ref: f7e5af47f117be34669dc1e532d525dcbbff73f0
dir: /jpc_util.c/
/*
* Copyright (c) 1999-2000 Image Power, Inc. and the University of
* British Columbia.
* Copyright (c) 2001-2003 Michael David Adams.
* All rights reserved.
*/
/* __START_OF_JASPER_LICENSE__
*
* JasPer License Version 2.0
*
* Copyright (c) 2001-2006 Michael David Adams
* Copyright (c) 1999-2000 Image Power, Inc.
* Copyright (c) 1999-2000 The University of British Columbia
*
* All rights reserved.
*
* Permission is hereby granted, free of charge, to any person (the
* "User") obtaining a copy of this software and associated documentation
* files (the "Software"), to deal in the Software without restriction,
* including without limitation the rights to use, copy, modify, merge,
* publish, distribute, and/or sell copies of the Software, and to permit
* persons to whom the Software is furnished to do so, subject to the
* following conditions:
*
* 1. The above copyright notices and this permission notice (which
* includes the disclaimer below) shall be included in all copies or
* substantial portions of the Software.
*
* 2. The name of a copyright holder shall not be used to endorse or
* promote products derived from the Software without specific prior
* written permission.
*
* THIS DISCLAIMER OF WARRANTY CONSTITUTES AN ESSENTIAL PART OF THIS
* LICENSE. NO USE OF THE SOFTWARE IS AUTHORIZED HEREUNDER EXCEPT UNDER
* THIS DISCLAIMER. THE SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS
* "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
* BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
* PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS. IN NO
* EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, OR ANY SPECIAL
* INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES WHATSOEVER RESULTING
* FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
* NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
* WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. NO ASSURANCES ARE
* PROVIDED BY THE COPYRIGHT HOLDERS THAT THE SOFTWARE DOES NOT INFRINGE
* THE PATENT OR OTHER INTELLECTUAL PROPERTY RIGHTS OF ANY OTHER ENTITY.
* EACH COPYRIGHT HOLDER DISCLAIMS ANY LIABILITY TO THE USER FOR CLAIMS
* BROUGHT BY ANY OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL
* PROPERTY RIGHTS OR OTHERWISE. AS A CONDITION TO EXERCISING THE RIGHTS
* GRANTED HEREUNDER, EACH USER HEREBY ASSUMES SOLE RESPONSIBILITY TO SECURE
* ANY OTHER INTELLECTUAL PROPERTY RIGHTS NEEDED, IF ANY. THE SOFTWARE
* IS NOT FAULT-TOLERANT AND IS NOT INTENDED FOR USE IN MISSION-CRITICAL
* SYSTEMS, SUCH AS THOSE USED IN THE OPERATION OF NUCLEAR FACILITIES,
* AIRCRAFT NAVIGATION OR COMMUNICATION SYSTEMS, AIR TRAFFIC CONTROL
* SYSTEMS, DIRECT LIFE SUPPORT MACHINES, OR WEAPONS SYSTEMS, IN WHICH
* THE FAILURE OF THE SOFTWARE OR SYSTEM COULD LEAD DIRECTLY TO DEATH,
* PERSONAL INJURY, OR SEVERE PHYSICAL OR ENVIRONMENTAL DAMAGE ("HIGH
* RISK ACTIVITIES"). THE COPYRIGHT HOLDERS SPECIFICALLY DISCLAIM ANY
* EXPRESS OR IMPLIED WARRANTY OF FITNESS FOR HIGH RISK ACTIVITIES.
*
* __END_OF_JASPER_LICENSE__
*/
/*
* $Id$
*/
/******************************************************************************\
* Includes
\******************************************************************************/
#include "jpc_util.h"
#include "jpc_fix.h"
#include "jasper/jas_math.h"
#include "jasper/jas_malloc.h"
/******************************************************************************\
* Miscellaneous Functions
\******************************************************************************/
int jpc_atoaf(const char *s, int *numvalues, double **values)
{
static const char delim[] = ", \t\n";
char buf[4096];
int n;
double *vs;
char *cp;
strncpy(buf, s, sizeof(buf));
buf[sizeof(buf) - 1] = '\0';
n = 0;
if (strtok(buf, delim)) {
++n;
while ((cp = strtok(0, delim))) {
if (*cp != '\0') {
++n;
}
}
}
if (n) {
if (!(vs = jas_alloc2(n, sizeof(double)))) {
return -1;
}
strncpy(buf, s, sizeof(buf));
buf[sizeof(buf) - 1] = '\0';
n = 0;
if ((cp = strtok(buf, delim))) {
vs[n] = atof(cp);
++n;
while ((cp = strtok(0, delim))) {
if (*cp != '\0') {
vs[n] = atof(cp);
++n;
}
}
}
} else {
vs = 0;
}
*numvalues = n;
*values = vs;
return 0;
}
jas_seq_t *jpc_seq_upsample(const jas_seq_t *x, int m)
{
jas_seq_t *z;
int i;
if (!(z = jas_seq_create(jas_seq_start(x) * m, (jas_seq_end(x) - 1) * m + 1)))
return 0;
for (i = jas_seq_start(z); i < jas_seq_end(z); i++) {
*jas_seq_getref(z, i) = (!JAS_MOD(i, m)) ? jas_seq_get(x, i / m) :
jpc_inttofix(0);
}
return z;
}
jpc_fix_t jpc_seq_norm(const jas_seq_t *x)
{
jpc_fix_t s;
int i;
s = jpc_inttofix(0);
for (i = jas_seq_start(x); i < jas_seq_end(x); i++) {
s = jpc_fix_add(s, jpc_fix_mul(jas_seq_get(x, i), jas_seq_get(x, i)));
}
return jpc_dbltofix(sqrt(jpc_fixtodbl(s)));
}
jas_seq_t *jpc_seq_conv(const jas_seq_t *x, const jas_seq_t *y)
{
int i;
int j;
int k;
jas_seq_t *z;
jpc_fix_t s;
jpc_fix_t v;
z = jas_seq_create(jas_seq_start(x) + jas_seq_start(y),
jas_seq_end(x) + jas_seq_end(y) - 1);
if (!z)
return NULL;
for (i = jas_seq_start(z); i < jas_seq_end(z); i++) {
s = jpc_inttofix(0);
for (j = jas_seq_start(y); j < jas_seq_end(y); j++) {
k = i - j;
if (k < jas_seq_start(x) || k >= jas_seq_end(x)) {
v = JPC_FIX_ZERO;
} else {
v = jas_seq_get(x, k);
}
s = jpc_fix_add(s, jpc_fix_mul(jas_seq_get(y, j), v));
}
*jas_seq_getref(z, i) = s;
}
return z;
}