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> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 31 | #include <linux/slab.h> |
| 32 | #include <linux/time.h> |
| 33 | #include <linux/vmalloc.h> |
| 34 | #include <linux/moduleparam.h> |
Paulo Marques | 543537b | 2005-06-23 00:09:02 -0700 | [diff] [blame] | 35 | #include <linux/string.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 36 | #include <sound/core.h> |
| 37 | #include <sound/minors.h> |
| 38 | #include <sound/pcm.h> |
| 39 | #include <sound/pcm_params.h> |
| 40 | #include "pcm_plugin.h" |
| 41 | #include <sound/info.h> |
| 42 | #include <linux/soundcard.h> |
| 43 | #include <sound/initval.h> |
| 44 | |
| 45 | #define OSS_ALSAEMULVER _SIOR ('M', 249, int) |
| 46 | |
Takashi Iwai | 6581f4e | 2006-05-17 17:14:51 +0200 | [diff] [blame] | 47 | static int dsp_map[SNDRV_CARDS]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 48 | static int adsp_map[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS-1)] = 1}; |
| 49 | static int nonblock_open = 1; |
| 50 | |
| 51 | MODULE_AUTHOR("Jaroslav Kysela <perex@suse.cz>, Abramo Bagnara <abramo@alsa-project.org>"); |
| 52 | MODULE_DESCRIPTION("PCM OSS emulation for ALSA."); |
| 53 | MODULE_LICENSE("GPL"); |
| 54 | module_param_array(dsp_map, int, NULL, 0444); |
| 55 | MODULE_PARM_DESC(dsp_map, "PCM device number assigned to 1st OSS device."); |
| 56 | module_param_array(adsp_map, int, NULL, 0444); |
| 57 | MODULE_PARM_DESC(adsp_map, "PCM device number assigned to 2nd OSS device."); |
| 58 | module_param(nonblock_open, bool, 0644); |
| 59 | MODULE_PARM_DESC(nonblock_open, "Don't block opening busy PCM devices."); |
| 60 | MODULE_ALIAS_SNDRV_MINOR(SNDRV_MINOR_OSS_PCM); |
| 61 | MODULE_ALIAS_SNDRV_MINOR(SNDRV_MINOR_OSS_PCM1); |
| 62 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 63 | extern int snd_mixer_oss_ioctl_card(struct snd_card *card, unsigned int cmd, unsigned long arg); |
| 64 | static int snd_pcm_oss_get_rate(struct snd_pcm_oss_file *pcm_oss_file); |
| 65 | static int snd_pcm_oss_get_channels(struct snd_pcm_oss_file *pcm_oss_file); |
| 66 | 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] | 67 | |
| 68 | static inline mm_segment_t snd_enter_user(void) |
| 69 | { |
| 70 | mm_segment_t fs = get_fs(); |
| 71 | set_fs(get_ds()); |
| 72 | return fs; |
| 73 | } |
| 74 | |
| 75 | static inline void snd_leave_user(mm_segment_t fs) |
| 76 | { |
| 77 | set_fs(fs); |
| 78 | } |
| 79 | |
Takashi Iwai | e88e8ae6 | 2006-04-28 15:13:40 +0200 | [diff] [blame] | 80 | /* |
| 81 | * helper functions to process hw_params |
| 82 | */ |
| 83 | static int snd_interval_refine_min(struct snd_interval *i, unsigned int min, int openmin) |
| 84 | { |
| 85 | int changed = 0; |
| 86 | if (i->min < min) { |
| 87 | i->min = min; |
| 88 | i->openmin = openmin; |
| 89 | changed = 1; |
| 90 | } else if (i->min == min && !i->openmin && openmin) { |
| 91 | i->openmin = 1; |
| 92 | changed = 1; |
| 93 | } |
| 94 | if (i->integer) { |
| 95 | if (i->openmin) { |
| 96 | i->min++; |
| 97 | i->openmin = 0; |
| 98 | } |
| 99 | } |
| 100 | if (snd_interval_checkempty(i)) { |
| 101 | snd_interval_none(i); |
| 102 | return -EINVAL; |
| 103 | } |
| 104 | return changed; |
| 105 | } |
| 106 | |
| 107 | static int snd_interval_refine_max(struct snd_interval *i, unsigned int max, int openmax) |
| 108 | { |
| 109 | int changed = 0; |
| 110 | if (i->max > max) { |
| 111 | i->max = max; |
| 112 | i->openmax = openmax; |
| 113 | changed = 1; |
| 114 | } else if (i->max == max && !i->openmax && openmax) { |
| 115 | i->openmax = 1; |
| 116 | changed = 1; |
| 117 | } |
| 118 | if (i->integer) { |
| 119 | if (i->openmax) { |
| 120 | i->max--; |
| 121 | i->openmax = 0; |
| 122 | } |
| 123 | } |
| 124 | if (snd_interval_checkempty(i)) { |
| 125 | snd_interval_none(i); |
| 126 | return -EINVAL; |
| 127 | } |
| 128 | return changed; |
| 129 | } |
| 130 | |
| 131 | static int snd_interval_refine_set(struct snd_interval *i, unsigned int val) |
| 132 | { |
| 133 | struct snd_interval t; |
| 134 | t.empty = 0; |
| 135 | t.min = t.max = val; |
| 136 | t.openmin = t.openmax = 0; |
| 137 | t.integer = 1; |
| 138 | return snd_interval_refine(i, &t); |
| 139 | } |
| 140 | |
| 141 | /** |
| 142 | * snd_pcm_hw_param_value_min |
| 143 | * @params: the hw_params instance |
| 144 | * @var: parameter to retrieve |
| 145 | * @dir: pointer to the direction (-1,0,1) or NULL |
| 146 | * |
| 147 | * Return the minimum value for field PAR. |
| 148 | */ |
| 149 | static unsigned int |
| 150 | snd_pcm_hw_param_value_min(const struct snd_pcm_hw_params *params, |
| 151 | snd_pcm_hw_param_t var, int *dir) |
| 152 | { |
| 153 | if (hw_is_mask(var)) { |
| 154 | if (dir) |
| 155 | *dir = 0; |
| 156 | return snd_mask_min(hw_param_mask_c(params, var)); |
| 157 | } |
| 158 | if (hw_is_interval(var)) { |
| 159 | const struct snd_interval *i = hw_param_interval_c(params, var); |
| 160 | if (dir) |
| 161 | *dir = i->openmin; |
| 162 | return snd_interval_min(i); |
| 163 | } |
| 164 | return -EINVAL; |
| 165 | } |
| 166 | |
| 167 | /** |
| 168 | * snd_pcm_hw_param_value_max |
| 169 | * @params: the hw_params instance |
| 170 | * @var: parameter to retrieve |
| 171 | * @dir: pointer to the direction (-1,0,1) or NULL |
| 172 | * |
| 173 | * Return the maximum value for field PAR. |
| 174 | */ |
| 175 | static unsigned int |
| 176 | snd_pcm_hw_param_value_max(const struct snd_pcm_hw_params *params, |
| 177 | snd_pcm_hw_param_t var, int *dir) |
| 178 | { |
| 179 | if (hw_is_mask(var)) { |
| 180 | if (dir) |
| 181 | *dir = 0; |
| 182 | return snd_mask_max(hw_param_mask_c(params, var)); |
| 183 | } |
| 184 | if (hw_is_interval(var)) { |
| 185 | const struct snd_interval *i = hw_param_interval_c(params, var); |
| 186 | if (dir) |
| 187 | *dir = - (int) i->openmax; |
| 188 | return snd_interval_max(i); |
| 189 | } |
| 190 | return -EINVAL; |
| 191 | } |
| 192 | |
| 193 | static int _snd_pcm_hw_param_mask(struct snd_pcm_hw_params *params, |
| 194 | snd_pcm_hw_param_t var, |
| 195 | const struct snd_mask *val) |
| 196 | { |
| 197 | int changed; |
| 198 | changed = snd_mask_refine(hw_param_mask(params, var), val); |
| 199 | if (changed) { |
| 200 | params->cmask |= 1 << var; |
| 201 | params->rmask |= 1 << var; |
| 202 | } |
| 203 | return changed; |
| 204 | } |
| 205 | |
| 206 | static int snd_pcm_hw_param_mask(struct snd_pcm_substream *pcm, |
| 207 | struct snd_pcm_hw_params *params, |
| 208 | snd_pcm_hw_param_t var, |
| 209 | const struct snd_mask *val) |
| 210 | { |
| 211 | int changed = _snd_pcm_hw_param_mask(params, var, val); |
| 212 | if (changed < 0) |
| 213 | return changed; |
| 214 | if (params->rmask) { |
| 215 | int err = snd_pcm_hw_refine(pcm, params); |
| 216 | if (err < 0) |
| 217 | return err; |
| 218 | } |
| 219 | return 0; |
| 220 | } |
| 221 | |
| 222 | static int _snd_pcm_hw_param_min(struct snd_pcm_hw_params *params, |
| 223 | snd_pcm_hw_param_t var, unsigned int val, |
| 224 | int dir) |
| 225 | { |
| 226 | int changed; |
| 227 | int open = 0; |
| 228 | if (dir) { |
| 229 | if (dir > 0) { |
| 230 | open = 1; |
| 231 | } else if (dir < 0) { |
| 232 | if (val > 0) { |
| 233 | open = 1; |
| 234 | val--; |
| 235 | } |
| 236 | } |
| 237 | } |
| 238 | if (hw_is_mask(var)) |
| 239 | changed = snd_mask_refine_min(hw_param_mask(params, var), |
| 240 | val + !!open); |
| 241 | else if (hw_is_interval(var)) |
| 242 | changed = snd_interval_refine_min(hw_param_interval(params, var), |
| 243 | val, open); |
| 244 | else |
| 245 | return -EINVAL; |
| 246 | if (changed) { |
| 247 | params->cmask |= 1 << var; |
| 248 | params->rmask |= 1 << var; |
| 249 | } |
| 250 | return changed; |
| 251 | } |
| 252 | |
| 253 | /** |
| 254 | * snd_pcm_hw_param_min |
| 255 | * @pcm: PCM instance |
| 256 | * @params: the hw_params instance |
| 257 | * @var: parameter to retrieve |
| 258 | * @val: minimal value |
| 259 | * @dir: pointer to the direction (-1,0,1) or NULL |
| 260 | * |
| 261 | * Inside configuration space defined by PARAMS remove from PAR all |
| 262 | * values < VAL. Reduce configuration space accordingly. |
| 263 | * Return new minimum or -EINVAL if the configuration space is empty |
| 264 | */ |
| 265 | static int snd_pcm_hw_param_min(struct snd_pcm_substream *pcm, |
| 266 | struct snd_pcm_hw_params *params, |
| 267 | snd_pcm_hw_param_t var, unsigned int val, |
| 268 | int *dir) |
| 269 | { |
| 270 | int changed = _snd_pcm_hw_param_min(params, var, val, dir ? *dir : 0); |
| 271 | if (changed < 0) |
| 272 | return changed; |
| 273 | if (params->rmask) { |
| 274 | int err = snd_pcm_hw_refine(pcm, params); |
| 275 | if (err < 0) |
| 276 | return err; |
| 277 | } |
| 278 | return snd_pcm_hw_param_value_min(params, var, dir); |
| 279 | } |
| 280 | |
| 281 | static int _snd_pcm_hw_param_max(struct snd_pcm_hw_params *params, |
| 282 | snd_pcm_hw_param_t var, unsigned int val, |
| 283 | int dir) |
| 284 | { |
| 285 | int changed; |
| 286 | int open = 0; |
| 287 | if (dir) { |
| 288 | if (dir < 0) { |
| 289 | open = 1; |
| 290 | } else if (dir > 0) { |
| 291 | open = 1; |
| 292 | val++; |
| 293 | } |
| 294 | } |
| 295 | if (hw_is_mask(var)) { |
| 296 | if (val == 0 && open) { |
| 297 | snd_mask_none(hw_param_mask(params, var)); |
| 298 | changed = -EINVAL; |
| 299 | } else |
| 300 | changed = snd_mask_refine_max(hw_param_mask(params, var), |
| 301 | val - !!open); |
| 302 | } else if (hw_is_interval(var)) |
| 303 | changed = snd_interval_refine_max(hw_param_interval(params, var), |
| 304 | val, open); |
| 305 | else |
| 306 | return -EINVAL; |
| 307 | if (changed) { |
| 308 | params->cmask |= 1 << var; |
| 309 | params->rmask |= 1 << var; |
| 310 | } |
| 311 | return changed; |
| 312 | } |
| 313 | |
| 314 | /** |
| 315 | * snd_pcm_hw_param_max |
| 316 | * @pcm: PCM instance |
| 317 | * @params: the hw_params instance |
| 318 | * @var: parameter to retrieve |
| 319 | * @val: maximal value |
| 320 | * @dir: pointer to the direction (-1,0,1) or NULL |
| 321 | * |
| 322 | * Inside configuration space defined by PARAMS remove from PAR all |
| 323 | * values >= VAL + 1. Reduce configuration space accordingly. |
| 324 | * Return new maximum or -EINVAL if the configuration space is empty |
| 325 | */ |
| 326 | static int snd_pcm_hw_param_max(struct snd_pcm_substream *pcm, |
| 327 | struct snd_pcm_hw_params *params, |
| 328 | snd_pcm_hw_param_t var, unsigned int val, |
| 329 | int *dir) |
| 330 | { |
| 331 | int changed = _snd_pcm_hw_param_max(params, var, val, dir ? *dir : 0); |
| 332 | if (changed < 0) |
| 333 | return changed; |
| 334 | if (params->rmask) { |
| 335 | int err = snd_pcm_hw_refine(pcm, params); |
| 336 | if (err < 0) |
| 337 | return err; |
| 338 | } |
| 339 | return snd_pcm_hw_param_value_max(params, var, dir); |
| 340 | } |
| 341 | |
| 342 | static int boundary_sub(int a, int adir, |
| 343 | int b, int bdir, |
| 344 | int *c, int *cdir) |
| 345 | { |
| 346 | adir = adir < 0 ? -1 : (adir > 0 ? 1 : 0); |
| 347 | bdir = bdir < 0 ? -1 : (bdir > 0 ? 1 : 0); |
| 348 | *c = a - b; |
| 349 | *cdir = adir - bdir; |
| 350 | if (*cdir == -2) { |
| 351 | (*c)--; |
| 352 | } else if (*cdir == 2) { |
| 353 | (*c)++; |
| 354 | } |
| 355 | return 0; |
| 356 | } |
| 357 | |
| 358 | static int boundary_lt(unsigned int a, int adir, |
| 359 | unsigned int b, int bdir) |
| 360 | { |
| 361 | if (adir < 0) { |
| 362 | a--; |
| 363 | adir = 1; |
| 364 | } else if (adir > 0) |
| 365 | adir = 1; |
| 366 | if (bdir < 0) { |
| 367 | b--; |
| 368 | bdir = 1; |
| 369 | } else if (bdir > 0) |
| 370 | bdir = 1; |
| 371 | return a < b || (a == b && adir < bdir); |
| 372 | } |
| 373 | |
| 374 | /* Return 1 if min is nearer to best than max */ |
| 375 | static int boundary_nearer(int min, int mindir, |
| 376 | int best, int bestdir, |
| 377 | int max, int maxdir) |
| 378 | { |
| 379 | int dmin, dmindir; |
| 380 | int dmax, dmaxdir; |
| 381 | boundary_sub(best, bestdir, min, mindir, &dmin, &dmindir); |
| 382 | boundary_sub(max, maxdir, best, bestdir, &dmax, &dmaxdir); |
| 383 | return boundary_lt(dmin, dmindir, dmax, dmaxdir); |
| 384 | } |
| 385 | |
| 386 | /** |
| 387 | * snd_pcm_hw_param_near |
| 388 | * @pcm: PCM instance |
| 389 | * @params: the hw_params instance |
| 390 | * @var: parameter to retrieve |
| 391 | * @best: value to set |
| 392 | * @dir: pointer to the direction (-1,0,1) or NULL |
| 393 | * |
| 394 | * Inside configuration space defined by PARAMS set PAR to the available value |
| 395 | * nearest to VAL. Reduce configuration space accordingly. |
| 396 | * This function cannot be called for SNDRV_PCM_HW_PARAM_ACCESS, |
| 397 | * SNDRV_PCM_HW_PARAM_FORMAT, SNDRV_PCM_HW_PARAM_SUBFORMAT. |
| 398 | * Return the value found. |
| 399 | */ |
| 400 | static int snd_pcm_hw_param_near(struct snd_pcm_substream *pcm, |
| 401 | struct snd_pcm_hw_params *params, |
| 402 | snd_pcm_hw_param_t var, unsigned int best, |
| 403 | int *dir) |
| 404 | { |
| 405 | struct snd_pcm_hw_params *save = NULL; |
| 406 | int v; |
| 407 | unsigned int saved_min; |
| 408 | int last = 0; |
| 409 | int min, max; |
| 410 | int mindir, maxdir; |
| 411 | int valdir = dir ? *dir : 0; |
| 412 | /* FIXME */ |
| 413 | if (best > INT_MAX) |
| 414 | best = INT_MAX; |
| 415 | min = max = best; |
| 416 | mindir = maxdir = valdir; |
| 417 | if (maxdir > 0) |
| 418 | maxdir = 0; |
| 419 | else if (maxdir == 0) |
| 420 | maxdir = -1; |
| 421 | else { |
| 422 | maxdir = 1; |
| 423 | max--; |
| 424 | } |
| 425 | save = kmalloc(sizeof(*save), GFP_KERNEL); |
| 426 | if (save == NULL) |
| 427 | return -ENOMEM; |
| 428 | *save = *params; |
| 429 | saved_min = min; |
| 430 | min = snd_pcm_hw_param_min(pcm, params, var, min, &mindir); |
| 431 | if (min >= 0) { |
| 432 | struct snd_pcm_hw_params *params1; |
| 433 | if (max < 0) |
| 434 | goto _end; |
| 435 | if ((unsigned int)min == saved_min && mindir == valdir) |
| 436 | goto _end; |
| 437 | params1 = kmalloc(sizeof(*params1), GFP_KERNEL); |
| 438 | if (params1 == NULL) { |
| 439 | kfree(save); |
| 440 | return -ENOMEM; |
| 441 | } |
| 442 | *params1 = *save; |
| 443 | max = snd_pcm_hw_param_max(pcm, params1, var, max, &maxdir); |
| 444 | if (max < 0) { |
| 445 | kfree(params1); |
| 446 | goto _end; |
| 447 | } |
| 448 | if (boundary_nearer(max, maxdir, best, valdir, min, mindir)) { |
| 449 | *params = *params1; |
| 450 | last = 1; |
| 451 | } |
| 452 | kfree(params1); |
| 453 | } else { |
| 454 | *params = *save; |
| 455 | max = snd_pcm_hw_param_max(pcm, params, var, max, &maxdir); |
| 456 | snd_assert(max >= 0, return -EINVAL); |
| 457 | last = 1; |
| 458 | } |
| 459 | _end: |
| 460 | kfree(save); |
| 461 | if (last) |
| 462 | v = snd_pcm_hw_param_last(pcm, params, var, dir); |
| 463 | else |
| 464 | v = snd_pcm_hw_param_first(pcm, params, var, dir); |
| 465 | snd_assert(v >= 0, return -EINVAL); |
| 466 | return v; |
| 467 | } |
| 468 | |
| 469 | static int _snd_pcm_hw_param_set(struct snd_pcm_hw_params *params, |
| 470 | snd_pcm_hw_param_t var, unsigned int val, |
| 471 | int dir) |
| 472 | { |
| 473 | int changed; |
| 474 | if (hw_is_mask(var)) { |
| 475 | struct snd_mask *m = hw_param_mask(params, var); |
| 476 | if (val == 0 && dir < 0) { |
| 477 | changed = -EINVAL; |
| 478 | snd_mask_none(m); |
| 479 | } else { |
| 480 | if (dir > 0) |
| 481 | val++; |
| 482 | else if (dir < 0) |
| 483 | val--; |
| 484 | changed = snd_mask_refine_set(hw_param_mask(params, var), val); |
| 485 | } |
| 486 | } else if (hw_is_interval(var)) { |
| 487 | struct snd_interval *i = hw_param_interval(params, var); |
| 488 | if (val == 0 && dir < 0) { |
| 489 | changed = -EINVAL; |
| 490 | snd_interval_none(i); |
| 491 | } else if (dir == 0) |
| 492 | changed = snd_interval_refine_set(i, val); |
| 493 | else { |
| 494 | struct snd_interval t; |
| 495 | t.openmin = 1; |
| 496 | t.openmax = 1; |
| 497 | t.empty = 0; |
| 498 | t.integer = 0; |
| 499 | if (dir < 0) { |
| 500 | t.min = val - 1; |
| 501 | t.max = val; |
| 502 | } else { |
| 503 | t.min = val; |
| 504 | t.max = val+1; |
| 505 | } |
| 506 | changed = snd_interval_refine(i, &t); |
| 507 | } |
| 508 | } else |
| 509 | return -EINVAL; |
| 510 | if (changed) { |
| 511 | params->cmask |= 1 << var; |
| 512 | params->rmask |= 1 << var; |
| 513 | } |
| 514 | return changed; |
| 515 | } |
| 516 | |
| 517 | /** |
| 518 | * snd_pcm_hw_param_set |
| 519 | * @pcm: PCM instance |
| 520 | * @params: the hw_params instance |
| 521 | * @var: parameter to retrieve |
| 522 | * @val: value to set |
| 523 | * @dir: pointer to the direction (-1,0,1) or NULL |
| 524 | * |
| 525 | * Inside configuration space defined by PARAMS remove from PAR all |
| 526 | * values != VAL. Reduce configuration space accordingly. |
| 527 | * Return VAL or -EINVAL if the configuration space is empty |
| 528 | */ |
| 529 | static int snd_pcm_hw_param_set(struct snd_pcm_substream *pcm, |
