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1da177e4 LT |
1 | /* |
2 | * synth callback routines for Emu10k1 | |
3 | * | |
4 | * Copyright (C) 2000 Takashi Iwai <tiwai@suse.de> | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License as published by | |
8 | * the Free Software Foundation; either version 2 of the License, or | |
9 | * (at your option) any later version. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | * GNU General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * along with this program; if not, write to the Free Software | |
18 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
19 | */ | |
20 | ||
21 | #include "emu10k1_synth_local.h" | |
22 | #include <sound/asoundef.h> | |
23 | ||
24 | /* voice status */ | |
25 | enum { | |
26 | V_FREE=0, V_OFF, V_RELEASED, V_PLAYING, V_END | |
27 | }; | |
28 | ||
29 | /* Keeps track of what we are finding */ | |
30 | typedef struct best_voice { | |
31 | unsigned int time; | |
32 | int voice; | |
33 | } best_voice_t; | |
34 | ||
35 | /* | |
36 | * prototypes | |
37 | */ | |
38 | static void lookup_voices(snd_emux_t *emu, emu10k1_t *hw, best_voice_t *best, int active_only); | |
39 | static snd_emux_voice_t *get_voice(snd_emux_t *emu, snd_emux_port_t *port); | |
40 | static int start_voice(snd_emux_voice_t *vp); | |
41 | static void trigger_voice(snd_emux_voice_t *vp); | |
42 | static void release_voice(snd_emux_voice_t *vp); | |
43 | static void update_voice(snd_emux_voice_t *vp, int update); | |
44 | static void terminate_voice(snd_emux_voice_t *vp); | |
45 | static void free_voice(snd_emux_voice_t *vp); | |
46 | ||
47 | static void set_fmmod(emu10k1_t *hw, snd_emux_voice_t *vp); | |
48 | static void set_fm2frq2(emu10k1_t *hw, snd_emux_voice_t *vp); | |
49 | static void set_filterQ(emu10k1_t *hw, snd_emux_voice_t *vp); | |
50 | ||
51 | /* | |
52 | * Ensure a value is between two points | |
53 | * macro evaluates its args more than once, so changed to upper-case. | |
54 | */ | |
55 | #define LIMITVALUE(x, a, b) do { if ((x) < (a)) (x) = (a); else if ((x) > (b)) (x) = (b); } while (0) | |
56 | #define LIMITMAX(x, a) do {if ((x) > (a)) (x) = (a); } while (0) | |
57 | ||
58 | ||
59 | /* | |
60 | * set up operators | |
61 | */ | |
62 | static snd_emux_operators_t emu10k1_ops = { | |
63 | .owner = THIS_MODULE, | |
64 | .get_voice = get_voice, | |
65 | .prepare = start_voice, | |
66 | .trigger = trigger_voice, | |
67 | .release = release_voice, | |
68 | .update = update_voice, | |
69 | .terminate = terminate_voice, | |
70 | .free_voice = free_voice, | |
71 | .sample_new = snd_emu10k1_sample_new, | |
72 | .sample_free = snd_emu10k1_sample_free, | |
73 | }; | |
74 | ||
75 | void | |
76 | snd_emu10k1_ops_setup(snd_emux_t *emu) | |
77 | { | |
78 | emu->ops = emu10k1_ops; | |
79 | } | |
80 | ||
81 | ||
82 | /* | |
83 | * get more voice for pcm | |
84 | * | |
85 | * terminate most inactive voice and give it as a pcm voice. | |
86 | */ | |
87 | int | |
88 | snd_emu10k1_synth_get_voice(emu10k1_t *hw) | |
89 | { | |
