Commit | Line | Data |
---|---|---|
1da177e4 | 1 | /* |
f30c2269 | 2 | * sound/oss/sequencer.c |
1da177e4 LT |
3 | * |
4 | * The sequencer personality manager. | |
5 | */ | |
6 | /* | |
7 | * Copyright (C) by Hannu Savolainen 1993-1997 | |
8 | * | |
9 | * OSS/Free for Linux is distributed under the GNU GENERAL PUBLIC LICENSE (GPL) | |
10 | * Version 2 (June 1991). See the "COPYING" file distributed with this software | |
11 | * for more info. | |
12 | */ | |
13 | /* | |
14 | * Thomas Sailer : ioctl code reworked (vmalloc/vfree removed) | |
15 | * Alan Cox : reformatted and fixed a pair of null pointer bugs | |
16 | */ | |
17 | #include <linux/kmod.h> | |
18 | #include <linux/spinlock.h> | |
1da177e4 LT |
19 | #include "sound_config.h" |
20 | ||
21 | #include "midi_ctrl.h" | |
22 | ||
23 | static int sequencer_ok; | |
24 | static struct sound_timer_operations *tmr; | |
25 | static int tmr_no = -1; /* Currently selected timer */ | |
26 | static int pending_timer = -1; /* For timer change operation */ | |
27 | extern unsigned long seq_time; | |
28 | ||
29 | static int obsolete_api_used; | |
30 | static DEFINE_SPINLOCK(lock); | |
31 | ||
32 | /* | |
33 | * Local counts for number of synth and MIDI devices. These are initialized | |
34 | * by the sequencer_open. | |
35 | */ | |
36 | static int max_mididev; | |
37 | static int max_synthdev; | |
38 | ||
39 | /* | |
40 | * The seq_mode gives the operating mode of the sequencer: | |
41 | * 1 = level1 (the default) | |
42 | * 2 = level2 (extended capabilities) | |
43 | */ | |
44 | ||
45 | #define SEQ_1 1 | |
46 | #define SEQ_2 2 | |
47 | static int seq_mode = SEQ_1; | |
48 | ||
49 | static DECLARE_WAIT_QUEUE_HEAD(seq_sleeper); | |
50 | static DECLARE_WAIT_QUEUE_HEAD(midi_sleeper); | |
51 | ||
52 | static int midi_opened[MAX_MIDI_DEV]; | |
53 | ||
54 | static int midi_written[MAX_MIDI_DEV]; | |
55 | ||
56 | static unsigned long prev_input_time; | |
57 | static int prev_event_time; | |
58 | ||
59 | #include "tuning.h" | |
60 | ||
61 | #define EV_SZ 8 | |
62 | #define IEV_SZ 8 | |
63 | ||
64 | static unsigned char *queue; | |
65 | static unsigned char *iqueue; | |
66 | ||
67 | static volatile int qhead, qtail, qlen; | |
68 | static volatile int iqhead, iqtail, iqlen; | |
69 | static volatile int seq_playing; | |
70 | static volatile int sequencer_busy; | |
71 | static int output_threshold; | |
72 | static long pre_event_timeout; | |
73 | static unsigned synth_open_mask; | |
74 | ||
75 | static int seq_queue(unsigned char *note, char nonblock); | |
76 | static void seq_startplay(void); | |
77 | static int seq_sync(void); | |
78 | static void seq_reset(void); | |
79 | ||
80 | #if MAX_SYNTH_DEV > 15 | |
81 | #error Too many synthesizer devices enabled. | |
82 | #endif | |
83 | ||
84 | int sequencer_read(int dev, struct file *file, char __user *buf, int count) | |
85 | { | |
86 | int c = count, p = 0; | |
87 | int ev_len; | |
88 | unsigned long flags; | |
89 | ||
90 | dev = dev >> 4; | |
91 | ||
92 | ev_len = seq_mode == SEQ_1 ? 4 : 8; | |
93 | ||
94 | spin_lock_irqsave(&lock,flags); | |
95 | ||
96 | if (!iqlen) | |
97 | { | |
98 | spin_unlock_irqrestore(&lock,flags); | |
99 | if (file->f_flags & O_NONBLOCK) { | |
100 | return -EAGAIN; | |
101 | } | |
102 | ||
103 | interruptible_sleep_on_timeout(&midi_sleeper, | |
104 | pre_event_timeout); | |
105 | spin_lock_irqsave(&lock,flags); | |
106 | if (!iqlen) | |
107 | { | |
108 | spin_unlock_irqrestore(&lock,flags); | |
109 | return 0; | |
110 | } | |
111 | } | |
112 | while (iqlen && c >= ev_len) | |
113 | { | |
114 | char *fixit = (char *) &iqueue[iqhead * IEV_SZ]; | |
115 | spin_unlock_irqrestore(&lock,flags); | |
116 | if (copy_to_user(&(buf)[p], fixit, ev_len)) | |
117 | return count - c; | |
118 | p += ev_len; | |
119 | c -= ev_len; | |
120 | ||
121 | spin_lock_irqsave(&lock,flags); | |
122 | iqhead = (iqhead + 1) % SEQ_MAX_QUEUE; | |
123 | iqlen--; | |
124 | } | |
125 | spin_unlock_irqrestore(&lock,flags); | |
126 | return count - c; | |
127 | } | |
128 | ||
129 | static void sequencer_midi_output(int dev) | |
130 | { | |
131 | /* | |
132 | * Currently NOP | |
133 | */ | |
134 | } | |
135 | ||
136 | void seq_copy_to_input(unsigned char *event_rec, int len) | |
137 | { | |
138 | unsigned long flags; | |
139 | ||
140 | /* | |
141 | * Verify that the len is valid for the current mode. | |
142 | */ | |
143 | ||
144 | if (len != 4 && len != 8) | |
145 | return; | |
146 | if ((seq_mode == SEQ_1) != (len == 4)) | |
147 | return; | |
148 | ||
149 | if (iqlen >= (SEQ_MAX_QUEUE - 1)) | |
150 | return; /* Overflow */ | |
151 | ||
152 | spin_lock_irqsave(&lock,flags); | |
153 | memcpy(&iqueue[iqtail * IEV_SZ], event_rec, len); | |
154 | iqlen++; | |
155 | iqtail = (iqtail + 1) % SEQ_MAX_QUEUE; | |
156 | wake_up(&midi_sleeper); | |
157 | spin_unlock_irqrestore(&lock,flags); | |
158 | } | |
ece7f77b | 159 | EXPORT_SYMBOL(seq_copy_to_input); |
1da177e4 LT |
160 | |
161 | static void sequencer_midi_input(int dev, unsigned char data) | |
162 | { | |
163 | unsigned int tstamp; | |
164 | unsigned char event_rec[4]; | |
165 | ||
166 | if (data == 0xfe) /* Ignore active sensing */ | |
167 | return; | |
168 | ||
169 | tstamp = jiffies - seq_time; | |
170 | ||
171 | if (tstamp != prev_input_time) | |
172 | { | |
173 | tstamp = (tstamp << 8) | SEQ_WAIT; | |
174 | seq_copy_to_input((unsigned char *) &tstamp, 4); | |
175 | prev_input_time = tstamp; | |
176 | } | |
177 | event_rec[0] = SEQ_MIDIPUTC; | |
178 | event_rec[1] = data; | |
179 | event_rec[2] = dev; | |
180 | event_rec[3] = 0; | |
181 | ||
182 | seq_copy_to_input(event_rec, 4); | |
183 | } | |
184 | ||
185 | void seq_input_event(unsigned char *event_rec, int len) | |
186 | { | |
187 | unsigned long this_time; | |
188 | ||
189 | if (seq_mode == SEQ_2) | |
190 | this_time = tmr->get_time(tmr_no); | |
191 | else | |
192 | this_time = jiffies - seq_time; | |
193 | ||
194 | if (this_time != prev_input_time) | |
195 | { | |
196 | unsigned char tmp_event[8]; | |
197 | ||
198 | tmp_event[0] = EV_TIMING; | |
199 | tmp_event[1] = TMR_WAIT_ABS; | |
