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the addition of a thumbnailer that works for videos

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the previewSlideDelegate now uses the thumbnails instead
This commit is contained in:
Chris Cochrun 2023-02-08 14:16:26 -06:00
parent 1b55be29e5
commit 014a38a4f9
11 changed files with 638 additions and 37 deletions
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85
src/cpp/slidemodel.cpp
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@ -2,6 +2,8 @@
#include "mpv/mpvobject.h"
#include "serviceitem.h"
#include "slide.h"
#include "framedecoder.h"
#include <qabstractitemmodel.h>
#include <qglobal.h>
#include <qnamespace.h>
@ -83,6 +85,8 @@ QVariant SlideModel::data(const QModelIndex &index, int role) const {
return item->active();
case SelectedRole:
return item->selected();
case VidThumbnailRole:
return item->vidThumbnail();
default:
return QVariant();
}
@ -102,7 +106,8 @@ QHash<int, QByteArray> SlideModel::roleNames() const {
{VerticalTextAlignmentRole, "verticalTextAlignment"},
{SlideIndexRole, "slideIndex"},
{ActiveRole, "active"},
{SelectedRole, "selected"}
{SelectedRole, "selected"},
{VidThumbnailRole, "vidThumbnail"}
};
return mapping;
@ -645,24 +650,15 @@ void SlideModel::moveRowFromService(const int &fromIndex,
}
}
QString SlideModel::thumbnailVideo(QString video, int serviceItemId) {
qDebug() << "dir location " << writeDir.absolutePath();
if (!writeDir.mkpath(".")) {
qFatal("Failed to create writable location at %s", qPrintable(writeDir.absolutePath()));
}
QString SlideModel::thumbnailVideo(QString video, int serviceItemId, int index) {
QDir dir = writeDir.absolutePath() + "/librepresenter/thumbnails";
qDebug() << "thumbnails dir: " << dir;
QDir absDir = writeDir.absolutePath() + "/librepresenter";
if (!dir.exists()) {
qDebug() << dir.path() << "does not exist";
absDir.mkdir("thumbnails");
}
qDebug() << "@@@@@@@@@@@@@@@@@@@@@";
qDebug() << dir.path();
qDebug() << "@@@@@@@@@@@@@@@@@@@@@";
QFileInfo vid(video);
QString id;
id.setNum(serviceItemId);
@ -670,18 +666,63 @@ QString SlideModel::thumbnailVideo(QString video, int serviceItemId) {
qDebug() << vidName;
QString thumbnail = dir.path() + "/" + vidName + ".webp";
QFileInfo thumbnailInfo(dir.path() + "/" + vidName + ".jpg");
qDebug() << thumbnailInfo.filePath();
// if (thumbnail.open(QIODevice::ReadOnly)) {
// qDebug() << "@@@@@@@@@@@@@@@@@@@@@";
// qDebug() << thumbnailInfo.filePath();
// qDebug() << "@@@@@@@@@@@@@@@@@@@@@";
// }
qDebug() << thumbnailInfo.filePath() << "FOR" << index;
if (thumbnailInfo.exists()) {
for (int i = 0; i < rowCount(); i++) {
if (m_items[i]->serviceItemId() == serviceItemId) {
m_items[i]->setVidThumbnail("file://" + thumbnailInfo.absoluteFilePath());
}
}
return thumbnailInfo.filePath();
}
MpvObject *mpv;
mpv->loadFile(video);
mpv->seek(5);
mpv->screenshotToFile(thumbnail);
QImage image;
QString filename = video.right(video.size() - 7);
image = frameToImage(filename, 576);
if (image.isNull()) {
qDebug() << QStringLiteral("Failed to create thumbnail for file: %1").arg(video);
return "failed";
}
qDebug() << "dir location " << writeDir.absolutePath();
if (!writeDir.mkpath(".")) {
qFatal("Failed to create writable location at %s", qPrintable(writeDir.absolutePath()));
}
if (!image.save(thumbnailInfo.filePath())) {
qDebug() << QStringLiteral("Failed to save thumbnail for file: %1").arg(video);
}
for (int i = 0; i < rowCount(); i++) {
if (m_items[i]->serviceItemId() == serviceItemId) {
m_items[i]->setVidThumbnail("file://" + thumbnailInfo.absoluteFilePath());
}
}
// MpvObject mpv;
// mpv.loadFile(video);
// mpv.seek(5);
// mpv.screenshotToFile(thumbnail);
// mpv.quit();
return thumbnailInfo.filePath();
}
QImage SlideModel::frameToImage(const QString &video, int width)
{
QImage image;
FrameDecoder frameDecoder(video, nullptr);
if (!frameDecoder.getInitialized()) {
return image;
}
// before seeking, a frame has to be decoded
if (!frameDecoder.decodeVideoFrame()) {
return image;
}
int secondToSeekTo = frameDecoder.getDuration() * 20 / 100;
frameDecoder.seek(secondToSeekTo);
frameDecoder.getScaledVideoFrame(width, true, image);
return image;
}