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55 lines
1.7 KiB
C++
55 lines
1.7 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 __OPENCV_VIDEOIO_VIDEOIO_REGISTRY_HPP__
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#define __OPENCV_VIDEOIO_VIDEOIO_REGISTRY_HPP__
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#include "opencv2/videoio.hpp"
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#include "opencv2/videoio/registry.hpp"
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#include "backend.hpp"
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namespace cv
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{
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/** Capabilities bitmask */
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enum BackendMode {
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MODE_CAPTURE_BY_INDEX = 1 << 0, //!< device index
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MODE_CAPTURE_BY_FILENAME = 1 << 1, //!< filename or device path (v4l2)
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MODE_WRITER = 1 << 4, //!< writer
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MODE_DYNAMIC = 1 << 5,
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MODE_CAPTURE_ALL = MODE_CAPTURE_BY_INDEX + MODE_CAPTURE_BY_FILENAME,
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};
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struct VideoBackendInfo {
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VideoCaptureAPIs id;
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BackendMode mode;
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int priority; // 1000-<index*10> - default builtin priority
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// 0 - disabled (OPENCV_VIDEOIO_PRIORITY_<name> = 0)
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// >10000 - prioritized list (OPENCV_VIDEOIO_PRIORITY_LIST)
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const char* name;
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Ptr<IBackend> backendFactory;
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};
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/** @brief Manages list of enabled backends
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*/
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class VideoBackendRegistry
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{
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public:
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typedef std::vector<VideoBackendInfo> BackendsVec;
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protected:
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BackendsVec enabledBackends;
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VideoBackendRegistry();
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public:
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std::string dumpBackends() const;
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Ptr<IBackend> getBackend(VideoCaptureAPIs api) const;
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BackendsVec getBackends(int capabilityMask, VideoCaptureAPIs filter = CAP_ANY) const;
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bool hasBackend(int mask, VideoCaptureAPIs api) const;
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static VideoBackendRegistry& getInstance();
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};
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} // namespace
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#endif // __OPENCV_VIDEOIO_VIDEOIO_REGISTRY_HPP__
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