ref: 2b38105bb4f24e9990844be297b990307dc98a01
dir: /libfreetype/ftinit.c/
/***************************************************************************/
/* */
/* ftinit.c */
/* */
/* FreeType initialization layer (body). */
/* */
/* Copyright 1996-2001, 2002 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
/*************************************************************************/
/* */
/* 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
#undef FT_USE_MODULE
#ifdef __cplusplus
#define FT_USE_MODULE( x ) extern "C" const FT_Module_Class* x;
#else
#define FT_USE_MODULE( x ) extern const FT_Module_Class* x;
#endif
#include FT_CONFIG_MODULES_H
#undef FT_USE_MODULE
#define FT_USE_MODULE( x ) (const FT_Module_Class*)&x,
static
const FT_Module_Class* const ft_default_modules[] =
{
#include FT_CONFIG_MODULES_H
0
};
/* documentation is in ftmodule.h */
FT_EXPORT_DEF( void )
FT_Add_Default_Modules( FT_Library library )
{
FT_Error error;
const FT_Module_Class* const* cur;
/* test for valid `library' delayed to FT_Add_Module() */
cur = ft_default_modules;
while ( *cur )
{
error = FT_Add_Module( library, *cur );
/* notify errors, but don't stop */
if ( error )
{
FT_ERROR(( "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;
/* 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_Err_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 )
{
(*alibrary)->version_major = FREETYPE_MAJOR;
(*alibrary)->version_minor = FREETYPE_MINOR;
(*alibrary)->version_patch = FREETYPE_PATCH;
FT_Add_Default_Modules( *alibrary );
}
return error;
}
/* documentation is in freetype.h */
FT_EXPORT_DEF( FT_Error )
FT_Done_FreeType( FT_Library library )
{
if ( library )
{
FT_Memory memory = library->memory;
/* Discard the library object */
FT_Done_Library( library );
/* discard memory manager */
FT_Done_Memory( memory );
}
return FT_Err_Ok;
}
/* END */