merge format and formatdecenc into formats (#222)

pkg/formats/rtplpcm/decoder_test.go

@@ -0,0 +1,78 @@
+//go:build go1.18
+// +build go1.18
+
+package rtplpcm
+
+import (
+	"testing"
+	"time"
+
+	"github.com/pion/rtp"
+	"github.com/stretchr/testify/require"
+)
+
+func TestDecode(t *testing.T) {
+	for _, ca := range cases {
+		t.Run(ca.name, func(t *testing.T) {
+			d := &Decoder{
+				BitDepth:     24,
+				SampleRate:   48000,
+				ChannelCount: 2,
+			}
+			d.Init()
+
+			// send an initial packet downstream
+			// in order to compute the right timestamp,
+			// that is relative to the initial packet
+			pkt := rtp.Packet{
+				Header: rtp.Header{
+					Version:        2,
+					Marker:         false,
+					PayloadType:    0,
+					SequenceNumber: 17645,
+					Timestamp:      2289526357,
+					SSRC:           0x9dbb7812,
+				},
+				Payload: []byte{0x01, 0x02, 0x03, 0x04, 0x05, 0x06},
+			}
+			_, _, err := d.Decode(&pkt)
+			require.NoError(t, err)
+
+			var samples []byte
+			expPTS := ca.pts
+
+			for _, pkt := range ca.pkts {
+				partial, pts, err := d.Decode(pkt)
+				require.NoError(t, err)
+				require.Equal(t, expPTS, pts)
+				samples = append(samples, partial...)
+				expPTS += time.Duration(len(partial)/(24*2/8)) * time.Second / 48000
+			}
+
+			require.Equal(t, ca.samples, samples)
+		})
+	}
+}
+
+func FuzzDecoderUnmarshal(f *testing.F) {
+	d := &Decoder{
+		BitDepth:     24,
+		SampleRate:   48000,
+		ChannelCount: 2,
+	}
+	d.Init()
+
+	f.Fuzz(func(t *testing.T, b []byte) {
+		d.Decode(&rtp.Packet{
+			Header: rtp.Header{
+				Version:        2,
+				Marker:         false,
+				PayloadType:    96,
+				SequenceNumber: 17645,
+				Timestamp:      2289527317,
+				SSRC:           0x9dbb7812,
+			},
+			Payload: b,
+		})
+	})
+}