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Code Issues Releases Activity

avcodec/dnxhddec: Disable 12bit by default

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The DC VLC table used is too small, fixing this requires a sample,
thus request a sample.
Some samples are said to work even though the table has the wrong size, thus
this is left enabled if the user enables experimental features.

Fixes: 2abd25478c62a675f335fac00b467023/asan_static-oob_10aff98_1227_8811480c6ef1e970a7977ceb7e5a9958.mxf

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Approved-by: kurosu
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2015-11-28 12:41:19 +01:00
parent ec494e6c83
commit 55711e6fd0
1 changed files with 5 additions and 0 deletions
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5
libavcodec/dnxhddec.c
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@ -118,6 +118,11 @@ static int dnxhd_init_vlc(DNXHDContext *ctx, uint32_t cid, int bitdepth)
av_log(ctx->avctx, AV_LOG_ERROR, "bit depth mismatches %d %d\n", ff_dnxhd_cid_table[index].bit_depth, bitdepth);
return AVERROR_INVALIDDATA;
}
if (bitdepth > 10) {
avpriv_request_sample(ctx->avctx, "DNXHR 12-bit");
if (ctx->avctx->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL)
return AVERROR_PATCHWELCOME;
}
ctx->cid_table = &ff_dnxhd_cid_table[index];
av_log(ctx->avctx, AV_LOG_VERBOSE, "Profile cid %d.\n", cid);