ucma - UCMA 3.0 - 记录来电

Question

我是 UCMA 的新手，我正在通过示例学习。我正在尝试使用以下场景构建 2 个 Lync 客户端 A 和 B，

A呼叫B
B 答案
A 播放音频
B 使用 Recorder 记录它。

我一直在尝试在 B 处记录通话。对于 B，它是来电。我需要将音频视频流附加到录音机，但我不知道该怎么做。我将不胜感激。对未格式化的代码表示歉意，我不知道如何正确格式化它，我试过了。

谢谢。克里斯

客户 B 代码：

接听来电

记录来电中收到的媒体。***这是我遇到麻烦的部分

使用系统；使用 System.Threading；使用 Microsoft.Rtc.Collaboration；使用 Microsoft.Rtc.Collaboration.AudioVideo；使用 Microsoft.Rtc.Signaling；使用 Microsoft.Rtc.Collaboration.Lync；

命名空间 Microsoft.Rtc.Collaboration.LyncUAS { public class LyncUAS { #region Locals private LyncUASConfigurationHelper _helper; 私有用户端点_userEndpoint；私人 AudioVideoCall _audioVideoCall; 私有 AudioVideoFlow _audioVideoFlow; 私人对话_incomingConversation;

    //Wait handles are only present to keep things synchronous and easy to read.
    private AutoResetEvent _autoResetEvent = new AutoResetEvent(false);
    private EventHandler<AudioVideoFlowConfigurationRequestedEventArgs> _audioVideoFlowConfigurationRequestedEventHandler;
    private EventHandler<MediaFlowStateChangedEventArgs> _audioVideoFlowStateChangedEventHandler;
    private AutoResetEvent _waitForAudioVideoCallEstablishCompleted = new AutoResetEvent(false);
    private AutoResetEvent _waitForAudioVideoFlowStateChangedToActiveCompleted = new AutoResetEvent(false);
    private AutoResetEvent _waitForPrepareSourceCompleted = new AutoResetEvent(false);

    #endregion

    #region Methods
    /// <summary>
    /// Instantiate and run the DeclineIncomingCall quickstart.
    /// </summary>
    /// <param name="args">unused</param>
    public static void Main(string[] args)
    {
        LyncUAS lyncUAS = new LyncUAS();
        lyncUAS.Run();
    }

    private void Run()
    {
       string filename = "received.wma";

        _helper = new LyncUASConfigurationHelper();

        // Create a user endpoint, using the network credential object 
        // defined above.
        _userEndpoint = _helper.CreateEstablishedUserEndpoint("Lync UAS" /*endpointFriendlyName*/);
        _userEndpoint.RegisterForIncomingCall<AudioVideoCall>(On_AudioVideoCall_Received);
        Console.WriteLine("Waiting for incoming call...");
        _autoResetEvent.WaitOne();
        Console.WriteLine("came after call is connected");
        //start recording for audio.

        Recorder recorder = new Recorder();            

        recorder.StateChanged += new EventHandler<RecorderStateChangedEventArgs>(recorder_StateChanged);
        recorder.VoiceActivityChanged += new EventHandler<VoiceActivityChangedEventArgs>(recorder_VoiceActivityChanged);

//**********这是问题，当前_audioVideoFlow为空，它没有附加到流 //所以这会失败，如何附加_audioVideoFlow到来电？帮助！！！

       // recorder.AttachFlow(_audioVideoFlow);  ------------> HELP!


        WmaFileSink sink = new WmaFileSink(filename);
        recorder.SetSink(sink);
        recorder.Start();
        Console.WriteLine("Started Recording ...");
        _autoResetEvent.WaitOne();
        recorder.Stop();
        Console.WriteLine("Stopped Recording ...");
        recorder.DetachFlow();
        Console.WriteLine("Exiting");
        Thread.Sleep(2000); 
    }


    private void audioVideoFlow_StateChanged(object sender, MediaFlowStateChangedEventArgs e)
    {
        Console.WriteLine("Flow state changed from " + e.PreviousState + " to " + e.State);

        //When flow is active, media operations can begin
        if (e.State == MediaFlowState.Active)
        {
            // Flow-related media operations normally begin here.
            _waitForAudioVideoFlowStateChangedToActiveCompleted.Set();
        }

