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-rw-r--r--libk3b/jobs/k3bvideodvdtitledetectclippingjob.cpp291
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diff --git a/libk3b/jobs/k3bvideodvdtitledetectclippingjob.cpp b/libk3b/jobs/k3bvideodvdtitledetectclippingjob.cpp
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+++ b/libk3b/jobs/k3bvideodvdtitledetectclippingjob.cpp
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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 "k3bvideodvdtitledetectclippingjob.h"
+
+#include <k3bexternalbinmanager.h>
+#include <k3bprocess.h>
+#include <k3bcore.h>
+#include <k3bglobals.h>
+
+#include <klocale.h>
+#include <kdebug.h>
+
+
+static const int s_unrealisticHighClippingValue = 100000;
+
+
+class K3bVideoDVDTitleDetectClippingJob::Private
+{
+public:
+ const K3bExternalBin* usedTranscodeBin;
+
+ K3bProcess* process;
+
+ bool canceled;
+
+ unsigned int currentChapter;
+ unsigned int currentFrames;
+ unsigned int totalChapters;
+
+ int lastProgress;
+ int lastSubProgress;
+};
+
+
+
+K3bVideoDVDTitleDetectClippingJob::K3bVideoDVDTitleDetectClippingJob( K3bJobHandler* hdl, QObject* parent )
+ : K3bJob( hdl, parent ),
+ m_clippingTop( 0 ),
+ m_clippingBottom( 0 ),
+ m_clippingLeft( 0 ),
+ m_clippingRight( 0 ),
+ m_lowPriority( true )
+{
+ d = new Private;
+ d->process = 0;
+}
+
+
+K3bVideoDVDTitleDetectClippingJob::~K3bVideoDVDTitleDetectClippingJob()
+{
+ delete d->process;
+ delete d;
+}
+
+
+void K3bVideoDVDTitleDetectClippingJob::start()
+{
+ jobStarted();
+
+ d->canceled = false;
+ d->lastProgress = 0;
+
+ //
+ // It seems as if the last chapter is often way too short
+ //
+ d->totalChapters = m_dvd[m_titleNumber-1].numPTTs();
+ if( d->totalChapters > 1 && m_dvd[m_titleNumber-1][d->totalChapters-1].playbackTime().totalFrames() < 200 )
+ d->totalChapters--;
+
+ // initial values (some way to big value)
+ m_clippingTop = s_unrealisticHighClippingValue;
+ m_clippingBottom = s_unrealisticHighClippingValue;
+ m_clippingLeft = s_unrealisticHighClippingValue;
+ m_clippingRight = s_unrealisticHighClippingValue;
+
+ d->usedTranscodeBin = k3bcore->externalBinManager()->binObject("transcode");
+ if( !d->usedTranscodeBin ) {
+ emit infoMessage( i18n("%1 executable could not be found.").arg("transcode"), ERROR );
+ jobFinished( false );
+ return;
+ }
+
+ if( d->usedTranscodeBin->version < K3bVersion( 1, 0, 0 ) ){
+ emit infoMessage( i18n("%1 version %2 is too old.")
+ .arg("transcode")
+ .arg(d->usedTranscodeBin->version), ERROR );
+ jobFinished( false );
+ return;
+ }
+
+ emit debuggingOutput( "Used versions", "transcode: " + d->usedTranscodeBin->version );
+
+ if( !d->usedTranscodeBin->copyright.isEmpty() )
+ emit infoMessage( i18n("Using %1 %2 - Copyright (C) %3")
+ .arg(d->usedTranscodeBin->name())
+ .arg(d->usedTranscodeBin->version)
+ .arg(d->usedTranscodeBin->copyright), INFO );
+
+ emit newTask( i18n("Analysing Title %1 of Video DVD %2").arg(m_titleNumber).arg(m_dvd.volumeIdentifier()) );
+
+ startTranscode( 1 );
+}
+
+
+void K3bVideoDVDTitleDetectClippingJob::startTranscode( int chapter )
+{
+ d->currentChapter = chapter;
+ d->lastSubProgress = 0;
+
+ //
+ // If we have only one chapter and it is not longer than 2 minutes (value guessed based on some test DVD)
+ // use the whole chapter
+ //
+ if( d->totalChapters == 1 )
+ d->currentFrames = QMIN( 3000, QMAX( 1, m_dvd[m_titleNumber-1][d->currentChapter-1].playbackTime().totalFrames() ) );
+ else
+ d->currentFrames = QMIN( 200, QMAX( 1, m_dvd[m_titleNumber-1][d->currentChapter-1].playbackTime().totalFrames() ) );
+
+ //
+ // prepare the process
+ //
+ delete d->process;
+ d->process = new K3bProcess();
+ d->process->setSuppressEmptyLines(true);
+ d->process->setSplitStdout(true);
+ // connect( d->process, SIGNAL(stderrLine(const QString&)), this, SLOT(slotTranscodeStderr(const QString&)) );
+ connect( d->process, SIGNAL(stdoutLine(const QString&)), this, SLOT(slotTranscodeStderr(const QString&)) );
+ connect( d->process, SIGNAL(processExited(KProcess*)), this, SLOT(slotTranscodeExited(KProcess*)) );
+
+ // the executable
+ *d->process << d->usedTranscodeBin;
+
+ // low priority
+ if( m_lowPriority )
+ *d->process << "--nice" << "19";
+
+ // the input
+ *d->process << "-i" << m_dvd.device()->blockDeviceName();
