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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 */ | |
eb4698f3 | 30 | struct best_voice { |
1da177e4 LT |
31 | unsigned int time; |
32 | int voice; | |
eb4698f3 | 33 | }; |
1da177e4 LT |
34 | |
35 | /* | |
36 | * prototypes | |
37 | */ | |
eb4698f3 TI |
38 | static void lookup_voices(struct snd_emux *emu, struct snd_emu10k1 *hw, |
39 | struct best_voice *best, int active_only); | |
40 | static struct snd_emux_voice *get_voice(struct snd_emux *emu, | |
41 | struct snd_emux_port *port); | |
42 | static int start_voice(struct snd_emux_voice *vp); | |
43 | static void trigger_voice(struct snd_emux_voice *vp); | |
44 | static void release_voice(struct snd_emux_voice *vp); | |
45 | static void update_voice(struct snd_emux_voice *vp, int update); | |
46 | static void terminate_voice(struct snd_emux_voice *vp); | |
47 | static void free_voice(struct snd_emux_voice *vp); | |
48 | ||
49 | static void set_fmmod(struct snd_emu10k1 *hw, struct snd_emux_voice *vp); | |
50 | static void set_fm2frq2(struct snd_emu10k1 *hw, struct snd_emux_voice *vp); | |
51 | static void set_filterQ(struct snd_emu10k1 *hw, struct snd_emux_voice *vp); | |
1da177e4 LT |
52 | |
53 | /* | |
54 | * Ensure a value is between two points | |
55 | * macro evaluates its args more than once, so changed to upper-case. | |
56 | */ | |
57 | #define LIMITVALUE(x, a, b) do { if ((x) < (a)) (x) = (a); else if ((x) > (b)) (x) = (b); } while (0) | |
58 | #define LIMITMAX(x, a) do {if ((x) > (a)) (x) = (a); } while (0) | |
59 | ||
60 | ||
61 | /* | |
62 | * set up operators | |
63 | */ | |
eb4698f3 | 64 | static struct snd_emux_operators emu10k1_ops = { |
1da177e4 LT |
65 | .owner = THIS_MODULE, |
66 | .get_voice = get_voice, | |
67 | .prepare = start_voice, | |
68 | .trigger = trigger_voice, | |
69 | .release = release_voice, | |
70 | .update = update_voice, | |
71 | .terminate = terminate_voice, | |
72 | .free_voice = free_voice, | |
73 | .sample_new = snd_emu10k1_sample_new, | |
74 | .sample_free = snd_emu10k1_sample_free, | |
75 | }; | |
76 | ||
77 | void | |
eb4698f3 | 78 | snd_emu10k1_ops_setup(struct snd_emux *emu) |
1da177e4 LT |
79 | { |
80 | emu->ops = emu10k1_ops; | |
81 | } | |
82 | ||
83 | ||
84 | /* | |
85 | * get more voice for pcm | |
86 | * | |
87 | * terminate most inactive voice and give it as a pcm voice. | |
88 | */ | |
89 | int | |
eb4698f3 | 90 | snd_emu10k1_synth_get_voice(struct snd_emu10k1 *hw) |
1da177e4 | 91 | { |
eb4698f3 TI |
92 | struct snd_emux *emu; |
93 | struct snd_emux_voice *vp; | |
94 | struct best_voice best[V_END]; | |
1da177e4 LT |
95 | unsigned long flags; |
