/*
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% %
% %
% AAA RRRR TTTTT %
% A A R R T %
% AAAAA RRRR T %
% A A R R T %
% A A R R T %
% %
% %
% Read/Write ImageMagick Image Format. %
% %
% %
% Software Design %
% Jaroslav Fojtik %
% January 2001 %
% %
% %
% Permission is hereby granted, free of charge, to any person obtaining a %
% copy of this software and associated documentation files ("ImageMagick"), %
% to deal in ImageMagick without restriction, including without limitation %
% the rights to use, copy, modify, merge, publish, distribute, sublicense, %
% and/or sell copies of ImageMagick, and to permit persons to whom the %
% ImageMagick is furnished to do so, subject to the following conditions: %
% %
% The above copyright notice and this permission notice shall be included in %
% all copies or substantial portions of ImageMagick. %
% %
% The software is provided "as is", without warranty of any kind, express or %
% implied, including but not limited to the warranties of merchantability, %
% fitness for a particular purpose and noninfringement. In no event shall %
% ImageMagick Studio be liable for any claim, damages or other liability, %
% whether in an action of contract, tort or otherwise, arising from, out of %
% or in connection with ImageMagick or the use or other dealings in %
% ImageMagick. %
% %
% Except as contained in this notice, the name of the ImageMagick Studio %
% shall not be used in advertising or otherwise to promote the sale, use or %
% other dealings in ImageMagick without prior written authorization from the %
% ImageMagick Studio. %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%
*/
/*
Include declarations.
*/
#include "magick.h"
#include "defines.h"
static void InsertRow(unsigned char *p,int y,Image *image)
{
int bit,x;
register PixelPacket *q;
IndexPacket index;
register IndexPacket *indexes;
switch (image->depth)
{
case 1: /* Convert bitmap scanline. */
{
q=SetImagePixels(image,0,y,image->columns,1);
if (q == (PixelPacket *) NULL)
break;
indexes=GetIndexes(image);
for (x=0; x < ((int) image->columns-7); x+=8)
{
for (bit=0; bit < 8; bit++)
{
index=((*p) & (0x80 >> bit) ? 0x01 : 0x00);
indexes[x+bit]=index;
*q++=image->colormap[index];
}
p++;
}
if ((image->columns % 8) != 0)
{
for (bit=0; bit < (int) (image->columns % 8); bit++)
{
index=((*p) & (0x80 >> bit) ? 0x01 : 0x00);
indexes[x+bit]=index;
*q++=image->colormap[index];
}
p++;
}
if (!SyncImagePixels(image))
break;
/* if (image->previous == (Image *) NULL)
if (QuantumTick(y,image->rows))
ProgressMonitor(LoadImageText,image->rows-y-1,image->rows);*/
break;
}
}
}
/*
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% %
% %
% %
% R e a d A R T I m a g e %
% %
% %
% %
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%
% Method ReadARTImage reads an ART X 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 ReadARTImage method is:
%
% Image *ReadARTImage(const ImageInfo *image_info,ExceptionInfo *exception)
%
% A description of each parameter follows:
%
% o image: Method ReadARTImage returns a pointer to the image after
% reading. A null image is returned if there is a memory shortage or if
% the image cannot be read.
%
% o image_info: Specifies a pointer to an ImageInfo structure.
%
% o exception: return any errors or warnings in this structure.
%
%
*/
static Image *ReadARTImage(const ImageInfo *image_info,ExceptionInfo *exception)
{
Image *image;
int i;
unsigned width,height,dummy;
long ldblk;
unsigned char *BImgBuff=NULL;
unsigned char k;
unsigned int status;
/* Open image file. */
image=AllocateImage(image_info);
status=OpenBlob(image_info,image,ReadBinaryType);
if (status == False)
ThrowReaderException(FileOpenWarning,"Unable to open file",image);
/*
Read ART image.
*/
dummy=ReadBlobLSBShort(image);
width=ReadBlobLSBShort(image);
dummy=ReadBlobLSBShort(image);
height=ReadBlobLSBShort(image);
ldblk=(width+7) / 8;
k=(-ldblk) & 1;
if(image->filesize!=(8+((long)ldblk+k)*height))
ThrowReaderException(CorruptImageWarning,"Not a ART image file",image);
image->columns=width;
image->rows=height;
image->depth=1;
image->colors=1l << image->depth;
/* printf("ART header checked OK %d,%d\n",image->colors,image->depth); */
if (!AllocateImageColormap(image,image->colors)) goto NoMemory;
/* ----- Load RLE compressed raster ----- */
BImgBuff=(unsigned char *) malloc(ldblk); /*Ldblk was set in the check phase*/
if(BImgBuff==NULL)
NoMemory: ThrowReaderException(CorruptImageWarning,"Memory exhausted",image);
for(i=0;i<height;i++)
{
ReadBlob(image,ldblk,(char *)BImgBuff);
ReadBlob(image,k,(char *)&dummy);
InsertRow(BImgBuff,i,image);
}
CloseBlob(image);
if(BImgBuff!=NULL) free(BImgBuff);
return(image);
}
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% R e g i s t e r A R T I m a g e %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% Method RegisterARTImage adds attributes for the ART image format to
% the list of supported formats. The attributes include the image format
% tag, 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 RegisterARTImage method is:
%
% RegisterARTImage(void)
%
*/
ModuleExport void RegisterARTImage(void)
{
MagickInfo
*entry;
entry=SetMagickInfo("ART");
entry->decoder=ReadARTImage;
entry->description=AllocateString("PF1: 1st Publisher");
entry->module=AllocateString("ART");
RegisterMagickInfo(entry);
}
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% U n r e g i s t e r A R T I m a g e %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% Method UnregisterARTImage removes format registrations made by the
% ART module from the list of supported formats.
%
% The format of the UnregisterARTImage method is:
%
% UnregisterARTImage(void)
%
*/
ModuleExport void UnregisterARTImage(void)
{
UnregisterMagickInfo("ART");
}
