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1da177e4 LT |
1 | /* |
2 | * OSS compatible sequencer driver | |
3 | * | |
4 | * MIDI device handlers | |
5 | * | |
6 | * Copyright (C) 1998,99 Takashi Iwai <tiwai@suse.de> | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or modify | |
9 | * it under the terms of the GNU General Public License as published by | |
10 | * the Free Software Foundation; either version 2 of the License, or | |
11 | * (at your option) any later version. | |
12 | * | |
13 | * This program is distributed in the hope that it will be useful, | |
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | * GNU General Public License for more details. | |
17 | * | |
18 | * You should have received a copy of the GNU General Public License | |
19 | * along with this program; if not, write to the Free Software | |
20 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
21 | */ | |
22 | ||
23 | #include "seq_oss_midi.h" | |
24 | #include "seq_oss_readq.h" | |
25 | #include "seq_oss_timer.h" | |
26 | #include "seq_oss_event.h" | |
27 | #include <sound/seq_midi_event.h> | |
28 | #include "../seq_lock.h" | |
29 | #include <linux/init.h> | |
30 | ||
31 | ||
32 | /* | |
33 | * constants | |
34 | */ | |
35 | #define SNDRV_SEQ_OSS_MAX_MIDI_NAME 30 | |
36 | ||
37 | /* | |
38 | * definition of midi device record | |
39 | */ | |
40 | struct seq_oss_midi_t { | |
41 | int seq_device; /* device number */ | |
42 | int client; /* sequencer client number */ | |
43 | int port; /* sequencer port number */ | |
44 | unsigned int flags; /* port capability */ | |
45 | int opened; /* flag for opening */ | |
46 | unsigned char name[SNDRV_SEQ_OSS_MAX_MIDI_NAME]; | |
47 | snd_midi_event_t *coder; /* MIDI event coder */ | |
48 | seq_oss_devinfo_t *devinfo; /* assigned OSSseq device */ | |
49 | snd_use_lock_t use_lock; | |
50 | }; | |
51 | ||
52 | ||
53 | /* | |
54 | * midi device table | |
55 | */ | |
56 | static int max_midi_devs; | |
57 | static seq_oss_midi_t *midi_devs[SNDRV_SEQ_OSS_MAX_MIDI_DEVS]; | |
58 | ||
59 | static DEFINE_SPINLOCK(register_lock); | |
60 | ||
61 | /* | |
62 | * prototypes | |
63 | */ | |
64 | static seq_oss_midi_t *get_mdev(int dev); | |
65 | static seq_oss_midi_t *get_mididev(seq_oss_devinfo_t *dp, int dev); | |
66 | static int send_synth_event(seq_oss_devinfo_t *dp, snd_seq_event_t *ev, int dev); | |
67 | static int send_midi_event(seq_oss_devinfo_t *dp, snd_seq_event_t *ev, seq_oss_midi_t *mdev); | |
68 | ||
69 | /* | |
70 | * look up the existing ports | |
71 | * this looks a very exhausting job. | |
72 | */ | |
73 | int __init | |
74 | snd_seq_oss_midi_lookup_ports(int client) | |
75 | { | |
76 | snd_seq_client_info_t *clinfo; | |
77 | snd_seq_port_info_t *pinfo; | |
78 | ||
79 | clinfo = kcalloc(1, sizeof(*clinfo), GFP_KERNEL); | |
80 | pinfo = kcalloc(1, sizeof(*pinfo), GFP_KERNEL); | |
