/**************************************************************************** * * sfdriver.c * * High-level SFNT driver interface (body). * * Copyright (C) 1996-2023 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 #include #include #include "sfdriver.h" #include "ttload.h" #include "sfobjs.h" #include "sferrors.h" #ifdef TT_CONFIG_OPTION_EMBEDDED_BITMAPS #include "ttsbit.h" #endif #ifdef TT_CONFIG_OPTION_COLOR_LAYERS #include "ttcolr.h" #include "ttcpal.h" #endif #ifdef FT_CONFIG_OPTION_SVG #include "ttsvg.h" #endif #ifdef TT_CONFIG_OPTION_POSTSCRIPT_NAMES #include "ttpost.h" #endif #ifdef TT_CONFIG_OPTION_BDF #include "ttbdf.h" #include #endif #include "ttcmap.h" #include "ttkern.h" #include "ttmtx.h" #include #include #include #include #ifdef TT_CONFIG_OPTION_GX_VAR_SUPPORT #include #include #endif /************************************************************************** * * 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 sfdriver /* * SFNT TABLE SERVICE * */ FT_CALLBACK_DEF( FT_Error ) sfnt_load_table( FT_Face face, /* TT_Face */ FT_ULong tag, FT_Long offset, FT_Byte* buffer, FT_ULong* length ) { TT_Face ttface = (TT_Face)face; return tt_face_load_any( ttface, tag, offset, buffer, length ); } FT_CALLBACK_DEF( void* ) get_sfnt_table( FT_Face face, /* TT_Face */ FT_Sfnt_Tag tag ) { TT_Face ttface = (TT_Face)face; void* table; switch ( tag ) { case FT_SFNT_HEAD: table = &ttface->header; break; case FT_SFNT_HHEA: table = &ttface->horizontal; break; case FT_SFNT_VHEA: table = ttface->vertical_info ? &ttface->vertical : NULL; break; case FT_SFNT_OS2: table = ( ttface->os2.version == 0xFFFFU ) ? NULL : &ttface->os2; break; case FT_SFNT_POST: table = &ttface->postscript; break; case FT_SFNT_MAXP: table = &ttface->max_profile; break; case FT_SFNT_PCLT: table = ttface->pclt.Version ? &ttface->pclt : NULL; break; default: table = NULL; } return table; } FT_CALLBACK_DEF( FT_Error ) sfnt_table_info( FT_Face face, /* TT_Face */ FT_UInt idx, FT_ULong *tag, FT_ULong *offset, FT_ULong *length ) { TT_Face ttface = (TT_Face)face; if ( !offset || !length ) return FT_THROW( Invalid_Argument ); if ( !tag ) *length = ttface->num_tables; else { if ( idx >= ttface->num_tables ) return FT_THROW( Table_Missing ); *tag = ttface->dir_tables[idx].Tag; *offset = ttface->dir_tables[idx].Offset; *length = ttface->dir_tables[idx].Length; } return FT_Err_Ok; } FT_DEFINE_SERVICE_SFNT_TABLEREC( sfnt_service_sfnt_table, sfnt_load_table, /* FT_SFNT_TableLoadFunc load_table */ get_sfnt_table, /* FT_SFNT_TableGetFunc get_table */ sfnt_table_info /* FT_SFNT_TableInfoFunc table_info */ ) #ifdef TT_CONFIG_OPTION_POSTSCRIPT_NAMES /* * GLYPH DICT SERVICE * */ FT_CALLBACK_DEF( FT_Error ) sfnt_get_glyph_name( FT_Face face, FT_UInt glyph_index, FT_Pointer buffer, FT_UInt buffer_max ) { FT_String* gname; FT_Error error; error = tt_face_get_ps_name( (TT_Face)face, glyph_index, &gname ); if ( !error ) FT_STRCPYN( buffer, gname, buffer_max ); return error; } FT_CALLBACK_DEF( FT_UInt ) sfnt_get_name_index( FT_Face face, const FT_String* glyph_name ) { TT_Face ttface = (TT_Face)face; FT_UInt i, max_gid = FT_UINT_MAX; if ( face->num_glyphs < 0 ) return 0; else if ( (FT_ULong)face->num_glyphs < FT_UINT_MAX ) max_gid = (FT_UInt)face->num_glyphs; else FT_TRACE0(( "Ignore glyph names for invalid GID 0x%08x - 0x%08lx\n", FT_UINT_MAX, face->num_glyphs )); for ( i = 0; i < max_gid; i++ ) { FT_String* gname; FT_Error error = tt_face_get_ps_name( ttface, i, &gname ); if ( error ) continue; if ( !ft_strcmp( glyph_name, gname ) ) return i; } return 0; } FT_DEFINE_SERVICE_GLYPHDICTREC( sfnt_service_glyph_dict, sfnt_get_glyph_name, /* FT_GlyphDict_GetNameFunc get_name */ sfnt_get_name_index /* FT_GlyphDict_NameIndexFunc name_index */ ) #endif /* TT_CONFIG_OPTION_POSTSCRIPT_NAMES */ /* * POSTSCRIPT NAME SERVICE * */ /* an array representing allowed ASCII characters in a PS string */ static const unsigned char sfnt_ps_map[16] = { /* 4 0 C 8 */ 0x00, 0x00, /* 0x00: 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 */ 0x00, 0x00, /* 0x10: 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 */ 0xDE, 0x7C, /* 0x20: 1 1 0 1 1 1 1 0 0 1 1 1 1 1 0 0 */ 0xFF, 0xAF, /* 0x30: 1 1 1 1 1 1 1 1 1 0 1 0 1 1 1 1 */ 0xFF, 0xFF, /* 0x40: 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 */ 0xFF, 0xD7, /* 0x50: 1 1 1 1 1 1 1 1 1 1 0 1 0 1 1 1 */ 0xFF, 0xFF, /* 0x60: 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 */ 0xFF, 0x57 /* 0x70: 1 1 1 1 1 1 1 1 0 1 0 1 0 1 1 1 */ }; static int sfnt_is_postscript( int c ) { unsigned int cc; if ( c < 0 || c >= 0x80 ) return 0; cc = (unsigned int)c; return sfnt_ps_map[cc >> 3] & ( 1 << ( cc & 0x07 ) ); } #ifdef TT_CONFIG_OPTION_GX_VAR_SUPPORT /* Only ASCII letters and digits are taken for a variation font */ /* instance's PostScript name. */ /* */ /* `ft_isalnum' is a macro, but we need a function here, thus */ /* this definition. */ static int sfnt_is_alphanumeric( int c ) { return ft_isalnum( c ); } /* the implementation of MurmurHash3 is taken and adapted from */ /* https://github.com/aappleby/smhasher/blob/master/src/MurmurHash3.cpp */ #define ROTL32( x, r ) ( x << r ) | ( x >> ( 32 - r ) ) static FT_UInt32 fmix32( FT_UInt32 h ) { h ^= h >> 16; h *= 0x85ebca6b; h ^= h >> 13; h *= 0xc2b2ae35; h ^= h >> 16; return h; } static void murmur_hash_3_128( const void* key, const unsigned int len, FT_UInt32 seed, void* out ) { const FT_Byte* data = (const FT_Byte*)key; const int nblocks = (int)len / 16; FT_UInt32 h1 = seed; FT_UInt32 h2 = seed; FT_UInt32 h3 = seed; FT_UInt32 h4 = seed; const FT_UInt32 c1 = 0x239b961b; const FT_UInt32 c2 = 0xab0e9789; const FT_UInt32 c3 = 0x38b34ae5; const FT_UInt32 c4 = 0xa1e38b93; const FT_UInt32* blocks = (const FT_UInt32*)( data + nblocks * 16 ); int i; for( i = -nblocks; i; i++ ) { FT_UInt32 k1 = blocks[i * 4 + 0]; FT_UInt32 k2 = blocks[i * 4 + 1]; FT_UInt32 k3 = blocks[i * 4 + 2]; FT_UInt32 k4 = blocks[i * 4 + 3]; k1 *= c1; k1 = ROTL32( k1, 15 ); k1 *= c2; h1 ^= k1; h1 = ROTL32( h1, 19 ); h1 += h2; h1 = h1 * 5 + 0x561ccd1b; k2 *= c2; k2 = ROTL32( k2, 16 ); k2 *= c3; h2 ^= k2; h2 = ROTL32( h2, 17 ); h2 += h3; h2 = h2 * 5 + 0x0bcaa747; k3 *= c3; k3 = ROTL32( k3, 17 ); k3 *= c4; h3 ^= k3; h3 = ROTL32( h3, 15 ); h3 += h4; h3 = h3 * 5 + 0x96cd1c35; k4 *= c4; k4 = ROTL32( k4, 18 ); k4 *= c1; h4 ^= k4; h4 = ROTL32( h4, 13 ); h4 += h1; h4 = h4 * 5 + 0x32ac3b17; } { const FT_Byte* tail = (const FT_Byte*)( data + nblocks * 16 ); FT_UInt32 k1 = 0; FT_UInt32 k2 = 0; FT_UInt32 k3 = 0; FT_UInt32 k4 = 0; switch ( len & 15 ) { case 15: k4 ^= (FT_UInt32)tail[14] << 16; FALL_THROUGH; case 14: k4 ^= (FT_UInt32)tail[13] << 8; FALL_THROUGH; case 13: k4 ^= (FT_UInt32)tail[12]; k4 *= c4; k4 = ROTL32( k4, 18 ); k4 *= c1; h4 ^= k4; FALL_THROUGH; case 12: k3 ^= (FT_UInt32)tail[11] << 24; FALL_THROUGH; case 11: k3 ^= (FT_UInt32)tail[10] << 16; FALL_THROUGH; case 10: k3 ^= (FT_UInt32)tail[9] << 8; FALL_THROUGH; case 9: k3 ^= (FT_UInt32)tail[8]; k3 *= c3; k3 = ROTL32( k3, 17 ); k3 *= c4; h3 ^= k3; FALL_THROUGH; case 8: k2 ^= (FT_UInt32)tail[7] << 24; FALL_THROUGH; case 7: k2 ^= (FT_UInt32)tail[6] << 16; FALL_THROUGH; case 6: k2 ^= (FT_UInt32)tail[5] << 8; FALL_THROUGH; case 5: k2 ^= (FT_UInt32)tail[4]; k2 *= c2; k2 = ROTL32( k2, 16 ); k2 *= c3; h2 ^= k2; FALL_THROUGH; case 4: k1 ^= (FT_UInt32)tail[3] << 24; FALL_THROUGH; case 3: k1 ^= (FT_UInt32)tail[2] << 16; FALL_THROUGH; case 2: k1 ^= (FT_UInt32)tail[1] << 8; FALL_THROUGH; case 1: k1 ^= (FT_UInt32)tail[0]; k1 *= c1; k1 = ROTL32( k1, 15 ); k1 *= c2; h1 ^= k1; } } h1 ^= len; h2 ^= len; h3 ^= len; h4 ^= len; h1 += h2; h1 += h3; h1 += h4; h2 += h1; h3 += h1; h4 += h1; h1 = fmix32( h1 ); h2 = fmix32( h2 ); h3 = fmix32( h3 ); h4 = fmix32( h4 ); h1 += h2; h1 += h3; h1 += h4; h2 += h1; h3 += h1; h4 += h1; ((FT_UInt32*)out)[0] = h1; ((FT_UInt32*)out)[1] = h2; ((FT_UInt32*)out)[2] = h3; ((FT_UInt32*)out)[3] = h4; } #endif /* TT_CONFIG_OPTION_GX_VAR_SUPPORT */ typedef int (*char_type_func)( int c ); /* Handling of PID/EID 3/0 and 3/1 is the same. */ #define IS_WIN( n ) ( (n)->platformID == 3 && \ ( (n)->encodingID == 1 || (n)->encodingID == 0 ) ) #define IS_APPLE( n ) ( (n)->platformID == 1 && \ (n)->encodingID == 0 ) static char* get_win_string( FT_Memory memory, FT_Stream stream, TT_Name entry, char_type_func char_type, FT_Bool report_invalid_characters ) { FT_Error error; char* result = NULL; FT_String* r; FT_Char* p; FT_UInt len; if ( FT_QALLOC( result, entry->stringLength / 2 + 1 ) ) return NULL; if ( FT_STREAM_SEEK( entry->stringOffset ) || FT_FRAME_ENTER( entry->stringLength ) ) goto get_win_string_error; r = (FT_String*)result; p = (FT_Char*)stream->cursor; for ( len = entry->stringLength / 2; len > 0; len--, p += 2 ) { if ( p[0] == 0 && char_type( p[1] ) ) *r++ = p[1]; else { if ( report_invalid_characters ) FT_TRACE0(( "get_win_string:" " Character 0x%X invalid in PS name string\n", ((unsigned)p[0])*256 + (unsigned)p[1] )); continue; } } *r = '\0'; FT_FRAME_EXIT(); if ( r != result ) return result; get_win_string_error: FT_FREE( result ); entry->stringLength = 0; entry->stringOffset = 0; FT_FREE( entry->string ); return NULL; } static char* get_apple_string( FT_Memory memory, FT_Stream stream, TT_Name entry, char_type_func char_type, FT_Bool report_invalid_characters ) { FT_Error error; char* result = NULL; FT_String* r; FT_Char* p; FT_UInt len; if ( FT_QALLOC( result, entry->stringLength + 1 ) ) return NULL; if ( FT_STREAM_SEEK( entry->stringOffset ) || FT_FRAME_ENTER( entry->stringLength ) ) goto get_apple_string_error; r = (FT_String*)result; p = (FT_Char*)stream->cursor; for ( len = entry->stringLength; len > 0; len--, p++ ) { if ( char_type( *p ) ) *r++ = *p; else { if ( report_invalid_characters ) FT_TRACE0(( "get_apple_string:" " Character `%c' (0x%X) invalid in PS name string\n", *p, *p )); continue; } } *r = '\0'; FT_FRAME_EXIT(); if ( r != result ) return result; get_apple_string_error: FT_FREE( result ); entry->stringOffset = 0; entry->stringLength = 0; FT_FREE( entry->string ); return NULL; } FT_CALLBACK_DEF( FT_Bool ) sfnt_get_name_id( TT_Face face, FT_UShort id, FT_Int *win, FT_Int *apple ) { FT_Int n; *win = -1; *apple = -1; for ( n = 0; n < face->num_names; n++ ) { TT_Name name = face->name_table.names + n; if ( name->nameID == id && name->stringLength > 0 ) { if ( IS_WIN( name ) && ( name->languageID == 0x409 || *win == -1 ) ) *win = n; if ( IS_APPLE( name ) && ( name->languageID == 0 || *apple == -1 ) ) *apple = n; } } return ( *win >= 0 ) || ( *apple >= 0 ); } #ifdef TT_CONFIG_OPTION_GX_VAR_SUPPORT /* The maximum length of an axis value descriptor. We need 65536 different values for the decimal fraction; this fits nicely into five decimal places. Consequently, it consists of . the minus sign if the number is negative, . up to five characters for the digits before the decimal point, . the decimal point if there is a fractional part, and . up to five characters for the digits after the decimal point. We also need one byte for the leading `_' character and up to four bytes for the axis tag. */ #define MAX_VALUE_DESCRIPTOR_LEN ( 1 + 5 + 1 + 5 + 1 + 4 ) /* the maximum length of PostScript font names */ #define MAX_PS_NAME_LEN 127 /* * Find the shortest decimal representation of a 16.16 fixed-point * number. The function fills `buf' with the result, returning a pointer * to the position after the representation's last byte. */ static char* fixed2float( FT_Int fixed, char* buf ) { char* p; char* q; char tmp[5]; FT_Int int_part; FT_Int frac_part; FT_Int i; p = buf; if ( fixed == 0 ) { *p++ = '0'; return p; } if ( fixed < 0 ) { *p++ = '-'; fixed = NEG_INT( fixed ); } int_part = ( fixed >> 16 ) & 0xFFFF; frac_part = fixed & 0xFFFF; /* get digits of integer part (in reverse order) */ q = tmp; while ( int_part > 0 ) { *q++ = '0' + int_part % 10; int_part /= 10; } /* copy digits in correct order to buffer */ while ( q > tmp ) *p++ = *--q; if ( !frac_part ) return p; /* save position of point */ q = p; *p++ = '.'; /* apply rounding */ frac_part = frac_part * 10 + 5; /* get digits of fractional part */ for ( i = 0; i < 5; i++ ) { *p++ = '0' + (char)( frac_part / 0x10000L ); frac_part %= 0x10000L; if ( !frac_part ) break; frac_part *= 10; } /* If the remainder stored in `frac_part' (after the last FOR loop) is smaller than 34480*10, the resulting decimal value minus 0.00001 is an equivalent representation of `fixed'. The above FOR loop always finds the larger of the two values; I verified this by iterating over all possible fixed-point numbers. If the remainder is 17232*10, both values are equally good, and we take the next even number (following IEEE 754's `round to nearest, ties to even' rounding rule). If the remainder is smaller than 17232*10, the lower of the two numbers is nearer to the exact result (values 17232 and 34480 were also found by testing all possible fixed-point values). We use this to find a shorter decimal representation. If not ending with digit zero, we take the representation with less error. */ p--; if ( p - q == 5 ) /* five digits? */ { /* take the representation that has zero as the last digit */ if ( frac_part < 34480 * 10 && *p == '1' ) *p = '0'; /* otherwise use the one with less error */ else if ( frac_part == 17232 * 10 && *p & 1 ) *p -= 1; else if ( frac_part < 17232 * 10 && *p != '0' ) *p -= 1; } /* remove trailing zeros */ while ( *p == '0' ) *p-- = '\0'; return p + 1; } static const char hexdigits[16] = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F' }; static const char* sfnt_get_var_ps_name( TT_Face face ) { FT_Error error; FT_Memory memory = face->root.memory; FT_Service_MultiMasters mm = (FT_Service_MultiMasters)face->mm; FT_UInt num_coords; FT_Fixed* coords; FT_MM_Var* mm_var; FT_Int found, win, apple; FT_UInt i, j; char* result = NULL; char* p; if ( !face->var_postscript_prefix ) { FT_UInt len; /* check whether we have a Variations PostScript Name Prefix */ found = sfnt_get_name_id( face, TT_NAME_ID_VARIATIONS_PREFIX, &win, &apple ); if ( !found ) { /* otherwise use the typographic family name */ found = sfnt_get_name_id( face, TT_NAME_ID_TYPOGRAPHIC_FAMILY, &win, &apple ); } if ( !found ) { /* according to the 'name' documentation in the OpenType */ /* specification the font family name is to be used if the */ /* typographic family name is missing, so let's do that */ found = sfnt_get_name_id( face, TT_NAME_ID_FONT_FAMILY, &win, &apple ); } if ( !found ) { FT_TRACE0(( "sfnt_get_var_ps_name:" " Can't construct PS name prefix for font instances\n" )); return NULL; } /* prefer Windows entries over Apple */ if ( win != -1 ) result = get_win_string( face->root.memory, face->name_table.stream, face->name_table.names + win, sfnt_is_alphanumeric, 0 ); if ( !result && apple != -1 ) result = get_apple_string( face->root.memory, face->name_table.stream, face->name_table.names + apple, sfnt_is_alphanumeric, 0 ); if ( !result ) { FT_TRACE0(( "sfnt_get_var_ps_name:" " No valid PS name prefix for font instances found\n" )); /* XXX It probably makes sense to never let this fail */ /* since an arbitrary prefix should work, too. */ /* On the other hand, it is very unlikely that */ /* we ever reach this code at all. */ return NULL; } len = ft_strlen( result ); /* sanitize if necessary; we reserve space for 36 bytes (a 128bit */ /* checksum as a hex number, preceded by `-' and followed by three */ /* ASCII dots, to be used if the constructed PS name would be too */ /* long); this is also sufficient for a single instance */ if ( len > MAX_PS_NAME_LEN - ( 1 + 32 + 3 ) ) { len = MAX_PS_NAME_LEN - ( 1 + 32 + 3 ); result[len] = '\0'; FT_TRACE0(( "sfnt_get_var_ps_name:" " Shortening variation PS name prefix\n" )); FT_TRACE0(( " " " to %d characters\n", len )); } face->var_postscript_prefix = result; face->var_postscript_prefix_len = len; } mm->get_var_blend( FT_FACE( face ), &num_coords, &coords, NULL, &mm_var ); if ( FT_IS_NAMED_INSTANCE( FT_FACE( face ) ) && !FT_IS_VARIATION( FT_FACE( face ) ) ) { SFNT_Service sfnt = (SFNT_Service)face->sfnt; FT_Long instance = ( ( face->root.face_index & 0x7FFF0000L ) >> 16 ) - 1; FT_UInt psid = mm_var->namedstyle[instance].psid; char* ps_name = NULL; /* try first to load the name string with index `postScriptNameID' */ if ( psid == 6 || ( psid > 255 && psid < 32768 ) ) (void)sfnt->get_name( face, (FT_UShort)psid, &ps_name ); if ( ps_name ) { result = ps_name; p = result + ft_strlen( result ) + 1; goto check_length; } else { /* otherwise construct a name using `subfamilyNameID' */ FT_UInt strid = mm_var->namedstyle[instance].strid; char* subfamily_name; char* s; (void)sfnt->get_name( face, (FT_UShort)strid, &subfamily_name ); if ( !subfamily_name ) { FT_TRACE1(( "sfnt_get_var_ps_name:" " can't construct named instance PS name;\n" )); FT_TRACE1(( " " " trying to construct normal instance PS name\n" )); goto construct_instance_name; } /* after the