Flip the left/right speaker when the device is in yoga mode.

chromeos/audio/cras_audio_handler.h

 // Copyright (c) 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROMEOS_AUDIO_CRAS_AUDIO_HANDLER_H_
 #define CHROMEOS_AUDIO_CRAS_AUDIO_HANDLER_H_
 
 #include <queue>
 
 #include "base/basictypes.h"
@@ skipping 166 matching lines @@
   // Removes an active audio node.
   // If |node_id| is the only active input/output node, or is an additional
   // active input/output node, it will be removed and becomes inactive.
   // Note: It is not proper call this api to remove the primary active node
   // while there are additional active nodes.
   virtual void RemoveActiveNode(uint64 node_id);
 
   // Removes all active audio nodes, including the primary active ones.
   virtual void RemoveAllActiveNodes();
 
+  // Swaps the left and right channel of the primary active output device.
+  // Swap the left and right channel if |swap| is true; otherwise, swap the left
+  // and right channel back to the normal mode.
+  // If the feature is not supported on the primary active output node, nothing
+  // happens.
+  virtual void SwapLeftRight(bool swap);
+
   // Enables error logging.
   virtual void LogErrors();
 
  protected:
   explicit CrasAudioHandler(
       scoped_refptr<AudioDevicesPrefHandler> audio_pref_handler);
   virtual ~CrasAudioHandler();
 
  private:
   friend class CrasAudioHandlerTest;
@@ skipping 115 matching lines @@
   bool log_errors_;
 
   base::WeakPtrFactory<CrasAudioHandler> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(CrasAudioHandler);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROMEOS_AUDIO_CRAS_AUDIO_HANDLER_H_