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imagemagick/coders/pict.c

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Import Upstream version 6.9.11.60
2023-02-03 21:16:55 +08:00
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% PPPP IIIII CCCC TTTTT %
% P P I C T %
% PPPP I C T %
% P I C T %
% P IIIII CCCC T %
% %
% %
% Read/Write Apple Macintosh QuickDraw/PICT Format %
% %
% Software Design %
% Cristy %
% July 1992 %
% %
% %
% 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 "magick/studio.h"
#include "magick/blob.h"
#include "magick/blob-private.h"
#include "magick/cache.h"
#include "magick/channel.h"
#include "magick/color-private.h"
#include "magick/colormap.h"
#include "magick/colormap-private.h"
#include "magick/colorspace.h"
#include "magick/colorspace-private.h"
#include "magick/composite.h"
#include "magick/constitute.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/log.h"
#include "magick/magick.h"
#include "magick/memory_.h"
#include "magick/monitor.h"
#include "magick/monitor-private.h"
#include "magick/pixel-accessor.h"
#include "magick/profile.h"
#include "magick/quantum-private.h"
#include "magick/resource_.h"
#include "magick/static.h"
#include "magick/string_.h"
#include "magick/module.h"
#include "magick/transform.h"
#include "magick/utility.h"
/*
ImageMagick Macintosh PICT Methods.
*/
typedef struct _PICTCode
{
const char
*name;
ssize_t
length;
const char
*description;
} PICTCode;
typedef struct _PICTPixmap
{
short
version,
pack_type;
size_t
pack_size,
horizontal_resolution,
vertical_resolution;
short
pixel_type,
bits_per_pixel,
component_count,
component_size;
size_t
plane_bytes,
table,
reserved;
} PICTPixmap;
typedef struct _PICTRectangle
{
short
top,
left,
bottom,
right;
} PICTRectangle;
static const PICTCode
codes[] =
{
/* 0x00 */ { "NOP", 0, "nop" },
/* 0x01 */ { "Clip", 0, "clip" },
/* 0x02 */ { "BkPat", 8, "background pattern" },
/* 0x03 */ { "TxFont", 2, "text font (word)" },
/* 0x04 */ { "TxFace", 1, "text face (byte)" },
/* 0x05 */ { "TxMode", 2, "text mode (word)" },
/* 0x06 */ { "SpExtra", 4, "space extra (fixed point)" },
/* 0x07 */ { "PnSize", 4, "pen size (point)" },
/* 0x08 */ { "PnMode", 2, "pen mode (word)" },
/* 0x09 */ { "PnPat", 8, "pen pattern" },
/* 0x0a */ { "FillPat", 8, "fill pattern" },
/* 0x0b */ { "OvSize", 4, "oval size (point)" },
/* 0x0c */ { "Origin", 4, "dh, dv (word)" },
/* 0x0d */ { "TxSize", 2, "text size (word)" },
/* 0x0e */ { "FgColor", 4, "foreground color (ssize_tword)" },
/* 0x0f */ { "BkColor", 4, "background color (ssize_tword)" },
/* 0x10 */ { "TxRatio", 8, "numerator (point), denominator (point)" },
/* 0x11 */ { "Version", 1, "version (byte)" },
/* 0x12 */ { "BkPixPat", 0, "color background pattern" },
/* 0x13 */ { "PnPixPat", 0, "color pen pattern" },
/* 0x14 */ { "FillPixPat", 0, "color fill pattern" },
/* 0x15 */ { "PnLocHFrac", 2, "fractional pen position" },
/* 0x16 */ { "ChExtra", 2, "extra for each character" },
/* 0x17 */ { "reserved", 0, "reserved for Apple use" },
/* 0x18 */ { "reserved", 0, "reserved for Apple use" },
/* 0x19 */ { "reserved", 0, "reserved for Apple use" },
/* 0x1a */ { "RGBFgCol", 6, "RGB foreColor" },
/* 0x1b */ { "RGBBkCol", 6, "RGB backColor" },
/* 0x1c */ { "HiliteMode", 0, "hilite mode flag" },
/* 0x1d */ { "HiliteColor", 6, "RGB hilite color" },
/* 0x1e */ { "DefHilite", 0, "Use default hilite color" },
/* 0x1f */ { "OpColor", 6, "RGB OpColor for arithmetic modes" },
/* 0x20 */ { "Line", 8, "pnLoc (point), newPt (point)" },
/* 0x21 */ { "LineFrom", 4, "newPt (point)" },
/* 0x22 */ { "ShortLine", 6, "pnLoc (point, dh, dv (-128 .. 127))" },
/* 0x23 */ { "ShortLineFrom", 2, "dh, dv (-128 .. 127)" },
/* 0x24 */ { "reserved", -1, "reserved for Apple use" },
/* 0x25 */ { "reserved", -1, "reserved for Apple use" },
/* 0x26 */ { "reserved", -1, "reserved for Apple use" },
/* 0x27 */ { "reserved", -1, "reserved for Apple use" },
/* 0x28 */ { "LongText", 0, "txLoc (point), count (0..255), text" },
/* 0x29 */ { "DHText", 0, "dh (0..255), count (0..255), text" },
/* 0x2a */ { "DVText", 0, "dv (0..255), count (0..255), text" },
/* 0x2b */ { "DHDVText", 0, "dh, dv (0..255), count (0..255), text" },
/* 0x2c */ { "reserved", -1, "reserved for Apple use" },
/* 0x2d */ { "reserved", -1, "reserved for Apple use" },
/* 0x2e */ { "reserved", -1, "reserved for Apple use" },
/* 0x2f */ { "reserved", -1, "reserved for Apple use" },
/* 0x30 */ { "frameRect", 8, "rect" },
/* 0x31 */ { "paintRect", 8, "rect" },
/* 0x32 */ { "eraseRect", 8, "rect" },
/* 0x33 */ { "invertRect", 8, "rect" },
/* 0x34 */ { "fillRect", 8, "rect" },
/* 0x35 */ { "reserved", 8, "reserved for Apple use" },
/* 0x36 */ { "reserved", 8, "reserved for Apple use" },
/* 0x37 */ { "reserved", 8, "reserved for Apple use" },
/* 0x38 */ { "frameSameRect", 0, "rect" },
/* 0x39 */ { "paintSameRect", 0, "rect" },
/* 0x3a */ { "eraseSameRect", 0, "rect" },
/* 0x3b */ { "invertSameRect", 0, "rect" },
/* 0x3c */ { "fillSameRect", 0, "rect" },
/* 0x3d */ { "reserved", 0, "reserved for Apple use" },
/* 0x3e */ { "reserved", 0, "reserved for Apple use" },
/* 0x3f */ { "reserved", 0, "reserved for Apple use" },
/* 0x40 */ { "frameRRect", 8, "rect" },
/* 0x41 */ { "paintRRect", 8, "rect" },
/* 0x42 */ { "eraseRRect", 8, "rect" },
/* 0x43 */ { "invertRRect", 8, "rect" },
/* 0x44 */ { "fillRRrect", 8, "rect" },
/* 0x45 */ { "reserved", 8, "reserved for Apple use" },
/* 0x46 */ { "reserved", 8, "reserved for Apple use" },
/* 0x47 */ { "reserved", 8, "reserved for Apple use" },
/* 0x48 */ { "frameSameRRect", 0, "rect" },
/* 0x49 */ { "paintSameRRect", 0, "rect" },
/* 0x4a */ { "eraseSameRRect", 0, "rect" },
/* 0x4b */ { "invertSameRRect", 0, "rect" },
/* 0x4c */ { "fillSameRRect", 0, "rect" },
/* 0x4d */ { "reserved", 0, "reserved for Apple use" },
/* 0x4e */ { "reserved", 0, "reserved for Apple use" },
/* 0x4f */ { "reserved", 0, "reserved for Apple use" },
/* 0x50 */ { "frameOval", 8, "rect" },
/* 0x51 */ { "paintOval", 8, "rect" },
/* 0x52 */ { "eraseOval", 8, "rect" },
/* 0x53 */ { "invertOval", 8, "rect" },
/* 0x54 */ { "fillOval", 8, "rect" },
/* 0x55 */ { "reserved", 8, "reserved for Apple use" },
/* 0x56 */ { "reserved", 8, "reserved for Apple use" },
/* 0x57 */ { "reserved", 8, "reserved for Apple use" },
/* 0x58 */ { "frameSameOval", 0, "rect" },
/* 0x59 */ { "paintSameOval", 0, "rect" },
/* 0x5a */ { "eraseSameOval", 0, "rect" },
/* 0x5b */ { "invertSameOval", 0, "rect" },
