X-Git-Url: http://git.uio.no/git/?a=blobdiff_plain;f=RAW%2FAliRawEquipmentHeader.cxx;h=51ac92e4f0686e82c39703b388dda137830196a2;hb=d6e3603846ed2e58053850d34f29454061616747;hp=65e1561c584ae211b6e8286f6e7be6c36277c776;hpb=c53ff744a797c5cbae47efcd91afb9f460eda964;p=u%2Fmrichter%2FAliRoot.git

diff --git a/RAW/AliRawEquipmentHeader.cxx b/RAW/AliRawEquipmentHeader.cxx
index 65e1561c584..51ac92e4f06 100644
--- a/RAW/AliRawEquipmentHeader.cxx
+++ b/RAW/AliRawEquipmentHeader.cxx
@@ -1,6 +1,3 @@
-// @(#)alimdc:$Name$:$Id$
-// Author: Fons Rademakers  26/11/99
-
 /**************************************************************************
  * Copyright(c) 1998-2003, ALICE Experiment at CERN, All rights reserved. *
  *                                                                        *
@@ -16,14 +13,18 @@
  * provided "as is" without express or implied warranty.                  *
  **************************************************************************/
 
+// @(#)alimdc:$Name$:$Id$
+// Author: Fons Rademakers  26/11/99
+
 //////////////////////////////////////////////////////////////////////////
 //                                                                      //
 // AliRawEquipmentHeader                                                //
 //                                                                      //
 //////////////////////////////////////////////////////////////////////////
 
-#include "AliRawEquipmentHeader.h"
+#include <Bytes.h>
 
+#include "AliRawEquipmentHeader.h"
 
 ClassImp(AliRawEquipmentHeader)
 
@@ -31,7 +32,7 @@ ClassImp(AliRawEquipmentHeader)
 AliRawEquipmentHeader::AliRawEquipmentHeader():
   fSize(0),
   fEquipmentType(0),
-  fEquipmentID(0),
+  fEquipmentID(0xffffffff),
   fBasicElementSizeType(0)
 {
   // Default constructor
@@ -39,6 +40,15 @@ AliRawEquipmentHeader::AliRawEquipmentHeader():
     fTypeAttribute[i] = 0;
 }
 
+//______________________________________________________________________________
+UInt_t AliRawEquipmentHeader::SwapWord(UInt_t x) const
+{
+   // Swap the endianess of the integer value 'x'
+
+   return (((x & 0x000000ffU) << 24) | ((x & 0x0000ff00U) <<  8) |
+           ((x & 0x00ff0000U) >>  8) | ((x & 0xff000000U) >> 24));
+}
+
 //______________________________________________________________________________
 void AliRawEquipmentHeader::Swap()
 {
@@ -46,10 +56,22 @@ void AliRawEquipmentHeader::Swap()
    // has already been swapped. This method is only called when the
    // header is read from the DATE event builder (GDC).
 
-   fSize                 = net2host(fSize);
-   fEquipmentType        = net2host(fEquipmentType);
-   fEquipmentID          = net2host(fEquipmentID);
-   fBasicElementSizeType = net2host(fBasicElementSizeType);
+   fSize                 = SwapWord(fSize);
+   fEquipmentType        = SwapWord(fEquipmentType);
+   fEquipmentID          = SwapWord(fEquipmentID);
+   fBasicElementSizeType = SwapWord(fBasicElementSizeType);
    for (int i = 0; i < kAttributeWords; i++)
-      fTypeAttribute[i] = net2host(fTypeAttribute[i]);
+      fTypeAttribute[i] = SwapWord(fTypeAttribute[i]);
+}
+
+//______________________________________________________________________________
+void AliRawEquipmentHeader::Reset()
+{
+  // Reset the contents of the equipment
+  // header data
+  fSize = fEquipmentType = fBasicElementSizeType = 0;
+  fEquipmentID = 0xffffffff;
+
+  for(Int_t i = 0; i < kAttributeWords; i++)
+    fTypeAttribute[i] = 0;
 }