ttgload.c revision dee781342b932b60c0c885d4f493b8246710a34c
1/***************************************************************************/ 2/* */ 3/* ttgload.c */ 4/* */ 5/* TrueType Glyph Loader (body). */ 6/* */ 7/* Copyright 1996-2000 by */ 8/* David Turner, Robert Wilhelm, and Werner Lemberg. */ 9/* */ 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. */ 15/* */ 16/***************************************************************************/ 17 18 19#include <ft2build.h> 20#include FT_INTERNAL_DEBUG_H 21#include FT_INTERNAL_CALC_H 22#include FT_INTERNAL_STREAM_H 23#include FT_INTERNAL_SFNT_H 24#include FT_TRUETYPE_TAGS_H 25#include FT_OUTLINE_H 26 27#include "ttgload.h" 28 29#include "tterrors.h" 30 31 32 /*************************************************************************/ 33 /* */ 34 /* The macro FT_COMPONENT is used in trace mode. It is an implicit */ 35 /* parameter of the FT_TRACE() and FT_ERROR() macros, used to print/log */ 36 /* messages during execution. */ 37 /* */ 38#undef FT_COMPONENT 39#define FT_COMPONENT trace_ttgload 40 41 42 /*************************************************************************/ 43 /* */ 44 /* Composite font flags. */ 45 /* */ 46#define ARGS_ARE_WORDS 0x001 47#define ARGS_ARE_XY_VALUES 0x002 48#define ROUND_XY_TO_GRID 0x004 49#define WE_HAVE_A_SCALE 0x008 50/* reserved 0x010 */ 51#define MORE_COMPONENTS 0x020 52#define WE_HAVE_AN_XY_SCALE 0x040 53#define WE_HAVE_A_2X2 0x080 54#define WE_HAVE_INSTR 0x100 55#define USE_MY_METRICS 0x200 56 57 58 59 /*************************************************************************/ 60 /* */ 61 /* <Function> */ 62 /* TT_Get_Metrics */ 63 /* */ 64 /* <Description> */ 65 /* Returns the horizontal or vertical metrics in font units for a */ 66 /* given glyph. The metrics are the left side bearing (resp. top */ 67 /* side bearing) and advance width (resp. advance height). */ 68 /* */ 69 /* <Input> */ 70 /* header :: A pointer to either the horizontal or vertical metrics */ 71 /* structure. */ 72 /* */ 73 /* index :: The glyph index. */ 74 /* */ 75 /* <Output> */ 76 /* bearing :: The bearing, either left side or top side. */ 77 /* */ 78 /* advance :: The advance width resp. advance height. */ 79 /* */ 80 /* <Note> */ 81 /* This function will much probably move to another component in the */ 82 /* near future, but I haven't decided which yet. */ 83 /* */ 84 FT_LOCAL_DEF 85 void TT_Get_Metrics( TT_HoriHeader* header, 86 FT_UInt index, 87 FT_Short* bearing, 88 FT_UShort* advance ) 89 { 90 TT_LongMetrics* longs_m; 91 FT_UShort k = header->number_Of_HMetrics; 92 93 94 if ( index < (FT_UInt)k ) 95 { 96 longs_m = (TT_LongMetrics*)header->long_metrics + index; 97 *bearing = longs_m->bearing; 98 *advance = longs_m->advance; 99 } 100 else 101 { 102 *bearing = ((TT_ShortMetrics*)header->short_metrics)[index - k]; 103 *advance = ((TT_LongMetrics*)header->long_metrics)[k - 1].advance; 104 } 105 } 106 107 108 /*************************************************************************/ 109 /* */ 110 /* Returns the horizontal metrics in font units for a given glyph. If */ 111 /* `check' is true, take care of monospaced fonts by returning the */ 112 /* advance width maximum. */ 113 /* */ 114 static 115 void Get_HMetrics( TT_Face face, 116 FT_UInt index, 117 FT_Bool check, 118 FT_Short* lsb, 119 FT_UShort* aw ) 120 { 121 TT_Get_Metrics( &face->horizontal, index, lsb, aw ); 122 123 if ( check && face->postscript.isFixedPitch ) 124 *aw = face->horizontal.advance_Width_Max; 125 } 126 127 128 /*************************************************************************/ 129 /* */ 130 /* Returns the advance width table for a given pixel size if it is */ 131 /* found in the font's `hdmx' table (if any). */ 132 /* */ 133 static 134 FT_Byte* Get_Advance_Widths( TT_Face face, 135 FT_UShort ppem ) 136 { 137 FT_UShort n; 138 139 for ( n = 0; n < face->hdmx.num_records; n++ ) 140 if ( face->hdmx.records[n].ppem == ppem ) 141 return face->hdmx.records[n].widths; 142 143 return NULL; 144 } 145 146 147#define cur_to_org( n, zone ) \ 148 MEM_Copy( (zone)->org, (zone)->cur, n * sizeof ( FT_Vector ) ) 149 150#define org_to_cur( n, zone ) \ 151 MEM_Copy( (zone)->cur, (zone)->org, n * sizeof ( FT_Vector ) ) 152 153 154 /*************************************************************************/ 155 /* */ 156 /* Translates an array of coordinates. */ 157 /* */ 158 static 159 void translate_array( FT_UInt n, 160 FT_Vector* coords, 161 FT_Pos delta_x, 162 FT_Pos delta_y ) 163 { 164 FT_UInt k; 165 166 167 if ( delta_x ) 168 for ( k = 0; k < n; k++ ) 169 coords[k].x += delta_x; 170 171 if ( delta_y ) 172 for ( k = 0; k < n; k++ ) 173 coords[k].y += delta_y; 174 } 175 176 177 static 178 void tt_prepare_zone( TT_GlyphZone* zone, 179 FT_GlyphLoad* load, 180 FT_UInt start_point, 181 FT_UInt start_contour ) 182 { 183 zone->n_points = (FT_UShort)( load->outline.n_points - start_point ); 184 zone->n_contours = (FT_Short) ( load->outline.n_contours - start_contour ); 185 zone->org = load->extra_points + start_point; 186 zone->cur = load->outline.points + start_point; 187 zone->tags = (FT_Byte*)load->outline.tags + start_point; 188 zone->contours = (FT_UShort*)load->outline.contours + start_contour; 189 } 190 191 192#undef IS_HINTED 193#define IS_HINTED( flags ) ( ( flags & FT_LOAD_NO_HINTING ) == 0 ) 194 195 196 /*************************************************************************/ 197 /* */ 198 /* The following functions are used by default with TrueType fonts. */ 199 /* However, they can be replaced by alternatives if we need to support */ 200 /* TrueType-compressed formats (like MicroType) in the future. */ 201 /* */ 202 /*************************************************************************/ 203 204 FT_CALLBACK_DEF(FT_Error) 205 TT_Access_Glyph_Frame( TT_Loader* loader, 206 FT_UInt glyph_index, 207 FT_ULong offset, 208 FT_UInt byte_count ) 209 { 210 FT_Error error; 211 FT_Stream stream = loader->stream; 212 213 /* for non-debug mode */ 214 FT_UNUSED( glyph_index ); 215 216 217 FT_TRACE5(( "Glyph %ld\n", glyph_index )); 218 219 /* the following line sets the `error' variable through macros! */ 220 if ( FILE_Seek( offset ) || ACCESS_Frame( byte_count ) ) 221 return error; 222 223 return TT_Err_Ok; 224 } 225 226 227 FT_CALLBACK_DEF(void) 228 TT_Forget_Glyph_Frame( TT_Loader* loader ) 229 { 230 FT_Stream stream = loader->stream; 231 232 233 FORGET_Frame(); 234 } 235 236 237 FT_CALLBACK_DEF(FT_Error) 238 TT_Load_Glyph_Header( TT_Loader* loader ) 239 { 240 FT_Stream stream = loader->stream; 241 242 243 loader->n_contours = GET_Short(); 244 245 loader->bbox.xMin = GET_Short(); 246 loader->bbox.yMin = GET_Short(); 247 loader->bbox.xMax = GET_Short(); 248 loader->bbox.yMax = GET_Short(); 249 250 FT_TRACE5(( " # of contours: %d\n", loader->n_contours )); 251 FT_TRACE5(( " xMin: %4d xMax: %4d\n", loader->bbox.xMin, 252 loader->bbox.xMax )); 253 FT_TRACE5(( " yMin: %4d yMax: %4d\n", loader->bbox.yMin, 254 loader->bbox.yMax )); 255 256 return TT_Err_Ok; 257 } 258 259 260 FT_CALLBACK_DEF(FT_Error) 261 TT_Load_Simple_Glyph( TT_Loader* load ) 262 { 263 FT_Error error; 264 FT_Stream stream = load->stream; 265 FT_GlyphLoader* gloader = load->gloader; 266 FT_Int n_contours = load->n_contours; 267 FT_Outline* outline; 268 TT_Face face = (TT_Face)load->face; 269 TT_GlyphSlot slot = (TT_GlyphSlot)load->glyph; 270 FT_UShort n_ins; 271 FT_Int n, n_points; 272 273 274 /* reading the contours endpoints & number of points */ 275 { 276 short* cur = gloader->current.outline.contours; 277 short* limit = cur + n_contours; 278 279 280 for ( ; cur < limit; cur++ ) 281 cur[0] = GET_UShort(); 282 283 n_points = 0; 284 if ( n_contours > 0 ) 285 n_points = cur[-1] + 1; 286 287 error = FT_GlyphLoader_Check_Points( gloader, n_points + 2, 0 ); 288 if ( error ) 289 goto Fail; 290 291 outline = &gloader->current.outline; 292 } 293 294 /* reading the bytecode instructions */ 295 slot->control_len = 0; 296 slot->control_data = 0; 297 298 n_ins = GET_UShort(); 299 300 FT_TRACE5(( " Instructions size: %d\n", n_ins )); 301 302 if ( n_ins > face->max_profile.maxSizeOfInstructions ) 303 { 304 FT_TRACE0(( "ERROR: Too many instructions!\n" )); 305 error = TT_Err_Too_Many_Hints; 306 goto Fail; 307 } 308 309 if ( stream->cursor + n_ins > stream->limit ) 310 { 311 FT_TRACE0(( "ERROR: Instruction count mismatch!\n" )); 312 error = TT_Err_Too_Many_Hints; 313 goto Fail; 314 } 315 316#ifdef TT_CONFIG_OPTION_BYTECODE_INTERPRETER 317 318 if ( ( load->load_flags & 319 ( FT_LOAD_NO_SCALE | FT_LOAD_NO_HINTING ) ) == 0 && 320 load->instructions ) 321 { 322 slot->control_len = n_ins; 323 slot->control_data = load->instructions; 324 325 MEM_Copy( load->instructions, stream->cursor, n_ins ); 326 } 327 328#endif /* TT_CONFIG_OPTION_BYTECODE_INTERPRETER */ 329 330 stream->cursor += n_ins; 331 332 /* reading the point tags */ 333 334 { 335 FT_Byte* flag = (FT_Byte*)outline->tags; 336 FT_Byte* limit = flag + n_points; 337 FT_Byte c, count; 338 339 340 for ( ; flag < limit; flag++ ) 341 { 342 *flag = c = GET_Byte(); 343 if ( c & 8 ) 344 { 345 for ( count = GET_Byte(); count > 0; count-- ) 346 *++flag = c; 347 } 348 } 349 } 350 351 /* reading the X coordinates */ 352 353 { 354 FT_Vector* vec = outline->points; 355 FT_Vector* limit = vec + n_points; 356 FT_Byte* flag = (FT_Byte*)outline->tags; 357 FT_Pos x = 0; 358 359 360 for ( ; vec < limit; vec++, flag++ ) 361 { 362 FT_Pos y = 0; 363 364 365 if ( *flag & 2 ) 366 { 367 y = GET_Byte(); 368 if ( ( *flag & 16 ) == 0 ) 369 y = -y; 370 } 371 else if ( ( *flag & 16 ) == 0 ) 372 y = GET_Short(); 373 374 x += y; 375 vec->x = x; 376 } 377 } 378 379 /* reading the Y coordinates */ 380 381 { 382 FT_Vector* vec = gloader->current.outline.points; 383 FT_Vector* limit = vec + n_points; 384 FT_Byte* flag = (FT_Byte*)outline->tags; 385 FT_Pos x = 0; 386 387 388 for ( ; vec < limit; vec++, flag++ ) 389 { 390 FT_Pos y = 0; 391 392 