imageUtils.h

#include "colorUtils.h"

/**
 * A structure that represents a single pixel value using
 * the RGB (red-blue-green) color model.  Each integer
 * value is in the range [0, 255].
 */
typedef struct {
  int red;
  int green;
  int blue;
} Pixel;

/**
 * Loads an image file specified by the given file path/name.
 * The height and width are indicated in the two pass-by-reference variables.
 * The image is returned as a two-dimensional array of Pixel values
 * of dimension (height x width) where the pixel at [0][0] corresponds to
 * the top-left most pixel value.
 */
Pixel **loadImage(const char *filePath, int *height, int *width);

/**
 * Saves the given image (which is assumed to have the same format as in
 * loadImage() and is of the given height x width) to the file specified
 * by the given path/name.
 */
void saveImage(const char *filePath, Pixel **image, int height, int width);

/**
 * Creates a deep copy of the given image of the given height/width,
 * returning the new copy as a 2-dimensional array of pixels.
 */
Pixel ** copyImage(Pixel **image, int height, int width);

/**
 * Convert's the given image to grayscale using the given mode.
  */
void imageToGrayScale(Pixel **image, int height, int width, Mode m);

/**
 * Convert's the given image to a sepia tone.
 */
void imageToSepia(Pixel **image, int height, int width);