| 530 | struct snd_pcm_hw_params *params, |
| 531 | snd_pcm_hw_param_t var, unsigned int val, |
| 532 | int dir) |
| 533 | { |
| 534 | int changed = _snd_pcm_hw_param_set(params, var, val, dir); |
| 535 | if (changed < 0) |
| 536 | return changed; |
| 537 | if (params->rmask) { |
| 538 | int err = snd_pcm_hw_refine(pcm, params); |
| 539 | if (err < 0) |
| 540 | return err; |
| 541 | } |
| 542 | return snd_pcm_hw_param_value(params, var, NULL); |
| 543 | } |
| 544 | |
| 545 | static int _snd_pcm_hw_param_setinteger(struct snd_pcm_hw_params *params, |
| 546 | snd_pcm_hw_param_t var) |
| 547 | { |
| 548 | int changed; |
| 549 | changed = snd_interval_setinteger(hw_param_interval(params, var)); |
| 550 | if (changed) { |
| 551 | params->cmask |= 1 << var; |
| 552 | params->rmask |= 1 << var; |
| 553 | } |
| 554 | return changed; |
| 555 | } |
| 556 | |
| 557 | /* |
| 558 | * plugin |
| 559 | */ |
| 560 | |
Jaroslav Kysela | 21a3479 | 2006-01-13 09:12:11 +0100 | [diff] [blame] | 561 | #ifdef CONFIG_SND_PCM_OSS_PLUGINS |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 562 | static int snd_pcm_oss_plugin_clear(struct snd_pcm_substream *substream) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 563 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 564 | struct snd_pcm_runtime *runtime = substream->runtime; |
| 565 | struct snd_pcm_plugin *plugin, *next; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 566 | |
| 567 | plugin = runtime->oss.plugin_first; |
| 568 | while (plugin) { |
| 569 | next = plugin->next; |
| 570 | snd_pcm_plugin_free(plugin); |
| 571 | plugin = next; |
| 572 | } |
| 573 | runtime->oss.plugin_first = runtime->oss.plugin_last = NULL; |
| 574 | return 0; |
| 575 | } |
| 576 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 577 | static int snd_pcm_plugin_insert(struct snd_pcm_plugin *plugin) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 578 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 579 | struct snd_pcm_runtime *runtime = plugin->plug->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 580 | plugin->next = runtime->oss.plugin_first; |
| 581 | plugin->prev = NULL; |
| 582 | if (runtime->oss.plugin_first) { |
| 583 | runtime->oss.plugin_first->prev = plugin; |
| 584 | runtime->oss.plugin_first = plugin; |
| 585 | } else { |
| 586 | runtime->oss.plugin_last = |
| 587 | runtime->oss.plugin_first = plugin; |
| 588 | } |
| 589 | return 0; |
| 590 | } |
| 591 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 592 | int snd_pcm_plugin_append(struct snd_pcm_plugin *plugin) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 593 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 594 | struct snd_pcm_runtime *runtime = plugin->plug->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 595 | plugin->next = NULL; |
| 596 | plugin->prev = runtime->oss.plugin_last; |
| 597 | if (runtime->oss.plugin_last) { |
| 598 | runtime->oss.plugin_last->next = plugin; |
| 599 | runtime->oss.plugin_last = plugin; |
| 600 | } else { |
| 601 | runtime->oss.plugin_last = |
| 602 | runtime->oss.plugin_first = plugin; |
| 603 | } |
| 604 | return 0; |
| 605 | } |
Jaroslav Kysela | 21a3479 | 2006-01-13 09:12:11 +0100 | [diff] [blame] | 606 | #endif /* CONFIG_SND_PCM_OSS_PLUGINS */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 607 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 608 | 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] | 609 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 610 | struct snd_pcm_runtime *runtime = substream->runtime; |
Jaroslav Kysela | af08161 | 2005-05-27 11:15:20 +0200 | [diff] [blame] | 611 | long buffer_size = snd_pcm_lib_buffer_bytes(substream); |
Jaroslav Kysela | bfc5bdd | 2005-05-27 11:12:35 +0200 | [diff] [blame] | 612 | long bytes = frames_to_bytes(runtime, frames); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 613 | if (buffer_size == runtime->oss.buffer_bytes) |
Jaroslav Kysela | bfc5bdd | 2005-05-27 11:12:35 +0200 | [diff] [blame] | 614 | return bytes; |
Takashi Iwai | cdc5c53 | 2005-05-27 12:40:52 +0200 | [diff] [blame] | 615 | #if BITS_PER_LONG >= 64 |
| 616 | return runtime->oss.buffer_bytes * bytes / buffer_size; |
| 617 | #else |
| 618 | { |
| 619 | u64 bsize = (u64)runtime->oss.buffer_bytes * (u64)bytes; |
| 620 | u32 rem; |
| 621 | div64_32(&bsize, buffer_size, &rem); |
| 622 | return (long)bsize; |
| 623 | } |
| 624 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 625 | } |
| 626 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 627 | 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] | 628 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 629 | struct snd_pcm_runtime *runtime = substream->runtime; |
Jaroslav Kysela | af08161 | 2005-05-27 11:15:20 +0200 | [diff] [blame] | 630 | long buffer_size = snd_pcm_lib_buffer_bytes(substream); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 631 | if (buffer_size == runtime->oss.buffer_bytes) |
| 632 | return bytes_to_frames(runtime, bytes); |
| 633 | return bytes_to_frames(runtime, (buffer_size * bytes) / runtime->oss.buffer_bytes); |
| 634 | } |
| 635 | |
| 636 | static int snd_pcm_oss_format_from(int format) |
| 637 | { |
| 638 | switch (format) { |
| 639 | case AFMT_MU_LAW: return SNDRV_PCM_FORMAT_MU_LAW; |
| 640 | case AFMT_A_LAW: return SNDRV_PCM_FORMAT_A_LAW; |
| 641 | case AFMT_IMA_ADPCM: return SNDRV_PCM_FORMAT_IMA_ADPCM; |
| 642 | case AFMT_U8: return SNDRV_PCM_FORMAT_U8; |
| 643 | case AFMT_S16_LE: return SNDRV_PCM_FORMAT_S16_LE; |
| 644 | case AFMT_S16_BE: return SNDRV_PCM_FORMAT_S16_BE; |
| 645 | case AFMT_S8: return SNDRV_PCM_FORMAT_S8; |
| 646 | case AFMT_U16_LE: return SNDRV_PCM_FORMAT_U16_LE; |
| 647 | case AFMT_U16_BE: return SNDRV_PCM_FORMAT_U16_BE; |
| 648 | case AFMT_MPEG: return SNDRV_PCM_FORMAT_MPEG; |
| 649 | default: return SNDRV_PCM_FORMAT_U8; |
| 650 | } |
| 651 | } |
| 652 | |
| 653 | static int snd_pcm_oss_format_to(int format) |
| 654 | { |
| 655 | switch (format) { |
| 656 | case SNDRV_PCM_FORMAT_MU_LAW: return AFMT_MU_LAW; |
| 657 | case SNDRV_PCM_FORMAT_A_LAW: return AFMT_A_LAW; |
| 658 | case SNDRV_PCM_FORMAT_IMA_ADPCM: return AFMT_IMA_ADPCM; |
| 659 | case SNDRV_PCM_FORMAT_U8: return AFMT_U8; |
| 660 | case SNDRV_PCM_FORMAT_S16_LE: return AFMT_S16_LE; |
| 661 | case SNDRV_PCM_FORMAT_S16_BE: return AFMT_S16_BE; |
| 662 | case SNDRV_PCM_FORMAT_S8: return AFMT_S8; |
| 663 | case SNDRV_PCM_FORMAT_U16_LE: return AFMT_U16_LE; |
| 664 | case SNDRV_PCM_FORMAT_U16_BE: return AFMT_U16_BE; |
| 665 | case SNDRV_PCM_FORMAT_MPEG: return AFMT_MPEG; |
| 666 | default: return -EINVAL; |
| 667 | } |
| 668 | } |
| 669 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 670 | static int snd_pcm_oss_period_size(struct snd_pcm_substream *substream, |
| 671 | struct snd_pcm_hw_params *oss_params, |
| 672 | struct snd_pcm_hw_params *slave_params) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 673 | { |
| 674 | size_t s; |
| 675 | size_t oss_buffer_size, oss_period_size, oss_periods; |
| 676 | size_t min_period_size, max_period_size; |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 677 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 678 | size_t oss_frame_size; |
| 679 | |
| 680 | oss_frame_size = snd_pcm_format_physical_width(params_format(oss_params)) * |
| 681 | params_channels(oss_params) / 8; |
| 682 | |
| 683 | oss_buffer_size = snd_pcm_plug_client_size(substream, |
| 684 | snd_pcm_hw_param_value_max(slave_params, SNDRV_PCM_HW_PARAM_BUFFER_SIZE, NULL)) * oss_frame_size; |
| 685 | oss_buffer_size = 1 << ld2(oss_buffer_size); |
Takashi Iwai | 9c323fc | 2006-04-28 15:13:41 +0200 | [diff] [blame] | 686 | if (atomic_read(&substream->mmap_count)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 687 | if (oss_buffer_size > runtime->oss.mmap_bytes) |
| 688 | oss_buffer_size = runtime->oss.mmap_bytes; |
| 689 | } |
| 690 | |
Takashi Iwai | 060d77b | 2006-03-27 16:44:52 +0200 | [diff] [blame] | 691 | if (substream->oss.setup.period_size > 16) |
| 692 | oss_period_size = substream->oss.setup.period_size; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 693 | else if (runtime->oss.fragshift) { |
| 694 | oss_period_size = 1 << runtime->oss.fragshift; |
| 695 | if (oss_period_size > oss_buffer_size / 2) |
| 696 | oss_period_size = oss_buffer_size / 2; |
| 697 | } else { |
| 698 | int sd; |
| 699 | size_t bytes_per_sec = params_rate(oss_params) * snd_pcm_format_physical_width(params_format(oss_params)) * params_channels(oss_params) / 8; |
| 700 | |
| 701 | oss_period_size = oss_buffer_size; |
| 702 | do { |
| 703 | oss_period_size /= 2; |
| 704 | } while (oss_period_size > bytes_per_sec); |
| 705 | if (runtime->oss.subdivision == 0) { |
| 706 | sd = 4; |
| 707 | if (oss_period_size / sd > 4096) |
| 708 | sd *= 2; |
| 709 | if (oss_period_size / sd < 4096) |
| 710 | sd = 1; |
| 711 | } else |
| 712 | sd = runtime->oss.subdivision; |
| 713 | oss_period_size /= sd; |
| 714 | if (oss_period_size < 16) |
| 715 | oss_period_size = 16; |
| 716 | } |
| 717 | |
| 718 | min_period_size = snd_pcm_plug_client_size(substream, |
| 719 | snd_pcm_hw_param_value_min(slave_params, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, NULL)); |
| 720 | min_period_size *= oss_frame_size; |
| 721 | min_period_size = 1 << (ld2(min_period_size - 1) + 1); |
| 722 | if (oss_period_size < min_period_size) |
| 723 | oss_period_size = min_period_size; |
| 724 | |
| 725 | max_period_size = snd_pcm_plug_client_size(substream, |
| 726 | snd_pcm_hw_param_value_max(slave_params, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, NULL)); |
| 727 | max_period_size *= oss_frame_size; |
| 728 | max_period_size = 1 << ld2(max_period_size); |
| 729 | if (oss_period_size > max_period_size) |
| 730 | oss_period_size = max_period_size; |
| 731 | |
| 732 | oss_periods = oss_buffer_size / oss_period_size; |
| 733 | |
Takashi Iwai | 060d77b | 2006-03-27 16:44:52 +0200 | [diff] [blame] | 734 | if (substream->oss.setup.periods > 1) |
| 735 | oss_periods = substream->oss.setup.periods; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 736 | |
| 737 | s = snd_pcm_hw_param_value_max(slave_params, SNDRV_PCM_HW_PARAM_PERIODS, NULL); |
| 738 | if (runtime->oss.maxfrags && s > runtime->oss.maxfrags) |
| 739 | s = runtime->oss.maxfrags; |
| 740 | if (oss_periods > s) |
| 741 | oss_periods = s; |
| 742 | |
| 743 | s = snd_pcm_hw_param_value_min(slave_params, SNDRV_PCM_HW_PARAM_PERIODS, NULL); |
| 744 | if (s < 2) |
| 745 | s = 2; |
| 746 | if (oss_periods < s) |
| 747 | oss_periods = s; |
| 748 | |
| 749 | while (oss_period_size * oss_periods > oss_buffer_size) |
| 750 | oss_period_size /= 2; |
| 751 | |
| 752 | snd_assert(oss_period_size >= 16, return -EINVAL); |
| 753 | runtime->oss.period_bytes = oss_period_size; |
| 754 | runtime->oss.period_frames = 1; |
| 755 | runtime->oss.periods = oss_periods; |
| 756 | return 0; |
| 757 | } |
| 758 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 759 | static int choose_rate(struct snd_pcm_substream *substream, |
| 760 | struct snd_pcm_hw_params *params, unsigned int best_rate) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 761 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 762 | struct snd_interval *it; |
| 763 | struct snd_pcm_hw_params *save; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 764 | unsigned int rate, prev; |
| 765 | |
| 766 | save = kmalloc(sizeof(*save), GFP_KERNEL); |
| 767 | if (save == NULL) |
| 768 | return -ENOMEM; |
| 769 | *save = *params; |
| 770 | it = hw_param_interval(save, SNDRV_PCM_HW_PARAM_RATE); |
| 771 | |
| 772 | /* try multiples of the best rate */ |
| 773 | rate = best_rate; |
| 774 | for (;;) { |
| 775 | if (it->max < rate || (it->max == rate && it->openmax)) |
| 776 | break; |
| 777 | if (it->min < rate || (it->min == rate && !it->openmin)) { |
| 778 | int ret; |
| 779 | ret = snd_pcm_hw_param_set(substream, params, |
| 780 | SNDRV_PCM_HW_PARAM_RATE, |
| 781 | rate, 0); |
| 782 | if (ret == (int)rate) { |
| 783 | kfree(save); |
| 784 | return rate; |
| 785 | } |
| 786 | *params = *save; |
| 787 | } |
| 788 | prev = rate; |
| 789 | rate += best_rate; |
| 790 | if (rate <= prev) |
| 791 | break; |
| 792 | } |
| 793 | |
| 794 | /* not found, use the nearest rate */ |
| 795 | kfree(save); |
| 796 | return snd_pcm_hw_param_near(substream, params, SNDRV_PCM_HW_PARAM_RATE, best_rate, NULL); |
| 797 | } |
| 798 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 799 | static int snd_pcm_oss_change_params(struct snd_pcm_substream *substream) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 800 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 801 | struct snd_pcm_runtime *runtime = substream->runtime; |
| 802 | struct snd_pcm_hw_params *params, *sparams; |
| 803 | struct snd_pcm_sw_params *sw_params; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 804 | ssize_t oss_buffer_size, oss_period_size; |
| 805 | size_t oss_frame_size; |
| 806 | int err; |
| 807 | int direct; |
| 808 | int format, sformat, n; |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 809 | struct snd_mask sformat_mask; |
| 810 | struct snd_mask mask; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 811 | |
Takashi Iwai | e3a5d59 | 2006-11-14 13:03:19 +0100 | [diff] [blame] | 812 | if (mutex_lock_interruptible(&runtime->oss.params_lock)) |
| 813 | return -EINTR; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 814 | sw_params = kmalloc(sizeof(*sw_params), GFP_KERNEL); |
| 815 | params = kmalloc(sizeof(*params), GFP_KERNEL); |
| 816 | sparams = kmalloc(sizeof(*sparams), GFP_KERNEL); |
| 817 | if (!sw_params || !params || !sparams) { |
| 818 | snd_printd("No memory\n"); |
| 819 | err = -ENOMEM; |
| 820 | goto failure; |
| 821 | } |
| 822 | |
Takashi Iwai | 9c323fc | 2006-04-28 15:13:41 +0200 | [diff] [blame] | 823 | if (atomic_read(&substream->mmap_count)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 824 | direct = 1; |
Takashi Iwai | 060d77b | 2006-03-27 16:44:52 +0200 | [diff] [blame] | 825 | else |
| 826 | direct = substream->oss.setup.direct; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 827 | |
| 828 | _snd_pcm_hw_params_any(sparams); |
| 829 | _snd_pcm_hw_param_setinteger(sparams, SNDRV_PCM_HW_PARAM_PERIODS); |
| 830 | _snd_pcm_hw_param_min(sparams, SNDRV_PCM_HW_PARAM_PERIODS, 2, 0); |
| 831 | snd_mask_none(&mask); |
Takashi Iwai | 9c323fc | 2006-04-28 15:13:41 +0200 | [diff] [blame] | 832 | if (atomic_read(&substream->mmap_count)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 833 | snd_mask_set(&mask, SNDRV_PCM_ACCESS_MMAP_INTERLEAVED); |
| 834 | else { |
| 835 | snd_mask_set(&mask, SNDRV_PCM_ACCESS_RW_INTERLEAVED); |
| 836 | if (!direct) |
| 837 | snd_mask_set(&mask, SNDRV_PCM_ACCESS_RW_NONINTERLEAVED); |
| 838 | } |
| 839 | err = snd_pcm_hw_param_mask(substream, sparams, SNDRV_PCM_HW_PARAM_ACCESS, &mask); |
| 840 | if (err < 0) { |
| 841 | snd_printd("No usable accesses\n"); |
| 842 | err = -EINVAL; |
| 843 | goto failure; |
| 844 | } |
| 845 | choose_rate(substream, sparams, runtime->oss.rate); |
| 846 | snd_pcm_hw_param_near(substream, sparams, SNDRV_PCM_HW_PARAM_CHANNELS, runtime->oss.channels, NULL); |
| 847 | |
| 848 | format = snd_pcm_oss_format_from(runtime->oss.format); |
| 849 | |
| 850 | sformat_mask = *hw_param_mask(sparams, SNDRV_PCM_HW_PARAM_FORMAT); |
| 851 | if (direct) |
| 852 | sformat = format; |
| 853 | else |
| 854 | sformat = snd_pcm_plug_slave_format(format, &sformat_mask); |
| 855 | |
| 856 | if (sformat < 0 || !snd_mask_test(&sformat_mask, sformat)) { |
| 857 | for (sformat = 0; sformat <= SNDRV_PCM_FORMAT_LAST; sformat++) { |
| 858 | if (snd_mask_test(&sformat_mask, sformat) && |
| 859 | snd_pcm_oss_format_to(sformat) >= 0) |
| 860 | break; |
| 861 | } |
| 862 | if (sformat > SNDRV_PCM_FORMAT_LAST) { |
| 863 | snd_printd("Cannot find a format!!!\n"); |
| 864 | err = -EINVAL; |
| 865 | goto failure; |
| 866 | } |
| 867 | } |
| 868 | err = _snd_pcm_hw_param_set(sparams, SNDRV_PCM_HW_PARAM_FORMAT, sformat, 0); |
| 869 | snd_assert(err >= 0, goto failure); |
| 870 | |
| 871 | if (direct) { |
| 872 | memcpy(params, sparams, sizeof(*params)); |
| 873 | } else { |
| 874 | _snd_pcm_hw_params_any(params); |
| 875 | _snd_pcm_hw_param_set(params, SNDRV_PCM_HW_PARAM_ACCESS, |
| 876 | SNDRV_PCM_ACCESS_RW_INTERLEAVED, 0); |
| 877 | _snd_pcm_hw_param_set(params, SNDRV_PCM_HW_PARAM_FORMAT, |
| 878 | snd_pcm_oss_format_from(runtime->oss.format), 0); |
| 879 | _snd_pcm_hw_param_set(params, SNDRV_PCM_HW_PARAM_CHANNELS, |
| 880 | runtime->oss.channels, 0); |
| 881 | _snd_pcm_hw_param_set(params, SNDRV_PCM_HW_PARAM_RATE, |
| 882 | runtime->oss.rate, 0); |
| 883 | pdprintf("client: access = %i, format = %i, channels = %i, rate = %i\n", |
| 884 | params_access(params), params_format(params), |
| 885 | params_channels(params), params_rate(params)); |
