程序说明： 程序将海康摄像头开发需要进行的操作封面到类HK_camera中，使用只需要在mian()函数中实例化HK_camera，将摄像头的IP，用户名，密码给对象即可使用。 程序调用接口的流程都是参考SDK开发文档，并做了简单的修改，有不明白或者觉得不对的地方希望可以给我留言，谢谢。
环境： 摄像机型号：CS-C1-11WPFR 电脑环境：32位 opencv版本：opencv 2.4.9 网络SDK开发包版本：CH-HCNetSDK(Windows32)V5.2.7.5_build20170217 播放SDK开发包版本：PlayCtrl_V7.3.2.50_win32_Build20160816
SDK说明： 播放和网络SDK都是我在官网上下载的，文件里有关于库的说明文档，还有实例程序的说明文档。
程序：
HK_camera.h
#pragma once #include "include\HCNetSDK.h" #include "include\PlayM4.h" #include "include\plaympeg4.h" #include <opencv2\core\core.hpp> #include <opencv2\highgui\highgui.hpp> #include <opencv2\imgproc\imgproc.hpp> using namespace cv; using namespace std; class HK_camera { public: HK_camera(void); ~HK_camera(void); public: bool Init(); //初始化 bool Login(char* sDeviceAddress, char* sUserName, char* sPassword, WORD wPort); //登陆 void show(); //显示图像 private: LONG lUserID; };HK_camera.cpp
#include "HK_camera.h" #include <iostream> //全局变量 LONG g_nPort; Mat g_BGRImage; void CALLBACK DecCBFun(long nPort, char* pBuf, long nSize, FRAME_INFO* pFrameInfo, long nUser, long nReserved2) { if(pFrameInfo->nType == T_YV12) { std::cout << "the frame infomation is T_YV12" << std::endl; if(g_BGRImage.empty()) { g_BGRImage.create(pFrameInfo->nHeight, pFrameInfo->nWidth, CV_8UC3); } Mat YUVImage(pFrameInfo->nHeight + pFrameInfo->nHeight/2, pFrameInfo->nWidth, CV_8UC1, (unsigned char*)pBuf); cvtColor(YUVImage, g_BGRImage, COLOR_YUV2BGR_YV12); imshow("RGBImage", g_BGRImage); waitKey(15); YUVImage.~Mat(); } } void CALLBACK g_RealDataCallBack_V30(LONG lPlayHandle, DWORD dwDataType, BYTE *pBuffer, DWORD dwBufSize, void* pUser) { if(dwDataType == NET_DVR_STREAMDATA) { if(dwBufSize > 0 && g_nPort != -1) { if(!PlayM4_InputData(g_nPort, pBuffer, dwBufSize)) { std::cout << "fail input data" << std::endl; } else { std::cout << "success input data" << std::endl; } } } } HK_camera::HK_camera(void) { } HK_camera::~HK_camera(void) { } bool HK_camera::Init() { if(NET_DVR_Init()) { return true; } else { return false; } } bool HK_camera::Login(char* sDeviceAddress, char* sUserName, char* sPassword, WORD wPort) { NET_DVR_USER_LOGIN_INFO pLoginInfo = {0}; NET_DVR_DEVICEINFO_V40 lpDeviceInfo = {0}; pLoginInfo.bUseAsynLogin = 0; //同步登录方式 strcpy(pLoginInfo.sDeviceAddress, sDeviceAddress); strcpy(pLoginInfo.sUserName, sUserName); strcpy(pLoginInfo.sPassword, sPassword); pLoginInfo.wPort = wPort; lUserID = NET_DVR_Login_V40(&pLoginInfo, &lpDeviceInfo); if(lUserID < 0) { return false; } else { return true; } } void HK_camera::show() { if(PlayM4_GetPort(&g_nPort)) //获取播放库通道号 { if(PlayM4_SetStreamOpenMode(g_nPort, STREAME_REALTIME)) //设置流模式 { if(PlayM4_OpenStream(g_nPort, NULL, 0, 1024*1024)) //打开流 { if(PlayM4_SetDecCallBackExMend(g_nPort, DecCBFun, NULL, 0, NULL)) { if(PlayM4_Play(g_nPort, NULL)) { std::cout << "success to set play mode" << std::endl; } else { std::cout << "fail to set play mode" << std::endl; } } else { std::cout << "fail to set dec callback " << std::endl; } } else { std::cout << "fail to open stream" << std::endl; } } else { std::cout << "fail to set stream open mode" << std::endl; } } else { std::cout << "fail to get port" << std::endl; } NET_DVR_PREVIEWINFO struPlayInfo = {0}; struPlayInfo.hPlayWnd = NULL; struPlayInfo.lChannel = 1; struPlayInfo.dwStreamType = 0; struPlayInfo.dwLinkMode = 0; struPlayInfo.bBlocked = 1; if(NET_DVR_RealPlay_V40(lUserID, &struPlayInfo, g_RealDataCallBack_V30, NULL)) { namedWindow("RGBImage"); } }main()函数调用方法：
#include "HK_camera.h" #include <iostream> #include <Windows.h> using namespace std; int main() { HK_camera camera; if(camera.Init()) { cout << "init success" << endl; if(camera.Login("192.168.0.15", "admin", "ULCGUX", 8000)) { cout << "login success" <<endl; camera.show(); } else { cout << "login fail" << endl; } } else { cout << "init fail" <<endl; } while(1) { } return 0; }补充：希望可以给大家开发带来便利和收获，谢谢您的阅读。
