ITK  4.1.0
Insight Segmentation and Registration Toolkit
itkTIFFImageIO.h
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00001 /*=========================================================================
00002  *
00003  *  Copyright Insight Software Consortium
00004  *
00005  *  Licensed under the Apache License, Version 2.0 (the "License");
00006  *  you may not use this file except in compliance with the License.
00007  *  You may obtain a copy of the License at
00008  *
00009  *         http://www.apache.org/licenses/LICENSE-2.0.txt
00010  *
00011  *  Unless required by applicable law or agreed to in writing, software
00012  *  distributed under the License is distributed on an "AS IS" BASIS,
00013  *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
00014  *  See the License for the specific language governing permissions and
00015  *  limitations under the License.
00016  *
00017  *=========================================================================*/
00018 #ifndef __itkTIFFImageIO_h
00019 #define __itkTIFFImageIO_h
00020 
00021 #include "itkImageIOBase.h"
00022 #include <fstream>
00023 
00024 namespace itk
00025 {
00026 //BTX
00027 class TIFFReaderInternal;
00028 //ETX
00029 
00042 class ITK_EXPORT TIFFImageIO:public ImageIOBase
00043 {
00044 public:
00046   typedef TIFFImageIO          Self;
00047   typedef ImageIOBase          Superclass;
00048   typedef SmartPointer< Self > Pointer;
00049 
00051   itkNewMacro(Self);
00052 
00054   itkTypeMacro(TIFFImageIO, ImageIOBase);
00055 
00056   /*-------- This part of the interface deals with reading data. ------ */
00057 
00060   virtual bool CanReadFile(const char *);
00061 
00063   virtual void ReadImageInformation();
00064 
00066   virtual void Read(void *buffer);
00067 
00069   virtual void ReadVolume(void *buffer);
00070 
00072   virtual void ReadTiles(void *buffer);
00073 
00074   /*-------- This part of the interfaces deals with writing data. ----- */
00075 
00078   virtual bool CanWriteFile(const char *);
00079 
00082   virtual void WriteImageInformation();
00083 
00086   virtual void Write(const void *buffer);
00087 
00088   enum { NOFORMAT, RGB_, GRAYSCALE, PALETTE_RGB, PALETTE_GRAYSCALE, OTHER };
00089 
00090   //BTX
00091   enum { // Compression types
00092     NoCompression,
00093     PackBits,
00094     JPEG,
00095     Deflate,
00096     LZW
00097     };
00098   //ETX
00099 
00100   // Description:
00101   // Set compression type. Sinze LZW compression is patented outside US, the
00102   // additional work steps have to be taken in order to use that compression.
00103   void SetCompressionToNoCompression() { this->SetCompression(NoCompression); }
00104   void SetCompressionToPackBits()      { this->SetCompression(PackBits); }
00105   void SetCompressionToJPEG()          { this->SetCompression(JPEG); }
00106   void SetCompressionToDeflate()       { this->SetCompression(Deflate); }
00107   void SetCompressionToLZW()           { this->SetCompression(LZW); }
00108 
00109   void SetCompression(int compression)
00110   {
00111     m_Compression = compression;
00112 
00113     // This If block isn't strictly necessary:
00114     // SetCompression(true); would be sufficient.  However, it reads strangely
00115     // for SetCompression(NoCompression) to then set SetCompression(true).
00116     // Doing it this way is probaly also less likely to break in the future.
00117     if ( compression == NoCompression )
00118       {
00119       this->SetUseCompression(false); // this is for the ImageIOBase class
00120       }
00121     else
00122       {
00123       this->SetUseCompression(true);  // this is for the ImageIOBase class
00124       }
00125   }
00126 
00127 protected:
00128   TIFFImageIO();
00129   ~TIFFImageIO();
00130   void PrintSelf(std::ostream & os, Indent indent) const;
00131 
00132   void InternalWrite(const void *buffer);
00133 
00134   void InitializeColors();
00135 
00136   void ReadGenericImage(void *out,
00137                         unsigned int itkNotUsed(width),
00138                         unsigned int height);
00139 
00140   // To support Zeiss images
00141   void ReadTwoSamplesPerPixelImage(void *out,
00142                                    unsigned int itkNotUsed(width),
00143                                    unsigned int height);
00144 
00145   int EvaluateImageAt(void *out, void *in);
00146 
00147   unsigned int  GetFormat();
00148 
00149   void GetColor(int index, unsigned short *red,
00150                 unsigned short *green, unsigned short *blue);
00151 
00152   // Check that tag t can be found
00153   bool  CanFindTIFFTag(unsigned int t);
00154 
00155   // Read and returns the raw bytes of tag t
00156   void * ReadRawByteFromTag(unsigned int t, short & value_count);
00157 
00158   TIFFReaderInternal *m_InternalImage;
00159 
00160   int m_Compression;
00161 private:
00162   TIFFImageIO(const Self &);    //purposely not implemented
00163   void operator=(const Self &); //purposely not implemented
00164 
00165   unsigned short *m_ColorRed;
00166   unsigned short *m_ColorGreen;
00167   unsigned short *m_ColorBlue;
00168   int             m_TotalColors;
00169   unsigned int    m_ImageFormat;
00170 };
00171 } // end namespace itk
00172 
00173 #endif // __itkTIFFImageIO_h
00174