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magick.c
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% M M AAA GGGG IIIII CCCC K K %
% MM MM A A G I C K K %
% M M M AAAAA G GGG I C KKK %
% M M A A G G I C K K %
% M M A A GGGG IIIII CCCC K K %
% %
% %
% Methods to Read or List ImageMagick Image formats %
% %
% Software Design %
% Bob Friesenhahn %
% Cristy %
% November 1998 %
% %
% %
% Copyright @ 1999 ImageMagick Studio LLC, a non-profit organization %
% dedicated to making software imaging solutions freely available. %
% %
% You may not use this file except in compliance with the License. You may %
% obtain a copy of the License at %
% %
% https://imagemagick.org/script/license.php %
% %
% Unless required by applicable law or agreed to in writing, software %
% distributed under the License is distributed on an "AS IS" BASIS, %
% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. %
% See the License for the specific language governing permissions and %
% limitations under the License. %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%
*/
␌
/*
Include declarations.
*/
#include "MagickCore/studio.h"
#include "MagickCore/annotate-private.h"
#include "MagickCore/blob.h"
#include "MagickCore/blob-private.h"
#include "MagickCore/cache.h"
#include "MagickCore/cache-private.h"
#include "MagickCore/coder-private.h"
#include "MagickCore/client.h"
#include "MagickCore/color-private.h"
#include "MagickCore/configure-private.h"
#include "MagickCore/constitute-private.h"
#include "MagickCore/delegate-private.h"
#include "MagickCore/draw.h"
#include "MagickCore/exception.h"
#include "MagickCore/exception-private.h"
#include "MagickCore/locale-private.h"
#include "MagickCore/log-private.h"
#include "MagickCore/magic-private.h"
#include "MagickCore/magick.h"
#include "MagickCore/magick-private.h"
#include "MagickCore/memory_.h"
#include "MagickCore/mime-private.h"
#include "MagickCore/monitor-private.h"
#include "MagickCore/module.h"
#include "MagickCore/module-private.h"
#include "MagickCore/mutex.h"
#include "MagickCore/nt-base-private.h"
#include "MagickCore/nt-feature.h"
#include "MagickCore/opencl-private.h"
#include "MagickCore/option-private.h"
#include "MagickCore/random-private.h"
#include "MagickCore/registry.h"
#include "MagickCore/registry-private.h"
#include "MagickCore/resource_.h"
#include "MagickCore/resource-private.h"
#include "MagickCore/policy.h"
#include "MagickCore/policy-private.h"
#include "MagickCore/mutex.h"
#include "MagickCore/semaphore.h"
#include "MagickCore/semaphore-private.h"
#include "MagickCore/signature-private.h"
#include "MagickCore/splay-tree.h"
#include "MagickCore/static.h"
#include "MagickCore/string_.h"
#include "MagickCore/string-private.h"
#include "MagickCore/thread_.h"
#include "MagickCore/thread-private.h"
#include "MagickCore/timer-private.h"
#include "MagickCore/type-private.h"
#include "MagickCore/token.h"
#include "MagickCore/utility.h"
#include "MagickCore/utility-private.h"
#include "MagickCore/xwindow-private.h"
␌
/*
Define declarations.
*/
#if !defined(SIG_DFL)
# define SIG_DFL ((SignalHandler *) 0)
#endif
#if !defined(SIG_ERR)
# define SIG_ERR ((SignalHandler *) -1)
#endif
#if !defined(SIGMAX)
#define SIGMAX 64
#endif
␌
/*
Typedef declarations.
*/
typedef void SignalHandler(int);
␌
/*
Global declarations.
*/
static SemaphoreInfo
*magick_semaphore = (SemaphoreInfo *) NULL;
static SignalHandler
*signal_handlers[SIGMAX] = { (SignalHandler *) NULL };
static SplayTreeInfo
*magick_list = (SplayTreeInfo *) NULL;
static volatile MagickBooleanType
magickcore_instantiated = MagickFalse,
magickcore_signal_in_progress = MagickFalse,
magick_list_initialized = MagickFalse;
static int
magick_precision = 0;
␌
/*
Forward declarations.
*/
static MagickBooleanType
IsMagickTreeInstantiated(ExceptionInfo *);
␌
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% A c q u i r e M a g i c k I n f o %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% AcquireMagickInfo() allocates a MagickInfo structure and initializes the
% members to default values.
%
% The format of the AcquireMagickInfo method is:
%
% MagickInfo *AcquireMagickInfo(const char *magick_module,
% const char *name,const char *description)
%
% A description of each parameter follows:
%
% o magick_module: a character string that represents the module associated
% with the MagickInfo structure.
%
% o name: a character string that represents the image format associated
% with the MagickInfo structure.
%
% o description: a character string that represents the image format
% associated with the MagickInfo structure.
%
*/
MagickExport MagickInfo *AcquireMagickInfo(const char *magick_module,
const char *name,const char *description)
{
MagickInfo
*magick_info;
assert(magick_module != (const char *) NULL);
assert(name != (const char *) NULL);
assert(description != (const char *) NULL);
if (IsEventLogging() != MagickFalse)
(void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",name);
magick_info=(MagickInfo *) AcquireCriticalMemory(sizeof(*magick_info));
(void) memset(magick_info,0,sizeof(*magick_info));
magick_info->magick_module=ConstantString(magick_module);
magick_info->name=ConstantString(name);
magick_info->description=ConstantString(description);
magick_info->flags=CoderAdjoinFlag | CoderBlobSupportFlag |
CoderDecoderThreadSupportFlag | CoderEncoderThreadSupportFlag |
CoderUseExtensionFlag;
magick_info->signature=MagickCoreSignature;
return(magick_info);
}
␌
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
+ G e t I m a g e D e c o d e r %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% GetImageDecoder() returns the image decoder.
%
% The format of the GetImageDecoder method is:
%
% DecodeImageHandler *GetImageDecoder(const MagickInfo *magick_info)
%
% A description of each parameter follows:
%
% o magick_info: The magick info.
%
*/
MagickExport DecodeImageHandler *GetImageDecoder(const MagickInfo *magick_info)
{
if (magick_info == (MagickInfo *) NULL)
return((DecodeImageHandler *) NULL);
assert(magick_info->signature == MagickCoreSignature);
return(magick_info->decoder);
}
␌
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
+ G e t I m a g e E n c o d e r %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% GetImageEncoder() returns the image encoder.
