Commit | Line | Data |
---|---|---|
1da177e4 LT |
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 | */ | |
976412fb | 28 | #include <linux/uaccess.h> |
1da177e4 | 29 | #include <linux/slab.h> |
d81a6d71 | 30 | #include <linux/export.h> |
1da177e4 LT |
31 | #include <sound/core.h> |
32 | #include <sound/soundfont.h> | |
33 | #include <sound/seq_oss_legacy.h> | |
34 | ||
35 | /* Prototypes for static functions */ | |
36 | ||
03da312a TI |
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); | |
1da177e4 | 71 | static int get_index(int bank, int instr, int key); |
03da312a TI |
72 | static void snd_sf_init(struct snd_sf_list *sflist); |
73 | static void snd_sf_clear(struct snd_sf_list *sflist); | |
1da177e4 LT |
74 | |
75 | /* | |
76 | * lock access to sflist | |
77 | */ | |
78 | static void | |
03da312a | 79 | lock_preset(struct snd_sf_list *sflist) |
1da177e4 LT |
80 | { |
81 | unsigned long flags; | |
ef9f0a42 | 82 | mutex_lock(&sflist->presets_mutex); |
1da177e4 LT |
83 | spin_lock_irqsave(&sflist->lock, flags); |
84 | sflist->presets_locked = 1; | |
85 | spin_unlock_irqrestore(&sflist->lock, flags); | |
86 | } | |
87 | ||
88 | ||
89 | /* | |
90 | * remove lock | |
91 | */ | |
92 | static void | |
03da312a | 93 | unlock_preset(struct snd_sf_list *sflist) |
1da177e4 LT |
94 | { |
95 | unsigned long flags; | |
96 | spin_lock_irqsave(&sflist->lock, flags); | |
97 | sflist->presets_locked = 0; | |
98 | spin_unlock_irqrestore(&sflist->lock, flags); | |
ef9f0a42 | 99 | mutex_unlock(&sflist->presets_mutex); |
1da177e4 LT |
100 | } |
101 | ||
102 | ||
103 | /* | |
104 | * close the patch if the patch was opened by this client. | |
105 | */ | |
106 | int | |
03da312a | 107 | snd_soundfont_close_check(struct snd_sf_list *sflist, int client) |
1da177e4 LT |
108 | { |
109 | unsigned long flags; | |
110 | spin_lock_irqsave(&sflist->lock, flags); | |
111 | if (sflist->open_client == client) { | |
112 | spin_unlock_irqrestore(&sflist->lock, flags); | |
113 | return close_patch(sflist); | |
114 | } | |
115 | spin_unlock_irqrestore(&sflist->lock, flags); | |
116 | return 0; | |
117 | } | |
118 | ||
119 | ||
120 | /* | |
121 | * Deal with a soundfont patch. Any driver could use these routines | |
122 | * although it was designed for the AWE64. | |
123 | * | |
124 | * The sample_write and callargs pararameters allow a callback into | |
125 | * the actual driver to write sample data to the board or whatever | |
126 | * it wants to do with it. | |
127 | */ | |
128 | int | |
03da312a TI |
129 | snd_soundfont_load(struct snd_sf_list *sflist, const void __user *data, |
130 | long count, int client) | |
1da177e4 | 131 | { |
03da312a | 132 | struct soundfont_patch_info patch; |
1da177e4 LT |
133 | unsigned long flags; |
134 | int rc; | |
135 | ||
136 | if (count < (long)sizeof(patch)) { | |
42b0158b | 137 | snd_printk(KERN_ERR "patch record too small %ld\n", count); |
1da177e4 LT |
138 | return -EINVAL; |
139 | } | |
140 | if (copy_from_user(&patch, data, sizeof(patch))) | |
141 | return -EFAULT; | |
142 | ||
143 | count -= sizeof(patch); | |
144 | data += sizeof(patch); | |
145 | ||
146 | if (patch.key != SNDRV_OSS_SOUNDFONT_PATCH) { | |
42b0158b | 147 | snd_printk(KERN_ERR "The wrong kind of patch %x\n", patch.key); |
1da177e4 LT |
148 | return -EINVAL; |
149 | } | |
150 | if (count < patch.len) { | |
42b0158b TI |
151 | snd_printk(KERN_ERR "Patch too short %ld, need %d\n", |
152 | count, patch.len); | |
1da177e4 LT |
153 | return -EINVAL; |
154 | } | |
155 | if (patch.len < 0) { | |
42b0158b | 156 | snd_printk(KERN_ERR "poor length %d\n", patch.len); |
1da177e4 LT |
157 | return -EINVAL; |
158 | } | |
159 | ||
160 | if (patch.type == SNDRV_SFNT_OPEN_PATCH) { | |
161 | /* grab sflist to open */ | |
162 | lock_preset(sflist); | |
163 | rc = open_patch(sflist, data, count, client); | |
164 | unlock_preset(sflist); | |
165 | return rc; | |
166 | } | |
167 | ||
168 | /* check if other client already opened patch */ | |
169 | spin_lock_irqsave(&sflist->lock, flags); | |
170 | if (sflist->open_client != client) { | |
171 | spin_unlock_irqrestore(&sflist->lock, flags); | |
172 | return -EBUSY; | |
173 | } | |
174 | spin_unlock_irqrestore(&sflist->lock, flags); | |
175 | ||
176 | lock_preset(sflist); | |
177 | rc = -EINVAL; | |
178 | switch (patch.type) { | |
179 | case SNDRV_SFNT_LOAD_INFO: | |
180 | rc = load_info(sflist, data, count); | |
181 | break; | |
182 | case SNDRV_SFNT_LOAD_DATA: | |
183 | rc = load_data(sflist, data, count); | |
184 | break; | |
185 | case SNDRV_SFNT_CLOSE_PATCH: | |
186 | rc = close_patch(sflist); | |
187 | break; | |
188 | case SNDRV_SFNT_REPLACE_DATA: | |
189 | /*rc = replace_data(&patch, data, count);*/ | |
190 | break; | |
191 | case SNDRV_SFNT_MAP_PRESET: | |
192 | rc = load_map(sflist, data, count); | |
193 | break; | |
194 | case SNDRV_SFNT_PROBE_DATA: | |
195 | rc = probe_data(sflist, patch.optarg); | |
196 | break; | |
197 | case SNDRV_SFNT_REMOVE_INFO: | |
198 | /* patch must be opened */ | |
d20cad60 | 199 | if (!sflist->currsf) { |
42b0158b TI |
200 | snd_printk(KERN_ERR "soundfont: remove_info: " |
201 | "patch not opened\n"); | |
1da177e4 LT |
202 | rc = -EINVAL; |
203 | } else { | |
204 | int bank, instr; | |
205 | bank = ((unsigned short)patch.optarg >> 8) & 0xff; | |
206 | instr = (unsigned short)patch.optarg & 0xff; | |
207 | if (! remove_info(sflist, sflist->currsf, bank, instr)) | |
208 | rc = -EINVAL; | |
209 | else | |
210 | rc = 0; | |
211 | } | |
212 | break; | |
213 | } | |
214 | unlock_preset(sflist); | |
215 | ||
216 | return rc; | |
217 | } | |
218 | ||
219 | ||
220 | /* check if specified type is special font (GUS or preset-alias) */ | |
221 | static inline int | |
222 | is_special_type(int type) | |
223 | { | |
224 | type &= 0x0f; | |
225 | return (type == SNDRV_SFNT_PAT_TYPE_GUS || | |
226 | type == SNDRV_SFNT_PAT_TYPE_MAP); | |
227 | } | |
228 | ||
229 | ||
230 | /* open patch; create sf list */ | |
231 | static int | |
03da312a TI |
232 | open_patch(struct snd_sf_list *sflist, const char __user *data, |
233 | int count, int client) | |
1da177e4 | 234 | { |
03da312a TI |
235 | struct soundfont_open_parm parm; |
236 | struct snd_soundfont *sf; | |
1da177e4 LT |
237 | unsigned long flags; |
