FM / color_spaces

/usr/include/boost/gil/extension/toolbox/color_spaces/

/usr/include/boost/gil/extension/toolbox/color_spaces

Name	Size	Mode	Actions
cmyka.hpp	2885	0644	edit dl rm
gray_alpha.hpp	3617	0644	edit dl rm
hsl.hpp	6494	0644	edit dl rm
hsv.hpp	5679	0644	edit dl rm
lab.hpp	4785	0644	edit dl rm
xyz.hpp	4305	0644	edit dl rm
ycbcr.hpp	8707	0644	edit dl rm

Edit: /usr/include/boost/gil/extension/toolbox/color_spaces/gray_alpha.hpp (3617B)

//
// Copyright 2012 Andreas Pokorny
//
// 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_COLOR_SPACES_GRAY_ALPHA_HPP
#define BOOST_GIL_EXTENSION_TOOLBOX_COLOR_SPACES_GRAY_ALPHA_HPP

#include <boost/gil/color_convert.hpp>
#include <boost/gil/gray.hpp>
#include <boost/gil/typedefs.hpp>

#include <boost/gil/detail/mp11.hpp>

namespace boost{ namespace gil {

using gray_alpha_t = mp11::mp_list<gray_color_t,alpha_t>;

using gray_alpha_layout_t = layout<gray_alpha_t>;
using alpha_gray_layout_t = layout<gray_alpha_layout_t, mp11::mp_list_c<int,1,0>>;

BOOST_GIL_DEFINE_BASE_TYPEDEFS(8, uint8_t, alpha_gray)
BOOST_GIL_DEFINE_BASE_TYPEDEFS(8s, int8_t, alpha_gray)
BOOST_GIL_DEFINE_BASE_TYPEDEFS(16, uint16_t, alpha_gray)
BOOST_GIL_DEFINE_BASE_TYPEDEFS(16s, int16_t, alpha_gray)
BOOST_GIL_DEFINE_BASE_TYPEDEFS(32, uint32_t, alpha_gray)
BOOST_GIL_DEFINE_BASE_TYPEDEFS(32s, int32_t, alpha_gray)
BOOST_GIL_DEFINE_BASE_TYPEDEFS(32f, float32_t, alpha_gray)

BOOST_GIL_DEFINE_ALL_TYPEDEFS(8, uint8_t, gray_alpha)
BOOST_GIL_DEFINE_ALL_TYPEDEFS(8s, int8_t, gray_alpha)
BOOST_GIL_DEFINE_ALL_TYPEDEFS(16, uint16_t, gray_alpha)
BOOST_GIL_DEFINE_ALL_TYPEDEFS(16s, int16_t, gray_alpha)
BOOST_GIL_DEFINE_ALL_TYPEDEFS(32, uint32_t, gray_alpha)
BOOST_GIL_DEFINE_ALL_TYPEDEFS(32s, int32_t, gray_alpha)
BOOST_GIL_DEFINE_ALL_TYPEDEFS(32f, float32_t, gray_alpha)

/// \ingroup ColorConvert
/// \brief Gray Alpha to RGBA
template <>
struct default_color_converter_impl<gray_alpha_t,rgba_t> {
    template <typename P1, typename P2>
    void operator()(const P1& src, P2& dst) const {
        get_color(dst,red_t())  =
            channel_convert<typename color_element_type<P2, red_t>::type>(get_color(src,gray_color_t()));
        get_color(dst,green_t())=
            channel_convert<typename color_element_type<P2, green_t>::type>(get_color(src,gray_color_t()));
        get_color(dst,blue_t()) =
            channel_convert<typename color_element_type<P2, blue_t>::type>(get_color(src,gray_color_t()));
        get_color(dst,alpha_t()) =
            channel_convert<typename color_element_type<P2, alpha_t>::type>(get_color(src,alpha_t()));
    }
};

/// \brief Gray Alpha to RGB
template <>
struct default_color_converter_impl<gray_alpha_t,rgb_t> {
    template <typename P1, typename P2>
    void operator()(const P1& src, P2& dst) const {
        get_color(dst,red_t())  =
            channel_convert<typename color_element_type<P2, red_t>::type>(
                channel_multiply(get_color(src,gray_color_t()),get_color(src,alpha_t()) )
                );
        get_color(dst,green_t())  =
            channel_convert<typename color_element_type<P2, green_t>::type>(
                channel_multiply(get_color(src,gray_color_t()),get_color(src,alpha_t()) )
                );
        get_color(dst,blue_t())  =
            channel_convert<typename color_element_type<P2, blue_t>::type>(
                channel_multiply(get_color(src,gray_color_t()),get_color(src,alpha_t()) )
                );
    }
};

/// \brief Gray Alpha to Gray
template <>
struct default_color_converter_impl<gray_alpha_t,gray_t> {
    template <typename P1, typename P2>
    void operator()(const P1& src, P2& dst) const {
        get_color(dst,gray_color_t())  =
            channel_convert<typename color_element_type<P2, gray_color_t>::type>(
                channel_multiply(get_color(src,gray_color_t()),get_color(src,alpha_t()) )
                );
    }
};

} // namespace gil
} // namespace boost

#endif

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