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rgb.c
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rgb.c
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/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% RRRR GGGG BBBB %
% R R G B B %
% RRRR G GG BBBB %
% R R G G B B %
% R R GGG BBBB %
% %
% %
% Read/Write Raw RGB Image Format %
% %
% Software Design %
% Cristy %
% July 1992 %
% %
% %
% Copyright 1999-2019 ImageMagick Studio LLC, a non-profit organization %
% dedicated to making software imaging solutions freely available. %
% %
% You may not use this file except in compliance with the License. You may %
% obtain a copy of the License at %
% %
% https://imagemagick.org/script/license.php %
% %
% Unless required by applicable law or agreed to in writing, software %
% distributed under the License is distributed on an "AS IS" BASIS, %
% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. %
% See the License for the specific language governing permissions and %
% limitations under the License. %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%
*/
/*
Include declarations.
*/
#include "MagickCore/studio.h"
#include "MagickCore/blob.h"
#include "MagickCore/blob-private.h"
#include "MagickCore/cache.h"
#include "MagickCore/channel.h"
#include "MagickCore/colorspace.h"
#include "MagickCore/colorspace-private.h"
#include "MagickCore/constitute.h"
#include "MagickCore/exception.h"
#include "MagickCore/exception-private.h"
#include "MagickCore/image.h"
#include "MagickCore/image-private.h"
#include "MagickCore/list.h"
#include "MagickCore/magick.h"
#include "MagickCore/memory_.h"
#include "MagickCore/monitor.h"
#include "MagickCore/monitor-private.h"
#include "MagickCore/pixel-accessor.h"
#include "MagickCore/quantum-private.h"
#include "MagickCore/static.h"
#include "MagickCore/statistic.h"
#include "MagickCore/string_.h"
#include "MagickCore/module.h"
#include "MagickCore/utility.h"
/*
Forward declarations.
*/
static MagickBooleanType
WriteRGBImage(const ImageInfo *,Image *,ExceptionInfo *);
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% R e a d R G B I m a g e %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% ReadRGBImage() reads an image of raw RGB, RGBA, or RGBO samples 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 ReadRGBImage method is:
%
% Image *ReadRGBImage(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 *ReadRGBImage(const ImageInfo *image_info,ExceptionInfo *exception)
{
const unsigned char
*pixels;
Image
*canvas_image,
*image;
MagickBooleanType
status;
MagickOffsetType
scene;
QuantumInfo
*quantum_info;
QuantumType
quantum_type;
register ssize_t
i;
size_t
length;
ssize_t
count,
y;
/*
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);
if ((image->columns == 0) || (image->rows == 0))
ThrowReaderException(OptionError,"MustSpecifyImageSize");
if (image_info->interlace != PartitionInterlace)
{
status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception);
if (status == MagickFalse)
{
image=DestroyImageList(image);
return((Image *) NULL);
}
if (DiscardBlobBytes(image,(MagickSizeType) image->offset) == MagickFalse)
ThrowFileException(exception,CorruptImageError,"UnexpectedEndOfFile",
image->filename);
}
/*
Create virtual canvas to support cropping (i.e. image.rgb[100x100+10+20]).
*/
canvas_image=CloneImage(image,image->extract_info.width,1,MagickFalse,
exception);
if(canvas_image == (Image *) NULL)
ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
(void) SetImageVirtualPixelMethod(canvas_image,BlackVirtualPixelMethod,
exception);
quantum_info=AcquireQuantumInfo(image_info,canvas_image);
if (quantum_info == (QuantumInfo *) NULL)
{
canvas_image=DestroyImage(canvas_image);
ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
}
quantum_type=RGBQuantum;
if (LocaleCompare(image_info->magick,"RGBA") == 0)
{
quantum_type=RGBAQuantum;
image->alpha_trait=BlendPixelTrait;
canvas_image->alpha_trait=BlendPixelTrait;
}
if (LocaleCompare(image_info->magick,"RGBO") == 0)
{
quantum_type=RGBOQuantum;
image->alpha_trait=BlendPixelTrait;
canvas_image->alpha_trait=BlendPixelTrait;
}
pixels=(const unsigned char *) NULL;
if (image_info->number_scenes != 0)
while (image->scene < image_info->scene)
{
/*
Skip to next image.