| 886 | } |
| 887 | pdprintf("slave: access = %i, format = %i, channels = %i, rate = %i\n", |
| 888 | params_access(sparams), params_format(sparams), |
| 889 | params_channels(sparams), params_rate(sparams)); |
| 890 | |
| 891 | oss_frame_size = snd_pcm_format_physical_width(params_format(params)) * |
| 892 | params_channels(params) / 8; |
| 893 | |
Jaroslav Kysela | 21a3479 | 2006-01-13 09:12:11 +0100 | [diff] [blame] | 894 | #ifdef CONFIG_SND_PCM_OSS_PLUGINS |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 895 | snd_pcm_oss_plugin_clear(substream); |
| 896 | if (!direct) { |
| 897 | /* add necessary plugins */ |
| 898 | snd_pcm_oss_plugin_clear(substream); |
| 899 | if ((err = snd_pcm_plug_format_plugins(substream, |
| 900 | params, |
| 901 | sparams)) < 0) { |
| 902 | snd_printd("snd_pcm_plug_format_plugins failed: %i\n", err); |
| 903 | snd_pcm_oss_plugin_clear(substream); |
| 904 | goto failure; |
| 905 | } |
| 906 | if (runtime->oss.plugin_first) { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 907 | struct snd_pcm_plugin *plugin; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 908 | if ((err = snd_pcm_plugin_build_io(substream, sparams, &plugin)) < 0) { |
| 909 | snd_printd("snd_pcm_plugin_build_io failed: %i\n", err); |
| 910 | snd_pcm_oss_plugin_clear(substream); |
| 911 | goto failure; |
| 912 | } |
| 913 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { |
| 914 | err = snd_pcm_plugin_append(plugin); |
| 915 | } else { |
| 916 | err = snd_pcm_plugin_insert(plugin); |
| 917 | } |
| 918 | if (err < 0) { |
| 919 | snd_pcm_oss_plugin_clear(substream); |
| 920 | goto failure; |
| 921 | } |
| 922 | } |
| 923 | } |
Jaroslav Kysela | 21a3479 | 2006-01-13 09:12:11 +0100 | [diff] [blame] | 924 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 925 | |
| 926 | err = snd_pcm_oss_period_size(substream, params, sparams); |
| 927 | if (err < 0) |
| 928 | goto failure; |
| 929 | |
| 930 | n = snd_pcm_plug_slave_size(substream, runtime->oss.period_bytes / oss_frame_size); |
| 931 | err = snd_pcm_hw_param_near(substream, sparams, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, n, NULL); |
| 932 | snd_assert(err >= 0, goto failure); |
| 933 | |
| 934 | err = snd_pcm_hw_param_near(substream, sparams, SNDRV_PCM_HW_PARAM_PERIODS, |
| 935 | runtime->oss.periods, NULL); |
| 936 | snd_assert(err >= 0, goto failure); |
| 937 | |
| 938 | snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DROP, NULL); |
| 939 | |
| 940 | if ((err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_HW_PARAMS, sparams)) < 0) { |
| 941 | snd_printd("HW_PARAMS failed: %i\n", err); |
| 942 | goto failure; |
| 943 | } |
| 944 | |
| 945 | memset(sw_params, 0, sizeof(*sw_params)); |
| 946 | if (runtime->oss.trigger) { |
| 947 | sw_params->start_threshold = 1; |
| 948 | } else { |
| 949 | sw_params->start_threshold = runtime->boundary; |
| 950 | } |
Takashi Iwai | 9c323fc | 2006-04-28 15:13:41 +0200 | [diff] [blame] | 951 | if (atomic_read(&substream->mmap_count) || |
| 952 | substream->stream == SNDRV_PCM_STREAM_CAPTURE) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 953 | sw_params->stop_threshold = runtime->boundary; |
| 954 | else |
| 955 | sw_params->stop_threshold = runtime->buffer_size; |
| 956 | sw_params->tstamp_mode = SNDRV_PCM_TSTAMP_NONE; |
| 957 | sw_params->period_step = 1; |
| 958 | sw_params->sleep_min = 0; |
Takashi Iwai | 004e653 | 2005-04-12 17:33:59 +0200 | [diff] [blame] | 959 | sw_params->avail_min = substream->stream == SNDRV_PCM_STREAM_PLAYBACK ? |
| 960 | 1 : runtime->period_size; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 961 | sw_params->xfer_align = 1; |
Takashi Iwai | 9c323fc | 2006-04-28 15:13:41 +0200 | [diff] [blame] | 962 | if (atomic_read(&substream->mmap_count) || |
Takashi Iwai | 060d77b | 2006-03-27 16:44:52 +0200 | [diff] [blame] | 963 | substream->oss.setup.nosilence) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 964 | sw_params->silence_threshold = 0; |
| 965 | sw_params->silence_size = 0; |
| 966 | } else { |
| 967 | snd_pcm_uframes_t frames; |
| 968 | frames = runtime->period_size + 16; |
| 969 | if (frames > runtime->buffer_size) |
| 970 | frames = runtime->buffer_size; |
| 971 | sw_params->silence_threshold = frames; |
| 972 | sw_params->silence_size = frames; |
| 973 | } |
| 974 | |
| 975 | if ((err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_SW_PARAMS, sw_params)) < 0) { |
| 976 | snd_printd("SW_PARAMS failed: %i\n", err); |
| 977 | goto failure; |
| 978 | } |
| 979 | |
| 980 | runtime->oss.periods = params_periods(sparams); |
| 981 | oss_period_size = snd_pcm_plug_client_size(substream, params_period_size(sparams)); |
| 982 | snd_assert(oss_period_size >= 0, err = -EINVAL; goto failure); |
Jaroslav Kysela | 21a3479 | 2006-01-13 09:12:11 +0100 | [diff] [blame] | 983 | #ifdef CONFIG_SND_PCM_OSS_PLUGINS |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 984 | if (runtime->oss.plugin_first) { |
| 985 | err = snd_pcm_plug_alloc(substream, oss_period_size); |
| 986 | if (err < 0) |
| 987 | goto failure; |
| 988 | } |
Jaroslav Kysela | 21a3479 | 2006-01-13 09:12:11 +0100 | [diff] [blame] | 989 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 990 | oss_period_size *= oss_frame_size; |
| 991 | |
| 992 | oss_buffer_size = oss_period_size * runtime->oss.periods; |
| 993 | snd_assert(oss_buffer_size >= 0, err = -EINVAL; goto failure); |
| 994 | |
| 995 | runtime->oss.period_bytes = oss_period_size; |
| 996 | runtime->oss.buffer_bytes = oss_buffer_size; |
| 997 | |
| 998 | pdprintf("oss: period bytes = %i, buffer bytes = %i\n", |
| 999 | runtime->oss.period_bytes, |
| 1000 | runtime->oss.buffer_bytes); |
| 1001 | pdprintf("slave: period_size = %i, buffer_size = %i\n", |
| 1002 | params_period_size(sparams), |
| 1003 | params_buffer_size(sparams)); |
| 1004 | |
| 1005 | runtime->oss.format = snd_pcm_oss_format_to(params_format(params)); |
| 1006 | runtime->oss.channels = params_channels(params); |
| 1007 | runtime->oss.rate = params_rate(params); |
| 1008 | |
| 1009 | runtime->oss.params = 0; |
| 1010 | runtime->oss.prepare = 1; |
| 1011 | vfree(runtime->oss.buffer); |
| 1012 | runtime->oss.buffer = vmalloc(runtime->oss.period_bytes); |
| 1013 | runtime->oss.buffer_used = 0; |
| 1014 | if (runtime->dma_area) |
| 1015 | snd_pcm_format_set_silence(runtime->format, runtime->dma_area, bytes_to_samples(runtime, runtime->dma_bytes)); |
| 1016 | |
| 1017 | runtime->oss.period_frames = snd_pcm_alsa_frames(substream, oss_period_size); |
| 1018 | |
| 1019 | err = 0; |
| 1020 | failure: |
| 1021 | kfree(sw_params); |
| 1022 | kfree(params); |
| 1023 | kfree(sparams); |
Takashi Iwai | e3a5d59 | 2006-11-14 13:03:19 +0100 | [diff] [blame] | 1024 | mutex_unlock(&runtime->oss.params_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1025 | return err; |
| 1026 | } |
| 1027 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1028 | 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] | 1029 | { |
| 1030 | int idx, err; |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1031 | struct snd_pcm_substream *asubstream = NULL, *substream; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1032 | |
| 1033 | for (idx = 0; idx < 2; idx++) { |
| 1034 | substream = pcm_oss_file->streams[idx]; |
| 1035 | if (substream == NULL) |
| 1036 | continue; |
| 1037 | if (asubstream == NULL) |
| 1038 | asubstream = substream; |
| 1039 | if (substream->runtime->oss.params) { |
| 1040 | err = snd_pcm_oss_change_params(substream); |
| 1041 | if (err < 0) |
| 1042 | return err; |
| 1043 | } |
| 1044 | } |
| 1045 | snd_assert(asubstream != NULL, return -EIO); |
| 1046 | if (r_substream) |
| 1047 | *r_substream = asubstream; |
| 1048 | return 0; |
| 1049 | } |
| 1050 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1051 | static int snd_pcm_oss_prepare(struct snd_pcm_substream *substream) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1052 | { |
| 1053 | int err; |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1054 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1055 | |
| 1056 | err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_PREPARE, NULL); |
| 1057 | if (err < 0) { |
| 1058 | snd_printd("snd_pcm_oss_prepare: SNDRV_PCM_IOCTL_PREPARE failed\n"); |
| 1059 | return err; |
| 1060 | } |
| 1061 | runtime->oss.prepare = 0; |
| 1062 | runtime->oss.prev_hw_ptr_interrupt = 0; |
| 1063 | runtime->oss.period_ptr = 0; |
| 1064 | runtime->oss.buffer_used = 0; |
| 1065 | |
| 1066 | return 0; |
| 1067 | } |
| 1068 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1069 | static int snd_pcm_oss_make_ready(struct snd_pcm_substream *substream) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1070 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1071 | struct snd_pcm_runtime *runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1072 | int err; |
| 1073 | |
| 1074 | if (substream == NULL) |
| 1075 | return 0; |
| 1076 | runtime = substream->runtime; |
| 1077 | if (runtime->oss.params) { |
| 1078 | err = snd_pcm_oss_change_params(substream); |
| 1079 | if (err < 0) |
| 1080 | return err; |
| 1081 | } |
| 1082 | if (runtime->oss.prepare) { |
| 1083 | err = snd_pcm_oss_prepare(substream); |
| 1084 | if (err < 0) |
| 1085 | return err; |
| 1086 | } |
| 1087 | return 0; |
| 1088 | } |
| 1089 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1090 | 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] | 1091 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1092 | struct snd_pcm_runtime *runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1093 | snd_pcm_uframes_t frames; |
| 1094 | int err = 0; |
| 1095 | |
| 1096 | while (1) { |
| 1097 | err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DELAY, delay); |
| 1098 | if (err < 0) |
| 1099 | break; |
| 1100 | runtime = substream->runtime; |
| 1101 | if (*delay <= (snd_pcm_sframes_t)runtime->buffer_size) |
| 1102 | break; |
| 1103 | /* in case of overrun, skip whole periods like OSS/Linux driver does */ |
| 1104 | /* until avail(delay) <= buffer_size */ |
| 1105 | frames = (*delay - runtime->buffer_size) + runtime->period_size - 1; |
| 1106 | frames /= runtime->period_size; |
| 1107 | frames *= runtime->period_size; |
| 1108 | err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_FORWARD, &frames); |
| 1109 | if (err < 0) |
| 1110 | break; |
| 1111 | } |
| 1112 | return err; |
| 1113 | } |
| 1114 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1115 | 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] | 1116 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1117 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1118 | int ret; |
| 1119 | while (1) { |
| 1120 | if (runtime->status->state == SNDRV_PCM_STATE_XRUN || |
| 1121 | runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) { |
| 1122 | #ifdef OSS_DEBUG |
| 1123 | if (runtime->status->state == SNDRV_PCM_STATE_XRUN) |
| 1124 | printk("pcm_oss: write: recovering from XRUN\n"); |
| 1125 | else |
| 1126 | printk("pcm_oss: write: recovering from SUSPEND\n"); |
| 1127 | #endif |
| 1128 | ret = snd_pcm_oss_prepare(substream); |
| 1129 | if (ret < 0) |
| 1130 | break; |
| 1131 | } |
| 1132 | if (in_kernel) { |
| 1133 | mm_segment_t fs; |
| 1134 | fs = snd_enter_user(); |
| 1135 | ret = snd_pcm_lib_write(substream, (void __user *)ptr, frames); |
| 1136 | snd_leave_user(fs); |
| 1137 | } else { |
| 1138 | ret = snd_pcm_lib_write(substream, (void __user *)ptr, frames); |
| 1139 | } |
| 1140 | if (ret != -EPIPE && ret != -ESTRPIPE) |
| 1141 | break; |
| 1142 | /* test, if we can't store new data, because the stream */ |
| 1143 | /* has not been started */ |
| 1144 | if (runtime->status->state == SNDRV_PCM_STATE_PREPARED) |
| 1145 | return -EAGAIN; |
| 1146 | } |
| 1147 | return ret; |
| 1148 | } |
| 1149 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1150 | 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] | 1151 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1152 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1153 | snd_pcm_sframes_t delay; |
| 1154 | int ret; |
| 1155 | while (1) { |
| 1156 | if (runtime->status->state == SNDRV_PCM_STATE_XRUN || |
| 1157 | runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) { |
| 1158 | #ifdef OSS_DEBUG |
| 1159 | if (runtime->status->state == SNDRV_PCM_STATE_XRUN) |
| 1160 | printk("pcm_oss: read: recovering from XRUN\n"); |
| 1161 | else |
| 1162 | printk("pcm_oss: read: recovering from SUSPEND\n"); |
| 1163 | #endif |
| 1164 | ret = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DRAIN, NULL); |
| 1165 | if (ret < 0) |
| 1166 | break; |
| 1167 | } else if (runtime->status->state == SNDRV_PCM_STATE_SETUP) { |
| 1168 | ret = snd_pcm_oss_prepare(substream); |
| 1169 | if (ret < 0) |
| 1170 | break; |
| 1171 | } |
| 1172 | ret = snd_pcm_oss_capture_position_fixup(substream, &delay); |
| 1173 | if (ret < 0) |
| 1174 | break; |
| 1175 | if (in_kernel) { |
| 1176 | mm_segment_t fs; |
| 1177 | fs = snd_enter_user(); |
| 1178 | ret = snd_pcm_lib_read(substream, (void __user *)ptr, frames); |
| 1179 | snd_leave_user(fs); |
| 1180 | } else { |
| 1181 | ret = snd_pcm_lib_read(substream, (void __user *)ptr, frames); |
| 1182 | } |
| 1183 | if (ret == -EPIPE) { |
| 1184 | if (runtime->status->state == SNDRV_PCM_STATE_DRAINING) { |
| 1185 | ret = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DROP, NULL); |
| 1186 | if (ret < 0) |
| 1187 | break; |
| 1188 | } |
| 1189 | continue; |
| 1190 | } |
| 1191 | if (ret != -ESTRPIPE) |
| 1192 | break; |
| 1193 | } |
| 1194 | return ret; |
| 1195 | } |
| 1196 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1197 | 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] | 1198 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1199 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1200 | int ret; |
| 1201 | while (1) { |
| 1202 | if (runtime->status->state == SNDRV_PCM_STATE_XRUN || |
| 1203 | runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) { |
| 1204 | #ifdef OSS_DEBUG |
| 1205 | if (runtime->status->state == SNDRV_PCM_STATE_XRUN) |
| 1206 | printk("pcm_oss: writev: recovering from XRUN\n"); |
| 1207 | else |
| 1208 | printk("pcm_oss: writev: recovering from SUSPEND\n"); |
| 1209 | #endif |
| 1210 | ret = snd_pcm_oss_prepare(substream); |
| 1211 | if (ret < 0) |
| 1212 | break; |
| 1213 | } |
| 1214 | if (in_kernel) { |
| 1215 | mm_segment_t fs; |
| 1216 | fs = snd_enter_user(); |
| 1217 | ret = snd_pcm_lib_writev(substream, (void __user **)bufs, frames); |
| 1218 | snd_leave_user(fs); |
| 1219 | } else { |
| 1220 | ret = snd_pcm_lib_writev(substream, (void __user **)bufs, frames); |
| 1221 | } |
| 1222 | if (ret != -EPIPE && ret != -ESTRPIPE) |
| 1223 | break; |
| 1224 | |
| 1225 | /* test, if we can't store new data, because the stream */ |
| 1226 | /* has not been started */ |
| 1227 | if (runtime->status->state == SNDRV_PCM_STATE_PREPARED) |
| 1228 | return -EAGAIN; |
| 1229 | } |
| 1230 | return ret; |
| 1231 | } |
| 1232 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1233 | 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] | 1234 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1235 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1236 | int ret; |
| 1237 | while (1) { |
| 1238 | if (runtime->status->state == SNDRV_PCM_STATE_XRUN || |
| 1239 | runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) { |
| 1240 | #ifdef OSS_DEBUG |
| 1241 | if (runtime->status->state == SNDRV_PCM_STATE_XRUN) |
| 1242 | printk("pcm_oss: readv: recovering from XRUN\n"); |
| 1243 | else |
| 1244 | printk("pcm_oss: readv: recovering from SUSPEND\n"); |
| 1245 | #endif |
| 1246 | ret = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DRAIN, NULL); |
| 1247 | if (ret < 0) |
| 1248 | break; |
| 1249 | } else if (runtime->status->state == SNDRV_PCM_STATE_SETUP) { |
| 1250 | ret = snd_pcm_oss_prepare(substream); |
| 1251 | if (ret < 0) |
| 1252 | break; |
| 1253 | } |
| 1254 | if (in_kernel) { |
| 1255 | mm_segment_t fs; |
| 1256 | fs = snd_enter_user(); |
| 1257 | ret = snd_pcm_lib_readv(substream, (void __user **)bufs, frames); |
| 1258 | snd_leave_user(fs); |
| 1259 | } else { |
| 1260 | ret = snd_pcm_lib_readv(substream, (void __user **)bufs, frames); |
| 1261 | } |
| 1262 | if (ret != -EPIPE && ret != -ESTRPIPE) |
| 1263 | break; |
| 1264 | } |
| 1265 | return ret; |
| 1266 | } |
| 1267 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1268 | 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] | 1269 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1270 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1271 | snd_pcm_sframes_t frames, frames1; |
