Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Digital Audio (PCM) abstract layer / OSS compatible |
| 3 | * Copyright (c) by Jaroslav Kysela <perex@suse.cz> |
| 4 | * |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU General Public License as published by |
| 8 | * the Free Software Foundation; either version 2 of the License, or |
| 9 | * (at your option) any later version. |
| 10 | * |
| 11 | * This program is distributed in the hope that it will be useful, |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | * GNU General Public License for more details. |
| 15 | * |
| 16 | * You should have received a copy of the GNU General Public License |
| 17 | * along with this program; if not, write to the Free Software |
| 18 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 19 | * |
| 20 | */ |
| 21 | |
| 22 | #if 0 |
| 23 | #define PLUGIN_DEBUG |
| 24 | #endif |
| 25 | #if 0 |
| 26 | #define OSS_DEBUG |
| 27 | #endif |
| 28 | |
| 29 | #include <sound/driver.h> |
| 30 | #include <linux/init.h> |
| 31 | #include <linux/smp_lock.h> |
| 32 | #include <linux/slab.h> |
| 33 | #include <linux/time.h> |
| 34 | #include <linux/vmalloc.h> |
| 35 | #include <linux/moduleparam.h> |
Paulo Marques | 543537b | 2005-06-23 00:09:02 -0700 | [diff] [blame] | 36 | #include <linux/string.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 37 | #include <sound/core.h> |
| 38 | #include <sound/minors.h> |
| 39 | #include <sound/pcm.h> |
| 40 | #include <sound/pcm_params.h> |
| 41 | #include "pcm_plugin.h" |
| 42 | #include <sound/info.h> |
| 43 | #include <linux/soundcard.h> |
| 44 | #include <sound/initval.h> |
| 45 | |
| 46 | #define OSS_ALSAEMULVER _SIOR ('M', 249, int) |
| 47 | |
Takashi Iwai | 6581f4e | 2006-05-17 17:14:51 +0200 | [diff] [blame] | 48 | static int dsp_map[SNDRV_CARDS]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 49 | static int adsp_map[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS-1)] = 1}; |
| 50 | static int nonblock_open = 1; |
| 51 | |
| 52 | MODULE_AUTHOR("Jaroslav Kysela <perex@suse.cz>, Abramo Bagnara <abramo@alsa-project.org>"); |
| 53 | MODULE_DESCRIPTION("PCM OSS emulation for ALSA."); |
| 54 | MODULE_LICENSE("GPL"); |
| 55 | module_param_array(dsp_map, int, NULL, 0444); |
| 56 | MODULE_PARM_DESC(dsp_map, "PCM device number assigned to 1st OSS device."); |
| 57 | module_param_array(adsp_map, int, NULL, 0444); |
| 58 | MODULE_PARM_DESC(adsp_map, "PCM device number assigned to 2nd OSS device."); |
| 59 | module_param(nonblock_open, bool, 0644); |
| 60 | MODULE_PARM_DESC(nonblock_open, "Don't block opening busy PCM devices."); |
| 61 | MODULE_ALIAS_SNDRV_MINOR(SNDRV_MINOR_OSS_PCM); |
| 62 | MODULE_ALIAS_SNDRV_MINOR(SNDRV_MINOR_OSS_PCM1); |
| 63 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 64 | extern int snd_mixer_oss_ioctl_card(struct snd_card *card, unsigned int cmd, unsigned long arg); |
| 65 | static int snd_pcm_oss_get_rate(struct snd_pcm_oss_file *pcm_oss_file); |
| 66 | static int snd_pcm_oss_get_channels(struct snd_pcm_oss_file *pcm_oss_file); |
| 67 | static int snd_pcm_oss_get_format(struct snd_pcm_oss_file *pcm_oss_file); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 68 | |
| 69 | static inline mm_segment_t snd_enter_user(void) |
| 70 | { |
| 71 | mm_segment_t fs = get_fs(); |
| 72 | set_fs(get_ds()); |
| 73 | return fs; |
| 74 | } |
| 75 | |
| 76 | static inline void snd_leave_user(mm_segment_t fs) |
| 77 | { |
| 78 | set_fs(fs); |
| 79 | } |
| 80 | |
Takashi Iwai | e88e8ae6 | 2006-04-28 15:13:40 +0200 | [diff] [blame] | 81 | /* |
| 82 | * helper functions to process hw_params |
| 83 | */ |
| 84 | static int snd_interval_refine_min(struct snd_interval *i, unsigned int min, int openmin) |
| 85 | { |
| 86 | int changed = 0; |
| 87 | if (i->min < min) { |
| 88 | i->min = min; |
| 89 | i->openmin = openmin; |
| 90 | changed = 1; |
| 91 | } else if (i->min == min && !i->openmin && openmin) { |
| 92 | i->openmin = 1; |
| 93 | changed = 1; |
| 94 | } |
| 95 | if (i->integer) { |
| 96 | if (i->openmin) { |
| 97 | i->min++; |
| 98 | i->openmin = 0; |
| 99 | } |
| 100 | } |
| 101 | if (snd_interval_checkempty(i)) { |
| 102 | snd_interval_none(i); |
| 103 | return -EINVAL; |
| 104 | } |
| 105 | return changed; |
| 106 | } |
| 107 | |
| 108 | static int snd_interval_refine_max(struct snd_interval *i, unsigned int max, int openmax) |
| 109 | { |
| 110 | int changed = 0; |
| 111 | if (i->max > max) { |
| 112 | i->max = max; |
| 113 | i->openmax = openmax; |
| 114 | changed = 1; |
| 115 | } else if (i->max == max && !i->openmax && openmax) { |
| 116 | i->openmax = 1; |
| 117 | changed = 1; |
| 118 | } |
| 119 | if (i->integer) { |
| 120 | if (i->openmax) { |
| 121 | i->max--; |
| 122 | i->openmax = 0; |
| 123 | } |
| 124 | } |
| 125 | if (snd_interval_checkempty(i)) { |
| 126 | snd_interval_none(i); |
| 127 | return -EINVAL; |
| 128 | } |
| 129 | return changed; |
| 130 | } |
| 131 | |
| 132 | static int snd_interval_refine_set(struct snd_interval *i, unsigned int val) |
| 133 | { |
| 134 | struct snd_interval t; |
| 135 | t.empty = 0; |
| 136 | t.min = t.max = val; |
| 137 | t.openmin = t.openmax = 0; |
| 138 | t.integer = 1; |
| 139 | return snd_interval_refine(i, &t); |
| 140 | } |
| 141 | |
| 142 | /** |
| 143 | * snd_pcm_hw_param_value_min |
| 144 | * @params: the hw_params instance |
| 145 | * @var: parameter to retrieve |
| 146 | * @dir: pointer to the direction (-1,0,1) or NULL |
| 147 | * |
| 148 | * Return the minimum value for field PAR. |
| 149 | */ |
| 150 | static unsigned int |
| 151 | snd_pcm_hw_param_value_min(const struct snd_pcm_hw_params *params, |
| 152 | snd_pcm_hw_param_t var, int *dir) |
| 153 | { |
| 154 | if (hw_is_mask(var)) { |
| 155 | if (dir) |
| 156 | *dir = 0; |
| 157 | return snd_mask_min(hw_param_mask_c(params, var)); |
| 158 | } |
| 159 | if (hw_is_interval(var)) { |
| 160 | const struct snd_interval *i = hw_param_interval_c(params, var); |
| 161 | if (dir) |
| 162 | *dir = i->openmin; |
| 163 | return snd_interval_min(i); |
| 164 | } |
| 165 | return -EINVAL; |
| 166 | } |
| 167 | |
| 168 | /** |
| 169 | * snd_pcm_hw_param_value_max |
| 170 | * @params: the hw_params instance |
| 171 | * @var: parameter to retrieve |
| 172 | * @dir: pointer to the direction (-1,0,1) or NULL |
| 173 | * |
| 174 | * Return the maximum value for field PAR. |
| 175 | */ |
| 176 | static unsigned int |
| 177 | snd_pcm_hw_param_value_max(const struct snd_pcm_hw_params *params, |
| 178 | snd_pcm_hw_param_t var, int *dir) |
| 179 | { |
| 180 | if (hw_is_mask(var)) { |
| 181 | if (dir) |
| 182 | *dir = 0; |
| 183 | return snd_mask_max(hw_param_mask_c(params, var)); |
| 184 | } |
| 185 | if (hw_is_interval(var)) { |
| 186 | const struct snd_interval *i = hw_param_interval_c(params, var); |
| 187 | if (dir) |
| 188 | *dir = - (int) i->openmax; |
| 189 | return snd_interval_max(i); |
| 190 | } |
| 191 | return -EINVAL; |
| 192 | } |
| 193 | |
| 194 | static int _snd_pcm_hw_param_mask(struct snd_pcm_hw_params *params, |
| 195 | snd_pcm_hw_param_t var, |
| 196 | const struct snd_mask *val) |
| 197 | { |
| 198 | int changed; |
| 199 | changed = snd_mask_refine(hw_param_mask(params, var), val); |
| 200 | if (changed) { |
| 201 | params->cmask |= 1 << var; |
| 202 | params->rmask |= 1 << var; |
| 203 | } |
| 204 | return changed; |
| 205 | } |
| 206 | |
| 207 | static int snd_pcm_hw_param_mask(struct snd_pcm_substream *pcm, |
| 208 | struct snd_pcm_hw_params *params, |
| 209 | snd_pcm_hw_param_t var, |
| 210 | const struct snd_mask *val) |
| 211 | { |
| 212 | int changed = _snd_pcm_hw_param_mask(params, var, val); |
| 213 | if (changed < 0) |
| 214 | return changed; |
| 215 | if (params->rmask) { |
| 216 | int err = snd_pcm_hw_refine(pcm, params); |
| 217 | if (err < 0) |
| 218 | return err; |
| 219 | } |
| 220 | return 0; |
| 221 | } |
| 222 | |
| 223 | static int _snd_pcm_hw_param_min(struct snd_pcm_hw_params *params, |
| 224 | snd_pcm_hw_param_t var, unsigned int val, |
| 225 | int dir) |
| 226 | { |
| 227 | int changed; |
| 228 | int open = 0; |
| 229 | if (dir) { |
| 230 | if (dir > 0) { |
| 231 | open = 1; |
| 232 | } else if (dir < 0) { |
| 233 | if (val > 0) { |
| 234 | open = 1; |
| 235 | val--; |
| 236 | } |
| 237 | } |
| 238 | } |
| 239 | if (hw_is_mask(var)) |
| 240 | changed = snd_mask_refine_min(hw_param_mask(params, var), |
| 241 | val + !!open); |
| 242 | else if (hw_is_interval(var)) |
| 243 | changed = snd_interval_refine_min(hw_param_interval(params, var), |
| 244 | val, open); |
| 245 | else |
| 246 | return -EINVAL; |
| 247 | if (changed) { |
| 248 | params->cmask |= 1 << var; |
| 249 | params->rmask |= 1 << var; |
| 250 | } |
| 251 | return changed; |
| 252 | } |
| 253 | |
| 254 | /** |
| 255 | * snd_pcm_hw_param_min |
| 256 | * @pcm: PCM instance |
| 257 | * @params: the hw_params instance |
| 258 | * @var: parameter to retrieve |
| 259 | * @val: minimal value |
| 260 | * @dir: pointer to the direction (-1,0,1) or NULL |
| 261 | * |
| 262 | * Inside configuration space defined by PARAMS remove from PAR all |
| 263 | * values < VAL. Reduce configuration space accordingly. |
| 264 | * Return new minimum or -EINVAL if the configuration space is empty |
| 265 | */ |
| 266 | static int snd_pcm_hw_param_min(struct snd_pcm_substream *pcm, |
| 267 | struct snd_pcm_hw_params *params, |
| 268 | snd_pcm_hw_param_t var, unsigned int val, |
| 269 | int *dir) |
| 270 | { |
| 271 | int changed = _snd_pcm_hw_param_min(params, var, val, dir ? *dir : 0); |
| 272 | if (changed < 0) |
| 273 | return changed; |
| 274 | if (params->rmask) { |
| 275 | int err = snd_pcm_hw_refine(pcm, params); |
| 276 | if (err < 0) |
| 277 | return err; |
| 278 | } |
| 279 | return snd_pcm_hw_param_value_min(params, var, dir); |
| 280 | } |
| 281 | |
| 282 | static int _snd_pcm_hw_param_max(struct snd_pcm_hw_params *params, |
| 283 | snd_pcm_hw_param_t var, unsigned int val, |
| 284 | int dir) |
| 285 | { |
| 286 | int changed; |
| 287 | int open = 0; |
| 288 | if (dir) { |
| 289 | if (dir < 0) { |
| 290 | open = 1; |
| 291 | } else if (dir > 0) { |
| 292 | open = 1; |
| 293 | val++; |
| 294 | } |
| 295 | } |
| 296 | if (hw_is_mask(var)) { |
| 297 | if (val == 0 && open) { |
| 298 | snd_mask_none(hw_param_mask(params, var)); |
| 299 | changed = -EINVAL; |
| 300 | } else |
| 301 | changed = snd_mask_refine_max(hw_param_mask(params, var), |
| 302 | val - !!open); |
| 303 | } else if (hw_is_interval(var)) |
| 304 | changed = snd_interval_refine_max(hw_param_interval(params, var), |
| 305 | val, open); |
| 306 | else |
| 307 | return -EINVAL; |
| 308 | if (changed) { |
| 309 | params->cmask |= 1 << var; |
| 310 | params->rmask |= 1 << var; |
| 311 | } |
| 312 | return changed; |
| 313 | } |
| 314 | |
| 315 | /** |
| 316 | * snd_pcm_hw_param_max |
| 317 | * @pcm: PCM instance |
| 318 | * @params: the hw_params instance |
| 319 | * @var: parameter to retrieve |
| 320 | * @val: maximal value |
| 321 | * @dir: pointer to the direction (-1,0,1) or NULL |
| 322 | * |
| 323 | * Inside configuration space defined by PARAMS remove from PAR all |
| 324 | * values >= VAL + 1. Reduce configuration space accordingly. |
| 325 | * Return new maximum or -EINVAL if the configuration space is empty |
| 326 | */ |
| 327 | static int snd_pcm_hw_param_max(struct snd_pcm_substream *pcm, |
| 328 | struct snd_pcm_hw_params *params, |
| 329 | snd_pcm_hw_param_t var, unsigned int val, |
| 330 | int *dir) |
| 331 | { |
| 332 | int changed = _snd_pcm_hw_param_max(params, var, val, dir ? *dir : 0); |
| 333 | if (changed < 0) |
| 334 | return changed; |
| 335 | if (params->rmask) { |
| 336 | int err = snd_pcm_hw_refine(pcm, params); |
| 337 | if (err < 0) |
| 338 | return err; |
| 339 | } |
| 340 | return snd_pcm_hw_param_value_max(params, var, dir); |
| 341 | } |
| 342 | |
| 343 | static int boundary_sub(int a, int adir, |
| 344 | int b, int bdir, |
| 345 | int *c, int *cdir) |
| 346 | { |
| 347 | adir = adir < 0 ? -1 : (adir > 0 ? 1 : 0); |
| 348 | bdir = bdir < 0 ? -1 : (bdir > 0 ? 1 : 0); |
| 349 | *c = a - b; |
| 350 | *cdir = adir - bdir; |
| 351 | if (*cdir == -2) { |
| 352 | (*c)--; |
| 353 | } else if (*cdir == 2) { |
| 354 | (*c)++; |
| 355 | } |
| 356 | return 0; |
| 357 | } |
| 358 | |
| 359 | static int boundary_lt(unsigned int a, int adir, |
| 360 | unsigned int b, int bdir) |
| 361 | { |
| 362 | if (adir < 0) { |
| 363 | a--; |
| 364 | adir = 1; |
| 365 | } else if (adir > 0) |
| 366 | adir = 1; |
| 367 | if (bdir < 0) { |
| 368 | b--; |
| 369 | bdir = 1; |
| 370 | } else if (bdir > 0) |
| 371 | bdir = 1; |
| 372 | return a < b || (a == b && adir < bdir); |
| 373 | } |
| 374 | |
| 375 | /* Return 1 if min is nearer to best than max */ |
| 376 | static int boundary_nearer(int min, int mindir, |
| 377 | int best, int bestdir, |
| 378 | int max, int maxdir) |
| 379 | { |
| 380 | int dmin, dmindir; |
| 381 | int dmax, dmaxdir; |
| 382 | boundary_sub(best, bestdir, min, mindir, &dmin, &dmindir); |
| 383 | boundary_sub(max, maxdir, best, bestdir, &dmax, &dmaxdir); |
| 384 | return boundary_lt(dmin, dmindir, dmax, dmaxdir); |
| 385 | } |
| 386 | |
| 387 | /** |
| 388 | * snd_pcm_hw_param_near |
| 389 | * @pcm: PCM instance |
| 390 | * @params: the hw_params instance |
| 391 | * @var: parameter to retrieve |
| 392 | * @best: value to set |
| 393 | * @dir: pointer to the direction (-1,0,1) or NULL |
| 394 | * |
| 395 | * Inside configuration space defined by PARAMS set PAR to the available value |
| 396 | * nearest to VAL. Reduce configuration space accordingly. |
| 397 | * This function cannot be called for SNDRV_PCM_HW_PARAM_ACCESS, |
| 398 | * SNDRV_PCM_HW_PARAM_FORMAT, SNDRV_PCM_HW_PARAM_SUBFORMAT. |
| 399 | * Return the value found. |
| 400 | */ |
| 401 | static int snd_pcm_hw_param_near(struct snd_pcm_substream *pcm, |
| 402 | struct snd_pcm_hw_params *params, |
| 403 | snd_pcm_hw_param_t var, unsigned int best, |
| 404 | int *dir) |
| 405 | { |
| 406 | struct snd_pcm_hw_params *save = NULL; |
| 407 | int v; |
| 408 | unsigned int saved_min; |
| 409 | int last = 0; |
| 410 | int min, max; |
| 411 | int mindir, maxdir; |
| 412 | int valdir = dir ? *dir : 0; |
| 413 | /* FIXME */ |
| 414 | if (best > INT_MAX) |
| 415 | best = INT_MAX; |
| 416 | min = max = best; |
| 417 | mindir = maxdir = valdir; |
| 418 | if (maxdir > 0) |
| 419 | maxdir = 0; |
| 420 | else if (maxdir == 0) |
| 421 | maxdir = -1; |
| 422 | else { |
| 423 | maxdir = 1; |
| 424 | max--; |
| 425 | } |
| 426 | save = kmalloc(sizeof(*save), GFP_KERNEL); |
| 427 | if (save == NULL) |
| 428 | return -ENOMEM; |
| 429 | *save = *params; |
| 430 | saved_min = min; |
| 431 | min = snd_pcm_hw_param_min(pcm, params, var, min, &mindir); |
| 432 | if (min >= 0) { |
| 433 | struct snd_pcm_hw_params *params1; |
| 434 | if (max < 0) |
| 435 | goto _end; |
| 436 | if ((unsigned int)min == saved_min && mindir == valdir) |
| 437 | goto _end; |
| 438 | params1 = kmalloc(sizeof(*params1), GFP_KERNEL); |
| 439 | if (params1 == NULL) { |
| 440 | kfree(save); |
| 441 | return -ENOMEM; |
| 442 | } |
| 443 | *params1 = *save; |
| 444 | max = snd_pcm_hw_param_max(pcm, params1, var, max, &maxdir); |
| 445 | if (max < 0) { |
| 446 | kfree(params1); |
| 447 | goto _end; |
| 448 | } |
| 449 | if (boundary_nearer(max, maxdir, best, valdir, min, mindir)) { |
| 450 | *params = *params1; |
| 451 | last = 1; |
| 452 | } |
| 453 | kfree(params1); |
| 454 | } else { |
| 455 | *params = *save; |
| 456 | max = snd_pcm_hw_param_max(pcm, params, var, max, &maxdir); |
| 457 | snd_assert(max >= 0, return -EINVAL); |
| 458 | last = 1; |
| 459 | } |
| 460 | _end: |
| 461 | kfree(save); |
| 462 | if (last) |
| 463 | v = snd_pcm_hw_param_last(pcm, params, var, dir); |
| 464 | else |
| 465 | v = snd_pcm_hw_param_first(pcm, params, var, dir); |
| 466 | snd_assert(v >= 0, return -EINVAL); |
| 467 | return v; |
| 468 | } |
| 469 | |
| 470 | static int _snd_pcm_hw_param_set(struct snd_pcm_hw_params *params, |
| 471 | snd_pcm_hw_param_t var, unsigned int val, |
| 472 | int dir) |
| 473 | { |
| 474 | int changed; |
| 475 | if (hw_is_mask(var)) { |
| 476 | struct snd_mask *m = hw_param_mask(params, var); |
| 477 | if (val == 0 && dir < 0) { |
| 478 | changed = -EINVAL; |
| 479 | snd_mask_none(m); |
| 480 | } else { |
| 481 | if (dir > 0) |
| 482 | val++; |
| 483 | else if (dir < 0) |
| 484 | val--; |
| 485 | changed = snd_mask_refine_set(hw_param_mask(params, var), val); |
| 486 | } |
| 487 | } else if (hw_is_interval(var)) { |
| 488 | struct snd_interval *i = hw_param_interval(params, var); |
| 489 | if (val == 0 && dir < 0) { |
| 490 | changed = -EINVAL; |
| 491 | snd_interval_none(i); |
| 492 | } else if (dir == 0) |
| 493 | changed = snd_interval_refine_set(i, val); |
| 494 | else { |
| 495 | struct snd_interval t; |
| 496 | t.openmin = 1; |
| 497 | t.openmax = 1; |
| 498 | t.empty = 0; |
| 499 | t.integer = 0; |
| 500 | if (dir < 0) { |
| 501 | t.min = val - 1; |
| 502 | t.max = val; |
| 503 | } else { |