*/
image->scene++;
length=GetQuantumExtent(canvas_image,quantum_info,quantum_type);
for (y=0; y < (ssize_t) image->rows; y++)
{
pixels=(const unsigned char *) ReadBlobStream(image,length,
GetQuantumPixels(quantum_info),&count);
if (count != (ssize_t) length)
break;
}
}
count=0;
length=0;
scene=0;
status=MagickTrue;
do
{
/*
Read pixels to virtual canvas image then push to image.
*/
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)
break;
switch (image_info->interlace)
{
case NoInterlace:
default:
{
/*
No interlacing: RGBRGBRGBRGBRGBRGB...
*/
if (scene == 0)
{
length=GetQuantumExtent(canvas_image,quantum_info,quantum_type);
pixels=(const unsigned char *) ReadBlobStream(image,length,
GetQuantumPixels(quantum_info),&count);
}
for (y=0; y < (ssize_t) image->extract_info.height; y++)
{
register const Quantum
*magick_restrict p;
register Quantum
*magick_restrict q;
register ssize_t
x;
if (count != (ssize_t) length)
{
status=MagickFalse;
ThrowFileException(exception,CorruptImageError,
"UnexpectedEndOfFile",image->filename);
break;
}
q=GetAuthenticPixels(canvas_image,0,0,canvas_image->columns,1,
exception);
if (q == (Quantum *) NULL)
break;
length=ImportQuantumPixels(canvas_image,(CacheView *) NULL,
quantum_info,quantum_type,pixels,exception);
if (SyncAuthenticPixels(canvas_image,exception) == MagickFalse)
break;
if (((y-image->extract_info.y) >= 0) &&
((y-image->extract_info.y) < (ssize_t) image->rows))
{
p=GetVirtualPixels(canvas_image,canvas_image->extract_info.x,0,
canvas_image->columns,1,exception);
q=QueueAuthenticPixels(image,0,y-image->extract_info.y,
image->columns,1,exception);
if ((p == (const Quantum *) NULL) || (q == (Quantum *) NULL))
break;
for (x=0; x < (ssize_t) image->columns; x++)
{
SetPixelRed(image,GetPixelRed(canvas_image,p),q);
SetPixelGreen(image,GetPixelGreen(canvas_image,p),q);
SetPixelBlue(image,GetPixelBlue(canvas_image,p),q);
SetPixelAlpha(image,OpaqueAlpha,q);
if (image->alpha_trait != UndefinedPixelTrait)
SetPixelAlpha(image,GetPixelAlpha(canvas_image,p),q);
p+=GetPixelChannels(canvas_image);
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;
}
pixels=(const unsigned char *) ReadBlobStream(image,length,
GetQuantumPixels(quantum_info),&count);
}
break;
}
case LineInterlace:
{
static QuantumType
quantum_types[4] =
{
RedQuantum,
GreenQuantum,
BlueQuantum,
AlphaQuantum
};
/*
Line interlacing: RRR...GGG...BBB...RRR...GGG...BBB...
