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1a59d1b8 | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
1da177e4 LT |
2 | /* |
3 | * Soundfont generic routines. | |
4 | * It is intended that these should be used by any driver that is willing | |
5 | * to accept soundfont patches. | |
6 | * | |
7 | * Copyright (C) 1999 Steve Ratcliffe | |
8 | * Copyright (c) 1999-2000 Takashi Iwai <tiwai@suse.de> | |
1da177e4 LT |
9 | */ |
10 | /* | |
11 | * Deal with reading in of a soundfont. Code follows the OSS way | |
12 | * of doing things so that the old sfxload utility can be used. | |
13 | * Everything may change when there is an alsa way of doing things. | |
14 | */ | |
976412fb | 15 | #include <linux/uaccess.h> |
1da177e4 | 16 | #include <linux/slab.h> |
d81a6d71 | 17 | #include <linux/export.h> |
1da177e4 LT |
18 | #include <sound/core.h> |
19 | #include <sound/soundfont.h> | |
20 | #include <sound/seq_oss_legacy.h> | |
21 | ||
22 | /* Prototypes for static functions */ | |
23 | ||
03da312a TI |
24 | static int open_patch(struct snd_sf_list *sflist, const char __user *data, |
25 | int count, int client); | |
26 | static struct snd_soundfont *newsf(struct snd_sf_list *sflist, int type, char *name); | |
27 | static int is_identical_font(struct snd_soundfont *sf, int type, unsigned char *name); | |
28 | static int close_patch(struct snd_sf_list *sflist); | |
29 | static int probe_data(struct snd_sf_list *sflist, int sample_id); | |
30 | static void set_zone_counter(struct snd_sf_list *sflist, | |
31 | struct snd_soundfont *sf, struct snd_sf_zone *zp); | |
32 | static struct snd_sf_zone *sf_zone_new(struct snd_sf_list *sflist, | |
33 | struct snd_soundfont *sf); | |
34 | static void set_sample_counter(struct snd_sf_list *sflist, | |
35 | struct snd_soundfont *sf, struct snd_sf_sample *sp); | |
36 | static struct snd_sf_sample *sf_sample_new(struct snd_sf_list *sflist, | |
37 | struct snd_soundfont *sf); | |
38 | static void sf_sample_delete(struct snd_sf_list *sflist, | |
39 | struct snd_soundfont *sf, struct snd_sf_sample *sp); | |
40 | static int load_map(struct snd_sf_list *sflist, const void __user *data, int count); | |
41 | static int load_info(struct snd_sf_list *sflist, const void __user *data, long count); | |
42 | static int remove_info(struct snd_sf_list *sflist, struct snd_soundfont *sf, | |
43 | int bank, int instr); | |
44 | static void init_voice_info(struct soundfont_voice_info *avp); | |
45 | static void init_voice_parm(struct soundfont_voice_parm *pp); | |
46 | static struct snd_sf_sample *set_sample(struct snd_soundfont *sf, | |
47 | struct soundfont_voice_info *avp); | |
48 | static struct snd_sf_sample *find_sample(struct snd_soundfont *sf, int sample_id); | |
49 | static int load_data(struct snd_sf_list *sflist, const void __user *data, long count); | |
50 | static void rebuild_presets(struct snd_sf_list *sflist); | |
51 | static void add_preset(struct snd_sf_list *sflist, struct snd_sf_zone *cur); | |
52 | static void delete_preset(struct snd_sf_list *sflist, struct snd_sf_zone *zp); | |
53 | static struct snd_sf_zone *search_first_zone(struct snd_sf_list *sflist, | |
54 | int bank, int preset, int key); | |
55 | static int search_zones(struct snd_sf_list *sflist, int *notep, int vel, | |
56 | int preset, int bank, struct snd_sf_zone **table, | |
57 | int max_layers, int level); | |
1da177e4 | 58 | static int get_index(int bank, int instr, int key); |
03da312a TI |
59 | static void snd_sf_init(struct snd_sf_list *sflist); |
60 | static void snd_sf_clear(struct snd_sf_list *sflist); | |
1da177e4 LT |
61 | |
62 | /* | |
63 | * lock access to sflist | |
64 | */ | |
65 | static void | |
03da312a | 66 | lock_preset(struct snd_sf_list *sflist) |
1da177e4 LT |
67 | { |
68 | unsigned long flags; | |
ef9f0a42 | 69 | mutex_lock(&sflist->presets_mutex); |
1da177e4 LT |
70 | spin_lock_irqsave(&sflist->lock, flags); |
71 | sflist->presets_locked = 1; | |
72 | spin_unlock_irqrestore(&sflist->lock, flags); | |
73 | } | |
74 | ||
75 | ||
76 | /* | |
77 | * remove lock | |
78 | */ | |
79 | static void | |
03da312a | 80 | unlock_preset(struct snd_sf_list *sflist) |
1da177e4 LT |
81 | { |
82 | unsigned long flags; | |
83 | spin_lock_irqsave(&sflist->lock, flags); | |
84 | sflist->presets_locked = 0; | |
85 | spin_unlock_irqrestore(&sflist->lock, flags); | |
ef9f0a42 | 86 | mutex_unlock(&sflist->presets_mutex); |
1da177e4 LT |
87 | } |
88 | ||
89 | ||
90 | /* | |
91 | * close the patch if the patch was opened by this client. | |
92 | */ | |
93 | int | |
03da312a | 94 | snd_soundfont_close_check(struct snd_sf_list *sflist, int client) |
1da177e4 LT |
95 | { |
96 | unsigned long flags; | |
97 | spin_lock_irqsave(&sflist->lock, flags); | |
98 | if (sflist->open_client == client) { | |
99 | spin_unlock_irqrestore(&sflist->lock, flags); | |
100 | return close_patch(sflist); | |
101 | } | |
102 | spin_unlock_irqrestore(&sflist->lock, flags); | |
103 | return 0; | |
104 | } | |
105 | ||
106 | ||
107 | /* | |
108 | * Deal with a soundfont patch. Any driver could use these routines | |
109 | * although it was designed for the AWE64. | |
110 | * | |
111 | * The sample_write and callargs pararameters allow a callback into | |
112 | * the actual driver to write sample data to the board or whatever | |
113 | * it wants to do with it. | |
114 | */ | |
115 | int | |
03da312a TI |
116 | snd_soundfont_load(struct snd_sf_list *sflist, const void __user *data, |
117 | long count, int client) | |
1da177e4 | 118 | { |
03da312a | 119 | struct soundfont_patch_info patch; |
1da177e4 LT |
120 | unsigned long flags; |
121 | int rc; | |
122 | ||
123 | if (count < (long)sizeof(patch)) { | |
42b0158b | 124 | snd_printk(KERN_ERR "patch record too small %ld\n", count); |
1da177e4 LT |
125 | return -EINVAL; |
126 | } | |
127 | if (copy_from_user(&patch, data, sizeof(patch))) | |
128 | return -EFAULT; | |
129 | ||
130 | count -= sizeof(patch); | |
131 | data += sizeof(patch); | |
132 | ||
133 | if (patch.key != SNDRV_OSS_SOUNDFONT_PATCH) { | |
42b0158b | 134 | snd_printk(KERN_ERR "The wrong kind of patch %x\n", patch.key); |
1da177e4 LT |
135 | return -EINVAL; |
136 | } | |
137 | if (count < patch.len) { | |
42b0158b TI |
138 | snd_printk(KERN_ERR "Patch too short %ld, need %d\n", |
139 | count, patch.len); | |
1da177e4 LT |
140 | return -EINVAL; |
141 | } | |
142 | if (patch.len < 0) { | |
42b0158b | 143 | snd_printk(KERN_ERR "poor length %d\n", patch.len); |
1da177e4 LT |
144 | return -EINVAL; |
145 | } | |
146 | ||
147 | if (patch.type == SNDRV_SFNT_OPEN_PATCH) { | |
148 | /* grab sflist to open */ | |
