参数bin文件读入结构体

1. 定义结构体

typedef struct test_cfg {
	unsigned char version[4];
	unsigned char golden_f0;
	unsigned short low_map_freq;
	unsigned short high_map_freq;
}test_cfg_t;

txt配置如下：

0x01, // version，V1.1.9.38
0x01,
0x09,
0x26,

0xB4, //golden_f0		170HZ

0x78, //low_map_freq	120HZ
0x00,

0xdc, // high_map_freq	220HZ
0x00,

 txt转bin后，将bin文件读入结构体，然后打印结构体各变量接收到的结果如下：

version[0]		0x01	1
version[1]		0x01	1
version[1]		0x09	9
version[1]		0x26	38
golden_f0		0xB4	180
		0x78
low_map_freq		0x00	56320
		0xdc
high_map_freq		0x00	52224
		0xcc(该地址没申请，默认值为cc)

上述结构体定义有问题，需考虑结构体字节对齐，否则将bin文件对结构体会出现错乱问题，一定要注意。

调整结构体结构如下：

typedef struct test_cfg {
	unsigned char version[4];
	unsigned short low_map_freq;
	unsigned short high_map_freq;
	unsigned char golden_f0;
}test_cfg_t;

txt配置如下：

0x01, // version，V1.1.9.38
0x01,
0x09,
0x26,

0x78, //low_map_freq	120HZ
0x00,

0xdc, // high_map_freq	220HZ
0x00,

0xB4, //golden_f0		170HZ

结果如下：

具体实现步骤如下：

• 1. 定义接收参数的结构体结构及变量；
• 2. 配置参数配置文件txt文件；
• 3. 按行读取txt文件，通过字符串分割将目标去除保存到新的txt文件；
• 4. 将纯净版txt文件保存成bin文件；
• 5. 将bin文件读入到结构体指针；
• 6. 打印结构体中各成员变量接收到的参数；

main.h

#include<iostream>
#include<fstream>
#include<string>
#include<vector>
using namespace std;
typedef struct test_cfg {
	unsigned char version[4];
	unsigned short low_map_freq;
	unsigned short high_map_freq;
	unsigned char golden_f0;
}test_cfg_t;

// String Split
vector<string> split(const string &str, const string &pattern)
{
	//const char* convert to char*
	char * strc = new char[strlen(str.c_str()) + 1];
	strcpy(strc, str.c_str());
	vector<string> resultVec;
	char* tmpStr = strtok(strc, pattern.c_str());
	while (tmpStr != NULL)
	{
		resultVec.push_back(std::string(tmpStr));
		tmpStr = strtok(NULL, pattern.c_str());
	}
	delete[] strc;
	return resultVec;
};

// Read txt by line
int read_txt_lines(const char* path, const char* dst_path)
{
	ifstream ifs(path);    
	ofstream ofs(dst_path); 
	string line;
	int rows = 0;
	while (getline(ifs, line)) 
	{
		vector<string>str_vector;
		str_vector = split(line, ",");
		if (!str_vector.empty()) {
			ofs << str_vector[0] << '\n';
			rows++;
		}
	}
	ifs.close();
	ofs.close();
	return rows;
}

int read_raw_hex_data(const char* path, int data_length, uint8_t * a) {
	FILE* fpRead = NULL;
	int ret = 0;
	int i = 0;
	fopen_s(&fpRead, path, "r");
	if (fpRead == NULL)
	{
		printf("Fail to read raw data file!");
		ret = -1;
		return ret;
	}

	for (i = 0; i < data_length; i++)
	{
		fscanf_s(fpRead, "%x", &a[i]);
	}
	fclose(fpRead);

	return ret;
}

void writeBin(std::string path, char *buf, int size)
{
	std::ofstream outfile(path, std::ifstream::binary);
	outfile.write((char *)(buf), size);
	outfile.close();
}

void read_bin_params(const char* bin_path, test_cfg_t *test_cfg_p)
{
	FILE* fp = fopen(bin_path, "rb");
	fseek(fp, 0, SEEK_SET);
	fread(test_cfg_p, sizeof(test_cfg_t), 1, fp);
	fclose(fp);
}

main.cpp

#include<iostream>
#include "main.h"
using namespace std;

int main()
{
	const char *path = "C:\\Users\\TongXiaoBin\\Desktop\\c++_test\\test.txt";
	const char *dst_path = "C:\\Users\\TongXiaoBin\\Desktop\\c++_test\\test_clean.txt";
	const char* bin_path = "C:\\Users\\TongXiaoBin\\Desktop\\c++_test\\test.bin";
	// 获得纯净版txt文件
    int rows = read_txt_lines(path, dst_path);

	// txt转bin文件
    uint8_t *data = (uint8_t *)malloc(rows);
	read_raw_hex_data(dst_path, rows, data);
	writeBin(bin_path, (char*)data, rows);

    // 将bin参数读入到算法结构体中
	test_cfg_t test_cfg_s;
	read_bin_params(bin_path, &test_cfg_s);
   
	for (int i = 0; i < 4; i++) {
		cout << (int)test_cfg_s.version[i] << endl;
	}		
	cout<<(int)test_cfg_s.low_map_freq<< endl;
	cout<<(int)test_cfg_s.high_map_freq<< endl;
	cout << (int)test_cfg_s.golden_f0 << endl;
}