00001 #!/usr/local/bin/python
00002 #
00003 # Copyright 2006
00004 # by
00005 # The Board of Trustees of the
00006 # Leland Stanford Junior University.
00007 # All rights reserved.
00008 #
00009
00010 __facility__ = "Online"
00011 __abstract__ = "LDF event contribution class"
00012 __author__ = "R. Claus <Claus@SLAC.Stanford.edu> SLAC - GLAST LAT I&T/Online"
00013 __date__ = "3/30/2006"
00014 __updated__ = ("$Date: 2006/07/14 22:27:33 $").split(' ')[1]
00015 __version__ = "$Revision: 1.1 $"
00016 __release__ = "$Name: R04-12-00 $"
00017 __credits__ = "SLAC"
00018
00019 #import copyright_SLAC
00020
00021 import struct
00022 import LDF
00023
00024 import LATTE.merger.geb as geb
00025
00026
00027 class LdfContribution(geb.GebContribution):
00028 def __init__(self, contributor, contribution):
00029 geb.GebContribution.__init__(self, contributor)
00030 #self.__contribution = LDF.EBFevent.create(contribution, len(contribution)) # Swaps
00031 self.__contribution = contribution
00032
00033 def identity(self):
00034 #return self.__contribution.identity().value()
00035 return struct.unpack('>L', self.__contribution[0*4:1*4])[0]
00036
00037 def length(self):
00038 #return self.__contribution.length()
00039 return struct.unpack('>L', self.__contribution[1*4:2*4])[0]
00040
00041 def sequence(self):
00042 summary = struct.unpack('>L', self.__contribution[3*4:4*4])[0]
00043 #evtNo = LDF.EventSummary.eventNumber(summary)
00044 #tag = LDF.EventSummary.tag (summary)
00045 evtNo = (summary << 1) & 0x1fffc # 0x7fff << 2
00046 tag = (summary >> 28) & 0x0003
00047 return self.contributor().sequence(evtNo | tag)
00048
00049 def buffer(self):
00050 #return self.__contribution.string() # Swaps
00051 return self.__contribution
