From 3562e78743202e43aec8727005182a2558117eca Mon Sep 17 00:00:00 2001 From: marha Date: Sun, 28 Jun 2009 22:07:26 +0000 Subject: Checked in the following released items: xkeyboard-config-1.4.tar.gz ttf-bitstream-vera-1.10.tar.gz font-alias-1.0.1.tar.gz font-sun-misc-1.0.0.tar.gz font-sun-misc-1.0.0.tar.gz font-sony-misc-1.0.0.tar.gz font-schumacher-misc-1.0.0.tar.gz font-mutt-misc-1.0.0.tar.gz font-misc-misc-1.0.0.tar.gz font-misc-meltho-1.0.0.tar.gz font-micro-misc-1.0.0.tar.gz font-jis-misc-1.0.0.tar.gz font-isas-misc-1.0.0.tar.gz font-dec-misc-1.0.0.tar.gz font-daewoo-misc-1.0.0.tar.gz font-cursor-misc-1.0.0.tar.gz font-arabic-misc-1.0.0.tar.gz font-winitzki-cyrillic-1.0.0.tar.gz font-misc-cyrillic-1.0.0.tar.gz font-cronyx-cyrillic-1.0.0.tar.gz font-screen-cyrillic-1.0.1.tar.gz font-xfree86-type1-1.0.1.tar.gz font-adobe-utopia-type1-1.0.1.tar.gz font-ibm-type1-1.0.0.tar.gz font-bitstream-type1-1.0.0.tar.gz font-bitstream-speedo-1.0.0.tar.gz font-bh-ttf-1.0.0.tar.gz font-bh-type1-1.0.0.tar.gz font-bitstream-100dpi-1.0.0.tar.gz font-bh-lucidatypewriter-100dpi-1.0.0.tar.gz font-bh-100dpi-1.0.0.tar.gz font-adobe-utopia-100dpi-1.0.1.tar.gz font-adobe-100dpi-1.0.0.tar.gz font-util-1.0.1.tar.gz font-bitstream-75dpi-1.0.0.tar.gz font-bh-lucidatypewriter-75dpi-1.0.0.tar.gz font-adobe-utopia-75dpi-1.0.1.tar.gz font-bh-75dpi-1.0.0.tar.gz bdftopcf-1.0.1.tar.gz font-adobe-75dpi-1.0.0.tar.gz mkfontscale-1.0.6.tar.gz openssl-0.9.8k.tar.gz bigreqsproto-1.0.2.tar.gz xtrans-1.2.2.tar.gz resourceproto-1.0.2.tar.gz inputproto-1.4.4.tar.gz compositeproto-0.4.tar.gz damageproto-1.1.0.tar.gz zlib-1.2.3.tar.gz xkbcomp-1.0.5.tar.gz freetype-2.3.9.tar.gz pthreads-w32-2-8-0-release.tar.gz pixman-0.12.0.tar.gz kbproto-1.0.3.tar.gz evieext-1.0.2.tar.gz fixesproto-4.0.tar.gz recordproto-1.13.2.tar.gz randrproto-1.2.2.tar.gz scrnsaverproto-1.1.0.tar.gz renderproto-0.9.3.tar.gz xcmiscproto-1.1.2.tar.gz fontsproto-2.0.2.tar.gz xextproto-7.0.3.tar.gz xproto-7.0.14.tar.gz libXdmcp-1.0.2.tar.gz libxkbfile-1.0.5.tar.gz libfontenc-1.0.4.tar.gz libXfont-1.3.4.tar.gz libX11-1.1.5.tar.gz libXau-1.0.4.tar.gz libxcb-1.1.tar.gz xorg-server-1.5.3.tar.gz --- freetype/src/base/ftpatent.c | 281 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 281 insertions(+) create mode 100644 freetype/src/base/ftpatent.c (limited to 'freetype/src/base/ftpatent.c') diff --git a/freetype/src/base/ftpatent.c b/freetype/src/base/ftpatent.c new file mode 100644 index 000000000..9f129d8f0 --- /dev/null +++ b/freetype/src/base/ftpatent.c @@ -0,0 +1,281 @@ +/***************************************************************************/ +/* */ +/* ftpatent.c */ +/* */ +/* FreeType API for checking patented TrueType bytecode instructions */ +/* (body). */ +/* */ +/* Copyright 2007, 2008 by David Turner. */ +/* */ +/* This file is part of the FreeType project, and may only be used, */ +/* modified, and distributed under the terms of the FreeType project */ +/* license, LICENSE.TXT. By continuing to use, modify, or distribute */ +/* this file you indicate that you have read the license and */ +/* understand and accept it fully. */ +/* */ +/***************************************************************************/ + +#include +#include FT_FREETYPE_H +#include FT_TRUETYPE_TAGS_H +#include FT_INTERNAL_OBJECTS_H +#include FT_INTERNAL_STREAM_H +#include FT_SERVICE_SFNT_H +#include FT_SERVICE_TRUETYPE_GLYF_H + + + static FT_Bool + _tt_check_patents_in_range( FT_Stream stream, + FT_ULong size ) + { + FT_Bool result = FALSE; + FT_Error error; + FT_Bytes p, end; + + + if ( FT_FRAME_ENTER( size ) ) + return 0; + + p = stream->cursor; + end = p + size; + + while ( p < end ) + { + switch (p[0]) + { + case 0x06: /* SPvTL // */ + case 0x07: /* SPvTL + */ + case 0x08: /* SFvTL // */ + case 0x09: /* SFvTL + */ + case 0x0A: /* SPvFS */ + case 0x0B: /* SFvFS */ + result = TRUE; + goto Exit; + + case 