Annotation of sys/dev/auconv.h, Revision 1.1.1.1
1.1 nbrk 1: /* $OpenBSD: auconv.h,v 1.6 2002/05/06 02:34:57 nate Exp $ */
2: /* $NetBSD: auconv.h,v 1.5 1999/11/01 18:12:19 augustss Exp $ */
3:
4: /*-
5: * Copyright (c) 1997 The NetBSD Foundation, Inc.
6: * All rights reserved.
7: *
8: * This code is derived from software contributed to The NetBSD Foundation
9: * by Lennart Augustsson.
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: /* Convert between signed and unsigned. */
41: extern void change_sign8(void *, u_char *, int);
42: extern void change_sign16_le(void *, u_char *, int);
43: extern void change_sign16_be(void *, u_char *, int);
44: /* Convert between little and big endian. */
45: extern void swap_bytes(void *, u_char *, int);
46: extern void swap_bytes_change_sign16_le(void *, u_char *, int);
47: extern void swap_bytes_change_sign16_be(void *, u_char *, int);
48: extern void change_sign16_swap_bytes_le(void *, u_char *, int);
49: extern void change_sign16_swap_bytes_be(void *, u_char *, int);
50: /* Byte expansion/contraction */
51: extern void linear8_to_linear16_le(void *, u_char *, int);
52: extern void linear8_to_linear16_be(void *, u_char *, int);
53: extern void linear16_to_linear8_le(void *, u_char *, int);
54: extern void linear16_to_linear8_be(void *, u_char *, int);
55: /* Byte expansion/contraction with sign change */
56: extern void ulinear8_to_linear16_le(void *, u_char *, int);
57: extern void ulinear8_to_linear16_be(void *, u_char *, int);
58: extern void linear16_to_ulinear8_le(void *, u_char *, int);
59: extern void linear16_to_ulinear8_be(void *, u_char *, int);
60:
61: /* same as above, plus converting mono to stereo */
62: extern void noswap_bytes_mts(void *, u_char *, int);
63: extern void swap_bytes_mts(void *, u_char *, int);
64: extern void linear8_to_linear16_le_mts(void *, u_char *, int);
65: extern void linear8_to_linear16_be_mts(void *, u_char *, int);
66: extern void ulinear8_to_linear16_le_mts(void *, u_char *, int);
67: extern void ulinear8_to_linear16_be_mts(void *, u_char *, int);
68: extern void change_sign16_le_mts(void *, u_char *, int);
69: extern void change_sign16_be_mts(void *, u_char *, int);
70: extern void change_sign16_swap_bytes_le_mts(void *, u_char *, int);
71: extern void change_sign16_swap_bytes_be_mts(void *, u_char *, int);
72:
73: /* backwards compat for now */
74: #if BYTE_ORDER == LITTLE_ENDIAN
75: #define change_sign16 change_sign16_le
76: #define change_sign16_swap_bytes swap_bytes_change_sign16_le
77: #define swap_bytes_change_sign16 swap_bytes_change_sign16_le
78: #define linear8_to_linear16 linear8_to_linear16_le
79: #define ulinear8_to_linear16 ulinear8_to_linear16_le
80: #define linear8_to_linear16_mts linear8_to_linear16_le_mts
81: #define ulinear8_to_linear16_mts ulinear8_to_linear16_le_mts
82: #define change_sign16_mts change_sign16_le_mts
83: #define change_sign16_swap_bytes_mts change_sign16_swap_bytes_le_mts
84: #else
85: #define change_sign16 change_sign16_be
86: #define change_sign16_swap_bytes swap_bytes_change_sign16_be
87: #define swap_bytes_change_sign16 swap_bytes_change_sign16_be
88: #define linear8_to_linear16 linear8_to_linear16_be
89: #define ulinear8_to_linear16 ulinear8_to_linear16_be
90: #define linear8_to_linear16_mts linear8_to_linear16_be_mts
91: #define ulinear8_to_linear16_mts ulinear8_to_linear16_be_mts
92: #define change_sign16_mts change_sign16_be_mts
93: #define change_sign16_swap_bytes_mts change_sign16_swap_bytes_be_mts
94: #endif
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