2 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
6 % M M OOO DDDD U U L EEEEE %
7 % MM MM O O D D U U L E %
8 % M M M O O D D U U L EEE %
9 % M M O O D D U U L E %
10 % M M OOO DDDD UUU LLLLL EEEEE %
13 % MagickCore Module Methods %
20 % Copyright 1999-2014 ImageMagick Studio LLC, a non-profit organization %
21 % dedicated to making software imaging solutions freely available. %
23 % You may not use this file except in compliance with the License. You may %
24 % obtain a copy of the License at %
26 % http://www.imagemagick.org/script/license.php %
28 % Unless required by applicable law or agreed to in writing, software %
29 % distributed under the License is distributed on an "AS IS" BASIS, %
30 % WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. %
31 % See the License for the specific language governing permissions and %
32 % limitations under the License. %
34 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
43 #include "MagickCore/studio.h"
44 #include "MagickCore/blob.h"
45 #include "MagickCore/coder.h"
46 #include "MagickCore/client.h"
47 #include "MagickCore/configure.h"
48 #include "MagickCore/exception.h"
49 #include "MagickCore/exception-private.h"
50 #include "MagickCore/log.h"
51 #include "MagickCore/hashmap.h"
52 #include "MagickCore/magic.h"
53 #include "MagickCore/magick.h"
54 #include "MagickCore/memory_.h"
55 #include "MagickCore/module.h"
56 #include "MagickCore/module-private.h"
57 #include "MagickCore/nt-base-private.h"
58 #include "MagickCore/policy.h"
59 #include "MagickCore/semaphore.h"
60 #include "MagickCore/splay-tree.h"
61 #include "MagickCore/static.h"
62 #include "MagickCore/string_.h"
63 #include "MagickCore/string-private.h"
64 #include "MagickCore/token.h"
65 #include "MagickCore/utility.h"
66 #include "MagickCore/utility-private.h"
67 #if defined(MAGICKCORE_MODULES_SUPPORT)
68 #if defined(MAGICKCORE_LTDL_DELEGATE)
70 typedef lt_dlhandle ModuleHandle;
72 typedef void *ModuleHandle;
78 #if defined(MAGICKCORE_LTDL_DELEGATE)
79 # define ModuleGlobExpression "*.la"
82 # define ModuleGlobExpression "IM_MOD_DB_*.dll"
84 # define ModuleGlobExpression "IM_MOD_RL_*.dll"
92 *module_semaphore = (SemaphoreInfo *) NULL;
95 *module_list = (SplayTreeInfo *) NULL;
100 static const ModuleInfo
101 *RegisterModule(const ModuleInfo *,ExceptionInfo *);
103 static MagickBooleanType
104 GetMagickModulePath(const char *,MagickModuleType,char *,ExceptionInfo *),
105 IsModuleTreeInstantiated(ExceptionInfo *),
106 UnregisterModule(const ModuleInfo *,ExceptionInfo *);
109 TagToCoderModuleName(const char *,char *),
110 TagToFilterModuleName(const char *,char *),
111 TagToModuleName(const char *,const char *,char *);
114 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
118 % A c q u i r e M o d u l e I n f o %
122 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
124 % AcquireModuleInfo() allocates the ModuleInfo structure.
126 % The format of the AcquireModuleInfo method is:
128 % ModuleInfo *AcquireModuleInfo(const char *path,const char *tag)
130 % A description of each parameter follows:
132 % o path: the path associated with the tag.
134 % o tag: a character string that represents the image format we are
138 MagickExport ModuleInfo *AcquireModuleInfo(const char *path,const char *tag)
143 module_info=(ModuleInfo *) AcquireMagickMemory(sizeof(*module_info));
144 if (module_info == (ModuleInfo *) NULL)
145 ThrowFatalException(ResourceLimitFatalError,"MemoryAllocationFailed");
146 (void) ResetMagickMemory(module_info,0,sizeof(*module_info));
147 if (path != (const char *) NULL)
148 module_info->path=ConstantString(path);
149 if (tag != (const char *) NULL)
150 module_info->tag=ConstantString(tag);
151 module_info->timestamp=time(0);
152 module_info->signature=MagickSignature;
157 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
161 % D e s t r o y M o d u l e L i s t %
165 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
167 % DestroyModuleList() unregisters any previously loaded modules and exits
168 % the module loaded environment.
170 % The format of the DestroyModuleList module is:
172 % void DestroyModuleList(void)
175 MagickExport void DestroyModuleList(void)
178 Destroy magick modules.
180 LockSemaphoreInfo(module_semaphore);
181 #if defined(MAGICKCORE_MODULES_SUPPORT)
182 if (module_list != (SplayTreeInfo *) NULL)
183 module_list=DestroySplayTree(module_list);
185 UnlockSemaphoreInfo(module_semaphore);
189 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
193 % G e t M o d u l e I n f o %
197 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
199 % GetModuleInfo() returns a pointer to a ModuleInfo structure that matches the
200 % specified tag. If tag is NULL, the head of the module list is returned. If
201 % no modules are loaded, or the requested module is not found, NULL is
204 % The format of the GetModuleInfo module is:
206 % ModuleInfo *GetModuleInfo(const char *tag,ExceptionInfo *exception)
208 % A description of each parameter follows:
210 % o tag: a character string that represents the image format we are
213 % o exception: return any errors or warnings in this structure.
