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OpenCV/include/opencv2/gapi/streaming/onevpl/source.hpp

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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_STREAMING_ONEVPL_ONEVPL_SOURCE_HPP
+#define OPENCV_GAPI_STREAMING_ONEVPL_ONEVPL_SOURCE_HPP
+
+#include <opencv2/gapi/garg.hpp>
+#include <opencv2/gapi/streaming/meta.hpp>
+#include <opencv2/gapi/streaming/source.hpp>
+#include <opencv2/gapi/streaming/onevpl/cfg_params.hpp>
+#include <opencv2/gapi/streaming/onevpl/data_provider_interface.hpp>
+#include <opencv2/gapi/streaming/onevpl/device_selector_interface.hpp>
+
+namespace cv {
+namespace gapi {
+namespace wip {
+namespace onevpl {
+using CfgParams = std::vector<CfgParam>;
+
+/**
+ * @brief G-API streaming source based on OneVPL implementation.
+ *
+ * This class implements IStreamSource interface.
+ * Its constructor takes source file path (in usual way) or @ref onevpl::IDataProvider
+ * interface implementation (for not file-based sources). It also allows to pass-through
+ * oneVPL configuration parameters by using several @ref onevpl::CfgParam.
+ *
+ * @note stream sources are passed to G-API via shared pointers, so
+ *  please gapi::make_onevpl_src<> to create objects and ptr() to pass a
+ *  GSource to cv::gin().
+ */
+class GAPI_EXPORTS GSource : public IStreamSource
+{
+public:
+    struct Priv;
+
+    GSource(const std::string& filePath,
+            const CfgParams& cfg_params = CfgParams{});
+
+    GSource(const std::string& filePath,
+            const CfgParams& cfg_params,
+            const std::string& device_id,
+            void* accel_device_ptr,
+            void* accel_ctx_ptr);
+
+    GSource(const std::string& filePath,
+            const CfgParams& cfg_params,
+            const Device &device, const Context &ctx);
+
+    GSource(const std::string& filePath,
+            const CfgParams& cfg_params,
+            std::shared_ptr<IDeviceSelector> selector);
+
+
+    GSource(std::shared_ptr<IDataProvider> source,
+            const CfgParams& cfg_params = CfgParams{});
+
+    GSource(std::shared_ptr<IDataProvider> source,
+            const CfgParams& cfg_params,
+            const std::string& device_id,
+            void* accel_device_ptr,
+            void* accel_ctx_ptr);
+
+    GSource(std::shared_ptr<IDataProvider> source,
+            const CfgParams& cfg_params,
+            std::shared_ptr<IDeviceSelector> selector);
+
+    ~GSource() override;
+
+    bool pull(cv::gapi::wip::Data& data) override;
+    GMetaArg descr_of() const override;
+
+private:
+    explicit GSource(std::unique_ptr<Priv>&& impl);
+    std::unique_ptr<Priv> m_priv;
+};
+} // namespace onevpl
+
+using GVPLSource = onevpl::GSource;
+
+template<class... Args>
+GAPI_EXPORTS_W cv::Ptr<IStreamSource> inline make_onevpl_src(Args&&... args)
+{
+    return make_src<onevpl::GSource>(std::forward<Args>(args)...);
+}
+
+} // namespace wip
+} // namespace gapi
+} // namespace cv
+
+#endif // OPENCV_GAPI_STREAMING_ONEVPL_ONEVPL_SOURCE_HPP