Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Digital Audio (PCM) abstract layer / OSS compatible |
Jaroslav Kysela | c1017a4 | 2007-10-15 09:50:19 +0200 | [diff] [blame] | 3 | * Copyright (c) by Jaroslav Kysela <perex@perex.cz> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 29 | #include <linux/init.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 30 | #include <linux/slab.h> |
| 31 | #include <linux/time.h> |
| 32 | #include <linux/vmalloc.h> |
| 33 | #include <linux/moduleparam.h> |
Paulo Marques | 543537b | 2005-06-23 00:09:02 -0700 | [diff] [blame] | 34 | #include <linux/string.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 35 | #include <sound/core.h> |
| 36 | #include <sound/minors.h> |
| 37 | #include <sound/pcm.h> |
| 38 | #include <sound/pcm_params.h> |
| 39 | #include "pcm_plugin.h" |
| 40 | #include <sound/info.h> |
| 41 | #include <linux/soundcard.h> |
| 42 | #include <sound/initval.h> |
| 43 | |
| 44 | #define OSS_ALSAEMULVER _SIOR ('M', 249, int) |
| 45 | |
Takashi Iwai | 6581f4e | 2006-05-17 17:14:51 +0200 | [diff] [blame] | 46 | static int dsp_map[SNDRV_CARDS]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 47 | static int adsp_map[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS-1)] = 1}; |
| 48 | static int nonblock_open = 1; |
| 49 | |
Jaroslav Kysela | c1017a4 | 2007-10-15 09:50:19 +0200 | [diff] [blame] | 50 | MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>, Abramo Bagnara <abramo@alsa-project.org>"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 51 | MODULE_DESCRIPTION("PCM OSS emulation for ALSA."); |
| 52 | MODULE_LICENSE("GPL"); |
| 53 | module_param_array(dsp_map, int, NULL, 0444); |
| 54 | MODULE_PARM_DESC(dsp_map, "PCM device number assigned to 1st OSS device."); |
| 55 | module_param_array(adsp_map, int, NULL, 0444); |
| 56 | MODULE_PARM_DESC(adsp_map, "PCM device number assigned to 2nd OSS device."); |
| 57 | module_param(nonblock_open, bool, 0644); |
| 58 | MODULE_PARM_DESC(nonblock_open, "Don't block opening busy PCM devices."); |
| 59 | MODULE_ALIAS_SNDRV_MINOR(SNDRV_MINOR_OSS_PCM); |
| 60 | MODULE_ALIAS_SNDRV_MINOR(SNDRV_MINOR_OSS_PCM1); |
| 61 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 62 | extern int snd_mixer_oss_ioctl_card(struct snd_card *card, unsigned int cmd, unsigned long arg); |
| 63 | static int snd_pcm_oss_get_rate(struct snd_pcm_oss_file *pcm_oss_file); |
| 64 | static int snd_pcm_oss_get_channels(struct snd_pcm_oss_file *pcm_oss_file); |
| 65 | 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] | 66 | |
| 67 | static inline mm_segment_t snd_enter_user(void) |
| 68 | { |
| 69 | mm_segment_t fs = get_fs(); |
| 70 | set_fs(get_ds()); |
| 71 | return fs; |
| 72 | } |
| 73 | |
| 74 | static inline void snd_leave_user(mm_segment_t fs) |
| 75 | { |
| 76 | set_fs(fs); |
| 77 | } |
| 78 | |
Takashi Iwai | e88e8ae6 | 2006-04-28 15:13:40 +0200 | [diff] [blame] | 79 | /* |
| 80 | * helper functions to process hw_params |
| 81 | */ |
| 82 | static int snd_interval_refine_min(struct snd_interval *i, unsigned int min, int openmin) |
| 83 | { |
| 84 | int changed = 0; |
| 85 | if (i->min < min) { |
| 86 | i->min = min; |
| 87 | i->openmin = openmin; |
| 88 | changed = 1; |
| 89 | } else if (i->min == min && !i->openmin && openmin) { |
| 90 | i->openmin = 1; |
| 91 | changed = 1; |
| 92 | } |
| 93 | if (i->integer) { |
| 94 | if (i->openmin) { |
| 95 | i->min++; |
| 96 | i->openmin = 0; |
| 97 | } |
| 98 | } |
| 99 | if (snd_interval_checkempty(i)) { |
| 100 | snd_interval_none(i); |
| 101 | return -EINVAL; |
| 102 | } |
| 103 | return changed; |
| 104 | } |
| 105 | |
| 106 | static int snd_interval_refine_max(struct snd_interval *i, unsigned int max, int openmax) |
| 107 | { |
| 108 | int changed = 0; |
| 109 | if (i->max > max) { |
| 110 | i->max = max; |
| 111 | i->openmax = openmax; |
| 112 | changed = 1; |
| 113 | } else if (i->max == max && !i->openmax && openmax) { |
| 114 | i->openmax = 1; |
| 115 | changed = 1; |
| 116 | } |
| 117 | if (i->integer) { |
| 118 | if (i->openmax) { |
| 119 | i->max--; |
| 120 | i->openmax = 0; |
| 121 | } |
| 122 | } |
| 123 | if (snd_interval_checkempty(i)) { |
| 124 | snd_interval_none(i); |
| 125 | return -EINVAL; |
| 126 | } |
| 127 | return changed; |
| 128 | } |
| 129 | |
| 130 | static int snd_interval_refine_set(struct snd_interval *i, unsigned int val) |
| 131 | { |
| 132 | struct snd_interval t; |
| 133 | t.empty = 0; |
| 134 | t.min = t.max = val; |
| 135 | t.openmin = t.openmax = 0; |
| 136 | t.integer = 1; |
| 137 | return snd_interval_refine(i, &t); |
| 138 | } |
| 139 | |
| 140 | /** |
| 141 | * snd_pcm_hw_param_value_min |
| 142 | * @params: the hw_params instance |
| 143 | * @var: parameter to retrieve |
| 144 | * @dir: pointer to the direction (-1,0,1) or NULL |
| 145 | * |
| 146 | * Return the minimum value for field PAR. |
| 147 | */ |
| 148 | static unsigned int |
| 149 | snd_pcm_hw_param_value_min(const struct snd_pcm_hw_params *params, |
| 150 | snd_pcm_hw_param_t var, int *dir) |
| 151 | { |
| 152 | if (hw_is_mask(var)) { |
| 153 | if (dir) |
| 154 | *dir = 0; |
| 155 | return snd_mask_min(hw_param_mask_c(params, var)); |
| 156 | } |
| 157 | if (hw_is_interval(var)) { |
| 158 | const struct snd_interval *i = hw_param_interval_c(params, var); |
| 159 | if (dir) |
| 160 | *dir = i->openmin; |
| 161 | return snd_interval_min(i); |
| 162 | } |
| 163 | return -EINVAL; |
| 164 | } |
| 165 | |
| 166 | /** |
| 167 | * snd_pcm_hw_param_value_max |
| 168 | * @params: the hw_params instance |
| 169 | * @var: parameter to retrieve |
| 170 | * @dir: pointer to the direction (-1,0,1) or NULL |
| 171 | * |
| 172 | * Return the maximum value for field PAR. |
| 173 | */ |
| 174 | static unsigned int |
| 175 | snd_pcm_hw_param_value_max(const struct snd_pcm_hw_params *params, |
| 176 | snd_pcm_hw_param_t var, int *dir) |
| 177 | { |
| 178 | if (hw_is_mask(var)) { |
| 179 | if (dir) |
| 180 | *dir = 0; |
| 181 | return snd_mask_max(hw_param_mask_c(params, var)); |
| 182 | } |
| 183 | if (hw_is_interval(var)) { |
| 184 | const struct snd_interval *i = hw_param_interval_c(params, var); |
| 185 | if (dir) |
| 186 | *dir = - (int) i->openmax; |
| 187 | return snd_interval_max(i); |
| 188 | } |
| 189 | return -EINVAL; |
| 190 | } |
| 191 | |
| 192 | static int _snd_pcm_hw_param_mask(struct snd_pcm_hw_params *params, |
| 193 | snd_pcm_hw_param_t var, |
| 194 | const struct snd_mask *val) |
| 195 | { |
| 196 | int changed; |
| 197 | changed = snd_mask_refine(hw_param_mask(params, var), val); |
| 198 | if (changed) { |
| 199 | params->cmask |= 1 << var; |
| 200 | params->rmask |= 1 << var; |
| 201 | } |
| 202 | return changed; |
| 203 | } |
| 204 | |
| 205 | static int snd_pcm_hw_param_mask(struct snd_pcm_substream *pcm, |
| 206 | struct snd_pcm_hw_params *params, |
| 207 | snd_pcm_hw_param_t var, |
| 208 | const struct snd_mask *val) |
| 209 | { |
| 210 | int changed = _snd_pcm_hw_param_mask(params, var, val); |
| 211 | if (changed < 0) |
| 212 | return changed; |
| 213 | if (params->rmask) { |
| 214 | int err = snd_pcm_hw_refine(pcm, params); |
| 215 | if (err < 0) |
| 216 | return err; |
| 217 | } |
| 218 | return 0; |
| 219 | } |
| 220 | |
| 221 | static int _snd_pcm_hw_param_min(struct snd_pcm_hw_params *params, |
| 222 | snd_pcm_hw_param_t var, unsigned int val, |
| 223 | int dir) |
| 224 | { |
| 225 | int changed; |
| 226 | int open = 0; |
| 227 | if (dir) { |
| 228 | if (dir > 0) { |
| 229 | open = 1; |
| 230 | } else if (dir < 0) { |
| 231 | if (val > 0) { |
| 232 | open = 1; |
| 233 | val--; |
| 234 | } |
| 235 | } |
| 236 | } |
| 237 | if (hw_is_mask(var)) |
| 238 | changed = snd_mask_refine_min(hw_param_mask(params, var), |
| 239 | val + !!open); |
| 240 | else if (hw_is_interval(var)) |
| 241 | changed = snd_interval_refine_min(hw_param_interval(params, var), |
| 242 | val, open); |
| 243 | else |
| 244 | return -EINVAL; |
| 245 | if (changed) { |
| 246 | params->cmask |= 1 << var; |
| 247 | params->rmask |= 1 << var; |
| 248 | } |
| 249 | return changed; |
| 250 | } |
| 251 | |
| 252 | /** |
| 253 | * snd_pcm_hw_param_min |
| 254 | * @pcm: PCM instance |
| 255 | * @params: the hw_params instance |
| 256 | * @var: parameter to retrieve |
| 257 | * @val: minimal value |
| 258 | * @dir: pointer to the direction (-1,0,1) or NULL |
| 259 | * |
| 260 | * Inside configuration space defined by PARAMS remove from PAR all |
| 261 | * values < VAL. Reduce configuration space accordingly. |
| 262 | * Return new minimum or -EINVAL if the configuration space is empty |
| 263 | */ |
| 264 | static int snd_pcm_hw_param_min(struct snd_pcm_substream *pcm, |
| 265 | struct snd_pcm_hw_params *params, |
| 266 | snd_pcm_hw_param_t var, unsigned int val, |
| 267 | int *dir) |
| 268 | { |
| 269 | int changed = _snd_pcm_hw_param_min(params, var, val, dir ? *dir : 0); |
| 270 | if (changed < 0) |
| 271 | return changed; |
| 272 | if (params->rmask) { |
| 273 | int err = snd_pcm_hw_refine(pcm, params); |
| 274 | if (err < 0) |
| 275 | return err; |
| 276 | } |
| 277 | return snd_pcm_hw_param_value_min(params, var, dir); |
| 278 | } |
| 279 | |
| 280 | static int _snd_pcm_hw_param_max(struct snd_pcm_hw_params *params, |
| 281 | snd_pcm_hw_param_t var, unsigned int val, |
| 282 | int dir) |
| 283 | { |
| 284 | int changed; |
| 285 | int open = 0; |
| 286 | if (dir) { |
| 287 | if (dir < 0) { |
| 288 | open = 1; |
| 289 | } else if (dir > 0) { |
| 290 | open = 1; |
| 291 | val++; |
| 292 | } |
| 293 | } |
| 294 | if (hw_is_mask(var)) { |
| 295 | if (val == 0 && open) { |
| 296 | snd_mask_none(hw_param_mask(params, var)); |
| 297 | changed = -EINVAL; |
| 298 | } else |
| 299 | changed = snd_mask_refine_max(hw_param_mask(params, var), |
| 300 | val - !!open); |
| 301 | } else if (hw_is_interval(var)) |
| 302 | changed = snd_interval_refine_max(hw_param_interval(params, var), |
| 303 | val, open); |
| 304 | else |
| 305 | return -EINVAL; |
| 306 | if (changed) { |
| 307 | params->cmask |= 1 << var; |
| 308 | params->rmask |= 1 << var; |
| 309 | } |
| 310 | return changed; |
| 311 | } |
| 312 | |
| 313 | /** |
| 314 | * snd_pcm_hw_param_max |
| 315 | * @pcm: PCM instance |
| 316 | * @params: the hw_params instance |
| 317 | * @var: parameter to retrieve |
| 318 | * @val: maximal value |
| 319 | * @dir: pointer to the direction (-1,0,1) or NULL |
| 320 | * |
| 321 | * Inside configuration space defined by PARAMS remove from PAR all |
| 322 | * values >= VAL + 1. Reduce configuration space accordingly. |
| 323 | * Return new maximum or -EINVAL if the configuration space is empty |
| 324 | */ |
| 325 | static int snd_pcm_hw_param_max(struct snd_pcm_substream *pcm, |
| 326 | struct snd_pcm_hw_params *params, |
| 327 | snd_pcm_hw_param_t var, unsigned int val, |
| 328 | int *dir) |
| 329 | { |
| 330 | int changed = _snd_pcm_hw_param_max(params, var, val, dir ? *dir : 0); |
| 331 | if (changed < 0) |
| 332 | return changed; |
| 333 | if (params->rmask) { |
| 334 | int err = snd_pcm_hw_refine(pcm, params); |
| 335 | if (err < 0) |
| 336 | return err; |
| 337 | } |
| 338 | return snd_pcm_hw_param_value_max(params, var, dir); |
| 339 | } |
| 340 | |
| 341 | static int boundary_sub(int a, int adir, |
| 342 | int b, int bdir, |
| 343 | int *c, int *cdir) |
| 344 | { |
| 345 | adir = adir < 0 ? -1 : (adir > 0 ? 1 : 0); |
| 346 | bdir = bdir < 0 ? -1 : (bdir > 0 ? 1 : 0); |
| 347 | *c = a - b; |
| 348 | *cdir = adir - bdir; |
| 349 | if (*cdir == -2) { |
| 350 | (*c)--; |
| 351 | } else if (*cdir == 2) { |
| 352 | (*c)++; |
| 353 | } |
| 354 | return 0; |
| 355 | } |
| 356 | |
| 357 | static int boundary_lt(unsigned int a, int adir, |
| 358 | unsigned int b, int bdir) |
| 359 | { |
| 360 | if (adir < 0) { |
| 361 | a--; |
| 362 | adir = 1; |
| 363 | } else if (adir > 0) |
| 364 | adir = 1; |
| 365 | if (bdir < 0) { |
| 366 | b--; |
| 367 | bdir = 1; |
| 368 | } else if (bdir > 0) |
| 369 | bdir = 1; |
| 370 | return a < b || (a == b && adir < bdir); |
| 371 | } |
| 372 | |
| 373 | /* Return 1 if min is nearer to best than max */ |
| 374 | static int boundary_nearer(int min, int mindir, |
| 375 | int best, int bestdir, |
| 376 | int max, int maxdir) |
| 377 | { |
| 378 | int dmin, dmindir; |
| 379 | int dmax, dmaxdir; |
| 380 | boundary_sub(best, bestdir, min, mindir, &dmin, &dmindir); |
| 381 | boundary_sub(max, maxdir, best, bestdir, &dmax, &dmaxdir); |
| 382 | return boundary_lt(dmin, dmindir, dmax, dmaxdir); |
| 383 | } |
| 384 | |
| 385 | /** |
| 386 | * snd_pcm_hw_param_near |
| 387 | * @pcm: PCM instance |
| 388 | * @params: the hw_params instance |
