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169 <nav class="md-nav md-nav--primary" data-md-level="0"> 170 <label class="md-nav__title md-nav__title--site" for="__drawer"> 171 <a href="." title="FreeType-2.10.4 API Reference" class="md-nav__button md-logo"> 172 173 <img alt="logo" src="images/favico.ico" width="48" height="48"> 174 175 </a> 176 FreeType-2.10.4 API Reference 177 </label> 178 179 <ul class="md-nav__list" data-md-scrollfix> 180 181 182 183 184 185 186 <li class="md-nav__item"> 187 <a href="index.html" title="TOC" class="md-nav__link"> 188 TOC 189 </a> 190 </li> 191 192 193 194 195 196 197 198 <li class="md-nav__item"> 199 <a href="ft2-index.html" title="Index" class="md-nav__link"> 200 Index 201 </a> 202 </li> 203 204 205 206 207 208 209 210 <li class="md-nav__item md-nav__item--nested"> 211 212 <input class="md-toggle md-nav__toggle" data-md-toggle="nav-3" type="checkbox" id="nav-3"> 213 214 <label class="md-nav__link" for="nav-3"> 215 General Remarks 216 </label> 217 <nav class="md-nav" data-md-component="collapsible" data-md-level="1"> 218 <label class="md-nav__title" for="nav-3"> 219 General Remarks 220 </label> 221 <ul class="md-nav__list" data-md-scrollfix> 222 223 224 225 226 227 228 229 <li class="md-nav__item"> 230 <a href="ft2-header_inclusion.html" title="FreeType's header inclusion scheme" class="md-nav__link"> 231 FreeType's header inclusion scheme 232 </a> 233 </li> 234 235 236 237 238 239 240 241 <li class="md-nav__item"> 242 <a href="ft2-user_allocation.html" title="User allocation" class="md-nav__link"> 243 User allocation 244 </a> 245 </li> 246 247 248 </ul> 249 </nav> 250 </li> 251 252 253 254 255 256 257 258 <li class="md-nav__item md-nav__item--nested"> 259 260 <input class="md-toggle md-nav__toggle" data-md-toggle="nav-4" type="checkbox" id="nav-4"> 261 262 <label class="md-nav__link" for="nav-4"> 263 Core API 264 </label> 265 <nav class="md-nav" data-md-component="collapsible" data-md-level="1"> 266 <label class="md-nav__title" for="nav-4"> 267 Core API 268 </label> 269 <ul class="md-nav__list" data-md-scrollfix> 270 271 272 273 274 275 276 277 <li class="md-nav__item"> 278 <a href="ft2-version.html" title="FreeType Version" class="md-nav__link"> 279 FreeType Version 280 </a> 281 </li> 282 283 284 285 286 287 288 289 <li class="md-nav__item"> 290 <a href="ft2-basic_types.html" title="Basic Data Types" class="md-nav__link"> 291 Basic Data Types 292 </a> 293 </li> 294 295 296 297 298 299 300 301 <li class="md-nav__item"> 302 <a href="ft2-base_interface.html" title="Base Interface" class="md-nav__link"> 303 Base Interface 304 </a> 305 </li> 306 307 308 309 310 311 312 313 <li class="md-nav__item"> 314 <a href="ft2-glyph_variants.html" title="Unicode Variation Sequences" class="md-nav__link"> 315 Unicode Variation Sequences 316 </a> 317 </li> 318 319 320 321 322 323 324 325 <li class="md-nav__item"> 326 <a href="ft2-color_management.html" title="Glyph Color Management" class="md-nav__link"> 327 Glyph Color Management 328 </a> 329 </li> 330 331 332 333 334 335 336 337 <li class="md-nav__item"> 338 <a href="ft2-layer_management.html" title="Glyph Layer Management" class="md-nav__link"> 339 Glyph Layer Management 340 </a> 341 </li> 342 343 344 345 346 347 348 349 <li class="md-nav__item"> 350 <a href="ft2-glyph_management.html" title="Glyph Management" class="md-nav__link"> 