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// $Id: RlinkPacketBufSnd.hpp 666 2015-04-12 21:17:54Z mueller $
//
// Copyright 2014-2015 by Walter F.J. Mueller <W.F.J.Mueller@gsi.de>
//
// This program is free software; you may redistribute and/or modify it under
// the terms of the GNU General Public License as published by the Free
// Software Foundation, either version 2, or at your option any later version.
//
// This program is distributed in the hope that it will be useful, but
// WITHOUT ANY WARRANTY, without even the implied warranty of MERCHANTABILITY
// or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
// for complete details.
// 
// Revision History: 
// Date         Rev Version  Comment
// 2015-04-11   666   1.1    handle xon/xoff escaping, add (Set)XonEscape()
// 2014-12-25   621   1.0.1  Reorganize packet send/revd stats
// 2014-11-14   604   1.0    Initial version
// 2014-11-02   600   0.1    First draft (re-organize PacketBuf for rlink v4)
// ---------------------------------------------------------------------------
 
 
/*!
  \file
  \version $Id: RlinkPacketBufSnd.hpp 666 2015-04-12 21:17:54Z mueller $
  \brief   Declaration of class RlinkPacketBufSnd.
*/
 
#ifndef included_Retro_RlinkPacketBufSnd
#define included_Retro_RlinkPacketBufSnd
 
#include "RlinkPacketBuf.hpp"
#include "RlinkPort.hpp"
 
namespace Retro {
 
  class RlinkPacketBufSnd : public RlinkPacketBuf {
    public:
 
                    RlinkPacketBufSnd();
                    ~RlinkPacketBufSnd();
 
      void          SetXonEscape(bool xon);
      bool          XonEscape() const;
 
      void          Init();
 
      void          PutWithCrc(uint8_t data);
      void          PutWithCrc(uint16_t data);
      void          PutWithCrc(const uint16_t* pdata, size_t count);
      void          PutCrc();
 
      void          PutRawEsc(uint8_t ec);
 
      bool          SndPacket(RlinkPort* port, RerrMsg& emsg);
      bool          SndOob(RlinkPort* port, uint16_t addr, uint16_t data, 
                           RerrMsg& emsg);
      bool          SndKeep(RlinkPort* port, RerrMsg& emsg);
      bool          SndAttn(RlinkPort* port, RerrMsg& emsg);    
      bool          SndNak(RlinkPort* port, RerrMsg& emsg);    
      bool          SndUnJam(RlinkPort* port, RerrMsg& emsg);
 
      size_t        RawSize() const;
 
      void          Dump(std::ostream& os, int ind=0, const char* text=0) const;
 
   // statistics counter indices
      enum stats {
        kStatNTxPktByt=0,                   //!< Tx packet bytes send
        kStatNTxEsc,                        //!< Tx esc escapes
        kStatNTxXEsc                        //!< Tx xon escapes
      };
 
    protected:
      bool          SndRaw(RlinkPort* port, RerrMsg& emsg);
 
    protected:
      bool          fXonEscape;             //!< escape XON/XOFF
      std::vector<uint8_t> fRawBuf;         //!< raw data buffer
  };
 
} // end namespace Retro
 
#include "RlinkPacketBufSnd.ipp"
 
#endif