1 /* 2 * Soundfont generic routines. 3 * It is intended that these should be used by any driver that is willing 4 * to accept soundfont patches. 5 * 6 * Copyright (C) 1999 Steve Ratcliffe 7 * Copyright (c) 1999-2000 Takashi Iwai <tiwai@suse.de> 8 * 9 * This program is free software; you can redistribute it and/or modify 10 * it under the terms of the GNU General Public License as published by 11 * the Free Software Foundation; either version 2 of the License, or 12 * (at your option) any later version. 13 * 14 * This program is distributed in the hope that it will be useful, 15 * but WITHOUT ANY WARRANTY; without even the implied warranty of 16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 17 * GNU General Public License for more details. 18 * 19 * You should have received a copy of the GNU General Public License 20 * along with this program; if not, write to the Free Software 21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 22 */ 23 /* 24 * Deal with reading in of a soundfont. Code follows the OSS way 25 * of doing things so that the old sfxload utility can be used. 26 * Everything may change when there is an alsa way of doing things. 27 */ 28 #include <asm/uaccess.h> 29 #include <linux/slab.h> 30 #include <linux/export.h> 31 #include <sound/core.h> 32 #include <sound/soundfont.h> 33 #include <sound/seq_oss_legacy.h> 34 35 /* Prototypes for static functions */ 36 37 static int open_patch(struct snd_sf_list *sflist, const char __user *data, 38 int count, int client); 39 static struct snd_soundfont *newsf(struct snd_sf_list *sflist, int type, char *name); 40 static int is_identical_font(struct snd_soundfont *sf, int type, unsigned char *name); 41 static int close_patch(struct snd_sf_list *sflist); 42 static int probe_data(struct snd_sf_list *sflist, int sample_id); 43 static void set_zone_counter(struct snd_sf_list *sflist, 44 struct snd_soundfont *sf, struct snd_sf_zone *zp); 45 static struct snd_sf_zone *sf_zone_new(struct snd_sf_list *sflist, 46 struct snd_soundfont *sf); 47 static void set_sample_counter(struct snd_sf_list *sflist, 48 struct snd_soundfont *sf, struct snd_sf_sample *sp); 49 static struct snd_sf_sample *sf_sample_new(struct snd_sf_list *sflist, 50 struct snd_soundfont *sf); 51 static void sf_sample_delete(struct snd_sf_list *sflist, 52 struct snd_soundfont *sf, struct snd_sf_sample *sp); 53 static int load_map(struct snd_sf_list *sflist, const void __user *data, int count); 54 static int load_info(struct snd_sf_list *sflist, const void __user *data, long count); 55 static int remove_info(struct snd_sf_list *sflist, struct snd_soundfont *sf, 56 int bank, int instr); 57 static void init_voice_info(struct soundfont_voice_info *avp); 58 static void init_voice_parm(struct soundfont_voice_parm *pp); 59 static struct snd_sf_sample *set_sample(struct snd_soundfont *sf, 60 struct soundfont_voice_info *avp); 61 static struct snd_sf_sample *find_sample(struct snd_soundfont *sf, int sample_id); 62 static int load_data(struct snd_sf_list *sflist, const void __user *data, long count); 63 static void rebuild_presets(struct snd_sf_list *sflist); 64 static void add_preset(struct snd_sf_list *sflist, struct snd_sf_zone *cur); 65 static void delete_preset(struct snd_sf_list *sflist, struct snd_sf_zone *zp); 66 static struct snd_sf_zone *search_first_zone(struct snd_sf_list *sflist, 67 int bank, int preset, int key); 68 static int search_zones(struct snd_sf_list *sflist, int *notep, int vel, 69 int preset, int bank, struct snd_sf_zone **table, 70 int max_layers, int level); 71 static int get_index(int bank, int instr, int key); 72 static void snd_sf_init(struct snd_sf_list *sflist); 73 static void snd_sf_clear(struct snd_sf_list *sflist); 74 75 /* 76 * lock access to sflist 77 */ 78 static void 79 lock_preset(struct snd_sf_list *sflist) 80 { 81 unsigned long flags; 82 mutex_lock(&sflist->presets_mutex); 83 spin_lock_irqsave(&sflist->lock, flags); 84 sflist->presets_locked = 1; 85 spin_unlock_irqrestore(&sflist->lock, flags); 86 } 87 88 89 /* 90 * remove lock 91 */ 92 static void 93 unlock_preset(struct snd_sf_list *sflist) 94 { 95 unsigned long flags; 96 spin_lock_irqsave(&sflist->lock, flags); 97 sflist->presets_locked = 0; 98 spin_unlock_irqrestore(&sflist->lock, flags); 99 mutex_unlock(&sflist->presets_mutex); 100 } 101 102 103 /* 104 * close the patch if the patch was opened by this client. 105 */ 106 int 107 snd_soundfont_close_check(struct snd_sf_list *sflist, int client) 108 { 109 unsigned long flags; 110 spin_lock_irqsave(&sflist->lock, flags); 111 if (sflist->open_client == client) { 112 spin_unlock_irqrestore(&sflist->lock, flags); 113 return close_patch(sflist); 114 } 115 spin_unlock_irqrestore(&sflist->lock, flags); 116 return 0; 117 } 118 119 120 /* 121 * Deal with a soundfont patch. Any driver could use these routines 122 * although it was designed for the AWE64. 