root/dev/auconv.h

INCLUDED FROM

    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 $      */
    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  */
   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);
   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);
   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