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25#include <linux/export.h>
26#include "emux_voice.h"
27#include <sound/asoundef.h>
28
29
30
31
32
33
34
35
36
37#define LIMITVALUE(x, a, b) do { if ((x) < (a)) (x) = (a); else if ((x) > (b)) (x) = (b); } while (0)
38#define LIMITMAX(x, a) do {if ((x) > (a)) (x) = (a); } while (0)
39
40static int get_zone(struct snd_emux *emu, struct snd_emux_port *port,
41 int *notep, int vel, struct snd_midi_channel *chan,
42 struct snd_sf_zone **table);
43static int get_bank(struct snd_emux_port *port, struct snd_midi_channel *chan);
44static void terminate_note1(struct snd_emux *emu, int note,
45 struct snd_midi_channel *chan, int free);
46static void exclusive_note_off(struct snd_emux *emu, struct snd_emux_port *port,
47 int exclass);
48static void terminate_voice(struct snd_emux *emu, struct snd_emux_voice *vp, int free);
49static void update_voice(struct snd_emux *emu, struct snd_emux_voice *vp, int update);
50static void setup_voice(struct snd_emux_voice *vp);
51static int calc_pan(struct snd_emux_voice *vp);
52static int calc_volume(struct snd_emux_voice *vp);
53static int calc_pitch(struct snd_emux_voice *vp);
54
55
56
57
58
59void
60snd_emux_note_on(void *p, int note, int vel, struct snd_midi_channel *chan)
61{
62 struct snd_emux *emu;
63 int i, key, nvoices;
64 struct snd_emux_voice *vp;
65 struct snd_sf_zone *table[SNDRV_EMUX_MAX_MULTI_VOICES];
66 unsigned long flags;
67 struct snd_emux_port *port;
68
69 port = p;
70 if (snd_BUG_ON(!port || !chan))
71 return;
72
73 emu = port->emu;
74 if (snd_BUG_ON(!emu || !emu->ops.get_voice || !emu->ops.trigger))
75 return;
76
77 key = note;
78 nvoices = get_zone(emu, port, ¬e, vel, chan, table);
79 if (! nvoices)
80 return;
81
82
83 for (i = 0; i < nvoices; i++) {
84 struct snd_sf_zone *zp = table[i];
85 if (zp && zp->v.exclusiveClass)
86 exclusive_note_off(emu, port, zp->v.exclusiveClass);
87 }
88
89#if 0
90
91 terminate_note1(emu, key, chan, 0);
92#endif
93
94 spin_lock_irqsave(&emu->voice_lock, flags);
95 for (i = 0; i < nvoices; i++) {
96
97
98
99
100 if (table[i] == NULL)
101 continue;
102
103 vp = emu->ops.get_voice(emu, port);
104 if (vp == NULL || vp->ch < 0)
105 continue;
106 if (STATE_IS_PLAYING(vp->state))
107 emu->ops.terminate(vp);
108
109 vp->time = emu->use_time++;
110 vp->chan = chan;
111 vp->port = port;
112 vp->key = key;
113 vp->note = note;
114 vp->velocity = vel;
115 vp->zone = table[i];
116 if (vp->zone->sample)
117 vp->block = vp->zone->sample->block;
118 else
119 vp->block = NULL;
120
121 setup_voice(vp);
122
123 vp->state = SNDRV_EMUX_ST_STANDBY;
124 if (emu->ops.prepare) {
125 vp->state = SNDRV_EMUX_ST_OFF;
126 if (emu->ops.prepare(vp) >= 0)
127 vp->state = SNDRV_EMUX_ST_STANDBY;
128 }
129 }
130
131
132 for (i = 0; i < emu->max_voices; i++) {
133 vp = &emu->voices[i];
134 if (vp->state == SNDRV_EMUX_ST_STANDBY &&
135 vp->chan == chan) {
136 emu->ops.trigger(vp);
137 vp->state = SNDRV_EMUX_ST_ON;
138 vp->ontime = jiffies;
139 }
140 }
