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Diffstat (limited to 'src/videopreview/videopreview.cpp')
| -rw-r--r-- | src/videopreview/videopreview.cpp | 648 |
1 files changed, 648 insertions, 0 deletions
diff --git a/src/videopreview/videopreview.cpp b/src/videopreview/videopreview.cpp new file mode 100644 index 0000000..4e4151c --- /dev/null +++ b/src/videopreview/videopreview.cpp @@ -0,0 +1,648 @@ +/* smplayer, GUI front-end for mplayer. + Copyright (C) 2006-2009 Ricardo Villalba <rvm@escomposlinux.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. + + 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 "videopreview.h" +#include "videopreviewconfigdialog.h" +#include <QProcess> +#include <QRegExp> +#include <QDir> +#include <QTime> +#include <QProgressDialog> +#include <QWidget> +#include <QGridLayout> +#include <QLabel> +#include <QScrollArea> +#include <QDialogButtonBox> +#include <QPushButton> +#include <QPainter> +#include <QFileDialog> +#include <QMessageBox> +#include <QSettings> +#include <QApplication> +#include <QPixmapCache> +#include <QImageWriter> +#include <QImageReader> + +#include <cmath> + +#define RENAME_PICTURES 0 + +VideoPreview::VideoPreview(QString mplayer_path, QWidget * parent) : QWidget(parent, Qt::Window) +{ + setMplayerPath(mplayer_path); + + set = 0; // settings + save_last_directory = true; + + prop.input_video.clear(); + prop.dvd_device.clear(); + prop.n_cols = 4; + prop.n_rows = 4; + prop.initial_step = 20; + prop.max_width = 800; + prop.aspect_ratio = 0; + prop.display_osd = true; + prop.extract_format = JPEG; + + output_dir = "smplayer_preview"; + full_output_dir = QDir::tempPath() +"/"+ output_dir; + + progress = new QProgressDialog(this); + progress->setMinimumDuration(0); + connect( progress, SIGNAL(canceled()), this, SLOT(cancelPressed()) ); + + w_contents = new QWidget(this); + QPalette p = w_contents->palette(); + p.setColor(w_contents->backgroundRole(), Qt::white); + p.setColor(w_contents->foregroundRole(), Qt::black); + w_contents->setPalette(p); + + info = new QLabel(this); + + foot = new QLabel(this); + foot->setAlignment(Qt::AlignRight); + + grid_layout = new QGridLayout; + grid_layout->setSpacing(2); + + QVBoxLayout * l = new QVBoxLayout; + l->setSizeConstraint(QLayout::SetFixedSize); + l->addWidget(info); + l->addLayout(grid_layout); + l->addWidget(foot); + + w_contents->setLayout(l); + + scroll_area = new QScrollArea(this); + scroll_area->setWidgetResizable(true); + scroll_area->setAlignment(Qt::AlignCenter); + scroll_area->setWidget( w_contents ); + + button_box = new QDialogButtonBox(QDialogButtonBox::Close | QDialogButtonBox::Save, Qt::Horizontal, this); + connect( button_box, SIGNAL(rejected()), this, SLOT(close()) ); + connect( button_box->button(QDialogButtonBox::Save), SIGNAL(clicked()), this, SLOT(saveImage()) ); + + QVBoxLayout * my_layout = new QVBoxLayout; + my_layout->addWidget(scroll_area); + my_layout->addWidget(button_box); + setLayout(my_layout); + + retranslateStrings(); + + QList<QByteArray> r_formats = QImageReader::supportedImageFormats(); + QString read_formats; + for (int n=0; n < r_formats.count(); n++) { + read_formats.append(r_formats[n]+" "); + } + qDebug("VideoPreview::VideoPreview: supported formats for reading: %s", read_formats.toUtf8().constData()); + + QList<QByteArray> w_formats = QImageWriter::supportedImageFormats(); + QString write_formats; + for (int n=0; n < w_formats.count(); n++) { + write_formats.append(w_formats[n]+" "); + } + qDebug("VideoPreview::VideoPreview: supported formats for writing: %s", write_formats.toUtf8().constData()); + + toggleInfoAct = new QAction(this); + toggleInfoAct->setCheckable(true); + toggleInfoAct->setChecked(true); + toggleInfoAct->setShortcut( QKeySequence("Ctrl+H") ); + connect( toggleInfoAct, SIGNAL(toggled(bool)), this, SLOT(showInfo(bool)) ); + addAction(toggleInfoAct); +} + +VideoPreview::~VideoPreview() { + if (set) saveSettings(); +} + +void VideoPreview::retranslateStrings() { + progress->setWindowTitle(tr("Video preview")); + progress->setCancelButtonText( tr("Cancel") ); + + foot->setText("<i>"+ tr("Generated by SMPlayer") +" </i>"); +} + +void VideoPreview::setMplayerPath(QString mplayer_path) { + mplayer_bin = mplayer_path; + QFileInfo fi(mplayer_bin); + if (fi.exists() && fi.isExecutable() && !fi.isDir()) { + mplayer_bin = fi.absoluteFilePath(); + } + + qDebug("VideoPreview::setMplayerPath: mplayer_bin: '%s'", mplayer_bin.toUtf8().constData()); +} + +void VideoPreview::setSettings(QSettings * settings) { + set = settings; + loadSettings(); +} + +void VideoPreview::clearThumbnails() { + for (int n=0; n < label_list.count(); n++) { + grid_layout->removeWidget( label_list[n] ); + delete label_list[n]; + } + label_list.clear(); + info->clear(); +} + +QString VideoPreview::framePicture() { + if (prop.extract_format == PNG) + return "00000005.png"; + else + return "00000005.jpg"; +} + +bool VideoPreview::createThumbnails() { + clearThumbnails(); + error_message.clear(); + + button_box->setEnabled(false); + + bool result = extractImages(); + + progress->close(); + + if ((result == false) && (!error_message.isEmpty())) { + QMessageBox::critical(this, tr("Error"), + tr("The following error has occurred while creating the thumbnails:")+"\n"+ error_message ); + } + + button_box->setEnabled(true); + + // Adjust size + //resize( w_contents->sizeHint() ); + + cleanDir(full_output_dir); + return result; +} + +bool VideoPreview::extractImages() { + VideoInfo i = getInfo(mplayer_bin, prop.input_video); + int length = i.length; + + if (length == 0) { + if (error_message.isEmpty()) error_message = tr("The length of the video is 0"); + return false; + } + + // Create a temporary directory + QDir d(QDir::tempPath()); + if (!d.exists(output_dir)) { + if (!d.mkpath(output_dir)) { + qDebug("VideoPreview::extractImages: error: can't create '%s'", full_output_dir.toUtf8().constData()); + error_message = tr("The temporary directory (%1) can't be created").arg(full_output_dir); + return false; + } + } + + displayVideoInfo(i); + + // Let's begin + run.thumbnail_width = 0; + + int num_pictures = prop.n_cols * prop.n_rows; + length -= prop.initial_step; + int s_step = length / num_pictures; + + int current_time = prop.initial_step; + + canceled = false; + progress->setLabelText(tr("Creating thumbnails...")); + progress->setRange(0, num_pictures-1); + progress->show(); + + double aspect_ratio = i.aspect; + if (prop.aspect_ratio != 0) aspect_ratio = prop.aspect_ratio; + + for (int n = 0; n < num_pictures; n++) { + qDebug("VideoPreview::extractImages: getting frame %d of %d...", n+1, num_pictures); + progress->setValue(n); + qApp->processEvents(); + + if (canceled) return false; + + if (!runMplayer(current_time, aspect_ratio)) return false; + + QString frame_picture = full_output_dir + "/" + framePicture(); + if (!QFile::exists(frame_picture)) { + error_message = tr("The file %1 doesn't exist").arg(frame_picture); + return false; + } + +#if RENAME_PICTURES + QString extension = (extractFormat()==PNG) ? "png" : "jpg"; + QString output_file = output_dir + QString("/picture_%1.