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/*
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_BMP_DETAIL_SUPPORTED_TYPES_HPP
#define BOOST_GIL_EXTENSION_IO_BMP_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>
#include <boost/gil/bit_aligned_pixel_reference.hpp>
#include <boost/gil/packed_pixel.hpp>
#include <boost/gil/io/base.hpp>
namespace boost { namespace gil { namespace detail {
// Read support
template< typename Channel
, typename ColorSpace
>
struct bmp_read_support : read_support_false
{
static const bmp_bits_per_pixel::type bpp = 0;
};
template< typename BitField
, bool Mutable
>
struct bmp_read_support< packed_dynamic_channel_reference< BitField
, 1
, Mutable
>
, gray_t
> : read_support_true
{
static const bmp_bits_per_pixel::type bpp = 1;
};
template< typename BitField
, bool Mutable
>
struct bmp_read_support< packed_dynamic_channel_reference< BitField
, 4
, Mutable
>
, gray_t
> : read_support_true
{
static const bmp_bits_per_pixel::type bpp = 4;
};
template<>
struct bmp_read_support<uint8_t
, gray_t
> : read_support_true
{
static const bmp_bits_per_pixel::type bpp = 8;
};
template<>
struct bmp_read_support<uint8_t
, rgb_t
> : read_support_true
{
static const bmp_bits_per_pixel::type bpp = 24;
};
template<>
struct bmp_read_support<uint8_t
, rgba_t
> : read_support_true
{
static const bmp_bits_per_pixel::type bpp = 32;
};
// Write support
template< typename Channel
, typename ColorSpace
>
struct bmp_write_support : write_support_false
{};
template<>
struct bmp_write_support<uint8_t
, rgb_t
> : write_support_true {};
template<>
struct bmp_write_support<uint8_t
, rgba_t
> : write_support_true {};
} // namespace detail
template< typename Pixel >
struct is_read_supported< Pixel
, bmp_tag
>
: mpl::bool_< detail::bmp_read_support< typename channel_type< Pixel >::type
, typename color_space_type< Pixel >::type
>::is_supported
>
{
typedef detail::bmp_read_support< typename channel_type< Pixel >::type
, typename color_space_type< Pixel >::type
> parent_t;
static const typename bmp_bits_per_pixel::type bpp = parent_t::bpp;
};
template< typename Pixel >
struct is_write_supported< Pixel
, bmp_tag
>
: mpl::bool_< detail::bmp_write_support< typename channel_type< Pixel >::type
, typename color_space_type< Pixel >::type
>::is_supported
> {};
} // namespace gil
} // namespace boost
#endif
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