C++ FT_MEM_SET函数代码示例

  FT_Error
  tt_driver_class_pic_init( FT_Library  library )
  {
    FT_PIC_Container*  pic_container = &library->pic_container;
    FT_Error           error         = FT_Err_Ok;
    TTModulePIC*       container     = NULL;
    FT_Memory          memory        = library->memory;


    /* allocate pointer, clear and set global container pointer */
    if ( FT_ALLOC( container, sizeof ( *container ) ) )
      return error;
    FT_MEM_SET( container, 0, sizeof ( *container ) );
    pic_container->truetype = container;

    /* initialize pointer table - this is how the module usually */
    /* expects this data                                         */
    error = FT_Create_Class_tt_services( library,
                                         &container->tt_services );
    if ( error )
      goto Exit;
#ifdef TT_CONFIG_OPTION_GX_VAR_SUPPORT
    FT_Init_Class_tt_service_gx_multi_masters(
      &container->tt_service_gx_multi_masters );
#endif
    FT_Init_Class_tt_service_truetype_glyf(
      &container->tt_service_truetype_glyf );

  Exit:
    if ( error )
      tt_driver_class_pic_free( library );
    return error;
  }

  FT_Error
  cff_driver_class_pic_init(  FT_Library library )
  {
    FT_PIC_Container* pic_container = &library->pic_container;
    FT_Error        error = FT_Err_Ok;
    CffModulePIC* container;
    FT_Memory memory = library->memory;

    /* allocate pointer, clear and set global container pointer */
    if ( FT_ALLOC ( container, sizeof ( *container ) ) )
      return error;
    FT_MEM_SET( container, 0, sizeof(*container) );
    pic_container->cff = container;

    /* initialize pointer table - this is how the module usually expects this data */
    error = FT_Create_Class_cff_services(library, &container->cff_services);
    if(error) 
      goto Exit;
    error = FT_Create_Class_cff_field_handlers(library, &container->cff_field_handlers);
    if(error) 
      goto Exit;
    FT_Init_Class_cff_service_ps_info(library, &container->cff_service_ps_info);
    FT_Init_Class_cff_service_glyph_dict(library, &container->cff_service_glyph_dict);
    FT_Init_Class_cff_service_ps_name(library, &container->cff_service_ps_name);
    FT_Init_Class_cff_service_get_cmap_info(library, &container->cff_service_get_cmap_info);
    FT_Init_Class_cff_service_cid_info(library, &container->cff_service_cid_info);
    FT_Init_Class_cff_cmap_encoding_class_rec(library, &container->cff_cmap_encoding_class_rec);
    FT_Init_Class_cff_cmap_unicode_class_rec(library, &container->cff_cmap_unicode_class_rec);
Exit:
    if(error)
      cff_driver_class_pic_free(library);
    return error;
  }

  FT_Error
  ft_raster1_renderer_class_pic_init( FT_Library  library )
  {
    FT_PIC_Container*  pic_container = &library->pic_container;
    FT_Error           error         = FT_Err_Ok;
    RasterPIC*         container     = NULL;
    FT_Memory          memory        = library->memory;


    /* XXX: since this function also served the no longer available  */
    /*      raster5 renderer it uses reference counting, which could */
    /*      be removed now                                           */
    if ( pic_container->raster )
    {
      ((RasterPIC*)pic_container->raster)->ref_count++;
      return error;
    }

    /* allocate pointer, clear and set global container pointer */
    if ( FT_ALLOC( container, sizeof ( *container ) ) )
      return error;
    FT_MEM_SET( container, 0, sizeof ( *container ) );
    pic_container->raster = container;

    container->ref_count = 1;

    /* initialize pointer table -                       */
    /* this is how the module usually expects this data */
    FT_Init_Class_ft_standard_raster( &container->ft_standard_raster );

    return error;
  }

  FT_Error
  ft_smooth_renderer_class_pic_init( FT_Library  library )
  {
    FT_PIC_Container*  pic_container = &library->pic_container;
    FT_Error           error         = FT_Err_Ok;
    SmoothPIC*         container     = NULL;
    FT_Memory          memory        = library->memory;