| 389 | * @var: parameter to retrieve |
| 390 | * @best: value to set |
| 391 | * @dir: pointer to the direction (-1,0,1) or NULL |
| 392 | * |
| 393 | * Inside configuration space defined by PARAMS set PAR to the available value |
| 394 | * nearest to VAL. Reduce configuration space accordingly. |
| 395 | * This function cannot be called for SNDRV_PCM_HW_PARAM_ACCESS, |
| 396 | * SNDRV_PCM_HW_PARAM_FORMAT, SNDRV_PCM_HW_PARAM_SUBFORMAT. |
| 397 | * Return the value found. |
| 398 | */ |
| 399 | static int snd_pcm_hw_param_near(struct snd_pcm_substream *pcm, |
| 400 | struct snd_pcm_hw_params *params, |
| 401 | snd_pcm_hw_param_t var, unsigned int best, |
| 402 | int *dir) |
| 403 | { |
| 404 | struct snd_pcm_hw_params *save = NULL; |
| 405 | int v; |
| 406 | unsigned int saved_min; |
| 407 | int last = 0; |
| 408 | int min, max; |
| 409 | int mindir, maxdir; |
| 410 | int valdir = dir ? *dir : 0; |
| 411 | /* FIXME */ |
| 412 | if (best > INT_MAX) |
| 413 | best = INT_MAX; |
| 414 | min = max = best; |
| 415 | mindir = maxdir = valdir; |
| 416 | if (maxdir > 0) |
| 417 | maxdir = 0; |
| 418 | else if (maxdir == 0) |
| 419 | maxdir = -1; |
| 420 | else { |
| 421 | maxdir = 1; |
| 422 | max--; |
| 423 | } |
| 424 | save = kmalloc(sizeof(*save), GFP_KERNEL); |
| 425 | if (save == NULL) |
| 426 | return -ENOMEM; |
| 427 | *save = *params; |
| 428 | saved_min = min; |
| 429 | min = snd_pcm_hw_param_min(pcm, params, var, min, &mindir); |
| 430 | if (min >= 0) { |
| 431 | struct snd_pcm_hw_params *params1; |
| 432 | if (max < 0) |
| 433 | goto _end; |
| 434 | if ((unsigned int)min == saved_min && mindir == valdir) |
| 435 | goto _end; |
| 436 | params1 = kmalloc(sizeof(*params1), GFP_KERNEL); |
| 437 | if (params1 == NULL) { |
| 438 | kfree(save); |
| 439 | return -ENOMEM; |
| 440 | } |
| 441 | *params1 = *save; |
| 442 | max = snd_pcm_hw_param_max(pcm, params1, var, max, &maxdir); |
| 443 | if (max < 0) { |
| 444 | kfree(params1); |
| 445 | goto _end; |
| 446 | } |
| 447 | if (boundary_nearer(max, maxdir, best, valdir, min, mindir)) { |
| 448 | *params = *params1; |
| 449 | last = 1; |
| 450 | } |
| 451 | kfree(params1); |
| 452 | } else { |
| 453 | *params = *save; |
| 454 | max = snd_pcm_hw_param_max(pcm, params, var, max, &maxdir); |
Takashi Iwai | 7eaa943 | 2008-08-08 17:09:09 +0200 | [diff] [blame] | 455 | if (max < 0) |
| 456 | return max; |
Takashi Iwai | e88e8ae6 | 2006-04-28 15:13:40 +0200 | [diff] [blame] | 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); |
Takashi Iwai | 7eaa943 | 2008-08-08 17:09:09 +0200 | [diff] [blame] | 465 | snd_BUG_ON(v < 0); |
Takashi Iwai | e88e8ae6 | 2006-04-28 15:13:40 +0200 | [diff] [blame] | 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 | |
Takashi Iwai | 24038a2 | 2007-08-08 17:00:32 +0200 | [diff] [blame] | 636 | /* define extended formats in the recent OSS versions (if any) */ |
| 637 | /* linear formats */ |
| 638 | #define AFMT_S32_LE 0x00001000 |
| 639 | #define AFMT_S32_BE 0x00002000 |
| 640 | #define AFMT_S24_LE 0x00008000 |
| 641 | #define AFMT_S24_BE 0x00010000 |
| 642 | #define AFMT_S24_PACKED 0x00040000 |
| 643 | |
| 644 | /* other supported formats */ |
| 645 | #define AFMT_FLOAT 0x00004000 |
| 646 | #define AFMT_SPDIF_RAW 0x00020000 |
| 647 | |
| 648 | /* unsupported formats */ |
| 649 | #define AFMT_AC3 0x00000400 |
| 650 | #define AFMT_VORBIS 0x00000800 |
| 651 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 652 | static int snd_pcm_oss_format_from(int format) |
| 653 | { |
| 654 | switch (format) { |
| 655 | case AFMT_MU_LAW: return SNDRV_PCM_FORMAT_MU_LAW; |
| 656 | case AFMT_A_LAW: return SNDRV_PCM_FORMAT_A_LAW; |
| 657 | case AFMT_IMA_ADPCM: return SNDRV_PCM_FORMAT_IMA_ADPCM; |
| 658 | case AFMT_U8: return SNDRV_PCM_FORMAT_U8; |
| 659 | case AFMT_S16_LE: return SNDRV_PCM_FORMAT_S16_LE; |
| 660 | case AFMT_S16_BE: return SNDRV_PCM_FORMAT_S16_BE; |
| 661 | case AFMT_S8: return SNDRV_PCM_FORMAT_S8; |
| 662 | case AFMT_U16_LE: return SNDRV_PCM_FORMAT_U16_LE; |
| 663 | case AFMT_U16_BE: return SNDRV_PCM_FORMAT_U16_BE; |
| 664 | case AFMT_MPEG: return SNDRV_PCM_FORMAT_MPEG; |
Takashi Iwai | 24038a2 | 2007-08-08 17:00:32 +0200 | [diff] [blame] | 665 | case AFMT_S32_LE: return SNDRV_PCM_FORMAT_S32_LE; |
| 666 | case AFMT_S32_BE: return SNDRV_PCM_FORMAT_S32_BE; |
| 667 | case AFMT_S24_LE: return SNDRV_PCM_FORMAT_S24_LE; |
| 668 | case AFMT_S24_BE: return SNDRV_PCM_FORMAT_S24_BE; |
| 669 | case AFMT_S24_PACKED: return SNDRV_PCM_FORMAT_S24_3LE; |
| 670 | case AFMT_FLOAT: return SNDRV_PCM_FORMAT_FLOAT; |
| 671 | case AFMT_SPDIF_RAW: return SNDRV_PCM_FORMAT_IEC958_SUBFRAME; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 672 | default: return SNDRV_PCM_FORMAT_U8; |
| 673 | } |
| 674 | } |
| 675 | |
| 676 | static int snd_pcm_oss_format_to(int format) |
| 677 | { |
| 678 | switch (format) { |
| 679 | case SNDRV_PCM_FORMAT_MU_LAW: return AFMT_MU_LAW; |
| 680 | case SNDRV_PCM_FORMAT_A_LAW: return AFMT_A_LAW; |
| 681 | case SNDRV_PCM_FORMAT_IMA_ADPCM: return AFMT_IMA_ADPCM; |
| 682 | case SNDRV_PCM_FORMAT_U8: return AFMT_U8; |
| 683 | case SNDRV_PCM_FORMAT_S16_LE: return AFMT_S16_LE; |
| 684 | case SNDRV_PCM_FORMAT_S16_BE: return AFMT_S16_BE; |
| 685 | case SNDRV_PCM_FORMAT_S8: return AFMT_S8; |
| 686 | case SNDRV_PCM_FORMAT_U16_LE: return AFMT_U16_LE; |
| 687 | case SNDRV_PCM_FORMAT_U16_BE: return AFMT_U16_BE; |
| 688 | case SNDRV_PCM_FORMAT_MPEG: return AFMT_MPEG; |
Takashi Iwai | 24038a2 | 2007-08-08 17:00:32 +0200 | [diff] [blame] | 689 | case SNDRV_PCM_FORMAT_S32_LE: return AFMT_S32_LE; |
| 690 | case SNDRV_PCM_FORMAT_S32_BE: return AFMT_S32_BE; |
| 691 | case SNDRV_PCM_FORMAT_S24_LE: return AFMT_S24_LE; |
| 692 | case SNDRV_PCM_FORMAT_S24_BE: return AFMT_S24_BE; |
| 693 | case SNDRV_PCM_FORMAT_S24_3LE: return AFMT_S24_PACKED; |
| 694 | case SNDRV_PCM_FORMAT_FLOAT: return AFMT_FLOAT; |
| 695 | case SNDRV_PCM_FORMAT_IEC958_SUBFRAME: return AFMT_SPDIF_RAW; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 696 | default: return -EINVAL; |
| 697 | } |
| 698 | } |
| 699 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 700 | static int snd_pcm_oss_period_size(struct snd_pcm_substream *substream, |
| 701 | struct snd_pcm_hw_params *oss_params, |
| 702 | struct snd_pcm_hw_params *slave_params) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 703 | { |
| 704 | size_t s; |
| 705 | size_t oss_buffer_size, oss_period_size, oss_periods; |
| 706 | size_t min_period_size, max_period_size; |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 707 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 708 | size_t oss_frame_size; |
| 709 | |
| 710 | oss_frame_size = snd_pcm_format_physical_width(params_format(oss_params)) * |
| 711 | params_channels(oss_params) / 8; |
| 712 | |
| 713 | oss_buffer_size = snd_pcm_plug_client_size(substream, |
| 714 | snd_pcm_hw_param_value_max(slave_params, SNDRV_PCM_HW_PARAM_BUFFER_SIZE, NULL)) * oss_frame_size; |
| 715 | oss_buffer_size = 1 << ld2(oss_buffer_size); |
Takashi Iwai | 9c323fc | 2006-04-28 15:13:41 +0200 | [diff] [blame] | 716 | if (atomic_read(&substream->mmap_count)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 717 | if (oss_buffer_size > runtime->oss.mmap_bytes) |
| 718 | oss_buffer_size = runtime->oss.mmap_bytes; |
| 719 | } |
| 720 | |
Takashi Iwai | 060d77b | 2006-03-27 16:44:52 +0200 | [diff] [blame] | 721 | if (substream->oss.setup.period_size > 16) |
| 722 | oss_period_size = substream->oss.setup.period_size; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 723 | else if (runtime->oss.fragshift) { |
| 724 | oss_period_size = 1 << runtime->oss.fragshift; |
| 725 | if (oss_period_size > oss_buffer_size / 2) |
| 726 | oss_period_size = oss_buffer_size / 2; |
| 727 | } else { |
| 728 | int sd; |
| 729 | size_t bytes_per_sec = params_rate(oss_params) * snd_pcm_format_physical_width(params_format(oss_params)) * params_channels(oss_params) / 8; |
| 730 | |
| 731 | oss_period_size = oss_buffer_size; |
| 732 | do { |
| 733 | oss_period_size /= 2; |
| 734 | } while (oss_period_size > bytes_per_sec); |
| 735 | if (runtime->oss.subdivision == 0) { |
| 736 | sd = 4; |
| 737 | if (oss_period_size / sd > 4096) |
| 738 | sd *= 2; |
| 739 | if (oss_period_size / sd < 4096) |
| 740 | sd = 1; |
| 741 | } else |
| 742 | sd = runtime->oss.subdivision; |
| 743 | oss_period_size /= sd; |
| 744 | if (oss_period_size < 16) |
| 745 | oss_period_size = 16; |
| 746 | } |
| 747 | |
| 748 | min_period_size = snd_pcm_plug_client_size(substream, |
| 749 | snd_pcm_hw_param_value_min(slave_params, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, NULL)); |
| 750 | min_period_size *= oss_frame_size; |
| 751 | min_period_size = 1 << (ld2(min_period_size - 1) + 1); |
| 752 | if (oss_period_size < min_period_size) |
| 753 | oss_period_size = min_period_size; |
| 754 | |
| 755 | max_period_size = snd_pcm_plug_client_size(substream, |
| 756 | snd_pcm_hw_param_value_max(slave_params, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, NULL)); |
| 757 | max_period_size *= oss_frame_size; |
| 758 | max_period_size = 1 << ld2(max_period_size); |
| 759 | if (oss_period_size > max_period_size) |
| 760 | oss_period_size = max_period_size; |
| 761 | |
| 762 | oss_periods = oss_buffer_size / oss_period_size; |
| 763 | |
Takashi Iwai | 060d77b | 2006-03-27 16:44:52 +0200 | [diff] [blame] | 764 | if (substream->oss.setup.periods > 1) |
| 765 | oss_periods = substream->oss.setup.periods; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 766 | |
| 767 | s = snd_pcm_hw_param_value_max(slave_params, SNDRV_PCM_HW_PARAM_PERIODS, NULL); |
| 768 | if (runtime->oss.maxfrags && s > runtime->oss.maxfrags) |
| 769 | s = runtime->oss.maxfrags; |
| 770 | if (oss_periods > s) |
| 771 | oss_periods = s; |
| 772 | |
| 773 | s = snd_pcm_hw_param_value_min(slave_params, SNDRV_PCM_HW_PARAM_PERIODS, NULL); |
| 774 | if (s < 2) |
| 775 | s = 2; |
| 776 | if (oss_periods < s) |
| 777 | oss_periods = s; |
| 778 | |
| 779 | while (oss_period_size * oss_periods > oss_buffer_size) |
| 780 | oss_period_size /= 2; |
| 781 | |
Takashi Iwai | 7eaa943 | 2008-08-08 17:09:09 +0200 | [diff] [blame] | 782 | if (oss_period_size < 16) |
| 783 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 784 | runtime->oss.period_bytes = oss_period_size; |
| 785 | runtime->oss.period_frames = 1; |
| 786 | runtime->oss.periods = oss_periods; |
| 787 | return 0; |
| 788 | } |
| 789 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 790 | static int choose_rate(struct snd_pcm_substream *substream, |
| 791 | struct snd_pcm_hw_params *params, unsigned int best_rate) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 792 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 793 | struct snd_interval *it; |
| 794 | struct snd_pcm_hw_params *save; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 795 | unsigned int rate, prev; |
| 796 | |
| 797 | save = kmalloc(sizeof(*save), GFP_KERNEL); |
| 798 | if (save == NULL) |
| 799 | return -ENOMEM; |
| 800 | *save = *params; |
| 801 | it = hw_param_interval(save, SNDRV_PCM_HW_PARAM_RATE); |
| 802 | |
| 803 | /* try multiples of the best rate */ |
| 804 | rate = best_rate; |
| 805 | for (;;) { |
| 806 | if (it->max < rate || (it->max == rate && it->openmax)) |
| 807 | break; |
| 808 | if (it->min < rate || (it->min == rate && !it->openmin)) { |
| 809 | int ret; |
| 810 | ret = snd_pcm_hw_param_set(substream, params, |
| 811 | SNDRV_PCM_HW_PARAM_RATE, |
| 812 | rate, 0); |
| 813 | if (ret == (int)rate) { |
| 814 | kfree(save); |
| 815 | return rate; |
| 816 | } |
| 817 | *params = *save; |
| 818 | } |
| 819 | prev = rate; |
| 820 | rate += best_rate; |
| 821 | if (rate <= prev) |
| 822 | break; |
| 823 | } |
| 824 | |
| 825 | /* not found, use the nearest rate */ |
| 826 | kfree(save); |
| 827 | return snd_pcm_hw_param_near(substream, params, SNDRV_PCM_HW_PARAM_RATE, best_rate, NULL); |
| 828 | } |
| 829 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 830 | static int snd_pcm_oss_change_params(struct snd_pcm_substream *substream) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 831 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 832 | struct snd_pcm_runtime *runtime = substream->runtime; |
| 833 | struct snd_pcm_hw_params *params, *sparams; |
| 834 | struct snd_pcm_sw_params *sw_params; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 835 | ssize_t oss_buffer_size, oss_period_size; |
| 836 | size_t oss_frame_size; |
| 837 | int err; |
| 838 | int direct; |
| 839 | int format, sformat, n; |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 840 | struct snd_mask sformat_mask; |
