Completely rearchitect the overall project structure

sampler.go

@@ -0,0 +1,28 @@
+package mediadevices
+
+import (
+	"time"
+
+	"github.com/pion/webrtc/v2/pkg/media"
+)
+
+type sampler struct {
+	clockRate     float64
+	lastTimestamp time.Time
+}
+
+func newSampler(clockRate uint32) *sampler {
+	return &sampler{
+		clockRate:     float64(clockRate),
+		lastTimestamp: time.Now(),
+	}
+}
+
+func (s *sampler) sample(b []byte) media.Sample {
+	now := time.Now()
+	duration := now.Sub(s.lastTimestamp).Seconds()
+	samples := uint32(s.clockRate * duration)
+	s.lastTimestamp = now
+
+	return media.Sample{Data: b, Samples: samples}
+}