Line data    Source code

       1             : /******************************************************************************
       2             :  *
       3             :  * Purpose:  Implementation of the CPCIDSK_BLUT class.
       4             :  *
       5             :  ******************************************************************************
       6             :  * Copyright (c) 2015
       7             :  * PCI Geomatics, 90 Allstate Parkway, Markham, Ontario, Canada.
       8             : *
       9             :  * Permission is hereby granted, free of charge, to any person obtaining a
      10             :  * copy of this software and associated documentation files (the "Software"),
      11             :  * to deal in the Software without restriction, including without limitation
      12             :  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
      13             :  * and/or sell copies of the Software, and to permit persons to whom the
      14             :  * Software is furnished to do so, subject to the following conditions:
      15             :  *
      16             :  * The above copyright notice and this permission notice shall be included
      17             :  * in all copies or substantial portions of the Software.
      18             :  *
      19             :  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
      20             :  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
      21             :  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
      22             :  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
      23             :  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
      24             :  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
      25             :  * DEALINGS IN THE SOFTWARE.
      26             :  ****************************************************************************/
      27             : 
      28             : #include "pcidsk_exception.h"
      29             : #include "segment/cpcidskblut.h"
      30             : #include <cassert>
      31             : #include <cstring>
      32             : #include <sstream>
      33             : #include <cmath>
      34             : #include <stdlib.h>
      35             : 
      36             : using namespace PCIDSK;
      37             : 
      38             : /************************************************************************/
      39             : /*                            CPCIDSK_BLUT()                            */
      40             : /************************************************************************/
      41           0 : CPCIDSK_BLUT::CPCIDSK_BLUT( PCIDSKFile *fileIn, int segmentIn,
      42           0 :                           const char *segment_pointer )
      43           0 :         : CPCIDSKSegment( fileIn, segmentIn, segment_pointer )
      44             : 
      45             : {
      46           0 : }
      47             : 
      48             : /************************************************************************/
      49             : /*                           ~CPCIDSK_BLUT()                            */
      50             : /************************************************************************/
      51           0 : CPCIDSK_BLUT::~CPCIDSK_BLUT()
      52             : 
      53             : {
      54           0 : }
      55             : 
      56             : /************************************************************************/
      57             : /*                              ReadBLUT()                              */
      58             : /************************************************************************/
      59           0 : void CPCIDSK_BLUT::ReadBLUT( std::vector<BLUTEntry>& vBLUT )
      60             : 
      61             : {
      62           0 :     PCIDSKBuffer seg_data;
      63             : 
      64           0 :     seg_data.SetSize( (int) GetContentSize() );
      65             : 
      66           0 :     ReadFromFile( seg_data.buffer, 0, seg_data.buffer_size );
      67             : 
      68           0 :     std::istringstream ss(seg_data.buffer);
      69             : 
      70           0 :     vBLUT.clear();
      71             : 
      72             :     // the first token is interpolation type (not used)
      73             :     std::size_t nInterp;
      74           0 :     if(!(ss >> nInterp))
      75           0 :         throw PCIDSKException("Invalid BLUT segment.");
      76             : 
      77             :     // the second token is the number of entries
      78             :     std::size_t nCount;
      79           0 :     if(!(ss >> nCount) || nCount > 1024 * 1024 /* arbitrary limit */)
      80           0 :         throw PCIDSKException("Invalid BLUT segment.");
      81             : 
      82           0 :     for(std::size_t n=0; n<nCount; ++n)
      83             :     {
      84           0 :         BLUTEntry oEntry;
      85             : 
      86           0 :         if(!(ss >> oEntry.first))
      87           0 :             throw PCIDSKException("Invalid BLUT segment.");
      88             : 
      89           0 :         if(!(ss >> oEntry.second))
      90           0 :             throw PCIDSKException("Invalid BLUT segment.");
      91             : 
      92           0 :         vBLUT.push_back(oEntry);
      93             : 
      94             :     }
      95           0 : }
      96             : 
      97             : /************************************************************************/
      98             : /*                              WriteBLUT()                             */
      99             : /************************************************************************/
     100           0 : void CPCIDSK_BLUT::WriteBLUT( const std::vector<BLUTEntry>& vBLUT )
     101             : 
     102             : {
     103           0 :     std::stringstream oSS;
     104             : 
     105           0 :     oSS << INTERP_LINEAR << " " << vBLUT.size();
     106           0 :     oSS.precision(15);
     107             : 
     108           0 :     for(std::vector<BLUTEntry>::const_iterator it = vBLUT.begin();
     109           0 :         it != vBLUT.end();
     110           0 :         ++it)
     111             :     {
     112           0 :         if(it->first == std::floor(it->first))
     113           0 :             oSS << " " << (int) it->first;
     114             :         else
     115           0 :             oSS << " " << it->first;
     116             : 
     117           0 :         if(it->second == std::floor(it->second))
     118           0 :             oSS << " " << (int) it->second;
     119             :         else
     120           0 :             oSS << " " << it->second;
     121             :     }
     122             : 
     123           0 :     std::string sData = oSS.str();
     124           0 :     WriteToFile( sData.c_str(), 0, sData.size() );
     125           0 : }