/******************************************************
*Code by Rudi, his site http://www.koeniglich.de/     *
******************************************************/

#include <stdio.h>
#include <X11/Xlib.h>
#define KEY_MISCELLANY
#include <X11/keysymdef.h>
#include <unistd.h>
#include <stdlib.h>

#define KEY_VOLUME_ADD	176
#define KEY_VOLUME_SUB	174
#define KEY_MUTE	160
#define KEY_PLAY_PAUSE	162
#define KEY_STOP	164
#define KEY_REWIND	144
#define KEY_FASTFORWARD	153
#define KEY_WLAN	136
#define KEY_BATTERY	135
#define KEY_EJECT	137

Display *dpy;
static int keylist[] = {
  KEY_VOLUME_ADD,
  KEY_VOLUME_SUB,
  KEY_MUTE,
  //commented out -- using gnome for these
  //KEY_PLAY_PAUSE,
  //KEY_STOP,
  //KEY_REWIND,
  //KEY_FASTFORWARD,
  //KEY_WLAN,
  //KEY_BATTERY,
  //KEY_EJECT,
  0
};

void
GrabKeyAll(unsigned int keycode, unsigned int modi)
{
  int i;

  for (i = ScreenCount(dpy) - 1; i >= 0; i--)
    {
      XGrabKey(dpy, keycode, modi, RootWindow(dpy, i),
      	False, GrabModeAsync, GrabModeAsync);
#ifdef DEBUG
      printf("grab keycode %d, modi %d, Root %d, a %d, b %d\n", 
             keycode, modi, RootWindow(dpy, i), a, b);
      XSync(dpy, False);
#endif
    }
}

void UngrabKeyAll(unsigned int keycode, unsigned int modi)
{
  int i;

  for (i = ScreenCount(dpy) - 1; i >= 0; i--)
    XUngrabKey(dpy, keycode, modi, RootWindow(dpy, i));
}

int
main(int ac, char *av[])
{
  int i, muted = 0;
  XEvent e;


  dpy = XOpenDisplay(0);
  if(!dpy)
    {
      printf("Cannot open the display\n");
      exit(1);
    }

  if (fork())
    return 0;
    
  for(i = 0; keylist[i]; i++)
    GrabKeyAll(keylist[i], AnyModifier);

  for(;;)
    {
      XNextEvent(dpy, &e);
      XAllowEvents(dpy, AsyncKeyboard, CurrentTime);
      XFlush(dpy);

      if(e.type != KeyPress)
        continue;

      switch(e.xkey.keycode)
	{
	  case KEY_VOLUME_ADD:
	    system("amixer sset Master 1+ 1+ unmute -q");
	    break;

	  case KEY_VOLUME_SUB:
	    system("amixer sset Master 1- 1- -q");
	    break;

	  case KEY_MUTE:
		// changed to amixer the default in FC2
	    if(muted)
	    	system("amixer sset Master 3 3 unmute -q");
	    else
	    	system("amixer sset Master 3 3 mute -q");
	    muted = !muted;
	    break;

	  case KEY_PLAY_PAUSE:
	    break;

	  case KEY_STOP:
	    for(i = 0; keylist[i]; i++)
	      UngrabKeyAll(keylist[i], AnyModifier);
	    exit(0);
	    break;

	  case KEY_REWIND:
	    break;

	  case KEY_FASTFORWARD:
	    //system("xterm -u8 -fn -misc-fixed-medium-r-normal--15-140-75-75-c-90-iso10646-1 &");
	    break;

	  case KEY_WLAN:
	    break;

	  case KEY_BATTERY:
	    break;

	  case KEY_EJECT:
	    //system("eject cdrom&");
	    break;
	}
      }
  return 0;
}