Qt版海康MV多相机的采集显示程序

1. 创建对话框工程MultiCamera

工程文件MultiCamera.pro

#-------------------------------------------------
#
# Project created by QtCreator 2023-03-11T16:52:53
#
#-------------------------------------------------QT       += core guigreaterThan(QT_MAJOR_VERSION, 4): QT += widgetsTARGET = MultiCamera
TEMPLATE = app# The following define makes your compiler emit warnings if you use
# any feature of Qt which has been marked as deprecated (the exact warnings
# depend on your compiler). Please consult the documentation of the
# deprecated API in order to know how to port your code away from it.
DEFINES += QT_DEPRECATED_WARNINGS# You can also make your code fail to compile if you use deprecated APIs.
# In order to do so, uncomment the following line.
# You can also select to disable deprecated APIs only up to a certain version of Qt.
#DEFINES += QT_DISABLE_DEPRECATED_BEFORE=0x060000    # disables all the APIs deprecated before Qt 6.0.0CONFIG += c++11SOURCES += \main.cpp \multiplecameradlg.cppHEADERS += \multiplecameradlg.hFORMS += \multiplecameradlg.ui# Default rules for deployment.
qnx: target.path = /tmp/$${TARGET}/bin
else: unix:!android: target.path = /opt/$${TARGET}/bin
!isEmpty(target.path): INSTALLS += target

