2
* Soundfont generic routines.
3
* It is intended that these should be used by any driver that is willing
4
* to accept soundfont patches.
6
* Copyright (C) 1999 Steve Ratcliffe
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* Copyright (c) 1999-2000 Takashi Iwai <tiwai@suse.de>
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* 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.
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* 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.
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
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* Deal with reading in of a soundfont. Code follows the OSS way
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* of doing things so that the old sfxload utility can be used.
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* Everything may change when there is an alsa way of doing things.
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#include <asm/uaccess.h>
29
#include <linux/slab.h>
30
#include <linux/export.h>
31
#include <sound/core.h>
32
#include <sound/soundfont.h>
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#include <sound/seq_oss_legacy.h>
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/* Prototypes for static functions */
37
static int open_patch(struct snd_sf_list *sflist, const char __user *data,
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int count, int client);
39
static struct snd_soundfont *newsf(struct snd_sf_list *sflist, int type, char *name);
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static int is_identical_font(struct snd_soundfont *sf, int type, unsigned char *name);
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static int close_patch(struct snd_sf_list *sflist);
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static int probe_data(struct snd_sf_list *sflist, int sample_id);
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static void set_zone_counter(struct snd_sf_list *sflist,
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struct snd_soundfont *sf, struct snd_sf_zone *zp);
45
static struct snd_sf_zone *sf_zone_new(struct snd_sf_list *sflist,
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struct snd_soundfont *sf);
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static void set_sample_counter(struct snd_sf_list *sflist,
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struct snd_soundfont *sf, struct snd_sf_sample *sp);
49
static struct snd_sf_sample *sf_sample_new(struct snd_sf_list *sflist,
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struct snd_soundfont *sf);
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static void sf_sample_delete(struct snd_sf_list *sflist,
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struct snd_soundfont *sf, struct snd_sf_sample *sp);
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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);
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static int remove_info(struct snd_sf_list *sflist, struct snd_soundfont *sf,
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static void init_voice_info(struct soundfont_voice_info *avp);
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static void init_voice_parm(struct soundfont_voice_parm *pp);
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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);
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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);
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static void delete_preset(struct snd_sf_list *sflist, struct snd_sf_zone *zp);
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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,
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int preset, int bank, struct snd_sf_zone **table,
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int max_layers, int level);
71
static int get_index(int bank, int instr, int key);
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static void snd_sf_init(struct snd_sf_list *sflist);
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static void snd_sf_clear(struct snd_sf_list *sflist);
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* lock access to sflist
79
lock_preset(struct snd_sf_list *sflist)
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mutex_lock(&sflist->presets_mutex);
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spin_lock_irqsave(&sflist->lock, flags);
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sflist->presets_locked = 1;
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spin_unlock_irqrestore(&sflist->lock, flags);
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unlock_preset(struct snd_sf_list *sflist)
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spin_lock_irqsave(&sflist->lock, flags);
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sflist->presets_locked = 0;
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spin_unlock_irqrestore(&sflist->lock, flags);
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mutex_unlock(&sflist->presets_mutex);
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* close the patch if the patch was opened by this client.
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snd_soundfont_close_check(struct snd_sf_list *sflist, int client)
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spin_lock_irqsave(&sflist->lock, flags);
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if (sflist->open_client == client) {
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spin_unlock_irqrestore(&sflist->lock, flags);
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return close_patch(sflist);
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spin_unlock_irqrestore(&sflist->lock, flags);
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* Deal with a soundfont patch. Any driver could use these routines
122
* although it was designed for the AWE64.
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* The sample_write and callargs pararameters allow a callback into
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* the actual driver to write sample data to the board or whatever
126
* it wants to do with it.