200 | tmp_event[2] = 0; | |
201 | tmp_event[3] = 0; | |
202 | *(unsigned int *) &tmp_event[4] = this_time; | |
203 | ||
204 | seq_copy_to_input(tmp_event, 8); | |
205 | prev_input_time = this_time; | |
206 | } | |
207 | seq_copy_to_input(event_rec, len); | |
208 | } | |
ece7f77b | 209 | EXPORT_SYMBOL(seq_input_event); |
1da177e4 LT |
210 | |
211 | int sequencer_write(int dev, struct file *file, const char __user *buf, int count) | |
212 | { | |
213 | unsigned char event_rec[EV_SZ], ev_code; | |
214 | int p = 0, c, ev_size; | |
215 | int err; | |
216 | int mode = translate_mode(file); | |
217 | ||
218 | dev = dev >> 4; | |
219 | ||
220 | DEB(printk("sequencer_write(dev=%d, count=%d)\n", dev, count)); | |
221 | ||
222 | if (mode == OPEN_READ) | |
223 | return -EIO; | |
224 | ||
225 | c = count; | |
226 | ||
227 | while (c >= 4) | |
228 | { | |
229 | if (copy_from_user((char *) event_rec, &(buf)[p], 4)) | |
230 | goto out; | |
231 | ev_code = event_rec[0]; | |
232 | ||
233 | if (ev_code == SEQ_FULLSIZE) | |
234 | { | |
235 | int err, fmt; | |
236 | ||
237 | dev = *(unsigned short *) &event_rec[2]; | |
238 | if (dev < 0 || dev >= max_synthdev || synth_devs[dev] == NULL) | |
239 | return -ENXIO; | |
240 | ||
241 | if (!(synth_open_mask & (1 << dev))) | |
242 | return -ENXIO; | |
243 | ||
244 | fmt = (*(short *) &event_rec[0]) & 0xffff; | |
245 | err = synth_devs[dev]->load_patch(dev, fmt, buf, p + 4, c, 0); | |
246 | if (err < 0) | |
247 | return err; | |
248 | ||
249 | return err; | |
250 | } | |
251 | if (ev_code >= 128) | |
252 | { | |
253 | if (seq_mode == SEQ_2 && ev_code == SEQ_EXTENDED) | |
254 | { | |
255 | printk(KERN_WARNING "Sequencer: Invalid level 2 event %x\n", ev_code); | |
256 | return -EINVAL; | |
257 | } | |
258 | ev_size = 8; | |
259 | ||
260 | if (c < ev_size) | |
261 | { | |
262 | if (!seq_playing) | |
263 | seq_startplay(); | |
264 | return count - c; | |
265 | } | |
266 | if (copy_from_user((char *)&event_rec[4], | |
267 | &(buf)[p + 4], 4)) | |
268 | goto out; | |
269 | ||
270 | } | |
271 | else | |
272 | { | |
273 | if (seq_mode == SEQ_2) | |
274 | { | |
275 | printk(KERN_WARNING "Sequencer: 4 byte event in level 2 mode\n"); | |
276 | return -EINVAL; | |
277 | } | |
278 | ev_size = 4; | |
279 | ||
280 | if (event_rec[0] != SEQ_MIDIPUTC) | |
281 | obsolete_api_used = 1; | |
282 | } | |
283 | ||
284 | if (event_rec[0] == SEQ_MIDIPUTC) | |
285 | { | |
286 | if (!midi_opened[event_rec[2]]) | |
287 | { | |
288 | int mode; | |
289 | int dev = event_rec[2]; | |
290 | ||
291 | if (dev >= max_mididev || midi_devs[dev]==NULL) | |
292 | { | |
293 | /*printk("Sequencer Error: Nonexistent MIDI device %d\n", dev);*/ | |
294 | return -ENXIO; | |
295 | } | |
296 | mode = translate_mode(file); | |
297 | ||
298 | if ((err = midi_devs[dev]->open(dev, mode, | |
299 | sequencer_midi_input, sequencer_midi_output)) < 0) | |
300 | { | |
301 | seq_reset(); | |
302 | printk(KERN_WARNING "Sequencer Error: Unable to open Midi #%d\n", dev); | |
303 | return err; | |
304 | } | |
305 | midi_opened[dev] = 1; | |
306 | } | |
307 | } | |
308 | if (!seq_queue(event_rec, (file->f_flags & (O_NONBLOCK) ? 1 : 0))) | |
309 | { | |
310 | int processed = count - c; | |
311 | ||
312 | if (!seq_playing) | |
313 | seq_startplay(); | |
314 | ||
315 | if (!processed && (file->f_flags & O_NONBLOCK)) | |
316 | return -EAGAIN; | |
317 | else | |
318 | return processed; | |
319 | } | |
320 | p += ev_size; | |
321 | c -= ev_size; | |
322 | } | |
323 | ||
324 | if (!seq_playing) | |
325 | seq_startplay(); | |
326 | out: | |
327 | return count; | |
328 | } | |
329 | ||
330 | static int seq_queue(unsigned char *note, char nonblock) | |
331 | { | |
332 | ||
333 | /* | |
334 | * Test if there is space in the queue | |
335 | */ | |
336 | ||
337 | if (qlen >= SEQ_MAX_QUEUE) | |
338 | if (!seq_playing) | |
339 | seq_startplay(); /* | |
340 | * Give chance to drain the queue | |
341 | */ | |
342 | ||
343 | if (!nonblock && qlen >= SEQ_MAX_QUEUE && !waitqueue_active(&seq_sleeper)) { | |
344 | /* | |
345 | * Sleep until there is enough space on the queue | |
346 | */ | |
347 | interruptible_sleep_on(&seq_sleeper); | |
348 | } | |
349 | if (qlen >= SEQ_MAX_QUEUE) | |
350 | { | |
351 | return 0; /* | |
352 | * To be sure | |
353 | */ | |
354 | } | |
355 | memcpy(&queue[qtail * EV_SZ], note, EV_SZ); | |
356 | ||
357 | qtail = (qtail + 1) % SEQ_MAX_QUEUE; | |
358 | qlen++; | |
359 | ||
360 | return 1; | |
361 | } | |
362 | ||
363 | static int extended_event(unsigned char *q) | |
364 | { | |
365 | int dev = q[2]; | |
366 | ||
367 | if (dev < 0 || dev >= max_synthdev) | |
368 | return -ENXIO; | |
369 | ||
370 | if (!(synth_open_mask & (1 << dev))) | |
371 | return -ENXIO; | |
372 | ||
373 | switch (q[1]) | |
374 | { | |
375 | case SEQ_NOTEOFF: | |
376 | synth_devs[dev]->kill_note(dev, q[3], q[4], q[5]); | |
377 | break; | |
378 | ||
379 | case SEQ_NOTEON: | |
380 | if (q[4] > 127 && q[4] != 255) | |
381 | return 0; | |
382 | ||
383 | if (q[5] == 0) | |
384 | { | |
385 | synth_devs[dev]->kill_note(dev, q[3], q[4], q[5]); | |
386 | break; | |
387 | } | |
388 | synth_devs[dev]->start_note(dev, q[3], q[4], q[5]); | |
389 | break; | |
390 | ||
391 | case SEQ_PGMCHANGE: | |
392 | synth_devs[dev]->set_instr(dev, q[3], q[4]); | |
393 | break; | |
394 | ||
395 | case SEQ_AFTERTOUCH: | |
396 | synth_devs[dev]->aftertouch(dev, q[3], q[4]); | |
397 | break; | |
398 | ||
399 | case SEQ_BALANCE: | |
400 | synth_devs[dev]->panning(dev, q[3], (char) q[4]); | |
401 | break; | |
402 | ||
403 | case SEQ_CONTROLLER: | |
404 | synth_devs[dev]->controller(dev, q[3], q[4], (short) (q[5] | (q[6] << 8))); | |
405 | break; | |
406 | ||
407 | case SEQ_VOLMODE: | |
408 | if (synth_devs[dev]->volume_method != NULL) | |
409 | synth_devs[dev]->volume_method(dev, q[3]); | |
410 | break; | |
411 | ||
412 | default: | |
413 | return -EINVAL; | |
414 | } | |
415 | return 0; | |
416 | } | |
417 | ||
418 | static int find_voice(int dev, int chn, int note) | |
419 | { | |
420 | unsigned short key; | |
