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jpc_qmfb.h (6450B)
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1 /*
2 * Copyright (c) 1999-2000 Image Power, Inc. and the University of
3 * British Columbia.
4 * Copyright (c) 2001-2002 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) 1999-2000 Image Power, Inc.
13 * Copyright (c) 1999-2000 The University of British Columbia
14 * Copyright (c) 2001-2003 Michael David Adams
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 * Quadrature Mirror-Image Filter Bank (QMFB) Routines
66 *
67 * $Id: jpc_qmfb.h 1918 2005-07-24 14:12:08Z baford $
68 */
69
70 #ifndef JPC_QMFB_H
71 #define JPC_QMFB_H
72
73 /******************************************************************************\
74 * Includes.
75 \******************************************************************************/
76
77 #include "jasper/jas_seq.h"
78
79 /******************************************************************************\
80 * Constants.
81 \******************************************************************************/
82
83 /* The maximum number of channels for a QMF bank. */
84 #define JPC_QMFB1D_MAXCHANS 2
85
86 /* Select reversible integer-to-integer mode. */
87 #define JPC_QMFB1D_RITIMODE 1
88
89 /* Vertical filtering. */
90 #define JPC_QMFB1D_VERT 0x10000
91
92 /* QMFB IDs. */
93 #define JPC_QMFB1D_FT 1 /* 5/3 */
94 #define JPC_QMFB1D_NS 2 /* 9/7 */
95
96 /******************************************************************************\
97 * Types.
98 \******************************************************************************/
99
100 /* Forward declaration. */
101 struct jpc_qmfb1dops_s;
102
103 /* Band information. */
104
105 typedef struct {
106
107 /* The starting index for the band in the downsampled domain. */
108 int start;
109
110 /* The ending index for the band in the downsampled domain. */
111 int end;
112
113 /* The location of the start of the band. */
114 int locstart;
115
116 /* The location of the end of the band. */
117 int locend;
118
119 } jpc_qmfb1dband_t;
120
121 /* QMF bank */
122
123 typedef struct {
124
125 /* The operations for this QMFB. */
126 struct jpc_qmfb1dops_s *ops;
127
128 } jpc_qmfb1d_t;
129
130 /* QMFB operations. */
131
132 typedef struct jpc_qmfb1dops_s {
133
134 /* The number of channels in the QMFB. */
135 int (*getnumchans)(jpc_qmfb1d_t *qmfb);
136
137 /* Get the analysis filters for this QMFB. */
138 int (*getanalfilters)(jpc_qmfb1d_t *qmfb, int len, jas_seq2d_t **filters);
139
140 /* Get the synthesis filters for this QMFB. */
141 int (*getsynfilters)(jpc_qmfb1d_t *qmfb, int len, jas_seq2d_t **filters);
142
143 /* Do analysis. */
144 void (*analyze)(jpc_qmfb1d_t *qmfb, int flags, jas_seq2d_t *x);
145
146 /* Do synthesis. */
147 void (*synthesize)(jpc_qmfb1d_t *qmfb, int flags, jas_seq2d_t *x);
148
149 } jpc_qmfb1dops_t;
150
151 /******************************************************************************\
152 * Functions.
153 \******************************************************************************/
154
155 /* Create a QMFB from a QMFB ID. */
156 jpc_qmfb1d_t *jpc_qmfb1d_make(int qmfbid);
157
158 /* Create a copy of a QMFB. */
159 jpc_qmfb1d_t *jpc_qmfb1d_copy(jpc_qmfb1d_t *qmfb);
160
161 /* Destroy a QMFB. */
162 void jpc_qmfb1d_destroy(jpc_qmfb1d_t *qmfb);
163
164 /* Get the number of channels for a QMFB. */
165 int jpc_qmfb1d_getnumchans(jpc_qmfb1d_t *qmfb);
166
167 /* Get the analysis filters for a QMFB. */
168 int jpc_qmfb1d_getanalfilters(jpc_qmfb1d_t *qmfb, int len,
169 jas_seq2d_t **filters);
170
171 /* Get the synthesis filters for a QMFB. */
172 int jpc_qmfb1d_getsynfilters(jpc_qmfb1d_t *qmfb, int len,
173 jas_seq2d_t **filters);
174
175 /* Get the bands for a QMFB. */
176 void jpc_qmfb1d_getbands(jpc_qmfb1d_t *qmfb, int flags, uint_fast32_t xstart,
177 uint_fast32_t ystart, uint_fast32_t xend, uint_fast32_t yend, int maxbands,
178 int *numbandsptr, jpc_qmfb1dband_t *bands);
179
180 /* Perform analysis. */
181 void jpc_qmfb1d_analyze(jpc_qmfb1d_t *qmfb, int flags, jas_seq2d_t *x);
182
183 /* Perform synthesis. */
184 void jpc_qmfb1d_synthesize(jpc_qmfb1d_t *qmfb, int flags, jas_seq2d_t *x);
185
186 #endif