Example #1
0
/*
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%   R e a d C A C H E I m a g e                                               %
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%
%  ReadMPCImage() reads an Magick Persistent Cache 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 ReadMPCImage method is:
%
%      Image *ReadMPCImage(const ImageInfo *image_info,ExceptionInfo *exception)
%
%  Decompression code contributed by Kyle Shorter.
%
%  A description of each parameter follows:
%
%    o image_info: the image info.
%
%    o exception: return any errors or warnings in this structure.
%
*/
static Image *ReadMPCImage(const ImageInfo *image_info,ExceptionInfo *exception)
{
  char
    cache_filename[MaxTextExtent],
    id[MaxTextExtent],
    keyword[MaxTextExtent],
    *options;

  const unsigned char
    *p;

  GeometryInfo
    geometry_info;

  Image
    *image;

  int
    c;

  LinkedListInfo
    *profiles;

  MagickBooleanType
    status;

  MagickOffsetType
    offset;

  MagickStatusType
    flags;

  register long
    i;

  size_t
    length;

  ssize_t
    count;

  StringInfo
    *profile;

  unsigned long
    depth,
    quantum_depth;

  /*
    Open image file.
  */
  assert(image_info != (const ImageInfo *) NULL);
  assert(image_info->signature == MagickSignature);
  if (image_info->debug != MagickFalse)
    (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
      image_info->filename);
  assert(exception != (ExceptionInfo *) NULL);
  assert(exception->signature == MagickSignature);
  image=AcquireImage(image_info);
  status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception);
  if (status == MagickFalse)
    {
      image=DestroyImageList(image);
      return((Image *) NULL);
    }
  (void) CopyMagickString(cache_filename,image->filename,MaxTextExtent);
  AppendImageFormat("cache",cache_filename);
  c=ReadBlobByte(image);
  if (c == EOF)
    {
      image=DestroyImage(image);
      return((Image *) NULL);
    }
  *id='\0';
  (void) ResetMagickMemory(keyword,0,sizeof(keyword));
  offset=0;
  do
  {
    /*
      Decode image header;  header terminates one character beyond a ':'.
    */
    profiles=(LinkedListInfo *) NULL;
    length=MaxTextExtent;
    options=AcquireString((char *) NULL);
    quantum_depth=MAGICKCORE_QUANTUM_DEPTH;
    image->depth=8;
    image->compression=NoCompression;
    while ((isgraph(c) != MagickFalse) && (c != (int) ':'))
    {
      register char
        *p;

      if (c == (int) '{')
        {
          char
            *comment;

          /*
            Read comment-- any text between { }.
          */
          length=MaxTextExtent;
          comment=AcquireString((char *) NULL);
          for (p=comment; comment != (char *) NULL; p++)
          {
            c=ReadBlobByte(image);
            if ((c == EOF) || (c == (int) '}'))
              break;
            if ((size_t) (p-comment+1) >= length)
              {
                *p='\0';
                length<<=1;
                comment=(char *) ResizeQuantumMemory(comment,length+
                  MaxTextExtent,sizeof(*comment));
                if (comment == (char *) NULL)
                  break;
                p=comment+strlen(comment);
              }
            *p=(char) c;
          }
          if (comment == (char *) NULL)
            ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
          *p='\0';
          (void) SetImageProperty(image,"comment",comment);
          comment=DestroyString(comment);
          c=ReadBlobByte(image);
        }
      else
        if (isalnum(c) != MagickFalse)
          {
            /*
              Get the keyword.
            */
            p=keyword;
            do
            {
              if (isspace((int) ((unsigned char) c)) != 0)
                break;
              if (c == (int) '=')
                break;
              if ((size_t) (p-keyword) < (MaxTextExtent-1))
                *p++=(char) c;
              c=ReadBlobByte(image);
            } while (c != EOF);
            *p='\0';
            p=options;
            while (isspace((int) ((unsigned char) c)) != 0)
              c=ReadBlobByte(image);
            if (c == (int) '=')
              {
                /*
                  Get the keyword value.
                */
                c=ReadBlobByte(image);
                while ((c != (int) '}') && (c != EOF))
                {
                  if ((size_t) (p-options+1) >= length)
                    {
                      *p='\0';
                      length<<=1;
                      options=(char *) ResizeQuantumMemory(options,length+
                        MaxTextExtent,sizeof(*options));
                      if (options == (char *) NULL)
                        break;
                      p=options+strlen(options);
                    }
                  if (options == (char *) NULL)
                    ThrowReaderException(ResourceLimitError,
                      "MemoryAllocationFailed");
                  *p++=(char) c;
                  c=ReadBlobByte(image);
                  if (*options != '{')
                    if (isspace((int) ((unsigned char) c)) != 0)
                      break;
                }
              }
            *p='\0';
            if (*options == '{')
              (void) CopyMagickString(options,options+1,MaxTextExtent);
            /*
              Assign a value to the specified keyword.
            */
            switch (*keyword)
            {
              case 'b':
              case 'B':
              {
                if (LocaleCompare(keyword,"background-color") == 0)
                  {
                    (void) QueryColorDatabase(options,&image->background_color,
                      exception);
                    break;
                  }
                if (LocaleCompare(keyword,"blue-primary") == 0)
                  {
                    flags=ParseGeometry(options,&geometry_info);
                    image->chromaticity.blue_primary.x=geometry_info.rho;
                    image->chromaticity.blue_primary.y=geometry_info.sigma;
                    if ((flags & SigmaValue) == 0)
                      image->chromaticity.blue_primary.y=
                        image->chromaticity.blue_primary.x;
                    break;
                  }
                if (LocaleCompare(keyword,"border-color") == 0)
                  {
                    (void) QueryColorDatabase(options,&image->border_color,
                      exception);
                    break;
                  }
                (void) SetImageProperty(image,keyword,options);
                break;
              }
              case 'c':
              case 'C':
              {
                if (LocaleCompare(keyword,"class") == 0)
                  {
                    long
                      storage_class;

                    storage_class=ParseMagickOption(MagickClassOptions,
                      MagickFalse,options);
                    if (storage_class < 0)
                      break;
                    image->storage_class=(ClassType) storage_class;
                    break;
                  }
                if (LocaleCompare(keyword,"colors") == 0)
                  {
                    image->colors=StringToUnsignedLong(options);
                    break;
                  }
                if (LocaleCompare(keyword,"colorspace") == 0)
                  {
                    long
                      colorspace;

                    colorspace=ParseMagickOption(MagickColorspaceOptions,
                      MagickFalse,options);
                    if (colorspace < 0)
                      break;
                    image->colorspace=(ColorspaceType) colorspace;
                    break;
                  }
                if (LocaleCompare(keyword,"compression") == 0)
                  {
                    long
                      compression;

                    compression=ParseMagickOption(MagickCompressOptions,
                      MagickFalse,options);
                    if (compression < 0)
                      break;
                    image->compression=(CompressionType) compression;
                    break;
                  }
                if (LocaleCompare(keyword,"columns") == 0)
                  {
                    image->columns=StringToUnsignedLong(options);
                    break;
                  }
                (void) SetImageProperty(image,keyword,options);
                break;
              }
              case 'd':
              case 'D':
              {
                if (LocaleCompare(keyword,"delay") == 0)
                  {
                    image->delay=StringToUnsignedLong(options);
                    break;
                  }
                if (LocaleCompare(keyword,"depth") == 0)
                  {
                    image->depth=StringToUnsignedLong(options);
                    break;
                  }
                if (LocaleCompare(keyword,"dispose") == 0)
                  {
                    long
                      dispose;

                    dispose=ParseMagickOption(MagickDisposeOptions,MagickFalse,
                      options);
                    if (dispose < 0)
                      break;
                    image->dispose=(DisposeType) dispose;
                    break;
                  }
                (void) SetImageProperty(image,keyword,options);
                break;
              }
              case 'e':
              case 'E':
              {
                if (LocaleCompare(keyword,"endian") == 0)
                  {
                    long
                      endian;

                    endian=ParseMagickOption(MagickEndianOptions,MagickFalse,
                      options);
                    if (endian < 0)
                      break;
                    image->endian=(EndianType) endian;
                    break;
                  }
                if (LocaleCompare(keyword,"error") == 0)
                  {
                    image->error.mean_error_per_pixel=StringToDouble(options);
                    break;
                  }
                (void) SetImageProperty(image,keyword,options);
                break;
              }
              case 'g':
              case 'G':
              {
                if (LocaleCompare(keyword,"gamma") == 0)
                  {
                    image->gamma=StringToDouble(options);
                    break;
                  }
                if (LocaleCompare(keyword,"green-primary") == 0)
                  {
                    flags=ParseGeometry(options,&geometry_info);
                    image->chromaticity.green_primary.x=geometry_info.rho;
                    image->chromaticity.green_primary.y=geometry_info.sigma;
                    if ((flags & SigmaValue) == 0)
                      image->chromaticity.green_primary.y=
                        image->chromaticity.green_primary.x;
                    break;
                  }
                (void) SetImageProperty(image,keyword,options);
                break;
              }
              case 'i':
              case 'I':
              {
                if (LocaleCompare(keyword,"id") == 0)
                  {
                    (void) CopyMagickString(id,options,MaxTextExtent);
                    break;
                  }
                if (LocaleCompare(keyword,"iterations") == 0)
                  {
                    image->iterations=StringToUnsignedLong(options);
                    break;
                  }
                (void) SetImageProperty(image,keyword,options);
                break;
              }
              case 'm':
              case 'M':
              {
                if (LocaleCompare(keyword,"matte") == 0)
                  {
                    long
                      matte;

                    matte=ParseMagickOption(MagickBooleanOptions,MagickFalse,
                      options);
                    if (matte < 0)
                      break;
                    image->matte=(MagickBooleanType) matte;
                    break;
                  }
                if (LocaleCompare(keyword,"matte-color") == 0)
                  {
                    (void) QueryColorDatabase(options,&image->matte_color,
                      exception);
                    break;
                  }
                if (LocaleCompare(keyword,"maximum-error") == 0)
                  {
                    image->error.normalized_maximum_error=StringToDouble(options);
                    break;
                  }
                if (LocaleCompare(keyword,"mean-error") == 0)
                  {
                    image->error.normalized_mean_error=StringToDouble(options);
                    break;
                  }
                if (LocaleCompare(keyword,"montage") == 0)
                  {
                    (void) CloneString(&image->montage,options);
                    break;
                  }
                (void) SetImageProperty(image,keyword,options);
                break;
              }
              case 'o':
              case 'O':
              {
                if (LocaleCompare(keyword,"opaque") == 0)
                  {
                    long
                      matte;

                    matte=ParseMagickOption(MagickBooleanOptions,MagickFalse,
                      options);
                    if (matte < 0)
                      break;
                    image->matte=(MagickBooleanType) matte;
                    break;
                  }
                if (LocaleCompare(keyword,"orientation") == 0)
                  {
                    long
                      orientation;

                    orientation=ParseMagickOption(MagickOrientationOptions,
                      MagickFalse,options);
                    if (orientation < 0)
                      break;
                    image->orientation=(OrientationType) orientation;
                    break;
                  }
                (void) SetImageProperty(image,keyword,options);
                break;
              }
              case 'p':
              case 'P':
              {
                if (LocaleCompare(keyword,"page") == 0)
                  {
                    char
                      *geometry;

                    geometry=GetPageGeometry(options);
                    (void) ParseAbsoluteGeometry(geometry,&image->page);
                    geometry=DestroyString(geometry);
                    break;
                  }
                if ((LocaleNCompare(keyword,"profile:",8) == 0) ||
                    (LocaleNCompare(keyword,"profile-",8) == 0))
                  {
                    if (profiles == (LinkedListInfo *) NULL)
                      profiles=NewLinkedList(0);
                    (void) AppendValueToLinkedList(profiles,
                      AcquireString(keyword+8));
                    profile=AcquireStringInfo((size_t) StringToLong(options));
                    (void) SetImageProfile(image,keyword+8,profile);
                    profile=DestroyStringInfo(profile);
                    break;
                  }
                (void) SetImageProperty(image,keyword,options);
                break;
              }
              case 'q':
              case 'Q':
              {
                if (LocaleCompare(keyword,"quality") == 0)
                  {
                    image->quality=StringToUnsignedLong(options);
                    break;
                  }
                if (LocaleCompare(keyword,"quantum-depth") == 0)
                  {
                    quantum_depth=StringToUnsignedLong(options);
                    break;
                  }
                (void) SetImageProperty(image,keyword,options);
                break;
              }
              case 'r':
              case 'R':
              {
                if (LocaleCompare(keyword,"red-primary") == 0)
                  {
                    flags=ParseGeometry(options,&geometry_info);
                    image->chromaticity.red_primary.x=geometry_info.rho;
                    if ((flags & SigmaValue) != 0)
                      image->chromaticity.red_primary.y=geometry_info.sigma;
                    break;
                  }
                if (LocaleCompare(keyword,"rendering-intent") == 0)
                  {
                    long
                      rendering_intent;

                    rendering_intent=ParseMagickOption(MagickIntentOptions,
                      MagickFalse,options);
                    if (rendering_intent < 0)
                      break;
                    image->rendering_intent=(RenderingIntent) rendering_intent;
                    break;
                  }
                if (LocaleCompare(keyword,"resolution") == 0)
                  {
                    flags=ParseGeometry(options,&geometry_info);
                    image->x_resolution=geometry_info.rho;
                    image->y_resolution=geometry_info.sigma;
                    if ((flags & SigmaValue) == 0)
                      image->y_resolution=image->x_resolution;
                    break;
                  }
                if (LocaleCompare(keyword,"rows") == 0)
                  {
                    image->rows=StringToUnsignedLong(options);
                    break;
                  }
                (void) SetImageProperty(image,keyword,options);
                break;
              }
              case 's':
              case 'S':
              {
                if (LocaleCompare(keyword,"scene") == 0)
                  {
                    image->scene=StringToUnsignedLong(options);
                    break;
                  }
                (void) SetImageProperty(image,keyword,options);
                break;
              }
              case 't':
              case 'T':
              {
                if (LocaleCompare(keyword,"ticks-per-second") == 0)
                  {
                    image->ticks_per_second=(long) StringToLong(options);
                    break;
                  }
                if (LocaleCompare(keyword,"tile-offset") == 0)
                  {
                    char
                      *geometry;

                    geometry=GetPageGeometry(options);
                    (void) ParseAbsoluteGeometry(geometry,&image->tile_offset);
                    geometry=DestroyString(geometry);
                  }
                if (LocaleCompare(keyword,"type") == 0)
                  {
                    long
                      type;

                    type=ParseMagickOption(MagickTypeOptions,MagickFalse,
                      options);
                    if (type < 0)
                      break;
                    image->type=(ImageType) type;
                    break;
                  }
                (void) SetImageProperty(image,keyword,options);
                break;
              }
              case 'u':
              case 'U':
              {
                if (LocaleCompare(keyword,"units") == 0)
                  {
                    long
                      units;

                    units=ParseMagickOption(MagickResolutionOptions,MagickFalse,
                      options);
                    if (units < 0)
                      break;
                    image->units=(ResolutionType) units;
                    break;
                  }
                (void) SetImageProperty(image,keyword,options);
                break;
              }
              case 'w':
              case 'W':
              {
                if (LocaleCompare(keyword,"white-point") == 0)
                  {
                    flags=ParseGeometry(options,&geometry_info);
                    image->chromaticity.white_point.x=geometry_info.rho;
                    image->chromaticity.white_point.y=geometry_info.sigma;
                    if ((flags & SigmaValue) == 0)
                      image->chromaticity.white_point.y=
                        image->chromaticity.white_point.x;
                    break;
                  }
                (void) SetImageProperty(image,keyword,options);
                break;
              }
              default:
              {
                (void) SetImageProperty(image,keyword,options);
                break;
              }
            }
          }
        else
          c=ReadBlobByte(image);
      while (isspace((int) ((unsigned char) c)) != 0)
        c=ReadBlobByte(image);
    }
    options=DestroyString(options);
    (void) ReadBlobByte(image);
    /*
      Verify that required image information is defined.
    */
    if ((LocaleCompare(id,"MagickCache") != 0) ||
        (image->storage_class == UndefinedClass) ||
        (image->compression == UndefinedCompression) || (image->columns == 0) ||
        (image->rows == 0))
      ThrowReaderException(CorruptImageError,"ImproperImageHeader");
    if (quantum_depth != MAGICKCORE_QUANTUM_DEPTH)
      ThrowReaderException(CacheError,"InconsistentPersistentCacheDepth");
    if (image->montage != (char *) NULL)
      {
        register char
          *p;

        /*
          Image directory.
        */
        length=MaxTextExtent;
        image->directory=AcquireString((char *) NULL);
        p=image->directory;
        do
        {
          *p='\0';
          if ((strlen(image->directory)+MaxTextExtent) >= length)
            {
              /*
                Allocate more memory for the image directory.
              */
              length<<=1;
              image->directory=(char *) ResizeQuantumMemory(image->directory,
                length+MaxTextExtent,sizeof(*image->directory));
              if (image->directory == (char *) NULL)
                ThrowReaderException(CorruptImageError,"UnableToReadImageData");
              p=image->directory+strlen(image->directory);
            }
          c=ReadBlobByte(image);
          *p++=(char) c;
        } while (c != (int) '\0');
      }
    if (profiles != (LinkedListInfo *) NULL)
      {
        const char
          *name;

        const StringInfo
          *profile;

        register unsigned char
          *p;

        /*
          Read image profiles.
        */
        ResetLinkedListIterator(profiles);
        name=(const char *) GetNextValueInLinkedList(profiles);
        while (name != (const char *) NULL)
        {
          profile=GetImageProfile(image,name);
          if (profile != (StringInfo *) NULL)
            {
              p=GetStringInfoDatum(profile);
              count=ReadBlob(image,GetStringInfoLength(profile),p);
            }
          name=(const char *) GetNextValueInLinkedList(profiles);
        }
        profiles=DestroyLinkedList(profiles,RelinquishMagickMemory);
      }
    depth=GetImageQuantumDepth(image,MagickFalse);
    if (image->storage_class == PseudoClass)
      {
        /*
          Create image colormap.
        */
        if (AcquireImageColormap(image,image->colors) == MagickFalse)
          ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
        if (image->colors != 0)
          {
            size_t
              packet_size;

            unsigned char
              *colormap;

            /*
              Read image colormap from file.
            */
            packet_size=(size_t) (3UL*depth/8UL);
            colormap=(unsigned char *) AcquireQuantumMemory(image->colors,
              packet_size*sizeof(*colormap));
            if (colormap == (unsigned char *) NULL)
              ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
            count=ReadBlob(image,packet_size*image->colors,colormap);
            if (count != (ssize_t) (packet_size*image->colors))
              ThrowReaderException(CorruptImageError,
                "InsufficientImageDataInFile");
            p=colormap;
            switch (depth)
            {
              default:
                ThrowReaderException(CorruptImageError,
                  "ImageDepthNotSupported");
              case 8:
              {
                unsigned char
                  pixel;

                for (i=0; i < (long) image->colors; i++)
                {
                  p=PushCharPixel(p,&pixel);
                  image->colormap[i].red=ScaleCharToQuantum(pixel);
                  p=PushCharPixel(p,&pixel);
                  image->colormap[i].green=ScaleCharToQuantum(pixel);
                  p=PushCharPixel(p,&pixel);
                  image->colormap[i].blue=ScaleCharToQuantum(pixel);
                }
                break;
              }
              case 16:
              {
                unsigned short
                  pixel;

                for (i=0; i < (long) image->colors; i++)
                {
                  p=PushShortPixel(MSBEndian,p,&pixel);
                  image->colormap[i].red=ScaleShortToQuantum(pixel);
                  p=PushShortPixel(MSBEndian,p,&pixel);
                  image->colormap[i].green=ScaleShortToQuantum(pixel);
                  p=PushShortPixel(MSBEndian,p,&pixel);
                  image->colormap[i].blue=ScaleShortToQuantum(pixel);
                }
                break;
              }
              case 32:
              {
                unsigned long
                  pixel;

                for (i=0; i < (long) image->colors; i++)
                {
                  p=PushLongPixel(MSBEndian,p,&pixel);
                  image->colormap[i].red=ScaleLongToQuantum(pixel);
                  p=PushLongPixel(MSBEndian,p,&pixel);
                  image->colormap[i].green=ScaleLongToQuantum(pixel);
                  p=PushLongPixel(MSBEndian,p,&pixel);
                  image->colormap[i].blue=ScaleLongToQuantum(pixel);
                }
                break;
              }
            }
            colormap=(unsigned char *) RelinquishMagickMemory(colormap);
          }
      }
    if (EOFBlob(image) != MagickFalse)
      {
        ThrowFileException(exception,CorruptImageError,"UnexpectedEndOfFile",
          image->filename);
        break;
      }
    if ((image_info->ping != MagickFalse) && (image_info->number_scenes != 0))
      if (image->scene >= (image_info->scene+image_info->number_scenes-1))
        break;
    /*
      Attach persistent pixel cache.
    */
    status=PersistPixelCache(image,cache_filename,MagickTrue,&offset,exception);
    if (status == MagickFalse)
      ThrowReaderException(CacheError,"UnableToPersistPixelCache");
    /*
      Proceed to next image.
    */
    do
    {
      c=ReadBlobByte(image);
    } while ((isgraph(c) == MagickFalse) && (c != EOF));
    if (c != EOF)
      {
        /*
          Allocate next image structure.
        */
        AcquireNextImage(image_info,image);
        if (GetNextImageInList(image) == (Image *) NULL)
          {
            image=DestroyImageList(image);
            return((Image *) NULL);
          }
        image=SyncNextImageInList(image);
        status=SetImageProgress(image,LoadImagesTag,TellBlob(image),
          GetBlobSize(image));
        if (status == MagickFalse)
          break;
      }
  } while (c != EOF);
  (void) CloseBlob(image);
  return(GetFirstImageInList(image));
}
Example #2
0
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[MaxTextExtent],
    value[73];

    double
    pixel,
    scale;

    FITSInfo
    fits_info;

    Image
    *image;

    int
    c;

    MagickBooleanType
    status;

    MagickSizeType
    number_pixels;

    register ssize_t
    i,
    x;

    register PixelPacket
    *q;

    ssize_t
    count,
    scene,
    y;

    /*
      Open image file.
    */
    assert(image_info != (const ImageInfo *) NULL);
    assert(image_info->signature == MagickSignature);
    if (image_info->debug != MagickFalse)
        (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
                              image_info->filename);
    assert(exception != (ExceptionInfo *) NULL);
    assert(exception->signature == MagickSignature);
    image=AcquireImage(image_info);
    status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception);
    if (status == MagickFalse)
    {
        image=DestroyImageList(image);
        return((Image *) NULL);
    }
    /*
      Initialize image header.
    */
    (void) ResetMagickMemory(&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.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]=tolower((int) ((unsigned char) keyword[i]));
            }
            keyword[i]='\0';
            count=ReadBlob(image,72,(unsigned char *) value);
            if (count != 72)
                break;
            value[72]='\0';
            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=InterpretLocaleValue(p,(char **) NULL);
            if (LocaleCompare(keyword,"datamin") == 0)
                fits_info.min_data=InterpretLocaleValue(p,(char **) NULL);
            if (LocaleCompare(keyword,"bzero") == 0)
                fits_info.zero=InterpretLocaleValue(p,(char **) NULL);
            if (LocaleCompare(keyword,"bscale") == 0)
                fits_info.scale=InterpretLocaleValue(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,MaxTextExtent,"fits:%s",keyword);
            (void) SetImageProperty(image,property,p);
        }
        c=0;
        while (((TellBlob(image) % FITSBlocksize) != 0) && (c != EOF))
            c=ReadBlobByte(image);
        if (fits_info.extend == MagickFalse)
            break;
        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);
        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;
        /*
          Initialize image structure.
        */
        if ((fits_info.min_data != 0.0) || (fits_info.max_data != 0.0))
        {
            if ((fits_info.bits_per_pixel != 0) && (fits_info.max_data == 0.0))
                fits_info.max_data=GetFITSPixelRange((size_t)
                                                     fits_info.bits_per_pixel);
        }
        else
            GetFITSPixelExtrema(image,fits_info.bits_per_pixel,&fits_info.min_data,
                                &fits_info.max_data);
        /*
          Convert FITS pixels to pixel packets.
        */
        scale=(double) QuantumRange/(fits_info.scale*(fits_info.max_data-
                                     fits_info.min_data)+fits_info.zero);
        for (y=(ssize_t) image->rows-1; y >= 0; y--)
        {
            q=QueueAuthenticPixels(image,0,y,image->columns,1,exception);
            if (q == (PixelPacket *) NULL)
                break;
            for (x=0; x < (ssize_t) image->columns; x++)
            {
                pixel=GetFITSPixel(image,fits_info.bits_per_pixel);
                SetPixelRed(q,ClampToQuantum(scale*(fits_info.scale*(pixel-
                                                    fits_info.min_data)+fits_info.zero)));
                SetPixelGreen(q,GetPixelRed(q));
                SetPixelBlue(q,GetPixelRed(q));
                q++;
            }
            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);
            if (GetNextImageInList(image) == (Image *) NULL)
            {
                image=DestroyImageList(image);
                return((Image *) NULL);
            }
            image=SyncNextImageInList(image);
            status=SetImageProgress(image,LoadImagesTag,TellBlob(image),
                                    GetBlobSize(image));
            if (status == MagickFalse)
                break;
        }
    }
    (void) CloseBlob(image);
    return(GetFirstImageInList(image));
}
Example #3
0
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%                                                                             %
%                                                                             %
%                                                                             %
%   R e a d I m a g e                                                         %
%                                                                             %
%                                                                             %
%                                                                             %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%  ReadImage() reads an image or image sequence from a file or file handle.
%  The method returns a NULL if there is a memory shortage or if the image
%  cannot be read.  On failure, a NULL image is returned and exception
%  describes the reason for the failure.
%
%  The format of the ReadImage method is:
%
%      Image *ReadImage(const ImageInfo *image_info,ExceptionInfo *exception)
%
%  A description of each parameter follows:
%
%    o image_info: Read the image defined by the file or filename members of
%      this structure.
%
%    o exception: return any errors or warnings in this structure.
%
*/
MagickExport Image *ReadImage(const ImageInfo *image_info,
  ExceptionInfo *exception)
{
  char
    filename[MaxTextExtent],
    magick[MaxTextExtent],
    magick_filename[MaxTextExtent];

  const char
    *value;

  const DelegateInfo
    *delegate_info;

  const MagickInfo
    *magick_info;

  ExceptionInfo
    *sans_exception;

  GeometryInfo
    geometry_info;

  Image
    *image,
    *next;

  ImageInfo
    *read_info;

  MagickStatusType
    flags,
    thread_support;

  PolicyDomain
    domain;

  PolicyRights
    rights;

