git.oblomov.eu Git - linux-2.6/blob - sound/isa/gus/gus_simple.c

   1 /*
   2  *  Routines for Gravis UltraSound soundcards - Simple instrument handlers
   3  *  Copyright (c) by Jaroslav Kysela <perex@suse.cz>
   4  *
   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 <sound/driver.h>
  23 #include <linux/time.h>
  24 #include <sound/core.h>
  25 #include <sound/gus.h>
  26 #include "gus_tables.h"
  27
  28 /*
  29  *
  30  */
  31
  32 static void interrupt_wave(struct snd_gus_card *gus, struct snd_gus_voice *voice);
  33 static void interrupt_volume(struct snd_gus_card *gus, struct snd_gus_voice *voice);
  34 static void interrupt_effect(struct snd_gus_card *gus, struct snd_gus_voice *voice);
  35
  36 static void sample_start(struct snd_gus_card *gus, struct snd_gus_voice *voice, snd_seq_position_t position);
  37 static void sample_stop(struct snd_gus_card *gus, struct snd_gus_voice *voice, int mode);
  38 static void sample_freq(struct snd_gus_card *gus, struct snd_gus_voice *voice, snd_seq_frequency_t freq);
  39 static void sample_volume(struct snd_gus_card *card, struct snd_gus_voice *voice, struct snd_seq_ev_volume *volume);
  40 static void sample_loop(struct snd_gus_card *card, struct snd_gus_voice *voice, struct snd_seq_ev_loop *loop);
  41 static void sample_pos(struct snd_gus_card *card, struct snd_gus_voice *voice, snd_seq_position_t position);
  42 static void sample_private1(struct snd_gus_card *card, struct snd_gus_voice *voice, unsigned char *data);
  43
  44 static struct snd_gus_sample_ops sample_ops = {
  45         sample_start,
  46         sample_stop,
  47         sample_freq,
  48         sample_volume,
  49         sample_loop,
  50         sample_pos,
  51         sample_private1
  52 };
  53
  54 #if 0
  55
  56 static void note_stop(struct snd_gus_card *gus, struct snd_gus_voice *voice, int wait);
  57 static void note_wait(struct snd_gus_card *gus, struct snd_gus_voice *voice);
  58 static void note_off(struct snd_gus_card *gus, struct snd_gus_voice *voice);
  59 static void note_volume(struct snd_gus_card *card, struct snd_gus_voice *voice);
  60 static void note_pitchbend(struct snd_gus_card *card, struct snd_gus_voice *voice);
  61 static void note_vibrato(struct snd_gus_card *card, struct snd_gus_voice *voice);
  62 static void note_tremolo(struct snd_gus_card *card, struct snd_gus_voice *voice);
  63
  64 static struct snd_gus_note_handlers note_commands = {
  65         note_stop,
  66         note_wait,
  67         note_off,
  68         note_volume,
  69         note_pitchbend,
  70         note_vibrato,
  71         note_tremolo
  72 };
  73
  74 static void chn_trigger_down(struct snd_gus_card *card, ultra_channel_t *channel, ultra_instrument_t *instrument, unsigned char note, unsigned char velocity, unsigned char priority );
  75 static void chn_trigger_up( ultra_card_t *card, ultra_note_t *note );
  76 static void chn_control( ultra_card_t *card, ultra_channel_t *channel, unsigned short p1, unsigned short p2 );
  77
  78 static struct ULTRA_STRU_INSTRUMENT_CHANNEL_COMMANDS channel_commands = {
  79   chn_trigger_down,
  80   chn_trigger_up,
  81   chn_control
  82 };
  83
  84 #endif
  85
  86 static void do_volume_envelope(struct snd_gus_card *card, struct snd_gus_voice *voice);
  87 static void do_pan_envelope(struct snd_gus_card *card, struct snd_gus_voice *voice);
  88
  89 /*
  90  *
  91  */
  92
