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

   1 #ifndef fooendianmacroshfoo
   2 #define fooendianmacroshfoo
   3
   4 /* $Id$ */
   5
   6 /***
   7   This file is part of PulseAudio.
   8
   9   Copyright 2004-2006 Lennart Poettering
  10   Copyright 2006 Pierre Ossman <ossman@cendio.se> for Cendio AB
  11
  12   PulseAudio is free software; you can redistribute it and/or modify
  13   it under the terms of the GNU Lesser General Public License as published
  14   by the Free Software Foundation; either version 2 of the License,
  15   or (at your option) any later version.
  16
  17   PulseAudio is distributed in the hope that it will be useful, but
  18   WITHOUT ANY WARRANTY; without even the implied warranty of
  19   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  20   General Public License for more details.
  21
  22   You should have received a copy of the GNU Lesser General Public License
  23   along with PulseAudio; if not, write to the Free Software
  24   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
  25   USA.
  26 ***/
  27
  28 #include <inttypes.h>
  29
  30 #ifndef PACKAGE
  31 #error "Please include config.h before including this file!"
  32 #endif
  33
  34 #define INT16_SWAP(x) ( (int16_t) ( ((uint16_t) x >> 8) | ((uint16_t) x << 8) ) )
  35 #define UINT16_SWAP(x) ( (uint16_t) ( ((uint16_t) x >> 8) | ((uint16_t) x << 8) ) )
  36 #define INT32_SWAP(x) ( (int32_t) ( ((uint32_t) x >> 24) | ((uint32_t) x << 24) | (((uint32_t) x & 0xFF00) << 8) | ((((uint32_t) x) >> 8) & 0xFF00) ) )
  37 #define UINT32_SWAP(x) ( (uint32_t) ( ((uint32_t) x >> 24) | ((uint32_t) x << 24) | (((uint32_t) x & 0xFF00) << 8) | ((((uint32_t) x) >> 8) & 0xFF00) ) )
  38
  39 #define MAYBE_INT32_SWAP(c,x) ((c) ? INT32_SWAP(x) : x)
  40 #define MAYBE_UINT32_SWAP(c,x) ((c) ? UINT32_SWAP(x) : x)
  41
  42 #ifdef WORDS_BIGENDIAN
  43  #define INT16_FROM_LE(x) INT16_SWAP(x)
  44  #define INT16_FROM_BE(x) ((int16_t)(x))
  45
  46  #define INT16_TO_LE(x) INT16_SWAP(x)
  47  #define INT16_TO_BE(x) ((int16_t)(x))
  48
  49  #define UINT16_FROM_LE(x) UINT16_SWAP(x)
  50  #define UINT16_FROM_BE(x) ((uint16_t)(x))
  51
  52  #define INT32_FROM_LE(x) INT32_SWAP(x)
  53  #define INT32_FROM_BE(x) ((int32_t)(x))
  54
  55  #define UINT32_FROM_LE(x) UINT32_SWAP(x)
  56  #define UINT32_FROM_BE(x) ((uint32_t)(x))
  57
  58  #define UINT32_TO_LE(x) UINT32_SWAP(x)
  59  #define UINT32_TO_BE(x) ((uint32_t)(x))
  60 #else
  61  #define INT16_FROM_LE(x) ((int16_t)(x))
  62  #define INT16_FROM_BE(x) INT16_SWAP(x)
  63
  64  #define INT16_TO_LE(x) ((int16_t)(x))
  65  #define INT16_TO_BE(x) INT16_SWAP(x)
  66
  67  #define UINT16_FROM_LE(x) ((uint16_t)(x))
  68  #define UINT16_FROM_BE(x) UINT16_SWAP(x)
  69
  70  #define INT32_FROM_LE(x) ((int32_t)(x))
  71  #define INT32_FROM_BE(x) INT32_SWAP(x)
  72
  73  #define UINT32_FROM_LE(x) ((uint32_t)(x))
  74  #define UINT32_FROM_BE(x) UINT32_SWAP(x)
  75
  76  #define UINT32_TO_LE(x) ((uint32_t)(x))
  77  #define UINT32_TO_BE(x) UINT32_SWAP(x)
  78 #endif
  79
  80 #endif