96 | int i; | |
97 | ||
98 | emu = hw->synth; | |
99 | ||
100 | spin_lock_irqsave(&emu->voice_lock, flags); | |
101 | lookup_voices(emu, hw, best, 1); /* no OFF voices */ | |
102 | for (i = 0; i < V_END; i++) { | |
103 | if (best[i].voice >= 0) { | |
104 | int ch; | |
105 | vp = &emu->voices[best[i].voice]; | |
106 | if ((ch = vp->ch) < 0) { | |
107 | //printk("synth_get_voice: ch < 0 (%d) ??", i); | |
108 | continue; | |
109 | } | |
110 | vp->emu->num_voices--; | |
111 | vp->ch = -1; | |
112 | vp->state = SNDRV_EMUX_ST_OFF; | |
113 | spin_unlock_irqrestore(&emu->voice_lock, flags); | |
114 | return ch; | |
115 | } | |
116 | } | |
117 | spin_unlock_irqrestore(&emu->voice_lock, flags); | |
118 | ||
119 | /* not found */ | |
120 | return -ENOMEM; | |
121 | } | |
122 | ||
123 | ||
124 | /* | |
125 | * turn off the voice (not terminated) | |
126 | */ | |
127 | static void | |
eb4698f3 | 128 | release_voice(struct snd_emux_voice *vp) |
1da177e4 LT |
129 | { |
130 | int dcysusv; | |
eb4698f3 | 131 | struct snd_emu10k1 *hw; |
1da177e4 LT |
132 | |
133 | hw = vp->hw; | |
134 | dcysusv = 0x8000 | (unsigned char)vp->reg.parm.modrelease; | |
135 | snd_emu10k1_ptr_write(hw, DCYSUSM, vp->ch, dcysusv); | |
136 | dcysusv = 0x8000 | (unsigned char)vp->reg.parm.volrelease | DCYSUSV_CHANNELENABLE_MASK; | |
137 | snd_emu10k1_ptr_write(hw, DCYSUSV, vp->ch, dcysusv); | |
138 | } | |
139 | ||
140 | ||
141 | /* | |
142 | * terminate the voice | |
143 | */ | |
144 | static void | |
eb4698f3 | 145 | terminate_voice(struct snd_emux_voice *vp) |
1da177e4 | 146 | { |
eb4698f3 | 147 | struct snd_emu10k1 *hw; |
1da177e4 LT |
148 | |
149 | snd_assert(vp, return); | |
150 | hw = vp->hw; | |
151 | snd_emu10k1_ptr_write(hw, DCYSUSV, vp->ch, 0x807f | DCYSUSV_CHANNELENABLE_MASK); | |
152 | if (vp->block) { | |
eb4698f3 TI |
153 | struct snd_emu10k1_memblk *emem; |
154 | emem = (struct snd_emu10k1_memblk *)vp->block; | |
1da177e4 LT |
155 | if (emem->map_locked > 0) |
156 | emem->map_locked--; | |
157 | } | |
158 | } | |
159 | ||
160 | /* | |
161 | * release the voice to system | |
162 | */ | |
163 | static void | |
eb4698f3 | 164 | free_voice(struct snd_emux_voice *vp) |
1da177e4 | 165 | { |
eb4698f3 | 166 | struct snd_emu10k1 *hw; |
1da177e4 LT |
167 | |
168 | hw = vp->hw; | |
169 | if (vp->ch >= 0) { | |
170 | snd_emu10k1_ptr_write(hw, IFATN, vp->ch, 0xff00); | |
171 | snd_emu10k1_ptr_write(hw, DCYSUSV, vp->ch, 0x807f | DCYSUSV_CHANNELENABLE_MASK); | |
172 | // snd_emu10k1_ptr_write(hw, DCYSUSV, vp->ch, 0); | |
173 | snd_emu10k1_ptr_write(hw, VTFT, vp->ch, 0xffff); | |
174 | snd_emu10k1_ptr_write(hw, CVCF, vp->ch, 0xffff); | |
