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field_trials.py
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#!/usr/bin/env vpython3
# Copyright (c) 2022 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.
import datetime
from datetime import date
import hashlib
import sys
from typing import FrozenSet, List, Set
import argparse
import dataclasses
@dataclasses.dataclass(frozen=True)
class FieldTrial:
"""Representation of all attributes associated with a field trial.
Attributes:
key: Field trial key.
bug: Associated open bug containing more context.
end_date: Date when the field trial expires and must be deleted.
"""
key: str
bug: str
end_date: date
def bug_url(self) -> str:
project, _, bug_id = self.bug.partition(':')
if not project or not bug_id:
return ''
return f'https://crbug.com/{project}/{bug_id}'
# As per the policy in `g3doc/field-trials.md`, all field trials should be
# registered in the container below.
ACTIVE_FIELD_TRIALS: FrozenSet[FieldTrial] = frozenset([
# keep-sorted start
FieldTrial('WebRTC-Audio-GainController2',
'webrtc:7494',
date(2024, 4, 1)),
FieldTrial('WebRTC-Audio-OpusGeneratePlc',
'webrtc:13322',
date(2025, 4, 1)),
FieldTrial('WebRTC-Audio-PriorityBitrate',
'webrtc:15769',
date(2024, 4, 1)),
FieldTrial('WebRTC-AV1-OverridePriorityBitrate',
'webrtc:15763',
date(2024, 4, 1)),
FieldTrial('WebRTC-Av1-GetEncoderInfoOverride',
'webrtc:14931',
date(2024, 4, 1)),
FieldTrial('WebRTC-DataChannelMessageInterleaving',
'webrtc:5696',
date(2024, 10, 1)),
FieldTrial('WebRTC-DisableRtxRateLimiter',
'webrtc:15184',
date(2024, 4, 1)),
FieldTrial('WebRTC-EncoderDataDumpDirectory',
'b/296242528',
date(2024, 4, 1)),
FieldTrial('WebRTC-FrameCadenceAdapter-UseVideoFrameTimestamp',
'webrtc:15887',
date(2024, 10, 1)),
FieldTrial('WebRTC-IPv6NetworkResolutionFixes',
'webrtc:14334',
date(2024, 4, 1)),
FieldTrial('WebRTC-IncomingTimestampOnMarkerBitOnly',
'webrtc:14526',
date(2024, 4, 1)),
FieldTrial('WebRTC-IncreaseIceCandidatePriorityHostSrflx',
'webrtc:15020',
date(2024, 4, 1)),
FieldTrial('WebRTC-JitterEstimatorConfig',
'webrtc:14151',
date(2024, 4, 1)),
FieldTrial('WebRTC-LibaomAv1Encoder-DisableFrameDropping',
'webrtc:15225',
date(2024, 4, 1)),
FieldTrial('WebRTC-LibaomAv1Encoder-MaxConsecFrameDrop',
'webrtc:15821',
date(2024, 4, 1)),
FieldTrial('WebRTC-LibvpxVp9Encoder-SvcFrameDropConfig',
'webrtc:15827',
date(2024, 9, 1)),
FieldTrial('WebRTC-LibvpxVp8Encoder-AndroidSpecificThreadingSettings',
'webrtc:15828',
date(2024, 9, 1)),
FieldTrial('WebRTC-Pacer-FastRetransmissions',
'chromium:1354491',
date(2024, 4, 1)),
FieldTrial('WebRTC-Pacer-KeyframeFlushing',
'webrtc:11340',
date(2024, 4, 1)),
FieldTrial('WebRTC-PaddingMode-RecentLargePacket',
'webrtc:15201',
date(2024, 4, 1)),
FieldTrial('WebRTC-PermuteTlsClientHello',
'webrtc:15467',
date(2024, 7, 1)),
FieldTrial('WebRTC-PreventSsrcGroupsWithUnexpectedSize',
'chromium:1459124',
date(2024, 4, 1)),
FieldTrial('WebRTC-ReceiveBufferSize',
'webrtc:15585',
date(2024, 4, 1)),
FieldTrial('WebRTC-RtcEventLogEncodeDependencyDescriptor',
'webrtc:14975',
date(2024, 4, 1)),
FieldTrial('WebRTC-RtcEventLogEncodeNetEqSetMinimumDelayKillSwitch',
'webrtc:14763',
date(2024, 4, 1)),
FieldTrial('WebRTC-SCM-Timestamp',
'webrtc:5773',
date(2024, 4, 1)),
FieldTrial('WebRTC-SendPacketsOnWorkerThread',
'webrtc:14502',
date(2024, 4, 1)),
FieldTrial('WebRTC-SetCodecPreferences-ReceiveOnlyFilterInsteadOfThrow',
'webrtc:15396',
date(2024, 12, 1)),
FieldTrial('WebRTC-SrtpRemoveReceiveStream',
'webrtc:15604',
date(2024, 10, 1)),
FieldTrial('WebRTC-TaskQueue-ReplaceLibeventWithStdlib',
'webrtc:14389',
date(2024, 4, 1)),
FieldTrial('WebRTC-VP8-MaxFrameInterval',
'webrtc:15530',
date(2024, 4, 1)),
FieldTrial('WebRTC-Video-EnableRetransmitAllLayers',
'webrtc:14959',
date(2024, 4, 1)),
FieldTrial('WebRTC-Video-EncoderFallbackSettings',
'webrtc:6634',
date(2024, 4, 1)),
FieldTrial('WebRTC-Video-SimulcastIndependentFrameIds',
'webrtc:15875',
date(2024, 12, 1)),
FieldTrial('WebRTC-VideoEncoderSettings',
'chromium:1406331',
date(2024, 4, 1)),
FieldTrial('WebRTC-ZeroHertzQueueOverload',
'webrtc:332381',
date(2024, 7, 1)),
FieldTrial('WebRTC-Video-H26xPacketBuffer',
'webrtc:13485',
date(2024, 6, 1)),
# keep-sorted end
]) # yapf: disable
INDEFINITE = date(datetime.MAXYEAR, 1, 1)
