get_se_golomb: fix decoding of very large values

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
12 years ago · a92816c4eb
parent b8820e7aa3
commit a92816c4eb
1 changed files with 5 additions and 1 deletions
--- a/libavcodec/golomb.h
+++ b/libavcodec/golomb.h
@ -187,7 +187,11 @@ static inline int get_se_golomb(GetBitContext *gb){

        return ff_se_golomb_vlc_code[buf];
    }else{
-        log= 2*av_log2(buf) - 31;
+        log = av_log2(buf);
+        LAST_SKIP_BITS(re, gb, 31 - log);
+        UPDATE_CACHE(re, gb);
+        buf = GET_CACHE(re, gb);
+
        buf>>= log;

        LAST_SKIP_BITS(re, gb, 32 - log);