1 /***************************************************************************/
5 /* High-level SFNT driver interface (body). */
7 /* Copyright 1996-2001, 2002, 2003, 2004, 2005, 2006, 2007 by */
8 /* David Turner, Robert Wilhelm, and Werner Lemberg. */
10 /* This file is part of the FreeType project, and may only be used, */
11 /* modified, and distributed under the terms of the FreeType project */
12 /* license, LICENSE.TXT. By continuing to use, modify, or distribute */
13 /* this file you indicate that you have read the license and */
14 /* understand and accept it fully. */
16 /***************************************************************************/
20 #include FT_INTERNAL_SFNT_H
21 #include FT_INTERNAL_OBJECTS_H
29 #ifdef TT_CONFIG_OPTION_EMBEDDED_BITMAPS
33 #ifdef TT_CONFIG_OPTION_POSTSCRIPT_NAMES
37 #ifdef TT_CONFIG_OPTION_BDF
39 #include FT_SERVICE_BDF_H
46 #include FT_SERVICE_GLYPH_DICT_H
47 #include FT_SERVICE_POSTSCRIPT_NAME_H
48 #include FT_SERVICE_SFNT_H
49 #include FT_SERVICE_TT_CMAP_H
58 get_sfnt_table( TT_Face face,
67 table = &face->header;
71 table = &face->horizontal;
75 table = face->vertical_info ? &face->vertical : 0;
79 table = face->os2.version == 0xFFFFU ? 0 : &face->os2;
83 table = &face->postscript;
87 table = &face->max_profile;
91 table = face->pclt.Version ? &face->pclt : 0;
103 sfnt_table_info( TT_Face face,
108 if ( !tag || !length )
109 return SFNT_Err_Invalid_Argument;
111 if ( idx >= face->num_tables )
112 return SFNT_Err_Table_Missing;
114 *tag = face->dir_tables[idx].Tag;
115 *length = face->dir_tables[idx].Length;
121 static const FT_Service_SFNT_TableRec sfnt_service_sfnt_table =
123 (FT_SFNT_TableLoadFunc)tt_face_load_any,
124 (FT_SFNT_TableGetFunc) get_sfnt_table,
125 (FT_SFNT_TableInfoFunc)sfnt_table_info
129 #ifdef TT_CONFIG_OPTION_POSTSCRIPT_NAMES
137 sfnt_get_glyph_name( TT_Face face,
146 error = tt_face_get_ps_name( face, glyph_index, &gname );
148 FT_STRCPYN( buffer, gname, buffer_max );
154 static const FT_Service_GlyphDictRec sfnt_service_glyph_dict =
156 (FT_GlyphDict_GetNameFunc) sfnt_get_glyph_name,
157 (FT_GlyphDict_NameIndexFunc)NULL
160 #endif /* TT_CONFIG_OPTION_POSTSCRIPT_NAMES */
164 * POSTSCRIPT NAME SERVICE
169 sfnt_get_ps_name( TT_Face face )
171 FT_Int n, found_win, found_apple;
172 const char* result = NULL;
175 /* shouldn't happen, but just in case to avoid memory leaks */
176 if ( face->postscript_name )
177 return face->postscript_name;
179 /* scan the name table to see whether we have a Postscript name here, */
180 /* either in Macintosh or Windows platform encodings */
184 for ( n = 0; n < face->num_names; n++ )
186 TT_NameEntryRec* name = face->name_table.names + n;
189 if ( name->nameID == 6 && name->stringLength > 0 )
191 if ( name->platformID == 3 &&
192 name->encodingID == 1 &&
193 name->languageID == 0x409 )
196 if ( name->platformID == 1 &&
197 name->encodingID == 0 &&
198 name->languageID == 0 )
203 if ( found_win != -1 )
205 FT_Memory memory = face->root.memory;
206 TT_NameEntryRec* name = face->name_table.names + found_win;
207 FT_UInt len = name->stringLength / 2;
208 FT_Error error = SFNT_Err_Ok;
213 if ( !FT_ALLOC( result, name->stringLength + 1 ) )
215 FT_Stream stream = face->name_table.stream;
216 FT_String* r = (FT_String*)result;
217 FT_Byte* p = (FT_Byte*)name->string;
220 if ( FT_STREAM_SEEK( name->stringOffset ) ||