+
+ // select the title number and chapter
+ *d->process << "-T" << QString("%1,%2").arg(m_titleNumber).arg(chapter);
+
+ // null output
+ *d->process << "-y" << "null,null" << "-o" << "/dev/null";
+
+ // analyze the first 200 frames
+ *d->process << "-J" << QString("detectclipping=range=0-%1/5").arg(d->currentFrames);
+
+ // also only decode the first 200 frames
+ *d->process << "-c" << QString("0-%1").arg(d->currentFrames+1);
+
+ // additional user parameters from config
+ const QStringList& params = d->usedTranscodeBin->userParameters();
+ for( QStringList::const_iterator it = params.begin(); it != params.end(); ++it )
+ *d->process << *it;
+
+ // produce some debugging output
+ kdDebug() << "***** transcode parameters:\n";
+ const QValueList<QCString>& args = d->process->args();
+ QString s;
+ for( QValueList<QCString>::const_iterator it = args.begin(); it != args.end(); ++it ) {
+ s += *it + " ";
+ }
+ kdDebug() << s << flush << endl;
+ emit debuggingOutput( d->usedTranscodeBin->name() + " command:", s);
+
+ // start the process
+ if( !d->process->start( KProcess::NotifyOnExit, KProcess::All ) ) {
+ // something went wrong when starting the program
+ // it "should" be the executable
+ emit infoMessage( i18n("Could not start %1.").arg(d->usedTranscodeBin->name()), K3bJob::ERROR );
+ jobFinished(false);
+ }
+ else {
+ emit newSubTask( i18n("Analysing Chapter %1 of %2").arg(chapter).arg(m_dvd[m_titleNumber-1].numPTTs()) );
+ emit subPercent( 0 );
+ }
+}
+
+
+void K3bVideoDVDTitleDetectClippingJob::cancel()
+{
+ d->canceled = true;
+ if( d->process && d->process->isRunning() )
+ d->process->kill();
+}
+
+
+void K3bVideoDVDTitleDetectClippingJob::slotTranscodeStderr( const QString& line )
+{
+ emit debuggingOutput( "transcode", line );
+
+ // parse progress
+ // encoding frame [185], 24.02 fps, 93.0%, ETA: 0:00:00, ( 0| 0| 0)
+ if( line.startsWith( "encoding frame" ) ) {
+ int pos1 = line.find( '[', 15 );
+ int pos2 = line.find( ']', pos1+1 );
+ if( pos1 > 0 && pos2 > 0 ) {
+ bool ok;
+ int encodedFrames = line.mid( pos1+1, pos2-pos1-1 ).toInt( &ok );
+ if( ok ) {
+ int progress = 100 * encodedFrames / d->currentFrames;
+
+ if( progress > d->lastSubProgress ) {
+ d->lastSubProgress = progress;
+ emit subPercent( progress );
+ }
+
+ double part = 100.0 / (double)d->totalChapters;
+
+ progress = (int)( ( (double)(d->currentChapter-1) * part )
+ + ( (double)progress / (double)d->totalChapters )
+ + 0.5 );
+
+ if( progress > d->lastProgress ) {
+ d->lastProgress = progress;
+ emit percent( progress );
+ }
+ }
+ }
+ }
+
+ // [detectclipping#0] valid area: X: 5..719 Y: 72..507 -> -j 72,6,68,0
+ else if( line.startsWith( "[detectclipping" ) ) {
+ int pos = line.find( "-j" );
+ if( pos > 0 ) {
+ QStringList values = QStringList::split( ',', line.mid( pos+3 ) );
+ m_clippingTop = QMIN( m_clippingTop, values[0].toInt() );
+ m_clippingLeft = QMIN( m_clippingLeft, values[1].toInt() );
+ m_clippingBottom = QMIN( m_clippingBottom, values[2].toInt() );
+ m_clippingRight = QMIN( m_clippingRight, values[3].toInt() );
+ }
+ else
+ kdDebug() << "(K3bVideoDVDTitleDetectClippingJob) failed to parse line: " << line << endl;
+ }
+}
+
+
+void K3bVideoDVDTitleDetectClippingJob::slotTranscodeExited( KProcess* p )
+{
+ switch( p->exitStatus() ) {
+ case 0:
+ d->currentChapter++;
+ if( d->currentChapter > d->totalChapters ) {
+ //
+ // check if we did set any values at all
+ //
+ if( m_clippingTop == s_unrealisticHighClippingValue )
+ m_clippingTop = m_clippingLeft = m_clippingBottom = m_clippingRight = 0;
+
+ if( d->totalChapters < m_dvd[m_titleNumber-1].numPTTs() )
+ emit infoMessage( i18n("Ignoring last chapter due to its short playback time."), INFO );
+
+ jobFinished( true );
+ }
+ else {
+ startTranscode( d->currentChapter );
+ }
+ break;
+
+ default:
+ // FIXME: error handling
+
+ if( d->canceled ) {
+ emit canceled();
+ }
+ else {
+ emit infoMessage( i18n("%1 returned an unknown error (code %2).")
+ .arg(d->usedTranscodeBin->name()).arg(p->exitStatus()),
+ K3bJob::ERROR );
+ emit infoMessage( i18n("Please send me an email with the last output."), K3bJob::ERROR );
+ }
+
+ jobFinished( false );
+ }
+}
+
+#include "k3bvideodvdtitledetectclippingjob.moc"
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