summaryrefslogtreecommitdiff
path: root/debian/include-alsa/alsa/seqmid.h
blob: e4759baf34747c70aae92615e83dccac049d7220 (plain)
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
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
/**
 * \file <alsa/seqmid.h>
 * \brief Application interface library for the ALSA driver
 * \author Jaroslav Kysela <perex@suse.cz>
 * \author Abramo Bagnara <abramo@alsa-project.org>
 * \author Takashi Iwai <tiwai@suse.de>
 * \date 1998-2001
 *
 * Application interface library for the ALSA driver
 *
 *
 *   This library is free software; you can redistribute it and/or modify
 *   it under the terms of the GNU Lesser General Public License as
 *   published by the Free Software Foundation; either version 2.1 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 Lesser General Public License for more details.
 *
 *   You should have received a copy of the GNU Lesser General Public
 *   License along with this library; if not, write to the Free Software
 *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
 *
 */

#ifndef __ALSA_SEQMID_H
#define __ALSA_SEQMID_H

#ifdef __cplusplus
extern "C" {
#endif

/**
 *  \defgroup SeqMiddle Sequencer Middle Level Interface
 *  Sequencer Middle Level Interface
 *  \ingroup Sequencer
 *  \{
 */

/**
 * \brief initialize event record
 * \param ev event record pointer
 * 
 * This macro clears the given event record pointer to the default status.
 */
#define snd_seq_ev_clear(ev) \
	memset(ev, 0, sizeof(snd_seq_event_t))

/**
 * \brief set the explicit destination
 * \param ev event record
 * \param c destination client id
 * \param p destination port id
 *
 * This macro sets the client and port id numbers to the given event record.
 *
 * \sa snd_seq_ev_set_subs()
 */
#define snd_seq_ev_set_dest(ev,c,p) \
	((ev)->dest.client = (c), (ev)->dest.port = (p))

/**
 * \brief set broadcasting to subscribers
 * \param ev event record
 *
 * This macro sets the destination as the subscribers.
 *
 * \sa snd_seq_ev_set_dest()
 */
#define snd_seq_ev_set_subs(ev) \
	((ev)->dest.client = SND_SEQ_ADDRESS_SUBSCRIBERS,\
	 (ev)->dest.port = SND_SEQ_ADDRESS_UNKNOWN)

/**
 * \brief set broadcasting to all clients/ports
 * \param ev event record
 *
 * This macro sets the destination as the broadcasting.
 *
 * \sa snd_seq_ev_set_dest()
 */
#define snd_seq_ev_set_broadcast(ev) \
	((ev)->dest.client = SND_SEQ_ADDRESS_BROADCAST,\
	 (ev)->dest.port = SND_SEQ_ADDRESS_BROADCAST)

/**
 * \brief set the source port
 * \param ev event record
 * \param p source port id
 *
 * This macro sets the source port id number.
 */
#define snd_seq_ev_set_source(ev,p) \
	((ev)->source.port = (p))

/**
 * \brief set direct passing mode (without queued)
 * \param ev event instance
 *
 * This macro sets the event to the direct passing mode
 * to be delivered immediately without queueing.
 * 
 * \sa snd_seq_ev_schedule_tick(), snd_seq_ev_schedule_real()
 */
#define snd_seq_ev_set_direct(ev) \
	((ev)->queue = SND_SEQ_QUEUE_DIRECT)

/**
 * \brief set tick-scheduling mode on queue
 * \param ev event instance
 * \param q queue id to schedule
 * \param relative relative time-stamp if non-zero
 * \param ttick tick time-stamp to be delivered
 *
 * This macro sets the scheduling of the event in the
 * MIDI tick mode.
 *
 * \sa snd_seq_ev_schedule_real(), snd_seq_ev_set_direct()
 */
#define snd_seq_ev_schedule_tick(ev, q, relative, ttick) \
	((ev)->flags &= ~(SND_SEQ_TIME_STAMP_MASK | SND_SEQ_TIME_MODE_MASK),\
	 (ev)->flags |= SND_SEQ_TIME_STAMP_TICK,\
	 (ev)->flags |= (relative) ? SND_SEQ_TIME_MODE_REL : SND_SEQ_TIME_MODE_ABS,\
	 (ev)->time.tick = (ttick),\
	 (ev)->queue = (q))