221 FT_FRAME_ENTER( name->stringLength ) )
224 name->stringLength = 0;
225 name->stringOffset = 0;
226 FT_FREE( name->string );
231 p = (FT_Byte*)stream->cursor;
233 for ( ; len > 0; len--, p += 2 )
235 if ( p[0] == 0 && p[1] >= 32 && p[1] < 128 )
245 if ( found_apple != -1 )
247 FT_Memory memory = face->root.memory;
248 TT_NameEntryRec* name = face->name_table.names + found_apple;
249 FT_UInt len = name->stringLength;
250 FT_Error error = SFNT_Err_Ok;
255 if ( !FT_ALLOC( result, len + 1 ) )
257 FT_Stream stream = face->name_table.stream;
260 if ( FT_STREAM_SEEK( name->stringOffset ) ||
261 FT_STREAM_READ( result, len ) )
263 name->stringOffset = 0;
264 name->stringLength = 0;
265 FT_FREE( name->string );
269 ((char*)result)[len] = '\0';
274 face->postscript_name = result;
278 static const FT_Service_PsFontNameRec sfnt_service_ps_name =
280 (FT_PsName_GetFunc)sfnt_get_ps_name
287 static const FT_Service_TTCMapsRec tt_service_get_cmap_info =
289 (TT_CMap_Info_GetFunc)tt_get_cmap_info
293 #ifdef TT_CONFIG_OPTION_BDF
296 sfnt_get_charset_id( TT_Face face,
297 const char* *acharset_encoding,
298 const char* *acharset_registry )
300 BDF_PropertyRec encoding, registry;
304 /* XXX: I don't know whether this is correct, since
305 * tt_face_find_bdf_prop only returns something correct if we have
306 * previously selected a size that is listed in the BDF table.
307 * Should we change the BDF table format to include single offsets
308 * for `CHARSET_REGISTRY' and `CHARSET_ENCODING'?
310 error = tt_face_find_bdf_prop( face, "CHARSET_REGISTRY", ®istry );
313 error = tt_face_find_bdf_prop( face, "CHARSET_ENCODING", &encoding );
316 if ( registry.type == BDF_PROPERTY_TYPE_ATOM &&
317 encoding.type == BDF_PROPERTY_TYPE_ATOM )
319 *acharset_encoding = encoding.u.atom;
320 *acharset_registry = registry.u.atom;
323 error = FT_Err_Invalid_Argument;
331 static const FT_Service_BDFRec sfnt_service_bdf =
333 (FT_BDF_GetCharsetIdFunc) sfnt_get_charset_id,
334 (FT_BDF_GetPropertyFunc) tt_face_find_bdf_prop,
337 #endif /* TT_CONFIG_OPTION_BDF */
344 static const FT_ServiceDescRec sfnt_services[] =
346 { FT_SERVICE_ID_SFNT_TABLE, &sfnt_service_sfnt_table },
347 { FT_SERVICE_ID_POSTSCRIPT_FONT_NAME, &sfnt_service_ps_name },
348 #ifdef TT_CONFIG_OPTION_POSTSCRIPT_NAMES
349 { FT_SERVICE_ID_GLYPH_DICT, &sfnt_service_glyph_dict },
351 #ifdef TT_CONFIG_OPTION_BDF
352 { FT_SERVICE_ID_BDF, &sfnt_service_bdf },
354 { FT_SERVICE_ID_TT_CMAP, &tt_service_get_cmap_info },
360 FT_CALLBACK_DEF( FT_Module_Interface )
361 sfnt_get_interface( FT_Module module,
362 const char* module_interface )
366 return ft_service_list_lookup( sfnt_services, module_interface );
370 #ifdef FT_CONFIG_OPTION_OLD_INTERNALS
372 FT_CALLBACK_DEF( FT_Error )
373 tt_face_load_sfnt_header_stub( TT_Face face,
380 FT_UNUSED( face_index );
383 return FT_Err_Unimplemented_Feature;
387 FT_CALLBACK_DEF( FT_Error )
388 tt_face_load_directory_stub( TT_Face face,
396 return FT_Err_Unimplemented_Feature;
400 FT_CALLBACK_DEF( FT_Error )
401 tt_face_load_hdmx_stub( TT_Face face,
407 return FT_Err_Unimplemented_Feature;
411 FT_CALLBACK_DEF( void )
412 tt_face_free_hdmx_stub( TT_Face face )
418 FT_CALLBACK_DEF( FT_Error )
419 tt_face_set_sbit_strike_stub( TT_Face face,
422 FT_ULong* astrike_index )
425 * We simply forge a FT_Size_Request and call the real function
426 * that does all the work.
