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Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * Midi synth routines for the Emu8k/Emu10k1 | |
3 | * | |
4 | * Copyright (C) 1999 Steve Ratcliffe | |
5 | * Copyright (c) 1999-2000 Takashi Iwai <tiwai@suse.de> | |
6 | * | |
7 | * Contains code based on awe_wave.c by Takashi Iwai | |
8 | * | |
9 | * This program is free software; you can redistribute it and/or modify | |
10 | * it under the terms of the GNU General Public License as published by | |
11 | * the Free Software Foundation; either version 2 of the License, or | |
12 | * (at your option) any later version. | |
13 | * | |
14 | * This program is distributed in the hope that it will be useful, | |
15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | * GNU General Public License for more details. | |
18 | * | |
19 | * You should have received a copy of the GNU General Public License | |
20 | * along with this program; if not, write to the Free Software | |
21 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
22 | * | |
23 | */ | |
24 | ||
d81a6d71 | 25 | #include <linux/export.h> |
1da177e4 LT |
26 | #include "emux_voice.h" |
27 | #include <sound/asoundef.h> | |
28 | ||
29 | /* | |
30 | * Prototypes | |
31 | */ | |
32 | ||
33 | /* | |
34 | * Ensure a value is between two points | |
35 | * macro evaluates its args more than once, so changed to upper-case. | |
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 | ||
03da312a TI |
40 | static 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); | |
43 | static int get_bank(struct snd_emux_port *port, struct snd_midi_channel *chan); | |
44 | static void terminate_note1(struct snd_emux *emu, int note, | |
45 | struct snd_midi_channel *chan, int free); | |
46 | static void exclusive_note_off(struct snd_emux *emu, struct snd_emux_port *port, | |
47 | int exclass); | |
48 | static void terminate_voice(struct snd_emux *emu, struct snd_emux_voice *vp, int free); | |
49 | static void update_voice(struct snd_emux *emu, struct snd_emux_voice *vp, int update); | |
50 | static void setup_voice(struct snd_emux_voice *vp); | |
51 | static int calc_pan(struct snd_emux_voice *vp); | |
52 | static int calc_volume(struct snd_emux_voice *vp); | |
53 | static int calc_pitch(struct snd_emux_voice *vp); | |
1da177e4 LT |
54 | |
55 | ||
56 | /* | |
57 | * Start a note. | |
58 | */ | |
59 | void | |
03da312a | 60 | snd_emux_note_on(void *p, int note, int vel, struct snd_midi_channel *chan) |
1da177e4 | 61 | { |
03da312a | 62 | struct snd_emux *emu; |
1da177e4 | 63 | int i, key, nvoices; |
03da312a TI |
64 | struct snd_emux_voice *vp; |
65 | struct snd_sf_zone *table[SNDRV_EMUX_MAX_MULTI_VOICES]; | |
1da177e4 | 66 | unsigned long flags; |
03da312a | 67 | struct snd_emux_port *port; |
1da177e4 LT |
68 | |
69 | port = p; | |
5e246b85 TI |
70 | if (snd_BUG_ON(!port || !chan)) |
71 | return; | |
1da177e4 LT |
72 | |
73 | emu = port->emu; | |
5e246b85 TI |
74 | if (snd_BUG_ON(!emu || !emu->ops.get_voice || !emu->ops.trigger)) |
75 | return; | |
1da177e4 LT |
76 | |
77 | key = note; /* remember the original note */ | |
78 | nvoices = get_zone(emu, port, ¬e, vel, chan, table); | |
79 | if (! nvoices) | |
80 | return; | |
81 | ||
82 | /* exclusive note off */ | |
83 | for (i = 0; i < nvoices; i++) { | |
03da312a | 84 | struct snd_sf_zone *zp = table[i]; |
1da177e4 LT |
85 | if (zp && zp->v.exclusiveClass) |
86 | exclusive_note_off(emu, port, zp->v.exclusiveClass); | |
87 | } | |
88 | ||
89 | #if 0 // seems not necessary | |
90 | /* Turn off the same note on the same channel. */ | |
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 | /* set up each voice parameter */ | |
98 | /* at this stage, we don't trigger the voice yet. */ | |
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; | |
1da177e4 LT |
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 | /* start envelope now */ | |
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; /* remember the trigger timing */ | |
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 | /* clear voice position for the next note on this channel */ | |
03da312a | 146 | struct snd_emux_effect_table *fx = chan->private; |
1da177e4 LT |
