ia64/linux-2.6.18-xen.hg

view sound/synth/emux/soundfont.c @ 782:9ab1c319531f

merge with linux-2.6.18-xen.hg
author Isaku Yamahata <yamahata@valinux.co.jp>
date Wed Jan 28 13:07:23 2009 +0900 (2009-01-28)
parents 831230e53067
children
line source
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 <sound/driver.h>
29 #include <asm/uaccess.h>
30 #include <linux/slab.h>
31 #include <sound/core.h>
32 #include <sound/soundfont.h>
33 #include <sound/seq_oss_legacy.h>
35 /* Prototypes for static functions */
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);
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 }
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 }
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 }
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;
136 if (count < (long)sizeof(patch)) {
137 snd_printk("patch record too small %ld\n", count);
138 return -EINVAL;
139 }
140 if (copy_from_user(&patch, data, sizeof(patch)))
141 return -EFAULT;
143 count -= sizeof(patch);
144 data += sizeof(patch);
146 if (patch.key != SNDRV_OSS_SOUNDFONT_PATCH) {
147 snd_printk("'The wrong kind of patch' %x\n", patch.key);
148 return -EINVAL;
149 }
150 if (count < patch.len) {
151 snd_printk("Patch too short %ld, need %d\n", count, patch.len);
152 return -EINVAL;
153 }
154 if (patch.len < 0) {
155 snd_printk("poor length %d\n", patch.len);
156 return -EINVAL;
157 }
159 if (patch.type == SNDRV_SFNT_OPEN_PATCH) {
160 /* grab sflist to open */
161 lock_preset(sflist);
162 rc = open_patch(sflist, data, count, client);
163 unlock_preset(sflist);
164 return rc;
165 }
167 /* check if other client already opened patch */
168 spin_lock_irqsave(&sflist->lock, flags);
169 if (sflist->open_client != client) {
170 spin_unlock_irqrestore(&sflist->lock, flags);
171 return -EBUSY;
172 }
173 spin_unlock_irqrestore(&sflist->lock, flags);
175 lock_preset(sflist);
176 rc = -EINVAL;
177 switch (patch.type) {
178 case SNDRV_SFNT_LOAD_INFO:
179 rc = load_info(sflist, data, count);
180 break;
181 case SNDRV_SFNT_LOAD_DATA:
182 rc = load_data(sflist, data, count);
183 break;
184 case SNDRV_SFNT_CLOSE_PATCH:
185 rc = close_patch(sflist);
186 break;
187 case SNDRV_SFNT_REPLACE_DATA:
188 /*rc = replace_data(&patch, data, count);*/
189 break;
190 case SNDRV_SFNT_MAP_PRESET:
191 rc = load_map(sflist, data, count);
192 break;
193 case SNDRV_SFNT_PROBE_DATA:
194 rc = probe_data(sflist, patch.optarg);
195 break;
196 case SNDRV_SFNT_REMOVE_INFO:
197 /* patch must be opened */
198 if (!sflist->currsf) {
199 snd_printk("soundfont: remove_info: patch not opened\n");
200 rc = -EINVAL;
201 } else {
202 int bank, instr;
203 bank = ((unsigned short)patch.optarg >> 8) & 0xff;
204 instr = (unsigned short)patch.optarg & 0xff;
205 if (! remove_info(sflist, sflist->currsf, bank, instr))
206 rc = -EINVAL;
207 else
208 rc = 0;
209 }
210 break;
211 }
212 unlock_preset(sflist);
214 return rc;
215 }
218 /* check if specified type is special font (GUS or preset-alias) */
219 static inline int
220 is_special_type(int type)
221 {
222 type &= 0x0f;
223 return (type == SNDRV_SFNT_PAT_TYPE_GUS ||
224 type == SNDRV_SFNT_PAT_TYPE_MAP);
225 }
228 /* open patch; create sf list */
229 static int
230 open_patch(struct snd_sf_list *sflist, const char __user *data,
231 int count, int client)
232 {
233 struct soundfont_open_parm parm;
234 struct snd_soundfont *sf;
235 unsigned long flags;
237 spin_lock_irqsave(&sflist->lock, flags);
238 if (sflist->open_client >= 0 || sflist->currsf) {
239 spin_unlock_irqrestore(&sflist->lock, flags);
240 return -EBUSY;
241 }
242 spin_unlock_irqrestore(&sflist->lock, flags);
244 if (copy_from_user(&parm, data, sizeof(parm)))
245 return -EFAULT;
247 if (is_special_type(parm.type)) {
248 parm.type |= SNDRV_SFNT_PAT_SHARED;
249 sf = newsf(sflist, parm.type, NULL);
250 } else
251 sf = newsf(sflist, parm.type, parm.name);
252 if (sf == NULL) {
253 return -ENOMEM;
254 }
256 spin_lock_irqsave(&sflist->lock, flags);
257 sflist->open_client = client;
258 sflist->currsf = sf;
259 spin_unlock_irqrestore(&sflist->lock, flags);
261 return 0;
262 }
264 /*
265 * Allocate a new soundfont structure.
266 */
267 static struct snd_soundfont *
268 newsf(struct snd_sf_list *sflist, int type, char *name)
269 {
270 struct snd_soundfont *sf;
272 /* check the shared fonts */
273 if (type & SNDRV_SFNT_PAT_SHARED) {
274 for (sf = sflist->fonts; sf; sf = sf->next) {
275 if (is_identical_font(sf, type, name)) {
276 return sf;
277 }
278 }
279 }
281 /* not found -- create a new one */
282 sf = kzalloc(sizeof(*sf), GFP_KERNEL);
283 if (sf == NULL)
284 return NULL;
285 sf->id = sflist->fonts_size;
286 sflist->fonts_size++;
288 /* prepend this record */
289 sf->next = sflist->fonts;
290 sflist->fonts = sf;
292 sf->type = type;
293 sf->zones = NULL;
294 sf->samples = NULL;
295 if (name)
296 memcpy(sf->name, name, SNDRV_SFNT_PATCH_NAME_LEN);
298 return sf;
299 }
301 /* check if the given name matches to the existing list */
302 static int
303 is_identical_font(struct snd_soundfont *sf, int type, unsigned char *name)
304 {
305 return ((sf->type & SNDRV_SFNT_PAT_SHARED) &&
306 (sf->type & 0x0f) == (type & 0x0f) &&
307 (name == NULL ||
308 memcmp(sf->name, name, SNDRV_SFNT_PATCH_NAME_LEN) == 0));
309 }
311 /*
312 * Close the current patch.
