1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
|
/*
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 "pbd/signals.h"
#include "ardour/types.h"
#include "ardour/session_handle.h"
#ifndef TICKER_H_
#define TICKER_H_
namespace MIDI {
class Port;
}
namespace ARDOUR
{
class Session;
class Ticker : public SessionHandlePtr
{
public:
Ticker() {};
virtual ~Ticker() {}
virtual void tick (
const framepos_t& transport_frames,
const Timecode::BBT_Time& transport_bbt,
const Timecode::Time& transport_timecode) = 0;
void set_session (Session* s);
};
class MidiClockTicker : public Ticker
{
/// Singleton
private:
MidiClockTicker() : _midi_port(0), _ppqn(24), _last_tick(0.0) {};
MidiClockTicker( const MidiClockTicker& );
MidiClockTicker& operator= (const MidiClockTicker&);
public:
virtual ~MidiClockTicker() {};
static MidiClockTicker& instance() {
static MidiClockTicker _instance;
return _instance;
}
void tick(
const framepos_t& transport_frames,
const Timecode::BBT_Time& transport_bbt,
const Timecode::Time& transport_timecode);
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::PositionChanged
void position_changed (framepos_t position);
/// slot for the signal session::TransportLooped
void transport_looped();
/// pulses per quarter note (default 24)
void set_ppqn(int ppqn) { _ppqn = ppqn; }
private:
MIDI::Port* _midi_port;
int _ppqn;
double _last_tick;
double one_ppqn_in_frames (framepos_t transport_position);
void send_midi_clock_event (pframes_t offset);
void send_start_event (pframes_t offset);
void send_continue_event (pframes_t offset);
void send_stop_event (pframes_t offset);
};
}
#endif /* TICKER_H_ */
|
