Commit | Line | Data |
---|---|---|
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 | ||
08d03340 | 23 | #include <sound/asoundef.h> |
1da177e4 LT |
24 | #include "seq_oss_midi.h" |
25 | #include "seq_oss_readq.h" | |
26 | #include "seq_oss_timer.h" | |
27 | #include "seq_oss_event.h" | |
28 | #include <sound/seq_midi_event.h> | |
29 | #include "../seq_lock.h" | |
30 | #include <linux/init.h> | |
5a0e3ad6 | 31 | #include <linux/slab.h> |
1da177e4 LT |
32 | |
33 | ||
34 | /* | |
35 | * constants | |
36 | */ | |
37 | #define SNDRV_SEQ_OSS_MAX_MIDI_NAME 30 | |
38 | ||
39 | /* | |
40 | * definition of midi device record | |
41 | */ | |
080dece3 | 42 | struct seq_oss_midi { |
1da177e4 LT |
43 | int seq_device; /* device number */ |
44 | int client; /* sequencer client number */ | |
45 | int port; /* sequencer port number */ | |
46 | unsigned int flags; /* port capability */ | |
47 | int opened; /* flag for opening */ | |
48 | unsigned char name[SNDRV_SEQ_OSS_MAX_MIDI_NAME]; | |
080dece3 TI |
49 | struct snd_midi_event *coder; /* MIDI event coder */ |
50 | struct seq_oss_devinfo *devinfo; /* assigned OSSseq device */ | |
1da177e4 LT |
51 | snd_use_lock_t use_lock; |
52 | }; | |
53 | ||
54 | ||
55 | /* | |
56 | * midi device table | |
57 | */ | |
58 | static int max_midi_devs; | |
080dece3 | 59 | static struct seq_oss_midi *midi_devs[SNDRV_SEQ_OSS_MAX_MIDI_DEVS]; |
1da177e4 LT |
60 | |
61 | static DEFINE_SPINLOCK(register_lock); | |
62 | ||
63 | /* | |
64 | * prototypes | |
65 | */ | |
080dece3 TI |
66 | static struct seq_oss_midi *get_mdev(int dev); |
67 | static struct seq_oss_midi *get_mididev(struct seq_oss_devinfo *dp, int dev); | |
68 | static int send_synth_event(struct seq_oss_devinfo *dp, struct snd_seq_event *ev, int dev); | |
69 | static int send_midi_event(struct seq_oss_devinfo *dp, struct snd_seq_event *ev, struct seq_oss_midi *mdev); | |
1da177e4 LT |
70 | |
71 | /* | |
72 | * look up the existing ports | |
73 | * this looks a very exhausting job. | |
74 | */ | |
256ca9c3 | 75 | int |
1da177e4 LT |
76 | snd_seq_oss_midi_lookup_ports(int client) |
77 | { | |
080dece3 TI |
78 | struct snd_seq_client_info *clinfo; |
79 | struct snd_seq_port_info *pinfo; | |
1da177e4 | 80 | |
ecca82b4 TI |
81 | clinfo = kzalloc(sizeof(*clinfo), GFP_KERNEL); |
82 | pinfo = kzalloc(sizeof(*pinfo), GFP_KERNEL); | |
1da177e4 LT |
83 | if (! clinfo || ! pinfo) { |
84 | kfree(clinfo); | |
85 | kfree(pinfo); | |
86 | return -ENOMEM; | |
87 | } | |
88 | clinfo->client = -1; | |
89 | while (snd_seq_kernel_client_ctl(client, SNDRV_SEQ_IOCTL_QUERY_NEXT_CLIENT, clinfo) == 0) { | |
90 | if (clinfo->client == client) | |
91 | continue; /* ignore myself */ | |
92 | pinfo->addr.client = clinfo->client; | |
93 | pinfo->addr.port = -1; | |
94 | while (snd_seq_kernel_client_ctl(client, SNDRV_SEQ_IOCTL_QUERY_NEXT_PORT, pinfo) == 0) | |
95 | snd_seq_oss_midi_check_new_port(pinfo); | |
96 | } | |