238 | ||
239 | spin_lock_irqsave(&sflist->lock, flags); | |
240 | if (sflist->open_client >= 0 || sflist->currsf) { | |
241 | spin_unlock_irqrestore(&sflist->lock, flags); | |
242 | return -EBUSY; | |
243 | } | |
244 | spin_unlock_irqrestore(&sflist->lock, flags); | |
245 | ||
246 | if (copy_from_user(&parm, data, sizeof(parm))) | |
247 | return -EFAULT; | |
248 | ||
249 | if (is_special_type(parm.type)) { | |
250 | parm.type |= SNDRV_SFNT_PAT_SHARED; | |
251 | sf = newsf(sflist, parm.type, NULL); | |
252 | } else | |
253 | sf = newsf(sflist, parm.type, parm.name); | |
254 | if (sf == NULL) { | |
255 | return -ENOMEM; | |
256 | } | |
257 | ||
258 | spin_lock_irqsave(&sflist->lock, flags); | |
259 | sflist->open_client = client; | |
260 | sflist->currsf = sf; | |
261 | spin_unlock_irqrestore(&sflist->lock, flags); | |
262 | ||
263 | return 0; | |
264 | } | |
265 | ||
266 | /* | |
267 | * Allocate a new soundfont structure. | |
268 | */ | |
03da312a TI |
269 | static struct snd_soundfont * |
270 | newsf(struct snd_sf_list *sflist, int type, char *name) | |
1da177e4 | 271 | { |
03da312a | 272 | struct snd_soundfont *sf; |
1da177e4 LT |
273 | |
274 | /* check the shared fonts */ | |
275 | if (type & SNDRV_SFNT_PAT_SHARED) { | |
276 | for (sf = sflist->fonts; sf; sf = sf->next) { | |
277 | if (is_identical_font(sf, type, name)) { | |
278 | return sf; | |
279 | } | |
280 | } | |
281 | } | |
282 | ||
283 | /* not found -- create a new one */ | |
561b220a | 284 | sf = kzalloc(sizeof(*sf), GFP_KERNEL); |
1da177e4 LT |
285 | if (sf == NULL) |
286 | return NULL; | |
287 | sf->id = sflist->fonts_size; | |
288 | sflist->fonts_size++; | |
289 | ||
290 | /* prepend this record */ | |
291 | sf->next = sflist->fonts; | |
292 | sflist->fonts = sf; | |
293 | ||
294 | sf->type = type; | |
295 | sf->zones = NULL; | |
296 | sf->samples = NULL; | |
297 | if (name) | |
298 | memcpy(sf->name, name, SNDRV_SFNT_PATCH_NAME_LEN); | |
299 | ||
300 | return sf; | |
301 | } | |
302 | ||
303 | /* check if the given name matches to the existing list */ | |
304 | static int | |
03da312a | 305 | is_identical_font(struct snd_soundfont *sf, int type, unsigned char *name) |
1da177e4 LT |
306 | { |
307 | return ((sf->type & SNDRV_SFNT_PAT_SHARED) && | |
308 | (sf->type & 0x0f) == (type & 0x0f) && | |
309 | (name == NULL || | |
310 | memcmp(sf->name, name, SNDRV_SFNT_PATCH_NAME_LEN) == 0)); | |
311 | } | |
312 | ||
313 | /* | |
314 | * Close the current patch. | |
315 | */ | |
316 | static int | |
03da312a | 317 | close_patch(struct snd_sf_list *sflist) |
1da177e4 LT |
318 | { |
319 | unsigned long flags; | |
320 | ||
321 | spin_lock_irqsave(&sflist->lock, flags); | |
322 | sflist->currsf = NULL; | |
323 | sflist->open_client = -1; | |
324 | spin_unlock_irqrestore(&sflist->lock, flags); | |
325 | ||
326 | rebuild_presets(sflist); | |
327 | ||
328 | return 0; | |
329 | ||
330 | } | |
331 | ||
332 | /* probe sample in the current list -- nothing to be loaded */ | |
333 | static int | |
03da312a | 334 | probe_data(struct snd_sf_list *sflist, int sample_id) |
1da177e4 LT |
335 | { |
336 | /* patch must be opened */ | |
337 | if (sflist->currsf) { | |
338 | /* search the specified sample by optarg */ | |
339 | if (find_sample(sflist->currsf, sample_id)) | |
340 | return 0; | |
341 | } | |
342 | return -EINVAL; | |
343 | } | |
344 | ||
345 | /* | |
346 | * increment zone counter | |
347 | */ | |
348 | static void | |
03da312a TI |
349 | set_zone_counter(struct snd_sf_list *sflist, struct snd_soundfont *sf, |
350 | struct snd_sf_zone *zp) | |
1da177e4 LT |
351 | { |
352 | zp->counter = sflist->zone_counter++; | |
353 | if (sf->type & SNDRV_SFNT_PAT_LOCKED) | |
354 | sflist->zone_locked = sflist->zone_counter; | |
355 | } | |
356 | ||
357 | /* | |
358 | * allocate a new zone record | |
359 | */ | |
03da312a TI |
360 | static struct snd_sf_zone * |
361 | sf_zone_new(struct snd_sf_list *sflist, struct snd_soundfont *sf) | |
1da177e4 | 362 | { |
03da312a | 363 | struct snd_sf_zone *zp; |
1da177e4 | 364 | |
561b220a | 365 | if ((zp = kzalloc(sizeof(*zp), GFP_KERNEL)) == NULL) |
1da177e4 LT |
366 | return NULL; |
367 | zp->next = sf->zones; | |
368 | sf->zones = zp; | |
369 | ||
370 | init_voice_info(&zp->v); | |
371 | ||
372 | set_zone_counter(sflist, sf, zp); | |
373 | return zp; | |
374 | } | |
375 | ||
376 | ||
377 | /* | |
fbfecd37 | 378 | * increment sample counter |
1da177e4 LT |
379 | */ |
380 | static void | |
03da312a TI |
381 | set_sample_counter(struct snd_sf_list *sflist, struct snd_soundfont *sf, |
382 | struct snd_sf_sample *sp) | |
1da177e4 LT |
383 | { |
384 | sp->counter = sflist->sample_counter++; | |
385 | if (sf->type & SNDRV_SFNT_PAT_LOCKED) | |
386 | sflist->sample_locked = sflist->sample_counter; | |
387 | } | |
388 | ||
389 | /* | |
390 | * allocate a new sample list record | |
391 | */ | |
03da312a TI |
392 | static struct snd_sf_sample * |
393 | sf_sample_new(struct snd_sf_list *sflist, struct snd_soundfont *sf) | |
1da177e4 | 394 | { |
03da312a | 395 | struct snd_sf_sample *sp; |
1da177e4 | 396 | |
561b220a | 397 | if ((sp = kzalloc(sizeof(*sp), GFP_KERNEL)) == NULL) |
1da177e4 LT |
398 | return NULL; |
399 | ||
400 | sp->next = sf->samples; | |
401 | sf->samples = sp; | |
402 | ||
403 | set_sample_counter(sflist, sf, sp); | |
404 | return sp; | |
405 | } | |
406 | ||
407 | /* | |
408 | * delete sample list -- this is an exceptional job. | |
409 | * only the last allocated sample can be deleted. | |
410 | */ | |
411 | static void | |
03da312a TI |
412 | sf_sample_delete(struct snd_sf_list *sflist, struct snd_soundfont *sf, |
413 | struct snd_sf_sample *sp) | |
1da177e4 LT |
414 | { |
415 | /* only last sample is accepted */ | |
416 | if (sp == sf->samples) { | |
417 | sf->samples = sp->next; | |
418 | kfree(sp); | |
419 | } | |
420 | } | |
421 | ||
422 | ||
423 | /* load voice map */ | |
424 | static int | |
03da312a | 425 | load_map(struct snd_sf_list *sflist, const void __user *data, int count) |
1da177e4 | 426 | { |
03da312a TI |
427 | struct snd_sf_zone *zp, *prevp; |
428 | struct snd_soundfont *sf; | |
429 | struct soundfont_voice_map map; | |
1da177e4 LT |
430 | |
431 | /* get the link info */ | |
432 | if (count < (int)sizeof(map)) | |
433 | return -EINVAL; | |
