math: revised timestamp calculations around epsilon

2022-05-29 11:13:05 -07:00
parent bbf6f8f9f9
commit 29908f2d8b
3 changed files with 33 additions and 3 deletions
@@ -304,14 +304,24 @@ int64_t Timecode::time_to_timestamp(const double &time, const rational &timebase
    return 0;
  }

+  const double eps = 0.000000000001;
+
  switch (floor) {
  case kRound:
  default:
    return qRound64(d);
  case kFloor:
-    return qFloor(d);
+    if (d > qCeil(d)-eps) {
+      return qCeil(d);
+    } else {
+      return qFloor(d);
+    }
  case kCeil:
-    return qCeil(d);
+    if (d < qFloor(d)+eps) {
+      return qFloor(d);
+    } else {
+      return qCeil(d);
+    }
  }
 }