0x40: + if ( p + 1 >= end ) + goto Exit; + + p += p[1] + 2; + break; + + case 0x41: + if ( p + 1 >= end ) + goto Exit; + + p += p[1] * 2 + 2; + break; + + case 0x71: /* DELTAP2 */ + case 0x72: /* DELTAP3 */ + case 0x73: /* DELTAC0 */ + case 0x74: /* DELTAC1 */ + case 0x75: /* DELTAC2 */ + result = TRUE; + goto Exit; + + case 0xB0: + case 0xB1: + case 0xB2: + case 0xB3: + case 0xB4: + case 0xB5: + case 0xB6: + case 0xB7: + p += ( p[0] - 0xB0 ) + 2; + break; + + case 0xB8: + case 0xB9: + case 0xBA: + case 0xBB: + case 0xBC: + case 0xBD: + case 0xBE: + case 0xBF: + p += ( p[0] - 0xB8 ) * 2 + 3; + break; + + default: + p += 1; + break; + } + } + + Exit: + FT_FRAME_EXIT(); + return result; + } + + + static FT_Bool + _tt_check_patents_in_table( FT_Face face, + FT_ULong tag ) + { + FT_Stream stream = face->stream; + FT_Error error; + FT_Service_SFNT_Table service; + FT_Bool result = FALSE; + + + FT_FACE_FIND_SERVICE( face, service, SFNT_TABLE ); + + if ( service ) + { + FT_ULong offset, size; + + + error = service->table_info( face, tag, &offset, &size ); + if ( error || + FT_STREAM_SEEK( offset ) ) + goto Exit; + + result = _tt_check_patents_in_range( stream, size ); + } + + Exit: + return result; + } + + + static FT_Bool + _tt_face_check_patents( FT_Face face ) + { + FT_Stream stream = face->stream; + FT_UInt gindex; + FT_Error error; + FT_Bool result; + + FT_Service_TTGlyf service; + + + result = _tt_check_patents_in_table( face, TTAG_fpgm ); + if ( result ) + goto Exit; + + result = _tt_check_patents_in_table( face, TTAG_prep ); + if ( result ) + goto Exit; + + FT_FACE_FIND_SERVICE( face, service, TT_GLYF ); + if ( service == NULL ) + goto Exit; + + for ( gindex = 0; gindex < (FT_UInt)face->num_glyphs; gindex++ ) + { + FT_ULong offset, num_ins, size; + FT_Int num_contours; + + + offset = service->get_location( face, gindex, &size ); + if ( size == 0 ) + continue; + + if ( FT_STREAM_SEEK( offset ) || + FT_READ_SHORT( num_contours ) ) + continue; + + if ( num_contours >= 0 ) /* simple glyph */ + { + if ( FT_STREAM_SKIP( 8 + num_contours * 2 ) ) + continue; + } + else /* compound glyph */ + { + FT_Bool has_instr = 0; + + + if ( FT_STREAM_SKIP( 8 ) ) + continue; + + /* now read each component */ + for (;;) + { + FT_UInt flags, toskip; + + + if( FT_READ_USHORT( flags ) ) + break; + + toskip = 2 + 1 + 1; + + if ( ( flags & ( 1 << 0 ) ) != 0 ) /* ARGS_ARE_WORDS */ + toskip += 2; + + if ( ( flags & ( 1 << 3 ) ) != 0 ) /* WE_HAVE_A_SCALE */ + toskip += 2; + else if ( ( flags & ( 1 << 6 ) ) != 0 ) /* WE_HAVE_X_Y_SCALE */ + toskip += 4; + else if ( ( flags & ( 1 << 7 ) ) != 0 ) /* WE_HAVE_A_2x2 */ + toskip += 8; + + if ( ( flags & ( 1 << 8 ) ) != 0 ) /* WE_HAVE_INSTRUCTIONS */ + has_instr = 1; + + if ( FT_STREAM_SKIP( toskip ) ) + goto NextGlyph; + + if ( ( flags & ( 1 << 5 ) ) == 0 ) /* MORE_COMPONENTS */ + break; + } + + if ( !has_instr ) + goto NextGlyph; + } + + if ( FT_READ_USHORT( num_ins ) ) + continue; + + result = _tt_check_patents_in_range( stream, num_ins ); + if ( result ) + goto Exit; + + NextGlyph: + ; + } + + Exit: + return result; + } + + + /* documentation is in freetype.h */ + + FT_EXPORT_DEF( FT_Bool ) + FT_Face_CheckTrueTypePatents( FT_Face face ) + { + FT_Bool result = FALSE; + + + if ( face && FT_IS_SFNT( face ) ) + result = _tt_face_check_patents( face ); + + return result; + } + + + /* documentation is in freetype.h */ + + FT_EXPORT_DEF( FT_Bool ) + FT_Face_SetUnpatentedHinting( FT_Face face, + FT_Bool value ) + { + FT_Bool result = FALSE; + + +#if defined( TT_CONFIG_OPTION_UNPATENTED_HINTING ) && \ + !defined( TT_CONFIG_OPTION_BYTECODE_INTEPRETER ) + if ( face && FT_IS_SFNT( face ) ) + { + result = !face->internal->ignore_unpatented_hinter; + face->internal->ignore_unpatented_hinter = !value; + } +#else + FT_UNUSED( face ); + FT_UNUSED( value ); +#endif + + return result; + } + +/* END */ -- cgit v1.2.3