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avcodec/jpeg2000dec: Check for mismatching per expected termination

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not just at the end

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2015-06-27 15:12:35 +02:00
parent 68f00fb40b
commit 5cccbc3b74
1 changed files with 6 additions and 0 deletions
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6
libavcodec/jpeg2000dec.c
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@ -1503,6 +1503,12 @@ static int decode_cblk(Jpeg2000DecoderContext *s, Jpeg2000CodingStyle *codsty,
av_log(s->avctx, AV_LOG_ERROR, "Missing needed termination \n");
return AVERROR_INVALIDDATA;
}
if (FFABS(cblk->data + cblk->data_start[term_cnt + 1] - 2 - t1->mqc.bp) > 0) {
av_log(s->avctx, AV_LOG_WARNING, "Mid mismatch %"PTRDIFF_SPECIFIER" in pass %d of %d\n",
cblk->data + cblk->data_start[term_cnt + 1] - 2 - t1->mqc.bp,
pass_cnt, cblk->npasses);
}
ff_mqc_initdec(&t1->mqc, cblk->data + cblk->data_start[++term_cnt], coder_type == 2, 0);
}