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ImageMagick-6.1.1/coders/jpeg.c File Reference

#include "magick/studio.h"
#include "magick/attribute.h"
#include "magick/blob.h"
#include "magick/blob_private.h"
#include "magick/color.h"
#include "magick/color_private.h"
#include "magick/colorspace.h"
#include "magick/constitute.h"
#include "magick/error.h"
#include "magick/error_private.h"
#include "magick/geometry.h"
#include "magick/image.h"
#include "magick/image_private.h"
#include "magick/list.h"
#include "magick/log.h"
#include "magick/magick.h"
#include "magick/memory_.h"
#include "magick/monitor.h"
#include "magick/option.h"
#include "magick/profile.h"
#include "magick/resource_.h"
#include "magick/static.h"
#include "magick/string_.h"
#include "magick/utility.h"
#include <setjmp.h>

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Go to the source code of this file.

Defines

#define ICC_MARKER   (JPEG_APP0+2)
#define ICC_PROFILE   "ICC_PROFILE"
#define IPTC_MARKER   (JPEG_APP0+13)
#define XML_MARKER   (JPEG_APP0+1)
#define MaxBufferExtent   8192

Functions

MagickBooleanType IsJPEG (const unsigned char *magick, const size_t length)
ModuleExport void RegisterJPEGImage (void)
ModuleExport void UnregisterJPEGImage (void)

Define Documentation

#define ICC_MARKER   (JPEG_APP0+2)
 

Definition at line 84 of file jpeg.c.

#define ICC_PROFILE   "ICC_PROFILE"
 

Definition at line 85 of file jpeg.c.

#define IPTC_MARKER   (JPEG_APP0+13)
 

Definition at line 86 of file jpeg.c.

#define MaxBufferExtent   8192
 

Definition at line 88 of file jpeg.c.

#define XML_MARKER   (JPEG_APP0+1)
 

Definition at line 87 of file jpeg.c.

Function Documentation

MagickBooleanType IsJPEG (  const unsigned char *  magick,
const size_t  length
)  [static]
 

Definition at line 166 of file jpeg.c.

References MagickBooleanType, MagickFalse, and MagickTrue.

Referenced by RegisterJPEGImage(). 

00167 {
00168   if (length < 3)
00169     return(MagickFalse);
00170   if (memcmp(magick,"\377\330\377",3) == 0)
00171     return(MagickTrue);
00172   return(MagickFalse);
00173 }

ModuleExport void RegisterJPEGImage (  void   ) 
 

Definition at line 1190 of file jpeg.c.

References AcquireString(), _MagickInfo::adjoin, _MagickInfo::decoder, DecoderHandler, _MagickInfo::description, _MagickInfo::encoder, EncoderHandler, FormatMagickString(), IsJPEG(), _MagickInfo::magick, MagickFalse, MagickHandler, MaxTextExtent, _MagickInfo::module, ModuleExport, RegisterMagickInfo(), SetMagickInfo(), _MagickInfo::thread_support, and _MagickInfo::version.

Referenced by RegisterStaticModules(). 

01191 {
01192   MagickInfo
01193     *entry;
01194 
01195   entry=SetMagickInfo("JPEG");
01196   entry->thread_support=MagickFalse;
01197 #if defined(HasJPEG)
01198   entry->decoder=(DecoderHandler *) ReadJPEGImage;
01199   entry->encoder=(EncoderHandler *) WriteJPEGImage;
01200 #endif
01201   entry->magick=(MagickHandler *) IsJPEG;
01202   entry->adjoin=MagickFalse;
01203   entry->description=
01204     AcquireString("Joint Photographic Experts Group JFIF format");
01205 #if defined(JPEG_LIB_VERSION)
01206   {
01207     char
01208       version[MaxTextExtent];
01209 
01210     (void) FormatMagickString(version,MaxTextExtent,"%d",JPEG_LIB_VERSION);
01211     entry->version=AcquireString(version);
01212   }
01213 #endif
01214   entry->module=AcquireString("JPEG");
01215   (void) RegisterMagickInfo(entry);
01216   entry=SetMagickInfo("JPG");
01217   entry->thread_support=MagickFalse;
01218 #if defined(HasJPEG)
01219   entry->decoder=(DecoderHandler *) ReadJPEGImage;
01220   entry->encoder=(EncoderHandler *) WriteJPEGImage;
01221 #endif
01222   entry->adjoin=MagickFalse;
01223   entry->description=
01224     AcquireString("Joint Photographic Experts Group JFIF format");
01225   entry->module=AcquireString("JPEG");
01226   (void) RegisterMagickInfo(entry);
01227   entry=SetMagickInfo("PJPEG");
01228   entry->thread_support=MagickFalse;
01229 #if defined(HasJPEG)
01230   entry->decoder=(DecoderHandler *) ReadJPEGImage;
01231   entry->encoder=(EncoderHandler *) WriteJPEGImage;
01232 #endif
01233   entry->adjoin=MagickFalse;
01234   entry->description=
01235     AcquireString("Progessive Joint Photographic Experts Group JFIF");
01236   entry->module=AcquireString("JPEG");
01237   (void) RegisterMagickInfo(entry);
01238 }

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ModuleExport void UnregisterJPEGImage (  void   ) 
 

Definition at line 1259 of file jpeg.c.

References ModuleExport, and UnregisterMagickInfo().

Referenced by UnregisterStaticModules(). 

01260 {
01261   (void) UnregisterMagickInfo("JPEG");
01262   (void) UnregisterMagickInfo("JPG");
01263 }

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