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 "wine/wingdi16.h"
  39 #include "wingdi.h"
  40
  41 #include "pshpack1.h"
  42
  43 typedef struct
  44 {
  45     WORD dfVersion;
  46     DWORD dfSize;
  47     char dfCopyright[60];
  48 } FNT_HEADER;
  49
  50 typedef struct {
  51     WORD width;
  52     DWORD offset;
  53 } CHAR_TABLE_ENTRY;
  54
  55 #include "poppack.h"
  56
  57 static void usage(char **argv)
  58 {
  59     fprintf(stderr, "%s foo.ttf ppem enc dpi def_char avg_width\n", argv[0]);
  60     return;
  61 }
  62
  63 static int lookup_charset(int enc)
  64 {
  65     /* FIXME: make winelib app and use TranslateCharsetInfo */
  66     switch(enc) {
  67     case 1250:
  68         return EE_CHARSET;
  69     case 1251:
  70         return RUSSIAN_CHARSET;
  71     case 1252:
  72         return ANSI_CHARSET;
  73     case 1253:
  74         return GREEK_CHARSET;
  75     case 1254:
  76         return TURKISH_CHARSET;
  77     case 1255:
  78         return HEBREW_CHARSET;
  79     case 1256:
  80         return ARABIC_CHARSET;
  81     case 1257:
  82         return BALTIC_CHARSET;
  83     case 1258:
  84         return VIETNAMESE_CHARSET;
  85     case 437:
  86     case 737:
  87     case 775:
  88     case 850:
  89     case 852:
  90     case 855:
  91     case 857:
  92     case 860:
  93     case 861:
  94     case 862:
  95     case 863:
  96     case 864:
  97     case 865:
  98     case 866:
  99     case 869:
 100         return OEM_CHARSET;
 101     case 874:
 102         return THAI_CHARSET;
 103     case 932:
 104         return SHIFTJIS_CHARSET;
 105     case 936:
 106         return GB2312_CHARSET;
 107     case 949:
 108         return HANGUL_CHARSET;
 109     case 950:
 110         return CHINESEBIG5_CHARSET;
 111     }
 112     fprintf(stderr, "Unknown encoding %d - using OEM_CHARSET\n", enc);
 113
 114     return OEM_CHARSET;
 115 }
 116
 117 static void fill_fontinfo(FT_Face face, int enc, FILE *fp, int dpi, unsigned char def_char, int avg_width)
 118 {
 119     int ascent, il, ppem, descent, width_bytes = 0, space_size, max_width = 0;
 120     FNT_HEADER hdr;
 121     FONTINFO16 fi;
 122     BYTE left_byte, right_byte, byte;
 123     DWORD start;
 124     CHAR_TABLE_ENTRY *dfCharTable;
 125     int i, x, y, x_off, x_end, first_char;
 126     FT_Int gi;
 127     int num_names;
 128     const union cptable *cptable;
 129     FT_SfntName sfntname;
 130     TT_OS2 *os2;
 131     cptable = wine_cp_get_table(enc);
 132     if(!cptable) {
 133         fprintf(stderr, "Can't find codepage %d\n", enc);
 134         exit(0);
 135     }
 136     if(cptable->info.char_size != 1) {
 137         fprintf(stderr, "Can't cope with double byte codepages\n");
 138         exit(0);
 139     }
 140
 141     ppem = face->size->metrics.y_ppem;
 142     start = sizeof(FNT_HEADER) + sizeof(FONTINFO16);
 143
 144     if(FT_Load_Char(face, 0xc5, FT_LOAD_DEFAULT)) {
 145         fprintf(stderr, "Can't find Aring\n");
 146         exit(0);
 147     }
 148     ascent = face->glyph->metrics.height >> 6;
 149     descent = ppem - ascent;
 150     if(FT_Load_Char(face, 'M', FT_LOAD_DEFAULT)) {
 151         fprintf(stderr, "Can't find M\n");
 152         exit(0);
 153     }
 154     il = ascent - (face->glyph->metrics.height >> 6);
 155
 156     /* Hack: Courier has no internal leading, so we do likewise */
 157     if(!strcmp(face->family_name, "Wine Courier"))
 158         il = 0;
 159
 160     first_char = FT_Get_First_Char(face, &gi);
 161     if(first_char == 0xd) /* fontforge's first glyph is 0xd, we'll catch this and skip it */
 162         first_char = 32; /* FT_Get_Next_Char for some reason returns too high
 163                             number in this case */
 164
 165     dfCharTable = malloc((255 + 3) * sizeof(*dfCharTable));
 166     memset(dfCharTable, 0, (255 + 3) * sizeof(*dfCharTable));
 167
 168     memset(&fi, 0, sizeof(fi));
 169     fi.dfFirstChar = first_char;
 170     fi.dfLastChar = 0xff;
