经过很多天的配置，终于能在工程中调用海康威视的网络摄像头了，为了后人能快速上手，我整理内容如下：
在本文中我的电脑是使用的Ubuntu16.04 64位，使用工具是QT5.7.1，opencv2.4.9.
一、根据电脑的型号下载海康威视的SDK包
网址：/cn/download_61.html。
我的笔记本时linux64位的，所以下载的 ————设备网络SDK_Linux64
二、 用下面的方法之一配置SDK
如果HCNetSDKCom目录以及libhcnetsdk.so、libhpr.so、libHCCore文件和可执行文件在同一级目录下，则使用同级目录下的库文件;
如果不在同一级目录下，则需要将以上文件的目录加载到动态库搜索路径中，设置的方式有以下几种:
1. 将网络SDK各动态库路径加入到LD_LIBRARY_PATH环境变量
1.在终端输入：export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/XXX:/XXX/HCNetSDKCom 只在当前终端起作用
2. 修改~/.bashrc或~/.bash_profile，最后一行添加 export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/XXX:/XXX/HCNetSDKCom，保存之后，使用source .bashrc执行该文件 ，当前用户生效
3. 修改/etc/profile，添加内容如第2条，同样保存之后使用source执行该文件 所有用户生效
2．在/etc/ld.so.conf文件结尾添加网络sdk库的路径，如/XXX和/XXX/HCNetSDKCom/，保存之后，然后执行ldconfig。
三. 在Ubuntu16.04 的qt中新建一个工程
1. 在工程的 ×.pro文件中添加以下内容：
INCLUDEPATH += /usr/local/include \/usr/local/include/opencv \/usr/local/include/opencv2
LIBS += /usr/local/lib/libopencv_calib3d.so
/usr/local/lib/libopencv_ml.so.2.4.9
/usr/local/lib/libopencv_calib3d.so.2.4
/usr/local/lib/libopencv_nonfree.so
/usr/local/lib/libopencv_calib3d.so.2.4.9
/usr/local/lib/libopencv_nonfree.so.2.4
/usr/local/lib/libopencv_contrib.so
/usr/local/lib/libopencv_nonfree.so.2.4.9
/usr/local/lib/libopencv_contrib.so.2.4
/usr/local/lib/libopencv_objdetect.so
/usr/local/lib/libopencv_contrib.so.2.4.9
/usr/local/lib/libopencv_objdetect.so.2.4
/usr/local/lib/libopencv_core.so
/usr/local/lib/libopencv_objdetect.so.2.4.9
/usr/local/lib/libopencv_core.so.2.4
/usr/local/lib/libopencv_ocl.so
/usr/local/lib/libopencv_core.so.2.4.9
/usr/local/lib/libopencv_ocl.so.2.4
/usr/local/lib/libopencv_features2d.so
/usr/local/lib/libopencv_ocl.so.2.4.9
/usr/local/lib/libopencv_features2d.so.2.4
/usr/local/lib/libopencv_photo.so
/usr/local/lib/libopencv_features2d.so.2.4.9
/usr/local/lib/libopencv_photo.so.2.4
/usr/local/lib/libopencv_flann.so
/usr/local/lib/libopencv_photo.so.2.4.9
/usr/local/lib/libopencv_flann.so.2.4
/usr/local/lib/libopencv_stitching.so
/usr/local/lib/libopencv_flann.so.2.4.9
/usr/local/lib/libopencv_stitching.so.2.4
/usr/local/lib/libopencv_gpu.so
/usr/local/lib/libopencv_stitching.so.2.4.9
/usr/local/lib/libopencv_gpu.so.2.4
/usr/local/lib/libopencv_superres.so
/usr/local/lib/libopencv_gpu.so.2.4.9
/usr/local/lib/libopencv_superres.so.2.4
/usr/local/lib/libopencv_highgui.so
/usr/local/lib/libopencv_superres.so.2.4.9
/usr/local/lib/libopencv_highgui.so.2.4
/usr/local/lib/libopencv_highgui.so.2.4.9
/usr/local/lib/libopencv_video.so
/usr/local/lib/libopencv_imgproc.so
/usr/local/lib/libopencv_video.so.2.4
/usr/local/lib/libopencv_imgproc.so.2.4
/usr/local/lib/libopencv_video.so.2.4.9
/usr/local/lib/libopencv_imgproc.so.2.4.9
/usr/local/lib/libopencv_videostab.so
/usr/local/lib/libopencv_legacy.so
/usr/local/lib/libopencv_videostab.so.2.4
/usr/local/lib/libopencv_legacy.so.2.4
/usr/local/lib/libopencv_videostab.so.2.4.9
/usr/local/lib/libopencv_legacy.so.2.4.9
/usr/local/lib/libopencv_ml.so