175 | snd_emu10k1_voice_free(hw, &hw->voices[vp->ch]); | |
176 | vp->emu->num_voices--; | |
177 | vp->ch = -1; | |
178 | } | |
179 | } | |
180 | ||
181 | ||
182 | /* | |
183 | * update registers | |
184 | */ | |
185 | static void | |
eb4698f3 | 186 | update_voice(struct snd_emux_voice *vp, int update) |
1da177e4 | 187 | { |
eb4698f3 | 188 | struct snd_emu10k1 *hw; |
1da177e4 LT |
189 | |
190 | hw = vp->hw; | |
191 | if (update & SNDRV_EMUX_UPDATE_VOLUME) | |
192 | snd_emu10k1_ptr_write(hw, IFATN_ATTENUATION, vp->ch, vp->avol); | |
193 | if (update & SNDRV_EMUX_UPDATE_PITCH) | |
194 | snd_emu10k1_ptr_write(hw, IP, vp->ch, vp->apitch); | |
195 | if (update & SNDRV_EMUX_UPDATE_PAN) { | |
196 | snd_emu10k1_ptr_write(hw, PTRX_FXSENDAMOUNT_A, vp->ch, vp->apan); | |
197 | snd_emu10k1_ptr_write(hw, PTRX_FXSENDAMOUNT_B, vp->ch, vp->aaux); | |
198 | } | |
199 | if (update & SNDRV_EMUX_UPDATE_FMMOD) | |
200 | set_fmmod(hw, vp); | |
201 | if (update & SNDRV_EMUX_UPDATE_TREMFREQ) | |
202 | snd_emu10k1_ptr_write(hw, TREMFRQ, vp->ch, vp->reg.parm.tremfrq); | |
203 | if (update & SNDRV_EMUX_UPDATE_FM2FRQ2) | |
204 | set_fm2frq2(hw, vp); | |
205 | if (update & SNDRV_EMUX_UPDATE_Q) | |
206 | set_filterQ(hw, vp); | |
207 | } | |
208 | ||
209 | ||
210 | /* | |
211 | * look up voice table - get the best voice in order of preference | |
212 | */ | |
213 | /* spinlock held! */ | |
214 | static void | |
eb4698f3 TI |
215 | lookup_voices(struct snd_emux *emu, struct snd_emu10k1 *hw, |
216 | struct best_voice *best, int active_only) | |
1da177e4 | 217 | { |
eb4698f3 TI |
218 | struct snd_emux_voice *vp; |
219 | struct best_voice *bp; | |
1da177e4 LT |
220 | int i; |
221 | ||
222 | for (i = 0; i < V_END; i++) { | |
223 | best[i].time = (unsigned int)-1; /* XXX MAX_?INT really */; | |
224 | best[i].voice = -1; | |
225 | } | |
226 | ||
227 | /* | |
228 | * Go through them all and get a best one to use. | |
229 | * NOTE: could also look at volume and pick the quietest one. | |
230 | */ | |
231 | for (i = 0; i < emu->max_voices; i++) { | |
232 | int state, val; | |
233 | ||
234 | vp = &emu->voices[i]; | |
235 | state = vp->state; | |
236 | if (state == SNDRV_EMUX_ST_OFF) { | |
237 | if (vp->ch < 0) { | |
238 | if (active_only) | |
239 | continue; | |
240 | bp = best + V_FREE; | |
241 | } else | |
242 | bp = best + V_OFF; | |
243 | } | |
244 | else if (state == SNDRV_EMUX_ST_RELEASED || | |
245 | state == SNDRV_EMUX_ST_PENDING) { | |
246 | bp = best + V_RELEASED; | |
fc207733 | 247 | #if 1 |
1da177e4 LT |
248 | val = snd_emu10k1_ptr_read(hw, CVCF_CURRENTVOL, vp->ch); |
249 | if (! val) | |
250 | bp = best + V_OFF; | |
251 | #endif | |