  93 static void interrupt_wave(struct snd_gus_card *gus, struct snd_gus_voice *voice)
  94 {
  95         spin_lock(&gus->event_lock);
  96         snd_gf1_stop_voice(gus, voice->number);
  97         spin_lock(&gus->reg_lock);
  98         snd_gf1_select_voice(gus, voice->number);
  99         snd_gf1_write16(gus, SNDRV_GF1_VW_VOLUME, 0);
 100         spin_unlock(&gus->reg_lock);
 101         voice->flags &= ~SNDRV_GF1_VFLG_RUNNING;
 102         spin_unlock(&gus->event_lock);
 103 }
 104
 105 static void interrupt_volume(struct snd_gus_card *gus, struct snd_gus_voice *voice)
 106 {
 107         spin_lock(&gus->event_lock);
 108         if (voice->flags & SNDRV_GF1_VFLG_RUNNING)
 109                 do_volume_envelope(gus, voice);
 110         else
 111                 snd_gf1_stop_voice(gus, voice->number);
 112         spin_unlock(&gus->event_lock);
 113 }
 114
 115 static void interrupt_effect(struct snd_gus_card *gus, struct snd_gus_voice *voice)
 116 {
 117         spin_lock(&gus->event_lock);
 118         if ((voice->flags & (SNDRV_GF1_VFLG_RUNNING|SNDRV_GF1_VFLG_EFFECT_TIMER1)) ==
 119                             (SNDRV_GF1_VFLG_RUNNING|SNDRV_GF1_VFLG_EFFECT_TIMER1))
 120                 do_pan_envelope(gus, voice);
 121         spin_unlock(&gus->event_lock);
 122 }
 123
 124 /*
 125  *
 126  */
 127
 128 static void do_volume_envelope(struct snd_gus_card *gus, struct snd_gus_voice *voice)
 129 {
 130         unsigned short next, rate, old_volume;
 131         int program_next_ramp;
 132         unsigned long flags;
 133
 134         if (!gus->gf1.volume_ramp) {
 135                 spin_lock_irqsave(&gus->reg_lock, flags);
 136                 snd_gf1_select_voice(gus, voice->number);
 137                 snd_gf1_ctrl_stop(gus, SNDRV_GF1_VB_VOLUME_CONTROL);
 138                 snd_gf1_write16(gus, SNDRV_GF1_VW_VOLUME, voice->gf1_volume);
 139                 /* printk("gf1_volume = 0x%x\n", voice->gf1_volume); */
 140                 spin_unlock_irqrestore(&gus->reg_lock, flags);
 141                 return;
 142         }
 143         program_next_ramp = 0;
 144         rate = next = 0;
 145         while (1) {
 146                 program_next_ramp = 0;
 147                 rate = next = 0;
 148                 switch (voice->venv_state) {
 149                 case VENV_BEFORE:
 150                         voice->venv_state = VENV_ATTACK;
 151                         voice->venv_value_next = 0;
 152                         spin_lock_irqsave(&gus->reg_lock, flags);
 153                         snd_gf1_select_voice(gus, voice->number);
 154                         snd_gf1_ctrl_stop(gus, SNDRV_GF1_VB_VOLUME_CONTROL);
 155                         snd_gf1_write16(gus, SNDRV_GF1_VW_VOLUME, SNDRV_GF1_MIN_VOLUME);
 156                         spin_unlock_irqrestore(&gus->reg_lock, flags);
 157                         break;
 158                 case VENV_ATTACK:
 159                         voice->venv_state = VENV_SUSTAIN;
 160                         program_next_ramp++;
 161                         next = 255;
 162                         rate = gus->gf1.volume_ramp;
 163                         break;
 164                 case VENV_SUSTAIN:
 165                         voice->venv_state = VENV_RELEASE;
 166                         spin_lock_irqsave(&gus->reg_lock, flags);
 167                         snd_gf1_select_voice(gus, voice->number);
 168                         snd_gf1_ctrl_stop(gus, SNDRV_GF1_VB_VOLUME_CONTROL);
