# CSJ2K.j2k.entropy.decoder.EntropyDecoder ## Content

EntropyDecoder Class

Inheritance
object
MultiResImgDataAdapter
EntropyDecoder
StdEntropyDecoder
Implements
CBlkQuantDataSrcDec
InvWTData
MultiResImgData
Namespace: CSJ2K.j2k.entropy.decoder
Assembly: C1.WPF.ReportViewer.4.6.2.dll
Syntax
public abstract class EntropyDecoder : MultiResImgDataAdapter, CBlkQuantDataSrcDec, InvWTData, MultiResImgData
Public MustInherit Class EntropyDecoder
    Inherits MultiResImgDataAdapter
    Implements CBlkQuantDataSrcDec, InvWTData, MultiResImgData

Constructors

Name Description
EntropyDecoder(CodedCBlkDataSrcDec)

Initializes the source of compressed data.

Fields

Name Description
OPT_PREFIX

The prefix for entropy decoder optiojns: 'C'
src

The bit stream transport from where to get the compressed data (the source)

Properties

Name Description
CbULX

Returns the horizontal code-block partition origin. Allowable values are 0 and 1, nothing else.
CbULY

Returns the vertical code-block partition origin. Allowable values are 0 and 1, nothing else.
ParameterInfo

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.

Methods

Name Description
getCodeBlock(int, int, int, SubbandSyn, DataBlk)

Returns the specified code-block in the current tile for the specified component, as a copy (see below).

       <p>The returned code-block may be progressive, which is indicated by
       the 'progressive' variable of the returned 'DataBlk' object. If a
       code-block is progressive it means that in a later request to this
       method for the same code-block it is possible to retrieve data which is
       a better approximation, since meanwhile more data to decode for the
       code-block could have been received. If the code-block is not
       progressive then later calls to this method for the same code-block
       will return the exact same data values.</p><p>The data returned by this method is always a copy of the internal
       data of this object, if any, and it can be modified "in place" without
       any problems after being returned. The 'offset' of the returned data is
       0, and the 'scanw' is the same as the code-block width. See the
       'DataBlk' class.</p><p>The 'ulx' and 'uly' members of the returned 'DataBlk' object contain
       the coordinates of the top-left corner of the block, with respect to
       the tile, not the subband.</p>
getInternCodeBlock(int, int, int, SubbandSyn, DataBlk)

Returns the specified code-block in the current tile for the specified component (as a reference or copy).

       <p>The returned code-block may be progressive, which is indicated by
       the 'progressive' variable of the returned 'DataBlk' object. If a
       code-block is progressive it means that in a later request to this
       method for the same code-block it is possible to retrieve data which is
       a better approximation, since meanwhile more data to decode for the
       code-block could have been received. If the code-block is not
       progressive then later calls to this method for the same code-block
       will return the exact same data values.</p><p>The data returned by this method can be the data in the internal
       buffer of this object, if any, and thus can not be modified by the
       caller. The 'offset' and 'scanw' of the returned data can be
       arbitrary. See the 'DataBlk' class.</p><p>The 'ulx' and 'uly' members of the returned 'DataBlk' object contain
       the coordinates of the top-left corner of the block, with respect to
       the tile, not the subband.</p>
getSynSubbandTree(int, int)

Returns the specified synthesis subband tree