*/
if (LocaleCompare(image_info->magick,"RGBO") == 0)
quantum_types[3]=OpacityQuantum;
if (scene == 0)
{
length=GetQuantumExtent(canvas_image,quantum_info,RedQuantum);
pixels=(const unsigned char *) ReadBlobStream(image,length,
GetQuantumPixels(quantum_info),&count);
}
for (y=0; y < (ssize_t) image->extract_info.height; y++)
{
for (i=0; i < (ssize_t) (image->alpha_trait != UndefinedPixelTrait ? 4 : 3); i++)
{
register const Quantum
*magick_restrict p;
register Quantum
*magick_restrict q;
register ssize_t
x;
if (count != (ssize_t) length)
{
status=MagickFalse;
ThrowFileException(exception,CorruptImageError,
"UnexpectedEndOfFile",image->filename);
break;
}
quantum_type=quantum_types[i];
q=GetAuthenticPixels(canvas_image,0,0,canvas_image->columns,1,
exception);
if (q == (Quantum *) NULL)
break;
length=ImportQuantumPixels(canvas_image,(CacheView *) NULL,
quantum_info,quantum_type,pixels,exception);
if (SyncAuthenticPixels(canvas_image,exception) == MagickFalse)
break;
if (((y-image->extract_info.y) >= 0) &&
((y-image->extract_info.y) < (ssize_t) image->rows))
{
p=GetVirtualPixels(canvas_image,canvas_image->extract_info.x,
0,canvas_image->columns,1,exception);
q=GetAuthenticPixels(image,0,y-image->extract_info.y,
image->columns,1,exception);
if ((p == (const Quantum *) NULL) || (q == (Quantum *) NULL))
break;
for (x=0; x < (ssize_t) image->columns; x++)
{
switch (quantum_type)
{
case RedQuantum:
{
SetPixelRed(image,GetPixelRed(canvas_image,p),q);
break;
}
case GreenQuantum:
{
SetPixelGreen(image,GetPixelGreen(canvas_image,p),q);
break;
}
case BlueQuantum:
{
SetPixelBlue(image,GetPixelBlue(canvas_image,p),q);
break;
}
case OpacityQuantum:
{
SetPixelOpacity(image,GetPixelOpacity(canvas_image,p),q);
break;
}
case AlphaQuantum:
{
SetPixelAlpha(image,GetPixelAlpha(canvas_image,p),q);
break;
}
default:
break;
}
p+=GetPixelChannels(canvas_image);
q+=GetPixelChannels(image);
}
if (SyncAuthenticPixels(image,exception) == MagickFalse)
break;
}
pixels=(const unsigned char *) ReadBlobStream(image,length,
GetQuantumPixels(quantum_info),&count);
}
if (image->previous == (Image *) NULL)
{
status=SetImageProgress(image,LoadImageTag,(MagickOffsetType) y,
image->rows);
if (status == MagickFalse)
break;
}
}
break;
}
case PlaneInterlace:
{
/*
Plane interlacing: RRRRRR...GGGGGG...BBBBBB...
*/
if (scene == 0)
{
length=GetQuantumExtent(canvas_image,quantum_info,RedQuantum);
pixels=(const unsigned char *) ReadBlobStream(image,length,
GetQuantumPixels(quantum_info),&count);
}
for (y=0; y < (ssize_t) image->extract_info.height; y++)
{
register const Quantum
*magick_restrict p;
register Quantum
*magick_restrict q;
register ssize_t
x;
if (count != (ssize_t) length)
{
status=MagickFalse;
ThrowFileException(exception,CorruptImageError,
"UnexpectedEndOfFile",image->filename);
break;
}
q=GetAuthenticPixels(canvas_image,0,0,canvas_image->columns,1,
exception);
if (q == (Quantum *) NULL)
break;
length=ImportQuantumPixels(canvas_image,(CacheView *) NULL,
quantum_info,RedQuantum,pixels,exception);
if (SyncAuthenticPixels(canvas_image,exception) == MagickFalse)
break;
if (((y-image->extract_info.y) >= 0) &&
((y-image->extract_info.y) < (ssize_t) image->rows))
{
p=GetVirtualPixels(canvas_image,canvas_image->extract_info.x,0,
canvas_image->columns,1,exception);
q=GetAuthenticPixels(image,0,y-image->extract_info.y,
image->columns,1,exception);
if ((p == (const Quantum *) NULL) || (q == (Quantum *) NULL))
break;
for (x=0; x < (ssize_t) image->columns; x++)
{
SetPixelRed(image,GetPixelRed(canvas_image,p),q);
