Index: core/src/fxge/fx_freetype/fxft2.5.01/src/sfnt/ttload.c |
diff --git a/core/src/fxge/fx_freetype/fxft2.5.01/src/sfnt/ttload.c b/core/src/fxge/fx_freetype/fxft2.5.01/src/sfnt/ttload.c |
deleted file mode 100644 |
index 95eb2bb14cbc65dbb146a4e6a00249913454341f..0000000000000000000000000000000000000000 |
--- a/core/src/fxge/fx_freetype/fxft2.5.01/src/sfnt/ttload.c |
+++ /dev/null |
@@ -1,1295 +0,0 @@ |
-/***************************************************************************/ |
-/* */ |
-/* ttload.c */ |
-/* */ |
-/* Load the basic TrueType tables, i.e., tables that can be either in */ |
-/* TTF or OTF fonts (body). */ |
-/* */ |
-/* Copyright 1996-2010, 2012, 2013 by */ |
-/* David Turner, Robert Wilhelm, and Werner Lemberg. */ |
-/* */ |
-/* 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/ft2build.h" |
-#include "../../include/freetype/internal/ftdebug.h" |
-#include "../../include/freetype/internal/ftstream.h" |
-#include "../../include/freetype/tttags.h" |
-#include "ttload.h" |
- |
-#include "sferrors.h" |
- |
- |
- /*************************************************************************/ |
- /* */ |
- /* The macro FT_COMPONENT is used in trace mode. It is an implicit */ |
- /* parameter of the FT_TRACE() and FT_ERROR() macros, used to print/log */ |
- /* messages during execution. */ |
- /* */ |
-#undef FT_COMPONENT |
-#define FT_COMPONENT trace_ttload |
- |
- |
- /*************************************************************************/ |
- /* */ |
- /* <Function> */ |
- /* tt_face_lookup_table */ |
- /* */ |
- /* <Description> */ |
- /* Looks for a TrueType table by name. */ |
- /* */ |
- /* <Input> */ |
- /* face :: A face object handle. */ |
- /* */ |
- /* tag :: The searched tag. */ |
- /* */ |
- /* <Return> */ |
- /* A pointer to the table directory entry. 0 if not found. */ |
- /* */ |
- FT_LOCAL_DEF( TT_Table ) |
- tt_face_get_nexttable(TT_Table first, TT_Table limit, TT_Table entry) |
- { |
- TT_Table temp = NULL; |
- if (!entry) return NULL; |
- |
- for (; first < limit; first++){ |
- if (entry->Offset + entry->Length <= first->Offset){ |
- if (!temp || first->Offset < temp->Offset){ |
- temp = first; |
- } |
- } |
- } |
- return temp; |
- } |
- |
- FT_LOCAL_DEF( TT_Table ) |
- tt_face_lookup_table( TT_Face face, |
- FT_ULong tag ) |
- { |
- TT_Table entry; |
- TT_Table limit; |
-#ifdef FT_DEBUG_LEVEL_TRACE |
- FT_Bool zero_length = FALSE; |
-#endif |
- |
- |
- FT_TRACE4(( "tt_face_lookup_table: %08p, `%c%c%c%c' -- ", |
- face, |
- (FT_Char)( tag >> 24 ), |
- (FT_Char)( tag >> 16 ), |
- (FT_Char)( tag >> 8 ), |
- (FT_Char)( tag ) )); |
- |
- entry = face->dir_tables; |
- limit = entry + face->num_tables; |
- |
- for ( ; entry < limit; entry++ ) |
- { |
- /* For compatibility with Windows, we consider */ |
- /* zero-length tables the same as missing tables. */ |
- if ( entry->Tag == tag ) |
- { |
- if ( entry->Length != 0 ) |
- { |
- if (tag == TTAG_loca){ |
- TT_Table next = tt_face_get_nexttable(face->dir_tables, limit, entry); |
- if (next && entry->Offset + entry->Length < next->Offset) |
- entry->Length = next->Offset - entry->Offset; |
- } |
- FT_TRACE4(( "found table.\n" )); |
- return entry; |
- } |
-#ifdef FT_DEBUG_LEVEL_TRACE |
- zero_length = TRUE; |
-#endif |
- } |
- } |
- |
-#ifdef FT_DEBUG_LEVEL_TRACE |
- if ( zero_length ) |
- FT_TRACE4(( "ignoring empty table\n" )); |
- else |
- FT_TRACE4(( "could not find table\n" )); |
-#endif |
- |
- return NULL; |
- } |
- |
- |
- /*************************************************************************/ |
- /* */ |
- /* <Function> */ |
- /* tt_face_goto_table */ |
- /* */ |
- /* <Description> */ |
- /* Looks for a TrueType table by name, then seek a stream to it. */ |
- /* */ |
- /* <Input> */ |
- /* face :: A face object handle. */ |
- /* */ |
- /* tag :: The searched tag. */ |
- /* */ |
- /* stream :: The stream to seek when the table is found. */ |
- /* */ |
- /* <Output> */ |
- /* length :: The length of the table if found, undefined otherwise. */ |
- /* */ |
- /* <Return> */ |
- /* FreeType error code. 0 means success. */ |
- /* */ |
- FT_LOCAL_DEF( FT_Error ) |
- tt_face_goto_table( TT_Face face, |
- FT_ULong tag, |
- FT_Stream stream, |
- FT_ULong* length ) |
- { |
