1 /*=========================================================================
4 Module: $RCSfile: gdcmFile.h,v $
6 Date: $Date: 2004/09/23 09:40:30 $
7 Version: $Revision: 1.50 $
9 Copyright (c) CREATIS (Centre de Recherche et d'Applications en Traitement de
10 l'Image). All rights reserved. See Doc/License.txt or
11 http://www.creatis.insa-lyon.fr/Public/Gdcm/License.htm for details.
13 This software is distributed WITHOUT ANY WARRANTY; without even
14 the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
15 PURPOSE. See the above copyright notices for more information.
17 =========================================================================*/
22 #include "gdcmCommon.h"
23 #include "gdcmHeader.h"
25 //-----------------------------------------------------------------------------
27 * In addition to Dicom header exploration, this class is designed
28 * for accessing the image/volume content. One can also use it to
29 * write Dicom/ACR-NEMA/RAW files.
31 class GDCM_EXPORT gdcmFile
34 gdcmFile( gdcmHeader *header );
35 gdcmFile( std::string const & filename );
39 /// Accessor to \ref Header
40 gdcmHeader* GetHeader() { return Header; }
42 void SetPixelDataSizeFromHeader();
45 /// \brief Returns the size (in bytes) of required memory to hold
46 /// the pixel data represented in this file.
47 size_t GetImageDataSize(){ return ImageDataSize; };
50 /// \brief Returns the size (in bytes) of required memory to hold
51 /// the pixel data represented in this file, if user DOESN'T want
52 /// to get RGB pixels image when it's stored as a PALETTE COLOR image
53 /// -the (vtk) user is supposed to know how to deal with LUTs-
54 size_t GetImageDataSizeRaw(){ return ImageDataSizeRaw; };
56 uint8_t* GetImageData();
57 size_t GetImageDataIntoVector(void* destination, size_t maxSize);
58 uint8_t* GetImageDataRaw();
59 size_t GetImageDataIntoVectorRaw(void* destination, size_t maxSize);
61 // Allocates ExpectedSize bytes of memory at this->Data and copies the
62 // pointed data to it. Copying the image might look useless but
63 // the caller might destroy it's image (without knowing it: think
64 // of a complicated interface where display is done with a library
65 // e.g. VTK) before calling the Write
67 // see also gdcmHeader::SetImageDataSize ?!?
68 bool SetImageData (uint8_t* data, size_t expectedSize);
70 /// \todo When the caller is aware we simply point to the data:
71 /// int SetImageDataNoCopy (void * Data, size_t ExpectedSize);
73 // Write pixels of ONE image on hard drive
74 // No test is made on processor "endianity"
75 // The user must call his reader correctly
76 bool WriteRawData (std::string const & fileName);
77 bool WriteDcmImplVR(std::string const & fileName);
78 bool WriteDcmExplVR(std::string const & fileName);
79 bool WriteAcr (std::string const & fileName);
81 // Don't look any longer for the code :
82 // It's in file gdcmParsePixels.cxx
83 bool ParsePixelData();
85 virtual bool SetEntryByNumber(std::string const & content,
86 uint16_t group, uint16_t element)
88 Header->SetEntryByNumber(content,group,element);
93 bool WriteBase(std::string const & fileName, FileType type);
96 void SwapZone(void* im, int swap, int lgr, int nb);
98 bool ReadPixelData(void * destination);
100 // For JPEG 8 Bits, body in file gdcmJpeg.cxx
101 bool gdcm_read_JPEG_file (FILE *fp, void * image_buffer);
102 bool gdcm_write_JPEG_file (FILE *fp, void * image_buffer,
103 int image_width, int image_heigh,
106 // For JPEG 12 Bits, body in file gdcmJpeg12.cxx
107 bool gdcm_read_JPEG_file12 (FILE *fp, void* image_buffer);
108 bool gdcm_write_JPEG_file12 (FILE *fp, void* image_buffer,
109 int image_width, int image_height,
112 // For JPEG 2000, body in file gdcmJpeg2000.cxx
113 bool gdcm_read_JPEG2000_file (FILE *fp, void* image_buffer);
115 // For Run Length Encoding
116 bool gdcm_read_RLE_file (FILE *fp, void* image_buffer);
117 // FIXME : *sure* it's NOT static (C++)
118 // (would be static in C, or embedded in ADA)
119 // It's NOT a method, but a not user intended fonction.
