Example #1
0
File: art.c Project: airhuman/cwf
/*
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%   W r i t e A R T I m a g e                                           %
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%  Function WriteARTImage writes an ART image to a file.  
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%  The format of the WriteARTImage method is:
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%      unsigned int WriteARTImage(const ImageInfo *image_info,Image *image)
%
%  A description of each parameter follows.
%
%    o status: Function WriteARTImage return True if the image is written.
%      False is returned is there is a memory shortage or if the image file
%      fails to write.
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%    o image_info: Specifies a pointer to a ImageInfo structure.
%
%    o image:  A pointer to an Image structure.
%
*/
static unsigned int WriteARTImage(const ImageInfo *image_info,Image *image)
{
  long y;
  unsigned dummy = 0;
  long DataSize;
  const PixelPacket *q;
  unsigned int status;
  unsigned char Padding;
  int logging;
  unsigned char *pixels;

  /*
    Open output image file.
  */
  assert(image_info != (const ImageInfo *) NULL);
  assert(image_info->signature == MagickSignature);
  assert(image != (Image *) NULL);
  assert(image->signature == MagickSignature);
  logging=LogMagickEvent(CoderEvent,GetMagickModule(),"enter ART");
  status=OpenBlob(image_info,image,WriteBinaryBlobMode,&image->exception);
  if (status == False)
    ThrowWriterException(FileOpenError,UnableToOpenFile,image);

  DataSize = (long)((image->columns+7) / 8);
  Padding = (unsigned char)((-DataSize) & 0x01);  

  pixels=MagickAllocateMemory(unsigned char *,(size_t) (DataSize));
  if (pixels == (unsigned char *) NULL)
    ThrowWriterException(ResourceLimitError,MemoryAllocationFailed,image);

 /*
    Write ART hader.
  */
  (void) WriteBlobLSBShort(image,0);
  (void) WriteBlobLSBShort(image,image->columns);
  (void) WriteBlobLSBShort(image,0);
  (void) WriteBlobLSBShort(image,image->rows);

  /*
    Store image data.
  */
  for(y=0; y<(long)image->rows; y++)
  {
    q = AcquireImagePixels(image,0,y,image->columns,1,&image->exception);
    (void)ExportImagePixelArea(image,GrayQuantum,1,pixels,0,0);
    (void)WriteBlob(image,DataSize,pixels);
    (void)WriteBlob(image,Padding,(char *)&dummy);
  }

  status=True;

  CloseBlob(image);
  MagickFreeMemory(pixels);

  if (logging)
    (void)LogMagickEvent(CoderEvent,GetMagickModule(),"return ART");
  
  return(status);
}
Example #2
0
/*
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%  WriteARTImage() writes an image of raw bits in LSB order to a file.
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%  The format of the WriteARTImage method is:
%
%      MagickBooleanType WriteARTImage(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 WriteARTImage(const ImageInfo *image_info,Image *image,
  ExceptionInfo *exception)
{
  MagickBooleanType
    status;

  QuantumInfo
    *quantum_info;

  register const Quantum
    *p;

  size_t
    length;

  ssize_t
    count,
    y;

  unsigned char
    *pixels;

  /*
    Open output image file.
  */
  assert(image_info != (const ImageInfo *) NULL);
  assert(image_info->signature == MagickSignature);
  assert(image != (Image *) NULL);
  assert(image->signature == MagickSignature);
  if (image->debug != MagickFalse)
    (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
  assert(exception != (ExceptionInfo *) NULL);
  assert(exception->signature == MagickSignature);
  status=OpenBlob(image_info,image,WriteBinaryBlobMode,exception);
  if (status == MagickFalse)
    return(status);
  if ((image->columns > 65535UL) || (image->rows > 65535UL))
    ThrowWriterException(ImageError,"WidthOrHeightExceedsLimit");
  if (IssRGBCompatibleColorspace(image->colorspace) == MagickFalse)
    (void) TransformImageColorspace(image,sRGBColorspace,exception);
  (void) SetImageType(image,BilevelType,exception);
  image->endian=MSBEndian;
  image->depth=1;
  (void) WriteBlobLSBShort(image,0);
  (void) WriteBlobLSBShort(image,(unsigned short) image->columns);
  (void) WriteBlobLSBShort(image,0);
  (void) WriteBlobLSBShort(image,(unsigned short) image->rows);
  quantum_info=AcquireQuantumInfo(image_info,image);
  pixels=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;
    length=ExportQuantumPixels(image,(CacheView *) NULL,quantum_info,
      GrayQuantum,pixels,exception);
    count=WriteBlob(image,length,pixels);
    if (count != (ssize_t) length)
      ThrowWriterException(CorruptImageError,"UnableToWriteImageData");
    count=WriteBlob(image,(size_t) (-(ssize_t) length) & 0x01,pixels);
    status=SetImageProgress(image,SaveImageTag,(MagickOffsetType) y,
      image->rows);
    if (status == MagickFalse)
      break;
  }
  quantum_info=DestroyQuantumInfo(quantum_info);
  (void) CloseBlob(image);
  return(status);
}
Example #3
0
/*
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%  WriteEPTImage() writes an image in the Encapsulated Postscript format
%  with a TIFF preview.
%
%  The format of the WriteEPTImage method is:
%
%      MagickBooleanType WriteEPTImage(const ImageInfo *image_info,
%        Image *image,ExceptionInfo *exception)
%
%  A description of each parameter follows.
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%    o image_info: the image info.
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%    o image:  The image.
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%    o exception: return any errors or warnings in this structure.
%
*/
static MagickBooleanType WriteEPTImage(const ImageInfo *image_info,Image *image,
  ExceptionInfo *exception)
{
  char
     filename[MagickPathExtent];

