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|
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% CCC U U TTTTT %
% C U U T %
% C U U T %
% C U U T %
% CCC UUU T %
% %
% %
% Read DR Halo Image Format. %
% %
% Software Design %
% Jaroslav Fojtik %
% June 2000 %
% %
% %
% 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/studio.h"
#include "magick/blob.h"
#include "magick/blob-private.h"
#include "magick/color.h"
#include "magick/color-private.h"
#include "magick/exception.h"
#include "magick/exception-private.h"
#include "magick/image.h"
#include "magick/image-private.h"
#include "magick/list.h"
#include "magick/magick.h"
#include "magick/memory_.h"
#include "magick/static.h"
#include "magick/string_.h"
typedef struct
{
unsigned Width;
unsigned Height;
unsigned Reserved;
} CUTHeader;
typedef struct
{
char FileId[2];
unsigned Version;
unsigned Size;
char FileType;
char SubType;
unsigned BoardID;
unsigned GraphicsMode;
unsigned MaxIndex;
unsigned MaxRed;
unsigned MaxGreen;
unsigned MaxBlue;
char PaletteId[20];
} CUTPalHeader;
static void InsertRow(long depth,unsigned char *p,long y,Image *image)
{
unsigned long bit; long x;
register PixelPacket *q;
IndexPacket index;
register IndexPacket *indexes;
index=0;
switch (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 < ((long) image->columns-7); x+=8)
{
for (bit=0; bit < 8; bit++)
{
index=(IndexPacket) ((((*p) & (0x80 >> bit)) != 0) ? 0x01 : 0x00);
indexes[x+bit]=index;
*q++=image->colormap[index];
}
p++;
}
if ((image->columns % 8) != 0)
{
for (bit=0; bit < (image->columns % 8); bit++)
{
index=(IndexPacket) ((((*p) & (0x80 >> bit)) != 0) ? 0x01 : 0x00);
indexes[x+bit]=index;
*q++=image->colormap[index];
}
p++;
}
if (SyncImagePixels(image) == MagickFalse)
break;
/* if (image->previous == (Image *) NULL)
if (QuantumTick(y,image->rows) != MagickFalse)
ProgressMonitor(LoadImageText,image->rows-y-1,image->rows);*/
break;
}
case 2: /* Convert PseudoColor scanline. */
{
q=SetImagePixels(image,0,y,image->columns,1);
if (q == (PixelPacket *) NULL)
break;
indexes=GetIndexes(image);
for (x=0; x < ((long) image->columns-1); x+=2)
{
index=ConstrainColormapIndex(image,(*p >> 6) & 0x3);
indexes[x]=index;
*q++=image->colormap[index];
index=ConstrainColormapIndex(image,(*p >> 4) & 0x3);
indexes[x]=index;
*q++=image->colormap[index];
index=ConstrainColormapIndex(image,(*p >> 2) & 0x3);
indexes[x]=index;
*q++=image->colormap[index];
index=ConstrainColormapIndex(image,(*p) & 0x3);
indexes[x+1]=index;
*q++=image->colormap[index];
p++;
}
if ((image->columns % 4) != 0)
{
index=ConstrainColormapIndex(image,(*p >> 6) & 0x3);
indexes[x]=index;
*q++=image->colormap[index];
if ((image->columns % 4) >= 1)
{
index=ConstrainColormapIndex(image,(*p >> 4) & 0x3);
indexes[x]=index;
*q++=image->colormap[index];
if ((image->columns % 4) >= 2)
{
index=ConstrainColormapIndex(image,(*p >> 2) & 0x3);
indexes[x]=index;
*q++=image->colormap[index];
}
}
p++;
}
if (SyncImagePixels(image) == MagickFalse)
break;
/* if (image->previous == (Image *) NULL)
if (QuantumTick(y,image->rows) != MagickFalse)
ProgressMonitor(LoadImageText,image->rows-y-1,image->rows);*/
break;
}
case 4: /* Convert PseudoColor scanline. */
{
q=SetImagePixels(image,0,y,image->columns,1);
if (q == (PixelPacket *) NULL)
break;
indexes=GetIndexes(image);
for (x=0; x < ((long) image->columns-1); x+=2)
{
index=ConstrainColormapIndex(image,(*p >> 4) & 0xf);
indexes[x]=index;
*q++=image->colormap[index];
index=ConstrainColormapIndex(image,(*p) & 0xf);
indexes[x+1]=index;
*q++=image->colormap[index];
p++;
}
if ((image->columns % 2) != 0)
{
index=ConstrainColormapIndex(image,(*p >> 4) & 0xf);
indexes[x]=index;
*q++=image->colormap[index];
p++;
}
