Open backdoor in VoiceEngineImpl to get at the actual voe::Channel objects from an ID.

webrtc/voice_engine/voice_engine_impl.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 @@
 #include "webrtc/voice_engine/voe_rtp_rtcp_impl.h"
 #endif
 #ifdef WEBRTC_VOICE_ENGINE_VIDEO_SYNC_API
 #include "webrtc/voice_engine/voe_video_sync_impl.h"
 #endif
 #ifdef WEBRTC_VOICE_ENGINE_VOLUME_CONTROL_API
 #include "webrtc/voice_engine/voe_volume_control_impl.h"
 #endif
 
 namespace webrtc {
+namespace voe {
+class ChannelProxy;
+}  // namespace voe
 
 class VoiceEngineImpl : public voe::SharedData,  // Must be the first base class
                         public VoiceEngine,
 #ifdef WEBRTC_VOICE_ENGINE_AUDIO_PROCESSING_API
                         public VoEAudioProcessingImpl,
 #endif
 #ifdef WEBRTC_VOICE_ENGINE_CODEC_API
                         public VoECodecImpl,
 #endif
 #ifdef WEBRTC_VOICE_ENGINE_DTMF_API
@@ skipping 60 matching lines @@
         _ref_count(0),
         own_config_(owns_config ? config : NULL) {
   }
   ~VoiceEngineImpl() override { assert(_ref_count.Value() == 0); }
 
   int AddRef();
 
   // This implements the Release() method for all the inherited interfaces.
   int Release() override;
 
+  // Backdoor to access a voe::Channel object without a channel ID. This is only
+  // to be used while refactoring the VoE API!
+  virtual voe::ChannelProxy* GetChannelProxy(int channel_id);
+
  // This is *protected* so that FakeVoiceEngine can inherit from the class and
  // manipulate the reference count. See: fake_voice_engine.h.
  protected:
   Atomic32 _ref_count;
  private:
   rtc::scoped_ptr<const Config> own_config_;
 };
 
 }  // namespace webrtc
 
 #endif  // WEBRTC_VOICE_ENGINE_VOICE_ENGINE_IMPL_H