#import "SDImageAPNGCoder.h"
#import "SDImageIOAnimatedCoderInternal.h"
#if SD_MAC
#import <CoreServices/CoreServices.h>
#else
#import <MobileCoreServices/MobileCoreServices.h>
#endif

@implementation SDImageAPNGCoder

+ (instancetype)sharedCoder {
    static SDImageAPNGCoder *coder;
    static dispatch_once_t onceToken;
    dispatch_once(&onceToken, ^{
        coder = [[SDImageAPNGCoder alloc] init];
    });
    return coder;
}



+ (SDImageFormat)imageFormat {
    return SDImageFormatPNG;
}

+ (NSString *)imageUTType {
    return (__bridge NSString *)kSDUTTypePNG;
}

+ (NSString *)dictionaryProperty {
    return (__bridge NSString *)kCGImagePropertyPNGDictionary;
}

+ (NSString *)unclampedDelayTimeProperty {
    return (__bridge NSString *)kCGImagePropertyAPNGUnclampedDelayTime;
}

+ (NSString *)delayTimeProperty {
    return (__bridge NSString *)kCGImagePropertyAPNGDelayTime;
}

+ (NSString *)loopCountProperty {
    return (__bridge NSString *)kCGImagePropertyAPNGLoopCount;
}

+ (NSUInteger)defaultLoopCount {
    return 0;
}

@end