# These field trials precedes the policy in `g3doc/field-trials.md` and are
# therefore not required to follow it. Do not add any new field trials here.
# If you remove an entry you should also update
# POLICY_EXEMPT_FIELD_TRIALS_DIGEST.
POLICY_EXEMPT_FIELD_TRIALS: FrozenSet[FieldTrial] = frozenset([
# keep-sorted start
FieldTrial('WebRTC-AddNetworkCostToVpn',
'webrtc:13097',
date(2024, 4, 1)),
FieldTrial('WebRTC-AddPacingToCongestionWindowPushback',
'webrtc:10171',
date(2024, 4, 1)),
FieldTrial('WebRTC-AdjustOpusBandwidth',
'webrtc:8522',
date(2024, 4, 1)),
FieldTrial('WebRTC-Aec3AecStateFullResetKillSwitch',
'webrtc:11475',
INDEFINITE),
FieldTrial('WebRTC-Aec3AecStateSubtractorAnalyzerResetKillSwitch',
'webrtc:11475',
INDEFINITE),
FieldTrial('WebRTC-Aec3AntiHowlingMinimizationKillSwitch',
'b/150764764',
INDEFINITE),
FieldTrial('WebRTC-Aec3ClampInstQualityToOneKillSwitch',
'webrtc:10913',
INDEFINITE),
FieldTrial('WebRTC-Aec3ClampInstQualityToZeroKillSwitch',
'webrtc:10913',
INDEFINITE),
FieldTrial('WebRTC-Aec3CoarseFilterResetHangoverKillSwitch',
'webrtc:12265',
date(2024, 4, 1)),
FieldTrial('WebRTC-Aec3ConservativeTailFreqResponse',
'webrtc:13173',
date(2024, 4, 1)),
FieldTrial('WebRTC-Aec3DeactivateInitialStateResetKillSwitch',
'webrtc:11475',
date(2024, 4, 1)),
FieldTrial('WebRTC-Aec3DelayEstimateSmoothingDelayFoundOverride',
'webrtc:12775',
date(2024, 4, 1)),
FieldTrial('WebRTC-Aec3DelayEstimateSmoothingOverride',
'webrtc:12775',
date(2024, 4, 1)),
FieldTrial('WebRTC-Aec3EchoSaturationDetectionKillSwitch',
'webrtc:11475',
INDEFINITE),
FieldTrial('WebRTC-Aec3EnforceCaptureDelayEstimationDownmixing',
'webrtc:11153',
INDEFINITE),
FieldTrial(
'WebRTC-Aec3EnforceCaptureDelayEstimationLeftRightPrioritization',
'webrtc:11153',
INDEFINITE),
FieldTrial('WebRTC-Aec3EnforceConservativeHfSuppression',
'webrtc:11985',
date(2024, 4, 1)),
FieldTrial('WebRTC-Aec3EnforceLowActiveRenderLimit',
'webrtc:11475',
INDEFINITE),
FieldTrial('WebRTC-Aec3EnforceMoreTransparentNearendSuppressorHfTuning',
'webrtc:11487',
INDEFINITE),
FieldTrial('WebRTC-Aec3EnforceMoreTransparentNearendSuppressorTuning',
'webrtc:11475',
INDEFINITE),
FieldTrial('WebRTC-Aec3EnforceMoreTransparentNormalSuppressorHfTuning',
'webrtc:11487',
INDEFINITE),
FieldTrial('WebRTC-Aec3EnforceMoreTransparentNormalSuppressorTuning',
'webrtc:11475',
INDEFINITE),
FieldTrial('WebRTC-Aec3EnforceRapidlyAdjustingNearendSuppressorTunings',
'webrtc:11475',
INDEFINITE),
FieldTrial('WebRTC-Aec3EnforceRapidlyAdjustingNormalSuppressorTunings',
'webrtc:11475',
INDEFINITE),
FieldTrial('WebRTC-Aec3EnforceRenderDelayEstimationDownmixing',
'webrtc:11153',
INDEFINITE),
FieldTrial('WebRTC-Aec3EnforceSlowlyAdjustingNearendSuppressorTunings',
'webrtc:11475',
INDEFINITE),
FieldTrial('WebRTC-Aec3EnforceSlowlyAdjustingNormalSuppressorTunings',
'webrtc:11475',
INDEFINITE),
FieldTrial('WebRTC-Aec3EnforceStationarityProperties',
'webrtc:11475',
INDEFINITE),
FieldTrial('WebRTC-Aec3EnforceStationarityPropertiesAtInit',
'webrtc:11475',
INDEFINITE),
FieldTrial('WebRTC-Aec3EnforceVeryLowActiveRenderLimit',
'webrtc:11475',
INDEFINITE),
FieldTrial('WebRTC-Aec3HighPassFilterEchoReference',
'webrtc:12265',
date(2024, 4, 1)),
FieldTrial('WebRTC-Aec3MinErleDuringOnsetsKillSwitch',
'webrtc:10341',
date(2024, 4, 1)),
