2 * synth callback routines for the emu8000 (AWE32/64)
4 * Copyright (C) 1999 Steve Ratcliffe
5 * Copyright (C) 1999-2000 Takashi Iwai <tiwai@suse.de>
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22 #include "emu8000_local.h"
23 #include <sound/asoundef.h>
28 static struct snd_emux_voice *get_voice(struct snd_emux *emu,
29 struct snd_emux_port *port);
30 static int start_voice(struct snd_emux_voice *vp);
31 static void trigger_voice(struct snd_emux_voice *vp);
32 static void release_voice(struct snd_emux_voice *vp);
33 static void update_voice(struct snd_emux_voice *vp, int update);
34 static void reset_voice(struct snd_emux *emu, int ch);
35 static void terminate_voice(struct snd_emux_voice *vp);
36 static void sysex(struct snd_emux *emu, char *buf, int len, int parsed,
37 struct snd_midi_channel_set *chset);
38 #ifdef CONFIG_SND_SEQUENCER_OSS
39 static int oss_ioctl(struct snd_emux *emu, int cmd, int p1, int p2);
41 static int load_fx(struct snd_emux *emu, int type, int mode,
42 const void __user *buf, long len);
44 static void set_pitch(struct snd_emu8000 *hw, struct snd_emux_voice *vp);
45 static void set_volume(struct snd_emu8000 *hw, struct snd_emux_voice *vp);
46 static void set_pan(struct snd_emu8000 *hw, struct snd_emux_voice *vp);
47 static void set_fmmod(struct snd_emu8000 *hw, struct snd_emux_voice *vp);
48 static void set_tremfreq(struct snd_emu8000 *hw, struct snd_emux_voice *vp);
49 static void set_fm2frq2(struct snd_emu8000 *hw, struct snd_emux_voice *vp);
50 static void set_filterQ(struct snd_emu8000 *hw, struct snd_emux_voice *vp);
51 static void snd_emu8000_tweak_voice(struct snd_emu8000 *emu, int ch);
54 * Ensure a value is between two points
55 * macro evaluates its args more than once, so changed to upper-case.
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)
64 static struct snd_emux_operators emu8000_ops = {
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,
73 .sample_new = snd_emu8000_sample_new,
74 .sample_free = snd_emu8000_sample_free,
75 .sample_reset = snd_emu8000_sample_reset,
78 #ifdef CONFIG_SND_SEQUENCER_OSS
79 .oss_ioctl = oss_ioctl,
84 snd_emu8000_ops_setup(struct snd_emu8000 *hw)
86 hw->emu->ops = emu8000_ops;
95 release_voice(struct snd_emux_voice *vp)
98 struct snd_emu8000 *hw;
101 dcysusv = 0x8000 | (unsigned char)vp->reg.parm.modrelease;
102 EMU8000_DCYSUS_WRITE(hw, vp->ch, dcysusv);
103 dcysusv = 0x8000 | (unsigned char)vp->reg.parm.volrelease;
104 EMU8000_DCYSUSV_WRITE(hw, vp->ch, dcysusv);
111 terminate_voice(struct snd_emux_voice *vp)
113 struct snd_emu8000 *hw;
116 EMU8000_DCYSUSV_WRITE(hw, vp->ch, 0x807F);
123 update_voice(struct snd_emux_voice *vp, int update)
125 struct snd_emu8000 *hw;
128 if (update & SNDRV_EMUX_UPDATE_VOLUME)
130 if (update & SNDRV_EMUX_UPDATE_PITCH)
132 if ((update & SNDRV_EMUX_UPDATE_PAN) &&
133 vp->port->ctrls[EMUX_MD_REALTIME_PAN])
135 if (update & SNDRV_EMUX_UPDATE_FMMOD)
137 if (update & SNDRV_EMUX_UPDATE_TREMFREQ)
138 set_tremfreq(hw, vp);
139 if (update & SNDRV_EMUX_UPDATE_FM2FRQ2)
141 if (update & SNDRV_EMUX_UPDATE_Q)
147 * Find a channel (voice) within the EMU that is not in use or at least
148 * less in use than other channels. Always returns a valid pointer
149 * no matter what. If there is a real shortage of voices then one
150 * will be cut. Such is life.
