trying to use mpv as a thumbnailing utility

src/cpp/mpv/mpvobject.cpp

@@ -533,7 +533,7 @@ void MpvObject::seek(double pos)
 {
   // qDebug() << "seek" << pos;
   pos = qMax(0.0, qMin(pos, m_duration));
-  commandAsync(QVariantList() << "seek" << pos << "absolute");
+  command(QVariantList() << "seek" << pos << "absolute");
 }
 
 void MpvObject::loadFile(QVariant urls)
@@ -542,9 +542,13 @@ void MpvObject::loadFile(QVariant urls)
   command(QVariantList() << "loadfile" << urls);
 }
 
-void MpvObject::screenshotToFile(QUrl url) {
+void MpvObject::screenshotToFile(QString file) {
-  QString file = url.path() + ".jpg";
+  command(QVariantList() << "show-progress");
-  commandAsync(QVariantList() << "screenshot-to-file" << file << "video");
+  command(QVariantList() << "screenshot-to-file" << file << "video");
+  command(QVariantList() << "show-progress");
+  qDebug() << "screenshot-to-file" << file << "video";
+  qDebug() << "screenshot made: " << file;
+  quit();
 }
 
 void MpvObject::subAdd(QVariant urls)

src/cpp/mpv/mpvobject.h

@@ -137,7 +137,7 @@ public slots:
   void stepForward();
   void seek(double pos);
   void loadFile(QVariant urls);
-  void screenshotToFile(QUrl url);
+  void screenshotToFile(QString file);
   void subAdd(QVariant urls);
 
   bool enableAudio() const { return m_enableAudio; }

src/cpp/slidemodel.cpp

@@ -1,4 +1,5 @@
 #include "slidemodel.h"
+#include "mpv/mpvobject.h"
 #include "serviceitem.h"
 #include "slide.h"
 #include <qabstractitemmodel.h>
@@ -12,6 +13,7 @@
 #include <QFile>
 #include <QMap>
 #include <QTemporaryFile>
+#include <QTemporaryDir>
 #include <QDir>
 #include <QUrl>
 #include <QSettings>
@@ -645,31 +647,41 @@ void SlideModel::moveRowFromService(const int &fromIndex,
 
 QString SlideModel::thumbnailVideo(QString video, int serviceItemId) {
 
-  // if (!writeDir.mkpath(".")) {
+  qDebug() << "dir location " << writeDir.absolutePath();
-  //   qFatal("Failed to create writable location at %s", qPrintable(writeDir.absolutePath()));
+  if (!writeDir.mkpath(".")) {
-  // }
+    qFatal("Failed to create writable location at %s", qPrintable(writeDir.absolutePath()));
-
-  // qDebug() << "Url of screenshot to be taken: " << url;
-  // QDir dir = writeDir.absolutePath() + "/thumbnails";
-  // qDebug() << "thumbnails dir: " << dir;
-  // QDir absDir = writeDir.absolutePath();
-  // if (!dir.exists())
-  //   absDir.mkdir("thumbnails");
-
-  QTemporaryFile thumbnail = ;
-  if (thumbnail.open()) {
-    qDebug() << "@@@@@@@@@@@@@@@@@@@@@";
-    qDebug() << thumbnail.fileName();
-    qDebug() << "@@@@@@@@@@@@@@@@@@@@@";
-
-    // return thumbnail.fileName();
   }
 
-  QTemporaryDir dir;
+  QDir dir = writeDir.absolutePath() + "/librepresenter/thumbnails";
-  if (dir.isValid()) {
+  qDebug() << "thumbnails dir: " << dir;
-    // dir.path() returns the unique directory path
+  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);
+  QString vidName(vid.fileName() + "-" + id);
+  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() << "@@@@@@@@@@@@@@@@@@@@@";
+  // }
+
+  MpvObject *mpv;
+  mpv->loadFile(video);
+  mpv->seek(5);
+  mpv->screenshotToFile(thumbnail);
+  // mpv.quit();
+
+  return thumbnailInfo.filePath();
 }

src/cpp/slidemodel.h

@@ -79,7 +79,7 @@ public:
   Q_INVOKABLE QVariantMap getItem(int index) const;
   Q_INVOKABLE QVariantList getItems();
   Q_INVOKABLE int findSlideIdFromServItm(int index);
-  Q_INVOKABLE void thumbnailVideo(QString video, int serviceItemId);
+  Q_INVOKABLE QString thumbnailVideo(QString video, int serviceItemId);
 
 
 public slots:

src/qml/presenter/PreviewSlideListDelegate.qml

@@ -59,7 +59,8 @@ Item {
         anchors.fill: parent
         hoverEnabled: true
         onClicked: {
-            changeSlide(index);
+            /* changeSlide(index); */
+            showPassiveNotification(SlideModel.thumbnailVideo(model.videoBackground, model.serviceItemId));
         }
         cursorShape: Qt.PointingHandCursor
         propagateComposedEvents: true