tools/sfnt2fnt.c

   1 /*
   2  * sfnttofnt.  Bitmap only ttf to Window fnt file converter
   3  *
   4  * Copyright 2004 Huw Davies
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  */
  20
  21 #include "config.h"
  22
  23 #include <assert.h>
  24 #include <ctype.h>
  25 #include <stdio.h>
  26 #include <stdlib.h>
  27
  28 #ifdef HAVE_FREETYPE
  29
  30 #ifdef HAVE_FT2BUILD_H
  31 #include <ft2build.h>
  32 #endif
  33 #include FT_FREETYPE_H
  34 #include FT_SFNT_NAMES_H
  35 #include FT_TRUETYPE_TABLES_H
  36
  37 #include "wine/unicode.h"
  38 #include "wingdi.h"
  39
  40 #pragma pack(1)
  41
  42 typedef struct
  43 {
  44     WORD dfVersion;
  45     DWORD dfSize;
  46     char dfCopyright[60];
  47 } FNT_HEADER;
  48
  49 typedef struct
  50 {
  51     INT16 dfType;
  52     INT16 dfPoints;
  53     INT16 dfVertRes;
  54     INT16 dfHorizRes;
  55     INT16 dfAscent;
  56     INT16 dfInternalLeading;
  57     INT16 dfExternalLeading;
  58     CHAR  dfItalic;
  59     CHAR  dfUnderline;
  60     CHAR  dfStrikeOut;
  61     INT16 dfWeight;
  62     BYTE  dfCharSet;
  63     INT16 dfPixWidth;
  64     INT16 dfPixHeight;
  65     CHAR  dfPitchAndFamily;
  66     INT16 dfAvgWidth;
  67     INT16 dfMaxWidth;
  68     CHAR  dfFirstChar;
  69     CHAR  dfLastChar;
  70     CHAR  dfDefaultChar;
  71     CHAR  dfBreakChar;
  72     INT16 dfWidthBytes;
  73     LONG  dfDevice;
  74     LONG  dfFace;
  75     LONG  dfBitsPointer;
  76     LONG  dfBitsOffset;
  77     CHAR  dfReserved;
  78     /* Fields, introduced for Windows 3.x fonts */
  79     LONG  dfFlags;
  80     INT16 dfAspace;
  81     INT16 dfBspace;
  82     INT16 dfCspace;
  83     LONG  dfColorPointer;
  84     LONG  dfReserved1[4];
  85 } FONTINFO16, *LPFONTINFO16;
  86
  87 typedef struct {
  88     WORD width;
  89     DWORD offset;
  90 } CHAR_TABLE_ENTRY;
  91
  92
  93 void usage(char **argv)
  94 {
  95     fprintf(stderr, "%s foo.ttf ppem enc dpi def_char avg_width\n", argv[0]);
  96     return;
  97 }
  98
  99 int lookup_charset(int enc)
 100 {
 101     /* FIXME: make winelib app and use TranslateCharsetInfo */
 102     switch(enc) {
 103     case 1250:
 104         return EE_CHARSET;
 105     case 1251:
 106         return RUSSIAN_CHARSET;
 107     case 1252:
 108         return ANSI_CHARSET;
 109     case 1253:
 110         return GREEK_CHARSET;
 111     case 1254:
 112         return TURKISH_CHARSET;
 113     case 1255:
 114         return HEBREW_CHARSET;
 115     case 1256:
 116         return ARABIC_CHARSET;
 117     case 1257:
 118         return BALTIC_CHARSET;
 119     case 1258:
 120         return VIETNAMESE_CHARSET;
 121     case 437:
 122     case 737:
 123     case 775:
 124     case 850:
 125     case 852:
 126     case 855:
 127     case 857:
 128     case 860:
 129     case 861:
 130     case 862:
 131     case 863:
 132     case 864:
 133     case 865:
 134     case 866:
 135     case 869:
 136         return OEM_CHARSET;
 137     case 874:
 138         return THAI_CHARSET;
 139     case 932:
 140         return SHIFTJIS_CHARSET;
 141     case 936:
 142         return GB2312_CHARSET;
 143     case 949:
 144         return HANGUL_CHARSET;
 145     case 950:
 146         return CHINESEBIG5_CHARSET;
 147     }
 148     fprintf(stderr, "Unknown encoding %d - using OEM_CHARSET\n", enc);
 149
 150     return OEM_CHARSET;
 151 }
 152
 153 static void fill_fontinfo(FT_Face face, int enc, FILE *fp, int dpi, unsigned char def_char, int avg_width)
 154 {
 155     int ascent, il, ppem, descent, width_bytes = 0, space_size, max_width = 0;
 156     FNT_HEADER hdr;
 157     FONTINFO16 fi;
 158     BYTE left_byte, right_byte, byte;
 159     DWORD start;
 160     CHAR_TABLE_ENTRY *dfCharTable;
 161     int i, x, y, x_off, x_end, first_char;
 162     FT_Int gi;
 163     int num_names;