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 | * Release a note in response to a midi note off. | |
157 | */ | |
158 | void | |
03da312a | 159 | snd_emux_note_off(void *p, int note, int vel, struct snd_midi_channel *chan) |
1da177e4 LT |
160 | { |
161 | int ch; | |
03da312a TI |
162 | struct snd_emux *emu; |
163 | struct snd_emux_voice *vp; | |
1da177e4 | 164 | unsigned long flags; |
03da312a | 165 | struct snd_emux_port *port; |
1da177e4 LT |
166 | |
167 | port = p; | |
5e246b85 TI |
168 | if (snd_BUG_ON(!port || !chan)) |
169 | return; | |
1da177e4 LT |
170 | |
171 | emu = port->emu; | |
5e246b85 TI |
172 | if (snd_BUG_ON(!emu || !emu->ops.release)) |
173 | return; | |
1da177e4 LT |
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) { | |
1da177e4 LT |
180 | vp->state = SNDRV_EMUX_ST_RELEASED; |
181 | if (vp->ontime == jiffies) { | |
182 | /* if note-off is sent too shortly after | |
183 | * note-on, emuX engine cannot produce the sound | |
184 | * correctly. so we'll release this note | |
185 | * a bit later via timer callback. | |
186 | */ | |
187 | vp->state = SNDRV_EMUX_ST_PENDING; | |
188 | if (! emu->timer_active) { | |
abd08352 | 189 | mod_timer(&emu->tlist, jiffies + 1); |
1da177e4 LT |
190 | emu->timer_active = 1; |
191 | } | |
192 | } else | |
193 | /* ok now release the note */ | |
194 | emu->ops.release(vp); | |
195 | } | |
196 | } | |
197 | spin_unlock_irqrestore(&emu->voice_lock, flags); | |
198 | } | |
199 | ||
200 | /* | |
201 | * timer callback | |
202 | * | |
203 | * release the pending note-offs | |
204 | */ | |
205 | void snd_emux_timer_callback(unsigned long data) | |
206 | { | |
03da312a TI |
207 | struct snd_emux *emu = (struct snd_emux *) data; |
208 | struct snd_emux_voice *vp; | |
b32425ac | 209 | unsigned long flags; |
1da177e4 LT |
210 | int ch, do_again = 0; |
211 | ||
b32425ac | 212 | spin_lock_irqsave(&emu->voice_lock, flags); |
1da177e4 LT |
213 | for (ch = 0; ch < emu->max_voices; ch++) { |
214 | vp = &emu->voices[ch]; | |
215 | if (vp->state == SNDRV_EMUX_ST_PENDING) { | |
216 | if (vp->ontime == jiffies) | |
217 | do_again++; /* release this at the next interrupt */ | |
218 | else { | |
219 | emu->ops.release(vp); | |
220 | vp->state = SNDRV_EMUX_ST_RELEASED; | |
221 | } | |
222 | } | |
223 | } | |
224 | if (do_again) { | |
abd08352 | 225 | mod_timer(&emu->tlist, jiffies + 1); |
1da177e4 LT |
226 | emu->timer_active = 1; |
227 | } else | |
228 | emu->timer_active = 0; | |
b32425ac | 229 | spin_unlock_irqrestore(&emu->voice_lock, flags); |
1da177e4 LT |
230 | } |
231 | ||
232 | /* | |
233 | * key pressure change | |
234 | */ | |
235 | void | |
03da312a | 236 | snd_emux_key_press(void *p, int note, int vel, struct snd_midi_channel *chan) |
1da177e4 LT |
237 | { |
238 | int ch; | |
03da312a TI |
239 | struct snd_emux *emu; |
240 | struct snd_emux_voice *vp; | |
1da177e4 | 241 | unsigned long flags; |
03da312a | 242 | struct snd_emux_port *port; |
1da177e4 LT |
243 | |
244 | port = p; | |
5e246b85 TI |
245 | if (snd_BUG_ON(!port || !chan)) |
246 | return; | |
1da177e4 LT |
247 | |
248 | emu = port->emu; | |
5e246b85 TI |
249 | if (snd_BUG_ON(!emu || !emu->ops.update)) |
250 | return; | |
1da177e4 LT |
251 | |
252 | spin_lock_irqsave(&emu->voice_lock, flags); | |
253 | for (ch = 0; ch < emu->max_voices; ch++) { | |
254 | vp = &emu->voices[ch]; | |
255 | if (vp->state == SNDRV_EMUX_ST_ON && | |
256 | vp->chan == chan && vp->key == note) { | |
257 | vp->velocity = vel; | |
258 | update_voice(emu, vp, SNDRV_EMUX_UPDATE_VOLUME); | |
259 | } | |
260 | } | |
261 | spin_unlock_irqrestore(&emu->voice_lock, flags); | |
262 | } | |
263 | ||
264 | ||
265 | /* | |
266 | * Modulate the voices which belong to the channel | |
267 | */ | |
268 | void | |
03da312a | 269 | snd_emux_update_channel(struct snd_emux_port *port, struct snd_midi_channel *chan, int update) |
1da177e4 | 270 | { |
03da312a TI |
271 | struct snd_emux *emu; |
272 | struct snd_emux_voice *vp; | |
1da177e4 LT |
273 | int i; |
274 | unsigned long flags; | |
275 | ||
276 | if (! update) | |
277 | return; | |
278 | ||
279 | emu = port->emu; | |
5e246b85 TI |
280 | if (snd_BUG_ON(!emu || !emu->ops.update)) |
281 | return; | |
1da177e4 LT |
282 | |
283 | spin_lock_irqsave(&emu->voice_lock, flags); | |
284 | for (i = 0; i < emu->max_voices; i++) { | |