129
snd_soundfont_load(struct snd_sf_list *sflist, const void __user *data,
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long count, int client)
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struct soundfont_patch_info patch;
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if (count < (long)sizeof(patch)) {
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snd_printk(KERN_ERR "patch record too small %ld\n", count);
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if (copy_from_user(&patch, data, sizeof(patch)))
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count -= sizeof(patch);
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data += sizeof(patch);
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if (patch.key != SNDRV_OSS_SOUNDFONT_PATCH) {
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snd_printk(KERN_ERR "The wrong kind of patch %x\n", patch.key);
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if (count < patch.len) {
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snd_printk(KERN_ERR "Patch too short %ld, need %d\n",
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snd_printk(KERN_ERR "poor length %d\n", patch.len);
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if (patch.type == SNDRV_SFNT_OPEN_PATCH) {
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/* grab sflist to open */
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rc = open_patch(sflist, data, count, client);
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unlock_preset(sflist);
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/* check if other client already opened patch */
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spin_lock_irqsave(&sflist->lock, flags);
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if (sflist->open_client != client) {
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spin_unlock_irqrestore(&sflist->lock, flags);
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spin_unlock_irqrestore(&sflist->lock, flags);
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switch (patch.type) {
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case SNDRV_SFNT_LOAD_INFO:
180
rc = load_info(sflist, data, count);
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case SNDRV_SFNT_LOAD_DATA:
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rc = load_data(sflist, data, count);
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case SNDRV_SFNT_CLOSE_PATCH:
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rc = close_patch(sflist);
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case SNDRV_SFNT_REPLACE_DATA:
189
/*rc = replace_data(&patch, data, count);*/
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case SNDRV_SFNT_MAP_PRESET:
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rc = load_map(sflist, data, count);
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case SNDRV_SFNT_PROBE_DATA:
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rc = probe_data(sflist, patch.optarg);
197
case SNDRV_SFNT_REMOVE_INFO:
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/* patch must be opened */
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if (!sflist->currsf) {
200
snd_printk(KERN_ERR "soundfont: remove_info: "
201
"patch not opened\n");
205
bank = ((unsigned short)patch.optarg >> 8) & 0xff;
206
instr = (unsigned short)patch.optarg & 0xff;
207
if (! remove_info(sflist, sflist->currsf, bank, instr))
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unlock_preset(sflist);
220
/* check if specified type is special font (GUS or preset-alias) */
222
is_special_type(int type)
225
return (type == SNDRV_SFNT_PAT_TYPE_GUS ||
226
type == SNDRV_SFNT_PAT_TYPE_MAP);
230
/* open patch; create sf list */
232
open_patch(struct snd_sf_list *sflist, const char __user *data,
233
int count, int client)
235
struct soundfont_open_parm parm;
236
struct snd_soundfont *sf;
239
spin_lock_irqsave(&sflist->lock, flags);
240
if (sflist->open_client >= 0 || sflist->currsf) {
241
spin_unlock_irqrestore(&sflist->lock, flags);
244
spin_unlock_irqrestore(&sflist->lock, flags);
246
if (copy_from_user(&parm, data, sizeof(parm)))
249
if (is_special_type(parm.type)) {
250
parm.type |= SNDRV_SFNT_PAT_SHARED;
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sf = newsf(sflist, parm.type, NULL);
253
sf = newsf(sflist, parm.type, parm.name);
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spin_lock_irqsave(&sflist->lock, flags);
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sflist->open_client = client;
261
spin_unlock_irqrestore(&sflist->lock, flags);
267
* Allocate a new soundfont structure.
269
static struct snd_soundfont *
270
newsf(struct snd_sf_list *sflist, int type, char *name)
272
struct snd_soundfont *sf;
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)) {
283
/* not found -- create a new one */
284
sf = kzalloc(sizeof(*sf), GFP_KERNEL);
287
sf->id = sflist->fonts_size;
288
sflist->fonts_size++;
290
/* prepend this record */
291
sf->next = sflist->fonts;
298
memcpy(sf->name, name, SNDRV_SFNT_PATCH_NAME_LEN);
303
/* check if the given name matches to the existing list */
305
is_identical_font(struct snd_soundfont *sf, int type, unsigned char *name)
307
return ((sf->type & SNDRV_SFNT_PAT_SHARED) &&
308
(sf->type & 0x0f) == (type & 0x0f) &&
310
memcmp(sf->name, name, SNDRV_SFNT_PATCH_NAME_LEN) == 0));
314
* Close the current patch.
