bmp

void ReadBMP(string filename)
{
	FILE* fileOpen = fopen(filename.c_str(), "rb");

	if (fileOpen == NULL)
		throw "Argument Exception";

	fread(info, sizeof(unsigned char), 54, fileOpen); // read the 54-byte header

	width = *(int*)&info[18];
	height = *(int*)&info[22];

	int max_value, temp_value;
	for (int i = 1; i < width; i++)
	{
		temp_value = GCD(i, width);
		if (temp_value > max_value)
			max_value = temp_value;
	}

	int row_padded = (width * 3 + 3) & (~3);
	unsigned char* data = new unsigned char[row_padded];
	unsigned char tempPixel;

	img.width = width;
	img.height = height;
	img.pixels = new int[height * width * 3];

	cpuImage.width = width;
	cpuImage.height = height;
	cpuImage.pixels = new int[height * width * 3];

	gpuImage.width = width;
	gpuImage.height = height;
	gpuImage.pixels = new int[height * width * 3];

	N = width * height * 3;

	for (int i = 0; i < height; i++)
	{
		fread(data, sizeof(unsigned char), row_padded, fileOpen);
		for (int j = 0; j < width * 3; j += 3)
		{
			tempPixel = data[j];
			data[j] = data[j + 2];
			data[j + 2] = tempPixel;
			img.pixels[i * width * 3 + (j / 3) * 3 + 0] = (int)data[j];
			img.pixels[i * width * 3 + (j / 3) * 3 + 1] = (int)data[j + 1];
			img.pixels[i * width * 3 + (j / 3) * 3 + 2] = (int)data[j + 2];

		}
	}

	fclose(fileOpen);
}