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 */
}
FT_FRAME_SHORT( characterWidth ),
FT_FRAME_SHORT( ascent ),
FT_FRAME_SHORT( descent ),
FT_FRAME_SHORT( attributes ),
FT_FRAME_END
};
static
const FT_Frame_Field pcf_compressed_metric_header[] =
{
#undef FT_STRUCTURE
#define FT_STRUCTURE PCF_Compressed_MetricRec
FT_FRAME_START( 5 ),
FT_FRAME_BYTE( leftSideBearing ),
FT_FRAME_BYTE( rightSideBearing ),
FT_FRAME_BYTE( characterWidth ),
FT_FRAME_BYTE( ascent ),
FT_FRAME_BYTE( descent ),
FT_FRAME_END
};
static FT_Error
pcf_get_metric( FT_Stream stream,
FT_ULong format,
PCF_Metric metric )
{
FT_Error error = PCF_Err_Ok;
cff_font_load( FT_Library library,
FT_Stream stream,
FT_Int face_index,
CFF_Font font,
FT_Bool pure_cff )
{
static const FT_Frame_Field cff_header_fields[] =
{
#undef FT_STRUCTURE
#define FT_STRUCTURE CFF_FontRec
FT_FRAME_START( 4 ),
FT_FRAME_BYTE( version_major ),
FT_FRAME_BYTE( version_minor ),
FT_FRAME_BYTE( header_size ),
FT_FRAME_BYTE( absolute_offsize ),
FT_FRAME_END
};
FT_Error error;
FT_Memory memory = stream->memory;
FT_ULong base_offset;
CFF_FontRecDict dict;
CFF_IndexRec string_index;
FT_UInt subfont_index;
FT_ZERO( font );
FT_ZERO( &string_index );
font->stream = stream;
font->memory = memory;
dict = &font->top_font.font_dict;
base_offset = FT_STREAM_POS();
/* read CFF font header */
if ( FT_STREAM_READ_FIELDS( cff_header_fields, font ) )
goto Exit;
/* check format */
if ( font->version_major != 1 ||
font->header_size < 4 ||
font->absolute_offsize > 4 )
{
FT_TRACE2(( " not a CFF font header\n" ));
error = FT_THROW( Unknown_File_Format );
goto Exit;
}
/* skip the rest of the header */
if ( FT_STREAM_SKIP( font->header_size - 4 ) )
goto Exit;
/* read the name, top dict, string and global subrs index */
if ( FT_SET_ERROR( cff_index_init( &font->name_index,
stream, 0 ) ) ||
FT_SET_ERROR( cff_index_init( &font->font_dict_index,
stream, 0 ) ) ||
FT_SET_ERROR( cff_index_init( &string_index,
stream, 1 ) ) ||
FT_SET_ERROR( cff_index_init( &font->global_subrs_index,
stream, 1 ) ) ||
FT_SET_ERROR( cff_index_get_pointers( &string_index,
&font->strings,
&font->string_pool ) ) )
goto Exit;
font->num_strings = string_index.count;
if ( pure_cff )
{
/* well, we don't really forget the `disabled' fonts... */
subfont_index = (FT_UInt)( face_index & 0xFFFF );
if ( face_index > 0 && subfont_index >= font->name_index.count )
{
FT_ERROR(( "cff_font_load:"
" invalid subfont index for pure CFF font (%d)\n",
subfont_index ));
error = FT_THROW( Invalid_Argument );
goto Exit;
}
font->num_faces = font->name_index.count;
}
else
{
subfont_index = 0;
if ( font->name_index.count > 1 )
{
FT_ERROR(( "cff_font_load:"
" invalid CFF font with multiple subfonts\n"
" "
" in SFNT wrapper\n" ));
error = FT_THROW( Invalid_File_Format );
goto Exit;
}
}
/* in case of a font format check, simply exit now */
if ( face_index < 0 )
goto Exit;