317
close_patch(struct snd_sf_list *sflist)
321
spin_lock_irqsave(&sflist->lock, flags);
322
sflist->currsf = NULL;
323
sflist->open_client = -1;
324
spin_unlock_irqrestore(&sflist->lock, flags);
326
rebuild_presets(sflist);
332
/* probe sample in the current list -- nothing to be loaded */
334
probe_data(struct snd_sf_list *sflist, int sample_id)
336
/* patch must be opened */
337
if (sflist->currsf) {
338
/* search the specified sample by optarg */
339
if (find_sample(sflist->currsf, sample_id))
346
* increment zone counter
349
set_zone_counter(struct snd_sf_list *sflist, struct snd_soundfont *sf,
350
struct snd_sf_zone *zp)
352
zp->counter = sflist->zone_counter++;
353
if (sf->type & SNDRV_SFNT_PAT_LOCKED)
354
sflist->zone_locked = sflist->zone_counter;
358
* allocate a new zone record
360
static struct snd_sf_zone *
361
sf_zone_new(struct snd_sf_list *sflist, struct snd_soundfont *sf)
363
struct snd_sf_zone *zp;
365
if ((zp = kzalloc(sizeof(*zp), GFP_KERNEL)) == NULL)
367
zp->next = sf->zones;
370
init_voice_info(&zp->v);
372
set_zone_counter(sflist, sf, zp);
378
* increment sample counter
381
set_sample_counter(struct snd_sf_list *sflist, struct snd_soundfont *sf,
382
struct snd_sf_sample *sp)
384
sp->counter = sflist->sample_counter++;
385
if (sf->type & SNDRV_SFNT_PAT_LOCKED)
386
sflist->sample_locked = sflist->sample_counter;
390
* allocate a new sample list record
392
static struct snd_sf_sample *
393
sf_sample_new(struct snd_sf_list *sflist, struct snd_soundfont *sf)
395
struct snd_sf_sample *sp;
397
if ((sp = kzalloc(sizeof(*sp), GFP_KERNEL)) == NULL)
400
sp->next = sf->samples;
403
set_sample_counter(sflist, sf, sp);
408
* delete sample list -- this is an exceptional job.
409
* only the last allocated sample can be deleted.
412
sf_sample_delete(struct snd_sf_list *sflist, struct snd_soundfont *sf,
413
struct snd_sf_sample *sp)
415
/* only last sample is accepted */
416
if (sp == sf->samples) {
417
sf->samples = sp->next;
425
load_map(struct snd_sf_list *sflist, const void __user *data, int count)
427
struct snd_sf_zone *zp, *prevp;
428
struct snd_soundfont *sf;
429
struct soundfont_voice_map map;
431
/* get the link info */
432
if (count < (int)sizeof(map))
434
if (copy_from_user(&map, data, sizeof(map)))
437
if (map.map_instr < 0 || map.map_instr >= SF_MAX_INSTRUMENTS)
440
sf = newsf(sflist, SNDRV_SFNT_PAT_TYPE_MAP|SNDRV_SFNT_PAT_SHARED, NULL);
445
for (zp = sf->zones; zp; prevp = zp, zp = zp->next) {
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 */
456
prevp->next = zp->next;
457
zp->next = sf->zones;
460
/* update the counter */
461
set_zone_counter(sflist, sf, zp);
466
/* create a new zone */
467
if ((zp = sf_zone_new(sflist, sf)) == NULL)
470
zp->bank = map.map_bank;
471
zp->instr = map.map_instr;
473
if (map.map_key >= 0) {
474
zp->v.low = map.map_key;
475
zp->v.high = map.map_key;
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;
482
add_preset(sflist, zp);