/* 0x5c */ { "fillSameOval", 0, "rect" },
/* 0x5d */ { "reserved", 0, "reserved for Apple use" },
/* 0x5e */ { "reserved", 0, "reserved for Apple use" },
/* 0x5f */ { "reserved", 0, "reserved for Apple use" },
/* 0x60 */ { "frameArc", 12, "rect, startAngle, arcAngle" },
/* 0x61 */ { "paintArc", 12, "rect, startAngle, arcAngle" },
/* 0x62 */ { "eraseArc", 12, "rect, startAngle, arcAngle" },
/* 0x63 */ { "invertArc", 12, "rect, startAngle, arcAngle" },
/* 0x64 */ { "fillArc", 12, "rect, startAngle, arcAngle" },
/* 0x65 */ { "reserved", 12, "reserved for Apple use" },
/* 0x66 */ { "reserved", 12, "reserved for Apple use" },
/* 0x67 */ { "reserved", 12, "reserved for Apple use" },
/* 0x68 */ { "frameSameArc", 4, "rect, startAngle, arcAngle" },
/* 0x69 */ { "paintSameArc", 4, "rect, startAngle, arcAngle" },
/* 0x6a */ { "eraseSameArc", 4, "rect, startAngle, arcAngle" },
/* 0x6b */ { "invertSameArc", 4, "rect, startAngle, arcAngle" },
/* 0x6c */ { "fillSameArc", 4, "rect, startAngle, arcAngle" },
/* 0x6d */ { "reserved", 4, "reserved for Apple use" },
/* 0x6e */ { "reserved", 4, "reserved for Apple use" },
/* 0x6f */ { "reserved", 4, "reserved for Apple use" },
/* 0x70 */ { "framePoly", 0, "poly" },
/* 0x71 */ { "paintPoly", 0, "poly" },
/* 0x72 */ { "erasePoly", 0, "poly" },
/* 0x73 */ { "invertPoly", 0, "poly" },
/* 0x74 */ { "fillPoly", 0, "poly" },
/* 0x75 */ { "reserved", 0, "reserved for Apple use" },
/* 0x76 */ { "reserved", 0, "reserved for Apple use" },
/* 0x77 */ { "reserved", 0, "reserved for Apple use" },
/* 0x78 */ { "frameSamePoly", 0, "poly (NYI)" },
/* 0x79 */ { "paintSamePoly", 0, "poly (NYI)" },
/* 0x7a */ { "eraseSamePoly", 0, "poly (NYI)" },
/* 0x7b */ { "invertSamePoly", 0, "poly (NYI)" },
/* 0x7c */ { "fillSamePoly", 0, "poly (NYI)" },
/* 0x7d */ { "reserved", 0, "reserved for Apple use" },
/* 0x7e */ { "reserved", 0, "reserved for Apple use" },
/* 0x7f */ { "reserved", 0, "reserved for Apple use" },
/* 0x80 */ { "frameRgn", 0, "region" },
/* 0x81 */ { "paintRgn", 0, "region" },
/* 0x82 */ { "eraseRgn", 0, "region" },
/* 0x83 */ { "invertRgn", 0, "region" },
/* 0x84 */ { "fillRgn", 0, "region" },
/* 0x85 */ { "reserved", 0, "reserved for Apple use" },
/* 0x86 */ { "reserved", 0, "reserved for Apple use" },
/* 0x87 */ { "reserved", 0, "reserved for Apple use" },
/* 0x88 */ { "frameSameRgn", 0, "region (NYI)" },
/* 0x89 */ { "paintSameRgn", 0, "region (NYI)" },
/* 0x8a */ { "eraseSameRgn", 0, "region (NYI)" },
/* 0x8b */ { "invertSameRgn", 0, "region (NYI)" },
/* 0x8c */ { "fillSameRgn", 0, "region (NYI)" },
/* 0x8d */ { "reserved", 0, "reserved for Apple use" },
/* 0x8e */ { "reserved", 0, "reserved for Apple use" },
/* 0x8f */ { "reserved", 0, "reserved for Apple use" },
/* 0x90 */ { "BitsRect", 0, "copybits, rect clipped" },
/* 0x91 */ { "BitsRgn", 0, "copybits, rgn clipped" },
/* 0x92 */ { "reserved", -1, "reserved for Apple use" },
/* 0x93 */ { "reserved", -1, "reserved for Apple use" },
/* 0x94 */ { "reserved", -1, "reserved for Apple use" },
/* 0x95 */ { "reserved", -1, "reserved for Apple use" },
/* 0x96 */ { "reserved", -1, "reserved for Apple use" },
/* 0x97 */ { "reserved", -1, "reserved for Apple use" },
/* 0x98 */ { "PackBitsRect", 0, "packed copybits, rect clipped" },
/* 0x99 */ { "PackBitsRgn", 0, "packed copybits, rgn clipped" },
/* 0x9a */ { "DirectBitsRect", 0, "PixMap, srcRect, dstRect, mode, PixData" },
/* 0x9b */ { "DirectBitsRgn", 0, "PixMap, srcRect, dstRect, mode, maskRgn, PixData" },
/* 0x9c */ { "reserved", -1, "reserved for Apple use" },
/* 0x9d */ { "reserved", -1, "reserved for Apple use" },
/* 0x9e */ { "reserved", -1, "reserved for Apple use" },
/* 0x9f */ { "reserved", -1, "reserved for Apple use" },
/* 0xa0 */ { "ShortComment", 2, "kind (word)" },
/* 0xa1 */ { "LongComment", 0, "kind (word), size (word), data" }
};
/*
Forward declarations.
*/
static MagickBooleanType
WritePICTImage(const ImageInfo *,Image *);
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% D e c o d e I m a g e %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% DecodeImage decompresses an image via Macintosh pack bits decoding for
% Macintosh PICT images.
%
% The format of the DecodeImage method is:
%
% unsigned char *DecodeImage(Image *blob,Image *image,
% size_t bytes_per_line,const int bits_per_pixel,
% unsigned size_t extent)
%
% A description of each parameter follows:
%
% o image_info: the image info.
%
% o blob,image: the address of a structure of type Image.
%
% o bytes_per_line: This integer identifies the number of bytes in a
% scanline.
%
% o bits_per_pixel: the number of bits in a pixel.
%
% o extent: the number of pixels allocated.
%
*/
static const unsigned char *UnpackScanline(
const unsigned char *magick_restrict pixels,const unsigned int bits_per_pixel,
unsigned char *scanline,MagickSizeType *bytes_per_line)
{
const unsigned char
*p;
ssize_t
i;
unsigned char
*q;
p=pixels;
q=scanline;
switch (bits_per_pixel)
{
case 8:
case 16:
case 32:
return(pixels);
case 4:
{
for (i=0; i < (ssize_t) *bytes_per_line; i++)
{
*q++=(*p >> 4) & 0xff;
*q++=(*p & 15);
p++;
}
*bytes_per_line*=2;
break;
}
case 2:
{
for (i=0; i < (ssize_t) *bytes_per_line; i++)
{
*q++=(*p >> 6) & 0x03;
*q++=(*p >> 4) & 0x03;
*q++=(*p >> 2) & 0x03;
*q++=(*p & 3);
p++;
}
*bytes_per_line*=4;
break;
}
case 1:
{
for (i=0; i < (ssize_t) *bytes_per_line; i++)
{
*q++=(*p >> 7) & 0x01;
*q++=(*p >> 6) & 0x01;
*q++=(*p >> 5) & 0x01;
*q++=(*p >> 4) & 0x01;
*q++=(*p >> 3) & 0x01;
*q++=(*p >> 2) & 0x01;
*q++=(*p >> 1) & 0x01;
*q++=(*p & 0x01);
p++;
}
*bytes_per_line*=8;
break;
}
default:
break;
}
return(scanline);
}
static unsigned char *DecodeImage(Image *blob,Image *image,
size_t bytes_per_line,const unsigned int bits_per_pixel,size_t *extent)
{
MagickBooleanType
status;
MagickSizeType
number_pixels;
const unsigned char
*p;
ssize_t
i;
unsigned char
*q;
size_t
bytes_per_pixel,
length,
row_bytes,
scanline_length,
width;
ssize_t
count,
j,
y;
unsigned char
*pixels,
*scanline,
unpack_buffer[8*256];
/*
Determine pixel buffer size.
*/
if (bits_per_pixel <= 8)
bytes_per_line&=0x7fff;
width=image->columns;
bytes_per_pixel=1;
if (bits_per_pixel == 16)
{
bytes_per_pixel=2;
width*=2;
}
else
if (bits_per_pixel == 32)
width*=image->matte != MagickFalse ? 4 : 3;
if (bytes_per_line == 0)
bytes_per_line=width;
row_bytes=(size_t) (image->columns | 0x8000);
if (image->storage_class == DirectClass)
row_bytes=(size_t) (4*(image->columns | 0x8000));
/*
Allocate pixel and scanline buffer.
