65 lines
2.7 KiB
C++
65 lines
2.7 KiB
C++
// 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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#ifndef BACKEND_HPP_DEFINED
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#define BACKEND_HPP_DEFINED
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#include "cap_interface.hpp"
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#include "opencv2/videoio/registry.hpp"
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namespace cv {
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// TODO: move to public interface
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// TODO: allow runtime backend registration
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class IBackend
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{
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public:
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virtual ~IBackend() {}
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virtual Ptr<IVideoCapture> createCapture(int camera, const VideoCaptureParameters& params) const = 0;
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virtual Ptr<IVideoCapture> createCapture(const std::string &filename, const VideoCaptureParameters& params) const = 0;
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virtual Ptr<IVideoWriter> createWriter(const std::string& filename, int fourcc, double fps, const cv::Size& sz,
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const VideoWriterParameters& params) const = 0;
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};
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class IBackendFactory
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{
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public:
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virtual ~IBackendFactory() {}
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virtual Ptr<IBackend> getBackend() const = 0;
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virtual bool isBuiltIn() const = 0;
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};
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//=============================================================================
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typedef Ptr<IVideoCapture> (*FN_createCaptureFile)(const std::string & filename);
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typedef Ptr<IVideoCapture> (*FN_createCaptureCamera)(int camera);
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typedef Ptr<IVideoCapture> (*FN_createCaptureFileWithParams)(const std::string & filename, const VideoCaptureParameters& params);
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typedef Ptr<IVideoCapture> (*FN_createCaptureCameraWithParams)(int camera, const VideoCaptureParameters& params);
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typedef Ptr<IVideoWriter> (*FN_createWriter)(const std::string& filename, int fourcc, double fps, const Size& sz,
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const VideoWriterParameters& params);
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Ptr<IBackendFactory> createBackendFactory(FN_createCaptureFile createCaptureFile,
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FN_createCaptureCamera createCaptureCamera,
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FN_createWriter createWriter);
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Ptr<IBackendFactory> createBackendFactory(FN_createCaptureFileWithParams createCaptureFile,
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FN_createCaptureCameraWithParams createCaptureCamera,
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FN_createWriter createWriter);
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Ptr<IBackendFactory> createPluginBackendFactory(VideoCaptureAPIs id, const char* baseName);
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void applyParametersFallback(const Ptr<IVideoCapture>& cap, const VideoCaptureParameters& params);
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std::string getCapturePluginVersion(
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const Ptr<IBackendFactory>& backend_factory,
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CV_OUT int& version_ABI,
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CV_OUT int& version_API
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);
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std::string getWriterPluginVersion(
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const Ptr<IBackendFactory>& backend_factory,
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CV_OUT int& version_ABI,
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CV_OUT int& version_API
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);
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} // namespace cv::
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#endif // BACKEND_HPP_DEFINED
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