149 | lock_preset(sflist); | |
150 | rc = open_patch(sflist, data, count, client); | |
151 | unlock_preset(sflist); | |
152 | return rc; | |
153 | } | |
154 | ||
155 | /* check if other client already opened patch */ | |
156 | spin_lock_irqsave(&sflist->lock, flags); | |
157 | if (sflist->open_client != client) { | |
158 | spin_unlock_irqrestore(&sflist->lock, flags); | |
159 | return -EBUSY; | |
160 | } | |
161 | spin_unlock_irqrestore(&sflist->lock, flags); | |
162 | ||
163 | lock_preset(sflist); | |
164 | rc = -EINVAL; | |
165 | switch (patch.type) { | |
166 | case SNDRV_SFNT_LOAD_INFO: | |
167 | rc = load_info(sflist, data, count); | |
168 | break; | |
169 | case SNDRV_SFNT_LOAD_DATA: | |
170 | rc = load_data(sflist, data, count); | |
171 | break; | |
172 | case SNDRV_SFNT_CLOSE_PATCH: | |
173 | rc = close_patch(sflist); | |
174 | break; | |
175 | case SNDRV_SFNT_REPLACE_DATA: | |
176 | /*rc = replace_data(&patch, data, count);*/ | |
177 | break; | |
178 | case SNDRV_SFNT_MAP_PRESET: | |
179 | rc = load_map(sflist, data, count); | |
180 | break; | |
181 | case SNDRV_SFNT_PROBE_DATA: | |
182 | rc = probe_data(sflist, patch.optarg); | |
183 | break; | |
184 | case SNDRV_SFNT_REMOVE_INFO: | |
185 | /* patch must be opened */ | |
d20cad60 | 186 | if (!sflist->currsf) { |
42b0158b TI |
187 | snd_printk(KERN_ERR "soundfont: remove_info: " |
188 | "patch not opened\n"); | |
1da177e4 LT |
189 | rc = -EINVAL; |
190 | } else { | |
191 | int bank, instr; | |
192 | bank = ((unsigned short)patch.optarg >> 8) & 0xff; | |
193 | instr = (unsigned short)patch.optarg & 0xff; | |
194 | if (! remove_info(sflist, sflist->currsf, bank, instr)) | |
195 | rc = -EINVAL; | |
196 | else | |
197 | rc = 0; | |
198 | } | |
199 | break; | |
200 | } | |
201 | unlock_preset(sflist); | |
202 | ||
203 | return rc; | |
204 | } | |
205 | ||
206 | ||
207 | /* check if specified type is special font (GUS or preset-alias) */ | |
208 | static inline int | |
209 | is_special_type(int type) | |
210 | { | |
211 | type &= 0x0f; | |
212 | return (type == SNDRV_SFNT_PAT_TYPE_GUS || | |
213 | type == SNDRV_SFNT_PAT_TYPE_MAP); | |
214 | } | |
215 | ||
216 | ||
217 | /* open patch; create sf list */ | |
218 | static int | |
03da312a TI |
219 | open_patch(struct snd_sf_list *sflist, const char __user *data, |
220 | int count, int client) | |
1da177e4 | 221 | { |
03da312a TI |
222 | struct soundfont_open_parm parm; |
223 | struct snd_soundfont *sf; | |
1da177e4 LT |
224 | unsigned long flags; |
225 | ||
226 | spin_lock_irqsave(&sflist->lock, flags); | |
227 | if (sflist->open_client >= 0 || sflist->currsf) { | |
228 | spin_unlock_irqrestore(&sflist->lock, flags); | |
229 | return -EBUSY; | |
230 | } | |
231 | spin_unlock_irqrestore(&sflist->lock, flags); | |
232 | ||
233 | if (copy_from_user(&parm, data, sizeof(parm))) | |
234 | return -EFAULT; | |
235 | ||
236 | if (is_special_type(parm.type)) { | |
237 | parm.type |= SNDRV_SFNT_PAT_SHARED; | |
238 | sf = newsf(sflist, parm.type, NULL); | |
239 | } else | |
240 | sf = newsf(sflist, parm.type, parm.name); | |
241 | if (sf == NULL) { | |
242 | return -ENOMEM; | |
243 | } | |
244 | ||
245 | spin_lock_irqsave(&sflist->lock, flags); | |
246 | sflist->open_client = client; | |
247 | sflist->currsf = sf; | |
248 | spin_unlock_irqrestore(&sflist->lock, flags); | |
249 | ||
250 | return 0; | |
251 | } | |
252 | ||
253 | /* | |
254 | * Allocate a new soundfont structure. | |
255 | */ | |
03da312a TI |
256 | static struct snd_soundfont * |
257 | newsf(struct snd_sf_list *sflist, int type, char *name) | |
1da177e4 | 258 | { |
03da312a | 259 | struct snd_soundfont *sf; |
1da177e4 LT |
260 | |
261 | /* check the shared fonts */ | |
262 | if (type & SNDRV_SFNT_PAT_SHARED) { | |
263 | for (sf = sflist->fonts; sf; sf = sf->next) { | |
264 | if (is_identical_font(sf, type, name)) { | |
265 | return sf; | |
266 | } | |
267 | } | |
268 | } | |
269 | ||
270 | /* not found -- create a new one */ | |
561b220a | 271 | sf = kzalloc(sizeof(*sf), GFP_KERNEL); |
1da177e4 LT |
272 | if (sf == NULL) |
273 | return NULL; | |
274 | sf->id = sflist->fonts_size; | |
275 | sflist->fonts_size++; | |
276 | ||
277 | /* prepend this record */ | |
278 | sf->next = sflist->fonts; | |
279 | sflist->fonts = sf; | |
280 | ||
281 | sf->type = type; | |
282 | sf->zones = NULL; | |
283 | sf->samples = NULL; | |
284 | if (name) | |
285 | memcpy(sf->name, name, SNDRV_SFNT_PATCH_NAME_LEN); | |
286 | ||
287 | return sf; | |
288 | } | |
289 | ||
290 | /* check if the given name matches to the existing list */ | |
291 | static int | |
03da312a | 292 | is_identical_font(struct snd_soundfont *sf, int type, unsigned char *name) |
1da177e4 LT |
293 | { |
294 | return ((sf->type & SNDRV_SFNT_PAT_SHARED) && | |
295 | (sf->type & 0x0f) == (type & 0x0f) && | |
296 | (name == NULL || | |
297 | memcmp(sf->name, name, SNDRV_SFNT_PATCH_NAME_LEN) == 0)); | |
298 | } | |
299 | ||
300 | /* | |
301 | * Close the current patch. | |
302 | */ | |
303 | static int | |
03da312a | 304 | close_patch(struct snd_sf_list *sflist) |
1da177e4 LT |
305 | { |
306 | unsigned long flags; | |
307 | ||
308 | spin_lock_irqsave(&sflist->lock, flags); | |
309 | sflist->currsf = NULL; | |
310 | sflist->open_client = -1; | |
311 | spin_unlock_irqrestore(&sflist->lock, flags); | |
312 | ||
313 | rebuild_presets(sflist); | |
314 | ||
315 | return 0; | |
316 | ||
317 | } | |
318 | ||
319 | /* probe sample in the current list -- nothing to be loaded */ | |
320 | static int | |
03da312a | 321 | probe_data(struct snd_sf_list *sflist, int sample_id) |
1da177e4 LT |
322 | { |
323 | /* patch must be opened */ | |
324 | if (sflist->currsf) { | |
325 | /* search the specified sample by optarg */ | |
326 | if (find_sample(sflist->currsf, sample_id)) | |
327 | return 0; | |
328 | } | |
329 | return -EINVAL; | |
330 | } | |
331 | ||
332 | /* | |
333 | * increment zone counter | |
334 | */ | |
335 | static void | |
03da312a TI |
336 | set_zone_counter(struct snd_sf_list *sflist, struct snd_soundfont *sf, |
337 | struct snd_sf_zone *zp) | |
1da177e4 LT |
338 | { |
339 | zp->counter = sflist->zone_counter++; | |
340 | if (sf->type & SNDRV_SFNT_PAT_LOCKED) | |
341 | sflist->zone_locked = sflist->zone_counter; | |
342 | } | |
343 | ||
344 | /* | |
345 | * allocate a new zone record | |
346 | */ | |
03da312a TI |
347 | static struct snd_sf_zone * |
348 | sf_zone_new(struct snd_sf_list *sflist, struct snd_soundfont *sf) | |
1da177e4 | 349 | { |
03da312a | 350 | struct snd_sf_zone *zp; |
1da177e4 | 351 | |
561b220a | 352 | if ((zp = kzalloc(sizeof(*zp), GFP_KERNEL)) == NULL) |
1da177e4 LT |