%
% The format of the GetImageEncoder method is:
%
% EncodeImageHandler *GetImageEncoder(const MagickInfo *magick_info)
%
% A description of each parameter follows:
%
% o magick_info: The magick info.
%
*/
MagickExport EncodeImageHandler *GetImageEncoder(const MagickInfo *magick_info)
{
if (magick_info == (MagickInfo *) NULL)
return((EncodeImageHandler *) NULL);
assert(magick_info->signature == MagickCoreSignature);
return(magick_info->encoder);
}
␌
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
+ G e t I m a g e M a g i c k %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% GetImageMagick() searches for an image format that matches the specified
% magick string. If one is found, MagickTrue is returned otherwise
% MagickFalse.
%
% The format of the GetImageMagick method is:
%
% MagickBooleanType GetImageMagick(const unsigned char *magick,
% const size_t length,char *format)
%
% A description of each parameter follows:
%
% o magick: the image format we are searching for.
%
% o length: the length of the binary string.
%
% o format: the image format as determined by the magick bytes.
%
*/
MagickExport MagickBooleanType GetImageMagick(const unsigned char *magick,
const size_t length,char *format)
{
ExceptionInfo
*exception;
MagickBooleanType
status;
const MagickInfo
*p;
assert(magick != (const unsigned char *) NULL);
if (IsEventLogging() != MagickFalse)
(void) LogMagickEvent(TraceEvent,GetMagickModule(),"...");
exception=AcquireExceptionInfo();
p=GetMagickInfo("*",exception);
exception=DestroyExceptionInfo(exception);
if (p == (const MagickInfo *) NULL)
return(MagickFalse);
status=MagickFalse;
LockSemaphoreInfo(magick_semaphore);
ResetSplayTreeIterator(magick_list);
p=(const MagickInfo *) GetNextValueInSplayTree(magick_list);
while (p != (const MagickInfo *) NULL)
{
if ((p->magick != (IsImageFormatHandler *) NULL) &&
(p->magick(magick,length) != 0))
{
status=MagickTrue;
(void) CopyMagickString(format,p->name,MagickPathExtent);
break;
}
p=(const MagickInfo *) GetNextValueInSplayTree(magick_list);
}
UnlockSemaphoreInfo(magick_semaphore);
return(status);
}
␌
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
+ G e t M a g i c k A d j o i n %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% GetMagickAdjoin() returns MagickTrue if the magick adjoin is MagickTrue.
%
% The format of the GetMagickAdjoin method is:
%
% MagickBooleanType GetMagickAdjoin(const MagickInfo *magick_info)
%
% A description of each parameter follows:
%
% o magick_info: The magick info.
%
*/
MagickExport MagickBooleanType GetMagickAdjoin(const MagickInfo *magick_info)
{
assert(magick_info != (MagickInfo *) NULL);
assert(magick_info->signature == MagickCoreSignature);
return(((magick_info->flags & CoderAdjoinFlag) == 0) ? MagickFalse :
MagickTrue);
}
␌
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
+ G e t M a g i c k B l o b S u p p o r t %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% GetMagickBlobSupport() returns MagickTrue if the magick supports blobs.
%
% The format of the GetMagickBlobSupport method is:
%
% MagickBooleanType GetMagickBlobSupport(const MagickInfo *magick_info)
%
% A description of each parameter follows:
%
% o magick_info: The magick info.
%
*/
MagickExport MagickBooleanType GetMagickBlobSupport(
const MagickInfo *magick_info)
{
assert(magick_info != (MagickInfo *) NULL);
assert(magick_info->signature == MagickCoreSignature);
return(((magick_info->flags & CoderBlobSupportFlag) == 0) ? MagickFalse :
MagickTrue);
}
␌
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
+ G e t M a g i c k D e c o d e r S e e k a b l e S t r e a m %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% GetMagickDecoderSeekableStream() returns MagickTrue if the magick supports a
% seekable stream in the decoder.
%
% The format of the GetMagickDecoderSeekableStream method is:
%
% MagickBooleanType GetMagickDecoderSeekableStream(
% const MagickInfo *magick_info)
%
% A description of each parameter follows:
%
% o magick_info: The magick info.
%
*/
MagickExport MagickBooleanType GetMagickDecoderSeekableStream(
const MagickInfo *magick_info)
{
assert(magick_info != (MagickInfo *) NULL);
assert(magick_info->signature == MagickCoreSignature);
if ((magick_info->flags & CoderDecoderSeekableStreamFlag) == 0)
return(MagickFalse);
return(MagickTrue);
}
␌
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
+ G e t M a g i c k D e c o d e r T h r e a d S u p p o r t %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% GetMagickDecoderThreadSupport() returns MagickTrue if the decoder supports
% threads.
%
% The format of the GetMagickDecoderThreadSupport method is:
%
% MagickStatusType GetMagickDecoderThreadSupport(
% const MagickInfo *magick_info)
%
% A description of each parameter follows:
%
% o magick_info: The magick info.
%
*/
MagickExport MagickBooleanType GetMagickDecoderThreadSupport(
const MagickInfo *magick_info)
{
assert(magick_info != (MagickInfo *) NULL);
assert(magick_info->signature == MagickCoreSignature);
return(((magick_info->flags & CoderDecoderThreadSupportFlag) == 0) ?
MagickFalse : MagickTrue);
}
␌
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
+ G e t M a g i c k D e s c r i p t i o n %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% GetMagickDescription() returns the magick description.
%
% The format of the GetMagickDescription method is:
%
% const char *GetMagickDescription(const MagickInfo *magick_info)
%
% A description of each parameter follows:
%
% o magick_info: The magick info.
%
*/
MagickExport const char *GetMagickDescription(const MagickInfo *magick_info)
{
assert(magick_info != (MagickInfo *) NULL);
assert(magick_info->signature == MagickCoreSignature);
return(magick_info->description);
}
␌
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
+ G e t M a g i c k E n c o d e r S e e k a b l e S t r e a m %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% GetMagickEncoderSeekableStream() returns MagickTrue if the magick supports a
% seekable stream in the encoder.
