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 * $Id: jpc_util.c,v 1.2 2008-05-26 09:40:52 vp153 Exp $
66 */
67
68 /******************************************************************************\
69 * Includes
70 \******************************************************************************/
71
72 #include <assert.h>
73 #include <stdio.h>
74 #include <string.h>
75 #include <math.h>
76 #include <stdlib.h>
77 #include <stdarg.h>
78
79 #include "jasper/jas_math.h"
80 #include "jasper/jas_malloc.h"
81
82 #include "jpc_fix.h"
83 #include "jpc_cs.h"
84 #include "jpc_flt.h"
85 #include "jpc_util.h"
86
87 /******************************************************************************\
88 * Miscellaneous Functions
89 \******************************************************************************/
90
jpc_atoaf(char * s,int * numvalues,double ** values)91 int jpc_atoaf(char *s, int *numvalues, double **values)
92 {
93 static char delim[] = ", \t\n";
94 char buf[4096];
95 int n;
96 double *vs;
97 char *cp;
98
99 strncpy(buf, s, sizeof(buf));
100 buf[sizeof(buf) - 1] = '\0';
101 n = 0;
102 if ((cp = strtok(buf, delim))) {
103 ++n;
104 while ((cp = strtok(0, delim))) {
105 if (cp != '\0') {
106 ++n;
107 }
108 }
109 }
110
111 if (n) {
112 if (!(vs = jas_alloc2(n, sizeof(double)))) {
113 return -1;
114 }
115
116 strncpy(buf, s, sizeof(buf));
117 buf[sizeof(buf) - 1] = '\0';
118 n = 0;
119 if ((cp = strtok(buf, delim))) {
120 vs[n] = atof(cp);
121 ++n;
122 while ((cp = strtok(0, delim))) {
123 if (cp != '\0') {
124 vs[n] = atof(cp);
125 ++n;
126 }
127 }
128 }
129 } else {
130 vs = 0;
131 }
132
133 *numvalues = n;
134 *values = vs;
135
136 return 0;
137 }
138
jpc_seq_upsample(jas_seq_t * x,int m)139 jas_seq_t *jpc_seq_upsample(jas_seq_t *x, int m)
140 {
141 jas_seq_t *z;
142 int i;
143
144 if (!(z = jas_seq_create(jas_seq_start(x) * m, (jas_seq_end(x) - 1) * m + 1)))
145 return 0;
146 for (i = jas_seq_start(z); i < jas_seq_end(z); i++) {
147 *jas_seq_getref(z, i) = (!JAS_MOD(i, m)) ? jas_seq_get(x, i / m) :
148 jpc_inttofix(0);
149 }
150
151 return z;
152 }
153
jpc_seq_norm(jas_seq_t * x)154 jpc_fix_t jpc_seq_norm(jas_seq_t *x)
155 {
156 jpc_fix_t s;
157 int i;
158
159 s = jpc_inttofix(0);
160 for (i = jas_seq_start(x); i < jas_seq_end(x); i++) {
161 s = jpc_fix_add(s, jpc_fix_mul(jas_seq_get(x, i), jas_seq_get(x, i)));
162 }
163
164 return jpc_dbltofix(sqrt(jpc_fixtodbl(s)));
165 }
166
jpc_seq_conv(jas_seq_t * x,jas_seq_t * y)167 jas_seq_t *jpc_seq_conv(jas_seq_t *x, jas_seq_t *y)
168 {
169 int i;
170 int j;
171 int k;
172 jas_seq_t *z;
173 jpc_fix_t s;
174 jpc_fix_t v;
175
176 z = jas_seq_create(jas_seq_start(x) + jas_seq_start(y),
177 jas_seq_end(x) + jas_seq_end(y) - 1);
178 assert(z);
179 for (i = jas_seq_start(z); i < jas_seq_end(z); i++) {
180 s = jpc_inttofix(0);
181 for (j = jas_seq_start(y); j < jas_seq_end(y); j++) {
182 k = i - j;
183 if (k < jas_seq_start(x) || k >= jas_seq_end(x)) {
184 v = JPC_FIX_ZERO;
185 } else {
186 v = jas_seq_get(x, k);
187 }
188 s = jpc_fix_add(s, jpc_fix_mul(jas_seq_get(y, j), v));
189 }
190 *jas_seq_getref(z, i) = s;
191 }
192
193 return z;
194 }
195