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195 lines
6.0 KiB
C
195 lines
6.0 KiB
C
/*
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* Copyright (c) 1999-2000 Image Power, Inc. and the University of
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* British Columbia.
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* Copyright (c) 2001-2003 Michael David Adams.
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* All rights reserved.
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*/
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/* __START_OF_JASPER_LICENSE__
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*
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* JasPer License Version 2.0
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*
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* Copyright (c) 2001-2006 Michael David Adams
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* Copyright (c) 1999-2000 Image Power, Inc.
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* Copyright (c) 1999-2000 The University of British Columbia
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*
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* All rights reserved.
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*
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* Permission is hereby granted, free of charge, to any person (the
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* "User") obtaining a copy of this software and associated documentation
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* files (the "Software"), to deal in the Software without restriction,
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* including without limitation the rights to use, copy, modify, merge,
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* publish, distribute, and/or sell copies of the Software, and to permit
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* persons to whom the Software is furnished to do so, subject to the
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* following conditions:
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*
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* 1. The above copyright notices and this permission notice (which
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* includes the disclaimer below) shall be included in all copies or
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* substantial portions of the Software.
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*
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* 2. The name of a copyright holder shall not be used to endorse or
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* promote products derived from the Software without specific prior
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* written permission.
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*
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* THIS DISCLAIMER OF WARRANTY CONSTITUTES AN ESSENTIAL PART OF THIS
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* LICENSE. NO USE OF THE SOFTWARE IS AUTHORIZED HEREUNDER EXCEPT UNDER
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* THIS DISCLAIMER. THE SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS
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* "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
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* BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
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* PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS. IN NO
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* EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, OR ANY SPECIAL
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* INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES WHATSOEVER RESULTING
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* FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
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* NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
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* WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. NO ASSURANCES ARE
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* PROVIDED BY THE COPYRIGHT HOLDERS THAT THE SOFTWARE DOES NOT INFRINGE
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* THE PATENT OR OTHER INTELLECTUAL PROPERTY RIGHTS OF ANY OTHER ENTITY.
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* EACH COPYRIGHT HOLDER DISCLAIMS ANY LIABILITY TO THE USER FOR CLAIMS
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* BROUGHT BY ANY OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL
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* PROPERTY RIGHTS OR OTHERWISE. AS A CONDITION TO EXERCISING THE RIGHTS
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* GRANTED HEREUNDER, EACH USER HEREBY ASSUMES SOLE RESPONSIBILITY TO SECURE
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* ANY OTHER INTELLECTUAL PROPERTY RIGHTS NEEDED, IF ANY. THE SOFTWARE
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* IS NOT FAULT-TOLERANT AND IS NOT INTENDED FOR USE IN MISSION-CRITICAL
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* SYSTEMS, SUCH AS THOSE USED IN THE OPERATION OF NUCLEAR FACILITIES,
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* AIRCRAFT NAVIGATION OR COMMUNICATION SYSTEMS, AIR TRAFFIC CONTROL
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* SYSTEMS, DIRECT LIFE SUPPORT MACHINES, OR WEAPONS SYSTEMS, IN WHICH
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* THE FAILURE OF THE SOFTWARE OR SYSTEM COULD LEAD DIRECTLY TO DEATH,
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* PERSONAL INJURY, OR SEVERE PHYSICAL OR ENVIRONMENTAL DAMAGE ("HIGH
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* RISK ACTIVITIES"). THE COPYRIGHT HOLDERS SPECIFICALLY DISCLAIM ANY
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* EXPRESS OR IMPLIED WARRANTY OF FITNESS FOR HIGH RISK ACTIVITIES.
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*
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* __END_OF_JASPER_LICENSE__
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*/
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/*
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* $Id: jpc_util.c,v 1.2 2008-05-26 09:40:52 vp153 Exp $
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*/
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/******************************************************************************\
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* Includes
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\******************************************************************************/
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#include <assert.h>
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#include <stdio.h>
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#include <string.h>
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#include <math.h>
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#include <stdlib.h>
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#include <stdarg.h>
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#include "jasper/jas_math.h"
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#include "jasper/jas_malloc.h"
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#include "jpc_fix.h"
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#include "jpc_cs.h"
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#include "jpc_flt.h"
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#include "jpc_util.h"
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/******************************************************************************\
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* Miscellaneous Functions
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\******************************************************************************/
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int jpc_atoaf(char *s, int *numvalues, double **values)
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{
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static char delim[] = ", \t\n";
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char buf[4096];
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int n;
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double *vs;
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char *cp;
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strncpy(buf, s, sizeof(buf));
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buf[sizeof(buf) - 1] = '\0';
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n = 0;
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if ((cp = strtok(buf, delim))) {
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++n;
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while ((cp = strtok(0, delim))) {
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if (cp != '\0') {
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++n;
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}
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}
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}
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if (n) {
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if (!(vs = jas_alloc2(n, sizeof(double)))) {
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return -1;
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}
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strncpy(buf, s, sizeof(buf));
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buf[sizeof(buf) - 1] = '\0';
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n = 0;
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if ((cp = strtok(buf, delim))) {
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vs[n] = atof(cp);
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++n;
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while ((cp = strtok(0, delim))) {
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if (cp != '\0') {
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vs[n] = atof(cp);
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++n;
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}
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}
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}
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} else {
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vs = 0;
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}
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*numvalues = n;
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*values = vs;
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return 0;
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}
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jas_seq_t *jpc_seq_upsample(jas_seq_t *x, int m)
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{
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jas_seq_t *z;
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int i;
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if (!(z = jas_seq_create(jas_seq_start(x) * m, (jas_seq_end(x) - 1) * m + 1)))
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return 0;
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for (i = jas_seq_start(z); i < jas_seq_end(z); i++) {
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*jas_seq_getref(z, i) = (!JAS_MOD(i, m)) ? jas_seq_get(x, i / m) :
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jpc_inttofix(0);
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}
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return z;
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}
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jpc_fix_t jpc_seq_norm(jas_seq_t *x)
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{
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jpc_fix_t s;
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int i;
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s = jpc_inttofix(0);
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for (i = jas_seq_start(x); i < jas_seq_end(x); i++) {
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s = jpc_fix_add(s, jpc_fix_mul(jas_seq_get(x, i), jas_seq_get(x, i)));
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}
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return jpc_dbltofix(sqrt(jpc_fixtodbl(s)));
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}
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jas_seq_t *jpc_seq_conv(jas_seq_t *x, jas_seq_t *y)
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{
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int i;
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int j;
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int k;
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jas_seq_t *z;
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jpc_fix_t s;
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jpc_fix_t v;
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z = jas_seq_create(jas_seq_start(x) + jas_seq_start(y),
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jas_seq_end(x) + jas_seq_end(y) - 1);
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assert(z);
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for (i = jas_seq_start(z); i < jas_seq_end(z); i++) {
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s = jpc_inttofix(0);
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for (j = jas_seq_start(y); j < jas_seq_end(y); j++) {
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k = i - j;
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if (k < jas_seq_start(x) || k >= jas_seq_end(x)) {
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v = JPC_FIX_ZERO;
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} else {
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v = jas_seq_get(x, k);
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}
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s = jpc_fix_add(s, jpc_fix_mul(jas_seq_get(y, j), v));
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}
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*jas_seq_getref(z, i) = s;
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}
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return z;
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}
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