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     char namebuf[4096];
 167     TT_OS2 *os2;
 168     cptable = wine_cp_get_table(enc);
 169     if(!cptable) {
 170         fprintf(stderr, "Can't find codepage %d\n", enc);
 171         exit(0);
 172     }
 173     if(cptable->info.char_size != 1) {
 174         fprintf(stderr, "Can't cope with double byte codepages\n");
 175         exit(0);
 176     }
 177
 178     ppem = face->size->metrics.y_ppem;
 179     start = sizeof(FNT_HEADER) + sizeof(FONTINFO16);
 180
 181     if(FT_Load_Char(face, 0xc5, FT_LOAD_DEFAULT)) {
 182         fprintf(stderr, "Can't find Aring\n");
 183         exit(0);
 184     }
 185     ascent = face->glyph->metrics.height >> 6;
 186     descent = ppem - ascent;
 187     if(FT_Load_Char(face, 'M', FT_LOAD_DEFAULT)) {
 188         fprintf(stderr, "Can't find M\n");
 189         exit(0);
 190     }
 191     il = ascent - (face->glyph->metrics.height >> 6);
 192
 193     /* Hack: Courier has no internal leading, so we do likewise */
 194     if(!strcmp(face->family_name, "Wine Courier"))
 195         il = 0;
 196
 197     first_char = FT_Get_First_Char(face, &gi);
 198     if(first_char == 0xd) /* fontforge's first glyph is 0xd, we'll catch this and skip it */
 199         first_char = FT_Get_Next_Char(face, first_char, &gi);
 200
 201     dfCharTable = malloc((255 + 3) * sizeof(*dfCharTable));
 202     memset(&fi, 0, sizeof(fi));
 203     fi.dfFirstChar = first_char;
 204     fi.dfLastChar = 0xff;
 205     start += ((unsigned char)fi.dfLastChar - (unsigned char)fi.dfFirstChar + 3 ) * sizeof(*dfCharTable);
 206
 207     num_names = FT_Get_Sfnt_Name_Count(face);
 208     for(i = 0; i <num_names; i++) {
 209         FT_Get_Sfnt_Name(face, i, &sfntname);
 210         strncpy(namebuf, sfntname.string, sfntname.string_len);
 211         namebuf[sfntname.string_len] = '\0';
 212         if(sfntname.platform_id == 1 && sfntname.encoding_id == 0 && sfntname.language_id == 0 && sfntname.name_id == 0) {
 213             strncpy(hdr.dfCopyright, namebuf, 60);
 214             hdr.dfCopyright[59] = '\0';
 215         }
 216     }
 217
 218     os2 = FT_Get_Sfnt_Table(face, ft_sfnt_os2);
 219     for(i = first_char; i < 0x100; i++) {
 220         gi = FT_Get_Char_Index(face, cptable->sbcs.cp2uni[i]);
 221         if(gi == 0)
 222             fprintf(stderr, "Missing glyph for char %04x\n", cptable->sbcs.cp2uni[i]);
 223         if(FT_Load_Char(face, cptable->sbcs.cp2uni[i], FT_LOAD_DEFAULT)) {
 224             fprintf(stderr, "error loading char %d - bad news!\n", i);
 225             continue;
 226         }
 227         dfCharTable[i].width = face->glyph->metrics.horiAdvance >> 6;
 228         dfCharTable[i].offset = start + (width_bytes * ppem);
 229         width_bytes += ((face->glyph->metrics.horiAdvance >> 6) + 7) >> 3;
 230         if(max_width < (face->glyph->metrics.horiAdvance >> 6))
 231             max_width = face->glyph->metrics.horiAdvance >> 6;
 232     }
 233     /* space */
 234     space_size = (ppem + 3) / 4;
 235     dfCharTable[i].width = space_size;
 236     dfCharTable[i].offset = start + (width_bytes * ppem);
 237     width_bytes += (space_size + 7) >> 3;
 238     /* sentinel */
 239     dfCharTable[++i].width = 0;
 240     dfCharTable[i].offset = start + (width_bytes * ppem);
 241
 242     fi.dfType = 0;
 243     fi.dfPoints = ((ppem - il) * 72 + dpi/2) / dpi;
 244     fi.dfVertRes = dpi;
 245     fi.dfHorizRes = dpi;
 246     fi.dfAscent = ascent;
 247     fi.dfInternalLeading = il;
 248     fi.dfExternalLeading = 0;
 249     fi.dfItalic = (face->style_flags & FT_STYLE_FLAG_ITALIC) ? 1 : 0;
 250     fi.dfUnderline = 0;
 251     fi.dfStrikeOut = 0;
 252     fi.dfWeight = os2->usWeightClass;
 253     fi.dfCharSet = lookup_charset(enc);
 254     fi.dfPixWidth = (face->face_flags & FT_FACE_FLAG_FIXED_WIDTH) ?