| 841 | struct snd_mask mask; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 842 | |
Takashi Iwai | e3a5d59 | 2006-11-14 13:03:19 +0100 | [diff] [blame] | 843 | if (mutex_lock_interruptible(&runtime->oss.params_lock)) |
| 844 | return -EINTR; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 845 | sw_params = kmalloc(sizeof(*sw_params), GFP_KERNEL); |
| 846 | params = kmalloc(sizeof(*params), GFP_KERNEL); |
| 847 | sparams = kmalloc(sizeof(*sparams), GFP_KERNEL); |
| 848 | if (!sw_params || !params || !sparams) { |
| 849 | snd_printd("No memory\n"); |
| 850 | err = -ENOMEM; |
| 851 | goto failure; |
| 852 | } |
| 853 | |
Takashi Iwai | 9c323fc | 2006-04-28 15:13:41 +0200 | [diff] [blame] | 854 | if (atomic_read(&substream->mmap_count)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 855 | direct = 1; |
Takashi Iwai | 060d77b | 2006-03-27 16:44:52 +0200 | [diff] [blame] | 856 | else |
| 857 | direct = substream->oss.setup.direct; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 858 | |
| 859 | _snd_pcm_hw_params_any(sparams); |
| 860 | _snd_pcm_hw_param_setinteger(sparams, SNDRV_PCM_HW_PARAM_PERIODS); |
| 861 | _snd_pcm_hw_param_min(sparams, SNDRV_PCM_HW_PARAM_PERIODS, 2, 0); |
| 862 | snd_mask_none(&mask); |
Takashi Iwai | 9c323fc | 2006-04-28 15:13:41 +0200 | [diff] [blame] | 863 | if (atomic_read(&substream->mmap_count)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 864 | snd_mask_set(&mask, SNDRV_PCM_ACCESS_MMAP_INTERLEAVED); |
| 865 | else { |
| 866 | snd_mask_set(&mask, SNDRV_PCM_ACCESS_RW_INTERLEAVED); |
| 867 | if (!direct) |
| 868 | snd_mask_set(&mask, SNDRV_PCM_ACCESS_RW_NONINTERLEAVED); |
| 869 | } |
| 870 | err = snd_pcm_hw_param_mask(substream, sparams, SNDRV_PCM_HW_PARAM_ACCESS, &mask); |
| 871 | if (err < 0) { |
| 872 | snd_printd("No usable accesses\n"); |
| 873 | err = -EINVAL; |
| 874 | goto failure; |
| 875 | } |
| 876 | choose_rate(substream, sparams, runtime->oss.rate); |
| 877 | snd_pcm_hw_param_near(substream, sparams, SNDRV_PCM_HW_PARAM_CHANNELS, runtime->oss.channels, NULL); |
| 878 | |
| 879 | format = snd_pcm_oss_format_from(runtime->oss.format); |
| 880 | |
| 881 | sformat_mask = *hw_param_mask(sparams, SNDRV_PCM_HW_PARAM_FORMAT); |
| 882 | if (direct) |
| 883 | sformat = format; |
| 884 | else |
| 885 | sformat = snd_pcm_plug_slave_format(format, &sformat_mask); |
| 886 | |
| 887 | if (sformat < 0 || !snd_mask_test(&sformat_mask, sformat)) { |
| 888 | for (sformat = 0; sformat <= SNDRV_PCM_FORMAT_LAST; sformat++) { |
| 889 | if (snd_mask_test(&sformat_mask, sformat) && |
| 890 | snd_pcm_oss_format_to(sformat) >= 0) |
| 891 | break; |
| 892 | } |
| 893 | if (sformat > SNDRV_PCM_FORMAT_LAST) { |
| 894 | snd_printd("Cannot find a format!!!\n"); |
| 895 | err = -EINVAL; |
| 896 | goto failure; |
| 897 | } |
| 898 | } |
| 899 | err = _snd_pcm_hw_param_set(sparams, SNDRV_PCM_HW_PARAM_FORMAT, sformat, 0); |
Takashi Iwai | 7eaa943 | 2008-08-08 17:09:09 +0200 | [diff] [blame] | 900 | if (err < 0) |
| 901 | goto failure; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 902 | |
| 903 | if (direct) { |
| 904 | memcpy(params, sparams, sizeof(*params)); |
| 905 | } else { |
| 906 | _snd_pcm_hw_params_any(params); |
| 907 | _snd_pcm_hw_param_set(params, SNDRV_PCM_HW_PARAM_ACCESS, |
| 908 | SNDRV_PCM_ACCESS_RW_INTERLEAVED, 0); |
| 909 | _snd_pcm_hw_param_set(params, SNDRV_PCM_HW_PARAM_FORMAT, |
| 910 | snd_pcm_oss_format_from(runtime->oss.format), 0); |
| 911 | _snd_pcm_hw_param_set(params, SNDRV_PCM_HW_PARAM_CHANNELS, |
| 912 | runtime->oss.channels, 0); |
| 913 | _snd_pcm_hw_param_set(params, SNDRV_PCM_HW_PARAM_RATE, |
| 914 | runtime->oss.rate, 0); |
| 915 | pdprintf("client: access = %i, format = %i, channels = %i, rate = %i\n", |
| 916 | params_access(params), params_format(params), |
| 917 | params_channels(params), params_rate(params)); |
| 918 | } |
| 919 | pdprintf("slave: access = %i, format = %i, channels = %i, rate = %i\n", |
| 920 | params_access(sparams), params_format(sparams), |
| 921 | params_channels(sparams), params_rate(sparams)); |
| 922 | |
| 923 | oss_frame_size = snd_pcm_format_physical_width(params_format(params)) * |
| 924 | params_channels(params) / 8; |
| 925 | |
Jaroslav Kysela | 21a3479 | 2006-01-13 09:12:11 +0100 | [diff] [blame] | 926 | #ifdef CONFIG_SND_PCM_OSS_PLUGINS |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 927 | snd_pcm_oss_plugin_clear(substream); |
| 928 | if (!direct) { |
| 929 | /* add necessary plugins */ |
| 930 | snd_pcm_oss_plugin_clear(substream); |
| 931 | if ((err = snd_pcm_plug_format_plugins(substream, |
| 932 | params, |
| 933 | sparams)) < 0) { |
| 934 | snd_printd("snd_pcm_plug_format_plugins failed: %i\n", err); |
| 935 | snd_pcm_oss_plugin_clear(substream); |
| 936 | goto failure; |
| 937 | } |
| 938 | if (runtime->oss.plugin_first) { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 939 | struct snd_pcm_plugin *plugin; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 940 | if ((err = snd_pcm_plugin_build_io(substream, sparams, &plugin)) < 0) { |
| 941 | snd_printd("snd_pcm_plugin_build_io failed: %i\n", err); |
| 942 | snd_pcm_oss_plugin_clear(substream); |
| 943 | goto failure; |
| 944 | } |
| 945 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { |
| 946 | err = snd_pcm_plugin_append(plugin); |
| 947 | } else { |
| 948 | err = snd_pcm_plugin_insert(plugin); |
| 949 | } |
| 950 | if (err < 0) { |
| 951 | snd_pcm_oss_plugin_clear(substream); |
| 952 | goto failure; |
| 953 | } |
| 954 | } |
| 955 | } |
Jaroslav Kysela | 21a3479 | 2006-01-13 09:12:11 +0100 | [diff] [blame] | 956 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 957 | |
| 958 | err = snd_pcm_oss_period_size(substream, params, sparams); |
| 959 | if (err < 0) |
| 960 | goto failure; |
| 961 | |
| 962 | n = snd_pcm_plug_slave_size(substream, runtime->oss.period_bytes / oss_frame_size); |
| 963 | err = snd_pcm_hw_param_near(substream, sparams, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, n, NULL); |
Takashi Iwai | 7eaa943 | 2008-08-08 17:09:09 +0200 | [diff] [blame] | 964 | if (err < 0) |
| 965 | goto failure; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 966 | |
| 967 | err = snd_pcm_hw_param_near(substream, sparams, SNDRV_PCM_HW_PARAM_PERIODS, |
| 968 | runtime->oss.periods, NULL); |
Takashi Iwai | 7eaa943 | 2008-08-08 17:09:09 +0200 | [diff] [blame] | 969 | if (err < 0) |
| 970 | goto failure; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 971 | |
| 972 | snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DROP, NULL); |
| 973 | |
| 974 | if ((err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_HW_PARAMS, sparams)) < 0) { |
| 975 | snd_printd("HW_PARAMS failed: %i\n", err); |
| 976 | goto failure; |
| 977 | } |
| 978 | |
| 979 | memset(sw_params, 0, sizeof(*sw_params)); |
| 980 | if (runtime->oss.trigger) { |
| 981 | sw_params->start_threshold = 1; |
| 982 | } else { |
| 983 | sw_params->start_threshold = runtime->boundary; |
| 984 | } |
Takashi Iwai | 9c323fc | 2006-04-28 15:13:41 +0200 | [diff] [blame] | 985 | if (atomic_read(&substream->mmap_count) || |
| 986 | substream->stream == SNDRV_PCM_STREAM_CAPTURE) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 987 | sw_params->stop_threshold = runtime->boundary; |
| 988 | else |
| 989 | sw_params->stop_threshold = runtime->buffer_size; |
| 990 | sw_params->tstamp_mode = SNDRV_PCM_TSTAMP_NONE; |
| 991 | sw_params->period_step = 1; |
Takashi Iwai | 004e653 | 2005-04-12 17:33:59 +0200 | [diff] [blame] | 992 | sw_params->avail_min = substream->stream == SNDRV_PCM_STREAM_PLAYBACK ? |
| 993 | 1 : runtime->period_size; |
Takashi Iwai | 9c323fc | 2006-04-28 15:13:41 +0200 | [diff] [blame] | 994 | if (atomic_read(&substream->mmap_count) || |
Takashi Iwai | 060d77b | 2006-03-27 16:44:52 +0200 | [diff] [blame] | 995 | substream->oss.setup.nosilence) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 996 | sw_params->silence_threshold = 0; |
| 997 | sw_params->silence_size = 0; |
| 998 | } else { |
| 999 | snd_pcm_uframes_t frames; |
| 1000 | frames = runtime->period_size + 16; |
| 1001 | if (frames > runtime->buffer_size) |
| 1002 | frames = runtime->buffer_size; |
| 1003 | sw_params->silence_threshold = frames; |
| 1004 | sw_params->silence_size = frames; |
| 1005 | } |
| 1006 | |
| 1007 | if ((err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_SW_PARAMS, sw_params)) < 0) { |
| 1008 | snd_printd("SW_PARAMS failed: %i\n", err); |
| 1009 | goto failure; |
| 1010 | } |
| 1011 | |
| 1012 | runtime->oss.periods = params_periods(sparams); |
| 1013 | oss_period_size = snd_pcm_plug_client_size(substream, params_period_size(sparams)); |
Takashi Iwai | 7eaa943 | 2008-08-08 17:09:09 +0200 | [diff] [blame] | 1014 | if (oss_period_size < 0) { |
| 1015 | err = -EINVAL; |
| 1016 | goto failure; |
| 1017 | } |
Jaroslav Kysela | 21a3479 | 2006-01-13 09:12:11 +0100 | [diff] [blame] | 1018 | #ifdef CONFIG_SND_PCM_OSS_PLUGINS |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1019 | if (runtime->oss.plugin_first) { |
| 1020 | err = snd_pcm_plug_alloc(substream, oss_period_size); |
| 1021 | if (err < 0) |
| 1022 | goto failure; |
| 1023 | } |
Jaroslav Kysela | 21a3479 | 2006-01-13 09:12:11 +0100 | [diff] [blame] | 1024 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1025 | oss_period_size *= oss_frame_size; |
| 1026 | |
| 1027 | oss_buffer_size = oss_period_size * runtime->oss.periods; |
Takashi Iwai | 7eaa943 | 2008-08-08 17:09:09 +0200 | [diff] [blame] | 1028 | if (oss_buffer_size < 0) { |
| 1029 | err = -EINVAL; |
| 1030 | goto failure; |
| 1031 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1032 | |
| 1033 | runtime->oss.period_bytes = oss_period_size; |
| 1034 | runtime->oss.buffer_bytes = oss_buffer_size; |
| 1035 | |
| 1036 | pdprintf("oss: period bytes = %i, buffer bytes = %i\n", |
| 1037 | runtime->oss.period_bytes, |
| 1038 | runtime->oss.buffer_bytes); |
| 1039 | pdprintf("slave: period_size = %i, buffer_size = %i\n", |
| 1040 | params_period_size(sparams), |
| 1041 | params_buffer_size(sparams)); |
| 1042 | |
| 1043 | runtime->oss.format = snd_pcm_oss_format_to(params_format(params)); |
| 1044 | runtime->oss.channels = params_channels(params); |
| 1045 | runtime->oss.rate = params_rate(params); |
| 1046 | |
| 1047 | runtime->oss.params = 0; |
| 1048 | runtime->oss.prepare = 1; |
| 1049 | vfree(runtime->oss.buffer); |
| 1050 | runtime->oss.buffer = vmalloc(runtime->oss.period_bytes); |
| 1051 | runtime->oss.buffer_used = 0; |
| 1052 | if (runtime->dma_area) |
| 1053 | snd_pcm_format_set_silence(runtime->format, runtime->dma_area, bytes_to_samples(runtime, runtime->dma_bytes)); |
| 1054 | |
| 1055 | runtime->oss.period_frames = snd_pcm_alsa_frames(substream, oss_period_size); |
| 1056 | |
| 1057 | err = 0; |
| 1058 | failure: |
| 1059 | kfree(sw_params); |
| 1060 | kfree(params); |
| 1061 | kfree(sparams); |
Takashi Iwai | e3a5d59 | 2006-11-14 13:03:19 +0100 | [diff] [blame] | 1062 | mutex_unlock(&runtime->oss.params_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1063 | return err; |
| 1064 | } |
| 1065 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1066 | 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] | 1067 | { |
| 1068 | int idx, err; |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1069 | struct snd_pcm_substream *asubstream = NULL, *substream; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1070 | |
| 1071 | for (idx = 0; idx < 2; idx++) { |
| 1072 | substream = pcm_oss_file->streams[idx]; |
| 1073 | if (substream == NULL) |
| 1074 | continue; |
| 1075 | if (asubstream == NULL) |
| 1076 | asubstream = substream; |
| 1077 | if (substream->runtime->oss.params) { |
| 1078 | err = snd_pcm_oss_change_params(substream); |
| 1079 | if (err < 0) |
| 1080 | return err; |
| 1081 | } |
| 1082 | } |
Takashi Iwai | 7eaa943 | 2008-08-08 17:09:09 +0200 | [diff] [blame] | 1083 | if (!asubstream) |
| 1084 | return -EIO; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1085 | if (r_substream) |
| 1086 | *r_substream = asubstream; |
| 1087 | return 0; |
| 1088 | } |
| 1089 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1090 | static int snd_pcm_oss_prepare(struct snd_pcm_substream *substream) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1091 | { |
| 1092 | int err; |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1093 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1094 | |
| 1095 | err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_PREPARE, NULL); |
| 1096 | if (err < 0) { |
| 1097 | snd_printd("snd_pcm_oss_prepare: SNDRV_PCM_IOCTL_PREPARE failed\n"); |
