1 /* 2 * Copyright (c) 2013 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_NETEQ_DECISION_LOGIC_FAX_H_ 12 #define WEBRTC_MODULES_AUDIO_CODING_NETEQ_DECISION_LOGIC_FAX_H_ 13 14 #include "webrtc/base/constructormagic.h" 15 #include "webrtc/modules/audio_coding/neteq/decision_logic.h" 16 #include "webrtc/typedefs.h" 17 18 namespace webrtc { 19 20 // Implementation of the DecisionLogic class for playout modes kPlayoutFax and 21 // kPlayoutOff. 22 class DecisionLogicFax : public DecisionLogic { 23 public: 24 // Constructor. DecisionLogicFax(int fs_hz,size_t output_size_samples,NetEqPlayoutMode playout_mode,DecoderDatabase * decoder_database,const PacketBuffer & packet_buffer,DelayManager * delay_manager,BufferLevelFilter * buffer_level_filter)25 DecisionLogicFax(int fs_hz, 26 size_t output_size_samples, 27 NetEqPlayoutMode playout_mode, 28 DecoderDatabase* decoder_database, 29 const PacketBuffer& packet_buffer, 30 DelayManager* delay_manager, 31 BufferLevelFilter* buffer_level_filter) 32 : DecisionLogic(fs_hz, output_size_samples, playout_mode, 33 decoder_database, packet_buffer, delay_manager, 34 buffer_level_filter) { 35 } 36 37 protected: 38 // Returns the operation that should be done next. |sync_buffer| and |expand| 39 // are provided for reference. |decoder_frame_length| is the number of samples 40 // obtained from the last decoded frame. If there is a packet available, the 41 // packet header should be supplied in |packet_header|; otherwise it should 42 // be NULL. The mode resulting form the last call to NetEqImpl::GetAudio is 43 // supplied in |prev_mode|. If there is a DTMF event to play, |play_dtmf| 44 // should be set to true. The output variable |reset_decoder| will be set to 45 // true if a reset is required; otherwise it is left unchanged (i.e., it can 46 // remain true if it was true before the call). 47 Operations GetDecisionSpecialized(const SyncBuffer& sync_buffer, 48 const Expand& expand, 49 size_t decoder_frame_length, 50 const RTPHeader* packet_header, 51 Modes prev_mode, 52 bool play_dtmf, 53 bool* reset_decoder) override; 54 55 private: 56 RTC_DISALLOW_COPY_AND_ASSIGN(DecisionLogicFax); 57 }; 58 59 } // namespace webrtc 60 #endif // WEBRTC_MODULES_AUDIO_CODING_NETEQ_DECISION_LOGIC_FAX_H_ 61