INCLUDEPATH += /home/ding/opencvprojects/CH_HCNetSDK_V5.2.7.4build0606_Linux64/incCn
LIBS += /home/ding/opencv_projects/CH_HCNetSDK_V5.2.7.4_build0606_Linux64/lib/libhcnetsdk.so</span>
/home/ding/opencv_projects/CH_HCNetSDK_V5.2.7.4_build0606_Linux64/lib/libHCCore.so</span>
/home/ding/opencv_projects/CH_HCNetSDK_V5.2.7.4_build0606_Linux64/lib/libhpr.so</span>
/home/ding/opencv_projects/CH_HCNetSDK_V5.2.7.4_build0606_Linux64/lib/libPlayCtrl.so</span>
/home/ding/opencv_projects/CH_HCNetSDK_V5.2.7.4_build0606_Linux64/lib/libSuperRender.so</span>
/home/ding/opencv_projects/CH_HCNetSDK_V5.2.7.4_build0606_Linux64/lib/libAudioRender.so2. 在main.cpp函数中添加以下内容：
#include "opencv2/opencv.hpp" #include <QDir>#include <fstream>#include <unistd.h>//#include "auto_entercs.h" #include "HCNetSDK.h"#include "PlayM4.h"#include "LinuxPlayM4.h" #define HPR_ERROR -1#define HPR_OK0#define USECOLOR0 static cv::Mat dst;HWND h = NULL;LONG nPort=-1;LONG lUserID; pthread_mutex_t mutex;std::list<cv::Mat> g_frameList; FILE *g_pFile = NULL; void CALLBACK PsDataCallBack(LONG lRealHandle, DWORD dwDataType,BYTE *pPacketBuffer,DWORD nPacketSize, void* pUser){ if (dwDataType == NET_DVR_SYSHEAD){ //写入头数据g_pFile = fopen("/home/lds/source/ps.dat", "wb"); if (g_pFile == NULL){ printf("CreateFileHead fail\n"); return;} //写入头数据fwrite(pPacketBuffer, sizeof(unsigned char), nPacketSize, g_pFile); printf("write head len=%d\n", nPacketSize);} else{ if(g_pFile != NULL){fwrite(pPacketBuffer, sizeof(unsigned char), nPacketSize, g_pFile); printf("write data len=%d\n", nPacketSize);}} } //void CALLBACK DecCBFun(LONG nPort, char *pBuf, LONG nSize, FRAME_INFO *pFrameInfo, LONG nReserved1, LONG nReserved2)void CALLBACK DecCBFun(LONG nPort, char *pBuf, LONG nSize, FRAME_INFO *pFrameInfo, void* nReserved1, LONG nReserved2){ long lFrameType = pFrameInfo->nType;if (lFrameType == T_YV12){//cv::Mat dst(pFrameInfo->nHeight, pFrameInfo->nWidth,// CV_8UC3); // 8UC3表示8bit uchar无符号类型,3通道值dst.create(pFrameInfo->nHeight, pFrameInfo->nWidth,CV_8UC3); cv::Mat src(pFrameInfo->nHeight + pFrameInfo->nHeight / 2, pFrameInfo->nWidth, CV_8UC1, (uchar *)pBuf);cv::cvtColor(src, dst, CV_YUV2BGR_YV12);pthread_mutex_lock(&mutex);g_frameList.push_back(dst);pthread_mutex_unlock(&mutex);}usleep(1000); //cv::Mat src(pFrameInfo->nHeight + pFrameInfo->nHeight / 2, pFrameInfo->nWidth, CV_8UC1, (uchar *)pBuf); //cv::cvtColor(src, dst, CV_YUV2BGR_YV12); //cv::imshow("bgr", dst); //pthread_mutex_lock(&mutex); //g_frameList.push_back(dst); //pthread_mutex_unlock(&mutex); //vw << dst; //cv::waitKey(10); } void CALLBACK g_RealDataCallBack_V30(LONG lRealHandle, DWORD dwDataType, BYTE *pBuffer, DWORD dwBufSize,void* dwUser){ /* if (dwDataType == 1) {PlayM4_GetPort(&nPort); PlayM4_SetStreamOpenMode(nPort, STREAME_REALTIME); PlayM4_OpenStream(nPort, pBuffer, dwBufSize, 1024 * 1024); PlayM4_SetDecCallBackEx(nPort, DecCBFun, NULL, NULL); PlayM4_Play(nPort, h); } else {BOOL inData = PlayM4_InputData(nPort, pBuffer, dwBufSize); }*/DWORD dRet; switch (dwDataType){case NET_DVR_SYSHEAD: //系统头 if (!PlayM4_GetPort(&nPort)) //获取播放库未使用的通道号{ break;} if (dwBufSize > 0) { if (!PlayM4_SetStreamOpenMode(nPort, STREAME_REALTIME)) {dRet = PlayM4_GetLastError(nPort); break;} if (!PlayM4_OpenStream(nPort, pBuffer, dwBufSize, 1024 * 1024)) {dRet = PlayM4_GetLastError(nPort); break;} //设置解码回调函数 只解码不显示 // if (!PlayM4_SetDecCallBack(nPort, DecCBFun)) {//dRet = PlayM4_GetLastError(nPort); //break; // }//设置解码回调函数 解码且显示 if (!PlayM4_SetDecCallBackEx(nPort, DecCBFun, NULL, NULL)){dRet = PlayM4_GetLastError(nPort); break;}//打开视频解码 if (!PlayM4_Play(nPort, h)){dRet = PlayM4_GetLastError(nPort); break;}//打开音频解码, 需要码流是复合流 if (!PlayM4_PlaySound(nPort)) {dRet = PlayM4_GetLastError(nPort); break;}} break; //usleep(500);case NET_DVR_STREAMDATA: //码流数据 if (dwBufSize > 0 && nPort != -1) {BOOL inData = PlayM4_InputData(nPort, pBuffer, dwBufSize); while (!inData) {sleep(100);inData = PlayM4_InputData(nPort, pBuffer, dwBufSize); std::cerr << "PlayM4_InputData failed \n" << std::endl;}} break;}} void CALLBACK g_ExceptionCallBack(DWORD dwType, LONG lUserID, LONG lHandle, void *pUser){ char tempbuf[256] = {0}; std::cout << "EXCEPTION_RECONNECT = " << EXCEPTION_RECONNECT << std::endl; switch(dwType){ case EXCEPTION_RECONNECT://预览时重连 printf("pyd----------reconnect--------%d\n", time(NULL)); break; default: break;}} void *RunIPCameraInfo(void *){ char IP[] = "192.168.**.***"; //海康威视网络摄像头的ip char UName[] = "****"; //海康威视网络摄像头的用户名 char PSW[]= "*****"; //海康威视网络摄像头的密码NET_DVR_Init();NET_DVR_SetConnectTime(2000, 1);NET_DVR_SetReconnect(1000, true);NET_DVR_SetLogToFile(3, "./sdkLog");NET_DVR_DEVICEINFO_V30 struDeviceInfo = {0};NET_DVR_SetRecvTimeOut(5000);lUserID = NET_DVR_Login_V30(IP, 8000, UName, PSW, &struDeviceInfo); NET_DVR_SetExceptionCallBack_V30(0, NULL, g_ExceptionCallBack, NULL); long lRealPlayHandle;NET_DVR_CLIENTINFO ClientInfo = {0}; ClientInfo.lChannel = 1;ClientInfo.lLinkMode= 0;ClientInfo.hPlayWnd= 0;ClientInfo.sMultiCastIP = NULL;//lRealPlayHandle = NET_DVR_RealPlay_V30(lUserID, &ClientInfo, PsDataCallBack, NULL, 0);lRealPlayHandle = NET_DVR_RealPlay_V30(lUserID, &ClientInfo, g_RealDataCallBack_V30, NULL, 0); //NET_DVR_SaveRealData(lRealPlayHandle, "/home/lds/source/yuntai.mp4"); if (lRealPlayHandle < 0){ printf("pyd1---NET_DVR_RealPlay_V30 error\n");}sleep(-1); NET_DVR_Cleanup();} int main(int argc, char *argv[]){ pthread_t getframe; pthread_mutex_init(&mutex, NULL); int ret; ret = pthread_create(&getframe, NULL, RunIPCameraInfo, NULL);if(ret!=0){ printf("Create pthread error!\n");} cv::Mat image; while(1){pthread_mutex_lock(&mutex); if(g_frameList.size()){ std::list<cv::Mat>::iterator it;it = g_frameList.end();it--;image = (*(it)); if (!image.empty()){imshow("frame from camera",image);cv::waitKey(1);}g_frameList.pop_front();}g_frameList.clear(); // 丢掉旧的帧pthread_mutex_unlock(&mutex);} return 0;}