353 | return NULL; |
354 | zp->next = sf->zones; | |
355 | sf->zones = zp; | |
356 | ||
357 | init_voice_info(&zp->v); | |
358 | ||
359 | set_zone_counter(sflist, sf, zp); | |
360 | return zp; | |
361 | } | |
362 | ||
363 | ||
364 | /* | |
fbfecd37 | 365 | * increment sample counter |
1da177e4 LT |
366 | */ |
367 | static void | |
03da312a TI |
368 | set_sample_counter(struct snd_sf_list *sflist, struct snd_soundfont *sf, |
369 | struct snd_sf_sample *sp) | |
1da177e4 LT |
370 | { |
371 | sp->counter = sflist->sample_counter++; | |
372 | if (sf->type & SNDRV_SFNT_PAT_LOCKED) | |
373 | sflist->sample_locked = sflist->sample_counter; | |
374 | } | |
375 | ||
376 | /* | |
377 | * allocate a new sample list record | |
378 | */ | |
03da312a TI |
379 | static struct snd_sf_sample * |
380 | sf_sample_new(struct snd_sf_list *sflist, struct snd_soundfont *sf) | |
1da177e4 | 381 | { |
03da312a | 382 | struct snd_sf_sample *sp; |
1da177e4 | 383 | |
561b220a | 384 | if ((sp = kzalloc(sizeof(*sp), GFP_KERNEL)) == NULL) |
1da177e4 LT |
385 | return NULL; |
386 | ||
387 | sp->next = sf->samples; | |
388 | sf->samples = sp; | |
389 | ||
390 | set_sample_counter(sflist, sf, sp); | |
391 | return sp; | |
392 | } | |
393 | ||
394 | /* | |
395 | * delete sample list -- this is an exceptional job. | |
396 | * only the last allocated sample can be deleted. | |
397 | */ | |
398 | static void | |
03da312a TI |
399 | sf_sample_delete(struct snd_sf_list *sflist, struct snd_soundfont *sf, |
400 | struct snd_sf_sample *sp) | |
1da177e4 LT |
401 | { |
402 | /* only last sample is accepted */ | |
403 | if (sp == sf->samples) { | |
404 | sf->samples = sp->next; | |
405 | kfree(sp); | |
406 | } | |
407 | } | |
408 | ||
409 | ||
410 | /* load voice map */ | |
411 | static int | |
03da312a | 412 | load_map(struct snd_sf_list *sflist, const void __user *data, int count) |
1da177e4 | 413 | { |
03da312a TI |
414 | struct snd_sf_zone *zp, *prevp; |
415 | struct snd_soundfont *sf; | |
416 | struct soundfont_voice_map map; | |
1da177e4 LT |
417 | |
418 | /* get the link info */ | |
419 | if (count < (int)sizeof(map)) | |
420 | return -EINVAL; | |
421 | if (copy_from_user(&map, data, sizeof(map))) | |
422 | return -EFAULT; | |
423 | ||
424 | if (map.map_instr < 0 || map.map_instr >= SF_MAX_INSTRUMENTS) | |
425 | return -EINVAL; | |
426 | ||
427 | sf = newsf(sflist, SNDRV_SFNT_PAT_TYPE_MAP|SNDRV_SFNT_PAT_SHARED, NULL); | |
428 | if (sf == NULL) | |
429 | return -ENOMEM; | |
430 | ||
431 | prevp = NULL; | |
432 | for (zp = sf->zones; zp; prevp = zp, zp = zp->next) { | |
433 | if (zp->mapped && | |
434 | zp->instr == map.map_instr && | |
435 | zp->bank == map.map_bank && | |
436 | zp->v.low == map.map_key && | |
437 | zp->v.start == map.src_instr && | |
438 | zp->v.end == map.src_bank && | |
439 | zp->v.fixkey == map.src_key) { | |
440 | /* the same mapping is already present */ | |
441 | /* relink this record to the link head */ | |
442 | if (prevp) { | |
443 | prevp->next = zp->next; | |
444 | zp->next = sf->zones; | |
445 | sf->zones = zp; | |
446 | } | |
447 | /* update the counter */ | |
448 | set_zone_counter(sflist, sf, zp); | |
449 | return 0; | |
450 | } | |
451 | } | |
452 | ||
453 | /* create a new zone */ | |
454 | if ((zp = sf_zone_new(sflist, sf)) == NULL) | |
455 | return -ENOMEM; | |
456 | ||
457 | zp->bank = map.map_bank; | |
458 | zp->instr = map.map_instr; | |
459 | zp->mapped = 1; | |
460 | if (map.map_key >= 0) { | |
461 | zp->v.low = map.map_key; | |
462 | zp->v.high = map.map_key; | |
463 | } | |
464 | zp->v.start = map.src_instr; | |
465 | zp->v.end = map.src_bank; | |
466 | zp->v.fixkey = map.src_key; | |
467 | zp->v.sf_id = sf->id; | |
468 | ||
469 | add_preset(sflist, zp); | |
470 | ||
471 | return 0; | |
472 | } | |
473 | ||
474 | ||
475 | /* remove the present instrument layers */ | |
476 | static int | |
03da312a TI |
477 | remove_info(struct snd_sf_list *sflist, struct snd_soundfont *sf, |
478 | int bank, int instr) | |
1da177e4 | 479 | { |
03da312a | 480 | struct snd_sf_zone *prev, *next, *p; |
1da177e4 LT |
481 | int removed = 0; |
482 | ||
483 | prev = NULL; | |
484 | for (p = sf->zones; p; p = next) { | |
485 | next = p->next; | |
486 | if (! p->mapped && | |
487 | p->bank == bank && p->instr == instr) { | |
488 | /* remove this layer */ | |
489 | if (prev) | |
490 | prev->next = next; | |
491 | else | |
492 | sf->zones = next; | |
493 | removed++; | |
494 | kfree(p); | |
495 | } else | |
496 | prev = p; | |
497 | } | |
498 | if (removed) | |
499 | rebuild_presets(sflist); | |
500 | return removed; | |
501 | } | |
502 | ||
503 | ||
504 | /* | |
505 | * Read an info record from the user buffer and save it on the current | |
506 | * open soundfont. | |
507 | */ | |
508 | static int | |
03da312a | 509 | load_info(struct snd_sf_list *sflist, const void __user *data, long count) |
1da177e4 | 510 | { |
03da312a TI |
511 | struct snd_soundfont *sf; |
512 | struct snd_sf_zone *zone; | |
513 | struct soundfont_voice_rec_hdr hdr; | |
1da177e4 LT |
514 | int i; |
515 | ||
516 | /* patch must be opened */ | |
517 | if ((sf = sflist->currsf) == NULL) | |
518 | return -EINVAL; | |
519 | ||
520 | if (is_special_type(sf->type)) | |
521 | return -EINVAL; | |
522 | ||
523 | if (count < (long)sizeof(hdr)) { | |
42b0158b | 524 | printk(KERN_ERR "Soundfont error: invalid patch zone length\n"); |
1da177e4 LT |
525 | return -EINVAL; |
526 | } | |
527 | if (copy_from_user((char*)&hdr, data, sizeof(hdr))) | |
528 | return -EFAULT; | |
529 | ||
530 | data += sizeof(hdr); | |
531 | count -= sizeof(hdr); | |
532 | ||
533 | if (hdr.nvoices <= 0 || hdr.nvoices >= 100) { | |
42b0158b TI |
534 | printk(KERN_ERR "Soundfont error: Illegal voice number %d\n", |
535 | hdr.nvoices); | |
1da177e4 LT |
536 | return -EINVAL; |
537 | } | |
538 | ||
03da312a | 539 | if (count < (long)sizeof(struct soundfont_voice_info) * hdr.nvoices) { |
42b0158b TI |
540 | printk(KERN_ERR "Soundfont Error: " |
541 | "patch length(%ld) is smaller than nvoices(%d)\n", | |
1da177e4 LT |
542 | count, hdr.nvoices); |
543 | return -EINVAL; | |
544 | } | |
545 | ||
546 | switch (hdr.write_mode) { | |
547 | case SNDRV_SFNT_WR_EXCLUSIVE: | |
548 | /* exclusive mode - if the instrument already exists, | |
549 | return error */ | |
550 | for (zone = sf->zones; zone; zone = zone->next) { | |
551 | if (!zone->mapped && | |
552 | zone->bank == hdr.bank && | |
553 | zone->instr == hdr.instr) | |
554 | return -EINVAL; | |
555 | } | |
556 | break; | |
557 | case SNDRV_SFNT_WR_REPLACE: | |
558 | /* replace mode - remove the instrument if it already exists */ | |
