add MP4A-LATM decoder and encoder (#299)

pkg/formats/rtpmpeg4audiolatm/decoder_test.go

@@ -0,0 +1,84 @@
+package rtpmpeg4audiolatm
+
+import (
+	"testing"
+
+	"github.com/bluenviron/mediacommon/pkg/codecs/mpeg4audio"
+	"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{
+				Config: ca.config,
+			}
+			d.Init()
+
+			var au []byte
+			var err error
+
+			for _, pkt := range ca.pkts {
+				clone := pkt.Clone()
+
+				au, _, err = d.Decode(pkt)
+
+				// test input integrity
+				require.Equal(t, clone, pkt)
+
+				if err == ErrMorePacketsNeeded {
+					continue
+				}
+
+				require.NoError(t, err)
+			}
+
+			require.Equal(t, ca.au, au)
+		})
+	}
+}
+
+func FuzzDecoder(f *testing.F) {
+	f.Fuzz(func(t *testing.T, a []byte, am bool, b []byte, bm bool) {
+		d := &Decoder{
+			Config: &mpeg4audio.StreamMuxConfig{
+				Programs: []*mpeg4audio.StreamMuxConfigProgram{{
+					Layers: []*mpeg4audio.StreamMuxConfigLayer{{
+						AudioSpecificConfig: &mpeg4audio.AudioSpecificConfig{
+							Type:         2,
+							SampleRate:   48000,
+							ChannelCount: 2,
+						},
+						LatmBufferFullness: 255,
+					}},
+				}},
+			},
+		}
+		d.Init()
+
+		d.Decode(&rtp.Packet{
+			Header: rtp.Header{
+				Version:        2,
+				Marker:         am,
+				PayloadType:    96,
+				SequenceNumber: 17645,
+				Timestamp:      2289527317,
+				SSRC:           0x9dbb7812,
+			},
+			Payload: a,
+		})
+
+		d.Decode(&rtp.Packet{
+			Header: rtp.Header{
+				Version:        2,
+				Marker:         bm,
+				PayloadType:    96,
+				SequenceNumber: 17646,
+				Timestamp:      2289527317,
+				SSRC:           0x9dbb7812,
+			},
+			Payload: b,
+		})
+	})
+}