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ftinit.c
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1 /***************************************************************************/
2 /* */
3 /* ftinit.c */
4 /* */
5 /* FreeType initialization layer (body). */
6 /* */
7 /* Copyright 1996-2001, 2002, 2005, 2007, 2009, 2012 by */
8 /* David Turner, Robert Wilhelm, and Werner Lemberg. */
9 /* */
10 /* This file is part of the FreeType project, and may only be used, */
11 /* modified, and distributed under the terms of the FreeType project */
12 /* license, LICENSE.TXT. By continuing to use, modify, or distribute */
13 /* this file you indicate that you have read the license and */
14 /* understand and accept it fully. */
15 /* */
16 /***************************************************************************/
17 
18  /*************************************************************************/
19  /* */
20  /* The purpose of this file is to implement the following two */
21  /* functions: */
22  /* */
23  /* FT_Add_Default_Modules(): */
24  /* This function is used to add the set of default modules to a */
25  /* fresh new library object. The set is taken from the header file */
26  /* `freetype/config/ftmodule.h'. See the document `FreeType 2.0 */
27  /* Build System' for more information. */
28  /* */
29  /* FT_Init_FreeType(): */
30  /* This function creates a system object for the current platform, */
31  /* builds a library out of it, then calls FT_Default_Drivers(). */
32  /* */
33  /* Note that even if FT_Init_FreeType() uses the implementation of the */
34  /* system object defined at build time, client applications are still */
35  /* able to provide their own `ftsystem.c'. */
36  /* */
37  /*************************************************************************/
38 
39 
40 #include <ft2build.h>
41 #include FT_CONFIG_CONFIG_H
42 #include FT_INTERNAL_OBJECTS_H
43 #include FT_INTERNAL_DEBUG_H
44 #include FT_MODULE_H
45 #include "basepic.h"
46 
47 
48  /*************************************************************************/
49  /* */
50  /* The macro FT_COMPONENT is used in trace mode. It is an implicit */
51  /* parameter of the FT_TRACE() and FT_ERROR() macros, used to print/log */
52  /* messages during execution. */
53  /* */
54 #undef FT_COMPONENT
55 #define FT_COMPONENT trace_init
56 
57 
58 #ifndef FT_CONFIG_OPTION_PIC
59 
60 
61 #undef FT_USE_MODULE
62 #ifdef __cplusplus
63 #define FT_USE_MODULE( type, x ) extern "C" const type x;
64 #else
65 #define FT_USE_MODULE( type, x ) extern const type x;
66 #endif
67 
68 #include FT_CONFIG_MODULES_H
69 
70 #undef FT_USE_MODULE
71 #define FT_USE_MODULE( type, x ) (const FT_Module_Class*)&(x),
72 
73  static
75  {
76 #include FT_CONFIG_MODULES_H
77  0
78  };
79 
80 
81 #else /* FT_CONFIG_OPTION_PIC */
82 
83 
84 #ifdef __cplusplus
85 #define FT_EXTERNC extern "C"
86 #else
87 #define FT_EXTERNC extern
88 #endif
89 
90  /* declare the module's class creation/destruction functions */
91 #undef FT_USE_MODULE
92 #define FT_USE_MODULE( type, x ) \
93  FT_EXTERNC FT_Error \
94  FT_Create_Class_ ## x( FT_Library library, \
95  FT_Module_Class* *output_class ); \
96  FT_EXTERNC void \
97  FT_Destroy_Class_ ## x( FT_Library library, \
98  FT_Module_Class* clazz );
99 
100 #include FT_CONFIG_MODULES_H
101 
102  /* count all module classes */
103 #undef FT_USE_MODULE
104 #define FT_USE_MODULE( type, x ) MODULE_CLASS_ ## x,
105 
106  enum
107  {
108 #include FT_CONFIG_MODULES_H
109  FT_NUM_MODULE_CLASSES
110  };
111 
112  /* destroy all module classes */
113 #undef FT_USE_MODULE
114 #define FT_USE_MODULE( type, x ) \
115  if ( classes[i] ) \
116  { \
117  FT_Destroy_Class_ ## x( library, classes[i] ); \
118  } \
119  i++;
120 
121 
122  FT_BASE_DEF( void )
123  ft_destroy_default_module_classes( FT_Library library )
124  {
125  FT_Module_Class* *classes;
126  FT_Memory memory;
127  FT_UInt i;
128  BasePIC* pic_container = (BasePIC*)library->pic_container.base;
129 
130 
131  if ( !pic_container->default_module_classes )
132  return;
133 
134  memory = library->memory;
135  classes = pic_container->default_module_classes;
136  i = 0;
137 
138 #include FT_CONFIG_MODULES_H
139 
140  FT_FREE( classes );
141  pic_container->default_module_classes = 0;
142  }
143 
144 
145  /* initialize all module classes and the pointer table */