%
% The format of the GetMagickEncoderSeekableStream method is:
%
% MagickBooleanType GetMagickEncoderSeekableStream(
% const MagickInfo *magick_info)
%
% A description of each parameter follows:
%
% o magick_info: The magick info.
%
*/
MagickExport MagickBooleanType GetMagickEncoderSeekableStream(
const MagickInfo *magick_info)
{
assert(magick_info != (MagickInfo *) NULL);
assert(magick_info->signature == MagickCoreSignature);
if ((magick_info->flags & CoderEncoderSeekableStreamFlag) == 0)
return(MagickFalse);
return(MagickTrue);
}
␌
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
+ G e t M a g i c k E n c o d e r T h r e a d S u p p o r t %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% GetMagickEncoderThreadSupport() returns MagickTrue if the encoder supports
% threads.
%
% The format of the GetMagickEncoderThreadSupport method is:
%
% MagickStatusType GetMagickEncoderThreadSupport(
% const MagickInfo *magick_info)
%
% A description of each parameter follows:
%
% o magick_info: The magick info.
%
*/
MagickExport MagickBooleanType GetMagickEncoderThreadSupport(
const MagickInfo *magick_info)
{
assert(magick_info != (MagickInfo *) NULL);
assert(magick_info->signature == MagickCoreSignature);
return(((magick_info->flags & CoderDecoderThreadSupportFlag) == 0) ?
MagickFalse : MagickTrue);
}
␌
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
+ G e t M a g i c k E n d i a n S u p p o r t %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% GetMagickEndianSupport() returns the MagickTrue if the coder respects
% endianness other than MSBEndian.
%
% The format of the GetMagickEndianSupport method is:
%
% MagickBooleanType GetMagickEndianSupport(const MagickInfo *magick_info)
%
% A description of each parameter follows:
%
% o magick_info: The magick info.
%
*/
MagickExport MagickBooleanType GetMagickEndianSupport(
const MagickInfo *magick_info)
{
assert(magick_info != (MagickInfo *) NULL);
assert(magick_info->signature == MagickCoreSignature);
return(((magick_info->flags & CoderEndianSupportFlag) == 0) ? MagickFalse :
MagickTrue);
}
␌
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
+ G e t M a g i c k I n f o %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% GetMagickInfo() returns a pointer MagickInfo structure that matches
% the specified name. If name is NULL, the head of the image format list
% is returned.
%
% The format of the GetMagickInfo method is:
%
% const MagickInfo *GetMagickInfo(const char *name,Exception *exception)
%
% A description of each parameter follows:
%
% o name: the image format we are looking for.
%
% o exception: return any errors or warnings in this structure.
%
*/
MagickExport const MagickInfo *GetMagickInfo(const char *name,
ExceptionInfo *exception)
{
const MagickInfo
*magick_info;
/*
Find named module attributes.
*/
assert(exception != (ExceptionInfo *) NULL);
if (IsMagickTreeInstantiated(exception) == MagickFalse)
return((const MagickInfo *) NULL);
magick_info=(const MagickInfo *) NULL;
if ((name != (const char *) NULL) && (*name != '\0'))
{
LockSemaphoreInfo(magick_semaphore);
if (LocaleCompare(name,"*") == 0)
#if defined(MAGICKCORE_BUILD_MODULES)
(void) OpenModules(exception);
#else
RegisterStaticModules();
#endif
else
{
magick_info=(const MagickInfo *) GetValueFromSplayTree(magick_list,
name);
if (magick_info == (const MagickInfo *) NULL)
#if defined(MAGICKCORE_BUILD_MODULES)
(void) OpenModule(name,exception);
#else
(void) RegisterStaticModule(name,exception);
#endif
}
UnlockSemaphoreInfo(magick_semaphore);
}
if ((name == (const char *) NULL) || (LocaleCompare(name,"*") == 0))
return((const MagickInfo *) GetRootValueFromSplayTree(magick_list));
if (magick_info == (const MagickInfo *) NULL)
magick_info=(const MagickInfo *) GetValueFromSplayTree(magick_list,name);
return(magick_info);
}
␌
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
+ G e t M a g i c k I n f o L i s t %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% GetMagickInfoList() returns any image formats that match the specified
% pattern.
%
% The format of the GetMagickInfoList function is:
%
% const MagickInfo **GetMagickInfoList(const char *pattern,
% size_t *number_formats,ExceptionInfo *exception)
%
% A description of each parameter follows:
%
% o pattern: Specifies a pointer to a text string containing a pattern.
%
% o number_formats: This integer returns the number of formats in the list.
%
% o exception: return any errors or warnings in this structure.
%
*/
#if defined(__cplusplus) || defined(c_plusplus)
extern "C" {
#endif
static int MagickInfoCompare(const void *x,const void *y)
{
const MagickInfo
**p,
**q;
p=(const MagickInfo **) x,
q=(const MagickInfo **) y;
return(LocaleCompare((*p)->name,(*q)->name));
}
#if defined(__cplusplus) || defined(c_plusplus)
}
#endif
MagickExport const MagickInfo **GetMagickInfoList(const char *pattern,
size_t *number_formats,ExceptionInfo *exception)
{
const MagickInfo
**formats;
const MagickInfo
*p;
ssize_t
i;
/*
Allocate magick list.
*/
assert(pattern != (char *) NULL);
assert(number_formats != (size_t *) NULL);
if (IsEventLogging() != MagickFalse)
(void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",pattern);
*number_formats=0;
p=GetMagickInfo("*",exception);
if (p == (const MagickInfo *) NULL)
return((const MagickInfo **) NULL);
formats=(const MagickInfo **) AcquireQuantumMemory((size_t)
GetNumberOfNodesInSplayTree(magick_list)+1UL,sizeof(*formats));
if (formats == (const MagickInfo **) NULL)
return((const MagickInfo **) NULL);
/*
Generate magick list.