FieldTrial('WebRTC-Aec3NonlinearModeReverbKillSwitch',
'webrtc:11985',
date(2024, 4, 1)),
FieldTrial('WebRTC-Aec3OnsetDetectionKillSwitch',
'webrtc:11475',
INDEFINITE),
FieldTrial(
'WebRTC-Aec3RenderDelayEstimationLeftRightPrioritizationKillSwitch',
'webrtc:11153',
date(2024, 4, 1)),
FieldTrial('WebRTC-Aec3SensitiveDominantNearendActivation',
'webrtc:11475',
INDEFINITE),
FieldTrial('WebRTC-Aec3SetupSpecificDefaultConfigDefaultsKillSwitch',
'webrtc:11151',
INDEFINITE),
FieldTrial('WebRTC-Aec3ShortHeadroomKillSwitch',
'webrtc:10341',
date(2024, 4, 1)),
FieldTrial('WebRTC-Aec3StereoContentDetectionKillSwitch',
'webrtc:14900',
INDEFINITE),
FieldTrial('WebRTC-Aec3SuppressorAntiHowlingGainOverride',
'webrtc:11487',
INDEFINITE),
FieldTrial('WebRTC-Aec3SuppressorDominantNearendEnrExitThresholdOverride',
'webrtc:11487',
INDEFINITE),
FieldTrial('WebRTC-Aec3SuppressorDominantNearendEnrThresholdOverride',
'webrtc:11487',
INDEFINITE),
FieldTrial('WebRTC-Aec3SuppressorDominantNearendHoldDurationOverride',
'webrtc:11487',
INDEFINITE),
FieldTrial('WebRTC-Aec3SuppressorDominantNearendSnrThresholdOverride',
'webrtc:11487',
INDEFINITE),
FieldTrial('WebRTC-Aec3SuppressorDominantNearendTriggerThresholdOverride',
'webrtc:11487',
INDEFINITE),
FieldTrial('WebRTC-Aec3SuppressorNearendHfMaskSuppressOverride',
'webrtc:11487',
INDEFINITE),
FieldTrial('WebRTC-Aec3SuppressorNearendHfMaskTransparentOverride',
'webrtc:11487',
INDEFINITE),
FieldTrial('WebRTC-Aec3SuppressorNearendLfMaskSuppressOverride',
'webrtc:11487',
INDEFINITE),
FieldTrial('WebRTC-Aec3SuppressorNearendLfMaskTransparentOverride',
'webrtc:11487',
date(2024, 4, 1)),
FieldTrial('WebRTC-Aec3SuppressorNearendMaxDecFactorLfOverride',
'webrtc:11487',
date(2024, 4, 1)),
FieldTrial('WebRTC-Aec3SuppressorNearendMaxIncFactorOverride',
'webrtc:11487',
date(2024, 4, 1)),
FieldTrial('WebRTC-Aec3SuppressorNormalHfMaskSuppressOverride',
'webrtc:11487',
date(2024, 4, 1)),
FieldTrial('WebRTC-Aec3SuppressorNormalHfMaskTransparentOverride',
'webrtc:11487',
date(2024, 4, 1)),
FieldTrial('WebRTC-Aec3SuppressorNormalLfMaskSuppressOverride',
'webrtc:11487',
date(2024, 4, 1)),
FieldTrial('WebRTC-Aec3SuppressorNormalLfMaskTransparentOverride',
'webrtc:11487',
date(2024, 4, 1)),
FieldTrial('WebRTC-Aec3SuppressorNormalMaxDecFactorLfOverride',
'webrtc:11487',
date(2024, 4, 1)),
FieldTrial('WebRTC-Aec3SuppressorNormalMaxIncFactorOverride',
'webrtc:11487',
date(2024, 4, 1)),
FieldTrial('WebRTC-Aec3SuppressorTuningOverride',
'webrtc:11487',
date(2024, 4, 1)),
FieldTrial('WebRTC-Aec3TransparentAntiHowlingGain',
'webrtc:11475',
date(2024, 4, 1)),
FieldTrial('WebRTC-Aec3TransparentModeHmm',
'webrtc:12265',
date(2024, 4, 1)),
FieldTrial('WebRTC-Aec3TransparentModeKillSwitch',
'webrtc:9256',
date(2024, 4, 1)),
FieldTrial('WebRTC-Aec3Use1Dot2SecondsInitialStateDuration',
'webrtc:11475',
date(2024, 4, 1)),
FieldTrial('WebRTC-Aec3Use1Dot6SecondsInitialStateDuration',
'webrtc:11475',
date(2024, 4, 1)),
FieldTrial('WebRTC-Aec3Use2Dot0SecondsInitialStateDuration',
'webrtc:11475',
date(2024, 4, 1)),
FieldTrial('WebRTC-Aec3UseDot1SecondsInitialStateDuration',
'webrtc:11475',
date(2024, 4, 1)),
FieldTrial('WebRTC-Aec3UseDot2SecondsInitialStateDuration',
'webrtc:11475',
date(2024, 4, 1)),
FieldTrial('WebRTC-Aec3UseDot3SecondsInitialStateDuration',