 255         avg_width : 0;
 256     fi.dfPixHeight = ppem;
 257     fi.dfPitchAndFamily = FT_IS_FIXED_WIDTH(face) ? 0 : TMPF_FIXED_PITCH;
 258     switch(os2->panose[PAN_FAMILYTYPE_INDEX]) {
 259     case PAN_FAMILY_SCRIPT:
 260         fi.dfPitchAndFamily |= FF_SCRIPT;
 261         break;
 262     case PAN_FAMILY_DECORATIVE:
 263     case PAN_FAMILY_PICTORIAL:
 264         fi.dfPitchAndFamily |= FF_DECORATIVE;
 265         break;
 266     case PAN_FAMILY_TEXT_DISPLAY:
 267         if(fi.dfPitchAndFamily == 0) /* fixed */
 268             fi.dfPitchAndFamily = FF_MODERN;
 269         else {
 270             switch(os2->panose[PAN_SERIFSTYLE_INDEX]) {
 271             case PAN_SERIF_NORMAL_SANS:
 272             case PAN_SERIF_OBTUSE_SANS:
 273             case PAN_SERIF_PERP_SANS:
 274                 fi.dfPitchAndFamily |= FF_SWISS;
 275                 break;
 276             default:
 277                 fi.dfPitchAndFamily |= FF_ROMAN;
 278             }
 279         }
 280         break;
 281     default:
 282         fi.dfPitchAndFamily |= FF_DONTCARE;
 283     }
 284
 285     fi.dfAvgWidth = avg_width;
 286     fi.dfMaxWidth = max_width;
 287     fi.dfDefaultChar = def_char - fi.dfFirstChar;
 288     fi.dfBreakChar = ' ' - fi.dfFirstChar;
 289     fi.dfWidthBytes = (width_bytes + 1) & ~1;
 290
 291     fi.dfFace = start + fi.dfWidthBytes * ppem;
 292     fi.dfBitsOffset = start;
 293     fi.dfFlags = 0x10; /* DFF_1COLOR */
 294     fi.dfFlags |= FT_IS_FIXED_WIDTH(face) ? 1 : 2; /* DFF_FIXED : DFF_PROPORTIONAL */
 295
 296     hdr.dfVersion = 0x300;
 297     hdr.dfSize = start + fi.dfWidthBytes * ppem + strlen(face->family_name) + 1;
 298     fwrite(&hdr, sizeof(hdr), 1, fp);
 299     fwrite(&fi, sizeof(fi), 1, fp);
 300     fwrite(dfCharTable + fi.dfFirstChar, sizeof(*dfCharTable), ((unsigned char)fi.dfLastChar - (unsigned char)fi.dfFirstChar) + 3, fp);
 301
 302     for(i = first_char; i < 0x100; i++) {
 303         if(FT_Load_Char(face, cptable->sbcs.cp2uni[i], FT_LOAD_DEFAULT)) {
 304             continue;
 305         }
 306         assert(dfCharTable[i].width == face->glyph->metrics.horiAdvance >> 6);
 307
 308         for(x = 0; x < ((dfCharTable[i].width + 7) / 8); x++) {
 309             for(y = 0; y < ppem; y++) {
 310                 if(y < ascent - face->glyph->bitmap_top ||
 311                    y >=  face->glyph->bitmap.rows + ascent - face->glyph->bitmap_top) {
 312                     fputc('\0', fp);
 313                     continue;
 314                 }
 315                 x_off = face->glyph->bitmap_left / 8;
 316                 x_end = (face->glyph->bitmap_left + face->glyph->bitmap.width - 1) / 8;
 317                 if(x < x_off || x > x_end) {
 318                     fputc('\0', fp);
 319                     continue;
 320                 }
 321                 if(x == x_off)
 322                     left_byte = 0;
