sys/amiga/xpm2iff.c

   1 /* aNetHack 0.0.1       xpm2iff.c       $ANH-Date: 1432512795 2015/05/25 00:13:15 $  $ANH-Branch: master $:$ANH-Revision: 1.7 $ */
   2 /*      Copyright (c) 1995 by Gregg Wonderly, Naperville, Illinois */
   3 /* aNetHack may be freely redistributed.  See license for details. */
   4
   5 #include <stdlib.h>
   6
   7 #include "config.h"
   8 #include "tile.h"
   9
  10 #include <dos/dos.h>
  11 #include <dos/dos.h>
  12 #include <dos/dosextens.h>
  13 #include <graphics/gfx.h>
  14 #include <graphics/gfxbase.h>
  15 #include <graphics/view.h>
  16 #include <libraries/iffparse.h>
  17 #include <libraries/dos.h>
  18 #ifndef _DCC
  19 #include <proto/iffparse.h>
  20 #include <proto/dos.h>
  21 #include <proto/exec.h>
  22 #endif
  23
  24 struct xpmscreen {
  25     int Width;
  26     int Height;
  27     int Colors;
  28     int ColorResolution;
  29     int Background;
  30     int AspectRatio;
  31     int Interlace;
  32     int BytesPerRow;
  33 } XpmScreen;
  34
  35 /* translation table from xpm characters to RGB and colormap slots */
  36 struct Ttable {
  37     char flag;
  38     char r, g, b;
  39     int slot; /* output colortable index */
  40 } ttable[256];
  41
  42 pixval ColorMap[3][MAXCOLORMAPSIZE];
  43 int colorsinmap;
  44
  45 /*
  46  * We are using a hybrid form of our own design which we call a BMAP (for
  47  * bitmap) form.  It is an ILBM with the bitmaps already deinterleaved,
  48  * completely uncompressed.
  49  * This speeds the loading of the images from the games point of view because
  50  * it
  51  * does not have to deinterleave and uncompress them.
  52  */
  53 #define ID_BMAP MAKE_ID('B', 'M', 'A', 'P') /* instead of ILBM */
  54 #define ID_BMHD MAKE_ID('B', 'M', 'H', 'D') /* Same as ILBM */
  55 #define ID_CAMG MAKE_ID('C', 'A', 'M', 'G') /* Same as ILBM */
  56 #define ID_CMAP MAKE_ID('C', 'M', 'A', 'P') /* Same as ILBM */
  57 #define ID_PDAT                                                             \
  58     MAKE_ID('P', 'D', 'A', 'T')             /* Extra data describing plane  \
  59                                              * size due to graphics.library \
  60                                              * rounding requirements.       \
  61                                              */
  62 #define ID_PLNE MAKE_ID('P', 'L', 'N', 'E') /* The planes of the image */
  63
  64 int nplanes;
  65
  66 /* BMHD from IFF documentation */
  67 typedef struct {
  68     UWORD w, h;
  69     WORD x, y;
  70     UBYTE nPlanes;
  71     UBYTE masking;
  72     UBYTE compression;
  73     UBYTE reserved1;
  74     UWORD transparentColor;
  75     UBYTE xAspect, yAspect;
  76     WORD pageWidth, pageHeight;
  77 } BitMapHeader;
  78
  79 typedef struct {
  80     UBYTE r, g, b;
  81 } AmiColorMap;
  82
  83 pixel pixels[TILE_Y][TILE_X];
  84 AmiColorMap *cmap;
  85
  86 void
  87 error(char *str)
  88 {
  89     fprintf(stderr, "ERROR: %s\n", str);
  90 }
  91
  92 char **planes;
  93
  94 main(int argc, char **argv)
  95 {
  96     int colors;
  97     struct {
  98         long nplanes;
  99         long pbytes;
 100         long across;
 101         long down;
 102         long npics;
 103         long xsize;
 104         long ysize;
 105     } pdat;
 106     long pbytes; /* Bytes of data in a plane */
 107     int i, cnt;
 108     BitMapHeader bmhd;
 109     struct IFFHandle *iff;
 110     long camg = HIRES | LACE;
 111     int tiles = 0;
 112     int index;
 113
 114 #if defined(_DCC) || defined(__GNUC__)
 115     IFFParseBase = OpenLibrary("iffparse.library", 0);
 116     if (!IFFParseBase) {
 117         error("unable to open iffparse.library");
 118         exit(1);
 119     }
 120 #endif
 121
 122     if (fopen_xpm_file(argv[1], "r") != TRUE) {
