ref: a929ba9b205c9756f1c0d3c261185e3bacf7fdad
dir: /src/cff/t2objs.c/
/***************************************************************************/ /* */ /* t2objs.c */ /* */ /* OpenType objects manager (body). */ /* */ /* Copyright 1996-2000 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/ftcalc.h> #include <freetype/internal/ftstream.h> #include <freetype/ttnameid.h> #include <freetype/tttags.h> #include <freetype/internal/sfnt.h> #include <freetype/internal/psnames.h> #include <t2objs.h> #include <t2load.h> #include <freetype/internal/t2errors.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_t2objs /*************************************************************************/ /* */ /* FACE FUNCTIONS */ /* */ /*************************************************************************/ /*************************************************************************/ /* */ /* <Function> */ /* T2_Init_Face */ /* */ /* <Description> */ /* Initializes a given OpenType face object. */ /* */ /* <Input> */ /* stream :: The source font stream. */ /* */ /* face_index :: The index of the font face in the resource. */ /* */ /* num_params :: Number of additional generic parameters. Ignored. */ /* */ /* params :: Additional generic parameters. Ignored. */ /* */ /* <InOut> */ /* face :: The newly built face object. */ /* */ /* <Return> */ /* FreeType error code. 0 means success. */ /* */ LOCAL_DEF FT_Error T2_Init_Face( FT_Stream stream, T2_Face face, FT_Int face_index, FT_Int num_params, FT_Parameter* params ) { FT_Error error; SFNT_Interface* sfnt; sfnt = (SFNT_Interface*)FT_Get_Module_Interface( face->root.driver->root.library, "sfnt" ); if ( !sfnt ) goto Bad_Format; /* create input stream from resource */ if ( FILE_Seek( 0 ) ) goto Exit; /* check that we have a valid OpenType file */ error = sfnt->init_face( stream, face, face_index, num_params, params ); if ( error ) goto Exit; if ( face->format_tag != 0x4f54544fL ) /* OpenType/CFF font */ { FT_TRACE2(( "[not a valid OpenType/CFF font]\n" )); goto Bad_Format; } /* If we are performing a simple font format check, exit immediately */ if ( face_index < 0 ) return T2_Err_Ok; /* Load font directory */ error = sfnt->load_face( stream, face, face_index, num_params, params ); if ( error ) goto Exit; /* now, load the CFF part of the file.. */ error = face->goto_table( face, TTAG_CFF, stream, 0 ); if ( error ) goto Exit; { CFF_Font* cff; FT_Memory memory = face->root.memory; FT_Face root; if ( ALLOC( cff, sizeof ( *cff ) ) ) goto Exit; face->extra.data = cff; error = T2_Load_CFF_Font( stream, face_index, cff ); if ( error ) goto Exit; /* Complement the root flags with some interesting information. */ /* note that for OpenType/CFF, there is no need to do this, but */ /* this will be necessary for pure CFF fonts through. */ root = &face->root; } Exit: return error; Bad_Format: error = FT_Err_Unknown_File_Format; goto Exit; } /*************************************************************************/ /* */ /* <Function> */ /* T2_Done_Face */ /* */ /* <Description> */ /* Finalizes a given face object. */ /* */ /* <Input> */ /* face :: A pointer to the face object to destroy. */ /* */ LOCAL_DEF void T2_Done_Face( T2_Face face ) { FT_Memory memory = face->root.memory; SFNT_Interface* sfnt = face->sfnt; if ( sfnt ) sfnt->done_face( face ); { CFF_Font* cff = (CFF_Font*)face->extra.data; if ( cff ) { T2_Done_CFF_Font( cff ); FREE( face->extra.data ); } } } /*************************************************************************/ /* */ /* <Function> */ /* T2_Init_Driver */ /* */ /* <Description> */ /* Initializes a given OpenType driver object. */ /* */ /* <Input> */ /* driver :: A handle to the target driver object. */ /* */ /* <Return> */ /* FreeType error code. 0 means success. */ /* */ LOCAL_FUNC FT_Error T2_Init_Driver( T2_Driver driver ) { /* init extension registry if needed */ #ifdef TT_CONFIG_OPTION_EXTEND_ENGINE return TT_Init_Extensions( driver ); #else return T2_Err_Ok; #endif } /*************************************************************************/ /* */ /* <Function> */ /* T2_Done_Driver */ /* */ /* <Description> */ /* Finalizes a given OpenType driver. */ /* */ /* <Input> */ /* driver :: A handle to the target OpenType driver. */ /* */ LOCAL_FUNC void T2_Done_Driver( T2_Driver driver ) { /* destroy extensions registry if needed */ #ifdef TT_CONFIG_OPTION_EXTEND_ENGINE TT_Done_Extensions( driver ); #endif } /* END */