 169                         snd_gf1_write16(gus, SNDRV_GF1_VW_VOLUME, ((int)voice->gf1_volume * (int)voice->venv_value_next) / 255);
 170                         spin_unlock_irqrestore(&gus->reg_lock, flags);
 171                         return;
 172                 case VENV_RELEASE:
 173                         voice->venv_state = VENV_DONE;
 174                         program_next_ramp++;
 175                         next = 0;
 176                         rate = gus->gf1.volume_ramp;
 177                         break;
 178                 case VENV_DONE:
 179                         snd_gf1_stop_voice(gus, voice->number);
 180                         voice->flags &= ~SNDRV_GF1_VFLG_RUNNING;
 181                         return;
 182                 case VENV_VOLUME:
 183                         program_next_ramp++;
 184                         next = voice->venv_value_next;
 185                         rate = gus->gf1.volume_ramp;
 186                         voice->venv_state = voice->venv_state_prev;
 187                         break;
 188                 }
 189                 voice->venv_value_next = next;
 190                 if (!program_next_ramp)
 191                         continue;
 192                 spin_lock_irqsave(&gus->reg_lock, flags);
 193                 snd_gf1_select_voice(gus, voice->number);
 194                 snd_gf1_ctrl_stop(gus, SNDRV_GF1_VB_VOLUME_CONTROL);
 195                 old_volume = snd_gf1_read16(gus, SNDRV_GF1_VW_VOLUME) >> 8;
 196                 if (!rate) {
 197                         spin_unlock_irqrestore(&gus->reg_lock, flags);
 198                         continue;
 199                 }
 200                 next = (((int)voice->gf1_volume * (int)next) / 255) >> 8;
 201                 if (old_volume < SNDRV_GF1_MIN_OFFSET)
 202                         old_volume = SNDRV_GF1_MIN_OFFSET;
 203                 if (next < SNDRV_GF1_MIN_OFFSET)
 204                         next = SNDRV_GF1_MIN_OFFSET;
 205                 if (next > SNDRV_GF1_MAX_OFFSET)
 206                         next = SNDRV_GF1_MAX_OFFSET;
 207                 if (old_volume == next) {
 208                         spin_unlock_irqrestore(&gus->reg_lock, flags);
 209                         continue;
 210                 }
 211                 voice->volume_control &= ~0xc3;
 212                 voice->volume_control |= 0x20;
 213                 if (old_volume > next) {
 214                         snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_START, next);
 215                         snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_END, old_volume);
 216                         voice->volume_control |= 0x40;
 217                 } else {
 218                         snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_START, old_volume);
 219                         snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_END, next);
 220                 }
 221                 snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_RATE, rate);
 222                 snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_CONTROL, voice->volume_control);
 223                 if (!gus->gf1.enh_mode) {
 224                         snd_gf1_delay(gus);
 225                         snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_CONTROL, voice->volume_control);
 226                 }
 227                 spin_unlock_irqrestore(&gus->reg_lock, flags);