421 | int i; | |
422 | ||
423 | key = (chn << 8) | (note + 1); | |
424 | for (i = 0; i < synth_devs[dev]->alloc.max_voice; i++) | |
425 | if (synth_devs[dev]->alloc.map[i] == key) | |
426 | return i; | |
427 | return -1; | |
428 | } | |
429 | ||
430 | static int alloc_voice(int dev, int chn, int note) | |
431 | { | |
432 | unsigned short key; | |
433 | int voice; | |
434 | ||
435 | key = (chn << 8) | (note + 1); | |
436 | ||
437 | voice = synth_devs[dev]->alloc_voice(dev, chn, note, | |
438 | &synth_devs[dev]->alloc); | |
439 | synth_devs[dev]->alloc.map[voice] = key; | |
440 | synth_devs[dev]->alloc.alloc_times[voice] = | |
441 | synth_devs[dev]->alloc.timestamp++; | |
442 | return voice; | |
443 | } | |
444 | ||
445 | static void seq_chn_voice_event(unsigned char *event_rec) | |
446 | { | |
447 | #define dev event_rec[1] | |
448 | #define cmd event_rec[2] | |
449 | #define chn event_rec[3] | |
450 | #define note event_rec[4] | |
451 | #define parm event_rec[5] | |
452 | ||
453 | int voice = -1; | |
454 | ||
455 | if ((int) dev > max_synthdev || synth_devs[dev] == NULL) | |
456 | return; | |
457 | if (!(synth_open_mask & (1 << dev))) | |
458 | return; | |
459 | if (!synth_devs[dev]) | |
460 | return; | |
461 | ||
462 | if (seq_mode == SEQ_2) | |
463 | { | |
464 | if (synth_devs[dev]->alloc_voice) | |
465 | voice = find_voice(dev, chn, note); | |
466 | ||
467 | if (cmd == MIDI_NOTEON && parm == 0) | |
468 | { | |
469 | cmd = MIDI_NOTEOFF; | |
470 | parm = 64; | |
471 | } | |
472 | } | |
473 | ||
474 | switch (cmd) | |
475 | { | |
476 | case MIDI_NOTEON: | |
477 | if (note > 127 && note != 255) /* Not a seq2 feature */ | |
478 | return; | |
479 | ||
480 | if (voice == -1 && seq_mode == SEQ_2 && synth_devs[dev]->alloc_voice) | |
481 | { | |
482 | /* Internal synthesizer (FM, GUS, etc) */ | |
483 | voice = alloc_voice(dev, chn, note); | |
484 | } | |
485 | if (voice == -1) | |
486 | voice = chn; | |
487 | ||
488 | if (seq_mode == SEQ_2 && (int) dev < num_synths) | |
489 | { | |
490 | /* | |
491 | * The MIDI channel 10 is a percussive channel. Use the note | |
492 | * number to select the proper patch (128 to 255) to play. | |
493 | */ | |
494 | ||
495 | if (chn == 9) | |
496 | { | |
497 | synth_devs[dev]->set_instr(dev, voice, 128 + note); | |
498 | synth_devs[dev]->chn_info[chn].pgm_num = 128 + note; | |
499 | } | |
500 | synth_devs[dev]->setup_voice(dev, voice, chn); | |
501 | } | |
502 | synth_devs[dev]->start_note(dev, voice, note, parm); | |
503 | break; | |
504 | ||
505 | case MIDI_NOTEOFF: | |
506 | if (voice == -1) | |
507 | voice = chn; | |
508 | synth_devs[dev]->kill_note(dev, voice, note, parm); | |
509 | break; | |
510 | ||
511 | case MIDI_KEY_PRESSURE: | |
512 | if (voice == -1) | |
513 | voice = chn; | |
514 | synth_devs[dev]->aftertouch(dev, voice, parm); | |
515 | break; | |
516 | ||
517 | default:; | |
518 | } | |
519 | #undef dev | |
520 | #undef cmd | |
521 | #undef chn | |
522 | #undef note | |
523 | #undef parm | |
524 | } | |
525 | ||
526 | ||
527 | static void seq_chn_common_event(unsigned char *event_rec) | |
528 | { | |
529 | unsigned char dev = event_rec[1]; | |
530 | unsigned char cmd = event_rec[2]; | |
531 | unsigned char chn = event_rec[3]; | |
532 | unsigned char p1 = event_rec[4]; | |
533 | ||
534 | /* unsigned char p2 = event_rec[5]; */ | |
535 | unsigned short w14 = *(short *) &event_rec[6]; | |
536 | ||
537 | if ((int) dev > max_synthdev || synth_devs[dev] == NULL) | |
538 | return; | |
539 | if (!(synth_open_mask & (1 << dev))) | |
540 | return; | |
541 | if (!synth_devs[dev]) | |
542 | return; | |
543 | ||
544 | switch (cmd) | |
545 | { | |
546 | case MIDI_PGM_CHANGE: | |
547 | if (seq_mode == SEQ_2) | |
548 | { | |
549 | synth_devs[dev]->chn_info[chn].pgm_num = p1; | |
550 | if ((int) dev >= num_synths) | |
551 | synth_devs[dev]->set_instr(dev, chn, p1); | |
552 | } | |
553 | else | |
554 | synth_devs[dev]->set_instr(dev, chn, p1); | |
555 | ||
556 | break; | |
557 | ||
558 | case MIDI_CTL_CHANGE: | |
559 | if (seq_mode == SEQ_2) | |
560 | { | |
561 | if (chn > 15 || p1 > 127) | |
562 | break; | |
563 | ||
564 | synth_devs[dev]->chn_info[chn].controllers[p1] = w14 & 0x7f; | |
565 | ||
566 | if (p1 < 32) /* Setting MSB should clear LSB to 0 */ | |
567 | synth_devs[dev]->chn_info[chn].controllers[p1 + 32] = 0; | |
568 | ||
569 | if ((int) dev < num_synths) | |
570 | { | |
571 | int val = w14 & 0x7f; | |
572 | int i, key; | |
573 | ||
574 | if (p1 < 64) /* Combine MSB and LSB */ | |
575 | { | |
576 | val = ((synth_devs[dev]-> | |
577 | chn_info[chn].controllers[p1 & ~32] & 0x7f) << 7) | |
578 | | (synth_devs[dev]-> | |
579 | chn_info[chn].controllers[p1 | 32] & 0x7f); | |
580 | p1 &= ~32; | |
581 | } | |
582 | /* Handle all playing notes on this channel */ | |
583 | ||
584 | key = ((int) chn << 8); | |
585 | ||
586 | for (i = 0; i < synth_devs[dev]->alloc.max_voice; i++) | |
587 | if ((synth_devs[dev]->alloc.map[i] & 0xff00) == key) | |
588 | synth_devs[dev]->controller(dev, i, p1, val); | |
589 | } | |
590 | else | |
591 | synth_devs[dev]->controller(dev, chn, p1, w14); | |
592 | } | |
593 | else /* Mode 1 */ | |
594 | synth_devs[dev]->controller(dev, chn, p1, w14); | |
595 | break; | |
596 | ||
597 | case MIDI_PITCH_BEND: | |
598 | if (seq_mode == SEQ_2) | |
599 | { | |
600 | synth_devs[dev]->chn_info[chn].bender_value = w14; | |
601 | ||
602 | if ((int) dev < num_synths) | |
603 | { | |
604 | /* Handle all playing notes on this channel */ | |
605 | int i, key; | |
606 | ||
607 | key = (chn << 8); | |
608 | ||
609 | for (i = 0; i < synth_devs[dev]->alloc.max_voice; i++) | |
610 | if ((synth_devs[dev]->alloc.map[i] & 0xff00) == key) | |
611 | synth_devs[dev]->bender(dev, i, w14); | |
612 | } | |
613 | else | |
614 | synth_devs[dev]->bender(dev, chn, w14); | |
615 | } | |
616 | else /* MODE 1 */ | |
617 | synth_devs[dev]->bender(dev, chn, w14); | |
618 | break; | |
619 | ||
620 | default:; | |
621 | } | |
622 | } | |
623 | ||
624 | static int seq_timing_event(unsigned char *event_rec) | |
625 | { | |
