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Lines 6-39
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/* LIMIT: convert a 16.16 fixed-point value to a byte, with clipping. */ |
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/* LIMIT: convert a 16.16 fixed-point value to a byte, with clipping. */ |
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#define LIMIT(x) ((x)>0xffffff?0xff: ((x)<=0xffff?0:((x)>>16))) |
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#define LIMIT(x) ((x)>0xffffff?0xff: ((x)<=0xffff?0:((x)>>16))) |
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unsigned char yuv420p_to_rgb(unsigned char *image, unsigned char *temp, int x, int y, int z) |
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{ |
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const int numpix = x * y; |
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const int bytes = z; // (z*8) >> 3; |
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int i, j, y00, y01, y10, y11, u, v; |
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unsigned char *pY = image; |
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unsigned char *pU = pY + numpix; |
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unsigned char *pV = pU + numpix / 4; |
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unsigned char *image2 = temp; |
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for(j = 0; j <= y - 2; j += 2) { |
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for(i = 0; i <= x - 2; i += 2) { |
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y00 = *pY; |
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y01 = *(pY + 1); |
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y10 = *(pY + x); |
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y11 = *(pY + x + 1); |
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u = (*pU++) - 128; |
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v = (*pV++) - 128; |
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move_420_block(y00, y01, y10, y11, u, v, x, image2, z * 8); |
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pY += 2; |
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image2 += 2 * bytes; |
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} |
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pY += x; |
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image2 += x * bytes; |
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} |
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} |
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static inline void move_420_block(int yTL, int yTR, int yBL, int yBR, int u, int v, |
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static inline void move_420_block(int yTL, int yTR, int yBL, int yBR, int u, int v, |
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int rowPixels, unsigned char *rgb, int bits) |
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int rowPixels, unsigned char *rgb, int bits) |
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{ |
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{ |
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Lines 103-108
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| (LIMIT(r + yBR) & 0xF8); |
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| (LIMIT(r + yBR) & 0xF8); |
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} |
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} |
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} |
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} |
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unsigned char yuv420p_to_rgb(unsigned char *image, unsigned char *temp, int x, int y, int z) |
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{ |
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const int numpix = x * y; |
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const int bytes = z; // (z*8) >> 3; |
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int i, j, y00, y01, y10, y11, u, v; |
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unsigned char *pY = image; |
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unsigned char *pU = pY + numpix; |
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unsigned char *pV = pU + numpix / 4; |
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unsigned char *image2 = temp; |
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for(j = 0; j <= y - 2; j += 2) { |
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for(i = 0; i <= x - 2; i += 2) { |
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y00 = *pY; |
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y01 = *(pY + 1); |
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y10 = *(pY + x); |
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y11 = *(pY + x + 1); |
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u = (*pU++) - 128; |
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v = (*pV++) - 128; |
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move_420_block(y00, y01, y10, y11, u, v, x, image2, z * 8); |
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pY += 2; |
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image2 += 2 * bytes; |
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} |
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pY += x; |
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image2 += x * bytes; |
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} |
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} |
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void fix_colour(char *image, int x, int y) |
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void fix_colour(char *image, int x, int y) |
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{ |
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{ |