 228                 return;
 229         }
 230 }
 231
 232 static void do_pan_envelope(struct snd_gus_card *gus, struct snd_gus_voice *voice)
 233 {
 234         unsigned long flags;
 235         unsigned char old_pan;
 236
 237 #if 0
 238         snd_gf1_select_voice(gus, voice->number);
 239         printk(" -%i- do_pan_envelope - flags = 0x%x (0x%x -> 0x%x)\n",
 240                 voice->number,
 241                 voice->flags,
 242                 voice->gf1_pan,
 243                 snd_gf1_i_read8(gus, SNDRV_GF1_VB_PAN) & 0x0f);
 244 #endif
 245         if (gus->gf1.enh_mode) {
 246                 voice->flags &= ~(SNDRV_GF1_VFLG_EFFECT_TIMER1|SNDRV_GF1_VFLG_PAN);
 247                 return;
 248         }
 249         if (!gus->gf1.smooth_pan) {
 250                 spin_lock_irqsave(&gus->reg_lock, flags);
 251                 snd_gf1_select_voice(gus, voice->number);
 252                 snd_gf1_write8(gus, SNDRV_GF1_VB_PAN, voice->gf1_pan);
 253                 spin_unlock_irqrestore(&gus->reg_lock, flags);
 254                 return;
 255         }
 256         if (!(voice->flags & SNDRV_GF1_VFLG_PAN))               /* before */
 257                 voice->flags |= SNDRV_GF1_VFLG_EFFECT_TIMER1|SNDRV_GF1_VFLG_PAN;
 258         spin_lock_irqsave(&gus->reg_lock, flags);
 259         snd_gf1_select_voice(gus, voice->number);
 260         old_pan = snd_gf1_read8(gus, SNDRV_GF1_VB_PAN) & 0x0f;
 261         if (old_pan > voice->gf1_pan )
 262                 old_pan--;
 263         if (old_pan < voice->gf1_pan)
 264                 old_pan++;
 265         snd_gf1_write8(gus, SNDRV_GF1_VB_PAN, old_pan);
 266         spin_unlock_irqrestore(&gus->reg_lock, flags);
 267         if (old_pan == voice->gf1_pan)                  /* the goal was reached */
 268                 voice->flags &= ~(SNDRV_GF1_VFLG_EFFECT_TIMER1|SNDRV_GF1_VFLG_PAN);
 269 #if 0
 270         snd_gf1_select_voice(gus, voice->number);
 271         printk(" -%i- (1) do_pan_envelope - flags = 0x%x (0x%x -> 0x%x)\n",
 272                voice->number,
 273                voice->flags,
 274                voice->gf1_pan,
 275                snd_gf1_i_read8(gus, GF1_VB_PAN) & 0x0f);
 276 #endif
 277 }
 278
 279 static void set_enhanced_pan(struct snd_gus_card *gus, struct snd_gus_voice *voice, unsigned short pan)
 280 {
 281         unsigned long flags;
 282         unsigned short vlo, vro;
 283
 284         vlo = SNDRV_GF1_ATTEN((SNDRV_GF1_ATTEN_TABLE_SIZE-1) - pan);
 285         vro = SNDRV_GF1_ATTEN(pan);
 286         if (pan != SNDRV_GF1_ATTEN_TABLE_SIZE - 1 && pan != 0) {
 287                 vlo >>= 1;
 288                 vro >>= 1;
 289         }
 290         vlo <<= 4;
 291         vro <<= 4;
 292 #if 0
 293         printk("vlo = 0x%x (0x%x), vro = 0x%x (0x%x)\n",
 294                         vlo, snd_gf1_i_read16(gus, GF1_VW_OFFSET_LEFT),
 295                         vro, snd_gf1_i_read16(gus, GF1_VW_OFFSET_RIGHT));
 296 #endif
 297         spin_lock_irqsave(&gus->reg_lock, flags);
 298         snd_gf1_select_voice(gus, voice->number);
 299         snd_gf1_write16(gus, SNDRV_GF1_VW_OFFSET_LEFT_FINAL, vlo);
 300         snd_gf1_write16(gus, SNDRV_GF1_VW_OFFSET_RIGHT_FINAL, vro);
 301         spin_unlock_irqrestore(&gus->reg_lock, flags);
 302         voice->vlo = vlo;
 303         voice->vro = vro;
 304 }
 305
 306 /*
 307  *
 308  */
 309