'webrtc:11475',
date(2024, 4, 1)),
FieldTrial('WebRTC-Aec3UseDot6SecondsInitialStateDuration',
'webrtc:11475',
date(2024, 4, 1)),
FieldTrial('WebRTC-Aec3UseDot9SecondsInitialStateDuration',
'webrtc:11475',
date(2024, 4, 1)),
FieldTrial('WebRTC-Aec3UseErleOnsetCompensationInDominantNearend',
'webrtc:12686',
date(2024, 4, 1)),
FieldTrial('WebRTC-Aec3UseLowEarlyReflectionsDefaultGain',
'webrtc:11475',
date(2024, 4, 1)),
FieldTrial('WebRTC-Aec3UseLowLateReflectionsDefaultGain',
'webrtc:11475',
date(2024, 4, 1)),
FieldTrial('WebRTC-Aec3UseNearendReverbLen',
'webrtc:13143',
INDEFINITE),
FieldTrial('WebRTC-Aec3UseShortConfigChangeDuration',
'webrtc:11475',
date(2024, 4, 1)),
FieldTrial('WebRTC-Aec3UseZeroInitialStateDuration',
'webrtc:11475',
date(2024, 4, 1)),
FieldTrial('WebRTC-Aec3VerySensitiveDominantNearendActivation',
'webrtc:11475',
date(2024, 4, 1)),
FieldTrial('WebRTC-Agc2SimdAvx2KillSwitch',
'webrtc:7494',
date(2024, 4, 1)),
FieldTrial('WebRTC-Agc2SimdNeonKillSwitch',
'webrtc:7494',
date(2024, 4, 1)),
FieldTrial('WebRTC-Agc2SimdSse2KillSwitch',
'webrtc:7494',
date(2024, 4, 1)),
FieldTrial('WebRTC-AllowMACBasedIPv6',
'webrtc:12268',
date(2024, 4, 1)),
FieldTrial('WebRTC-AlrDetectorParameters',
'webrtc:10542',
INDEFINITE),
FieldTrial('WebRTC-AndroidNetworkMonitor-IsAdapterAvailable',
'webrtc:13741',
date(2024, 4, 1)),
FieldTrial('WebRTC-ApmExperimentalMultiChannelCaptureKillSwitch',
'webrtc:14901',
INDEFINITE),
FieldTrial('WebRTC-ApmExperimentalMultiChannelRenderKillSwitch',
'webrtc:14902',
INDEFINITE),
FieldTrial('WebRTC-Audio-2ndAgcMinMicLevelExperiment',
'chromium:1275566',
date(2024, 4, 1)),
FieldTrial('WebRTC-Audio-ABWENoTWCC',
'webrtc:8243',
INDEFINITE),
FieldTrial('WebRTC-Audio-AdaptivePtime',
'chromium:1086942',
date(2024, 4, 1)),
FieldTrial('WebRTC-Audio-Allocation',
'webrtc:10286',
INDEFINITE),
FieldTrial('WebRTC-Audio-AlrProbing',
'webrtc:10200',
date(2024, 4, 1)),
FieldTrial('WebRTC-Audio-FecAdaptation',
'webrtc:8127',
date(2024, 4, 1)),
FieldTrial('WebRTC-Audio-LegacyOverhead',
'webrtc:11001',
INDEFINITE),
FieldTrial('WebRTC-Audio-MinimizeResamplingOnMobile',
'webrtc:6181',
date(2024, 4, 1)),
FieldTrial('WebRTC-Audio-NetEqDecisionLogicConfig',
'webrtc:13322',
date(2024, 4, 1)),
FieldTrial('WebRTC-Audio-NetEqDelayManagerConfig',
'webrtc:10333',
date(2024, 4, 1)),
FieldTrial('WebRTC-Audio-NetEqNackTrackerConfig',
'webrtc:10178',
date(2024, 4, 1)),
FieldTrial('WebRTC-Audio-NetEqSmartFlushing',
'webrtc:12201',
date(2024, 4, 1)),
FieldTrial('WebRTC-Audio-OpusAvoidNoisePumpingDuringDtx',
'webrtc:12380',
date(2024, 4, 1)),
FieldTrial('WebRTC-Audio-OpusBitrateMultipliers',
'webrtc:11055',
date(2024, 4, 1)),
FieldTrial('WebRTC-Audio-OpusPlcUsePrevDecodedSamples',
'b/143582588',
date(2024, 4, 1)),
FieldTrial('WebRTC-Audio-Red-For-Opus',
'webrtc:11640',
date(2024, 4, 1)),
FieldTrial('WebRTC-Audio-StableTargetAdaptation',
'webrtc:10981',
INDEFINITE),
FieldTrial('WebRTC-Audio-iOS-Holding',
'webrtc:8126',
date(2024, 4, 1)),
FieldTrial('WebRTC-AudioDevicePlayoutBufferSizeFactor',
'webrtc:10928',
date(2024, 4, 1)),
FieldTrial('WebRTC-AutomaticAnimationDetectionScreenshare',
'webrtc:11058',
date(2024, 4, 1)),
FieldTrial('WebRTC-Avx2SupportKillSwitch',
'webrtc:11663',
date(2024, 4, 1)),
FieldTrial('WebRTC-BindUsingInterfaceName',