p+=GetPixelChannels(canvas_image);
q+=GetPixelChannels(image);
}
if (SyncAuthenticPixels(image,exception) == MagickFalse)
break;
}
pixels=(const unsigned char *) ReadBlobStream(image,length,
GetQuantumPixels(quantum_info),&count);
}
if (image->previous == (Image *) NULL)
{
status=SetImageProgress(image,LoadImageTag,1,6);
if (status == MagickFalse)
break;
}
for (y=0; y < (ssize_t) image->extract_info.height; y++)
{
register const Quantum
*magick_restrict p;
register Quantum
*magick_restrict q;
register ssize_t
x;
if (count != (ssize_t) length)
{
status=MagickFalse;
ThrowFileException(exception,CorruptImageError,
"UnexpectedEndOfFile",image->filename);
break;
}
q=GetAuthenticPixels(canvas_image,0,0,canvas_image->columns,1,
exception);
if (q == (Quantum *) NULL)
break;
length=ImportQuantumPixels(canvas_image,(CacheView *) NULL,
quantum_info,GreenQuantum,pixels,exception);
if (SyncAuthenticPixels(canvas_image,exception) == MagickFalse)
break;
if (((y-image->extract_info.y) >= 0) &&
((y-image->extract_info.y) < (ssize_t) image->rows))
{
p=GetVirtualPixels(canvas_image,canvas_image->extract_info.x,0,
canvas_image->columns,1,exception);
q=GetAuthenticPixels(image,0,y-image->extract_info.y,
image->columns,1,exception);
if ((p == (const Quantum *) NULL) || (q == (Quantum *) NULL))
break;
for (x=0; x < (ssize_t) image->columns; x++)
{
SetPixelGreen(image,GetPixelGreen(canvas_image,p),q);
p+=GetPixelChannels(canvas_image);
q+=GetPixelChannels(image);
}
if (SyncAuthenticPixels(image,exception) == MagickFalse)
break;
}
pixels=(const unsigned char *) ReadBlobStream(image,length,
GetQuantumPixels(quantum_info),&count);
}
if (image->previous == (Image *) NULL)
{
status=SetImageProgress(image,LoadImageTag,2,6);
if (status == MagickFalse)
break;
}
for (y=0; y < (ssize_t) image->extract_info.height; y++)
{
register const Quantum
*magick_restrict p;
register Quantum
*magick_restrict q;
register ssize_t
x;
if (count != (ssize_t) length)
{
status=MagickFalse;
ThrowFileException(exception,CorruptImageError,
"UnexpectedEndOfFile",image->filename);
break;
}
q=GetAuthenticPixels(canvas_image,0,0,canvas_image->columns,1,
exception);
if (q == (Quantum *) NULL)
break;
length=ImportQuantumPixels(canvas_image,(CacheView *) NULL,
quantum_info,BlueQuantum,pixels,exception);
if (SyncAuthenticPixels(canvas_image,exception) == MagickFalse)
break;
if (((y-image->extract_info.y) >= 0) &&
((y-image->extract_info.y) < (ssize_t) image->rows))
{
p=GetVirtualPixels(canvas_image,canvas_image->extract_info.x,0,
canvas_image->columns,1,exception);
q=GetAuthenticPixels(image,0,y-image->extract_info.y,
image->columns,1,exception);
if ((p == (const Quantum *) NULL) || (q == (Quantum *) NULL))
break;
for (x=0; x < (ssize_t) image->columns; x++)
{
SetPixelBlue(image,GetPixelBlue(canvas_image,p),q);
p+=GetPixelChannels(canvas_image);
q+=GetPixelChannels(image);
}
if (SyncAuthenticPixels(image,exception) == MagickFalse)
break;
}
pixels=(const unsigned char *) ReadBlobStream(image,length,
GetQuantumPixels(quantum_info),&count);
}
if (image->previous == (Image *) NULL)
{
status=SetImageProgress(image,LoadImageTag,4,6);
if (status == MagickFalse)
break;
}
if (image->alpha_trait != UndefinedPixelTrait)
{
for (y=0; y < (ssize_t) image->extract_info.height; y++)
{
register const Quantum
*magick_restrict p;
register Quantum
*magick_restrict q;
register ssize_t
x;
if (count != (ssize_t) length)
{
status=MagickFalse;
ThrowFileException(exception,CorruptImageError,
"UnexpectedEndOfFile",image->filename);
