287 lines
8.9 KiB
C
287 lines
8.9 KiB
C
/***************************************************************************/
|
|
/* */
|
|
/* ftinit.c */
|
|
/* */
|
|
/* FreeType initialization layer (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. */
|
|
/* */
|
|
/***************************************************************************/
|
|
|
|
/*************************************************************************/
|
|
/* */
|
|
/* The purpose of this file is to implement the following two */
|
|
/* functions: */
|
|
/* */
|
|
/* FT_Add_Default_Modules(): */
|
|
/* This function is used to add the set of default modules to a */
|
|
/* fresh new library object. The set is taken from the header file */
|
|
/* `freetype/config/ftmodule.h'. See the document `FreeType 2.0 */
|
|
/* Build System' for more information. */
|
|
/* */
|
|
/* FT_Init_FreeType(): */
|
|
/* This function creates a system object for the current platform, */
|
|
/* builds a library out of it, then calls FT_Default_Drivers(). */
|
|
/* */
|
|
/* Note that even if FT_Init_FreeType() uses the implementation of the */
|
|
/* system object defined at build time, client applications are still */
|
|
/* able to provide their own `ftsystem.c'. */
|
|
/* */
|
|
/*************************************************************************/
|
|
|
|
|
|
#include <ft2build.h>
|
|
#include FT_CONFIG_CONFIG_H
|
|
#include FT_INTERNAL_OBJECTS_H
|
|
#include FT_INTERNAL_DEBUG_H
|
|
#include FT_MODULE_H
|
|
#include "basepic.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_init
|
|
|
|
|
|
#ifndef FT_CONFIG_OPTION_PIC
|
|
|
|
|
|
#undef FT_USE_MODULE
|
|
#ifdef __cplusplus
|
|
#define FT_USE_MODULE( type, x ) extern "C" const type x;
|
|
#else
|
|
#define FT_USE_MODULE( type, x ) extern const type x;
|
|
#endif
|
|
|
|
#include FT_CONFIG_MODULES_H
|
|
|
|
#undef FT_USE_MODULE
|
|
#define FT_USE_MODULE( type, x ) (const FT_Module_Class*)&(x),
|
|
|
|
static
|
|
const FT_Module_Class* const ft_default_modules[] =
|
|
{
|
|
#include FT_CONFIG_MODULES_H
|
|
0
|
|
};
|
|
|
|
|
|
#else /* FT_CONFIG_OPTION_PIC */
|
|
|
|
|
|
#ifdef __cplusplus
|
|
#define FT_EXTERNC extern "C"
|
|
#else
|
|
#define FT_EXTERNC extern
|
|
#endif
|
|
|
|
/* declare the module's class creation/destruction functions */
|
|
#undef FT_USE_MODULE
|
|
#define FT_USE_MODULE( type, x ) \
|
|
FT_EXTERNC FT_Error \
|
|
FT_Create_Class_ ## x( FT_Library library, \
|
|
FT_Module_Class* *output_class ); \
|
|
FT_EXTERNC void \
|
|
FT_Destroy_Class_ ## x( FT_Library library, \
|
|
FT_Module_Class* clazz );
|
|
|
|
#include FT_CONFIG_MODULES_H
|
|
|
|
/* count all module classes */
|
|
#undef FT_USE_MODULE
|
|
#define FT_USE_MODULE( type, x ) MODULE_CLASS_ ## x,
|
|
|
|
enum
|
|
{
|
|
#include FT_CONFIG_MODULES_H
|
|
FT_NUM_MODULE_CLASSES
|
|
};
|
|
|
|
/* destroy all module classes */
|
|
#undef FT_USE_MODULE
|
|
#define FT_USE_MODULE( type, x ) \
|
|
if ( classes[i] ) \
|
|
{ \
|
|
FT_Destroy_Class_ ## x( library, classes[i] ); \
|
|
} \
|
|
i++;
|
|
|
|
|
|
FT_BASE_DEF( void )
|
|
ft_destroy_default_module_classes( FT_Library library )
|
|
{
|
|
FT_Module_Class* *classes;
|
|
FT_Memory memory;
|
|
FT_UInt i;
|
|
BasePIC* pic_container = (BasePIC*)library->pic_container.base;
|
|
|
|
|
|
if ( !pic_container->default_module_classes )
|
|
return;
|
|
|
|
memory = library->memory;
|
|
classes = pic_container->default_module_classes;
|
|
i = 0;
|
|
|
|
#include FT_CONFIG_MODULES_H
