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aa4f100225
Bug: webrtc:9718 Change-Id: I7b6e1d3c051e67b97f6de1ec95e84631af9c5b0d Reviewed-on: https://webrtc-review.googlesource.com/c/113600 Commit-Queue: Sebastian Jansson <srte@webrtc.org> Reviewed-by: Niels Moller <nisse@webrtc.org> Cr-Commit-Position: refs/heads/master@{#25953}
60 lines
1.9 KiB
C++
60 lines
1.9 KiB
C++
/*
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* Copyright (c) 2016 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 MODULES_CONGESTION_CONTROLLER_GOOG_CC_PROBE_BITRATE_ESTIMATOR_H_
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#define MODULES_CONGESTION_CONTROLLER_GOOG_CC_PROBE_BITRATE_ESTIMATOR_H_
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#include <limits>
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#include <map>
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#include "absl/types/optional.h"
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#include "api/units/data_rate.h"
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#include "modules/rtp_rtcp/include/rtp_rtcp_defines.h"
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namespace webrtc {
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class RtcEventLog;
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class ProbeBitrateEstimator {
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public:
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explicit ProbeBitrateEstimator(RtcEventLog* event_log);
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~ProbeBitrateEstimator();
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// Should be called for every probe packet we receive feedback about.
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// Returns the estimated bitrate if the probe completes a valid cluster.
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int HandleProbeAndEstimateBitrate(const PacketFeedback& packet_feedback);
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absl::optional<DataRate> FetchAndResetLastEstimatedBitrate();
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absl::optional<DataRate> last_estimate() const;
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private:
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struct AggregatedCluster {
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int num_probes = 0;
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int64_t first_send_ms = std::numeric_limits<int64_t>::max();
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int64_t last_send_ms = 0;
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int64_t first_receive_ms = std::numeric_limits<int64_t>::max();
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int64_t last_receive_ms = 0;
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int size_last_send = 0;
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int size_first_receive = 0;
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int size_total = 0;
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};
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// Erases old cluster data that was seen before |timestamp_ms|.
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void EraseOldClusters(int64_t timestamp_ms);
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std::map<int, AggregatedCluster> clusters_;
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RtcEventLog* const event_log_;
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absl::optional<int> estimated_bitrate_bps_;
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absl::optional<DataRate> last_estimate_;
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};
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} // namespace webrtc
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#endif // MODULES_CONGESTION_CONTROLLER_GOOG_CC_PROBE_BITRATE_ESTIMATOR_H_
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