626 | unsigned char cmd = event_rec[1]; | |
627 | unsigned int parm = *(int *) &event_rec[4]; | |
628 | ||
629 | if (seq_mode == SEQ_2) | |
630 | { | |
631 | int ret; | |
632 | ||
633 | if ((ret = tmr->event(tmr_no, event_rec)) == TIMER_ARMED) | |
634 | if ((SEQ_MAX_QUEUE - qlen) >= output_threshold) | |
635 | wake_up(&seq_sleeper); | |
636 | return ret; | |
637 | } | |
638 | switch (cmd) | |
639 | { | |
640 | case TMR_WAIT_REL: | |
641 | parm += prev_event_time; | |
642 | ||
643 | /* | |
644 | * NOTE! No break here. Execution of TMR_WAIT_REL continues in the | |
645 | * next case (TMR_WAIT_ABS) | |
646 | */ | |
647 | ||
648 | case TMR_WAIT_ABS: | |
649 | if (parm > 0) | |
650 | { | |
651 | long time; | |
652 | ||
653 | time = parm; | |
654 | prev_event_time = time; | |
655 | ||
656 | seq_playing = 1; | |
657 | request_sound_timer(time); | |
658 | ||
659 | if ((SEQ_MAX_QUEUE - qlen) >= output_threshold) | |
660 | wake_up(&seq_sleeper); | |
661 | return TIMER_ARMED; | |
662 | } | |
663 | break; | |
664 | ||
665 | case TMR_START: | |
666 | seq_time = jiffies; | |
667 | prev_input_time = 0; | |
668 | prev_event_time = 0; | |
669 | break; | |
670 | ||
671 | case TMR_STOP: | |
672 | break; | |
673 | ||
674 | case TMR_CONTINUE: | |
675 | break; | |
676 | ||
677 | case TMR_TEMPO: | |
678 | break; | |
679 | ||
680 | case TMR_ECHO: | |
681 | if (seq_mode == SEQ_2) | |
682 | seq_copy_to_input(event_rec, 8); | |
683 | else | |
684 | { | |
685 | parm = (parm << 8 | SEQ_ECHO); | |
686 | seq_copy_to_input((unsigned char *) &parm, 4); | |
687 | } | |
688 | break; | |
689 | ||
690 | default:; | |
691 | } | |
692 | ||
693 | return TIMER_NOT_ARMED; | |
694 | } | |
695 | ||
696 | static void seq_local_event(unsigned char *event_rec) | |
697 | { | |
698 | unsigned char cmd = event_rec[1]; | |
699 | unsigned int parm = *((unsigned int *) &event_rec[4]); | |
700 | ||
701 | switch (cmd) | |
702 | { | |
703 | case LOCL_STARTAUDIO: | |
704 | DMAbuf_start_devices(parm); | |
705 | break; | |
706 | ||
707 | default:; | |
708 | } | |
709 | } | |
710 | ||
711 | static void seq_sysex_message(unsigned char *event_rec) | |
712 | { | |
37f1e984 | 713 | unsigned int dev = event_rec[1]; |
1da177e4 LT |
714 | int i, l = 0; |
715 | unsigned char *buf = &event_rec[2]; | |
716 | ||
37f1e984 | 717 | if (dev > max_synthdev) |
1da177e4 LT |
718 | return; |
719 | if (!(synth_open_mask & (1 << dev))) | |
720 | return; | |
721 | if (!synth_devs[dev]) | |
722 | return; | |
723 | ||
724 | l = 0; | |
725 | for (i = 0; i < 6 && buf[i] != 0xff; i++) | |
726 | l = i + 1; | |
727 | ||
728 | if (!synth_devs[dev]->send_sysex) | |
729 | return; | |
730 | if (l > 0) | |
731 | synth_devs[dev]->send_sysex(dev, buf, l); | |
732 | } | |
733 | ||
734 | static int play_event(unsigned char *q) | |
735 | { | |
736 | /* | |
737 | * NOTE! This routine returns | |
738 | * 0 = normal event played. | |
739 | * 1 = Timer armed. Suspend playback until timer callback. | |
740 | * 2 = MIDI output buffer full. Restore queue and suspend until timer | |
741 | */ | |
742 | unsigned int *delay; | |
743 | ||
744 | switch (q[0]) | |
745 | { | |
746 | case SEQ_NOTEOFF: | |
747 | if (synth_open_mask & (1 << 0)) | |
748 | if (synth_devs[0]) | |
749 | synth_devs[0]->kill_note(0, q[1], 255, q[3]); | |
750 | break; | |
751 | ||
752 | case SEQ_NOTEON: | |
753 | if (q[4] < 128 || q[4] == 255) | |
754 | if (synth_open_mask & (1 << 0)) | |
755 | if (synth_devs[0]) | |
756 | synth_devs[0]->start_note(0, q[1], q[2], q[3]); | |
757 | break; | |
758 | ||
759 | case SEQ_WAIT: | |
760 | delay = (unsigned int *) q; /* | |
761 | * Bytes 1 to 3 are containing the * | |
762 | * delay in 'ticks' | |
763 | */ | |
764 | *delay = (*delay >> 8) & 0xffffff; | |
765 | ||
766 | if (*delay > 0) | |
767 | { | |
768 | long time; | |
769 | ||
770 | seq_playing = 1; | |
771 | time = *delay; | |
772 | prev_event_time = time; | |
773 | ||
774 | request_sound_timer(time); | |
775 | ||
776 | if ((SEQ_MAX_QUEUE - qlen) >= output_threshold) | |
777 | wake_up(&seq_sleeper); | |
778 | /* | |
779 | * The timer is now active and will reinvoke this function | |
780 | * after the timer expires. Return to the caller now. | |
781 | */ | |
782 | return 1; | |
783 | } | |
784 | break; | |
785 | ||
786 | case SEQ_PGMCHANGE: | |
787 | if (synth_open_mask & (1 << 0)) | |
788 | if (synth_devs[0]) | |
789 | synth_devs[0]->set_instr(0, q[1], q[2]); | |
790 | break; | |
791 | ||
792 | case SEQ_SYNCTIMER: /* | |
793 | * Reset timer | |
794 | */ | |
795 | seq_time = jiffies; | |
796 | prev_input_time = 0; | |
797 | prev_event_time = 0; | |
798 | break; | |
799 | ||
800 | case SEQ_MIDIPUTC: /* | |
801 | * Put a midi character | |
802 | */ | |
803 | if (midi_opened[q[2]]) | |
804 | { | |
805 | int dev; | |
806 | ||
807 | dev = q[2]; | |
808 | ||
809 | if (dev < 0 || dev >= num_midis || midi_devs[dev] == NULL) | |
810 | break; | |
811 | ||
812 | if (!midi_devs[dev]->outputc(dev, q[1])) | |
813 | { | |
814 | /* | |
815 | * Output FIFO is full. Wait one timer cycle and try again. | |
816 | */ | |
817 | ||
818 | seq_playing = 1; | |
819 | request_sound_timer(-1); | |
820 | return 2; | |
821 | } | |
822 | else | |
823 | midi_written[dev] = 1; | |
824 | } | |
825 | break; | |
826 | ||
827 | case SEQ_ECHO: | |
828 | seq_copy_to_input(q, 4); /* | |
829 | * Echo back to the process | |
830 | */ | |
831 | break; | |
832 | ||
833 | case SEQ_PRIVATE: | |
834 | if ((int) q[1] < max_synthdev) | |
835 | synth_devs[q[1]]->hw_control(q[1], q); | |
836 | break; | |
837 | ||
838 | case SEQ_EXTENDED: | |
839 | extended_event(q); | |
840 | break; | |
841 | ||
842 | case EV_CHN_VOICE: | |
843 | seq_chn_voice_event(q); | |
844 | break; | |
845 | ||
846 | case EV_CHN_COMMON: | |
847 | seq_chn_common_event(q); | |
848 | break; | |
849 | ||
850 | case EV_TIMING: | |
851 | if (seq_timing_event(q) == TIMER_ARMED) | |
852 | { | |
853 | return 1; | |
854 | } | |
855 | break; | |
856 | ||
857 | case EV_SEQ_LOCAL: | |
858 | seq_local_event(q); | |
859 | break; | |
860 | ||
861 | case EV_SYSEX: | |
862 | seq_sysex_message(q); | |