428 * This stub might be called by libXfont in the X.Org Xserver,
429 * compiled against version 2.1.8 or newer.
432 FT_Size_RequestRec req;
435 req.type = FT_SIZE_REQUEST_TYPE_NOMINAL;
436 req.width = (FT_F26Dot6)x_ppem;
437 req.height = (FT_F26Dot6)y_ppem;
438 req.horiResolution = 0;
439 req.vertResolution = 0;
441 *astrike_index = 0x7FFFFFFFUL;
443 return tt_face_set_sbit_strike( face, &req, astrike_index );
447 FT_CALLBACK_DEF( FT_Error )
448 tt_face_load_sbit_stub( TT_Face face,
455 * This function was originally implemented to load the sbit table.
456 * However, it has been replaced by `tt_face_load_eblc', and this stub
457 * is only there for some rogue clients which would want to call it
458 * directly (which doesn't make much sense).
460 return FT_Err_Unimplemented_Feature;
464 FT_CALLBACK_DEF( void )
465 tt_face_free_sbit_stub( TT_Face face )
467 /* nothing to do in this stub */
472 FT_CALLBACK_DEF( FT_Error )
473 tt_face_load_charmap_stub( TT_Face face,
481 return FT_Err_Unimplemented_Feature;
485 FT_CALLBACK_DEF( FT_Error )
486 tt_face_free_charmap_stub( TT_Face face,
495 #endif /* FT_CONFIG_OPTION_OLD_INTERNALS */
499 const SFNT_Interface sfnt_interface =
510 #ifdef FT_CONFIG_OPTION_OLD_INTERNALS
511 tt_face_load_sfnt_header_stub,
512 tt_face_load_directory_stub,
525 #ifdef FT_CONFIG_OPTION_OLD_INTERNALS
526 tt_face_load_hdmx_stub,
527 tt_face_free_hdmx_stub,
534 #ifdef TT_CONFIG_OPTION_EMBEDDED_BITMAPS
541 #ifdef FT_CONFIG_OPTION_OLD_INTERNALS
542 tt_face_set_sbit_strike_stub,
543 tt_face_load_sbit_stub,
546 tt_load_sbit_metrics,
549 #ifdef TT_CONFIG_OPTION_EMBEDDED_BITMAPS
550 tt_face_load_sbit_image,
555 #ifdef FT_CONFIG_OPTION_OLD_INTERNALS
556 tt_face_free_sbit_stub,
559 #ifdef TT_CONFIG_OPTION_POSTSCRIPT_NAMES
562 tt_face_free_ps_names,
568 #ifdef FT_CONFIG_OPTION_OLD_INTERNALS
569 tt_face_load_charmap_stub,
570 tt_face_free_charmap_stub,
573 /* since version 2.1.8 */
577 /* since version 2.2 */
579 tt_face_load_font_dir,
582 #ifdef TT_CONFIG_OPTION_EMBEDDED_BITMAPS
583 /* see `ttsbit.h' and `sfnt.h' */
587 tt_face_set_sbit_strike,
588 tt_face_load_strike_metrics,
600 FT_CALLBACK_TABLE_DEF
601 const FT_Module_Class sfnt_module_class =
603 0, /* not a font driver or renderer */
604 sizeof( FT_ModuleRec ),
606 "sfnt", /* driver name */
607 0x10000L, /* driver version 1.0 */
608 0x20000L, /* driver requires FreeType 2.0 or higher */
610 (const void*)&sfnt_interface, /* module specific interface */
612 (FT_Module_Constructor)0,
613 (FT_Module_Destructor) 0,
614 (FT_Module_Requester) sfnt_get_interface