559 | remove_info(sflist, sf, hdr.bank, hdr.instr); | |
560 | break; | |
561 | } | |
562 | ||
563 | for (i = 0; i < hdr.nvoices; i++) { | |
03da312a | 564 | struct snd_sf_zone tmpzone; |
1da177e4 LT |
565 | |
566 | /* copy awe_voice_info parameters */ | |
567 | if (copy_from_user(&tmpzone.v, data, sizeof(tmpzone.v))) { | |
568 | return -EFAULT; | |
569 | } | |
570 | ||
571 | data += sizeof(tmpzone.v); | |
572 | count -= sizeof(tmpzone.v); | |
573 | ||
574 | tmpzone.bank = hdr.bank; | |
575 | tmpzone.instr = hdr.instr; | |
576 | tmpzone.mapped = 0; | |
577 | tmpzone.v.sf_id = sf->id; | |
578 | if (tmpzone.v.mode & SNDRV_SFNT_MODE_INIT_PARM) | |
579 | init_voice_parm(&tmpzone.v.parm); | |
580 | ||
581 | /* create a new zone */ | |
582 | if ((zone = sf_zone_new(sflist, sf)) == NULL) { | |
583 | return -ENOMEM; | |
584 | } | |
585 | ||
586 | /* copy the temporary data */ | |
587 | zone->bank = tmpzone.bank; | |
588 | zone->instr = tmpzone.instr; | |
589 | zone->v = tmpzone.v; | |
590 | ||
591 | /* look up the sample */ | |
592 | zone->sample = set_sample(sf, &zone->v); | |
593 | } | |
594 | ||
595 | return 0; | |
596 | } | |
597 | ||
598 | ||
599 | /* initialize voice_info record */ | |
600 | static void | |
03da312a | 601 | init_voice_info(struct soundfont_voice_info *avp) |
1da177e4 LT |
602 | { |
603 | memset(avp, 0, sizeof(*avp)); | |
604 | ||
605 | avp->root = 60; | |
606 | avp->high = 127; | |
607 | avp->velhigh = 127; | |
608 | avp->fixkey = -1; | |
609 | avp->fixvel = -1; | |
610 | avp->fixpan = -1; | |
611 | avp->pan = -1; | |
612 | avp->amplitude = 127; | |
613 | avp->scaleTuning = 100; | |
614 | ||
615 | init_voice_parm(&avp->parm); | |
616 | } | |
617 | ||
618 | /* initialize voice_parm record: | |
619 | * Env1/2: delay=0, attack=0, hold=0, sustain=0, decay=0, release=0. | |
620 | * Vibrato and Tremolo effects are zero. | |
621 | * Cutoff is maximum. | |
622 | * Chorus and Reverb effects are zero. | |
623 | */ | |
624 | static void | |
03da312a | 625 | init_voice_parm(struct soundfont_voice_parm *pp) |
1da177e4 LT |
626 | { |
627 | memset(pp, 0, sizeof(*pp)); | |
628 | ||
629 | pp->moddelay = 0x8000; | |
630 | pp->modatkhld = 0x7f7f; | |
631 | pp->moddcysus = 0x7f7f; | |
632 | pp->modrelease = 0x807f; | |
633 | ||
634 | pp->voldelay = 0x8000; | |
635 | pp->volatkhld = 0x7f7f; | |
636 | pp->voldcysus = 0x7f7f; | |
637 | pp->volrelease = 0x807f; | |
638 | ||
639 | pp->lfo1delay = 0x8000; | |
640 | pp->lfo2delay = 0x8000; | |
641 | ||
642 | pp->cutoff = 0xff; | |
643 | } | |
644 | ||
645 | /* search the specified sample */ | |
03da312a TI |
646 | static struct snd_sf_sample * |
647 | set_sample(struct snd_soundfont *sf, struct soundfont_voice_info *avp) | |
1da177e4 | 648 | { |
03da312a | 649 | struct snd_sf_sample *sample; |
1da177e4 LT |
650 | |
651 | sample = find_sample(sf, avp->sample); | |
652 | if (sample == NULL) | |
653 | return NULL; | |
654 | ||
655 | /* add in the actual sample offsets: | |
656 | * The voice_info addresses define only the relative offset | |
657 | * from sample pointers. Here we calculate the actual DRAM | |
658 | * offset from sample pointers. | |
659 | */ | |
660 | avp->start += sample->v.start; | |
661 | avp->end += sample->v.end; | |
662 | avp->loopstart += sample->v.loopstart; | |
663 | avp->loopend += sample->v.loopend; | |
664 | ||
665 | /* copy mode flags */ | |
666 | avp->sample_mode = sample->v.mode_flags; | |
667 | ||
668 | return sample; | |
669 | } | |
670 | ||
671 | /* find the sample pointer with the given id in the soundfont */ | |
03da312a TI |
672 | static struct snd_sf_sample * |
673 | find_sample(struct snd_soundfont *sf, int sample_id) | |
1da177e4 | 674 | { |
03da312a | 675 | struct snd_sf_sample *p; |
1da177e4 LT |
676 | |
677 | if (sf == NULL) | |
678 | return NULL; | |
679 | ||
680 | for (p = sf->samples; p; p = p->next) { | |
681 | if (p->v.sample == sample_id) | |
682 | return p; | |
683 | } | |
684 | return NULL; | |
685 | } | |
686 | ||
687 | ||
688 | /* | |
689 | * Load sample information, this can include data to be loaded onto | |
690 | * the soundcard. It can also just be a pointer into soundcard ROM. | |
691 | * If there is data it will be written to the soundcard via the callback | |
692 | * routine. | |
693 | */ | |
694 | static int | |
03da312a | 695 | load_data(struct snd_sf_list *sflist, const void __user *data, long count) |
1da177e4 | 696 | { |
03da312a TI |
697 | struct snd_soundfont *sf; |
698 | struct soundfont_sample_info sample_info; | |
699 | struct snd_sf_sample *sp; | |
1da177e4 LT |
700 | long off; |
701 | ||
702 | /* patch must be opened */ | |
703 | if ((sf = sflist->currsf) == NULL) | |
704 | return -EINVAL; | |
705 | ||
706 | if (is_special_type(sf->type)) | |
707 | return -EINVAL; | |
708 | ||
709 | if (copy_from_user(&sample_info, data, sizeof(sample_info))) | |
710 | return -EFAULT; | |
711 | ||
712 | off = sizeof(sample_info); | |
713 | ||
714 | if (sample_info.size != (count-off)/2) | |
715 | return -EINVAL; | |
716 | ||
717 | /* Check for dup */ | |
718 | if (find_sample(sf, sample_info.sample)) { | |
719 | /* if shared sample, skip this data */ | |
720 | if (sf->type & SNDRV_SFNT_PAT_SHARED) | |
721 | return 0; | |
722 | return -EINVAL; | |
723 | } | |
724 | ||
725 | /* Allocate a new sample structure */ | |
726 | if ((sp = sf_sample_new(sflist, sf)) == NULL) | |
727 | return -ENOMEM; | |
728 | ||
729 | sp->v = sample_info; | |
730 | sp->v.sf_id = sf->id; | |
731 | sp->v.dummy = 0; | |
732 | sp->v.truesize = sp->v.size; | |
733 | ||
734 | /* | |
735 | * If there is wave data then load it. | |
736 | */ | |
737 | if (sp->v.size > 0) { | |
738 | int rc; | |
739 | rc = sflist->callback.sample_new | |
740 | (sflist->callback.private_data, sp, sflist->memhdr, | |
741 | data + off, count - off); | |
742 | if (rc < 0) { | |
743 | sf_sample_delete(sflist, sf, sp); | |
744 | return rc; | |
745 | } | |
746 | sflist->mem_used += sp->v.truesize; | |
747 | } | |
748 | ||
749 | return count; | |
750 | } | |
751 | ||
752 | ||
753 | /* log2_tbl[i] = log2(i+128) * 0x10000 */ | |
754 | static int log_tbl[129] = { | |
755 | 0x70000, 0x702df, 0x705b9, 0x7088e, 0x70b5d, 0x70e26, 0x710eb, 0x713aa, | |
756 | 0x71663, 0x71918, 0x71bc8, 0x71e72, 0x72118, 0x723b9, 0x72655, 0x728ed, | |
757 | 0x72b80, 0x72e0e, 0x73098, 0x7331d, 0x7359e, 0x7381b, 0x73a93, 0x73d08, | |
758 | 0x73f78, 0x741e4, 0x7444c, 0x746b0, 0x74910, 0x74b6c, 0x74dc4, 0x75019, | |
759 | 0x75269, 0x754b6, 0x75700, 0x75946, 0x75b88, 0x75dc7, 0x76002, 0x7623a, | |
760 | 0x7646e, 0x766a0, 0x768cd, 0x76af8, 0x76d1f, 0x76f43, 0x77164, 0x77382, | |