434 | if (copy_from_user(&map, data, sizeof(map))) | |
435 | return -EFAULT; | |
436 | ||
437 | if (map.map_instr < 0 || map.map_instr >= SF_MAX_INSTRUMENTS) | |
438 | return -EINVAL; | |
439 | ||
440 | sf = newsf(sflist, SNDRV_SFNT_PAT_TYPE_MAP|SNDRV_SFNT_PAT_SHARED, NULL); | |
441 | if (sf == NULL) | |
442 | return -ENOMEM; | |
443 | ||
444 | prevp = NULL; | |
445 | for (zp = sf->zones; zp; prevp = zp, zp = zp->next) { | |
446 | if (zp->mapped && | |
447 | zp->instr == map.map_instr && | |
448 | zp->bank == map.map_bank && | |
449 | zp->v.low == map.map_key && | |
450 | zp->v.start == map.src_instr && | |
451 | zp->v.end == map.src_bank && | |
452 | zp->v.fixkey == map.src_key) { | |
453 | /* the same mapping is already present */ | |
454 | /* relink this record to the link head */ | |
455 | if (prevp) { | |
456 | prevp->next = zp->next; | |
457 | zp->next = sf->zones; | |
458 | sf->zones = zp; | |
459 | } | |
460 | /* update the counter */ | |
461 | set_zone_counter(sflist, sf, zp); | |
462 | return 0; | |
463 | } | |
464 | } | |
465 | ||
466 | /* create a new zone */ | |
467 | if ((zp = sf_zone_new(sflist, sf)) == NULL) | |
468 | return -ENOMEM; | |
469 | ||
470 | zp->bank = map.map_bank; | |
471 | zp->instr = map.map_instr; | |
472 | zp->mapped = 1; | |
473 | if (map.map_key >= 0) { | |
474 | zp->v.low = map.map_key; | |
475 | zp->v.high = map.map_key; | |
476 | } | |
477 | zp->v.start = map.src_instr; | |
478 | zp->v.end = map.src_bank; | |
479 | zp->v.fixkey = map.src_key; | |
480 | zp->v.sf_id = sf->id; | |
481 | ||
482 | add_preset(sflist, zp); | |
483 | ||
484 | return 0; | |
485 | } | |
486 | ||
487 | ||
488 | /* remove the present instrument layers */ | |
489 | static int | |
03da312a TI |
490 | remove_info(struct snd_sf_list *sflist, struct snd_soundfont *sf, |
491 | int bank, int instr) | |
1da177e4 | 492 | { |
03da312a | 493 | struct snd_sf_zone *prev, *next, *p; |
1da177e4 LT |
494 | int removed = 0; |
495 | ||
496 | prev = NULL; | |
497 | for (p = sf->zones; p; p = next) { | |
498 | next = p->next; | |
499 | if (! p->mapped && | |
500 | p->bank == bank && p->instr == instr) { | |
501 | /* remove this layer */ | |
502 | if (prev) | |
503 | prev->next = next; | |
504 | else | |
505 | sf->zones = next; | |
506 | removed++; | |
507 | kfree(p); | |
508 | } else | |
509 | prev = p; | |
510 | } | |
511 | if (removed) | |
512 | rebuild_presets(sflist); | |
513 | return removed; | |
514 | } | |
515 | ||
516 | ||
517 | /* | |
518 | * Read an info record from the user buffer and save it on the current | |
519 | * open soundfont. | |
520 | */ | |
521 | static int | |
03da312a | 522 | load_info(struct snd_sf_list *sflist, const void __user *data, long count) |
1da177e4 | 523 | { |
03da312a TI |
524 | struct snd_soundfont *sf; |
525 | struct snd_sf_zone *zone; | |
526 | struct soundfont_voice_rec_hdr hdr; | |
1da177e4 LT |
527 | int i; |
528 | ||
529 | /* patch must be opened */ | |
530 | if ((sf = sflist->currsf) == NULL) | |
531 | return -EINVAL; | |
532 | ||
533 | if (is_special_type(sf->type)) | |
534 | return -EINVAL; | |
535 | ||
536 | if (count < (long)sizeof(hdr)) { | |
42b0158b | 537 | printk(KERN_ERR "Soundfont error: invalid patch zone length\n"); |
1da177e4 LT |
538 | return -EINVAL; |
539 | } | |
540 | if (copy_from_user((char*)&hdr, data, sizeof(hdr))) | |
541 | return -EFAULT; | |
542 | ||
543 | data += sizeof(hdr); | |
544 | count -= sizeof(hdr); | |
545 | ||
546 | if (hdr.nvoices <= 0 || hdr.nvoices >= 100) { | |
42b0158b TI |
547 | printk(KERN_ERR "Soundfont error: Illegal voice number %d\n", |
548 | hdr.nvoices); | |
1da177e4 LT |
549 | return -EINVAL; |
550 | } | |
551 | ||
03da312a | 552 | if (count < (long)sizeof(struct soundfont_voice_info) * hdr.nvoices) { |
42b0158b TI |
553 | printk(KERN_ERR "Soundfont Error: " |
554 | "patch length(%ld) is smaller than nvoices(%d)\n", | |
1da177e4 LT |
555 | count, hdr.nvoices); |
556 | return -EINVAL; | |
557 | } | |
558 | ||
559 | switch (hdr.write_mode) { | |
560 | case SNDRV_SFNT_WR_EXCLUSIVE: | |
561 | /* exclusive mode - if the instrument already exists, | |
562 | return error */ | |
563 | for (zone = sf->zones; zone; zone = zone->next) { | |
564 | if (!zone->mapped && | |
565 | zone->bank == hdr.bank && | |
566 | zone->instr == hdr.instr) | |
567 | return -EINVAL; | |
568 | } | |
569 | break; | |
570 | case SNDRV_SFNT_WR_REPLACE: | |
571 | /* replace mode - remove the instrument if it already exists */ | |
572 | remove_info(sflist, sf, hdr.bank, hdr.instr); | |
573 | break; | |
574 | } | |
575 | ||
576 | for (i = 0; i < hdr.nvoices; i++) { | |
03da312a | 577 | struct snd_sf_zone tmpzone; |
1da177e4 LT |
578 | |
579 | /* copy awe_voice_info parameters */ | |
580 | if (copy_from_user(&tmpzone.v, data, sizeof(tmpzone.v))) { | |
581 | return -EFAULT; | |
582 | } | |
583 | ||
584 | data += sizeof(tmpzone.v); | |
585 | count -= sizeof(tmpzone.v); | |
586 | ||
587 | tmpzone.bank = hdr.bank; | |
588 | tmpzone.instr = hdr.instr; | |
589 | tmpzone.mapped = 0; | |
590 | tmpzone.v.sf_id = sf->id; | |
591 | if (tmpzone.v.mode & SNDRV_SFNT_MODE_INIT_PARM) | |
592 | init_voice_parm(&tmpzone.v.parm); | |
593 | ||
594 | /* create a new zone */ | |
595 | if ((zone = sf_zone_new(sflist, sf)) == NULL) { | |
596 | return -ENOMEM; | |
597 | } | |
598 | ||
599 | /* copy the temporary data */ | |
600 | zone->bank = tmpzone.bank; | |
601 | zone->instr = tmpzone.instr; | |
602 | zone->v = tmpzone.v; | |
603 | ||
604 | /* look up the sample */ | |
605 | zone->sample = set_sample(sf, &zone->v); | |
606 | } | |
607 | ||
608 | return 0; | |
609 | } | |
610 | ||
611 | ||
612 | /* initialize voice_info record */ | |
613 | static void | |
03da312a | 614 | init_voice_info(struct soundfont_voice_info *avp) |
1da177e4 LT |
615 | { |
616 | memset(avp, 0, sizeof(*avp)); | |
617 | ||
618 | avp->root = 60; | |
619 | avp->high = 127; | |
620 | avp->velhigh = 127; | |
621 | avp->fixkey = -1; | |
622 | avp->fixvel = -1; | |
623 | avp->fixpan = -1; | |
624 | avp->pan = -1; | |
625 | avp->amplitude = 127; | |
626 | avp->scaleTuning = 100; | |
627 | ||
628 | init_voice_parm(&avp->parm); | |
629 | } | |
630 | ||
631 | /* initialize voice_parm record: | |
632 | * Env1/2: delay=0, attack=0, hold=0, sustain=0, decay=0, release=0. | |