152 * The channel index (vp->ch) must be initialized in this routine.
153 * In Emu8k, it is identical with the array index.
155 static struct snd_emux_voice *
156 get_voice(struct snd_emux *emu, struct snd_emux_port *port)
159 struct snd_emux_voice *vp;
160 struct snd_emu8000 *hw;
162 /* what we are looking for, in order of preference */
164 OFF=0, RELEASED, PLAYING, END
167 /* Keeps track of what we are finding */
176 for (i = 0; i < END; i++) {
177 best[i].time = (unsigned int)(-1); /* XXX MAX_?INT really */;
182 * Go through them all and get a best one to use.
184 for (i = 0; i < emu->max_voices; i++) {
187 vp = &emu->voices[i];
190 if (state == SNDRV_EMUX_ST_OFF)
192 else if (state == SNDRV_EMUX_ST_RELEASED ||
193 state == SNDRV_EMUX_ST_PENDING) {
194 bp = best + RELEASED;
195 val = (EMU8000_CVCF_READ(hw, vp->ch) >> 16) & 0xffff;
199 else if (state & SNDRV_EMUX_ST_ON)
204 /* check if sample is finished playing (non-looping only) */
205 if (state != SNDRV_EMUX_ST_OFF &&
206 (vp->reg.sample_mode & SNDRV_SFNT_SAMPLE_SINGLESHOT)) {
207 val = EMU8000_CCCA_READ(hw, vp->ch) & 0xffffff;
208 if (val >= vp->reg.loopstart)
212 if (vp->time < bp->time) {
218 for (i = 0; i < END; i++) {
219 if (best[i].voice >= 0) {
220 vp = &emu->voices[best[i].voice];
221 vp->ch = best[i].voice;
233 start_voice(struct snd_emux_voice *vp)
238 struct snd_midi_channel *chan;
239 struct snd_emu8000 *hw;
245 /* channel to be silent and idle */
246 EMU8000_DCYSUSV_WRITE(hw, ch, 0x0080);
247 EMU8000_VTFT_WRITE(hw, ch, 0x0000FFFF);
248 EMU8000_CVCF_WRITE(hw, ch, 0x0000FFFF);
249 EMU8000_PTRX_WRITE(hw, ch, 0);
250 EMU8000_CPF_WRITE(hw, ch, 0);
252 /* set pitch offset */
255 /* set envelope parameters */
256 EMU8000_ENVVAL_WRITE(hw, ch, vp->reg.parm.moddelay);
257 EMU8000_ATKHLD_WRITE(hw, ch, vp->reg.parm.modatkhld);
258 EMU8000_DCYSUS_WRITE(hw, ch, vp->reg.parm.moddcysus);
259 EMU8000_ENVVOL_WRITE(hw, ch, vp->reg.parm.voldelay);
260 EMU8000_ATKHLDV_WRITE(hw, ch, vp->reg.parm.volatkhld);
261 /* decay/sustain parameter for volume envelope is used
262 for triggerg the voice */
264 /* cutoff and volume */
267 /* modulation envelope heights */
268 EMU8000_PEFE_WRITE(hw, ch, vp->reg.parm.pefe);
271 EMU8000_LFO1VAL_WRITE(hw, ch, vp->reg.parm.lfo1delay);
272 EMU8000_LFO2VAL_WRITE(hw, ch, vp->reg.parm.lfo2delay);
274 /* lfo1 pitch & cutoff shift */
276 /* lfo1 volume & freq */
277 set_tremfreq(hw, vp);
278 /* lfo2 pitch & freq */
280 /* pan & loop start */
283 /* chorus & loop end (chorus 8bit, MSB) */
284 addr = vp->reg.loopend - 1;
285 temp = vp->reg.parm.chorus;
286 temp += (int)chan->control[MIDI_CTL_E3_CHORUS_DEPTH] * 9 / 10;