761 | 0x7759d, 0x777b4, 0x779c9, 0x77bdb, 0x77dea, 0x77ff5, 0x781fe, 0x78404, | |
762 | 0x78608, 0x78808, 0x78a06, 0x78c01, 0x78df9, 0x78fef, 0x791e2, 0x793d2, | |
763 | 0x795c0, 0x797ab, 0x79993, 0x79b79, 0x79d5d, 0x79f3e, 0x7a11d, 0x7a2f9, | |
764 | 0x7a4d3, 0x7a6ab, 0x7a880, 0x7aa53, 0x7ac24, 0x7adf2, 0x7afbe, 0x7b188, | |
765 | 0x7b350, 0x7b515, 0x7b6d8, 0x7b899, 0x7ba58, 0x7bc15, 0x7bdd0, 0x7bf89, | |
766 | 0x7c140, 0x7c2f5, 0x7c4a7, 0x7c658, 0x7c807, 0x7c9b3, 0x7cb5e, 0x7cd07, | |
767 | 0x7ceae, 0x7d053, 0x7d1f7, 0x7d398, 0x7d538, 0x7d6d6, 0x7d872, 0x7da0c, | |
768 | 0x7dba4, 0x7dd3b, 0x7ded0, 0x7e063, 0x7e1f4, 0x7e384, 0x7e512, 0x7e69f, | |
769 | 0x7e829, 0x7e9b3, 0x7eb3a, 0x7ecc0, 0x7ee44, 0x7efc7, 0x7f148, 0x7f2c8, | |
770 | 0x7f446, 0x7f5c2, 0x7f73d, 0x7f8b7, 0x7fa2f, 0x7fba5, 0x7fd1a, 0x7fe8d, | |
771 | 0x80000, | |
772 | }; | |
773 | ||
774 | /* convert from linear to log value | |
775 | * | |
776 | * conversion: value = log2(amount / base) * ratio | |
777 | * | |
778 | * argument: | |
779 | * amount = linear value (unsigned, 32bit max) | |
780 | * offset = base offset (:= log2(base) * 0x10000) | |
781 | * ratio = division ratio | |
782 | * | |
783 | */ | |
784 | int | |
785 | snd_sf_linear_to_log(unsigned int amount, int offset, int ratio) | |
786 | { | |
787 | int v; | |
788 | int s, low, bit; | |
789 | ||
790 | if (amount < 2) | |
791 | return 0; | |
792 | for (bit = 0; ! (amount & 0x80000000L); bit++) | |
793 | amount <<= 1; | |
794 | s = (amount >> 24) & 0x7f; | |
795 | low = (amount >> 16) & 0xff; | |
796 | /* linear approxmimation by lower 8 bit */ | |
797 | v = (log_tbl[s + 1] * low + log_tbl[s] * (0x100 - low)) >> 8; | |
798 | v -= offset; | |
799 | v = (v * ratio) >> 16; | |
800 | v += (24 - bit) * ratio; | |
801 | return v; | |
802 | } | |
803 | ||
95ff1756 TI |
804 | EXPORT_SYMBOL(snd_sf_linear_to_log); |
805 | ||
806 | ||
1da177e4 LT |
807 | #define OFFSET_MSEC 653117 /* base = 1000 */ |
808 | #define OFFSET_ABSCENT 851781 /* base = 8176 */ | |
809 | #define OFFSET_SAMPLERATE 1011119 /* base = 44100 */ | |
810 | ||
811 | #define ABSCENT_RATIO 1200 | |
812 | #define TIMECENT_RATIO 1200 | |
813 | #define SAMPLERATE_RATIO 4096 | |
814 | ||
815 | /* | |
816 | * mHz to abscent | |
817 | * conversion: abscent = log2(MHz / 8176) * 1200 | |
818 | */ | |
819 | static int | |
820 | freq_to_note(int mhz) | |
821 | { | |
822 | return snd_sf_linear_to_log(mhz, OFFSET_ABSCENT, ABSCENT_RATIO); | |
823 | } | |
824 | ||
825 | /* convert Hz to AWE32 rate offset: | |
826 | * sample pitch offset for the specified sample rate | |
827 | * rate=44100 is no offset, each 4096 is 1 octave (twice). | |
828 | * eg, when rate is 22050, this offset becomes -4096. | |
829 | * | |
830 | * conversion: offset = log2(Hz / 44100) * 4096 | |
831 | */ | |
832 | static int | |
833 | calc_rate_offset(int hz) | |
834 | { | |
835 | return snd_sf_linear_to_log(hz, OFFSET_SAMPLERATE, SAMPLERATE_RATIO); | |
836 | } | |
837 | ||
838 | ||
839 | /* calculate GUS envelope time */ | |
840 | static int | |
841 | calc_gus_envelope_time(int rate, int start, int end) | |
842 | { | |
843 | int r, p, t; | |
844 | r = (3 - ((rate >> 6) & 3)) * 3; | |
845 | p = rate & 0x3f; | |
2854cd34 DC |
846 | if (!p) |
847 | p = 1; | |
1da177e4 LT |
848 | t = end - start; |
849 | if (t < 0) t = -t; | |
850 | if (13 > r) | |
851 | t = t << (13 - r); | |
852 | else | |
853 | t = t >> (r - 13); | |
854 | return (t * 10) / (p * 441); | |
855 | } | |
856 | ||
857 | /* convert envelope time parameter to soundfont parameters */ | |
858 | ||
859 | /* attack & decay/release time table (msec) */ | |
860 | static short attack_time_tbl[128] = { | |
861 | 32767, 32767, 5989, 4235, 2994, 2518, 2117, 1780, 1497, 1373, 1259, 1154, 1058, 970, 890, 816, | |
862 | 707, 691, 662, 634, 607, 581, 557, 533, 510, 489, 468, 448, 429, 411, 393, 377, | |
863 | 361, 345, 331, 317, 303, 290, 278, 266, 255, 244, 234, 224, 214, 205, 196, 188, | |
864 | 180, 172, 165, 158, 151, 145, 139, 133, 127, 122, 117, 112, 107, 102, 98, 94, | |
865 | 90, 86, 82, 79, 75, 72, 69, 66, 63, 61, 58, 56, 53, 51, 49, 47, | |
866 | 45, 43, 41, 39, 37, 36, 34, 33, 31, 30, 29, 28, 26, 25, 24, 23, | |
867 | 22, 21, 20, 19, 19, 18, 17, 16, 16, 15, 15, 14, 13, 13, 12, 12, | |
868 | 11, 11, 10, 10, 10, 9, 9, 8, 8, 8, 8, 7, 7, 7, 6, 0, | |
869 | }; | |
870 | ||
871 | static short decay_time_tbl[128] = { | |
872 | 32767, 32767, 22614, 15990, 11307, 9508, 7995, 6723, 5653, 5184, 4754, 4359, 3997, 3665, 3361, 3082, | |
873 | 2828, 2765, 2648, 2535, 2428, 2325, 2226, 2132, 2042, 1955, 1872, 1793, 1717, 1644, 1574, 1507, | |
874 | 1443, 1382, 1324, 1267, 1214, 1162, 1113, 1066, 978, 936, 897, 859, 822, 787, 754, 722, | |
875 | 691, 662, 634, 607, 581, 557, 533, 510, 489, 468, 448, 429, 411, 393, 377, 361, | |
876 | 345, 331, 317, 303, 290, 278, 266, 255, 244, 234, 224, 214, 205, 196, 188, 180, | |
877 | 172, 165, 158, 151, 145, 139, 133, 127, 122, 117, 112, 107, 102, 98, 94, 90, | |
878 | 86, 82, 79, 75, 72, 69, 66, 63, 61, 58, 56, 53, 51, 49, 47, 45, | |
879 | 43, 41, 39, 37, 36, 34, 33, 31, 30, 29, 28, 26, 25, 24, 23, 22, | |
880 | }; | |
881 | ||
882 | /* delay time = 0x8000 - msec/92 */ | |
883 | int | |
884 | snd_sf_calc_parm_hold(int msec) | |
885 | { | |
886 | int val = (0x7f * 92 - msec) / 92; | |
887 | if (val < 1) val = 1; | |
888 | if (val >= 126) val = 126; | |
889 | return val; | |
890 | } | |
891 | ||
892 | /* search an index for specified time from given time table */ | |
893 | static int | |
894 | calc_parm_search(int msec, short *table) | |
895 | { | |
896 | int left = 1, right = 127, mid; | |
897 | while (left < right) { | |
898 | mid = (left + right) / 2; | |
899 | if (msec < (int)table[mid]) | |
900 | left = mid + 1; | |
901 | else | |
902 | right = mid; | |
903 | } | |
904 | return left; | |
905 | } | |
906 | ||
907 | /* attack time: search from time table */ | |
908 | int | |
909 | snd_sf_calc_parm_attack(int msec) | |
910 | { | |
911 | return calc_parm_search(msec, attack_time_tbl); | |
912 | } | |
913 | ||
914 | /* decay/release time: search from time table */ | |
915 | int | |
916 | snd_sf_calc_parm_decay(int msec) | |
917 | { | |
918 | return calc_parm_search(msec, decay_time_tbl); | |
919 | } | |
920 | ||
921 | int snd_sf_vol_table[128] = { | |
922 | 255,111,95,86,79,74,70,66,63,61,58,56,54,52,50,49, | |
923 | 47,46,45,43,42,41,40,39,38,37,36,35,34,34,33,32, | |
924 | 31,31,30,29,29,28,27,27,26,26,25,24,24,23,23,22, | |
925 | 22,21,21,21,20,20,19,19,18,18,18,17,17,16,16,16, | |
926 | 15,15,15,14,14,14,13,13,13,12,12,12,11,11,11,10, | |
927 | 10,10,10,9,9,9,8,8,8,8,7,7,7,7,6,6, | |
