Remove the VoiceEngineObserver callback interface.

voice_engine/include/voe_base.h

 /*
  *  Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
@@ skipping 30 matching lines @@
 
 namespace webrtc {
 
 class AudioDeviceModule;
 class AudioProcessing;
 class AudioTransport;
 namespace voe {
 class TransmitMixer;
 }  // namespace voe
 
-// VoiceEngineObserver
-class WEBRTC_DLLEXPORT VoiceEngineObserver {
- public:
-  // This method will be called after the occurrence of any runtime error
-  // code, or warning notification, when the observer interface has been
-  // installed using VoEBase::RegisterVoiceEngineObserver().
-  virtual void CallbackOnError(int channel, int errCode) = 0;
-
- protected:
-  virtual ~VoiceEngineObserver() {}
-};
-
 // VoiceEngine
 class WEBRTC_DLLEXPORT VoiceEngine {
  public:
   // Creates a VoiceEngine object, which can then be used to acquire
   // sub-APIs. Returns NULL on failure.
   static VoiceEngine* Create();
 
   // Deletes a created VoiceEngine object and releases the utilized resources.
   // Note that if there are outstanding references held via other interfaces,
   // the voice engine instance will not actually be deleted until those
@@ skipping 16 matching lines @@
   // Factory for the VoEBase sub-API. Increases an internal reference
   // counter if successful. Returns NULL if the API is not supported or if
   // construction fails.
   static VoEBase* GetInterface(VoiceEngine* voiceEngine);
 
   // Releases the VoEBase sub-API and decreases an internal reference
   // counter. Returns the new reference count. This value should be zero
   // for all sub-APIs before the VoiceEngine object can be safely deleted.
   virtual int Release() = 0;
 
-  // Installs the observer class to enable runtime error control and
-  // warning notifications. Returns -1 in case of an error, 0 otherwise.
-  virtual int RegisterVoiceEngineObserver(VoiceEngineObserver& observer) = 0;
-
-  // Removes and disables the observer class for runtime error control
-  // and warning notifications. Returns 0.
-  virtual int DeRegisterVoiceEngineObserver() = 0;
-
   // Initializes all common parts of the VoiceEngine; e.g. all
   // encoders/decoders, the sound card and core receiving components.
   // This method also makes it possible to install some user-defined external
   // modules:
   // - The Audio Device Module (ADM) which implements all the audio layer
   // functionality in a separate (reference counted) module.
   // - The AudioProcessing module handles capture-side processing.
   // - An AudioDecoderFactory - used to create audio decoders.
   // If NULL is passed for either of ADM or AudioDecoderFactory, VoiceEngine
   // will create its own. Returns -1 in case of an error, 0 otherwise.
@@ skipping 47 matching lines @@
   virtual AudioTransport* audio_transport() { return NULL; }
 
  protected:
   VoEBase() {}
   virtual ~VoEBase() {}
 };
 
 }  // namespace webrtc
 
 #endif  //  VOICE_ENGINE_VOE_BASE_H_