libs/gil/test/extension/toolbox/channel_type.cpp

   1 //
   2 // Copyright 2013 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 #include <boost/gil/extension/toolbox/metafunctions/channel_type.hpp>
   9 #include <boost/gil/extension/toolbox/metafunctions/is_bit_aligned.hpp>
  10
  11 #include <boost/gil/channel.hpp>
  12 #include <boost/gil/detail/is_channel_integral.hpp>
  13
  14 #include <boost/test/unit_test.hpp>
  15
  16 #include <type_traits>
  17
  18 namespace bg = boost::gil;
  19
  20 BOOST_AUTO_TEST_SUITE(toolbox_tests)
  21
  22 BOOST_AUTO_TEST_CASE(channel_type_test)
  23 {
  24     static_assert(std::is_same
  25         <
  26             unsigned char,
  27             bg::channel_type<bg::rgb8_pixel_t>::type
  28         >::value, "");
  29
  30     // float32_t is a scoped_channel_value object
  31     static_assert(std::is_same
  32         <
  33             bg::float32_t,
  34             bg::channel_type<bg::rgba32f_pixel_t>::type
  35         >::value, "");
  36
  37     // channel_type for bit_aligned images doesn't work with standard gil.
  38     using image_t = bg::bit_aligned_image4_type<4, 4, 4, 4, bg::rgb_layout_t>::type;
  39     using channel_t = bg::channel_type<image_t::view_t::reference>::type;
  40     static_assert(bg::detail::is_channel_integral<channel_t>::value, "");
  41 }
  42
  43 BOOST_AUTO_TEST_SUITE_END()