313 */
314 static int
315 close_patch(struct snd_sf_list *sflist)
316 {
317 unsigned long flags;
319 spin_lock_irqsave(&sflist->lock, flags);
320 sflist->currsf = NULL;
321 sflist->open_client = -1;
322 spin_unlock_irqrestore(&sflist->lock, flags);
324 rebuild_presets(sflist);
326 return 0;
328 }
330 /* probe sample in the current list -- nothing to be loaded */
331 static int
332 probe_data(struct snd_sf_list *sflist, int sample_id)
333 {
334 /* patch must be opened */
335 if (sflist->currsf) {
336 /* search the specified sample by optarg */
337 if (find_sample(sflist->currsf, sample_id))
338 return 0;
339 }
340 return -EINVAL;
341 }
343 /*
344 * increment zone counter
345 */
346 static void
347 set_zone_counter(struct snd_sf_list *sflist, struct snd_soundfont *sf,
348 struct snd_sf_zone *zp)
349 {
350 zp->counter = sflist->zone_counter++;
351 if (sf->type & SNDRV_SFNT_PAT_LOCKED)
352 sflist->zone_locked = sflist->zone_counter;
353 }
355 /*
356 * allocate a new zone record
357 */
358 static struct snd_sf_zone *
359 sf_zone_new(struct snd_sf_list *sflist, struct snd_soundfont *sf)
360 {
361 struct snd_sf_zone *zp;
363 if ((zp = kzalloc(sizeof(*zp), GFP_KERNEL)) == NULL)
364 return NULL;
365 zp->next = sf->zones;
366 sf->zones = zp;
368 init_voice_info(&zp->v);
370 set_zone_counter(sflist, sf, zp);
371 return zp;
372 }
375 /*
376 * increment sample couter
377 */
378 static void
379 set_sample_counter(struct snd_sf_list *sflist, struct snd_soundfont *sf,
380 struct snd_sf_sample *sp)
381 {
382 sp->counter = sflist->sample_counter++;
383 if (sf->type & SNDRV_SFNT_PAT_LOCKED)
384 sflist->sample_locked = sflist->sample_counter;
385 }
387 /*
388 * allocate a new sample list record
389 */
390 static struct snd_sf_sample *
391 sf_sample_new(struct snd_sf_list *sflist, struct snd_soundfont *sf)
392 {
393 struct snd_sf_sample *sp;
395 if ((sp = kzalloc(sizeof(*sp), GFP_KERNEL)) == NULL)
396 return NULL;
398 sp->next = sf->samples;
399 sf->samples = sp;
401 set_sample_counter(sflist, sf, sp);
402 return sp;
403 }
405 /*
406 * delete sample list -- this is an exceptional job.
407 * only the last allocated sample can be deleted.
408 */
409 static void
410 sf_sample_delete(struct snd_sf_list *sflist, struct snd_soundfont *sf,
411 struct snd_sf_sample *sp)
412 {
413 /* only last sample is accepted */
414 if (sp == sf->samples) {
415 sf->samples = sp->next;
416 kfree(sp);
417 }
418 }
421 /* load voice map */
422 static int
423 load_map(struct snd_sf_list *sflist, const void __user *data, int count)
424 {
425 struct snd_sf_zone *zp, *prevp;
426 struct snd_soundfont *sf;
427 struct soundfont_voice_map map;
429 /* get the link info */
430 if (count < (int)sizeof(map))
431 return -EINVAL;
432 if (copy_from_user(&map, data, sizeof(map)))
433 return -EFAULT;
435 if (map.map_instr < 0 || map.map_instr >= SF_MAX_INSTRUMENTS)
436 return -EINVAL;
438 sf = newsf(sflist, SNDRV_SFNT_PAT_TYPE_MAP|SNDRV_SFNT_PAT_SHARED, NULL);
439 if (sf == NULL)
440 return -ENOMEM;
442 prevp = NULL;
443 for (zp = sf->zones; zp; prevp = zp, zp = zp->next) {
444 if (zp->mapped &&
445 zp->instr == map.map_instr &&
446 zp->bank == map.map_bank &&
447 zp->v.low == map.map_key &&
448 zp->v.start == map.src_instr &&
449 zp->v.end == map.src_bank &&
450 zp->v.fixkey == map.src_key) {
451 /* the same mapping is already present */
452 /* relink this record to the link head */
453 if (prevp) {
454 prevp->next = zp->next;
455 zp->next = sf->zones;
456 sf->zones = zp;
457 }
458 /* update the counter */
459 set_zone_counter(sflist, sf, zp);
460 return 0;
461 }
462 }
464 /* create a new zone */
465 if ((zp = sf_zone_new(sflist, sf)) == NULL)
466 return -ENOMEM;
468 zp->bank = map.map_bank;
469 zp->instr = map.map_instr;
470 zp->mapped = 1;
471 if (map.map_key >= 0) {
472 zp->v.low = map.map_key;
473 zp->v.high = map.map_key;
474 }
475 zp->v.start = map.src_instr;
476 zp->v.end = map.src_bank;
477 zp->v.fixkey = map.src_key;
478 zp->v.sf_id = sf->id;
480 add_preset(sflist, zp);
482 return 0;
483 }
486 /* remove the present instrument layers */
487 static int
488 remove_info(struct snd_sf_list *sflist, struct snd_soundfont *sf,
489 int bank, int instr)
490 {
491 struct snd_sf_zone *prev, *next, *p;
492 int removed = 0;
494 prev = NULL;
495 for (p = sf->zones; p; p = next) {
496 next = p->next;
497 if (! p->mapped &&
498 p->bank == bank && p->instr == instr) {
499 /* remove this layer */
500 if (prev)
501 prev->next = next;
502 else
503 sf->zones = next;
504 removed++;
505 kfree(p);
506 } else
507 prev = p;
508 }
509 if (removed)
510 rebuild_presets(sflist);
511 return removed;
512 }
515 /*
516 * Read an info record from the user buffer and save it on the current
517 * open soundfont.
