1 // Capture support for WinRT 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 "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 }