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rgba.hpp
//
// 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 {
struct alpha_t {};
using rgba_t =mp11::mp_list<red_t, green_t, blue_t, alpha_t>;
using rgba_layout_t = layout<rgba_t>;
using bgra_layout_t = layout<rgba_t, mp11::mp_list_c<int, 2, 1, 0, 3>>;
using argb_layout_t = layout<rgba_t, mp11::mp_list_c<int, 1, 2, 3, 0>>;
using abgr_layout_t = layout<rgba_t, mp11::mp_list_c<int, 3, 2, 1, 0>>;
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
boost::gil::image_view
A lightweight object that interprets memory as a 2D array of pixels. Models ImageViewConcept,...
Definition: image_view.hpp:54
boost::gil::planar_rgba_view
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
from raw RGBA planar data
Definition: rgba.hpp:42
boost
defined(BOOST_NO_CXX17_HDR_MEMORY_RESOURCE)
Definition: algorithm.hpp:36
boost::gil::alpha_t
Alpha.
Definition: rgba.hpp:22
boost::gil::layout
Represents a color space and ordering of channels in memory.
Definition: utilities.hpp:268
boost::gil::planar_pixel_iterator
An iterator over planar pixels. Models HomogeneousColorBaseConcept, PixelIteratorConcept,...
Definition: planar_pixel_iterator.hpp:58
boost::gil::type_from_x_iterator
Given a pixel iterator defining access to pixels along a row, returns the types of the corresponding ...
Definition: metafunctions.hpp:303