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ffmpeg.wasm-core
Commit 324954cf authored by Paul B Mahol's avatar Paul B Mahol
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avcodec/scpr: fix decoding of prev+top-topleft prediction in keyframes 

Signed-off-by: 's avatarPaul B Mahol <onemda@gmail.com>
parent f9d3841a
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Showing with 3 additions and 3 deletions
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] +
odst[((y * linesize + x) + off - z) * 4 + 4] -
odst[((y * linesize + x) + off) * 4 + 4] -
odst[((y * linesize + x) + off - z) * 4];
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];
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];
clr = ((b & 0xFF) << 16) + ((g & 0xFF) << 8) + (r & 0xFF);
dst[y * linesize + x] = clr;
......
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