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/* $OpenBSD: auconv.h,v 1.8 2008/06/26 05:42:14 ray Exp $ */
/* $NetBSD: auconv.h,v 1.5 1999/11/01 18:12:19 augustss Exp $ */
/*-
* Copyright (c) 1997 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Lennart Augustsson.
*
* 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.
*/
/* Convert between signed and unsigned. */
extern void change_sign8(void *, u_char *, int);
extern void change_sign16_le(void *, u_char *, int);
extern void change_sign16_be(void *, u_char *, int);
/* Convert between little and big endian. */
extern void swap_bytes(void *, u_char *, int);
extern void swap_bytes_change_sign16_le(void *, u_char *, int);
extern void swap_bytes_change_sign16_be(void *, u_char *, int);
extern void change_sign16_swap_bytes_le(void *, u_char *, int);
extern void change_sign16_swap_bytes_be(void *, u_char *, int);
/* Byte expansion/contraction */
extern void linear8_to_linear16_le(void *, u_char *, int);
extern void linear8_to_linear16_be(void *, u_char *, int);
extern void linear16_to_linear8_le(void *, u_char *, int);
extern void linear16_to_linear8_be(void *, u_char *, int);
/* Byte expansion/contraction with sign change */
extern void ulinear8_to_linear16_le(void *, u_char *, int);
extern void ulinear8_to_linear16_be(void *, u_char *, int);
extern void linear16_to_ulinear8_le(void *, u_char *, int);
extern void linear16_to_ulinear8_be(void *, u_char *, int);
/* same as above, plus converting mono to stereo */
extern void noswap_bytes_mts(void *, u_char *, int);
extern void swap_bytes_mts(void *, u_char *, int);
extern void linear8_to_linear16_le_mts(void *, u_char *, int);
extern void linear8_to_linear16_be_mts(void *, u_char *, int);
extern void ulinear8_to_linear16_le_mts(void *, u_char *, int);
extern void ulinear8_to_linear16_be_mts(void *, u_char *, int);
extern void change_sign16_le_mts(void *, u_char *, int);
extern void change_sign16_be_mts(void *, u_char *, int);
extern void change_sign16_swap_bytes_le_mts(void *, u_char *, int);
extern void change_sign16_swap_bytes_be_mts(void *, u_char *, int);
void swap_bytes_change_sign16_le_mts(void *, u_char *, int);
void swap_bytes_change_sign16_be_mts(void *, u_char *, int);
/* 16-bit signed linear stereo to mono. drops every other sample */
void linear16_decimator(void *, u_char *, int);
void linear16_to_linear8_le_stm(void *, u_char *, int);
void linear16_to_linear8_be_stm(void *, u_char *, int);
void linear16_to_ulinear8_le_stm(void *, u_char *, int);
void linear16_to_ulinear8_be_stm(void *, u_char *, int);
void change_sign16_le_stm(void *, u_char *, int);
void change_sign16_be_stm(void *, u_char *, int);
void swap_bytes_stm(void *, u_char *, int);
void swap_bytes_change_sign16_be_stm(void *, u_char *, int);
void change_sign16_swap_bytes_le_stm(void *, u_char *, int);
/* backwards compat for now */
#if BYTE_ORDER == LITTLE_ENDIAN
#define change_sign16 change_sign16_le
#define change_sign16_swap_bytes swap_bytes_change_sign16_le
#define swap_bytes_change_sign16 swap_bytes_change_sign16_le
#define linear8_to_linear16 linear8_to_linear16_le
#define ulinear8_to_linear16 ulinear8_to_linear16_le
#define linear8_to_linear16_mts linear8_to_linear16_le_mts
#define ulinear8_to_linear16_mts ulinear8_to_linear16_le_mts
#define change_sign16_mts change_sign16_le_mts
#define change_sign16_swap_bytes_mts change_sign16_swap_bytes_le_mts
#else
#define change_sign16 change_sign16_be
#define change_sign16_swap_bytes swap_bytes_change_sign16_be
#define swap_bytes_change_sign16 swap_bytes_change_sign16_be
#define linear8_to_linear16 linear8_to_linear16_be
#define ulinear8_to_linear16 ulinear8_to_linear16_be
#define linear8_to_linear16_mts linear8_to_linear16_be_mts
#define ulinear8_to_linear16_mts ulinear8_to_linear16_be_mts
#define change_sign16_mts change_sign16_be_mts
#define change_sign16_swap_bytes_mts change_sign16_swap_bytes_be_mts
#endif
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