/*
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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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@class ZXQRCodeErrorCorrectionLevel;
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/**
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* Encapsulates a QR Code's format information, including the data mask used and
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* error correction level.
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*/
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@interface ZXQRCodeFormatInformation : NSObject
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@property (nonatomic, strong, readonly) ZXQRCodeErrorCorrectionLevel *errorCorrectionLevel;
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@property (nonatomic, assign, readonly) int8_t dataMask;
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+ (int)numBitsDiffering:(int)a b:(int)b;
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/**
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* @param maskedFormatInfo1 format info indicator, with mask still applied
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* @param maskedFormatInfo2 second copy of same info; both are checked at the same time
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* to establish best match
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* @return information about the format it specifies, or {@code null}
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* if doesn't seem to match any known pattern
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*/
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+ (ZXQRCodeFormatInformation *)decodeFormatInformation:(int)maskedFormatInfo1 maskedFormatInfo2:(int)maskedFormatInfo2;
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@end
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