633 | * Vibrato and Tremolo effects are zero. | |
634 | * Cutoff is maximum. | |
635 | * Chorus and Reverb effects are zero. | |
636 | */ | |
637 | static void | |
03da312a | 638 | init_voice_parm(struct soundfont_voice_parm *pp) |
1da177e4 LT |
639 | { |
640 | memset(pp, 0, sizeof(*pp)); | |
641 | ||
642 | pp->moddelay = 0x8000; | |
643 | pp->modatkhld = 0x7f7f; | |
644 | pp->moddcysus = 0x7f7f; | |
645 | pp->modrelease = 0x807f; | |
646 | ||
647 | pp->voldelay = 0x8000; | |
648 | pp->volatkhld = 0x7f7f; | |
649 | pp->voldcysus = 0x7f7f; | |
650 | pp->volrelease = 0x807f; | |
651 | ||
652 | pp->lfo1delay = 0x8000; | |
653 | pp->lfo2delay = 0x8000; | |
654 | ||
655 | pp->cutoff = 0xff; | |
656 | } | |
657 | ||
658 | /* search the specified sample */ | |
03da312a TI |
659 | static struct snd_sf_sample * |
660 | set_sample(struct snd_soundfont *sf, struct soundfont_voice_info *avp) | |
1da177e4 | 661 | { |
03da312a | 662 | struct snd_sf_sample *sample; |
1da177e4 LT |
663 | |
664 | sample = find_sample(sf, avp->sample); | |
665 | if (sample == NULL) | |
666 | return NULL; | |
667 | ||
668 | /* add in the actual sample offsets: | |
669 | * The voice_info addresses define only the relative offset | |
670 | * from sample pointers. Here we calculate the actual DRAM | |
671 | * offset from sample pointers. | |
672 | */ | |
673 | avp->start += sample->v.start; | |
674 | avp->end += sample->v.end; | |
675 | avp->loopstart += sample->v.loopstart; | |
676 | avp->loopend += sample->v.loopend; | |
677 | ||
678 | /* copy mode flags */ | |
679 | avp->sample_mode = sample->v.mode_flags; | |
680 | ||
681 | return sample; | |
682 | } | |
683 | ||
684 | /* find the sample pointer with the given id in the soundfont */ | |
03da312a TI |
685 | static struct snd_sf_sample * |
686 | find_sample(struct snd_soundfont *sf, int sample_id) | |
1da177e4 | 687 | { |
03da312a | 688 | struct snd_sf_sample *p; |
1da177e4 LT |
689 | |
690 | if (sf == NULL) | |
691 | return NULL; | |
692 | ||
693 | for (p = sf->samples; p; p = p->next) { | |
694 | if (p->v.sample == sample_id) | |
695 | return p; | |
696 | } | |
697 | return NULL; | |
698 | } | |
699 | ||
700 | ||
701 | /* | |
702 | * Load sample information, this can include data to be loaded onto | |
703 | * the soundcard. It can also just be a pointer into soundcard ROM. | |
704 | * If there is data it will be written to the soundcard via the callback | |
705 | * routine. | |
706 | */ | |
707 | static int | |
03da312a | 708 | load_data(struct snd_sf_list *sflist, const void __user *data, long count) |
1da177e4 | 709 | { |
03da312a TI |
710 | struct snd_soundfont *sf; |
711 | struct soundfont_sample_info sample_info; | |
712 | struct snd_sf_sample *sp; | |
1da177e4 LT |
713 | long off; |
714 | ||
715 | /* patch must be opened */ | |
716 | if ((sf = sflist->currsf) == NULL) | |
717 | return -EINVAL; | |
718 | ||
719 | if (is_special_type(sf->type)) | |
720 | return -EINVAL; | |
721 | ||
722 | if (copy_from_user(&sample_info, data, sizeof(sample_info))) | |
723 | return -EFAULT; | |
724 | ||
725 | off = sizeof(sample_info); | |
726 | ||
727 | if (sample_info.size != (count-off)/2) | |
728 | return -EINVAL; | |
729 | ||
730 | /* Check for dup */ | |
731 | if (find_sample(sf, sample_info.sample)) { | |
732 | /* if shared sample, skip this data */ | |
733 | if (sf->type & SNDRV_SFNT_PAT_SHARED) | |
734 | return 0; | |
735 | return -EINVAL; | |
736 | } | |
737 | ||
738 | /* Allocate a new sample structure */ | |
739 | if ((sp = sf_sample_new(sflist, sf)) == NULL) | |
740 | return -ENOMEM; | |
741 | ||
742 | sp->v = sample_info; | |
743 | sp->v.sf_id = sf->id; | |
744 | sp->v.dummy = 0; | |
745 | sp->v.truesize = sp->v.size; | |
746 | ||
747 | /* | |
748 | * If there is wave data then load it. | |
749 | */ | |
750 | if (sp->v.size > 0) { | |
751 | int rc; | |
752 | rc = sflist->callback.sample_new | |
753 | (sflist->callback.private_data, sp, sflist->memhdr, | |
754 | data + off, count - off); | |
755 | if (rc < 0) { | |
756 | sf_sample_delete(sflist, sf, sp); | |
757 | return rc; | |
758 | } | |
759 | sflist->mem_used += sp->v.truesize; | |
760 | } | |
761 | ||
762 | return count; | |
763 | } | |
764 | ||
765 | ||
766 | /* log2_tbl[i] = log2(i+128) * 0x10000 */ | |
767 | static int log_tbl[129] = { | |
768 | 0x70000, 0x702df, 0x705b9, 0x7088e, 0x70b5d, 0x70e26, 0x710eb, 0x713aa, | |
769 | 0x71663, 0x71918, 0x71bc8, 0x71e72, 0x72118, 0x723b9, 0x72655, 0x728ed, | |
770 | 0x72b80, 0x72e0e, 0x73098, 0x7331d, 0x7359e, 0x7381b, 0x73a93, 0x73d08, | |
771 | 0x73f78, 0x741e4, 0x7444c, 0x746b0, 0x74910, 0x74b6c, 0x74dc4, 0x75019, | |
772 | 0x75269, 0x754b6, 0x75700, 0x75946, 0x75b88, 0x75dc7, 0x76002, 0x7623a, | |
773 | 0x7646e, 0x766a0, 0x768cd, 0x76af8, 0x76d1f, 0x76f43, 0x77164, 0x77382, | |
774 | 0x7759d, 0x777b4, 0x779c9, 0x77bdb, 0x77dea, 0x77ff5, 0x781fe, 0x78404, | |
775 | 0x78608, 0x78808, 0x78a06, 0x78c01, 0x78df9, 0x78fef, 0x791e2, 0x793d2, | |
776 | 0x795c0, 0x797ab, 0x79993, 0x79b79, 0x79d5d, 0x79f3e, 0x7a11d, 0x7a2f9, | |
777 | 0x7a4d3, 0x7a6ab, 0x7a880, 0x7aa53, 0x7ac24, 0x7adf2, 0x7afbe, 0x7b188, | |
778 | 0x7b350, 0x7b515, 0x7b6d8, 0x7b899, 0x7ba58, 0x7bc15, 0x7bdd0, 0x7bf89, | |
779 | 0x7c140, 0x7c2f5, 0x7c4a7, 0x7c658, 0x7c807, 0x7c9b3, 0x7cb5e, 0x7cd07, | |
780 | 0x7ceae, 0x7d053, 0x7d1f7, 0x7d398, 0x7d538, 0x7d6d6, 0x7d872, 0x7da0c, | |
781 | 0x7dba4, 0x7dd3b, 0x7ded0, 0x7e063, 0x7e1f4, 0x7e384, 0x7e512, 0x7e69f, | |
782 | 0x7e829, 0x7e9b3, 0x7eb3a, 0x7ecc0, 0x7ee44, 0x7efc7, 0x7f148, 0x7f2c8, | |
783 | 0x7f446, 0x7f5c2, 0x7f73d, 0x7f8b7, 0x7fa2f, 0x7fba5, 0x7fd1a, 0x7fe8d, | |
784 | 0x80000, | |
785 | }; | |
786 | ||
787 | /* convert from linear to log value | |
788 | * | |
789 | * conversion: value = log2(amount / base) * ratio | |
790 | * | |
791 | * argument: | |
792 | * amount = linear value (unsigned, 32bit max) | |
793 | * offset = base offset (:= log2(base) * 0x10000) | |
794 | * ratio = division ratio | |
795 | * | |
796 | */ | |
797 | int | |
798 | snd_sf_linear_to_log(unsigned int amount, int offset, int ratio) | |
799 | { | |
800 | int v; | |
801 | int s, low, bit; | |
802 | ||
803 | if (amount < 2) | |
804 | return 0; | |
805 | for (bit = 0; ! (amount & 0x80000000L); bit++) | |
