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diff --git a/third_party/libwebrtc/examples/objc/AppRTCMobile/ARDSettingsModel.h b/third_party/libwebrtc/examples/objc/AppRTCMobile/ARDSettingsModel.h
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+++ b/third_party/libwebrtc/examples/objc/AppRTCMobile/ARDSettingsModel.h
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+/*
+ *  Copyright 2016 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 <Foundation/Foundation.h>
+
+#import "sdk/objc/base/RTCVideoCodecInfo.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+/**
+ * Model class for user defined settings.
+ *
+ * Handles storing the settings and provides default values if setting is not
+ * set. Also provides list of available options for different settings. Stores
+ * for example video codec, video resolution and maximum bitrate.
+ */
+@interface ARDSettingsModel : NSObject
+
+/**
+ * Returns array of available capture resoultions.
+ *
+ * The capture resolutions are represented as strings in the following format
+ * [width]x[height]
+ */
+- (NSArray<NSString *> *)availableVideoResolutions;
+
+/**
+ * Returns current video resolution string.
+ * If no resolution is in store, default value of 640x480 is returned.
+ * When defaulting to value, the default is saved in store for consistency reasons.
+ */
+- (NSString *)currentVideoResolutionSettingFromStore;
+- (int)currentVideoResolutionWidthFromStore;
+- (int)currentVideoResolutionHeightFromStore;
+
+/**
+ * Stores the provided video resolution string into the store.
+ *
+ * If the provided resolution is no part of the available video resolutions
+ * the store operation will not be executed and NO will be returned.
+ * @param resolution the string to be stored.
+ * @return YES/NO depending on success.
+ */
+- (BOOL)storeVideoResolutionSetting:(NSString *)resolution;
+
+/**
+ * Returns array of available video codecs.
+ */
+- (NSArray<RTC_OBJC_TYPE(RTCVideoCodecInfo) *> *)availableVideoCodecs;
+
+/**
+ * Returns current video codec setting from store if present or default (H264) otherwise.
+ */
+- (RTC_OBJC_TYPE(RTCVideoCodecInfo) *)currentVideoCodecSettingFromStore;
+
+/**
+ * Stores the provided video codec setting into the store.
+ *
+ * If the provided video codec is not part of the available video codecs
+ * the store operation will not be executed and NO will be returned.
+ * @param video codec settings the string to be stored.
+ * @return YES/NO depending on success.
+ */
+- (BOOL)storeVideoCodecSetting:(RTC_OBJC_TYPE(RTCVideoCodecInfo) *)videoCodec;
+
+/**
+ * Returns current max bitrate setting from store if present.
+ */
+- (nullable NSNumber *)currentMaxBitrateSettingFromStore;
+
+/**
+ * Stores the provided bitrate value into the store.
+ *
+ * @param bitrate NSNumber representation of the max bitrate value.
+ */
+- (void)storeMaxBitrateSetting:(nullable NSNumber *)bitrate;
+
+/**
+ * Returns current audio only setting from store if present or default (NO) otherwise.
+ */
+- (BOOL)currentAudioOnlySettingFromStore;
+
+/**
+ * Stores the provided audio only setting into the store.
+ *
+ * @param setting the boolean value to be stored.
+ */
+- (void)storeAudioOnlySetting:(BOOL)audioOnly;
+
+/**
+ * Returns current create AecDump setting from store if present or default (NO) otherwise.
+ */
+- (BOOL)currentCreateAecDumpSettingFromStore;
+
+/**
+ * Stores the provided create AecDump setting into the store.
+ *
+ * @param setting the boolean value to be stored.
+ */
+- (void)storeCreateAecDumpSetting:(BOOL)createAecDump;
+
+/**
+ * Returns current setting whether to use manual audio config from store if present or default (YES)
+ * otherwise.
+ */
+- (BOOL)currentUseManualAudioConfigSettingFromStore;
+
+/**
+ * Stores the provided use manual audio config setting into the store.
+ *
+ * @param setting the boolean value to be stored.
+ */
+- (void)storeUseManualAudioConfigSetting:(BOOL)useManualAudioConfig;
+
+@end
+NS_ASSUME_NONNULL_END