prefix we have character `-' followed by the */ /* subfamily name (using only characters a-z, A-Z, and 0-9) */ if ( FT_QALLOC( result, face->var_postscript_prefix_len + 1 + ft_strlen( subfamily_name ) + 1 ) ) return NULL; ft_strcpy( result, face->var_postscript_prefix ); p = result + face->var_postscript_prefix_len; *p++ = '-'; s = subfamily_name; while ( *s ) { if ( ft_isalnum( *s ) ) *p++ = *s; s++; } *p++ = '\0'; FT_FREE( subfamily_name ); } } else { FT_Var_Axis* axis; construct_instance_name: axis = mm_var->axis; if ( FT_QALLOC( result, face->var_postscript_prefix_len + num_coords * MAX_VALUE_DESCRIPTOR_LEN + 1 ) ) return NULL; p = result; ft_strcpy( p, face->var_postscript_prefix ); p += face->var_postscript_prefix_len; for ( i = 0; i < num_coords; i++, coords++, axis++ ) { char t; /* omit axis value descriptor if it is identical */ /* to the default axis value */ if ( *coords == axis->def ) continue; *p++ = '_'; p = fixed2float( *coords, p ); t = (char)( axis->tag >> 24 ); if ( t != ' ' && ft_isalnum( t ) ) *p++ = t; t = (char)( axis->tag >> 16 ); if ( t != ' ' && ft_isalnum( t ) ) *p++ = t; t = (char)( axis->tag >> 8 ); if ( t != ' ' && ft_isalnum( t ) ) *p++ = t; t = (char)axis->tag; if ( t != ' ' && ft_isalnum( t ) ) *p++ = t; } *p++ = '\0'; } check_length: if ( p - result > MAX_PS_NAME_LEN ) { /* the PS name is too long; replace the part after the prefix with */ /* a checksum; we use MurmurHash 3 with a hash length of 128 bit */ FT_UInt32 seed = 123456789; FT_UInt32 hash[4]; FT_UInt32* h; murmur_hash_3_128( result, p - result, seed, hash ); p = result + face->var_postscript_prefix_len; *p++ = '-'; /* we convert the hash value to hex digits from back to front */ p += 32 + 3; h = hash + 3; *p-- = '\0'; *p-- = '.'; *p-- = '.'; *p-- = '.'; for ( i = 0; i < 4; i++, h-- ) { FT_UInt32 v = *h; for ( j = 0; j < 8; j++ ) { *p-- = hexdigits[v & 0xF]; v >>= 4; } } } return result; } #endif /* TT_CONFIG_OPTION_GX_VAR_SUPPORT */ FT_CALLBACK_DEF( const char* ) sfnt_get_ps_name( FT_Face face ) /* TT_Face */ { TT_Face ttface = (TT_Face)face; FT_Int found, win, apple; const char* result = NULL; if ( ttface->postscript_name ) return ttface->postscript_name; #ifdef TT_CONFIG_OPTION_GX_VAR_SUPPORT if ( ttface->blend && ( FT_IS_NAMED_INSTANCE( face ) || FT_IS_VARIATION( face ) ) ) { ttface->postscript_name = sfnt_get_var_ps_name( ttface ); return ttface->postscript_name; } #endif /* scan the name table to see whether we have a Postscript name here, */ /* either in Macintosh or Windows platform encodings */ found = sfnt_get_name_id( ttface, TT_NAME_ID_PS_NAME, &win, &apple ); if ( !found ) return NULL; /* prefer Windows entries over Apple */ if ( win != -1 ) result = get_win_string( FT_FACE_MEMORY( face ), ttface->name_table.stream, ttface->name_table.names + win, sfnt_is_postscript, 1 ); if ( !result && apple != -1 ) result = get_apple_string( FT_FACE_MEMORY( face ), ttface->name_table.stream, ttface->name_table.names + apple, sfnt_is_postscript, 1 ); ttface->postscript_name = result; return result; } FT_DEFINE_SERVICE_PSFONTNAMEREC( sfnt_service_ps_name, sfnt_get_ps_name /* FT_PsName_GetFunc get_ps_font_name */ ) /* * TT CMAP INFO */ FT_DEFINE_SERVICE_TTCMAPSREC( tt_service_get_cmap_info, tt_get_cmap_info /* TT_CMap_Info_GetFunc get_cmap_info */ ) #ifdef TT_CONFIG_OPTION_BDF static FT_Error sfnt_get_charset_id( FT_Face