2. 添加海康相机类CMvCamera

将官方例子程序中的CMvCamera类实现的两个文件拷贝过来

CMvCamera.h

/************************************************************************/
/* 以C++接口为基础，对常用函数进行二次封装，方便用户使用                */
/************************************************************************/#ifndef _MV_CAMERA_H_
#define _MV_CAMERA_H_#include "MvCameraControl.h"
#include <string.h>#ifndef MV_NULL
#define MV_NULL    0
#endifclass CMvCamera
{
public:CMvCamera();~CMvCamera();// ch:获取SDK版本号 | en:Get SDK Versionstatic int GetSDKVersion();// ch:枚举设备 | en:Enumerate Devicestatic int EnumDevices(unsigned int nTLayerType, MV_CC_DEVICE_INFO_LIST* pstDevList);// ch:判断设备是否可达 | en:Is the device accessiblestatic bool IsDeviceAccessible(MV_CC_DEVICE_INFO* pstDevInfo, unsigned int nAccessMode);// ch:打开设备 | en:Open Deviceint Open(MV_CC_DEVICE_INFO* pstDeviceInfo);// ch:关闭设备 | en:Close Deviceint Close();// ch:判断相机是否处于连接状态 | en:Is The Device Connectedbool IsDeviceConnected();// ch:注册图像数据回调 | en:Register Image Data CallBackint RegisterImageCallBack(void(__stdcall* cbOutput)(unsigned char * pData, MV_FRAME_OUT_INFO_EX* pFrameInfo, void* pUser), void* pUser);// ch:开启抓图 | en:Start Grabbingint StartGrabbing();// ch:停止抓图 | en:Stop Grabbingint StopGrabbing();// ch:主动获取一帧图像数据 | en:Get one frame initiativelyint GetImageBuffer(MV_FRAME_OUT* pFrame, int nMsec);// ch:释放图像缓存 | en:Free image bufferint FreeImageBuffer(MV_FRAME_OUT* pFrame);// ch:显示一帧图像 | en:Display one frame imageint DisplayOneFrame(MV_DISPLAY_FRAME_INFO* pDisplayInfo);// ch:设置SDK内部图像缓存节点个数 | en:Set the number of the internal image cache nodes in SDKint SetImageNodeNum(unsigned int nNum);// ch:获取设备信息 | en:Get device informationint GetDeviceInfo(MV_CC_DEVICE_INFO* pstDevInfo);// ch:获取GEV相机的统计信息 | en:Get detect info of GEV cameraint GetGevAllMatchInfo(MV_MATCH_INFO_NET_DETECT* pMatchInfoNetDetect);// ch:获取U3V相机的统计信息 | en:Get detect info of U3V cameraint GetU3VAllMatchInfo(MV_MATCH_INFO_USB_DETECT* pMatchInfoUSBDetect);// ch:获取和设置Int型参数，如 Width和Height，详细内容参考SDK安装目录下的 MvCameraNode.xlsx 文件// en:Get Int type parameters, such as Width and Height, for details please refer to MvCameraNode.xlsx file under SDK installation directoryint GetIntValue(IN const char* strKey, OUT MVCC_INTVALUE_EX *pIntValue);int SetIntValue(IN const char* strKey, IN int64_t nValue);// ch:获取和设置Enum型参数，如 PixelFormat，详细内容参考SDK安装目录下的 MvCameraNode.xlsx 文件// en:Get Enum type parameters, such as PixelFormat, for details please refer to MvCameraNode.xlsx file under SDK installation directoryint GetEnumValue(IN const char* strKey, OUT MVCC_ENUMVALUE *pEnumValue);int SetEnumValue(IN const char* strKey, IN unsigned int nValue);int SetEnumValueByString(IN const char* strKey, IN const char* sValue);// ch:获取和设置Float型参数，如 ExposureTime和Gain，详细内容参考SDK安装目录下的 MvCameraNode.xlsx 文件// en:Get Float type parameters, such as ExposureTime and Gain, for details please refer to MvCameraNode.xlsx file under SDK installation directoryint GetFloatValue(IN const char* strKey, OUT MVCC_FLOATVALUE *pFloatValue);int SetFloatValue(IN const char* strKey, IN float fValue);// ch:获取和设置Bool型参数，如 ReverseX，详细内容参考SDK安装目录下的 MvCameraNode.xlsx 文件// en:Get Bool type parameters, such as ReverseX, for details please refer to MvCameraNode.xlsx file under SDK installation directoryint GetBoolValue(IN const char* strKey, OUT bool *pbValue);int SetBoolValue(IN const char* strKey, IN bool bValue);// ch:获取和设置String型参数，如 DeviceUserID，详细内容参考SDK安装目录下的 MvCameraNode.xlsx 文件UserSetSave// en:Get String type parameters, such as DeviceUserID, for details please refer to MvCameraNode.xlsx file under SDK installation directoryint GetStringValue(IN const char* strKey, MVCC_STRINGVALUE *pStringValue);int SetStringValue(IN const char* strKey, IN const char * strValue);// ch:执行一次Command型命令，如 UserSetSave，详细内容参考SDK安装目录下的 MvCameraNode.xlsx 文件// en:Execute Command once, such as UserSetSave, for details please refer to MvCameraNode.xlsx file under SDK installation directoryint CommandExecute(IN const char* strKey);// 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)int GetOptimalPacketSize(unsigned int* pOptimalPacketSize);// ch:注册消息异常回调 | en:Register Message Exception CallBackint RegisterExceptionCallBack(void(__stdcall* cbException)(unsigned int nMsgType, void* pUser), void* pUser);// ch:注册单个事件回调 | en:Register Event CallBackint RegisterEventCallBack(const char* pEventName, void(__stdcall* cbEvent)(MV_EVENT_OUT_INFO * pEventInfo, void* pUser), void* pUser);// ch:强制IP | en:Force IPint ForceIp(unsigned int nIP, unsigned int nSubNetMask, unsigned int nDefaultGateWay);// ch:配置IP方式 | en:IP configuration methodint SetIpConfig(unsigned int nType);// ch:设置网络传输模式 | en:Set Net Transfer Modeint SetNetTransMode(unsigned int nType);// ch:像素格式转换 | en:Pixel format conversionint ConvertPixelType(MV_CC_PIXEL_CONVERT_PARAM* pstCvtParam);// ch:保存图片 | en:save imageint SaveImage(MV_SAVE_IMAGE_PARAM_EX* pstParam);int SaveImageToFile(MV_SAVE_IMG_TO_FILE_PARAM* pstSaveFileParam);private:void*               m_hDevHandle;MV_CC_DEVICE_INFO    m_stDeviceInfo;};#endif//_MV_CAMERA_H_

