c++调用lz4库的函数提示未找到标识符

cardus 2018-08-08 09:50:35

很久没接触c++了，环境win10，IDE：VS2017
在cpp中调用lz4库的LZ4_decompress_safe函数，项目lib文件配置好了，代码补全里也有该函数，头文件lz4.h通过附加包含目录引入，
lib文件配置如图

用ctrl也能点进定义里，但是还是报找不到LZ4_decompress_safe这个标识符
代码如下

#include "lz4.h"

#include "zlib.h"

#include "stdafx.h"

#include <string>

#include <io.h>

#include <direct.h>

struct st_NpkHeader

{

	int _magic;//    					[_offset + 0]

	int _count;//    					[_offset + 4]	size(count * 28)	

	int _unknonw2;

	int _unknonw3;

	int _bUseTrunkCompressType;

	int _offset;

};



struct st_NpkTrunk

{

	int _trunkHash;

	int _dataOffset;

	int _compressSize;

	int _realSize;

	int _unknown1;

	int _unknonw2;

	int _compressType;

};

std::string GetNpkFileName(char *pData, unsigned int maxLen)

{

	std::string name;

	for (int i = 0; i < maxLen; ++i)

	{

		if ((pData[i] >= 'a' && pData[i] <= 'z')

			|| (pData[i] >= 'A' && pData[i] <= 'Z'))

		{

			name += pData[i];

		}

	}

	return name;

}

int _tmain(int argc, char* argv[])

{

	if (argc < 2)

	{

		printf("%s npkFile\n", argv[0]);

		return 0;

	}

	FILE *fp = fopen(argv[1], "rb");

	if (!fp)

	{

		return 0;

	}

	unsigned int nFileLen = 0;

	fseek(fp, 0, SEEK_END); //定位到文件末

	nFileLen = ftell(fp); //文件长度 



	fseek(fp, 0, SEEK_SET);



	st_NpkHeader npkHeader;

	fread(&npkHeader, sizeof(npkHeader), 1, fp);

	if (npkHeader._magic != 0x4b50584e)

	{

		printf("not npk file\n");

		return 0;

	}

	fseek(fp, 0, SEEK_SET);



	st_NpkTrunk* pNpkTrunkList = new st_NpkTrunk[npkHeader._count];

	std::string strDir = "./Dump";

	if (_access(strDir.c_str(), 0) != 0)

	{

		_mkdir(strDir.c_str());

	}

	fseek(fp, npkHeader._offset, SEEK_SET);

	int nRSize = fread(pNpkTrunkList, sizeof(st_NpkTrunk), npkHeader._count, fp);

	for (int i = 0; i < nRSize; ++i)

	{

		fseek(fp, pNpkTrunkList[i]._dataOffset, SEEK_SET);

		char *pSrc = new char[pNpkTrunkList[i]._compressSize];

		fread(pSrc, pNpkTrunkList[i]._compressSize, 1, fp);

		char *pDst = new char[pNpkTrunkList[i]._realSize];

		if (pNpkTrunkList[i]._compressType == 2)

		{			

		   LZ4_decompress_safe(pSrc, pDst, pNpkTrunkList[i]._compressSize, pNpkTrunkList[i]._realSize);

		}

		else if (pNpkTrunkList[i]._compressType == 1)

		{

			int realSize = pNpkTrunkList[i]._realSize;

			int nRet = uncompress((Bytef *)pDst, (uLongf*)&realSize, (Bytef *)pSrc, pNpkTrunkList[i]._compressSize);

		}

		else

		{

			memcpy(pDst, pSrc, pNpkTrunkList[i]._realSize);

		}

		char fileName[126];

		std::string format = GetNpkFileName(pDst, 5);

		sprintf_s<126>(fileName, "%s/%x.%s", strDir.c_str(), pNpkTrunkList[i]._trunkHash, format.c_str());

		FILE *fp2 = fopen(fileName, "wb");

		fwrite(pDst, pNpkTrunkList[i]._realSize, 1, fp2);

		fclose(fp2);



		delete[] pSrc;

		delete[] pDst;

	}

	return 0;

}