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      1 /*
      2  *  Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
      3  *
      4  *  Use of this source code is governed by a BSD-style license
      5  *  that can be found in the LICENSE file in the root of the source
      6  *  tree. An additional intellectual property rights grant can be found
      7  *  in the file PATENTS.  All contributing project authors may
      8  *  be found in the AUTHORS file in the root of the source tree.
      9  */
     10 
     11 #ifndef WEBRTC_MODULES_AUDIO_CODING_MAIN_ACM2_ACM_AMR_H_
     12 #define WEBRTC_MODULES_AUDIO_CODING_MAIN_ACM2_ACM_AMR_H_
     13 
     14 #include "webrtc/modules/audio_coding/main/acm2/acm_generic_codec.h"
     15 
     16 // forward declaration
     17 struct AMR_encinst_t_;
     18 struct AMR_decinst_t_;
     19 
     20 namespace webrtc {
     21 
     22 enum ACMAMRPackingFormat;
     23 
     24 namespace acm2 {
     25 
     26 class ACMAMR : public ACMGenericCodec {
     27  public:
     28   explicit ACMAMR(int16_t codec_id);
     29   ~ACMAMR();
     30 
     31   // for FEC
     32   ACMGenericCodec* CreateInstance(void);
     33 
     34   int16_t InternalEncode(uint8_t* bitstream, int16_t* bitstream_len_byte);
     35 
     36   int16_t InternalInitEncoder(WebRtcACMCodecParams* codec_params);
     37 
     38   int16_t SetAMREncoderPackingFormat(const ACMAMRPackingFormat packing_format);
     39 
     40   ACMAMRPackingFormat AMREncoderPackingFormat() const;
     41 
     42   int16_t SetAMRDecoderPackingFormat(const ACMAMRPackingFormat packing_format);
     43 
     44   ACMAMRPackingFormat AMRDecoderPackingFormat() const;
     45 
     46  protected:
     47   void DestructEncoderSafe();
     48 
     49   int16_t InternalCreateEncoder();
     50 
     51   int16_t SetBitRateSafe(const int32_t rate);
     52 
     53   int16_t EnableDTX();
     54 
     55   int16_t DisableDTX();
     56 
     57   AMR_encinst_t_* encoder_inst_ptr_;
     58   int16_t encoding_mode_;
     59   int16_t encoding_rate_;
     60   ACMAMRPackingFormat encoder_packing_format_;
     61 };
     62 
     63 }  // namespace acm2
     64 
     65 }  // namespace webrtc
     66 
     67 #endif  // WEBRTC_MODULES_AUDIO_CODING_MAIN_ACM2_ACM_AMR_H_
     68