Gecko [ nrupathungauniversityblr.ac.in ]

Name	Size	Permission
.deps	[ DIR ]	drwxrwxr-x
.libs	[ DIR ]	drwxrwxr-x
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Makefile.am	41.13 KB	-rw-rw-r--
aai.c	15.23 KB	-rw-rw-r--
aai.h	867 B	-rw-rw-r--
art.c	13.45 KB	-rw-rw-r--
art.h	867 B	-rw-rw-r--
ashlar.c	7.73 KB	-rw-rw-r--
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bgr.c	52.05 KB	-rw-rw-r--
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bmp.c	84.94 KB	-rw-rw-r--
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braille.c	13.36 KB	-rw-rw-r--
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bytebuffer-private.h	2.83 KB	-rw-rw-r--
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cals.h	1.07 KB	-rw-rw-r--
caption.c	15.15 KB	-rw-rw-r--
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cin.c	43.46 KB	-rw-rw-r--
cin.h	918 B	-rw-rw-r--
cip.c	11.75 KB	-rw-rw-r--
cip.h	866 B	-rw-rw-r--
clip.c	10.17 KB	-rw-rw-r--
clip.h	869 B	-rw-rw-r--
clipboard.c	13.8 KB	-rw-rw-r--
clipboard.h	884 B	-rw-rw-r--
cmyk.c	57.92 KB	-rw-rw-r--
cmyk.h	907 B	-rw-rw-r--
coders-list.h	4.33 KB	-rw-rw-r--
coders-private.h	1.02 KB	-rw-rw-r--
coders.h	4.87 KB	-rw-rw-r--
cube.c	13.96 KB	-rw-rw-r--
cube.h	870 B	-rw-rw-r--
cut.c	25.71 KB	-rw-rw-r--
cut.h	866 B	-rw-rw-r--
dcm.c	189.02 KB	-rw-rw-r--
dcm.h	908 B	-rw-rw-r--
dds.c	93.72 KB	-rw-rw-r--
dds.h	978 B	-rw-rw-r--
debug.c	10.65 KB	-rw-rw-r--
debug.h	872 B	-rw-rw-r--
dib.c	46.25 KB	-rw-rw-r--
dib.h	948 B	-rw-rw-r--
djvu.c	31.58 KB	-rw-rw-r--
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dng.c	29.29 KB	-rw-rw-r--
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dot.c	9.79 KB	-rw-rw-r--
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dps.c	20.22 KB	-rw-rw-r--
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dpx.c	69.89 KB	-rw-rw-r--
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emf.c	27.13 KB	-rw-rw-r--
emf.h	1.05 KB	-rw-rw-r--
ept.c	19.91 KB	-rw-rw-r--
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exr.c	22.79 KB	-rw-rw-r--
exr.h	918 B	-rw-rw-r--
fax.c	15.29 KB	-rw-rw-r--
fax.h	974 B	-rw-rw-r--
fits.c	29.49 KB	-rw-rw-r--
fits.h	988 B	-rw-rw-r--
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Code Editor : fits.c

/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%                                                                             %
%                                                                             %
%                                                                             %
%                        FFFFF  IIIII  TTTTT  SSSSS                           %
%                        F        I      T    SS                              %
%                        FFF      I      T     SSS                            %
%                        F        I      T       SS                           %
%                        F      IIIII    T    SSSSS                           %
%                                                                             %
%                                                                             %
%            Read/Write Flexible Image Transport System Images.               %
%                                                                             %
%                              Software Design                                %
%                                   Cristy                                    %
%                                 July 1992                                   %
%                                                                             %
%                                                                             %
%  Copyright 1999-2020 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/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/module.h"
#include "MagickCore/monitor.h"
#include "MagickCore/monitor-private.h"
#include "MagickCore/pixel-accessor.h"
#include "MagickCore/property.h"
#include "MagickCore/quantum-private.h"
#include "MagickCore/static.h"
#include "MagickCore/statistic.h"
#include "MagickCore/string_.h"
#include "MagickCore/string-private.h"
#include "MagickCore/module.h"

