org.jmrtd.lds
Class DG4File

java.lang.Object
  org.jmrtd.lds.PassportFile
      org.jmrtd.lds.DataGroup
          org.jmrtd.lds.DG4File

public class DG4File
extends DataGroup

File structure for the EF_DG4 file. Based on ISO/IEC FCD 19794-6 (Biometric Data Interchange Formats. Part 6: Iris Image Data) aka Annex E.

Version:

$Revision: 1278 $

Author:

Martijn Oostdijk (martijn.oostdijk@gmail.com)

Field Summary

protected List<byte[]>

templates

Fields inherited from class org.jmrtd.lds.PassportFile

EF_COM_TAG, EF_DG1_TAG, EF_DG10_TAG, EF_DG11_TAG, EF_DG12_TAG, EF_DG13_TAG, EF_DG14_TAG, EF_DG15_TAG, EF_DG16_TAG, EF_DG2_TAG, EF_DG3_TAG, EF_DG4_TAG, EF_DG5_TAG, EF_DG6_TAG, EF_DG7_TAG, EF_DG8_TAG, EF_DG9_TAG, EF_SOD_TAG

Constructor Summary

DG4File(InputStream in)
Constructs a new file based on an input stream.

Method Summary

byte[]	getEncoded() Gets the contents of this file as byte array, includes the ICAO tag and length.
List<IrisInfo>	getIrisInfos()
int	getTag() The data group tag.
protected void	readBiometricData(InputStream in, int valueLength) Reads biometric data block.
String	toString() Gets a textual representation of this file.

Methods inherited from class org.jmrtd.lds.DataGroup

getLength

Methods inherited from class org.jmrtd.lds.PassportFile

createPassportFile, lookupDataGroupNumberByTag, lookupFIDByDataGroupNumber, lookupFIDByTag, lookupTagByDataGroupNumber, lookupTagByFID, toString

Methods inherited from class java.lang.Object

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

Field Detail

templates

protected List<byte[]> templates

Constructor Detail

DG4File

public DG4File(InputStream in)

Constructs a new file based on an input stream.

Parameters:

in - an input stream

Method Detail

getEncoded

public byte[] getEncoded()

Description copied from class: PassportFile

Gets the contents of this file as byte array, includes the ICAO tag and length.

Returns:

a byte array containing the file

getIrisInfos

public List<IrisInfo> getIrisInfos()

getTag

public int getTag()

Description copied from class: DataGroup

The data group tag.

Overrides:

getTag in class DataGroup

Returns:

the tag of the data group

toString

public String toString()

Gets a textual representation of this file.

Returns:

a textual representation of this file

readBiometricData

protected void readBiometricData(InputStream in,
                                 int valueLength)
                          throws IOException

Reads biometric data block. Based on ISO/IEC FCD 19794-4 aka Annex F. TODO: work in progress... -- MO

Parameters:

in - the input stream positioned so that biometric data block tag and length are already read

valueLength - the length

Throws:

IOException - if reading fails