'webrtc:10707',
date(2024, 4, 1)),
FieldTrial('WebRTC-BoostedScreenshareQp',
'webrtc:9659',
date(2024, 4, 1)),
FieldTrial('WebRTC-Bwe-AllocationProbing',
'webrtc:10394',
date(2024, 4, 1)),
FieldTrial('WebRTC-Bwe-AlrProbing',
'webrtc:10394',
date(2024, 4, 1)),
FieldTrial('WebRTC-Bwe-EstimateBoundedIncrease',
'webrtc:10498',
date(2024, 4, 1)),
FieldTrial('WebRTC-Bwe-ExponentialProbing',
'webrtc:10394',
date(2024, 4, 1)),
FieldTrial('WebRTC-Bwe-IgnoreProbesLowerThanNetworkStateEstimate',
'webrtc:10498',
date(2024, 4, 1)),
FieldTrial('WebRTC-Bwe-InitialProbing',
'webrtc:10394',
date(2024, 4, 1)),
FieldTrial('WebRTC-Bwe-InjectedCongestionController',
'webrtc:8415',
INDEFINITE),
FieldTrial('WebRTC-Bwe-LimitProbesLowerThanThroughputEstimate',
'webrtc:11498',
date(2024, 4, 1)),
FieldTrial('WebRTC-Bwe-LinkCapacity',
'webrtc:9718',
date(2024, 4, 1)),
FieldTrial('WebRTC-Bwe-LossBasedBweV2',
'webrtc:12707',
date(2024, 4, 1)),
FieldTrial('WebRTC-Bwe-LossBasedControl',
'',
date(2024, 4, 1)),
FieldTrial('WebRTC-Bwe-MaxRttLimit',
'webrtc:9718',
INDEFINITE),
FieldTrial('WebRTC-Bwe-MinAllocAsLowerBound',
'',
date(2024, 4, 1)),
FieldTrial('WebRTC-Bwe-NetworkRouteConstraints',
'webrtc:11434',
date(2024, 4, 1)),
FieldTrial('WebRTC-Bwe-NoFeedbackReset',
'webrtc:9718',
date(2024, 4, 1)),
FieldTrial('WebRTC-Bwe-PaceAtMaxOfBweAndLowerLinkCapacity',
'',
date(2024, 4, 1)),
FieldTrial('WebRTC-Bwe-ProbingBehavior',
'webrtc:10394',
date(2024, 4, 1)),
FieldTrial('WebRTC-Bwe-ProbingConfiguration',
'webrtc:10394',
date(2024, 4, 1)),
FieldTrial('WebRTC-Bwe-ReceiveTimeFix',
'webrtc:9054',
date(2024, 4, 1)),
FieldTrial('WebRTC-Bwe-ReceiverLimitCapsOnly',
'webrtc:12306',
date(2024, 4, 1)),
FieldTrial('WebRTC-Bwe-RobustThroughputEstimatorSettings',
'webrtc:10274',
date(2024, 4, 1)),
FieldTrial('WebRTC-Bwe-SafeResetOnRouteChange',
'webrtc:9718',
INDEFINITE),
FieldTrial('WebRTC-Bwe-SeparateAudioPackets',
'webrtc:10932',
date(2024, 4, 1)),
FieldTrial('WebRTC-Bwe-TrendlineEstimatorSettings',
'webrtc:10932',
date(2024, 4, 1)),
FieldTrial('WebRTC-BweBackOffFactor',
'webrtc:8212',
INDEFINITE),
FieldTrial('WebRTC-BweLossExperiment',
'webrtc:5839',
date(2024, 4, 1)),
FieldTrial('WebRTC-BweRapidRecoveryExperiment',
'webrtc:8015',
date(2024, 4, 1)),
FieldTrial('WebRTC-BweThroughputWindowConfig',
'webrtc:10274',
date(2024, 4, 1)),
FieldTrial('WebRTC-BweWindowSizeInPackets',
'webrtc:8212',
INDEFINITE),
FieldTrial('WebRTC-CongestionWindow',
'webrtc:14898',
INDEFINITE),
FieldTrial('WebRTC-CpuLoadEstimator',
'webrtc:8504',
date(2024, 4, 1)),
FieldTrial('WebRTC-Debugging-RtpDump',
'webrtc:10675',
INDEFINITE),
FieldTrial('WebRTC-DecoderDataDumpDirectory',
'webrtc:14236',
INDEFINITE),
FieldTrial('WebRTC-DefaultBitrateLimitsKillSwitch',
'',
date(2024, 4, 1)),
FieldTrial('WebRTC-DependencyDescriptorAdvertised',
'webrtc:10342',
date(2024, 4, 1)),
FieldTrial('WebRTC-DisableUlpFecExperiment',
'',
date(2024, 4, 1)),
FieldTrial('WebRTC-DontIncreaseDelayBasedBweInAlr',
'webrtc:10542',
date(2024, 4, 1)),
FieldTrial('WebRTC-DscpFieldTrial',
'webrtc:13622',
date(2024, 4, 1)),
FieldTrial('WebRTC-ExtraICEPing',
'webrtc:10273',
date(2024, 4, 1)),
FieldTrial('WebRTC-FakeNetworkReceiveConfig',
'webrtc:14238',
INDEFINITE),
FieldTrial('WebRTC-FakeNetworkSendConfig',
'webrtc:14238',
INDEFINITE),
