com.google.zxing.qrcode.decoder
Class Decoder

java.lang.Object
  com.google.zxing.qrcode.decoder.Decoder

public final class Decoder
extends Object

The main class which implements QR Code decoding -- as opposed to locating and extracting the QR Code from an image.

Since:

BlackBerry API 6.0.0

Constructor Summary

Decoder()

Method Summary
DecoderResult	decode(boolean[][] image)
DecoderResult	decode(boolean[][] image, Hashtable hints) Convenience method that can decode a QR Code represented as a 2D array of booleans.
DecoderResult	decode(BitMatrix bits)
DecoderResult	decode(BitMatrix bits, Hashtable hints) Decodes a QR Code represented as a BitMatrix.

Methods inherited from class java.lang.Object

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

Constructor Detail

Decoder

public Decoder()

Since:

BlackBerry API 6.0.0

Method Detail

decode

public DecoderResult decode(boolean[][] image)
                     throws ChecksumException,
                            FormatException,
                            NotFoundException

Throws:

ChecksumException

FormatException

NotFoundException

Since:

BlackBerry API 6.0.0

decode

public DecoderResult decode(boolean[][] image,
                            Hashtable hints)
                     throws ChecksumException,
                            FormatException

Convenience method that can decode a QR Code represented as a 2D array of booleans. "true" is taken to mean a black module.

Parameters:

image - booleans representing white/black QR Code modules

Returns:

text and bytes encoded within the QR Code

Throws:

FormatException - if the QR Code cannot be decoded

ChecksumException - if error correction fails

Since:

BlackBerry API 7.0.0

decode

public DecoderResult decode(BitMatrix bits)
                     throws ChecksumException,
                            FormatException

Throws:

ChecksumException

FormatException

Since:

BlackBerry API 6.0.0

decode

public DecoderResult decode(BitMatrix bits,
                            Hashtable hints)
                     throws FormatException,
                            ChecksumException

Decodes a QR Code represented as a BitMatrix. A 1 or "true" is taken to mean a black module.

Parameters:

bits - booleans representing white/black QR Code modules

Returns:

text and bytes encoded within the QR Code

Throws:

FormatException - if the QR Code cannot be decoded

ChecksumException - if error correction fails

Since:

BlackBerry API 7.0.0