in iOS/WAStickersThirdParty/YYImageCoder.m [1142:1154]
CFStringRef YYImageTypeToUTType(YYImageType type) {
switch (type) {
case YYImageTypeJPEG: return kUTTypeJPEG;
case YYImageTypeJPEG2000: return kUTTypeJPEG2000;
case YYImageTypeTIFF: return kUTTypeTIFF;
case YYImageTypeBMP: return kUTTypeBMP;
case YYImageTypeICO: return kUTTypeICO;
case YYImageTypeICNS: return kUTTypeAppleICNS;
case YYImageTypeGIF: return kUTTypeGIF;
case YYImageTypePNG: return kUTTypePNG;
default: return NULL;
}
}