ceph/src/boost/boost/gil/extension/io/raw/detail/supported_types.hpp

   1 //
   2 // Copyright 2008 Christian Henning
   3 //
   4 // Distributed under the Boost Software License, Version 1.0
   5 // See accompanying file LICENSE_1_0.txt or copy at
   6 // http://www.boost.org/LICENSE_1_0.txt
   7 //
   8 #ifndef BOOST_GIL_EXTENSION_IO_RAW_DETAIL_SUPPORTED_TYPES_HPP
   9 #define BOOST_GIL_EXTENSION_IO_RAW_DETAIL_SUPPORTED_TYPES_HPP
  10
  11 #include <boost/gil/extension/io/raw/tags.hpp>
  12
  13 #include <boost/gil/channel.hpp>
  14 #include <boost/gil/color_base.hpp>
  15 #include <boost/gil/io/base.hpp>
  16
  17 #include <type_traits>
  18
  19 namespace boost { namespace gil { namespace detail {
  20
  21 // Read support
  22
  23 template< typename Channel
  24         , typename ColorSpace
  25         >
  26 struct raw_read_support : read_support_false {};
  27
  28 template<>
  29 struct raw_read_support<uint8_t
  30                        , gray_t
  31                        > : read_support_true {};
  32
  33 template<>
  34 struct raw_read_support<uint16_t
  35                        , gray_t
  36                        > : read_support_true {};
  37
  38 template<>
  39 struct raw_read_support<uint8_t
  40                        , rgb_t
  41                        > : read_support_true {};
  42
  43 template<>
  44 struct raw_read_support<uint16_t
  45                        , rgb_t
  46                        > : read_support_true {};
  47
  48 // Write support
  49
  50 struct raw_write_support : write_support_false {};
  51
  52 } // namespace detail
  53
  54 template<typename Pixel>
  55 struct is_read_supported<Pixel,raw_tag>
  56     : std::integral_constant
  57         <
  58             bool,
  59             detail::raw_read_support
  60             <
  61                 typename channel_type<Pixel>::type,
  62                 typename color_space_type<Pixel>::type
  63             >::is_supported
  64         >
  65 {};
  66
  67 template<typename Pixel>
  68 struct is_write_supported<Pixel, raw_tag>
  69     : std::integral_constant<bool, detail::raw_write_support::is_supported>
  70 {};
  71
  72 }} // namespace boost::gil
  73
  74 #endif