57 lines
1.7 KiB
C
57 lines
1.7 KiB
C
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/*
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* Copyright (c) 2019 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 API_NETWORK_STATE_PREDICTOR_H_
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#define API_NETWORK_STATE_PREDICTOR_H_
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#include <memory>
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#include <vector>
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namespace webrtc {
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enum class BandwidthUsage {
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kBwNormal = 0,
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kBwUnderusing = 1,
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kBwOverusing = 2,
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kLast
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};
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// TODO(yinwa): work in progress. API in class NetworkStatePredictor should not
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// be used by other users until this comment is removed.
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// NetworkStatePredictor predict network state based on current network metrics.
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// Usage:
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// Setup by calling Initialize.
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// For each update, call Update. Update returns network state
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// prediction.
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class NetworkStatePredictor {
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public:
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virtual ~NetworkStatePredictor() {}
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// Returns current network state prediction.
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// Inputs: send_time_ms - packet send time.
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// arrival_time_ms - packet arrival time.
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// network_state - computed network state.
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virtual BandwidthUsage Update(int64_t send_time_ms,
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int64_t arrival_time_ms,
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BandwidthUsage network_state) = 0;
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};
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class NetworkStatePredictorFactoryInterface {
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public:
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virtual std::unique_ptr<NetworkStatePredictor>
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CreateNetworkStatePredictor() = 0;
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virtual ~NetworkStatePredictorFactoryInterface() = default;
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};
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} // namespace webrtc
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#endif // API_NETWORK_STATE_PREDICTOR_H_
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