 310 static void sample_start(struct snd_gus_card *gus, struct snd_gus_voice *voice, snd_seq_position_t position)
 311 {
 312         unsigned long flags;
 313         unsigned int begin, addr, addr_end, addr_start;
 314         int w_16;
 315         struct simple_instrument *simple;
 316         struct snd_seq_kinstr *instr;
 317
 318         instr = snd_seq_instr_find(gus->gf1.ilist, &voice->instr, 0, 1);
 319         if (instr == NULL)
 320                 return;
 321         voice->instr = instr->instr;    /* copy ID to speedup aliases */
 322         simple = KINSTR_DATA(instr);
 323         begin = simple->address.memory << 4;
 324         w_16 = simple->format & SIMPLE_WAVE_16BIT ? 0x04 : 0;
 325         addr_start = simple->loop_start;
 326         if (simple->format & SIMPLE_WAVE_LOOP) {
 327                 addr_end = simple->loop_end;
 328         } else {
 329                 addr_end = (simple->size << 4) - (w_16 ? 40 : 24);
 330         }
 331         if (simple->format & SIMPLE_WAVE_BACKWARD) {
 332                 addr = simple->loop_end;
 333                 if (position < simple->loop_end)
 334                         addr -= position;
 335         } else {
 336                 addr = position;
 337         }
 338         voice->control = 0x00;
 339         voice->mode = 0x20;             /* enable offset registers */
 340         if (simple->format & SIMPLE_WAVE_16BIT)
 341                 voice->control |= 0x04;
 342         if (simple->format & SIMPLE_WAVE_BACKWARD)
 343                 voice->control |= 0x40;
 344         if (simple->format & SIMPLE_WAVE_LOOP) {
 345                 voice->control |= 0x08;
 346         } else {
 347                 voice->control |= 0x20;
 348         }
 349         if (simple->format & SIMPLE_WAVE_BIDIR)
 350                 voice->control |= 0x10;
 351         if (simple->format & SIMPLE_WAVE_ULAW)
 352                 voice->mode |= 0x40;
 353         if (w_16) {
 354                 addr = ((addr << 1) & ~0x1f) | (addr & 0x0f);
 355                 addr_start = ((addr_start << 1) & ~0x1f) | (addr_start & 0x0f);
 356                 addr_end = ((addr_end << 1) & ~0x1f) | (addr_end & 0x0f);
 357         }
 358         addr += begin;
 359         addr_start += begin;
 360         addr_end += begin;
 361         snd_gf1_stop_voice(gus, voice->number);
 362         spin_lock_irqsave(&gus->reg_lock, flags);
 363         snd_gf1_select_voice(gus, voice->number);
 364         snd_gf1_write16(gus, SNDRV_GF1_VW_FREQUENCY, voice->fc_register + voice->fc_lfo);
 365         voice->venv_state = VENV_BEFORE;
 366         voice->volume_control = 0x03;
 367         snd_gf1_write_addr(gus, SNDRV_GF1_VA_START, addr_start, w_16);
 368         snd_gf1_write_addr(gus, SNDRV_GF1_VA_END, addr_end, w_16);
 369         snd_gf1_write_addr(gus, SNDRV_GF1_VA_CURRENT, addr, w_16);
 370         if (!gus->gf1.enh_mode) {
 371                 snd_gf1_write8(gus, SNDRV_GF1_VB_PAN, voice->gf1_pan);
 372         } else {
 373                 snd_gf1_write16(gus, SNDRV_GF1_VW_OFFSET_LEFT, voice->vlo);
 374                 snd_gf1_write16(gus, SNDRV_GF1_VW_OFFSET_LEFT_FINAL, voice->vlo);
 375                 snd_gf1_write16(gus, SNDRV_GF1_VW_OFFSET_RIGHT, voice->vro);
 376                 snd_gf1_write16(gus, SNDRV_GF1_VW_OFFSET_RIGHT_FINAL, voice->vro);
 377                 snd_gf1_write8(gus, SNDRV_GF1_VB_ACCUMULATOR, voice->effect_accumulator);
 378                 snd_gf1_write16(gus, SNDRV_GF1_VW_EFFECT_VOLUME, voice->gf1_effect_volume);
