Annotation of sys/dev/mulaw.h, Revision 1.1.1.1
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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