/*
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% %
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% %
+ R e a d I n l i n e I m a g e %
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%
% ReadInlineImage() reads a Base64-encoded inline image or image sequence.
% The method returns a NULL if there is a memory shortage or if the image
% cannot be read. On failure, a NULL image is returned and exception
% describes the reason for the failure.
%
% The format of the ReadInlineImage method is:
%
% Image *ReadInlineImage(const ImageInfo *image_info,const char *content,
% ExceptionInfo *exception)
%
% A description of each parameter follows:
%
% o image_info: the image info.
%
% o content: the image encoded in Base64.
%
% o exception: return any errors or warnings in this structure.
%
*/
MagickExport Image *ReadInlineImage(const ImageInfo *image_info,
const char *content,ExceptionInfo *exception)
{
Image
*image;
ImageInfo
*read_info;
unsigned char
*blob;
size_t
length;
register const char
*p;
image=NewImageList();
for (p=content; (*p != ',') && (*p != '\0'); p++) ;
if (*p == '\0')
ThrowReaderException(CorruptImageError,"CorruptImage");
p++;
length=0;
blob=Base64Decode(p,&length);
if (length == 0)
ThrowReaderException(CorruptImageError,"CorruptImage");
read_info=CloneImageInfo(image_info);
(void) SetImageInfoProgressMonitor(read_info,(MagickProgressMonitor) NULL,
(void *) NULL);
image=BlobToImage(read_info,blob,length,exception);
blob=(unsigned char *) RelinquishMagickMemory(blob);
read_info=DestroyImageInfo(read_info);
return(image);
}
/*
Method: Info#monitor=
Purpose: Establish a progress monitor
Notes: See Image_monitor_eq
*/
VALUE
Info_monitor_eq(VALUE self, VALUE monitor)
{
Info *info;
Data_Get_Struct(self, Info, info);
if (NIL_P(monitor))
{
info->progress_monitor = NULL;
}
else
{
(void) SetImageInfoProgressMonitor(info, rm_progress_monitor, (void *)monitor);
}
return self;
}
/*
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% R e a d V I D I m a g e %
% %
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%
% ReadVIDImage reads one of more images and creates a Visual Image
% Directory file. It allocates the memory necessary for the new Image
% structure and returns a pointer to the new image.
%
% The format of the ReadVIDImage method is:
%
% Image *ReadVIDImage(const ImageInfo *image_info,ExceptionInfo *exception)
%
% A description of each parameter follows:
%
% o image_info: the image info.
%
% o exception: return any errors or warnings in this structure.
%
*/
static Image *ReadVIDImage(const ImageInfo *image_info,ExceptionInfo *exception)
{
#define ClientName "montage"
char
**filelist,
*label;
Image
*image,
*images,
*montage_image,
*next_image,
*thumbnail_image;
ImageInfo
*read_info;
int
number_files;
MagickBooleanType
status;
MontageInfo
*montage_info;
RectangleInfo
geometry;
register ssize_t
i;
/*
Expand the filename.
*/
assert(image_info != (const ImageInfo *) NULL);
assert(image_info->signature == MagickSignature);
if (image_info->debug != MagickFalse)
(void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
image_info->filename);
assert(exception != (ExceptionInfo *) NULL);
assert(exception->signature == MagickSignature);
image=AcquireImage(image_info);
filelist=(char **) AcquireAlignedMemory(1,sizeof(*filelist));
if (filelist == (char **) NULL)
ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
filelist[0]=ConstantString(image_info->filename);
number_files=1;
status=ExpandFilenames(&number_files,&filelist);
if ((status == MagickFalse) || (number_files == 0))
ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
image=DestroyImage(image);
/*
Read each image and convert them to a tile.
*/
images=NewImageList();
read_info=CloneImageInfo(image_info);
SetImageInfoBlob(read_info,(void *) NULL,0);
(void) SetImageInfoProgressMonitor(read_info,(MagickProgressMonitor) NULL,
(void *) NULL);
if (read_info->size == (char *) NULL)
(void) CloneString(&read_info->size,DefaultTileGeometry);
for (i=0; i < (ssize_t) number_files; i++)
{
if (image_info->debug != MagickFalse)
(void) LogMagickEvent(CoderEvent,GetMagickModule(),"name: %s",
filelist[i]);
(void) CopyMagickString(read_info->filename,filelist[i],MaxTextExtent);
filelist[i]=DestroyString(filelist[i]);
*read_info->magick='\0';
next_image=ReadImage(read_info,exception);
CatchException(exception);
if (next_image == (Image *) NULL)
break;
label=InterpretImageProperties(image_info,next_image,DefaultTileLabel);
(void) SetImageProperty(next_image,"label",label);
label=DestroyString(label);
if (image_info->debug != MagickFalse)
(void) LogMagickEvent(CoderEvent,GetMagickModule(),
"geometry: %.20gx%.20g",(double) next_image->columns,(double)
next_image->rows);
SetGeometry(next_image,&geometry);
(void) ParseMetaGeometry(read_info->size,&geometry.x,&geometry.y,
&geometry.width,&geometry.height);
thumbnail_image=ThumbnailImage(next_image,geometry.width,geometry.height,
exception);
if (thumbnail_image != (Image *) NULL)
{
next_image=DestroyImage(next_image);
next_image=thumbnail_image;
}
if (image_info->debug != MagickFalse)
(void) LogMagickEvent(CoderEvent,GetMagickModule(),
"thumbnail geometry: %.20gx%.20g",(double) next_image->columns,(double)
next_image->rows);
AppendImageToList(&images,next_image);
status=SetImageProgress(images,LoadImagesTag,i,number_files);
if (status == MagickFalse)
break;
}
read_info=DestroyImageInfo(read_info);
filelist=(char **) RelinquishMagickMemory(filelist);
if (images == (Image *) NULL)
ThrowReaderException(CorruptImageError,
"ImageFileDoesNotContainAnyImageData");
/*
Create the visual image directory.
