imageutils.h

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#ifndef IMAGE_UTILS_H
#define IMAGE_UTILS_H
 
#include <stdint.h>
 
#ifdef __cplusplus
extern "C" {
#endif
 
typedef struct {
    int w, h; // width and height of image
    uint8_t *pix; // image data, first pixel is top left, next pixel is 
    // to the right. each pixel is 3 bytes (red, green, blue)
} img_rgb_t;
 
 
img_rgb_t* img_new(int w, int h);
void img_free(img_rgb_t* img);
 
int img_write_ppm(img_rgb_t* img, char *filename);
img_rgb_t* img_read_ppm(char *filename);
 
void img_color_quant(img_rgb_t* img, int n_colors, int dither);
 
void img_color_palette_quantization(img_rgb_t* in_image, int num_colors,
        uint8_t* palette, uint8_t* out_image);
 
 
 
#ifdef __cplusplus
}
#endif
 
#endif