/*

 * 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"

#include "jasper/jas_string.h"

#include <assert.h>

#include <string.h>

#include <math.h>

#include <stdlib.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;

  char* saveptr = 0;

  if ((cp = jas_strtok(buf, delim, &saveptr))) {

    ++n;

    while ((cp = jas_strtok(0, delim, &saveptr))) {

      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;

    saveptr = 0;

    if ((cp = jas_strtok(buf, delim, &saveptr))) {

      vs[n] = atof(cp);

      ++n;

      while ((cp = jas_strtok(0, delim, &saveptr))) {

        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;

}