863 | break; | |
864 | ||
865 | default:; | |
866 | } | |
867 | return 0; | |
868 | } | |
869 | ||
870 | /* called also as timer in irq context */ | |
871 | static void seq_startplay(void) | |
872 | { | |
873 | int this_one, action; | |
874 | unsigned long flags; | |
875 | ||
876 | while (qlen > 0) | |
877 | { | |
878 | ||
879 | spin_lock_irqsave(&lock,flags); | |
880 | qhead = ((this_one = qhead) + 1) % SEQ_MAX_QUEUE; | |
881 | qlen--; | |
882 | spin_unlock_irqrestore(&lock,flags); | |
883 | ||
884 | seq_playing = 1; | |
885 | ||
886 | if ((action = play_event(&queue[this_one * EV_SZ]))) | |
887 | { /* Suspend playback. Next timer routine invokes this routine again */ | |
888 | if (action == 2) | |
889 | { | |
890 | qlen++; | |
891 | qhead = this_one; | |
892 | } | |
893 | return; | |
894 | } | |
895 | } | |
896 | ||
897 | seq_playing = 0; | |
898 | ||
899 | if ((SEQ_MAX_QUEUE - qlen) >= output_threshold) | |
900 | wake_up(&seq_sleeper); | |
901 | } | |
902 | ||
903 | static void reset_controllers(int dev, unsigned char *controller, int update_dev) | |
904 | { | |
905 | int i; | |
906 | for (i = 0; i < 128; i++) | |
907 | controller[i] = ctrl_def_values[i]; | |
908 | } | |
909 | ||
910 | static void setup_mode2(void) | |
911 | { | |
912 | int dev; | |
913 | ||
914 | max_synthdev = num_synths; | |
915 | ||
916 | for (dev = 0; dev < num_midis; dev++) | |
917 | { | |
918 | if (midi_devs[dev] && midi_devs[dev]->converter != NULL) | |
919 | { | |
920 | synth_devs[max_synthdev++] = midi_devs[dev]->converter; | |
921 | } | |
922 | } | |
923 | ||
924 | for (dev = 0; dev < max_synthdev; dev++) | |
925 | { | |
926 | int chn; | |
927 | ||
928 | synth_devs[dev]->sysex_ptr = 0; | |
929 | synth_devs[dev]->emulation = 0; | |
930 | ||
931 | for (chn = 0; chn < 16; chn++) | |
932 | { | |
933 | synth_devs[dev]->chn_info[chn].pgm_num = 0; | |
934 | reset_controllers(dev, | |
935 | synth_devs[dev]->chn_info[chn].controllers,0); | |
936 | synth_devs[dev]->chn_info[chn].bender_value = (1 << 7); /* Neutral */ | |
937 | synth_devs[dev]->chn_info[chn].bender_range = 200; | |
938 | } | |
939 | } | |
940 | max_mididev = 0; | |
941 | seq_mode = SEQ_2; | |
942 | } | |
943 | ||
944 | int sequencer_open(int dev, struct file *file) | |
945 | { | |
946 | int retval, mode, i; | |
947 | int level, tmp; | |
948 | ||
949 | if (!sequencer_ok) | |
950 | sequencer_init(); | |
951 | ||
952 | level = ((dev & 0x0f) == SND_DEV_SEQ2) ? 2 : 1; | |
953 | ||
954 | dev = dev >> 4; | |
955 | mode = translate_mode(file); | |
956 | ||
957 | DEB(printk("sequencer_open(dev=%d)\n", dev)); | |
958 | ||
959 | if (!sequencer_ok) | |
960 | { | |
961 | /* printk("Sound card: sequencer not initialized\n");*/ | |
962 | return -ENXIO; | |
963 | } | |
964 | if (dev) /* Patch manager device (obsolete) */ | |
965 | return -ENXIO; | |
966 | ||
967 | if(synth_devs[dev] == NULL) | |
968 | request_module("synth0"); | |
969 | ||
970 | if (mode == OPEN_READ) | |
971 | { | |
972 | if (!num_midis) | |
973 | { | |
974 | /*printk("Sequencer: No MIDI devices. Input not possible\n");*/ | |
975 | sequencer_busy = 0; | |
976 | return -ENXIO; | |
977 | } | |
978 | } | |
979 | if (sequencer_busy) | |
980 | { | |
981 | return -EBUSY; | |
982 | } | |
983 | sequencer_busy = 1; | |
984 | obsolete_api_used = 0; | |
985 | ||
986 | max_mididev = num_midis; | |
987 | max_synthdev = num_synths; | |
988 | pre_event_timeout = MAX_SCHEDULE_TIMEOUT; | |
989 | seq_mode = SEQ_1; | |
990 | ||
991 | if (pending_timer != -1) | |
992 | { | |
993 | tmr_no = pending_timer; | |
994 | pending_timer = -1; | |
995 | } | |
996 | if (tmr_no == -1) /* Not selected yet */ | |
997 | { | |
998 | int i, best; | |
999 | ||
1000 | best = -1; | |
1001 | for (i = 0; i < num_sound_timers; i++) | |
1002 | if (sound_timer_devs[i] && sound_timer_devs[i]->priority > best) | |
1003 | { | |
1004 | tmr_no = i; | |
1005 | best = sound_timer_devs[i]->priority; | |
1006 | } | |
1007 | if (tmr_no == -1) /* Should not be */ | |
1008 | tmr_no = 0; | |
1009 | } | |
1010 | tmr = sound_timer_devs[tmr_no]; | |
1011 | ||
1012 | if (level == 2) | |
1013 | { | |
1014 | if (tmr == NULL) | |
1015 | { | |
1016 | /*printk("sequencer: No timer for level 2\n");*/ | |
1017 | sequencer_busy = 0; | |
1018 | return -ENXIO; | |
1019 | } | |
1020 | setup_mode2(); | |
1021 | } | |
1022 | if (!max_synthdev && !max_mididev) | |
1023 | { | |
1024 | sequencer_busy=0; | |
1025 | return -ENXIO; | |
1026 | } | |
1027 | ||
1028 | synth_open_mask = 0; | |
1029 | ||
1030 | for (i = 0; i < max_mididev; i++) | |
1031 | { | |
1032 | midi_opened[i] = 0; | |
1033 | midi_written[i] = 0; | |
1034 | } | |
1035 | ||
1036 | for (i = 0; i < max_synthdev; i++) | |
1037 | { | |
1038 | if (synth_devs[i]==NULL) | |
1039 | continue; | |
1040 | ||
1041 | if (!try_module_get(synth_devs[i]->owner)) | |
1042 | continue; | |
1043 | ||
1044 | if ((tmp = synth_devs[i]->open(i, mode)) < 0) | |
1045 | { | |
1046 | printk(KERN_WARNING "Sequencer: Warning! Cannot open synth device #%d (%d)\n", i, tmp); | |
1047 | if (synth_devs[i]->midi_dev) | |
1048 | printk(KERN_WARNING "(Maps to MIDI dev #%d)\n", synth_devs[i]->midi_dev); | |
1049 | } | |
1050 | else | |
1051 | { | |
1052 | synth_open_mask |= (1 << i); | |
1053 | if (synth_devs[i]->midi_dev) | |
1054 | midi_opened[synth_devs[i]->midi_dev] = 1; | |
1055 | } | |
1056 | } | |
1057 | ||
1058 | seq_time = jiffies; | |
1059 | ||
1060 | prev_input_time = 0; | |
1061 | prev_event_time = 0; | |
1062 | ||
1063 | if (seq_mode == SEQ_1 && (mode == OPEN_READ || mode == OPEN_READWRITE)) | |
1064 | { | |
1065 | /* | |
1066 | * Initialize midi input devices | |
1067 | */ | |
1068 | ||
1069 | for (i = 0; i < max_mididev; i++) | |
1070 | if (!midi_opened[i] && midi_devs[i]) | |
1071 | { | |
1072 | if (!try_module_get(midi_devs[i]->owner)) | |
1073 | continue; | |
1074 | ||
1075 | if ((retval = midi_devs[i]->open(i, mode, | |
1076 | sequencer_midi_input, sequencer_midi_output)) >= 0) | |
1077 | { | |
1078 | midi_opened[i] = 1; | |
1079 | } | |
1080 | } | |
1081 | } | |
