jfjoch_process: Print frame rate

tools/jfjoch_process.cpp

@@ -389,6 +389,8 @@ int main(int argc, char **argv) {
 
     IndexAndRefine indexer(experiment, &indexer_pool);
 
+    std::atomic<int> finished_count = 0;
+
     auto worker = [&](int thread_id) {
         JFJochBitShuffleCompressor compressor(experiment.GetCompressionAlgorithm());
         std::vector<uint8_t> compressed_buffer;
@@ -481,6 +483,8 @@ int main(int argc, char **argv) {
                     break;
             }
 
+            finished_count.fetch_add(1);
+
             // Progress log
             if (current_idx_offset > 0 && current_idx_offset % 100 == 0) {
                 std::optional<float> indexing_rate;
@@ -489,13 +493,20 @@ int main(int argc, char **argv) {
                     indexing_rate = plots.GetIndexingRate();
                 }
 
+                const auto now = std::chrono::steady_clock::now();
+                const double elapsed_s = std::chrono::duration<double>(now - start_time).count();
+                const int processed_images = finished_count.load();
+                const double frame_rate_hz = (elapsed_s > 0.0) ? (processed_images / elapsed_s) : 0.0;
+
                 if (indexing_rate.has_value()) {
-                    logger.Info("Processed {} / {} images (indexing rate {:.1f}%)",
+                    logger.Info("Processed {} / {} images ({:.2f} Hz, indexing rate {:.1f}%)",
                                 current_idx_offset, images_to_process,
+                                frame_rate_hz,
                                 indexing_rate.value() * 100.0f);
                 } else {
-                    logger.Info("Processed {} / {} images (indexing rate N/A)",
-                                current_idx_offset, images_to_process);
+                    logger.Info("Processed {} / {} images ({:.2f} Hz, indexing rate N/A)",
+                                current_idx_offset, images_to_process,
+                                frame_rate_hz);
                 }
             }
         }