X-Git-Url: https://git.creatis.insa-lyon.fr/pubgit/?a=blobdiff_plain;f=src%2FgdcmFile.h;h=a229157f442de84769f8eb1387effe7e590aa53a;hb=ab62b1a706df8e2ab1fbf26fa5037d6c22293655;hp=bb3074ce224cb4967978c27fa93f29246bc2465e;hpb=ea7d6b73b6e3707747332e25bcc3f4ad4cd76c9c;p=gdcm.git diff --git a/src/gdcmFile.h b/src/gdcmFile.h index bb3074ce..a229157f 100644 --- a/src/gdcmFile.h +++ b/src/gdcmFile.h @@ -1,4 +1,20 @@ -// gdcmFile.h +/*========================================================================= + + Program: gdcm + Module: $RCSfile: gdcmFile.h,v $ + Language: C++ + Date: $Date: 2004/08/02 16:42:14 $ + Version: $Revision: 1.42 $ + + Copyright (c) CREATIS (Centre de Recherche et d'Applications en Traitement de + l'Image). All rights reserved. See Doc/License.txt or + http://www.creatis.insa-lyon.fr/Public/Gdcm/License.htm for details. + + This software is distributed WITHOUT ANY WARRANTY; without even + the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR + PURPOSE. See the above copyright notices for more information. + +=========================================================================*/ #ifndef GDCMFILE_H #define GDCMFILE_H @@ -6,91 +22,113 @@ #include "gdcmCommon.h" #include "gdcmHeader.h" -//////////////////////////////////////////////////////////////////////////// -// In addition to Dicom header exploration, this class is designed -// for accessing the image/volume content. One can also use it to -// write Dicom files. -////// QUESTION: this looks still like an open question whether the -////// relationship between a gdcmFile and gdcmHeader is of -////// type IS_A or HAS_A ! - -class GDCM_EXPORT gdcmFile: public gdcmHeader +//----------------------------------------------------------------------------- +/* + * In addition to Dicom header exploration, this class is designed + * for accessing the image/volume content. One can also use it to + * write Dicom/ACR-NEMA/RAW files. + */ +class GDCM_EXPORT gdcmFile { -private: - // QUESTION : - // Data pointe sur quoi? - // sur les Pixels lus? - // --> j'ajoute un champ public : Pixels - // (il faudra que l'utilisateur puisse modifier les pixels ?) - - void* Data; - int Parsed; // weather allready parsed - string OrigFileName; // To avoid file overwrite public: - // je ne suis pas sur d'avoir compris *où* il serait légitime de ranger ca. - // on pourra tjs le deplacer, et mettre des accesseurs - void * Pixels; - size_t lgrTotale; - - // Constructor dedicated to writing a new DICOMV3 part10 compliant - // file (see SetFileName, SetDcmTag and Write) - // TODO Swig gdcmFile(); - // Opens (in read only and when possible) an existing file and checks - // for DICOM compliance. Returns NULL on failure. - // Note: the in-memory representation of all available tags found in - // the DICOM header is post-poned to first header information access. - // This avoid a double parsing of public part of the header when - // one sets an a posteriori shadow dictionary (efficiency can be - // seen as a side effect). - - gdcmFile(string & filename); - - // For promotion (performs a deepcopy of pointed header object) - // TODO Swig gdcmFile(gdcmHeader* header); - // TODO Swig ~gdcmFile(); - - // On writing purposes. When instance was created through - // gdcmFile(string filename) then the filename argument MUST be different - // from the constructor's one (no overwriting allowed). - // TODO Swig int SetFileName(string filename); - - // Allocates necessary memory, copies the data (image[s]/volume[s]) to - // newly allocated zone and return a pointer to it: - - void * GetImageData(); - - // Returns size (in bytes) of required memory to contain data - // represented in this file. - - size_t GetImageDataSize(); - - // Copies (at most MaxSize bytes) of data to caller's memory space. - // Returns an error code on failure (if MaxSize is not big enough) - - int GetImageDataIntoVector(void* destination, size_t MaxSize ); - - // Allocates ExpectedSize bytes of memory at