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/*
|
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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% %
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% %
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% %
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% RRRR L EEEEE %
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% R R L E %
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% RRRR L EEE %
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% R R L E %
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% R R LLLLL EEEEE %
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% %
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% %
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% Read URT RLE Image Format %
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% %
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|
% Software Design %
|
|
|
% Cristy %
|
|
|
% July 1992 %
|
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% %
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% %
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|
% Copyright 1999-2021 ImageMagick Studio LLC, a non-profit organization %
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% dedicated to making software imaging solutions freely available. %
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% %
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% You may not use this file except in compliance with the License. You may %
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|
% obtain a copy of the License at %
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% %
|
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|
% https://imagemagick.org/script/license.php %
|
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% %
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|
|
% Unless required by applicable law or agreed to in writing, software %
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% distributed under the License is distributed on an "AS IS" BASIS, %
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|
% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. %
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% See the License for the specific language governing permissions and %
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% limitations under the License. %
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% %
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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%
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%
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*/
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/*
|
|
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Include declarations.
|
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|
*/
|
|
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#include "MagickCore/studio.h"
|
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|
#include "MagickCore/blob.h"
|
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|
#include "MagickCore/blob-private.h"
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#include "MagickCore/cache.h"
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|
#include "MagickCore/colormap.h"
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|
|
#include "MagickCore/colormap-private.h"
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|
#include "MagickCore/exception.h"
|
|
|
#include "MagickCore/exception-private.h"
|
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|
#include "MagickCore/image.h"
|
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|
#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/pixel.h"
|
|
|
#include "MagickCore/property.h"
|
|
|
#include "MagickCore/quantum-private.h"
|
|
|
#include "MagickCore/static.h"
|
|
|
#include "MagickCore/string_.h"
|
|
|
#include "MagickCore/module.h"
|
|
|
|
|
|
/*
|
|
|
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
|
|
% %
|
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|
% %
|
|
|
% %
|
|
|
% I s R L E %
|
|
|
% %
|
|
|
% %
|
|
|
% %
|
|
|
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
|
|
%
|
|
|
% IsRLE() returns MagickTrue if the image format type, identified by the
|
|
|
% magick string, is RLE.
|
|
|
%
|
|
|
% The format of the ReadRLEImage method is:
