NetBSD/sys/dev/mulaw.h

57 lines
2.7 KiB
C

/* $NetBSD: mulaw.h,v 1.18 2005/01/10 22:01:37 kent Exp $ */
/*-
* Copyright (c) 1996 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by John T. Kohl.
*
* 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.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``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 FOUNDATION 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.
*/
#ifndef _SYS_DEV_MULAW_H_
#define _SYS_DEV_MULAW_H_
#include <dev/audio_if.h>
/* Convert 8-bit mu-law to/from 16 bit unsigned/signed linear. */
extern stream_filter_factory_t mulaw_to_linear16;
extern stream_filter_factory_t linear16_to_mulaw;
/* Convert 8-bit mu-law to/from 8 bit unsigned/signed linear. */
extern stream_filter_factory_t mulaw_to_linear8;
extern stream_filter_factory_t linear8_to_mulaw;
/* Convert 8-bit A-law to/from 16 bit unsigned/signed linear. */
extern stream_filter_factory_t alaw_to_linear16;
extern stream_filter_factory_t linear16_to_alaw;
/* Convert 8-bit A-law to/from 8 bit unsigned/signed linear. */
extern stream_filter_factory_t alaw_to_linear8;
extern stream_filter_factory_t linear8_to_alaw;
#endif /* _SYS_DEV_MULAW_H_ */