com.google.zxing.oned
Class UPCAReader

java.lang.Object
  extended by com.google.zxing.oned.UPCAReader
All Implemented Interfaces:
OneDReader, UPCEANReader, Reader

public final class UPCAReader
extends Object
implements UPCEANReader

Implements decoding of the UPC-A format.

Since:
BlackBerry API 6.0.0

Constructor Summary
UPCAReader()
           
 
Method Summary
 Result decode(BinaryBitmap image)
          Locates and decodes a barcode in some format within an image.
 Result decode(BinaryBitmap image, Hashtable hints)
          Locates and decodes a barcode in some format within an image.
 Result decodeRow(int rowNumber, BitArray row, int[] startGuardRange)
          Like OneDReader.decodeRow(int, BitArray, java.util.Hashtable), but allows caller to inform method about where the UPC/EAN start pattern is found.
 Result decodeRow(int rowNumber, BitArray row, Hashtable hints)
          Attempts to decode a one-dimensional barcode format given a single row of an image.
 
Methods inherited from class java.lang.Object
equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 



Constructor Detail

UPCAReader

public UPCAReader()
Since:
BlackBerry API 6.0.0


Method Detail

decodeRow

public Result decodeRow(int rowNumber,
                        BitArray row,
                        int[] startGuardRange)
                 throws ReaderException
Description copied from interface: UPCEANReader

Like OneDReader.decodeRow(int, BitArray, java.util.Hashtable), but allows caller to inform method about where the UPC/EAN start pattern is found. This allows this to be computed once and reused across many implementations.

Specified by:
decodeRow in interface UPCEANReader
Throws:
ReaderException
Since:
BlackBerry API 6.0.0

decodeRow

public Result decodeRow(int rowNumber,
                        BitArray row,
                        Hashtable hints)
                 throws ReaderException
Description copied from interface: OneDReader

Attempts to decode a one-dimensional barcode format given a single row of an image.

Specified by:
decodeRow in interface OneDReader
Parameters:
rowNumber - row number from top of the row
row - the black/white pixel data of the row
hints - decode hints
Returns:
Result containing encoded string and start/end of barcode
Throws:
ReaderException - if an error occurs or barcode cannot be found
Since:
BlackBerry API 6.0.0

decode

public Result decode(BinaryBitmap image)
              throws ReaderException
Description copied from interface: Reader
Locates and decodes a barcode in some format within an image.

Specified by:
decode in interface Reader
Parameters:
image - image of barcode to decode
Returns:
String which the barcode encodes
Throws:
ReaderException - if the barcode cannot be located or decoded for any reason
Since:
BlackBerry API 6.0.0

decode

public Result decode(BinaryBitmap image,
                     Hashtable hints)
              throws ReaderException
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 Hashtable 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:
ReaderException - if the barcode cannot be located or decoded for any reason
Since:
BlackBerry API 6.0.0





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