393 if ( *flag & 4 ) 394 { 395 y = GET_Byte(); 396 if ( ( *flag & 32 ) == 0 ) 397 y = -y; 398 } 399 else if ( ( *flag & 32 ) == 0 ) 400 y = GET_Short(); 401 402 x += y; 403 vec->y = x; 404 } 405 } 406 407 /* clear the touch tags */ 408 for ( n = 0; n < n_points; n++ ) 409 outline->tags[n] &= FT_Curve_Tag_On; 410 411 outline->n_points = (FT_UShort)n_points; 412 outline->n_contours = (FT_Short) n_contours; 413 414 Fail: 415 return error; 416 } 417 418 419 FT_CALLBACK_DEF(FT_Error) 420 TT_Load_Composite_Glyph( TT_Loader* loader ) 421 { 422 FT_Error error; 423 FT_Stream stream = loader->stream; 424 FT_GlyphLoader* gloader = loader->gloader; 425 FT_SubGlyph* subglyph; 426 FT_UInt num_subglyphs; 427 428 429 num_subglyphs = 0; 430 431 do 432 { 433 FT_Fixed xx, xy, yy, yx; 434 435 436 /* check that we can load a new subglyph */ 437 error = FT_GlyphLoader_Check_Subglyphs( gloader, num_subglyphs + 1 ); 438 if ( error ) 439 goto Fail; 440 441 subglyph = gloader->current.subglyphs + num_subglyphs; 442 443 subglyph->arg1 = subglyph->arg2 = 0; 444 445 subglyph->flags = GET_UShort(); 446 subglyph->index = GET_UShort(); 447 448 /* read arguments */ 449 if ( subglyph->flags & ARGS_ARE_WORDS ) 450 { 451 subglyph->arg1 = GET_Short(); 452 subglyph->arg2 = GET_Short(); 453 } 454 else 455 { 456 subglyph->arg1 = GET_Char(); 457 subglyph->arg2 = GET_Char(); 458 } 459 460 /* read transform */ 461 xx = yy = 0x10000L; 462 xy = yx = 0; 463 464 if ( subglyph->flags & WE_HAVE_A_SCALE ) 465 { 466 xx = (FT_Fixed)GET_Short() << 2; 467 yy = xx; 468 } 469 else if ( subglyph->flags & WE_HAVE_AN_XY_SCALE ) 470 { 471 xx = (FT_Fixed)GET_Short() << 2; 472 yy = (FT_Fixed)GET_Short() << 2; 473 } 474 else if ( subglyph->flags & WE_HAVE_A_2X2 ) 475 { 476 xx = (FT_Fixed)GET_Short() << 2; 477 xy = (FT_Fixed)GET_Short() << 2; 478 yx = (FT_Fixed)GET_Short() << 2; 479 yy = (FT_Fixed)GET_Short() << 2; 480 } 481 482 subglyph->transform.xx = xx; 483 subglyph->transform.xy = xy; 484 subglyph->transform.yx = yx; 485 subglyph->transform.yy = yy; 486 487 num_subglyphs++; 488 489 } while ( subglyph->flags & MORE_COMPONENTS ); 490 491 gloader->current.num_subglyphs = num_subglyphs; 492 493#ifdef TT_CONFIG_OPTION_BYTECODE_INTERPRETER 494 { 495 /* we must undo the ACCESS_Frame in order to point to the */ 496 /* composite instructions, if we find some. */ 497 /* we will process them later... */ 498 /* */ 499 loader->ins_pos = (FT_ULong)( FILE_Pos() + 500 stream->cursor - stream->limit ); 501 } 502#endif 503 504 Fail: 505 return error; 506 } 507 508 509 FT_LOCAL_DEF 510 void TT_Init_Glyph_Loading( TT_Face face ) 511 { 512 face->access_glyph_frame = TT_Access_Glyph_Frame; 513 face->read_glyph_header = TT_Load_Glyph_Header; 514 face->read_simple_glyph = TT_Load_Simple_Glyph; 515 face->read_composite_glyph = TT_Load_Composite_Glyph; 516 face->forget_glyph_frame = TT_Forget_Glyph_Frame; 517 } 518 519 520 /*************************************************************************/ 521 /* */ 522 /* <Function> */ 523 /* TT_Process_Simple_Glyph */ 524 /* */ 525 /* <Description> */ 526 /* Once a simple glyph has been loaded, it needs to be processed. */ 527 /* Usually, this means scaling and hinting through bytecode */ 528 /* interpretation. */ 529 /* */ 530 static 531 FT_Error TT_Process_Simple_Glyph( TT_Loader* load, 532 FT_Bool debug ) 533 { 534 FT_GlyphLoader* gloader = load->gloader; 535 FT_Outline* outline = &gloader->current.outline; 536 FT_UInt n_points = outline->n_points; 537 FT_UInt n_ins; 538 TT_GlyphZone* zone = &load->zone; 539 FT_Error error = TT_Err_Ok; 540 541 FT_UNUSED( debug ); /* used by truetype interpreter only */ 542 543 544 n_ins = load->glyph->control_len; 545 546 /* add shadow points */ 547 548 /* Now add the two shadow points at n and n + 1. */ 549 /* We need the left side bearing and advance width. */ 550 551 { 552 FT_Vector* pp1; 553 FT_Vector* pp2; 554 555 556 /* pp1 = xMin - lsb */ 557 pp1 = outline->points + n_points; 558 pp1->x = load->bbox.xMin - load->left_bearing; 559 pp1->y = 0; 560 561 /* pp2 = pp1 + aw */ 562 pp2 = pp1 + 1; 563 pp2->x = pp1->x + load->advance; 564 pp2->y = 0; 565 566 outline->tags[n_points ] = 0; 567 outline->tags[n_points + 1] = 0; 568 } 569 570 /* Note that we return two more points that are not */ 571 /* part of the glyph outline. */ 572 573 n_points += 2; 574 575 /* set up zone for hinting */ 576 tt_prepare_zone( zone, &gloader->current, 0, 0 ); 577 578 /* eventually scale the glyph */ 579 if ( !