120 // How do we write that in C++ ?)
121 static int gdcm_read_RLE_fragment(char **areaToRead, long lengthToDecode,
122 long uncompressedSegmentSize, FILE *fp);
124 void SaveInitialValues(); // will belong to the future gdcmPixelData class
125 void RestoreInitialValues(); // will belong to the future gdcmPixelData class
126 void DeleteInitialValues(); // will belong to the future gdcmPixelData class
128 // members variables:
130 /// \brief Header to use to load the file
133 /// \brief Whether the underlying \ref gdcmHeader was loaded by
134 /// the constructor or passed to the constructor. When false
135 /// the destructor is in charge of deletion.
138 /// wether already parsed
142 // --------------- Will be moved to a gdcmPixelData class
145 /// \brief to hold the Pixels (when read)
146 uint8_t* Pixel_Data; // (was PixelData)
148 /// \brief Area length to receive the Gray Level pixels
149 size_t ImageDataSizeRaw;
151 /// \brief Area length to receive the pixels making RGB
152 /// from Plane R, Plane G, Plane B
153 /// or from Grey Plane + Palette Color
154 /// or from YBR Pixels (or from RGB Pixels, as well)
155 size_t ImageDataSize;
157 /// \brief ==1 if GetImageDataRaw was used
158 /// ==0 if GetImageData was used
159 /// ==-1 if ImageData never read
162 /// \brief length of the last allocated area devoided to receive Pixels
163 /// ( to allow us not to (free + new) if un necessary )
164 size_t LastAllocatedPixelDataLength;
166 // Initial values of some fields that can be modified during reading process
167 // (in a future stage, they will be modified just before the writting process
168 // and restored just after)
169 // if user asked to transform gray level + LUT image into RGB image
171 /// \brief Samples Per Pixel (0x0028,0x0002), as found on disk
172 std::string InitialSpp;
173 /// \brief Photometric Interpretation (0x0028,0x0004), as found on disk
174 std::string InitialPhotInt;
175 /// \brief Planar Configuration (0x0028,0x0006), as found on disk
176 std::string InitialPlanConfig;
178 // Initial values of some fields that can be modified during reading process
179 // (in a future stage, they will be modified just before the writting process
180 // and restored just after)
181 // if the image was a 'strange' ACR-NEMA
182 // (Bits Allocated=12, High Bit not equal to Bits stored +1)
183 /// \brief Bits Allocated (0x0028,0x0100), as found on disk
184 std::string InitialBitsAllocated;
185 /// \brief High Bit (0x0028,0x0102), as found on disk
186 std::string InitialHighBit;
188 // some DocEntry that can be moved out of the H table during reading process
189 // (in a future stage, they will be modified just before the writting process
190 // and restored just after)
191 // if user asked to transform gray level + LUT image into RGB image
192 // We keep a pointer on them for a future use.
194 /// \brief Red Palette Color Lookup Table Descriptor 0028 1101 as read
195 gdcmDocEntry* InitialRedLUTDescr;
196 /// \brief Green Palette Color Lookup Table Descriptor 0028 1102 as read
197 gdcmDocEntry* InitialGreenLUTDescr;
198 /// \brief Blue Palette Color Lookup Table Descriptor 0028 1103 as read
199 gdcmDocEntry* InitialBlueLUTDescr;
201 /// \brief Red Palette Color Lookup Table Data 0028 1201 as read
202 gdcmDocEntry* InitialRedLUTData;
203 /// \brief Green Palette Color Lookup Table Data 0028 1202 as read
204 gdcmDocEntry* InitialGreenLUTData;
205 /// \brief Blue Palette Color Lookup Table Data 0028 1203 as read
206 gdcmDocEntry* InitialBlueLUTData;
209 // --------------- end of future gdcmPixelData class
214 //-----------------------------------------------------------------------------