Field Detail

• SOC

  protected static final int SOC

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  Constant Field Values

• COD

  protected static final int COD

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• COC

  protected static final int COC

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• TLM

  protected static final int TLM

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• PLM

  protected static final int PLM

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• PLT

  protected static final int PLT

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• QCD

  protected static final int QCD

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• QCC

  protected static final int QCC

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• RGN

  protected static final int RGN

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• POC

  protected static final int POC

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• PPM

  protected static final int PPM

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• PPT

  protected static final int PPT

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• CRG

  protected static final int CRG

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• COM

  protected static final int COM

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• SOT

  protected static final int SOT

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• SOP

  protected static final int SOP

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• EPH

  protected static final int EPH

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• SOD

  protected static final int SOD

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• EOC

  protected static final int EOC

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• SIZ

  protected static final int SIZ

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• _ccs

  protected ContCodestream _ccs

• _cs

  protected Codestream _cs

• _module

  protected Jpeg2000Module _module

• _dstream

  protected DataInputStream _dstream

• _repInfo

  protected RepInfo _repInfo

Constructor Detail

• MarkerSegment

  public MarkerSegment()

  Constructor. After an instance of a MarkerSegment is created, the setter methods setContCodestream, setCodestream, setModule, and setDataInputStream must all be called as part of the setup before process is called.

Method Detail

• setContCodestream

  public void setContCodestream(ContCodestream ccs)

  Sets the Continuous Codestream from which this marker was obtained.

• setCodestream

  public void setCodestream(Codestream cs)

  Sets the Codestream object being built.

• setModule

  public void setModule(Jpeg2000Module module)

  Sets the Module under which all this is happening.

• setDataInputStream

  public void setDataInputStream(DataInputStream dstream)

  Sets the DataInputStream over which this marker is being read.

• setRepInfo

  public void setRepInfo(RepInfo repInfo)

  Sets the RepInfo into which messages may be placed.

• isMarker

  public boolean isMarker()

  Returns true if this segment is a Marker. Will return false unless overridden.

• markerSegmentMaker

  protected static MarkerSegment markerSegmentMaker(int markerCode)

  Static factory method for generating an object of the appropriate subclass of MarkerSegment, based on the marker code.

  Parameters:

  markerCode - The 8-bit marker code (ignoring the FF).

• readMarkLen

  protected int readMarkLen()
                     throws IOException

  Reads and returns the length field of the marker segment. The setter methods setModule and setDataInputStream must be called as part of the setup before readMarkLen is called.

  Throws:

  IOException

• nCompBytes

  protected int nCompBytes()

  Determines size of fields indexed by number of components. Some marker segments have fields which are 1 byte long if the number of components is 1-255, and 2 bytes long if the number of components is 256-65535.

  Returns:

  0 if number of components not yet set, otherwise 1 or 2

• getMainOrTile

  protected MainOrTile getMainOrTile()

  Returns the MainOrTile object which is currently applicable in the Contiguous Codestream. If the Contiguous Codestream has a current Tile, that is returned; otherwise the Codestream object established by setCodestream is returned.

• process

  protected abstract boolean process(int bytesToEat)
                              throws IOException

  Process the marker or marker segment. The DataInputStream will be at the point of having read the marker code. The process method must consume exactly the number of bytes remaining in the marker segment; for a marker, this number will always be 0.

  Parameters:

  bytesToEat - The number of bytes that must be consumed. For a Marker, this number will always be 0. If it is 0 for a MarkerSegment, the number of bytes to consume is unknown.

  Returns:

  true if segment is well-formed, false otherwise.

  Throws:

  IOException