97 | kfree(clinfo); | |
98 | kfree(pinfo); | |
99 | return 0; | |
100 | } | |
101 | ||
102 | ||
103 | /* | |
104 | */ | |
080dece3 | 105 | static struct seq_oss_midi * |
1da177e4 LT |
106 | get_mdev(int dev) |
107 | { | |
080dece3 | 108 | struct seq_oss_midi *mdev; |
1da177e4 LT |
109 | unsigned long flags; |
110 | ||
111 | spin_lock_irqsave(®ister_lock, flags); | |
112 | mdev = midi_devs[dev]; | |
113 | if (mdev) | |
114 | snd_use_lock_use(&mdev->use_lock); | |
115 | spin_unlock_irqrestore(®ister_lock, flags); | |
116 | return mdev; | |
117 | } | |
118 | ||
119 | /* | |
120 | * look for the identical slot | |
121 | */ | |
080dece3 | 122 | static struct seq_oss_midi * |
1da177e4 LT |
123 | find_slot(int client, int port) |
124 | { | |
125 | int i; | |
080dece3 | 126 | struct seq_oss_midi *mdev; |
1da177e4 LT |
127 | unsigned long flags; |
128 | ||
129 | spin_lock_irqsave(®ister_lock, flags); | |
130 | for (i = 0; i < max_midi_devs; i++) { | |
131 | mdev = midi_devs[i]; | |
132 | if (mdev && mdev->client == client && mdev->port == port) { | |
133 | /* found! */ | |
134 | snd_use_lock_use(&mdev->use_lock); | |
135 | spin_unlock_irqrestore(®ister_lock, flags); | |
136 | return mdev; | |
137 | } | |
138 | } | |
139 | spin_unlock_irqrestore(®ister_lock, flags); | |
140 | return NULL; | |
141 | } | |
142 | ||
143 | ||
144 | #define PERM_WRITE (SNDRV_SEQ_PORT_CAP_WRITE|SNDRV_SEQ_PORT_CAP_SUBS_WRITE) | |
145 | #define PERM_READ (SNDRV_SEQ_PORT_CAP_READ|SNDRV_SEQ_PORT_CAP_SUBS_READ) | |
146 | /* | |
147 | * register a new port if it doesn't exist yet | |
148 | */ | |
149 | int | |
080dece3 | 150 | snd_seq_oss_midi_check_new_port(struct snd_seq_port_info *pinfo) |
1da177e4 LT |
151 | { |
152 | int i; | |
080dece3 | 153 | struct seq_oss_midi *mdev; |
1da177e4 LT |
154 | unsigned long flags; |
155 | ||
156 | debug_printk(("check for MIDI client %d port %d\n", pinfo->addr.client, pinfo->addr.port)); | |
157 | /* the port must include generic midi */ | |
158 | if (! (pinfo->type & SNDRV_SEQ_PORT_TYPE_MIDI_GENERIC)) | |
159 | return 0; | |
160 | /* either read or write subscribable */ | |
161 | if ((pinfo->capability & PERM_WRITE) != PERM_WRITE && | |
162 | (pinfo->capability & PERM_READ) != PERM_READ) | |
163 | return 0; | |
164 | ||
165 | /* | |
166 | * look for the identical slot | |
167 | */ | |
168 | if ((mdev = find_slot(pinfo->addr.client, pinfo->addr.port)) != NULL) { | |
169 | /* already exists */ | |
170 | snd_use_lock_free(&mdev->use_lock); | |
171 | return 0; | |
172 | } | |
173 | ||
174 | /* | |
175 | * allocate midi info record | |
176 | */ | |
ecca82b4 | 177 | if ((mdev = kzalloc(sizeof(*mdev), GFP_KERNEL)) == NULL) { |
1da177e4 LT |
178 | snd_printk(KERN_ERR "can't malloc midi info\n"); |
179 | return -ENOMEM; | |
180 | } | |
181 | ||
182 | /* copy the port information */ | |
183 | mdev->client = pinfo->addr.client; | |
184 | mdev->port = pinfo->addr.port; | |
