从PC实时流媒体音乐到Windows Phone

本文关键字:Windows Phone 音乐 流媒体 PC 实时 | 更新日期: 2023-09-27 17:53:17

我正在尝试开发一个Windows应用程序(WPF),它可以通过TCP连接(本地WiFi)在系统上播放任何内容。在接收端,我有Windows Phone 8应用程序,可以实时播放音频。

我试过了:

  1. 连接成功,数据传输正常。

     void sMixListner_DataAvailable(object sender, NAudio.Wave.WaveInEventArgs e)
    {
        try
        {
            if (writer != null)
            {
                SocketHandler.SocketManager.sendDataToClients(e.Buffer);
            }
        }
        catch { }
    } 
     public void sendDataToClients(byte[] music)
    {
        foreach (Socket client in clients)
        {
            try
            {
                client.Send(music);
            }
            catch { }
        }
    }
    

以上代码传输从WasapiLoopbackCapture类接收到的任何数据。

  1. 在手机上,我能够正确地接收所有字节[]数据,我正在将其写入MemoryStream。MemoryStream stream=new MemoryStream();公共无效ReceiveMessage(){

        var responseListener = new SocketAsyncEventArgs();
        responseListener.Completed += responseListener_Completed;
        var responseBuffer = new byte[MAX_BUFFER_SIZE];
        responseListener.SetBuffer(responseBuffer, 0, MAX_BUFFER_SIZE);
        _socket.ReceiveAsync(responseListener);
    }
    void responseListener_Completed(object sender, SocketAsyncEventArgs e)
    {
        stream.Write(e.Buffer, 0, e.BytesTransferred);
        if (!stopReceiving)
            ReceiveMessage();
    }
    

收到几秒钟后,我试图播放它:

public void play()
{
SoundEffect soundE = new SoundEffect(stream.ToArray(), 48000, AudioChannels.Mono);
soundE.CreateInstance();
FrameworkDispatcher.Update();
isPlaying = true;
soundE.Play();
}

我听到的都是噪音。我试着用以下方式写一个WaveHeader到流(来自诺基亚开发人员网站):

public void WriteWavHeader(Stream stream, int sampleRate)
    {
        const int bitsPerSample = 32;
        const int bytesPerSample = bitsPerSample / 8;
        var encoding = System.Text.Encoding.UTF8;
        // ChunkID Contains the letters "RIFF" in ASCII form (0x52494646 big-endian form).
        stream.Write(encoding.GetBytes("RIFF"), 0, 4);
        // NOTE this will be filled in later
        stream.Write(BitConverter.GetBytes(0), 0, 4);
        // Format Contains the letters "WAVE"(0x57415645 big-endian form).
        stream.Write(encoding.GetBytes("WAVE"), 0, 4);
        // Subchunk1ID Contains the letters "fmt " (0x666d7420 big-endian form).
        stream.Write(encoding.GetBytes("fmt "), 0, 4);
        // Subchunk1Size 16 for PCM. This is the size of therest of the Subchunk which follows this number.
        stream.Write(BitConverter.GetBytes(16), 0, 4);
        // AudioFormat PCM = 1 (i.e. Linear quantization) Values other than 1 indicate some form of compression.
        stream.Write(BitConverter.GetBytes((short)1), 0, 2);
        // NumChannels Mono = 1, Stereo = 2, etc.
        stream.Write(BitConverter.GetBytes((short)1), 0, 2);
        // SampleRate 8000, 44100, etc.
        stream.Write(BitConverter.GetBytes(sampleRate), 0, 4);
        // ByteRate = SampleRate * NumChannels * BitsPerSample/8
        stream.Write(BitConverter.GetBytes(sampleRate * bytesPerSample), 0, 4);
        // BlockAlign NumChannels * BitsPerSample/8 The number of bytes for one sample including all channels.
        stream.Write(BitConverter.GetBytes((short)(bytesPerSample)), 0, 2);
        // BitsPerSample 8 bits = 8, 16 bits = 16, etc.
        stream.Write(BitConverter.GetBytes((short)(bitsPerSample)), 0, 2);
        // Subchunk2ID Contains the letters "data" (0x64617461 big-endian form).
        stream.Write(encoding.GetBytes("data"), 0, 4);
        // NOTE to be filled in later
        stream.Write(BitConverter.GetBytes(0), 0, 4);
    }

录音部分是正确的,因为如果我用WavFileWriter写一个。wav文件,声音在播放时很好。

有人能帮我一下吗?我需要能够在我的手机上播放这个声音

从PC实时流媒体音乐到Windows Phone

WASAPI捕获是32位IEEE浮点数,而不是32位PCM,因此WAV头中的AudioFormat是错误的。IEEE是浮动的,但在您的情况下,我建议在通过网络发送音频之前转换为16位,以节省一点带宽。