928 | 6,6,5,5,5,5,5,4,4,4,4,3,3,3,3,3, | |
929 | 2,2,2,2,2,1,1,1,1,1,0,0,0,0,0,0, | |
930 | }; | |
931 | ||
932 | ||
933 | #define calc_gus_sustain(val) (0x7f - snd_sf_vol_table[(val)/2]) | |
934 | #define calc_gus_attenuation(val) snd_sf_vol_table[(val)/2] | |
935 | ||
936 | /* load GUS patch */ | |
937 | static int | |
03da312a TI |
938 | load_guspatch(struct snd_sf_list *sflist, const char __user *data, |
939 | long count, int client) | |
1da177e4 LT |
940 | { |
941 | struct patch_info patch; | |
03da312a TI |
942 | struct snd_soundfont *sf; |
943 | struct snd_sf_zone *zone; | |
944 | struct snd_sf_sample *smp; | |
1da177e4 LT |
945 | int note, sample_id; |
946 | int rc; | |
947 | ||
948 | if (count < (long)sizeof(patch)) { | |
42b0158b | 949 | snd_printk(KERN_ERR "patch record too small %ld\n", count); |
1da177e4 LT |
950 | return -EINVAL; |
951 | } | |
952 | if (copy_from_user(&patch, data, sizeof(patch))) | |
953 | return -EFAULT; | |
954 | ||
955 | count -= sizeof(patch); | |
956 | data += sizeof(patch); | |
957 | ||
958 | sf = newsf(sflist, SNDRV_SFNT_PAT_TYPE_GUS|SNDRV_SFNT_PAT_SHARED, NULL); | |
959 | if (sf == NULL) | |
960 | return -ENOMEM; | |
961 | if ((smp = sf_sample_new(sflist, sf)) == NULL) | |
962 | return -ENOMEM; | |
963 | sample_id = sflist->sample_counter; | |
964 | smp->v.sample = sample_id; | |
965 | smp->v.start = 0; | |
966 | smp->v.end = patch.len; | |
967 | smp->v.loopstart = patch.loop_start; | |
968 | smp->v.loopend = patch.loop_end; | |
969 | smp->v.size = patch.len; | |
970 | ||
971 | /* set up mode flags */ | |
972 | smp->v.mode_flags = 0; | |
973 | if (!(patch.mode & WAVE_16_BITS)) | |
974 | smp->v.mode_flags |= SNDRV_SFNT_SAMPLE_8BITS; | |
975 | if (patch.mode & WAVE_UNSIGNED) | |
976 | smp->v.mode_flags |= SNDRV_SFNT_SAMPLE_UNSIGNED; | |
977 | smp->v.mode_flags |= SNDRV_SFNT_SAMPLE_NO_BLANK; | |
978 | if (!(patch.mode & (WAVE_LOOPING|WAVE_BIDIR_LOOP|WAVE_LOOP_BACK))) | |
979 | smp->v.mode_flags |= SNDRV_SFNT_SAMPLE_SINGLESHOT; | |
980 | if (patch.mode & WAVE_BIDIR_LOOP) | |
981 | smp->v.mode_flags |= SNDRV_SFNT_SAMPLE_BIDIR_LOOP; | |
982 | if (patch.mode & WAVE_LOOP_BACK) | |
983 | smp->v.mode_flags |= SNDRV_SFNT_SAMPLE_REVERSE_LOOP; | |
984 | ||
985 | if (patch.mode & WAVE_16_BITS) { | |
986 | /* convert to word offsets */ | |
987 | smp->v.size /= 2; | |
988 | smp->v.end /= 2; | |
989 | smp->v.loopstart /= 2; | |
990 | smp->v.loopend /= 2; | |
991 | } | |
992 | /*smp->v.loopend++;*/ | |
993 | ||
994 | smp->v.dummy = 0; | |
995 | smp->v.truesize = 0; | |
996 | smp->v.sf_id = sf->id; | |
997 | ||
998 | /* set up voice info */ | |
999 | if ((zone = sf_zone_new(sflist, sf)) == NULL) { | |
1000 | sf_sample_delete(sflist, sf, smp); | |
1001 | return -ENOMEM; | |
1002 | } | |
1003 | ||
1004 | /* | |
1005 | * load wave data | |
1006 | */ | |
1007 | if (sflist->callback.sample_new) { | |
1008 | rc = sflist->callback.sample_new | |
03da312a TI |
1009 | (sflist->callback.private_data, smp, sflist->memhdr, |
1010 | data, count); | |
1da177e4 LT |
1011 | if (rc < 0) { |
1012 | sf_sample_delete(sflist, sf, smp); | |
14577c25 | 1013 | kfree(zone); |
1da177e4 LT |
1014 | return rc; |
1015 | } | |
1016 | /* memory offset is updated after */ | |
1017 | } | |
1018 | ||
1019 | /* update the memory offset here */ | |
1020 | sflist->mem_used += smp->v.truesize; | |
1021 | ||
1022 | zone->v.sample = sample_id; /* the last sample */ | |
1023 | zone->v.rate_offset = calc_rate_offset(patch.base_freq); | |
1024 | note = freq_to_note(patch.base_note); | |
1025 | zone->v.root = note / 100; | |
1026 | zone->v.tune = -(note % 100); | |
1027 | zone->v.low = (freq_to_note(patch.low_note) + 99) / 100; | |
1028 | zone->v.high = freq_to_note(patch.high_note) / 100; | |
1029 | /* panning position; -128 - 127 => 0-127 */ | |
1030 | zone->v.pan = (patch.panning + 128) / 2; | |
1031 | #if 0 | |
42b0158b TI |
1032 | snd_printk(KERN_DEBUG |
1033 | "gus: basefrq=%d (ofs=%d) root=%d,tune=%d, range:%d-%d\n", | |
1da177e4 LT |
1034 | (int)patch.base_freq, zone->v.rate_offset, |
1035 | zone->v.root, zone->v.tune, zone->v.low, zone->v.high); | |
1036 | #endif | |
1037 | ||
1038 | /* detuning is ignored */ | |
1039 | /* 6points volume envelope */ | |
1040 | if (patch.mode & WAVE_ENVELOPES) { | |
1041 | int attack, hold, decay, release; | |
1042 | attack = calc_gus_envelope_time | |
1043 | (patch.env_rate[0], 0, patch.env_offset[0]); | |
1044 | hold = calc_gus_envelope_time | |
1045 | (patch.env_rate[1], patch.env_offset[0], | |
1046 | patch.env_offset[1]); | |
1047 | decay = calc_gus_envelope_time | |
1048 | (patch.env_rate[2], patch.env_offset[1], | |
1049 | patch.env_offset[2]); | |
1050 | release = calc_gus_envelope_time | |
1051 | (patch.env_rate[3], patch.env_offset[1], | |
1052 | patch.env_offset[4]); | |
1053 | release += calc_gus_envelope_time | |
1054 | (patch.env_rate[4], patch.env_offset[3], | |
1055 | patch.env_offset[4]); | |
1056 | release += calc_gus_envelope_time | |
1057 | (patch.env_rate[5], patch.env_offset[4], | |
1058 | patch.env_offset[5]); | |
1059 | zone->v.parm.volatkhld = | |
1060 | (snd_sf_calc_parm_hold(hold) << 8) | | |
1061 | snd_sf_calc_parm_attack(attack); | |
1062 | zone->v.parm.voldcysus = (calc_gus_sustain(patch.env_offset[2]) << 8) | | |
1063 | snd_sf_calc_parm_decay(decay); | |
1064 | zone->v.parm.volrelease = 0x8000 | snd_sf_calc_parm_decay(release); | |
1065 | zone->v.attenuation = calc_gus_attenuation(patch.env_offset[0]); | |
1066 | #if 0 | |
42b0158b TI |
1067 | snd_printk(KERN_DEBUG |
1068 | "gus: atkhld=%x, dcysus=%x, volrel=%x, att=%d\n", | |
1da177e4 LT |
1069 | zone->v.parm.volatkhld, |
1070 | zone->v.parm.voldcysus, | |
1071 | zone->v.parm.volrelease, | |
1072 | zone->v.attenuation); | |
1073 | #endif | |
1074 | } | |
1075 | ||
1076 | /* fast release */ | |
1077 | if (patch.mode & WAVE_FAST_RELEASE) { | |
1078 | zone->v.parm.volrelease = 0x807f; | |
1079 | } | |
1080 | ||
1081 | /* tremolo effect */ | |
1082 | if (patch.mode & WAVE_TREMOLO) { | |
1083 | int rate = (patch.tremolo_rate * 1000 / 38) / 42; | |
1084 | zone->v.parm.tremfrq = ((patch.tremolo_depth / 2) << 8) | rate; | |
1085 | } | |
1086 | /* vibrato effect */ | |
1087 | if (patch.mode & WAVE_VIBRATO) { | |
1088 | int rate = (patch.vibrato_rate * 1000 / 38) / 42; | |
1089 | zone->v.parm.fm2frq2 = ((patch.vibrato_depth / 6) << 8) | rate; | |
1090 | } | |
1091 | ||
1092 | /* scale_freq, scale_factor, volume, and fractions not implemented */ | |
1093 | ||
1094 | if (!(smp->v.mode_flags & SNDRV_SFNT_SAMPLE_SINGLESHOT)) | |
1095 | zone->v.mode = SNDRV_SFNT_MODE_LOOPING; | |
1096 | else | |
