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// Copyright (C) 2010 Dirk Vanden Boer <dirk.vdb@gmail.com>
//
// 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.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#include "kffmpegthumbnailer.h"
#include "kffmpegthumbnailersettings5.h"
#include <limits>
#include <QImage>
#include <QCheckBox>
#include <QFormLayout>
#include <QRegExpValidator>
#include <QWidget>
extern "C"
{
Q_DECL_EXPORT ThumbCreator *new_creator()
{
return new KFFMpegThumbnailer();
}
}
KFFMpegThumbnailer::KFFMpegThumbnailer()
{
thumbCache.setMaxCost(KFFMpegThumbnailerSettings::cacheSize());
}
KFFMpegThumbnailer::~KFFMpegThumbnailer()
{
}
bool KFFMpegThumbnailer::create(const QString& path, int width, int /*height*/, QImage& img)
{
int seqIdx = static_cast<int>(sequenceIndex());
const QList<int> seekPercentages = KFFMpegThumbnailerSettings::sequenceSeekPercentages();
const int numSeekPercentages = seekPercentages.size();
seqIdx %= numSeekPercentages;
const QString cacheKey = QString("%1$%2@%3").arg(path).arg(seqIdx).arg(width);
QImage* cachedImg = thumbCache[cacheKey];
if (cachedImg) {
img = *cachedImg;
return true;
}
try
{
std::vector<uint8_t> pixelBuffer;
KFFMpegThumbnailerSettings* settings = KFFMpegThumbnailerSettings::self();
settings->load();
if (settings->addFilmstrip())
{
m_Thumbnailer.addFilter(&m_FilmStrip);
}
else
{
m_Thumbnailer.clearFilters();
}
m_Thumbnailer.setPreferEmbeddedMetadata(settings->useMetadataCovers());
m_Thumbnailer.setSmartFrameSelection(settings->useSmartSelection());
m_Thumbnailer.setSeekPercentage(seekPercentages[seqIdx]);
m_Thumbnailer.setThumbnailSize(width);
m_Thumbnailer.generateThumbnail(std::string(path.toUtf8()), Png, pixelBuffer);
if (!img.loadFromData(&pixelBuffer.front(), pixelBuffer.size(), "PNG"))
{
return false;
}
}
catch (std::exception& e)
{
return false;
}
const int cacheCost = static_cast<int>((img.sizeInBytes()+1023) / 1024);
thumbCache.insert(cacheKey, new QImage(img), cacheCost);
return true;
}
float KFFMpegThumbnailer::sequenceIndexWraparoundPoint() const
{
return static_cast<float>(KFFMpegThumbnailerSettings::sequenceSeekPercentages().size());
}
ThumbCreator::Flags KFFMpegThumbnailer::flags() const
{
return static_cast<Flags>(None);
}
QWidget *KFFMpegThumbnailer::createConfigurationWidget()
{
QWidget* widget = new QWidget();
QFormLayout* formLayout = new QFormLayout(widget);
m_addFilmStripCheckBox = new QCheckBox("Embed filmstrip effect");
m_addFilmStripCheckBox->setChecked(KFFMpegThumbnailerSettings::addFilmstrip());
formLayout->addRow(m_addFilmStripCheckBox);
m_useMetadataCheckBox = new QCheckBox("Use metadata embedded cover pictures");
m_useMetadataCheckBox->setChecked(KFFMpegThumbnailerSettings::useMetadataCovers());
formLayout->addRow(m_useMetadataCheckBox);
m_useSmartSelectionCheckBox = new QCheckBox("Use smart (slower) frame selection");
m_useSmartSelectionCheckBox->setChecked(KFFMpegThumbnailerSettings::useSmartSelection());
formLayout->addRow(m_useSmartSelectionCheckBox);
QString seekPercentagesStr;
for (const int sp : KFFMpegThumbnailerSettings::sequenceSeekPercentages()) {
if (!seekPercentagesStr.isEmpty()) {
seekPercentagesStr.append(' ');
}
seekPercentagesStr.append(QString().setNum(sp));
}
m_sequenceSeekPercentagesLineEdit = new QLineEdit();
m_sequenceSeekPercentagesLineEdit->setText(seekPercentagesStr);
formLayout->addRow("Sequence seek percentages", m_sequenceSeekPercentagesLineEdit);
m_thumbCacheSizeSpinBox = new QSpinBox();
m_thumbCacheSizeSpinBox->setRange(0, std::numeric_limits<int>::max());
m_thumbCacheSizeSpinBox->setValue(KFFMpegThumbnailerSettings::cacheSize());
formLayout->addRow("Cache size (KiB)", m_thumbCacheSizeSpinBox);
return widget;
}
void KFFMpegThumbnailer::writeConfiguration(const QWidget* /*configurationWidget*/)
{
KFFMpegThumbnailerSettings* settings = KFFMpegThumbnailerSettings::self();
settings->setAddFilmstrip(m_addFilmStripCheckBox->isChecked());
settings->setUseMetadataCovers(m_useMetadataCheckBox->isChecked());
settings->setUseSmartSelection(m_useSmartSelectionCheckBox->isChecked());
const QStringList seekPercentagesStrList = m_sequenceSeekPercentagesLineEdit->text()
.split(QRegExp("(\\s*,\\s*)|\\s+"), Qt::SkipEmptyParts);
QList<int> seekPercentages;
bool seekPercentagesValid = true;
for (const QString str : seekPercentagesStrList) {
const int sp = str.toInt(&seekPercentagesValid);
if (!seekPercentagesValid) {
break;
}
seekPercentages << sp;
}
if (seekPercentagesValid) {
settings->setSequenceSeekPercentages(seekPercentages);
}
settings->setCacheSize(m_thumbCacheSizeSpinBox->value());
thumbCache.setMaxCost(m_thumbCacheSizeSpinBox->value());
settings->save();
}
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