 123         perror(argv[1]);
 124         return (1);
 125     }
 126
 127     nplanes = 0;
 128     i = XpmScreen.Colors - 1;
 129     while (i != 0) {
 130         nplanes++;
 131         i >>= 1;
 132     }
 133
 134     planes = malloc(nplanes * sizeof(char *));
 135     if (planes == 0) {
 136         error("can not allocate planes pointer");
 137         exit(1);
 138     }
 139
 140     XpmScreen.BytesPerRow = ((XpmScreen.Width + 15) / 16) * 2;
 141     pbytes = XpmScreen.BytesPerRow * XpmScreen.Height;
 142     for (i = 0; i < nplanes; ++i) {
 143         planes[i] = malloc(pbytes);
 144         if (planes[i] == 0) {
 145             error("can not allocate planes pointer");
 146             exit(1);
 147         }
 148         memset(planes[i], 0, pbytes);
 149     }
 150
 151     iff = AllocIFF();
 152     if (!iff) {
 153         error("Can not allocate IFFHandle");
 154         return (1);
 155     }
 156
 157     iff->iff_Stream = Open(argv[2], MODE_NEWFILE);
 158     if (!iff->iff_Stream) {
 159         error("Can not open output file");
 160         return (1);
 161     }
 162
 163     InitIFFasDOS(iff);
 164     OpenIFF(iff, IFFF_WRITE);
 165
 166     PushChunk(iff, ID_BMAP, ID_FORM, IFFSIZE_UNKNOWN);
 167
 168     bmhd.w = XpmScreen.Width;
 169     bmhd.h = XpmScreen.Height;
 170     bmhd.x = 0;
 171     bmhd.y = 0;
 172     bmhd.nPlanes = nplanes;
 173     bmhd.masking = 0;
 174     bmhd.compression = 0;
 175     bmhd.reserved1 = 0;
 176     bmhd.transparentColor = 0;
 177     bmhd.xAspect = 100;
 178     bmhd.yAspect = 100;
 179     bmhd.pageWidth = 0;  /* not needed for this program */
 180     bmhd.pageHeight = 0; /* not needed for this program */
 181
 182     PushChunk(iff, ID_BMAP, ID_BMHD, sizeof(bmhd));
 183     WriteChunkBytes(iff, &bmhd, sizeof(bmhd));
 184     PopChunk(iff);
 185
 186     PushChunk(iff, ID_BMAP, ID_CAMG, sizeof(camg));
 187     WriteChunkBytes(iff, &camg, sizeof(camg));
 188     PopChunk(iff);
 189
 190 #define SCALE(x) (x)
 191     cmap = malloc((colors = (1L << nplanes)) * sizeof(AmiColorMap));
 192     if (cmap == 0) {
 193         error("Can't allocate color map");
 194         exit(1);
 195     }
 196     for (index = 0; index < 256; index++) {
 197         if (ttable[index].flag) {
 198             cmap[ttable[index].slot].r = SCALE(ttable[index].r);
 199             cmap[ttable[index].slot].g = SCALE(ttable[index].g);
 200             cmap[ttable[index].slot].b = SCALE(ttable[index].b);
 201         }
 202     }
 203 #undef SCALE
 204
 205     PushChunk(iff, ID_BMAP, ID_CMAP, IFFSIZE_UNKNOWN);
 206     WriteChunkBytes(iff, cmap, colors * sizeof(*cmap));
 207     PopChunk(iff);
 208
 209     conv_image();
 210
 211     pdat.nplanes = nplanes;
 212     pdat.pbytes = pbytes;
 213     pdat.xsize = XpmScreen.Width;
 214     pdat.ysize = XpmScreen.Height;
 215     pdat.across = 0;
 216     pdat.down = 0;
 217     pdat.npics = 1;
 218
 219     PushChunk(iff, ID_BMAP, ID_PDAT, IFFSIZE_UNKNOWN);
 220     WriteChunkBytes(iff, &pdat, sizeof(pdat));
 221     PopChunk(iff);
 222
 223     PushChunk(iff, ID_BMAP, ID_PLNE, IFFSIZE_UNKNOWN);
 224     for (i = 0; i < nplanes; ++i)
 225         WriteChunkBytes(iff, planes[i], pbytes);
 226     PopChunk(iff);
 227
 228     CloseIFF(iff);
 229     Close(iff->iff_Stream);
 230     FreeIFF(iff);
 231
 232 #if defined(_DCC) || defined(__GNUC__)
 233     CloseLibrary(IFFParseBase);
 234 #endif
 235     exit(0);
 236 }
 237
 238 #define SETBIT(Plane, Plane_offset, Col, Value)                          \
 239     if (Value) {                                                         \
 240         planes[Plane][Plane_offset + (Col / 8)] |= 1 << (7 - (Col & 7)); \
 241     }
 242
 243 conv_image()
 244 {
