i3lock-color/blur.h

#ifndef _BLUR_H
#define _BLUR_H

#include <stdint.h>
#include <cairo.h>

#define KERNEL_SIZE 7 
#define SIGMA_AV 2
#define HALF_KERNEL KERNEL_SIZE / 2

void blur_image_surface(cairo_surface_t *surface, int sigma);
void blur_impl_horizontal_pass_sse2(uint32_t *src, uint32_t *dst, int width, int height);
void blur_impl_horizontal_pass_generic(uint32_t *src, uint32_t *dst, int width, int height);

#endif
add initial blur support thanks to https://github.com/shiver/i3lock 2016-10-15 02:06:43 +00:00			`#ifndef _BLUR_H`
			`#define _BLUR_H`

Isolate blur implementation to a function. This will allow easier switching between naive/SSE2/AVX implementations. 2016-10-22 12:32:35 +00:00			`#include <stdint.h>`
			`#include <cairo.h>`

Implement generic box blur 2017-02-15 10:22:06 +00:00			`#define KERNEL_SIZE 7`
			`#define SIGMA_AV 2`
			`#define HALF_KERNEL KERNEL_SIZE / 2`

Pass blur strength from command line arguments 2017-02-15 11:01:08 +00:00			`void blur_image_surface(cairo_surface_t *surface, int sigma);`
Clean up a bit. 2016-11-11 17:45:20 +00:00			`void blur_impl_horizontal_pass_sse2(uint32_t src, uint32_t dst, int width, int height);`
Implement generic box blur 2017-02-15 10:22:06 +00:00			`void blur_impl_horizontal_pass_generic(uint32_t src, uint32_t dst, int width, int height);`
Add AVX version. It relies on some SSE2 instructions, so performance gain is not that huge (about 1.4x). I experimented with 256-bit loads, but they turned out to be slower (at least on Sandy Bridge). 2016-11-04 21:19:29 +00:00
add initial blur support thanks to https://github.com/shiver/i3lock 2016-10-15 02:06:43 +00:00			`#endif`