( load->load_flags & FT_LOAD_NO_SCALE ) ) 580 { 581 FT_Vector* vec = zone->cur; 582 FT_Vector* limit = vec + n_points; 583 FT_Fixed x_scale = load->size->metrics.x_scale; 584 FT_Fixed y_scale = load->size->metrics.y_scale; 585 586 587 /* first scale the glyph points */ 588 for ( ; vec < limit; vec++ ) 589 { 590 vec->x = FT_MulFix( vec->x, x_scale ); 591 vec->y = FT_MulFix( vec->y, y_scale ); 592 } 593 } 594 595 cur_to_org( n_points, zone ); 596 597 /* eventually hint the glyph */ 598 if ( IS_HINTED( load->load_flags ) ) 599 { 600 FT_Pos x = zone->org[n_points-2].x; 601 602 603 x = ( ( x + 32 ) & -64 ) - x; 604 translate_array( n_points, zone->org, x, 0 ); 605 606 org_to_cur( n_points, zone ); 607 608 zone->cur[n_points - 1].x = ( zone->cur[n_points - 1].x + 32 ) & -64; 609 610#ifdef TT_CONFIG_OPTION_BYTECODE_INTERPRETER 611 612 /* now consider hinting */ 613 if ( n_ins > 0 ) 614 { 615 error = TT_Set_CodeRange( load->exec, tt_coderange_glyph, 616 load->exec->glyphIns, n_ins ); 617 if ( error ) 618 goto Exit; 619 620 load->exec->is_composite = FALSE; 621 load->exec->pedantic_hinting = (FT_Bool)( load->load_flags & 622 FT_LOAD_PEDANTIC ); 623 load->exec->pts = *zone; 624 load->exec->pts.n_points += 2; 625 626 error = TT_Run_Context( load->exec, debug ); 627 if ( error && load->exec->pedantic_hinting ) 628 goto Exit; 629 630 error = TT_Err_Ok; /* ignore bytecode errors in non-pedantic mode */ 631 } 632 633#endif /* TT_CONFIG_OPTION_BYTECODE_INTERPRETER */ 634 635 } 636 637 /* save glyph phantom points */ 638 if ( !load->preserve_pps ) 639 { 640 load->pp1 = zone->cur[n_points - 2]; 641 load->pp2 = zone->cur[n_points - 1]; 642 } 643 644#ifdef TT_CONFIG_OPTION_BYTECODE_INTERPRETER 645 Exit: 646#endif 647 return error; 648 } 649 650 651 /*************************************************************************/ 652 /* */ 653 /* <Function> */ 654 /* load_truetype_glyph */ 655 /* */ 656 /* <Description> */ 657 /* Loads a given truetype glyph. Handles composites and uses a */ 658 /* TT_Loader object. */ 659 /* */ 660 static 661 FT_Error load_truetype_glyph( TT_Loader* loader, 662 FT_UInt glyph_index ) 663 { 664 665#ifdef TT_CONFIG_OPTION_BYTECODE_INTERPRETER 666 FT_Stream stream = loader->stream; 667#endif 668 669 FT_Error error; 670 TT_Face face = (TT_Face)loader->face; 671 FT_ULong offset; 672 FT_Int contours_count; 673 FT_UInt index, num_points, count; 674 FT_Fixed x_scale, y_scale; 675 FT_GlyphLoader* gloader = loader->gloader; 676 FT_Bool opened_frame = 0; 677 678 679 /* check glyph index */ 680 index = glyph_index; 681 if ( index >= (FT_UInt)face->root.num_glyphs ) 682 { 683 error = TT_Err_Invalid_Glyph_Index; 684 goto Exit; 685 } 686 687 loader->glyph_index = glyph_index; 688 num_points = 0; 689 690 x_scale = 0x10000L; 691 y_scale = 0x10000L; 692 if ( ( loader->load_flags & FT_LOAD_NO_SCALE ) == 0 ) 693 { 694 x_scale = loader->size->metrics.x_scale; 695 y_scale = loader->size->metrics.y_scale; 696 } 697 698 /* get horizontal metrics */ 699 { 700 FT_Short left_bearing; 701 FT_UShort advance_width; 702 703 704 Get_HMetrics( face, index, 705 (FT_Bool)!(loader->load_flags & 706 FT_LOAD_IGNORE_GLOBAL_ADVANCE_WIDTH), 707 &left_bearing, 708 &advance_width ); 709 710 loader->left_bearing = left_bearing; 711 loader->advance = advance_width; 712 713 if ( !loader->linear_def ) 714 { 715 loader->linear_def = 1; 716 loader->linear = advance_width; 717 } 718 } 719 720 offset = face->glyph_locations[index]; 721 count = 0; 722 723 if ( index < (FT_UInt)face->num_locations - 1 ) 724 count = face->glyph_locations[index + 1] - offset; 725 726 if ( count == 0 ) 727 { 728 /* as described by Frederic Loyer, these are spaces, and */ 729 /* not the unknown glyph. */ 730 loader->bbox.xMin = 0; 731 loader->bbox.xMax = 0; 732 loader->bbox.yMin = 0; 733 loader->bbox.yMax = 0; 734 735 loader->pp1.x = 0; 736 loader->pp2.x = loader->advance; 737 738 if ( ( loader->load_flags & FT_LOAD_NO_SCALE ) == 0 ) 739 loader->pp2.x = FT_MulFix( loader->pp2.x, x_scale ); 740 741#ifdef TT_CONFIG_OPTION_BYTECODE_INTERPRETER 742 743 if ( loader->exec ) 744 loader->exec->glyphSize = 0; 745 746#endif 747 748 error = TT_Err_Ok; 749 goto Exit; 750 } 751 752 offset = loader->glyf_offset + offset; 753 754 /* access glyph frame */ 755 error = face->access_glyph_frame( loader, glyph_index, offset, count ); 756 if ( error ) 757 goto Exit; 758 759 opened_frame = 1; 760 761 /* read first glyph header */ 762 error = face->read_glyph_header( loader ); 763 if ( error ) 764 goto Fail; 765 766 contours_count = loader->n_contours; 767 768 count -= 10; 769 770 loader->pp1.x = loader->bbox.xMin - loader->left_bearing; 771 loader->pp1.y = 0; 772 loader->pp2.x = loader->pp1.x + loader->advance; 773 loader->pp2.y = 0; 774 775 if ( ( loader->load_flags & FT_LOAD_NO_SCALE ) == 0 ) 776 { 777 loader->pp1.x = FT_MulFix( loader->pp1.x, x_scale ); 778 loader->pp2.x = FT_MulFix( loader->pp2.x, x_scale ); 779 } 780 781 /***********************************************************************/ 782 /***********************************************************************/ 783 /***********************************************************************/ 784 785 /* if it is a simple glyph, load it */ 786 787 if ( contours_count >= 0 ) 788 { 789 /* check that we can add the contours to the glyph */ 790 error = FT_GlyphLoader_Check_Points( gloader, 0, contours_count ); 791 if ( error ) 792 goto Fail; 793 794 error = face->read_simple_glyph( loader ); 795 if ( error ) 796 goto Fail; 797 798#ifdef TT_CONFIG_OPTION_BYTECODE_INTERPRETER 799 800 { 801 TT_Size size = (TT_Size)loader->size; 802 803 804 error = TT_Process_Simple_Glyph( loader, 805 (FT_Bool)( size && size->debug ) ); 806 } 807 808#else 809 810 error = TT_Process_Simple_Glyph( loader, 0 ); 811 812#endif 813 814 if ( error ) 815 goto Fail; 816 817 FT_GlyphLoader_Add( gloader ); 818 819 /* Note: We could have put the simple loader source there */ 820 /* but the code is fat enough already :-) */ 821 } 822 823 /***********************************************************************/ 824 /***********************************************************************/ 825 /***********************************************************************/ 826 827 /* otherwise, load a composite! */ 828 else 829 { 830 TT_GlyphSlot glyph = (TT_GlyphSlot)loader->glyph; 831 FT_UInt start_point, start_contour; 832 FT_ULong ins_pos; /* position of composite instructions, if any */ 833 834 835 /* for each subglyph, read composite header */ 836 start_point = gloader->base.outline.n_points; 837 start_contour = gloader->base.outline.n_contours; 838 839 error = face->read_composite_glyph( loader ); 840 if ( error ) 841 goto Fail; 842 843 ins_pos = loader->ins_pos; 844 face->forget_glyph_frame( loader ); 845 opened_frame = 0; 846 847 /* if the flag FT_LOAD_NO_RECURSE is set, we return the subglyph */ 848 /* `as is' in the glyph slot (the client application will be */ 849 /* responsible for interpreting this data)... */ 850 /* */ 851 if ( loader->load_flags & FT_LOAD_NO_RECURSE ) 852 { 853 /* set up remaining glyph fields */ 854 FT_GlyphLoader_Add( gloader ); 855 856 glyph->num_subglyphs = gloader->base.num_subglyphs; 857 glyph->format = ft_glyph_format_composite; 858 glyph->subglyphs = gloader->base.subglyphs; 859 860 goto Exit; 861 } 862 863 /*********************************************************************/ 864 /*********************************************************************/ 865 /*********************************************************************/ 866 867 /* Now, read each subglyph independently. */ 868 { 869 FT_Int n, num_base_points, num_new_points; 870 FT_SubGlyph* subglyph = 0; 871 872 FT_UInt num_subglyphs = gloader->current.num_subglyphs; 873 FT_UInt num_base_subgs = gloader->base.num_subglyphs; 874 875 876 FT_GlyphLoader_Add( gloader ); 877 878 for ( n = 0; n < (FT_Int)num_subglyphs; n++ ) 879 { 880 FT_Vector pp1, pp2; 881 FT_Pos x, y; 882 883 884 /* Each time we call load_truetype_glyph in this loop, the */ 885 /* value of `gloader.base.subglyphs' can change due to table */ 886 /* reallocations. We thus need to recompute the subglyph */ 887 /* pointer on each iteration. */ 888 subglyph = gloader->base.subglyphs + num_base_subgs + n; 889 890 pp1 = loader->pp1; 891 pp2 = loader->pp2; 892 893 num_base_points = gloader->base.outline.n_points; 894 895 error = load_truetype_glyph( loader, subglyph->index ); 896 if ( error ) 897 goto Fail; 898 899 /* restore subglyph pointer */ 900 subglyph = gloader->base.subglyphs + num_base_subgs + n; 901 902 if ( subglyph->flags & USE_MY_METRICS ) 903 { 904 pp1 = loader->pp1; 905 pp2 = loader->pp2; 906 } 907 else 908 { 909 loader->pp1 = pp1; 910 loader->pp2 = pp2; 911 } 912 913 num_points = gloader->base.outline.n_points; 914 915 num_new_points = num_points - num_base_points; 916 917 /* now perform the transform required for this subglyph */ 918 919 if ( subglyph->flags & ( WE_HAVE_A_SCALE | 920 WE_HAVE_AN_XY_SCALE | 921 WE_HAVE_A_2X2 ) ) 922 { 923 FT_Vector* cur = gloader->base.outline.points + 924 num_base_points; 925 FT_Vector* org = gloader->base.extra_points + 926 num_base_points; 927 FT_Vector* limit = cur + num_new_points; 928 929 930 for ( ; cur < limit; cur++, org++ ) 931 { 932 FT_Vector_Transform( cur, &subglyph->transform ); 933 FT_Vector_Transform( org, &subglyph->transform ); 934 } 935 } 936 937 /* apply offset */ 938 939 if ( !( subglyph->flags & ARGS_ARE_XY_VALUES ) ) 940 { 941 FT_UInt k = subglyph->arg1; 942 FT_UInt l = subglyph->arg2; 943 FT_Vector* p1; 944 FT_Vector* p2; 945 946 947 if ( start_point + k >= (FT_UInt)num_base_points || 948 l >= (FT_UInt)num_new_points ) 949 { 950 error = TT_Err_Invalid_Composite; 951 goto Fail; 952 } 953 954 l += num_base_points; 955 956 p1 = gloader->base.outline.points + start_point + k; 957 p2 = gloader->base.outline.points + start_point + l; 958 959 x = p1->x - p2->x; 960 y = p1->y - p2->y; 961 } 962 else 963 { 964 x = subglyph->arg1; 965 y = subglyph->arg2; 966 967 if ( !