CMvCamera.cpp

#include "MvCamera.h"CMvCamera::CMvCamera()
{m_hDevHandle = MV_NULL;
}CMvCamera::~CMvCamera()
{if (m_hDevHandle){MV_CC_DestroyHandle(m_hDevHandle);m_hDevHandle    = MV_NULL;}
}// ch:获取SDK版本号 | en:Get SDK Version
int CMvCamera::GetSDKVersion()
{return MV_CC_GetSDKVersion();
}// ch:枚举设备 | en:Enumerate Device
int CMvCamera::EnumDevices(unsigned int nTLayerType, MV_CC_DEVICE_INFO_LIST* pstDevList)
{return MV_CC_EnumDevices(nTLayerType, pstDevList);
}// ch:判断设备是否可达 | en:Is the device accessible
bool CMvCamera::IsDeviceAccessible(MV_CC_DEVICE_INFO* pstDevInfo, unsigned int nAccessMode)
{return MV_CC_IsDeviceAccessible(pstDevInfo, nAccessMode);
}// ch:打开设备 | en:Open Device
int CMvCamera::Open(MV_CC_DEVICE_INFO* pstDeviceInfo)
{if (MV_NULL == pstDeviceInfo){return MV_E_PARAMETER;}if (m_hDevHandle){return MV_E_CALLORDER;}int nRet  = MV_CC_CreateHandle(&m_hDevHandle, pstDeviceInfo);if (MV_OK != nRet){return nRet;}nRet = MV_CC_OpenDevice(m_hDevHandle);if (MV_OK != nRet){MV_CC_DestroyHandle(m_hDevHandle);m_hDevHandle = MV_NULL;}memcpy(&m_stDeviceInfo, pstDeviceInfo, sizeof(MV_CC_DEVICE_INFO));return nRet;
}// ch:关闭设备 | en:Close Device
int CMvCamera::Close()
{if (MV_NULL == m_hDevHandle){return MV_E_HANDLE;}MV_CC_CloseDevice(m_hDevHandle);int nRet = MV_CC_DestroyHandle(m_hDevHandle);m_hDevHandle = MV_NULL;return nRet;
}// ch:判断相机是否处于连接状态 | en:Is The Device Connected
bool CMvCamera::IsDeviceConnected()
{return MV_CC_IsDeviceConnected(m_hDevHandle);
}// ch:注册图像数据回调 | en:Register Image Data CallBack
int CMvCamera::RegisterImageCallBack(void(__stdcall* cbOutput)(unsigned char * pData, MV_FRAME_OUT_INFO_EX* pFrameInfo, void* pUser), void* pUser)
{return MV_CC_RegisterImageCallBackEx(m_hDevHandle, cbOutput, pUser);
}// ch:开启抓图 | en:Start Grabbing
int CMvCamera::StartGrabbing()
{return MV_CC_StartGrabbing(m_hDevHandle);
}// ch:停止抓图 | en:Stop Grabbing
int CMvCamera::StopGrabbing()
{return MV_CC_StopGrabbing(m_hDevHandle);
}// ch:主动获取一帧图像数据 | en:Get one frame initiatively
int CMvCamera::GetImageBuffer(MV_FRAME_OUT* pFrame, int nMsec)
{return MV_CC_GetImageBuffer(m_hDevHandle, pFrame, nMsec);
}// ch:释放图像缓存 | en:Free image buffer
int CMvCamera::FreeImageBuffer(MV_FRAME_OUT* pFrame)
{return MV_CC_FreeImageBuffer(m_hDevHandle, pFrame);
}// ch:设置显示窗口句柄 | en:Set Display Window Handle
int CMvCamera::DisplayOneFrame(MV_DISPLAY_FRAME_INFO* pDisplayInfo)
{return MV_CC_DisplayOneFrame(m_hDevHandle, pDisplayInfo);
}// ch:设置SDK内部图像缓存节点个数 | en:Set the number of the internal image cache nodes in SDK
int CMvCamera::SetImageNodeNum(unsigned int nNum)
{return MV_CC_SetImageNodeNum(m_hDevHandle, nNum);
}// ch:获取设备信息 | en:Get device information
int CMvCamera::GetDeviceInfo(MV_CC_DEVICE_INFO* pstDevInfo)
{if (pstDevInfo){memcpy(pstDevInfo, &m_stDeviceInfo, sizeof(MV_CC_DEVICE_INFO));return MV_OK;}return MV_E_PARAMETER;
}// ch:获取GEV相机的统计信息 | en:Get detect info of GEV camera
int CMvCamera::GetGevAllMatchInfo(MV_MATCH_INFO_NET_DETECT* pMatchInfoNetDetect)
{if (MV_NULL == pMatchInfoNetDetect){return MV_E_PARAMETER;}MV_CC_DEVICE_INFO stDevInfo = {0};GetDeviceInfo(&stDevInfo);if (stDevInfo.nTLayerType != MV_GIGE_DEVICE){return MV_E_SUPPORT;}MV_ALL_MATCH_INFO struMatchInfo = {0};struMatchInfo.nType = MV_MATCH_TYPE_NET_DETECT;struMatchInfo.pInfo = pMatchInfoNetDetect;struMatchInfo.nInfoSize = sizeof(MV_MATCH_INFO_NET_DETECT);memset(struMatchInfo.pInfo, 0, sizeof(MV_MATCH_INFO_NET_DETECT));return MV_CC_GetAllMatchInfo(m_hDevHandle, &struMatchInfo);
}// ch:获取U3V相机的统计信息 | en:Get detect info of U3V camera
int CMvCamera::GetU3VAllMatchInfo(MV_MATCH_INFO_USB_DETECT* pMatchInfoUSBDetect)
{if (MV_NULL == pMatchInfoUSBDetect){return MV_E_PARAMETER;}MV_CC_DEVICE_INFO stDevInfo = {0};GetDeviceInfo(&stDevInfo);if (stDevInfo.nTLayerType != MV_USB_DEVICE){return MV_E_SUPPORT;}MV_ALL_MATCH_INFO struMatchInfo = {0};struMatchInfo.nType = MV_MATCH_TYPE_USB_DETECT;struMatchInfo.pInfo = pMatchInfoUSBDetect;struMatchInfo.nInfoSize = sizeof(MV_MATCH_INFO_USB_DETECT);memset(struMatchInfo.pInfo, 0, sizeof(MV_MATCH_INFO_USB_DETECT));return MV_CC_GetAllMatchInfo(m_hDevHandle, &struMatchInfo);
}// ch:获取和设置Int型参数，如 Width和Height，详细内容参考SDK安装目录下的 MvCameraNode.xlsx 文件
// en:Get Int type parameters, such as Width and Height, for details please refer to MvCameraNode.xlsx file under SDK installation directory
int CMvCamera::GetIntValue(IN const char* strKey, OUT MVCC_INTVALUE_EX *pIntValue)
