/*
 * Compile with
 *
 *    cc -o audio_keys -O2 -s audio_keys.c -L/usr/X11R6/lib -lX11
 */


#include <stdio.h>
#include <stdlib.h>
#include <X11/Xlib.h>

int main(int argc, char *argv[])
{
    struct {
	int keycode;
	int modifier;
	char *action;
    } actions[] = {
	{ 174, 0, "amixer -c1 sset PCM 5%-" },		// volume down
	{ 176, 0, "amixer -c1 sset PCM 5%+" },		// volume up
	{ 160, 0, "amixer -c1 sset PCM toggle" },	// mute
	{ 162, 1, "xmms --show-main-window" },		// shift play/pause
	{ 162, 0, "xmms --play-pause" },		// play/pause
	{ 164, 0, "xmms --stop" },			// stop
	{ 144, 0, "xmms --rew" },			// rewind
	{ 153, 0, "xmms --fwd" }			// forward
    };
	    
    Display *display;
    int i;

    if ((display = XOpenDisplay(NULL)) == NULL) {
	fprintf(stderr, "Cannot open display\n");
	exit(1);
    }

    for (i = 0; i < sizeof(actions)/sizeof(actions[0]); i++)
	XGrabKey(display,
		 actions[i].keycode,
		 AnyModifier,
		 DefaultRootWindow(display),
		 False,
		 GrabModeAsync,
		 GrabModeAsync);

    for (;;) {
	XEvent e;
	XNextEvent(display, &e);

	if (e.type == KeyPress) {
	    for (i = 0; i < sizeof(actions)/sizeof(actions[0]); i++) {
		if (actions[i].keycode == e.xkey.keycode &&
		    (actions[i].modifier == 0 || (actions[i].modifier & e.xkey.state))) {
		    printf("%s\n", actions[i].action);
		    system(actions[i].action);
		    break;
		}
	    }
	}
    }
    return 0;
}