1 /* $OpenBSD: mulaw.h,v 1.6 2001/05/01 01:49:48 aaron Exp $ */ 2 /* $NetBSD: mulaw.h,v 1.11 1999/11/01 18:12:19 augustss Exp $ */ 3 4 /*- 5 * Copyright (c) 1996 The NetBSD Foundation, Inc. 6 * All rights reserved. 7 * 8 * This code is derived from software contributed to The NetBSD Foundation 9 * by John T. Kohl. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. All advertising materials mentioning features or use of this software 20 * must display the following acknowledgement: 21 * This product includes software developed by the NetBSD 22 * Foundation, Inc. and its contributors. 23 * 4. Neither the name of The NetBSD Foundation nor the names of its 24 * contributors may be used to endorse or promote products derived 25 * from this software without specific prior written permission. 26 * 27 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 28 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 29 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 30 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 31 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 32 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 33 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 34 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 35 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 36 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 37 * POSSIBILITY OF SUCH DAMAGE. 38 */ 39 40 /* Convert 8-bit mu-law to 16 bit unsigned linear. */ 41 extern void mulaw_to_ulinear16_le __P((void *, u_char *buf, int cnt)); 42 extern void mulaw_to_ulinear16_be __P((void *, u_char *buf, int cnt)); 43 /* Convert 8-bit mu-law to 16 bit signed linear. */ 44 extern void mulaw_to_slinear16_le __P((void *, u_char *buf, int cnt)); 45 extern void mulaw_to_slinear16_be __P((void *, u_char *buf, int cnt)); 46 /* Convert 8-bit mu-law to/from 8 bit unsigned linear. */ 47 extern void mulaw_to_ulinear8 __P((void *, u_char *buf, int cnt)); 48 extern void ulinear8_to_mulaw __P((void *, u_char *buf, int cnt)); 49 /* Convert 8-bit mu-law to/from 8 bit signed linear. */ 50 extern void mulaw_to_slinear8 __P((void *, u_char *buf, int cnt)); 51 extern void slinear8_to_mulaw __P((void *, u_char *buf, int cnt)); 52 /* Convert 8-bit a-law to 16 bit unsigned linear. */ 53 extern void alaw_to_ulinear16_le __P((void *, u_char *buf, int cnt)); 54 extern void alaw_to_ulinear16_be __P((void *, u_char *buf, int cnt)); 55 /* Convert 8-bit a-law to 16 bit signed linear. */ 56 extern void alaw_to_slinear16_le __P((void *, u_char *buf, int cnt)); 57 extern void alaw_to_slinear16_be __P((void *, u_char *buf, int cnt)); 58 /* Convert 8-bit a-law to/from 8 bit unsigned linear. */ 59 extern void alaw_to_ulinear8 __P((void *, u_char *buf, int cnt)); 60 extern void ulinear8_to_alaw __P((void *, u_char *buf, int cnt)); 61 /* Convert 8-bit a-law to/from 8 bit signed linear. */ 62 extern void alaw_to_slinear8 __P((void *, u_char *buf, int cnt)); 63 extern void slinear8_to_alaw __P((void *, u_char *buf, int cnt)); 64 65 /* backwards compat for now */ 66 #if BYTE_ORDER == LITTLE_ENDIAN 67 #define mulaw_to_ulinear16 mulaw_to_slinear16_le 68 #define alaw_to_ulinear16 alaw_to_ulinear16_le 69 #define mulaw_to_slinear16 mulaw_to_ulinear16_le 70 #define alaw_to_slinear16 alaw_to_slinear16_le 71 #else 72 #define mulaw_to_ulinear16 mulaw_to_slinear16_be 73 #define alaw_to_ulinear16 alaw_to_ulinear16_be 74 #define mulaw_to_slinear16 mulaw_to_ulinear16_be 75 #define alaw_to_slinear16 alaw_to_slinear16_be 76 #endif 77