*/
LockSemaphoreInfo(magick_semaphore);
ResetSplayTreeIterator(magick_list);
p=(const MagickInfo *) GetNextValueInSplayTree(magick_list);
for (i=0; p != (const MagickInfo *) NULL; )
{
if ((GetMagickStealth(p) == MagickFalse) &&
(GlobExpression(p->name,pattern,MagickFalse) != MagickFalse))
formats[i++]=p;
p=(const MagickInfo *) GetNextValueInSplayTree(magick_list);
}
UnlockSemaphoreInfo(magick_semaphore);
qsort((void *) formats,(size_t) i,sizeof(*formats),MagickInfoCompare);
formats[i]=(MagickInfo *) NULL;
*number_formats=(size_t) i;
return(formats);
}
␌
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
+ G e t M a g i c k L i s t %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% GetMagickList() returns any image formats that match the specified pattern.
%
% The format of the GetMagickList function is:
%
% char **GetMagickList(const char *pattern,size_t *number_formats,
% ExceptionInfo *exception)
%
% A description of each parameter follows:
%
% o pattern: Specifies a pointer to a text string containing a pattern.
%
% o number_formats: This integer returns the number of formats in the list.
%
% o exception: return any errors or warnings in this structure.
%
*/
#if defined(__cplusplus) || defined(c_plusplus)
extern "C" {
#endif
static int MagickCompare(const void *x,const void *y)
{
const char
**p,
**q;
p=(const char **) x;
q=(const char **) y;
return(LocaleCompare(*p,*q));
}
#if defined(__cplusplus) || defined(c_plusplus)
}
#endif
MagickExport char **GetMagickList(const char *pattern,
size_t *number_formats,ExceptionInfo *exception)
{
char
**formats;
const MagickInfo
*p;
ssize_t
i;
/*
Allocate magick list.
*/
assert(pattern != (char *) NULL);
assert(number_formats != (size_t *) NULL);
if (IsEventLogging() != MagickFalse)
(void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",pattern);
*number_formats=0;
p=GetMagickInfo("*",exception);
if (p == (const MagickInfo *) NULL)
return((char **) NULL);
formats=(char **) AcquireQuantumMemory((size_t)
GetNumberOfNodesInSplayTree(magick_list)+1UL,sizeof(*formats));
if (formats == (char **) NULL)
return((char **) NULL);
LockSemaphoreInfo(magick_semaphore);
ResetSplayTreeIterator(magick_list);
p=(const MagickInfo *) GetNextValueInSplayTree(magick_list);
for (i=0; p != (const MagickInfo *) NULL; )
{
if ((GetMagickStealth(p) == MagickFalse) &&
(GlobExpression(p->name,pattern,MagickFalse) != MagickFalse))
formats[i++]=ConstantString(p->name);
p=(const MagickInfo *) GetNextValueInSplayTree(magick_list);
}
UnlockSemaphoreInfo(magick_semaphore);
qsort((void *) formats,(size_t) i,sizeof(*formats),MagickCompare);
formats[i]=(char *) NULL;
*number_formats=(size_t) i;
return(formats);
}
␌
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
+ G e t M a g i c k M i m e T y p e %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% GetMagickMimeType() returns the magick mime type.
%
% The format of the GetMagickMimeType method is:
%
% const char *GetMagickMimeType(const MagickInfo *magick_info)
%
% A description of each parameter follows:
%
% o magick_info: The magick info.
%
*/
MagickExport const char *GetMagickMimeType(const MagickInfo *magick_info)
{
assert(magick_info != (MagickInfo *) NULL);
assert(magick_info->signature == MagickCoreSignature);
return(magick_info->mime_type);
}
␌
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
+ G e t M a g i c k M o d u l e N a m e %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% GetMagickModuleName() returns the magick module name.
%
% The format of the GetMagickModuleName method is:
%
% const char *GetMagickModuleName(const MagickInfo *magick_info)
%
% A description of each parameter follows:
%
% o magick_info: The magick info.
%
*/
MagickExport const char *GetMagickModuleName(const MagickInfo *magick_info)
{
assert(magick_info != (MagickInfo *) NULL);
assert(magick_info->signature == MagickCoreSignature);
return(magick_info->magick_module);
}
␌
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
+ G e t M a g i c k N a m e %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% GetMagickName() returns the magick name.
%
% The format of the GetMagickName method is:
%
% const char *GetMagickName(const MagickInfo *magick_info)
%
% A description of each parameter follows:
%
% o magick_info: The magick info.
%
*/
MagickExport const char *GetMagickName(const MagickInfo *magick_info)
{
assert(magick_info != (MagickInfo *) NULL);
assert(magick_info->signature == MagickCoreSignature);
return(magick_info->name);
}
␌
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% G e t M a g i c k P r e c i s i o n %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% GetMagickPrecision() returns the maximum number of significant digits to be
% printed.
%
% The format of the GetMagickPrecision method is:
%
% int GetMagickPrecision(void)
%
*/
MagickExport int GetMagickPrecision(void)
{
if (IsEventLogging() != MagickFalse)
(void) LogMagickEvent(TraceEvent,GetMagickModule(),"...");
return(SetMagickPrecision(0));
}
␌
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
+ G e t M a g i c k R a w S u p p o r t %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% GetMagickRawSupport() returns the MagickTrue if the coder is a raw format.
%
% The format of the GetMagickRawSupport method is:
%
% MagickBooleanType GetMagickRawSupport(const MagickInfo *magick_info)
%
% A description of each parameter follows:
%
% o magick_info: The magick info.
%
*/
MagickExport MagickBooleanType GetMagickRawSupport(
const MagickInfo *magick_info)
{
assert(magick_info != (MagickInfo *) NULL);
assert(magick_info->signature == MagickCoreSignature);
return(((magick_info->flags & CoderRawSupportFlag) == 0) ? MagickFalse :
MagickTrue);
}
␌
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
+ G e t M a g i c k S t e a l t h %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% GetMagickStealth() returns MagickTrue if the magick is a stealth coder.
%
% The format of the GetMagickStealth method is:
%
% MagickBooleanType GetMagickStealth(const MagickInfo *magick_info)
%
% A description of each parameter follows:
%
% o magick_info: The magick info.