518 */
519 static int
520 load_info(struct snd_sf_list *sflist, const void __user *data, long count)
521 {
522 struct snd_soundfont *sf;
523 struct snd_sf_zone *zone;
524 struct soundfont_voice_rec_hdr hdr;
525 int i;
527 /* patch must be opened */
528 if ((sf = sflist->currsf) == NULL)
529 return -EINVAL;
531 if (is_special_type(sf->type))
532 return -EINVAL;
534 if (count < (long)sizeof(hdr)) {
535 printk("Soundfont error: invalid patch zone length\n");
536 return -EINVAL;
537 }
538 if (copy_from_user((char*)&hdr, data, sizeof(hdr)))
539 return -EFAULT;
541 data += sizeof(hdr);
542 count -= sizeof(hdr);
544 if (hdr.nvoices <= 0 || hdr.nvoices >= 100) {
545 printk("Soundfont error: Illegal voice number %d\n", hdr.nvoices);
546 return -EINVAL;
547 }
549 if (count < (long)sizeof(struct soundfont_voice_info) * hdr.nvoices) {
550 printk("Soundfont Error: patch length(%ld) is smaller than nvoices(%d)\n",
551 count, hdr.nvoices);
552 return -EINVAL;
553 }
555 switch (hdr.write_mode) {
556 case SNDRV_SFNT_WR_EXCLUSIVE:
557 /* exclusive mode - if the instrument already exists,
558 return error */
559 for (zone = sf->zones; zone; zone = zone->next) {
560 if (!zone->mapped &&
561 zone->bank == hdr.bank &&
562 zone->instr == hdr.instr)
563 return -EINVAL;
564 }
565 break;
566 case SNDRV_SFNT_WR_REPLACE:
567 /* replace mode - remove the instrument if it already exists */
568 remove_info(sflist, sf, hdr.bank, hdr.instr);
569 break;
570 }
572 for (i = 0; i < hdr.nvoices; i++) {
573 struct snd_sf_zone tmpzone;
575 /* copy awe_voice_info parameters */
576 if (copy_from_user(&tmpzone.v, data, sizeof(tmpzone.v))) {
577 return -EFAULT;
578 }
580 data += sizeof(tmpzone.v);
581 count -= sizeof(tmpzone.v);
583 tmpzone.bank = hdr.bank;
584 tmpzone.instr = hdr.instr;
585 tmpzone.mapped = 0;
586 tmpzone.v.sf_id = sf->id;
587 if (tmpzone.v.mode & SNDRV_SFNT_MODE_INIT_PARM)
588 init_voice_parm(&tmpzone.v.parm);
590 /* create a new zone */
591 if ((zone = sf_zone_new(sflist, sf)) == NULL) {
592 return -ENOMEM;
593 }
595 /* copy the temporary data */
596 zone->bank = tmpzone.bank;
597 zone->instr = tmpzone.instr;
598 zone->v = tmpzone.v;
600 /* look up the sample */
601 zone->sample = set_sample(sf, &zone->v);
602 }
604 return 0;
605 }
608 /* initialize voice_info record */
609 static void
610 init_voice_info(struct soundfont_voice_info *avp)
611 {
612 memset(avp, 0, sizeof(*avp));
614 avp->root = 60;
615 avp->high = 127;
616 avp->velhigh = 127;
617 avp->fixkey = -1;
618 avp->fixvel = -1;
619 avp->fixpan = -1;
620 avp->pan = -1;
621 avp->amplitude = 127;
622 avp->scaleTuning = 100;
624 init_voice_parm(&avp->parm);
625 }
627 /* initialize voice_parm record:
628 * Env1/2: delay=0, attack=0, hold=0, sustain=0, decay=0, release=0.
629 * Vibrato and Tremolo effects are zero.
630 * Cutoff is maximum.
631 * Chorus and Reverb effects are zero.
632 */
633 static void
634 init_voice_parm(struct soundfont_voice_parm *pp)
635 {
636 memset(pp, 0, sizeof(*pp));
638 pp->moddelay = 0x8000;
639 pp->modatkhld = 0x7f7f;
640 pp->moddcysus = 0x7f7f;
641 pp->modrelease = 0x807f;
643 pp->voldelay = 0x8000;
644 pp->volatkhld = 0x7f7f;
645 pp->voldcysus = 0x7f7f;
646 pp->volrelease = 0x807f;
648 pp->lfo1delay = 0x8000;
649 pp->lfo2delay = 0x8000;
651 pp->cutoff = 0xff;
652 }
654 /* search the specified sample */
655 static struct snd_sf_sample *
656 set_sample(struct snd_soundfont *sf, struct soundfont_voice_info *avp)
657 {
658 struct snd_sf_sample *sample;
660 sample = find_sample(sf, avp->sample);
661 if (sample == NULL)
662 return NULL;
664 /* add in the actual sample offsets:
665 * The voice_info addresses define only the relative offset
666 * from sample pointers. Here we calculate the actual DRAM
667 * offset from sample pointers.
668 */
669 avp->start += sample->v.start;
670 avp->end += sample->v.end;
671 avp->loopstart += sample->v.loopstart;
672 avp->loopend += sample->v.loopend;
674 /* copy mode flags */
675 avp->sample_mode = sample->v.mode_flags;
677 return sample;
678 }
680 /* find the sample pointer with the given id in the soundfont */
681 static struct snd_sf_sample *
682 find_sample(struct snd_soundfont *sf, int sample_id)
683 {
684 struct snd_sf_sample *p;
686 if (sf == NULL)
687 return NULL;
689 for (p = sf->samples; p; p = p->next) {
690 if (p->v.sample == sample_id)
691 return p;
692 }
693 return NULL;
694 }
697 /*
698 * Load sample information, this can include data to be loaded onto
699 * the soundcard. It can also just be a pointer into soundcard ROM.