 171     start += ((unsigned char)fi.dfLastChar - (unsigned char)fi.dfFirstChar + 3 ) * sizeof(*dfCharTable);
 172
 173     num_names = FT_Get_Sfnt_Name_Count(face);
 174     for(i = 0; i <num_names; i++) {
 175         FT_Get_Sfnt_Name(face, i, &sfntname);
 176         if(sfntname.platform_id == 1 && sfntname.encoding_id == 0 &&
 177            sfntname.language_id == 0 && sfntname.name_id == 0) {
 178             size_t len = min( sfntname.string_len, sizeof(hdr.dfCopyright)-1 );
 179             memcpy(hdr.dfCopyright, sfntname.string, len);
 180             hdr.dfCopyright[len] = 0;
 181         }
 182     }
 183
 184     os2 = FT_Get_Sfnt_Table(face, ft_sfnt_os2);
 185     for(i = first_char; i < 0x100; i++) {
 186         gi = FT_Get_Char_Index(face, cptable->sbcs.cp2uni[i]);
 187         if(gi == 0)
 188             fprintf(stderr, "Missing glyph for char %04x\n", cptable->sbcs.cp2uni[i]);
 189         if(FT_Load_Char(face, cptable->sbcs.cp2uni[i], FT_LOAD_DEFAULT)) {
 190             fprintf(stderr, "error loading char %d - bad news!\n", i);
 191             continue;
 192         }
 193         dfCharTable[i].width = face->glyph->metrics.horiAdvance >> 6;
 194         dfCharTable[i].offset = start + (width_bytes * ppem);
 195         width_bytes += ((face->glyph->metrics.horiAdvance >> 6) + 7) >> 3;
 196         if(max_width < (face->glyph->metrics.horiAdvance >> 6))
 197             max_width = face->glyph->metrics.horiAdvance >> 6;
 198     }
 199     /* space */
 200     space_size = (ppem + 3) / 4;
 201     dfCharTable[i].width = space_size;
 202     dfCharTable[i].offset = start + (width_bytes * ppem);
 203     width_bytes += (space_size + 7) >> 3;
 204     /* sentinel */
 205     dfCharTable[++i].width = 0;
 206     dfCharTable[i].offset = start + (width_bytes * ppem);
 207
 208     fi.dfType = 0;
 209     fi.dfPoints = ((ppem - il) * 72 + dpi/2) / dpi;
 210     fi.dfVertRes = dpi;
 211     fi.dfHorizRes = dpi;
 212     fi.dfAscent = ascent;
 213     fi.dfInternalLeading = il;
 214     fi.dfExternalLeading = 0;
 215     fi.dfItalic = (face->style_flags & FT_STYLE_FLAG_ITALIC) ? 1 : 0;
 216     fi.dfUnderline = 0;
 217     fi.dfStrikeOut = 0;
 218     fi.dfWeight = os2->usWeightClass;
 219     fi.dfCharSet = lookup_charset(enc);
 220     fi.dfPixWidth = (face->face_flags & FT_FACE_FLAG_FIXED_WIDTH) ?
 221         avg_width : 0;
 222     fi.dfPixHeight = ppem;
 223     fi.dfPitchAndFamily = FT_IS_FIXED_WIDTH(face) ? 0 : TMPF_FIXED_PITCH;
 224     switch(os2->panose[PAN_FAMILYTYPE_INDEX]) {
 225     case PAN_FAMILY_SCRIPT:
 226         fi.dfPitchAndFamily |= FF_SCRIPT;
 227         break;
 228     case PAN_FAMILY_DECORATIVE:
 229     case PAN_FAMILY_PICTORIAL:
 230         fi.dfPitchAndFamily |= FF_DECORATIVE;
 231         break;
 232     case PAN_FAMILY_TEXT_DISPLAY:
 233         if(fi.dfPitchAndFamily == 0) /* fixed */
 234             fi.dfPitchAndFamily = FF_MODERN;
 235         else {
 236             switch(os2->panose[PAN_SERIFSTYLE_INDEX]) {
 237             case PAN_SERIF_NORMAL_SANS:
 238             case PAN_SERIF_OBTUSE_SANS:
 239             case PAN_SERIF_PERP_SANS:
 240                 fi.dfPitchAndFamily |= FF_SWISS;
 241                 break;
 242             default:
 243                 fi.dfPitchAndFamily |= FF_ROMAN;
 244             }
 245         }
 246         break;
 247     default:
 248         fi.dfPitchAndFamily |= FF_DONTCARE;
 249     }
 250
 251     fi.dfAvgWidth = avg_width;
 252     fi.dfMaxWidth = max_width;
 253     fi.dfDefaultChar = def_char - fi.dfFirstChar;
 254     fi.dfBreakChar = ' ' - fi.dfFirstChar;
 255     fi.dfWidthBytes = (width_bytes + 1) & ~1;
 256
 257     fi.dfFace = start + fi.dfWidthBytes * ppem;
 258     fi.dfBitsOffset = start;
 259     fi.dfFlags = 0x10; /* DFF_1COLOR */
 260     fi.dfFlags |= FT_IS_FIXED_WIDTH(face) ? 1 : 2; /* DFF_FIXED : DFF_PROPORTIONAL */
 261
 262     hdr.dfVersion = 0x300;
 263     hdr.dfSize = start + fi.dfWidthBytes * ppem + strlen(face->family_name) + 1;
 264     fwrite(&hdr, sizeof(hdr), 1, fp);
 265     fwrite(&fi, sizeof(fi), 1, fp);
