RtabmapThread: when receiving new map event from odometry, wait until the buffer has reached the corresponding timestamp before triggering a new map. DBReader: regenerate stamps when sync capture rate with stamps in database is false. MainWindow: ask for PNG or JPEG format when activating auto capture.

corelib/src/DBReader.cpp

@@ -401,6 +401,10 @@ SensorData DBReader::getNextData(CameraInfo * info)
 				_previousStamp = stamp;
 				_previousMapID = mapId;
 			}
+			else
+			{
+				stamp = 0;
+			}
 
 			data.uncompressData();
 			if(data.cameraModels().size() > 1 &&