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Diffstat (limited to 'boost/gil/extension/io/pnm/detail/supported_types.hpp')
| -rw-r--r-- | boost/gil/extension/io/pnm/detail/supported_types.hpp | 146 |
1 files changed, 146 insertions, 0 deletions
diff --git a/boost/gil/extension/io/pnm/detail/supported_types.hpp b/boost/gil/extension/io/pnm/detail/supported_types.hpp new file mode 100644 index 0000000000..7bede91402 --- /dev/null +++ b/boost/gil/extension/io/pnm/detail/supported_types.hpp @@ -0,0 +1,146 @@ +/* + Copyright 2008 Christian Henning + Use, modification and distribution are subject to 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_PNM_DETAIL_SUPPORTED_TYPES_HPP +#define BOOST_GIL_EXTENSION_IO_PNM_DETAIL_SUPPORTED_TYPES_HPP + +//////////////////////////////////////////////////////////////////////////////////////// +/// \file +/// \brief +/// \author Christian Henning \n +/// +/// \date 2008 \n +/// +//////////////////////////////////////////////////////////////////////////////////////// + +#include <boost/mpl/not.hpp> +#include <boost/type_traits/is_same.hpp> + +#include <boost/gil/channel.hpp> +#include <boost/gil/color_base.hpp> + +namespace boost { namespace gil { namespace detail { + +// Read Support + +template< pnm_image_type::type ASCII_Type + , pnm_image_type::type Binary_Type + > +struct pnm_rw_support_base +{ + static const pnm_image_type::type _asc_type = ASCII_Type; + static const pnm_image_type::type _bin_type = Binary_Type; +}; + +template< typename Channel + , typename ColorSpace + > +struct pnm_read_support : read_support_false + , pnm_rw_support_base< 0 + , 0 + > {}; + +template< typename BitField, bool Mutable > +struct pnm_read_support< packed_dynamic_channel_reference< BitField + , 1 + , Mutable + > + , gray_t + > : read_support_true + , pnm_rw_support_base< pnm_image_type::mono_asc_t::value + , pnm_image_type::mono_bin_t::value + > {}; + +template<> +struct pnm_read_support<uint8_t + , gray_t + > : read_support_true + , pnm_rw_support_base< pnm_image_type::gray_asc_t::value + , pnm_image_type::gray_bin_t::value + > {}; + + +template<> +struct pnm_read_support<uint8_t + , rgb_t + > : read_support_true + , pnm_rw_support_base< pnm_image_type::color_asc_t::value + , pnm_image_type::color_bin_t::value + > {}; + +// Write support + +template< typename Channel + , typename ColorSpace + > +struct pnm_write_support : write_support_false +{}; + +template< typename BitField, bool Mutable > +struct pnm_write_support< packed_dynamic_channel_reference< BitField + , 1 + , Mutable + > + , gray_t + > : write_support_true + , pnm_rw_support_base< pnm_image_type::mono_asc_t::value + , pnm_image_type::mono_bin_t::value + > {}; + + +template<> +struct pnm_write_support<uint8_t + , gray_t + > : write_support_true + , pnm_rw_support_base< pnm_image_type::gray_asc_t::value + , pnm_image_type::gray_bin_t::value + > {}; + + +template<> +struct pnm_write_support<uint8_t + , rgb_t + > : write_support_true + , pnm_rw_support_base< pnm_image_type::color_asc_t::value + , pnm_image_type::color_bin_t::value + > {}; + +} // namespace detail + +template< typename Pixel > +struct is_read_supported< Pixel + , pnm_tag + > + : mpl::bool_< detail::pnm_read_support< typename channel_type < Pixel >::type + , typename color_space_type< Pixel >::type + >::is_supported + > +{ + typedef detail::pnm_read_support< typename channel_type < Pixel >::type + , typename color_space_type< Pixel >::type + > parent_t; + + static const pnm_image_type::type _asc_type = parent_t::_asc_type; + static const pnm_image_type::type _bin_type = parent_t::_bin_type; +}; + +template< typename Pixel > +struct is_write_supported< Pixel + , pnm_tag + > + : mpl::bool_< detail::pnm_write_support< typename channel_type < Pixel >::type + , typename color_space_type< Pixel >::type + >::is_supported + > {}; + +} // namespace gil +} // namespace boost + + +#endif |