sdp交换存在问题

drivers/audio/wavfifo.go

@@ -71,7 +71,6 @@ func (w *PCMStreamDriver) AudioRecord(p prop.Media) (audio.Reader, error) {
 		case <-w.closed:
 			return nil, func() {}, io.EOF
 		case pcmData, ok := <-w.PCM:
-			logrus.Debug("got %d bytes pcm data", len(pcmData))
 			if !ok {
 				return nil, func() {}, io.ErrClosedPipe
 			}
@@ -85,7 +84,7 @@ func (w *PCMStreamDriver) AudioRecord(p prop.Media) (audio.Reader, error) {
 func bytesTo16BitSamples(b []byte) []int16 {
 	samples := make([]int16, 0)
 	for i := 0; i < len(b); i += 2 {
-		sample := binary.LittleEndian.Uint16(b[i : i+1])
+		sample := binary.LittleEndian.Uint16(b[i : i+2])
 		samples = append(samples, int16(sample))
 	}
 	return samples

drivers/video/ppm.go

@@ -52,6 +52,7 @@ func (v *PPMStreamDriver) Properties() []prop.Media {
 }
 
 func (v *PPMStreamDriver) VideoRecord(p prop.Media) (video.Reader, error) {
+	logrus.Debug(p)
 	r := video.ReaderFunc(func() (img image.Image, release func(), err error) {
 		canvas := image.NewYCbCr(
 			image.Rect(0, 0, p.Width, p.Height),