如何将短数组转换为字节数组 [英] how to convert short array to byte array

问题描述

我发现转换短到Byte数组和<一个href=\"http://stackoverflow.com/questions/5625573/byte-array-to-short-array-and-back-again-in-java\">byte阵列短阵，但也不短阵字节数组。

下面是code领导到转换

 而（！停止）
        {
            Log.i（地图，写入新数据缓冲区）;
            短[] =缓冲缓冲[IX +％buffers.length]。            N = recorder.read（缓冲液，0，buffer.length）;
            track.write（缓冲液，0，buffer.length）;            字节[]字节2 =新的字节[N];
 

我曾尝试

  INT I = 0;
              ByteBuffer的byteBuf = ByteBuffer.allocate（N）;
              而（buffer.length＆GT; = 1）{
                  byteBuf.putShort（缓冲[I]）;
                  我++;
        }字节2 = byteBuf.array（）;
 

和

  ByteBuffer.wrap（字节2）.order（ByteOrder.LITTLE_ENDIAN）.asShortBuffer（）把​​（缓冲）;
 

不过，我收到这两个错误（错误，如果不完全相同，但两个非常类似）：

  

13 05-29：41：12.021：W / AudioTrack（9758）：obtainBuffer（）的轨道0x30efa0
  禁用，重新启动

  
  

13 05-29：41：12.857：W / AudioWorker（9758）：读取错误的声音
  AudioWorker

  
  

13 05-29：41：12.857：W / AudioWorker（9758）：
  java.nio.BufferOverflowException

  
  

13 05-29：41：12.857：W / AudioWorker（9758）：在
  java.nio.ShortBuffer.put（ShortBuffer.java:422）

  
  

13 05-29：41：12.857：W / AudioWorker（9758）：在
  java.nio.ShortToByteBufferAdapter.put（ShortToByteBufferAdapter.java:210）

  
  

13 05-29：41：12.857：W / AudioWorker（9758）：在
  java.nio.ShortBuffer.put（ShortBuffer.java:391）

  
  

13 05-29：41：12.857：W / AudioWorker（9758）：在
  com.avispl.nicu.audio.AudioWorker.run（AudioWorker.java:126）

和刚需给尽可能多的信息尽可能这里是code使用的字节数组后

  Log.i（地图，测试）;
                //转换为ULAW
                读（字节2，O，N）;                //发送到服务器
                os.write（bytes2,0，bytes2.length）;                的System.out.println（读取动作+ buffer.length）;
                的System.out.println（数据+ Arrays.toString（缓冲））;
            }
 

解决方案

Java的短是16位的，而字节是一个8位的类型。您有试图插入 N 短裤到缓冲区这是 N 循环-bytes长;它需要 2 * N 字节长，以适应您的所有数据。

 的ByteBuffer byteBuf = ByteBuffer.allocate（2 * N）;
而（N＆GT; = 1）{
    byteBuf.putShort（缓冲[I]）;
    我++;
}
 

I have found converting a short to byte array, and byte array to short array, but not short array to byte array.

Here is the code leading up to the conversion

while(!stopped)
        { 
            Log.i("Map", "Writing new data to buffer");
            short[] buffer = buffers[ix++ % buffers.length];

            N = recorder.read(buffer,0,buffer.length);
            track.write(buffer, 0, buffer.length);

            byte[] bytes2 = new byte[N];

I have tried

              int i = 0;
              ByteBuffer byteBuf = ByteBuffer.allocate(N);
              while (buffer.length >= i) {
                  byteBuf.putShort(buffer[i]);
                  i++;
        }

bytes2 = byteBuf.array();

and

    ByteBuffer.wrap(bytes2).order(ByteOrder.LITTLE_ENDIAN).asShortBuffer().put(buffer);

However I receive this error on both (the error if not exactly the same but very similar for both):

05-29 13:41:12.021: W/AudioTrack(9758): obtainBuffer() track 0x30efa0 disabled, restarting

05-29 13:41:12.857: W/AudioWorker(9758): Error reading voice AudioWorker

05-29 13:41:12.857: W/AudioWorker(9758): java.nio.BufferOverflowException

05-29 13:41:12.857: W/AudioWorker(9758): at java.nio.ShortBuffer.put(ShortBuffer.java:422)

05-29 13:41:12.857: W/AudioWorker(9758): at java.nio.ShortToByteBufferAdapter.put(ShortToByteBufferAdapter.java:210)

05-29 13:41:12.857: W/AudioWorker(9758): at java.nio.ShortBuffer.put(ShortBuffer.java:391)

05-29 13:41:12.857: W/AudioWorker(9758): at com.avispl.nicu.audio.AudioWorker.run(AudioWorker.java:126)

And just to be give as much info as possible here is the code after that uses the byte array

Log.i("Map", "test");
                //convert to ulaw
                read(bytes2, 0, N);

                //send to server
                os.write(bytes2,0,bytes2.length);

                System.out.println("bytesRead "+buffer.length);
                System.out.println("data "+Arrays.toString(buffer));
            }

解决方案

Java short is a 16-bit type, and byte is an 8-bit type. You have a loop that tries to insert N shorts into a buffer that's N-bytes long; it needs to be 2*N bytes long to fit all your data.

ByteBuffer byteBuf = ByteBuffer.allocate(2*N);
while (N >= i) {
    byteBuf.putShort(buffer[i]);
    i++;
}

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