| // 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) 2022 Intel Corporation | |
| namespace cv { | |
| namespace gimpl { | |
| // Graph-level executor interface. | |
| // | |
| // This class specifies API for a "super-executor" which orchestrates | |
| // the overall Island graph execution. | |
| // | |
| // Every Island (subgraph) execution is delegated to a particular | |
| // backend and is done opaquely to the GExecutor. | |
| // | |
| // Inputs to a GExecutor instance are: | |
| // - GIslandModel - a high-level graph model which may be seen as a | |
| // "procedure" to execute. | |
| // - GModel - a low-level graph of operations (from which a GIslandModel | |
| // is projected) | |
| // - GComputation runtime arguments - vectors of input/output objects | |
| // | |
| // Every GExecutor is responsible for | |
| // a. Maintaining non-island (intermediate) data objects within graph | |
| // b. Providing GIslandExecutables with input/output data according to | |
| // their protocols | |
| // c. Triggering execution of GIslandExecutables when task/data dependencies | |
| // are met. | |
| // | |
| // By default G-API stores all data on host, and cross-Island | |
| // exchange happens via host buffers (and CV data objects). | |
| // | |
| // Today's exchange data objects are: | |
| // - cv::Mat, cv::RMat - for image buffers | |
| // - cv::Scalar - for single values (with up to four components inside) | |
| // - cv::detail::VectorRef - an untyped wrapper over std::vector<T> | |
| // - cv::detail::OpaqueRef - an untyped wrapper over T | |
| // - cv::MediaFrame - for image textures and surfaces (e.g. in planar format) | |
| class GAbstractExecutor | |
| { | |
| protected: | |
| std::unique_ptr<ade::Graph> m_orig_graph; | |
| std::shared_ptr<ade::Graph> m_island_graph; | |
| cv::gimpl::GModel::Graph m_gm; // FIXME: make const? | |
| cv::gimpl::GIslandModel::Graph m_gim; // FIXME: make const? | |
| public: | |
| explicit GAbstractExecutor(std::unique_ptr<ade::Graph> &&g_model); | |
| virtual ~GAbstractExecutor() = default; | |
| virtual void run(cv::gimpl::GRuntimeArgs &&args) = 0; | |
| virtual bool canReshape() const = 0; | |
| virtual void reshape(const GMetaArgs& inMetas, const GCompileArgs& args) = 0; | |
| virtual void prepareForNewStream() = 0; | |
| const GModel::Graph& model() const; // FIXME: make it ConstGraph? | |
| }; | |
| } // namespace gimpl | |
| } // namespace cv | |