 164     const union cptable *cptable;
 165     FT_SfntName sfntname;
 166     TT_OS2 *os2;
 167     cptable = wine_cp_get_table(enc);
 168     if(!cptable) {
 169         fprintf(stderr, "Can't find codepage %d\n", enc);
 170         exit(0);
 171     }
 172     if(cptable->info.char_size != 1) {
 173         fprintf(stderr, "Can't cope with double byte codepages\n");
 174         exit(0);
 175     }
 176
 177     ppem = face->size->metrics.y_ppem;
 178     start = sizeof(FNT_HEADER) + sizeof(FONTINFO16);
 179
 180     if(FT_Load_Char(face, 0xc5, FT_LOAD_DEFAULT)) {
 181         fprintf(stderr, "Can't find Aring\n");
 182         exit(0);
 183     }
 184     ascent = face->glyph->metrics.height >> 6;
 185     descent = ppem - ascent;
 186     if(FT_Load_Char(face, 'M', FT_LOAD_DEFAULT)) {
 187         fprintf(stderr, "Can't find M\n");
 188         exit(0);
 189     }
 190     il = ascent - (face->glyph->metrics.height >> 6);
 191
 192     /* Hack: Courier has no internal leading, so we do likewise */
 193     if(!strcmp(face->family_name, "Wine Courier"))
 194         il = 0;
 195
 196     first_char = FT_Get_First_Char(face, &gi);
 197     if(first_char == 0xd) /* fontforge's first glyph is 0xd, we'll catch this and skip it */
 198         first_char = FT_Get_Next_Char(face, first_char, &gi);
 199
 200     dfCharTable = malloc((255 + 3) * sizeof(*dfCharTable));
 201     memset(&fi, 0, sizeof(fi));
 202     fi.dfFirstChar = first_char;
 203     fi.dfLastChar = 0xff;
 204     start += ((unsigned char)fi.dfLastChar - (unsigned char)fi.dfFirstChar + 3 ) * sizeof(*dfCharTable);
 205
 206     num_names = FT_Get_Sfnt_Name_Count(face);
 207     for(i = 0; i <num_names; i++) {
 208         FT_Get_Sfnt_Name(face, i, &sfntname);
 209         if(sfntname.platform_id == 1 && sfntname.encoding_id == 0 &&
 210            sfntname.language_id == 0 && sfntname.name_id == 0) {
 211             size_t len = min( sfntname.string_len, sizeof(hdr.dfCopyright)-1 );
 212             memcpy(hdr.dfCopyright, sfntname.string, len);
 213             hdr.dfCopyright[len] = 0;
 214         }
 215     }
 216
 217     os2 = FT_Get_Sfnt_Table(face, ft_sfnt_os2);
 218     for(i = first_char; i < 0x100; i++) {
 219         gi = FT_Get_Char_Index(face, cptable->sbcs.cp2uni[i]);
 220         if(gi == 0)
 221             fprintf(stderr, "Missing glyph for char %04x\n", cptable->sbcs.cp2uni[i]);
 222         if(FT_Load_Char(face, cptable->sbcs.cp2uni[i], FT_LOAD_DEFAULT)) {
 223             fprintf(stderr, "error loading char %d - bad news!\n", i);
 224             continue;
 225         }
 226         dfCharTable[i].width = face->glyph->metrics.horiAdvance >> 6;
 227         dfCharTable[i].offset = start + (width_bytes * ppem);
 228         width_bytes += ((face->glyph->metrics.horiAdvance >> 6) + 7) >> 3;
 229         if(max_width < (face->glyph->metrics.horiAdvance >> 6))
 230             max_width = face->glyph->metrics.horiAdvance >> 6;
 231     }
 232     /* space */
 233     space_size = (ppem + 3) / 4;
 234     dfCharTable[i].width = space_size;
 235     dfCharTable[i].offset = start + (width_bytes * ppem);
 236     width_bytes += (space_size + 7) >> 3;
 237     /* sentinel */
 238     dfCharTable[++i].width = 0;
 239     dfCharTable[i].offset = start + (width_bytes * ppem);
 240
 241     fi.dfType = 0;
 242     fi.dfPoints = ((ppem - il) * 72 + dpi/2) / dpi;
 243     fi.dfVertRes = dpi;
 244     fi.dfHorizRes = dpi;
 245     fi.dfAscent = ascent;
 246     fi.dfInternalLeading = il;
 247     fi.dfExternalLeading = 0;
 248     fi.dfItalic = (face->style_flags & FT_STYLE_FLAG_ITALIC) ? 1 : 0;
 249     fi.dfUnderline = 0;
 250     fi.dfStrikeOut = 0;
 251     fi.dfWeight = os2->usWeightClass;
 252     fi.dfCharSet = lookup_charset(enc);
 253     fi.dfPixWidth = (face->face_flags & FT_FACE_FLAG_FIXED_WIDTH) ?