| 504 | t.min = val; |
| 505 | t.max = val+1; |
| 506 | } |
| 507 | changed = snd_interval_refine(i, &t); |
| 508 | } |
| 509 | } else |
| 510 | return -EINVAL; |
| 511 | if (changed) { |
| 512 | params->cmask |= 1 << var; |
| 513 | params->rmask |= 1 << var; |
| 514 | } |
| 515 | return changed; |
| 516 | } |
| 517 | |
| 518 | /** |
| 519 | * snd_pcm_hw_param_set |
| 520 | * @pcm: PCM instance |
| 521 | * @params: the hw_params instance |
| 522 | * @var: parameter to retrieve |
| 523 | * @val: value to set |
| 524 | * @dir: pointer to the direction (-1,0,1) or NULL |
| 525 | * |
| 526 | * Inside configuration space defined by PARAMS remove from PAR all |
| 527 | * values != VAL. Reduce configuration space accordingly. |
| 528 | * Return VAL or -EINVAL if the configuration space is empty |
| 529 | */ |
| 530 | static int snd_pcm_hw_param_set(struct snd_pcm_substream *pcm, |
| 531 | struct snd_pcm_hw_params *params, |
| 532 | snd_pcm_hw_param_t var, unsigned int val, |
| 533 | int dir) |
| 534 | { |
| 535 | int changed = _snd_pcm_hw_param_set(params, var, val, dir); |
| 536 | if (changed < 0) |
| 537 | return changed; |
| 538 | if (params->rmask) { |
| 539 | int err = snd_pcm_hw_refine(pcm, params); |
| 540 | if (err < 0) |
| 541 | return err; |
| 542 | } |
| 543 | return snd_pcm_hw_param_value(params, var, NULL); |
| 544 | } |
| 545 | |
| 546 | static int _snd_pcm_hw_param_setinteger(struct snd_pcm_hw_params *params, |
| 547 | snd_pcm_hw_param_t var) |
| 548 | { |
| 549 | int changed; |
| 550 | changed = snd_interval_setinteger(hw_param_interval(params, var)); |
| 551 | if (changed) { |
| 552 | params->cmask |= 1 << var; |
| 553 | params->rmask |= 1 << var; |
| 554 | } |
| 555 | return changed; |
| 556 | } |
| 557 | |
| 558 | /* |
| 559 | * plugin |
| 560 | */ |
| 561 | |
Jaroslav Kysela | 21a3479 | 2006-01-13 09:12:11 +0100 | [diff] [blame] | 562 | #ifdef CONFIG_SND_PCM_OSS_PLUGINS |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 563 | static int snd_pcm_oss_plugin_clear(struct snd_pcm_substream *substream) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 564 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 565 | struct snd_pcm_runtime *runtime = substream->runtime; |
| 566 | struct snd_pcm_plugin *plugin, *next; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 567 | |
| 568 | plugin = runtime->oss.plugin_first; |
| 569 | while (plugin) { |
| 570 | next = plugin->next; |
| 571 | snd_pcm_plugin_free(plugin); |
| 572 | plugin = next; |
| 573 | } |
| 574 | runtime->oss.plugin_first = runtime->oss.plugin_last = NULL; |
| 575 | return 0; |
| 576 | } |
| 577 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 578 | static int snd_pcm_plugin_insert(struct snd_pcm_plugin *plugin) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 579 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 580 | struct snd_pcm_runtime *runtime = plugin->plug->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 581 | plugin->next = runtime->oss.plugin_first; |
| 582 | plugin->prev = NULL; |
| 583 | if (runtime->oss.plugin_first) { |
| 584 | runtime->oss.plugin_first->prev = plugin; |
| 585 | runtime->oss.plugin_first = plugin; |
| 586 | } else { |
| 587 | runtime->oss.plugin_last = |
| 588 | runtime->oss.plugin_first = plugin; |
| 589 | } |
| 590 | return 0; |
| 591 | } |
| 592 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 593 | int snd_pcm_plugin_append(struct snd_pcm_plugin *plugin) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 594 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 595 | struct snd_pcm_runtime *runtime = plugin->plug->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 596 | plugin->next = NULL; |
| 597 | plugin->prev = runtime->oss.plugin_last; |
| 598 | if (runtime->oss.plugin_last) { |
| 599 | runtime->oss.plugin_last->next = plugin; |
| 600 | runtime->oss.plugin_last = plugin; |
| 601 | } else { |
| 602 | runtime->oss.plugin_last = |
| 603 | runtime->oss.plugin_first = plugin; |
| 604 | } |
| 605 | return 0; |
| 606 | } |
Jaroslav Kysela | 21a3479 | 2006-01-13 09:12:11 +0100 | [diff] [blame] | 607 | #endif /* CONFIG_SND_PCM_OSS_PLUGINS */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 608 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 609 | static long snd_pcm_oss_bytes(struct snd_pcm_substream *substream, long frames) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 610 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 611 | struct snd_pcm_runtime *runtime = substream->runtime; |
Jaroslav Kysela | af08161 | 2005-05-27 11:15:20 +0200 | [diff] [blame] | 612 | long buffer_size = snd_pcm_lib_buffer_bytes(substream); |
Jaroslav Kysela | bfc5bdd | 2005-05-27 11:12:35 +0200 | [diff] [blame] | 613 | long bytes = frames_to_bytes(runtime, frames); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 614 | if (buffer_size == runtime->oss.buffer_bytes) |
Jaroslav Kysela | bfc5bdd | 2005-05-27 11:12:35 +0200 | [diff] [blame] | 615 | return bytes; |
Takashi Iwai | cdc5c53 | 2005-05-27 12:40:52 +0200 | [diff] [blame] | 616 | #if BITS_PER_LONG >= 64 |
| 617 | return runtime->oss.buffer_bytes * bytes / buffer_size; |
| 618 | #else |
| 619 | { |
| 620 | u64 bsize = (u64)runtime->oss.buffer_bytes * (u64)bytes; |
| 621 | u32 rem; |
| 622 | div64_32(&bsize, buffer_size, &rem); |
| 623 | return (long)bsize; |
| 624 | } |
| 625 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 626 | } |
| 627 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 628 | static long snd_pcm_alsa_frames(struct snd_pcm_substream *substream, long bytes) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 629 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 630 | struct snd_pcm_runtime *runtime = substream->runtime; |
Jaroslav Kysela | af08161 | 2005-05-27 11:15:20 +0200 | [diff] [blame] | 631 | long buffer_size = snd_pcm_lib_buffer_bytes(substream); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 632 | if (buffer_size == runtime->oss.buffer_bytes) |
| 633 | return bytes_to_frames(runtime, bytes); |
| 634 | return bytes_to_frames(runtime, (buffer_size * bytes) / runtime->oss.buffer_bytes); |
| 635 | } |
| 636 | |
| 637 | static int snd_pcm_oss_format_from(int format) |
| 638 | { |
| 639 | switch (format) { |
| 640 | case AFMT_MU_LAW: return SNDRV_PCM_FORMAT_MU_LAW; |
| 641 | case AFMT_A_LAW: return SNDRV_PCM_FORMAT_A_LAW; |
| 642 | case AFMT_IMA_ADPCM: return SNDRV_PCM_FORMAT_IMA_ADPCM; |
| 643 | case AFMT_U8: return SNDRV_PCM_FORMAT_U8; |
| 644 | case AFMT_S16_LE: return SNDRV_PCM_FORMAT_S16_LE; |
| 645 | case AFMT_S16_BE: return SNDRV_PCM_FORMAT_S16_BE; |
| 646 | case AFMT_S8: return SNDRV_PCM_FORMAT_S8; |
| 647 | case AFMT_U16_LE: return SNDRV_PCM_FORMAT_U16_LE; |
| 648 | case AFMT_U16_BE: return SNDRV_PCM_FORMAT_U16_BE; |
| 649 | case AFMT_MPEG: return SNDRV_PCM_FORMAT_MPEG; |
| 650 | default: return SNDRV_PCM_FORMAT_U8; |
| 651 | } |
| 652 | } |
| 653 | |
| 654 | static int snd_pcm_oss_format_to(int format) |
| 655 | { |
| 656 | switch (format) { |
| 657 | case SNDRV_PCM_FORMAT_MU_LAW: return AFMT_MU_LAW; |
| 658 | case SNDRV_PCM_FORMAT_A_LAW: return AFMT_A_LAW; |
| 659 | case SNDRV_PCM_FORMAT_IMA_ADPCM: return AFMT_IMA_ADPCM; |
| 660 | case SNDRV_PCM_FORMAT_U8: return AFMT_U8; |
| 661 | case SNDRV_PCM_FORMAT_S16_LE: return AFMT_S16_LE; |
| 662 | case SNDRV_PCM_FORMAT_S16_BE: return AFMT_S16_BE; |
| 663 | case SNDRV_PCM_FORMAT_S8: return AFMT_S8; |
| 664 | case SNDRV_PCM_FORMAT_U16_LE: return AFMT_U16_LE; |
| 665 | case SNDRV_PCM_FORMAT_U16_BE: return AFMT_U16_BE; |
| 666 | case SNDRV_PCM_FORMAT_MPEG: return AFMT_MPEG; |
| 667 | default: return -EINVAL; |
| 668 | } |
| 669 | } |
| 670 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 671 | static int snd_pcm_oss_period_size(struct snd_pcm_substream *substream, |
| 672 | struct snd_pcm_hw_params *oss_params, |
| 673 | struct snd_pcm_hw_params *slave_params) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 674 | { |
| 675 | size_t s; |
| 676 | size_t oss_buffer_size, oss_period_size, oss_periods; |
| 677 | size_t min_period_size, max_period_size; |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 678 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 679 | size_t oss_frame_size; |
| 680 | |
| 681 | oss_frame_size = snd_pcm_format_physical_width(params_format(oss_params)) * |
| 682 | params_channels(oss_params) / 8; |
| 683 | |
| 684 | oss_buffer_size = snd_pcm_plug_client_size(substream, |
| 685 | snd_pcm_hw_param_value_max(slave_params, SNDRV_PCM_HW_PARAM_BUFFER_SIZE, NULL)) * oss_frame_size; |
| 686 | oss_buffer_size = 1 << ld2(oss_buffer_size); |
Takashi Iwai | 9c323fc | 2006-04-28 15:13:41 +0200 | [diff] [blame] | 687 | if (atomic_read(&substream->mmap_count)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 688 | if (oss_buffer_size > runtime->oss.mmap_bytes) |
| 689 | oss_buffer_size = runtime->oss.mmap_bytes; |
| 690 | } |
| 691 | |
Takashi Iwai | 060d77b | 2006-03-27 16:44:52 +0200 | [diff] [blame] | 692 | if (substream->oss.setup.period_size > 16) |
| 693 | oss_period_size = substream->oss.setup.period_size; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 694 | else if (runtime->oss.fragshift) { |
| 695 | oss_period_size = 1 << runtime->oss.fragshift; |
| 696 | if (oss_period_size > oss_buffer_size / 2) |
| 697 | oss_period_size = oss_buffer_size / 2; |
| 698 | } else { |
| 699 | int sd; |
| 700 | size_t bytes_per_sec = params_rate(oss_params) * snd_pcm_format_physical_width(params_format(oss_params)) * params_channels(oss_params) / 8; |
| 701 | |
| 702 | oss_period_size = oss_buffer_size; |
| 703 | do { |
| 704 | oss_period_size /= 2; |
| 705 | } while (oss_period_size > bytes_per_sec); |
| 706 | if (runtime->oss.subdivision == 0) { |
| 707 | sd = 4; |
| 708 | if (oss_period_size / sd > 4096) |
| 709 | sd *= 2; |
| 710 | if (oss_period_size / sd < 4096) |
| 711 | sd = 1; |
| 712 | } else |
| 713 | sd = runtime->oss.subdivision; |
| 714 | oss_period_size /= sd; |
| 715 | if (oss_period_size < 16) |
| 716 | oss_period_size = 16; |
| 717 | } |
| 718 | |
| 719 | min_period_size = snd_pcm_plug_client_size(substream, |
| 720 | snd_pcm_hw_param_value_min(slave_params, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, NULL)); |
| 721 | min_period_size *= oss_frame_size; |
| 722 | min_period_size = 1 << (ld2(min_period_size - 1) + 1); |
| 723 | if (oss_period_size < min_period_size) |
| 724 | oss_period_size = min_period_size; |
| 725 | |
| 726 | max_period_size = snd_pcm_plug_client_size(substream, |
| 727 | snd_pcm_hw_param_value_max(slave_params, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, NULL)); |
| 728 | max_period_size *= oss_frame_size; |
| 729 | max_period_size = 1 << ld2(max_period_size); |
| 730 | if (oss_period_size > max_period_size) |
| 731 | oss_period_size = max_period_size; |
| 732 | |
| 733 | oss_periods = oss_buffer_size / oss_period_size; |
| 734 | |
Takashi Iwai | 060d77b | 2006-03-27 16:44:52 +0200 | [diff] [blame] | 735 | if (substream->oss.setup.periods > 1) |
| 736 | oss_periods = substream->oss.setup.periods; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 737 | |
| 738 | s = snd_pcm_hw_param_value_max(slave_params, SNDRV_PCM_HW_PARAM_PERIODS, NULL); |
| 739 | if (runtime->oss.maxfrags && s > runtime->oss.maxfrags) |
| 740 | s = runtime->oss.maxfrags; |
| 741 | if (oss_periods > s) |
| 742 | oss_periods = s; |
| 743 | |
| 744 | s = snd_pcm_hw_param_value_min(slave_params, SNDRV_PCM_HW_PARAM_PERIODS, NULL); |
| 745 | if (s < 2) |
| 746 | s = 2; |
| 747 | if (oss_periods < s) |
| 748 | oss_periods = s; |
| 749 | |
| 750 | while (oss_period_size * oss_periods > oss_buffer_size) |
| 751 | oss_period_size /= 2; |
| 752 | |
| 753 | snd_assert(oss_period_size >= 16, return -EINVAL); |
| 754 | runtime->oss.period_bytes = oss_period_size; |
| 755 | runtime->oss.period_frames = 1; |
| 756 | runtime->oss.periods = oss_periods; |
| 757 | return 0; |
| 758 | } |
| 759 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 760 | static int choose_rate(struct snd_pcm_substream *substream, |
| 761 | struct snd_pcm_hw_params *params, unsigned int best_rate) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 762 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 763 | struct snd_interval *it; |
| 764 | struct snd_pcm_hw_params *save; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 765 | unsigned int rate, prev; |
| 766 | |
| 767 | save = kmalloc(sizeof(*save), GFP_KERNEL); |
| 768 | if (save == NULL) |
| 769 | return -ENOMEM; |
| 770 | *save = *params; |
| 771 | it = hw_param_interval(save, SNDRV_PCM_HW_PARAM_RATE); |
| 772 | |
| 773 | /* try multiples of the best rate */ |
| 774 | rate = best_rate; |
| 775 | for (;;) { |
| 776 | if (it->max < rate || (it->max == rate && it->openmax)) |
| 777 | break; |
| 778 | if (it->min < rate || (it->min == rate && !it->openmin)) { |
| 779 | int ret; |
| 780 | ret = snd_pcm_hw_param_set(substream, params, |
| 781 | SNDRV_PCM_HW_PARAM_RATE, |
| 782 | rate, 0); |
| 783 | if (ret == (int)rate) { |
| 784 | kfree(save); |
| 785 | return rate; |
| 786 | } |
| 787 | *params = *save; |
| 788 | } |
| 789 | prev = rate; |
| 790 | rate += best_rate; |
| 791 | if (rate <= prev) |
| 792 | break; |
| 793 | } |
| 794 | |
| 795 | /* not found, use the nearest rate */ |
| 796 | kfree(save); |
| 797 | return snd_pcm_hw_param_near(substream, params, SNDRV_PCM_HW_PARAM_RATE, best_rate, NULL); |
| 798 | } |
| 799 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 800 | static int snd_pcm_oss_change_params(struct snd_pcm_substream *substream) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 801 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 802 | struct snd_pcm_runtime *runtime = substream->runtime; |
| 803 | struct snd_pcm_hw_params *params, *sparams; |
| 804 | struct snd_pcm_sw_params *sw_params; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 805 | ssize_t oss_buffer_size, oss_period_size; |
| 806 | size_t oss_frame_size; |
| 807 | int err; |
| 808 | int direct; |
| 809 | int format, sformat, n; |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 810 | struct snd_mask sformat_mask; |
| 811 | struct snd_mask mask; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 812 | |
| 813 | sw_params = kmalloc(sizeof(*sw_params), GFP_KERNEL); |
| 814 | params = kmalloc(sizeof(*params), GFP_KERNEL); |
| 815 | sparams = kmalloc(sizeof(*sparams), GFP_KERNEL); |
| 816 | if (!sw_params || !params || !sparams) { |
| 817 | snd_printd("No memory\n"); |
| 818 | err = -ENOMEM; |
| 819 | goto failure; |
| 820 | } |
| 821 | |
Takashi Iwai | 9c323fc | 2006-04-28 15:13:41 +0200 | [diff] [blame] | 822 | if (atomic_read(&substream->mmap_count)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 823 | direct = 1; |
Takashi Iwai | 060d77b | 2006-03-27 16:44:52 +0200 | [diff] [blame] | 824 | else |
| 825 | direct = substream->oss.setup.direct; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 826 | |
| 827 | _snd_pcm_hw_params_any(sparams); |
| 828 | _snd_pcm_hw_param_setinteger(sparams, SNDRV_PCM_HW_PARAM_PERIODS); |
| 829 | _snd_pcm_hw_param_min(sparams, SNDRV_PCM_HW_PARAM_PERIODS, 2, 0); |
| 830 | snd_mask_none(&mask); |
Takashi Iwai | 9c323fc | 2006-04-28 15:13:41 +0200 | [diff] [blame] | 831 | if (atomic_read(&substream->mmap_count)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 832 | snd_mask_set(&mask, SNDRV_PCM_ACCESS_MMAP_INTERLEAVED); |
| 833 | else { |
| 834 | snd_mask_set(&mask, SNDRV_PCM_ACCESS_RW_INTERLEAVED); |
| 835 | if (!direct) |
| 836 | snd_mask_set(&mask, SNDRV_PCM_ACCESS_RW_NONINTERLEAVED); |
| 837 | } |
| 838 | err = snd_pcm_hw_param_mask(substream, sparams, SNDRV_PCM_HW_PARAM_ACCESS, &mask); |
| 839 | if (err < 0) { |
| 840 | snd_printd("No usable accesses\n"); |
| 841 | err = -EINVAL; |
| 842 | goto failure; |
| 843 | } |
| 844 | choose_rate(substream, sparams, runtime->oss.rate); |
| 845 | snd_pcm_hw_param_near(substream, sparams, SNDRV_PCM_HW_PARAM_CHANNELS, runtime->oss.channels, NULL); |
| 846 | |
| 847 | format = snd_pcm_oss_format_from(runtime->oss.format); |
| 848 | |
| 849 | sformat_mask = *hw_param_mask(sparams, SNDRV_PCM_HW_PARAM_FORMAT); |
| 850 | if (direct) |
| 851 | sformat = format; |
| 852 | else |
| 853 | sformat = snd_pcm_plug_slave_format(format, &sformat_mask); |
| 854 | |
| 855 | if (sformat < 0 || !snd_mask_test(&sformat_mask, sformat)) { |
| 856 | for (sformat = 0; sformat <= SNDRV_PCM_FORMAT_LAST; sformat++) { |
| 857 | if (snd_mask_test(&sformat_mask, sformat) && |
| 858 | snd_pcm_oss_format_to(sformat) >= 0) |
| 859 | break; |
| 860 | } |
| 861 | if (sformat > SNDRV_PCM_FORMAT_LAST) { |
| 862 | snd_printd("Cannot find a format!!!\n"); |
| 863 | err = -EINVAL; |
| 864 | goto failure; |
| 865 | } |
| 866 | } |
| 867 | err = _snd_pcm_hw_param_set(sparams, SNDRV_PCM_HW_PARAM_FORMAT, sformat, 0); |
| 868 | snd_assert(err >= 0, goto failure); |
| 869 | |
| 870 | if (direct) { |
| 871 | memcpy(params, sparams, sizeof(*params)); |
| 872 | } else { |
