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| author | Mattias Andrée <maandree@kth.se> | 2017-01-20 10:38:23 +0100 |
|---|---|---|
| committer | Mattias Andrée <maandree@kth.se> | 2017-01-20 10:38:23 +0100 |
| commit | eabf429b8405a3c120b2409d20f6ec6329ef0589 (patch) | |
| tree | 4a41698bf658468c57b62c7ad16f2c637fa7e211 /src/blind-gauss-blur.c | |
| parent | blind-gauss-blur: fix -a (diff) | |
| download | blind-eabf429b8405a3c120b2409d20f6ec6329ef0589.tar.gz blind-eabf429b8405a3c120b2409d20f6ec6329ef0589.tar.bz2 blind-eabf429b8405a3c120b2409d20f6ec6329ef0589.tar.xz | |
blind-guass-blur: check that the SD is positive
Signed-off-by: Mattias Andrée <maandree@kth.se>
Diffstat (limited to 'src/blind-gauss-blur.c')
| -rw-r--r-- | src/blind-gauss-blur.c | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/src/blind-gauss-blur.c b/src/blind-gauss-blur.c index 174afb0..d974a53 100644 --- a/src/blind-gauss-blur.c +++ b/src/blind-gauss-blur.c @@ -135,8 +135,8 @@ process_xyza(char *restrict output, char *restrict cbuf, char *restrict sbuf, if (chroma || measure_y_only) {\ k[0] = sig[i1][1] * sig[i1][3];\ if (auto_spread)\ - spread = (size_t)(k[0] * 3 + 0.5);\ - blur[2] = blur[0] = !!k[0];\ + spread = k[0] > 0 ? (size_t)(k[0] * 3 + 0.5) : 0;\ + blur[2] = blur[0] = k[0] > 0;\ c[0] = k[0] *= k[0] * 2, c[0] = sqrt(c[0] * M_PI);\ k[0] = 1 / -k[0], c[0] = 1 / c[0];\ if (chroma) {\ @@ -154,15 +154,17 @@ process_xyza(char *restrict output, char *restrict cbuf, char *restrict sbuf, spread = 0;\ for (i = 0; i < 3; i++) {\ k[i] = sig[i1][i] * sig[i1][3];\ - if (auto_spread && spread < (size_t)(k[i] * 3 + 0.5))\ + if (auto_spread && k[i] > 0 && spread < (size_t)(k[i] * 3 + 0.5))\ spread = (size_t)(k[i] * 3 + 0.5);\ - blur[i] = !!k[i];\ + blur[i] = k[i] > 0;\ c[i] = k[i] *= k[i] * 2, c[i] = sqrt(c[i] * M_PI);\ k[i] = 1 / -k[i], c[i] = 1 / c[i];\ }\ }\ if (blur[0] + blur[1] + blur[2] == 0)\ - goto no_blur_##DIR; + goto no_blur_##DIR;\ + if (spread < 1)\ + spread = 1; #define BLUR_PIXEL(START, LOOP, DISTANCE)\ if (k[0] == k[1] && k[1] == k[2]) {\ |