- TT_Table table; |
- FT_Error error = 0; |
- |
- |
- table = tt_face_lookup_table( face, tag ); |
- if ( table ) |
- { |
- if ( length ) |
- *length = table->Length; |
- |
- if ( FT_STREAM_SEEK( table->Offset ) ) |
- goto Exit; |
- } |
- else |
- error = FT_THROW( Table_Missing ); |
- |
- Exit: |
- return error; |
- } |
- |
- |
- /* Here, we */ |
- /* */ |
- /* - check that `num_tables' is valid (and adjust it if necessary) */ |
- /* */ |
- /* - look for a `head' table, check its size, and parse it to check */ |
- /* whether its `magic' field is correctly set */ |
- /* */ |
- /* - errors (except errors returned by stream handling) */ |
- /* */ |
- /* SFNT_Err_Unknown_File_Format: */ |
- /* no table is defined in directory, it is not sfnt-wrapped */ |
- /* data */ |
- /* SFNT_Err_Table_Missing: */ |
- /* table directory is valid, but essential tables */ |
- /* (head/bhed/SING) are missing */ |
- /* */ |
- static FT_Error |
- check_table_dir( SFNT_Header sfnt, |
- FT_Stream stream ) |
- { |
- FT_Error error; |
- FT_UShort nn, valid_entries = 0; |
- FT_UInt has_head = 0, has_sing = 0, has_meta = 0; |
- FT_ULong offset = sfnt->offset + 12; |
- |
- static const FT_Frame_Field table_dir_entry_fields[] = |
- { |
-#undef FT_STRUCTURE |
-#define FT_STRUCTURE TT_TableRec |
- |
- FT_FRAME_START( 16 ), |
- FT_FRAME_ULONG( Tag ), |
- FT_FRAME_ULONG( CheckSum ), |
- FT_FRAME_ULONG( Offset ), |
- FT_FRAME_ULONG( Length ), |
- FT_FRAME_END |
- }; |
- |
- |
- if ( FT_STREAM_SEEK( offset ) ) |
- goto Exit; |
- |
- for ( nn = 0; nn < sfnt->num_tables; nn++ ) |
- { |
- TT_TableRec table; |
- |
- |
- if ( FT_STREAM_READ_FIELDS( table_dir_entry_fields, &table ) ) |
- { |
- nn--; |
- FT_TRACE2(( "check_table_dir:" |
- " can read only %d table%s in font (instead of %d)\n", |
- nn, nn == 1 ? "" : "s", sfnt->num_tables )); |
- sfnt->num_tables = nn; |
- break; |
- } |
- |
- /* we ignore invalid tables */ |
- if ( table.Offset + table.Length > stream->size ) |
- { |
- //BUGID: 53876, the cmap table is invalid, the font file couldn't be used. |
- if (table.Tag == TTAG_cmap) break; |
- FT_TRACE2(( "check_table_dir: table entry %d invalid\n", nn )); |
- continue; |
- } |
- else |
- valid_entries++; |
- |
- if ( table.Tag == TTAG_head || table.Tag == TTAG_bhed ) |
- { |
- FT_UInt32 magic; |
- |
- |
-#ifndef TT_CONFIG_OPTION_EMBEDDED_BITMAPS |
- if ( table.Tag == TTAG_head ) |
-#endif |
- has_head = 1; |
- |
- /* |
- * The table length should be 0x36, but certain font tools make it |
- * 0x38, so we will just check that it is greater. |
- * |
- * Note that according to the specification, the table must be |
- * padded to 32-bit lengths, but this doesn't apply to the value of |
- * its `Length' field! |
- * |
- */ |
- if ( table.Length < 0x36 ) |
- { |
- FT_TRACE2(( "check_table_dir: `head' table too small\n" )); |
- error = FT_THROW( Table_Missing ); |
- goto Exit; |
- } |
- |
- if ( FT_STREAM_SEEK( table.Offset + 12 ) || |
- FT_READ_ULONG( magic ) ) |
- goto Exit; |
- |
- if ( magic != 0x5F0F3CF5UL ) |
- { |
- FT_TRACE2(( "check_table_dir:" |
- " no magic number found in `head' table\n")); |
- error = FT_THROW( Table_Missing ); |
- goto Exit; |
- } |
- |
- if ( FT_STREAM_SEEK( offset + ( nn + 1 ) * 16 ) ) |
- goto Exit; |
- } |
- else if ( table.Tag == TTAG_SING ) |
- has_sing = 1; |
- else if ( table.Tag == TTAG_META ) |
- has_meta = 1; |
- } |
- |
- sfnt->num_tables = valid_entries; |
- |
- if ( sfnt->num_tables == 0 ) |
- { |
- FT_TRACE2(( "check_table_dir: no tables found\n" )); |
- error = FT_THROW( Unknown_File_Format ); |
- goto Exit; |
- } |
- |
- /* if `sing' and `meta' tables are present, there is no `head' table */ |
- if ( has_head || ( has_sing && has_meta ) ) |
- { |
- error = FT_Err_Ok; |
- goto Exit; |
- } |
- else |
- { |
- FT_TRACE2(( "check_table_dir:" )); |
-#ifdef TT_CONFIG_OPTION_EMBEDDED_BITMAPS |
- FT_TRACE2(( " neither `head', `bhed', nor `sing' table found\n" )); |
-#else |
- FT_TRACE2(( " neither `head' nor `sing' table found\n" )); |
-#endif |
- error = FT_THROW( Table_Missing ); |
- } |
- |
- Exit: |
- return error; |
- } |
- |
- |
- /*************************************************************************/ |
- /* */ |
- /* <Function> */ |
- /* tt_face_load_font_dir */ |