285 | vp = &emu->voices[i]; | |
286 | if (vp->chan == chan) | |
287 | update_voice(emu, vp, update); | |
288 | } | |
289 | spin_unlock_irqrestore(&emu->voice_lock, flags); | |
290 | } | |
291 | ||
292 | /* | |
293 | * Modulate all the voices which belong to the port. | |
294 | */ | |
295 | void | |
03da312a | 296 | snd_emux_update_port(struct snd_emux_port *port, int update) |
1da177e4 | 297 | { |
03da312a TI |
298 | struct snd_emux *emu; |
299 | struct snd_emux_voice *vp; | |
1da177e4 LT |
300 | int i; |
301 | unsigned long flags; | |
302 | ||
303 | if (! update) | |
304 | return; | |
305 | ||
306 | emu = port->emu; | |
5e246b85 TI |
307 | if (snd_BUG_ON(!emu || !emu->ops.update)) |
308 | return; | |
1da177e4 LT |
309 | |
310 | spin_lock_irqsave(&emu->voice_lock, flags); | |
311 | for (i = 0; i < emu->max_voices; i++) { | |
312 | vp = &emu->voices[i]; | |
313 | if (vp->port == port) | |
314 | update_voice(emu, vp, update); | |
315 | } | |
316 | spin_unlock_irqrestore(&emu->voice_lock, flags); | |
317 | } | |
318 | ||
319 | ||
320 | /* | |
3a4fa0a2 | 321 | * Deal with a controller type event. This includes all types of |
1da177e4 LT |
322 | * control events, not just the midi controllers |
323 | */ | |
324 | void | |
03da312a | 325 | snd_emux_control(void *p, int type, struct snd_midi_channel *chan) |
1da177e4 | 326 | { |
03da312a | 327 | struct snd_emux_port *port; |
1da177e4 LT |
328 | |
329 | port = p; | |
5e246b85 TI |
330 | if (snd_BUG_ON(!port || !chan)) |
331 | return; | |
1da177e4 LT |
332 | |
333 | switch (type) { | |
334 | case MIDI_CTL_MSB_MAIN_VOLUME: | |
335 | case MIDI_CTL_MSB_EXPRESSION: | |
336 | snd_emux_update_channel(port, chan, SNDRV_EMUX_UPDATE_VOLUME); | |
337 | break; | |
338 | ||
339 | case MIDI_CTL_MSB_PAN: | |
340 | snd_emux_update_channel(port, chan, SNDRV_EMUX_UPDATE_PAN); | |
341 | break; | |
342 | ||
343 | case MIDI_CTL_SOFT_PEDAL: | |
344 | #ifdef SNDRV_EMUX_USE_RAW_EFFECT | |
345 | /* FIXME: this is an emulation */ | |
bf91141d | 346 | if (chan->control[type] >= 64) |
347 | snd_emux_send_effect(port, chan, EMUX_FX_CUTOFF, -160, | |
1da177e4 | 348 | EMUX_FX_FLAG_ADD); |
bf91141d | 349 | else |
350 | snd_emux_send_effect(port, chan, EMUX_FX_CUTOFF, 0, | |
351 | EMUX_FX_FLAG_OFF); | |
1da177e4 LT |
352 | #endif |
353 | break; | |
354 | ||
355 | case MIDI_CTL_PITCHBEND: | |
356 | snd_emux_update_channel(port, chan, SNDRV_EMUX_UPDATE_PITCH); | |
357 | break; | |
358 | ||
359 | case MIDI_CTL_MSB_MODWHEEL: | |
360 | case MIDI_CTL_CHAN_PRESSURE: | |
361 | snd_emux_update_channel(port, chan, | |
362 | SNDRV_EMUX_UPDATE_FMMOD | | |
363 | SNDRV_EMUX_UPDATE_FM2FRQ2); | |
364 | break; | |
365 | ||
366 | } | |
367 | ||
368 | if (port->chset.midi_mode == SNDRV_MIDI_MODE_XG) { | |
369 | snd_emux_xg_control(port, chan, type); | |
370 | } | |
371 | } | |
372 | ||
373 | ||
374 | /* | |
375 | * terminate note - if free flag is true, free the terminated voice | |
376 | */ | |
377 | static void | |
03da312a | 378 | terminate_note1(struct snd_emux *emu, int note, struct snd_midi_channel *chan, int free) |
1da177e4 LT |
379 | { |
380 | int i; | |
03da312a | 381 | struct snd_emux_voice *vp; |
1da177e4 LT |
382 | unsigned long flags; |
383 | ||
384 | spin_lock_irqsave(&emu->voice_lock, flags); | |
385 | for (i = 0; i < emu->max_voices; i++) { | |
386 | vp = &emu->voices[i]; | |
387 | if (STATE_IS_PLAYING(vp->state) && vp->chan == chan && | |
388 | vp->key == note) | |
389 | terminate_voice(emu, vp, free); | |
390 | } | |
391 | spin_unlock_irqrestore(&emu->voice_lock, flags); | |
392 | } | |
393 | ||
394 | ||
395 | /* | |
396 | * terminate note - exported for midi emulation | |
397 | */ | |
398 | void | |
03da312a | 399 | snd_emux_terminate_note(void *p, int note, struct snd_midi_channel *chan) |
1da177e4 | 400 | { |
03da312a TI |
401 | struct snd_emux *emu; |
402 | struct snd_emux_port *port; | |
1da177e4 LT |
403 | |
404 | port = p; | |
5e246b85 TI |
405 | if (snd_BUG_ON(!port || !chan)) |
406 | return; | |
1da177e4 LT |
407 | |
408 | emu = port->emu; | |
5e246b85 TI |
409 | if (snd_BUG_ON(!emu || !emu->ops.terminate)) |
410 | return; | |
1da177e4 LT |
411 | |
412 | terminate_note1(emu, note, chan, 1); | |
413 | } | |
414 | ||
415 | ||