 254         avg_width : 0;
 255     fi.dfPixHeight = ppem;
 256     fi.dfPitchAndFamily = FT_IS_FIXED_WIDTH(face) ? 0 : TMPF_FIXED_PITCH;
 257     switch(os2->panose[PAN_FAMILYTYPE_INDEX]) {
 258     case PAN_FAMILY_SCRIPT:
 259         fi.dfPitchAndFamily |= FF_SCRIPT;
 260         break;
 261     case PAN_FAMILY_DECORATIVE:
 262     case PAN_FAMILY_PICTORIAL:
 263         fi.dfPitchAndFamily |= FF_DECORATIVE;
 264         break;
 265     case PAN_FAMILY_TEXT_DISPLAY:
 266         if(fi.dfPitchAndFamily == 0) /* fixed */
 267             fi.dfPitchAndFamily = FF_MODERN;
 268         else {
 269             switch(os2->panose[PAN_SERIFSTYLE_INDEX]) {
 270             case PAN_SERIF_NORMAL_SANS:
 271             case PAN_SERIF_OBTUSE_SANS:
 272             case PAN_SERIF_PERP_SANS:
 273                 fi.dfPitchAndFamily |= FF_SWISS;
 274                 break;
 275             default:
 276                 fi.dfPitchAndFamily |= FF_ROMAN;
 277             }
 278         }
 279         break;
 280     default:
 281         fi.dfPitchAndFamily |= FF_DONTCARE;
 282     }
 283
 284     fi.dfAvgWidth = avg_width;
 285     fi.dfMaxWidth = max_width;
 286     fi.dfDefaultChar = def_char - fi.dfFirstChar;
 287     fi.dfBreakChar = ' ' - fi.dfFirstChar;
 288     fi.dfWidthBytes = (width_bytes + 1) & ~1;
 289
 290     fi.dfFace = start + fi.dfWidthBytes * ppem;
 291     fi.dfBitsOffset = start;
 292     fi.dfFlags = 0x10; /* DFF_1COLOR */
 293     fi.dfFlags |= FT_IS_FIXED_WIDTH(face) ? 1 : 2; /* DFF_FIXED : DFF_PROPORTIONAL */
 294
 295     hdr.dfVersion = 0x300;
 296     hdr.dfSize = start + fi.dfWidthBytes * ppem + strlen(face->family_name) + 1;
 297     fwrite(&hdr, sizeof(hdr), 1, fp);
 298     fwrite(&fi, sizeof(fi), 1, fp);
 299     fwrite(dfCharTable + fi.dfFirstChar, sizeof(*dfCharTable), ((unsigned char)fi.dfLastChar - (unsigned char)fi.dfFirstChar) + 3, fp);
 300
 301     for(i = first_char; i < 0x100; i++) {
 302         if(FT_Load_Char(face, cptable->sbcs.cp2uni[i], FT_LOAD_DEFAULT)) {
 303             continue;
 304         }
 305         assert(dfCharTable[i].width == face->glyph->metrics.horiAdvance >> 6);
 306
 307         for(x = 0; x < ((dfCharTable[i].width + 7) / 8); x++) {
 308             for(y = 0; y < ppem; y++) {
 309                 if(y < ascent - face->glyph->bitmap_top ||
 310                    y >=  face->glyph->bitmap.rows + ascent - face->glyph->bitmap_top) {
 311                     fputc('\0', fp);
 312                     continue;
 313                 }
 314                 x_off = face->glyph->bitmap_left / 8;
 315                 x_end = (face->glyph->bitmap_left + face->glyph->bitmap.width - 1) / 8;
 316                 if(x < x_off || x > x_end) {
 317                     fputc('\0', fp);
 318                     continue;
 319                 }
 320                 if(x == x_off)
 321                     left_byte = 0;
 322                 else