146 #undef FT_USE_MODULE
147 #define FT_USE_MODULE( type, x ) \
148  error = FT_Create_Class_ ## x( library, &clazz ); \
149  if ( error ) \
150  goto Exit; \
151  classes[i++] = clazz;
152 
153 
155  ft_create_default_module_classes( FT_Library library )
156  {
157  FT_Error error;
158  FT_Memory memory;
159  FT_Module_Class* *classes;
160  FT_Module_Class* clazz;
161  FT_UInt i;
162  BasePIC* pic_container = (BasePIC*)library->pic_container.base;
163 
164 
165  memory = library->memory;
166 
167  pic_container->default_module_classes = 0;
168 
169  if ( FT_ALLOC( classes, sizeof ( FT_Module_Class* ) *
170  ( FT_NUM_MODULE_CLASSES + 1 ) ) )
171  return error;
172 
173  /* initialize all pointers to 0, especially the last one */
174  for ( i = 0; i < FT_NUM_MODULE_CLASSES; i++ )
175  classes[i] = 0;
176  classes[FT_NUM_MODULE_CLASSES] = 0;
177 
178  i = 0;
179 
180 #include FT_CONFIG_MODULES_H
181 
182  Exit:
183  if ( error )
184  ft_destroy_default_module_classes( library );
185  else
186  pic_container->default_module_classes = classes;
187 
188  return error;
189  }
190 
191 
192 #endif /* FT_CONFIG_OPTION_PIC */
193 
194 
195  /* documentation is in ftmodapi.h */
196 
197  FT_EXPORT_DEF( void )
199  {
200  FT_Error error;
201  const FT_Module_Class* const* cur;
202 
203 
204  /* FT_DEFAULT_MODULES_GET dereferences `library' in PIC mode */
205 #ifdef FT_CONFIG_OPTION_PIC
206  if ( !library )
207  return;
208 #endif
209 
210  /* GCC 4.6 warns the type difference:
211  * FT_Module_Class** != const FT_Module_Class* const*
212  */
213  cur = (const FT_Module_Class* const*)FT_DEFAULT_MODULES_GET;
214 
215  /* test for valid `library' delayed to FT_Add_Module() */
216  while ( *cur )
217  {
218  error = FT_Add_Module( library, *cur );
219  /* notify errors, but don't stop */
220  if ( error )
221  FT_TRACE0(( "FT_Add_Default_Module:"
222  " Cannot install `%s', error = 0x%x\n",
223  (*cur)->module_name, error ));
224  cur++;
225  }
226  }
227 
228 
229  /* documentation is in freetype.h */
230 
233  {
234  FT_Error error;
235  FT_Memory memory;
236 
237 
238  /* First of all, allocate a new system object -- this function is part */
239  /* of the system-specific component, i.e. `ftsystem.c'. */
240 
241  memory = FT_New_Memory();
242  if ( !memory )
243  {
244  FT_ERROR(( "FT_Init_FreeType: cannot find memory manager\n" ));
245  return FT_Err_Unimplemented_Feature;
246  }
247 
248  /* build a library out of it, then fill it with the set of */
249  /* default drivers. */
250 
251  error = FT_New_Library( memory, alibrary );
252  if ( error )
253  FT_Done_Memory( memory );
254  else
255  FT_Add_Default_Modules( *alibrary );
256 
257  return error;
258  }
259 
260 
261  /* documentation is in freetype.h */
262 
265  {
266  if ( library )
267  {
268  FT_Memory memory = library->memory;
269 
270 
271  /* Discard the library object */
272  FT_Done_Library( library );
273 
274  /* discard memory manager */
275  FT_Done_Memory( memory );
276  }
277 
278  return FT_Err_Ok;
279  }
280 
281 
282 /* END */
#define FT_ALLOC(ptr, size)
Definition: ftmemory.h:260
int FT_Error
Definition: fttypes.h:296
#define FT_DEFAULT_MODULES_GET
Definition: basepic.h:30
FT_Done_Library(FT_Library library)
Definition: ftobjs.c:4501
FT_Library library
Definition: cffdrivr.c:409
return FT_Err_Ok
Definition: ftbbox.c:658
FT_Done_FreeType(FT_Library library)
Definition: ftinit.c:264
if(!yyg->yy_init)
FT_Init_FreeType(FT_Library *alibrary)
Definition: ftinit.c:232
#define FT_ERROR(varformat)
Definition: ftdebug.h:181
FT_New_Memory(void)
Definition: ftsystem.c:287
FT_Add_Module(FT_Library library, const FT_Module_Class *clazz)
Definition: ftobjs.c:4128
static const FT_Module_Class *const ft_default_modules[]
Definition: ftinit.c:74
#define FT_FREE(ptr)
Definition: ftmemory.h:286
FT_Error error
Definition: cffdrivr.c:407
#define FT_TRACE0(varformat)
Definition: ftdebug.h:157
typedefFT_BEGIN_HEADER struct FT_MemoryRec_ * FT_Memory
Definition: ftsystem.h:66
FT_New_Library(FT_Memory memory, FT_Library *alibrary)
Definition: ftobjs.c:4412
FT_Add_Default_Modules(FT_Library library)
Definition: ftinit.c:198
#define FT_EXPORT_DEF(x)
Definition: ftconfig.h:511
unsigned int FT_UInt
Definition: fttypes.h:227
#define FT_BASE_DEF(x)
Definition: ftconfig.h:489
int i
Definition: pngrutil.c:1377
FT_Done_Memory(FT_Memory memory)
Definition: ftsystem.c:311