| 1098 | return err; |
| 1099 | } |
| 1100 | runtime->oss.prepare = 0; |
| 1101 | runtime->oss.prev_hw_ptr_interrupt = 0; |
| 1102 | runtime->oss.period_ptr = 0; |
| 1103 | runtime->oss.buffer_used = 0; |
| 1104 | |
| 1105 | return 0; |
| 1106 | } |
| 1107 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1108 | static int snd_pcm_oss_make_ready(struct snd_pcm_substream *substream) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1109 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1110 | struct snd_pcm_runtime *runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1111 | int err; |
| 1112 | |
| 1113 | if (substream == NULL) |
| 1114 | return 0; |
| 1115 | runtime = substream->runtime; |
| 1116 | if (runtime->oss.params) { |
| 1117 | err = snd_pcm_oss_change_params(substream); |
| 1118 | if (err < 0) |
| 1119 | return err; |
| 1120 | } |
| 1121 | if (runtime->oss.prepare) { |
| 1122 | err = snd_pcm_oss_prepare(substream); |
| 1123 | if (err < 0) |
| 1124 | return err; |
| 1125 | } |
| 1126 | return 0; |
| 1127 | } |
| 1128 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1129 | 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] | 1130 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1131 | struct snd_pcm_runtime *runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1132 | snd_pcm_uframes_t frames; |
| 1133 | int err = 0; |
| 1134 | |
| 1135 | while (1) { |
| 1136 | err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DELAY, delay); |
| 1137 | if (err < 0) |
| 1138 | break; |
| 1139 | runtime = substream->runtime; |
| 1140 | if (*delay <= (snd_pcm_sframes_t)runtime->buffer_size) |
| 1141 | break; |
| 1142 | /* in case of overrun, skip whole periods like OSS/Linux driver does */ |
| 1143 | /* until avail(delay) <= buffer_size */ |
| 1144 | frames = (*delay - runtime->buffer_size) + runtime->period_size - 1; |
| 1145 | frames /= runtime->period_size; |
| 1146 | frames *= runtime->period_size; |
| 1147 | err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_FORWARD, &frames); |
| 1148 | if (err < 0) |
| 1149 | break; |
| 1150 | } |
| 1151 | return err; |
| 1152 | } |
| 1153 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1154 | 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] | 1155 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1156 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1157 | int ret; |
| 1158 | while (1) { |
| 1159 | if (runtime->status->state == SNDRV_PCM_STATE_XRUN || |
| 1160 | runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) { |
| 1161 | #ifdef OSS_DEBUG |
| 1162 | if (runtime->status->state == SNDRV_PCM_STATE_XRUN) |
| 1163 | printk("pcm_oss: write: recovering from XRUN\n"); |
| 1164 | else |
| 1165 | printk("pcm_oss: write: recovering from SUSPEND\n"); |
| 1166 | #endif |
| 1167 | ret = snd_pcm_oss_prepare(substream); |
| 1168 | if (ret < 0) |
| 1169 | break; |
| 1170 | } |
| 1171 | if (in_kernel) { |
| 1172 | mm_segment_t fs; |
| 1173 | fs = snd_enter_user(); |
| 1174 | ret = snd_pcm_lib_write(substream, (void __user *)ptr, frames); |
| 1175 | snd_leave_user(fs); |
| 1176 | } else { |
| 1177 | ret = snd_pcm_lib_write(substream, (void __user *)ptr, frames); |
| 1178 | } |
| 1179 | if (ret != -EPIPE && ret != -ESTRPIPE) |
| 1180 | break; |
| 1181 | /* test, if we can't store new data, because the stream */ |
| 1182 | /* has not been started */ |
| 1183 | if (runtime->status->state == SNDRV_PCM_STATE_PREPARED) |
| 1184 | return -EAGAIN; |
| 1185 | } |
| 1186 | return ret; |
| 1187 | } |
| 1188 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1189 | 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] | 1190 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1191 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1192 | snd_pcm_sframes_t delay; |
| 1193 | int ret; |
| 1194 | while (1) { |
| 1195 | if (runtime->status->state == SNDRV_PCM_STATE_XRUN || |
| 1196 | runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) { |
| 1197 | #ifdef OSS_DEBUG |
| 1198 | if (runtime->status->state == SNDRV_PCM_STATE_XRUN) |
| 1199 | printk("pcm_oss: read: recovering from XRUN\n"); |
| 1200 | else |
| 1201 | printk("pcm_oss: read: recovering from SUSPEND\n"); |
| 1202 | #endif |
| 1203 | ret = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DRAIN, NULL); |
| 1204 | if (ret < 0) |
| 1205 | break; |
| 1206 | } else if (runtime->status->state == SNDRV_PCM_STATE_SETUP) { |
| 1207 | ret = snd_pcm_oss_prepare(substream); |
| 1208 | if (ret < 0) |
| 1209 | break; |
| 1210 | } |
| 1211 | ret = snd_pcm_oss_capture_position_fixup(substream, &delay); |
| 1212 | if (ret < 0) |
| 1213 | break; |
| 1214 | if (in_kernel) { |
| 1215 | mm_segment_t fs; |
| 1216 | fs = snd_enter_user(); |
| 1217 | ret = snd_pcm_lib_read(substream, (void __user *)ptr, frames); |
| 1218 | snd_leave_user(fs); |
| 1219 | } else { |
| 1220 | ret = snd_pcm_lib_read(substream, (void __user *)ptr, frames); |
| 1221 | } |
| 1222 | if (ret == -EPIPE) { |
| 1223 | if (runtime->status->state == SNDRV_PCM_STATE_DRAINING) { |
| 1224 | ret = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DROP, NULL); |
| 1225 | if (ret < 0) |
| 1226 | break; |
| 1227 | } |
| 1228 | continue; |
| 1229 | } |
| 1230 | if (ret != -ESTRPIPE) |
| 1231 | break; |
| 1232 | } |
| 1233 | return ret; |
| 1234 | } |
| 1235 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1236 | 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] | 1237 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1238 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1239 | int ret; |
| 1240 | while (1) { |
| 1241 | if (runtime->status->state == SNDRV_PCM_STATE_XRUN || |
| 1242 | runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) { |
| 1243 | #ifdef OSS_DEBUG |
| 1244 | if (runtime->status->state == SNDRV_PCM_STATE_XRUN) |
| 1245 | printk("pcm_oss: writev: recovering from XRUN\n"); |
| 1246 | else |
| 1247 | printk("pcm_oss: writev: recovering from SUSPEND\n"); |
| 1248 | #endif |
| 1249 | ret = snd_pcm_oss_prepare(substream); |
| 1250 | if (ret < 0) |
| 1251 | break; |
| 1252 | } |
| 1253 | if (in_kernel) { |
| 1254 | mm_segment_t fs; |
| 1255 | fs = snd_enter_user(); |
| 1256 | ret = snd_pcm_lib_writev(substream, (void __user **)bufs, frames); |
| 1257 | snd_leave_user(fs); |
| 1258 | } else { |
| 1259 | ret = snd_pcm_lib_writev(substream, (void __user **)bufs, frames); |
| 1260 | } |
| 1261 | if (ret != -EPIPE && ret != -ESTRPIPE) |
| 1262 | break; |
| 1263 | |
| 1264 | /* test, if we can't store new data, because the stream */ |
| 1265 | /* has not been started */ |
| 1266 | if (runtime->status->state == SNDRV_PCM_STATE_PREPARED) |
| 1267 | return -EAGAIN; |
| 1268 | } |
| 1269 | return ret; |
| 1270 | } |
| 1271 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1272 | 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] | 1273 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1274 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1275 | int ret; |
| 1276 | while (1) { |
| 1277 | if (runtime->status->state == SNDRV_PCM_STATE_XRUN || |
| 1278 | runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) { |
| 1279 | #ifdef OSS_DEBUG |
| 1280 | if (runtime->status->state == SNDRV_PCM_STATE_XRUN) |
| 1281 | printk("pcm_oss: readv: recovering from XRUN\n"); |
| 1282 | else |
| 1283 | printk("pcm_oss: readv: recovering from SUSPEND\n"); |
| 1284 | #endif |
| 1285 | ret = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DRAIN, NULL); |
| 1286 | if (ret < 0) |
| 1287 | break; |
| 1288 | } else if (runtime->status->state == SNDRV_PCM_STATE_SETUP) { |
| 1289 | ret = snd_pcm_oss_prepare(substream); |
| 1290 | if (ret < 0) |
| 1291 | break; |
| 1292 | } |
| 1293 | if (in_kernel) { |
| 1294 | mm_segment_t fs; |
| 1295 | fs = snd_enter_user(); |
| 1296 | ret = snd_pcm_lib_readv(substream, (void __user **)bufs, frames); |
| 1297 | snd_leave_user(fs); |
| 1298 | } else { |
| 1299 | ret = snd_pcm_lib_readv(substream, (void __user **)bufs, frames); |
| 1300 | } |
| 1301 | if (ret != -EPIPE && ret != -ESTRPIPE) |
| 1302 | break; |
| 1303 | } |
| 1304 | return ret; |
| 1305 | } |
| 1306 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1307 | 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] | 1308 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1309 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1310 | snd_pcm_sframes_t frames, frames1; |
Jaroslav Kysela | 21a3479 | 2006-01-13 09:12:11 +0100 | [diff] [blame] | 1311 | #ifdef CONFIG_SND_PCM_OSS_PLUGINS |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1312 | if (runtime->oss.plugin_first) { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1313 | struct snd_pcm_plugin_channel *channels; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1314 | size_t oss_frame_bytes = (runtime->oss.plugin_first->src_width * runtime->oss.plugin_first->src_format.channels) / 8; |
| 1315 | if (!in_kernel) { |
| 1316 | if (copy_from_user(runtime->oss.buffer, (const char __user *)buf, bytes)) |
| 1317 | return -EFAULT; |
| 1318 | buf = runtime->oss.buffer; |
| 1319 | } |
| 1320 | frames = bytes / oss_frame_bytes; |
| 1321 | frames1 = snd_pcm_plug_client_channels_buf(substream, (char *)buf, frames, &channels); |
| 1322 | if (frames1 < 0) |
| 1323 | return frames1; |
| 1324 | frames1 = snd_pcm_plug_write_transfer(substream, channels, frames1); |
| 1325 | if (frames1 <= 0) |
| 1326 | return frames1; |
| 1327 | bytes = frames1 * oss_frame_bytes; |
Jaroslav Kysela | 21a3479 | 2006-01-13 09:12:11 +0100 | [diff] [blame] | 1328 | } else |
| 1329 | #endif |
| 1330 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1331 | frames = bytes_to_frames(runtime, bytes); |
| 1332 | frames1 = snd_pcm_oss_write3(substream, buf, frames, in_kernel); |
| 1333 | if (frames1 <= 0) |
| 1334 | return frames1; |
| 1335 | bytes = frames_to_bytes(runtime, frames1); |
| 1336 | } |
| 1337 | return bytes; |
| 1338 | } |
| 1339 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1340 | 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] | 1341 | { |
| 1342 | size_t xfer = 0; |
| 1343 | ssize_t tmp; |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1344 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1345 | |
Takashi Iwai | 9c323fc | 2006-04-28 15:13:41 +0200 | [diff] [blame] | 1346 | if (atomic_read(&substream->mmap_count)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1347 | return -ENXIO; |
| 1348 | |
| 1349 | if ((tmp = snd_pcm_oss_make_ready(substream)) < 0) |
| 1350 | return tmp; |
Takashi Iwai | e3a5d59 | 2006-11-14 13:03:19 +0100 | [diff] [blame] | 1351 | mutex_lock(&runtime->oss.params_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1352 | while (bytes > 0) { |
| 1353 | if (bytes < runtime->oss.period_bytes || runtime->oss.buffer_used > 0) { |
| 1354 | tmp = bytes; |
| 1355 | if (tmp + runtime->oss.buffer_used > runtime->oss.period_bytes) |
| 1356 | tmp = runtime->oss.period_bytes - runtime->oss.buffer_used; |
| 1357 | if (tmp > 0) { |
Takashi Iwai | e3a5d59 | 2006-11-14 13:03:19 +0100 | [diff] [blame] | 1358 | if (copy_from_user(runtime->oss.buffer + runtime->oss.buffer_used, buf, tmp)) { |
| 1359 | tmp = -EFAULT; |
| 1360 | goto err; |
| 1361 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1362 | } |
| 1363 | runtime->oss.buffer_used += tmp; |
| 1364 | buf += tmp; |
| 1365 | bytes -= tmp; |
| 1366 | xfer += tmp; |
Takashi Iwai | 060d77b | 2006-03-27 16:44:52 +0200 | [diff] [blame] | 1367 | if (substream->oss.setup.partialfrag || |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1368 | runtime->oss.buffer_used == runtime->oss.period_bytes) { |
| 1369 | tmp = snd_pcm_oss_write2(substream, runtime->oss.buffer + runtime->oss.period_ptr, |
| 1370 | runtime->oss.buffer_used - runtime->oss.period_ptr, 1); |
| 1371 | if (tmp <= 0) |
Takashi Iwai | e3a5d59 | 2006-11-14 13:03:19 +0100 | [diff] [blame] | 1372 | goto err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1373 | runtime->oss.bytes += tmp; |
| 1374 | runtime->oss.period_ptr += tmp; |
| 1375 | runtime->oss.period_ptr %= runtime->oss.period_bytes; |
| 1376 | if (runtime->oss.period_ptr == 0 || |
| 1377 | runtime->oss.period_ptr == runtime->oss.buffer_used) |
| 1378 | runtime->oss.buffer_used = 0; |
Takashi Iwai | e3a5d59 | 2006-11-14 13:03:19 +0100 | [diff] [blame] | 1379 | else if ((substream->f_flags & O_NONBLOCK) != 0) { |
| 1380 | tmp = -EAGAIN; |
| 1381 | goto err; |
| 1382 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1383 | } |
| 1384 | } else { |
Clemens Ladisch | 4d23359 | 2005-09-05 10:35:20 +0200 | [diff] [blame] | 1385 | tmp = snd_pcm_oss_write2(substream, |
