X-Git-Url: http://git.uio.no/git/?a=blobdiff_plain;f=HLT%2FTPCLib%2Fcomp%2FAliHLTTPCCompModelInflater.cxx;h=34e2086d3f6a1f8fbb876cf59d290a35421f6e86;hb=430ec2c036a60e494fd65c461ff0d95b6e25e611;hp=9b47672f580e7f317f5a23910854929229bf46f8;hpb=ff2f0f94350fae2856056c7b33e3e56a583b7a98;p=u%2Fmrichter%2FAliRoot.git

diff --git a/HLT/TPCLib/comp/AliHLTTPCCompModelInflater.cxx b/HLT/TPCLib/comp/AliHLTTPCCompModelInflater.cxx
index 9b47672f580..34e2086d3f6 100644
--- a/HLT/TPCLib/comp/AliHLTTPCCompModelInflater.cxx
+++ b/HLT/TPCLib/comp/AliHLTTPCCompModelInflater.cxx
@@ -1,24 +1,32 @@
-// $Id: AliHLTTPCCompModelInflater.cxx,v 1.2 2006/08/10 09:46:51 richterm Exp $
+// $Id$
 
-/**************************************************************************
- * TPCCompModelInflaterright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
- *                                                                        *
- * Authors: Timm Steinbeck <timm@kip.uni-heidelberg.de>                   *
- *          for The ALICE Off-line Project.                               *
- *                                                                        *
- * Permission to use, copy, modify and distribute this software and its   *
- * documentation strictly for non-commercial purposes is hereby granted   *
- * without fee, provided that the above copyright notice appears in all   *
- * copies and that both the copyright notice and this permission notice   *
- * appear in the supporting documentation. The authors make no claims     *
- * about the suitability of this software for any purpose. It is          *
- * provided "as is" without express or implied warranty.                  *
- **************************************************************************/
+//**************************************************************************
+//* This file is property of and copyright by the ALICE HLT Project        * 
+//* ALICE Experiment at CERN, All rights reserved.                         *
+//*                                                                        *
+//* Primary Authors: Timm Steinbeck <timm@kip.uni-heidelberg.de>           *
+//*                  for The ALICE HLT Project.                            *
+//*                                                                        *
+//* Permission to use, copy, modify and distribute this software and its   *
+//* documentation strictly for non-commercial purposes is hereby granted   *
+//* without fee, provided that the above copyright notice appears in all   *
+//* copies and that both the copyright notice and this permission notice   *
+//* appear in the supporting documentation. The authors make no claims     *
+//* about the suitability of this software for any purpose. It is          *
+//* provided "as is" without express or implied warranty.                  *
+//**************************************************************************
 
 /** @file   AliHLTTPCCompModelInflater.cxx
     @author Timm Steinbeck
     @date   
-    @brief  A copy processing component for the HLT. */
+    @brief  A copy processing component for the HLT.
+    * 
+    * The model inflater is the counterpart of the deflater component
+    * which decompresses the data after a conversion and compression.
+    * The deflater is followed by a deconverter in order to get the
+    * original standard HLT cluster track format back
+    *
+ */
 
 #if __GNUC__ >= 3
 using namespace std;
@@ -47,6 +55,161 @@ AliHLTTPCCompModelInflater::~AliHLTTPCCompModelInflater()
       // see header file for class documentation
     }
 