81 | if (! clinfo || ! pinfo) { | |
82 | kfree(clinfo); | |
83 | kfree(pinfo); | |
84 | return -ENOMEM; | |
85 | } | |
86 | clinfo->client = -1; | |
87 | while (snd_seq_kernel_client_ctl(client, SNDRV_SEQ_IOCTL_QUERY_NEXT_CLIENT, clinfo) == 0) { | |
88 | if (clinfo->client == client) | |
89 | continue; /* ignore myself */ | |
90 | pinfo->addr.client = clinfo->client; | |
91 | pinfo->addr.port = -1; | |
92 | while (snd_seq_kernel_client_ctl(client, SNDRV_SEQ_IOCTL_QUERY_NEXT_PORT, pinfo) == 0) | |
93 | snd_seq_oss_midi_check_new_port(pinfo); | |
94 | } | |
95 | kfree(clinfo); | |
96 | kfree(pinfo); | |
97 | return 0; | |
98 | } | |
99 | ||
100 | ||
101 | /* | |
102 | */ | |
103 | static seq_oss_midi_t * | |
104 | get_mdev(int dev) | |
105 | { | |
106 | seq_oss_midi_t *mdev; | |
107 | unsigned long flags; | |
108 | ||
109 | spin_lock_irqsave(®ister_lock, flags); | |
110 | mdev = midi_devs[dev]; | |
111 | if (mdev) | |
112 | snd_use_lock_use(&mdev->use_lock); | |
113 | spin_unlock_irqrestore(®ister_lock, flags); | |
114 | return mdev; | |
115 | } | |
116 | ||
117 | /* | |
118 | * look for the identical slot | |
119 | */ | |
120 | static seq_oss_midi_t * | |
121 | find_slot(int client, int port) | |
122 | { | |
123 | int i; | |
124 | seq_oss_midi_t *mdev; | |
125 | unsigned long flags; | |
126 | ||
127 | spin_lock_irqsave(®ister_lock, flags); | |
128 | for (i = 0; i < max_midi_devs; i++) { | |
129 | mdev = midi_devs[i]; | |
130 | if (mdev && mdev->client == client && mdev->port == port) { | |
131 | /* found! */ | |
132 | snd_use_lock_use(&mdev->use_lock); | |
133 | spin_unlock_irqrestore(®ister_lock, flags); | |
134 | return mdev; | |
135 | } | |
136 | } | |
137 | spin_unlock_irqrestore(®ister_lock, flags); | |
138 | return NULL; | |
139 | } | |
140 | ||
141 | ||
142 | #define PERM_WRITE (SNDRV_SEQ_PORT_CAP_WRITE|SNDRV_SEQ_PORT_CAP_SUBS_WRITE) | |
143 | #define PERM_READ (SNDRV_SEQ_PORT_CAP_READ|SNDRV_SEQ_PORT_CAP_SUBS_READ) | |
144 | /* | |
145 | * register a new port if it doesn't exist yet | |
146 | */ | |
147 | int | |
148 | snd_seq_oss_midi_check_new_port(snd_seq_port_info_t *pinfo) | |
149 | { | |
150 | int i; | |
151 | seq_oss_midi_t *mdev; | |
152 | unsigned long flags; | |
153 | ||
154 | debug_printk(("check for MIDI client %d port %d\n", pinfo->addr.client, pinfo->addr.port)); | |
155 | /* the port must include generic midi */ | |
156 | if (! (pinfo->type & SNDRV_SEQ_PORT_TYPE_MIDI_GENERIC)) | |
157 | return 0; | |
158 | /* either read or write subscribable */ | |
159 | if ((pinfo->capability & PERM_WRITE) != PERM_WRITE && | |
160 | (pinfo->capability & PERM_READ) != PERM_READ) | |
161 | return 0; | |
162 | ||
163 | /* | |
164 | * look for the identical slot | |
165 | */ | |
166 | if ((mdev = find_slot(pinfo->addr.client, pinfo->addr.port)) != NULL) { | |
167 | /* already exists */ | |