%2").arg(current_time, 8, 10, QLatin1Char('0')).arg(extension); + d.rename(output_dir + "/" + framePicture(), output_file); +#else + QString output_file = output_dir + "/" + framePicture(); +#endif + + if (!addPicture(QDir::tempPath() +"/"+ output_file, n, current_time)) { + return false; + } + + current_time += s_step; + } + + return true; +} + +bool VideoPreview::runMplayer(int seek, double aspect_ratio) { + QStringList args; + args << "-nosound"; + + if (prop.extract_format == PNG) { + args << "-vo" + << "png:outdir=\""+full_output_dir+"\""; + } else { + args << "-vo" + << "jpeg:outdir=\""+full_output_dir+"\""; + } + + args << "-frames" << "6" << "-ss" << QString::number(seek); + + if (aspect_ratio != 0) { + args << "-aspect" << QString::number(aspect_ratio) << "-zoom"; + } + + if (!prop.dvd_device.isEmpty()) { + args << "-dvd-device" << prop.dvd_device; + } + + /* + if (display_osd) { + args << "-vf" << "expand=osd=1" << "-osdlevel" << "2"; + } + */ + + args << prop.input_video; + + QString command = mplayer_bin + " "; + for (int n = 0; n < args.count(); n++) command = command + args[n] + " "; + qDebug("VideoPreview::runMplayer: command: %s", command.toUtf8().constData()); + + QProcess p; + p.start(mplayer_bin, args); + if (!p.waitForFinished()) { + qDebug("VideoPreview::runMplayer: error running process"); + error_message = tr("The mplayer process didn't run"); + return false; + } + + return true; +} + + +bool VideoPreview::addPicture(const QString & filename, int num, int time) { + int row = num / prop.n_cols; + int col = num % prop.n_cols; + + qDebug("VideoPreview::addPicture: %d (row: %d col: %d) file: '%s'", num, row, col, filename.toUtf8().constData()); + + QPixmapCache::clear(); + QPixmap picture; + if (!picture.load(filename)) { + qDebug("VideoPreview::addPicture: can't load file"); + error_message = tr("The file %1 can't be loaded").arg(filename); + return false; + } + + if (run.thumbnail_width == 0) { + int spacing = grid_layout->horizontalSpacing() * (prop.n_cols-1); + if (spacing < 0) spacing = 0; + qDebug("VideoPreview::addPicture: spacing: %d", spacing); + run.thumbnail_width = (prop.max_width - spacing) / prop.n_cols; + if (run.thumbnail_width > picture.width()) run.thumbnail_width = picture.width(); + qDebug("VideoPreview::addPicture: thumbnail_width set to %d", run.thumbnail_width); + } + + QPixmap scaled_picture = picture.scaledToWidth(run.thumbnail_width, Qt::SmoothTransformation); + + // Add current time text + if (prop.display_osd) { + QString stime = QTime().addSecs(time).toString("hh:mm:ss"); + QFont font("Arial"); + font.setBold(true); + QPainter painter(&scaled_picture); + painter.setPen( Qt::white ); + painter.setFont(font); + painter.drawText(scaled_picture.rect(), Qt::AlignRight | Qt::AlignBottom, stime); + } + + QLabel * l = new QLabel(this); + label_list.append(l); + l->setPixmap(scaled_picture); + //l->setPixmap(picture); + grid_layout->addWidget(l, row, col); + + return true; +} + +void VideoPreview::displayVideoInfo(const VideoInfo & i) { + // Display info about the video + QTime t = QTime().addSecs(i.length); + + QString aspect = QString::number(i.aspect); + if (fabs(1.77 - i.aspect) < 0.1) aspect = "16:9"; + else + if (fabs(1.33 - i.aspect) < 0.1) aspect = "4:3"; + else + if (fabs(2.35 - i.aspect) < 0.1) aspect = "2.35:1"; + + QString no_info = tr("No info"); + + QString fps = (i.fps==0 || i.fps==1000) ? no_info : QString("%1").arg(i.fps); + QString video_bitrate = (i.video_bitrate==0) ? no_info : tr("%1 kbps").arg(i.video_bitrate/1000); + QString audio_bitrate = (i.audio_bitrate==0) ? no_info : tr("%1 kbps").arg(i.audio_bitrate/1000); + QString audio_rate = (i.audio_rate==0) ? no_info : tr("%1 Hz").arg(i.audio_rate); + + info->setText( + "<b><font size=+1>" + i.filename +"</font></b>" + "<table cellspacing=4 cellpadding=4><tr>" + "<td>" + + tr("Size: %1 MB").arg(i.size / (1024*1024)) + "<br>" + + tr("Resolution: %1x%2").arg(i.width).arg(i.height) + "<br>" + + tr("Length: %1").arg(t.toString("hh:mm:ss")) + + "</td>" + "<td>" + + tr("Video format: %1").arg(i.video_format) + "<br>" + + tr("Frames per second: %1").arg(fps) + "<br>" + + tr("Aspect ratio: %1").arg(aspect) + //"<br>" + + "</td>" + "<td>" + + tr("Video bitrate: %1").arg(video_bitrate) + "<br>" + + tr("Audio bitrate: %1").arg(audio_bitrate) + "<br>" + + tr("Audio rate: %1").arg(audio_rate) + //"<br>" + + "</td>" + "</tr></table>" + ); + setWindowTitle( tr("Video preview") + " - " + i.filename ); +} + +void VideoPreview::cleanDir(QString directory) { + QStringList filter; + if (prop.extract_format == PNG) { + filter.append("*.png"); + } else { + filter.append("*.jpg"); + } + + QDir d(directory); + QStringList l = d.entryList( filter, QDir::Files, QDir::Unsorted); + + for (int n = 0; n < l.count(); n++) { + qDebug("VideoPreview::cleanDir: deleting '%s'", l[n].toUtf8().constData()); + d.remove(l[n]); + } + qDebug("VideoPreview::cleanDir: removing directory '%s'", directory.toUtf8().constData()); + d.rmpath(directory); +} + +VideoInfo VideoPreview::getInfo(const QString & mplayer_path, const QString & filename) { + VideoInfo i; + + if (filename.isEmpty()) { + error_message = tr("No filename"); + return i; + } + + QFileInfo fi(filename); + if (fi.exists()) { + i.filename = fi.fileName(); + i.size = fi.size(); + } + + QRegExp rx("^ID_(.*)=(.*)"); + + QProcess p; + p.setProcessChannelMode( QProcess::MergedChannels ); + + QStringList args; + args << "-vo" << "null" << "-ao" << "null" << "-frames" << "1" << "-identify" << "-nocache" << "-noquiet" << filename; + + if (!prop.dvd_device.isEmpty()) { + args << "-dvd-device" << prop.dvd_device; + } + + p.start(mplayer_path, args); + + if (p.waitForFinished()) { + QByteArray line; + while (p.canReadLine()) { + line = p.readLine().trimmed(); + qDebug("VideoPreview::getInfo: '%s'", line.constData()); + if (rx.indexIn(line) > -1) { + QString tag = rx.cap(1); + QString value = rx.cap(2); + qDebug("VideoPreview::getInfo: tag: '%s', value: '%s'", tag.toUtf8().constData(), value.toUtf8().constData()); + + if (tag == "LENGTH") i.length = (int) value.toDouble(); + else + if (tag == "VIDEO_WIDTH") i.width = value.toInt(); + else + if (tag == "VIDEO_HEIGHT") i.height = value.toInt(); + else + if (tag == "VIDEO_FPS") i.fps = value.toDouble(); + else + if (tag == "VIDEO_ASPECT") { + i.aspect = value.toDouble(); + if ((i.aspect == 0) && (i.width != 0) && (i.height != 0)) { + i.aspect = (double) i.width / i.height; + } + } + else + if (tag == "VIDEO_BITRATE") i.video_bitrate = value.toInt(); + else + if (tag == "AUDIO_BITRATE") i.audio_bitrate = value.toInt(); + else + if (tag == "AUDIO_RATE") i.audio_rate = value.toInt(); + else + if (tag == "VIDEO_FORMAT") i.video_format = value; + } + } + } else { + qDebug("VideoPreview::getInfo: error: process didn't start"); + error_message = tr("The mplayer process didn't start while trying to get info about the video"); + } + + qDebug("VideoPreview::getInfo: filename: '%s'", i.filename.toUtf8().constData()); + qDebug("VideoPreview::getInfo: resolution: '%d x %d'", i.width, i.height); + qDebug("VideoPreview::getInfo: length: '%d'", i.length); + qDebug("VideoPreview::getInfo: size: '%d'", (int) i.size); + + return i; +} + +void VideoPreview::showInfo(bool visible) { + qDebug("VideoPreview::showInfo: %d", visible); + info->setShown(visible); + foot->setShown(visible); +} + +void VideoPreview::saveImage() { + qDebug("VideoPreview::saveImage"); + + // Proposed name + QString proposed_name = ""; + if (save_last_directory) proposed_name = last_directory; + + QFileInfo fi(prop.input_video); + if (fi.exists()) { + if (!save_last_directory) proposed_name = fi.absolutePath(); + QString extension = (extractFormat()==PNG) ? "png" : "jpg"; + proposed_name += "/"+ fi.completeBaseName() +"_preview."+ extension; + } + + // Formats + QList<QByteArray> w_formats = QImageWriter::supportedImageFormats(); + QString write_formats; + for (int n=0; n < w_formats.count(); n++) { + write_formats.append("*."