// This file is part of OpenCV project.
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// It is subject to the license terms in the LICENSE file found in the top-level directory
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// of this distribution and at http://opencv.org/license.html.
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//
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// Copyright (C) 2018 Intel Corporation
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#ifndef OPENCV_GAPI_GARG_HPP
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#define OPENCV_GAPI_GARG_HPP
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#include <vector>
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#include <type_traits>
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#include <opencv2/gapi/opencv_includes.hpp>
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#include <opencv2/gapi/own/mat.hpp>
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#include <opencv2/gapi/util/any.hpp>
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#include <opencv2/gapi/util/variant.hpp>
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#include <opencv2/gapi/gmat.hpp>
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#include <opencv2/gapi/gscalar.hpp>
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#include <opencv2/gapi/garray.hpp>
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#include <opencv2/gapi/gtype_traits.hpp>
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#include <opencv2/gapi/gmetaarg.hpp>
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#include <opencv2/gapi/own/scalar.hpp>
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#include <opencv2/gapi/streaming/source.hpp>
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namespace cv {
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class GArg;
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namespace detail {
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template<typename T>
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using is_garg = std::is_same<GArg, typename std::decay<T>::type>;
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}
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// Parameter holder class for a node
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// Depending on platform capabilities, can either support arbitrary types
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// (as `boost::any`) or a limited number of types (as `boot::variant`).
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// FIXME: put into "details" as a user shouldn't use it in his code
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class GAPI_EXPORTS GArg
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{
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public:
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GArg() {}
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template<typename T, typename std::enable_if<!detail::is_garg<T>::value, int>::type = 0>
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explicit GArg(const T &t)
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: kind(detail::GTypeTraits<T>::kind)
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, value(detail::wrap_gapi_helper<T>::wrap(t))
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{
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}
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template<typename T, typename std::enable_if<!detail::is_garg<T>::value, int>::type = 0>
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explicit GArg(T &&t)
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: kind(detail::GTypeTraits<typename std::decay<T>::type>::kind)
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, value(detail::wrap_gapi_helper<T>::wrap(t))
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{
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}
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template<typename T> inline T& get()
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{
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return util::any_cast<typename std::remove_reference<T>::type>(value);
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}
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template<typename T> inline const T& get() const
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{
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return util::any_cast<typename std::remove_reference<T>::type>(value);
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}
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template<typename T> inline T& unsafe_get()
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{
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return util::unsafe_any_cast<typename std::remove_reference<T>::type>(value);
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}
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template<typename T> inline const T& unsafe_get() const
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{
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return util::unsafe_any_cast<typename std::remove_reference<T>::type>(value);
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}
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detail::ArgKind kind = detail::ArgKind::OPAQUE_VAL;
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protected:
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util::any value;
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};
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using GArgs = std::vector<GArg>;
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// FIXME: Express as M<GProtoArg...>::type
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// FIXME: Move to a separate file!
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using GRunArg = util::variant<
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#if !defined(GAPI_STANDALONE)
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cv::Mat,
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cv::Scalar,
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cv::UMat,
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#endif // !defined(GAPI_STANDALONE)
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cv::gapi::wip::IStreamSource::Ptr,
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cv::gapi::own::Mat,
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cv::gapi::own::Scalar,
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cv::detail::VectorRef
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>;
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using GRunArgs = std::vector<GRunArg>;
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namespace gapi
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{
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namespace wip
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{
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/**
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* @brief This aggregate type represents all types which G-API can handle (via variant).
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*
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* It only exists to overcome C++ language limitations (where a `using`-defined class can't be forward-declared).
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*/
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struct Data: public GRunArg
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{
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using GRunArg::GRunArg;
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template <typename T>
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Data& operator= (const T& t) { GRunArg::operator=(t); return *this; }
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template <typename T>
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Data& operator= (T&& t) { GRunArg::operator=(std::move(t)); return *this; }
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};
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} // namespace wip
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} // namespace gapi
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using GRunArgP = util::variant<
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#if !defined(GAPI_STANDALONE)
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cv::Mat*,
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cv::Scalar*,
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cv::UMat*,
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#endif // !defined(GAPI_STANDALONE)
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cv::gapi::own::Mat*,
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cv::gapi::own::Scalar*,
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cv::detail::VectorRef
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>;
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using GRunArgsP = std::vector<GRunArgP>;
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template<typename... Ts> inline GRunArgs gin(const Ts&... args)
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{
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return GRunArgs{ GRunArg(detail::wrap_host_helper<Ts>::wrap_in(args))... };
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}
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template<typename... Ts> inline GRunArgsP gout(Ts&... args)
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{
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return GRunArgsP{ GRunArgP(detail::wrap_host_helper<Ts>::wrap_out(args))... };
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}
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} // namespace cv
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#endif // OPENCV_GAPI_GARG_HPP
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