diff options
Diffstat (limited to 'libavcodec/pngenc.c')
| -rw-r--r-- | libavcodec/pngenc.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/libavcodec/pngenc.c b/libavcodec/pngenc.c index 10ed5afad0..703371d856 100644 --- a/libavcodec/pngenc.c +++ b/libavcodec/pngenc.c @@ -158,7 +158,7 @@ static uint8_t *png_choose_filter(PNGEncContext *s, uint8_t *dst, buf1[0] = pred; cost = 0; for(i=0; i<=size; i++) - cost += abs(0x80 - (buf1[i] ^ 0x80)); + cost += abs((int8_t)buf1[i]); if(cost < bcost) { bcost = cost; FFSWAP(uint8_t*, buf1, buf2); |