- /* */ |
- /* <Description> */ |
- /* Loads the header of a SFNT font file. */ |
- /* */ |
- /* <Input> */ |
- /* face :: A handle to the target face object. */ |
- /* */ |
- /* stream :: The input stream. */ |
- /* */ |
- /* <Output> */ |
- /* sfnt :: The SFNT header. */ |
- /* */ |
- /* <Return> */ |
- /* FreeType error code. 0 means success. */ |
- /* */ |
- /* <Note> */ |
- /* The stream cursor must be at the beginning of the font directory. */ |
- /* */ |
- FT_LOCAL_DEF( FT_Error ) |
- tt_face_load_font_dir( TT_Face face, |
- FT_Stream stream ) |
- { |
- SFNT_HeaderRec sfnt; |
- FT_Error error; |
- FT_Memory memory = stream->memory; |
- TT_TableRec* entry; |
- FT_Int nn; |
- |
- static const FT_Frame_Field offset_table_fields[] = |
- { |
-#undef FT_STRUCTURE |
-#define FT_STRUCTURE SFNT_HeaderRec |
- |
- FT_FRAME_START( 8 ), |
- FT_FRAME_USHORT( num_tables ), |
- FT_FRAME_USHORT( search_range ), |
- FT_FRAME_USHORT( entry_selector ), |
- FT_FRAME_USHORT( range_shift ), |
- FT_FRAME_END |
- }; |
- |
- |
- FT_TRACE2(( "tt_face_load_font_dir: %08p\n", face )); |
- |
- /* read the offset table */ |
- |
- sfnt.offset = FT_STREAM_POS(); |
- |
- if ( FT_READ_ULONG( sfnt.format_tag ) || |
- FT_STREAM_READ_FIELDS( offset_table_fields, &sfnt ) ) |
- goto Exit; |
- |
- /* many fonts don't have these fields set correctly */ |
-#if 0 |
- if ( sfnt.search_range != 1 << ( sfnt.entry_selector + 4 ) || |
- sfnt.search_range + sfnt.range_shift != sfnt.num_tables << 4 ) |
- return FT_THROW( Unknown_File_Format ); |
-#endif |
- |
- /* load the table directory */ |
- |
- FT_TRACE2(( "-- Number of tables: %10u\n", sfnt.num_tables )); |
- FT_TRACE2(( "-- Format version: 0x%08lx\n", sfnt.format_tag )); |
- |
- if ( sfnt.format_tag != TTAG_OTTO ) |
- { |
- /* check first */ |
- error = check_table_dir( &sfnt, stream ); |
- if ( error ) |
- { |
- FT_TRACE2(( "tt_face_load_font_dir:" |
- " invalid table directory for TrueType\n" )); |
- |
- goto Exit; |
- } |
- } |
- |
- face->num_tables = sfnt.num_tables; |
- face->format_tag = sfnt.format_tag; |
- |
- if ( FT_QNEW_ARRAY( face->dir_tables, face->num_tables ) ) |
- goto Exit; |
- |
- if ( FT_STREAM_SEEK( sfnt.offset + 12 ) || |
- FT_FRAME_ENTER( face->num_tables * 16L ) ) |
- goto Exit; |
- |
- entry = face->dir_tables; |
- |
- FT_TRACE2(( "\n" |
- " tag offset length checksum\n" |
- " ----------------------------------\n" )); |
- |
- for ( nn = 0; nn < sfnt.num_tables; nn++ ) |
- { |
- entry->Tag = FT_GET_TAG4(); |
- entry->CheckSum = FT_GET_ULONG(); |
- entry->Offset = FT_GET_LONG(); |
- entry->Length = FT_GET_LONG(); |
- |
- /* ignore invalid tables */ |
- if ( entry->Offset + entry->Length > stream->size ) |
- continue; |
- else |
- { |
- FT_TRACE2(( " %c%c%c%c %08lx %08lx %08lx\n", |
- (FT_Char)( entry->Tag >> 24 ), |
- (FT_Char)( entry->Tag >> 16 ), |
- (FT_Char)( entry->Tag >> 8 ), |
- (FT_Char)( entry->Tag ), |
- entry->Offset, |
- entry->Length, |
- entry->CheckSum )); |
- entry++; |
- } |
- } |
- |
- FT_FRAME_EXIT(); |
- |
- FT_TRACE2(( "table directory loaded\n\n" )); |
- |
- Exit: |
- return error; |
- } |
- |
- |
- /*************************************************************************/ |
- /* */ |
- /* <Function> */ |
- /* tt_face_load_any */ |
- /* */ |
- /* <Description> */ |
- /* Loads any font table into client memory. */ |
- /* */ |
- /* <Input> */ |
- /* face :: The face object to look for. */ |
- /* */ |
- /* tag :: The tag of table to load. Use the value 0 if you want */ |
- /* to access the whole font file, else set this parameter */ |
- /* to a valid TrueType table tag that you can forge with */ |
- /* the MAKE_TT_TAG macro. */ |
- /* */ |
- /* offset :: The starting offset in the table (or the file if */ |
- /* tag == 0). */ |
- /* */ |
- /* length :: The address of the decision variable: */ |
- /* */ |
- /* If length == NULL: */ |
- /* Loads the whole table. Returns an error if */ |
- /* `offset' == 0! */ |
- /* */ |
- /* If *length == 0: */ |
- /* Exits immediately; returning the length of the given */ |
- /* table or of the font file, depending on the value of */ |
- /* `tag'. */ |
- /* */ |
- /* If *length != 0: */ |
- /* Loads the next `length' bytes of table or font, */ |