168 | snd_use_lock_free(&mdev->use_lock); | |
169 | return 0; | |
170 | } | |
171 | ||
172 | /* | |
173 | * allocate midi info record | |
174 | */ | |
175 | if ((mdev = kcalloc(1, sizeof(*mdev), GFP_KERNEL)) == NULL) { | |
176 | snd_printk(KERN_ERR "can't malloc midi info\n"); | |
177 | return -ENOMEM; | |
178 | } | |
179 | ||
180 | /* copy the port information */ | |
181 | mdev->client = pinfo->addr.client; | |
182 | mdev->port = pinfo->addr.port; | |
183 | mdev->flags = pinfo->capability; | |
184 | mdev->opened = 0; | |
185 | snd_use_lock_init(&mdev->use_lock); | |
186 | ||
187 | /* copy and truncate the name of synth device */ | |
188 | strlcpy(mdev->name, pinfo->name, sizeof(mdev->name)); | |
189 | ||
190 | /* create MIDI coder */ | |
191 | if (snd_midi_event_new(MAX_MIDI_EVENT_BUF, &mdev->coder) < 0) { | |
192 | snd_printk(KERN_ERR "can't malloc midi coder\n"); | |
193 | kfree(mdev); | |
194 | return -ENOMEM; | |
195 | } | |
196 | /* OSS sequencer adds running status to all sequences */ | |
197 | snd_midi_event_no_status(mdev->coder, 1); | |
198 | ||
199 | /* | |
200 | * look for en empty slot | |
201 | */ | |
202 | spin_lock_irqsave(®ister_lock, flags); | |
203 | for (i = 0; i < max_midi_devs; i++) { | |
204 | if (midi_devs[i] == NULL) | |
205 | break; | |
206 | } | |
207 | if (i >= max_midi_devs) { | |
208 | if (max_midi_devs >= SNDRV_SEQ_OSS_MAX_MIDI_DEVS) { | |
209 | spin_unlock_irqrestore(®ister_lock, flags); | |
210 | snd_midi_event_free(mdev->coder); | |
211 | kfree(mdev); | |
212 | return -ENOMEM; | |
213 | } | |
214 | max_midi_devs++; | |
215 | } | |
216 | mdev->seq_device = i; | |
217 | midi_devs[mdev->seq_device] = mdev; | |
218 | spin_unlock_irqrestore(®ister_lock, flags); | |
219 | ||
220 | return 0; | |
221 | } | |
222 | ||
223 | /* | |
224 | * release the midi device if it was registered | |
225 | */ | |
226 | int | |
227 | snd_seq_oss_midi_check_exit_port(int client, int port) | |
228 | { | |
229 | seq_oss_midi_t *mdev; | |
230 | unsigned long flags; | |
231 | int index; | |
232 | ||
233 | if ((mdev = find_slot(client, port)) != NULL) { | |
234 | spin_lock_irqsave(®ister_lock, flags); | |
235 | midi_devs[mdev->seq_device] = NULL; | |
236 | spin_unlock_irqrestore(®ister_lock, flags); | |
237 | snd_use_lock_free(&mdev->use_lock); | |
238 | snd_use_lock_sync(&mdev->use_lock); | |
239 | if (mdev->coder) | |
240 | snd_midi_event_free(mdev->coder); | |
241 | kfree(mdev); | |
242 | } | |
243 | spin_lock_irqsave(®ister_lock, flags); | |
244 | for (index = max_midi_devs - 1; index >= 0; index--) { | |
245 | if (midi_devs[index]) | |
246 | break; | |
247 | } | |
248 | max_midi_devs = index + 1; | |
249 | spin_unlock_irqrestore(®ister_lock, flags); | |
250 | return 0; | |
251 | } | |
252 | ||
253 | ||
254 | /* | |
255 | * release the midi device if it was registered | |
256 | */ | |
