Line data    Source code

       1             : //**************************************************************************
       2             : //* This file is property of and copyright by the ALICE HLT Project        * 
       3             : //* ALICE Experiment at CERN, All rights reserved.                         *
       4             : //*                                                                        *
       5             : //* Primary Authors: Matthias Richter <Matthias.Richter@ift.uib.no>        *
       6             : //*                  for The ALICE HLT Project.                            *
       7             : //*                                                                        *
       8             : //* Permission to use, copy, modify and distribute this software and its   *
       9             : //* documentation strictly for non-commercial purposes is hereby granted   *
      10             : //* without fee, provided that the above copyright notice appears in all   *
      11             : //* copies and that both the copyright notice and this permission notice   *
      12             : //* appear in the supporting documentation. The authors make no claims     *
      13             : //* about the suitability of this software for any purpose. It is          *
      14             : //* provided "as is" without express or implied warranty.                  *
      15             : //**************************************************************************
      16             : 
      17             : /// @file   AliHLTDataInflaterSimple.cxx
      18             : /// @author Matthias Richter
      19             : /// @date   2011-09-01
      20             : /// @brief  Data inflater implementation for format of AliHLTDataDeflaterSimple
      21             : /// @note   
      22             : 
      23             : #include "AliHLTDataInflaterSimple.h"
      24             : 
      25             : /** ROOT macro for the implementation of ROOT specific class methods */
      26         126 : ClassImp(AliHLTDataInflaterSimple)
      27             : 
      28             : AliHLTDataInflaterSimple::AliHLTDataInflaterSimple()
      29           0 :   : AliHLTDataInflater()
      30           0 :   , fParameterDefinitions()
      31           0 :   , fCurrentParameter(-1)
      32           0 :   , fLegacyMode(-1)
      33           0 : {
      34             :   // constructur, see header file for class documentation
      35           0 : }
      36             : 
      37             : AliHLTDataInflaterSimple::~AliHLTDataInflaterSimple()
      38           0 : {
      39             :   // destructor
      40           0 : }
      41             : 
      42             : int AliHLTDataInflaterSimple::AddParameterDefinition(const char* name, int bitLength, int reducedBitLength)
      43             : {
      44             :   /// add a parameter definition to the configuration, return reference id
      45           0 :   fParameterDefinitions.push_back(AliHLTDataDeflaterSimple::AliHLTDataDeflaterParameter(name, bitLength, reducedBitLength));
      46           0 :   return fParameterDefinitions.size()-1;
      47           0 : }
      48             : 
      49             : bool AliHLTDataInflaterSimple::NextValue(AliHLTUInt64_t& value, AliHLTUInt32_t& length)
      50             : {
      51             :   /// overloaded from AliHLTDataInflater
      52             :   /// functions reads the sequence of parameters as defined by the decoder
      53             :   /// list, than it starts at the first parameter again
      54           0 :   value=0;
      55           0 :   length=0;
      56           0 :   if (fLegacyMode!=0) {
      57           0 :   if ((++fCurrentParameter)>=(int)fParameterDefinitions.size()) fCurrentParameter=0;
      58           0 :   fLegacyMode=1;
      59           0 :   }
      60           0 :   if (fParameterDefinitions.size()==0 || fCurrentParameter<0) return false;
      61             :   const AliHLTDataDeflaterSimple::AliHLTDataDeflaterParameter& parameter
      62           0 :     =fParameterDefinitions[fCurrentParameter];
      63             : 
      64           0 :   AliHLTUInt8_t switchBit=0;
      65           0 :   if (!InputBit(switchBit))
      66           0 :     return false;
      67           0 :   int readlength=switchBit?parameter.GetBitLength():parameter.GetReducedBitLength();
      68           0 :   if (!GetBits(value, readlength))
      69           0 :     return false;
      70           0 :   length=parameter.GetBitLength();
      71             : 
      72           0 :   return true;
      73           0 : }