 379                 snd_gf1_write16(gus, SNDRV_GF1_VW_EFFECT_VOLUME_FINAL, voice->gf1_effect_volume);
 380         }
 381         spin_unlock_irqrestore(&gus->reg_lock, flags);
 382         do_volume_envelope(gus, voice);
 383         spin_lock_irqsave(&gus->reg_lock, flags);
 384         snd_gf1_select_voice(gus, voice->number);
 385         if (gus->gf1.enh_mode)
 386                 snd_gf1_write8(gus, SNDRV_GF1_VB_MODE, voice->mode);
 387         snd_gf1_write8(gus, SNDRV_GF1_VB_ADDRESS_CONTROL, voice->control);
 388         if (!gus->gf1.enh_mode) {
 389                 snd_gf1_delay(gus);
 390                 snd_gf1_write8(gus, SNDRV_GF1_VB_ADDRESS_CONTROL, voice->control );
 391         }
 392         spin_unlock_irqrestore(&gus->reg_lock, flags);
 393 #if 0
 394         snd_gf1_print_voice_registers(gus);
 395 #endif
 396         voice->flags |= SNDRV_GF1_VFLG_RUNNING;
 397         snd_seq_instr_free_use(gus->gf1.ilist, instr);
 398 }
 399
 400 static void sample_stop(struct snd_gus_card *gus, struct snd_gus_voice *voice, int mode)
 401 {
 402         unsigned char control;
 403         unsigned long flags;
 404
 405         if (!(voice->flags & SNDRV_GF1_VFLG_RUNNING))
 406                 return;
 407         switch (mode) {
 408         default:
 409                 if (gus->gf1.volume_ramp > 0) {
 410                         if (voice->venv_state < VENV_RELEASE) {
 411                                 voice->venv_state = VENV_RELEASE;
 412                                 do_volume_envelope(gus, voice);
 413                         }
 414                 }
 415                 if (mode != SAMPLE_STOP_VENVELOPE) {
 416                         snd_gf1_stop_voice(gus, voice->number);
 417                         spin_lock_irqsave(&gus->reg_lock, flags);
 418                         snd_gf1_select_voice(gus, voice->number);
 419                         snd_gf1_write16(gus, SNDRV_GF1_VW_VOLUME, SNDRV_GF1_MIN_VOLUME);
 420                         spin_unlock_irqrestore(&gus->reg_lock, flags);
 421                         voice->flags &= ~SNDRV_GF1_VFLG_RUNNING;
 422                 }
 423                 break;
 424         case SAMPLE_STOP_LOOP:          /* disable loop only */
 425                 spin_lock_irqsave(&gus->reg_lock, flags);
 426                 snd_gf1_select_voice(gus, voice->number);
 427                 control = snd_gf1_read8(gus, SNDRV_GF1_VB_ADDRESS_CONTROL);
 428                 control &= ~(0x83 | 0x04);
 429                 control |= 0x20;
 430                 snd_gf1_write8(gus, SNDRV_GF1_VB_ADDRESS_CONTROL, control);
 431                 spin_unlock_irqrestore(&gus->reg_lock, flags);
 432                 break;
 433         }
 434 }
 435
 436 static void sample_freq(struct snd_gus_card *gus, struct snd_gus_voice *voice, snd_seq_frequency_t freq)
 437 {
 438         unsigned long flags;
 439
 440         spin_lock_irqsave(&gus->reg_lock, flags);
 441         voice->fc_register = snd_gf1_translate_freq(gus, freq);
 442         snd_gf1_select_voice(gus, voice->number);
 443         snd_gf1_write16(gus, SNDRV_GF1_VW_FREQUENCY, voice->fc_register + voice->fc_lfo);
 444         spin_unlock_irqrestore(&gus->reg_lock, flags);
 445 }
 446
 447 static void sample_volume(struct snd_gus_card *gus, struct snd_gus_voice *voice, struct snd_seq_ev_volume *volume)
 448 {
 449         if (volume->volume >= 0) {
 450                 volume->volume &= 0x3fff;