141 spin_unlock_irqrestore(&emu->voice_lock, flags);
142
143#ifdef SNDRV_EMUX_USE_RAW_EFFECT
144 if (port->port_mode == SNDRV_EMUX_PORT_MODE_OSS_SYNTH) {
145
146 struct snd_emux_effect_table *fx = chan->private;
147 if (fx) {
148 fx->flag[EMUX_FX_SAMPLE_START] = 0;
149 fx->flag[EMUX_FX_COARSE_SAMPLE_START] = 0;
150 }
151 }
152#endif
153}
154
155
156
157
158void
159snd_emux_note_off(void *p, int note, int vel, struct snd_midi_channel *chan)
160{
161 int ch;
162 struct snd_emux *emu;
163 struct snd_emux_voice *vp;
164 unsigned long flags;
165 struct snd_emux_port *port;
166
167 port = p;
168 if (snd_BUG_ON(!port || !chan))
169 return;
170
171 emu = port->emu;
172 if (snd_BUG_ON(!emu || !emu->ops.release))
173 return;
174
175 spin_lock_irqsave(&emu->voice_lock, flags);
176 for (ch = 0; ch < emu->max_voices; ch++) {
177 vp = &emu->voices[ch];
178 if (STATE_IS_PLAYING(vp->state) &&
179 vp->chan == chan && vp->key == note) {
180 vp->state = SNDRV_EMUX_ST_RELEASED;
181 if (vp->ontime == jiffies) {
182
183
184
185
186
187 vp->state = SNDRV_EMUX_ST_PENDING;
188 if (! emu->timer_active) {
189 emu->tlist.expires = jiffies + 1;
190 add_timer(&emu->tlist);
191 emu->timer_active = 1;
192 }
193 } else
194
195 emu->ops.release(vp);
196 }
197 }
198 spin_unlock_irqrestore(&emu->voice_lock, flags);
199}
200
201
202
203
204
205
206void snd_emux_timer_callback(unsigned long data)
207{
208 struct snd_emux *emu = (struct snd_emux *) data;
209 struct snd_emux_voice *vp;
210 unsigned long flags;
211 int ch, do_again = 0;
212
213 spin_lock_irqsave(&emu->voice_lock, flags);
214 for (ch = 0; ch < emu->max_voices; ch++) {
215 vp = &emu->voices[ch];
216 if (vp->state == SNDRV_EMUX_ST_PENDING) {
217 if (vp->ontime == jiffies)
218 do_again++;
219 else {
220 emu->ops.release(vp);
221 vp->state = SNDRV_EMUX_ST_RELEASED;
222 }
223 }
224 }
225 if (do_again) {
226 emu->tlist.expires = jiffies + 1;
227 add_timer(&emu->tlist);
228 emu->timer_active = 1;
229 } else
230 emu->timer_active = 0;
231 spin_unlock_irqrestore(&emu->voice_lock, flags);
232}
233
234
235
236
237void
238snd_emux_key_press(void *p, int note, int vel, struct snd_midi_channel *chan)
239{
240 int ch;
241 struct snd_emux *emu;
242 struct snd_emux_voice *vp;
243 unsigned long flags;
244 struct snd_emux_port *port;
245
246 port = p;
247 if (snd_BUG_ON(!port || !chan))
248 return;
249
250 emu = port->emu;
251 if (snd_BUG_ON(!emu || !emu->ops.update))
252 return;
253
254 spin_lock_irqsave(&emu->voice_lock, flags);
255 for (ch = 0; ch < emu->max_voices; ch++) {
256 vp = &emu->voices[ch];
257 if (vp->state == SNDRV_EMUX_ST_ON &&
258 vp->chan == chan && vp->key == note) {
259 vp->velocity = vel;
260 update_voice(emu, vp, SNDRV_EMUX_UPDATE_VOLUME);
261 }
262 }
263 spin_unlock_irqrestore(&emu->voice_lock, flags);
264}
265
266
267
268
269
270void
271snd_emux_update_channel(struct snd_emux_port *port, struct snd_midi_channel *chan, int update)
272{
273 struct snd_emux *emu;
274 struct snd_emux_voice *vp;
275 int i;
276 unsigned long flags;
277
278 if (! update)
