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/* $OpenBSD: mulaw.h,v 1.14 2008/06/26 05:42:14 ray Exp $ */
/* $NetBSD: mulaw.h,v 1.11 1999/11/01 18:12:19 augustss 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.
*
* 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.
*/
/* *_mts versions convert mono to stereo, in addition */
/* Convert 8-bit mu-law to 16 bit unsigned linear. */
extern void mulaw_to_ulinear16_le(void *, u_char *, int);
extern void mulaw_to_ulinear16_le_mts(void *, u_char *, int);
extern void mulaw_to_ulinear16_be(void *, u_char *, int);
extern void mulaw_to_ulinear16_be_mts(void *, u_char *, int);
/* Convert 8-bit mu-law to/from 16 bit signed linear. */
extern void mulaw_to_slinear16_le(void *, u_char *, int);
extern void mulaw_to_slinear16_le_mts(void *, u_char *, int);
extern void mulaw_to_slinear16_be(void *, u_char *, int);
extern void mulaw_to_slinear16_be_mts(void *, u_char *, int);
extern void slinear16_to_mulaw_le(void *, u_char *, int);
/* Convert 8-bit mu-law to/from 8 bit unsigned linear. */
extern void mulaw_to_ulinear8(void *, u_char *, int);
extern void ulinear8_to_mulaw(void *, u_char *, int);
/* Convert 8-bit mu-law to/from 8 bit signed linear. */
extern void mulaw_to_slinear8(void *, u_char *, int);
extern void slinear8_to_mulaw(void *, u_char *, int);
/* Convert 8-bit a-law to 16 bit unsigned linear. */
extern void alaw_to_ulinear16_le(void *, u_char *, int);
extern void alaw_to_ulinear16_be(void *, u_char *, int);
/* Convert 8-bit a-law to/from 16 bit signed linear. */
extern void alaw_to_slinear16_le(void *, u_char *, int);
extern void alaw_to_slinear16_le_mts(void *, u_char *, int);
extern void alaw_to_slinear16_be(void *, u_char *, int);
extern void alaw_to_slinear16_be_mts(void *, u_char *, int);
extern void slinear16_to_alaw_le(void *, u_char *, int);
extern void slinear16_to_alaw_be(void *, u_char *, int);
/* Convert 8-bit a-law to/from 8 bit unsigned linear. */
extern void alaw_to_ulinear8(void *, u_char *, int);
extern void ulinear8_to_alaw(void *, u_char *, int);
/* Convert 8-bit a-law to/from 8 bit signed linear. */
extern void alaw_to_slinear8(void *, u_char *, int);
extern void slinear8_to_alaw(void *, u_char *, int);
/* Convert 8-bit a-law to/from mulaw */
void alaw_to_mulaw(void *, u_char *, int);
void mulaw_to_alaw(void *, u_char *, int);
/* Convert 16-bit signed linear stereo to 8-bit a-law mono */
void slinear16_to_alaw_le_stm(void *, u_char *, int);
void slinear16_to_alaw_be_stm(void *, u_char *, int);
/* Convert 16-bit signed linear stereo to 8-bit mu-law mono */
void slinear16_to_mulaw_le_stm(void *, u_char *, int);
void slinear16_to_mulaw_be_stm(void *, u_char *, int);
/* backwards compat for now */
#if BYTE_ORDER == LITTLE_ENDIAN
#define mulaw_to_ulinear16 mulaw_to_ulinear16_le
#define alaw_to_ulinear16 alaw_to_ulinear16_le
#define mulaw_to_slinear16 mulaw_to_slinear16_le
#define mulaw_to_slinear16_mts mulaw_to_slinear16_le_mts
#define alaw_to_slinear16 alaw_to_slinear16_le
#define alaw_to_slinear16_mts alaw_to_slinear16_le_mts
#else
#define mulaw_to_ulinear16 mulaw_to_ulinear16_be
#define alaw_to_ulinear16 alaw_to_ulinear16_be
#define mulaw_to_slinear16 mulaw_to_slinear16_be
#define mulaw_to_slinear16_mts mulaw_to_slinear16_be_mts
#define alaw_to_slinear16 alaw_to_slinear16_be
#define alaw_to_slinear16_mts alaw_to_slinear16_be_mts
#endif
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