// This file is part of OpenCV project.
|
// It is subject to the license terms in the LICENSE file found in the top-level directory
|
// of this distribution and at http://opencv.org/license.html.
|
//
|
// Copyright (C) 2018 Intel Corporation
|
|
|
#ifndef OPENCV_GAPI_GMETAARG_HPP
|
#define OPENCV_GAPI_GMETAARG_HPP
|
|
#include <vector>
|
#include <type_traits>
|
|
#include <opencv2/gapi/util/util.hpp>
|
#include <opencv2/gapi/util/variant.hpp>
|
|
#include <opencv2/gapi/gmat.hpp>
|
#include <opencv2/gapi/gscalar.hpp>
|
#include <opencv2/gapi/garray.hpp>
|
|
namespace cv
|
{
|
// FIXME: Rename to GMeta?
|
// FIXME: user shouldn't deal with it - put to detail?
|
// GMetaArg is an union type over descriptions of G-types which can serve as
|
// GComputation's in/output slots.
|
//
|
// GMetaArg objects are passed as arguments to GComputation::compile()
|
// to specify which data a compiled computation should be specialized on.
|
// For manual compile(), user must supply this metadata, in case of apply()
|
// this metadata is taken from arguments computation should operate on.
|
//
|
// The first type (monostate) is equal to "uninitialized"/"unresolved" meta.
|
using GMetaArg = util::variant
|
< util::monostate
|
, GMatDesc
|
, GScalarDesc
|
, GArrayDesc
|
>;
|
GAPI_EXPORTS std::ostream& operator<<(std::ostream& os, const GMetaArg &);
|
|
using GMetaArgs = std::vector<GMetaArg>;
|
|
namespace detail
|
{
|
// These traits are used by GComputation::compile()
|
|
// FIXME: is_constructible<T> doesn't work as variant doesn't do any SFINAE
|
// in its current template constructor
|
|
template<typename T> struct is_meta_descr : std::false_type {};
|
template<> struct is_meta_descr<GMatDesc> : std::true_type {};
|
template<> struct is_meta_descr<GScalarDesc> : std::true_type {};
|
template<> struct is_meta_descr<GArrayDesc> : std::true_type {};
|
|
template<typename... Ts>
|
using are_meta_descrs = all_satisfy<is_meta_descr, Ts...>;
|
|
template<typename... Ts>
|
using are_meta_descrs_but_last = all_satisfy<is_meta_descr, typename all_but_last<Ts...>::type>;
|
|
} // namespace detail
|
|
// Note: descr_of(std::vector<..>) returns a GArrayDesc, while
|
// descrs_of(std::vector<..>) returns an array of Meta args!
|
class Mat;
|
class UMat;
|
GAPI_EXPORTS cv::GMetaArgs descrs_of(const std::vector<cv::Mat> &vec);
|
GAPI_EXPORTS cv::GMetaArgs descrs_of(const std::vector<cv::UMat> &vec);
|
namespace gapi { namespace own {
|
class Mat;
|
GAPI_EXPORTS cv::GMetaArgs descrs_of(const std::vector<Mat> &vec);
|
}} // namespace gapi::own
|
|
} // namespace cv
|
|
#endif // OPENCV_GAPI_GMETAARG_HPP
|
