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rv10: always check direct mode interpolation times.

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Fixes Division by 0

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2013-01-07 21:16:23 +01:00
parent a572cc8c7a
commit f65daf577a
1 changed files with 7 additions and 5 deletions
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4
libavcodec/rv10.c
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@ -415,13 +415,15 @@ static int rv20_decode_picture_header(RVDecContext *rv)
}else{
s->time= seq;
s->pb_time= s->pp_time - (s->last_non_b_time - s->time);
}
}
if (s->pict_type==AV_PICTURE_TYPE_B) {
if(s->pp_time <=s->pb_time || s->pp_time <= s->pp_time - s->pb_time || s->pp_time<=0){
av_log(s->avctx, AV_LOG_DEBUG, "messed up order, possible from seeking? skipping current b frame\n");
return FRAME_SKIPPED;
}
ff_mpeg4_init_direct_mv(s);
}
}
s->no_rounding= get_bits1(&s->gb);