    /* since this function also serve smooth_lcd and smooth_lcdv renderers,
       it implements reference counting */
    if ( pic_container->smooth )
    {
      ((SmoothPIC*)pic_container->smooth)->ref_count++;
      return error;
    }

    /* allocate pointer, clear and set global container pointer */
    if ( FT_ALLOC( container, sizeof ( *container ) ) )
      return error;
    FT_MEM_SET( container, 0, sizeof ( *container ) );
    pic_container->smooth = container;

    container->ref_count = 1;

    /* initialize pointer table -                       */
    /* this is how the module usually expects this data */
    FT_Init_Class_ft_grays_raster( &container->ft_grays_raster );

    return error;
  }

  FT_Error
  psnames_module_class_pic_init( FT_Library  library )
  {
    FT_PIC_Container*  pic_container = &library->pic_container;
    FT_Error           error         = PSnames_Err_Ok;
    PSModulePIC*       container;
    FT_Memory          memory        = library->memory;


    /* allocate pointer, clear and set global container pointer */
    if ( FT_ALLOC ( container, sizeof ( *container ) ) )
      return error;
    FT_MEM_SET( container, 0, sizeof(*container) );
    pic_container->psnames = container;

    /* initialize pointer table - this is how the module usually expects this data */
    error = FT_Create_Class_pscmaps_services(library, &container->pscmaps_services);
    if(error) 
      goto Exit;
    FT_Init_Class_pscmaps_interface(library, &container->pscmaps_interface);
    
Exit:
    if(error)
      psnames_module_class_pic_free(library);
    return error;
  }

  FT_Alloc( FT_Memory  memory,
            FT_Long    size,
            void*     *P )
  {
    FT_ASSERT( P != 0 );

    if ( size > 0 )
    {
      *P = memory->alloc( memory, size );
      if ( !*P )
      {
        FT_ERROR(( "FT_Alloc:" ));
        FT_ERROR(( " Out of memory? (%ld requested)\n",
                   size ));

        return FT_Err_Out_Of_Memory;
      }
      FT_MEM_SET( *P, 0, size );
    }
    else
      *P = NULL;

    FT_TRACE7(( "FT_Alloc:" ));
    FT_TRACE7(( " size = %ld, block = 0x%08p, ref = 0x%08p\n",
                size, *P, P ));

    return FT_Err_Ok;
  }

  FT_Error
  sfnt_module_class_pic_init(  FT_Library library )
  {
    FT_PIC_Container* pic_container = &library->pic_container;
    FT_Error        error = FT_Err_Ok;
    sfntModulePIC* container;
    FT_Memory memory = library->memory;

    /* allocate pointer, clear and set global container pointer */
    if ( FT_ALLOC ( container, sizeof ( *container ) ) )
      return error;
    FT_MEM_SET( container, 0, sizeof(*container) );
    pic_container->sfnt = container;

    /* initialize pointer table - this is how the module usually expects this data */
    error = FT_Create_Class_sfnt_services(library, &container->sfnt_services);
    if(error)
      goto Exit;
    error = FT_Create_Class_tt_cmap_classes(library, &container->tt_cmap_classes);
    if(error)
      goto Exit;
    FT_Init_Class_sfnt_service_glyph_dict(library, &container->sfnt_service_glyph_dict);
    FT_Init_Class_sfnt_service_ps_name(library, &container->sfnt_service_ps_name);
    FT_Init_Class_tt_service_get_cmap_info(library, &container->tt_service_get_cmap_info);
    FT_Init_Class_sfnt_service_sfnt_table(&container->sfnt_service_sfnt_table);
#ifdef TT_CONFIG_OPTION_BDF
    FT_Init_Class_sfnt_service_bdf(&container->sfnt_service_bdf);
#endif
    FT_Init_Class_sfnt_interface(library, &container->sfnt_interface);

