1 /****************************************************************************
   2  *
   3  * svsfnt.h
   4  *
   5  *   The FreeType SFNT table loading service (specification).
   6  *
   7  * Copyright (C) 2003-2019 by
   8  * David Turner, Robert Wilhelm, and Werner Lemberg.
   9  *
  10  * This file is part of the FreeType project, and may only be used,
  11  * modified, and distributed under the terms of the FreeType project
  12  * license, LICENSE.TXT.  By continuing to use, modify, or distribute
  13  * this file you indicate that you have read the license and
  14  * understand and accept it fully.
  15  *
  16  */
  17 
  18 
  19 #ifndef SVSFNT_H_
  20 #define SVSFNT_H_
  21 
  22 #include FT_INTERNAL_SERVICE_H
  23 #include FT_TRUETYPE_TABLES_H
  24 
  25 
  26 FT_BEGIN_HEADER
  27 
  28 
  29   /*
  30    * SFNT table loading service.
  31    */
  32 
  33 #define FT_SERVICE_ID_SFNT_TABLE  "sfnt-table"
  34 
  35 
  36   /*
  37    * Used to implement FT_Load_Sfnt_Table().
  38    */
  39   typedef FT_Error
  40   (*FT_SFNT_TableLoadFunc)( FT_Face    face,
  41                             FT_ULong   tag,
  42                             FT_Long    offset,
  43                             FT_Byte*   buffer,
  44                             FT_ULong*  length );
  45 
  46   /*
  47    * Used to implement FT_Get_Sfnt_Table().
  48    */
  49   typedef void*
  50   (*FT_SFNT_TableGetFunc)( FT_Face      face,
  51                            FT_Sfnt_Tag  tag );
  52 
  53 
  54   /*
  55    * Used to implement FT_Sfnt_Table_Info().
  56    */
  57   typedef FT_Error
  58   (*FT_SFNT_TableInfoFunc)( FT_Face    face,
  59                             FT_UInt    idx,
  60                             FT_ULong  *tag,
  61                             FT_ULong  *offset,
  62                             FT_ULong  *length );
  63 
  64 
  65   FT_DEFINE_SERVICE( SFNT_Table )
  66   {
  67     FT_SFNT_TableLoadFunc  load_table;
  68     FT_SFNT_TableGetFunc   get_table;
  69     FT_SFNT_TableInfoFunc  table_info;
  70   };
  71 
  72 
  73 #define FT_DEFINE_SERVICE_SFNT_TABLEREC( class_, load_, get_, info_ )  \
  74   static const FT_Service_SFNT_TableRec  class_ =                      \
  75   {                                                                    \
  76     load_, get_, info_                                                 \
  77   };
  78 
  79   /* */
  80 
  81 
  82 FT_END_HEADER
  83 
  84 
  85 #endif /* SVSFNT_H_ */
  86 
  87 
  88 /* END */