Adding cbr support for Opus

webrtc/voice_engine/include/voe_codec.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 119 matching lines @@
   // If send codec is Opus on a specified |channel|, set its DTX. Returns 0 if
   // success, and -1 if failed.
   virtual int SetOpusDtx(int channel, bool enable_dtx) = 0;
 
   // If send codec is Opus on a specified |channel|, return its DTX status.
   // Returns 0 on success, and -1 if failed.
   // TODO(ivoc): Make GetOpusDtxStatus() pure virtual when all deriving classes
   // are updated.
   virtual int GetOpusDtxStatus(int channel, bool* enabled) { return -1; }
 
+  // If send codec is Opus on a specified |channel|, set its CBR. Returns 0 if
+  // success, and -1 if failed.
+  virtual int SetOpusCbr(int channel, bool enable_cbr) = 0;

[the sun, 2017/03/23 08:46:44]

The legacy VoE APIs (e.g. VoECodec) are in the process of being removed. We
shouldn't add new functions to them.

+
+  // If send codec is Opus on a specified |channel|, return its CBR status.
+  // Returns 0 on success, and -1 if failed.
+  virtual int GetOpusCbrStatus(int channel, bool* enabled) { return -1; }
+
  protected:
   VoECodec() {}
   virtual ~VoECodec() {}
 };
 
 }  // namespace webrtc
 
 #endif  //  WEBRTC_VOICE_ENGINE_VOE_CODEC_H