279 return;
280
281 emu = port->emu;
282 if (snd_BUG_ON(!emu || !emu->ops.update))
283 return;
284
285 spin_lock_irqsave(&emu->voice_lock, flags);
286 for (i = 0; i < emu->max_voices; i++) {
287 vp = &emu->voices[i];
288 if (vp->chan == chan)
289 update_voice(emu, vp, update);
290 }
291 spin_unlock_irqrestore(&emu->voice_lock, flags);
292}
293
294
295
296
297void
298snd_emux_update_port(struct snd_emux_port *port, int update)
299{
300 struct snd_emux *emu;
301 struct snd_emux_voice *vp;
302 int i;
303 unsigned long flags;
304
305 if (! update)
306 return;
307
308 emu = port->emu;
309 if (snd_BUG_ON(!emu || !emu->ops.update))
310 return;
311
312 spin_lock_irqsave(&emu->voice_lock, flags);
313 for (i = 0; i < emu->max_voices; i++) {
314 vp = &emu->voices[i];
315 if (vp->port == port)
316 update_voice(emu, vp, update);
317 }
318 spin_unlock_irqrestore(&emu->voice_lock, flags);
319}
320
321
322
323
324
325
326void
327snd_emux_control(void *p, int type, struct snd_midi_channel *chan)
328{
329 struct snd_emux_port *port;
330
331 port = p;
332 if (snd_BUG_ON(!port || !chan))
333 return;
334
335 switch (type) {
336 case MIDI_CTL_MSB_MAIN_VOLUME:
337 case MIDI_CTL_MSB_EXPRESSION:
338 snd_emux_update_channel(port, chan, SNDRV_EMUX_UPDATE_VOLUME);
339 break;
340
341 case MIDI_CTL_MSB_PAN:
342 snd_emux_update_channel(port, chan, SNDRV_EMUX_UPDATE_PAN);
343 break;
344
345 case MIDI_CTL_SOFT_PEDAL:
346#ifdef SNDRV_EMUX_USE_RAW_EFFECT
347
348 if (chan->control[type] >= 64)
349 snd_emux_send_effect(port, chan, EMUX_FX_CUTOFF, -160,
350 EMUX_FX_FLAG_ADD);
351 else
352 snd_emux_send_effect(port, chan, EMUX_FX_CUTOFF, 0,
353 EMUX_FX_FLAG_OFF);
354#endif
355 break;
356
357 case MIDI_CTL_PITCHBEND:
358 snd_emux_update_channel(port, chan, SNDRV_EMUX_UPDATE_PITCH);
359 break;
360
361 case MIDI_CTL_MSB_MODWHEEL:
362 case MIDI_CTL_CHAN_PRESSURE:
363 snd_emux_update_channel(port, chan,
364 SNDRV_EMUX_UPDATE_FMMOD |
365 SNDRV_EMUX_UPDATE_FM2FRQ2);
366 break;
367
368 }
369
370 if (port->chset.midi_mode == SNDRV_MIDI_MODE_XG) {
371 snd_emux_xg_control(port, chan, type);
372 }
373}
374
375
376
377
378
379static void
380terminate_note1(struct snd_emux *emu, int note, struct snd_midi_channel *chan, int free)
381{
382 int i;
383 struct snd_emux_voice *vp;
384 unsigned long flags;
385
386 spin_lock_irqsave(&emu->voice_lock, flags);
387 for (i = 0; i < emu->max_voices; i++) {
388 vp = &emu->voices[i];
389 if (STATE_IS_PLAYING(vp->state) && vp->chan == chan &&
390 vp->key == note)
391 terminate_voice(emu, vp, free);
392 }
393 spin_unlock_irqrestore(&emu->voice_lock, flags);
394}
395
396
397
398
399
400void
401snd_emux_terminate_note(void *p, int note, struct snd_midi_channel *chan)
402{
403 struct snd_emux *emu;
404 struct snd_emux_port *port;
405
406 port = p;
407 if (snd_BUG_ON(!port || !chan))
408 return;
409
410 emu = port->emu;
411 if (snd_BUG_ON(!emu || !emu->ops.terminate))
412 return;
413
414 terminate_note1(emu, note, chan, 1);
415}
416
417
418
419
420
421void
422snd_emux_terminate_all(struct snd_emux *emu)
