/* * CVS identifier: * * $Id: Markers.java,v 1.11 2001/02/14 13:18:03 grosbois Exp $ * * Class:                   Markers * * Description: Defines the values of the markers in JPEG 2000 codestream * * COPYRIGHT: *  * This software module was originally developed by Rapha雔 Grosbois and * Diego Santa Cruz (Swiss Federal Institute of Technology-EPFL); Joel * Askel鰂 (Ericsson Radio Systems AB); and Bertrand Berthelot, David * Bouchard, F閘ix 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;    /** 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_MARKERS = 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;}