/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%                                                                             %
%                                                                             %
%                                                                             %
%                            PPPP   SSSSS  33333                              %
%                            P   P  SS        33                              %
%                            PPPP    SSS    333                               %
%                            P         SS     33                              %
%                            P      SSSSS  33333                              %
%                                                                             %
%                                                                             %
%                     Write Postscript Level III Format                       %
%                                                                             %
%                              Software Design                                %
%                                   Cristy                                    %
%                              Lars Ruben Skyum                               %
%                                 July 1992                                   %
%                                                                             %
%                                                                             %
%  Copyright @ 1999 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/license/                                         %
%                                                                             %
%  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/artifact.h"
#include "MagickCore/attribute.h"
#include "MagickCore/blob.h"
#include "MagickCore/blob-private.h"
#include "MagickCore/cache.h"
#include "MagickCore/channel.h"
#include "MagickCore/color.h"
#include "MagickCore/color-private.h"
#include "MagickCore/colorspace-private.h"
#include "MagickCore/compress.h"
#include "MagickCore/constitute.h"
#include "MagickCore/draw.h"
#include "MagickCore/exception.h"
#include "MagickCore/exception-private.h"
#include "MagickCore/geometry.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/option.h"
#include "MagickCore/pixel-accessor.h"
#include "MagickCore/property.h"
#include "MagickCore/quantum-private.h"
#include "MagickCore/resource_.h"
#include "MagickCore/static.h"
#include "MagickCore/string_.h"
#include "MagickCore/module.h"
#include "MagickCore/timer-private.h"
#include "MagickCore/token.h"
#include "MagickCore/utility.h"
#include "coders/coders-private.h"

/*
  Define declarations.
*/
#define PS3_NoCompression "0"
#define PS3_FaxCompression "1"
#define PS3_JPEGCompression "2"
#define PS3_LZWCompression "3"
#define PS3_RLECompression "4"
#define PS3_ZipCompression "5"

#define PS3_RGBColorspace "0"
#define PS3_CMYKColorspace "1"

#define PS3_DirectClass "0"
#define PS3_PseudoClass "1"

#if defined(MAGICKCORE_TIFF_DELEGATE)
#define CCITTParam  "-1"
#else
#define CCITTParam  "0"
#endif

/*
  Forward declarations.
*/
static MagickBooleanType
  WritePS3Image(const ImageInfo *,Image *,ExceptionInfo *);

/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%                                                                             %
%                                                                             %
%                                                                             %
%   R e g i s t e r P S 3 I m a g e                                           %
%                                                                             %
%                                                                             %
%                                                                             %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%  RegisterPS3Image() adds properties for the PS3 image format to the list of
%  supported formats.  The properties 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 RegisterPS3Image method is:
%
%      size_t RegisterPS3Image(void)
%
*/
ModuleExport size_t RegisterPS3Image(void)
{
  MagickInfo
    *entry;

  entry=AcquireMagickInfo("PS3","EPS3","Level III Encapsulated PostScript");
  entry->encoder=(EncodeImageHandler *) WritePS3Image;
  entry->mime_type=ConstantString("application/postscript");
  entry->flags|=CoderEncoderSeekableStreamFlag;
  entry->flags^=CoderBlobSupportFlag;
  (void) RegisterMagickInfo(entry);
  entry=AcquireMagickInfo("PS3","PS3","Level III PostScript");
  entry->encoder=(EncodeImageHandler *) WritePS3Image;
  entry->mime_type=ConstantString("application/postscript");
  entry->flags|=CoderEncoderSeekableStreamFlag;
  entry->flags^=CoderBlobSupportFlag;
  (void) RegisterMagickInfo(entry);
  return(MagickImageCoderSignature);
}

/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%                                                                             %
%                                                                             %
%                                                                             %
%   U n r e g i s t e r P S 3 I m a g e                                       %
%                                                                             %
%                                                                             %
%                                                                             %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%  UnregisterPS3Image() removes format registrations made by the PS3 module
%  from the list of supported formats.
%
%  The format of the UnregisterPS3Image method is:
%
%      UnregisterPS3Image(void)
%
*/
ModuleExport void UnregisterPS3Image(void)
{
  (void) UnregisterMagickInfo("EPS3");
  (void) UnregisterMagickInfo("PS3");
}

/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%                                                                             %
%                                                                             %
%                                                                             %
%   W r i t e P S 3 I m a g e                                                 %
%                                                                             %
%                                                                             %
%                                                                             %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%  WritePS3Image() translates an image to encapsulated Postscript Level III
%  for printing.  If the supplied geometry is null, the image is centered on
%  the Postscript page.  Otherwise, the image is positioned as specified by the
%  geometry.
%
%  The format of the WritePS3Image method is:
%
%      MagickBooleanType WritePS3Image(const ImageInfo *image_info,
%        Image *image,ExceptionInfo *exception)
%
%  A description of each parameter follows:
%
%    o image_info: Specifies a pointer to a ImageInfo structure.
%
%    o image: the image.
%
%    o exception: return any errors or warnings in this structure.
%
*/

static inline void FilenameToTitle(const char *filename,char *title,
  const size_t extent)
{
  int
    depth = 0;

  ssize_t
    i,
    offset = 0;

  if (extent == 0)
    return;
  for (i=0; (filename[i] != '\0') && ((offset+1) < (ssize_t) extent); i++)
  {
    unsigned char
      c = filename[i];

    /*
      Only allow printable ASCII.
    */
    if ((c < 32) || (c > 126))
      {
        title[offset++]='_';
        continue;
      }
    /*
      Percent signs break DSC parsing.
    */
    if (c == '%')
      {
        title[offset++]='_';
        continue;
      }
    /*
      Parentheses must remain balanced.
    */
    if (c == '(')
      {
        depth++;
        title[offset++] = '(';
        continue;
      }
    if (c == ')')
      {
        if (depth <= 0)
          title[offset++]='_';
        else
          {
            depth--;
            title[offset++]=')';
          }
         continue;
     }
    /*
      Everything else is allowed.
    */
    title[offset++]=c;
  }
  /*
    If parentheses remain unbalanced, close them.
  */
  while ((depth > 0) && ((offset+1) < (ssize_t) extent)) {
    title[offset++]=')';
    depth--;
  }
  title[offset]='\0';
  /*
    Ensure non-empty result.
  */
  if (offset == 0)
    {
      (void) CopyMagickString(title,"Untitled",extent-1);
      title[extent-1]='\0';
    }
}

static MagickBooleanType Huffman2DEncodeImage(const ImageInfo *image_info,
  Image *image,Image *inject_image,ExceptionInfo *exception)
{
  Image
    *group4_image;

  ImageInfo
    *write_info;