423{
424 int i;
425 struct snd_emux_voice *vp;
426 unsigned long flags;
427
428 spin_lock_irqsave(&emu->voice_lock, flags);
429 for (i = 0; i < emu->max_voices; i++) {
430 vp = &emu->voices[i];
431 if (STATE_IS_PLAYING(vp->state))
432 terminate_voice(emu, vp, 0);
433 if (vp->state == SNDRV_EMUX_ST_OFF) {
434 if (emu->ops.free_voice)
435 emu->ops.free_voice(vp);
436 if (emu->ops.reset)
437 emu->ops.reset(emu, i);
438 }
439 vp->time = 0;
440 }
441
442 emu->use_time = 0;
443 spin_unlock_irqrestore(&emu->voice_lock, flags);
444}
445
446EXPORT_SYMBOL(snd_emux_terminate_all);
447
448
449
450
451void
452snd_emux_sounds_off_all(struct snd_emux_port *port)
453{
454 int i;
455 struct snd_emux *emu;
456 struct snd_emux_voice *vp;
457 unsigned long flags;
458
459 if (snd_BUG_ON(!port))
460 return;
461 emu = port->emu;
462 if (snd_BUG_ON(!emu || !emu->ops.terminate))
463 return;
464
465 spin_lock_irqsave(&emu->voice_lock, flags);
466 for (i = 0; i < emu->max_voices; i++) {
467 vp = &emu->voices[i];
468 if (STATE_IS_PLAYING(vp->state) &&
469 vp->port == port)
470 terminate_voice(emu, vp, 0);
471 if (vp->state == SNDRV_EMUX_ST_OFF) {
472 if (emu->ops.free_voice)
473 emu->ops.free_voice(vp);
474 if (emu->ops.reset)
475 emu->ops.reset(emu, i);
476 }
477 }
478 spin_unlock_irqrestore(&emu->voice_lock, flags);
479}
480
481
482
483
484
485
486static void
487exclusive_note_off(struct snd_emux *emu, struct snd_emux_port *port, int exclass)
488{
489 struct snd_emux_voice *vp;
490 int i;
491 unsigned long flags;
492
493 spin_lock_irqsave(&emu->voice_lock, flags);
494 for (i = 0; i < emu->max_voices; i++) {
495 vp = &emu->voices[i];
496 if (STATE_IS_PLAYING(vp->state) && vp->port == port &&
497 vp->reg.exclusiveClass == exclass) {
498 terminate_voice(emu, vp, 0);
499 }
500 }
501 spin_unlock_irqrestore(&emu->voice_lock, flags);
502}
503
504
505
506
507
508static void
509terminate_voice(struct snd_emux *emu, struct snd_emux_voice *vp, int free)
510{
511 emu->ops.terminate(vp);
512 vp->time = emu->use_time++;
513 vp->chan = NULL;
514 vp->port = NULL;
515 vp->zone = NULL;
516 vp->block = NULL;
517 vp->state = SNDRV_EMUX_ST_OFF;
518 if (free && emu->ops.free_voice)
519 emu->ops.free_voice(vp);
520}
521
522
523
524
525
526static void
527update_voice(struct snd_emux *emu, struct snd_emux_voice *vp, int update)
528{
529 if (!STATE_IS_PLAYING(vp->state))
530 return;
531
532 if (vp->chan == NULL || vp->port == NULL)
533 return;
534 if (update & SNDRV_EMUX_UPDATE_VOLUME)
535 calc_volume(vp);
536 if (update & SNDRV_EMUX_UPDATE_PITCH)
537 calc_pitch(vp);
538 if (update & SNDRV_EMUX_UPDATE_PAN) {
539 if (! calc_pan(vp) && (update == SNDRV_EMUX_UPDATE_PAN))
540 return;
541 }
542 emu->ops.update(vp, update);
543}
544
545
546#if 0
547
548static unsigned short voltarget[16] = {
549 0xEAC0, 0xE0C8, 0xD740, 0xCE20, 0xC560, 0xBD08, 0xB500, 0xAD58,
550 0xA5F8, 0x9EF0, 0x9830, 0x91C0, 0x8B90, 0x85A8, 0x8000, 0x7A90
551};
552#endif
553
554#define LO_BYTE(v) ((v) & 0xff)
555#define HI_BYTE(v) (((v) >> 8) & 0xff)
