| // Copyright 2019 The Flutter Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #import <Foundation/Foundation.h> |
| #import <UIKit/UIKit.h> |
| |
| NS_ASSUME_NONNULL_BEGIN |
| |
| typedef enum : NSUInteger { |
| FLTImagePickerMIMETypePNG, |
| FLTImagePickerMIMETypeJPEG, |
| FLTImagePickerMIMETypeGIF, |
| FLTImagePickerMIMETypeOther, |
| } FLTImagePickerMIMEType; |
| |
| extern NSString *const kFLTImagePickerDefaultSuffix; |
| extern const FLTImagePickerMIMEType kFLTImagePickerMIMETypeDefault; |
| |
| @interface FLTImagePickerMetaDataUtil : NSObject |
| |
| // Retrieve MIME type by reading the image data. We currently only support some popular types. |
| + (FLTImagePickerMIMEType)getImageMIMETypeFromImageData:(NSData *)imageData; |
| |
| // Get corresponding surfix from type. |
| + (nullable NSString *)imageTypeSuffixFromType:(FLTImagePickerMIMEType)type; |
| |
| + (NSDictionary *)getMetaDataFromImageData:(NSData *)imageData; |
| |
| + (NSData *)updateMetaData:(NSDictionary *)metaData toImage:(NSData *)imageData; |
| |
| // Converting UIImage to a NSData with the type proveide. |
| // |
| // The quality is for JPEG type only, it defaults to 1. It throws exception if setting a non-nil |
| // quality with type other than FLTImagePickerMIMETypeJPEG. Converting UIImage to |
| // FLTImagePickerMIMETypeGIF or FLTImagePickerMIMETypeTIFF is not supported in iOS. This |
| // method throws exception if trying to do so. |
| + (nonnull NSData *)convertImage:(nonnull UIImage *)image |
| usingType:(FLTImagePickerMIMEType)type |
| quality:(nullable NSNumber *)quality; |
| |
| @end |
| |
| NS_ASSUME_NONNULL_END |
