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

chromeos/dbus/cras_audio_client.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_DBUS_CRAS_AUDIO_CLIENT_H_
 #define CHROMEOS_DBUS_CRAS_AUDIO_CLIENT_H_
 
 #include "base/callback.h"
 #include "base/observer_list.h"
 #include "chromeos/chromeos_export.h"
@@ skipping 97 matching lines @@
   // Adds input node |node_id| to the active outputs list. This is used to add
   // an additional active output node besides the one set by SetActiveInputNode.
   // Note that this action will not trigger an ActiveOutputNodeChanged event
   // and nothing will happen if the |node_id| has already been set as active.
   virtual void AddActiveOutputNode(uint64 node_id) = 0;
 
   // Removes output node |node_id| from the active output list. This is used for
   // removing an active output node added by AddActiveOutputNode.
   virtual void RemoveActiveOutputNode(uint64 node_id) = 0;
 
+  // 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.
+  // The dbus message will be dropped if this feature is not supported on the
+  // |node_id|.
+  virtual void SwapLeftRight(uint64 node_id, bool swap) = 0;
+
   // Creates the instance.
   static CrasAudioClient* Create();
 
  protected:
   // Create() should be used instead.
   CrasAudioClient();
 
  private:
   DISALLOW_COPY_AND_ASSIGN(CrasAudioClient);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROMEOS_DBUS_CRAS_AUDIO_CLIENT_H_