FieldTrial('WebRTC-FilterAbsSendTimeExtension',
'webrtc:10234',
INDEFINITE),
FieldTrial('WebRTC-FindNetworkHandleWithoutIpv6TemporaryPart',
'webrtc:11067',
date(2024, 4, 1)),
FieldTrial('WebRTC-FlexFEC-03',
'webrtc:5654',
date(2024, 4, 1)),
FieldTrial('WebRTC-FlexFEC-03-Advertised',
'webrtc:5654',
date(2024, 4, 1)),
FieldTrial('WebRTC-ForcePlayoutDelay',
'webrtc:11896',
INDEFINITE),
FieldTrial('WebRTC-ForceSendPlayoutDelay',
'webrtc:11896',
INDEFINITE),
FieldTrial('WebRTC-ForceSimulatedOveruseIntervalMs',
'webrtc:14239',
INDEFINITE),
FieldTrial('WebRTC-FrameDropper',
'webrtc:9711',
INDEFINITE),
FieldTrial('WebRTC-FullBandHpfKillSwitch',
'webrtc:11193',
date(2024, 4, 1)),
FieldTrial('WebRTC-GenericCodecDependencyDescriptor',
'webrtc:14969',
INDEFINITE),
FieldTrial('WebRTC-GenericDescriptorAdvertised',
'webrtc:9361',
INDEFINITE),
FieldTrial('WebRTC-GenericDescriptorAuth',
'webrtc:10103',
INDEFINITE),
FieldTrial('WebRTC-GenericPictureId',
'webrtc:9361',
INDEFINITE),
FieldTrial('WebRTC-GetEncoderInfoOverride',
'',
date(2024, 4, 1)),
FieldTrial('WebRTC-H264HighProfile',
'webrtc:6337',
date(2024, 4, 1)),
FieldTrial('WebRTC-IPv6Default',
'chromium:413437',
date(2024, 4, 1)),
FieldTrial('WebRTC-IceControllerFieldTrials',
'chromium:1024965',
INDEFINITE),
FieldTrial('WebRTC-IceFieldTrials',
'webrtc:11021',
INDEFINITE),
FieldTrial('WebRTC-KeyframeInterval',
'webrtc:10427',
INDEFINITE),
FieldTrial('WebRTC-LegacyFrameIdJumpBehavior',
'webrtc:13343',
date(2024, 4, 1)),
FieldTrial('WebRTC-LegacySimulcastLayerLimit',
'webrtc:8785',
INDEFINITE),
FieldTrial('WebRTC-LegacyTlsProtocols',
'webrtc:10261',
date(2024, 4, 1)),
FieldTrial('WebRTC-LowresSimulcastBitrateInterpolation',
'webrtc:12415',
date(2024, 4, 1)),
FieldTrial('WebRTC-MutedStateKillSwitch',
'b/177830919',
date(2024, 4, 1)),
FieldTrial('WebRTC-Network-UseNWPathMonitor',
'webrtc:10966',
date(2024, 4, 1)),
FieldTrial('WebRTC-NetworkMonitorAutoDetect',
'webrtc:13741',
date(2024, 4, 1)),
FieldTrial('WebRTC-NormalizeSimulcastResolution',
'',
INDEFINITE),
FieldTrial('WebRTC-Pacer-BlockAudio',
'webrtc:8415',
INDEFINITE),
FieldTrial('WebRTC-Pacer-DrainQueue',
'webrtc:8415',
date(2024, 4, 1)),
FieldTrial('WebRTC-Pacer-IgnoreTransportOverhead',
'webrtc:9883',
INDEFINITE),
FieldTrial('WebRTC-Pacer-PadInSilence',
'webrtc:8415',
date(2024, 4, 1)),
FieldTrial('WebRTC-PacketBufferMaxSize',
'webrtc:9851',
INDEFINITE),
FieldTrial('WebRTC-PcFactoryDefaultBitrates',
'webrtc:10865',
date(2024, 4, 1)),
FieldTrial('WebRTC-PiggybackIceCheckAcknowledgement',
'',
date(2024, 4, 1)),
FieldTrial('WebRTC-PixelLimitResource',
'webrtc:12261',
INDEFINITE),
FieldTrial('WebRTC-ProbingScreenshareBwe',
'webrtc:7694',
date(2024, 4, 1)),
FieldTrial('WebRTC-ProtectionOverheadRateThreshold',
'webrtc:14899',
INDEFINITE),
FieldTrial('WebRTC-QpParsingKillSwitch',
'webrtc:12542',
date(2024, 4, 1)),
FieldTrial('WebRTC-RtcEventLogKillSwitch',
'webrtc:12084',
INDEFINITE),
FieldTrial('WebRTC-RtcEventLogNewFormat',
'webrtc:8111',
date(2024, 4, 1)),
FieldTrial('WebRTC-RtcpLossNotification',
'webrtc:10336',
date(2024, 4, 1)),
FieldTrial('WebRTC-SendBufferSizeBytes',
'webrtc:11905',
date(2024, 4, 1)),
FieldTrial('WebRTC-SendNackDelayMs',
'webrtc:9953',
date(2024, 4, 1)),
FieldTrial('WebRTC-SetSocketReceiveBuffer',
'webrtc:13753',
date(2024, 4, 1)),