257 | void | |
258 | snd_seq_oss_midi_clear_all(void) | |
259 | { | |
260 | int i; | |
261 | seq_oss_midi_t *mdev; | |
262 | unsigned long flags; | |
263 | ||
264 | spin_lock_irqsave(®ister_lock, flags); | |
265 | for (i = 0; i < max_midi_devs; i++) { | |
266 | if ((mdev = midi_devs[i]) != NULL) { | |
267 | if (mdev->coder) | |
268 | snd_midi_event_free(mdev->coder); | |
269 | kfree(mdev); | |
270 | midi_devs[i] = NULL; | |
271 | } | |
272 | } | |
273 | max_midi_devs = 0; | |
274 | spin_unlock_irqrestore(®ister_lock, flags); | |
275 | } | |
276 | ||
277 | ||
278 | /* | |
279 | * set up midi tables | |
280 | */ | |
281 | void | |
282 | snd_seq_oss_midi_setup(seq_oss_devinfo_t *dp) | |
283 | { | |
284 | dp->max_mididev = max_midi_devs; | |
285 | } | |
286 | ||
287 | /* | |
288 | * clean up midi tables | |
289 | */ | |
290 | void | |
291 | snd_seq_oss_midi_cleanup(seq_oss_devinfo_t *dp) | |
292 | { | |
293 | int i; | |
294 | for (i = 0; i < dp->max_mididev; i++) | |
295 | snd_seq_oss_midi_close(dp, i); | |
296 | dp->max_mididev = 0; | |
297 | } | |
298 | ||
299 | ||
300 | /* | |
301 | * open all midi devices. ignore errors. | |
302 | */ | |
303 | void | |
304 | snd_seq_oss_midi_open_all(seq_oss_devinfo_t *dp, int file_mode) | |
305 | { | |
306 | int i; | |
307 | for (i = 0; i < dp->max_mididev; i++) | |
308 | snd_seq_oss_midi_open(dp, i, file_mode); | |
309 | } | |
310 | ||
311 | ||
312 | /* | |
313 | * get the midi device information | |
314 | */ | |
315 | static seq_oss_midi_t * | |
316 | get_mididev(seq_oss_devinfo_t *dp, int dev) | |
317 | { | |
318 | if (dev < 0 || dev >= dp->max_mididev) | |
319 | return NULL; | |
320 | return get_mdev(dev); | |
321 | } | |
322 | ||
323 | ||
324 | /* | |
325 | * open the midi device if not opened yet | |
326 | */ | |
327 | int | |
328 | snd_seq_oss_midi_open(seq_oss_devinfo_t *dp, int dev, int fmode) | |
329 | { | |
330 | int perm; | |
331 | seq_oss_midi_t *mdev; | |
332 | snd_seq_port_subscribe_t subs; | |
333 | ||
334 | if ((mdev = get_mididev(dp, dev)) == NULL) | |
335 | return -ENODEV; | |
336 | ||
337 | /* already used? */ | |
338 | if (mdev->opened && mdev->devinfo != dp) { | |
339 | snd_use_lock_free(&mdev->use_lock); | |
340 | return -EBUSY; | |
341 | } | |
342 | ||
343 | perm = 0; | |
344 | if (is_write_mode(fmode)) | |
345 | perm |= PERM_WRITE; | |
346 | if (is_read_mode(fmode)) | |
347 | perm |= PERM_READ; | |
348 | perm &= mdev->flags; | |
349 | if (perm == 0) { | |
350 | snd_use_lock_free(&mdev->use_lock); | |
351 | return -ENXIO; | |
352 | } | |
353 | ||
354 | /* already opened? */ | |
355 | if ((mdev->opened & perm) == perm) { | |
356 | snd_use_lock_free(&mdev->use_lock); | |
357 | return 0; | |
358 | } | |
359 | ||
360 | perm &= ~mdev->opened; | |
361 | ||
362 | memset(&subs, 0, sizeof(subs)); | |
363 | ||
364 | if (perm & PERM_WRITE) { | |
