Rename project to jf-buffer-writer

jf-buffer-writer/src/BufferStats.cpp

@@ -0,0 +1,50 @@
+#include <iostream>
+#include "BufferStats.hpp"
+
+using namespace std;
+using namespace chrono;
+
+BufferStats::BufferStats(const string& source_name, const size_t stats_modulo) :
+    source_name_(source_name),
+    stats_modulo_(stats_modulo)
+{
+   reset_counters();
+}
+
+void BufferStats::reset_counters()
+{
+    frames_counter_ = 0;
+    total_buffer_write_us_ = 0;
+    max_buffer_write_us_ = 0;
+}
+
+void BufferStats::start_frame_write()
+{
+    stats_interval_start_ = steady_clock::now();
+}
+
+void BufferStats::end_frame_write()
+{
+    frames_counter_++;
+
+    uint32_t write_us_duration = duration_cast<microseconds>(
+            steady_clock::now()-stats_interval_start_).count();
+
+    total_buffer_write_us_ += write_us_duration;
+    max_buffer_write_us_ = max(max_buffer_write_us_, write_us_duration);
+
+    if (frames_counter_ == stats_modulo_) {
+        print_stats();
+        reset_counters();
+    }
+}
+
+void BufferStats::print_stats()
+{
+    float avg_buffer_write_us = total_buffer_write_us_ / frames_counter_;
+
+    cout << "sf_buffer:device_name " << source_name_;
+    cout << " sf_buffer:avg_buffer_write_us " << avg_buffer_write_us;
+    cout << " sf_buffer:max_buffer_write_us " << max_buffer_write_us_;
+    cout << endl;
+}