416 | /* | |
417 | * Terminate all the notes | |
418 | */ | |
419 | void | |
03da312a | 420 | snd_emux_terminate_all(struct snd_emux *emu) |
1da177e4 LT |
421 | { |
422 | int i; | |
03da312a | 423 | struct snd_emux_voice *vp; |
1da177e4 LT |
424 | unsigned long flags; |
425 | ||
426 | spin_lock_irqsave(&emu->voice_lock, flags); | |
427 | for (i = 0; i < emu->max_voices; i++) { | |
428 | vp = &emu->voices[i]; | |
429 | if (STATE_IS_PLAYING(vp->state)) | |
430 | terminate_voice(emu, vp, 0); | |
431 | if (vp->state == SNDRV_EMUX_ST_OFF) { | |
432 | if (emu->ops.free_voice) | |
433 | emu->ops.free_voice(vp); | |
434 | if (emu->ops.reset) | |
435 | emu->ops.reset(emu, i); | |
436 | } | |
437 | vp->time = 0; | |
438 | } | |
439 | /* initialize allocation time */ | |
440 | emu->use_time = 0; | |
441 | spin_unlock_irqrestore(&emu->voice_lock, flags); | |
442 | } | |
443 | ||
95ff1756 | 444 | EXPORT_SYMBOL(snd_emux_terminate_all); |
1da177e4 LT |
445 | |
446 | /* | |
447 | * Terminate all voices associated with the given port | |
448 | */ | |
449 | void | |
03da312a | 450 | snd_emux_sounds_off_all(struct snd_emux_port *port) |
1da177e4 LT |
451 | { |
452 | int i; | |
03da312a TI |
453 | struct snd_emux *emu; |
454 | struct snd_emux_voice *vp; | |
1da177e4 LT |
455 | unsigned long flags; |
456 | ||
5e246b85 TI |
457 | if (snd_BUG_ON(!port)) |
458 | return; | |
1da177e4 | 459 | emu = port->emu; |
5e246b85 TI |
460 | if (snd_BUG_ON(!emu || !emu->ops.terminate)) |
461 | return; | |
1da177e4 LT |
462 | |
463 | spin_lock_irqsave(&emu->voice_lock, flags); | |
464 | for (i = 0; i < emu->max_voices; i++) { | |
465 | vp = &emu->voices[i]; | |
466 | if (STATE_IS_PLAYING(vp->state) && | |
467 | vp->port == port) | |
468 | terminate_voice(emu, vp, 0); | |
469 | if (vp->state == SNDRV_EMUX_ST_OFF) { | |
470 | if (emu->ops.free_voice) | |
471 | emu->ops.free_voice(vp); | |
472 | if (emu->ops.reset) | |
473 | emu->ops.reset(emu, i); | |
474 | } | |
475 | } | |
476 | spin_unlock_irqrestore(&emu->voice_lock, flags); | |
477 | } | |
478 | ||
479 | ||
480 | /* | |
481 | * Terminate all voices that have the same exclusive class. This | |
482 | * is mainly for drums. | |
483 | */ | |
484 | static void | |
03da312a | 485 | exclusive_note_off(struct snd_emux *emu, struct snd_emux_port *port, int exclass) |
1da177e4 | 486 | { |
03da312a | 487 | struct snd_emux_voice *vp; |
1da177e4 LT |
488 | int i; |
489 | unsigned long flags; | |
490 | ||
491 | spin_lock_irqsave(&emu->voice_lock, flags); | |
492 | for (i = 0; i < emu->max_voices; i++) { | |
493 | vp = &emu->voices[i]; | |
494 | if (STATE_IS_PLAYING(vp->state) && vp->port == port && | |
495 | vp->reg.exclusiveClass == exclass) { | |
496 | terminate_voice(emu, vp, 0); | |
497 | } | |
498 | } | |
499 | spin_unlock_irqrestore(&emu->voice_lock, flags); | |
500 | } | |
501 | ||
502 | /* | |
503 | * terminate a voice | |
504 | * if free flag is true, call free_voice after termination | |
505 | */ | |
506 | static void | |
03da312a | 507 | terminate_voice(struct snd_emux *emu, struct snd_emux_voice *vp, int free) |
1da177e4 LT |
508 | { |
509 | emu->ops.terminate(vp); | |
510 | vp->time = emu->use_time++; | |
511 | vp->chan = NULL; | |
512 | vp->port = NULL; | |
513 | vp->zone = NULL; | |
514 | vp->block = NULL; | |
515 | vp->state = SNDRV_EMUX_ST_OFF; | |
516 | if (free && emu->ops.free_voice) | |
517 | emu->ops.free_voice(vp); | |
518 | } | |
519 | ||
520 | ||
521 | /* | |
522 | * Modulate the voice | |
523 | */ | |
524 | static void | |
03da312a | 525 | update_voice(struct snd_emux *emu, struct snd_emux_voice *vp, int update) |
1da177e4 LT |
526 | { |
527 | if (!STATE_IS_PLAYING(vp->state)) | |
528 | return; | |
529 | ||
530 | if (vp->chan == NULL || vp->port == NULL) | |
531 | return; | |
532 | if (update & SNDRV_EMUX_UPDATE_VOLUME) | |
533 | calc_volume(vp); | |
534 | if (update & SNDRV_EMUX_UPDATE_PITCH) | |
535 | calc_pitch(vp); | |
536 | if (update & SNDRV_EMUX_UPDATE_PAN) { | |
537 | if (! calc_pan(vp) && (update == SNDRV_EMUX_UPDATE_PAN)) | |
538 | return; | |
539 | } | |
540 | emu->ops.update(vp, update); | |
541 | } | |
542 | ||
543 | ||
544 | #if 0 // not used | |
545 | /* table for volume target calculation */ | |
546 | static unsigned short voltarget[16] = { | |