- /* starting at offset `offset' (in table or font too). */ |
- /* */ |
- /* <Output> */ |
- /* buffer :: The address of target buffer. */ |
- /* */ |
- /* <Return> */ |
- /* FreeType error code. 0 means success. */ |
- /* */ |
- FT_LOCAL_DEF( FT_Error ) |
- tt_face_load_any( TT_Face face, |
- FT_ULong tag, |
- FT_Long offset, |
- FT_Byte* buffer, |
- FT_ULong* length ) |
- { |
- FT_Error error; |
- FT_Stream stream; |
- TT_Table table; |
- FT_ULong size; |
- |
- |
- if ( tag != 0 ) |
- { |
- /* look for tag in font directory */ |
- table = tt_face_lookup_table( face, tag ); |
- if ( !table ) |
- { |
- error = FT_THROW( Table_Missing ); |
- goto Exit; |
- } |
- |
- offset += table->Offset; |
- size = table->Length; |
- } |
- else |
- /* tag == 0 -- the user wants to access the font file directly */ |
- size = face->root.stream->size; |
- |
- if ( length && *length == 0 ) |
- { |
- *length = size; |
- |
- return FT_Err_Ok; |
- } |
- |
- if ( length ) |
- size = *length; |
- |
- stream = face->root.stream; |
- /* the `if' is syntactic sugar for picky compilers */ |
- if ( FT_STREAM_READ_AT( offset, buffer, size ) ) |
- goto Exit; |
- |
- Exit: |
- return error; |
- } |
- |
- |
- /*************************************************************************/ |
- /* */ |
- /* <Function> */ |
- /* tt_face_load_generic_header */ |
- /* */ |
- /* <Description> */ |
- /* Loads the TrueType table `head' or `bhed'. */ |
- /* */ |
- /* <Input> */ |
- /* face :: A handle to the target face object. */ |
- /* */ |
- /* stream :: The input stream. */ |
- /* */ |
- /* <Return> */ |
- /* FreeType error code. 0 means success. */ |
- /* */ |
- static FT_Error |
- tt_face_load_generic_header( TT_Face face, |
- FT_Stream stream, |
- FT_ULong tag ) |
- { |
- FT_Error error; |
- TT_Header* header; |
- |
- static const FT_Frame_Field header_fields[] = |
- { |
-#undef FT_STRUCTURE |
-#define FT_STRUCTURE TT_Header |
- |
- FT_FRAME_START( 54 ), |
- FT_FRAME_ULONG ( Table_Version ), |
- FT_FRAME_ULONG ( Font_Revision ), |
- FT_FRAME_LONG ( CheckSum_Adjust ), |
- FT_FRAME_LONG ( Magic_Number ), |
- FT_FRAME_USHORT( Flags ), |
- FT_FRAME_USHORT( Units_Per_EM ), |
- FT_FRAME_LONG ( Created[0] ), |
- FT_FRAME_LONG ( Created[1] ), |
- FT_FRAME_LONG ( Modified[0] ), |
- FT_FRAME_LONG ( Modified[1] ), |
- FT_FRAME_SHORT ( xMin ), |
- FT_FRAME_SHORT ( yMin ), |
- FT_FRAME_SHORT ( xMax ), |
- FT_FRAME_SHORT ( yMax ), |
- FT_FRAME_USHORT( Mac_Style ), |
- FT_FRAME_USHORT( Lowest_Rec_PPEM ), |
- FT_FRAME_SHORT ( Font_Direction ), |
- FT_FRAME_SHORT ( Index_To_Loc_Format ), |
- FT_FRAME_SHORT ( Glyph_Data_Format ), |
- FT_FRAME_END |
- }; |
- |
- |
- error = face->goto_table( face, tag, stream, 0 ); |
- if ( error ) |
- goto Exit; |
- |
- header = &face->header; |
- |
- if ( FT_STREAM_READ_FIELDS( header_fields, header ) ) |
- goto Exit; |
- |
- FT_TRACE3(( "Units per EM: %4u\n", header->Units_Per_EM )); |
- FT_TRACE3(( "IndexToLoc: %4d\n", header->Index_To_Loc_Format )); |
- |
- Exit: |
- return error; |
- } |
- |
- |
- FT_LOCAL_DEF( FT_Error ) |
- tt_face_load_head( TT_Face face, |
- FT_Stream stream ) |
- { |
- return tt_face_load_generic_header( face, stream, TTAG_head ); |
- } |
- |
- |
-#ifdef TT_CONFIG_OPTION_EMBEDDED_BITMAPS |
- |
- FT_LOCAL_DEF( FT_Error ) |
- tt_face_load_bhed( TT_Face face, |
- FT_Stream stream ) |
- { |
- return tt_face_load_generic_header( face, stream, TTAG_bhed ); |
- } |
- |
-#endif /* TT_CONFIG_OPTION_EMBEDDED_BITMAPS */ |
- |
- |
- /*************************************************************************/ |
- /* */ |
- /* <Function> */ |
- /* tt_face_load_max_profile */ |
- /* */ |
- /* <Description> */ |
- /* Loads the maximum profile into a face object. */ |
- /* */ |
- /* <Input> */ |
- /* face :: A handle to the target face object. */ |
- /* */ |
- /* stream :: The input stream. */ |
- /* */ |
- /* <Return> */ |
- /* FreeType error code. 0 means success. */ |
- /* */ |
- FT_LOCAL_DEF( FT_Error ) |
- tt_face_load_maxp( TT_Face face, |
- FT_Stream stream ) |
- { |
- FT_Error error; |
- TT_MaxProfile* maxProfile = &face->max_profile; |
- |
- static const FT_Frame_Field maxp_fields[] = |
- { |
-#undef FT_STRUCTURE |
-#define FT_STRUCTURE TT_MaxProfile |
- |
- FT_FRAME_START( 6 ), |