 266     fwrite(dfCharTable + fi.dfFirstChar, sizeof(*dfCharTable), ((unsigned char)fi.dfLastChar - (unsigned char)fi.dfFirstChar) + 3, fp);
 267
 268     for(i = first_char; i < 0x100; i++) {
 269         if(FT_Load_Char(face, cptable->sbcs.cp2uni[i], FT_LOAD_DEFAULT)) {
 270             continue;
 271         }
 272         assert(dfCharTable[i].width == face->glyph->metrics.horiAdvance >> 6);
 273
 274         for(x = 0; x < ((dfCharTable[i].width + 7) / 8); x++) {
 275             for(y = 0; y < ppem; y++) {
 276                 if(y < ascent - face->glyph->bitmap_top ||
 277                    y >=  face->glyph->bitmap.rows + ascent - face->glyph->bitmap_top) {
 278                     fputc('\0', fp);
 279                     continue;
 280                 }
 281                 x_off = face->glyph->bitmap_left / 8;
 282                 x_end = (face->glyph->bitmap_left + face->glyph->bitmap.width - 1) / 8;
 283                 if(x < x_off || x > x_end) {
 284                     fputc('\0', fp);
 285                     continue;
 286                 }
 287                 if(x == x_off)
 288                     left_byte = 0;
 289                 else
 290                     left_byte = face->glyph->bitmap.buffer[(y - (ascent - face->glyph->bitmap_top)) * face->glyph->bitmap.pitch + x - x_off - 1];
 291
 292                 /* On the last non-trival output byte (x == x_end) have we got one or two input bytes */
 293                 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)))
 294                     right_byte = 0;
 295                 else
 296                     right_byte = face->glyph->bitmap.buffer[(y - (ascent - face->glyph->bitmap_top)) * face->glyph->bitmap.pitch + x - x_off];
 297
 298                 byte = (left_byte << (8 - (face->glyph->bitmap_left & 7))) & 0xff;
 299                 byte |= ((right_byte >> (face->glyph->bitmap_left & 7)) & 0xff);
 300                 fputc(byte, fp);
 301             }
 302         }
 303     }
 304     for(x = 0; x < (space_size + 7) / 8; x++) {
 305         for(y = 0; y < ppem; y++)
 306             fputc('\0', fp);
 307     }
 308
 309     if(width_bytes & 1) {
 310         for(y = 0; y < ppem; y++)
 311             fputc('\0', fp);
 312     }
 313     fprintf(fp, "%s", face->family_name);
 314     fputc('\0', fp);
 315
 316 }
 317
 318
 319 int main(int argc, char **argv)
 320 {
 321     int ppem, enc;
 322     FT_Face face;
 323     FT_Library lib;
 324     int dpi, avg_width;
 325     unsigned int def_char;
 326     FILE *fp;
 327     char output[256];
 328     char name[256];
 329     char *cp;
 330     if(argc != 7) {
 331         usage(argv);
 332         exit(0);
 333     }
 334
 335     ppem = atoi(argv[2]);
 336     enc = atoi(argv[3]);
 337     dpi = atoi(argv[4]);
 338     def_char = atoi(argv[5]);
 339     avg_width = atoi(argv[6]);
 340
 341     if(FT_Init_FreeType(&lib)) {
 342         fprintf(stderr, "ft init failure\n");
 343         exit(0);
 344     }
 345
 346     if(FT_New_Face(lib, argv[1], 0, &face)) {
 347         fprintf(stderr, "Can't open face\n");
 348         usage(argv);
 349         exit(0);
 350     }
 351
 352     if(FT_Set_Pixel_Sizes(face, ppem, ppem)) {
 353         fprintf(stderr, "Can't set size\n");
 354         usage(argv);
 355         exit(0);
 356     }
 357
 358     strcpy(name, face->family_name);
 359     /* FIXME: should add a -o option instead */
 360     for(cp = name; *cp; cp++)
 361     {
 362         if(*cp == ' ') *cp = '_';
 363         else if (*cp >= 'A' && *cp <= 'Z') *cp += 'a' - 'A';
 364     }
 365
 366     sprintf(output, "%s-%d-%d-%d.fnt", name, enc, dpi, ppem);
 367
 368     fp = fopen(output, "w");
 369
 370     fill_fontinfo(face, enc, fp, dpi, def_char, avg_width);
 371     fclose(fp);
 372     exit(0);
 373 }
 374
 375 #else /* HAVE_FREETYPE */
 376
 377 int main(int argc, char **argv)
 378 {
 379     fprintf( stderr, "%s needs to be built with Freetype support\n", argv[0] );
 380     exit(1);
 381 }
 382
 383 #endif /* HAVE_FREETYPE */