Implementation of 'AudioContext.getOutputTimestamp' method

third_party/WebKit/public/platform/WebAudioDevice.h

 /*
  * Copyright (C) 2010 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
  * 2.  Redistributions in binary form must reproduce the above copyright
@@ skipping 24 matching lines @@
 namespace blink {
 
 // Abstract interface to the Chromium audio system.
 
 class WebAudioDevice {
  public:
   class BLINK_PLATFORM_EXPORT RenderCallback {
    public:
     virtual void render(const WebVector<float*>& sourceData,
                         const WebVector<float*>& destinationData,
-                        size_t numberOfFrames);
+                        size_t numberOfFrames,
+                        double delay,
+                        double delayTimestamp,

[sandersd (OOO until July 31), 2016/12/01 23:55:00]

This is a rather strange way to represent timestamps, and results in bad-looking
media code. Is this the standard representation of point-of-time in Blink?

[Mikhail, 2016/12/02 11:48:21]

Yeah, time stamps in blink are usually represented as 'double' (pls. see
https://cs.chromium.org/chromium/src/third_party/WebKit/Source/wtf/CurrentTime.h
)

+                        size_t priorFramesSkipped);
 
    protected:
     virtual ~RenderCallback();
   };
 
   virtual ~WebAudioDevice() {}
 
   virtual void start() = 0;
   virtual void stop() = 0;
   virtual double sampleRate() = 0;
 };
 
 }  // namespace blink
 
 #endif  // WebAudioDevice_h