// Task 1 - Load a 512x512 image lena.raw
//        - Apply specified per-pixel transformation to each pixel
//        - Save as result.raw
#include "stdafx.h"
#include <fstream>
#include <iostream>

using namespace std;

// Size of the framebuffer
const unsigned int SIZE = 512;

// A simple RGB struct will represent a pixel in the framebuffer
struct Pixel {
	// TODO: Define correct data type for r, g, b channel
	uint8_t r, g, b;
};

int main()
{
	// Initialize a framebuffer
	auto framebuffer = new Pixel[SIZE][SIZE];
	uint8_t treshholdMin = 20;
	uint8_t treshholdMax = 200;

	// TODO: Open file lena.raw (this is 512x512 RAW GRB format)
	FILE *fr = fopen("lena.raw", "r");

	// TODO: Read data to framebuffer and close the file
	fread(framebuffer, SIZE * SIZE * sizeof(Pixel), 1, fr);
	fclose(fr);

	// Traverse the framebuffer
	for (unsigned int y = 0; y < SIZE; y++) {
		for (unsigned int x = 0; x < SIZE; x++) {
			// TODO: Apply pixel operation



		}
	}

	// TODO: Open file result.raw
	cout << "Generating result.raw file ..." << endl;
	FILE *fw = fopen("result.raw", "w");

	// TODO: Write the framebuffer to the file and close it
	fwrite(framebuffer, SIZE * SIZE * sizeof(Pixel), 1, fw);
	fclose(fw);

	cout << "Done." << endl;
	delete[] framebuffer;
	return EXIT_SUCCESS;
}