1 /* $OpenBSD: mulaw.h,v 1.14 2008/06/26 05:42:14 ray 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 * 20 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 22 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 23 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 24 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 30 * POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33 /* *_mts versions convert mono to stereo, in addition */ 34 35 /* Convert 8-bit mu-law to 16 bit unsigned linear. */ 36 extern void mulaw_to_ulinear16_le(void *, u_char *, int); 37 extern void mulaw_to_ulinear16_le_mts(void *, u_char *, int); 38 extern void mulaw_to_ulinear16_be(void *, u_char *, int); 39 extern void mulaw_to_ulinear16_be_mts(void *, u_char *, int); 40 /* Convert 8-bit mu-law to/from 16 bit signed linear. */ 41 extern void mulaw_to_slinear16_le(void *, u_char *, int); 42 extern void mulaw_to_slinear16_le_mts(void *, u_char *, int); 43 extern void mulaw_to_slinear16_be(void *, u_char *, int); 44 extern void mulaw_to_slinear16_be_mts(void *, u_char *, int); 45 extern void slinear16_to_mulaw_le(void *, u_char *, int); 46 /* Convert 8-bit mu-law to/from 8 bit unsigned linear. */ 47 extern void mulaw_to_ulinear8(void *, u_char *, int); 48 extern void ulinear8_to_mulaw(void *, u_char *, int); 49 /* Convert 8-bit mu-law to/from 8 bit signed linear. */ 50 extern void mulaw_to_slinear8(void *, u_char *, int); 51 extern void slinear8_to_mulaw(void *, u_char *, int); 52 /* Convert 8-bit a-law to 16 bit unsigned linear. */ 53 extern void alaw_to_ulinear16_le(void *, u_char *, int); 54 extern void alaw_to_ulinear16_be(void *, u_char *, int); 55 /* Convert 8-bit a-law to/from 16 bit signed linear. */ 56 extern void alaw_to_slinear16_le(void *, u_char *, int); 57 extern void alaw_to_slinear16_le_mts(void *, u_char *, int); 58 extern void alaw_to_slinear16_be(void *, u_char *, int); 59 extern void alaw_to_slinear16_be_mts(void *, u_char *, int); 60 extern void slinear16_to_alaw_le(void *, u_char *, int); 61 extern void slinear16_to_alaw_be(void *, u_char *, int); 62 /* Convert 8-bit a-law to/from 8 bit unsigned linear. */ 63 extern void alaw_to_ulinear8(void *, u_char *, int); 64 extern void ulinear8_to_alaw(void *, u_char *, int); 65 /* Convert 8-bit a-law to/from 8 bit signed linear. */ 66 extern void alaw_to_slinear8(void *, u_char *, int); 67 extern void slinear8_to_alaw(void *, u_char *, int); 68 /* Convert 8-bit a-law to/from mulaw */ 69 void alaw_to_mulaw(void *, u_char *, int); 70 void mulaw_to_alaw(void *, u_char *, int); 71 /* Convert 16-bit signed linear stereo to 8-bit a-law mono */ 72 void slinear16_to_alaw_le_stm(void *, u_char *, int); 73 void slinear16_to_alaw_be_stm(void *, u_char *, int); 74 /* Convert 16-bit signed linear stereo to 8-bit mu-law mono */ 75 void slinear16_to_mulaw_le_stm(void *, u_char *, int); 76 void slinear16_to_mulaw_be_stm(void *, u_char *, int); 77 78 /* backwards compat for now */ 79 #if BYTE_ORDER == LITTLE_ENDIAN 80 #define mulaw_to_ulinear16 mulaw_to_ulinear16_le 81 #define alaw_to_ulinear16 alaw_to_ulinear16_le 82 #define mulaw_to_slinear16 mulaw_to_slinear16_le 83 #define mulaw_to_slinear16_mts mulaw_to_slinear16_le_mts 84 #define alaw_to_slinear16 alaw_to_slinear16_le 85 #define alaw_to_slinear16_mts alaw_to_slinear16_le_mts 86 #else 87 #define mulaw_to_ulinear16 mulaw_to_ulinear16_be 88 #define alaw_to_ulinear16 alaw_to_ulinear16_be 89 #define mulaw_to_slinear16 mulaw_to_slinear16_be 90 #define mulaw_to_slinear16_mts mulaw_to_slinear16_be_mts 91 #define alaw_to_slinear16 alaw_to_slinear16_be 92 #define alaw_to_slinear16_mts alaw_to_slinear16_be_mts 93 #endif 94