{return MV_CC_GetIntValueEx(m_hDevHandle, strKey, pIntValue);
}int CMvCamera::SetIntValue(IN const char* strKey, IN int64_t nValue)
{return MV_CC_SetIntValueEx(m_hDevHandle, strKey, nValue);
}// ch:获取和设置Enum型参数，如 PixelFormat，详细内容参考SDK安装目录下的 MvCameraNode.xlsx 文件
// en:Get Enum type parameters, such as PixelFormat, for details please refer to MvCameraNode.xlsx file under SDK installation directory
int CMvCamera::GetEnumValue(IN const char* strKey, OUT MVCC_ENUMVALUE *pEnumValue)
{return MV_CC_GetEnumValue(m_hDevHandle, strKey, pEnumValue);
}int CMvCamera::SetEnumValue(IN const char* strKey, IN unsigned int nValue)
{return MV_CC_SetEnumValue(m_hDevHandle, strKey, nValue);
}int CMvCamera::SetEnumValueByString(IN const char* strKey, IN const char* sValue)
{return MV_CC_SetEnumValueByString(m_hDevHandle, strKey, sValue);
}// ch:获取和设置Float型参数，如 ExposureTime和Gain，详细内容参考SDK安装目录下的 MvCameraNode.xlsx 文件
// en:Get Float type parameters, such as ExposureTime and Gain, for details please refer to MvCameraNode.xlsx file under SDK installation directory
int CMvCamera::GetFloatValue(IN const char* strKey, OUT MVCC_FLOATVALUE *pFloatValue)
{return MV_CC_GetFloatValue(m_hDevHandle, strKey, pFloatValue);
}int CMvCamera::SetFloatValue(IN const char* strKey, IN float fValue)
{return MV_CC_SetFloatValue(m_hDevHandle, strKey, fValue);
}// ch:获取和设置Bool型参数，如 ReverseX，详细内容参考SDK安装目录下的 MvCameraNode.xlsx 文件
// en:Get Bool type parameters, such as ReverseX, for details please refer to MvCameraNode.xlsx file under SDK installation directory
int CMvCamera::GetBoolValue(IN const char* strKey, OUT bool *pbValue)
{return MV_CC_GetBoolValue(m_hDevHandle, strKey, pbValue);
}int CMvCamera::SetBoolValue(IN const char* strKey, IN bool bValue)
{return MV_CC_SetBoolValue(m_hDevHandle, strKey, bValue);
}// ch:获取和设置String型参数，如 DeviceUserID，详细内容参考SDK安装目录下的 MvCameraNode.xlsx 文件UserSetSave
// en:Get String type parameters, such as DeviceUserID, for details please refer to MvCameraNode.xlsx file under SDK installation directory
int CMvCamera::GetStringValue(IN const char* strKey, MVCC_STRINGVALUE *pStringValue)
{return MV_CC_GetStringValue(m_hDevHandle, strKey, pStringValue);
}int CMvCamera::SetStringValue(IN const char* strKey, IN const char* strValue)
{return MV_CC_SetStringValue(m_hDevHandle, strKey, strValue);
}// ch:执行一次Command型命令，如 UserSetSave，详细内容参考SDK安装目录下的 MvCameraNode.xlsx 文件
// en:Execute Command once, such as UserSetSave, for details please refer to MvCameraNode.xlsx file under SDK installation directory
int CMvCamera::CommandExecute(IN const char* strKey)
{return MV_CC_SetCommandValue(m_hDevHandle, strKey);
}// 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)
int CMvCamera::GetOptimalPacketSize(unsigned int* pOptimalPacketSize)
{if (MV_NULL == pOptimalPacketSize){return MV_E_PARAMETER;}int nRet = MV_CC_GetOptimalPacketSize(m_hDevHandle);if (nRet < MV_OK){return nRet;}*pOptimalPacketSize = (unsigned int)nRet;return MV_OK;
}// ch:注册消息异常回调 | en:Register Message Exception CallBack
int CMvCamera::RegisterExceptionCallBack(void(__stdcall* cbException)(unsigned int nMsgType, void* pUser),void* pUser)
{return MV_CC_RegisterExceptionCallBack(m_hDevHandle, cbException, pUser);
}// ch:注册单个事件回调 | en:Register Event CallBack
int CMvCamera::RegisterEventCallBack(const char* pEventName, void(__stdcall* cbEvent)(MV_EVENT_OUT_INFO * pEventInfo, void* pUser), void* pUser)
{return MV_CC_RegisterEventCallBackEx(m_hDevHandle, pEventName, cbEvent, pUser);
}// ch:强制IP | en:Force IP
int CMvCamera::ForceIp(unsigned int nIP, unsigned int nSubNetMask, unsigned int nDefaultGateWay)
{return MV_GIGE_ForceIpEx(m_hDevHandle, nIP, nSubNetMask, nDefaultGateWay);
}// ch:配置IP方式 | en:IP configuration method
int CMvCamera::SetIpConfig(unsigned int nType)
{return MV_GIGE_SetIpConfig(m_hDevHandle, nType);
}// ch:设置网络传输模式 | en:Set Net Transfer Mode
int CMvCamera::SetNetTransMode(unsigned int nType)
{return MV_GIGE_SetNetTransMode(m_hDevHandle, nType);
}// ch:像素格式转换 | en:Pixel format conversion
int CMvCamera::ConvertPixelType(MV_CC_PIXEL_CONVERT_PARAM* pstCvtParam)
{return MV_CC_ConvertPixelType(m_hDevHandle, pstCvtParam);
}// ch:保存图片 | en:save image
int CMvCamera::SaveImage(MV_SAVE_IMAGE_PARAM_EX* pstParam)
{return MV_CC_SaveImageEx2(m_hDevHandle, pstParam);
}int CMvCamera::SaveImageToFile(MV_SAVE_IMG_TO_FILE_PARAM* pstSaveFileParam)
{return MV_CC_SaveImageToFile(m_hDevHandle, pstSaveFileParam);
}