|
|
|
%
|
|
|
% MagickBooleanType IsRLE(const unsigned char *magick,const size_t length)
|
|
|
%
|
|
|
% A description of each parameter follows:
|
|
|
%
|
|
|
% o magick: compare image format pattern against these bytes.
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|
%
|
|
|
% o length: Specifies the length of the magick string.
|
|
|
%
|
|
|
%
|
|
|
*/
|
|
|
static MagickBooleanType IsRLE(const unsigned char *magick,const size_t length)
|
|
|
{
|
|
|
if (length < 2)
|
|
|
return(MagickFalse);
|
|
|
if (memcmp(magick,"\122\314",2) == 0)
|
|
|
return(MagickTrue);
|
|
|
return(MagickFalse);
|
|
|
}
|
|
|
|
|
|
/*
|
|
|
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
|
|
% %
|
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|
% %
|
|
|
% %
|
|
|
% R e a d R L E I m a g e %
|
|
|
% %
|
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|
% %
|
|
|
% %
|
|
|
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
|
|
%
|
|
|
% ReadRLEImage() reads a run-length encoded Utah Raster Toolkit
|
|
|
% 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 ReadRLEImage method is:
|
|
|
%
|
|
|
% Image *ReadRLEImage(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 *ReadRLEImage(const ImageInfo *image_info,ExceptionInfo *exception)
|
|
|
{
|
|
|
#define SkipLinesOp 0x01
|
|
|
#define SetColorOp 0x02
|
|
|
#define SkipPixelsOp 0x03
|
|
|
#define ByteDataOp 0x05
|
|
|
#define RunDataOp 0x06
|
|
|
#define EOFOp 0x07
|
|
|
#define ThrowRLEException(exception,message) \
|
|
|
{ \
|
|
|
if (colormap != (unsigned char *) NULL) \
|
|
|
colormap=(unsigned char *) RelinquishMagickMemory(colormap); \
|
|
|
if (pixel_info != (MemoryInfo *) NULL) \
|
|
|
pixel_info=RelinquishVirtualMemory(pixel_info); \
|
|
|
ThrowReaderException((exception),(message)); \
|
|
|
}
|
|
|
|
|
|
char
|
|
|
magick[12];
|
|
|
|
|
|
Image
|
|
|
*image;
|
|
|
|
|
|
int
|
|
|
opcode,
|
|
|
operand,
|
|
|
status;
|
|
|
|
|
|
MagickStatusType
|
|
|
flags;
|
|
|
|
|
|
MagickSizeType
|
|
|
number_pixels;
|
|
|
|
|
|
MemoryInfo
|
|
|
*pixel_info;
|
|
|
|
|
|
Quantum
|
|
|
index;
|
|
|
|
|
|
ssize_t
|
|
|
x;
|
|
|
|
|
|
Quantum
|
|
|
*q;
|
|
|
|
|
|
ssize_t
|
|
|
i;
|
|
|
|
|
|
unsigned char
|
|
|
*p;
|
|
|
|
|
|
size_t
|
|
|
bits_per_pixel,
|
|
|
map_length,
|
|
|
number_colormaps,
|
|
|
number_planes,
|
|
|
number_planes_filled,
|
|
|
one,
|
|
|
pixel_info_length;
|
|
|
|
|
|
ssize_t
|
|
|
count,
|
|
|
offset,
|
|
|
y;
|
|
|
|
|
|
unsigned char
|
|
|
background_color[256],
|
|
|
*colormap,
|
|
|
pixel,
|
|
|
plane,
|
|
|
*pixels;
|
|
|
|
|
|
/*
|
|
|
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)
|
|
|
return(DestroyImageList(image));
|
|
|
/*
|
|
|
Determine if this a RLE file.
|
|
|
*/
|
|
|
colormap=(unsigned char *) NULL;
|
|
|
pixel_info=(MemoryInfo *) NULL;
|
|
|
count=ReadBlob(image,2,(unsigned char *) magick);
|
|
|
if ((count != 2) || (memcmp(magick,"\122\314",2) != 0))
|
|
|
ThrowRLEException(CorruptImageError,"ImproperImageHeader");
|
|
|
do
|
|
|
{
|
|
|
/*
|
|
|
Read image header.
|
|
|
*/
|
|
|
image->page.x=(ssize_t) ReadBlobLSBShort(image);
|
|
|
image->page.y=(ssize_t) ReadBlobLSBShort(image);
|
|
|
image->columns=ReadBlobLSBShort(image);
|
|
|
image->rows=ReadBlobLSBShort(image);
|
|
|
flags=(MagickStatusType) ReadBlobByte(image);
|
|
|
image->alpha_trait=flags & 0x04 ? BlendPixelTrait : UndefinedPixelTrait;
|
|
|
number_planes=(size_t) ReadBlobByte(image);
|
|
|
bits_per_pixel=(size_t) ReadBlobByte(image);
|
|
|
number_colormaps=(size_t) ReadBlobByte(image);
|
|
|
map_length=(unsigned char) ReadBlobByte(image);
|
|
|
if (map_length >= 22)
|
|
|
ThrowRLEException(CorruptImageError,"ImproperImageHeader");
|
|
|
if (EOFBlob(image) != MagickFalse)
|
|
|
ThrowRLEException(CorruptImageError,"UnexpectedEndOfFile");
|
|
|
one=1;
|
|
|
map_length=one << map_length;
|
|
|
if ((number_planes == 0) || (number_planes == 2) || ((flags & 0x04) &&
|
|
|
((number_planes <= 2) || number_planes > 254)) || (bits_per_pixel != 8))
|
|
|
ThrowRLEException(CorruptImageError,"ImproperImageHeader");
|
|
|
if (number_planes > 4)
|
|
|
ThrowRLEException(CorruptImageError,"ImproperImageHeader");
|
|
|
if ((image->columns == 0) || (image->columns >= 32768) ||
|
|
|
(image->rows == 0) || (image->rows >= 32768))
|
|
|
ThrowRLEException(CorruptImageError,"ImproperImageHeader");
|
|
|
if (flags & 0x02)
|
|
|
{
|
|
|
/*
|
|
|
No background color-- initialize to black.