123 * 124 * The sample_write and callargs pararameters allow a callback into 125 * the actual driver to write sample data to the board or whatever 126 * it wants to do with it. 127 */ 128 int 129 snd_soundfont_load(struct snd_sf_list *sflist, const void __user *data, 130 long count, int client) 131 { 132 struct soundfont_patch_info patch; 133 unsigned long flags; 134 int rc; 135 136 if (count < (long)sizeof(patch)) { 137 snd_printk(KERN_ERR "patch record too small %ld\n", count); 138 return -EINVAL; 139 } 140 if (copy_from_user(&patch, data, sizeof(patch))) 141 return -EFAULT; 142 143 count -= sizeof(patch); 144 data += sizeof(patch); 145 146 if (patch.key != SNDRV_OSS_SOUNDFONT_PATCH) { 147 snd_printk(KERN_ERR "The wrong kind of patch %x\n", patch.key); 148 return -EINVAL; 149 } 150 if (count < patch.len) { 151 snd_printk(KERN_ERR "Patch too short %ld, need %d\n", 152 count, patch.len); 153 return -EINVAL; 154 } 155 if (patch.len < 0) { 156 snd_printk(KERN_ERR "poor length %d\n", patch.len); 157 return -EINVAL; 158 } 159 160 if (patch.type == SNDRV_SFNT_OPEN_PATCH) { 161 /* grab sflist to open */ 162 lock_preset(sflist); 163 rc = open_patch(sflist, data, count, client); 164 unlock_preset(sflist); 165 return rc; 166 } 167 168 /* check if other client already opened patch */ 169 spin_lock_irqsave(&sflist->lock, flags); 170 if (sflist->open_client != client) { 171 spin_unlock_irqrestore(&sflist->lock, flags); 172 return -EBUSY; 173 } 174 spin_unlock_irqrestore(&sflist->lock, flags); 175 176 lock_preset(sflist); 177 rc = -EINVAL; 178 switch (patch.type) { 179 case SNDRV_SFNT_LOAD_INFO: 180 rc = load_info(sflist, data, count); 181 break; 182 case SNDRV_SFNT_LOAD_DATA: 183 rc = load_data(sflist, data, count); 184 break; 185 case SNDRV_SFNT_CLOSE_PATCH: 186 rc = close_patch(sflist); 187 break; 188 case SNDRV_SFNT_REPLACE_DATA: 189 /*rc = replace_data(&patch, data, count);*/ 190 break; 191 case SNDRV_SFNT_MAP_PRESET: 192 rc = load_map(sflist, data, count); 193 break; 194 case SNDRV_SFNT_PROBE_DATA: 195 rc = probe_data(sflist, patch.optarg); 196 break; 197 case SNDRV_SFNT_REMOVE_INFO: 198 /* patch must be opened */ 199 if (!sflist->currsf) { 200 snd_printk(KERN_ERR "soundfont: remove_info: " 201 "patch not opened\n"); 202 rc = -EINVAL; 203 } else { 204 int bank, instr; 205 bank = ((unsigned short)patch.optarg >> 8) & 0xff; 206 instr = (unsigned short)patch.optarg & 0xff; 207 if (! remove_info(sflist, sflist->currsf, bank, instr)) 208 rc = -EINVAL; 209 else 210 rc = 0; 211 } 212 break; 213 } 214 unlock_preset(sflist); 215 216 return rc; 217 } 218 219 220 /* check if specified type is special font (GUS or preset-alias) */ 221 static inline int 222 is_special_type(int type) 223 { 224 type &= 0x0f; 225 return (type == SNDRV_SFNT_PAT_TYPE_GUS || 226 type == SNDRV_SFNT_PAT_TYPE_MAP); 227 } 228 229 230 /* open patch; create sf list */ 231 static int 232 open_patch(struct snd_sf_list *sflist, const char __user *data, 233 int count, int client) 234 { 235 struct soundfont_open_parm parm; 236 struct snd_soundfont *sf; 237 unsigned long flags; 238 239 spin_lock_irqsave(&sflist->lock, flags); 240 if (sflist->open_client >= 0 || sflist->currsf) { 241 spin_unlock_irqrestore(&sflist->lock, flags); 242 return -EBUSY; 243 } 244 spin_unlock_irqrestore(&sflist->lock, flags); 245 246 if (copy_from_user(&parm, data, sizeof(parm))) 247 return -EFAULT; 248 249 if (is_special_type(parm.type)) { 250 parm.type |= SNDRV_SFNT_PAT_SHARED; 251 sf = newsf(sflist, parm.type, NULL); 252 } else 253 sf = newsf(sflist, parm.type, parm.name); 254 if (sf == NULL) { 255 return -ENOMEM; 256 } 257 258 spin_lock_irqsave(&sflist->lock, flags); 259 sflist->open_client = client; 260 sflist->currsf = sf; 261 spin_unlock_irqrestore(&sflist->lock, flags); 262 263 return 0; 264 } 265 266 /* 267 * Allocate a new soundfont structure. 268 */ 269 static struct snd_soundfont * 270 newsf(struct snd_sf_list *sflist, int type, char *name) 271 { 272 struct snd_soundfont *sf; 273 274 /* check the shared fonts */ 275 if (type & SNDRV_SFNT_PAT_SHARED) { 276 for (sf = sflist->fonts; sf; sf = sf->next) { 277 if (is_identical_font(sf, type, name)) { 278 return sf; 279 } 280 } 281 } 282 283 /* not found -- create a new one */ 284 sf = kzalloc(sizeof(*sf), GFP_KERNEL); 285 if (sf == NULL) 286 return NULL; 287 sf->id = sflist->fonts_size; 288 sflist->fonts_size++; 289 290 /* prepend this record */ 291 sf->next = sflist->fonts; 292 sflist->fonts = sf; 293 294 sf->type = type; 295 sf->zones = NULL; 296 sf->samples = NULL; 297 if (name) 298 memcpy(sf->name, name, SNDRV_SFNT_PATCH_NAME_LEN); 299 300 return sf; 301 } 302 303 /* check if the given name matches to the existing list */ 304 static int 305 is_identical_font(struct snd_soundfont *sf, int type, unsigned char *name) 306 { 307 return ((sf->type & SNDRV_SFNT_PAT_SHARED) && 308 (sf->type & 0x0f) == (type & 0x0f) && 309 (name == NULL || 310 memcmp(sf->name, name, SNDRV_SFNT_PATCH_NAME_LEN) == 0)); 311 } 312 313 /* 314 * Close the current patch. 