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38 lines
1.5 KiB
Objective-C
38 lines
1.5 KiB
Objective-C
#ifndef DctImageTransform_h
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#define DctImageTransform_h
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#import <Foundation/Foundation.h>
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#import <ImageDCT/YuvConversion.h>
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typedef NS_ENUM(NSUInteger, ImageDCTTableType) {
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ImageDCTTableTypeLuma,
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ImageDCTTableTypeChroma,
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ImageDCTTableTypeDelta
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};
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@interface ImageDCTTable : NSObject
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- (instancetype _Nonnull)initWithQuality:(NSInteger)quality type:(ImageDCTTableType)type;
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- (instancetype _Nullable)initWithData:(NSData * _Nonnull)data;
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- (NSData * _Nonnull)serializedData;
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@end
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@interface ImageDCT : NSObject
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- (instancetype _Nonnull)initWithTable:(ImageDCTTable * _Nonnull)table;
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- (void)forwardWithPixels:(uint8_t const * _Nonnull)pixels coefficients:(int16_t * _Nonnull)coefficients width:(NSInteger)width height:(NSInteger)height bytesPerRow:(NSInteger)bytesPerRow __attribute__((objc_direct));
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- (void)inverseWithCoefficients:(int16_t const * _Nonnull)coefficients pixels:(uint8_t * _Nonnull)pixels width:(NSInteger)width height:(NSInteger)height coefficientsPerRow:(NSInteger)coefficientsPerRow bytesPerRow:(NSInteger)bytesPerRow __attribute__((objc_direct));
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#if defined(__aarch64__)
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- (void)forward4x4:(int16_t const * _Nonnull)normalizedCoefficients coefficients:(int16_t * _Nonnull)coefficients width:(NSInteger)width height:(NSInteger)height __attribute__((objc_direct));
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- (void)inverse4x4Add:(int16_t const * _Nonnull)coefficients normalizedCoefficients:(int16_t * _Nonnull)normalizedCoefficients width:(NSInteger)width height:(NSInteger)height __attribute__((objc_direct));
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#endif
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@end
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#endif /* DctImageTransform_h */
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