 245     int row, col, planeno;
 246
 247     for (row = 0; row < XpmScreen.Height; row++) {
 248         char *xb = xpmgetline();
 249         int plane_offset;
 250         if (xb == 0)
 251             return;
 252         plane_offset = row * XpmScreen.BytesPerRow;
 253         for (col = 0; col < XpmScreen.Width; col++) {
 254             int slot;
 255             int color = xb[col];
 256             if (!ttable[color].flag) {
 257                 fprintf(stderr, "Bad image data\n");
 258             }
 259             slot = ttable[color].slot;
 260             for (planeno = 0; planeno < nplanes; planeno++) {
 261                 SETBIT(planeno, plane_offset, col, slot & (1 << planeno));
 262             }
 263         }
 264     }
 265 }
 266
 267 long *
 268 alloc(unsigned int n)
 269 {
 270     long *ret = malloc(n);
 271     if (!ret) {
 272         error("Can't allocate memory");
 273         exit(1);
 274     }
 275     return (ret);
 276 }
 277
 278 FILE *xpmfh = 0;
 279 char initbuf[200];
 280 char *xpmbuf = initbuf;
 281
 282 /* version 1.  Reads the raw xpm file, NOT the compiled version.  This is
 283  * not a particularly good idea but I don't have time to do the right thing
 284  * at this point, even if I was absolutely sure what that was. */
 285 fopen_xpm_file(const char *fn, const char *mode)
 286 {
 287     int temp;
 288     char *xb;
 289     if (strcmp(mode, "r"))
 290         return FALSE; /* no choice now */
 291     if (xpmfh)
 292         return FALSE; /* one file at a time */
 293     xpmfh = fopen(fn, mode);
 294     if (!xpmfh)
 295         return FALSE; /* I'm hard to please */
 296
 297     /* read the header */
 298     xb = xpmgetline();
 299     if (xb == 0)
 300         return FALSE;
 301     if (4 != sscanf(xb, "%d %d %d %d", &XpmScreen.Width, &XpmScreen.Height,
 302                     &XpmScreen.Colors, &temp))
 303         return FALSE; /* bad header */
 304                       /* replace the original buffer with one big enough for
 305                        * the real data
 306                        */
 307     /* XXX */
 308     xpmbuf = malloc(XpmScreen.Width * 2);
 309     if (!xpmbuf) {
 310         error("Can't allocate line buffer");
 311         exit(1);
 312     }
 313     if (temp != 1)
 314         return FALSE; /* limitation of this code */
 315
 316     {
 317         /* read the colormap and translation table */
 318         int ccount = -1;
 319         while (ccount++ < (XpmScreen.Colors - 1)) {
 320             char index;
 321             int r, g, b;
 322             xb = xpmgetline();
 323             if (xb == 0)
 324                 return FALSE;
 325             if (4 != sscanf(xb, "%c c #%2x%2x%2x", &index, &r, &g, &b)) {
 326                 fprintf(stderr, "Bad color entry: %s\n", xb);
 327                 return FALSE;
 328             }
 329             ttable[index].flag = 1; /* this color is valid */
 330             ttable[index].r = r;
 331             ttable[index].g = g;
 332             ttable[index].b = b;
 333             ttable[index].slot = ccount;
 334         }
 335     }
 336     return TRUE;
 337 }
 338
 339 /* This deserves better.  Don't read it too closely - you'll get ill. */
 340 #define bufsz 2048
 341 char buf[bufsz];
 342 xpmgetline()
 343 {
 344     char *bp;
 345     do {
 346         if (fgets(buf, bufsz, xpmfh) == 0)
 347             return 0;
 348     } while (buf[0] != '"');
 349     /* strip off the trailing <",> if any */
 350     for (bp = buf; *bp; bp++)
 351         ;
 352     bp--;
 353     while (isspace(*bp))
 354         bp--;
 355     if (*bp == ',')
 356         bp--;
 357     if (*bp == '"')
 358         bp--;
 359     bp++;
 360     *bp = '\0';
 361
 362     return &buf[1];
 363 }