/*
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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 "SDImageAWebPCoder.h"
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#import "SDImageIOAnimatedCoderInternal.h"
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// These constants are available from iOS 14+ and Xcode 12. This raw value is used for toolchain and firmware compatibility
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static NSString * kSDCGImagePropertyWebPDictionary = @"{WebP}";
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static NSString * kSDCGImagePropertyWebPLoopCount = @"LoopCount";
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static NSString * kSDCGImagePropertyWebPDelayTime = @"DelayTime";
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static NSString * kSDCGImagePropertyWebPUnclampedDelayTime = @"UnclampedDelayTime";
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@implementation SDImageAWebPCoder
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+ (void)initialize {
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#if __IPHONE_14_0 || __TVOS_14_0 || __MAC_11_0 || __WATCHOS_7_0
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// Xcode 12
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if (@available(iOS 14, tvOS 14, macOS 11, watchOS 7, *)) {
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// Use SDK instead of raw value
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kSDCGImagePropertyWebPDictionary = (__bridge NSString *)kCGImagePropertyWebPDictionary;
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kSDCGImagePropertyWebPLoopCount = (__bridge NSString *)kCGImagePropertyWebPLoopCount;
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kSDCGImagePropertyWebPDelayTime = (__bridge NSString *)kCGImagePropertyWebPDelayTime;
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kSDCGImagePropertyWebPUnclampedDelayTime = (__bridge NSString *)kCGImagePropertyWebPUnclampedDelayTime;
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}
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#endif
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}
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+ (instancetype)sharedCoder {
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static SDImageAWebPCoder *coder;
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static dispatch_once_t onceToken;
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dispatch_once(&onceToken, ^{
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coder = [[SDImageAWebPCoder alloc] init];
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});
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return coder;
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}
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#pragma mark - SDImageCoder
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- (BOOL)canDecodeFromData:(nullable NSData *)data {
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switch ([NSData sd_imageFormatForImageData:data]) {
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case SDImageFormatWebP:
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// Check WebP decoding compatibility
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return [self.class canDecodeFromFormat:SDImageFormatWebP];
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default:
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return NO;
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}
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}
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- (BOOL)canIncrementalDecodeFromData:(NSData *)data {
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return [self canDecodeFromData:data];
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}
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- (BOOL)canEncodeToFormat:(SDImageFormat)format {
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switch (format) {
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case SDImageFormatWebP:
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// Check WebP encoding compatibility
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return [self.class canEncodeToFormat:SDImageFormatWebP];
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default:
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return NO;
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}
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}
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#pragma mark - Subclass Override
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+ (SDImageFormat)imageFormat {
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return SDImageFormatWebP;
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}
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+ (NSString *)imageUTType {
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return (__bridge NSString *)kSDUTTypeWebP;
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}
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+ (NSString *)dictionaryProperty {
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return kSDCGImagePropertyWebPDictionary;
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}
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+ (NSString *)unclampedDelayTimeProperty {
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return kSDCGImagePropertyWebPUnclampedDelayTime;
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}
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+ (NSString *)delayTimeProperty {
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return kSDCGImagePropertyWebPDelayTime;
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}
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+ (NSString *)loopCountProperty {
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return kSDCGImagePropertyWebPLoopCount;
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}
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+ (NSUInteger)defaultLoopCount {
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return 0;
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}
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@end
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