|
|
|
*/
|
|
|
for (i=0; i < (ssize_t) number_planes; i++)
|
|
|
background_color[i]=0;
|
|
|
(void) ReadBlobByte(image);
|
|
|
}
|
|
|
else
|
|
|
{
|
|
|
/*
|
|
|
Initialize background color.
|
|
|
*/
|
|
|
p=background_color;
|
|
|
for (i=0; i < (ssize_t) number_planes; i++)
|
|
|
*p++=(unsigned char) ReadBlobByte(image);
|
|
|
}
|
|
|
if ((number_planes & 0x01) == 0)
|
|
|
(void) ReadBlobByte(image);
|
|
|
if (EOFBlob(image) != MagickFalse)
|
|
|
ThrowRLEException(CorruptImageError,"UnexpectedEndOfFile");
|
|
|
if (image->alpha_trait != UndefinedPixelTrait)
|
|
|
number_planes++;
|
|
|
number_pixels=(MagickSizeType) image->columns*image->rows;
|
|
|
if ((GetBlobSize(image) == 0) || ((((MagickSizeType) number_pixels*
|
|
|
number_planes*bits_per_pixel/8)/GetBlobSize(image)) > 254))
|
|
|
ThrowRLEException(CorruptImageError,"InsufficientImageDataInFile")
|
|
|
if (((MagickSizeType) number_colormaps*map_length) > GetBlobSize(image))
|
|
|
ThrowRLEException(CorruptImageError,"InsufficientImageDataInFile")
|
|
|
if (number_colormaps != 0)
|
|
|
{
|
|
|
/*
|
|
|
Read image colormaps.
|
|
|
*/
|
|
|
colormap=(unsigned char *) AcquireQuantumMemory(number_colormaps,
|
|
|
3*map_length*sizeof(*colormap));
|
|
|
if (colormap == (unsigned char *) NULL)
|
|
|
ThrowRLEException(ResourceLimitError,"MemoryAllocationFailed");
|
|
|
(void) memset(colormap,0,number_colormaps*3*map_length*
|
|
|
sizeof(*colormap));
|
|
|
p=colormap;
|
|
|
for (i=0; i < (ssize_t) number_colormaps; i++)
|
|
|
for (x=0; x < (ssize_t) map_length; x++)
|
|
|
{
|
|
|
*p++=(unsigned char) ScaleQuantumToChar(ScaleShortToQuantum(
|
|
|
ReadBlobLSBShort(image)));
|
|
|
if (EOFBlob(image) != MagickFalse)
|
|
|
ThrowRLEException(CorruptImageError,"UnexpectedEndOfFile");
|
|
|
}
|
|
|
}
|
|
|
if ((flags & 0x08) != 0)
|
|
|
{
|
|
|
char
|
|
|
*comment;
|
|
|
|
|
|
size_t
|
|
|
length;
|
|
|
|
|
|
/*
|
|
|
Read image comment.
