@Override
  public int codecToPcm(byte[] bufferIn, float[] bufferOut) {

    if (bufferIn.length > 0) {
      for (int i = 0; i < bufferIn.length; i++) {
        bufferOut[i] = (float) G711.ulaw2linear((int) bufferIn[i]);
      }

      return bufferOut.length;
    } else {
      return 0;
    }
  }