it.geosolutions.imageioimpl.plugins.tiff
Class TIFFLZWDecompressor

Object
  extended by TIFFDecompressor
      extended by TIFFLZWDecompressor

public class TIFFLZWDecompressor
extends TIFFDecompressor


Field Summary
 
Fields inherited from class TIFFDecompressor
activeSrcHeight, activeSrcMinX, activeSrcMinY, activeSrcWidth, bitsPerSample, byteCount, colorConverter, colorMap, compression, destinationBands, dstHeight, dstMinX, dstMinY, dstWidth, dstXOffset, dstYOffset, extraSamples, image, metadata, offset, photometricInterpretation, planar, rawImage, reader, sampleFormat, samplesPerPixel, sourceBands, sourceXOffset, sourceYOffset, srcHeight, srcMinX, srcMinY, srcWidth, stream, subsampleX, subsampleY
 
Constructor Summary
TIFFLZWDecompressor(int predictor)
           
 
Method Summary
 void addStringToTable(byte[] string)
          Add a new string to the string table.
 void addStringToTable(byte[] oldString, byte newString)
          Add a new string to the string table.
 byte[] composeString(byte[] oldString, byte newString)
          Append newString to the end of oldString.
 int decode(byte[] sdata, int srcOffset, byte[] ddata, int dstOffset)
           
 void decodeRaw(byte[] b, int dstOffset, int bitsPerPixel, int scanlineStride)
          Decodes the source data into the provided byte array b, starting at the offset given by dstOffset.
 int getNextCode()
           
 void initializeStringTable()
          Initialize the string table.
 void writeString(byte[] string)
          Write out the string just uncompressed.
 
Methods inherited from class TIFFDecompressor
beginDecoding, createRawImage, decode, decodeRaw, decodeRaw, decodeRaw, decodeRaw, getRawImageType, getRawImageTypeSpecifier, setActiveSrcHeight, setActiveSrcMinX, setActiveSrcMinY, setActiveSrcWidth, setBitsPerSample, setByteCount, setColorConverter, setColorMap, setCompression, setDestinationBands, setDstHeight, setDstMinX, setDstMinY, setDstWidth, setDstXOffset, setDstYOffset, setExtraSamples, setImage, setMetadata, setOffset, setPhotometricInterpretation, setPlanar, setReader, setSampleFormat, setSamplesPerPixel, setSourceBands, setSourceXOffset, setSourceYOffset, setSrcHeight, setSrcMinX, setSrcMinY, setSrcWidth, setStream, setSubsampleX, setSubsampleY
 
Methods inherited from class Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

TIFFLZWDecompressor

public TIFFLZWDecompressor(int predictor)
                    throws IIOException
Throws:
IIOException
Method Detail

decodeRaw

public void decodeRaw(byte[] b,
                      int dstOffset,
                      int bitsPerPixel,
                      int scanlineStride)
               throws IOException
Description copied from class: TIFFDecompressor
Decodes the source data into the provided byte array b, starting at the offset given by dstOffset. Each pixel occupies bitsPerPixel bits, with no padding between pixels. Scanlines are separated by scanlineStride bytes.

Specified by:
decodeRaw in class TIFFDecompressor
Parameters:
b - a byte array to be written.
dstOffset - the starting offset in b to be written.
bitsPerPixel - the number of bits for each pixel.
scanlineStride - the number of bytes to advance between that starting pixels of each scanline.
Throws:
IOException - if an error occurs reading from the source ImageInputStream.

decode

public int decode(byte[] sdata,
                  int srcOffset,
                  byte[] ddata,
                  int dstOffset)
           throws IOException
Throws:
IOException

initializeStringTable

public void initializeStringTable()
Initialize the string table.


writeString

public void writeString(byte[] string)
Write out the string just uncompressed.


addStringToTable

public void addStringToTable(byte[] oldString,
                             byte newString)
Add a new string to the string table.


addStringToTable

public void addStringToTable(byte[] string)
Add a new string to the string table.


composeString

public byte[] composeString(byte[] oldString,
                            byte newString)
Append newString to the end of oldString.


getNextCode

public int getNextCode()


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