|
|
|
*/
|
|
|
length=ReadBlobLSBShort(image);
|
|
|
if (length != 0)
|
|
|
{
|
|
|
comment=(char *) AcquireQuantumMemory(length,sizeof(*comment));
|
|
|
if (comment == (char *) NULL)
|
|
|
ThrowRLEException(ResourceLimitError,"MemoryAllocationFailed");
|
|
|
count=ReadBlob(image,length-1,(unsigned char *) comment);
|
|
|
if (count != (ssize_t) (length-1))
|
|
|
{
|
|
|
comment=DestroyString(comment);
|
|
|
ThrowRLEException(CorruptImageError,"UnexpectedEndOfFile");
|
|
|
}
|
|
|
comment[length-1]='\0';
|
|
|
(void) SetImageProperty(image,"comment",comment,exception);
|
|
|
comment=DestroyString(comment);
|
|
|
if ((length & 0x01) == 0)
|
|
|
(void) ReadBlobByte(image);
|
|
|
}
|
|
|
}
|
|
|
if (EOFBlob(image) != MagickFalse)
|
|
|
ThrowRLEException(CorruptImageError,"UnexpectedEndOfFile");
|
|
|
if ((image_info->ping != MagickFalse) && (image_info->number_scenes != 0))
|
|
|
if (image->scene >= (image_info->scene+image_info->number_scenes-1))
|
|
|
break;
|
|
|
status=SetImageExtent(image,image->columns,image->rows,exception);
|
|
|
if (status == MagickFalse)
|
|
|
{
|
|
|
if (colormap != (unsigned char *) NULL)
|
|
|
colormap=(unsigned char *) RelinquishMagickMemory(colormap);
|
|
|
if (pixel_info != (MemoryInfo *) NULL)
|
|
|
pixel_info=RelinquishVirtualMemory(pixel_info);
|
|
|
return(DestroyImageList(image));
|
|
|
}
|
|
|
/*
|
|
|
Allocate RLE pixels.
|
|
|
*/
|
|
|
number_planes_filled=(number_planes % 2 == 0) ? number_planes :
|
|
|
number_planes+1;
|
|
|
if ((number_pixels*number_planes_filled) != (size_t) (number_pixels*
|
|
|
number_planes_filled))
|
|
|
ThrowRLEException(ResourceLimitError,"MemoryAllocationFailed");
|
|
|
pixel_info=AcquireVirtualMemory(image->columns,image->rows*
|
|
|
MagickMax(number_planes_filled,4)*sizeof(*pixels));
|
|
|
if (pixel_info == (MemoryInfo *) NULL)
|
|
|
ThrowRLEException(ResourceLimitError,"MemoryAllocationFailed");
|
|
|
pixel_info_length=image->columns*image->rows*
|
|
|
MagickMax(number_planes_filled,4);
|
|
|
pixels=(unsigned char *) GetVirtualMemoryBlob(pixel_info);
|
|
|
(void) memset(pixels,0,pixel_info_length);
|
|
|
if ((flags & 0x01) && !(flags & 0x02))
|
|
|
{
|
|
|
ssize_t
|
|
|
j;
|
|
|
|
|
|
/*
|
|
|
Set background color.
|
|
|
*/
|
|
|
p=pixels;
|
|
|
for (i=0; i < (ssize_t) number_pixels; i++)
|
|
|
{
|
|
|
if (image->alpha_trait == UndefinedPixelTrait)
|
|
|
for (j=0; j < (ssize_t) number_planes; j++)
|
|
|
*p++=background_color[j];
|
|
|
else
|
|
|
{
|
|
|
for (j=0; j < (ssize_t) (number_planes-1); j++)
|
|
|
*p++=background_color[j];
|
|
|
*p++=0; /* initialize matte channel */
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
/*
|
|
|
Read runlength-encoded image.
