feat():initial version

install/boost_1_75_0/include/boost/gil/rgba.hpp

@@ -0,0 +1,58 @@
+//
+// Copyright 2005-2007 Adobe Systems Incorporated
+//
+// 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_RGBA_HPP
+#define BOOST_GIL_RGBA_HPP
+
+#include <boost/gil/planar_pixel_iterator.hpp>
+#include <boost/gil/rgb.hpp>
+#include <boost/gil/detail/mp11.hpp>
+
+#include <cstddef>
+#include <type_traits>
+
+namespace boost { namespace gil {
+
+/// \ingroup ColorNameModel
+/// \brief Alpha
+struct alpha_t {};
+
+/// \ingroup ColorSpaceModel
+using rgba_t =mp11::mp_list<red_t, green_t, blue_t, alpha_t>;
+
+/// \ingroup LayoutModel
+using rgba_layout_t = layout<rgba_t>;
+
+/// \ingroup LayoutModel
+using bgra_layout_t = layout<rgba_t, mp11::mp_list_c<int, 2, 1, 0, 3>>;
+
+/// \ingroup LayoutModel
+using argb_layout_t = layout<rgba_t, mp11::mp_list_c<int, 1, 2, 3, 0>>;
+
+/// \ingroup LayoutModel
+using abgr_layout_t = layout<rgba_t, mp11::mp_list_c<int, 3, 2, 1, 0>>;
+
+/// \ingroup ImageViewConstructors
+/// \brief from raw RGBA planar data
+template <typename ChannelPtr>
+inline
+auto planar_rgba_view(std::size_t width, std::size_t height,
+    ChannelPtr r, ChannelPtr g, ChannelPtr b, ChannelPtr a,
+    std::ptrdiff_t rowsize_in_bytes)
+    -> typename type_from_x_iterator<planar_pixel_iterator<ChannelPtr, rgba_t> >::view_t
+{
+    using pixel_iterator_t = planar_pixel_iterator<ChannelPtr, rgba_t>;
+    using view_t = typename type_from_x_iterator<pixel_iterator_t>::view_t;
+    using locator_t = typename view_t::locator;
+
+    locator_t loc(pixel_iterator_t(r, g, b, a), rowsize_in_bytes);
+    return view_t(width, height, loc);
+}
+
+}} // namespace boost::gil
+
+#endif