session-ios/SignalServiceKit/src/Util/NSData+Image.h
2019-01-23 13:12:43 -05:00

25 lines
698 B
Objective-C

//
// Copyright (c) 2019 Open Whisper Systems. All rights reserved.
//
NS_ASSUME_NONNULL_BEGIN
@interface NSData (Image)
// If mimeType is non-nil, we ensure that the magic numbers agree with the
// mimeType.
+ (BOOL)ows_isValidImageAtPath:(NSString *)filePath;
+ (BOOL)ows_isValidImageAtPath:(NSString *)filePath mimeType:(nullable NSString *)mimeType;
- (BOOL)ows_isValidImage;
- (BOOL)ows_isValidImageWithMimeType:(nullable NSString *)mimeType;
// Returns the image size in pixels.
//
// Returns CGSizeZero on error.
+ (CGSize)imageSizeForFilePath:(NSString *)filePath mimeType:(NSString *)mimeType;
+ (BOOL)hasAlphaForValidImageFilePath:(NSString *)filePath;
@end
NS_ASSUME_NONNULL_END