  MagickBooleanType
    status;

  size_t
    length;

  unsigned char
    *group4;

  group4_image=CloneImage(inject_image,0,0,MagickTrue,exception);
  if (group4_image == (Image *) NULL)
    return(MagickFalse);
  status=MagickTrue;
  write_info=CloneImageInfo(image_info);
  (void) CopyMagickString(write_info->filename,"GROUP4:",MagickPathExtent);
  (void) CopyMagickString(write_info->magick,"GROUP4",MagickPathExtent);
  group4=(unsigned char *) ImageToBlob(write_info,group4_image,&length,
    exception);
  group4_image=DestroyImage(group4_image);
  write_info=DestroyImageInfo(write_info);
  if (group4 == (unsigned char *) NULL)
    return(MagickFalse);
  if (WriteBlob(image,length,group4) != (ssize_t) length)
    status=MagickFalse;
  group4=(unsigned char *) RelinquishMagickMemory(group4);
  return(status);
}

static MagickBooleanType SerializeImage(const ImageInfo *image_info,
  Image *image,MemoryInfo **pixel_info,size_t *length,ExceptionInfo *exception)
{
  MagickBooleanType
    status;

  const Quantum
    *p;

  size_t
    channels,
    extent;

  ssize_t
    x,
    y;

  unsigned char
    *q;

  assert(image != (Image *) NULL);
  assert(image->signature == MagickCoreSignature);
  if (IsEventLogging() != MagickFalse)
    (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
  status=MagickTrue;
  channels=(image->colorspace == CMYKColorspace ? 4 : 3);
  if (HeapOverflowSanityCheckGetSize(channels,(size_t) image->columns,&extent) != MagickFalse)
    ThrowWriterException(ResourceLimitError,"MemoryAllocationFailed");
  if (HeapOverflowSanityCheckGetSize(extent,image->rows,length) != MagickFalse)
    ThrowWriterException(ResourceLimitError,"MemoryAllocationFailed");
  *pixel_info=AcquireVirtualMemory(*length,sizeof(*q));
  if (*pixel_info == (MemoryInfo *) NULL)
    ThrowWriterException(ResourceLimitError,"MemoryAllocationFailed");
  q=(unsigned char *) GetVirtualMemoryBlob(*pixel_info);
  (void) memset(q,0,*length*sizeof(*q));
  for (y=0; y < (ssize_t) image->rows; y++)
  {
    p=GetVirtualPixels(image,0,y,image->columns,1,exception);
    if (p == (const Quantum *) NULL)
      break;
    if (image->colorspace != CMYKColorspace)
      for (x=0; x < (ssize_t) image->columns; x++)
      {
        *q++=ScaleQuantumToChar(GetPixelRed(image,p));
        *q++=ScaleQuantumToChar(GetPixelGreen(image,p));
        *q++=ScaleQuantumToChar(GetPixelBlue(image,p));
        p+=(ptrdiff_t) GetPixelChannels(image);
      }
    else
      for (x=0; x < (ssize_t) image->columns; x++)
      {
        *q++=ScaleQuantumToChar(GetPixelRed(image,p));
        *q++=ScaleQuantumToChar(GetPixelGreen(image,p));
        *q++=ScaleQuantumToChar(GetPixelBlue(image,p));
        *q++=ScaleQuantumToChar(GetPixelBlack(image,p));
        p+=(ptrdiff_t) GetPixelChannels(image);
      }
    if (image->previous == (Image *) NULL)
      {
        status=SetImageProgress(image,SaveImageTag,(MagickOffsetType) y,
          image->rows);
        if (status == MagickFalse)
          break;
      }
  }
  if (status == MagickFalse)
    *pixel_info=RelinquishVirtualMemory(*pixel_info);
  return(status);
}

static MagickBooleanType SerializeImageChannel(const ImageInfo *image_info,
  Image *image,MemoryInfo **pixel_info,size_t *length,ExceptionInfo *exception)
{
  MagickBooleanType
    status;

  const Quantum
    *p;

  ssize_t
    x;

  unsigned char
    *q;

  size_t
    pack,
    padded_columns;

  ssize_t
    y;

  unsigned char
    code,
    bit;

  assert(image != (Image *) NULL);
  assert(image->signature == MagickCoreSignature);
  if (IsEventLogging() != MagickFalse)
    (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
  status=MagickTrue;
  pack=SetImageMonochrome(image,exception) == MagickFalse ? 1UL : 8UL;
  padded_columns=((image->columns+pack-1)/pack)*pack;
  *length=(size_t) padded_columns*image->rows/pack;
  *pixel_info=AcquireVirtualMemory(*length,sizeof(*q));
  if (*pixel_info == (MemoryInfo *) NULL)
    ThrowWriterException(ResourceLimitError,"MemoryAllocationFailed");
  q=(unsigned char *) GetVirtualMemoryBlob(*pixel_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;
    if (pack == 1)
      for (x=0; x < (ssize_t) image->columns; x++)
      {
        *q++=ScaleQuantumToChar(ClampToQuantum(GetPixelLuma(image,p)));
        p+=(ptrdiff_t) GetPixelChannels(image);
      }
    else
      {
        code='\0';
        for (x=0; x < (ssize_t) padded_columns; x++)
        {
          bit=(unsigned char) 0x00;
          if (x < (ssize_t) image->columns)
            bit=(unsigned char) (GetPixelLuma(image,p) == (double)
              TransparentAlpha ? 0x01 : 0x00);
          code=(code << 1)+bit;
          if (((x+1) % (ssize_t) pack) == 0)
            {
              *q++=code;
              code='\0';
            }
          p+=(ptrdiff_t) GetPixelChannels(image);
        }
      }
    status=SetImageProgress(image,SaveImageTag,(MagickOffsetType) y,
      image->rows);
    if (status == MagickFalse)
      break;
  }
  if (status == MagickFalse)
    *pixel_info=RelinquishVirtualMemory(*pixel_info);
  return(status);
}

static MagickBooleanType SerializeImageIndexes(const ImageInfo *image_info,
  Image *image,MemoryInfo **pixel_info,size_t *length,ExceptionInfo *exception)
{
  MagickBooleanType
    status;

  const Quantum
    *p;

  ssize_t
    x;

  unsigned char
    *q;

  ssize_t
    y;

  assert(image != (Image *) NULL);
  assert(image->signature == MagickCoreSignature);
  if (IsEventLogging() != MagickFalse)
    (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
  status=MagickTrue;
  *length=(size_t) image->columns*image->rows;
  *pixel_info=AcquireVirtualMemory(*length,sizeof(*q));
  if (*pixel_info == (MemoryInfo *) NULL)
    ThrowWriterException(ResourceLimitError,"MemoryAllocationFailed");
  q=(unsigned char *) GetVirtualMemoryBlob(*pixel_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;
    for (x=0; x < (ssize_t) image->columns; x++)
    {
      *q++=(unsigned char) ((ssize_t) GetPixelIndex(image,p));
      p+=(ptrdiff_t) GetPixelChannels(image);
    }
    if (image->previous == (Image *) NULL)
      {
        status=SetImageProgress(image,SaveImageTag,(MagickOffsetType) y,
          image->rows);
        if (status == MagickFalse)
          break;
      }
  }
  if (status == MagickFalse)
    *pixel_info=RelinquishVirtualMemory(*pixel_info);
  return(status);
}

static MagickBooleanType WritePS3MaskImage(const ImageInfo *image_info,
  Image *image,const CompressionType compression,ExceptionInfo *exception)
{
  char
    buffer[MagickPathExtent];

