CVDisplayLink based animator example.

CVDisplayLink

CVReturn displayLinkOutputCallback(
        CVDisplayLinkRef displayLink,
        const CVTimeStamp *inNow,
        const CVTimeStamp *inOutputTime,
        CVOptionFlags flagsIn,
        CVOptionFlags *flagsOut,
        void *displayLinkContext)
{
    @autoreleasepool {
        Animator *self = (__bridge Animator *)displayLinkContext;
        [self animate];
    }

    return kCVReturnSuccess;
}


- (void)animate {
    // Animate
}


- (void)performRotate {
    self.currentAngel += kRotationAngle;
    self.coverImageLayer.transform = CATransform3DMakeRotation(self.currentAngel, 0, 0, 1);
}


- (void)awakeFromNib {
    CVDisplayLinkCreateWithActiveCGDisplays(&displayLinkRef);
    CVDisplayLinkSetOutputCallback(displayLinkRef, displayLinkOutputCallback, (__bridge void *)self);
    CVDisplayLinkStart(displayLinkRef);
}


- (void)dealloc {
    CVDisplayLinkStop(displayLinkRef);
    CVDisplayLinkRelease(displayLinkRef);
}