Adding cbr support for Opus

webrtc/modules/audio_coding/include/audio_coding_module.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 753 matching lines @@
   // int DisableOpusDtx()
   // If current send codec is Opus, disables its internal DTX.
   //
   // Return value:
   //   -1 if current send codec is not Opus or error occurred in disabling DTX.
   //    0 if Opus DTX is disabled successfully.
   //
   virtual int DisableOpusDtx() = 0;
 
   ///////////////////////////////////////////////////////////////////////////
+  // EnableOpusCbr()

[minyue-webrtc, 2017/03/29 20:45:26]

int

+  // Enable the CBR, if current send codec is Opus.
+  //
+  // Return value:
+  //   -1 if current send codec is not Opus or error occurred in enabling the
+  //      Opus CBR mode.
+  //    0 if Opus CBR is enabled successfully.
+  //
+  virtual int EnableOpusCbr() = 0;
+
+  ///////////////////////////////////////////////////////////////////////////
+  // int DisableOpusCbr()
+  // If current send codec is Opus, disables its internal CBR.
+  //
+  // Return value:
+  //   -1 if current send codec is not Opus or error occurred in disabling CBR.
+  //    0 if Opus CBR is disabled successfully.
+  //
+  virtual int DisableOpusCbr() = 0;
+
+  ///////////////////////////////////////////////////////////////////////////
   //   statistics
   //
 
   ///////////////////////////////////////////////////////////////////////////
   // int32_t  GetNetworkStatistics()
   // Get network statistics. Note that the internal statistics of NetEq are
   // reset by this call.
   //
   // Input:
   //   -network_statistics : a structure that contains network statistics.
@@ skipping 33 matching lines @@
   virtual std::vector<uint16_t> GetNackList(
       int64_t round_trip_time_ms) const = 0;
 
   virtual void GetDecodingCallStatistics(
       AudioDecodingCallStats* call_stats) const = 0;
 };
 
 }  // namespace webrtc
 
 #endif  // WEBRTC_MODULES_AUDIO_CODING_INCLUDE_AUDIO_CODING_MODULE_H_