/* now, parse the top-level font dictionary */
FT_TRACE4(( "parsing top-level\n" ));
error = cff_subfont_load( &font->top_font,
&font->font_dict_index,
subfont_index,
stream,
base_offset,
library );
if ( error )
goto Exit;
if ( FT_STREAM_SEEK( base_offset + dict->charstrings_offset ) )
goto Exit;
error = cff_index_init( &font->charstrings_index, stream, 0 );
if ( error )
goto Exit;
/* now, check for a CID font */
if ( dict->cid_registry != 0xFFFFU )
{
CFF_IndexRec fd_index;
CFF_SubFont sub = NULL;
FT_UInt idx;
/* this is a CID-keyed font, we must now allocate a table of */
/* sub-fonts, then load each of them separately */
if ( FT_STREAM_SEEK( base_offset + dict->cid_fd_array_offset ) )
goto Exit;
error = cff_index_init( &fd_index, stream, 0 );
if ( error )
goto Exit;
if ( fd_index.count > CFF_MAX_CID_FONTS )
{
FT_TRACE0(( "cff_font_load: FD array too large in CID font\n" ));
goto Fail_CID;
}
/* allocate & read each font dict independently */
font->num_subfonts = fd_index.count;
if ( FT_NEW_ARRAY( sub, fd_index.count ) )
goto Fail_CID;
/* set up pointer table */
for ( idx = 0; idx < fd_index.count; idx++ )
font->subfonts[idx] = sub + idx;
/* now load each subfont independently */
for ( idx = 0; idx < fd_index.count; idx++ )
{
sub = font->subfonts[idx];
FT_TRACE4(( "parsing subfont %u\n", idx ));
error = cff_subfont_load( sub, &fd_index, idx,
stream, base_offset, library );
if ( error )
goto Fail_CID;
}
/* now load the FD Select array */
error = CFF_Load_FD_Select( &font->fd_select,
font->charstrings_index.count,
stream,
base_offset + dict->cid_fd_select_offset );
Fail_CID:
cff_index_done( &fd_index );
if ( error )
goto Exit;
}
else
font->num_subfonts = 0;
/* read the charstrings index now */
if ( dict->charstrings_offset == 0 )
{
FT_ERROR(( "cff_font_load: no charstrings offset\n" ));
error = FT_THROW( Invalid_File_Format );
goto Exit;
}
font->num_glyphs = font->charstrings_index.count;
error = cff_index_get_pointers( &font->global_subrs_index,
&font->global_subrs, NULL );
if ( error )
goto Exit;
/* read the Charset and Encoding tables if available */
if ( font->num_glyphs > 0 )
{
FT_Bool invert = FT_BOOL( dict->cid_registry != 0xFFFFU && pure_cff );
error = cff_charset_load( &font->charset, font->num_glyphs, stream,
base_offset, dict->charset_offset, invert );
if ( error )
goto Exit;
/* CID-keyed CFFs don't have an encoding */
if ( dict->cid_registry == 0xFFFFU )
{
error = cff_encoding_load( &font->encoding,
&font->charset,
font->num_glyphs,
stream,
base_offset,
dict->encoding_offset );
if ( error )
goto Exit;
}
}
/* get the font name (/CIDFontName for CID-keyed fonts, */
/* /FontName otherwise) */
font->font_name = cff_index_get_name( font, subfont_index );
Exit:
cff_index_done( &string_index );
return error;
}
{
#undef FT_STRUCTURE
#define FT_STRUCTURE FT_WinFNT_HeaderRec
FT_FRAME_START( 146 ),
FT_FRAME_USHORT_LE( version ),
FT_FRAME_ULONG_LE ( file_size ),