806 | amount <<= 1; | |
807 | s = (amount >> 24) & 0x7f; | |
808 | low = (amount >> 16) & 0xff; | |
809 | /* linear approxmimation by lower 8 bit */ | |
810 | v = (log_tbl[s + 1] * low + log_tbl[s] * (0x100 - low)) >> 8; | |
811 | v -= offset; | |
812 | v = (v * ratio) >> 16; | |
813 | v += (24 - bit) * ratio; | |
814 | return v; | |
815 | } | |
816 | ||
95ff1756 TI |
817 | EXPORT_SYMBOL(snd_sf_linear_to_log); |
818 | ||
819 | ||
1da177e4 LT |
820 | #define OFFSET_MSEC 653117 /* base = 1000 */ |
821 | #define OFFSET_ABSCENT 851781 /* base = 8176 */ | |
822 | #define OFFSET_SAMPLERATE 1011119 /* base = 44100 */ | |
823 | ||
824 | #define ABSCENT_RATIO 1200 | |
825 | #define TIMECENT_RATIO 1200 | |
826 | #define SAMPLERATE_RATIO 4096 | |
827 | ||
828 | /* | |
829 | * mHz to abscent | |
830 | * conversion: abscent = log2(MHz / 8176) * 1200 | |
831 | */ | |
832 | static int | |
833 | freq_to_note(int mhz) | |
834 | { | |
835 | return snd_sf_linear_to_log(mhz, OFFSET_ABSCENT, ABSCENT_RATIO); | |
836 | } | |
837 | ||
838 | /* convert Hz to AWE32 rate offset: | |
839 | * sample pitch offset for the specified sample rate | |
840 | * rate=44100 is no offset, each 4096 is 1 octave (twice). | |
841 | * eg, when rate is 22050, this offset becomes -4096. | |
842 | * | |
843 | * conversion: offset = log2(Hz / 44100) * 4096 | |
844 | */ | |
845 | static int | |
846 | calc_rate_offset(int hz) | |
847 | { | |
848 | return snd_sf_linear_to_log(hz, OFFSET_SAMPLERATE, SAMPLERATE_RATIO); | |
849 | } | |
850 | ||
851 | ||
852 | /* calculate GUS envelope time */ | |
853 | static int | |
854 | calc_gus_envelope_time(int rate, int start, int end) | |
855 | { | |
856 | int r, p, t; | |
857 | r = (3 - ((rate >> 6) & 3)) * 3; | |
858 | p = rate & 0x3f; | |
859 | t = end - start; | |
860 | if (t < 0) t = -t; | |
861 | if (13 > r) | |
862 | t = t << (13 - r); | |
863 | else | |
864 | t = t >> (r - 13); | |
865 | return (t * 10) / (p * 441); | |
866 | } | |
867 | ||
868 | /* convert envelope time parameter to soundfont parameters */ | |
869 | ||
870 | /* attack & decay/release time table (msec) */ | |
871 | static short attack_time_tbl[128] = { | |
872 | 32767, 32767, 5989, 4235, 2994, 2518, 2117, 1780, 1497, 1373, 1259, 1154, 1058, 970, 890, 816, | |
873 | 707, 691, 662, 634, 607, 581, 557, 533, 510, 489, 468, 448, 429, 411, 393, 377, | |
874 | 361, 345, 331, 317, 303, 290, 278, 266, 255, 244, 234, 224, 214, 205, 196, 188, | |
875 | 180, 172, 165, 158, 151, 145, 139, 133, 127, 122, 117, 112, 107, 102, 98, 94, | |
876 | 90, 86, 82, 79, 75, 72, 69, 66, 63, 61, 58, 56, 53, 51, 49, 47, | |
877 | 45, 43, 41, 39, 37, 36, 34, 33, 31, 30, 29, 28, 26, 25, 24, 23, | |
878 | 22, 21, 20, 19, 19, 18, 17, 16, 16, 15, 15, 14, 13, 13, 12, 12, | |
879 | 11, 11, 10, 10, 10, 9, 9, 8, 8, 8, 8, 7, 7, 7, 6, 0, | |
880 | }; | |
881 | ||
882 | static short decay_time_tbl[128] = { | |
883 | 32767, 32767, 22614, 15990, 11307, 9508, 7995, 6723, 5653, 5184, 4754, 4359, 3997, 3665, 3361, 3082, | |
884 | 2828, 2765, 2648, 2535, 2428, 2325, 2226, 2132, 2042, 1955, 1872, 1793, 1717, 1644, 1574, 1507, | |
885 | 1443, 1382, 1324, 1267, 1214, 1162, 1113, 1066, 978, 936, 897, 859, 822, 787, 754, 722, | |
886 | 691, 662, 634, 607, 581, 557, 533, 510, 489, 468, 448, 429, 411, 393, 377, 361, | |
887 | 345, 331, 317, 303, 290, 278, 266, 255, 244, 234, 224, 214, 205, 196, 188, 180, | |
888 | 172, 165, 158, 151, 145, 139, 133, 127, 122, 117, 112, 107, 102, 98, 94, 90, | |
889 | 86, 82, 79, 75, 72, 69, 66, 63, 61, 58, 56, 53, 51, 49, 47, 45, | |
890 | 43, 41, 39, 37, 36, 34, 33, 31, 30, 29, 28, 26, 25, 24, 23, 22, | |
891 | }; | |
892 | ||
893 | /* delay time = 0x8000 - msec/92 */ | |
894 | int | |
895 | snd_sf_calc_parm_hold(int msec) | |
896 | { | |
897 | int val = (0x7f * 92 - msec) / 92; | |
898 | if (val < 1) val = 1; | |
899 | if (val >= 126) val = 126; | |
900 | return val; | |
901 | } | |
902 | ||
903 | /* search an index for specified time from given time table */ | |
904 | static int | |
905 | calc_parm_search(int msec, short *table) | |
906 | { | |
907 | int left = 1, right = 127, mid; | |
908 | while (left < right) { | |
909 | mid = (left + right) / 2; | |
910 | if (msec < (int)table[mid]) | |
911 | left = mid + 1; | |
912 | else | |
913 | right = mid; | |
914 | } | |
915 | return left; | |
916 | } | |
917 | ||
918 | /* attack time: search from time table */ | |
919 | int | |
920 | snd_sf_calc_parm_attack(int msec) | |
921 | { | |
922 | return calc_parm_search(msec, attack_time_tbl); | |
923 | } | |
924 | ||
925 | /* decay/release time: search from time table */ | |
926 | int | |
927 | snd_sf_calc_parm_decay(int msec) | |
928 | { | |
929 | return calc_parm_search(msec, decay_time_tbl); | |
930 | } | |
931 | ||
932 | int snd_sf_vol_table[128] = { | |
933 | 255,111,95,86,79,74,70,66,63,61,58,56,54,52,50,49, | |
934 | 47,46,45,43,42,41,40,39,38,37,36,35,34,34,33,32, | |
935 | 31,31,30,29,29,28,27,27,26,26,25,24,24,23,23,22, | |
936 | 22,21,21,21,20,20,19,19,18,18,18,17,17,16,16,16, | |
937 | 15,15,15,14,14,14,13,13,13,12,12,12,11,11,11,10, | |
938 | 10,10,10,9,9,9,8,8,8,8,7,7,7,7,6,6, | |
939 | 6,6,5,5,5,5,5,4,4,4,4,3,3,3,3,3, | |
940 | 2,2,2,2,2,1,1,1,1,1,0,0,0,0,0,0, | |
941 | }; | |
942 | ||
943 | ||
944 | #define calc_gus_sustain(val) (0x7f - snd_sf_vol_table[(val)/2]) | |
945 | #define calc_gus_attenuation(val) snd_sf_vol_table[(val)/2] | |
946 | ||
947 | /* load GUS patch */ | |
948 | static int | |
03da312a TI |
949 | load_guspatch(struct snd_sf_list *sflist, const char __user *data, |
950 | long count, int client) | |
1da177e4 LT |
951 | { |
952 | struct patch_info patch; | |
03da312a TI |
953 | struct snd_soundfont *sf; |
954 | struct snd_sf_zone *zone; | |
955 | struct snd_sf_sample *smp; | |
1da177e4 LT |
956 | int note, sample_id; |
957 | int rc; | |
958 | ||
959 | if (count < (long)sizeof(patch)) { | |
42b0158b | 960 | snd_printk(KERN_ERR "patch record too small %ld\n", count); |
1da177e4 LT |
961 | return -EINVAL; |
962 | } | |
963 | if (copy_from_user(&patch, data, sizeof(patch))) | |
964 | return -EFAULT; | |
965 | ||
966 | count -= sizeof(patch); | |
967 | data += sizeof(patch); | |
968 | ||
969 | sf = newsf(sflist, SNDRV_SFNT_PAT_TYPE_GUS|SNDRV_SFNT_PAT_SHARED, NULL); | |