365 | subs.sender = dp->addr; | |
366 | subs.dest.client = mdev->client; | |
367 | subs.dest.port = mdev->port; | |
368 | if (snd_seq_kernel_client_ctl(dp->cseq, SNDRV_SEQ_IOCTL_SUBSCRIBE_PORT, &subs) >= 0) | |
369 | mdev->opened |= PERM_WRITE; | |
370 | } | |
371 | if (perm & PERM_READ) { | |
372 | subs.sender.client = mdev->client; | |
373 | subs.sender.port = mdev->port; | |
374 | subs.dest = dp->addr; | |
375 | subs.flags = SNDRV_SEQ_PORT_SUBS_TIMESTAMP; | |
376 | subs.queue = dp->queue; /* queue for timestamps */ | |
377 | if (snd_seq_kernel_client_ctl(dp->cseq, SNDRV_SEQ_IOCTL_SUBSCRIBE_PORT, &subs) >= 0) | |
378 | mdev->opened |= PERM_READ; | |
379 | } | |
380 | ||
381 | if (! mdev->opened) { | |
382 | snd_use_lock_free(&mdev->use_lock); | |
383 | return -ENXIO; | |
384 | } | |
385 | ||
386 | mdev->devinfo = dp; | |
387 | snd_use_lock_free(&mdev->use_lock); | |
388 | return 0; | |
389 | } | |
390 | ||
391 | /* | |
392 | * close the midi device if already opened | |
393 | */ | |
394 | int | |
395 | snd_seq_oss_midi_close(seq_oss_devinfo_t *dp, int dev) | |
396 | { | |
397 | seq_oss_midi_t *mdev; | |
398 | snd_seq_port_subscribe_t subs; | |
399 | ||
400 | if ((mdev = get_mididev(dp, dev)) == NULL) | |
401 | return -ENODEV; | |
402 | if (! mdev->opened || mdev->devinfo != dp) { | |
403 | snd_use_lock_free(&mdev->use_lock); | |
404 | return 0; | |
405 | } | |
406 | ||
407 | debug_printk(("closing client %d port %d mode %d\n", mdev->client, mdev->port, mdev->opened)); | |
408 | memset(&subs, 0, sizeof(subs)); | |
409 | if (mdev->opened & PERM_WRITE) { | |
410 | subs.sender = dp->addr; | |
411 | subs.dest.client = mdev->client; | |
412 | subs.dest.port = mdev->port; | |
413 | snd_seq_kernel_client_ctl(dp->cseq, SNDRV_SEQ_IOCTL_UNSUBSCRIBE_PORT, &subs); | |
414 | } | |
415 | if (mdev->opened & PERM_READ) { | |
416 | subs.sender.client = mdev->client; | |
417 | subs.sender.port = mdev->port; | |
418 | subs.dest = dp->addr; | |
419 | snd_seq_kernel_client_ctl(dp->cseq, SNDRV_SEQ_IOCTL_UNSUBSCRIBE_PORT, &subs); | |
420 | } | |
421 | ||
422 | mdev->opened = 0; | |
423 | mdev->devinfo = NULL; | |
424 | ||
425 | snd_use_lock_free(&mdev->use_lock); | |
426 | return 0; | |
427 | } | |
428 | ||
429 | /* | |
430 | * change seq capability flags to file mode flags | |
431 | */ | |
432 | int | |
433 | snd_seq_oss_midi_filemode(seq_oss_devinfo_t *dp, int dev) | |
434 | { | |
435 | seq_oss_midi_t *mdev; | |
436 | int mode; | |
437 | ||
438 | if ((mdev = get_mididev(dp, dev)) == NULL) | |
439 | return 0; | |
440 | ||
441 | mode = 0; | |
442 | if (mdev->opened & PERM_WRITE) | |
443 | mode |= SNDRV_SEQ_OSS_FILE_WRITE; | |
444 | if (mdev->opened & PERM_READ) | |
445 | mode |= SNDRV_SEQ_OSS_FILE_READ; | |
446 | ||
447 | snd_use_lock_free(&mdev->use_lock); | |
448 | return mode; | |
449 | } | |
450 | ||
451 | /* | |
