OZ++ Class: OpenCVVideoCaptureView |
/****************************************************************************** * * Copyright (c) 2017 Antillia.com TOSHIYUKI ARAI. ALL RIGHTS RESERVED. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions, and the following disclaimer. * * 2. The name of the author may not be used to endorse or promote products * derived from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * * * OpenCVVideoCaptureView.h * *****************************************************************************/ // 2017/08/10 // On cv::VideoCapture // See: http://docs.opencv-3.0.org/3.1.0/d8/dfe/classcv_1_1VideoCapture.html #pragma once #include <oz++/opencv/OpenCVMainView.h> #include <oz++/opencv/OpenCVVideoCapture.h> namespace OZ { class OpenCVVideoCaptureView :public OpenCVMainView { private: static const int INVALID_DEVICE_INDEX = -1; static const int DEFAULT_VIDEO_DEVICE_INDEX = 0; OpenCVVideoCapture videoCapture; public: //Constructor OpenCVVideoCaptureView(OpenCVApplication& applet, const char* caption, Args& args) :OpenCVMainView(applet, caption, args) { int deviceIndex = (int)args.get(XmNvideoDeviceIndex); int frameWidth = (int)args.get(XmNvideoFrameWidth); int frameHeight = (int)args.get(XmNvideoFrameHeight); videoCapture.set(deviceIndex, frameWidth, frameHeight); bool autoStart = (bool)args.get(XmNcaptureAutoStart); if (autoStart) { startCapture(); } } ~OpenCVVideoCaptureView() { closeVideoDevice(); } void setDeviceIndex(int index) { videoCapture.setDeviceIndex(index); } void closeVideoDevice() { try { videoCapture.close(); } catch (...) { // } setTitle(getAppName()); } virtual void startCapture() { int deviceIndex = videoCapture.getDeviceIndex(); try { videoCapture.open(); char title[PATH_MAX]; sprintf(title, "Capturing deviceIndex=%d - %s", deviceIndex, getAppName()); setTitle(title); } catch (Exception& ex) { caught(ex); } } void openVideoFile(const char* filename, int fps, int width, int height) { try { videoCapture.open(filename); videoCapture.setFps(fps), videoCapture.setVideoFrameSize(width, height); char title[PATH_MAX]; sprintf(title, "Opened a file=%s - %s", filename, getAppName()); setTitle(title); } catch (Exception& ex) { caught(ex); } } virtual void stopCapture() { closeVideoDevice(); } bool isVideoDeviceOpened() { return videoCapture.isOpened(); } bool readVideoFrame(cv::Mat& frame) { return videoCapture.read(frame); } cv::VideoCapture& getVideoCapture() { return videoCapture.getVideoCapture(); } }; }