break;
}
q=GetAuthenticPixels(canvas_image,0,0,canvas_image->columns,1,
exception);
if (q == (Quantum *) NULL)
break;
length=ImportQuantumPixels(canvas_image,(CacheView *) NULL,
quantum_info,AlphaQuantum,pixels,exception);
if (SyncAuthenticPixels(canvas_image,exception) == MagickFalse)
break;
if (((y-image->extract_info.y) >= 0) &&
((y-image->extract_info.y) < (ssize_t) image->rows))
{
p=GetVirtualPixels(canvas_image,
canvas_image->extract_info.x,0,canvas_image->columns,1,
exception);
q=GetAuthenticPixels(image,0,y-image->extract_info.y,
image->columns,1,exception);
if ((p == (const Quantum *) NULL) || (q == (Quantum *) NULL))
break;
for (x=0; x < (ssize_t) image->columns; x++)
{
SetPixelAlpha(image,GetPixelAlpha(canvas_image,p),q);
p+=GetPixelChannels(canvas_image);
q+=GetPixelChannels(image);
}
if (SyncAuthenticPixels(image,exception) == MagickFalse)
break;
}
pixels=(const unsigned char *) ReadBlobStream(image,length,
GetQuantumPixels(quantum_info),&count);
}
if (image->previous == (Image *) NULL)
{
status=SetImageProgress(image,LoadImageTag,5,6);
if (status == MagickFalse)
break;
}
}
if (image->previous == (Image *) NULL)
{
status=SetImageProgress(image,LoadImageTag,6,6);
if (status == MagickFalse)
break;
}
break;
}
case PartitionInterlace:
{
/*
Partition interlacing: RRRRRR..., GGGGGG..., BBBBBB...
*/
AppendImageFormat("R",image->filename);
status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception);
if (status == MagickFalse)
break;
if (DiscardBlobBytes(image,(MagickSizeType) image->offset) == MagickFalse)
{
status=MagickFalse;
ThrowFileException(exception,CorruptImageError,"UnexpectedEndOfFile",
image->filename);
break;
}
length=GetQuantumExtent(canvas_image,quantum_info,RedQuantum);
for (i=0; i < (ssize_t) scene; i++)
{
for (y=0; y < (ssize_t) image->extract_info.height; y++)
{
pixels=(const unsigned char *) ReadBlobStream(image,length,
GetQuantumPixels(quantum_info),&count);
if (count != (ssize_t) length)
break;
}
if (count != (ssize_t) length)
break;
}
pixels=(const unsigned char *) ReadBlobStream(image,length,
GetQuantumPixels(quantum_info),&count);
for (y=0; y < (ssize_t) image->extract_info.height; y++)
{
register const Quantum
*magick_restrict p;
register Quantum
*magick_restrict q;
register ssize_t
x;
if (count != (ssize_t) length)
{
status=MagickFalse;
ThrowFileException(exception,CorruptImageError,
"UnexpectedEndOfFile",image->filename);
break;
}
q=GetAuthenticPixels(canvas_image,0,0,canvas_image->columns,1,
exception);
if (q == (Quantum *) NULL)
break;
length=ImportQuantumPixels(canvas_image,(CacheView *) NULL,
quantum_info,RedQuantum,pixels,exception);
if (SyncAuthenticPixels(canvas_image,exception) == MagickFalse)
break;
if (((y-image->extract_info.y) >= 0) &&
((y-image->extract_info.y) < (ssize_t) image->rows))
{
p=GetVirtualPixels(canvas_image,canvas_image->extract_info.x,0,
canvas_image->columns,1,exception);
q=GetAuthenticPixels(image,0,y-image->extract_info.y,
image->columns,1,exception);
if ((p == (const Quantum *) NULL) || (q == (Quantum *) NULL))
break;
for (x=0; x < (ssize_t) image->columns; x++)
{
SetPixelRed(image,GetPixelRed(canvas_image,p),q);
p+=GetPixelChannels(canvas_image);
q+=GetPixelChannels(image);
}
if (SyncAuthenticPixels(image,exception) == MagickFalse)
break;
}
pixels=(const unsigned char *) ReadBlobStream(image,length,
GetQuantumPixels(quantum_info),&count);
}
if (image->previous == (Image *) NULL)
{
status=SetImageProgress(image,LoadImageTag,1,5);
if (status == MagickFalse)
break;
}