| 873 | _snd_pcm_hw_params_any(params); |
| 874 | _snd_pcm_hw_param_set(params, SNDRV_PCM_HW_PARAM_ACCESS, |
| 875 | SNDRV_PCM_ACCESS_RW_INTERLEAVED, 0); |
| 876 | _snd_pcm_hw_param_set(params, SNDRV_PCM_HW_PARAM_FORMAT, |
| 877 | snd_pcm_oss_format_from(runtime->oss.format), 0); |
| 878 | _snd_pcm_hw_param_set(params, SNDRV_PCM_HW_PARAM_CHANNELS, |
| 879 | runtime->oss.channels, 0); |
| 880 | _snd_pcm_hw_param_set(params, SNDRV_PCM_HW_PARAM_RATE, |
| 881 | runtime->oss.rate, 0); |
| 882 | pdprintf("client: access = %i, format = %i, channels = %i, rate = %i\n", |
| 883 | params_access(params), params_format(params), |
| 884 | params_channels(params), params_rate(params)); |
| 885 | } |
| 886 | pdprintf("slave: access = %i, format = %i, channels = %i, rate = %i\n", |
| 887 | params_access(sparams), params_format(sparams), |
| 888 | params_channels(sparams), params_rate(sparams)); |
| 889 | |
| 890 | oss_frame_size = snd_pcm_format_physical_width(params_format(params)) * |
| 891 | params_channels(params) / 8; |
| 892 | |
Jaroslav Kysela | 21a3479 | 2006-01-13 09:12:11 +0100 | [diff] [blame] | 893 | #ifdef CONFIG_SND_PCM_OSS_PLUGINS |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 894 | snd_pcm_oss_plugin_clear(substream); |
| 895 | if (!direct) { |
| 896 | /* add necessary plugins */ |
| 897 | snd_pcm_oss_plugin_clear(substream); |
| 898 | if ((err = snd_pcm_plug_format_plugins(substream, |
| 899 | params, |
| 900 | sparams)) < 0) { |
| 901 | snd_printd("snd_pcm_plug_format_plugins failed: %i\n", err); |
| 902 | snd_pcm_oss_plugin_clear(substream); |
| 903 | goto failure; |
| 904 | } |
| 905 | if (runtime->oss.plugin_first) { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 906 | struct snd_pcm_plugin *plugin; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 907 | if ((err = snd_pcm_plugin_build_io(substream, sparams, &plugin)) < 0) { |
| 908 | snd_printd("snd_pcm_plugin_build_io failed: %i\n", err); |
| 909 | snd_pcm_oss_plugin_clear(substream); |
| 910 | goto failure; |
| 911 | } |
| 912 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { |
| 913 | err = snd_pcm_plugin_append(plugin); |
| 914 | } else { |
| 915 | err = snd_pcm_plugin_insert(plugin); |
| 916 | } |
| 917 | if (err < 0) { |
| 918 | snd_pcm_oss_plugin_clear(substream); |
| 919 | goto failure; |
| 920 | } |
| 921 | } |
| 922 | } |
Jaroslav Kysela | 21a3479 | 2006-01-13 09:12:11 +0100 | [diff] [blame] | 923 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 924 | |
| 925 | err = snd_pcm_oss_period_size(substream, params, sparams); |
| 926 | if (err < 0) |
| 927 | goto failure; |
| 928 | |
| 929 | n = snd_pcm_plug_slave_size(substream, runtime->oss.period_bytes / oss_frame_size); |
| 930 | err = snd_pcm_hw_param_near(substream, sparams, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, n, NULL); |
| 931 | snd_assert(err >= 0, goto failure); |
| 932 | |
| 933 | err = snd_pcm_hw_param_near(substream, sparams, SNDRV_PCM_HW_PARAM_PERIODS, |
| 934 | runtime->oss.periods, NULL); |
| 935 | snd_assert(err >= 0, goto failure); |
| 936 | |
| 937 | snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DROP, NULL); |
| 938 | |
| 939 | if ((err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_HW_PARAMS, sparams)) < 0) { |
| 940 | snd_printd("HW_PARAMS failed: %i\n", err); |
| 941 | goto failure; |
| 942 | } |
| 943 | |
| 944 | memset(sw_params, 0, sizeof(*sw_params)); |
| 945 | if (runtime->oss.trigger) { |
| 946 | sw_params->start_threshold = 1; |
| 947 | } else { |
| 948 | sw_params->start_threshold = runtime->boundary; |
| 949 | } |
Takashi Iwai | 9c323fc | 2006-04-28 15:13:41 +0200 | [diff] [blame] | 950 | if (atomic_read(&substream->mmap_count) || |
| 951 | substream->stream == SNDRV_PCM_STREAM_CAPTURE) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 952 | sw_params->stop_threshold = runtime->boundary; |
| 953 | else |
| 954 | sw_params->stop_threshold = runtime->buffer_size; |
| 955 | sw_params->tstamp_mode = SNDRV_PCM_TSTAMP_NONE; |
| 956 | sw_params->period_step = 1; |
| 957 | sw_params->sleep_min = 0; |
Takashi Iwai | 004e653 | 2005-04-12 17:33:59 +0200 | [diff] [blame] | 958 | sw_params->avail_min = substream->stream == SNDRV_PCM_STREAM_PLAYBACK ? |
| 959 | 1 : runtime->period_size; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 960 | sw_params->xfer_align = 1; |
Takashi Iwai | 9c323fc | 2006-04-28 15:13:41 +0200 | [diff] [blame] | 961 | if (atomic_read(&substream->mmap_count) || |
Takashi Iwai | 060d77b | 2006-03-27 16:44:52 +0200 | [diff] [blame] | 962 | substream->oss.setup.nosilence) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 963 | sw_params->silence_threshold = 0; |
| 964 | sw_params->silence_size = 0; |
| 965 | } else { |
| 966 | snd_pcm_uframes_t frames; |
| 967 | frames = runtime->period_size + 16; |
| 968 | if (frames > runtime->buffer_size) |
| 969 | frames = runtime->buffer_size; |
| 970 | sw_params->silence_threshold = frames; |
| 971 | sw_params->silence_size = frames; |
| 972 | } |
| 973 | |
| 974 | if ((err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_SW_PARAMS, sw_params)) < 0) { |
| 975 | snd_printd("SW_PARAMS failed: %i\n", err); |
| 976 | goto failure; |
| 977 | } |
| 978 | |
| 979 | runtime->oss.periods = params_periods(sparams); |
| 980 | oss_period_size = snd_pcm_plug_client_size(substream, params_period_size(sparams)); |
| 981 | snd_assert(oss_period_size >= 0, err = -EINVAL; goto failure); |
Jaroslav Kysela | 21a3479 | 2006-01-13 09:12:11 +0100 | [diff] [blame] | 982 | #ifdef CONFIG_SND_PCM_OSS_PLUGINS |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 983 | if (runtime->oss.plugin_first) { |
| 984 | err = snd_pcm_plug_alloc(substream, oss_period_size); |
| 985 | if (err < 0) |
| 986 | goto failure; |
| 987 | } |
Jaroslav Kysela | 21a3479 | 2006-01-13 09:12:11 +0100 | [diff] [blame] | 988 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 989 | oss_period_size *= oss_frame_size; |
| 990 | |
| 991 | oss_buffer_size = oss_period_size * runtime->oss.periods; |
| 992 | snd_assert(oss_buffer_size >= 0, err = -EINVAL; goto failure); |
| 993 | |
| 994 | runtime->oss.period_bytes = oss_period_size; |
| 995 | runtime->oss.buffer_bytes = oss_buffer_size; |
| 996 | |
| 997 | pdprintf("oss: period bytes = %i, buffer bytes = %i\n", |
| 998 | runtime->oss.period_bytes, |
| 999 | runtime->oss.buffer_bytes); |
| 1000 | pdprintf("slave: period_size = %i, buffer_size = %i\n", |
| 1001 | params_period_size(sparams), |
| 1002 | params_buffer_size(sparams)); |
| 1003 | |
| 1004 | runtime->oss.format = snd_pcm_oss_format_to(params_format(params)); |
| 1005 | runtime->oss.channels = params_channels(params); |
| 1006 | runtime->oss.rate = params_rate(params); |
| 1007 | |
| 1008 | runtime->oss.params = 0; |
| 1009 | runtime->oss.prepare = 1; |
| 1010 | vfree(runtime->oss.buffer); |
| 1011 | runtime->oss.buffer = vmalloc(runtime->oss.period_bytes); |
| 1012 | runtime->oss.buffer_used = 0; |
| 1013 | if (runtime->dma_area) |
| 1014 | snd_pcm_format_set_silence(runtime->format, runtime->dma_area, bytes_to_samples(runtime, runtime->dma_bytes)); |
| 1015 | |
| 1016 | runtime->oss.period_frames = snd_pcm_alsa_frames(substream, oss_period_size); |
| 1017 | |
| 1018 | err = 0; |
| 1019 | failure: |
| 1020 | kfree(sw_params); |
| 1021 | kfree(params); |
| 1022 | kfree(sparams); |
| 1023 | return err; |
| 1024 | } |
| 1025 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1026 | static int snd_pcm_oss_get_active_substream(struct snd_pcm_oss_file *pcm_oss_file, struct snd_pcm_substream **r_substream) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1027 | { |
| 1028 | int idx, err; |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1029 | struct snd_pcm_substream *asubstream = NULL, *substream; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1030 | |
| 1031 | for (idx = 0; idx < 2; idx++) { |
| 1032 | substream = pcm_oss_file->streams[idx]; |
| 1033 | if (substream == NULL) |
| 1034 | continue; |
| 1035 | if (asubstream == NULL) |
| 1036 | asubstream = substream; |
| 1037 | if (substream->runtime->oss.params) { |
| 1038 | err = snd_pcm_oss_change_params(substream); |
| 1039 | if (err < 0) |
| 1040 | return err; |
| 1041 | } |
| 1042 | } |
| 1043 | snd_assert(asubstream != NULL, return -EIO); |
| 1044 | if (r_substream) |
| 1045 | *r_substream = asubstream; |
| 1046 | return 0; |
| 1047 | } |
| 1048 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1049 | static int snd_pcm_oss_prepare(struct snd_pcm_substream *substream) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1050 | { |
| 1051 | int err; |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1052 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1053 | |
| 1054 | err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_PREPARE, NULL); |
| 1055 | if (err < 0) { |
| 1056 | snd_printd("snd_pcm_oss_prepare: SNDRV_PCM_IOCTL_PREPARE failed\n"); |
| 1057 | return err; |
| 1058 | } |
| 1059 | runtime->oss.prepare = 0; |
| 1060 | runtime->oss.prev_hw_ptr_interrupt = 0; |
| 1061 | runtime->oss.period_ptr = 0; |
| 1062 | runtime->oss.buffer_used = 0; |
| 1063 | |
| 1064 | return 0; |
| 1065 | } |
| 1066 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1067 | static int snd_pcm_oss_make_ready(struct snd_pcm_substream *substream) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1068 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1069 | struct snd_pcm_runtime *runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1070 | int err; |
| 1071 | |
| 1072 | if (substream == NULL) |
| 1073 | return 0; |
| 1074 | runtime = substream->runtime; |
| 1075 | if (runtime->oss.params) { |
| 1076 | err = snd_pcm_oss_change_params(substream); |
| 1077 | if (err < 0) |
| 1078 | return err; |
| 1079 | } |
| 1080 | if (runtime->oss.prepare) { |
| 1081 | err = snd_pcm_oss_prepare(substream); |
| 1082 | if (err < 0) |
| 1083 | return err; |
| 1084 | } |
| 1085 | return 0; |
| 1086 | } |
| 1087 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1088 | static int snd_pcm_oss_capture_position_fixup(struct snd_pcm_substream *substream, snd_pcm_sframes_t *delay) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1089 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1090 | struct snd_pcm_runtime *runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1091 | snd_pcm_uframes_t frames; |
| 1092 | int err = 0; |
| 1093 | |
| 1094 | while (1) { |
| 1095 | err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DELAY, delay); |
| 1096 | if (err < 0) |
| 1097 | break; |
| 1098 | runtime = substream->runtime; |
| 1099 | if (*delay <= (snd_pcm_sframes_t)runtime->buffer_size) |
| 1100 | break; |
| 1101 | /* in case of overrun, skip whole periods like OSS/Linux driver does */ |
| 1102 | /* until avail(delay) <= buffer_size */ |
| 1103 | frames = (*delay - runtime->buffer_size) + runtime->period_size - 1; |
| 1104 | frames /= runtime->period_size; |
| 1105 | frames *= runtime->period_size; |
| 1106 | err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_FORWARD, &frames); |
| 1107 | if (err < 0) |
| 1108 | break; |
| 1109 | } |
| 1110 | return err; |
| 1111 | } |
| 1112 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1113 | snd_pcm_sframes_t snd_pcm_oss_write3(struct snd_pcm_substream *substream, const char *ptr, snd_pcm_uframes_t frames, int in_kernel) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1114 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1115 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1116 | int ret; |
| 1117 | while (1) { |
| 1118 | if (runtime->status->state == SNDRV_PCM_STATE_XRUN || |
| 1119 | runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) { |
| 1120 | #ifdef OSS_DEBUG |
| 1121 | if (runtime->status->state == SNDRV_PCM_STATE_XRUN) |
| 1122 | printk("pcm_oss: write: recovering from XRUN\n"); |
| 1123 | else |
| 1124 | printk("pcm_oss: write: recovering from SUSPEND\n"); |
| 1125 | #endif |
| 1126 | ret = snd_pcm_oss_prepare(substream); |
| 1127 | if (ret < 0) |
| 1128 | break; |
| 1129 | } |
| 1130 | if (in_kernel) { |
| 1131 | mm_segment_t fs; |
| 1132 | fs = snd_enter_user(); |
| 1133 | ret = snd_pcm_lib_write(substream, (void __user *)ptr, frames); |
| 1134 | snd_leave_user(fs); |
| 1135 | } else { |
| 1136 | ret = snd_pcm_lib_write(substream, (void __user *)ptr, frames); |
| 1137 | } |
| 1138 | if (ret != -EPIPE && ret != -ESTRPIPE) |
| 1139 | break; |
| 1140 | /* test, if we can't store new data, because the stream */ |
| 1141 | /* has not been started */ |
| 1142 | if (runtime->status->state == SNDRV_PCM_STATE_PREPARED) |
| 1143 | return -EAGAIN; |
| 1144 | } |
| 1145 | return ret; |
| 1146 | } |
| 1147 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1148 | snd_pcm_sframes_t snd_pcm_oss_read3(struct snd_pcm_substream *substream, char *ptr, snd_pcm_uframes_t frames, int in_kernel) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1149 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1150 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1151 | snd_pcm_sframes_t delay; |
| 1152 | int ret; |
| 1153 | while (1) { |
| 1154 | if (runtime->status->state == SNDRV_PCM_STATE_XRUN || |
| 1155 | runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) { |
| 1156 | #ifdef OSS_DEBUG |
| 1157 | if (runtime->status->state == SNDRV_PCM_STATE_XRUN) |
| 1158 | printk("pcm_oss: read: recovering from XRUN\n"); |
| 1159 | else |
| 1160 | printk("pcm_oss: read: recovering from SUSPEND\n"); |
| 1161 | #endif |
| 1162 | ret = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DRAIN, NULL); |
| 1163 | if (ret < 0) |
| 1164 | break; |
| 1165 | } else if (runtime->status->state == SNDRV_PCM_STATE_SETUP) { |
| 1166 | ret = snd_pcm_oss_prepare(substream); |
| 1167 | if (ret < 0) |
| 1168 | break; |
| 1169 | } |
| 1170 | ret = snd_pcm_oss_capture_position_fixup(substream, &delay); |
| 1171 | if (ret < 0) |
| 1172 | break; |
| 1173 | if (in_kernel) { |
| 1174 | mm_segment_t fs; |
| 1175 | fs = snd_enter_user(); |
| 1176 | ret = snd_pcm_lib_read(substream, (void __user *)ptr, frames); |
| 1177 | snd_leave_user(fs); |
| 1178 | } else { |
| 1179 | ret = snd_pcm_lib_read(substream, (void __user *)ptr, frames); |
| 1180 | } |
| 1181 | if (ret == -EPIPE) { |
| 1182 | if (runtime->status->state == SNDRV_PCM_STATE_DRAINING) { |
| 1183 | ret = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DROP, NULL); |
| 1184 | if (ret < 0) |
| 1185 | break; |
| 1186 | } |
| 1187 | continue; |
| 1188 | } |
| 1189 | if (ret != -ESTRPIPE) |
| 1190 | break; |
| 1191 | } |
| 1192 | return ret; |
| 1193 | } |
| 1194 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1195 | snd_pcm_sframes_t snd_pcm_oss_writev3(struct snd_pcm_substream *substream, void **bufs, snd_pcm_uframes_t frames, int in_kernel) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1196 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1197 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1198 | int ret; |
| 1199 | while (1) { |
| 1200 | if (runtime->status->state == SNDRV_PCM_STATE_XRUN || |
| 1201 | runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) { |
| 1202 | #ifdef OSS_DEBUG |
| 1203 | if (runtime->status->state == SNDRV_PCM_STATE_XRUN) |
| 1204 | printk("pcm_oss: writev: recovering from XRUN\n"); |
| 1205 | else |
| 1206 | printk("pcm_oss: writev: recovering from SUSPEND\n"); |
| 1207 | #endif |
| 1208 | ret = snd_pcm_oss_prepare(substream); |
| 1209 | if (ret < 0) |
| 1210 | break; |
| 1211 | } |
| 1212 | if (in_kernel) { |
| 1213 | mm_segment_t fs; |
| 1214 | fs = snd_enter_user(); |
| 1215 | ret = snd_pcm_lib_writev(substream, (void __user **)bufs, frames); |
| 1216 | snd_leave_user(fs); |
| 1217 | } else { |
| 1218 | ret = snd_pcm_lib_writev(substream, (void __user **)bufs, frames); |
| 1219 | } |
| 1220 | if (ret != -EPIPE && ret != -ESTRPIPE) |
| 1221 | break; |
| 1222 | |
| 1223 | /* test, if we can't store new data, because the stream */ |
| 1224 | /* has not been started */ |
| 1225 | if (runtime->status->state == SNDRV_PCM_STATE_PREPARED) |
| 1226 | return -EAGAIN; |
| 1227 | } |
| 1228 | return ret; |
| 1229 | } |
| 1230 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1231 | snd_pcm_sframes_t snd_pcm_oss_readv3(struct snd_pcm_substream *substream, void **bufs, snd_pcm_uframes_t frames, int in_kernel) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1232 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1233 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1234 | int ret; |
| 1235 | while (1) { |
| 1236 | if (runtime->status->state == SNDRV_PCM_STATE_XRUN || |
| 1237 | runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) { |
| 1238 | #ifdef OSS_DEBUG |
| 1239 | if (runtime->status->state == SNDRV_PCM_STATE_XRUN) |
| 1240 | printk("pcm_oss: readv: recovering from XRUN\n"); |
| 1241 | else |
| 1242 | printk("pcm_oss: readv: recovering from SUSPEND\n"); |
| 1243 | #endif |
| 1244 | ret = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DRAIN, NULL); |
