/* | |
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 |