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/*
Copyright (C) 2006 Paul Davis
Written by Dave Robillard, 2006
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_source_h__
#define __ardour_midi_source_h__
#include <string>
#include <time.h>
#include <glibmm/thread.h>
#include <boost/enable_shared_from_this.hpp>
#include "pbd/stateful.h"
#include "pbd/xml++.h"
#include "evoral/Sequence.hpp"
#include "ardour/ardour.h"
#include "ardour/buffer.h"
#include "ardour/source.h"
#include "ardour/beats_frames_converter.h"
namespace ARDOUR {
class MidiStateTracker;
class MidiModel;
template<typename T> class MidiRingBuffer;
/** Source for MIDI data */
class MidiSource : virtual public Source, public boost::enable_shared_from_this<MidiSource>
{
public:
typedef double TimeType;
MidiSource (Session& session, std::string name, Source::Flag flags = Source::Flag(0));
MidiSource (Session& session, const XMLNode&);
virtual ~MidiSource ();
boost::shared_ptr<MidiSource> clone (Evoral::MusicalTime begin = Evoral::MinMusicalTime,
Evoral::MusicalTime end = Evoral::MaxMusicalTime);
/** Read the data in a given time range from the MIDI source.
* All time stamps in parameters are in audio frames (even if the source has tempo time).
* \param dst Ring buffer where read events are written
* \param source_start Start position of the SOURCE in this read context
* \param start Start of range to be read
* \param cnt Length of range to be read (in audio frames)
* \param tracker an optional pointer to MidiStateTracker object, for note on/off tracking
*/
virtual framecnt_t midi_read (Evoral::EventSink<framepos_t>& dst,
framepos_t source_start,
framepos_t start, framecnt_t cnt,
MidiStateTracker*,
std::set<Evoral::Parameter> const &) const;
virtual framecnt_t midi_write (MidiRingBuffer<framepos_t>& src,
framepos_t source_start,
framecnt_t cnt);
virtual void append_event_unlocked_beats(const Evoral::Event<Evoral::MusicalTime>& ev) = 0;
virtual void append_event_unlocked_frames(const Evoral::Event<framepos_t>& ev,
framepos_t source_start) = 0;
virtual bool empty () const;
virtual framecnt_t length (framepos_t pos) const;
virtual void update_length (framepos_t pos, framecnt_t cnt);
virtual void mark_streaming_midi_write_started (NoteMode mode, framepos_t start_time);
virtual void mark_streaming_write_started ();
virtual void mark_streaming_write_completed ();
virtual void session_saved();
std::string captured_for() const { return _captured_for; }
void set_captured_for (std::string str) { _captured_for = str; }
uint32_t read_data_count() const { return _read_data_count; }
uint32_t write_data_count() const { return _write_data_count; }
static PBD::Signal1<void,MidiSource*> MidiSourceCreated;
XMLNode& get_state ();
int set_state (const XMLNode&, int version);
bool length_mutable() const { return true; }
virtual void load_model(bool lock=true, bool force_reload=false) = 0;
virtual void destroy_model() = 0;
/** This must be called with the source lock held whenever the
* source/model contents have been changed (reset iterators/cache/etc).
*/
void invalidate();
void set_note_mode(NoteMode mode);
boost::shared_ptr<MidiModel> model() { return _model; }
void set_model (boost::shared_ptr<MidiModel>);
void drop_model();
Evoral::ControlList::InterpolationStyle interpolation_of (Evoral::Parameter) const;
void set_interpolation_of (Evoral::Parameter, Evoral::ControlList::InterpolationStyle);
void copy_interpolation_from (boost::shared_ptr<MidiSource>);
void copy_interpolation_from (MidiSource *);
AutoState automation_state_of (Evoral::Parameter) const;
void set_automation_state_of (Evoral::Parameter, AutoState);
void copy_automation_state_from (boost::shared_ptr<MidiSource>);
void copy_automation_state_from (MidiSource *);
/** Emitted when a different MidiModel is set */
PBD::Signal0<void> ModelChanged;
/** Emitted when a parameter's interpolation style is changed */
PBD::Signal2<void, Evoral::Parameter, Evoral::ControlList::InterpolationStyle> InterpolationChanged;
/** Emitted when a parameter's automation state is changed */
PBD::Signal2<void, Evoral::Parameter, AutoState> AutomationStateChanged;
protected:
virtual void flush_midi() = 0;
virtual framepos_t read_unlocked (Evoral::EventSink<framepos_t>& dst,
framepos_t position,
framepos_t start, framecnt_t cnt,
MidiStateTracker* tracker) const = 0;
virtual framepos_t write_unlocked (MidiRingBuffer<framepos_t>& dst,
framepos_t position,
framecnt_t cnt) = 0;
std::string _captured_for;
mutable uint32_t _read_data_count; ///< modified in read()
mutable uint32_t _write_data_count; ///< modified in write()
boost::shared_ptr<MidiModel> _model;
bool _writing;
mutable Evoral::Sequence<Evoral::MusicalTime>::const_iterator _model_iter;
mutable bool _model_iter_valid;
mutable double _length_beats;
mutable framepos_t _last_read_end;
framepos_t _last_write_end;
/** Map of interpolation styles to use for Parameters; if they are not in this map,
* the correct interpolation style can be obtained from EventTypeMap::interpolation_of ()
*/
typedef std::map<Evoral::Parameter, Evoral::ControlList::InterpolationStyle> InterpolationStyleMap;
InterpolationStyleMap _interpolation_style;
/** Map of automation states to use for Parameters; if they are not in this map,
* the correct automation state is Off.
*/
typedef std::map<Evoral::Parameter, AutoState> AutomationStateMap;
AutomationStateMap _automation_state;
};
}
#endif /* __ardour_midi_source_h__ */
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