git.mutantstargoat.com Git - liquidmodel/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 unsigned long uintptr_t;
  37 #endif
  38
  39 #include "imago2.h"
  40
  41 #if  defined(__i386__) || defined(__ia64__) || defined(WIN32) || \
  42     (defined(__alpha__) || defined(__alpha)) || \
  43      defined(__arm__) || \
  44     (defined(__mips__) && defined(__MIPSEL__)) || \
  45      defined(__SYMBIAN32__) || \
  46      defined(__x86_64__) || \
  47      defined(__LITTLE_ENDIAN__)
  48 /* little endian */
  49 #define IMAGO_LITTLE_ENDIAN
  50
  51 #define img_read_int16_le(f)            img_read_int16(f)
  52 #define img_write_int16_le(f, v)        img_write_int16(f, v)
  53 #define img_read_int16_be(f)            img_read_int16_inv(f)
  54 #define img_write_int16_be(f, v)        img_write_int16_inv(f, v)
  55 #define img_read_uint16_le(f)           img_read_uint16(f)
  56 #define img_write_uint16_le(f, v)       img_write_uint16(f, v)
  57 #define img_read_uint16_be(f)           img_read_uint16_inv(f)
  58 #define img_write_uint16_be(f, v)       img_write_uint16_inv(f, v)
  59
  60 #define img_read_uint32_be(f)           img_read_uint32_inv(f)
  61 #else
  62 /* big endian */
  63 #define IMAGO_BIG_ENDIAN
  64
  65 #define img_read_int16_le(f)            img_read_int16_inv(f)
  66 #define img_write_int16_le(f, v)        img_write_int16_inv(f, v)
  67 #define img_read_int16_be(f)            img_read_int16(f)
  68 #define img_write_int16_be(f, v)        img_write_int16(f, v)
  69 #define img_read_uint16_le(f)           img_read_uint16_inv(f)
  70 #define img_write_uint16_le(f, v)       img_write_uint16_inv(f, v)
  71 #define img_read_uint16_be(f)           img_read_uint16(f)
  72 #define img_write_uint16_be(f, v)       img_write_uint16(f, v)
  73
  74 #define img_read_uint32_be(f)           img_read_uint32(f)
  75 #endif  /* endian check */
  76
  77 int16_t img_read_int16(struct img_io *io);
  78 int16_t img_read_int16_inv(struct img_io *io);
  79 uint16_t img_read_uint16(struct img_io *io);
  80 uint16_t img_read_uint16_inv(struct img_io *io);
  81
  82 void img_write_int16(struct img_io *io, int16_t val);
  83 void img_write_int16_inv(struct img_io *io, int16_t val);
  84 void img_write_uint16(struct img_io *io, uint16_t val);
  85 void img_write_uint16_inv(struct img_io *io, uint16_t val);
  86
  87 uint32_t img_read_uint32(struct img_io *io);
  88 uint32_t img_read_uint32_inv(struct img_io *io);
  89
  90
  91 #endif  /* IMAGO_BYTEORD_H_ */