/*
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* This file is part of the SDWebImage package.
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* (c) Olivier Poitrey <rs@dailymotion.com>
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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#import <Foundation/Foundation.h>
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#import "SDWebImageCompat.h"
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/// Cross-platform display link wrapper. Do not retain the target
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/// Use `CADisplayLink` on iOS/tvOS, `CVDisplayLink` on macOS, `NSTimer` on watchOS
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@interface SDDisplayLink : NSObject
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@property (readonly, nonatomic, weak, nullable) id target;
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@property (readonly, nonatomic, assign, nonnull) SEL selector;
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@property (readonly, nonatomic) NSTimeInterval duration; // elapsed time in seconds of previous callback. (or it's first callback, use the time between `start` and callback). Always zero when display link not running
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@property (readonly, nonatomic) BOOL isRunning;
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+ (nonnull instancetype)displayLinkWithTarget:(nonnull id)target selector:(nonnull SEL)sel;
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- (void)addToRunLoop:(nonnull NSRunLoop *)runloop forMode:(nonnull NSRunLoopMode)mode;
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- (void)removeFromRunLoop:(nonnull NSRunLoop *)runloop forMode:(nonnull NSRunLoopMode)mode;
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- (void)start;
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- (void)stop;
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@end
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