58 lines
1.6 KiB
C++
58 lines
1.6 KiB
C++
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//
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// Copyright 2005-2007 Adobe Systems Incorporated
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//
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// Distributed under the Boost Software License, Version 1.0
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// See accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt
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//
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#ifndef BOOST_GIL_RGBA_HPP
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#define BOOST_GIL_RGBA_HPP
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#include <boost/gil/planar_pixel_iterator.hpp>
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#include <boost/gil/rgb.hpp>
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#include <boost/gil/detail/mp11.hpp>
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#include <cstddef>
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#include <type_traits>
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namespace boost { namespace gil {
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/// \ingroup ColorNameModel
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/// \brief Alpha
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struct alpha_t {};
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/// \ingroup ColorSpaceModel
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using rgba_t =mp11::mp_list<red_t, green_t, blue_t, alpha_t>;
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/// \ingroup LayoutModel
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using rgba_layout_t = layout<rgba_t>;
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/// \ingroup LayoutModel
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using bgra_layout_t = layout<rgba_t, mp11::mp_list_c<int, 2, 1, 0, 3>>;
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/// \ingroup LayoutModel
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using argb_layout_t = layout<rgba_t, mp11::mp_list_c<int, 1, 2, 3, 0>>;
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/// \ingroup LayoutModel
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using abgr_layout_t = layout<rgba_t, mp11::mp_list_c<int, 3, 2, 1, 0>>;
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/// \ingroup ImageViewConstructors
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/// \brief from raw RGBA planar data
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template <typename ChannelPtr>
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inline auto planar_rgba_view(std::size_t width, std::size_t height,
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ChannelPtr r, ChannelPtr g, ChannelPtr b, ChannelPtr a,
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std::ptrdiff_t rowsize_in_bytes)
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-> typename type_from_x_iterator<planar_pixel_iterator<ChannelPtr, rgba_t> >::view_t
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{
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using pixel_iterator_t = planar_pixel_iterator<ChannelPtr, rgba_t>;
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using view_t = typename type_from_x_iterator<pixel_iterator_t>::view_t;
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using locator_t = typename view_t::locator;
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locator_t loc(pixel_iterator_t(r, g, b, a), rowsize_in_bytes);
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return view_t(width, height, loc);
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}
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}} // namespace boost::gil
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#endif
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