351 Glyph Management 352 </a> 353 </li> 354 355 356 357 358 359 360 361 <li class="md-nav__item"> 362 <a href="ft2-mac_specific.html" title="Mac Specific Interface" class="md-nav__link"> 363 Mac Specific Interface 364 </a> 365 </li> 366 367 368 369 370 371 372 373 <li class="md-nav__item"> 374 <a href="ft2-sizes_management.html" title="Size Management" class="md-nav__link"> 375 Size Management 376 </a> 377 </li> 378 379 380 381 382 383 384 385 <li class="md-nav__item"> 386 <a href="ft2-header_file_macros.html" title="Header File Macros" class="md-nav__link"> 387 Header File Macros 388 </a> 389 </li> 390 391 392 </ul> 393 </nav> 394 </li> 395 396 397 398 399 400 401 402 <li class="md-nav__item md-nav__item--nested"> 403 404 <input class="md-toggle md-nav__toggle" data-md-toggle="nav-5" type="checkbox" id="nav-5"> 405 406 <label class="md-nav__link" for="nav-5"> 407 Format-Specific API 408 </label> 409 <nav class="md-nav" data-md-component="collapsible" data-md-level="1"> 410 <label class="md-nav__title" for="nav-5"> 411 Format-Specific API 412 </label> 413 <ul class="md-nav__list" data-md-scrollfix> 414 415 416 417 418 419 420 421 <li class="md-nav__item"> 422 <a href="ft2-multiple_masters.html" title="Multiple Masters" class="md-nav__link"> 423 Multiple Masters 424 </a> 425 </li> 426 427 428 429 430 431 432 433 <li class="md-nav__item"> 434 <a href="ft2-truetype_tables.html" title="TrueType Tables" class="md-nav__link"> 435 TrueType Tables 436 </a> 437 </li> 438 439 440 441 442 443 444 445 <li class="md-nav__item"> 446 <a href="ft2-type1_tables.html" title="Type 1 Tables" class="md-nav__link"> 447 Type 1 Tables 448 </a> 449 </li> 450 451 452 453 454 455 456 457 <li class="md-nav__item"> 458 <a href="ft2-sfnt_names.html" title="SFNT Names" class="md-nav__link"> 459 SFNT Names 460 </a> 461 </li> 462 463 464 465 466 467 468 469 <li class="md-nav__item"> 470 <a href="ft2-bdf_fonts.html" title="BDF and PCF Files" class="md-nav__link"> 471 BDF and PCF Files 472 </a> 473 </li> 474 475 476 477 478 479 480 481 <li class="md-nav__item"> 482 <a href="ft2-cid_fonts.html" title="CID Fonts" class="md-nav__link"> 483 CID Fonts 484 </a> 485 </li> 486 487 488 489 490 491 492 493 <li class="md-nav__item"> 494 <a href="ft2-pfr_fonts.html" title="PFR Fonts" class="md-nav__link"> 495 PFR Fonts 496 </a> 497 </li> 498 499 500 501 502 503 504 505 <li class="md-nav__item"> 506 <a href="ft2-winfnt_fonts.html" title="Window FNT Files" class="md-nav__link"> 507 Window FNT Files 508 </a> 509 </li> 510 511 512 513 514 515 516 517 <li class="md-nav__item"> 518 <a href="ft2-font_formats.html" title="Font Formats" class="md-nav__link"> 519 Font Formats 520 </a> 521 </li> 522 523 524 525 526 527 528 529 <li class="md-nav__item"> 530 <a href="ft2-gasp_table.html" title="Gasp Table" class="md-nav__link"> 531 Gasp Table 532 </a> 533 </li> 534 535 536 </ul> 537 </nav> 538 </li> 539 540 541 542 543 544 545 546 <li class="md-nav__item md-nav__item--nested"> 547 548 <input class="md-toggle md-nav__toggle" data-md-toggle="nav-6" type="checkbox" id="nav-6"> 549 550 <label class="md-nav__link" for="nav-6"> 551 Controlling FreeType Modules 552 </label> 553 <nav class="md-nav" data-md-component="collapsible" data-md-level="1"> 554 <label class="md-nav__title" for="nav-6"> 555 Controlling FreeType Modules 556 </label> 557 <ul class="md-nav__list" data-md-scrollfix> 