Package com.mcgath.jhove.module.png

Class BkgdChunk

java.lang.Object

com.mcgath.jhove.module.png.PNGChunk

com.mcgath.jhove.module.png.BkgdChunk

public class BkgdChunk
extends PNGChunk

The bKGD (background color) chunk

Field Summary

Fields inherited from class com.mcgath.jhove.module.png.PNGChunk

_dstream, _module, _nisoMetadata, _propList, ancillary, bKGD_HEAD_SIG, cHRM_HEAD_SIG, chunkData, chunkType, crc, duplicateAllowed, gAMA_HEAD_SIG, hIST_HEAD_SIG, iCCP_HEAD_SIG, IDAT_HEAD_SIG, IEND_HEAD_SIG, IHDR_HEAD_SIG, iTXt_HEAD_SIG, length, pHYs_HEAD_SIG, PLTE_HEAD_SIG, sBIT_HEAD_SIG, sPLT_HEAD_SIG, sRGB_HEAD_SIG, tEXt_HEAD_SIG, tIME_HEAD_SIG, tRNS_HEAD_SIG, zTXt_HEAD_SIG

Constructor Summary

Constructors

Constructor	Description
BkgdChunk(int sig, long leng)	Constructor

Method Summary

Modifier and Type	Method	Description
void	processChunk(RepInfo info)	Process the data in the chunk.

Methods inherited from class com.mcgath.jhove.module.png.PNGChunk

chunkTypeString, getChunkData, getChunkType, getCRC, getLength, makePNGChunk, processChunkCommon, readCRC, readUnsignedByte, readUnsignedInt, readUnsignedShort, setInputStream, setModule, setNisoMetadata, setPropertyList, skipBytes

Methods inherited from class java.lang.Object

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

Constructor Details

BkgdChunk

public BkgdChunk(int sig,
 long leng)

Constructor

Parameters:

sig - : the chunktype

leng - : the length

Method Details

processChunk

public void processChunk(RepInfo info)
                  throws Exception

Process the data in the chunk. All we do is note the presence of the chunk in a property. The greyscale, RGB, and palette backgrounds are all different kinds of data, so make them three different properties so that processing software doesn't get confused.

Overrides:

processChunk in class PNGChunk

Parameters:

info - : RepInfo object

Throws:

Exception