RethBuf.hpp

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// $Id: RethBuf.hpp 1186 2019-07-12 17:49:59Z mueller $
// SPDX-License-Identifier: GPL-3.0-or-later
// Copyright 2017-2018 by Walter F.J. Mueller <W.F.J.Mueller@gsi.de>
// 
// Revision History: 
// Date         Rev Version  Comment
// 2018-12-22  1091   1.0.1  Dump() not longer virtual (-Wnon-virtual-dtor fix)
// 2017-04-17   880   1.0    Initial version
// 2017-02-12   850   0.1    First draft
// ---------------------------------------------------------------------------
 
 
#ifndef included_Retro_RethBuf
#define included_Retro_RethBuf 1
 
#include <memory>
#include <string>
 
#include "librtools/Rtime.hpp"
 
namespace Retro {
 
  class RethBuf {
    public:
      typedef std::shared_ptr<RethBuf> pbuf_t;
    
                    RethBuf();
                   ~RethBuf();
    
      void          Clear();
      void          SetSize(uint16_t size);
      void          SetTime();
      void          SetTime(const Rtime& time);
 
      uint16_t      Size() const;
      const Rtime&  Time() const;
 
      const uint8_t*  Buf8() const;
      const uint16_t* Buf16() const;
      const uint32_t* Buf32() const;
 
      uint8_t*      Buf8();
      uint16_t*     Buf16();
      uint32_t*     Buf32();
 
      void          SetMacDestination(uint64_t mac);
      void          SetMacSource(uint64_t mac);
 
      uint64_t      MacDestination() const;
      uint64_t      MacSource() const;
      uint16_t      Type() const;
      bool          IsMcast() const;
      bool          IsBcast() const;
 
      ssize_t       Read(int fd);
      ssize_t       Write(int fd) const;
 
      std::string   FrameInfo() const;
 
      void          Dump(std::ostream& os, int ind=0, const char* text=0,
                         int detail=0) const;
 
    // some constants
      static const size_t   kMaxSize  = 1514;  
      static const size_t   kMinSize  =   60;  
      static const size_t   kCrcSize  =    4;  
      static const size_t   kWOffDstMac =  0;  
      static const size_t   kWOffSrcMac =  3;  
      static const size_t   kWOffTyp    =  6;  
 
    protected:
      Rtime         fTime;
      uint16_t      fSize;
      uint8_t       fBuf[kMaxSize+kCrcSize];
  };
 
} // end namespace Retro
 
#include "RethBuf.ipp"
 
#endif