通过Gige协议接收Gige相机图像数据代码

以下是通过GigE协议接收GigE相机图像数据的示例代码，使用了GigE Vision SDK：

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <GevApi.h>
#include <SapX11Util.h>
#include <X11/Xlib.h>
#include <X11/Xutil.h>

#define MAX_NETIF					8
#define MAX_CAMERAS_PER_NETIF		32
#define MAX_CAMERAS 				(MAX_NETIF * MAX_CAMERAS_PER_NETIF)

#define NUM_BUF					4
#define TIMEOUT					1000

int main(int argc, char* argv[])
{
    // Initialize the GigE Vision API
    if (GevApiInitialize() != GEVLIB_OK)
    {
        printf("Error: GevApiInitialize() failed!\n");
        exit(EXIT_FAILURE);
    }

    // Get all available network interfaces
    GEV_DEVICE_INTERFACE pNetIF[MAX_NETIF];
    uint32_t numInterfaces = 0;
    if (GevGetInterfaces(pNetIF, MAX_NETIF, &numInterfaces) != GEVLIB_OK)
    {
        printf("Error: GevGetInterfaces() failed!\n");
        exit(EXIT_FAILURE);
    }

    // Get all available cameras on the network
    GEV_CAMERA pCamera[MAX_CAMERAS];
    uint32_t numCameras = 0;
    for (uint32_t i = 0; i < numInterfaces; i++)
    {
        if (GevGetCameraList(pNetIF[i].szInterfaceName, GEV_PROTOCOL_FORCEIP, pCamera + numCameras, MAX_CAMERAS_PER_NETIF, &numCameras) != GEVLIB_OK)
        {
            printf("Error: GevGetCameraList() failed on interface %s!\n", pNetIF[i].szInterfaceName);
            exit(EXIT_FAILURE);
        }
    }

    // Open a connection to the first camera found
    GEV_CAMERA_HANDLE hCamera = NULL;
    if (numCameras > 0)
    {
        if (GevOpenCamera(&pCamera[0], GEV_EXCLUSIVE_MODE, &hCamera) != GEVLIB_OK)
        {
            printf("Error: GevOpenCamera() failed!\n");
            exit(EXIT_FAILURE);
        }
    }
    else
    {
        printf("Error: no camera found on the network!\n");
        exit(EXIT_FAILURE);
    }

    // Start the acquisition engine
    if (GevStartImageTransfer(hCamera, NUM_BUF) != GEVLIB_OK)
    {
        printf("Error: GevStartImageTransfer() failed!\n");
        exit(EXIT_FAILURE);
    }

    // Allocate buffers for incoming images
    uint32_t payloadSize = 0;
    if (GevGetPayloadSize(hCamera, &payloadSize) != GEVLIB_OK)
    {
        printf("Error: GevGetPayloadSize() failed!\n");
        exit(EXIT_FAILURE);
    }

    void* pBuffer[NUM_BUF];
    for (uint32_t i = 0; i < NUM_BUF; i++)
    {
        pBuffer[i] = malloc(payloadSize);
        if (pBuffer[i] == NULL)
        {
            printf("Error: failed to allocate buffer!\n");
            exit(EXIT_FAILURE);
        }

        if (GevRegisterImageBuffer(hCamera, pBuffer[i], payloadSize, i) != GEVLIB_OK)
        {
            printf("Error: GevRegisterImageBuffer() failed!\n");
            exit(EXIT_FAILURE);
        }
    }

    // Create a window to display the image
    Display* pDisplay = XOpenDisplay(NULL);
    if (pDisplay == NULL)
    {
        printf("Error: XOpenDisplay() failed!\n");
        exit(EXIT_FAILURE);
    }

    Window window = XCreateSimpleWindow(pDisplay, DefaultRootWindow(pDisplay), 0, 0, 640, 480, 0, 0, 0);
    XSelectInput(pDisplay, window, ExposureMask | KeyPressMask);
    XMapWindow(pDisplay, window);

    while (true)
    {
        // Wait for an image to be received
        GEV_BUFFER_OBJECT pBufferObj = { 0 };
        if (GevWaitForNextImage(hCamera, &pBufferObj, TIMEOUT) == GEVLIB_OK)
        {
            // Get the image data and display it
            char* pData = (char*)pBuffer[pBufferObj.context];
            int width = pBufferObj.w;
            int height = pBufferObj.h;
            XImage* pImage = XCreateImage(pDisplay, DefaultVisual(pDisplay, 0), DefaultDepth(pDisplay, 0), ZPixmap, 0, pData, width, height, 32, 0);

            XEvent event;
            while (XPending(pDisplay))
            {
                XNextEvent(pDisplay, &event);
                if (event.type == Expose)
                {
                    XPutImage(pDisplay, window, DefaultGC(pDisplay, 0), pImage, 0, 0, 0, 0, width, height);
                }
            }
        }
    }

    // Cleanup
    for (uint32_t i = 0; i < NUM_BUF; i++)
    {
        GevFreeImageBuffer(hCamera, pBuffer[i]);
        free(pBuffer[i]);
    }

    XCloseDisplay(pDisplay);

    GevStopImageTransfer(hCamera);
    GevCloseCamera(&hCamera);
    GevApiUninitialize();

    return EXIT_SUCCESS;
}

注意：这只是一个示例代码，需要根据具体的相机型号和网络环境进行适当的修改。