GDCM
2.2.3
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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 GDCMSTREAMIMAGEREADER_H 00019 #define GDCMSTREAMIMAGEREADER_H 00020 00021 #include "gdcmReader.h" 00022 00023 namespace gdcm 00024 { 00025 00026 class MediaStorage; 00038 class GDCM_EXPORT StreamImageReader 00039 { 00040 00041 public: 00042 StreamImageReader(); 00043 virtual ~StreamImageReader(); 00044 00048 void SetFileName(const char* inFileName); 00049 void SetStream(std::istream& inStream); 00050 00051 std::vector<unsigned int> GetDimensionsValueForResolution( unsigned int ); 00052 00060 void DefinePixelExtent(uint16_t inXMin, uint16_t inXMax, 00061 uint16_t inYMin, uint16_t inYMax, uint16_t inZMin = 0, uint16_t inZMax = 1); 00062 00067 uint32_t DefineProperBufferLength() const; 00068 00076 bool Read(char* inReadBuffer, const std::size_t& inBufferLength); 00077 00083 bool CanReadImage() const; 00084 00088 virtual bool ReadImageInformation(); 00089 00093 File const & GetFile() const; 00094 00095 protected: 00096 private: 00097 //contains a reader for being able to ReadUpToTag 00098 //however, we don't want the user to be able to call Read 00099 //either directly or via a parent class call, so we hide the reader in here. 00100 Reader mReader; 00101 00102 std::streamoff mFileOffset; //the file offset for getting header information 00103 std::streamoff mFileOffset1; 00104 DataSet mHeaderInformation; //all the non-pixel information 00105 00106 //for thread safety, these should not be stored here, but should be used 00107 //for every read subregion operation. 00108 uint16_t mXMin, mYMin, mXMax, mYMax, mZMin, mZMax; 00109 00114 bool ReadImageSubregionRAW(char* inReadBuffer, const std::size_t& inBufferLength); 00115 00118 bool ReadImageSubregionJpegLS(char* inReadBuffer, const std::size_t& inBufferLength); 00119 }; 00120 00121 } // end namespace gdcm 00122 00123 #endif //GDCMSTREAMIMAGEREADER_H 00124