556
557
558
559
560
561static void
562setup_voice(struct snd_emux_voice *vp)
563{
564 struct soundfont_voice_parm *parm;
565 int pitch;
566
567
568 vp->reg = vp->zone->v;
569
570#ifdef SNDRV_EMUX_USE_RAW_EFFECT
571 snd_emux_setup_effect(vp);
572#endif
573
574
575 vp->apan = -1;
576 vp->avol = -1;
577 vp->apitch = -1;
578
579 calc_volume(vp);
580 calc_pitch(vp);
581 calc_pan(vp);
582
583 parm = &vp->reg.parm;
584
585
586 if (LO_BYTE(parm->modatkhld) >= 0x80 && parm->moddelay >= 0x8000) {
587 parm->moddelay = 0xbfff;
588 pitch = (HI_BYTE(parm->pefe) << 4) + vp->apitch;
589 if (pitch > 0xffff)
590 pitch = 0xffff;
591
592 vp->ftarget = parm->cutoff + LO_BYTE(parm->pefe);
593 LIMITVALUE(vp->ftarget, 0, 255);
594 vp->ftarget <<= 8;
595 } else {
596 vp->ftarget = parm->cutoff;
597 vp->ftarget <<= 8;
598 pitch = vp->apitch;
599 }
600
601
602 if (pitch != 0xffff) {
603 vp->ptarget = 1 << (pitch >> 12);
604 if (pitch & 0x800) vp->ptarget += (vp->ptarget*0x102e)/0x2710;
605 if (pitch & 0x400) vp->ptarget += (vp->ptarget*0x764)/0x2710;
606 if (pitch & 0x200) vp->ptarget += (vp->ptarget*0x389)/0x2710;
607 vp->ptarget += (vp->ptarget >> 1);
608 if (vp->ptarget > 0xffff) vp->ptarget = 0xffff;
609 } else
610 vp->ptarget = 0xffff;
611
612 if (LO_BYTE(parm->modatkhld) >= 0x80) {
613 parm->modatkhld &= ~0xff;
614 parm->modatkhld |= 0x7f;
615 }
616
617
618 vp->vtarget = 0;
619#if 0
620 if (LO_BYTE(parm->volatkhld) >= 0x80 && parm->voldelay >= 0x8000) {
621 parm->voldelay = 0xbfff;
622 vp->vtarget = voltarget[vp->avol % 0x10] >> (vp->avol >> 4);
623 }
624#endif
625
626 if (LO_BYTE(parm->volatkhld) >= 0x80) {
627 parm->volatkhld &= ~0xff;
628 parm->volatkhld |= 0x7f;
629 }
630}
631
632
633
634
635static unsigned char pan_volumes[256] = {
6360x00,0x03,0x06,0x09,0x0c,0x0f,0x12,0x14,0x17,0x1a,0x1d,0x20,0x22,0x25,0x28,0x2a,
6370x2d,0x30,0x32,0x35,0x37,0x3a,0x3c,0x3f,0x41,0x44,0x46,0x49,0x4b,0x4d,0x50,0x52,
6380x54,0x57,0x59,0x5b,0x5d,0x60,0x62,0x64,0x66,0x68,0x6a,0x6c,0x6f,0x71,0x73,0x75,
6390x77,0x79,0x7b,0x7c,0x7e,0x80,0x82,0x84,0x86,0x88,0x89,0x8b,0x8d,0x8f,0x90,0x92,
6400x94,0x96,0x97,0x99,0x9a,0x9c,0x9e,0x9f,0xa1,0xa2,0xa4,0xa5,0xa7,0xa8,0xaa,0xab,
6410xad,0xae,0xaf,0xb1,0xb2,0xb3,0xb5,0xb6,0xb7,0xb9,0xba,0xbb,0xbc,0xbe,0xbf,0xc0,
6420xc1,0xc2,0xc3,0xc5,0xc6,0xc7,0xc8,0xc9,0xca,0xcb,0xcc,0xcd,0xce,0xcf,0xd0,0xd1,
6430xd2,0xd3,0xd4,0xd5,0xd6,0xd7,0xd7,0xd8,0xd9,0xda,0xdb,0xdc,0xdc,0xdd,0xde,0xdf,
6440xdf,0xe0,0xe1,0xe2,0xe2,0xe3,0xe4,0xe4,0xe5,0xe6,0xe6,0xe7,0xe8,0xe8,0xe9,0xe9,
6450xea,0xeb,0xeb,0xec,0xec,0xed,0xed,0xee,0xee,0xef,0xef,0xf0,0xf0,0xf1,0xf1,0xf1,
6460xf2,0xf2,0xf3,0xf3,0xf3,0xf4,0xf4,0xf5,0xf5,0xf5,0xf6,0xf6,0xf6,0xf7,0xf7,0xf7,
6470xf7,0xf8,0xf8,0xf8,0xf9,0xf9,0xf9,0xf9,0xf9,0xfa,0xfa,0xfa,0xfa,0xfb,0xfb,0xfb,
6480xfb,0xfb,0xfc,0xfc,0xfc,0xfc,0xfc,0xfc,0xfc,0xfd,0xfd,0xfd,0xfd,0xfd,0xfd,0xfd,
6490xfd,0xfe,0xfe,0xfe,0xfe,0xfe,0xfe,0xfe,0xfe,0xfe,0xfe,0xfe,0xfe,0xfe,0xfe,0xfe,
6500xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
