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k3b/libk3b/jobs/k3bvideodvdtitledetectclipp...

292 lines
8.5 KiB

/*
*
* $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"