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 MODULES_AUDIO_CODING_NETEQ_POST_DECODE_VAD_H_ 12 #define MODULES_AUDIO_CODING_NETEQ_POST_DECODE_VAD_H_ 13 14 #include <stddef.h> 15 #include <stdint.h> 16 17 #include "api/audio_codecs/audio_decoder.h" 18 #include "common_audio/vad/include/webrtc_vad.h" 19 #include "rtc_base/constructor_magic.h" 20 21 namespace webrtc { 22 23 class PostDecodeVad { 24 public: PostDecodeVad()25 PostDecodeVad() 26 : enabled_(false), 27 running_(false), 28 active_speech_(true), 29 sid_interval_counter_(0), 30 vad_instance_(NULL) {} 31 32 virtual ~PostDecodeVad(); 33 34 // Enables post-decode VAD. 35 void Enable(); 36 37 // Disables post-decode VAD. 38 void Disable(); 39 40 // Initializes post-decode VAD. 41 void Init(); 42 43 // Updates post-decode VAD with the audio data in |signal| having |length| 44 // samples. The data is of type |speech_type|, at the sample rate |fs_hz|. 45 void Update(int16_t* signal, 46 size_t length, 47 AudioDecoder::SpeechType speech_type, 48 bool sid_frame, 49 int fs_hz); 50 51 // Accessors. enabled()52 bool enabled() const { return enabled_; } running()53 bool running() const { return running_; } active_speech()54 bool active_speech() const { return active_speech_; } 55 56 private: 57 static const int kVadMode = 0; // Sets aggressiveness to "Normal". 58 // Number of Update() calls without CNG/SID before re-enabling VAD. 59 static const int kVadAutoEnable = 3000; 60 61 bool enabled_; 62 bool running_; 63 bool active_speech_; 64 int sid_interval_counter_; 65 ::VadInst* vad_instance_; 66 67 RTC_DISALLOW_COPY_AND_ASSIGN(PostDecodeVad); 68 }; 69 70 } // namespace webrtc 71 #endif // MODULES_AUDIO_CODING_NETEQ_POST_DECODE_VAD_H_ 72