970 | if (sf == NULL) | |
971 | return -ENOMEM; | |
972 | if ((smp = sf_sample_new(sflist, sf)) == NULL) | |
973 | return -ENOMEM; | |
974 | sample_id = sflist->sample_counter; | |
975 | smp->v.sample = sample_id; | |
976 | smp->v.start = 0; | |
977 | smp->v.end = patch.len; | |
978 | smp->v.loopstart = patch.loop_start; | |
979 | smp->v.loopend = patch.loop_end; | |
980 | smp->v.size = patch.len; | |
981 | ||
982 | /* set up mode flags */ | |
983 | smp->v.mode_flags = 0; | |
984 | if (!(patch.mode & WAVE_16_BITS)) | |
985 | smp->v.mode_flags |= SNDRV_SFNT_SAMPLE_8BITS; | |
986 | if (patch.mode & WAVE_UNSIGNED) | |
987 | smp->v.mode_flags |= SNDRV_SFNT_SAMPLE_UNSIGNED; | |
988 | smp->v.mode_flags |= SNDRV_SFNT_SAMPLE_NO_BLANK; | |
989 | if (!(patch.mode & (WAVE_LOOPING|WAVE_BIDIR_LOOP|WAVE_LOOP_BACK))) | |
990 | smp->v.mode_flags |= SNDRV_SFNT_SAMPLE_SINGLESHOT; | |
991 | if (patch.mode & WAVE_BIDIR_LOOP) | |
992 | smp->v.mode_flags |= SNDRV_SFNT_SAMPLE_BIDIR_LOOP; | |
993 | if (patch.mode & WAVE_LOOP_BACK) | |
994 | smp->v.mode_flags |= SNDRV_SFNT_SAMPLE_REVERSE_LOOP; | |
995 | ||
996 | if (patch.mode & WAVE_16_BITS) { | |
997 | /* convert to word offsets */ | |
998 | smp->v.size /= 2; | |
999 | smp->v.end /= 2; | |
1000 | smp->v.loopstart /= 2; | |
1001 | smp->v.loopend /= 2; | |
1002 | } | |
1003 | /*smp->v.loopend++;*/ | |
1004 | ||
1005 | smp->v.dummy = 0; | |
1006 | smp->v.truesize = 0; | |
1007 | smp->v.sf_id = sf->id; | |
1008 | ||
1009 | /* set up voice info */ | |
1010 | if ((zone = sf_zone_new(sflist, sf)) == NULL) { | |
1011 | sf_sample_delete(sflist, sf, smp); | |
1012 | return -ENOMEM; | |
1013 | } | |
1014 | ||
1015 | /* | |
1016 | * load wave data | |
1017 | */ | |
1018 | if (sflist->callback.sample_new) { | |
1019 | rc = sflist->callback.sample_new | |
03da312a TI |
1020 | (sflist->callback.private_data, smp, sflist->memhdr, |
1021 | data, count); | |
1da177e4 LT |
1022 | if (rc < 0) { |
1023 | sf_sample_delete(sflist, sf, smp); | |
14577c25 | 1024 | kfree(zone); |
1da177e4 LT |
1025 | return rc; |
1026 | } | |
1027 | /* memory offset is updated after */ | |
1028 | } | |
1029 | ||
1030 | /* update the memory offset here */ | |
1031 | sflist->mem_used += smp->v.truesize; | |
1032 | ||
1033 | zone->v.sample = sample_id; /* the last sample */ | |
1034 | zone->v.rate_offset = calc_rate_offset(patch.base_freq); | |
1035 | note = freq_to_note(patch.base_note); | |
1036 | zone->v.root = note / 100; | |
1037 | zone->v.tune = -(note % 100); | |
1038 | zone->v.low = (freq_to_note(patch.low_note) + 99) / 100; | |
1039 | zone->v.high = freq_to_note(patch.high_note) / 100; | |
1040 | /* panning position; -128 - 127 => 0-127 */ | |
1041 | zone->v.pan = (patch.panning + 128) / 2; | |
1042 | #if 0 | |
42b0158b TI |
1043 | snd_printk(KERN_DEBUG |
1044 | "gus: basefrq=%d (ofs=%d) root=%d,tune=%d, range:%d-%d\n", | |
1da177e4 LT |
1045 | (int)patch.base_freq, zone->v.rate_offset, |
1046 | zone->v.root, zone->v.tune, zone->v.low, zone->v.high); | |
1047 | #endif | |
1048 | ||
1049 | /* detuning is ignored */ | |
1050 | /* 6points volume envelope */ | |
1051 | if (patch.mode & WAVE_ENVELOPES) { | |
1052 | int attack, hold, decay, release; | |
1053 | attack = calc_gus_envelope_time | |
1054 | (patch.env_rate[0], 0, patch.env_offset[0]); | |
1055 | hold = calc_gus_envelope_time | |
1056 | (patch.env_rate[1], patch.env_offset[0], | |
1057 | patch.env_offset[1]); | |
1058 | decay = calc_gus_envelope_time | |
1059 | (patch.env_rate[2], patch.env_offset[1], | |
1060 | patch.env_offset[2]); | |
1061 | release = calc_gus_envelope_time | |
1062 | (patch.env_rate[3], patch.env_offset[1], | |
1063 | patch.env_offset[4]); | |
1064 | release += calc_gus_envelope_time | |
1065 | (patch.env_rate[4], patch.env_offset[3], | |
1066 | patch.env_offset[4]); | |
1067 | release += calc_gus_envelope_time | |
1068 | (patch.env_rate[5], patch.env_offset[4], | |
1069 | patch.env_offset[5]); | |
1070 | zone->v.parm.volatkhld = | |
1071 | (snd_sf_calc_parm_hold(hold) << 8) | | |
1072 | snd_sf_calc_parm_attack(attack); | |
1073 | zone->v.parm.voldcysus = (calc_gus_sustain(patch.env_offset[2]) << 8) | | |
1074 | snd_sf_calc_parm_decay(decay); | |
1075 | zone->v.parm.volrelease = 0x8000 | snd_sf_calc_parm_decay(release); | |
1076 | zone->v.attenuation = calc_gus_attenuation(patch.env_offset[0]); | |
1077 | #if 0 | |
42b0158b TI |
1078 | snd_printk(KERN_DEBUG |
1079 | "gus: atkhld=%x, dcysus=%x, volrel=%x, att=%d\n", | |
1da177e4 LT |
1080 | zone->v.parm.volatkhld, |
1081 | zone->v.parm.voldcysus, | |
1082 | zone->v.parm.volrelease, | |
1083 | zone->v.attenuation); | |
1084 | #endif | |
1085 | } | |
1086 | ||
1087 | /* fast release */ | |
1088 | if (patch.mode & WAVE_FAST_RELEASE) { | |
1089 | zone->v.parm.volrelease = 0x807f; | |
1090 | } | |
1091 | ||
1092 | /* tremolo effect */ | |
1093 | if (patch.mode & WAVE_TREMOLO) { | |
1094 | int rate = (patch.tremolo_rate * 1000 / 38) / 42; | |
1095 | zone->v.parm.tremfrq = ((patch.tremolo_depth / 2) << 8) | rate; | |
1096 | } | |
1097 | /* vibrato effect */ | |
1098 | if (patch.mode & WAVE_VIBRATO) { | |
1099 | int rate = (patch.vibrato_rate * 1000 / 38) / 42; | |
1100 | zone->v.parm.fm2frq2 = ((patch.vibrato_depth / 6) << 8) | rate; | |
1101 | } | |
1102 | ||
1103 | /* scale_freq, scale_factor, volume, and fractions not implemented */ | |
1104 | ||
1105 | if (!(smp->v.mode_flags & SNDRV_SFNT_SAMPLE_SINGLESHOT)) | |
1106 | zone->v.mode = SNDRV_SFNT_MODE_LOOPING; | |
1107 | else | |
1108 | zone->v.mode = 0; | |
1109 | ||
1110 | /* append to the tail of the list */ | |
1111 | /*zone->bank = ctrls[AWE_MD_GUS_BANK];*/ | |
1112 | zone->bank = 0; | |
1113 | zone->instr = patch.instr_no; | |
1114 | zone->mapped = 0; | |
1115 | zone->v.sf_id = sf->id; | |
1116 | ||
1117 | zone->sample = set_sample(sf, &zone->v); | |
1118 | ||
1119 | /* rebuild preset now */ | |
1120 | add_preset(sflist, zone); | |
1121 | ||
1122 | return 0; | |
1123 | } | |
1124 | ||
1125 | /* load GUS patch */ | |
1126 | int | |
03da312a | 1127 | snd_soundfont_load_guspatch(struct snd_sf_list *sflist, const char __user *data, |
1da177e4 LT |
1128 | long count, int client) |
1129 | { | |
1130 | int rc; | |
1131 | lock_preset(sflist); | |
