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/*
* $RCSfile: Markers.java,v $
* $Revision: 1.1 $
* $Date: 2005/02/11 05:02:00 $
* $State: Exp $
*
* Class: Markers
*
* Description: Defines the values of the markers in JPEG 2000 codestream
*
* COPYRIGHT:
*
* This software module was originally developed by Raphaël Grosbois and
* Diego Santa Cruz (Swiss Federal Institute of Technology-EPFL); Joel
* Askelöf (Ericsson Radio Systems AB); and Bertrand Berthelot, David
* Bouchard, Félix Henry, Gerard Mozelle and Patrice Onno (Canon Research
* Centre France S.A) in the course of development of the JPEG2000
* standard as specified by ISO/IEC 15444 (JPEG 2000 Standard). This
* software module is an implementation of a part of the JPEG 2000
* Standard. Swiss Federal Institute of Technology-EPFL, Ericsson Radio
* Systems AB and Canon Research Centre France S.A (collectively JJ2000
* Partners) agree not to assert against ISO/IEC and users of the JPEG
* 2000 Standard (Users) any of their rights under the copyright, not
* including other intellectual property rights, for this software module
* with respect to the usage by ISO/IEC and Users of this software module
* or modifications thereof for use in hardware or software products
* claiming conformance to the JPEG 2000 Standard. Those intending to use
* this software module in hardware or software products are advised that
* their use may infringe existing patents. The original developers of
* this software module, JJ2000 Partners and ISO/IEC assume no liability
* for use of this software module or modifications thereof. No license
* or right to this software module is granted for non JPEG 2000 Standard
* conforming products. JJ2000 Partners have full right to use this
* software module for his/her own purpose, assign or donate this
* software module to any third party and to inhibit third parties from
* using this software module for non JPEG 2000 Standard conforming
* products. This copyright notice must be included in all copies or
* derivative works of this software module.
*
* Copyright (c) 1999/2000 JJ2000 Partners.
* */
package jj2000.j2k.codestream;
/**
* This interface defines the values of the different markers in the JPEG 2000
* codestream. They are 16 bit values, always appearing in big-endian (most
* significant byte first) and byte-aligned in the codestream. This interface
* also defines some other constants such as bit-masks and bit-shifts.
* */
public interface Markers {
// ----> Delimiting markers and marker segments <----
/** Start of codestream (SOC): 0xFF4F */
public final static short SOC = (short)0xff4f;
/** Start of tile-part (SOT): 0xFF90 */
public final static short SOT = (short)0xff90;
/** Start of data (SOD): 0xFF93 */
public final static short SOD = (short)0xff93;
/** End of codestream (EOC): 0xFFD9 */
public final static short EOC = (short)0xffd9;
// ----> Fixed information marker segments <----
// ** SIZ marker **
/** SIZ marker (Image and tile size): 0xFF51 */
public final static short SIZ = (short)0xff51;
/** No special capabilities (baseline) in codestream, in Rsiz field of SIZ
* marker: 0x00. All flag bits are turned off */
public final static int RSIZ_BASELINE = 0x00;
/** Error resilience marker flag bit in Rsiz field in SIZ marker: 0x01 */
public final static int RSIZ_ER_FLAG = 0x01;
/** ROI present marker flag bit in Rsiz field in SIZ marker: 0x02 */
public final static int RSIZ_ROI = 0x02;
/** Component bitdepth bits in Ssiz field in SIZ marker: 7 */
public final static int SSIZ_DEPTH_BITS = 7;
/** The maximum number of component bitdepth */
public static final int MAX_COMP_BITDEPTH = 38;
// ----> Functional marker segments <----
// ** COD/COC marker **