if (SyncImagePixels(image) == MagickFalse)
break;
/* if (image->previous == (Image *) NULL)
if (QuantumTick(y,image->rows) != MagickFalse)
ProgressMonitor(LoadImageText,image->rows-y-1,image->rows);*/
break;
}
case 8: /* Convert PseudoColor scanline. */
{
q=SetImagePixels(image,0,y,image->columns,1);
if (q == (PixelPacket *) NULL) break;
indexes=GetIndexes(image);
for (x=0; x < (long) image->columns; x++)
{
index=ConstrainColormapIndex(image,*p);
indexes[x]=index;
*q++=image->colormap[index];
p++;
}
if (SyncImagePixels(image) == MagickFalse)
break;
/* if (image->previous == (Image *) NULL)
if (QuantumTick(y,image->rows) != MagickFalse)
ProgressMonitor(LoadImageText,image->rows-y-1,image->rows);*/
}
break;
}
}
/*
Compute the number of colors in Grayed R[i]=G[i]=B[i] image
*/
static int GetCutColors(Image *image)
{
long
x,
y;
PixelPacket
*q;
Quantum
intensity,
scale_intensity;
intensity=0;
scale_intensity=ScaleCharToQuantum(16);
for (y=0; y < (long) image->rows; y++)
{
q=GetImagePixels(image,0,y,image->columns,1);
for (x=(long) image->columns-1; x >= 0; x--)
{
if (intensity < q->red)
intensity=q->red;
if (intensity >= scale_intensity)
return(255);
q++;
}
}
if (intensity < ScaleCharToQuantum(2))
return(2);
if (intensity < ScaleCharToQuantum(16))
return(16);
return(intensity);
}
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% R e a d C U T I m a g e %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% ReadCUTImage() reads an CUT 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 ReadCUTImage method is:
%
% Image *ReadCUTImage(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 *ReadCUTImage(const ImageInfo *image_info,ExceptionInfo *exception)
{
Image *image,*palette;
ImageInfo *clone_info;
MagickBooleanType status;
unsigned long EncodedByte;
unsigned char RunCount,RunValue,RunCountMasked;
CUTHeader Header;
CUTPalHeader PalHeader;
long depth;
long i,j;
long ldblk;
unsigned char *BImgBuff=NULL,*ptrB;
PixelPacket *q;
ssize_t
count;
/*
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);
image=AllocateImage(image_info);
status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception);
if (status == MagickFalse)
{
image=DestroyImageList(image);
return((Image *) NULL);
}
/*
Read CUT image.
*/
palette=NULL;
clone_info=NULL;
Header.Width=ReadBlobLSBShort(image);
Header.Height=ReadBlobLSBShort(image);
Header.Reserved=ReadBlobLSBShort(image);
if (Header.Width==0 || Header.Height==0 || Header.Reserved!=0)
CUT_KO: ThrowReaderException(CorruptImageError,"ImproperImageHeader");
/*---This code checks first line of image---*/
EncodedByte=ReadBlobLSBShort(image);
RunCount=(unsigned char) ReadBlobByte(image);
RunCountMasked=RunCount & 0x7F;
ldblk=0;
while((int) RunCountMasked!=0) /*end of line?*/
{
i=1;
if((int) RunCount<0x80) i=(long) RunCountMasked;
(void) SeekBlob(image,TellBlob(image)+i,SEEK_SET);
if(EOFBlob(image) != MagickFalse) goto CUT_KO; /*wrong data*/
EncodedByte-=i+1;
ldblk+=(long) RunCountMasked;
RunCount=(unsigned char) ReadBlobByte(image);
if(EOFBlob(image) != MagickFalse) goto CUT_KO; /*wrong data: unexpected eof in line*/
RunCountMasked=RunCount & 0x7F;
}
if(EncodedByte!=1) goto CUT_KO; /*wrong data: size incorrect*/
i=0; /*guess a number of bit planes*/
if(ldblk==(int) Header.Width) i=8;
if(2*ldblk==(int) Header.Width) i=4;
if(8*ldblk==(int) Header.Width) i=1;
if(i==0) goto CUT_KO; /*wrong data: incorrect bit planes*/
depth=i;
image->columns=Header.Width;
image->rows=Header.Height;
image->depth=8;
image->colors=1UL << (unsigned long) i;
/* ----- Do something with palette ----- */
if ((clone_info=CloneImageInfo(image_info)) == NULL) goto NoPalette;
i=(long) strlen(clone_info->filename);
j=i;
while(--i>0)
{
if(clone_info->filename[i]=='.')
