1 /*
2 * NRPN / SYSEX callbacks for Emu8k/Emu10k1
3 *
4 * Copyright (c) 1999-2000 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
22 #include "emux_voice.h"
23 #include <sound/asoundef.h>
24
25 /*
26 * conversion from NRPN/control parameters to Emu8000 raw parameters
27 */
28
29 /* NRPN / CC -> Emu8000 parameter converter */
30 struct nrpn_conv_table {
31 int control;
32 int effect;
33 int (*convert)(int val);
34 };
35
36 /* effect sensitivity */
37
38 #define FX_CUTOFF 0
39 #define FX_RESONANCE 1
40 #define FX_ATTACK 2
41 #define FX_RELEASE 3
42 #define FX_VIBRATE 4
43 #define FX_VIBDEPTH 5
44 #define FX_VIBDELAY 6
45 #define FX_NUMS 7
46
47 /*
48 * convert NRPN/control values
49 */
50
send_converted_effect(const struct nrpn_conv_table * table,int num_tables,struct snd_emux_port * port,struct snd_midi_channel * chan,int type,int val,int mode)51 static int send_converted_effect(const struct nrpn_conv_table *table,
52 int num_tables,
53 struct snd_emux_port *port,
54 struct snd_midi_channel *chan,
55 int type, int val, int mode)
56 {
57 int i, cval;
58 for (i = 0; i < num_tables; i++) {
59 if (table[i].control == type) {
60 cval = table[i].convert(val);
61 snd_emux_send_effect(port, chan, table[i].effect,
62 cval, mode);
63 return 1;
64 }
65 }
66 return 0;
67 }
68
69 #define DEF_FX_CUTOFF 170
70 #define DEF_FX_RESONANCE 6
71 #define DEF_FX_ATTACK 50
72 #define DEF_FX_RELEASE 50
73 #define DEF_FX_VIBRATE 30
74 #define DEF_FX_VIBDEPTH 4
75 #define DEF_FX_VIBDELAY 1500
76
77 /* effect sensitivities for GS NRPN:
78 * adjusted for chaos 8MB soundfonts
79 */
80 static int gs_sense[] =
81 {
82 DEF_FX_CUTOFF, DEF_FX_RESONANCE, DEF_FX_ATTACK, DEF_FX_RELEASE,
83 DEF_FX_VIBRATE, DEF_FX_VIBDEPTH, DEF_FX_VIBDELAY
84 };
85
86 /* effect sensitivies for XG controls:
87 * adjusted for chaos 8MB soundfonts
88 */
89 static int xg_sense[] =
90 {
91 DEF_FX_CUTOFF, DEF_FX_RESONANCE, DEF_FX_ATTACK, DEF_FX_RELEASE,
92 DEF_FX_VIBRATE, DEF_FX_VIBDEPTH, DEF_FX_VIBDELAY
93 };
94
95
96 /*
97 * AWE32 NRPN effects
98 */
99
100 static int fx_delay(int val);
101 static int fx_attack(int val);
102 static int fx_hold(int val);
103 static int fx_decay(int val);
104 static int fx_the_value(int val);
105 static int fx_twice_value(int val);
106 static int fx_conv_pitch(int val);
107 static int fx_conv_Q(int val);
108
109 /* function for each NRPN */ /* [range] units */
110 #define fx_env1_delay fx_delay /* [0,5900] 4msec */
111 #define fx_env1_attack fx_attack /* [0,5940] 1msec */
112 #define fx_env1_hold fx_hold /* [0,8191] 1msec */
113 #define fx_env1_decay fx_decay /* [0,5940] 4msec */
114 #define fx_env1_release fx_decay /* [0,5940] 4msec */
115 #define fx_env1_sustain fx_the_value /* [0,127] 0.75dB */
116 #define fx_env1_pitch fx_the_value /* [-127,127] 9.375cents */