6510xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
652};
653
654static int
655calc_pan(struct snd_emux_voice *vp)
656{
657 struct snd_midi_channel *chan = vp->chan;
658 int pan;
659
660
661 if (vp->reg.fixpan > 0)
662 pan = 255 - (int)vp->reg.fixpan * 2;
663 else {
664 pan = chan->control[MIDI_CTL_MSB_PAN] - 64;
665 if (vp->reg.pan >= 0)
666 pan += vp->reg.pan - 64;
667 pan = 127 - (int)pan * 2;
668 }
669 LIMITVALUE(pan, 0, 255);
670
671 if (vp->emu->linear_panning) {
672
673 if (pan != vp->apan) {
674 vp->apan = pan;
675 if (pan == 0)
676 vp->aaux = 0xff;
677 else
678 vp->aaux = (-pan) & 0xff;
679 return 1;
680 } else
681 return 0;
682 } else {
683
684 if (vp->apan != (int)pan_volumes[pan]) {
685 vp->apan = pan_volumes[pan];
686 vp->aaux = pan_volumes[255 - pan];
687 return 1;
688 }
689 return 0;
690 }
691}
692
693
694
695
696
697
698
699
700
701
702
703static unsigned char voltab1[128] = {
704 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63,
705 0x63, 0x2b, 0x29, 0x28, 0x27, 0x26, 0x25, 0x24, 0x23, 0x22,
706 0x21, 0x20, 0x1f, 0x1e, 0x1e, 0x1d, 0x1c, 0x1b, 0x1b, 0x1a,
707 0x19, 0x19, 0x18, 0x17, 0x17, 0x16, 0x16, 0x15, 0x15, 0x14,
708 0x14, 0x13, 0x13, 0x13, 0x12, 0x12, 0x11, 0x11, 0x11, 0x10,
709 0x10, 0x10, 0x0f, 0x0f, 0x0f, 0x0e, 0x0e, 0x0e, 0x0e, 0x0d,
710 0x0d, 0x0d, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0b, 0x0b, 0x0b,
711 0x0b, 0x0a, 0x0a, 0x0a, 0x0a, 0x09, 0x09, 0x09, 0x09, 0x09,
712 0x08, 0x08, 0x08, 0x08, 0x08, 0x07, 0x07, 0x07, 0x07, 0x06,
713 0x06, 0x06, 0x06, 0x06, 0x05, 0x05, 0x05, 0x05, 0x05, 0x04,
714 0x04, 0x04, 0x04, 0x04, 0x03, 0x03, 0x03, 0x03, 0x03, 0x02,
715 0x02, 0x02, 0x02, 0x02, 0x02, 0x01, 0x01, 0x01, 0x01, 0x01,
716 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
717};
718
719static unsigned char voltab2[128] = {
720 0x32, 0x31, 0x30, 0x2f, 0x2e, 0x2d, 0x2c, 0x2b, 0x2a, 0x2a,
721 0x29, 0x28, 0x27, 0x26, 0x25, 0x24, 0x24, 0x23, 0x22, 0x21,
722 0x21, 0x20, 0x1f, 0x1e, 0x1e, 0x1d, 0x1c, 0x1c, 0x1b, 0x1a,
723 0x1a, 0x19, 0x19, 0x18, 0x18, 0x17, 0x16, 0x16, 0x15, 0x15,
724 0x14, 0x14, 0x13, 0x13, 0x13, 0x12, 0x12, 0x11, 0x11, 0x10,
725 0x10, 0x10, 0x0f, 0x0f, 0x0f, 0x0e, 0x0e, 0x0e, 0x0d, 0x0d,
726 0x0d, 0x0c, 0x0c, 0x0c, 0x0b, 0x0b, 0x0b, 0x0b, 0x0a, 0x0a,
727 0x0a, 0x0a, 0x09, 0x09, 0x09, 0x09, 0x09, 0x08, 0x08, 0x08,
728 0x08, 0x08, 0x07, 0x07, 0x07, 0x07, 0x07, 0x06, 0x06, 0x06,
729 0x06, 0x06, 0x06, 0x05, 0x05, 0x05, 0x05, 0x05, 0x05, 0x05,
730 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x03, 0x03, 0x03, 0x03,
731 0x03, 0x03, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x01, 0x01,
732 0x01, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00
733};
734
735static unsigned char expressiontab[128] = {
736 0x7f, 0x6c, 0x62, 0x5a, 0x54, 0x50, 0x4b, 0x48, 0x45, 0x42,
737 0x40, 0x3d, 0x3b, 0x39, 0x38, 0x36, 0x34, 0x33, 0x31, 0x30,
738 0x2f, 0x2d, 0x2c, 0x2b, 0x2a, 0x29, 0x28, 0x27, 0x26, 0x25,
739 0x24, 0x24, 0x23, 0x22, 0x21, 0x21, 0x20, 0x1f, 0x1e, 0x1e,
740 0x1d, 0x1d, 0x1c, 0x1b, 0x1b, 0x1a, 0x1a, 0x19, 0x18, 0x18,
