jpc_mqcod.h
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
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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,
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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 * $Id$
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