- FT_FRAME_LONG ( version ), |
- FT_FRAME_USHORT( numGlyphs ), |
- FT_FRAME_END |
- }; |
- |
- static const FT_Frame_Field maxp_fields_extra[] = |
- { |
- FT_FRAME_START( 26 ), |
- FT_FRAME_USHORT( maxPoints ), |
- FT_FRAME_USHORT( maxContours ), |
- FT_FRAME_USHORT( maxCompositePoints ), |
- FT_FRAME_USHORT( maxCompositeContours ), |
- FT_FRAME_USHORT( maxZones ), |
- FT_FRAME_USHORT( maxTwilightPoints ), |
- FT_FRAME_USHORT( maxStorage ), |
- FT_FRAME_USHORT( maxFunctionDefs ), |
- FT_FRAME_USHORT( maxInstructionDefs ), |
- FT_FRAME_USHORT( maxStackElements ), |
- FT_FRAME_USHORT( maxSizeOfInstructions ), |
- FT_FRAME_USHORT( maxComponentElements ), |
- FT_FRAME_USHORT( maxComponentDepth ), |
- FT_FRAME_END |
- }; |
- |
- |
- error = face->goto_table( face, TTAG_maxp, stream, 0 ); |
- if ( error ) |
- goto Exit; |
- |
- if ( FT_STREAM_READ_FIELDS( maxp_fields, maxProfile ) ) |
- goto Exit; |
- |
- maxProfile->maxPoints = 0; |
- maxProfile->maxContours = 0; |
- maxProfile->maxCompositePoints = 0; |
- maxProfile->maxCompositeContours = 0; |
- maxProfile->maxZones = 0; |
- maxProfile->maxTwilightPoints = 0; |
- maxProfile->maxStorage = 0; |
- maxProfile->maxFunctionDefs = 0; |
- maxProfile->maxInstructionDefs = 0; |
- maxProfile->maxStackElements = 0; |
- maxProfile->maxSizeOfInstructions = 0; |
- maxProfile->maxComponentElements = 0; |
- maxProfile->maxComponentDepth = 0; |
- |
- if ( maxProfile->version >= 0x10000L ) |
- { |
- if ( FT_STREAM_READ_FIELDS( maxp_fields_extra, maxProfile ) ) |
- goto Exit; |
- |
- /* XXX: an adjustment that is necessary to load certain */ |
- /* broken fonts like `Keystrokes MT' :-( */ |
- /* */ |
- /* We allocate 64 function entries by default when */ |
- /* the maxFunctionDefs value is smaller. */ |
- |
- if ( maxProfile->maxFunctionDefs < 64 ) |
- maxProfile->maxFunctionDefs = 64; |
- |
- /* we add 4 phantom points later */ |
- if ( maxProfile->maxTwilightPoints > ( 0xFFFFU - 4 ) ) |
- { |
- FT_TRACE0(( "tt_face_load_maxp:" |
- " too much twilight points in `maxp' table;\n" |
- " " |
- " some glyphs might be rendered incorrectly\n" )); |
- |
- maxProfile->maxTwilightPoints = 0xFFFFU - 4; |
- } |
- |
- /* we arbitrarily limit recursion to avoid stack exhaustion */ |
- if ( maxProfile->maxComponentDepth > 100 ) |
- { |
- FT_TRACE0(( "tt_face_load_maxp:" |
- " abnormally large component depth (%d) set to 100\n", |
- maxProfile->maxComponentDepth )); |
- maxProfile->maxComponentDepth = 100; |
- } |
- } |
- |
- FT_TRACE3(( "numGlyphs: %u\n", maxProfile->numGlyphs )); |
- |
- Exit: |
- return error; |
- } |
- |
- |
- /*************************************************************************/ |
- /* */ |
- /* <Function> */ |
- /* tt_face_load_name */ |
- /* */ |
- /* <Description> */ |
- /* Loads the name records. */ |
- /* */ |
- /* <Input> */ |
- /* face :: A handle to the target face object. */ |
- /* */ |
- /* stream :: The input stream. */ |
- /* */ |
- /* <Return> */ |
- /* FreeType error code. 0 means success. */ |
- /* */ |
- FT_LOCAL_DEF( FT_Error ) |
- tt_face_load_name( TT_Face face, |
- FT_Stream stream ) |
- { |
- FT_Error error; |
- FT_Memory memory = stream->memory; |
- FT_ULong table_pos, table_len; |
- FT_ULong storage_start, storage_limit; |
- FT_UInt count; |
- TT_NameTable table; |
- |
- static const FT_Frame_Field name_table_fields[] = |
- { |
-#undef FT_STRUCTURE |
-#define FT_STRUCTURE TT_NameTableRec |
- |
- FT_FRAME_START( 6 ), |
- FT_FRAME_USHORT( format ), |
- FT_FRAME_USHORT( numNameRecords ), |
- FT_FRAME_USHORT( storageOffset ), |
- FT_FRAME_END |
- }; |
- |
- static const FT_Frame_Field name_record_fields[] = |
- { |
-#undef FT_STRUCTURE |
-#define FT_STRUCTURE TT_NameEntryRec |
- |
- /* no FT_FRAME_START */ |
- FT_FRAME_USHORT( platformID ), |
- FT_FRAME_USHORT( encodingID ), |
- FT_FRAME_USHORT( languageID ), |
- FT_FRAME_USHORT( nameID ), |
- FT_FRAME_USHORT( stringLength ), |
- FT_FRAME_USHORT( stringOffset ), |
- FT_FRAME_END |
- }; |
- |
- |
- table = &face->name_table; |
- table->stream = stream; |
- |
- error = face->goto_table( face, TTAG_name, stream, &table_len ); |
- if ( error ) |
- goto Exit; |
- |
- table_pos = FT_STREAM_POS(); |
- |
- |
- if ( FT_STREAM_READ_FIELDS( name_table_fields, table ) ) |
