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
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