90 | snd_emux_t *emu; | |
91 | snd_emux_voice_t *vp; | |
92 | best_voice_t best[V_END]; | |
93 | unsigned long flags; | |
94 | int i; | |
95 | ||
96 | emu = hw->synth; | |
97 | ||
98 | spin_lock_irqsave(&emu->voice_lock, flags); | |
99 | lookup_voices(emu, hw, best, 1); /* no OFF voices */ | |
100 | for (i = 0; i < V_END; i++) { | |
101 | if (best[i].voice >= 0) { | |
102 | int ch; | |
103 | vp = &emu->voices[best[i].voice]; | |
104 | if ((ch = vp->ch) < 0) { | |
105 | //printk("synth_get_voice: ch < 0 (%d) ??", i); | |
106 | continue; | |
107 | } | |
108 | vp->emu->num_voices--; | |
109 | vp->ch = -1; | |
110 | vp->state = SNDRV_EMUX_ST_OFF; | |
111 | spin_unlock_irqrestore(&emu->voice_lock, flags); | |
112 | return ch; | |
113 | } | |
114 | } | |
115 | spin_unlock_irqrestore(&emu->voice_lock, flags); | |
116 | ||
117 | /* not found */ | |
118 | return -ENOMEM; | |
119 | } | |
120 | ||
121 | ||
122 | /* | |
123 | * turn off the voice (not terminated) | |
124 | */ | |
125 | static void | |
126 | release_voice(snd_emux_voice_t *vp) | |
127 | { | |
128 | int dcysusv; | |
129 | emu10k1_t *hw; | |
130 | ||
131 | hw = vp->hw; | |
132 | dcysusv = 0x8000 | (unsigned char)vp->reg.parm.modrelease; | |
133 | snd_emu10k1_ptr_write(hw, DCYSUSM, vp->ch, dcysusv); | |
134 | dcysusv = 0x8000 | (unsigned char)vp->reg.parm.volrelease | DCYSUSV_CHANNELENABLE_MASK; | |
135 | snd_emu10k1_ptr_write(hw, DCYSUSV, vp->ch, dcysusv); | |
136 | } | |
137 | ||
138 | ||
139 | /* | |
140 | * terminate the voice | |
141 | */ | |
142 | static void | |
143 | terminate_voice(snd_emux_voice_t *vp) | |
144 | { | |
145 | emu10k1_t *hw; | |
146 | ||
147 | snd_assert(vp, return); | |
148 | hw = vp->hw; | |
149 | snd_emu10k1_ptr_write(hw, DCYSUSV, vp->ch, 0x807f | DCYSUSV_CHANNELENABLE_MASK); | |
150 | if (vp->block) { | |
151 | emu10k1_memblk_t *emem; | |
152 | emem = (emu10k1_memblk_t *)vp->block; | |
153 | if (emem->map_locked > 0) | |
154 | emem->map_locked--; | |
155 | } | |
156 | } | |
157 | ||
158 | /* | |
159 | * release the voice to system | |
160 | */ | |
161 | static void | |
162 | free_voice(snd_emux_voice_t *vp) | |
163 | { | |
164 | emu10k1_t *hw; | |
165 | ||
166 | hw = vp->hw; | |
167 | if (vp->ch >= 0) { | |
168 | snd_emu10k1_ptr_write(hw, IFATN, vp->ch, 0xff00); | |
169 | snd_emu10k1_ptr_write(hw, DCYSUSV, vp->ch, 0x807f | DCYSUSV_CHANNELENABLE_MASK); | |
170 | // snd_emu10k1_ptr_write(hw, DCYSUSV, vp->ch, 0); | |
171 | snd_emu10k1_ptr_write(hw, VTFT, vp->ch, 0xffff); | |
172 | snd_emu10k1_ptr_write(hw, CVCF, vp->ch, 0xffff); | |
173 | snd_emu10k1_voice_free(hw, &hw->voices[vp->ch]); | |
174 | vp->emu->num_voices--; | |
175 | vp->ch = -1; | |
176 | } | |
177 | } | |
178 | ||
179 | ||
180 | /* | |
181 | * update registers | |
182 | */ | |
183 | static void | |
184 | update_voice(snd_emux_voice_t *vp, int update) | |
185 | { | |
186 | emu10k1_t *hw; | |
187 | ||
188 | hw = vp->hw; | |
189 | if (update & SNDRV_EMUX_UPDATE_VOLUME) | |
190 | snd_emu10k1_ptr_write(hw, IFATN_ATTENUATION, vp->ch, vp->avol); | |
