1 /* $OpenBSD: mulaw.h,v 1.12 2005/04/14 01:24:20 pascoe 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 /* *_mts versions convert mono to stereo, in addition */ 41 42 /* Convert 8-bit mu-law to 16 bit unsigned linear. */ 43 extern void mulaw_to_ulinear16_le(void *, u_char *, int); 44 extern void mulaw_to_ulinear16_le_mts(void *, u_char *, int); 45 extern void mulaw_to_ulinear16_be(void *, u_char *, int); 46 extern void mulaw_to_ulinear16_be_mts(void *, u_char *, int); 47 /* Convert 8-bit mu-law to/from 16 bit signed linear. */ 48 extern void mulaw_to_slinear16_le(void *, u_char *, int); 49 extern void mulaw_to_slinear16_le_mts(void *, u_char *, int); 50 extern void mulaw_to_slinear16_be(void *, u_char *, int); 51 extern void mulaw_to_slinear16_be_mts(void *, u_char *, int); 52 extern void slinear16_to_mulaw_le(void *, u_char *, int); 53 /* Convert 8-bit mu-law to/from 8 bit unsigned linear. */ 54 extern void mulaw_to_ulinear8(void *, u_char *, int); 55 extern void ulinear8_to_mulaw(void *, u_char *, int); 56 /* Convert 8-bit mu-law to/from 8 bit signed linear. */ 57 extern void mulaw_to_slinear8(void *, u_char *, int); 58 extern void slinear8_to_mulaw(void *, u_char *, int); 59 /* Convert 8-bit a-law to 16 bit unsigned linear. */ 60 extern void alaw_to_ulinear16_le(void *, u_char *, int); 61 extern void alaw_to_ulinear16_be(void *, u_char *, int); 62 /* Convert 8-bit a-law to/from 16 bit signed linear. */ 63 extern void alaw_to_slinear16_le(void *, u_char *, int); 64 extern void alaw_to_slinear16_le_mts(void *, u_char *, int); 65 extern void alaw_to_slinear16_be(void *, u_char *, int); 66 extern void alaw_to_slinear16_be_mts(void *, u_char *, int); 67 extern void slinear16_to_alaw_le(void *, u_char *, int); 68 extern void slinear16_to_alaw_be(void *, u_char *, int); 69 /* Convert 8-bit a-law to/from 8 bit unsigned linear. */ 70 extern void alaw_to_ulinear8(void *, u_char *, int); 71 extern void ulinear8_to_alaw(void *, u_char *, int); 72 /* Convert 8-bit a-law to/from 8 bit signed linear. */ 73 extern void alaw_to_slinear8(void *, u_char *, int); 74 extern void slinear8_to_alaw(void *, u_char *, int); 75 /* Convert 8-bit a-law to/from mulaw */ 76 void alaw_to_mulaw(void *, u_char *, int); 77 void mulaw_to_alaw(void *, u_char *, int); 78 79 /* backwards compat for now */ 80 #if BYTE_ORDER == LITTLE_ENDIAN 81 #define mulaw_to_ulinear16 mulaw_to_ulinear16_le 82 #define alaw_to_ulinear16 alaw_to_ulinear16_le 83 #define mulaw_to_slinear16 mulaw_to_slinear16_le 84 #define mulaw_to_slinear16_mts mulaw_to_slinear16_le_mts 85 #define alaw_to_slinear16 alaw_to_slinear16_le 86 #define alaw_to_slinear16_mts alaw_to_slinear16_le_mts 87 #else 88 #define mulaw_to_ulinear16 mulaw_to_ulinear16_be 89 #define alaw_to_ulinear16 alaw_to_ulinear16_be 90 #define mulaw_to_slinear16 mulaw_to_slinear16_be 91 #define mulaw_to_slinear16_mts mulaw_to_slinear16_be_mts 92 #define alaw_to_slinear16 alaw_to_slinear16_be 93 #define alaw_to_slinear16_mts alaw_to_slinear16_be_mts 94 #endif 95