audioplayer.jad

JAVA-Applet的录音机程序,提供录制,播放,用户接口等功能.

package collegesoft.audio.play;

import java.io.*;
import java.util.*;
import sun.audio.*;
import collegesoft.util.*;
import collegesoft.audio.*;

public class AudioPlayer extends InputStream implements Runnable{
	
    public static final short MIN_WORD=-32768;
    public static final short MAX_WORD=32767;
    public static final short gsm_FAC[]={18431,20479,22527,24575,26623,28671,30719,32767};
    public static final short gsm_QLB[]={3277,11469,21299,32767};
    private static final int MAX_FRAME_READ=100;
    public static final short FRAME_SIZE=33;
    private static final int chunk_size=3300;
    private short dp0[]=new short[280];
    private short u[]=new short[8];;
    private short LARpp[][]=new short[2][8];
    private short j;
    private short nrp=40;
    private short v[]=new short[9];
    private short msr;
    private InputStream player_input;
	/////////////////////////////////////////////
	private Vector listeners=new Vector();
    private OutputStream po;
    private InputStream pi;
	private boolean pause=true;
	
	private static boolean playing=false;
	private static AudioStream audiostream=null;	
	//////////
	int len=165;
	boolean readOver=true;
	int c=0;
	int[] b={-40,32,-94,-31,90,80,0,73,36,-110,73,36};
	long test;
	byte[] data=new byte[1200];
	//boolean readdataOver=false;
	boolean decoded=false;
	int decodelen=0;
	byte ttt[]=new byte[33];
	
	public AudioPlayer(){
//		for(int i=0;i<1200;i++)data[i]=127;
/*		int i=0x2e736e64;
        byte byte0=32;
        byte byte1=-1;
        int j=1;
        char c='\u1F40';
        int k=1;
        byte byte2=24;		
		data[0]=(byte)(i>>>24&0xff);
        data[1]=(byte)(i>>>16&0xff);
        data[2]=(byte)(i>>>8&0xff);
        data[3]=(byte)(i&0xff);
		//au file's location
        data[4]=(byte)(byte0>>>24&0xff);
        data[5]=(byte)(byte0>>>16&0xff);
        data[6]=(byte)(byte0>>>8&0xff);
        data[7]=(byte)(byte0&0xff);
		//au file's samples
        data[8]=(byte)(byte1>>>24&0xff);
        data[9]=(byte)(byte1>>>16&0xff);
        data[10]=(byte)(byte1>>>8&0xff);
        data[11]=(byte)(byte1&0xff);
		//au file's format
        data[12]=(byte)(j>>>24&0xff);
        data[13]=(byte)(j>>>16&0xff);
        data[14]=(byte)(j>>>8&0xff);
        data[15]=(byte)(j&0xff);
		//au file's rate
        data[16]=(byte)(c>>>24&0xff);
        data[17]=(byte)(c>>>16&0xff);
        data[18]=(byte)(c>>>8&0xff);
        data[19]=(byte)(c&0xff);
		//au file's channels
        data[20]=(byte)(k>>>24&0xff);
        data[21]=(byte)(k>>>16&0xff);
        data[22]=(byte)(k>>>8&0xff);
        data[23]=(byte)(k&0xff);
		//au file's info
        for(int l=byte2;l<byte0;l++)data[l]=(byte)0;*/
	}

	////////////////
////////////////////////
	public int read()throws IOException{
        throw new IOException("Unsupported version of read() who did that ?");
    }

	public int read1()throws IOException{
		int rt=-1;
		while(true){
			if(!readOver){
				rt=player_input.read();
				c++;
				readOver=(c==len);
				return rt;
			}else{
				if(c==len){
					rt=player_input.read();
					if(rt==-1)throw new IOException("READ_STREAM_OVER");
					if(rt>1)throw new IOException("READ_STREAM_ERROR");
					c=0;
					readOver=(rt==0);
				}else{
					c++;
					return rt(c-1);
				}
			}
		}
	}
	public int read1(byte abyte0[], int i, int j)throws IOException{
        if(j<=0)return 0;
        int k=read1();
        if(k==-1)return -1;
        abyte0[i]=(byte)k;
        int i1=1;
        try{
            while(i1<j){
                int l=read1();
                if(l==-1)break;
                if(abyte0!=null)abyte0[i+i1]=(byte)l;
                i1++;
            }
        }catch(IOException _ex){}
        return i1;
	}
    public int read(byte abyte0[], int i1, int j1)throws IOException{
		//if(!decoded)System.arraycopy(data,32,abyte0,0,400);
		//else System.arraycopy(data,432,abyte0,0,400);
		
			decoded=false;
			while(!decoded){
				get_frame(ttt,0);
				process_decode(1,ttt,null);
			}
			decoded=false;
			System.arraycopy(data,32,abyte0,0,400);
		