252 | } | |
253 | else if (state == SNDRV_EMUX_ST_STANDBY) | |
254 | continue; | |
255 | else if (state & SNDRV_EMUX_ST_ON) | |
256 | bp = best + V_PLAYING; | |
257 | else | |
258 | continue; | |
259 | ||
260 | /* check if sample is finished playing (non-looping only) */ | |
261 | if (bp != best + V_OFF && bp != best + V_FREE && | |
262 | (vp->reg.sample_mode & SNDRV_SFNT_SAMPLE_SINGLESHOT)) { | |
263 | val = snd_emu10k1_ptr_read(hw, CCCA_CURRADDR, vp->ch); | |
264 | if (val >= vp->reg.loopstart) | |
265 | bp = best + V_OFF; | |
266 | } | |
267 | ||
268 | if (vp->time < bp->time) { | |
269 | bp->time = vp->time; | |
270 | bp->voice = i; | |
271 | } | |
272 | } | |
273 | } | |
274 | ||
275 | /* | |
276 | * get an empty voice | |
277 | * | |
278 | * emu->voice_lock is already held. | |
279 | */ | |
eb4698f3 TI |
280 | static struct snd_emux_voice * |
281 | get_voice(struct snd_emux *emu, struct snd_emux_port *port) | |
1da177e4 | 282 | { |
eb4698f3 TI |
283 | struct snd_emu10k1 *hw; |
284 | struct snd_emux_voice *vp; | |
285 | struct best_voice best[V_END]; | |
1da177e4 LT |
286 | int i; |
287 | ||
288 | hw = emu->hw; | |
289 | ||
290 | lookup_voices(emu, hw, best, 0); | |
291 | for (i = 0; i < V_END; i++) { | |
292 | if (best[i].voice >= 0) { | |
293 | vp = &emu->voices[best[i].voice]; | |
294 | if (vp->ch < 0) { | |
295 | /* allocate a voice */ | |
eb4698f3 | 296 | struct snd_emu10k1_voice *hwvoice; |
1da177e4 LT |
297 | if (snd_emu10k1_voice_alloc(hw, EMU10K1_SYNTH, 1, &hwvoice) < 0 || hwvoice == NULL) |
298 | continue; | |
299 | vp->ch = hwvoice->number; | |
300 | emu->num_voices++; | |
301 | } | |
302 | return vp; | |
303 | } | |
304 | } | |
305 | ||
306 | /* not found */ | |
307 | return NULL; | |
308 | } | |
309 | ||
310 | /* | |
311 | * prepare envelopes and LFOs | |
312 | */ | |
313 | static int | |
eb4698f3 | 314 | start_voice(struct snd_emux_voice *vp) |
1da177e4 LT |
315 | { |
316 | unsigned int temp; | |
317 | int ch; | |
318 | unsigned int addr, mapped_offset; | |
eb4698f3 TI |
319 | struct snd_midi_channel *chan; |
320 | struct snd_emu10k1 *hw; | |
321 | struct snd_emu10k1_memblk *emem; | |
1da177e4 LT |
322 | |
323 | hw = vp->hw; | |
324 | ch = vp->ch; | |
325 | snd_assert(ch >= 0, return -EINVAL); | |
326 | chan = vp->chan; | |
327 | ||
eb4698f3 | 328 | emem = (struct snd_emu10k1_memblk *)vp->block; |
1da177e4 LT |
329 | if (emem == NULL) |
330 | return -EINVAL; | |
331 | emem->map_locked++; | |
332 | if (snd_emu10k1_memblk_map(hw, emem) < 0) { | |
333 | // printk("emu: cannot map!\n"); | |
334 | return -ENOMEM; | |
335 | } | |
336 | mapped_offset = snd_emu10k1_memblk_offset(emem) >> 1; | |