547 | 0xEAC0, 0xE0C8, 0xD740, 0xCE20, 0xC560, 0xBD08, 0xB500, 0xAD58, | |
548 | 0xA5F8, 0x9EF0, 0x9830, 0x91C0, 0x8B90, 0x85A8, 0x8000, 0x7A90 | |
549 | }; | |
550 | #endif | |
551 | ||
552 | #define LO_BYTE(v) ((v) & 0xff) | |
553 | #define HI_BYTE(v) (((v) >> 8) & 0xff) | |
554 | ||
555 | /* | |
556 | * Sets up the voice structure by calculating some values that | |
557 | * will be needed later. | |
558 | */ | |
559 | static void | |
03da312a | 560 | setup_voice(struct snd_emux_voice *vp) |
1da177e4 | 561 | { |
03da312a | 562 | struct soundfont_voice_parm *parm; |
1da177e4 LT |
563 | int pitch; |
564 | ||
565 | /* copy the original register values */ | |
566 | vp->reg = vp->zone->v; | |
567 | ||
568 | #ifdef SNDRV_EMUX_USE_RAW_EFFECT | |
569 | snd_emux_setup_effect(vp); | |
570 | #endif | |
571 | ||
572 | /* reset status */ | |
573 | vp->apan = -1; | |
574 | vp->avol = -1; | |
575 | vp->apitch = -1; | |
576 | ||
577 | calc_volume(vp); | |
578 | calc_pitch(vp); | |
579 | calc_pan(vp); | |
580 | ||
581 | parm = &vp->reg.parm; | |
582 | ||
583 | /* compute filter target and correct modulation parameters */ | |
584 | if (LO_BYTE(parm->modatkhld) >= 0x80 && parm->moddelay >= 0x8000) { | |
585 | parm->moddelay = 0xbfff; | |
586 | pitch = (HI_BYTE(parm->pefe) << 4) + vp->apitch; | |
587 | if (pitch > 0xffff) | |
588 | pitch = 0xffff; | |
589 | /* calculate filter target */ | |
590 | vp->ftarget = parm->cutoff + LO_BYTE(parm->pefe); | |
591 | LIMITVALUE(vp->ftarget, 0, 255); | |
592 | vp->ftarget <<= 8; | |
593 | } else { | |
594 | vp->ftarget = parm->cutoff; | |
595 | vp->ftarget <<= 8; | |
596 | pitch = vp->apitch; | |
597 | } | |
598 | ||
599 | /* compute pitch target */ | |
600 | if (pitch != 0xffff) { | |
601 | vp->ptarget = 1 << (pitch >> 12); | |
602 | if (pitch & 0x800) vp->ptarget += (vp->ptarget*0x102e)/0x2710; | |
603 | if (pitch & 0x400) vp->ptarget += (vp->ptarget*0x764)/0x2710; | |
604 | if (pitch & 0x200) vp->ptarget += (vp->ptarget*0x389)/0x2710; | |
605 | vp->ptarget += (vp->ptarget >> 1); | |
606 | if (vp->ptarget > 0xffff) vp->ptarget = 0xffff; | |
607 | } else | |
608 | vp->ptarget = 0xffff; | |
609 | ||
610 | if (LO_BYTE(parm->modatkhld) >= 0x80) { | |
611 | parm->modatkhld &= ~0xff; | |
612 | parm->modatkhld |= 0x7f; | |
613 | } | |
614 | ||
615 | /* compute volume target and correct volume parameters */ | |
616 | vp->vtarget = 0; | |
617 | #if 0 /* FIXME: this leads to some clicks.. */ | |
618 | if (LO_BYTE(parm->volatkhld) >= 0x80 && parm->voldelay >= 0x8000) { | |
619 | parm->voldelay = 0xbfff; | |
620 | vp->vtarget = voltarget[vp->avol % 0x10] >> (vp->avol >> 4); | |
621 | } | |
622 | #endif | |
623 | ||
624 | if (LO_BYTE(parm->volatkhld) >= 0x80) { | |
625 | parm->volatkhld &= ~0xff; | |
626 | parm->volatkhld |= 0x7f; | |
627 | } | |
628 | } | |
629 | ||
630 | /* | |
631 | * calculate pitch parameter | |
632 | */ | |
633 | static unsigned char pan_volumes[256] = { | |
634 | 0x00,0x03,0x06,0x09,0x0c,0x0f,0x12,0x14,0x17,0x1a,0x1d,0x20,0x22,0x25,0x28,0x2a, | |
635 | 0x2d,0x30,0x32,0x35,0x37,0x3a,0x3c,0x3f,0x41,0x44,0x46,0x49,0x4b,0x4d,0x50,0x52, | |
636 | 0x54,0x57,0x59,0x5b,0x5d,0x60,0x62,0x64,0x66,0x68,0x6a,0x6c,0x6f,0x71,0x73,0x75, | |
637 | 0x77,0x79,0x7b,0x7c,0x7e,0x80,0x82,0x84,0x86,0x88,0x89,0x8b,0x8d,0x8f,0x90,0x92, | |
638 | 0x94,0x96,0x97,0x99,0x9a,0x9c,0x9e,0x9f,0xa1,0xa2,0xa4,0xa5,0xa7,0xa8,0xaa,0xab, | |
639 | 0xad,0xae,0xaf,0xb1,0xb2,0xb3,0xb5,0xb6,0xb7,0xb9,0xba,0xbb,0xbc,0xbe,0xbf,0xc0, | |
640 | 0xc1,0xc2,0xc3,0xc5,0xc6,0xc7,0xc8,0xc9,0xca,0xcb,0xcc,0xcd,0xce,0xcf,0xd0,0xd1, | |
641 | 0xd2,0xd3,0xd4,0xd5,0xd6,0xd7,0xd7,0xd8,0xd9,0xda,0xdb,0xdc,0xdc,0xdd,0xde,0xdf, | |
642 | 0xdf,0xe0,0xe1,0xe2,0xe2,0xe3,0xe4,0xe4,0xe5,0xe6,0xe6,0xe7,0xe8,0xe8,0xe9,0xe9, | |
643 | 0xea,0xeb,0xeb,0xec,0xec,0xed,0xed,0xee,0xee,0xef,0xef,0xf0,0xf0,0xf1,0xf1,0xf1, | |
644 | 0xf2,0xf2,0xf3,0xf3,0xf3,0xf4,0xf4,0xf5,0xf5,0xf5,0xf6,0xf6,0xf6,0xf7,0xf7,0xf7, | |
645 | 0xf7,0xf8,0xf8,0xf8,0xf9,0xf9,0xf9,0xf9,0xf9,0xfa,0xfa,0xfa,0xfa,0xfb,0xfb,0xfb, | |
646 | 0xfb,0xfb,0xfc,0xfc,0xfc,0xfc,0xfc,0xfc,0xfc,0xfd,0xfd,0xfd,0xfd,0xfd,0xfd,0xfd, | |
647 | 0xfd,0xfe,0xfe,0xfe,0xfe,0xfe,0xfe,0xfe,0xfe,0xfe,0xfe,0xfe,0xfe,0xfe,0xfe,0xfe, | |