  Image
    *mask_image;

  MagickBooleanType
    status;

  MagickOffsetType
    offset,
    start,
    stop;

  MemoryInfo
    *pixel_info;

  ssize_t
    i;

  size_t
    length;

  unsigned char
    *pixels;

  assert(image_info != (ImageInfo *) NULL);
  assert(image_info->signature == MagickCoreSignature);
  assert(image != (Image *) NULL);
  assert(image->signature == MagickCoreSignature);
  assert(image->alpha_trait != UndefinedPixelTrait);
  if (IsEventLogging() != MagickFalse)
    (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
  status=MagickTrue;
  /*
    Note BeginData DSC comment for update later.
  */
  start=TellBlob(image);
  if (start < 0)
    ThrowWriterException(CorruptImageError,"ImproperImageHeader");
  (void) FormatLocaleString(buffer,MagickPathExtent,
    "%%%%BeginData:%13ld %s Bytes\n",0L,compression == NoCompression ?
    "ASCII" : "BINARY");
  (void) WriteBlobString(image,buffer);
  stop=TellBlob(image);
  if (stop < 0)
    ThrowWriterException(CorruptImageError,"ImproperImageHeader");
  /*
    Only lossless compressions for the mask.
  */
  switch (compression)
  {
    case NoCompression:
    default:
    {
      (void) FormatLocaleString(buffer,MagickPathExtent,
        "currentfile %.17g %.17g " PS3_NoCompression
        " ByteStreamDecodeFilter\n",(double) image->columns,(double)
        image->rows);
      break;
    }
    case FaxCompression:
    case Group4Compression:
    {
      (void) FormatLocaleString(buffer,MagickPathExtent,
        "currentfile %.17g %.17g " PS3_FaxCompression
        " ByteStreamDecodeFilter\n",(double) image->columns,(double)
        image->rows);
      break;
    }
    case LZWCompression:
    {
      (void) FormatLocaleString(buffer,MagickPathExtent,
        "currentfile %.17g %.17g " PS3_LZWCompression
        " ByteStreamDecodeFilter\n",(double) image->columns,(double)
        image->rows);
      break;
    }
    case RLECompression:
    {
      (void) FormatLocaleString(buffer,MagickPathExtent,
        "currentfile %.17g %.17g " PS3_RLECompression
        " ByteStreamDecodeFilter\n",(double) image->columns,(double)
        image->rows);
      break;
    }
    case ZipCompression:
    {
      (void) FormatLocaleString(buffer,MagickPathExtent,
        "currentfile %.17g %.17g " PS3_ZipCompression
        " ByteStreamDecodeFilter\n",(double) image->columns,(double)
        image->rows);
      break;
    }
  }
  (void) WriteBlobString(image,buffer);
  (void) WriteBlobString(image,"/ReusableStreamDecode filter\n");
  mask_image=SeparateImage(image,AlphaChannel,exception);
  if (mask_image == (Image *) NULL)
    ThrowWriterException(CoderError,exception->reason);
  (void) SetImageType(mask_image,BilevelType,exception);
  (void) SetImageType(mask_image,PaletteType,exception);
  mask_image->alpha_trait=UndefinedPixelTrait;
  pixels=(unsigned char *) NULL;
  length=0;
  switch (compression)
  {
    case NoCompression:
    default:
    {
      status=SerializeImageChannel(image_info,mask_image,&pixel_info,&length,
        exception);
      if (status == MagickFalse)
        break;
      Ascii85Initialize(image);
      pixels=(unsigned char *) GetVirtualMemoryBlob(pixel_info);
      for (i=0; i < (ssize_t) length; i++)
        Ascii85Encode(image,pixels[i]);
      Ascii85Flush(image);
      pixel_info=RelinquishVirtualMemory(pixel_info);
      break;
    }
    case FaxCompression:
    case Group4Compression:
    {
      if ((compression == FaxCompression) ||
          (LocaleCompare(CCITTParam,"0") == 0))
        status=HuffmanEncodeImage(image_info,image,mask_image,exception);
      else
        status=Huffman2DEncodeImage(image_info,image,mask_image,exception);
      break;
    }
    case LZWCompression:
    {
      status=SerializeImageChannel(image_info,mask_image,&pixel_info,&length,
        exception);
      if (status == MagickFalse)
        break;
      pixels=(unsigned char *) GetVirtualMemoryBlob(pixel_info);
      status=LZWEncodeImage(image,length,pixels,exception);
      pixel_info=RelinquishVirtualMemory(pixel_info);
      break;
    }
    case RLECompression:
    {
      status=SerializeImageChannel(image_info,mask_image,&pixel_info,&length,
        exception);
      if (status == MagickFalse)
        break;
      pixels=(unsigned char *) GetVirtualMemoryBlob(pixel_info);
      status=PackbitsEncodeImage(image,length,pixels,exception);
      pixel_info=RelinquishVirtualMemory(pixel_info);
      break;
    }
    case ZipCompression:
    {
      status=SerializeImageChannel(image_info,mask_image,&pixel_info,&length,
        exception);
      if (status == MagickFalse)
        break;
      pixels=(unsigned char *) GetVirtualMemoryBlob(pixel_info);
      status=ZLIBEncodeImage(image,length,pixels,exception);
      pixel_info=RelinquishVirtualMemory(pixel_info);
      break;
    }
  }
  mask_image=DestroyImage(mask_image);
  (void) WriteBlobByte(image,'\n');
  length=(size_t) (TellBlob(image)-stop);
  stop=TellBlob(image);
  if (stop < 0)
    ThrowWriterException(CorruptImageError,"ImproperImageHeader");
  offset=SeekBlob(image,start,SEEK_SET);
  if (offset < 0)
    ThrowWriterException(CorruptImageError,"ImproperImageHeader");
  (void) FormatLocaleString(buffer,MagickPathExtent,
    "%%%%BeginData:%13ld %s Bytes\n",(long) length,
    compression == NoCompression ? "ASCII" : "BINARY");
  (void) WriteBlobString(image,buffer);
  offset=SeekBlob(image,stop,SEEK_SET);
  if (offset < 0)
    ThrowWriterException(CorruptImageError,"ImproperImageHeader");
  (void) WriteBlobString(image,"%%EndData\n");
  (void) WriteBlobString(image, "/mask_stream exch def\n");
  return(status);
}