*/
montage_info=CloneMontageInfo(image_info,(MontageInfo *) NULL);
if (image_info->debug != MagickFalse)
(void) LogMagickEvent(CoderEvent,GetMagickModule(),"creating montage");
montage_image=MontageImageList(image_info,montage_info,
GetFirstImageInList(images),exception);
montage_info=DestroyMontageInfo(montage_info);
images=DestroyImageList(images);
return(montage_image);
}
/*
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% R e a d P W P I m a g e %
% %
% %
% %
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%
% ReadPWPImage() reads a Seattle Film Works multi-image file and returns
% it. It allocates the memory necessary for the new Image structure and
% returns a pointer to the new image.
%
% The format of the ReadPWPImage method is:
%
% Image *ReadPWPImage(const ImageInfo *image_info,ExceptionInfo *exception)
%
% A description of each parameter follows:
%
% o image_info: the image info.
%
% o exception: return any errors or warnings in this structure.
%
*/
static Image *ReadPWPImage(const ImageInfo *image_info,ExceptionInfo *exception)
{
FILE
*file;
Image
*image,
*next_image,
*pwp_image;
ImageInfo
*read_info;
int
c,
unique_file;
MagickBooleanType
status;
register Image
*p;
register ssize_t
i;
size_t
filesize,
length;
ssize_t
count;
unsigned char
magick[MaxTextExtent];
/*
Open image file.
*/
assert(image_info != (const ImageInfo *) NULL);
assert(image_info->signature == MagickSignature);
if (image_info->debug != MagickFalse)
(void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
image_info->filename);
assert(exception != (ExceptionInfo *) NULL);
assert(exception->signature == MagickSignature);
pwp_image=AcquireImage(image_info);
image=pwp_image;
status=OpenBlob(image_info,pwp_image,ReadBinaryBlobMode,exception);
if (status == MagickFalse)
return((Image *) NULL);
count=ReadBlob(pwp_image,5,magick);
if ((count == 0) || (LocaleNCompare((char *) magick,"SFW95",5) != 0))
ThrowReaderException(CorruptImageError,"ImproperImageHeader");
read_info=CloneImageInfo(image_info);
(void) SetImageInfoProgressMonitor(read_info,(MagickProgressMonitor) NULL,
(void *) NULL);
SetImageInfoBlob(read_info,(void *) NULL,0);
unique_file=AcquireUniqueFileResource(read_info->filename);
for ( ; ; )
{
for (c=ReadBlobByte(pwp_image); c != EOF; c=ReadBlobByte(pwp_image))
{
for (i=0; i < 17; i++)
magick[i]=magick[i+1];
magick[17]=(unsigned char) c;
if (LocaleNCompare((char *) (magick+12),"SFW94A",6) == 0)
break;
}
if (c == EOF)
break;
if (LocaleNCompare((char *) (magick+12),"SFW94A",6) != 0)
ThrowReaderException(CorruptImageError,"ImproperImageHeader");
/*
Dump SFW image to a temporary file.
*/
file=(FILE *) NULL;
if (unique_file != -1)
file=fdopen(unique_file,"wb");
if ((unique_file == -1) || (file == (FILE *) NULL))
{
ThrowFileException(exception,FileOpenError,"UnableToWriteFile",
image->filename);
image=DestroyImageList(image);
return((Image *) NULL);
}
length=fwrite("SFW94A",1,6,file);
(void) length;
filesize=65535UL*magick[2]+256L*magick[1]+magick[0];
for (i=0; i < (ssize_t) filesize; i++)
{
c=ReadBlobByte(pwp_image);
(void) fputc(c,file);
}
(void) fclose(file);
next_image=ReadImage(read_info,exception);
if (next_image == (Image *) NULL)
break;
(void) FormatLocaleString(next_image->filename,MaxTextExtent,
"slide_%02ld.sfw",(long) next_image->scene);
if (image == (Image *) NULL)
image=next_image;
else
{
/*
Link image into image list.
*/
for (p=image; p->next != (Image *) NULL; p=GetNextImageInList(p)) ;
next_image->previous=p;
next_image->scene=p->scene+1;
p->next=next_image;
}
if (image_info->number_scenes != 0)
if (next_image->scene >= (image_info->scene+image_info->number_scenes-1))
break;
status=SetImageProgress(image,LoadImagesTag,TellBlob(pwp_image),
GetBlobSize(pwp_image));
if (status == MagickFalse)
break;
}
(void) RelinquishUniqueFileResource(read_info->filename);
read_info=DestroyImageInfo(read_info);
(void) CloseBlob(pwp_image);
pwp_image=DestroyImage(pwp_image);
if (EOFBlob(image) != MagickFalse)
{
char
*message;
message=GetExceptionMessage(errno);
(void) ThrowMagickException(exception,GetMagickModule(),CorruptImageError,
"UnexpectedEndOfFile","`%s': %s",image->filename,message);
message=DestroyString(message);
}
(void) CloseBlob(image);
return(GetFirstImageInList(image));
}
