/*
 *  stillsstreams.c: Class for elemenary still video streams
 *                   Most functionality is inherited from VideoStream
 *
 *  Copyright (C) 2001 Andrew Stevens <andrew.stevens@philips.com>
 *
 *
 *  This program is free software; you can redistribute it and/or
 *  modify it under the terms of version 2 of the GNU General Public License
 *  as published by the Free Software Foundation.
 *
 *  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 more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 */


#include "videostrm.hh"

class FrameIntervals
{
public:
  virtual int NextFrameInterval () = 0;
};

//
// Class of sequence of frame intervals.
//

class ConstantFrameIntervals:public FrameIntervals
{
public:
  ConstantFrameIntervals (int _frame_interval):frame_interval (_frame_interval)
  {
  }
  int NextFrameInterval ()
  {
    return frame_interval;
  };
private:
  int frame_interval;
};


//
// Class for video stills sequence for (S)VCD non-mixed stills segment 
// item
//

class StillsStream:public VideoStream
{
public:
  StillsStream (IBitStream & ibs,
		OutputStream & into, FrameIntervals * frame_ints):VideoStream (ibs, into),
    current_PTS (0LL), current_DTS (0LL), intervals (frame_ints)
  {
  }
  void Init ();

private:
  virtual void NextDTSPTS (clockticks & DTS, clockticks & PTS);
  clockticks current_PTS;
  clockticks current_DTS;
  FrameIntervals *intervals;

  int opt_mux_format;
};

//
// Class for video stills sequence for VCD mixed stills Segment item.
// 

class VCDStillsStream:public StillsStream
{
public:
  VCDStillsStream (IBitStream & ibs,
		   OutputStream & into, FrameIntervals * frame_ints):StillsStream (ibs, into,
										   frame_ints),
    sibling (0), stream_mismatch_warned (false)
  {
  }

  void SetSibling (VCDStillsStream *);
  virtual bool MuxPossible ();

private:
  bool LastSectorLastAU ();
  VCDStillsStream *sibling;
  bool stream_mismatch_warned;
};




/* 
 * Local variables:
 *  c-file-style: "stroustrup"
 *  tab-width: 4
 *  indent-tabs-mode: nil
 * End:
 */