315 */ 316 static int 317 close_patch(struct snd_sf_list *sflist) 318 { 319 unsigned long flags; 320 321 spin_lock_irqsave(&sflist->lock, flags); 322 sflist->currsf = NULL; 323 sflist->open_client = -1; 324 spin_unlock_irqrestore(&sflist->lock, flags); 325 326 rebuild_presets(sflist); 327 328 return 0; 329 330 } 331 332 /* probe sample in the current list -- nothing to be loaded */ 333 static int 334 probe_data(struct snd_sf_list *sflist, int sample_id) 335 { 336 /* patch must be opened */ 337 if (sflist->currsf) { 338 /* search the specified sample by optarg */ 339 if (find_sample(sflist->currsf, sample_id)) 340 return 0; 341 } 342 return -EINVAL; 343 } 344 345 /* 346 * increment zone counter 347 */ 348 static void 349 set_zone_counter(struct snd_sf_list *sflist, struct snd_soundfont *sf, 350 struct snd_sf_zone *zp) 351 { 352 zp->counter = sflist->zone_counter++; 353 if (sf->type & SNDRV_SFNT_PAT_LOCKED) 354 sflist->zone_locked = sflist->zone_counter; 355 } 356 357 /* 358 * allocate a new zone record 359 */ 360 static struct snd_sf_zone * 361 sf_zone_new(struct snd_sf_list *sflist, struct snd_soundfont *sf) 362 { 363 struct snd_sf_zone *zp; 364 365 if ((zp = kzalloc(sizeof(*zp), GFP_KERNEL)) == NULL) 366 return NULL; 367 zp->next = sf->zones; 368 sf->zones = zp; 369 370 init_voice_info(&zp->v); 371 372 set_zone_counter(sflist, sf, zp); 373 return zp; 374 } 375 376 377 /* 378 * increment sample counter 379 */ 380 static void 381 set_sample_counter(struct snd_sf_list *sflist, struct snd_soundfont *sf, 382 struct snd_sf_sample *sp) 383 { 384 sp->counter = sflist->sample_counter++; 385 if (sf->type & SNDRV_SFNT_PAT_LOCKED) 386 sflist->sample_locked = sflist->sample_counter; 387 } 388 389 /* 390 * allocate a new sample list record 391 */ 392 static struct snd_sf_sample * 393 sf_sample_new(struct snd_sf_list *sflist, struct snd_soundfont *sf) 394 { 395 struct snd_sf_sample *sp; 396 397 if ((sp = kzalloc(sizeof(*sp), GFP_KERNEL)) == NULL) 398 return NULL; 399 400 sp->next = sf->samples; 401 sf->samples = sp; 402 403 set_sample_counter(sflist, sf, sp); 404 return sp; 405 } 406 407 /* 408 * delete sample list -- this is an exceptional job. 409 * only the last allocated sample can be deleted. 410 */ 411 static void 412 sf_sample_delete(struct snd_sf_list *sflist, struct snd_soundfont *sf, 413 struct snd_sf_sample *sp) 414 { 415 /* only last sample is accepted */ 416 if (sp == sf->samples) { 417 sf->samples = sp->next; 418 kfree(sp); 419 } 420 } 421 422 423 /* load voice map */ 424 static int 425 load_map(struct snd_sf_list *sflist, const void __user *data, int count) 426 { 427 struct snd_sf_zone *zp, *prevp; 428 struct snd_soundfont *sf; 429 struct soundfont_voice_map map; 430 431 /* get the link info */ 432 if (count < (int)sizeof(map)) 433 return -EINVAL; 434 if (copy_from_user(&map, data, sizeof(map))) 435 return -EFAULT; 436 437 if (map.map_instr < 0 || map.map_instr >= SF_MAX_INSTRUMENTS) 438 return -EINVAL; 439 440 sf = newsf(sflist, SNDRV_SFNT_PAT_TYPE_MAP|SNDRV_SFNT_PAT_SHARED, NULL); 441 if (sf == NULL) 442 return -ENOMEM; 443 444 prevp = NULL; 445 for (zp = sf->zones; zp; prevp = zp, zp = zp->next) { 446 if (zp->mapped && 447 zp->instr == map.map_instr && 448 zp->bank == map.map_bank && 449 zp->v.low == map.map_key && 450 zp->v.start == map.src_instr && 451 zp->v.end == map.src_bank && 452 zp->v.fixkey == map.src_key) { 453 /* the same mapping is already present */ 454 /* relink this record to the link head */ 455 if (prevp) { 456 prevp->next = zp->next; 457 zp->next = sf->zones; 458 sf->zones = zp; 459 } 460 /* update the counter */ 461 set_zone_counter(sflist, sf, zp); 462 return 0; 463 } 464 } 465 466 /* create a new zone */ 467 if ((zp = sf_zone_new(sflist, sf)) == NULL) 468 return -ENOMEM; 469 470 zp->bank = map.map_bank; 471 zp->instr = map.map_instr; 472 zp->mapped = 1; 473 if (map.map_key >= 0) { 474 zp->v.low = map.map_key; 475 zp->v.high = map.map_key; 476 } 477 zp->v.start = map.src_instr; 478 zp->v.end = map.src_bank; 479 zp->v.fixkey = map.src_key; 480 zp->v.sf_id = sf->id; 481 482 add_preset(sflist, zp); 483 484 return 0; 485 } 486 487 488 /* remove the present instrument layers */ 489 static int 490 remove_info(struct snd_sf_list *sflist, struct snd_soundfont *sf, 491 int bank, int instr) 492 { 493 struct snd_sf_zone *prev, *next, *p; 494 int removed = 0; 495 496 prev = NULL; 497 for (p = sf->zones; p; p = next) { 498 next = p->next; 499 if (! p->mapped && 500 p->bank == bank && p->instr == instr) { 501 /* remove this layer */ 502 if (prev) 503 prev->next = next; 504 else 505 sf->zones = next; 506 removed++; 507 kfree(p); 508 } else 509 prev = p; 510 } 511 if (removed) 512 rebuild_presets(sflist); 513 return removed; 514 } 515 516 517 /* 518 * Read an info record from the user buffer and save it on the current 519 * open soundfont. 520 */ 521 static int 522 load_info(struct snd_sf_list *sflist, const void __user *data, long count) 523 { 524 struct snd_soundfont *sf; 525 struct snd_sf_zone *zone; 526 struct soundfont_voice_rec_hdr hdr; 527 int i; 528 529 /* patch must be opened */ 530 if ((sf = sflist->currsf) == NULL) 531 return -EINVAL; 532 533 if (is_special_type(sf->type)) 534 return -EINVAL; 535 536 if (count < (long)sizeof(hdr)) { 537 printk(KERN_ERR "Soundfont error: invalid patch zone length\n"); 538 return -EINVAL; 539 } 540 if (copy_from_user((char*)&hdr, data, sizeof(hdr))) 541 return -EFAULT; 542 543 data += sizeof(hdr); 544 count -= sizeof(hdr); 545 546 if (hdr.nvoices <= 0 || hdr.nvoices >= 100) { 547 printk(KERN_ERR "Soundfont error: Illegal voice number %d\n", 548 hdr.nvoices); 549 return -EINVAL; 550 } 551 552 if (count < (long)sizeof(struct soundfont_voice_info) * hdr.nvoices) { 553 printk(KERN_ERR "Soundfont Error: " 554 "patch length(%ld) is smaller than nvoices(%d)\n", 555 count, hdr.nvoices); 556 return -EINVAL; 557 } 558 559 switch (hdr.write_mode) { 560 case SNDRV_SFNT_WR_EXCLUSIVE: 561 /* exclusive mode - if the instrument already exists, 562 return error */ 563 for (zone = sf->zones; zone; zone = zone->next) { 564 if (!zone->mapped && 565 zone->bank == hdr.bank && 566 zone->instr == hdr.instr) 567 return -EINVAL; 568 } 569 break; 570 case SNDRV_SFNT_WR_REPLACE: 571 /* replace mode - remove the instrument if it already exists */ 572 remove_info(sflist, sf, hdr.bank, hdr.instr); 573 break; 574 } 575 576 for (i = 0; i < hdr.nvoices; i++) { 577 struct snd_sf_zone tmpzone; 578 579 /* copy awe_voice_info parameters */ 580 if (copy_from_user(&tmpzone.v, data, sizeof(tmpzone.v))) { 581 return -EFAULT; 582 } 583 584 data += sizeof(tmpzone.v); 585 count -= sizeof(tmpzone.v); 586 587 tmpzone.bank = hdr.bank; 588 tmpzone.instr = hdr.instr; 589 tmpzone.mapped = 0; 590 tmpzone.v.sf_id = sf->id; 591 if (tmpzone.v.mode & SNDRV_SFNT_MODE_INIT_PARM) 592 init_voice_parm(&tmpzone.v.parm); 593 594 /* create a new zone */ 595 if ((zone = sf_zone_new(sflist, sf)) == NULL) { 596 return -ENOMEM; 597 } 598 599 /* copy the temporary data */ 600 zone->bank = tmpzone.bank; 601 zone->instr = tmpzone.instr; 602 zone->v = tmpzone.v; 603 604 /* look up the sample */ 605 zone->sample = set_sample(sf, &zone->v); 606 } 607 608 return 0; 609 } 610 611 612 /* initialize voice_info record */ 613 static void 614 init_voice_info(struct soundfont_voice_info *avp) 615 { 616 memset(avp, 0, sizeof(*avp)); 617 618 avp->root = 60; 619 avp->high = 127; 620 avp->velhigh = 127; 621 avp->fixkey = -1; 622 avp->fixvel = -1; 623 avp->fixpan = -1; 624 avp->pan = -1; 625 avp->amplitude = 127; 626 avp->scaleTuning = 100; 627 628 init_voice_parm(&avp->parm); 629 } 630 631 /* initialize voice_parm record: 632 * Env1/2: delay=0, attack=0, hold=0, sustain=0, decay=0, release=0. 633 * Vibrato and Tremolo effects are zero. 634 * Cutoff is maximum. 635 * Chorus and Reverb effects are zero. 636 */ 637 static void 638 init_voice_parm(struct soundfont_voice_parm *pp) 639 { 640 memset(pp, 0, sizeof(*pp)); 641 642 pp->moddelay = 0x8000; 643 pp->modatkhld = 0x7f7f; 644 pp->moddcysus = 0x7f7f; 645 pp->modrelease = 0x807f; 646 647 pp->voldelay = 0x8000; 648 pp->volatkhld = 0x7f7f; 649 pp->voldcysus = 0x7f7f; 650 pp->volrelease = 0x807f; 651 652 pp->lfo1delay = 0x8000; 653 pp->lfo2delay = 0x8000; 654 655 pp->cutoff = 0xff; 656 } 657 658 /* search the specified sample */ 659 static struct snd_sf_sample * 660 set_sample(struct snd_soundfont *sf, struct soundfont_voice_info *avp) 661 { 662 struct snd_sf_sample *sample; 663 664 sample = find_sample(sf, avp->sample); 665 if (sample == NULL) 666 return NULL; 667 668 /* add in the actual sample offsets: 669 * The voice_info addresses define only the relative offset 670 * from sample pointers. Here we calculate the actual DRAM 671 * offset from sample pointers. 672 */ 673 avp->start += sample->v.start; 674 avp->end += sample->v.end; 675 avp->loopstart += sample->v.loopstart; 676 avp->loopend += sample->v.loopend; 677 678 /* copy mode flags */ 679 avp->sample_mode = sample->v.mode_flags; 680 681 return sample; 682 } 683 684 /* find the sample pointer with the given id in the soundfont */ 685 static struct snd_sf_sample * 686 find_sample(struct snd_soundfont *sf, int sample_id) 687 { 688 struct snd_sf_sample *p; 689 690 if (sf == NULL) 691 return NULL; 692 693 for (p = sf->samples; p; p = p->next) { 694 if (p->v.sample == sample_id) 695 return p; 696 } 697 return NULL; 698 } 699 700 701 /* 702 * Load sample information, this can include data to be loaded onto 703 * the soundcard. It can also just be a pointer into soundcard ROM. 704 * If there is data it will be written to the soundcard via the callback 705 * routine. 706 */ 707 static int 708 load_data(struct snd_sf_list *sflist, const void __user *data, long count) 709 { 710 struct snd_soundfont *sf; 711 struct soundfont_sample_info sample_info; 712 struct snd_sf_sample *sp; 713 long off; 714 715 /* patch must be opened */ 716 if ((sf = sflist->currsf) == NULL) 717 return -EINVAL; 718 719 if (is_special_type(sf->type)) 720 return -EINVAL; 721 722 if (copy_from_user(&sample_info, data, sizeof(sample_info))) 723 return -EFAULT; 724 725 off = sizeof(sample_info); 726 727 if (sample_info.size != (count-off)/2) 728 return -EINVAL; 729 730 /* Check for dup */ 731 if (find_sample(sf, sample_info.sample)) { 732 /* if shared sample, skip this data */ 733 if (sf->type & SNDRV_SFNT_PAT_SHARED) 734 return 0; 735 return -EINVAL; 736 } 737 738 /* Allocate a new sample structure */ 739 if ((sp = sf_sample_new(sflist, sf)) == NULL) 740 return -ENOMEM; 741 742 sp->v = sample_info; 743 sp->v.sf_id = sf->id; 744 sp->v.dummy = 0; 745 sp->v.truesize = sp->v.size; 746 747 /* 748 * If there is wave data then load it. 749 */ 750 if (sp->v.size > 0) { 751 int rc; 752 rc = sflist->callback.sample_new 753 (sflist->callback.private_data, sp, sflist->memhdr, 754 data + off, count - off); 755 if (rc < 0) { 756 sf_sample_delete(sflist, sf, sp); 757 return rc; 758 } 759 sflist->mem_used += sp->v.truesize; 760 } 761 762 return count; 763 } 764 765 766 /* log2_tbl[i] = log2(i+128) * 0x10000 */ 767 static int log_tbl[129] = { 768 0x70000, 0x702df, 0x705b9, 0x7088e, 0x70b5d, 0x70e26, 0x710eb, 0x713aa, 769 0x71663, 0x71918, 0x71bc8, 0x71e72, 0x72118, 0x723b9, 0x72655, 0x728ed, 770 0x72b80, 0x72e0e, 0x73098, 0x7331d, 0x7359e, 0x7381b, 0x73a93, 0x73d08, 771 0x73f78, 0x741e4, 0x7444c, 0x746b0, 0x74910, 0x74b6c, 0x74dc4, 0x75019, 772 0x75269, 0x754b6, 0x75700, 0x75946, 0x75b88, 0x75dc7, 0x76002, 0x7623a, 773 0x7646e, 0x766a0, 0x768cd, 0x76af8, 