/usr/include/boost/gil/extension/dynamic_image
Edit: /usr/include/boost/gil/extension/dynamic_image/image_view_factory.hpp (14257B)
//
// 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_EXTENSION_DYNAMIC_IMAGE_IMAGE_VIEW_FACTORY_HPP
#define BOOST_GIL_EXTENSION_DYNAMIC_IMAGE_IMAGE_VIEW_FACTORY_HPP
#include
#include
#include
#include
#include
#include
namespace boost { namespace gil {
// Methods for constructing any image views from other any image views
// Extends image view factory to runtime type-specified views (any_image_view)
namespace detail {
template
struct flipped_up_down_view_fn
{
using result_type = ResultView;
template
auto operator()(View const& src) const -> result_type
{
return result_type{flipped_up_down_view(src)};
}
};
template
struct flipped_left_right_view_fn
{
using result_type = ResultView;
template
auto operator()(View const& src) const -> result_type
{
return result_type{flipped_left_right_view(src)};
}
};
template
struct rotated90cw_view_fn
{
using result_type = ResultView;
template
auto operator()(View const& src) const -> result_type
{
return result_type{rotated90cw_view(src)};
}
};
template
struct rotated90ccw_view_fn
{
using result_type = ResultView;
template
auto operator()(View const& src) const -> result_type
{
return result_type{rotated90ccw_view(src)};
}
};
template
struct tranposed_view_fn
{
using result_type = ResultView;
template
auto operator()(View const& src) const -> result_type
{
return result_type{tranposed_view(src)};
}
};
template
struct rotated180_view_fn
{
using result_type = ResultView;
template
auto operator()(View const& src) const -> result_type
{
return result_type{rotated180_view(src)};
}
};
template
struct subimage_view_fn
{
using result_type = ResultView;
subimage_view_fn(point_t const& topleft, point_t const& dimensions)
: _topleft(topleft), _size2(dimensions)
{}
template
auto operator()(View const& src) const -> result_type
{
return result_type{subimage_view(src,_topleft,_size2)};
}
point_t _topleft;
point_t _size2;
};
template
struct subsampled_view_fn
{
using result_type = ResultView;
subsampled_view_fn(point_t const& step) : _step(step) {}
template
auto operator()(View const& src) const -> result_type
{
return result_type{subsampled_view(src,_step)};
}
point_t _step;
};
template
struct nth_channel_view_fn
{
using result_type = ResultView;
nth_channel_view_fn(int n) : _n(n) {}
template
auto operator()(View const& src) const -> result_type
{
return result_type(nth_channel_view(src,_n));
}
int _n;
};
template
struct color_converted_view_fn
{
using result_type = ResultView;
color_converted_view_fn(CC cc = CC()): _cc(cc) {}
template
auto operator()(View const& src) const -> result_type
{
return result_type{color_converted_view(src, _cc)};
}
private:
CC _cc;
};
} // namespace detail
/// \ingroup ImageViewTransformationsFlipUD
/// \tparam Views Models Boost.MP11-compatible list of models of ImageViewConcept
template
inline
auto flipped_up_down_view(any_image_view const& src)
-> typename dynamic_y_step_type>::type
{
using result_view_t = typename dynamic_y_step_type>::type;
return apply_operation(src, detail::flipped_up_down_view_fn());
}
/// \ingroup ImageViewTransformationsFlipLR
/// \tparam Views Models Boost.MP11-compatible list of models of ImageViewConcept
template
inline
auto flipped_left_right_view(any_image_view const& src)
-> typename dynamic_x_step_type>::type
{
using result_view_t = typename dynamic_x_step_type>::type;
return apply_operation(src, detail::flipped_left_right_view_fn());
}
/// \ingroup ImageViewTransformationsTransposed
/// \tparam Views Models Boost.MP11-compatible list of models of ImageViewConcept
template
inline
auto transposed_view(const any_image_view& src)
-> typename dynamic_xy_step_transposed_type>::type
{
using result_view_t = typename dynamic_xy_step_transposed_type>::type;
return apply_operation(src, detail::tranposed_view_fn());
}
/// \ingroup ImageViewTransformations90CW
/// \tparam Views Models Boost.MP11-compatible list of models of ImageViewConcept
template
inline
auto rotated90cw_view(const any_image_view& src)
-> typename dynamic_xy_step_transposed_type>::type
{
using result_view_t = typename dynamic_xy_step_transposed_type>::type;
return apply_operation(src,detail::rotated90cw_view_fn());
}
/// \ingroup ImageViewTransformations90CCW
/// \tparam Views Models Boost.MP11-compatible list of models of ImageViewConcept
template
inline
auto rotated90ccw_view(const any_image_view& src)
-> typename dynamic_xy_step_transposed_type>::type
{
return apply_operation(src,detail::rotated90ccw_view_fn>::type>());
}
/// \ingroup ImageViewTransformations180
/// \tparam Views Models Boost.MP11-compatible list of models of ImageViewConcept
template
inline
auto rotated180_view(any_image_view const& src)
-> typename dynamic_xy_step_type>::type
{
using step_type = typename dynamic_xy_step_type>::type;
return apply_operation(src, detail::rotated180_view_fn());
}
/// \ingroup ImageViewTransformationsSubimage
/// \tparam Views Models Boost.MP11-compatible list of models of ImageViewConcept
template
inline
auto subimage_view(
any_image_view const& src,
point_t const& topleft,
point_t const& dimensions)
-> any_image_view
{
using subimage_view_fn = detail::subimage_view_fn>;
return apply_operation(src, subimage_view_fn(topleft, dimensions));
}
/// \ingroup ImageViewTransformationsSubimage
/// \tparam Views Models Boost.MP11-compatible list of models of ImageViewConcept
template
inline
auto subimage_view(