/**
 * \brief set real-time-scheduling mode on queue
 * \param ev event instance
 * \param q queue id to schedule
 * \param relative relative time-stamp if non-zero
 * \param rtime time-stamp to be delivered
 *
 * This macro sets the scheduling of the event in the
 * realtime mode.
 *
 * \sa snd_seq_ev_schedule_tick(), snd_seq_ev_set_direct()
 */
#define snd_seq_ev_schedule_real(ev, q, relative, rtime) \
	((ev)->flags &= ~(SND_SEQ_TIME_STAMP_MASK | SND_SEQ_TIME_MODE_MASK),\
	 (ev)->flags |= SND_SEQ_TIME_STAMP_REAL,\
	 (ev)->flags |= (relative) ? SND_SEQ_TIME_MODE_REL : SND_SEQ_TIME_MODE_ABS,\
	 (ev)->time.time = *(rtime),\
	 (ev)->queue = (q))

/**
 * \brief set event priority
 * \param ev event instance
 * \param high_prior 1 for high priority mode
 */
#define snd_seq_ev_set_priority(ev, high_prior) \
	((ev)->flags &= ~SND_SEQ_PRIORITY_MASK,\
	 (ev)->flags |= (high_prior) ? SND_SEQ_PRIORITY_HIGH : SND_SEQ_PRIORITY_NORMAL)

/**
 * \brief set fixed data
 * \param ev event instance
 *
 * Sets the event length mode as fixed size.
 *
 * \sa snd_seq_ev_set_variable(), snd_seq_ev_set_varusr()
 */
#define snd_seq_ev_set_fixed(ev) \
	((ev)->flags &= ~SND_SEQ_EVENT_LENGTH_MASK,\
	 (ev)->flags |= SND_SEQ_EVENT_LENGTH_FIXED)

/**
 * \brief set variable data
 * \param ev event instance
 * \param datalen length of the external data
 * \param dataptr pointer of the external data
 *
 * Sets the event length mode as variable length and stores the data.
 *
 * \sa snd_seq_ev_set_fixed(), snd_seq_ev_set_varusr()
 */
#define snd_seq_ev_set_variable(ev, datalen, dataptr) \
	((ev)->flags &= ~SND_SEQ_EVENT_LENGTH_MASK,\
	 (ev)->flags |= SND_SEQ_EVENT_LENGTH_VARIABLE,\
	 (ev)->data.ext.len = (datalen),\
	 (ev)->data.ext.ptr = (dataptr))

/**
 * \brief set varusr data
 * \param ev event instance
 * \param len length of the external data
 * \param ptr pointer of the external data
 *
 * Sets the event length mode as variable user-space data and stores the data.
 *
 * \sa snd_seq_ev_set_fixed(), snd_seq_ev_set_variable()
 */
#define snd_seq_ev_set_varusr(ev, datalen, dataptr) \
	((ev)->flags &= ~SND_SEQ_EVENT_LENGTH_MASK,\
	 (ev)->flags |= SND_SEQ_EVENT_LENGTH_VARUSR,\
	 (ev)->data.ext.len = (datalen),\
	 (ev)->data.ext.ptr = (dataptr))

/**
 * \brief set queue controls
 * \param ev event record
 * \param typ event type
 * \param q queue id
 * \param val control value
 */
#define snd_seq_ev_set_queue_control(ev, typ, q, val) \
	((ev)->type = (typ),\
	 snd_seq_ev_set_dest(ev, SND_SEQ_CLIENT_SYSTEM, SND_SEQ_PORT_SYSTEM_TIMER),\
	 (ev)->data.queue.queue = (q),\
	 (ev)->data.queue.param.value = (val))

/**
 * \brief set the start queue event
 * \param ev event record
 * \param q queue id to start
 *
 * \sa snd_seq_ev_set_queue_stop(), snd_seq_ev_set_queue_continue()
 */
#define snd_seq_ev_set_queue_start(ev, q) \
	snd_seq_ev_set_queue_control(ev, SND_SEQ_EVENT_START, q, 0)

/**
 * \brief set the stop queue event
 * \param ev event record
 * \param q queue id to stop
 *
 * \sa snd_seq_ev_set_queue_start(), snd_seq_ev_set_queue_continue()
 */
#define snd_seq_ev_set_queue_stop(ev, q) \
	snd_seq_ev_set_queue_control(ev, SND_SEQ_EVENT_STOP, q, 0)

/**
 * \brief set the stop queue event
 * \param ev event record
 * \param q queue id to continue
 *
 * \sa snd_seq_ev_set_queue_start(), snd_seq_ev_set_queue_stop()
 */
#define snd_seq_ev_set_queue_continue(ev, q) \
	snd_seq_ev_set_queue_control(ev, SND_SEQ_EVENT_CONTINUE, q, 0)

