352 lines
9.8 KiB
C
352 lines
9.8 KiB
C
/* @(#) Generalised addition of two vasari images. Result (double or float)
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* @(#)depends on inputs
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* @(#) Function im_gfadd() 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 can be of any type
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* @(#) No check for overflow is carried out. If in doubt use im_clip2...
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* @(#) Result at eachpoint is a*in1 + b*in2 + c
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* @(#)
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* @(#) int im_gfadd(a, in1, b, in2, c, out)
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* @(#) double a, b, c;
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* @(#) IMAGE *in1, *in2, *out;
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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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* 15/6/93 J.Cupitt
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* - externs removed
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* - casts added to please ANSI C
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* - includes rationalised
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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., 51 Franklin Street, Fifth Floor, Boston, MA
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02110-1301 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 <math.h>
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#include <vips/vips.h>
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/* uchar char ushort short uint int float double */
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static int array[8][8] = {
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/* uchar */ { 0, 0, 0, 0, 0, 0, 0, 1 },
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/* char */ { 0, 0, 0, 0, 0, 0, 0, 1 },
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/* ushort */ { 0, 0, 0, 0, 0, 0, 0, 1 },
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/* short */ { 0, 0, 0, 0, 0, 0, 0, 1 },
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/* uint */ { 0, 0, 0, 0, 0, 0, 0, 1 },
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/* int */ { 0, 0, 0, 0, 0, 0, 0, 1 },
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/* float */ { 0, 0, 0, 0, 0, 0, 0, 1 },
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/* double */ { 1, 1, 1, 1, 1, 1, 1, 1 }
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};
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#define select_outdouble(IN2, OUT)\
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switch(tmp1->BandFmt) {\
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case IM_BANDFMT_DOUBLE: loop(double, IN2, OUT); break;\
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default: im_error("im_gfadd","Wrong tmp1 format(d)");\
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free( line); return( -1 );\
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}
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#define outfloat_2uchar(IN2, OUT)\
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case IM_BANDFMT_UCHAR: loop(unsigned char, IN2, OUT); break;\
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case IM_BANDFMT_CHAR: loop(signed char, IN2, OUT); break;\
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case IM_BANDFMT_USHORT: loop(unsigned short, IN2, OUT); break;\
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case IM_BANDFMT_SHORT: loop(signed short, IN2, OUT); break;\
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case IM_BANDFMT_UINT: loop(unsigned int, IN2, OUT); break;\
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case IM_BANDFMT_INT: loop(signed int, IN2, OUT); break;\
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case IM_BANDFMT_FLOAT: loop(float, IN2, OUT); break;
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#define outfloat_2char(IN2, OUT)\
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case IM_BANDFMT_CHAR: loop(signed char, IN2, OUT); break;\
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case IM_BANDFMT_USHORT: loop(unsigned short, IN2, OUT); break;\
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case IM_BANDFMT_SHORT: loop(signed short, IN2, OUT); break;\
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case IM_BANDFMT_UINT: loop(unsigned int, IN2, OUT); break;\
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case IM_BANDFMT_INT: loop(signed int, IN2, OUT); break;\
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case IM_BANDFMT_FLOAT: loop(float, IN2, OUT); break;
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#define outfloat_2ushort(IN2, OUT)\
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case IM_BANDFMT_USHORT: loop(unsigned short, IN2, OUT); break;\
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case IM_BANDFMT_SHORT: loop(signed short, IN2, OUT); break;\
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case IM_BANDFMT_UINT: loop(unsigned int, IN2, OUT); break;\
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case IM_BANDFMT_INT: loop(signed int, IN2, OUT); break;\
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case IM_BANDFMT_FLOAT: loop(float, IN2, OUT); break;
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#define outfloat_2short(IN2, OUT)\
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case IM_BANDFMT_SHORT: loop(signed short, IN2, OUT); break;\
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case IM_BANDFMT_UINT: loop(unsigned int, IN2, OUT); break;\
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case IM_BANDFMT_INT: loop(signed int, IN2, OUT); break;\
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case IM_BANDFMT_FLOAT: loop(float, IN2, OUT); break;
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#define outfloat_2uint(IN2, OUT)\
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case IM_BANDFMT_UINT: loop(unsigned int, IN2, OUT); break;\
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case IM_BANDFMT_INT: loop(signed int, IN2, OUT); break;\
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case IM_BANDFMT_FLOAT: loop(float, IN2, OUT); break;
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#define outfloat_2int(IN2, OUT)\
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case IM_BANDFMT_INT: loop(signed int, IN2, OUT); break;\
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case IM_BANDFMT_FLOAT: loop(float, IN2, OUT); break;
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#define outfloat_2float(IN2, OUT)\
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case IM_BANDFMT_FLOAT: loop(float, IN2, OUT); break;
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/**
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* im_gfadd:
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*
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* Deprecated.
