dotnet-framework-api
- C1.WPF.PdfViewer.4.6.2 Assembly

CSJ2K.j2k.codestream.reader.PktDecoder

PktDecoder Class

This class is used to read packet's head and body. All the members must be re-initialized at the beginning of each tile thanks to the restart() method.

Inheritance

object

PktDecoder

Namespace: CSJ2K.j2k.codestream.reader

Assembly: C1.WPF.PdfViewer.4.6.2.dll

Syntax

public class PktDecoder

Constructors

Name	Description
PktDecoder(DecoderSpecs, HeaderDecoder, RandomAccessIO, BitstreamReaderAgent, bool, int)	Creates an empty PktDecoder object associated with given decoder specifications and HeaderDecoder. This object must be initialized thanks to the restart method before being used.

Methods

Name	Description
getNumPrecinct(int, int)	Gets the number of precincts in a given component and resolution level.
getPPX(int, int, int)	Returns the precinct partition width for the specified component, resolution level and tile.
getPPY(int, int, int)	Returns the precinct partition height for the specified component, resolution level and tile.
getPrecInfo(int, int, int)	Get PrecInfo instance of the specified resolution level, component and precinct.
readEPHMarker(PktHeaderBitReader)	Try to read an EPH marker. If it is not possible then an Error is thrown.
readPktBody(int, int, int, int, CBlkInfo[][][], int[])	Reads specificied packet body in order to find offset of each code-block's piece of codeword. This use the list of found code-blocks in previous red packet head.
readPktHead(int, int, int, int, CBlkInfo[][][], int[])	Read specified packet head and found length of each code-block's piece of codewords as well as number of skipped most significant bit-planes.
readSOPMarker(int[], int, int, int)	Try to read a SOP marker and check that its sequence number if not out of sequence. If so, an error is thrown.
restart(int, int[], int, CBlkInfo[][][][][], bool, MemoryStream)	Re-initialize the PktDecoder instance at the beginning of a new tile.