ArtNet 3的ArtPollReply从256空间开始开启32个空间的C程序

以下是使用C语言编写的Art-Net 3的ArtPollReply从256空间开始开启32个空间的示例程序：

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <arpa/inet.h>

typedef struct {
    char id[8];
    unsigned short opcode;
    unsigned int ip;
    unsigned short port;
    unsigned short versInfo;
    unsigned char netSwitch;
    unsigned char subSwitch;
    unsigned short oem;
    unsigned char ubeaVersion;
    unsigned char status1;
    unsigned short estaMan;
    char shortName[18];
    char longName[64];
    char nodeReport[64];
    unsigned short numPorts;
    unsigned char portTypes[32]; // 每个端口的类型，最多支持32个端口
    unsigned char goodInput[32]; // 每个输入端口的状态，最多支持32个端口
    unsigned char goodOutput[32]; // 每个输出端口的状态，最多支持32个端口
    unsigned char swIn[32]; // 输入端口的软件设置，最多支持32个端口
    unsigned char swOut[32]; // 输出端口的软件设置，最多支持32个端口
    unsigned char swVideo;
    unsigned char swMacro;
    unsigned char swRemote;
    unsigned int spare;
} ArtPollReplyPacket;

int main() {
    ArtPollReplyPacket reply;

    strcpy(reply.id, "Art-Net");
    reply.opcode = htons(0x2100);
    reply.ip = inet_addr("192.168.1.100");
    reply.port = htons(0x1936);
    reply.versInfo = htons(0x010e);
    reply.netSwitch = 0x00;
    reply.subSwitch = 0x00;
    reply.oem = htons(0x1234);
    reply.ubeaVersion = 0x01;
    reply.status1 = 0x00;
    reply.estaMan = htons(0x5678);
    strcpy(reply.shortName, "Device");
    strcpy(reply.longName, "Art-Net Device");
    strcpy(reply.nodeReport, "Ready");
    reply.numPorts = htons(32);

    memset(reply.portTypes, 0x80, sizeof(reply.portTypes));
    memset(reply.goodInput, 0x01, sizeof(reply.goodInput));
    memset(reply.goodOutput, 0x01, sizeof(reply.goodOutput));
    memset(reply.swIn, 0x00, sizeof(reply.swIn));
    memset(reply.swOut, 0x00, sizeof(reply.swOut));

    // 设置从256宇宙开始的32个宇宙
    for (int i = 0; i < 32; i++) {
        int universe = 256 + i;
        reply.portTypes[i] = universe >> 8; // 高字节表示扩展的宇宙数量
        reply.portTypes[i + 1] = universe & 0xFF; // 低字节表示宇宙编号
        reply.goodInput[i] = 0x01; // 输入状态正常
        reply.goodOutput[i] = 0x01; // 输出状态正常
        reply.swIn[i] = 0x00; // 输入软件设置
        reply.swOut[i] = 0x00; // 输出软件设置
    }

    reply.swVideo = 0x00;
    reply.swMacro = 0x00;
    reply.swRemote = 0x00;
    reply.spare = htonl(0x00000000);

    int sockfd;
    if ((sockfd = socket(AF_INET, SOCK_DGRAM, 0)) < 0) {
        perror("socket creation failed");
        exit(EXIT_FAILURE);
    }

    struct sockaddr_in destAddr;
    memset(&destAddr, 0, sizeof(destAddr));
    destAddr.sin_family = AF_INET;
    destAddr.sin_port = htons(0x1936);
    destAddr.sin_addr.s_addr = inet_addr("255.255.255.255");

    if (sendto(sockfd, &reply, sizeof(reply), 0, (struct sockaddr*)&destAddr, sizeof(destAddr)) < 0) {
        perror("sendto failed");
        exit(EXIT_FAILURE);
    }

    close(sockfd);

    return 0;
}

在这个示例程序中，我们修改了设置宇宙的部分，从256宇宙开始设置32个宇宙。我们使用了一个循环来逐个设置每个宇宙的高字节和低字节，表示扩展的宇宙数量和宇宙编号。其他部分与之前的示例类似。

请注意，不是所有的Art-Net设备都支持或实现了扩展宇宙功能，因此在使用时需要确认设备的兼容性和功能支持。确保遵循Art-Net协议规范以确保与其他设备的兼容性。