/*
  Forward declarations.
*/
#define FITSBlocksize  2880UL

/*
  Forward declarations.
*/
static MagickBooleanType
  WriteFITSImage(const ImageInfo *,Image *,ExceptionInfo *);

/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%                                                                             %
%                                                                             %
%                                                                             %
%   I s F I T S                                                               %
%                                                                             %
%                                                                             %
%                                                                             %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%  IsFITS() returns MagickTrue if the image format type, identified by the
%  magick string, is FITS.
%
%  The format of the IsFITS method is:
%
%      MagickBooleanType IsFITS(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 IsFITS(const unsigned char *magick,const size_t length)
{
  if (length < 6)
    return(MagickFalse);
  if (LocaleNCompare((const char *) magick,"IT0",3) == 0)
    return(MagickTrue);
  if (LocaleNCompare((const char *) magick,"SIMPLE",6) == 0)
    return(MagickTrue);
  return(MagickFalse);
}

/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%                                                                             %
%                                                                             %
%                                                                             %
%   R e a d F I T S I m a g e                                                 %
%                                                                             %
%                                                                             %
%                                                                             %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%  ReadFITSImage() reads a FITS 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 ReadFITSImage method is:
%
%      Image *ReadFITSImage(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 inline double GetFITSPixel(Image *image,int bits_per_pixel)
{
  switch (image->depth >> 3)
  {
    case 1:
      return((double) ReadBlobByte(image));
    case 2:
      return((double) ((short) ReadBlobShort(image)));
    case 4:
    {
      if (bits_per_pixel > 0)
        return((double) ReadBlobSignedLong(image));
      return((double) ReadBlobFloat(image));
    }
    case 8:
    {
      if (bits_per_pixel > 0)
        return((double) ((MagickOffsetType) ReadBlobLongLong(image)));
    }
    default:
      break;
  }
  return(ReadBlobDouble(image));
}

static MagickOffsetType GetFITSPixelExtrema(Image *image,
  const int bits_per_pixel,double *minima,double *maxima)
{
  double
    pixel;

MagickOffsetType
    offset;

MagickSizeType
    number_pixels;

offset=TellBlob(image);
  if (offset == -1)
    return(-1);
  number_pixels=(MagickSizeType) image->columns*image->rows;
  *minima=GetFITSPixel(image,bits_per_pixel);
  *maxima=(*minima);
  for (i=1; i < (MagickOffsetType) number_pixels; i++)
  {
    pixel=GetFITSPixel(image,bits_per_pixel);
    if (pixel < *minima)
      *minima=pixel;
    if (pixel > *maxima)
      *maxima=pixel;
  }
  return(SeekBlob(image,offset,SEEK_SET));
}

static inline double GetFITSPixelRange(const size_t depth)
{
  return((double) ((MagickOffsetType) GetQuantumRange(depth)));
}

static void SetFITSUnsignedPixels(const size_t length,
  const size_t bits_per_pixel,const EndianType endian,unsigned char *pixels)
{
  register ssize_t
    i;

if (endian != MSBEndian)
    pixels+=(bits_per_pixel >> 3)-1;
  for (i=0; i < (ssize_t) length; i++)
  {
    *pixels^=0x80;
    pixels+=bits_per_pixel >> 3;
  }
}

static Image *ReadFITSImage(const ImageInfo *image_info,
  ExceptionInfo *exception)
{
  typedef struct _FITSInfo
  {
    MagickBooleanType
      extend,
      simple;

int
      bits_per_pixel,
      columns,
      rows,
      number_axes,
      number_planes;

double
      min_data,
      max_data,
      zero,
      scale;

EndianType
      endian;
  } FITSInfo;

char
    *comment,
    keyword[9],
    property[MagickPathExtent],
    value[73];

double
    pixel,
    scale;