{
break;
}
if(clone_info->filename[i]=='/' || clone_info->filename[i]=='\\' ||
clone_info->filename[i]==':' )
{
i=j;
break;
}
}
(void) strcpy(clone_info->filename+i,".PAL");
if((clone_info->file=fopen(clone_info->filename,"rb"))==NULL)
{
(void) strcpy(clone_info->filename+i,".pal");
if((clone_info->file=fopen(clone_info->filename,"rb"))==NULL)
{
clone_info->filename[i]='\0';
if((clone_info->file=fopen(clone_info->filename,"rb"))==NULL)
{
clone_info=DestroyImageInfo(clone_info);
clone_info=NULL;
goto NoPalette;
}
}
}
if( (palette=AllocateImage(clone_info))==NULL ) goto NoPalette;
status=OpenBlob(clone_info,palette,ReadBinaryBlobMode,exception);
if (status == MagickFalse)
{
ErasePalette:
palette=DestroyImage(palette);
palette=NULL;
goto NoPalette;
}
if(palette!=NULL)
{
count=ReadBlob(palette,2,(unsigned char *) PalHeader.FileId);
if(strncmp(PalHeader.FileId,"AH",2) != 0) goto ErasePalette;
PalHeader.Version=ReadBlobLSBShort(palette);
PalHeader.Size=ReadBlobLSBShort(palette);
PalHeader.FileType=(char) ReadBlobByte(palette);
PalHeader.SubType=(char) ReadBlobByte(palette);
PalHeader.BoardID=ReadBlobLSBShort(palette);
PalHeader.GraphicsMode=ReadBlobLSBShort(palette);
PalHeader.MaxIndex=ReadBlobLSBShort(palette);
PalHeader.MaxRed=ReadBlobLSBShort(palette);
PalHeader.MaxGreen=ReadBlobLSBShort(palette);
PalHeader.MaxBlue=ReadBlobLSBShort(palette);
count=ReadBlob(palette,20,(unsigned char *) PalHeader.PaletteId);
if(PalHeader.MaxIndex<1) goto ErasePalette;
image->colors=PalHeader.MaxIndex+1;
if (AllocateImageColormap(image,image->colors) == MagickFalse) goto NoMemory;
if(PalHeader.MaxRed==0) PalHeader.MaxRed=QuantumRange; /*avoid division by 0*/
if(PalHeader.MaxGreen==0) PalHeader.MaxGreen=QuantumRange;
if(PalHeader.MaxBlue==0) PalHeader.MaxBlue=QuantumRange;
for(i=0;i<=(int) PalHeader.MaxIndex;i++)
{ /*this may be wrong- I don't know why is palette such strange*/
j=(long) TellBlob(palette);
if((j % 512)>512-6)
{
j=((j / 512)+1)*512;
(void) SeekBlob(palette,j,SEEK_SET);
}
image->colormap[i].red=ReadBlobLSBShort(palette);
if(QuantumRange!=(Quantum) PalHeader.MaxRed)
{
image->colormap[i].red=(Quantum)
(((double)image->colormap[i].red*QuantumRange+(PalHeader.MaxRed>>1))/PalHeader.MaxRed+0.5);
}
image->colormap[i].green=ReadBlobLSBShort(palette);
if(QuantumRange!=(Quantum) PalHeader.MaxGreen)
{
image->colormap[i].green=(Quantum)
(((double)image->colormap[i].green*QuantumRange+(PalHeader.MaxGreen>>1))/PalHeader.MaxGreen+0.5);
}
image->colormap[i].blue=ReadBlobLSBShort(palette);
if(QuantumRange!=(Quantum) PalHeader.MaxBlue)
{
image->colormap[i].blue=(Quantum)
(((double)image->colormap[i].blue*QuantumRange+(PalHeader.MaxBlue>>1))/PalHeader.MaxBlue+0.5);
}
}
}
NoPalette:
if(palette==NULL)
{
image->colors=256;
if (AllocateImageColormap(image,image->colors) == MagickFalse)
{
NoMemory:
ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
}
for (i=0; i < (long)image->colors; i++)
{
image->colormap[i].red=ScaleCharToQuantum(i);
image->colormap[i].green=ScaleCharToQuantum(i);
image->colormap[i].blue=ScaleCharToQuantum(i);
}
}
/* ----- Load RLE compressed raster ----- */
BImgBuff=(unsigned char *) AcquireMagickMemory((size_t) ldblk); /*Ldblk was set in the check phase*/