185 | mdev->flags = pinfo->capability; | |
186 | mdev->opened = 0; | |
187 | snd_use_lock_init(&mdev->use_lock); | |
188 | ||
189 | /* copy and truncate the name of synth device */ | |
190 | strlcpy(mdev->name, pinfo->name, sizeof(mdev->name)); | |
191 | ||
192 | /* create MIDI coder */ | |
193 | if (snd_midi_event_new(MAX_MIDI_EVENT_BUF, &mdev->coder) < 0) { | |
194 | snd_printk(KERN_ERR "can't malloc midi coder\n"); | |
195 | kfree(mdev); | |
196 | return -ENOMEM; | |
197 | } | |
198 | /* OSS sequencer adds running status to all sequences */ | |
199 | snd_midi_event_no_status(mdev->coder, 1); | |
200 | ||
201 | /* | |
202 | * look for en empty slot | |
203 | */ | |
204 | spin_lock_irqsave(®ister_lock, flags); | |
205 | for (i = 0; i < max_midi_devs; i++) { | |
206 | if (midi_devs[i] == NULL) | |
207 | break; | |
208 | } | |
209 | if (i >= max_midi_devs) { | |
210 | if (max_midi_devs >= SNDRV_SEQ_OSS_MAX_MIDI_DEVS) { | |
211 | spin_unlock_irqrestore(®ister_lock, flags); | |
212 | snd_midi_event_free(mdev->coder); | |
213 | kfree(mdev); | |
214 | return -ENOMEM; | |
215 | } | |
216 | max_midi_devs++; | |
217 | } | |
218 | mdev->seq_device = i; | |
219 | midi_devs[mdev->seq_device] = mdev; | |
220 | spin_unlock_irqrestore(®ister_lock, flags); | |
221 | ||
222 | return 0; | |
223 | } | |
224 | ||
225 | /* | |
226 | * release the midi device if it was registered | |
227 | */ | |
228 | int | |
229 | snd_seq_oss_midi_check_exit_port(int client, int port) | |
230 | { | |
080dece3 | 231 | struct seq_oss_midi *mdev; |
1da177e4 LT |
232 | unsigned long flags; |
233 | int index; | |
234 | ||
235 | if ((mdev = find_slot(client, port)) != NULL) { | |
236 | spin_lock_irqsave(®ister_lock, flags); | |
237 | midi_devs[mdev->seq_device] = NULL; | |
238 | spin_unlock_irqrestore(®ister_lock, flags); | |
239 | snd_use_lock_free(&mdev->use_lock); | |
240 | snd_use_lock_sync(&mdev->use_lock); | |
241 | if (mdev->coder) | |
242 | snd_midi_event_free(mdev->coder); | |
243 | kfree(mdev); | |
244 | } | |
245 | spin_lock_irqsave(®ister_lock, flags); | |
246 | for (index = max_midi_devs - 1; index >= 0; index--) { | |
247 | if (midi_devs[index]) | |
248 | break; | |
249 | } | |
250 | max_midi_devs = index + 1; | |
251 | spin_unlock_irqrestore(®ister_lock, flags); | |
252 | return 0; | |
253 | } | |
254 | ||
255 | ||
256 | /* | |
257 | * release the midi device if it was registered | |
258 | */ | |
259 | void | |
260 | snd_seq_oss_midi_clear_all(void) | |
261 | { | |
262 | int i; | |
080dece3 | 263 | struct seq_oss_midi *mdev; |
1da177e4 LT |
264 | unsigned long flags; |
265 | ||
266 | spin_lock_irqsave(®ister_lock, flags); | |
267 | for (i = 0; i < max_midi_devs; i++) { | |
268 | if ((mdev = midi_devs[i]) != NULL) { | |
269 | if (mdev->coder) | |
270 | snd_midi_event_free(mdev->coder); | |
271 | kfree(mdev); | |
272 | midi_devs[i] = NULL; | |
273 | } | |
274 | } | |
275 | max_midi_devs = 0; | |
