mirror of
https://github.com/mollyim/webrtc.git
synced 2025-05-13 22:00:47 +01:00
bc43fe3a50
Removed old disabled tests enable test on android Bug: webrtc:4711 Change-Id: Ic9adbdadc9e847bdf31b8be4ce116a3695499944 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/284922 Reviewed-by: Björn Terelius <terelius@webrtc.org> Commit-Queue: Per Kjellander <perkj@webrtc.org> Cr-Commit-Position: refs/heads/main@{#38736}
111 lines
3.5 KiB
C++
111 lines
3.5 KiB
C++
/*
|
|
* Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
|
|
*
|
|
* Use of this source code is governed by a BSD-style license
|
|
* that can be found in the LICENSE file in the root of the source
|
|
* tree. An additional intellectual property rights grant can be found
|
|
* in the file PATENTS. All contributing project authors may
|
|
* be found in the AUTHORS file in the root of the source tree.
|
|
*/
|
|
|
|
#include "modules/remote_bitrate_estimator/overuse_detector.h"
|
|
|
|
#include <math.h>
|
|
#include <stdio.h>
|
|
|
|
#include <algorithm>
|
|
#include <string>
|
|
|
|
#include "modules/remote_bitrate_estimator/test/bwe_test_logging.h"
|
|
#include "rtc_base/checks.h"
|
|
#include "rtc_base/numerics/safe_minmax.h"
|
|
|
|
namespace webrtc {
|
|
|
|
const double kMaxAdaptOffsetMs = 15.0;
|
|
const double kOverUsingTimeThreshold = 10;
|
|
const int kMaxNumDeltas = 60;
|
|
|
|
OveruseDetector::OveruseDetector(const FieldTrialsView* key_value_config)
|
|
// Experiment is on by default, but can be disabled with finch by setting
|
|
// the field trial string to "WebRTC-AdaptiveBweThreshold/Disabled/".
|
|
: k_up_(0.0087),
|
|
k_down_(0.039),
|
|
overusing_time_threshold_(kOverUsingTimeThreshold),
|
|
threshold_(12.5),
|
|
last_update_ms_(-1),
|
|
prev_offset_(0.0),
|
|
time_over_using_(-1),
|
|
overuse_counter_(0),
|
|
hypothesis_(BandwidthUsage::kBwNormal) {}
|
|
|
|
OveruseDetector::~OveruseDetector() {}
|
|
|
|
BandwidthUsage OveruseDetector::State() const {
|
|
return hypothesis_;
|
|
}
|
|
|
|
BandwidthUsage OveruseDetector::Detect(double offset,
|
|
double ts_delta,
|
|
int num_of_deltas,
|
|
int64_t now_ms) {
|
|
if (num_of_deltas < 2) {
|
|
return BandwidthUsage::kBwNormal;
|
|
}
|
|
const double T = std::min(num_of_deltas, kMaxNumDeltas) * offset;
|
|
BWE_TEST_LOGGING_PLOT(1, "T", now_ms, T);
|
|
BWE_TEST_LOGGING_PLOT(1, "threshold", now_ms, threshold_);
|
|
if (T > threshold_) {
|
|
if (time_over_using_ == -1) {
|
|
// Initialize the timer. Assume that we've been
|
|
// over-using half of the time since the previous
|
|
// sample.
|
|
time_over_using_ = ts_delta / 2;
|
|
} else {
|
|
// Increment timer
|
|
time_over_using_ += ts_delta;
|
|
}
|
|
overuse_counter_++;
|
|
if (time_over_using_ > overusing_time_threshold_ && overuse_counter_ > 1) {
|
|
if (offset >= prev_offset_) {
|
|
time_over_using_ = 0;
|
|
overuse_counter_ = 0;
|
|
hypothesis_ = BandwidthUsage::kBwOverusing;
|
|
}
|
|
}
|
|
} else if (T < -threshold_) {
|
|
time_over_using_ = -1;
|
|
overuse_counter_ = 0;
|
|
hypothesis_ = BandwidthUsage::kBwUnderusing;
|
|
} else {
|
|
time_over_using_ = -1;
|
|
overuse_counter_ = 0;
|
|
hypothesis_ = BandwidthUsage::kBwNormal;
|
|
}
|
|
prev_offset_ = offset;
|
|
|
|
UpdateThreshold(T, now_ms);
|
|
|
|
return hypothesis_;
|
|
}
|
|
|
|
void OveruseDetector::UpdateThreshold(double modified_offset, int64_t now_ms) {
|
|
if (last_update_ms_ == -1)
|
|
last_update_ms_ = now_ms;
|
|
|
|
if (fabs(modified_offset) > threshold_ + kMaxAdaptOffsetMs) {
|
|
// Avoid adapting the threshold to big latency spikes, caused e.g.,
|
|
// by a sudden capacity drop.
|
|
last_update_ms_ = now_ms;
|
|
return;
|
|
}
|
|
|
|
const double k = fabs(modified_offset) < threshold_ ? k_down_ : k_up_;
|
|
const int64_t kMaxTimeDeltaMs = 100;
|
|
int64_t time_delta_ms = std::min(now_ms - last_update_ms_, kMaxTimeDeltaMs);
|
|
threshold_ += k * (fabs(modified_offset) - threshold_) * time_delta_ms;
|
|
threshold_ = rtc::SafeClamp(threshold_, 6.f, 600.f);
|
|
last_update_ms_ = now_ms;
|
|
}
|
|
|
|
} // namespace webrtc
|