0a7d4eed98
Bitrate controller is used in VoiceEngine to smoothen the fraction loss from RTCP report blocks. This CL removes the usage of the BitrateController and calculates its own fraction loss average insted. This introduces some duplicated code between BitrateController and Channel, but removes processing overhead and the incorrect bandwidth estimation numbers reported by the bitrate controller. BUG=4310 TEST=voe_cmd_test with network simulator R=minyue@webrtc.org Review URL: https://webrtc-codereview.appspot.com/39999004 Cr-Commit-Position: refs/heads/master@{#8386} git-svn-id: http://webrtc.googlecode.com/svn/trunk@8386 4adac7df-926f-26a2-2b94-8c16560cd09d
39 lines
1.2 KiB
C++
39 lines
1.2 KiB
C++
/*
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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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#include "webrtc/voice_engine/network_predictor.h"
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namespace webrtc {
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namespace voe {
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NetworkPredictor::NetworkPredictor(Clock* clock)
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: clock_(clock),
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last_loss_rate_update_time_ms_(clock_->TimeInMilliseconds()),
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loss_rate_filter_(new rtc::ExpFilter(0.9999f)) {
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}
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uint8_t NetworkPredictor::GetLossRate() {
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float value = loss_rate_filter_->filtered();
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return (value == rtc::ExpFilter::kValueUndefined) ? 0 :
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static_cast<uint8_t>(value + 0.5);
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}
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void NetworkPredictor::UpdatePacketLossRate(uint8_t loss_rate) {
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int64_t now_ms = clock_->TimeInMilliseconds();
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// Update the recursive average filter.
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loss_rate_filter_->Apply(
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static_cast<float>(now_ms - last_loss_rate_update_time_ms_),
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static_cast<float>(loss_rate));
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last_loss_rate_update_time_ms_ = now_ms;
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}
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} // namespace voe
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} // namespace webrtc
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