Factor code&0xf out of if() in decode_block_progressive().

Originally committed as revision 25544 to svn://svn.ffmpeg.org/ffmpeg/trunk
15 years ago · 8870b25140
parent 7f4a1e8f6c
commit 8870b25140
1 changed files with 2 additions and 2 deletions
--- a/libavcodec/mjpegdec.c
+++ b/libavcodec/mjpegdec.c
@ -477,9 +477,9 @@ static int decode_block_progressive(MJpegDecodeContext *s, DCTELEM *block, uint8
        /* Progressive JPEG use AC coeffs from zero and this decoder sets offset 16 by default */
        code -= 16;
        run = ((unsigned) code) >> 4;
-        if(code & 0xF) {
+        code &= 0xF;
+        if(code) {
            i += run;
-            code &= 0xf;
            if(code > MIN_CACHE_BITS - 16){
                UPDATE_CACHE(re, &s->gb)
            }