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dnxhddec: check that the indicated bit depth matches the tables.

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Fixes crash

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2012-04-21 21:39:18 +02:00
parent 8c59e0c362
commit 6c0027bb39
1 changed files with 4 additions and 0 deletions
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4
libavcodec/dnxhddec.c
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@ -82,6 +82,10 @@ static int dnxhd_init_vlc(DNXHDContext *ctx, int cid)
av_log(ctx->avctx, AV_LOG_ERROR, "unsupported cid %d\n", cid);
return -1;
}
if (ff_dnxhd_cid_table[index].bit_depth != ctx->bit_depth) {
av_log(ctx->avctx, AV_LOG_ERROR, "bit depth mismatches %d %d\n", ff_dnxhd_cid_table[index].bit_depth, ctx->bit_depth);
return AVERROR_INVALIDDATA;
}
ctx->cid_table = &ff_dnxhd_cid_table[index];
ff_free_vlc(&ctx->ac_vlc);