		//System.out.println("read Data i1(start)="+i1+",j1(length)="+j1+","+(System.currentTimeMillis()-test));//k+","+l);
		//test=System.currentTimeMillis();
		//for(int i=i1;i<i1+j1;i++)data[i1]=(byte)(i*Math.random()*128);
        //System.arraycopy(data, 32, abyte0, i1, j1);
        return j1;
    }
	public int rt(int i){
		int x=i%33;
		if(x<12)return b[x];
		else return b[5+((x-12)%7)];
	}
///////////////////////////
	public void addAudioPlayListener(AudioPlayListener lter){
		listeners.addElement(lter);
	}
	synchronized void notifyListener(int type){
		AudioPlayEvent evt=new AudioPlayEvent(type);
		for(Enumeration enu=listeners.elements();enu.hasMoreElements();)
			((AudioPlayListener)enu.nextElement()).onAudioPlayEvent(evt);
	}
	public static void writeAudataerTo(OutputStream out)throws IOException{
        int i=0x2e736e64;
        byte byte0=32;
        byte byte1=-1;
        int j=1;
        char c='\u1F40';
        int k=1;
        byte byte2=24;
		//au file's id
        out.write(i>>>24&0xff);
        out.write(i>>>16&0xff);
        out.write(i>>>8&0xff);
        out.write(i&0xff);
		//au file's location
        out.write(byte0>>>24&0xff);
        out.write(byte0>>>16&0xff);
        out.write(byte0>>>8&0xff);
        out.write(byte0&0xff);
		//au file's samples
        out.write(byte1>>>24&0xff);
        out.write(byte1>>>16&0xff);
        out.write(byte1>>>8&0xff);
        out.write(byte1&0xff);
		//au file's format
        out.write(j>>>24&0xff);
        out.write(j>>>16&0xff);
        out.write(j>>>8&0xff);
        out.write(j&0xff);
		//au file's rate
        out.write(c>>>24&0xff);
        out.write(c>>>16&0xff);
        out.write(c>>>8&0xff);
        out.write(c&0xff);
		//au file's channels
        out.write(k>>>24&0xff);
        out.write(k>>>16&0xff);
        out.write(k>>>8&0xff);
        out.write(k&0xff);
		//au file's info
        for(int l=byte2;l<byte0;l++)out.write(0);
	}
    public void run(){
		try{
			System.out.println("playing.---....");
			process_frame(po);
			System.out.println("play over.---....");
			notifyListener(AudioPlayEvent.PLAY_OVER);
			playing=false;
		}catch(IOException e){
			if("READ_STREAM_ERROR".equalsIgnoreCase(e.getMessage())){
				notifyListener(AudioPlayEvent.PLAY_ERR);
			}else if("READ_STREAM_OVER".equalsIgnoreCase(e.getMessage())){
				notifyListener(AudioPlayEvent.PLAY_OVER);
			}else notifyListener(AudioPlayEvent.PLAY_ERR);
			playing=false;
			System.out.println("io_"+e.toString());
		}
	}

	/////////////////////////////////////////////////////
	/////////////////////////////////////////////////////
	/////////////////////////////////////////////////////
	/////////////////////////////////////////////////////
	public void suspend_play(){
		pause=true;
	}
	public void resume_play(){
		if(!pause)return;
		pause=false;
	}
    public void stop_play(){
		try{
			if(po!=null){
				po.close();
				po=null;
			}
			if(pi!=null){
				pi.close();
				pi=null;
			}
		}catch(Exception e){}
        sun.audio.AudioPlayer.player.stop(audiostream);
        playing=false;
    }
    public void start_play(InputStream inp){
		this.player_input=inp;
		try{
			if(po!=null){
				po.close();
				po=null;
			}
		}catch(Exception e){}
		try{
			if(pi!=null){
				pi.close();
				pi=null;
			}
		}catch(Exception e){}
		try{
			audiostream.close();
			audiostream=null;
		}catch(Exception ee){}
		try{
			po=new PipeOutputStream();
			pi=new PipeInputStream((PipeOutputStream)po,8192);
			writeAudataerTo(po);
		//	audiostream=new AudioStream(pi);
		//	sun.audio.AudioPlayer.player.stop(audiostream);
		//	sun.audio.AudioPlayer.player.start(audiostream);
			sun.audio.AudioPlayer.player.stop(this);
			sun.audio.AudioPlayer.player.start(this);
			playing=true;
		//	new Thread(this).start();
		}catch(Exception e){}
    }
	/////////////////////////////////////////////////////
	/////////////////////////////////////////////////////
	/////////////////////////////////////////////////////
	/////////////////////////////////////////////////////
/////////////////////////////////////////////////////////////////
/////////////////////////////////////////////////////////////////
/////////////////////////////////////////////////////////////////
   public void process_frame(OutputStream outputstream) throws IOException{
        byte abyte0[]=new byte[165];
        boolean flag=false;
        int k=0;
        for(int l=0;k!=-1;l=0){
            for(int i=0;i<5&&k!=-1;i++){//读0.1秒数据
                k=get_frame(abyte0,l);
                if(k!=-1)l+=k;
            }
            if(k!=-1)process_decode(5,abyte0,outputstream);
			else{
				if(k==-1&&l<165){
				    int i1=l/33;
				    process_decode(i1,abyte0,outputstream);
				}
            }
        }
    }	
    private int get_frame(byte abyte0[],int i) throws IOException{
        int k=33;
        int l=0;
        int i1;
        for(i1=read1(abyte0,i+l,k);i1>0&&i1<k;i1=read1(abyte0,i+l,k)){
            l+=i1;
            k-=i1;
        }
        if(i1<0)return i1;
        else return i1+l;
    }
    private void process_decode(int i,byte abyte0[],OutputStream outputstream) throws IOException{
        byte abyte1[]=new byte[33];
        int l=0;
        for(int k=0;k<i;k++){
            System.arraycopy(abyte0,l,abyte1,0,33);
            l+=33;
            int ai[]=gsm_decode_java(abyte1);
            ulaw_output(outputstream,ai);