| java.lang.Object
 jj2000.j2k.wavelet.synthesis.MultiResImgDataAdapter
jj2000.j2k.entropy.decoder.EntropyDecoder
All known Subclasses: jj2000.j2k.entropy.decoder.StdEntropyDecoder,
| EntropyDecoder | | abstract public class EntropyDecoder extends MultiResImgDataAdapter implements CBlkQuantDataSrcDec(Code) | | This is the abstract class from which all entropy decoders must
inherit. This class implements the 'MultiResImgData', therefore it has the
concept of a current tile and all operations are performed on the current
tile.
Default implementations of the methods in 'MultiResImgData' are provided
through the 'MultiResImgDataAdapter' abstract class.
Sign magnitude representation is used (instead of two's complement) for
the output data. The most significant bit is used for the sign (0 if
positive, 1 if negative). Then the magnitude of the quantized coefficient
is stored in the next most significat bits. The most significant magnitude
bit corresponds to the most significant bit-plane and so on.
See Also: MultiResImgData
See Also: MultiResImgDataAdapter |
| Method Summary | |
| public int | getCbULX()
Returns the horizontal code-block partition origin. | | public int | getCbULY()
Returns the vertical code-block partition origin. | | public static String[][] | getParameterInfo()
Returns the parameters that are used in this class and
implementing classes. | | public SubbandSyn | getSynSubbandTree(int t, int c)
Returns the subband tree, for the specified tile-component. |
| OPT_PREFIX | | final public static char OPT_PREFIX(Code) | | The prefix for entropy decoder optiojns: 'C'
|
| EntropyDecoder | | public EntropyDecoder(CodedCBlkDataSrcDec src)(Code) | | Initializes the source of compressed data.
Parameters:
src - From where to obtain the compressed data. |
| getCbULX | | public int getCbULX()(Code) | | Returns the horizontal code-block partition origin. Allowable values
are 0 and 1, nothing else.
|
| getCbULY | | public int getCbULY()(Code) | | Returns the vertical code-block partition origin. Allowable values are
0 and 1, nothing else.
|
| getParameterInfo | | public static String[][] getParameterInfo()(Code) | | Returns the parameters that are used in this class and
implementing classes. It returns a 2D String array. Each of the
1D arrays is for a different option, and they have 3
elements. The first element is the option name, the second one
is the synopsis and the third one is a long description of what
the parameter is. The synopsis or description may be 'null', in
which case it is assumed that there is no synopsis or
description of the option, respectively. Null may be returned
if no options are supported.
the options name, their synopsis and their explanation,or null if no options are supported. |
| getSynSubbandTree | | public SubbandSyn getSynSubbandTree(int t, int c)(Code) | | Returns the subband tree, for the specified tile-component. This method
returns the root element of the subband tree structure, see Subband and
SubbandSyn. The tree comprises all the available resolution levels.
The number of magnitude bits ('magBits' member variable) for
each subband is not initialized.
Parameters:
t - The index of the tile, from 0 to T-1.
Parameters:
c - The index of the component, from 0 to C-1. The root of the tree structure. |
|
|