FM / metafunctions

/usr/include/boost/gil/extension/toolbox/metafunctions/

/usr/include/boost/gil/extension/toolbox/metafunctions

Name	Size	Mode	Actions
channel_type.hpp	3419	0644	edit dl rm
channel_view.hpp	1578	0644	edit dl rm
get_num_bits.hpp	1865	0644	edit dl rm
get_pixel_type.hpp	1146	0644	edit dl rm
is_bit_aligned.hpp	1214	0644	edit dl rm
is_homogeneous.hpp	2839	0644	edit dl rm
is_similar.hpp	910	0644	edit dl rm
pixel_bit_size.hpp	1756	0644	edit dl rm

Edit: /usr/include/boost/gil/extension/toolbox/metafunctions/channel_view.hpp (1578B)

#include <boost/gil/image_view_factory.hpp>

namespace boost {
namespace gil {

template <typename Channel, typename View>
struct channel_type_to_index
{
    static constexpr int value = detail::type_to_index
        <
            typename color_space_type<View>::type, // color (Boost.MP11-compatible list)
            Channel                                // channel type
        >::value;                                  // index of the channel in the color (Boost.MP11-compatible list)
};

template<typename Channel, typename View>
struct channel_view_type : kth_channel_view_type
    <
        channel_type_to_index<Channel, View>::value,
        View
    >
{
    static constexpr int index = channel_type_to_index
        <
            Channel,
            View
        >::value;

using parent_t = kth_channel_view_type<index, View>;
    using type = typename parent_t::type;

static type make( const View& src )
    {
        return parent_t::make( src );
    }
};

/// \ingroup ImageViewTransformationsKthChannel
template<typename Channel, typename View>
auto channel_view(View const& src)
    -> typename channel_view_type<Channel, View>::type
{
   return channel_view_type<Channel, View>::make(src);
}

}} // namespace boost::gil

#endif

// // Copyright 2010 Fabien Castan, Christian Henning // // 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_TOOLBOX_CHANNEL_VIEW_HPP #define BOOST_GIL_EXTENSION_TOOLBOX_CHANNEL_VIEW_HPP #include namespace boost { namespace gil { template struct channel_type_to_index { static constexpr int value = detail::type_to_index < typename color_space_type::type, // color (Boost.MP11-compatible list) Channel // channel type >::value; // index of the channel in the color (Boost.MP11-compatible list) }; template struct channel_view_type : kth_channel_view_type < channel_type_to_index::value, View > { static constexpr int index = channel_type_to_index < Channel, View >::value; using parent_t = kth_channel_view_type; using type = typename parent_t::type; static type make( const View& src ) { return parent_t::make( src ); } }; /// \ingroup ImageViewTransformationsKthChannel template auto channel_view(View const& src) -> typename channel_view_type::type { return channel_view_type::make(src); } }} // namespace boost::gil #endif