452 | * reset the midi device and close it: | |
453 | * so far, only close the device. | |
454 | */ | |
455 | void | |
456 | snd_seq_oss_midi_reset(seq_oss_devinfo_t *dp, int dev) | |
457 | { | |
458 | seq_oss_midi_t *mdev; | |
459 | ||
460 | if ((mdev = get_mididev(dp, dev)) == NULL) | |
461 | return; | |
462 | if (! mdev->opened) { | |
463 | snd_use_lock_free(&mdev->use_lock); | |
464 | return; | |
465 | } | |
466 | ||
467 | if (mdev->opened & PERM_WRITE) { | |
468 | snd_seq_event_t ev; | |
469 | int c; | |
470 | ||
471 | debug_printk(("resetting client %d port %d\n", mdev->client, mdev->port)); | |
472 | memset(&ev, 0, sizeof(ev)); | |
473 | ev.dest.client = mdev->client; | |
474 | ev.dest.port = mdev->port; | |
475 | ev.queue = dp->queue; | |
476 | ev.source.port = dp->port; | |
477 | if (dp->seq_mode == SNDRV_SEQ_OSS_MODE_SYNTH) { | |
478 | ev.type = SNDRV_SEQ_EVENT_SENSING; | |
479 | snd_seq_oss_dispatch(dp, &ev, 0, 0); /* active sensing */ | |
480 | } | |
481 | for (c = 0; c < 16; c++) { | |
482 | ev.type = SNDRV_SEQ_EVENT_CONTROLLER; | |
483 | ev.data.control.channel = c; | |
484 | ev.data.control.param = 123; | |
485 | snd_seq_oss_dispatch(dp, &ev, 0, 0); /* all notes off */ | |
486 | if (dp->seq_mode == SNDRV_SEQ_OSS_MODE_MUSIC) { | |
487 | ev.data.control.param = 121; | |
488 | snd_seq_oss_dispatch(dp, &ev, 0, 0); /* reset all controllers */ | |
489 | ev.type = SNDRV_SEQ_EVENT_PITCHBEND; | |
490 | ev.data.control.value = 0; | |
491 | snd_seq_oss_dispatch(dp, &ev, 0, 0); /* bender off */ | |
492 | } | |
493 | } | |
494 | } | |
495 | // snd_seq_oss_midi_close(dp, dev); | |
496 | snd_use_lock_free(&mdev->use_lock); | |
497 | } | |
498 | ||
499 | ||
500 | /* | |
501 | * get client/port of the specified MIDI device | |
502 | */ | |
503 | void | |
504 | snd_seq_oss_midi_get_addr(seq_oss_devinfo_t *dp, int dev, snd_seq_addr_t *addr) | |
505 | { | |
506 | seq_oss_midi_t *mdev; | |
507 | ||
508 | if ((mdev = get_mididev(dp, dev)) == NULL) | |
509 | return; | |
510 | addr->client = mdev->client; | |
511 | addr->port = mdev->port; | |
512 | snd_use_lock_free(&mdev->use_lock); | |
513 | } | |
514 | ||
515 | ||
516 | /* | |
517 | * input callback - this can be atomic | |
518 | */ | |
519 | int | |
520 | snd_seq_oss_midi_input(snd_seq_event_t *ev, int direct, void *private_data) | |
521 | { | |
522 | seq_oss_devinfo_t *dp = (seq_oss_devinfo_t *)private_data; | |
523 | seq_oss_midi_t *mdev; | |
524 | int rc; | |
525 | ||
526 | if (dp->readq == NULL) | |
527 | return 0; | |
528 | if ((mdev = find_slot(ev->source.client, ev->source.port)) == NULL) | |
529 | return 0; | |
530 | if (! (mdev->opened & PERM_READ)) { | |
531 | snd_use_lock_free(&mdev->use_lock); | |
532 | return 0; | |
533 | } | |
534 | ||
535 | if (dp->seq_mode == SNDRV_SEQ_OSS_MODE_MUSIC) | |
536 | rc = send_synth_event(dp, ev, mdev->seq_device); | |