216 MagickExport ModuleInfo *GetModuleInfo(const char *tag,ExceptionInfo *exception)
221 if (IsModuleTreeInstantiated(exception) == MagickFalse)
222 return((ModuleInfo *) NULL);
223 LockSemaphoreInfo(module_semaphore);
224 ResetSplayTreeIterator(module_list);
225 if ((tag == (const char *) NULL) || (LocaleCompare(tag,"*") == 0))
227 #if defined(MAGICKCORE_MODULES_SUPPORT)
228 if (LocaleCompare(tag,"*") == 0)
229 (void) OpenModules(exception);
231 module_info=(ModuleInfo *) GetNextValueInSplayTree(module_list);
232 UnlockSemaphoreInfo(module_semaphore);
235 module_info=(ModuleInfo *) GetValueFromSplayTree(module_list,tag);
236 UnlockSemaphoreInfo(module_semaphore);
241 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
245 % G e t M o d u l e I n f o L i s t %
249 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
251 % GetModuleInfoList() returns any modules that match the specified pattern.
253 % The format of the GetModuleInfoList function is:
255 % const ModuleInfo **GetModuleInfoList(const char *pattern,
256 % size_t *number_modules,ExceptionInfo *exception)
258 % A description of each parameter follows:
260 % o pattern: Specifies a pointer to a text string containing a pattern.
262 % o number_modules: This integer returns the number of modules in the list.
264 % o exception: return any errors or warnings in this structure.
268 #if defined(__cplusplus) || defined(c_plusplus)
272 static int ModuleInfoCompare(const void *x,const void *y)
278 p=(const ModuleInfo **) x,
279 q=(const ModuleInfo **) y;
280 if (LocaleCompare((*p)->path,(*q)->path) == 0)
281 return(LocaleCompare((*p)->tag,(*q)->tag));
282 return(LocaleCompare((*p)->path,(*q)->path));
285 #if defined(__cplusplus) || defined(c_plusplus)
289 MagickExport const ModuleInfo **GetModuleInfoList(const char *pattern,
290 size_t *number_modules,ExceptionInfo *exception)
295 register const ModuleInfo
302 Allocate module list.
304 assert(pattern != (char *) NULL);
305 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",pattern);
306 assert(number_modules != (size_t *) NULL);
308 p=GetModuleInfo("*",exception);
309 if (p == (const ModuleInfo *) NULL)
310 return((const ModuleInfo **) NULL);
311 modules=(const ModuleInfo **) AcquireQuantumMemory((size_t)
312 GetNumberOfNodesInSplayTree(module_list)+1UL,sizeof(*modules));
313 if (modules == (const ModuleInfo **) NULL)
314 return((const ModuleInfo **) NULL);
316 Generate module list.
318 LockSemaphoreInfo(module_semaphore);
319 ResetSplayTreeIterator(module_list);
320 p=(const ModuleInfo *) GetNextValueInSplayTree(module_list);
321 for (i=0; p != (const ModuleInfo *) NULL; )
323 if ((p->stealth == MagickFalse) &&
324 (GlobExpression(p->tag,pattern,MagickFalse) != MagickFalse))
326 p=(const ModuleInfo *) GetNextValueInSplayTree(module_list);
328 UnlockSemaphoreInfo(module_semaphore);
329 qsort((void *) modules,(size_t) i,sizeof(*modules),ModuleInfoCompare);
330 modules[i]=(ModuleInfo *) NULL;
331 *number_modules=(size_t) i;
336 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
340 % G e t M o d u l e L i s t %
344 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
346 % GetModuleList() returns any image format modules that match the specified
349 % The format of the GetModuleList function is:
351 % char **GetModuleList(const char *pattern,const MagickModuleType type,
352 % size_t *number_modules,ExceptionInfo *exception)
354 % A description of each parameter follows:
356 % o pattern: Specifies a pointer to a text string containing a pattern.
358 % o type: choose from MagickImageCoderModule or MagickImageFilterModule.
360 % o number_modules: This integer returns the number of modules in the
363 % o exception: return any errors or warnings in this structure.
367 #if defined(__cplusplus) || defined(c_plusplus)
371 static int ModuleCompare(const void *x,const void *y)
379 return(LocaleCompare(*p,*q));
382 #if defined(__cplusplus) || defined(c_plusplus)
386 static inline int MagickReadDirectory(DIR *directory,struct dirent *entry,
387 struct dirent **result)
389 #if defined(MAGICKCORE_HAVE_READDIR_R)
390 return(readdir_r(directory,entry,result));
394 *result=readdir(directory);
399 MagickExport char **GetModuleList(const char *pattern,
400 const MagickModuleType type,size_t *number_modules,ExceptionInfo *exception)
