// 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_FLUID_BUFFER_HPP
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#define OPENCV_GAPI_FLUID_BUFFER_HPP
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#include <list>
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#include <numeric> // accumulate
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#include <ostream> // ostream
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#include <cstdint> // uint8_t
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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/gmat.hpp>
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#include <opencv2/gapi/util/optional.hpp>
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#include <opencv2/gapi/own/scalar.hpp>
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#include <opencv2/gapi/own/mat.hpp>
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namespace cv {
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namespace gapi {
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namespace fluid {
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struct Border
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{
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#if !defined(GAPI_STANDALONE)
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// This constructor is required to support existing kernels which are part of G-API
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Border(int _type, cv::Scalar _val) : type(_type), value(to_own(_val)) {};
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#endif // !defined(GAPI_STANDALONE)
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Border(int _type, cv::gapi::own::Scalar _val) : type(_type), value(_val) {};
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int type;
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cv::gapi::own::Scalar value;
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};
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using BorderOpt = util::optional<Border>;
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bool operator == (const Border& b1, const Border& b2);
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class GAPI_EXPORTS Buffer;
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class GAPI_EXPORTS View
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{
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public:
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struct Cache
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{
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std::vector<const uint8_t*> m_linePtrs;
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GMatDesc m_desc;
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int m_border_size = 0;
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inline const uint8_t* linePtr(int index) const
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{
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// "out_of_window" check:
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// user must not request the lines which are outside of specified kernel window
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GAPI_DbgAssert(index >= -m_border_size
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&& index < -m_border_size + static_cast<int>(m_linePtrs.size()));
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return m_linePtrs[index + m_border_size];
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}
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};
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View() = default;
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const inline uint8_t* InLineB(int index) const // -(w-1)/2...0...+(w-1)/2 for Filters
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{
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return m_cache->linePtr(index);
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}
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template<typename T> const inline T* InLine(int i) const
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{
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const uint8_t* ptr = this->InLineB(i);
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return reinterpret_cast<const T*>(ptr);
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}
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inline operator bool() const { return m_priv != nullptr; }
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bool ready() const;
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inline int length() const { return m_cache->m_desc.size.width; }
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int y() const;
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inline const GMatDesc& meta() const { return m_cache->m_desc; }
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class GAPI_EXPORTS Priv; // internal use only
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Priv& priv(); // internal use only
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const Priv& priv() const; // internal use only
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View(Priv* p);
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private:
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std::shared_ptr<Priv> m_priv;
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const Cache* m_cache;
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};
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class GAPI_EXPORTS Buffer
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{
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public:
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struct Cache
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{
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std::vector<uint8_t*> m_linePtrs;
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GMatDesc m_desc;
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};
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// Default constructor (executable creation stage,
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// all following initialization performed in Priv::init())
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Buffer();
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// Scratch constructor (user kernels)
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Buffer(const cv::GMatDesc &desc);
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// Constructor for intermediate buffers (for tests)
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Buffer(const cv::GMatDesc &desc,
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int max_line_consumption, int border_size,
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int skew,
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int wlpi,
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BorderOpt border);
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// Constructor for in/out buffers (for tests)
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Buffer(const cv::gapi::own::Mat &data, bool is_input);
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inline uint8_t* OutLineB(int index = 0)
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{
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return m_cache->m_linePtrs[index];
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}
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template<typename T> inline T* OutLine(int index = 0)
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{
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uint8_t* ptr = this->OutLineB(index);
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return reinterpret_cast<T*>(ptr);
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}
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int y() const;
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int linesReady() const;
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void debug(std::ostream &os) const;
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inline int length() const { return m_cache->m_desc.size.width; }
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int lpi() const; // LPI for WRITER
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inline const GMatDesc& meta() const { return m_cache->m_desc; }
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View mkView(int borderSize, bool ownStorage);
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class GAPI_EXPORTS Priv; // internal use only
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Priv& priv(); // internal use only
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const Priv& priv() const; // internal use only
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private:
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std::shared_ptr<Priv> m_priv;
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const Cache* m_cache;
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};
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} // namespace cv::gapi::fluid
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} // namespace cv::gapi
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} // namespace cv
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#endif // OPENCV_GAPI_FLUID_BUFFER_HPP
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