workspace/kwin/effects/videorecord.cpp

   1 /********************************************************************
   2  KWin - the KDE window manager
   3  This file is part of the KDE project.
   4
   5 Copyright (C) 2006 Lubos Lunak <l.lunak@kde.org>
   6
   7 This program is free software; you can redistribute it and/or modify
   8 it under the terms of the GNU General Public License as published by
   9 the Free Software Foundation; either version 2 of the License, or
  10 (at your option) any later version.
  11
  12 This program is distributed in the hope that it will be useful,
  13 but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 GNU General Public License for more details.
  16
  17 You should have received a copy of the GNU General Public License
  18 along with this program.  If not, see <http://www.gnu.org/licenses/>.
  19 *********************************************************************/
  20
  21 /*
  22
  23  This effect allows recording a video from the session.
  24
  25  Requires libcaptury:
  26
  27  - svn co svn://77.74.232.49/captury/trunk/capseo
  28  - you may want to remove 1.10 from AUTOMAKE_OPTIONS in Makefile.am
  29  - ./autogen.sh
  30  - the usual configure && make && make install procedure
  31    (you may want to pass --enable-theora --with-accel=x86 [or amd64])
  32
  33  - svn co svn://77.74.232.49/captury/trunk/libcaptury
  34  - you may want to remove 1.10 from AUTOMAKE_OPTIONS in Makefile.am
  35  - ./autogen.sh
  36  - the usual configure && make && make install procedure
  37
  38  Video is saved to $HOME/kwin_video.cps, use
  39  "cpsrecode -i kwin_video.cps  -o - | mplayer -" to play,
  40  use mencoder the same way to create a video.
  41
  42 */
  43
  44 #include "videorecord.h"
  45
  46 #include <kaction.h>
  47 #include <kactioncollection.h>
  48 #include <kdebug.h>
  49 #include <klocale.h>
  50 #include <qdir.h>
  51 #include <qfile.h>
  52 #include <kio/netaccess.h>
  53 #include <KConfigGroup>
  54 #include <KGlobalSettings>
  55
  56 namespace KWin
  57 {
  58
  59 KWIN_EFFECT( videorecord, VideoRecordEffect )
  60
  61 VideoRecordEffect::VideoRecordEffect()
  62     : client( NULL )
  63     {
  64     KActionCollection* actionCollection = new KActionCollection( this );
  65     KAction* a = static_cast< KAction* >( actionCollection->addAction( "VideoRecord" ));
  66     a->setText( i18n("Toggle Video Recording" ));
  67     a->setGlobalShortcut( KShortcut( Qt::CTRL + Qt::META + Qt::Key_V ));
  68     connect( a, SIGNAL( triggered( bool )), this, SLOT( toggleRecording()));
  69     area = QRect( 0, 0, displayWidth(), displayHeight());
  70     }
  71
  72 VideoRecordEffect::~VideoRecordEffect()
  73     {
  74     stopRecording();
  75     }
  76
  77 void VideoRecordEffect::paintScreen( int mask, QRegion region, ScreenPaintData& data )
  78     {
  79     effects->paintScreen( mask, region, data );
  80     if( client != NULL )
  81         capture_region = ( mask & ( PAINT_WINDOW_TRANSFORMED | PAINT_SCREEN_TRANSFORMED ))
  82             ? QRect( 0, 0, displayWidth(), displayHeight()) : region;
  83     }
  84
  85 void VideoRecordEffect::postPaintScreen()
  86     {
  87     effects->postPaintScreen();
  88     if( client != NULL )
  89         {
  90 #if 1
  91         if( CapturyProcessRegionStart( client ) == CAPTURY_SUCCESS )
  92             {
  93             capture_region &= QRect( 0, 0, displayWidth(), displayHeight()); // limit to screen
  94             foreach( QRect r, capture_region.rects())
  95                 {
  96                 int gly = displayHeight() - r.y() - r.height(); // opengl coords
  97                 CapturyProcessRegion( client, r.x(), gly, r.width(), r.height());
  98                 }
  99             CapturyProcessRegionCommit( client );
 100             }
 101 #else
 102         CapturyProcessFrame( client );
 103 #endif
 104         }
 105     }
 106
 107 void VideoRecordEffect::startRecording()
 108     {
 109     if( client != NULL )
 110         stopRecording();
 111     bzero( &config, sizeof( config ));
 112     config.x = area.x();
 113     config.y = area.y();
 114     config.width = area.width();
 115     config.height = area.height();
 116     config.scale = 0;
 117     config.fps = 30; // TODO
 118     config.deviceType = CAPTURY_DEVICE_GLX; // TODO
 119     config.deviceHandle = display();
 120     config.windowHandle = rootWindow(); // TODO
 121     config.cursor = true;
 122     client = CapturyOpen( &config );
 123     if( client == NULL )
 124         {
 125         kDebug( 1212 ) << "Video recording init failed";
 126         return;
 127         }
 128     KConfigGroup conf = EffectsHandler::effectConfig("VideoRecord");
 129     QString videoPath =conf.readEntry( "videopath", KGlobalSettings::documentPath() );
 130     QString videoName(videoPath +"/kwin_video1.cps" );
 131     while(QFile::exists( videoName )) {
 132         autoincFilename( videoName );
 133     }
 134     if( CapturySetOutputFileName( client, QFile::encodeName( videoName ).constData() ) != CAPTURY_SUCCESS )
 135         {
 136         kDebug( 1212 ) << "Video recording file open failed";
 137         return;
 138         }
 139     effects->addRepaintFull(); // trigger reading initial screen contents into buffer
 140     kDebug( 1212 ) << "Video recording start";
 141     }
 142
 143 void VideoRecordEffect::autoincFilename(QString & name)
 144     {
 145         // If the name contains a number then increment it
 146         QRegExp numSearch( "(^|[^\\d])(\\d+)" ); // we want to match as far left as possible, and when the number is at the start of the name
 147         // Does it have a number?
 148         int start = numSearch.lastIndexIn( name );
 149         if (start != -1) {
 150             // It has a number, increment it
 151             start = numSearch.pos( 2 ); // we are only interested in the second group
 152             QString numAsStr = numSearch.capturedTexts()[ 2 ];
 153             QString number = QString::number( numAsStr.toInt() + 1 );
 154             number = number.rightJustified( numAsStr.length(), '0' );
 155             name.replace( start, number.length(), number );
 156         }
 157     }
 158 void VideoRecordEffect::stopRecording()
 159     {
 160     if( client == NULL )
 161         return;
 162     kDebug( 1212 ) << "Video recording stop";
 163     CapturyClose( client );
 164     client = NULL;
 165     }
 166
 167 void VideoRecordEffect::toggleRecording()
 168     {
 169     if( client == NULL )
 170         startRecording();
 171     else
 172         stopRecording();
 173     }
 174
 175 } // namespace
 176
 177 #include "videorecord.moc"