/*
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% %
% %
% %
% H H AAA L DDDD %
% H H A A L D D %
% HHHHH AAAAA L D D %
% H H A A L D D %
% H H A A LLLLL DDDD %
% %
% %
% Create Identity Hald CLUT 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/colorspace.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/module.h"
#include "MagickCore/monitor.h"
#include "MagickCore/monitor-private.h"
#include "MagickCore/pixel-accessor.h"
#include "MagickCore/quantum-private.h"
#include "MagickCore/resource_.h"
#include "MagickCore/static.h"
#include "MagickCore/string_.h"
#include "MagickCore/string-private.h"
#include "MagickCore/thread-private.h"
/*
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% %
% %
% R e a d H A L D I m a g e %
% %
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% %
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%
% ReadHALDImage() creates a Hald color lookup table image 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 ReadHALDImage method is:
%
% Image *ReadHALDImage(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 *ReadHALDImage(const ImageInfo *image_info,
ExceptionInfo *exception)
{
Image
*image;
MagickBooleanType
status;
size_t
cube_size,
level;
ssize_t
i,
y;
/*
Create HALD color lookup table image.
*/
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);
level=0;
if (*image_info->filename != '\0')
level=StringToUnsignedLong(image_info->filename);
if (image_info->scene != 0)
level=image_info->scene;
if ((level < 2) || (level > 256))
level=8;
status=MagickTrue;
cube_size=level*level;
image->columns=(size_t) (level*cube_size);
image->rows=(size_t) (level*cube_size);
status=SetImageExtent(image,image->columns,image->rows,exception);
if (status == MagickFalse)
return(DestroyImageList(image));
for (y=0; y < (ssize_t) image->rows; y+=(ssize_t) level)
{
ssize_t
blue,
green,
red;
register Quantum
*magick_restrict q;
if (status == MagickFalse)
continue;
q=QueueAuthenticPixels(image,0,y,image->columns,(size_t) level,exception);
if (q == (Quantum *) NULL)
{
status=MagickFalse;
continue;
}
blue=y/(ssize_t) level;
for (green=0; green < (ssize_t) cube_size; green++)
{
for (red=0; red < (ssize_t) cube_size; red++)
{
SetPixelRed(image,ClampToQuantum(QuantumRange*red/(cube_size-1.0)),q);
SetPixelGreen(image,ClampToQuantum(QuantumRange*green/(cube_size-1.0)),
q);
SetPixelBlue(image,ClampToQuantum(QuantumRange*blue/(cube_size-1.0)),q);
SetPixelAlpha(image,OpaqueAlpha,q);
q+=GetPixelChannels(image);
}
}
if (SyncAuthenticPixels(image,exception) == MagickFalse)
status=MagickFalse;
}
(void) CloseBlob(image);
if (status == MagickFalse)
return(DestroyImageList(image));
if (image_info->scene != 0)
for (i=0; i < (ssize_t) image_info->scene; i++)
AppendImageToList(&image,CloneImage(image,0,0,MagickTrue,exception));
return(GetFirstImageInList(image));
}
/*
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% %
% %
% %
% R e g i s t e r H A L D I m a g e %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% RegisterHALDImage() adds attributes for the Hald color lookup table 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 RegisterHALDImage method is:
%
% size_t RegisterHALDImage(void)
%
*/
ModuleExport size_t RegisterHALDImage(void)
{
MagickInfo
*entry;
entry=AcquireMagickInfo("HALD","HALD",
"Identity Hald color lookup table image");
entry->decoder=(DecodeImageHandler *) ReadHALDImage;
entry->flags^=CoderAdjoinFlag;
entry->format_type=ImplicitFormatType;
entry->flags|=CoderRawSupportFlag;
entry->flags|=CoderEndianSupportFlag;
(void) RegisterMagickInfo(entry);
return(MagickImageCoderSignature);
}
/*
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% %
% %
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% U n r e g i s t e r H A L D I m a g e %
% %
% %
% %
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%
% UnregisterHALDImage() removes format registrations made by the
% HALD module from the list of supported formats.
%
% The format of the UnregisterHALDImage method is:
%
% UnregisterHALDImage(void)
%
*/
ModuleExport void UnregisterHALDImage(void)
{
(void) UnregisterMagickInfo("HALD");
}