Package com.google.zxing.datamatrix

Class DataMatrixReader

java.lang.Object

com.google.zxing.datamatrix.DataMatrixReader

All Implemented Interfaces:

Reader

public final class DataMatrixReader
extends Object
implements Reader

This implementation can detect and decode Data Matrix codes in an image.

Author:

bbrown@google.com (Brian Brown)

Constructor Summary

Constructors

Constructor	Description
DataMatrixReader()

Method Summary

Modifier and Type	Method	Description
Result	decode(BinaryBitmap image)	Locates and decodes a Data Matrix code in an image.
Result	decode(BinaryBitmap image, Map<DecodeHintType,?> hints)	Locates and decodes a barcode in some format within an image.
void	reset()	Resets any internal state the implementation has after a decode, to prepare it for reuse.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

DataMatrixReader

public DataMatrixReader()

Method Details

decode

public Result decode(BinaryBitmap image)
              throws NotFoundException,
ChecksumException,
FormatException

Locates and decodes a Data Matrix code in an image.

Specified by:

decode in interface Reader

Parameters:

image - image of barcode to decode

Returns:

a String representing the content encoded by the Data Matrix code

Throws:

NotFoundException - if a Data Matrix code cannot be found

FormatException - if a Data Matrix code cannot be decoded

ChecksumException - if error correction fails

decode

public Result decode(BinaryBitmap image,
 Map<DecodeHintType,?> hints)
              throws NotFoundException,
ChecksumException,
FormatException

Description copied from interface: Reader

Locates and decodes a barcode in some format within an image. This method also accepts hints, each possibly associated to some data, which may help the implementation decode.

Specified by:

decode in interface Reader

Parameters:

image - image of barcode to decode

hints - passed as a Map from DecodeHintType to arbitrary data. The meaning of the data depends upon the hint type. The implementation may or may not do anything with these hints.

Returns:

String which the barcode encodes

Throws:

NotFoundException - if no potential barcode is found

ChecksumException - if a potential barcode is found but does not pass its checksum

FormatException - if a potential barcode is found but format is invalid

reset

public void reset()

Description copied from interface: Reader

Resets any internal state the implementation has after a decode, to prepare it for reuse.

Specified by:

reset in interface Reader