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audio_track.h

/*
    Copyright (C) 2002-2006 Paul Davis 

    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 of the License, 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 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., 675 Mass Ave, Cambridge, MA 02139, USA.

*/

#ifndef __ardour_audio_track_h__
#define __ardour_audio_track_h__

#include <ardour/track.h>

namespace ARDOUR {

class Session;
class AudioDiskstream;
class AudioPlaylist;
class RouteGroup;

class AudioTrack : public Track
{
  public:
      AudioTrack (Session&, string name, Route::Flag f = Route::Flag (0), TrackMode m = Normal);
      AudioTrack (Session&, const XMLNode&);
      ~AudioTrack ();

      int set_mode (TrackMode m); 
      bool can_use_mode (TrackMode m, bool& bounce_required);

      int roll (nframes_t nframes, nframes_t start_frame, nframes_t end_frame, 
            nframes_t offset, int declick, bool can_record, bool rec_monitors_input);
      
      int no_roll (nframes_t nframes, nframes_t start_frame, nframes_t end_frame, 
            nframes_t offset, bool state_changing, bool can_record, bool rec_monitors_input);
      
      int silent_roll (nframes_t nframes, nframes_t start_frame, nframes_t end_frame, 
            nframes_t offset, bool can_record, bool rec_monitors_input);

      boost::shared_ptr<AudioDiskstream> audio_diskstream() const;

      int use_diskstream (string name);
      int use_diskstream (const PBD::ID& id);
      
      int export_stuff (vector<Sample*>& buffers, uint32_t nbufs, nframes_t nframes, nframes_t end_frame);

      void freeze (InterThreadInfo&);
      void unfreeze ();

      boost::shared_ptr<Region> bounce (InterThreadInfo&);
      boost::shared_ptr<Region> bounce_range (nframes_t start, nframes_t end, InterThreadInfo&);

      int set_state(const XMLNode& node);

  protected:
      XMLNode& state (bool full);

      void passthru_silence (nframes_t start_frame, nframes_t end_frame, 
                         nframes_t nframes, nframes_t offset, int declick,
                         bool meter);

      uint32_t n_process_buffers ();

      int _set_state (const XMLNode&, bool call_base);
      
  private:
      int  set_diskstream (boost::shared_ptr<AudioDiskstream>, void *);
      int  deprecated_use_diskstream_connections ();
      void set_state_part_two ();
      void set_state_part_three ();
};

} // namespace ARDOUR

#endif /* __ardour_audio_track_h__ */

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