diff options
Diffstat (limited to 'libmpcodecs/vf_eq2.c')
-rw-r--r-- | libmpcodecs/vf_eq2.c | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/libmpcodecs/vf_eq2.c b/libmpcodecs/vf_eq2.c index 8f35f1ea45..57d13023f0 100644 --- a/libmpcodecs/vf_eq2.c +++ b/libmpcodecs/vf_eq2.c @@ -70,7 +70,9 @@ void create_lut (vf_eq2_t *eq2) eq2->lut[i] = 255; } else { - eq2->lut[i] = (unsigned char) (256.0 * v); + /* we divided by 255.0 so now we also multiply by 255.0, not + by 256.0. "+ 0.5" ensures proper rounding */ + eq2->lut[i] = (unsigned char) (255.0 * v + 0.5); } } } @@ -85,11 +87,10 @@ void process (unsigned char *dst, int dstride, unsigned char *src, int sstride, for (j = 0; j < h; j++) { for (i = 0; i < w; i++) { - *(dst++) = lut[*(src++)]; + dst[i] = lut[src[i]]; } - - src += sstride - w; - dst += dstride - w; + src += sstride; + dst += dstride; } } |