404 filename[MaxTextExtent],
405 module_path[MaxTextExtent],
425 Locate all modules in the image coder or filter path.
429 case MagickImageCoderModule:
432 TagToCoderModuleName("magick",filename);
433 status=GetMagickModulePath(filename,MagickImageCoderModule,module_path,
437 case MagickImageFilterModule:
439 TagToFilterModuleName("analyze",filename);
440 status=GetMagickModulePath(filename,MagickImageFilterModule,module_path,
445 if (status == MagickFalse)
446 return((char **) NULL);
447 GetPathComponent(module_path,HeadPath,path);
449 modules=(char **) AcquireQuantumMemory((size_t) max_entries+1UL,
451 if (modules == (char **) NULL)
452 return((char **) NULL);
453 *modules=(char *) NULL;
454 directory=opendir(path);
455 if (directory == (DIR *) NULL)
457 modules=(char **) RelinquishMagickMemory(modules);
458 return((char **) NULL);
460 buffer=(struct dirent *) AcquireMagickMemory(sizeof(*buffer)+FILENAME_MAX+1);
461 if (buffer == (struct dirent *) NULL)
462 ThrowFatalException(ResourceLimitFatalError,"MemoryAllocationFailed");
464 while ((MagickReadDirectory(directory,buffer,&entry) == 0) &&
465 (entry != (struct dirent *) NULL))
467 status=GlobExpression(entry->d_name,ModuleGlobExpression,MagickFalse);
468 if (status == MagickFalse)
470 if (GlobExpression(entry->d_name,pattern,MagickFalse) == MagickFalse)
472 if (i >= (ssize_t) max_entries)
474 modules=(char **) NULL;
475 if (~max_entries > max_entries)
476 modules=(char **) ResizeQuantumMemory(modules,(size_t)
477 (max_entries << 1),sizeof(*modules));
479 if (modules == (char **) NULL)
483 Add new module name to list.
485 modules[i]=AcquireString((char *) NULL);
486 GetPathComponent(entry->d_name,BasePath,modules[i]);
487 if (LocaleNCompare("IM_MOD_",modules[i],7) == 0)
489 (void) CopyMagickString(modules[i],modules[i]+10,MaxTextExtent);
490 modules[i][strlen(modules[i])-1]='\0';
494 buffer=(struct dirent *) RelinquishMagickMemory(buffer);
495 (void) closedir(directory);
496 if (modules == (char **) NULL)
498 (void) ThrowMagickException(exception,GetMagickModule(),ConfigureError,
499 "MemoryAllocationFailed","`%s'",pattern);
500 return((char **) NULL);
502 qsort((void *) modules,(size_t) i,sizeof(*modules),ModuleCompare);
503 modules[i]=(char *) NULL;
504 *number_modules=(size_t) i;
509 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
513 % G e t M a g i c k M o d u l e P a t h %
517 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
519 % GetMagickModulePath() finds a module with the specified module type and
522 % The format of the GetMagickModulePath module is:
524 % MagickBooleanType GetMagickModulePath(const char *filename,
525 % MagickModuleType module_type,char *path,ExceptionInfo *exception)
527 % A description of each parameter follows:
529 % o filename: the module file name.
531 % o module_type: the module type: MagickImageCoderModule or
532 % MagickImageFilterModule.
534 % o path: the path associated with the filename.
536 % o exception: return any errors or warnings in this structure.
539 static MagickBooleanType GetMagickModulePath(const char *filename,
540 MagickModuleType module_type,char *path,ExceptionInfo *exception)
545 assert(filename != (const char *) NULL);
546 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",filename);
547 assert(path != (char *) NULL);
548 assert(exception != (ExceptionInfo *) NULL);
549 (void) CopyMagickString(path,filename,MaxTextExtent);
550 module_path=(char *) NULL;
553 case MagickImageCoderModule:
556 (void) LogMagickEvent(ModuleEvent,GetMagickModule(),
557 "Searching for coder module file \"%s\" ...",filename);
558 module_path=GetEnvironmentValue("MAGICK_CODER_MODULE_PATH");
559 #if defined(MAGICKCORE_CODER_PATH)
560 if (module_path == (char *) NULL)
561 module_path=AcquireString(MAGICKCORE_CODER_PATH);
565 case MagickImageFilterModule:
567 (void) LogMagickEvent(ModuleEvent,GetMagickModule(),
568 "Searching for filter module file \"%s\" ...",filename);
569 module_path=GetEnvironmentValue("MAGICK_CODER_FILTER_PATH");
570 #if defined(MAGICKCORE_FILTER_PATH)
571 if (module_path == (char *) NULL)
572 module_path=AcquireString(MAGICKCORE_FILTER_PATH);
577 if (module_path != (char *) NULL)
583 for (p=module_path-1; p != (char *) NULL; )
585 (void) CopyMagickString(path,p+1,MaxTextExtent);
586 q=strchr(path,DirectoryListSeparator);
587 if (q != (char *) NULL)
589 q=path+strlen(path)-1;
590 if ((q >= path) && (*q != *DirectorySeparator))
591 (void) ConcatenateMagickString(path,DirectorySeparator,MaxTextExtent);
592 (void) ConcatenateMagickString(path,filename,MaxTextExtent);
593 if (IsPathAccessible(path) != MagickFalse)
595 module_path=DestroyString(module_path);
598 p=strchr(p+1,DirectoryListSeparator);
600 module_path=DestroyString(module_path);
602 #if defined(MAGICKCORE_INSTALLED_SUPPORT)
604 #if defined(MAGICKCORE_CODER_PATH)
610 Search hard coded paths.
614 case MagickImageCoderModule:
617 directory=MAGICKCORE_CODER_PATH;
620 case MagickImageFilterModule:
622 directory=MAGICKCORE_FILTER_PATH;
626 (void) FormatLocaleString(path,MaxTextExtent,"%s%s",directory,filename);
627 if (IsPathAccessible(path) == MagickFalse)
629 ThrowFileException(exception,ConfigureWarning,
630 "UnableToOpenModuleFile",path);
636 #if defined(MAGICKCORE_WINDOWS_SUPPORT)
