nv12转rgb「建议收藏」

void NV12_T_RGB(unsigned int width, unsigned int height, unsigned char* Y, unsigned char* UV, unsigned char* rgb)
{ 

int r, g, b;
int y, u, v;
for (int i = 0; i < height; i++) { 

for (int j = 0; j < width; j++) { 

y = Y[i * width + j];
u = UV[(i / 2 * width + j / 2 * 2)];
v = UV[(i / 2 * width + j / 2 * 2) + 1];
// TRACE("yuv(%d, %d, %d)\n", i * width + j, (i / 2 * width + j / 2 * 2), (i / 2 * width + j / 2 * 2) + 1);
r = y + 1.4075 * (v-128);  //r
g = y - 0.344 * (u-128) - 0.714 * (v-128); //g
b = y + 1.770 * (u-128); //b
if (r > 255)   r = 255;
if (g > 255)   g = 255;
if (b > 255)   b = 255;
if (r < 0)     r = 0;
if (g < 0)     g = 0;
if (b < 0)     b = 0;
rgb[(i * width + j) * 3 + 0] = (unsigned char)r;
rgb[(i * width + j) * 3 + 1] = (unsigned char)g;
rgb[(i * width + j) * 3 + 2] = (unsigned char)b;
}
}
}