+w_formats[n]+" "); + } + if (write_formats.isEmpty()) { + // Shouldn't happen! + write_formats = "*.png *.jpg"; + } + + QString filename = QFileDialog::getSaveFileName(this, tr("Save file"), + proposed_name, tr("Images") +" ("+ write_formats +")"); + + if (!filename.isEmpty()) { + QPixmap image = QPixmap::grabWidget(w_contents); + if (!image.save(filename)) { + // Failed!!! + qDebug("VideoPreview::saveImage: error saving '%s'", filename.toUtf8().constData()); + QMessageBox::warning(this, tr("Error saving file"), + tr("The file couldn't be saved") ); + } else { + last_directory = QFileInfo(filename).absolutePath(); + } + } +} + +bool VideoPreview::showConfigDialog(QWidget * parent) { + VideoPreviewConfigDialog d(parent); + + d.setVideoFile( videoFile() ); + d.setDVDDevice( DVDDevice() ); + d.setCols( cols() ); + d.setRows( rows() ); + d.setInitialStep( initialStep() ); + d.setMaxWidth( maxWidth() ); + d.setDisplayOSD( displayOSD() ); + d.setAspectRatio( aspectRatio() ); + d.setFormat( extractFormat() ); + d.setSaveLastDirectory( save_last_directory ); + + if (d.exec() == QDialog::Accepted) { + setVideoFile( d.videoFile() ); + setDVDDevice( d.DVDDevice() ); + setCols( d.cols() ); + setRows( d.rows() ); + setInitialStep( d.initialStep() ); + setMaxWidth( d.maxWidth() ); + setDisplayOSD( d.displayOSD() ); + setAspectRatio( d.aspectRatio() ); + setExtractFormat(d.format() ); + save_last_directory = d.saveLastDirectory(); + + return true; + } + + return false; +} + +void VideoPreview::saveSettings() { + qDebug("VideoPreview::saveSettings"); + + set->beginGroup("videopreview"); + + set->setValue("columns", cols()); + set->setValue("rows", rows()); + set->setValue("initial_step", initialStep()); + set->setValue("max_width", maxWidth()); + set->setValue("osd", displayOSD()); + set->setValue("format", extractFormat()); + set->setValue("save_last_directory", save_last_directory); + + if (save_last_directory) { + set->setValue("last_directory", last_directory); + } + + set->setValue("filename", videoFile()); + set->setValue("dvd_device", DVDDevice()); + + set->setValue("show_info", toggleInfoAct->isChecked()); + + set->endGroup(); +} + +void VideoPreview::loadSettings() { + qDebug("VideoPreview::loadSettings"); + + set->beginGroup("videopreview"); + + setCols( set->value("columns", cols()).toInt() ); + setRows( set->value("rows", rows()).toInt() ); + setInitialStep( set->value("initial_step", initialStep()).toInt() ); + setMaxWidth( set->value("max_width", maxWidth()).toInt() ); + setDisplayOSD( set->value("osd", displayOSD()).toBool() ); + setExtractFormat( (ExtractFormat) set->value("format", extractFormat()).toInt() ); + save_last_directory = set->value("save_last_directory", save_last_directory).toBool(); + last_directory = set->value("last_directory", last_directory).toString(); + + setVideoFile( set->value("filename", videoFile()).toString() ); + setDVDDevice( set->value("dvd_device", DVDDevice()).toString() ); + + toggleInfoAct->setChecked(set->value("show_info", true).toBool()); + + set->endGroup(); +} + +void VideoPreview::adjustWindowSize() { + qDebug("VideoPreview::adjustWindowSize: window size: %d %d", width(), height()); + qDebug("VideoPreview::adjustWindowSize: scroll_area size: %d %d", scroll_area->width(), scroll_area->height()); + + int diff_width = width() - scroll_area->maximumViewportSize().width(); + int diff_height = height() - scroll_area->maximumViewportSize().height(); + + qDebug("VideoPreview::adjustWindowSize: diff_width: %d diff_height: %d", diff_width, diff_height); + + QSize new_size = w_contents->size() + QSize( diff_width, diff_height); + + qDebug("VideoPreview::adjustWindowSize: new_size: %d %d", new_size.width(), new_size.height()); + + resize(new_size); +} + +void VideoPreview::cancelPressed() { + canceled = true; +} + +// Language change stuff +void VideoPreview::changeEvent(QEvent *e) { + if (e->type() == QEvent::LanguageChange) { + retranslateStrings(); + } else { + QWidget::changeEvent(e); + } +} + +#include "moc_videopreview.cpp" + |