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avcodec/dpx: Move need_align to act per line
Fixes out of array read
Fixes: 61cf123c081ee2bb774d307c75bdb99e/asan_heap-oob_1224f76_5546_bee833ffae73f752b489b9eeaac52db7.dpx
Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit c8aaae8e0f
)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
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@ -334,11 +334,11 @@ static int decode_frame(AVCodecContext *avctx,
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// For 12 bit, ignore alpha
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if (elements == 4)
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buf += 2;
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// Jump to next aligned position
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buf += need_align;
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}
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for (i = 0; i < 3; i++)
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ptr[i] += p->linesize[i];
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// Jump to next aligned position
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buf += need_align;
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}
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break;
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case 16:
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