|
|
|
*/
|
|
|
plane=0;
|
|
|
x=0;
|
|
|
y=0;
|
|
|
opcode=ReadBlobByte(image);
|
|
|
if (opcode == EOF)
|
|
|
{
|
|
|
if (number_colormaps != 0)
|
|
|
colormap=(unsigned char *) RelinquishMagickMemory(colormap);
|
|
|
ThrowRLEException(CorruptImageError,"UnexpectedEndOfFile");
|
|
|
}
|
|
|
do
|
|
|
{
|
|
|
switch (opcode & 0x3f)
|
|
|
{
|
|
|
case SkipLinesOp:
|
|
|
{
|
|
|
operand=ReadBlobByte(image);
|
|
|
if (operand == EOF)
|
|
|
ThrowRLEException(CorruptImageError,"UnexpectedEndOfFile");
|
|
|
if (opcode & 0x40)
|
|
|
{
|
|
|
operand=ReadBlobLSBSignedShort(image);
|
|
|
if (operand == EOF)
|
|
|
ThrowRLEException(CorruptImageError,"UnexpectedEndOfFile");
|
|
|
}
|
|
|
x=0;
|
|
|
y+=operand;
|
|
|
break;
|
|
|
}
|
|
|
case SetColorOp:
|
|
|
{
|
|
|
operand=ReadBlobByte(image);
|
|
|
if (operand == EOF)
|
|
|
ThrowRLEException(CorruptImageError,"UnexpectedEndOfFile");
|
|
|
plane=(unsigned char) operand;
|
|
|
if (plane == 255)
|
|
|
plane=(unsigned char) (number_planes-1);
|
|
|
x=0;
|
|
|
break;
|
|
|
}
|
|
|
case SkipPixelsOp:
|
|
|
{
|
|
|
operand=ReadBlobByte(image);
|
|
|
if (operand == EOF)
|
|
|
ThrowRLEException(CorruptImageError,"UnexpectedEndOfFile");
|
|
|
if (opcode & 0x40)
|
|
|
{
|
|
|
operand=ReadBlobLSBSignedShort(image);
|
|
|
if (operand == EOF)
|
|
|
ThrowRLEException(CorruptImageError,"UnexpectedEndOfFile");
|
|
|
}
|
|
|
x+=operand;
|
|
|
break;
|
|
|
}
|
|
|
case ByteDataOp:
|
|
|
{
|
|
|
operand=ReadBlobByte(image);
|
|
|
if (operand == EOF)
|
|
|
ThrowRLEException(CorruptImageError,"UnexpectedEndOfFile");
|
|
|
if (opcode & 0x40)
|
|
|
{
|
|
|
operand=ReadBlobLSBSignedShort(image);
|
|
|
if (operand == EOF)
|
|
|
ThrowRLEException(CorruptImageError,"UnexpectedEndOfFile");
|
|
|
}
|
|
|
offset=(ssize_t) (((image->rows-y-1)*image->columns*number_planes)+x*
|
|
|
number_planes+plane);
|
|
|
operand++;
|
|
|
if ((offset < 0) ||
|
|
|
((size_t) (offset+operand*number_planes) > pixel_info_length))
|
|
|
ThrowRLEException(CorruptImageError,"UnableToReadImageData");
|
|
|
p=pixels+offset;
|
|
|
for (i=0; i < (ssize_t) operand; i++)
|
|
|
{
|
|
|
pixel=(unsigned char) ReadBlobByte(image);
|
|
|
if ((y < (ssize_t) image->rows) &&
|
|
|
((x+i) < (ssize_t) image->columns))
|
|
|
*p=pixel;
|
|
|
p+=number_planes;
|
|
|
}
|
|
|
if (operand & 0x01)
|
|
|
(void) ReadBlobByte(image);
|
|
|
x+=operand;
|
|
|
break;
|
|
|
}
|
|
|
case RunDataOp:
|
|
|
{
|
|
|
operand=ReadBlobByte(image);
|
|
|
if (operand == EOF)
|
|
|
ThrowRLEException(CorruptImageError,"UnexpectedEndOfFile");
|
|
|
if (opcode & 0x40)
|
|
|
{
|
|
|
operand=ReadBlobLSBSignedShort(image);
|
|
|
if (operand == EOF)
|
|
|
ThrowRLEException(CorruptImageError,"UnexpectedEndOfFile");
|
|
|
}
|
|
|
pixel=(unsigned char) ReadBlobByte(image);
|
|
|
(void) ReadBlobByte(image);
|
|
|
offset=(ssize_t) (((image->rows-y-1)*image->columns*number_planes)+x*
|
|
|
number_planes+plane);
|
|
|
operand++;
|
|
|
if ((offset < 0) ||
|
|
|
((size_t) (offset+operand*number_planes) > pixel_info_length))
|
|
|
ThrowRLEException(CorruptImageError,"UnableToReadImageData");
|
|
|
p=pixels+offset;
|
|
|
for (i=0; i < (ssize_t) operand; i++)
|
|
|
{
|
|
|
if ((y < (ssize_t) image->rows) &&
|
|
|
((x+i) < (ssize_t) image->columns))
|
|
|
*p=pixel;
|
|
|
p+=number_planes;
|
|
|
}
|
|
|
x+=operand;
|
|
|
break;
|
|
|
}
|
|
|
default:
|
|
|
break;
|
|
|
}
|
|
|
opcode=ReadBlobByte(image);
|
|
|
if (opcode == EOF)
|
|
|
ThrowRLEException(CorruptImageError,"UnexpectedEndOfFile");
|
|
|
} while (((opcode & 0x3f) != EOFOp) && (opcode != EOF));
|
|
|
if (number_colormaps != 0)
|
|
|
{
|
|
|
MagickStatusType
|
|
|
mask;
|
|
|
|
|
|
/*
|
|
|
Apply colormap affineation to image.