FITSInfo
    fits_info;

Image
    *image;

int
    c;

MagickBooleanType
    status;

MagickSizeType
    number_pixels;

ssize_t
    count,
    scene,
    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);
  status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception);
  if (status == MagickFalse)
    {
      image=DestroyImageList(image);
      return((Image *) NULL);
    }
  /*
    Initialize image header.
  */
  (void) memset(&fits_info,0,sizeof(fits_info));
  fits_info.extend=MagickFalse;
  fits_info.simple=MagickFalse;
  fits_info.bits_per_pixel=8;
  fits_info.columns=1;
  fits_info.rows=1;
  fits_info.number_planes=1;
  fits_info.min_data=0.0;
  fits_info.max_data=0.0;
  fits_info.zero=0.0;
  fits_info.scale=1.0;
  fits_info.endian=MSBEndian;
  /*
    Decode image header.
  */
  for (comment=(char *) NULL; EOFBlob(image) == MagickFalse; )
  {
    for ( ; EOFBlob(image) == MagickFalse; )
    {
      register char
        *p;

count=ReadBlob(image,8,(unsigned char *) keyword);
      if (count != 8)
        break;
      for (i=0; i < 8; i++)
      {
        if (isspace((int) ((unsigned char) keyword[i])) != 0)
          break;
        keyword[i]=LocaleLowercase((int) ((unsigned char) keyword[i]));
      }
      keyword[i]='\0';
      count=ReadBlob(image,72,(unsigned char *) value);
      value[72]='\0';
      if (count != 72)
        break;
      p=value;
      if (*p == '=')
        {
          p+=2;
          while (isspace((int) ((unsigned char) *p)) != 0)
            p++;
        }
      if (LocaleCompare(keyword,"end") == 0)
        break;
      if (LocaleCompare(keyword,"extend") == 0)
        fits_info.extend=(*p == 'T') || (*p == 't') ? MagickTrue : MagickFalse;
      if (LocaleCompare(keyword,"simple") == 0)
        fits_info.simple=(*p == 'T') || (*p == 't') ? MagickTrue : MagickFalse;
      if (LocaleCompare(keyword,"bitpix") == 0)
        fits_info.bits_per_pixel=StringToLong(p);
      if (LocaleCompare(keyword,"naxis") == 0)
        fits_info.number_axes=StringToLong(p);
      if (LocaleCompare(keyword,"naxis1") == 0)
        fits_info.columns=StringToLong(p);
      if (LocaleCompare(keyword,"naxis2") == 0)
        fits_info.rows=StringToLong(p);
      if (LocaleCompare(keyword,"naxis3") == 0)
        fits_info.number_planes=StringToLong(p);
      if (LocaleCompare(keyword,"datamax") == 0)
        fits_info.max_data=StringToDouble(p,(char **) NULL);
      if (LocaleCompare(keyword,"datamin") == 0)
        fits_info.min_data=StringToDouble(p,(char **) NULL);
      if (LocaleCompare(keyword,"bzero") == 0)
        fits_info.zero=StringToDouble(p,(char **) NULL);
      if (LocaleCompare(keyword,"bscale") == 0)
        fits_info.scale=StringToDouble(p,(char **) NULL);
      if (LocaleCompare(keyword,"comment") == 0)
        {
          if (comment == (char *) NULL)
            comment=ConstantString(p);
          else
            (void) ConcatenateString(&comment,p);
        }
      if (LocaleCompare(keyword,"xendian") == 0)
        {
          if (LocaleNCompare(p,"big",3) == 0)
            fits_info.endian=MSBEndian;
          else
            fits_info.endian=LSBEndian;
        }
      (void) FormatLocaleString(property,MagickPathExtent,"fits:%s",keyword);
      (void) SetImageProperty(image,property,p,exception);
    }
    c=0;
    while (((TellBlob(image) % FITSBlocksize) != 0) && (c != EOF))
      c=ReadBlobByte(image);
    if (fits_info.extend == MagickFalse)