700 * If there is data it will be written to the soundcard via the callback
701 * routine.
702 */
703 static int
704 load_data(struct snd_sf_list *sflist, const void __user *data, long count)
705 {
706 struct snd_soundfont *sf;
707 struct soundfont_sample_info sample_info;
708 struct snd_sf_sample *sp;
709 long off;
711 /* patch must be opened */
712 if ((sf = sflist->currsf) == NULL)
713 return -EINVAL;
715 if (is_special_type(sf->type))
716 return -EINVAL;
718 if (copy_from_user(&sample_info, data, sizeof(sample_info)))
719 return -EFAULT;
721 off = sizeof(sample_info);
723 if (sample_info.size != (count-off)/2)
724 return -EINVAL;
726 /* Check for dup */
727 if (find_sample(sf, sample_info.sample)) {
728 /* if shared sample, skip this data */
729 if (sf->type & SNDRV_SFNT_PAT_SHARED)
730 return 0;
731 return -EINVAL;
732 }
734 /* Allocate a new sample structure */
735 if ((sp = sf_sample_new(sflist, sf)) == NULL)
736 return -ENOMEM;
738 sp->v = sample_info;
739 sp->v.sf_id = sf->id;
740 sp->v.dummy = 0;
741 sp->v.truesize = sp->v.size;
743 /*
744 * If there is wave data then load it.
745 */
746 if (sp->v.size > 0) {
747 int rc;
748 rc = sflist->callback.sample_new
749 (sflist->callback.private_data, sp, sflist->memhdr,
750 data + off, count - off);
751 if (rc < 0) {
752 sf_sample_delete(sflist, sf, sp);
753 return rc;
754 }
755 sflist->mem_used += sp->v.truesize;
756 }
758 return count;
759 }
762 /* log2_tbl[i] = log2(i+128) * 0x10000 */
763 static int log_tbl[129] = {
764 0x70000, 0x702df, 0x705b9, 0x7088e, 0x70b5d, 0x70e26, 0x710eb, 0x713aa,
765 0x71663, 0x71918, 0x71bc8, 0x71e72, 0x72118, 0x723b9, 0x72655, 0x728ed,
766 0x72b80, 0x72e0e, 0x73098, 0x7331d, 0x7359e, 0x7381b, 0x73a93, 0x73d08,
767 0x73f78, 0x741e4, 0x7444c, 0x746b0, 0x74910, 0x74b6c, 0x74dc4, 0x75019,
768 0x75269, 0x754b6, 0x75700, 0x75946, 0x75b88, 0x75dc7, 0x76002, 0x7623a,
769 0x7646e, 0x766a0, 0x768cd, 0x76af8, 0x76d1f, 0x76f43, 0x77164, 0x77382,
770 0x7759d, 0x777b4, 0x779c9, 0x77bdb, 0x77dea, 0x77ff5, 0x781fe, 0x78404,
771 0x78608, 0x78808, 0x78a06, 0x78c01, 0x78df9, 0x78fef, 0x791e2, 0x793d2,
772 0x795c0, 0x797ab, 0x79993, 0x79b79, 0x79d5d, 0x79f3e, 0x7a11d, 0x7a2f9,
773 0x7a4d3, 0x7a6ab, 0x7a880, 0x7aa53, 0x7ac24, 0x7adf2, 0x7afbe, 0x7b188,
774 0x7b350, 0x7b515, 0x7b6d8, 0x7b899, 0x7ba58, 0x7bc15, 0x7bdd0, 0x7bf89,
775 0x7c140, 0x7c2f5, 0x7c4a7, 0x7c658, 0x7c807, 0x7c9b3, 0x7cb5e, 0x7cd07,
776 0x7ceae, 0x7d053, 0x7d1f7, 0x7d398, 0x7d538, 0x7d6d6, 0x7d872, 0x7da0c,
777 0x7dba4, 0x7dd3b, 0x7ded0, 0x7e063, 0x7e1f4, 0x7e384, 0x7e512, 0x7e69f,
778 0x7e829, 0x7e9b3, 0x7eb3a, 0x7ecc0, 0x7ee44, 0x7efc7, 0x7f148, 0x7f2c8,
779 0x7f446, 0x7f5c2, 0x7f73d, 0x7f8b7, 0x7fa2f, 0x7fba5, 0x7fd1a, 0x7fe8d,
780 0x80000,
781 };
783 /* convert from linear to log value
784 *
785 * conversion: value = log2(amount / base) * ratio
786 *
787 * argument:
788 * amount = linear value (unsigned, 32bit max)
789 * offset = base offset (:= log2(base) * 0x10000)
790 * ratio = division ratio
791 *
792 */
793 int
794 snd_sf_linear_to_log(unsigned int amount, int offset, int ratio)
795 {
796 int v;
797 int s, low, bit;
799 if (amount < 2)
800 return 0;
801 for (bit = 0; ! (amount & 0x80000000L); bit++)
802 amount <<= 1;
803 s = (amount >> 24) & 0x7f;
804 low = (amount >> 16) & 0xff;
805 /* linear approxmimation by lower 8 bit */
806 v = (log_tbl[s + 1] * low + log_tbl[s] * (0x100 - low)) >> 8;
807 v -= offset;
808 v = (v * ratio) >> 16;
809 v += (24 - bit) * ratio;
810 return v;
811 }
813 EXPORT_SYMBOL(snd_sf_linear_to_log);
816 #define OFFSET_MSEC 653117 /* base = 1000 */
817 #define OFFSET_ABSCENT 851781 /* base = 8176 */
818 #define OFFSET_SAMPLERATE 1011119 /* base = 44100 */
820 #define ABSCENT_RATIO 1200
821 #define TIMECENT_RATIO 1200
822 #define SAMPLERATE_RATIO 4096
824 /*
825 * mHz to abscent
826 * conversion: abscent = log2(MHz / 8176) * 1200
827 */
828 static int
829 freq_to_note(int mhz)
830 {
831 return snd_sf_linear_to_log(mhz, OFFSET_ABSCENT, ABSCENT_RATIO);
832 }
834 /* convert Hz to AWE32 rate offset:
835 * sample pitch offset for the specified sample rate
836 * rate=44100 is no offset, each 4096 is 1 octave (twice).
