/*      $NetBSD: kbd.c,v 1.1 2010/01/11 02:16:51 pooka Exp $    */

/*
* Copyright (c) 2010 Antti Kantee.  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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 THE AUTHOR OR 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.
*/

/*
* Experimental proof-of-concept program:
*
* Read keyboard events from a USB keyboard using rump drivers.
*/

#include <sys/types.h>
#include <sys/time.h>

#include <dev/wscons/wsconsio.h>

#include <rump/rump.h>
#include <rump/rump_syscalls.h>

#include <err.h>
#include <paths.h>
#include <string.h>
#include <stdio.h>
#include <stdlib.h>

#define SHIFT (-0x20)

int
main(int argc, char *argv[])
{
       struct wscons_event *wev;
       int shift = 0;
       char buf[128];
       int fd;

       rump_boot_sethowto(RUMP_AB_VERBOSE);
       rump_init();

       fd = rump_sys_open("/dev/wskbd", 0);
       if (fd == -1)
               err(1, "open");

       while (rump_sys_read(fd, buf, sizeof(buf)) > 0) {
               const char *typestr;

               /* XXX: timespec in 5.0 vs. -current */
               wev = (void *)buf;

               switch (wev->type) {
               case WSCONS_EVENT_KEY_UP:
                       typestr = "up";
                       if (wev->value == 0xe1 || wev->value == 0xe5)
                               shift = 0;
                       break;
               case WSCONS_EVENT_KEY_DOWN:
                       typestr = "down";
                       if (wev->value == 0xe1 || wev->value == 0xe5)
                               shift = SHIFT;
                       break;
               default:
                       typestr = "unknown";
                       break;
               }
               printf("event type: %d (%s)\n", wev->type, typestr);
               printf("value 0x%x", wev->value);
               /*
                * There's probably a value-to-readable tool somewhere
                * in the tree, but i'm not sure where or how to use it,
                * so I'll just punt with the supersimple version for now.
                */
               if (wev->value >= 0x04 && wev->value <= 0x1d)
                       printf(" (%c)", wev->value - 0x04 + 'a' + shift);
               printf("\n");
       }
}