我正在尝试将android中的流媒体直播到服务器。我的程序运行正常。

开始流式传输的方法是:

private void startStreaming() {

    Thread startRecord = new Thread(
            new Runnable() {
                @Override
                public void run() {
                    try {
                        socket = new DatagramSocket();
                    } catch (SocketException e) {
                        e.printStackTrace();
                    }

                    buffer = new byte[minBufSize];

                    DatagramPacket packet;

                    try {
                         destination = InetAddress.getByName("10.31.0.12");
                    } catch (UnknownHostException e) {
                        e.printStackTrace();
                    }

                    record = new AudioRecord(MediaRecorder.AudioSource.MIC,sampleRate,channelConfig,audioFormat,minBufSize * 10);

                    record.startRecording();

                    while ( status )
                    {
                        minBufSize = record.read(buffer,0,buffer.length);
                        packet = new DatagramPacket(buffer,buffer.length,destination,port);
                        Log.d(LOG,"Writing in status " + destination );
                        try {
                            Log.d(LOG, "Trying to send. " + minBufSize);
                            socket.send(packet);
                            Log.d(LOG, "Sent successfully.");
                        } catch (IOException e) {

                            Log.d(LOG,"Socket is not sending properly.");
                            e.printStackTrace();
                        }
                    }

                }
            }
    );
    startRecord.start();
}


停止记录的方法:

public void stopRecording(View view) {
    start.setVisibility(View.VISIBLE);
    stop.setVisibility(View.GONE);
    status = false;
    Log.d(LOG,"I am about to release the record.");
    record.release();
    Log.d(LOG, "I have released.");
}


我正在使用minBufSize

 minBufSize = record.read(buffer,0,buffer.length);


如果我继续停止播放录音,minBufSize会继续减小。
值从1280变为512,从256变为-3,最后我得到:


  java.lang.NegativeArraySizeException:-3在
  com.example.khan.safevoicerecorder.MainActivity $ 1.run(MainActivity.java:81)


为什么会这样呢?请帮我解决这个问题。

最佳答案

您使用当前的buffer创建minBufSize。然后,您的循环读取一会儿:minBufSize = record.read(buffer,0,buffer.length)。由于读取最多为buffer.length个字节,因此现在您可以减少minBufSize了。

下次开始记录时,将使用较小的新minBufSize创建缓冲区。同样,读取将最多为buffer.length个字节(现在小于上次)。

冲洗并重复-最终,您将获得一个非常小的缓冲区。我猜这给你-3错误值。最后,当minBufSize-3时,您的buffer分配将失败;数组不能为负数。

07-25 23:30