sound/synth/emux/emux_nrpn.c

   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         snd_assert(port != NULL, return);
 293         snd_assert(chan != NULL, 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         snd_assert(port != NULL, return);
 383         snd_assert(chset != NULL, 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