| 1386 | (const char __force *)buf, |
| 1387 | runtime->oss.period_bytes, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1388 | if (tmp <= 0) |
Takashi Iwai | e3a5d59 | 2006-11-14 13:03:19 +0100 | [diff] [blame] | 1389 | goto err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1390 | runtime->oss.bytes += tmp; |
| 1391 | buf += tmp; |
| 1392 | bytes -= tmp; |
| 1393 | xfer += tmp; |
Takashi Iwai | 0df63e4 | 2006-04-28 15:13:41 +0200 | [diff] [blame] | 1394 | if ((substream->f_flags & O_NONBLOCK) != 0 && |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1395 | tmp != runtime->oss.period_bytes) |
| 1396 | break; |
| 1397 | } |
| 1398 | } |
Takashi Iwai | e3a5d59 | 2006-11-14 13:03:19 +0100 | [diff] [blame] | 1399 | mutex_unlock(&runtime->oss.params_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1400 | return xfer; |
Takashi Iwai | e3a5d59 | 2006-11-14 13:03:19 +0100 | [diff] [blame] | 1401 | |
| 1402 | err: |
| 1403 | mutex_unlock(&runtime->oss.params_lock); |
| 1404 | return xfer > 0 ? (snd_pcm_sframes_t)xfer : tmp; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1405 | } |
| 1406 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1407 | 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] | 1408 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1409 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1410 | snd_pcm_sframes_t frames, frames1; |
Jaroslav Kysela | 21a3479 | 2006-01-13 09:12:11 +0100 | [diff] [blame] | 1411 | #ifdef CONFIG_SND_PCM_OSS_PLUGINS |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1412 | char __user *final_dst = (char __user *)buf; |
| 1413 | if (runtime->oss.plugin_first) { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1414 | struct snd_pcm_plugin_channel *channels; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1415 | size_t oss_frame_bytes = (runtime->oss.plugin_last->dst_width * runtime->oss.plugin_last->dst_format.channels) / 8; |
| 1416 | if (!in_kernel) |
| 1417 | buf = runtime->oss.buffer; |
| 1418 | frames = bytes / oss_frame_bytes; |
| 1419 | frames1 = snd_pcm_plug_client_channels_buf(substream, buf, frames, &channels); |
| 1420 | if (frames1 < 0) |
| 1421 | return frames1; |
| 1422 | frames1 = snd_pcm_plug_read_transfer(substream, channels, frames1); |
| 1423 | if (frames1 <= 0) |
| 1424 | return frames1; |
| 1425 | bytes = frames1 * oss_frame_bytes; |
| 1426 | if (!in_kernel && copy_to_user(final_dst, buf, bytes)) |
| 1427 | return -EFAULT; |
Jaroslav Kysela | 21a3479 | 2006-01-13 09:12:11 +0100 | [diff] [blame] | 1428 | } else |
| 1429 | #endif |
| 1430 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1431 | frames = bytes_to_frames(runtime, bytes); |
| 1432 | frames1 = snd_pcm_oss_read3(substream, buf, frames, in_kernel); |
| 1433 | if (frames1 <= 0) |
| 1434 | return frames1; |
| 1435 | bytes = frames_to_bytes(runtime, frames1); |
| 1436 | } |
| 1437 | return bytes; |
| 1438 | } |
| 1439 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1440 | 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] | 1441 | { |
| 1442 | size_t xfer = 0; |
| 1443 | ssize_t tmp; |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1444 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1445 | |
Takashi Iwai | 9c323fc | 2006-04-28 15:13:41 +0200 | [diff] [blame] | 1446 | if (atomic_read(&substream->mmap_count)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1447 | return -ENXIO; |
| 1448 | |
| 1449 | if ((tmp = snd_pcm_oss_make_ready(substream)) < 0) |
| 1450 | return tmp; |
Takashi Iwai | e3a5d59 | 2006-11-14 13:03:19 +0100 | [diff] [blame] | 1451 | mutex_lock(&runtime->oss.params_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1452 | while (bytes > 0) { |
| 1453 | if (bytes < runtime->oss.period_bytes || runtime->oss.buffer_used > 0) { |
| 1454 | if (runtime->oss.buffer_used == 0) { |
| 1455 | tmp = snd_pcm_oss_read2(substream, runtime->oss.buffer, runtime->oss.period_bytes, 1); |
| 1456 | if (tmp <= 0) |
Takashi Iwai | e3a5d59 | 2006-11-14 13:03:19 +0100 | [diff] [blame] | 1457 | goto err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1458 | runtime->oss.bytes += tmp; |
| 1459 | runtime->oss.period_ptr = tmp; |
| 1460 | runtime->oss.buffer_used = tmp; |
| 1461 | } |
| 1462 | tmp = bytes; |
| 1463 | if ((size_t) tmp > runtime->oss.buffer_used) |
| 1464 | tmp = runtime->oss.buffer_used; |
Takashi Iwai | e3a5d59 | 2006-11-14 13:03:19 +0100 | [diff] [blame] | 1465 | if (copy_to_user(buf, runtime->oss.buffer + (runtime->oss.period_ptr - runtime->oss.buffer_used), tmp)) { |
| 1466 | tmp = -EFAULT; |
| 1467 | goto err; |
| 1468 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1469 | buf += tmp; |
| 1470 | bytes -= tmp; |
| 1471 | xfer += tmp; |
| 1472 | runtime->oss.buffer_used -= tmp; |
| 1473 | } else { |
Clemens Ladisch | 4d23359 | 2005-09-05 10:35:20 +0200 | [diff] [blame] | 1474 | tmp = snd_pcm_oss_read2(substream, (char __force *)buf, |
| 1475 | runtime->oss.period_bytes, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1476 | if (tmp <= 0) |
Takashi Iwai | e3a5d59 | 2006-11-14 13:03:19 +0100 | [diff] [blame] | 1477 | goto err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1478 | runtime->oss.bytes += tmp; |
| 1479 | buf += tmp; |
| 1480 | bytes -= tmp; |
| 1481 | xfer += tmp; |
| 1482 | } |
| 1483 | } |
Takashi Iwai | e3a5d59 | 2006-11-14 13:03:19 +0100 | [diff] [blame] | 1484 | mutex_unlock(&runtime->oss.params_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1485 | return xfer; |
Takashi Iwai | e3a5d59 | 2006-11-14 13:03:19 +0100 | [diff] [blame] | 1486 | |
| 1487 | err: |
| 1488 | mutex_unlock(&runtime->oss.params_lock); |
| 1489 | return xfer > 0 ? (snd_pcm_sframes_t)xfer : tmp; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1490 | } |
| 1491 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1492 | 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] | 1493 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1494 | struct snd_pcm_substream *substream; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1495 | |
| 1496 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK]; |
| 1497 | if (substream != NULL) { |
Takashi Iwai | bf1bbb5 | 2006-03-27 16:22:45 +0200 | [diff] [blame] | 1498 | snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DROP, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1499 | substream->runtime->oss.prepare = 1; |
| 1500 | } |
| 1501 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE]; |
| 1502 | if (substream != NULL) { |
Takashi Iwai | bf1bbb5 | 2006-03-27 16:22:45 +0200 | [diff] [blame] | 1503 | snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DROP, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1504 | substream->runtime->oss.prepare = 1; |
| 1505 | } |
| 1506 | return 0; |
| 1507 | } |
| 1508 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1509 | 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] | 1510 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1511 | struct snd_pcm_substream *substream; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1512 | int err; |
| 1513 | |
| 1514 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK]; |
| 1515 | if (substream != NULL) { |
| 1516 | if ((err = snd_pcm_oss_make_ready(substream)) < 0) |
| 1517 | return err; |
Takashi Iwai | bf1bbb5 | 2006-03-27 16:22:45 +0200 | [diff] [blame] | 1518 | snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_START, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1519 | } |
| 1520 | /* note: all errors from the start action are ignored */ |
| 1521 | /* OSS apps do not know, how to handle them */ |
| 1522 | return 0; |
| 1523 | } |
| 1524 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1525 | 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] | 1526 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1527 | struct snd_pcm_runtime *runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1528 | ssize_t result = 0; |
| 1529 | long res; |
| 1530 | wait_queue_t wait; |
| 1531 | |
| 1532 | runtime = substream->runtime; |
| 1533 | init_waitqueue_entry(&wait, current); |
| 1534 | add_wait_queue(&runtime->sleep, &wait); |
| 1535 | #ifdef OSS_DEBUG |
| 1536 | printk("sync1: size = %li\n", size); |
| 1537 | #endif |
| 1538 | while (1) { |
| 1539 | result = snd_pcm_oss_write2(substream, runtime->oss.buffer, size, 1); |
| 1540 | if (result > 0) { |
| 1541 | runtime->oss.buffer_used = 0; |
| 1542 | result = 0; |
| 1543 | break; |
| 1544 | } |
| 1545 | if (result != 0 && result != -EAGAIN) |
| 1546 | break; |
| 1547 | result = 0; |
| 1548 | set_current_state(TASK_INTERRUPTIBLE); |
| 1549 | snd_pcm_stream_lock_irq(substream); |
| 1550 | res = runtime->status->state; |
| 1551 | snd_pcm_stream_unlock_irq(substream); |
| 1552 | if (res != SNDRV_PCM_STATE_RUNNING) { |
| 1553 | set_current_state(TASK_RUNNING); |
| 1554 | break; |
| 1555 | } |
| 1556 | res = schedule_timeout(10 * HZ); |
| 1557 | if (signal_pending(current)) { |
| 1558 | result = -ERESTARTSYS; |
| 1559 | break; |
| 1560 | } |
| 1561 | if (res == 0) { |
| 1562 | snd_printk(KERN_ERR "OSS sync error - DMA timeout\n"); |
| 1563 | result = -EIO; |
| 1564 | break; |
| 1565 | } |
| 1566 | } |
| 1567 | remove_wait_queue(&runtime->sleep, &wait); |
| 1568 | return result; |
| 1569 | } |
| 1570 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1571 | 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] | 1572 | { |
| 1573 | int err = 0; |
| 1574 | unsigned int saved_f_flags; |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1575 | struct snd_pcm_substream *substream; |
| 1576 | struct snd_pcm_runtime *runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1577 | snd_pcm_format_t format; |
| 1578 | unsigned long width; |
| 1579 | size_t size; |
| 1580 | |
| 1581 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK]; |
| 1582 | if (substream != NULL) { |
| 1583 | runtime = substream->runtime; |
Takashi Iwai | 9c323fc | 2006-04-28 15:13:41 +0200 | [diff] [blame] | 1584 | if (atomic_read(&substream->mmap_count)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1585 | goto __direct; |
| 1586 | if ((err = snd_pcm_oss_make_ready(substream)) < 0) |
| 1587 | return err; |
| 1588 | format = snd_pcm_oss_format_from(runtime->oss.format); |
| 1589 | width = snd_pcm_format_physical_width(format); |
Takashi Iwai | e3a5d59 | 2006-11-14 13:03:19 +0100 | [diff] [blame] | 1590 | mutex_lock(&runtime->oss.params_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1591 | if (runtime->oss.buffer_used > 0) { |
| 1592 | #ifdef OSS_DEBUG |
| 1593 | printk("sync: buffer_used\n"); |
| 1594 | #endif |
| 1595 | size = (8 * (runtime->oss.period_bytes - runtime->oss.buffer_used) + 7) / width; |
| 1596 | snd_pcm_format_set_silence(format, |
| 1597 | runtime->oss.buffer + runtime->oss.buffer_used, |
| 1598 | size); |
| 1599 | err = snd_pcm_oss_sync1(substream, runtime->oss.period_bytes); |
Takashi Iwai | e3a5d59 | 2006-11-14 13:03:19 +0100 | [diff] [blame] | 1600 | if (err < 0) { |
| 1601 | mutex_unlock(&runtime->oss.params_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1602 | return err; |
Takashi Iwai | e3a5d59 | 2006-11-14 13:03:19 +0100 | [diff] [blame] | 1603 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1604 | } else if (runtime->oss.period_ptr > 0) { |
| 1605 | #ifdef OSS_DEBUG |
| 1606 | printk("sync: period_ptr\n"); |
| 1607 | #endif |
| 1608 | size = runtime->oss.period_bytes - runtime->oss.period_ptr; |
| 1609 | snd_pcm_format_set_silence(format, |
| 1610 | runtime->oss.buffer, |
| 1611 | size * 8 / width); |
| 1612 | err = snd_pcm_oss_sync1(substream, size); |
Takashi Iwai | e3a5d59 | 2006-11-14 13:03:19 +0100 | [diff] [blame] | 1613 | if (err < 0) { |
| 1614 | mutex_unlock(&runtime->oss.params_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1615 | return err; |
Takashi Iwai | e3a5d59 | 2006-11-14 13:03:19 +0100 | [diff] [blame] | 1616 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1617 | } |
| 1618 | /* |
| 1619 | * The ALSA's period might be a bit large than OSS one. |
| 1620 | * Fill the remain portion of ALSA period with zeros. |
| 1621 | */ |
| 1622 | size = runtime->control->appl_ptr % runtime->period_size; |
| 1623 | if (size > 0) { |
| 1624 | size = runtime->period_size - size; |
| 1625 | if (runtime->access == SNDRV_PCM_ACCESS_RW_INTERLEAVED) { |
| 1626 | size = (runtime->frame_bits * size) / 8; |
| 1627 | while (size > 0) { |
| 1628 | mm_segment_t fs; |
| 1629 | size_t size1 = size < runtime->oss.period_bytes ? size : runtime->oss.period_bytes; |
| 1630 | size -= size1; |
