如何读取每个样本2字节大小的声卡输入流？(Java)

import javax.sound.sampled.*;

public class SoundCardReader {
    public static void main(String[] args) {
        try {
            // 获取默认的音频输入设备
            Mixer.Info[] mixerInfos = AudioSystem.getMixerInfo();
            Mixer mixer = AudioSystem.getMixer(mixerInfos[0]);

            // 设置音频格式
            AudioFormat format = new AudioFormat(AudioFormat.Encoding.PCM_SIGNED, 44100, 16, 2, 4, 44100, false);

            // 打开音频输入流
            DataLine.Info dataLineInfo = new DataLine.Info(TargetDataLine.class, format);
            TargetDataLine line = (TargetDataLine) mixer.getLine(dataLineInfo);
            line.open(format);
            line.start();

            // 读取声卡输入流
            byte[] buffer = new byte[2];
            while (true) {
                int bytesRead = line.read(buffer, 0, buffer.length);
                // 处理读取到的数据
                // ...
            }

            // 关闭音频输入流
            line.stop();
            line.close();
        } catch (LineUnavailableException e) {
            e.printStackTrace();
        }
    }
}