if(BImgBuff==NULL) goto NoMemory;
(void) SeekBlob(image,6 /*sizeof(Header)*/,SEEK_SET);
for(i=0;i<(int) Header.Height;i++)
{
EncodedByte=ReadBlobLSBShort(image);
ptrB=BImgBuff;
j=ldblk;
RunCount=(unsigned char) ReadBlobByte(image);
RunCountMasked=RunCount & 0x7F;
while((int) RunCountMasked!=0)
{
if((long) RunCountMasked>j)
{ /*Wrong Data*/
RunCountMasked=(unsigned char) j;
if(j==0)
{
break;
}
}
if((int) RunCount>0x80)
{
RunValue=(unsigned char) ReadBlobByte(image);
(void) ResetMagickMemory(ptrB,(int) RunValue,(size_t) RunCountMasked);
}
else {
count=ReadBlob(image,(size_t) RunCountMasked,ptrB);
}
ptrB+=(int) RunCountMasked;
j-=(int) RunCountMasked;
if (EOFBlob(image) != MagickFalse) goto Finish; /* wrong data: unexpected eof in line */
RunCount=(unsigned char) ReadBlobByte(image);
RunCountMasked=RunCount & 0x7F;
}
InsertRow(depth,BImgBuff,i,image);
}
/*detect monochrome image*/
if(palette==NULL)
{ /*attempt to detect binary (black&white) images*/
if ((image->storage_class == PseudoClass) &&
(IsGrayImage(image,&image->exception) != MagickFalse))
{
if(GetCutColors(image)==2)
{
for (i=0; i < (long)image->colors; i++)
{
register Quantum
sample;
sample=ScaleCharToQuantum(i);
if(image->colormap[i].red!=sample) goto Finish;
if(image->colormap[i].green!=sample) goto Finish;
if(image->colormap[i].blue!=sample) goto Finish;
}
image->colormap[1].red=image->colormap[1].green=image->colormap[1].blue=QuantumRange;
for (i=0; i < (long)image->rows; i++)
{
q=SetImagePixels(image,0,i,image->columns,1);
for (j=0; j < (long)image->columns; j++)
{
if(q->red==ScaleCharToQuantum(1))
{
q->red=q->green=q->blue=QuantumRange;
}
q++;
}
if (SyncImagePixels(image) == MagickFalse) goto Finish;
}
}
}
}
Finish:
if (BImgBuff != NULL)
BImgBuff=(unsigned char *) RelinquishMagickMemory(BImgBuff);
if (palette != NULL)
palette=DestroyImage(palette);
if (clone_info != NULL)
clone_info=DestroyImageInfo(clone_info);
if (EOFBlob(image) != MagickFalse)
ThrowFileException(exception,CorruptImageError,"UnexpectedEndOfFile",
image->filename);
CloseBlob(image);
return(GetFirstImageInList(image));
}
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% R e g i s t e r C U T I m a g e %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% RegisterCUTImage() adds attributes for the CUT 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 RegisterCUTImage method is:
%
% RegisterCUTImage(void)
%
*/
ModuleExport void RegisterCUTImage(void)
{
MagickInfo
*entry;
entry=SetMagickInfo("CUT");
entry->decoder=(DecoderHandler *) ReadCUTImage;
entry->seekable_stream=MagickTrue;
entry->description=AcquireString("DR Halo");
entry->module=AcquireString("CUT");
(void) RegisterMagickInfo(entry);
}
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% U n r e g i s t e r C U T I m a g e %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% UnregisterCUTImage() removes format registrations made by the
% CUT module from the list of supported formats.
%
% The format of the UnregisterCUTImage method is:
%
% UnregisterCUTImage(void)
%
*/
ModuleExport void UnregisterCUTImage(void)
{
(void) UnregisterMagickInfo("CUT");
}
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