1132 | rc = load_guspatch(sflist, data, count, client); | |
1133 | unlock_preset(sflist); | |
1134 | return rc; | |
1135 | } | |
1136 | ||
1137 | ||
1138 | /* | |
1139 | * Rebuild the preset table. This is like a hash table in that it allows | |
1140 | * quick access to the zone information. For each preset there are zone | |
1141 | * structures linked by next_instr and by next_zone. Former is the whole | |
1142 | * link for this preset, and latter is the link for zone (i.e. instrument/ | |
1143 | * bank/key combination). | |
1144 | */ | |
1145 | static void | |
03da312a | 1146 | rebuild_presets(struct snd_sf_list *sflist) |
1da177e4 | 1147 | { |
03da312a TI |
1148 | struct snd_soundfont *sf; |
1149 | struct snd_sf_zone *cur; | |
1da177e4 LT |
1150 | |
1151 | /* clear preset table */ | |
1152 | memset(sflist->presets, 0, sizeof(sflist->presets)); | |
1153 | ||
1154 | /* search all fonts and insert each font */ | |
1155 | for (sf = sflist->fonts; sf; sf = sf->next) { | |
1156 | for (cur = sf->zones; cur; cur = cur->next) { | |
1157 | if (! cur->mapped && cur->sample == NULL) { | |
1158 | /* try again to search the corresponding sample */ | |
1159 | cur->sample = set_sample(sf, &cur->v); | |
1160 | if (cur->sample == NULL) | |
1161 | continue; | |
1162 | } | |
1163 | ||
1164 | add_preset(sflist, cur); | |
1165 | } | |
1166 | } | |
1167 | } | |
1168 | ||
1169 | ||
1170 | /* | |
1171 | * add the given zone to preset table | |
1172 | */ | |
1173 | static void | |
03da312a | 1174 | add_preset(struct snd_sf_list *sflist, struct snd_sf_zone *cur) |
1da177e4 | 1175 | { |
03da312a | 1176 | struct snd_sf_zone *zone; |
1da177e4 LT |
1177 | int index; |
1178 | ||
1179 | zone = search_first_zone(sflist, cur->bank, cur->instr, cur->v.low); | |
1180 | if (zone && zone->v.sf_id != cur->v.sf_id) { | |
1181 | /* different instrument was already defined */ | |
03da312a | 1182 | struct snd_sf_zone *p; |
1da177e4 LT |
1183 | /* compare the allocated time */ |
1184 | for (p = zone; p; p = p->next_zone) { | |
1185 | if (p->counter > cur->counter) | |
1186 | /* the current is older.. skipped */ | |
1187 | return; | |
1188 | } | |
1189 | /* remove old zones */ | |
1190 | delete_preset(sflist, zone); | |
1191 | zone = NULL; /* do not forget to clear this! */ | |
1192 | } | |
1193 | ||
1194 | /* prepend this zone */ | |
1195 | if ((index = get_index(cur->bank, cur->instr, cur->v.low)) < 0) | |
1196 | return; | |
1197 | cur->next_zone = zone; /* zone link */ | |
1198 | cur->next_instr = sflist->presets[index]; /* preset table link */ | |
1199 | sflist->presets[index] = cur; | |
1200 | } | |
1201 | ||
1202 | /* | |
1203 | * delete the given zones from preset_table | |
1204 | */ | |
1205 | static void | |
03da312a | 1206 | delete_preset(struct snd_sf_list *sflist, struct snd_sf_zone *zp) |
1da177e4 LT |
1207 | { |
1208 | int index; | |
03da312a | 1209 | struct snd_sf_zone *p; |
1da177e4 LT |
1210 | |
1211 | if ((index = get_index(zp->bank, zp->instr, zp->v.low)) < 0) | |
1212 | return; | |
1213 | for (p = sflist->presets[index]; p; p = p->next_instr) { | |
1214 | while (p->next_instr == zp) { | |
1215 | p->next_instr = zp->next_instr; | |
1216 | zp = zp->next_zone; | |
1217 | if (zp == NULL) | |
1218 | return; | |
1219 | } | |
1220 | } | |
1221 | } | |
1222 | ||
1223 | ||
1224 | /* | |
1225 | * Search matching zones from preset table. | |
1226 | * The note can be rewritten by preset mapping (alias). | |
1227 | * The found zones are stored on 'table' array. max_layers defines | |
1228 | * the maximum number of elements in this array. | |
1229 | * This function returns the number of found zones. 0 if not found. | |
1230 | */ | |
1231 | int | |
03da312a | 1232 | snd_soundfont_search_zone(struct snd_sf_list *sflist, int *notep, int vel, |
1da177e4 LT |
1233 | int preset, int bank, |
1234 | int def_preset, int def_bank, | |
03da312a | 1235 | struct snd_sf_zone **table, int max_layers) |
1da177e4 LT |
1236 | { |
1237 | int nvoices; | |
1238 | unsigned long flags; | |
1239 | ||
1240 | /* this function is supposed to be called atomically, | |
1241 | * so we check the lock. if it's busy, just returns 0 to | |
1242 | * tell the caller the busy state | |
1243 | */ | |
1244 | spin_lock_irqsave(&sflist->lock, flags); | |
1245 | if (sflist->presets_locked) { | |
1246 | spin_unlock_irqrestore(&sflist->lock, flags); | |
1247 | return 0; | |
1248 | } | |
03da312a TI |
1249 | nvoices = search_zones(sflist, notep, vel, preset, bank, |
1250 | table, max_layers, 0); | |
1da177e4 LT |
1251 | if (! nvoices) { |
1252 | if (preset != def_preset || bank != def_bank) | |
03da312a TI |
1253 | nvoices = search_zones(sflist, notep, vel, |
1254 | def_preset, def_bank, | |
1255 | table, max_layers, 0); | |
1da177e4 LT |
1256 | } |
1257 | spin_unlock_irqrestore(&sflist->lock, flags); | |
1258 | return nvoices; | |
1259 | } | |
1260 | ||
1261 | ||
1262 | /* | |
1263 | * search the first matching zone | |
1264 | */ | |
03da312a TI |
1265 | static struct snd_sf_zone * |
1266 | search_first_zone(struct snd_sf_list *sflist, int bank, int preset, int key) | |
1da177e4 LT |
1267 | { |
1268 | int index; | |
03da312a | 1269 | struct snd_sf_zone *zp; |
1da177e4 LT |
1270 | |
1271 | if ((index = get_index(bank, preset, key)) < 0) | |
1272 | return NULL; | |
1273 | for (zp = sflist->presets[index]; zp; zp = zp->next_instr) { | |
1274 | if (zp->instr == preset && zp->bank == bank) | |
1275 | return zp; | |
1276 | } | |
1277 | return NULL; | |
1278 | } | |
1279 | ||
1280 | ||
1281 | /* | |
1282 | * search matching zones from sflist. can be called recursively. | |
1283 | */ | |
1284 | static int | |
03da312a TI |
1285 | search_zones(struct snd_sf_list *sflist, int *notep, int vel, |
1286 | int preset, int bank, struct snd_sf_zone **table, | |
1287 | int max_layers, int level) | |
1da177e4 | 1288 | { |
03da312a | 1289 | struct snd_sf_zone *zp; |
1da177e4 LT |
1290 | int nvoices; |
1291 | ||
1292 | zp = search_first_zone(sflist, bank, preset, *notep); | |
1293 | nvoices = 0; | |
1294 | for (; zp; zp = zp->next_zone) { | |
1295 | if (*notep >= zp->v.low && *notep <= zp->v.high && | |
1296 | vel >= zp->v.vellow && vel <= zp->v.velhigh) { | |
1297 | if (zp->mapped) { | |
1298 | /* search preset mapping (aliasing) */ | |
