|
|
/*
|
|
|
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
|
|
% %
|
|
|
% %
|
|
|
% %
|
|
|
% SSSSS CCCC RRRR %
|
|
|
% SS C R R %
|
|
|
% SSS C RRRR %
|
|
|
% SS C R R %
|
|
|
% SSSSS CCCC R R %
|
|
|
% %
|
|
|
% %
|
|
|
% Read ZX-Spectrum SCREEN$ Format %
|
|
|
% %
|
|
|
% Software Design %
|
|
|
% Catalin Mihaila %
|
|
|
% October 2003 %
|
|
|
% %
|
|
|
% %
|
|
|
% Copyright 1999-2021 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/blob.h"
|
|
|
#include "MagickCore/blob-private.h"
|
|
|
#include "MagickCore/cache.h"
|
|
|
#include "MagickCore/exception.h"
|
|
|
#include "MagickCore/exception-private.h"
|
|
|
#include "MagickCore/image.h"
|
|
|
#include "MagickCore/image-private.h"
|
|
|
#include "MagickCore/list.h"
|
|
|
#include "MagickCore/magick.h"
|
|
|
#include "MagickCore/memory_.h"
|
|
|
#include "MagickCore/monitor.h"
|
|
|
#include "MagickCore/monitor-private.h"
|
|
|
#include "MagickCore/pixel-accessor.h"
|
|
|
#include "MagickCore/quantum-private.h"
|
|
|
#include "MagickCore/static.h"
|
|
|
#include "MagickCore/string_.h"
|
|
|
#include "MagickCore/module.h"
|
|
|
|
|
|
/*
|
|
|
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
|
|
% %
|
|
|
% %
|
|
|
% %
|
|
|
% R e a d S C R I m a g e %
|
|
|
% %
|
|
|
% %
|
|
|
% %
|
|
|
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
|
|
%
|
|
|
% ReadSCRImage() reads a Scitex 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 ReadSCRImage method is:
|
|
|
%
|
|
|
% Image *ReadSCRImage(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 *ReadSCRImage(const ImageInfo *image_info,ExceptionInfo *exception)
|
|
|
{
|
|
|
char zxscr[6144];
|
|
|
char zxattr[768];
|
|
|
int octetnr;
|
|
|
int octetline;
|
|
|
int zoneline;
|
|
|
int zonenr;
|
|
|
int octet_val;
|
|
|
int attr_nr;
|
|
|
int pix;
|
|
|
int piy;
|
|
|
int binar[8];
|
|
|
int attrbin[8];
|
|
|
int *pbin;
|
|
|
int *abin;
|
|
|
int z;
|
|
|
int one_nr;
|
|
|
int ink;
|
|
|
int paper;
|
|
|
int bright;
|
|
|
|
|
|
unsigned char color_palette[] = {
|
|
|
0, 0, 0,
|
|
|
0, 0,192,
|
|
|
192, 0, 0,
|
|
|
192, 0,192,
|
|
|
0,192, 0,
|
|
|
0,192,192,
|
|
|
192,192, 0,
|
|
|
192,192,192,
|
|
|
0, 0, 0,
|
|
|
0, 0,255,
|
|
|
255, 0, 0,
|
|
|
255, 0,255,
|
|
|
0,255, 0,
|
|
|
0,255,255,
|
|
|
255,255, 0,
|
|
|
255,255,255
|
|
|
};
|
|
|
|
|
|
Image
|
|
|
*image;
|
|
|
|
|
|
MagickBooleanType
|
|
|
status;
|
|
|
|
|
|
Quantum
|
|
|
*q;
|
|
|
|
|
|
ssize_t
|
|
|
count;
|
|
|
|
|
|
/*
|
|
|
Open image file.