276 | spin_unlock_irqrestore(®ister_lock, flags); | |
277 | } | |
278 | ||
279 | ||
280 | /* | |
281 | * set up midi tables | |
282 | */ | |
283 | void | |
080dece3 | 284 | snd_seq_oss_midi_setup(struct seq_oss_devinfo *dp) |
1da177e4 LT |
285 | { |
286 | dp->max_mididev = max_midi_devs; | |
287 | } | |
288 | ||
289 | /* | |
290 | * clean up midi tables | |
291 | */ | |
292 | void | |
080dece3 | 293 | snd_seq_oss_midi_cleanup(struct seq_oss_devinfo *dp) |
1da177e4 LT |
294 | { |
295 | int i; | |
296 | for (i = 0; i < dp->max_mididev; i++) | |
297 | snd_seq_oss_midi_close(dp, i); | |
298 | dp->max_mididev = 0; | |
299 | } | |
300 | ||
301 | ||
302 | /* | |
303 | * open all midi devices. ignore errors. | |
304 | */ | |
305 | void | |
080dece3 | 306 | snd_seq_oss_midi_open_all(struct seq_oss_devinfo *dp, int file_mode) |
1da177e4 LT |
307 | { |
308 | int i; | |
309 | for (i = 0; i < dp->max_mididev; i++) | |
310 | snd_seq_oss_midi_open(dp, i, file_mode); | |
311 | } | |
312 | ||
313 | ||
314 | /* | |
315 | * get the midi device information | |
316 | */ | |
080dece3 TI |
317 | static struct seq_oss_midi * |
318 | get_mididev(struct seq_oss_devinfo *dp, int dev) | |
1da177e4 LT |
319 | { |
320 | if (dev < 0 || dev >= dp->max_mididev) | |
321 | return NULL; | |
322 | return get_mdev(dev); | |
323 | } | |
324 | ||
325 | ||
326 | /* | |
327 | * open the midi device if not opened yet | |
328 | */ | |
329 | int | |
080dece3 | 330 | snd_seq_oss_midi_open(struct seq_oss_devinfo *dp, int dev, int fmode) |
1da177e4 LT |
331 | { |
332 | int perm; | |
080dece3 TI |
333 | struct seq_oss_midi *mdev; |
334 | struct snd_seq_port_subscribe subs; | |
1da177e4 LT |
335 | |
336 | if ((mdev = get_mididev(dp, dev)) == NULL) | |
337 | return -ENODEV; | |
338 | ||
339 | /* already used? */ | |
340 | if (mdev->opened && mdev->devinfo != dp) { | |
341 | snd_use_lock_free(&mdev->use_lock); | |
342 | return -EBUSY; | |
343 | } | |
344 | ||
345 | perm = 0; | |
346 | if (is_write_mode(fmode)) | |
347 | perm |= PERM_WRITE; | |
348 | if (is_read_mode(fmode)) | |
349 | perm |= PERM_READ; | |
350 | perm &= mdev->flags; | |
351 | if (perm == 0) { | |
352 | snd_use_lock_free(&mdev->use_lock); | |
353 | return -ENXIO; | |
354 | } | |
355 | ||
356 | /* already opened? */ | |
357 | if ((mdev->opened & perm) == perm) { | |
358 | snd_use_lock_free(&mdev->use_lock); | |
359 | return 0; | |
360 | } | |
361 | ||
362 | perm &= ~mdev->opened; | |
363 | ||
364 | memset(&subs, 0, sizeof(subs)); | |
365 | ||
366 | if (perm & PERM_WRITE) { | |
367 | subs.sender = dp->addr; | |
368 | subs.dest.client = mdev->client; | |
369 | subs.dest.port = mdev->port; | |
370 | if (snd_seq_kernel_client_ctl(dp->cseq, SNDRV_SEQ_IOCTL_SUBSCRIBE_PORT, &subs) >= 0) | |
371 | mdev->opened |= PERM_WRITE; | |
372 | } | |
373 | if (perm & PERM_READ) { | |
374 | subs.sender.client = mdev->client; | |
375 | subs.sender.port = mdev->port; | |
376 | subs.dest = dp->addr; | |
