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JitterEstimator: remove unnecessary helper functions

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Move functionality to closer where the values are used instead,
as per previous CL comment.

Bug: webrtc:14151
Change-Id: I6b7ca02da197420a1f5da930ba87021e6f557444
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/275204
Commit-Queue: Rasmus Brandt <brandtr@webrtc.org>
Reviewed-by: Philip Eliasson <philipel@webrtc.org>
Cr-Commit-Position: refs/heads/main@{#38148}
This commit is contained in:
Rasmus Brandt
2022-09-21 09:39:44 +02:00
committed by WebRTC LUCI CQ
parent d795c8bd16
commit 2f650fa822
2 changed files with 9 additions and 21 deletions
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25
modules/video_coding/timing/jitter_estimator.cc
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@ -243,7 +243,8 @@ void JitterEstimator::UpdateEstimate(TimeDelta frame_delay,
// https://en.wikipedia.org/wiki/68-95-99.7_rule. Note that neither of the
// estimated means are true sample means, which implies that they are possibly
// not normally distributed. Hence, this rejection method is just a heuristic.
double num_stddev_delay_outlier = GetNumStddevDelayOutlier();
double num_stddev_delay_outlier =
config_.num_stddev_delay_outlier.value_or(kNumStdDevDelayOutlier);
// Delay outlier rejection is two-sided.
bool abs_delay_is_not_outlier =
fabs(delay_deviation_ms) <
@ -253,10 +254,12 @@ void JitterEstimator::UpdateEstimate(TimeDelta frame_delay,
// median-filtered version, even if configured to use latter for the
// calculation in `CalculateEstimate()`.
// Size outlier rejection is one-sided.
double num_stddev_size_outlier =
config_.num_stddev_size_outlier.value_or(kNumStdDevSizeOutlier);
bool size_is_positive_outlier =
frame_size.bytes() >
avg_frame_size_bytes_ +
GetNumStddevSizeOutlier() * sqrt(var_frame_size_bytes2_);
num_stddev_size_outlier * sqrt(var_frame_size_bytes2_);
// Only update the Kalman filter if the sample is not considered an extreme
// outlier. Even if it is an extreme outlier from a delay point of view, if
@ -269,13 +272,16 @@ void JitterEstimator::UpdateEstimate(TimeDelta frame_delay,
// delayed. The next frame is of normal size (delta frame), and thus deltaFS
// will be << 0. This removes all frame samples which arrives after a key
// frame.
double congestion_rejection_factor =
config_.congestion_rejection_factor.value_or(
kCongestionRejectionFactor);
double filtered_max_frame_size_bytes =
config_.MaxFrameSizePercentileEnabled()
? max_frame_size_bytes_percentile_.GetFilteredValue()
: max_frame_size_bytes_;
bool is_not_congested =
delta_frame_bytes >
GetCongestionRejectionFactor() * filtered_max_frame_size_bytes;
congestion_rejection_factor * filtered_max_frame_size_bytes;
if (is_not_congested || config_.estimate_noise_when_congested) {
// Update the variance of the deviation from the line given by the Kalman
@ -320,19 +326,6 @@ JitterEstimator::Config JitterEstimator::GetConfigForTest() const {
return config_;
}
double JitterEstimator::GetNumStddevDelayOutlier() const {
return config_.num_stddev_delay_outlier.value_or(kNumStdDevDelayOutlier);
}
double JitterEstimator::GetNumStddevSizeOutlier() const {
return config_.num_stddev_size_outlier.value_or(kNumStdDevSizeOutlier);
}
double JitterEstimator::GetCongestionRejectionFactor() const {
return config_.congestion_rejection_factor.value_or(
kCongestionRejectionFactor);
}
// Estimates the random jitter by calculating the variance of the sample
// distance from the line given by the Kalman filter.
void JitterEstimator::EstimateRandomJitter(double d_dT) {

5
modules/video_coding/timing/jitter_estimator.h
View File

@ -143,11 +143,6 @@ class JitterEstimator {
Config GetConfigForTest() const;
private:
// These functions return values that could be overriden through the config.
double GetNumStddevDelayOutlier() const;
double GetNumStddevSizeOutlier() const;
double GetCongestionRejectionFactor() const;
// Updates the random jitter estimate, i.e. the variance of the time
// deviations from the line given by the Kalman filter.
//