Class LZWCodec

java.lang.Object
org.eclipse.swt.internal.image.LZWCodec
final class LZWCodec extends Object

  • Field Details

    • bitsPerPixel

      int bitsPerPixel

    • blockSize

      int blockSize

    • blockIndex

      int blockIndex

    • currentByte

      int currentByte

    • bitsLeft

      int bitsLeft

    • codeSize

      int codeSize

    • clearCode

      int clearCode

    • endCode

      int endCode

    • newCodes

      int newCodes

    • topSlot

      int topSlot

    • currentSlot

      int currentSlot

    • imageWidth

      int imageWidth

    • imageHeight

      int imageHeight

    • imageX

      int imageX

    • imageY

      int imageY

    • pass

      int pass

    • line

      int line

    • codeMask

      int codeMask

    • block

      byte[] block

    • lineArray

      byte[] lineArray

    • stack

      int[] stack

    • suffix

      int[] suffix

    • prefix

      int[] prefix

    • nodeStack

      LZWNode[] nodeStack

    • inputStream

      LEDataInputStream inputStream

    • outputStream

      LEDataOutputStream outputStream

    • image

      ImageData image

    • loader

      ImageLoader loader

    • interlaced

      boolean interlaced

    • MASK_TABLE

      static final int[] MASK_TABLE

  • Constructor Details

    • LZWCodec

      LZWCodec()

  • Method Details

    • decode

      void decode()
      Decode the input.

    • decode

      public void decode(LEDataInputStream inputStream, ImageLoader loader, ImageData image, boolean interlaced, int depth)
      Decode the LZW-encoded bytes in the given byte stream into the given DeviceIndependentImage.

    • encode

      void encode()
      Encode the image.

    • encode

      public void encode(LEDataOutputStream byteStream, ImageData image)
      Encode the bytes into the given byte stream from the given DeviceIndependentImage.

    • encodeLoop

      int encodeLoop()
      Encoding loop broken out to allow early return.

    • initializeForDecoding

      void initializeForDecoding()
      Initialize the receiver for decoding the given byte array.

    • initializeForEncoding

      void initializeForEncoding()
      Initialize the receiver for encoding the given byte array.

    • nextCode

      int nextCode()
      Answer the next code from the input byte array.

    • nextPixel

      int nextPixel()
      Answer the next pixel to encode in the image

    • nextPixels

      void nextPixels(byte[] buf, int lineWidth)
      Copy a row of pixel values from the image.

    • nextPutCode

      void nextPutCode(int aCode)
      Output aCode to the output stream.

    • nextPutPixels

      void nextPutPixels(byte[] buf)
      Copy a row of pixel values to the image.

    • copyRow

      void copyRow(byte[] buf, int copies)
      Copy duplicate rows of pixel values to the image. This is to fill in rows if the image is interlaced.

    • readBlock

      int readBlock()
      Read a block from the byte stream. Return the number of bytes read. Throw an exception if the block could not be read.

    • writeBlock

      void writeBlock()
      Write a block to the byte stream. Throw an exception if the block could not be written.