QtDisplayStream4.H

00001 /*!@file GUI/QtDisplayStream.H FrameOstream subclass that displays images in a QWidgetStack */
00002 
00003 // //////////////////////////////////////////////////////////////////// //
00004 // The iLab Neuromorphic Vision C++ Toolkit - Copyright (C) 2000-2005   //
00005 // by the University of Southern California (USC) and the iLab at USC.  //
00006 // See http://iLab.usc.edu for information about this project.          //
00007 // //////////////////////////////////////////////////////////////////// //
00008 // Major portions of the iLab Neuromorphic Vision Toolkit are protected //
00009 // under the U.S. patent ``Computation of Intrinsic Perceptual Saliency //
00010 // in Visual Environments, and Applications'' by Christof Koch and      //
00011 // Laurent Itti, California Institute of Technology, 2001 (patent       //
00012 // pending; application number 09/912,225 filed July 23, 2001; see      //
00013 // http://pair.uspto.gov/cgi-bin/final/home.pl for current status).     //
00014 // //////////////////////////////////////////////////////////////////// //
00015 // This file is part of the iLab Neuromorphic Vision C++ Toolkit.       //
00016 //                                                                      //
00017 // The iLab Neuromorphic Vision C++ Toolkit is free software; you can   //
00018 // redistribute it and/or modify it under the terms of the GNU General  //
00019 // Public License as published by the Free Software Foundation; either  //
00020 // version 2 of the License, or (at your option) any later version.     //
00021 //                                                                      //
00022 // The iLab Neuromorphic Vision C++ Toolkit is distributed in the hope  //
00023 // that it will be useful, but WITHOUT ANY WARRANTY; without even the   //
00024 // implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR      //
00025 // PURPOSE.  See the GNU General Public License for more details.       //
00026 //                                                                      //
00027 // You should have received a copy of the GNU General Public License    //
00028 // along with the iLab Neuromorphic Vision C++ Toolkit; if not, write   //
00029 // to the Free Software Foundation, Inc., 59 Temple Place, Suite 330,   //
00030 // Boston, MA 02111-1307 USA.                                           //
00031 // //////////////////////////////////////////////////////////////////// //
00032 //
00033 // Primary maintainer for this file: Rob Peters <rjpeters at usc dot edu>
00034 // $HeadURL: svn://isvn.usc.edu/software/invt/trunk/saliency/src/GUI/QtDisplayStream4.H $
00035 // $Id: QtDisplayStream4.H 12962 2010-03-06 02:13:53Z irock $
00036 //
00037 
00038 #ifndef GUI_QTDISPLAYSTREAM4_H_DEFINED
00039 #define GUI_QTDISPLAYSTREAM4_H_DEFINED
00040 
00041 #include "Component/ModelParam.H"
00042 #include "Image/Dims.H"
00043 #include "Transport/FrameOstream.H"
00044 
00045 #include <QtGui/QApplication>
00046 
00047 class QtImageStack;
00048 class EventFilt;
00049 
00050 //! FrameOstream subclass that displays images in a QImageStack
00051 class QtDisplayStream : public FrameOstream
00052 {
00053 public:
00054   QtDisplayStream(OptionManager& mgr,
00055                   const std::string& descrName = "QtDisplayStream",
00056                   const std::string& tagName = "QtDisplayStream");
00057 
00058   virtual ~QtDisplayStream();
00059 
00060   //! Override the base version so that we can trap --qt-echo options
00061   virtual void paramChanged(ModelParamBase* const param,
00062                             const bool valueChanged,
00063                             ParamClient::ChangeStatus* status);
00064 
00065   virtual bool setFrameNumber(int n);
00066 
00067   virtual void writeFrame(const GenericFrame& frame,
00068                           const std::string& shortname,
00069                           const FrameInfo& auxinfo);
00070 
00071   //! Returns true if the user has clicked the close button
00072   virtual bool isVoid() const;
00073 
00074   virtual void closeStream(const std::string& shortname);
00075 
00076   //! Returns true if the user has clicked the close button
00077   bool isClosed() const;
00078 
00079   //! Run our QApplication in a thread
00080   void* run();
00081 
00082 protected:
00083   friend class EventFilt;
00084 
00085   //!< get started
00086   virtual void start1();
00087 
00088   //! catch --in-echo command-line options
00089   OModelParam<std::string> itsQtEcho;
00090 
00091   OModelParam<Dims> itsPreferredDims;
00092   OModelParam<Dims> itsPreferredMaxDims;
00093 
00094   OModelParam<bool> itsTestMode;
00095 
00096 private:
00097   QtImageStack* itsWidget;
00098   EventFilt *itsFilter;
00099   bool itsShown;
00100   int itsFrameNumber;
00101 
00102   nub::soft_ref<FrameOstream> itsEcho;
00103   bool itsReady;
00104 
00105   pthread_t runner;
00106 };
00107 
00108 // ######################################################################
00109 /* So things look consistent in everyone's emacs... */
00110 /* Local Variables: */
00111 /* mode: c++ */
00112 /* indent-tabs-mode: nil */
00113 /* End: */
00114 
00115 #endif // GUI_QTDISPLAYSTREAM4_H_DEFINED
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