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      1 // Capture support for WinRT
      2 
      3 // Copyright (c) Microsoft Open Technologies, Inc.
      4 // All rights reserved.
      5 //
      6 // (3 - clause BSD License)
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     10 //
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     12 // following disclaimer.
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     14 // following disclaimer in the documentation and/or other materials provided with the distribution.
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     17 //
     18 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED
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     22 // PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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     25 // POSSIBILITY OF SUCH DAMAGE.
     26 
     27 #pragma once
     28 
     29 #include "precomp.hpp"
     30 
     31 #include <mutex>
     32 #include <memory>
     33 #include <condition_variable>
     34 #include <atomic>
     35 
     36 #include <agile.h>
     37 
     38 
     39 // nb. implemented the newer IVideoCapture C++ interface so that we can work
     40 // directly with Mat, not the older C cv interface
     41 // (which may have added overhead for IPL file conversion)
     42 
     43 namespace cv {
     44 
     45     class VideoCapture_WinRT : public IVideoCapture
     46     {
     47     public:
     48         VideoCapture_WinRT() : started(false) {}
     49         VideoCapture_WinRT(int device);
     50         virtual ~VideoCapture_WinRT() {}
     51 
     52         // from base class IVideoCapture
     53         virtual double getProperty(int) { return 0; }
     54         virtual bool setProperty(int, double);
     55         virtual bool grabFrame();
     56         virtual bool retrieveFrame(int channel, cv::OutputArray outArray);
     57 
     58         // Return the type of the capture object
     59         virtual int getCaptureDomain() { return CAP_WINRT; }
     60 
     61         virtual bool isOpened() const;
     62 
     63     protected:
     64 
     65         bool                    started;
     66         CvSize                  size;
     67         int                     bytesPerPixel;
     68         unsigned long           frameCurrent;
     69         std::atomic<bool>       isFrameNew;
     70     };
     71 }