static MagickBooleanType WritePS3Image(const ImageInfo *image_info,Image *image,
  ExceptionInfo *exception)
{
  static const char
    PostscriptProlog[] =
      "/ByteStreamDecodeFilter\n"
      "{\n"
      "  /z exch def\n"
      "  /r exch def\n"
      "  /c exch def\n"
      "  z " PS3_NoCompression " eq { /ASCII85Decode filter } if\n"
      "  z " PS3_FaxCompression " eq\n"
      "  {\n"
      "    <<\n"
      "      /K " CCITTParam "\n"
      "      /Columns c\n"
      "      /Rows r\n"
      "    >>\n"
      "    /CCITTFaxDecode filter\n"
      "  } if\n"
      "  z " PS3_JPEGCompression " eq { /DCTDecode filter } if\n"
      "  z " PS3_LZWCompression " eq { /LZWDecode filter } if\n"
      "  z " PS3_RLECompression " eq { /RunLengthDecode filter } if\n"
      "  z " PS3_ZipCompression " eq { /FlateDecode filter } if\n"
      "} bind def\n"
      "\n"
      "/DirectClassImageDict\n"
      "{\n"
      "  colorspace " PS3_RGBColorspace " eq\n"
      "  {\n"
      "    /DeviceRGB setcolorspace\n"
      "    <<\n"
      "      /ImageType 1\n"
      "      /Width columns\n"
      "      /Height rows\n"
      "      /BitsPerComponent 8\n"
      "      /DataSource pixel_stream\n"
      "      /MultipleDataSources false\n"
      "      /ImageMatrix [columns 0 0 rows neg 0 rows]\n"
      "      /Decode [0 1 0 1 0 1]\n"
      "    >>\n"
      "  }\n"
      "  {\n"
      "    /DeviceCMYK setcolorspace\n"
      "    <<\n"
      "      /ImageType 1\n"
      "      /Width columns\n"
      "      /Height rows\n"
      "      /BitsPerComponent 8\n"
      "      /DataSource pixel_stream\n"
      "      /MultipleDataSources false\n"
      "      /ImageMatrix [columns 0 0 rows neg 0 rows]\n"
      "      /Decode\n"
      "        compression " PS3_JPEGCompression " eq\n"
      "        { [1 0 1 0 1 0 1 0] }\n"
      "        { [0 1 0 1 0 1 0 1] }\n"
      "        ifelse\n"
      "    >>\n"
      "  }\n"
      "  ifelse\n"
      "} bind def\n"
      "\n"
      "/PseudoClassImageDict\n"
      "{\n"
      "  % Colors in colormap image.\n"
      "  currentfile buffer readline pop\n"
      "  token pop /colors exch def pop\n"
      "  colors 0 eq\n"
      "  {\n"
      "    % Depth of grayscale image.\n"
      "    currentfile buffer readline pop\n"
      "    token pop /bits exch def pop\n"
      "    /DeviceGray setcolorspace\n"
      "    <<\n"
      "      /ImageType 1\n"
      "      /Width columns\n"
      "      /Height rows\n"
      "      /BitsPerComponent bits\n"
      "      /Decode [0 1]\n"
      "      /ImageMatrix [columns 0 0 rows neg 0 rows]\n"
      "      /DataSource pixel_stream\n"
      "    >>\n"
      "  }\n"
      "  {\n"
      "    % RGB colormap.\n"
      "    /colormap colors 3 mul string def\n"
      "    compression " PS3_NoCompression " eq\n"
      "    { currentfile /ASCII85Decode filter colormap readstring pop pop }\n"
      "    { currentfile colormap readstring pop pop }\n"
      "    ifelse\n"
      "    [ /Indexed /DeviceRGB colors 1 sub colormap ] setcolorspace\n"
      "    <<\n"
      "      /ImageType 1\n"
      "      /Width columns\n"
      "      /Height rows\n"
      "      /BitsPerComponent 8\n"
      "      /Decode [0 255]\n"
      "      /ImageMatrix [columns 0 0 rows neg 0 rows]\n"
      "      /DataSource pixel_stream\n"
      "    >>\n"
      "  }\n"
      "  ifelse\n"
      "} bind def\n"
      "\n"
      "/NonMaskedImageDict\n"
      "{\n"
      "  class " PS3_PseudoClass " eq\n"
      "  { PseudoClassImageDict }\n"
      "  { DirectClassImageDict }\n"
      "  ifelse\n"
      "} bind def\n"
      "\n"
      "/MaskedImageDict\n"
      "{\n"
      "  <<\n"
      "    /ImageType 3\n"
      "    /InterleaveType 3\n"
      "    /DataDict NonMaskedImageDict\n"
      "    /MaskDict\n"
      "    <<\n"
      "      /ImageType 1\n"
      "      /Width columns\n"
      "      /Height rows\n"
      "      /BitsPerComponent 1\n"
      "      /DataSource mask_stream\n"
      "      /MultipleDataSources false\n"
      "      /ImageMatrix [ columns 0 0 rows neg 0 rows]\n"
      "      /Decode [ 0 1 ]\n"
      "    >>\n"
      "  >>\n"
      "} bind def\n"
      "\n"
      "/ClipImage\n"
      "{} def\n"
      "\n"
      "/DisplayImage\n"
      "{\n"
      "  gsave\n"
      "  /buffer 512 string def\n"
      "  % Translation.\n"
      "  currentfile buffer readline pop\n"
      "  token pop /x exch def\n"
      "  token pop /y exch def pop\n"
      "  x y translate\n"
      "  % Image size and font size.\n"
      "  currentfile buffer readline pop\n"
      "  token pop /x exch def\n"
      "  token pop /y exch def pop\n"
      "  currentfile buffer readline pop\n"
      "  token pop /pointsize exch def pop\n";
  static const char
    PostscriptEpilog[] =
      "  x y scale\n"
      "  % Clipping path.\n"
      "  currentfile buffer readline pop\n"
      "  token pop /clipped exch def pop\n"
      "  % Showpage.\n"
      "  currentfile buffer readline pop\n"
      "  token pop /sp exch def pop\n"
      "  % Image pixel size.\n"
      "  currentfile buffer readline pop\n"
      "  token pop /columns exch def\n"
      "  token pop /rows exch def pop\n"
      "  % Colorspace (RGB/CMYK).\n"
      "  currentfile buffer readline pop\n"
      "  token pop /colorspace exch def pop\n"
      "  % Transparency.\n"
      "  currentfile buffer readline pop\n"
      "  token pop /alpha exch def pop\n"
      "  % Stencil mask?\n"
      "  currentfile buffer readline pop\n"
      "  token pop /stencil exch def pop\n"
      "  % Image class (direct/pseudo).\n"
      "  currentfile buffer readline pop\n"
      "  token pop /class exch def pop\n"
      "  % Compression type.\n"
      "  currentfile buffer readline pop\n"
      "  token pop /compression exch def pop\n"
      "  % Clip and render.\n"
      "  /pixel_stream currentfile columns rows compression ByteStreamDecodeFilter def\n"
      "  clipped { ClipImage } if\n"
      "  alpha stencil not and\n"
      "  { MaskedImageDict mask_stream resetfile }\n"
      "  { NonMaskedImageDict }\n"
      "  ifelse\n"
      "  stencil { 0 setgray imagemask } { image } ifelse\n"
      "  grestore\n"
      "  sp { showpage } if\n"
      "} bind def\n";

  char
    buffer[MagickPathExtent],
    date[MagickTimeExtent],
    **labels,
    page_geometry[MagickPathExtent];