1082 | ||
1083 | if (seq_mode == SEQ_2) { | |
1084 | if (try_module_get(tmr->owner)) | |
1085 | tmr->open(tmr_no, seq_mode); | |
1086 | } | |
1087 | ||
1088 | init_waitqueue_head(&seq_sleeper); | |
1089 | init_waitqueue_head(&midi_sleeper); | |
1090 | output_threshold = SEQ_MAX_QUEUE / 2; | |
1091 | ||
1092 | return 0; | |
1093 | } | |
1094 | ||
1095 | static void seq_drain_midi_queues(void) | |
1096 | { | |
1097 | int i, n; | |
1098 | ||
1099 | /* | |
1100 | * Give the Midi drivers time to drain their output queues | |
1101 | */ | |
1102 | ||
1103 | n = 1; | |
1104 | ||
1105 | while (!signal_pending(current) && n) | |
1106 | { | |
1107 | n = 0; | |
1108 | ||
1109 | for (i = 0; i < max_mididev; i++) | |
1110 | if (midi_opened[i] && midi_written[i]) | |
1111 | if (midi_devs[i]->buffer_status != NULL) | |
1112 | if (midi_devs[i]->buffer_status(i)) | |
1113 | n++; | |
1114 | ||
1115 | /* | |
1116 | * Let's have a delay | |
1117 | */ | |
1118 | ||
1119 | if (n) | |
1120 | interruptible_sleep_on_timeout(&seq_sleeper, | |
1121 | HZ/10); | |
1122 | } | |
1123 | } | |
1124 | ||
1125 | void sequencer_release(int dev, struct file *file) | |
1126 | { | |
1127 | int i; | |
1128 | int mode = translate_mode(file); | |
1129 | ||
1130 | dev = dev >> 4; | |
1131 | ||
1132 | DEB(printk("sequencer_release(dev=%d)\n", dev)); | |
1133 | ||
1134 | /* | |
1135 | * Wait until the queue is empty (if we don't have nonblock) | |
1136 | */ | |
1137 | ||
1138 | if (mode != OPEN_READ && !(file->f_flags & O_NONBLOCK)) | |
1139 | { | |
1140 | while (!signal_pending(current) && qlen > 0) | |
1141 | { | |
1142 | seq_sync(); | |
1143 | interruptible_sleep_on_timeout(&seq_sleeper, | |
1144 | 3*HZ); | |
1145 | /* Extra delay */ | |
1146 | } | |
1147 | } | |
1148 | ||
1149 | if (mode != OPEN_READ) | |
1150 | seq_drain_midi_queues(); /* | |
1151 | * Ensure the output queues are empty | |
1152 | */ | |
1153 | seq_reset(); | |
1154 | if (mode != OPEN_READ) | |
1155 | seq_drain_midi_queues(); /* | |
1156 | * Flush the all notes off messages | |
1157 | */ | |
1158 | ||
1159 | for (i = 0; i < max_synthdev; i++) | |
1160 | { | |
1161 | if (synth_open_mask & (1 << i)) /* | |
1162 | * Actually opened | |
1163 | */ | |
1164 | if (synth_devs[i]) | |
1165 | { | |
1166 | synth_devs[i]->close(i); | |
1167 | ||
1168 | module_put(synth_devs[i]->owner); | |
1169 | ||
1170 | if (synth_devs[i]->midi_dev) | |
1171 | midi_opened[synth_devs[i]->midi_dev] = 0; | |
1172 | } | |
1173 | } | |
1174 | ||
1175 | for (i = 0; i < max_mididev; i++) | |
1176 | { | |
1177 | if (midi_opened[i]) { | |
1178 | midi_devs[i]->close(i); | |
1179 | module_put(midi_devs[i]->owner); | |
1180 | } | |
1181 | } | |
1182 | ||
1183 | if (seq_mode == SEQ_2) { | |
1184 | tmr->close(tmr_no); | |
1185 | module_put(tmr->owner); | |
1186 | } | |
1187 | ||
1188 | if (obsolete_api_used) | |
1189 | printk(KERN_WARNING "/dev/music: Obsolete (4 byte) API was used by %s\n", current->comm); | |
1190 | sequencer_busy = 0; | |
1191 | } | |
1192 | ||
1193 | static int seq_sync(void) | |
1194 | { | |
1195 | if (qlen && !seq_playing && !signal_pending(current)) | |
1196 | seq_startplay(); | |
1197 | ||
1198 | if (qlen > 0) | |
1199 | interruptible_sleep_on_timeout(&seq_sleeper, HZ); | |
1200 | return qlen; | |
1201 | } | |
1202 | ||
1203 | static void midi_outc(int dev, unsigned char data) | |
1204 | { | |
1205 | /* | |
1206 | * NOTE! Calls sleep(). Don't call this from interrupt. | |
1207 | */ | |
1208 | ||
1209 | int n; | |
1210 | unsigned long flags; | |
1211 | ||
1212 | /* | |
1213 | * This routine sends one byte to the Midi channel. | |
1214 | * If the output FIFO is full, it waits until there | |
1215 | * is space in the queue | |
1216 | */ | |
1217 | ||
1218 | n = 3 * HZ; /* Timeout */ | |
1219 | ||
1220 | spin_lock_irqsave(&lock,flags); | |
1221 | while (n && !midi_devs[dev]->outputc(dev, data)) { | |
1222 | interruptible_sleep_on_timeout(&seq_sleeper, HZ/25); | |
1223 | n--; | |
1224 | } | |
1225 | spin_unlock_irqrestore(&lock,flags); | |
1226 | } | |
1227 | ||
1228 | static void seq_reset(void) | |
1229 | { | |
1230 | /* | |
1231 | * NOTE! Calls sleep(). Don't call this from interrupt. | |
1232 | */ | |
1233 | ||
1234 | int i; | |
1235 | int chn; | |
1236 | unsigned long flags; | |
1237 | ||
1238 | sound_stop_timer(); | |
1239 | ||
1240 | seq_time = jiffies; | |
1241 | prev_input_time = 0; | |
1242 | prev_event_time = 0; | |
1243 | ||
1244 | qlen = qhead = qtail = 0; | |
1245 | iqlen = iqhead = iqtail = 0; | |
1246 | ||
1247 | for (i = 0; i < max_synthdev; i++) | |
1248 | if (synth_open_mask & (1 << i)) | |
1249 | if (synth_devs[i]) | |
1250 | synth_devs[i]->reset(i); | |
1251 | ||
1252 | if (seq_mode == SEQ_2) | |
1253 | { | |
1254 | for (chn = 0; chn < 16; chn++) | |
1255 | for (i = 0; i < max_synthdev; i++) | |
1256 | if (synth_open_mask & (1 << i)) | |
1257 | if (synth_devs[i]) | |
1258 | { | |
1259 | synth_devs[i]->controller(i, chn, 123, 0); /* All notes off */ | |
1260 | synth_devs[i]->controller(i, chn, 121, 0); /* Reset all ctl */ | |
1261 | synth_devs[i]->bender(i, chn, 1 << 13); /* Bender off */ | |
1262 | } | |
1263 | } | |
1264 | else /* seq_mode == SEQ_1 */ | |
1265 | { | |
1266 | for (i = 0; i < max_mididev; i++) | |
1267 | if (midi_written[i]) /* | |
1268 | * Midi used. Some notes may still be playing | |
1269 | */ | |
1270 | { | |
1271 | /* | |
1272 | * Sending just a ACTIVE SENSING message should be enough to stop all | |
1273 | * playing notes. Since there are devices not recognizing the | |
1274 | * active sensing, we have to send some all notes off messages also. | |
1275 | */ | |
1276 | midi_outc(i, 0xfe); | |
1277 | ||
1278 | for (chn = 0; chn < 16; chn++) | |
1279 | { | |
1280 | midi_outc(i, (unsigned char) (0xb0 + (chn & 0x0f))); /* control change */ | |
1281 | midi_outc(i, 0x7b); /* All notes off */ | |
1282 | midi_outc(i, 0); /* Dummy parameter */ | |
1283 | } | |
1284 | ||
1285 | midi_devs[i]->close(i); | |
1286 | ||
1287 | midi_written[i] = 0; | |
1288 | midi_opened[i] = 0; | |
1289 | } | |
1290 | } | |
