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boost/gil/extension/toolbox/metafunctions/get_pixel_type.hpp

//
// Copyright 2012 Christian Henning, Andreas Pokorny, Lubomir Bourdev
//
// 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_METAFUNCTIONS_GET_PIXEL_TYPE_HPP
#define BOOST_GIL_EXTENSION_TOOLBOX_METAFUNCTIONS_GET_PIXEL_TYPE_HPP

#include <boost/gil/extension/toolbox/dynamic_images.hpp>
#include <boost/gil/extension/toolbox/metafunctions/is_bit_aligned.hpp>

namespace boost{ namespace gil {

/// get_pixel_type metafunction
/// \brief Depending on Image this function generates either
///        the pixel type or the reference type in case
///        the image is bit_aligned.
template< typename View >
struct get_pixel_type : mpl::if_< typename is_bit_aligned< typename View::value_type >::type
                                , typename View::reference
                                , typename View::value_type
                                > {};

template< typename ImageViewTypes >
struct get_pixel_type< any_image_view< ImageViewTypes > >
{
    typedef any_image_pixel_t type;
};

} // namespace gil
} // namespace boost

#endif