Compute down track RTT.

rtptime/rtptime.go

@@ -10,7 +10,7 @@ func FromDuration(d time.Duration, hz uint32) uint64 {
 	return uint64(d) * uint64(hz) / uint64(time.Second)
 }
 
-func toDuration(tm uint64, hz uint32) time.Duration {
+func ToDuration(tm uint64, hz uint32) time.Duration {
 	return time.Duration(tm * uint64(time.Second) / uint64(hz))
 }
 
@@ -29,6 +29,10 @@ func Jiffies() uint64 {
 	return Now(JiffiesPerSec)
 }
 
+func TimeToJiffies(tm time.Time) uint64 {
+	return FromDuration(tm.Sub(epoch), JiffiesPerSec)
+}
+
 var ntpEpoch = time.Date(1900, 1, 1, 0, 0, 0, 0, time.UTC)
 
 func NTPToTime(ntp uint64) time.Time {

rtptime/rtptime_test.go

@@ -11,7 +11,7 @@ func TestDuration(t *testing.T) {
 		t.Errorf("Expected 48000, got %v", a)
 	}
 
-	b := toDuration(48000, 48000)
+	b := ToDuration(48000, 48000)
 	if b != time.Second {
 		t.Errorf("Expected %v, got %v", time.Second, b)
 	}