191 | if (update & SNDRV_EMUX_UPDATE_PITCH) | |
192 | snd_emu10k1_ptr_write(hw, IP, vp->ch, vp->apitch); | |
193 | if (update & SNDRV_EMUX_UPDATE_PAN) { | |
194 | snd_emu10k1_ptr_write(hw, PTRX_FXSENDAMOUNT_A, vp->ch, vp->apan); | |
195 | snd_emu10k1_ptr_write(hw, PTRX_FXSENDAMOUNT_B, vp->ch, vp->aaux); | |
196 | } | |
197 | if (update & SNDRV_EMUX_UPDATE_FMMOD) | |
198 | set_fmmod(hw, vp); | |
199 | if (update & SNDRV_EMUX_UPDATE_TREMFREQ) | |
200 | snd_emu10k1_ptr_write(hw, TREMFRQ, vp->ch, vp->reg.parm.tremfrq); | |
201 | if (update & SNDRV_EMUX_UPDATE_FM2FRQ2) | |
202 | set_fm2frq2(hw, vp); | |
203 | if (update & SNDRV_EMUX_UPDATE_Q) | |
204 | set_filterQ(hw, vp); | |
205 | } | |
206 | ||
207 | ||
208 | /* | |
209 | * look up voice table - get the best voice in order of preference | |
210 | */ | |
211 | /* spinlock held! */ | |
212 | static void | |
213 | lookup_voices(snd_emux_t *emu, emu10k1_t *hw, best_voice_t *best, int active_only) | |
214 | { | |
215 | snd_emux_voice_t *vp; | |
216 | best_voice_t *bp; | |
217 | int i; | |
218 | ||
219 | for (i = 0; i < V_END; i++) { | |
220 | best[i].time = (unsigned int)-1; /* XXX MAX_?INT really */; | |
221 | best[i].voice = -1; | |
222 | } | |
223 | ||
224 | /* | |
225 | * Go through them all and get a best one to use. | |
226 | * NOTE: could also look at volume and pick the quietest one. | |
227 | */ | |
228 | for (i = 0; i < emu->max_voices; i++) { | |
229 | int state, val; | |
230 | ||
231 | vp = &emu->voices[i]; | |
232 | state = vp->state; | |
233 | if (state == SNDRV_EMUX_ST_OFF) { | |
234 | if (vp->ch < 0) { | |
235 | if (active_only) | |
236 | continue; | |
237 | bp = best + V_FREE; | |
238 | } else | |
239 | bp = best + V_OFF; | |
240 | } | |
241 | else if (state == SNDRV_EMUX_ST_RELEASED || | |
242 | state == SNDRV_EMUX_ST_PENDING) { | |
243 | bp = best + V_RELEASED; | |
244 | #if 0 | |
245 | val = snd_emu10k1_ptr_read(hw, CVCF_CURRENTVOL, vp->ch); | |
246 | if (! val) | |
247 | bp = best + V_OFF; | |
248 | #endif | |
249 | } | |
250 | else if (state == SNDRV_EMUX_ST_STANDBY) | |
251 | continue; | |
252 | else if (state & SNDRV_EMUX_ST_ON) | |
253 | bp = best + V_PLAYING; | |
254 | else | |
255 | continue; | |
256 | ||
257 | /* check if sample is finished playing (non-looping only) */ | |
258 | if (bp != best + V_OFF && bp != best + V_FREE && | |
259 | (vp->reg.sample_mode & SNDRV_SFNT_SAMPLE_SINGLESHOT)) { | |
260 | val = snd_emu10k1_ptr_read(hw, CCCA_CURRADDR, vp->ch); | |
261 | if (val >= vp->reg.loopstart) | |
262 | bp = best + V_OFF; | |
263 | } | |
264 | ||
265 | if (vp->time < bp->time) { | |
266 | bp->time = vp->time; | |
267 | bp->voice = i; | |
268 | } | |
269 | } | |
270 | } | |
271 | ||
272 | /* | |
273 | * get an empty voice | |
274 | * | |
275 | * emu->voice_lock is already held. | |
276 | */ | |
277 | static snd_emux_voice_t * | |
278 | get_voice(snd_emux_t *emu, snd_emux_port_t *port) | |
279 | { | |
280 | emu10k1_t *hw; | |
281 | snd_emux_voice_t *vp; | |
282 | best_voice_t best[V_END]; | |
283 | int i; | |
284 | ||
