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avcodec/scpr: fix decoding of prev+top-topleft prediction in keyframes

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Signed-off-by: Paul B Mahol <onemda@gmail.com>
pull/283/head
Paul B Mahol 7 years ago
parent f9d3841ae6
commit 324954cf96
1 changed files with 3 additions and 3 deletions
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  1. 6
      libavcodec/scpr.c

6
libavcodec/scpr.c
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@ -446,13 +446,13 @@ static int decompress_i(AVCodecContext *avctx, uint32_t *dst, int linesize)
} }
r = odst[(ly * linesize + lx) * 4] + r = odst[(ly * linesize + lx) * 4] +
odst[((y * linesize + x) + off - z) * 4 + 4] - odst[((y * linesize + x) + off) * 4 + 4] -
odst[((y * linesize + x) + off - z) * 4]; odst[((y * linesize + x) + off - z) * 4];
g = odst[(ly * linesize + lx) * 4 + 1] + g = odst[(ly * linesize + lx) * 4 + 1] +
odst[((y * linesize + x) + off - z) * 4 + 5] - odst[((y * linesize + x) + off) * 4 + 5] -
odst[((y * linesize + x) + off - z) * 4 + 1]; odst[((y * linesize + x) + off - z) * 4 + 1];
b = odst[(ly * linesize + lx) * 4 + 2] + b = odst[(ly * linesize + lx) * 4 + 2] +
odst[((y * linesize + x) + off - z) * 4 + 6] - odst[((y * linesize + x) + off) * 4 + 6] -
odst[((y * linesize + x) + off - z) * 4 + 2]; odst[((y * linesize + x) + off - z) * 4 + 2];
clr = ((b & 0xFF) << 16) + ((g & 0xFF) << 8) + (r & 0xFF); clr = ((b & 0xFF) << 16) + ((g & 0xFF) << 8) + (r & 0xFF);
dst[y * linesize + x] = clr; dst[y * linesize + x] = clr;

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