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/*
* Copyright (c) 2014 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.
*/
#include "common_audio/vad/include/vad.h"
#include <memory>
#include "common_audio/vad/include/webrtc_vad.h"
#include "rtc_base/checks.h"
namespace webrtc {
namespace {
class VadImpl final : public Vad {
public:
explicit VadImpl(Aggressiveness aggressiveness)
: handle_(nullptr), aggressiveness_(aggressiveness) {
Reset();
}
~VadImpl() override { WebRtcVad_Free(handle_); }
Activity VoiceActivity(const int16_t* audio,
size_t num_samples,
int sample_rate_hz) override {
int ret = WebRtcVad_Process(handle_, sample_rate_hz, audio, num_samples);
switch (ret) {
case 0:
return kPassive;
case 1:
return kActive;
default:
RTC_DCHECK_NOTREACHED() << "WebRtcVad_Process returned an error.";
return kError;
}
}
void Reset() override {
if (handle_)
WebRtcVad_Free(handle_);
handle_ = WebRtcVad_Create();
RTC_CHECK(handle_);
RTC_CHECK_EQ(WebRtcVad_Init(handle_), 0);
RTC_CHECK_EQ(WebRtcVad_set_mode(handle_, aggressiveness_), 0);
}
private:
VadInst* handle_;
Aggressiveness aggressiveness_;
};
} // namespace
std::unique_ptr<Vad> CreateVad(Vad::Aggressiveness aggressiveness) {
return std::unique_ptr<Vad>(new VadImpl(aggressiveness));
}
} // namespace webrtc