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v811_spc009/external/ImageMagick/coders/fl32.c

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v811_spc009_project
4 months ago
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% %
% FFFFF L IIIII FFFFF %
% F L I F %
% FFF L I FFF %
% F L I F %
% F LLLLL IIIII F %
% %
% %
% Support FilmLight Image Format %
% %
% Software Design %
% Cristy %
% November 2020 %
% %
% %
% 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 "MagickCore/studio.h"
#include "MagickCore/attribute.h"
#include "MagickCore/blob.h"
#include "MagickCore/blob-private.h"
#include "MagickCore/cache.h"
#include "MagickCore/color-private.h"
#include "MagickCore/colormap.h"
#include "MagickCore/colorspace.h"
#include "MagickCore/colorspace-private.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/quantum-private.h"
#include "MagickCore/static.h"
#include "MagickCore/string_.h"
#include "MagickCore/module.h"
/*
Forward declarations.
*/
static MagickBooleanType
WriteFL32Image(const ImageInfo *,Image *,ExceptionInfo *);
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% I s F L 3 2 %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% IsFL32() returns MagickTrue if the image format type, identified by the
% magick string, is FL32.
%
% The format of the IsFL32 method is:
%
% MagickBooleanType IsFL32(const unsigned char *magick,const size_t extent)
%
% A description of each parameter follows:
%
% o magick: compare image format pattern against these bytes.
%
% o extent: Specifies the extent of the magick string.
%
*/
static MagickBooleanType IsFL32(const unsigned char *magick,const size_t extent)
{
if (extent < 4)
return(MagickFalse);
if (LocaleNCompare((char *) magick,"FL32",4) == 0)
return(MagickTrue);
return(MagickFalse);
}
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% R e a d F L 3 2 I m a g e %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% ReadFL32Image() reads an image of raw bits in LSB order 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 ReadFL32Image method is:
%
% Image *ReadFL32Image(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 *ReadFL32Image(const ImageInfo *image_info,
ExceptionInfo *exception)
{
Image
*image;
QuantumInfo
*quantum_info;
QuantumType
quantum_type;
MagickBooleanType
status;
size_t
extent;
ssize_t
count,
y;
unsigned char
*pixels;
unsigned int
magic;
/*
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)
{
image=DestroyImageList(image);
return((Image *) NULL);
}
magic=ReadBlobLSBLong(image);
if (magic != 842222662)
ThrowReaderException(CorruptImageError,"ImproperImageHeader");
image->depth=32;
image->endian=LSBEndian;
image->rows=(size_t) ReadBlobLSBLong(image);
image->columns=(size_t) ReadBlobLSBLong(image);
image->number_channels=(size_t) ReadBlobLSBLong(image);
if ((image->columns == 0) || (image->rows == 0) ||
(image->number_channels == 0) ||
(image->number_channels >= MaxPixelChannels))
ThrowReaderException(CorruptImageError,"ImproperImageHeader");
if (image_info->ping != MagickFalse)
{
(void) CloseBlob(image);
return(GetFirstImageInList(image));
}
switch (image->number_channels)
{
case 1:
{
image->colorspace=GRAYColorspace;
quantum_type=GrayQuantum;
break;
}
case 2:
{
image->colorspace=GRAYColorspace;
image->alpha_trait=BlendPixelTrait;
quantum_type=GrayAlphaQuantum;
break;
}
case 3:
{
quantum_type=RGBQuantum;
break;
}
case 4:
{
image->alpha_trait=BlendPixelTrait;
quantum_type=RGBAQuantum;
break;
}
default:
{
quantum_type=RGBQuantum;
image->number_meta_channels=image->number_channels-3;
break;
}
}
status=SetImageExtent(image,image->columns,image->rows,exception);
if (status == MagickFalse)
return(DestroyImageList(image));
/*
Convert FL32 image to pixel packets.
