128 lines
3.0 KiB
C
128 lines
3.0 KiB
C
/* @(#) Generalised addition of two vasari images using the routines
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* @(#) im_gaddim or im_gfadd
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* @(#) Convention to ease the complilation time.
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* @(#) Function im_gadd() assumes that the both input files
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* @(#) are either memory mapped or in a buffer.
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* @(#) Images must have the same no of bands and must not be complex
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* @(#) No check for overflow is carried out.
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* @(#)
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* @(#) int im_gadd(a, in1, b, in2, c, out)
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* @(#) IMAGE *in1, *in2, *out;
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* @(#) double a, b, c;
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* @(#)
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* @(#) Returns 0 on success and -1 on error
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* @(#)
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*
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* Copyright: 1990, N. Dessipris.
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*
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* Author: Nicos Dessipris
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* Written on: 02/05/1990
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* Modified on:
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*/
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/*
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This file is part of VIPS.
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VIPS is free software; you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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/*
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These files are distributed with VIPS - http://www.vips.ecs.soton.ac.uk
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*/
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif /*HAVE_CONFIG_H*/
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#include <vips/intl.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <assert.h>
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#include <vips/vips.h>
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#ifdef WITH_DMALLOC
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#include <dmalloc.h>
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#endif /*WITH_DMALLOC*/
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extern int im_gfadd();
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extern int im_gaddim();
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/* This function works on either mmaped files or on images in buffer
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*/
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int im_gadd(a, in1, b, in2, c, out)
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IMAGE *in1, *in2, *out;
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double a, b, c;
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{
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int flagint = 0;
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int flagfloat = 0;
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int value = 0;
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switch(in1->BandFmt) {
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case IM_BANDFMT_UCHAR:
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case IM_BANDFMT_CHAR:
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case IM_BANDFMT_USHORT:
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case IM_BANDFMT_SHORT:
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case IM_BANDFMT_UINT:
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case IM_BANDFMT_INT:
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flagint = 1;
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break;
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case IM_BANDFMT_FLOAT:
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case IM_BANDFMT_DOUBLE:
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flagfloat = 1;
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break;
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default: im_error("im_gadd",_("Unable to accept image1"));
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return(-1);
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}
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switch(in2->BandFmt) {
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case IM_BANDFMT_UCHAR:
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case IM_BANDFMT_CHAR:
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case IM_BANDFMT_USHORT:
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case IM_BANDFMT_SHORT:
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case IM_BANDFMT_UINT:
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case IM_BANDFMT_INT:
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flagint = 1;
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break;
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case IM_BANDFMT_FLOAT:
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case IM_BANDFMT_DOUBLE:
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flagfloat = 1;
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break;
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default: im_error("im_gadd",_("Unable to accept image1"));
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return(-1);
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}
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/* Select output routines */
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if (flagfloat == 1)
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{
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value = im_gfadd(a, in1, b, in2, c, out);
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if (value == -1)
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return(-1);
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}
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else if (flagint == 1)
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{
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value = im_gaddim(a, in1, b, in2, c, out);
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if (value == -1)
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return(-1);
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}
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else
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assert( 0 );
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return(0);
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}
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