声音部分的代码仍需调试，现在panic

lib/audiodriver/wavfifo.go

@@ -23,7 +23,7 @@ const BitsPerByte = 8
 
 type WavFIFODriver struct {
 	PCM        <-chan [BufferSize]byte
-	WaveHeader <-chan *WavHeader
+	WaveHeader *WavHeader
 	closed     <-chan struct{}
 	cancel     func()
 }
@@ -42,19 +42,19 @@ func (w *WavFIFODriver) Open() error {
 }
 
 func (w *WavFIFODriver) Close() error {
-	defer w.cancel()
+	w.cancel()
 	return nil
 }
 
 func (w *WavFIFODriver) Properties() []prop.Media {
-	waveHeader := <-w.WaveHeader
-	logrus.Debugf("wave header: %v", waveHeader)
+	logrus.Debugf("wave header: %v", w.WaveHeader)
 	return []prop.Media{
 		{
 			Audio: prop.Audio{
-				SampleRate:    int(waveHeader.SampleRate),
-				ChannelCount:  int(waveHeader.NumChannels),
-				Latency:       waveHeader.GetLatnecy(),
+				SampleRate:    int(w.WaveHeader.SampleRate),
+				ChannelCount:  int(w.WaveHeader.NumChannels),
+				SampleSize:    int(w.WaveHeader.BitsPerSample),
+				Latency:       w.WaveHeader.GetLatnecy(),
 				IsFloat:       false, // just 8bit or 16bit with qemu
 				IsBigEndian:   false, // qemu should be little endian
 				IsInterleaved: true,
@@ -64,13 +64,14 @@ func (w *WavFIFODriver) Properties() []prop.Media {
 }
 
 func (w *WavFIFODriver) AudioRecord(p prop.Media) (audio.Reader, error) {
-	a := wave.NewInt16Interleaved(wave.ChunkInfo{
-		Len:          BufferSize / int(p.SampleSize/BitsPerByte),
-		Channels:     p.ChannelCount,
-		SamplingRate: p.SampleRate,
-	})
+	logrus.Debug(p)
 
 	reader := func() (wave.Audio, func(), error) {
+		a := wave.NewInt16Interleaved(wave.ChunkInfo{
+			Len:          BufferSize / int(p.SampleSize/BitsPerByte),
+			Channels:     p.ChannelCount,
+			SamplingRate: p.SampleRate,
+		})
 		select {
 		case <-w.closed:
 			return nil, func() {}, io.EOF

lib/qemuconnection/events.go

@@ -29,7 +29,7 @@ type CommandLine struct {
 }
 
 func ParseEvent(b []byte) (*Event, error) {
-	var event *Event
+	event := &Event{}
 	if err := json.Unmarshal(b, event); err != nil {
 		return nil, err
 	}

lib/webrtcconnection/connection.go

@@ -6,6 +6,7 @@ import (
 	"github.com/pion/mediadevices/pkg/codec/opus"
 	"github.com/pion/mediadevices/pkg/codec/x264"
 	"github.com/pion/mediadevices/pkg/driver"
+	"github.com/pion/mediadevices/pkg/prop"
 	"github.com/pion/webrtc/v3"
 	"github.com/sirupsen/logrus"
 )
@@ -45,7 +46,10 @@ func New(o *Options) (*Connection, error) {
 	}
 
 	s, err := mediadevices.GetUserMedia(mediadevices.MediaStreamConstraints{
-		Video: func(mtc *mediadevices.MediaTrackConstraints) {},
+		Video: func(mtc *mediadevices.MediaTrackConstraints) {
+			mtc.Height = prop.Int(o.Video.Height)
+			mtc.Width = prop.Int(o.Video.Width)
+		},
 		Audio: func(mtc *mediadevices.MediaTrackConstraints) {},
 		Codec: codecSelector,
 	})
@@ -84,7 +88,7 @@ func (c *Connection) Regist(offer *webrtc.SessionDescription) (*webrtc.SessionDe
 
 	for _, track := range c.stream.GetTracks() {
 		track.OnEnded(func(err error) {
-			logrus.Errorf("Track (ID: %s) ended with error: %v", track.ID(), err)
+			logrus.Errorf("Track (ID: %s, kind: %s) ended with error: %v", track.ID(), track.Kind().String(), err)
 		})
 		_, err := rtc.AddTransceiverFromTrack(track, webrtc.RTPTransceiverInit{
 			Direction: webrtc.RTPTransceiverDirectionSendonly,