code.delx.au - pulseaudio/blob - src/polypcore/endianmacros.h

   1 #ifndef fooendianmacroshfoo
   2 #define fooendianmacroshfoo
   3
   4 /* $Id$ */
   5
   6 /***
   7   This file is part of polypaudio.
   8
   9   polypaudio is free software; you can redistribute it and/or modify
  10   it under the terms of the GNU Lesser General Public License as published
  11   by the Free Software Foundation; either version 2 of the License,
  12   or (at your option) any later version.
  13
  14   polypaudio is distributed in the hope that it will be useful, but
  15   WITHOUT ANY WARRANTY; without even the implied warranty of
  16   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  17   General Public License for more details.
  18
  19   You should have received a copy of the GNU Lesser General Public License
  20   along with polypaudio; if not, write to the Free Software
  21   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
  22   USA.
  23 ***/
  24
  25 #include <inttypes.h>
  26
  27 #ifdef HAVE_CONFIG_H
  28 #include <config.h>
  29 #endif
  30
  31 #define INT16_SWAP(x) ( (int16_t) ( ((uint16_t) x >> 8) | ((uint16_t) x << 8) ) )
  32 #define UINT16_SWAP(x) ( (uint16_t) ( ((uint16_t) x >> 8) | ((uint16_t) x << 8) ) )
  33 #define INT32_SWAP(x) ( (int32_t) ( ((uint32_t) x >> 24) | ((uint32_t) x << 24) | (((uint32_t) x & 0xFF00) << 8) | ((((uint32_t) x) >> 8) & 0xFF00) ) )
  34 #define UINT32_SWAP(x) ( (uint32_t) ( ((uint32_t) x >> 24) | ((uint32_t) x << 24) | (((uint32_t) x & 0xFF00) << 8) | ((((uint32_t) x) >> 8) & 0xFF00) ) )
  35
  36 #define MAYBE_INT32_SWAP(c,x) ((c) ? INT32_SWAP(x) : x)
  37 #define MAYBE_UINT32_SWAP(c,x) ((c) ? UINT32_SWAP(x) : x)
  38
  39 #ifdef WORDS_BIGENDIAN
  40  #define INT16_FROM_LE(x) INT16_SWAP(x)
  41  #define INT16_FROM_BE(x) ((int16_t)(x))
  42
  43  #define INT16_TO_LE(x) INT16_SWAP(x)
  44  #define INT16_TO_BE(x) ((int16_t)(x))
  45
  46  #define UINT16_FROM_LE(x) UINT16_SWAP(x)
  47  #define UINT16_FROM_BE(x) ((uint16_t)(x))
  48
  49  #define INT32_FROM_LE(x) INT32_SWAP(x)
  50  #define INT32_FROM_BE(x) ((int32_t)(x))
  51
  52  #define UINT32_FROM_LE(x) UINT32_SWAP(x)
  53  #define UINT32_FROM_BE(x) ((uint32_t)(x))
  54
  55  #define UINT32_TO_LE(x) UINT32_SWAP(x)
  56  #define UINT32_TO_BE(x) ((uint32_t)(x))
  57 #else
  58  #define INT16_FROM_LE(x) ((int16_t)(x))
  59  #define INT16_FROM_BE(x) INT16_SWAP(x)
  60
  61  #define INT16_TO_LE(x) ((int16_t)(x))
  62  #define INT16_TO_BE(x) INT16_SWAP(x)
  63
  64  #define UINT16_FROM_LE(x) ((uint16_t)(x))
  65  #define UINT16_FROM_BE(x) UINT16_SWAP(x)
  66
  67  #define INT32_FROM_LE(x) ((int32_t)(x))
  68  #define INT32_FROM_BE(x) INT32_SWAP(x)
  69
  70  #define UINT32_FROM_LE(x) ((uint32_t)(x))
  71  #define UINT32_FROM_BE(x) UINT32_SWAP(x)
  72
  73  #define UINT32_TO_LE(x) ((uint32_t)(x))
  74  #define UINT32_TO_BE(x) UINT32_SWAP(x)
  75 #endif
  76
  77 #endif