Jaroslav Kysela | 21a3479 | 2006-01-13 09:12:11 +0100 | [diff] [blame] | 1272 | #ifdef CONFIG_SND_PCM_OSS_PLUGINS |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1273 | if (runtime->oss.plugin_first) { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1274 | struct snd_pcm_plugin_channel *channels; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1275 | size_t oss_frame_bytes = (runtime->oss.plugin_first->src_width * runtime->oss.plugin_first->src_format.channels) / 8; |
| 1276 | if (!in_kernel) { |
| 1277 | if (copy_from_user(runtime->oss.buffer, (const char __user *)buf, bytes)) |
| 1278 | return -EFAULT; |
| 1279 | buf = runtime->oss.buffer; |
| 1280 | } |
| 1281 | frames = bytes / oss_frame_bytes; |
| 1282 | frames1 = snd_pcm_plug_client_channels_buf(substream, (char *)buf, frames, &channels); |
| 1283 | if (frames1 < 0) |
| 1284 | return frames1; |
| 1285 | frames1 = snd_pcm_plug_write_transfer(substream, channels, frames1); |
| 1286 | if (frames1 <= 0) |
| 1287 | return frames1; |
| 1288 | bytes = frames1 * oss_frame_bytes; |
Jaroslav Kysela | 21a3479 | 2006-01-13 09:12:11 +0100 | [diff] [blame] | 1289 | } else |
| 1290 | #endif |
| 1291 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1292 | frames = bytes_to_frames(runtime, bytes); |
| 1293 | frames1 = snd_pcm_oss_write3(substream, buf, frames, in_kernel); |
| 1294 | if (frames1 <= 0) |
| 1295 | return frames1; |
| 1296 | bytes = frames_to_bytes(runtime, frames1); |
| 1297 | } |
| 1298 | return bytes; |
| 1299 | } |
| 1300 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1301 | 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] | 1302 | { |
| 1303 | size_t xfer = 0; |
| 1304 | ssize_t tmp; |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1305 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1306 | |
Takashi Iwai | 9c323fc | 2006-04-28 15:13:41 +0200 | [diff] [blame] | 1307 | if (atomic_read(&substream->mmap_count)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1308 | return -ENXIO; |
| 1309 | |
| 1310 | if ((tmp = snd_pcm_oss_make_ready(substream)) < 0) |
| 1311 | return tmp; |
Takashi Iwai | e3a5d59 | 2006-11-14 13:03:19 +0100 | [diff] [blame] | 1312 | mutex_lock(&runtime->oss.params_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1313 | while (bytes > 0) { |
| 1314 | if (bytes < runtime->oss.period_bytes || runtime->oss.buffer_used > 0) { |
| 1315 | tmp = bytes; |
| 1316 | if (tmp + runtime->oss.buffer_used > runtime->oss.period_bytes) |
| 1317 | tmp = runtime->oss.period_bytes - runtime->oss.buffer_used; |
| 1318 | if (tmp > 0) { |
Takashi Iwai | e3a5d59 | 2006-11-14 13:03:19 +0100 | [diff] [blame] | 1319 | if (copy_from_user(runtime->oss.buffer + runtime->oss.buffer_used, buf, tmp)) { |
| 1320 | tmp = -EFAULT; |
| 1321 | goto err; |
| 1322 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1323 | } |
| 1324 | runtime->oss.buffer_used += tmp; |
| 1325 | buf += tmp; |
| 1326 | bytes -= tmp; |
| 1327 | xfer += tmp; |
Takashi Iwai | 060d77b | 2006-03-27 16:44:52 +0200 | [diff] [blame] | 1328 | if (substream->oss.setup.partialfrag || |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1329 | runtime->oss.buffer_used == runtime->oss.period_bytes) { |
| 1330 | tmp = snd_pcm_oss_write2(substream, runtime->oss.buffer + runtime->oss.period_ptr, |
| 1331 | runtime->oss.buffer_used - runtime->oss.period_ptr, 1); |
| 1332 | if (tmp <= 0) |
Takashi Iwai | e3a5d59 | 2006-11-14 13:03:19 +0100 | [diff] [blame] | 1333 | goto err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1334 | runtime->oss.bytes += tmp; |
| 1335 | runtime->oss.period_ptr += tmp; |
| 1336 | runtime->oss.period_ptr %= runtime->oss.period_bytes; |
| 1337 | if (runtime->oss.period_ptr == 0 || |
| 1338 | runtime->oss.period_ptr == runtime->oss.buffer_used) |
| 1339 | runtime->oss.buffer_used = 0; |
Takashi Iwai | e3a5d59 | 2006-11-14 13:03:19 +0100 | [diff] [blame] | 1340 | else if ((substream->f_flags & O_NONBLOCK) != 0) { |
| 1341 | tmp = -EAGAIN; |
| 1342 | goto err; |
| 1343 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1344 | } |
| 1345 | } else { |
Clemens Ladisch | 4d23359 | 2005-09-05 10:35:20 +0200 | [diff] [blame] | 1346 | tmp = snd_pcm_oss_write2(substream, |
| 1347 | (const char __force *)buf, |
| 1348 | runtime->oss.period_bytes, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1349 | if (tmp <= 0) |
Takashi Iwai | e3a5d59 | 2006-11-14 13:03:19 +0100 | [diff] [blame] | 1350 | goto err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1351 | runtime->oss.bytes += tmp; |
| 1352 | buf += tmp; |
| 1353 | bytes -= tmp; |
| 1354 | xfer += tmp; |
Takashi Iwai | 0df63e4 | 2006-04-28 15:13:41 +0200 | [diff] [blame] | 1355 | if ((substream->f_flags & O_NONBLOCK) != 0 && |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1356 | tmp != runtime->oss.period_bytes) |
| 1357 | break; |
| 1358 | } |
| 1359 | } |
Takashi Iwai | e3a5d59 | 2006-11-14 13:03:19 +0100 | [diff] [blame] | 1360 | mutex_unlock(&runtime->oss.params_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1361 | return xfer; |
Takashi Iwai | e3a5d59 | 2006-11-14 13:03:19 +0100 | [diff] [blame] | 1362 | |
| 1363 | err: |
| 1364 | mutex_unlock(&runtime->oss.params_lock); |
| 1365 | return xfer > 0 ? (snd_pcm_sframes_t)xfer : tmp; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1366 | } |
| 1367 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1368 | 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] | 1369 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1370 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1371 | snd_pcm_sframes_t frames, frames1; |
Jaroslav Kysela | 21a3479 | 2006-01-13 09:12:11 +0100 | [diff] [blame] | 1372 | #ifdef CONFIG_SND_PCM_OSS_PLUGINS |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1373 | char __user *final_dst = (char __user *)buf; |
| 1374 | if (runtime->oss.plugin_first) { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1375 | struct snd_pcm_plugin_channel *channels; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1376 | size_t oss_frame_bytes = (runtime->oss.plugin_last->dst_width * runtime->oss.plugin_last->dst_format.channels) / 8; |
| 1377 | if (!in_kernel) |
| 1378 | buf = runtime->oss.buffer; |
| 1379 | frames = bytes / oss_frame_bytes; |
| 1380 | frames1 = snd_pcm_plug_client_channels_buf(substream, buf, frames, &channels); |
| 1381 | if (frames1 < 0) |
| 1382 | return frames1; |
| 1383 | frames1 = snd_pcm_plug_read_transfer(substream, channels, frames1); |
| 1384 | if (frames1 <= 0) |
| 1385 | return frames1; |
| 1386 | bytes = frames1 * oss_frame_bytes; |
| 1387 | if (!in_kernel && copy_to_user(final_dst, buf, bytes)) |
| 1388 | return -EFAULT; |
Jaroslav Kysela | 21a3479 | 2006-01-13 09:12:11 +0100 | [diff] [blame] | 1389 | } else |
| 1390 | #endif |
| 1391 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1392 | frames = bytes_to_frames(runtime, bytes); |
| 1393 | frames1 = snd_pcm_oss_read3(substream, buf, frames, in_kernel); |
| 1394 | if (frames1 <= 0) |
| 1395 | return frames1; |
| 1396 | bytes = frames_to_bytes(runtime, frames1); |
| 1397 | } |
| 1398 | return bytes; |
| 1399 | } |
| 1400 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1401 | 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] | 1402 | { |
| 1403 | size_t xfer = 0; |
| 1404 | ssize_t tmp; |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1405 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1406 | |
Takashi Iwai | 9c323fc | 2006-04-28 15:13:41 +0200 | [diff] [blame] | 1407 | if (atomic_read(&substream->mmap_count)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1408 | return -ENXIO; |
| 1409 | |
| 1410 | if ((tmp = snd_pcm_oss_make_ready(substream)) < 0) |
| 1411 | return tmp; |
Takashi Iwai | e3a5d59 | 2006-11-14 13:03:19 +0100 | [diff] [blame] | 1412 | mutex_lock(&runtime->oss.params_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1413 | while (bytes > 0) { |
| 1414 | if (bytes < runtime->oss.period_bytes || runtime->oss.buffer_used > 0) { |
| 1415 | if (runtime->oss.buffer_used == 0) { |
| 1416 | tmp = snd_pcm_oss_read2(substream, runtime->oss.buffer, runtime->oss.period_bytes, 1); |
| 1417 | if (tmp <= 0) |
Takashi Iwai | e3a5d59 | 2006-11-14 13:03:19 +0100 | [diff] [blame] | 1418 | goto err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1419 | runtime->oss.bytes += tmp; |
| 1420 | runtime->oss.period_ptr = tmp; |
| 1421 | runtime->oss.buffer_used = tmp; |
| 1422 | } |
| 1423 | tmp = bytes; |
| 1424 | if ((size_t) tmp > runtime->oss.buffer_used) |
| 1425 | tmp = runtime->oss.buffer_used; |
Takashi Iwai | e3a5d59 | 2006-11-14 13:03:19 +0100 | [diff] [blame] | 1426 | if (copy_to_user(buf, runtime->oss.buffer + (runtime->oss.period_ptr - runtime->oss.buffer_used), tmp)) { |
| 1427 | tmp = -EFAULT; |
| 1428 | goto err; |
| 1429 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1430 | buf += tmp; |
| 1431 | bytes -= tmp; |
| 1432 | xfer += tmp; |
| 1433 | runtime->oss.buffer_used -= tmp; |
| 1434 | } else { |
Clemens Ladisch | 4d23359 | 2005-09-05 10:35:20 +0200 | [diff] [blame] | 1435 | tmp = snd_pcm_oss_read2(substream, (char __force *)buf, |
| 1436 | runtime->oss.period_bytes, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1437 | if (tmp <= 0) |
Takashi Iwai | e3a5d59 | 2006-11-14 13:03:19 +0100 | [diff] [blame] | 1438 | goto err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1439 | runtime->oss.bytes += tmp; |
| 1440 | buf += tmp; |
| 1441 | bytes -= tmp; |
| 1442 | xfer += tmp; |
| 1443 | } |
| 1444 | } |
Takashi Iwai | e3a5d59 | 2006-11-14 13:03:19 +0100 | [diff] [blame] | 1445 | mutex_unlock(&runtime->oss.params_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1446 | return xfer; |
Takashi Iwai | e3a5d59 | 2006-11-14 13:03:19 +0100 | [diff] [blame] | 1447 | |
| 1448 | err: |
| 1449 | mutex_unlock(&runtime->oss.params_lock); |
| 1450 | return xfer > 0 ? (snd_pcm_sframes_t)xfer : tmp; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1451 | } |
| 1452 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1453 | 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] | 1454 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1455 | struct snd_pcm_substream *substream; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1456 | |
| 1457 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK]; |
| 1458 | if (substream != NULL) { |
Takashi Iwai | bf1bbb5 | 2006-03-27 16:22:45 +0200 | [diff] [blame] | 1459 | snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DROP, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1460 | substream->runtime->oss.prepare = 1; |
| 1461 | } |
| 1462 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE]; |
| 1463 | if (substream != NULL) { |
Takashi Iwai | bf1bbb5 | 2006-03-27 16:22:45 +0200 | [diff] [blame] | 1464 | snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DROP, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1465 | substream->runtime->oss.prepare = 1; |
| 1466 | } |
| 1467 | return 0; |
| 1468 | } |
| 1469 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1470 | 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] | 1471 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1472 | struct snd_pcm_substream *substream; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1473 | int err; |
| 1474 | |
| 1475 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK]; |
| 1476 | if (substream != NULL) { |
| 1477 | if ((err = snd_pcm_oss_make_ready(substream)) < 0) |
| 1478 | return err; |
Takashi Iwai | bf1bbb5 | 2006-03-27 16:22:45 +0200 | [diff] [blame] | 1479 | snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_START, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1480 | } |
| 1481 | /* note: all errors from the start action are ignored */ |
| 1482 | /* OSS apps do not know, how to handle them */ |
| 1483 | return 0; |
| 1484 | } |
| 1485 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1486 | 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] | 1487 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1488 | struct snd_pcm_runtime *runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1489 | ssize_t result = 0; |
| 1490 | long res; |
| 1491 | wait_queue_t wait; |
| 1492 | |
| 1493 | runtime = substream->runtime; |
| 1494 | init_waitqueue_entry(&wait, current); |
| 1495 | add_wait_queue(&runtime->sleep, &wait); |
| 1496 | #ifdef OSS_DEBUG |
| 1497 | printk("sync1: size = %li\n", size); |
| 1498 | #endif |
| 1499 | while (1) { |
| 1500 | result = snd_pcm_oss_write2(substream, runtime->oss.buffer, size, 1); |
| 1501 | if (result > 0) { |
| 1502 | runtime->oss.buffer_used = 0; |
| 1503 | result = 0; |
| 1504 | break; |
| 1505 | } |
| 1506 | if (result != 0 && result != -EAGAIN) |
| 1507 | break; |
| 1508 | result = 0; |
| 1509 | set_current_state(TASK_INTERRUPTIBLE); |
| 1510 | snd_pcm_stream_lock_irq(substream); |
| 1511 | res = runtime->status->state; |
| 1512 | snd_pcm_stream_unlock_irq(substream); |
| 1513 | if (res != SNDRV_PCM_STATE_RUNNING) { |
| 1514 | set_current_state(TASK_RUNNING); |
| 1515 | break; |
| 1516 | } |
| 1517 | res = schedule_timeout(10 * HZ); |
| 1518 | if (signal_pending(current)) { |
| 1519 | result = -ERESTARTSYS; |
| 1520 | break; |
| 1521 | } |
| 1522 | if (res == 0) { |
| 1523 | snd_printk(KERN_ERR "OSS sync error - DMA timeout\n"); |
| 1524 | result = -EIO; |
| 1525 | break; |
| 1526 | } |
| 1527 | } |
| 1528 | remove_wait_queue(&runtime->sleep, &wait); |
| 1529 | return result; |
| 1530 | } |
| 1531 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1532 | 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] | 1533 | { |
| 1534 | int err = 0; |
| 1535 | unsigned int saved_f_flags; |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1536 | struct snd_pcm_substream *substream; |
| 1537 | struct snd_pcm_runtime *runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1538 | snd_pcm_format_t format; |
| 1539 | unsigned long width; |
| 1540 | size_t size; |
| 1541 | |
| 1542 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK]; |
| 1543 | if (substream != NULL) { |
| 1544 | runtime = substream->runtime; |
Takashi Iwai | 9c323fc | 2006-04-28 15:13:41 +0200 | [diff] [blame] | 1545 | if (atomic_read(&substream->mmap_count)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1546 | goto __direct; |
| 1547 | if ((err = snd_pcm_oss_make_ready(substream)) < 0) |
| 1548 | return err; |
| 1549 | format = snd_pcm_oss_format_from(runtime->oss.format); |
| 1550 | width = snd_pcm_format_physical_width(format); |
Takashi Iwai | e3a5d59 | 2006-11-14 13:03:19 +0100 | [diff] [blame] | 1551 | mutex_lock(&runtime->oss.params_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1552 | if (runtime->oss.buffer_used > 0) { |
| 1553 | #ifdef OSS_DEBUG |
| 1554 | printk("sync: buffer_used\n"); |
| 1555 | #endif |
| 1556 | size = (8 * (runtime->oss.period_bytes - runtime->oss.buffer_used) + 7) / width; |
| 1557 | snd_pcm_format_set_silence(format, |
| 1558 | runtime->oss.buffer + runtime->oss.buffer_used, |
| 1559 | size); |
| 1560 | err = snd_pcm_oss_sync1(substream, runtime->oss.period_bytes); |
Takashi Iwai | e3a5d59 | 2006-11-14 13:03:19 +0100 | [diff] [blame] | 1561 | if (err < 0) { |
| 1562 | mutex_unlock(&runtime->oss.params_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1563 | return err; |
Takashi Iwai | e3a5d59 | 2006-11-14 13:03:19 +0100 | [diff] [blame] | 1564 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1565 | } else if (runtime->oss.period_ptr > 0) { |
| 1566 | #ifdef OSS_DEBUG |
| 1567 | printk("sync: period_ptr\n"); |
| 1568 | #endif |
| 1569 | size = runtime->oss.period_bytes - runtime->oss.period_ptr; |
| 1570 | snd_pcm_format_set_silence(format, |
| 1571 | runtime->oss.buffer, |
| 1572 | size * 8 / width); |
| 1573 | err = snd_pcm_oss_sync1(substream, size); |
Takashi Iwai | e3a5d59 | 2006-11-14 13:03:19 +0100 | [diff] [blame] | 1574 | if (err < 0) { |
| 1575 | mutex_unlock(&runtime->oss.params_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1576 | return err; |
Takashi Iwai | e3a5d59 | 2006-11-14 13:03:19 +0100 | [diff] [blame] | 1577 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1578 | } |
| 1579 | /* |
| 1580 | * The ALSA's period might be a bit large than OSS one. |
| 1581 | * Fill the remain portion of ALSA period with zeros. |
| 1582 | */ |
| 1583 | size = runtime->control->appl_ptr % runtime->period_size; |
| 1584 | if (size > 0) { |
| 1585 | size = runtime->period_size - size; |
| 1586 | if (runtime->access == SNDRV_PCM_ACCESS_RW_INTERLEAVED) { |
| 1587 | size = (runtime->frame_bits * size) / 8; |
| 1588 | while (size > 0) { |
| 1589 | mm_segment_t fs; |
| 1590 | size_t size1 = size < runtime->oss.period_bytes ? size : runtime->oss.period_bytes; |
| 1591 | size -= size1; |
| 1592 | size1 *= 8; |
| 1593 | size1 /= runtime->sample_bits; |
| 1594 | snd_pcm_format_set_silence(runtime->format, |
| 1595 | runtime->oss.buffer, |
| 1596 | size1); |
| 1597 | fs = snd_enter_user(); |
