Adding microphone volume support to chrome.

media/audio/audio_io.h

Index: media/audio/audio_io.h
diff --git a/media/audio/audio_io.h b/media/audio/audio_io.h
index 173f4f54363b65903b86baab30ecb9f0b5a29f58..c059e9b91fbfcd2d8377a6cfa6cb6d91dd91e69d 100644
--- a/media/audio/audio_io.h
+++ b/media/audio/audio_io.h
@@ -154,6 +154,15 @@ class MEDIA_EXPORT AudioInputStream {
   // Close the stream. This also generates AudioInputCallback::OnClose(). This
   // should be the last call made on this object.
   virtual void Close() = 0;
+
+  // Sets the microphone analog volume, with range [0.0, max_volume] inclusive.
+  virtual void SetMicVolume(double volume) = 0;
+
+  // Gets the microphone analog volume, with range [0.0, max_volume] inclusive.
+  virtual void GetMicVolume(double* volume) = 0;
+
+  // Gets the maximum microphone analog volume.
+  virtual void GetMaxMicVolume(double* max_volume) = 0;

[henrika (OOO until Aug 14), 2012/02/21 14:03:47]

What about moving this API up to make it more clear what max_volume is? Also, we
could use bool here instead.

[no longer working on chromium, 2012/02/21 18:01:38]

Done.

 };
 
 #endif  // MEDIA_AUDIO_AUDIO_IO_H_