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/*
* Copyright 2018 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 "RTCDisplayLinkTimer.h"
#import <UIKit/UIKit.h>
@implementation RTCDisplayLinkTimer {
CADisplayLink *_displayLink;
void (^_timerHandler)(void);
}
- (instancetype)initWithTimerHandler:(void (^)(void))timerHandler {
NSParameterAssert(timerHandler);
self = [super init];
if (self) {
_timerHandler = timerHandler;
_displayLink =
[CADisplayLink displayLinkWithTarget:self
selector:@selector(displayLinkDidFire:)];
_displayLink.paused = YES;
#if __IPHONE_OS_VERSION_MIN_REQUIRED >= __IPHONE_10_0
_displayLink.preferredFramesPerSecond = 30;
#else
[_displayLink setFrameInterval:2];
#endif
[_displayLink addToRunLoop:[NSRunLoop currentRunLoop]
forMode:NSRunLoopCommonModes];
}
return self;
}
- (void)dealloc {
[self invalidate];
}
- (BOOL)isPaused {
return _displayLink.paused;
}
- (void)setIsPaused:(BOOL)isPaused {
_displayLink.paused = isPaused;
}
- (void)invalidate {
[_displayLink invalidate];
}
- (void)displayLinkDidFire:(CADisplayLink *)displayLink {
_timerHandler();
}
@end
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