648 | 0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff, | |
649 | 0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff, | |
650 | }; | |
651 | ||
652 | static int | |
03da312a | 653 | calc_pan(struct snd_emux_voice *vp) |
1da177e4 | 654 | { |
03da312a | 655 | struct snd_midi_channel *chan = vp->chan; |
1da177e4 LT |
656 | int pan; |
657 | ||
658 | /* pan & loop start (pan 8bit, MSB, 0:right, 0xff:left) */ | |
659 | if (vp->reg.fixpan > 0) /* 0-127 */ | |
660 | pan = 255 - (int)vp->reg.fixpan * 2; | |
661 | else { | |
662 | pan = chan->control[MIDI_CTL_MSB_PAN] - 64; | |
663 | if (vp->reg.pan >= 0) /* 0-127 */ | |
664 | pan += vp->reg.pan - 64; | |
665 | pan = 127 - (int)pan * 2; | |
666 | } | |
667 | LIMITVALUE(pan, 0, 255); | |
668 | ||
669 | if (vp->emu->linear_panning) { | |
670 | /* assuming linear volume */ | |
671 | if (pan != vp->apan) { | |
672 | vp->apan = pan; | |
673 | if (pan == 0) | |
674 | vp->aaux = 0xff; | |
675 | else | |
676 | vp->aaux = (-pan) & 0xff; | |
677 | return 1; | |
678 | } else | |
679 | return 0; | |
680 | } else { | |
681 | /* using volume table */ | |
682 | if (vp->apan != (int)pan_volumes[pan]) { | |
683 | vp->apan = pan_volumes[pan]; | |
684 | vp->aaux = pan_volumes[255 - pan]; | |
685 | return 1; | |
686 | } | |
687 | return 0; | |
688 | } | |
689 | } | |
690 | ||
691 | ||
692 | /* | |
693 | * calculate volume attenuation | |
694 | * | |
695 | * Voice volume is controlled by volume attenuation parameter. | |
696 | * So volume becomes maximum when avol is 0 (no attenuation), and | |
697 | * minimum when 255 (-96dB or silence). | |
698 | */ | |
699 | ||
700 | /* tables for volume->attenuation calculation */ | |
701 | static unsigned char voltab1[128] = { | |
702 | 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, | |
703 | 0x63, 0x2b, 0x29, 0x28, 0x27, 0x26, 0x25, 0x24, 0x23, 0x22, | |
704 | 0x21, 0x20, 0x1f, 0x1e, 0x1e, 0x1d, 0x1c, 0x1b, 0x1b, 0x1a, | |
705 | 0x19, 0x19, 0x18, 0x17, 0x17, 0x16, 0x16, 0x15, 0x15, 0x14, | |
706 | 0x14, 0x13, 0x13, 0x13, 0x12, 0x12, 0x11, 0x11, 0x11, 0x10, | |
707 | 0x10, 0x10, 0x0f, 0x0f, 0x0f, 0x0e, 0x0e, 0x0e, 0x0e, 0x0d, | |
708 | 0x0d, 0x0d, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0b, 0x0b, 0x0b, | |
709 | 0x0b, 0x0a, 0x0a, 0x0a, 0x0a, 0x09, 0x09, 0x09, 0x09, 0x09, | |
710 | 0x08, 0x08, 0x08, 0x08, 0x08, 0x07, 0x07, 0x07, 0x07, 0x06, | |
711 | 0x06, 0x06, 0x06, 0x06, 0x05, 0x05, 0x05, 0x05, 0x05, 0x04, | |
712 | 0x04, 0x04, 0x04, 0x04, 0x03, 0x03, 0x03, 0x03, 0x03, 0x02, | |
713 | 0x02, 0x02, 0x02, 0x02, 0x02, 0x01, 0x01, 0x01, 0x01, 0x01, | |
714 | 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 | |
715 | }; | |
716 | ||
717 | static unsigned char voltab2[128] = { | |
718 | 0x32, 0x31, 0x30, 0x2f, 0x2e, 0x2d, 0x2c, 0x2b, 0x2a, 0x2a, | |
719 | 0x29, 0x28, 0x27, 0x26, 0x25, 0x24, 0x24, 0x23, 0x22, 0x21, | |
720 | 0x21, 0x20, 0x1f, 0x1e, 0x1e, 0x1d, 0x1c, 0x1c, 0x1b, 0x1a, | |
721 | 0x1a, 0x19, 0x19, 0x18, 0x18, 0x17, 0x16, 0x16, 0x15, 0x15, | |
722 | 0x14, 0x14, 0x13, 0x13, 0x13, 0x12, 0x12, 0x11, 0x11, 0x10, | |
723 | 0x10, 0x10, 0x0f, 0x0f, 0x0f, 0x0e, 0x0e, 0x0e, 0x0d, 0x0d, | |
724 | 0x0d, 0x0c, 0x0c, 0x0c, 0x0b, 0x0b, 0x0b, 0x0b, 0x0a, 0x0a, | |
725 | 0x0a, 0x0a, 0x09, 0x09, 0x09, 0x09, 0x09, 0x08, 0x08, 0x08, | |
726 | 0x08, 0x08, 0x07, 0x07, 0x07, 0x07, 0x07, 0x06, 0x06, 0x06, | |
727 | 0x06, 0x06, 0x06, 0x05, 0x05, 0x05, 0x05, 0x05, 0x05, 0x05, | |
728 | 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x03, 0x03, 0x03, 0x03, | |
729 | 0x03, 0x03, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x01, 0x01, | |
730 | 0x01, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00 | |
731 | }; | |
732 | ||
733 | static unsigned char expressiontab[128] = { | |
734 | 0x7f, 0x6c, 0x62, 0x5a, 0x54, 0x50, 0x4b, 0x48, 0x45, 0x42, | |
735 | 0x40, 0x3d, 0x3b, 0x39, 0x38, 0x36, 0x34, 0x33, 0x31, 0x30, | |
736 | 0x2f, 0x2d, 0x2c, 0x2b, 0x2a, 0x29, 0x28, 0x27, 0x26, 0x25, | |
737 | 0x24, 0x24, 0x23, 0x22, 0x21, 0x21, 0x20, 0x1f, 0x1e, 0x1e, | |
738 | 0x1d, 0x1d, 0x1c, 0x1b, 0x1b, 0x1a, 0x1a, 0x19, 0x18, 0x18, | |
739 | 0x17, 0x17, 0x16, 0x16, 0x15, 0x15, 0x15, 0x14, 0x14, 0x13, | |
740 | 0x13, 0x12, 0x12, 0x11, 0x11, 0x11, 0x10, 0x10, 0x0f, 0x0f, | |
741 | 0x0f, 0x0e, 0x0e, 0x0e, 0x0d, 0x0d, 0x0d, 0x0c, 0x0c, 0x0c, | |
