音频流仍然存在问题，后续debug

lib/audiodriver/wavheader.go

@@ -11,9 +11,10 @@ import (
 
 // Skip riff header and `fmt ` just 16 bytes
 const (
-	FmtHeaderOffset        int64 = 0x0c
-	FmtHeaderIDSize        int64 = 4
-	FmtHeaderChunkSizeSize int64 = 4
+	FmtHeaderOffset        = 0x0c
+	FmtHeaderIDSize        = 4
+	FmtHeaderChunkSizeSize = 4
+	FmtHeaderSizeDefault   = 16
 )
 
 type WavHeader struct {
@@ -35,6 +36,17 @@ func NewHeader(f io.Reader) (*WavHeader, error) {
 	return w, nil
 }
 
+func DefaultHeader() *WavHeader {
+	return &WavHeader{
+		Size:          uint32(FmtHeaderSizeDefault),
+		AudioFormat:   1,
+		NumChannels:   2,
+		SampleRate:    48000, // opus only support 48kHz
+		BlockAlign:    4,
+		BitsPerSample: 16,
+	}
+}
+
 func (w *WavHeader) Parse(f io.Reader) error {
 	// skip headers
 	var headers [FmtHeaderOffset]byte