qt一个线程收多个网络视频数据

可以使用Qt的多线程机制和网络模块来实现一个线程收取多个网络视频数据的功能。以下是一个简单的示例代码：

#include <QCoreApplication>
#include <QThread>
#include <QTcpSocket>
#include <QTimer>

class VideoReceiver : public QObject
{
    Q_OBJECT
public:
    explicit VideoReceiver(QObject *parent = nullptr)
        : QObject(parent)
    {
        // 创建多个TcpSocket连接
        for (int i = 0; i < 5; ++i) {
            QTcpSocket *socket = new QTcpSocket(this);
            sockets.append(socket);
            connect(socket, &QTcpSocket::readyRead, this, &VideoReceiver::onReadyRead);
            socket->connectToHost("192.168.0.100", 8080); // 连接服务器
        }

        // 启动定时器，定时发送心跳包
        QTimer *timer = new QTimer(this);
        connect(timer, &QTimer::timeout, this, &VideoReceiver::sendHeartbeat);
        timer->start(5000);
    }

signals:
    void videoReceived(QByteArray data);

private slots:
    void onReadyRead()
    {
        QTcpSocket *socket = static_cast<QTcpSocket*>(sender());
        QByteArray data = socket->readAll();
        emit videoReceived(data);
    }

    void sendHeartbeat()
    {
        // 发送心跳包
        foreach (QTcpSocket *socket, sockets) {
            socket->write("heartbeat");
        }
    }

private:
    QList<QTcpSocket*> sockets;
};

int main(int argc, char *argv[])
{
    QCoreApplication a(argc, argv);

    VideoReceiver receiver;
    QThread thread;
    receiver.moveToThread(&thread);
    thread.start();

    QObject::connect(&receiver, &VideoReceiver::videoReceived, [](QByteArray data){
        // 处理接收到的视频数据
    });

    return a.exec();
}

上述代码中，`VideoReceiver` 类用于接收多个视频数据，该类内部创建了多个 `QTcpSocket` 连接到服务器，并在收到数据时发出 `videoReceived` 信号通知外部。在主函数中，将 `VideoReceiver` 移动到一个单独的线程中运行，以避免阻塞主线程。在外部通过连接 `videoReceived` 信号来处理接收到的视频数据。同时，定时器定期发送心跳包以保持连接。