  /*
    Determine image type from filename prefix or suffix (e.g. image.jpg).
  */
  assert(image_info != (ImageInfo *) NULL);
  assert(image_info->signature == MagickSignature);
  assert(image_info->filename != (char *) NULL);
  if (image_info->debug != MagickFalse)
    (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
      image_info->filename);
  assert(exception != (ExceptionInfo *) NULL);
  read_info=CloneImageInfo(image_info);
  (void) CopyMagickString(magick_filename,read_info->filename,MaxTextExtent);
  (void) SetImageInfo(read_info,0,exception);
  (void) CopyMagickString(filename,read_info->filename,MaxTextExtent);
  (void) CopyMagickString(magick,read_info->magick,MaxTextExtent);
  domain=CoderPolicyDomain;
  rights=ReadPolicyRights;
  if (IsRightsAuthorized(domain,rights,read_info->magick) == MagickFalse)
    {
      errno=EPERM;
      (void) ThrowMagickException(exception,GetMagickModule(),PolicyError,
        "NotAuthorized","`%s'",read_info->filename);
      return((Image *) NULL);
    }
  /*
    Call appropriate image reader based on image type.
  */
  sans_exception=AcquireExceptionInfo();
  magick_info=GetMagickInfo(read_info->magick,sans_exception);
  sans_exception=DestroyExceptionInfo(sans_exception);
  if (magick_info != (const MagickInfo *) NULL)
    {
      if (GetMagickEndianSupport(magick_info) == MagickFalse)
        read_info->endian=UndefinedEndian;
      else
        if ((image_info->endian == UndefinedEndian) &&
            (GetMagickRawSupport(magick_info) != MagickFalse))
          {
            size_t
              lsb_first;

            lsb_first=1;
            read_info->endian=(*(char *) &lsb_first) == 1 ? LSBEndian :
              MSBEndian;
         }
    }
  if ((magick_info != (const MagickInfo *) NULL) &&
      (GetMagickSeekableStream(magick_info) != MagickFalse))
    {
      MagickBooleanType
        status;

      image=AcquireImage(read_info,exception);
      (void) CopyMagickString(image->filename,read_info->filename,
        MaxTextExtent);
      status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception);
      if (status == MagickFalse)
        {
          read_info=DestroyImageInfo(read_info);
          image=DestroyImage(image);
          return((Image *) NULL);
        }
      if (IsBlobSeekable(image) == MagickFalse)
        {
          /*
            Coder requires a seekable stream.
          */
          *read_info->filename='\0';
          status=ImageToFile(image,read_info->filename,exception);
          if (status == MagickFalse)
            {
              (void) CloseBlob(image);
              read_info=DestroyImageInfo(read_info);
              image=DestroyImage(image);
              return((Image *) NULL);
            }
          read_info->temporary=MagickTrue;
        }
      (void) CloseBlob(image);
      image=DestroyImage(image);
    }
  image=NewImageList();
  if (constitute_semaphore == (SemaphoreInfo *) NULL)
    AcquireSemaphoreInfo(&constitute_semaphore);
  if ((magick_info != (const MagickInfo *) NULL) &&
      (GetImageDecoder(magick_info) != (DecodeImageHandler *) NULL))
    {
      thread_support=GetMagickThreadSupport(magick_info);
      if ((thread_support & DecoderThreadSupport) == 0)
        LockSemaphoreInfo(constitute_semaphore);
      image=GetImageDecoder(magick_info)(read_info,exception);
      if ((thread_support & DecoderThreadSupport) == 0)
        UnlockSemaphoreInfo(constitute_semaphore);
    }
  else
    {
      delegate_info=GetDelegateInfo(read_info->magick,(char *) NULL,exception);
      if (delegate_info == (const DelegateInfo *) NULL)
        {
          (void) ThrowMagickException(exception,GetMagickModule(),
            MissingDelegateError,"NoDecodeDelegateForThisImageFormat","`%s'",
            read_info->filename);
          if (read_info->temporary != MagickFalse)
            (void) RelinquishUniqueFileResource(read_info->filename);
          read_info=DestroyImageInfo(read_info);
          return((Image *) NULL);
        }
      /*
        Let our decoding delegate process the image.
      */
      image=AcquireImage(read_info,exception);
      if (image == (Image *) NULL)
        {
          read_info=DestroyImageInfo(read_info);
          return((Image *) NULL);
        }
      (void) CopyMagickString(image->filename,read_info->filename,
        MaxTextExtent);
      *read_info->filename='\0';
      if (GetDelegateThreadSupport(delegate_info) == MagickFalse)
        LockSemaphoreInfo(constitute_semaphore);
      (void) InvokeDelegate(read_info,image,read_info->magick,(char *) NULL,
        exception);
      if (GetDelegateThreadSupport(delegate_info) == MagickFalse)
        UnlockSemaphoreInfo(constitute_semaphore);
      image=DestroyImageList(image);
      read_info->temporary=MagickTrue;
      (void) SetImageInfo(read_info,0,exception);
      magick_info=GetMagickInfo(read_info->magick,exception);
      if ((magick_info == (const MagickInfo *) NULL) ||
          (GetImageDecoder(magick_info) == (DecodeImageHandler *) NULL))
        {
          if (IsPathAccessible(read_info->filename) != MagickFalse)
            (void) ThrowMagickException(exception,GetMagickModule(),
              MissingDelegateError,"NoDecodeDelegateForThisImageFormat","`%s'",
              read_info->filename);
          else
            ThrowFileException(exception,FileOpenError,"UnableToOpenFile",
              read_info->filename);
          read_info=DestroyImageInfo(read_info);
          return((Image *) NULL);
        }
      thread_support=GetMagickThreadSupport(magick_info);
      if ((thread_support & DecoderThreadSupport) == 0)
        LockSemaphoreInfo(constitute_semaphore);
      image=(Image *) (GetImageDecoder(magick_info))(read_info,exception);
      if ((thread_support & DecoderThreadSupport) == 0)
        UnlockSemaphoreInfo(constitute_semaphore);
    }
  if (read_info->temporary != MagickFalse)
    {
      (void) RelinquishUniqueFileResource(read_info->filename);
      read_info->temporary=MagickFalse;
      if (image != (Image *) NULL)
        (void) CopyMagickString(image->filename,filename,MaxTextExtent);
    }
  if (image == (Image *) NULL)
    {
      read_info=DestroyImageInfo(read_info);
      return(image);
    }
  if (exception->severity >= ErrorException)
    (void) LogMagickEvent(ExceptionEvent,GetMagickModule(),
      "Coder (%s) generated an image despite an error (%d), "
      "notify the developers",image->magick,exception->severity);
  if (IsBlobTemporary(image) != MagickFalse)
    (void) RelinquishUniqueFileResource(read_info->filename);
  if ((GetNextImageInList(image) != (Image *) NULL) &&
      (IsSceneGeometry(read_info->scenes,MagickFalse) != MagickFalse))
    {
      Image
        *clones;

      clones=CloneImages(image,read_info->scenes,exception);
      if (clones == (Image *) NULL)
        (void) ThrowMagickException(exception,GetMagickModule(),OptionError,
          "SubimageSpecificationReturnsNoImages","`%s'",read_info->filename);
      else
        {
          image=DestroyImageList(image);
          image=GetFirstImageInList(clones);
        }
    }
  if (GetBlobError(image) != MagickFalse)
    {
      ThrowFileException(exception,FileOpenError,
        "AnErrorHasOccurredReadingFromFile",read_info->filename);
      image=DestroyImageList(image);
      read_info=DestroyImageInfo(read_info);
      return((Image *) NULL);
    }
  for (next=image; next != (Image *) NULL; next=GetNextImageInList(next))
  {
    char
      magick_path[MaxTextExtent],
      *property,
      timestamp[MaxTextExtent];

    const char
      *option;

    const StringInfo
      *profile;

    next->taint=MagickFalse;
    GetPathComponent(magick_filename,MagickPath,magick_path);
    if (*magick_path == '\0')
      (void) CopyMagickString(next->magick,magick,MaxTextExtent);
    (void) CopyMagickString(next->magick_filename,magick_filename,
      MaxTextExtent);
    if (IsBlobTemporary(image) != MagickFalse)
      (void) CopyMagickString(next->filename,filename,MaxTextExtent);
    if (next->magick_columns == 0)
      next->magick_columns=next->columns;
    if (next->magick_rows == 0)
      next->magick_rows=next->rows;
    value=GetImageProperty(next,"tiff:Orientation",exception);
    if (value == (char *) NULL)
      value=GetImageProperty(next,"exif:Orientation",exception);
    if (value != (char *) NULL)
      {
        next->orientation=(OrientationType) StringToLong(value);
        (void) DeleteImageProperty(next,"tiff:Orientation");
        (void) DeleteImageProperty(next,"exif:Orientation");
      }
    value=GetImageProperty(next,"exif:XResolution",exception);
    if (value != (char *) NULL)
      {
        geometry_info.rho=next->resolution.x;
        geometry_info.sigma=1.0;
        flags=ParseGeometry(value,&geometry_info);
        if (geometry_info.sigma != 0)
          next->resolution.x=geometry_info.rho/geometry_info.sigma;
        (void) DeleteImageProperty(next,"exif:XResolution");
      }
    value=GetImageProperty(next,"exif:YResolution",exception);
    if (value != (char *) NULL)
      {
        geometry_info.rho=next->resolution.y;
        geometry_info.sigma=1.0;
        flags=ParseGeometry(value,&geometry_info);
        if (geometry_info.sigma != 0)
          next->resolution.y=geometry_info.rho/geometry_info.sigma;
        (void) DeleteImageProperty(next,"exif:YResolution");
      }
    value=GetImageProperty(next,"tiff:ResolutionUnit",exception);
    if (value == (char *) NULL)
      value=GetImageProperty(next,"exif:ResolutionUnit",exception);
    if (value != (char *) NULL)
      {
        next->units=(ResolutionType) (StringToLong(value)-1);
        (void) DeleteImageProperty(next,"exif:ResolutionUnit");
        (void) DeleteImageProperty(next,"tiff:ResolutionUnit");
      }
    if (next->page.width == 0)
      next->page.width=next->columns;
    if (next->page.height == 0)
      next->page.height=next->rows;
    option=GetImageOption(read_info,"caption");
    if (option != (const char *) NULL)
      {
        property=InterpretImageProperties(read_info,next,option,exception);
        (void) SetImageProperty(next,"caption",property,exception);
        property=DestroyString(property);
      }
    option=GetImageOption(read_info,"comment");
    if (option != (const char *) NULL)
      {
        property=InterpretImageProperties(read_info,next,option,exception);
        (void) SetImageProperty(next,"comment",property,exception);
        property=DestroyString(property);
      }
    option=GetImageOption(read_info,"label");
    if (option != (const char *) NULL)
      {
        property=InterpretImageProperties(read_info,next,option,exception);
        (void) SetImageProperty(next,"label",property,exception);
        property=DestroyString(property);
      }
    if (LocaleCompare(next->magick,"TEXT") == 0)
      (void) ParseAbsoluteGeometry("0x0+0+0",&next->page);
    if ((read_info->extract != (char *) NULL) &&
        (read_info->stream == (StreamHandler) NULL))
      {
        RectangleInfo
          geometry;

        flags=ParseAbsoluteGeometry(read_info->extract,&geometry);
        if ((next->columns != geometry.width) ||
            (next->rows != geometry.height))
          {
            if (((flags & XValue) != 0) || ((flags & YValue) != 0))
              {
                Image
                  *crop_image;

                crop_image=CropImage(next,&geometry,exception);
                if (crop_image != (Image *) NULL)
                  ReplaceImageInList(&next,crop_image);
              }
            else
              if (((flags & WidthValue) != 0) || ((flags & HeightValue) != 0))
                {
                  Image
                    *size_image;

                  flags=ParseRegionGeometry(next,read_info->extract,&geometry,
                    exception);
                  size_image=ResizeImage(next,geometry.width,geometry.height,
                    next->filter,next->blur,exception);
                  if (size_image != (Image *) NULL)
                    ReplaceImageInList(&next,size_image);
                }
          }
      }
    profile=GetImageProfile(next,"icc");
    if (profile == (const StringInfo *) NULL)
      profile=GetImageProfile(next,"icm");
    profile=GetImageProfile(next,"iptc");
    if (profile == (const StringInfo *) NULL)
      profile=GetImageProfile(next,"8bim");
    (void) FormatMagickTime(GetBlobProperties(next)->st_mtime,MaxTextExtent,
      timestamp);
    (void) SetImageProperty(next,"date:modify",timestamp,exception);
    (void) FormatMagickTime(GetBlobProperties(next)->st_ctime,MaxTextExtent,
      timestamp);
    (void) SetImageProperty(next,"date:create",timestamp,exception);
    option=GetImageOption(image_info,"delay");
    if (option != (const char *) NULL)
      {
        GeometryInfo
          geometry_info;

        flags=ParseGeometry(option,&geometry_info);
        if ((flags & GreaterValue) != 0)
          {
            if (next->delay > (size_t) floor(geometry_info.rho+0.5))
              next->delay=(size_t) floor(geometry_info.rho+0.5);
          }
        else
          if ((flags & LessValue) != 0)
            {
              if (next->delay < (size_t) floor(geometry_info.rho+0.5))
                next->ticks_per_second=(ssize_t) floor(geometry_info.sigma+0.5);
            }
          else
            next->delay=(size_t) floor(geometry_info.rho+0.5);
        if ((flags & SigmaValue) != 0)
          next->ticks_per_second=(ssize_t) floor(geometry_info.sigma+0.5);
      }
    option=GetImageOption(image_info,"dispose");
    if (option != (const char *) NULL)
      next->dispose=(DisposeType) ParseCommandOption(MagickDisposeOptions,
        MagickFalse,option);
    if (read_info->verbose != MagickFalse)
      (void) IdentifyImage(next,stderr,MagickFalse,exception);
    image=next;
  }
  read_info=DestroyImageInfo(read_info);
  return(GetFirstImageInList(image));
}
Example #4
0
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%                                                                             %
%                                                                             %
%                                                                             %
%   R e a d C A P T I O N I m a g e                                           %
%                                                                             %
%                                                                             %
%                                                                             %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%  ReadCAPTIONImage() reads a CAPTION 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 ReadCAPTIONImage method is:
%
%      Image *ReadCAPTIONImage(const ImageInfo *image_info,
%        ExceptionInfo *exception)
%
%  A description of each parameter follows:
%
%    o image_info: the image info.
%
%    o exception: return any errors or warnings in this structure.
%
*/
static Image *ReadCAPTIONImage(const ImageInfo *image_info,
  ExceptionInfo *exception)
{
  char
    *caption,
    geometry[MaxTextExtent],
    *property,
    *text;

  const char
    *gravity,
    *option;

  DrawInfo
    *draw_info;

  Image
    *image;

  MagickBooleanType
    split,
    status;

  register ssize_t
    i;

  size_t
    height,
    width;

  TypeMetric
    metrics;

  /*
    Initialize Image structure.
  */
  assert(image_info != (const ImageInfo *) NULL);
  assert(image_info->signature == MagickSignature);
  if (image_info->debug != MagickFalse)
    (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
      image_info->filename);
  assert(exception != (ExceptionInfo *) NULL);
  assert(exception->signature == MagickSignature);
  image=AcquireImage(image_info);
  (void) ResetImagePage(image,"0x0+0+0");
  /*
    Format caption.
  */
  option=GetImageOption(image_info,"filename");
  if (option == (const char *) NULL)
    property=InterpretImageProperties(image_info,image,image_info->filename);
  else
    if (LocaleNCompare(option,"caption:",8) == 0)
      property=InterpretImageProperties(image_info,image,option+8);
    else
      property=InterpretImageProperties(image_info,image,option);
  (void) SetImageProperty(image,"caption",property);
  property=DestroyString(property);
  caption=ConstantString(GetImageProperty(image,"caption"));
  draw_info=CloneDrawInfo(image_info,(DrawInfo *) NULL);
  (void) CloneString(&draw_info->text,caption);
  gravity=GetImageOption(image_info,"gravity");
  if (gravity != (char *) NULL)
    draw_info->gravity=(GravityType) ParseCommandOption(MagickGravityOptions,
      MagickFalse,gravity);
  split=MagickFalse;
  status=MagickTrue;
  if (image->columns == 0)
    {
      text=AcquireString(caption);
      i=FormatMagickCaption(image,draw_info,split,&metrics,&text);
      (void) CloneString(&draw_info->text,text);
      text=DestroyString(text);
      (void) FormatLocaleString(geometry,MaxTextExtent,"%+g%+g",
        -metrics.bounds.x1,metrics.ascent);
      if (draw_info->gravity == UndefinedGravity)
        (void) CloneString(&draw_info->geometry,geometry);
      status=GetMultilineTypeMetrics(image,draw_info,&metrics);
      width=(size_t) floor(metrics.width+draw_info->stroke_width+0.5);
      image->columns=width;
    }
  if (image->rows == 0)
    {
      split=MagickTrue;
      text=AcquireString(caption);
      i=FormatMagickCaption(image,draw_info,split,&metrics,&text);
      (void) CloneString(&draw_info->text,text);
      text=DestroyString(text);
      (void) FormatLocaleString(geometry,MaxTextExtent,"%+g%+g",
        -metrics.bounds.x1,metrics.ascent);
      if (draw_info->gravity == UndefinedGravity)
        (void) CloneString(&draw_info->geometry,geometry);
      status=GetMultilineTypeMetrics(image,draw_info,&metrics);
      image->rows=(size_t) ((i+1)*(metrics.ascent-metrics.descent+
        draw_info->interline_spacing+draw_info->stroke_width)+0.5);
    }
  if (status != MagickFalse)
    status=SetImageExtent(image,image->columns,image->rows);
  if (status == MagickFalse)
    { 
      draw_info=DestroyDrawInfo(draw_info);
      InheritException(exception,&image->exception);
      return(DestroyImageList(image));
    }
  if (SetImageBackgroundColor(image) == MagickFalse)
    {
      draw_info=DestroyDrawInfo(draw_info);
      InheritException(exception,&image->exception);
      image=DestroyImageList(image);
      return((Image *) NULL);
    }
  if (fabs(image_info->pointsize) < MagickEpsilon)
    {
      double
        high,
        low;

      /*
        Auto fit text into bounding box.
      */
      for ( ; ; draw_info->pointsize*=2.0)
      {
        text=AcquireString(caption);
        i=FormatMagickCaption(image,draw_info,split,&metrics,&text);
        (void) CloneString(&draw_info->text,text);
        text=DestroyString(text);
        (void) FormatLocaleString(geometry,MaxTextExtent,"%+g%+g",
          -metrics.bounds.x1,metrics.ascent);
        if (draw_info->gravity == UndefinedGravity)
          (void) CloneString(&draw_info->geometry,geometry);
        status=GetMultilineTypeMetrics(image,draw_info,&metrics);
        (void) status;
        width=(size_t) floor(metrics.width+draw_info->stroke_width+0.5);
        height=(size_t) floor(metrics.height+draw_info->stroke_width+0.5);
        if ((image->columns != 0) && (image->rows != 0))
          {
            if ((width >= image->columns) && (height >= image->rows))
              break;
          }
        else
          if (((image->columns != 0) && (width >= image->columns)) ||
              ((image->rows != 0) && (height >= image->rows)))
            break;
      }
      high=draw_info->pointsize;
      for (low=1.0; (high-low) > 0.5; )
      {
        draw_info->pointsize=(low+high)/2.0;
        text=AcquireString(caption);
        i=FormatMagickCaption(image,draw_info,split,&metrics,&text);
        (void) CloneString(&draw_info->text,text);
        text=DestroyString(text);
        (void) FormatLocaleString(geometry,MaxTextExtent,"%+g%+g",
          -metrics.bounds.x1,metrics.ascent);
        if (draw_info->gravity == UndefinedGravity)
          (void) CloneString(&draw_info->geometry,geometry);
        (void) GetMultilineTypeMetrics(image,draw_info,&metrics);
        width=(size_t) floor(metrics.width+draw_info->stroke_width+0.5);
        height=(size_t) floor(metrics.height+draw_info->stroke_width+0.5);
        if ((image->columns != 0) && (image->rows != 0))
          {
            if ((width < image->columns) && (height < image->rows))
              low=draw_info->pointsize+0.5;
            else
              high=draw_info->pointsize-0.5;
          }
        else
          if (((image->columns != 0) && (width < image->columns)) ||
              ((image->rows != 0) && (height < image->rows)))
            low=draw_info->pointsize+0.5;
          else
            high=draw_info->pointsize-0.5;
      }
      draw_info->pointsize=(low+high)/2.0-0.5;
    }
  /*
    Draw caption.
  */
  i=FormatMagickCaption(image,draw_info,split,&metrics,&caption);
  (void) CloneString(&draw_info->text,caption);
  (void) FormatLocaleString(geometry,MaxTextExtent,"%+g%+g",MagickMax(
    draw_info->direction == RightToLeftDirection ? image->columns-
    metrics.bounds.x2 : -metrics.bounds.x1,0.0),draw_info->gravity ==
    UndefinedGravity ? metrics.ascent : 0.0);
  draw_info->geometry=AcquireString(geometry);
  status=AnnotateImage(image,draw_info);
  if (image_info->pointsize == 0.0)
    { 
      char
        pointsize[MaxTextExtent];
      
      (void) FormatLocaleString(pointsize,MaxTextExtent,"%.20g",
        draw_info->pointsize);
      (void) SetImageProperty(image,"caption:pointsize",pointsize);
    }
  draw_info=DestroyDrawInfo(draw_info);
  caption=DestroyString(caption);
  if (status == MagickFalse)
    {
      image=DestroyImageList(image);
      return((Image *) NULL);
    }
  return(GetFirstImageInList(image));
}
Example #5
0
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%                                                                             %
%                                                                             %
%                                                                             %
%   a n a l y z e I m a g e                                                   %
%                                                                             %
%                                                                             %
%                                                                             %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%  analyzeImage() computes the brightness and saturation mean,  standard
%  deviation, kurtosis and skewness and stores these values as attributes 
%  of the image.
%
%  The format of the analyzeImage method is:
%
%      size_t analyzeImage(Image *images,const int argc,
%        char **argv,ExceptionInfo *exception)
%
%  A description of each parameter follows:
%
%    o image: the address of a structure of type Image.
%
%    o argc: Specifies a pointer to an integer describing the number of
%      elements in the argument vector.
%
%    o argv: Specifies a pointer to a text array containing the command line
%      arguments.
%
%    o exception: return any errors or warnings in this structure.
%
*/
ModuleExport size_t analyzeImage(Image **images,const int argc,
  const char **argv,ExceptionInfo *exception)
{
  char
    text[MaxTextExtent];

  double
    area,
    brightness,
    brightness_mean,
    brightness_standard_deviation,
    brightness_kurtosis,
    brightness_skewness,
    brightness_sum_x,
    brightness_sum_x2,
    brightness_sum_x3,
    brightness_sum_x4,
    hue,
    saturation,
    saturation_mean,
    saturation_standard_deviation,
    saturation_kurtosis,
    saturation_skewness,
    saturation_sum_x,
    saturation_sum_x2,
    saturation_sum_x3,
    saturation_sum_x4;

  Image
    *image;

  assert(images != (Image **) NULL);
  assert(*images != (Image *) NULL);
  assert((*images)->signature == MagickSignature);
  (void) argc;
  (void) argv;
  image=(*images);
  for ( ; image != (Image *) NULL; image=GetNextImageInList(image))
  {
    CacheView
      *image_view;

    MagickBooleanType
      status;

    ssize_t
      y;

    brightness_sum_x=0.0;
    brightness_sum_x2=0.0;
    brightness_sum_x3=0.0;
    brightness_sum_x4=0.0;
    brightness_mean=0.0;
    brightness_standard_deviation=0.0;
    brightness_kurtosis=0.0;
    brightness_skewness=0.0;
    saturation_sum_x=0.0;
    saturation_sum_x2=0.0;
    saturation_sum_x3=0.0;
    saturation_sum_x4=0.0;
    saturation_mean=0.0;
    saturation_standard_deviation=0.0;
    saturation_kurtosis=0.0;
    saturation_skewness=0.0;
    area=0.0;
    status=MagickTrue;
    image_view=AcquireCacheView(image);
#if defined(MAGICKCORE_OPENMP_SUPPORT)
    #pragma omp parallel for schedule(dynamic,4) shared(status)
#endif
    for (y=0; y < (ssize_t) image->rows; y++)
    {
      register const PixelPacket
        *p;

      register ssize_t
        x;

      if (status == MagickFalse)
        continue;
      p=GetCacheViewVirtualPixels(image_view,0,y,image->columns,1,exception);
      if (p == (const PixelPacket *) NULL)
        {
          status=MagickFalse;
          continue;
        }
      for (x=0; x < (ssize_t) image->columns; x++)
      {
        ConvertRGBToHSB(GetRedPixelComponent(p),GetGreenPixelComponent(p),
          GetBluePixelComponent(p),&hue,&saturation,&brightness);
        brightness*=QuantumRange;
        brightness_sum_x+=brightness;
        brightness_sum_x2+=brightness*brightness;
        brightness_sum_x3+=brightness*brightness*brightness;
        brightness_sum_x4+=brightness*brightness*brightness*brightness;
        saturation*=QuantumRange;
        saturation_sum_x+=saturation;
        saturation_sum_x2+=saturation*saturation;
        saturation_sum_x3+=saturation*saturation*saturation;
        saturation_sum_x4+=saturation*saturation*saturation*saturation;
        area++;
        p++;
      }
    }
    image_view=DestroyCacheView(image_view);
    if (area <= 0.0)
      break;
    brightness_mean=brightness_sum_x/area;
    (void) FormatMagickString(text,MaxTextExtent,"%g",brightness_mean);
    (void) SetImageProperty(image,"filter:brightness:mean",text);
    brightness_standard_deviation=sqrt(brightness_sum_x2/area-(brightness_sum_x/
      area*brightness_sum_x/area));
    (void) FormatMagickString(text,MaxTextExtent,"%g",
      brightness_standard_deviation);
    (void) SetImageProperty(image,"filter:brightness:standard-deviation",text);
    if (brightness_standard_deviation != 0)
      brightness_kurtosis=(brightness_sum_x4/area-4.0*brightness_mean*
        brightness_sum_x3/area+6.0*brightness_mean*brightness_mean*
        brightness_sum_x2/area-3.0*brightness_mean*brightness_mean*
        brightness_mean*brightness_mean)/(brightness_standard_deviation*
        brightness_standard_deviation*brightness_standard_deviation*
        brightness_standard_deviation)-3.0;
    (void) FormatMagickString(text,MaxTextExtent,"%g",brightness_kurtosis);
    (void) SetImageProperty(image,"filter:brightness:kurtosis",text);
    if (brightness_standard_deviation != 0)
      brightness_skewness=(brightness_sum_x3/area-3.0*brightness_mean*
        brightness_sum_x2/area+2.0*brightness_mean*brightness_mean*
        brightness_mean)/(brightness_standard_deviation*
        brightness_standard_deviation*brightness_standard_deviation);
    (void) FormatMagickString(text,MaxTextExtent,"%g",brightness_skewness);
    (void) SetImageProperty(image,"filter:brightness:skewness",text);
    saturation_mean=saturation_sum_x/area;
    (void) FormatMagickString(text,MaxTextExtent,"%g",saturation_mean);
    (void) SetImageProperty(image,"filter:saturation:mean",text);
    saturation_standard_deviation=sqrt(saturation_sum_x2/area-(saturation_sum_x/
      area*saturation_sum_x/area));
    (void) FormatMagickString(text,MaxTextExtent,"%g",
      saturation_standard_deviation);
    (void) SetImageProperty(image,"filter:saturation:standard-deviation",text);
    if (saturation_standard_deviation != 0)
      saturation_kurtosis=(saturation_sum_x4/area-4.0*saturation_mean*
        saturation_sum_x3/area+6.0*saturation_mean*saturation_mean*
        saturation_sum_x2/area-3.0*saturation_mean*saturation_mean*
        saturation_mean*saturation_mean)/(saturation_standard_deviation*
        saturation_standard_deviation*saturation_standard_deviation*
        saturation_standard_deviation)-3.0;
    (void) FormatMagickString(text,MaxTextExtent,"%g",saturation_kurtosis);
    (void) SetImageProperty(image,"filter:saturation:kurtosis",text);
    if (saturation_standard_deviation != 0)
      saturation_skewness=(saturation_sum_x3/area-3.0*saturation_mean*
        saturation_sum_x2/area+2.0*saturation_mean*saturation_mean*
        saturation_mean)/(saturation_standard_deviation*
        saturation_standard_deviation*saturation_standard_deviation);
    (void) FormatMagickString(text,MaxTextExtent,"%g",saturation_skewness);
    (void) SetImageProperty(image,"filter:saturation:skewness",text);
  }
  return(MagickImageFilterSignature);
}
Example #6
0
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%                                                                             %
%                                                                             %
%                                                                             %
%   R e a d R L A I m a g e                                                   %
%                                                                             %
%                                                                             %
%                                                                             %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%  ReadRLAImage() reads a run-length encoded Wavefront RLA image file
%  and returns it.  It allocates the memory necessary for the new Image
%  structure and returns a pointer to the new image.
%
%  Note:  This module was contributed by Lester Vecsey ([email protected]).
%
%  The format of the ReadRLAImage method is:
%
%      Image *ReadRLAImage(const ImageInfo *image_info,ExceptionInfo *exception)
%
%  A description of each parameter follows:
%
%    o image_info: the image info.
%
%    o exception: return any errors or warnings in this structure.
%
*/
static Image *ReadRLAImage(const ImageInfo *image_info,ExceptionInfo *exception)
{
  typedef struct _WindowFrame
  {
    short
      left,
      right,
      bottom,
      top;
  } WindowFrame;

  typedef struct _RLAInfo
  {
    WindowFrame
      window,
      active_window;

    short
      frame,
      storage_type,
      number_channels,
      number_matte_channels,
      number_auxiliary_channels,
      revision;

    char
      gamma[16+1],
      red_primary[24+1],
      green_primary[24+1],
      blue_primary[24+1],
      white_point[24+1];

    int
      job_number;

    char
      name[128+1],
      description[128+1],
      program[64+1],
      machine[32+1],
      user[32+1],
      date[20+1],
      aspect[24+1],
      aspect_ratio[8+1],
      chan[32+1];

    short
      field;

    char
      time[12],
      filter[32];

    short
      bits_per_channel,
      matte_type,
      matte_bits,
      auxiliary_type,
      auxiliary_bits;

    char
      auxiliary[32+1],
      space[36+1];

    int
      next;
  } RLAInfo;

  Image
    *image;

  int
    channel,
    length,
    runlength;

  MagickBooleanType
    status;

  MagickOffsetType
    offset,
    *scanlines;

  register ssize_t
    i,
    x;

  register Quantum
    *q;

  ssize_t
    count,
    y;

  RLAInfo
    rla_info;

  unsigned char
    byte;

