liuxiaolong
2021-07-20 58d904a328c0d849769b483e901a0be9426b8209
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//
// Copyright 2008 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_IO_RAW_DETAIL_SUPPORTED_TYPES_HPP
#define BOOST_GIL_EXTENSION_IO_RAW_DETAIL_SUPPORTED_TYPES_HPP
 
#include <boost/gil/extension/io/raw/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 raw_read_support : read_support_false {};
 
template<>
struct raw_read_support<uint8_t
                       , gray_t
                       > : read_support_true {};
 
template<>
struct raw_read_support<uint16_t
                       , gray_t
                       > : read_support_true {};
 
template<>
struct raw_read_support<uint8_t
                       , rgb_t
                       > : read_support_true {};
 
template<>
struct raw_read_support<uint16_t
                       , rgb_t
                       > : read_support_true {};
 
// Write support
 
struct raw_write_support : write_support_false {};
 
} // namespace detail
 
template<typename Pixel>
struct is_read_supported<Pixel,raw_tag>
    : std::integral_constant
        <
            bool,
            detail::raw_read_support
            <
                typename channel_type<Pixel>::type,
                typename color_space_type<Pixel>::type
            >::is_supported
        >
{};
 
template<typename Pixel>
struct is_write_supported<Pixel, raw_tag>
    : std::integral_constant<bool, detail::raw_write_support::is_supported>
{};
 
}} // namespace boost::gil
 
#endif