288 temp = (temp <<24) | (unsigned int)addr;
289 EMU8000_CSL_WRITE(hw, ch, temp);
291 /* Q & current address (Q 4bit value, MSB) */
292 addr = vp->reg.start - 1;
293 temp = vp->reg.parm.filterQ;
294 temp = (temp<<28) | (unsigned int)addr;
295 EMU8000_CCCA_WRITE(hw, ch, temp);
297 /* clear unknown registers */
298 EMU8000_00A0_WRITE(hw, ch, 0);
299 EMU8000_0080_WRITE(hw, ch, 0);
302 temp = vp->vtarget << 16;
303 EMU8000_VTFT_WRITE(hw, ch, temp | vp->ftarget);
304 EMU8000_CVCF_WRITE(hw, ch, temp | 0xff00);
313 trigger_voice(struct snd_emux_voice *vp)
317 struct snd_emu8000 *hw;
321 /* set reverb and pitch target */
322 temp = vp->reg.parm.reverb;
323 temp += (int)vp->chan->control[MIDI_CTL_E1_REVERB_DEPTH] * 9 / 10;
325 temp = (temp << 8) | (vp->ptarget << 16) | vp->aaux;
326 EMU8000_PTRX_WRITE(hw, ch, temp);
327 EMU8000_CPF_WRITE(hw, ch, vp->ptarget << 16);
328 EMU8000_DCYSUSV_WRITE(hw, ch, vp->reg.parm.voldcysus);
332 * reset voice parameters
335 reset_voice(struct snd_emux *emu, int ch)
337 struct snd_emu8000 *hw;
340 EMU8000_DCYSUSV_WRITE(hw, ch, 0x807F);
341 snd_emu8000_tweak_voice(hw, ch);
345 * Set the pitch of a possibly playing note.
348 set_pitch(struct snd_emu8000 *hw, struct snd_emux_voice *vp)
350 EMU8000_IP_WRITE(hw, vp->ch, vp->apitch);
354 * Set the volume of a possibly already playing note
357 set_volume(struct snd_emu8000 *hw, struct snd_emux_voice *vp)
361 ifatn = (unsigned char)vp->acutoff;
362 ifatn = (ifatn << 8);
363 ifatn |= (unsigned char)vp->avol;
364 EMU8000_IFATN_WRITE(hw, vp->ch, ifatn);
368 * Set pan and loop start address.
371 set_pan(struct snd_emu8000 *hw, struct snd_emux_voice *vp)
375 temp = ((unsigned int)vp->apan<<24) | ((unsigned int)vp->reg.loopstart - 1);
376 EMU8000_PSST_WRITE(hw, vp->ch, temp);
382 set_fmmod(struct snd_emu8000 *hw, struct snd_emux_voice *vp)
384 unsigned short fmmod;
386 unsigned char cutoff;
389 pitch = (char)(vp->reg.parm.fmmod>>8);
390 cutoff = (vp->reg.parm.fmmod & 0xff);
391 modulation = vp->chan->gm_modulation + vp->chan->midi_pressure;
392 pitch += (MOD_SENSE * modulation) / 1200;
393 LIMITVALUE(pitch, -128, 127);
394 fmmod = ((unsigned char)pitch<<8) | cutoff;
395 EMU8000_FMMOD_WRITE(hw, vp->ch, fmmod);
398 /* set tremolo (lfo1) volume & frequency */
400 set_tremfreq(struct snd_emu8000 *hw, struct snd_emux_voice *vp)
402 EMU8000_TREMFRQ_WRITE(hw, vp->ch, vp->reg.parm.tremfrq);
405 /* set lfo2 pitch & frequency */
407 set_fm2frq2(struct snd_emu8000 *hw, struct snd_emux_voice *vp)
409 unsigned short fm2frq2;
414 pitch = (char)(vp->reg.parm.fm2frq2>>8);
415 freq = vp->reg.parm.fm2frq2 & 0xff;
