QVision: Qt's Image, Video and Computer Vision Library

00001 /*
00002  *      Copyright (C) 2007, 2008, 2009, 2010, 2011, 2012. PARP Research Group.
00003  *      <http://perception.inf.um.es>
00004  *      University of Murcia, Spain.
00005  *
00006  *      This file is part of the QVision library.
00007  *
00008  *      QVision is free software: you can redistribute it and/or modify
00009  *      it under the terms of the GNU Lesser General Public License as
00010  *      published by the Free Software Foundation, version 3 of the License.
00011  *
00012  *      QVision is distributed in the hope that it will be useful,
00013  *      but WITHOUT ANY WARRANTY; without even the implied warranty of
00014  *      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00015  *      GNU Lesser General Public License for more details.
00016  *
00017  *      You should have received a copy of the GNU Lesser General Public
00018  *      License along with QVision. If not, see <http://www.gnu.org/licenses/>.
00019  */
00020 
00051 #include <QVApplication>
00052 #include <QVDefaultGUI>
00053 #include <QVImageCanvas>
00054 #include <QVVideoReaderBlock>
00055 #include <qvip.h>
00056 //#include <QVYUV4MPEG2WriterBlock>
00057 
00058 #ifndef DOXYGEN_IGNORE_THIS
00059 class PlayerBlock: public QVProcessingBlock
00060     {
00061         int frameNumber;
00062         QVImage<uChar, 3> actualImage;
00063     public:
00064         PlayerBlock(QString name): QVProcessingBlock(name),
00065                         frameNumber(0)
00066             {
00067             addProperty< QVImage<uChar,3> >("RGB image", inputFlag|outputFlag);
00068             addProperty< QVImage<uChar> >("Y image", inputFlag|outputFlag);
00069             addProperty< QVImage<uChar> >("U image", inputFlag|outputFlag);
00070             addProperty< QVImage<uChar> >("V image", inputFlag|outputFlag);
00071             addProperty< QVImage<uChar> >("R image", inputFlag|outputFlag);
00072             addProperty< QVImage<uChar> >("G image", inputFlag|outputFlag);
00073             addProperty< QVImage<uChar> >("B image", inputFlag|outputFlag);
00074             addProperty<int>("ColorRGBYUV", inputFlag|guiInvisible, 1,
00075                              "Show Color (1), RGB separated (2) or YUV separated (3)",1,3);
00076 
00077                         addTrigger("Store frame");
00078             }
00079 
00080                 void processTrigger(const QString triggerName)
00081                         {
00082                         const QString fileName = QString("frame_") +    QString::number(frameNumber++).rightJustified(6, '0') + QString(".png");
00083                         std::cout << "Storing frame in file " << qPrintable(fileName) << std::endl;
00084                         writeQVImageToFile(fileName, actualImage);
00085                         }
00086 
00087         void iterate()
00088                         {
00089                         actualImage = getPropertyValue< QVImage<uChar, 3> >("RGB image");
00090                         }
00091     };
00092 
00093 int main(int argc, char *argv[])
00094 {
00095     QVApplication app(argc, argv, "Example program for QVision library. Displays the contents of a video source.");
00096 
00097     QVVideoReaderBlock camera("Video");
00098     PlayerBlock player("Video player");
00099     QVDefaultGUI interface;
00100 
00101     // QVYUV4MPEG2WriterBlock recorder("Video recorder");
00102     // player.linkProperty("RGB image", recorder, QVProcessingBlock::SynchronousLink);
00103 
00104     if(player.getPropertyValue<int>("ColorRGBYUV") == 1) {
00105         QVImageCanvas canvasRGB("RGB image");
00106         camera.linkProperty(&player,"RGB image");
00107         player.linkProperty("RGB image",canvasRGB);
00108         return app.exec();
00109     } else if(player.getPropertyValue<int>("ColorRGBYUV") == 2) {
00110         QVImageCanvas canvasR("R image"), canvasG("G image"), canvasB("B image");
00111         camera.linkProperty(&player,"R image","G image","B image",true);
00112         player.linkProperty("R image",canvasR);
00113         player.linkProperty("G image",canvasG);
00114         player.linkProperty("B image",canvasB);
00115         return app.exec();
00116     } else if(player.getPropertyValue<int>("ColorRGBYUV") == 3) {
00117         QVImageCanvas canvasY("Y image"), canvasU("U image"), canvasV("V image");
00118         camera.linkProperty(&player,"Y image","U image","V image");
00119         player.linkProperty("Y image",canvasY);
00120         player.linkProperty("U image",canvasU);
00121         player.linkProperty("V image",canvasV);
00122         return app.exec();
00123     } else {
00124         // Show error message and exit (app.exec() will do it):
00125         return app.exec();
00126     }
00127 }
00128 #endif
00129
examples/videoPlayer/videoPlayer.cpp
