1.MFC-opencv配置:
新建一个空白项目,点击项目(菜单项)-属性-VC++目录,按照下图提示,添加目录:
可执行文件目录D:\Program Files\opencv\build\x86\vc10\bin
包含目录D:\Program Files\opencv\build\include
D:\Program Files\opencv\build\include\opencv
D:\Program Files\opencv\build\include\opencv2
库目录D:\Program Files\opencv\build\x86\vc10\lib (本人64位机选64位错误,海康的也要选x86的lib,原因不懂,小白阶段)
配置连接器:项目(菜单项)->…属性->连接器->输入->附加依赖项(Debug版本,Release的**.lib),遇到无法解析的外部符号一般是忘了添加lib了。以下仅为opencv的lib,海康的lib自行脑补。
2. 捕获实时流,将实时流解码成YV12,然后转换成RGB(转自http://blog.youkuaiyun.com/wanghuiqi2008/article/details/31410509)
- #include <cstdio>
- #include <cstring>
- #include <iostream>
- #include "Windows.h"
- #include "HCNetSDK.h"
- #include "PlayM4.h"
- #include <opencv2\opencv.hpp>
- #include "cv.h"
- #include "highgui.h"
- #include <time.h>
- #define USECOLOR 1
- using namespace std;
- using namespace std;
- //--------------------------------------------
- int iPicNum=0;//Set channel NO.
- LONG nPort=-1;
- HWND hWnd=NULL;
- void yv12toYUV(char *outYuv, char *inYv12, int width, int height,int widthStep)
- {
- int col,row;
- unsigned int Y,U,V;
- int tmp;
- int idx;
- //printf("widthStep=%d.\n",widthStep);
- for (row=0; row<height; row++)
- {
- idx=row * widthStep;
- int rowptr=row*width;
- for (col=0; col<width; col++)
- {
- //int colhalf=col>>1;
- tmp = (row/2)*(width/2)+(col/2);
- // if((row==1)&&( col>=1400 &&col<=1600))
- // {
- // printf("col=%d,row=%d,width=%d,tmp=%d.\n",col,row,width,tmp);
- // printf("row*width+col=%d,width*height+width*height/4+tmp=%d,width*height+tmp=%d.\n",row*width+col,width*height+width*height/4+tmp,width*height+tmp);
- // }
- Y=(unsigned int) inYv12[row*width+col];
- U=(unsigned int) inYv12[width*height+width*height/4+tmp];
- V=(unsigned int) inYv12[width*height+tmp];
- // if ((col==200))
- // {
- // printf("col=%d,row=%d,width=%d,tmp=%d.\n",col,row,width,tmp);
- // printf("width*height+width*height/4+tmp=%d.\n",width*height+width*height/4+tmp);
- // return ;
- // }
- if((idx+col*3+2)> (1200 * widthStep))
- {
- //printf("row * widthStep=%d,idx+col*3+2=%d.\n",1200 * widthStep,idx+col*3+2);
- }
- outYuv[idx+col*3] = Y;
- outYuv[idx+col*3+1] = U;
- outYuv[idx+col*3+2] = V;
- }
- }
- //printf("col=%d,row=%d.\n",col,row);
- }
- //解码回调 视频为YUV数据(YV12),音频为PCM数据
- void CALLBACK DecCBFun(long nPort,char * pBuf,long nSize,FRAME_INFO * pFrameInfo, long nReserved1,long nReserved2)
- {
- long lFrameType = pFrameInfo->nType;
- if(lFrameType ==T_YV12)
- {
- #if USECOLOR
- //int start = clock();
- IplImage* pImgYCrCb = cvCreateImage(cvSize(pFrameInfo->nWidth,pFrameInfo->nHeight), 8, 3);//得到图像的Y分量
- yv12toYUV(pImgYCrCb->imageData, pBuf, pFrameInfo->nWidth,pFrameInfo->nHeight,pImgYCrCb->widthStep);//得到全部RGB图像
- IplImage* pImg = cvCreateImage(cvSize(pFrameInfo->nWidth,pFrameInfo->nHeight), 8, 3);
- cvCvtColor(pImgYCrCb,pImg,CV_YCrCb2RGB);
- //int end = clock();
- #else
- IplImage* pImg = cvCreateImage(cvSize(pFrameInfo->nWidth,pFrameInfo->nHeight), 8, 1);
- memcpy(pImg->imageData,pBuf,pFrameInfo->nWidth*pFrameInfo->nHeight);
- #endif
- //printf("%d\n",end-start);
- cvShowImage("IPCamera",pImg);
- cvWaitKey(1);
- #if USECOLOR
- cvReleaseImage(&pImgYCrCb);