  CompressionType
    compression;

  const char
    *option,
    *value;

  double
    pointsize;

  GeometryInfo
    geometry_info;

  MagickBooleanType
    status;

  MagickOffsetType
    offset,
    scene,
    start,
    stop;

  MagickStatusType
    flags;

  MemoryInfo
    *pixel_info;

  PointInfo
    delta,
    resolution,
    scale;

  RectangleInfo
    geometry,
    media_info,
    page_info;

  SegmentInfo
    bounds;

  size_t
    length,
    number_scenes,
    page,
    pixel,
    text_size;

  ssize_t
    i,
    j;

  time_t
    timer;

  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);
  assert(exception != (ExceptionInfo *) NULL);
  assert(exception->signature == MagickCoreSignature);
  if (IsEventLogging() != MagickFalse)
    (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
  status=OpenBlob(image_info,image,WriteBinaryBlobMode,exception);
  if (status == MagickFalse)
    return(MagickFalse);
  compression=image->compression;
  if (image_info->compression != UndefinedCompression)
    compression=image_info->compression;
  switch (compression)
  {
    case FaxCompression:
    case Group4Compression:
    { 
      if ((SetImageMonochrome(image,exception) == MagickFalse) ||
          (image->alpha_trait != UndefinedPixelTrait))
        compression=RLECompression;
      break;
    }
#if !defined(MAGICKCORE_JPEG_DELEGATE)
    case JPEGCompression:
    {
      compression=RLECompression;
      (void) ThrowMagickException(exception,GetMagickModule(),
        MissingDelegateError,"DelegateLibrarySupportNotBuiltIn","`%s' (JPEG)",
        image->filename);
      break;
    }
#endif
#if !defined(MAGICKCORE_ZLIB_DELEGATE)
    case ZipCompression:
    {
      compression=RLECompression;
      (void) ThrowMagickException(exception,GetMagickModule(),
        MissingDelegateError,"DelegateLibrarySupportNotBuiltIn","`%s' (ZLIB)",
        image->filename);
      break;
    }
#endif
    default:
      break;
  }
  (void) memset(&bounds,0,sizeof(bounds));
  page=0;
  scene=0;
  number_scenes=GetImageListLength(image);
  do
  {
    MagickBooleanType
      is_gray;

    /*
      Scale relative to dots-per-inch.
    */
    delta.x=DefaultResolution;
    delta.y=DefaultResolution;
    resolution.x=image->resolution.x;
    resolution.y=image->resolution.y;
    if ((resolution.x == 0.0) || (resolution.y == 0.0))
      {
        flags=ParseGeometry(PSDensityGeometry,&geometry_info);
        if ((flags & RhoValue) != 0)
          resolution.x=geometry_info.rho;
        resolution.y=resolution.x;
        if ((flags & SigmaValue) != 0)
          resolution.y=geometry_info.sigma;
      }
    if (image_info->density != (char *) NULL)
      {
        flags=ParseGeometry(image_info->density,&geometry_info);
        if ((flags & RhoValue) != 0)
          resolution.x=geometry_info.rho;
        resolution.y=resolution.x;
        if ((flags & SigmaValue) != 0)
          resolution.y=geometry_info.sigma;
      }
    if (image->units == PixelsPerCentimeterResolution)
      {
        resolution.x=(100.0*2.54*resolution.x+0.5)/100.0;
        resolution.y=(100.0*2.54*resolution.y+0.5)/100.0;
      }
    SetGeometry(image,&geometry);
    (void) FormatLocaleString(page_geometry,MagickPathExtent,"%.17gx%.17g",
      (double) image->columns,(double) image->rows);
    if (image_info->page != (char *) NULL)
      (void) CopyMagickString(page_geometry,image_info->page,MagickPathExtent);
    else
      if ((image->page.width != 0) && (image->page.height != 0))
        (void) FormatLocaleString(page_geometry,MagickPathExtent,
          "%.17gx%.17g%+.20g%+.20g",(double) image->page.width,(double)
          image->page.height,(double) image->page.x,(double) image->page.y);
      else
        if ((image->gravity != UndefinedGravity) &&
            (LocaleCompare(image_info->magick,"PS") == 0))
          (void) CopyMagickString(page_geometry,PSPageGeometry,
            MagickPathExtent);
    (void) ConcatenateMagickString(page_geometry,">",MagickPathExtent);
    (void) ParseMetaGeometry(page_geometry,&geometry.x,&geometry.y,
      &geometry.width,&geometry.height);
    scale.x=MagickSafeReciprocal(resolution.x)*geometry.width*delta.x;
    geometry.width=CastDoubleToSizeT(scale.x+0.5);
    scale.y=MagickSafeReciprocal(resolution.y)*geometry.height*delta.y;
    geometry.height=CastDoubleToSizeT(scale.y+0.5);
    (void) ParseAbsoluteGeometry(page_geometry,&media_info);
    (void) ParseGravityGeometry(image,page_geometry,&page_info,exception);
    if (image->gravity != UndefinedGravity)
      {
        geometry.x=(-page_info.x);
        geometry.y=(ssize_t) media_info.height+page_info.y-(ssize_t)
          image->rows;
      }
    pointsize=12.0;
    if (image_info->pointsize != 0.0)
      pointsize=image_info->pointsize;
    text_size=0;
    value=GetImageProperty(image,"label",exception);
    if (value != (const char *) NULL)
      text_size=(size_t) (MultilineCensus(value)*pointsize+12);
    page++;
    is_gray=IdentifyImageCoderGray(image,exception);
    if (page == 1)
      {
        char
          title[MagickPathExtent];