this->Data and copies the - // pointed data to it. - - // Question : - // Pourquoi dupliquer les pixels, alors qu'on les a deja en mémoire, - // et que Data (dans le gdcmHeader) est un pointeur ? - - int SetImageData (void * Data, size_t ExpectedSize); - void SetImageDataSize (size_t ExpectedSize); - - // Push to disk. - // A NE PAS OUBLIER : que fait-on en cas de Transfert Syntax (dans l'entete) - // incohérente avec l'ordre des octets en mémoire - // TODO Swig int Write(); - - // Ecrit sur disque les pixels d'UNE image - // Aucun test n'est fait sur l'"Endiannerie" du processeur. - // Ca sera à l'utilisateur d'appeler son Reader correctement - - int WriteRawData (string nomFichier); - int WriteDcm (string nomFichier); - int WriteAcr (string nomFichier); + gdcmFile( gdcmHeader *header ); + gdcmFile( std::string const & filename ); + + virtual ~gdcmFile(); + + /// Accessor to \ref Header + gdcmHeader* GetHeader() { return Header; } + + void SetPixelDataSizeFromHeader(); + size_t GetImageDataSize(); + size_t GetImageDataSizeRaw(); + + void * GetImageData(); + size_t GetImageDataIntoVector(void* destination, size_t maxSize); + void * GetImageDataRaw(); + size_t GetImageDataIntoVectorRaw(void* destination, size_t maxSize); + + // Allocates ExpectedSize bytes of memory at this->Data and copies the + // pointed data to it. Copying the image might look useless but + // the caller might destroy it's image (without knowing it: think + // of a complicated interface where display is done with a library + // e.g. VTK) before calling the Write + + // see also gdcmHeader::SetImageDataSize ?!? + bool SetImageData (void * data, size_t expectedSize); + + /// \todo When the caller is aware we simply point to the data: + /// int SetImageDataNoCopy (void * Data, size_t ExpectedSize); + + // Write pixels of ONE image on hard drive + // No test is made on processor "endianity" + // The user must call his reader correctly + bool WriteRawData (std::string const & fileName); + bool WriteDcmImplVR(std::string const & fileName); + bool WriteDcmExplVR(std::string const & fileName); + bool WriteAcr (std::string const & fileName); + + // Don't look any longer for the code : + // It's in file gdcmParsePixels.cxx + bool ParsePixelData(); + + virtual bool SetEntryByNumber(std::string const & content, + uint16_t group, uint16_t element) + { + Header->SetEntryByNumber(content,group,element); + return true; + } + +protected: + bool WriteBase(std::string const & fileName, FileType type); + +private: + void SwapZone(void* im, int swap, int lgr, int nb); + + bool ReadPixelData(void * destination); + + // For JPEG 8 Bits, body in file gdcmJpeg.cxx + bool gdcm_read_JPEG_file (FILE *fp, void * image_buffer); + static int gdcm_read_RLE_fragment(char **areaToRead, long lengthToDecode, + long uncompressedSegmentSize, FILE *fp); + + // For JPEG 12 Bits, body in file gdcmJpeg12.cxx + bool gdcm_read_JPEG_file12 (FILE *fp, void* image_buffer); + + // For JPEG 2000, body in file gdcmJpeg2000.cxx + bool gdcm_read_JPEG2000_file (FILE *fp, void* image_buffer); + + // For Run Length Encoding (TOCHECK) + bool gdcm_read_RLE_file (FILE *fp, void* image_buffer); + +// members variables: + + /// \brief Header to use to load the file + gdcmHeader *Header; + + /// \brief Whether the underlying \ref gdcmHeader was loaded by + /// the constructor or passed to the constructor. When false + /// the destructor is in charge of deletion. + bool SelfHeader; + + /// \brief to hold the Pixels (when read) + void* PixelData; + + /// \brief Area length to receive the pixels + size_t ImageDataSizeRaw; + + /// \brief Area length to receive the RGB pixels + /// from Grey Plane + Palette Color + size_t ImageDataSize; + + /// \brief ==1 if GetImageDataRaw was used + /// ==0 if GetImageData was used + /// ==-1 if ImageData never read + int PixelRead; + + /// wether already parsed + int Parsed; }; +//----------------------------------------------------------------------------- #endif