Fix audio playback stutter

audio.go

@@ -24,30 +24,32 @@ type audioStruct struct {
 var audio audioStruct
 
 func (a *audioStruct) playLoop() {
+	frameBuf := make([]byte, 1920)
+
 	for {
 		<-a.canPlay
 
-		// Trying to read the whole buffer.
-		d := make([]byte, a.playBuf.Len())
-		bytesToWrite, err := a.playBuf.Read(d)
-		if err != nil {
-			log.Error(err)
-			continue
-		}
-
-		for {
-			written, err := a.source.Write(d)
+		for a.playBuf.Len() > 0 {
+			bytesToWrite, err := a.playBuf.Read(frameBuf)
 			if err != nil {
-				if _, ok := err.(*os.PathError); !ok {
-					log.Error(err)
+				log.Error(err)
+				continue
+			}
+
+			for {
+				written, err := a.source.Write(frameBuf[:bytesToWrite])
+				if err != nil {
+					if _, ok := err.(*os.PathError); !ok {
+						log.Error(err)
+					}
+					return
 				}
-				return
+				bytesToWrite -= written
+				if bytesToWrite == 0 {
+					break
+				}
+				frameBuf = frameBuf[written:]
 			}
-			bytesToWrite -= written
-			if bytesToWrite == 0 {
-				break
-			}
-			d = d[written:]
 		}
 	}
 }