0,   0, -1, -1, -2, -2, -3, -4,
-4, -5, -5, -6, -6, -7, -8, -8,
-9, -9, -10, -11, -11, -12, -12, -13,
-13, -14, -15, -15, -16, -16, -17, -17,
-18, -19, -19, -20, -20, -21, -22, -22,
-23, -23, -24, -24, -25, -26, -26, -27,
-27, -28, -29, -29, -30, -30, -31, -31,
-32, -33, -33, -34, -34, -35, -35, -36,
-37, -37, -38, -38, -39, -40, -40, -41,
-41, -42, -42, -43, -44, -44, -45, -45,
-46, -47, -47, -48, -48, -49, -49, -50,
-51, -51, -52, -52, -53, -53, -54, -55,
-55, -56, -56, -57, -58, -58, -59, -59,
-60, -60, -61, -62, -62, -63, -63, -64,
-65, -65, -66, -66, -67, -67, -68, -69,
-69, -70, -70, -71, -71, -72, -73, -73,
};

static const signed short blueAdjust[] = {
-276,-274,-272,-270,-267,-265,-263,-261,
-259,-257,-255,-253,-251,-249,-247,-245,
-243,-241,-239,-237,-235,-233,-231,-229,
-227,-225,-223,-221,-219,-217,-215,-213,
-211,-209,-207,-204,-202,-200,-198,-196,
-194,-192,-190,-188,-186,-184,-182,-180,
-178,-176,-174,-172,-170,-168,-166,-164,
-162,-160,-158,-156,-154,-152,-150,-148,
-146,-144,-141,-139,-137,-135,-133,-131,
-129,-127,-125,-123,-121,-119,-117,-115,
-113,-111,-109,-107,-105,-103,-101, -99,
-97, -95, -93, -91, -89, -87, -85, -83,
-81, -78, -76, -74, -72, -70, -68, -66,
-64, -62, -60, -58, -56, -54, -52, -50,
-48, -46, -44, -42, -40, -38, -36, -34,
-32, -30, -28, -26, -24, -22, -20, -18,
-16, -13, -11, -9, -7, -5, -3, -1,
0, 2, 4, 6, 8, 10, 12, 14,
16, 18, 20, 22, 24, 26, 28, 30,
32, 34, 36, 38, 40, 42, 44, 46,
49, 51, 53, 55, 57, 59, 61, 63,
65, 67, 69, 71, 73, 75, 77, 79,
81, 83, 85, 87, 89, 91, 93, 95,
97, 99, 101, 103, 105, 107, 109, 112,
114, 116, 118, 120, 122, 124, 126, 128,
130, 132, 134, 136, 138, 140, 142, 144,
146, 148, 150, 152, 154, 156, 158, 160,
162, 164, 166, 168, 170, 172, 175, 177,
179, 181, 183, 185, 187, 189, 191, 193,
195, 197, 199, 201, 203, 205, 207, 209,
211, 213, 215, 217, 219, 221, 223, 225,
227, 229, 231, 233, 235, 238, 240, 242,
};

static inline void yuv2rgb565(const int y, const int u, const int v, unsigned short &rgb565)
{
int r, g, b;

r = y + redAdjust[v];
g = y + greenAdjust1[u] + greenAdjust2[v];
b = y + blueAdjust[u];

#define CLAMP(x) if (x < 0) x = 0 ; else if (x > 255) x = 255
CLAMP(r);
CLAMP(g);
CLAMP(b);
#undef CLAMP
rgb565 = (unsigned short)(((r >> 3) << 11) | ((g >> 2) << 5) | (b >> 3));
}

extern "C" void ConvertYUYVtoRGB565(const void *yuyv_data, void *rgb565_data, const unsigned int w, const unsigned int h)
{

const unsigned char *src = (unsigned char *)yuyv_data;
unsigned short *dst = (unsigned short *)rgb565_data;

for (unsigned int i = 0, j = 0; i < w * h * 2; i += 4, j += 2) {
int y, u, v;
unsigned short rgb565;

  y = src[i + 0];
  u = src[i + 1];
  v = src[i + 3];
  yuv2rgb565(y, u, v, rgb565);
  dst[j + 0] = rgb565;

  y = src[i + 2];
  yuv2rgb565(y, u, v, rgb565);
  dst[j + 1] = rgb565;

}
}