208 lines
4.5 KiB
C
208 lines
4.5 KiB
C
/* $NetBSD: auconv.h,v 1.5 2008/04/28 20:24:12 martin Exp $ */
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/*-
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* Copyright (c) 1997 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Lennart Augustsson.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/types.h>
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#include <sys/audioio.h>
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/* Convert between signed and unsigned. */
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static inline void change_sign8(u_char *, int);
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static inline void change_sign16_le(u_char *, int);
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static inline void change_sign16_be(u_char *, int);
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static inline void change_sign32_le(u_char *, int);
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static inline void change_sign32_be(u_char *, int);
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/* Convert between little and big endian. */
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static inline void swap_bytes(u_char *, int);
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static inline void swap_bytes32(u_char *, int);
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static inline void swap_bytes_change_sign16_le(u_char *, int);
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static inline void swap_bytes_change_sign16_be(u_char *, int);
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static inline void change_sign16_swap_bytes_le(u_char *, int);
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static inline void change_sign16_swap_bytes_be(u_char *, int);
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static inline void swap_bytes_change_sign32_le(u_char *, int);
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static inline void swap_bytes_change_sign32_be(u_char *, int);
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static inline void change_sign32_swap_bytes_le(u_char *, int);
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static inline void change_sign32_swap_bytes_be(u_char *, int);
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static inline void
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change_sign8(u_char *p, int cc)
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{
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while (--cc >= 0) {
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*p ^= 0x80;
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++p;
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}
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}
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static inline void
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change_sign16_le(u_char *p, int cc)
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{
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while ((cc -= 2) >= 0) {
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p[1] ^= 0x80;
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p += 2;
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}
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}
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static inline void
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change_sign16_be(u_char *p, int cc)
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{
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while ((cc -= 2) >= 0) {
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p[0] ^= 0x80;
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p += 2;
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}
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}
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static inline void
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change_sign32_le(u_char *p, int cc)
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{
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while ((cc -= 4) >= 0) {
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p[3] ^= 0x80;
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p += 4;
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}
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}
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static inline void
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change_sign32_be(u_char *p, int cc)
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{
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while ((cc -= 4) >= 0) {
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p[0] ^= 0x80;
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p += 4;
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}
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}
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static inline void
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swap_bytes(u_char *p, int cc)
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{
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u_char t;
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while ((cc -= 2) >= 0) {
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t = p[0];
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p[0] = p[1];
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p[1] = t;
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p += 2;
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}
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}
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static inline void
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swap_bytes32(u_char *p, int cc)
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{
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u_char t;
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while ((cc -= 4) >= 0) {
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t = p[0];
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p[0] = p[3];
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p[3] = t;
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t = p[1];
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p[1] = p[2];
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p[2] = t;
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p += 4;
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}
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}
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static inline void
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swap_bytes_change_sign16_le(u_char *p, int cc)
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{
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u_char t;
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while ((cc -= 2) >= 0) {
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t = p[1];
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p[1] = p[0] ^ 0x80;
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p[0] = t;
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p += 2;
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}
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}
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static inline void
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swap_bytes_change_sign16_be(u_char *p, int cc)
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{
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u_char t;
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while ((cc -= 2) >= 0) {
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t = p[0];
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p[0] = p[1] ^ 0x80;
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p[1] = t;
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p += 2;
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}
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}
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static inline void
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change_sign16_swap_bytes_le(u_char *p, int cc)
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{
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swap_bytes_change_sign16_be(p, cc);
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}
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static inline void
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change_sign16_swap_bytes_be(u_char *p, int cc)
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{
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swap_bytes_change_sign16_le(p, cc);
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}
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static inline void
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swap_bytes_change_sign32_le(u_char *p, int cc)
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{
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u_char t;
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while ((cc -= 4) >= 0) {
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t = p[3];
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p[3] = p[0] ^ 0x80;
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p[0] = t;
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t = p[1];
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p[1] = p[2];
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p[2] = t;
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p += 4;
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}
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}
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static inline void
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swap_bytes_change_sign32_be(u_char *p, int cc)
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{
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u_char t;
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while ((cc -= 4) >= 0) {
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t = p[0];
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p[0] = p[3] ^ 0x80;
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p[3] = t;
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t = p[1];
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p[1] = p[2];
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p[2] = t;
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p += 4;
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}
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}
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static inline void
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change_sign32_swap_bytes_le(u_char *p, int cc)
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{
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swap_bytes_change_sign32_be(p, cc);
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}
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static inline void
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change_sign32_swap_bytes_be(u_char *p, int cc)
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{
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swap_bytes_change_sign32_le(p, cc);
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}
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