*/
pixels=(unsigned char *) AcquireQuantumMemory(image->rows,row_bytes*
sizeof(*pixels));
if (pixels == (unsigned char *) NULL)
return((unsigned char *) NULL);
*extent=row_bytes*image->rows*sizeof(*pixels);
(void) memset(pixels,0,*extent);
scanline=(unsigned char *) AcquireQuantumMemory(row_bytes,2*
sizeof(*scanline));
if (scanline == (unsigned char *) NULL)
{
pixels=(unsigned char *) RelinquishMagickMemory(pixels);
return((unsigned char *) NULL);
}
(void) memset(scanline,0,2*row_bytes*sizeof(*scanline));
(void) memset(unpack_buffer,0,sizeof(unpack_buffer));
status=MagickTrue;
if (bytes_per_line < 8)
{
/*
Pixels are already uncompressed.
*/
for (y=0; y < (ssize_t) image->rows; y++)
{
q=pixels+y*width;
number_pixels=bytes_per_line;
count=ReadBlob(blob,(size_t) number_pixels,scanline);
if (count != (ssize_t) number_pixels)
{
status=MagickFalse;
break;
}
p=UnpackScanline(scanline,bits_per_pixel,unpack_buffer,&number_pixels);
if ((q+number_pixels) > (pixels+(*extent)))
{
status=MagickFalse;
break;
}
(void) memcpy(q,p,(size_t) number_pixels);
}
scanline=(unsigned char *) RelinquishMagickMemory(scanline);
if (status == MagickFalse)
pixels=(unsigned char *) RelinquishMagickMemory(pixels);
return(pixels);
}
/*
Uncompress RLE pixels into uncompressed pixel buffer.
*/
for (y=0; y < (ssize_t) image->rows; y++)
{
q=pixels+y*width;
if (bytes_per_line > 200)
scanline_length=ReadBlobMSBShort(blob);
else
scanline_length=(size_t) ReadBlobByte(blob);
if ((scanline_length >= row_bytes) || (scanline_length == 0))
{
status=MagickFalse;
break;
}
count=ReadBlob(blob,scanline_length,scanline);
if (count != (ssize_t) scanline_length)
{
status=MagickFalse;
break;
}
for (j=0; j < (ssize_t) scanline_length; )
if ((scanline[j] & 0x80) == 0)
{
length=(size_t) ((scanline[j] & 0xff)+1);
number_pixels=length*bytes_per_pixel;
p=UnpackScanline(scanline+j+1,bits_per_pixel,unpack_buffer,
&number_pixels);
if ((q-pixels+number_pixels) <= *extent)
(void) memcpy(q,p,(size_t) number_pixels);
q+=number_pixels;
j+=(ssize_t) (length*bytes_per_pixel+1);
}
else
{
length=(size_t) (((scanline[j] ^ 0xff) & 0xff)+2);
number_pixels=bytes_per_pixel;
p=UnpackScanline(scanline+j+1,bits_per_pixel,unpack_buffer,
&number_pixels);
for (i=0; i < (ssize_t) length; i++)
{
if ((q-pixels+number_pixels) <= *extent)
(void) memcpy(q,p,(size_t) number_pixels);
q+=number_pixels;
}
j+=(ssize_t) bytes_per_pixel+1;
}
}
scanline=(unsigned char *) RelinquishMagickMemory(scanline);
if (status == MagickFalse)
pixels=(unsigned char *) RelinquishMagickMemory(pixels);
return(pixels);
}
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% E n c o d e I m a g e %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% EncodeImage compresses an image via Macintosh pack bits encoding
% for Macintosh PICT images.
%
% The format of the EncodeImage method is:
%
% size_t EncodeImage(Image *image,const unsigned char *scanline,
% const size_t bytes_per_line,unsigned char *pixels)
%
% A description of each parameter follows:
%
% o image: the address of a structure of type Image.
%
% o scanline: A pointer to an array of characters to pack.
%
% o bytes_per_line: the number of bytes in a scanline.
%
% o pixels: A pointer to an array of characters where the packed
% characters are stored.
%
*/
static size_t EncodeImage(Image *image,const unsigned char *scanline,
const size_t bytes_per_line,unsigned char *pixels)
{
#define MaxCount 128
#define MaxPackbitsRunlength 128
const unsigned char
*p;
ssize_t
i;
unsigned char
*q;
size_t
length;
ssize_t
count,
repeat_count,
runlength;
unsigned char
index;
/*
Pack scanline.
*/
assert(image != (Image *) NULL);
assert(image->signature == MagickCoreSignature);
if (image->debug != MagickFalse)
(void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
assert(scanline != (unsigned char *) NULL);
assert(pixels != (unsigned char *) NULL);
count=0;
runlength=0;
p=scanline+(bytes_per_line-1);
q=pixels;
index=(*p);
for (i=(ssize_t) bytes_per_line-1; i >= 0; i--)
{
if (index == *p)
runlength++;
else
{
if (runlength < 3)
while (runlength > 0)
{
*q++=(unsigned char) index;
runlength--;
count++;
if (count == MaxCount)
{
*q++=(unsigned char) (MaxCount-1);
count-=MaxCount;
}
}
else
{
if (count > 0)
*q++=(unsigned char) (count-1);
count=0;
while (runlength > 0)
{
repeat_count=runlength;
if (repeat_count > MaxPackbitsRunlength)
repeat_count=MaxPackbitsRunlength;
*q++=(unsigned char) index;
*q++=(unsigned char) (257-repeat_count);
runlength-=repeat_count;
}
}
runlength=1;
}
index=(*p);
p--;
}
if (runlength < 3)
while (runlength > 0)
{
*q++=(unsigned char) index;
runlength--;
count++;
if (count == MaxCount)
{
*q++=(unsigned char) (MaxCount-1);
count-=MaxCount;
}
}
else
{
if (count > 0)
*q++=(unsigned char) (count-1);
count=0;
while (runlength > 0)
{
repeat_count=runlength;
if (repeat_count > MaxPackbitsRunlength)
repeat_count=MaxPackbitsRunlength;
*q++=(unsigned char) index;
*q++=(unsigned char) (257-repeat_count);
runlength-=repeat_count;
}
}
if (count > 0)
*q++=(unsigned char) (count-1);
/*
Write the number of and the packed length.
*/
length=(size_t) (q-pixels);
if (bytes_per_line > 200)
{
(void) WriteBlobMSBShort(image,(unsigned short) length);
length+=2;
}
else
{
(void) WriteBlobByte(image,(unsigned char) length);
length++;
}
while (q != pixels)
{
q--;
(void) WriteBlobByte(image,*q);
}
return(length);
}
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% I s P I C T %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% IsPICT()() returns MagickTrue if the image format type, identified by the
% magick string, is PICT.
%
% The format of the ReadPICTImage method is:
%
% MagickBooleanType IsPICT(const unsigned char *magick,const size_t length)
%
% A description of each parameter follows:
%
% o magick: compare image format pattern against these bytes.
%
% o length: Specifies the length of the magick string.
%
*/
static MagickBooleanType IsPICT(const unsigned char *magick,const size_t length)
{
/*
Embedded OLE2 macintosh have "PICT" instead of 512 platform header.
*/
if (length < 12)
return(MagickFalse);
if (memcmp(magick,"PICT",4) == 0)
return(MagickTrue);
if (length < 528)
return(MagickFalse);
if (memcmp(magick+522,"\000\021\002\377\014\000",6) == 0)
return(MagickTrue);
return(MagickFalse);
}
#if !defined(macintosh)
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% R e a d P I C T I m a g e %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% ReadPICTImage() reads an Apple Macintosh QuickDraw/PICT 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 ReadPICTImage method is:
%
% Image *ReadPICTImage(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 MagickBooleanType ReadPixmap(Image *image,PICTPixmap *pixmap)
{
pixmap->version=(short) ReadBlobMSBShort(image);
pixmap->pack_type=(short) ReadBlobMSBShort(image);
pixmap->pack_size=ReadBlobMSBLong(image);
pixmap->horizontal_resolution=1UL*ReadBlobMSBShort(image);
(void) ReadBlobMSBShort(image);
pixmap->vertical_resolution=1UL*ReadBlobMSBShort(image);
(void) ReadBlobMSBShort(image);
pixmap->pixel_type=(short) ReadBlobMSBShort(image);
pixmap->bits_per_pixel=(short) ReadBlobMSBShort(image);
pixmap->component_count=(short) ReadBlobMSBShort(image);
pixmap->component_size=(short) ReadBlobMSBShort(image);
pixmap->plane_bytes=ReadBlobMSBLong(image);
pixmap->table=ReadBlobMSBLong(image);
pixmap->reserved=ReadBlobMSBLong(image);
if ((EOFBlob(image) != MagickFalse) || (pixmap->bits_per_pixel <= 0) ||
(pixmap->bits_per_pixel > 32) || (pixmap->component_count <= 0) ||
(pixmap->component_count > 4) || (pixmap->component_size <= 0))
return(MagickFalse);
return(MagickTrue);
}
static MagickBooleanType ReadRectangle(Image *image,PICTRectangle *rectangle)
{
rectangle->top=(short) ReadBlobMSBShort(image);
rectangle->left=(short) ReadBlobMSBShort(image);
rectangle->bottom=(short) ReadBlobMSBShort(image);
rectangle->right=(short) ReadBlobMSBShort(image);
if (((EOFBlob(image) != MagickFalse) ||
(((rectangle->bottom | rectangle->top |
rectangle->right | rectangle->left ) & 0x8000) != 0) ||
(rectangle->bottom < rectangle->top) ||
(rectangle->right < rectangle->left)))
return(MagickFalse);
return(MagickTrue);
}
static Image *ReadPICTImage(const ImageInfo *image_info,
ExceptionInfo *exception)
{
#define ThrowPICTException(exception,message) \
{ \
if (tile_image != (Image *) NULL) \
tile_image=DestroyImage(tile_image); \
if (read_info != (ImageInfo *) NULL) \
read_info=DestroyImageInfo(read_info); \
ThrowReaderException((exception),(message)); \
}
char
geometry[MaxTextExtent],
header_ole[4];
Image
*image,
*tile_image;
ImageInfo
*read_info;
IndexPacket
index;
int
c,
code;
MagickBooleanType
jpeg,
status;
PICTRectangle
frame;
PICTPixmap
pixmap;
IndexPacket
*indexes;
ssize_t
x;
PixelPacket
*q;
ssize_t
i;
size_t
extent,
length;
ssize_t
count,
flags,
j,
version,
y;
StringInfo
*profile;
/*
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);
status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception);
if (status == MagickFalse)
{
image=DestroyImageList(image);
return((Image *) NULL);
}
/*
Read PICT header.
