1/* $NetBSD: mulaw.h,v 1.20 2008/04/28 20:23:47 martin Exp $ */
2
3/*-
4 * Copyright (c) 1996 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by John T. Kohl.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31
32#ifndef _SYS_DEV_MULAW_H_
33#define _SYS_DEV_MULAW_H_
34#include <dev/audio_if.h>
35
36/* Convert 8-bit mu-law to/from 16 bit unsigned/signed linear. */
37extern stream_filter_factory_t mulaw_to_linear16;
38extern stream_filter_factory_t linear16_to_mulaw;
39/* Convert 8-bit mu-law to/from 8 bit unsigned/signed linear. */
40extern stream_filter_factory_t mulaw_to_linear8;
41extern stream_filter_factory_t linear8_to_mulaw;
42/* Convert 8-bit A-law to/from 16 bit unsigned/signed linear. */
43extern stream_filter_factory_t alaw_to_linear16;
44extern stream_filter_factory_t linear16_to_alaw;
45/* Convert 8-bit A-law to/from 8 bit unsigned/signed linear. */
46extern stream_filter_factory_t alaw_to_linear8;
47extern stream_filter_factory_t linear8_to_alaw;
48
49#endif /* _SYS_DEV_MULAW_H_ */
50