FT_FRAME_BYTES ( copyright, 60 ),
FT_FRAME_USHORT_LE( file_type ),
FT_FRAME_USHORT_LE( nominal_point_size ),
FT_FRAME_USHORT_LE( vertical_resolution ),
FT_FRAME_USHORT_LE( horizontal_resolution ),
FT_FRAME_USHORT_LE( ascent ),
FT_FRAME_USHORT_LE( internal_leading ),
FT_FRAME_USHORT_LE( external_leading ),
FT_FRAME_BYTE ( italic ),
FT_FRAME_BYTE ( underline ),
FT_FRAME_BYTE ( strike_out ),
FT_FRAME_USHORT_LE( weight ),
FT_FRAME_BYTE ( charset ),
FT_FRAME_USHORT_LE( pixel_width ),
FT_FRAME_USHORT_LE( pixel_height ),
FT_FRAME_BYTE ( pitch_and_family ),
FT_FRAME_USHORT_LE( avg_width ),
FT_FRAME_USHORT_LE( max_width ),
FT_FRAME_BYTE ( first_char ),
FT_FRAME_BYTE ( last_char ),
FT_FRAME_BYTE ( default_char ),
FT_FRAME_BYTE ( break_char ),
FT_FRAME_USHORT_LE( bytes_per_row ),
FT_FRAME_ULONG_LE ( device_offset ),
FT_FRAME_USHORT( log_dir_size ),
FT_FRAME_USHORT( log_dir_offset ),
FT_FRAME_USHORT( log_font_max_size ),
FT_FRAME_UOFF3 ( log_font_section_size ),
FT_FRAME_UOFF3 ( log_font_section_offset ),
FT_FRAME_USHORT( phy_font_max_size ),
FT_FRAME_UOFF3 ( phy_font_section_size ),
FT_FRAME_UOFF3 ( phy_font_section_offset ),
FT_FRAME_USHORT( gps_max_size ),
FT_FRAME_UOFF3 ( gps_section_size ),
FT_FRAME_UOFF3 ( gps_section_offset ),
FT_FRAME_BYTE ( max_blue_values ),
FT_FRAME_BYTE ( max_x_orus ),
FT_FRAME_BYTE ( max_y_orus ),
FT_FRAME_BYTE ( phy_font_max_size_high ),
FT_FRAME_BYTE ( color_flags ),
FT_FRAME_UOFF3 ( bct_max_size ),
FT_FRAME_UOFF3 ( bct_set_max_size ),
FT_FRAME_UOFF3 ( phy_bct_set_max_size ),
FT_FRAME_USHORT( num_phy_fonts ),
FT_FRAME_BYTE ( max_vert_stem_snap ),
FT_FRAME_BYTE ( max_horz_stem_snap ),
FT_FRAME_USHORT( max_chars ),
FT_FRAME_END
cff_font_load( FT_Stream stream,
FT_Int face_index,
CFF_Font font )
{
static const FT_Frame_Field cff_header_fields[] =
{
#undef FT_STRUCTURE
#define FT_STRUCTURE CFF_FontRec
FT_FRAME_START( 4 ),
FT_FRAME_BYTE( version_major ),
FT_FRAME_BYTE( version_minor ),
FT_FRAME_BYTE( header_size ),
FT_FRAME_BYTE( absolute_offsize ),
FT_FRAME_END
};
FT_Error error;
FT_Memory memory = stream->memory;
FT_ULong base_offset;
CFF_FontRecDict dict;
FT_ZERO( font );
font->stream = stream;
font->memory = memory;
dict = &font->top_font.font_dict;
base_offset = FT_STREAM_POS();
/* read CFF font header */
if ( FT_STREAM_READ_FIELDS( cff_header_fields, font ) )
goto Exit;
/* check format */
if ( font->version_major != 1 ||
font->header_size < 4 ||
font->absolute_offsize > 4 )
{
FT_TRACE2(( "[not a CFF font header!]\n" ));
error = CFF_Err_Unknown_File_Format;
goto Exit;
}
/* skip the rest of the header */
if ( FT_STREAM_SKIP( font->header_size - 4 ) )
goto Exit;
/* read the name, top dict, string and global subrs index */
if ( FT_SET_ERROR( cff_new_index( &font->name_index, stream, 0 )) ||
FT_SET_ERROR( cff_new_index( &font->font_dict_index, stream, 0 )) ||
FT_SET_ERROR( cff_new_index( &font->string_index, stream, 0 )) ||
