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Fix get_ur_golomb_jpegls() with A32_BITSTREAM_READER 

If k==0, log==0 can indicate that the coded value uses more than
MIN_CACHE_BITS bits.  With MIN_CACHE_BITS==32, the fast branch is
incorrectly taken in this case unless explicitly forbidden.

Originally committed as revision 17550 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Måns Rullgård 2009-02-24 01:41:44 +00:00
parent d3bcbf57a9
commit d4f2a6250a
1 changed files with 1 additions and 1 deletions
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2
libavcodec/golomb.h
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@ -273,7 +273,7 @@ static inline int get_ur_golomb_jpegls(GetBitContext *gb, int k, int limit, int
log= av_log2(buf);
if(log - k >= 32-MIN_CACHE_BITS && 32-log < limit){
if(log - k >= 32-MIN_CACHE_BITS+(MIN_CACHE_BITS==32) && 32-log < limit){
buf >>= log - k;
buf += (30-log)<<k;
LAST_SKIP_BITS(re, gb, 32 + k - log);