wmalosslessdec: fix a get_bits(0) in decode_ac_filter
authorMichael Niedermayer <michaelni@gmx.at>
Sat, 14 Apr 2012 12:50:25 +0000 (14:50 +0200)
committerMichael Niedermayer <michaelni@gmx.at>
Sat, 14 Apr 2012 12:50:48 +0000 (14:50 +0200)
Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
libavcodec/wmalosslessdec.c

index 1904a1c..a806c38 100644 (file)
@@ -407,7 +407,7 @@ static void decode_ac_filter(WmallDecodeCtx *s)
     s->acfilter_scaling = get_bits(&s->gb, 4);
 
     for (i = 0; i < s->acfilter_order; i++)
-        s->acfilter_coeffs[i] = get_bits(&s->gb, s->acfilter_scaling) + 1;
+        s->acfilter_coeffs[i] = (s->acfilter_scaling ? get_bits(&s->gb, s->acfilter_scaling) : 0) + 1;
 }
 
 static void decode_mclms(WmallDecodeCtx *s)