/***************************************************************************/ | |
/* */ | |
/* sfdriver.c */ | |
/* */ | |
/* High-level SFNT driver interface (body). */ | |
/* */ | |
/* Copyright 1996-2015 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 <ft2build.h> | |
#include FT_INTERNAL_DEBUG_H | |
#include FT_INTERNAL_SFNT_H | |
#include FT_INTERNAL_OBJECTS_H | |
#include "sfdriver.h" | |
#include "ttload.h" | |
#include "sfobjs.h" | |
#include "sfntpic.h" | |
#include "sferrors.h" | |
#ifdef TT_CONFIG_OPTION_EMBEDDED_BITMAPS | |
#include "ttsbit.h" | |
#endif | |
#ifdef TT_CONFIG_OPTION_POSTSCRIPT_NAMES | |
#include "ttpost.h" | |
#endif | |
#ifdef TT_CONFIG_OPTION_BDF | |
#include "ttbdf.h" | |
#include FT_SERVICE_BDF_H | |
#endif | |
#include "ttcmap.h" | |
#include "ttkern.h" | |
#include "ttmtx.h" | |
#include FT_SERVICE_GLYPH_DICT_H | |
#include FT_SERVICE_POSTSCRIPT_NAME_H | |
#include FT_SERVICE_SFNT_H | |
#include FT_SERVICE_TT_CMAP_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_sfdriver | |
/* | |
* SFNT TABLE SERVICE | |
* | |
*/ | |
static void* | |
get_sfnt_table( TT_Face face, | |
FT_Sfnt_Tag tag ) | |
{ | |
void* table; | |
switch ( tag ) | |
{ | |
case FT_SFNT_HEAD: | |
table = &face->header; | |
break; | |
case FT_SFNT_HHEA: | |
table = &face->horizontal; | |
break; | |
case FT_SFNT_VHEA: | |
table = face->vertical_info ? &face->vertical : NULL; | |
break; | |
case FT_SFNT_OS2: | |
table = face->os2.version == 0xFFFFU ? NULL : &face->os2; | |
break; | |
case FT_SFNT_POST: | |
table = &face->postscript; | |
break; | |
case FT_SFNT_MAXP: | |
table = &face->max_profile; | |
break; | |
case FT_SFNT_PCLT: | |
table = face->pclt.Version ? &face->pclt : NULL; | |
break; | |
default: | |
table = NULL; | |
} | |
return table; | |
} | |
static FT_Error | |
sfnt_table_info( TT_Face face, | |
FT_UInt idx, | |
FT_ULong *tag, | |
FT_ULong *offset, | |
FT_ULong *length ) | |
{ | |
if ( !offset || !length ) | |
return FT_THROW( Invalid_Argument ); | |
if ( !tag ) | |
*length = face->num_tables; | |
else | |
{ | |
if ( idx >= face->num_tables ) | |
return FT_THROW( Table_Missing ); | |
*tag = face->dir_tables[idx].Tag; | |
*offset = face->dir_tables[idx].Offset; | |
*length = face->dir_tables[idx].Length; | |
} | |
return FT_Err_Ok; | |
} | |
FT_DEFINE_SERVICE_SFNT_TABLEREC( | |
sfnt_service_sfnt_table, | |
(FT_SFNT_TableLoadFunc)tt_face_load_any, /* load_table */ | |
(FT_SFNT_TableGetFunc) get_sfnt_table, /* get_table */ | |
(FT_SFNT_TableInfoFunc)sfnt_table_info ) /* table_info */ | |
#ifdef TT_CONFIG_OPTION_POSTSCRIPT_NAMES | |
/* | |
* GLYPH DICT SERVICE | |
* | |
*/ | |
static FT_Error | |
sfnt_get_glyph_name( TT_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( face, glyph_index, &gname ); | |
if ( !error ) | |
FT_STRCPYN( buffer, gname, buffer_max ); | |
return error; | |
} | |
static FT_UInt | |
sfnt_get_name_index( TT_Face face, | |
FT_String* glyph_name ) | |
{ | |
FT_Face root = &face->root; | |
FT_UInt i, max_gid = FT_UINT_MAX; | |
if ( root->num_glyphs < 0 ) | |
return 0; | |
else if ( (FT_ULong)root->num_glyphs < FT_UINT_MAX ) | |
max_gid = (FT_UInt)root->num_glyphs; | |
else | |
FT_TRACE0(( "Ignore glyph names for invalid GID 0x%08x - 0x%08x\n", | |
