blob: 3efbb22766cb96ac068fc6f47cc1171d852fbaf4 [file] [log] [blame]
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% PPPP RRRR OOO PPPP EEEEE RRRR TTTTT Y Y %
% P P R R O O P P E R R T Y Y %
% PPPP RRRR O O PPPP EEE RRRR T Y %
% P R R O O P E R R T Y %
% P R R OOO P EEEEE R R T Y %
% %
% %
% MagickCore Property Methods %
% %
% Software Design %
% Cristy %
% March 2000 %
% %
% %
% Copyright 1999-2019 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/artifact.h"
#include "MagickCore/attribute.h"
#include "MagickCore/cache.h"
#include "MagickCore/cache-private.h"
#include "MagickCore/color.h"
#include "MagickCore/color-private.h"
#include "MagickCore/colorspace-private.h"
#include "MagickCore/compare.h"
#include "MagickCore/constitute.h"
#include "MagickCore/draw.h"
#include "MagickCore/effect.h"
#include "MagickCore/exception.h"
#include "MagickCore/exception-private.h"
#include "MagickCore/fx.h"
#include "MagickCore/fx-private.h"
#include "MagickCore/gem.h"
#include "MagickCore/geometry.h"
#include "MagickCore/histogram.h"
#include "MagickCore/image.h"
#include "MagickCore/layer.h"
#include "MagickCore/locale-private.h"
#include "MagickCore/list.h"
#include "MagickCore/magick.h"
#include "MagickCore/memory_.h"
#include "MagickCore/monitor.h"
#include "MagickCore/montage.h"
#include "MagickCore/option.h"
#include "MagickCore/policy.h"
#include "MagickCore/profile.h"
#include "MagickCore/property.h"
#include "MagickCore/quantum.h"
#include "MagickCore/resource_.h"
#include "MagickCore/splay-tree.h"
#include "MagickCore/signature.h"
#include "MagickCore/statistic.h"
#include "MagickCore/string_.h"
#include "MagickCore/string-private.h"
#include "MagickCore/token.h"
#include "MagickCore/token-private.h"
#include "MagickCore/utility.h"
#include "MagickCore/utility-private.h"
#include "MagickCore/version.h"
#include "MagickCore/xml-tree.h"
#include "MagickCore/xml-tree-private.h"
#if defined(MAGICKCORE_LCMS_DELEGATE)
#if defined(MAGICKCORE_HAVE_LCMS2_LCMS2_H)
#include <lcms2/lcms2.h>
#elif defined(MAGICKCORE_HAVE_LCMS2_H)
#include "lcms2.h"
#elif defined(MAGICKCORE_HAVE_LCMS_LCMS_H)
#include <lcms/lcms.h>
#else
#include "lcms.h"
#endif
#endif
/*
Define declarations.
*/
#if defined(MAGICKCORE_LCMS_DELEGATE)
#if defined(LCMS_VERSION) && (LCMS_VERSION < 2000)
#define cmsUInt32Number DWORD
#endif
#endif
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% C l o n e I m a g e P r o p e r t i e s %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% CloneImageProperties() clones all the image properties to another image.
%
% The format of the CloneImageProperties method is:
%
% MagickBooleanType CloneImageProperties(Image *image,
% const Image *clone_image)
%
% A description of each parameter follows:
%
% o image: the image.
%
% o clone_image: the clone image.
%
*/
MagickExport MagickBooleanType CloneImageProperties(Image *image,
const Image *clone_image)
{
assert(image != (Image *) NULL);
assert(image->signature == MagickCoreSignature);
if (image->debug != MagickFalse)
(void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
assert(clone_image != (const Image *) NULL);
assert(clone_image->signature == MagickCoreSignature);
if (clone_image->debug != MagickFalse)
(void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
clone_image->filename);
(void) CopyMagickString(image->filename,clone_image->filename,
MagickPathExtent);
(void) CopyMagickString(image->magick_filename,clone_image->magick_filename,
MagickPathExtent);
image->compression=clone_image->compression;
image->quality=clone_image->quality;
image->depth=clone_image->depth;
image->matte_color=clone_image->matte_color;
image->background_color=clone_image->background_color;
image->border_color=clone_image->border_color;
image->transparent_color=clone_image->transparent_color;
image->gamma=clone_image->gamma;
image->chromaticity=clone_image->chromaticity;
image->rendering_intent=clone_image->rendering_intent;
image->black_point_compensation=clone_image->black_point_compensation;
image->units=clone_image->units;
image->montage=(char *) NULL;
image->directory=(char *) NULL;
(void) CloneString(&image->geometry,clone_image->geometry);
image->offset=clone_image->offset;
image->resolution.x=clone_image->resolution.x;
image->resolution.y=clone_image->resolution.y;
image->page=clone_image->page;
image->tile_offset=clone_image->tile_offset;
image->extract_info=clone_image->extract_info;
image->filter=clone_image->filter;
image->fuzz=clone_image->fuzz;
image->intensity=clone_image->intensity;
image->interlace=clone_image->interlace;
image->interpolate=clone_image->interpolate;
image->endian=clone_image->endian;
image->gravity=clone_image->gravity;
image->compose=clone_image->compose;
image->orientation=clone_image->orientation;
image->scene=clone_image->scene;
image->dispose=clone_image->dispose;
image->delay=clone_image->delay;
image->ticks_per_second=clone_image->ticks_per_second;
image->iterations=clone_image->iterations;
image->total_colors=clone_image->total_colors;
image->taint=clone_image->taint;
image->progress_monitor=clone_image->progress_monitor;
image->client_data=clone_image->client_data;
image->start_loop=clone_image->start_loop;
image->error=clone_image->error;
image->signature=clone_image->signature;
if (clone_image->properties != (void *) NULL)
{
if (image->properties != (void *) NULL)
DestroyImageProperties(image);
image->properties=CloneSplayTree((SplayTreeInfo *)
clone_image->properties,(void *(*)(void *)) ConstantString,
(void *(*)(void *)) ConstantString);
}
return(MagickTrue);
}
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% D e f i n e I m a g e P r o p e r t y %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% DefineImageProperty() associates an assignment string of the form
% "key=value" with an artifact or options. It is equivelent to
% SetImageProperty().
%
% The format of the DefineImageProperty method is:
%
% MagickBooleanType DefineImageProperty(Image *image,const char *property,
% ExceptionInfo *exception)
%
% A description of each parameter follows:
%
% o image: the image.
%
% o property: the image property.
%
% o exception: return any errors or warnings in this structure.
%
*/
MagickExport MagickBooleanType DefineImageProperty(Image *image,
const char *property,ExceptionInfo *exception)
{
char
key[MagickPathExtent],
value[MagickPathExtent];
register char
*p;
assert(image != (Image *) NULL);
assert(property != (const char *) NULL);
(void) CopyMagickString(key,property,MagickPathExtent-1);
for (p=key; *p != '\0'; p++)
if (*p == '=')
break;
*value='\0';
if (*p == '=')
(void) CopyMagickString(value,p+1,MagickPathExtent);
*p='\0';
return(SetImageProperty(image,key,value,exception));
}
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% D e l e t e I m a g e P r o p e r t y %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% DeleteImageProperty() deletes an image property.
%
% The format of the DeleteImageProperty method is:
%
% MagickBooleanType DeleteImageProperty(Image *image,const char *property)
%
% A description of each parameter follows:
%
% o image: the image.
%
% o property: the image property.
%
*/
MagickExport MagickBooleanType DeleteImageProperty(Image *image,
const char *property)
{
assert(image != (Image *) NULL);
assert(image->signature == MagickCoreSignature);
if (image->debug != MagickFalse)
(void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
if (image->properties == (void *) NULL)
return(MagickFalse);
return(DeleteNodeFromSplayTree((SplayTreeInfo *) image->properties,property));
}
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% D e s t r o y I m a g e P r o p e r t i e s %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% DestroyImageProperties() destroys all properties and associated memory
% attached to the given image.
%
% The format of the DestroyDefines method is:
%
% void DestroyImageProperties(Image *image)
%
% A description of each parameter follows:
%
% o image: the image.
%
*/
MagickExport void DestroyImageProperties(Image *image)
{
assert(image != (Image *) NULL);
assert(image->signature == MagickCoreSignature);
if (image->debug != MagickFalse)
(void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
if (image->properties != (void *) NULL)
image->properties=(void *) DestroySplayTree((SplayTreeInfo *)
image->properties);
}
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% F o r m a t I m a g e P r o p e r t y %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% FormatImageProperty() permits formatted property/value pairs to be saved as
% an image property.
%
% The format of the FormatImageProperty method is:
%
% MagickBooleanType FormatImageProperty(Image *image,const char *property,
% const char *format,...)
%
% A description of each parameter follows.
%
% o image: The image.
%
% o property: The attribute property.
%
% o format: A string describing the format to use to write the remaining
% arguments.
%
*/
MagickExport MagickBooleanType FormatImageProperty(Image *image,
const char *property,const char *format,...)
{
char
value[MagickPathExtent];
ExceptionInfo
*exception;
MagickBooleanType
status;
ssize_t
n;
va_list
operands;
va_start(operands,format);
n=FormatLocaleStringList(value,MagickPathExtent,format,operands);
(void) n;
va_end(operands);
exception=AcquireExceptionInfo();
status=SetImageProperty(image,property,value,exception);
exception=DestroyExceptionInfo(exception);
return(status);
}
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% G e t I m a g e P r o p e r t y %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% GetImageProperty() gets a value associated with an image property.
%
% This includes, profile prefixes, such as "exif:", "iptc:" and "8bim:"
% It does not handle non-prifile prefixes, such as "fx:", "option:", or
% "artifact:".
