git.mutantstargoat.com Git - raydungeon/blob - libs/imago/src/byteord.h

   1 /*
   2 libimago - a multi-format image file input/output library.
   3 Copyright (C) 2010-2017 John Tsiombikas <nuclear@member.fsf.org>
   4
   5 This program is free software: you can redistribute it and/or modify
   6 it under the terms of the GNU Lesser General Public License as published
   7 by the Free Software Foundation, either version 3 of the License, or
   8 (at your option) any later version.
   9
  10 This program is distributed in the hope that it will be useful,
  11 but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 GNU Lesser General Public License for more details.
  14
  15 You should have received a copy of the GNU Lesser General Public License
  16 along with this program.  If not, see <http://www.gnu.org/licenses/>.
  17 */
  18 #ifndef IMAGO_BYTEORD_H_
  19 #define IMAGO_BYTEORD_H_
  20
  21 #if (defined(__STDC_VERSION__) && __STDC_VERSION__ >= 199900) || \
  22         (defined(_MSC_VER) && _MSC_VER >= 1600) || \
  23         (defined(__WATCOMC__) && __WATCOMC__ >= 1200)
  24 #include <stdint.h>
  25 #else
  26 #include <sys/types.h>
  27 #endif
  28
  29 #if defined(__DOS__) && defined(__WATCOMC__) && __WATCOMC__ < 1200
  30 typedef signed char int8_t;
  31 typedef unsigned char uint8_t;
  32 typedef short int16_t;
  33 typedef unsigned short uint16_t;
  34 typedef long int32_t;
  35 typedef unsigned long uint32_t;
  36 typedef long intptr_t;
  37 typedef unsigned long uintptr_t;
  38 #endif
  39
  40 #if defined(_MSC_VER) && (_MSC_VER < 1600)
  41 typedef signed __int8 int8_t;
  42 typedef unsigned __int8 uint8_t;
  43 typedef __int16 int16_t;
  44 typedef unsigned __int16 uint16_t;
  45 typedef __int32 int32_t;
  46 typedef unsigned __int32 uint32_t;
  47 typedef long intptr_t;
  48 typedef unsigned long uintptr_t;
  49 #endif
  50
  51 #include "imago2.h"
  52
  53 #if  defined(__i386__) || defined(__ia64__) || defined(WIN32) || \
  54     (defined(__alpha__) || defined(__alpha)) || \
  55      defined(__arm__) || \
  56     (defined(__mips__) && defined(__MIPSEL__)) || \
  57      defined(__SYMBIAN32__) || \
  58      defined(__x86_64__) || \
  59      defined(__LITTLE_ENDIAN__)
  60 /* little endian */
  61 #define IMAGO_LITTLE_ENDIAN
  62
  63 #define img_read_int16_le(f)            img_read_int16(f)
  64 #define img_write_int16_le(f, v)        img_write_int16(f, v)
  65 #define img_read_int16_be(f)            img_read_int16_inv(f)
  66 #define img_write_int16_be(f, v)        img_write_int16_inv(f, v)
  67 #define img_read_uint16_le(f)           img_read_uint16(f)
  68 #define img_write_uint16_le(f, v)       img_write_uint16(f, v)
  69 #define img_read_uint16_be(f)           img_read_uint16_inv(f)
  70 #define img_write_uint16_be(f, v)       img_write_uint16_inv(f, v)
  71
  72 #define img_read_uint32_be(f)           img_read_uint32_inv(f)
  73 #else
  74 /* big endian */
  75 #define IMAGO_BIG_ENDIAN
  76
  77 #define img_read_int16_le(f)            img_read_int16_inv(f)
  78 #define img_write_int16_le(f, v)        img_write_int16_inv(f, v)
  79 #define img_read_int16_be(f)            img_read_int16(f)
  80 #define img_write_int16_be(f, v)        img_write_int16(f, v)
  81 #define img_read_uint16_le(f)           img_read_uint16_inv(f)
  82 #define img_write_uint16_le(f, v)       img_write_uint16_inv(f, v)
  83 #define img_read_uint16_be(f)           img_read_uint16(f)
  84 #define img_write_uint16_be(f, v)       img_write_uint16(f, v)
  85
  86 #define img_read_uint32_be(f)           img_read_uint32(f)
  87 #endif  /* endian check */
  88
  89 int16_t img_read_int16(struct img_io *io);
  90 int16_t img_read_int16_inv(struct img_io *io);
  91 uint16_t img_read_uint16(struct img_io *io);
  92 uint16_t img_read_uint16_inv(struct img_io *io);
  93
  94 void img_write_int16(struct img_io *io, int16_t val);
  95 void img_write_int16_inv(struct img_io *io, int16_t val);
  96 void img_write_uint16(struct img_io *io, uint16_t val);
  97 void img_write_uint16_inv(struct img_io *io, uint16_t val);
  98
  99 uint32_t img_read_uint32(struct img_io *io);
 100 uint32_t img_read_uint32_inv(struct img_io *io);
 101
 102
 103 #endif  /* IMAGO_BYTEORD_H_ */