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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 <sigc++/signal.h>
#include <glibmm/thread.h>
#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 MidiModel;
template<typename T> class MidiRingBuffer;
/** Source for MIDI data */
class MidiSource : public Source
{
public:
typedef double TimeType;
MidiSource (Session& session, std::string name);
MidiSource (Session& session, const XMLNode&);
virtual ~MidiSource ();
/* Stub Readable interface */
virtual nframes64_t read (Sample*, nframes64_t pos, nframes64_t cnt, int channel) const { return 0; }
virtual nframes64_t readable_length() const { return length(); }
virtual uint32_t n_channels () const { return 1; }
// FIXME: integrate this with the Readable::read interface somehow
virtual nframes_t midi_read (MidiRingBuffer<nframes_t>& dst, nframes_t start, nframes_t cnt,
nframes_t stamp_offset, nframes_t negative_stamp_offset) const;
virtual nframes_t midi_write (MidiRingBuffer<nframes_t>& src, nframes_t cnt);
virtual void append_event_unlocked_beats(const Evoral::Event<double>& ev) = 0;
virtual void append_event_unlocked_frames(const Evoral::Event<nframes_t>& ev) = 0;
virtual void mark_for_remove() = 0;
virtual void mark_streaming_midi_write_started (NoteMode mode, nframes_t start_time);
virtual void mark_streaming_write_started ();
virtual void mark_streaming_write_completed ();
uint64_t timeline_position () { return _timeline_position; }
void set_timeline_position (nframes_t when);
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 sigc::signal<void,MidiSource*> MidiSourceCreated;
// Signal a range of recorded data is available for reading from model()
mutable sigc::signal<void,nframes_t,nframes_t> ViewDataRangeReady;
XMLNode& get_state ();
int set_state (const XMLNode&);
bool length_mutable() const { return true; }
virtual void load_model(bool lock=true, bool force_reload=false) = 0;
virtual void destroy_model() = 0;
void set_note_mode(NoteMode mode);
boost::shared_ptr<MidiModel> model() { return _model; }
void set_model(boost::shared_ptr<MidiModel> m) { _model = m; }
void drop_model() { _model.reset(); }
const Evoral::TimeConverter<double, nframes_t>& time_converter() const {
return _converter;
}
protected:
virtual void flush_midi() = 0;
virtual nframes_t read_unlocked (MidiRingBuffer<nframes_t>& dst, nframes_t start, nframes_t cnt,
nframes_t stamp_offset, nframes_t negative_stamp_offset) const = 0;
virtual nframes_t write_unlocked (MidiRingBuffer<nframes_t>& dst, nframes_t cnt) = 0;
mutable Glib::Mutex _lock;
std::string _captured_for;
uint64_t _timeline_position;
mutable uint32_t _read_data_count; ///< modified in read()
mutable uint32_t _write_data_count; ///< modified in write()
BeatsFramesConverter _converter;
boost::shared_ptr<MidiModel> _model;
bool _writing;
mutable Evoral::Sequence<double>::const_iterator _model_iter;
mutable nframes_t _last_read_end;
private:
bool file_changed (std::string path);
};
}
#endif /* __ardour_midi_source_h__ */
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