  EPTInfo
    ept_info;

  Image
    *write_image;

  ImageInfo
    *write_info;

  MagickBooleanType
    status;

  /*
    Write EPT image.
  */
  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);
  write_image=CloneImage(image,0,0,MagickTrue,exception);
  if (write_image == (Image *) NULL)
    return(MagickFalse);
  write_info=CloneImageInfo(image_info);
  (void) CopyMagickString(write_info->magick,"EPS",MagickPathExtent);
  if (LocaleCompare(image_info->magick,"EPT2") == 0)
    (void) CopyMagickString(write_info->magick,"EPS2",MagickPathExtent);
  if (LocaleCompare(image_info->magick,"EPT3") == 0)
    (void) CopyMagickString(write_info->magick,"EPS3",MagickPathExtent);
  (void) ResetMagickMemory(&ept_info,0,sizeof(ept_info));
  ept_info.magick=0xc6d3d0c5ul;
  ept_info.postscript=(unsigned char *) ImageToBlob(write_info,write_image,
    &ept_info.postscript_length,exception);
  write_image=DestroyImage(write_image);
  write_info=DestroyImageInfo(write_info);
  if (ept_info.postscript == (void *) NULL)
    return(MagickFalse);
  write_image=CloneImage(image,0,0,MagickTrue,exception);
  if (write_image == (Image *) NULL)
    return(MagickFalse);
  write_info=CloneImageInfo(image_info);
  *write_info->magick='\0';
  (void) CopyMagickString(write_info->magick,"TIFF",MagickPathExtent);
  (void) FormatLocaleString(filename,MagickPathExtent,"tiff:%s",
    write_info->filename); 
  (void) CopyMagickString(write_info->filename,filename,MagickPathExtent);
  (void) TransformImage(&write_image,(char *) NULL,"512x512>",exception);
  if ((write_image->storage_class == DirectClass) ||
      (write_image->colors > 256))
    {
      QuantizeInfo
        quantize_info;

      /*
        EPT preview requires that the image is colormapped.
      */
      GetQuantizeInfo(&quantize_info);
      quantize_info.dither_method=IdentifyPaletteImage(write_image,
        exception) == MagickFalse ? RiemersmaDitherMethod : NoDitherMethod;
      (void) QuantizeImage(&quantize_info,write_image,exception);
    }
  write_info->compression=NoCompression;
  ept_info.tiff=(unsigned char *) ImageToBlob(write_info,write_image,
    &ept_info.tiff_length,exception);
  write_image=DestroyImage(write_image);
  write_info=DestroyImageInfo(write_info);
  if (ept_info.tiff == (void *) NULL)
    {
      ept_info.postscript=(unsigned char *) RelinquishMagickMemory(
        ept_info.postscript);
      return(MagickFalse);
    }
  /*
    Write EPT image.
  */
  (void) WriteBlobLSBLong(image,(unsigned int) ept_info.magick);
  (void) WriteBlobLSBLong(image,30);
  (void) WriteBlobLSBLong(image,(unsigned int) ept_info.postscript_length);
  (void) WriteBlobLSBLong(image,0);
  (void) WriteBlobLSBLong(image,0);
  (void) WriteBlobLSBLong(image,(unsigned int) ept_info.postscript_length+30);
  (void) WriteBlobLSBLong(image,(unsigned int) ept_info.tiff_length);
  (void) WriteBlobLSBShort(image,0xffff);
  (void) WriteBlob(image,ept_info.postscript_length,ept_info.postscript);
  (void) WriteBlob(image,ept_info.tiff_length,ept_info.tiff);
  /*
    Relinquish resources.
  */
  ept_info.postscript=(unsigned char *) RelinquishMagickMemory(
    ept_info.postscript);
  ept_info.tiff=(unsigned char *) RelinquishMagickMemory(ept_info.tiff);
  (void) CloseBlob(image);
  return(MagickTrue);
}