      break;
    if ((fits_info.bits_per_pixel != 8) && (fits_info.bits_per_pixel != 16) &&
        (fits_info.bits_per_pixel != 32) && (fits_info.bits_per_pixel != 64) &&
        (fits_info.bits_per_pixel != -32) && (fits_info.bits_per_pixel != -64))
      {
        if (comment != (char *) NULL)
          comment=DestroyString(comment);
        ThrowReaderException(CorruptImageError,"ImproperImageHeader");
      }
    number_pixels=(MagickSizeType) fits_info.columns*fits_info.rows;
    if ((fits_info.simple != MagickFalse) && (fits_info.number_axes >= 1) &&
        (fits_info.number_axes <= 4) && (number_pixels != 0))
      break;
  }
  /*
    Verify that required image information is defined.
  */
  if (comment != (char *) NULL)
    {
      (void) SetImageProperty(image,"comment",comment,exception);
      comment=DestroyString(comment);
    }
  if (EOFBlob(image) != MagickFalse)
    ThrowFileException(exception,CorruptImageError,"UnexpectedEndOfFile",
      image->filename);
  number_pixels=(MagickSizeType) fits_info.columns*fits_info.rows;
  if ((fits_info.simple == MagickFalse) || (fits_info.number_axes < 1) ||
      (fits_info.number_axes > 4) || (number_pixels == 0))
    ThrowReaderException(CorruptImageError,"ImageTypeNotSupported");
  for (scene=0; scene < (ssize_t) fits_info.number_planes; scene++)
  {
    image->columns=(size_t) fits_info.columns;
    image->rows=(size_t) fits_info.rows;
    image->depth=(size_t) (fits_info.bits_per_pixel < 0 ? -1 : 1)*
      fits_info.bits_per_pixel;
    image->endian=fits_info.endian;
    image->scene=(size_t) scene;
    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)
      return(DestroyImageList(image));
    /*
      Initialize image structure.
    */
    (void) SetImageColorspace(image,GRAYColorspace,exception);
    if ((fits_info.min_data == 0.0) && (fits_info.max_data == 0.0))
      {
        if ((fits_info.bits_per_pixel == -32) ||
            (fits_info.bits_per_pixel == -64))
          (void) GetFITSPixelExtrema(image,fits_info.bits_per_pixel,
            &fits_info.min_data,&fits_info.max_data);
        else
          fits_info.max_data=GetFITSPixelRange((size_t)
            fits_info.bits_per_pixel);
      }
    else
      fits_info.max_data=GetFITSPixelRange((size_t) fits_info.bits_per_pixel);
    /*
      Convert FITS pixels to pixel packets.
    */
    scale=QuantumRange*PerceptibleReciprocal(fits_info.max_data-
      fits_info.min_data);
    for (y=(ssize_t) image->rows-1; y >= 0; y--)
    {
      q=QueueAuthenticPixels(image,0,y,image->columns,1,exception);
      if (q == (Quantum *) NULL)
        break;
      for (x=0; x < (ssize_t) image->columns; x++)
      {
        pixel=GetFITSPixel(image,fits_info.bits_per_pixel);
        if ((image->depth == 16) || (image->depth == 32) ||
            (image->depth == 64))
          SetFITSUnsignedPixels(1,image->depth,image->endian,
            (unsigned char *) &pixel);
        SetPixelGray(image,ClampToQuantum(scale*(fits_info.scale*(pixel-
          fits_info.min_data)+fits_info.zero)),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;
        }
    }
    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;
    if (scene < (ssize_t) (fits_info.number_planes-1))
      {
        /*
          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;
      }
  }
  (void) CloseBlob(image);
  if (status == MagickFalse)
    return(DestroyImageList(image));
  return(GetFirstImageInList(image));
}

