49 lines
1.5 KiB
C
49 lines
1.5 KiB
C
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/*
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* Copyright (c) 2014 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#ifndef WEBRTC_VOICE_ENGINE_NETWORK_PREDICTOR_H_
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#define WEBRTC_VOICE_ENGINE_NETWORK_PREDICTOR_H_
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#include <memory>
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#include "webrtc/base/exp_filter.h"
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#include "webrtc/system_wrappers/include/clock.h"
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namespace webrtc {
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namespace voe {
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// NetworkPredictor is to predict network conditions e.g., packet loss rate, for
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// sender and/or receiver to cope with changes in the network condition.
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class NetworkPredictor {
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public:
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explicit NetworkPredictor(Clock* clock);
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~NetworkPredictor() {}
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// Gets the predicted packet loss rate.
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uint8_t GetLossRate();
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// Updates the packet loss rate predictor, on receiving a new observation of
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// packet loss rate from past. Input packet loss rate should be in the
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// interval [0, 255].
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void UpdatePacketLossRate(uint8_t loss_rate);
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private:
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Clock* clock_;
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int64_t last_loss_rate_update_time_ms_;
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// An exponential filter is used to predict packet loss rate.
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std::unique_ptr<rtc::ExpFilter> loss_rate_filter_;
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};
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} // namespace voe
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} // namespace webrtc
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#endif // WEBRTC_VOICE_ENGINE_NETWORK_PREDICTOR_H_
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