285 | hw = emu->hw; | |
286 | ||
287 | lookup_voices(emu, hw, best, 0); | |
288 | for (i = 0; i < V_END; i++) { | |
289 | if (best[i].voice >= 0) { | |
290 | vp = &emu->voices[best[i].voice]; | |
291 | if (vp->ch < 0) { | |
292 | /* allocate a voice */ | |
293 | emu10k1_voice_t *hwvoice; | |
294 | if (snd_emu10k1_voice_alloc(hw, EMU10K1_SYNTH, 1, &hwvoice) < 0 || hwvoice == NULL) | |
295 | continue; | |
296 | vp->ch = hwvoice->number; | |
297 | emu->num_voices++; | |
298 | } | |
299 | return vp; | |
300 | } | |
301 | } | |
302 | ||
303 | /* not found */ | |
304 | return NULL; | |
305 | } | |
306 | ||
307 | /* | |
308 | * prepare envelopes and LFOs | |
309 | */ | |
310 | static int | |
311 | start_voice(snd_emux_voice_t *vp) | |
312 | { | |
313 | unsigned int temp; | |
314 | int ch; | |
315 | unsigned int addr, mapped_offset; | |
316 | snd_midi_channel_t *chan; | |
317 | emu10k1_t *hw; | |
318 | emu10k1_memblk_t *emem; | |
319 | ||
320 | hw = vp->hw; | |
321 | ch = vp->ch; | |
322 | snd_assert(ch >= 0, return -EINVAL); | |
323 | chan = vp->chan; | |
324 | ||
325 | emem = (emu10k1_memblk_t *)vp->block; | |
326 | if (emem == NULL) | |
327 | return -EINVAL; | |
328 | emem->map_locked++; | |
329 | if (snd_emu10k1_memblk_map(hw, emem) < 0) { | |
330 | // printk("emu: cannot map!\n"); | |
331 | return -ENOMEM; | |
332 | } | |
333 | mapped_offset = snd_emu10k1_memblk_offset(emem) >> 1; | |
334 | vp->reg.start += mapped_offset; | |
335 | vp->reg.end += mapped_offset; | |
336 | vp->reg.loopstart += mapped_offset; | |
337 | vp->reg.loopend += mapped_offset; | |
338 | ||
339 | /* set channel routing */ | |
340 | /* A = left(0), B = right(1), C = reverb(c), D = chorus(d) */ | |
341 | if (hw->audigy) { | |
342 | temp = FXBUS_MIDI_LEFT | (FXBUS_MIDI_RIGHT << 8) | | |
343 | (FXBUS_MIDI_REVERB << 16) | (FXBUS_MIDI_CHORUS << 24); | |
344 | snd_emu10k1_ptr_write(hw, A_FXRT1, ch, temp); | |
345 | } else { | |
346 | temp = (FXBUS_MIDI_LEFT << 16) | (FXBUS_MIDI_RIGHT << 20) | | |
347 | (FXBUS_MIDI_REVERB << 24) | (FXBUS_MIDI_CHORUS << 28); | |
348 | snd_emu10k1_ptr_write(hw, FXRT, ch, temp); | |
349 | } | |
350 | ||
351 | /* channel to be silent and idle */ | |
352 | snd_emu10k1_ptr_write(hw, DCYSUSV, ch, 0x0080); | |
353 | snd_emu10k1_ptr_write(hw, VTFT, ch, 0x0000FFFF); | |
354 | snd_emu10k1_ptr_write(hw, CVCF, ch, 0x0000FFFF); | |
355 | snd_emu10k1_ptr_write(hw, PTRX, ch, 0); | |
356 | snd_emu10k1_ptr_write(hw, CPF, ch, 0); | |
357 | ||
358 | /* set pitch offset */ | |
359 | snd_emu10k1_ptr_write(hw, IP, vp->ch, vp->apitch); | |
360 | ||
361 | /* set envelope parameters */ | |
362 | snd_emu10k1_ptr_write(hw, ENVVAL, ch, vp->reg.parm.moddelay); | |
363 | snd_emu10k1_ptr_write(hw, ATKHLDM, ch, vp->reg.parm.modatkhld); | |
364 | snd_emu10k1_ptr_write(hw, DCYSUSM, ch, vp->reg.parm.moddcysus); | |
365 | snd_emu10k1_ptr_write(hw, ENVVOL, ch, vp->reg.parm.voldelay); | |
366 | snd_emu10k1_ptr_write(hw, ATKHLDV, ch, vp->reg.parm.volatkhld); | |
367 | /* decay/sustain parameter for volume envelope is used | |