|
|
|
*/
|
|
|
assert(image_info != (const ImageInfo *) NULL);
|
|
|
assert(image_info->signature == MagickCoreSignature);
|
|
|
if (image_info->debug != MagickFalse)
|
|
|
(void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
|
|
|
image_info->filename);
|
|
|
assert(exception != (ExceptionInfo *) NULL);
|
|
|
assert(exception->signature == MagickCoreSignature);
|
|
|
image=AcquireImage(image_info,exception);
|
|
|
status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception);
|
|
|
if (status == MagickFalse)
|
|
|
{
|
|
|
image=DestroyImageList(image);
|
|
|
return((Image *) NULL);
|
|
|
}
|
|
|
image->columns = 256;
|
|
|
image->rows = 192;
|
|
|
status=SetImageExtent(image,image->columns,image->rows,exception);
|
|
|
if (status == MagickFalse)
|
|
|
return(DestroyImageList(image));
|
|
|
count=ReadBlob(image,6144,(unsigned char *) zxscr);
|
|
|
if (count != 6144)
|
|
|
ThrowReaderException(CorruptImageError,"ImproperImageHeader");
|
|
|
count=ReadBlob(image,768,(unsigned char *) zxattr);
|
|
|
if (count != 768)
|
|
|
ThrowReaderException(CorruptImageError,"ImproperImageHeader");
|
|
|
for(zonenr=0;zonenr<3;zonenr++)
|
|
|
{
|
|
|
for(zoneline=0;zoneline<8;zoneline++)
|
|
|
{
|
|
|
for(octetline=0;octetline<8;octetline++)
|
|
|
{
|
|
|
for(octetnr=(zoneline*32);octetnr<((zoneline*32)+32);octetnr++)
|
|
|
{
|
|
|
octet_val = zxscr[octetnr+(256*octetline)+(zonenr*2048)];
|
|
|
attr_nr = zxattr[octetnr+(256*zonenr)];
|
|
|
|
|
|
pix = (((8*octetnr)-(256*zoneline)));
|
|
|
piy = ((octetline+(8*zoneline)+(zonenr*64)));
|
|
|
|
|
|
pbin = binar;
|
|
|
abin = attrbin;
|
|
|
|
|
|
one_nr=1;
|
|
|
|
|
|
for(z=0;z<8;z++)
|
|
|
{
|
|
|
if(octet_val&one_nr)
|
|
|
{
|
|
|
*pbin = 1;
|
|
|
} else {
|
|
|
*pbin = 0;
|
|
|
}
|
|
|
one_nr=one_nr*2;
|
|
|
pbin++;
|
|
|
}
|
|
|
|
|
|
one_nr = 1;
|
|
|
|
|
|
for(z=0;z<8;z++)
|
|
|
{
|
|
|
if(attr_nr&one_nr)
|
|
|
{
|
|
|
*abin = 1;
|
|
|
} else {
|
|
|
*abin = 0;
|
|
|
}
|
|
|
one_nr=one_nr*2;
|
|
|
abin++;
|
|
|
}
|
|
|
|
|
|
ink = (attrbin[0]+(2*attrbin[1])+(4*attrbin[2]));
|
|
|
paper = (attrbin[3]+(2*attrbin[4])+(4*attrbin[5]));
|
|
|
bright = attrbin[6];
|
|
|
|
|
|
if(bright) { ink=ink+8; paper=paper+8; }
|
|
|
|
|
|
for(z=7;z>-1;z--)
|
|
|
{
|
|
|
q=QueueAuthenticPixels(image,pix,piy,1,1,exception);
|
|
|
if (q == (Quantum *) NULL)
|
|
|
break;
|
|
|
|
|
|
if(binar[z])
|
|
|
{
|
|
|
SetPixelRed(image,ScaleCharToQuantum(
|
|
|
color_palette[3*ink]),q);
|
|
|
SetPixelGreen(image,ScaleCharToQuantum(
|
|
|
color_palette[1+(3*ink)]),q);
|
|
|
SetPixelBlue(image,ScaleCharToQuantum(
|
|
|
color_palette[2+(3*ink)]),q);
|
|
|
} else {
|
|
|
SetPixelRed(image,ScaleCharToQuantum(
|
|
|
color_palette[3*paper]),q);
|
|
|
SetPixelGreen(image,ScaleCharToQuantum(
|
|
|
color_palette[1+(3*paper)]),q);
|
|
|
SetPixelBlue(image,ScaleCharToQuantum(
|
|
|
color_palette[2+(3*paper)]),q);
|
|
|
}
|
|
|
|
|
|
pix++;
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
(void) CloseBlob(image);
|
|
|
return(GetFirstImageInList(image));
|
|
|
}
|
|
|
|
|
|
/*
|
|
|
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
|
|
% %
|
|
|
% %
|
|
|
% %
|
|
|
% R e g i s t e r S C R I m a g e %
|
|
|
% %
|
|
|
% %
|
|
|
% %
|
|
|
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
|
|
%
|
|
|
% RegisterSCRImage() adds attributes for the SCR 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 RegisterSCRImage method is:
|
|
|
%
|
|
|
% size_t RegisterSCRImage(void)
|
|
|
%
|
|
|
*/
|
|
|
ModuleExport size_t RegisterSCRImage(void)
|
|
|
{
|
|
|
MagickInfo
|
|
|
*entry;
|
|
|
|
|
|
entry=AcquireMagickInfo("SCR","SCR","ZX-Spectrum SCREEN$");
|
|
|
entry->decoder=(DecodeImageHandler *) ReadSCRImage;
|
|
|
entry->flags^=CoderAdjoinFlag;
|
|
|
(void) RegisterMagickInfo(entry);
|
|
|
return(MagickImageCoderSignature);
|
|
|
}
|
|
|
|
|
|
/*
|
|
|
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
|
|
% %
|
|
|
% %
|
|
|
% %
|
|
|
% U n r e g i s t e r S C R I m a g e %
|
|
|
% %
|
|
|
% %
|
|
|
% %
|
|
|
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
|
|
%
|
|
|
% UnregisterSCRImage() removes format registrations made by the
|
|
|
% SCR module from the list of supported formats.
|
|
|
%
|
|
|
% The format of the UnregisterSCRImage method is:
|
|
|
%
|
|
|
% UnregisterSCRImage(void)
|
|
|
%
|
|
|
*/
|
|
|
ModuleExport void UnregisterSCRImage(void)
|
|
|
{
|
|
|
(void) UnregisterMagickInfo("SCR");
|
|
|
}
|