/**************************************************************************
* Copyright (c) 2004 by Chris Gray, /k/ Embedded Java Solutions.          *
* All rights reserved.                                                    *
*                                                                         *
* Redistribution and use in source and binary forms, with or without      *
* modification, are permitted provided that the following conditions      *
* are met:                                                                *
* 1. Redistributions of source code must retain the above copyright       *
*    notice, this list of conditions and the following disclaimer.        *
* 2. Redistributions in binary form must reproduce the above copyright    *
*    notice, this list of conditions and the following disclaimer in the  *
*    documentation and/or other materials provided with the distribution. *
* 3. Neither the name of /k/ Embedded Java Solutions nor the names of     *
*    other contributors may be used to endorse or promote products        *
*    derived from this software without specific prior written permission.*
*                                                                         *
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED          *
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF    *
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.    *
* IN NO EVENT SHALL /K/ EMBEDDED JAVA SOLUTIONS OR OTHER CONTRIBUTORS BE  *
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR     *
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF    *
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR         *
* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,   *
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE    *
* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN  *
* IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.                           *
**************************************************************************/

package com.acunia.wonka.rudolph;

import java.io.*;

/**
 ** Implementation of Toolkit.beep() for Oscar.
 */
class OscarBeep extends BeepImpl {

  /**
   ** Path to the beep device.
   */
  static final String OSCAR_BEEP_DEVICE = "/proc/sys/karo/beep";
    
  FileOutputStream beep_fos;
  
  boolean flag = false;
  int internalFrequency = -1;
  
  public OscarBeep()
  {
      try
      {
        File beep_file = new File(OSCAR_BEEP_DEVICE);
        beep_fos = new FileOutputStream(beep_file);
      }
      catch(IOException ex)
      {
          ex.printStackTrace();
      }
  }
  
  public synchronized void beep() {
      
      //long begin = System.currentTimeMillis();
      
      //int[] oldVolume = getCurrentVolume();
      
      //System.out.println("(1) "+(System.currentTimeMillis()-begin));
      
      //System.out.println("currentVolume: ["+oldVolume[0]+":"+oldVolume[1]+"]");
      
      //setVolume(this.volume, this.volume);
      
      //System.out.println("(2) "+(System.currentTimeMillis()-begin));
      
      if(this.internalFrequency==-1)
      {
          this.internalFrequency = this.frequency*100;
      }      
      
      setFrequency();            
      // due to problesm with the beep pseudo file
      if(this.flag)
      {
        this.internalFrequency += 1;
      }
      else
      {
        this.internalFrequency -= 1;
      }
      
      this.flag = !this.flag;
      
      //System.out.println("(3) "+(System.currentTimeMillis()-begin));
      
      switchBeepOn();
      
      //System.out.println("(4) "+(System.currentTimeMillis()-begin));
      
      try
      {
        Thread.sleep(this.duration);
      }
      catch(InterruptedException ex)
      {          
      }
      
      //System.out.println("(5) "+(System.currentTimeMillis()-begin));
      
      switchBeepOff();
      
      //System.out.println("(6) "+(System.currentTimeMillis()-begin));
      
      //setVolume(oldVolume[0], oldVolume[1]);
      
      //System.out.println("(7) "+(System.currentTimeMillis()-begin));
  }
    
  protected void switchBeepOn()
  {
      switchBeep("-1");
  }
  
  protected void switchBeepOff()
  {
      switchBeep("0");
  }  
  
  protected void setFrequency()
  {
      switchBeep("0 "+this.internalFrequency);
  }
  
  protected void switchBeep(String param)
  {
      //System.out.println("write param: '"+param+"'");
      
    try {
        
        
        //PrintStream beep_ps = new PrintStream(beep_fos);		
        
        beep_fos.write(param.getBytes());
		
//        beep_ps.print(param);                                
		
//        beep_ps.close();
        beep_fos.flush();        
    }
    catch (IOException ioe) {
      ioe.printStackTrace();
    }      
  }
}