 451                 voice->gf1_volume = snd_gf1_lvol_to_gvol_raw(volume->volume << 2) << 4;
 452                 voice->venv_state_prev = VENV_SUSTAIN;
 453                 voice->venv_state = VENV_VOLUME;
 454                 do_volume_envelope(gus, voice);
 455         }
 456         if (volume->lr >= 0) {
 457                 volume->lr &= 0x3fff;
 458                 if (!gus->gf1.enh_mode) {
 459                         voice->gf1_pan = (volume->lr >> 10) & 15;
 460                         if (!gus->gf1.full_range_pan) {
 461                                 if (voice->gf1_pan == 0)
 462                                         voice->gf1_pan++;
 463                                 if (voice->gf1_pan == 15)
 464                                         voice->gf1_pan--;
 465                         }
 466                         voice->flags &= ~SNDRV_GF1_VFLG_PAN;    /* before */
 467                         do_pan_envelope(gus, voice);
 468                 } else {
 469                         set_enhanced_pan(gus, voice, volume->lr >> 7);
 470                 }
 471         }
 472 }
 473
 474 static void sample_loop(struct snd_gus_card *gus, struct snd_gus_voice *voice, struct snd_seq_ev_loop *loop)
 475 {
 476         unsigned long flags;
 477         int w_16 = voice->control & 0x04;
 478         unsigned int begin, addr_start, addr_end;
 479         struct simple_instrument *simple;
 480         struct snd_seq_kinstr *instr;
 481
 482 #if 0
 483         printk("voice_loop: start = 0x%x, end = 0x%x\n", loop->start, loop->end);
 484 #endif
 485         instr = snd_seq_instr_find(gus->gf1.ilist, &voice->instr, 0, 1);
 486         if (instr == NULL)
 487                 return;
 488         voice->instr = instr->instr;    /* copy ID to speedup aliases */
 489         simple = KINSTR_DATA(instr);
 490         begin = simple->address.memory;
 491         addr_start = loop->start;
 492         addr_end = loop->end;
 493         addr_start = (((addr_start << 1) & ~0x1f) | (addr_start & 0x0f)) + begin;
 494         addr_end = (((addr_end << 1) & ~0x1f) | (addr_end & 0x0f)) + begin;
 495         spin_lock_irqsave(&gus->reg_lock, flags);
 496         snd_gf1_select_voice(gus, voice->number);
 497         snd_gf1_write_addr(gus, SNDRV_GF1_VA_START, addr_start, w_16);
 498         snd_gf1_write_addr(gus, SNDRV_GF1_VA_END, addr_end, w_16);
 499         spin_unlock_irqrestore(&gus->reg_lock, flags);
 500         snd_seq_instr_free_use(gus->gf1.ilist, instr);
 501 }
 502
 503 static void sample_pos(struct snd_gus_card *gus, struct snd_gus_voice *voice, snd_seq_position_t position)
 504 {
 505         unsigned long flags;
 506         int w_16 = voice->control & 0x04;
 507         unsigned int begin, addr;
 508         struct simple_instrument *simple;
 509         struct snd_seq_kinstr *instr;
 510
 511 #if 0
 512         printk("voice_loop: start = 0x%x, end = 0x%x\n", loop->start, loop->end);
 513 #endif
 514         instr = snd_seq_instr_find(gus->gf1.ilist, &voice->instr, 0, 1);
 515         if (instr == NULL)
 516                 return;
 517         voice->instr = instr->instr;    /* copy ID to speedup aliases */
 518         simple = KINSTR_DATA(instr);
 519         begin = simple->address.memory;
 520         addr = (((position << 1) & ~0x1f) | (position & 0x0f)) + begin;
 521         spin_lock_irqsave(&gus->reg_lock, flags);
 522         snd_gf1_select_voice(gus, voice->number);
