Time: Replace remaining DeltaTimeval usage with std::chrono

src/zm_event.cpp

@@ -454,13 +454,11 @@ void Event::WriteDbFrames() {
   while (frame_data.size()) {
     Frame *frame = frame_data.front();
     frame_data.pop();
-    frame_insert_sql += stringtf("\n( %" PRIu64 ", %d, '%s', from_unixtime( %ld ), %s%ld.%02ld, %d ),",
+    frame_insert_sql += stringtf("\n( %" PRIu64 ", %d, '%s', from_unixtime( %ld ), %.2f, %d ),",
                                  id, frame->frame_id,
                                  frame_type_names[frame->type],
                                  frame->timestamp.tv_sec,
-        frame->delta.positive ? "" : "-",
+                                 std::chrono::duration_cast<FPSeconds>(frame->delta).count(),
-        frame->delta.sec,
-        frame->delta.fsec,
                                  frame->score);
     if (config.record_event_stats and frame->zone_stats.size()) {
       for (ZoneStats &stats : frame->zone_stats) {
@@ -591,13 +589,7 @@ void Event::AddFrame(
 
     Milliseconds delta_time_ms = std::chrono::duration_cast<Milliseconds>(delta_time);
     // The idea is to write out 1/sec
-    frame_data.push(new Frame(id,
+    frame_data.push(new Frame(id, frames, frame_type, timestamp, delta_time_ms, score, zone_stats));
-                              frames,
-                              frame_type,
-                              timestamp,
-                              zm::chrono::duration_cast<DeltaTimeval, DT_PREC_3>(delta_time_ms),
-                              score,
-                              zone_stats));
     double fps = monitor->get_capture_fps();
     if (write_to_db
         or

src/zm_frame.cpp

@@ -4,7 +4,7 @@ Frame::Frame(event_id_t p_event_id,
              int p_frame_id,
              FrameType p_type,
              struct timeval p_timestamp,
-             const DeltaTimeval &p_delta,
+             Milliseconds p_delta,
              int p_score,
              std::vector<ZoneStats> p_stats)
     : event_id(p_event_id),

src/zm_frame.h

@@ -42,7 +42,7 @@ class Frame {
         int p_frame_id,
         FrameType p_type,
         struct timeval p_timestamp,
-        const DeltaTimeval &p_delta,
+        Milliseconds p_delta,
         int p_score,
         std::vector<ZoneStats> p_stats
   );
@@ -51,7 +51,7 @@ class Frame {
   int frame_id;
   FrameType type;
   struct timeval timestamp;
-  struct DeltaTimeval delta;
+  Milliseconds delta;
   int score;
   std::vector<ZoneStats> zone_stats;
 };

src/zm_monitor.cpp

@@ -484,8 +484,8 @@ void Monitor::Load(MYSQL_ROW dbrow, bool load_zones=true, Purpose p = QUERY) {
   /* "AnalysisFPSLimit, AnalysisUpdateDelay, MaxFPS, AlarmMaxFPS," */
   analysis_fps_limit = dbrow[col] ? strtod(dbrow[col], nullptr) : 0.0; col++;
   analysis_update_delay = strtoul(dbrow[col++], nullptr, 0);
-  capture_delay = (dbrow[col] && atof(dbrow[col])>0.0)?int(DT_PREC_6/atof(dbrow[col])):0; col++;
+  capture_delay = (dbrow[col] && atof(dbrow[col]) > 0.0) ? int(Microseconds::period::den / atof(dbrow[col])) : 0; col++;
-  alarm_capture_delay = (dbrow[col] && atof(dbrow[col])>0.0)?int(DT_PREC_6/atof(dbrow[col])):0; col++;
+  alarm_capture_delay = (dbrow[col] && atof(dbrow[col]) > 0.0) ? int(Microseconds::period::den / atof(dbrow[col])) : 0; col++;
 
