librtmp/bytes.h

   1 /*
   2  *      Copyright (C) 2005-2008 Team XBMC
   3  *      http://www.xbmc.org
   4  *      Copyright (C) 2008-2009 Andrej Stepanchuk
   5  *      Copyright (C) 2009-2010 Howard Chu
   6  *
   7  *  This file is part of librtmp.
   8  *
   9  *  librtmp is free software; you can redistribute it and/or modify
  10  *  it under the terms of the GNU Lesser General Public License as
  11  *  published by the Free Software Foundation; either version 2.1,
  12  *  or (at your option) any later version.
  13  *
  14  *  librtmp is distributed in the hope that it will be useful,
  15  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  17  *  GNU General Public License for more details.
  18  *
  19  *  You should have received a copy of the GNU Lesser General Public License
  20  *  along with librtmp see the file COPYING.  If not, write to
  21  *  the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  22  *  Boston, MA  02110-1301, USA.
  23  *  http://www.gnu.org/copyleft/lgpl.html
  24  */
  25
  26 #ifndef __BYTES_H__
  27 #define __BYTES_H__
  28
  29 #include <stdint.h>
  30
  31 #ifdef _WIN32
  32 /* Windows is little endian only */
  33 #define __LITTLE_ENDIAN 1234
  34 #define __BIG_ENDIAN    4321
  35 #define __BYTE_ORDER __LITTLE_ENDIAN
  36 #define __FLOAT_WORD_ORDER __BYTE_ORDER
  37
  38 typedef unsigned char uint8_t;
  39
  40 #else /* !_WIN32 */
  41
  42 #include <sys/param.h>
  43
  44 #if defined(BYTE_ORDER) && !defined(__BYTE_ORDER)
  45 #define __BYTE_ORDER    BYTE_ORDER
  46 #endif
  47
  48 #if defined(BIG_ENDIAN) && !defined(__BIG_ENDIAN)
  49 #define __BIG_ENDIAN    BIG_ENDIAN
  50 #endif
  51
  52 #if defined(LITTLE_ENDIAN) && !defined(__LITTLE_ENDIAN)
  53 #define __LITTLE_ENDIAN LITTLE_ENDIAN
  54 #endif
  55
  56 #endif /* !_WIN32 */
  57
  58 /* define default endianness */
  59 #ifndef __LITTLE_ENDIAN
  60 #define __LITTLE_ENDIAN 1234
  61 #endif
  62
  63 #ifndef __BIG_ENDIAN
  64 #define __BIG_ENDIAN    4321
  65 #endif
  66
  67 #ifndef __BYTE_ORDER
  68 #warning "Byte order not defined on your system, assuming little endian!"
  69 #define __BYTE_ORDER    __LITTLE_ENDIAN
  70 #endif
  71
  72 /* ok, we assume to have the same float word order and byte order if float word order is not defined */
  73 #ifndef __FLOAT_WORD_ORDER
  74 #warning "Float word order not defined, assuming the same as byte order!"
  75 #define __FLOAT_WORD_ORDER      __BYTE_ORDER
  76 #endif
  77
  78 #if !defined(__BYTE_ORDER) || !defined(__FLOAT_WORD_ORDER)
  79 #error "Undefined byte or float word order!"
  80 #endif
  81
  82 #if __FLOAT_WORD_ORDER != __BIG_ENDIAN && __FLOAT_WORD_ORDER != __LITTLE_ENDIAN
  83 #error "Unknown/unsupported float word order!"
  84 #endif
  85
  86 #if __BYTE_ORDER != __BIG_ENDIAN && __BYTE_ORDER != __LITTLE_ENDIAN
  87 #error "Unknown/unsupported byte order!"
  88 #endif
  89
  90 #endif
  91