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