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@@ -55,7 +55,8 @@ static int count_pixels(const uint8_t *start, int len, int bpp, int same) |
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return count; |
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} |
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int ff_rle_encode(uint8_t *outbuf, int out_size, const uint8_t *ptr , int bpp, int w, int8_t add, uint8_t xor) |
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int ff_rle_encode(uint8_t *outbuf, int out_size, const uint8_t *ptr , int bpp, int w, |
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int8_t add_rep, uint8_t xor_rep,int8_t add_raw,uint8_t xor_raw) |
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{ |
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int count, x; |
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uint8_t *out = outbuf; |
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@@ -64,13 +65,13 @@ int ff_rle_encode(uint8_t *outbuf, int out_size, const uint8_t *ptr , int bpp, i |
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/* see if we can encode the next set of pixels with RLE */ |
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if((count = count_pixels(ptr, w-x, bpp, 1)) > 1) { |
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if(out + bpp + 1 > outbuf + out_size) return -1; |
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*out++ = (count ^ xor) + add; |
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*out++ = (count ^ xor_rep) + add_rep; |
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memcpy(out, ptr, bpp); |
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out += bpp; |
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} else { |
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/* fall back on uncompressed */ |
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count = count_pixels(ptr, w-x, bpp, 0); |
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*out++ = count - 1; |
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*out++ = (count ^ xor_raw) + add_raw; |
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if(out + bpp*count > outbuf + out_size) return -1; |
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memcpy(out, ptr, bpp * count); |
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