558 559 560 561 562 563 564 565 <li class="md-nav__item"> 566 <a href="ft2-auto_hinter.html" title="The auto-hinter" class="md-nav__link"> 567 The auto-hinter 568 </a> 569 </li> 570 571 572 573 574 575 576 577 <li class="md-nav__item"> 578 <a href="ft2-cff_driver.html" title="The CFF driver" class="md-nav__link"> 579 The CFF driver 580 </a> 581 </li> 582 583 584 585 586 587 588 589 <li class="md-nav__item"> 590 <a href="ft2-t1_cid_driver.html" title="The Type 1 and CID drivers" class="md-nav__link"> 591 The Type 1 and CID drivers 592 </a> 593 </li> 594 595 596 597 598 599 600 601 <li class="md-nav__item"> 602 <a href="ft2-tt_driver.html" title="The TrueType driver" class="md-nav__link"> 603 The TrueType driver 604 </a> 605 </li> 606 607 608 609 610 611 612 613 <li class="md-nav__item"> 614 <a href="ft2-pcf_driver.html" title="The PCF driver" class="md-nav__link"> 615 The PCF driver 616 </a> 617 </li> 618 619 620 621 622 623 624 625 <li class="md-nav__item"> 626 <a href="ft2-properties.html" title="Driver properties" class="md-nav__link"> 627 Driver properties 628 </a> 629 </li> 630 631 632 633 634 635 636 637 <li class="md-nav__item"> 638 <a href="ft2-parameter_tags.html" title="Parameter Tags" class="md-nav__link"> 639 Parameter Tags 640 </a> 641 </li> 642 643 644 645 646 647 648 649 <li class="md-nav__item"> 650 <a href="ft2-lcd_rendering.html" title="Subpixel Rendering" class="md-nav__link"> 651 Subpixel Rendering 652 </a> 653 </li> 654 655 656 </ul> 657 </nav> 658 </li> 659 660 661 662 663 664 665 666 <li class="md-nav__item md-nav__item--nested"> 667 668 <input class="md-toggle md-nav__toggle" data-md-toggle="nav-7" type="checkbox" id="nav-7"> 669 670 <label class="md-nav__link" for="nav-7"> 671 Cache Sub-System 672 </label> 673 <nav class="md-nav" data-md-component="collapsible" data-md-level="1"> 674 <label class="md-nav__title" for="nav-7"> 675 Cache Sub-System 676 </label> 677 <ul class="md-nav__list" data-md-scrollfix> 678 679 680 681 682 683 684 685 <li class="md-nav__item"> 686 <a href="ft2-cache_subsystem.html" title="Cache Sub-System" class="md-nav__link"> 687 Cache Sub-System 688 </a> 689 </li> 690 691 692 </ul> 693 </nav> 694 </li> 695 696 697 698 699 700 701 702 703 704 <li class="md-nav__item md-nav__item--active md-nav__item--nested"> 705 706 <input class="md-toggle md-nav__toggle" data-md-toggle="nav-8" type="checkbox" id="nav-8" checked> 707 708 <label class="md-nav__link" for="nav-8"> 709 Support API 710 </label> 711 <nav class="md-nav" data-md-component="collapsible" data-md-level="1"> 712 <label class="md-nav__title" for="nav-8"> 713 Support API 714 </label> 715 <ul class="md-nav__list" data-md-scrollfix> 716 717 718 719 720 721 722 723 <li class="md-nav__item"> 724 <a href="ft2-computations.html" title="Computations" class="md-nav__link"> 725 Computations 726 </a> 727 </li> 728 729 730 731 732 733 734 735 <li class="md-nav__item"> 736 <a href="ft2-list_processing.html" title="List Processing" class="md-nav__link"> 737 List Processing 738 </a> 739 </li> 740 741 742 743 744 745 746 747 <li class="md-nav__item"> 748 <a href="ft2-outline_processing.html" title="Outline Processing" class="md-nav__link"> 749 Outline Processing 750 </a> 751 </li> 752 753 754 755 756 757 758 759 <li class="md-nav__item"> 760 <a href="ft2-quick_advance.html" title="Quick retrieval of advance