377 | subs.flags = SNDRV_SEQ_PORT_SUBS_TIMESTAMP; | |
378 | subs.queue = dp->queue; /* queue for timestamps */ | |
379 | if (snd_seq_kernel_client_ctl(dp->cseq, SNDRV_SEQ_IOCTL_SUBSCRIBE_PORT, &subs) >= 0) | |
380 | mdev->opened |= PERM_READ; | |
381 | } | |
382 | ||
383 | if (! mdev->opened) { | |
384 | snd_use_lock_free(&mdev->use_lock); | |
385 | return -ENXIO; | |
386 | } | |
387 | ||
388 | mdev->devinfo = dp; | |
389 | snd_use_lock_free(&mdev->use_lock); | |
390 | return 0; | |
391 | } | |
392 | ||
393 | /* | |
394 | * close the midi device if already opened | |
395 | */ | |
396 | int | |
080dece3 | 397 | snd_seq_oss_midi_close(struct seq_oss_devinfo *dp, int dev) |
1da177e4 | 398 | { |
080dece3 TI |
399 | struct seq_oss_midi *mdev; |
400 | struct snd_seq_port_subscribe subs; | |
1da177e4 LT |
401 | |
402 | if ((mdev = get_mididev(dp, dev)) == NULL) | |
403 | return -ENODEV; | |
404 | if (! mdev->opened || mdev->devinfo != dp) { | |
405 | snd_use_lock_free(&mdev->use_lock); | |
406 | return 0; | |
407 | } | |
408 | ||
409 | debug_printk(("closing client %d port %d mode %d\n", mdev->client, mdev->port, mdev->opened)); | |
410 | memset(&subs, 0, sizeof(subs)); | |
411 | if (mdev->opened & PERM_WRITE) { | |
412 | subs.sender = dp->addr; | |
413 | subs.dest.client = mdev->client; | |
414 | subs.dest.port = mdev->port; | |
415 | snd_seq_kernel_client_ctl(dp->cseq, SNDRV_SEQ_IOCTL_UNSUBSCRIBE_PORT, &subs); | |
416 | } | |
417 | if (mdev->opened & PERM_READ) { | |
418 | subs.sender.client = mdev->client; | |
419 | subs.sender.port = mdev->port; | |
420 | subs.dest = dp->addr; | |
421 | snd_seq_kernel_client_ctl(dp->cseq, SNDRV_SEQ_IOCTL_UNSUBSCRIBE_PORT, &subs); | |
422 | } | |
423 | ||
424 | mdev->opened = 0; | |
425 | mdev->devinfo = NULL; | |
426 | ||
427 | snd_use_lock_free(&mdev->use_lock); | |
428 | return 0; | |
429 | } | |
430 | ||
431 | /* | |
432 | * change seq capability flags to file mode flags | |
433 | */ | |
434 | int | |
080dece3 | 435 | snd_seq_oss_midi_filemode(struct seq_oss_devinfo *dp, int dev) |
1da177e4 | 436 | { |
080dece3 | 437 | struct seq_oss_midi *mdev; |
1da177e4 LT |
438 | int mode; |
439 | ||
440 | if ((mdev = get_mididev(dp, dev)) == NULL) | |
441 | return 0; | |
442 | ||
443 | mode = 0; | |
444 | if (mdev->opened & PERM_WRITE) | |
445 | mode |= SNDRV_SEQ_OSS_FILE_WRITE; | |
446 | if (mdev->opened & PERM_READ) | |
447 | mode |= SNDRV_SEQ_OSS_FILE_READ; | |
448 | ||
449 | snd_use_lock_free(&mdev->use_lock); | |
450 | return mode; | |
451 | } | |
452 | ||
453 | /* | |
454 | * reset the midi device and close it: | |
455 | * so far, only close the device. | |
456 | */ | |
457 | void | |
080dece3 | 458 | snd_seq_oss_midi_reset(struct seq_oss_devinfo *dp, int dev) |
1da177e4 | 459 | { |
080dece3 | 460 | struct seq_oss_midi *mdev; |
1da177e4 LT |
461 | |
462 | if ((mdev = get_mididev(dp, dev)) == NULL) | |
463 | return; | |
464 | if (! mdev->opened) { | |