  /*
    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);
    }
  (void) ResetMagickMemory(&rla_info,0,sizeof(rla_info));
  rla_info.window.left=(short) ReadBlobMSBShort(image);
  rla_info.window.right=(short) ReadBlobMSBShort(image);
  rla_info.window.bottom=(short) ReadBlobMSBShort(image);
  rla_info.window.top=(short) ReadBlobMSBShort(image);
  rla_info.active_window.left=(short) ReadBlobMSBShort(image);
  rla_info.active_window.right=(short) ReadBlobMSBShort(image);
  rla_info.active_window.bottom=(short) ReadBlobMSBShort(image);
  rla_info.active_window.top=(short) ReadBlobMSBShort(image);
  rla_info.frame=(short) ReadBlobMSBShort(image);
  rla_info.storage_type=(short) ReadBlobMSBShort(image);
  rla_info.number_channels=(short) ReadBlobMSBShort(image);
  rla_info.number_matte_channels=(short) ReadBlobMSBShort(image);
  if (rla_info.number_channels == 0)
    rla_info.number_channels=3;
  rla_info.number_channels+=rla_info.number_matte_channels;
  rla_info.number_auxiliary_channels=(short) ReadBlobMSBShort(image);
  rla_info.revision=(short) ReadBlobMSBShort(image);
  count=ReadBlob(image,16,(unsigned char *) rla_info.gamma);
  count=ReadBlob(image,24,(unsigned char *) rla_info.red_primary);
  count=ReadBlob(image,24,(unsigned char *) rla_info.green_primary);
  count=ReadBlob(image,24,(unsigned char *) rla_info.blue_primary);
  count=ReadBlob(image,24,(unsigned char *) rla_info.white_point);
  rla_info.job_number=ReadBlobMSBSignedLong(image);
  count=ReadBlob(image,128,(unsigned char *) rla_info.name);
  count=ReadBlob(image,128,(unsigned char *) rla_info.description);
  rla_info.description[127]='\0';
  count=ReadBlob(image,64,(unsigned char *) rla_info.program);
  count=ReadBlob(image,32,(unsigned char *) rla_info.machine);
  count=ReadBlob(image,32,(unsigned char *) rla_info.user);
  count=ReadBlob(image,20,(unsigned char *) rla_info.date);
  count=ReadBlob(image,24,(unsigned char *) rla_info.aspect);
  count=ReadBlob(image,8,(unsigned char *) rla_info.aspect_ratio);
  count=ReadBlob(image,32,(unsigned char *) rla_info.chan);
  rla_info.field=(short) ReadBlobMSBShort(image);
  count=ReadBlob(image,12,(unsigned char *) rla_info.time);
  count=ReadBlob(image,32,(unsigned char *) rla_info.filter);
  rla_info.bits_per_channel=(short) ReadBlobMSBShort(image);
  rla_info.matte_type=(short) ReadBlobMSBShort(image);
  rla_info.matte_bits=(short) ReadBlobMSBShort(image);
  rla_info.auxiliary_type=(short) ReadBlobMSBShort(image);
  rla_info.auxiliary_bits=(short) ReadBlobMSBShort(image);
  count=ReadBlob(image,32,(unsigned char *) rla_info.auxiliary);
  count=ReadBlob(image,36,(unsigned char *) rla_info.space);
  if ((size_t) count != 36)
    ThrowReaderException(CorruptImageError,"UnableToReadImageData");
  rla_info.next=ReadBlobMSBSignedLong(image);
  /*
    Initialize image structure.
  */
  image->alpha_trait=rla_info.number_matte_channels != 0 ? BlendPixelTrait : 
    UndefinedPixelTrait;
  image->columns=(size_t) (rla_info.active_window.right-
    rla_info.active_window.left+1);
  image->rows=(size_t) (rla_info.active_window.top-
    rla_info.active_window.bottom+1);
  if (image_info->ping != MagickFalse)
    {
      (void) CloseBlob(image);
      return(GetFirstImageInList(image));
    }
  status=SetImageExtent(image,image->columns,image->rows,exception);
  if (status == MagickFalse)
    return(DestroyImageList(image));
  scanlines=(MagickOffsetType *) AcquireQuantumMemory(image->rows,
    sizeof(*scanlines));
  if (scanlines == (MagickOffsetType *) NULL)
    ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
  if (*rla_info.description != '\0')
    (void) SetImageProperty(image,"comment",rla_info.description,exception);
  /*
    Read offsets to each scanline data.
  */
  for (i=0; i < (ssize_t) image->rows; i++)
    scanlines[i]=(MagickOffsetType) ReadBlobMSBSignedLong(image);
  /*
    Read image data.
  */
  x=0;
  for (y=0; y < (ssize_t) image->rows; y++)
  {
    offset=SeekBlob(image,scanlines[image->rows-y-1],SEEK_SET);
    if (offset < 0)
      ThrowReaderException(CorruptImageError,"ImproperImageHeader");
    for (channel=0; channel < (int) rla_info.number_channels; channel++)
    {
      length=ReadBlobMSBSignedShort(image);
      while (length > 0)
      {
        byte=(unsigned char) ReadBlobByte(image);
        runlength=byte;
        if (byte > 127)
          runlength=byte-256;
        length--;
        if (length == 0)
          break;
        if (runlength < 0)
          {
            while (runlength < 0)
            {
              q=GetAuthenticPixels(image,(ssize_t) (x % image->columns),
                (ssize_t) (y % image->rows),1,1,exception);
              if (q == (Quantum *) NULL)
                break;
              byte=(unsigned char) ReadBlobByte(image);
              length--;
              switch (channel)
              {
                case 0:
                {
                  SetPixelRed(image,ScaleCharToQuantum(byte),q);
                  break;
                }
                case 1:
                {
                  SetPixelGreen(image,ScaleCharToQuantum(byte),q);
                  break;
                }
                case 2:
                {
                  SetPixelBlue(image,ScaleCharToQuantum(byte),q);
                  break;
                }
                case 3:
                default:
                {
                  SetPixelAlpha(image,ScaleCharToQuantum(byte),q);
                  break;
                }
              }
              if (SyncAuthenticPixels(image,exception) == MagickFalse)
                break;
              x++;
              runlength++;
            }
            continue;
          }
        byte=(unsigned char) ReadBlobByte(image);
        length--;
        runlength++;
        do
        {
          q=GetAuthenticPixels(image,(ssize_t) (x % image->columns),
            (ssize_t) (y % image->rows),1,1,exception);
          if (q == (Quantum *) NULL)
            break;
          switch (channel)
          {
            case 0:
            {
              SetPixelRed(image,ScaleCharToQuantum(byte),q);
              break;
            }
            case 1:
            {
              SetPixelGreen(image,ScaleCharToQuantum(byte),q);
              break;
            }
            case 2:
            {
              SetPixelBlue(image,ScaleCharToQuantum(byte),q);
              break;
            }
            case 3:
            default:
            {
              SetPixelAlpha(image,ScaleCharToQuantum(byte),q);
              break;
            }
          }
          if (SyncAuthenticPixels(image,exception) == MagickFalse)
            break;
          x++;
          runlength--;
        }
        while (runlength > 0);
      }
    }
    status=SetImageProgress(image,LoadImageTag,(MagickOffsetType) y,
      image->rows);
    if (status == MagickFalse)
      break;
  }
  if (EOFBlob(image) != MagickFalse)
    ThrowFileException(exception,CorruptImageError,"UnexpectedEndOfFile",
      image->filename);
  scanlines=(MagickOffsetType *) RelinquishMagickMemory(scanlines);
  (void) CloseBlob(image);
  return(GetFirstImageInList(image));
}
Example #7
0
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%                                                                             %
%                                                                             %
%                                                                             %
%   R e a d R L E I m a g e                                                   %
%                                                                             %
%                                                                             %
%                                                                             %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%  ReadRLEImage() reads a run-length encoded Utah Raster Toolkit
%  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 ReadRLEImage method is:
%
%      Image *ReadRLEImage(const ImageInfo *image_info,ExceptionInfo *exception)
%
%  A description of each parameter follows:
%
%    o image_info: the image info.
%
%    o exception: return any errors or warnings in this structure.
%
%
*/
static Image *ReadRLEImage(const ImageInfo *image_info,ExceptionInfo *exception)
{
#define SkipLinesOp  0x01
#define SetColorOp  0x02
#define SkipPixelsOp  0x03
#define ByteDataOp  0x05
#define RunDataOp  0x06
#define EOFOp  0x07

  char
    magick[12];

  Image
    *image;

  int
    opcode,
    operand,
    status;

  MagickStatusType
    flags;

  MagickSizeType
    number_pixels;

  register IndexPacket
    *indexes;

  register ssize_t
    x;

  register PixelPacket
    *q;

  register ssize_t
    i;

  register unsigned char
    *p;

  size_t
    bits_per_pixel,
    map_length,
    number_colormaps,
    number_planes,
    one;

  ssize_t
    count,
    y;

  unsigned char
    background_color[256],
    *colormap,
    pixel,
    plane,
    *rle_pixels;

  /*
    Open image file.
  */
  assert(image_info != (const ImageInfo *) NULL);
  assert(image_info->signature == MagickSignature);
  if (image_info->debug != MagickFalse)
    (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
      image_info->filename);
  assert(exception != (ExceptionInfo *) NULL);
  assert(exception->signature == MagickSignature);
  image=AcquireImage(image_info);
  status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception);
  if (status == MagickFalse)
    {
      image=DestroyImageList(image);
      return((Image *) NULL);
    }
  /*
    Determine if this a RLE file.
  */
  count=ReadBlob(image,2,(unsigned char *) magick);
  if ((count == 0) || (memcmp(magick,"\122\314",2) != 0))
    ThrowReaderException(CorruptImageError,"ImproperImageHeader");
  do
  {
    /*
      Read image header.
    */
    (void) ReadBlobLSBShort(image);
    (void) ReadBlobLSBShort(image);
    image->columns=ReadBlobLSBShort(image);
    image->rows=ReadBlobLSBShort(image);
    flags=(MagickStatusType) ReadBlobByte(image);
    image->matte=flags & 0x04 ? MagickTrue : MagickFalse;
    number_planes=1UL*ReadBlobByte(image);
    bits_per_pixel=1UL*ReadBlobByte(image);
    number_colormaps=1UL*ReadBlobByte(image);
    one=1;
    map_length=one << ReadBlobByte(image);
    if ((number_planes == 0) || (number_planes == 2) || (bits_per_pixel != 8) ||
        (image->columns == 0))
      ThrowReaderException(CorruptImageError,"ImproperImageHeader");
    if (flags & 0x02)
      {
        /*
          No background color-- initialize to black.
        */
        for (i=0; i < (ssize_t) number_planes; i++)
          background_color[i]=0;
        (void) ReadBlobByte(image);
      }
    else
      {
        /*
          Initialize background color.
        */
        p=background_color;
        for (i=0; i < (ssize_t) number_planes; i++)
          *p++=(unsigned char) ReadBlobByte(image);
      }
    if ((number_planes & 0x01) == 0)
      (void) ReadBlobByte(image);
    colormap=(unsigned char *) NULL;
    if (number_colormaps != 0)
      {
        /*
          Read image colormaps.
        */
        colormap=(unsigned char *) AcquireQuantumMemory(number_colormaps,
          map_length*sizeof(*colormap));
        if (colormap == (unsigned char *) NULL)
          ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
        p=colormap;
        for (i=0; i < (ssize_t) number_colormaps; i++)
          for (x=0; x < (ssize_t) map_length; x++)
            *p++=(unsigned char) ScaleShortToQuantum(ReadBlobLSBShort(image));
      }
    if ((flags & 0x08) != 0)
      {
        char
          *comment;

        size_t
          length;

        /*
          Read image comment.
        */
        length=ReadBlobLSBShort(image);
        if (length != 0)
          {
            comment=(char *) AcquireQuantumMemory(length,sizeof(*comment));
            if (comment == (char *) NULL)
              ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
            count=ReadBlob(image,length-1,(unsigned char *) comment);
            comment[length-1]='\0';
            (void) SetImageProperty(image,"comment",comment);
            comment=DestroyString(comment);
            if ((length & 0x01) == 0)
              (void) ReadBlobByte(image);
          }
      }
    if ((image_info->ping != MagickFalse) && (image_info->number_scenes != 0))
      if (image->scene >= (image_info->scene+image_info->number_scenes-1))
        break;
    /*
      Allocate RLE pixels.
    */
    if (image->matte != MagickFalse)
      number_planes++;
    number_pixels=(MagickSizeType) image->columns*image->rows;
    if ((number_pixels*number_planes) != (size_t) (number_pixels*number_planes))
      ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
    rle_pixels=(unsigned char *) AcquireQuantumMemory(image->columns,
      image->rows*number_planes*sizeof(*rle_pixels));
    if (rle_pixels == (unsigned char *) NULL)
      ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
    if ((flags & 0x01) && !(flags & 0x02))
      {
        ssize_t
          j;

        /*
          Set background color.
        */
        p=rle_pixels;
        for (i=0; i < (ssize_t) number_pixels; i++)
        {
          if (image->matte == MagickFalse)
            for (j=0; j < (ssize_t) number_planes; j++)
              *p++=background_color[j];
          else
            {
              for (j=0; j < (ssize_t) (number_planes-1); j++)
                *p++=background_color[j];
              *p++=0;  /* initialize matte channel */
            }
        }
      }
    /*
      Read runlength-encoded image.
    */
    plane=0;
    x=0;
    y=0;
    opcode=ReadBlobByte(image);
    do
    {
      switch (opcode & 0x3f)
      {
        case SkipLinesOp:
        {
          operand=ReadBlobByte(image);
          if (opcode & 0x40)
            operand=(int) ReadBlobLSBShort(image);
          x=0;
          y+=operand;
          break;
        }
        case SetColorOp:
        {
          operand=ReadBlobByte(image);
          plane=(unsigned char) operand;
          if (plane == 255)
            plane=(unsigned char) (number_planes-1);
          x=0;
          break;
        }
        case SkipPixelsOp:
        {
          operand=ReadBlobByte(image);
          if (opcode & 0x40)
            operand=(int) ReadBlobLSBShort(image);
          x+=operand;
          break;
        }
        case ByteDataOp:
        {
          operand=ReadBlobByte(image);
          if (opcode & 0x40)
            operand=(int) ReadBlobLSBShort(image);
          p=rle_pixels+((image->rows-y-1)*image->columns*number_planes)+
            x*number_planes+plane;
          operand++;
          for (i=0; i < (ssize_t) operand; i++)
          {
            pixel=(unsigned char) ReadBlobByte(image);
            if ((y < (ssize_t) image->rows) &&
                ((x+i) < (ssize_t) image->columns))
              *p=pixel;
            p+=number_planes;
          }
          if (operand & 0x01)
            (void) ReadBlobByte(image);
          x+=operand;
          break;
        }
        case RunDataOp:
        {
          operand=ReadBlobByte(image);
          if (opcode & 0x40)
            operand=(int) ReadBlobLSBShort(image);
          pixel=(unsigned char) ReadBlobByte(image);
          (void) ReadBlobByte(image);
          operand++;
          p=rle_pixels+((image->rows-y-1)*image->columns*number_planes)+
            x*number_planes+plane;
          for (i=0; i < (ssize_t) operand; i++)
          {
            if ((y < (ssize_t) image->rows) &&
                ((x+i) < (ssize_t) image->columns))
              *p=pixel;
            p+=number_planes;
          }
          x+=operand;
          break;
        }
        default:
          break;
      }
      opcode=ReadBlobByte(image);
    } while (((opcode & 0x3f) != EOFOp) && (opcode != EOF));
    if (number_colormaps != 0)
      {
        MagickStatusType
          mask;

        /*
          Apply colormap affineation to image.
        */
        mask=(MagickStatusType) (map_length-1);
        p=rle_pixels;
        if (number_colormaps == 1)
          for (i=0; i < (ssize_t) number_pixels; i++)
          {
            *p=colormap[*p & mask];
            p++;
          }
        else
          if ((number_planes >= 3) && (number_colormaps >= 3))
            for (i=0; i < (ssize_t) number_pixels; i++)
              for (x=0; x < (ssize_t) number_planes; x++)
              {
                *p=colormap[x*map_length+(*p & mask)];
                p++;
              }
      }
    /*
      Initialize image structure.
    */
    if (number_planes >= 3)
      {
        /*
          Convert raster image to DirectClass pixel packets.
        */
        p=rle_pixels;
        for (y=0; y < (ssize_t) image->rows; y++)
        {
          q=QueueAuthenticPixels(image,0,y,image->columns,1,exception);
          if (q == (PixelPacket *) NULL)
            break;
          for (x=0; x < (ssize_t) image->columns; x++)
          {
            SetRedPixelComponent(q,ScaleCharToQuantum(*p++));
            SetGreenPixelComponent(q,ScaleCharToQuantum(*p++));
            SetBluePixelComponent(q,ScaleCharToQuantum(*p++));
            if (image->matte != MagickFalse)
              SetAlphaPixelComponent(q,ScaleCharToQuantum(*p++));
            q++;
          }
          if (SyncAuthenticPixels(image,exception) == MagickFalse)
            break;
          if (image->previous == (Image *) NULL)
            {
              status=SetImageProgress(image,LoadImageTag,(MagickOffsetType) y,
                image->rows);
              if (status == MagickFalse)
                break;
            }
        }
      }
    else
      {
        /*
          Create colormap.
        */
        if (number_colormaps == 0)
          map_length=256;
        if (AcquireImageColormap(image,map_length) == MagickFalse)
          ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
        p=colormap;
        if (number_colormaps == 1)
          for (i=0; i < (ssize_t) image->colors; i++)
          {
            /*
              Pseudocolor.
            */
            image->colormap[i].red=ScaleCharToQuantum((unsigned char) i);
            image->colormap[i].green=ScaleCharToQuantum((unsigned char) i);
            image->colormap[i].blue=ScaleCharToQuantum((unsigned char) i);
          }
        else
          if (number_colormaps > 1)
            for (i=0; i < (ssize_t) image->colors; i++)
            {
              image->colormap[i].red=ScaleCharToQuantum(*p);
              image->colormap[i].green=ScaleCharToQuantum(*(p+map_length));
              image->colormap[i].blue=ScaleCharToQuantum(*(p+map_length*2));
              p++;
            }
        p=rle_pixels;
        if (image->matte == MagickFalse)
          {
            /*
              Convert raster image to PseudoClass pixel packets.
            */
            for (y=0; y < (ssize_t) image->rows; y++)
            {
              q=QueueAuthenticPixels(image,0,y,image->columns,1,exception);
              if (q == (PixelPacket *) NULL)
                break;
              indexes=GetAuthenticIndexQueue(image);
              for (x=0; x < (ssize_t) image->columns; x++)
                SetIndexPixelComponent(indexes+x,*p++);
              if (SyncAuthenticPixels(image,exception) == MagickFalse)
                break;
              if (image->previous == (Image *) NULL)
                {
                  status=SetImageProgress(image,LoadImageTag,(MagickOffsetType)
                    y,image->rows);
                  if (status == MagickFalse)
                    break;
                }
            }
            (void) SyncImage(image);
          }
        else
          {
            /*
              Image has a matte channel-- promote to DirectClass.
            */
            for (y=0; y < (ssize_t) image->rows; y++)
            {
              q=QueueAuthenticPixels(image,0,y,image->columns,1,exception);
              if (q == (PixelPacket *) NULL)
                break;
              for (x=0; x < (ssize_t) image->columns; x++)
              {
                SetRedPixelComponent(q,image->colormap[*p++].red);
                SetGreenPixelComponent(q,image->colormap[*p++].green);
                SetBluePixelComponent(q,image->colormap[*p++].blue);
                SetAlphaPixelComponent(q,ScaleCharToQuantum(*p++));
                q++;
              }
              if (SyncAuthenticPixels(image,exception) == MagickFalse)
                break;
              if (image->previous == (Image *) NULL)
                {
                  status=SetImageProgress(image,LoadImageTag,(MagickOffsetType)
                    y,image->rows);
                  if (status == MagickFalse)
                    break;
                }
            }
            image->colormap=(PixelPacket *) RelinquishMagickMemory(
              image->colormap);
            image->storage_class=DirectClass;
            image->colors=0;
          }
      }
    if (number_colormaps != 0)
      colormap=(unsigned char *) RelinquishMagickMemory(colormap);
    rle_pixels=(unsigned char *) RelinquishMagickMemory(rle_pixels);
    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;
    (void) ReadBlobByte(image);
    count=ReadBlob(image,2,(unsigned char *) magick);
    if ((count != 0) && (memcmp(magick,"\122\314",2) == 0))
      {
        /*
          Allocate next image structure.
        */
        AcquireNextImage(image_info,image);
        if (GetNextImageInList(image) == (Image *) NULL)
          {
            image=DestroyImageList(image);
            return((Image *) NULL);
          }
        image=SyncNextImageInList(image);
        status=SetImageProgress(image,LoadImagesTag,TellBlob(image),
          GetBlobSize(image));
        if (status == MagickFalse)
          break;
      }
  } while ((count != 0) && (memcmp(magick,"\122\314",2) == 0));
  (void) CloseBlob(image);
  return(GetFirstImageInList(image));
}
Example #8
0
void CImageDialog::OnBnClickedButtonImageMask()
{
    // TODO: Add your control notification handler code here
    UpdateData(TRUE);
    SetImageProperty(m_strImagePathName);
}
Example #9
0
void CImageDialog::OnBnClickedRadioImageHoleTrue()
{
    // TODO: Add your control notification handler code here
    UpdateData(TRUE);
    SetImageProperty(m_strImagePathName);
}
Example #10
0
BOOL CImageDialog::OnInitDialog()
{
    CDialog::OnInitDialog();

    // TODO:  Add extra initialization here
    m_btnMask.EnableOtherButton(_T("Other"));
    m_btnMask.SetColor((COLORREF)0);
    m_btnMask.SetColumnsNumber(10);

    m_ctlFade.SetRange(0,255);
    m_ctlFade.SetPos(255);

    m_pManager=g_pMainFrame->GetActiveUIView()->GetPaintManager();
    m_ImagePreview.SetManager(m_pManager);

    g_HookAPI.EnableAddImage(false);

    m_strImagePathName=m_strImageProperty;
    LPCTSTR pStrImage=m_strImageProperty;
    CStdString sItem;
    CStdString sValue;
    LPTSTR pstr = NULL;
    while( *pStrImage != _T('\0') ) {
        sItem.Empty();
        sValue.Empty();
        while( *pStrImage != _T('\0') && *pStrImage != _T('=') ) {
            LPTSTR pstrTemp = ::CharNext(pStrImage);
            while( pStrImage < pstrTemp) {
                sItem += *pStrImage++;
            }
        }
        if( *pStrImage++ != _T('=') ) break;
        if( *pStrImage++ != _T('\'') ) break;
        while( *pStrImage != _T('\0') && *pStrImage != _T('\'') ) {
            LPTSTR pstrTemp = ::CharNext(pStrImage);
            while( pStrImage < pstrTemp) {
                sValue += *pStrImage++;
            }
        }
        if( *pStrImage++ != _T('\'') ) break;
        if( !sValue.IsEmpty() ) {
            if( sItem == _T("file"))
                m_strImagePathName = sValue;
            else if( sItem == _T("dest") )
                m_strDest = sValue;
            else if( sItem == _T("source") )
                m_strSource = sValue;
            else if( sItem == _T("corner") )
                m_strCorner = sValue;
            else if( sItem == _T("mask") ) {
                DWORD dwMask;
                if( sValue[0] == _T('#')) dwMask = _tcstoul(sValue.GetData() + 1, &pstr, 16);
                else dwMask = _tcstoul(sValue.GetData(), &pstr, 16);
                dwMask&=0x00FFFFFF;
                m_btnMask.SetColor(RGB(GetBValue(dwMask),GetGValue(dwMask),GetRValue(dwMask)));
            }
            else if( sItem == _T("fade") ) {
                m_nFade = (BYTE)_tcstoul(sValue.GetData(), &pstr, 10);
            }
            else if( sItem == _T("hole") ) {
                m_bHole = (_tcscmp(sValue.GetData(), _T("true")) == 0);
            }
        }
        if( *pStrImage++ != _T(' ') ) break;
    }
    m_ctlFade.SetPos(m_nFade);

    int nIndex=m_lstImages.AddString(_T("(无)"));
    m_lstImages.SetItemDataPtr(nIndex,(void*)(LPCTSTR)m_strNullImage);
    const CStringArray* parrImage=g_pResourceView->GetAllImage();
    LPCTSTR pstrImage=NULL;
    LPTSTR pszFileName=NULL;
    for(int i=0; i<parrImage->GetSize(); i++)
    {
        pstrImage=parrImage->GetAt(i);
        pszFileName=_tcsrchr((LPTSTR)pstrImage,_T('\\'))+1;
        nIndex=m_lstImages.AddString(pszFileName);
        m_lstImages.SetItemDataPtr(nIndex,(void*)pstrImage);
    }
    pstrImage=m_strImagePathName;
    pszFileName=_tcsrchr((LPTSTR)pstrImage,_T('\\'))+1;
    m_strImagePathName.IsEmpty()?m_lstImages.SelectString(-1,_T("(无)")):m_lstImages.SelectString(-1,pszFileName);

    UpdateData(FALSE);
    SetImageProperty(m_strImagePathName);

    return TRUE;  // return TRUE unless you set the focus to a control
    // EXCEPTION: OCX Property Pages should return FALSE
}
Example #11
0
void CImageDialog::OnEnKillfocusEditImageCorner()
{
    // TODO: Add your control notification handler code here
    UpdateData(TRUE);
    SetImageProperty(m_strImagePathName);
}
Example #12
0
File: sgi.c Project: acal/alchemy
static Image *ReadSGIImage(const ImageInfo *image_info,ExceptionInfo *exception)
{
  Image
    *image;

  MagickBooleanType
    status;

  MagickSizeType
    number_pixels;

  MemoryInfo
    *pixel_info;

  register IndexPacket
    *indexes;

  register PixelPacket
    *q;

  register ssize_t
    i,
    x;

  register unsigned char
    *p;

  SGIInfo
    iris_info;

  size_t
    bytes_per_pixel,
    quantum;

  ssize_t
    count,
    y,
    z;

  unsigned char
    *pixels;

  /*
    Open image file.
  */
  assert(image_info != (const ImageInfo *) NULL);
  assert(image_info->signature == MagickSignature);
  if (image_info->debug != MagickFalse)
    (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
      image_info->filename);
  assert(exception != (ExceptionInfo *) NULL);
  assert(exception->signature == MagickSignature);
  image=AcquireImage(image_info);
  status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception);
  if (status == MagickFalse)
    {
      image=DestroyImageList(image);
      return((Image *) NULL);
    }
  /*
    Read SGI raster header.
  */
  iris_info.magic=ReadBlobMSBShort(image);
  do
  {
    /*
      Verify SGI identifier.
    */
    if (iris_info.magic != 0x01DA)
      ThrowReaderException(CorruptImageError,"ImproperImageHeader");
    iris_info.storage=(unsigned char) ReadBlobByte(image);
    switch (iris_info.storage)
    {
      case 0x00: image->compression=NoCompression; break;
      case 0x01: image->compression=RLECompression; break;
      default:
        ThrowReaderException(CorruptImageError,"ImproperImageHeader");
    }
    iris_info.bytes_per_pixel=(unsigned char) ReadBlobByte(image);
    if ((iris_info.bytes_per_pixel == 0) || (iris_info.bytes_per_pixel > 2))
      ThrowReaderException(CorruptImageError,"ImproperImageHeader");
    iris_info.dimension=ReadBlobMSBShort(image);
    iris_info.columns=ReadBlobMSBShort(image);
    iris_info.rows=ReadBlobMSBShort(image);
    iris_info.depth=ReadBlobMSBShort(image);
    if ((iris_info.depth == 0) || (iris_info.depth > 4))
      ThrowReaderException(CorruptImageError,"ImproperImageHeader");
    iris_info.minimum_value=ReadBlobMSBLong(image);
    iris_info.maximum_value=ReadBlobMSBLong(image);
    iris_info.sans=ReadBlobMSBLong(image);
    (void) ReadBlob(image,sizeof(iris_info.name),(unsigned char *)
      iris_info.name);
    iris_info.name[sizeof(iris_info.name)-1]='\0';
    if (*iris_info.name != '\0')
      (void) SetImageProperty(image,"label",iris_info.name);
    iris_info.pixel_format=ReadBlobMSBLong(image);
    if (iris_info.pixel_format != 0)
      ThrowReaderException(CorruptImageError,"ImproperImageHeader");
    count=ReadBlob(image,sizeof(iris_info.filler),iris_info.filler);
    (void) count;
    image->columns=iris_info.columns;
    image->rows=iris_info.rows;
    image->depth=(size_t) MagickMin(iris_info.depth,MAGICKCORE_QUANTUM_DEPTH);
    if (iris_info.pixel_format == 0)
      image->depth=(size_t) MagickMin((size_t) 8*
        iris_info.bytes_per_pixel,MAGICKCORE_QUANTUM_DEPTH);
    if (iris_info.depth < 3)
      {
        image->storage_class=PseudoClass;
        image->colors=iris_info.bytes_per_pixel > 1 ? 65535 : 256;
      }
    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);
    if (status == MagickFalse)
      {
        InheritException(exception,&image->exception);
        return(DestroyImageList(image));
      }
    /*
      Allocate SGI pixels.
    */
    bytes_per_pixel=(size_t) iris_info.bytes_per_pixel;
    number_pixels=(MagickSizeType) iris_info.columns*iris_info.rows;
    if ((4*bytes_per_pixel*number_pixels) != ((MagickSizeType) (size_t)
        (4*bytes_per_pixel*number_pixels)))
      ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
    pixel_info=AcquireVirtualMemory(iris_info.columns,iris_info.rows*4*
      bytes_per_pixel*sizeof(*pixels));
    if (pixel_info == (MemoryInfo *) NULL)
      ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
    pixels=(unsigned char *) GetVirtualMemoryBlob(pixel_info);
    if ((int) iris_info.storage != 0x01)
      {
        unsigned char
          *scanline;

        /*
          Read standard image format.
        */
        scanline=(unsigned char *) AcquireQuantumMemory(iris_info.columns,
          bytes_per_pixel*sizeof(*scanline));
        if (scanline == (unsigned char *) NULL)
          ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
        for (z=0; z < (ssize_t) iris_info.depth; z++)
        {
          p=pixels+bytes_per_pixel*z;
          for (y=0; y < (ssize_t) iris_info.rows; y++)
          {
            count=ReadBlob(image,bytes_per_pixel*iris_info.columns,scanline);
            if (EOFBlob(image) != MagickFalse)
              break;
            if (bytes_per_pixel == 2)
              for (x=0; x < (ssize_t) iris_info.columns; x++)
              {
                *p=scanline[2*x];
                *(p+1)=scanline[2*x+1];
                p+=8;
              }
            else
              for (x=0; x < (ssize_t) iris_info.columns; x++)
              {
                *p=scanline[x];
                p+=4;
              }
          }
        }
        scanline=(unsigned char *) RelinquishMagickMemory(scanline);
      }
    else
      {
        MemoryInfo
          *packet_info;

        size_t
          *runlength;

        ssize_t
          offset,
          *offsets;

        unsigned char
          *packets;

        unsigned int
          data_order;