*/
quantum_info=AcquireQuantumInfo(image_info,image);
if (quantum_info == (QuantumInfo *) NULL)
ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
status=SetQuantumFormat(image,quantum_info,FloatingPointQuantumFormat);
extent=GetQuantumExtent(image,quantum_info,quantum_type);
pixels=GetQuantumPixels(quantum_info);
for (y=0; y < (ssize_t) image->rows; y++)
{
const void
*stream;
Quantum
*magick_restrict q;
q=QueueAuthenticPixels(image,0,y,image->columns,1,exception);
if (q == (Quantum *) NULL)
break;
stream=ReadBlobStream(image,extent,pixels,&count);
if (count != (ssize_t) extent)
break;
(void) ImportQuantumPixels(image,(CacheView *) NULL,quantum_info,
quantum_type,(unsigned char *) stream,exception);
if (SyncAuthenticPixels(image,exception) == MagickFalse)
break;
if (SetImageProgress(image,LoadImageTag,y,image->rows) == MagickFalse)
break;
}
SetQuantumImageType(image,quantum_type);
quantum_info=DestroyQuantumInfo(quantum_info);
if (y < (ssize_t) image->rows)
ThrowReaderException(CorruptImageError,"UnableToReadImageData");
if (EOFBlob(image) != MagickFalse)
ThrowFileException(exception,CorruptImageError,"UnexpectedEndOfFile",
image->filename);
(void) CloseBlob(image);
return(GetFirstImageInList(image));
}
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% R e g i s t e r F L 3 2 I m a g e %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% RegisterFL32Image() adds attributes for the FL32 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 RegisterFL32Image method is:
%
% size_t RegisterFL32Image(void)
%
*/
ModuleExport size_t RegisterFL32Image(void)
{
MagickInfo
*entry;
entry=AcquireMagickInfo("FL32","FL32","FilmLight");
entry->decoder=(DecodeImageHandler *) ReadFL32Image;
entry->encoder=(EncodeImageHandler *) WriteFL32Image;
entry->magick=(IsImageFormatHandler *) IsFL32;
entry->flags|=CoderRawSupportFlag;
entry->flags^=CoderAdjoinFlag;
(void) RegisterMagickInfo(entry);
return(MagickImageCoderSignature);
}
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% U n r e g i s t e r F L 3 2 I m a g e %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% UnregisterFL32Image() removes format registrations made by the
% FL32 module from the list of supported formats.
%
% The format of the UnregisterFL32Image method is:
%
% UnregisterFL32Image(void)
%
*/
ModuleExport void UnregisterFL32Image(void)
{
(void) UnregisterMagickInfo("FL32");
}
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% W r i t e F L 3 2 I m a g e %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% WriteFL32Image() writes an image of raw bits in LSB order to a file.
%
% The format of the WriteFL32Image method is:
%
% MagickBooleanType WriteFL32Image(const ImageInfo *image_info,
% Image *image,ExceptionInfo *exception)
%
% A description of each parameter follows.
%
% o image_info: the image info.
%
% o image: The image.
%
% o exception: return any errors or warnings in this structure.
%
*/
static MagickBooleanType WriteFL32Image(const ImageInfo *image_info,
Image *image,ExceptionInfo *exception)
{
MagickBooleanType
status;
QuantumInfo
*quantum_info;
QuantumType
quantum_type;
const Quantum
*p;
size_t
extent;
ssize_t
count,
y;
unsigned char
*pixels;
/*
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);
assert(exception != (ExceptionInfo *) NULL);
assert(exception->signature == MagickCoreSignature);
status=OpenBlob(image_info,image,WriteBinaryBlobMode,exception);
if (status == MagickFalse)
return(status);
(void) WriteBlobLSBLong(image,842222662U);
(void) WriteBlobLSBLong(image,(unsigned int) image->rows);
(void) WriteBlobLSBLong(image,(unsigned int) image->columns);
(void) WriteBlobLSBLong(image,(unsigned int) image->number_channels);
image->endian=LSBEndian;
image->depth=32;
switch (image->number_channels)
{
case 1:
{
quantum_type=GrayQuantum;
break;
}
case 2:
{
quantum_type=GrayAlphaQuantum;
break;
}
case 3:
{
quantum_type=RGBQuantum;
break;
}
case 4:
{
quantum_type=RGBAQuantum;
break;
}
default:
{
quantum_type=RGBQuantum;
break;
}
}
quantum_info=AcquireQuantumInfo(image_info,image);
if (quantum_info == (QuantumInfo *) NULL)
ThrowWriterException(ImageError,"MemoryAllocationFailed");
status=SetQuantumFormat(image,quantum_info,FloatingPointQuantumFormat);
pixels=(unsigned char *) GetQuantumPixels(quantum_info);
for (y=0; y < (ssize_t) image->rows; y++)
{
p=GetVirtualPixels(image,0,y,image->columns,1,exception);
if (p == (const Quantum *) NULL)
break;
extent=ExportQuantumPixels(image,(CacheView *) NULL,quantum_info,
quantum_type,pixels,exception);
count=WriteBlob(image,extent,pixels);
if (count != (ssize_t) extent)
break;
status=SetImageProgress(image,SaveImageTag,(MagickOffsetType) y,
image->rows);
if (status == MagickFalse)
break;
}
quantum_info=DestroyQuantumInfo(quantum_info);
if (y < (ssize_t) image->rows)
ThrowWriterException(CorruptImageError,"UnableToWriteImageData");
(void) CloseBlob(image);
return(status);
}