837 * eg, when rate is 22050, this offset becomes -4096.
838 *
839 * conversion: offset = log2(Hz / 44100) * 4096
840 */
841 static int
842 calc_rate_offset(int hz)
843 {
844 return snd_sf_linear_to_log(hz, OFFSET_SAMPLERATE, SAMPLERATE_RATIO);
845 }
848 /* calculate GUS envelope time */
849 static int
850 calc_gus_envelope_time(int rate, int start, int end)
851 {
852 int r, p, t;
853 r = (3 - ((rate >> 6) & 3)) * 3;
854 p = rate & 0x3f;
855 t = end - start;
856 if (t < 0) t = -t;
857 if (13 > r)
858 t = t << (13 - r);
859 else
860 t = t >> (r - 13);
861 return (t * 10) / (p * 441);
862 }
864 /* convert envelope time parameter to soundfont parameters */
866 /* attack & decay/release time table (msec) */
867 static short attack_time_tbl[128] = {
868 32767, 32767, 5989, 4235, 2994, 2518, 2117, 1780, 1497, 1373, 1259, 1154, 1058, 970, 890, 816,
869 707, 691, 662, 634, 607, 581, 557, 533, 510, 489, 468, 448, 429, 411, 393, 377,
870 361, 345, 331, 317, 303, 290, 278, 266, 255, 244, 234, 224, 214, 205, 196, 188,
871 180, 172, 165, 158, 151, 145, 139, 133, 127, 122, 117, 112, 107, 102, 98, 94,
872 90, 86, 82, 79, 75, 72, 69, 66, 63, 61, 58, 56, 53, 51, 49, 47,
873 45, 43, 41, 39, 37, 36, 34, 33, 31, 30, 29, 28, 26, 25, 24, 23,
874 22, 21, 20, 19, 19, 18, 17, 16, 16, 15, 15, 14, 13, 13, 12, 12,
875 11, 11, 10, 10, 10, 9, 9, 8, 8, 8, 8, 7, 7, 7, 6, 0,
876 };
878 static short decay_time_tbl[128] = {
879 32767, 32767, 22614, 15990, 11307, 9508, 7995, 6723, 5653, 5184, 4754, 4359, 3997, 3665, 3361, 3082,
880 2828, 2765, 2648, 2535, 2428, 2325, 2226, 2132, 2042, 1955, 1872, 1793, 1717, 1644, 1574, 1507,
881 1443, 1382, 1324, 1267, 1214, 1162, 1113, 1066, 978, 936, 897, 859, 822, 787, 754, 722,
882 691, 662, 634, 607, 581, 557, 533, 510, 489, 468, 448, 429, 411, 393, 377, 361,
883 345, 331, 317, 303, 290, 278, 266, 255, 244, 234, 224, 214, 205, 196, 188, 180,
884 172, 165, 158, 151, 145, 139, 133, 127, 122, 117, 112, 107, 102, 98, 94, 90,
885 86, 82, 79, 75, 72, 69, 66, 63, 61, 58, 56, 53, 51, 49, 47, 45,
886 43, 41, 39, 37, 36, 34, 33, 31, 30, 29, 28, 26, 25, 24, 23, 22,
887 };
889 /* delay time = 0x8000 - msec/92 */
890 int
891 snd_sf_calc_parm_hold(int msec)
892 {
893 int val = (0x7f * 92 - msec) / 92;
894 if (val < 1) val = 1;
895 if (val >= 126) val = 126;
896 return val;
897 }
899 /* search an index for specified time from given time table */
900 static int
901 calc_parm_search(int msec, short *table)
902 {
903 int left = 1, right = 127, mid;
904 while (left < right) {
905 mid = (left + right) / 2;
906 if (msec < (int)table[mid])
907 left = mid + 1;
908 else
909 right = mid;
910 }
911 return left;
912 }
914 /* attack time: search from time table */
915 int
916 snd_sf_calc_parm_attack(int msec)
917 {
918 return calc_parm_search(msec, attack_time_tbl);
919 }
921 /* decay/release time: search from time table */
922 int
923 snd_sf_calc_parm_decay(int msec)
924 {
925 return calc_parm_search(msec, decay_time_tbl);
926 }
928 int snd_sf_vol_table[128] = {
929 255,111,95,86,79,74,70,66,63,61,58,56,54,52,50,49,
930 47,46,45,43,42,41,40,39,38,37,36,35,34,34,33,32,
931 31,31,30,29,29,28,27,27,26,26,25,24,24,23,23,22,
932 22,21,21,21,20,20,19,19,18,18,18,17,17,16,16,16,
933 15,15,15,14,14,14,13,13,13,12,12,12,11,11,11,10,
934 10,10,10,9,9,9,8,8,8,8,7,7,7,7,6,6,
935 6,6,5,5,5,5,5,4,4,4,4,3,3,3,3,3,
936 2,2,2,2,2,1,1,1,1,1,0,0,0,0,0,0,
937 };
940 #define calc_gus_sustain(val) (0x7f - snd_sf_vol_table[(val)/2])
941 #define calc_gus_attenuation(val) snd_sf_vol_table[(val)/2]
943 /* load GUS patch */
944 static int
945 load_guspatch(struct snd_sf_list *sflist, const char __user *data,
946 long count, int client)
947 {
948 struct patch_info patch;
949 struct snd_soundfont *sf;
950 struct snd_sf_zone *zone;
951 struct snd_sf_sample *smp;
952 int note, sample_id;
953 int rc;
955 if (count < (long)sizeof(patch)) {
956 snd_printk("patch record too small %ld\n", count);
957 return -EINVAL;
958 }
959 if (copy_from_user(&patch, data, sizeof(patch)))
960 return -EFAULT;
962 count -= sizeof(patch);
963 data += sizeof(patch);
965 sf = newsf(sflist, SNDRV_SFNT_PAT_TYPE_GUS|SNDRV_SFNT_PAT_SHARED, NULL);
966 if (sf == NULL)
967 return -ENOMEM;
968 if ((smp = sf_sample_new(sflist, sf)) == NULL)
969 return -ENOMEM;
970 sample_id = sflist->sample_counter;
971 smp->v.sample = sample_id;
972 smp->v.start = 0;
973 smp->v.end = patch.len;
974 smp->v.loopstart = patch.loop_start;
975 smp->v.loopend = patch.loop_end;
976 smp->v.size = patch.len;
978 /* set up mode flags */
979 smp->v.mode_flags = 0;
980 if (!(patch.mode & WAVE_16_BITS))
981 smp->v.mode_flags |= SNDRV_SFNT_SAMPLE_8BITS;
982 if (patch.mode & WAVE_UNSIGNED)
983 smp->v.mode_flags |= SNDRV_SFNT_SAMPLE_UNSIGNED;
984 smp->v.mode_flags |= SNDRV_SFNT_SAMPLE_NO_BLANK;
