| /* |
| Copyright 2005-2007 Adobe Systems Incorporated |
| |
| Use, modification and distribution are subject to 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). |
| |
| See http://opensource.adobe.com/gil for most recent version including documentation. |
| */ |
| /*************************************************************************************************/ |
| |
| #ifndef GIL_DYNAMICIMAGE_ANY_IMAGE_HPP |
| #define GIL_DYNAMICIMAGE_ANY_IMAGE_HPP |
| |
| //////////////////////////////////////////////////////////////////////////////////////// |
| /// \file |
| /// \brief Support for run-time instantiated images and image views |
| /// \author Lubomir Bourdev and Hailin Jin \n |
| /// Adobe Systems Incorporated |
| /// |
| /// |
| //////////////////////////////////////////////////////////////////////////////////////// |
| |
| #include "any_image_view.hpp" |
| #include "../../image.hpp" |
| |
| //#ifdef _MSC_VER |
| //#pragma warning(push) |
| //#pragma warning(disable : 4244) // conversion from 'std::ptrdiff_t' to 'int', possible loss of data. even if we static-assert the two types are the same (on visual studio 8) |
| //#endif |
| |
| namespace boost { namespace gil { |
| |
| namespace detail { |
| template <typename T> struct get_view_t { typedef typename T::view_t type; }; |
| template <typename Images> struct images_get_views_t : public mpl::transform<Images, get_view_t<mpl::_1> > {}; |
| |
| template <typename T> struct get_const_view_t { typedef typename T::const_view_t type; }; |
| template <typename Images> struct images_get_const_views_t : public mpl::transform<Images, get_const_view_t<mpl::_1> > {}; |
| |
| struct recreate_image_fnobj { |
| typedef void result_type; |
| const point2<std::ptrdiff_t>& _dimensions; |
| unsigned _alignment; |
| |
| recreate_image_fnobj(const point2<std::ptrdiff_t>& dims, unsigned alignment) : _dimensions(dims), _alignment(alignment) {} |
| template <typename Image> result_type operator()(Image& img) const { img.recreate(_dimensions,_alignment); } |
| }; |
| |
| template <typename AnyView> // Models AnyViewConcept |
| struct any_image_get_view { |
| typedef AnyView result_type; |
| template <typename Image> result_type operator()( Image& img) const { return result_type(view(img)); } |
| }; |
| |
| template <typename AnyConstView> // Models AnyConstViewConcept |
| struct any_image_get_const_view { |
| typedef AnyConstView result_type; |
| template <typename Image> result_type operator()(const Image& img) const { return result_type(const_view(img)); } |
| }; |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////////////// |
| /// \ingroup ImageModel |
| /// \brief Represents a run-time specified image. Note it does NOT model ImageConcept |
| /// |
| /// Represents an image whose type (color space, layout, planar/interleaved organization, etc) can be specified at run time. |
| /// It is the runtime equivalent of \p image. |
| /// Some of the requirements of ImageConcept, such as the \p value_type typedef cannot be fulfilled, since the language does not allow runtime type specification. |
| /// Other requirements, such as access to the pixels, would be inefficient to provide. Thus \p any_image does not fully model ImageConcept. |
| /// In particular, its \p view and \p const_view methods return \p any_image_view, which does not fully model ImageViewConcept. See \p any_image_view for more. |
| //////////////////////////////////////////////////////////////////////////////////////// |
| template <typename ImageTypes> |
| class any_image : public variant<ImageTypes> { |
| typedef variant<ImageTypes> parent_t; |
| public: |
| typedef any_image_view<typename detail::images_get_const_views_t<ImageTypes>::type> const_view_t; |
| typedef any_image_view<typename detail::images_get_views_t<ImageTypes>::type> view_t; |
| typedef std::ptrdiff_t x_coord_t; |
| typedef std::ptrdiff_t y_coord_t; |
| typedef point2<std::ptrdiff_t> point_t; |
| |
| any_image() : parent_t() {} |
| template <typename T> explicit any_image(const T& obj) : parent_t(obj) {} |
| template <typename T> explicit any_image(T& obj, bool do_swap) : parent_t(obj,do_swap) {} |
| any_image(const any_image& v) : parent_t((const parent_t&)v) {} |
| |
| template <typename T> any_image& operator=(const T& obj) { parent_t::operator=(obj); return *this; } |
| any_image& operator=(const any_image& v) { parent_t::operator=((const parent_t&)v); return *this;} |
| |
| void recreate(const point_t& dims, unsigned alignment=1) { apply_operation(*this,detail::recreate_image_fnobj(dims,alignment)); } |
| void recreate(x_coord_t width, y_coord_t height, unsigned alignment=1) { recreate(point2<std::ptrdiff_t>(width,height),alignment); } |
| |
| std::size_t num_channels() const { return apply_operation(*this, detail::any_type_get_num_channels()); } |
| point_t dimensions() const { return apply_operation(*this, detail::any_type_get_dimensions()); } |
| x_coord_t width() const { return dimensions().x; } |
| y_coord_t height() const { return dimensions().y; } |
| }; |
| |
| ///@{ |
| /// \name view, const_view |
| /// \brief Get an image view from a run-time instantiated image |
| |
| /// \ingroup ImageModel |
| |
| /// \brief Returns the non-constant-pixel view of any image. The returned view is any view. |
| template <typename Types> GIL_FORCEINLINE // Models ImageVectorConcept |
| typename any_image<Types>::view_t view(any_image<Types>& anyImage) { |
| return apply_operation(anyImage, detail::any_image_get_view<typename any_image<Types>::view_t>()); |
| } |
| |
| /// \brief Returns the constant-pixel view of any image. The returned view is any view. |
| template <typename Types> GIL_FORCEINLINE // Models ImageVectorConcept |
| typename any_image<Types>::const_view_t const_view(const any_image<Types>& anyImage) { |
| return apply_operation(anyImage, detail::any_image_get_const_view<typename any_image<Types>::const_view_t>()); |
| } |
| ///@} |
| |
| } } // namespace boost::gil |
| |
| //#ifdef _MSC_VER |
| //#pragma warning(pop) |
| //#endif |
| |
| #endif |