( loader->load_flags & FT_LOAD_NO_SCALE ) ) 968 { 969 x = FT_MulFix( x, x_scale ); 970 y = FT_MulFix( y, y_scale ); 971 972 if ( subglyph->flags & ROUND_XY_TO_GRID ) 973 { 974 x = ( x + 32 ) & -64; 975 y = ( y + 32 ) & -64; 976 } 977 } 978 } 979 980 if ( x | y ) 981 { 982 translate_array( num_new_points, 983 gloader->base.outline.points + num_base_points, 984 x, y ); 985 986 translate_array( num_new_points, 987 gloader->base.extra_points + num_base_points, 988 x, y ); 989 } 990 } 991 992 /*******************************************************************/ 993 /*******************************************************************/ 994 /*******************************************************************/ 995 996 /* we have finished loading all sub-glyphs; now, look for */ 997 /* instructions for this composite! */ 998 999#ifdef TT_CONFIG_OPTION_BYTECODE_INTERPRETER 1000 1001 if ( num_subglyphs > 0 && 1002 loader->exec && 1003 ins_pos > 0 && 1004 subglyph->flags & WE_HAVE_INSTR ) 1005 { 1006 FT_UShort n_ins; 1007 TT_ExecContext exec = loader->exec; 1008 TT_GlyphZone* pts; 1009 FT_Vector* pp1; 1010 1011 1012 /* read size of instructions */ 1013 if ( FILE_Seek( ins_pos ) || 1014 READ_UShort( n_ins ) ) 1015 goto Fail; 1016 FT_TRACE5(( " Instructions size = %d\n", n_ins )); 1017 1018 /* in some fonts? */ 1019 if ( n_ins == 0xFFFF ) 1020 n_ins = 0; 1021 1022 /* check it */ 1023 if ( n_ins > face->max_profile.maxSizeOfInstructions ) 1024 { 1025 FT_TRACE0(( "Too many instructions (%d) in composite glyph %ld\n", 1026 n_ins, subglyph->index )); 1027 return TT_Err_Too_Many_Hints; 1028 } 1029 1030 /* read the instructions */ 1031 if ( FILE_Read( exec->glyphIns, n_ins ) ) 1032 goto Fail; 1033 1034 glyph->control_data = exec->glyphIns; 1035 glyph->control_len = n_ins; 1036 1037 error = TT_Set_CodeRange( exec, 1038 tt_coderange_glyph, 1039 exec->glyphIns, 1040 n_ins ); 1041 if ( error ) 1042 goto Fail; 1043 1044 /* prepare the execution context */ 1045 tt_prepare_zone( &exec->pts, &gloader->base, 1046 start_point, start_contour ); 1047 pts = &exec->pts; 1048 1049 pts->n_points = num_points + 2; 1050 pts->n_contours = gloader->base.outline.n_contours; 1051 1052 /* add phantom points */ 1053 pp1 = pts->cur + num_points; 1054 pp1[0] = loader->pp1; 1055 pp1[1] = loader->pp2; 1056 1057 pts->tags[num_points ] = 0; 1058 pts->tags[num_points + 1] = 0; 1059 1060 /* if hinting, round the phantom points */ 1061 if ( IS_HINTED( loader->load_flags ) ) 1062 { 1063 pp1[0].x = ( ( loader->pp1.x + 32 ) & -64 ); 1064 pp1[1].x = ( ( loader->pp2.x + 32 ) & -64 ); 1065 } 1066 1067 { 1068 FT_UInt k; 1069 1070 1071 for ( k = 0; k < num_points; k++ ) 1072 pts->tags[k] &= FT_Curve_Tag_On; 1073 } 1074 1075 cur_to_org( num_points + 2, pts ); 1076 1077 /* now consider hinting */ 1078 if ( IS_HINTED( loader->load_flags ) && n_ins > 0 ) 1079 { 1080 exec->is_composite = TRUE; 1081 exec->pedantic_hinting = 1082 (FT_Bool)( loader->load_flags & FT_LOAD_PEDANTIC ); 1083 1084 error = TT_Run_Context( exec, ((TT_Size)loader->size)->debug ); 1085 if ( error && exec->pedantic_hinting ) 1086 goto Fail; 1087 } 1088 1089 /* save glyph origin and advance points */ 1090 loader->pp1 = pp1[0]; 1091 loader->pp2 = pp1[1]; 1092 } 1093 1094#endif /* TT_CONFIG_OPTION_BYTECODE_INTERPRETER */ 1095 1096 } 1097 /* end of composite loading */ 1098 } 1099 1100 /***********************************************************************/ 1101 /***********************************************************************/ 1102 /***********************************************************************/ 1103 1104 Fail: 1105 if ( opened_frame ) 1106 face->forget_glyph_frame( loader ); 1107 1108 Exit: 1109 return error; 1110 } 1111 1112 1113 static 1114 void compute_glyph_metrics( TT_Loader* loader, 1115 FT_UInt glyph_index ) 1116 { 1117 FT_BBox bbox; 1118 TT_Face face = (TT_Face)loader->face; 1119 FT_Fixed y_scale; 1120 TT_GlyphSlot glyph = loader->glyph; 1121 TT_Size size = (TT_Size)loader->size; 1122 1123 1124 y_scale = 0x10000L; 1125 if ( ( loader->load_flags & FT_LOAD_NO_SCALE ) == 0 ) 1126 y_scale = size->root.metrics.y_scale; 1127 1128 if ( glyph->format != ft_glyph_format_composite ) 1129 { 1130 glyph->outline.flags &= ~ft_outline_single_pass; 1131 1132 /* copy outline to our glyph slot */ 1133 FT_GlyphLoader_Copy_Points( glyph->internal->loader, loader->gloader ); 1134 glyph->outline = glyph->internal->loader->base.outline; 1135 1136 /* translate array so that (0,0) is the glyph's origin */ 1137 FT_Outline_Translate( &glyph->outline, -loader->pp1.x, 0 ); 1138 1139 FT_Outline_Get_CBox( &glyph->outline, &bbox ); 1140 1141 if ( IS_HINTED( loader->load_flags ) ) 1142 { 1143 /* grid-fit the bounding box */ 1144 bbox.xMin &= -64; 1145 bbox.yMin &= -64; 1146 bbox.xMax = ( bbox.xMax + 63 ) & -64; 1147 bbox.yMax = ( bbox.yMax + 63 ) & -64; 1148 } 1149 } 1150 else 1151 bbox = loader->bbox; 1152 1153 /* get the device-independent horizontal advance. It is scaled later */ 1154 /* by the base layer. */ 1155 { 1156 FT_Pos advance = loader->linear; 1157 1158 1159 /* the flag FT_LOAD_IGNORE_GLOBAL_ADVANCE_WIDTH was introduced to */ 1160 /* correctly support DynaLab fonts, which have an incorrect */ 1161 /* `advance_Width_Max' field! It is used, to my knowledge, */ 1162 /* exclusively in the X-TrueType font server. */ 1163 /* */ 1164 if ( face->postscript.isFixedPitch && 1165 ( loader->load_flags & FT_LOAD_IGNORE_GLOBAL_ADVANCE_WIDTH ) == 0 ) 1166 advance = face->horizontal.advance_Width_Max; 1167 1168 /* we need to return the advance in font units in linearHoriAdvance, */ 1169 /* it will be scaled later by the base layer. */ 1170 glyph->linearHoriAdvance = advance; 1171 } 1172 1173 glyph->metrics.horiBearingX = bbox.xMin; 1174 glyph->metrics.horiBearingY = bbox.yMax; 1175 glyph->metrics.horiAdvance = loader->pp2.x - loader->pp1.x; 1176 1177 /* Now take care of vertical metrics. In the case where there is */ 1178 /* no vertical information within the font (relatively common), make */ 1179 /* up some metrics by `hand'... */ 1180 1181 { 1182 FT_Short top_bearing; /* vertical top side bearing (EM units) */ 1183 FT_UShort advance_height; /* vertical advance height (EM units) */ 1184 1185 FT_Pos left; /* scaled vertical left side bearing */ 1186 FT_Pos top; /* scaled vertical top side bearing */ 1187 FT_Pos advance; /* scaled vertical advance height */ 1188 1189 1190 /* Get the unscaled `tsb' and `ah' */ 1191 if ( face->vertical_info && 1192 face->vertical.number_Of_VMetrics > 0 ) 1193 { 1194 /* Don't assume that both the vertical header and vertical */ 1195 /* metrics are present in the same font :-) */ 1196 1197 TT_Get_Metrics( (TT_HoriHeader*)&face->vertical, 1198 glyph_index, 1199 &top_bearing, 1200 &advance_height ); 1201 } 1202 else 1203 { 1204 /* Make up the distances from the horizontal header. */ 1205 1206 /* NOTE: The OS/2 values are the only `portable' ones, */ 1207 /* which is why we use them, if there is an OS/2 */ 1208 /* table in the font. Otherwise, we use the */ 1209 /* values defined in the horizontal header. */ 1210 /* */ 1211 /* NOTE2: The sTypoDescender is negative, which is why */ 1212 /* we compute the baseline-to-baseline distance */ 1213 /* here with: */ 1214 /* ascender - descender + linegap */ 1215 /* */ 1216 if ( face->os2.version != 0xFFFF ) 1217 { 1218 top_bearing = (FT_Short)( face->os2.sTypoLineGap / 2 ); 1219 advance_height = (FT_UShort)( face->os2.sTypoAscender - 1220 face->os2.sTypoDescender + 1221 face->os2.sTypoLineGap ); 1222 } 1223 else 1224 { 1225 top_bearing = (FT_Short)( face->horizontal.Line_Gap / 2 ); 1226 advance_height = (FT_UShort)( face->horizontal.Ascender + 1227 face->horizontal.Descender + 1228 face->horizontal.Line_Gap ); 1229 } 1230 } 1231 1232 /* We must adjust the top_bearing value from the bounding box given */ 1233 /* in the glyph header to te bounding box calculated with */ 1234 /* FT_Get_Outline_CBox(). */ 1235 1236 /* scale the metrics */ 1237 if ( !( loader->load_flags & FT_LOAD_NO_SCALE ) ) 1238 { 1239 top = FT_MulFix( top_bearing + loader->bbox.yMax, y_scale ) 1240 - bbox.yMax; 1241 advance = FT_MulFix( advance_height, y_scale ); 1242 } 1243 else 1244 { 1245 top = top_bearing + loader->bbox.yMax - bbox.yMax; 1246 advance = advance_height; 1247 } 1248 1249 /* set the advance height in design units. It is scaled later by */ 1250 /* the base layer. */ 1251 glyph->linearVertAdvance = advance_height; 1252 1253 /* XXX: for now, we have no better algorithm for the lsb, but it */ 1254 /* should work fine. */ 1255 /* */ 1256 left = ( bbox.xMin - bbox.xMax ) / 2; 1257 1258 /* grid-fit them if necessary */ 1259 if ( IS_HINTED( loader->load_flags ) ) 1260 { 1261 left &= -64; 1262 top = ( top + 63 ) & -64; 1263 advance = ( advance + 32 ) & -64; 1264 } 1265 1266 glyph->metrics.vertBearingX = left; 1267 glyph->metrics.vertBearingY = top; 1268 glyph->metrics.vertAdvance = advance; 1269 } 1270 1271 /* adjust advance width to the value contained in the hdmx table */ 1272 if ( !face->postscript.isFixedPitch && size && 1273 IS_HINTED( loader->load_flags ) ) 1274 { 1275 FT_Byte* widths = Get_Advance_Widths( face, 1276 size->root.metrics.x_ppem ); 1277 1278 1279 if ( widths ) 1280 glyph->metrics.horiAdvance = widths[glyph_index] << 6; 1281 } 1282 1283 /* set glyph dimensions */ 1284 glyph->metrics.width = bbox.xMax - bbox.xMin; 1285 glyph->metrics.height = bbox.yMax - bbox.yMin; 1286 } 1287 1288 1289 /*************************************************************************/ 1290 /* */ 1291 /* <Function> */ 1292 /* TT_Load_Glyph */ 1293 /* */ 1294 /* <Description> */ 1295 /* A function used to load a single glyph within a given glyph slot, */ 1296 /* for a given size. */ 1297 /* */ 1298 /* <Input> */ 1299 /* glyph :: A handle to a target slot object where the glyph */ 1300 /* will be loaded. */ 1301 /* */ 1302 /* size :: A handle to the source face size at which the glyph */ 1303 /* must be scaled/loaded. */ 1304 /* */ 1305 /* glyph_index :: The index of the glyph in the font file. */ 1306 /* */ 1307 /* load_flags :: A flag indicating what to load for this glyph. The */ 1308 /* FT_LOAD_XXX constants can be used to control the */ 1309 /* glyph loading process (e.g., whether the outline */ 1310 /* should be scaled, whether to load bitmaps or not, */ 1311 /* whether to hint the outline, etc). */ 1312 /* */ 1313 /* <Return> */ 1314 /* FreeType error code. 0 means success. */ 1315 /* */ 1316 FT_LOCAL_DEF 1317 FT_Error TT_Load_Glyph( TT_Size size, 1318 TT_GlyphSlot glyph, 1319 FT_UShort glyph_index, 1320 FT_UInt load_flags ) 1321 { 1322 SFNT_Interface* sfnt; 1323 TT_Face face; 1324 FT_Stream stream; 1325 FT_Error error; 1326 TT_Loader loader; 1327 1328 1329 face = (TT_Face)glyph->face; 1330 sfnt = (SFNT_Interface*)face->sfnt; 1331 stream = face->root.stream; 1332 error = 0; 1333 1334 if ( !size || ( load_flags & FT_LOAD_NO_SCALE ) || 1335 ( load_flags & FT_LOAD_NO_RECURSE ) ) 1336 { 1337 size = NULL; 1338 load_flags |= FT_LOAD_NO_SCALE | 1339 FT_LOAD_NO_HINTING | 1340 FT_LOAD_NO_BITMAP; 1341 } 1342 1343 glyph->num_subglyphs = 0; 1344 1345#ifdef TT_CONFIG_OPTION_EMBEDDED_BITMAPS 1346 1347 /* try to load embedded bitmap if any */ 1348 /* */ 1349 /* XXX: The convention should be emphasized in */ 1350 /* the documents because it can be confusing. */ 1351 if ( size && 1352 size->strike_index != 0xFFFF && 1353 sfnt->load_sbits && 1354 ( load_flags & FT_LOAD_NO_BITMAP ) == 0 ) 1355 1356 { 1357 TT_SBit_Metrics metrics; 1358 1359 1360 error = sfnt->load_sbit_image( face, 1361 size->strike_index, 1362 glyph_index, 1363 load_flags, 1364 stream, 1365 &glyph->bitmap, 1366 &metrics ); 1367 if ( !error ) 1368 { 1369 glyph->outline.n_points = 0; 1370 glyph->outline.n_contours = 0; 1371 1372 glyph->metrics.width = (FT_Pos)metrics.width << 6; 1373 glyph->metrics.height = (FT_Pos)metrics.height << 6; 1374 1375 glyph->metrics.horiBearingX = (FT_Pos)metrics.horiBearingX << 6; 1376 glyph->metrics.horiBearingY = (FT_Pos)metrics.horiBearingY << 6; 1377 glyph->metrics.horiAdvance = (FT_Pos)metrics.horiAdvance << 6; 1378 1379 glyph->metrics.vertBearingX = (FT_Pos)metrics.vertBearingX << 6; 1380 glyph->metrics.vertBearingY = (FT_Pos)metrics.vertBearingY << 6; 1381 glyph->metrics.vertAdvance = (FT_Pos)metrics.vertAdvance << 6; 1382 1383 glyph->format = ft_glyph_format_bitmap; 1384 if ( load_flags & FT_LOAD_VERTICAL_LAYOUT ) 1385 { 1386 glyph->bitmap_left = metrics.vertBearingX; 1387 glyph->bitmap_top = metrics.vertBearingY; 1388 } 1389 else 1390 { 1391 glyph->bitmap_left = metrics.horiBearingX; 1392 glyph->bitmap_top = metrics.horiBearingY; 1393 } 1394 return error; 1395 } 1396 } 1397 1398#endif /* TT_CONFIG_OPTION_EMBEDDED_BITMAPS */ 1399 1400 /* seek to the beginning of the glyph table. For Type 42 fonts */ 1401 /* the table might be accessed from a Postscript stream or something */ 1402 /* else... */ 1403 1404 error = face->goto_table( face, TTAG_glyf, stream, 0 ); 1405 if ( error ) 1406 { 1407 FT_ERROR(( "TT_Load_Glyph: could not access glyph table\n" )); 1408 goto Exit; 1409 } 1410 1411 MEM_Set( &loader, 0, sizeof ( loader ) ); 1412 1413 /* update the glyph zone bounds */ 1414 { 1415 FT_GlyphLoader* gloader = FT_FACE_DRIVER(face)->glyph_loader; 1416 1417 1418 loader.gloader = gloader; 1419 1420 FT_GlyphLoader_Rewind( gloader ); 1421 1422 tt_prepare_zone( &loader.zone, &gloader->base, 0, 0 ); 1423 tt_prepare_zone( &loader.base, &gloader->base, 0, 0 ); 1424 } 1425 1426#ifdef TT_CONFIG_OPTION_BYTECODE_INTERPRETER 1427 1428 if ( size ) 1429 { 1430 /* query new execution context */ 1431 loader.exec = size->debug ? size->context : TT_New_Context( face ); 1432 if ( !loader.exec ) 1433 return TT_Err_Could_Not_Find_Context; 1434 1435 TT_Load_Context( loader.exec, face, size ); 1436 loader.instructions = loader.exec->glyphIns; 1437 1438 /* load default graphics state - if needed */ 1439 if ( size->GS.instruct_control & 2 ) 1440 loader.exec->GS = tt_default_graphics_state; 1441 } 1442 1443#endif /* TT_CONFIG_OPTION_BYTECODE_INTERPRETER */ 1444 1445 /* clear all outline flags, except the `owner' one */ 1446 glyph->outline.flags = 0; 1447 1448 if ( size && size->root.metrics.y_ppem < 24 ) 1449 glyph->outline.flags |= ft_outline_high_precision; 1450 1451 /* let's initialize the rest of our loader now */ 1452 1453 loader.load_flags = load_flags; 1454 1455 loader.face = (FT_Face)face; 1456 loader.size = (FT_Size)size; 1457 loader.glyph = (FT_GlyphSlot)glyph; 1458 loader.stream = stream; 1459 1460 loader.glyf_offset = FILE_Pos(); 1461 1462#ifdef TT_CONFIG_OPTION_BYTECODE_INTERPRETER 1463 1464 /* if the cvt program has disabled hinting, the argument */ 1465 /* is ignored. */ 1466 if ( size && ( size->GS.instruct_control & 1 ) ) 1467 loader.load_flags |= FT_LOAD_NO_HINTING; 1468 1469#endif /* TT_CONFIG_OPTION_BYTECODE_INTERPRETER */ 1470 1471 /* Main loading loop */ 1472 glyph->format = ft_glyph_format_outline; 1473 glyph->num_subglyphs = 0; 1474 error = load_truetype_glyph( &loader, glyph_index ); 1475 if ( !error ) 1476 compute_glyph_metrics( &loader, glyph_index ); 1477 1478#ifdef TT_CONFIG_OPTION_BYTECODE_INTERPRETER 1479 1480 if ( !size || !size->debug ) 1481 TT_Done_Context( loader.exec ); 1482 1483#endif /* TT_CONFIG_OPTION_BYTECODE_INTERPRETER */ 1484 1485 Exit: 1486 return error; 1487 } 1488 1489 1490/* END */ 1491