any_image_view const& src,
std::ptrdiff_t x_min, std::ptrdiff_t y_min, std::ptrdiff_t width, std::ptrdiff_t height)
-> any_image_view
{
using subimage_view_fn = detail::subimage_view_fn>;
return apply_operation(src, subimage_view_fn(point_t(x_min, y_min),point_t(width, height)));
}
/// \ingroup ImageViewTransformationsSubsampled
/// \tparam Views Models Boost.MP11-compatible list of models of ImageViewConcept
template
inline
auto subsampled_view(any_image_view const& src, point_t const& step)
-> typename dynamic_xy_step_type>::type
{
using step_type = typename dynamic_xy_step_type>::type;
using subsampled_view = detail::subsampled_view_fn;
return apply_operation(src, subsampled_view(step));
}
/// \ingroup ImageViewTransformationsSubsampled
/// \tparam Views Models Boost.MP11-compatible list of models of ImageViewConcept
template
inline
auto subsampled_view(any_image_view const& src, std::ptrdiff_t x_step, std::ptrdiff_t y_step)
-> typename dynamic_xy_step_type>::type
{
using step_type = typename dynamic_xy_step_type>::type;
using subsampled_view_fn = detail::subsampled_view_fn;
return apply_operation(src, subsampled_view_fn(point_t(x_step, y_step)));
}
namespace detail {
template
struct get_nthchannel_type { using type = typename nth_channel_view_type::type; };
template
struct views_get_nthchannel_type : mp11::mp_transform {};
} // namespace detail
/// \ingroup ImageViewTransformationsNthChannel
/// \brief Given a runtime source image view, returns the type of a runtime image view over a single channel of the source view
template
struct nth_channel_view_type>
{
using type = typename detail::views_get_nthchannel_type>;
};
/// \ingroup ImageViewTransformationsNthChannel
/// \tparam Views Models Boost.MP11-compatible list of models of ImageViewConcept
template
inline
auto nth_channel_view(const any_image_view& src, int n)
-> typename nth_channel_view_type>::type
{
using result_view_t = typename nth_channel_view_type>::type;
return apply_operation(src,detail::nth_channel_view_fn(n));
}
namespace detail {
template
struct get_ccv_type : color_converted_view_type {};
template
struct views_get_ccv_type
{
private:
// FIXME: Remove class name injection with detail:: qualification
// Required as workaround for MP11 issue that treats unqualified metafunction
// in the class definition of the same name as the specialization (Peter Dimov):
// invalid template argument for template parameter 'F', expected a class template
template
using ccvt = detail::get_ccv_type;
public:
using type = mp11::mp_transform;
};
} // namespace detail
/// \ingroup ImageViewTransformationsColorConvert
/// \brief Returns the type of a runtime-specified view, color-converted to a given pixel type with user specified color converter
template
struct color_converted_view_type,DstP,CC>
{
//using type = any_image_view::type>;
using type = detail::views_get_ccv_type, DstP, CC>;
};
/// \ingroup ImageViewTransformationsColorConvert
/// \brief overload of generic color_converted_view with user defined color-converter
/// \tparam Views Models Boost.MP11-compatible list of models of ImageViewConcept
template
inline
auto color_converted_view(const any_image_view& src, CC)
-> typename color_converted_view_type, DstP, CC>::type
{
using cc_view_t = typename color_converted_view_type, DstP, CC>::type;
return apply_operation(src, detail::color_converted_view_fn());
}
/// \ingroup ImageViewTransformationsColorConvert
/// \brief Returns the type of a runtime-specified view, color-converted to a given pixel type with the default coor converter
template
struct color_converted_view_type,DstP>
{
using type = detail::views_get_ccv_type, DstP, default_color_converter>;
};
/// \ingroup ImageViewTransformationsColorConvert
/// \brief overload of generic color_converted_view with the default color-converter
/// \tparam Views Models Boost.MP11-compatible list of models of ImageViewConcept
template
inline
auto color_converted_view(any_image_view const& src)
-> typename color_converted_view_type, DstP>::type
{
using cc_view_t = typename color_converted_view_type, DstP>::type;
return apply_operation(src, detail::color_converted_view_fn());
}
/// \ingroup ImageViewTransformationsColorConvert
/// \brief overload of generic color_converted_view with user defined color-converter
/// These are workarounds for GCC 3.4, which thinks color_converted_view is ambiguous with the same method for templated views (in gil/image_view_factory.hpp)
/// \tparam Views Models Boost.MP11-compatible list of models of ImageViewConcept
template
inline
auto any_color_converted_view(const any_image_view& src, CC)
-> typename color_converted_view_type, DstP, CC>::type
{
using cc_view_t = typename color_converted_view_type, DstP, CC>::type;
return apply_operation(src, detail::color_converted_view_fn());
}
/// \ingroup ImageViewTransformationsColorConvert
/// \brief overload of generic color_converted_view with the default color-converter
/// These are workarounds for GCC 3.4, which thinks color_converted_view is ambiguous with the same method for templated views (in gil/image_view_factory.hpp)
/// \tparam Views Models Boost.MP11-compatible list of models of ImageViewConcept
template
inline
auto any_color_converted_view(const any_image_view& src)
-> typename color_converted_view_type, DstP>::type
{
using cc_view_t = typename color_converted_view_type, DstP>::type;
return apply_operation(src, detail::color_converted_view_fn());
}
/// \}
}} // namespace boost::gil
#endif