/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%                                                                             %
%                                                                             %
%                                                                             %
%   R e g i s t e r F I T S I m a g e                                         %
%                                                                             %
%                                                                             %
%                                                                             %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%  RegisterFITSImage() adds attributes for the FITS 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 RegisterFITSImage method is:
%
%      size_t RegisterFITSImage(void)
%
*/
ModuleExport size_t RegisterFITSImage(void)
{
  MagickInfo
    *entry;

entry=AcquireMagickInfo("FITS","FITS","Flexible Image Transport System");
  entry->decoder=(DecodeImageHandler *) ReadFITSImage;
  entry->encoder=(EncodeImageHandler *) WriteFITSImage;
  entry->magick=(IsImageFormatHandler *) IsFITS;
  entry->flags^=CoderAdjoinFlag;
  entry->flags|=CoderDecoderSeekableStreamFlag;
  (void) RegisterMagickInfo(entry);
  entry=AcquireMagickInfo("FITS","FTS","Flexible Image Transport System");
  entry->decoder=(DecodeImageHandler *) ReadFITSImage;
  entry->encoder=(EncodeImageHandler *) WriteFITSImage;
  entry->magick=(IsImageFormatHandler *) IsFITS;
  entry->flags^=CoderAdjoinFlag;
  entry->flags|=CoderDecoderSeekableStreamFlag;
  (void) RegisterMagickInfo(entry);
  return(MagickImageCoderSignature);
}

/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%                                                                             %
%                                                                             %
%                                                                             %
%   U n r e g i s t e r F I T S I m a g e                                     %
%                                                                             %
%                                                                             %
%                                                                             %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%  UnregisterFITSImage() removes format registrations made by the
%  FITS module from the list of supported formats.
%
%  The format of the UnregisterFITSImage method is:
%
%      UnregisterFITSImage(void)
%
*/
ModuleExport void UnregisterFITSImage(void)
{
  (void) UnregisterMagickInfo("FITS");
  (void) UnregisterMagickInfo("FTS");
}

/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%                                                                             %
%                                                                             %
%                                                                             %
%   W r i t e F I T S I m a g e                                               %
%                                                                             %
%                                                                             %
%                                                                             %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%  WriteFITSImage() writes a Flexible Image Transport System image to a
%  file as gray scale intensities [0..255].
%
%  The format of the WriteFITSImage method is:
%
%      MagickBooleanType WriteFITSImage(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 inline void CopyFitsRecord(char *buffer,const char *data,
  const ssize_t offset)
{
  size_t
    length;

if (data == (char *) NULL)
    return;
  length=MagickMin(strlen(data),80);
  if (length > (size_t) (FITSBlocksize-offset))
    length=FITSBlocksize-offset-1;
  (void) CopyMagickString(buffer+offset,data,length+1);
}

static MagickBooleanType WriteFITSImage(const ImageInfo *image_info,
  Image *image,ExceptionInfo *exception)
{
  char
    *fits_info,
    header[FITSBlocksize],
    *url;

MagickBooleanType
    status;

QuantumInfo
    *quantum_info;

size_t
    length;