985 if (!(patch.mode & (WAVE_LOOPING|WAVE_BIDIR_LOOP|WAVE_LOOP_BACK)))
986 smp->v.mode_flags |= SNDRV_SFNT_SAMPLE_SINGLESHOT;
987 if (patch.mode & WAVE_BIDIR_LOOP)
988 smp->v.mode_flags |= SNDRV_SFNT_SAMPLE_BIDIR_LOOP;
989 if (patch.mode & WAVE_LOOP_BACK)
990 smp->v.mode_flags |= SNDRV_SFNT_SAMPLE_REVERSE_LOOP;
992 if (patch.mode & WAVE_16_BITS) {
993 /* convert to word offsets */
994 smp->v.size /= 2;
995 smp->v.end /= 2;
996 smp->v.loopstart /= 2;
997 smp->v.loopend /= 2;
998 }
999 /*smp->v.loopend++;*/
1001 smp->v.dummy = 0;
1002 smp->v.truesize = 0;
1003 smp->v.sf_id = sf->id;
1005 /* set up voice info */
1006 if ((zone = sf_zone_new(sflist, sf)) == NULL) {
1007 sf_sample_delete(sflist, sf, smp);
1008 return -ENOMEM;
1011 /*
1012 * load wave data
1013 */
1014 if (sflist->callback.sample_new) {
1015 rc = sflist->callback.sample_new
1016 (sflist->callback.private_data, smp, sflist->memhdr,
1017 data, count);
1018 if (rc < 0) {
1019 sf_sample_delete(sflist, sf, smp);
1020 return rc;
1022 /* memory offset is updated after */
1025 /* update the memory offset here */
1026 sflist->mem_used += smp->v.truesize;
1028 zone->v.sample = sample_id; /* the last sample */
1029 zone->v.rate_offset = calc_rate_offset(patch.base_freq);
1030 note = freq_to_note(patch.base_note);
1031 zone->v.root = note / 100;
1032 zone->v.tune = -(note % 100);
1033 zone->v.low = (freq_to_note(patch.low_note) + 99) / 100;
1034 zone->v.high = freq_to_note(patch.high_note) / 100;
1035 /* panning position; -128 - 127 => 0-127 */
1036 zone->v.pan = (patch.panning + 128) / 2;
1037 #if 0
1038 snd_printk("gus: basefrq=%d (ofs=%d) root=%d,tune=%d, range:%d-%d\n",
1039 (int)patch.base_freq, zone->v.rate_offset,
1040 zone->v.root, zone->v.tune, zone->v.low, zone->v.high);
1041 #endif
1043 /* detuning is ignored */
1044 /* 6points volume envelope */
1045 if (patch.mode & WAVE_ENVELOPES) {
1046 int attack, hold, decay, release;
1047 attack = calc_gus_envelope_time
1048 (patch.env_rate[0], 0, patch.env_offset[0]);
1049 hold = calc_gus_envelope_time
1050 (patch.env_rate[1], patch.env_offset[0],
1051 patch.env_offset[1]);
1052 decay = calc_gus_envelope_time
1053 (patch.env_rate[2], patch.env_offset[1],
1054 patch.env_offset[2]);
1055 release = calc_gus_envelope_time
1056 (patch.env_rate[3], patch.env_offset[1],
1057 patch.env_offset[4]);
1058 release += calc_gus_envelope_time
1059 (patch.env_rate[4], patch.env_offset[3],
1060 patch.env_offset[4]);
1061 release += calc_gus_envelope_time
1062 (patch.env_rate[5], patch.env_offset[4],
1063 patch.env_offset[5]);
1064 zone->v.parm.volatkhld =
1065 (snd_sf_calc_parm_hold(hold) << 8) |
1066 snd_sf_calc_parm_attack(attack);
1067 zone->v.parm.voldcysus = (calc_gus_sustain(patch.env_offset[2]) << 8) |
1068 snd_sf_calc_parm_decay(decay);
1069 zone->v.parm.volrelease = 0x8000 | snd_sf_calc_parm_decay(release);
1070 zone->v.attenuation = calc_gus_attenuation(patch.env_offset[0]);
1071 #if 0
1072 snd_printk("gus: atkhld=%x, dcysus=%x, volrel=%x, att=%d\n",
1073 zone->v.parm.volatkhld,
1074 zone->v.parm.voldcysus,
1075 zone->v.parm.volrelease,
1076 zone->v.attenuation);
1077 #endif
1080 /* fast release */
1081 if (patch.mode & WAVE_FAST_RELEASE) {
1082 zone->v.parm.volrelease = 0x807f;
1085 /* tremolo effect */
1086 if (patch.mode & WAVE_TREMOLO) {
1087 int rate = (patch.tremolo_rate * 1000 / 38) / 42;
1088 zone->v.parm.tremfrq = ((patch.tremolo_depth / 2) << 8) | rate;
1090 /* vibrato effect */
1091 if (patch.mode & WAVE_VIBRATO) {
1092 int rate = (patch.vibrato_rate * 1000 / 38) / 42;
1093 zone->v.parm.fm2frq2 = ((patch.vibrato_depth / 6) << 8) | rate;
1096 /* scale_freq, scale_factor, volume, and fractions not implemented */
1098 if (!(smp->v.mode_flags & SNDRV_SFNT_SAMPLE_SINGLESHOT))
1099 zone->v.mode = SNDRV_SFNT_MODE_LOOPING;
1100 else
1101 zone->v.mode = 0;
1103 /* append to the tail of the list */
1104 /*zone->bank = ctrls[AWE_MD_GUS_BANK];*/
1105 zone->bank = 0;
1106 zone->instr = patch.instr_no;
1107 zone->mapped = 0;
1108 zone->v.sf_id = sf->id;
1110 zone->sample = set_sample(sf, &zone->v);
1112 /* rebuild preset now */
1113 add_preset(sflist, zone);
1115 return 0;
1118 /* load GUS patch */
1119 int
1120 snd_soundfont_load_guspatch(struct snd_sf_list *sflist, const char __user *data,
1121 long count, int client)
1123 int rc;
1124 lock_preset(sflist);
1125 rc = load_guspatch(sflist, data, count, client);
1126 unlock_preset(sflist);
1127 return rc;
1131 /*
1132 * Rebuild the preset table. This is like a hash table in that it allows
1133 * quick access to the zone information. For each preset there are zone
1134 * structures linked by next_instr and by next_zone. Former is the whole
1135 * link for this preset, and latter is the link for zone (i.e. instrument/
1136 * bank/key combination).