465 | snd_use_lock_free(&mdev->use_lock); | |
466 | return; | |
467 | } | |
468 | ||
469 | if (mdev->opened & PERM_WRITE) { | |
080dece3 | 470 | struct snd_seq_event ev; |
1da177e4 LT |
471 | int c; |
472 | ||
473 | debug_printk(("resetting client %d port %d\n", mdev->client, mdev->port)); | |
474 | memset(&ev, 0, sizeof(ev)); | |
475 | ev.dest.client = mdev->client; | |
476 | ev.dest.port = mdev->port; | |
477 | ev.queue = dp->queue; | |
478 | ev.source.port = dp->port; | |
479 | if (dp->seq_mode == SNDRV_SEQ_OSS_MODE_SYNTH) { | |
480 | ev.type = SNDRV_SEQ_EVENT_SENSING; | |
08d03340 | 481 | snd_seq_oss_dispatch(dp, &ev, 0, 0); |
1da177e4 LT |
482 | } |
483 | for (c = 0; c < 16; c++) { | |
484 | ev.type = SNDRV_SEQ_EVENT_CONTROLLER; | |
485 | ev.data.control.channel = c; | |
08d03340 CL |
486 | ev.data.control.param = MIDI_CTL_ALL_NOTES_OFF; |
487 | snd_seq_oss_dispatch(dp, &ev, 0, 0); | |
1da177e4 | 488 | if (dp->seq_mode == SNDRV_SEQ_OSS_MODE_MUSIC) { |
08d03340 CL |
489 | ev.data.control.param = |
490 | MIDI_CTL_RESET_CONTROLLERS; | |
491 | snd_seq_oss_dispatch(dp, &ev, 0, 0); | |
1da177e4 LT |
492 | ev.type = SNDRV_SEQ_EVENT_PITCHBEND; |
493 | ev.data.control.value = 0; | |
08d03340 | 494 | snd_seq_oss_dispatch(dp, &ev, 0, 0); |
1da177e4 LT |
495 | } |
496 | } | |
497 | } | |
498 | // snd_seq_oss_midi_close(dp, dev); | |
499 | snd_use_lock_free(&mdev->use_lock); | |
500 | } | |
501 | ||
502 | ||
503 | /* | |
504 | * get client/port of the specified MIDI device | |
505 | */ | |
506 | void | |
080dece3 | 507 | snd_seq_oss_midi_get_addr(struct seq_oss_devinfo *dp, int dev, struct snd_seq_addr *addr) |
1da177e4 | 508 | { |
080dece3 | 509 | struct seq_oss_midi *mdev; |
1da177e4 LT |
510 | |
511 | if ((mdev = get_mididev(dp, dev)) == NULL) | |
512 | return; | |
513 | addr->client = mdev->client; | |
514 | addr->port = mdev->port; | |
515 | snd_use_lock_free(&mdev->use_lock); | |
516 | } | |
517 | ||
518 | ||
519 | /* | |
520 | * input callback - this can be atomic | |
521 | */ | |
522 | int | |
080dece3 | 523 | snd_seq_oss_midi_input(struct snd_seq_event *ev, int direct, void *private_data) |
1da177e4 | 524 | { |
080dece3 TI |
525 | struct seq_oss_devinfo *dp = (struct seq_oss_devinfo *)private_data; |
526 | struct seq_oss_midi *mdev; | |
1da177e4 LT |
527 | int rc; |
528 | ||
529 | if (dp->readq == NULL) | |
530 | return 0; | |
531 | if ((mdev = find_slot(ev->source.client, ev->source.port)) == NULL) | |
532 | return 0; | |
533 | if (! (mdev->opened & PERM_READ)) { | |
534 | snd_use_lock_free(&mdev->use_lock); | |
535 | return 0; | |
536 | } | |
537 | ||
538 | if (dp->seq_mode == SNDRV_SEQ_OSS_MODE_MUSIC) | |
539 | rc = send_synth_event(dp, ev, mdev->seq_device); | |
540 | else | |
541 | rc = send_midi_event(dp, ev, mdev); | |
542 | ||
543 | snd_use_lock_free(&mdev->use_lock); | |
544 | return rc; | |
545 | } | |
546 | ||
547 | /* | |