+void AliHLTTPCCompModelInflater::InitBitDataInput( AliHLTUInt8_t* input, UInt_t inputSize )
+    {
+      // sse header file for class documentation
+      fBitDataCurrentWord = 0;
+      fBitDataCurrentPosInWord = 7;
+      fBitDataCurrentInput = fBitDataCurrentInputStart = input;
+      fBitDataCurrentInputEnd = input+inputSize;
+      fBitDataCurrentWord = *fBitDataCurrentInput;
+    }
+
+bool AliHLTTPCCompModelInflater::InputBit( AliHLTUInt8_t & value )
+    {
+      // see header file for class documenation
+      if ( fBitDataCurrentInput>=fBitDataCurrentInputEnd )
+	return false;
+      value = (fBitDataCurrentWord >> fBitDataCurrentPosInWord) & 1;
+      if ( fBitDataCurrentPosInWord )
+	fBitDataCurrentPosInWord--;
+      else
+	{
+	  fBitDataCurrentInput++;
+	  if ( fBitDataCurrentInput<fBitDataCurrentInputEnd )
+	    {
+	      fBitDataCurrentWord = *fBitDataCurrentInput;
+	      fBitDataCurrentPosInWord = 7;
+	    }
+	}
+      return true;
+    }
+
+bool AliHLTTPCCompModelInflater::InputBits( AliHLTUInt8_t & value, UInt_t const & bitCount )
+    {
+      // see header file for clas documentation
+      if ( bitCount>8 )
+	{
+	  HLTFatal( "Internal error: Attempt to write more than 32 bits (%u)", (unsigned)bitCount );
+	  return false;
+	}
+      AliHLTUInt64_t temp;
+      if ( !InputBits( temp, bitCount ) )
+	return false;
+      value = (AliHLTUInt8_t)( temp & (AliHLTUInt64_t)0xFFFFFFFFULL );
+      return true;
+    }
+
+bool AliHLTTPCCompModelInflater::InputBits( AliHLTUInt16_t & value, UInt_t const & bitCount )
+    {
+      // see header file for class documenation
+      if ( bitCount>16 )
+	{
+	  HLTFatal( "Internal error: Attempt to write more than 32 bits (%u)", (unsigned)bitCount );
+	  return false;
+	}
+      AliHLTUInt64_t temp;
+      if ( !InputBits( temp, bitCount ) )
+	return false;
+      value = (AliHLTUInt16_t)( temp & (AliHLTUInt64_t)0xFFFFFFFFULL );
+      return true;
+    }
+
+bool AliHLTTPCCompModelInflater::InputBits( AliHLTUInt32_t & value, UInt_t const & bitCount )
+    {
+      // see header file for class documentation
+      if ( bitCount>32 )
+	{
+	  HLTFatal( "Internal error: Attempt to write more than 32 bits (%u)", (unsigned)bitCount );
+	  return false;
+	}
+      AliHLTUInt64_t temp;
+      if ( !InputBits( temp, bitCount ) )
+	return false;
+      value = (AliHLTUInt32_t)( temp & (AliHLTUInt64_t)0xFFFFFFFFULL );
+      return true;
+    }
+
+bool AliHLTTPCCompModelInflater::InputBits( Int_t & value, UInt_t const & bitCount )
+    {
+      // see header file for class documentation
+      if ( bitCount>32 )
+	{
+	  HLTFatal( "Internal error: Attempt to write more than 32 bits (%u)", (unsigned)bitCount );
+	  return false;
+	}
+      AliHLTUInt64_t temp;
+      if ( !InputBits( temp, bitCount ) )
+	return false;
+      value = (Int_t)( temp & (AliHLTUInt64_t)0xFFFFFFFFULL );
+      return true;
+    }
+
+bool AliHLTTPCCompModelInflater::InputBits( AliHLTUInt64_t & value, UInt_t const & bitCount )
+    {
+      // see header file for class documenation
+      if ( bitCount>64 )
+	{
+	  HLTFatal( "Internal error: Attempt to write more than 64 bits (%u)", (unsigned)bitCount );
+	  return false;
+	}
+      UInt_t bitsToRead=bitCount;
+      UInt_t curBitCount;
+      value = 0;
+      while ( bitsToRead>0 )
+	{
+	  if ( fBitDataCurrentInput>=fBitDataCurrentInputEnd )
+	    return false;
+	  if ( bitsToRead >= fBitDataCurrentPosInWord+1 )
+	    curBitCount = fBitDataCurrentPosInWord+1;
+	  else
+	    curBitCount = bitsToRead;
+	  value = (value << curBitCount) | ( (fBitDataCurrentWord >> (fBitDataCurrentPosInWord-curBitCount+1)) & ((1 << curBitCount)-1) );
+	  if ( fBitDataCurrentPosInWord < curBitCount )
+	    {
+	      fBitDataCurrentInput++;
+	      if ( fBitDataCurrentInput<fBitDataCurrentInputEnd )
+		{
+		  fBitDataCurrentWord = *fBitDataCurrentInput;
+		  fBitDataCurrentPosInWord = 7;
+		}
+	    }
+	  else
+	    fBitDataCurrentPosInWord -= curBitCount;
+	  bitsToRead -= curBitCount;
+	}
+      return true;
+    }
+
+void AliHLTTPCCompModelInflater::Pad8Bits()
+    {
+      // see header file for class documenation
+      if ( fBitDataCurrentPosInWord == 7 )
+	return;
+      fBitDataCurrentInput++;
+      if ( fBitDataCurrentInput<fBitDataCurrentInputEnd )
+	{
+	  fBitDataCurrentWord = *fBitDataCurrentInput;
+	  fBitDataCurrentPosInWord = 7;
+	}
+    }
+
+bool AliHLTTPCCompModelInflater::InputBytes( AliHLTUInt8_t* data, UInt_t const & byteCount )
+    {
+      // see header file for class documenation
+      Pad8Bits();
+      if ( fBitDataCurrentInput+byteCount>fBitDataCurrentInputEnd )
+	return false;
+      memcpy( data, fBitDataCurrentInput, byteCount );
+      fBitDataCurrentInput += byteCount;
+      if ( fBitDataCurrentInput<fBitDataCurrentInputEnd )
+	{
+	  fBitDataCurrentWord = *fBitDataCurrentInput;
+	  fBitDataCurrentPosInWord = 7;
+	}
+      return true;
+    }
+
 int AliHLTTPCCompModelInflater::DecompressTracks( AliHLTUInt8_t* inData, UInt_t const& inputSize, AliHLTUInt8_t* output, UInt_t& outputSize )
     {
       // see header file for class documentation
@@ -91,8 +254,8 @@ int AliHLTTPCCompModelInflater::DecompressTracks( AliHLTUInt8_t* inData, UInt_t
       
       AliHLTTPCClusterModel *cluster;
       
-      Int_t timeo,pado,chargeo,padshapeo,timeshapeo;
-      timeo=pado=chargeo=padshapeo=timeshapeo=0;
+      Int_t chargeo,padshapeo,timeshapeo;
+      chargeo=padshapeo=timeshapeo=0;
       unsigned trackCnt=0;
       while( !EndOfBitInput() )
 	{