1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* 23 * Copyright (c) 1992-2001 by Sun Microsystems, Inc. 24 * All rights reserved. 25 */ 26 27 #ifndef _MULTIMEDIA_ARCHDEP_H 28 #define _MULTIMEDIA_ARCHDEP_H 29 30 #pragma ident "%Z%%M% %I% %E% SMI" 31 32 #ifdef __cplusplus 33 extern "C" { 34 #endif 35 36 /* 37 * Machine-dependent and implementation-dependent definitions 38 * are placed here so that source code can be portable among a wide 39 * variety of machines. 40 */ 41 42 /* 43 * The following macros are used to generate architecture-specific 44 * code for handling byte-ordering correctly. 45 * 46 * Note that these macros *do not* work for in-place transformations. 47 */ 48 49 #if defined(mc68000) || defined(sparc) 50 #define DECODE_SHORT(from, to) *((short *)(to)) = *((short *)(from)) 51 #define DECODE_LONG(from, to) *((long *)(to)) = *((long *)(from)) 52 #define DECODE_FLOAT(from, to) *((float *)(to)) = *((float *)(from)) 53 #define DECODE_DOUBLE(from, to) *((double *)(to)) = *((double *)(from)) 54 #endif /* big-endian */ 55 56 #if defined(i386) || defined(__ppc) 57 #define DECODE_SHORT(from, to) \ 58 ((char *)(to))[0] = ((char *)(from))[1]; \ 59 ((char *)(to))[1] = ((char *)(from))[0]; 60 #define DECODE_LONG(from, to) \ 61 ((char *)(to))[0] = ((char *)(from))[3]; \ 62 ((char *)(to))[1] = ((char *)(from))[2]; \ 63 ((char *)(to))[2] = ((char *)(from))[1]; \ 64 ((char *)(to))[3] = ((char *)(from))[0]; 65 66 #define DECODE_FLOAT(from, to) DECODE_LONG((to), (from)) 67 68 #define DECODE_DOUBLE(from, to) \ 69 ((char *)(to))[0] = ((char *)(from))[7]; \ 70 ((char *)(to))[1] = ((char *)(from))[6]; \ 71 ((char *)(to))[2] = ((char *)(from))[5]; \ 72 ((char *)(to))[3] = ((char *)(from))[4]; \ 73 ((char *)(to))[4] = ((char *)(from))[3]; \ 74 ((char *)(to))[5] = ((char *)(from))[2]; \ 75 ((char *)(to))[6] = ((char *)(from))[1]; \ 76 ((char *)(to))[7] = ((char *)(from))[0]; 77 #endif /* little-endian */ 78 79 80 /* Most architectures are symmetrical with respect to conversions. */ 81 #if defined(mc68000) || defined(sparc) || defined(i386) || defined(__ppc) 82 #define ENCODE_SHORT(from, to) DECODE_SHORT((from), (to)) 83 #define ENCODE_LONG(from, to) DECODE_LONG((from), (to)) 84 #define ENCODE_FLOAT(from, to) DECODE_FLOAT((from), (to)) 85 #define ENCODE_DOUBLE(from, to) DECODE_DOUBLE((from), (to)) 86 87 /* Define types of specific length */ 88 typedef char i_8; 89 typedef short i_16; 90 typedef int i_32; 91 typedef unsigned char u_8; 92 typedef unsigned short u_16; 93 typedef unsigned u_32; 94 95 #endif /* Sun machines */ 96 97 #ifdef __cplusplus 98 } 99 #endif 100 101 #endif /* !_MULTIMEDIA_ARCHDEP_H */ 102