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4xm: fix division by zero caused by bps<8 

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
(cherry picked from commit 1b8741a684)

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2012-05-29 19:16:22 +02:00
parent 3e4eea6c32
commit 9e9e6bbe7b
1 changed files with 5 additions and 0 deletions
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5
libavformat/4xm.c
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@ -201,6 +201,11 @@ static int fourxm_read_header(AVFormatContext *s,
ret= -1;
goto fail;
}
if(!fourxm->tracks[current_track].adpcm && fourxm->tracks[current_track].bits<8){
av_log(s, AV_LOG_ERROR, "bits unspecified for non ADPCM\n");
ret = AVERROR_INVALIDDATA;
goto fail;
}
i += 8 + size;
/* allocate a new AVStream */