/** Coding style default (COD): 0xFF52 */
public final static short COD = (short)0xff52;
/** Coding style component (COC): 0xFF53 */
public final static short COC = (short)0xff53;
/** Precinct used flag */
public final static int SCOX_PRECINCT_PARTITION = 1;
/** Use start of packet marker */
public final static int SCOX_USE_SOP = 2;
/** Use end of packet header marker */
public final static int SCOX_USE_EPH = 4;
/** Horizontal code-block partition origin is at x=1 */
public final static int SCOX_HOR_CB_PART = 8;
/** Vertical code-block partition origin is at y=1 */
public final static int SCOX_VER_CB_PART = 16;
/** The default size exponent of the precincts */
public final static int PRECINCT_PARTITION_DEF_SIZE = 0xffff;
// ** RGN marker segment **
/** Region-of-interest (RGN): 0xFF5E */
public final static short RGN = (short)0xff5e;
/** Implicit (i.e. max-shift) ROI flag for Srgn field in RGN marker
segment: 0x00 */
public final static int SRGN_IMPLICIT = 0x00;
// ** QCD/QCC markers **
/** Quantization default (QCD): 0xFF5C */
public final static short QCD = (short)0xff5c;
/** Quantization component (QCC): 0xFF5D */
public final static short QCC = (short)0xff5d;
/** Guard bits shift in SQCX field: 5 */
public final static int SQCX_GB_SHIFT = 5;
/** Guard bits mask in SQCX field: 7 */
public final static int SQCX_GB_MSK = 7;
/** No quantization (i.e. embedded reversible) flag for Sqcd or Sqcc
* (Sqcx) fields: 0x00. */
public final static int SQCX_NO_QUANTIZATION = 0x00;
/** Scalar derived (i.e. LL values only) quantization flag for Sqcd or
* Sqcc (Sqcx) fields: 0x01. */
public final static int SQCX_SCALAR_DERIVED = 0x01;
/** Scalar expounded (i.e. all values) quantization flag for Sqcd or Sqcc
* (Sqcx) fields: 0x02. */
public final static int SQCX_SCALAR_EXPOUNDED = 0x02;
/** Exponent shift in SPQCX when no quantization: 3 */
public final static int SQCX_EXP_SHIFT = 3;
/** Exponent bitmask in SPQCX when no quantization: 3 */
public final static int SQCX_EXP_MASK = (1<<5)-1;
/** The "SOP marker segments used" flag within Sers: 1 */
public final static int ERS_SOP = 1;
/** The "segmentation symbols used" flag within Sers: 2 */
public final static int ERS_SEG_SYMBOLS = 2;
// ** Progression order change **
public final static short POC = (short)0xff5f;
// ----> Pointer marker segments <----
/** Tile-part lengths (TLM): 0xFF55 */
public final static short TLM = (short)0xff55;
/** Packet length, main header (PLM): 0xFF57 */
public final static short PLM = (short)0xff57;
/** Packet length, tile-part header (PLT): 0xFF58 */
public final static short PLT = (short)0xff58;
/** Packed packet headers, main header (PPM): 0xFF60 */
public final static short PPM = (short)0xff60;
/** Packed packet headers, tile-part header (PPT): 0xFF61 */
public final static short PPT = (short)0xff61;
/** Maximum length of PPT marker segment */
public final static int MAX_LPPT = 65535;
/** Maximum length of PPM marker segment */
public final static int MAX_LPPM = 65535;
// ----> In bit stream markers and marker segments <----
/** Start pf packet (SOP): 0xFF91 */
public final static short SOP = (short)0xff91;
/** Length of SOP marker (in bytes) */
public final static short SOP_LENGTH = 6;
/** End of packet header (EPH): 0xFF92 */
public final static short EPH = (short)0xff92;
/** Length of EPH marker (in bytes) */
public final static short EPH_LENGTH = 2;
// ----> Informational marker segments <----
/** Component registration (CRG): 0xFF63 */
public final static short CRG = (short)0xff63;
/** Comment (COM): 0xFF64 */
public final static short COM = (short)0xff64;
/** General use registration value (COM): 0x0001 */
public final static short RCOM_GEN_USE = (short)0x0001;
}