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// 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) 2021 Intel Corporation
#ifndef OPENCV_GAPI_PYTHON_API_HPP
#define OPENCV_GAPI_PYTHON_API_HPP
#include <opencv2/gapi/gkernel.hpp> // GKernelPackage
#include <opencv2/gapi/own/exports.hpp> // GAPI_EXPORTS
namespace cv {
namespace gapi {
/**
* @brief This namespace contains G-API Python backend functions,
* structures, and symbols.
*
* This functionality is required to enable G-API custom operations
* and kernels when using G-API from Python, no need to use it in the
* C++ form.
*/
namespace python {
GAPI_EXPORTS cv::gapi::GBackend backend();
struct GPythonContext
{
const cv::GArgs &ins;
const cv::GMetaArgs &in_metas;
const cv::GTypesInfo &out_info;
cv::optional<cv::GArg> m_state;
};
using Impl = std::function<cv::GRunArgs(const GPythonContext&)>;
using Setup = std::function<cv::GArg(const GMetaArgs&, const GArgs&)>;
class GAPI_EXPORTS GPythonKernel
{
public:
GPythonKernel() = default;
GPythonKernel(Impl run, Setup setup);
Impl run;
Setup setup = nullptr;
bool is_stateful = false;
};
class GAPI_EXPORTS GPythonFunctor : public cv::gapi::GFunctor
{
public:
using Meta = cv::GKernel::M;
GPythonFunctor(const char* id, const Meta& meta, const Impl& impl,
const Setup& setup = nullptr);
GKernelImpl impl() const override;
gapi::GBackend backend() const override;
private:
GKernelImpl impl_;
};
} // namespace python
} // namespace gapi
} // namespace cv
#endif // OPENCV_GAPI_PYTHON_API_HPP
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