Add support pcm_s16le audio

pkg/webrtc/consumer.go

@@ -3,6 +3,7 @@ package webrtc
 import (
 	"encoding/json"
 	"errors"
+
 	"github.com/AlexxIT/go2rtc/pkg/core"
 	"github.com/AlexxIT/go2rtc/pkg/h264"
 	"github.com/AlexxIT/go2rtc/pkg/h265"
@@ -63,13 +64,13 @@ func (c *Conn) AddTrack(media *core.Media, codec *core.Codec, track *core.Receiv
 			sender.Handler = h265.RTPDepay(track.Codec, sender.Handler)
 		}
 
-	case core.CodecPCMA, core.CodecPCMU, core.CodecPCM:
+	case core.CodecPCMA, core.CodecPCMU, core.CodecPCM, core.CodecPCML:
 		if codec.ClockRate == 0 {
-			if codec.Name == core.CodecPCM {
+			if codec.Name == core.CodecPCM || codec.Name == core.CodecPCML {
 				codec.Name = core.CodecPCMA
 			}
 			codec.ClockRate = 8000
-			sender.Handler = pcm.Resample(track.Codec, 8000, sender.Handler)
+			sender.Handler = pcm.ResampleToPCMA(track.Codec, 8000, sender.Handler)
 		}
 
 		// Fix audio quality https://github.com/AlexxIT/WebRTC/issues/500

pkg/webrtc/helpers.go

@@ -3,16 +3,17 @@ package webrtc
 import (
 	"errors"
 	"fmt"
-	"github.com/AlexxIT/go2rtc/pkg/core"
-	"github.com/pion/ice/v2"
-	"github.com/pion/sdp/v3"
-	"github.com/pion/stun"
-	"github.com/pion/webrtc/v3"
 	"hash/crc32"
 	"net"
 	"strconv"
 	"strings"
 	"time"
+
+	"github.com/AlexxIT/go2rtc/pkg/core"
+	"github.com/pion/ice/v2"
+	"github.com/pion/sdp/v3"
+	"github.com/pion/stun"
+	"github.com/pion/webrtc/v3"
 )
 
 func UnmarshalMedias(descriptions []*sdp.MediaDescription) (medias []*core.Media) {
@@ -52,13 +53,15 @@ func UnmarshalMedias(descriptions []*sdp.MediaDescription) (medias []*core.Media
 	return
 }
 
+// WithResampling - will add for consumer: PCMA/0, PCMU/0, PCM/0, PCML/0
+// so it can add resampling for PCMA/PCMU and repack for PCM/PCML
 func WithResampling(medias []*core.Media) []*core.Media {
 	for _, media := range medias {
 		if media.Kind != core.KindAudio || media.Direction != core.DirectionSendonly {
 			continue
 		}
 
-		var pcma, pcmu, pcm *core.Codec
+		var pcma, pcmu, pcm, pcml *core.Codec
 
 		for _, codec := range media.Codecs {
 			switch codec.Name {
@@ -76,6 +79,8 @@ func WithResampling(medias []*core.Media) []*core.Media {
 				}
 			case core.CodecPCM:
 				pcm = codec
+			case core.CodecPCML:
+				pcml = codec
 			}
 		}
 
@@ -94,6 +99,11 @@ func WithResampling(medias []*core.Media) []*core.Media {
 			pcm.Name = core.CodecPCM
 			media.Codecs = append(media.Codecs, pcm)
 		}
+		if pcma != nil && pcml == nil {
+			pcml = pcma.Clone()
+			pcml.Name = core.CodecPCML
+			media.Codecs = append(media.Codecs, pcml)
+		}
 	}
 
 	return medias