645 Locate path via registry key.
649 case MagickImageCoderModule:
652 registery_key="CoderModulesPath";
655 case MagickImageFilterModule:
657 registery_key="FilterModulesPath";
661 key_value=NTRegistryKeyLookup(registery_key);
662 if (key_value == (unsigned char *) NULL)
664 ThrowMagickException(exception,GetMagickModule(),ConfigureError,
665 "RegistryKeyLookupFailed","`%s'",registery_key);
668 (void) FormatLocaleString(path,MaxTextExtent,"%s%s%s",(char *) key_value,
669 DirectorySeparator,filename);
670 key_value=(unsigned char *) RelinquishMagickMemory(key_value);
671 if (IsPathAccessible(path) == MagickFalse)
673 ThrowFileException(exception,ConfigureWarning,
674 "UnableToOpenModuleFile",path);
681 #if !defined(MAGICKCORE_CODER_PATH) && !defined(MAGICKCORE_WINDOWS_SUPPORT)
682 # error MAGICKCORE_CODER_PATH or MAGICKCORE_WINDOWS_SUPPORT must be defined when MAGICKCORE_INSTALLED_SUPPORT is defined
689 home=GetEnvironmentValue("MAGICK_HOME");
690 if (home != (char *) NULL)
695 #if !defined(MAGICKCORE_POSIX_SUPPORT)
696 (void) FormatLocaleString(path,MaxTextExtent,"%s%s%s",home,
697 DirectorySeparator,filename);
704 case MagickImageCoderModule:
707 directory=MAGICKCORE_CODER_RELATIVE_PATH;
710 case MagickImageFilterModule:
712 directory=MAGICKCORE_FILTER_RELATIVE_PATH;
716 (void) FormatLocaleString(path,MaxTextExtent,"%s/lib/%s/%s",home,
719 home=DestroyString(home);
720 if (IsPathAccessible(path) != MagickFalse)
724 if (*GetClientPath() != '\0')
727 Search based on executable directory.
729 #if !defined(MAGICKCORE_POSIX_SUPPORT)
730 (void) FormatLocaleString(path,MaxTextExtent,"%s%s%s",GetClientPath(),
731 DirectorySeparator,filename);
734 prefix[MaxTextExtent];
741 case MagickImageCoderModule:
747 case MagickImageFilterModule:
753 (void) CopyMagickString(prefix,GetClientPath(),MaxTextExtent);
754 ChopPathComponents(prefix,1);
755 (void) FormatLocaleString(path,MaxTextExtent,"%s/lib/%s/%s/%s",prefix,
756 MAGICKCORE_MODULES_RELATIVE_PATH,directory,filename);
758 if (IsPathAccessible(path) != MagickFalse)
761 #if defined(MAGICKCORE_WINDOWS_SUPPORT)
766 if ((NTGetModulePath("CORE_RL_magick_.dll",path) != MagickFalse) ||
767 (NTGetModulePath("CORE_DB_magick_.dll",path) != MagickFalse) ||
768 (NTGetModulePath("Magick.dll",path) != MagickFalse))
770 (void) ConcatenateMagickString(path,DirectorySeparator,MaxTextExtent);
771 (void) ConcatenateMagickString(path,filename,MaxTextExtent);
772 if (IsPathAccessible(path) != MagickFalse)
781 home=GetEnvironmentValue("HOME");
782 if (home == (char *) NULL)
783 home=GetEnvironmentValue("USERPROFILE");
784 if (home != (char *) NULL)
787 Search $HOME/.config/ImageMagick.
789 (void) FormatLocaleString(path,MaxTextExtent,
790 "%s%s.config%sImageMagick%s%s",home,DirectorySeparator,
791 DirectorySeparator,DirectorySeparator,filename);
792 home=DestroyString(home);
793 if (IsPathAccessible(path) != MagickFalse)
798 Search current directory.
800 if (IsPathAccessible(path) != MagickFalse)
802 if (exception->severity < ConfigureError)
803 ThrowFileException(exception,ConfigureWarning,"UnableToOpenModuleFile",
810 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
814 % I s M o d u l e T r e e I n s t a n t i a t e d %
818 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
820 % IsModuleTreeInstantiated() determines if the module tree is instantiated.
821 % If not, it instantiates the tree and returns it.
823 % The format of the IsModuleTreeInstantiated() method is:
825 % IsModuleTreeInstantiated(Exceptioninfo *exception)
827 % A description of each parameter follows.
829 % o exception: return any errors or warnings in this structure.
833 static void *DestroyModuleNode(void *module_info)
841 exception=AcquireExceptionInfo();
842 p=(ModuleInfo *) module_info;
843 if (UnregisterModule(p,exception) == MagickFalse)
844 CatchException(exception);
845 if (p->tag != (char *) NULL)
846 p->tag=DestroyString(p->tag);
847 if (p->path != (char *) NULL)
848 p->path=DestroyString(p->path);
849 exception=DestroyExceptionInfo(exception);
850 return(RelinquishMagickMemory(p));
853 static MagickBooleanType IsModuleTreeInstantiated(
854 ExceptionInfo *magick_unused(exception))
856 if (module_list == (SplayTreeInfo *) NULL)
858 if (module_semaphore == (SemaphoreInfo *) NULL)
859 ActivateSemaphoreInfo(&module_semaphore);
860 LockSemaphoreInfo(module_semaphore);
861 if (module_list == (SplayTreeInfo *) NULL)
869 module_list=NewSplayTree(CompareSplayTreeString,
870 (void *(*)(void *)) NULL,DestroyModuleNode);
871 if (module_list == (SplayTreeInfo *) NULL)
872 ThrowFatalException(ResourceLimitFatalError,
873 "MemoryAllocationFailed");
874 module_info=AcquireModuleInfo((const char *) NULL,"[boot-strap]");
875 module_info->stealth=MagickTrue;
876 status=AddValueToSplayTree(module_list,module_info->tag,module_info);
877 if (status == MagickFalse)
878 ThrowFatalException(ResourceLimitFatalError,
879 "MemoryAllocationFailed");
880 if (lt_dlinit() != 0)
881 ThrowFatalException(ModuleFatalError,
882 "UnableToInitializeModuleLoader");
884 UnlockSemaphoreInfo(module_semaphore);
886 return(module_list != (SplayTreeInfo *) NULL ? MagickTrue : MagickFalse);
890 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
894 % I n v o k e D y n a m i c I m a g e F i l t e r %
898 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
900 % InvokeDynamicImageFilter() invokes a dynamic image filter.
