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/*
Copyright (C) 2007 Paul Davis
Author: Dave 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_model_h__
#define __ardour_midi_model_h__
#include <queue>
#include <deque>
#include <utility>
#include <boost/utility.hpp>
#include <glibmm/thread.h>
#include "pbd/command.h"
#include "ardour/types.h"
#include "ardour/midi_buffer.h"
#include "ardour/midi_ring_buffer.h"
#include "ardour/automatable_sequence.h"
#include "ardour/types.h"
#include "evoral/Note.hpp"
#include "evoral/Sequence.hpp"
namespace ARDOUR {
class Session;
class MidiSource;
/** This is a higher level (than MidiBuffer) model of MIDI data, with separate
* representations for notes (instead of just unassociated note on/off events)
* and controller data. Controller data is represented as part of the
* Automatable base (i.e. in a map of AutomationList, keyed by Parameter).
* Because of this MIDI controllers and automatable controllers/widgets/etc
* are easily interchangeable.
*/
class MidiModel : public AutomatableSequence<Evoral::MusicalTime> {
public:
typedef double TimeType;
MidiModel(MidiSource* s, size_t size=0);
NoteMode note_mode() const { return (percussive() ? Percussive : Sustained); }
void set_note_mode(NoteMode mode) { set_percussive(mode == Percussive); };
/** Add/Remove notes.
* Technically all note operations can be implemented as one of these, but
* a custom command can be more efficient.
*/
class DeltaCommand : public Command {
public:
DeltaCommand (boost::shared_ptr<MidiModel> m, const std::string& name);
DeltaCommand (boost::shared_ptr<MidiModel> m, const XMLNode& node);
const std::string& name() const { return _name; }
void operator()();
void undo();
int set_state (const XMLNode&, int version);
XMLNode& get_state ();
void add(const boost::shared_ptr< Evoral::Note<TimeType> > note);
void remove(const boost::shared_ptr< Evoral::Note<TimeType> > note);
private:
XMLNode &marshal_note(const boost::shared_ptr< Evoral::Note<TimeType> > note);
boost::shared_ptr< Evoral::Note<TimeType> > unmarshal_note(XMLNode *xml_note);
boost::shared_ptr<MidiModel> _model;
const std::string _name;
typedef std::list< boost::shared_ptr< Evoral::Note<TimeType> > > NoteList;
NoteList _added_notes;
NoteList _removed_notes;
};
/** Change note properties.
* More efficient than DeltaCommand and has the important property that
* it leaves the objects in the MidiModel (Notes) the same, thus
* enabling selection and other state to persist across command
* do/undo/redo.
*/
class DiffCommand : public Command {
public:
enum Property {
NoteNumber,
Velocity,
StartTime,
Length,
Channel
};
DiffCommand (boost::shared_ptr<MidiModel> m, const std::string& name);
DiffCommand (boost::shared_ptr<MidiModel> m, const XMLNode& node);
const std::string& name() const { return _name; }
void operator()();
void undo();
int set_state (const XMLNode&, int version);
XMLNode& get_state ();
void change (const boost::shared_ptr<Evoral::Note<TimeType> > note,
Property prop, uint8_t new_value);
void change (const boost::shared_ptr<Evoral::Note<TimeType> > note,
Property prop, TimeType new_time);
private:
boost::shared_ptr<MidiModel> _model;
const std::string _name;
struct NotePropertyChange {
DiffCommand::Property property;
boost::shared_ptr< Evoral::Note<TimeType> > note;
union {
uint8_t old_value;
TimeType old_time;
};
union {
uint8_t new_value;
TimeType new_time;
};
};
typedef std::list<NotePropertyChange> ChangeList;
ChangeList _changes;
XMLNode &marshal_change(const NotePropertyChange&);
NotePropertyChange unmarshal_change(XMLNode *xml_note);
};
MidiModel::DeltaCommand* new_delta_command(const std::string name="midi edit");
MidiModel::DiffCommand* new_diff_command(const std::string name="midi edit");
void apply_command(Session& session, Command* cmd);
void apply_command_as_subcommand(Session& session, Command* cmd);
bool write_to(boost::shared_ptr<MidiSource> source);
// MidiModel doesn't use the normal AutomationList serialisation code
// since controller data is stored in the .mid
XMLNode& get_state();
int set_state(const XMLNode&) { return 0; }
sigc::signal<void> ContentsChanged;
const MidiSource* midi_source() const { return _midi_source; }
void set_midi_source(MidiSource* source) { _midi_source = source; }
boost::shared_ptr<Evoral::Note<TimeType> > find_note (boost::shared_ptr<Evoral::Note<TimeType> >);
private:
struct WriteLockImpl : public AutomatableSequence<Evoral::MusicalTime>::WriteLockImpl {
WriteLockImpl(Glib::Mutex::Lock* source_lock, Glib::RWLock& s, Glib::Mutex& c)
: AutomatableSequence<Evoral::MusicalTime>::WriteLockImpl(s, c)
, source_lock(source_lock)
{}
~WriteLockImpl() {
delete source_lock;
}
Glib::Mutex::Lock* source_lock;
};
public:
virtual WriteLock edit_lock();
virtual WriteLock write_lock();
private:
friend class DeltaCommand;
// We cannot use a boost::shared_ptr here to avoid a retain cycle
MidiSource* _midi_source;
};
} /* namespace ARDOUR */
#endif /* __ardour_midi_model_h__ */
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