Java播放音频,支持暂停播放停止继续

之前发过一篇关于播放音频的文章，但是占用CPU过高，这里是改进版

改进内容

修复部分bugCPU占用率减少安全性提高

Wav类

package player;import java.io.File;import java.io.IOException;import javax.sound.sampled.AudioFormat;import javax.sound.sampled.AudioInputStream;import javax.sound.sampled.AudioSystem;import javax.sound.sampled.DataLine;import javax.sound.sampled.LineUnavailableException;import javax.sound.sampled.SourceDataLine;import javax.sound.sampled.UnsupportedAudioFileException;public class wav extends Thread{private String path="audio.wav";private AudioFormat format=null;private AudioInputStream aistream=null;private float sampleRate=0;private float framelength=0;private DataLine.Info datalineinfo=null;private SourceDataLine dataline=null;private boolean pause=false;private boolean stop=false;private int played=0;private int play_from=0;boolean pass=false;private boolean playing=false;public wav(){}public void setPath(String p){path=p;}public String getPath(){return path;}public void stopPlaying(){stop=true;}public boolean isStopped(){return stop;}public int getPlayed(){return played;}public void playFrom(int t){play_from=t;}public float getSecLength(){return framelength/sampleRate;}public void setPause(boolean p){pause=p;}public boolean isPaused(){return pause;}public boolean isPlaying(){return playing;}public void set(){try{aistream=AudioSystem.getAudioInputStream(new File(path));format=aistream.getFormat();sampleRate=format.getSampleRate();framelength=aistream.getFrameLength();datalineinfo=new DataLine.Info(SourceDataLine.class, format);dataline=(SourceDataLine)AudioSystem.getLine(datalineinfo);}catch(LineUnavailableException err){System.out.println("LineUnavailableException");}catch(UnsupportedAudioFileException err){System.out.println("UnsupportedAudioFileException");}catch(IOException err){System.out.println("IOException");}}public void run(){try{byte[] bytes=new byte[512];int length=0;dataline.open(format);dataline.start();played=0;playing=true;stop=false;while(stop==false){if(pause==true){Thread.sleep(1500);continue;}if(pass==true){if((length=aistream.read(bytes))<=0){break;}played+=1;continue;}if(played<play_from){if((length=aistream.read(bytes))>0){played+=1;continue;}else{break;}}if((length=aistream.read(bytes))>0){dataline.write(bytes, 0, length);played+=1;}else{break;}}stop=true;aistream.close();dataline.drain();dataline.close();aistream=null;format=null;datalineinfo=null;dataline=null;}catch(Exception err){System.out.println("Error");err.printStackTrace();}catch(Error err){System.out.println("Error: can not play the audio");err.printStackTrace();}}}

Audio

package player;import java.io.File;import java.io.IOException;public class audio extends wav{public audio(String path){try{if(new File(path+".wav").exists()){new File(path+".wav").delete();}Process p=Runtime.getRuntime().exec("ffmpeg.exe -i \""+path+"\" -f wav \""+path+".wav\"");try{p.waitFor();}catch(Exception err){}}catch(IOException err){err.printStackTrace();}this.setPath(path+".wav");}public audio(String path, boolean del){try{if(new File(path+".wav").exists()){}else{Process p=Runtime.getRuntime().exec("ffmpeg.exe -i \""+path+"\" -f wav \""+path+".wav\"");try{p.waitFor();}catch(Exception err){}}}catch(IOException err){err.printStackTrace();}this.setPath(path+".wav");}}

getlength

package player;public class getlength{public getlength(){}public static int get(String path){audio au=new audio(path);au.pass=true;au.set();au.start();while(au.isStopped()!=true){try{Thread.sleep(1000);}catch(InterruptedException err){}}return au.getPlayed();}public static int getWavLength(String path){wav au=new wav();au.setPath(path);au.pass=true;au.set();au.start();while(au.isStopped()!=true){try{Thread.sleep(1000);}catch(InterruptedException err){}}return au.getPlayed();}}

//Audio类使用方法audio Audio=new Audio("path");//如果碰到相同文件名的文件删除重新编译//时间使用久，安全audio Audio=new Audio("path", false);//如果碰到相同文件名的文件不要删掉重新编译//时间使用短，相对不安全//推荐使用//注意:Audio类使用时需要在根目录放置ffmpeg.exe供编译转码，下载方式见之前的文章//Wav类使用方法(Audio)wav Wav=new wav();Wav.setPath("path");//设置路径//注意:使用Wav类不需要ffmpeg.exe//Wav/Audio类方法String getPath(); //获取路径void stopPlaying(); //停止播放boolean isStopped(); //是否停止播放intPlayed(); //播放进度void playFrom(int t); //设置播放位置float setSecLength(); //获取长度(秒)void setPause(boolean pause); //设置是否暂停boolean isPaused(); //是否暂停boolean isPlaying(); //是否正在播放Wav.pass=true; //跳过Wav.pass=false; //停止跳过//getlength类基本用法int getWavLength(String path); //获取Wav文件长度int get(String path); //获取音频长度，需要ffmpeg.exe

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