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freetype2/src/sfnt/sfntpic.c

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Position Independent Code (PIC) support in sfnt driver. * include/freetype/internal/services/svbdf.h add macros to init instances of FT_Service_BDFRec. * include/freetype/internal/services/svgldict.h add macros to init instances of FT_Service_GlyphDictRec. * include/freetype/internal/services/svpostnm.h add macros to init instances of FT_Service_PsFontNameRec. * include/freetype/internal/services/svsfnt.h add macros to init instances of FT_Service_SFNT_TableRec. * include/freetype/internal/services/svttcmap.h add macros to init instances of FT_Service_TTCMapsRec. * include/freetype/internal/sfnt.h add macros to init instances of SFNT_Interface. * src/sfnt/sfdriver.h declare sfnt_module_class using macros from ftmodapi.h, when FT_CONFIG_OPTION_PIC is defined create and destroy functions will be declared. * src/sfnt/sfdriver.c when FT_CONFIG_OPTION_PIC is defined the following structs: sfnt_service_sfnt_table, sfnt_service_glyph_dict, sfnt_service_ps_name tt_service_get_cmap_info, sfnt_service_bdf, sfnt_interface, sfnt_module_class, and sfnt_services array will have functions to init or create and destroy them instead of being allocated in the global scope. And macros will be used from sfntpic.h in order to access them from the pic_container. * src/sfnt/ttcmap.h add macros to init instances of TT_CMap_ClassRec. * src/sfnt/ttcmap.c when FT_CONFIG_OPTION_PIC is defined the following structs: tt_cmap0_class_rec, tt_cmap2_class_rec, tt_cmap4_class_rec tt_cmap6_class_rec, tt_cmap8_class_rec, tt_cmap10_class_rec, tt_cmap12_class_rec, tt_cmap14_class_rec and tt_cmap_classes array will have functions to init or create and destroy them instead of being allocated in the global scope. And macros will be used from sfntpic.h in order to access them from the pic_container. The content of tt_cmap_classes is now described in the new file 'ttcmapc.h'. New Files: * src/sfnt/sfntpic.h declare struct to hold PIC globals for sfnt driver and macros to access them. * src/sfnt/sfntpic.c implement functions to allocate, destroy and initialize PIC globals for sfnt driver. * src/sfnt/ttcmapc.h describing the content of tt_cmap_classes allocated in ttcmap.c * src/sfnt/sfnt.c add new file to build: sfntpic.c. * src/sfnt/jamfile add new files to FT2_MULTI build: sfntpic.c.
2009-04-05 17:08:32 +02:00
/***************************************************************************/
/* */
/* sfntpic.c */
/* */
/* The FreeType position independent code services for sfnt module. */
/* */
/* Copyright 2009 by */
/* Oran Agra and Mickey Gabel. */
/* */
/* 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_FREETYPE_H
#include FT_INTERNAL_OBJECTS_H
#include "sfntpic.h"
#ifdef FT_CONFIG_OPTION_PIC
/* forward declaration of PIC init functions from sfdriver.c */
FT_Error FT_Create_Class_sfnt_services( FT_Library, FT_ServiceDescRec**);
void FT_Destroy_Class_sfnt_services( FT_Library, FT_ServiceDescRec*);
void FT_Init_Class_sfnt_service_bdf( FT_Service_BDFRec*);
void FT_Init_Class_sfnt_interface( FT_Library, SFNT_Interface*);
void FT_Init_Class_sfnt_service_glyph_dict( FT_Library, FT_Service_GlyphDictRec*);
void FT_Init_Class_sfnt_service_ps_name( FT_Library, FT_Service_PsFontNameRec*);
void FT_Init_Class_tt_service_get_cmap_info( FT_Library, FT_Service_TTCMapsRec*);
void FT_Init_Class_sfnt_service_sfnt_table( FT_Service_SFNT_TableRec*);
/* forward declaration of PIC init functions from ttcmap.c */
FT_Error FT_Create_Class_tt_cmap_classes( FT_Library, TT_CMap_Class**);
void FT_Destroy_Class_tt_cmap_classes( FT_Library, TT_CMap_Class*);
void
sfnt_module_class_pic_free( FT_Library library )
{
FT_PIC_Container* pic_container = &library->pic_container;
FT_Memory memory = library->memory;
if ( pic_container->sfnt )
{
sfntModulePIC* container = (sfntModulePIC*)pic_container->sfnt;
if(container->sfnt_services)
FT_Destroy_Class_sfnt_services(library, container->sfnt_services);
container->sfnt_services = NULL;
if(container->tt_cmap_classes)
FT_Destroy_Class_tt_cmap_classes(library, container->tt_cmap_classes);
container->tt_cmap_classes = NULL;
FT_FREE( container );
pic_container->sfnt = NULL;
}
}
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;
}
#endif /* FT_CONFIG_OPTION_PIC */
/* END */