368 | for triggerg the voice */ | |
369 | ||
370 | /* cutoff and volume */ | |
371 | temp = (unsigned int)vp->acutoff << 8 | (unsigned char)vp->avol; | |
372 | snd_emu10k1_ptr_write(hw, IFATN, vp->ch, temp); | |
373 | ||
374 | /* modulation envelope heights */ | |
375 | snd_emu10k1_ptr_write(hw, PEFE, ch, vp->reg.parm.pefe); | |
376 | ||
377 | /* lfo1/2 delay */ | |
378 | snd_emu10k1_ptr_write(hw, LFOVAL1, ch, vp->reg.parm.lfo1delay); | |
379 | snd_emu10k1_ptr_write(hw, LFOVAL2, ch, vp->reg.parm.lfo2delay); | |
380 | ||
381 | /* lfo1 pitch & cutoff shift */ | |
382 | set_fmmod(hw, vp); | |
383 | /* lfo1 volume & freq */ | |
384 | snd_emu10k1_ptr_write(hw, TREMFRQ, vp->ch, vp->reg.parm.tremfrq); | |
385 | /* lfo2 pitch & freq */ | |
386 | set_fm2frq2(hw, vp); | |
387 | ||
388 | /* reverb and loop start (reverb 8bit, MSB) */ | |
389 | temp = vp->reg.parm.reverb; | |
390 | temp += (int)vp->chan->control[MIDI_CTL_E1_REVERB_DEPTH] * 9 / 10; | |
391 | LIMITMAX(temp, 255); | |
392 | addr = vp->reg.loopstart; | |
393 | snd_emu10k1_ptr_write(hw, PSST, vp->ch, (temp << 24) | addr); | |
394 | ||
395 | /* chorus & loop end (chorus 8bit, MSB) */ | |
396 | addr = vp->reg.loopend; | |
397 | temp = vp->reg.parm.chorus; | |
398 | temp += (int)chan->control[MIDI_CTL_E3_CHORUS_DEPTH] * 9 / 10; | |
399 | LIMITMAX(temp, 255); | |
400 | temp = (temp <<24) | addr; | |
401 | snd_emu10k1_ptr_write(hw, DSL, ch, temp); | |
402 | ||
403 | /* clear filter delay memory */ | |
404 | snd_emu10k1_ptr_write(hw, Z1, ch, 0); | |
405 | snd_emu10k1_ptr_write(hw, Z2, ch, 0); | |
406 | ||
407 | /* invalidate maps */ | |
408 | temp = (hw->silent_page.addr << 1) | MAP_PTI_MASK; | |
409 | snd_emu10k1_ptr_write(hw, MAPA, ch, temp); | |
410 | snd_emu10k1_ptr_write(hw, MAPB, ch, temp); | |
411 | #if 0 | |
412 | /* cache */ | |
413 | { | |
414 | unsigned int val, sample; | |
415 | val = 32; | |
416 | if (vp->reg.sample_mode & SNDRV_SFNT_SAMPLE_8BITS) | |
417 | sample = 0x80808080; | |
418 | else { | |
419 | sample = 0; | |
420 | val *= 2; | |
421 | } | |
422 | ||
423 | /* cache */ | |
424 | snd_emu10k1_ptr_write(hw, CCR, ch, 0x1c << 16); | |
425 | snd_emu10k1_ptr_write(hw, CDE, ch, sample); | |
426 | snd_emu10k1_ptr_write(hw, CDF, ch, sample); | |
427 | ||
428 | /* invalidate maps */ | |
429 | temp = ((unsigned int)hw->silent_page.addr << 1) | MAP_PTI_MASK; | |
430 | snd_emu10k1_ptr_write(hw, MAPA, ch, temp); | |
431 | snd_emu10k1_ptr_write(hw, MAPB, ch, temp); | |
432 | ||
433 | /* fill cache */ | |
434 | val -= 4; | |
435 | val <<= 25; | |
436 | val |= 0x1c << 16; | |
437 | snd_emu10k1_ptr_write(hw, CCR, ch, val); | |
438 | } | |
439 | #endif | |
440 | ||
441 | /* Q & current address (Q 4bit value, MSB) */ | |
442 | addr = vp->reg.start; | |
443 | temp = vp->reg.parm.filterQ; | |
444 | temp = (temp<<28) | addr; | |
445 | if (vp->apitch < 0xe400) | |
446 | temp |= CCCA_INTERPROM_0; | |
447 | else { | |
448 | unsigned int shift = (vp->apitch - 0xe000) >> 10; | |
449 | temp |= shift << 25; | |
450 | } | |
451 | if (vp->reg.sample_mode & SNDRV_SFNT_SAMPLE_8BITS) | |
