audio/internal/go2cpp: Fix C++ side and remove the preparation

audio/internal/go2cpp/player_js.go

@@ -22,19 +22,13 @@ import (
 )
 
 type Context struct {
-	v               js.Value
-	sampleRate      int
-	channelNum      int
-	bitDepthInBytes int
+	v js.Value
 }
 
 func NewContext(sampleRate int, channelNum, bitDepthInBytes int) *Context {
 	v := js.Global().Get("go2cpp").Call("createAudio", sampleRate, channelNum, bitDepthInBytes)
 	return &Context{
-		v:               v,
-		sampleRate:      sampleRate,
-		channelNum:      channelNum,
-		bitDepthInBytes: bitDepthInBytes,
+		v: v,
 	}
 }
 
@@ -109,22 +103,7 @@ func (p *Player) Play() {
 		p.v.Set("volume", p.volume)
 		runloop = true
 	}
-
 	p.v.Call("play")
-
-	// Prepare the first data as soon as possible, or the audio can get stuck.
-	// TODO: Get the appropriate buffer size from the C++ side.
-	buf := make([]byte, p.context.sampleRate*p.context.channelNum*p.context.bitDepthInBytes/4)
-	n, err := p.src.Read(buf)
-	if err != nil && err != io.EOF {
-		p.setError(err)
-		return
-	}
-	if n > 0 {
-		dst := js.Global().Get("Uint8Array").New(n)
-		p.writeImpl(dst, buf[:n])
-	}
-
 	if runloop {
 		go p.loop()
 	}