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
|
/*
Copyright (C) 1998-2010 Paul Barton-Davis
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 __libardour_async_midiport_h__
#define __libardour_async_midiport_h__
#include <string>
#include <iostream>
#include "pbd/xml++.h"
#include "pbd/crossthread.h"
#include "pbd/signals.h"
#include "pbd/ringbuffer.h"
#include "evoral/Event.hpp"
#include "evoral/EventRingBuffer.hpp"
#include "midi++/types.h"
#include "midi++/parser.h"
#include "midi++/port.h"
#include "ardour/libardour_visibility.h"
#include "ardour/midi_port.h"
namespace ARDOUR {
class LIBARDOUR_API AsyncMIDIPort : public ARDOUR::MidiPort, public MIDI::Port {
public:
AsyncMIDIPort (std::string const &, PortFlags);
~AsyncMIDIPort ();
/* called from an RT context */
void cycle_start (pframes_t nframes);
void cycle_end (pframes_t nframes);
/* called from non-RT context */
void parse (framecnt_t timestamp);
int write (const MIDI::byte *msg, size_t msglen, MIDI::timestamp_t timestamp);
int read (MIDI::byte *buf, size_t bufsize);
void drain (int check_interval_usecs);
int selectable () const {
#ifdef PLATFORM_WINDOWS
return false;
#else
return xthread.selectable();
#endif
}
static void set_process_thread (pthread_t);
static pthread_t get_process_thread () { return _process_thread; }
static bool is_process_thread();
private:
bool _currently_in_cycle;
MIDI::timestamp_t _last_write_timestamp;
RingBuffer< Evoral::Event<double> > output_fifo;
Evoral::EventRingBuffer<MIDI::timestamp_t> input_fifo;
Glib::Threads::Mutex output_fifo_lock;
#ifndef PLATFORM_WINDOWS
CrossThreadChannel xthread;
#endif
int create_port ();
/** Channel used to signal to the MidiControlUI that input has arrived */
std::string _connections;
PBD::ScopedConnection connect_connection;
PBD::ScopedConnection halt_connection;
void flush (void* jack_port_buffer);
void jack_halted ();
void make_connections ();
void init (std::string const &, Flags);
void flush_output_fifo (pframes_t);
static pthread_t _process_thread;
};
} // namespace ARDOUR
#endif /* __libardour_async_midiport_h__ */
|