488
/* remove the present instrument layers */
490
remove_info(struct snd_sf_list *sflist, struct snd_soundfont *sf,
493
struct snd_sf_zone *prev, *next, *p;
497
for (p = sf->zones; p; p = next) {
500
p->bank == bank && p->instr == instr) {
501
/* remove this layer */
512
rebuild_presets(sflist);
518
* Read an info record from the user buffer and save it on the current
522
load_info(struct snd_sf_list *sflist, const void __user *data, long count)
524
struct snd_soundfont *sf;
525
struct snd_sf_zone *zone;
526
struct soundfont_voice_rec_hdr hdr;
529
/* patch must be opened */
530
if ((sf = sflist->currsf) == NULL)
533
if (is_special_type(sf->type))
536
if (count < (long)sizeof(hdr)) {
537
printk(KERN_ERR "Soundfont error: invalid patch zone length\n");
540
if (copy_from_user((char*)&hdr, data, sizeof(hdr)))
544
count -= sizeof(hdr);
546
if (hdr.nvoices <= 0 || hdr.nvoices >= 100) {
547
printk(KERN_ERR "Soundfont error: Illegal voice number %d\n",
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",
559
switch (hdr.write_mode) {
560
case SNDRV_SFNT_WR_EXCLUSIVE:
561
/* exclusive mode - if the instrument already exists,
563
for (zone = sf->zones; zone; zone = zone->next) {
565
zone->bank == hdr.bank &&
566
zone->instr == hdr.instr)
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);
576
for (i = 0; i < hdr.nvoices; i++) {
577
struct snd_sf_zone tmpzone;
579
/* copy awe_voice_info parameters */
580
if (copy_from_user(&tmpzone.v, data, sizeof(tmpzone.v))) {
584
data += sizeof(tmpzone.v);
585
count -= sizeof(tmpzone.v);
587
tmpzone.bank = hdr.bank;
588
tmpzone.instr = hdr.instr;
590
tmpzone.v.sf_id = sf->id;
591
if (tmpzone.v.mode & SNDRV_SFNT_MODE_INIT_PARM)
592
init_voice_parm(&tmpzone.v.parm);
594
/* create a new zone */
595
if ((zone = sf_zone_new(sflist, sf)) == NULL) {
599
/* copy the temporary data */
600
zone->bank = tmpzone.bank;
601
zone->instr = tmpzone.instr;
604
/* look up the sample */
605
zone->sample = set_sample(sf, &zone->v);
612
/* initialize voice_info record */
614
init_voice_info(struct soundfont_voice_info *avp)
616
memset(avp, 0, sizeof(*avp));
625
avp->amplitude = 127;
626
avp->scaleTuning = 100;
628
init_voice_parm(&avp->parm);
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.
635
* Chorus and Reverb effects are zero.
638
init_voice_parm(struct soundfont_voice_parm *pp)
640
memset(pp, 0, sizeof(*pp));
642
pp->moddelay = 0x8000;
643
pp->modatkhld = 0x7f7f;
644
pp->moddcysus = 0x7f7f;
645
pp->modrelease = 0x807f;
647
pp->voldelay = 0x8000;
648
pp->volatkhld = 0x7f7f;
649
pp->voldcysus = 0x7f7f;
650
pp->volrelease = 0x807f;
652
pp->lfo1delay = 0x8000;
653
pp->lfo2delay = 0x8000;
658
/* search the specified sample */
659
static struct snd_sf_sample *
660
set_sample(struct snd_soundfont *sf, struct soundfont_voice_info *avp)
662
struct snd_sf_sample *sample;
664
sample = find_sample(sf, avp->sample);
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.