%
*/
MagickExport MagickBooleanType GetMagickStealth(const MagickInfo *magick_info)
{
assert(magick_info != (MagickInfo *) NULL);
assert(magick_info->signature == MagickCoreSignature);
return(((magick_info->flags & CoderStealthFlag) == 0) ? MagickFalse :
MagickTrue);
}
␌
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
+ G e t M a g i c k U s e E x t e n s i o n %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% GetMagickUseExtension() returns MagickTrue if the magick can use the
% extension of the format if the format return by IsImageFormatHandler uses
% the same coder.
%
% The format of the GetMagickUseExtension method is:
%
% MagickBooleanType GetMagickUseExtension(const MagickInfo *magick_info)
%
% A description of each parameter follows:
%
% o magick_info: The magick info.
%
*/
MagickExport MagickBooleanType GetMagickUseExtension(
const MagickInfo *magick_info)
{
assert(magick_info != (MagickInfo *) NULL);
assert(magick_info->signature == MagickCoreSignature);
return(((magick_info->flags & CoderUseExtensionFlag) == 0) ? MagickFalse :
MagickTrue);
}
␌
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
+ I s M a g i c k T r e e I n s t a n t i a t e d %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% IsMagickTreeInstantiated() determines if the magick tree is instantiated.
% If not, it instantiates the tree and returns it.
%
% The format of the IsMagickTreeInstantiated() method is:
%
% IsMagickTreeInstantiated(Exceptioninfo *exception)
%
% A description of each parameter follows.
%
% o exception: return any errors or warnings in this structure.
%
*/
static void *DestroyMagickNode(void *magick_info)
{
MagickInfo
*p;
p=(MagickInfo *) magick_info;
if (p->magick_module != (char *) NULL)
p->magick_module=DestroyString(p->magick_module);
if (p->note != (char *) NULL)
p->note=DestroyString(p->note);
if (p->mime_type != (char *) NULL)
p->mime_type=DestroyString(p->mime_type);
if (p->version != (char *) NULL)
p->version=DestroyString(p->version);
if (p->description != (char *) NULL)
p->description=DestroyString(p->description);
if (p->name != (char *) NULL)
p->name=DestroyString(p->name);
if (p->semaphore != (SemaphoreInfo *) NULL)
RelinquishSemaphoreInfo(&p->semaphore);
return(RelinquishMagickMemory(p));
}
static MagickBooleanType IsMagickTreeInstantiated(ExceptionInfo *exception)
{
(void) exception;
if (magick_list_initialized == MagickFalse)
{
if (magick_semaphore == (SemaphoreInfo *) NULL)
ActivateSemaphoreInfo(&magick_semaphore);
LockSemaphoreInfo(magick_semaphore);
if (magick_list_initialized == MagickFalse)
{
magick_list=NewSplayTree(CompareSplayTreeString,(void *(*)(void *))
NULL,DestroyMagickNode);
#if defined(MAGICKCORE_MODULES_SUPPORT)
(void) GetModuleInfo((char *) NULL,exception);
#endif
magick_list_initialized=MagickTrue;
}
UnlockSemaphoreInfo(magick_semaphore);
}
return(magick_list != (SplayTreeInfo *) NULL ? MagickTrue : MagickFalse);
}
␌
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
+ I s M a g i c k C o n f l i c t %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% IsMagickConflict() returns MagickTrue if the image format conflicts with a
% logical drive (.e.g. X:).
%
% The format of the IsMagickConflict method is:
%
% MagickBooleanType IsMagickConflict(const char *magick)
%
% A description of each parameter follows:
%
% o magick: Specifies the image format.
%
*/
MagickPrivate MagickBooleanType IsMagickConflict(const char *magick)
{
assert(magick != (char *) NULL);
#if defined(vms)
return(VMSIsMagickConflict(magick));
#elif defined(MAGICKCORE_WINDOWS_SUPPORT)
return(NTIsMagickConflict(magick));
#else
return(MagickFalse);
#endif
}
␌
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
+ L i s t M a g i c k I n f o %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% ListMagickInfo() lists the image formats to a file.
%
% The format of the ListMagickInfo method is:
%
% MagickBooleanType ListMagickInfo(FILE *file,ExceptionInfo *exception)
%
% A description of each parameter follows.
%
% o file: A file handle.
%
% o exception: return any errors or warnings in this structure.
%
*/
MagickExport MagickBooleanType ListMagickInfo(FILE *file,
ExceptionInfo *exception)
{
const MagickInfo
**magick_info;
ssize_t
i;
size_t
number_formats;
ssize_t
j;
if (file == (FILE *) NULL)
file=stdout;
magick_info=GetMagickInfoList("*",&number_formats,exception);
if (magick_info == (const MagickInfo **) NULL)
return(MagickFalse);
ClearMagickException(exception);
#if !defined(MAGICKCORE_MODULES_SUPPORT)
(void) FormatLocaleFile(file," Format Mode Description\n");
#else
(void) FormatLocaleFile(file," Format Module Mode Description\n");
#endif
(void) FormatLocaleFile(file,
"--------------------------------------------------------"
"-----------------------\n");
for (i=0; i < (ssize_t) number_formats; i++)
{
if (GetMagickStealth(magick_info[i]) != MagickFalse)
continue;
(void) FormatLocaleFile(file,"%9s%c ",
magick_info[i]->name != (char *) NULL ? magick_info[i]->name : "",
GetMagickBlobSupport(magick_info[i]) != MagickFalse ? '*' : ' ');
#if defined(MAGICKCORE_MODULES_SUPPORT)
{
char
magick_module[MagickPathExtent];
*magick_module='\0';
if (magick_info[i]->magick_module != (char *) NULL)
(void) CopyMagickString(magick_module,magick_info[i]->magick_module,
MagickPathExtent);
(void) ConcatenateMagickString(magick_module," ",
MagickPathExtent);
magick_module[9]='\0';
(void) FormatLocaleFile(file,"%9s ",magick_module);
}
#endif
(void) FormatLocaleFile(file,"%c%c%c ",magick_info[i]->decoder ? 'r' : '-',
magick_info[i]->encoder ? 'w' : '-',magick_info[i]->encoder != NULL &&
GetMagickAdjoin(magick_info[i]) != MagickFalse ? '+' : '-');
if (magick_info[i]->description != (char *) NULL)
(void) FormatLocaleFile(file," %s",magick_info[i]->description);
if (magick_info[i]->version != (char *) NULL)
(void) FormatLocaleFile(file," (%s)",magick_info[i]->version);
(void) FormatLocaleFile(file,"\n");
if (magick_info[i]->note != (char *) NULL)
{
char
**text;
text=StringToList(magick_info[i]->note);
if (text != (char **) NULL)
{
for (j=0; text[j] != (char *) NULL; j++)
{
(void) FormatLocaleFile(file," %s\n",text[j]);
text[j]=DestroyString(text[j]);
}
text=(char **) RelinquishMagickMemory(text);
}
}
}
(void) FormatLocaleFile(file,"\n* native blob support\n");
(void) FormatLocaleFile(file,"r read support\n");
(void) FormatLocaleFile(file,"w write support\n");
(void) FormatLocaleFile(file,"+ support for multiple images\n");
(void) fflush(file);
magick_info=(const MagickInfo **) RelinquishMagickMemory((void *)
magick_info);
return(MagickTrue);
}
␌
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% I s M a g i c k C o r e I n s t a n t i a t e d %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% IsMagickCoreInstantiated() returns MagickFalse if the ImageMagick
% environment has not been instantiated; the ImageMagick environment
% has been instantiated when MagickCoreGenesis() has been called but
% MagickDestroy() has not been called.
