海康相机GrabImage

#include <stdio.h>
#include <Windows.h>
#include <process.h>
#include <conio.h>
#include "MvCameraControl.h"bool g_bExit = false;// ch:等待按键输入 | en:Wait for key press
void WaitForKeyPress(void)
{while(!_kbhit()){Sleep(10);}_getch();
}//相机参数
bool PrintDeviceInfo(MV_CC_DEVICE_INFO* pstMVDevInfo)
{if (NULL == pstMVDevInfo){printf("The Pointer of pstMVDevInfo is NULL!\n");return false;}if (pstMVDevInfo->nTLayerType == MV_GIGE_DEVICE){int nIp1 = ((pstMVDevInfo->SpecialInfo.stGigEInfo.nCurrentIp & 0xff000000) >> 24);int nIp2 = ((pstMVDevInfo->SpecialInfo.stGigEInfo.nCurrentIp & 0x00ff0000) >> 16);int nIp3 = ((pstMVDevInfo->SpecialInfo.stGigEInfo.nCurrentIp & 0x0000ff00) >> 8);int nIp4 = (pstMVDevInfo->SpecialInfo.stGigEInfo.nCurrentIp & 0x000000ff);// ch:打印当前相机ip和用户自定义名字 | en:print current ip and user defined nameprintf("CurrentIp: %d.%d.%d.%d\n" , nIp1, nIp2, nIp3, nIp4);printf("UserDefinedName: %s\n\n" , pstMVDevInfo->SpecialInfo.stGigEInfo.chUserDefinedName);}else if (pstMVDevInfo->nTLayerType == MV_USB_DEVICE){printf("UserDefinedName: %s\n", pstMVDevInfo->SpecialInfo.stUsb3VInfo.chUserDefinedName);printf("Serial Number: %s\n", pstMVDevInfo->SpecialInfo.stUsb3VInfo.chSerialNumber);printf("Device Number: %d\n\n", pstMVDevInfo->SpecialInfo.stUsb3VInfo.nDeviceNumber);}else{printf("Not support.\n");}return true;
}static  unsigned int __stdcall WorkThread(void* pUser)
{int nRet = MV_OK;MV_FRAME_OUT stOutFrame = {0};MV_DISPLAY_FRAME_INFO stDisplayInfo = { 0 };MV_DISPLAY_FRAME_INFO 成员变量//void *  hWnd  //窗口句柄//unsigned char *  pData //显示的数据 //unsigned int  nDataLen//数据长度 //unsigned short  nWidth//图像宽 //unsigned short  nHeight//图像高 //enum MvGvspPixelType  enPixelType//像素格式//unsigned int  nRes[4]//保留 HWND g_hwnd = GetForegroundWindow();//获取当前DOS窗口句柄while(true){nRet = MV_CC_GetImageBuffer(pUser, &stOutFrame, 1000);if (nRet == MV_OK){printf("Get Image Buffer: Width[%d], Height[%d], FrameNum[%d]\n",stOutFrame.stFrameInfo.nWidth, stOutFrame.stFrameInfo.nHeight, stOutFrame.stFrameInfo.nFrameNum);//将图片显示在DOS窗口上if (g_hwnd){stDisplayInfo.hWnd = g_hwnd;stDisplayInfo.pData = stOutFrame.pBufAddr;// 指向图像数据的指针stDisplayInfo.nDataLen = stOutFrame.stFrameInfo.nFrameLen;//数据长度 stDisplayInfo.nWidth = stOutFrame.stFrameInfo.nWidth;   // 图像的宽度（像素）stDisplayInfo.nHeight = stOutFrame.stFrameInfo.nHeight; // 图像的高度（像素）stDisplayInfo.enPixelType = stOutFrame.stFrameInfo.enPixelType;  // 像素类型，如黑白、RGB、Bayer等MV_CC_DisplayOneFrame(pUser, &stDisplayInfo);}nRet = MV_CC_FreeImageBuffer(pUser, &stOutFrame);if(nRet != MV_OK){printf("Free Image Buffer fail! nRet [0x%x]\n", nRet);}}else{printf("Get Image fail! nRet [0x%x]\n", nRet);}if(g_bExit){break;}}return 0;
}int main()
