gfx/2d/BigEndianInts.h

   1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
   3 /* This Source Code Form is subject to the terms of the Mozilla Public
   4  * License, v. 2.0. If a copy of the MPL was not distributed with this
   5  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   6
   7 #ifndef mozilla_BigEndianInts_h
   8 #define mozilla_BigEndianInts_h
   9
  10 #include "mozilla/EndianUtils.h"
  11
  12 namespace mozilla {
  13
  14 #pragma pack(push, 1)
  15
  16 struct BigEndianUint16 {
  17 #ifdef __SUNPRO_CC
  18   BigEndianUint16& operator=(const uint16_t aValue) {
  19     value = NativeEndian::swapToBigEndian(aValue);
  20     return *this;
  21   }
  22 #else
  23   MOZ_IMPLICIT BigEndianUint16(const uint16_t aValue) {
  24     value = NativeEndian::swapToBigEndian(aValue);
  25   }
  26 #endif
  27
  28   operator uint16_t() const { return NativeEndian::swapFromBigEndian(value); }
  29
  30   friend inline bool operator==(const BigEndianUint16& lhs,
  31                                 const BigEndianUint16& rhs) {
  32     return lhs.value == rhs.value;
  33   }
  34
  35   friend inline bool operator!=(const BigEndianUint16& lhs,
  36                                 const BigEndianUint16& rhs) {
  37     return !(lhs == rhs);
  38   }
  39
  40  private:
  41   uint16_t value;
  42 };
  43
  44 struct BigEndianUint32 {
  45 #ifdef __SUNPRO_CC
  46   BigEndianUint32& operator=(const uint32_t aValue) {
  47     value = NativeEndian::swapToBigEndian(aValue);
  48     return *this;
  49   }
  50 #else
  51   MOZ_IMPLICIT BigEndianUint32(const uint32_t aValue) {
  52     value = NativeEndian::swapToBigEndian(aValue);
  53   }
  54 #endif
  55
  56   operator uint32_t() const { return NativeEndian::swapFromBigEndian(value); }
  57
  58  private:
  59   uint32_t value;
  60 };
  61
  62 #pragma pack(pop)
  63
  64 }  // namespace mozilla
  65
  66 #endif  // mozilla_BigEndianInts_h