        /*
          Read runlength-encoded image format.
        */
        offsets=(ssize_t *) AcquireQuantumMemory((size_t) iris_info.rows,
          iris_info.depth*sizeof(*offsets));
        runlength=(size_t *) AcquireQuantumMemory(iris_info.rows,
          iris_info.depth*sizeof(*runlength));
        packet_info=AcquireVirtualMemory((size_t) iris_info.columns+10UL,4UL*
          sizeof(*packets));
        if ((offsets == (ssize_t *) NULL) ||
            (runlength == (size_t *) NULL) ||
            (packet_info == (MemoryInfo *) NULL))
          {
            if (offsets == (ssize_t *) NULL)
              offsets=(ssize_t *) RelinquishMagickMemory(offsets);
            if (runlength == (size_t *) NULL)
              runlength=(size_t *) RelinquishMagickMemory(runlength);
            if (packet_info == (MemoryInfo *) NULL)
              packet_info=RelinquishVirtualMemory(packet_info);
            ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
          }
        packets=(unsigned char *) GetVirtualMemoryBlob(packet_info);
        for (i=0; i < (ssize_t) (iris_info.rows*iris_info.depth); i++)
          offsets[i]=(int) ReadBlobMSBLong(image);
        for (i=0; i < (ssize_t) (iris_info.rows*iris_info.depth); i++)
        {
          runlength[i]=ReadBlobMSBLong(image);
          if (runlength[i] > (4*(size_t) iris_info.columns+10))
            ThrowReaderException(CorruptImageError,"ImproperImageHeader");
        }
        /*
          Check data order.
        */
        offset=0;
        data_order=0;
        for (y=0; ((y < (ssize_t) iris_info.rows) && (data_order == 0)); y++)
          for (z=0; ((z < (ssize_t) iris_info.depth) && (data_order == 0)); z++)
          {
            if (offsets[y+z*iris_info.rows] < offset)
              data_order=1;
            offset=offsets[y+z*iris_info.rows];
          }
        offset=(ssize_t) TellBlob(image);
        if (data_order == 1)
          {
            for (z=0; z < (ssize_t) iris_info.depth; z++)
            {
              p=pixels;
              for (y=0; y < (ssize_t) iris_info.rows; y++)
              {
                if (offset != offsets[y+z*iris_info.rows])
                  {
                    offset=offsets[y+z*iris_info.rows];
                    offset=(ssize_t) SeekBlob(image,(ssize_t) offset,SEEK_SET);
                  }
                count=ReadBlob(image,(size_t) runlength[y+z*iris_info.rows],
                  packets);
                if (EOFBlob(image) != MagickFalse)
                  break;
                offset+=(ssize_t) runlength[y+z*iris_info.rows];
                status=SGIDecode(bytes_per_pixel,(ssize_t)
                  (runlength[y+z*iris_info.rows]/bytes_per_pixel),packets,
                  1L*iris_info.columns,p+bytes_per_pixel*z);
                if (status == MagickFalse)
                  ThrowReaderException(CorruptImageError,"ImproperImageHeader");
                p+=(iris_info.columns*4*bytes_per_pixel);
              }
            }
          }
        else
          {
            MagickOffsetType
              position;

            position=TellBlob(image);
            p=pixels;
            for (y=0; y < (ssize_t) iris_info.rows; y++)
            {
              for (z=0; z < (ssize_t) iris_info.depth; z++)
              {
                if (offset != offsets[y+z*iris_info.rows])
                  {
                    offset=offsets[y+z*iris_info.rows];
                    offset=(ssize_t) SeekBlob(image,(ssize_t) offset,SEEK_SET);
                  }
                count=ReadBlob(image,(size_t) runlength[y+z*iris_info.rows],
                  packets);
                if (EOFBlob(image) != MagickFalse)
                  break;
                offset+=(ssize_t) runlength[y+z*iris_info.rows];
                status=SGIDecode(bytes_per_pixel,(ssize_t)
                  (runlength[y+z*iris_info.rows]/bytes_per_pixel),packets,
                  1L*iris_info.columns,p+bytes_per_pixel*z);
                if (status == MagickFalse)
                  ThrowReaderException(CorruptImageError,"ImproperImageHeader");
              }
              p+=(iris_info.columns*4*bytes_per_pixel);
            }
            offset=(ssize_t) SeekBlob(image,position,SEEK_SET);
          }
        packet_info=RelinquishVirtualMemory(packet_info);
        runlength=(size_t *) RelinquishMagickMemory(runlength);
        offsets=(ssize_t *) RelinquishMagickMemory(offsets);
      }
    /*
      Initialize image structure.
    */
    image->matte=iris_info.depth == 4 ? MagickTrue : MagickFalse;
    image->columns=iris_info.columns;
    image->rows=iris_info.rows;
    /*
      Convert SGI raster image to pixel packets.
    */
    if (image->storage_class == DirectClass)
      {
        /*
          Convert SGI image to DirectClass pixel packets.
        */
        if (bytes_per_pixel == 2)
          {
            for (y=0; y < (ssize_t) image->rows; y++)
            {
              p=pixels+(image->rows-y-1)*8*image->columns;
              q=QueueAuthenticPixels(image,0,y,image->columns,1,exception);
              if (q == (PixelPacket *) NULL)
                break;
              for (x=0; x < (ssize_t) image->columns; x++)
              {
                SetPixelRed(q,ScaleShortToQuantum((unsigned short)
                  ((*(p+0) << 8) | (*(p+1)))));
                SetPixelGreen(q,ScaleShortToQuantum((unsigned short)
                  ((*(p+2) << 8) | (*(p+3)))));
                SetPixelBlue(q,ScaleShortToQuantum((unsigned short)
                  ((*(p+4) << 8) | (*(p+5)))));
                SetPixelOpacity(q,OpaqueOpacity);
                if (image->matte != MagickFalse)
                  SetPixelAlpha(q,ScaleShortToQuantum((unsigned short)
                    ((*(p+6) << 8) | (*(p+7)))));
                p+=8;
                q++;
              }
              if (SyncAuthenticPixels(image,exception) == MagickFalse)
                break;
              if (image->previous == (Image *) NULL)
                {
                  status=SetImageProgress(image,LoadImageTag,(MagickOffsetType)
                    y,image->rows);
                  if (status == MagickFalse)
                    break;
                }
            }
          }
        else
          for (y=0; y < (ssize_t) image->rows; y++)
          {
            p=pixels+(image->rows-y-1)*4*image->columns;
            q=QueueAuthenticPixels(image,0,y,image->columns,1,exception);
            if (q == (PixelPacket *) NULL)
              break;
            for (x=0; x < (ssize_t) image->columns; x++)
            {
              SetPixelRed(q,ScaleCharToQuantum(*p));
              q->green=ScaleCharToQuantum(*(p+1));
              q->blue=ScaleCharToQuantum(*(p+2));
              SetPixelOpacity(q,OpaqueOpacity);
              if (image->matte != MagickFalse)
                SetPixelAlpha(q,ScaleCharToQuantum(*(p+3)));
              p+=4;
              q++;
            }
            if (SyncAuthenticPixels(image,exception) == MagickFalse)
              break;
            if (image->previous == (Image *) NULL)
              {
                status=SetImageProgress(image,LoadImageTag,(MagickOffsetType) y,
                image->rows);
                if (status == MagickFalse)
                  break;
              }
          }
      }
    else
      {
        /*
          Create grayscale map.
        */
        if (AcquireImageColormap(image,image->colors) == MagickFalse)
          ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
        /*
          Convert SGI image to PseudoClass pixel packets.
        */
        if (bytes_per_pixel == 2)
          {
            for (y=0; y < (ssize_t) image->rows; y++)
            {
              p=pixels+(image->rows-y-1)*8*image->columns;
              q=QueueAuthenticPixels(image,0,y,image->columns,1,exception);
              if (q == (PixelPacket *) NULL)
                break;
              indexes=GetAuthenticIndexQueue(image);
              for (x=0; x < (ssize_t) image->columns; x++)
              {
                quantum=(*p << 8);
                quantum|=(*(p+1));
                SetPixelIndex(indexes+x,quantum);
                p+=8;
                q++;
              }
              if (SyncAuthenticPixels(image,exception) == MagickFalse)
                break;
              if (image->previous == (Image *) NULL)
                {
                  status=SetImageProgress(image,LoadImageTag,(MagickOffsetType)
                    y,image->rows);
                  if (status == MagickFalse)
                    break;
                }
            }
          }
        else
          for (y=0; y < (ssize_t) image->rows; y++)
          {
            p=pixels+(image->rows-y-1)*4*image->columns;
            q=QueueAuthenticPixels(image,0,y,image->columns,1,exception);
            if (q == (PixelPacket *) NULL)
              break;
            indexes=GetAuthenticIndexQueue(image);
            for (x=0; x < (ssize_t) image->columns; x++)
            {
              SetPixelIndex(indexes+x,*p);
              p+=4;
              q++;
            }
            if (SyncAuthenticPixels(image,exception) == MagickFalse)
              break;
            if (image->previous == (Image *) NULL)
              {
                status=SetImageProgress(image,LoadImageTag,(MagickOffsetType) y,
                image->rows);
                if (status == MagickFalse)
                  break;
              }
          }
        (void) SyncImage(image);
      }
    pixel_info=RelinquishVirtualMemory(pixel_info);
    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;
    iris_info.magic=ReadBlobMSBShort(image);
    if (iris_info.magic == 0x01DA)
      {
        /*
          Allocate next image structure.
        */
        AcquireNextImage(image_info,image);
        if (GetNextImageInList(image) == (Image *) NULL)
          {
            image=DestroyImageList(image);
            return((Image *) NULL);
          }
        image=SyncNextImageInList(image);
        status=SetImageProgress(image,LoadImagesTag,TellBlob(image),
          GetBlobSize(image));
        if (status == MagickFalse)
          break;
      }
  } while (iris_info.magic == 0x01DA);
  (void) CloseBlob(image);
  return(GetFirstImageInList(image));
}
Example #13
0
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%                                                                             %
%                                                                             %
%                                                                             %
%   R e a d L A B E L I m a g e                                               %
%                                                                             %
%                                                                             %
%                                                                             %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%  ReadLABELImage() reads a LABEL 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 ReadLABELImage method is:
%
%      Image *ReadLABELImage(const ImageInfo *image_info,
%        ExceptionInfo *exception)
%
%  A description of each parameter follows:
%
%    o image_info: the image info.
%
%    o exception: return any errors or warnings in this structure.
%
*/
static Image *ReadLABELImage(const ImageInfo *image_info,
  ExceptionInfo *exception)
{
  char
    geometry[MaxTextExtent],
    *property;

  const char
    *label;

  DrawInfo
    *draw_info;

  Image
    *image;

  MagickBooleanType
    status;

  TypeMetric
    metrics;

  size_t
    height,
    width;

  /*
    Initialize Image structure.
  */
  assert(image_info != (const ImageInfo *) NULL);
  assert(image_info->signature == MagickSignature);
  if (image_info->debug != MagickFalse)
    (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
      image_info->filename);
  assert(exception != (ExceptionInfo *) NULL);
  assert(exception->signature == MagickSignature);
  image=AcquireImage(image_info);
  (void) ResetImagePage(image,"0x0+0+0");
  property=InterpretImageProperties(image_info,image,image_info->filename);
  (void) SetImageProperty(image,"label",property);
  property=DestroyString(property);
  label=GetImageProperty(image,"label");
  draw_info=CloneDrawInfo(image_info,(DrawInfo *) NULL);
  draw_info->text=ConstantString(label);
  status=GetMultilineTypeMetrics(image,draw_info,&metrics);
  if (image->columns == 0)
    {
      (void) FormatLocaleString(geometry,MaxTextExtent,"%+g%+g",
        -metrics.bounds.x1,metrics.ascent);
      if (draw_info->gravity == UndefinedGravity)
        (void) CloneString(&draw_info->geometry,geometry);
      status=GetMultilineTypeMetrics(image,draw_info,&metrics);
      (void) status;
      image->columns=(size_t) floor(metrics.width+draw_info->stroke_width+0.5);
    }
  if (image->rows == 0)
    {
      (void) FormatLocaleString(geometry,MaxTextExtent,"%+g%+g",
        -metrics.bounds.x1,metrics.ascent);
      if (draw_info->gravity == UndefinedGravity)
        (void) CloneString(&draw_info->geometry,geometry);
      status=GetMultilineTypeMetrics(image,draw_info,&metrics);
      image->rows=(size_t) floor(metrics.height+draw_info->stroke_width+0.5);
    }
  if (image_info->pointsize == 0.0)
    {
      double
        high,
        low;

      /*
        Auto fit text into bounding box.
      */
      for ( ; ; draw_info->pointsize*=2.0)
      {
        (void) FormatLocaleString(geometry,MaxTextExtent,"%+g%+g",
          -metrics.bounds.x1,metrics.ascent);
        if (draw_info->gravity == UndefinedGravity)
          (void) CloneString(&draw_info->geometry,geometry);
        status=GetMultilineTypeMetrics(image,draw_info,&metrics);
        (void) status;
        width=(size_t) floor(metrics.width+draw_info->stroke_width+0.5);
        height=(size_t) floor(metrics.height+draw_info->stroke_width+0.5);
        if ((width >= image->columns) && (height >= image->rows))
          break;
        if ((width >= (image->columns << 1)) || (height >= (image->rows << 1)))
          break;
      }
      high=draw_info->pointsize/2.0;
      for (low=high/2.0; (high-low) > 1.0; )
      {
        draw_info->pointsize=(low+high)/2.0;
        (void) FormatLocaleString(geometry,MaxTextExtent,"%+g%+g",
          -metrics.bounds.x1,metrics.ascent);
        if (draw_info->gravity == UndefinedGravity)
          (void) CloneString(&draw_info->geometry,geometry);
        status=GetMultilineTypeMetrics(image,draw_info,&metrics);
        width=(size_t) floor(metrics.width+draw_info->stroke_width+0.5);
        height=(size_t) floor(metrics.height+draw_info->stroke_width+0.5);
        if ((width <= image->columns) && (height <= image->rows))
          low=draw_info->pointsize+1.0;
        else
          high=draw_info->pointsize-1.0;
      }
      for (draw_info->pointsize=(low+high)/2.0; (high-low) > 1.0; )
      {
        (void) FormatLocaleString(geometry,MaxTextExtent,"%+g%+g",
          -metrics.bounds.x1,metrics.ascent);
        if (draw_info->gravity == UndefinedGravity)
          (void) CloneString(&draw_info->geometry,geometry);
        status=GetMultilineTypeMetrics(image,draw_info,&metrics);
        width=(size_t) floor(metrics.width+draw_info->stroke_width+0.5);
        height=(size_t) floor(metrics.height+draw_info->stroke_width+0.5);
        if ((width <= image->columns) && (height <= image->rows))
          break;
        draw_info->pointsize--;
      }
      draw_info->pointsize=floor(draw_info->pointsize+0.5);
    }
  status=GetMultilineTypeMetrics(image,draw_info,&metrics);
  if (status == MagickFalse)
    {
      InheritException(exception,&image->exception);
      image=DestroyImageList(image);
      return((Image *) NULL);
    }
  if (draw_info->gravity == UndefinedGravity)
    {
      (void) FormatLocaleString(geometry,MaxTextExtent,"%+g%+g",
        -metrics.bounds.x1+draw_info->stroke_width/2.0,metrics.ascent+
        draw_info->stroke_width/2.0);
      (void) CloneString(&draw_info->geometry,geometry);
    }
  if (draw_info->direction == RightToLeftDirection)
    {
      if (draw_info->direction == RightToLeftDirection)
        (void) FormatLocaleString(geometry,MaxTextExtent,"%+g%+g",
          image->columns-(metrics.bounds.x2+draw_info->stroke_width/2.0),
          metrics.ascent+draw_info->stroke_width/2.0);
      (void) CloneString(&draw_info->geometry,geometry);
    }
  if (SetImageBackgroundColor(image) == MagickFalse)
    {
      InheritException(exception,&image->exception);
      image=DestroyImageList(image);
      return((Image *) NULL);
    }
  (void) AnnotateImage(image,draw_info);
  if (image_info->pointsize == 0.0)
    {
      char
        pointsize[MaxTextExtent];

      (void) FormatLocaleString(pointsize,MaxTextExtent,"%.20g",
        draw_info->pointsize);
      (void) SetImageProperty(image,"label:pointsize",pointsize);
    }
  draw_info=DestroyDrawInfo(draw_info);
  return(GetFirstImageInList(image));
}
Example #14
0
static MagickBooleanType WriteHISTOGRAMImage(const ImageInfo *image_info,
  Image *image)
{
#define HistogramDensity  "256x200"

  ChannelType
    channel;

  char
    filename[MaxTextExtent];

  ExceptionInfo
    *exception;

  FILE
    *file;

  Image
    *histogram_image;

  ImageInfo
    *write_info;

  int
    unique_file;

  long
    y;

  MagickBooleanType
    status;

  MagickPixelPacket
    *histogram;

  MagickRealType
    maximum,
    scale;

  RectangleInfo
    geometry;

  register const PixelPacket
    *p;

  register long
    x;

  register PixelPacket
    *q,
    *r;

  size_t
    length;

  /*
    Allocate histogram image.
  */
  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_info->filename);
  SetGeometry(image,&geometry);
  if (image_info->density == (char *) NULL)
    (void) ParseAbsoluteGeometry(HistogramDensity,&geometry);
  else
    (void) ParseAbsoluteGeometry(image_info->density,&geometry);
  histogram_image=CloneImage(image,geometry.width,geometry.height,MagickTrue,
    &image->exception);
  if (histogram_image == (Image *) NULL)
    ThrowWriterException(ResourceLimitError,"MemoryAllocationFailed");
  (void) SetImageStorageClass(histogram_image,DirectClass);
  /*
    Allocate histogram count arrays.
  */
  length=MagickMax((size_t) ScaleQuantumToChar((Quantum) QuantumRange)+1UL,
    histogram_image->columns);
  histogram=(MagickPixelPacket *) AcquireQuantumMemory(length,
    sizeof(*histogram));
  if (histogram == (MagickPixelPacket *) NULL)
    {
      histogram_image=DestroyImage(histogram_image);
      ThrowWriterException(ResourceLimitError,"MemoryAllocationFailed");
    }
  /*
    Initialize histogram count arrays.
  */
  channel=image_info->channel;
  (void) ResetMagickMemory(histogram,0,length*sizeof(*histogram));
  for (y=0; y < (long) image->rows; y++)
  {
    p=GetVirtualPixels(image,0,y,image->columns,1,&image->exception);
    if (p == (const PixelPacket *) NULL)
      break;
    for (x=0; x < (long) image->columns; x++)
    {
      if ((channel & RedChannel) != 0)
        histogram[ScaleQuantumToChar(p->red)].red++;
      if ((channel & GreenChannel) != 0)
        histogram[ScaleQuantumToChar(p->green)].green++;
      if ((channel & BlueChannel) != 0)
        histogram[ScaleQuantumToChar(p->blue)].blue++;
      p++;
    }
  }
  maximum=histogram[0].red;
  for (x=0; x < (long) histogram_image->columns; x++)
  {
    if (((channel & RedChannel) != 0) && (maximum < histogram[x].red))
      maximum=histogram[x].red;
    if (((channel & GreenChannel) != 0) && (maximum < histogram[x].green))
      maximum=histogram[x].green;
    if (((channel & BlueChannel) != 0) && (maximum < histogram[x].blue))
      maximum=histogram[x].blue;
  }
  scale=(MagickRealType) histogram_image->rows/maximum;
  /*
    Initialize histogram image.
  */
  exception=(&image->exception);
  (void) QueryColorDatabase("#000000",&histogram_image->background_color,
    &image->exception);
  (void) SetImageBackgroundColor(histogram_image);
  for (x=0; x < (long) histogram_image->columns; x++)
  {
    q=GetAuthenticPixels(histogram_image,x,0,1,histogram_image->rows,exception);
    if (q == (PixelPacket *) NULL)
      break;
    if ((channel & RedChannel) != 0)
      {
        y=(long) (histogram_image->rows-scale*histogram[x].red+0.5);
        r=q+y;
        for ( ; y < (long) histogram_image->rows; y++)
        {
          r->red=(Quantum) QuantumRange;
          r++;
        }
      }
    if ((channel & GreenChannel) != 0)
      {
        y=(long) (histogram_image->rows-scale*histogram[x].green+0.5);
        r=q+y;
        for ( ; y < (long) histogram_image->rows; y++)
        {
          r->green=(Quantum) QuantumRange;
          r++;
        }
      }
    if ((channel & BlueChannel) != 0)
      {
        y=(long) (histogram_image->rows-scale*histogram[x].blue+0.5);
        r=q+y;
        for ( ; y < (long) histogram_image->rows; y++)
        {
          r->blue=(Quantum) QuantumRange;
          r++;
        }
      }
    if (SyncAuthenticPixels(histogram_image,exception) == MagickFalse)
      break;
    status=SetImageProgress(image,SaveImageTag,y,histogram_image->rows);
    if (status == MagickFalse)
      break;
  }
  /*
    Relinquish resources.
  */
  histogram=(MagickPixelPacket *) RelinquishMagickMemory(histogram);
  file=(FILE *) NULL;
  unique_file=AcquireUniqueFileResource(filename);
  if (unique_file != -1)
    file=fdopen(unique_file,"wb");
  if ((unique_file != -1) && (file != (FILE *) NULL))
    {
      char
        *property;

      /*
        Add a histogram as an image comment.
      */
      (void) GetNumberColors(image,file,&image->exception);
      (void) fclose(file);
      property=FileToString(filename,~0UL,&image->exception);
      if (property != (char *) NULL)
        {
          (void) SetImageProperty(histogram_image,"comment",property);
          property=DestroyString(property);
        }
    }
  (void) RelinquishUniqueFileResource(filename);
  /*
    Write Histogram image.
  */
  (void) CopyMagickString(histogram_image->filename,image_info->filename,
    MaxTextExtent);
  write_info=CloneImageInfo(image_info);
  (void) SetImageInfo(write_info,MagickTrue,&image->exception);
  if (LocaleCompare(write_info->magick,"HISTOGRAM") == 0)
    (void) FormatMagickString(histogram_image->filename,MaxTextExtent,
      "miff:%s",write_info->filename);
  status=WriteImage(write_info,histogram_image);
  histogram_image=DestroyImage(histogram_image);
  write_info=DestroyImageInfo(write_info);
  return(status);
}
Example #15
0
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%                                                                             %
%                                                                             %
%                                                                             %
%   R e a d C A P T I O N I m a g e                                           %
%                                                                             %
%                                                                             %
%                                                                             %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%  ReadCAPTIONImage() reads a CAPTION 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 ReadCAPTIONImage method is:
%
%      Image *ReadCAPTIONImage(const ImageInfo *image_info,
%        ExceptionInfo *exception)
%
%  A description of each parameter follows:
%
%    o image_info: the image info.
%
%    o exception: return any errors or warnings in this structure.
%
*/
static Image *ReadCAPTIONImage(const ImageInfo *image_info,
  ExceptionInfo *exception)
{
  char
    *caption,
    geometry[MaxTextExtent],
    *property;

  const char
    *gravity,
    *option;

  DrawInfo
    *draw_info;

  Image
    *image;

  MagickBooleanType
    status;

  register ssize_t
    i;

  size_t
    height,
    width;

  TypeMetric
    metrics;

  /*
    Initialize Image structure.
  */
  assert(image_info != (const ImageInfo *) NULL);
  assert(image_info->signature == MagickSignature);
  if (image_info->debug != MagickFalse)
    (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
      image_info->filename);
  assert(exception != (ExceptionInfo *) NULL);
  assert(exception->signature == MagickSignature);
  image=AcquireImage(image_info,exception);
  if (image->columns == 0)
    ThrowReaderException(OptionError,"MustSpecifyImageSize");
  (void) ResetImagePage(image,"0x0+0+0");
  /*
    Format caption.
  */
  option=GetImageOption(image_info,"filename");
  if (option == (const char *) NULL)
    property=InterpretImageProperties(image_info,image,image_info->filename,
      exception);
  else
    if (LocaleNCompare(option,"caption:",8) == 0)
      property=InterpretImageProperties(image_info,image,option+8,exception);
    else
      property=InterpretImageProperties(image_info,image,option,exception);
  (void) SetImageProperty(image,"caption",property,exception);
  property=DestroyString(property);
  caption=ConstantString(GetImageProperty(image,"caption",exception));
  draw_info=CloneDrawInfo(image_info,(DrawInfo *) NULL);
  (void) CloneString(&draw_info->text,caption);
  gravity=GetImageOption(image_info,"gravity");
  if (gravity != (char *) NULL)
    draw_info->gravity=(GravityType) ParseCommandOption(MagickGravityOptions,
      MagickFalse,gravity);
  if ((*caption != '\0') && (image->rows != 0) &&
      (image_info->pointsize == 0.0))
    {
      char
        *text;

      double
        high,
        low;

      /*
        Auto fit text into bounding box.
      */
      for ( ; ; )
      {
        text=AcquireString(caption);
        i=FormatMagickCaption(image,draw_info,MagickTrue,&metrics,&text,
          exception);
        (void) CloneString(&draw_info->text,text);
        text=DestroyString(text);
        (void) FormatLocaleString(geometry,MaxTextExtent,"%+g%+g",
          -metrics.bounds.x1,metrics.ascent);
        if (draw_info->gravity == UndefinedGravity)
          (void) CloneString(&draw_info->geometry,geometry);
        status=GetMultilineTypeMetrics(image,draw_info,&metrics,exception);
        (void) status;
        width=(size_t) floor(metrics.width+draw_info->stroke_width+0.5);
        height=(size_t) floor(metrics.height+draw_info->stroke_width+0.5);
        if ((width > image->columns) && (height > image->rows))
          break;
        draw_info->pointsize*=2.0;
      }
      high=draw_info->pointsize/2.0;
      low=high/2.0;
      while ((high-low) > 1.0)
      {
        draw_info->pointsize=(low+high)/2.0;
        text=AcquireString(caption);
        i=FormatMagickCaption(image,draw_info,MagickTrue,&metrics,&text,
          exception);
        (void) CloneString(&draw_info->text,text);
        text=DestroyString(text);
        (void) FormatLocaleString(geometry,MaxTextExtent,"%+g%+g",
          -metrics.bounds.x1,metrics.ascent);
        if (draw_info->gravity == UndefinedGravity)
          (void) CloneString(&draw_info->geometry,geometry);
        status=GetMultilineTypeMetrics(image,draw_info,&metrics,exception);
        width=(size_t) floor(metrics.width+draw_info->stroke_width+0.5);
        height=(size_t) floor(metrics.height+draw_info->stroke_width+0.5);
        if ((width <= image->columns) && (height <= image->rows))
          low=draw_info->pointsize+1.0;
        else
          high=draw_info->pointsize-1.0;
      }
      for (draw_info->pointsize=(low+high)/2.0; ; )
      {
        text=AcquireString(caption);
        i=FormatMagickCaption(image,draw_info,MagickTrue,&metrics,&text,
          exception);
        (void) CloneString(&draw_info->text,text);
        text=DestroyString(text);
        (void) FormatLocaleString(geometry,MaxTextExtent,"%+g%+g",
          -metrics.bounds.x1,metrics.ascent);
        if (draw_info->gravity == UndefinedGravity)
          (void) CloneString(&draw_info->geometry,geometry);
        status=GetMultilineTypeMetrics(image,draw_info,&metrics,exception);
        width=(size_t) floor(metrics.width+draw_info->stroke_width+0.5);
        height=(size_t) floor(metrics.height+draw_info->stroke_width+0.5);
        if ((width <= image->columns) && (height <= image->rows))
          break;
        draw_info->pointsize--;
      }
      draw_info->pointsize=floor(draw_info->pointsize);
    }
  i=FormatMagickCaption(image,draw_info,MagickTrue,&metrics,&caption,exception);
  if (image->rows == 0)
    image->rows=(size_t) ((i+1)*(metrics.ascent-metrics.descent+
      draw_info->interline_spacing+draw_info->stroke_width)+0.5);
  if (image->rows == 0)
    image->rows=(size_t) ((i+1)*draw_info->pointsize+
      draw_info->interline_spacing+draw_info->stroke_width+0.5);
  if (SetImageBackgroundColor(image,exception) == MagickFalse)
    {
      image=DestroyImageList(image);
      return((Image *) NULL);
    }
  /*
    Draw caption.
  */
  (void) CloneString(&draw_info->text,caption);
  status=GetMultilineTypeMetrics(image,draw_info,&metrics,exception);
  if ((draw_info->gravity != UndefinedGravity) &&
      (draw_info->direction != RightToLeftDirection))
    image->page.x=(ssize_t) (metrics.bounds.x1-draw_info->stroke_width/2.0);
  else
    {
      (void) FormatLocaleString(geometry,MaxTextExtent,"%+g%+g",
        -metrics.bounds.x1+draw_info->stroke_width/2.0,metrics.ascent+
        draw_info->stroke_width/2.0);
      if (draw_info->direction == RightToLeftDirection)
        (void) FormatLocaleString(geometry,MaxTextExtent,"%+g%+g",
          image->columns-(metrics.bounds.x2+draw_info->stroke_width/2.0),
          metrics.ascent+draw_info->stroke_width/2.0);
      draw_info->geometry=AcquireString(geometry);
    }
  status=AnnotateImage(image,draw_info,exception);
  draw_info=DestroyDrawInfo(draw_info);
  caption=DestroyString(caption);
  if (status == MagickFalse)
    {
      image=DestroyImageList(image);
      return((Image *) NULL);
    }
  return(GetFirstImageInList(image));
}
Example #16
0
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%                                                                             %
%                                                                             %
%                                                                             %
%   S i g n a t u r e I m a g e                                               %
%                                                                             %
%                                                                             %
%                                                                             %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%  SignatureImage() computes a message digest from an image pixel stream with
%  an implementation of the NIST SHA-256 Message Digest algorithm.  This
%  signature uniquely identifies the image and is convenient for determining
%  if an image has been modified or whether two images are identical.
%
%  The format of the SignatureImage method is:
%
%      MagickBooleanType SignatureImage(Image *image)
%
%  A description of each parameter follows:
%
%    o image: the image.
%
*/
MagickExport MagickBooleanType SignatureImage(Image *image)
{
  CacheView
    *image_view;

  char
    *hex_signature;

