Fix start/stop of html5 audio stream and race condition when pausing.

content/renderer/media/audio_device.h

Index: content/renderer/media/audio_device.h
===================================================================
--- content/renderer/media/audio_device.h	(revision 113847)
+++ content/renderer/media/audio_device.h	(working copy)
@@ -81,9 +81,10 @@
  public:
   class CONTENT_EXPORT RenderCallback {
    public:
-    virtual void Render(const std::vector<float*>& audio_data,
-                        size_t number_of_frames,
-                        size_t audio_delay_milliseconds) = 0;
+    // Fills entire buffer, returns actual number of frames it got from source.
+    virtual size_t Render(const std::vector<float*>& audio_data,

[Chris Rogers, 2011/12/14 20:48:35]

probably should add comment about the return value

[enal1, 2011/12/14 22:14:54]

Made existing comment more clear.

+                          size_t number_of_frames,
+                          size_t audio_delay_milliseconds) = 0;
    protected:
     virtual ~RenderCallback() {}
   };
@@ -162,7 +163,8 @@
   // Method called on the audio thread (+ one call on the IO thread) ----------
   // Calls the client's callback for rendering audio. There will also be one
   // initial call on the IO thread before the audio thread has been created.
-  void FireRenderCallback(int16* data);
+  // Returns actual number of filled frames.
+  size_t FireRenderCallback(int16* data);

[Chris Rogers, 2011/12/14 20:48:35]

comment about return value

[enal1, 2011/12/14 22:14:54]

Done.

 
   // DelegateSimpleThread::Delegate implementation.
   virtual void Run() OVERRIDE;