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OpenCV/include/opencv2/gapi/streaming/gstreamer/gstreamerpipeline.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_GSTREAMER_GSTREAMERPIPELINE_HPP
+#define OPENCV_GAPI_STREAMING_GSTREAMER_GSTREAMERPIPELINE_HPP
+
+#include <opencv2/gapi/streaming/gstreamer/gstreamersource.hpp>
+#include <opencv2/gapi/own/exports.hpp>
+
+#include <string>
+#include <unordered_map>
+#include <memory>
+
+namespace cv {
+namespace gapi {
+namespace wip {
+namespace gst {
+
+class GAPI_EXPORTS_W GStreamerPipeline
+{
+public:
+    class Priv;
+
+    GAPI_WRAP explicit GStreamerPipeline(const std::string& pipeline);
+    IStreamSource::Ptr getStreamingSource(const std::string& appsinkName,
+                                          const GStreamerSource::OutputType outputType =
+                                              GStreamerSource::OutputType::MAT);
+    virtual ~GStreamerPipeline();
+
+protected:
+    explicit GStreamerPipeline(std::unique_ptr<Priv> priv);
+
+    std::unique_ptr<Priv> m_priv;
+};
+
+} // namespace gst
+
+using GStreamerPipeline = gst::GStreamerPipeline;
+
+// NB: Function for using from python
+// FIXME: a separate function is created due to absence of wrappers for `shared_ptr<> `
+// Ideally would be to wrap the `GStreamerPipeline::getStreamingSource()` method as is
+GAPI_EXPORTS_W cv::Ptr<IStreamSource>
+inline get_streaming_source(cv::Ptr<GStreamerPipeline>& pipeline,
+                            const std::string& appsinkName,
+                            const GStreamerSource::OutputType outputType
+                                = GStreamerSource::OutputType::MAT)
+{
+    return pipeline->getStreamingSource(appsinkName, outputType);
+}
+
+} // namespace wip
+} // namespace gapi
+} // namespace cv
+
+#endif // OPENCV_GAPI_STREAMING_GSTREAMER_GSTREAMERPIPELINE_HPP