{int nRet = MV_OK;void* handle = NULL;do {// ch:枚举设备 | en:Enum deviceMV_CC_DEVICE_INFO_LIST stDeviceList;memset(&stDeviceList, 0, sizeof(MV_CC_DEVICE_INFO_LIST));nRet = MV_CC_EnumDevices(MV_GIGE_DEVICE | MV_USB_DEVICE, &stDeviceList);if (MV_OK != nRet){printf("Enum Devices fail! nRet [0x%x]\n", nRet);break;}if (stDeviceList.nDeviceNum > 0){for (unsigned int i = 0; i < stDeviceList.nDeviceNum; i++){printf("[device %d]:\n", i);MV_CC_DEVICE_INFO* pDeviceInfo = stDeviceList.pDeviceInfo[i];if (NULL == pDeviceInfo){break;} PrintDeviceInfo(pDeviceInfo);            }  } else{printf("Find No Devices!\n");break;}printf("Please Input camera index(0-%d):", stDeviceList.nDeviceNum-1);unsigned int nIndex = 0;scanf_s("%d", &nIndex);if (nIndex >= stDeviceList.nDeviceNum){printf("Input error!\n");break;}// ch:选择设备并创建句柄 | en:Select device and create handlenRet = MV_CC_CreateHandle(&handle, stDeviceList.pDeviceInfo[nIndex]);if (MV_OK != nRet){printf("Create Handle fail! nRet [0x%x]\n", nRet);break;}// ch:打开设备 | en:Open devicenRet = MV_CC_OpenDevice(handle);if (MV_OK != nRet){printf("Open Device fail! nRet [0x%x]\n", nRet);break;}// ch:探测网络最佳包大小(只对GigE相机有效) | en:Detection network optimal package size(It only works for the GigE camera)if (stDeviceList.pDeviceInfo[nIndex]->nTLayerType == MV_GIGE_DEVICE){int nPacketSize = MV_CC_GetOptimalPacketSize(handle);if (nPacketSize > 0){nRet = MV_CC_SetIntValue(handle,"GevSCPSPacketSize",nPacketSize);if(nRet != MV_OK){printf("Warning: Set Packet Size fail nRet [0x%x]!", nRet);}}else{printf("Warning: Get Packet Size fail nRet [0x%x]!", nPacketSize);}}// ch:设置触发模式为off | en:Set trigger mode as offnRet = MV_CC_SetEnumValue(handle, "TriggerMode", 0);if (MV_OK != nRet){printf("Set Trigger Mode fail! nRet [0x%x]\n", nRet);break;}// ch:开始取流 | en:Start grab imagenRet = MV_CC_StartGrabbing(handle);if (MV_OK != nRet){printf("Start Grabbing fail! nRet [0x%x]\n", nRet);break;}unsigned int nThreadID = 0;void* hThreadHandle = (void*) _beginthreadex( NULL , 0 , WorkThread , handle, 0 , &nThreadID );if (NULL == hThreadHandle){break;}//在C/C++编程中，_beginthreadex 是一个用于在Microsoft Visual Studio环境下创建线程的函数。//这个函数定义在<process.h>头文件中，它允许你在一个独立的线程中启动一个新的执行路径。下面是对给定代码行的解释：//NULL：这是线程属性指针，通常设置为NULL表示使用默认属性。//0：这是线程堆栈大小。如果设置为0，那么系统会根据默认值或编译器设置来决定堆栈大小。//WorkThread：这是指向线程函数的指针，当线程开始运行时，将从这里开始执行。//handle：这是传递给WorkThread函数的参数。当WorkThread被调用时，它的第一个参数将接收这个值。//0：这是线程的优先级增量。通常设置为0，意味着线程将具有默认的优先级。//&nThreadID：这是一个指向整型变量的指针，_beginthreadex函数将返回创建的新线程的ID到这个变量中。printf("Press a key to stop grabbing.\n");WaitForKeyPress();g_bExit = true;Sleep(1000);// ch:停止取流 | en:Stop grab imagenRet = MV_CC_StopGrabbing(handle);if (MV_OK != nRet){printf("Stop Grabbing fail! nRet [0x%x]\n", nRet);break;}// ch:关闭设备 | Close devicenRet = MV_CC_CloseDevice(handle);if (MV_OK != nRet){printf("ClosDevice fail! nRet [0x%x]\n", nRet);break;}// ch:销毁句柄 | Destroy handlenRet = MV_CC_DestroyHandle(handle);if (MV_OK != nRet){printf("Destroy Handle fail! nRet [0x%x]\n", nRet);break;}} while (0);if (nRet != MV_OK){if (handle != NULL){MV_CC_DestroyHandle(handle);handle = NULL;}}printf("Press a key to exit.\n");WaitForKeyPress();return 0;
}