|
|
|
*/
|
|
|
mask=(MagickStatusType) (map_length-1);
|
|
|
p=pixels;
|
|
|
x=(ssize_t) number_planes;
|
|
|
if (number_colormaps == 1)
|
|
|
for (i=0; i < (ssize_t) number_pixels; i++)
|
|
|
{
|
|
|
ValidateColormapValue(image,(ssize_t) (*p & mask),&index,exception);
|
|
|
*p=colormap[(ssize_t) index];
|
|
|
p++;
|
|
|
}
|
|
|
else
|
|
|
if ((number_planes >= 3) && (number_colormaps >= 3))
|
|
|
for (i=0; i < (ssize_t) number_pixels; i++)
|
|
|
for (x=0; x < (ssize_t) number_planes; x++)
|
|
|
{
|
|
|
ValidateColormapValue(image,(ssize_t) (x*map_length+
|
|
|
(*p & mask)),&index,exception);
|
|
|
*p=colormap[(ssize_t) index];
|
|
|
p++;
|
|
|
}
|
|
|
if ((i < (ssize_t) number_pixels) || (x < (ssize_t) number_planes))
|
|
|
ThrowRLEException(CorruptImageError,"UnableToReadImageData");
|
|
|
}
|
|
|
/*
|
|
|
Initialize image structure.
|
|
|
*/
|
|
|
if (number_planes >= 3)
|
|
|
{
|
|
|
/*
|
|
|
Convert raster image to DirectClass pixel packets.
|
|
|
*/
|
|
|
p=pixels;
|
|
|
for (y=0; y < (ssize_t) image->rows; y++)
|
|
|
{
|
|
|
q=QueueAuthenticPixels(image,0,y,image->columns,1,exception);
|
|
|
if (q == (Quantum *) NULL)
|
|
|
break;
|
|
|
for (x=0; x < (ssize_t) image->columns; x++)
|
|
|
{
|
|
|
SetPixelRed(image,ScaleCharToQuantum(*p++),q);
|
|
|
SetPixelGreen(image,ScaleCharToQuantum(*p++),q);
|
|
|
SetPixelBlue(image,ScaleCharToQuantum(*p++),q);
|
|
|
if (image->alpha_trait != UndefinedPixelTrait)
|
|
|
SetPixelAlpha(image,ScaleCharToQuantum(*p++),q);
|
|
|
q+=GetPixelChannels(image);
|
|
|
}
|
|
|
if (SyncAuthenticPixels(image,exception) == MagickFalse)
|
|
|
break;
|
|
|
if (image->previous == (Image *) NULL)
|
|
|
{
|
|
|
status=SetImageProgress(image,LoadImageTag,(MagickOffsetType) y,
|
|
|
image->rows);
|
|
|
if (status == MagickFalse)
|
|
|
break;
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
else
|
|
|
{
|
|
|
/*
|
|
|
Create colormap.
|
|
|
*/
|
|
|
if (number_colormaps == 0)
|
|
|
map_length=256;
|
|
|
if (AcquireImageColormap(image,map_length,exception) == MagickFalse)
|
|
|
ThrowRLEException(ResourceLimitError,"MemoryAllocationFailed");
|
|
|
p=colormap;
|
|
|
if (number_colormaps == 1)
|
|
|
for (i=0; i < (ssize_t) image->colors; i++)
|
|
|
{
|
|
|
/*
|
|
|
Pseudocolor.
