FreeBSD/Linux Kernel Cross Reference
sys/dev/sound/unit.h
1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
3 *
4 * Copyright (c) 2007 Ariff Abdullah <ariff@FreeBSD.org>
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 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 *
28 * $FreeBSD$
29 */
30
31 #ifndef _SND_UNIT_H_
32 #define _SND_UNIT_H_
33
34 #define SND_UNIT_UMIN 16
35 #define SND_UNIT_UMAX 2048
36
37 int snd_max_u(void);
38 int snd_max_d(void);
39 int snd_max_c(void);
40 int snd_unit2u(int);
41 int snd_unit2d(int);
42 int snd_unit2c(int);
43 int snd_u2unit(int);
44 int snd_d2unit(int);
45 int snd_c2unit(int);
46 int snd_mkunit(int, int, int);
47
48 void snd_unit_init(void);
49
50 #define SND_U_MASK (snd_u2unit(snd_max_u()))
51 #define SND_D_MASK (snd_d2unit(snd_max_d()))
52 #define SND_C_MASK (snd_c2unit(snd_max_c()))
53
54 #endif /* !_SND_UNIT_H_ */
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