*/
read_info=(ImageInfo *) NULL;
tile_image=(Image *) NULL;
pixmap.bits_per_pixel=0;
pixmap.component_count=0;
/*
Skip header : 512 for standard PICT and 4, ie "PICT" for OLE2
*/
header_ole[0]=ReadBlobByte(image);
header_ole[1]=ReadBlobByte(image);
header_ole[2]=ReadBlobByte(image);
header_ole[3]=ReadBlobByte(image);
if (!((header_ole[0] == 0x50) && (header_ole[1] == 0x49) &&
(header_ole[2] == 0x43) && (header_ole[3] == 0x54)))
for (i=0; i < 508; i++)
if (ReadBlobByte(image) == EOF)
break;
(void) ReadBlobMSBShort(image); /* skip picture size */
if (ReadRectangle(image,&frame) == MagickFalse)
ThrowPICTException(CorruptImageError,"ImproperImageHeader");
while ((c=ReadBlobByte(image)) == 0) ;
if (c != 0x11)
ThrowPICTException(CorruptImageError,"ImproperImageHeader");
version=(ssize_t) ReadBlobByte(image);
if (version == 2)
{
c=ReadBlobByte(image);
if (c != 0xff)
ThrowPICTException(CorruptImageError,"ImproperImageHeader");
}
else
if (version != 1)
ThrowPICTException(CorruptImageError,"ImproperImageHeader");
if ((frame.left < 0) || (frame.right < 0) || (frame.top < 0) ||
(frame.bottom < 0) || (frame.left >= frame.right) ||
(frame.top >= frame.bottom))
ThrowPICTException(CorruptImageError,"ImproperImageHeader");
/*
Create black canvas.
*/
flags=0;
image->depth=8;
image->columns=(unsigned int) (frame.right-frame.left);
image->rows=(unsigned int) (frame.bottom-frame.top);
image->x_resolution=DefaultResolution;
image->y_resolution=DefaultResolution;
image->units=UndefinedResolution;
if ((image_info->ping != MagickFalse) && (image_info->number_scenes != 0))
if (image->scene >= (image_info->scene+image_info->number_scenes-1))
{
(void) CloseBlob(image);
return(GetFirstImageInList(image));
}
status=SetImageExtent(image,image->columns,image->rows);
if (status != MagickFalse)
status=ResetImagePixels(image,exception);
if (status == MagickFalse)
{
InheritException(exception,&image->exception);
return(DestroyImageList(image));
}
/*
Interpret PICT opcodes.
*/
jpeg=MagickFalse;
for (code=0; EOFBlob(image) == MagickFalse; )
{
if ((image_info->ping != MagickFalse) && (image_info->number_scenes != 0))
if (image->scene >= (image_info->scene+image_info->number_scenes-1))
break;
if ((version == 1) || ((TellBlob(image) % 2) != 0))
code=ReadBlobByte(image);
if (version == 2)
code=ReadBlobMSBSignedShort(image);
code&=0xffff;
if (code < 0)
break;
if (code == 0)
continue;
if (code > 0xa1)
{
if (image->debug != MagickFalse)
(void) LogMagickEvent(CoderEvent,GetMagickModule(),"%04X:",code);
}
else
{
if (image->debug != MagickFalse)
(void) LogMagickEvent(CoderEvent,GetMagickModule(),
" %04X %s: %s",code,codes[code].name,codes[code].description);
switch (code)
{
case 0x01:
{
/*
Clipping rectangle.
*/
length=ReadBlobMSBShort(image);
if ((MagickSizeType) length > GetBlobSize(image))
ThrowPICTException(CorruptImageError,
"InsufficientImageDataInFile");
if (length != 0x000a)
{
for (i=0; i < (ssize_t) (length-2); i++)
if (ReadBlobByte(image) == EOF)
break;
break;
}
if (ReadRectangle(image,&frame) == MagickFalse)
ThrowPICTException(CorruptImageError,"ImproperImageHeader");
if (((frame.left & 0x8000) != 0) || ((frame.top & 0x8000) != 0))
break;
image->columns=(size_t) (frame.right-frame.left);
image->rows=(size_t) (frame.bottom-frame.top);
if (image_info->ping != MagickFalse)
break;
status=SetImageExtent(image,image->columns,image->rows);
if (status != MagickFalse)
status=ResetImagePixels(image,&image->exception);
if (status == MagickFalse)
{
InheritException(exception,&image->exception);
return(DestroyImageList(image));
}
break;
}
case 0x12:
case 0x13:
case 0x14:
{
ssize_t
pattern;
size_t
height,
width;
/*
Skip pattern definition.
*/
pattern=(ssize_t) ReadBlobMSBShort(image);
for (i=0; i < 8; i++)
if (ReadBlobByte(image) == EOF)
break;
if (pattern == 2)
{
for (i=0; i < 5; i++)
if (ReadBlobByte(image) == EOF)
break;
break;
}
if (pattern != 1)
ThrowPICTException(CorruptImageError,"UnknownPatternType");
length=ReadBlobMSBShort(image);
if ((MagickSizeType) length > GetBlobSize(image))
ThrowPICTException(CorruptImageError,
"InsufficientImageDataInFile");
if (ReadRectangle(image,&frame) == MagickFalse)
ThrowPICTException(CorruptImageError,"ImproperImageHeader");
if (ReadPixmap(image,&pixmap) == MagickFalse)
ThrowPICTException(CorruptImageError,"ImproperImageHeader");
image->depth=(size_t) pixmap.component_size;
image->x_resolution=1.0*pixmap.horizontal_resolution;
image->y_resolution=1.0*pixmap.vertical_resolution;
image->units=PixelsPerInchResolution;
(void) ReadBlobMSBLong(image);
flags=(ssize_t) ReadBlobMSBShort(image);
length=ReadBlobMSBShort(image);
if ((MagickSizeType) length > GetBlobSize(image))
ThrowPICTException(CorruptImageError,
"InsufficientImageDataInFile");
for (i=0; i <= (ssize_t) length; i++)
(void) ReadBlobMSBLong(image);
width=(size_t) (frame.bottom-frame.top);
height=(size_t) (frame.right-frame.left);
if (pixmap.bits_per_pixel <= 8)
length&=0x7fff;
if (pixmap.bits_per_pixel == 16)
width<<=1;
if (length == 0)
length=width;
if (length < 8)
{
for (i=0; i < (ssize_t) (length*height); i++)
if (ReadBlobByte(image) == EOF)
break;
}
else
for (i=0; i < (ssize_t) height; i++)
{
size_t
scanline_length;
if (EOFBlob(image) != MagickFalse)
break;
if (length > 200)
scanline_length=ReadBlobMSBShort(image);
else
scanline_length=ReadBlobByte(image);
if ((MagickSizeType) scanline_length > GetBlobSize(image))
ThrowPICTException(CorruptImageError,
"InsufficientImageDataInFile");
for (j=0; j < (ssize_t) scanline_length; j++)
if (ReadBlobByte(image) == EOF)
break;
}
break;
}
case 0x1b:
{
/*
Initialize image background color.
