merge format and formatdecenc into formats (#222)

pkg/formats/rtplpcm/encoder_test.go

@@ -0,0 +1,108 @@
+package rtplpcm
+
+import (
+	"bytes"
+	"testing"
+	"time"
+
+	"github.com/pion/rtp"
+	"github.com/stretchr/testify/require"
+)
+
+var cases = []struct {
+	name    string
+	samples []byte
+	pts     time.Duration
+	pkts    []*rtp.Packet
+}{
+	{
+		"single",
+		[]byte{0x01, 0x02, 0x03, 0x04, 0x05, 0x06},
+		25 * time.Millisecond,
+		[]*rtp.Packet{
+			{
+				Header: rtp.Header{
+					Version:        2,
+					Marker:         false,
+					PayloadType:    96,
+					SequenceNumber: 17645,
+					Timestamp:      2289527557,
+					SSRC:           0x9dbb7812,
+				},
+				Payload: []byte{0x01, 0x02, 0x03, 0x04, 0x05, 0x06},
+			},
+		},
+	},
+	{
+		"splitted",
+		bytes.Repeat([]byte{0x41, 0x42, 0x43}, 680),
+		25 * time.Millisecond,
+		[]*rtp.Packet{
+			{
+				Header: rtp.Header{
+					Version:        2,
+					Marker:         false,
+					PayloadType:    96,
+					SequenceNumber: 17645,
+					Timestamp:      2289527557,
+					SSRC:           0x9dbb7812,
+				},
+				Payload: bytes.Repeat([]byte{0x41, 0x42, 0x43}, 486),
+			},
+			{
+				Header: rtp.Header{
+					Version:        2,
+					Marker:         false,
+					PayloadType:    96,
+					SequenceNumber: 17646,
+					Timestamp:      2289527800,
+					SSRC:           0x9dbb7812,
+				},
+				Payload: bytes.Repeat([]byte{0x41, 0x42, 0x43}, 194),
+			},
+		},
+	},
+}
+
+func TestEncode(t *testing.T) {
+	for _, ca := range cases {
+		t.Run(ca.name, func(t *testing.T) {
+			e := &Encoder{
+				PayloadType: 96,
+				SSRC: func() *uint32 {
+					v := uint32(0x9dbb7812)
+					return &v
+				}(),
+				InitialSequenceNumber: func() *uint16 {
+					v := uint16(0x44ed)
+					return &v
+				}(),
+				InitialTimestamp: func() *uint32 {
+					v := uint32(0x88776655)
+					return &v
+				}(),
+				BitDepth:     24,
+				SampleRate:   48000,
+				ChannelCount: 2,
+			}
+			e.Init()
+
+			pkts, err := e.Encode(ca.samples, ca.pts)
+			require.NoError(t, err)
+			require.Equal(t, ca.pkts, pkts)
+		})
+	}
+}
+
+func TestEncodeRandomInitialState(t *testing.T) {
+	e := &Encoder{
+		PayloadType:  96,
+		BitDepth:     24,
+		SampleRate:   48000,
+		ChannelCount: 2,
+	}
+	e.Init()
+	require.NotEqual(t, nil, e.SSRC)
+	require.NotEqual(t, nil, e.InitialSequenceNumber)
+	require.NotEqual(t, nil, e.InitialTimestamp)
+}