online_distribution/eventlibraries/gzbuffer.cc

0001 #include "gzbuffer.h"
0002 #include <zlib.h>
0003
0004 // the constructor first ----------------
0005 gzbuffer::gzbuffer (PHDWORD *array , const int length )
0006
0007 {
0008   is_good =1;
0009   bufferarray=0;
0010   theBuffer=0;
0011
0012   uLong bytes;
0013   uLongf outputlength_in_bytes;
0014   if (array[1] == GZBUFFERMARKER )
0015     {
0016       bytes = array[0]-4*BUFFERHEADERLENGTH;
0017       outputlength_in_bytes = array[3];
0018     }
0019   else if ( u4swap(array[1]) == GZBUFFERMARKER)
0020     {
0021       bytes = i4swap(array[0])-16;
0022       outputlength_in_bytes = i4swap(array[3]);
0023     }
0024
0025   else
0026     {
0027     COUT << " wrong buffer" << std::endl;
0028     is_good = 0;
0029     return;
0030     }
0031
0032
0033   int outputlength =  (outputlength_in_bytes+3)/4;
0034   bufferarray = new PHDWORD[outputlength];
0035   uLongf i =  outputlength_in_bytes;
0036
0037   uncompress ( (Bytef*) bufferarray, &i,  (Bytef*) &array[4], bytes);
0038
0039   theBuffer = new prdfBuffer(bufferarray, outputlength);
0040
0041 }
0042
0043 int gzbuffer::getBufferSequence() const
0044 {
0045   if ( !theBuffer) return 0;
0046   return theBuffer->getBufferSequence();
0047 }
0048
0049
0050 // ---------------------------------------------------------
0051 Event * gzbuffer::getEvent()
0052 {
0053   return theBuffer->getEvent();
0054 }
0055
0056 // ---------------------------------------------------------
0057
0058 gzbuffer::~gzbuffer()
0059 {
0060   if ( bufferarray) delete [] bufferarray;
0061   if ( theBuffer) delete theBuffer;
0062 }
0063
0064