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check for qscale==0 (fixes 1/0 on one corrupted stream)

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Originally committed as revision 1574 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Michael Niedermayer 2003-02-10 22:43:30 +00:00
parent dce778e0ea
commit ae2d2d6c41
1 changed files with 4 additions and 0 deletions
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4
libavcodec/msmpeg4.c
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@ -1228,6 +1228,10 @@ return -1;
} }
#endif #endif
s->qscale = get_bits(&s->gb, 5); s->qscale = get_bits(&s->gb, 5);
if(s->qscale==0){
fprintf(stderr, "invalid qscale\n");
return -1;
}
if (s->pict_type == I_TYPE) { if (s->pict_type == I_TYPE) {
code = get_bits(&s->gb, 5); code = get_bits(&s->gb, 5);