|
|
|
|
FT_FREE( classes );
|
|
pic_container->default_module_classes = NULL;
|
|
}
|
|
|
|
|
|
/* initialize all module classes and the pointer table */
|
|
#undef FT_USE_MODULE
|
|
#define FT_USE_MODULE( type, x ) \
|
|
error = FT_Create_Class_ ## x( library, &clazz ); \
|
|
if ( error ) \
|
|
goto Exit; \
|
|
classes[i++] = clazz;
|
|
|
|
|
|
FT_BASE_DEF( FT_Error )
|
|
ft_create_default_module_classes( FT_Library library )
|
|
{
|
|
FT_Error error;
|
|
FT_Memory memory;
|
|
FT_Module_Class* *classes = NULL;
|
|
FT_Module_Class* clazz;
|
|
FT_UInt i;
|
|
BasePIC* pic_container = (BasePIC*)library->pic_container.base;
|
|
|
|
|
|
memory = library->memory;
|
|
|
|
pic_container->default_module_classes = NULL;
|
|
|
|
if ( FT_ALLOC( classes, sizeof ( FT_Module_Class* ) *
|
|
( FT_NUM_MODULE_CLASSES + 1 ) ) )
|
|
return error;
|
|
|
|
/* initialize all pointers to 0, especially the last one */
|
|
for ( i = 0; i < FT_NUM_MODULE_CLASSES; i++ )
|
|
classes[i] = NULL;
|
|
classes[FT_NUM_MODULE_CLASSES] = NULL;
|
|
|
|
i = 0;
|
|
|
|
#include FT_CONFIG_MODULES_H
|
|
|
|
Exit:
|
|
if ( error )
|
|
ft_destroy_default_module_classes( library );
|
|
else
|
|
pic_container->default_module_classes = classes;
|
|
|
|
return error;
|
|
}
|
|
|
|
|
|
#endif /* FT_CONFIG_OPTION_PIC */
|
|
|
|
|
|
/* documentation is in ftmodapi.h */
|
|
|
|
FT_EXPORT_DEF( void )
|
|
FT_Add_Default_Modules( FT_Library library )
|
|
{
|
|
FT_Error error;
|
|
const FT_Module_Class* const* cur;
|
|
|
|
|
|
/* FT_DEFAULT_MODULES_GET dereferences `library' in PIC mode */
|
|
#ifdef FT_CONFIG_OPTION_PIC
|
|
if ( !library )
|
|
return;
|
|
#endif
|
|
|
|
/* GCC 4.6 warns the type difference:
|
|
* FT_Module_Class** != const FT_Module_Class* const*
|
|
*/
|
|
cur = (const FT_Module_Class* const*)FT_DEFAULT_MODULES_GET;
|
|
|
|
/* test for valid `library' delayed to FT_Add_Module() */
|
|
while ( *cur )
|
|
{
|
|
error = FT_Add_Module( library, *cur );
|
|
/* notify errors, but don't stop */
|
|
if ( error )
|
|
FT_TRACE0(( "FT_Add_Default_Module:"
|
|
" Cannot install `%s', error = 0x%x\n",
|
|
(*cur)->module_name, error ));
|
|
cur++;
|
|
}
|
|
}
|
|
|
|
|
|
/* documentation is in freetype.h */
|
|
|
|
FT_EXPORT_DEF( FT_Error )
|
|
FT_Init_FreeType( FT_Library *alibrary )
|
|
{
|
|
FT_Error error;
|
|
FT_Memory memory;
|
|
|
|
|
|
/* check of `alibrary' delayed to `FT_New_Library' */
|
|
|
|
/* First of all, allocate a new system object -- this function is part */
|
|
/* of the system-specific component, i.e. `ftsystem.c'. */
|
|
|
|
memory = FT_New_Memory();
|
|
if ( !memory )
|
|
{
|
|
FT_ERROR(( "FT_Init_FreeType: cannot find memory manager\n" ));
|
|
return FT_THROW( Unimplemented_Feature );
|
|
}
|
|
|
|
/* build a library out of it, then fill it with the set of */
|
|
/* default drivers. */
|
|
|
|
error = FT_New_Library( memory, alibrary );
|
|
if ( error )
|
|
FT_Done_Memory( memory );
|
|
else
|
|
FT_Add_Default_Modules( *alibrary );
|
|
|
|
return error;
|
|
}
|
|
|
|
|
|
/* documentation is in freetype.h */
|
|
|
|
FT_EXPORT_DEF( FT_Error )
|
|
FT_Done_FreeType( FT_Library library )
|
|
{
|
|
FT_Memory memory;
|
|
|
|
|
|
if ( !library )
|
|
return FT_THROW( Invalid_Library_Handle );
|
|
|
|
memory = library->memory;
|
|
|
|
/* Discard the library object */
|
|
FT_Done_Library( library );
|
|
|
|
/* discard memory manager */
|
|
FT_Done_Memory( memory );
|
|
|
|
return FT_Err_Ok;
|
|
}
|
|
|
|
|
|
/* END */
|