        // call sample event handler
        if (_audioVideoFlowStateChangedEventHandler != null)
        {
            _audioVideoFlowStateChangedEventHandler(sender, e);
        }
    }


    void recorder_VoiceActivityChanged(object sender, VoiceActivityChangedEventArgs e)
    {
        Console.WriteLine("Recorder detected " + (e.IsVoice ? "voice" : "silence") + " at " + e.TimeStamp);
    }

    void recorder_StateChanged(object sender, RecorderStateChangedEventArgs e)
    {
        Console.WriteLine("Recorder state changed from " + e.PreviousState + " to " + e.State);
    }

    void On_AudioVideoCall_Received(object sender, CallReceivedEventArgs<AudioVideoCall> e)
    {
        //Type checking was done by the platform; no risk of this being any 
        // type other than the type expected.
        _audioVideoCall = e.Call;

        // Call: StateChanged: Only hooked up for logging, to show the call 
        // state transitions.
        _audioVideoCall.StateChanged += new
            EventHandler<CallStateChangedEventArgs>(_audioVideoCall_StateChanged);
        _incomingConversation = new Conversation(_userEndpoint);

        Console.WriteLine("Call Received! From: " + e.RemoteParticipant.Uri + " Toast is: " +e.ToastMessage.Message);
        _audioVideoCall.BeginAccept(
             ar =>
             {
                 try { 
                     _audioVideoCall.EndAccept(ar);
                     Console.WriteLine("Call must be connected at this point. "+_audioVideoCall.State);

                     _autoResetEvent.Set();
                      } catch (RealTimeException ex) { Console.WriteLine(ex); }
             }, null);

    }

    //Just to record the state transitions in the console.
    void _audioVideoCall_StateChanged(object sender, CallStateChangedEventArgs e)
    {
        Console.WriteLine("Call has changed state. The previous call state was: " + e.PreviousState +
            " and the current state is: " + e.State);
        if (e.State == CallState.Terminated)
        {               
            Console.WriteLine("Shutting down");
            _autoResetEvent.Set();
            _helper.ShutdownPlatform();
        }
    }
    #endregion
}

}

score 0 · Accepted Answer

我想我已经弄清楚了这里不完全正确的地方。

你的代码

    // Create a user endpoint, using the network credential object 
    // defined above.
    _userEndpoint = _helper.CreateEstablishedUserEndpoint("Lync UAS" /*endpointFriendlyName*/);
    _userEndpoint.RegisterForIncomingCall<AudioVideoCall>(On_AudioVideoCall_Received);
    Console.WriteLine("Waiting for incoming call...");
    _autoResetEvent.WaitOne();
    Console.WriteLine("came after call is connected");
    //start recording for audio.

    Recorder recorder = new Recorder();            

    recorder.StateChanged += new EventHandler<RecorderStateChangedEventArgs>(recorder_StateChanged);
    recorder.VoiceActivityChanged += new EventHandler<VoiceActivityChangedEventArgs>(recorder_VoiceActivityChanged);         

     //**********This is the issue, currently _audioVideoFlow is null, it is not attached to the flow //So this will fail, how to attach _audioVideoFlow to an incoming call ?? HELP !!!
     // recorder.AttachFlow(_audioVideoFlow);  ------------> HELP!

到目前为止看起来不错。我假设你在你的CreateEstablishedUserEndpoint方法中建立等等，但我没有看到你从哪里获得 _audioVideoFlow 的价值。

我猜你可能会在其他地方做，但如果这实际上是你遇到问题的地方，那就是：

获得 AVFlow 的最简单模式

    public static void RegisterForIncomingCall(LocalEndpoint localEndpoint)
    {
        localEndpoint.RegisterForIncomingCall
                          <AudioVideoCall>(IncomingCallDelegate);
    }

    private static void IncomingCallDelegate(object sender, CallReceivedEventArgs<AudioVideoCall> e)
    {
        e.Call.AudioVideoFlowConfigurationRequested += IncomingCallOnAudioVideoFlowConfigurationRequested;
    }

    private static void IncomingCallOnAudioVideoFlowConfigurationRequested(object sender, AudioVideoFlowConfigurationRequestedEventArgs e)
    {
        AudioVideoFlow audioVideoFlow = e.Flow; // <--- There's your flow, gentleman.
    }

现在，无需注册您的来电，只需调用RegisterForIncomingCall(_userEndpoint);.

您的 AVFlow 将挂在上面的 e.Flow 上，然后您可以将其传递到您的记录器中：recorder.AttachFlow(e.Flow)或者只是将流分配给您班级中的一个字段，autoResetEvent.WaitOne();然后在您现在设置的位置进行设置。

显然，这是一个非常幼稚的实现。在这几行代码中可能会出错（立即想到异常处理/静态事件处理程序内存泄漏）；不要忘记连接与对话/呼叫和端点上的状态更改相关的事件，以及任何与恢复相关的项目。

ucma - UCMA 3.0 - 记录来电

客户 B 代码：

1 回答 1

你的代码

获得 AVFlow 的最简单模式

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