%
% The returned string is stored as a properity of the same name for faster
% lookup later. It should NOT be freed by the caller.
%
% The format of the GetImageProperty method is:
%
% const char *GetImageProperty(const Image *image,const char *key,
% ExceptionInfo *exception)
%
% A description of each parameter follows:
%
% o image: the image.
%
% o key: the key.
%
% o exception: return any errors or warnings in this structure.
%
*/
static char
*TracePSClippath(const unsigned char *,size_t),
*TraceSVGClippath(const unsigned char *,size_t,const size_t,
const size_t);
static MagickBooleanType GetIPTCProperty(const Image *image,const char *key,
ExceptionInfo *exception)
{
char
*attribute,
*message;
const StringInfo
*profile;
long
count,
dataset,
record;
register ssize_t
i;
size_t
length;
profile=GetImageProfile(image,"iptc");
if (profile == (StringInfo *) NULL)
profile=GetImageProfile(image,"8bim");
if (profile == (StringInfo *) NULL)
return(MagickFalse);
count=sscanf(key,"IPTC:%ld:%ld",&dataset,&record);
if (count != 2)
return(MagickFalse);
attribute=(char *) NULL;
for (i=0; i < (ssize_t) GetStringInfoLength(profile); i+=(ssize_t) length)
{
length=1;
if ((ssize_t) GetStringInfoDatum(profile)[i] != 0x1c)
continue;
length=(size_t) (GetStringInfoDatum(profile)[i+3] << 8);
length|=GetStringInfoDatum(profile)[i+4];
if (((long) GetStringInfoDatum(profile)[i+1] == dataset) &&
((long) GetStringInfoDatum(profile)[i+2] == record))
{
message=(char *) NULL;
if (~length >= 1)
message=(char *) AcquireQuantumMemory(length+1UL,sizeof(*message));
if (message != (char *) NULL)
{
(void) CopyMagickString(message,(char *) GetStringInfoDatum(
profile)+i+5,length+1);
(void) ConcatenateString(&attribute,message);
(void) ConcatenateString(&attribute,";");
message=DestroyString(message);
}
}
i+=5;
}
if ((attribute == (char *) NULL) || (*attribute == ';'))
{
if (attribute != (char *) NULL)
attribute=DestroyString(attribute);
return(MagickFalse);
}
attribute[strlen(attribute)-1]='\0';
(void) SetImageProperty((Image *) image,key,(const char *) attribute,
exception);
attribute=DestroyString(attribute);
return(MagickTrue);
}
static inline int ReadPropertyByte(const unsigned char **p,size_t *length)
{
int
c;
if (*length < 1)
return(EOF);
c=(int) (*(*p)++);
(*length)--;
return(c);
}
static inline signed int ReadPropertyMSBLong(const unsigned char **p,
size_t *length)
{
union
{
unsigned int
unsigned_value;
signed int
signed_value;
} quantum;
int
c;
register ssize_t
i;
unsigned char
buffer[4];
unsigned int
value;
if (*length < 4)
return(-1);
for (i=0; i < 4; i++)
{
c=(int) (*(*p)++);
(*length)--;
buffer[i]=(unsigned char) c;
}
value=(unsigned int) buffer[0] << 24;
value|=(unsigned int) buffer[1] << 16;
value|=(unsigned int) buffer[2] << 8;
value|=(unsigned int) buffer[3];
quantum.unsigned_value=value & 0xffffffff;
return(quantum.signed_value);
}
static inline signed short ReadPropertyMSBShort(const unsigned char **p,
size_t *length)
{
union
{
unsigned short
unsigned_value;
signed short
signed_value;
} quantum;
int
c;
register ssize_t
i;
unsigned char
buffer[2];
unsigned short
value;
if (*length < 2)
return((unsigned short) ~0);
for (i=0; i < 2; i++)
{
c=(int) (*(*p)++);
(*length)--;
buffer[i]=(unsigned char) c;
}
value=(unsigned short) buffer[0] << 8;
value|=(unsigned short) buffer[1];
quantum.unsigned_value=value & 0xffff;
return(quantum.signed_value);
}
static MagickBooleanType Get8BIMProperty(const Image *image,const char *key,
ExceptionInfo *exception)
{
char
*attribute,
format[MagickPathExtent],
name[MagickPathExtent],
*resource;
const StringInfo
*profile;
const unsigned char
*info;
long
start,
stop;
MagickBooleanType
status;
register ssize_t
i;
size_t
length;
ssize_t
count,
id,
sub_number;
/*
There are no newlines in path names, so it's safe as terminator.
*/
profile=GetImageProfile(image,"8bim");
if (profile == (StringInfo *) NULL)
return(MagickFalse);
count=(ssize_t) sscanf(key,"8BIM:%ld,%ld:%1024[^\n]\n%1024[^\n]",&start,&stop,
name,format);
if ((count != 2) && (count != 3) && (count != 4))
return(MagickFalse);
if (count < 4)
(void) CopyMagickString(format,"SVG",MagickPathExtent);
if (count < 3)
*name='\0';
sub_number=1;
if (*name == '#')
sub_number=(ssize_t) StringToLong(&name[1]);
sub_number=MagickMax(sub_number,1L);
resource=(char *) NULL;
status=MagickFalse;
length=GetStringInfoLength(profile);
info=GetStringInfoDatum(profile);
while ((length > 0) && (status == MagickFalse))
{
if (ReadPropertyByte(&info,&length) != (unsigned char) '8')
continue;
if (ReadPropertyByte(&info,&length) != (unsigned char) 'B')
continue;
if (ReadPropertyByte(&info,&length) != (unsigned char) 'I')
continue;
if (ReadPropertyByte(&info,&length) != (unsigned char) 'M')
continue;
id=(ssize_t) ReadPropertyMSBShort(&info,&length);
if (id < (ssize_t) start)
continue;
if (id > (ssize_t) stop)
continue;
if (resource != (char *) NULL)
resource=DestroyString(resource);
count=(ssize_t) ReadPropertyByte(&info,&length);
if ((count != 0) && ((size_t) count <= length))
{
resource=(char *) NULL;
if (~((size_t) count) >= (MagickPathExtent-1))
resource=(char *) AcquireQuantumMemory((size_t) count+
MagickPathExtent,sizeof(*resource));
if (resource != (char *) NULL)
{
for (i=0; i < (ssize_t) count; i++)
resource[i]=(char) ReadPropertyByte(&info,&length);
resource[count]='\0';
}
}
if ((count & 0x01) == 0)
(void) ReadPropertyByte(&info,&length);
count=(ssize_t) ReadPropertyMSBLong(&info,&length);
if ((count < 0) || ((size_t) count > length))
{
length=0;
continue;
}
if ((*name != '\0') && (*name != '#'))
if ((resource == (char *) NULL) || (LocaleCompare(name,resource) != 0))
{
/*
No name match, scroll forward and try next.
*/
info+=count;
length-=MagickMin(count,(ssize_t) length);
continue;
}
if ((*name == '#') && (sub_number != 1))
{
/*
No numbered match, scroll forward and try next.
*/
sub_number--;
info+=count;
length-=MagickMin(count,(ssize_t) length);
continue;
}
/*
We have the resource of interest.
*/
attribute=(char *) NULL;
if (~((size_t) count) >= (MagickPathExtent-1))
attribute=(char *) AcquireQuantumMemory((size_t) count+MagickPathExtent,
sizeof(*attribute));
if (attribute != (char *) NULL)
{
(void) memcpy(attribute,(char *) info,(size_t) count);
attribute[count]='\0';
info+=count;
length-=MagickMin(count,(ssize_t) length);
if ((id <= 1999) || (id >= 2999))
(void) SetImageProperty((Image *) image,key,(const char *) attribute,
exception);
else
{
char
*path;
if (LocaleCompare(format,"svg") == 0)
path=TraceSVGClippath((unsigned char *) attribute,(size_t) count,
image->columns,image->rows);
else
path=TracePSClippath((unsigned char *) attribute,(size_t) count);
(void) SetImageProperty((Image *) image,key,(const char *) path,
exception);
path=DestroyString(path);
}
attribute=DestroyString(attribute);
status=MagickTrue;
}
}
if (resource != (char *) NULL)
resource=DestroyString(resource);
return(status);
}
static inline signed int ReadPropertySignedLong(const EndianType endian,
const unsigned char *buffer)
{
union
{
unsigned int
unsigned_value;
signed int
signed_value;
} quantum;
unsigned int
value;
if (endian == LSBEndian)
{
value=(unsigned int) buffer[3] << 24;
value|=(unsigned int) buffer[2] << 16;
value|=(unsigned int) buffer[1] << 8;
value|=(unsigned int) buffer[0];
quantum.unsigned_value=value & 0xffffffff;
return(quantum.signed_value);
}
value=(unsigned int) buffer[0] << 24;
value|=(unsigned int) buffer[1] << 16;
value|=(unsigned int) buffer[2] << 8;
value|=(unsigned int) buffer[3];
quantum.unsigned_value=value & 0xffffffff;
return(quantum.signed_value);
}
static inline unsigned int ReadPropertyUnsignedLong(const EndianType endian,
const unsigned char *buffer)
{
unsigned int
value;
if (endian == LSBEndian)
{
value=(unsigned int) buffer[3] << 24;
value|=(unsigned int) buffer[2] << 16;
value|=(unsigned int) buffer[1] << 8;
value|=(unsigned int) buffer[0];
return(value & 0xffffffff);
}
value=(unsigned int) buffer[0] << 24;
value|=(unsigned int) buffer[1] << 16;
value|=(unsigned int) buffer[2] << 8;
value|=(unsigned int) buffer[3];
return(value & 0xffffffff);
}
static inline signed short ReadPropertySignedShort(const EndianType endian,
const unsigned char *buffer)
{
union
{
unsigned short
unsigned_value;
signed short
signed_value;
} quantum;
unsigned short
value;
if (endian == LSBEndian)
{
value=(unsigned short) buffer[1] << 8;
value|=(unsigned short) buffer[0];
quantum.unsigned_value=value & 0xffff;
return(quantum.signed_value);
}
value=(unsigned short) buffer[0] << 8;
value|=(unsigned short) buffer[1];
quantum.unsigned_value=value & 0xffff;
return(quantum.signed_value);
}
static inline unsigned short ReadPropertyUnsignedShort(const EndianType endian,
const unsigned char *buffer)
{
unsigned short
value;
if (endian == LSBEndian)
{
value=(unsigned short) buffer[1] << 8;
value|=(unsigned short) buffer[0];
return(value & 0xffff);
}
value=(unsigned short) buffer[0] << 8;
value|=(unsigned short) buffer[1];
return(value & 0xffff);
}
static MagickBooleanType GetEXIFProperty(const Image *image,
const char *property,ExceptionInfo *exception)
{
#define MaxDirectoryStack 16
#define EXIF_DELIMITER "\n"
#define EXIF_NUM_FORMATS 12
#define EXIF_FMT_BYTE 1
#define EXIF_FMT_STRING 2
#define EXIF_FMT_USHORT 3
#define EXIF_FMT_ULONG 4
#define EXIF_FMT_URATIONAL 5
#define EXIF_FMT_SBYTE 6
#define EXIF_FMT_UNDEFINED 7
#define EXIF_FMT_SSHORT 8
#define EXIF_FMT_SLONG 9
#define EXIF_FMT_SRATIONAL 10
#define EXIF_FMT_SINGLE 11
#define EXIF_FMT_DOUBLE 12
#define TAG_EXIF_OFFSET 0x8769
#define TAG_GPS_OFFSET 0x8825
#define TAG_INTEROP_OFFSET 0xa005
#define EXIFMultipleValues(size,format,arg) \
{ \
ssize_t \
component; \
\
size_t \
len; \
\
unsigned char \
*p1; \
\
len=0; \
p1=p; \
for (component=0; component < components; component++) \
{ \
len+=FormatLocaleString(buffer+len,MagickPathExtent-len,format", ",arg); \
if (len >= (MagickPathExtent-1)) \
len=MagickPathExtent-1; \
p1+=size; \
} \
if (len > 1) \
buffer[len-2]='\0'; \
value=AcquireString(buffer); \
}
#define EXIFMultipleFractions(size,format,arg1,arg2) \
{ \
ssize_t \
component; \
\
size_t \
len; \
\
unsigned char \
*p1; \
\
len=0; \
p1=p; \
for (component=0; component < components; component++) \
{ \
len+=FormatLocaleString(buffer+len,MagickPathExtent-len,format", ", \
(arg1),(arg2)); \
if (len >= (MagickPathExtent-1)) \
len=MagickPathExtent-1; \
p1+=size; \
} \
if (len > 1) \
buffer[len-2]='\0'; \
value=AcquireString(buffer); \
}
typedef struct _DirectoryInfo
{
const unsigned char
*directory;
size_t
entry;
ssize_t
offset;
} DirectoryInfo;
typedef struct _TagInfo
{
size_t
tag;
const char
*description;
} TagInfo;
static TagInfo
EXIFTag[] =
{
{ 0x001, "exif:InteroperabilityIndex" },
{ 0x002, "exif:InteroperabilityVersion" },
{ 0x100, "exif:ImageWidth" },
{ 0x101, "exif:ImageLength" },
{ 0x102, "exif:BitsPerSample" },
{ 0x103, "exif:Compression" },
{ 0x106, "exif:PhotometricInterpretation" },
{ 0x10a, "exif:FillOrder" },
{ 0x10d, "exif:DocumentName" },
{ 0x10e, "exif:ImageDescription" },
{ 0x10f, "exif:Make" },
{ 0x110, "exif:Model" },
{ 0x111, "exif:StripOffsets" },
{ 0x112, "exif:Orientation" },
{ 0x115, "exif:SamplesPerPixel" },
{ 0x116, "exif:RowsPerStrip" },
{ 0x117, "exif:StripByteCounts" },
{ 0x11a, "exif:XResolution" },
{ 0x11b, "exif:YResolution" },
{ 0x11c, "exif:PlanarConfiguration" },
{ 0x11d, "exif:PageName" },
{ 0x11e, "exif:XPosition" },
{ 0x11f, "exif:YPosition" },
{ 0x118, "exif:MinSampleValue" },
{ 0x119, "exif:MaxSampleValue" },
{ 0x120, "exif:FreeOffsets" },
{ 0x121, "exif:FreeByteCounts" },
{ 0x122, "exif:GrayResponseUnit" },
{ 0x123, "exif:GrayResponseCurve" },
{ 0x124, "exif:T4Options" },
{ 0x125, "exif:T6Options" },
{ 0x128, "exif:ResolutionUnit" },
{ 0x12d, "exif:TransferFunction" },
{ 0x131, "exif:Software" },
{ 0x132, "exif:DateTime" },
{ 0x13b, "exif:Artist" },
{ 0x13e, "exif:WhitePoint" },
{ 0x13f, "exif:PrimaryChromaticities" },
{ 0x140, "exif:ColorMap" },
{ 0x141, "exif:HalfToneHints" },
{ 0x142, "exif:TileWidth" },
{ 0x143, "exif:TileLength" },
{ 0x144, "exif:TileOffsets" },
{ 0x145, "exif:TileByteCounts" },
{ 0x14a, "exif:SubIFD" },
{ 0x14c, "exif:InkSet" },
{ 0x14d, "exif:InkNames" },
{ 0x14e, "exif:NumberOfInks" },
{ 0x150, "exif:DotRange" },
{ 0x151, "exif:TargetPrinter" },
{ 0x152, "exif:ExtraSample" },
{ 0x153, "exif:SampleFormat" },
{ 0x154, "exif:SMinSampleValue" },
{ 0x155, "exif:SMaxSampleValue" },
{ 0x156, "exif:TransferRange" },
{ 0x157, "exif:ClipPath" },
{ 0x158, "exif:XClipPathUnits" },
{ 0x159, "exif:YClipPathUnits" },
{ 0x15a, "exif:Indexed" },
{ 0x15b, "exif:JPEGTables" },
{ 0x15f, "exif:OPIProxy" },
{ 0x200, "exif:JPEGProc" },
{ 0x201, "exif:JPEGInterchangeFormat" },
{ 0x202, "exif:JPEGInterchangeFormatLength" },
{ 0x203, "exif:JPEGRestartInterval" },
{ 0x205, "exif:JPEGLosslessPredictors" },
{ 0x206, "exif:JPEGPointTransforms" },
{ 0x207, "exif:JPEGQTables" },
{ 0x208, "exif:JPEGDCTables" },
{ 0x209, "exif:JPEGACTables" },
{ 0x211, "exif:YCbCrCoefficients" },
{ 0x212, "exif:YCbCrSubSampling" },
{ 0x213, "exif:YCbCrPositioning" },
{ 0x214, "exif:ReferenceBlackWhite" },
{ 0x2bc, "exif:ExtensibleMetadataPlatform" },
{ 0x301, "exif:Gamma" },
{ 0x302, "exif:ICCProfileDescriptor" },
{ 0x303, "exif:SRGBRenderingIntent" },
{ 0x320, "exif:ImageTitle" },
{ 0x5001, "exif:ResolutionXUnit" },
{ 0x5002, "exif:ResolutionYUnit" },
{ 0x5003, "exif:ResolutionXLengthUnit" },
{ 0x5004, "exif:ResolutionYLengthUnit" },
{ 0x5005, "exif:PrintFlags" },
{ 0x5006, "exif:PrintFlagsVersion" },
{ 0x5007, "exif:PrintFlagsCrop" },
{ 0x5008, "exif:PrintFlagsBleedWidth" },
{ 0x5009, "exif:PrintFlagsBleedWidthScale" },
{ 0x500A, "exif:HalftoneLPI" },
{ 0x500B, "exif:HalftoneLPIUnit" },
{ 0x500C, "exif:HalftoneDegree" },
{ 0x500D, "exif:HalftoneShape" },
{ 0x500E, "exif:HalftoneMisc" },
{ 0x500F, "exif:HalftoneScreen" },
{ 0x5010, "exif:JPEGQuality" },
{ 0x5011, "exif:GridSize" },
