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Tina5/tina-libs/tina/image/imgPrc_zeropad.c

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  1 /**********
  2  *
  3  * Copyright (c) 2003, Division of Imaging Science and Biomedical Engineering,
  4  * University of Manchester, UK.  All rights reserved.
  5  * 
  6  * Redistribution and use in source and binary forms, with or without modification, 
  7  * are permitted provided that the following conditions are met:
  8  * 
  9  *   . Redistributions of source code must retain the above copyright notice, 
 10  *     this list of conditions and the following disclaimer.
 11  *    
 12  *   . Redistributions in binary form must reproduce the above copyright notice,
 13  *     this list of conditions and the following disclaimer in the documentation 
 14  *     and/or other materials provided with the distribution.
 15  * 
 16  *   . Neither the name of the University of Manchester nor the names of its
 17  *     contributors may be used to endorse or promote products derived from this 
 18  *     software without specific prior written permission.
 19  * 
 20  * 
 21  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 
 22  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 
 23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 
 24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 
 25  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 
 26  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 
 27  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 28  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 
 29  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
 30  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 
 31  * POSSIBILITY OF SUCH DAMAGE.
 32  *
 33  **********
 34  *
 35  * Program :    TINA
 36  * File    :  $Source: /home/tina/cvs/tina-libs/tina/image/imgPrc_zeropad.c,v $
 37  * Date    :  $Date: 2003/09/22 16:09:02 $
 38  * Version :  $Revision: 1.4 $
 39  * CVS Id  :  $Id: imgPrc_zeropad.c,v 1.4 2003/09/22 16:09:02 tony Exp $
 40  *
 41  * Author  : Legacy TINA
 42  *
 43  */
 44 
 45 /** 
 46  *  @file
 47  *  @brief Create a larger image, padded with zeros.
 48  *
 49  * SC's loop macro gone mad!
 50  */
 51 
 52 #include "imgPrc_zeropad.h"
 53 
 54 #if HAVE_CONFIG_H
 55 #include <config.h>
 56 #endif
 57 
 58 #include <math.h>
 59 #include <tina/sys/sysDef.h>
 60 #include <tina/sys/sysPro.h>
 61 #include <tina/math/mathDef.h>
 62 #include <tina/math/mathPro.h>
 63 #include <tina/image/img_GenDef.h>
 64 #include <tina/image/img_GenPro.h>
 65 
 66 
 67 #define FOR_IM(_roi,_row,_col) for ((_row)=(_roi)->ly; (_row)<(_roi)->uy; (_row)++) \
 68                                  for ((_col)=(_roi)->lx; (_col)<(_roi)->ux; (_col)++)
 69 
 70 
 71 Imrect         *im_zeropad(Imrect * im, int auto_pad_depth)
 72 {
 73         Imrect         *new_im = NULL;  /* new image store */
 74         Imregion        roi;    /* new image roi */
 75         int             row, col;       /* loop variables */
 76 
 77         /* create the new and larger image */
 78 
 79         roi = *(im->region);
 80         roi.lx -= auto_pad_depth;
 81         roi.ly -= auto_pad_depth;
 82         roi.ux += auto_pad_depth;
 83         roi.uy += auto_pad_depth;
 84 
 85         new_im = im_alloc(im->height, im->width, &roi, im->vtype);
 86 
 87         switch (im->vtype)
 88         {
 89         case uchar_v:
 90                 FOR_IM(im->region, row, col) IM_UCHAR(new_im, row, col) = IM_UCHAR(im, row, col);
 91                 break;
 92         case short_v:
 93                 FOR_IM(im->region, row, col) IM_SHORT(new_im, row, col) = IM_SHORT(im, row, col);
 94                 break;
 95         case int_v:
 96                 FOR_IM(im->region, row, col) IM_INT(new_im, row, col) = IM_INT(im, row, col);
 97                 break;
 98         case float_v:
 99                 FOR_IM(im->region, row, col) IM_FLOAT(new_im, row, col) = IM_FLOAT(im, row, col);
100                 break;
101         default:
102                 error("im_zeropad: unsupported type", non_fatal);
103                 break;
104         }
105         im_free(im);
106         return (new_im);
107 }
108 

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