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