902 % The format of the InvokeDynamicImageFilter module is:
904 % MagickBooleanType InvokeDynamicImageFilter(const char *tag,Image **image,
905 % const int argc,const char **argv,ExceptionInfo *exception)
907 % A description of each parameter follows:
909 % o tag: a character string that represents the name of the particular
912 % o image: the image.
914 % o argc: a pointer to an integer describing the number of elements in the
917 % o argv: a pointer to a text array containing the command line arguments.
919 % o exception: return any errors or warnings in this structure.
922 MagickExport MagickBooleanType InvokeDynamicImageFilter(const char *tag,
923 Image **images,const int argc,const char **argv,ExceptionInfo *exception)
944 assert(images != (Image **) NULL);
945 assert((*images)->signature == MagickSignature);
946 if ((*images)->debug != MagickFalse)
947 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
948 (*images)->filename);
949 #if !defined(MAGICKCORE_BUILD_MODULES)
954 status=InvokeStaticImageFilter(tag,images,argc,argv,exception);
955 if (status != MagickFalse)
959 rights=ReadPolicyRights;
960 if (IsRightsAuthorized(FilterPolicyDomain,rights,tag) == MagickFalse)
963 (void) ThrowMagickException(exception,GetMagickModule(),PolicyError,
964 "NotAuthorized","`%s'",tag);
967 TagToFilterModuleName(tag,name);
968 status=GetMagickModulePath(name,MagickImageFilterModule,path,exception);
969 if (status == MagickFalse)
971 (void) ThrowMagickException(exception,GetMagickModule(),ModuleError,
972 "UnableToLoadModule","'%s': %s",name,path);
978 handle=(ModuleHandle) lt_dlopen(path);
979 if (handle == (ModuleHandle) NULL)
981 (void) ThrowMagickException(exception,GetMagickModule(),ModuleError,
982 "UnableToLoadModule","'%s': %s",name,lt_dlerror());
988 #if !defined(MAGICKCORE_NAMESPACE_PREFIX)
989 (void) FormatLocaleString(name,MaxTextExtent,"%sImage",tag);
991 (void) FormatLocaleString(name,MaxTextExtent,"%s%sImage",
992 MAGICKCORE_NAMESPACE_PREFIX,tag);
997 ClearMagickException(exception);
998 image_filter=(ImageFilterHandler *) lt_dlsym(handle,name);
999 if (image_filter == (ImageFilterHandler *) NULL)
1000 (void) ThrowMagickException(exception,GetMagickModule(),ModuleError,
1001 "UnableToLoadModule","'%s': %s",name,lt_dlerror());
1007 if ((*images)->debug != MagickFalse)
1008 (void) LogMagickEvent(ModuleEvent,GetMagickModule(),
1009 "Invoking \"%s\" dynamic image filter",tag);
1010 signature=image_filter(images,argc,argv,exception);
1011 if ((*images)->debug != MagickFalse)
1012 (void) LogMagickEvent(ModuleEvent,GetMagickModule(),"\"%s\" completes",
1014 if (signature != MagickImageFilterSignature)
1015 (void) ThrowMagickException(exception,GetMagickModule(),ModuleError,
1016 "ImageFilterSignatureMismatch","'%s': %8lx != %8lx",tag,
1017 (unsigned long) signature,(unsigned long) MagickImageFilterSignature);
1022 if (lt_dlclose(handle) != 0)
1023 (void) ThrowMagickException(exception,GetMagickModule(),ModuleWarning,
1024 "UnableToCloseModule","'%s': %s",name,lt_dlerror());
1025 return(exception->severity < ErrorException ? MagickTrue : MagickFalse);
1029 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1033 % L i s t M o d u l e I n f o %
1037 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1039 % ListModuleInfo() lists the module info to a file.
1041 % The format of the ListModuleInfo module is:
1043 % MagickBooleanType ListModuleInfo(FILE *file,ExceptionInfo *exception)
1045 % A description of each parameter follows.
1047 % o file: An pointer to a FILE.
1049 % o exception: return any errors or warnings in this structure.