548 | * convert ALSA sequencer event to OSS synth event | |
549 | */ | |
550 | static int | |
080dece3 | 551 | send_synth_event(struct seq_oss_devinfo *dp, struct snd_seq_event *ev, int dev) |
1da177e4 | 552 | { |
080dece3 | 553 | union evrec ossev; |
1da177e4 LT |
554 | |
555 | memset(&ossev, 0, sizeof(ossev)); | |
556 | ||
557 | switch (ev->type) { | |
558 | case SNDRV_SEQ_EVENT_NOTEON: | |
559 | ossev.v.cmd = MIDI_NOTEON; break; | |
560 | case SNDRV_SEQ_EVENT_NOTEOFF: | |
561 | ossev.v.cmd = MIDI_NOTEOFF; break; | |
562 | case SNDRV_SEQ_EVENT_KEYPRESS: | |
563 | ossev.v.cmd = MIDI_KEY_PRESSURE; break; | |
564 | case SNDRV_SEQ_EVENT_CONTROLLER: | |
565 | ossev.l.cmd = MIDI_CTL_CHANGE; break; | |
566 | case SNDRV_SEQ_EVENT_PGMCHANGE: | |
567 | ossev.l.cmd = MIDI_PGM_CHANGE; break; | |
568 | case SNDRV_SEQ_EVENT_CHANPRESS: | |
569 | ossev.l.cmd = MIDI_CHN_PRESSURE; break; | |
570 | case SNDRV_SEQ_EVENT_PITCHBEND: | |
571 | ossev.l.cmd = MIDI_PITCH_BEND; break; | |
572 | default: | |
573 | return 0; /* not supported */ | |
574 | } | |
575 | ||
576 | ossev.v.dev = dev; | |
577 | ||
578 | switch (ev->type) { | |
579 | case SNDRV_SEQ_EVENT_NOTEON: | |
580 | case SNDRV_SEQ_EVENT_NOTEOFF: | |
581 | case SNDRV_SEQ_EVENT_KEYPRESS: | |
582 | ossev.v.code = EV_CHN_VOICE; | |
583 | ossev.v.note = ev->data.note.note; | |
584 | ossev.v.parm = ev->data.note.velocity; | |
585 | ossev.v.chn = ev->data.note.channel; | |
586 | break; | |
587 | case SNDRV_SEQ_EVENT_CONTROLLER: | |
588 | case SNDRV_SEQ_EVENT_PGMCHANGE: | |
589 | case SNDRV_SEQ_EVENT_CHANPRESS: | |
590 | ossev.l.code = EV_CHN_COMMON; | |
591 | ossev.l.p1 = ev->data.control.param; | |
592 | ossev.l.val = ev->data.control.value; | |
593 | ossev.l.chn = ev->data.control.channel; | |
594 | break; | |
595 | case SNDRV_SEQ_EVENT_PITCHBEND: | |
596 | ossev.l.code = EV_CHN_COMMON; | |
597 | ossev.l.val = ev->data.control.value + 8192; | |
598 | ossev.l.chn = ev->data.control.channel; | |
599 | break; | |
600 | } | |
601 | ||
602 | snd_seq_oss_readq_put_timestamp(dp->readq, ev->time.tick, dp->seq_mode); | |
603 | snd_seq_oss_readq_put_event(dp->readq, &ossev); | |
604 | ||
605 | return 0; | |
606 | } | |
607 | ||
608 | /* | |
609 | * decode event and send MIDI bytes to read queue | |
610 | */ | |
611 | static int | |
080dece3 | 612 | send_midi_event(struct seq_oss_devinfo *dp, struct snd_seq_event *ev, struct seq_oss_midi *mdev) |
1da177e4 LT |
613 | { |
614 | char msg[32]; | |
615 | int len; | |
616 | ||
617 | snd_seq_oss_readq_put_timestamp(dp->readq, ev->time.tick, dp->seq_mode); | |
618 | if (!dp->timer->running) | |
619 | len = snd_seq_oss_timer_start(dp->timer); | |
620 | if (ev->type == SNDRV_SEQ_EVENT_SYSEX) { | |
621 | if ((ev->flags & SNDRV_SEQ_EVENT_LENGTH_MASK) == SNDRV_SEQ_EVENT_LENGTH_VARIABLE) | |
622 | snd_seq_oss_readq_puts(dp->readq, mdev->seq_device, | |
623 | ev->data.ext.ptr, ev->data.ext.len); | |
624 | } else { | |