        /*
          Postscript header on the first page.
        */
        if (LocaleCompare(image_info->magick,"PS3") == 0)
          (void) CopyMagickString(buffer,"%!PS-Adobe-3.0\n",MagickPathExtent);
        else
          (void) CopyMagickString(buffer,"%!PS-Adobe-3.0 EPSF-3.0\n",
            MagickPathExtent);
        (void) WriteBlobString(image,buffer);
        (void) FormatLocaleString(buffer,MagickPathExtent,
          "%%%%Creator: ImageMagick %s\n",MagickLibVersionText);
        (void) WriteBlobString(image,buffer);
        FilenameToTitle(image->filename,title,MagickPathExtent);
        (void) FormatLocaleString(buffer,MagickPathExtent,"%%%%Title: %s\n",
          title);
        (void) WriteBlobString(image,buffer);
        timer=GetMagickTime();
        (void) FormatMagickTime(timer,sizeof(date),date);
        (void) FormatLocaleString(buffer,MagickPathExtent,
          "%%%%CreationDate: %s\n",date);
        (void) WriteBlobString(image,buffer);
        bounds.x1=(double) geometry.x;
        bounds.y1=(double) geometry.y;
        bounds.x2=(double) geometry.x+scale.x;
        bounds.y2=(double) geometry.y+scale.y+text_size;
        if ((image_info->adjoin != MagickFalse) &&
            (GetNextImageInList(image) != (Image *) NULL))
          {
            (void) WriteBlobString(image,"%%BoundingBox: (atend)\n");
            (void) WriteBlobString(image,"%%HiResBoundingBox: (atend)\n");
          }
        else
          {
            (void) FormatLocaleString(buffer,MagickPathExtent,
              "%%%%BoundingBox: %g %g %g %g\n",ceil(bounds.x1-0.5),
              ceil(bounds.y1-0.5),floor(bounds.x2+0.5),floor(bounds.y2+0.5));
            (void) WriteBlobString(image,buffer);
            (void) FormatLocaleString(buffer,MagickPathExtent,
              "%%%%HiResBoundingBox: %g %g %g %g\n",bounds.x1,
              bounds.y1,bounds.x2,bounds.y2);
            (void) WriteBlobString(image,buffer);
            if (image->colorspace == CMYKColorspace)
              (void) WriteBlobString(image,
                "%%DocumentProcessColors: Cyan Magenta Yellow Black\n");
            else
              if (is_gray != MagickFalse)
                (void) WriteBlobString(image,
                  "%%DocumentProcessColors: Black\n");
          }
        /*
          Font resources
        */
        value=GetImageProperty(image,"label",exception);
        if (value != (const char *) NULL)
          (void) WriteBlobString(image,
            "%%DocumentNeededResources: font Helvetica\n");
        (void) WriteBlobString(image,"%%LanguageLevel: 3\n");
        /*
          Pages, orientation and order.
        */
        if (LocaleCompare(image_info->magick,"PS3") != 0)
          (void) WriteBlobString(image,"%%Pages: 1\n");
        else
          {
            (void) WriteBlobString(image,"%%Orientation: Portrait\n");
            (void) WriteBlobString(image,"%%PageOrder: Ascend\n");
            if (image_info->adjoin == MagickFalse)
              (void) CopyMagickString(buffer,"%%Pages: 1\n",MagickPathExtent);
            else
              (void) FormatLocaleString(buffer,MagickPathExtent,
                "%%%%Pages: %.17g\n",(double) number_scenes);
            (void) WriteBlobString(image,buffer);
          }
        if (image->colorspace == CMYKColorspace)
          (void) WriteBlobString(image,
            "%%DocumentProcessColors: Cyan Magenta Yellow Black\n");
        (void) WriteBlobString(image,"%%EndComments\n");
        /*
          The static postscript procedures prolog.
        */
        (void) WriteBlobString(image,"%%BeginProlog\n");
        (void) WriteBlob(image,sizeof(PostscriptProlog)-1,PostscriptProlog);
        /*
          One label line for each line in label string.
        */
        value=GetImageProperty(image,"label",exception);
        if (value != (const char *) NULL)
          {
            (void) WriteBlobString(image,"\n  %% Labels.\n  /Helvetica "
              " findfont pointsize scalefont setfont\n");
            for (i=(ssize_t) MultilineCensus(value)-1; i >= 0; i--)
            {
              (void) WriteBlobString(image,
                "  currentfile buffer readline pop token pop\n");
              (void) FormatLocaleString(buffer,MagickPathExtent,
                "  0 y %g add moveto show pop\n",i*pointsize+12);
              (void) WriteBlobString(image,buffer);
            }
          }
        /*
          The static postscript procedures epilog.
        */
        (void) WriteBlob(image,sizeof(PostscriptEpilog)-1,PostscriptEpilog);
        (void) WriteBlobString(image,"%%EndProlog\n");
      }
    (void) FormatLocaleString(buffer,MagickPathExtent,"%%%%Page: 1 %.17g\n",
      (double) page);
    (void) WriteBlobString(image,buffer);
    /*
      Page bounding box.
    */
    (void) FormatLocaleString(buffer,MagickPathExtent,
      "%%%%PageBoundingBox: %.17g %.17g %.17g %.17g\n",(double) geometry.x,
       (double) geometry.y,geometry.x+(double) geometry.width,geometry.y+
       (double) (geometry.height+text_size));
    (void) WriteBlobString(image,buffer);
    /*
      Page process colors if not RGB.
    */
    if (image->colorspace == CMYKColorspace)
      (void) WriteBlobString(image,
        "%%PageProcessColors: Cyan Magenta Yellow Black\n");
    else
      if (is_gray != MagickFalse)
        (void) WriteBlobString(image,"%%PageProcessColors: Black\n");
    /*
      Adjust document bounding box to bound page bounding box.
    */
    if ((double) geometry.x < bounds.x1)
      bounds.x1=(double) geometry.x;
    if ((double) geometry.y < bounds.y1)
      bounds.y1=(double) geometry.y;
    if ((double) (geometry.x+scale.x) > bounds.x2)
      bounds.x2=(double) geometry.x+scale.x;
    if ((double) (geometry.y+scale.y+text_size) > bounds.y2)
      bounds.y2=(double) geometry.y+scale.y+text_size;
    /*
      Page font resource if there's a label.
    */
    value=GetImageProperty(image,"label",exception);
    if (value != (const char *) NULL)
      (void) WriteBlobString(image,"%%PageResources: font Helvetica\n");
    /*
      PS clipping path from Photoshop clipping path.
    */
    if (((image->channels & WriteMaskChannel) != 0) ||
        (LocaleNCompare("8BIM:",image->magick_filename,5) != 0))
      (void) WriteBlobString(image,"/ClipImage {} def\n");
    else
      {
        value=GetImageProperty(image,image->magick_filename,exception);
        if (value == (const char *) NULL)
          return(MagickFalse);
        (void) WriteBlobString(image,value);
        (void) WriteBlobByte(image,'\n');
      }
    /*
      Push a dictionary for our own def's if this an EPS.
    */
    if (LocaleCompare(image_info->magick,"PS3") != 0)
      (void) WriteBlobString(image,"userdict begin\n");
    /*
      Image mask.
    */
    if ((image->alpha_trait != UndefinedPixelTrait) &&
        (WritePS3MaskImage(image_info,image,compression,exception) == MagickFalse))
      {
        (void) CloseBlob(image);
        return(MagickFalse);
      }
    /*
      Remember position of BeginData comment so we can update it.
    */
    start=TellBlob(image);
    if (start < 0)
      ThrowWriterException(CorruptImageError,"ImproperImageHeader");
    (void) FormatLocaleString(buffer,MagickPathExtent,
      "%%%%BeginData:%13ld %s Bytes\n",0L,
      compression == NoCompression ? "ASCII" : "BINARY");
