/*
	CONSOLE QRCODE, COPYRIGHT@2017~2019 BY LEO, VERSION 1.0
	QR2.EXE
*/
#include <stdio.h>
#include <math.h>
#include <stdlib.h>
#include <string.h>
#include "QR_Encode.cpp"

#define BF_ZOOM	10
#define BF_MARGIN 10

//定义帮助说明
#define HELP_INFORMATION "\
QR2 version 1.0 - Console qrcode tool - Copyright (C) 2017-2019 by Leo\n\
\n\
Usage:\n\
    qr2 [your text]\n\
\n\
Official website:\n\
    http://www.bathome.net/thread-44143-1-1.html\n"

//定义BMP头
static unsigned char header[] =
{
	'B','M',  // magic number
	0,0,0,0,  // size in bytes (set below)
	0,0,0,0,  // reserved
	54,0,0,0, // offset to start of pixel data
	40,0,0,0, // info hd size
	0,0,0,0,  // image width (set below)
	0,0,0,0,  // image heigth (set below)
	1,0,      // number color planes
	24,0,     // bits per pixel
	0,0,0,0,  // compression is none
	0,0,0,0,  // image byte size
	0x13,0x0B,0,0, // horz resoluition in pixel / m
	0x13,0x0B,0,0, // vert resolutions (0x03C3 = 96 dpi, 0x0B13 = 72 dpi)
	0,0,0,0,  // #colors in pallete
	0,0,0,0,  // #important colors
};

//BMP头填充函数 
void CopyIntToAddress(int n, unsigned char bytes[])
{
	bytes[0] = n & 0xFF;
	bytes[1] = (n >>  8) & 0xFF;
	bytes[2] = (n >> 16) & 0xFF;
	bytes[3] = (n >> 24) & 0xFF;
}

//主函数入口
int main(int argc, char* argv[])
{
	if(argc!=2)
	{
		fprintf(stdout, HELP_INFORMATION);
		return 1;
	}

	char *pCodeStr=argv[1];
	CQR_Encode* pQR_Encode = new CQR_Encode;

	//生成QR二维码数据
	if (! pQR_Encode->EncodeData(QR_LEVEL_L, QR_VRESION_S, TRUE, -1,  pCodeStr))
	{
		fprintf(stdout, "Encode data error\n");
		return 1;
	}

	//根据生成的QR二进制数据 建立图片的长宽
	int qwith=pQR_Encode->m_nSymbleSize*BF_ZOOM+BF_MARGIN*2, qhigh=pQR_Encode->m_nSymbleSize*BF_ZOOM+BF_MARGIN*2;

	int pixelWidth = qwith;
	int pixelHeight = qhigh;
	int rowSize = pixelWidth*3;
	int rowPadding = (4-(rowSize%4))%4;
	rowSize += rowPadding;
	int pixelDataSize = rowSize*pixelHeight;
	int fileSize = 54 + pixelDataSize;

	//填充BMP头信息 
	CopyIntToAddress(fileSize, &header[2]);
	CopyIntToAddress(pixelWidth, &header[18]);
	CopyIntToAddress(pixelHeight, &header[22]);
	CopyIntToAddress(pixelDataSize, &header[34]);

	unsigned char* img= new unsigned char[pixelDataSize];
	memset(img, 0xFF, pixelDataSize);

	//遍历位图每个点
	for(int i=0; i <qwith; i++)
	{
		for(int j=0; j <qhigh; j++)
		{
			//如果位图中的点满足填充白色，则将该点像素值设为RGB(255,255,255)
			if(i<BF_MARGIN || i>=qwith-BF_MARGIN || j<BF_MARGIN || j>=qhigh-BF_MARGIN || !pQR_Encode->m_byModuleData[(i-BF_MARGIN)/BF_ZOOM][(j-BF_MARGIN)/BF_ZOOM])
			{

			}else{
				int offset = (i*3)+((pixelHeight-j)-1)*rowSize;
				img[offset  ] = (i+j)/2 + sin(i/10)*sin(j/10) *(255-(i+j)/2);
				img[offset+1] = j + sin(j/10)*sin((i+j)/20) *(255-j);
				img[offset+2] = i + sin((i+j)/20)* sin(i/10)*(255-i);

			}
		}
	}

	//保存QR图片为BMP格式
	FILE* fp = fopen(qr2.bmp", "wb");
	fwrite(header, 1, sizeof(header), fp);
	fwrite(img, 1, pixelDataSize, fp);
	fclose(fp);

	//释放内存
	delete pQR_Encode;
	delete img;

	return 0;
}
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