clock: Make ProceedAudioTimer take a number of frames

audio/audio.go

@@ -260,10 +260,7 @@ func (c *Context) loop() {
 
 		written += int64(n)
 		fs := written/int64(bytesPerFrame) - prevWritten/int64(bytesPerFrame)
-		for fs > 0 {
-			clock.ProceedAudioTimer()
-			fs--
-		}
+		clock.ProceedAudioTimer(fs)
 		prevWritten = written
 	}
 }

internal/clock/clock.go

@@ -66,10 +66,10 @@ func RegisterPing(pingFunc func()) {
 	m.Unlock()
 }
 
-// ProceedAudioTimer increments the audio time by a frame.
-func ProceedAudioTimer() {
+// ProceedAudioTimer increments the audio time by the given number of frames.
+func ProceedAudioTimer(num int64) {
 	m.Lock()
-	audioTimeInFrames++
+	audioTimeInFrames += num
 	m.Unlock()
 }