416 modulation = vp->chan->gm_modulation + vp->chan->midi_pressure;
417 pitch += (MOD_SENSE * modulation) / 1200;
418 LIMITVALUE(pitch, -128, 127);
419 fm2frq2 = ((unsigned char)pitch<<8) | freq;
420 EMU8000_FM2FRQ2_WRITE(hw, vp->ch, fm2frq2);
425 set_filterQ(struct snd_emu8000 *hw, struct snd_emux_voice *vp)
428 addr = EMU8000_CCCA_READ(hw, vp->ch) & 0xffffff;
429 addr |= (vp->reg.parm.filterQ << 28);
430 EMU8000_CCCA_WRITE(hw, vp->ch, addr);
434 * set the envelope & LFO parameters to the default values
437 snd_emu8000_tweak_voice(struct snd_emu8000 *emu, int i)
439 /* set all mod/vol envelope shape to minimum */
440 EMU8000_ENVVOL_WRITE(emu, i, 0x8000);
441 EMU8000_ENVVAL_WRITE(emu, i, 0x8000);
442 EMU8000_DCYSUS_WRITE(emu, i, 0x7F7F);
443 EMU8000_ATKHLDV_WRITE(emu, i, 0x7F7F);
444 EMU8000_ATKHLD_WRITE(emu, i, 0x7F7F);
445 EMU8000_PEFE_WRITE(emu, i, 0); /* mod envelope height to zero */
446 EMU8000_LFO1VAL_WRITE(emu, i, 0x8000); /* no delay for LFO1 */
447 EMU8000_LFO2VAL_WRITE(emu, i, 0x8000);
448 EMU8000_IP_WRITE(emu, i, 0xE000); /* no pitch shift */
449 EMU8000_IFATN_WRITE(emu, i, 0xFF00); /* volume to minimum */
450 EMU8000_FMMOD_WRITE(emu, i, 0);
451 EMU8000_TREMFRQ_WRITE(emu, i, 0);
452 EMU8000_FM2FRQ2_WRITE(emu, i, 0);
459 sysex(struct snd_emux *emu, char *buf, int len, int parsed, struct snd_midi_channel_set *chset)
461 struct snd_emu8000 *hw;
466 case SNDRV_MIDI_SYSEX_GS_CHORUS_MODE:
467 hw->chorus_mode = chset->gs_chorus_mode;
468 snd_emu8000_update_chorus_mode(hw);
471 case SNDRV_MIDI_SYSEX_GS_REVERB_MODE:
472 hw->reverb_mode = chset->gs_reverb_mode;
473 snd_emu8000_update_reverb_mode(hw);
479 #ifdef CONFIG_SND_SEQUENCER_OSS
484 oss_ioctl(struct snd_emux *emu, int cmd, int p1, int p2)
486 struct snd_emu8000 *hw;
491 case _EMUX_OSS_REVERB_MODE:
492 hw->reverb_mode = p1;
493 snd_emu8000_update_reverb_mode(hw);
496 case _EMUX_OSS_CHORUS_MODE:
497 hw->chorus_mode = p1;
498 snd_emu8000_update_chorus_mode(hw);
501 case _EMUX_OSS_INITIALIZE_CHIP:
502 /* snd_emu8000_init(hw); */ /*ignored*/
505 case _EMUX_OSS_EQUALIZER:
507 hw->treble_level = p2;
508 snd_emu8000_update_equalizer(hw);
517 * additional patch keys
520 #define SNDRV_EMU8000_LOAD_CHORUS_FX 0x10 /* optarg=mode */
521 #define SNDRV_EMU8000_LOAD_REVERB_FX 0x11 /* optarg=mode */
529 load_fx(struct snd_emux *emu, int type, int mode, const void __user *buf, long len)
531 struct snd_emu8000 *hw;
539 case SNDRV_EMU8000_LOAD_CHORUS_FX:
540 return snd_emu8000_load_chorus_fx(hw, mode, buf, len);
541 case SNDRV_EMU8000_LOAD_REVERB_FX:
542 return snd_emu8000_load_reverb_fx(hw, mode, buf, len);