1097 | zone->v.mode = 0; | |
1098 | ||
1099 | /* append to the tail of the list */ | |
1100 | /*zone->bank = ctrls[AWE_MD_GUS_BANK];*/ | |
1101 | zone->bank = 0; | |
1102 | zone->instr = patch.instr_no; | |
1103 | zone->mapped = 0; | |
1104 | zone->v.sf_id = sf->id; | |
1105 | ||
1106 | zone->sample = set_sample(sf, &zone->v); | |
1107 | ||
1108 | /* rebuild preset now */ | |
1109 | add_preset(sflist, zone); | |
1110 | ||
1111 | return 0; | |
1112 | } | |
1113 | ||
1114 | /* load GUS patch */ | |
1115 | int | |
03da312a | 1116 | snd_soundfont_load_guspatch(struct snd_sf_list *sflist, const char __user *data, |
1da177e4 LT |
1117 | long count, int client) |
1118 | { | |
1119 | int rc; | |
1120 | lock_preset(sflist); | |
1121 | rc = load_guspatch(sflist, data, count, client); | |
1122 | unlock_preset(sflist); | |
1123 | return rc; | |
1124 | } | |
1125 | ||
1126 | ||
1127 | /* | |
1128 | * Rebuild the preset table. This is like a hash table in that it allows | |
1129 | * quick access to the zone information. For each preset there are zone | |
1130 | * structures linked by next_instr and by next_zone. Former is the whole | |
1131 | * link for this preset, and latter is the link for zone (i.e. instrument/ | |
1132 | * bank/key combination). | |
1133 | */ | |
1134 | static void | |
03da312a | 1135 | rebuild_presets(struct snd_sf_list *sflist) |
1da177e4 | 1136 | { |
03da312a TI |
1137 | struct snd_soundfont *sf; |
1138 | struct snd_sf_zone *cur; | |
1da177e4 LT |
1139 | |
1140 | /* clear preset table */ | |
1141 | memset(sflist->presets, 0, sizeof(sflist->presets)); | |
1142 | ||
1143 | /* search all fonts and insert each font */ | |
1144 | for (sf = sflist->fonts; sf; sf = sf->next) { | |
1145 | for (cur = sf->zones; cur; cur = cur->next) { | |
1146 | if (! cur->mapped && cur->sample == NULL) { | |
1147 | /* try again to search the corresponding sample */ | |
1148 | cur->sample = set_sample(sf, &cur->v); | |
1149 | if (cur->sample == NULL) | |
1150 | continue; | |
1151 | } | |
1152 | ||
1153 | add_preset(sflist, cur); | |
1154 | } | |
1155 | } | |
1156 | } | |
1157 | ||
1158 | ||
1159 | /* | |
1160 | * add the given zone to preset table | |
1161 | */ | |
1162 | static void | |
03da312a | 1163 | add_preset(struct snd_sf_list *sflist, struct snd_sf_zone *cur) |
1da177e4 | 1164 | { |
03da312a | 1165 | struct snd_sf_zone *zone; |
1da177e4 LT |
1166 | int index; |
1167 | ||
1168 | zone = search_first_zone(sflist, cur->bank, cur->instr, cur->v.low); | |
1169 | if (zone && zone->v.sf_id != cur->v.sf_id) { | |
1170 | /* different instrument was already defined */ | |
03da312a | 1171 | struct snd_sf_zone *p; |
1da177e4 LT |
1172 | /* compare the allocated time */ |
1173 | for (p = zone; p; p = p->next_zone) { | |
1174 | if (p->counter > cur->counter) | |
1175 | /* the current is older.. skipped */ | |
1176 | return; | |
1177 | } | |
1178 | /* remove old zones */ | |
1179 | delete_preset(sflist, zone); | |
1180 | zone = NULL; /* do not forget to clear this! */ | |
1181 | } | |
1182 | ||
1183 | /* prepend this zone */ | |
1184 | if ((index = get_index(cur->bank, cur->instr, cur->v.low)) < 0) | |
1185 | return; | |
1186 | cur->next_zone = zone; /* zone link */ | |
1187 | cur->next_instr = sflist->presets[index]; /* preset table link */ | |
1188 | sflist->presets[index] = cur; | |
1189 | } | |
1190 | ||
1191 | /* | |
1192 | * delete the given zones from preset_table | |
1193 | */ | |
1194 | static void | |
03da312a | 1195 | delete_preset(struct snd_sf_list *sflist, struct snd_sf_zone *zp) |
1da177e4 LT |
1196 | { |
1197 | int index; | |
03da312a | 1198 | struct snd_sf_zone *p; |
1da177e4 LT |
1199 | |
1200 | if ((index = get_index(zp->bank, zp->instr, zp->v.low)) < 0) | |
1201 | return; | |
1202 | for (p = sflist->presets[index]; p; p = p->next_instr) { | |
1203 | while (p->next_instr == zp) { | |
1204 | p->next_instr = zp->next_instr; | |
1205 | zp = zp->next_zone; | |
1206 | if (zp == NULL) | |
1207 | return; | |
1208 | } | |
1209 | } | |
1210 | } | |
1211 | ||
1212 | ||
1213 | /* | |
1214 | * Search matching zones from preset table. | |
1215 | * The note can be rewritten by preset mapping (alias). | |
1216 | * The found zones are stored on 'table' array. max_layers defines | |
1217 | * the maximum number of elements in this array. | |
1218 | * This function returns the number of found zones. 0 if not found. | |
1219 | */ | |
1220 | int | |
03da312a | 1221 | snd_soundfont_search_zone(struct snd_sf_list *sflist, int *notep, int vel, |
1da177e4 LT |
1222 | int preset, int bank, |
1223 | int def_preset, int def_bank, | |
03da312a | 1224 | struct snd_sf_zone **table, int max_layers) |
1da177e4 LT |
1225 | { |
1226 | int nvoices; | |
1227 | unsigned long flags; | |
1228 | ||
1229 | /* this function is supposed to be called atomically, | |
1230 | * so we check the lock. if it's busy, just returns 0 to | |
1231 | * tell the caller the busy state | |
1232 | */ | |
1233 | spin_lock_irqsave(&sflist->lock, flags); | |
1234 | if (sflist->presets_locked) { | |
1235 | spin_unlock_irqrestore(&sflist->lock, flags); | |
1236 | return 0; | |
1237 | } | |
03da312a TI |
1238 | nvoices = search_zones(sflist, notep, vel, preset, bank, |
1239 | table, max_layers, 0); | |
1da177e4 LT |
1240 | if (! nvoices) { |
1241 | if (preset != def_preset || bank != def_bank) | |
03da312a TI |
1242 | nvoices = search_zones(sflist, notep, vel, |
1243 | def_preset, def_bank, | |
1244 | table, max_layers, 0); | |
1da177e4 LT |
1245 | } |
1246 | spin_unlock_irqrestore(&sflist->lock, flags); | |
1247 | return nvoices; | |
1248 | } | |
1249 | ||
1250 | ||
1251 | /* | |
1252 | * search the first matching zone | |
1253 | */ | |
03da312a TI |
1254 | static struct snd_sf_zone * |
1255 | search_first_zone(struct snd_sf_list *sflist, int bank, int preset, int key) | |
1da177e4 LT |
1256 | { |
1257 | int index; | |
03da312a | 1258 | struct snd_sf_zone *zp; |
1da177e4 LT |
1259 | |
1260 | if ((index = get_index(bank, preset, key)) < 0) | |
1261 | return NULL; | |
1262 | for (zp = sflist->presets[index]; zp; zp = zp->next_instr) { | |
1263 | if (zp->instr == preset && zp->bank == bank) | |
1264 | return zp; | |
1265 | } | |
1266 | return NULL; | |
1267 | } | |
1268 | ||
1269 | ||
1270 | /* | |
1271 | * search matching zones from sflist. can be called recursively. | |
1272 | */ | |
1273 | static int | |
03da312a TI |
1274 | search_zones(struct snd_sf_list *sflist, int *notep, int vel, |
1275 | int preset, int bank, struct snd_sf_zone **table, | |
1276 | int max_layers, int level) | |
1da177e4 | 1277 | { |
03da312a | 1278 | struct snd_sf_zone *zp; |
1da177e4 LT |
