#ifndef FILTERS_H
#define FILTERS_H
#include "utils.h"

unsigned int
u32_put_alpha(const unsigned int clr, const unsigned char alpha);

unsigned int
u32_invert(const unsigned int clr);

unsigned int
u32_swap_rb(const unsigned int clr);

unsigned int
u32_grayscale(const unsigned int clr);

unsigned int
u32_step(const unsigned int clr, const unsigned char max);

unsigned int
u32_brighten(const unsigned int clr, const float factor);

unsigned int
u32_mix(const unsigned int clr_a, const unsigned int clr_b);

unsigned int
u32_lerp(const unsigned clr_a, const unsigned int clr_b, const float ratio);

unsigned int
u32_mask(const unsigned int clr, const char keep);

unsigned int
u32_rotl(const unsigned int clr, const int n);

unsigned int
u32_contrast(const unsigned int clr, const float factor);

unsigned int
u32_avg_gb(const unsigned int clr);

unsigned int*
box_blur(const unsigned int* src_buf, const PPM* img, const int radius);

#endif