0x76d1f, 0x76f43, 0x77164, 0x77382, 774 0x7759d, 0x777b4, 0x779c9, 0x77bdb, 0x77dea, 0x77ff5, 0x781fe, 0x78404, 775 0x78608, 0x78808, 0x78a06, 0x78c01, 0x78df9, 0x78fef, 0x791e2, 0x793d2, 776 0x795c0, 0x797ab, 0x79993, 0x79b79, 0x79d5d, 0x79f3e, 0x7a11d, 0x7a2f9, 777 0x7a4d3, 0x7a6ab, 0x7a880, 0x7aa53, 0x7ac24, 0x7adf2, 0x7afbe, 0x7b188, 778 0x7b350, 0x7b515, 0x7b6d8, 0x7b899, 0x7ba58, 0x7bc15, 0x7bdd0, 0x7bf89, 779 0x7c140, 0x7c2f5, 0x7c4a7, 0x7c658, 0x7c807, 0x7c9b3, 0x7cb5e, 0x7cd07, 780 0x7ceae, 0x7d053, 0x7d1f7, 0x7d398, 0x7d538, 0x7d6d6, 0x7d872, 0x7da0c, 781 0x7dba4, 0x7dd3b, 0x7ded0, 0x7e063, 0x7e1f4, 0x7e384, 0x7e512, 0x7e69f, 782 0x7e829, 0x7e9b3, 0x7eb3a, 0x7ecc0, 0x7ee44, 0x7efc7, 0x7f148, 0x7f2c8, 783 0x7f446, 0x7f5c2, 0x7f73d, 0x7f8b7, 0x7fa2f, 0x7fba5, 0x7fd1a, 0x7fe8d, 784 0x80000, 785 }; 786 787 /* convert from linear to log value 788 * 789 * conversion: value = log2(amount / base) * ratio 790 * 791 * argument: 792 * amount = linear value (unsigned, 32bit max) 793 * offset = base offset (:= log2(base) * 0x10000) 794 * ratio = division ratio 795 * 796 */ 797 int 798 snd_sf_linear_to_log(unsigned int amount, int offset, int ratio) 799 { 800 int v; 801 int s, low, bit; 802 803 if (amount < 2) 804 return 0; 805 for (bit = 0; ! (amount & 0x80000000L); bit++) 806 amount <<= 1; 807 s = (amount >> 24) & 0x7f; 808 low = (amount >> 16) & 0xff; 809 /* linear approxmimation by lower 8 bit */ 810 v = (log_tbl[s + 1] * low + log_tbl[s] * (0x100 - low)) >> 8; 811 v -= offset; 812 v = (v * ratio) >> 16; 813 v += (24 - bit) * ratio; 814 return v; 815 } 816 817 EXPORT_SYMBOL(snd_sf_linear_to_log); 818 819 820 #define OFFSET_MSEC 653117 /* base = 1000 */ 821 #define OFFSET_ABSCENT 851781 /* base = 8176 */ 822 #define OFFSET_SAMPLERATE 1011119 /* base = 44100 */ 823 824 #define ABSCENT_RATIO 1200 825 #define TIMECENT_RATIO 1200 826 #define SAMPLERATE_RATIO 4096 827 828 /* 829 * mHz to abscent 830 * conversion: abscent = log2(MHz / 8176) * 1200 831 */ 832 static int 833 freq_to_note(int mhz) 834 { 835 return snd_sf_linear_to_log(mhz, OFFSET_ABSCENT, ABSCENT_RATIO); 836 } 837 838 /* convert Hz to AWE32 rate offset: 839 * sample pitch offset for the specified sample rate 840 * rate=44100 is no offset, each 4096 is 1 octave (twice). 841 * eg, when rate is 22050, this offset becomes -4096. 842 * 843 * conversion: offset = log2(Hz / 44100) * 4096 844 */ 845 static int 846 calc_rate_offset(int hz) 847 { 848 return snd_sf_linear_to_log(hz, OFFSET_SAMPLERATE, SAMPLERATE_RATIO); 849 } 850 851 852 /* calculate GUS envelope time */ 853 static int 854 calc_gus_envelope_time(int rate, int start, int end) 855 { 856 int r, p, t; 857 r = (3 - ((rate >> 6) & 3)) * 3; 858 p = rate & 0x3f; 859 t = end - start; 860 if (t < 0) t = -t; 861 if (13 > r) 862 t = t << (13 - r); 863 else 864 t = t >> (r - 13); 865 return (t * 10) / (p * 441); 866 } 867 868 /* convert envelope time parameter to soundfont parameters */ 869 870 /* attack & decay/release time table (msec) */ 871 static short attack_time_tbl[128] = { 872 32767, 32767, 5989, 4235, 2994, 2518, 2117, 1780, 1497, 1373, 1259, 1154, 1058, 970, 890, 816, 873 707, 691, 662, 634, 607, 581, 557, 533, 510, 489, 468, 448, 429, 411, 393, 377, 874 361, 345, 331, 317, 303, 290, 278, 266, 255, 244, 234, 224, 214, 205, 196, 188, 875 180, 172, 165, 158, 151, 145, 139, 133, 127, 122, 117, 112, 107, 102, 98, 94, 876 90, 86, 82, 79, 75, 72, 69, 66, 63, 61, 58, 56, 53, 51, 49, 47, 877 45, 43, 41, 39, 37, 36, 34, 33, 31, 30, 29, 28, 26, 25, 24, 23, 878 22, 21, 20, 19, 19, 18, 17, 16, 16, 15, 15, 14, 13, 13, 12, 12, 879 11, 11, 10, 10, 10, 9, 9, 8, 8, 8, 8, 7, 7, 7, 6, 0, 880 }; 881 882 static short decay_time_tbl[128] = { 883 32767, 32767, 22614, 15990, 11307, 9508, 7995, 6723, 5653, 5184, 4754, 4359, 3997, 3665, 3361, 3082, 884 2828, 2765, 2648, 2535, 2428, 2325, 2226, 2132, 2042, 1955, 1872, 1793, 1717, 1644, 1574, 1507, 885 1443, 1382, 1324, 1267, 1214, 1162, 1113, 1066, 978, 936, 897, 859, 822, 787, 754, 722, 886 691, 662, 634, 607, 581, 557, 533, 510, 489, 468, 448, 429, 411, 393, 377, 361, 887 345, 331, 317, 303, 290, 278, 266, 255, 244, 234, 224, 214, 205, 196, 188, 180, 888 172, 165, 158, 151, 145, 139, 133, 127, 122, 117, 112, 107, 102, 98, 94, 90, 889 86, 82, 79, 75, 72, 69, 66, 63, 61, 58, 56, 53, 51, 49, 47, 45, 890 43, 41, 39, 37, 36, 34, 33, 31, 30, 29, 28, 26, 25, 24, 23, 22, 891 }; 892 893 /* delay time = 0x8000 - msec/92 */ 894 int 895 snd_sf_calc_parm_hold(int msec) 896 { 897 int val = (0x7f * 92 - msec) / 92; 898 if (val < 1) val = 1; 899 if (val >= 126) val = 126; 900 return val; 901 } 902 903 /* search an index for specified time from given time table */ 904 static int 905 calc_parm_search(int msec, short *table) 906 { 907 int left = 1, right = 127, mid; 908 while (left < right) { 909 mid = (left + right) / 2; 910 if (msec < (int)table[mid]) 911 left = mid + 1; 912 else 913 right = mid; 914 } 915 return left; 916 } 917 918 /* attack time: search from time table */ 919 int 920 snd_sf_calc_parm_attack(int msec) 921 { 922 return calc_parm_search(msec, attack_time_tbl); 923 } 924 925 /* decay/release time: search from time table */ 926 int 927 snd_sf_calc_parm_decay(int msec) 928 { 929 return calc_parm_search(msec, decay_time_tbl); 930 } 931 932 int snd_sf_vol_table[128] = { 933 255,111,95,86,79,74,70,66,63,61,58,56,54,52,50,49, 