673
avp->start += sample->v.start;
674
avp->end += sample->v.end;
675
avp->loopstart += sample->v.loopstart;
676
avp->loopend += sample->v.loopend;
678
/* copy mode flags */
679
avp->sample_mode = sample->v.mode_flags;
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)
688
struct snd_sf_sample *p;
693
for (p = sf->samples; p; p = p->next) {
694
if (p->v.sample == sample_id)
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
708
load_data(struct snd_sf_list *sflist, const void __user *data, long count)
710
struct snd_soundfont *sf;
711
struct soundfont_sample_info sample_info;
712
struct snd_sf_sample *sp;
715
/* patch must be opened */
716
if ((sf = sflist->currsf) == NULL)
719
if (is_special_type(sf->type))
722
if (copy_from_user(&sample_info, data, sizeof(sample_info)))
725
off = sizeof(sample_info);
727
if (sample_info.size != (count-off)/2)
731
if (find_sample(sf, sample_info.sample)) {
732
/* if shared sample, skip this data */
733
if (sf->type & SNDRV_SFNT_PAT_SHARED)
738
/* Allocate a new sample structure */
739
if ((sp = sf_sample_new(sflist, sf)) == NULL)
743
sp->v.sf_id = sf->id;
745
sp->v.truesize = sp->v.size;
748
* If there is wave data then load it.
750
if (sp->v.size > 0) {
752
rc = sflist->callback.sample_new
753
(sflist->callback.private_data, sp, sflist->memhdr,
754
data + off, count - off);
756
sf_sample_delete(sflist, sf, sp);
759
sflist->mem_used += sp->v.truesize;
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,
787
/* convert from linear to log value
789
* conversion: value = log2(amount / base) * ratio
792
* amount = linear value (unsigned, 32bit max)
793
* offset = base offset (:= log2(base) * 0x10000)
794
* ratio = division ratio
798
snd_sf_linear_to_log(unsigned int amount, int offset, int ratio)
805
for (bit = 0; ! (amount & 0x80000000L); bit++)
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;
812
v = (v * ratio) >> 16;
813
v += (24 - bit) * ratio;
817
EXPORT_SYMBOL(snd_sf_linear_to_log);
820
#define OFFSET_MSEC 653117 /* base = 1000 */
821
#define OFFSET_ABSCENT 851781 /* base = 8176 */
822
#define OFFSET_SAMPLERATE 1011119 /* base = 44100 */
824
#define ABSCENT_RATIO 1200
825
#define TIMECENT_RATIO 1200
826
#define SAMPLERATE_RATIO 4096
830
* conversion: abscent = log2(MHz / 8176) * 1200
833
freq_to_note(int mhz)
835
return snd_sf_linear_to_log(mhz, OFFSET_ABSCENT, ABSCENT_RATIO);
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.
843
* conversion: offset = log2(Hz / 44100) * 4096
846
calc_rate_offset(int hz)
848
return snd_sf_linear_to_log(hz, OFFSET_SAMPLERATE, SAMPLERATE_RATIO);
852
/* calculate GUS envelope time */
854
calc_gus_envelope_time(int rate, int start, int end)
857
r = (3 - ((rate >> 6) & 3)) * 3;
865
return (t * 10) / (p * 441);
868
/* convert envelope time parameter to soundfont parameters */
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,
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,
893
/* delay time = 0x8000 - msec/92 */
895
snd_sf_calc_parm_hold(int msec)
897
int val = (0x7f * 92 - msec) / 92;
898
if (val < 1) val = 1;
899
if (val >= 126) val = 126;
903
/* search an index for specified time from given time table */
905
calc_parm_search(int msec, short *table)
907
int left = 1, right = 127, mid;
908
while (left < right) {
909
mid = (left + right) / 2;
910
if (msec < (int)table[mid])
918
/* attack time: search from time table */
920
snd_sf_calc_parm_attack(int msec)
922
return calc_parm_search(msec, attack_time_tbl);
925
/* decay/release time: search from time table */
927
snd_sf_calc_parm_decay(int msec)
929
return calc_parm_search(msec, decay_time_tbl);
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,
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]
949
