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_POST_DECODE_VAD_H_ 12 #define WEBRTC_MODULES_AUDIO_CODING_NETEQ_POST_DECODE_VAD_H_ 13 14 #include <string> // size_t 15 16 #include "webrtc/base/constructormagic.h" 17 #include "webrtc/common_audio/vad/include/webrtc_vad.h" 18 #include "webrtc/common_types.h" // NULL 19 #include "webrtc/modules/audio_coding/codecs/audio_decoder.h" 20 #include "webrtc/modules/audio_coding/neteq/defines.h" 21 #include "webrtc/modules/audio_coding/neteq/packet.h" 22 #include "webrtc/typedefs.h" 23 24 namespace webrtc { 25 26 class PostDecodeVad { 27 public: PostDecodeVad()28 PostDecodeVad() 29 : enabled_(false), 30 running_(false), 31 active_speech_(true), 32 sid_interval_counter_(0), 33 vad_instance_(NULL) { 34 } 35 36 virtual ~PostDecodeVad(); 37 38 // Enables post-decode VAD. 39 void Enable(); 40 41 // Disables post-decode VAD. 42 void Disable(); 43 44 // Initializes post-decode VAD. 45 void Init(); 46 47 // Updates post-decode VAD with the audio data in |signal| having |length| 48 // samples. The data is of type |speech_type|, at the sample rate |fs_hz|. 49 void Update(int16_t* signal, size_t length, 50 AudioDecoder::SpeechType speech_type, bool sid_frame, int fs_hz); 51 52 // Accessors. enabled()53 bool enabled() const { return enabled_; } running()54 bool running() const { return running_; } active_speech()55 bool active_speech() const { return active_speech_; } 56 57 private: 58 static const int kVadMode = 0; // Sets aggressiveness to "Normal". 59 // Number of Update() calls without CNG/SID before re-enabling VAD. 60 static const int kVadAutoEnable = 3000; 61 62 bool enabled_; 63 bool running_; 64 bool active_speech_; 65 int sid_interval_counter_; 66 ::VadInst* vad_instance_; 67 68 RTC_DISALLOW_COPY_AND_ASSIGN(PostDecodeVad); 69 }; 70 71 } // namespace webrtc 72 #endif // WEBRTC_MODULES_AUDIO_CODING_NETEQ_POST_DECODE_VAD_H_ 73