1137 */
1138 static void
1139 rebuild_presets(struct snd_sf_list *sflist)
1141 struct snd_soundfont *sf;
1142 struct snd_sf_zone *cur;
1144 /* clear preset table */
1145 memset(sflist->presets, 0, sizeof(sflist->presets));
1147 /* search all fonts and insert each font */
1148 for (sf = sflist->fonts; sf; sf = sf->next) {
1149 for (cur = sf->zones; cur; cur = cur->next) {
1150 if (! cur->mapped && cur->sample == NULL) {
1151 /* try again to search the corresponding sample */
1152 cur->sample = set_sample(sf, &cur->v);
1153 if (cur->sample == NULL)
1154 continue;
1157 add_preset(sflist, cur);
1163 /*
1164 * add the given zone to preset table
1165 */
1166 static void
1167 add_preset(struct snd_sf_list *sflist, struct snd_sf_zone *cur)
1169 struct snd_sf_zone *zone;
1170 int index;
1172 zone = search_first_zone(sflist, cur->bank, cur->instr, cur->v.low);
1173 if (zone && zone->v.sf_id != cur->v.sf_id) {
1174 /* different instrument was already defined */
1175 struct snd_sf_zone *p;
1176 /* compare the allocated time */
1177 for (p = zone; p; p = p->next_zone) {
1178 if (p->counter > cur->counter)
1179 /* the current is older.. skipped */
1180 return;
1182 /* remove old zones */
1183 delete_preset(sflist, zone);
1184 zone = NULL; /* do not forget to clear this! */
1187 /* prepend this zone */
1188 if ((index = get_index(cur->bank, cur->instr, cur->v.low)) < 0)
1189 return;
1190 cur->next_zone = zone; /* zone link */
1191 cur->next_instr = sflist->presets[index]; /* preset table link */
1192 sflist->presets[index] = cur;
1195 /*
1196 * delete the given zones from preset_table
1197 */
1198 static void
1199 delete_preset(struct snd_sf_list *sflist, struct snd_sf_zone *zp)
1201 int index;
1202 struct snd_sf_zone *p;
1204 if ((index = get_index(zp->bank, zp->instr, zp->v.low)) < 0)
1205 return;
1206 for (p = sflist->presets[index]; p; p = p->next_instr) {
1207 while (p->next_instr == zp) {
1208 p->next_instr = zp->next_instr;
1209 zp = zp->next_zone;
1210 if (zp == NULL)
1211 return;
1217 /*
1218 * Search matching zones from preset table.
1219 * The note can be rewritten by preset mapping (alias).
1220 * The found zones are stored on 'table' array. max_layers defines
1221 * the maximum number of elements in this array.
1222 * This function returns the number of found zones. 0 if not found.
1223 */
1224 int
1225 snd_soundfont_search_zone(struct snd_sf_list *sflist, int *notep, int vel,
1226 int preset, int bank,
1227 int def_preset, int def_bank,
1228 struct snd_sf_zone **table, int max_layers)
1230 int nvoices;
1231 unsigned long flags;
1233 /* this function is supposed to be called atomically,
1234 * so we check the lock. if it's busy, just returns 0 to
1235 * tell the caller the busy state
1236 */
1237 spin_lock_irqsave(&sflist->lock, flags);
1238 if (sflist->presets_locked) {
1239 spin_unlock_irqrestore(&sflist->lock, flags);
1240 return 0;
1242 nvoices = search_zones(sflist, notep, vel, preset, bank,
1243 table, max_layers, 0);
1244 if (! nvoices) {
1245 if (preset != def_preset || bank != def_bank)
1246 nvoices = search_zones(sflist, notep, vel,
1247 def_preset, def_bank,
1248 table, max_layers, 0);
1250 spin_unlock_irqrestore(&sflist->lock, flags);
1251 return nvoices;
1255 /*
1256 * search the first matching zone
1257 */
1258 static struct snd_sf_zone *
1259 search_first_zone(struct snd_sf_list *sflist, int bank, int preset, int key)
1261 int index;
1262 struct snd_sf_zone *zp;
1264 if ((index = get_index(bank, preset, key)) < 0)
1265 return NULL;
1266 for (zp = sflist->presets[index]; zp; zp = zp->next_instr) {
1267 if (zp->instr == preset && zp->bank == bank)
1268 return zp;
1270 return NULL;
1274 /*
1275 * search matching zones from sflist. can be called recursively.