FT_UINT_MAX, root->num_glyphs )); | |
for ( i = 0; i < max_gid; i++ ) | |
{ | |
FT_String* gname; | |
FT_Error error = tt_face_get_ps_name( face, i, &gname ); | |
if ( error ) | |
continue; | |
if ( !ft_strcmp( glyph_name, gname ) ) | |
return i; | |
} | |
return 0; | |
} | |
FT_DEFINE_SERVICE_GLYPHDICTREC( | |
sfnt_service_glyph_dict, | |
(FT_GlyphDict_GetNameFunc) sfnt_get_glyph_name, /* get_name */ | |
(FT_GlyphDict_NameIndexFunc)sfnt_get_name_index ) /* name_index */ | |
#endif /* TT_CONFIG_OPTION_POSTSCRIPT_NAMES */ | |
/* | |
* POSTSCRIPT NAME SERVICE | |
* | |
*/ | |
static const char* | |
sfnt_get_ps_name( TT_Face face ) | |
{ | |
FT_Int n, found_win, found_apple; | |
const char* result = NULL; | |
/* shouldn't happen, but just in case to avoid memory leaks */ | |
if ( face->postscript_name ) | |
return face->postscript_name; | |
/* scan the name table to see whether we have a Postscript name here, */ | |
/* either in Macintosh or Windows platform encodings */ | |
found_win = -1; | |
found_apple = -1; | |
for ( n = 0; n < face->num_names; n++ ) | |
{ | |
TT_NameEntryRec* name = face->name_table.names + n; | |
if ( name->nameID == 6 && name->stringLength > 0 ) | |
{ | |
if ( name->platformID == 3 && | |
name->encodingID == 1 && | |
name->languageID == 0x409 ) | |
found_win = n; | |
if ( name->platformID == 1 && | |
name->encodingID == 0 && | |
name->languageID == 0 ) | |
found_apple = n; | |
} | |
} | |
if ( found_win != -1 ) | |
{ | |
FT_Memory memory = face->root.memory; | |
TT_NameEntryRec* name = face->name_table.names + found_win; | |
FT_UInt len = name->stringLength / 2; | |
FT_Error error = FT_Err_Ok; | |
FT_UNUSED( error ); | |
if ( !FT_ALLOC( result, name->stringLength + 1 ) ) | |
{ | |
FT_Stream stream = face->name_table.stream; | |
FT_String* r = (FT_String*)result; | |
FT_Char* p; | |
if ( FT_STREAM_SEEK( name->stringOffset ) || | |
FT_FRAME_ENTER( name->stringLength ) ) | |
{ | |
FT_FREE( result ); | |
name->stringLength = 0; | |
name->stringOffset = 0; | |
FT_FREE( name->string ); | |
goto Exit; | |
} | |
p = (FT_Char*)stream->cursor; | |
for ( ; len > 0; len--, p += 2 ) | |
{ | |
if ( p[0] == 0 && p[1] >= 32 ) | |
*r++ = p[1]; | |
} | |
*r = '\0'; | |
FT_FRAME_EXIT(); | |
} | |
goto Exit; | |
} | |
if ( found_apple != -1 ) | |
{ | |
FT_Memory memory = face->root.memory; | |
TT_NameEntryRec* name = face->name_table.names + found_apple; | |
FT_UInt len = name->stringLength; | |
FT_Error error = FT_Err_Ok; | |
FT_UNUSED( error ); | |
if ( !FT_ALLOC( result, len + 1 ) ) | |
{ | |
FT_Stream stream = face->name_table.stream; | |
if ( FT_STREAM_SEEK( name->stringOffset ) || | |
FT_STREAM_READ( result, len ) ) | |
{ | |
name->stringOffset = 0; | |
name->stringLength = 0; | |
FT_FREE( name->string ); | |
FT_FREE( result ); | |
goto Exit; | |
} | |
((char*)result)[len] = '\0'; | |
} | |
} | |
Exit: | |
face->postscript_name = result; | |
return result; | |
} | |
FT_DEFINE_SERVICE_PSFONTNAMEREC( | |
sfnt_service_ps_name, | |
(FT_PsName_GetFunc)sfnt_get_ps_name ) /* get_ps_font_name */ | |
/* | |
* TT CMAP INFO | |
*/ | |
FT_DEFINE_SERVICE_TTCMAPSREC( | |
tt_service_get_cmap_info, | |
(TT_CMap_Info_GetFunc)tt_get_cmap_info ) /* get_cmap_info */ | |