117 #define fx_env1_cutoff fx_the_value /* [-127,127] 56.25cents */
118
119 #define fx_env2_delay fx_delay /* [0,5900] 4msec */
120 #define fx_env2_attack fx_attack /* [0,5940] 1msec */
121 #define fx_env2_hold fx_hold /* [0,8191] 1msec */
122 #define fx_env2_decay fx_decay /* [0,5940] 4msec */
123 #define fx_env2_release fx_decay /* [0,5940] 4msec */
124 #define fx_env2_sustain fx_the_value /* [0,127] 0.75dB */
125
126 #define fx_lfo1_delay fx_delay /* [0,5900] 4msec */
127 #define fx_lfo1_freq fx_twice_value /* [0,127] 84mHz */
128 #define fx_lfo1_volume fx_twice_value /* [0,127] 0.1875dB */
129 #define fx_lfo1_pitch fx_the_value /* [-127,127] 9.375cents */
130 #define fx_lfo1_cutoff fx_twice_value /* [-64,63] 56.25cents */
131
132 #define fx_lfo2_delay fx_delay /* [0,5900] 4msec */
133 #define fx_lfo2_freq fx_twice_value /* [0,127] 84mHz */
134 #define fx_lfo2_pitch fx_the_value /* [-127,127] 9.375cents */
135
136 #define fx_init_pitch fx_conv_pitch /* [-8192,8192] cents */
137 #define fx_chorus fx_the_value /* [0,255] -- */
138 #define fx_reverb fx_the_value /* [0,255] -- */
139 #define fx_cutoff fx_twice_value /* [0,127] 62Hz */
140 #define fx_filterQ fx_conv_Q /* [0,127] -- */
141
fx_delay(int val)142 static int fx_delay(int val)
143 {
144 return (unsigned short)snd_sf_calc_parm_delay(val);
145 }
146
fx_attack(int val)147 static int fx_attack(int val)
148 {
149 return (unsigned short)snd_sf_calc_parm_attack(val);
150 }
151
fx_hold(int val)152 static int fx_hold(int val)
153 {
154 return (unsigned short)snd_sf_calc_parm_hold(val);
155 }
156
fx_decay(int val)157 static int fx_decay(int val)
158 {
159 return (unsigned short)snd_sf_calc_parm_decay(val);
160 }
161
fx_the_value(int val)162 static int fx_the_value(int val)
163 {
164 return (unsigned short)(val & 0xff);
165 }
166
fx_twice_value(int val)167 static int fx_twice_value(int val)
168 {
169 return (unsigned short)((val * 2) & 0xff);
170 }
171
fx_conv_pitch(int val)172 static int fx_conv_pitch(int val)
173 {
174 return (short)(val * 4096 / 1200);
175 }
176
fx_conv_Q(int val)177 static int fx_conv_Q(int val)
178 {
179 return (unsigned short)((val / 8) & 0xff);
180 }
181
182
183 static const struct nrpn_conv_table awe_effects[] =
184 {
185 { 0, EMUX_FX_LFO1_DELAY, fx_lfo1_delay},
186 { 1, EMUX_FX_LFO1_FREQ, fx_lfo1_freq},
187 { 2, EMUX_FX_LFO2_DELAY, fx_lfo2_delay},
188 { 3, EMUX_FX_LFO2_FREQ, fx_lfo2_freq},
189
190 { 4, EMUX_FX_ENV1_DELAY, fx_env1_delay},
191 { 5, EMUX_FX_ENV1_ATTACK,fx_env1_attack},
192 { 6, EMUX_FX_ENV1_HOLD, fx_env1_hold},
193 { 7, EMUX_FX_ENV1_DECAY, fx_env1_decay},
194 { 8, EMUX_FX_ENV1_SUSTAIN, fx_env1_sustain},
195 { 9, EMUX_FX_ENV1_RELEASE, fx_env1_release},
196
197 {10, EMUX_FX_ENV2_DELAY, fx_env2_delay},
198 {11, EMUX_FX_ENV2_ATTACK, fx_env2_attack},
