midi_playlist.h

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/*
    Copyright (C) 2006 Paul Davis
    Author: David Robillard

    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_midi_playlist_h__
#define __ardour_midi_playlist_h__

#include <vector>
#include <list>

#include <boost/utility.hpp>

#include "ardour/ardour.h"
#include "ardour/midi_model.h"
#include "ardour/midi_state_tracker.h"
#include "ardour/note_fixer.h"
#include "ardour/playlist.h"
#include "evoral/Beats.hpp"
#include "evoral/Note.hpp"
#include "evoral/Parameter.hpp"

namespace Evoral {
template<typename Time> class EventSink;
}

namespace ARDOUR
{

class BeatsFramesConverter;
class MidiChannelFilter;
class MidiRegion;
class Session;
class Source;

template<typename T> class MidiRingBuffer;

class LIBARDOUR_API MidiPlaylist : public ARDOUR::Playlist
{
public:
        MidiPlaylist (Session&, const XMLNode&, bool hidden = false);
        MidiPlaylist (Session&, std::string name, bool hidden = false);
        MidiPlaylist (boost::shared_ptr<const MidiPlaylist> other, std::string name, bool hidden = false);

        MidiPlaylist (boost::shared_ptr<const MidiPlaylist> other,
                      framepos_t                            start,
                      framecnt_t                            cnt,
                      std::string                           name,
                      bool                                  hidden = false);

        ~MidiPlaylist ();

        framecnt_t read (Evoral::EventSink<framepos_t>& buf,
                         framepos_t                     start,
                         framecnt_t                     cnt,
                         uint32_t                       chan_n = 0,
                         MidiChannelFilter*             filter = NULL);

        int set_state (const XMLNode&, int version);

        bool destroy_region (boost::shared_ptr<Region>);

        void set_note_mode (NoteMode m) { _note_mode = m; }

        std::set<Evoral::Parameter> contained_automation();

        void region_edited(boost::shared_ptr<Region>         region,
                           const MidiModel::NoteDiffCommand* cmd);

        void reset_note_trackers ();

        void resolve_note_trackers (Evoral::EventSink<framepos_t>& dst, framepos_t time);

protected:
        void remove_dependents (boost::shared_ptr<Region> region);

private:
        typedef Evoral::Note<Evoral::Beats> Note;
        typedef Evoral::Event<framepos_t>   Event;

        struct RegionTracker : public boost::noncopyable {
                MidiStateTracker tracker;  
                NoteFixer        fixer;    
        };

        typedef std::map< Region*, boost::shared_ptr<RegionTracker> > NoteTrackers;

        void dump () const;

        NoteTrackers _note_trackers;
        NoteMode     _note_mode;
        framepos_t   _read_end;
};

} /* namespace ARDOUR */

#endif  /* __ardour_midi_playlist_h__ */