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Annotation of sys/dev/mulaw.h, Revision 1.1

1.1     ! nbrk        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