625 | len = snd_midi_event_decode(mdev->coder, msg, sizeof(msg), ev); | |
626 | if (len > 0) | |
627 | snd_seq_oss_readq_puts(dp->readq, mdev->seq_device, msg, len); | |
628 | } | |
629 | ||
630 | return 0; | |
631 | } | |
632 | ||
633 | ||
634 | /* | |
635 | * dump midi data | |
636 | * return 0 : enqueued | |
637 | * non-zero : invalid - ignored | |
638 | */ | |
639 | int | |
080dece3 | 640 | snd_seq_oss_midi_putc(struct seq_oss_devinfo *dp, int dev, unsigned char c, struct snd_seq_event *ev) |
1da177e4 | 641 | { |
080dece3 | 642 | struct seq_oss_midi *mdev; |
1da177e4 LT |
643 | |
644 | if ((mdev = get_mididev(dp, dev)) == NULL) | |
645 | return -ENODEV; | |
646 | if (snd_midi_event_encode_byte(mdev->coder, c, ev) > 0) { | |
647 | snd_seq_oss_fill_addr(dp, ev, mdev->client, mdev->port); | |
648 | snd_use_lock_free(&mdev->use_lock); | |
649 | return 0; | |
650 | } | |
651 | snd_use_lock_free(&mdev->use_lock); | |
652 | return -EINVAL; | |
653 | } | |
654 | ||
655 | /* | |
656 | * create OSS compatible midi_info record | |
657 | */ | |
658 | int | |
080dece3 | 659 | snd_seq_oss_midi_make_info(struct seq_oss_devinfo *dp, int dev, struct midi_info *inf) |
1da177e4 | 660 | { |
080dece3 | 661 | struct seq_oss_midi *mdev; |
1da177e4 LT |
662 | |
663 | if ((mdev = get_mididev(dp, dev)) == NULL) | |
664 | return -ENXIO; | |
665 | inf->device = dev; | |
666 | inf->dev_type = 0; /* FIXME: ?? */ | |
667 | inf->capabilities = 0; /* FIXME: ?? */ | |
668 | strlcpy(inf->name, mdev->name, sizeof(inf->name)); | |
669 | snd_use_lock_free(&mdev->use_lock); | |
670 | return 0; | |
671 | } | |
672 | ||
673 | ||
04f141a8 | 674 | #ifdef CONFIG_PROC_FS |
1da177e4 LT |
675 | /* |
676 | * proc interface | |
677 | */ | |
678 | static char * | |
679 | capmode_str(int val) | |
680 | { | |
681 | val &= PERM_READ|PERM_WRITE; | |
682 | if (val == (PERM_READ|PERM_WRITE)) | |
683 | return "read/write"; | |
684 | else if (val == PERM_READ) | |
685 | return "read"; | |
686 | else if (val == PERM_WRITE) | |
687 | return "write"; | |
688 | else | |
689 | return "none"; | |
690 | } | |
691 | ||
692 | void | |
080dece3 | 693 | snd_seq_oss_midi_info_read(struct snd_info_buffer *buf) |
1da177e4 LT |
694 | { |
695 | int i; | |
080dece3 | 696 | struct seq_oss_midi *mdev; |
1da177e4 LT |
697 | |
698 | snd_iprintf(buf, "\nNumber of MIDI devices: %d\n", max_midi_devs); | |
699 | for (i = 0; i < max_midi_devs; i++) { | |
700 | snd_iprintf(buf, "\nmidi %d: ", i); | |
701 | mdev = get_mdev(i); | |
702 | if (mdev == NULL) { | |
703 | snd_iprintf(buf, "*empty*\n"); | |
704 | continue; | |
705 | } | |
706 | snd_iprintf(buf, "[%s] ALSA port %d:%d\n", mdev->name, | |
707 | mdev->client, mdev->port); | |
708 | snd_iprintf(buf, " capability %s / opened %s\n", | |
709 | capmode_str(mdev->flags), | |
710 | capmode_str(mdev->opened)); | |
711 | snd_use_lock_free(&mdev->use_lock); | |
712 | } | |
713 | } | |
04f141a8 | 714 | #endif /* CONFIG_PROC_FS */ |