 323                 else
 324                     left_byte = face->glyph->bitmap.buffer[(y - (ascent - face->glyph->bitmap_top)) * face->glyph->bitmap.pitch + x - x_off - 1];
 325
 326                 /* On the last non-trival output byte (x == x_end) have we got one or two input bytes */
 327                 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)))
 328                     right_byte = 0;
 329                 else
 330                     right_byte = face->glyph->bitmap.buffer[(y - (ascent - face->glyph->bitmap_top)) * face->glyph->bitmap.pitch + x - x_off];
 331
 332                 byte = (left_byte << (8 - (face->glyph->bitmap_left & 7))) & 0xff;
 333                 byte |= ((right_byte >> (face->glyph->bitmap_left & 7)) & 0xff);
 334                 fputc(byte, fp);
 335             }
 336         }
 337     }
 338     for(x = 0; x < (space_size + 7) / 8; x++) {
 339         for(y = 0; y < ppem; y++)
 340             fputc('\0', fp);
 341     }
 342
 343     if(width_bytes & 1) {
 344         for(y = 0; y < ppem; y++)
 345             fputc('\0', fp);
 346     }
 347     fprintf(fp, "%s", face->family_name);
 348     fputc('\0', fp);
 349
 350 }
 351
 352
 353 int main(int argc, char **argv)
 354 {
 355     int ppem, enc;
 356     FT_Face face;
 357     FT_Library lib;
 358     int dpi, avg_width;
 359     unsigned int def_char;
 360     FILE *fp;
 361     char output[256];
 362     char name[256];
 363     char *cp;
 364     if(argc != 7) {
 365         usage(argv);
 366         exit(0);
 367     }
 368
 369     ppem = atoi(argv[2]);
 370     enc = atoi(argv[3]);
 371     dpi = atoi(argv[4]);
 372     def_char = atoi(argv[5]);
 373     avg_width = atoi(argv[6]);
 374
 375     if(FT_Init_FreeType(&lib)) {
 376         fprintf(stderr, "ft init failure\n");
 377         exit(0);
 378     }
 379
 380     if(FT_New_Face(lib, argv[1], 0, &face)) {
 381         fprintf(stderr, "Can't open face\n");
 382         usage(argv);
 383         exit(0);
 384     }
 385
 386     if(FT_Set_Pixel_Sizes(face, ppem, ppem)) {
 387         fprintf(stderr, "Can't set size\n");
 388         usage(argv);
 389         exit(0);
 390     }
 391
 392     strcpy(name, face->family_name);
 393     /* FIXME: should add a -o option instead */
 394     for(cp = name; *cp; cp++)
 395     {
 396         if(*cp == ' ') *cp = '_';
 397         else if (*cp >= 'A' && *cp <= 'Z') *cp += 'a' - 'A';
 398     }
 399
 400     sprintf(output, "%s-%d-%d-%d.fnt", name, enc, dpi, ppem);
 401
 402     fp = fopen(output, "w");
 403
 404     fill_fontinfo(face, enc, fp, dpi, def_char, avg_width);
 405     fclose(fp);
 406     exit(0);
 407 }
 408
 409 #else /* HAVE_FREETYPE */
 410
 411 int main(int argc, char **argv)
 412 {
 413     fprintf( stderr, "%s needs to be built with Freetype support\n", argv[0] );
 414     exit(1);
 415 }
 416
 417 #endif /* HAVE_FREETYPE */