avcodec/mjpegdec: Fix undefined shift

Fixes CID1194388 Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
11 years ago · b432960528
parent bc3234062d
commit b432960528
1 changed files with 1 additions and 1 deletions
--- a/libavcodec/mjpegdec.c
+++ b/libavcodec/mjpegdec.c
@ -1272,7 +1272,7 @@ static int mjpeg_decode_scan_progressive_ac(MJpegDecodeContext *s, int ss,
    }

    if (!Al) {
-        s->coefs_finished[c] |= (1LL << (se + 1)) - (1LL << ss);
+        s->coefs_finished[c] |= (2LL << se) - (1LL << ss);
        last_scan = !~s->coefs_finished[c];
    }