Edit
kc3-lang/freetype/src/base/ftinit.c
Werner Lemberg
- src/base/ftinit.c
-
/***************************************************************************/ /* */ /* ftinit.c */ /* */ /* FreeType initialization layer (body). */ /* */ /* Copyright 1996-2001, 2002, 2005, 2007, 2009 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 = 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 = 0; } /* 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; FT_Module_Class* clazz; FT_UInt i; BasePIC* pic_container = library->pic_container.base; memory = library->memory; pic_container->default_module_classes = 0; 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] = 0; classes[FT_NUM_MODULE_CLASSES] = 0; 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; /* test for valid `library' delayed to FT_Add_Module() */ cur = FT_DEFAULT_MODULES_GET; 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; /* 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 ) 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 ) { 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 */