mpeg_encode/src/byteorder.h

/*===========================================================================*
 * byteorder.h                                                               *
 *                                                                           *
 *      stuff to handle different byte order                                 *
 *                                                                           *
 *===========================================================================*/

/*
 * Copyright (c) 1995 The Regents of the University of California.
 * All rights reserved.
 *
 * Permission to use, copy, modify, and distribute this software and its
 * documentation for any purpose, without fee, and without written agreement is
 * hereby granted, provided that the above copyright notice and the following
 * two paragraphs appear in all copies of this software.
 *
 * IN NO EVENT SHALL THE UNIVERSITY OF CALIFORNIA BE LIABLE TO ANY PARTY FOR
 * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT
 * OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF THE UNIVERSITY OF
 * CALIFORNIA HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * THE UNIVERSITY OF CALIFORNIA SPECIFICALLY DISCLAIMS ANY WARRANTIES,
 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
 * AND FITNESS FOR A PARTICULAR PURPOSE.  THE SOFTWARE PROVIDED HEREUNDER IS
 * ON AN "AS IS" BASIS, AND THE UNIVERSITY OF CALIFORNIA HAS NO OBLIGATION TO
 * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
 */

/*  
 *  $Header: /u/smoot/md/mpeg_encode/headers/RCS/byteorder.h,v 1.3 1995/01/19 23:54:39 eyhung Exp $
 *  $Log: byteorder.h,v $
 * Revision 1.3  1995/01/19  23:54:39  eyhung
 * Changed copyrights
 *
 * Revision 1.3  1995/01/19  23:54:39  eyhung
 * Changed copyrights
 *
 * Revision 1.2  1994/11/12  02:12:15  keving
 * nothing
 *
 * Revision 1.1  1993/07/22  22:24:23  keving
 * nothing
 *
 */


#include "general.h"

#ifdef WIN32
#define FORCE_LITTLE_ENDIAN
#endif

#ifdef FORCE_BIG_ENDIAN
    /* leave byte order as it is */
#define htonl(x) (x)
#define ntohl(x) (x)
#define htons(x) (x)
#define ntohs(x) (x)
#else
#ifdef FORCE_LITTLE_ENDIAN
    /* need to reverse byte order */
    /* note -- we assume here that htonl is called on a variable, not a
     * constant; thus, this is not for general use, but works with bitio.c
     */
#define htonl(x)    \
    ((((unsigned char *)(&x))[0] << 24) |       \
     (((unsigned char *)(&x))[1] << 16) |       \
     (((unsigned char *)(&x))[2] << 8) |        \
     (((unsigned char *)(&x))[3]))
#define ntohl(x)    htonl(x)
#define htons(x)    \
    ((((unsigned char *)(&x))[0] << 8) |        \
     ((unsigned char *)(&x))[1])
#define ntohs(x)    htons(x)
#else
    /* let in.h handle it, if possible */                  
#include <sys/types.h>
#include <netinet/in.h>
#endif /* FORCE_LITTLE_ENDIAN */
#endif /* FORCE_BIG_ENDIAN */
Revision:	23
Committed:	Mon Jul 7 23:06:52 2008 UTC (12 years, 6 months ago) by wdelano
File size:	2695 byte(s)
Log Message:	changes for win32
Line	User	Rev	File contents
1	wdelano	22	/===========================================================================
2			* byteorder.h *
3			* *
4			* stuff to handle different byte order *
5			* *
6			===========================================================================/
7
8			/*
9			* Copyright (c) 1995 The Regents of the University of California.
10			* All rights reserved.
11			*
12			* Permission to use, copy, modify, and distribute this software and its
13			* documentation for any purpose, without fee, and without written agreement is
14			* hereby granted, provided that the above copyright notice and the following
15			* two paragraphs appear in all copies of this software.
16			*
17			* IN NO EVENT SHALL THE UNIVERSITY OF CALIFORNIA BE LIABLE TO ANY PARTY FOR
18			* DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT
19			* OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF THE UNIVERSITY OF
20			* CALIFORNIA HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
21			*
22			* THE UNIVERSITY OF CALIFORNIA SPECIFICALLY DISCLAIMS ANY WARRANTIES,
23			* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
24			* AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
25			* ON AN "AS IS" BASIS, AND THE UNIVERSITY OF CALIFORNIA HAS NO OBLIGATION TO
26			* PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
27			*/
28
29			/*
30			* $Header: /u/smoot/md/mpeg_encode/headers/RCS/byteorder.h,v 1.3 1995/01/19 23:54:39 eyhung Exp $
31			* $Log: byteorder.h,v $
32			* Revision 1.3 1995/01/19 23:54:39 eyhung
33			* Changed copyrights
34			*
35			* Revision 1.3 1995/01/19 23:54:39 eyhung
36			* Changed copyrights
37			*
38			* Revision 1.2 1994/11/12 02:12:15 keving
39			* nothing
40			*
41			* Revision 1.1 1993/07/22 22:24:23 keving
42			* nothing
43			*
44			*/
45
46
47			#include "general.h"
48
49	wdelano	23	#ifdef WIN32
50			#define FORCE_LITTLE_ENDIAN
51			#endif
52	wdelano	22
53			#ifdef FORCE_BIG_ENDIAN
54			/* leave byte order as it is */
55			#define htonl(x) (x)
56			#define ntohl(x) (x)
57			#define htons(x) (x)
58			#define ntohs(x) (x)
59			#else
60			#ifdef FORCE_LITTLE_ENDIAN
61			/* need to reverse byte order */
62			/* note -- we assume here that htonl is called on a variable, not a
63			* constant; thus, this is not for general use, but works with bitio.c
64			*/
65			#define htonl(x) \
66			((((unsigned char *)(&x))[0] << 24) \| \
67			(((unsigned char *)(&x))[1] << 16) \| \
68			(((unsigned char *)(&x))[2] << 8) \| \
69			(((unsigned char *)(&x))[3]))
70			#define ntohl(x) htonl(x)
71			#define htons(x) \
72			((((unsigned char *)(&x))[0] << 8) \| \
73			((unsigned char *)(&x))[1])
74			#define ntohs(x) htons(x)
75			#else
76			/* let in.h handle it, if possible */
77			#include <sys/types.h>
78			#include <netinet/in.h>
79			#endif /* FORCE_LITTLE_ENDIAN */
80			#endif /* FORCE_BIG_ENDIAN */