- goto Exit; |
- |
- /* Some popular Asian fonts have an invalid `storageOffset' value */ |
- /* (it should be at least "6 + 12*num_names"). However, the string */ |
- /* offsets, computed as "storageOffset + entry->stringOffset", are */ |
- /* valid pointers within the name table... */ |
- /* */ |
- /* We thus can't check `storageOffset' right now. */ |
- /* */ |
- storage_start = table_pos + 6 + 12*table->numNameRecords; |
- storage_limit = table_pos + table_len; |
- |
- if ( storage_start > storage_limit ) |
- { |
- FT_ERROR(( "tt_face_load_name: invalid `name' table\n" )); |
- error = FT_THROW( Name_Table_Missing ); |
- goto Exit; |
- } |
- |
- /* Allocate the array of name records. */ |
- count = table->numNameRecords; |
- table->numNameRecords = 0; |
- |
- if ( FT_NEW_ARRAY( table->names, count ) || |
- FT_FRAME_ENTER( count * 12 ) ) |
- goto Exit; |
- |
- /* Load the name records and determine how much storage is needed */ |
- /* to hold the strings themselves. */ |
- { |
- TT_NameEntryRec* entry = table->names; |
- |
- |
- for ( ; count > 0; count-- ) |
- { |
- if ( FT_STREAM_READ_FIELDS( name_record_fields, entry ) ) |
- continue; |
- |
- /* check that the name is not empty */ |
- if ( entry->stringLength == 0 ) |
- continue; |
- |
- /* check that the name string is within the table */ |
- entry->stringOffset += table_pos + table->storageOffset; |
- if ( entry->stringOffset < storage_start || |
- entry->stringOffset + entry->stringLength > storage_limit ) |
- { |
- /* invalid entry - ignore it */ |
- entry->stringOffset = 0; |
- entry->stringLength = 0; |
- continue; |
- } |
- |
- entry++; |
- } |
- |
- table->numNameRecords = (FT_UInt)( entry - table->names ); |
- } |
- |
- FT_FRAME_EXIT(); |
- |
- /* everything went well, update face->num_names */ |
- face->num_names = (FT_UShort) table->numNameRecords; |
- |
- Exit: |
- return error; |
- } |
- |
- |
- /*************************************************************************/ |
- /* */ |
- /* <Function> */ |
- /* tt_face_free_names */ |
- /* */ |
- /* <Description> */ |
- /* Frees the name records. */ |
- /* */ |
- /* <Input> */ |
- /* face :: A handle to the target face object. */ |
- /* */ |
- FT_LOCAL_DEF( void ) |
- tt_face_free_name( TT_Face face ) |
- { |
- FT_Memory memory = face->root.driver->root.memory; |
- TT_NameTable table = &face->name_table; |
- TT_NameEntry entry = table->names; |
- FT_UInt count = table->numNameRecords; |
- |
- |
- if ( table->names ) |
- { |
- for ( ; count > 0; count--, entry++ ) |
- { |
- FT_FREE( entry->string ); |
- entry->stringLength = 0; |
- } |
- |
- /* free strings table */ |
- FT_FREE( table->names ); |
- } |
- |
- table->numNameRecords = 0; |
- table->format = 0; |
- table->storageOffset = 0; |
- } |
- |
- |
- /*************************************************************************/ |
- /* */ |
- /* <Function> */ |
- /* tt_face_load_cmap */ |
- /* */ |
- /* <Description> */ |
- /* Loads the cmap directory in a face object. The cmaps themselves */ |
- /* are loaded on demand in the `ttcmap.c' module. */ |
- /* */ |
- /* <Input> */ |
- /* face :: A handle to the target face object. */ |
- /* */ |
- /* stream :: A handle to the input stream. */ |
- /* */ |
- /* <Return> */ |
- /* FreeType error code. 0 means success. */ |
- /* */ |
- |
- FT_LOCAL_DEF( FT_Error ) |
- tt_face_load_cmap( TT_Face face, |
- FT_Stream stream ) |
- { |
- FT_Error error; |
- |
- |
- error = face->goto_table( face, TTAG_cmap, stream, &face->cmap_size ); |
- if ( error ) |
- goto Exit; |
- |
- if ( FT_FRAME_EXTRACT( face->cmap_size, face->cmap_table ) ) |
- face->cmap_size = 0; |
- |
- Exit: |
- return error; |
- } |
- |
- |
- |
- /*************************************************************************/ |
- /* */ |
- /* <Function> */ |
- /* tt_face_load_os2 */ |
- /* */ |
- /* <Description> */ |
- /* Loads the OS2 table. */ |
- /* */ |
- /* <Input> */ |
- /* face :: A handle to the target face object. */ |
- /* */ |
- /* stream :: A handle to the input stream. */ |
- /* */ |
- /* <Return> */ |
- /* FreeType error code. 0 means success. */ |
- /* */ |
- FT_LOCAL_DEF( FT_Error ) |
- tt_face_load_os2( TT_Face face, |
- FT_Stream stream ) |
- { |
- FT_Error error; |
