async resume

Author: saeugetier

src/libcameracamera.cpp

@@ -320,24 +320,29 @@ void LibCameraWorker::captureImage() {
 }
 
 void LibCameraWorker::processCaptureComplete(Request *request) {
+  qDebug() << "[DEBUG] processCaptureComplete called, status:" << request->status();
+
   if (request->status() == Request::RequestCancelled) {
-    resumeViewfinder();
+    // Defer resumeViewfinder to run outside this callback
+    QMetaObject::invokeMethod(this, "resumeViewfinder", Qt::QueuedConnection);
     return;
   }
 
   // Convert buffer to image
   if (!request->buffers().empty()) {
     QImage img = convertBufferToImage(request->buffers());
     if (!img.isNull()) {
-      emit imageCaptured(img);
+      Q_EMIT imageCaptured(img);
     } else {
-      emit errorOccurred("libcamera: failed to convert capture buffer");
+      Q_EMIT errorOccurred("libcamera: failed to convert capture buffer");
     }
   } else {
-    emit errorOccurred("libcamera: capture request has no buffers");
+    Q_EMIT errorOccurred("libcamera: capture request has no buffers");
   }
 
-  resumeViewfinder();
+  // Defer resumeViewfinder to run outside this callback
+  // This is critical - we cannot call mCamera->stop() from within the requestCompleted callback
+  QMetaObject::invokeMethod(this, "resumeViewfinder", Qt::QueuedConnection);
 }
 
 void LibCameraWorker::resumeViewfinder() {

src/libcameracamera.h

@@ -33,6 +33,7 @@ public slots:
   void startCamera(const QString &cameraId);
   void stopCamera();
   void captureImage();
+  void resumeViewfinder();
   void queueViewfinderRequest();
 
 signals:
@@ -45,7 +46,7 @@ public slots:
   bool configureCamera(libcamera::StreamRole role);
   void processCompletedRequest(libcamera::Request *request);
   void processCaptureComplete(libcamera::Request *request);
-  void resumeViewfinder();
+  
   QImage convertBufferToImage(
       const std::map<const libcamera::Stream *, libcamera::FrameBuffer *> &buffers);