1276 */
1277 static int
1278 search_zones(struct snd_sf_list *sflist, int *notep, int vel,
1279 int preset, int bank, struct snd_sf_zone **table,
1280 int max_layers, int level)
1282 struct snd_sf_zone *zp;
1283 int nvoices;
1285 zp = search_first_zone(sflist, bank, preset, *notep);
1286 nvoices = 0;
1287 for (; zp; zp = zp->next_zone) {
1288 if (*notep >= zp->v.low && *notep <= zp->v.high &&
1289 vel >= zp->v.vellow && vel <= zp->v.velhigh) {
1290 if (zp->mapped) {
1291 /* search preset mapping (aliasing) */
1292 int key = zp->v.fixkey;
1293 preset = zp->v.start;
1294 bank = zp->v.end;
1296 if (level > 5) /* too deep alias level */
1297 return 0;
1298 if (key < 0)
1299 key = *notep;
1300 nvoices = search_zones(sflist, &key, vel,
1301 preset, bank, table,
1302 max_layers, level + 1);
1303 if (nvoices > 0)
1304 *notep = key;
1305 break;
1307 table[nvoices++] = zp;
1308 if (nvoices >= max_layers)
1309 break;
1313 return nvoices;
1317 /* calculate the index of preset table:
1318 * drums are mapped from 128 to 255 according to its note key.
1319 * other instruments are mapped from 0 to 127.
1320 * if the index is out of range, return -1.
1321 */
1322 static int
1323 get_index(int bank, int instr, int key)
1325 int index;
1326 if (SF_IS_DRUM_BANK(bank))
1327 index = key + SF_MAX_INSTRUMENTS;
1328 else
1329 index = instr;
1330 index = index % SF_MAX_PRESETS;
1331 if (index < 0)
1332 return -1;
1333 return index;
1336 /*
1337 * Initialise the sflist structure.
1338 */
1339 static void
1340 snd_sf_init(struct snd_sf_list *sflist)
1342 memset(sflist->presets, 0, sizeof(sflist->presets));
1344 sflist->mem_used = 0;
1345 sflist->currsf = NULL;
1346 sflist->open_client = -1;
1347 sflist->fonts = NULL;
1348 sflist->fonts_size = 0;
1349 sflist->zone_counter = 0;
1350 sflist->sample_counter = 0;
1351 sflist->zone_locked = 0;
1352 sflist->sample_locked = 0;
1355 /*
1356 * Release all list records
1357 */
1358 static void
1359 snd_sf_clear(struct snd_sf_list *sflist)
1361 struct snd_soundfont *sf, *nextsf;
1362 struct snd_sf_zone *zp, *nextzp;
1363 struct snd_sf_sample *sp, *nextsp;
1365 for (sf = sflist->fonts; sf; sf = nextsf) {
1366 nextsf = sf->next;
1367 for (zp = sf->zones; zp; zp = nextzp) {
1368 nextzp = zp->next;
1369 kfree(zp);
1371 for (sp = sf->samples; sp; sp = nextsp) {
1372 nextsp = sp->next;
1373 if (sflist->callback.sample_free)
1374 sflist->callback.sample_free(sflist->callback.private_data,
1375 sp, sflist->memhdr);
1376 kfree(sp);
1378 kfree(sf);
1381 snd_sf_init(sflist);
1385 /*
1386 * Create a new sflist structure
1387 */
1388 struct snd_sf_list *
1389 snd_sf_new(struct snd_sf_callback *callback, struct snd_util_memhdr *hdr)
1391 struct snd_sf_list *sflist;
1393 if ((sflist = kzalloc(sizeof(*sflist), GFP_KERNEL)) == NULL)
1394 return NULL;
1396 mutex_init(&sflist->presets_mutex);
1397 spin_lock_init(&sflist->lock);
1398 sflist->memhdr = hdr;
1400 if (callback)
1401 sflist->callback = *callback;
1403 snd_sf_init(sflist);
1404 return sflist;
1408 /*
1409 * Free everything allocated off the sflist structure.
1410 */
1411 void
1412 snd_sf_free(struct snd_sf_list *sflist)
1414 if (sflist == NULL)
1415 return;
1417 lock_preset(sflist);
1418 if (sflist->callback.sample_reset)
1419 sflist->callback.sample_reset(sflist->callback.private_data);
1420 snd_sf_clear(sflist);
1421 unlock_preset(sflist);
1423 kfree(sflist);
1426 /*
1427 * Remove all samples
1428 * The soundcard should be silet before calling this function.
1429 */
1430 int
1431 snd_soundfont_remove_samples(struct snd_sf_list *sflist)
1433 lock_preset(sflist);
1434 if (sflist->callback.sample_reset)
1435 sflist->callback.sample_reset(sflist->callback.private_data);
1436 snd_sf_clear(sflist);
1437 unlock_preset(sflist);
1439 return 0;
1442 /*
1443 * Remove unlocked samples.
1444 * The soundcard should be silent before calling this function.
1445 */
1446 int
1447 snd_soundfont_remove_unlocked(struct snd_sf_list *sflist)
1449 struct snd_soundfont *sf;
1450 struct snd_sf_zone *zp, *nextzp;
1451 struct snd_sf_sample *sp, *nextsp;
1453 lock_preset(sflist);
1455 if (sflist->callback.sample_reset)
1456 sflist->callback.sample_reset(sflist->callback.private_data);
1458 /* to be sure */
1459 memset(sflist->presets, 0, sizeof(sflist->presets));
1461 for (sf = sflist->fonts; sf; sf = sf->next) {
1462 for (zp = sf->zones; zp; zp = nextzp) {
1463 if (zp->counter < sflist->zone_locked)
1464 break;
1465 nextzp = zp->next;
1466 sf->zones = nextzp;
1467 kfree(zp);
1470 for (sp = sf->samples; sp; sp = nextsp) {
1471 if (sp->counter < sflist->sample_locked)
1472 break;
1473 nextsp = sp->next;
1474 sf->samples = nextsp;
1475 sflist->mem_used -= sp->v.truesize;
1476 if (sflist->callback.sample_free)
1477 sflist->callback.sample_free(sflist->callback.private_data,
1478 sp, sflist->memhdr);
1479 kfree(sp);
1483 sflist->zone_counter = sflist->zone_locked;
1484 sflist->sample_counter = sflist->sample_locked;
1486 rebuild_presets(sflist);
1488 unlock_preset(sflist);
1489 return 0;