741 0x17, 0x17, 0x16, 0x16, 0x15, 0x15, 0x15, 0x14, 0x14, 0x13,
742 0x13, 0x12, 0x12, 0x11, 0x11, 0x11, 0x10, 0x10, 0x0f, 0x0f,
743 0x0f, 0x0e, 0x0e, 0x0e, 0x0d, 0x0d, 0x0d, 0x0c, 0x0c, 0x0c,
744 0x0b, 0x0b, 0x0b, 0x0a, 0x0a, 0x0a, 0x09, 0x09, 0x09, 0x09,
745 0x08, 0x08, 0x08, 0x07, 0x07, 0x07, 0x07, 0x06, 0x06, 0x06,
746 0x06, 0x05, 0x05, 0x05, 0x04, 0x04, 0x04, 0x04, 0x04, 0x03,
747 0x03, 0x03, 0x03, 0x02, 0x02, 0x02, 0x02, 0x01, 0x01, 0x01,
748 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
749};
750
751
752
753
754
755static int
756calc_volume(struct snd_emux_voice *vp)
757{
758 int vol;
759 int main_vol, expression_vol, master_vol;
760 struct snd_midi_channel *chan = vp->chan;
761 struct snd_emux_port *port = vp->port;
762
763 expression_vol = chan->control[MIDI_CTL_MSB_EXPRESSION];
764 LIMITMAX(vp->velocity, 127);
765 LIMITVALUE(expression_vol, 0, 127);
766 if (port->port_mode == SNDRV_EMUX_PORT_MODE_OSS_SYNTH) {
767
768 main_vol = chan->control[MIDI_CTL_MSB_MAIN_VOLUME];
769 vol = (vp->velocity * main_vol * expression_vol) / (127*127);
770 vol = vol * vp->reg.amplitude / 127;
771
772 LIMITVALUE(vol, 0, 127);
773
774
775 vol = snd_sf_vol_table[vol];
776
777 } else {
778 main_vol = chan->control[MIDI_CTL_MSB_MAIN_VOLUME] * vp->reg.amplitude / 127;
779 LIMITVALUE(main_vol, 0, 127);
780
781 vol = voltab1[main_vol] + voltab2[vp->velocity];
782 vol = (vol * 8) / 3;
783 vol += vp->reg.attenuation;
784 vol += ((0x100 - vol) * expressiontab[expression_vol])/128;
785 }
786
787 master_vol = port->chset.gs_master_volume;
788 LIMITVALUE(master_vol, 0, 127);
789 vol += snd_sf_vol_table[master_vol];
790 vol += port->volume_atten;
791
792#ifdef SNDRV_EMUX_USE_RAW_EFFECT
793 if (chan->private) {
794 struct snd_emux_effect_table *fx = chan->private;
795 vol += fx->val[EMUX_FX_ATTEN];
796 }
797#endif
798
799 LIMITVALUE(vol, 0, 255);
800 if (vp->avol == vol)
801 return 0;
802
803 vp->avol = vol;
804 if (!SF_IS_DRUM_BANK(get_bank(port, chan))
805 && LO_BYTE(vp->reg.parm.volatkhld) < 0x7d) {
806 int atten;
807 if (vp->velocity < 70)
808 atten = 70;
809 else
810 atten = vp->velocity;
811 vp->acutoff = (atten * vp->reg.parm.cutoff + 0xa0) >> 7;
812 } else {
813 vp->acutoff = vp->reg.parm.cutoff;
814 }
815
816 return 1;
817}
818
819
820
821
822
823
824
825
826static int
827calc_pitch(struct snd_emux_voice *vp)
828{
829 struct snd_midi_channel *chan = vp->chan;
830 int offset;
831
832
833 if (vp->reg.fixkey >= 0) {
834 offset = (vp->reg.fixkey - vp->reg.root) * 4096 / 12;
835 } else {
836 offset = (vp->note - vp->reg.root) * 4096 / 12;
837 }
838 offset = (offset * vp->reg.scaleTuning) / 100;
839 offset += vp->reg.tune * 4096 / 1200;
840 if (chan->midi_pitchbend != 0) {
841
842 offset += chan->midi_pitchbend * chan->gm_rpn_pitch_bend_range / 3072;
843 }
844
845
846
847
848
849
850 offset += chan->gm_rpn_coarse_tuning * 4096 / (12 * 128);
851 offset += chan->gm_rpn_fine_tuning / 24;
852
853#ifdef SNDRV_EMUX_USE_RAW_EFFECT
854
855 if (chan->private) {
