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 567799c336f7bbaba1436a323148fce71f0f1329..2072b5a38f5546639f06b0d9d0e1cbd18f170568 100644
--- a/webrtc/audio/audio_send_stream.h
+++ b/webrtc/audio/audio_send_stream.h
@@ -47,6 +47,8 @@ class AudioSendStream final : public webrtc::AudioSendStream,
                   RtcpRttStats* rtcp_rtt_stats);
   ~AudioSendStream() override;
 
+  void Reconfigure(const webrtc::AudioSendStream::Config& config) override;
+
   // webrtc::AudioSendStream implementation.
   void Start() override;
   void Stop() override;
@@ -75,14 +77,22 @@ 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 worker_thread_checker_;
   rtc::ThreadChecker pacer_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_;
 
   BitrateAllocator* const bitrate_allocator_;
   RtpTransportControllerSendInterface* const transport_;