 523         snd_gf1_write_addr(gus, SNDRV_GF1_VA_CURRENT, addr, w_16);
 524         spin_unlock_irqrestore(&gus->reg_lock, flags);
 525         snd_seq_instr_free_use(gus->gf1.ilist, instr);
 526 }
 527
 528 #if 0
 529
 530 static unsigned char get_effects_mask( ultra_card_t *card, int value )
 531 {
 532   if ( value > 7 ) return 0;
 533   if ( card -> gf1.effects && card -> gf1.effects -> chip_type == ULTRA_EFFECT_CHIP_INTERWAVE )
 534     return card -> gf1.effects -> chip.interwave.voice_output[ value ];
 535   return 0;
 536 }
 537
 538 #endif
 539
 540 static void sample_private1(struct snd_gus_card *card, struct snd_gus_voice *voice, unsigned char *data)
 541 {
 542 #if 0
 543   unsigned long flags;
 544   unsigned char uc;
 545
 546   switch ( *data ) {
 547     case ULTRA_PRIV1_IW_EFFECT:
 548       uc = get_effects_mask( card, ultra_get_byte( data, 4 ) );
 549       uc |= get_effects_mask( card, ultra_get_byte( data, 4 ) >> 4 );
 550       uc |= get_effects_mask( card, ultra_get_byte( data, 5 ) );
 551       uc |= get_effects_mask( card, ultra_get_byte( data, 5 ) >> 4 );
 552       voice -> data.simple.effect_accumulator = uc;
 553       voice -> data.simple.effect_volume = ultra_translate_voice_volume( card, ultra_get_word( data, 2 ) ) << 4;
 554       if ( !card -> gf1.enh_mode ) return;
 555       if ( voice -> flags & VFLG_WAIT_FOR_START ) return;
 556       if ( voice -> flags & VFLG_RUNNING )
 557         {
 558           CLI( &flags );
 559           gf1_select_voice( card, voice -> number );
 560           ultra_write8( card, GF1_VB_ACCUMULATOR, voice -> data.simple.effect_accumulator );
 561           ultra_write16( card, GF1_VW_EFFECT_VOLUME_FINAL, voice -> data.simple.effect_volume );
 562           STI( &flags );
 563         }
 564       break;
 565    case ULTRA_PRIV1_IW_LFO:
 566      ultra_lfo_command( card, voice -> number, data );
 567   }
 568 #endif
 569 }
 570
 571 #if 0
 572
 573 /*
 574  *
 575  */
 576
 577 static void note_stop( ultra_card_t *card, ultra_voice_t *voice, int wait )
 578 {
 579 }
 580
 581 static void note_wait( ultra_card_t *card, ultra_voice_t *voice )
 582 {
 583 }
 584
 585 static void note_off( ultra_card_t *card, ultra_voice_t *voice )
 586 {
 587 }
 588
 589 static void note_volume( ultra_card_t *card, ultra_voice_t *voice )
 590 {
 591 }
 592
 593 static void note_pitchbend( ultra_card_t *card, ultra_voice_t *voice )
 594 {
 595 }
 596
 597 static void note_vibrato( ultra_card_t *card, ultra_voice_t *voice )
 598 {
 599 }
 600
 601 static void note_tremolo( ultra_card_t *card, ultra_voice_t *voice )
 602 {
 603 }
 604
 605 /*
 606  *
 607  */
 608
 609 static void chn_trigger_down( ultra_card_t *card, ultra_channel_t *channel, ultra_instrument_t *instrument, unsigned char note, unsigned char velocity, unsigned char priority )
 610 {
 611 }
 612
 613 static void chn_trigger_up( ultra_card_t *card, ultra_note_t *note )
 614 {
 615 }
 616
 617 static void chn_control( ultra_card_t *card, ultra_channel_t *channel, unsigned short p1, unsigned short p2 )
 618 {
 619 }
 620
 621 /*
 622  *
 623  */
 624
 625 #endif
 626
 627 void snd_gf1_simple_init(struct snd_gus_voice *voice)
 628 {
 629         voice->handler_wave = interrupt_wave;
 630         voice->handler_volume = interrupt_volume;
 631         voice->handler_effect = interrupt_effect;
 632         voice->volume_change = NULL;
 633         voice->sample_ops = &sample_ops;
 634 }