Injectable audio encoders: WebRtcVoiceEngine and company

webrtc/audio/audio_send_stream.h

Index: webrtc/audio/audio_send_stream.h
diff --git a/webrtc/audio/audio_send_stream.h b/webrtc/audio/audio_send_stream.h
index 5ee49da91a7a1469285d1fcf675c39c53a43ac5c..efd0a6e960335f15ccdbd638522f01c9d7c962e0 100644
--- a/webrtc/audio/audio_send_stream.h
+++ b/webrtc/audio/audio_send_stream.h
@@ -45,6 +45,8 @@ class AudioSendStream final : public webrtc::AudioSendStream,
                   RtcpRttStats* rtcp_rtt_stats);
   ~AudioSendStream() override;
 
+  void Reconfigure(const webrtc::AudioSendStream::Config& config) override;

[the sun, 2017/04/04 23:02:54]

nit: looks like it should go under the below comment

+
   // webrtc::AudioSendStream implementation.
   void Start() override;
   void Stop() override;
@@ -68,14 +70,23 @@ class AudioSendStream final : public webrtc::AudioSendStream,
  private:
   VoiceEngine* voice_engine() const;
 
-  bool SetupSendCodec();
+  bool SetupSendCodec(const Config& new_config);
+  bool ReconfigureSendCodec(const Config& new_config);
+  void ReconfigureANA(const Config& new_config);
+  void ReconfigureCNG(const Config& new_config);
+  void ReconfigureBitrateObserver(const Config& new_config);
+
+  void ConfigureBitrateObserver(int min_bitrate_bps, int max_bitrate_bps);
+  void RemoveBitrateObserver();
 
   rtc::ThreadChecker thread_checker_;
   rtc::TaskQueue* worker_queue_;
-  const webrtc::AudioSendStream::Config config_;
+  webrtc::AudioSendStream::Config config_;
   rtc::scoped_refptr<webrtc::AudioState> audio_state_;
   std::unique_ptr<voe::ChannelProxy> channel_proxy_;
+  RtcEventLog* const event_log_;
 
+  PacketRouter* const packet_router_;
   BitrateAllocator* const bitrate_allocator_;
   CongestionController* const congestion_controller_;
   std::unique_ptr<RtcpBandwidthObserver> bandwidth_observer_;