199 {12, EMUX_FX_ENV2_HOLD, fx_env2_hold},
200 {13, EMUX_FX_ENV2_DECAY, fx_env2_decay},
201 {14, EMUX_FX_ENV2_SUSTAIN, fx_env2_sustain},
202 {15, EMUX_FX_ENV2_RELEASE, fx_env2_release},
203
204 {16, EMUX_FX_INIT_PITCH, fx_init_pitch},
205 {17, EMUX_FX_LFO1_PITCH, fx_lfo1_pitch},
206 {18, EMUX_FX_LFO2_PITCH, fx_lfo2_pitch},
207 {19, EMUX_FX_ENV1_PITCH, fx_env1_pitch},
208 {20, EMUX_FX_LFO1_VOLUME, fx_lfo1_volume},
209 {21, EMUX_FX_CUTOFF, fx_cutoff},
210 {22, EMUX_FX_FILTERQ, fx_filterQ},
211 {23, EMUX_FX_LFO1_CUTOFF, fx_lfo1_cutoff},
212 {24, EMUX_FX_ENV1_CUTOFF, fx_env1_cutoff},
213 {25, EMUX_FX_CHORUS, fx_chorus},
214 {26, EMUX_FX_REVERB, fx_reverb},
215 };
216
217
218 /*
219 * GS(SC88) NRPN effects; still experimental
220 */
221
222 /* cutoff: quarter semitone step, max=255 */
gs_cutoff(int val)223 static int gs_cutoff(int val)
224 {
225 return (val - 64) * gs_sense[FX_CUTOFF] / 50;
226 }
227
228 /* resonance: 0 to 15(max) */
gs_filterQ(int val)229 static int gs_filterQ(int val)
230 {
231 return (val - 64) * gs_sense[FX_RESONANCE] / 50;
232 }
233
234 /* attack: */
gs_attack(int val)235 static int gs_attack(int val)
236 {
237 return -(val - 64) * gs_sense[FX_ATTACK] / 50;
238 }
239
240 /* decay: */
gs_decay(int val)241 static int gs_decay(int val)
242 {
243 return -(val - 64) * gs_sense[FX_RELEASE] / 50;
244 }
245
246 /* release: */
gs_release(int val)247 static int gs_release(int val)
248 {
249 return -(val - 64) * gs_sense[FX_RELEASE] / 50;
250 }
251
252 /* vibrato freq: 0.042Hz step, max=255 */
gs_vib_rate(int val)253 static int gs_vib_rate(int val)
254 {
255 return (val - 64) * gs_sense[FX_VIBRATE] / 50;
256 }
257
258 /* vibrato depth: max=127, 1 octave */
gs_vib_depth(int val)259 static int gs_vib_depth(int val)
260 {
261 return (val - 64) * gs_sense[FX_VIBDEPTH] / 50;
262 }
263
264 /* vibrato delay: -0.725msec step */
gs_vib_delay(int val)265 static int gs_vib_delay(int val)
266 {
267 return -(val - 64) * gs_sense[FX_VIBDELAY] / 50;
268 }
269
270 static const struct nrpn_conv_table gs_effects[] =
271 {
272 {32, EMUX_FX_CUTOFF, gs_cutoff},
273 {33, EMUX_FX_FILTERQ, gs_filterQ},
274 {99, EMUX_FX_ENV2_ATTACK, gs_attack},
275 {100, EMUX_FX_ENV2_DECAY, gs_decay},
276 {102, EMUX_FX_ENV2_RELEASE, gs_release},
277 {8, EMUX_FX_LFO1_FREQ, gs_vib_rate},
278 {9, EMUX_FX_LFO1_VOLUME, gs_vib_depth},
279 {10, EMUX_FX_LFO1_DELAY, gs_vib_delay},
280 };
281
282
283 /*
284 * NRPN events
285 */
286 void
snd_emux_nrpn(void * p,struct snd_midi_channel * chan,struct snd_midi_channel_set * chset)287 snd_emux_nrpn(void *p, struct snd_midi_channel *chan,
288 struct snd_midi_channel_set *chset)
289 {
290 struct snd_emux_port *port;
291
292 port = p;
293 if (snd_BUG_ON(!port || !chan))
294 return;
295
296 if (chan->control[MIDI_CTL_NONREG_PARM_NUM_MSB] == 127 &&
