Es++ Sample: VideoDeviceEnumerator |
/****************************************************************************** * * 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. * * * VideoCaptureView.cpp * *****************************************************************************/ // #include <es++/gtkmm-3.0/Application.h> #include <es++/gtkmm-3.0/FileOpenDialog.h> #include <es++/gtkmm-3.0/PushButton.h> #include <es++/opencv-4.0/OpenCVScaleComboBox.h> #include <es++/gtkmm-3.0/LabeledVideoDeviceComboBox.h> #include <es++/opencv-4.0/OpenCVVideoCaptureView.h> #include <es++/opencv-4.0/OpenCVScrolledImageView.h> using namespace Gtk; namespace Es { class MainView :public Es::OpenCVVideoCaptureView { private: Es::HorizontalLayout hbox; Es::OpenCVScrolledImageView image_view; Es::VerticalLayout control_pane; Es::OpenCVScaleComboBox scale_combobox; Es::LabeledVideoDeviceComboBox device_combobox; Es::PushButton start_button; Es::PushButton stop_button; int scaling_ratio; public: ////////////////////////////////////////////// //Constructor // MainView(Es::Application& applet, std::string& name, Es::Args& args) :OpenCVVideoCaptureView(applet, name, args) ,scaling_ratio(100) { int w = (int)args.get(XmNwidth); int h = (int)args.get(XmNheight); const int CONTROL_BOX_WIDTH = 240; int ww = (w - CONTROL_BOX_WIDTH); if(args.has(XmNscalingRatio)) { scaling_ratio = (int)args.get(XmNscalingRatio); } Es::MainLayout& main_layout = get_main_layout(); main_layout.pack_start(hbox); image_view.set_size_request(ww, h); control_pane.set_spacing(10); control_pane.set_size_request(CONTROL_BOX_WIDTH, h); hbox.pack_start(image_view); hbox.pack_start(control_pane, Gtk::PACK_SHRINK); control_pane.pack_start(scale_combobox, FALSE, FALSE, 0); control_pane.pack_start(device_combobox, FALSE, FALSE, 0); start_button.set_label("Start Capture"); start_button.set_clicked_callback( sigc::mem_fun(*this, &MainView::start_capture) ); control_pane.pack_start(start_button, FALSE, FALSE, 0); stop_button.set_label("Stop Capture"); stop_button.set_clicked_callback( sigc::mem_fun(*this, &MainView::stop_capture) ); stop_button.disable(); control_pane.pack_start(stop_button, FALSE, FALSE, 0); scale_combobox.set_changed_callback( sigc::mem_fun(*this, &MainView::scale_changed) ); scale_combobox.set_selection(scaling_ratio); device_combobox.set_changed_callback( sigc::mem_fun(*this, &MainView::device_changed) ); show_all(); } void scale_changed() { Glib::ustring text = scale_combobox.get_active_text(); printf("scale_changed: %s\n", text.c_str()); scaling_ratio = scale_combobox.get_selection(); } void device_changed() { Glib::ustring text = device_combobox.get_active_text(); int index = device_combobox.get_selected_index(); printf("device_changed: %s :index=%d\n", text.c_str(), index); set_device_index(index); } void start_capture() { int index = device_combobox.get_selected_index(); printf("start_capture %d\n", index); set_device_index(index); open_video_device(index); start_button.disable(); stop_button.enable(); } void stop_capture() { start_button.enable(); stop_button.disable(); close_video_device(); } virtual bool render() { try { cv::Mat frame; if (read_video_frame(frame)) { image_view.scaleImage(frame, scaling_ratio); } } catch (...) { //Ignore } return true; } }; } int main(int argc, char** argv) { Es::Environment env; try { std::string name = argv[0]; Es::Application applet(argc, argv); Es::Args args; args.set(XmNx, 20); args.set(XmNy, 40); args.set(XmNwidth, 640); args.set(XmNheight, 480); args.set(XmNscalingRatio, 80); args.set(XmNcaptureAutoStart, false); Es::MainView mainv(applet, name, args); mainv.show(); applet.run(mainv); } catch (Es::Exception& ex) { caught(ex); } catch (...) { printf("Get exception \n"); } return 0; }