implement rtcp sender reports

pkg/rtcpsender/rtcpsender_test.go

@@ -0,0 +1,57 @@
+package rtcpsender
+
+import (
+	"testing"
+	"time"
+
+	"github.com/pion/rtcp"
+	"github.com/pion/rtp"
+	"github.com/stretchr/testify/require"
+
+	"github.com/aler9/gortsplib/pkg/base"
+)
+
+func TestRtcpSender(t *testing.T) {
+	rs := New()
+
+	rtpPkt := rtp.Packet{
+		Header: rtp.Header{
+			Version:        2,
+			Marker:         true,
+			PayloadType:    96,
+			SequenceNumber: 946,
+			Timestamp:      1287987768,
+			SSRC:           0xba9da416,
+		},
+		Payload: []byte("\x00\x00"),
+	}
+	byts, _ := rtpPkt.Marshal()
+	ts := time.Date(2008, 05, 20, 22, 15, 20, 0, time.UTC)
+	rs.OnFrame(ts, base.StreamTypeRtp, byts)
+
+	rtpPkt = rtp.Packet{
+		Header: rtp.Header{
+			Version:        2,
+			Marker:         true,
+			PayloadType:    96,
+			SequenceNumber: 947,
+			Timestamp:      1287987768 + 45000,
+			SSRC:           0xba9da416,
+		},
+		Payload: []byte("\x00\x00"),
+	}
+	byts, _ = rtpPkt.Marshal()
+	ts = time.Date(2008, 05, 20, 22, 15, 20, 500000000, time.UTC)
+	rs.OnFrame(ts, base.StreamTypeRtp, byts)
+
+	expectedPkt := rtcp.SenderReport{
+		SSRC:        0xba9da416,
+		NTPTime:     0xcbddcc34999997ff,
+		RTPTime:     0x4d185ae8,
+		PacketCount: 2,
+		OctetCount:  4,
+	}
+	expected, _ := expectedPkt.Marshal()
+	ts = time.Date(2008, 05, 20, 22, 16, 20, 600000000, time.UTC)
+	require.Equal(t, expected, rs.Report(ts))
+}