| 1631 | size1 *= 8; |
| 1632 | size1 /= runtime->sample_bits; |
| 1633 | snd_pcm_format_set_silence(runtime->format, |
| 1634 | runtime->oss.buffer, |
| 1635 | size1); |
Takashi Iwai | 4939c66 | 2008-01-28 23:53:41 +0100 | [diff] [blame] | 1636 | size1 /= runtime->channels; /* frames */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1637 | fs = snd_enter_user(); |
| 1638 | snd_pcm_lib_write(substream, (void __user *)runtime->oss.buffer, size1); |
| 1639 | snd_leave_user(fs); |
| 1640 | } |
| 1641 | } else if (runtime->access == SNDRV_PCM_ACCESS_RW_NONINTERLEAVED) { |
| 1642 | void __user *buffers[runtime->channels]; |
| 1643 | memset(buffers, 0, runtime->channels * sizeof(void *)); |
| 1644 | snd_pcm_lib_writev(substream, buffers, size); |
| 1645 | } |
| 1646 | } |
Takashi Iwai | e3a5d59 | 2006-11-14 13:03:19 +0100 | [diff] [blame] | 1647 | mutex_unlock(&runtime->oss.params_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1648 | /* |
| 1649 | * finish sync: drain the buffer |
| 1650 | */ |
| 1651 | __direct: |
Takashi Iwai | 0df63e4 | 2006-04-28 15:13:41 +0200 | [diff] [blame] | 1652 | saved_f_flags = substream->f_flags; |
| 1653 | substream->f_flags &= ~O_NONBLOCK; |
Takashi Iwai | bf1bbb5 | 2006-03-27 16:22:45 +0200 | [diff] [blame] | 1654 | err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DRAIN, NULL); |
Takashi Iwai | 0df63e4 | 2006-04-28 15:13:41 +0200 | [diff] [blame] | 1655 | substream->f_flags = saved_f_flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1656 | if (err < 0) |
| 1657 | return err; |
| 1658 | runtime->oss.prepare = 1; |
| 1659 | } |
| 1660 | |
| 1661 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE]; |
| 1662 | if (substream != NULL) { |
| 1663 | if ((err = snd_pcm_oss_make_ready(substream)) < 0) |
| 1664 | return err; |
| 1665 | runtime = substream->runtime; |
Takashi Iwai | bf1bbb5 | 2006-03-27 16:22:45 +0200 | [diff] [blame] | 1666 | err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DROP, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1667 | if (err < 0) |
| 1668 | return err; |
| 1669 | runtime->oss.buffer_used = 0; |
| 1670 | runtime->oss.prepare = 1; |
| 1671 | } |
| 1672 | return 0; |
| 1673 | } |
| 1674 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1675 | 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] | 1676 | { |
| 1677 | int idx; |
| 1678 | |
| 1679 | for (idx = 1; idx >= 0; --idx) { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1680 | struct snd_pcm_substream *substream = pcm_oss_file->streams[idx]; |
| 1681 | struct snd_pcm_runtime *runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1682 | if (substream == NULL) |
| 1683 | continue; |
| 1684 | runtime = substream->runtime; |
| 1685 | if (rate < 1000) |
| 1686 | rate = 1000; |
| 1687 | else if (rate > 192000) |
| 1688 | rate = 192000; |
| 1689 | if (runtime->oss.rate != rate) { |
| 1690 | runtime->oss.params = 1; |
| 1691 | runtime->oss.rate = rate; |
| 1692 | } |
| 1693 | } |
| 1694 | return snd_pcm_oss_get_rate(pcm_oss_file); |
| 1695 | } |
| 1696 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1697 | 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] | 1698 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1699 | struct snd_pcm_substream *substream; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1700 | int err; |
| 1701 | |
| 1702 | if ((err = snd_pcm_oss_get_active_substream(pcm_oss_file, &substream)) < 0) |
| 1703 | return err; |
| 1704 | return substream->runtime->oss.rate; |
| 1705 | } |
| 1706 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1707 | 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] | 1708 | { |
| 1709 | int idx; |
| 1710 | if (channels < 1) |
| 1711 | channels = 1; |
| 1712 | if (channels > 128) |
| 1713 | return -EINVAL; |
| 1714 | for (idx = 1; idx >= 0; --idx) { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1715 | struct snd_pcm_substream *substream = pcm_oss_file->streams[idx]; |
| 1716 | struct snd_pcm_runtime *runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1717 | if (substream == NULL) |
| 1718 | continue; |
| 1719 | runtime = substream->runtime; |
| 1720 | if (runtime->oss.channels != channels) { |
| 1721 | runtime->oss.params = 1; |
| 1722 | runtime->oss.channels = channels; |
| 1723 | } |
| 1724 | } |
| 1725 | return snd_pcm_oss_get_channels(pcm_oss_file); |
| 1726 | } |
| 1727 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1728 | 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] | 1729 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1730 | struct snd_pcm_substream *substream; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1731 | int err; |
| 1732 | |
| 1733 | if ((err = snd_pcm_oss_get_active_substream(pcm_oss_file, &substream)) < 0) |
| 1734 | return err; |
| 1735 | return substream->runtime->oss.channels; |
| 1736 | } |
| 1737 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1738 | 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] | 1739 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1740 | struct snd_pcm_substream *substream; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1741 | int err; |
| 1742 | |
| 1743 | if ((err = snd_pcm_oss_get_active_substream(pcm_oss_file, &substream)) < 0) |
| 1744 | return err; |
| 1745 | return substream->runtime->oss.period_bytes; |
| 1746 | } |
| 1747 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1748 | 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] | 1749 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1750 | struct snd_pcm_substream *substream; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1751 | int err; |
| 1752 | int direct; |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1753 | struct snd_pcm_hw_params *params; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1754 | unsigned int formats = 0; |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1755 | struct snd_mask format_mask; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1756 | int fmt; |
| 1757 | |
| 1758 | if ((err = snd_pcm_oss_get_active_substream(pcm_oss_file, &substream)) < 0) |
| 1759 | return err; |
Takashi Iwai | 9c323fc | 2006-04-28 15:13:41 +0200 | [diff] [blame] | 1760 | if (atomic_read(&substream->mmap_count)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1761 | direct = 1; |
Takashi Iwai | 060d77b | 2006-03-27 16:44:52 +0200 | [diff] [blame] | 1762 | else |
| 1763 | direct = substream->oss.setup.direct; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1764 | if (!direct) |
| 1765 | return AFMT_MU_LAW | AFMT_U8 | |
| 1766 | AFMT_S16_LE | AFMT_S16_BE | |
| 1767 | AFMT_S8 | AFMT_U16_LE | |
Takashi Iwai | 24038a2 | 2007-08-08 17:00:32 +0200 | [diff] [blame] | 1768 | AFMT_U16_BE | |
| 1769 | AFMT_S32_LE | AFMT_S32_BE | |
Roel Kluin | 7924f0c | 2009-02-04 18:14:55 +0100 | [diff] [blame] | 1770 | AFMT_S24_LE | AFMT_S24_BE | |
Takashi Iwai | 24038a2 | 2007-08-08 17:00:32 +0200 | [diff] [blame] | 1771 | AFMT_S24_PACKED; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1772 | params = kmalloc(sizeof(*params), GFP_KERNEL); |
| 1773 | if (!params) |
| 1774 | return -ENOMEM; |
| 1775 | _snd_pcm_hw_params_any(params); |
| 1776 | err = snd_pcm_hw_refine(substream, params); |
| 1777 | format_mask = *hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT); |
| 1778 | kfree(params); |
Takashi Iwai | 7eaa943 | 2008-08-08 17:09:09 +0200 | [diff] [blame] | 1779 | if (err < 0) |
| 1780 | return err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1781 | for (fmt = 0; fmt < 32; ++fmt) { |
| 1782 | if (snd_mask_test(&format_mask, fmt)) { |
| 1783 | int f = snd_pcm_oss_format_to(fmt); |
| 1784 | if (f >= 0) |
| 1785 | formats |= f; |
| 1786 | } |
| 1787 | } |
| 1788 | return formats; |
| 1789 | } |
| 1790 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1791 | 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] | 1792 | { |
| 1793 | int formats, idx; |
| 1794 | |
| 1795 | if (format != AFMT_QUERY) { |
| 1796 | formats = snd_pcm_oss_get_formats(pcm_oss_file); |
Steven Finney | 5c59e09 | 2006-04-13 12:49:31 +0200 | [diff] [blame] | 1797 | if (formats < 0) |
| 1798 | return formats; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1799 | if (!(formats & format)) |
| 1800 | format = AFMT_U8; |
| 1801 | for (idx = 1; idx >= 0; --idx) { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1802 | struct snd_pcm_substream *substream = pcm_oss_file->streams[idx]; |
| 1803 | struct snd_pcm_runtime *runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1804 | if (substream == NULL) |
| 1805 | continue; |
| 1806 | runtime = substream->runtime; |
| 1807 | if (runtime->oss.format != format) { |
| 1808 | runtime->oss.params = 1; |
| 1809 | runtime->oss.format = format; |
| 1810 | } |
| 1811 | } |
| 1812 | } |
| 1813 | return snd_pcm_oss_get_format(pcm_oss_file); |
| 1814 | } |
| 1815 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1816 | 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] | 1817 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1818 | struct snd_pcm_substream *substream; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1819 | int err; |
| 1820 | |
| 1821 | if ((err = snd_pcm_oss_get_active_substream(pcm_oss_file, &substream)) < 0) |
| 1822 | return err; |
| 1823 | return substream->runtime->oss.format; |
| 1824 | } |
| 1825 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1826 | 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] | 1827 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1828 | struct snd_pcm_runtime *runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1829 | |
| 1830 | if (substream == NULL) |
| 1831 | return 0; |
| 1832 | runtime = substream->runtime; |
| 1833 | if (subdivide == 0) { |
| 1834 | subdivide = runtime->oss.subdivision; |
| 1835 | if (subdivide == 0) |
| 1836 | subdivide = 1; |
| 1837 | return subdivide; |
| 1838 | } |
| 1839 | if (runtime->oss.subdivision || runtime->oss.fragshift) |
| 1840 | return -EINVAL; |
| 1841 | if (subdivide != 1 && subdivide != 2 && subdivide != 4 && |
| 1842 | subdivide != 8 && subdivide != 16) |
| 1843 | return -EINVAL; |
| 1844 | runtime->oss.subdivision = subdivide; |
| 1845 | runtime->oss.params = 1; |
| 1846 | return subdivide; |
| 1847 | } |
| 1848 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1849 | 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] | 1850 | { |
| 1851 | int err = -EINVAL, idx; |
| 1852 | |
| 1853 | for (idx = 1; idx >= 0; --idx) { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1854 | struct snd_pcm_substream *substream = pcm_oss_file->streams[idx]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1855 | if (substream == NULL) |
| 1856 | continue; |
| 1857 | if ((err = snd_pcm_oss_set_subdivide1(substream, subdivide)) < 0) |
| 1858 | return err; |
| 1859 | } |
| 1860 | return err; |
| 1861 | } |
| 1862 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1863 | 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] | 1864 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1865 | struct snd_pcm_runtime *runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1866 | |
| 1867 | if (substream == NULL) |
| 1868 | return 0; |
| 1869 | runtime = substream->runtime; |
| 1870 | if (runtime->oss.subdivision || runtime->oss.fragshift) |
| 1871 | return -EINVAL; |
| 1872 | runtime->oss.fragshift = val & 0xffff; |
| 1873 | runtime->oss.maxfrags = (val >> 16) & 0xffff; |
| 1874 | if (runtime->oss.fragshift < 4) /* < 16 */ |
| 1875 | runtime->oss.fragshift = 4; |
| 1876 | if (runtime->oss.maxfrags < 2) |
| 1877 | runtime->oss.maxfrags = 2; |
| 1878 | runtime->oss.params = 1; |
| 1879 | return 0; |
| 1880 | } |
| 1881 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1882 | 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] | 1883 | { |
| 1884 | int err = -EINVAL, idx; |
| 1885 | |
| 1886 | for (idx = 1; idx >= 0; --idx) { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1887 | struct snd_pcm_substream *substream = pcm_oss_file->streams[idx]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1888 | if (substream == NULL) |
| 1889 | continue; |
| 1890 | if ((err = snd_pcm_oss_set_fragment1(substream, val)) < 0) |
| 1891 | return err; |
| 1892 | } |
| 1893 | return err; |
| 1894 | } |
| 1895 | |
| 1896 | static int snd_pcm_oss_nonblock(struct file * file) |
| 1897 | { |
Jonathan Corbet | db1dd4d | 2009-02-06 15:25:24 -0700 | [diff] [blame^] | 1898 | spin_lock(&file->f_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1899 | file->f_flags |= O_NONBLOCK; |
