Sample program showing howto read raw data and convert them to an Altrolike Ascii...

diff --git a/HLT/programs/read.cxx b/HLT/programs/read.cxx
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+/* $id$
+Author: Constantin Loizides <mailto: loizides@ikf.physik.uni-frankfurt.de
+*/
+
+#include <stream.h>
+#include "AliL3MemHandler.h"
+#include "AliL3AltroMemHandler.h"
+#include "AliL3DigitData.h"
+
+/**
+Example program how to open and read a raw datafile.
+And to store results in an Altro like data format. 
+*/
+
+int main(int argc,char **argv)
+{
+  UInt_t nrows=175;
+  Bool_t altroout=kFALSE;
+  FILE *afile=0;
+  if(argc<2)
+    {
+      cout<<"Usage: read datafile [padrows]"<<endl;
+      return -1;
+    }
+  if (argc>2) {
+    nrows=atoi(argv[2]);
+  }
+  if (argc>3) {
+    altroout=kTRUE;
+    afile=fopen(argv[3],"w");
+  }
+
+  //Filehandler object:
+  AliL3MemHandler file;
+  
+  //Open the data file:
+  if(!file.SetBinaryInput(argv[1]))
+    {
+      cerr<<"Error opening file "<<argv[1]<<endl;
+      return -1;
+    }
+  
+  //Create an RowData object to access the data
+  AliL3DigitRowData *digits=0;
+  UInt_t ndigits=0;
+  
+  //Read the file, and store the data in memory. Return value is a pointer to the data.
+  digits = file.CompBinary2Memory(ndigits);
+
+  //Create an ALtroMemHandler object
+  AliL3AltroMemHandler altromem;
+  if(altroout) altroout=altromem.SetBinaryOutput(afile);
+  
+  UShort_t time,charge;
+  UChar_t pad;
+  for(UInt_t row=0; row<nrows; row++) //Loop over padrows
+    {
+      //Get the data on this padrow:
+      AliL3DigitData *dataPt = (AliL3DigitData*)digits->fDigitData;
+      
+      //Loop over all digits on this padrow:
+      for(UInt_t ndig=0; ndig<=digits->fNDigit; ndig++)
+       {
+         pad = dataPt[ndig].fPad;
+         time = dataPt[ndig].fTime;
+         charge = dataPt[ndig].fCharge;
+         cout << "Padrow " << row << " pad " << (int)pad << " time " <<(int) time << " charge " << (int)charge << endl;
+         if(altroout) altromem.Write(row,pad,charge,time);
+       }
+      
+      //Move the pointer to the next padrow:
+      file.UpdateRowPointer(digits);
+    }
+  
+  if(afile) {
+    altromem.WriteFinal();
+    fclose(afile);
+  }
+  return 0;
+}