| 1598 | snd_pcm_lib_write(substream, (void __user *)runtime->oss.buffer, size1); |
| 1599 | snd_leave_user(fs); |
| 1600 | } |
| 1601 | } else if (runtime->access == SNDRV_PCM_ACCESS_RW_NONINTERLEAVED) { |
| 1602 | void __user *buffers[runtime->channels]; |
| 1603 | memset(buffers, 0, runtime->channels * sizeof(void *)); |
| 1604 | snd_pcm_lib_writev(substream, buffers, size); |
| 1605 | } |
| 1606 | } |
Takashi Iwai | e3a5d59 | 2006-11-14 13:03:19 +0100 | [diff] [blame] | 1607 | mutex_unlock(&runtime->oss.params_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1608 | /* |
| 1609 | * finish sync: drain the buffer |
| 1610 | */ |
| 1611 | __direct: |
Takashi Iwai | 0df63e4 | 2006-04-28 15:13:41 +0200 | [diff] [blame] | 1612 | saved_f_flags = substream->f_flags; |
| 1613 | substream->f_flags &= ~O_NONBLOCK; |
Takashi Iwai | bf1bbb5 | 2006-03-27 16:22:45 +0200 | [diff] [blame] | 1614 | err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DRAIN, NULL); |
Takashi Iwai | 0df63e4 | 2006-04-28 15:13:41 +0200 | [diff] [blame] | 1615 | substream->f_flags = saved_f_flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1616 | if (err < 0) |
| 1617 | return err; |
| 1618 | runtime->oss.prepare = 1; |
| 1619 | } |
| 1620 | |
| 1621 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE]; |
| 1622 | if (substream != NULL) { |
| 1623 | if ((err = snd_pcm_oss_make_ready(substream)) < 0) |
| 1624 | return err; |
| 1625 | runtime = substream->runtime; |
Takashi Iwai | bf1bbb5 | 2006-03-27 16:22:45 +0200 | [diff] [blame] | 1626 | err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DROP, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1627 | if (err < 0) |
| 1628 | return err; |
| 1629 | runtime->oss.buffer_used = 0; |
| 1630 | runtime->oss.prepare = 1; |
| 1631 | } |
| 1632 | return 0; |
| 1633 | } |
| 1634 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1635 | 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] | 1636 | { |
| 1637 | int idx; |
| 1638 | |
| 1639 | for (idx = 1; idx >= 0; --idx) { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1640 | struct snd_pcm_substream *substream = pcm_oss_file->streams[idx]; |
| 1641 | struct snd_pcm_runtime *runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1642 | if (substream == NULL) |
| 1643 | continue; |
| 1644 | runtime = substream->runtime; |
| 1645 | if (rate < 1000) |
| 1646 | rate = 1000; |
| 1647 | else if (rate > 192000) |
| 1648 | rate = 192000; |
| 1649 | if (runtime->oss.rate != rate) { |
| 1650 | runtime->oss.params = 1; |
| 1651 | runtime->oss.rate = rate; |
| 1652 | } |
| 1653 | } |
| 1654 | return snd_pcm_oss_get_rate(pcm_oss_file); |
| 1655 | } |
| 1656 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1657 | 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] | 1658 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1659 | struct snd_pcm_substream *substream; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1660 | int err; |
| 1661 | |
| 1662 | if ((err = snd_pcm_oss_get_active_substream(pcm_oss_file, &substream)) < 0) |
| 1663 | return err; |
| 1664 | return substream->runtime->oss.rate; |
| 1665 | } |
| 1666 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1667 | 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] | 1668 | { |
| 1669 | int idx; |
| 1670 | if (channels < 1) |
| 1671 | channels = 1; |
| 1672 | if (channels > 128) |
| 1673 | return -EINVAL; |
| 1674 | for (idx = 1; idx >= 0; --idx) { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1675 | struct snd_pcm_substream *substream = pcm_oss_file->streams[idx]; |
| 1676 | struct snd_pcm_runtime *runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1677 | if (substream == NULL) |
| 1678 | continue; |
| 1679 | runtime = substream->runtime; |
| 1680 | if (runtime->oss.channels != channels) { |
| 1681 | runtime->oss.params = 1; |
| 1682 | runtime->oss.channels = channels; |
| 1683 | } |
| 1684 | } |
| 1685 | return snd_pcm_oss_get_channels(pcm_oss_file); |
| 1686 | } |
| 1687 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1688 | 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] | 1689 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1690 | struct snd_pcm_substream *substream; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1691 | int err; |
| 1692 | |
| 1693 | if ((err = snd_pcm_oss_get_active_substream(pcm_oss_file, &substream)) < 0) |
| 1694 | return err; |
| 1695 | return substream->runtime->oss.channels; |
| 1696 | } |
| 1697 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1698 | 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] | 1699 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1700 | struct snd_pcm_substream *substream; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1701 | int err; |
| 1702 | |
| 1703 | if ((err = snd_pcm_oss_get_active_substream(pcm_oss_file, &substream)) < 0) |
| 1704 | return err; |
| 1705 | return substream->runtime->oss.period_bytes; |
| 1706 | } |
| 1707 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1708 | 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] | 1709 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1710 | struct snd_pcm_substream *substream; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1711 | int err; |
| 1712 | int direct; |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1713 | struct snd_pcm_hw_params *params; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1714 | unsigned int formats = 0; |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1715 | struct snd_mask format_mask; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1716 | int fmt; |
| 1717 | |
| 1718 | if ((err = snd_pcm_oss_get_active_substream(pcm_oss_file, &substream)) < 0) |
| 1719 | return err; |
Takashi Iwai | 9c323fc | 2006-04-28 15:13:41 +0200 | [diff] [blame] | 1720 | if (atomic_read(&substream->mmap_count)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1721 | direct = 1; |
Takashi Iwai | 060d77b | 2006-03-27 16:44:52 +0200 | [diff] [blame] | 1722 | else |
| 1723 | direct = substream->oss.setup.direct; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1724 | if (!direct) |
| 1725 | return AFMT_MU_LAW | AFMT_U8 | |
| 1726 | AFMT_S16_LE | AFMT_S16_BE | |
| 1727 | AFMT_S8 | AFMT_U16_LE | |
| 1728 | AFMT_U16_BE; |
| 1729 | params = kmalloc(sizeof(*params), GFP_KERNEL); |
| 1730 | if (!params) |
| 1731 | return -ENOMEM; |
| 1732 | _snd_pcm_hw_params_any(params); |
| 1733 | err = snd_pcm_hw_refine(substream, params); |
| 1734 | format_mask = *hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT); |
| 1735 | kfree(params); |
| 1736 | snd_assert(err >= 0, return err); |
| 1737 | for (fmt = 0; fmt < 32; ++fmt) { |
| 1738 | if (snd_mask_test(&format_mask, fmt)) { |
| 1739 | int f = snd_pcm_oss_format_to(fmt); |
| 1740 | if (f >= 0) |
| 1741 | formats |= f; |
| 1742 | } |
| 1743 | } |
| 1744 | return formats; |
| 1745 | } |
| 1746 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1747 | 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] | 1748 | { |
| 1749 | int formats, idx; |
| 1750 | |
| 1751 | if (format != AFMT_QUERY) { |
| 1752 | formats = snd_pcm_oss_get_formats(pcm_oss_file); |
Steven Finney | 5c59e09 | 2006-04-13 12:49:31 +0200 | [diff] [blame] | 1753 | if (formats < 0) |
| 1754 | return formats; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1755 | if (!(formats & format)) |
| 1756 | format = AFMT_U8; |
| 1757 | for (idx = 1; idx >= 0; --idx) { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1758 | struct snd_pcm_substream *substream = pcm_oss_file->streams[idx]; |
| 1759 | struct snd_pcm_runtime *runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1760 | if (substream == NULL) |
| 1761 | continue; |
| 1762 | runtime = substream->runtime; |
| 1763 | if (runtime->oss.format != format) { |
| 1764 | runtime->oss.params = 1; |
| 1765 | runtime->oss.format = format; |
| 1766 | } |
| 1767 | } |
| 1768 | } |
| 1769 | return snd_pcm_oss_get_format(pcm_oss_file); |
| 1770 | } |
| 1771 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1772 | 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] | 1773 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1774 | struct snd_pcm_substream *substream; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1775 | int err; |
| 1776 | |
| 1777 | if ((err = snd_pcm_oss_get_active_substream(pcm_oss_file, &substream)) < 0) |
| 1778 | return err; |
| 1779 | return substream->runtime->oss.format; |
| 1780 | } |
| 1781 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1782 | 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] | 1783 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1784 | struct snd_pcm_runtime *runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1785 | |
| 1786 | if (substream == NULL) |
| 1787 | return 0; |
| 1788 | runtime = substream->runtime; |
| 1789 | if (subdivide == 0) { |
| 1790 | subdivide = runtime->oss.subdivision; |
| 1791 | if (subdivide == 0) |
| 1792 | subdivide = 1; |
| 1793 | return subdivide; |
| 1794 | } |
| 1795 | if (runtime->oss.subdivision || runtime->oss.fragshift) |
| 1796 | return -EINVAL; |
| 1797 | if (subdivide != 1 && subdivide != 2 && subdivide != 4 && |
| 1798 | subdivide != 8 && subdivide != 16) |
| 1799 | return -EINVAL; |
| 1800 | runtime->oss.subdivision = subdivide; |
| 1801 | runtime->oss.params = 1; |
| 1802 | return subdivide; |
| 1803 | } |
| 1804 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1805 | 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] | 1806 | { |
| 1807 | int err = -EINVAL, idx; |
| 1808 | |
| 1809 | for (idx = 1; idx >= 0; --idx) { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1810 | struct snd_pcm_substream *substream = pcm_oss_file->streams[idx]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1811 | if (substream == NULL) |
| 1812 | continue; |
| 1813 | if ((err = snd_pcm_oss_set_subdivide1(substream, subdivide)) < 0) |
| 1814 | return err; |
| 1815 | } |
| 1816 | return err; |
| 1817 | } |
| 1818 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1819 | 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] | 1820 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1821 | struct snd_pcm_runtime *runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1822 | |
| 1823 | if (substream == NULL) |
| 1824 | return 0; |
| 1825 | runtime = substream->runtime; |
| 1826 | if (runtime->oss.subdivision || runtime->oss.fragshift) |
| 1827 | return -EINVAL; |
| 1828 | runtime->oss.fragshift = val & 0xffff; |
| 1829 | runtime->oss.maxfrags = (val >> 16) & 0xffff; |
| 1830 | if (runtime->oss.fragshift < 4) /* < 16 */ |
| 1831 | runtime->oss.fragshift = 4; |
| 1832 | if (runtime->oss.maxfrags < 2) |
| 1833 | runtime->oss.maxfrags = 2; |
| 1834 | runtime->oss.params = 1; |
| 1835 | return 0; |
| 1836 | } |
| 1837 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1838 | 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] | 1839 | { |
| 1840 | int err = -EINVAL, idx; |
| 1841 | |
| 1842 | for (idx = 1; idx >= 0; --idx) { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1843 | struct snd_pcm_substream *substream = pcm_oss_file->streams[idx]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1844 | if (substream == NULL) |
| 1845 | continue; |
| 1846 | if ((err = snd_pcm_oss_set_fragment1(substream, val)) < 0) |
| 1847 | return err; |
| 1848 | } |
| 1849 | return err; |
| 1850 | } |
| 1851 | |
| 1852 | static int snd_pcm_oss_nonblock(struct file * file) |
| 1853 | { |
| 1854 | file->f_flags |= O_NONBLOCK; |
| 1855 | return 0; |
| 1856 | } |
| 1857 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1858 | 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] | 1859 | { |
| 1860 | |
| 1861 | if (substream == NULL) { |
| 1862 | res &= ~DSP_CAP_DUPLEX; |
| 1863 | return res; |
| 1864 | } |
| 1865 | #ifdef DSP_CAP_MULTI |
| 1866 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) |
| 1867 | if (substream->pstr->substream_count > 1) |
| 1868 | res |= DSP_CAP_MULTI; |
| 1869 | #endif |
| 1870 | /* DSP_CAP_REALTIME is set all times: */ |
| 1871 | /* all ALSA drivers can return actual pointer in ring buffer */ |
| 1872 | #if defined(DSP_CAP_REALTIME) && 0 |
| 1873 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1874 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1875 | if (runtime->info & (SNDRV_PCM_INFO_BLOCK_TRANSFER|SNDRV_PCM_INFO_BATCH)) |
| 1876 | res &= ~DSP_CAP_REALTIME; |
| 1877 | } |
| 1878 | #endif |
| 1879 | return res; |
| 1880 | } |
| 1881 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1882 | 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] | 1883 | { |
| 1884 | int result, idx; |
| 1885 | |
| 1886 | result = DSP_CAP_TRIGGER | DSP_CAP_MMAP | DSP_CAP_DUPLEX | DSP_CAP_REALTIME; |
| 1887 | for (idx = 0; idx < 2; idx++) { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1888 | struct snd_pcm_substream *substream = pcm_oss_file->streams[idx]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1889 | result = snd_pcm_oss_get_caps1(substream, result); |
| 1890 | } |
| 1891 | result |= 0x0001; /* revision - same as SB AWE 64 */ |
| 1892 | return result; |
| 1893 | } |
| 1894 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1895 | 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] | 1896 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1897 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1898 | snd_pcm_uframes_t appl_ptr; |
| 1899 | appl_ptr = hw_ptr + runtime->buffer_size; |
| 1900 | appl_ptr %= runtime->boundary; |
| 1901 | runtime->control->appl_ptr = appl_ptr; |
| 1902 | } |
| 1903 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1904 | 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] | 1905 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1906 | struct snd_pcm_runtime *runtime; |
| 1907 | struct snd_pcm_substream *psubstream = NULL, *csubstream = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1908 | int err, cmd; |
| 1909 | |
| 1910 | #ifdef OSS_DEBUG |
| 1911 | printk("pcm_oss: trigger = 0x%x\n", trigger); |
| 1912 | #endif |
| 1913 | |
| 1914 | psubstream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK]; |
| 1915 | csubstream = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE]; |
| 1916 | |
| 1917 | if (psubstream) { |
| 1918 | if ((err = snd_pcm_oss_make_ready(psubstream)) < 0) |
| 1919 | return err; |
| 1920 | } |
| 1921 | if (csubstream) { |
| 1922 | if ((err = snd_pcm_oss_make_ready(csubstream)) < 0) |
| 1923 | return err; |
| 1924 | } |
| 1925 | if (psubstream) { |
| 1926 | runtime = psubstream->runtime; |
| 1927 | if (trigger & PCM_ENABLE_OUTPUT) { |
| 1928 | if (runtime->oss.trigger) |
| 1929 | goto _skip1; |
Takashi Iwai | 9c323fc | 2006-04-28 15:13:41 +0200 | [diff] [blame] | 1930 | if (atomic_read(&psubstream->mmap_count)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1931 | snd_pcm_oss_simulate_fill(psubstream, runtime->hw_ptr_interrupt); |
| 1932 | runtime->oss.trigger = 1; |
| 1933 | runtime->start_threshold = 1; |
| 1934 | cmd = SNDRV_PCM_IOCTL_START; |
| 1935 | } else { |
| 1936 | if (!runtime->oss.trigger) |
| 1937 | goto _skip1; |
| 1938 | runtime->oss.trigger = 0; |
| 1939 | runtime->start_threshold = runtime->boundary; |
| 1940 | cmd = SNDRV_PCM_IOCTL_DROP; |
| 1941 | runtime->oss.prepare = 1; |
| 1942 | } |
Takashi Iwai | bf1bbb5 | 2006-03-27 16:22:45 +0200 | [diff] [blame] | 1943 | err = snd_pcm_kernel_ioctl(psubstream, cmd, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1944 | if (err < 0) |
| 1945 | return err; |
| 1946 | } |
| 1947 | _skip1: |
| 1948 | if (csubstream) { |
| 1949 | runtime = csubstream->runtime; |
| 1950 | if (trigger & PCM_ENABLE_INPUT) { |
| 1951 | if (runtime->oss.trigger) |
| 1952 | goto _skip2; |
| 1953 | runtime->oss.trigger = 1; |
| 1954 | runtime->start_threshold = 1; |
| 1955 | cmd = SNDRV_PCM_IOCTL_START; |
| 1956 | } else { |
| 1957 | if (!runtime->oss.trigger) |
| 1958 | goto _skip2; |
| 1959 | runtime->oss.trigger = 0; |
| 1960 | runtime->start_threshold = runtime->boundary; |
| 1961 | cmd = SNDRV_PCM_IOCTL_DROP; |
| 1962 | runtime->oss.prepare = 1; |
| 1963 | } |
Takashi Iwai | bf1bbb5 | 2006-03-27 16:22:45 +0200 | [diff] [blame] | 1964 | err = snd_pcm_kernel_ioctl(csubstream, cmd, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1965 | if (err < 0) |
| 1966 | return err; |
| 1967 | } |
| 1968 | _skip2: |
| 1969 | return 0; |
| 1970 | } |
| 1971 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1972 | 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] | 1973 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1974 | struct snd_pcm_substream *psubstream = NULL, *csubstream = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1975 | int result = 0; |
| 1976 | |
| 1977 | psubstream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK]; |
| 1978 | csubstream = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE]; |
| 1979 | if (psubstream && psubstream->runtime && psubstream->runtime->oss.trigger) |
| 1980 | result |= PCM_ENABLE_OUTPUT; |
| 1981 | if (csubstream && csubstream->runtime && csubstream->runtime->oss.trigger) |
| 1982 | result |= PCM_ENABLE_INPUT; |
| 1983 | return result; |
| 1984 | } |
| 1985 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1986 | 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] | 1987 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1988 | struct snd_pcm_substream *substream; |
| 1989 | struct snd_pcm_runtime *runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1990 | snd_pcm_sframes_t delay; |
| 1991 | int err; |
| 1992 | |
| 1993 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK]; |
| 1994 | if (substream == NULL) |
| 1995 | return -EINVAL; |
| 1996 | if ((err = snd_pcm_oss_make_ready(substream)) < 0) |
| 1997 | return err; |
| 1998 | runtime = substream->runtime; |
| 1999 | if (runtime->oss.params || runtime->oss.prepare) |
| 2000 | return 0; |
Takashi Iwai | bf1bbb5 | 2006-03-27 16:22:45 +0200 | [diff] [blame] | 2001 | err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DELAY, &delay); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2002 | if (err == -EPIPE) |
| 2003 | delay = 0; /* hack for broken OSS applications */ |
| 2004 | else if (err < 0) |
| 2005 | return err; |
| 2006 | return snd_pcm_oss_bytes(substream, delay); |
| 2007 | } |
| 2008 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2009 | 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] | 2010 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2011 | struct snd_pcm_substream *substream; |
| 2012 | struct snd_pcm_runtime *runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2013 | snd_pcm_sframes_t delay; |
| 2014 | int fixup; |
| 2015 | struct count_info info; |
| 2016 | int err; |
| 2017 | |
| 2018 | if (_info == NULL) |
| 2019 | return -EFAULT; |
| 2020 | substream = pcm_oss_file->streams[stream]; |
| 2021 | if (substream == NULL) |
| 2022 | return -EINVAL; |
| 2023 | if ((err = snd_pcm_oss_make_ready(substream)) < 0) |
| 2024 | return err; |
| 2025 | runtime = substream->runtime; |
| 2026 | if (runtime->oss.params || runtime->oss.prepare) { |
| 2027 | memset(&info, 0, sizeof(info)); |
| 2028 | if (copy_to_user(_info, &info, sizeof(info))) |
| 2029 | return -EFAULT; |
| 2030 | return 0; |
| 2031 | } |
| 2032 | if (stream == SNDRV_PCM_STREAM_PLAYBACK) { |
| 2033 | err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DELAY, &delay); |
| 2034 | if (err == -EPIPE || err == -ESTRPIPE || (! err && delay < 0)) { |
| 2035 | err = 0; |
| 2036 | delay = 0; |
| 2037 | fixup = 0; |
| 2038 | } else { |
| 2039 | fixup = runtime->oss.buffer_used; |
| 2040 | } |
| 2041 | } else { |
| 2042 | err = snd_pcm_oss_capture_position_fixup(substream, &delay); |
| 2043 | fixup = -runtime->oss.buffer_used; |
| 2044 | } |
| 2045 | if (err < 0) |
| 2046 | return err; |
| 2047 | 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] | 2048 | if (atomic_read(&substream->mmap_count)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2049 | snd_pcm_sframes_t n; |
| 2050 | n = (delay = runtime->hw_ptr_interrupt) - runtime->oss.prev_hw_ptr_interrupt; |
| 2051 | if (n < 0) |
| 2052 | n += runtime->boundary; |
| 2053 | info.blocks = n / runtime->period_size; |
| 2054 | runtime->oss.prev_hw_ptr_interrupt = delay; |
| 2055 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) |
| 2056 | snd_pcm_oss_simulate_fill(substream, delay); |
| 2057 | info.bytes = snd_pcm_oss_bytes(substream, runtime->status->hw_ptr) & INT_MAX; |
| 2058 | } else { |
Jaroslav Kysela | 5ac0fab | 2005-05-31 16:59:39 +0200 | [diff] [blame] | 2059 | delay = snd_pcm_oss_bytes(substream, delay); |
Jaroslav Kysela | fb4bd0a | 2005-05-31 15:44:23 +0200 | [diff] [blame] | 2060 | if (stream == SNDRV_PCM_STREAM_PLAYBACK) { |
Takashi Iwai | 060d77b | 2006-03-27 16:44:52 +0200 | [diff] [blame] | 2061 | if (substream->oss.setup.buggyptr) |
Takashi Iwai | 10f69f9 | 2005-09-08 13:48:34 +0200 | [diff] [blame] | 2062 | info.blocks = (runtime->oss.buffer_bytes - delay - fixup) / runtime->oss.period_bytes; |
| 2063 | else |
| 2064 | info.blocks = (delay + fixup) / runtime->oss.period_bytes; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2065 | info.bytes = (runtime->oss.bytes - delay) & INT_MAX; |
Jaroslav Kysela | fb4bd0a | 2005-05-31 15:44:23 +0200 | [diff] [blame] | 2066 | } else { |
Jaroslav Kysela | 5ac0fab | 2005-05-31 16:59:39 +0200 | [diff] [blame] | 2067 | delay += fixup; |
| 2068 | info.blocks = delay / runtime->oss.period_bytes; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2069 | info.bytes = (runtime->oss.bytes + delay) & INT_MAX; |
Jaroslav Kysela | fb4bd0a | 2005-05-31 15:44:23 +0200 | [diff] [blame] | 2070 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2071 | } |
| 2072 | if (copy_to_user(_info, &info, sizeof(info))) |
| 2073 | return -EFAULT; |
| 2074 | return 0; |
| 2075 | } |
| 2076 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2077 | 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] | 2078 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2079 | struct snd_pcm_substream *substream; |
| 2080 | struct snd_pcm_runtime *runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2081 | snd_pcm_sframes_t avail; |
| 2082 | int fixup; |
| 2083 | struct audio_buf_info info; |
| 2084 | int err; |
| 2085 | |
| 2086 | if (_info == NULL) |
| 2087 | return -EFAULT; |
| 2088 | substream = pcm_oss_file->streams[stream]; |
| 2089 | if (substream == NULL) |
| 2090 | return -EINVAL; |
| 2091 | runtime = substream->runtime; |
| 2092 | |
| 2093 | if (runtime->oss.params && |
| 2094 | (err = snd_pcm_oss_change_params(substream)) < 0) |
| 2095 | return err; |
| 2096 | |
| 2097 | info.fragsize = runtime->oss.period_bytes; |
| 2098 | info.fragstotal = runtime->periods; |
| 2099 | if (runtime->oss.prepare) { |
| 2100 | if (stream == SNDRV_PCM_STREAM_PLAYBACK) { |
| 2101 | info.bytes = runtime->oss.period_bytes * runtime->oss.periods; |
| 2102 | info.fragments = runtime->oss.periods; |
| 2103 | } else { |
| 2104 | info.bytes = 0; |
| 2105 | info.fragments = 0; |
| 2106 | } |
| 2107 | } else { |
| 2108 | if (stream == SNDRV_PCM_STREAM_PLAYBACK) { |
| 2109 | err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DELAY, &avail); |
| 2110 | if (err == -EPIPE || err == -ESTRPIPE || (! err && avail < 0)) { |
| 2111 | avail = runtime->buffer_size; |
| 2112 | err = 0; |
| 2113 | fixup = 0; |
| 2114 | } else { |
| 2115 | avail = runtime->buffer_size - avail; |
| 2116 | fixup = -runtime->oss.buffer_used; |
| 2117 | } |
| 2118 | } else { |
| 2119 | err = snd_pcm_oss_capture_position_fixup(substream, &avail); |
| 2120 | fixup = runtime->oss.buffer_used; |
| 2121 | } |
| 2122 | if (err < 0) |
| 2123 | return err; |
| 2124 | info.bytes = snd_pcm_oss_bytes(substream, avail) + fixup; |
| 2125 | info.fragments = info.bytes / runtime->oss.period_bytes; |
| 2126 | } |
| 2127 | |
| 2128 | #ifdef OSS_DEBUG |
| 2129 | printk("pcm_oss: space: bytes = %i, fragments = %i, fragstotal = %i, fragsize = %i\n", info.bytes, info.fragments, info.fragstotal, info.fragsize); |
| 2130 | #endif |
| 2131 | if (copy_to_user(_info, &info, sizeof(info))) |
| 2132 | return -EFAULT; |
| 2133 | return 0; |
| 2134 | } |
| 2135 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2136 | 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] | 2137 | { |
| 2138 | // it won't be probably implemented |
| 2139 | // snd_printd("TODO: snd_pcm_oss_get_mapbuf\n"); |
| 2140 | return -EINVAL; |
| 2141 | } |
| 2142 | |
Takashi Iwai | 060d77b | 2006-03-27 16:44:52 +0200 | [diff] [blame] | 2143 | static const char *strip_task_path(const char *path) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2144 | { |
Takashi Iwai | 060d77b | 2006-03-27 16:44:52 +0200 | [diff] [blame] | 2145 | const char *ptr, *ptrl = NULL; |
| 2146 | for (ptr = path; *ptr; ptr++) { |
| 2147 | if (*ptr == '/') |
| 2148 | ptrl = ptr + 1; |
| 2149 | } |
| 2150 | return ptrl; |
| 2151 | } |
| 2152 | |
| 2153 | static void snd_pcm_oss_look_for_setup(struct snd_pcm *pcm, int stream, |
| 2154 | const char *task_name, |
| 2155 | struct snd_pcm_oss_setup *rsetup) |
| 2156 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2157 | struct snd_pcm_oss_setup *setup; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2158 | |
Ingo Molnar | 1a60d4c | 2006-01-16 16:29:08 +0100 | [diff] [blame] | 2159 | mutex_lock(&pcm->streams[stream].oss.setup_mutex); |
Takashi Iwai | 060d77b | 2006-03-27 16:44:52 +0200 | [diff] [blame] | 2160 | do { |
| 2161 | for (setup = pcm->streams[stream].oss.setup_list; setup; |
| 2162 | setup = setup->next) { |
| 2163 | if (!strcmp(setup->task_name, task_name)) |
| 2164 | goto out; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2165 | } |
Takashi Iwai | 060d77b | 2006-03-27 16:44:52 +0200 | [diff] [blame] | 2166 | } while ((task_name = strip_task_path(task_name)) != NULL); |
| 2167 | out: |
| 2168 | if (setup) |
| 2169 | *rsetup = *setup; |
Ingo Molnar | 1a60d4c | 2006-01-16 16:29:08 +0100 | [diff] [blame] | 2170 | mutex_unlock(&pcm->streams[stream].oss.setup_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2171 | } |
| 2172 | |
Takashi Iwai | 3bf75f9 | 2006-03-27 16:40:49 +0200 | [diff] [blame] | 2173 | static void snd_pcm_oss_release_substream(struct snd_pcm_substream *substream) |
| 2174 | { |
| 2175 | struct snd_pcm_runtime *runtime; |
| 2176 | runtime = substream->runtime; |
| 2177 | vfree(runtime->oss.buffer); |
| 2178 | runtime->oss.buffer = NULL; |
| 2179 | #ifdef CONFIG_SND_PCM_OSS_PLUGINS |
| 2180 | snd_pcm_oss_plugin_clear(substream); |
| 2181 | #endif |
| 2182 | substream->oss.oss = 0; |
| 2183 | } |
| 2184 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2185 | static void snd_pcm_oss_init_substream(struct snd_pcm_substream *substream, |
| 2186 | struct snd_pcm_oss_setup *setup, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2187 | int minor) |
| 2188 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2189 | struct snd_pcm_runtime *runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2190 | |
| 2191 | substream->oss.oss = 1; |
Takashi Iwai | 060d77b | 2006-03-27 16:44:52 +0200 | [diff] [blame] | 2192 | substream->oss.setup = *setup; |
Takashi Iwai | 3bf75f9 | 2006-03-27 16:40:49 +0200 | [diff] [blame] | 2193 | if (setup->nonblock) |
Takashi Iwai | 0df63e4 | 2006-04-28 15:13:41 +0200 | [diff] [blame] | 2194 | substream->f_flags |= O_NONBLOCK; |
Takashi Iwai | 1576274 | 2006-04-06 19:47:42 +0200 | [diff] [blame] | 2195 | else if (setup->block) |
Takashi Iwai | 0df63e4 | 2006-04-28 15:13:41 +0200 | [diff] [blame] | 2196 | substream->f_flags &= ~O_NONBLOCK; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2197 | runtime = substream->runtime; |
| 2198 | runtime->oss.params = 1; |
| 2199 | runtime->oss.trigger = 1; |
| 2200 | runtime->oss.rate = 8000; |
Takashi Iwai | e3a5d59 | 2006-11-14 13:03:19 +0100 | [diff] [blame] | 2201 | mutex_init(&runtime->oss.params_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2202 | switch (SNDRV_MINOR_OSS_DEVICE(minor)) { |
| 2203 | case SNDRV_MINOR_OSS_PCM_8: |
| 2204 | runtime->oss.format = AFMT_U8; |
| 2205 | break; |
| 2206 | case SNDRV_MINOR_OSS_PCM_16: |
| 2207 | runtime->oss.format = AFMT_S16_LE; |
| 2208 | break; |
| 2209 | default: |
| 2210 | runtime->oss.format = AFMT_MU_LAW; |
| 2211 | } |
| 2212 | runtime->oss.channels = 1; |
| 2213 | runtime->oss.fragshift = 0; |
| 2214 | runtime->oss.maxfrags = 0; |
| 2215 | runtime->oss.subdivision = 0; |
Takashi Iwai | 3bf75f9 | 2006-03-27 16:40:49 +0200 | [diff] [blame] | 2216 | substream->pcm_release = snd_pcm_oss_release_substream; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2217 | } |
| 2218 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2219 | 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] | 2220 | { |
| 2221 | int cidx; |
| 2222 | snd_assert(pcm_oss_file != NULL, return -ENXIO); |
| 2223 | for (cidx = 0; cidx < 2; ++cidx) { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2224 | struct snd_pcm_substream *substream = pcm_oss_file->streams[cidx]; |
Takashi Iwai | 3bf75f9 | 2006-03-27 16:40:49 +0200 | [diff] [blame] | 2225 | if (substream) |
| 2226 | snd_pcm_release_substream(substream); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2227 | } |
| 2228 | kfree(pcm_oss_file); |
| 2229 | return 0; |
| 2230 | } |
| 2231 | |
| 2232 | static int snd_pcm_oss_open_file(struct file *file, |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2233 | struct snd_pcm *pcm, |
| 2234 | struct snd_pcm_oss_file **rpcm_oss_file, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2235 | int minor, |
Takashi Iwai | 060d77b | 2006-03-27 16:44:52 +0200 | [diff] [blame] | 2236 | struct snd_pcm_oss_setup *setup) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2237 | { |
Takashi Iwai | 3bf75f9 | 2006-03-27 16:40:49 +0200 | [diff] [blame] | 2238 | int idx, err; |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2239 | struct snd_pcm_oss_file *pcm_oss_file; |
Takashi Iwai | 3bf75f9 | 2006-03-27 16:40:49 +0200 | [diff] [blame] | 2240 | struct snd_pcm_substream *substream; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2241 | unsigned int f_mode = file->f_mode; |
| 2242 | |
| 2243 | snd_assert(rpcm_oss_file != NULL, return -EINVAL); |
| 2244 | *rpcm_oss_file = NULL; |
| 2245 | |
Takashi Iwai | ca2c096 | 2005-09-09 14:20:23 +0200 | [diff] [blame] | 2246 | pcm_oss_file = kzalloc(sizeof(*pcm_oss_file), GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2247 | if (pcm_oss_file == NULL) |
| 2248 | return -ENOMEM; |
| 2249 | |
| 2250 | if ((f_mode & (FMODE_WRITE|FMODE_READ)) == (FMODE_WRITE|FMODE_READ) && |
| 2251 | (pcm->info_flags & SNDRV_PCM_INFO_HALF_DUPLEX)) |
| 2252 | f_mode = FMODE_WRITE; |
Takashi Iwai | 3bf75f9 | 2006-03-27 16:40:49 +0200 | [diff] [blame] | 2253 | |
Takashi Iwai | 0df63e4 | 2006-04-28 15:13:41 +0200 | [diff] [blame] | 2254 | file->f_flags &= ~O_APPEND; |
Takashi Iwai | 3bf75f9 | 2006-03-27 16:40:49 +0200 | [diff] [blame] | 2255 | for (idx = 0; idx < 2; idx++) { |
Takashi Iwai | 060d77b | 2006-03-27 16:44:52 +0200 | [diff] [blame] | 2256 | if (setup[idx].disable) |
Takashi Iwai | 3bf75f9 | 2006-03-27 16:40:49 +0200 | [diff] [blame] | 2257 | continue; |
Takashi Iwai | 6cb53e7 | 2006-08-02 21:12:09 +0200 | [diff] [blame] | 2258 | if (! pcm->streams[idx].substream_count) |
| 2259 | continue; /* no matching substream */ |
Takashi Iwai | 3bf75f9 | 2006-03-27 16:40:49 +0200 | [diff] [blame] | 2260 | if (idx == SNDRV_PCM_STREAM_PLAYBACK) { |
| 2261 | if (! (f_mode & FMODE_WRITE)) |
| 2262 | continue; |
| 2263 | } else { |
| 2264 | if (! (f_mode & FMODE_READ)) |
| 2265 | continue; |
| 2266 | } |
| 2267 | err = snd_pcm_open_substream(pcm, idx, file, &substream); |
| 2268 | if (err < 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2269 | snd_pcm_oss_release_file(pcm_oss_file); |
| 2270 | return err; |
| 2271 | } |
Takashi Iwai | 3bf75f9 | 2006-03-27 16:40:49 +0200 | [diff] [blame] | 2272 | |
| 2273 | pcm_oss_file->streams[idx] = substream; |
Takashi Iwai | 1576274 | 2006-04-06 19:47:42 +0200 | [diff] [blame] | 2274 | substream->file = pcm_oss_file; |
Takashi Iwai | 060d77b | 2006-03-27 16:44:52 +0200 | [diff] [blame] | 2275 | snd_pcm_oss_init_substream(substream, &setup[idx], minor); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2276 | } |
| 2277 | |
OGAWA Hirofumi | bbdc1b7 | 2006-04-06 19:42:40 +0200 | [diff] [blame] | 2278 | if (!pcm_oss_file->streams[0] && !pcm_oss_file->streams[1]) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2279 | snd_pcm_oss_release_file(pcm_oss_file); |
| 2280 | return -EINVAL; |
| 2281 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2282 | |
| 2283 | file->private_data = pcm_oss_file; |
| 2284 | *rpcm_oss_file = pcm_oss_file; |
| 2285 | return 0; |
| 2286 | } |
| 2287 | |
| 2288 | |
Takashi Iwai | 93f2e37 | 2005-10-10 11:51:55 +0200 | [diff] [blame] | 2289 | static int snd_task_name(struct task_struct *task, char *name, size_t size) |
| 2290 | { |
| 2291 | unsigned int idx; |
| 2292 | |
| 2293 | snd_assert(task != NULL && name != NULL && size >= 2, return -EINVAL); |
| 2294 | for (idx = 0; idx < sizeof(task->comm) && idx + 1 < size; idx++) |
| 2295 | name[idx] = task->comm[idx]; |
| 2296 | name[idx] = '\0'; |
| 2297 | return 0; |
| 2298 | } |
| 2299 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2300 | static int snd_pcm_oss_open(struct inode *inode, struct file *file) |
| 2301 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2302 | int err; |
| 2303 | char task_name[32]; |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2304 | struct snd_pcm *pcm; |
| 2305 | struct snd_pcm_oss_file *pcm_oss_file; |
Takashi Iwai | 060d77b | 2006-03-27 16:44:52 +0200 | [diff] [blame] | 2306 | struct snd_pcm_oss_setup setup[2]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2307 | int nonblock; |
| 2308 | wait_queue_t wait; |
| 2309 | |
Clemens Ladisch | f87135f | 2005-11-20 14:06:59 +0100 | [diff] [blame] | 2310 | pcm = snd_lookup_oss_minor_data(iminor(inode), |
| 2311 | SNDRV_OSS_DEVICE_TYPE_PCM); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2312 | if (pcm == NULL) { |
| 2313 | err = -ENODEV; |
| 2314 | goto __error1; |
| 2315 | } |
| 2316 | err = snd_card_file_add(pcm->card, file); |
| 2317 | if (err < 0) |
| 2318 | goto __error1; |
| 2319 | if (!try_module_get(pcm->card->module)) { |
| 2320 | err = -EFAULT; |
| 2321 | goto __error2; |
| 2322 | } |
| 2323 | if (snd_task_name(current, task_name, sizeof(task_name)) < 0) { |
| 2324 | err = -EFAULT; |
| 2325 | goto __error; |
| 2326 | } |
Takashi Iwai | 1576274 | 2006-04-06 19:47:42 +0200 | [diff] [blame] | 2327 | memset(setup, 0, sizeof(setup)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2328 | if (file->f_mode & FMODE_WRITE) |
Takashi Iwai | 060d77b | 2006-03-27 16:44:52 +0200 | [diff] [blame] | 2329 | snd_pcm_oss_look_for_setup(pcm, SNDRV_PCM_STREAM_PLAYBACK, |
| 2330 | task_name, &setup[0]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2331 | if (file->f_mode & FMODE_READ) |
Takashi Iwai | 060d77b | 2006-03-27 16:44:52 +0200 | [diff] [blame] | 2332 | snd_pcm_oss_look_for_setup(pcm, SNDRV_PCM_STREAM_CAPTURE, |
| 2333 | task_name, &setup[1]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2334 | |
| 2335 | nonblock = !!(file->f_flags & O_NONBLOCK); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2336 | if (!nonblock) |
| 2337 | nonblock = nonblock_open; |
| 2338 | |
| 2339 | init_waitqueue_entry(&wait, current); |
| 2340 | add_wait_queue(&pcm->open_wait, &wait); |
Ingo Molnar | 1a60d4c | 2006-01-16 16:29:08 +0100 | [diff] [blame] | 2341 | mutex_lock(&pcm->open_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2342 | while (1) { |
| 2343 | err = snd_pcm_oss_open_file(file, pcm, &pcm_oss_file, |
Takashi Iwai | 3bf75f9 | 2006-03-27 16:40:49 +0200 | [diff] [blame] | 2344 | iminor(inode), setup); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2345 | if (err >= 0) |
| 2346 | break; |
| 2347 | if (err == -EAGAIN) { |
| 2348 | if (nonblock) { |
| 2349 | err = -EBUSY; |
| 2350 | break; |
| 2351 | } |
| 2352 | } else |
| 2353 | break; |
| 2354 | set_current_state(TASK_INTERRUPTIBLE); |
Ingo Molnar | 1a60d4c | 2006-01-16 16:29:08 +0100 | [diff] [blame] | 2355 | mutex_unlock(&pcm->open_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2356 | schedule(); |
Ingo Molnar | 1a60d4c | 2006-01-16 16:29:08 +0100 | [diff] [blame] | 2357 | mutex_lock(&pcm->open_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2358 | if (signal_pending(current)) { |
| 2359 | err = -ERESTARTSYS; |
| 2360 | break; |
| 2361 | } |
| 2362 | } |
| 2363 | remove_wait_queue(&pcm->open_wait, &wait); |
Ingo Molnar | 1a60d4c | 2006-01-16 16:29:08 +0100 | [diff] [blame] | 2364 | mutex_unlock(&pcm->open_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2365 | if (err < 0) |
| 2366 | goto __error; |
| 2367 | return err; |
| 2368 | |
| 2369 | __error: |
| 2370 | module_put(pcm->card->module); |
| 2371 | __error2: |
| 2372 | snd_card_file_remove(pcm->card, file); |
| 2373 | __error1: |
| 2374 | return err; |
| 2375 | } |
| 2376 | |
| 2377 | static int snd_pcm_oss_release(struct inode *inode, struct file *file) |
| 2378 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2379 | struct snd_pcm *pcm; |
| 2380 | struct snd_pcm_substream *substream; |
| 2381 | struct snd_pcm_oss_file *pcm_oss_file; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2382 | |
| 2383 | pcm_oss_file = file->private_data; |
| 2384 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK]; |
| 2385 | if (substream == NULL) |
| 2386 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE]; |
| 2387 | snd_assert(substream != NULL, return -ENXIO); |
| 2388 | pcm = substream->pcm; |
Takashi Iwai | de1b8b9 | 2006-11-08 15:41:29 +0100 | [diff] [blame] | 2389 | if (!pcm->card->shutdown) |
| 2390 | snd_pcm_oss_sync(pcm_oss_file); |
Ingo Molnar | 1a60d4c | 2006-01-16 16:29:08 +0100 | [diff] [blame] | 2391 | mutex_lock(&pcm->open_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2392 | snd_pcm_oss_release_file(pcm_oss_file); |
Ingo Molnar | 1a60d4c | 2006-01-16 16:29:08 +0100 | [diff] [blame] | 2393 | mutex_unlock(&pcm->open_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2394 | wake_up(&pcm->open_wait); |
| 2395 | module_put(pcm->card->module); |
| 2396 | snd_card_file_remove(pcm->card, file); |
| 2397 | return 0; |
| 2398 | } |
| 2399 | |
| 2400 | static long snd_pcm_oss_ioctl(struct file *file, unsigned int cmd, unsigned long arg) |
| 2401 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2402 | struct snd_pcm_oss_file *pcm_oss_file; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2403 | int __user *p = (int __user *)arg; |
| 2404 | int res; |
| 2405 | |
| 2406 | pcm_oss_file = file->private_data; |
| 2407 | if (cmd == OSS_GETVERSION) |
| 2408 | return put_user(SNDRV_OSS_VERSION, p); |
| 2409 | if (cmd == OSS_ALSAEMULVER) |
| 2410 | return put_user(1, p); |
| 2411 | #if defined(CONFIG_SND_MIXER_OSS) || (defined(MODULE) && defined(CONFIG_SND_MIXER_OSS_MODULE)) |
| 2412 | if (((cmd >> 8) & 0xff) == 'M') { /* mixer ioctl - for OSS compatibility */ |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2413 | struct snd_pcm_substream *substream; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2414 | int idx; |
| 2415 | for (idx = 0; idx < 2; ++idx) { |
| 2416 | substream = pcm_oss_file->streams[idx]; |
| 2417 | if (substream != NULL) |
| 2418 | break; |
| 2419 | } |
| 2420 | snd_assert(substream != NULL, return -ENXIO); |
| 2421 | return snd_mixer_oss_ioctl_card(substream->pcm->card, cmd, arg); |
| 2422 | } |
| 2423 | #endif |
| 2424 | if (((cmd >> 8) & 0xff) != 'P') |
| 2425 | return -EINVAL; |
| 2426 | #ifdef OSS_DEBUG |
| 2427 | printk("pcm_oss: ioctl = 0x%x\n", cmd); |
| 2428 | #endif |
| 2429 | switch (cmd) { |
| 2430 | case SNDCTL_DSP_RESET: |
| 2431 | return snd_pcm_oss_reset(pcm_oss_file); |
| 2432 | case SNDCTL_DSP_SYNC: |
| 2433 | return snd_pcm_oss_sync(pcm_oss_file); |
| 2434 | case SNDCTL_DSP_SPEED: |
| 2435 | if (get_user(res, p)) |
| 2436 | return -EFAULT; |
| 2437 | if ((res = snd_pcm_oss_set_rate(pcm_oss_file, res))<0) |
| 2438 | return res; |
| 2439 | return put_user(res, p); |
| 2440 | case SOUND_PCM_READ_RATE: |
| 2441 | res = snd_pcm_oss_get_rate(pcm_oss_file); |
| 2442 | if (res < 0) |
| 2443 | return res; |
| 2444 | return put_user(res, p); |
| 2445 | case SNDCTL_DSP_STEREO: |
| 2446 | if (get_user(res, p)) |
| 2447 | return -EFAULT; |
| 2448 | res = res > 0 ? 2 : 1; |
| 2449 | if ((res = snd_pcm_oss_set_channels(pcm_oss_file, res)) < 0) |
| 2450 | return res; |
| 2451 | return put_user(--res, p); |
| 2452 | case SNDCTL_DSP_GETBLKSIZE: |
| 2453 | res = snd_pcm_oss_get_block_size(pcm_oss_file); |
| 2454 | if (res < 0) |
| 2455 | return res; |
| 2456 | return put_user(res, p); |
| 2457 | case SNDCTL_DSP_SETFMT: |
| 2458 | if (get_user(res, p)) |
| 2459 | return -EFAULT; |
| 2460 | res = snd_pcm_oss_set_format(pcm_oss_file, res); |
| 2461 | if (res < 0) |
| 2462 | return res; |
| 2463 | return put_user(res, p); |
| 2464 | case SOUND_PCM_READ_BITS: |
| 2465 | res = snd_pcm_oss_get_format(pcm_oss_file); |
| 2466 | if (res < 0) |
| 2467 | return res; |
| 2468 | return put_user(res, p); |
| 2469 | case SNDCTL_DSP_CHANNELS: |
| 2470 | if (get_user(res, p)) |
| 2471 | return -EFAULT; |
| 2472 | res = snd_pcm_oss_set_channels(pcm_oss_file, res); |
| 2473 | if (res < 0) |
| 2474 | return res; |
| 2475 | return put_user(res, p); |
| 2476 | case SOUND_PCM_READ_CHANNELS: |
| 2477 | res = snd_pcm_oss_get_channels(pcm_oss_file); |
| 2478 | if (res < 0) |
| 2479 | return res; |
| 2480 | return put_user(res, p); |
| 2481 | case SOUND_PCM_WRITE_FILTER: |
| 2482 | case SOUND_PCM_READ_FILTER: |
| 2483 | return -EIO; |
| 2484 | case SNDCTL_DSP_POST: |
| 2485 | return snd_pcm_oss_post(pcm_oss_file); |
| 2486 | case SNDCTL_DSP_SUBDIVIDE: |
| 2487 | if (get_user(res, p)) |
| 2488 | return -EFAULT; |
| 2489 | res = snd_pcm_oss_set_subdivide(pcm_oss_file, res); |
| 2490 | if (res < 0) |
| 2491 | return res; |
| 2492 | return put_user(res, p); |
| 2493 | case SNDCTL_DSP_SETFRAGMENT: |
| 2494 | if (get_user(res, p)) |
| 2495 | return -EFAULT; |
| 2496 | return snd_pcm_oss_set_fragment(pcm_oss_file, res); |
| 2497 | case SNDCTL_DSP_GETFMTS: |
| 2498 | res = snd_pcm_oss_get_formats(pcm_oss_file); |
| 2499 | if (res < 0) |
| 2500 | return res; |
| 2501 | return put_user(res, p); |
| 2502 | case SNDCTL_DSP_GETOSPACE: |
| 2503 | case SNDCTL_DSP_GETISPACE: |
| 2504 | return snd_pcm_oss_get_space(pcm_oss_file, |
| 2505 | cmd == SNDCTL_DSP_GETISPACE ? |
| 2506 | SNDRV_PCM_STREAM_CAPTURE : SNDRV_PCM_STREAM_PLAYBACK, |
| 2507 | (struct audio_buf_info __user *) arg); |
| 2508 | case SNDCTL_DSP_NONBLOCK: |
| 2509 | return snd_pcm_oss_nonblock(file); |
| 2510 | case SNDCTL_DSP_GETCAPS: |
| 2511 | res = snd_pcm_oss_get_caps(pcm_oss_file); |
| 2512 | if (res < 0) |
| 2513 | return res; |
| 2514 | return put_user(res, p); |
| 2515 | case SNDCTL_DSP_GETTRIGGER: |
| 2516 | res = snd_pcm_oss_get_trigger(pcm_oss_file); |
| 2517 | if (res < 0) |
| 2518 | return res; |
| 2519 | return put_user(res, p); |
| 2520 | case SNDCTL_DSP_SETTRIGGER: |
| 2521 | if (get_user(res, p)) |
| 2522 | return -EFAULT; |
| 2523 | return snd_pcm_oss_set_trigger(pcm_oss_file, res); |
| 2524 | case SNDCTL_DSP_GETIPTR: |
| 2525 | case SNDCTL_DSP_GETOPTR: |
| 2526 | return snd_pcm_oss_get_ptr(pcm_oss_file, |
| 2527 | cmd == SNDCTL_DSP_GETIPTR ? |
| 2528 | SNDRV_PCM_STREAM_CAPTURE : SNDRV_PCM_STREAM_PLAYBACK, |
| 2529 | (struct count_info __user *) arg); |
| 2530 | case SNDCTL_DSP_MAPINBUF: |
| 2531 | case SNDCTL_DSP_MAPOUTBUF: |
| 2532 | return snd_pcm_oss_get_mapbuf(pcm_oss_file, |
| 2533 | cmd == SNDCTL_DSP_MAPINBUF ? |
| 2534 | SNDRV_PCM_STREAM_CAPTURE : SNDRV_PCM_STREAM_PLAYBACK, |
| 2535 | (struct buffmem_desc __user *) arg); |
| 2536 | case SNDCTL_DSP_SETSYNCRO: |
| 2537 | /* stop DMA now.. */ |
| 2538 | return 0; |
| 2539 | case SNDCTL_DSP_SETDUPLEX: |
| 2540 | if (snd_pcm_oss_get_caps(pcm_oss_file) & DSP_CAP_DUPLEX) |
| 2541 | return 0; |
| 2542 | return -EIO; |
| 2543 | case SNDCTL_DSP_GETODELAY: |
| 2544 | res = snd_pcm_oss_get_odelay(pcm_oss_file); |
| 2545 | if (res < 0) { |
| 2546 | /* it's for sure, some broken apps don't check for error codes */ |
| 2547 | put_user(0, p); |
| 2548 | return res; |
| 2549 | } |
| 2550 | return put_user(res, p); |
| 2551 | case SNDCTL_DSP_PROFILE: |
| 2552 | return 0; /* silently ignore */ |
| 2553 | default: |
| 2554 | snd_printd("pcm_oss: unknown command = 0x%x\n", cmd); |
| 2555 | } |
| 2556 | return -EINVAL; |
| 2557 | } |
| 2558 | |
| 2559 | #ifdef CONFIG_COMPAT |
| 2560 | /* all compatible */ |
| 2561 | #define snd_pcm_oss_ioctl_compat snd_pcm_oss_ioctl |
| 2562 | #else |
| 2563 | #define snd_pcm_oss_ioctl_compat NULL |
| 2564 | #endif |
| 2565 | |
| 2566 | static ssize_t snd_pcm_oss_read(struct file *file, char __user *buf, size_t count, loff_t *offset) |
| 2567 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2568 | struct snd_pcm_oss_file *pcm_oss_file; |
| 2569 | struct snd_pcm_substream *substream; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2570 | |
| 2571 | pcm_oss_file = file->private_data; |
| 2572 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE]; |
| 2573 | if (substream == NULL) |
| 2574 | return -ENXIO; |
Takashi Iwai | 0df63e4 | 2006-04-28 15:13:41 +0200 | [diff] [blame] | 2575 | substream->f_flags = file->f_flags & O_NONBLOCK; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2576 | #ifndef OSS_DEBUG |
| 2577 | return snd_pcm_oss_read1(substream, buf, count); |
| 2578 | #else |
| 2579 | { |
| 2580 | ssize_t res = snd_pcm_oss_read1(substream, buf, count); |
| 2581 | printk("pcm_oss: read %li bytes (returned %li bytes)\n", (long)count, (long)res); |
| 2582 | return res; |
| 2583 | } |
| 2584 | #endif |
| 2585 | } |
| 2586 | |
| 2587 | static ssize_t snd_pcm_oss_write(struct file *file, const char __user *buf, size_t count, loff_t *offset) |
| 2588 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2589 | struct snd_pcm_oss_file *pcm_oss_file; |
| 2590 | struct snd_pcm_substream *substream; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2591 | long result; |
| 2592 | |
| 2593 | pcm_oss_file = file->private_data; |
| 2594 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK]; |
| 2595 | if (substream == NULL) |
| 2596 | return -ENXIO; |
Takashi Iwai | 0df63e4 | 2006-04-28 15:13:41 +0200 | [diff] [blame] | 2597 | substream->f_flags = file->f_flags & O_NONBLOCK; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2598 | result = snd_pcm_oss_write1(substream, buf, count); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2599 | #ifdef OSS_DEBUG |
| 2600 | printk("pcm_oss: write %li bytes (wrote %li bytes)\n", (long)count, (long)result); |
| 2601 | #endif |
| 2602 | return result; |
| 2603 | } |
| 2604 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2605 | static int snd_pcm_oss_playback_ready(struct snd_pcm_substream *substream) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2606 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2607 | struct snd_pcm_runtime *runtime = substream->runtime; |
Takashi Iwai | 9c323fc | 2006-04-28 15:13:41 +0200 | [diff] [blame] | 2608 | if (atomic_read(&substream->mmap_count)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2609 | return runtime->oss.prev_hw_ptr_interrupt != runtime->hw_ptr_interrupt; |
| 2610 | else |
| 2611 | return snd_pcm_playback_avail(runtime) >= runtime->oss.period_frames; |
| 2612 | } |
| 2613 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2614 | static int snd_pcm_oss_capture_ready(struct snd_pcm_substream *substream) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2615 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2616 | struct snd_pcm_runtime *runtime = substream->runtime; |
Takashi Iwai | 9c323fc | 2006-04-28 15:13:41 +0200 | [diff] [blame] | 2617 | if (atomic_read(&substream->mmap_count)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2618 | return runtime->oss.prev_hw_ptr_interrupt != runtime->hw_ptr_interrupt; |
| 2619 | else |
| 2620 | return snd_pcm_capture_avail(runtime) >= runtime->oss.period_frames; |
| 2621 | } |
| 2622 | |
| 2623 | static unsigned int snd_pcm_oss_poll(struct file *file, poll_table * wait) |
| 2624 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2625 | struct snd_pcm_oss_file *pcm_oss_file; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2626 | unsigned int mask; |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2627 | struct snd_pcm_substream *psubstream = NULL, *csubstream = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2628 | |
| 2629 | pcm_oss_file = file->private_data; |
| 2630 | |
| 2631 | psubstream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK]; |
| 2632 | csubstream = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE]; |
| 2633 | |
| 2634 | mask = 0; |
| 2635 | if (psubstream != NULL) { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2636 | struct snd_pcm_runtime *runtime = psubstream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2637 | poll_wait(file, &runtime->sleep, wait); |
| 2638 | snd_pcm_stream_lock_irq(psubstream); |
| 2639 | if (runtime->status->state != SNDRV_PCM_STATE_DRAINING && |
| 2640 | (runtime->status->state != SNDRV_PCM_STATE_RUNNING || |
| 2641 | snd_pcm_oss_playback_ready(psubstream))) |
| 2642 | mask |= POLLOUT | POLLWRNORM; |
| 2643 | snd_pcm_stream_unlock_irq(psubstream); |
| 2644 | } |
| 2645 | if (csubstream != NULL) { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2646 | struct snd_pcm_runtime *runtime = csubstream->runtime; |
| 2647 | snd_pcm_state_t ostate; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2648 | poll_wait(file, &runtime->sleep, wait); |
| 2649 | snd_pcm_stream_lock_irq(csubstream); |
| 2650 | if ((ostate = runtime->status->state) != SNDRV_PCM_STATE_RUNNING || |
| 2651 | snd_pcm_oss_capture_ready(csubstream)) |
| 2652 | mask |= POLLIN | POLLRDNORM; |
| 2653 | snd_pcm_stream_unlock_irq(csubstream); |
| 2654 | if (ostate != SNDRV_PCM_STATE_RUNNING && runtime->oss.trigger) { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2655 | struct snd_pcm_oss_file ofile; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2656 | memset(&ofile, 0, sizeof(ofile)); |
| 2657 | ofile.streams[SNDRV_PCM_STREAM_CAPTURE] = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE]; |
| 2658 | runtime->oss.trigger = 0; |
| 2659 | snd_pcm_oss_set_trigger(&ofile, PCM_ENABLE_INPUT); |
| 2660 | } |
| 2661 | } |
| 2662 | |
| 2663 | return mask; |
| 2664 | } |
| 2665 | |
| 2666 | static int snd_pcm_oss_mmap(struct file *file, struct vm_area_struct *area) |
| 2667 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2668 | struct snd_pcm_oss_file *pcm_oss_file; |
| 2669 | struct snd_pcm_substream *substream = NULL; |
| 2670 | struct snd_pcm_runtime *runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2671 | int err; |
| 2672 | |
| 2673 | #ifdef OSS_DEBUG |
| 2674 | printk("pcm_oss: mmap begin\n"); |
| 2675 | #endif |
| 2676 | pcm_oss_file = file->private_data; |
| 2677 | switch ((area->vm_flags & (VM_READ | VM_WRITE))) { |
| 2678 | case VM_READ | VM_WRITE: |
| 2679 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK]; |
| 2680 | if (substream) |
| 2681 | break; |
| 2682 | /* Fall through */ |
| 2683 | case VM_READ: |
| 2684 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE]; |
| 2685 | break; |
| 2686 | case VM_WRITE: |
| 2687 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK]; |
| 2688 | break; |
| 2689 | default: |
| 2690 | return -EINVAL; |
| 2691 | } |
| 2692 | /* set VM_READ access as well to fix memset() routines that do |
| 2693 | reads before writes (to improve performance) */ |
| 2694 | area->vm_flags |= VM_READ; |
| 2695 | if (substream == NULL) |
| 2696 | return -ENXIO; |
| 2697 | runtime = substream->runtime; |
| 2698 | if (!(runtime->info & SNDRV_PCM_INFO_MMAP_VALID)) |
| 2699 | return -EIO; |
| 2700 | if (runtime->info & SNDRV_PCM_INFO_INTERLEAVED) |
| 2701 | runtime->access = SNDRV_PCM_ACCESS_MMAP_INTERLEAVED; |
| 2702 | else |
| 2703 | return -EIO; |
| 2704 | |
| 2705 | if (runtime->oss.params) { |
| 2706 | if ((err = snd_pcm_oss_change_params(substream)) < 0) |
| 2707 | return err; |
| 2708 | } |
Jaroslav Kysela | 21a3479 | 2006-01-13 09:12:11 +0100 | [diff] [blame] | 2709 | #ifdef CONFIG_SND_PCM_OSS_PLUGINS |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2710 | if (runtime->oss.plugin_first != NULL) |
| 2711 | return -EIO; |
Jaroslav Kysela | 21a3479 | 2006-01-13 09:12:11 +0100 | [diff] [blame] | 2712 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2713 | |
| 2714 | if (area->vm_pgoff != 0) |
| 2715 | return -EINVAL; |
| 2716 | |
| 2717 | err = snd_pcm_mmap_data(substream, file, area); |
| 2718 | if (err < 0) |
| 2719 | return err; |
| 2720 | runtime->oss.mmap_bytes = area->vm_end - area->vm_start; |
| 2721 | runtime->silence_threshold = 0; |
| 2722 | runtime->silence_size = 0; |
| 2723 | #ifdef OSS_DEBUG |
| 2724 | printk("pcm_oss: mmap ok, bytes = 0x%x\n", runtime->oss.mmap_bytes); |
| 2725 | #endif |
| 2726 | /* In mmap mode we never stop */ |
| 2727 | runtime->stop_threshold = runtime->boundary; |
| 2728 | |
| 2729 | return 0; |
| 2730 | } |
| 2731 | |
Takashi Iwai | b7d90a3 | 2006-04-25 12:56:04 +0200 | [diff] [blame] | 2732 | #ifdef CONFIG_SND_VERBOSE_PROCFS |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2733 | /* |
| 2734 | * /proc interface |
| 2735 | */ |
| 2736 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2737 | static void snd_pcm_oss_proc_read(struct snd_info_entry *entry, |
| 2738 | struct snd_info_buffer *buffer) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2739 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2740 | struct snd_pcm_str *pstr = entry->private_data; |
| 2741 | struct snd_pcm_oss_setup *setup = pstr->oss.setup_list; |
Ingo Molnar | 1a60d4c | 2006-01-16 16:29:08 +0100 | [diff] [blame] | 2742 | mutex_lock(&pstr->oss.setup_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2743 | while (setup) { |
| 2744 | snd_iprintf(buffer, "%s %u %u%s%s%s%s%s%s\n", |
| 2745 | setup->task_name, |
| 2746 | setup->periods, |
| 2747 | setup->period_size, |
| 2748 | setup->disable ? " disable" : "", |
| 2749 | setup->direct ? " direct" : "", |
| 2750 | setup->block ? " block" : "", |
| 2751 | setup->nonblock ? " non-block" : "", |
| 2752 | setup->partialfrag ? " partial-frag" : "", |
| 2753 | setup->nosilence ? " no-silence" : ""); |
| 2754 | setup = setup->next; |
| 2755 | } |
Ingo Molnar | 1a60d4c | 2006-01-16 16:29:08 +0100 | [diff] [blame] | 2756 | mutex_unlock(&pstr->oss.setup_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2757 | } |
| 2758 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2759 | 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] | 2760 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2761 | struct snd_pcm_oss_setup *setup, *setupn; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2762 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2763 | for (setup = pstr->oss.setup_list, pstr->oss.setup_list = NULL; |
| 2764 | setup; setup = setupn) { |
| 2765 | setupn = setup->next; |
| 2766 | kfree(setup->task_name); |
| 2767 | kfree(setup); |
| 2768 | } |
| 2769 | pstr->oss.setup_list = NULL; |
| 2770 | } |
| 2771 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2772 | static void snd_pcm_oss_proc_write(struct snd_info_entry *entry, |
| 2773 | struct snd_info_buffer *buffer) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2774 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2775 | struct snd_pcm_str *pstr = entry->private_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2776 | char line[128], str[32], task_name[32], *ptr; |
| 2777 | int idx1; |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2778 | struct snd_pcm_oss_setup *setup, *setup1, template; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2779 | |
| 2780 | while (!snd_info_get_line(buffer, line, sizeof(line))) { |
Ingo Molnar | 1a60d4c | 2006-01-16 16:29:08 +0100 | [diff] [blame] | 2781 | mutex_lock(&pstr->oss.setup_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2782 | memset(&template, 0, sizeof(template)); |
| 2783 | ptr = snd_info_get_str(task_name, line, sizeof(task_name)); |
| 2784 | if (!strcmp(task_name, "clear") || !strcmp(task_name, "erase")) { |
| 2785 | snd_pcm_oss_proc_free_setup_list(pstr); |
Ingo Molnar | 1a60d4c | 2006-01-16 16:29:08 +0100 | [diff] [blame] | 2786 | mutex_unlock(&pstr->oss.setup_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2787 | continue; |
| 2788 | } |
| 2789 | for (setup = pstr->oss.setup_list; setup; setup = setup->next) { |
| 2790 | if (!strcmp(setup->task_name, task_name)) { |
| 2791 | template = *setup; |
| 2792 | break; |
| 2793 | } |
| 2794 | } |
| 2795 | ptr = snd_info_get_str(str, ptr, sizeof(str)); |
| 2796 | template.periods = simple_strtoul(str, NULL, 10); |
| 2797 | ptr = snd_info_get_str(str, ptr, sizeof(str)); |
| 2798 | template.period_size = simple_strtoul(str, NULL, 10); |
| 2799 | for (idx1 = 31; idx1 >= 0; idx1--) |
| 2800 | if (template.period_size & (1 << idx1)) |
| 2801 | break; |
| 2802 | for (idx1--; idx1 >= 0; idx1--) |
| 2803 | template.period_size &= ~(1 << idx1); |
| 2804 | do { |
| 2805 | ptr = snd_info_get_str(str, ptr, sizeof(str)); |
| 2806 | if (!strcmp(str, "disable")) { |
| 2807 | template.disable = 1; |
| 2808 | } else if (!strcmp(str, "direct")) { |
| 2809 | template.direct = 1; |
| 2810 | } else if (!strcmp(str, "block")) { |
| 2811 | template.block = 1; |
| 2812 | } else if (!strcmp(str, "non-block")) { |
| 2813 | template.nonblock = 1; |
| 2814 | } else if (!strcmp(str, "partial-frag")) { |
| 2815 | template.partialfrag = 1; |
| 2816 | } else if (!strcmp(str, "no-silence")) { |
| 2817 | template.nosilence = 1; |
Takashi Iwai | 10f69f9 | 2005-09-08 13:48:34 +0200 | [diff] [blame] | 2818 | } else if (!strcmp(str, "buggy-ptr")) { |
| 2819 | template.buggyptr = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2820 | } |
| 2821 | } while (*str); |
| 2822 | if (setup == NULL) { |
Takashi Iwai | 060d77b | 2006-03-27 16:44:52 +0200 | [diff] [blame] | 2823 | setup = kmalloc(sizeof(*setup), GFP_KERNEL); |
| 2824 | if (! setup) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2825 | buffer->error = -ENOMEM; |
Takashi Iwai | 060d77b | 2006-03-27 16:44:52 +0200 | [diff] [blame] | 2826 | mutex_lock(&pstr->oss.setup_mutex); |
| 2827 | return; |
| 2828 | } |
| 2829 | if (pstr->oss.setup_list == NULL) |
| 2830 | pstr->oss.setup_list = setup; |
| 2831 | else { |
| 2832 | for (setup1 = pstr->oss.setup_list; |
| 2833 | setup1->next; setup1 = setup1->next); |
| 2834 | setup1->next = setup; |
| 2835 | } |
| 2836 | template.task_name = kstrdup(task_name, GFP_KERNEL); |
| 2837 | if (! template.task_name) { |
| 2838 | kfree(setup); |
| 2839 | buffer->error = -ENOMEM; |
| 2840 | mutex_lock(&pstr->oss.setup_mutex); |
| 2841 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2842 | } |
| 2843 | } |
Takashi Iwai | 060d77b | 2006-03-27 16:44:52 +0200 | [diff] [blame] | 2844 | *setup = template; |
Ingo Molnar | 1a60d4c | 2006-01-16 16:29:08 +0100 | [diff] [blame] | 2845 | mutex_unlock(&pstr->oss.setup_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2846 | } |
| 2847 | } |
| 2848 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2849 | static void snd_pcm_oss_proc_init(struct snd_pcm *pcm) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2850 | { |
| 2851 | int stream; |
| 2852 | for (stream = 0; stream < 2; ++stream) { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2853 | struct snd_info_entry *entry; |
| 2854 | struct snd_pcm_str *pstr = &pcm->streams[stream]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2855 | if (pstr->substream_count == 0) |
| 2856 | continue; |
| 2857 | if ((entry = snd_info_create_card_entry(pcm->card, "oss", pstr->proc_root)) != NULL) { |
| 2858 | entry->content = SNDRV_INFO_CONTENT_TEXT; |
| 2859 | entry->mode = S_IFREG | S_IRUGO | S_IWUSR; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2860 | entry->c.text.read = snd_pcm_oss_proc_read; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2861 | entry->c.text.write = snd_pcm_oss_proc_write; |
| 2862 | entry->private_data = pstr; |
| 2863 | if (snd_info_register(entry) < 0) { |
| 2864 | snd_info_free_entry(entry); |
| 2865 | entry = NULL; |
| 2866 | } |
| 2867 | } |
| 2868 | pstr->oss.proc_entry = entry; |
| 2869 | } |
| 2870 | } |
| 2871 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2872 | static void snd_pcm_oss_proc_done(struct snd_pcm *pcm) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2873 | { |
| 2874 | int stream; |
| 2875 | for (stream = 0; stream < 2; ++stream) { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2876 | struct snd_pcm_str *pstr = &pcm->streams[stream]; |
Takashi Iwai | 746d4a0 | 2006-06-23 14:37:59 +0200 | [diff] [blame] | 2877 | snd_info_free_entry(pstr->oss.proc_entry); |
| 2878 | pstr->oss.proc_entry = NULL; |
| 2879 | snd_pcm_oss_proc_free_setup_list(pstr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2880 | } |
| 2881 | } |
Takashi Iwai | b7d90a3 | 2006-04-25 12:56:04 +0200 | [diff] [blame] | 2882 | #else /* !CONFIG_SND_VERBOSE_PROCFS */ |
Takashi Iwai | 04f141a | 2005-12-01 10:43:51 +0100 | [diff] [blame] | 2883 | #define snd_pcm_oss_proc_init(pcm) |
| 2884 | #define snd_pcm_oss_proc_done(pcm) |
Takashi Iwai | b7d90a3 | 2006-04-25 12:56:04 +0200 | [diff] [blame] | 2885 | #endif /* CONFIG_SND_VERBOSE_PROCFS */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2886 | |
| 2887 | /* |
| 2888 | * ENTRY functions |
| 2889 | */ |
| 2890 | |
Arjan van de Ven | 9c2e08c | 2007-02-12 00:55:37 -0800 | [diff] [blame] | 2891 | static const struct file_operations snd_pcm_oss_f_reg = |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2892 | { |
| 2893 | .owner = THIS_MODULE, |
| 2894 | .read = snd_pcm_oss_read, |
| 2895 | .write = snd_pcm_oss_write, |
| 2896 | .open = snd_pcm_oss_open, |
| 2897 | .release = snd_pcm_oss_release, |
| 2898 | .poll = snd_pcm_oss_poll, |
| 2899 | .unlocked_ioctl = snd_pcm_oss_ioctl, |
| 2900 | .compat_ioctl = snd_pcm_oss_ioctl_compat, |
| 2901 | .mmap = snd_pcm_oss_mmap, |
| 2902 | }; |
| 2903 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2904 | static void register_oss_dsp(struct snd_pcm *pcm, int index) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2905 | { |
| 2906 | char name[128]; |
| 2907 | sprintf(name, "dsp%i%i", pcm->card->number, pcm->device); |
| 2908 | if (snd_register_oss_device(SNDRV_OSS_DEVICE_TYPE_PCM, |
Clemens Ladisch | 2af677f | 2005-11-20 14:03:48 +0100 | [diff] [blame] | 2909 | pcm->card, index, &snd_pcm_oss_f_reg, |
Clemens Ladisch | f87135f | 2005-11-20 14:06:59 +0100 | [diff] [blame] | 2910 | pcm, name) < 0) { |
Takashi Iwai | d3d579f | 2005-10-21 16:20:11 +0200 | [diff] [blame] | 2911 | snd_printk(KERN_ERR "unable to register OSS PCM device %i:%i\n", |
| 2912 | pcm->card->number, pcm->device); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2913 | } |
| 2914 | } |
| 2915 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2916 | static int snd_pcm_oss_register_minor(struct snd_pcm *pcm) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2917 | { |
| 2918 | pcm->oss.reg = 0; |
| 2919 | if (dsp_map[pcm->card->number] == (int)pcm->device) { |
| 2920 | char name[128]; |
| 2921 | int duplex; |
| 2922 | register_oss_dsp(pcm, 0); |
| 2923 | duplex = (pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream_count > 0 && |
| 2924 | pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream_count && |
| 2925 | !(pcm->info_flags & SNDRV_PCM_INFO_HALF_DUPLEX)); |
| 2926 | sprintf(name, "%s%s", pcm->name, duplex ? " (DUPLEX)" : ""); |
| 2927 | #ifdef SNDRV_OSS_INFO_DEV_AUDIO |
| 2928 | snd_oss_info_register(SNDRV_OSS_INFO_DEV_AUDIO, |
| 2929 | pcm->card->number, |
| 2930 | name); |
| 2931 | #endif |
| 2932 | pcm->oss.reg++; |
| 2933 | pcm->oss.reg_mask |= 1; |
| 2934 | } |
| 2935 | if (adsp_map[pcm->card->number] == (int)pcm->device) { |
| 2936 | register_oss_dsp(pcm, 1); |
| 2937 | pcm->oss.reg++; |
| 2938 | pcm->oss.reg_mask |= 2; |
| 2939 | } |
| 2940 | |
| 2941 | if (pcm->oss.reg) |
| 2942 | snd_pcm_oss_proc_init(pcm); |
| 2943 | |
| 2944 | return 0; |
| 2945 | } |
| 2946 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2947 | static int snd_pcm_oss_disconnect_minor(struct snd_pcm *pcm) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2948 | { |
| 2949 | if (pcm->oss.reg) { |
| 2950 | if (pcm->oss.reg_mask & 1) { |
| 2951 | pcm->oss.reg_mask &= ~1; |
| 2952 | snd_unregister_oss_device(SNDRV_OSS_DEVICE_TYPE_PCM, |
| 2953 | pcm->card, 0); |
| 2954 | } |
| 2955 | if (pcm->oss.reg_mask & 2) { |
| 2956 | pcm->oss.reg_mask &= ~2; |
| 2957 | snd_unregister_oss_device(SNDRV_OSS_DEVICE_TYPE_PCM, |
| 2958 | pcm->card, 1); |
| 2959 | } |
Takashi Iwai | c461482 | 2006-06-23 14:38:23 +0200 | [diff] [blame] | 2960 | if (dsp_map[pcm->card->number] == (int)pcm->device) { |
| 2961 | #ifdef SNDRV_OSS_INFO_DEV_AUDIO |
| 2962 | snd_oss_info_unregister(SNDRV_OSS_INFO_DEV_AUDIO, pcm->card->number); |
| 2963 | #endif |
| 2964 | } |
| 2965 | pcm->oss.reg = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2966 | } |
| 2967 | return 0; |
| 2968 | } |
| 2969 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2970 | static int snd_pcm_oss_unregister_minor(struct snd_pcm *pcm) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2971 | { |
| 2972 | snd_pcm_oss_disconnect_minor(pcm); |
Takashi Iwai | c461482 | 2006-06-23 14:38:23 +0200 | [diff] [blame] | 2973 | snd_pcm_oss_proc_done(pcm); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2974 | return 0; |
| 2975 | } |
| 2976 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2977 | static struct snd_pcm_notify snd_pcm_oss_notify = |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2978 | { |
| 2979 | .n_register = snd_pcm_oss_register_minor, |
| 2980 | .n_disconnect = snd_pcm_oss_disconnect_minor, |
| 2981 | .n_unregister = snd_pcm_oss_unregister_minor, |
| 2982 | }; |
| 2983 | |
| 2984 | static int __init alsa_pcm_oss_init(void) |
| 2985 | { |
| 2986 | int i; |
| 2987 | int err; |
| 2988 | |
| 2989 | /* check device map table */ |
| 2990 | for (i = 0; i < SNDRV_CARDS; i++) { |
| 2991 | if (dsp_map[i] < 0 || dsp_map[i] >= SNDRV_PCM_DEVICES) { |
Takashi Iwai | d3d579f | 2005-10-21 16:20:11 +0200 | [diff] [blame] | 2992 | snd_printk(KERN_ERR "invalid dsp_map[%d] = %d\n", |
| 2993 | i, dsp_map[i]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2994 | dsp_map[i] = 0; |
| 2995 | } |
| 2996 | if (adsp_map[i] < 0 || adsp_map[i] >= SNDRV_PCM_DEVICES) { |
Takashi Iwai | d3d579f | 2005-10-21 16:20:11 +0200 | [diff] [blame] | 2997 | snd_printk(KERN_ERR "invalid adsp_map[%d] = %d\n", |
| 2998 | i, adsp_map[i]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2999 | adsp_map[i] = 1; |
| 3000 | } |
| 3001 | } |
| 3002 | if ((err = snd_pcm_notify(&snd_pcm_oss_notify, 0)) < 0) |
| 3003 | return err; |
| 3004 | return 0; |
| 3005 | } |
| 3006 | |
| 3007 | static void __exit alsa_pcm_oss_exit(void) |
| 3008 | { |
| 3009 | snd_pcm_notify(&snd_pcm_oss_notify, 1); |
| 3010 | } |
| 3011 | |
| 3012 | module_init(alsa_pcm_oss_init) |
| 3013 | module_exit(alsa_pcm_oss_exit) |