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/*
* Copyright (c) 2013 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.
*/
#ifndef MODULES_AUDIO_CODING_NETEQ_POST_DECODE_VAD_H_
#define MODULES_AUDIO_CODING_NETEQ_POST_DECODE_VAD_H_
#include <stddef.h>
#include <stdint.h>
#include "api/audio_codecs/audio_decoder.h"
#include "common_audio/vad/include/webrtc_vad.h"
namespace webrtc {
class PostDecodeVad {
public:
PostDecodeVad()
: enabled_(false),
running_(false),
active_speech_(true),
sid_interval_counter_(0),
vad_instance_(NULL) {}
virtual ~PostDecodeVad();
PostDecodeVad(const PostDecodeVad&) = delete;
PostDecodeVad& operator=(const PostDecodeVad&) = delete;
// Enables post-decode VAD.
void Enable();
// Disables post-decode VAD.
void Disable();
// Initializes post-decode VAD.
void Init();
// Updates post-decode VAD with the audio data in `signal` having `length`
// samples. The data is of type `speech_type`, at the sample rate `fs_hz`.
void Update(int16_t* signal,
size_t length,
AudioDecoder::SpeechType speech_type,
bool sid_frame,
int fs_hz);
// Accessors.
bool enabled() const { return enabled_; }
bool running() const { return running_; }
bool active_speech() const { return active_speech_; }
private:
static const int kVadMode = 0; // Sets aggressiveness to "Normal".
// Number of Update() calls without CNG/SID before re-enabling VAD.
static const int kVadAutoEnable = 3000;
bool enabled_;
bool running_;
bool active_speech_;
int sid_interval_counter_;
::VadInst* vad_instance_;
};
} // namespace webrtc
#endif // MODULES_AUDIO_CODING_NETEQ_POST_DECODE_VAD_H_
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