iSAC: Make separate AudioEncoder and AudioDecoder objects

webrtc/modules/audio_coding/codecs/isac/main/interface/audio_encoder_isac.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.
  */
 
@@ skipping 100 matching lines @@
   }
   static inline int16_t SetMaxPayloadSize(instance_type* inst,
                                           int16_t max_payload_size_bytes) {
     return WebRtcIsac_SetMaxPayloadSize(inst, max_payload_size_bytes);
   }
   static inline int16_t SetMaxRate(instance_type* inst, int32_t max_bit_rate) {
     return WebRtcIsac_SetMaxRate(inst, max_bit_rate);
   }
 };
 
-typedef AudioEncoderDecoderIsacT<IsacFloat> AudioEncoderDecoderIsac;
+using AudioEncoderIsac = AudioEncoderIsacT<IsacFloat>;
+using AudioDecoderIsac = AudioDecoderIsacT<IsacFloat>;
 
 struct CodecInst;
 
-class AudioEncoderDecoderMutableIsacFloat
-    : public AudioEncoderMutableImpl<AudioEncoderDecoderIsac,
-                                     AudioEncoderDecoderMutableIsac> {
+class AudioEncoderMutableIsacFloat
+    : public AudioEncoderMutableImpl<AudioEncoderIsac> {
  public:
-  explicit AudioEncoderDecoderMutableIsacFloat(const CodecInst& codec_inst);
-  void UpdateSettings(const CodecInst& codec_inst) override;
+  AudioEncoderMutableIsacFloat(const CodecInst& codec_inst,
+                               LockedIsacBandwidthInfo* bwinfo);
   void SetMaxPayloadSize(int max_payload_size_bytes) override;
   void SetMaxRate(int max_rate_bps) override;
-
-  // From AudioDecoder.
-  int Decode(const uint8_t* encoded,
-             size_t encoded_len,
-             int sample_rate_hz,
-             size_t max_decoded_bytes,
-             int16_t* decoded,
-             SpeechType* speech_type) override;
-  int DecodeRedundant(const uint8_t* encoded,
-                      size_t encoded_len,
-                      int sample_rate_hz,
-                      size_t max_decoded_bytes,
-                      int16_t* decoded,
-                      SpeechType* speech_type) override;
-  bool HasDecodePlc() const override;
-  int DecodePlc(int num_frames, int16_t* decoded) override;
-  int Init() override;
-  int IncomingPacket(const uint8_t* payload,
-                     size_t payload_len,
-                     uint16_t rtp_sequence_number,
-                     uint32_t rtp_timestamp,
-                     uint32_t arrival_timestamp) override;
-  int ErrorCode() override;
-  int PacketDuration(const uint8_t* encoded, size_t encoded_len) const override;
-  int PacketDurationRedundant(const uint8_t* encoded,
-                              size_t encoded_len) const override;
-  bool PacketHasFec(const uint8_t* encoded, size_t encoded_len) const override;
-  size_t Channels() const override;
 };
 
 }  // namespace webrtc
 #endif  // WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_INTERFACE_AUDIO_ENCODER_ISAC_H_