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  - git clone git://gitorious.org/capseo/mainline.git 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  - git clone git://gitorious.org/libcaptury/mainline.git 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  to create a video use "cpsrecode -c theora -i kwin_video.cps -o screen.ogg"
  41  or use mencoder in a similar way as mplayer.
  42
  43 */
  44
  45 #include "videorecord.h"
  46
  47 #include <kaction.h>
  48 #include <kactioncollection.h>
  49 #include <kdebug.h>
  50 #include <klocale.h>
  51 #include <qdir.h>
  52 #include <qfile.h>
  53 #include <kio/netaccess.h>
  54 #include <KConfigGroup>
  55 #include <KGlobalSettings>
  56
  57 #include <strings.h>
  58
  59 namespace KWin
  60 {
  61
  62 KWIN_EFFECT( videorecord, VideoRecordEffect )
  63
  64 VideoRecordEffect::VideoRecordEffect()
  65     : client( NULL )
  66     {
  67     KActionCollection* actionCollection = new KActionCollection( this );
  68     KAction* a = static_cast< KAction* >( actionCollection->addAction( "VideoRecord" ));
  69     a->setText( i18n("Toggle Video Recording" ));
  70     a->setGlobalShortcut( KShortcut( Qt::CTRL + Qt::META + Qt::Key_V ));
  71     connect( a, SIGNAL( triggered( bool )), this, SLOT( toggleRecording()));
  72     area = QRect( 0, 0, displayWidth(), displayHeight());
  73     }
  74
  75 VideoRecordEffect::~VideoRecordEffect()
  76     {
  77     stopRecording();
  78     }
  79
  80 void VideoRecordEffect::paintScreen( int mask, QRegion region, ScreenPaintData& data )
  81     {
  82     effects->paintScreen( mask, region, data );
  83     if( client != NULL )
  84         capture_region = ( mask & ( PAINT_WINDOW_TRANSFORMED | PAINT_SCREEN_TRANSFORMED ))
  85             ? QRect( 0, 0, displayWidth(), displayHeight()) : region;
  86     }
  87
  88 void VideoRecordEffect::postPaintScreen()
  89     {
  90     effects->postPaintScreen();
  91     if( client != NULL )
  92         {
  93 #if 1
  94         if( CapturyProcessRegionStart( client ) == CAPTURY_SUCCESS )
  95             {
  96             capture_region &= QRect( 0, 0, displayWidth(), displayHeight()); // limit to screen
  97             foreach( const QRect &r, capture_region.rects())
  98                 {
  99                 int gly = displayHeight() - r.y() - r.height(); // opengl coords
 100                 CapturyProcessRegion( client, r.x(), gly, r.width(), r.height());
 101                 }
 102             CapturyProcessRegionCommit( client );
 103             }
 104 #else
 105         CapturyProcessFrame( client );
 106 #endif
 107         }
 108     }
 109
 110 void VideoRecordEffect::startRecording()
 111     {
 112     if( client != NULL )
 113         stopRecording();
 114     bzero( &config, sizeof( config ));
 115     config.x = area.x();
 116     config.y = area.y();
 117     config.width = area.width();
 118     config.height = area.height();
 119     config.scale = 0;
 120     config.fps = 30; // TODO
 121     config.deviceType = CAPTURY_DEVICE_GLX; // TODO
 122     config.deviceHandle = display();
 123     config.windowHandle = rootWindow(); // TODO
 124     config.cursor = true;
 125     client = CapturyOpen( &config );
 126     if( client == NULL )
 127         {
 128         kDebug( 1212 ) << "Video recording init failed";
 129         return;
 130         }
 131     KConfigGroup conf = EffectsHandler::effectConfig("VideoRecord");
 132     QString videoPath =conf.readEntry( "videopath", KGlobalSettings::documentPath() );
 133     QString videoName(videoPath +"/kwin_video1.cps" );
 134     while(QFile::exists( videoName )) {
 135         autoincFilename( videoName );
 136     }
 137     if( CapturySetOutputFileName( client, QFile::encodeName( videoName ).constData() ) != CAPTURY_SUCCESS )
 138         {
 139         kDebug( 1212 ) << "Video recording file open failed";
 140         return;
 141         }
 142     effects->addRepaintFull(); // trigger reading initial screen contents into buffer
 143     kDebug( 1212 ) << "Video recording start";
 144     }
 145
 146 void VideoRecordEffect::autoincFilename(QString & name)
 147     {
 148         // If the name contains a number then increment it
 149         QRegExp numSearch( "(^|[^\\d])(\\d+)" ); // we want to match as far left as possible, and when the number is at the start of the name
 150         // Does it have a number?
 151         int start = numSearch.lastIndexIn( name );
 152         if (start != -1) {
 153             // It has a number, increment it
 154             start = numSearch.pos( 2 ); // we are only interested in the second group
 155             QString numAsStr = numSearch.capturedTexts()[ 2 ];
 156             QString number = QString::number( numAsStr.toInt() + 1 );
 157             number = number.rightJustified( numAsStr.length(), '0' );
 158             name.replace( start, number.length(), number );
 159         }
 160     }
 161 void VideoRecordEffect::stopRecording()
 162     {
 163     if( client == NULL )
 164         return;
 165     kDebug( 1212 ) << "Video recording stop";
 166     CapturyClose( client );
 167     client = NULL;
 168     }
 169
 170 void VideoRecordEffect::toggleRecording()
 171     {
 172     if( client == NULL )
 173         startRecording();
 174     else
 175         stopRecording();
 176     }
 177
 178 } // namespace
 179
 180 #include "videorecord.moc"