   /* "Device, Channel, Format, V4LMultiBuffer, V4LCapturesPerFrame, " // V4L Settings */
   device = dbrow[col] ? dbrow[col] : ""; col++;
@@ -2963,8 +2963,8 @@ bool Monitor::DumpSettings(char *output, bool verbose) {
   sprintf(output+strlen(output), "Alarm Frame Count : %d\n", alarm_frame_count );
   sprintf(output+strlen(output), "Section Length : %d\n", section_length);
   sprintf(output+strlen(output), "Min Section Length : %d\n", min_section_length);
-  sprintf(output+strlen(output), "Maximum FPS : %.2f\n", capture_delay?(double)DT_PREC_3/capture_delay:0.0);
+  sprintf(output+strlen(output), "Maximum FPS : %.2f\n", capture_delay ? (double) Microseconds::period::den / capture_delay : 0.0);
-  sprintf(output+strlen(output), "Alarm Maximum FPS : %.2f\n", alarm_capture_delay?(double)DT_PREC_3/alarm_capture_delay:0.0);
+  sprintf(output+strlen(output), "Alarm Maximum FPS : %.2f\n", alarm_capture_delay ? (double) Microseconds::period::den / alarm_capture_delay : 0.0);
   sprintf(output+strlen(output), "Reference Blend %%ge : %d\n", ref_blend_perc);
   sprintf(output+strlen(output), "Alarm Reference Blend %%ge : %d\n", alarm_ref_blend_perc);
   sprintf(output+strlen(output), "Track Motion : %d\n", track_motion);

src/zm_time.h

@@ -23,33 +23,6 @@
 #include <chrono>
 #include <sys/time.h>
 
-// Structure used for storing the results of the subtraction
-// of one struct timeval from another
-
-struct DeltaTimeval
-{
-  bool positive;
-  unsigned long delta;
-  unsigned long sec;
-  unsigned long fsec;
-  unsigned long prec;
-};
-
-#define DT_GRAN_1000000  1000000
-#define DT_PREC_6    DT_GRAN_1000000
-#define DT_GRAN_100000  100000
-#define DT_PREC_5    DT_GRAN_100000
-#define DT_GRAN_10000  10000
-#define DT_PREC_4    DT_GRAN_10000
-#define DT_GRAN_1000  1000
-#define DT_PREC_3    DT_GRAN_1000
-#define DT_GRAN_100    100
-#define DT_PREC_2    DT_GRAN_100
-#define DT_GRAN_10    10
-#define DT_PREC_1    DT_GRAN_10
-
-#define DT_MAXGRAN    DT_GRAN_1000000
-
 inline struct timeval tvNow() {
   timeval t = {};
   gettimeofday(&t, nullptr);
@@ -99,27 +72,6 @@ struct posix_duration_cast<timeval, std::chrono::duration<Rep, Period>> {
     );
   }
 };
-
-// chrono -> DeltaTimeval caster
-template<typename Rep, typename Period>
-struct posix_duration_cast<std::chrono::duration<Rep, Period>, DeltaTimeval> {
-  template<uint32 Prec>
-  static DeltaTimeval cast(std::chrono::duration<Rep, Period> const &d) {
-    typedef std::chrono::duration<int64, std::ratio<1, Prec>> fsec_t;
-    DeltaTimeval res = {};
-
-    Seconds secs = std::chrono::duration_cast<Seconds>(d);
-    fsec_t fsec = std::chrono::duration_cast<fsec_t, int64, std::ratio<1, Prec>>(d - secs);
-
-    res.positive = fsec >= Seconds::zero();
-    res.delta = abs((secs + fsec).count());
-    res.sec = secs.count();
-    res.fsec = fsec.count();
-    res.prec = Prec;
-
-    return res;
-  }
-};
 }
 
 // chrono -> timeval
@@ -134,13 +86,6 @@ template<typename Duration>
 Duration duration_cast(timeval const &tv) {
   return impl::posix_duration_cast<timeval, Duration>::cast(tv);
 }
-
-// chrono -> DeltaTimeval
-template<typename T, uint32 Prec, typename Rep, typename Period>
-auto duration_cast(std::chrono::duration<Rep, Period> const &d)
--> typename std::enable_if<std::is_same<T, DeltaTimeval>::value, DeltaTimeval>::type {
-  return impl::posix_duration_cast<std::chrono::duration<Rep, Period>, DeltaTimeval>::template cast<Prec>(d);
-}
 }
 }