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      1 // Video support with XAML
      2 
      3 // Copyright (c) Microsoft Open Technologies, Inc.
      4 // All rights reserved.
      5 //
      6 // (3 - clause BSD License)
      7 //
      8 // Redistribution and use in source and binary forms, with or without modification, are permitted provided that
      9 // the following conditions are met:
     10 //
     11 // 1. Redistributions of source code must retain the above copyright notice, this list of conditions and the
     12 // following disclaimer.
     13 // 2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the
     14 // following disclaimer in the documentation and/or other materials provided with the distribution.
     15 // 3. Neither the name of the copyright holder nor the names of its contributors may be used to endorse or
     16 // promote products derived from this software without specific prior written permission.
     17 //
     18 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED
     19 // WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
     20 // PARTICULAR PURPOSE ARE DISCLAIMED.IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY
     21 // DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES(INCLUDING, BUT NOT LIMITED TO,
     22 // PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     23 // HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT(INCLUDING
     24 // NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     25 // POSSIBILITY OF SUCH DAMAGE.
     26 
     27 #pragma once
     28 
     29 #include "cap_winrt/CaptureFrameGrabber.hpp"
     30 
     31 #include <mutex>
     32 #include <memory>
     33 
     34 class Video {
     35 public:
     36 
     37     // non-blocking
     38     bool initGrabber(int device, int w, int h);
     39     void closeGrabber();
     40     bool isStarted();
     41 
     42     // singleton
     43     static Video &getInstance();
     44 
     45     void CopyOutput();
     46 
     47 private:
     48     // singleton
     49     Video();
     50 
     51     void _GrabFrameAsync(::Media::CaptureFrameGrabber^ frameGrabber);
     52 
     53     bool listDevices();
     54 
     55     Platform::Agile<Windows::Media::Capture::MediaCapture> m_capture;
     56     Platform::Agile<Windows::Devices::Enumeration::DeviceInformationCollection> m_devices;
     57 
     58     ::Media::CaptureFrameGrabber^ m_frameGrabber;
     59 
     60     bool listDevicesTask();
     61 
     62     bool					bChooseDevice;
     63     bool 					bVerbose;
     64     bool                    bFlipImageX;
     65     //std::atomic<bool>       bGrabberInited;
     66     int						m_deviceID;
     67     int						attemptFramerate;
     68     std::atomic<bool>       bIsFrameNew;
     69     std::atomic<bool>       bGrabberInited;
     70     std::atomic<bool>       bGrabberInitInProgress;
     71     unsigned int			width, height;
     72     int                     bytesPerPixel;
     73 
     74 };