  ExceptionInfo
    *exception;

  QuantumInfo
    *quantum_info;

  QuantumType
    quantum_type;

  register const PixelPacket
    *p;

  SignatureInfo
    *signature_info;

  size_t
    length;

  ssize_t
    y;

  StringInfo
    *signature;

  unsigned char
    *pixels;

  /*
    Compute image digital signature.
  */
  assert(image != (Image *) NULL);
  assert(image->signature == MagickSignature);
  if (image->debug != MagickFalse)
    (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
  quantum_info=AcquireQuantumInfo((const ImageInfo *) NULL,image);
  if (quantum_info == (QuantumInfo *) NULL)
    ThrowBinaryException(ResourceLimitError,"MemoryAllocationFailed",
      image->filename);
  quantum_type=RGBQuantum;
  if (image->matte != MagickFalse)
    quantum_type=RGBAQuantum;
  if (image->colorspace == CMYKColorspace)
    {
      quantum_type=CMYKQuantum;
      if (image->matte != MagickFalse)
        quantum_type=CMYKAQuantum;
    }
  signature_info=AcquireSignatureInfo();
  signature=AcquireStringInfo(quantum_info->extent);
  pixels=GetQuantumPixels(quantum_info);
  exception=(&image->exception);
  image_view=AcquireCacheView(image);
  for (y=0; y < (ssize_t) image->rows; y++)
  {
    p=GetCacheViewVirtualPixels(image_view,0,y,image->columns,1,exception);
    if (p == (const PixelPacket *) NULL)
      break;
    length=ExportQuantumPixels(image,image_view,quantum_info,quantum_type,
      pixels,&image->exception);
    SetStringInfoLength(signature,length);
    SetStringInfoDatum(signature,pixels);
    UpdateSignature(signature_info,signature);
  }
  image_view=DestroyCacheView(image_view);
  quantum_info=DestroyQuantumInfo(quantum_info);
  FinalizeSignature(signature_info);
  hex_signature=StringInfoToHexString(GetSignatureDigest(signature_info));
  (void) DeleteImageProperty(image,"signature");
  (void) SetImageProperty(image,"signature",hex_signature);
  /*
    Free resources.
  */
  hex_signature=DestroyString(hex_signature);
  signature=DestroyStringInfo(signature);
  signature_info=DestroySignatureInfo(signature_info);
  return(MagickTrue);
}
Example #17
0
static Image *ReadCAPTIONImage(const ImageInfo *image_info,
  ExceptionInfo *exception)
{
  char
    *caption,
    *property;

  const char
    *option;

  DrawInfo
    *draw_info;

  FT_Bitmap
    *canvas;

  Image
    *image;

  PangoAlignment
    align;

  PangoContext
    *context;

  PangoFontDescription
    *description;

  PangoFontMap
    *fontmap;

  PangoGravity
    gravity;

  PangoLayout
    *layout;

  PangoRectangle
    extent;

  PixelPacket
    fill_color;

  RectangleInfo
    page;

  register PixelPacket
    *q;

  register unsigned char
    *p;

  ssize_t
    y;

  /*
    Initialize Image structure.
  */
  assert(image_info != (const ImageInfo *) NULL);
  assert(image_info->signature == MagickSignature);
  if (image_info->debug != MagickFalse)
    (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
      image_info->filename);
  assert(exception != (ExceptionInfo *) NULL);
  assert(exception->signature == MagickSignature);
  image=AcquireImage(image_info);
  (void) ResetImagePage(image,"0x0+0+0");
  /*
    Get context.
  */
  fontmap=(PangoFontMap *) pango_ft2_font_map_new();
  pango_ft2_font_map_set_resolution((PangoFT2FontMap *) fontmap,
    image->x_resolution,image->y_resolution);
  option=GetImageOption(image_info,"caption:hinting");
  pango_ft2_font_map_set_default_substitute((PangoFT2FontMap *) fontmap,
    PangoSubstitute,(char *) option,NULL);
  context=pango_font_map_create_context(fontmap);
  option=GetImageOption(image_info,"caption:language");
  if (option != (const char *) NULL)
    pango_context_set_language(context,pango_language_from_string(option));
  draw_info=CloneDrawInfo(image_info,(DrawInfo *) NULL);
  pango_context_set_base_dir(context,draw_info->direction ==
    RightToLeftDirection ? PANGO_DIRECTION_RTL : PANGO_DIRECTION_LTR);
  switch (draw_info->gravity)
  {
    case NorthGravity: gravity=PANGO_GRAVITY_NORTH; break;
    case WestGravity: gravity=PANGO_GRAVITY_WEST; break;
    case EastGravity: gravity=PANGO_GRAVITY_EAST; break;
    case SouthGravity: gravity=PANGO_GRAVITY_SOUTH; break;
    default: gravity=PANGO_GRAVITY_AUTO; break;
  }
  pango_context_set_base_gravity(context,gravity);
  option=GetImageOption(image_info,"caption:gravity-hint");
  if (option != (const char *) NULL)
    {
      if (LocaleCompare(option,"line") == 0)
        pango_context_set_gravity_hint(context,PANGO_GRAVITY_HINT_LINE);
      if (LocaleCompare(option,"natural") == 0)
        pango_context_set_gravity_hint(context,PANGO_GRAVITY_HINT_NATURAL);
      if (LocaleCompare(option,"strong") == 0)
        pango_context_set_gravity_hint(context,PANGO_GRAVITY_HINT_STRONG);
    }
  /*
    Configure layout.
  */
  layout=pango_layout_new(context);
  option=GetImageOption(image_info,"caption:auto-dir");
  if (option != (const char *) NULL)
    pango_layout_set_auto_dir(layout,1);
  option=GetImageOption(image_info,"caption:ellipsize");
  if (option != (const char *) NULL)
    {
      if (LocaleCompare(option,"end") == 0)
        pango_layout_set_ellipsize(layout,PANGO_ELLIPSIZE_END);
      if (LocaleCompare(option,"middle") == 0)
        pango_layout_set_ellipsize(layout,PANGO_ELLIPSIZE_MIDDLE);
      if (LocaleCompare(option,"none") == 0)
        pango_layout_set_ellipsize(layout,PANGO_ELLIPSIZE_NONE);
      if (LocaleCompare(option,"start") == 0)
        pango_layout_set_ellipsize(layout,PANGO_ELLIPSIZE_START);
    }
  option=GetImageOption(image_info,"caption:justify");
  if ((option != (const char *) NULL) && (IsMagickTrue(option) != MagickFalse))
    pango_layout_set_justify(layout,1);
  option=GetImageOption(image_info,"caption:single-paragraph");
  if ((option != (const char *) NULL) && (IsMagickTrue(option) != MagickFalse))
    pango_layout_set_single_paragraph_mode(layout,1);
  option=GetImageOption(image_info,"caption:wrap");
  if (option != (const char *) NULL)
    {
      if (LocaleCompare(option,"char") == 0)
        pango_layout_set_wrap(layout,PANGO_WRAP_CHAR);
      if (LocaleCompare(option,"word") == 0)
        pango_layout_set_wrap(layout,PANGO_WRAP_WORD);
      if (LocaleCompare(option,"word-char") == 0)
        pango_layout_set_wrap(layout,PANGO_WRAP_WORD_CHAR);
    }
  option=GetImageOption(image_info,"caption:indent");
  if (option != (const char *) NULL)
    pango_layout_set_indent(layout,(StringToLong(option)*image->x_resolution*
      PANGO_SCALE+36)/72);
  switch (draw_info->align)
  {
    case CenterAlign: align=PANGO_ALIGN_CENTER; break;
    case RightAlign: align=PANGO_ALIGN_RIGHT; break;
    case LeftAlign:
    default: align=PANGO_ALIGN_LEFT; break;
  }
  if ((align != PANGO_ALIGN_CENTER) &&
      (draw_info->direction == RightToLeftDirection))
    align=(PangoAlignment) (PANGO_ALIGN_LEFT+PANGO_ALIGN_RIGHT-align);
  pango_layout_set_alignment(layout,align);
  description=pango_font_description_from_string(draw_info->font ==
    (char *) NULL ? "helvetica" : draw_info->font);
  pango_font_description_set_size(description,PANGO_SCALE*draw_info->pointsize);
  pango_layout_set_font_description(layout,description);
  pango_font_description_free(description);
  property=InterpretImageProperties(image_info,image,image_info->filename);
  (void) SetImageProperty(image,"caption",property);
  property=DestroyString(property);
  caption=ConstantString(GetImageProperty(image,"caption"));
  /*
    Render caption.
  */
  option=GetImageOption(image_info,"caption:markup");
  if ((option != (const char *) NULL) && (IsMagickTrue(option) != MagickFalse))
    pango_layout_set_markup(layout,caption,-1);
  else
    pango_layout_set_text(layout,caption,-1);
  pango_layout_context_changed(layout);
  page.x=0;
  page.y=0;
  if (image_info->page != (char *) NULL)
    (void) ParseAbsoluteGeometry(image_info->page,&page);
  if (image->columns == 0)
    {
      pango_layout_get_pixel_extents(layout,NULL,&extent);
      image->columns=extent.x+extent.width;
    }
  else
    {
      image->columns-=2*page.x;
      pango_layout_set_width(layout,(PANGO_SCALE*image->columns*
        image->x_resolution+36.0)/72.0);
    }
  if (image->rows == 0)
    {
      pango_layout_get_pixel_extents(layout,NULL,&extent);
      image->rows=extent.y+extent.height;
    }
  else
    {
      image->rows-=2*page.y;
      pango_layout_set_height(layout,(PANGO_SCALE*image->rows*
        image->y_resolution+36.0)/72.0);
    }
  /*
    Create canvas.
  */
  canvas=(FT_Bitmap *) AcquireMagickMemory(sizeof(*canvas));
  if (canvas == (FT_Bitmap *) NULL)
    {
      draw_info=DestroyDrawInfo(draw_info);
      ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
    }
  canvas->width=image->columns;
  canvas->pitch=(canvas->width+3) & ~3;
  canvas->rows=image->rows;
  canvas->buffer=(unsigned char *) AcquireQuantumMemory(canvas->pitch,
    canvas->rows*sizeof(*canvas->buffer));
  if (canvas->buffer == (unsigned char *) NULL)
    {
      draw_info=DestroyDrawInfo(draw_info);
      canvas=(FT_Bitmap *) RelinquishMagickMemory(canvas);
      ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
    }
  canvas->num_grays=256;
  canvas->pixel_mode=ft_pixel_mode_grays;
  ResetMagickMemory(canvas->buffer,0x00,canvas->pitch*canvas->rows);
  pango_ft2_render_layout(canvas,layout,0,0);
  /*
    Convert caption to image.
  */
  image->columns+=2*page.x;
  image->rows+=2*page.y;
  if (SetImageBackgroundColor(image) == MagickFalse)
    {
      draw_info=DestroyDrawInfo(draw_info);
      canvas->buffer=(unsigned char *) RelinquishMagickMemory(canvas->buffer);
      canvas=(FT_Bitmap *) RelinquishMagickMemory(canvas);
      caption=DestroyString(caption);
      image=DestroyImageList(image);
      return((Image *) NULL);
    }
  p=canvas->buffer;
  for (y=page.y; y < (ssize_t) (image->rows-page.y); y++)
  {
    register ssize_t
      x;

    q=GetAuthenticPixels(image,0,y,image->columns,1,exception);
    if (q == (PixelPacket *) NULL)
      break;
    q+=page.x;
    for (x=page.x; x < (ssize_t) (image->columns-page.x); x++)
    {
      MagickRealType
        fill_opacity;

      (void) GetFillColor(draw_info,x,y,&fill_color);
      fill_opacity=QuantumRange-(*p)/canvas->num_grays*(QuantumRange-
        fill_color.opacity);
      if (draw_info->text_antialias == MagickFalse)
        fill_opacity=fill_opacity >= 0.5 ? 1.0 : 0.0;
      MagickCompositeOver(&fill_color,fill_opacity,q,q->opacity,q);
      p++;
      q++;
    }
    for ( ; x < (ssize_t) ((canvas->width+3) & ~3); x++)
      p++;
  }
  /*
    Relinquish resources.
  */
  draw_info=DestroyDrawInfo(draw_info);
  canvas->buffer=(unsigned char *) RelinquishMagickMemory(canvas->buffer);
  canvas=(FT_Bitmap *) RelinquishMagickMemory(canvas);
  caption=DestroyString(caption);
  return(GetFirstImageInList(image));
}
Example #18
0
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%                                                                             %
%                                                                             %
%                                                                             %
%   R e a d L A B E L I m a g e                                               %
%                                                                             %
%                                                                             %
%                                                                             %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%  ReadLABELImage() reads a LABEL 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 ReadLABELImage method is:
%
%      Image *ReadLABELImage(const ImageInfo *image_info,
%        ExceptionInfo *exception)
%
%  A description of each parameter follows:
%
%    o image_info: the image info.
%
%    o exception: return any errors or warnings in this structure.
%
*/
static Image *ReadLABELImage(const ImageInfo *image_info,
  ExceptionInfo *exception)
{
  char
    geometry[MaxTextExtent],
    *property;

  const char
    *label;

  DrawInfo
    *draw_info;

  Image
    *image;

  MagickBooleanType
    status;

  TypeMetric
    metrics;

  unsigned long
    height,
    width;

  /*
    Initialize Image structure.
  */
  assert(image_info != (const ImageInfo *) NULL);
  assert(image_info->signature == MagickSignature);
  if (image_info->debug != MagickFalse)
    (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
      image_info->filename);
  assert(exception != (ExceptionInfo *) NULL);
  assert(exception->signature == MagickSignature);
  image=AcquireImage(image_info);
  (void) ResetImagePage(image,"0x0+0+0");
  property=InterpretImageProperties(image_info,image,image_info->filename);
  (void) SetImageProperty(image,"label",property);
  property=DestroyString(property);
  label=GetImageProperty(image,"label");
  draw_info=CloneDrawInfo(image_info,(DrawInfo *) NULL);
  draw_info->text=ConstantString(label);
  if (((image->columns != 0) || (image->rows != 0)) &&
      (image_info->pointsize == 0.0))
    {
      /*
        Fit label to canvas size.
      */
      status=GetMultilineTypeMetrics(image,draw_info,&metrics);
      for ( ; status != MagickFalse; draw_info->pointsize*=2.0)
      {
        width=(unsigned long) (metrics.width+draw_info->stroke_width+0.5);
        height=(unsigned long) (metrics.height+draw_info->stroke_width+0.5);
        if (((image->columns != 0) && (width > (image->columns+1))) ||
            ((image->rows != 0) && (height > (image->rows+1))))
          break;
        status=GetMultilineTypeMetrics(image,draw_info,&metrics);
      }
      for ( ; status != MagickFalse; draw_info->pointsize--)
      {
        width=(unsigned long) (metrics.width+draw_info->stroke_width+0.5);
        height=(unsigned long) (metrics.height+draw_info->stroke_width+0.5);
        if ((image->columns != 0) && (width <= (image->columns+1)) &&
           ((image->rows == 0) || (height <= (image->rows+1))))
          break;
        if ((image->rows != 0) && (height <= (image->rows+1)) &&
           ((image->columns == 0) || (width <= (image->columns+1))))
          break;
        if (draw_info->pointsize < 2.0)
          break;
        status=GetMultilineTypeMetrics(image,draw_info,&metrics);
      }
    }
  status=GetMultilineTypeMetrics(image,draw_info,&metrics);
  if (status == MagickFalse)
    {
      InheritException(exception,&image->exception);
      image=DestroyImageList(image);
      return((Image *) NULL);
    }
  if (image->columns == 0)
    image->columns=(unsigned long) (metrics.width+draw_info->stroke_width+1.5);
  if (image->columns == 0)
    image->columns=(unsigned long) (draw_info->pointsize+
      draw_info->stroke_width+1.5);
  if (draw_info->gravity == UndefinedGravity)
    {
      (void) FormatMagickString(geometry,MaxTextExtent,"%+g%+g",
        -metrics.bounds.x1+draw_info->stroke_width/2.0,metrics.ascent+
        draw_info->stroke_width/2.0);
      draw_info->geometry=AcquireString(geometry);
    }
  if (image->rows == 0)
    image->rows=(unsigned long) (metrics.height+draw_info->stroke_width+0.5);
  if (image->rows == 0)
    image->rows=(unsigned long) (draw_info->pointsize+draw_info->stroke_width+
      0.5);
  if (SetImageBackgroundColor(image) == MagickFalse)
    {
      InheritException(exception,&image->exception);
      image=DestroyImageList(image);
      return((Image *) NULL);
    }
  (void) AnnotateImage(image,draw_info);
  draw_info=DestroyDrawInfo(draw_info);
  return(GetFirstImageInList(image));
}
Example #19
0
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%                                                                             %
%                                                                             %
%                                                                             %
%   R e a d H D R I m a g e                                                   %
%                                                                             %
%                                                                             %
%                                                                             %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%  ReadHDRImage() reads the Radiance RGBE image format 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 ReadHDRImage method is:
%
%      Image *ReadHDRImage(const ImageInfo *image_info,ExceptionInfo *exception)
%
%  A description of each parameter follows:
%
%    o image_info: the image info.
%
%    o exception: return any errors or warnings in this structure.
%
*/
static Image *ReadHDRImage(const ImageInfo *image_info,ExceptionInfo *exception)
{
  char
    format[MaxTextExtent],
    keyword[MaxTextExtent],
    tag[MaxTextExtent],
    value[MaxTextExtent];

  double
    gamma;

  Image
    *image;

  int
    c;

  MagickBooleanType
    status,
    value_expected;

  register PixelPacket
    *q;

  register unsigned char
    *p;

  register ssize_t
    i,
    x;

  ssize_t
    count,
    y;

  unsigned char
    *end,
    pixel[4],
    *pixels;

  /*
    Open image file.
  */
  assert(image_info != (const ImageInfo *) NULL);
  assert(image_info->signature == MagickSignature);
  if (image_info->debug != MagickFalse)
    (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
      image_info->filename);
  assert(exception != (ExceptionInfo *) NULL);
  assert(exception->signature == MagickSignature);
  image=AcquireImage(image_info);
  status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception);
  if (status == MagickFalse)
    {
      image=DestroyImageList(image);
      return((Image *) NULL);
    }
  /*
    Decode image header.
  */
  image->columns=0;
  image->rows=0;
  *format='\0';
  c=ReadBlobByte(image);
  if (c == EOF)
    {
      image=DestroyImage(image);
      return((Image *) NULL);
    }
  while (isgraph(c) && (image->columns == 0) && (image->rows == 0))
  {
    if (c == (int) '#')
      {
        char
          *comment;

        register char
          *p;

        size_t
          length;

        /*
          Read comment-- any text between # and end-of-line.
        */
        length=MaxTextExtent;
        comment=AcquireString((char *) NULL);
        for (p=comment; comment != (char *) NULL; p++)
        {
          c=ReadBlobByte(image);
          if ((c == EOF) || (c == (int) '\n'))
            break;
          if ((size_t) (p-comment+1) >= length)
            {
              *p='\0';
              length<<=1;
              comment=(char *) ResizeQuantumMemory(comment,length+
                MaxTextExtent,sizeof(*comment));
              if (comment == (char *) NULL)
                break;
              p=comment+strlen(comment);
            }
          *p=(char) c;
        }
        if (comment == (char *) NULL)
          ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
        *p='\0';
        (void) SetImageProperty(image,"comment",comment);
        comment=DestroyString(comment);
        c=ReadBlobByte(image);
      }
    else
      if (isalnum(c) == MagickFalse)
        c=ReadBlobByte(image);
      else
        {
          register char
            *p;

          /*
            Determine a keyword and its value.
          */
          p=keyword;
          do
          {
            if ((size_t) (p-keyword) < (MaxTextExtent-1))
              *p++=c;
            c=ReadBlobByte(image);
          } while (isalnum(c) || (c == '_'));
          *p='\0';
          value_expected=MagickFalse;
          while ((isspace((int) ((unsigned char) c)) != 0) || (c == '='))
          {
            if (c == '=')
              value_expected=MagickTrue;
            c=ReadBlobByte(image);
          }
          if (LocaleCompare(keyword,"Y") == 0)
            value_expected=MagickTrue;
          if (value_expected == MagickFalse)
            continue;
          p=value;
          while ((c != '\n') && (c != '\0') && (c != EOF))
          {
            if ((size_t) (p-value) < (MaxTextExtent-1))
              *p++=c;
            c=ReadBlobByte(image);
          }
          *p='\0';
          /*
            Assign a value to the specified keyword.
          */
          switch (*keyword)
          {
            case 'F':
            case 'f':
            {
              if (LocaleCompare(keyword,"format") == 0)
                {
                  (void) CopyMagickString(format,value,MaxTextExtent);
                  break;
                }
              (void) FormatLocaleString(tag,MaxTextExtent,"hdr:%s",keyword);
              (void) SetImageProperty(image,tag,value);
              break;
            }
            case 'G':
            case 'g':
            {
              if (LocaleCompare(keyword,"gamma") == 0)
                {
                  image->gamma=StringToDouble(value,(char **) NULL);
                  break;
                }
              (void) FormatLocaleString(tag,MaxTextExtent,"hdr:%s",keyword);
              (void) SetImageProperty(image,tag,value);
              break;
            }
            case 'P':
            case 'p':
            {
              if (LocaleCompare(keyword,"primaries") == 0)
                {
                  float
                    chromaticity[6],
                    white_point[2];

                  int
                    count;

                  count=sscanf(value,"%g %g %g %g %g %g %g %g",&chromaticity[0],
                    &chromaticity[1],&chromaticity[2],&chromaticity[3],
                    &chromaticity[4],&chromaticity[5],&white_point[0],
                    &white_point[1]);
                  if (count == 8)
                    {
                      image->chromaticity.red_primary.x=chromaticity[0];
                      image->chromaticity.red_primary.y=chromaticity[1];
                      image->chromaticity.green_primary.x=chromaticity[2];
                      image->chromaticity.green_primary.y=chromaticity[3];
                      image->chromaticity.blue_primary.x=chromaticity[4];
                      image->chromaticity.blue_primary.y=chromaticity[5];
                      image->chromaticity.white_point.x=white_point[0],
                      image->chromaticity.white_point.y=white_point[1];
                    }
                  break;
                }
              (void) FormatLocaleString(tag,MaxTextExtent,"hdr:%s",keyword);
              (void) SetImageProperty(image,tag,value);
              break;
            }
            case 'Y':
            case 'y':
            {
              char
                target[] = "Y";

              if (strcmp(keyword,target) == 0)
                {
                  int
                    height,
                    width;

                  if (sscanf(value,"%d +X %d",&height,&width) == 2)
                    {
                      image->columns=(size_t) width;
                      image->rows=(size_t) height;
                    }
                  break;
                }
              (void) FormatLocaleString(tag,MaxTextExtent,"hdr:%s",keyword);
              (void) SetImageProperty(image,tag,value);
              break;
            }
            default:
            {
              (void) FormatLocaleString(tag,MaxTextExtent,"hdr:%s",keyword);
              (void) SetImageProperty(image,tag,value);
              break;
            }
          }
        }
    if ((image->columns == 0) && (image->rows == 0))
      while (isspace((int) ((unsigned char) c)) != 0)
        c=ReadBlobByte(image);
  }
  if ((LocaleCompare(format,"32-bit_rle_rgbe") != 0) &&
      (LocaleCompare(format,"32-bit_rle_xyze") != 0))
    ThrowReaderException(CorruptImageError,"ImproperImageHeader");
  if ((image->columns == 0) || (image->rows == 0))
    ThrowReaderException(CorruptImageError,"NegativeOrZeroImageSize");
  (void) SetImageColorspace(image,RGBColorspace);
  if (LocaleCompare(format,"32-bit_rle_xyze") == 0)
    (void) SetImageColorspace(image,XYZColorspace);
  image->compression=(image->columns < 8) || (image->columns > 0x7ffff) ?
    NoCompression : RLECompression;
  if (image_info->ping != MagickFalse)
    {
      (void) CloseBlob(image);
      return(GetFirstImageInList(image));
    }
  status=SetImageExtent(image,image->columns,image->rows);
  if (status == MagickFalse)
    {
      InheritException(exception,&image->exception);
      return(DestroyImageList(image));
    }
  /*
    Read RGBE (red+green+blue+exponent) pixels.
  */
  pixels=(unsigned char *) AcquireQuantumMemory(image->columns,4*
    sizeof(*pixels));
  if (pixels == (unsigned char *) NULL)
    ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
  for (y=0; y < (ssize_t) image->rows; y++)
  {
    if (image->compression != RLECompression)
      {
        count=ReadBlob(image,4*image->columns*sizeof(*pixels),pixels);
        if (count != (ssize_t) (4*image->columns*sizeof(*pixels)))
          break;
      }
    else
      {
        count=ReadBlob(image,4*sizeof(*pixel),pixel);
        if (count != 4)
          break;
        if ((size_t) ((((size_t) pixel[2]) << 8) | pixel[3]) != image->columns)
          {
            (void) memcpy(pixels,pixel,4*sizeof(*pixel));
            (void) ReadBlob(image,4*(image->columns-1)*sizeof(*pixels),pixels+4);
            image->compression=NoCompression;
          }
        else
          {
            p=pixels;
            for (i=0; i < 4; i++)
            {
              end=&pixels[(i+1)*image->columns];
              while (p < end)
              {
                count=ReadBlob(image,2*sizeof(*pixel),pixel);
                if (count < 1)
                  break;
                if (pixel[0] > 128)
                  {
                    count=(ssize_t) pixel[0]-128;
                    if ((count == 0) || (count > (ssize_t) (end-p)))
                      break;
                    while (count-- > 0)
                      *p++=pixel[1];
                  }
                else
                  {
                    count=(ssize_t) pixel[0];
                    if ((count == 0) || (count > (ssize_t) (end-p)))
                      break;
                    *p++=pixel[1];
                    if (--count > 0)
                      {
                        count=ReadBlob(image,(size_t) count*sizeof(*p),p);
                        if (count < 1)
                          break;
                        p+=count;
                      }
                  }
              }
            }
          }
      }
    q=QueueAuthenticPixels(image,0,y,image->columns,1,exception);
    if (q == (PixelPacket *) NULL)
      break;
    i=0;
    for (x=0; x < (ssize_t) image->columns; x++)
    {
      if (image->compression == RLECompression)
        {
          pixel[0]=pixels[x];
          pixel[1]=pixels[x+image->columns];
          pixel[2]=pixels[x+2*image->columns];
          pixel[3]=pixels[x+3*image->columns];
        }
      else
        {
          pixel[0]=pixels[i++];
          pixel[1]=pixels[i++];
          pixel[2]=pixels[i++];
          pixel[3]=pixels[i++];
        }
      SetPixelRed(q,0);
      SetPixelGreen(q,0);
      SetPixelBlue(q,0);
      if (pixel[3] != 0)
        {
          gamma=pow(2.0,pixel[3]-(128.0+8.0));
          SetPixelRed(q,ClampToQuantum(QuantumRange*gamma*pixel[0]));
          SetPixelGreen(q,ClampToQuantum(QuantumRange*gamma*pixel[1]));
          SetPixelBlue(q,ClampToQuantum(QuantumRange*gamma*pixel[2]));
        }
      q++;
    }
    if (SyncAuthenticPixels(image,exception) == MagickFalse)
      break;
    status=SetImageProgress(image,LoadImageTag,(MagickOffsetType) y,
      image->rows);
    if (status == MagickFalse)
      break;
  }
  pixels=(unsigned char *) RelinquishMagickMemory(pixels);
  if (EOFBlob(image) != MagickFalse)
    ThrowFileException(exception,CorruptImageError,"UnexpectedEndOfFile",
      image->filename);
  (void) CloseBlob(image);
  return(GetFirstImageInList(image));
}
Example #20
0
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%                                                                             %
%                                                                             %
%                                                                             %
%   R e a d P A N G O I m a g e                                               %
%                                                                             %
%                                                                             %
%                                                                             %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%  ReadPANGOImage() reads an image in the Pango Markup Language Format.
%
%  The format of the ReadPANGOImage method is:
%
%      Image *ReadPANGOImage(const ImageInfo *image_info,
%        ExceptionInfo *exception)
%
%  A description of each parameter follows:
%
%    o image_info: the image info.
%
%    o exception: return any errors or warnings in this structure.
%
*/
static Image *ReadPANGOImage(const ImageInfo *image_info,
  ExceptionInfo *exception)
{
  cairo_font_options_t
    *font_options;

  cairo_surface_t
    *surface;

  char
    *caption,
    *property;

  cairo_t
    *cairo_image;

  const char
    *option;