%
% The format of the IsMagickCoreInstantiated method is:
%
% MagickBooleanType IsMagickCoreInstantiated(void)
%
*/
MagickExport MagickBooleanType IsMagickCoreInstantiated(void)
{
return(magickcore_instantiated);
}
␌
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
+ M a g i c k C o m p o n e n t G e n e s i s %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% MagickComponentGenesis() instantiates the magick component.
%
% The format of the MagickComponentGenesis method is:
%
% MagickBooleanType MagickComponentGenesis(void)
%
*/
MagickPrivate MagickBooleanType MagickComponentGenesis(void)
{
if (magick_semaphore == (SemaphoreInfo *) NULL)
magick_semaphore=AcquireSemaphoreInfo();
return(MagickTrue);
}
␌
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
+ M a g i c k C o m p o n e n t T e r m i n u s %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% MagickComponentTerminus() destroys the magick component.
%
% The format of the MagickComponentTerminus method is:
%
% void MagickComponentTerminus(void)
%
*/
MagickPrivate void MagickComponentTerminus(void)
{
if (magick_semaphore == (SemaphoreInfo *) NULL)
ActivateSemaphoreInfo(&magick_semaphore);
LockSemaphoreInfo(magick_semaphore);
if (magick_list != (SplayTreeInfo *) NULL)
{
magick_list=DestroySplayTree(magick_list);
magick_list_initialized=MagickFalse;
}
UnlockSemaphoreInfo(magick_semaphore);
RelinquishSemaphoreInfo(&magick_semaphore);
}
␌
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% M a g i c k C o r e G e n e s i s %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% MagickCoreGenesis() initializes the MagickCore environment.
%
% The format of the MagickCoreGenesis function is:
%
% MagickCoreGenesis(const char *path,
% const MagickBooleanType establish_signal_handlers)
%
% A description of each parameter follows:
%
% o path: the execution path of the current ImageMagick client.
%
% o establish_signal_handlers: set to MagickTrue to use MagickCore's own
% signal handlers for common signals.
%
*/
static SignalHandler *SetMagickSignalHandler(int signal_number,
SignalHandler *handler)
{
#if defined(MAGICKCORE_HAVE_SIGACTION) && defined(MAGICKCORE_HAVE_SIGEMPTYSET)
int
status;
sigset_t
mask;
struct sigaction
action,
previous_action;
sigemptyset(&mask);
sigaddset(&mask,signal_number);
sigprocmask(SIG_BLOCK,&mask,NULL);
action.sa_mask=mask;
action.sa_handler=handler;
action.sa_flags=0;
#if defined(SA_INTERRUPT)
action.sa_flags|=SA_INTERRUPT;
#endif
#if defined(SA_ONSTACK)
action.sa_flags|=SA_ONSTACK;
#endif
previous_action.sa_handler=SIG_DFL;
status=sigaction(signal_number,&action,&previous_action);
if (status < 0)
return(SIG_ERR);
sigprocmask(SIG_UNBLOCK,&mask,NULL);
return(previous_action.sa_handler);
#else
return(signal(signal_number,handler));
#endif
}
static void MagickSignalHandler(int signal_number)
{
if (magickcore_signal_in_progress != MagickFalse)
(void) SetMagickSignalHandler(signal_number,signal_handlers[signal_number]);
magickcore_signal_in_progress=MagickTrue;
AsynchronousResourceComponentTerminus();
#if defined(SIGQUIT)
if (signal_number == SIGQUIT)
abort();
#endif
#if defined(SIGABRT)
if (signal_number == SIGABRT)
abort();
#endif
#if defined(SIGBUS)
if (signal_number == SIGBUS)
abort();
#endif
#if defined(SIGFPE)
if (signal_number == SIGFPE)
abort();
#endif
#if defined(SIGSEGV)
if (signal_number == SIGSEGV)
abort();
#endif
#if !defined(MAGICKCORE_HAVE__EXIT)
exit(signal_number);
#else
#if defined(SIGHUP)
if (signal_number == SIGHUP)
_exit(signal_number);
#endif
#if defined(SIGINT)
if (signal_number == SIGINT)
_exit(signal_number);
#endif
#if defined(MAGICKCORE_HAVE_RAISE)
if (signal_handlers[signal_number] != MagickSignalHandler)
raise(signal_number);
#endif
_exit(signal_number); /* do not invoke registered atexit() methods */
#endif
}
static SignalHandler *RegisterMagickSignalHandler(int signal_number)
{
SignalHandler
*handler;
handler=SetMagickSignalHandler(signal_number,MagickSignalHandler);
if (handler == SIG_ERR)
return(handler);
if (handler != SIG_DFL)
handler=SetMagickSignalHandler(signal_number,handler);
else
(void) LogMagickEvent(ConfigureEvent,GetMagickModule(),
"Register handler for signal: %d",signal_number);
return(handler);
}
static void SetClientNameAndPath(const char *path)
{
char
execution_path[MagickPathExtent],
filename[MagickPathExtent];
#if defined(MAGICKCORE_WINDOWS_SUPPORT)
if ((path != (const char *) NULL) && (IsPathAccessible(path) != MagickFalse))
#else
if ((path != (const char *) NULL) && (*path == *DirectorySeparator) &&
(IsPathAccessible(path) != MagickFalse))
#endif
(void) CopyMagickString(execution_path,path,MagickPathExtent);
else
(void) GetExecutionPath(execution_path,MagickPathExtent);
GetPathComponent(execution_path,TailPath,filename);
(void) SetClientName(filename);
GetPathComponent(execution_path,HeadPath,execution_path);
(void) SetClientPath(execution_path);
}
MagickExport void MagickCoreGenesis(const char *path,
const MagickBooleanType establish_signal_handlers)
{
char
*events;
/*
Initialize the Magick environment.
