/**************************************************************************** * * 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 <freetype/internal/ftdebug.h> #include <freetype/internal/sfnt.h> #include <freetype/internal/ftobjs.h> #include <freetype/ttnameid.h> #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 <freetype/internal/services/svbdf.h> #endif #include "ttcmap.h" #include "ttkern.h" #include "ttmtx.h" #include <freetype/internal/services/svgldict.h> #include <freetype/internal/services/svpostnm.h> #include <freetype/internal/services/svsfnt.h> #include <freetype/internal/services/svttcmap.h> #ifdef TT_CONFIG_OPTION_GX_VAR_SUPPORT #include <freetype/ftmm.h> #include <freetype/internal/services/svmm.h> #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 … /* * 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 ) { … } FT_CALLBACK_DEF( void* ) get_sfnt_table( FT_Face face, /* TT_Face */ FT_Sfnt_Tag tag ) { … } 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 ) { … } 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_CALLBACK_DEF( FT_UInt ) sfnt_get_name_index( FT_Face face, const FT_String* glyph_name ) { … } 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] = …; static int sfnt_is_postscript( int c ) { … } #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 ) { … } /* the implementation of MurmurHash3 is taken and adapted from */ /* https://github.com/aappleby/smhasher/blob/master/src/MurmurHash3.cpp */ #define ROTL32( x, r ) … static FT_UInt32 fmix32( FT_UInt32 h ) { … } static void murmur_hash_3_128( const void* key, const unsigned int len, FT_UInt32 seed, void* out ) { … } #endif /* TT_CONFIG_OPTION_GX_VAR_SUPPORT */ char_type_func; /* Handling of PID/EID 3/0 and 3/1 is the same. */ #define IS_WIN( n ) … #define IS_APPLE( n ) … static char* get_win_string( FT_Memory memory, FT_Stream stream, TT_Name entry, char_type_func char_type, FT_Bool report_invalid_characters ) { … } 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_CALLBACK_DEF( FT_Bool ) sfnt_get_name_id( TT_Face face, FT_UShort id, FT_Int *win, FT_Int *apple ) { … } #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 … /* the maximum length of PostScript font names */ #define MAX_PS_NAME_LEN … /* * 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 ) { … } static const char hexdigits[16] = …; static const char* sfnt_get_var_ps_name( TT_Face face ) { … } #endif /* TT_CONFIG_OPTION_GX_VAR_SUPPORT */ FT_CALLBACK_DEF( const char* ) sfnt_get_ps_name( FT_Face face ) /* TT_Face */ { … } 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 ) { … } 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 ) { … } #ifdef TT_CONFIG_OPTION_EMBEDDED_BITMAPS #define PUT_EMBEDDED_BITMAPS( a ) … #else #define PUT_EMBEDDED_BITMAPS … #endif #ifdef TT_CONFIG_OPTION_COLOR_LAYERS #define PUT_COLOR_LAYERS( a ) … #else #define PUT_COLOR_LAYERS … #endif #ifdef FT_CONFIG_OPTION_SVG #define PUT_SVG_SUPPORT( a ) … #else #define PUT_SVG_SUPPORT … #endif #define PUT_COLOR_LAYERS_V1( a ) … #ifdef TT_CONFIG_OPTION_POSTSCRIPT_NAMES #define PUT_PS_NAMES( a ) … #else #define PUT_PS_NAMES … #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 */
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