FieldTrial('WebRTC-SignalNetworkPreferenceChange',
'webrtc:11825',
date(2024, 4, 1)),
FieldTrial('WebRTC-SimulcastEncoderAdapter-GetEncoderInfoOverride',
'',
date(2024, 4, 1)),
FieldTrial('WebRTC-SimulcastLayerLimitRoundUp',
'',
date(2024, 4, 1)),
FieldTrial('WebRTC-SpsPpsIdrIsH264Keyframe',
'webrtc:8423',
INDEFINITE),
FieldTrial('WebRTC-StableTargetRate',
'webrtc:10126',
date(2024, 4, 1)),
FieldTrial('WebRTC-StrictPacingAndProbing',
'webrtc:8072',
date(2024, 4, 1)),
FieldTrial('WebRTC-StunInterPacketDelay',
'',
date(2024, 4, 1)),
FieldTrial('WebRTC-SurfaceCellularTypes',
'webrtc:11473',
date(2024, 4, 1)),
FieldTrial('WebRTC-SwitchEncoderOnInitializationFailures',
'webrtc:13572',
date(2024, 4, 1)),
FieldTrial('WebRTC-Target-Bitrate-Rtcp',
'webrtc:9969',
INDEFINITE),
FieldTrial('WebRTC-TransientSuppressorForcedOff',
'chromium:1186705',
INDEFINITE),
FieldTrial('WebRTC-UseBaseHeavyVP8TL3RateAllocation',
'webrtc:9477',
date(2024, 4, 1)),
FieldTrial('WebRTC-UseDifferentiatedCellularCosts',
'webrtc:11473',
date(2024, 4, 1)),
FieldTrial('WebRTC-UseShortVP8TL2Pattern',
'webrtc:9477',
INDEFINITE),
FieldTrial('WebRTC-UseShortVP8TL3Pattern',
'webrtc:8162',
INDEFINITE),
FieldTrial('WebRTC-UseStandardBytesStats',
'webrtc:10525',
date(2024, 4, 1)),
FieldTrial('WebRTC-UseTurnServerAsStunServer',
'webrtc:11059',
date(2024, 4, 1)),
FieldTrial('WebRTC-VP8-CpuSpeed-Arm',
'',
date(2024, 4, 1)),
FieldTrial('WebRTC-VP8-ForcePartitionResilience',
'webrtc:11832',
INDEFINITE),
FieldTrial('WebRTC-VP8-Forced-Fallback-Encoder-v2',
'webrtc:6634',
INDEFINITE),
FieldTrial('WebRTC-VP8-GetEncoderInfoOverride',
'webrtc:11832',
INDEFINITE),
FieldTrial('WebRTC-VP8-Postproc-Config',
'webrtc:11551',
date(2024, 4, 1)),
FieldTrial('WebRTC-VP8-Postproc-Config-Arm',
'webrtc:6634',
INDEFINITE),
FieldTrial('WebRTC-VP8ConferenceTemporalLayers',
'webrtc:9260',
INDEFINITE),
FieldTrial('WebRTC-VP8IosMaxNumberOfThread',
'webrtc:10005',
date(2024, 4, 1)),
FieldTrial('WebRTC-VP8VariableFramerateScreenshare',
'webrtc:10310',
date(2024, 4, 1)),
FieldTrial('WebRTC-VP9-GetEncoderInfoOverride',
'',
date(2024, 4, 1)),
FieldTrial('WebRTC-VP9-LowTierOptimizations',
'webrtc:13888',
date(2024, 4, 1)),
FieldTrial('WebRTC-VP9-PerformanceFlags',
'webrtc:11551',
date(2024, 4, 1)),
FieldTrial('WebRTC-VP9QualityScaler',
'webrtc:11319',
date(2024, 4, 1)),
FieldTrial('WebRTC-VP9VariableFramerateScreenshare',
'webrtc:10310',
date(2024, 4, 1)),
FieldTrial('WebRTC-Video-BalancedDegradation',
'webrtc:7607',
INDEFINITE),
FieldTrial('WebRTC-Video-BalancedDegradationSettings',
'',
INDEFINITE),
FieldTrial('WebRTC-Video-BandwidthQualityScalerSettings',
'webrtc:12942',
INDEFINITE),
FieldTrial('WebRTC-Video-DisableAutomaticResize',
'webrtc:11812',
date(2024, 4, 1)),
FieldTrial('WebRTC-Video-DiscardPacketsWithUnknownSsrc',
'webrtc:9871',
INDEFINITE),
FieldTrial('WebRTC-Video-ForcedSwDecoderFallback',
'',
INDEFINITE),
FieldTrial('WebRTC-Video-InitialDecoderResolution',
'webrtc:11898',
date(2024, 4, 1)),
FieldTrial('WebRTC-Video-MinVideoBitrate',
'webrtc:10915',
date(2024, 4, 1)),
FieldTrial('WebRTC-Video-Pacing',
'webrtc:10038',
date(2024, 4, 1)),
FieldTrial('WebRTC-Video-PreferTemporalSupportOnBaseLayer',
'webrtc:11324',
INDEFINITE),
FieldTrial('WebRTC-Video-QualityRampupSettings',
'',
date(2024, 4, 1)),