*/
#if defined(__has_feature)
#if __has_feature(address_sanitizer)
(void) putenv("MAGICK_THREAD_LIMIT=1");
#endif
#endif
InitializeMagickMutex();
LockMagickMutex();
if (magickcore_instantiated != MagickFalse)
{
UnlockMagickMutex();
return;
}
(void) SemaphoreComponentGenesis();
(void) ExceptionComponentGenesis();
SetClientNameAndPath(path);
(void) LogComponentGenesis();
(void) LocaleComponentGenesis();
(void) RandomComponentGenesis();
events=GetEnvironmentValue("MAGICK_DEBUG");
if (events != (char *) NULL)
{
(void) SetLogEventMask(events);
events=DestroyString(events);
}
#if defined(MAGICKCORE_WINDOWS_SUPPORT)
NTWindowsGenesis();
#endif
if (establish_signal_handlers != MagickFalse)
{
/*
Set signal handlers.
*/
#if defined(SIGABRT)
if (signal_handlers[SIGABRT] == (SignalHandler *) NULL)
signal_handlers[SIGABRT]=RegisterMagickSignalHandler(SIGABRT);
#endif
#if defined(SIGBUS)
if (signal_handlers[SIGBUS] == (SignalHandler *) NULL)
signal_handlers[SIGBUS]=RegisterMagickSignalHandler(SIGBUS);
#endif
#if defined(SIGSEGV)
if (signal_handlers[SIGSEGV] == (SignalHandler *) NULL)
signal_handlers[SIGSEGV]=RegisterMagickSignalHandler(SIGSEGV);
#endif
#if defined(SIGFPE)
if (signal_handlers[SIGFPE] == (SignalHandler *) NULL)
signal_handlers[SIGFPE]=RegisterMagickSignalHandler(SIGFPE);
#endif
#if defined(SIGHUP)
if (signal_handlers[SIGHUP] == (SignalHandler *) NULL)
signal_handlers[SIGHUP]=RegisterMagickSignalHandler(SIGHUP);
#endif
#if defined(SIGINT)
if (signal_handlers[SIGINT] == (SignalHandler *) NULL)
signal_handlers[SIGINT]=RegisterMagickSignalHandler(SIGINT);
#endif
#if defined(SIGQUIT)
if (signal_handlers[SIGQUIT] == (SignalHandler *) NULL)
signal_handlers[SIGQUIT]=RegisterMagickSignalHandler(SIGQUIT);
#endif
#if defined(SIGTERM)
if (signal_handlers[SIGTERM] == (SignalHandler *) NULL)
signal_handlers[SIGTERM]=RegisterMagickSignalHandler(SIGTERM);
#endif
#if defined(SIGXCPU)
if (signal_handlers[SIGXCPU] == (SignalHandler *) NULL)
signal_handlers[SIGXCPU]=RegisterMagickSignalHandler(SIGXCPU);
#endif
#if defined(SIGXFSZ)
if (signal_handlers[SIGXFSZ] == (SignalHandler *) NULL)
signal_handlers[SIGXFSZ]=RegisterMagickSignalHandler(SIGXFSZ);
#endif
}
/*
Instantiate magick resources.
*/
(void) ConfigureComponentGenesis();
(void) PolicyComponentGenesis();
#if MAGICKCORE_ZERO_CONFIGURATION_SUPPORT
(void) ZeroConfigurationPolicy;
#endif
(void) CacheComponentGenesis();
(void) ResourceComponentGenesis();
(void) CoderComponentGenesis();
(void) MagickComponentGenesis();
#if defined(MAGICKCORE_MODULES_SUPPORT)
(void) ModuleComponentGenesis();
#endif
(void) DelegateComponentGenesis();
(void) MagicComponentGenesis();
(void) ColorComponentGenesis();
(void) TypeComponentGenesis();
(void) MimeComponentGenesis();
(void) AnnotateComponentGenesis();
#if defined(MAGICKCORE_X11_DELEGATE)
(void) XComponentGenesis();
#endif
(void) RegistryComponentGenesis();
(void) MonitorComponentGenesis();
magickcore_instantiated=MagickTrue;
UnlockMagickMutex();
}
␌
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% M a g i c k C o r e T e r m i n u s %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% MagickCoreTerminus() is a function in the ImageMagick library that is
% used to clean up and release resources when shutting down an application
% that uses ImageMagick. This function should be called in the primary thread
% of the application's process during the shutdown process. It's crucial that
% this function is invoked only after any threads that are using ImageMagick
% functions have terminated.
%
% ImageMagick might internally use threads via OpenMP (a method for parallel
% programming). As a result, it's important to ensure that any function calls
% into ImageMagick have completed before calling MagickCoreTerminus(). This
% prevents issues with OpenMP worker threads accessing resources that are
% destroyed by this termination function.
%
% If OpenMP is being used (starting from version 5.0), the OpenMP
% implementation itself handles starting and stopping worker threads and
% allocating and freeing resources using its own methods. This means that
% after calling MagickCoreTerminus(), some OpenMP resources and worker
% threads might still remain allocated. To address this, the function
% omp_pause_resource_all(omp_pause_hard) can be invoked. This function,
% introduced in OpenMP version 5.0, ensures that any resources allocated by
% OpenMP (such as threads and thread-specific memory) are freed. It's
% recommended to call this function after MagickCoreTerminus() has completed
% its execution.
