1/* $FreeBSD$	*/
2
3/*-
4 * Copyright (c) 1996 Jason R. Thorpe <thorpej@and.com>
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 * 3. All advertising materials mentioning features or use of this software
16 *    must display the following acknowledgements:
17 *	This product includes software developed by Jason R. Thorpe
18 *	for And Communications, http://www.and.com/
19 * 4. The name of the author may not be used to endorse or promote products
20 *    derived from this software without specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
23 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
24 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
25 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
26 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
27 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
28 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
29 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
30 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * SUCH DAMAGE.
33 */
34
35struct element_type {
36	const	char *et_name;	/* name; i.e. "picker, "slot", etc. */
37	int	et_type;	/* type number */
38};
39
40struct changer_command {
41	const	char *cc_name;	/* command name */
42				/* command handler */
43	int	(*cc_handler)(const char *, int, char **);
44};
45
46struct special_word {
47	const	char *sw_name;	/* special word */
48	int	sw_value;	/* token value */
49};
50
51/* sw_value */
52#define SW_INVERT	1	/* set "invert media" flag */
53#define SW_INVERT1	2	/* set "invert media 1" flag */
54#define SW_INVERT2	3	/* set "invert media 2" flag */
55
56/* Environment variable to check for default changer. */
57#define CHANGER_ENV_VAR		"CHANGER"
58