934 47,46,45,43,42,41,40,39,38,37,36,35,34,34,33,32, 935 31,31,30,29,29,28,27,27,26,26,25,24,24,23,23,22, 936 22,21,21,21,20,20,19,19,18,18,18,17,17,16,16,16, 937 15,15,15,14,14,14,13,13,13,12,12,12,11,11,11,10, 938 10,10,10,9,9,9,8,8,8,8,7,7,7,7,6,6, 939 6,6,5,5,5,5,5,4,4,4,4,3,3,3,3,3, 940 2,2,2,2,2,1,1,1,1,1,0,0,0,0,0,0, 941 }; 942 943 944 #define calc_gus_sustain(val) (0x7f - snd_sf_vol_table[(val)/2]) 945 #define calc_gus_attenuation(val) snd_sf_vol_table[(val)/2] 946 947 /* load GUS patch */ 948 static int 949 load_guspatch(struct snd_sf_list *sflist, const char __user *data, 950 long count, int client) 951 { 952 struct patch_info patch; 953 struct snd_soundfont *sf; 954 struct snd_sf_zone *zone; 955 struct snd_sf_sample *smp; 956 int note, sample_id; 957 int rc; 958 959 if (count < (long)sizeof(patch)) { 960 snd_printk(KERN_ERR "patch record too small %ld\n", count); 961 return -EINVAL; 962 } 963 if (copy_from_user(&patch, data, sizeof(patch))) 964 return -EFAULT; 965 966 count -= sizeof(patch); 967 data += sizeof(patch); 968 969 sf = newsf(sflist, SNDRV_SFNT_PAT_TYPE_GUS|SNDRV_SFNT_PAT_SHARED, NULL); 970 if (sf == NULL) 971 return -ENOMEM; 972 if ((smp = sf_sample_new(sflist, sf)) == NULL) 973 return -ENOMEM; 974 sample_id = sflist->sample_counter; 975 smp->v.sample = sample_id; 976 smp->v.start = 0; 977 smp->v.end = patch.len; 978 smp->v.loopstart = patch.loop_start; 979 smp->v.loopend = patch.loop_end; 980 smp->v.size = patch.len; 981 982 /* set up mode flags */ 983 smp->v.mode_flags = 0; 984 if (!(patch.mode & WAVE_16_BITS)) 985 smp->v.mode_flags |= SNDRV_SFNT_SAMPLE_8BITS; 986 if (patch.mode & WAVE_UNSIGNED) 987 smp->v.mode_flags |= SNDRV_SFNT_SAMPLE_UNSIGNED; 988 smp->v.mode_flags |= SNDRV_SFNT_SAMPLE_NO_BLANK; 989 if (!(patch.mode & (WAVE_LOOPING|WAVE_BIDIR_LOOP|WAVE_LOOP_BACK))) 990 smp->v.mode_flags |= SNDRV_SFNT_SAMPLE_SINGLESHOT; 991 if (patch.mode & WAVE_BIDIR_LOOP) 992 smp->v.mode_flags |= SNDRV_SFNT_SAMPLE_BIDIR_LOOP; 993 if (patch.mode & WAVE_LOOP_BACK) 994 smp->v.mode_flags |= SNDRV_SFNT_SAMPLE_REVERSE_LOOP; 995 996 if (patch.mode & WAVE_16_BITS) { 997 /* convert to word offsets */ 998 smp->v.size /= 2; 999 smp->v.end /= 2; 1000 smp->v.loopstart /= 2; 1001 smp->v.loopend /= 2; 1002 } 1003 /*smp->v.loopend++;*/ 1004 1005 smp->v.dummy = 0; 1006 smp->v.truesize = 0; 1007 smp->v.sf_id = sf->id; 1008 1009 /* set up voice info */ 1010 if ((zone = sf_zone_new(sflist, sf)) == NULL) { 1011 sf_sample_delete(sflist, sf, smp); 1012 return -ENOMEM; 1013 } 1014 1015 /* 1016 * load wave data 1017 */ 1018 if (sflist->callback.sample_new) { 1019 rc = sflist->callback.sample_new 1020 (sflist->callback.private_data, smp, sflist->memhdr, 1021 data, count); 1022 if (rc < 0) { 1023 sf_sample_delete(sflist, sf, smp); 1024 return rc; 1025 } 1026 /* memory offset is updated after */ 1027 } 1028 1029 /* update the memory offset here */ 1030 sflist->mem_used += smp->v.truesize; 1031 1032 zone->v.sample = sample_id; /* the last sample */ 1033 zone->v.rate_offset = calc_rate_offset(patch.base_freq); 1034 note = freq_to_note(patch.base_note); 1035 zone->v.root = note / 100; 1036 zone->v.tune = -(note % 100); 1037 zone->v.low = (freq_to_note(patch.low_note) + 99) / 100; 1038 zone->v.high = freq_to_note(patch.high_note) / 100; 1039 /* panning position; -128 - 127 => 0-127 */ 1040 zone->v.pan = (patch.panning + 128) / 2; 1041 #if 0 1042 snd_printk(KERN_DEBUG 1043 "gus: basefrq=%d (ofs=%d) root=%d,tune=%d, range:%d-%d\n", 1044 (int)patch.base_freq, zone->v.rate_offset, 1045 zone->v.root, zone->v.tune, zone->v.low, zone->v.high); 1046 #endif 1047 1048 /* detuning is ignored */ 1049 /* 6points volume envelope */ 1050 if (patch.mode & WAVE_ENVELOPES) { 1051 int attack, hold, decay, release; 1052 attack = calc_gus_envelope_time 1053 (patch.env_rate[0], 0, patch.env_offset[0]); 1054 hold = calc_gus_envelope_time 1055 (patch.env_rate[1], patch.env_offset[0], 1056 patch.env_offset[1]); 1057 decay = calc_gus_envelope_time 1058 (patch.env_rate[2], patch.env_offset[1], 1059 patch.env_offset[2]); 1060 release = calc_gus_envelope_time 1061 (patch.env_rate[3], patch.env_offset[1], 1062 patch.env_offset[4]); 1063 release += calc_gus_envelope_time 1064 (patch.env_rate[4], patch.env_offset[3], 1065 patch.env_offset[4]); 1066 release += calc_gus_envelope_time 1067 (patch.env_rate[5], patch.env_offset[4], 1068 patch.env_offset[5]); 1069 zone->v.parm.volatkhld = 1070 (snd_sf_calc_parm_hold(hold) << 8) | 1071 snd_sf_calc_parm_attack(attack); 1072 zone->v.parm.voldcysus = (calc_gus_sustain(patch.env_offset[2]) << 8) | 1073 snd_sf_calc_parm_decay(decay); 1074 zone->v.parm.volrelease = 0x8000 | snd_sf_calc_parm_decay(release); 1075 zone->v.attenuation = calc_gus_attenuation(patch.env_offset[0]); 1076 #if 0 1077 snd_printk(KERN_DEBUG 1078 "gus: atkhld=%x, dcysus=%x, volrel=%x, att=%d\n", 1079 zone->v.parm.volatkhld, 1080 zone->v.parm.voldcysus, 1081 zone->v.parm.volrelease, 1082 zone->v.attenuation); 1083 #endif 1084 } 1085 1086 /* fast release */ 1087 if (patch.mode & WAVE_FAST_RELEASE) { 1088 zone->v.parm.volrelease = 0x807f; 1089 } 1090 1091 /* tremolo effect */ 1092 if (patch.mode & WAVE_TREMOLO) { 1093 int rate = (patch.tremolo_rate * 1000 / 38) / 42; 1094 zone->v.parm.tremfrq = ((patch.tremolo_depth / 2) << 8) | rate; 1095 } 1096 /* vibrato effect */ 1097 if (patch.mode & WAVE_VIBRATO) { 1098 int rate = (patch.vibrato_rate * 1000 / 38) / 42; 1099 zone->v.parm.fm2frq2 = ((patch.vibrato_depth / 6) << 8) | rate; 1100 } 1101 1102 /* scale_freq, scale_factor, volume, and fractions not implemented */ 1103 1104 if (!