values" class="md-nav__link"> 761 Quick retrieval of advance values 762 </a> 763 </li> 764 765 766 767 768 769 770 771 <li class="md-nav__item"> 772 <a href="ft2-bitmap_handling.html" title="Bitmap Handling" class="md-nav__link"> 773 Bitmap Handling 774 </a> 775 </li> 776 777 778 779 780 781 782 783 <li class="md-nav__item"> 784 <a href="ft2-raster.html" title="Scanline Converter" class="md-nav__link"> 785 Scanline Converter 786 </a> 787 </li> 788 789 790 791 792 793 794 795 <li class="md-nav__item"> 796 <a href="ft2-glyph_stroker.html" title="Glyph Stroker" class="md-nav__link"> 797 Glyph Stroker 798 </a> 799 </li> 800 801 802 803 804 805 806 807 <li class="md-nav__item"> 808 <a href="ft2-system_interface.html" title="System Interface" class="md-nav__link"> 809 System Interface 810 </a> 811 </li> 812 813 814 815 816 817 818 819 <li class="md-nav__item"> 820 <a href="ft2-module_management.html" title="Module Management" class="md-nav__link"> 821 Module Management 822 </a> 823 </li> 824 825 826 827 828 829 830 831 <li class="md-nav__item"> 832 <a href="ft2-gzip.html" title="GZIP Streams" class="md-nav__link"> 833 GZIP Streams 834 </a> 835 </li> 836 837 838 839 840 841 842 843 <li class="md-nav__item"> 844 <a href="ft2-lzw.html" title="LZW Streams" class="md-nav__link"> 845 LZW Streams 846 </a> 847 </li> 848 849 850 851 852 853 854 855 856 857 <li class="md-nav__item md-nav__item--active"> 858 859 <input class="md-toggle md-nav__toggle" data-md-toggle="toc" type="checkbox" id="__toc"> 860 861 862 863 864 <label class="md-nav__link md-nav__link--active" for="__toc"> 865 BZIP2 Streams 866 </label> 867 868 <a href="ft2-bzip2.html" title="BZIP2 Streams" class="md-nav__link md-nav__link--active"> 869 BZIP2 Streams 870 </a> 871 872 873<nav class="md-nav md-nav--secondary"> 874 875 876 877 878 879 <label class="md-nav__title" for="__toc">Table of contents</label> 880 <ul class="md-nav__list" data-md-scrollfix> 881 882 <li class="md-nav__item"> 883 <a href="#synopsis" class="md-nav__link"> 884 Synopsis 885 </a> 886 887</li> 888 889 <li class="md-nav__item"> 890 <a href="#ft_stream_openbzip2" class="md-nav__link"> 891 FT_Stream_OpenBzip2 892 </a> 893 894</li> 895 896 897 898 899 900 </ul> 901 902</nav> 903 904 </li> 905 906 907 </ul> 908 </nav> 909 </li> 910 911 912 913 914 915 916 917 <li class="md-nav__item md-nav__item--nested"> 918 919 <input class="md-toggle md-nav__toggle" data-md-toggle="nav-9" type="checkbox" id="nav-9"> 920 921 <label class="md-nav__link" for="nav-9"> 922 Error Codes 923 </label> 924 <nav class="md-nav" data-md-component="collapsible" data-md-level="1"> 925 <label class="md-nav__title" for="nav-9"> 926 Error Codes 927 </label> 928 <ul class="md-nav__list" data-md-scrollfix> 929 930 931 932 933 934 935 936 <li class="md-nav__item"> 937 <a href="ft2-error_enumerations.html" title="Error Enumerations" class="md-nav__link"> 938 Error Enumerations 939 </a> 940 </li> 941 942 943 944 945 946 947 948 <li class="md-nav__item"> 949 <a href="ft2-error_code_values.html" title="Error Code Values" class="md-nav__link"> 950 Error Code Values 951 </a> 952 </li> 953 954 955 </ul> 956 </nav> 957 </li> 958 959 960 961 962 963 964 965 <li class="md-nav__item md-nav__item--nested"> 966 967 <input class="md-toggle md-nav__toggle" data-md-toggle="nav-10" type="checkbox" id="nav-10"> 968 969 <label class="md-nav__link" for="nav-10"> 