    (void) WriteBlobString(image,buffer);
    stop=TellBlob(image);
    if (stop < 0)
      ThrowWriterException(CorruptImageError,"ImproperImageHeader");
    (void) WriteBlobString(image,"DisplayImage\n");
    /*
      Translate, scale, and font point size.
    */
    (void) FormatLocaleString(buffer,MagickPathExtent,"%.17g %.17g\n%g %g\n%g\n",
      (double) geometry.x,(double) geometry.y,scale.x,scale.y,pointsize);
    (void) WriteBlobString(image,buffer);
    /*
      Output labels.
    */
    labels=(char **) NULL;
    value=GetImageProperty(image,"label",exception);
    if (value != (const char *) NULL)
      labels=StringToList(value);
    if (labels != (char **) NULL)
      {
        for (i=0; labels[i] != (char *) NULL; i++)
        {
          if (compression != NoCompression)
            {
              for (j=0; labels[i][j] != '\0'; j++)
                (void) WriteBlobByte(image,(unsigned char) labels[i][j]);
              (void) WriteBlobByte(image,'\n');
            }
          else
            {
              (void) WriteBlobString(image,"<~");
              Ascii85Initialize(image);
              for (j=0; labels[i][j] != '\0'; j++)
                Ascii85Encode(image,(unsigned char) labels[i][j]);
              Ascii85Flush(image);
            }
          labels[i]=DestroyString(labels[i]);
        }
        labels=(char **) RelinquishMagickMemory(labels);
      }
    /*
      Photoshop clipping path active?
    */
    if (((image->channels & WriteMaskChannel) != 0) &&
        (LocaleNCompare("8BIM:",image->magick_filename,5) == 0))
        (void) WriteBlobString(image,"true\n");
      else
        (void) WriteBlobString(image,"false\n");
    /*
      Showpage for non-EPS.
    */
    (void) WriteBlobString(image, LocaleCompare(image_info->magick,"PS3") == 0 ?
      "true\n" : "false\n");
    /*
      Image columns, rows, and color space.
    */
    (void) FormatLocaleString(buffer,MagickPathExtent,"%.17g %.17g\n%s\n",
      (double) image->columns,(double) image->rows,image->colorspace ==
      CMYKColorspace ? PS3_CMYKColorspace : PS3_RGBColorspace);
    (void) WriteBlobString(image,buffer);
    /*
      Masked image?
    */
    (void) WriteBlobString(image,image->alpha_trait != UndefinedPixelTrait ?
      "true\n" : "false\n");
    /*
      Render with imagemask operator?
    */
    option=GetImageOption(image_info,"ps3:imagemask");
    (void) WriteBlobString(image,((option != (const char *) NULL) &&
      (SetImageMonochrome(image,exception) != MagickFalse)) ?
      "true\n" : "false\n");
    /*
      Output pixel data.
    */
    pixels=(unsigned char *) NULL;
    length=0;
    if ((image_info->type != TrueColorType) &&
        (image_info->type != TrueColorAlphaType) &&
        (image_info->type != ColorSeparationType) &&
        (image_info->type != ColorSeparationAlphaType) &&
        (image->colorspace != CMYKColorspace) &&
        (is_gray != MagickFalse))
      {
        /*
          Gray images.
        */
        (void) WriteBlobString(image,PS3_PseudoClass"\n");
        switch (compression)
        {
          case NoCompression:
          default:
          {
            (void) WriteBlobString(image,PS3_NoCompression"\n");
            break;
          }
          case FaxCompression:
          case Group4Compression:
          {
            (void) WriteBlobString(image,PS3_FaxCompression"\n");
            break;
          }
          case JPEGCompression:
          {
            (void) WriteBlobString(image,PS3_JPEGCompression"\n");
            break;
          }
          case LZWCompression:
          {
            (void) WriteBlobString(image,PS3_LZWCompression"\n");
            break;
          }
          case RLECompression:
          {
            (void) WriteBlobString(image,PS3_RLECompression"\n");
            break;
          }
          case ZipCompression:
          {
            (void) WriteBlobString(image,PS3_ZipCompression"\n");
            break;
          }
        }
        /*
          Number of colors -- 0 for single component non-color mapped data.
        */
        (void) WriteBlobString(image,"0\n");
        /*
          1 bit or 8 bit components?
        */
        (void) FormatLocaleString(buffer,MagickPathExtent,"%d\n",
          SetImageMonochrome(image,exception) != MagickFalse ? 1 : 8);
        (void) WriteBlobString(image,buffer);
        /*
          Image data.
        */
        if (compression == JPEGCompression)
          status=InjectImageBlob(image_info,image,image,"jpeg",exception);
        else
          if ((compression == FaxCompression) ||
              (compression == Group4Compression))
            {
              if (LocaleCompare(CCITTParam,"0") == 0)
                status=HuffmanEncodeImage(image_info,image,image,exception);
              else
                status=Huffman2DEncodeImage(image_info,image,image,exception);
            }
          else
            {
              status=SerializeImageChannel(image_info,image,&pixel_info,&length,
                exception);
              if (status == MagickFalse)
                {
                  (void) CloseBlob(image);
                  return(MagickFalse);
                }
              pixels=(unsigned char *) GetVirtualMemoryBlob(pixel_info);
              switch (compression)
              {
                case NoCompression:
                default:
                {
                  Ascii85Initialize(image);
                  for (i=0; i < (ssize_t) length; i++)
                    Ascii85Encode(image,pixels[i]);
                  Ascii85Flush(image);
                  status=MagickTrue;
                  break;
                }
                case LZWCompression:
                {
                  status=LZWEncodeImage(image,length,pixels,exception);
                  break;
                }
                case RLECompression:
                {
                  status=PackbitsEncodeImage(image,length,pixels,exception);
                  break;
                }
                case ZipCompression:
                {
                  status=ZLIBEncodeImage(image,length,pixels,exception);
                  break;
                }
              }
              pixel_info=RelinquishVirtualMemory(pixel_info);
            }
      }
    else
      if ((image->storage_class == DirectClass) || (image->colors > 256) ||
          (compression == JPEGCompression))
        {
          /*
            Truecolor image.
          */
          (void) WriteBlobString(image,PS3_DirectClass"\n");
          switch (compression)
          {
            case NoCompression:
            default:
            {
              (void) WriteBlobString(image,PS3_NoCompression"\n");
              break;
            }
            case RLECompression:
            {
              (void) WriteBlobString(image,PS3_RLECompression"\n");
              break;
            }
            case JPEGCompression:
            {
              (void) WriteBlobString(image,PS3_JPEGCompression"\n");
              break;
            }
            case LZWCompression:
            {
              (void) WriteBlobString(image,PS3_LZWCompression"\n");
              break;
            }
            case ZipCompression:
            {
              (void) WriteBlobString(image,PS3_ZipCompression"\n");
              break;