  DrawInfo
    *draw_info;

  Image
    *image;

  MagickBooleanType
    status;

  PangoAlignment
    align;

  PangoContext
    *context;

  PangoFontMap
    *fontmap;

  PangoGravity
    gravity;

  PangoLayout
    *layout;

  PangoRectangle
    extent;

  PixelInfo
    fill_color;

  RectangleInfo
    page;

  register unsigned char
    *p;

  size_t
    stride;

  ssize_t
    y;

  unsigned char
    *pixels;

  /*
    Initialize Image structure.
  */
  assert(image_info != (const ImageInfo *) NULL);
  assert(image_info->signature == MagickSignature);
  if (image_info->debug != MagickFalse)
    (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
      image_info->filename);
  assert(exception != (ExceptionInfo *) NULL);
  assert(exception->signature == MagickSignature);
  image=AcquireImage(image_info,exception);
  (void) ResetImagePage(image,"0x0+0+0");
  /*
    Format caption.
  */
  option=GetImageArtifact(image,"filename");
  if (option == (const char *) NULL)
    property=InterpretImageProperties(image_info,image,image_info->filename,
      exception);
  else
    if (LocaleNCompare(option,"pango:",6) == 0)
      property=InterpretImageProperties(image_info,image,option+6,exception);
    else
      property=InterpretImageProperties(image_info,image,option,exception);
  (void) SetImageProperty(image,"caption",property,exception);
  property=DestroyString(property);
  caption=ConstantString(GetImageProperty(image,"caption",exception));
  /*
    Get context.
  */
  fontmap=pango_cairo_font_map_new();
  pango_cairo_font_map_set_resolution(PANGO_CAIRO_FONT_MAP(fontmap),
    image->resolution.x == 0.0 ? 90.0 : image->resolution.x);
  font_options=cairo_font_options_create();
  option=GetImageArtifact(image,"pango:hinting");
  if (option != (const char *) NULL)
    {
      if (LocaleCompare(option,"none") != 0)
        cairo_font_options_set_hint_style(font_options,CAIRO_HINT_STYLE_NONE);
      if (LocaleCompare(option,"full") != 0)
        cairo_font_options_set_hint_style(font_options,CAIRO_HINT_STYLE_FULL);
    }
  context=pango_font_map_create_context(fontmap);
  pango_cairo_context_set_font_options(context,font_options);
  cairo_font_options_destroy(font_options);
  option=GetImageArtifact(image,"pango:language");
  if (option != (const char *) NULL)
    pango_context_set_language(context,pango_language_from_string(option));
  draw_info=CloneDrawInfo(image_info,(DrawInfo *) NULL);
  pango_context_set_base_dir(context,draw_info->direction ==
    RightToLeftDirection ? PANGO_DIRECTION_RTL : PANGO_DIRECTION_LTR);
  switch (draw_info->gravity)
  {
    case NorthGravity:
    {
      gravity=PANGO_GRAVITY_NORTH;
      break;
    }
    case NorthWestGravity:
    case WestGravity:
    case SouthWestGravity:
    {
      gravity=PANGO_GRAVITY_WEST;
      break;
    }
    case NorthEastGravity:
    case EastGravity:
    case SouthEastGravity:
    {
      gravity=PANGO_GRAVITY_EAST;
      break;
    }
    case SouthGravity:
    {
      gravity=PANGO_GRAVITY_SOUTH;
      break;
    }
    default:
    {
      gravity=PANGO_GRAVITY_AUTO;
      break;
    }
  }
  pango_context_set_base_gravity(context,gravity);
  option=GetImageArtifact(image,"pango:gravity-hint");
  if (option != (const char *) NULL)
    {
      if (LocaleCompare(option,"line") == 0)
        pango_context_set_gravity_hint(context,PANGO_GRAVITY_HINT_LINE);
      if (LocaleCompare(option,"natural") == 0)
        pango_context_set_gravity_hint(context,PANGO_GRAVITY_HINT_NATURAL);
      if (LocaleCompare(option,"strong") == 0)
        pango_context_set_gravity_hint(context,PANGO_GRAVITY_HINT_STRONG);
    }
  /*
    Configure layout.
  */
  layout=pango_layout_new(context);
  option=GetImageArtifact(image,"pango:auto-dir");
  if (option != (const char *) NULL)
    pango_layout_set_auto_dir(layout,1);
  option=GetImageArtifact(image,"pango:ellipsize");
  if (option != (const char *) NULL)
    {
      if (LocaleCompare(option,"end") == 0)
        pango_layout_set_ellipsize(layout,PANGO_ELLIPSIZE_END);
      if (LocaleCompare(option,"middle") == 0)
        pango_layout_set_ellipsize(layout,PANGO_ELLIPSIZE_MIDDLE);
      if (LocaleCompare(option,"none") == 0)
        pango_layout_set_ellipsize(layout,PANGO_ELLIPSIZE_NONE);
      if (LocaleCompare(option,"start") == 0)
        pango_layout_set_ellipsize(layout,PANGO_ELLIPSIZE_START);
    }
  option=GetImageArtifact(image,"pango:justify");
  if (IfMagickTrue(IsStringTrue(option)))
    pango_layout_set_justify(layout,1);
  option=GetImageArtifact(image,"pango:single-paragraph");
  if (IfMagickTrue(IsStringTrue(option)))
    pango_layout_set_single_paragraph_mode(layout,1);
  option=GetImageArtifact(image,"pango:wrap");
  if (option != (const char *) NULL)
    {
      if (LocaleCompare(option,"char") == 0)
        pango_layout_set_wrap(layout,PANGO_WRAP_CHAR);
      if (LocaleCompare(option,"word") == 0)
        pango_layout_set_wrap(layout,PANGO_WRAP_WORD);
      if (LocaleCompare(option,"word-char") == 0)
        pango_layout_set_wrap(layout,PANGO_WRAP_WORD_CHAR);
    }
  option=GetImageArtifact(image,"pango:indent");
  if (option != (const char *) NULL)
    pango_layout_set_indent(layout,(int) ((StringToLong(option)*
      (image->resolution.x == 0.0 ? 90.0 : image->resolution.x)*PANGO_SCALE+36)/
      90.0+0.5));
  switch (draw_info->align)
  {
    case CenterAlign: align=PANGO_ALIGN_CENTER; break;
    case RightAlign: align=PANGO_ALIGN_RIGHT; break;
    case LeftAlign: align=PANGO_ALIGN_LEFT; break;
    default:
    {
      if (draw_info->gravity == CenterGravity)
        {
          align=PANGO_ALIGN_CENTER;
          break;
        }
      align=PANGO_ALIGN_LEFT;
      break;
    }
  }
  if ((align != PANGO_ALIGN_CENTER) &&
      (draw_info->direction == RightToLeftDirection))
    align=(PangoAlignment) (PANGO_ALIGN_LEFT+PANGO_ALIGN_RIGHT-align);
  pango_layout_set_alignment(layout,align);
  if (draw_info->font != (char *) NULL)
    {
      PangoFontDescription
        *description;

      /*
        Set font.
      */
      description=pango_font_description_from_string(draw_info->font);
      pango_font_description_set_size(description,(int) (PANGO_SCALE*
        draw_info->pointsize+0.5));
      pango_layout_set_font_description(layout,description);
      pango_font_description_free(description);
    }
  option=GetImageArtifact(image,"pango:markup");
  if ((option != (const char *) NULL) && (IsStringTrue(option) == MagickFalse))
    pango_layout_set_text(layout,caption,-1);
  else
    {
      GError
        *error;

      error=(GError *) NULL;
      if (pango_parse_markup(caption,-1,0,NULL,NULL,NULL,&error) == 0)
        (void) ThrowMagickException(exception,GetMagickModule(),CoderError,
          error->message,"`%s'",image_info->filename);
      pango_layout_set_markup(layout,caption,-1);
    }
  pango_layout_context_changed(layout);
  page.x=0;
  page.y=0;
  if (image_info->page != (char *) NULL)
    (void) ParseAbsoluteGeometry(image_info->page,&page);
  if (image->columns == 0)
    {
      pango_layout_get_extents(layout,NULL,&extent);
      image->columns=(extent.x+extent.width+PANGO_SCALE/2)/PANGO_SCALE+2*page.x;
    }
  else
    {
      image->columns-=2*page.x;
      pango_layout_set_width(layout,(int) ((PANGO_SCALE*image->columns*
        (image->resolution.x == 0.0 ? 90.0 : image->resolution.x)+45.0)/90.0+
        0.5));
    }
  if (image->rows == 0)
    {
      pango_layout_get_extents(layout,NULL,&extent);
      image->rows=(extent.y+extent.height+PANGO_SCALE/2)/PANGO_SCALE+2*page.y;
    }
  else
    {
      image->rows-=2*page.y;
      pango_layout_set_height(layout,(int) ((PANGO_SCALE*image->rows*
        (image->resolution.y == 0.0 ? 90.0 : image->resolution.y)+45.0)/90.0+
        0.5));
    }
  /*
    Render markup.
  */
  stride=(size_t) cairo_format_stride_for_width(CAIRO_FORMAT_ARGB32,
    image->columns);
  pixels=(unsigned char *) AcquireQuantumMemory(image->rows,stride*
    sizeof(*pixels));
  if (pixels == (unsigned char *) NULL)
    {
      draw_info=DestroyDrawInfo(draw_info);
      caption=DestroyString(caption);
      ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
    }
  surface=cairo_image_surface_create_for_data(pixels,CAIRO_FORMAT_ARGB32,
    image->columns,image->rows,stride);
  cairo_image=cairo_create(surface);
  cairo_set_operator(cairo_image,CAIRO_OPERATOR_CLEAR);
  cairo_paint(cairo_image);
  cairo_set_operator(cairo_image,CAIRO_OPERATOR_OVER);
  cairo_translate(cairo_image,page.x,page.y);
  pango_cairo_show_layout(cairo_image,layout);
  cairo_destroy(cairo_image);
  cairo_surface_destroy(surface);
  g_object_unref(layout);
  g_object_unref(fontmap);
  /*
    Convert surface to image.
  */
  (void) SetImageBackgroundColor(image,exception);
  p=pixels;
  GetPixelInfo(image,&fill_color);
  for (y=0; y < (ssize_t) image->rows; y++)
  {
    register Quantum
      *q;

    register ssize_t
      x;

    q=GetAuthenticPixels(image,0,y,image->columns,1,exception);
    if (q == (Quantum *) NULL)
      break;
    for (x=0; x < (ssize_t) image->columns; x++)
    {
      double
        gamma;

      fill_color.blue=(double) ScaleCharToQuantum(*p++);
      fill_color.green=(double) ScaleCharToQuantum(*p++);
      fill_color.red=(double) ScaleCharToQuantum(*p++);
      fill_color.alpha=(double) ScaleCharToQuantum(*p++);
      /*
        Disassociate alpha.
      */
      gamma=1.0-QuantumScale*fill_color.alpha;
      gamma=PerceptibleReciprocal(gamma);
      fill_color.blue*=gamma;
      fill_color.green*=gamma;
      fill_color.red*=gamma;
      CompositePixelOver(image,&fill_color,fill_color.alpha,q,(double)
        GetPixelAlpha(image,q),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;
      }
  }
  /*
    Relinquish resources.
  */
  pixels=(unsigned char *) RelinquishMagickMemory(pixels);
  draw_info=DestroyDrawInfo(draw_info);
  caption=DestroyString(caption);
  return(GetFirstImageInList(image));
}
Example #21
0
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%                                                                             %
%                                                                             %
%                                                                             %
%   R e a d V I F F I m a g e                                                 %
%                                                                             %
%                                                                             %
%                                                                             %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%  ReadVIFFImage() reads a Khoros Visualization 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 ReadVIFFImage method is:
%
%      Image *ReadVIFFImage(const ImageInfo *image_info,
%        ExceptionInfo *exception)
%
%  A description of each parameter follows:
%
%    o image: Method ReadVIFFImage returns a pointer to the image after
%      reading.  A null image is returned if there is a memory shortage or if
%      the image cannot be read.
%
%    o image_info: the image info.
%
%    o exception: return any errors or warnings in this structure.
%
*/
static Image *ReadVIFFImage(const ImageInfo *image_info,
  ExceptionInfo *exception)
{
#define VFF_CM_genericRGB  15
#define VFF_CM_ntscRGB  1
#define VFF_CM_NONE  0
#define VFF_DEP_DECORDER  0x4
#define VFF_DEP_NSORDER  0x8
#define VFF_DES_RAW  0
#define VFF_LOC_IMPLICIT  1
#define VFF_MAPTYP_NONE  0
#define VFF_MAPTYP_1_BYTE  1
#define VFF_MAPTYP_2_BYTE  2
#define VFF_MAPTYP_4_BYTE  4
#define VFF_MAPTYP_FLOAT  5
#define VFF_MAPTYP_DOUBLE  7
#define VFF_MS_NONE  0
#define VFF_MS_ONEPERBAND  1
#define VFF_MS_SHARED  3
#define VFF_TYP_BIT  0
#define VFF_TYP_1_BYTE  1
#define VFF_TYP_2_BYTE  2
#define VFF_TYP_4_BYTE  4
#define VFF_TYP_FLOAT  5
#define VFF_TYP_DOUBLE  9

  typedef struct _ViffInfo
  {
    unsigned char
      identifier,
      file_type,
      release,
      version,
      machine_dependency,
      reserve[3];

    char
      comment[512];

    unsigned int
      rows,
      columns,
      subrows;

    int
      x_offset,
      y_offset;

    float
      x_bits_per_pixel,
      y_bits_per_pixel;

    unsigned int
      location_type,
      location_dimension,
      number_of_images,
      number_data_bands,
      data_storage_type,
      data_encode_scheme,
      map_scheme,
      map_storage_type,
      map_rows,
      map_columns,
      map_subrows,
      map_enable,
      maps_per_cycle,
      color_space_model;
  } ViffInfo;

  double
    min_value,
    scale_factor,
    value;

  Image
    *image;

  int
    bit;

  ssize_t
    y;

  MagickBooleanType
    status;

  MagickSizeType
    number_pixels;

  register IndexPacket
    *indexes;

  register ssize_t
    x;

  register PixelPacket
    *q;

  register ssize_t
    i;

  register unsigned char
    *p;

  ssize_t
    count;

  unsigned char
    buffer[7],
    *viff_pixels;

  size_t
    bytes_per_pixel,
    lsb_first,
    max_packets,
    quantum;

  ViffInfo
    viff_info;

  /*
    Open image file.
  */
  assert(image_info != (const ImageInfo *) NULL);
  assert(image_info->signature == MagickSignature);
  if (image_info->debug != MagickFalse)
    (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
      image_info->filename);
  assert(exception != (ExceptionInfo *) NULL);
  assert(exception->signature == MagickSignature);
  image=AcquireImage(image_info);
  status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception);
  if (status == MagickFalse)
    {
      image=DestroyImageList(image);
      return((Image *) NULL);
    }
  /*
    Read VIFF header (1024 bytes).
  */
  count=ReadBlob(image,1,&viff_info.identifier);
  do
  {
    /*
      Verify VIFF identifier.
    */
    if ((count == 0) || ((unsigned char) viff_info.identifier != 0xab))
      ThrowReaderException(CorruptImageError,"NotAVIFFImage");
    /*
      Initialize VIFF image.
    */
    count=ReadBlob(image,7,buffer);
    viff_info.file_type=buffer[0];
    viff_info.release=buffer[1];
    viff_info.version=buffer[2];
    viff_info.machine_dependency=buffer[3];
    count=ReadBlob(image,512,(unsigned char *) viff_info.comment);
    viff_info.comment[511]='\0';
    if (strlen(viff_info.comment) > 4)
      (void) SetImageProperty(image,"comment",viff_info.comment);
    if ((viff_info.machine_dependency == VFF_DEP_DECORDER) ||
        (viff_info.machine_dependency == VFF_DEP_NSORDER))
      {
        viff_info.rows=ReadBlobLSBLong(image);
        viff_info.columns=ReadBlobLSBLong(image);
        viff_info.subrows=ReadBlobLSBLong(image);
        viff_info.x_offset=(int) ReadBlobLSBLong(image);
        viff_info.y_offset=(int) ReadBlobLSBLong(image);
        viff_info.x_bits_per_pixel=(float) ReadBlobLSBLong(image);
        viff_info.y_bits_per_pixel=(float) ReadBlobLSBLong(image);
        viff_info.location_type=ReadBlobLSBLong(image);
        viff_info.location_dimension=ReadBlobLSBLong(image);
        viff_info.number_of_images=ReadBlobLSBLong(image);
        viff_info.number_data_bands=ReadBlobLSBLong(image);
        viff_info.data_storage_type=ReadBlobLSBLong(image);
        viff_info.data_encode_scheme=ReadBlobLSBLong(image);
        viff_info.map_scheme=ReadBlobLSBLong(image);
        viff_info.map_storage_type=ReadBlobLSBLong(image);
        viff_info.map_rows=ReadBlobLSBLong(image);
        viff_info.map_columns=ReadBlobLSBLong(image);
        viff_info.map_subrows=ReadBlobLSBLong(image);
        viff_info.map_enable=ReadBlobLSBLong(image);
        viff_info.maps_per_cycle=ReadBlobLSBLong(image);
        viff_info.color_space_model=ReadBlobLSBLong(image);
      }
    else
      {
        viff_info.rows=ReadBlobMSBLong(image);
        viff_info.columns=ReadBlobMSBLong(image);
        viff_info.subrows=ReadBlobMSBLong(image);
        viff_info.x_offset=(int) ReadBlobMSBLong(image);
        viff_info.y_offset=(int) ReadBlobMSBLong(image);
        viff_info.x_bits_per_pixel=(float) ReadBlobMSBLong(image);
        viff_info.y_bits_per_pixel=(float) ReadBlobMSBLong(image);
        viff_info.location_type=ReadBlobMSBLong(image);
        viff_info.location_dimension=ReadBlobMSBLong(image);
        viff_info.number_of_images=ReadBlobMSBLong(image);
        viff_info.number_data_bands=ReadBlobMSBLong(image);
        viff_info.data_storage_type=ReadBlobMSBLong(image);
        viff_info.data_encode_scheme=ReadBlobMSBLong(image);
        viff_info.map_scheme=ReadBlobMSBLong(image);
        viff_info.map_storage_type=ReadBlobMSBLong(image);
        viff_info.map_rows=ReadBlobMSBLong(image);
        viff_info.map_columns=ReadBlobMSBLong(image);
        viff_info.map_subrows=ReadBlobMSBLong(image);
        viff_info.map_enable=ReadBlobMSBLong(image);
        viff_info.maps_per_cycle=ReadBlobMSBLong(image);
        viff_info.color_space_model=ReadBlobMSBLong(image);
      }
    for (i=0; i < 420; i++)
      (void) ReadBlobByte(image);
    image->columns=viff_info.rows;
    image->rows=viff_info.columns;
    image->depth=viff_info.x_bits_per_pixel <= 8 ? 8UL : MAGICKCORE_QUANTUM_DEPTH;
    /*
      Verify that we can read this VIFF image.
    */
    number_pixels=(MagickSizeType) viff_info.columns*viff_info.rows;
    if (number_pixels != (size_t) number_pixels)
      ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
    if (number_pixels == 0)
      ThrowReaderException(CoderError,"ImageColumnOrRowSizeIsNotSupported");
    if ((viff_info.number_data_bands < 1) || (viff_info.number_data_bands > 4))
      ThrowReaderException(CorruptImageError,"ImproperImageHeader");
    if ((viff_info.data_storage_type != VFF_TYP_BIT) &&
        (viff_info.data_storage_type != VFF_TYP_1_BYTE) &&
        (viff_info.data_storage_type != VFF_TYP_2_BYTE) &&
        (viff_info.data_storage_type != VFF_TYP_4_BYTE) &&
        (viff_info.data_storage_type != VFF_TYP_FLOAT) &&
        (viff_info.data_storage_type != VFF_TYP_DOUBLE))
      ThrowReaderException(CoderError,"DataStorageTypeIsNotSupported");
    if (viff_info.data_encode_scheme != VFF_DES_RAW)
      ThrowReaderException(CoderError,"DataEncodingSchemeIsNotSupported");
    if ((viff_info.map_storage_type != VFF_MAPTYP_NONE) &&
        (viff_info.map_storage_type != VFF_MAPTYP_1_BYTE) &&
        (viff_info.map_storage_type != VFF_MAPTYP_2_BYTE) &&
        (viff_info.map_storage_type != VFF_MAPTYP_4_BYTE) &&
        (viff_info.map_storage_type != VFF_MAPTYP_FLOAT) &&
        (viff_info.map_storage_type != VFF_MAPTYP_DOUBLE))
      ThrowReaderException(CoderError,"MapStorageTypeIsNotSupported");
    if ((viff_info.color_space_model != VFF_CM_NONE) &&
        (viff_info.color_space_model != VFF_CM_ntscRGB) &&
        (viff_info.color_space_model != VFF_CM_genericRGB))
      ThrowReaderException(CoderError,"ColorspaceModelIsNotSupported");
    if (viff_info.location_type != VFF_LOC_IMPLICIT)
      ThrowReaderException(CoderError,"LocationTypeIsNotSupported");
    if (viff_info.number_of_images != 1)
      ThrowReaderException(CoderError,"NumberOfImagesIsNotSupported");
    if (viff_info.map_rows == 0)
      viff_info.map_scheme=VFF_MS_NONE;
    switch ((int) viff_info.map_scheme)
    {
      case VFF_MS_NONE:
      {
        if (viff_info.number_data_bands < 3)
          {
            /*
              Create linear color ramp.
            */
            image->colors=image->depth <= 8 ? 256UL : 65536UL;
            if (viff_info.data_storage_type == VFF_TYP_BIT)
              image->colors=2;
            if (AcquireImageColormap(image,image->colors) == MagickFalse)
              ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
          }
        break;
      }
      case VFF_MS_ONEPERBAND:
      case VFF_MS_SHARED:
      {
        unsigned char
          *viff_colormap;

        /*
          Allocate VIFF colormap.
        */
        switch ((int) viff_info.map_storage_type)
        {
          case VFF_MAPTYP_1_BYTE: bytes_per_pixel=1; break;
          case VFF_MAPTYP_2_BYTE: bytes_per_pixel=2; break;
          case VFF_MAPTYP_4_BYTE: bytes_per_pixel=4; break;
          case VFF_MAPTYP_FLOAT: bytes_per_pixel=4; break;
          case VFF_MAPTYP_DOUBLE: bytes_per_pixel=8; break;
          default: bytes_per_pixel=1; break;
        }
        image->colors=viff_info.map_columns;
        if (AcquireImageColormap(image,image->colors) == MagickFalse)
          ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
        viff_colormap=(unsigned char *) AcquireQuantumMemory(image->colors,
          viff_info.map_rows*bytes_per_pixel*sizeof(*viff_colormap));
        if (viff_colormap == (unsigned char *) NULL)
          ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
        /*
          Read VIFF raster colormap.
        */
        count=ReadBlob(image,bytes_per_pixel*image->colors*viff_info.map_rows,
          viff_colormap);
        lsb_first=1;
        if (*(char *) &lsb_first &&
            ((viff_info.machine_dependency != VFF_DEP_DECORDER) &&
             (viff_info.machine_dependency != VFF_DEP_NSORDER)))
          switch ((int) viff_info.map_storage_type)
          {
            case VFF_MAPTYP_2_BYTE:
            {
              MSBOrderShort(viff_colormap,(bytes_per_pixel*image->colors*
                viff_info.map_rows));
              break;
            }
            case VFF_MAPTYP_4_BYTE:
            case VFF_MAPTYP_FLOAT:
            {
              MSBOrderLong(viff_colormap,(bytes_per_pixel*image->colors*
                viff_info.map_rows));
              break;
            }
            default: break;
          }
        for (i=0; i < (ssize_t) (viff_info.map_rows*image->colors); i++)
        {
          switch ((int) viff_info.map_storage_type)
          {
            case VFF_MAPTYP_2_BYTE: value=1.0*((short *) viff_colormap)[i]; break;
            case VFF_MAPTYP_4_BYTE: value=1.0*((int *) viff_colormap)[i]; break;
            case VFF_MAPTYP_FLOAT: value=((float *) viff_colormap)[i]; break;
            case VFF_MAPTYP_DOUBLE: value=((double *) viff_colormap)[i]; break;
            default: value=1.0*viff_colormap[i]; break;
          }
          if (i < (ssize_t) image->colors)
            {
              image->colormap[i].red=ScaleCharToQuantum((unsigned char) value);
              image->colormap[i].green=
                ScaleCharToQuantum((unsigned char) value);
              image->colormap[i].blue=ScaleCharToQuantum((unsigned char) value);
            }
          else
            if (i < (ssize_t) (2*image->colors))
              image->colormap[i % image->colors].green=
                ScaleCharToQuantum((unsigned char) value);
            else
              if (i < (ssize_t) (3*image->colors))
                image->colormap[i % image->colors].blue=
                  ScaleCharToQuantum((unsigned char) value);
        }
        viff_colormap=(unsigned char *) RelinquishMagickMemory(viff_colormap);
        break;
      }
      default:
        ThrowReaderException(CoderError,"ColormapTypeNotSupported");
    }
    /*
      Initialize image structure.
    */
    image->matte=viff_info.number_data_bands == 4 ? MagickTrue : MagickFalse;
    image->storage_class=
      (viff_info.number_data_bands < 3 ? PseudoClass : DirectClass);
    image->columns=viff_info.rows;
    image->rows=viff_info.columns;
    if ((image_info->ping != MagickFalse) && (image_info->number_scenes != 0))
      if (image->scene >= (image_info->scene+image_info->number_scenes-1))
        break;
    /*
      Allocate VIFF pixels.
    */
    switch ((int) viff_info.data_storage_type)
    {
      case VFF_TYP_2_BYTE: bytes_per_pixel=2; break;
      case VFF_TYP_4_BYTE: bytes_per_pixel=4; break;
      case VFF_TYP_FLOAT: bytes_per_pixel=4; break;
      case VFF_TYP_DOUBLE: bytes_per_pixel=8; break;
      default: bytes_per_pixel=1; break;
    }
    if (viff_info.data_storage_type == VFF_TYP_BIT)
      max_packets=((image->columns+7UL) >> 3UL)*image->rows;
    else
      max_packets=(size_t) (number_pixels*viff_info.number_data_bands);
    viff_pixels=(unsigned char *) AcquireQuantumMemory(max_packets,
      bytes_per_pixel*sizeof(*viff_pixels));
    if (viff_pixels == (unsigned char *) NULL)
      ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
    count=ReadBlob(image,bytes_per_pixel*max_packets,viff_pixels);
    lsb_first=1;
    if (*(char *) &lsb_first &&
        ((viff_info.machine_dependency != VFF_DEP_DECORDER) &&
         (viff_info.machine_dependency != VFF_DEP_NSORDER)))
      switch ((int) viff_info.data_storage_type)
      {
        case VFF_TYP_2_BYTE:
        {
          MSBOrderShort(viff_pixels,bytes_per_pixel*max_packets);
          break;
        }
        case VFF_TYP_4_BYTE:
        case VFF_TYP_FLOAT:
        {
          MSBOrderLong(viff_pixels,bytes_per_pixel*max_packets);
          break;
        }
        default: break;
      }
    min_value=0.0;
    scale_factor=1.0;
    if ((viff_info.data_storage_type != VFF_TYP_1_BYTE) &&
        (viff_info.map_scheme == VFF_MS_NONE))
      {
        double
          max_value;

