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：http://www.hikvision.com/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/opencv_projects/CH_HCNetSDK_V5.2.7.4_build20170606_Linux64/incCn
LIBS += /home/ding/opencv_projects/CH_HCNetSDK_V5.2.7.4_build20170606_Linux64/lib/libhcnetsdk.so\
/home/ding/opencv_projects/CH_HCNetSDK_V5.2.7.4_build20170606_Linux64/lib/libHCCore.so\
/home/ding/opencv_projects/CH_HCNetSDK_V5.2.7.4_build20170606_Linux64/lib/libhpr.so\
/home/ding/opencv_projects/CH_HCNetSDK_V5.2.7.4_build20170606_Linux64/lib/libhpr.so\
/home/ding/opencv_projects/CH_HCNetSDK_V5.2.7.4_build20170606_Linux64/lib/libPlayCtrl.so\
/home/ding/opencv_projects/CH_HCNetSDK_V5.2.7.4_build20170606_Linux64/lib/libSuperRender.so\
/home/ding/opencv_projects/CH_HCNetSDK_V5.2.7.4_build20170606_Linux64/lib/libAudioRender.so
2. 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_OK 0
#define USECOLOR 0
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(99999);
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;
}