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
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
|
/* -*- Mode: C ; c-basic-offset: 2 -*- */
/*
* ALSA SEQ < - > JACK MIDI bridge
*
* Copyright (c) 2006,2007 Dmitry S. Baikov <c0ff@konstruktiv.org>
* Copyright (c) 2007,2008,2009 Nedko Arnaudov <nedko@arnaudov.name>
*
* 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; version 2 of the License.
*
* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef STRUCTS_H__FD2CC895_411F_4ADE_9200_50FE395EDB72__INCLUDED
#define STRUCTS_H__FD2CC895_411F_4ADE_9200_50FE395EDB72__INCLUDED
#include <semaphore.h>
#include <jack/midiport.h>
#define JACK_INVALID_PORT NULL
#define MAX_PORTS 2048
#define MAX_EVENT_SIZE 1024
#define PORT_HASH_BITS 4
#define PORT_HASH_SIZE (1 << PORT_HASH_BITS)
typedef struct a2j_port * a2j_port_hash_t[PORT_HASH_SIZE];
struct a2j;
struct a2j_port
{
struct a2j_port * next; /* hash - jack */
struct list_head siblings; /* list - main loop */
struct a2j * a2j_ptr;
bool is_dead;
snd_seq_addr_t remote;
jack_port_t * jack_port;
jack_ringbuffer_t * inbound_events; // alsa_midi_event_t + data
int64_t last_out_time;
void * jack_buf;
char name[0];
};
struct a2j_stream
{
snd_midi_event_t *codec;
jack_ringbuffer_t *new_ports;
a2j_port_hash_t port_hash;
struct list_head list;
};
struct a2j
{
jack_client_t * jack_client;
snd_seq_t *seq;
pthread_t alsa_input_thread;
pthread_t alsa_output_thread;
int client_id;
int port_id;
int queue;
jack_ringbuffer_t *port_add; // snd_seq_addr_t
jack_ringbuffer_t *port_del; // struct a2j_port*
jack_ringbuffer_t * outbound_events; // struct a2j_delivery_event
jack_nframes_t cycle_start;
sem_t io_semaphore;
struct a2j_stream stream[2];
};
#define NSEC_PER_SEC ((int64_t)1000*1000*1000)
struct a2j_process_info
{
int dir;
jack_nframes_t nframes;
jack_nframes_t period_start;
jack_nframes_t sample_rate;
jack_nframes_t cur_frames;
int64_t alsa_time;
};
struct a2j_alsa_midi_event
{
int64_t time;
int size;
};
#define MAX_JACKMIDI_EV_SIZE 16
struct a2j_delivery_event
{
struct list_head siblings;
/* a jack MIDI event, plus the port its destined for: everything
the ALSA output thread needs to deliver the event. time is
part of the jack_event.
*/
jack_midi_event_t jack_event;
jack_nframes_t time; /* realtime, not offset time */
struct a2j_port* port;
char midistring[MAX_JACKMIDI_EV_SIZE];
};
/* Beside enum use, these are indeces for (struct a2j).stream array */
#define A2J_PORT_CAPTURE 0 // ALSA playback port -> JACK capture port
#define A2J_PORT_PLAYBACK 1 // JACK playback port -> ALSA capture port
extern struct a2j * g_a2j;
extern size_t g_max_jack_port_name_size;
#endif /* #ifndef STRUCTS_H__FD2CC895_411F_4ADE_9200_50FE395EDB72__INCLUDED */
|
