C# Naaudio BufferedWaveProvider 缓冲区满异常

Posted 2023-02-16

【中文标题】C# Naaudio BufferedWaveProvider 缓冲区满异常

【英文标题】：C# Naudio BufferedWaveProvider Buffer Full Exception

【发布时间】：2016-06-23 16:54:34

【问题描述】：

当我使用 websocket 连接从 android 发送实时音频流时，我在 BufferedWaveProvider 上遇到缓冲区满异常。 从 Android 发送的音频格式：44100，Sterio，16bit 我也尝试过增加 BufferedWaveProvider 的缓冲区长度，但仍然不行，唯一改变的是程序运行时间更长，我还尝试使用 WaveFileWriter 将音频录制到文件中，该文件在 10 秒音频流中约为 80mb并且里面没有音频。

class Program



    static WaveOut waveOut;
    static BufferedWaveProvider bufferedWaveProvider = null;
    private static SpeechSynthesizer ss;
    private static SpeechRecognitionEngine sre;
    private static int temperature = 75;
    private static WebSocketServer appServer = new WebSocketServer();
    private static int total = 0;
    private static WaveFileWriter writer = new WaveFileWriter("recording.wav", new WaveFormat(44100, 16, 2));
    private static MemoryStream memStream = new MemoryStream();

    static void Main(string[] args)
    

        Console.WriteLine("Press any key to start the WebSocketServer!");
        Console.ReadKey();
        Console.WriteLine();
        waveOut = new WaveOut();            
        bufferedWaveProvider = new BufferedWaveProvider(new WaveFormat());           
        waveOut.Init(bufferedWaveProvider);
        waveOut.Play();    
        appServer.NewDataReceived += new SessionHandler<WebSocketSession, byte[]>(appServer_NewDataReceived);
        appServer.NewSessionConnected += AppServer_NewSessionConnected;           
        appServer.SessionClosed += new SessionHandler<WebSocketSession, CloseReason>(appServer_SessionClosed);    

        //Setup the appServer
        if (!appServer.Setup(80)) //Setup with listening port
        
            Console.WriteLine("Failed to setup!");
            Console.ReadKey();
            return;
        

        //Try to start the appServer
        if (!appServer.Start())
        
            Console.WriteLine("Failed to start!");
            Console.ReadKey();
            return;
        

        Console.WriteLine("The server started successfully, press key 'q' to stop it!");

        while (Console.ReadKey().KeyChar != 'q')
        
            Console.WriteLine();
            continue;
        

        //Stop the appServer
        appServer.Stop();
        Console.WriteLine();
        Console.WriteLine("The server was stopped!");
        Console.ReadKey();
    

    static void appServer_NewDataReceived(WebSocketSession session, byte[] value)
    
        total = total + value.Length;            
        Console.WriteLine("Receiving!! " + total);
        bufferedWaveProvider.AddSamples(value, 0, value.Length);
    

【参考方案1】：

您需要从了解传入数据的格式开始。如果您录制的 wav 文件中没有音频，则说明有问题，尽管您必须在尝试访问之前调用 wave 文件编写器上的 Dispose。

【讨论】：

感谢 Mark Heath，第二天我发现我的 android 设备实际上并没有录制音频，所以流是空的，现在它可以完美运行，没有任何问题，抱歉回复晚了。