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#include "BMPImage.h"

#include <cstdint>
#include <iostream>

using std::cout, std::endl;

namespace TehImage
{

	int BMPImage::readFromFile(std::string filename)
	{
		cout << "Not implemented" << endl;
		return 2;
	};

	int BMPImage::writeToFile(std::string filename)
	{
		FILE* fd = fopen(filename.c_str(), "w");
		char magic[] = "BM";
		uint32_t fileSize = 14 + 12 + width*height*/*(bitDepth/8)*/8*3;
		char zero[] = "\0\0\0\0";
		uint32_t offset = 26;
		uint32_t headerSize = 12;
		uint16_t width = this->width;
		uint16_t height = this->height;
		uint16_t colorPlanes = 1;
		uint16_t bitsPerPixel = /*bitDepth*/8*3;
	
		fwrite(magic, sizeof(char), 2, fd);
		fwrite(&fileSize, sizeof(uint32_t), 1, fd);
		fwrite(zero, sizeof(char), 4, fd);
		fwrite(&offset, sizeof(uint32_t), 1, fd);
		fwrite(&headerSize, sizeof(uint32_t), 1, fd);

		fwrite(&width, sizeof(uint16_t), 1, fd);
		fwrite(&height, sizeof(uint16_t), 1, fd);
		fwrite(&colorPlanes, sizeof(uint16_t), 1, fd);
		fwrite(&bitsPerPixel, sizeof(uint16_t), 1, fd);

		for(int y = height-1; y >= 0; y--)
		{
			for(int x = 0; x < width; x++)
			{
				Pixel& pixel = (*this)[x,y];
				fwrite(&pixel.b, sizeof(uint8_t), 1, fd);
				fwrite(&pixel.g, sizeof(uint8_t), 1, fd);
				fwrite(&pixel.r, sizeof(uint8_t), 1, fd);
			}
		}

		fclose(fd);
	
		return 0;
	};

}