ssize_t
    count,
    offset,
    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) TransformImageColorspace(image,sRGBColorspace,exception);
  /*
    Allocate image memory.
  */
  fits_info=(char *) AcquireQuantumMemory(FITSBlocksize,sizeof(*fits_info));
  if (fits_info == (char *) NULL)
    ThrowWriterException(ResourceLimitError,"MemoryAllocationFailed");
  (void) memset(fits_info,' ',FITSBlocksize*sizeof(*fits_info));
  /*
    Initialize image header.
  */
  image->depth=GetImageQuantumDepth(image,MagickFalse);
  image->endian=MSBEndian;
  quantum_info=AcquireQuantumInfo(image_info,image);
  if (quantum_info == (QuantumInfo *) NULL)
    {
      fits_info=DestroyString(fits_info);
      ThrowWriterException(ResourceLimitError,"MemoryAllocationFailed");
    }
  offset=0;
  (void) FormatLocaleString(header,FITSBlocksize,
    "SIMPLE  =                    T");
  CopyFitsRecord(fits_info,header,offset);
  offset+=80;
  (void) FormatLocaleString(header,FITSBlocksize,"BITPIX  =           %10ld",
    (long) ((quantum_info->format == FloatingPointQuantumFormat ? -1 : 1)*
    image->depth));
  CopyFitsRecord(fits_info,header,offset);
  offset+=80;
  (void) FormatLocaleString(header,FITSBlocksize,"NAXIS   =           %10lu",
    SetImageGray(image,exception) != MagickFalse ? 2UL : 3UL);
  CopyFitsRecord(fits_info,header,offset);
  offset+=80;
  (void) FormatLocaleString(header,FITSBlocksize,"NAXIS1  =           %10lu",
    (unsigned long) image->columns);
  CopyFitsRecord(fits_info,header,offset);
  offset+=80;
  (void) FormatLocaleString(header,FITSBlocksize,"NAXIS2  =           %10lu",
    (unsigned long) image->rows);
  CopyFitsRecord(fits_info,header,offset);
  offset+=80;
  if (SetImageGray(image,exception) == MagickFalse)
    {
      (void) FormatLocaleString(header,FITSBlocksize,
        "NAXIS3  =           %10lu",3UL);
      CopyFitsRecord(fits_info,header,offset);
      offset+=80;
    }
  (void) FormatLocaleString(header,FITSBlocksize,"BSCALE  =         %E",1.0);
  CopyFitsRecord(fits_info,header,offset);
  offset+=80;
  (void) FormatLocaleString(header,FITSBlocksize,"BZERO   =         %E",
    image->depth > 8 ? (GetFITSPixelRange(image->depth)+1)/2.0 : 0.0);
  CopyFitsRecord(fits_info,header,offset);
  offset+=80;
  (void) FormatLocaleString(header,FITSBlocksize,"DATAMAX =         %E",
    1.0*((MagickOffsetType) GetQuantumRange(image->depth)));
  CopyFitsRecord(fits_info,header,offset);
  offset+=80;
  (void) FormatLocaleString(header,FITSBlocksize,"DATAMIN =         %E",0.0);
  CopyFitsRecord(fits_info,header,offset);
  offset+=80;
  if (image->endian == LSBEndian)
    {
      (void) FormatLocaleString(header,FITSBlocksize,"XENDIAN = 'SMALL'");
      CopyFitsRecord(fits_info,header,offset);
      offset+=80;
    }
  url=GetMagickHomeURL();
  (void) FormatLocaleString(header,FITSBlocksize,"HISTORY %.72s",url);
  url=DestroyString(url);
  CopyFitsRecord(fits_info,header,offset);
  offset+=80;
  (void) CopyMagickString(header,"END",FITSBlocksize);
  CopyFitsRecord(fits_info,header,offset);
  offset+=80;
  (void) WriteBlob(image,FITSBlocksize,(unsigned char *) fits_info);
  /*
    Convert image to fits scale PseudoColor class.
  */
  pixels=(unsigned char *) GetQuantumPixels(quantum_info);
  if (SetImageGray(image,exception) != MagickFalse)
    {
      length=GetQuantumExtent(image,quantum_info,GrayQuantum);
      for (y=(ssize_t) image->rows-1; y >= 0; y--)
      {
        p=GetVirtualPixels(image,0,y,image->columns,1,exception);
        if (p == (const Quantum *) NULL)
          break;
        length=ExportQuantumPixels(image,(CacheView *) NULL,quantum_info,
          GrayQuantum,pixels,exception);
        if (image->depth == 16)
          SetFITSUnsignedPixels(image->columns,image->depth,image->endian,
            pixels);