Jonathan Corbet | db1dd4d | 2009-02-06 15:25:24 -0700 | [diff] [blame^] | 1900 | spin_unlock(&file->f_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1901 | return 0; |
| 1902 | } |
| 1903 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1904 | 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] | 1905 | { |
| 1906 | |
| 1907 | if (substream == NULL) { |
| 1908 | res &= ~DSP_CAP_DUPLEX; |
| 1909 | return res; |
| 1910 | } |
| 1911 | #ifdef DSP_CAP_MULTI |
| 1912 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) |
| 1913 | if (substream->pstr->substream_count > 1) |
| 1914 | res |= DSP_CAP_MULTI; |
| 1915 | #endif |
| 1916 | /* DSP_CAP_REALTIME is set all times: */ |
| 1917 | /* all ALSA drivers can return actual pointer in ring buffer */ |
| 1918 | #if defined(DSP_CAP_REALTIME) && 0 |
| 1919 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1920 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1921 | if (runtime->info & (SNDRV_PCM_INFO_BLOCK_TRANSFER|SNDRV_PCM_INFO_BATCH)) |
| 1922 | res &= ~DSP_CAP_REALTIME; |
| 1923 | } |
| 1924 | #endif |
| 1925 | return res; |
| 1926 | } |
| 1927 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1928 | 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] | 1929 | { |
| 1930 | int result, idx; |
| 1931 | |
| 1932 | result = DSP_CAP_TRIGGER | DSP_CAP_MMAP | DSP_CAP_DUPLEX | DSP_CAP_REALTIME; |
| 1933 | for (idx = 0; idx < 2; idx++) { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1934 | struct snd_pcm_substream *substream = pcm_oss_file->streams[idx]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1935 | result = snd_pcm_oss_get_caps1(substream, result); |
| 1936 | } |
| 1937 | result |= 0x0001; /* revision - same as SB AWE 64 */ |
| 1938 | return result; |
| 1939 | } |
| 1940 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1941 | 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] | 1942 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1943 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1944 | snd_pcm_uframes_t appl_ptr; |
| 1945 | appl_ptr = hw_ptr + runtime->buffer_size; |
| 1946 | appl_ptr %= runtime->boundary; |
| 1947 | runtime->control->appl_ptr = appl_ptr; |
| 1948 | } |
| 1949 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1950 | 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] | 1951 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1952 | struct snd_pcm_runtime *runtime; |
| 1953 | struct snd_pcm_substream *psubstream = NULL, *csubstream = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1954 | int err, cmd; |
| 1955 | |
| 1956 | #ifdef OSS_DEBUG |
| 1957 | printk("pcm_oss: trigger = 0x%x\n", trigger); |
| 1958 | #endif |
| 1959 | |
| 1960 | psubstream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK]; |
| 1961 | csubstream = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE]; |
| 1962 | |
| 1963 | if (psubstream) { |
| 1964 | if ((err = snd_pcm_oss_make_ready(psubstream)) < 0) |
| 1965 | return err; |
| 1966 | } |
| 1967 | if (csubstream) { |
| 1968 | if ((err = snd_pcm_oss_make_ready(csubstream)) < 0) |
| 1969 | return err; |
| 1970 | } |
| 1971 | if (psubstream) { |
| 1972 | runtime = psubstream->runtime; |
| 1973 | if (trigger & PCM_ENABLE_OUTPUT) { |
| 1974 | if (runtime->oss.trigger) |
| 1975 | goto _skip1; |
Takashi Iwai | 9c323fc | 2006-04-28 15:13:41 +0200 | [diff] [blame] | 1976 | if (atomic_read(&psubstream->mmap_count)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1977 | snd_pcm_oss_simulate_fill(psubstream, runtime->hw_ptr_interrupt); |
| 1978 | runtime->oss.trigger = 1; |
| 1979 | runtime->start_threshold = 1; |
| 1980 | cmd = SNDRV_PCM_IOCTL_START; |
| 1981 | } else { |
| 1982 | if (!runtime->oss.trigger) |
| 1983 | goto _skip1; |
| 1984 | runtime->oss.trigger = 0; |
| 1985 | runtime->start_threshold = runtime->boundary; |
| 1986 | cmd = SNDRV_PCM_IOCTL_DROP; |
| 1987 | runtime->oss.prepare = 1; |
| 1988 | } |
Takashi Iwai | bf1bbb5 | 2006-03-27 16:22:45 +0200 | [diff] [blame] | 1989 | err = snd_pcm_kernel_ioctl(psubstream, cmd, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1990 | if (err < 0) |
| 1991 | return err; |
| 1992 | } |
| 1993 | _skip1: |
| 1994 | if (csubstream) { |
| 1995 | runtime = csubstream->runtime; |
| 1996 | if (trigger & PCM_ENABLE_INPUT) { |
| 1997 | if (runtime->oss.trigger) |
| 1998 | goto _skip2; |
| 1999 | runtime->oss.trigger = 1; |
| 2000 | runtime->start_threshold = 1; |
| 2001 | cmd = SNDRV_PCM_IOCTL_START; |
| 2002 | } else { |
| 2003 | if (!runtime->oss.trigger) |
| 2004 | goto _skip2; |
| 2005 | runtime->oss.trigger = 0; |
| 2006 | runtime->start_threshold = runtime->boundary; |
| 2007 | cmd = SNDRV_PCM_IOCTL_DROP; |
| 2008 | runtime->oss.prepare = 1; |
| 2009 | } |
Takashi Iwai | bf1bbb5 | 2006-03-27 16:22:45 +0200 | [diff] [blame] | 2010 | err = snd_pcm_kernel_ioctl(csubstream, cmd, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2011 | if (err < 0) |
| 2012 | return err; |
| 2013 | } |
| 2014 | _skip2: |
| 2015 | return 0; |
| 2016 | } |
| 2017 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2018 | 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] | 2019 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2020 | struct snd_pcm_substream *psubstream = NULL, *csubstream = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2021 | int result = 0; |
| 2022 | |
| 2023 | psubstream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK]; |
| 2024 | csubstream = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE]; |
| 2025 | if (psubstream && psubstream->runtime && psubstream->runtime->oss.trigger) |
| 2026 | result |= PCM_ENABLE_OUTPUT; |
| 2027 | if (csubstream && csubstream->runtime && csubstream->runtime->oss.trigger) |
| 2028 | result |= PCM_ENABLE_INPUT; |
| 2029 | return result; |
| 2030 | } |
| 2031 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2032 | 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] | 2033 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2034 | struct snd_pcm_substream *substream; |
| 2035 | struct snd_pcm_runtime *runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2036 | snd_pcm_sframes_t delay; |
| 2037 | int err; |
| 2038 | |
| 2039 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK]; |
| 2040 | if (substream == NULL) |
| 2041 | return -EINVAL; |
| 2042 | if ((err = snd_pcm_oss_make_ready(substream)) < 0) |
| 2043 | return err; |
| 2044 | runtime = substream->runtime; |
| 2045 | if (runtime->oss.params || runtime->oss.prepare) |
| 2046 | return 0; |
Takashi Iwai | bf1bbb5 | 2006-03-27 16:22:45 +0200 | [diff] [blame] | 2047 | err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DELAY, &delay); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2048 | if (err == -EPIPE) |
| 2049 | delay = 0; /* hack for broken OSS applications */ |
| 2050 | else if (err < 0) |
| 2051 | return err; |
| 2052 | return snd_pcm_oss_bytes(substream, delay); |
| 2053 | } |
| 2054 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2055 | 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] | 2056 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2057 | struct snd_pcm_substream *substream; |
| 2058 | struct snd_pcm_runtime *runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2059 | snd_pcm_sframes_t delay; |
| 2060 | int fixup; |
| 2061 | struct count_info info; |
| 2062 | int err; |
| 2063 | |
| 2064 | if (_info == NULL) |
| 2065 | return -EFAULT; |
| 2066 | substream = pcm_oss_file->streams[stream]; |
| 2067 | if (substream == NULL) |
| 2068 | return -EINVAL; |
| 2069 | if ((err = snd_pcm_oss_make_ready(substream)) < 0) |
| 2070 | return err; |
| 2071 | runtime = substream->runtime; |
| 2072 | if (runtime->oss.params || runtime->oss.prepare) { |
| 2073 | memset(&info, 0, sizeof(info)); |
| 2074 | if (copy_to_user(_info, &info, sizeof(info))) |
| 2075 | return -EFAULT; |
| 2076 | return 0; |
| 2077 | } |
| 2078 | if (stream == SNDRV_PCM_STREAM_PLAYBACK) { |
| 2079 | err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DELAY, &delay); |
| 2080 | if (err == -EPIPE || err == -ESTRPIPE || (! err && delay < 0)) { |
| 2081 | err = 0; |
| 2082 | delay = 0; |
| 2083 | fixup = 0; |
| 2084 | } else { |
| 2085 | fixup = runtime->oss.buffer_used; |
| 2086 | } |
| 2087 | } else { |
| 2088 | err = snd_pcm_oss_capture_position_fixup(substream, &delay); |
| 2089 | fixup = -runtime->oss.buffer_used; |
| 2090 | } |
| 2091 | if (err < 0) |
| 2092 | return err; |
| 2093 | 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] | 2094 | if (atomic_read(&substream->mmap_count)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2095 | snd_pcm_sframes_t n; |
| 2096 | n = (delay = runtime->hw_ptr_interrupt) - runtime->oss.prev_hw_ptr_interrupt; |
| 2097 | if (n < 0) |
| 2098 | n += runtime->boundary; |
| 2099 | info.blocks = n / runtime->period_size; |
| 2100 | runtime->oss.prev_hw_ptr_interrupt = delay; |
| 2101 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) |
| 2102 | snd_pcm_oss_simulate_fill(substream, delay); |
| 2103 | info.bytes = snd_pcm_oss_bytes(substream, runtime->status->hw_ptr) & INT_MAX; |
| 2104 | } else { |
Jaroslav Kysela | 5ac0fab | 2005-05-31 16:59:39 +0200 | [diff] [blame] | 2105 | delay = snd_pcm_oss_bytes(substream, delay); |
Jaroslav Kysela | fb4bd0a | 2005-05-31 15:44:23 +0200 | [diff] [blame] | 2106 | if (stream == SNDRV_PCM_STREAM_PLAYBACK) { |
Takashi Iwai | 060d77b | 2006-03-27 16:44:52 +0200 | [diff] [blame] | 2107 | if (substream->oss.setup.buggyptr) |
Takashi Iwai | 10f69f9 | 2005-09-08 13:48:34 +0200 | [diff] [blame] | 2108 | info.blocks = (runtime->oss.buffer_bytes - delay - fixup) / runtime->oss.period_bytes; |
| 2109 | else |
| 2110 | info.blocks = (delay + fixup) / runtime->oss.period_bytes; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2111 | info.bytes = (runtime->oss.bytes - delay) & INT_MAX; |
Jaroslav Kysela | fb4bd0a | 2005-05-31 15:44:23 +0200 | [diff] [blame] | 2112 | } else { |
Jaroslav Kysela | 5ac0fab | 2005-05-31 16:59:39 +0200 | [diff] [blame] | 2113 | delay += fixup; |
| 2114 | info.blocks = delay / runtime->oss.period_bytes; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2115 | info.bytes = (runtime->oss.bytes + delay) & INT_MAX; |
Jaroslav Kysela | fb4bd0a | 2005-05-31 15:44:23 +0200 | [diff] [blame] | 2116 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2117 | } |
| 2118 | if (copy_to_user(_info, &info, sizeof(info))) |
| 2119 | return -EFAULT; |
| 2120 | return 0; |
| 2121 | } |
| 2122 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2123 | 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] | 2124 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2125 | struct snd_pcm_substream *substream; |
| 2126 | struct snd_pcm_runtime *runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2127 | snd_pcm_sframes_t avail; |
| 2128 | int fixup; |
| 2129 | struct audio_buf_info info; |
| 2130 | int err; |
| 2131 | |
| 2132 | if (_info == NULL) |
| 2133 | return -EFAULT; |
| 2134 | substream = pcm_oss_file->streams[stream]; |
| 2135 | if (substream == NULL) |
| 2136 | return -EINVAL; |
| 2137 | runtime = substream->runtime; |
| 2138 | |
| 2139 | if (runtime->oss.params && |
| 2140 | (err = snd_pcm_oss_change_params(substream)) < 0) |
| 2141 | return err; |
| 2142 | |
| 2143 | info.fragsize = runtime->oss.period_bytes; |
| 2144 | info.fragstotal = runtime->periods; |
| 2145 | if (runtime->oss.prepare) { |
| 2146 | if (stream == SNDRV_PCM_STREAM_PLAYBACK) { |
| 2147 | info.bytes = runtime->oss.period_bytes * runtime->oss.periods; |
| 2148 | info.fragments = runtime->oss.periods; |
| 2149 | } else { |
| 2150 | info.bytes = 0; |
| 2151 | info.fragments = 0; |
| 2152 | } |
| 2153 | } else { |
| 2154 | if (stream == SNDRV_PCM_STREAM_PLAYBACK) { |
| 2155 | err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DELAY, &avail); |
| 2156 | if (err == -EPIPE || err == -ESTRPIPE || (! err && avail < 0)) { |
| 2157 | avail = runtime->buffer_size; |
| 2158 | err = 0; |
| 2159 | fixup = 0; |
| 2160 | } else { |
| 2161 | avail = runtime->buffer_size - avail; |
| 2162 | fixup = -runtime->oss.buffer_used; |
| 2163 | } |
| 2164 | } else { |
| 2165 | err = snd_pcm_oss_capture_position_fixup(substream, &avail); |
| 2166 | fixup = runtime->oss.buffer_used; |
| 2167 | } |
| 2168 | if (err < 0) |
| 2169 | return err; |
| 2170 | info.bytes = snd_pcm_oss_bytes(substream, avail) + fixup; |
| 2171 | info.fragments = info.bytes / runtime->oss.period_bytes; |
| 2172 | } |
| 2173 | |
| 2174 | #ifdef OSS_DEBUG |
| 2175 | printk("pcm_oss: space: bytes = %i, fragments = %i, fragstotal = %i, fragsize = %i\n", info.bytes, info.fragments, info.fragstotal, info.fragsize); |