*/
image->background_color.red=(Quantum)
ScaleShortToQuantum(ReadBlobMSBShort(image));
image->background_color.green=(Quantum)
ScaleShortToQuantum(ReadBlobMSBShort(image));
image->background_color.blue=(Quantum)
ScaleShortToQuantum(ReadBlobMSBShort(image));
break;
}
case 0x70:
case 0x71:
case 0x72:
case 0x73:
case 0x74:
case 0x75:
case 0x76:
case 0x77:
{
/*
Skip polygon or region.
*/
length=ReadBlobMSBShort(image);
if ((MagickSizeType) length > GetBlobSize(image))
ThrowPICTException(CorruptImageError,
"InsufficientImageDataInFile");
for (i=0; i < (ssize_t) (length-2); i++)
if (ReadBlobByte(image) == EOF)
break;
break;
}
case 0x90:
case 0x91:
case 0x98:
case 0x99:
case 0x9a:
case 0x9b:
{
ssize_t
bytes_per_line;
PICTRectangle
source,
destination;
unsigned char
*p;
size_t
j;
unsigned char
*pixels;
/*
Pixmap clipped by a rectangle.
*/
bytes_per_line=0;
if ((code != 0x9a) && (code != 0x9b))
bytes_per_line=(ssize_t) ReadBlobMSBShort(image);
else
{
(void) ReadBlobMSBShort(image);
(void) ReadBlobMSBShort(image);
(void) ReadBlobMSBShort(image);
}
if (ReadRectangle(image,&frame) == MagickFalse)
ThrowPICTException(CorruptImageError,"ImproperImageHeader");
/*
Initialize tile image.
*/
tile_image=CloneImage(image,(size_t) (frame.right-frame.left),
(size_t) (frame.bottom-frame.top),MagickTrue,exception);
if (tile_image == (Image *) NULL)
ThrowPICTException(CorruptImageError,"ImproperImageHeader");
status=ResetImagePixels(tile_image,exception);
if ((code == 0x9a) || (code == 0x9b) ||
((bytes_per_line & 0x8000) != 0))
{
if (ReadPixmap(image,&pixmap) == MagickFalse)
ThrowPICTException(CorruptImageError,"ImproperImageHeader");
tile_image->depth=(size_t) pixmap.component_size;
tile_image->matte=pixmap.component_count == 4 ?
MagickTrue : MagickFalse;
tile_image->x_resolution=(double) pixmap.horizontal_resolution;
tile_image->y_resolution=(double) pixmap.vertical_resolution;
tile_image->units=PixelsPerInchResolution;
if (tile_image->matte != MagickFalse)
(void) SetImageAlphaChannel(tile_image,OpaqueAlphaChannel);
}
if ((code != 0x9a) && (code != 0x9b))
{
/*
Initialize colormap.
*/
tile_image->colors=2;
if ((bytes_per_line & 0x8000) != 0)
{
(void) ReadBlobMSBLong(image);
flags=(ssize_t) ReadBlobMSBShort(image);
tile_image->colors=1UL*ReadBlobMSBShort(image)+1;
}
status=AcquireImageColormap(tile_image,tile_image->colors);
if (status == MagickFalse)
ThrowPICTException(ResourceLimitError,
"MemoryAllocationFailed");
if ((bytes_per_line & 0x8000) != 0)
{
for (i=0; i < (ssize_t) tile_image->colors; i++)
{
j=ReadBlobMSBShort(image) % tile_image->colors;
if ((flags & 0x8000) != 0)
j=(size_t) i;
tile_image->colormap[j].red=(Quantum)
ScaleShortToQuantum(ReadBlobMSBShort(image));
tile_image->colormap[j].green=(Quantum)
ScaleShortToQuantum(ReadBlobMSBShort(image));
tile_image->colormap[j].blue=(Quantum)
ScaleShortToQuantum(ReadBlobMSBShort(image));
}
}
else
{
for (i=0; i < (ssize_t) tile_image->colors; i++)
{
tile_image->colormap[i].red=(Quantum) (QuantumRange-
tile_image->colormap[i].red);
tile_image->colormap[i].green=(Quantum) (QuantumRange-
tile_image->colormap[i].green);
tile_image->colormap[i].blue=(Quantum) (QuantumRange-
tile_image->colormap[i].blue);
}
}
}
if (EOFBlob(image) != MagickFalse)
ThrowPICTException(CorruptImageError,
"InsufficientImageDataInFile");
if (ReadRectangle(image,&source) == MagickFalse)
ThrowPICTException(CorruptImageError,"ImproperImageHeader");
if (ReadRectangle(image,&destination) == MagickFalse)
ThrowPICTException(CorruptImageError,"ImproperImageHeader");
(void) ReadBlobMSBShort(image);
if ((code == 0x91) || (code == 0x99) || (code == 0x9b))
{
/*
Skip region.
*/
length=ReadBlobMSBShort(image);
if ((MagickSizeType) length > GetBlobSize(image))
ThrowPICTException(CorruptImageError,
"InsufficientImageDataInFile");
for (i=0; i < (ssize_t) (length-2); i++)
if (ReadBlobByte(image) == EOF)
break;
}
if ((code != 0x9a) && (code != 0x9b) &&
(bytes_per_line & 0x8000) == 0)
pixels=DecodeImage(image,tile_image,(size_t) bytes_per_line,1,
&extent);
else
pixels=DecodeImage(image,tile_image,(unsigned int) bytes_per_line,
(unsigned int) pixmap.bits_per_pixel,&extent);
if (pixels == (unsigned char *) NULL)
ThrowPICTException(CorruptImageError,"UnableToUncompressImage");
/*
Convert PICT tile image to pixel packets.
*/
p=pixels;
for (y=0; y < (ssize_t) tile_image->rows; y++)
{
if (p > (pixels+extent+image->columns))
{
pixels=(unsigned char *) RelinquishMagickMemory(pixels);
ThrowPICTException(CorruptImageError,"NotEnoughPixelData");
}
q=QueueAuthenticPixels(tile_image,0,y,tile_image->columns,1,
exception);
if (q == (PixelPacket *) NULL)
break;
indexes=GetAuthenticIndexQueue(tile_image);
for (x=0; x < (ssize_t) tile_image->columns; x++)
{
if (tile_image->storage_class == PseudoClass)
{
index=ConstrainColormapIndex(tile_image,(ssize_t) *p);
SetPixelIndex(indexes+x,index);
SetPixelRed(q,
tile_image->colormap[(ssize_t) index].red);
SetPixelGreen(q,
tile_image->colormap[(ssize_t) index].green);
SetPixelBlue(q,
tile_image->colormap[(ssize_t) index].blue);
}
else
{
if (pixmap.bits_per_pixel == 16)
{
i=(ssize_t) (*p++);
j=(*p);
SetPixelRed(q,ScaleCharToQuantum(
(unsigned char) ((i & 0x7c) << 1)));
SetPixelGreen(q,ScaleCharToQuantum(
(unsigned char) (((i & 0x03) << 6) |
((j & 0xe0) >> 2))));
SetPixelBlue(q,ScaleCharToQuantum(
(unsigned char) ((j & 0x1f) << 3)));
}
else
if (tile_image->matte == MagickFalse)
{
if (p > (pixels+extent+2*image->columns))
ThrowPICTException(CorruptImageError,
"NotEnoughPixelData");
SetPixelRed(q,ScaleCharToQuantum(*p));
SetPixelGreen(q,ScaleCharToQuantum(
*(p+tile_image->columns)));
SetPixelBlue(q,ScaleCharToQuantum(
*(p+2*tile_image->columns)));
}
else
{
if (p > (pixels+extent+3*image->columns))
ThrowPICTException(CorruptImageError,
"NotEnoughPixelData");
SetPixelAlpha(q,ScaleCharToQuantum(*p));
SetPixelRed(q,ScaleCharToQuantum(
*(p+tile_image->columns)));
SetPixelGreen(q,ScaleCharToQuantum(
*(p+2*tile_image->columns)));
SetPixelBlue(q,ScaleCharToQuantum(
*(p+3*tile_image->columns)));
}
}
p++;
q++;
}
if (SyncAuthenticPixels(tile_image,exception) == MagickFalse)
break;
if ((tile_image->storage_class == DirectClass) &&
(pixmap.bits_per_pixel != 16))
{
p+=(pixmap.component_count-1)*tile_image->columns;
if (p < pixels)
break;
}
status=SetImageProgress(image,LoadImageTag,(MagickOffsetType) y,
tile_image->rows);
if (status == MagickFalse)
break;
}
pixels=(unsigned char *) RelinquishMagickMemory(pixels);
if ((jpeg == MagickFalse) && (EOFBlob(image) == MagickFalse))
if ((code == 0x9a) || (code == 0x9b) ||
((bytes_per_line & 0x8000) != 0))
(void) CompositeImage(image,CopyCompositeOp,tile_image,
(ssize_t) destination.left,(ssize_t) destination.top);
tile_image=DestroyImage(tile_image);
break;
}
case 0xa1:
{
unsigned char
*info;
size_t
type;
/*
Comment.