337 | vp->reg.start += mapped_offset; | |
338 | vp->reg.end += mapped_offset; | |
339 | vp->reg.loopstart += mapped_offset; | |
340 | vp->reg.loopend += mapped_offset; | |
341 | ||
342 | /* set channel routing */ | |
343 | /* A = left(0), B = right(1), C = reverb(c), D = chorus(d) */ | |
344 | if (hw->audigy) { | |
345 | temp = FXBUS_MIDI_LEFT | (FXBUS_MIDI_RIGHT << 8) | | |
346 | (FXBUS_MIDI_REVERB << 16) | (FXBUS_MIDI_CHORUS << 24); | |
347 | snd_emu10k1_ptr_write(hw, A_FXRT1, ch, temp); | |
348 | } else { | |
349 | temp = (FXBUS_MIDI_LEFT << 16) | (FXBUS_MIDI_RIGHT << 20) | | |
350 | (FXBUS_MIDI_REVERB << 24) | (FXBUS_MIDI_CHORUS << 28); | |
351 | snd_emu10k1_ptr_write(hw, FXRT, ch, temp); | |
352 | } | |
353 | ||
354 | /* channel to be silent and idle */ | |
fc207733 | 355 | snd_emu10k1_ptr_write(hw, DCYSUSV, ch, 0x0000); |
1da177e4 LT |
356 | snd_emu10k1_ptr_write(hw, VTFT, ch, 0x0000FFFF); |
357 | snd_emu10k1_ptr_write(hw, CVCF, ch, 0x0000FFFF); | |
358 | snd_emu10k1_ptr_write(hw, PTRX, ch, 0); | |
359 | snd_emu10k1_ptr_write(hw, CPF, ch, 0); | |
360 | ||
361 | /* set pitch offset */ | |
362 | snd_emu10k1_ptr_write(hw, IP, vp->ch, vp->apitch); | |
363 | ||
364 | /* set envelope parameters */ | |
365 | snd_emu10k1_ptr_write(hw, ENVVAL, ch, vp->reg.parm.moddelay); | |
366 | snd_emu10k1_ptr_write(hw, ATKHLDM, ch, vp->reg.parm.modatkhld); | |
367 | snd_emu10k1_ptr_write(hw, DCYSUSM, ch, vp->reg.parm.moddcysus); | |
368 | snd_emu10k1_ptr_write(hw, ENVVOL, ch, vp->reg.parm.voldelay); | |
369 | snd_emu10k1_ptr_write(hw, ATKHLDV, ch, vp->reg.parm.volatkhld); | |
370 | /* decay/sustain parameter for volume envelope is used | |
371 | for triggerg the voice */ | |
372 | ||
373 | /* cutoff and volume */ | |
374 | temp = (unsigned int)vp->acutoff << 8 | (unsigned char)vp->avol; | |
375 | snd_emu10k1_ptr_write(hw, IFATN, vp->ch, temp); | |
376 | ||
377 | /* modulation envelope heights */ | |
378 | snd_emu10k1_ptr_write(hw, PEFE, ch, vp->reg.parm.pefe); | |
379 | ||
380 | /* lfo1/2 delay */ | |
381 | snd_emu10k1_ptr_write(hw, LFOVAL1, ch, vp->reg.parm.lfo1delay); | |
382 | snd_emu10k1_ptr_write(hw, LFOVAL2, ch, vp->reg.parm.lfo2delay); | |
383 | ||
384 | /* lfo1 pitch & cutoff shift */ | |
385 | set_fmmod(hw, vp); | |
386 | /* lfo1 volume & freq */ | |
387 | snd_emu10k1_ptr_write(hw, TREMFRQ, vp->ch, vp->reg.parm.tremfrq); | |
388 | /* lfo2 pitch & freq */ | |
389 | set_fm2frq2(hw, vp); | |
390 | ||
391 | /* reverb and loop start (reverb 8bit, MSB) */ | |
392 | temp = vp->reg.parm.reverb; | |
393 | temp += (int)vp->chan->control[MIDI_CTL_E1_REVERB_DEPTH] * 9 / 10; | |
394 | LIMITMAX(temp, 255); | |