FieldTrial('WebRTC-Video-QualityScalerSettings',
'',
INDEFINITE),
FieldTrial('WebRTC-Video-QualityScaling',
'webrtc:9169',
INDEFINITE),
FieldTrial('WebRTC-Video-UseFrameRateForOverhead',
'b/166341943',
date(2024, 4, 1)),
FieldTrial('WebRTC-Video-VariableStartScaleFactor',
'',
date(2024, 4, 1)),
FieldTrial('WebRTC-VideoFrameTrackingIdAdvertised',
'webrtc:12594',
INDEFINITE),
FieldTrial('WebRTC-VideoLayersAllocationAdvertised',
'webrtc:1200',
INDEFINITE),
FieldTrial('WebRTC-VideoRateControl',
'webrtc:10223',
INDEFINITE),
FieldTrial('WebRTC-VoIPChannelRemixingAdjustmentKillSwitch',
'chromium:1027117',
date(2024, 4, 1)),
FieldTrial('WebRTC-Vp9ExternalRefCtrl',
'webrtc:9585',
date(2024, 4, 1)),
FieldTrial('WebRTC-Vp9InterLayerPred',
'chromium:949536',
INDEFINITE),
FieldTrial('WebRTC-Vp9IssueKeyFrameOnLayerDeactivation',
'chromium:889017',
date(2024, 4, 1)),
FieldTrial('WebRTC-ZeroHertzScreenshare',
'chromium:1255737',
date(2024, 4, 1)),
FieldTrial('WebRTC-ZeroPlayoutDelay',
'chromium:1335323',
date(2024, 4, 1)),
# keep-sorted end
]) # yapf: disable
POLICY_EXEMPT_FIELD_TRIALS_DIGEST: str = \
'3026f839766eb90355893fa0f1af8e9bf0d0dca1'
REGISTERED_FIELD_TRIALS: FrozenSet[FieldTrial] = ACTIVE_FIELD_TRIALS.union(
POLICY_EXEMPT_FIELD_TRIALS)
def todays_date() -> date:
now = datetime.datetime.now(datetime.timezone.utc)
return date(now.year, now.month, now.day)
def registry_header(
field_trials: FrozenSet[FieldTrial] = REGISTERED_FIELD_TRIALS) -> str:
"""Generates a C++ header with all field trial keys.
Args:
field_trials: Field trials to include in the header.
Returns:
String representation of a C++ header file containing all field trial
keys.
>>> trials = {
... FieldTrial('B', '', date(1, 1, 1)),
... FieldTrial('A', '', date(1, 1, 1)),
... FieldTrial('B', '', date(2, 2, 2)),
... }
>>> print(registry_header(trials))
// This file was automatically generated. Do not edit.
<BLANKLINE>
#ifndef GEN_REGISTERED_FIELD_TRIALS_H_
#define GEN_REGISTERED_FIELD_TRIALS_H_
<BLANKLINE>
#include "absl/strings/string_view.h"
<BLANKLINE>
namespace webrtc {
<BLANKLINE>
inline constexpr absl::string_view kRegisteredFieldTrials[] = {
"A",
"B",
};
<BLANKLINE>
} // namespace webrtc
<BLANKLINE>
#endif // GEN_REGISTERED_FIELD_TRIALS_H_
<BLANKLINE>
"""
registered_keys = {f.key for f in field_trials}
keys = '\n'.join(f' "{k}",' for k in sorted(registered_keys))
return ('// This file was automatically generated. Do not edit.\n'
'\n'
'#ifndef GEN_REGISTERED_FIELD_TRIALS_H_\n'
'#define GEN_REGISTERED_FIELD_TRIALS_H_\n'
'\n'
'#include "absl/strings/string_view.h"\n'
'\n'
'namespace webrtc {\n'
'\n'
'inline constexpr absl::string_view kRegisteredFieldTrials[] = {\n'
f'{keys}\n'
'};\n'
'\n'
'} // namespace webrtc\n'
'\n'
'#endif // GEN_REGISTERED_FIELD_TRIALS_H_\n')
def expired_field_trials(
threshold: date,
field_trials: FrozenSet[FieldTrial] = REGISTERED_FIELD_TRIALS
) -> Set[FieldTrial]:
"""Obtains expired field trials.
Args:
threshold: Date from which to check end date.
field_trials: Field trials to validate.
Returns:
All expired field trials.
>>> trials = {
... FieldTrial('Expired', '', date(1, 1, 1)),
... FieldTrial('Not-Expired', '', date(1, 1, 2)),
... }
>>> expired_field_trials(date(1, 1, 1), trials)
{FieldTrial(key='Expired', bug='', end_date=datetime.date(1, 1, 1))}
"""