        if (((image->depth == 32) || (image->depth == 64)) &&
            (quantum_info->format != FloatingPointQuantumFormat))
          SetFITSUnsignedPixels(image->columns,image->depth,image->endian,
            pixels);
        count=WriteBlob(image,length,pixels);
        if (count != (ssize_t) length)
          break;
        status=SetImageProgress(image,SaveImageTag,(MagickOffsetType) y,
          image->rows);
        if (status == MagickFalse)
          break;
      }
    }
  else
    {
      length=GetQuantumExtent(image,quantum_info,RedQuantum);
      for (y=(ssize_t) image->rows-1; y >= 0; y--)
      {
        p=GetVirtualPixels(image,0,y,image->columns,1,exception);
        if (p == (const Quantum *) NULL)
          break;
        length=ExportQuantumPixels(image,(CacheView *) NULL,quantum_info,
          RedQuantum,pixels,exception);
        if (image->depth == 16)
          SetFITSUnsignedPixels(image->columns,image->depth,image->endian,
            pixels);
        if (((image->depth == 32) || (image->depth == 64)) &&
            (quantum_info->format != FloatingPointQuantumFormat))
          SetFITSUnsignedPixels(image->columns,image->depth,image->endian,
            pixels);
        count=WriteBlob(image,length,pixels);
        if (count != (ssize_t) length)
          break;
        status=SetImageProgress(image,SaveImageTag,(MagickOffsetType) y,
          image->rows);
        if (status == MagickFalse)
          break;
      }
      length=GetQuantumExtent(image,quantum_info,GreenQuantum);
      for (y=(ssize_t) image->rows-1; y >= 0; y--)
      {
        p=GetVirtualPixels(image,0,y,image->columns,1,exception);
        if (p == (const Quantum *) NULL)
          break;
        length=ExportQuantumPixels(image,(CacheView *) NULL,quantum_info,
          GreenQuantum,pixels,exception);
        if (image->depth == 16)
          SetFITSUnsignedPixels(image->columns,image->depth,image->endian,
            pixels);
        if (((image->depth == 32) || (image->depth == 64)) &&
            (quantum_info->format != FloatingPointQuantumFormat))
          SetFITSUnsignedPixels(image->columns,image->depth,image->endian,
            pixels);
        count=WriteBlob(image,length,pixels);
        if (count != (ssize_t) length)
          break;
        status=SetImageProgress(image,SaveImageTag,(MagickOffsetType) y,
          image->rows);
        if (status == MagickFalse)
          break;
      }
      length=GetQuantumExtent(image,quantum_info,BlueQuantum);
      for (y=(ssize_t) image->rows-1; y >= 0; y--)
      {
        p=GetVirtualPixels(image,0,y,image->columns,1,exception);
        if (p == (const Quantum *) NULL)
          break;
        length=ExportQuantumPixels(image,(CacheView *) NULL,quantum_info,
          BlueQuantum,pixels,exception);
        if (image->depth == 16)
          SetFITSUnsignedPixels(image->columns,image->depth,image->endian,
            pixels);
        if (((image->depth == 32) || (image->depth == 64)) &&
            (quantum_info->format != FloatingPointQuantumFormat))
          SetFITSUnsignedPixels(image->columns,image->depth,image->endian,
            pixels);
        count=WriteBlob(image,length,pixels);
        if (count != (ssize_t) length)
          break;
        status=SetImageProgress(image,SaveImageTag,(MagickOffsetType) y,
          image->rows);
        if (status == MagickFalse)
          break;
      }
    }
  quantum_info=DestroyQuantumInfo(quantum_info);
  length=(size_t) (FITSBlocksize-TellBlob(image) % FITSBlocksize);
  if (length != 0)
    {
      (void) memset(fits_info,0,length*sizeof(*fits_info));
      (void) WriteBlob(image,length,(unsigned char *) fits_info);
    }
  fits_info=DestroyString(fits_info);
  (void) CloseBlob(image);
  return(MagickTrue);
}

${this.title}

Code Editor : fits.c