#ifdef TT_CONFIG_OPTION_BDF | |
static FT_Error | |
sfnt_get_charset_id( TT_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, | |
(FT_BDF_GetCharsetIdFunc)sfnt_get_charset_id, /* get_charset_id */ | |
(FT_BDF_GetPropertyFunc) tt_face_find_bdf_prop ) /* 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_GET, | |
FT_SERVICE_ID_POSTSCRIPT_FONT_NAME, &SFNT_SERVICE_PS_NAME_GET, | |
FT_SERVICE_ID_GLYPH_DICT, &SFNT_SERVICE_GLYPH_DICT_GET, | |
FT_SERVICE_ID_BDF, &SFNT_SERVICE_BDF_GET, | |
FT_SERVICE_ID_TT_CMAP, &TT_SERVICE_CMAP_INFO_GET ) | |
#elif defined TT_CONFIG_OPTION_POSTSCRIPT_NAMES | |
FT_DEFINE_SERVICEDESCREC4( | |
sfnt_services, | |
FT_SERVICE_ID_SFNT_TABLE, &SFNT_SERVICE_SFNT_TABLE_GET, | |
FT_SERVICE_ID_POSTSCRIPT_FONT_NAME, &SFNT_SERVICE_PS_NAME_GET, | |
FT_SERVICE_ID_GLYPH_DICT, &SFNT_SERVICE_GLYPH_DICT_GET, | |
FT_SERVICE_ID_TT_CMAP, &TT_SERVICE_CMAP_INFO_GET ) | |
#elif defined TT_CONFIG_OPTION_BDF | |
FT_DEFINE_SERVICEDESCREC4( | |
sfnt_services, | |
FT_SERVICE_ID_SFNT_TABLE, &SFNT_SERVICE_SFNT_TABLE_GET, | |
FT_SERVICE_ID_POSTSCRIPT_FONT_NAME, &SFNT_SERVICE_PS_NAME_GET, | |
FT_SERVICE_ID_BDF, &SFNT_SERVICE_BDF_GET, | |
FT_SERVICE_ID_TT_CMAP, &TT_SERVICE_CMAP_INFO_GET ) | |
#else | |
FT_DEFINE_SERVICEDESCREC3( | |
sfnt_services, | |
FT_SERVICE_ID_SFNT_TABLE, &SFNT_SERVICE_SFNT_TABLE_GET, | |
FT_SERVICE_ID_POSTSCRIPT_FONT_NAME, &SFNT_SERVICE_PS_NAME_GET, | |
FT_SERVICE_ID_TT_CMAP, &TT_SERVICE_CMAP_INFO_GET ) | |
#endif | |
FT_CALLBACK_DEF( FT_Module_Interface ) | |
sfnt_get_interface( FT_Module module, | |
const char* module_interface ) | |
{ | |
/* SFNT_SERVICES_GET dereferences `library' in PIC mode */ | |
#ifdef FT_CONFIG_OPTION_PIC | |
FT_Library library; | |
if ( !module ) | |
return NULL; | |
library = module->library; | |
if ( !library ) | |
return NULL; | |
#else | |
FT_UNUSED( module ); | |
#endif | |
return ft_service_list_lookup( SFNT_SERVICES_GET, 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_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, | |
sfnt_init_face, | |
sfnt_load_face, | |
sfnt_done_face, | |
sfnt_get_interface, | |
tt_face_load_any, | |
tt_face_load_head, | |
tt_face_load_hhea, | |
tt_face_load_cmap, | |
tt_face_load_maxp, | |
tt_face_load_os2, | |
tt_face_load_post, | |
tt_face_load_name, | |
tt_face_free_name, | |
tt_face_load_kern, | |
tt_face_load_gasp, | |
tt_face_load_pclt, | |
/* see `ttload.h' */ | |
PUT_EMBEDDED_BITMAPS( tt_face_load_bhed ), | |
PUT_EMBEDDED_BITMAPS( tt_face_load_sbit_image ), | |
/* see `ttpost.h' */ | |
PUT_PS_NAMES( tt_face_get_ps_name ), | |
PUT_PS_NAMES( tt_face_free_ps_names ), | |
/* since version 2.1.8 */ | |
tt_face_get_kerning, | |
/* since version 2.2 */ | |
tt_face_load_font_dir, | |
tt_face_load_hmtx, | |
/* see `ttsbit.h' and `sfnt.h' */ | |
PUT_EMBEDDED_BITMAPS( tt_face_load_sbit ), | |
PUT_EMBEDDED_BITMAPS( tt_face_free_sbit ), | |
PUT_EMBEDDED_BITMAPS( tt_face_set_sbit_strike ), | |
PUT_EMBEDDED_BITMAPS( tt_face_load_strike_metrics ), | |
tt_face_get_metrics, | |
tt_face_get_name | |
) | |
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_GET, /* module specific interface */ | |
(FT_Module_Constructor)0, | |
(FT_Module_Destructor) 0, | |
(FT_Module_Requester) sfnt_get_interface ) | |
/* END */ |