/*
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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 "SDAnimatedImageRep.h"
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#if SD_MAC
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#import "SDWebImageGIFCoder.h"
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@interface SDWebImageGIFCoder ()
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- (float)sd_frameDurationAtIndex:(NSUInteger)index source:(CGImageSourceRef)source;
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@end
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@interface SDAnimatedImageRep ()
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@property (nonatomic, assign, readonly, nullable) CGImageSourceRef imageSource;
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@end
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@implementation SDAnimatedImageRep
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// `NSBitmapImageRep` will use `kCGImagePropertyGIFDelayTime` whenever you call `setProperty:withValue:` with `NSImageCurrentFrame` to change the current frame. We override it and use the actual `kCGImagePropertyGIFUnclampedDelayTime` if need.
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- (void)setProperty:(NSBitmapImageRepPropertyKey)property withValue:(id)value {
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[super setProperty:property withValue:value];
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if ([property isEqualToString:NSImageCurrentFrame]) {
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// Access the image source
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CGImageSourceRef imageSource = self.imageSource;
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if (!imageSource) {
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return;
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}
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// Check format type
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CFStringRef type = CGImageSourceGetType(imageSource);
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if (!type) {
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return;
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}
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NSUInteger index = [value unsignedIntegerValue];
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float frameDuration = 0;
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// Through we currently process GIF only, in the 5.x we support APNG so we keep the extensibility
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if (CFStringCompare(type, kUTTypeGIF, 0) == kCFCompareEqualTo) {
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frameDuration = [[SDWebImageGIFCoder sharedCoder] sd_frameDurationAtIndex:index source:imageSource];
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}
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if (!frameDuration) {
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return;
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}
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// Reset super frame duration with the actual frame duration
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[super setProperty:NSImageCurrentFrameDuration withValue:@(frameDuration)];
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}
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}
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- (CGImageSourceRef)imageSource {
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if (_tiffData) {
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return (__bridge CGImageSourceRef)(_tiffData);
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}
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return NULL;
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}
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@end
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#endif
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