load_guspatch(struct snd_sf_list *sflist, const char __user *data,
950
long count, int client)
952
struct patch_info patch;
953
struct snd_soundfont *sf;
954
struct snd_sf_zone *zone;
955
struct snd_sf_sample *smp;
959
if (count < (long)sizeof(patch)) {
960
snd_printk(KERN_ERR "patch record too small %ld\n", count);
963
if (copy_from_user(&patch, data, sizeof(patch)))
966
count -= sizeof(patch);
967
data += sizeof(patch);
969
sf = newsf(sflist, SNDRV_SFNT_PAT_TYPE_GUS|SNDRV_SFNT_PAT_SHARED, NULL);
972
if ((smp = sf_sample_new(sflist, sf)) == NULL)
974
sample_id = sflist->sample_counter;
975
smp->v.sample = sample_id;
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;
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;
996
if (patch.mode & WAVE_16_BITS) {
997
/* convert to word offsets */
1000
smp->v.loopstart /= 2;
1001
smp->v.loopend /= 2;
1003
/*smp->v.loopend++;*/
1006
smp->v.truesize = 0;
1007
smp->v.sf_id = sf->id;
1009
/* set up voice info */
1010
if ((zone = sf_zone_new(sflist, sf)) == NULL) {
1011
sf_sample_delete(sflist, sf, smp);
1018
if (sflist->callback.sample_new) {
1019
rc = sflist->callback.sample_new
1020
(sflist->callback.private_data, smp, sflist->memhdr,
1023
sf_sample_delete(sflist, sf, smp);
1026
/* memory offset is updated after */
1029
/* update the memory offset here */
1030
sflist->mem_used += smp->v.truesize;
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;
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);
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]);
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);
1087
if (patch.mode & WAVE_FAST_RELEASE) {
1088
zone->v.parm.volrelease = 0x807f;
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;
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;
1102
/* scale_freq, scale_factor, volume, and fractions not implemented */
1104
if (!(smp->v.mode_flags & SNDRV_SFNT_SAMPLE_SINGLESHOT))
1105
zone->v.mode = SNDRV_SFNT_MODE_LOOPING;
1109
/* append to the tail of the list */
1110
/*zone->bank = ctrls[AWE_MD_GUS_BANK];*/
1112
zone->instr = patch.instr_no;
1114
zone->v.sf_id = sf->id;
1116
zone->sample = set_sample(sf, &zone->v);
1118
/* rebuild preset now */
1119
add_preset(sflist, zone);
1124
/* load GUS patch */
1126
snd_soundfont_load_guspatch(struct snd_sf_list *sflist, const char __user *data,
1127
long count, int client)
1130
lock_preset(sflist);
1131
rc = load_guspatch(sflist, data, count, client);
1132
unlock_preset(sflist);
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).
1145
rebuild_presets(struct snd_sf_list *sflist)
1147
struct snd_soundfont *sf;
1148
struct snd_sf_zone *cur;
1150
/* clear preset table */
1151
memset(sflist->presets, 0, sizeof(sflist->presets));
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)
1163
add_preset(sflist, cur);
1170
* add the given zone to preset table
1173
add_preset(struct snd_sf_list *sflist, struct snd_sf_zone *cur)
1175
struct snd_sf_zone *zone;
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 */
1188
/* remove old zones */
1189
delete_preset(sflist, zone);
1190
zone = NULL; /* do not forget to clear this! */
1193
/* prepend this zone */
1194
if ((index = get_index(cur->bank, cur->instr, cur->v.low)) < 0)
1196
cur->next_zone = zone; /* zone link */
1197
cur->next_instr = sflist->presets[index]; /* preset table link */
1198
sflist->presets[index] = cur;
1202
* delete the given zones from preset_table
1205
delete_preset(struct snd_sf_list *sflist, struct snd_sf_zone *zp)
1208
struct snd_sf_zone *p;
1210
if ((index = get_index(zp->bank, zp->instr, zp->v.low)) < 0)
1212
for (p = sflist->presets[index]; p; p = p->next_instr) {
1213
while (p->next_instr == zp) {
1214
p->next_instr = zp->next_instr;
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.