%
% The format of the MagickCoreTerminus function is:
%
% MagickCoreTerminus(void)
%
*/
MagickExport void MagickCoreTerminus(void)
{
InitializeMagickMutex();
LockMagickMutex();
if (magickcore_instantiated == MagickFalse)
{
UnlockMagickMutex();
return;
}
MonitorComponentTerminus();
RegistryComponentTerminus();
AnnotateComponentTerminus();
MimeComponentTerminus();
TypeComponentTerminus();
#if defined(MAGICKCORE_OPENCL_SUPPORT)
OpenCLTerminus();
#endif
ColorComponentTerminus();
#if defined(MAGICKCORE_WINDOWS_SUPPORT)
NTWindowsTerminus();
#endif
MagicComponentTerminus();
DelegateComponentTerminus();
MagickComponentTerminus();
#if !defined(MAGICKCORE_BUILD_MODULES)
UnregisterStaticModules();
#endif
#if defined(MAGICKCORE_MODULES_SUPPORT)
ModuleComponentTerminus();
#endif
#if defined(MAGICKCORE_X11_DELEGATE)
XComponentTerminus();
#endif
CoderComponentTerminus();
ResourceComponentTerminus();
CacheComponentTerminus();
PolicyComponentTerminus();
ConfigureComponentTerminus();
RandomComponentTerminus();
LocaleComponentTerminus();
LogComponentTerminus();
ExceptionComponentTerminus();
magickcore_instantiated=MagickFalse;
UnlockMagickMutex();
SemaphoreComponentTerminus();
}
␌
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
+ R e g i s t e r M a g i c k I n f o %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% RegisterMagickInfo() adds attributes for a particular image format to the
% list of supported formats. The attributes include the image format name,
% a method to read and/or write the format, whether the format supports the
% saving of more than one frame to the same file or blob, whether the format
% supports native in-memory I/O, and a brief description of the format.
%
% The format of the RegisterMagickInfo method is:
%
% MagickInfo *RegisterMagickInfo(MagickInfo *magick_info)
%
% A description of each parameter follows:
%
% o magick_info: the magick info.
%
*/
MagickExport MagickBooleanType RegisterMagickInfo(MagickInfo *magick_info)
{
MagickBooleanType
status;
/*
Register a new image format.
*/
assert(magick_info != (MagickInfo *) NULL);
assert(magick_info->signature == MagickCoreSignature);
if (IsEventLogging() != MagickFalse)
(void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",magick_info->name);
if (magick_list == (SplayTreeInfo *) NULL)
return(MagickFalse);
if ((GetMagickDecoderThreadSupport(magick_info) == MagickFalse) ||
(GetMagickEncoderThreadSupport(magick_info) == MagickFalse))
magick_info->semaphore=AcquireSemaphoreInfo();
status=AddValueToSplayTree(magick_list,magick_info->name,magick_info);
return(status);
}
␌
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
+ R e s e t M a g i c k P r e c i s i o n %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% ResetMagickPrecision() resets the magick_precision value.
%
% The format of the ResetMagickPrecision method is:
%
% void ResetMagickPrecision(void)
%
*/
MagickPrivate void ResetMagickPrecision(void)
{
magick_precision=0;
}
␌
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% S e t M a g i c k P r e c i s i o n %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% SetMagickPrecision() sets the maximum number of significant digits to be
% printed.
%
% An input argument of 0 returns the current precision setting.
%
% A negative value forces the precision to reset to a default value according
% to the environment variable "MAGICK_PRECISION", the current 'policy'
% configuration setting, or the default value of '6', in that order.
%
% The format of the SetMagickPrecision method is:
%
% int SetMagickPrecision(const int precision)
%
% A description of each parameter follows:
%
% o precision: set the maximum number of significant digits to be printed.
%
*/
MagickExport int SetMagickPrecision(const int precision)
{
#define MagickPrecision (MAGICKCORE_QUANTUM_DEPTH/8+4)
if (IsEventLogging() != MagickFalse)
(void) LogMagickEvent(TraceEvent,GetMagickModule(),"...");
if (precision > 0)
magick_precision=precision;
if ((precision < 0) || (magick_precision == 0))
{
char
*limit;
ExceptionInfo
*exception = AcquireExceptionInfo();
magick_precision=MagickPrecision;
limit=(char *) GetImageRegistry(StringRegistryType,"precision",exception);
exception=DestroyExceptionInfo(exception);
if (limit == (char *) NULL)
limit=GetEnvironmentValue("MAGICK_PRECISION");
if (limit == (char *) NULL)
limit=GetPolicyValue("system:precision"); /* deprecated */
if (limit != (char *) NULL)
{
magick_precision=StringToInteger(limit);
limit=DestroyString(limit);
}
}
return(magick_precision);
}
␌
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
+ U n r e g i s t e r M a g i c k I n f o %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% UnregisterMagickInfo() removes a name from the magick info list. It returns
% MagickFalse if the name does not exist in the list otherwise MagickTrue.
%
% The format of the UnregisterMagickInfo method is:
%
% MagickBooleanType UnregisterMagickInfo(const char *name)
%
% A description of each parameter follows:
%
% o name: a character string that represents the image format we are
% looking for.
%
*/
MagickExport MagickBooleanType UnregisterMagickInfo(const char *name)
{
const MagickInfo
*p;
MagickBooleanType
status;
assert(name != (const char *) NULL);
if (magick_list == (SplayTreeInfo *) NULL)
return(MagickFalse);
if (GetNumberOfNodesInSplayTree(magick_list) == 0)
return(MagickFalse);
LockSemaphoreInfo(magick_semaphore);
ResetSplayTreeIterator(magick_list);
p=(const MagickInfo *) GetNextValueInSplayTree(magick_list);
while (p != (const MagickInfo *) NULL)
{
if (LocaleCompare(p->name,name) == 0)
break;
p=(const MagickInfo *) GetNextValueInSplayTree(magick_list);
}
status=DeleteNodeByValueFromSplayTree(magick_list,p);
UnlockSemaphoreInfo(magick_semaphore);
return(status);
}
SemaphoreInfo
Definition semaphore.c:61
_ExceptionInfo
Definition exception.h:102
_MagickInfo
Definition magick.h:67
_SplayTreeInfo
Definition splay-tree.c:84