b08db28958
BUG=3153 R=andresp@webrtc.org Review URL: https://webrtc-codereview.appspot.com/11199004 git-svn-id: http://webrtc.googlecode.com/svn/trunk@5854 4adac7df-926f-26a2-2b94-8c16560cd09d
79 lines
2.8 KiB
C++
79 lines
2.8 KiB
C++
/*
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* Copyright (c) 2012 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_MODULES_RTP_RTCP_SOURCE_REMOTE_RATE_CONTROL_H_
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#define WEBRTC_MODULES_RTP_RTCP_SOURCE_REMOTE_RATE_CONTROL_H_
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#include "webrtc/modules/remote_bitrate_estimator/include/bwe_defines.h"
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namespace webrtc {
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class RemoteRateControl {
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public:
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explicit RemoteRateControl(uint32_t min_bitrate_bps);
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~RemoteRateControl() {}
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void Reset();
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// Returns true if there is a valid estimate of the incoming bitrate, false
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// otherwise.
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bool ValidEstimate() const;
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// Returns true if the bitrate estimate hasn't been changed for more than
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// an RTT, or if the incoming_bitrate is more than 5% above the current
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// estimate. Should be used to decide if we should reduce the rate further
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// when over-using.
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bool TimeToReduceFurther(int64_t time_now,
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unsigned int incoming_bitrate) const;
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int32_t SetConfiguredBitRates(uint32_t min_bit_rate, uint32_t max_bit_rate);
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uint32_t LatestEstimate() const;
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uint32_t UpdateBandwidthEstimate(int64_t now_ms);
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void SetRtt(unsigned int rtt);
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RateControlRegion Update(const RateControlInput* input, int64_t now_ms);
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private:
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uint32_t ChangeBitRate(uint32_t current_bit_rate,
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uint32_t incoming_bit_rate,
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double delay_factor,
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int64_t now_ms);
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double RateIncreaseFactor(int64_t now_ms,
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int64_t last_ms,
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uint32_t reaction_time_ms,
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double noise_var) const;
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void UpdateChangePeriod(int64_t now_ms);
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void UpdateMaxBitRateEstimate(float incoming_bit_rate_kbps);
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void ChangeState(const RateControlInput& input, int64_t now_ms);
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void ChangeState(RateControlState new_state);
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void ChangeRegion(RateControlRegion region);
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uint32_t min_configured_bit_rate_;
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uint32_t max_configured_bit_rate_;
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uint32_t current_bit_rate_;
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uint32_t max_hold_rate_;
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float avg_max_bit_rate_;
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float var_max_bit_rate_;
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RateControlState rate_control_state_;
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RateControlState came_from_state_;
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RateControlRegion rate_control_region_;
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int64_t last_bit_rate_change_;
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RateControlInput current_input_;
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bool updated_;
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int64_t time_first_incoming_estimate_;
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bool initialized_bit_rate_;
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float avg_change_period_;
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int64_t last_change_ms_;
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float beta_;
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unsigned int rtt_;
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};
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} // namespace webrtc
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#endif // WEBRTC_MODULES_RTP_RTCP_SOURCE_REMOTE_RATE_CONTROL_H_
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