47 lines
1.3 KiB
Objective-C
47 lines
1.3 KiB
Objective-C
/*
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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 "UIImage+MemoryCacheCost.h"
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#import "objc/runtime.h"
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#import "NSImage+Compatibility.h"
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FOUNDATION_STATIC_INLINE NSUInteger SDMemoryCacheCostForImage(UIImage *image) {
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CGImageRef imageRef = image.CGImage;
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if (!imageRef) {
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return 0;
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}
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NSUInteger bytesPerFrame = CGImageGetBytesPerRow(imageRef) * CGImageGetHeight(imageRef);
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NSUInteger frameCount;
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#if SD_MAC
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frameCount = 1;
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#elif SD_UIKIT || SD_WATCH
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frameCount = image.images.count > 0 ? image.images.count : 1;
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#endif
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NSUInteger cost = bytesPerFrame * frameCount;
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return cost;
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}
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@implementation UIImage (MemoryCacheCost)
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- (NSUInteger)sd_memoryCost {
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NSNumber *value = objc_getAssociatedObject(self, @selector(sd_memoryCost));
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NSUInteger memoryCost;
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if (value != nil) {
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memoryCost = [value unsignedIntegerValue];
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} else {
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memoryCost = SDMemoryCacheCostForImage(self);
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}
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return memoryCost;
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}
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- (void)setSd_memoryCost:(NSUInteger)sd_memoryCost {
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objc_setAssociatedObject(self, @selector(sd_memoryCost), @(sd_memoryCost), OBJC_ASSOCIATION_RETAIN_NONATOMIC);
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}
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@end
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