Source/System/Image/FileIO/OSGHDRImageFileType.h

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  38
  39 #ifndef OSGHDRIMAGEFILETYPE
  40 #define OSGHDRIMAGEFILETYPE
  41
  42 #ifdef  __sgi
  43 #pragma  once
  44 #endif
  45
  46 #include "OSGImageFileIODef.h"
  47 #include "OSGImageFileType.h"
  48
  49 OSG_BEGIN_NAMESPACE
  50
  51 /*! \brief DAT File Handler. Used to read/write DAT/RAW files.
  52     See \ref PageSystemImage for a detailed description.
  53
  54     \ingroup GrpImageFileIOHDR
  55     \ingroup GrpLibOSGImageFileIO
  56  */
  57
  58 class OSG_IMGFILEIO_DLLMAPPING HDRImageFileType : public ImageFileType
  59 {
  60     /*==========================  PUBLIC  =================================*/
  61
  62   public:
  63
  64     /*---------------------------------------------------------------------*/
  65     /*! \name                   Destructor                                 */
  66     /*! \{                                                                 */
  67
  68     virtual ~HDRImageFileType (void);
  69
  70     /*! \}                                                                 */
  71     /*---------------------------------------------------------------------*/
  72     /*! \name                   Read/Write                                 */
  73     /*! \{                                                                 */
  74
  75     virtual bool read (      Image            *image,
  76                              std::istream     &is,
  77                        const std::string      &mimeType);
  78
  79     virtual bool write(const Image            *image,
  80                              std::ostream     &os,
  81                        const std::string      &mimeType);
  82
  83     /*! \}                                                                 */
  84     /*=========================  PROTECTED  ===============================*/
  85
  86   protected:
  87
  88     /*---------------------------------------------------------------------*/
  89     /*! \name               Default Constructor                            */
  90     /*! \{                                                                 */
  91
  92     HDRImageFileType(const Char8 *mimeType,
  93                      const Char8 *suffixArray[],
  94                            UInt16  suffixByteCount,
  95                            UInt32  flags );
  96
  97     /*! \}                                                                 */
  98     /*---------------------------------------------------------------------*/
  99     /*! \name                     Buffer                                   */
 100     /*! \{                                                                 */
 101
 102     virtual UInt64 restoreData(      Image            *image,
 103                                const UChar8           *buffer,
 104                                      Int32             memSize = -1) const;
 105
 106     virtual UInt64 storeData  (const Image            *image,
 107                                      UChar8           *buffer,
 108                                      Int32             memSize = -1) const;
 109
 110     /*! \}                                                                 */
 111     /*==========================  PRIVATE  ================================*/
 112
 113   private:
 114
 115     typedef ImageFileType Inherited;
 116
 117     /*! \}                                                                 */
 118     /*---------------------------------------------------------------------*/
 119     /*! \name                       Copy Op                                */
 120     /*! \{                                                                 */
 121
 122           HDRImageFileType            (const HDRImageFileType &obj);
 123     const HDRImageFileType &operator =(const HDRImageFileType &obj);
 124
 125     /*! \}                                                                 */
 126     /*---------------------------------------------------------------------*/
 127
 128
 129     typedef unsigned char RGBE[4];
 130
 131     bool checkHDR   (std::istream &is,
 132                           int     &width,
 133                           int     &height);
 134     bool radiance2fp(std::istream &is,
 135                           Real16  *data,
 136                           int      width,
 137                           int      height);
 138     bool radiance2fp(std::istream &is,
 139                           Real32  *data,
 140                           int      width,
 141                           int      height);
 142     bool freadcolrs (std::istream &is,
 143                           RGBE    *scan,
 144                           int      width);
 145     void RGBE2Float (     RGBE     rgbe,
 146                           Real32  *fcol);
 147     void RGBE2Half  (     RGBE     rgbe,
 148                           Real16  *fcol);
 149
 150     int  fwritecolrs(std:: ostream &os,
 151                      const Real32  *scan,
 152                            RGBE    *rgbe_scan,
 153                            int      width,
 154                            int      height);
 155
 156     int  fwritecolrs(std:: ostream &os,
 157                      const Real16  *scan,
 158                            RGBE    *rgbe_scan,
 159                            int      width,
 160                            int      height);
 161
 162     int fwriteRGBE  (std::ostream &os,
 163                           RGBE    *rgbe_scan,
 164                           int      width,
 165                           int      height);
 166
 167     void float2RGBE (const Real32  *fcol,
 168                            RGBE     rgbe);
 169
 170     void half2RGBE  (const Real16  *fcol,
 171                            RGBE     rgbe);
 172
 173
 174     static  HDRImageFileType _the;
 175 };
 176
 177 typedef HDRImageFileType *HDRImageFileTypeP;
 178
 179 OSG_END_NAMESPACE
 180
 181 #endif // OSGHDRIMAGEFILETYPE