win/gem/xpm2img.c

   1 /* aNetHack 0.0.1       xpm2img.c       $ANH-Date: 1432512809 2015/05/25 00:13:29 $  $ANH-Branch: master $:$ANH-Revision: 1.7 $ */
   2 /*   Copyright (c) Christian Bressler 2002                 */
   3 /*   aNetHack may be freely redistributed.  See license for details. */
   4 /* This is mainly a reworked tile2bmp.c + xpm2iff.c -- Marvin */
   5 #include <stdio.h>
   6 #include <stdlib.h>
   7 #include <ctype.h>
   8 #include "bitmfile.h"
   9 #define TRUE 1
  10 #define FALSE 0
  11 void get_color(unsigned int colind, struct RGB *rgb);
  12 void get_pixel(int x, int y, unsigned int *colind);
  13 char *xpmgetline();
  14 unsigned int **Bild_daten;
  15 /* translation table from xpm characters to RGB and colormap slots */
  16 struct Ttable {
  17     char flag;
  18     struct RGB col;
  19     int slot; /* output colortable index */
  20 } ttable[256];
  21 struct RGB *ColorMap;
  22 int num_colors = 0;
  23 int width = 0, height = 0;
  24 int initflag;
  25 FILE *fp;
  26 int
  27 main(argc, argv)
  28 int argc;
  29 char *argv[];
  30 {
  31     int i;
  32     int row, col, planeno;
  33     int farben, planes;
  34     if (argc != 3) {
  35         fprintf(stderr, "usage: tile2img infile.xpm outfile.img\n");
  36         exit(EXIT_FAILURE);
  37     }
  38     initflag = 0;
  39     fp = fopen(argv[2], "wb");
  40     if (!fp) {
  41         printf("Error creating IMG-file %s, aborting.\n", argv[2]);
  42         exit(EXIT_FAILURE);
  43     }
  44     fclose(fp);
  45     if (fopen_xpm_file(argv[1], "r") != TRUE) {
  46         printf("Error reading xpm-file %s, aborting.\n", argv[1]);
  47         exit(EXIT_FAILURE);
  48     }
  49     Bild_daten =
  50         (unsigned int **) malloc((long) height * sizeof(unsigned int *));
  51     for (i = 0; i < height; i++)
  52         Bild_daten[i] =
  53             (unsigned int *) malloc((long) width * sizeof(unsigned int));
  54     for (row = 0; row < height; row++) {
  55         char *xb = xpmgetline();
  56         int plane_offset;
  57         if (xb == 0) {
  58             printf("Error to few lines in xpm-file %s, aborting.\n", argv[1]);
  59             exit(EXIT_FAILURE);
  60         }
  61         for (col = 0; col < width; col++) {
  62             int color = xb[col];
  63             if (!ttable[color].flag)
  64                 fprintf(stderr, "Bad image data\n");
  65             Bild_daten[row][col] = ttable[color].slot;
  66         }
  67     }
  68     if (num_colors > 256) {
  69         fprintf(stderr, "ERROR: zuviele Farben\n");
  70         exit(EXIT_FAILURE);
  71     } else if (num_colors > 16) {
  72         farben = 256;
  73         planes = 8;
  74     } else if (num_colors > 2) {
  75         farben = 16;
  76         planes = 4;
  77     } else {
  78         farben = 2;
  79         planes = 1;
  80     }
  81     bitmap_to_file(XIMG, width, height, 372, 372, planes, farben, argv[2],
  82                    get_color, get_pixel);
  83     exit(EXIT_SUCCESS);
  84     /*NOTREACHED*/
  85     return 0;
  86 }
  87 void
  88 get_color(unsigned int colind, struct RGB *rgb)
  89 {
  90     rgb->r = (1000L * (long) ColorMap[colind].r) / 0xFF;
  91     rgb->g = (1000L * (long) ColorMap[colind].g) / 0xFF;
  92     rgb->b = (1000L * (long) ColorMap[colind].b) / 0xFF;
  93 }
  94 void
  95 get_pixel(int x, int y, unsigned int *colind)
  96 {
  97     *colind = Bild_daten[y][x];
  98 }
  99 FILE *xpmfh = 0;
 100 char initbuf[200];
 101 char *xpmbuf = initbuf;
 102 /* version 1.  Reads the raw xpm file, NOT the compiled version.  This is
 103  * not a particularly good idea but I don't have time to do the right thing
 104  * at this point, even if I was absolutely sure what that was. */
 105 fopen_xpm_file(const char *fn, const char *mode)
 106 {
 107     int temp;
 108     char *xb;
 109     if (strcmp(mode, "r"))
 110         return FALSE; /* no choice now */
 111     if (xpmfh)
 112         return FALSE; /* one file at a time */
 113     xpmfh = fopen(fn, mode);
 114     if (!xpmfh)
 115         return FALSE; /* I'm hard to please */
 116                       /* read the header */
 117     xb = xpmgetline();
 118     if (xb == 0)
 119         return FALSE;
 120     if (4 != sscanf(xb, "%d %d %d %d", &width, &height, &num_colors, &temp))
 121         return FALSE; /* bad header */
 122                       /* replace the original buffer with one big enough for
 123                        * the real data
 124                        */
 125     /* XXX */
 126     xpmbuf = malloc(width * 2);
 127     if (!xpmbuf) {
 128         fprintf(stderr, "ERROR: Can't allocate line buffer\n");
 129         exit(1);
 130     }
 131     if (temp != 1)
 132         return FALSE; /* limitation of this code */
 133     {
 134         /* read the colormap and translation table */
 135         int ccount = -1;
 136         ColorMap =
 137             (struct RGB *) malloc((long) num_colors * sizeof(struct RGB));
 138         while (ccount++ < (num_colors - 1)) {
 139             char index;
 140             int r, g, b;
 141             xb = xpmgetline();
 142             if (xb == 0)
 143                 return FALSE;
 144             if (4 != sscanf(xb, "%c c #%2x%2x%2x", &index, &r, &g, &b)) {
 145                 fprintf(stderr, "Bad color entry: %s\n", xb);
 146                 return FALSE;
 147             }
 148             ttable[index].flag = 1; /* this color is valid */
 149             ttable[index].col.r = r;
 150             ttable[index].col.g = g;
 151             ttable[index].col.b = b;
 152             ttable[index].slot = ccount;
 153             ColorMap[ccount].r = r;
 154             ColorMap[ccount].g = g;
 155             ColorMap[ccount].b = b;
 156         }
 157     }
 158     return TRUE;
 159 }
 160 /* This deserves better.  Don't read it too closely - you'll get ill. */
 161 #define bufsz 2048
 162 char buf[bufsz];
 163 char *
 164 xpmgetline()
 165 {
 166     char *bp;
 167     do {
 168         if (fgets(buf, bufsz, xpmfh) == 0)
 169             return 0;
 170     } while (buf[0] != '"');
 171     /* strip off the trailing <",> if any */
 172     for (bp = buf; *bp; bp++)
 173         ;
 174     bp--;
 175     while (isspace(*bp))
 176         bp--;
 177     if (*bp == ',')
 178         bp--;
 179     if (*bp == '"')
 180         bp--;
 181     bp++;
 182     *bp = '\0';
 183     return &buf[1];
 184 }