Exit:
    if(error)
      sfnt_module_class_pic_free(library);
    return error;
  }

  FT_Error
  ft_raster1_renderer_class_pic_init( FT_Library  library )
  {
    FT_PIC_Container* pic_container = &library->pic_container;
    FT_Error          error         = Raster_Err_Ok;
    RasterPIC*        container;
    FT_Memory         memory        = library->memory;


    /* since this function also serve raster5 renderer,
       it implements reference counting */
    if ( pic_container->raster )
    {
      ((RasterPIC*)pic_container->raster)->ref_count++;
      return error;
    }

    /* allocate pointer, clear and set global container pointer */
    if ( FT_ALLOC( container, sizeof ( *container ) ) )
      return error;
    FT_MEM_SET( container, 0, sizeof ( *container ) );
    pic_container->raster = container;
    container->ref_count = 1;

    /* initialize pointer table - this is how the module usually expects this data */
    FT_Init_Class_ft_standard_raster( &container->ft_standard_raster );
/*Exit:*/
    if( error )
      ft_raster1_renderer_class_pic_free( library );
    return error;
  }

  /* return the glyph's control box */
  static void
  ft_smooth_get_cbox( FT_Renderer   render,
                      FT_GlyphSlot  slot,
                      FT_BBox*      cbox )
  {
    FT_MEM_SET( cbox, 0, sizeof ( *cbox ) );

    if ( slot->format == render->glyph_format )
      FT_Outline_Get_CBox( &slot->outline, cbox );
  }

  ft_pic_container_init( FT_Library  library )
  {
    FT_PIC_Container*  pic_container = &library->pic_container;
    FT_Error  error = FT_Err_Ok;

    FT_MEM_SET( pic_container, 0, sizeof ( *pic_container ) );

    error = ft_base_pic_init( library );
    if ( error )
      return error;

    return FT_Err_Ok;
  }

  static FT_MemTable
  ft_mem_table_new( FT_Memory  memory )
  {
    FT_MemTable  table;


    table = (FT_MemTable)memory->alloc( memory, sizeof ( *table ) );
    if ( table == NULL )
      goto Exit;

    FT_MEM_SET( table, 0, sizeof ( *table ) );

    table->size  = FT_MEM_SIZE_MIN;
    table->nodes = 0;

    table->memory = memory;

    table->memory_user = memory->user;

    table->alloc   = memory->alloc;
    table->realloc = memory->realloc;
    table->free    = memory->free;

    table->buckets = (FT_MemNode *)
                     memory->alloc( memory,
                                    table->size * sizeof ( FT_MemNode ) );
    if ( table->buckets )
      FT_MEM_SET( table->buckets, 0, sizeof ( FT_MemNode ) * table->size );
    else
    {
      memory->free( memory, table );
      table = NULL;
    }

  Exit:
    return table;
  }

  FT_Error
  autofit_module_class_pic_init( FT_Library  library )
  {
    FT_PIC_Container*  pic_container = &library->pic_container;
    FT_UInt            ss;
    FT_Error           error         = AF_Err_Ok;
    AFModulePIC*       container;
    FT_Memory          memory        = library->memory;


    /* allocate pointer, clear and set global container pointer */
    if ( FT_ALLOC ( container, sizeof ( *container ) ) )
      return error;
    FT_MEM_SET( container, 0, sizeof ( *container ) );
    pic_container->autofit = container;

    /* initialize pointer table -                       */
    /* this is how the module usually expects this data */
    for ( ss = 0 ; ss < AF_SCRIPT_CLASSES_REC_COUNT ; ss++ )
    {
      container->af_script_classes[ss] =
        &container->af_script_classes_rec[ss];
    }
    container->af_script_classes[AF_SCRIPT_CLASSES_COUNT - 1] = NULL;
    