537 | else | |
538 | rc = send_midi_event(dp, ev, mdev); | |
539 | ||
540 | snd_use_lock_free(&mdev->use_lock); | |
541 | return rc; | |
542 | } | |
543 | ||
544 | /* | |
545 | * convert ALSA sequencer event to OSS synth event | |
546 | */ | |
547 | static int | |
548 | send_synth_event(seq_oss_devinfo_t *dp, snd_seq_event_t *ev, int dev) | |
549 | { | |
550 | evrec_t ossev; | |
551 | ||
552 | memset(&ossev, 0, sizeof(ossev)); | |
553 | ||
554 | switch (ev->type) { | |
555 | case SNDRV_SEQ_EVENT_NOTEON: | |
556 | ossev.v.cmd = MIDI_NOTEON; break; | |
557 | case SNDRV_SEQ_EVENT_NOTEOFF: | |
558 | ossev.v.cmd = MIDI_NOTEOFF; break; | |
559 | case SNDRV_SEQ_EVENT_KEYPRESS: | |
560 | ossev.v.cmd = MIDI_KEY_PRESSURE; break; | |
561 | case SNDRV_SEQ_EVENT_CONTROLLER: | |
562 | ossev.l.cmd = MIDI_CTL_CHANGE; break; | |
563 | case SNDRV_SEQ_EVENT_PGMCHANGE: | |
564 | ossev.l.cmd = MIDI_PGM_CHANGE; break; | |
565 | case SNDRV_SEQ_EVENT_CHANPRESS: | |
566 | ossev.l.cmd = MIDI_CHN_PRESSURE; break; | |
567 | case SNDRV_SEQ_EVENT_PITCHBEND: | |
568 | ossev.l.cmd = MIDI_PITCH_BEND; break; | |
569 | default: | |
570 | return 0; /* not supported */ | |
571 | } | |
572 | ||
573 | ossev.v.dev = dev; | |
574 | ||
575 | switch (ev->type) { | |
576 | case SNDRV_SEQ_EVENT_NOTEON: | |
577 | case SNDRV_SEQ_EVENT_NOTEOFF: | |
578 | case SNDRV_SEQ_EVENT_KEYPRESS: | |
579 | ossev.v.code = EV_CHN_VOICE; | |
580 | ossev.v.note = ev->data.note.note; | |
581 | ossev.v.parm = ev->data.note.velocity; | |
582 | ossev.v.chn = ev->data.note.channel; | |
583 | break; | |
584 | case SNDRV_SEQ_EVENT_CONTROLLER: | |
585 | case SNDRV_SEQ_EVENT_PGMCHANGE: | |
586 | case SNDRV_SEQ_EVENT_CHANPRESS: | |
587 | ossev.l.code = EV_CHN_COMMON; | |
588 | ossev.l.p1 = ev->data.control.param; | |
589 | ossev.l.val = ev->data.control.value; | |
590 | ossev.l.chn = ev->data.control.channel; | |
591 | break; | |
592 | case SNDRV_SEQ_EVENT_PITCHBEND: | |
593 | ossev.l.code = EV_CHN_COMMON; | |
594 | ossev.l.val = ev->data.control.value + 8192; | |
595 | ossev.l.chn = ev->data.control.channel; | |
596 | break; | |
597 | } | |
598 | ||
599 | snd_seq_oss_readq_put_timestamp(dp->readq, ev->time.tick, dp->seq_mode); | |
600 | snd_seq_oss_readq_put_event(dp->readq, &ossev); | |
601 | ||
602 | return 0; | |
603 | } | |
604 | ||
605 | /* | |
606 | * decode event and send MIDI bytes to read queue | |
607 | */ | |
608 | static int | |
609 | send_midi_event(seq_oss_devinfo_t *dp, snd_seq_event_t *ev, seq_oss_midi_t *mdev) | |
610 | { | |
611 | char msg[32]; | |
612 | int len; | |
613 | ||
614 | snd_seq_oss_readq_put_timestamp(dp->readq, ev->time.tick, dp->seq_mode); | |
615 | if (!dp->timer->running) | |
616 | len = snd_seq_oss_timer_start(dp->timer); | |
617 | if (ev->type == SNDRV_SEQ_EVENT_SYSEX) { | |
618 | if ((ev->flags & SNDRV_SEQ_EVENT_LENGTH_MASK) == SNDRV_SEQ_EVENT_LENGTH_VARIABLE) | |