297 chan->control[MIDI_CTL_NONREG_PARM_NUM_LSB] <= 26) {
298 int val;
299 /* Win/DOS AWE32 specific NRPNs */
300 /* both MSB/LSB necessary */
301 val = (chan->control[MIDI_CTL_MSB_DATA_ENTRY] << 7) |
302 chan->control[MIDI_CTL_LSB_DATA_ENTRY];
303 val -= 8192;
304 send_converted_effect
305 (awe_effects, ARRAY_SIZE(awe_effects),
306 port, chan, chan->control[MIDI_CTL_NONREG_PARM_NUM_LSB],
307 val, EMUX_FX_FLAG_SET);
308 return;
309 }
310
311 if (port->chset.midi_mode == SNDRV_MIDI_MODE_GS &&
312 chan->control[MIDI_CTL_NONREG_PARM_NUM_MSB] == 1) {
313 int val;
314 /* GS specific NRPNs */
315 /* only MSB is valid */
316 val = chan->control[MIDI_CTL_MSB_DATA_ENTRY];
317 send_converted_effect
318 (gs_effects, ARRAY_SIZE(gs_effects),
319 port, chan, chan->control[MIDI_CTL_NONREG_PARM_NUM_LSB],
320 val, EMUX_FX_FLAG_ADD);
321 return;
322 }
323 }
324
325
326 /*
327 * XG control effects; still experimental
328 */
329
330 /* cutoff: quarter semitone step, max=255 */
xg_cutoff(int val)331 static int xg_cutoff(int val)
332 {
333 return (val - 64) * xg_sense[FX_CUTOFF] / 64;
334 }
335
336 /* resonance: 0(open) to 15(most nasal) */
xg_filterQ(int val)337 static int xg_filterQ(int val)
338 {
339 return (val - 64) * xg_sense[FX_RESONANCE] / 64;
340 }
341
342 /* attack: */
xg_attack(int val)343 static int xg_attack(int val)
344 {
345 return -(val - 64) * xg_sense[FX_ATTACK] / 64;
346 }
347
348 /* release: */
xg_release(int val)349 static int xg_release(int val)
350 {
351 return -(val - 64) * xg_sense[FX_RELEASE] / 64;
352 }
353
354 static const struct nrpn_conv_table xg_effects[] =
355 {
356 {71, EMUX_FX_CUTOFF, xg_cutoff},
357 {74, EMUX_FX_FILTERQ, xg_filterQ},
358 {72, EMUX_FX_ENV2_RELEASE, xg_release},
359 {73, EMUX_FX_ENV2_ATTACK, xg_attack},
360 };
361
362 int
snd_emux_xg_control(struct snd_emux_port * port,struct snd_midi_channel * chan,int param)363 snd_emux_xg_control(struct snd_emux_port *port, struct snd_midi_channel *chan,
364 int param)
365 {
366 return send_converted_effect(xg_effects, ARRAY_SIZE(xg_effects),
367 port, chan, param,
368 chan->control[param],
369 EMUX_FX_FLAG_ADD);
370 }
371
372 /*
373 * receive sysex
374 */
375 void
snd_emux_sysex(void * p,unsigned char * buf,int len,int parsed,struct snd_midi_channel_set * chset)376 snd_emux_sysex(void *p, unsigned char *buf, int len, int parsed,
377 struct snd_midi_channel_set *chset)
378 {
379 struct snd_emux_port *port;
380 struct snd_emux *emu;
381
382 port = p;
383 if (snd_BUG_ON(!port || !chset))
384 return;
385 emu = port->emu;
386
387 switch (parsed) {
388 case SNDRV_MIDI_SYSEX_GS_MASTER_VOLUME:
389 snd_emux_update_port(port, SNDRV_EMUX_UPDATE_VOLUME);
390 break;
391 default:
392 if (emu->ops.sysex)
393 emu->ops.sysex(emu, buf, len, parsed, chset);
394 break;
395 }
396 }
397
398