(smp->v.mode_flags & SNDRV_SFNT_SAMPLE_SINGLESHOT)) 1105 zone->v.mode = SNDRV_SFNT_MODE_LOOPING; 1106 else 1107 zone->v.mode = 0; 1108 1109 /* append to the tail of the list */ 1110 /*zone->bank = ctrls[AWE_MD_GUS_BANK];*/ 1111 zone->bank = 0; 1112 zone->instr = patch.instr_no; 1113 zone->mapped = 0; 1114 zone->v.sf_id = sf->id; 1115 1116 zone->sample = set_sample(sf, &zone->v); 1117 1118 /* rebuild preset now */ 1119 add_preset(sflist, zone); 1120 1121 return 0; 1122 } 1123 1124 /* load GUS patch */ 1125 int 1126 snd_soundfont_load_guspatch(struct snd_sf_list *sflist, const char __user *data, 1127 long count, int client) 1128 { 1129 int rc; 1130 lock_preset(sflist); 1131 rc = load_guspatch(sflist, data, count, client); 1132 unlock_preset(sflist); 1133 return rc; 1134 } 1135 1136 1137 /* 1138 * Rebuild the preset table. This is like a hash table in that it allows 1139 * quick access to the zone information. For each preset there are zone 1140 * structures linked by next_instr and by next_zone. Former is the whole 1141 * link for this preset, and latter is the link for zone (i.e. instrument/ 1142 * bank/key combination). 1143 */ 1144 static void 1145 rebuild_presets(struct snd_sf_list *sflist) 1146 { 1147 struct snd_soundfont *sf; 1148 struct snd_sf_zone *cur; 1149 1150 /* clear preset table */ 1151 memset(sflist->presets, 0, sizeof(sflist->presets)); 1152 1153 /* search all fonts and insert each font */ 1154 for (sf = sflist->fonts; sf; sf = sf->next) { 1155 for (cur = sf->zones; cur; cur = cur->next) { 1156 if (! cur->mapped && cur->sample == NULL) { 1157 /* try again to search the corresponding sample */ 1158 cur->sample = set_sample(sf, &cur->v); 1159 if (cur->sample == NULL) 1160 continue; 1161 } 1162 1163 add_preset(sflist, cur); 1164 } 1165 } 1166 } 1167 1168 1169 /* 1170 * add the given zone to preset table 1171 */ 1172 static void 1173 add_preset(struct snd_sf_list *sflist, struct snd_sf_zone *cur) 1174 { 1175 struct snd_sf_zone *zone; 1176 int index; 1177 1178 zone = search_first_zone(sflist, cur->bank, cur->instr, cur->v.low); 1179 if (zone && zone->v.sf_id != cur->v.sf_id) { 1180 /* different instrument was already defined */ 1181 struct snd_sf_zone *p; 1182 /* compare the allocated time */ 1183 for (p = zone; p; p = p->next_zone) { 1184 if (p->counter > cur->counter) 1185 /* the current is older.. skipped */ 1186 return; 1187 } 1188 /* remove old zones */ 1189 delete_preset(sflist, zone); 1190 zone = NULL; /* do not forget to clear this! */ 1191 } 1192 1193 /* prepend this zone */ 1194 if ((index = get_index(cur->bank, cur->instr, cur->v.low)) < 0) 1195 return; 1196 cur->next_zone = zone; /* zone link */ 1197 cur->next_instr = sflist->presets[index]; /* preset table link */ 1198 sflist->presets[index] = cur; 1199 } 1200 1201 /* 1202 * delete the given zones from preset_table 1203 */ 1204 static void 1205 delete_preset(struct snd_sf_list *sflist, struct snd_sf_zone *zp) 1206 { 1207 int index; 1208 struct snd_sf_zone *p; 1209 1210 if ((index = get_index(zp->bank, zp->instr, zp->v.low)) < 0) 1211 return; 1212 for (p = sflist->presets[index]; p; p = p->next_instr) { 1213 while (p->next_instr == zp) { 1214 p->next_instr = zp->next_instr; 1215 zp = zp->next_zone; 1216 if (zp == NULL) 1217 return; 1218 } 1219 } 1220 } 1221 1222 1223 /* 1224 * Search matching zones from preset table. 1225 * The note can be rewritten by preset mapping (alias). 1226 * The found zones are stored on 'table' array. max_layers defines 1227 * the maximum number of elements in this array. 1228 * This function returns the number of found zones. 0 if not found. 1229 */ 1230 int 1231 snd_soundfont_search_zone(struct snd_sf_list *sflist, int *notep, int vel, 1232 int preset, int bank, 1233 int def_preset, int def_bank, 1234 struct snd_sf_zone **table, int max_layers) 1235 { 1236 int nvoices; 1237 unsigned long flags; 1238 1239 /* this function is supposed to be called atomically, 1240 * so we check the lock. if it's busy, just returns 0 to 1241 * tell the caller the busy state 1242 */ 1243 spin_lock_irqsave(&sflist->lock, flags); 1244 if (sflist->presets_locked) { 1245 spin_unlock_irqrestore(&sflist->lock, flags); 1246 return 0; 1247 } 1248 nvoices = search_zones(sflist, notep, vel, preset, bank, 1249 table, max_layers, 0); 1250 if (! nvoices) { 1251 if (preset != def_preset || bank != def_bank) 1252 nvoices = search_zones(sflist, notep, vel, 1253 def_preset, def_bank, 1254 table, max_layers, 0); 1255 } 1256 spin_unlock_irqrestore(&sflist->lock, flags); 1257 return nvoices; 1258 } 1259 1260 1261 /* 1262 * search the first matching zone 1263 */ 1264 static struct snd_sf_zone * 1265 search_first_zone(struct snd_sf_list *sflist, int bank, int preset, int key) 1266 { 1267 int index; 1268 struct snd_sf_zone *zp; 1269 1270 if ((index = get_index(bank, preset, key)) < 0) 1271 return NULL; 1272 for (zp = sflist->presets[index]; zp; zp = zp->next_instr) { 1273 if (zp->instr == preset && zp->bank == bank) 1274 return zp; 1275 } 1276 return NULL; 1277 } 1278 1279 1280 /* 1281 * search matching zones from sflist. can be called recursively. 