FT_SET_ERROR( cff_new_index( &font->global_subrs_index, stream, 1 )) )
goto Exit;
/* well, we don't really forget the `disabled' fonts... */
font->num_faces = font->name_index.count;
if ( face_index >= (FT_Int)font->num_faces )
{
FT_ERROR(( "cff_font_load: incorrect face index = %d\n",
face_index ));
error = CFF_Err_Invalid_Argument;
}
/* in case of a font format check, simply exit now */
if ( face_index < 0 )
goto Exit;
/* now, parse the top-level font dictionary */
error = cff_subfont_load( &font->top_font,
&font->font_dict_index,
face_index,
stream,
base_offset );
if ( error )
goto Exit;
/* now, check for a CID font */
if ( dict->cid_registry )
{
CFF_IndexRec fd_index;
CFF_SubFont sub;
FT_UInt idx;
/* this is a CID-keyed font, we must now allocate a table of */
/* sub-fonts, then load each of them separately */
if ( FT_STREAM_SEEK( base_offset + dict->cid_fd_array_offset ) )
goto Exit;
error = cff_new_index( &fd_index, stream, 0 );
if ( error )
goto Exit;
if ( fd_index.count > CFF_MAX_CID_FONTS )
{
FT_ERROR(( "cff_font_load: FD array too large in CID font\n" ));
goto Fail_CID;
}
/* allocate & read each font dict independently */
font->num_subfonts = fd_index.count;
if ( FT_NEW_ARRAY( sub, fd_index.count ) )
goto Fail_CID;
/* setup pointer table */
for ( idx = 0; idx < fd_index.count; idx++ )
font->subfonts[idx] = sub + idx;
/* now load each sub font independently */
for ( idx = 0; idx < fd_index.count; idx++ )
{
sub = font->subfonts[idx];
error = cff_subfont_load( sub, &fd_index, idx,
stream, base_offset );
if ( error )
goto Fail_CID;
}
/* now load the FD Select array */
error = CFF_Load_FD_Select( &font->fd_select,
(FT_UInt)dict->cid_count,
stream,
base_offset + dict->cid_fd_select_offset );
Fail_CID:
cff_done_index( &fd_index );
if ( error )
goto Exit;
}
else
font->num_subfonts = 0;
/* read the charstrings index now */
if ( dict->charstrings_offset == 0 )
{
FT_ERROR(( "cff_font_load: no charstrings offset!\n" ));
error = CFF_Err_Unknown_File_Format;
goto Exit;
}
if ( FT_STREAM_SEEK( base_offset + dict->charstrings_offset ) )
goto Exit;
error = cff_new_index( &font->charstrings_index, stream, 0 );
if ( error )
goto Exit;
/* explicit the global subrs */
font->num_global_subrs = font->global_subrs_index.count;
font->num_glyphs = font->charstrings_index.count;
error = cff_index_get_pointers( &font->global_subrs_index,
&font->global_subrs ) ;
if ( error )
goto Exit;
/* read the Charset and Encoding tables when available */
if ( font->num_glyphs > 0 )
{
error = cff_charset_load( &font->charset, font->num_glyphs, stream,
base_offset, dict->charset_offset );
if ( error )
goto Exit;
error = cff_encoding_load( &font->encoding,
&font->charset,
font->num_glyphs,
stream,
base_offset,
dict->encoding_offset );
if ( error )
goto Exit;
}
/* get the font name */
font->font_name = cff_index_get_name( &font->name_index, face_index );
Exit:
return error;
}