        /*
          Determine scale factor.
        */
        switch ((int) viff_info.data_storage_type)
        {
          case VFF_TYP_2_BYTE: value=1.0*((short *) viff_pixels)[0]; break;
          case VFF_TYP_4_BYTE: value=1.0*((int *) viff_pixels)[0]; break;
          case VFF_TYP_FLOAT: value=((float *) viff_pixels)[0]; break;
          case VFF_TYP_DOUBLE: value=((double *) viff_pixels)[0]; break;
          default: value=1.0*viff_pixels[0]; break;
        }
        max_value=value;
        min_value=value;
        for (i=0; i < (ssize_t) max_packets; i++)
        {
          switch ((int) viff_info.data_storage_type)
          {
            case VFF_TYP_2_BYTE: value=1.0*((short *) viff_pixels)[i]; break;
            case VFF_TYP_4_BYTE: value=1.0*((int *) viff_pixels)[i]; break;
            case VFF_TYP_FLOAT: value=((float *) viff_pixels)[i]; break;
            case VFF_TYP_DOUBLE: value=((double *) viff_pixels)[i]; break;
            default: value=1.0*viff_pixels[i]; break;
          }
          if (value > max_value)
            max_value=value;
          else
            if (value < min_value)
              min_value=value;
        }
        if ((min_value == 0) && (max_value == 0))
          scale_factor=0;
        else
          if (min_value == max_value)
            {
              scale_factor=(MagickRealType) QuantumRange/min_value;
              min_value=0;
            }
          else
            scale_factor=(MagickRealType) QuantumRange/(max_value-min_value);
      }
    /*
      Convert pixels to Quantum size.
    */
    p=(unsigned char *) viff_pixels;
    for (i=0; i < (ssize_t) max_packets; i++)
    {
      switch ((int) viff_info.data_storage_type)
      {
        case VFF_TYP_2_BYTE: value=1.0*((short *) viff_pixels)[i]; break;
        case VFF_TYP_4_BYTE: value=1.0*((int *) viff_pixels)[i]; break;
        case VFF_TYP_FLOAT: value=((float *) viff_pixels)[i]; break;
        case VFF_TYP_DOUBLE: value=((double *) viff_pixels)[i]; break;
        default: value=1.0*viff_pixels[i]; break;
      }
      if (viff_info.map_scheme == VFF_MS_NONE)
        {
          value=(value-min_value)*scale_factor;
          if (value > QuantumRange)
            value=QuantumRange;
          else
            if (value < 0)
              value=0;
        }
      *p=(unsigned char) value;
      p++;
    }
    /*
      Convert VIFF raster image to pixel packets.
    */
    p=(unsigned char *) viff_pixels;
    if (viff_info.data_storage_type == VFF_TYP_BIT)
      {
        /*
          Convert bitmap scanline.
        */
        (void) SetImageType(image,BilevelType);
        (void) SetImageType(image,PaletteType);
        for (y=0; y < (ssize_t) image->rows; y++)
        {
          q=QueueAuthenticPixels(image,0,y,image->columns,1,exception);
          if (q == (PixelPacket *) NULL)
            break;
          indexes=GetAuthenticIndexQueue(image);
          for (x=0; x < (ssize_t) (image->columns-7); x+=8)
          {
            for (bit=0; bit < 8; bit++)
              if (PixelIntensity(q) < ((MagickRealType) QuantumRange/2.0))
                {
                  quantum=(size_t) indexes[x+bit];
                  quantum|=0x01;
                  indexes[x+bit]=(IndexPacket) quantum;
                }
            p++;
          }
          if ((image->columns % 8) != 0)
            {
              for (bit=0; bit < (ssize_t) (image->columns % 8); bit++)
                if (PixelIntensity(q) < ((MagickRealType) QuantumRange/2.0))
                  {
                    quantum=(size_t) indexes[x+bit];
                    quantum|=0x01;
                    indexes[x+bit]=(IndexPacket) quantum;
                  }
              p++;
            }
          if (SyncAuthenticPixels(image,exception) == MagickFalse)
            break;
          if (image->previous == (Image *) NULL)
            {
              status=SetImageProgress(image,LoadImageTag,(MagickOffsetType) y,
                image->rows);
              if (status == MagickFalse)
                break;
            }
        }
      }
    else
      if (image->storage_class == PseudoClass)
        for (y=0; y < (ssize_t) image->rows; y++)
        {
          q=QueueAuthenticPixels(image,0,y,image->columns,1,exception);
          if (q == (PixelPacket *) NULL)
            break;
          indexes=GetAuthenticIndexQueue(image);
          for (x=0; x < (ssize_t) image->columns; x++)
            indexes[x]=(IndexPacket) (*p++);
          if (SyncAuthenticPixels(image,exception) == MagickFalse)
            break;
          if (image->previous == (Image *) NULL)
            {
              status=SetImageProgress(image,LoadImageTag,(MagickOffsetType) y,
                image->rows);
              if (status == MagickFalse)
                break;
            }
        }
      else
        {
          /*
            Convert DirectColor scanline.
          */
          number_pixels=(MagickSizeType) image->columns*image->rows;
          for (y=0; y < (ssize_t) image->rows; y++)
          {
            q=QueueAuthenticPixels(image,0,y,image->columns,1,exception);
            if (q == (PixelPacket *) NULL)
              break;
            for (x=0; x < (ssize_t) image->columns; x++)
            {
              q->red=ScaleCharToQuantum(*p);
              q->green=ScaleCharToQuantum(*(p+number_pixels));
              q->blue=ScaleCharToQuantum(*(p+2*number_pixels));
              if (image->colors != 0)
                {
                  q->red=image->colormap[(ssize_t) q->red].red;
                  q->green=image->colormap[(ssize_t) q->green].green;
                  q->blue=image->colormap[(ssize_t) q->blue].blue;
                }
              q->opacity=(Quantum) (image->matte ? QuantumRange-
                ScaleCharToQuantum(*(p+number_pixels*3)) : OpaqueOpacity);
              p++;
              q++;
            }
            if (SyncAuthenticPixels(image,exception) == MagickFalse)
              break;
            if (image->previous == (Image *) NULL)
              {
                status=SetImageProgress(image,LoadImageTag,(MagickOffsetType) y,
                image->rows);
                if (status == MagickFalse)
                  break;
              }
          }
        }
    viff_pixels=(unsigned char *) RelinquishMagickMemory(viff_pixels);
    if (image->storage_class == PseudoClass)
      (void) SyncImage(image);
    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;
    count=ReadBlob(image,1,&viff_info.identifier);
    if ((count != 0) && (viff_info.identifier == 0xab))
      {
        /*
          Allocate next image structure.
        */
        AcquireNextImage(image_info,image);
        if (GetNextImageInList(image) == (Image *) NULL)
          {
            image=DestroyImageList(image);
            return((Image *) NULL);
          }
        image=SyncNextImageInList(image);
        status=SetImageProgress(image,LoadImagesTag,TellBlob(image),
          GetBlobSize(image));
        if (status == MagickFalse)
          break;
      }
  } while ((count != 0) && (viff_info.identifier == 0xab));
Example #22
0
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%                                                                             %
%                                                                             %
%                                                                             %
%   S i g n a t u r e I m a g e                                               %
%                                                                             %
%                                                                             %
%                                                                             %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%  SignatureImage() computes a message digest from an image pixel stream with
%  an implementation of the NIST SHA-256 Message Digest algorithm.  This
%  signature uniquely identifies the image and is convenient for determining
%  if an image has been modified or whether two images are identical.
%
%  The format of the SignatureImage method is:
%
%      MagickBooleanType SignatureImage(Image *image,ExceptionInfo *exception)
%
%  A description of each parameter follows:
%
%    o image: the image.
%
%    o exception: return any errors or warnings in this structure.
%
*/
MagickExport MagickBooleanType SignatureImage(Image *image,
  ExceptionInfo *exception)
{
  CacheView
    *image_view;

  char
    *hex_signature;

  double
    pixel;

  register const Quantum
    *p;

  SignatureInfo
    *signature_info;

  ssize_t
    y;

  StringInfo
    *signature;

  unsigned char
    *pixels;

  /*
    Compute image digital signature.
  */
  assert(image != (Image *) NULL);
  assert(image->signature == MagickSignature);
  if (image->debug != MagickFalse)
    (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
  signature_info=AcquireSignatureInfo();
  signature=AcquireStringInfo(image->columns*GetPixelChannels(image)*
    sizeof(pixel));
  image_view=AcquireVirtualCacheView(image,exception);
  for (y=0; y < (ssize_t) image->rows; y++)
  {
    register ssize_t
      x;

    register unsigned char
      *q;

    p=GetCacheViewVirtualPixels(image_view,0,y,image->columns,1,exception);
    if (p == (const Quantum *) NULL)
      break;
    SetStringInfoLength(signature,image->columns*GetPixelChannels(image)*
      sizeof(pixel));
    pixels=GetStringInfoDatum(signature);
    q=pixels;
    for (x=0; x < (ssize_t) image->columns; x++)
    {
      register ssize_t
        i;

      if (GetPixelReadMask(image,p) == 0)
        {
          p+=GetPixelChannels(image);
          continue;
        }
      for (i=0; i < (ssize_t) GetPixelChannels(image); i++)
      {
        register ssize_t
          j;

        PixelChannel channel=GetPixelChannelChannel(image,i);
        PixelTrait traits=GetPixelChannelTraits(image,channel);
        if (traits == UndefinedPixelTrait)
          continue;
        pixel=QuantumScale*p[i];
        for (j=0; j < (ssize_t) sizeof(pixel); j++)
          *q++=(unsigned char) ((unsigned char *) &pixel)[j];
      }
      p+=GetPixelChannels(image);
    }
    SetStringInfoLength(signature,(size_t) (q-pixels));
    UpdateSignature(signature_info,signature);
  }
  image_view=DestroyCacheView(image_view);
  FinalizeSignature(signature_info);
  hex_signature=StringInfoToHexString(GetSignatureDigest(signature_info));
  (void) DeleteImageProperty(image,"signature");
  (void) SetImageProperty(image,"signature",hex_signature,exception);
  /*
    Free resources.
  */
  hex_signature=DestroyString(hex_signature);
  signature=DestroyStringInfo(signature);
  signature_info=DestroySignatureInfo(signature_info);
  return(MagickTrue);
}
Example #23
0
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%                                                                             %
%                                                                             %
%                                                                             %
%   R e a d C A P T I O N I m a g e                                           %
%                                                                             %
%                                                                             %
%                                                                             %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%  ReadCAPTIONImage() reads a CAPTION 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 ReadCAPTIONImage method is:
%
%      Image *ReadCAPTIONImage(const ImageInfo *image_info,
%        ExceptionInfo *exception)
%
%  A description of each parameter follows:
%
%    o image_info: the image info.
%
%    o exception: return any errors or warnings in this structure.
%
*/
static Image *ReadCAPTIONImage(const ImageInfo *image_info,
  ExceptionInfo *exception)
{
  char
    *caption,
    geometry[MaxTextExtent],
    *property;

  const char
    *gravity;

  DrawInfo
    *draw_info;

  Image
    *image;

  MagickBooleanType
    status;

  register long
    i;

  TypeMetric
    metrics;

  unsigned long
    height,
    width;

  /*
    Initialize Image structure.
  */
  assert(image_info != (const ImageInfo *) NULL);
  assert(image_info->signature == MagickSignature);
  if (image_info->debug != MagickFalse)
    (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
      image_info->filename);
  assert(exception != (ExceptionInfo *) NULL);
  assert(exception->signature == MagickSignature);
  image=AcquireImage(image_info);
  if (image->columns == 0)
    ThrowReaderException(OptionError,"MustSpecifyImageSize");
  (void) ResetImagePage(image,"0x0+0+0");
  /*
    Format caption.
  */
  property=InterpretImageProperties(image_info,image,image_info->filename);
  (void) SetImageProperty(image,"caption",property);
  property=DestroyString(property);
  caption=ConstantString(GetImageProperty(image,"caption"));
  draw_info=CloneDrawInfo(image_info,(DrawInfo *) NULL);
  draw_info->text=ConstantString(caption);
  gravity=GetImageOption(image_info,"gravity");
  if (gravity != (char *) NULL)
    draw_info->gravity=(GravityType) ParseMagickOption(MagickGravityOptions,
      MagickFalse,gravity);
  if ((*caption != '\0') && (image->rows != 0) &&
      (image_info->pointsize == 0.0))
    {
      char
        *text;

      /*
        Scale text to fit bounding box.
      */
      for ( ; ; )
      {
        text=AcquireString(caption);
        i=FormatMagickCaption(image,draw_info,&metrics,&text);
        (void) CloneString(&draw_info->text,text);
        text=DestroyString(text);
        (void) FormatMagickString(geometry,MaxTextExtent,"%+g%+g",
          -metrics.bounds.x1,metrics.ascent);
        if (draw_info->gravity == UndefinedGravity)
          (void) CloneString(&draw_info->geometry,geometry);
        status=GetMultilineTypeMetrics(image,draw_info,&metrics);
        width=(unsigned long) floor(metrics.width+draw_info->stroke_width+0.5);
        height=(unsigned long) floor(metrics.height+draw_info->stroke_width+
          0.5);
        if ((width > (image->columns+1)) || (height > (image->rows+1)))
          break;
        draw_info->pointsize*=2.0;
      }
      draw_info->pointsize/=2.0;
      for ( ; ; )
      {
        text=AcquireString(caption);
        i=FormatMagickCaption(image,draw_info,&metrics,&text);
        (void) CloneString(&draw_info->text,text);
        text=DestroyString(text);
        (void) FormatMagickString(geometry,MaxTextExtent,"%+g%+g",
          -metrics.bounds.x1,metrics.ascent);
        if (draw_info->gravity == UndefinedGravity)
          (void) CloneString(&draw_info->geometry,geometry);
        status=GetMultilineTypeMetrics(image,draw_info,&metrics);
        width=(unsigned long) floor(metrics.width+draw_info->stroke_width+0.5);
        height=(unsigned long) floor(metrics.height+draw_info->stroke_width+
          0.5);
        if ((width > (image->columns+1)) || (height > (image->rows+1)))
          break;
        draw_info->pointsize++;
      }
      draw_info->pointsize--;
    }
  i=FormatMagickCaption(image,draw_info,&metrics,&caption);
  if (image->rows == 0)
    image->rows=(unsigned long) ((i+1)*(metrics.ascent-metrics.descent+
      draw_info->stroke_width)+0.5);
  if (image->rows == 0)
    image->rows=(unsigned long) ((i+1)*draw_info->pointsize+
      draw_info->stroke_width+0.5);
  if (SetImageBackgroundColor(image) == MagickFalse)
    {
      InheritException(exception,&image->exception);
      image=DestroyImageList(image);
      return((Image *) NULL);
    }
  /*
    Draw caption.
  */
  (void) CloneString(&draw_info->text,caption);
  status=GetMultilineTypeMetrics(image,draw_info,&metrics);
  if (draw_info->gravity != UndefinedGravity)
    image->page.x=(long) (metrics.bounds.x1-draw_info->stroke_width/2.0);
  else
    {
      (void) FormatMagickString(geometry,MaxTextExtent,"%+g%+g",
        -metrics.bounds.x1+draw_info->stroke_width/2.0,metrics.ascent+
        draw_info->stroke_width/2.0);
      (void) CloneString(&draw_info->geometry,geometry);
    }
  (void) AnnotateImage(image,draw_info);
  draw_info=DestroyDrawInfo(draw_info);
  caption=DestroyString(caption);
  return(GetFirstImageInList(image));
}
Example #24
0
static Image *ReadCINImage(const ImageInfo *image_info,ExceptionInfo *exception)
{
#define MonoColorType  1
#define RGBColorType  3

  CINInfo
    cin;

  Image
    *image;

  MagickBooleanType
    status;

  MagickOffsetType
    offset;

  QuantumInfo
    *quantum_info;

  QuantumType
    quantum_type;

  register ssize_t
    i;

  register PixelPacket
    *q;

  size_t
    length;

  ssize_t
    count,
    y;

  unsigned char
    magick[4],
    *pixels;

  /*
    Open image file.
  */
  assert(image_info != (const ImageInfo *) NULL);
  assert(image_info->signature == MagickSignature);
  if (image_info->debug != MagickFalse)
    (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
      image_info->filename);
  assert(exception != (ExceptionInfo *) NULL);
  assert(exception->signature == MagickSignature);
  image=AcquireImage(image_info);
  status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception);
  if (status == MagickFalse)
    {
      image=DestroyImageList(image);
      return((Image *) NULL);
    }
  /*
    File information.
  */
  offset=0;
  count=ReadBlob(image,4,magick);
  offset+=count;
  if ((count != 4) ||
      ((LocaleNCompare((char *) magick,"\200\052\137\327",4) != 0)))
    ThrowReaderException(CorruptImageError,"ImproperImageHeader");
  image->endian=(magick[0] == 0x80) && (magick[1] == 0x2a) &&
    (magick[2] == 0x5f) && (magick[3] == 0xd7) ? MSBEndian : LSBEndian;
  cin.file.image_offset=ReadBlobLong(image);
  offset+=4;
  cin.file.generic_length=ReadBlobLong(image);
  offset+=4;
  cin.file.industry_length=ReadBlobLong(image);
  offset+=4;
  cin.file.user_length=ReadBlobLong(image);
  offset+=4;
  cin.file.file_size=ReadBlobLong(image);
  offset+=4;
  offset+=ReadBlob(image,sizeof(cin.file.version),(unsigned char *)
    cin.file.version);
  (void) SetImageProperty(image,"dpx:file.version",cin.file.version);
  offset+=ReadBlob(image,sizeof(cin.file.filename),(unsigned char *)
    cin.file.filename);
  (void) SetImageProperty(image,"dpx:file.filename",cin.file.filename);
  offset+=ReadBlob(image,sizeof(cin.file.create_date),(unsigned char *)
    cin.file.create_date);
  (void) SetImageProperty(image,"dpx:file.create_date",cin.file.create_date);
  offset+=ReadBlob(image,sizeof(cin.file.create_time),(unsigned char *)
    cin.file.create_time);
  (void) SetImageProperty(image,"dpx:file.create_time",cin.file.create_time);
  offset+=ReadBlob(image,sizeof(cin.file.reserve),(unsigned char *)
    cin.file.reserve);
  /*
    Image information.
  */
  cin.image.orientation=(unsigned char) ReadBlobByte(image);
  offset++;
  if (cin.image.orientation != (unsigned char) (~0U))
    (void) FormatImageProperty(image,"dpx:image.orientation","%d",
      cin.image.orientation);
  switch (cin.image.orientation)
  {
    default:
    case 0: image->orientation=TopLeftOrientation; break;
    case 1: image->orientation=TopRightOrientation; break;
    case 2: image->orientation=BottomLeftOrientation; break;
    case 3: image->orientation=BottomRightOrientation; break;
    case 4: image->orientation=LeftTopOrientation; break;
    case 5: image->orientation=RightTopOrientation; break;
    case 6: image->orientation=LeftBottomOrientation; break;
    case 7: image->orientation=RightBottomOrientation; break;
  }
  cin.image.number_channels=(unsigned char) ReadBlobByte(image);
  offset++;
  offset+=ReadBlob(image,sizeof(cin.image.reserve1),(unsigned char *)
    cin.image.reserve1);
  for (i=0; i < 8; i++)
  {
    cin.image.channel[i].designator[0]=(unsigned char) ReadBlobByte(image);
    offset++;
    cin.image.channel[i].designator[1]=(unsigned char) ReadBlobByte(image);
    offset++;
    cin.image.channel[i].bits_per_pixel=(unsigned char) ReadBlobByte(image);
    offset++;
    cin.image.channel[i].reserve=(unsigned char) ReadBlobByte(image);
    offset++;
    cin.image.channel[i].pixels_per_line=ReadBlobLong(image);
    offset+=4;
    cin.image.channel[i].lines_per_image=ReadBlobLong(image);
    offset+=4;
    cin.image.channel[i].min_data=ReadBlobFloat(image);
    offset+=4;
    cin.image.channel[i].min_quantity=ReadBlobFloat(image);
    offset+=4;
    cin.image.channel[i].max_data=ReadBlobFloat(image);
    offset+=4;
    cin.image.channel[i].max_quantity=ReadBlobFloat(image);
    offset+=4;
  }
  cin.image.white_point[0]=ReadBlobFloat(image);
  offset+=4;
  if (IsFloatDefined(cin.image.white_point[0]) != MagickFalse)
    image->chromaticity.white_point.x=cin.image.white_point[0];
  cin.image.white_point[1]=ReadBlobFloat(image);
  offset+=4;
  if (IsFloatDefined(cin.image.white_point[1]) != MagickFalse)
    image->chromaticity.white_point.y=cin.image.white_point[1];
  cin.image.red_primary_chromaticity[0]=ReadBlobFloat(image);
  offset+=4;
  if (IsFloatDefined(cin.image.red_primary_chromaticity[0]) != MagickFalse)
    image->chromaticity.red_primary.x=cin.image.red_primary_chromaticity[0];
  cin.image.red_primary_chromaticity[1]=ReadBlobFloat(image);
  offset+=4;
  if (IsFloatDefined(cin.image.red_primary_chromaticity[1]) != MagickFalse)
    image->chromaticity.red_primary.y=cin.image.red_primary_chromaticity[1];
  cin.image.green_primary_chromaticity[0]=ReadBlobFloat(image);
  offset+=4;
  if (IsFloatDefined(cin.image.green_primary_chromaticity[0]) != MagickFalse)
    image->chromaticity.red_primary.x=cin.image.green_primary_chromaticity[0];
  cin.image.green_primary_chromaticity[1]=ReadBlobFloat(image);
  offset+=4;
  if (IsFloatDefined(cin.image.green_primary_chromaticity[1]) != MagickFalse)
    image->chromaticity.green_primary.y=cin.image.green_primary_chromaticity[1];
  cin.image.blue_primary_chromaticity[0]=ReadBlobFloat(image);
  offset+=4;
  if (IsFloatDefined(cin.image.blue_primary_chromaticity[0]) != MagickFalse)
    image->chromaticity.blue_primary.x=cin.image.blue_primary_chromaticity[0];
  cin.image.blue_primary_chromaticity[1]=ReadBlobFloat(image);
  offset+=4;
  if (IsFloatDefined(cin.image.blue_primary_chromaticity[1]) != MagickFalse)
    image->chromaticity.blue_primary.y=cin.image.blue_primary_chromaticity[1];
  offset+=ReadBlob(image,sizeof(cin.image.label),(unsigned char *)
    cin.image.label);
  (void) SetImageProperty(image,"dpx:image.label",cin.image.label);
  offset+=ReadBlob(image,sizeof(cin.image.reserve),(unsigned char *)
    cin.image.reserve);
  /*
    Image data format information.
  */
  cin.data_format.interleave=(unsigned char) ReadBlobByte(image);
  offset++;
  cin.data_format.packing=(unsigned char) ReadBlobByte(image);
  offset++;
  cin.data_format.sign=(unsigned char) ReadBlobByte(image);
  offset++;
  cin.data_format.sense=(unsigned char) ReadBlobByte(image);
  offset++;
  cin.data_format.line_pad=ReadBlobLong(image);
  offset+=4;
  cin.data_format.channel_pad=ReadBlobLong(image);
  offset+=4;
  offset+=ReadBlob(image,sizeof(cin.data_format.reserve),(unsigned char *)
    cin.data_format.reserve);
  /*
    Image origination information.
  */
  cin.origination.x_offset=(int) ReadBlobLong(image);
  offset+=4;
  if ((size_t) cin.origination.x_offset != ~0UL)
    (void) FormatImageProperty(image,"dpx:origination.x_offset","%.20g",
      (double) cin.origination.x_offset);
  cin.origination.y_offset=(ssize_t) ReadBlobLong(image);
  offset+=4;
  if ((size_t) cin.origination.y_offset != ~0UL)
    (void) FormatImageProperty(image,"dpx:origination.y_offset","%.20g",
      (double) cin.origination.y_offset);
  offset+=ReadBlob(image,sizeof(cin.origination.filename),(unsigned char *)
    cin.origination.filename);
  (void) SetImageProperty(image,"dpx:origination.filename",
    cin.origination.filename);
  offset+=ReadBlob(image,sizeof(cin.origination.create_date),(unsigned char *)
    cin.origination.create_date);
  (void) SetImageProperty(image,"dpx:origination.create_date",
    cin.origination.create_date);
  offset+=ReadBlob(image,sizeof(cin.origination.create_time),(unsigned char *)
    cin.origination.create_time);
  (void) SetImageProperty(image,"dpx:origination.create_time",
    cin.origination.create_time);
  offset+=ReadBlob(image,sizeof(cin.origination.device),(unsigned char *)
    cin.origination.device);
  (void) SetImageProperty(image,"dpx:origination.device",
    cin.origination.device);
  offset+=ReadBlob(image,sizeof(cin.origination.model),(unsigned char *)
    cin.origination.model);
  (void) SetImageProperty(image,"dpx:origination.model",cin.origination.model);
  offset+=ReadBlob(image,sizeof(cin.origination.serial),(unsigned char *)
    cin.origination.serial);
  (void) SetImageProperty(image,"dpx:origination.serial",
    cin.origination.serial);
  cin.origination.x_pitch=ReadBlobFloat(image);
  offset+=4;
  cin.origination.y_pitch=ReadBlobFloat(image);
  offset+=4;
  cin.origination.gamma=ReadBlobFloat(image);
  offset+=4;
  if (IsFloatDefined(cin.origination.gamma) != MagickFalse)
    image->gamma=cin.origination.gamma;
  offset+=ReadBlob(image,sizeof(cin.origination.reserve),(unsigned char *)
    cin.origination.reserve);
  if ((cin.file.image_offset > 2048) && (cin.file.user_length != 0))
    {
      int
        c;

      /*
        Image film information.
      */
      cin.film.id=ReadBlobByte(image);
      offset++;
      c=cin.film.id;
      if (c != ~0)
        (void) FormatImageProperty(image,"dpx:film.id","%d",cin.film.id);
      cin.film.type=ReadBlobByte(image);
      offset++;
      c=cin.film.type;
      if (c != ~0)
        (void) FormatImageProperty(image,"dpx:film.type","%d",cin.film.type);
      cin.film.offset=ReadBlobByte(image);
      offset++;
      c=cin.film.offset;
      if (c != ~0)
        (void) FormatImageProperty(image,"dpx:film.offset","%d",
          cin.film.offset);
      cin.film.reserve1=ReadBlobByte(image);
      offset++;
      cin.film.prefix=ReadBlobLong(image);
      offset+=4;
      if (cin.film.prefix != ~0UL)
        (void) FormatImageProperty(image,"dpx:film.prefix","%.20g",(double)
          cin.film.prefix);
      cin.film.count=ReadBlobLong(image);
      offset+=4;
      offset+=ReadBlob(image,sizeof(cin.film.format),(unsigned char *)
        cin.film.format);
      (void) SetImageProperty(image,"dpx:film.format",cin.film.format);
      cin.film.frame_position=ReadBlobLong(image);
      offset+=4;
      if (cin.film.frame_position != ~0UL)
        (void) FormatImageProperty(image,"dpx:film.frame_position","%.20g",
          (double) cin.film.frame_position);
      cin.film.frame_rate=ReadBlobFloat(image);
      offset+=4;
      if (IsFloatDefined(cin.film.frame_rate) != MagickFalse)
        (void) FormatImageProperty(image,"dpx:film.frame_rate","%g",
          cin.film.frame_rate);
      offset+=ReadBlob(image,sizeof(cin.film.frame_id),(unsigned char *)
        cin.film.frame_id);
      (void) SetImageProperty(image,"dpx:film.frame_id",cin.film.frame_id);
      offset+=ReadBlob(image,sizeof(cin.film.slate_info),(unsigned char *)
        cin.film.slate_info);
      (void) SetImageProperty(image,"dpx:film.slate_info",cin.film.slate_info);
      offset+=ReadBlob(image,sizeof(cin.film.reserve),(unsigned char *)
        cin.film.reserve);
    }
  if ((cin.file.image_offset > 2048) && (cin.file.user_length != 0))
    {
      StringInfo
        *profile;

      /*
        User defined data.
      */
      profile=BlobToStringInfo((const void *) NULL,cin.file.user_length);
      if (profile == (StringInfo *) NULL)
        ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
      offset+=ReadBlob(image,GetStringInfoLength(profile),
        GetStringInfoDatum(profile));
      (void) SetImageProfile(image,"dpx:user.data",profile);
      profile=DestroyStringInfo(profile);
    }
  for ( ; offset < (MagickOffsetType) cin.file.image_offset; offset++)
    (void) ReadBlobByte(image);
  image->depth=cin.image.channel[0].bits_per_pixel;
  image->columns=cin.image.channel[0].pixels_per_line;
  image->rows=cin.image.channel[0].lines_per_image;
  if (image_info->ping)
    {
      (void) CloseBlob(image);
      return(image);
    }
  /*
    Convert CIN raster image to pixel packets.
  */
  quantum_info=AcquireQuantumInfo(image_info,image);
  if (quantum_info == (QuantumInfo *) NULL)
    ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
  quantum_info->quantum=32;
  quantum_info->pack=MagickFalse;
  quantum_type=RGBQuantum;
  pixels=GetQuantumPixels(quantum_info);
  length=GetQuantumExtent(image,quantum_info,quantum_type);
  length=GetBytesPerRow(image->columns,3,image->depth,MagickTrue);
  if (cin.image.number_channels == 1)
    {
      quantum_type=GrayQuantum;
      length=GetBytesPerRow(image->columns,1,image->depth,MagickTrue);
    }
  for (y=0; y < (ssize_t) image->rows; y++)
  {
    q=QueueAuthenticPixels(image,0,y,image->columns,1,exception);
    if (q == (PixelPacket *) NULL)
      break;
    count=ReadBlob(image,length,pixels);
    if ((size_t) count != length)
      break;
    (void) ImportQuantumPixels(image,(CacheView *) NULL,quantum_info,
      quantum_type,pixels,exception);
    if (SyncAuthenticPixels(image,exception) == MagickFalse)
      break;
    if (image->previous == (Image *) NULL)
      {
        status=SetImageProgress(image,LoadImageTag,(MagickOffsetType) y,
          image->rows);
        if (status == MagickFalse)
          break;
      }
  }
  SetQuantumImageType(image,quantum_type);
  quantum_info=DestroyQuantumInfo(quantum_info);
  if (EOFBlob(image) != MagickFalse)
    ThrowFileException(exception,CorruptImageError,"UnexpectedEndOfFile",
      image->filename);
  SetImageColorspace(image,LogColorspace);
  (void) CloseBlob(image);
  return(GetFirstImageInList(image));
}
Example #25
0
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%                                                                             %
%                                                                             %
%                                                                             %
%   W r i t e H I S T O G R A M I m a g e                                     %
%                                                                             %
%                                                                             %
%                                                                             %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%  WriteHISTOGRAMImage() writes an image to a file in Histogram format.
%  The image shows a histogram of the color (or gray) values in the image.  The
%  image consists of three overlaid histograms:  a red one for the red channel,
%  a green one for the green channel, and a blue one for the blue channel.  The
%  image comment contains a list of unique pixel values and the number of times
%  each occurs in the image.
%
%  This method is strongly based on a similar one written by
%  [email protected] which in turn is based on ppmhistmap of netpbm.
%
%  The format of the WriteHISTOGRAMImage method is:
%
%      MagickBooleanType WriteHISTOGRAMImage(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 WriteHISTOGRAMImage(const ImageInfo *image_info,
  Image *image,ExceptionInfo *exception)
{
#define HistogramDensity  "256x200"

  char
    filename[MagickPathExtent];

  const char
    *option;

