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1 /* | |
2 * Copyright 2016 The WebRTC Project Authors. All rights reserved. | |
3 * | |
4 * Use of this source code is governed by a BSD-style license | |
5 * that can be found in the LICENSE file in the root of the source | |
6 * tree. An additional intellectual property rights grant can be found | |
7 * in the file PATENTS. All contributing project authors may | |
8 * be found in the AUTHORS file in the root of the source tree. | |
9 */ | |
10 | |
11 #import <Foundation/Foundation.h> | |
12 | |
13 NS_ASSUME_NONNULL_BEGIN | |
14 /** | |
15 * Model class for user defined media constraints. | |
16 * | |
17 * Currently used for streaming media constraints only. | |
18 * In future audio media constraints support can be added as well. | |
19 * Offers list of avaliable video resolutions that can construct streaming media
constraint. | |
20 * Exposes methods for reading and storing media constraints from persistent sto
re. | |
21 * Also translates current user defined media constraint into RTCMediaConstraint
s | |
22 * dictionary. | |
23 */ | |
24 @interface ARDMediaConstraintsModel : NSObject | |
25 | |
26 /** | |
27 * Returns array of available capture resoultions. | |
28 * | |
29 * The capture resolutions are represented as strings in the following format | |
30 * [width]x[height] | |
31 */ | |
32 - (NSArray<NSString *> *)availableVideoResoultionsMediaConstraints; | |
33 | |
34 /** | |
35 * Returns current video resolution media constraint string. | |
36 * If no constraint is in store, default value of 640x480 is returned. | |
37 * When defaulting to value, the default is saved in store for consistency reaso
ns. | |
38 */ | |
39 - (NSString *)currentVideoResoultionConstraintFromStore; | |
40 | |
41 /** | |
42 * Stores the provided video resolution media constraint string into the store. | |
43 * | |
44 * If the provided constraint is no part of the available video resolutions | |
45 * the store operation will not be executed and NO will be returned. | |
46 * @param constraint the string to be stored. | |
47 * @return YES/NO depending on success. | |
48 */ | |
49 - (BOOL)storeVideoResoultionConstraint:(NSString *)constraint; | |
50 | |
51 /** | |
52 * Converts the current media constraints from store into dictionary with RTCMed
iaConstraints | |
53 * values. | |
54 * | |
55 * @return NSDictionary with RTC width and height parameters | |
56 */ | |
57 - (nullable NSDictionary *)currentMediaConstraintFromStoreAsRTCDictionary; | |
58 | |
59 @end | |
60 NS_ASSUME_NONNULL_END | |
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