| 1245 | if (ret < 0) |
| 1246 | break; |
| 1247 | } else if (runtime->status->state == SNDRV_PCM_STATE_SETUP) { |
| 1248 | ret = snd_pcm_oss_prepare(substream); |
| 1249 | if (ret < 0) |
| 1250 | break; |
| 1251 | } |
| 1252 | if (in_kernel) { |
| 1253 | mm_segment_t fs; |
| 1254 | fs = snd_enter_user(); |
| 1255 | ret = snd_pcm_lib_readv(substream, (void __user **)bufs, frames); |
| 1256 | snd_leave_user(fs); |
| 1257 | } else { |
| 1258 | ret = snd_pcm_lib_readv(substream, (void __user **)bufs, frames); |
| 1259 | } |
| 1260 | if (ret != -EPIPE && ret != -ESTRPIPE) |
| 1261 | break; |
| 1262 | } |
| 1263 | return ret; |
| 1264 | } |
| 1265 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1266 | static ssize_t snd_pcm_oss_write2(struct snd_pcm_substream *substream, const char *buf, size_t bytes, int in_kernel) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1267 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1268 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1269 | snd_pcm_sframes_t frames, frames1; |
Jaroslav Kysela | 21a3479 | 2006-01-13 09:12:11 +0100 | [diff] [blame] | 1270 | #ifdef CONFIG_SND_PCM_OSS_PLUGINS |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1271 | if (runtime->oss.plugin_first) { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1272 | struct snd_pcm_plugin_channel *channels; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1273 | size_t oss_frame_bytes = (runtime->oss.plugin_first->src_width * runtime->oss.plugin_first->src_format.channels) / 8; |
| 1274 | if (!in_kernel) { |
| 1275 | if (copy_from_user(runtime->oss.buffer, (const char __user *)buf, bytes)) |
| 1276 | return -EFAULT; |
| 1277 | buf = runtime->oss.buffer; |
| 1278 | } |
| 1279 | frames = bytes / oss_frame_bytes; |
| 1280 | frames1 = snd_pcm_plug_client_channels_buf(substream, (char *)buf, frames, &channels); |
| 1281 | if (frames1 < 0) |
| 1282 | return frames1; |
| 1283 | frames1 = snd_pcm_plug_write_transfer(substream, channels, frames1); |
| 1284 | if (frames1 <= 0) |
| 1285 | return frames1; |
| 1286 | bytes = frames1 * oss_frame_bytes; |
Jaroslav Kysela | 21a3479 | 2006-01-13 09:12:11 +0100 | [diff] [blame] | 1287 | } else |
| 1288 | #endif |
| 1289 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1290 | frames = bytes_to_frames(runtime, bytes); |
| 1291 | frames1 = snd_pcm_oss_write3(substream, buf, frames, in_kernel); |
| 1292 | if (frames1 <= 0) |
| 1293 | return frames1; |
| 1294 | bytes = frames_to_bytes(runtime, frames1); |
| 1295 | } |
| 1296 | return bytes; |
| 1297 | } |
| 1298 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1299 | static ssize_t snd_pcm_oss_write1(struct snd_pcm_substream *substream, const char __user *buf, size_t bytes) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1300 | { |
| 1301 | size_t xfer = 0; |
| 1302 | ssize_t tmp; |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1303 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1304 | |
Takashi Iwai | 9c323fc | 2006-04-28 15:13:41 +0200 | [diff] [blame] | 1305 | if (atomic_read(&substream->mmap_count)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1306 | return -ENXIO; |
| 1307 | |
| 1308 | if ((tmp = snd_pcm_oss_make_ready(substream)) < 0) |
| 1309 | return tmp; |
| 1310 | while (bytes > 0) { |
| 1311 | if (bytes < runtime->oss.period_bytes || runtime->oss.buffer_used > 0) { |
| 1312 | tmp = bytes; |
| 1313 | if (tmp + runtime->oss.buffer_used > runtime->oss.period_bytes) |
| 1314 | tmp = runtime->oss.period_bytes - runtime->oss.buffer_used; |
| 1315 | if (tmp > 0) { |
| 1316 | if (copy_from_user(runtime->oss.buffer + runtime->oss.buffer_used, buf, tmp)) |
| 1317 | return xfer > 0 ? (snd_pcm_sframes_t)xfer : -EFAULT; |
| 1318 | } |
| 1319 | runtime->oss.buffer_used += tmp; |
| 1320 | buf += tmp; |
| 1321 | bytes -= tmp; |
| 1322 | xfer += tmp; |
Takashi Iwai | 060d77b | 2006-03-27 16:44:52 +0200 | [diff] [blame] | 1323 | if (substream->oss.setup.partialfrag || |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1324 | runtime->oss.buffer_used == runtime->oss.period_bytes) { |
| 1325 | tmp = snd_pcm_oss_write2(substream, runtime->oss.buffer + runtime->oss.period_ptr, |
| 1326 | runtime->oss.buffer_used - runtime->oss.period_ptr, 1); |
| 1327 | if (tmp <= 0) |
| 1328 | return xfer > 0 ? (snd_pcm_sframes_t)xfer : tmp; |
| 1329 | runtime->oss.bytes += tmp; |
| 1330 | runtime->oss.period_ptr += tmp; |
| 1331 | runtime->oss.period_ptr %= runtime->oss.period_bytes; |
| 1332 | if (runtime->oss.period_ptr == 0 || |
| 1333 | runtime->oss.period_ptr == runtime->oss.buffer_used) |
| 1334 | runtime->oss.buffer_used = 0; |
Takashi Iwai | 0df63e4 | 2006-04-28 15:13:41 +0200 | [diff] [blame] | 1335 | else if ((substream->f_flags & O_NONBLOCK) != 0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1336 | return xfer > 0 ? xfer : -EAGAIN; |
| 1337 | } |
| 1338 | } else { |
Clemens Ladisch | 4d23359 | 2005-09-05 10:35:20 +0200 | [diff] [blame] | 1339 | tmp = snd_pcm_oss_write2(substream, |
| 1340 | (const char __force *)buf, |
| 1341 | runtime->oss.period_bytes, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1342 | if (tmp <= 0) |
| 1343 | return xfer > 0 ? (snd_pcm_sframes_t)xfer : tmp; |
| 1344 | runtime->oss.bytes += tmp; |
| 1345 | buf += tmp; |
| 1346 | bytes -= tmp; |
| 1347 | xfer += tmp; |
Takashi Iwai | 0df63e4 | 2006-04-28 15:13:41 +0200 | [diff] [blame] | 1348 | if ((substream->f_flags & O_NONBLOCK) != 0 && |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1349 | tmp != runtime->oss.period_bytes) |
| 1350 | break; |
| 1351 | } |
| 1352 | } |
| 1353 | return xfer; |
| 1354 | } |
| 1355 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1356 | static ssize_t snd_pcm_oss_read2(struct snd_pcm_substream *substream, char *buf, size_t bytes, int in_kernel) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1357 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1358 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1359 | snd_pcm_sframes_t frames, frames1; |
Jaroslav Kysela | 21a3479 | 2006-01-13 09:12:11 +0100 | [diff] [blame] | 1360 | #ifdef CONFIG_SND_PCM_OSS_PLUGINS |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1361 | char __user *final_dst = (char __user *)buf; |
| 1362 | if (runtime->oss.plugin_first) { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1363 | struct snd_pcm_plugin_channel *channels; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1364 | size_t oss_frame_bytes = (runtime->oss.plugin_last->dst_width * runtime->oss.plugin_last->dst_format.channels) / 8; |
| 1365 | if (!in_kernel) |
| 1366 | buf = runtime->oss.buffer; |
| 1367 | frames = bytes / oss_frame_bytes; |
| 1368 | frames1 = snd_pcm_plug_client_channels_buf(substream, buf, frames, &channels); |
| 1369 | if (frames1 < 0) |
| 1370 | return frames1; |
| 1371 | frames1 = snd_pcm_plug_read_transfer(substream, channels, frames1); |
| 1372 | if (frames1 <= 0) |
| 1373 | return frames1; |
| 1374 | bytes = frames1 * oss_frame_bytes; |
| 1375 | if (!in_kernel && copy_to_user(final_dst, buf, bytes)) |
| 1376 | return -EFAULT; |
Jaroslav Kysela | 21a3479 | 2006-01-13 09:12:11 +0100 | [diff] [blame] | 1377 | } else |
| 1378 | #endif |
| 1379 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1380 | frames = bytes_to_frames(runtime, bytes); |
| 1381 | frames1 = snd_pcm_oss_read3(substream, buf, frames, in_kernel); |
| 1382 | if (frames1 <= 0) |
| 1383 | return frames1; |
| 1384 | bytes = frames_to_bytes(runtime, frames1); |
| 1385 | } |
| 1386 | return bytes; |
| 1387 | } |
| 1388 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1389 | static ssize_t snd_pcm_oss_read1(struct snd_pcm_substream *substream, char __user *buf, size_t bytes) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1390 | { |
| 1391 | size_t xfer = 0; |
| 1392 | ssize_t tmp; |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1393 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1394 | |
Takashi Iwai | 9c323fc | 2006-04-28 15:13:41 +0200 | [diff] [blame] | 1395 | if (atomic_read(&substream->mmap_count)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1396 | return -ENXIO; |
| 1397 | |
| 1398 | if ((tmp = snd_pcm_oss_make_ready(substream)) < 0) |
| 1399 | return tmp; |
| 1400 | while (bytes > 0) { |
| 1401 | if (bytes < runtime->oss.period_bytes || runtime->oss.buffer_used > 0) { |
| 1402 | if (runtime->oss.buffer_used == 0) { |
| 1403 | tmp = snd_pcm_oss_read2(substream, runtime->oss.buffer, runtime->oss.period_bytes, 1); |
| 1404 | if (tmp <= 0) |
| 1405 | return xfer > 0 ? (snd_pcm_sframes_t)xfer : tmp; |
| 1406 | runtime->oss.bytes += tmp; |
| 1407 | runtime->oss.period_ptr = tmp; |
| 1408 | runtime->oss.buffer_used = tmp; |
| 1409 | } |
| 1410 | tmp = bytes; |
| 1411 | if ((size_t) tmp > runtime->oss.buffer_used) |
| 1412 | tmp = runtime->oss.buffer_used; |
| 1413 | if (copy_to_user(buf, runtime->oss.buffer + (runtime->oss.period_ptr - runtime->oss.buffer_used), tmp)) |
| 1414 | return xfer > 0 ? (snd_pcm_sframes_t)xfer : -EFAULT; |
| 1415 | buf += tmp; |
| 1416 | bytes -= tmp; |
| 1417 | xfer += tmp; |
| 1418 | runtime->oss.buffer_used -= tmp; |
| 1419 | } else { |
Clemens Ladisch | 4d23359 | 2005-09-05 10:35:20 +0200 | [diff] [blame] | 1420 | tmp = snd_pcm_oss_read2(substream, (char __force *)buf, |
| 1421 | runtime->oss.period_bytes, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1422 | if (tmp <= 0) |
| 1423 | return xfer > 0 ? (snd_pcm_sframes_t)xfer : tmp; |
| 1424 | runtime->oss.bytes += tmp; |
| 1425 | buf += tmp; |
| 1426 | bytes -= tmp; |
| 1427 | xfer += tmp; |
| 1428 | } |
| 1429 | } |
| 1430 | return xfer; |
| 1431 | } |
| 1432 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1433 | static int snd_pcm_oss_reset(struct snd_pcm_oss_file *pcm_oss_file) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1434 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1435 | struct snd_pcm_substream *substream; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1436 | |
| 1437 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK]; |
| 1438 | if (substream != NULL) { |
Takashi Iwai | bf1bbb5 | 2006-03-27 16:22:45 +0200 | [diff] [blame] | 1439 | snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DROP, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1440 | substream->runtime->oss.prepare = 1; |
| 1441 | } |
| 1442 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE]; |
| 1443 | if (substream != NULL) { |
Takashi Iwai | bf1bbb5 | 2006-03-27 16:22:45 +0200 | [diff] [blame] | 1444 | snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DROP, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1445 | substream->runtime->oss.prepare = 1; |
| 1446 | } |
| 1447 | return 0; |
| 1448 | } |
| 1449 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1450 | static int snd_pcm_oss_post(struct snd_pcm_oss_file *pcm_oss_file) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1451 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1452 | struct snd_pcm_substream *substream; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1453 | int err; |
| 1454 | |
| 1455 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK]; |
| 1456 | if (substream != NULL) { |
| 1457 | if ((err = snd_pcm_oss_make_ready(substream)) < 0) |
| 1458 | return err; |
Takashi Iwai | bf1bbb5 | 2006-03-27 16:22:45 +0200 | [diff] [blame] | 1459 | snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_START, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1460 | } |
| 1461 | /* note: all errors from the start action are ignored */ |
| 1462 | /* OSS apps do not know, how to handle them */ |
| 1463 | return 0; |
| 1464 | } |
| 1465 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1466 | static int snd_pcm_oss_sync1(struct snd_pcm_substream *substream, size_t size) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1467 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1468 | struct snd_pcm_runtime *runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1469 | ssize_t result = 0; |
| 1470 | long res; |
| 1471 | wait_queue_t wait; |
| 1472 | |
| 1473 | runtime = substream->runtime; |
| 1474 | init_waitqueue_entry(&wait, current); |
| 1475 | add_wait_queue(&runtime->sleep, &wait); |
| 1476 | #ifdef OSS_DEBUG |
| 1477 | printk("sync1: size = %li\n", size); |
| 1478 | #endif |
| 1479 | while (1) { |
| 1480 | result = snd_pcm_oss_write2(substream, runtime->oss.buffer, size, 1); |
| 1481 | if (result > 0) { |
| 1482 | runtime->oss.buffer_used = 0; |
| 1483 | result = 0; |
| 1484 | break; |
| 1485 | } |
| 1486 | if (result != 0 && result != -EAGAIN) |
| 1487 | break; |
| 1488 | result = 0; |
| 1489 | set_current_state(TASK_INTERRUPTIBLE); |
| 1490 | snd_pcm_stream_lock_irq(substream); |
| 1491 | res = runtime->status->state; |
| 1492 | snd_pcm_stream_unlock_irq(substream); |
| 1493 | if (res != SNDRV_PCM_STATE_RUNNING) { |
| 1494 | set_current_state(TASK_RUNNING); |
| 1495 | break; |
| 1496 | } |
| 1497 | res = schedule_timeout(10 * HZ); |
| 1498 | if (signal_pending(current)) { |
| 1499 | result = -ERESTARTSYS; |
| 1500 | break; |
| 1501 | } |
| 1502 | if (res == 0) { |
| 1503 | snd_printk(KERN_ERR "OSS sync error - DMA timeout\n"); |
| 1504 | result = -EIO; |
| 1505 | break; |
| 1506 | } |
| 1507 | } |
| 1508 | remove_wait_queue(&runtime->sleep, &wait); |
| 1509 | return result; |
| 1510 | } |
| 1511 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1512 | static int snd_pcm_oss_sync(struct snd_pcm_oss_file *pcm_oss_file) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1513 | { |
| 1514 | int err = 0; |
| 1515 | unsigned int saved_f_flags; |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1516 | struct snd_pcm_substream *substream; |
| 1517 | struct snd_pcm_runtime *runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1518 | snd_pcm_format_t format; |
| 1519 | unsigned long width; |
| 1520 | size_t size; |
| 1521 | |
| 1522 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK]; |
| 1523 | if (substream != NULL) { |
| 1524 | runtime = substream->runtime; |
Takashi Iwai | 9c323fc | 2006-04-28 15:13:41 +0200 | [diff] [blame] | 1525 | if (atomic_read(&substream->mmap_count)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1526 | goto __direct; |
| 1527 | if ((err = snd_pcm_oss_make_ready(substream)) < 0) |
| 1528 | return err; |
| 1529 | format = snd_pcm_oss_format_from(runtime->oss.format); |
| 1530 | width = snd_pcm_format_physical_width(format); |
| 1531 | if (runtime->oss.buffer_used > 0) { |
| 1532 | #ifdef OSS_DEBUG |
| 1533 | printk("sync: buffer_used\n"); |
| 1534 | #endif |
| 1535 | size = (8 * (runtime->oss.period_bytes - runtime->oss.buffer_used) + 7) / width; |
| 1536 | snd_pcm_format_set_silence(format, |
| 1537 | runtime->oss.buffer + runtime->oss.buffer_used, |
| 1538 | size); |
| 1539 | err = snd_pcm_oss_sync1(substream, runtime->oss.period_bytes); |
| 1540 | if (err < 0) |
| 1541 | return err; |
| 1542 | } else if (runtime->oss.period_ptr > 0) { |
| 1543 | #ifdef OSS_DEBUG |
| 1544 | printk("sync: period_ptr\n"); |
| 1545 | #endif |
| 1546 | size = runtime->oss.period_bytes - runtime->oss.period_ptr; |
| 1547 | snd_pcm_format_set_silence(format, |
| 1548 | runtime->oss.buffer, |
| 1549 | size * 8 / width); |
| 1550 | err = snd_pcm_oss_sync1(substream, size); |
| 1551 | if (err < 0) |
| 1552 | return err; |
| 1553 | } |
| 1554 | /* |
| 1555 | * The ALSA's period might be a bit large than OSS one. |
| 1556 | * Fill the remain portion of ALSA period with zeros. |
| 1557 | */ |
| 1558 | size = runtime->control->appl_ptr % runtime->period_size; |
| 1559 | if (size > 0) { |
| 1560 | size = runtime->period_size - size; |
| 1561 | if (runtime->access == SNDRV_PCM_ACCESS_RW_INTERLEAVED) { |
| 1562 | size = (runtime->frame_bits * size) / 8; |
| 1563 | while (size > 0) { |
| 1564 | mm_segment_t fs; |
| 1565 | size_t size1 = size < runtime->oss.period_bytes ? size : runtime->oss.period_bytes; |
| 1566 | size -= size1; |
| 1567 | size1 *= 8; |
| 1568 | size1 /= runtime->sample_bits; |
| 1569 | snd_pcm_format_set_silence(runtime->format, |
| 1570 | runtime->oss.buffer, |
| 1571 | size1); |
| 1572 | fs = snd_enter_user(); |
| 1573 | snd_pcm_lib_write(substream, (void __user *)runtime->oss.buffer, size1); |
| 1574 | snd_leave_user(fs); |
| 1575 | } |
| 1576 | } else if (runtime->access == SNDRV_PCM_ACCESS_RW_NONINTERLEAVED) { |
| 1577 | void __user *buffers[runtime->channels]; |
| 1578 | memset(buffers, 0, runtime->channels * sizeof(void *)); |
| 1579 | snd_pcm_lib_writev(substream, buffers, size); |
| 1580 | } |
| 1581 | } |
| 1582 | /* |
| 1583 | * finish sync: drain the buffer |
| 1584 | */ |
| 1585 | __direct: |
Takashi Iwai | 0df63e4 | 2006-04-28 15:13:41 +0200 | [diff] [blame] | 1586 | saved_f_flags = substream->f_flags; |
| 1587 | substream->f_flags &= ~O_NONBLOCK; |
Takashi Iwai | bf1bbb5 | 2006-03-27 16:22:45 +0200 | [diff] [blame] | 1588 | err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DRAIN, NULL); |