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)
1237
unsigned long flags;
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
1243
spin_lock_irqsave(&sflist->lock, flags);
1244
if (sflist->presets_locked) {
1245
spin_unlock_irqrestore(&sflist->lock, flags);
1248
nvoices = search_zones(sflist, notep, vel, preset, bank,
1249
table, max_layers, 0);
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);
1256
spin_unlock_irqrestore(&sflist->lock, flags);
1262
* search the first matching zone
1264
static struct snd_sf_zone *
1265
search_first_zone(struct snd_sf_list *sflist, int bank, int preset, int key)
1268
struct snd_sf_zone *zp;
1270
if ((index = get_index(bank, preset, key)) < 0)
1272
for (zp = sflist->presets[index]; zp; zp = zp->next_instr) {
1273
if (zp->instr == preset && zp->bank == bank)
1281
* search matching zones from sflist. can be called recursively.
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)
1288
struct snd_sf_zone *zp;
1291
zp = search_first_zone(sflist, bank, preset, *notep);
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) {
1297
/* search preset mapping (aliasing) */
1298
int key = zp->v.fixkey;
1299
preset = zp->v.start;
1302
if (level > 5) /* too deep alias level */
1306
nvoices = search_zones(sflist, &key, vel,
1307
preset, bank, table,
1308
max_layers, level + 1);
1313
table[nvoices++] = zp;
1314
if (nvoices >= max_layers)
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.
1329
get_index(int bank, int instr, int key)
1332
if (SF_IS_DRUM_BANK(bank))
1333
index = key + SF_MAX_INSTRUMENTS;
1336
index = index % SF_MAX_PRESETS;
1343
* Initialise the sflist structure.
1346
snd_sf_init(struct snd_sf_list *sflist)
1348
memset(sflist->presets, 0, sizeof(sflist->presets));
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;
1362
* Release all list records
1365
snd_sf_clear(struct snd_sf_list *sflist)
1367
struct snd_soundfont *sf, *nextsf;
1368
struct snd_sf_zone *zp, *nextzp;
1369
struct snd_sf_sample *sp, *nextsp;
1371
for (sf = sflist->fonts; sf; sf = nextsf) {
1373
for (zp = sf->zones; zp; zp = nextzp) {
1377
for (sp = sf->samples; sp; sp = nextsp) {
1379
if (sflist->callback.sample_free)
1380
sflist->callback.sample_free(sflist->callback.private_data,
1381
sp, sflist->memhdr);
1387
snd_sf_init(sflist);
1392
* Create a new sflist structure
1394
struct snd_sf_list *
1395
snd_sf_new(struct snd_sf_callback *callback, struct snd_util_memhdr *hdr)
1397
struct snd_sf_list *sflist;
1399
if ((sflist = kzalloc(sizeof(*sflist), GFP_KERNEL)) == NULL)
1402
mutex_init(&sflist->presets_mutex);
1403
spin_lock_init(&sflist->lock);
1404
sflist->memhdr = hdr;
1407
sflist->callback = *callback;
1409
snd_sf_init(sflist);
1415
* Free everything allocated off the sflist structure.
1418
snd_sf_free(struct snd_sf_list *sflist)
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);
1433
* Remove all samples
1434
* The soundcard should be silet before calling this function.
1437
snd_soundfont_remove_samples(struct snd_sf_list *sflist)
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);
1449
* Remove unlocked samples.
1450
* The soundcard should be silent before calling this function.
1453
snd_soundfont_remove_unlocked(struct snd_sf_list *sflist)
1455
struct snd_soundfont *sf;
1456
struct snd_sf_zone *zp, *nextzp;
1457
struct snd_sf_sample *sp, *nextsp;
1459
lock_preset(sflist);
1461
if (sflist->callback.sample_reset)
1462
sflist->callback.sample_reset(sflist->callback.private_data);
1465
memset(sflist->presets, 0, sizeof(sflist->presets));
1467
for (sf = sflist->fonts; sf; sf = sf->next) {
1468
for (zp = sf->zones; zp; zp = nextzp) {
1469
if (zp->counter < sflist->zone_locked)
1476
for (sp = sf->samples; sp; sp = nextsp) {
1477
if (sp->counter < sflist->sample_locked)
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);
1489
sflist->zone_counter = sflist->zone_locked;
1490
sflist->sample_counter = sflist->sample_locked;
1492
rebuild_presets(sflist);
1494
unlock_preset(sflist);