/**
 * \brief set the stop queue event
 * \param ev event record
 * \param q queue id to change tempo
 * \param val the new tempo value
 */
#define snd_seq_ev_set_queue_tempo(ev, q, val) \
	snd_seq_ev_set_queue_control(ev, SND_SEQ_EVENT_TEMPO, q, val)

/**
 * \brief set the real-time position of a queue
 * \param ev event record
 * \param q queue id to change tempo
 * \param rtime the new real-time pointer
 */
#define snd_seq_ev_set_queue_pos_real(ev, q, rtime) \
	((ev)->type = SND_SEQ_EVENT_SETPOS_TIME,\
	 snd_seq_ev_set_dest(ev, SND_SEQ_CLIENT_SYSTEM, SND_SEQ_PORT_SYSTEM_TIMER),\
	 (ev)->data.queue.queue = (q),\
	 (ev)->data.queue.param.time.time = *(rtime))

/**
 * \brief set the tick-time position of a queue
 * \param ev event record
 * \param q queue id to change tempo
 * \param ttime the new tick-time
 */
#define snd_seq_ev_set_queue_pos_tick(ev, q, ttime) \
	((ev)->type = SND_SEQ_EVENT_SETPOS_TICK,\
	 snd_seq_ev_set_dest(ev, SND_SEQ_CLIENT_SYSTEM, SND_SEQ_PORT_SYSTEM_TIMER),\
	 (ev)->data.queue.queue = (q),\
	 (ev)->data.queue.param.time.tick = (ttime))

/* set and send a queue control event */
int snd_seq_control_queue(snd_seq_t *seq, int q, int type, int value, snd_seq_event_t *ev);

/**
 * \brief start the specified queue
 * \param seq sequencer handle
 * \param q queue id to start
 * \param ev optional event record (see #snd_seq_control_queue)
 */
#define snd_seq_start_queue(seq, q, ev) \
	snd_seq_control_queue(seq, q, SND_SEQ_EVENT_START, 0, ev)

/**
 * \brief stop the specified queue
 * \param seq sequencer handle
 * \param q queue id to stop
 * \param ev optional event record (see #snd_seq_control_queue)
 */
#define snd_seq_stop_queue(seq, q, ev) \
	snd_seq_control_queue(seq, q, SND_SEQ_EVENT_STOP, 0, ev)

/**
 * \brief continue the specified queue
 * \param seq sequencer handle
 * \param q queue id to continue
 * \param ev optional event record (see #snd_seq_control_queue)
 */
#define snd_seq_continue_queue(seq, q, ev) \
	snd_seq_control_queue(seq, q, SND_SEQ_EVENT_CONTINUE, 0, ev)

/**
 * \brief change the tempo of the specified queue
 * \param seq sequencer handle
 * \param q queue id
 * \param tempo the new tempo value
 * \param ev optional event record (see #snd_seq_control_queue)
 */
#define snd_seq_change_queue_tempo(seq, q, tempo, ev) \
	snd_seq_control_queue(seq, q, SND_SEQ_EVENT_TEMPO, tempo, ev)

/* create a port - simple version - return the port number */
int snd_seq_create_simple_port(snd_seq_t *seq, const char *name,
			       unsigned int caps, unsigned int type);
/* delete the port */
int snd_seq_delete_simple_port(snd_seq_t *seq, int port);

/* simple subscription between this port and another port
   (w/o exclusive & time conversion)
   */
int snd_seq_connect_from(snd_seq_t *seq, int my_port, int src_client, int src_port);
int snd_seq_connect_to(snd_seq_t *seq, int my_port, int dest_client, int dest_port);
int snd_seq_disconnect_from(snd_seq_t *seq, int my_port, int src_client, int src_port);
int snd_seq_disconnect_to(snd_seq_t *seq, int my_port, int dest_client, int dest_port);

/*
 * set client information
 */
int snd_seq_set_client_name(snd_seq_t *seq, const char *name);
int snd_seq_set_client_event_filter(snd_seq_t *seq, int event_type);
int snd_seq_set_client_pool_output(snd_seq_t *seq, size_t size);
int snd_seq_set_client_pool_output_room(snd_seq_t *seq, size_t size);
int snd_seq_set_client_pool_input(snd_seq_t *seq, size_t size);
/* sync output queue */
int snd_seq_sync_output_queue(snd_seq_t *seq);

/*
 * parse the given string and get the sequencer address
 */
int snd_seq_parse_address(snd_seq_t *seq, snd_seq_addr_t *addr, const char *str);

