Question

我正在运行一个c＃程序，我需要在另一个进程上在vlc上播放视频并用命令提供它。我不是在找axVLCPlugin21

之类的东西

我只需要基本的播放/暂停/音量命令。实现这一目标的最简单方法是什么？

我试过这个，但是stdin写错了 Process p = Process.Start(@"C:\...\a.mp4"); p.StandardInput.Write("comand");

Answer 1

我还发现控制台Std In重定向不适用于VLC进程。我可以让VLC控制台界面工作的唯一方法是使用SendKeys，这不是一个非常好的方法。

VLC也支持相同接口的套接字连接，这看起来效果很好。以下是如何连接和发送/接收命令和响应的示例。

static void Main()
{
    IPEndPoint socketAddress = new IPEndPoint(IPAddress.Parse("127.0.0.1"), 54165);
    var vlcServerProcess = Process.Start(@"C:\Program Files (x86)\VideoLAN\VLC\vlc.exe", "-I rc --rc-host " + socketAddress.ToString());

    try
    {
        Socket vlcRcSocket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
        vlcRcSocket.Connect(socketAddress);
        // start another thread to look for responses and display them
        Task listener = Task.Factory.StartNew(() => Receive(vlcRcSocket));

        Console.WriteLine("Connected. Enter VLC commands.");

        while(true)
        {
            string command = Console.ReadLine();
            if (command.Equals("quit")) break;
            Send(vlcRcSocket, command);
        }

        Send(vlcRcSocket, "quit"); // close vlc rc interface and disconnect
        vlcRcSocket.Disconnect(false);
    }
    finally
    {
        vlcServerProcess.Kill();
    }
}

private static void Send(Socket socket, string command)
{
    // send command to vlc socket, note \n is important
    byte[] commandData = UTF8Encoding.UTF8.GetBytes(String.Format("{0}\n", command));
    int sent = socket.Send(commandData);
}

private static void Receive(Socket socket)
{
    do
    {
        if (socket.Connected == false)             
            break;
        // check if there is any data
        bool haveData = socket.Poll(1000000, SelectMode.SelectRead);

        if (haveData == false) continue;
        byte[] buffer = new byte[socket.ReceiveBufferSize];
        using (MemoryStream mem = new MemoryStream())
        {
            while (haveData)
            {
                int received = socket.Receive(buffer);
                mem.Write(buffer, 0, received);
                haveData = socket.Poll(1000000, SelectMode.SelectRead);
            }

            Console.WriteLine(Encoding.UTF8.GetString(mem.ToArray()));
        }    

    } while (true);         
}

Answer 2

您必须重定向正在创建的流程的标准输入。有关详细信息，请参阅this页面上的示例。

在c＃中控制vlc进程

2 个答案: