/*
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% %
% %
% %
% W r i t e M P R I m a g e %
% %
% %
% %
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%
% WriteMPRImage() writes an image into the Magick Persistent Registry
% image as a blob from memory. It allocates the memory necessary for the
% new Image structure and returns a pointer to the new image.
%
% The format of the WriteMPRImage method is:
%
% MagickBooleanType WriteMPRImage(const ImageInfo *image_info,Image *image)
%
% A description of each parameter follows.
%
% o image_info: the image info.
%
% o image: The image.
%
*/
static MagickBooleanType WriteMPRImage(const ImageInfo *image_info,Image *image)
{
MagickBooleanType
status;
assert(image_info != (const ImageInfo *) NULL);
assert(image_info->signature == MagickSignature);
assert(image != (Image *) NULL);
assert(image->signature == MagickSignature);
if (image->debug != MagickFalse)
(void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
status=SetImageRegistry(ImageRegistryType,image->filename,image,
&image->exception);
return(status);
}
/*
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% %
% %
% %
% D e f i n e I m a g e R e g i s t r y %
% %
% %
% %
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%
% DefineImageRegistry() associates a key/value pair with the image registry.
%
% The format of the DefineImageRegistry method is:
%
% MagickBooleanType DefineImageRegistry(const RegistryType type,
% const char *option,ExceptionInfo *exception)
%
% A description of each parameter follows:
%
% o type: the type.
%
% o option: the option.
%
% o exception: the exception.
%
*/
MagickExport MagickBooleanType DefineImageRegistry(const RegistryType type,
const char *option,ExceptionInfo *exception)
{
char
key[MaxTextExtent],
value[MaxTextExtent];
register char
*p;
assert(option != (const char *) NULL);
(void) CopyMagickString(key,option,MaxTextExtent);
for (p=key; *p != '\0'; p++)
if (*p == '=')
break;
*value='\0';
if (*p == '=')
(void) CopyMagickString(value,p+1,MaxTextExtent);
*p='\0';
return(SetImageRegistry(type,key,value,exception));
}
/*
External: write_temp_image
Purpose: Write a temporary copy of the image to the IM registry
Returns: the "filename" of the registered image
Notes: The `temp_name' argument must point to an char array
of size MaxTextExtent.
*/
void
rm_write_temp_image(Image *image, char *temp_name)
{
#define TMPNAM_CLASS_VAR "@@_tmpnam_"
MagickBooleanType okay;
ExceptionInfo exception;
volatile VALUE id_value;
int id;
GetExceptionInfo(&exception);
// 'id' is always the value of its previous use
if (rb_cvar_defined(Module_Magick, rb_intern(TMPNAM_CLASS_VAR)) == Qtrue)
{
id_value = rb_cv_get(Module_Magick, TMPNAM_CLASS_VAR);
id = FIX2INT(id_value);
}
else
{
id = 0;
rb_cv_set(Module_Magick, TMPNAM_CLASS_VAR, INT2FIX(id));
}
id += 1;
rb_cv_set(Module_Magick, TMPNAM_CLASS_VAR, INT2FIX(id));
sprintf(temp_name, "mpri:%d", id);
// Omit "mpri:" from filename to form the key
okay = SetImageRegistry(ImageRegistryType, temp_name+5, image, &exception);
CHECK_EXCEPTION()
DestroyExceptionInfo(&exception);
if (!okay)
{
rb_raise(rb_eRuntimeError, "SetImageRegistry failed.");
}
}