/*
 * reset client input/output pool
 */
int snd_seq_reset_pool_output(snd_seq_t *seq);
int snd_seq_reset_pool_input(snd_seq_t *seq);

/**
 * \brief set note event
 * \param ev event record
 * \param ch channel number
 * \param key note key
 * \param vel velocity
 * \param dur duration (in tick or msec)
 */
#define snd_seq_ev_set_note(ev, ch, key, vel, dur) \
	((ev)->type = SND_SEQ_EVENT_NOTE,\
	 snd_seq_ev_set_fixed(ev),\
	 (ev)->data.note.channel = (ch),\
	 (ev)->data.note.note = (key),\
	 (ev)->data.note.velocity = (vel),\
	 (ev)->data.note.duration = (dur))

/**
 * \brief set note-on event
 * \param ev event record
 * \param ch channel number
 * \param key note key
 * \param vel velocity
 */
#define snd_seq_ev_set_noteon(ev, ch, key, vel) \
	((ev)->type = SND_SEQ_EVENT_NOTEON,\
	 snd_seq_ev_set_fixed(ev),\
	 (ev)->data.note.channel = (ch),\
	 (ev)->data.note.note = (key),\
	 (ev)->data.note.velocity = (vel))

/**
 * \brief set note-off event
 * \param ev event record
 * \param ch channel number
 * \param key note key
 * \param vel velocity
 */
#define snd_seq_ev_set_noteoff(ev, ch, key, vel) \
	((ev)->type = SND_SEQ_EVENT_NOTEOFF,\
	 snd_seq_ev_set_fixed(ev),\
	 (ev)->data.note.channel = (ch),\
	 (ev)->data.note.note = (key),\
	 (ev)->data.note.velocity = (vel))

/**
 * \brief set key-pressure event
 * \param ev event record
 * \param ch channel number
 * \param key note key
 * \param vel velocity
 */
#define snd_seq_ev_set_keypress(ev,ch,key,vel) \
	((ev)->type = SND_SEQ_EVENT_KEYPRESS,\
	 snd_seq_ev_set_fixed(ev),\
	 (ev)->data.note.channel = (ch),\
	 (ev)->data.note.note = (key),\
	 (ev)->data.note.velocity = (vel))

/**
 * \brief set MIDI controller event
 * \param ev event record
 * \param ch channel number
 * \param cc controller number
 * \param val control value
 */
#define snd_seq_ev_set_controller(ev,ch,cc,val) \
	((ev)->type = SND_SEQ_EVENT_CONTROLLER,\
	 snd_seq_ev_set_fixed(ev),\
	 (ev)->data.control.channel = (ch),\
	 (ev)->data.control.param = (cc),\
	 (ev)->data.control.value = (val))

/**
 * \brief set program change event
 * \param ev event record
 * \param ch channel number
 * \param val program number
 */
#define snd_seq_ev_set_pgmchange(ev,ch,val) \
	((ev)->type = SND_SEQ_EVENT_PGMCHANGE,\
	 snd_seq_ev_set_fixed(ev),\
	 (ev)->data.control.channel = (ch),\
	 (ev)->data.control.value = (val))

/**
 * \brief set pitch-bend event
 * \param ev event record
 * \param ch channel number
 * \param val pitch bend; zero centered from -8192 to 8191
 */
#define snd_seq_ev_set_pitchbend(ev,ch,val) \
	((ev)->type = SND_SEQ_EVENT_PITCHBEND,\
	 snd_seq_ev_set_fixed(ev),\
	 (ev)->data.control.channel = (ch),\
	 (ev)->data.control.value = (val))

/**
 * \brief set channel pressure event
 * \param ev event record
 * \param ch channel number
 * \param val channel pressure value
 */
#define snd_seq_ev_set_chanpress(ev,ch,val) \
	((ev)->type = SND_SEQ_EVENT_CHANPRESS,\
	 snd_seq_ev_set_fixed(ev),\
	 (ev)->data.control.channel = (ch),\
	 (ev)->data.control.value = (val))

/**
 * \brief set sysex event
 * \param ev event record
 * \param datalen length of sysex data
 * \param dataptr sysex data pointer
 *
 * the sysex data must contain the start byte 0xf0 and the end byte 0xf7.
 */
#define snd_seq_ev_set_sysex(ev,datalen,dataptr) \
	((ev)->type = SND_SEQ_EVENT_SYSEX,\
	 snd_seq_ev_set_variable(ev, datalen, dataptr))

/** \} */

#ifdef __cplusplus
}
#endif

#endif /* __ALSA_SEQMID_H */