开发一个支持AMT的集会系统 - IT评测·应用市场-qidao123.com技术社区

#include <iostream>
#include <cstring>
#include <unistd.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <sys/socket.h>
#include <netinet/ip.h>
#include <netinet/in.h>
#include <FFmpeg/avcodec.h>
#include <FFmpeg/avformat.h>
#define MULTICAST_GROUP "ff02::1" // IPv6 Multicast address
#define TUNNEL_SERVER "192.168.1.1" // AMT Server IPv4 address
#define TUNNEL_PORT 12345 // AMT server port
#define LOCAL_PORT 9000 // Local UDP port for capturing audio/video
class AMTClient {
public:
AMTClient() {
// Create IPv6 UDP socket
if ((sockfd = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) {
perror("Socket creation failed");
exit(EXIT_FAILURE);
}
// Bind to local address
struct sockaddr_in6 local_addr{};
local_addr.sin6_family = AF_INET6;
local_addr.sin6_port = htons(LOCAL_PORT);
local_addr.sin6_addr = in6addr_any;
if (bind(sockfd, (struct sockaddr*)&local_addr, sizeof(local_addr)) < 0) {
perror("Binding failed");
close(sockfd);
exit(EXIT_FAILURE);
}
// Join multicast group
struct ipv6_mreq mreq{};
inet_pton(AF_INET6, MULTICAST_GROUP, &mreq.ipv6mr_multiaddr);
mreq.ipv6mr_interface = 0;
if (setsockopt(sockfd, IPPROTO_IPV6, IPV6_ADD_MEMBERSHIP, &mreq, sizeof(mreq)) < 0) {
perror("Adding multicast membership failed");
close(sockfd);
exit(EXIT_FAILURE);
}
}
~AMTClient() {
close(sockfd);
}
void captureAndSend() {
// Initialize FFmpeg (audio/video capture and encoding)
av_register_all();
AVFormatContext *format_ctx = nullptr;
if (avformat_open_input(&format_ctx, "video=WebCam", nullptr, nullptr) != 0) {
std::cerr << "Failed to open video input\n";
return;
}
AVCodecContext *codec_ctx = format_ctx->streams[0]->codec;
AVCodec *codec = avcodec_find_encoder(codec_ctx->codec_id);
if (codec == nullptr || avcodec_open2(codec_ctx, codec, nullptr) < 0) {
std::cerr << "Failed to open codec\n";
return;
}
// Capture and encode video/audio data
uint8_t *encoded_data = new uint8_t[1024];
int encoded_size = 0;
// Assuming video frame capture
AVPacket packet;
while (true) {
if (av_read_frame(format_ctx, &packet) >= 0) {
// Encode the video frame
encoded_size = avcodec_encode_video2(codec_ctx, &packet, nullptr);
if (encoded_size > 0) {
sendMulticastData(encoded_data, encoded_size);
}
av_packet_unref(&packet);
}
}
delete[] encoded_data;
avformat_close_input(&format_ctx);
}
private:
int sockfd;
void sendMulticastData(uint8_t *data, int size) {
struct sockaddr_in server_addr{};
server_addr.sin_family = AF_INET;
server_addr.sin_port = htons(TUNNEL_PORT);
inet_pton(AF_INET, TUNNEL_SERVER, &server_addr.sin_addr);
// Send data to server through AMT tunnel
if (sendto(sockfd, data, size, 0, (struct sockaddr*)&server_addr, sizeof(server_addr)) < 0) {
perror("Send failed");
}
}
};
int main() {
AMTClient client;
client.captureAndSend();
return 0;
}

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[/code] [code]#include <iostream>
#include <cstring>
#include <unistd.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <sys/socket.h>
#define TUNNEL_PORT 12345
#define MULTICAST_GROUP "ff02::1"
class AMTServer {
public:
AMTServer() {
if ((sockfd = socket(AF_INET, SOCK_DGRAM, 0)) < 0) {
perror("Socket creation failed");
exit(EXIT_FAILURE);
}
struct sockaddr_in server_addr{};
server_addr.sin_family = AF_INET;
server_addr.sin_port = htons(TUNNEL_PORT);
server_addr.sin_addr.s_addr = INADDR_ANY;
if (bind(sockfd, (struct sockaddr*)&server_addr, sizeof(server_addr)) < 0) {
perror("Binding failed");
close(sockfd);
exit(EXIT_FAILURE);
}
}
~AMTServer() {
close(sockfd);
}
void receiveAndForward() {
char buffer[1024];
struct sockaddr_in client_addr{};
socklen_t addr_len = sizeof(client_addr);
while (true) {
ssize_t bytes_received = recvfrom(sockfd, buffer, sizeof(buffer), 0, (struct sockaddr*)&client_addr, &addr_len);
if (bytes_received < 0) {
perror("Receive failed");
continue;
}
buffer[bytes_received] = '\0';
std::cout << "Received packet: " << buffer << std::endl;
// Forward data to multicast group
forwardToMulticastGroup(buffer);
}
}
void forwardToMulticastGroup(const char *data) {
std::cout << "Forwarding data to multicast group: " << MULTICAST_GROUP << std::endl;
// Here, data would be forwarded to the multicast group
}
private:
int sockfd;
};
int main() {
AMTServer server;
server.receiveAndForward();
return 0;
}

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