452 | temp |= CCCA_8BITSELECT; | |
453 | snd_emu10k1_ptr_write(hw, CCCA, ch, temp); | |
454 | ||
455 | /* reset volume */ | |
456 | temp = (unsigned int)vp->vtarget << 16; | |
457 | snd_emu10k1_ptr_write(hw, VTFT, ch, temp | vp->ftarget); | |
458 | snd_emu10k1_ptr_write(hw, CVCF, ch, temp | 0xff00); | |
459 | return 0; | |
460 | } | |
461 | ||
462 | /* | |
463 | * Start envelope | |
464 | */ | |
465 | static void | |
466 | trigger_voice(snd_emux_voice_t *vp) | |
467 | { | |
468 | unsigned int temp, ptarget; | |
469 | emu10k1_t *hw; | |
470 | emu10k1_memblk_t *emem; | |
471 | ||
472 | hw = vp->hw; | |
473 | ||
474 | emem = (emu10k1_memblk_t *)vp->block; | |
475 | if (! emem || emem->mapped_page < 0) | |
476 | return; /* not mapped */ | |
477 | ||
478 | #if 0 | |
479 | ptarget = (unsigned int)vp->ptarget << 16; | |
480 | #else | |
481 | ptarget = IP_TO_CP(vp->apitch); | |
482 | #endif | |
483 | /* set pitch target and pan (volume) */ | |
484 | temp = ptarget | (vp->apan << 8) | vp->aaux; | |
485 | snd_emu10k1_ptr_write(hw, PTRX, vp->ch, temp); | |
486 | ||
487 | /* pitch target */ | |
488 | snd_emu10k1_ptr_write(hw, CPF, vp->ch, ptarget); | |
489 | ||
490 | /* trigger voice */ | |
491 | snd_emu10k1_ptr_write(hw, DCYSUSV, vp->ch, vp->reg.parm.voldcysus|DCYSUSV_CHANNELENABLE_MASK); | |
492 | } | |
493 | ||
494 | #define MOD_SENSE 18 | |
495 | ||
496 | /* set lfo1 modulation height and cutoff */ | |
497 | static void | |
498 | set_fmmod(emu10k1_t *hw, snd_emux_voice_t *vp) | |
499 | { | |
500 | unsigned short fmmod; | |
501 | short pitch; | |
502 | unsigned char cutoff; | |
503 | int modulation; | |
504 | ||
505 | pitch = (char)(vp->reg.parm.fmmod>>8); | |
506 | cutoff = (vp->reg.parm.fmmod & 0xff); | |
507 | modulation = vp->chan->gm_modulation + vp->chan->midi_pressure; | |
508 | pitch += (MOD_SENSE * modulation) / 1200; | |
509 | LIMITVALUE(pitch, -128, 127); | |
510 | fmmod = ((unsigned char)pitch<<8) | cutoff; | |
511 | snd_emu10k1_ptr_write(hw, FMMOD, vp->ch, fmmod); | |
512 | } | |
513 | ||
514 | /* set lfo2 pitch & frequency */ | |
515 | static void | |
516 | set_fm2frq2(emu10k1_t *hw, snd_emux_voice_t *vp) | |
517 | { | |
518 | unsigned short fm2frq2; | |
519 | short pitch; | |
520 | unsigned char freq; | |
521 | int modulation; | |
522 | ||
523 | pitch = (char)(vp->reg.parm.fm2frq2>>8); | |
524 | freq = vp->reg.parm.fm2frq2 & 0xff; | |
525 | modulation = vp->chan->gm_modulation + vp->chan->midi_pressure; | |
526 | pitch += (MOD_SENSE * modulation) / 1200; | |
527 | LIMITVALUE(pitch, -128, 127); | |
528 | fm2frq2 = ((unsigned char)pitch<<8) | freq; | |
529 | snd_emu10k1_ptr_write(hw, FM2FRQ2, vp->ch, fm2frq2); | |
530 | } | |
531 | ||
532 | /* set filterQ */ | |
533 | static void | |
534 | set_filterQ(emu10k1_t *hw, snd_emux_voice_t *vp) | |
535 | { | |
536 | unsigned int val; | |
537 | val = snd_emu10k1_ptr_read(hw, CCCA, vp->ch) & ~CCCA_RESONANCE; | |
538 | val |= (vp->reg.parm.filterQ << 28); | |
539 | snd_emu10k1_ptr_write(hw, CCCA, vp->ch, val); | |
540 | } |