  Image
    *histogram_image;

  ImageInfo
    *write_info;

  MagickBooleanType
    status;

  PixelInfo
    *histogram;

  double
    maximum,
    scale;

  RectangleInfo
    geometry;

  register const Quantum
    *p;

  register Quantum
    *q,
    *r;

  register ssize_t
    x;

  size_t
    length;

  ssize_t
    y;

  /*
    Allocate histogram 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_info->filename);
  SetGeometry(image,&geometry);
  if (image_info->density == (char *) NULL)
    (void) ParseAbsoluteGeometry(HistogramDensity,&geometry);
  else
    (void) ParseAbsoluteGeometry(image_info->density,&geometry);
  histogram_image=CloneImage(image,geometry.width,geometry.height,MagickTrue,
    exception);
  if (histogram_image == (Image *) NULL)
    ThrowWriterException(ResourceLimitError,"MemoryAllocationFailed");
  (void) SetImageStorageClass(histogram_image,DirectClass,exception);
  /*
    Allocate histogram count arrays.
  */
  length=MagickMax((size_t) ScaleQuantumToChar(QuantumRange)+1UL,
    histogram_image->columns);
  histogram=(PixelInfo *) AcquireQuantumMemory(length,sizeof(*histogram));
  if (histogram == (PixelInfo *) NULL)
    {
      histogram_image=DestroyImage(histogram_image);
      ThrowWriterException(ResourceLimitError,"MemoryAllocationFailed");
    }
  /*
    Initialize histogram count arrays.
  */
  (void) ResetMagickMemory(histogram,0,length*sizeof(*histogram));
  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++)
    {
      if ((GetPixelRedTraits(image) & UpdatePixelTrait) != 0)
        histogram[ScaleQuantumToChar(GetPixelRed(image,p))].red++;
      if ((GetPixelGreenTraits(image) & UpdatePixelTrait) != 0)
        histogram[ScaleQuantumToChar(GetPixelGreen(image,p))].green++;
      if ((GetPixelBlueTraits(image) & UpdatePixelTrait) != 0)
        histogram[ScaleQuantumToChar(GetPixelBlue(image,p))].blue++;
      p+=GetPixelChannels(image);
    }
  }
  maximum=histogram[0].red;
  for (x=0; x < (ssize_t) histogram_image->columns; x++)
  {
    if (((GetPixelRedTraits(image) & UpdatePixelTrait) != 0) &&
        (maximum < histogram[x].red))
      maximum=histogram[x].red;
    if (((GetPixelGreenTraits(image) & UpdatePixelTrait) != 0) &&
        (maximum < histogram[x].green))
      maximum=histogram[x].green;
    if (((GetPixelBlueTraits(image) & UpdatePixelTrait) != 0) &&
        (maximum < histogram[x].blue))
      maximum=histogram[x].blue;
  }
  scale=0.0;
  if (fabs(maximum) >= MagickEpsilon)
    scale=(double) histogram_image->rows/maximum;
  /*
    Initialize histogram image.
  */
  (void) QueryColorCompliance("#000000",AllCompliance,
    &histogram_image->background_color,exception);
  (void) SetImageBackgroundColor(histogram_image,exception);
  for (x=0; x < (ssize_t) histogram_image->columns; x++)
  {
    q=GetAuthenticPixels(histogram_image,x,0,1,histogram_image->rows,exception);
    if (q == (Quantum *) NULL)
      break;
    if ((GetPixelRedTraits(image) & UpdatePixelTrait) != 0)
      {
        y=(ssize_t) ceil(histogram_image->rows-scale*histogram[x].red-0.5);
        r=q+y*GetPixelChannels(histogram_image);
        for ( ; y < (ssize_t) histogram_image->rows; y++)
        {
          SetPixelRed(histogram_image,QuantumRange,r);
          r+=GetPixelChannels(histogram_image);
        }
      }
    if ((GetPixelGreenTraits(image) & UpdatePixelTrait) != 0)
      {
        y=(ssize_t) ceil(histogram_image->rows-scale*histogram[x].green-0.5);
        r=q+y*GetPixelChannels(histogram_image);
        for ( ; y < (ssize_t) histogram_image->rows; y++)
        {
          SetPixelGreen(histogram_image,QuantumRange,r);
          r+=GetPixelChannels(histogram_image);
        }
      }
    if ((GetPixelBlueTraits(image) & UpdatePixelTrait) != 0)
      {
        y=(ssize_t) ceil(histogram_image->rows-scale*histogram[x].blue-0.5);
        r=q+y*GetPixelChannels(histogram_image);
        for ( ; y < (ssize_t) histogram_image->rows; y++)
        {
          SetPixelBlue(histogram_image,QuantumRange,r);
          r+=GetPixelChannels(histogram_image);
        }
      }
    if (SyncAuthenticPixels(histogram_image,exception) == MagickFalse)
      break;
    status=SetImageProgress(image,SaveImageTag,y,histogram_image->rows);
    if (status == MagickFalse)
      break;
  }
  histogram=(PixelInfo *) RelinquishMagickMemory(histogram);
  option=GetImageOption(image_info,"histogram:unique-colors");
  if ((option == (const char *) NULL) || (IsStringTrue(option) != MagickFalse))
    {
      FILE
        *file;

      int
        unique_file;

      /*
        Add a unique colors as an image comment.
      */
      file=(FILE *) NULL;
      unique_file=AcquireUniqueFileResource(filename);
      if (unique_file != -1)
        file=fdopen(unique_file,"wb");
      if ((unique_file != -1) && (file != (FILE *) NULL))
        {
          char
            *property;

          (void) GetNumberColors(image,file,exception);
          (void) fclose(file);
          property=FileToString(filename,~0UL,exception);
          if (property != (char *) NULL)
            {
              (void) SetImageProperty(histogram_image,"comment",property,
                exception);
              property=DestroyString(property);
            }
        }
      (void) RelinquishUniqueFileResource(filename);
    }
  /*
    Write Histogram image.
  */
  (void) CopyMagickString(histogram_image->filename,image_info->filename,
    MagickPathExtent);
  write_info=CloneImageInfo(image_info);
  *write_info->magick='\0';
  (void) SetImageInfo(write_info,1,exception);
  if ((*write_info->magick == '\0') ||
      (LocaleCompare(write_info->magick,"HISTOGRAM") == 0))
    (void) FormatLocaleString(histogram_image->filename,MagickPathExtent,
      "miff:%s",write_info->filename);
  histogram_image->blob=DetachBlob(histogram_image->blob);
  histogram_image->blob=CloneBlobInfo(image->blob);
  status=WriteImage(write_info,histogram_image,exception);
  image->blob=DetachBlob(image->blob);
  image->blob=CloneBlobInfo(histogram_image->blob);
  histogram_image=DestroyImage(histogram_image);
  write_info=DestroyImageInfo(write_info);
  return(status);
}
Example #26
0
static Image *ReadVIPSImage(const ImageInfo *image_info,
  ExceptionInfo *exception)
{
  char
    buffer[MaxTextExtent],
    *metadata;

  Image
    *image;

  MagickBooleanType
    status;

  ssize_t
    n;

  unsigned int
    channels,
    marker;

  VIPSBandFormat
    format;

  VIPSCoding
    coding;

  VIPSType
    type;

  assert(image_info != (const ImageInfo *) NULL);
  assert(image_info->signature == MagickSignature);
  if (image_info->debug != MagickFalse)
    (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
      image_info->filename);
  assert(exception != (ExceptionInfo *) NULL);
  assert(exception->signature == MagickSignature);

  image=AcquireImage(image_info);
  status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception);
  if (status == MagickFalse)
    {
      image=DestroyImageList(image);
      return((Image *) NULL);
    }
  marker=ReadBlobLSBLong(image);
  if (marker == VIPS_MAGIC_LSB)
    image->endian=LSBEndian;
  else if (marker == VIPS_MAGIC_MSB)
    image->endian=MSBEndian;
  else
    ThrowReaderException(CorruptImageError,"ImproperImageHeader");
  image->columns=(size_t) ReadBlobLong(image);
  image->rows=(size_t) ReadBlobLong(image);
  status=SetImageExtent(image,image->columns,image->rows);
  if (status == MagickFalse)
    {
      InheritException(exception,&image->exception);
      return(DestroyImageList(image));
    }
  channels=ReadBlobLong(image);
  (void) ReadBlobLong(image); /* Legacy */
  format=(VIPSBandFormat) ReadBlobLong(image);
  switch(format)
  {
    case VIPSBandFormatUCHAR:
    case VIPSBandFormatCHAR:
      image->depth=8;
      break;
    case VIPSBandFormatUSHORT:
    case VIPSBandFormatSHORT:
      image->depth=16;
      break;
    case VIPSBandFormatUINT:
    case VIPSBandFormatINT:
    case VIPSBandFormatFLOAT:
      image->depth=32;
      break;
    case VIPSBandFormatDOUBLE:
      image->depth=64;
      break;
    default:
    case VIPSBandFormatCOMPLEX:
    case VIPSBandFormatDPCOMPLEX:
    case VIPSBandFormatNOTSET:
      ThrowReaderException(CoderError,"Unsupported band format");
  }
  coding=(VIPSCoding) ReadBlobLong(image);
  type=(VIPSType) ReadBlobLong(image);
  switch(type)
  {
    case VIPSTypeCMYK:
      SetImageColorspace(image,CMYKColorspace);
      if (channels == 5)
        image->matte=MagickTrue;
      break;
    case VIPSTypeB_W:
    case VIPSTypeGREY16:
      SetImageColorspace(image,GRAYColorspace);
      if (channels == 2)
        image->matte=MagickTrue;
      break;
    case VIPSTypeRGB:
    case VIPSTypeRGB16:
      SetImageColorspace(image,RGBColorspace);
      if (channels == 4)
        image->matte=MagickTrue;
      break;
    case VIPSTypesRGB:
      SetImageColorspace(image,sRGBColorspace);
      if (channels == 4)
        image->matte=MagickTrue;
      break;
    default:
    case VIPSTypeFOURIER:
    case VIPSTypeHISTOGRAM:
    case VIPSTypeLAB:
    case VIPSTypeLABS:
    case VIPSTypeLABQ:
    case VIPSTypeLCH:
    case VIPSTypeMULTIBAND:
    case VIPSTypeUCS:
    case VIPSTypeXYZ:
    case VIPSTypeYXY:
      ThrowReaderException(CoderError,"Unsupported colorspace");
  }
  image->units=PixelsPerCentimeterResolution;
  image->x_resolution=ReadBlobFloat(image)*10;
  image->y_resolution=ReadBlobFloat(image)*10;
  /*
    Legacy, offsets, future
  */
  (void) ReadBlobLongLong(image);
  (void) ReadBlobLongLong(image);
  (void) ReadBlobLongLong(image);
  if (image_info->ping != MagickFalse)
    return(image);
  if (IsSupportedCombination(format,type) == MagickFalse)
    ThrowReaderException(CoderError,
      "Unsupported combination of band format and colorspace");
  if (channels == 0 || channels > 5)
    ThrowReaderException(CoderError,"Unsupported number of channels");
  if (coding == VIPSCodingNONE)
    status=ReadVIPSPixelsNONE(image,format,type,channels,exception);
  else
    ThrowReaderException(CoderError,"Unsupported coding");
  metadata=(char *) NULL;
  while ((n=ReadBlob(image,MaxTextExtent-1,(unsigned char *) buffer)) != 0)
  {
    buffer[n]='\0';
    if (metadata == (char *) NULL)
      metadata=ConstantString(buffer);
    else
      (void) ConcatenateString(&metadata,buffer);
  }
  if (metadata != (char *) NULL)
    SetImageProperty(image,"vips:metadata",metadata);
  (void) CloseBlob(image);
  if (status == MagickFalse)
    return((Image *) NULL);
  return(image);
}
Example #27
0
/*
    Function:   rm_set_property
    Purpose:    Backport SetImageProperty for pre-6.3.1 versions of ImageMagick
*/
MagickBooleanType
rm_set_property(Image *image, const char *property, const char *value)
{
    return SetImageProperty(image, property, value);
}
Example #28
0
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%                                                                             %
%                                                                             %
%                                                                             %
%   R e a d L A B E L I m a g e                                               %
%                                                                             %
%                                                                             %
%                                                                             %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%  ReadLABELImage() reads a LABEL 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 ReadLABELImage method is:
%
%      Image *ReadLABELImage(const ImageInfo *image_info,
%        ExceptionInfo *exception)
%
%  A description of each parameter follows:
%
%    o image_info: the image info.
%
%    o exception: return any errors or warnings in this structure.
%
*/
static Image *ReadLABELImage(const ImageInfo *image_info,
  ExceptionInfo *exception)
{
  char
    geometry[MagickPathExtent],
    *property;

  const char
    *label;

  DrawInfo
    *draw_info;

  Image
    *image;

  MagickBooleanType
    status;

  TypeMetric
    metrics;

  size_t
    height,
    width;

  /*
    Initialize Image structure.
  */
  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);
  (void) ResetImagePage(image,"0x0+0+0");
  property=InterpretImageProperties((ImageInfo *) image_info,image,
    image_info->filename,exception);
  (void) SetImageProperty(image,"label",property,exception);
  property=DestroyString(property);
  label=GetImageProperty(image,"label",exception);
  draw_info=CloneDrawInfo(image_info,(DrawInfo *) NULL);
  draw_info->text=ConstantString(label);
  metrics.width=0;
  metrics.ascent=0.0;
  status=GetMultilineTypeMetrics(image,draw_info,&metrics,exception);
  if ((image->columns == 0) && (image->rows == 0))
    {
      image->columns=(size_t) (metrics.width+draw_info->stroke_width+0.5);
      image->rows=(size_t) floor(metrics.height+draw_info->stroke_width+0.5);
    }
  else
    if (((image->columns == 0) || (image->rows == 0)) ||
        (fabs(image_info->pointsize) < MagickEpsilon))
      {
        double
          high,
          low;

        /*
          Auto fit text into bounding box.
        */
        for ( ; ; draw_info->pointsize*=2.0)
        {
          (void) FormatLocaleString(geometry,MagickPathExtent,"%+g%+g",
            -metrics.bounds.x1,metrics.ascent);
          if (draw_info->gravity == UndefinedGravity)
            (void) CloneString(&draw_info->geometry,geometry);
          status=GetMultilineTypeMetrics(image,draw_info,&metrics,exception);
          width=(size_t) floor(metrics.width+draw_info->stroke_width+0.5);
          height=(size_t) floor(metrics.height+draw_info->stroke_width+0.5);
          if ((image->columns != 0) && (image->rows != 0))
            {
              if ((width >= image->columns) && (height >= image->rows))
                break;
            }
          else
            if (((image->columns != 0) && (width >= image->columns)) ||
                ((image->rows != 0) && (height >= image->rows)))
              break;
        }
        high=draw_info->pointsize;
        for (low=1.0; (high-low) > 0.5; )
        {
          draw_info->pointsize=(low+high)/2.0;
          (void) FormatLocaleString(geometry,MagickPathExtent,"%+g%+g",
            -metrics.bounds.x1,metrics.ascent);
          if (draw_info->gravity == UndefinedGravity)
            (void) CloneString(&draw_info->geometry,geometry);
          status=GetMultilineTypeMetrics(image,draw_info,&metrics,exception);
          width=(size_t) floor(metrics.width+draw_info->stroke_width+0.5);
          height=(size_t) floor(metrics.height+draw_info->stroke_width+0.5);
          if ((image->columns != 0) && (image->rows != 0))
            {
              if ((width < image->columns) && (height < image->rows))
                low=draw_info->pointsize+0.5;
              else
                high=draw_info->pointsize-0.5;
            }
          else
            if (((image->columns != 0) && (width < image->columns)) ||
                ((image->rows != 0) && (height < image->rows)))
              low=draw_info->pointsize+0.5;
            else
              high=draw_info->pointsize-0.5;
        }
        draw_info->pointsize=(low+high)/2.0-0.5;
      }
   status=GetMultilineTypeMetrics(image,draw_info,&metrics,exception);
   if (status == MagickFalse)
     {
      draw_info=DestroyDrawInfo(draw_info);
       image=DestroyImageList(image);
       return((Image *) NULL);
     }
  if (image->columns == 0)
    image->columns=(size_t) (metrics.width+draw_info->stroke_width+0.5);
  if (image->columns == 0)
    image->columns=(size_t) (draw_info->pointsize+draw_info->stroke_width+0.5);
  if (image->rows == 0)
    image->rows=(size_t) (metrics.ascent-metrics.descent+
      draw_info->stroke_width+0.5);
  if (image->rows == 0)
    image->rows=(size_t) (draw_info->pointsize+draw_info->stroke_width+0.5);
  status=SetImageExtent(image,image->columns,image->rows,exception);
  if (status == MagickFalse)
    {
      draw_info=DestroyDrawInfo(draw_info);
      return(DestroyImageList(image));
    }
  if (SetImageBackgroundColor(image,exception) == MagickFalse)
    {
      draw_info=DestroyDrawInfo(draw_info);
      image=DestroyImageList(image);
      return((Image *) NULL);
    }
  /*
    Draw label.
  */
  (void) FormatLocaleString(geometry,MagickPathExtent,"%+g%+g",
    draw_info->direction == RightToLeftDirection ? image->columns-
    metrics.bounds.x2 : 0.0,draw_info->gravity == UndefinedGravity ?
    metrics.ascent : 0.0);
  draw_info->geometry=AcquireString(geometry);
  status=AnnotateImage(image,draw_info,exception);
  if (image_info->pointsize == 0.0)
    {
      char
        pointsize[MagickPathExtent];

      (void) FormatLocaleString(pointsize,MagickPathExtent,"%.20g",
        draw_info->pointsize);
      (void) SetImageProperty(image,"label:pointsize",pointsize,exception);
    }
  draw_info=DestroyDrawInfo(draw_info);
  if (status == MagickFalse)
    {
      image=DestroyImageList(image);
      return((Image *) NULL);
    }
  return(GetFirstImageInList(image));
}
Example #29
0
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%                                                                             %
%                                                                             %
%                                                                             %
%   R e a d V I D I m a g e                                                   %
%                                                                             %
%                                                                             %
%                                                                             %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%  ReadVIDImage reads one of more images and creates a Visual Image
%  Directory file.  It allocates the memory necessary for the new Image
%  structure and returns a pointer to the new image.
%
%  The format of the ReadVIDImage method is:
%
%      Image *ReadVIDImage(const ImageInfo *image_info,ExceptionInfo *exception)
%
%  A description of each parameter follows:
%
%    o image_info: the image info.
%
%    o exception: return any errors or warnings in this structure.
%
*/
static Image *ReadVIDImage(const ImageInfo *image_info,ExceptionInfo *exception)
{
#define ClientName  "montage"

  char
    **filelist,
    *label;

  Image
    *image,
    *images,
    *montage_image,
    *next_image,
    *thumbnail_image;

  ImageInfo
    *read_info;

  int
    number_files;

  MagickBooleanType
    status;

  MontageInfo
    *montage_info;

  RectangleInfo
    geometry;

  register ssize_t
    i;

  /*
    Expand the filename.
  */
  assert(image_info != (const ImageInfo *) NULL);
  assert(image_info->signature == MagickSignature);
  if (image_info->debug != MagickFalse)
    (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
      image_info->filename);
  assert(exception != (ExceptionInfo *) NULL);
  assert(exception->signature == MagickSignature);
  image=AcquireImage(image_info);
  filelist=(char **) AcquireAlignedMemory(1,sizeof(*filelist));
  if (filelist == (char **) NULL)
    ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
  filelist[0]=ConstantString(image_info->filename);
  number_files=1;
  status=ExpandFilenames(&number_files,&filelist);
  if ((status == MagickFalse) || (number_files == 0))
    ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
  image=DestroyImage(image);
  /*
    Read each image and convert them to a tile.
  */
  images=NewImageList();
  read_info=CloneImageInfo(image_info);
  SetImageInfoBlob(read_info,(void *) NULL,0);
  (void) SetImageInfoProgressMonitor(read_info,(MagickProgressMonitor) NULL,
    (void *) NULL);
  if (read_info->size == (char *) NULL)
    (void) CloneString(&read_info->size,DefaultTileGeometry);
  for (i=0; i < (ssize_t) number_files; i++)
  {
    if (image_info->debug != MagickFalse)
      (void) LogMagickEvent(CoderEvent,GetMagickModule(),"name: %s",
        filelist[i]);
    (void) CopyMagickString(read_info->filename,filelist[i],MaxTextExtent);
    filelist[i]=DestroyString(filelist[i]);
    *read_info->magick='\0';
    next_image=ReadImage(read_info,exception);
    CatchException(exception);
    if (next_image == (Image *) NULL)
      break;
    label=InterpretImageProperties(image_info,next_image,DefaultTileLabel);
    (void) SetImageProperty(next_image,"label",label);
    label=DestroyString(label);
    if (image_info->debug != MagickFalse)
      (void) LogMagickEvent(CoderEvent,GetMagickModule(),
        "geometry: %.20gx%.20g",(double) next_image->columns,(double)
        next_image->rows);
    SetGeometry(next_image,&geometry);
    (void) ParseMetaGeometry(read_info->size,&geometry.x,&geometry.y,
      &geometry.width,&geometry.height);
    thumbnail_image=ThumbnailImage(next_image,geometry.width,geometry.height,
      exception);
    if (thumbnail_image != (Image *) NULL)
      {
        next_image=DestroyImage(next_image);
        next_image=thumbnail_image;
      }
    if (image_info->debug != MagickFalse)
      (void) LogMagickEvent(CoderEvent,GetMagickModule(),
        "thumbnail geometry: %.20gx%.20g",(double) next_image->columns,(double)
        next_image->rows);
    AppendImageToList(&images,next_image);
    status=SetImageProgress(images,LoadImagesTag,i,number_files);
    if (status == MagickFalse)
      break;
  }
  read_info=DestroyImageInfo(read_info);
  filelist=(char **) RelinquishMagickMemory(filelist);
  if (images == (Image *) NULL)
    ThrowReaderException(CorruptImageError,
      "ImageFileDoesNotContainAnyImageData");
  /*
    Create the visual image directory.
  */
  montage_info=CloneMontageInfo(image_info,(MontageInfo *) NULL);
  if (image_info->debug != MagickFalse)
    (void) LogMagickEvent(CoderEvent,GetMagickModule(),"creating montage");
  montage_image=MontageImageList(image_info,montage_info,
    GetFirstImageInList(images),exception);
  montage_info=DestroyMontageInfo(montage_info);
  images=DestroyImageList(images);
  return(montage_image);
}
Example #30
0
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%                                                                             %
%                                                                             %
%                                                                             %
%   a n a l y z e I m a g e                                                   %
%                                                                             %
%                                                                             %
%                                                                             %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%  analyzeImage() computes the brightness and saturation mean,  standard
%  deviation, kurtosis and skewness and stores these values as attributes 
%  of the image.
%
%  The format of the analyzeImage method is:
%
%      unsigned long analyzeImage(Image *images,const int argc,
%        char **argv,ExceptionInfo *exception)
%
%  A description of each parameter follows:
%
%    o image: the address of a structure of type Image.
%
%    o argc: Specifies a pointer to an integer describing the number of
%      elements in the argument vector.
%
%    o argv: Specifies a pointer to a text array containing the command line
%      arguments.
%
%    o exception: return any errors or warnings in this structure.
%
*/
ModuleExport unsigned long analyzeImage(Image **images,const int argc,
  const char **argv,ExceptionInfo *exception)
{
  CacheView
    *cache_view;

  char
    text[MaxTextExtent];

  double
    area,
    brightness_mean,
    brightness_standard_deviation,
    brightness_kurtosis,
    brightness_skewness,
    brightness_sum_x,
    brightness_sum_x2,
    brightness_sum_x3,
    brightness_sum_x4,
    saturation_mean,
    saturation_standard_deviation,
    saturation_kurtosis,
    saturation_skewness,
    saturation_sum_x,
    saturation_sum_x2,
    saturation_sum_x3,
    saturation_sum_x4;

  double
    brightness,
    hue,
    saturation;

  Image
    *image;

  long
    y;

  register const PixelPacket
    *p;

  register long
    x;

  assert(images != (Image **) NULL);
  assert(*images != (Image *) NULL);
  assert((*images)->signature == MagickSignature);
  (void) argc;
  (void) argv;
  image=(*images);
  for ( ; image != (Image *) NULL; image=GetNextImageInList(image))
  {
    brightness_sum_x=0.0;
    brightness_sum_x2=0.0;
    brightness_sum_x3=0.0;
    brightness_sum_x4=0.0;
    brightness_mean=0.0;
    brightness_standard_deviation=0.0;
    brightness_kurtosis=0.0;
    brightness_skewness=0.0;
    saturation_sum_x=0.0;
    saturation_sum_x2=0.0;
    saturation_sum_x3=0.0;
    saturation_sum_x4=0.0;
    saturation_mean=0.0;
    saturation_standard_deviation=0.0;
    saturation_kurtosis=0.0;
    saturation_skewness=0.0;
    area=0.0;
    cache_view=AcquireCacheView(image);
    for (y=0; y < (long) image->rows; y++)
    {
      p=GetCacheViewVirtualPixels(image_view,0,y,image->columns,1,exception);
      if (p == (const PixelPacket *) NULL)
        break;
      for (x=0; x < (long) image->columns; x++)
      {
        ConvertRGBToHSB(p->red,p->green,p->blue,&hue,&saturation,&brightness);
        brightness*=QuantumRange;
        brightness_sum_x+=brightness;
        brightness_sum_x2+=brightness*brightness;
        brightness_sum_x3+=brightness*brightness*brightness;
        brightness_sum_x4+=brightness*brightness*brightness*brightness;
        saturation*=QuantumRange;
        saturation_sum_x+=saturation;
        saturation_sum_x2+=saturation*saturation;
        saturation_sum_x3+=saturation*saturation*saturation;
        saturation_sum_x4+=saturation*saturation*saturation*saturation;
        area++;
        p++;
      }
    }
    cache_view=DestroyCacheView(image_view);
    if (area <= 0.0)
      break;
    brightness_mean=brightness_sum_x/area;
    (void) FormatMagickString(text,MaxTextExtent,"%g",brightness_mean);
    (void) SetImageProperty(image,"filter:brightness:mean",text);
    brightness_standard_deviation=sqrt(brightness_sum_x2/area-(brightness_sum_x/
      area*brightness_sum_x/area));
    (void) FormatMagickString(text,MaxTextExtent,"%g",
      brightness_standard_deviation);
    (void) SetImageProperty(image,"filter:brightness:standard-deviation",text);
    if (brightness_standard_deviation != 0)
      brightness_kurtosis=(brightness_sum_x4/area-4.0*brightness_mean*
        brightness_sum_x3/area+6.0*brightness_mean*brightness_mean*
        brightness_sum_x2/area-3.0*brightness_mean*brightness_mean*
        brightness_mean*brightness_mean)/(brightness_standard_deviation*
        brightness_standard_deviation*brightness_standard_deviation*
        brightness_standard_deviation)-3.0;
    (void) FormatMagickString(text,MaxTextExtent,"%g",brightness_kurtosis);
    (void) SetImageProperty(image,"filter:brightness:kurtosis",text);
    if (brightness_standard_deviation != 0)
      brightness_skewness=(brightness_sum_x3/area-3.0*brightness_mean*
        brightness_sum_x2/area+2.0*brightness_mean*brightness_mean*
        brightness_mean)/(brightness_standard_deviation*
        brightness_standard_deviation*brightness_standard_deviation);
    (void) FormatMagickString(text,MaxTextExtent,"%g",brightness_skewness);
    (void) SetImageProperty(image,"filter:brightness:skewness",text);
    saturation_mean=saturation_sum_x/area;
    (void) FormatMagickString(text,MaxTextExtent,"%g",saturation_mean);
    (void) SetImageProperty(image,"filter:saturation:mean",text);
    saturation_standard_deviation=sqrt(saturation_sum_x2/area-(saturation_sum_x/
      area*saturation_sum_x/area));
    (void) FormatMagickString(text,MaxTextExtent,"%g",
      saturation_standard_deviation);
    (void) SetImageProperty(image,"filter:saturation:standard-deviation",text);
    if (saturation_standard_deviation != 0)
      saturation_kurtosis=(saturation_sum_x4/area-4.0*saturation_mean*
        saturation_sum_x3/area+6.0*saturation_mean*saturation_mean*
        saturation_sum_x2/area-3.0*saturation_mean*saturation_mean*
        saturation_mean*saturation_mean)/(saturation_standard_deviation*
        saturation_standard_deviation*saturation_standard_deviation*
        saturation_standard_deviation)-3.0;
    (void) FormatMagickString(text,MaxTextExtent,"%g",saturation_kurtosis);
    (void) SetImageProperty(image,"filter:saturation:kurtosis",text);
    if (saturation_standard_deviation != 0)
      saturation_skewness=(saturation_sum_x3/area-3.0*saturation_mean*
        saturation_sum_x2/area+2.0*saturation_mean*saturation_mean*
        saturation_mean)/(saturation_standard_deviation*
        saturation_standard_deviation*saturation_standard_deviation);
    (void) FormatMagickString(text,MaxTextExtent,"%g",saturation_skewness);
    (void) SetImageProperty(image,"filter:saturation:skewness",text);
  }
  return(MagickImageFilterSignature);
}