(void) CloseBlob(image);
AppendImageFormat("G",image->filename);
status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception);
if (status == MagickFalse)
break;
length=GetQuantumExtent(canvas_image,quantum_info,GreenQuantum);
for (i=0; i < (ssize_t) scene; i++)
{
for (y=0; y < (ssize_t) image->extract_info.height; y++)
{
pixels=(const unsigned char *) ReadBlobStream(image,length,
GetQuantumPixels(quantum_info),&count);
if (count != (ssize_t) length)
break;
}
if (count != (ssize_t) length)
break;
}
pixels=(const unsigned char *) ReadBlobStream(image,length,
GetQuantumPixels(quantum_info),&count);
for (y=0; y < (ssize_t) image->extract_info.height; y++)
{
register const Quantum
*magick_restrict p;
register Quantum
*magick_restrict q;
register ssize_t
x;
if (count != (ssize_t) length)
{
status=MagickFalse;
ThrowFileException(exception,CorruptImageError,
"UnexpectedEndOfFile",image->filename);
break;
}
q=GetAuthenticPixels(canvas_image,0,0,canvas_image->columns,1,
exception);
if (q == (Quantum *) NULL)
break;
length=ImportQuantumPixels(canvas_image,(CacheView *) NULL,
quantum_info,GreenQuantum,pixels,exception);
if (SyncAuthenticPixels(canvas_image,exception) == MagickFalse)
break;
if (((y-image->extract_info.y) >= 0) &&
((y-image->extract_info.y) < (ssize_t) image->rows))
{
p=GetVirtualPixels(canvas_image,canvas_image->extract_info.x,0,
canvas_image->columns,1,exception);
q=GetAuthenticPixels(image,0,y-image->extract_info.y,
image->columns,1,exception);
if ((p == (const Quantum *) NULL) || (q == (Quantum *) NULL))
break;
for (x=0; x < (ssize_t) image->columns; x++)
{
SetPixelGreen(image,GetPixelGreen(canvas_image,p),q);
p+=GetPixelChannels(canvas_image);
q+=GetPixelChannels(image);
}
if (SyncAuthenticPixels(image,exception) == MagickFalse)
break;
}
pixels=(const unsigned char *) ReadBlobStream(image,length,
GetQuantumPixels(quantum_info),&count);
}
if (image->previous == (Image *) NULL)
{
status=SetImageProgress(image,LoadImageTag,2,5);
if (status == MagickFalse)
break;
}
(void) CloseBlob(image);
AppendImageFormat("B",image->filename);
status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception);
if (status == MagickFalse)
break;
length=GetQuantumExtent(canvas_image,quantum_info,BlueQuantum);
for (i=0; i < (ssize_t) scene; i++)
{
for (y=0; y < (ssize_t) image->extract_info.height; y++)
{
pixels=(const unsigned char *) ReadBlobStream(image,length,
GetQuantumPixels(quantum_info),&count);
if (count != (ssize_t) length)
break;
}
if (count != (ssize_t) length)
break;
}
pixels=(const unsigned char *) ReadBlobStream(image,length,
GetQuantumPixels(quantum_info),&count);
for (y=0; y < (ssize_t) image->extract_info.height; y++)
{
register const Quantum
*magick_restrict p;
register Quantum
*magick_restrict q;
register ssize_t
x;
if (count != (ssize_t) length)
{
status=MagickFalse;
ThrowFileException(exception,CorruptImageError,
"UnexpectedEndOfFile",image->filename);
break;
}
q=GetAuthenticPixels(canvas_image,0,0,canvas_image->columns,1,
exception);
if (q == (Quantum *) NULL)
break;
length=ImportQuantumPixels(canvas_image,(CacheView *) NULL,
quantum_info,BlueQuantum,pixels,exception);
if (SyncAuthenticPixels(canvas_image,exception) == MagickFalse)
break;
if (((y-image->extract_info.y) >= 0) &&
((y-image->extract_info.y) < (ssize_t) image->rows))
{
p=GetVirtualPixels(canvas_image,canvas_image->extract_info.x,0,
canvas_image->columns,1,exception);
q=GetAuthenticPixels(image,0,y-image->extract_info.y,
image->columns,1,exception);
