Class DataBlock
java.lang.Object
com.google.zxing.datamatrix.decoder.DataBlock
Encapsulates a block of data within a Data Matrix Code. Data Matrix Codes may split their data into multiple blocks, each of which is a unit of data and error-correction codewords. Each is represented by an instance of this class.
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Field Summary
FieldsModifier and TypeFieldDescriptionprivate final byte[]
private final int
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Constructor Summary
Constructors -
Method Summary
Modifier and TypeMethodDescription(package private) byte[]
(package private) static DataBlock[]
getDataBlocks
(byte[] rawCodewords, Version version) When Data Matrix Codes use multiple data blocks, they actually interleave the bytes of each of them.(package private) int
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Field Details
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numDataCodewords
private final int numDataCodewords -
codewords
private final byte[] codewords
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Constructor Details
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DataBlock
private DataBlock(int numDataCodewords, byte[] codewords)
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Method Details
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getDataBlocks
When Data Matrix Codes use multiple data blocks, they actually interleave the bytes of each of them. That is, the first byte of data block 1 to n is written, then the second bytes, and so on. This method will separate the data into original blocks.
- Parameters:
rawCodewords
- bytes as read directly from the Data Matrix Codeversion
- version of the Data Matrix Code- Returns:
- DataBlocks containing original bytes, "de-interleaved" from representation in the Data Matrix Code
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getNumDataCodewords
int getNumDataCodewords() -
getCodewords
byte[] getCodewords()
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