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