146 lines
3.2 KiB
C
146 lines
3.2 KiB
C
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/*
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...............................
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.redimensionnement d'une image.
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...............................
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "tga_outils.h"
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/*::------------------------------------------------------------------::*/
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#define HALF_SIZE 1
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#define DOUBLE_SIZE 2
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#define PERCENT 3
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#define NEWSIZE 4
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mot_clef mots_clef[] =
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{
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{ "half", HALF_SIZE, "f", "0:crude 1:interpolate" },
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{ "double", DOUBLE_SIZE, "f", "" },
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{ "percent", PERCENT, "dii", "%%size, method, 0" },
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{ "newsize", NEWSIZE, "iii", "newW newH method" }
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};
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/*::------------------------------------------------------------------::*/
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void usage(int flag)
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{
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fprintf(stderr, "* Tga Resize v 0.0.13 [%s] %s\n",
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TGA_OUTILS_VERSION, TGA_OUTILS_COPYLEFT);
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fprintf(stderr, "usage:\n");
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fprintf(stderr, "\ttga_resize source.tga methode resultat.tga [params]\n");
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if (flag)
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liste_mots_clefs(mots_clef, 42);
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else
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Image_print_version(0);
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exit(5);
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}
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/*::------------------------------------------------------------------::*/
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/*
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* argv[1] source.tga
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* argv[2] m<EFBFBD>thode
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* argv[3] destination.tga
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*/
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#define FIRST_PARAM 4
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int main(int argc, char *argv[])
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{
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Image_Desc *src, *dst;
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int foo, idx;
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int commande, nbargs, interpol;
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double scale, scaleX, scaleY;
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int newW, newH;
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dump_command_line(argc, argv, 0);
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if ( argc==2 && !strcmp(argv[1], "list") ) usage(1);
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if ( argc < 4) usage(0);
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/*
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* rechercher le mot clef dans la table
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*/
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idx = cherche_mot_clef(argv[2], mots_clef, &commande, &nbargs);
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if (idx < 0)
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{
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fprintf(stderr, "keyword %s unknow\n", argv[1]);
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exit(5);
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}
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/*
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* d<EFBFBD>codage des param<EFBFBD>tres
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*/
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foo = parse_parametres(argc, argv, mots_clef[idx].ptypes, FIRST_PARAM);
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#if DEBUG_LEVEL
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fprintf(stderr, "tga_resize: ret parse parameters = %d\n", foo);
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#endif
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if ((src = Image_TGA_alloc_load(argv[1]))==NULL)
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{
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fprintf(stderr, "tga_resize: can't load '%s'\n", argv[1]);
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exit(5);
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}
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dst = NULL; /* secure the default case */
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switch (commande)
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{
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case HALF_SIZE:
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if ( (dst=Image_MakeHalfSize(src, GFP(0))) == NULL)
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{
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fprintf(stderr, "tga_resize: half: fatal error\n");
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exit(1);
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}
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foo = 0;
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break;
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case DOUBLE_SIZE:
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if ( (dst=Image_MakeDoubleSize(src, GFP(0))) == NULL)
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{
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fprintf(stderr, "tga_resize: double: fatal error\n");
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exit(1);
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}
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foo = 0;
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break;
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case PERCENT:
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scale = GDP(0) / 100.0;
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interpol = GIP(1);
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#if DEBUG_LEVEL
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printf(" scale = %f\n", scale);
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printf(" interpol = %d\n", interpol);
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#endif
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if ((dst = Image_new_scale(src, scale, scale, interpol))==NULL)
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{
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fprintf(stderr, "tga_resize: percent: fatal error\n");
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exit(1);
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}
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break;
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case NEWSIZE:
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newW = GIP(0);
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newH = GIP(1);
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printf("new size: %d x %d\n", newW, newH);
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scaleX = ((double)newW / (double)src->width);
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scaleY = ((double)newH / (double)src->height);
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printf("scales: X %f y %f\n", scaleX, scaleY);
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if ((dst = Image_new_scale(src, scaleX, scaleY, GIP(2)))==NULL)
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{
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fprintf(stderr, "tga_resize: newsize: fatal error\n");
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exit(1);
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}
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break;
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}
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/*
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* sauvons vite ce precieux resultat
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*/
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if (dst != NULL)
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foo = Image_TGA_save(argv[3], dst, 0);
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return 0;
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}
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/*::------------------------------------------------------------------::*/
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