Fold AudioEncoderMutable into AudioEncoder

webrtc/modules/audio_coding/codecs/cng/include/audio_encoder_cng.h

 /*
  *  Copyright (c) 2014 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.
  */
 
 #ifndef WEBRTC_MODULES_AUDIO_CODING_CODECS_CNG_INCLUDE_AUDIO_ENCODER_CNG_H_
 #define WEBRTC_MODULES_AUDIO_CODING_CODECS_CNG_INCLUDE_AUDIO_ENCODER_CNG_H_
 
 #include <vector>
 
 #include "webrtc/base/scoped_ptr.h"
 #include "webrtc/common_audio/vad/include/vad.h"
 #include "webrtc/modules/audio_coding/codecs/audio_encoder.h"
 #include "webrtc/modules/audio_coding/codecs/cng/include/webrtc_cng.h"
 
 namespace webrtc {
 
 class Vad;
 
 class AudioEncoderCng final : public AudioEncoder {
  public:
   struct Config {
-    Config();
     bool IsOk() const;
 
-    int num_channels;
-    int payload_type;
+    int num_channels = 1;
+    int payload_type = 13;
     // Caller keeps ownership of the AudioEncoder object.
-    AudioEncoder* speech_encoder;
-    Vad::Aggressiveness vad_mode;
-    int sid_frame_interval_ms;
-    int num_cng_coefficients;
+    AudioEncoder* speech_encoder = nullptr;
+    Vad::Aggressiveness vad_mode = Vad::kVadNormal;
+    int sid_frame_interval_ms = 100;
+    int num_cng_coefficients = 8;
     // The Vad pointer is mainly for testing. If a NULL pointer is passed, the
     // AudioEncoderCng creates (and destroys) a Vad object internally. If an
     // object is passed, the AudioEncoderCng assumes ownership of the Vad
     // object.
-    Vad* vad;
+    Vad* vad = nullptr;
   };
 
   explicit AudioEncoderCng(const Config& config);
-
   ~AudioEncoderCng() override;
 
+  size_t MaxEncodedBytes() const override;
   int SampleRateHz() const override;
   int NumChannels() const override;
-  size_t MaxEncodedBytes() const override;
   int RtpTimestampRateHz() const override;
   size_t Num10MsFramesInNextPacket() const override;
   size_t Max10MsFramesInAPacket() const override;
   int GetTargetBitrate() const override;
-  void SetTargetBitrate(int bits_per_second) override;
-  void SetProjectedPacketLossRate(double fraction) override;
   EncodedInfo EncodeInternal(uint32_t rtp_timestamp,
                              const int16_t* audio,
                              size_t max_encoded_bytes,
                              uint8_t* encoded) override;
+  void Reset() override;
+  bool SetFec(bool enable) override;
+  bool SetDtx(bool enable) override;
+  bool SetApplication(Application application) override;
+  bool SetMaxPlaybackRate(int frequency_hz) override;
+  void SetProjectedPacketLossRate(double fraction) override;
+  void SetTargetBitrate(int target_bps) override;
+  void SetMaxBitrate(int max_bps) override;
+  void SetMaxPayloadSize(int max_payload_size_bytes) override;
 
  private:
   // Deleter for use with scoped_ptr. E.g., use as
   //   rtc::scoped_ptr<CNG_enc_inst, CngInstDeleter> cng_inst_;
   struct CngInstDeleter {
     inline void operator()(CNG_enc_inst* ptr) const { WebRtcCng_FreeEnc(ptr); }
   };
 
   EncodedInfo EncodePassive(size_t frames_to_encode,
                             size_t max_encoded_bytes,
                             uint8_t* encoded);
   EncodedInfo EncodeActive(size_t frames_to_encode,
                            size_t max_encoded_bytes,
                            uint8_t* encoded);
   size_t SamplesPer10msFrame() const;
 
   AudioEncoder* speech_encoder_;
   const int cng_payload_type_;
   const int num_cng_coefficients_;
   std::vector<int16_t> speech_buffer_;
   std::vector<uint32_t> rtp_timestamps_;
   bool last_frame_active_;
   rtc::scoped_ptr<Vad> vad_;
   rtc::scoped_ptr<CNG_enc_inst, CngInstDeleter> cng_inst_;
 };
 
 }  // namespace webrtc
 #endif  // WEBRTC_MODULES_AUDIO_CODING_CODECS_CNG_INCLUDE_AUDIO_ENCODER_CNG_H_