Optimize blur a bit more.
diff --git a/cairo-util.c b/cairo-util.c
index 94c7b03..3fd5176 100644
--- a/cairo-util.c
+++ b/cairo-util.c
@@ -100,6 +100,8 @@
return buffer;
}
+#define ARRAY_LENGTH(a) (sizeof (a) / sizeof (a)[0])
+
void
blur_surface(cairo_surface_t *surface, int margin)
{
@@ -107,10 +109,11 @@
int32_t width, height, stride, x, y, z, w;
uint8_t *src, *dst;
uint32_t *s, *d, a, p;
- int i, j, k, size = 17, half;
- uint8_t kernel[100];
+ int i, j, k, size, half;
+ uint8_t kernel[10];
double f;
+ size = ARRAY_LENGTH(kernel);
width = cairo_image_surface_get_width(surface);
height = cairo_image_surface_get_height(surface);
stride = cairo_image_surface_get_stride(surface);
@@ -131,9 +134,11 @@
s = (uint32_t *) (src + i * stride);
d = (uint32_t *) (dst + i * stride);
for (j = 0; j < width; j++) {
- if (margin < j && j < width - margin &&
- margin < i && i < height - margin)
+ if (margin < j && j < width - margin) {
+ d[j] = s[j];
continue;
+ }
+
x = 0;
y = 0;
z = 0;
@@ -156,9 +161,11 @@
s = (uint32_t *) (dst + i * stride);
d = (uint32_t *) (src + i * stride);
for (j = 0; j < width; j++) {
- if (margin <= j && j < width - margin &&
- margin <= i && i < height - margin)
+ if (margin <= i && i < height - margin) {
+ d[j] = s[j];
continue;
+ }
+
x = 0;
y = 0;
z = 0;