* Enhancements for XFEL

* Enhancements for EIGER
* Writer is more flexible and capable of handling DECTRIS data

writer/HDF5DataFilePluginXFEL.cpp

@@ -0,0 +1,52 @@
+// Copyright (2019-2024) Paul Scherrer Institute
+
+#include "HDF5DataFilePluginXFEL.h"
+
+void HDF5DataFilePluginXFEL::SetupSWMRFile(HDF5File &data_file, const DataMessage &msg) {
+    if (msg.xfel_pulse_id.has_value() && msg.xfel_event_code.has_value())
+        enable = true;
+    else
+        return;
+
+    HDF5Group(data_file, "/entry/xfel").NXClass("NXcollection");
+
+    HDF5DataSpace data_space_linear({2}, {H5S_UNLIMITED});
+    HDF5Dcpl dcpl_linear;
+    dcpl_linear.SetChunking({1});
+    HDF5DataSet(data_file, "/entry/xfel/pulseID", HDF5DataType(8, false), data_space_linear, dcpl_linear).SetExtent({1});
+    HDF5DataSet(data_file, "/entry/xfel/eventCode", HDF5DataType(4, false), data_space_linear, dcpl_linear).SetExtent({1});
+}
+
+void HDF5DataFilePluginXFEL::OpenFile(HDF5File &data_file, const DataMessage &msg) {
+    if (!enable)
+        return;
+
+    data_set_xfel_event_code = std::make_unique<HDF5DataSet>(data_file, "/entry/xfel/eventCode");
+    data_set_xfel_pulseid = std::make_unique<HDF5DataSet>(data_file, "/entry/xfel/pulseID");
+}
+
+void HDF5DataFilePluginXFEL::Write(const DataMessage &msg) {
+    if (!enable
+        || !msg.xfel_pulse_id.has_value()
+        || !msg.xfel_event_code.has_value())
+        return;
+
+    size_t image_number = msg.number;
+
+    if (image_number >= max_image_number) {
+        max_image_number = image_number;
+        data_set_xfel_pulseid->SetExtent({max_image_number + 1});
+        data_set_xfel_event_code->SetExtent({max_image_number + 1});
+    }
+
+    data_set_xfel_event_code->WriteScalar(msg.xfel_event_code.value(), {image_number});
+    data_set_xfel_pulseid->WriteScalar(msg.xfel_pulse_id.value(), {image_number});
+}
+
+void HDF5DataFilePluginXFEL::Flush() {
+    if (!enable)
+        return;
+    
+    data_set_xfel_event_code->Flush();
+    data_set_xfel_pulseid->Flush();
+}