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