- TT_OS2* os2; |
- |
- static const FT_Frame_Field os2_fields[] = |
- { |
-#undef FT_STRUCTURE |
-#define FT_STRUCTURE TT_OS2 |
- |
- FT_FRAME_START( 78 ), |
- FT_FRAME_USHORT( version ), |
- FT_FRAME_SHORT ( xAvgCharWidth ), |
- FT_FRAME_USHORT( usWeightClass ), |
- FT_FRAME_USHORT( usWidthClass ), |
- FT_FRAME_SHORT ( fsType ), |
- FT_FRAME_SHORT ( ySubscriptXSize ), |
- FT_FRAME_SHORT ( ySubscriptYSize ), |
- FT_FRAME_SHORT ( ySubscriptXOffset ), |
- FT_FRAME_SHORT ( ySubscriptYOffset ), |
- FT_FRAME_SHORT ( ySuperscriptXSize ), |
- FT_FRAME_SHORT ( ySuperscriptYSize ), |
- FT_FRAME_SHORT ( ySuperscriptXOffset ), |
- FT_FRAME_SHORT ( ySuperscriptYOffset ), |
- FT_FRAME_SHORT ( yStrikeoutSize ), |
- FT_FRAME_SHORT ( yStrikeoutPosition ), |
- FT_FRAME_SHORT ( sFamilyClass ), |
- FT_FRAME_BYTE ( panose[0] ), |
- FT_FRAME_BYTE ( panose[1] ), |
- FT_FRAME_BYTE ( panose[2] ), |
- FT_FRAME_BYTE ( panose[3] ), |
- FT_FRAME_BYTE ( panose[4] ), |
- FT_FRAME_BYTE ( panose[5] ), |
- FT_FRAME_BYTE ( panose[6] ), |
- FT_FRAME_BYTE ( panose[7] ), |
- FT_FRAME_BYTE ( panose[8] ), |
- FT_FRAME_BYTE ( panose[9] ), |
- FT_FRAME_ULONG ( ulUnicodeRange1 ), |
- FT_FRAME_ULONG ( ulUnicodeRange2 ), |
- FT_FRAME_ULONG ( ulUnicodeRange3 ), |
- FT_FRAME_ULONG ( ulUnicodeRange4 ), |
- FT_FRAME_BYTE ( achVendID[0] ), |
- FT_FRAME_BYTE ( achVendID[1] ), |
- FT_FRAME_BYTE ( achVendID[2] ), |
- FT_FRAME_BYTE ( achVendID[3] ), |
- |
- FT_FRAME_USHORT( fsSelection ), |
- FT_FRAME_USHORT( usFirstCharIndex ), |
- FT_FRAME_USHORT( usLastCharIndex ), |
- FT_FRAME_SHORT ( sTypoAscender ), |
- FT_FRAME_SHORT ( sTypoDescender ), |
- FT_FRAME_SHORT ( sTypoLineGap ), |
- FT_FRAME_USHORT( usWinAscent ), |
- FT_FRAME_USHORT( usWinDescent ), |
- FT_FRAME_END |
- }; |
- |
- static const FT_Frame_Field os2_fields_extra[] = |
- { |
- FT_FRAME_START( 8 ), |
- FT_FRAME_ULONG( ulCodePageRange1 ), |
- FT_FRAME_ULONG( ulCodePageRange2 ), |
- FT_FRAME_END |
- }; |
- |
- static const FT_Frame_Field os2_fields_extra2[] = |
- { |
- FT_FRAME_START( 10 ), |
- FT_FRAME_SHORT ( sxHeight ), |
- FT_FRAME_SHORT ( sCapHeight ), |
- FT_FRAME_USHORT( usDefaultChar ), |
- FT_FRAME_USHORT( usBreakChar ), |
- FT_FRAME_USHORT( usMaxContext ), |
- FT_FRAME_END |
- }; |
- |
- |
- /* We now support old Mac fonts where the OS/2 table doesn't */ |
- /* exist. Simply put, we set the `version' field to 0xFFFF */ |
- /* and test this value each time we need to access the table. */ |
- error = face->goto_table( face, TTAG_OS2, stream, 0 ); |
- if ( error ) |
- goto Exit; |
- |
- os2 = &face->os2; |
- |
- if ( FT_STREAM_READ_FIELDS( os2_fields, os2 ) ) |
- goto Exit; |
- |
- os2->ulCodePageRange1 = 0; |
- os2->ulCodePageRange2 = 0; |
- os2->sxHeight = 0; |
- os2->sCapHeight = 0; |
- os2->usDefaultChar = 0; |
- os2->usBreakChar = 0; |
- os2->usMaxContext = 0; |
- |
- if ( os2->version >= 0x0001 ) |
- { |
- /* only version 1 tables */ |
- if ( FT_STREAM_READ_FIELDS( os2_fields_extra, os2 ) ) |
- goto Exit; |
- |
- if ( os2->version >= 0x0002 ) |
- { |
- /* only version 2 tables */ |
- if ( FT_STREAM_READ_FIELDS( os2_fields_extra2, os2 ) ) |
- goto Exit; |
- } |
- } |
- |
- FT_TRACE3(( "sTypoAscender: %4d\n", os2->sTypoAscender )); |
- FT_TRACE3(( "sTypoDescender: %4d\n", os2->sTypoDescender )); |
- FT_TRACE3(( "usWinAscent: %4u\n", os2->usWinAscent )); |
- FT_TRACE3(( "usWinDescent: %4u\n", os2->usWinDescent )); |
- FT_TRACE3(( "fsSelection: 0x%2x\n", os2->fsSelection )); |
- |
- Exit: |
- /*return error;*/ |
- return 0; /* XYQ 2007-11-23 We can't just quit if OS/2 table can't be loaded. |
- TESTDOC: Bug #3160 - MyDoc.pdf */ |
- |
- } |
- |
- |
- /*************************************************************************/ |
- /* */ |
- /* <Function> */ |
- /* tt_face_load_postscript */ |
- /* */ |
- /* <Description> */ |
- /* Loads the Postscript table. */ |
- /* */ |
- /* <Input> */ |
- /* face :: A handle to the target face object. */ |
- /* */ |
- /* stream :: A handle to the input stream. */ |
- /* */ |
- /* <Return> */ |
- /* FreeType error code. 0 means success. */ |
- /* */ |
- FT_LOCAL_DEF( FT_Error ) |
- tt_face_load_post( TT_Face face, |
- FT_Stream stream ) |
- { |
- FT_Error error; |
- TT_Postscript* post = &face->postscript; |