1291 | ||
1292 | seq_playing = 0; | |
1293 | ||
1294 | spin_lock_irqsave(&lock,flags); | |
1295 | ||
1296 | if (waitqueue_active(&seq_sleeper)) { | |
1297 | /* printk( "Sequencer Warning: Unexpected sleeping process - Waking up\n"); */ | |
1298 | wake_up(&seq_sleeper); | |
1299 | } | |
1300 | spin_unlock_irqrestore(&lock,flags); | |
1301 | } | |
1302 | ||
1303 | static void seq_panic(void) | |
1304 | { | |
1305 | /* | |
1306 | * This routine is called by the application in case the user | |
1307 | * wants to reset the system to the default state. | |
1308 | */ | |
1309 | ||
1310 | seq_reset(); | |
1311 | ||
1312 | /* | |
1313 | * Since some of the devices don't recognize the active sensing and | |
1314 | * all notes off messages, we have to shut all notes manually. | |
1315 | * | |
1316 | * TO BE IMPLEMENTED LATER | |
1317 | */ | |
1318 | ||
1319 | /* | |
1320 | * Also return the controllers to their default states | |
1321 | */ | |
1322 | } | |
1323 | ||
1324 | int sequencer_ioctl(int dev, struct file *file, unsigned int cmd, void __user *arg) | |
1325 | { | |
1326 | int midi_dev, orig_dev, val, err; | |
1327 | int mode = translate_mode(file); | |
1328 | struct synth_info inf; | |
1329 | struct seq_event_rec event_rec; | |
1330 | unsigned long flags; | |
1331 | int __user *p = arg; | |
1332 | ||
1333 | orig_dev = dev = dev >> 4; | |
1334 | ||
1335 | switch (cmd) | |
1336 | { | |
1337 | case SNDCTL_TMR_TIMEBASE: | |
1338 | case SNDCTL_TMR_TEMPO: | |
1339 | case SNDCTL_TMR_START: | |
1340 | case SNDCTL_TMR_STOP: | |
1341 | case SNDCTL_TMR_CONTINUE: | |
1342 | case SNDCTL_TMR_METRONOME: | |
1343 | case SNDCTL_TMR_SOURCE: | |
1344 | if (seq_mode != SEQ_2) | |
1345 | return -EINVAL; | |
1346 | return tmr->ioctl(tmr_no, cmd, arg); | |
1347 | ||
1348 | case SNDCTL_TMR_SELECT: | |
1349 | if (seq_mode != SEQ_2) | |
1350 | return -EINVAL; | |
1351 | if (get_user(pending_timer, p)) | |
1352 | return -EFAULT; | |
1353 | if (pending_timer < 0 || pending_timer >= num_sound_timers || sound_timer_devs[pending_timer] == NULL) | |
1354 | { | |
1355 | pending_timer = -1; | |
1356 | return -EINVAL; | |
1357 | } | |
1358 | val = pending_timer; | |
1359 | break; | |
1360 | ||
1361 | case SNDCTL_SEQ_PANIC: | |
1362 | seq_panic(); | |
1363 | return -EINVAL; | |
1364 | ||
1365 | case SNDCTL_SEQ_SYNC: | |
1366 | if (mode == OPEN_READ) | |
1367 | return 0; | |
1368 | while (qlen > 0 && !signal_pending(current)) | |
1369 | seq_sync(); | |
1370 | return qlen ? -EINTR : 0; | |
1371 | ||
1372 | case SNDCTL_SEQ_RESET: | |
1373 | seq_reset(); | |
1374 | return 0; | |
1375 | ||
1376 | case SNDCTL_SEQ_TESTMIDI: | |
1377 | if (__get_user(midi_dev, p)) | |
1378 | return -EFAULT; | |
1379 | if (midi_dev < 0 || midi_dev >= max_mididev || !midi_devs[midi_dev]) | |
1380 | return -ENXIO; | |
1381 | ||
1382 | if (!midi_opened[midi_dev] && | |
1383 | (err = midi_devs[midi_dev]->open(midi_dev, mode, sequencer_midi_input, | |
1384 | sequencer_midi_output)) < 0) | |
1385 | return err; | |
1386 | midi_opened[midi_dev] = 1; | |
1387 | return 0; | |
1388 | ||
1389 | case SNDCTL_SEQ_GETINCOUNT: | |
1390 | if (mode == OPEN_WRITE) | |
1391 | return 0; | |
1392 | val = iqlen; | |
1393 | break; | |
1394 | ||
1395 | case SNDCTL_SEQ_GETOUTCOUNT: | |
1396 | if (mode == OPEN_READ) | |
1397 | return 0; | |
1398 | val = SEQ_MAX_QUEUE - qlen; | |
1399 | break; | |
1400 | ||
1401 | case SNDCTL_SEQ_GETTIME: | |
1402 | if (seq_mode == SEQ_2) | |
1403 | return tmr->ioctl(tmr_no, cmd, arg); | |
1404 | val = jiffies - seq_time; | |
1405 | break; | |
1406 | ||
1407 | case SNDCTL_SEQ_CTRLRATE: | |
1408 | /* | |
1409 | * If *arg == 0, just return the current rate | |
1410 | */ | |
1411 | if (seq_mode == SEQ_2) | |
1412 | return tmr->ioctl(tmr_no, cmd, arg); | |
1413 | ||
1414 | if (get_user(val, p)) | |
1415 | return -EFAULT; | |
1416 | if (val != 0) | |
1417 | return -EINVAL; | |
1418 | val = HZ; | |
1419 | break; | |
1420 | ||
1421 | case SNDCTL_SEQ_RESETSAMPLES: | |
1422 | case SNDCTL_SYNTH_REMOVESAMPLE: | |
1423 | case SNDCTL_SYNTH_CONTROL: | |
1424 | if (get_user(dev, p)) | |
1425 | return -EFAULT; | |
1426 | if (dev < 0 || dev >= num_synths || synth_devs[dev] == NULL) | |
1427 | return -ENXIO; | |
1428 | if (!(synth_open_mask & (1 << dev)) && !orig_dev) | |
1429 | return -EBUSY; | |
1430 | return synth_devs[dev]->ioctl(dev, cmd, arg); | |
1431 | ||
1432 | case SNDCTL_SEQ_NRSYNTHS: | |
1433 | val = max_synthdev; | |
1434 | break; | |
1435 | ||
1436 | case SNDCTL_SEQ_NRMIDIS: | |
1437 | val = max_mididev; | |
1438 | break; | |
1439 | ||
1440 | case SNDCTL_SYNTH_MEMAVL: | |
1441 | if (get_user(dev, p)) | |
1442 | return -EFAULT; | |
1443 | if (dev < 0 || dev >= num_synths || synth_devs[dev] == NULL) | |
1444 | return -ENXIO; | |
1445 | if (!(synth_open_mask & (1 << dev)) && !orig_dev) | |
1446 | return -EBUSY; | |
1447 | val = synth_devs[dev]->ioctl(dev, cmd, arg); | |
1448 | break; | |
1449 | ||
1450 | case SNDCTL_FM_4OP_ENABLE: | |
1451 | if (get_user(dev, p)) | |
1452 | return -EFAULT; | |
1453 | if (dev < 0 || dev >= num_synths || synth_devs[dev] == NULL) | |
1454 | return -ENXIO; | |
1455 | if (!(synth_open_mask & (1 << dev))) | |
1456 | return -ENXIO; | |
1457 | synth_devs[dev]->ioctl(dev, cmd, arg); | |
1458 | return 0; | |
1459 | ||
1460 | case SNDCTL_SYNTH_INFO: | |
1461 | if (get_user(dev, &((struct synth_info __user *)arg)->device)) | |
1462 | return -EFAULT; | |
1463 | if (dev < 0 || dev >= max_synthdev) | |
1464 | return -ENXIO; | |
1465 | if (!(synth_open_mask & (1 << dev)) && !orig_dev) | |
1466 | return -EBUSY; | |
1467 | return synth_devs[dev]->ioctl(dev, cmd, arg); | |
1468 | ||
1469 | /* Like SYNTH_INFO but returns ID in the name field */ | |
1470 | case SNDCTL_SYNTH_ID: | |
1471 | if (get_user(dev, &((struct synth_info __user *)arg)->device)) | |
1472 | return -EFAULT; | |
1473 | if (dev < 0 || dev >= max_synthdev) | |
1474 | return -ENXIO; | |
1475 | if (!(synth_open_mask & (1 << dev)) && !orig_dev) | |
1476 | return -EBUSY; | |
1477 | memcpy(&inf, synth_devs[dev]->info, sizeof(inf)); | |