970 Miscellaneous 971 </label> 972 <nav class="md-nav" data-md-component="collapsible" data-md-level="1"> 973 <label class="md-nav__title" for="nav-10"> 974 Miscellaneous 975 </label> 976 <ul class="md-nav__list" data-md-scrollfix> 977 978 979 980 981 982 983 984 <li class="md-nav__item"> 985 <a href="ft2-gx_validation.html" title="TrueTypeGX/AAT Validation" class="md-nav__link"> 986 TrueTypeGX/AAT Validation 987 </a> 988 </li> 989 990 991 992 993 994 995 996 <li class="md-nav__item"> 997 <a href="ft2-incremental.html" title="Incremental Loading" class="md-nav__link"> 998 Incremental Loading 999 </a> 1000 </li> 1001 1002 1003 1004 1005 1006 1007 1008 <li class="md-nav__item"> 1009 <a href="ft2-truetype_engine.html" title="The TrueType Engine" class="md-nav__link"> 1010 The TrueType Engine 1011 </a> 1012 </li> 1013 1014 1015 1016 1017 1018 1019 1020 <li class="md-nav__item"> 1021 <a href="ft2-ot_validation.html" title="OpenType Validation" class="md-nav__link"> 1022 OpenType Validation 1023 </a> 1024 </li> 1025 1026 1027 </ul> 1028 </nav> 1029 </li> 1030 1031 1032 </ul> 1033</nav> 1034 </div> 1035 </div> 1036 </div> 1037 1038 1039 <div class="md-sidebar md-sidebar--secondary" data-md-component="toc"> 1040 <div class="md-sidebar__scrollwrap"> 1041 <div class="md-sidebar__inner"> 1042 1043<nav class="md-nav md-nav--secondary"> 1044 1045 1046 1047 1048 1049 <label class="md-nav__title" for="__toc">Table of contents</label> 1050 <ul class="md-nav__list" data-md-scrollfix> 1051 1052 <li class="md-nav__item"> 1053 <a href="#synopsis" class="md-nav__link"> 1054 Synopsis 1055 </a> 1056 1057</li> 1058 1059 <li class="md-nav__item"> 1060 <a href="#ft_stream_openbzip2" class="md-nav__link"> 1061 FT_Stream_OpenBzip2 1062 </a> 1063 1064</li> 1065 1066 1067 1068 1069 1070 </ul> 1071 1072</nav> 1073 </div> 1074 </div> 1075 </div> 1076 1077 1078 <div class="md-content"> 1079 <article class="md-content__inner md-typeset"> 1080 1081 1082 1083 <p><a href="https://www.freetype.org">FreeType</a> » <a href="../">Docs</a> » <a href="index.html#support-api">Support API</a> » BZIP2 Streams</p> 1084<hr /> 1085<h1 id="bzip2-streams">BZIP2 Streams<a class="headerlink" href="#bzip2-streams" title="Permanent link">¶</a></h1> 1086<h2 id="synopsis">Synopsis<a class="headerlink" href="#synopsis" title="Permanent link">¶</a></h2> 1087<p>In certain builds of the library, bzip2 compression recognition is automatically handled when calling <code><a href="ft2-base_interface.html#ft_new_face">FT_New_Face</a></code> or <code><a href="ft2-base_interface.html#ft_open_face">FT_Open_Face</a></code>. This means that if no font driver is capable of handling the raw compressed file, the library will try to open a bzip2 compressed stream from it and re-open the face with it.</p> 1088<p>The stream implementation is very basic and resets the decompression process each time seeking backwards is needed within the stream, which significantly undermines the performance.</p> 1089<p>This section contains the declaration of Bzip2-specific functions.</p> 1090<h2 id="ft_stream_openbzip2">FT_Stream_OpenBzip2<a class="headerlink" href="#ft_stream_openbzip2" title="Permanent link">¶</a></h2> 1091<p>Defined in FT_BZIP2_H (freetype/ftbzip2.h).