ref: 7024ca1a37b7753e5c0de13330cb34fdbf28fb18
dir: /src/base/ftinit.c/
/***************************************************************************/
/* */
/* ftinit.c */
/* */
/* FreeType initialisation layer (body). */
/* */
/* Copyright 1996-2000 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 three following */
/* functions: */
/* */
/* FT_Default_Drivers: */
/* This function is used to add the set of default drivers to a */
/* fresh new library object. The set is computed at compile time */
/* from the Makefiles inclusions in Makefile.lib. See the document */
/* `FreeType Internals' for more info. */
/* */
/* FT_Init_FreeType: */
/* This function creates a system object for the current platform, */
/* builds a library out of it, then calls FT_Default_Drivers(). */
/* */
/* FT_Done_FreeType: */
/* This function simply finalizes the library and the corresponding */
/* system object. */
/* */
/* 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 <ftobjs.h>
#include <ftconfig.h>
#include <ftdebug.h>
#include <ftdriver.h>
#undef FT_COMPONENT
#define FT_COMPONENT trace_init
#undef FT_DRIVER
#define FT_DRIVER( x ) extern FT_DriverInterface x;
#include <ftmodule.h>
#undef FT_DRIVER
#define FT_DRIVER( x ) &x,
static
const FT_DriverInterface* ft_default_drivers[] =
{
#include <ftmodule.h>
0
};
/*************************************************************************/
/* */
/* <Function> */
/* FT_Default_Drivers */
/* */
/* <Description> */
/* Adds the set of default drivers to a given library object. */
/* */
/* <InOut> */
/* library :: A handle to a new library object. */
/* */
EXPORT_FUNC
void FT_Default_Drivers( FT_Library library )
{
FT_Error error;
const FT_DriverInterface* *cur;
cur = ft_default_drivers;
while ( *cur )
{
error = FT_Add_Driver( library, *cur );
/* notify errors, but don't stop */
if ( error )
FT_ERROR(( "FT.Default_Drivers: Cannot install `%s', error = %x\n",
(*cur)->driver_name, error ));
cur++;
}
}
/*************************************************************************/
/* */
/* <Function> */
/* FT_Init_FreeType */
/* */
/* <Description> */
/* Initializes a new FreeType library object. The set of drivers */
/* that are registered by this function is determined at build time. */
/* */
/* <Output> */
/* library :: A handle to a new library object. */
/* */
/* <Return> */
/* FreeTyoe error code. 0 means success. */
/* */
EXPORT_FUNC
FT_Error FT_Init_FreeType( FT_Library* library )
{
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:" ));
FT_ERROR(( " cannot find memory manager" ));
return FT_Err_Unimplemented_Feature;
}
/* builds a library out of it, then fill it with the set of */
/* default drivers. */
error = FT_New_Library( memory, library );
if ( !error )
FT_Default_Drivers( *library );
return error;
}
/* END */