1299 | int key = zp->v.fixkey; | |
1300 | preset = zp->v.start; | |
1301 | bank = zp->v.end; | |
1302 | ||
1303 | if (level > 5) /* too deep alias level */ | |
1304 | return 0; | |
1305 | if (key < 0) | |
1306 | key = *notep; | |
1307 | nvoices = search_zones(sflist, &key, vel, | |
1308 | preset, bank, table, | |
1309 | max_layers, level + 1); | |
1310 | if (nvoices > 0) | |
1311 | *notep = key; | |
1312 | break; | |
1313 | } | |
1314 | table[nvoices++] = zp; | |
1315 | if (nvoices >= max_layers) | |
1316 | break; | |
1317 | } | |
1318 | } | |
1319 | ||
1320 | return nvoices; | |
1321 | } | |
1322 | ||
1323 | ||
1324 | /* calculate the index of preset table: | |
1325 | * drums are mapped from 128 to 255 according to its note key. | |
1326 | * other instruments are mapped from 0 to 127. | |
1327 | * if the index is out of range, return -1. | |
1328 | */ | |
1329 | static int | |
1330 | get_index(int bank, int instr, int key) | |
1331 | { | |
1332 | int index; | |
1333 | if (SF_IS_DRUM_BANK(bank)) | |
1334 | index = key + SF_MAX_INSTRUMENTS; | |
1335 | else | |
1336 | index = instr; | |
1337 | index = index % SF_MAX_PRESETS; | |
1338 | if (index < 0) | |
1339 | return -1; | |
1340 | return index; | |
1341 | } | |
1342 | ||
1343 | /* | |
1344 | * Initialise the sflist structure. | |
1345 | */ | |
1346 | static void | |
03da312a | 1347 | snd_sf_init(struct snd_sf_list *sflist) |
1da177e4 LT |
1348 | { |
1349 | memset(sflist->presets, 0, sizeof(sflist->presets)); | |
1350 | ||
1351 | sflist->mem_used = 0; | |
1352 | sflist->currsf = NULL; | |
1353 | sflist->open_client = -1; | |
1354 | sflist->fonts = NULL; | |
1355 | sflist->fonts_size = 0; | |
1356 | sflist->zone_counter = 0; | |
1357 | sflist->sample_counter = 0; | |
1358 | sflist->zone_locked = 0; | |
1359 | sflist->sample_locked = 0; | |
1360 | } | |
1361 | ||
1362 | /* | |
1363 | * Release all list records | |
1364 | */ | |
1365 | static void | |
03da312a | 1366 | snd_sf_clear(struct snd_sf_list *sflist) |
1da177e4 | 1367 | { |
03da312a TI |
1368 | struct snd_soundfont *sf, *nextsf; |
1369 | struct snd_sf_zone *zp, *nextzp; | |
1370 | struct snd_sf_sample *sp, *nextsp; | |
1da177e4 LT |
1371 | |
1372 | for (sf = sflist->fonts; sf; sf = nextsf) { | |
1373 | nextsf = sf->next; | |
1374 | for (zp = sf->zones; zp; zp = nextzp) { | |
1375 | nextzp = zp->next; | |
1376 | kfree(zp); | |
1377 | } | |
1378 | for (sp = sf->samples; sp; sp = nextsp) { | |
1379 | nextsp = sp->next; | |
1380 | if (sflist->callback.sample_free) | |
03da312a TI |
1381 | sflist->callback.sample_free(sflist->callback.private_data, |
1382 | sp, sflist->memhdr); | |
1da177e4 LT |
1383 | kfree(sp); |
1384 | } | |
1385 | kfree(sf); | |
1386 | } | |
1387 | ||
1388 | snd_sf_init(sflist); | |
1389 | } | |
1390 | ||
1391 | ||
1392 | /* | |
1393 | * Create a new sflist structure | |
1394 | */ | |
03da312a TI |
1395 | struct snd_sf_list * |
1396 | snd_sf_new(struct snd_sf_callback *callback, struct snd_util_memhdr *hdr) | |
1da177e4 | 1397 | { |
03da312a | 1398 | struct snd_sf_list *sflist; |
1da177e4 | 1399 | |
561b220a | 1400 | if ((sflist = kzalloc(sizeof(*sflist), GFP_KERNEL)) == NULL) |
1da177e4 LT |
1401 | return NULL; |
1402 | ||
ef9f0a42 | 1403 | mutex_init(&sflist->presets_mutex); |
1da177e4 LT |
1404 | spin_lock_init(&sflist->lock); |
1405 | sflist->memhdr = hdr; | |
1406 | ||
1407 | if (callback) | |
1408 | sflist->callback = *callback; | |
1409 | ||
1410 | snd_sf_init(sflist); | |
1411 | return sflist; | |
1412 | } | |
1413 | ||
1414 | ||
1415 | /* | |
1416 | * Free everything allocated off the sflist structure. | |
1417 | */ | |
1418 | void | |
03da312a | 1419 | snd_sf_free(struct snd_sf_list *sflist) |
1da177e4 LT |
1420 | { |
1421 | if (sflist == NULL) | |
1422 | return; | |
1423 | ||
1424 | lock_preset(sflist); | |
1425 | if (sflist->callback.sample_reset) | |
1426 | sflist->callback.sample_reset(sflist->callback.private_data); | |
1427 | snd_sf_clear(sflist); | |
1428 | unlock_preset(sflist); | |
1429 | ||
1430 | kfree(sflist); | |
1431 | } | |
1432 | ||
1433 | /* | |
1434 | * Remove all samples | |
1435 | * The soundcard should be silet before calling this function. | |
1436 | */ | |
1437 | int | |
03da312a | 1438 | snd_soundfont_remove_samples(struct snd_sf_list *sflist) |
1da177e4 LT |
1439 | { |
1440 | lock_preset(sflist); | |
1441 | if (sflist->callback.sample_reset) | |
1442 | sflist->callback.sample_reset(sflist->callback.private_data); | |
1443 | snd_sf_clear(sflist); | |
1444 | unlock_preset(sflist); | |
1445 | ||
1446 | return 0; | |
1447 | } | |
1448 | ||
1449 | /* | |
1450 | * Remove unlocked samples. | |
1451 | * The soundcard should be silent before calling this function. | |
1452 | */ | |
1453 | int | |
03da312a | 1454 | snd_soundfont_remove_unlocked(struct snd_sf_list *sflist) |
1da177e4 | 1455 | { |
03da312a TI |
1456 | struct snd_soundfont *sf; |
1457 | struct snd_sf_zone *zp, *nextzp; | |
1458 | struct snd_sf_sample *sp, *nextsp; | |
1da177e4 LT |
1459 | |
1460 | lock_preset(sflist); | |
1461 | ||
1462 | if (sflist->callback.sample_reset) | |
1463 | sflist->callback.sample_reset(sflist->callback.private_data); | |
1464 | ||
1465 | /* to be sure */ | |
1466 | memset(sflist->presets, 0, sizeof(sflist->presets)); | |
1467 | ||
1468 | for (sf = sflist->fonts; sf; sf = sf->next) { | |
1469 | for (zp = sf->zones; zp; zp = nextzp) { | |
1470 | if (zp->counter < sflist->zone_locked) | |
1471 | break; | |
1472 | nextzp = zp->next; | |
1473 | sf->zones = nextzp; | |
1474 | kfree(zp); | |
1475 | } | |
1476 | ||
1477 | for (sp = sf->samples; sp; sp = nextsp) { | |
1478 | if (sp->counter < sflist->sample_locked) | |
1479 | break; | |
1480 | nextsp = sp->next; | |
1481 | sf->samples = nextsp; | |
1482 | sflist->mem_used -= sp->v.truesize; | |
1483 | if (sflist->callback.sample_free) | |
03da312a TI |
1484 | sflist->callback.sample_free(sflist->callback.private_data, |
1485 | sp, sflist->memhdr); | |
1da177e4 LT |
1486 | kfree(sp); |
1487 | } | |
1488 | } | |
1489 | ||
1490 | sflist->zone_counter = sflist->zone_locked; | |
1491 | sflist->sample_counter = sflist->sample_locked; | |
1492 | ||
1493 | rebuild_presets(sflist); | |
1494 | ||
1495 | unlock_preset(sflist); | |
1496 | return 0; | |
1497 | } |