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com.flexstor.flexdbserver.services.asset.iptc
Class PSDParser  

java.lang.Object
  com.flexstor.flexdbserver.services.asset.iptc.IPTCParser
      com.flexstor.flexdbserver.services.asset.iptc.PSDParser

All Implemented Interfaces:

IIPTCParser

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public class PSDParser

extends IPTCParser

implements IIPTCParser

The PSDParser is used to parse header information for an Adobe Photoshop Document (PSD File).

Version:

initial

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Field Summary
private  byte[]	abImageResourceSection           This is an array of bytes which consists of the entire Image Resource Section (i.e.
private  com.flexstor.common.io.xfile.FlexXRandomAccessFile	fPSDFile           The file we will parse.
private  java.util.Hashtable	hImageResourceBlockHash           I think the Image Resource Block data would go nicely in a Hashtable because there may be more than one Image Resource Block in a file and we would really only care about the 2-byte ID and the N-byte Resource Data (where N is always an even number)
private  int	nBitsPerChannel           The number of bits per channel.
private  int	nChannels           The number of channels in the image, including any alpha channels.
private  int	nColorMode           The color mode of the file.
private  int	nColorModeDataLength           The length of the color data.
private  int	nColumns           The width of the image in pixels.
private  int	nImageResourcesLength           nImageResourcesLength is the total length of all Image Resource Blocks.
private  int	nRows           The height of the image in pixels.
private  java.lang.String	sSignature           The "signature" of a PSD file is always equal to "8BPS" The format of a Photoshop file is described in a document titled "Photoshop File Formats.pdf" and is available on the Adobe site.

 

Fields inherited from class com.flexstor.flexdbserver.services.asset.iptc.IPTCParser

hDataSets

 

Constructor Summary

PSDParser(com.flexstor.common.io.xfile.FlexXFile fInputFile)           Creates new PSDParser from the File parameter passed in.

 

Method Summary
protected  void	closeFile()
int	getBitsPerChannel()           Obtain the number of bits per channel.
int	getColorMode()           Obtain the color mode of the file.
java.lang.String	getDatasetValue(java.lang.String sDatasetID)           Obtain the value for the specified Dataset number.
int	getHeight()           Obtain the height of the image.
byte[]	getImageResource(int nResourceID)           Obtain a specific Image Resource Data Block of the file.
byte[]	getIPTCNAArecord()           Obtain the IPTC-NAA Record of the file.
int	getNumberOfChannels()           Obtain the number of channels in the image.
int	getWidth()           Obtain the width of the image.
boolean	parseFile()           Parse a PSD (Photoshop) file.
private  boolean	parseImageResourceBlocks()           This method parses the entire Image Resource Section byte array into separate Image Resource Blocks and places them in the hIRBhashtable.

 

Methods inherited from class com.flexstor.flexdbserver.services.asset.iptc.IPTCParser

BGPDebug, BGPError, hexBytesToInt, parseIPTCdata

 

Methods inherited from class java.lang.Object

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

 

Field Detail

fPSDFile

private com.flexstor.common.io.xfile.FlexXRandomAccessFile fPSDFile

The file we will parse. It is a RandomAccessFile so we can skip unimportant parts of the file.

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sSignature

private java.lang.String sSignature

The "signature" of a PSD file is always equal to "8BPS" The format of a Photoshop file is described in a document titled "Photoshop File Formats.pdf" and is available on the Adobe site.

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nChannels

private int nChannels

The number of channels in the image, including any alpha channels. Supported range is 1 to 24.

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nRows

private int nRows

The height of the image in pixels. Supported range is 1 to 30,000.

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nColumns

private int nColumns

The width of the image in pixels. Supported range is 1 to 30,000.

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nBitsPerChannel

private int nBitsPerChannel

The number of bits per channel. Supported values are 1, 8, and 16.

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nColorMode

private int nColorMode

The color mode of the file. Supported values are: Bitmap=0; Grayscale=1; Indexed=2; RGB=3; CMYK=4; Multichannel=7; Duotone=8; Lab=9.

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nColorModeDataLength

private int nColorModeDataLength

The length of the color data. Only indexed color and duotone have color mode data. For all other modes, this will be just four bytes of 0.

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nImageResourcesLength

private int nImageResourcesLength

nImageResourcesLength is the total length of all Image Resource Blocks.

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abImageResourceSection

private byte[] abImageResourceSection

This is an array of bytes which consists of the entire Image Resource Section (i.e. several individual Image Resource Blocks)

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hImageResourceBlockHash

private java.util.Hashtable hImageResourceBlockHash

I think the Image Resource Block data would go nicely in a Hashtable because there may be more than one Image Resource Block in a file and we would really only care about the 2-byte ID and the N-byte Resource Data (where N is always an even number)

Constructor Detail

PSDParser

public PSDParser(com.flexstor.common.io.xfile.FlexXFile fInputFile)

Creates new PSDParser from the File parameter passed in.

Method Detail

parseFile

public boolean parseFile()

Parse a PSD (Photoshop) file. In order to return true, the file must have a valid PSD file from which we can retrieve IPTC-NAA info. This may or may not parse the IPTC-NAA data as well. (Right now I'm leaning towards doing it.)

Specified by:

parseFile in interface IIPTCParser

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closeFile

protected void closeFile()

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parseImageResourceBlocks

private boolean parseImageResourceBlocks()

This method parses the entire Image Resource Section byte array into separate Image Resource Blocks and places them in the hIRBhashtable.

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getNumberOfChannels

public int getNumberOfChannels()

Obtain the number of channels in the image.

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getHeight

public int getHeight()

Obtain the height of the image.

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getWidth

public int getWidth()

Obtain the width of the image.

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getBitsPerChannel

public int getBitsPerChannel()

Obtain the number of bits per channel. Should be either 1, 8, or 16.

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getColorMode

public int getColorMode()

Obtain the color mode of the file.

Value should be one of the following:
   0 is Bitmap
   1 is Grayscale
   2 is Indexed
   3 is RGB
   4 is CMYK
   7 is Multichannel
   8 is Duotone
   9 is Lab

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getImageResource

public byte[] getImageResource(int nResourceID)

Obtain a specific Image Resource Data Block of the file.

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getIPTCNAArecord

public byte[] getIPTCNAArecord()

Obtain the IPTC-NAA Record of the file.

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getDatasetValue

public java.lang.String getDatasetValue(java.lang.String sDatasetID)

Obtain the value for the specified Dataset number.

Specified by:

getDatasetValue in interface IIPTCParser

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