49 lines
1.5 KiB
C++
49 lines
1.5 KiB
C++
/*
|
|
* 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.
|
|
*/
|
|
|
|
#ifndef WEBRTC_VOICE_ENGINE_NETWORK_PREDICTOR_H_
|
|
#define WEBRTC_VOICE_ENGINE_NETWORK_PREDICTOR_H_
|
|
|
|
#include <memory>
|
|
|
|
#include "webrtc/base/exp_filter.h"
|
|
#include "webrtc/system_wrappers/include/clock.h"
|
|
|
|
namespace webrtc {
|
|
|
|
namespace voe {
|
|
|
|
// NetworkPredictor is to predict network conditions e.g., packet loss rate, for
|
|
// sender and/or receiver to cope with changes in the network condition.
|
|
class NetworkPredictor {
|
|
public:
|
|
explicit NetworkPredictor(Clock* clock);
|
|
~NetworkPredictor() {}
|
|
|
|
// Gets the predicted packet loss rate.
|
|
uint8_t GetLossRate();
|
|
|
|
// Updates the packet loss rate predictor, on receiving a new observation of
|
|
// packet loss rate from past. Input packet loss rate should be in the
|
|
// interval [0, 255].
|
|
void UpdatePacketLossRate(uint8_t loss_rate);
|
|
|
|
private:
|
|
Clock* clock_;
|
|
int64_t last_loss_rate_update_time_ms_;
|
|
|
|
// An exponential filter is used to predict packet loss rate.
|
|
std::unique_ptr<rtc::ExpFilter> loss_rate_filter_;
|
|
};
|
|
|
|
} // namespace voe
|
|
} // namespace webrtc
|
|
#endif // WEBRTC_VOICE_ENGINE_NETWORK_PREDICTOR_H_
|