update singleton logic and disable thumbnail for videos for now

src/mediastreamermanager.cpp

@@ -3,28 +3,17 @@
 #include <QDebug>
 #include <QMutexLocker>
 
-// TODO: update singleton implementation
-// Static member definitions
-MediaStreamerManager *MediaStreamerManager::s_instance = nullptr;
-QMutex MediaStreamerManager::s_instanceMutex;
-
-MediaStreamerManager::MediaStreamerManager(QObject *parent) : QObject(parent) {}
-
 MediaStreamerManager::~MediaStreamerManager() { cleanup(); }
 
 MediaStreamerManager *MediaStreamerManager::sharedInstance()
 {
-    QMutexLocker locker(&s_instanceMutex);
-    if (!s_instance) {
-        s_instance = new MediaStreamerManager();
-    }
-    return s_instance;
+    static MediaStreamerManager instance;
+    return &instance;
 }
 
 QUrl MediaStreamerManager::getStreamUrl(iDescriptorDevice *device,
                                         const QString &filePath)
 {
-    QMutexLocker locker(&m_streamersMutex);
 
     // Check if we already have a streamer for this file
     auto it = m_streamers.find(filePath);
@@ -74,7 +63,6 @@ QUrl MediaStreamerManager::getStreamUrl(iDescriptorDevice *device,
 
 void MediaStreamerManager::releaseStreamer(const QString &filePath)
 {
-    QMutexLocker locker(&m_streamersMutex);
 
     auto it = m_streamers.find(filePath);
     if (it != m_streamers.end()) {
@@ -93,7 +81,6 @@ void MediaStreamerManager::releaseStreamer(const QString &filePath)
 
 void MediaStreamerManager::cleanup()
 {
-    QMutexLocker locker(&m_streamersMutex);
 
     auto it = m_streamers.begin();
     while (it != m_streamers.end()) {
@@ -112,8 +99,6 @@ void MediaStreamerManager::cleanup()
 
 void MediaStreamerManager::onStreamerDestroyed()
 {
-    QMutexLocker locker(&m_streamersMutex);
-
     // Find and remove the destroyed streamer
     auto it = m_streamers.begin();
     while (it != m_streamers.end()) {

src/mediastreamermanager.h

@@ -2,13 +2,12 @@
 #define MEDIASTREAMERMANAGER_H
 
 #include "iDescriptor.h"
+#include "mediastreamer.h"
 #include <QMap>
 #include <QMutex>
 #include <QObject>
 #include <QUrl>
 
-class MediaStreamer;
-
 /**
  * @brief Singleton manager for MediaStreamer instances
  *
@@ -47,13 +46,8 @@ public:
     void cleanup();
 
 private:
-    explicit MediaStreamerManager(QObject *parent = nullptr);
     ~MediaStreamerManager();
 
-    // Disable copy constructor and assignment operator
-    MediaStreamerManager(const MediaStreamerManager &) = delete;
-    MediaStreamerManager &operator=(const MediaStreamerManager &) = delete;
-
 private slots:
     void onStreamerDestroyed();
 

src/photomodel.cpp

@@ -277,29 +277,30 @@ void PhotoModel::requestThumbnail(int index)
         // Load video thumbnail asynchronously
         future = QtConcurrent::run([=]() {
             // Check disk cache first
-            if (QFile::exists(cachePath)) {
-                QPixmap cached(cachePath);
-                if (!cached.isNull() && cached.size() == m_thumbnailSize) {
-                    qDebug() << "Video disk cache HIT for:"
-                             << QFileInfo(info.filePath).fileName();
-                    return cached;
-                }
-            }
+            // if (QFile::exists(cachePath)) {
+            //     QPixmap cached(cachePath);
+            //     if (!cached.isNull() && cached.size() == m_thumbnailSize) {
+            //         qDebug() << "Video disk cache HIT for:"
+            //                  << QFileInfo(info.filePath).fileName();
+            //         return cached;
+            //     }
+            // }
 
-            // Generate video thumbnail
-            QPixmap thumbnail = generateVideoThumbnail(m_device, info.filePath,
-                                                       m_thumbnailSize);
+            // // Generate video thumbnail
+            // QPixmap thumbnail = generateVideoThumbnail(m_device,
+            // info.filePath,
+            //                                            m_thumbnailSize);
 
-            // Save to disk cache if successful
-            if (!thumbnail.isNull()) {
-                QDir().mkpath(QFileInfo(cachePath).absolutePath());
-                if (thumbnail.save(cachePath, "JPG", 85)) {
-                    qDebug() << "Saved video thumbnail to disk cache:"
-                             << QFileInfo(info.filePath).fileName();
-                }
-            }
-
-            return thumbnail;
+            // // Save to disk cache if successful
+            // if (!thumbnail.isNull()) {
+            //     QDir().mkpath(QFileInfo(cachePath).absolutePath());
+            //     if (thumbnail.save(cachePath, "JPG", 85)) {
+            //         qDebug() << "Saved video thumbnail to disk cache:"
+            //                  << QFileInfo(info.filePath).fileName();
+            //     }
+            // }
+            return QIcon::fromTheme("video-x-generic").pixmap(m_thumbnailSize);
+            // return thumbnail;
         });
     } else {
         // Load image thumbnail asynchronously (existing logic)