123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105 |
- //
- // Copyright 2010 Kenneth Riddile
- //
- // Distributed under the Boost Software License, Version 1.0
- // See accompanying file LICENSE_1_0.txt or copy at
- // http://www.boost.org/LICENSE_1_0.txt
- //
- #ifndef BOOST_GIL_EXTENSION_IO_TARGA_DETAIL_SUPPORTED_TYPES_HPP
- #define BOOST_GIL_EXTENSION_IO_TARGA_DETAIL_SUPPORTED_TYPES_HPP
- #include <boost/gil/extension/io/targa/tags.hpp>
- #include <boost/gil/channel.hpp>
- #include <boost/gil/color_base.hpp>
- #include <boost/gil/io/base.hpp>
- #include <type_traits>
- namespace boost { namespace gil { namespace detail {
- // Read support
- template< typename Channel
- , typename ColorSpace
- >
- struct targa_read_support : read_support_false
- {
- static const targa_depth::type bpp = 0;
- };
- template<>
- struct targa_read_support<uint8_t
- , rgb_t
- > : read_support_true
- {
- static const targa_depth::type bpp = 24;
- };
- template<>
- struct targa_read_support<uint8_t
- , rgba_t
- > : read_support_true
- {
- static const targa_depth::type bpp = 32;
- };
- // Write support
- template< typename Channel
- , typename ColorSpace
- >
- struct targa_write_support : write_support_false
- {};
- template<>
- struct targa_write_support<uint8_t
- , rgb_t
- > : write_support_true {};
- template<>
- struct targa_write_support<uint8_t
- , rgba_t
- > : write_support_true {};
- } // namespace detail
- template<typename Pixel>
- struct is_read_supported<Pixel, targa_tag>
- : std::integral_constant
- <
- bool,
- detail::targa_read_support
- <
- typename channel_type<Pixel>::type,
- typename color_space_type<Pixel>::type
- >::is_supported
- >
- {
- using parent_t = detail::targa_read_support
- <
- typename channel_type<Pixel>::type,
- typename color_space_type<Pixel>::type
- >;
- static const typename targa_depth::type bpp = parent_t::bpp;
- };
- template<typename Pixel>
- struct is_write_supported<Pixel, targa_tag>
- : std::integral_constant
- <
- bool,
- detail::targa_write_support
- <
- typename channel_type<Pixel>::type,
- typename color_space_type<Pixel>::type
- >::is_supported
- >
- {};
- }} // namespace boost::gil
- #endif
|