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*/
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int im_gfadd(a, in1, b, in2, c, out)
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double a, b, c;
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IMAGE *in1, *in2, *out;
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{
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static int fmt[] = { IM_BANDFMT_FLOAT, IM_BANDFMT_DOUBLE };
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int y, x;
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int first, second, result;
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IMAGE *tmp1, *tmp2;
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PEL *line;
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int os; /* size of a line of output image */
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/* fd, data filename must have been set before the function is called
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* Check whether they are set properly */
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if ((im_iocheck(in1, out) == -1) || (im_iocheck(in2, out) == -1))
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{ im_error("im_gfadd"," im_iocheck failed"); return( -1 ); }
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/* Checks the arguments entered in in and prepares out */
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if ( (in1->Xsize != in2->Xsize) || (in1->Ysize != in2->Ysize) ||
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(in1->Bands != in2->Bands) || (in1->Coding != in2->Coding) )
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{ im_error("im_gfadd"," Input images differ"); return( -1 );}
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if (in1->Coding != IM_CODING_NONE)
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{ im_error("im_gfadd"," images are coded"); return( -1 ); }
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switch(in1->BandFmt) {
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case IM_BANDFMT_UCHAR: first = 0; break;
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case IM_BANDFMT_CHAR: first = 1; break;
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case IM_BANDFMT_USHORT: first = 2; break;
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case IM_BANDFMT_SHORT: first = 3; break;
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case IM_BANDFMT_UINT: first = 4; break;
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case IM_BANDFMT_INT: first = 5; break;
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case IM_BANDFMT_FLOAT: first = 6; break;
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case IM_BANDFMT_DOUBLE: first = 7; break;
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default: im_error("im_gfadd"," 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: second = 0; break;
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case IM_BANDFMT_CHAR: second = 1; break;
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case IM_BANDFMT_USHORT: second = 2; break;
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case IM_BANDFMT_SHORT: second = 3; break;
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case IM_BANDFMT_UINT: second = 4; break;
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case IM_BANDFMT_INT: second = 5; break;
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case IM_BANDFMT_FLOAT: second = 6; break;
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case IM_BANDFMT_DOUBLE: second = 7; break;
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default: im_error("im_gfadd"," unable to accept image2");
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return( -1 );
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}
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/* Define the output */
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result = array[first][second];
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/* Prepare output */
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if ( im_cp_desc(out, in1) == -1)
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{ im_error("im_gfadd"," im_cp_desc failed"); return( -1 ); }
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out->BandFmt = fmt[result];
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if( im_setupout(out) == -1)
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{ im_error("im_gfadd"," im_setupout failed"); return( -1 ); }
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/* Order in1 and in2 */
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if ( first >= second )
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{ tmp1 = in1; tmp2 = in2; }
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else
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{ tmp1 = in2; tmp2 = in1; }
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/* Define what we do for each band element type. */
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#define loop(IN1, IN2, OUT)\
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{ IN1 *input1 = (IN1 *) tmp1->data;\
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IN2 *input2 = (IN2 *) tmp2->data;\
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\
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for (y=0; y <out->Ysize; y++) {\
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OUT *cpline = (OUT*)line;\
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for (x=0; x<os; x++)\
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*cpline++ = (a*((OUT)*input1++) + \
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b*((OUT)*input2++) + c);\
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if (im_writeline(y, out, line) ) {\
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im_error("im_gfadd"," im_writeline failed");\
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free( line);\
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return( -1 );\
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}\
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}\
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}
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os = out->Xsize * out->Bands;
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line = (PEL *) calloc ( (unsigned)os, sizeof(double) );
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if (line == NULL)
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{ im_error("im_gfadd"," unable to calloc"); return( -1 ); }
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switch (out->BandFmt) {
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case IM_BANDFMT_DOUBLE:
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switch (tmp2->BandFmt) {
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case IM_BANDFMT_UCHAR:
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select_outdouble(unsigned char, double);
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break;
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case IM_BANDFMT_CHAR:
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select_outdouble(signed char, double);
