[writer] add nix to dependencies, add nix output for timestamps

recorder.pro

@@ -22,10 +22,12 @@ SOURCES       = \
 target.path = $$[QT_INSTALL_EXAMPLES]/widgets/widgets/imageviewer
 INSTALLS += target
 
-unix:!macx: LIBS += -L$$/opt/pylon5/lib64/ -Wl,-E -lpylonbase -lpylonutility -lGenApi_gcc_v3_1_Basler_pylon -lGCBase_gcc_v3_1_Basler_pylon
+unix:!macx: LIBS += -L$$/opt/pylon5/lib64/ -Wl,-E -lpylonbase -lpylonutility -lGenApi_gcc_v3_1_Basler_pylon -lGCBase_gcc_v3_1_Basler_pylon -lnix
 
+# pylon includes
 INCLUDEPATH += $$/opt/pylon5/include
 DEPENDPATH += $$/opt/pylon5/include
 
+
 RESOURCES += \
     resources.qrc

writer.cpp

@@ -1,4 +1,7 @@
 #include "writer.h"
+#include <nix.hpp>
+#include <chrono>
+
 
 void Writer::setVideoSpecs(VideoSpecs specs) {
   videoSpecs = specs;
@@ -6,7 +9,9 @@ void Writer::setVideoSpecs(VideoSpecs specs) {
 }
 
 void Writer::run() {
-  int64_t count = 0;
+  size_t count = 0;
+  size_t chunksize = 1024;
+
   if (valid) {
       stop_request = false;
       stopNow = false;
@@ -14,18 +19,61 @@ void Writer::run() {
       videoWriter.SetParameter(videoSpecs.width, videoSpecs.height, videoSpecs.pixelType,
                                videoSpecs.fps, videoSpecs.quality);
       videoWriter.Open(videoSpecs.filename.c_str());
+      nix::File nix_file =nix::File::open(videoSpecs.filename + ".nix", nix::FileMode::Overwrite, "hdf5", nix::Compression::DeflateNormal);
+      nix::Block b = nix_file.createBlock("Recording", "nix.recording");
+      nix::Section s = nix_file.createSection("Recroding", "nix.recording");
+      nix::Value v(nix::util::timeToStr(std::chrono::system_clock::to_time_t(std::chrono::system_clock::now())));
+      s.createProperty("date", v);
+      nix::Value fn(videoSpecs.filename);
+      s.createProperty("moviefile", fn);
+      nix::Section sw_sec = s.createSection("PylonRecorder", "nix.software");
+      sw_sec.createProperty("version", nix::Value(1));
+
+      nix::Section hw_sec = s.createSection("Basler ACE", "nix.hardware.camera");
+      hw_sec.createProperty("type", nix::Value("monochrome"));
+      nix::Property p = hw_sec.createProperty("framerate", nix::DataType::Int16);
+      nix::Value fr(videoSpecs.fps);
+      p.unit("Hz");
+      p.values({v});
+
+      nix::NDSize initial_shape(1, chunksize);
+      nix::DataArray frametimes = b.createDataArray("frametimes", "nix.imaging.frametimes", nix::DataType::String, initial_shape);
+      frametimes.label("time");
+      frametimes.appendSetDimension();
+      nix::DataArray frameindices = b.createDataArray("frameindex", "nix.imaging.frameid", nix::DataType::Int64, initial_shape);
+      frametimes.appendSetDimension();
+
+      std::vector<std::string> stamps_buffer(chunksize);
+      std::vector<int64_t> ids_buffer(chunksize);
+
+      nix::NDSize offset(1, 0);
+      nix::NDSize current_shape(initial_shape);
+      nix::NDSize chunk_shape(1, chunksize);
+
       MyImage img;
       while ((!stop_request || buffer->bufferLoad() > 0) && !stopNow) {
           if (buffer->bufferLoad() > 0 ) {
               bool valid = buffer->pop(img);
               if (valid) {
-                  count ++;
                   Pylon::CPylonImage pyImage;
                   try {
                     pyImage.AttachUserBuffer(img.data(), videoSpecs.width * videoSpecs.height, videoSpecs.pixelType, videoSpecs.width, videoSpecs.height, 0, videoSpecs.orientation);
                     videoWriter.Add( pyImage );
                   } catch (const Pylon::GenericException &e) {
-                    std::cerr << "An exception occurred." << std::endl << e.GetDescription() << std::endl;
+                    std::cerr << "Writer::run: An exception occurred." << std::endl << e.GetDescription() << std::endl;
+                  }
+                  if (count < chunksize) {
+                      stamps_buffer[count] = nix::util::timeToStr(img.timestamp());
+                      ids_buffer[count] = img.index();
+                      count ++;
+                  } else {
+                      frametimes.setData(nix::DataType::String, stamps_buffer.data(), chunk_shape, offset);
+                      frameindices.setData(nix::DataType::Int64, ids_buffer.data(), chunk_shape, offset);
+                      current_shape += initial_shape;
+                      frametimes.dataExtent(current_shape);
+                      frameindices.dataExtent(current_shape);
+                      offset[0] += chunksize;
+                      count = 0;
                    }
                 }
             } else {
@@ -34,7 +82,13 @@ void Writer::run() {
                 }
             }
         }
+        if (count > 0) {
+            chunk_shape[0] = count;
+            frametimes.setData(nix::DataType::String, stamps_buffer.data(), chunk_shape, offset);
+            frameindices.setData(nix::DataType::Int64, ids_buffer.data(), chunk_shape, offset);
+        }
         videoWriter.Close();
+        nix_file.close();
     } else {
       std::cerr << "Got no video specifications, not writing!" << std::endl;
     }