742 | 0x0b, 0x0b, 0x0b, 0x0a, 0x0a, 0x0a, 0x09, 0x09, 0x09, 0x09, | |
743 | 0x08, 0x08, 0x08, 0x07, 0x07, 0x07, 0x07, 0x06, 0x06, 0x06, | |
744 | 0x06, 0x05, 0x05, 0x05, 0x04, 0x04, 0x04, 0x04, 0x04, 0x03, | |
745 | 0x03, 0x03, 0x03, 0x02, 0x02, 0x02, 0x02, 0x01, 0x01, 0x01, | |
746 | 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 | |
747 | }; | |
748 | ||
749 | /* | |
750 | * Magic to calculate the volume (actually attenuation) from all the | |
751 | * voice and channels parameters. | |
752 | */ | |
753 | static int | |
03da312a | 754 | calc_volume(struct snd_emux_voice *vp) |
1da177e4 LT |
755 | { |
756 | int vol; | |
757 | int main_vol, expression_vol, master_vol; | |
03da312a TI |
758 | struct snd_midi_channel *chan = vp->chan; |
759 | struct snd_emux_port *port = vp->port; | |
1da177e4 LT |
760 | |
761 | expression_vol = chan->control[MIDI_CTL_MSB_EXPRESSION]; | |
762 | LIMITMAX(vp->velocity, 127); | |
763 | LIMITVALUE(expression_vol, 0, 127); | |
764 | if (port->port_mode == SNDRV_EMUX_PORT_MODE_OSS_SYNTH) { | |
765 | /* 0 - 127 */ | |
766 | main_vol = chan->control[MIDI_CTL_MSB_MAIN_VOLUME]; | |
767 | vol = (vp->velocity * main_vol * expression_vol) / (127*127); | |
768 | vol = vol * vp->reg.amplitude / 127; | |
769 | ||
770 | LIMITVALUE(vol, 0, 127); | |
771 | ||
772 | /* calc to attenuation */ | |
773 | vol = snd_sf_vol_table[vol]; | |
774 | ||
775 | } else { | |
776 | main_vol = chan->control[MIDI_CTL_MSB_MAIN_VOLUME] * vp->reg.amplitude / 127; | |
777 | LIMITVALUE(main_vol, 0, 127); | |
778 | ||
779 | vol = voltab1[main_vol] + voltab2[vp->velocity]; | |
780 | vol = (vol * 8) / 3; | |
781 | vol += vp->reg.attenuation; | |
782 | vol += ((0x100 - vol) * expressiontab[expression_vol])/128; | |
783 | } | |
784 | ||
785 | master_vol = port->chset.gs_master_volume; | |
786 | LIMITVALUE(master_vol, 0, 127); | |
787 | vol += snd_sf_vol_table[master_vol]; | |
788 | vol += port->volume_atten; | |
789 | ||
790 | #ifdef SNDRV_EMUX_USE_RAW_EFFECT | |
791 | if (chan->private) { | |
03da312a | 792 | struct snd_emux_effect_table *fx = chan->private; |
1da177e4 LT |
793 | vol += fx->val[EMUX_FX_ATTEN]; |
794 | } | |
795 | #endif | |
796 | ||
797 | LIMITVALUE(vol, 0, 255); | |
798 | if (vp->avol == vol) | |
799 | return 0; /* value unchanged */ | |
800 | ||
801 | vp->avol = vol; | |
802 | if (!SF_IS_DRUM_BANK(get_bank(port, chan)) | |
803 | && LO_BYTE(vp->reg.parm.volatkhld) < 0x7d) { | |
804 | int atten; | |
805 | if (vp->velocity < 70) | |
806 | atten = 70; | |
807 | else | |
808 | atten = vp->velocity; | |
809 | vp->acutoff = (atten * vp->reg.parm.cutoff + 0xa0) >> 7; | |
810 | } else { | |
811 | vp->acutoff = vp->reg.parm.cutoff; | |
812 | } | |
813 | ||
814 | return 1; /* value changed */ | |
815 | } | |
816 | ||
817 | /* | |
818 | * calculate pitch offset | |
819 | * | |
820 | * 0xE000 is no pitch offset at 44100Hz sample. | |
821 | * Every 4096 is one octave. | |
822 | */ | |
823 | ||
824 | static int | |
03da312a | 825 | calc_pitch(struct snd_emux_voice *vp) |
1da177e4 | 826 | { |
03da312a | 827 | struct snd_midi_channel *chan = vp->chan; |
1da177e4 LT |
828 | int offset; |
829 | ||
830 | /* calculate offset */ | |
831 | if (vp->reg.fixkey >= 0) { | |
832 | offset = (vp->reg.fixkey - vp->reg.root) * 4096 / 12; | |
833 | } else { | |
834 | offset = (vp->note - vp->reg.root) * 4096 / 12; | |
835 | } | |
836 | offset = (offset * vp->reg.scaleTuning) / 100; | |
837 | offset += vp->reg.tune * 4096 / 1200; | |
838 | if (chan->midi_pitchbend != 0) { | |
839 | /* (128 * 8192: 1 semitone) ==> (4096: 12 semitones) */ | |
840 | offset += chan->midi_pitchbend * chan->gm_rpn_pitch_bend_range / 3072; | |
841 | } | |
842 | ||
843 | /* tuning via RPN: | |
844 | * coarse = -8192 to 8192 (100 cent per 128) | |
845 | * fine = -8192 to 8192 (max=100cent) | |
846 | */ | |
847 | /* 4096 = 1200 cents in emu8000 parameter */ | |
848 | offset += chan->gm_rpn_coarse_tuning * 4096 / (12 * 128); | |
849 | offset += chan->gm_rpn_fine_tuning / 24; | |
850 | ||
851 | #ifdef SNDRV_EMUX_USE_RAW_EFFECT | |
852 | /* add initial pitch correction */ | |
853 | if (chan->private) { | |
03da312a | 854 | struct snd_emux_effect_table *fx = chan->private; |
1da177e4 LT |
