cpp
#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 name
printf("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 device
MV_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 handle
nRet = 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 device
nRet = 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 off
nRet = 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 image
nRet = 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 image
nRet = MV_CC_StopGrabbing(handle);
if (MV_OK != nRet)
{
printf("Stop Grabbing fail! nRet [0x%x]\n", nRet);
break;
}
// ch:关闭设备 | Close device
nRet = MV_CC_CloseDevice(handle);
if (MV_OK != nRet)
{
printf("ClosDevice fail! nRet [0x%x]\n", nRet);
break;
}
// ch:销毁句柄 | Destroy handle
nRet = 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;
}
本代码将会把工业相机拍摄图像显示在DOS窗体上
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