{ 0x5012, "exif:ThumbnailFormat" },
{ 0x5013, "exif:ThumbnailWidth" },
{ 0x5014, "exif:ThumbnailHeight" },
{ 0x5015, "exif:ThumbnailColorDepth" },
{ 0x5016, "exif:ThumbnailPlanes" },
{ 0x5017, "exif:ThumbnailRawBytes" },
{ 0x5018, "exif:ThumbnailSize" },
{ 0x5019, "exif:ThumbnailCompressedSize" },
{ 0x501a, "exif:ColorTransferFunction" },
{ 0x501b, "exif:ThumbnailData" },
{ 0x5020, "exif:ThumbnailImageWidth" },
{ 0x5021, "exif:ThumbnailImageHeight" },
{ 0x5022, "exif:ThumbnailBitsPerSample" },
{ 0x5023, "exif:ThumbnailCompression" },
{ 0x5024, "exif:ThumbnailPhotometricInterp" },
{ 0x5025, "exif:ThumbnailImageDescription" },
{ 0x5026, "exif:ThumbnailEquipMake" },
{ 0x5027, "exif:ThumbnailEquipModel" },
{ 0x5028, "exif:ThumbnailStripOffsets" },
{ 0x5029, "exif:ThumbnailOrientation" },
{ 0x502a, "exif:ThumbnailSamplesPerPixel" },
{ 0x502b, "exif:ThumbnailRowsPerStrip" },
{ 0x502c, "exif:ThumbnailStripBytesCount" },
{ 0x502d, "exif:ThumbnailResolutionX" },
{ 0x502e, "exif:ThumbnailResolutionY" },
{ 0x502f, "exif:ThumbnailPlanarConfig" },
{ 0x5030, "exif:ThumbnailResolutionUnit" },
{ 0x5031, "exif:ThumbnailTransferFunction" },
{ 0x5032, "exif:ThumbnailSoftwareUsed" },
{ 0x5033, "exif:ThumbnailDateTime" },
{ 0x5034, "exif:ThumbnailArtist" },
{ 0x5035, "exif:ThumbnailWhitePoint" },
{ 0x5036, "exif:ThumbnailPrimaryChromaticities" },
{ 0x5037, "exif:ThumbnailYCbCrCoefficients" },
{ 0x5038, "exif:ThumbnailYCbCrSubsampling" },
{ 0x5039, "exif:ThumbnailYCbCrPositioning" },
{ 0x503A, "exif:ThumbnailRefBlackWhite" },
{ 0x503B, "exif:ThumbnailCopyRight" },
{ 0x5090, "exif:LuminanceTable" },
{ 0x5091, "exif:ChrominanceTable" },
{ 0x5100, "exif:FrameDelay" },
{ 0x5101, "exif:LoopCount" },
{ 0x5110, "exif:PixelUnit" },
{ 0x5111, "exif:PixelPerUnitX" },
{ 0x5112, "exif:PixelPerUnitY" },
{ 0x5113, "exif:PaletteHistogram" },
{ 0x1000, "exif:RelatedImageFileFormat" },
{ 0x1001, "exif:RelatedImageLength" },
{ 0x1002, "exif:RelatedImageWidth" },
{ 0x800d, "exif:ImageID" },
{ 0x80e3, "exif:Matteing" },
{ 0x80e4, "exif:DataType" },
{ 0x80e5, "exif:ImageDepth" },
{ 0x80e6, "exif:TileDepth" },
{ 0x828d, "exif:CFARepeatPatternDim" },
{ 0x828e, "exif:CFAPattern2" },
{ 0x828f, "exif:BatteryLevel" },
{ 0x8298, "exif:Copyright" },
{ 0x829a, "exif:ExposureTime" },
{ 0x829d, "exif:FNumber" },
{ 0x83bb, "exif:IPTC/NAA" },
{ 0x84e3, "exif:IT8RasterPadding" },
{ 0x84e5, "exif:IT8ColorTable" },
{ 0x8649, "exif:ImageResourceInformation" },
{ 0x8769, "exif:ExifOffset" }, /* specs as "Exif IFD Pointer"? */
{ 0x8773, "exif:InterColorProfile" },
{ 0x8822, "exif:ExposureProgram" },
{ 0x8824, "exif:SpectralSensitivity" },
{ 0x8825, "exif:GPSInfo" }, /* specs as "GPSInfo IFD Pointer"? */
{ 0x8827, "exif:PhotographicSensitivity" },
{ 0x8828, "exif:OECF" },
{ 0x8829, "exif:Interlace" },
{ 0x882a, "exif:TimeZoneOffset" },
{ 0x882b, "exif:SelfTimerMode" },
{ 0x8830, "exif:SensitivityType" },
{ 0x8831, "exif:StandardOutputSensitivity" },
{ 0x8832, "exif:RecommendedExposureIndex" },
{ 0x8833, "exif:ISOSpeed" },
{ 0x8834, "exif:ISOSpeedLatitudeyyy" },
{ 0x8835, "exif:ISOSpeedLatitudezzz" },
{ 0x9000, "exif:ExifVersion" },
{ 0x9003, "exif:DateTimeOriginal" },
{ 0x9004, "exif:DateTimeDigitized" },
{ 0x9010, "exif:OffsetTime" },
{ 0x9011, "exif:OffsetTimeOriginal" },
{ 0x9012, "exif:OffsetTimeDigitized" },
{ 0x9101, "exif:ComponentsConfiguration" },
{ 0x9102, "exif:CompressedBitsPerPixel" },
{ 0x9201, "exif:ShutterSpeedValue" },
{ 0x9202, "exif:ApertureValue" },
{ 0x9203, "exif:BrightnessValue" },
{ 0x9204, "exif:ExposureBiasValue" },
{ 0x9205, "exif:MaxApertureValue" },
{ 0x9206, "exif:SubjectDistance" },
{ 0x9207, "exif:MeteringMode" },
{ 0x9208, "exif:LightSource" },
{ 0x9209, "exif:Flash" },
{ 0x920a, "exif:FocalLength" },
{ 0x920b, "exif:FlashEnergy" },
{ 0x920c, "exif:SpatialFrequencyResponse" },
{ 0x920d, "exif:Noise" },
{ 0x9214, "exif:SubjectArea" },
{ 0x9290, "exif:SubSecTime" },
{ 0x9291, "exif:SubSecTimeOriginal" },
{ 0x9292, "exif:SubSecTimeDigitized" },
{ 0x9211, "exif:ImageNumber" },
{ 0x9212, "exif:SecurityClassification" },
{ 0x9213, "exif:ImageHistory" },
{ 0x9214, "exif:SubjectArea" },
{ 0x9215, "exif:ExposureIndex" },
{ 0x9216, "exif:TIFF-EPStandardID" },
{ 0x927c, "exif:MakerNote" },
{ 0x9286, "exif:UserComment" },
{ 0x9290, "exif:SubSecTime" },
{ 0x9291, "exif:SubSecTimeOriginal" },
{ 0x9292, "exif:SubSecTimeDigitized" },
{ 0x9400, "exif:Temperature" },
{ 0x9401, "exif:Humidity" },
{ 0x9402, "exif:Pressure" },
{ 0x9403, "exif:WaterDepth" },
{ 0x9404, "exif:Acceleration" },
{ 0x9405, "exif:CameraElevationAngle" },
{ 0x9C9b, "exif:WinXP-Title" },
{ 0x9C9c, "exif:WinXP-Comments" },
{ 0x9C9d, "exif:WinXP-Author" },
{ 0x9C9e, "exif:WinXP-Keywords" },
{ 0x9C9f, "exif:WinXP-Subject" },
{ 0xa000, "exif:FlashPixVersion" },
{ 0xa001, "exif:ColorSpace" },
{ 0xa002, "exif:PixelXDimension" },
{ 0xa003, "exif:PixelYDimension" },
{ 0xa004, "exif:RelatedSoundFile" },
{ 0xa005, "exif:InteroperabilityOffset" },
{ 0xa20b, "exif:FlashEnergy" },
{ 0xa20c, "exif:SpatialFrequencyResponse" },
{ 0xa20d, "exif:Noise" },
{ 0xa20e, "exif:FocalPlaneXResolution" },
{ 0xa20f, "exif:FocalPlaneYResolution" },
{ 0xa210, "exif:FocalPlaneResolutionUnit" },
{ 0xa214, "exif:SubjectLocation" },
{ 0xa215, "exif:ExposureIndex" },
{ 0xa216, "exif:TIFF/EPStandardID" },
{ 0xa217, "exif:SensingMethod" },
{ 0xa300, "exif:FileSource" },
{ 0xa301, "exif:SceneType" },
{ 0xa302, "exif:CFAPattern" },
{ 0xa401, "exif:CustomRendered" },
{ 0xa402, "exif:ExposureMode" },
{ 0xa403, "exif:WhiteBalance" },
{ 0xa404, "exif:DigitalZoomRatio" },
{ 0xa405, "exif:FocalLengthIn35mmFilm" },
{ 0xa406, "exif:SceneCaptureType" },
{ 0xa407, "exif:GainControl" },
{ 0xa408, "exif:Contrast" },
{ 0xa409, "exif:Saturation" },
{ 0xa40a, "exif:Sharpness" },
{ 0xa40b, "exif:DeviceSettingDescription" },
{ 0xa40c, "exif:SubjectDistanceRange" },
{ 0xa420, "exif:ImageUniqueID" },
{ 0xa430, "exif:CameraOwnerName" },
{ 0xa431, "exif:BodySerialNumber" },
{ 0xa432, "exif:LensSpecification" },
{ 0xa433, "exif:LensMake" },
{ 0xa434, "exif:LensModel" },
{ 0xa435, "exif:LensSerialNumber" },
{ 0xc4a5, "exif:PrintImageMatching" },
{ 0xa500, "exif:Gamma" },
{ 0xc640, "exif:CR2Slice" },
{ 0x10000, "exif:GPSVersionID" },
{ 0x10001, "exif:GPSLatitudeRef" },
{ 0x10002, "exif:GPSLatitude" },
{ 0x10003, "exif:GPSLongitudeRef" },
{ 0x10004, "exif:GPSLongitude" },
{ 0x10005, "exif:GPSAltitudeRef" },
{ 0x10006, "exif:GPSAltitude" },
{ 0x10007, "exif:GPSTimeStamp" },
{ 0x10008, "exif:GPSSatellites" },
{ 0x10009, "exif:GPSStatus" },
{ 0x1000a, "exif:GPSMeasureMode" },
{ 0x1000b, "exif:GPSDop" },
{ 0x1000c, "exif:GPSSpeedRef" },
{ 0x1000d, "exif:GPSSpeed" },
{ 0x1000e, "exif:GPSTrackRef" },
{ 0x1000f, "exif:GPSTrack" },
{ 0x10010, "exif:GPSImgDirectionRef" },
{ 0x10011, "exif:GPSImgDirection" },
{ 0x10012, "exif:GPSMapDatum" },
{ 0x10013, "exif:GPSDestLatitudeRef" },
{ 0x10014, "exif:GPSDestLatitude" },
{ 0x10015, "exif:GPSDestLongitudeRef" },
{ 0x10016, "exif:GPSDestLongitude" },
{ 0x10017, "exif:GPSDestBearingRef" },
{ 0x10018, "exif:GPSDestBearing" },
{ 0x10019, "exif:GPSDestDistanceRef" },
{ 0x1001a, "exif:GPSDestDistance" },
{ 0x1001b, "exif:GPSProcessingMethod" },
{ 0x1001c, "exif:GPSAreaInformation" },
{ 0x1001d, "exif:GPSDateStamp" },
{ 0x1001e, "exif:GPSDifferential" },
{ 0x1001f, "exif:GPSHPositioningError" },
{ 0x00000, (const char *) NULL }
}; /* http://www.cipa.jp/std/documents/e/DC-008-Translation-2016-E.pdf */
const StringInfo
*profile;
const unsigned char
*directory,
*exif;
DirectoryInfo
directory_stack[MaxDirectoryStack];
EndianType
endian;
MagickBooleanType
status;
register ssize_t
i;
size_t
entry,
length,
number_entries,
tag,
tag_value;
SplayTreeInfo
*exif_resources;
ssize_t
all,
id,
level,
offset,
tag_offset;
static int
tag_bytes[] = {0, 1, 1, 2, 4, 8, 1, 1, 2, 4, 8, 4, 8};
/*
If EXIF data exists, then try to parse the request for a tag.
*/
profile=GetImageProfile(image,"exif");
if (profile == (const StringInfo *) NULL)
return(MagickFalse);
if ((property == (const char *) NULL) || (*property == '\0'))
return(MagickFalse);
while (isspace((int) ((unsigned char) *property)) != 0)
property++;
if (strlen(property) <= 5)
return(MagickFalse);
all=0;
tag=(~0UL);
switch (*(property+5))
{
case '*':
{
/*
Caller has asked for all the tags in the EXIF data.
*/
tag=0;
all=1; /* return the data in description=value format */
break;
}
case '!':
{
tag=0;
all=2; /* return the data in tagid=value format */
break;
}
case '#':
case '@':
{
int
c;
size_t
n;
/*
Check for a hex based tag specification first.
*/
tag=(*(property+5) == '@') ? 1UL : 0UL;
property+=6;
n=strlen(property);
if (n != 4)
return(MagickFalse);
/*
Parse tag specification as a hex number.
*/
n/=4;
do
{
for (i=(ssize_t) n-1L; i >= 0; i--)
{
c=(*property++);
tag<<=4;
if ((c >= '0') && (c <= '9'))
tag|=(c-'0');
else
if ((c >= 'A') && (c <= 'F'))
tag|=(c-('A'-10));
else
if ((c >= 'a') && (c <= 'f'))
tag|=(c-('a'-10));
else
return(MagickFalse);
}
} while (*property != '\0');
break;
}
default:
{
/*
Try to match the text with a tag name instead.
*/
for (i=0; ; i++)
{
if (EXIFTag[i].tag == 0)
break;
if (LocaleCompare(EXIFTag[i].description,property) == 0)
{
tag=(size_t) EXIFTag[i].tag;
break;
}
}
break;
}
}
if (tag == (~0UL))
return(MagickFalse);
length=GetStringInfoLength(profile);
if (length < 6)
return(MagickFalse);
exif=GetStringInfoDatum(profile);
while (length != 0)
{
if (ReadPropertyByte(&exif,&length) != 0x45)
continue;
if (ReadPropertyByte(&exif,&length) != 0x78)
continue;
if (ReadPropertyByte(&exif,&length) != 0x69)
continue;
if (ReadPropertyByte(&exif,&length) != 0x66)
continue;
if (ReadPropertyByte(&exif,&length) != 0x00)
continue;
if (ReadPropertyByte(&exif,&length) != 0x00)
continue;
break;
}
if (length < 16)
return(MagickFalse);
id=(ssize_t) ReadPropertySignedShort(LSBEndian,exif);
endian=LSBEndian;
if (id == 0x4949)
endian=LSBEndian;
else
if (id == 0x4D4D)
endian=MSBEndian;
else
return(MagickFalse);
if (ReadPropertyUnsignedShort(endian,exif+2) != 0x002a)
return(MagickFalse);
/*
This the offset to the first IFD.
*/
offset=(ssize_t) ReadPropertySignedLong(endian,exif+4);
if ((offset < 0) || (size_t) offset >= length)
return(MagickFalse);
/*
Set the pointer to the first IFD and follow it were it leads.
*/
status=MagickFalse;
directory=exif+offset;
level=0;
entry=0;
tag_offset=0;
exif_resources=NewSplayTree((int (*)(const void *,const void *)) NULL,
(void *(*)(void *)) NULL,(void *(*)(void *)) NULL);
do
{
/*
If there is anything on the stack then pop it off.
*/
if (level > 0)
{
level--;
directory=directory_stack[level].directory;
entry=directory_stack[level].entry;
tag_offset=directory_stack[level].offset;
}
if ((directory < exif) || (directory > (exif+length-2)))
break;
/*
Determine how many entries there are in the current IFD.
*/
number_entries=(size_t) ReadPropertyUnsignedShort(endian,directory);
for ( ; entry < number_entries; entry++)
{
register unsigned char
*p,
*q;
size_t
format;
ssize_t
components,
number_bytes;
q=(unsigned char *) (directory+(12*entry)+2);
if (q > (exif+length-12))
break; /* corrupt EXIF */
if (GetValueFromSplayTree(exif_resources,q) == q)
break;
(void) AddValueToSplayTree(exif_resources,q,q);
tag_value=(size_t) ReadPropertyUnsignedShort(endian,q)+tag_offset;
format=(size_t) ReadPropertyUnsignedShort(endian,q+2);
if (format >= (sizeof(tag_bytes)/sizeof(*tag_bytes)))
break;
components=(ssize_t) ReadPropertySignedLong(endian,q+4);
if (components < 0)
break; /* corrupt EXIF */
number_bytes=(size_t) components*tag_bytes[format];
if (number_bytes < components)
break; /* prevent overflow */
if (number_bytes <= 4)
p=q+8;
else
{
ssize_t
dir_offset;
/*
The directory entry contains an offset.
*/
dir_offset=(ssize_t) ReadPropertySignedLong(endian,q+8);
if ((dir_offset < 0) || (size_t) dir_offset >= length)
continue;
if ((ssize_t) (dir_offset+number_bytes) < dir_offset)
continue; /* prevent overflow */
if ((size_t) (dir_offset+number_bytes) > length)
continue;
p=(unsigned char *) (exif+dir_offset);
}
if ((all != 0) || (tag == (size_t) tag_value))
{
char
buffer[MagickPathExtent],
*value;
value=(char *) NULL;
*buffer='\0';
switch (format)
{
case EXIF_FMT_BYTE:
case EXIF_FMT_UNDEFINED:
{
EXIFMultipleValues(1,"%.20g",(double) (*(unsigned char *) p1));
break;
}
case EXIF_FMT_SBYTE:
{
EXIFMultipleValues(1,"%.20g",(double) (*(signed char *) p1));
break;
}
case EXIF_FMT_SSHORT:
{
EXIFMultipleValues(2,"%hd",ReadPropertySignedShort(endian,p1));
break;
}
case EXIF_FMT_USHORT:
{
EXIFMultipleValues(2,"%hu",ReadPropertyUnsignedShort(endian,p1));
break;
}
case EXIF_FMT_ULONG:
{
EXIFMultipleValues(4,"%.20g",(double)
ReadPropertyUnsignedLong(endian,p1));
break;
}
case EXIF_FMT_SLONG:
{
EXIFMultipleValues(4,"%.20g",(double)
ReadPropertySignedLong(endian,p1));
break;
}
case EXIF_FMT_URATIONAL:
{
EXIFMultipleFractions(8,"%.20g/%.20g",(double)
ReadPropertyUnsignedLong(endian,p1),(double)
ReadPropertyUnsignedLong(endian,p1+4));
break;
}
case EXIF_FMT_SRATIONAL:
{
EXIFMultipleFractions(8,"%.20g/%.20g",(double)
ReadPropertySignedLong(endian,p1),(double)
ReadPropertySignedLong(endian,p1+4));
break;
}
case EXIF_FMT_SINGLE:
{
EXIFMultipleValues(4,"%f",(double) *(float *) p1);
break;
}
case EXIF_FMT_DOUBLE:
{
EXIFMultipleValues(8,"%f",*(double *) p1);
break;
}
default:
case EXIF_FMT_STRING:
{
value=(char *) NULL;
if (~((size_t) number_bytes) >= 1)
value=(char *) AcquireQuantumMemory((size_t) number_bytes+1UL,
sizeof(*value));
if (value != (char *) NULL)
{
for (i=0; i < (ssize_t) number_bytes; i++)
{
value[i]='.';
if ((isprint((int) p[i]) != 0) || (p[i] == '\0'))
value[i]=(char) p[i];
}
value[i]='\0';
}
break;
}
}
if (value != (char *) NULL)
{
char
*key;
key=AcquireString(property);
switch (all)
{
case 1:
{
const char
*description;
description="unknown";
for (i=0; ; i++)
{
if (EXIFTag[i].tag == 0)
break;
if (EXIFTag[i].tag == tag_value)
{
description=EXIFTag[i].description;
break;
}
}
(void) FormatLocaleString(key,MagickPathExtent,"%s",
description);
if (level == 2)
(void) SubstituteString(&key,"exif:","exif:thumbnail:");
break;
}
case 2:
{
if (tag_value < 0x10000)
(void) FormatLocaleString(key,MagickPathExtent,"#%04lx",
(unsigned long) tag_value);
else
if (tag_value < 0x20000)
(void) FormatLocaleString(key,MagickPathExtent,"@%04lx",
(unsigned long) (tag_value & 0xffff));
else
(void) FormatLocaleString(key,MagickPathExtent,"unknown");
break;
}
default:
{
if (level == 2)
(void) SubstituteString(&key,"exif:","exif:thumbnail:");
}
}
if ((image->properties == (void *) NULL) ||
(GetValueFromSplayTree((SplayTreeInfo *) image->properties,
key) == (const void *) NULL))
(void) SetImageProperty((Image *) image,key,value,exception);
value=DestroyString(value);
key=DestroyString(key);
status=MagickTrue;
}
}
if ((tag_value == TAG_EXIF_OFFSET) ||
(tag_value == TAG_INTEROP_OFFSET) || (tag_value == TAG_GPS_OFFSET))
{
ssize_t
tag_offset1;
tag_offset1=(ssize_t) ReadPropertySignedLong(endian,p);
if (((size_t) tag_offset1 < length) &&
(level < (MaxDirectoryStack-2)))
{
ssize_t
tag_offset2;
tag_offset2=(ssize_t) ((tag_value == TAG_GPS_OFFSET) ? 0x10000 :
0);
directory_stack[level].directory=directory;
entry++;
directory_stack[level].entry=entry;
directory_stack[level].offset=tag_offset;
level++;
directory_stack[level].directory=exif+tag_offset1;
directory_stack[level].offset=tag_offset2;
directory_stack[level].entry=0;
level++;
if ((directory+2+(12*number_entries)) > (exif+length))
break;
tag_offset1=(ssize_t) ReadPropertySignedLong(endian,directory+
2+(12*number_entries));
if ((tag_offset1 != 0) && ((size_t) tag_offset1 < length) &&
(level < (MaxDirectoryStack-2)))
{
directory_stack[level].directory=exif+tag_offset1;
directory_stack[level].entry=0;
directory_stack[level].offset=tag_offset2;
level++;
}
}
break;
}
}
} while (level > 0);
exif_resources=DestroySplayTree(exif_resources);
return(status);
}
static MagickBooleanType GetICCProperty(const Image *image,const char *property,
ExceptionInfo *exception)
{
const StringInfo
*profile;
magick_unreferenced(property);
profile=GetImageProfile(image,"icc");
if (profile == (StringInfo *) NULL)
profile=GetImageProfile(image,"icm");
if (profile == (StringInfo *) NULL)
return(MagickFalse);
if (GetStringInfoLength(profile) < 128)
return(MagickFalse); /* minimum ICC profile length */
#if defined(MAGICKCORE_LCMS_DELEGATE)
{
cmsHPROFILE
icc_profile;
icc_profile=cmsOpenProfileFromMem(GetStringInfoDatum(profile),
(cmsUInt32Number) GetStringInfoLength(profile));
if (icc_profile != (cmsHPROFILE *) NULL)
{
#if defined(LCMS_VERSION) && (LCMS_VERSION < 2000)
const char
*name;
name=cmsTakeProductName(icc_profile);
if (name != (const char *) NULL)
(void) SetImageProperty((Image *) image,"icc:name",name,exception);
#else
char
info[MagickPathExtent];
unsigned int
extent;
(void) memset(info,0,sizeof(info));
extent=cmsGetProfileInfoASCII(icc_profile,cmsInfoDescription,"en","US",
NULL,0);
if (extent != 0)
{
extent=cmsGetProfileInfoASCII(icc_profile,cmsInfoDescription,"en",
"US",info,MagickMin(MagickPathExtent-1,extent));
(void) SetImageProperty((Image *) image,"icc:description",info,
exception);
}
extent=cmsGetProfileInfoASCII(icc_profile,cmsInfoManufacturer,"en","US",
NULL,0);
if (extent != 0)
{
extent=cmsGetProfileInfoASCII(icc_profile,cmsInfoManufacturer,"en",
"US",info,MagickMin(MagickPathExtent-1,extent));
(void) SetImageProperty((Image *) image,"icc:manufacturer",info,
exception);
}
extent=cmsGetProfileInfoASCII(icc_profile,cmsInfoModel,"en","US",
NULL,0);
if (extent != 0)
{
extent=cmsGetProfileInfoASCII(icc_profile,cmsInfoModel,"en","US",
info,MagickMin(MagickPathExtent-1,extent));
(void) SetImageProperty((Image *) image,"icc:model",info,exception);
}
extent=cmsGetProfileInfoASCII(icc_profile,cmsInfoCopyright,"en","US",
NULL,0);
if (extent != 0)
{
extent=cmsGetProfileInfoASCII(icc_profile,cmsInfoCopyright,"en",
"US",info,MagickMin(MagickPathExtent-1,extent));
(void) SetImageProperty((Image *) image,"icc:copyright",info,
exception);
}
#endif
(void) cmsCloseProfile(icc_profile);
}
}
#endif
return(MagickTrue);
}
static MagickBooleanType SkipXMPValue(const char *value)
{
if (value == (const char*) NULL)
return(MagickTrue);
while (*value != '\0')
{
if (isspace((int) ((unsigned char) *value)) == 0)
return(MagickFalse);
value++;
}
return(MagickTrue);
}
static MagickBooleanType GetXMPProperty(const Image *image,const char *property)
{
char
*xmp_profile;
const char
*content;
const StringInfo
*profile;
ExceptionInfo
*exception;
MagickBooleanType
status;
register const char
*p;
XMLTreeInfo
*child,
*description,
*node,
*rdf,
*xmp;
profile=GetImageProfile(image,"xmp");
if (profile == (StringInfo *) NULL)
return(MagickFalse);
if (GetStringInfoLength(profile) < 17)
return(MagickFalse);
if ((property == (const char *) NULL) || (*property == '\0'))
return(MagickFalse);
xmp_profile=StringInfoToString(profile);
if (xmp_profile == (char *) NULL)
return(MagickFalse);
for (p=xmp_profile; *p != '\0'; p++)
if ((*p == '<') && (*(p+1) == 'x'))
break;
exception=AcquireExceptionInfo();
xmp=NewXMLTree((char *) p,exception);
xmp_profile=DestroyString(xmp_profile);
exception=DestroyExceptionInfo(exception);
if (xmp == (XMLTreeInfo *) NULL)
return(MagickFalse);
status=MagickFalse;
rdf=GetXMLTreeChild(xmp,"rdf:RDF");
if (rdf != (XMLTreeInfo *) NULL)
{
if (image->properties == (void *) NULL)
((Image *) image)->properties=NewSplayTree(CompareSplayTreeString,
RelinquishMagickMemory,RelinquishMagickMemory);
description=GetXMLTreeChild(rdf,"rdf:Description");
while (description != (XMLTreeInfo *) NULL)
{
char
*xmp_namespace;
node=GetXMLTreeChild(description,(const char *) NULL);
while (node != (XMLTreeInfo *) NULL)
{
child=GetXMLTreeChild(node,(const char *) NULL);
content=GetXMLTreeContent(node);
if ((child == (XMLTreeInfo *) NULL) &&
(SkipXMPValue(content) == MagickFalse))
{
xmp_namespace=ConstantString(GetXMLTreeTag(node));
(void) SubstituteString(&xmp_namespace,"exif:","xmp:");
(void) AddValueToSplayTree((SplayTreeInfo *) image->properties,
xmp_namespace,ConstantString(content));
}
while (child != (XMLTreeInfo *) NULL)
{
content=GetXMLTreeContent(child);
if (SkipXMPValue(content) == MagickFalse)
{
xmp_namespace=ConstantString(GetXMLTreeTag(node));
(void) SubstituteString(&xmp_namespace,"exif:","xmp:");
(void) AddValueToSplayTree((SplayTreeInfo *) image->properties,
xmp_namespace,ConstantString(content));
}
child=GetXMLTreeSibling(child);
}
node=GetXMLTreeSibling(node);
}
description=GetNextXMLTreeTag(description);
}
}
xmp=DestroyXMLTree(xmp);
return(status);
}
static char *TracePSClippath(const unsigned char *blob,size_t length)
{
char
*path,
*message;
MagickBooleanType
in_subpath;
PointInfo
first[3],
last[3],
point[3];
register ssize_t
i,
x;
ssize_t
knot_count,
selector,
y;
path=AcquireString((char *) NULL);
if (path == (char *) NULL)
return((char *) NULL);
message=AcquireString((char *) NULL);
(void) FormatLocaleString(message,MagickPathExtent,"/ClipImage\n");
(void) ConcatenateString(&path,message);
(void) FormatLocaleString(message,MagickPathExtent,"{\n");
(void) ConcatenateString(&path,message);
(void) FormatLocaleString(message,MagickPathExtent,
" /c {curveto} bind def\n");
(void) ConcatenateString(&path,message);
(void) FormatLocaleString(message,MagickPathExtent,
" /l {lineto} bind def\n");
(void) ConcatenateString(&path,message);
(void) FormatLocaleString(message,MagickPathExtent,
" /m {moveto} bind def\n");
(void) ConcatenateString(&path,message);
(void) FormatLocaleString(message,MagickPathExtent,
" /v {currentpoint 6 2 roll curveto} bind def\n");
(void) ConcatenateString(&path,message);
(void) FormatLocaleString(message,MagickPathExtent,
" /y {2 copy curveto} bind def\n");
(void) ConcatenateString(&path,message);
(void) FormatLocaleString(message,MagickPathExtent,
" /z {closepath} bind def\n");
(void) ConcatenateString(&path,message);
(void) FormatLocaleString(message,MagickPathExtent," newpath\n");
(void) ConcatenateString(&path,message);
/*
The clipping path format is defined in "Adobe Photoshop File Formats
Specification" version 6.0 downloadable from adobe.com.
*/
(void) memset(point,0,sizeof(point));
(void) memset(first,0,sizeof(first));
(void) memset(last,0,sizeof(last));
knot_count=0;
in_subpath=MagickFalse;
while (length > 0)
{
selector=(ssize_t) ReadPropertyMSBShort(&blob,&length);
switch (selector)
{
case 0:
case 3:
{
if (knot_count != 0)
{
blob+=24;
length-=MagickMin(24,(ssize_t) length);
break;
}
/*
Expected subpath length record.
*/
knot_count=(ssize_t) ReadPropertyMSBShort(&blob,&length);
blob+=22;
length-=MagickMin(22,(ssize_t) length);
break;
}
case 1:
case 2:
case 4:
case 5:
{
if (knot_count == 0)
{
/*
Unexpected subpath knot
*/
blob+=24;
length-=MagickMin(24,(ssize_t) length);
break;
}
/*
Add sub-path knot
*/
for (i=0; i < 3; i++)
{
size_t
xx,
yy;
yy=(size_t) ReadPropertyMSBLong(&blob,&length);
xx=(size_t) ReadPropertyMSBLong(&blob,&length);
x=(ssize_t) xx;
if (xx > 2147483647)
x=(ssize_t) xx-4294967295U-1;
y=(ssize_t) yy;
if (yy > 2147483647)
y=(ssize_t) yy-4294967295U-1;
point[i].x=(double) x/4096/4096;
point[i].y=1.0-(double) y/4096/4096;
}
if (in_subpath == MagickFalse)
{
(void) FormatLocaleString(message,MagickPathExtent," %g %g m\n",
point[1].x,point[1].y);
for (i=0; i < 3; i++)
{
first[i]=point[i];
last[i]=point[i];
}
}
else
{
/*
Handle special cases when Bezier curves are used to describe
corners and straight lines.
*/
if ((last[1].x == last[2].x) && (last[1].y == last[2].y) &&
(point[0].x == point[1].x) && (point[0].y == point[1].y))
(void) FormatLocaleString(message,MagickPathExtent,
" %g %g l\n",point[1].x,point[1].y);
else
if ((last[1].x == last[2].x) && (last[1].y == last[2].y))
(void) FormatLocaleString(message,MagickPathExtent,
" %g %g %g %g v\n",point[0].x,point[0].y,
point[1].x,point[1].y);
else
if ((point[0].x == point[1].x) && (point[0].y == point[1].y))
(void) FormatLocaleString(message,MagickPathExtent,
" %g %g %g %g y\n",last[2].x,last[2].y,
point[1].x,point[1].y);
else
(void) FormatLocaleString(message,MagickPathExtent,
" %g %g %g %g %g %g c\n",last[2].x,
last[2].y,point[0].x,point[0].y,point[1].x,point[1].y);
for (i=0; i < 3; i++)
last[i]=point[i];
}
(void) ConcatenateString(&path,message);
in_subpath=MagickTrue;
knot_count--;
/*
Close the subpath if there are no more knots.
*/
if (knot_count == 0)
{
/*
Same special handling as above except we compare to the
first point in the path and close the path.
*/
if ((last[1].x == last[2].x) && (last[1].y == last[2].y) &&
(first[0].x == first[1].x) && (first[0].y == first[1].y))
(void) FormatLocaleString(message,MagickPathExtent,
" %g %g l z\n",first[1].x,first[1].y);
else
if ((last[1].x == last[2].x) && (last[1].y == last[2].y))
(void) FormatLocaleString(message,MagickPathExtent,
" %g %g %g %g v z\n",first[0].x,first[0].y,
first[1].x,first[1].y);
else
if ((first[0].x == first[1].x) && (first[0].y == first[1].y))
(void) FormatLocaleString(message,MagickPathExtent,
" %g %g %g %g y z\n",last[2].x,last[2].y,
first[1].x,first[1].y);
else
(void) FormatLocaleString(message,MagickPathExtent,
" %g %g %g %g %g %g c z\n",last[2].x,
last[2].y,first[0].x,first[0].y,first[1].x,first[1].y);
(void) ConcatenateString(&path,message);
in_subpath=MagickFalse;
}
break;
}
case 6:
case 7:
case 8:
default:
{
blob+=24;
length-=MagickMin(24,(ssize_t) length);
break;
}
}
}
/*
Returns an empty PS path if the path has no knots.
*/
(void) FormatLocaleString(message,MagickPathExtent," eoclip\n");
(void) ConcatenateString(&path,message);
(void) FormatLocaleString(message,MagickPathExtent,"} bind def");
(void) ConcatenateString(&path,message);
message=DestroyString(message);
return(path);
}
static char *TraceSVGClippath(const unsigned char *blob,size_t length,
const size_t columns,const size_t rows)
{
char
*path,
*message;
MagickBooleanType
in_subpath;
PointInfo
first[3],
last[3],
point[3];
register ssize_t
i;
ssize_t
knot_count,
selector,
x,
y;
path=AcquireString((char *) NULL);
if (path == (char *) NULL)
return((char *) NULL);
message=AcquireString((char *) NULL);
(void) FormatLocaleString(message,MagickPathExtent,(
"<?xml version=\"1.0\" encoding=\"iso-8859-1\"?>\n"
"<svg xmlns=\"http://www.w3.org/2000/svg\""
" width=\"%.20g\" height=\"%.20g\">\n"
"<g>\n"
"<path fill-rule=\"evenodd\" style=\"fill:#000000;stroke:#000000;"
"stroke-width:0;stroke-antialiasing:false\" d=\"\n"),(double) columns,
(double) rows);
(void) ConcatenateString(&path,message);
(void) memset(point,0,sizeof(point));
(void) memset(first,0,sizeof(first));
(void) memset(last,0,sizeof(last));
knot_count=0;
in_subpath=MagickFalse;
while (length != 0)
{
selector=(ssize_t) ReadPropertyMSBShort(&blob,&length);
switch (selector)
{
case 0:
case 3:
{
if (knot_count != 0)
{
blob+=24;
length-=MagickMin(24,(ssize_t) length);
break;
}
/*
Expected subpath length record.
*/
knot_count=(ssize_t) ReadPropertyMSBShort(&blob,&length);
blob+=22;
length-=MagickMin(22,(ssize_t) length);
break;
}
case 1:
case 2:
case 4:
case 5:
{
if (knot_count == 0)
{
/*
Unexpected subpath knot.
*/
blob+=24;
length-=MagickMin(24,(ssize_t) length);
break;
}
/*
Add sub-path knot
*/
for (i=0; i < 3; i++)
{
unsigned int
xx,
yy;
yy=(unsigned int) ReadPropertyMSBLong(&blob,&length);
xx=(unsigned int) ReadPropertyMSBLong(&blob,&length);
x=(ssize_t) xx;
if (xx > 2147483647)
x=(ssize_t) xx-4294967295U-1;
y=(ssize_t) yy;
if (yy > 2147483647)
y=(ssize_t) yy-4294967295U-1;
point[i].x=(double) x*columns/4096/4096;
point[i].y=(double) y*rows/4096/4096;
}
if (in_subpath == MagickFalse)
{
(void) FormatLocaleString(message,MagickPathExtent,"M %g %g\n",
point[1].x,point[1].y);
for (i=0; i < 3; i++)
{
first[i]=point[i];
last[i]=point[i];
}
}
else
{
/*
Handle special cases when Bezier curves are used to describe
corners and straight lines.
*/
if (((last[1].x == last[2].x) || (last[1].y == last[2].y)) &&
(point[0].x == point[1].x) && (point[0].y == point[1].y))
(void) FormatLocaleString(message,MagickPathExtent,
"L %g %g\n",point[1].x,point[1].y);
else
(void) FormatLocaleString(message,MagickPathExtent,
"C %g %g %g %g %g %g\n",last[2].x,last[2].y,point[0].x,
point[0].y,point[1].x,point[1].y);
for (i=0; i < 3; i++)
last[i]=point[i];
}
(void) ConcatenateString(&path,message);
in_subpath=MagickTrue;
knot_count--;
/*
Close the subpath if there are no more knots.
*/
if (knot_count == 0)
{
/*
Same special handling as above except we compare to the
first point in the path and close the path.
*/
if (((last[1].x == last[2].x) || (last[1].y == last[2].y)) &&
(first[0].x == first[1].x) && (first[0].y == first[1].y))
(void) FormatLocaleString(message,MagickPathExtent,
"L %g %g Z\n",first[1].x,first[1].y);
else
(void) FormatLocaleString(message,MagickPathExtent,
"C %g %g %g %g %g %g Z\n",last[2].x,last[2].y,first[0].x,
first[0].y,first[1].x,first[1].y);
(void) ConcatenateString(&path,message);
in_subpath=MagickFalse;
}
break;
}
case 6:
case 7:
case 8:
default:
{
blob+=24;
length-=MagickMin(24,(ssize_t) length);
break;
}
}
}
/*
Return an empty SVG image if the path does not have knots.
*/
(void) ConcatenateString(&path,"\"/>\n</g>\n</svg>\n");
message=DestroyString(message);
return(path);
}
MagickExport const char *GetImageProperty(const Image *image,
const char *property,ExceptionInfo *exception)
{
register const char
*p;
assert(image != (Image *) NULL);
assert(image->signature == MagickCoreSignature);
if (image->debug != MagickFalse)
(void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
p=(const char *) NULL;
if (image->properties != (void *) NULL)
{
if (property == (const char *) NULL)
return((const char *) GetRootValueFromSplayTree((SplayTreeInfo *)
image->properties));
p=(const char *) GetValueFromSplayTree((SplayTreeInfo *)
image->properties,property);
if (p != (const char *) NULL)
return(p);
}
if ((property == (const char *) NULL) ||
(strchr(property,':') == (char *) NULL))
return(p);
switch (*property)
{
case '8':
{
if (LocaleNCompare("8bim:",property,5) == 0)
{
(void) Get8BIMProperty(image,property,exception);
break;
}
break;
}
case 'E':
case 'e':
{
if (LocaleNCompare("exif:",property,5) == 0)
{
(void) GetEXIFProperty(image,property,exception);
break;
}
break;
}
case 'I':
case 'i':
{
if ((LocaleNCompare("icc:",property,4) == 0) ||
(LocaleNCompare("icm:",property,4) == 0))
{
(void) GetICCProperty(image,property,exception);
break;
}
if (LocaleNCompare("iptc:",property,5) == 0)
{
(void) GetIPTCProperty(image,property,exception);
break;
}
break;
}
case 'X':
case 'x':
{
if (LocaleNCompare("xmp:",property,4) == 0)
{
(void) GetXMPProperty(image,property);
break;
}
break;
}
default:
break;
}
if (image->properties != (void *) NULL)
{
p=(const char *) GetValueFromSplayTree((SplayTreeInfo *)
image->properties,property);
return(p);
}
return((const char *) NULL);
}
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
+ G e t M a g i c k P r o p e r t y %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% GetMagickProperty() gets attributes or calculated values that is associated
% with a fixed known property name, or single letter property. It may be
% called if no image is defined (IMv7), in which case only global image_info
% values are available:
%
% \n newline
% \r carriage return
% < less-than character.
% > greater-than character.
% & ampersand character.
% %% a percent sign
% %b file size of image read in
% %c comment meta-data property
% %d directory component of path
% %e filename extension or suffix
% %f filename (including suffix)
% %g layer canvas page geometry (equivalent to "%Wx%H%X%Y")
% %h current image height in pixels
% %i image filename (note: becomes output filename for "info:")
% %k CALCULATED: number of unique colors
% %l label meta-data property
% %m image file format (file magic)
% %n number of images in current image sequence
% %o output filename (used for delegates)
% %p index of image in current image list
% %q quantum depth (compile-time constant)
% %r image class and colorspace
% %s scene number (from input unless re-assigned)
% %t filename without directory or extension (suffix)
% %u unique temporary filename (used for delegates)
% %w current width in pixels
% %x x resolution (density)
% %y y resolution (density)
% %z image depth (as read in unless modified, image save depth)
% %A image transparency channel enabled (true/false)
% %B file size of image in bytes
% %C image compression type
% %D image GIF dispose method
% %G original image size (%wx%h; before any resizes)
% %H page (canvas) height
% %M Magick filename (original file exactly as given, including read mods)
% %O page (canvas) offset ( = %X%Y )
% %P page (canvas) size ( = %Wx%H )
% %Q image compression quality ( 0 = default )
% %S ?? scenes ??
% %T image time delay (in centi-seconds)
% %U image resolution units
% %W page (canvas) width
% %X page (canvas) x offset (including sign)
% %Y page (canvas) y offset (including sign)
% %Z unique filename (used for delegates)
% %@ CALCULATED: trim bounding box (without actually trimming)
% %# CALCULATED: 'signature' hash of image values
%
% This routine only handles specifically known properties. It does not
% handle special prefixed properties, profiles, or expressions. Nor does
% it return any free-form property strings.
%
% The returned string is stored in a structure somewhere, and should not be
% directly freed. If the string was generated (common) the string will be
% stored as as either as artifact or option 'get-property'. These may be
% deleted (cleaned up) when no longer required, but neither artifact or
% option is guranteed to exist.
%
% The format of the GetMagickProperty method is:
%
% const char *GetMagickProperty(ImageInfo *image_info,Image *image,
% const char *property,ExceptionInfo *exception)
%
% A description of each parameter follows:
%
% o image_info: the image info (optional)
%
% o image: the image (optional)
%
% o key: the key.
%
% o exception: return any errors or warnings in this structure.
%
*/
static const char *GetMagickPropertyLetter(ImageInfo *image_info,
Image *image,const char letter,ExceptionInfo *exception)
{
#define WarnNoImageReturn(format,arg) \
if (image == (Image *) NULL ) { \
(void) ThrowMagickException(exception,GetMagickModule(),OptionWarning, \
"NoImageForProperty",format,arg); \
return((const char *) NULL); \
}
#define WarnNoImageInfoReturn(format,arg) \
if (image_info == (ImageInfo *) NULL ) { \
(void) ThrowMagickException(exception,GetMagickModule(),OptionWarning, \
"NoImageInfoForProperty",format,arg); \
return((const char *) NULL); \
}
char
value[MagickPathExtent]; /* formatted string to store as an artifact */
const char
*string; /* return a string already stored somewher */
if ((image != (Image *) NULL) && (image->debug != MagickFalse))
(void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
else
if ((image_info != (ImageInfo *) NULL) &&
(image_info->debug != MagickFalse))
(void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s","no-images");
*value='\0'; /* formatted string */
string=(char *) NULL; /* constant string reference */
/*
Get properities that are directly defined by images.
*/
switch (letter)
{
case 'b': /* image size read in - in bytes */
{
WarnNoImageReturn("\"%%%c\"",letter);
(void) FormatMagickSize(image->extent,MagickFalse,"B",MagickPathExtent,
value);
if (image->extent == 0)
(void) FormatMagickSize(GetBlobSize(image),MagickFalse,"B",
MagickPathExtent,value);
break;
}
case 'c': /* image comment property - empty string by default */
{
WarnNoImageReturn("\"%%%c\"",letter);
string=GetImageProperty(image,"comment",exception);
if ( string == (const char *) NULL )
string="";
break;
}
case 'd': /* Directory component of filename */
{
WarnNoImageReturn("\"%%%c\"",letter);
GetPathComponent(image->magick_filename,HeadPath,value);
if (*value == '\0')
string="";
break;
}
case 'e': /* Filename extension (suffix) of image file */
{
WarnNoImageReturn("\"%%%c\"",letter);
GetPathComponent(image->magick_filename,ExtensionPath,value);
if (*value == '\0')
string="";
break;
}
case 'f': /* Filename without directory component */
{
WarnNoImageReturn("\"%%%c\"",letter);
GetPathComponent(image->magick_filename,TailPath,value);
if (*value == '\0')
string="";
break;
}
case 'g': /* Image geometry, canvas and offset %Wx%H+%X+%Y */
{
WarnNoImageReturn("\"%%%c\"",letter);
(void) FormatLocaleString(value,MagickPathExtent,
"%.20gx%.20g%+.20g%+.20g",(double) image->page.width,(double)
image->page.height,(double) image->page.x,(double) image->page.y);
break;
}
case 'h': /* Image height (current) */
{
WarnNoImageReturn("\"%%%c\"",letter);
(void) FormatLocaleString(value,MagickPathExtent,"%.20g",(double)
(image->rows != 0 ? image->rows : image->magick_rows));
break;
}
case 'i': /* Filename last used for an image (read or write) */
{
WarnNoImageReturn("\"%%%c\"",letter);
string=image->filename;
break;
}
case 'k': /* Number of unique colors */
{
/*
FUTURE: ensure this does not generate the formatted comment!
*/
WarnNoImageReturn("\"%%%c\"",letter);
(void) FormatLocaleString(value,MagickPathExtent,"%.20g",(double)
GetNumberColors(image,(FILE *) NULL,exception));
break;
}
case 'l': /* Image label property - empty string by default */
{
WarnNoImageReturn("\"%%%c\"",letter);
string=GetImageProperty(image,"label",exception);
if (string == (const char *) NULL)
string="";
break;
}
case 'm': /* Image format (file magick) */
{
WarnNoImageReturn("\"%%%c\"",letter);
string=image->magick;
break;
}
case 'n': /* Number of images in the list. */
{
if ( image != (Image *) NULL )
(void) FormatLocaleString(value,MagickPathExtent,"%.20g",(double)
GetImageListLength(image));
else
string="0"; /* no images or scenes */
break;
}
case 'o': /* Output Filename - for delegate use only */
WarnNoImageInfoReturn("\"%%%c\"",letter);
string=image_info->filename;
break;
case 'p': /* Image index in current image list */
{
WarnNoImageReturn("\"%%%c\"",letter);
(void) FormatLocaleString(value,MagickPathExtent,"%.20g",(double)
GetImageIndexInList(image));
break;
}
case 'q': /* Quantum depth of image in memory */
{
WarnNoImageReturn("\"%%%c\"",letter);
(void) FormatLocaleString(value,MagickPathExtent,"%.20g",(double)
MAGICKCORE_QUANTUM_DEPTH);
break;
}
case 'r': /* Image storage class, colorspace, and alpha enabled. */
{
ColorspaceType
colorspace;
WarnNoImageReturn("\"%%%c\"",letter);
colorspace=image->colorspace;
if ((image->columns != 0) && (image->rows != 0) &&
(SetImageGray(image,exception) != MagickFalse))
colorspace=GRAYColorspace; /* FUTURE: this is IMv6 not IMv7 */
(void) FormatLocaleString(value,MagickPathExtent,"%s %s %s",
CommandOptionToMnemonic(MagickClassOptions,(ssize_t)
image->storage_class),CommandOptionToMnemonic(MagickColorspaceOptions,
(ssize_t) color