97 lines
3.0 KiB
Objective-C
97 lines
3.0 KiB
Objective-C
/*
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* Copyright 2012 ZXing authors
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#import "ZXBarcodeFormat.h"
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@protocol ZXResultPointCallback;
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@class ZXIntArray;
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/**
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* Encapsulates hints that a caller may pass to a barcode reader to help it
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* more quickly or accurately decode it. It is up to implementations to decide what,
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* if anything, to do with the information that is supplied.
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*/
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@interface ZXDecodeHints : NSObject <NSCopying>
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+ (id)hints;
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/**
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* Assume Code 39 codes employ a check digit.
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*/
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@property (nonatomic, assign) BOOL assumeCode39CheckDigit;
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/**
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* Assume the barcode is being processed as a GS1 barcode, and modify behavior as needed.
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* For example this affects FNC1 handling for Code 128 (aka GS1-128).
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*/
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@property (nonatomic, assign) BOOL assumeGS1;
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/**
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* Allowed lengths of encoded data -- reject anything else.
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*/
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@property (nonatomic, strong) NSArray *allowedLengths;
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/**
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* Specifies what character encoding to use when decoding, where applicable (type String)
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*/
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@property (nonatomic, assign) NSStringEncoding encoding;
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/**
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* Unspecified, application-specific hint.
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*/
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@property (nonatomic, strong) id other;
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/**
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* Image is a pure monochrome image of a barcode.
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*/
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@property (nonatomic, assign) BOOL pureBarcode;
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/**
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* If true, return the start and end digits in a Codabar barcode instead of stripping them. They
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* are alpha, whereas the rest are numeric. By default, they are stripped, but this causes them
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* to not be.
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*/
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@property (nonatomic, assign) BOOL returnCodaBarStartEnd;
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/**
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* The caller needs to be notified via callback when a possible ZXResultPoint
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* is found.
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*/
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@property (nonatomic, strong) id <ZXResultPointCallback> resultPointCallback;
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/**
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* Spend more time to try to find a barcode; optimize for accuracy, not speed.
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*/
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@property (nonatomic, assign) BOOL tryHarder;
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/**
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* Allowed extension lengths for EAN or UPC barcodes. Other formats will ignore this.
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* Maps to an ZXIntArray of the allowed extension lengths, for example [2], [5], or [2, 5].
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* If it is optional to have an extension, do not set this hint. If this is set,
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* and a UPC or EAN barcode is found but an extension is not, then no result will be returned
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* at all.
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*/
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@property (nonatomic, strong) ZXIntArray *allowedEANExtensions;
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/**
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* Image is known to be of one of a few possible formats.
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*/
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- (void)addPossibleFormat:(ZXBarcodeFormat)format;
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- (BOOL)containsFormat:(ZXBarcodeFormat)format;
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- (int)numberOfPossibleFormats;
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- (void)removePossibleFormat:(ZXBarcodeFormat)format;
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@end |