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/*
Copyright (C) 2008 Hans Baier
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.
$Id$
*/
#include <boost/noncopyable.hpp>
#include <boost/scoped_ptr.hpp>
#include "pbd/signals.h"
#include "ardour/libardour_visibility.h"
#include "ardour/types.h"
#include "ardour/session_handle.h"
#ifndef __libardour_ticker_h__
#define __libardour_ticker_h__
namespace ARDOUR {
class Session;
class MidiPort;
class LIBARDOUR_API MidiClockTicker : public SessionHandlePtr, boost::noncopyable
{
public:
MidiClockTicker ();
virtual ~MidiClockTicker();
void tick (const framepos_t& transport_frames, pframes_t nframes);
bool has_midi_port() const { return _midi_port != 0; }
void set_session (Session* s);
void session_going_away();
/// slot for the signal session::MIDIClock_PortChanged
void update_midi_clock_port();
/// slot for the signal session::TransportStateChange
void transport_state_changed();
/// slot for the signal session::TransportLooped
void transport_looped();
/// slot for the signal session::Located
void session_located();
/// pulses per quarter note (default 24)
void set_ppqn(int ppqn) { _ppqn = ppqn; }
private:
boost::shared_ptr<MidiPort> _midi_port;
int _ppqn;
double _last_tick;
bool _send_pos;
bool _send_state;
class Position;
boost::scoped_ptr<Position> _pos;
double one_ppqn_in_frames (framepos_t transport_position);
void send_midi_clock_event (pframes_t offset, pframes_t nframes);
void send_start_event (pframes_t offset, pframes_t nframes);
void send_continue_event (pframes_t offset, pframes_t nframes);
void send_stop_event (pframes_t offset, pframes_t nframes);
void send_position_event (uint32_t midi_clocks, pframes_t offset, pframes_t nframes);
};
}
// namespace
#endif /* __libardour_ticker_h__ */
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