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      1 /*
      2  * Copyright (c) 1999-2000 Image Power, Inc. and the University of
      3  *   British Columbia.
      4  * Copyright (c) 2001-2003 Michael David Adams.
      5  * All rights reserved.
      6  */
      7 
      8 /* __START_OF_JASPER_LICENSE__
      9  *
     10  * JasPer License Version 2.0
     11  *
     12  * Copyright (c) 2001-2006 Michael David Adams
     13  * Copyright (c) 1999-2000 Image Power, Inc.
     14  * Copyright (c) 1999-2000 The University of British Columbia
     15  *
     16  * All rights reserved.
     17  *
     18  * Permission is hereby granted, free of charge, to any person (the
     19  * "User") obtaining a copy of this software and associated documentation
     20  * files (the "Software"), to deal in the Software without restriction,
     21  * including without limitation the rights to use, copy, modify, merge,
     22  * publish, distribute, and/or sell copies of the Software, and to permit
     23  * persons to whom the Software is furnished to do so, subject to the
     24  * following conditions:
     25  *
     26  * 1.  The above copyright notices and this permission notice (which
     27  * includes the disclaimer below) shall be included in all copies or
     28  * substantial portions of the Software.
     29  *
     30  * 2.  The name of a copyright holder shall not be used to endorse or
     31  * promote products derived from the Software without specific prior
     32  * written permission.
     33  *
     34  * THIS DISCLAIMER OF WARRANTY CONSTITUTES AN ESSENTIAL PART OF THIS
     35  * LICENSE.  NO USE OF THE SOFTWARE IS AUTHORIZED HEREUNDER EXCEPT UNDER
     36  * THIS DISCLAIMER.  THE SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS
     37  * "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
     38  * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
     39  * PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS.  IN NO
     40  * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, OR ANY SPECIAL
     41  * INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES WHATSOEVER RESULTING
     42  * FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
     43  * NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
     44  * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.  NO ASSURANCES ARE
     45  * PROVIDED BY THE COPYRIGHT HOLDERS THAT THE SOFTWARE DOES NOT INFRINGE
     46  * THE PATENT OR OTHER INTELLECTUAL PROPERTY RIGHTS OF ANY OTHER ENTITY.
     47  * EACH COPYRIGHT HOLDER DISCLAIMS ANY LIABILITY TO THE USER FOR CLAIMS
     48  * BROUGHT BY ANY OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL
     49  * PROPERTY RIGHTS OR OTHERWISE.  AS A CONDITION TO EXERCISING THE RIGHTS
     50  * GRANTED HEREUNDER, EACH USER HEREBY ASSUMES SOLE RESPONSIBILITY TO SECURE
     51  * ANY OTHER INTELLECTUAL PROPERTY RIGHTS NEEDED, IF ANY.  THE SOFTWARE
     52  * IS NOT FAULT-TOLERANT AND IS NOT INTENDED FOR USE IN MISSION-CRITICAL
     53  * SYSTEMS, SUCH AS THOSE USED IN THE OPERATION OF NUCLEAR FACILITIES,
     54  * AIRCRAFT NAVIGATION OR COMMUNICATION SYSTEMS, AIR TRAFFIC CONTROL
     55  * SYSTEMS, DIRECT LIFE SUPPORT MACHINES, OR WEAPONS SYSTEMS, IN WHICH
     56  * THE FAILURE OF THE SOFTWARE OR SYSTEM COULD LEAD DIRECTLY TO DEATH,
     57  * PERSONAL INJURY, OR SEVERE PHYSICAL OR ENVIRONMENTAL DAMAGE ("HIGH
     58  * RISK ACTIVITIES").  THE COPYRIGHT HOLDERS SPECIFICALLY DISCLAIM ANY
     59  * EXPRESS OR IMPLIED WARRANTY OF FITNESS FOR HIGH RISK ACTIVITIES.
     60  *
     61  * __END_OF_JASPER_LICENSE__
     62  */
     63 
     64 /*
     65  * MQ Arithmetic Coder
     66  *
     67  * $Id: jpc_mqcod.h,v 1.2 2008-05-26 09:40:52 vp153 Exp $
     68  */
     69 
     70 #ifndef JPC_MQCOD_H
     71 #define JPC_MQCOD_H
     72 
     73 /******************************************************************************\
     74 * Includes.
     75 \******************************************************************************/
     76 
     77 #include "jasper/jas_types.h"
     78 
     79 /******************************************************************************\
     80 * Types.
     81 \******************************************************************************/
     82 
     83 /*
     84  * MQ coder context information.
     85  */
     86 
     87 typedef struct {
     88 
     89     /* The most probable symbol (MPS). */
     90     int mps;
     91 
     92     /* The state index. */
     93     int_fast16_t ind;
     94 
     95 } jpc_mqctx_t;
     96 
     97 /*
     98  * MQ coder state table entry.
     99  */
    100 
    101 typedef struct jpc_mqstate_s {
    102 
    103     /* The Qe value. */
    104     uint_fast16_t qeval;
    105 
    106     /* The MPS. */
    107     int mps;
    108 
    109     /* The NMPS state. */
    110     struct jpc_mqstate_s *nmps;
    111 
    112     /* The NLPS state. */
    113     struct jpc_mqstate_s *nlps;
    114 
    115 } jpc_mqstate_t;
    116 
    117 /******************************************************************************\
    118 * Data.
    119 \******************************************************************************/
    120 
    121 /* The state table for the MQ coder. */
    122 extern jpc_mqstate_t jpc_mqstates[];
    123 
    124 #endif
    125