if ((p == (const Quantum *) NULL) || (q == (Quantum *) NULL))
break;
for (x=0; x < (ssize_t) image->columns; x++)
{
SetPixelBlue(image,GetPixelBlue(canvas_image,p),q);
p+=GetPixelChannels(canvas_image);
q+=GetPixelChannels(image);
}
if (SyncAuthenticPixels(image,exception) == MagickFalse)
break;
}
pixels=(const unsigned char *) ReadBlobStream(image,length,
GetQuantumPixels(quantum_info),&count);
}
if (image->previous == (Image *) NULL)
{
status=SetImageProgress(image,LoadImageTag,3,5);
if (status == MagickFalse)
break;
}
if (image->alpha_trait != UndefinedPixelTrait)
{
(void) CloseBlob(image);
AppendImageFormat("A",image->filename);
status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception);
if (status == MagickFalse)
break;
length=GetQuantumExtent(canvas_image,quantum_info,AlphaQuantum);
for (i=0; i < (ssize_t) scene; i++)
{
for (y=0; y < (ssize_t) image->extract_info.height; y++)
{
pixels=(const unsigned char *) ReadBlobStream(image,length,
GetQuantumPixels(quantum_info),&count);
if (count != (ssize_t) length)
break;
}
if (count != (ssize_t) length)
break;
}
pixels=(const unsigned char *) ReadBlobStream(image,length,
GetQuantumPixels(quantum_info),&count);
for (y=0; y < (ssize_t) image->extract_info.height; y++)
{
register const Quantum
*magick_restrict p;
register Quantum
*magick_restrict q;
register ssize_t
x;
if (count != (ssize_t) length)
{
status=MagickFalse;
ThrowFileException(exception,CorruptImageError,
"UnexpectedEndOfFile",image->filename);
break;
}
q=GetAuthenticPixels(canvas_image,0,0,canvas_image->columns,1,
exception);
if (q == (Quantum *) NULL)
break;
length=ImportQuantumPixels(canvas_image,(CacheView *) NULL,
quantum_info,BlueQuantum,pixels,exception);
if (SyncAuthenticPixels(canvas_image,exception) == MagickFalse)
break;
if (((y-image->extract_info.y) >= 0) &&
((y-image->extract_info.y) < (ssize_t) image->rows))
{
p=GetVirtualPixels(canvas_image,canvas_image->extract_info.x,
0,canvas_image->columns,1,exception);
q=GetAuthenticPixels(image,0,y-image->extract_info.y,
image->columns,1,exception);
if ((p == (const Quantum *) NULL) || (q == (Quantum *) NULL))
break;
for (x=0; x < (ssize_t) image->columns; x++)
{
SetPixelAlpha(image,GetPixelAlpha(canvas_image,p),q);
p+=GetPixelChannels(canvas_image);
q+=GetPixelChannels(image);
}
if (SyncAuthenticPixels(image,exception) == MagickFalse)
break;
}
pixels=(const unsigned char *) ReadBlobStream(image,length,
GetQuantumPixels(quantum_info),&count);
}
if (image->previous == (Image *) NULL)
{
status=SetImageProgress(image,LoadImageTag,4,5);
if (status == MagickFalse)
break;
}
}
(void) CloseBlob(image);
if (image->previous == (Image *) NULL)
{
status=SetImageProgress(image,LoadImageTag,5,5);
if (status == MagickFalse)
break;
}
break;
}
}
if (status == MagickFalse)
break;
SetQuantumImageType(image,quantum_type);
/*
Proceed to next image.
*/
if (image_info->number_scenes != 0)
if (image->scene >= (image_info->scene+image_info->number_scenes-1))
break;
if (count == (ssize_t) length)
{
/*
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;
}
scene++;
} while (count == (ssize_t) length);
quantum_info=DestroyQuantumInfo(quantum_info);
canvas_image=DestroyImage(canvas_image);
(void) CloseBlob(image);
if (status == MagickFalse)
return(DestroyImageList(image));
return(GetFirstImageInList(image));
}
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% R e a d R G B 5 6 5 I m a g e %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% ReadGRAYImage() reads an image of raw RGB 5-6-5 samples and returns it. It