            }
          }
          /*
            Image data.
          */
          if (compression == JPEGCompression)
            status=InjectImageBlob(image_info,image,image,"jpeg",exception);
          else
            {
              /*
                Stream based compressions.
              */
              status=SerializeImage(image_info,image,&pixel_info,&length,
                exception);
              if (status == MagickFalse)
                {
                  (void) CloseBlob(image);
                  return(MagickFalse);
                }
              pixels=(unsigned char *) GetVirtualMemoryBlob(pixel_info);
              switch (compression)
              {
                case NoCompression:
                default:
                {
                  Ascii85Initialize(image);
                  for (i=0; i < (ssize_t) length; i++)
                    Ascii85Encode(image,pixels[i]);
                  Ascii85Flush(image);
                  status=MagickTrue;
                  break;
                }
                case RLECompression:
                {
                  status=PackbitsEncodeImage(image,length,pixels,exception);
                  break;
                }
                case LZWCompression:
                {
                  status=LZWEncodeImage(image,length,pixels,exception);
                  break;
                }
                case ZipCompression:
                {
                  status=ZLIBEncodeImage(image,length,pixels,exception);
                  break;
                }
              }
              pixel_info=RelinquishVirtualMemory(pixel_info);
            }
          }
        else
          {
            /*
              Colormapped images.
            */
            (void) WriteBlobString(image,PS3_PseudoClass"\n");
            switch (compression)
            {
              case NoCompression:
              default:
              {
                (void) WriteBlobString(image,PS3_NoCompression"\n");
                break;
              }
              case RLECompression:
              {
                (void) WriteBlobString(image,PS3_RLECompression"\n");
                break;
              }
              case LZWCompression:
              {
                (void) WriteBlobString(image,PS3_LZWCompression"\n");
                break;
              }
              case ZipCompression:
              {
                (void) WriteBlobString(image,PS3_ZipCompression"\n");
                break;
              }
            }
            /*
              Number of colors in color map.
            */
            (void) FormatLocaleString(buffer,MagickPathExtent,"%.17g\n",
              (double) image->colors);
            (void) WriteBlobString(image,buffer);
            /*
              Color map - uncompressed.
            */
            if ((compression != NoCompression) &&
                (compression != UndefinedCompression))
              {
                for (i=0; i < (ssize_t) image->colors; i++)
                {
                  pixel=ScaleQuantumToChar((Quantum) image->colormap[i].red);
                  (void) WriteBlobByte(image,(unsigned char) pixel);
                  pixel=ScaleQuantumToChar((Quantum) image->colormap[i].green);
                  (void) WriteBlobByte(image,(unsigned char) pixel);
                  pixel=ScaleQuantumToChar((Quantum) image->colormap[i].blue);
                  (void) WriteBlobByte(image,(unsigned char) pixel);
                }
              }
            else
              {
                Ascii85Initialize(image);
                for (i=0; i < (ssize_t) image->colors; i++)
                {
                  pixel=ScaleQuantumToChar((Quantum) image->colormap[i].red);
                  Ascii85Encode(image,(unsigned char) pixel);
                  pixel=ScaleQuantumToChar((Quantum) image->colormap[i].green);
                  Ascii85Encode(image,(unsigned char) pixel);
                  pixel=ScaleQuantumToChar((Quantum) image->colormap[i].blue);
                  Ascii85Encode(image,(unsigned char) pixel);
                }
                Ascii85Flush(image);
              }
            status=SerializeImageIndexes(image_info,image,&pixel_info,&length,
              exception);
            if (status == MagickFalse)
              {
                (void) CloseBlob(image);
                return(MagickFalse);
              }
            pixels=(unsigned char *) GetVirtualMemoryBlob(pixel_info);
            switch (compression)
            {
              case NoCompression:
              default:
              {
                Ascii85Initialize(image);
                for (i=0; i < (ssize_t) length; i++)
                  Ascii85Encode(image,pixels[i]);
                Ascii85Flush(image);
                status=MagickTrue;
                break;
              }
              case RLECompression:
              {
                status=PackbitsEncodeImage(image,length,pixels,exception);
                break;
              }
              case LZWCompression:
              {
                status=LZWEncodeImage(image,length,pixels,exception);
                break;
              }
              case ZipCompression:
              {
                status=ZLIBEncodeImage(image,length,pixels,exception);
                break;
              }
            }
            pixel_info=RelinquishVirtualMemory(pixel_info);
          }
    (void) WriteBlobByte(image,'\n');
    if (status == MagickFalse)
      {
        (void) CloseBlob(image);
        return(MagickFalse);
      }
    /*
      Update BeginData now that we know the data size.
    */
    length=(size_t) (TellBlob(image)-stop);
    stop=TellBlob(image);
    if (stop < 0)
      ThrowWriterException(CorruptImageError,"ImproperImageHeader");
    offset=SeekBlob(image,start,SEEK_SET);
    if (offset < 0)
      ThrowWriterException(CorruptImageError,"ImproperImageHeader");
    (void) FormatLocaleString(buffer,MagickPathExtent,
      "%%%%BeginData:%13ld %s Bytes\n",(long) length,
      compression == NoCompression ? "ASCII" : "BINARY");
    (void) WriteBlobString(image,buffer);
    offset=SeekBlob(image,stop,SEEK_SET);
    (void) WriteBlobString(image,"%%EndData\n");
    /*
      End private dictionary if this an EPS.
    */
    if (LocaleCompare(image_info->magick,"PS3") != 0)
      (void) WriteBlobString(image,"end\n");
    (void) WriteBlobString(image,"%%PageTrailer\n");
    if (GetNextImageInList(image) == (Image *) NULL)
      break;
    image=SyncNextImageInList(image);
    status=SetImageProgress(image,SaveImagesTag,scene++,number_scenes);
    if (status == MagickFalse)
      break;
  } while (image_info->adjoin != MagickFalse);
  (void) WriteBlobString(image,"%%Trailer\n");
  if (page > 1)
    {
      (void) FormatLocaleString(buffer,MagickPathExtent,
        "%%%%BoundingBox: %g %g %g %g\n",ceil(bounds.x1-0.5),
        ceil(bounds.y1-0.5),floor(bounds.x2+0.5),floor(bounds.y2+0.5));
      (void) WriteBlobString(image,buffer);
      (void) FormatLocaleString(buffer,MagickPathExtent,
        "%%%%HiResBoundingBox: %g %g %g %g\n",bounds.x1,bounds.y1,bounds.x2,
        bounds.y2);
      (void) WriteBlobString(image,buffer);
    }
  (void) WriteBlobString(image,"%%EOF\n");
  if (CloseBlob(image) == MagickFalse)
    status=MagickFalse;
  return(status);
}