*/
type=ReadBlobMSBShort(image);
length=ReadBlobMSBShort(image);
if ((MagickSizeType) length > GetBlobSize(image))
ThrowPICTException(CorruptImageError,
"InsufficientImageDataInFile");
if (length == 0)
break;
(void) ReadBlobMSBLong(image);
length-=MagickMin(length,4);
if (length == 0)
break;
info=(unsigned char *) AcquireQuantumMemory(length,sizeof(*info));
if (info == (unsigned char *) NULL)
break;
count=ReadBlob(image,length,info);
if (count != (ssize_t) length)
{
info=(unsigned char *) RelinquishMagickMemory(info);
ThrowPICTException(ResourceLimitError,"UnableToReadImageData");
}
switch (type)
{
case 0xe0:
{
profile=BlobToStringInfo((const void *) NULL,length);
SetStringInfoDatum(profile,info);
status=SetImageProfile(image,"icc",profile);
profile=DestroyStringInfo(profile);
if (status == MagickFalse)
{
info=(unsigned char *) RelinquishMagickMemory(info);
ThrowPICTException(ResourceLimitError,
"MemoryAllocationFailed");
}
break;
}
case 0x1f2:
{
profile=BlobToStringInfo((const void *) NULL,length);
SetStringInfoDatum(profile,info);
status=SetImageProfile(image,"iptc",profile);
if (status == MagickFalse)
{
info=(unsigned char *) RelinquishMagickMemory(info);
ThrowPICTException(ResourceLimitError,
"MemoryAllocationFailed");
}
profile=DestroyStringInfo(profile);
break;
}
default:
break;
}
info=(unsigned char *) RelinquishMagickMemory(info);
break;
}
default:
{
/*
Skip to next op code.
*/
if (codes[code].length == -1)
(void) ReadBlobMSBShort(image);
else
for (i=0; i < (ssize_t) codes[code].length; i++)
if (ReadBlobByte(image) == EOF)
break;
}
}
}
if (code == 0xc00)
{
/*
Skip header.
*/
for (i=0; i < 24; i++)
if (ReadBlobByte(image) == EOF)
break;
continue;
}
if (((code >= 0xb0) && (code <= 0xcf)) ||
((code >= 0x8000) && (code <= 0x80ff)))
continue;
if (code == 0x8200)
{
/*
Embedded JPEG.
*/
jpeg=MagickTrue;
length=ReadBlobMSBLong(image);
if ((MagickSizeType) length > GetBlobSize(image))
ThrowPICTException(CorruptImageError,"InsufficientImageDataInFile");
if (length > 154)
{
const void
*stream;
ssize_t
count;
unsigned char
*pixels;
for (i=0; i < 6; i++)
(void) ReadBlobMSBLong(image);
if (ReadRectangle(image,&frame) == MagickFalse)
ThrowPICTException(CorruptImageError,"ImproperImageHeader");
for (i=0; i < 122; i++)
if (ReadBlobByte(image) == EOF)
break;
length-=154;
pixels=(unsigned char *) AcquireQuantumMemory(length,
sizeof(*pixels));
if (pixels == (unsigned char *) NULL)
ThrowPICTException(ResourceLimitError,"MemoryAllocationFailed");
stream=ReadBlobStream(image,length,pixels,&count);
if (count != (ssize_t) length)
{
pixels=(unsigned char *) RelinquishMagickMemory(pixels);
ThrowPICTException(CorruptImageError,"ImproperImageHeader");
}
read_info=AcquireImageInfo();
(void) FormatLocaleString(read_info->filename,MaxTextExtent,
"jpeg:%s",image_info->filename);
tile_image=BlobToImage(read_info,stream,count,exception);
pixels=(unsigned char *) RelinquishMagickMemory(pixels);
read_info=DestroyImageInfo(read_info);
}
if (tile_image == (Image *) NULL)
continue;
(void) FormatLocaleString(geometry,MaxTextExtent,"%.20gx%.20g",
(double) MagickMax(image->columns,tile_image->columns),
(double) MagickMax(image->rows,tile_image->rows));
(void) SetImageExtent(image,
MagickMax(image->columns,tile_image->columns),
MagickMax(image->rows,tile_image->rows));
(void) TransformImageColorspace(image,tile_image->colorspace);
(void) CompositeImage(image,CopyCompositeOp,tile_image,(ssize_t)
frame.left,(ssize_t) frame.right);
image->compression=tile_image->compression;
tile_image=DestroyImage(tile_image);
continue;
}
if ((code == 0xff) || (code == 0xffff))
break;
if (((code >= 0xd0) && (code <= 0xfe)) ||
((code >= 0x8100) && (code <= 0xffff)))
{
/*
Skip reserved.
*/
length=ReadBlobMSBShort(image);
if ((MagickSizeType) length > GetBlobSize(image))
ThrowPICTException(CorruptImageError,"InsufficientImageDataInFile");
for (i=0; i < (ssize_t) length; i++)
if (ReadBlobByte(image) == EOF)
break;
continue;
}
if ((code >= 0x100) && (code <= 0x7fff))
{
/*
Skip reserved.
*/
length=(size_t) ((code >> 7) & 0xff);
if ((MagickSizeType) length > GetBlobSize(image))
ThrowPICTException(CorruptImageError,"InsufficientImageDataInFile");
for (i=0; i < (ssize_t) length; i++)
if (ReadBlobByte(image) == EOF)
break;
continue;
}
}
(void) CloseBlob(image);
return(GetFirstImageInList(image));
}
#endif
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% R e g i s t e r P I C T I m a g e %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% RegisterPICTImage() adds attributes for the PICT 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 RegisterPICTImage method is:
%
% size_t RegisterPICTImage(void)
%
*/
ModuleExport size_t RegisterPICTImage(void)
{
MagickInfo
*entry;
entry=SetMagickInfo("PCT");
entry->decoder=(DecodeImageHandler *) ReadPICTImage;
entry->encoder=(EncodeImageHandler *) WritePICTImage;
entry->adjoin=MagickFalse;
entry->seekable_stream=MagickTrue;
entry->description=ConstantString("Apple Macintosh QuickDraw/PICT");
entry->magick=(IsImageFormatHandler *) IsPICT;
entry->magick_module=ConstantString("PICT");
(void) RegisterMagickInfo(entry);
entry=SetMagickInfo("PICT");
entry->decoder=(DecodeImageHandler *) ReadPICTImage;
entry->encoder=(EncodeImageHandler *) WritePICTImage;
entry->adjoin=MagickFalse;
entry->seekable_stream=MagickTrue;
entry->description=ConstantString("Apple Macintosh QuickDraw/PICT");
entry->magick=(IsImageFormatHandler *) IsPICT;
entry->magick_module=ConstantString("PICT");
(void) RegisterMagickInfo(entry);
return(MagickImageCoderSignature);
}
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% U n r e g i s t e r P I C T I m a g e %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% UnregisterPICTImage() removes format registrations made by the
% PICT module from the list of supported formats.
%
% The format of the UnregisterPICTImage method is:
%
% UnregisterPICTImage(void)
%
*/
ModuleExport void UnregisterPICTImage(void)
{
(void) UnregisterMagickInfo("PCT");
(void) UnregisterMagickInfo("PICT");
}
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% W r i t e P I C T I m a g e %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% WritePICTImage() writes an image to a file in the Apple Macintosh
% QuickDraw/PICT image format.
%
% The format of the WritePICTImage method is:
%
% MagickBooleanType WritePICTImage(const ImageInfo *image_info,
% Image *image)
%
% A description of each parameter follows.
%
% o image_info: the image info.
%
% o image: The image.
%
*/
static MagickBooleanType WritePICTImage(const ImageInfo *image_info,
Image *image)
{
#define MaxCount 128
#define PictCropRegionOp 0x01
#define PictEndOfPictureOp 0xff
#define PictJPEGOp 0x8200
#define PictInfoOp 0x0C00
#define PictInfoSize 512
#define PictPixmapOp 0x9A
#define PictPICTOp 0x98
#define PictVersion 0x11
const StringInfo
*profile;
double
x_resolution,
y_resolution;
MagickBooleanType
status;
MagickOffsetType
offset;
PICTPixmap
pixmap;
PICTRectangle
bounds,
crop_rectangle,
destination_rectangle,
frame_rectangle,
size_rectangle,
source_rectangle;
const IndexPacket
*indexes;
const PixelPacket
*p;
ssize_t
i,
x;
size_t
bytes_per_line,
count,
row_bytes,
storage_class;
ssize_t
y;
unsigned char
*buffer,
*packed_scanline,
*scanline;
unsigned short
base_address,
transfer_mode;
/*
Open output image file.