face, const char* *acharset_encoding, const char* *acharset_registry ) { BDF_PropertyRec encoding, registry; FT_Error error; /* XXX: I don't know whether this is correct, since * tt_face_find_bdf_prop only returns something correct if we have * previously selected a size that is listed in the BDF table. * Should we change the BDF table format to include single offsets * for `CHARSET_REGISTRY' and `CHARSET_ENCODING'? */ error = tt_face_find_bdf_prop( face, "CHARSET_REGISTRY", ®istry ); if ( !error ) { error = tt_face_find_bdf_prop( face, "CHARSET_ENCODING", &encoding ); if ( !error ) { if ( registry.type == BDF_PROPERTY_TYPE_ATOM && encoding.type == BDF_PROPERTY_TYPE_ATOM ) { *acharset_encoding = encoding.u.atom; *acharset_registry = registry.u.atom; } else error = FT_THROW( Invalid_Argument ); } } return error; } FT_DEFINE_SERVICE_BDFRec( sfnt_service_bdf, sfnt_get_charset_id, /* FT_BDF_GetCharsetIdFunc get_charset_id */ tt_face_find_bdf_prop /* FT_BDF_GetPropertyFunc get_property */ ) #endif /* TT_CONFIG_OPTION_BDF */ /* * SERVICE LIST */ #if defined TT_CONFIG_OPTION_POSTSCRIPT_NAMES && defined TT_CONFIG_OPTION_BDF FT_DEFINE_SERVICEDESCREC5( sfnt_services, FT_SERVICE_ID_SFNT_TABLE, &sfnt_service_sfnt_table, FT_SERVICE_ID_POSTSCRIPT_FONT_NAME, &sfnt_service_ps_name, FT_SERVICE_ID_GLYPH_DICT, &sfnt_service_glyph_dict, FT_SERVICE_ID_BDF, &sfnt_service_bdf, FT_SERVICE_ID_TT_CMAP, &tt_service_get_cmap_info ) #elif defined TT_CONFIG_OPTION_POSTSCRIPT_NAMES FT_DEFINE_SERVICEDESCREC4( sfnt_services, FT_SERVICE_ID_SFNT_TABLE, &sfnt_service_sfnt_table, FT_SERVICE_ID_POSTSCRIPT_FONT_NAME, &sfnt_service_ps_name, FT_SERVICE_ID_GLYPH_DICT, &sfnt_service_glyph_dict, FT_SERVICE_ID_TT_CMAP, &tt_service_get_cmap_info ) #elif defined TT_CONFIG_OPTION_BDF FT_DEFINE_SERVICEDESCREC4( sfnt_services, FT_SERVICE_ID_SFNT_TABLE, &sfnt_service_sfnt_table, FT_SERVICE_ID_POSTSCRIPT_FONT_NAME, &sfnt_service_ps_name, FT_SERVICE_ID_BDF, &sfnt_service_bdf, FT_SERVICE_ID_TT_CMAP, &tt_service_get_cmap_info ) #else FT_DEFINE_SERVICEDESCREC3( sfnt_services, FT_SERVICE_ID_SFNT_TABLE, &sfnt_service_sfnt_table, FT_SERVICE_ID_POSTSCRIPT_FONT_NAME, &sfnt_service_ps_name, FT_SERVICE_ID_TT_CMAP, &tt_service_get_cmap_info ) #endif FT_CALLBACK_DEF( FT_Module_Interface ) sfnt_get_interface( FT_Module module, const char* module_interface ) { FT_UNUSED( module ); return ft_service_list_lookup( sfnt_services, module_interface ); } #ifdef TT_CONFIG_OPTION_EMBEDDED_BITMAPS #define PUT_EMBEDDED_BITMAPS( a ) a #else #define PUT_EMBEDDED_BITMAPS( a ) NULL #endif #ifdef TT_CONFIG_OPTION_COLOR_LAYERS #define PUT_COLOR_LAYERS( a ) a #else #define PUT_COLOR_LAYERS( a ) NULL #endif #ifdef FT_CONFIG_OPTION_SVG #define PUT_SVG_SUPPORT( a ) a #else #define PUT_SVG_SUPPORT( a ) NULL #endif #define PUT_COLOR_LAYERS_V1( a ) PUT_COLOR_LAYERS( a ) #ifdef TT_CONFIG_OPTION_POSTSCRIPT_NAMES #define PUT_PS_NAMES( a ) a #else #define PUT_PS_NAMES( a ) NULL #endif FT_DEFINE_SFNT_INTERFACE( sfnt_interface, tt_face_goto_table, /* TT_Loader_GotoTableFunc goto_table */ sfnt_init_face, /* TT_Init_Face_Func init_face */ sfnt_load_face, /* TT_Load_Face_Func load_face */ sfnt_done_face, /* TT_Done_Face_Func done_face */ sfnt_get_interface, /* FT_Module_Requester get_interface */ tt_face_load_any, /* TT_Load_Any_Func load_any */ tt_face_load_head, /* TT_Load_Table_Func load_head */ tt_face_load_hhea, /* TT_Load_Metrics_Func load_hhea */ tt_face_load_cmap, /* TT_Load_Table_Func load_cmap */ tt_face_load_maxp, /* TT_Load_Table_Func load_maxp */ tt_face_load_os2, /* TT_Load_Table_Func load_os2 */ tt_face_load_post, /* TT_Load_Table_Func load_post */ tt_face_load_name, /* TT_Load_Table_Func load_name */ tt_face_free_name, /* TT_Free_Table_Func free_name */ tt_face_load_kern, /* TT_Load_Table_Func load_kern */ tt_face_load_gasp, /* TT_Load_Table_Func load_gasp */ tt_face_load_pclt, /* TT_Load_Table_Func load_init */ /* see `ttload.h' */ PUT_EMBEDDED_BITMAPS( tt_face_load_bhed ), /* TT_Load_Table_Func load_bhed */ PUT_EMBEDDED_BITMAPS( tt_face_load_sbit_image ), /* TT_Load_SBit_Image_Func load_sbit_image */ /* see `ttpost.h' */ PUT_PS_NAMES( tt_face_get_ps_name ), /* TT_Get_PS_Name_Func get_psname */ PUT_PS_NAMES( tt_face_free_ps_names ), /* TT_Free_Table_Func free_psnames */ /* since version 2.1.8 */ tt_face_get_kerning, /* TT_Face_GetKerningFunc get_kerning */ /* since version 2.2 */ tt_face_load_font_dir, /* TT_Load_Table_Func load_font_dir */ tt_face_load_hmtx, /* TT_Load_Metrics_Func load_hmtx */ /* see `ttsbit.h' and `sfnt.h' */ PUT_EMBEDDED_BITMAPS( tt_face_load_sbit ), /* TT_Load_Table_Func load_eblc */ PUT_EMBEDDED_BITMAPS( tt_face_free_sbit ), /* TT_Free_Table_Func free_eblc */ PUT_EMBEDDED_BITMAPS( tt_face_set_sbit_strike ), /* TT_Set_SBit_Strike_Func set_sbit_strike */ PUT_EMBEDDED_BITMAPS( tt_face_load_strike_metrics ), /* TT_Load_Strike_Metrics_Func load_strike_metrics */ PUT_COLOR_LAYERS( tt_face_load_cpal ), /* TT_Load_Table_Func load_cpal */ PUT_COLOR_LAYERS( tt_face_load_colr ), /* TT_Load_Table_Func load_colr */ PUT_COLOR_LAYERS( tt_face_free_cpal ), /* TT_Free_Table_Func free_cpal */ PUT_COLOR_LAYERS( tt_face_free_colr ), /* TT_Free_Table_Func free_colr */ PUT_COLOR_LAYERS( tt_face_palette_set ), /* TT_Set_Palette_Func set_palette */ PUT_COLOR_LAYERS( tt_face_get_colr_layer ), /* TT_Get_Colr_Layer_Func get_colr_layer */ PUT_COLOR_LAYERS_V1( tt_face_get_colr_glyph_paint ), /* TT_Get_Color_Glyph_Paint_Func get_colr_glyph_paint */ PUT_COLOR_LAYERS_V1( tt_face_get_color_glyph_clipbox ), /* TT_Get_Color_Glyph_ClipBox_Func get_clipbox */ PUT_COLOR_LAYERS_V1( tt_face_get_paint_layers ), /* TT_Get_Paint_Layers_Func get_paint_layers */ PUT_COLOR_LAYERS_V1( tt_face_get_colorline_stops ), /* TT_Get_Paint get_paint */ PUT_COLOR_LAYERS_V1( tt_face_get_paint ), /* TT_Get_Colorline_Stops_Func get_colorline_stops */ PUT_COLOR_LAYERS( tt_face_colr_blend_layer ), /* TT_Blend_Colr_Func colr_blend */ tt_face_get_metrics, /* TT_Get_Metrics_Func get_metrics */ tt_face_get_name, /* TT_Get_Name_Func get_name */ sfnt_get_name_id, /* TT_Get_Name_ID_Func get_name_id */ PUT_SVG_SUPPORT( tt_face_load_svg ), /* TT_Load_Table_Func load_svg */ PUT_SVG_SUPPORT( tt_face_free_svg ), /* TT_Free_Table_Func free_svg */ PUT_SVG_SUPPORT( tt_face_load_svg_doc ) /* TT_Load_Svg_Doc_Func load_svg_doc */ ) FT_DEFINE_MODULE( sfnt_module_class, 0, /* not a font driver or renderer */ sizeof ( FT_ModuleRec ), "sfnt", /* driver name */ 0x10000L, /* driver version 1.0 */ 0x20000L, /* driver requires FreeType 2.0 or higher */ (const void*)&sfnt_interface, /* module specific interface */ NULL, /* FT_Module_Constructor module_init */ NULL, /* FT_Module_Destructor module_done */ sfnt_get_interface /* FT_Module_Requester get_interface */ ) /* END */