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136 lines
3.6 KiB
136 lines
3.6 KiB
/*
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*
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* $Id: sourceheader 511311 2006-02-19 14:51:05Z trueg $
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* Copyright (C) 2006 Sebastian Trueg <trueg@k3b.org>
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*
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* This file is part of the K3b project.
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* Copyright (C) 1998-2007 Sebastian Trueg <trueg@k3b.org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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* See the file "COPYING" for the exact licensing terms.
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*/
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#include "k3bvideodvdrippingpreview.h"
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#include <k3bcore.h>
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#include <k3bexternalbinmanager.h>
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#include <k3bdevice.h>
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#include <kprocess.h>
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#include <ktempdir.h>
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#include <kdebug.h>
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#include <tqdir.h>
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K3bVideoDVDRippingPreview::K3bVideoDVDRippingPreview( TQObject* parent )
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: TQObject( parent ),
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m_tempDir( 0 ),
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m_process( 0 )
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{
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}
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K3bVideoDVDRippingPreview::~K3bVideoDVDRippingPreview()
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{
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delete m_process;
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delete m_tempDir;
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}
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void K3bVideoDVDRippingPreview::generatePreview( const K3bVideoDVD::VideoDVD& dvd, int title, int chapter )
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{
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// cleanup first
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delete m_process;
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delete m_tempDir;
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m_process = 0;
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m_tempDir = 0;
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m_canceled = false;
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const K3bExternalBin* bin = k3bcore->externalBinManager()->binObject("transcode");
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if( !bin ) {
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emit previewDone( false );
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return;
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}
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// auto-select a chapter
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// choose the center chapter, but not the first or last if possible
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if( chapter == 0 )
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chapter = TQMIN( TQMAX( dvd[title-1].numChapters()/2, 2 ), TQMAX( dvd[title-1].numChapters() - 1, 1 ) );
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// select a frame number
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unsigned int frame = 30;
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if( dvd[title-1][chapter-1].playbackTime().totalFrames() < frame )
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frame = dvd[title-1][chapter-1].playbackTime().totalFrames() / 2;
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m_dvd = dvd;
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m_title = title;
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m_chapter = chapter;
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m_tempDir = new KTempDir();
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m_tempDir->setAutoDelete( true );
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m_process = new TDEProcess();
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*m_process << bin->path;
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*m_process << "-i" << dvd.device()->blockDeviceName();
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*m_process << "-T" << TQString("%1,%2").arg(title).arg(chapter);
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*m_process << "-x" << "dvd,null";
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*m_process << "--dvd_access_delay" << "0";
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*m_process << "-y" << "ppm,null";
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*m_process << "-c" << TQString("%1-%2").arg( frame ).arg( frame+1 );
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*m_process << "-Z" << "x200";
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*m_process << "-o" << m_tempDir->name();
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connect( m_process, TQT_SIGNAL(processExited(TDEProcess*)),
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this, TQT_SLOT(slotTranscodeFinished(TDEProcess*)) );
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if( !m_process->start( TDEProcess::NotifyOnExit, TDEProcess::AllOutput ) ) { // we use AllOutput to not pollute stdout
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// something went wrong when starting the program
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// it "should" be the executable
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kdDebug() << "(K3bVideoDVDRippingPreview) Could not start transcode." << endl;
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delete m_process;
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delete m_tempDir;
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m_process = 0;
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m_tempDir = 0;
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emit previewDone( false );
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}
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}
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void K3bVideoDVDRippingPreview::cancel()
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{
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if( m_process && m_process->isRunning() ) {
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m_canceled = true;
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m_process->kill();
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}
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}
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void K3bVideoDVDRippingPreview::slotTranscodeFinished( TDEProcess* )
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{
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// read the image
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TQString filename = m_tempDir->name() + "000000.ppm";// + tempTQDir->entryList( TQDir::Files ).first();
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kdDebug() << "(K3bVideoDVDRippingPreview) reading from file " << filename << endl;
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m_preview = TQImage( filename );
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bool success = !m_preview.isNull() && !m_canceled;
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// remove temp files
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delete m_tempDir;
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m_tempDir = 0;
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// clean up
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delete m_process;
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m_process = 0;
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// retry the first chapter in case another failed
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if( !success && m_chapter > 1 )
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generatePreview( m_dvd, m_title, 1 );
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else
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emit previewDone( success );
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}
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#include "k3bvideodvdrippingpreview.moc"
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