*/
assert(image_info != (const ImageInfo *) NULL);
assert(image_info->signature == MagickCoreSignature);
assert(image != (Image *) NULL);
assert(image->signature == MagickCoreSignature);
if (image->debug != MagickFalse)
(void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
if ((image->columns > 65535L) || (image->rows > 65535L))
ThrowWriterException(ImageError,"WidthOrHeightExceedsLimit");
status=OpenBlob(image_info,image,WriteBinaryBlobMode,&image->exception);
if (status == MagickFalse)
return(status);
if (IssRGBCompatibleColorspace(image->colorspace) == MagickFalse)
(void) TransformImageColorspace(image,sRGBColorspace);
/*
Initialize image info.
*/
size_rectangle.top=0;
size_rectangle.left=0;
size_rectangle.bottom=(short) image->rows;
size_rectangle.right=(short) image->columns;
frame_rectangle=size_rectangle;
crop_rectangle=size_rectangle;
source_rectangle=size_rectangle;
destination_rectangle=size_rectangle;
base_address=0xff;
row_bytes=image->columns;
bounds.top=0;
bounds.left=0;
bounds.bottom=(short) image->rows;
bounds.right=(short) image->columns;
pixmap.version=0;
pixmap.pack_type=0;
pixmap.pack_size=0;
pixmap.pixel_type=0;
pixmap.bits_per_pixel=8;
pixmap.component_count=1;
pixmap.component_size=8;
pixmap.plane_bytes=0;
pixmap.table=0;
pixmap.reserved=0;
transfer_mode=0;
x_resolution=0.0;
y_resolution=0.0;
if ((image->x_resolution > MagickEpsilon) &&
(image->y_resolution > MagickEpsilon))
{
x_resolution=image->x_resolution;
y_resolution=image->y_resolution;
if (image->units == PixelsPerCentimeterResolution)
{
x_resolution*=2.54;
y_resolution*=2.54;
}
}
storage_class=image->storage_class;
if (image_info->compression == JPEGCompression)
storage_class=DirectClass;
if (storage_class == DirectClass)
{
pixmap.component_count=image->matte != MagickFalse ? 4 : 3;
pixmap.pixel_type=16;
pixmap.bits_per_pixel=32;
pixmap.pack_type=0x04;
transfer_mode=0x40;
row_bytes=4*image->columns;
}
/*
Allocate memory.
*/
bytes_per_line=image->columns;
if (storage_class == DirectClass)
bytes_per_line*=image->matte != MagickFalse ? 4 : 3;
if ((bytes_per_line == 0) || (bytes_per_line > 0x7FFFU) ||
((row_bytes+MaxCount*2U) >= 0x7FFFU))
ThrowWriterException(ImageError,"WidthOrHeightExceedsLimit");
buffer=(unsigned char *) AcquireQuantumMemory(PictInfoSize,sizeof(*buffer));
packed_scanline=(unsigned char *) AcquireQuantumMemory((size_t)
(row_bytes+2*MaxCount),sizeof(*packed_scanline));
scanline=(unsigned char *) AcquireQuantumMemory(row_bytes,sizeof(*scanline));
if ((buffer == (unsigned char *) NULL) ||
(packed_scanline == (unsigned char *) NULL) ||
(scanline == (unsigned char *) NULL))
{
if (scanline != (unsigned char *) NULL)
scanline=(unsigned char *) RelinquishMagickMemory(scanline);
if (packed_scanline != (unsigned char *) NULL)
packed_scanline=(unsigned char *) RelinquishMagickMemory(
packed_scanline);
if (buffer != (unsigned char *) NULL)
buffer=(unsigned char *) RelinquishMagickMemory(buffer);
ThrowWriterException(ResourceLimitError,"MemoryAllocationFailed");
}
(void) memset(scanline,0,row_bytes);
(void) memset(packed_scanline,0,(size_t) (row_bytes+2*MaxCount)*
sizeof(*packed_scanline));
/*
Write header, header size, size bounding box, version, and reserved.
*/
(void) memset(buffer,0,PictInfoSize);
(void) WriteBlob(image,PictInfoSize,buffer);
(void) WriteBlobMSBShort(image,0);
(void) WriteBlobMSBShort(image,(unsigned short) size_rectangle.top);
(void) WriteBlobMSBShort(image,(unsigned short) size_rectangle.left);
(void) WriteBlobMSBShort(image,(unsigned short) size_rectangle.bottom);
(void) WriteBlobMSBShort(image,(unsigned short) size_rectangle.right);
(void) WriteBlobMSBShort(image,PictVersion);
(void) WriteBlobMSBShort(image,0x02ff); /* version #2 */
(void) WriteBlobMSBShort(image,PictInfoOp);
(void) WriteBlobMSBLong(image,0xFFFE0000U);
/*
Write full size of the file, resolution, frame bounding box, and reserved.
*/
(void) WriteBlobMSBShort(image,(unsigned short) x_resolution);
(void) WriteBlobMSBShort(image,0x0000);
(void) WriteBlobMSBShort(image,(unsigned short) y_resolution);
(void) WriteBlobMSBShort(image,0x0000);
(void) WriteBlobMSBShort(image,(unsigned short) frame_rectangle.top);
(void) WriteBlobMSBShort(image,(unsigned short) frame_rectangle.left);
(void) WriteBlobMSBShort(image,(unsigned short) frame_rectangle.bottom);
(void) WriteBlobMSBShort(image,(unsigned short) frame_rectangle.right);
(void) WriteBlobMSBLong(image,0x00000000L);
profile=GetImageProfile(image,"iptc");
if (profile != (StringInfo *) NULL)
{
(void) WriteBlobMSBShort(image,0xa1);
(void) WriteBlobMSBShort(image,0x1f2);
(void) WriteBlobMSBShort(image,(unsigned short)
(GetStringInfoLength(profile)+4));
(void) WriteBlobString(image,"8BIM");
(void) WriteBlob(image,GetStringInfoLength(profile),
GetStringInfoDatum(profile));
}
profile=GetImageProfile(image,"icc");
if (profile != (StringInfo *) NULL)
{
(void) WriteBlobMSBShort(image,0xa1);
(void) WriteBlobMSBShort(image,0xe0);
(void) WriteBlobMSBShort(image,(unsigned short)
(GetStringInfoLength(profile)+4));
(void) WriteBlobMSBLong(image,0x00000000U);
(void) WriteBlob(image,GetStringInfoLength(profile),
GetStringInfoDatum(profile));
(void) WriteBlobMSBShort(image,0xa1);
(void) WriteBlobMSBShort(image,0xe0);
(void) WriteBlobMSBShort(image,4);
(void) WriteBlobMSBLong(image,0x00000002U);
}
/*
Write crop region opcode and crop bounding box.
