node.js - 处理WebRTC byte []流？

Question

我基本上是试图记录来自webrtc流的音频块，我已经能够借助此资源HTML Audio Capture streaming to Node.js发送二进制数据。

我正在使用netty-socketio，因为该库在客户端与socket-io配合良好。
这是我的服务器端点:

server.addEventListener("audio-blob", byte[].class, (socketIOClient, bytes, ackRequest) -> {
    byteArrayList.add(bytes);
});

server.addEventListener("audio-blob-end", Object.class, (socket, string, ackRequest) -> {
    ByteArrayInputStream in = new ByteArrayInputStream(byteArrayList.getArray());
    AudioInputStream audiIn = new AudioInputStream(in, getAudioFormat(), 48000l);
    AudioFileFormat.Type fileType = AudioFileFormat.Type.WAVE;
    File wavFile = new File("RecordAudio.wav");
    AudioSystem.write(audiIn,fileType,wavFile);
});

格式设置:

public static AudioFormat getAudioFormat() {
    float sampleRate = 48000;
    int sampleSizeInBits = 8;
    int channels = 2;
    boolean signed = true;
    boolean bigEndian = true;
    AudioFormat format = new AudioFormat(sampleRate, sampleSizeInBits,
            channels, signed, bigEndian);
    return format;
}

我正在使用此类来收集字节数组(是的，我知道这种解决方案的风险)

class ByteArrayList {
   private List<Byte> bytesList;

   public ByteArrayList() {
       bytesList = new ArrayList<Byte>();
   }

   public void add(byte[] bytes) {
       add(bytes, 0, bytes.length);
   }

   public void add(byte[] bytes, int offset, int length) {
       for (int i = offset; i < (offset + length); i++) {
           bytesList.add(bytes[i]);
       }
   }

   public int size(){
       return bytesList.size();
   }

   public byte[] getArray() {
       byte[] bytes = new byte[bytesList.size()];
       for (int i = 0; i < bytesList.size(); i++) {
           bytes[i] = bytesList.get(i);
       }
       return bytes;
   }
}

尽管生成的wav文件仅播放噪音，但没有录制。我究竟做错了什么？

Answer 1

当Google:四处寻找答案时，我偶然发现了该资源how to save a wav file

我做错的是我在AudioInputstream构造函数参数上具有固定大小:

new AudioInputStream(in, getAudioFormat(), 48000l)

将其更改为:

new AudioInputStream(in, getAudioFormat(),byteArrayList.getArray().length);