    /* add call to initialization function when you add new scripts */
    ss = 0;
    FT_Init_Class_af_dummy_script_class(
      &container->af_script_classes_rec[ss++] );
#ifdef FT_OPTION_AUTOFIT2
    FT_Init_Class_af_latin2_script_class(
      &container->af_script_classes_rec[ss++] );
#endif
    FT_Init_Class_af_latin_script_class(
      &container->af_script_classes_rec[ss++] );
    FT_Init_Class_af_cjk_script_class(
      &container->af_script_classes_rec[ss++] );
    FT_Init_Class_af_indic_script_class(
      &container->af_script_classes_rec[ss++] );

    FT_Init_Class_af_autofitter_service(
      library, &container->af_autofitter_service );

/* Exit: */

    if ( error )
      autofit_module_class_pic_free( library );
    return error;
  }

  static void
  ft_mem_table_resize( FT_MemTable  table )
  {
    FT_ULong  new_size;


    new_size = ft_mem_closest_prime( table->nodes );
    if ( new_size != table->size )
    {
      FT_MemNode*  new_buckets ;
      FT_ULong     i;


      new_buckets = (FT_MemNode *)
                    ft_mem_table_alloc( table,
                                        new_size * sizeof ( FT_MemNode ) );
      if ( new_buckets == NULL )
        return;

      FT_MEM_SET( new_buckets, 0, sizeof ( FT_MemNode ) * new_size );

      for ( i = 0; i < table->size; i++ )
      {
        FT_MemNode  node, next, *pnode;
        FT_ULong    hash;


        node = table->buckets[i];
        while ( node )
        {
          next  = node->link;
          hash  = FT_MEM_VAL( node->address ) % new_size;
          pnode = new_buckets + hash;

          node->link = pnode[0];
          pnode[0]   = node;

          node = next;
        }
      }

      if ( table->buckets )
        ft_mem_table_free( table, table->buckets );

      table->buckets = new_buckets;
      table->size    = new_size;
    }
  }

  FT_Error
  pshinter_module_class_pic_init( FT_Library library )
  {
    FT_PIC_Container* pic_container = &library->pic_container;
    FT_Error        error = FT_Err_Ok;
    PSHinterPIC*  container;
    FT_Memory memory = library->memory;

    /* allocate pointer, clear and set global container pointer */
    if ( FT_ALLOC ( container, sizeof ( *container ) ) )
      return error;
    FT_MEM_SET( container, 0, sizeof(*container) );
    pic_container->pshinter = container;

    /* add call to initialization function when you add new scripts */
    FT_Init_Class_pshinter_interface(library, &container->pshinter_interface);

/*Exit:*/
    if(error)
      pshinter_module_class_pic_free(library);
    return error;
  }

  T1_Decoder_Init( T1_Decoder           decoder,
                   FT_Face              face,
                   FT_Size              size,
                   FT_GlyphSlot         slot,
                   FT_Byte**            glyph_names,
                   PS_Blend             blend,
                   FT_Bool              hinting,
                   T1_Decoder_Callback  parse_callback )
  {
    FT_MEM_SET( decoder, 0, sizeof ( *decoder ) );

    /* retrieve PSNames interface from list of current modules */
    {
      PSNames_Service  psnames = 0;


      psnames = (PSNames_Service)FT_Get_Module_Interface(
                  FT_FACE_LIBRARY(face), "psnames" );
      if ( !psnames )
      {
        FT_ERROR(( "T1_Decoder_Init: " ));
        FT_ERROR(( "the `psnames' module is not available\n" ));
        return PSaux_Err_Unimplemented_Feature;
      }

      decoder->psnames = psnames;
    }

    T1_Builder_Init( &decoder->builder, face, size, slot, hinting );

    decoder->num_glyphs     = face->num_glyphs;
    decoder->glyph_names    = glyph_names;
    decoder->blend          = blend;
    decoder->parse_callback = parse_callback;

    decoder->funcs          = t1_decoder_funcs;

    return 0;
  }