3. 添加SDK,包括上面类CMvCamera程序中缺少的"MvCameraControl.h"

在MVS的安装目录中找到development目录，将include与libraries子目录拷到我们工程文件夹下，重新命名为SDK，如下，

导入外部库，我们这里是64位的MvCameraControl.lib，导入后的工程文件改变如下，

win32: LIBS += -L$$PWD/SDK/Libraries/win64/ -lMvCameraControlINCLUDEPATH += $$PWD/SDK/Includes
DEPENDPATH += $$PWD/SDK/Includeswin32:!win32-g++: PRE_TARGETDEPS += $$PWD/SDK/Libraries/win64/MvCameraControl.lib
else:win32-g++: PRE_TARGETDEPS += $$PWD/SDK/Libraries/win64/libMvCameraControl.a

4. 到这里已经添加了海康的SDK库，试着编译一下我们刚刚添加的类CMvCamera，

报没有头文件的错，

原因很简单，是因为我们CMvCamera类的头文件与源文件名字有差别，现在的头文件应该是cmvcamera.h.

修改后，编译正常。下面还有两个事情要做一下：

一个是添加opencv库，我们的下面的程序的图形处理是基于Opencv的；

另一个是仿照例子程序把界面设计出来并实现它们的功能。

5. 添加Opencv库，

本实验平台opencv安装路径在c盘，所以添加外部库后，工程文件修改如下，

win32:CONFIG(release, debug|release): LIBS += -LC:/opencv/build/x64/vc15/lib/ -lopencv_world453
else:win32:CONFIG(debug, debug|release): LIBS += -LC:/opencv/build/x64/vc15/lib/ -lopencv_world453dINCLUDEPATH += C:/opencv/build/include
DEPENDPATH += C:/opencv/build/include

6. 设计应用程序界面

原先的界面（9个相机）

新设计的界面，考虑相机数目少一些4个，功能不增不减。

具体设计与实现，见后续博文