619 | snd_seq_oss_readq_puts(dp->readq, mdev->seq_device, | |
620 | ev->data.ext.ptr, ev->data.ext.len); | |
621 | } else { | |
622 | len = snd_midi_event_decode(mdev->coder, msg, sizeof(msg), ev); | |
623 | if (len > 0) | |
624 | snd_seq_oss_readq_puts(dp->readq, mdev->seq_device, msg, len); | |
625 | } | |
626 | ||
627 | return 0; | |
628 | } | |
629 | ||
630 | ||
631 | /* | |
632 | * dump midi data | |
633 | * return 0 : enqueued | |
634 | * non-zero : invalid - ignored | |
635 | */ | |
636 | int | |
637 | snd_seq_oss_midi_putc(seq_oss_devinfo_t *dp, int dev, unsigned char c, snd_seq_event_t *ev) | |
638 | { | |
639 | seq_oss_midi_t *mdev; | |
640 | ||
641 | if ((mdev = get_mididev(dp, dev)) == NULL) | |
642 | return -ENODEV; | |
643 | if (snd_midi_event_encode_byte(mdev->coder, c, ev) > 0) { | |
644 | snd_seq_oss_fill_addr(dp, ev, mdev->client, mdev->port); | |
645 | snd_use_lock_free(&mdev->use_lock); | |
646 | return 0; | |
647 | } | |
648 | snd_use_lock_free(&mdev->use_lock); | |
649 | return -EINVAL; | |
650 | } | |
651 | ||
652 | /* | |
653 | * create OSS compatible midi_info record | |
654 | */ | |
655 | int | |
656 | snd_seq_oss_midi_make_info(seq_oss_devinfo_t *dp, int dev, struct midi_info *inf) | |
657 | { | |
658 | seq_oss_midi_t *mdev; | |
659 | ||
660 | if ((mdev = get_mididev(dp, dev)) == NULL) | |
661 | return -ENXIO; | |
662 | inf->device = dev; | |
663 | inf->dev_type = 0; /* FIXME: ?? */ | |
664 | inf->capabilities = 0; /* FIXME: ?? */ | |
665 | strlcpy(inf->name, mdev->name, sizeof(inf->name)); | |
666 | snd_use_lock_free(&mdev->use_lock); | |
667 | return 0; | |
668 | } | |
669 | ||
670 | ||
671 | /* | |
672 | * proc interface | |
673 | */ | |
674 | static char * | |
675 | capmode_str(int val) | |
676 | { | |
677 | val &= PERM_READ|PERM_WRITE; | |
678 | if (val == (PERM_READ|PERM_WRITE)) | |
679 | return "read/write"; | |
680 | else if (val == PERM_READ) | |
681 | return "read"; | |
682 | else if (val == PERM_WRITE) | |
683 | return "write"; | |
684 | else | |
685 | return "none"; | |
686 | } | |
687 | ||
688 | void | |
689 | snd_seq_oss_midi_info_read(snd_info_buffer_t *buf) | |
690 | { | |
691 | int i; | |
692 | seq_oss_midi_t *mdev; | |
693 | ||
694 | snd_iprintf(buf, "\nNumber of MIDI devices: %d\n", max_midi_devs); | |
695 | for (i = 0; i < max_midi_devs; i++) { | |
696 | snd_iprintf(buf, "\nmidi %d: ", i); | |
697 | mdev = get_mdev(i); | |
698 | if (mdev == NULL) { | |
699 | snd_iprintf(buf, "*empty*\n"); | |
700 | continue; | |
701 | } | |
702 | snd_iprintf(buf, "[%s] ALSA port %d:%d\n", mdev->name, | |
703 | mdev->client, mdev->port); | |
704 | snd_iprintf(buf, " capability %s / opened %s\n", | |
705 | capmode_str(mdev->flags), | |
706 | capmode_str(mdev->opened)); | |
707 | snd_use_lock_free(&mdev->use_lock); | |
708 | } | |
709 | } | |
710 |