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73 lines
1.8 KiB
73 lines
1.8 KiB
// 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) 2020 Intel Corporation
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#ifndef OPENCV_GAPI_MEDIA_HPP
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#define OPENCV_GAPI_MEDIA_HPP
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#include <memory> // unique_ptr<>, shared_ptr<>
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#include <array> // array<>
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#include <functional> // function<>
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#include <utility> // forward<>()
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#include <opencv2/gapi/gframe.hpp>
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namespace cv {
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class GAPI_EXPORTS MediaFrame {
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public:
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enum class Access { R, W };
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class IAdapter;
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class View;
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using AdapterPtr = std::unique_ptr<IAdapter>;
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MediaFrame();
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explicit MediaFrame(AdapterPtr &&);
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template<class T, class... Args> static cv::MediaFrame Create(Args&&...);
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View access(Access) const;
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cv::GFrameDesc desc() const;
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private:
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struct Priv;
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std::shared_ptr<Priv> m;
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};
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template<class T, class... Args>
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inline cv::MediaFrame cv::MediaFrame::Create(Args&&... args) {
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std::unique_ptr<T> ptr(new T(std::forward<Args>(args)...));
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return cv::MediaFrame(std::move(ptr));
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}
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class GAPI_EXPORTS MediaFrame::View final {
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public:
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static constexpr const size_t MAX_PLANES = 4;
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using Ptrs = std::array<void*, MAX_PLANES>;
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using Strides = std::array<std::size_t, MAX_PLANES>; // in bytes
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using Callback = std::function<void()>;
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View(Ptrs&& ptrs, Strides&& strs, Callback &&cb = [](){});
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View(const View&) = delete;
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View(View&&) = default;
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~View();
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Ptrs ptr;
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Strides stride;
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private:
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Callback m_cb;
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};
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class GAPI_EXPORTS MediaFrame::IAdapter {
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public:
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virtual ~IAdapter() = 0;
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virtual cv::GFrameDesc meta() const = 0;
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virtual MediaFrame::View access(MediaFrame::Access) = 0;
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};
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} //namespace cv
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#endif // OPENCV_GAPI_MEDIA_HPP
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