1052 MagickExport MagickBooleanType ListModuleInfo(FILE *file,
1053 ExceptionInfo *exception)
1056 filename[MaxTextExtent],
1057 module_path[MaxTextExtent],
1059 path[MaxTextExtent];
1067 if (file == (const FILE *) NULL)
1072 modules=GetModuleList("*",MagickImageCoderModule,&number_modules,exception);
1073 if (modules == (char **) NULL)
1074 return(MagickFalse);
1075 TagToCoderModuleName("magick",filename);
1076 (void) GetMagickModulePath(filename,MagickImageCoderModule,module_path,
1078 GetPathComponent(module_path,HeadPath,path);
1079 (void) FormatLocaleFile(file,"\nPath: %s\n\n",path);
1080 (void) FormatLocaleFile(file,"Image Coder\n");
1081 (void) FormatLocaleFile(file,
1082 "-------------------------------------------------"
1083 "------------------------------\n");
1084 for (i=0; i < (ssize_t) number_modules; i++)
1086 (void) FormatLocaleFile(file,"%s",modules[i]);
1087 (void) FormatLocaleFile(file,"\n");
1089 (void) fflush(file);
1091 Relinquish resources.
1093 for (i=0; i < (ssize_t) number_modules; i++)
1094 modules[i]=DestroyString(modules[i]);
1095 modules=(char **) RelinquishMagickMemory(modules);
1099 modules=GetModuleList("*",MagickImageFilterModule,&number_modules,exception);
1100 if (modules == (char **) NULL)
1101 return(MagickFalse);
1102 TagToFilterModuleName("analyze",filename);
1103 (void) GetMagickModulePath(filename,MagickImageFilterModule,module_path,
1105 GetPathComponent(module_path,HeadPath,path);
1106 (void) FormatLocaleFile(file,"\nPath: %s\n\n",path);
1107 (void) FormatLocaleFile(file,"Image Filter\n");
1108 (void) FormatLocaleFile(file,
1109 "-------------------------------------------------"
1110 "------------------------------\n");
1111 for (i=0; i < (ssize_t) number_modules; i++)
1113 (void) FormatLocaleFile(file,"%s",modules[i]);
1114 (void) FormatLocaleFile(file,"\n");
1116 (void) fflush(file);
1118 Relinquish resources.
1120 for (i=0; i < (ssize_t) number_modules; i++)
1121 modules[i]=DestroyString(modules[i]);
1122 modules=(char **) RelinquishMagickMemory(modules);
1127 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1131 + M o d u l e C o m p o n e n t G e n e s i s %
1135 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1137 % ModuleComponentGenesis() instantiates the module component.
1139 % The format of the ModuleComponentGenesis method is:
1141 % MagickBooleanType ModuleComponentGenesis(void)
1144 MagickPrivate MagickBooleanType ModuleComponentGenesis(void)
1152 if (module_semaphore == (SemaphoreInfo *) NULL)
1153 module_semaphore=AcquireSemaphoreInfo();
1154 exception=AcquireExceptionInfo();
1155 status=IsModuleTreeInstantiated(exception);
1156 exception=DestroyExceptionInfo(exception);
1161 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1165 + M o d u l e C o m p o n e n t T e r m i n u s %
1169 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1171 % ModuleComponentTerminus() destroys the module component.
1173 % The format of the ModuleComponentTerminus method is:
1175 % ModuleComponentTerminus(void)
1178 MagickPrivate void ModuleComponentTerminus(void)
1180 if (module_semaphore == (SemaphoreInfo *) NULL)
1181 ActivateSemaphoreInfo(&module_semaphore);
1182 DestroyModuleList();
1183 RelinquishSemaphoreInfo(&module_semaphore);
1187 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1191 % O p e n M o d u l e %
1195 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1197 % OpenModule() loads a module, and invokes its registration module. It
1198 % returns MagickTrue on success, and MagickFalse if there is an error.
1200 % The format of the OpenModule module is:
1202 % MagickBooleanType OpenModule(const char *module,ExceptionInfo *exception)
1204 % A description of each parameter follows:
1206 % o module: a character string that indicates the module to load.
1208 % o exception: return any errors or warnings in this structure.
1211 MagickPrivate MagickBooleanType OpenModule(const char *module,
1212 ExceptionInfo *exception)
1215 filename[MaxTextExtent],
1216 module_name[MaxTextExtent],
1217 name[MaxTextExtent],
1218 path[MaxTextExtent];
1229 register const CoderInfo
1236 Assign module name from alias.
1238 assert(module != (const char *) NULL);
1239 module_info=(ModuleInfo *) GetModuleInfo(module,exception);
1240 if (module_info != (ModuleInfo *) NULL)
1242 (void) CopyMagickString(module_name,module,MaxTextExtent);
1243 p=GetCoderInfo(module,exception);
1244 if (p != (CoderInfo *) NULL)
1245 (void) CopyMagickString(module_name,p->name,MaxTextExtent);
1246 if (GetValueFromSplayTree(module_list,module_name) != (void *) NULL)
1247 return(MagickTrue); /* module already opened, return */
1251 handle=(ModuleHandle) NULL;
1252 TagToCoderModuleName(module_name,filename);
1253 (void) LogMagickEvent(ModuleEvent,GetMagickModule(),
1254 "Searching for module \"%s\" using filename \"%s\"",module_name,filename);
1256 status=GetMagickModulePath(filename,MagickImageCoderModule,path,exception);
1257 if (status == MagickFalse)
1258 return(MagickFalse);
1262 (void) LogMagickEvent(ModuleEvent,GetMagickModule(),
1263 "Opening module at path \"%s\"",path);
1264 handle=(ModuleHandle) lt_dlopen(path);
1265 if (handle == (ModuleHandle) NULL)
1267 (void) ThrowMagickException(exception,GetMagickModule(),ModuleError,
1268 "UnableToLoadModule","'%s': %s",path,lt_dlerror());
1269 return(MagickFalse);
1274 module_info=AcquireModuleInfo(path,module_name);
1275 module_info->handle=handle;
1276 if (RegisterModule(module_info,exception) == (ModuleInfo *) NULL)
1277 return(MagickFalse);
1279 Define RegisterFORMATImage method.
1281 TagToModuleName(module_name,"Register%sImage",name);
1282 module_info->register_module=(size_t (*)(void)) lt_dlsym(handle,name);
1283 if (module_info->register_module == (size_t (*)(void)) NULL)
1285 (void) ThrowMagickException(exception,GetMagickModule(),ModuleError,
1286 "UnableToRegisterImageFormat","'%s': %s",module_name,lt_dlerror());
1287 return(MagickFalse);
1289 (void) LogMagickEvent(ModuleEvent,GetMagickModule(),
1290 "Method \"%s\" in module \"%s\" at address %p",name,module_name,
1291 (void *) module_info->register_module);
1293 Define UnregisterFORMATImage method.
1295 TagToModuleName(module_name,"Unregister%sImage",name);
1296 module_info->unregister_module=(void (*)(void)) lt_dlsym(handle,name);
1297 if (module_info->unregister_module == (void (*)(void)) NULL)
1299 (void) ThrowMagickException(exception,GetMagickModule(),ModuleError,
1300 "UnableToRegisterImageFormat","'%s': %s",module_name,lt_dlerror());
1301 return(MagickFalse);
1303 (void) LogMagickEvent(ModuleEvent,GetMagickModule(),
1304 "Method \"%s\" in module \"%s\" at address %p",name,module_name,
1305 (void *) module_info->unregister_module);
1306 signature=module_info->register_module();
1307 if (signature != MagickImageCoderSignature)
1309 (void) ThrowMagickException(exception,GetMagickModule(),ModuleError,
1310 "ImageCoderSignatureMismatch","'%s': %8lx != %8lx",module_name,
1311 (unsigned long) signature,(unsigned long) MagickImageCoderSignature);
1312 return(MagickFalse);
1318 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1322 % O p e n M o d u l e s %
1326 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1328 % OpenModules() loads all available modules.
1330 % The format of the OpenModules module is:
1332 % MagickBooleanType OpenModules(ExceptionInfo *exception)
1334 % A description of each parameter follows:
1336 % o exception: return any errors or warnings in this structure.
1339 MagickPrivate MagickBooleanType OpenModules(ExceptionInfo *exception)
1353 (void) GetMagickInfo((char *) NULL,exception);
1355 modules=GetModuleList("*",MagickImageCoderModule,&number_modules,exception);
1356 if (modules == (char **) NULL)
1357 return(MagickFalse);
1358 for (i=0; i < (ssize_t) number_modules; i++)
1359 (void) OpenModule(modules[i],exception);
1361 Relinquish resources.
1363 for (i=0; i < (ssize_t) number_modules; i++)
1364 modules[i]=DestroyString(modules[i]);
1365 modules=(char **) RelinquishMagickMemory(modules);
1370 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1374 % R e g i s t e r M o d u l e %
1378 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1380 % RegisterModule() adds an entry to the module list. It returns a pointer to
1381 % the registered entry on success.
1383 % The format of the RegisterModule module is:
1385 % ModuleInfo *RegisterModule(const ModuleInfo *module_info,
1386 % ExceptionInfo *exception)
1388 % A description of each parameter follows:
1390 % o info: a pointer to the registered entry is returned.
1392 % o module_info: a pointer to the ModuleInfo structure to register.
1394 % o exception: return any errors or warnings in this structure.
1397 static const ModuleInfo *RegisterModule(const ModuleInfo *module_info,
1398 ExceptionInfo *exception)
1403 assert(module_info != (ModuleInfo *) NULL);
1404 assert(module_info->signature == MagickSignature);
1405 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",module_info->tag);
1406 if (module_list == (SplayTreeInfo *) NULL)
1407 return((const ModuleInfo *) NULL);
1408 status=AddValueToSplayTree(module_list,module_info->tag,module_info);
1409 if (status == MagickFalse)
1410 (void) ThrowMagickException(exception,GetMagickModule(),ResourceLimitError,
1411 "MemoryAllocationFailed","`%s'",module_info->tag);
1412 return(module_info);
1416 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1420 % T a g T o C o d e r M o d u l e N a m e %
1424 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1426 % TagToCoderModuleName() munges a module tag and obtains the filename of the
1427 % corresponding module.
1429 % The format of the TagToCoderModuleName module is:
1431 % char *TagToCoderModuleName(const char *tag,char *name)
1433 % A description of each parameter follows:
1435 % o tag: a character string representing the module tag.
1437 % o name: return the module name here.
1440 static void TagToCoderModuleName(const char *tag,char *name)
1442 assert(tag != (char *) NULL);
1443 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",tag);
1444 assert(name != (char *) NULL);
1445 #if defined(MAGICKCORE_LTDL_DELEGATE)
1446 (void) FormatLocaleString(name,MaxTextExtent,"%s.la",tag);
1447 (void) LocaleLower(name);
1449 #if defined(MAGICKCORE_WINDOWS_SUPPORT)
1450 if (LocaleNCompare("IM_MOD_",tag,7) == 0)
1451 (void) CopyMagickString(name,tag,MaxTextExtent);
1455 (void) FormatLocaleString(name,MaxTextExtent,"IM_MOD_DB_%s_.dll",tag);
1457 (void) FormatLocaleString(name,MaxTextExtent,"IM_MOD_RL_%s_.dll",tag);
1465 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1469 % T a g T o F i l t e r M o d u l e N a m e %
1473 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1475 % TagToFilterModuleName() munges a module tag and returns the filename of the
1476 % corresponding filter module.