856 struct snd_emux_effect_table *fx = chan->private;
857 if (fx->flag[EMUX_FX_INIT_PITCH])
858 offset += fx->val[EMUX_FX_INIT_PITCH];
859 }
860#endif
861
862
863 offset += 0xe000 + vp->reg.rate_offset;
864 offset += vp->emu->pitch_shift;
865 LIMITVALUE(offset, 0, 0xffff);
866 if (offset == vp->apitch)
867 return 0;
868 vp->apitch = offset;
869 return 1;
870}
871
872
873
874
875static int
876get_bank(struct snd_emux_port *port, struct snd_midi_channel *chan)
877{
878 int val;
879
880 switch (port->chset.midi_mode) {
881 case SNDRV_MIDI_MODE_XG:
882 val = chan->control[MIDI_CTL_MSB_BANK];
883 if (val == 127)
884 return 128;
885 return chan->control[MIDI_CTL_LSB_BANK];
886
887 case SNDRV_MIDI_MODE_GS:
888 if (chan->drum_channel)
889 return 128;
890
891 return chan->control[MIDI_CTL_MSB_BANK];
892
893 default:
894 if (chan->drum_channel)
895 return 128;
896 return chan->control[MIDI_CTL_MSB_BANK];
897 }
898}
899
900
901
902
903
904static int
905get_zone(struct snd_emux *emu, struct snd_emux_port *port,
906 int *notep, int vel, struct snd_midi_channel *chan,
907 struct snd_sf_zone **table)
908{
909 int preset, bank, def_preset, def_bank;
910
911 bank = get_bank(port, chan);
912 preset = chan->midi_program;
913
914 if (SF_IS_DRUM_BANK(bank)) {
915 def_preset = port->ctrls[EMUX_MD_DEF_DRUM];
916 def_bank = bank;
917 } else {
918 def_preset = preset;
919 def_bank = port->ctrls[EMUX_MD_DEF_BANK];
920 }
921
922 return snd_soundfont_search_zone(emu->sflist, notep, vel, preset, bank,
923 def_preset, def_bank,
924 table, SNDRV_EMUX_MAX_MULTI_VOICES);
925}
926
927
928
929void
930snd_emux_init_voices(struct snd_emux *emu)
931{
932 struct snd_emux_voice *vp;
933 int i;
934 unsigned long flags;
935
936 spin_lock_irqsave(&emu->voice_lock, flags);
937 for (i = 0; i < emu->max_voices; i++) {
938 vp = &emu->voices[i];
939 vp->ch = -1;
940 vp->state = SNDRV_EMUX_ST_OFF;
941 vp->chan = NULL;
942 vp->port = NULL;
943 vp->time = 0;
944 vp->emu = emu;
945 vp->hw = emu->hw;
946 }
947 spin_unlock_irqrestore(&emu->voice_lock, flags);
948}
949
950
951
952void snd_emux_lock_voice(struct snd_emux *emu, int voice)
953{
954 unsigned long flags;
955
956 spin_lock_irqsave(&emu->voice_lock, flags);
957 if (emu->voices[voice].state == SNDRV_EMUX_ST_OFF)
958 emu->voices[voice].state = SNDRV_EMUX_ST_LOCKED;
959 else
960 snd_printk(KERN_WARNING
961 "invalid voice for lock %d (state = %x)\n",
962 voice, emu->voices[voice].state);
963 spin_unlock_irqrestore(&emu->voice_lock, flags);
964}
965
966EXPORT_SYMBOL(snd_emux_lock_voice);
967
968
969
970void snd_emux_unlock_voice(struct snd_emux *emu, int voice)
971{
972 unsigned long flags;
973
974 spin_lock_irqsave(&emu->voice_lock, flags);
975 if (emu->voices[voice].state == SNDRV_EMUX_ST_LOCKED)
976 emu->voices[voice].state = SNDRV_EMUX_ST_OFF;
977 else
978 snd_printk(KERN_WARNING
979 "invalid voice for unlock %d (state = %x)\n",
980 voice, emu->voices[voice].state);
981 spin_unlock_irqrestore(&emu->voice_lock, flags);
982}
983
984EXPORT_SYMBOL(snd_emux_unlock_voice);
985