File indexing completed on 2024-05-05 04:22:01

 // SPDX-FileCopyrightText: 2012 - 2022 The KPhotoAlbum Development Team
 // SPDX-FileCopyrightText: 2023 Alexander Lohnau <alexander.lohnau@gmx.de>
 //
 // SPDX-License-Identifier: GPL-2.0-only OR GPL-3.0-only OR LicenseRef-KDE-Accepted-GPL
 
 #include "VideoLengthExtractor.h"
 
 #include <MainWindow/FeatureDialog.h>
 #include <Utilities/Process.h>
 #include <kpabase/Logging.h>
 
 #include <QDir>
 
 #define STR(x) QString::fromUtf8(x)
 
 ImageManager::VideoLengthExtractor::VideoLengthExtractor(QObject *parent)
     : QObject(parent)
     , m_process(nullptr)
 {
 }
 
 void ImageManager::VideoLengthExtractor::extract(const DB::FileName &fileName)
 {
     m_fileName = fileName;
     if (m_process) {
         disconnect(m_process, SIGNAL(finished(int)), this, SLOT(processEnded()));
         m_process->kill();
         delete m_process;
         m_process = nullptr;
     }
 
     if (!MainWindow::FeatureDialog::hasVideoThumbnailer()) {
         Q_EMIT unableToDetermineLength();
         return;
     }
 
     m_process = new Utilities::Process(this);
     m_process->setWorkingDirectory(QDir::tempPath());
     connect(m_process, SIGNAL(finished(int)), this, SLOT(processEnded()));
 
     Q_ASSERT(MainWindow::FeatureDialog::hasVideoProber());
     QStringList arguments;
     // Just look at the length of the container. Some videos have streams without duration entry
     arguments << STR("-v") << STR("0") << STR("-show_entries") << STR("format=duration")
               << STR("-of") << STR("default=noprint_wrappers=1:nokey=1")
               << fileName.absolute();
 
     qCDebug(ImageManagerLog, "%s %s", qPrintable(MainWindow::FeatureDialog::ffprobeBinary()), qPrintable(arguments.join(QString::fromLatin1(" "))));
     m_process->start(MainWindow::FeatureDialog::ffprobeBinary(), arguments);
 }
 
 void ImageManager::VideoLengthExtractor::processEnded()
 {
     if (!m_process->stdErr().isEmpty())
         qCDebug(ImageManagerLog) << m_process->stdErr();
 
     const QStringList list = m_process->stdOut().split(QChar::fromLatin1('\n'));
     // ffprobe -v 0 just prints one line, except if panicking
     if (list.count() < 1) {
         qCWarning(ImageManagerLog) << "Unable to parse video length from ffprobe output!"
                                    << "Output was:\n"
                                    << m_process->stdOut();
         Q_EMIT unableToDetermineLength();
         return;
     }
     const QString lenStr = list[0].trimmed();
 
     bool ok = false;
     const double length = lenStr.toDouble(&ok);
     if (!ok) {
         qCWarning(ImageManagerLog) << STR("Unable to convert string \"%1\"to double (for file %2)").arg(lenStr, m_fileName.absolute());
         Q_EMIT unableToDetermineLength();
         return;
     }
 
     if (length == 0) {
         qCWarning(ImageManagerLog) << "video length returned was 0 for file " << m_fileName.absolute();
         Q_EMIT unableToDetermineLength();
         return;
     }
 
     Q_EMIT lengthFound(int(length));
     m_process->deleteLater();
     m_process = nullptr;
 }
 // vi:expandtab:tabstop=4 shiftwidth=4:
 
 #include "moc_VideoLengthExtractor.cpp"