1478 | strlcpy(inf.name, synth_devs[dev]->id, sizeof(inf.name)); | |
1479 | inf.device = dev; | |
1480 | return copy_to_user(arg, &inf, sizeof(inf))?-EFAULT:0; | |
1481 | ||
1482 | case SNDCTL_SEQ_OUTOFBAND: | |
1483 | if (copy_from_user(&event_rec, arg, sizeof(event_rec))) | |
1484 | return -EFAULT; | |
1485 | spin_lock_irqsave(&lock,flags); | |
1486 | play_event(event_rec.arr); | |
1487 | spin_unlock_irqrestore(&lock,flags); | |
1488 | return 0; | |
1489 | ||
1490 | case SNDCTL_MIDI_INFO: | |
1491 | if (get_user(dev, &((struct midi_info __user *)arg)->device)) | |
1492 | return -EFAULT; | |
1493 | if (dev < 0 || dev >= max_mididev || !midi_devs[dev]) | |
1494 | return -ENXIO; | |
1495 | midi_devs[dev]->info.device = dev; | |
1496 | return copy_to_user(arg, &midi_devs[dev]->info, sizeof(struct midi_info))?-EFAULT:0; | |
1497 | ||
1498 | case SNDCTL_SEQ_THRESHOLD: | |
1499 | if (get_user(val, p)) | |
1500 | return -EFAULT; | |
1501 | if (val < 1) | |
1502 | val = 1; | |
1503 | if (val >= SEQ_MAX_QUEUE) | |
1504 | val = SEQ_MAX_QUEUE - 1; | |
1505 | output_threshold = val; | |
1506 | return 0; | |
1507 | ||
1508 | case SNDCTL_MIDI_PRETIME: | |
1509 | if (get_user(val, p)) | |
1510 | return -EFAULT; | |
1511 | if (val < 0) | |
1512 | val = 0; | |
1513 | val = (HZ * val) / 10; | |
1514 | pre_event_timeout = val; | |
1515 | break; | |
1516 | ||
1517 | default: | |
1518 | if (mode == OPEN_READ) | |
1519 | return -EIO; | |
1520 | if (!synth_devs[0]) | |
1521 | return -ENXIO; | |
1522 | if (!(synth_open_mask & (1 << 0))) | |
1523 | return -ENXIO; | |
1524 | if (!synth_devs[0]->ioctl) | |
1525 | return -EINVAL; | |
1526 | return synth_devs[0]->ioctl(0, cmd, arg); | |
1527 | } | |
1528 | return put_user(val, p); | |
1529 | } | |
1530 | ||
1531 | /* No kernel lock - we're using the global irq lock here */ | |
1532 | unsigned int sequencer_poll(int dev, struct file *file, poll_table * wait) | |
1533 | { | |
1534 | unsigned long flags; | |
1535 | unsigned int mask = 0; | |
1536 | ||
1537 | dev = dev >> 4; | |
1538 | ||
1539 | spin_lock_irqsave(&lock,flags); | |
1540 | /* input */ | |
1541 | poll_wait(file, &midi_sleeper, wait); | |
1542 | if (iqlen) | |
1543 | mask |= POLLIN | POLLRDNORM; | |
1544 | ||
1545 | /* output */ | |
1546 | poll_wait(file, &seq_sleeper, wait); | |
1547 | if ((SEQ_MAX_QUEUE - qlen) >= output_threshold) | |
1548 | mask |= POLLOUT | POLLWRNORM; | |
1549 | spin_unlock_irqrestore(&lock,flags); | |
1550 | return mask; | |
1551 | } | |
1552 | ||
1553 | ||
1554 | void sequencer_timer(unsigned long dummy) | |
1555 | { | |
1556 | seq_startplay(); | |
1557 | } | |
ece7f77b | 1558 | EXPORT_SYMBOL(sequencer_timer); |
1da177e4 LT |
1559 | |
1560 | int note_to_freq(int note_num) | |
1561 | { | |
1562 | ||
1563 | /* | |
1564 | * This routine converts a midi note to a frequency (multiplied by 1000) | |
1565 | */ | |
1566 | ||
1567 | int note, octave, note_freq; | |
1568 | static int notes[] = | |
1569 | { | |
1570 | 261632, 277189, 293671, 311132, 329632, 349232, | |
1571 | 369998, 391998, 415306, 440000, 466162, 493880 | |
1572 | }; | |
1573 | ||
1574 | #define BASE_OCTAVE 5 | |
1575 | ||
1576 | octave = note_num / 12; | |
1577 | note = note_num % 12; | |
1578 | ||
1579 | note_freq = notes[note]; | |
1580 | ||
1581 | if (octave < BASE_OCTAVE) | |
1582 | note_freq >>= (BASE_OCTAVE - octave); | |
1583 | else if (octave > BASE_OCTAVE) | |
1584 | note_freq <<= (octave - BASE_OCTAVE); | |
1585 | ||
1586 | /* | |
1587 | * note_freq >>= 1; | |
1588 | */ | |
1589 | ||
1590 | return note_freq; | |
1591 | } | |
ece7f77b | 1592 | EXPORT_SYMBOL(note_to_freq); |
1da177e4 LT |
1593 | |
1594 | unsigned long compute_finetune(unsigned long base_freq, int bend, int range, | |
1595 | int vibrato_cents) | |
1596 | { | |
1597 | unsigned long amount; | |
1598 | int negative, semitones, cents, multiplier = 1; | |
1599 | ||
1600 | if (!bend) | |
1601 | return base_freq; | |
1602 | if (!range) | |
1603 | return base_freq; | |
1604 | ||
1605 | if (!base_freq) | |
1606 | return base_freq; | |
1607 | ||
1608 | if (range >= 8192) | |
1609 | range = 8192; | |
1610 | ||
1611 | bend = bend * range / 8192; /* Convert to cents */ | |
1612 | bend += vibrato_cents; | |
1613 | ||
1614 | if (!bend) | |
1615 | return base_freq; | |
1616 | ||
1617 | negative = bend < 0 ? 1 : 0; | |
1618 | ||
1619 | if (bend < 0) | |
1620 | bend *= -1; | |
1621 | if (bend > range) | |
1622 | bend = range; | |
1623 | ||
1624 | /* | |
1625 | if (bend > 2399) | |
1626 | bend = 2399; | |
1627 | */ | |
1628 | while (bend > 2399) | |
1629 | { | |
1630 | multiplier *= 4; | |
1631 | bend -= 2400; | |
1632 | } | |
1633 | ||
1634 | semitones = bend / 100; | |
1635 | if (semitones > 99) | |
1636 | semitones = 99; | |
1637 | cents = bend % 100; | |
1638 | ||
1639 | amount = (int) (semitone_tuning[semitones] * multiplier * cent_tuning[cents]) / 10000; | |
1640 | ||
1641 | if (negative) | |
1642 | return (base_freq * 10000) / amount; /* Bend down */ | |
1643 | else | |
1644 | return (base_freq * amount) / 10000; /* Bend up */ | |
1645 | } | |
ece7f77b | 1646 | EXPORT_SYMBOL(compute_finetune); |
1da177e4 LT |
1647 | |
1648 | void sequencer_init(void) | |
1649 | { | |
1da177e4 LT |
1650 | if (sequencer_ok) |
1651 | return; | |
1da177e4 LT |
1652 | queue = (unsigned char *)vmalloc(SEQ_MAX_QUEUE * EV_SZ); |
1653 | if (queue == NULL) | |
1654 | { | |
1655 | printk(KERN_ERR "sequencer: Can't allocate memory for sequencer output queue\n"); | |
1656 | return; | |
1657 | } | |
1658 | iqueue = (unsigned char *)vmalloc(SEQ_MAX_QUEUE * IEV_SZ); | |
1659 | if (iqueue == NULL) | |
1660 | { | |
1661 | printk(KERN_ERR "sequencer: Can't allocate memory for sequencer input queue\n"); | |
1662 | vfree(queue); | |
1663 | return; | |
1664 | } | |
1665 | sequencer_ok = 1; | |
1666 | } | |
ece7f77b | 1667 | EXPORT_SYMBOL(sequencer_init); |
1da177e4 LT |
1668 | |
1669 | void sequencer_unload(void) | |
1670 | { | |
5a83fddd JJ |
1671 | vfree(queue); |
1672 | vfree(iqueue); | |
1673 | queue = iqueue = NULL; | |
1da177e4 | 1674 | } |