- cvReleaseImage(&pImg);
- #else
- cvReleaseImage(&pImg);
- #endif
- //此时是YV12格式的视频数据,保存在pBuf中,可以fwrite(pBuf,nSize,1,Videofile);
- //fwrite(pBuf,nSize,1,fp);
- }
- /***************
- else if (lFrameType ==T_AUDIO16)
- {
- //此时是音频数据,数据保存在pBuf中,可以fwrite(pBuf,nSize,1,Audiofile);
- }
- else
- {
- }
- *******************/
- }
- ///实时流回调
- void CALLBACK fRealDataCallBack(LONG lRealHandle,DWORD dwDataType,BYTE *pBuffer,DWORD dwBufSize,void *pUser)
- {
- 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_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,hWnd))
- {
- 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;
- case NET_DVR_STREAMDATA: //码流数据
- if (dwBufSize > 0 && nPort != -1)
- {
- BOOL inData=PlayM4_InputData(nPort,pBuffer,dwBufSize);
- while (!inData)
- {
- Sleep(10);
- inData=PlayM4_InputData(nPort,pBuffer,dwBufSize);
- OutputDebugString(L"PlayM4_InputData failed \n");
- }
- }
- break;
- }
- }
- void CALLBACK g_ExceptionCallBack(DWORD dwType, LONG lUserID, LONG lHandle, void *pUser)
- {
- char tempbuf[256] = {0};
- switch(dwType)
- {
- case EXCEPTION_RECONNECT: //预览时重连
- printf("----------reconnect--------%d\n", time(NULL));
- break;
- default:
- break;
- }
- }
- void main() {
- //---------------------------------------
- // 初始化
- NET_DVR_Init();
- //设置连接时间与重连时间
- NET_DVR_SetConnectTime(2000, 1);
- NET_DVR_SetReconnect(10000, true);
- //---------------------------------------
- // 获取控制台窗口句柄
- //HMODULE hKernel32 = GetModuleHandle((LPCWSTR)"kernel32");
- //GetConsoleWindow = (PROCGETCONSOLEWINDOW)GetProcAddress(hKernel32,"GetConsoleWindow");
- //---------------------------------------
- // 注册设备
- LONG lUserID;
- NET_DVR_DEVICEINFO_V30 struDeviceInfo;
- lUserID = NET_DVR_Login_V30("10.102.7.88", 8000, "admin", "12345", &struDeviceInfo);
- if (lUserID < 0)
- {
- printf("Login error, %d\n", NET_DVR_GetLastError());
- NET_DVR_Cleanup();
- return;
- }
- //---------------------------------------
- //设置异常消息回调函数
- NET_DVR_SetExceptionCallBack_V30(0, NULL,g_ExceptionCallBack, NULL);
- //cvNamedWindow("IPCamera");
- //---------------------------------------
- //启动预览并设置回调数据流
- NET_DVR_CLIENTINFO ClientInfo;
- ClientInfo.lChannel = 1; //Channel number 设备通道号
- ClientInfo.hPlayWnd = NULL; //窗口为空,设备SDK不解码只取流
- ClientInfo.lLinkMode = 0; //Main Stream
- ClientInfo.sMultiCastIP = NULL;
- LONG lRealPlayHandle;
- lRealPlayHandle = NET_DVR_RealPlay_V30(lUserID,&ClientInfo,fRealDataCallBack,NULL,TRUE);
- if (lRealPlayHandle<0)
- {
- printf("NET_DVR_RealPlay_V30 failed! Error number: %d\n",NET_DVR_GetLastError());
- return;
- }
- //cvWaitKey(0);
- Sleep(-1);
- //fclose(fp);
- //---------------------------------------
- //关闭预览
- if(!NET_DVR_StopRealPlay(lRealPlayHandle))
- {
- printf("NET_DVR_StopRealPlay error! Error number: %d\n",NET_DVR_GetLastError());
- return;
- }
- //注销用户
- NET_DVR_Logout(lUserID);
- NET_DVR_Cleanup();
- return;
- }
终于能够实时捕获图像了,而且转换成了OpenCV能够处理的图像格式。
在这个过程中搜了很多资料,但是没有一个地方能详细说明,不过最终还是把这个给解决了。
附加说明:如果最后要做图像处理而不是像我这样只是将采集的图像显示出来,那么下面的语句是不需要的。
- #if USECOLOR
- cvReleaseImage(&pImgYCrCb);
- cvReleaseImage(&pImg);
- #else
- cvReleaseImage(&pImg);
- #endif