Takashi Iwai | 0df63e4 | 2006-04-28 15:13:41 +0200 | [diff] [blame] | 1589 | substream->f_flags = saved_f_flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1590 | if (err < 0) |
| 1591 | return err; |
| 1592 | runtime->oss.prepare = 1; |
| 1593 | } |
| 1594 | |
| 1595 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE]; |
| 1596 | if (substream != NULL) { |
| 1597 | if ((err = snd_pcm_oss_make_ready(substream)) < 0) |
| 1598 | return err; |
| 1599 | runtime = substream->runtime; |
Takashi Iwai | bf1bbb5 | 2006-03-27 16:22:45 +0200 | [diff] [blame] | 1600 | err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DROP, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1601 | if (err < 0) |
| 1602 | return err; |
| 1603 | runtime->oss.buffer_used = 0; |
| 1604 | runtime->oss.prepare = 1; |
| 1605 | } |
| 1606 | return 0; |
| 1607 | } |
| 1608 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1609 | static int snd_pcm_oss_set_rate(struct snd_pcm_oss_file *pcm_oss_file, int rate) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1610 | { |
| 1611 | int idx; |
| 1612 | |
| 1613 | for (idx = 1; idx >= 0; --idx) { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1614 | struct snd_pcm_substream *substream = pcm_oss_file->streams[idx]; |
| 1615 | struct snd_pcm_runtime *runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1616 | if (substream == NULL) |
| 1617 | continue; |
| 1618 | runtime = substream->runtime; |
| 1619 | if (rate < 1000) |
| 1620 | rate = 1000; |
| 1621 | else if (rate > 192000) |
| 1622 | rate = 192000; |
| 1623 | if (runtime->oss.rate != rate) { |
| 1624 | runtime->oss.params = 1; |
| 1625 | runtime->oss.rate = rate; |
| 1626 | } |
| 1627 | } |
| 1628 | return snd_pcm_oss_get_rate(pcm_oss_file); |
| 1629 | } |
| 1630 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1631 | static int snd_pcm_oss_get_rate(struct snd_pcm_oss_file *pcm_oss_file) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1632 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1633 | struct snd_pcm_substream *substream; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1634 | int err; |
| 1635 | |
| 1636 | if ((err = snd_pcm_oss_get_active_substream(pcm_oss_file, &substream)) < 0) |
| 1637 | return err; |
| 1638 | return substream->runtime->oss.rate; |
| 1639 | } |
| 1640 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1641 | static int snd_pcm_oss_set_channels(struct snd_pcm_oss_file *pcm_oss_file, unsigned int channels) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1642 | { |
| 1643 | int idx; |
| 1644 | if (channels < 1) |
| 1645 | channels = 1; |
| 1646 | if (channels > 128) |
| 1647 | return -EINVAL; |
| 1648 | for (idx = 1; idx >= 0; --idx) { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1649 | struct snd_pcm_substream *substream = pcm_oss_file->streams[idx]; |
| 1650 | struct snd_pcm_runtime *runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1651 | if (substream == NULL) |
| 1652 | continue; |
| 1653 | runtime = substream->runtime; |
| 1654 | if (runtime->oss.channels != channels) { |
| 1655 | runtime->oss.params = 1; |
| 1656 | runtime->oss.channels = channels; |
| 1657 | } |
| 1658 | } |
| 1659 | return snd_pcm_oss_get_channels(pcm_oss_file); |
| 1660 | } |
| 1661 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1662 | static int snd_pcm_oss_get_channels(struct snd_pcm_oss_file *pcm_oss_file) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1663 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1664 | struct snd_pcm_substream *substream; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1665 | int err; |
| 1666 | |
| 1667 | if ((err = snd_pcm_oss_get_active_substream(pcm_oss_file, &substream)) < 0) |
| 1668 | return err; |
| 1669 | return substream->runtime->oss.channels; |
| 1670 | } |
| 1671 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1672 | static int snd_pcm_oss_get_block_size(struct snd_pcm_oss_file *pcm_oss_file) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1673 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1674 | struct snd_pcm_substream *substream; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1675 | int err; |
| 1676 | |
| 1677 | if ((err = snd_pcm_oss_get_active_substream(pcm_oss_file, &substream)) < 0) |
| 1678 | return err; |
| 1679 | return substream->runtime->oss.period_bytes; |
| 1680 | } |
| 1681 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1682 | static int snd_pcm_oss_get_formats(struct snd_pcm_oss_file *pcm_oss_file) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1683 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1684 | struct snd_pcm_substream *substream; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1685 | int err; |
| 1686 | int direct; |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1687 | struct snd_pcm_hw_params *params; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1688 | unsigned int formats = 0; |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1689 | struct snd_mask format_mask; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1690 | int fmt; |
| 1691 | |
| 1692 | if ((err = snd_pcm_oss_get_active_substream(pcm_oss_file, &substream)) < 0) |
| 1693 | return err; |
Takashi Iwai | 9c323fc | 2006-04-28 15:13:41 +0200 | [diff] [blame] | 1694 | if (atomic_read(&substream->mmap_count)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1695 | direct = 1; |
Takashi Iwai | 060d77b | 2006-03-27 16:44:52 +0200 | [diff] [blame] | 1696 | else |
| 1697 | direct = substream->oss.setup.direct; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1698 | if (!direct) |
| 1699 | return AFMT_MU_LAW | AFMT_U8 | |
| 1700 | AFMT_S16_LE | AFMT_S16_BE | |
| 1701 | AFMT_S8 | AFMT_U16_LE | |
| 1702 | AFMT_U16_BE; |
| 1703 | params = kmalloc(sizeof(*params), GFP_KERNEL); |
| 1704 | if (!params) |
| 1705 | return -ENOMEM; |
| 1706 | _snd_pcm_hw_params_any(params); |
| 1707 | err = snd_pcm_hw_refine(substream, params); |
| 1708 | format_mask = *hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT); |
| 1709 | kfree(params); |
| 1710 | snd_assert(err >= 0, return err); |
| 1711 | for (fmt = 0; fmt < 32; ++fmt) { |
| 1712 | if (snd_mask_test(&format_mask, fmt)) { |
| 1713 | int f = snd_pcm_oss_format_to(fmt); |
| 1714 | if (f >= 0) |
| 1715 | formats |= f; |
| 1716 | } |
| 1717 | } |
| 1718 | return formats; |
| 1719 | } |
| 1720 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1721 | static int snd_pcm_oss_set_format(struct snd_pcm_oss_file *pcm_oss_file, int format) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1722 | { |
| 1723 | int formats, idx; |
| 1724 | |
| 1725 | if (format != AFMT_QUERY) { |
| 1726 | formats = snd_pcm_oss_get_formats(pcm_oss_file); |
Steven Finney | 5c59e09 | 2006-04-13 12:49:31 +0200 | [diff] [blame] | 1727 | if (formats < 0) |
| 1728 | return formats; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1729 | if (!(formats & format)) |
| 1730 | format = AFMT_U8; |
| 1731 | for (idx = 1; idx >= 0; --idx) { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1732 | struct snd_pcm_substream *substream = pcm_oss_file->streams[idx]; |
| 1733 | struct snd_pcm_runtime *runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1734 | if (substream == NULL) |
| 1735 | continue; |
| 1736 | runtime = substream->runtime; |
| 1737 | if (runtime->oss.format != format) { |
| 1738 | runtime->oss.params = 1; |
| 1739 | runtime->oss.format = format; |
| 1740 | } |
| 1741 | } |
| 1742 | } |
| 1743 | return snd_pcm_oss_get_format(pcm_oss_file); |
| 1744 | } |
| 1745 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1746 | static int snd_pcm_oss_get_format(struct snd_pcm_oss_file *pcm_oss_file) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1747 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1748 | struct snd_pcm_substream *substream; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1749 | int err; |
| 1750 | |
| 1751 | if ((err = snd_pcm_oss_get_active_substream(pcm_oss_file, &substream)) < 0) |
| 1752 | return err; |
| 1753 | return substream->runtime->oss.format; |
| 1754 | } |
| 1755 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1756 | static int snd_pcm_oss_set_subdivide1(struct snd_pcm_substream *substream, int subdivide) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1757 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1758 | struct snd_pcm_runtime *runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1759 | |
| 1760 | if (substream == NULL) |
| 1761 | return 0; |
| 1762 | runtime = substream->runtime; |
| 1763 | if (subdivide == 0) { |
| 1764 | subdivide = runtime->oss.subdivision; |
| 1765 | if (subdivide == 0) |
| 1766 | subdivide = 1; |
| 1767 | return subdivide; |
| 1768 | } |
| 1769 | if (runtime->oss.subdivision || runtime->oss.fragshift) |
| 1770 | return -EINVAL; |
| 1771 | if (subdivide != 1 && subdivide != 2 && subdivide != 4 && |
| 1772 | subdivide != 8 && subdivide != 16) |
| 1773 | return -EINVAL; |
| 1774 | runtime->oss.subdivision = subdivide; |
| 1775 | runtime->oss.params = 1; |
| 1776 | return subdivide; |
| 1777 | } |
| 1778 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1779 | static int snd_pcm_oss_set_subdivide(struct snd_pcm_oss_file *pcm_oss_file, int subdivide) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1780 | { |
| 1781 | int err = -EINVAL, idx; |
| 1782 | |
| 1783 | for (idx = 1; idx >= 0; --idx) { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1784 | struct snd_pcm_substream *substream = pcm_oss_file->streams[idx]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1785 | if (substream == NULL) |
| 1786 | continue; |
| 1787 | if ((err = snd_pcm_oss_set_subdivide1(substream, subdivide)) < 0) |
| 1788 | return err; |
| 1789 | } |
| 1790 | return err; |
| 1791 | } |
| 1792 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1793 | static int snd_pcm_oss_set_fragment1(struct snd_pcm_substream *substream, unsigned int val) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1794 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1795 | struct snd_pcm_runtime *runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1796 | |
| 1797 | if (substream == NULL) |
| 1798 | return 0; |
| 1799 | runtime = substream->runtime; |
| 1800 | if (runtime->oss.subdivision || runtime->oss.fragshift) |
| 1801 | return -EINVAL; |
| 1802 | runtime->oss.fragshift = val & 0xffff; |
| 1803 | runtime->oss.maxfrags = (val >> 16) & 0xffff; |
| 1804 | if (runtime->oss.fragshift < 4) /* < 16 */ |
| 1805 | runtime->oss.fragshift = 4; |
| 1806 | if (runtime->oss.maxfrags < 2) |
| 1807 | runtime->oss.maxfrags = 2; |
| 1808 | runtime->oss.params = 1; |
| 1809 | return 0; |
| 1810 | } |
| 1811 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1812 | static int snd_pcm_oss_set_fragment(struct snd_pcm_oss_file *pcm_oss_file, unsigned int val) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1813 | { |
| 1814 | int err = -EINVAL, idx; |
| 1815 | |
| 1816 | for (idx = 1; idx >= 0; --idx) { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1817 | struct snd_pcm_substream *substream = pcm_oss_file->streams[idx]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1818 | if (substream == NULL) |
| 1819 | continue; |
| 1820 | if ((err = snd_pcm_oss_set_fragment1(substream, val)) < 0) |
| 1821 | return err; |
| 1822 | } |
| 1823 | return err; |
| 1824 | } |
| 1825 | |
| 1826 | static int snd_pcm_oss_nonblock(struct file * file) |
| 1827 | { |
| 1828 | file->f_flags |= O_NONBLOCK; |
| 1829 | return 0; |
| 1830 | } |
| 1831 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1832 | static int snd_pcm_oss_get_caps1(struct snd_pcm_substream *substream, int res) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1833 | { |
| 1834 | |
| 1835 | if (substream == NULL) { |
| 1836 | res &= ~DSP_CAP_DUPLEX; |
| 1837 | return res; |
| 1838 | } |
| 1839 | #ifdef DSP_CAP_MULTI |
| 1840 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) |
| 1841 | if (substream->pstr->substream_count > 1) |
| 1842 | res |= DSP_CAP_MULTI; |
| 1843 | #endif |
| 1844 | /* DSP_CAP_REALTIME is set all times: */ |
| 1845 | /* all ALSA drivers can return actual pointer in ring buffer */ |
| 1846 | #if defined(DSP_CAP_REALTIME) && 0 |
| 1847 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1848 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1849 | if (runtime->info & (SNDRV_PCM_INFO_BLOCK_TRANSFER|SNDRV_PCM_INFO_BATCH)) |
| 1850 | res &= ~DSP_CAP_REALTIME; |
| 1851 | } |
| 1852 | #endif |
| 1853 | return res; |
| 1854 | } |
| 1855 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1856 | static int snd_pcm_oss_get_caps(struct snd_pcm_oss_file *pcm_oss_file) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1857 | { |
| 1858 | int result, idx; |
| 1859 | |
| 1860 | result = DSP_CAP_TRIGGER | DSP_CAP_MMAP | DSP_CAP_DUPLEX | DSP_CAP_REALTIME; |
| 1861 | for (idx = 0; idx < 2; idx++) { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1862 | struct snd_pcm_substream *substream = pcm_oss_file->streams[idx]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1863 | result = snd_pcm_oss_get_caps1(substream, result); |
| 1864 | } |
| 1865 | result |= 0x0001; /* revision - same as SB AWE 64 */ |
| 1866 | return result; |
| 1867 | } |
| 1868 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1869 | static void snd_pcm_oss_simulate_fill(struct snd_pcm_substream *substream, snd_pcm_uframes_t hw_ptr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1870 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1871 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1872 | snd_pcm_uframes_t appl_ptr; |
| 1873 | appl_ptr = hw_ptr + runtime->buffer_size; |
| 1874 | appl_ptr %= runtime->boundary; |
| 1875 | runtime->control->appl_ptr = appl_ptr; |
| 1876 | } |
| 1877 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1878 | static int snd_pcm_oss_set_trigger(struct snd_pcm_oss_file *pcm_oss_file, int trigger) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1879 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1880 | struct snd_pcm_runtime *runtime; |
| 1881 | struct snd_pcm_substream *psubstream = NULL, *csubstream = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1882 | int err, cmd; |
| 1883 | |
| 1884 | #ifdef OSS_DEBUG |
| 1885 | printk("pcm_oss: trigger = 0x%x\n", trigger); |
| 1886 | #endif |
| 1887 | |
| 1888 | psubstream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK]; |
| 1889 | csubstream = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE]; |
| 1890 | |
| 1891 | if (psubstream) { |
| 1892 | if ((err = snd_pcm_oss_make_ready(psubstream)) < 0) |
| 1893 | return err; |
| 1894 | } |
| 1895 | if (csubstream) { |
| 1896 | if ((err = snd_pcm_oss_make_ready(csubstream)) < 0) |
| 1897 | return err; |
| 1898 | } |
| 1899 | if (psubstream) { |
| 1900 | runtime = psubstream->runtime; |
| 1901 | if (trigger & PCM_ENABLE_OUTPUT) { |
| 1902 | if (runtime->oss.trigger) |
| 1903 | goto _skip1; |
Takashi Iwai | 9c323fc | 2006-04-28 15:13:41 +0200 | [diff] [blame] | 1904 | if (atomic_read(&psubstream->mmap_count)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1905 | snd_pcm_oss_simulate_fill(psubstream, runtime->hw_ptr_interrupt); |
| 1906 | runtime->oss.trigger = 1; |
| 1907 | runtime->start_threshold = 1; |
| 1908 | cmd = SNDRV_PCM_IOCTL_START; |
| 1909 | } else { |
| 1910 | if (!runtime->oss.trigger) |
| 1911 | goto _skip1; |
| 1912 | runtime->oss.trigger = 0; |
| 1913 | runtime->start_threshold = runtime->boundary; |
| 1914 | cmd = SNDRV_PCM_IOCTL_DROP; |
| 1915 | runtime->oss.prepare = 1; |
| 1916 | } |
Takashi Iwai | bf1bbb5 | 2006-03-27 16:22:45 +0200 | [diff] [blame] | 1917 | err = snd_pcm_kernel_ioctl(psubstream, cmd, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1918 | if (err < 0) |
| 1919 | return err; |
| 1920 | } |
| 1921 | _skip1: |
| 1922 | if (csubstream) { |
| 1923 | runtime = csubstream->runtime; |
| 1924 | if (trigger & PCM_ENABLE_INPUT) { |
| 1925 | if (runtime->oss.trigger) |
| 1926 | goto _skip2; |
| 1927 | runtime->oss.trigger = 1; |
| 1928 | runtime->start_threshold = 1; |
| 1929 | cmd = SNDRV_PCM_IOCTL_START; |
| 1930 | } else { |
| 1931 | if (!runtime->oss.trigger) |
| 1932 | goto _skip2; |
| 1933 | runtime->oss.trigger = 0; |
| 1934 | runtime->start_threshold = runtime->boundary; |
| 1935 | cmd = SNDRV_PCM_IOCTL_DROP; |
| 1936 | runtime->oss.prepare = 1; |
| 1937 | } |
Takashi Iwai | bf1bbb5 | 2006-03-27 16:22:45 +0200 | [diff] [blame] | 1938 | err = snd_pcm_kernel_ioctl(csubstream, cmd, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1939 | if (err < 0) |
| 1940 | return err; |
| 1941 | } |
| 1942 | _skip2: |
| 1943 | return 0; |
| 1944 | } |
| 1945 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1946 | static int snd_pcm_oss_get_trigger(struct snd_pcm_oss_file *pcm_oss_file) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1947 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1948 | struct snd_pcm_substream *psubstream = NULL, *csubstream = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1949 | int result = 0; |
| 1950 | |
| 1951 | psubstream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK]; |
| 1952 | csubstream = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE]; |
| 1953 | if (psubstream && psubstream->runtime && psubstream->runtime->oss.trigger) |
| 1954 | result |= PCM_ENABLE_OUTPUT; |
| 1955 | if (csubstream && csubstream->runtime && csubstream->runtime->oss.trigger) |
| 1956 | result |= PCM_ENABLE_INPUT; |
| 1957 | return result; |
| 1958 | } |
| 1959 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1960 | static int snd_pcm_oss_get_odelay(struct snd_pcm_oss_file *pcm_oss_file) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1961 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1962 | struct snd_pcm_substream *substream; |
| 1963 | struct snd_pcm_runtime *runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1964 | snd_pcm_sframes_t delay; |
| 1965 | int err; |
| 1966 | |
| 1967 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK]; |
| 1968 | if (substream == NULL) |
| 1969 | return -EINVAL; |
| 1970 | if ((err = snd_pcm_oss_make_ready(substream)) < 0) |
| 1971 | return err; |
| 1972 | runtime = substream->runtime; |
| 1973 | if (runtime->oss.params || runtime->oss.prepare) |
| 1974 | return 0; |
Takashi Iwai | bf1bbb5 | 2006-03-27 16:22:45 +0200 | [diff] [blame] | 1975 | err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DELAY, &delay); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1976 | if (err == -EPIPE) |
| 1977 | delay = 0; /* hack for broken OSS applications */ |
| 1978 | else if (err < 0) |
| 1979 | return err; |
| 1980 | return snd_pcm_oss_bytes(substream, delay); |
| 1981 | } |
| 1982 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1983 | static int snd_pcm_oss_get_ptr(struct snd_pcm_oss_file *pcm_oss_file, int stream, struct count_info __user * _info) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1984 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1985 | struct snd_pcm_substream *substream; |
| 1986 | struct snd_pcm_runtime *runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1987 | snd_pcm_sframes_t delay; |
| 1988 | int fixup; |
| 1989 | struct count_info info; |
| 1990 | int err; |
| 1991 | |
| 1992 | if (_info == NULL) |
| 1993 | return -EFAULT; |
| 1994 | substream = pcm_oss_file->streams[stream]; |
| 1995 | if (substream == NULL) |
| 1996 | return -EINVAL; |
| 1997 | if ((err = snd_pcm_oss_make_ready(substream)) < 0) |
| 1998 | return err; |
| 1999 | runtime = substream->runtime; |
| 2000 | if (runtime->oss.params || runtime->oss.prepare) { |
| 2001 | memset(&info, 0, sizeof(info)); |
| 2002 | if (copy_to_user(_info, &info, sizeof(info))) |
| 2003 | return -EFAULT; |
| 2004 | return 0; |
| 2005 | } |
| 2006 | if (stream == SNDRV_PCM_STREAM_PLAYBACK) { |
| 2007 | err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DELAY, &delay); |
| 2008 | if (err == -EPIPE || err == -ESTRPIPE || (! err && delay < 0)) { |
| 2009 | err = 0; |
| 2010 | delay = 0; |
| 2011 | fixup = 0; |
| 2012 | } else { |
| 2013 | fixup = runtime->oss.buffer_used; |
| 2014 | } |
| 2015 | } else { |
| 2016 | err = snd_pcm_oss_capture_position_fixup(substream, &delay); |
| 2017 | fixup = -runtime->oss.buffer_used; |
| 2018 | } |
| 2019 | if (err < 0) |
| 2020 | return err; |
| 2021 | info.ptr = snd_pcm_oss_bytes(substream, runtime->status->hw_ptr % runtime->buffer_size); |
Takashi Iwai | 9c323fc | 2006-04-28 15:13:41 +0200 | [diff] [blame] | 2022 | if (atomic_read(&substream->mmap_count)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2023 | snd_pcm_sframes_t n; |
| 2024 | n = (delay = runtime->hw_ptr_interrupt) - runtime->oss.prev_hw_ptr_interrupt; |
| 2025 | if (n < 0) |
| 2026 | n += runtime->boundary; |
| 2027 | info.blocks = n / runtime->period_size; |
| 2028 | runtime->oss.prev_hw_ptr_interrupt = delay; |
| 2029 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) |
| 2030 | snd_pcm_oss_simulate_fill(substream, delay); |
| 2031 | info.bytes = snd_pcm_oss_bytes(substream, runtime->status->hw_ptr) & INT_MAX; |
| 2032 | } else { |
Jaroslav Kysela | 5ac0fab | 2005-05-31 16:59:39 +0200 | [diff] [blame] | 2033 | delay = snd_pcm_oss_bytes(substream, delay); |
Jaroslav Kysela | fb4bd0a | 2005-05-31 15:44:23 +0200 | [diff] [blame] | 2034 | if (stream == SNDRV_PCM_STREAM_PLAYBACK) { |
Takashi Iwai | 060d77b | 2006-03-27 16:44:52 +0200 | [diff] [blame] | 2035 | if (substream->oss.setup.buggyptr) |
Takashi Iwai | 10f69f9 | 2005-09-08 13:48:34 +0200 | [diff] [blame] | 2036 | info.blocks = (runtime->oss.buffer_bytes - delay - fixup) / runtime->oss.period_bytes; |
| 2037 | else |
| 2038 | info.blocks = (delay + fixup) / runtime->oss.period_bytes; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2039 | info.bytes = (runtime->oss.bytes - delay) & INT_MAX; |
Jaroslav Kysela | fb4bd0a | 2005-05-31 15:44:23 +0200 | [diff] [blame] | 2040 | } else { |
Jaroslav Kysela | 5ac0fab | 2005-05-31 16:59:39 +0200 | [diff] [blame] | 2041 | delay += fixup; |
| 2042 | info.blocks = delay / runtime->oss.period_bytes; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2043 | info.bytes = (runtime->oss.bytes + delay) & INT_MAX; |
Jaroslav Kysela | fb4bd0a | 2005-05-31 15:44:23 +0200 | [diff] [blame] | 2044 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2045 | } |
| 2046 | if (copy_to_user(_info, &info, sizeof(info))) |
| 2047 | return -EFAULT; |
| 2048 | return 0; |
| 2049 | } |
| 2050 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2051 | static int snd_pcm_oss_get_space(struct snd_pcm_oss_file *pcm_oss_file, int stream, struct audio_buf_info __user *_info) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2052 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2053 | struct snd_pcm_substream *substream; |
| 2054 | struct snd_pcm_runtime *runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2055 | snd_pcm_sframes_t avail; |
| 2056 | int fixup; |
| 2057 | struct audio_buf_info info; |
| 2058 | int err; |
| 2059 | |
| 2060 | if (_info == NULL) |
| 2061 | return -EFAULT; |
| 2062 | substream = pcm_oss_file->streams[stream]; |
| 2063 | if (substream == NULL) |
| 2064 | return -EINVAL; |
| 2065 | runtime = substream->runtime; |
| 2066 | |
| 2067 | if (runtime->oss.params && |
| 2068 | (err = snd_pcm_oss_change_params(substream)) < 0) |
| 2069 | return err; |
| 2070 | |
| 2071 | info.fragsize = runtime->oss.period_bytes; |
| 2072 | info.fragstotal = runtime->periods; |
| 2073 | if (runtime->oss.prepare) { |
| 2074 | if (stream == SNDRV_PCM_STREAM_PLAYBACK) { |
| 2075 | info.bytes = runtime->oss.period_bytes * runtime->oss.periods; |
| 2076 | info.fragments = runtime->oss.periods; |
| 2077 | } else { |
| 2078 | info.bytes = 0; |
| 2079 | info.fragments = 0; |
| 2080 | } |
| 2081 | } else { |
| 2082 | if (stream == SNDRV_PCM_STREAM_PLAYBACK) { |
| 2083 | err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DELAY, &avail); |
| 2084 | if (err == -EPIPE || err == -ESTRPIPE || (! err && avail < 0)) { |
| 2085 | avail = runtime->buffer_size; |
| 2086 | err = 0; |
| 2087 | fixup = 0; |
| 2088 | } else { |
| 2089 | avail = runtime->buffer_size - avail; |
| 2090 | fixup = -runtime->oss.buffer_used; |
| 2091 | } |
| 2092 | } else { |
| 2093 | err = snd_pcm_oss_capture_position_fixup(substream, &avail); |
| 2094 | fixup = runtime->oss.buffer_used; |
| 2095 | } |
| 2096 | if (err < 0) |
| 2097 | return err; |
| 2098 | info.bytes = snd_pcm_oss_bytes(substream, avail) + fixup; |
| 2099 | info.fragments = info.bytes / runtime->oss.period_bytes; |
| 2100 | } |
| 2101 | |
| 2102 | #ifdef OSS_DEBUG |
| 2103 | printk("pcm_oss: space: bytes = %i, fragments = %i, fragstotal = %i, fragsize = %i\n", info.bytes, info.fragments, info.fragstotal, info.fragsize); |
| 2104 | #endif |
| 2105 | if (copy_to_user(_info, &info, sizeof(info))) |
| 2106 | return -EFAULT; |
| 2107 | return 0; |
| 2108 | } |
| 2109 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2110 | static int snd_pcm_oss_get_mapbuf(struct snd_pcm_oss_file *pcm_oss_file, int stream, struct buffmem_desc __user * _info) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2111 | { |
| 2112 | // it won't be probably implemented |
| 2113 | // snd_printd("TODO: snd_pcm_oss_get_mapbuf\n"); |
| 2114 | return -EINVAL; |
| 2115 | } |
| 2116 | |
Takashi Iwai | 060d77b | 2006-03-27 16:44:52 +0200 | [diff] [blame] | 2117 | static const char *strip_task_path(const char *path) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2118 | { |
Takashi Iwai | 060d77b | 2006-03-27 16:44:52 +0200 | [diff] [blame] | 2119 | const char *ptr, *ptrl = NULL; |
| 2120 | for (ptr = path; *ptr; ptr++) { |
| 2121 | if (*ptr == '/') |
| 2122 | ptrl = ptr + 1; |
| 2123 | } |
| 2124 | return ptrl; |
| 2125 | } |
| 2126 | |
| 2127 | static void snd_pcm_oss_look_for_setup(struct snd_pcm *pcm, int stream, |
| 2128 | const char *task_name, |
| 2129 | struct snd_pcm_oss_setup *rsetup) |
| 2130 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2131 | struct snd_pcm_oss_setup *setup; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2132 | |
Ingo Molnar | 1a60d4c | 2006-01-16 16:29:08 +0100 | [diff] [blame] | 2133 | mutex_lock(&pcm->streams[stream].oss.setup_mutex); |
Takashi Iwai | 060d77b | 2006-03-27 16:44:52 +0200 | [diff] [blame] | 2134 | do { |
| 2135 | for (setup = pcm->streams[stream].oss.setup_list; setup; |
| 2136 | setup = setup->next) { |
| 2137 | if (!strcmp(setup->task_name, task_name)) |
| 2138 | goto out; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2139 | } |
Takashi Iwai | 060d77b | 2006-03-27 16:44:52 +0200 | [diff] [blame] | 2140 | } while ((task_name = strip_task_path(task_name)) != NULL); |
| 2141 | out: |
| 2142 | if (setup) |
| 2143 | *rsetup = *setup; |
Ingo Molnar | 1a60d4c | 2006-01-16 16:29:08 +0100 | [diff] [blame] | 2144 | mutex_unlock(&pcm->streams[stream].oss.setup_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2145 | } |
| 2146 | |
Takashi Iwai | 3bf75f9 | 2006-03-27 16:40:49 +0200 | [diff] [blame] | 2147 | static void snd_pcm_oss_release_substream(struct snd_pcm_substream *substream) |
| 2148 | { |
| 2149 | struct snd_pcm_runtime *runtime; |
| 2150 | runtime = substream->runtime; |
| 2151 | vfree(runtime->oss.buffer); |
| 2152 | runtime->oss.buffer = NULL; |
| 2153 | #ifdef CONFIG_SND_PCM_OSS_PLUGINS |
| 2154 | snd_pcm_oss_plugin_clear(substream); |
| 2155 | #endif |
| 2156 | substream->oss.oss = 0; |
| 2157 | } |
| 2158 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2159 | static void snd_pcm_oss_init_substream(struct snd_pcm_substream *substream, |
| 2160 | struct snd_pcm_oss_setup *setup, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2161 | int minor) |
| 2162 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2163 | struct snd_pcm_runtime *runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2164 | |
| 2165 | substream->oss.oss = 1; |
Takashi Iwai | 060d77b | 2006-03-27 16:44:52 +0200 | [diff] [blame] | 2166 | substream->oss.setup = *setup; |
Takashi Iwai | 3bf75f9 | 2006-03-27 16:40:49 +0200 | [diff] [blame] | 2167 | if (setup->nonblock) |
Takashi Iwai | 0df63e4 | 2006-04-28 15:13:41 +0200 | [diff] [blame] | 2168 | substream->f_flags |= O_NONBLOCK; |
Takashi Iwai | 1576274 | 2006-04-06 19:47:42 +0200 | [diff] [blame] | 2169 | else if (setup->block) |
Takashi Iwai | 0df63e4 | 2006-04-28 15:13:41 +0200 | [diff] [blame] | 2170 | substream->f_flags &= ~O_NONBLOCK; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2171 | runtime = substream->runtime; |
| 2172 | runtime->oss.params = 1; |
| 2173 | runtime->oss.trigger = 1; |
| 2174 | runtime->oss.rate = 8000; |
| 2175 | switch (SNDRV_MINOR_OSS_DEVICE(minor)) { |
| 2176 | case SNDRV_MINOR_OSS_PCM_8: |
| 2177 | runtime->oss.format = AFMT_U8; |
| 2178 | break; |
| 2179 | case SNDRV_MINOR_OSS_PCM_16: |
| 2180 | runtime->oss.format = AFMT_S16_LE; |
| 2181 | break; |
| 2182 | default: |
| 2183 | runtime->oss.format = AFMT_MU_LAW; |
| 2184 | } |
| 2185 | runtime->oss.channels = 1; |
| 2186 | runtime->oss.fragshift = 0; |
| 2187 | runtime->oss.maxfrags = 0; |
| 2188 | runtime->oss.subdivision = 0; |
Takashi Iwai | 3bf75f9 | 2006-03-27 16:40:49 +0200 | [diff] [blame] | 2189 | substream->pcm_release = snd_pcm_oss_release_substream; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2190 | } |
| 2191 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2192 | static int snd_pcm_oss_release_file(struct snd_pcm_oss_file *pcm_oss_file) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2193 | { |
| 2194 | int cidx; |
| 2195 | snd_assert(pcm_oss_file != NULL, return -ENXIO); |
| 2196 | for (cidx = 0; cidx < 2; ++cidx) { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2197 | struct snd_pcm_substream *substream = pcm_oss_file->streams[cidx]; |
Takashi Iwai | 3bf75f9 | 2006-03-27 16:40:49 +0200 | [diff] [blame] | 2198 | if (substream) |
| 2199 | snd_pcm_release_substream(substream); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2200 | } |
| 2201 | kfree(pcm_oss_file); |
| 2202 | return 0; |
| 2203 | } |
| 2204 | |
| 2205 | static int snd_pcm_oss_open_file(struct file *file, |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2206 | struct snd_pcm *pcm, |
| 2207 | struct snd_pcm_oss_file **rpcm_oss_file, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2208 | int minor, |
Takashi Iwai | 060d77b | 2006-03-27 16:44:52 +0200 | [diff] [blame] | 2209 | struct snd_pcm_oss_setup *setup) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2210 | { |
Takashi Iwai | 3bf75f9 | 2006-03-27 16:40:49 +0200 | [diff] [blame] | 2211 | int idx, err; |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2212 | struct snd_pcm_oss_file *pcm_oss_file; |
Takashi Iwai | 3bf75f9 | 2006-03-27 16:40:49 +0200 | [diff] [blame] | 2213 | struct snd_pcm_substream *substream; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2214 | unsigned int f_mode = file->f_mode; |
| 2215 | |
| 2216 | snd_assert(rpcm_oss_file != NULL, return -EINVAL); |
| 2217 | *rpcm_oss_file = NULL; |
| 2218 | |
Takashi Iwai | ca2c096 | 2005-09-09 14:20:23 +0200 | [diff] [blame] | 2219 | pcm_oss_file = kzalloc(sizeof(*pcm_oss_file), GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2220 | if (pcm_oss_file == NULL) |
| 2221 | return -ENOMEM; |
| 2222 | |
| 2223 | if ((f_mode & (FMODE_WRITE|FMODE_READ)) == (FMODE_WRITE|FMODE_READ) && |
| 2224 | (pcm->info_flags & SNDRV_PCM_INFO_HALF_DUPLEX)) |
| 2225 | f_mode = FMODE_WRITE; |
Takashi Iwai | 3bf75f9 | 2006-03-27 16:40:49 +0200 | [diff] [blame] | 2226 | |
Takashi Iwai | 0df63e4 | 2006-04-28 15:13:41 +0200 | [diff] [blame] | 2227 | file->f_flags &= ~O_APPEND; |
Takashi Iwai | 3bf75f9 | 2006-03-27 16:40:49 +0200 | [diff] [blame] | 2228 | for (idx = 0; idx < 2; idx++) { |
Takashi Iwai | 060d77b | 2006-03-27 16:44:52 +0200 | [diff] [blame] | 2229 | if (setup[idx].disable) |
Takashi Iwai | 3bf75f9 | 2006-03-27 16:40:49 +0200 | [diff] [blame] | 2230 | continue; |
Takashi Iwai | 6cb53e7 | 2006-08-02 21:12:09 +0200 | [diff] [blame] | 2231 | if (! pcm->streams[idx].substream_count) |
| 2232 | continue; /* no matching substream */ |
Takashi Iwai | 3bf75f9 | 2006-03-27 16:40:49 +0200 | [diff] [blame] | 2233 | if (idx == SNDRV_PCM_STREAM_PLAYBACK) { |
| 2234 | if (! (f_mode & FMODE_WRITE)) |
| 2235 | continue; |
| 2236 | } else { |
| 2237 | if (! (f_mode & FMODE_READ)) |
| 2238 | continue; |
| 2239 | } |
| 2240 | err = snd_pcm_open_substream(pcm, idx, file, &substream); |
| 2241 | if (err < 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2242 | snd_pcm_oss_release_file(pcm_oss_file); |
| 2243 | return err; |
| 2244 | } |
Takashi Iwai | 3bf75f9 | 2006-03-27 16:40:49 +0200 | [diff] [blame] | 2245 | |
| 2246 | pcm_oss_file->streams[idx] = substream; |
Takashi Iwai | 1576274 | 2006-04-06 19:47:42 +0200 | [diff] [blame] | 2247 | substream->file = pcm_oss_file; |
Takashi Iwai | 060d77b | 2006-03-27 16:44:52 +0200 | [diff] [blame] | 2248 | snd_pcm_oss_init_substream(substream, &setup[idx], minor); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2249 | } |
| 2250 | |
OGAWA Hirofumi | bbdc1b7 | 2006-04-06 19:42:40 +0200 | [diff] [blame] | 2251 | if (!pcm_oss_file->streams[0] && !pcm_oss_file->streams[1]) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2252 | snd_pcm_oss_release_file(pcm_oss_file); |
| 2253 | return -EINVAL; |
| 2254 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2255 | |
| 2256 | file->private_data = pcm_oss_file; |
| 2257 | *rpcm_oss_file = pcm_oss_file; |
| 2258 | return 0; |
| 2259 | } |
| 2260 | |
| 2261 | |
Takashi Iwai | 93f2e37 | 2005-10-10 11:51:55 +0200 | [diff] [blame] | 2262 | static int snd_task_name(struct task_struct *task, char *name, size_t size) |
| 2263 | { |
| 2264 | unsigned int idx; |
| 2265 | |
| 2266 | snd_assert(task != NULL && name != NULL && size >= 2, return -EINVAL); |
| 2267 | for (idx = 0; idx < sizeof(task->comm) && idx + 1 < size; idx++) |
| 2268 | name[idx] = task->comm[idx]; |
| 2269 | name[idx] = '\0'; |
| 2270 | return 0; |
| 2271 | } |
| 2272 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2273 | static int snd_pcm_oss_open(struct inode *inode, struct file *file) |
| 2274 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2275 | int err; |
| 2276 | char task_name[32]; |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2277 | struct snd_pcm *pcm; |
| 2278 | struct snd_pcm_oss_file *pcm_oss_file; |
Takashi Iwai | 060d77b | 2006-03-27 16:44:52 +0200 | [diff] [blame] | 2279 | struct snd_pcm_oss_setup setup[2]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2280 | int nonblock; |
| 2281 | wait_queue_t wait; |
| 2282 | |
Clemens Ladisch | f87135f | 2005-11-20 14:06:59 +0100 | [diff] [blame] | 2283 | pcm = snd_lookup_oss_minor_data(iminor(inode), |
| 2284 | SNDRV_OSS_DEVICE_TYPE_PCM); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2285 | if (pcm == NULL) { |
| 2286 | err = -ENODEV; |
| 2287 | goto __error1; |
| 2288 | } |
| 2289 | err = snd_card_file_add(pcm->card, file); |
| 2290 | if (err < 0) |
| 2291 | goto __error1; |
| 2292 | if (!try_module_get(pcm->card->module)) { |
| 2293 | err = -EFAULT; |
| 2294 | goto __error2; |
| 2295 | } |
| 2296 | if (snd_task_name(current, task_name, sizeof(task_name)) < 0) { |
| 2297 | err = -EFAULT; |
| 2298 | goto __error; |
| 2299 | } |
Takashi Iwai | 1576274 | 2006-04-06 19:47:42 +0200 | [diff] [blame] | 2300 | memset(setup, 0, sizeof(setup)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2301 | if (file->f_mode & FMODE_WRITE) |
Takashi Iwai | 060d77b | 2006-03-27 16:44:52 +0200 | [diff] [blame] | 2302 | snd_pcm_oss_look_for_setup(pcm, SNDRV_PCM_STREAM_PLAYBACK, |
| 2303 | task_name, &setup[0]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2304 | if (file->f_mode & FMODE_READ) |
Takashi Iwai | 060d77b | 2006-03-27 16:44:52 +0200 | [diff] [blame] | 2305 | snd_pcm_oss_look_for_setup(pcm, SNDRV_PCM_STREAM_CAPTURE, |
| 2306 | task_name, &setup[1]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2307 | |
| 2308 | nonblock = !!(file->f_flags & O_NONBLOCK); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2309 | if (!nonblock) |
| 2310 | nonblock = nonblock_open; |
| 2311 | |
| 2312 | init_waitqueue_entry(&wait, current); |
| 2313 | add_wait_queue(&pcm->open_wait, &wait); |
Ingo Molnar | 1a60d4c | 2006-01-16 16:29:08 +0100 | [diff] [blame] | 2314 | mutex_lock(&pcm->open_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2315 | while (1) { |
| 2316 | err = snd_pcm_oss_open_file(file, pcm, &pcm_oss_file, |
Takashi Iwai | 3bf75f9 | 2006-03-27 16:40:49 +0200 | [diff] [blame] | 2317 | iminor(inode), setup); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2318 | if (err >= 0) |
| 2319 | break; |
| 2320 | if (err == -EAGAIN) { |
| 2321 | if (nonblock) { |
| 2322 | err = -EBUSY; |
| 2323 | break; |
| 2324 | } |
| 2325 | } else |
| 2326 | break; |
| 2327 | set_current_state(TASK_INTERRUPTIBLE); |
Ingo Molnar | 1a60d4c | 2006-01-16 16:29:08 +0100 | [diff] [blame] | 2328 | mutex_unlock(&pcm->open_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2329 | schedule(); |
Ingo Molnar | 1a60d4c | 2006-01-16 16:29:08 +0100 | [diff] [blame] | 2330 | mutex_lock(&pcm->open_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2331 | if (signal_pending(current)) { |
| 2332 | err = -ERESTARTSYS; |
| 2333 | break; |
| 2334 | } |
| 2335 | } |
| 2336 | remove_wait_queue(&pcm->open_wait, &wait); |
Ingo Molnar | 1a60d4c | 2006-01-16 16:29:08 +0100 | [diff] [blame] | 2337 | mutex_unlock(&pcm->open_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2338 | if (err < 0) |
| 2339 | goto __error; |
| 2340 | return err; |
| 2341 | |
| 2342 | __error: |
| 2343 | module_put(pcm->card->module); |
| 2344 | __error2: |
| 2345 | snd_card_file_remove(pcm->card, file); |
| 2346 | __error1: |
| 2347 | return err; |
| 2348 | } |
| 2349 | |
| 2350 | static int snd_pcm_oss_release(struct inode *inode, struct file *file) |
| 2351 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2352 | struct snd_pcm *pcm; |
| 2353 | struct snd_pcm_substream *substream; |
| 2354 | struct snd_pcm_oss_file *pcm_oss_file; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2355 | |
| 2356 | pcm_oss_file = file->private_data; |
| 2357 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK]; |
| 2358 | if (substream == NULL) |
| 2359 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE]; |
| 2360 | snd_assert(substream != NULL, return -ENXIO); |
| 2361 | pcm = substream->pcm; |
| 2362 | snd_pcm_oss_sync(pcm_oss_file); |
Ingo Molnar | 1a60d4c | 2006-01-16 16:29:08 +0100 | [diff] [blame] | 2363 | mutex_lock(&pcm->open_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2364 | snd_pcm_oss_release_file(pcm_oss_file); |
Ingo Molnar | 1a60d4c | 2006-01-16 16:29:08 +0100 | [diff] [blame] | 2365 | mutex_unlock(&pcm->open_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2366 | wake_up(&pcm->open_wait); |
| 2367 | module_put(pcm->card->module); |
| 2368 | snd_card_file_remove(pcm->card, file); |
| 2369 | return 0; |
| 2370 | } |
| 2371 | |
| 2372 | static long snd_pcm_oss_ioctl(struct file *file, unsigned int cmd, unsigned long arg) |
| 2373 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2374 | struct snd_pcm_oss_file *pcm_oss_file; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2375 | int __user *p = (int __user *)arg; |
| 2376 | int res; |
| 2377 | |
| 2378 | pcm_oss_file = file->private_data; |
| 2379 | if (cmd == OSS_GETVERSION) |
| 2380 | return put_user(SNDRV_OSS_VERSION, p); |
| 2381 | if (cmd == OSS_ALSAEMULVER) |
| 2382 | return put_user(1, p); |
| 2383 | #if defined(CONFIG_SND_MIXER_OSS) || (defined(MODULE) && defined(CONFIG_SND_MIXER_OSS_MODULE)) |
| 2384 | if (((cmd >> 8) & 0xff) == 'M') { /* mixer ioctl - for OSS compatibility */ |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2385 | struct snd_pcm_substream *substream; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2386 | int idx; |
| 2387 | for (idx = 0; idx < 2; ++idx) { |
| 2388 | substream = pcm_oss_file->streams[idx]; |
| 2389 | if (substream != NULL) |
| 2390 | break; |
| 2391 | } |
| 2392 | snd_assert(substream != NULL, return -ENXIO); |
| 2393 | return snd_mixer_oss_ioctl_card(substream->pcm->card, cmd, arg); |
| 2394 | } |
| 2395 | #endif |
| 2396 | if (((cmd >> 8) & 0xff) != 'P') |
| 2397 | return -EINVAL; |
| 2398 | #ifdef OSS_DEBUG |
| 2399 | printk("pcm_oss: ioctl = 0x%x\n", cmd); |
| 2400 | #endif |
| 2401 | switch (cmd) { |
| 2402 | case SNDCTL_DSP_RESET: |
| 2403 | return snd_pcm_oss_reset(pcm_oss_file); |
| 2404 | case SNDCTL_DSP_SYNC: |
| 2405 | return snd_pcm_oss_sync(pcm_oss_file); |
| 2406 | case SNDCTL_DSP_SPEED: |
| 2407 | if (get_user(res, p)) |
| 2408 | return -EFAULT; |
| 2409 | if ((res = snd_pcm_oss_set_rate(pcm_oss_file, res))<0) |
| 2410 | return res; |
| 2411 | return put_user(res, p); |
| 2412 | case SOUND_PCM_READ_RATE: |
| 2413 | res = snd_pcm_oss_get_rate(pcm_oss_file); |
| 2414 | if (res < 0) |
| 2415 | return res; |
| 2416 | return put_user(res, p); |
| 2417 | case SNDCTL_DSP_STEREO: |
| 2418 | if (get_user(res, p)) |
| 2419 | return -EFAULT; |
| 2420 | res = res > 0 ? 2 : 1; |
| 2421 | if ((res = snd_pcm_oss_set_channels(pcm_oss_file, res)) < 0) |
| 2422 | return res; |
| 2423 | return put_user(--res, p); |
| 2424 | case SNDCTL_DSP_GETBLKSIZE: |
| 2425 | res = snd_pcm_oss_get_block_size(pcm_oss_file); |
| 2426 | if (res < 0) |
| 2427 | return res; |
| 2428 | return put_user(res, p); |
| 2429 | case SNDCTL_DSP_SETFMT: |
| 2430 | if (get_user(res, p)) |
| 2431 | return -EFAULT; |
| 2432 | res = snd_pcm_oss_set_format(pcm_oss_file, res); |
| 2433 | if (res < 0) |
| 2434 | return res; |
| 2435 | return put_user(res, p); |
| 2436 | case SOUND_PCM_READ_BITS: |
| 2437 | res = snd_pcm_oss_get_format(pcm_oss_file); |
| 2438 | if (res < 0) |
| 2439 | return res; |
| 2440 | return put_user(res, p); |
| 2441 | case SNDCTL_DSP_CHANNELS: |
| 2442 | if (get_user(res, p)) |
| 2443 | return -EFAULT; |
| 2444 | res = snd_pcm_oss_set_channels(pcm_oss_file, res); |
| 2445 | if (res < 0) |
| 2446 | return res; |
| 2447 | return put_user(res, p); |
| 2448 | case SOUND_PCM_READ_CHANNELS: |
| 2449 | res = snd_pcm_oss_get_channels(pcm_oss_file); |
| 2450 | if (res < 0) |
| 2451 | return res; |
| 2452 | return put_user(res, p); |
| 2453 | case SOUND_PCM_WRITE_FILTER: |
| 2454 | case SOUND_PCM_READ_FILTER: |
| 2455 | return -EIO; |
| 2456 | case SNDCTL_DSP_POST: |
| 2457 | return snd_pcm_oss_post(pcm_oss_file); |
| 2458 | case SNDCTL_DSP_SUBDIVIDE: |
| 2459 | if (get_user(res, p)) |
| 2460 | return -EFAULT; |
| 2461 | res = snd_pcm_oss_set_subdivide(pcm_oss_file, res); |
| 2462 | if (res < 0) |
| 2463 | return res; |
| 2464 | return put_user(res, p); |
| 2465 | case SNDCTL_DSP_SETFRAGMENT: |
| 2466 | if (get_user(res, p)) |
| 2467 | return -EFAULT; |
| 2468 | return snd_pcm_oss_set_fragment(pcm_oss_file, res); |
| 2469 | case SNDCTL_DSP_GETFMTS: |
| 2470 | res = snd_pcm_oss_get_formats(pcm_oss_file); |
| 2471 | if (res < 0) |
| 2472 | return res; |
| 2473 | return put_user(res, p); |
| 2474 | case SNDCTL_DSP_GETOSPACE: |
| 2475 | case SNDCTL_DSP_GETISPACE: |
| 2476 | return snd_pcm_oss_get_space(pcm_oss_file, |
| 2477 | cmd == SNDCTL_DSP_GETISPACE ? |
| 2478 | SNDRV_PCM_STREAM_CAPTURE : SNDRV_PCM_STREAM_PLAYBACK, |
| 2479 | (struct audio_buf_info __user *) arg); |
| 2480 | case SNDCTL_DSP_NONBLOCK: |
| 2481 | return snd_pcm_oss_nonblock(file); |
| 2482 | case SNDCTL_DSP_GETCAPS: |
| 2483 | res = snd_pcm_oss_get_caps(pcm_oss_file); |
| 2484 | if (res < 0) |
| 2485 | return res; |
| 2486 | return put_user(res, p); |
| 2487 | case SNDCTL_DSP_GETTRIGGER: |
| 2488 | res = snd_pcm_oss_get_trigger(pcm_oss_file); |
| 2489 | if (res < 0) |
| 2490 | return res; |
| 2491 | return put_user(res, p); |
| 2492 | case SNDCTL_DSP_SETTRIGGER: |
| 2493 | if (get_user(res, p)) |
| 2494 | return -EFAULT; |
| 2495 | return snd_pcm_oss_set_trigger(pcm_oss_file, res); |
| 2496 | case SNDCTL_DSP_GETIPTR: |
| 2497 | case SNDCTL_DSP_GETOPTR: |
| 2498 | return snd_pcm_oss_get_ptr(pcm_oss_file, |
| 2499 | cmd == SNDCTL_DSP_GETIPTR ? |
| 2500 | SNDRV_PCM_STREAM_CAPTURE : SNDRV_PCM_STREAM_PLAYBACK, |
| 2501 | (struct count_info __user *) arg); |
| 2502 | case SNDCTL_DSP_MAPINBUF: |
| 2503 | case SNDCTL_DSP_MAPOUTBUF: |
| 2504 | return snd_pcm_oss_get_mapbuf(pcm_oss_file, |
| 2505 | cmd == SNDCTL_DSP_MAPINBUF ? |
| 2506 | SNDRV_PCM_STREAM_CAPTURE : SNDRV_PCM_STREAM_PLAYBACK, |
| 2507 | (struct buffmem_desc __user *) arg); |
| 2508 | case SNDCTL_DSP_SETSYNCRO: |
| 2509 | /* stop DMA now.. */ |
| 2510 | return 0; |
| 2511 | case SNDCTL_DSP_SETDUPLEX: |
| 2512 | if (snd_pcm_oss_get_caps(pcm_oss_file) & DSP_CAP_DUPLEX) |
| 2513 | return 0; |
| 2514 | return -EIO; |
| 2515 | case SNDCTL_DSP_GETODELAY: |
| 2516 | res = snd_pcm_oss_get_odelay(pcm_oss_file); |
| 2517 | if (res < 0) { |
| 2518 | /* it's for sure, some broken apps don't check for error codes */ |
| 2519 | put_user(0, p); |
| 2520 | return res; |
| 2521 | } |
| 2522 | return put_user(res, p); |
| 2523 | case SNDCTL_DSP_PROFILE: |
| 2524 | return 0; /* silently ignore */ |
| 2525 | default: |
| 2526 | snd_printd("pcm_oss: unknown command = 0x%x\n", cmd); |
| 2527 | } |
| 2528 | return -EINVAL; |
| 2529 | } |
| 2530 | |
| 2531 | #ifdef CONFIG_COMPAT |
| 2532 | /* all compatible */ |
| 2533 | #define snd_pcm_oss_ioctl_compat snd_pcm_oss_ioctl |
| 2534 | #else |
| 2535 | #define snd_pcm_oss_ioctl_compat NULL |
| 2536 | #endif |
| 2537 | |
| 2538 | static ssize_t snd_pcm_oss_read(struct file *file, char __user *buf, size_t count, loff_t *offset) |
| 2539 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2540 | struct snd_pcm_oss_file *pcm_oss_file; |
| 2541 | struct snd_pcm_substream *substream; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2542 | |
| 2543 | pcm_oss_file = file->private_data; |
| 2544 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE]; |
| 2545 | if (substream == NULL) |
| 2546 | return -ENXIO; |
Takashi Iwai | 0df63e4 | 2006-04-28 15:13:41 +0200 | [diff] [blame] | 2547 | substream->f_flags = file->f_flags & O_NONBLOCK; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2548 | #ifndef OSS_DEBUG |
| 2549 | return snd_pcm_oss_read1(substream, buf, count); |
| 2550 | #else |
| 2551 | { |
| 2552 | ssize_t res = snd_pcm_oss_read1(substream, buf, count); |
| 2553 | printk("pcm_oss: read %li bytes (returned %li bytes)\n", (long)count, (long)res); |
| 2554 | return res; |
| 2555 | } |
| 2556 | #endif |
| 2557 | } |
| 2558 | |
| 2559 | static ssize_t snd_pcm_oss_write(struct file *file, const char __user *buf, size_t count, loff_t *offset) |
| 2560 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2561 | struct snd_pcm_oss_file *pcm_oss_file; |
| 2562 | struct snd_pcm_substream *substream; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2563 | long result; |
| 2564 | |
| 2565 | pcm_oss_file = file->private_data; |
| 2566 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK]; |
| 2567 | if (substream == NULL) |
| 2568 | return -ENXIO; |
Takashi Iwai | 0df63e4 | 2006-04-28 15:13:41 +0200 | [diff] [blame] | 2569 | substream->f_flags = file->f_flags & O_NONBLOCK; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2570 | result = snd_pcm_oss_write1(substream, buf, count); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2571 | #ifdef OSS_DEBUG |
| 2572 | printk("pcm_oss: write %li bytes (wrote %li bytes)\n", (long)count, (long)result); |
| 2573 | #endif |
| 2574 | return result; |
| 2575 | } |
| 2576 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2577 | static int snd_pcm_oss_playback_ready(struct snd_pcm_substream *substream) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2578 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2579 | struct snd_pcm_runtime *runtime = substream->runtime; |
Takashi Iwai | 9c323fc | 2006-04-28 15:13:41 +0200 | [diff] [blame] | 2580 | if (atomic_read(&substream->mmap_count)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2581 | return runtime->oss.prev_hw_ptr_interrupt != runtime->hw_ptr_interrupt; |
| 2582 | else |
| 2583 | return snd_pcm_playback_avail(runtime) >= runtime->oss.period_frames; |
| 2584 | } |
| 2585 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2586 | static int snd_pcm_oss_capture_ready(struct snd_pcm_substream *substream) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2587 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2588 | struct snd_pcm_runtime *runtime = substream->runtime; |
Takashi Iwai | 9c323fc | 2006-04-28 15:13:41 +0200 | [diff] [blame] | 2589 | if (atomic_read(&substream->mmap_count)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2590 | return runtime->oss.prev_hw_ptr_interrupt != runtime->hw_ptr_interrupt; |
| 2591 | else |
| 2592 | return snd_pcm_capture_avail(runtime) >= runtime->oss.period_frames; |
| 2593 | } |
| 2594 | |
| 2595 | static unsigned int snd_pcm_oss_poll(struct file *file, poll_table * wait) |
| 2596 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2597 | struct snd_pcm_oss_file *pcm_oss_file; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2598 | unsigned int mask; |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2599 | struct snd_pcm_substream *psubstream = NULL, *csubstream = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2600 | |
| 2601 | pcm_oss_file = file->private_data; |
| 2602 | |
| 2603 | psubstream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK]; |
| 2604 | csubstream = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE]; |
| 2605 | |
| 2606 | mask = 0; |
| 2607 | if (psubstream != NULL) { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2608 | struct snd_pcm_runtime *runtime = psubstream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2609 | poll_wait(file, &runtime->sleep, wait); |
| 2610 | snd_pcm_stream_lock_irq(psubstream); |
| 2611 | if (runtime->status->state != SNDRV_PCM_STATE_DRAINING && |
| 2612 | (runtime->status->state != SNDRV_PCM_STATE_RUNNING || |
| 2613 | snd_pcm_oss_playback_ready(psubstream))) |
| 2614 | mask |= POLLOUT | POLLWRNORM; |
| 2615 | snd_pcm_stream_unlock_irq(psubstream); |
| 2616 | } |
| 2617 | if (csubstream != NULL) { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2618 | struct snd_pcm_runtime *runtime = csubstream->runtime; |
| 2619 | snd_pcm_state_t ostate; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2620 | poll_wait(file, &runtime->sleep, wait); |
| 2621 | snd_pcm_stream_lock_irq(csubstream); |
| 2622 | if ((ostate = runtime->status->state) != SNDRV_PCM_STATE_RUNNING || |
| 2623 | snd_pcm_oss_capture_ready(csubstream)) |
| 2624 | mask |= POLLIN | POLLRDNORM; |
| 2625 | snd_pcm_stream_unlock_irq(csubstream); |
| 2626 | if (ostate != SNDRV_PCM_STATE_RUNNING && runtime->oss.trigger) { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2627 | struct snd_pcm_oss_file ofile; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2628 | memset(&ofile, 0, sizeof(ofile)); |
| 2629 | ofile.streams[SNDRV_PCM_STREAM_CAPTURE] = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE]; |
| 2630 | runtime->oss.trigger = 0; |
| 2631 | snd_pcm_oss_set_trigger(&ofile, PCM_ENABLE_INPUT); |
| 2632 | } |
| 2633 | } |
| 2634 | |
| 2635 | return mask; |
| 2636 | } |
| 2637 | |
| 2638 | static int snd_pcm_oss_mmap(struct file *file, struct vm_area_struct *area) |
| 2639 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2640 | struct snd_pcm_oss_file *pcm_oss_file; |
| 2641 | struct snd_pcm_substream *substream = NULL; |
| 2642 | struct snd_pcm_runtime *runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2643 | int err; |
| 2644 | |
| 2645 | #ifdef OSS_DEBUG |
| 2646 | printk("pcm_oss: mmap begin\n"); |
| 2647 | #endif |
| 2648 | pcm_oss_file = file->private_data; |
| 2649 | switch ((area->vm_flags & (VM_READ | VM_WRITE))) { |
| 2650 | case VM_READ | VM_WRITE: |
| 2651 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK]; |
| 2652 | if (substream) |
| 2653 | break; |
| 2654 | /* Fall through */ |
| 2655 | case VM_READ: |
| 2656 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE]; |
| 2657 | break; |
| 2658 | case VM_WRITE: |
| 2659 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK]; |
| 2660 | break; |
| 2661 | default: |
| 2662 | return -EINVAL; |
| 2663 | } |
| 2664 | /* set VM_READ access as well to fix memset() routines that do |
| 2665 | reads before writes (to improve performance) */ |
| 2666 | area->vm_flags |= VM_READ; |
| 2667 | if (substream == NULL) |
| 2668 | return -ENXIO; |
| 2669 | runtime = substream->runtime; |
| 2670 | if (!(runtime->info & SNDRV_PCM_INFO_MMAP_VALID)) |
| 2671 | return -EIO; |
| 2672 | if (runtime->info & SNDRV_PCM_INFO_INTERLEAVED) |
| 2673 | runtime->access = SNDRV_PCM_ACCESS_MMAP_INTERLEAVED; |
| 2674 | else |
| 2675 | return -EIO; |
| 2676 | |
| 2677 | if (runtime->oss.params) { |
| 2678 | if ((err = snd_pcm_oss_change_params(substream)) < 0) |
| 2679 | return err; |
| 2680 | } |
Jaroslav Kysela | 21a3479 | 2006-01-13 09:12:11 +0100 | [diff] [blame] | 2681 | #ifdef CONFIG_SND_PCM_OSS_PLUGINS |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2682 | if (runtime->oss.plugin_first != NULL) |
| 2683 | return -EIO; |
Jaroslav Kysela | 21a3479 | 2006-01-13 09:12:11 +0100 | [diff] [blame] | 2684 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2685 | |
| 2686 | if (area->vm_pgoff != 0) |
| 2687 | return -EINVAL; |
| 2688 | |
| 2689 | err = snd_pcm_mmap_data(substream, file, area); |
| 2690 | if (err < 0) |
| 2691 | return err; |
| 2692 | runtime->oss.mmap_bytes = area->vm_end - area->vm_start; |
| 2693 | runtime->silence_threshold = 0; |
| 2694 | runtime->silence_size = 0; |
| 2695 | #ifdef OSS_DEBUG |
| 2696 | printk("pcm_oss: mmap ok, bytes = 0x%x\n", runtime->oss.mmap_bytes); |
| 2697 | #endif |
| 2698 | /* In mmap mode we never stop */ |
| 2699 | runtime->stop_threshold = runtime->boundary; |
| 2700 | |
| 2701 | return 0; |
| 2702 | } |
| 2703 | |
Takashi Iwai | b7d90a3 | 2006-04-25 12:56:04 +0200 | [diff] [blame] | 2704 | #ifdef CONFIG_SND_VERBOSE_PROCFS |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2705 | /* |
| 2706 | * /proc interface |
| 2707 | */ |
| 2708 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2709 | static void snd_pcm_oss_proc_read(struct snd_info_entry *entry, |
| 2710 | struct snd_info_buffer *buffer) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2711 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2712 | struct snd_pcm_str *pstr = entry->private_data; |
| 2713 | struct snd_pcm_oss_setup *setup = pstr->oss.setup_list; |
Ingo Molnar | 1a60d4c | 2006-01-16 16:29:08 +0100 | [diff] [blame] | 2714 | mutex_lock(&pstr->oss.setup_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2715 | while (setup) { |
| 2716 | snd_iprintf(buffer, "%s %u %u%s%s%s%s%s%s\n", |
| 2717 | setup->task_name, |
| 2718 | setup->periods, |
| 2719 | setup->period_size, |
| 2720 | setup->disable ? " disable" : "", |
| 2721 | setup->direct ? " direct" : "", |
| 2722 | setup->block ? " block" : "", |
| 2723 | setup->nonblock ? " non-block" : "", |
| 2724 | setup->partialfrag ? " partial-frag" : "", |
| 2725 | setup->nosilence ? " no-silence" : ""); |
| 2726 | setup = setup->next; |
| 2727 | } |
Ingo Molnar | 1a60d4c | 2006-01-16 16:29:08 +0100 | [diff] [blame] | 2728 | mutex_unlock(&pstr->oss.setup_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2729 | } |
| 2730 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2731 | static void snd_pcm_oss_proc_free_setup_list(struct snd_pcm_str * pstr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2732 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2733 | struct snd_pcm_oss_setup *setup, *setupn; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2734 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2735 | for (setup = pstr->oss.setup_list, pstr->oss.setup_list = NULL; |
| 2736 | setup; setup = setupn) { |
| 2737 | setupn = setup->next; |
| 2738 | kfree(setup->task_name); |
| 2739 | kfree(setup); |
| 2740 | } |
| 2741 | pstr->oss.setup_list = NULL; |
| 2742 | } |
| 2743 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2744 | static void snd_pcm_oss_proc_write(struct snd_info_entry *entry, |
| 2745 | struct snd_info_buffer *buffer) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2746 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2747 | struct snd_pcm_str *pstr = entry->private_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2748 | char line[128], str[32], task_name[32], *ptr; |
| 2749 | int idx1; |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2750 | struct snd_pcm_oss_setup *setup, *setup1, template; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2751 | |
| 2752 | while (!snd_info_get_line(buffer, line, sizeof(line))) { |
Ingo Molnar | 1a60d4c | 2006-01-16 16:29:08 +0100 | [diff] [blame] | 2753 | mutex_lock(&pstr->oss.setup_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2754 | memset(&template, 0, sizeof(template)); |
| 2755 | ptr = snd_info_get_str(task_name, line, sizeof(task_name)); |
| 2756 | if (!strcmp(task_name, "clear") || !strcmp(task_name, "erase")) { |
| 2757 | snd_pcm_oss_proc_free_setup_list(pstr); |
Ingo Molnar | 1a60d4c | 2006-01-16 16:29:08 +0100 | [diff] [blame] | 2758 | mutex_unlock(&pstr->oss.setup_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2759 | continue; |
| 2760 | } |
| 2761 | for (setup = pstr->oss.setup_list; setup; setup = setup->next) { |
| 2762 | if (!strcmp(setup->task_name, task_name)) { |
| 2763 | template = *setup; |
| 2764 | break; |
| 2765 | } |
| 2766 | } |
| 2767 | ptr = snd_info_get_str(str, ptr, sizeof(str)); |
| 2768 | template.periods = simple_strtoul(str, NULL, 10); |
| 2769 | ptr = snd_info_get_str(str, ptr, sizeof(str)); |
| 2770 | template.period_size = simple_strtoul(str, NULL, 10); |
| 2771 | for (idx1 = 31; idx1 >= 0; idx1--) |
| 2772 | if (template.period_size & (1 << idx1)) |
| 2773 | break; |
| 2774 | for (idx1--; idx1 >= 0; idx1--) |
| 2775 | template.period_size &= ~(1 << idx1); |
| 2776 | do { |
| 2777 | ptr = snd_info_get_str(str, ptr, sizeof(str)); |
| 2778 | if (!strcmp(str, "disable")) { |
| 2779 | template.disable = 1; |
| 2780 | } else if (!strcmp(str, "direct")) { |
| 2781 | template.direct = 1; |
| 2782 | } else if (!strcmp(str, "block")) { |
| 2783 | template.block = 1; |
| 2784 | } else if (!strcmp(str, "non-block")) { |
| 2785 | template.nonblock = 1; |
| 2786 | } else if (!strcmp(str, "partial-frag")) { |
| 2787 | template.partialfrag = 1; |
| 2788 | } else if (!strcmp(str, "no-silence")) { |
| 2789 | template.nosilence = 1; |
Takashi Iwai | 10f69f9 | 2005-09-08 13:48:34 +0200 | [diff] [blame] | 2790 | } else if (!strcmp(str, "buggy-ptr")) { |
| 2791 | template.buggyptr = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2792 | } |
| 2793 | } while (*str); |
| 2794 | if (setup == NULL) { |
Takashi Iwai | 060d77b | 2006-03-27 16:44:52 +0200 | [diff] [blame] | 2795 | setup = kmalloc(sizeof(*setup), GFP_KERNEL); |
| 2796 | if (! setup) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2797 | buffer->error = -ENOMEM; |
Takashi Iwai | 060d77b | 2006-03-27 16:44:52 +0200 | [diff] [blame] | 2798 | mutex_lock(&pstr->oss.setup_mutex); |
| 2799 | return; |
| 2800 | } |
| 2801 | if (pstr->oss.setup_list == NULL) |
| 2802 | pstr->oss.setup_list = setup; |
| 2803 | else { |
| 2804 | for (setup1 = pstr->oss.setup_list; |
| 2805 | setup1->next; setup1 = setup1->next); |
| 2806 | setup1->next = setup; |
| 2807 | } |
| 2808 | template.task_name = kstrdup(task_name, GFP_KERNEL); |
| 2809 | if (! template.task_name) { |
| 2810 | kfree(setup); |
| 2811 | buffer->error = -ENOMEM; |
| 2812 | mutex_lock(&pstr->oss.setup_mutex); |
| 2813 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2814 | } |
| 2815 | } |
Takashi Iwai | 060d77b | 2006-03-27 16:44:52 +0200 | [diff] [blame] | 2816 | *setup = template; |
Ingo Molnar | 1a60d4c | 2006-01-16 16:29:08 +0100 | [diff] [blame] | 2817 | mutex_unlock(&pstr->oss.setup_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2818 | } |
| 2819 | } |
| 2820 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2821 | static void snd_pcm_oss_proc_init(struct snd_pcm *pcm) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2822 | { |
| 2823 | int stream; |
| 2824 | for (stream = 0; stream < 2; ++stream) { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2825 | struct snd_info_entry *entry; |
| 2826 | struct snd_pcm_str *pstr = &pcm->streams[stream]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2827 | if (pstr->substream_count == 0) |
| 2828 | continue; |
| 2829 | if ((entry = snd_info_create_card_entry(pcm->card, "oss", pstr->proc_root)) != NULL) { |
| 2830 | entry->content = SNDRV_INFO_CONTENT_TEXT; |
| 2831 | entry->mode = S_IFREG | S_IRUGO | S_IWUSR; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2832 | entry->c.text.read = snd_pcm_oss_proc_read; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2833 | entry->c.text.write = snd_pcm_oss_proc_write; |
| 2834 | entry->private_data = pstr; |
| 2835 | if (snd_info_register(entry) < 0) { |
| 2836 | snd_info_free_entry(entry); |
| 2837 | entry = NULL; |
| 2838 | } |
| 2839 | } |
| 2840 | pstr->oss.proc_entry = entry; |
| 2841 | } |
| 2842 | } |
| 2843 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2844 | static void snd_pcm_oss_proc_done(struct snd_pcm *pcm) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2845 | { |
| 2846 | int stream; |
| 2847 | for (stream = 0; stream < 2; ++stream) { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2848 | struct snd_pcm_str *pstr = &pcm->streams[stream]; |
Takashi Iwai | 746d4a0 | 2006-06-23 14:37:59 +0200 | [diff] [blame] | 2849 | snd_info_free_entry(pstr->oss.proc_entry); |
| 2850 | pstr->oss.proc_entry = NULL; |
| 2851 | snd_pcm_oss_proc_free_setup_list(pstr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2852 | } |
| 2853 | } |
Takashi Iwai | b7d90a3 | 2006-04-25 12:56:04 +0200 | [diff] [blame] | 2854 | #else /* !CONFIG_SND_VERBOSE_PROCFS */ |
Takashi Iwai | 04f141a | 2005-12-01 10:43:51 +0100 | [diff] [blame] | 2855 | #define snd_pcm_oss_proc_init(pcm) |
| 2856 | #define snd_pcm_oss_proc_done(pcm) |
Takashi Iwai | b7d90a3 | 2006-04-25 12:56:04 +0200 | [diff] [blame] | 2857 | #endif /* CONFIG_SND_VERBOSE_PROCFS */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2858 | |
| 2859 | /* |
| 2860 | * ENTRY functions |
| 2861 | */ |
| 2862 | |
| 2863 | static struct file_operations snd_pcm_oss_f_reg = |
| 2864 | { |
| 2865 | .owner = THIS_MODULE, |
| 2866 | .read = snd_pcm_oss_read, |
| 2867 | .write = snd_pcm_oss_write, |
| 2868 | .open = snd_pcm_oss_open, |
| 2869 | .release = snd_pcm_oss_release, |
| 2870 | .poll = snd_pcm_oss_poll, |
| 2871 | .unlocked_ioctl = snd_pcm_oss_ioctl, |
| 2872 | .compat_ioctl = snd_pcm_oss_ioctl_compat, |
| 2873 | .mmap = snd_pcm_oss_mmap, |
| 2874 | }; |
| 2875 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2876 | static void register_oss_dsp(struct snd_pcm *pcm, int index) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2877 | { |
| 2878 | char name[128]; |
| 2879 | sprintf(name, "dsp%i%i", pcm->card->number, pcm->device); |
| 2880 | if (snd_register_oss_device(SNDRV_OSS_DEVICE_TYPE_PCM, |
Clemens Ladisch | 2af677f | 2005-11-20 14:03:48 +0100 | [diff] [blame] | 2881 | pcm->card, index, &snd_pcm_oss_f_reg, |
Clemens Ladisch | f87135f | 2005-11-20 14:06:59 +0100 | [diff] [blame] | 2882 | pcm, name) < 0) { |
Takashi Iwai | d3d579f | 2005-10-21 16:20:11 +0200 | [diff] [blame] | 2883 | snd_printk(KERN_ERR "unable to register OSS PCM device %i:%i\n", |
| 2884 | pcm->card->number, pcm->device); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2885 | } |
| 2886 | } |
| 2887 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2888 | static int snd_pcm_oss_register_minor(struct snd_pcm *pcm) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2889 | { |
| 2890 | pcm->oss.reg = 0; |
| 2891 | if (dsp_map[pcm->card->number] == (int)pcm->device) { |
| 2892 | char name[128]; |
| 2893 | int duplex; |
| 2894 | register_oss_dsp(pcm, 0); |
| 2895 | duplex = (pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream_count > 0 && |
| 2896 | pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream_count && |
| 2897 | !(pcm->info_flags & SNDRV_PCM_INFO_HALF_DUPLEX)); |
| 2898 | sprintf(name, "%s%s", pcm->name, duplex ? " (DUPLEX)" : ""); |
| 2899 | #ifdef SNDRV_OSS_INFO_DEV_AUDIO |
| 2900 | snd_oss_info_register(SNDRV_OSS_INFO_DEV_AUDIO, |
| 2901 | pcm->card->number, |
| 2902 | name); |
| 2903 | #endif |
| 2904 | pcm->oss.reg++; |
| 2905 | pcm->oss.reg_mask |= 1; |
| 2906 | } |
| 2907 | if (adsp_map[pcm->card->number] == (int)pcm->device) { |
| 2908 | register_oss_dsp(pcm, 1); |
| 2909 | pcm->oss.reg++; |
| 2910 | pcm->oss.reg_mask |= 2; |
| 2911 | } |
| 2912 | |
| 2913 | if (pcm->oss.reg) |
| 2914 | snd_pcm_oss_proc_init(pcm); |
| 2915 | |
| 2916 | return 0; |
| 2917 | } |
| 2918 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2919 | static int snd_pcm_oss_disconnect_minor(struct snd_pcm *pcm) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2920 | { |
| 2921 | if (pcm->oss.reg) { |
| 2922 | if (pcm->oss.reg_mask & 1) { |
| 2923 | pcm->oss.reg_mask &= ~1; |
| 2924 | snd_unregister_oss_device(SNDRV_OSS_DEVICE_TYPE_PCM, |
| 2925 | pcm->card, 0); |
| 2926 | } |
| 2927 | if (pcm->oss.reg_mask & 2) { |
| 2928 | pcm->oss.reg_mask &= ~2; |
| 2929 | snd_unregister_oss_device(SNDRV_OSS_DEVICE_TYPE_PCM, |
| 2930 | pcm->card, 1); |
| 2931 | } |
Takashi Iwai | c461482 | 2006-06-23 14:38:23 +0200 | [diff] [blame] | 2932 | if (dsp_map[pcm->card->number] == (int)pcm->device) { |
| 2933 | #ifdef SNDRV_OSS_INFO_DEV_AUDIO |
| 2934 | snd_oss_info_unregister(SNDRV_OSS_INFO_DEV_AUDIO, pcm->card->number); |
| 2935 | #endif |
| 2936 | } |
| 2937 | pcm->oss.reg = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2938 | } |
| 2939 | return 0; |
| 2940 | } |
| 2941 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2942 | static int snd_pcm_oss_unregister_minor(struct snd_pcm *pcm) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2943 | { |
| 2944 | snd_pcm_oss_disconnect_minor(pcm); |
Takashi Iwai | c461482 | 2006-06-23 14:38:23 +0200 | [diff] [blame] | 2945 | snd_pcm_oss_proc_done(pcm); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2946 | return 0; |
| 2947 | } |
| 2948 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2949 | static struct snd_pcm_notify snd_pcm_oss_notify = |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2950 | { |
| 2951 | .n_register = snd_pcm_oss_register_minor, |
| 2952 | .n_disconnect = snd_pcm_oss_disconnect_minor, |
| 2953 | .n_unregister = snd_pcm_oss_unregister_minor, |
| 2954 | }; |
| 2955 | |
| 2956 | static int __init alsa_pcm_oss_init(void) |
| 2957 | { |
| 2958 | int i; |
| 2959 | int err; |
| 2960 | |
| 2961 | /* check device map table */ |
| 2962 | for (i = 0; i < SNDRV_CARDS; i++) { |
| 2963 | if (dsp_map[i] < 0 || dsp_map[i] >= SNDRV_PCM_DEVICES) { |
Takashi Iwai | d3d579f | 2005-10-21 16:20:11 +0200 | [diff] [blame] | 2964 | snd_printk(KERN_ERR "invalid dsp_map[%d] = %d\n", |
| 2965 | i, dsp_map[i]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2966 | dsp_map[i] = 0; |
| 2967 | } |
| 2968 | if (adsp_map[i] < 0 || adsp_map[i] >= SNDRV_PCM_DEVICES) { |
Takashi Iwai | d3d579f | 2005-10-21 16:20:11 +0200 | [diff] [blame] | 2969 | snd_printk(KERN_ERR "invalid adsp_map[%d] = %d\n", |
| 2970 | i, adsp_map[i]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2971 | adsp_map[i] = 1; |
| 2972 | } |
| 2973 | } |
| 2974 | if ((err = snd_pcm_notify(&snd_pcm_oss_notify, 0)) < 0) |
| 2975 | return err; |
| 2976 | return 0; |
| 2977 | } |
| 2978 | |
| 2979 | static void __exit alsa_pcm_oss_exit(void) |
| 2980 | { |
| 2981 | snd_pcm_notify(&snd_pcm_oss_notify, 1); |
| 2982 | } |
| 2983 | |
| 2984 | module_init(alsa_pcm_oss_init) |
| 2985 | module_exit(alsa_pcm_oss_exit) |