JAVA开发播放器问题?

Question

本人准备做一个PPT播放器(提取PPT中的图片,解说文字,录音,目录等,制作一个播放器),但不知道JAVA能不能支持,如果支持,应该要用到那些插件支持,请高手指教!!!如果JAVA不支持,那么用什么语言可以开发?谢谢!

Answer 1

可以的啊,,用awt.image,javax.sound.sampled 这个是主要的吧,,我用这个开发了一个播放器,注意一下缓存方面的大小,具体的代码可以看一下,,
import javax.sound.sampled.*;
import java.io.*;
import java.util.*;
public class DataPlay extends Thread implements LineListener
{
private byte[] databyte;
private int datasize,con=1,listener=1;
private AudioInputStream soundStream;
private SourceDataLine soundline;
private AudioFormat soundformat;
PlayEvent pe1;
PlayListener pl;
private String playevent1="END";
PlayThread pt=new PlayThread();
public void DataPlay()
{}
public void dataclose()
        {
          if(listener==1)
          {
            soundline.stop();
          }
          if(listener==2)
          {
            listener=1;
            soundline.removeLineListener(this);
            soundline.stop();
            soundline.close();
            //soundline=null;
          }
soundStream=null;
soundformat=null;
con=2;
}
public void play(AudioInputStream soundStream,AudioFormat soundformat,SourceDataLine soundline)
{
this.soundStream=soundStream;
this.soundline=soundline;
soundline.addLineListener(this);
                listener=2;
databyte=new byte[204800];
try
{
if(soundStream.Supported())
{
soundStream.(0);
                                soundStream.reset();
}
}
catch (Exception e)
{
} try
{
soundline.open(soundformat,20480);//通知音频线将要放入音频数据的格式,并设置缓存!
}
catch(LineUnavailableException elua1)
{
System.out.println("line open:存得不到控制!\n"+elua1);
System.exit(0);
}
catch(IllegalArgumentException eia1)
{
System.out.println("line open:缓冲不能放入数据!\n"+eia1);
System.exit(0);
}
catch(IllegalStateException eis)
{
System.out.println("line open:以被打开了!\n"+eis);
System.exit(0);
}
catch(SecurityException es1)
{
System.out.println("line opne:数据不安全!\n"+es1);
System.exit(0);
}
if(soundline.isOpen())
{
soundline.start();
this.start();
}
else
{
System.out.println("it can not open!");
System.exit(0);
}
}
public void run()
{
pt.start();
do
{
playback();//读完soundbyte的数据后,再到playback()方法里再进行读取数据!
soundline.write(databyte,0,datasize);//往缓存里写入数据!
                        if(con==2)
                        {
                          soundline.stop();
                        }
}while(con==1);
}
private void playback()
{
try
{
if(soundStream.available()>102400)
{
datasize=soundStream.read(databyte);
}
else if(soundStream.available()<=0)
{
soundline.stop();
con=2;
}
else
{
soundStream.read(databyte,0,soundStream.available());
datasize=soundStream.available();
datasize-=datasize%4;
con=2;
}
}
catch (IOException eio7)
{
System.out.println("data->byte:I/O出现异常!\n"+eio7);
System.exit(0);
}
}
class PlayThread extends Thread
{
public PlayThread()
{}
public void run()
{
int position,old=0;
for (;listener==2 ; )
{
try
{
 position=soundline.getFramePosition();
}
catch(NullPointerException enp)
{
                                  position=old;
 System.out.println("position is null!\n"+enp);
}
if(position-old==0 && position>0 && old>0)
{
con=2;
old=0;
                                        System.out.println("3");
break;
}
else
{
old=position;
}
try
{
this.sleep(1000);
}
catch (InterruptedException eipt)
{
System.out.println("sleep:不能转为睡眠!\n"+eipt);
}
}
                        if(listener==2)
                        {
                          soundline.close();
                        } }
};
public void update(LineEvent event)
{
if(event.getType()==LineEvent.Type.CLOSE)
{
this.yield();
pt.yield();
soundline=null;
pe1=new PlayEvent(playevent1);//开始发生事件!
                        System.out.println("1");
firePlayEvent(pe1);
soundline.removeLineListener(this);
                        listener=1;
System.gc();
}
}
public void firePlayEvent(PlayEvent pe)
{
pl.validatePlay(pe);
}
public void addPlayListener(PlayListener pl)
{
this.pl=pl;
}
};
这里最后是事件!

Answer 2

好像找不到下面两个类:
PlayEvent pe1;
PlayListener pl;

Answer 3

我做的是一个一个的BEAN啊,那些都必须是自已做的BEAN,这个是播放数据的BEAN,前面还有数据流,数据类型之类的转换,就不在这个BEAN里面,