395 | addr = vp->reg.loopstart; | |
396 | snd_emu10k1_ptr_write(hw, PSST, vp->ch, (temp << 24) | addr); | |
397 | ||
398 | /* chorus & loop end (chorus 8bit, MSB) */ | |
399 | addr = vp->reg.loopend; | |
400 | temp = vp->reg.parm.chorus; | |
401 | temp += (int)chan->control[MIDI_CTL_E3_CHORUS_DEPTH] * 9 / 10; | |
402 | LIMITMAX(temp, 255); | |
403 | temp = (temp <<24) | addr; | |
404 | snd_emu10k1_ptr_write(hw, DSL, ch, temp); | |
405 | ||
406 | /* clear filter delay memory */ | |
407 | snd_emu10k1_ptr_write(hw, Z1, ch, 0); | |
408 | snd_emu10k1_ptr_write(hw, Z2, ch, 0); | |
409 | ||
410 | /* invalidate maps */ | |
411 | temp = (hw->silent_page.addr << 1) | MAP_PTI_MASK; | |
412 | snd_emu10k1_ptr_write(hw, MAPA, ch, temp); | |
413 | snd_emu10k1_ptr_write(hw, MAPB, ch, temp); | |
414 | #if 0 | |
415 | /* cache */ | |
416 | { | |
417 | unsigned int val, sample; | |
418 | val = 32; | |
419 | if (vp->reg.sample_mode & SNDRV_SFNT_SAMPLE_8BITS) | |
420 | sample = 0x80808080; | |
421 | else { | |
422 | sample = 0; | |
423 | val *= 2; | |
424 | } | |
425 | ||
426 | /* cache */ | |
427 | snd_emu10k1_ptr_write(hw, CCR, ch, 0x1c << 16); | |
428 | snd_emu10k1_ptr_write(hw, CDE, ch, sample); | |
429 | snd_emu10k1_ptr_write(hw, CDF, ch, sample); | |
430 | ||
431 | /* invalidate maps */ | |
432 | temp = ((unsigned int)hw->silent_page.addr << 1) | MAP_PTI_MASK; | |
433 | snd_emu10k1_ptr_write(hw, MAPA, ch, temp); | |
434 | snd_emu10k1_ptr_write(hw, MAPB, ch, temp); | |
435 | ||
436 | /* fill cache */ | |
437 | val -= 4; | |
438 | val <<= 25; | |
439 | val |= 0x1c << 16; | |
440 | snd_emu10k1_ptr_write(hw, CCR, ch, val); | |
441 | } | |
442 | #endif | |
443 | ||
444 | /* Q & current address (Q 4bit value, MSB) */ | |
445 | addr = vp->reg.start; | |
446 | temp = vp->reg.parm.filterQ; | |
447 | temp = (temp<<28) | addr; | |
448 | if (vp->apitch < 0xe400) | |
449 | temp |= CCCA_INTERPROM_0; | |
450 | else { | |
451 | unsigned int shift = (vp->apitch - 0xe000) >> 10; | |
452 | temp |= shift << 25; | |
453 | } | |
454 | if (vp->reg.sample_mode & SNDRV_SFNT_SAMPLE_8BITS) | |
455 | temp |= CCCA_8BITSELECT; | |
456 | snd_emu10k1_ptr_write(hw, CCCA, ch, temp); | |
457 | ||
458 | /* reset volume */ | |
459 | temp = (unsigned int)vp->vtarget << 16; | |
460 | snd_emu10k1_ptr_write(hw, VTFT, ch, temp | vp->ftarget); | |
461 | snd_emu10k1_ptr_write(hw, CVCF, ch, temp | 0xff00); | |
462 | return 0; | |
463 | } | |
464 | ||
465 | /* | |
466 | * Start envelope | |
467 | */ | |
468 | static void | |
eb4698f3 | 469 | trigger_voice(struct snd_emux_voice *vp) |
1da177e4 LT |
470 | { |
471 | unsigned int temp, ptarget; | |
eb4698f3 TI |
472 | struct snd_emu10k1 *hw; |
