/*
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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 ZXByteArray, ZXDataMatrixVersion;
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/**
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* Encapsulates a block of data within a Data Matrix Code. Data Matrix Codes may split their data into
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* multiple blocks, each of which is a unit of data and error-correction codewords. Each
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* is represented by an instance of this class.
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*/
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@interface ZXDataMatrixDataBlock : NSObject
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@property (nonatomic, assign, readonly) int numDataCodewords;
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@property (nonatomic, strong, readonly) ZXByteArray *codewords;
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/**
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* When Data Matrix Codes use multiple data blocks, they actually interleave the bytes of each of them.
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* That is, the first byte of data block 1 to n is written, then the second bytes, and so on. This
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* method will separate the data into original blocks.
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*
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* @param rawCodewords bytes as read directly from the Data Matrix Code
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* @param version version of the Data Matrix Code
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* @return DataBlocks containing original bytes, "de-interleaved" from representation in the
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* Data Matrix Code
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*/
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+ (NSArray *)dataBlocks:(ZXByteArray *)rawCodewords version:(ZXDataMatrixVersion *)version;
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@end
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