|
|
|
*/
|
|
|
image->colormap[i].red=(MagickRealType)
|
|
|
ScaleCharToQuantum((unsigned char) i);
|
|
|
image->colormap[i].green=(MagickRealType)
|
|
|
ScaleCharToQuantum((unsigned char) i);
|
|
|
image->colormap[i].blue=(MagickRealType)
|
|
|
ScaleCharToQuantum((unsigned char) i);
|
|
|
}
|
|
|
else
|
|
|
if (number_colormaps > 1)
|
|
|
for (i=0; i < (ssize_t) image->colors; i++)
|
|
|
{
|
|
|
image->colormap[i].red=(MagickRealType)
|
|
|
ScaleCharToQuantum(*p);
|
|
|
image->colormap[i].green=(MagickRealType)
|
|
|
ScaleCharToQuantum(*(p+map_length));
|
|
|
image->colormap[i].blue=(MagickRealType)
|
|
|
ScaleCharToQuantum(*(p+map_length*2));
|
|
|
p++;
|
|
|
}
|
|
|
p=pixels;
|
|
|
if (image->alpha_trait == UndefinedPixelTrait)
|
|
|
{
|
|
|
/*
|
|
|
Convert raster image to PseudoClass pixel packets.
|
|
|
*/
|
|
|
for (y=0; y < (ssize_t) image->rows; y++)
|
|
|
{
|
|
|
q=QueueAuthenticPixels(image,0,y,image->columns,1,exception);
|
|
|
if (q == (Quantum *) NULL)
|
|
|
break;
|
|
|
for (x=0; x < (ssize_t) image->columns; x++)
|
|
|
{
|
|
|
SetPixelIndex(image,(Quantum) *p++,q);
|
|
|
q+=GetPixelChannels(image);
|
|
|
}
|
|
|
if (SyncAuthenticPixels(image,exception) == MagickFalse)
|
|
|
break;
|
|
|
if (image->previous == (Image *) NULL)
|
|
|
{
|
|
|
status=SetImageProgress(image,LoadImageTag,(MagickOffsetType)
|
|
|
y,image->rows);
|
|
|
if (status == MagickFalse)
|
|
|
break;
|
|
|
}
|
|
|
}
|
|
|
(void) SyncImage(image,exception);
|
|
|
}
|
|
|
else
|
|
|
{
|
|
|
/*
|
|
|
Image has a matte channel-- promote to DirectClass.
|
|
|
*/
|
|
|
for (y=0; y < (ssize_t) image->rows; y++)
|
|
|
{
|
|
|
q=QueueAuthenticPixels(image,0,y,image->columns,1,exception);
|
|
|
if (q == (Quantum *) NULL)
|
|
|
break;
|
|
|
for (x=0; x < (ssize_t) image->columns; x++)
|
|
|
{
|
|
|
ValidateColormapValue(image,(ssize_t) *p++,&index,exception);
|
|
|
SetPixelRed(image,ClampToQuantum(image->colormap[(ssize_t)
|
|
|
index].red),q);
|
|
|
ValidateColormapValue(image,(ssize_t) *p++,&index,exception);
|
|
|
SetPixelGreen(image,ClampToQuantum(image->colormap[(ssize_t)
|
|
|
index].green),q);
|
|
|
ValidateColormapValue(image,(ssize_t) *p++,&index,exception);
|
|
|
SetPixelBlue(image,ClampToQuantum(image->colormap[(ssize_t)
|
|
|
index].blue),q);
|
|
|
SetPixelAlpha(image,ScaleCharToQuantum(*p++),q);
|
|
|
q+=GetPixelChannels(image);
|
|
|
}
|
|
|
if (x < (ssize_t) image->columns)
|
|
|
break;
|
|
|
if (SyncAuthenticPixels(image,exception) == MagickFalse)
|
|
|
break;
|
|
|
if (image->previous == (Image *) NULL)
|
|
|
{
|
|
|
status=SetImageProgress(image,LoadImageTag,(MagickOffsetType)
|
|
|
y,image->rows);
|
|
|
if (status == MagickFalse)
|
|
|
break;
|
|
|
}
|
|
|
}
|
|
|
image->colormap=(PixelInfo *) RelinquishMagickMemory(
|
|
|
image->colormap);
|
|
|
image->storage_class=DirectClass;
|
|
|
image->colors=0;
|
|
|
}
|
|
|
}
|
|
|
if (number_colormaps != 0)
|
|
|
colormap=(unsigned char *) RelinquishMagickMemory(colormap);
|
|
|
pixel_info=RelinquishVirtualMemory(pixel_info);
|
|
|
if (EOFBlob(image) != MagickFalse)
|
|
|
{
|
|
|
ThrowFileException(exception,CorruptImageError,"UnexpectedEndOfFile",
|
|
|
image->filename);
|
|
|
break;
|
|
|
}
|
|
|
/*
|
|
|
Proceed to next image.
