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Make duration functions work with negative values.
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parent
d36111d9f9
commit
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5 changed files with 32 additions and 13 deletions
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@ -23,8 +23,10 @@ type Estimator struct {
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// New creates a new estimator that estimates rate over the last interval.
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func New(interval time.Duration) *Estimator {
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return &Estimator{
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interval: rtptime.FromDuration(interval, rtptime.JiffiesPerSec),
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time: rtptime.Now(rtptime.JiffiesPerSec),
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interval: uint64(
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rtptime.FromDuration(interval, rtptime.JiffiesPerSec),
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),
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time: rtptime.Now(rtptime.JiffiesPerSec),
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}
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}
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@ -57,7 +57,7 @@ func (c *webClient) GetStats() *stats.Client {
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maxTid := layer.maxTid
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rate, _ := t.rate.Estimate()
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maxRate, _, _ := t.GetMaxBitrate()
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rtt := rtptime.ToDuration(t.getRTT(),
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rtt := rtptime.ToDuration(int64(t.getRTT()),
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rtptime.JiffiesPerSec)
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loss, jitter := t.stats.Get(jiffies)
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j := time.Duration(jitter) * time.Second /
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@ -138,7 +138,7 @@ func (wp *rtpWriterPool) write(seqno uint16, index uint16, delay uint32, isvideo
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// audio, try again with a delay
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d := delay / uint32(2*len(wp.writers))
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timer := time.NewTimer(rtptime.ToDuration(
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uint64(d), rtptime.JiffiesPerSec,
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int64(d), rtptime.JiffiesPerSec,
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))
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select {
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@ -9,18 +9,25 @@ import (
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var epoch = time.Now()
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// FromDuration converts a time.Duration into units of 1/hz.
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func FromDuration(d time.Duration, hz uint32) uint64 {
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return uint64(d) * uint64(hz) / uint64(time.Second)
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func FromDuration(d time.Duration, hz uint32) int64 {
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return int64(d) * int64(hz) / int64(time.Second)
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}
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// ToDuration converts units of 1/hz into a time.Duration.
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func ToDuration(tm uint64, hz uint32) time.Duration {
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return time.Duration(tm * uint64(time.Second) / uint64(hz))
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func ToDuration(tm int64, hz uint32) time.Duration {
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return time.Duration(tm * int64(time.Second) / int64(hz))
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}
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func sat(a int64) uint64 {
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if a < 0 {
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return 0
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}
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return uint64(a)
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}
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// Now returns the current time in units of 1/hz from an arbitrary origin.
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func Now(hz uint32) uint64 {
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return FromDuration(time.Since(epoch), hz)
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return sat(FromDuration(time.Since(epoch), hz))
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}
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// Microseconds is like Now, but uses microseconds.
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@ -39,7 +46,7 @@ func Jiffies() uint64 {
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// TimeToJiffies converts a time.Time into jiffies.
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func TimeToJiffies(tm time.Time) uint64 {
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return FromDuration(tm.Sub(epoch), JiffiesPerSec)
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return sat(FromDuration(tm.Sub(epoch), JiffiesPerSec))
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}
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// The origin of NTP time.
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@ -11,9 +11,19 @@ func TestDuration(t *testing.T) {
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t.Errorf("Expected 48000, got %v", a)
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}
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b := ToDuration(48000, 48000)
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if b != time.Second {
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t.Errorf("Expected %v, got %v", time.Second, b)
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b := FromDuration(-time.Second, 48000)
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if b != -48000 {
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t.Errorf("Expected -48000, got %v", b)
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}
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c := ToDuration(48000, 48000)
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if c != time.Second {
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t.Errorf("Expected %v, got %v", time.Second, c)
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}
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d := ToDuration(-48000, 48000)
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if d != -time.Second {
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t.Errorf("Expected %v, got %v", -time.Second, d)
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}
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}
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