69 lines
2.6 KiB
Objective-C
69 lines
2.6 KiB
Objective-C
//
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// WebPImageCoder.h
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// WebPImage <https://github.com/ibireme/WebPImage>
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//
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// Created by ibireme on 15/5/13.
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// Copyright (c) 2015 ibireme.
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//
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// This source code is licensed under the MIT-style license found in the
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// LICENSE file in the root directory of this source tree.
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//
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#import <Cocoa/Cocoa.h>
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NS_ASSUME_NONNULL_BEGIN
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typedef NS_ENUM(NSUInteger, WebPImageType) {
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WebPImageTypeUnknown = 0, ///< unknown
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WebPImageTypeWebP
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};
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typedef NS_ENUM(NSUInteger, WebPImageDisposeMethod) {
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WebPImageDisposeNone = 0,
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WebPImageDisposeBackground,
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WebPImageDisposePrevious,
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};
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typedef NS_ENUM(NSUInteger, WebPImageBlendOperation) {
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WebPImageBlendNone = 0,
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WebPImageBlendOver,
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};
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@interface WebPImageFrame : NSObject <NSCopying>
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@property (nonatomic) NSUInteger index; ///< Frame index (zero based)
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@property (nonatomic) NSUInteger width; ///< Frame width
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@property (nonatomic) NSUInteger height; ///< Frame height
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@property (nonatomic) NSUInteger offsetX; ///< Frame origin.x in canvas (left-bottom based)
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@property (nonatomic) NSUInteger offsetY; ///< Frame origin.y in canvas (left-bottom based)
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@property (nonatomic) NSTimeInterval duration; ///< Frame duration in seconds
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@property (nonatomic) WebPImageDisposeMethod dispose; ///< Frame dispose method.
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@property (nonatomic) WebPImageBlendOperation blend; ///< Frame blend operation.
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@property (nullable, nonatomic, strong) NSImage *image; ///< The image.
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@end
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@interface WebPImageDecoder : NSObject
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@property (nullable, nonatomic, readonly) NSData *data; ///< Image data.
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@property (nonatomic, readonly) WebPImageType type; ///< Image data type.
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@property (nonatomic, readonly) CGFloat scale; ///< Image scale.
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@property (nonatomic, readonly) NSUInteger frameCount; ///< Image frame count.
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@property (nonatomic, readonly) NSUInteger loopCount; ///< Image loop count, 0 means infinite.
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@property (nonatomic, readonly) NSUInteger width; ///< Image canvas width.
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@property (nonatomic, readonly) NSUInteger height; ///< Image canvas height.
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@property (nonatomic, readonly, getter=isFinalized) BOOL finalized;
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- (instancetype)initWithScale:(CGFloat)scale NS_DESIGNATED_INITIALIZER;
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- (BOOL)updateData:(nullable NSData *)data final:(BOOL)final;
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+ (nullable instancetype)decoderWithData:(NSData *)data scale:(CGFloat)scale;
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- (nullable WebPImageFrame *)frameAtIndex:(NSUInteger)index decodeForDisplay:(BOOL)decodeForDisplay;
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- (NSTimeInterval)frameDurationAtIndex:(NSUInteger)index;
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@end
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CG_EXTERN CGImageRef _Nullable WebPCGImageCreateDecodedCopy(CGImageRef imageRef, BOOL decodeForDisplay);
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NS_ASSUME_NONNULL_END
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