|
|
|
*/
|
|
|
if (image_info->number_scenes != 0)
|
|
|
if (image->scene >= (image_info->scene+image_info->number_scenes-1))
|
|
|
break;
|
|
|
(void) ReadBlobByte(image);
|
|
|
count=ReadBlob(image,2,(unsigned char *) magick);
|
|
|
if ((count != 0) && (memcmp(magick,"\122\314",2) == 0))
|
|
|
{
|
|
|
/*
|
|
|
Allocate next image structure.
|
|
|
*/
|
|
|
AcquireNextImage(image_info,image,exception);
|
|
|
if (GetNextImageInList(image) == (Image *) NULL)
|
|
|
{
|
|
|
status=MagickFalse;
|
|
|
break;
|
|
|
}
|
|
|
image=SyncNextImageInList(image);
|
|
|
status=SetImageProgress(image,LoadImagesTag,TellBlob(image),
|
|
|
GetBlobSize(image));
|
|
|
if (status == MagickFalse)
|
|
|
break;
|
|
|
}
|
|
|
} while ((count != 0) && (memcmp(magick,"\122\314",2) == 0));
|
|
|
(void) CloseBlob(image);
|
|
|
if (status == MagickFalse)
|
|
|
return(DestroyImageList(image));
|
|
|
return(GetFirstImageInList(image));
|
|
|
}
|
|
|
|
|
|
/*
|
|
|
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
|
|
% %
|
|
|
% %
|
|
|
% %
|
|
|
% R e g i s t e r R L E I m a g e %
|
|
|
% %
|
|
|
% %
|
|
|
% %
|
|
|
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
|
|
%
|
|
|
% RegisterRLEImage() adds attributes for the RLE 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 RegisterRLEImage method is:
|
|
|
%
|
|
|
% size_t RegisterRLEImage(void)
|
|
|
%
|
|
|
*/
|
|
|
ModuleExport size_t RegisterRLEImage(void)
|
|
|
{
|
|
|
MagickInfo
|
|
|
*entry;
|
|
|
|
|
|
entry=AcquireMagickInfo("RLE","RLE","Utah Run length encoded image");
|
|
|
entry->decoder=(DecodeImageHandler *) ReadRLEImage;
|
|
|
entry->magick=(IsImageFormatHandler *) IsRLE;
|
|
|
entry->flags|=CoderDecoderSeekableStreamFlag;
|
|
|
entry->flags^=CoderAdjoinFlag;
|
|
|
(void) RegisterMagickInfo(entry);
|
|
|
return(MagickImageCoderSignature);
|
|
|
}
|
|
|
|
|
|
/*
|
|
|
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
|
|
% %
|
|
|
% %
|
|
|
% %
|
|
|
% U n r e g i s t e r R L E I m a g e %
|
|
|
% %
|
|
|
% %
|
|
|
% %
|
|
|
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
|
|
%
|
|
|
% UnregisterRLEImage() removes format registrations made by the
|
|
|
% RLE module from the list of supported formats.
|
|
|
%
|
|
|
% The format of the UnregisterRLEImage method is:
|
|
|
%
|
|
|
% UnregisterRLEImage(void)
|
|
|
%
|
|
|
*/
|
|
|
ModuleExport void UnregisterRLEImage(void)
|
|
|
{
|
|
|
(void) UnregisterMagickInfo("RLE");
|
|
|
}
|
