1 /*-
 2  * Copyright (c) 2007 Ariff Abdullah <ariff@FreeBSD.org>
 3  * All rights reserved.
 4  *
 5  * Redistribution and use in source and binary forms, with or without
 6  * modification, are permitted provided that the following conditions
 7  * are met:
 8  * 1. Redistributions of source code must retain the above copyright
 9  *    notice, this list of conditions and the following disclaimer.
10  * 2. Redistributions in binary form must reproduce the above copyright
11  *    notice, this list of conditions and the following disclaimer in the
12  *    documentation and/or other materials provided with the distribution.
13  *
14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24  * SUCH DAMAGE.
25  *
26  * $FreeBSD$
27  */
28 
29 #ifndef _SND_UNIT_H_
30 #define _SND_UNIT_H_
31 
32 #define SND_UNIT_UMIN   16
33 #define SND_UNIT_UMAX   2048
34 
35 int snd_max_u(void);
36 int snd_max_d(void);
37 int snd_max_c(void);
38 int snd_unit2u(int);
39 int snd_unit2d(int);
40 int snd_unit2c(int);
41 int snd_u2unit(int);
42 int snd_d2unit(int);
43 int snd_c2unit(int);
44 int snd_mkunit(int, int, int);
45 
46 void snd_unit_init(void);
47 
48 #define SND_U_MASK      (snd_u2unit(snd_max_u()))
49 #define SND_D_MASK      (snd_d2unit(snd_max_d()))
50 #define SND_C_MASK      (snd_c2unit(snd_max_c()))
51 
52 #endif /* !_SND_UNIT_H_ */