www.pudn.com > RSImageManger.rar > TIFFDEC.H

/* 
/-------------------------------------------------------------------- 
| 
|      $Id: tiffdec.h,v 1.6 2000/01/16 20:43:15 anonymous Exp $ 
| 
|      Copyright (c) 1996-1998 Ulrich von Zadow 
| 
\-------------------------------------------------------------------- 
*/ 
 
#ifndef INCL_TIFFDEC 
#define INCL_TIFFDEC 
 
#ifndef INCL_PICDEC 
#include "picdec.h" 
#endif 
 
extern "C" 
{ 
#include "tiff.h" 
#include "tiffio.h" 
} 
 
//! TIFF file decoder. Uses LIBTIFF to do the actual conversion. 
//! Supports 1, 8 and 24 bits per pixel as output formats. 
class CTIFFDecoder : public CPicDecoder 
{ 
 
friend class _tiff_helper; 
friend class CTIFFEncoder; 
 
public: 
  //! Creates a decoder 
  CTIFFDecoder 
    (); 
 
  //! Destroys a decoder 
  virtual ~CTIFFDecoder 
    (); 
/* 
  CBmp * MakeBmpFromFile 
    ( char * pszFName 
    ); 
*/ 
protected: 
  //! Sets up LIBTIFF environment and calls LIBTIFF to decode an 
  //! image. 
  virtual void DoDecode 
    ( CBmp * pBmp, 
      RGBAPIXEL ** ppPal, 
      int * pDestBPP, 
      CDataSource * pDataSrc 
    ); 
 
  virtual void DoTiffDecode 
    ( CBmp * pBmp, 
      RGBAPIXEL ** ppPal, 
      int * pDestBPP, 
      CDataSource * pDataSrc, 
      TIFF* tiff 
    ); 
 
private: 
	// these 2 helpers dedicated to hi/low bit-depths respectively 
	void doHiColor 
    ( TIFF * tif, 
      CBmp * pBmp, 
      int * pDestBPP 
    ); 
	void doLoColor 
    ( TIFF * tif, 
      CBmp * pBmp, 
      int * pDestBPP, 
      RGBAPIXEL ** ppPal 
    ); 
 
  // Callback from the TIFF library. 
  // Should be accessed only by the TIFF decoder and libtiff. 
  static void Win32WarningHandler 
    ( const char* module, 
      const char* fmt, 
      va_list ap 
    ); 
 
  // Callback from the TIFF library. 
  // Should be accessed only by the TIFF decoder and libtiff. 
  static void Win32ErrorHandler 
    ( const char* module, 
      const char* fmt, 
      va_list ap 
    ); 
 
private: 
  // Temporary storage for an error message.  
  // Used in the callbacks, so it's static. 
  static char m_szLastErr[256]; 
}; 
 
 
#endif 
/* 
/-------------------------------------------------------------------- 
| 
|      $Log: tiffdec.h,v $ 
|      Revision 1.6  2000/01/16 20:43:15  anonymous 
|      Removed MFC dependencies 
| 
|      Revision 1.5  2000/01/08 15:56:12  Ulrich von Zadow 
|      Made sure change logging works in every file. 
| 
|      Revision 1.4  1999/10/03 18:50:52  Ulrich von Zadow 
|      Added automatic logging of changes. 
| 
| 
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*/