1478 % The format of the TagToFilterModuleName module is:
1480 % void TagToFilterModuleName(const char *tag,char name)
1482 % A description of each parameter follows:
1484 % o tag: a character string representing the module tag.
1486 % o name: return the filter name here.
1489 static void TagToFilterModuleName(const char *tag,char *name)
1491 assert(tag != (char *) NULL);
1492 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",tag);
1493 assert(name != (char *) NULL);
1494 #if !defined(MAGICKCORE_LTDL_DELEGATE)
1495 (void) FormatLocaleString(name,MaxTextExtent,"%s.dll",tag);
1497 (void) FormatLocaleString(name,MaxTextExtent,"%s.la",tag);
1502 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1506 % T a g T o M o d u l e N a m e %
1510 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1512 % TagToModuleName() munges the module tag name and returns an upper-case tag
1513 % name as the input string, and a user-provided format.
1515 % The format of the TagToModuleName module is:
1517 % TagToModuleName(const char *tag,const char *format,char *module)
1519 % A description of each parameter follows:
1521 % o tag: the module tag.
1523 % o format: a sprintf-compatible format string containing %s where the
1524 % upper-case tag name is to be inserted.
1526 % o module: pointer to a destination buffer for the formatted result.
1529 static void TagToModuleName(const char *tag,const char *format,char *module)
1532 name[MaxTextExtent];
1534 assert(tag != (const char *) NULL);
1535 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",tag);
1536 assert(format != (const char *) NULL);
1537 assert(module != (char *) NULL);
1538 (void) CopyMagickString(name,tag,MaxTextExtent);
1540 #if !defined(MAGICKCORE_NAMESPACE_PREFIX)
1541 (void) FormatLocaleString(module,MaxTextExtent,format,name);
1545 prefix_format[MaxTextExtent];
1547 (void) FormatLocaleString(prefix_format,MaxTextExtent,"%s%s",
1548 MAGICKCORE_NAMESPACE_PREFIX,format);
1549 (void) FormatLocaleString(module,MaxTextExtent,prefix_format,name);
1555 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1559 % U n r e g i s t e r M o d u l e %
1563 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1565 % UnregisterModule() unloads a module, and invokes its de-registration module.
1566 % Returns MagickTrue on success, and MagickFalse if there is an error.
1568 % The format of the UnregisterModule module is:
1570 % MagickBooleanType UnregisterModule(const ModuleInfo *module_info,
1571 % ExceptionInfo *exception)
1573 % A description of each parameter follows:
1575 % o module_info: the module info.
1577 % o exception: return any errors or warnings in this structure.
1580 static MagickBooleanType UnregisterModule(const ModuleInfo *module_info,
1581 ExceptionInfo *exception)
1584 Locate and execute UnregisterFORMATImage module.
1586 assert(module_info != (const ModuleInfo *) NULL);
1587 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",module_info->tag);
1588 assert(exception != (ExceptionInfo *) NULL);
1589 if (module_info->unregister_module == NULL)
1591 module_info->unregister_module();
1592 if (lt_dlclose((ModuleHandle) module_info->handle) != 0)
1594 (void) ThrowMagickException(exception,GetMagickModule(),ModuleWarning,
1595 "UnableToCloseModule","'%s': %s",module_info->tag,lt_dlerror());
1596 return(MagickFalse);
1602 #if !defined(MAGICKCORE_BUILD_MODULES)
1604 analyzeImage(Image **,const int,const char **,ExceptionInfo *);
1607 MagickExport MagickBooleanType ListModuleInfo(FILE *magick_unused(file),
1608 ExceptionInfo *magick_unused(exception))
1613 MagickExport MagickBooleanType InvokeDynamicImageFilter(const char *tag,
1614 Image **image,const int argc,const char **argv,ExceptionInfo *exception)
1619 assert(image != (Image **) NULL);
1620 assert((*image)->signature == MagickSignature);
1621 if ((*image)->debug != MagickFalse)
1622 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",(*image)->filename);
1623 rights=ReadPolicyRights;
1624 if (IsRightsAuthorized(FilterPolicyDomain,rights,tag) == MagickFalse)
1627 (void) ThrowMagickException(exception,GetMagickModule(),PolicyError,
1628 "NotAuthorized","`%s'",tag);
1629 return(MagickFalse);
1631 #if defined(MAGICKCORE_BUILD_MODULES)
1641 image_filter=(ImageFilterHandler *) NULL;
1642 if (LocaleCompare("analyze",tag) == 0)
1643 image_filter=(ImageFilterHandler *) analyzeImage;
1644 if (image_filter == (ImageFilterHandler *) NULL)
1645 (void) ThrowMagickException(exception,GetMagickModule(),ModuleError,
1646 "UnableToLoadModule","`%s'",tag);
1652 if ((*image)->debug != MagickFalse)
1653 (void) LogMagickEvent(CoderEvent,GetMagickModule(),
1654 "Invoking \"%s\" static image filter",tag);
1655 signature=image_filter(image,argc,argv,exception);
1656 if ((*image)->debug != MagickFalse)
1657 (void) LogMagickEvent(CoderEvent,GetMagickModule(),"\"%s\" completes",
1659 if (signature != MagickImageFilterSignature)
1661 (void) ThrowMagickException(exception,GetMagickModule(),ModuleError,
1662 "ImageFilterSignatureMismatch","'%s': %8lx != %8lx",tag,
1663 (unsigned long) signature,(unsigned long)
1664 MagickImageFilterSignature);
1665 return(MagickFalse);