Source code: irate/client/ExternalPlayer.java

   // Copyright 2003 Anthony Jones
   
   package irate.client;
   
   import java.io.File;
   import java.io.FileNotFoundException;
   import java.io.IOException;
   
   public class ExternalPlayer implements Player {
  
    private String name;
    private String path;
    private final int ACTION_PAUSE = 0;
    private final int ACTION_PLAY = 1;
    private final int ACTION_CLOSE = 2;
    private int action;
    private boolean paused;
    private Process process;
    private long playTime;
    
    public ExternalPlayer(String name, String path) throws FileNotFoundException {
      this(name, new String[] { path });
    }
  
    public ExternalPlayer(String name, String[] paths) throws FileNotFoundException {
      this.name = name;
      for (int i = 0; i < paths.length; i++) {
        if (new File(paths[i]).exists()) {
          this.path = paths[i];
          return;
        }
      }
      StringBuffer msg = new StringBuffer();
      for (int i = 0; i < paths.length; i++) {
        if (i != 0)
          msg.append(" ");
        msg.append(paths[i]);
      }
      throw new FileNotFoundException(msg.toString());
    }
  
    public String getName() {
      return name;
    }
  
    public void setPaused(boolean paused) {
      this.paused = paused;
      if (paused) {
        action = ACTION_PAUSE;
        process.destroy();
      }
    }
  
    public boolean isPaused() {
      return paused;
    }
  
    public String[] formatResumeArgument()
    {
      return null;
    }
  
    /**
     * Get the number of milliseconds of play time so far for the song
     * currently being played.
     */
    protected long getPlayTime()
    {
      return playTime;
    }
  
    public void play(File file) throws PlayerException {
      playTime = 0;
      do {
        try {
          action = ACTION_PLAY;
    String[] resumeArg = formatResumeArgument();
    String[] args;
    if (resumeArg == null)
      args = new String[2];
    else {
      args = new String[resumeArg.length+2];
      System.arraycopy(resumeArg, 0, args, 1, resumeArg.length);
          }
    args[0] = path;
    args[args.length-1] = file.getPath();
          process = Runtime.getRuntime().exec(args);
        }
        catch (IOException e) {
          e.printStackTrace();
          throw new PlayerException(e.toString());
        }
        long start = System.currentTimeMillis();
        try {
          process.waitFor();
          if (!paused && process.exitValue() != 0) 
            throw new PlayerException("extern player returned " + process.exitValue());
        }
        catch (InterruptedException e) {
         e.printStackTrace();
       }
       if (paused) {
   long timePlayed = System.currentTimeMillis() - start;
   playTime += timePlayed;
       }
       while (paused) { 
         try {
           Thread.sleep(100);
         }
         catch (InterruptedException ie) {
           ie.printStackTrace();
         }
       }
       if (action == ACTION_CLOSE) 
         throw new PlayerException("extern player closed");
     } while (action != ACTION_PLAY);
   }
 
   public void close() {
     if (process != null) {
       action = ACTION_CLOSE;
       process.destroy();
     }
   }
 }