- |
- static const FT_Frame_Field post_fields[] = |
- { |
-#undef FT_STRUCTURE |
-#define FT_STRUCTURE TT_Postscript |
- |
- FT_FRAME_START( 32 ), |
- FT_FRAME_ULONG( FormatType ), |
- FT_FRAME_ULONG( italicAngle ), |
- FT_FRAME_SHORT( underlinePosition ), |
- FT_FRAME_SHORT( underlineThickness ), |
- FT_FRAME_ULONG( isFixedPitch ), |
- FT_FRAME_ULONG( minMemType42 ), |
- FT_FRAME_ULONG( maxMemType42 ), |
- FT_FRAME_ULONG( minMemType1 ), |
- FT_FRAME_ULONG( maxMemType1 ), |
- FT_FRAME_END |
- }; |
- |
- |
- error = face->goto_table( face, TTAG_post, stream, 0 ); |
- if ( error ) |
- return error; |
- |
- if ( FT_STREAM_READ_FIELDS( post_fields, post ) ) |
- return error; |
- |
- /* we don't load the glyph names, we do that in another */ |
- /* module (ttpost). */ |
- |
- FT_TRACE3(( "FormatType: 0x%x\n", post->FormatType )); |
- FT_TRACE3(( "isFixedPitch: %s\n", post->isFixedPitch |
- ? " yes" : " no" )); |
- |
- return FT_Err_Ok; |
- } |
- |
- |
- /*************************************************************************/ |
- /* */ |
- /* <Function> */ |
- /* tt_face_load_pclt */ |
- /* */ |
- /* <Description> */ |
- /* Loads the PCL 5 Table. */ |
- /* */ |
- /* <Input> */ |
- /* face :: A handle to the target face object. */ |
- /* */ |
- /* stream :: A handle to the input stream. */ |
- /* */ |
- /* <Return> */ |
- /* FreeType error code. 0 means success. */ |
- /* */ |
- FT_LOCAL_DEF( FT_Error ) |
- tt_face_load_pclt( TT_Face face, |
- FT_Stream stream ) |
- { |
- static const FT_Frame_Field pclt_fields[] = |
- { |
-#undef FT_STRUCTURE |
-#define FT_STRUCTURE TT_PCLT |
- |
- FT_FRAME_START( 54 ), |
- FT_FRAME_ULONG ( Version ), |
- FT_FRAME_ULONG ( FontNumber ), |
- FT_FRAME_USHORT( Pitch ), |
- FT_FRAME_USHORT( xHeight ), |
- FT_FRAME_USHORT( Style ), |
- FT_FRAME_USHORT( TypeFamily ), |
- FT_FRAME_USHORT( CapHeight ), |
- FT_FRAME_BYTES ( TypeFace, 16 ), |
- FT_FRAME_BYTES ( CharacterComplement, 8 ), |
- FT_FRAME_BYTES ( FileName, 6 ), |
- FT_FRAME_CHAR ( StrokeWeight ), |
- FT_FRAME_CHAR ( WidthType ), |
- FT_FRAME_BYTE ( SerifStyle ), |
- FT_FRAME_BYTE ( Reserved ), |
- FT_FRAME_END |
- }; |
- |
- FT_Error error; |
- TT_PCLT* pclt = &face->pclt; |
- |
- |
- /* optional table */ |
- error = face->goto_table( face, TTAG_PCLT, stream, 0 ); |
- if ( error ) |
- goto Exit; |
- |
- if ( FT_STREAM_READ_FIELDS( pclt_fields, pclt ) ) |
- goto Exit; |
- |
- Exit: |
- return error; |
- } |
- |
- |
- /*************************************************************************/ |
- /* */ |
- /* <Function> */ |
- /* tt_face_load_gasp */ |
- /* */ |
- /* <Description> */ |
- /* Loads the `gasp' table into a face object. */ |
- /* */ |
- /* <Input> */ |
- /* face :: A handle to the target face object. */ |
- /* */ |
- /* stream :: The input stream. */ |
- /* */ |
- /* <Return> */ |
- /* FreeType error code. 0 means success. */ |
- /* */ |
- FT_LOCAL_DEF( FT_Error ) |
- tt_face_load_gasp( TT_Face face, |
- FT_Stream stream ) |
- { |
- FT_Error error; |
- FT_Memory memory = stream->memory; |
- |
- FT_UInt j,num_ranges; |
- TT_GaspRange gaspranges = NULL; |
- |
- |
- /* the gasp table is optional */ |
- error = face->goto_table( face, TTAG_gasp, stream, 0 ); |
- if ( error ) |
- goto Exit; |
- |
- if ( FT_FRAME_ENTER( 4L ) ) |
- goto Exit; |
- |
- face->gasp.version = FT_GET_USHORT(); |
- face->gasp.numRanges = FT_GET_USHORT(); |
- |
- FT_FRAME_EXIT(); |
- |
- /* only support versions 0 and 1 of the table */ |
- if ( face->gasp.version >= 2 ) |
- { |
- face->gasp.numRanges = 0; |
- error = FT_THROW( Invalid_Table ); |
- goto Exit; |
- } |
- |
- num_ranges = face->gasp.numRanges; |
- FT_TRACE3(( "numRanges: %u\n", num_ranges )); |
- |
- if ( FT_QNEW_ARRAY( face->gasp.gaspRanges, num_ranges ) || |
- FT_FRAME_ENTER( num_ranges * 4L ) ) |
- goto Exit; |
- |
- gaspranges = face->gasp.gaspRanges; |
- |
- for ( j = 0; j < num_ranges; j++ ) |
- { |
- gaspranges[j].maxPPEM = FT_GET_USHORT(); |
- gaspranges[j].gaspFlag = FT_GET_USHORT(); |
- |
- FT_TRACE3(( "gaspRange %d: rangeMaxPPEM %5d, rangeGaspBehavior 0x%x\n", |
- j, |
- gaspranges[j].maxPPEM, |
- gaspranges[j].gaspFlag )); |
- } |
- |
- FT_FRAME_EXIT(); |
- |
- Exit: |
- return error; |
- } |
- |
- |
-/* END */ |