*/
(void) WriteBlobMSBShort(image,PictCropRegionOp);
(void) WriteBlobMSBShort(image,0xa);
(void) WriteBlobMSBShort(image,(unsigned short) crop_rectangle.top);
(void) WriteBlobMSBShort(image,(unsigned short) crop_rectangle.left);
(void) WriteBlobMSBShort(image,(unsigned short) crop_rectangle.bottom);
(void) WriteBlobMSBShort(image,(unsigned short) crop_rectangle.right);
if (image_info->compression == JPEGCompression)
{
Image
*jpeg_image;
ImageInfo
*jpeg_info;
size_t
length;
unsigned char
*blob;
jpeg_image=CloneImage(image,0,0,MagickTrue,&image->exception);
if (jpeg_image == (Image *) NULL)
{
(void) CloseBlob(image);
return(MagickFalse);
}
jpeg_info=CloneImageInfo(image_info);
(void) CopyMagickString(jpeg_info->magick,"JPEG",MaxTextExtent);
length=0;
blob=(unsigned char *) ImageToBlob(jpeg_info,jpeg_image,&length,
&image->exception);
jpeg_info=DestroyImageInfo(jpeg_info);
if (blob == (unsigned char *) NULL)
return(MagickFalse);
jpeg_image=DestroyImage(jpeg_image);
(void) WriteBlobMSBShort(image,PictJPEGOp);
(void) WriteBlobMSBLong(image,(unsigned int) length+154);
(void) WriteBlobMSBShort(image,0x0000);
(void) WriteBlobMSBLong(image,0x00010000U);
(void) WriteBlobMSBLong(image,0x00000000U);
(void) WriteBlobMSBLong(image,0x00000000U);
(void) WriteBlobMSBLong(image,0x00000000U);
(void) WriteBlobMSBLong(image,0x00010000U);
(void) WriteBlobMSBLong(image,0x00000000U);
(void) WriteBlobMSBLong(image,0x00000000U);
(void) WriteBlobMSBLong(image,0x00000000U);
(void) WriteBlobMSBLong(image,0x40000000U);
(void) WriteBlobMSBLong(image,0x00000000U);
(void) WriteBlobMSBLong(image,0x00000000U);
(void) WriteBlobMSBLong(image,0x00000000U);
(void) WriteBlobMSBLong(image,0x00400000U);
(void) WriteBlobMSBShort(image,0x0000);
(void) WriteBlobMSBShort(image,(unsigned short) image->rows);
(void) WriteBlobMSBShort(image,(unsigned short) image->columns);
(void) WriteBlobMSBShort(image,0x0000);
(void) WriteBlobMSBShort(image,768);
(void) WriteBlobMSBShort(image,0x0000);
(void) WriteBlobMSBLong(image,0x00000000U);
(void) WriteBlobMSBLong(image,0x00566A70U);
(void) WriteBlobMSBLong(image,0x65670000U);
(void) WriteBlobMSBLong(image,0x00000000U);
(void) WriteBlobMSBLong(image,0x00000001U);
(void) WriteBlobMSBLong(image,0x00016170U);
(void) WriteBlobMSBLong(image,0x706C0000U);
(void) WriteBlobMSBLong(image,0x00000000U);
(void) WriteBlobMSBShort(image,768);
(void) WriteBlobMSBShort(image,(unsigned short) image->columns);
(void) WriteBlobMSBShort(image,(unsigned short) image->rows);
(void) WriteBlobMSBShort(image,(unsigned short) x_resolution);
(void) WriteBlobMSBShort(image,0x0000);
(void) WriteBlobMSBShort(image,(unsigned short) y_resolution);
(void) WriteBlobMSBShort(image,0x0000);
(void) WriteBlobMSBLong(image,(unsigned int) length);
(void) WriteBlobMSBShort(image,0x0001);
(void) WriteBlobMSBLong(image,0x0B466F74U);
(void) WriteBlobMSBLong(image,0x6F202D20U);
(void) WriteBlobMSBLong(image,0x4A504547U);
(void) WriteBlobMSBLong(image,0x00000000U);
(void) WriteBlobMSBLong(image,0x00000000U);
(void) WriteBlobMSBLong(image,0x00000000U);
(void) WriteBlobMSBLong(image,0x00000000U);
(void) WriteBlobMSBLong(image,0x00000000U);
(void) WriteBlobMSBLong(image,0x0018FFFFU);
(void) WriteBlob(image,length,blob);
if ((length & 0x01) != 0)
(void) WriteBlobByte(image,'\0');
blob=(unsigned char *) RelinquishMagickMemory(blob);
}
/*
Write picture opcode, row bytes, and picture bounding box, and version.
*/
if (storage_class == PseudoClass)
(void) WriteBlobMSBShort(image,PictPICTOp);
else
{
(void) WriteBlobMSBShort(image,PictPixmapOp);
(void) WriteBlobMSBLong(image,(unsigned int) base_address);
}
(void) WriteBlobMSBShort(image,(unsigned short) (row_bytes | 0x8000));
(void) WriteBlobMSBShort(image,(unsigned short) bounds.top);
(void) WriteBlobMSBShort(image,(unsigned short) bounds.left);
(void) WriteBlobMSBShort(image,(unsigned short) bounds.bottom);
(void) WriteBlobMSBShort(image,(unsigned short) bounds.right);
/*
Write pack type, pack size, resolution, pixel type, and pixel size.
*/
(void) WriteBlobMSBShort(image,(unsigned short) pixmap.version);
(void) WriteBlobMSBShort(image,(unsigned short) pixmap.pack_type);
(void) WriteBlobMSBLong(image,(unsigned int) pixmap.pack_size);
(void) WriteBlobMSBShort(image,(unsigned short) (x_resolution+0.5));
(void) WriteBlobMSBShort(image,0x0000);
(void) WriteBlobMSBShort(image,(unsigned short) (y_resolution+0.5));
(void) WriteBlobMSBShort(image,0x0000);
(void) WriteBlobMSBShort(image,(unsigned short) pixmap.pixel_type);
(void) WriteBlobMSBShort(image,(unsigned short) pixmap.bits_per_pixel);
/*
Write component count, size, plane bytes, table size, and reserved.
*/
(void) WriteBlobMSBShort(image,(unsigned short) pixmap.component_count);
(void) WriteBlobMSBShort(image,(unsigned short) pixmap.component_size);
(void) WriteBlobMSBLong(image,(unsigned int) pixmap.plane_bytes);
(void) WriteBlobMSBLong(image,(unsigned int) pixmap.table);
(void) WriteBlobMSBLong(image,(unsigned int) pixmap.reserved);
if (storage_class == PseudoClass)
{
/*
Write image colormap.
*/
(void) WriteBlobMSBLong(image,0x00000000L); /* color seed */
(void) WriteBlobMSBShort(image,0L); /* color flags */
(void) WriteBlobMSBShort(image,(unsigned short) (image->colors-1));
for (i=0; i < (ssize_t) image->colors; i++)
{
(void) WriteBlobMSBShort(image,(unsigned short) i);
(void) WriteBlobMSBShort(image,ScaleQuantumToShort(
image->colormap[i].red));
(void) WriteBlobMSBShort(image,ScaleQuantumToShort(
image->colormap[i].green));
(void) WriteBlobMSBShort(image,ScaleQuantumToShort(
image->colormap[i].blue));
}
}
/*
Write source and destination rectangle.
*/
(void) WriteBlobMSBShort(image,(unsigned short) source_rectangle.top);
(void) WriteBlobMSBShort(image,(unsigned short) source_rectangle.left);
(void) WriteBlobMSBShort(image,(unsigned short) source_rectangle.bottom);
(void) WriteBlobMSBShort(image,(unsigned short) source_rectangle.right);
(void) WriteBlobMSBShort(image,(unsigned short) destination_rectangle.top);
(void) WriteBlobMSBShort(image,(unsigned short) destination_rectangle.left);
(void) WriteBlobMSBShort(image,(unsigned short) destination_rectangle.bottom);
(void) WriteBlobMSBShort(image,(unsigned short) destination_rectangle.right);
(void) WriteBlobMSBShort(image,(unsigned short) transfer_mode);
/*
Write picture data.
*/
count=0;
if (storage_class == PseudoClass)
for (y=0; y < (ssize_t) image->rows; y++)
{
p=GetVirtualPixels(image,0,y,image->columns,1,&image->exception);
if (p == (const PixelPacket *) NULL)
break;
indexes=GetVirtualIndexQueue(image);
for (x=0; x < (ssize_t) image->columns; x++)
scanline[x]=(unsigned char) ((size_t) GetPixelIndex(indexes+x));
count+=EncodeImage(image,scanline,(size_t) (row_bytes & 0x7FFF),
packed_scanline);
if (image->previous == (Image *) NULL)
{
status=SetImageProgress(image,SaveImageTag,(MagickOffsetType) y,
image->rows);
if (status == MagickFalse)
break;
}
}
else
if (image_info->compression == JPEGCompression)
{
(void) memset(scanline,0,row_bytes);
for (y=0; y < (ssize_t) image->rows; y++)
count+=EncodeImage(image,scanline,(size_t) (row_bytes & 0x7FFF),
packed_scanline);
}
else
{
unsigned char
*blue,
*green,
*opacity,
*red;
red=scanline;
green=scanline+image->columns;
blue=scanline+2*image->columns;
opacity=scanline+3*image->columns;
for (y=0; y < (ssize_t) image->rows; y++)
{
p=GetVirtualPixels(image,0,y,image->columns,1,&image->exception);
if (p == (const PixelPacket *) NULL)
break;
red=scanline;
green=scanline+image->columns;
blue=scanline+2*image->columns;
if (image->matte != MagickFalse)
{
opacity=scanline;
red=scanline+image->columns;
green=scanline+2*image->columns;
blue=scanline+3*image->columns;
}
for (x=0; x < (ssize_t) image->columns; x++)
{
*red++=ScaleQuantumToChar(GetPixelRed(p));
*green++=ScaleQuantumToChar(GetPixelGreen(p));
*blue++=ScaleQuantumToChar(GetPixelBlue(p));
if (image->matte != MagickFalse)
*opacity++=ScaleQuantumToChar((Quantum) (GetPixelAlpha(p)));
p++;
}
count+=EncodeImage(image,scanline,bytes_per_line,packed_scanline);
if (image->previous == (Image *) NULL)
{
status=SetImageProgress(image,SaveImageTag,(MagickOffsetType) y,
image->rows);
if (status == MagickFalse)
break;
}
}
}
if ((count & 0x01) != 0)
(void) WriteBlobByte(image,'\0');
(void) WriteBlobMSBShort(image,PictEndOfPictureOp);
offset=TellBlob(image);
offset=SeekBlob(image,512,SEEK_SET);
(void) WriteBlobMSBShort(image,(unsigned short) offset);
scanline=(unsigned char *) RelinquishMagickMemory(scanline);
packed_scanline=(unsigned char *) RelinquishMagickMemory(packed_scanline);
buffer=(unsigned char *) RelinquishMagickMemory(buffer);
(void) CloseBlob(image);
return(MagickTrue);
}