 323                     left_byte = face->glyph->bitmap.buffer[(y - (ascent - face->glyph->bitmap_top)) * face->glyph->bitmap.pitch + x - x_off - 1];
 324
 325                 /* On the last non-trival output byte (x == x_end) have we got one or two input bytes */
 326                 if(x == x_end && (face->glyph->bitmap_left % 8 != 0) && ((face->glyph->bitmap.width % 8 == 0) || (x != (((face->glyph->bitmap.width) & ~0x7) + face->glyph->bitmap_left) / 8)))
 327                     right_byte = 0;
 328                 else
 329                     right_byte = face->glyph->bitmap.buffer[(y - (ascent - face->glyph->bitmap_top)) * face->glyph->bitmap.pitch + x - x_off];
 330
 331                 byte = (left_byte << (8 - (face->glyph->bitmap_left & 7))) & 0xff;
 332                 byte |= ((right_byte >> (face->glyph->bitmap_left & 7)) & 0xff);
 333                 fputc(byte, fp);
 334             }
 335         }
 336     }
 337     for(x = 0; x < (space_size + 7) / 8; x++) {
 338         for(y = 0; y < ppem; y++)
 339             fputc('\0', fp);
 340     }
 341
 342     if(width_bytes & 1) {
 343         for(y = 0; y < ppem; y++)
 344             fputc('\0', fp);
 345     }
 346     fprintf(fp, "%s", face->family_name);
 347     fputc('\0', fp);
 348
 349 }
 350
 351
 352 int main(int argc, char **argv)
 353 {
 354     int ppem, enc;
 355     FT_Face face;
 356     FT_Library lib;
 357     int dpi, avg_width;
 358     unsigned int def_char;
 359     FILE *fp;
 360     char output[256];
 361     char name[256];
 362     char *cp;
 363     if(argc != 7) {
 364         usage(argv);
 365         exit(0);
 366     }
 367
 368     ppem = atoi(argv[2]);
 369     enc = atoi(argv[3]);
 370     dpi = atoi(argv[4]);
 371     def_char = atoi(argv[5]);
 372     avg_width = atoi(argv[6]);
 373
 374     if(FT_Init_FreeType(&lib)) {
 375         fprintf(stderr, "ft init failure\n");
 376         exit(0);
 377     }
 378
 379     if(FT_New_Face(lib, argv[1], 0, &face)) {
 380         fprintf(stderr, "Can't open face\n");
 381         usage(argv);
 382         exit(0);
 383     }
 384
 385     if(FT_Set_Pixel_Sizes(face, ppem, ppem)) {
 386         fprintf(stderr, "Can't set size\n");
 387         usage(argv);
 388         exit(0);
 389     }
 390
 391     strcpy(name, face->family_name);
 392     /* FIXME: should add a -o option instead */
 393     for(cp = name; *cp; cp++)
 394     {
 395         if(*cp == ' ') *cp = '_';
 396         else if (*cp >= 'A' && *cp <= 'Z') *cp += 'a' - 'A';
 397     }
 398
 399     sprintf(output, "%s-%d-%d-%d.fnt", name, enc, dpi, ppem);
 400
 401     fp = fopen(output, "w");
 402
 403     fill_fontinfo(face, enc, fp, dpi, def_char, avg_width);
 404     fclose(fp);
 405     exit(0);
 406 }
 407
 408 #else /* HAVE_FREETYPE */
 409
 410 int main(int argc, char **argv)
 411 {
 412     fprintf( stderr, "%s needs to be built with Freetype support\n", argv[0] );
 413     exit(1);
 414 }
 415
 416 #endif /* HAVE_FREETYPE */