</p> 1092<div class = "codehilite"><pre><code> FT_EXPORT( <a href="ft2-basic_types.html#ft_error">FT_Error</a> ) 1093 <b>FT_Stream_OpenBzip2</b>( <a href="ft2-system_interface.html#ft_stream">FT_Stream</a> stream, 1094 <a href="ft2-system_interface.html#ft_stream">FT_Stream</a> source ); 1095</code></pre></div> 1096 1097<p>Open a new stream to parse bzip2-compressed font files. This is mainly used to support the compressed <code>*.pcf.bz2</code> fonts that come with XFree86.</p> 1098<h4>input</h4> 1099 1100<table class="fields"> 1101<tr><td class="val" id="stream">stream</td><td class="desc"> 1102<p>The target embedding stream.</p> 1103</td></tr> 1104<tr><td class="val" id="source">source</td><td class="desc"> 1105<p>The source stream.</p> 1106</td></tr> 1107</table> 1108 1109<h4>return</h4> 1110 1111<p>FreeType error code. 0 means success.</p> 1112<h4>note</h4> 1113 1114<p>The source stream must be opened <em>before</em> calling this function.</p> 1115<p>Calling the internal function <code>FT_Stream_Close</code> on the new stream will <strong>not</strong> call <code>FT_Stream_Close</code> on the source stream. None of the stream objects will be released to the heap.</p> 1116<p>This function may return <code>FT_Err_Unimplemented_Feature</code> if your build of FreeType was not compiled with bzip2 support.</p> 1117<hr> 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 </article> 1129 </div> 1130 </div> 1131 </main> 1132 1133 1134<footer class="md-footer"> 1135 1136 <div class="md-footer-nav"> 1137 <nav class="md-footer-nav__inner md-grid"> 1138 1139 <a href="ft2-lzw.html" title="LZW Streams" class="md-flex md-footer-nav__link md-footer-nav__link--prev" rel="prev"> 1140 <div class="md-flex__cell md-flex__cell--shrink"> 1141 <i class="md-icon md-icon--arrow-back md-footer-nav__button"></i> 1142 </div> 1143 <div class="md-flex__cell md-flex__cell--stretch md-footer-nav__title"> 1144 <span class="md-flex__ellipsis"> 1145 <span class="md-footer-nav__direction"> 1146 Previous 1147 </span> 1148 LZW Streams 1149 </span> 1150 </div> 1151 </a> 1152 1153 1154 <a href="ft2-error_enumerations.html" title="Error Enumerations" class="md-flex md-footer-nav__link md-footer-nav__link--next" rel="next"> 1155 <div class="md-flex__cell md-flex__cell--stretch md-footer-nav__title"> 1156 <span class="md-flex__ellipsis"> 1157 <span class="md-footer-nav__direction"> 1158 Next 1159 </span> 1160 Error Enumerations 1161 </span> 1162 </div> 1163 <div class="md-flex__cell md-flex__cell--shrink"> 1164 <i class="md-icon md-icon--arrow-forward md-footer-nav__button"></i> 1165 </div> 1166 </a> 1167 1168 </nav> 1169 </div> 1170 1171 <div class="md-footer-meta md-typeset"> 1172 <div class="md-footer-meta__inner md-grid"> 1173 <div class="md-footer-copyright"> 1174 1175 <div class="md-footer-copyright__highlight"> 1176 Copyright 2020 <a href = "https://www.freetype.org/license.html">The FreeType Project</a>. 1177 </div> 1178 1179 powered by 1180 <a href="https://www.mkdocs.org" target="_blank" rel="noopener">MkDocs</a> 1181 and 1182 <a href="https://squidfunk.github.io/mkdocs-material/" target="_blank" rel="noopener"> 1183 Material for MkDocs</a> 1184 </div> 1185 1186 </div> 1187 </div> 1188</footer> 1189 1190 </div> 1191 1192 <script src="assets/javascripts/application.c33a9706.js"></script> 1193 1194 <script>app.initialize({version:"1.1",url:{base:"."}})</script> 1195 1196 <script src="javascripts/extra.js"></script> 1197 1198 1199 </body> 1200</html>