Question

import java.io.File;
import java.util.Scanner;

class DataManage{

    public static void main(String[] args){

        MusicControl musicControler;
        File clip;
        Scanner scan = new Scanner(System.in);

        int data;

        while(true){
            data = scan.nextInt();

            clip = new File(new StringBuffer().append("LaunchPad/music/").append(data).append(".wav").toString());
            musicControler = new MusicControl(clip);        
            musicControler.start();
        }
    }
}

import java.io.File;

import javax.sound.sampled.*;

class MusicControl extends Thread{

    private Clip clip;
    private File sound;
    private FloatControl volume;

    public MusicControl(File sound){
            this.sound = sound;
            musicSetup();
    }

    public void run(){
        try{    
            clip.start();
            Thread.sleep(clip.getMicrosecondLength()/1000);
        }catch(Exception e){
            System.out.println(e);  
        }
    }

    public void musicSetup(){
        try{
            clip = AudioSystem.getClip();
            clip.open(AudioSystem.getAudioInputStream(sound));
        }catch(Exception e){
            System.out.println(e);
        }
    }
}

我试图在我的Raspberry pi2中播放声音。这个程序在Window7中运行得很好。但是，它在Raspberry pi2中很奇怪。当我启动程序时，它运行良好，直到它计数为8。如果播放次数超过8次，则打印

javax.sound.sampled.LineUnavailaleException: line with format PCM_SIGNED 44100.0 Hz, 16 bit, mono, 2 bytes/frame, little-endian not supported.

我该如何解决？请帮我一把。

Answer 1

错误在于此方法

public MusicControl(File Sound){
        sound = Sound;
        musicSetup();
}

您正在定义一个类似File Sound的变量，它是2种类型，没有名称。您必须使用变量名称替换Sound。

Raspberry pi播放wav文件

1 个答案: