Class WTDecompSpec

java.lang.Object
jj2000.j2k.wavelet.WTDecompSpec

public class WTDecompSpec extends Object
This class holds the decomposition type to be used in each part of the image; the default one, the component specific ones, the tile default ones and the component-tile specific ones.

The decomposition type identifiers values are the same as in the codestream.

The hierarchy is:
- Tile and component specific decomposition
- Tile specific default decomposition
- Component main default decomposition
- Main default decomposition

At the moment tiles are not supported by this class.

  • Field Summary

    Fields
    Modifier and Type
    Field
    Description
    static final byte
    The identifier for "component default" specified decomposition
    static final byte
    The identifier for "main default" specified decomposition
    static final byte
    The identifier for "tile and component specific" specified decomposition
    static final byte
    The identifier for "tile specific default" specified decomposition
    static final int
    ID for the dyadic wavelet tree decomposition (also called "Mallat" in JPEG 2000): 0x00.
    static final int
    ID for the PACKET (as defined in JPEG 2000) wavelet tree decomposition (2 levels of decomposition in the high bands and some specified number for the lowest LL band): 0x01.
    static final int
    ID for the SPACL (as defined in JPEG 2000) wavelet tree decomposition (1 level of decomposition in the high bands and some specified number for the lowest LL band): 0x02.
  • Constructor Summary

    Constructors
    Constructor
    Description
    WTDecompSpec(int nc, int dec, int lev)
    Constructs a new 'WTDecompSpec' for the specified number of components and tiles, with the given main default decomposition type and number of levels.
  • Method Summary

    Modifier and Type
    Method
    Description
    int
    Returns the decomposition type to be used in component 'n' and tile 't'.
    byte
    Returns the type of specification for the decomposition in the specified component and tile.
    int
    getLevels(int n)
    Returns the decomposition number of levels in component 'n' and tile 't'.
    int
    Returns the main default decomposition type.
    int
    Returns the main default decomposition number of levels.
    void
    setMainCompDefDecompType(int n, int dec, int lev)
    Sets the "component main default" decomposition type and number of levels for the specified component.

    Methods inherited from class java.lang.Object

    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
  • Field Details

    • WT_DECOMP_DYADIC

      public static final int WT_DECOMP_DYADIC
      ID for the dyadic wavelet tree decomposition (also called "Mallat" in JPEG 2000): 0x00.
      See Also:
    • WT_DECOMP_SPACL

      public static final int WT_DECOMP_SPACL
      ID for the SPACL (as defined in JPEG 2000) wavelet tree decomposition (1 level of decomposition in the high bands and some specified number for the lowest LL band): 0x02.
      See Also:
    • WT_DECOMP_PACKET

      public static final int WT_DECOMP_PACKET
      ID for the PACKET (as defined in JPEG 2000) wavelet tree decomposition (2 levels of decomposition in the high bands and some specified number for the lowest LL band): 0x01.
      See Also:
    • DEC_SPEC_MAIN_DEF

      public static final byte DEC_SPEC_MAIN_DEF
      The identifier for "main default" specified decomposition
      See Also:
    • DEC_SPEC_COMP_DEF

      public static final byte DEC_SPEC_COMP_DEF
      The identifier for "component default" specified decomposition
      See Also:
    • DEC_SPEC_TILE_DEF

      public static final byte DEC_SPEC_TILE_DEF
      The identifier for "tile specific default" specified decomposition
      See Also:
    • DEC_SPEC_TILE_COMP

      public static final byte DEC_SPEC_TILE_COMP
      The identifier for "tile and component specific" specified decomposition
      See Also:
  • Constructor Details

    • WTDecompSpec

      public WTDecompSpec(int nc, int dec, int lev)
      Constructs a new 'WTDecompSpec' for the specified number of components and tiles, with the given main default decomposition type and number of levels.

      NOTE: The tile specific things are not supported yet

      Parameters:
      nc - The number of components
      dec - The main default decomposition type
      lev - The main default number of decomposition levels
  • Method Details

    • setMainCompDefDecompType

      public void setMainCompDefDecompType(int n, int dec, int lev)
      Sets the "component main default" decomposition type and number of levels for the specified component. Both 'dec' and 'lev' can not be negative at the same time.
      Parameters:
      n - The component index
      dec - The decomposition type. If negative then the main default is used.
      lev - The number of levels. If negative then the main defaul is used.
    • getDecSpecType

      public byte getDecSpecType(int n)
      Returns the type of specification for the decomposition in the specified component and tile. The specification type is one of: 'DEC_SPEC_MAIN_DEF', 'DEC_SPEC_COMP_DEF', 'DEC_SPEC_TILE_DEF', 'DEC_SPEC_TILE_COMP'.

      NOTE: The tile specific things are not supported yet

      Parameters:
      n - The component index
      Returns:
      The specification type for component 'n' and tile 't'.
    • getMainDefDecompType

      public int getMainDefDecompType()
      Returns the main default decomposition type.
      Returns:
      The main default decomposition type.
    • getMainDefLevels

      public int getMainDefLevels()
      Returns the main default decomposition number of levels.
      Returns:
      The main default decomposition number of levels.
    • getDecompType

      public int getDecompType(int n)
      Returns the decomposition type to be used in component 'n' and tile 't'.

      NOTE: The tile specific things are not supported yet

      Parameters:
      n - The component index.
      Returns:
      The decomposition type to be used.
    • getLevels

      public int getLevels(int n)
      Returns the decomposition number of levels in component 'n' and tile 't'.

      NOTE: The tile specific things are not supported yet

      Parameters:
      n - The component index.
      Returns:
      The decomposition number of levels.