ConnectSpecCamera.cpp

Connect a camera via IP address.

The sample code below shows how to connect to cameras via its IP address and the related NIC's IP address. The input format is xx.xx.xx.xx

#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <stdlib.h>
#include <pthread.h>
#include "MvCameraControl.h"

bool g_bExit = false;


// Wait for user to press "enter" key to stop acquisition or end the sample program
void PressEnterToExit(void)
{
    int c;
    while ( (c = getchar()) != '\n' && c != EOF );
    fprintf( stderr, "\nPress enter to exit.\n");
    while( getchar() != '\n');
    g_bExit = true;
    sleep(1);
}

static void* WorkThread(void* pUser)
{
    int nRet = MV_OK;

    MV_FRAME_OUT stImageInfo = {0};
    memset(&stImageInfo, 0, sizeof(MV_FRAME_OUT));

    while(1)
    {
        if(g_bExit)
        {
            break;
        }

        nRet = MV_CC_GetImageBuffer(pUser, &stImageInfo, 1000);
        if (nRet == MV_OK)
        {
            printf("Get One Frame: Width[%d], Height[%d], nFrameNum[%d]\n", 
                stImageInfo.stFrameInfo.nExtendWidth, stImageInfo.stFrameInfo.nExtendHeight, stImageInfo.stFrameInfo.nFrameNum);

            MV_CC_FreeImageBuffer(pUser, &stImageInfo);
        }
        else
        {
            printf("No data[0x%x]\n", nRet);
            break;        
        }
    }

    return 0;
}

int main()
{
    int nRet = MV_OK;
    void* handle = NULL;
    MV_CC_DEVICE_INFO stDevInfo = {0};
    MV_GIGE_DEVICE_INFO stGigEDev = {0};

    // The camera IP that needs to be connected (based on actual demand)
    printf("Please input Current Camera Ip : ");
    char nCurrentIp[128];
    scanf("%s", (char*)&nCurrentIp);
    // The PC IP that needs to be connected (based on actual demand)
    printf("Please input Net Export Ip : ");
    char nNetExport[128];
    scanf("%s", (char*)&nNetExport);
    unsigned int nIp1, nIp2, nIp3, nIp4, nIp;

    sscanf(nCurrentIp, "%d.%d.%d.%d", &nIp1, &nIp2, &nIp3, &nIp4);
    nIp = (nIp1 << 24) | (nIp2 << 16) | (nIp3 << 8) | nIp4;
    stGigEDev.nCurrentIp = nIp;

    sscanf(nNetExport, "%d.%d.%d.%d", &nIp1, &nIp2, &nIp3, &nIp4);
    nIp = (nIp1 << 24) | (nIp2 << 16) | (nIp3 << 8) | nIp4;
    stGigEDev.nNetExport = nIp;

    stDevInfo.nTLayerType = MV_GIGE_DEVICE;// Only support GigE cameras
    stDevInfo.SpecialInfo.stGigEInfo = stGigEDev;

    do 
    {
        // Initialize the SDK
        nRet = MV_CC_Initialize();
        if (MV_OK != nRet)
        {
            printf("Initialize SDK fail! nRet [0x%x]\n", nRet);
            break;
        }

        // Select device, and create handle
        nRet = MV_CC_CreateHandle(&handle, &stDevInfo);
        if (MV_OK != nRet)
        {
            printf("Create Handle fail! nRet[0x%x]\n", nRet);
            break;
        }

        // Turn on the device
        nRet = MV_CC_OpenDevice(handle);
        if (MV_OK != nRet)
        {
            printf("Open Device fail! nRet [0x%x]\n", nRet);
            break;
        }

        // Get optimal packet size, and set it for GigE cameras
        int nPacketSize = MV_CC_GetOptimalPacketSize(handle);
        if (nPacketSize > 0)
        {
            nRet = MV_CC_SetIntValueEx(handle,"GevSCPSPacketSize",nPacketSize);
            if(nRet != MV_OK)
            {
                printf("Warning: Set Packet Size fail nRet [0x%x]!\n", nRet);
            }
        }
        else
        {
            printf("Warning: Get Packet Size fail nRet [0x%x]!\n", nPacketSize);
        }

        
        // Set trigger mode to off
        nRet = MV_CC_SetEnumValue(handle, "TriggerMode", MV_TRIGGER_MODE_OFF);
        if (MV_OK != nRet)
        {
            printf("Set Trigger Mode fail! nRet [0x%x]\n", nRet);
            break;
        }

        // Start grabbing image
        nRet = MV_CC_StartGrabbing(handle);
        if (MV_OK != nRet)
        {
            printf("Start Grabbing fail! nRet [0x%x]\n", nRet);
            break;
        }

        pthread_t nThreadID;
        nRet = pthread_create(&nThreadID, NULL ,WorkThread , handle);
        if (nRet != 0)
        {
            printf("thread create failed.ret = %d\n",nRet);
            break;
        }

        PressEnterToExit();  

        // End grabbing image
        nRet = MV_CC_StopGrabbing(handle);
        if (MV_OK != nRet)
        {
            printf("Stop Grabbing fail! nRet [0x%x]\n", nRet);
            break;
        }

        // Turn off the device
        nRet = MV_CC_CloseDevice(handle);
        if (MV_OK != nRet)
        {
            printf("Close Device fail! nRet [0x%x]\n", nRet);
            break;
        }

        // Destroy handle
        nRet = MV_CC_DestroyHandle(handle);
        if (MV_OK != nRet)
        {
            printf("Destroy Handle fail! nRet [0x%x]\n", nRet);
            break;
        }
        handle = NULL;
    } while (0);
  
    if (handle != NULL)
    {
        MV_CC_DestroyHandle(handle);
        handle = NULL;
    }
    

    // Deinitialize the SDK
    MV_CC_Finalize();

    printf("exit.\n");

    return 0;
}