473 | struct snd_emu10k1_memblk *emem; | |
1da177e4 LT |
474 | |
475 | hw = vp->hw; | |
476 | ||
eb4698f3 | 477 | emem = (struct snd_emu10k1_memblk *)vp->block; |
1da177e4 LT |
478 | if (! emem || emem->mapped_page < 0) |
479 | return; /* not mapped */ | |
480 | ||
481 | #if 0 | |
482 | ptarget = (unsigned int)vp->ptarget << 16; | |
483 | #else | |
484 | ptarget = IP_TO_CP(vp->apitch); | |
485 | #endif | |
486 | /* set pitch target and pan (volume) */ | |
487 | temp = ptarget | (vp->apan << 8) | vp->aaux; | |
488 | snd_emu10k1_ptr_write(hw, PTRX, vp->ch, temp); | |
489 | ||
490 | /* pitch target */ | |
491 | snd_emu10k1_ptr_write(hw, CPF, vp->ch, ptarget); | |
492 | ||
493 | /* trigger voice */ | |
494 | snd_emu10k1_ptr_write(hw, DCYSUSV, vp->ch, vp->reg.parm.voldcysus|DCYSUSV_CHANNELENABLE_MASK); | |
495 | } | |
496 | ||
497 | #define MOD_SENSE 18 | |
498 | ||
499 | /* set lfo1 modulation height and cutoff */ | |
500 | static void | |
eb4698f3 | 501 | set_fmmod(struct snd_emu10k1 *hw, struct snd_emux_voice *vp) |
1da177e4 LT |
502 | { |
503 | unsigned short fmmod; | |
504 | short pitch; | |
505 | unsigned char cutoff; | |
506 | int modulation; | |
507 | ||
508 | pitch = (char)(vp->reg.parm.fmmod>>8); | |
509 | cutoff = (vp->reg.parm.fmmod & 0xff); | |
510 | modulation = vp->chan->gm_modulation + vp->chan->midi_pressure; | |
511 | pitch += (MOD_SENSE * modulation) / 1200; | |
512 | LIMITVALUE(pitch, -128, 127); | |
513 | fmmod = ((unsigned char)pitch<<8) | cutoff; | |
514 | snd_emu10k1_ptr_write(hw, FMMOD, vp->ch, fmmod); | |
515 | } | |
516 | ||
517 | /* set lfo2 pitch & frequency */ | |
518 | static void | |
eb4698f3 | 519 | set_fm2frq2(struct snd_emu10k1 *hw, struct snd_emux_voice *vp) |
1da177e4 LT |
520 | { |
521 | unsigned short fm2frq2; | |
522 | short pitch; | |
523 | unsigned char freq; | |
524 | int modulation; | |
525 | ||
526 | pitch = (char)(vp->reg.parm.fm2frq2>>8); | |
527 | freq = vp->reg.parm.fm2frq2 & 0xff; | |
528 | modulation = vp->chan->gm_modulation + vp->chan->midi_pressure; | |
529 | pitch += (MOD_SENSE * modulation) / 1200; | |
530 | LIMITVALUE(pitch, -128, 127); | |
531 | fm2frq2 = ((unsigned char)pitch<<8) | freq; | |
532 | snd_emu10k1_ptr_write(hw, FM2FRQ2, vp->ch, fm2frq2); | |
533 | } | |
534 | ||
535 | /* set filterQ */ | |
536 | static void | |
eb4698f3 | 537 | set_filterQ(struct snd_emu10k1 *hw, struct snd_emux_voice *vp) |
1da177e4 LT |
538 | { |
539 | unsigned int val; | |
540 | val = snd_emu10k1_ptr_read(hw, CCCA, vp->ch) & ~CCCA_RESONANCE; | |
541 | val |= (vp->reg.parm.filterQ << 28); | |
542 | snd_emu10k1_ptr_write(hw, CCCA, vp->ch, val); | |
543 | } |