1282 */ 1283 static int 1284 search_zones(struct snd_sf_list *sflist, int *notep, int vel, 1285 int preset, int bank, struct snd_sf_zone **table, 1286 int max_layers, int level) 1287 { 1288 struct snd_sf_zone *zp; 1289 int nvoices; 1290 1291 zp = search_first_zone(sflist, bank, preset, *notep); 1292 nvoices = 0; 1293 for (; zp; zp = zp->next_zone) { 1294 if (*notep >= zp->v.low && *notep <= zp->v.high && 1295 vel >= zp->v.vellow && vel <= zp->v.velhigh) { 1296 if (zp->mapped) { 1297 /* search preset mapping (aliasing) */ 1298 int key = zp->v.fixkey; 1299 preset = zp->v.start; 1300 bank = zp->v.end; 1301 1302 if (level > 5) /* too deep alias level */ 1303 return 0; 1304 if (key < 0) 1305 key = *notep; 1306 nvoices = search_zones(sflist, &key, vel, 1307 preset, bank, table, 1308 max_layers, level + 1); 1309 if (nvoices > 0) 1310 *notep = key; 1311 break; 1312 } 1313 table[nvoices++] = zp; 1314 if (nvoices >= max_layers) 1315 break; 1316 } 1317 } 1318 1319 return nvoices; 1320 } 1321 1322 1323 /* calculate the index of preset table: 1324 * drums are mapped from 128 to 255 according to its note key. 1325 * other instruments are mapped from 0 to 127. 1326 * if the index is out of range, return -1. 1327 */ 1328 static int 1329 get_index(int bank, int instr, int key) 1330 { 1331 int index; 1332 if (SF_IS_DRUM_BANK(bank)) 1333 index = key + SF_MAX_INSTRUMENTS; 1334 else 1335 index = instr; 1336 index = index % SF_MAX_PRESETS; 1337 if (index < 0) 1338 return -1; 1339 return index; 1340 } 1341 1342 /* 1343 * Initialise the sflist structure. 1344 */ 1345 static void 1346 snd_sf_init(struct snd_sf_list *sflist) 1347 { 1348 memset(sflist->presets, 0, sizeof(sflist->presets)); 1349 1350 sflist->mem_used = 0; 1351 sflist->currsf = NULL; 1352 sflist->open_client = -1; 1353 sflist->fonts = NULL; 1354 sflist->fonts_size = 0; 1355 sflist->zone_counter = 0; 1356 sflist->sample_counter = 0; 1357 sflist->zone_locked = 0; 1358 sflist->sample_locked = 0; 1359 } 1360 1361 /* 1362 * Release all list records 1363 */ 1364 static void 1365 snd_sf_clear(struct snd_sf_list *sflist) 1366 { 1367 struct snd_soundfont *sf, *nextsf; 1368 struct snd_sf_zone *zp, *nextzp; 1369 struct snd_sf_sample *sp, *nextsp; 1370 1371 for (sf = sflist->fonts; sf; sf = nextsf) { 1372 nextsf = sf->next; 1373 for (zp = sf->zones; zp; zp = nextzp) { 1374 nextzp = zp->next; 1375 kfree(zp); 1376 } 1377 for (sp = sf->samples; sp; sp = nextsp) { 1378 nextsp = sp->next; 1379 if (sflist->callback.sample_free) 1380 sflist->callback.sample_free(sflist->callback.private_data, 1381 sp, sflist->memhdr); 1382 kfree(sp); 1383 } 1384 kfree(sf); 1385 } 1386 1387 snd_sf_init(sflist); 1388 } 1389 1390 1391 /* 1392 * Create a new sflist structure 1393 */ 1394 struct snd_sf_list * 1395 snd_sf_new(struct snd_sf_callback *callback, struct snd_util_memhdr *hdr) 1396 { 1397 struct snd_sf_list *sflist; 1398 1399 if ((sflist = kzalloc(sizeof(*sflist), GFP_KERNEL)) == NULL) 1400 return NULL; 1401 1402 mutex_init(&sflist->presets_mutex); 1403 spin_lock_init(&sflist->lock); 1404 sflist->memhdr = hdr; 1405 1406 if (callback) 1407 sflist->callback = *callback; 1408 1409 snd_sf_init(sflist); 1410 return sflist; 1411 } 1412 1413 1414 /* 1415 * Free everything allocated off the sflist structure. 1416 */ 1417 void 1418 snd_sf_free(struct snd_sf_list *sflist) 1419 { 1420 if (sflist == NULL) 1421 return; 1422 1423 lock_preset(sflist); 1424 if (sflist->callback.sample_reset) 1425 sflist->callback.sample_reset(sflist->callback.private_data); 1426 snd_sf_clear(sflist); 1427 unlock_preset(sflist); 1428 1429 kfree(sflist); 1430 } 1431 1432 /* 1433 * Remove all samples 1434 * The soundcard should be silet before calling this function. 1435 */ 1436 int 1437 snd_soundfont_remove_samples(struct snd_sf_list *sflist) 1438 { 1439 lock_preset(sflist); 1440 if (sflist->callback.sample_reset) 1441 sflist->callback.sample_reset(sflist->callback.private_data); 1442 snd_sf_clear(sflist); 1443 unlock_preset(sflist); 1444 1445 return 0; 1446 } 1447 1448 /* 1449 * Remove unlocked samples. 1450 * The soundcard should be silent before calling this function. 1451 */ 1452 int 1453 snd_soundfont_remove_unlocked(struct snd_sf_list *sflist) 1454 { 1455 struct snd_soundfont *sf; 1456 struct snd_sf_zone *zp, *nextzp; 1457 struct snd_sf_sample *sp, *nextsp; 1458 1459 lock_preset(sflist); 1460 1461 if (sflist->callback.sample_reset) 1462 sflist->callback.sample_reset(sflist->callback.private_data); 1463 1464 /* to be sure */ 1465 memset(sflist->presets, 0, sizeof(sflist->presets)); 1466 1467 for (sf = sflist->fonts; sf; sf = sf->next) { 1468 for (zp = sf->zones; zp; zp = nextzp) { 1469 if (zp->counter < sflist->zone_locked) 1470 break; 1471 nextzp = zp->next; 1472 sf->zones = nextzp; 1473 kfree(zp); 1474 } 1475 1476 for (sp = sf->samples; sp; sp = nextsp) { 1477 if (sp->counter < sflist->sample_locked) 1478 break; 1479 nextsp = sp->next; 1480 sf->samples = nextsp; 1481 sflist->mem_used -= sp->v.truesize; 1482 if (sflist->callback.sample_free) 1483 sflist->callback.sample_free(sflist->callback.private_data, 1484 sp, sflist->memhdr); 1485 kfree(sp); 1486 } 1487 } 1488 1489 sflist->zone_counter = sflist->zone_locked; 1490 sflist->sample_counter = sflist->sample_locked; 1491 1492 rebuild_presets(sflist); 1493 1494 unlock_preset(sflist); 1495 return 0; 1496 } 1497