855 | if (fx->flag[EMUX_FX_INIT_PITCH]) |
856 | offset += fx->val[EMUX_FX_INIT_PITCH]; | |
857 | } | |
858 | #endif | |
859 | ||
860 | /* 0xe000: root pitch */ | |
861 | offset += 0xe000 + vp->reg.rate_offset; | |
862 | offset += vp->emu->pitch_shift; | |
863 | LIMITVALUE(offset, 0, 0xffff); | |
864 | if (offset == vp->apitch) | |
865 | return 0; /* unchanged */ | |
866 | vp->apitch = offset; | |
867 | return 1; /* value changed */ | |
868 | } | |
869 | ||
870 | /* | |
871 | * Get the bank number assigned to the channel | |
872 | */ | |
873 | static int | |
03da312a | 874 | get_bank(struct snd_emux_port *port, struct snd_midi_channel *chan) |
1da177e4 LT |
875 | { |
876 | int val; | |
877 | ||
878 | switch (port->chset.midi_mode) { | |
879 | case SNDRV_MIDI_MODE_XG: | |
880 | val = chan->control[MIDI_CTL_MSB_BANK]; | |
881 | if (val == 127) | |
882 | return 128; /* return drum bank */ | |
883 | return chan->control[MIDI_CTL_LSB_BANK]; | |
884 | ||
885 | case SNDRV_MIDI_MODE_GS: | |
886 | if (chan->drum_channel) | |
887 | return 128; | |
888 | /* ignore LSB (bank map) */ | |
889 | return chan->control[MIDI_CTL_MSB_BANK]; | |
890 | ||
891 | default: | |
892 | if (chan->drum_channel) | |
893 | return 128; | |
894 | return chan->control[MIDI_CTL_MSB_BANK]; | |
895 | } | |
896 | } | |
897 | ||
898 | ||
899 | /* Look for the zones matching with the given note and velocity. | |
900 | * The resultant zones are stored on table. | |
901 | */ | |
902 | static int | |
03da312a TI |
903 | get_zone(struct snd_emux *emu, struct snd_emux_port *port, |
904 | int *notep, int vel, struct snd_midi_channel *chan, | |
905 | struct snd_sf_zone **table) | |
1da177e4 LT |
906 | { |
907 | int preset, bank, def_preset, def_bank; | |
908 | ||
909 | bank = get_bank(port, chan); | |
910 | preset = chan->midi_program; | |
911 | ||
912 | if (SF_IS_DRUM_BANK(bank)) { | |
913 | def_preset = port->ctrls[EMUX_MD_DEF_DRUM]; | |
914 | def_bank = bank; | |
915 | } else { | |
916 | def_preset = preset; | |
917 | def_bank = port->ctrls[EMUX_MD_DEF_BANK]; | |
918 | } | |
919 | ||
920 | return snd_soundfont_search_zone(emu->sflist, notep, vel, preset, bank, | |
921 | def_preset, def_bank, | |
922 | table, SNDRV_EMUX_MAX_MULTI_VOICES); | |
923 | } | |
924 | ||
925 | /* | |
926 | */ | |
927 | void | |
03da312a | 928 | snd_emux_init_voices(struct snd_emux *emu) |
1da177e4 | 929 | { |
03da312a | 930 | struct snd_emux_voice *vp; |
1da177e4 LT |
931 | int i; |
932 | unsigned long flags; | |
933 | ||
934 | spin_lock_irqsave(&emu->voice_lock, flags); | |
935 | for (i = 0; i < emu->max_voices; i++) { | |
936 | vp = &emu->voices[i]; | |
937 | vp->ch = -1; /* not used */ | |
938 | vp->state = SNDRV_EMUX_ST_OFF; | |
939 | vp->chan = NULL; | |
940 | vp->port = NULL; | |
941 | vp->time = 0; | |
942 | vp->emu = emu; | |
943 | vp->hw = emu->hw; | |
944 | } | |
945 | spin_unlock_irqrestore(&emu->voice_lock, flags); | |
946 | } | |
947 | ||
948 | /* | |
949 | */ | |
03da312a | 950 | void snd_emux_lock_voice(struct snd_emux *emu, int voice) |
1da177e4 LT |
951 | { |
952 | unsigned long flags; | |
953 | ||
954 | spin_lock_irqsave(&emu->voice_lock, flags); | |
955 | if (emu->voices[voice].state == SNDRV_EMUX_ST_OFF) | |
956 | emu->voices[voice].state = SNDRV_EMUX_ST_LOCKED; | |
957 | else | |
42b0158b TI |
958 | snd_printk(KERN_WARNING |
959 | "invalid voice for lock %d (state = %x)\n", | |
1da177e4 LT |
960 | voice, emu->voices[voice].state); |
961 | spin_unlock_irqrestore(&emu->voice_lock, flags); | |
962 | } | |
963 | ||
95ff1756 TI |
964 | EXPORT_SYMBOL(snd_emux_lock_voice); |
965 | ||
1da177e4 LT |
966 | /* |
967 | */ | |
03da312a | 968 | void snd_emux_unlock_voice(struct snd_emux *emu, int voice) |
1da177e4 LT |
969 | { |
970 | unsigned long flags; | |
971 | ||
972 | spin_lock_irqsave(&emu->voice_lock, flags); | |
973 | if (emu->voices[voice].state == SNDRV_EMUX_ST_LOCKED) | |
974 | emu->voices[voice].state = SNDRV_EMUX_ST_OFF; | |
975 | else | |
42b0158b TI |
976 | snd_printk(KERN_WARNING |
977 | "invalid voice for unlock %d (state = %x)\n", | |
1da177e4 LT |
978 | voice, emu->voices[voice].state); |
979 | spin_unlock_irqrestore(&emu->voice_lock, flags); | |
980 | } | |
95ff1756 TI |
981 | |
982 | EXPORT_SYMBOL(snd_emux_unlock_voice); |