Add support tapo source

pkg/streamer/helpers.go

@@ -2,6 +2,7 @@ package streamer
 
 import (
 	"strings"
+	"time"
 )
 
 type Info struct {
@@ -50,3 +51,31 @@ func Contains(medias []*Media, media *Media, codec *Codec) bool {
 	}
 	return ok1 && ok2
 }
+
+type Probe struct {
+	deadline time.Time
+	items    map[interface{}]struct{}
+}
+
+func NewProbe(enable bool) *Probe {
+	if enable {
+		return &Probe{
+			deadline: time.Now().Add(time.Second * 3),
+			items:    map[interface{}]struct{}{},
+		}
+	} else {
+		return nil
+	}
+}
+
+// Active return true if probe enabled and not finish
+func (p *Probe) Active() bool {
+	return len(p.items) < 2 && time.Now().Before(p.deadline)
+}
+
+// Append safe to run if Probe is nil
+func (p *Probe) Append(v interface{}) {
+	if p != nil {
+		p.items[v] = struct{}{}
+	}
+}

pkg/streamer/track.go

@@ -21,6 +21,13 @@ func NewTrack(codec *Codec, direction string) *Track {
 	return &Track{Codec: codec, Direction: direction, sinkMu: new(sync.RWMutex)}
 }
 
+func NewTrack2(media *Media, codec *Codec) *Track {
+	if codec == nil {
+		codec = media.Codecs[0]
+	}
+	return &Track{Codec: codec, Direction: media.Direction, sinkMu: new(sync.RWMutex)}
+}
+
 func (t *Track) String() string {
 	s := t.Codec.String()
 	if t.sinkMu.TryRLock() {