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| author | Luca Barbato <lu_zero@gentoo.org> | 2013-07-09 09:18:16 +0200 |
|---|---|---|
| committer | Luca Barbato <lu_zero@gentoo.org> | 2013-07-09 10:49:29 +0200 |
| commit | bbf6a4aa20bfe3d7869b2218e66063602dfb8aa7 (patch) | |
| tree | 246c0839aea5ee4b6b8053b6c50603f893145831 /libavcodec/imc.c | |
| parent | 50cf5a7fb78846fc39b3ecdaa896a10bcd74da2a (diff) | |
| download | ffmpeg-bbf6a4aa20bfe3d7869b2218e66063602dfb8aa7.tar.gz | |
imc: Catch a division by zero
Reported-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
CC: libav-stable@libav.org
Diffstat (limited to 'libavcodec/imc.c')
| -rw-r--r-- | libavcodec/imc.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/libavcodec/imc.c b/libavcodec/imc.c index 2749099d22..e3f5e15324 100644 --- a/libavcodec/imc.c +++ b/libavcodec/imc.c @@ -449,6 +449,10 @@ static int bit_allocation(IMCContext *q, IMCChannel *chctx, iacc += chctx->bandWidthT[i]; summa += chctx->bandWidthT[i] * chctx->flcoeffs4[i]; } + + if (!iacc) + return AVERROR_INVALIDDATA; + chctx->bandWidthT[BANDS - 1] = 0; summa = (summa * 0.5 - freebits) / iacc; |