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break;
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case IM_BANDFMT_USHORT:
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select_outdouble(unsigned short, double);
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break;
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case IM_BANDFMT_SHORT:
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select_outdouble(signed short, double);
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break;
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case IM_BANDFMT_UINT:
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select_outdouble(unsigned int, double);
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break;
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case IM_BANDFMT_INT:
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select_outdouble(signed int, double);
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break;
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case IM_BANDFMT_FLOAT:
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select_outdouble(float, double);
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break;
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case IM_BANDFMT_DOUBLE:
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select_outdouble(double, double);
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break;
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default:
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im_error("im_gfadd","Wrong tmp2 format(d)");
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free( line );
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return( -1 );
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}
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break;
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case IM_BANDFMT_FLOAT :
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switch (tmp2->BandFmt) {
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case IM_BANDFMT_UCHAR:
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switch (tmp1->BandFmt) {
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outfloat_2uchar(unsigned char, float);
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default:
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im_error("im_gfadd"," Error (a)");
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free( line );
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return( -1 );
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}
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break;
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case IM_BANDFMT_CHAR:
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switch (tmp1->BandFmt) {
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outfloat_2char(signed char, float);
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default:
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im_error("im_gfadd"," Error (b)");
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free( line); return( -1 );
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}
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break;
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case IM_BANDFMT_USHORT:
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switch (tmp1->BandFmt) {
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outfloat_2ushort(unsigned short, float);
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default:
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im_error("im_gfadd"," Error (c)");
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free( line); return( -1 );
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}
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break;
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case IM_BANDFMT_SHORT:
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switch (tmp1->BandFmt) {
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outfloat_2short(signed short, float);
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default:
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im_error("im_gfadd"," Error (d)");
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free( line); return( -1 );
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}
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break;
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case IM_BANDFMT_UINT:
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switch (tmp1->BandFmt) {
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outfloat_2uint(unsigned int, float);
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default:
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im_error("im_gfadd"," Error (e)");
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free( line); return( -1 );
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}
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break;
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case IM_BANDFMT_INT:
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switch (tmp1->BandFmt) {
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outfloat_2int(signed int, float);
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default:
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im_error("im_gfadd"," Error (f)");
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free( line );
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return( -1 );
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}
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break;
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case IM_BANDFMT_FLOAT:
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switch (tmp1->BandFmt) {
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outfloat_2float(float, float);
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default:
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im_error("im_gfadd"," Error (g)");
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free( line );
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return( -1 );
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}
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break;
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default:
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im_error("im_gfadd"," Wrong tmp2 format(f)");
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free( line );
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return( -1 );
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}
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break;
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default:
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im_error("im_gfadd"," Impossible output state");
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free( line );
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return( -1 );
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}
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free( line );
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return( 0 );
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}
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