62 lines
2.3 KiB
Text
62 lines
2.3 KiB
Text
/*
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* Copyright 2016 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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#import "RTCFieldTrials.h"
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#include <memory>
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#import "base/RTCLogging.h"
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#include "system_wrappers/include/field_trial.h"
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NSString *const kRTCFieldTrialAudioForceABWENoTWCCKey =
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@"WebRTC-Audio-ABWENoTWCC";
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NSString *const kRTCFieldTrialFlexFec03AdvertisedKey =
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@"WebRTC-FlexFEC-03-Advertised";
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NSString *const kRTCFieldTrialFlexFec03Key = @"WebRTC-FlexFEC-03";
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NSString *const kRTCFieldTrialH264HighProfileKey = @"WebRTC-H264HighProfile";
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NSString *const kRTCFieldTrialMinimizeResamplingOnMobileKey =
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@"WebRTC-Audio-MinimizeResamplingOnMobile";
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NSString *const kRTCFieldTrialUseNWPathMonitor =
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@"WebRTC-Network-UseNWPathMonitor";
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NSString *const kRTCFieldTrialEnabledValue = @"Enabled";
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// InitFieldTrialsFromString stores the char*, so the char array must outlive
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// the application.
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static char *gFieldTrialInitString = nullptr;
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void RTCInitFieldTrialDictionary(
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NSDictionary<NSString *, NSString *> *fieldTrials) {
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if (!fieldTrials) {
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RTCLogWarning(@"No fieldTrials provided.");
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return;
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}
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// Assemble the keys and values into the field trial string.
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// We don't perform any extra format checking. That should be done by the
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// underlying WebRTC calls.
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NSMutableString *fieldTrialInitString = [NSMutableString string];
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for (NSString *key in fieldTrials) {
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NSString *fieldTrialEntry =
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[NSString stringWithFormat:@"%@/%@/", key, fieldTrials[key]];
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[fieldTrialInitString appendString:fieldTrialEntry];
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}
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size_t len = fieldTrialInitString.length + 1;
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if (gFieldTrialInitString != nullptr) {
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delete[] gFieldTrialInitString;
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}
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gFieldTrialInitString = new char[len];
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if (![fieldTrialInitString getCString:gFieldTrialInitString
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maxLength:len
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encoding:NSUTF8StringEncoding]) {
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RTCLogError(@"Failed to convert field trial string.");
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return;
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}
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webrtc::field_trial::InitFieldTrialsFromString(gFieldTrialInitString);
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}
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