1279 | int nvoices; |
1280 | ||
1281 | zp = search_first_zone(sflist, bank, preset, *notep); | |
1282 | nvoices = 0; | |
1283 | for (; zp; zp = zp->next_zone) { | |
1284 | if (*notep >= zp->v.low && *notep <= zp->v.high && | |
1285 | vel >= zp->v.vellow && vel <= zp->v.velhigh) { | |
1286 | if (zp->mapped) { | |
1287 | /* search preset mapping (aliasing) */ | |
1288 | int key = zp->v.fixkey; | |
1289 | preset = zp->v.start; | |
1290 | bank = zp->v.end; | |
1291 | ||
1292 | if (level > 5) /* too deep alias level */ | |
1293 | return 0; | |
1294 | if (key < 0) | |
1295 | key = *notep; | |
1296 | nvoices = search_zones(sflist, &key, vel, | |
1297 | preset, bank, table, | |
1298 | max_layers, level + 1); | |
1299 | if (nvoices > 0) | |
1300 | *notep = key; | |
1301 | break; | |
1302 | } | |
1303 | table[nvoices++] = zp; | |
1304 | if (nvoices >= max_layers) | |
1305 | break; | |
1306 | } | |
1307 | } | |
1308 | ||
1309 | return nvoices; | |
1310 | } | |
1311 | ||
1312 | ||
1313 | /* calculate the index of preset table: | |
1314 | * drums are mapped from 128 to 255 according to its note key. | |
1315 | * other instruments are mapped from 0 to 127. | |
1316 | * if the index is out of range, return -1. | |
1317 | */ | |
1318 | static int | |
1319 | get_index(int bank, int instr, int key) | |
1320 | { | |
1321 | int index; | |
1322 | if (SF_IS_DRUM_BANK(bank)) | |
1323 | index = key + SF_MAX_INSTRUMENTS; | |
1324 | else | |
1325 | index = instr; | |
1326 | index = index % SF_MAX_PRESETS; | |
1327 | if (index < 0) | |
1328 | return -1; | |
1329 | return index; | |
1330 | } | |
1331 | ||
1332 | /* | |
1333 | * Initialise the sflist structure. | |
1334 | */ | |
1335 | static void | |
03da312a | 1336 | snd_sf_init(struct snd_sf_list *sflist) |
1da177e4 LT |
1337 | { |
1338 | memset(sflist->presets, 0, sizeof(sflist->presets)); | |
1339 | ||
1340 | sflist->mem_used = 0; | |
1341 | sflist->currsf = NULL; | |
1342 | sflist->open_client = -1; | |
1343 | sflist->fonts = NULL; | |
1344 | sflist->fonts_size = 0; | |
1345 | sflist->zone_counter = 0; | |
1346 | sflist->sample_counter = 0; | |
1347 | sflist->zone_locked = 0; | |
1348 | sflist->sample_locked = 0; | |
1349 | } | |
1350 | ||
1351 | /* | |
1352 | * Release all list records | |
1353 | */ | |
1354 | static void | |
03da312a | 1355 | snd_sf_clear(struct snd_sf_list *sflist) |
1da177e4 | 1356 | { |
03da312a TI |
1357 | struct snd_soundfont *sf, *nextsf; |
1358 | struct snd_sf_zone *zp, *nextzp; | |
1359 | struct snd_sf_sample *sp, *nextsp; | |
1da177e4 LT |
1360 | |
1361 | for (sf = sflist->fonts; sf; sf = nextsf) { | |
1362 | nextsf = sf->next; | |
1363 | for (zp = sf->zones; zp; zp = nextzp) { | |
1364 | nextzp = zp->next; | |
1365 | kfree(zp); | |
1366 | } | |
1367 | for (sp = sf->samples; sp; sp = nextsp) { | |
1368 | nextsp = sp->next; | |
1369 | if (sflist->callback.sample_free) | |
03da312a TI |
1370 | sflist->callback.sample_free(sflist->callback.private_data, |
1371 | sp, sflist->memhdr); | |
1da177e4 LT |
1372 | kfree(sp); |
1373 | } | |
1374 | kfree(sf); | |
1375 | } | |
1376 | ||
1377 | snd_sf_init(sflist); | |
1378 | } | |
1379 | ||
1380 | ||
1381 | /* | |
1382 | * Create a new sflist structure | |
1383 | */ | |
03da312a TI |
1384 | struct snd_sf_list * |
1385 | snd_sf_new(struct snd_sf_callback *callback, struct snd_util_memhdr *hdr) | |
1da177e4 | 1386 | { |
03da312a | 1387 | struct snd_sf_list *sflist; |
1da177e4 | 1388 | |
561b220a | 1389 | if ((sflist = kzalloc(sizeof(*sflist), GFP_KERNEL)) == NULL) |
1da177e4 LT |
1390 | return NULL; |
1391 | ||
ef9f0a42 | 1392 | mutex_init(&sflist->presets_mutex); |
1da177e4 LT |
1393 | spin_lock_init(&sflist->lock); |
1394 | sflist->memhdr = hdr; | |
1395 | ||
1396 | if (callback) | |
1397 | sflist->callback = *callback; | |
1398 | ||
1399 | snd_sf_init(sflist); | |
1400 | return sflist; | |
1401 | } | |
1402 | ||
1403 | ||
1404 | /* | |
1405 | * Free everything allocated off the sflist structure. | |
1406 | */ | |
1407 | void | |
03da312a | 1408 | snd_sf_free(struct snd_sf_list *sflist) |
1da177e4 LT |
1409 | { |
1410 | if (sflist == NULL) | |
1411 | return; | |
1412 | ||
1413 | lock_preset(sflist); | |
1414 | if (sflist->callback.sample_reset) | |
1415 | sflist->callback.sample_reset(sflist->callback.private_data); | |
1416 | snd_sf_clear(sflist); | |
1417 | unlock_preset(sflist); | |
1418 | ||
1419 | kfree(sflist); | |
1420 | } | |
1421 | ||
1422 | /* | |
1423 | * Remove all samples | |
1424 | * The soundcard should be silet before calling this function. | |
1425 | */ | |
1426 | int | |
03da312a | 1427 | snd_soundfont_remove_samples(struct snd_sf_list *sflist) |
1da177e4 LT |
1428 | { |
1429 | lock_preset(sflist); | |
1430 | if (sflist->callback.sample_reset) | |
1431 | sflist->callback.sample_reset(sflist->callback.private_data); | |
1432 | snd_sf_clear(sflist); | |
1433 | unlock_preset(sflist); | |
1434 | ||
1435 | return 0; | |
1436 | } | |
1437 | ||
1438 | /* | |
1439 | * Remove unlocked samples. | |
1440 | * The soundcard should be silent before calling this function. | |
1441 | */ | |
1442 | int | |
03da312a | 1443 | snd_soundfont_remove_unlocked(struct snd_sf_list *sflist) |
1da177e4 | 1444 | { |
03da312a TI |
1445 | struct snd_soundfont *sf; |
1446 | struct snd_sf_zone *zp, *nextzp; | |
1447 | struct snd_sf_sample *sp, *nextsp; | |
1da177e4 LT |
1448 | |
1449 | lock_preset(sflist); | |
1450 | ||
1451 | if (sflist->callback.sample_reset) | |
1452 | sflist->callback.sample_reset(sflist->callback.private_data); | |
1453 | ||
1454 | /* to be sure */ | |
1455 | memset(sflist->presets, 0, sizeof(sflist->presets)); | |
1456 | ||
1457 | for (sf = sflist->fonts; sf; sf = sf->next) { | |
1458 | for (zp = sf->zones; zp; zp = nextzp) { | |
1459 | if (zp->counter < sflist->zone_locked) | |
1460 | break; | |
1461 | nextzp = zp->next; | |
1462 | sf->zones = nextzp; | |
1463 | kfree(zp); | |
1464 | } | |
1465 | ||
1466 | for (sp = sf->samples; sp; sp = nextsp) { | |
1467 | if (sp->counter < sflist->sample_locked) | |
1468 | break; | |
1469 | nextsp = sp->next; | |
1470 | sf->samples = nextsp; | |
1471 | sflist->mem_used -= sp->v.truesize; | |
1472 | if (sflist->callback.sample_free) | |
03da312a TI |
1473 | sflist->callback.sample_free(sflist->callback.private_data, |
1474 | sp, sflist->memhdr); | |
1da177e4 LT |
1475 | kfree(sp); |
1476 | } | |
1477 | } | |
1478 | ||
1479 | sflist->zone_counter = sflist->zone_locked; | |
1480 | sflist->sample_counter = sflist->sample_locked; | |
1481 | ||
1482 | rebuild_presets(sflist); | |
1483 | ||
1484 | unlock_preset(sflist); | |
1485 | return 0; | |
1486 | } |