| 2176 | #endif |
| 2177 | if (copy_to_user(_info, &info, sizeof(info))) |
| 2178 | return -EFAULT; |
| 2179 | return 0; |
| 2180 | } |
| 2181 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2182 | 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] | 2183 | { |
| 2184 | // it won't be probably implemented |
| 2185 | // snd_printd("TODO: snd_pcm_oss_get_mapbuf\n"); |
| 2186 | return -EINVAL; |
| 2187 | } |
| 2188 | |
Takashi Iwai | 060d77b | 2006-03-27 16:44:52 +0200 | [diff] [blame] | 2189 | static const char *strip_task_path(const char *path) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2190 | { |
Takashi Iwai | 060d77b | 2006-03-27 16:44:52 +0200 | [diff] [blame] | 2191 | const char *ptr, *ptrl = NULL; |
| 2192 | for (ptr = path; *ptr; ptr++) { |
| 2193 | if (*ptr == '/') |
| 2194 | ptrl = ptr + 1; |
| 2195 | } |
| 2196 | return ptrl; |
| 2197 | } |
| 2198 | |
| 2199 | static void snd_pcm_oss_look_for_setup(struct snd_pcm *pcm, int stream, |
| 2200 | const char *task_name, |
| 2201 | struct snd_pcm_oss_setup *rsetup) |
| 2202 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2203 | struct snd_pcm_oss_setup *setup; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2204 | |
Ingo Molnar | 1a60d4c | 2006-01-16 16:29:08 +0100 | [diff] [blame] | 2205 | mutex_lock(&pcm->streams[stream].oss.setup_mutex); |
Takashi Iwai | 060d77b | 2006-03-27 16:44:52 +0200 | [diff] [blame] | 2206 | do { |
| 2207 | for (setup = pcm->streams[stream].oss.setup_list; setup; |
| 2208 | setup = setup->next) { |
| 2209 | if (!strcmp(setup->task_name, task_name)) |
| 2210 | goto out; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2211 | } |
Takashi Iwai | 060d77b | 2006-03-27 16:44:52 +0200 | [diff] [blame] | 2212 | } while ((task_name = strip_task_path(task_name)) != NULL); |
| 2213 | out: |
| 2214 | if (setup) |
| 2215 | *rsetup = *setup; |
Ingo Molnar | 1a60d4c | 2006-01-16 16:29:08 +0100 | [diff] [blame] | 2216 | mutex_unlock(&pcm->streams[stream].oss.setup_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2217 | } |
| 2218 | |
Takashi Iwai | 3bf75f9 | 2006-03-27 16:40:49 +0200 | [diff] [blame] | 2219 | static void snd_pcm_oss_release_substream(struct snd_pcm_substream *substream) |
| 2220 | { |
| 2221 | struct snd_pcm_runtime *runtime; |
| 2222 | runtime = substream->runtime; |
| 2223 | vfree(runtime->oss.buffer); |
| 2224 | runtime->oss.buffer = NULL; |
| 2225 | #ifdef CONFIG_SND_PCM_OSS_PLUGINS |
| 2226 | snd_pcm_oss_plugin_clear(substream); |
| 2227 | #endif |
| 2228 | substream->oss.oss = 0; |
| 2229 | } |
| 2230 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2231 | static void snd_pcm_oss_init_substream(struct snd_pcm_substream *substream, |
| 2232 | struct snd_pcm_oss_setup *setup, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2233 | int minor) |
| 2234 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2235 | struct snd_pcm_runtime *runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2236 | |
| 2237 | substream->oss.oss = 1; |
Takashi Iwai | 060d77b | 2006-03-27 16:44:52 +0200 | [diff] [blame] | 2238 | substream->oss.setup = *setup; |
Takashi Iwai | 3bf75f9 | 2006-03-27 16:40:49 +0200 | [diff] [blame] | 2239 | if (setup->nonblock) |
Takashi Iwai | 0df63e4 | 2006-04-28 15:13:41 +0200 | [diff] [blame] | 2240 | substream->f_flags |= O_NONBLOCK; |
Takashi Iwai | 1576274 | 2006-04-06 19:47:42 +0200 | [diff] [blame] | 2241 | else if (setup->block) |
Takashi Iwai | 0df63e4 | 2006-04-28 15:13:41 +0200 | [diff] [blame] | 2242 | substream->f_flags &= ~O_NONBLOCK; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2243 | runtime = substream->runtime; |
| 2244 | runtime->oss.params = 1; |
| 2245 | runtime->oss.trigger = 1; |
| 2246 | runtime->oss.rate = 8000; |
Takashi Iwai | e3a5d59 | 2006-11-14 13:03:19 +0100 | [diff] [blame] | 2247 | mutex_init(&runtime->oss.params_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2248 | switch (SNDRV_MINOR_OSS_DEVICE(minor)) { |
| 2249 | case SNDRV_MINOR_OSS_PCM_8: |
| 2250 | runtime->oss.format = AFMT_U8; |
| 2251 | break; |
| 2252 | case SNDRV_MINOR_OSS_PCM_16: |
| 2253 | runtime->oss.format = AFMT_S16_LE; |
| 2254 | break; |
| 2255 | default: |
| 2256 | runtime->oss.format = AFMT_MU_LAW; |
| 2257 | } |
| 2258 | runtime->oss.channels = 1; |
| 2259 | runtime->oss.fragshift = 0; |
| 2260 | runtime->oss.maxfrags = 0; |
| 2261 | runtime->oss.subdivision = 0; |
Takashi Iwai | 3bf75f9 | 2006-03-27 16:40:49 +0200 | [diff] [blame] | 2262 | substream->pcm_release = snd_pcm_oss_release_substream; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2263 | } |
| 2264 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2265 | 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] | 2266 | { |
| 2267 | int cidx; |
Takashi Iwai | 7eaa943 | 2008-08-08 17:09:09 +0200 | [diff] [blame] | 2268 | if (!pcm_oss_file) |
| 2269 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2270 | for (cidx = 0; cidx < 2; ++cidx) { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2271 | struct snd_pcm_substream *substream = pcm_oss_file->streams[cidx]; |
Takashi Iwai | 3bf75f9 | 2006-03-27 16:40:49 +0200 | [diff] [blame] | 2272 | if (substream) |
| 2273 | snd_pcm_release_substream(substream); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2274 | } |
| 2275 | kfree(pcm_oss_file); |
| 2276 | return 0; |
| 2277 | } |
| 2278 | |
| 2279 | static int snd_pcm_oss_open_file(struct file *file, |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2280 | struct snd_pcm *pcm, |
| 2281 | struct snd_pcm_oss_file **rpcm_oss_file, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2282 | int minor, |
Takashi Iwai | 060d77b | 2006-03-27 16:44:52 +0200 | [diff] [blame] | 2283 | struct snd_pcm_oss_setup *setup) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2284 | { |
Takashi Iwai | 3bf75f9 | 2006-03-27 16:40:49 +0200 | [diff] [blame] | 2285 | int idx, err; |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2286 | struct snd_pcm_oss_file *pcm_oss_file; |
Takashi Iwai | 3bf75f9 | 2006-03-27 16:40:49 +0200 | [diff] [blame] | 2287 | struct snd_pcm_substream *substream; |
Al Viro | aeb5d72 | 2008-09-02 15:28:45 -0400 | [diff] [blame] | 2288 | fmode_t f_mode = file->f_mode; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2289 | |
Takashi Iwai | 7eaa943 | 2008-08-08 17:09:09 +0200 | [diff] [blame] | 2290 | if (rpcm_oss_file) |
| 2291 | *rpcm_oss_file = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2292 | |
Takashi Iwai | ca2c096 | 2005-09-09 14:20:23 +0200 | [diff] [blame] | 2293 | pcm_oss_file = kzalloc(sizeof(*pcm_oss_file), GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2294 | if (pcm_oss_file == NULL) |
| 2295 | return -ENOMEM; |
| 2296 | |
| 2297 | if ((f_mode & (FMODE_WRITE|FMODE_READ)) == (FMODE_WRITE|FMODE_READ) && |
| 2298 | (pcm->info_flags & SNDRV_PCM_INFO_HALF_DUPLEX)) |
| 2299 | f_mode = FMODE_WRITE; |
Takashi Iwai | 3bf75f9 | 2006-03-27 16:40:49 +0200 | [diff] [blame] | 2300 | |
Takashi Iwai | 0df63e4 | 2006-04-28 15:13:41 +0200 | [diff] [blame] | 2301 | file->f_flags &= ~O_APPEND; |
Takashi Iwai | 3bf75f9 | 2006-03-27 16:40:49 +0200 | [diff] [blame] | 2302 | for (idx = 0; idx < 2; idx++) { |
Takashi Iwai | 060d77b | 2006-03-27 16:44:52 +0200 | [diff] [blame] | 2303 | if (setup[idx].disable) |
Takashi Iwai | 3bf75f9 | 2006-03-27 16:40:49 +0200 | [diff] [blame] | 2304 | continue; |
Takashi Iwai | 6cb53e7 | 2006-08-02 21:12:09 +0200 | [diff] [blame] | 2305 | if (! pcm->streams[idx].substream_count) |
| 2306 | continue; /* no matching substream */ |
Takashi Iwai | 3bf75f9 | 2006-03-27 16:40:49 +0200 | [diff] [blame] | 2307 | if (idx == SNDRV_PCM_STREAM_PLAYBACK) { |
| 2308 | if (! (f_mode & FMODE_WRITE)) |
| 2309 | continue; |
| 2310 | } else { |
| 2311 | if (! (f_mode & FMODE_READ)) |
| 2312 | continue; |
| 2313 | } |
| 2314 | err = snd_pcm_open_substream(pcm, idx, file, &substream); |
| 2315 | if (err < 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2316 | snd_pcm_oss_release_file(pcm_oss_file); |
| 2317 | return err; |
| 2318 | } |
Takashi Iwai | 3bf75f9 | 2006-03-27 16:40:49 +0200 | [diff] [blame] | 2319 | |
| 2320 | pcm_oss_file->streams[idx] = substream; |
Takashi Iwai | 1576274 | 2006-04-06 19:47:42 +0200 | [diff] [blame] | 2321 | substream->file = pcm_oss_file; |
Takashi Iwai | 060d77b | 2006-03-27 16:44:52 +0200 | [diff] [blame] | 2322 | snd_pcm_oss_init_substream(substream, &setup[idx], minor); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2323 | } |
| 2324 | |
OGAWA Hirofumi | bbdc1b7 | 2006-04-06 19:42:40 +0200 | [diff] [blame] | 2325 | if (!pcm_oss_file->streams[0] && !pcm_oss_file->streams[1]) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2326 | snd_pcm_oss_release_file(pcm_oss_file); |
| 2327 | return -EINVAL; |
| 2328 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2329 | |
| 2330 | file->private_data = pcm_oss_file; |
Takashi Iwai | 7eaa943 | 2008-08-08 17:09:09 +0200 | [diff] [blame] | 2331 | if (rpcm_oss_file) |
| 2332 | *rpcm_oss_file = pcm_oss_file; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2333 | return 0; |
| 2334 | } |
| 2335 | |
| 2336 | |
Takashi Iwai | 93f2e37 | 2005-10-10 11:51:55 +0200 | [diff] [blame] | 2337 | static int snd_task_name(struct task_struct *task, char *name, size_t size) |
| 2338 | { |
| 2339 | unsigned int idx; |
| 2340 | |
Takashi Iwai | 7eaa943 | 2008-08-08 17:09:09 +0200 | [diff] [blame] | 2341 | if (snd_BUG_ON(!task || !name || size < 2)) |
| 2342 | return -EINVAL; |
Takashi Iwai | 93f2e37 | 2005-10-10 11:51:55 +0200 | [diff] [blame] | 2343 | for (idx = 0; idx < sizeof(task->comm) && idx + 1 < size; idx++) |
| 2344 | name[idx] = task->comm[idx]; |
| 2345 | name[idx] = '\0'; |
| 2346 | return 0; |
| 2347 | } |
| 2348 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2349 | static int snd_pcm_oss_open(struct inode *inode, struct file *file) |
| 2350 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2351 | int err; |
| 2352 | char task_name[32]; |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2353 | struct snd_pcm *pcm; |
| 2354 | struct snd_pcm_oss_file *pcm_oss_file; |
Takashi Iwai | 060d77b | 2006-03-27 16:44:52 +0200 | [diff] [blame] | 2355 | struct snd_pcm_oss_setup setup[2]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2356 | int nonblock; |
| 2357 | wait_queue_t wait; |
| 2358 | |
Clemens Ladisch | f87135f | 2005-11-20 14:06:59 +0100 | [diff] [blame] | 2359 | pcm = snd_lookup_oss_minor_data(iminor(inode), |
| 2360 | SNDRV_OSS_DEVICE_TYPE_PCM); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2361 | if (pcm == NULL) { |
| 2362 | err = -ENODEV; |
| 2363 | goto __error1; |
| 2364 | } |
| 2365 | err = snd_card_file_add(pcm->card, file); |
| 2366 | if (err < 0) |
| 2367 | goto __error1; |
| 2368 | if (!try_module_get(pcm->card->module)) { |
| 2369 | err = -EFAULT; |
| 2370 | goto __error2; |
| 2371 | } |
| 2372 | if (snd_task_name(current, task_name, sizeof(task_name)) < 0) { |
| 2373 | err = -EFAULT; |
| 2374 | goto __error; |
| 2375 | } |
Takashi Iwai | 1576274 | 2006-04-06 19:47:42 +0200 | [diff] [blame] | 2376 | memset(setup, 0, sizeof(setup)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2377 | if (file->f_mode & FMODE_WRITE) |
Takashi Iwai | 060d77b | 2006-03-27 16:44:52 +0200 | [diff] [blame] | 2378 | snd_pcm_oss_look_for_setup(pcm, SNDRV_PCM_STREAM_PLAYBACK, |
| 2379 | task_name, &setup[0]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2380 | if (file->f_mode & FMODE_READ) |
Takashi Iwai | 060d77b | 2006-03-27 16:44:52 +0200 | [diff] [blame] | 2381 | snd_pcm_oss_look_for_setup(pcm, SNDRV_PCM_STREAM_CAPTURE, |
| 2382 | task_name, &setup[1]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2383 | |
| 2384 | nonblock = !!(file->f_flags & O_NONBLOCK); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2385 | if (!nonblock) |
| 2386 | nonblock = nonblock_open; |
| 2387 | |
| 2388 | init_waitqueue_entry(&wait, current); |
| 2389 | add_wait_queue(&pcm->open_wait, &wait); |
Ingo Molnar | 1a60d4c | 2006-01-16 16:29:08 +0100 | [diff] [blame] | 2390 | mutex_lock(&pcm->open_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2391 | while (1) { |
| 2392 | err = snd_pcm_oss_open_file(file, pcm, &pcm_oss_file, |
Takashi Iwai | 3bf75f9 | 2006-03-27 16:40:49 +0200 | [diff] [blame] | 2393 | iminor(inode), setup); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2394 | if (err >= 0) |
| 2395 | break; |
| 2396 | if (err == -EAGAIN) { |
| 2397 | if (nonblock) { |
| 2398 | err = -EBUSY; |
| 2399 | break; |
| 2400 | } |
| 2401 | } else |
| 2402 | break; |
| 2403 | set_current_state(TASK_INTERRUPTIBLE); |
Ingo Molnar | 1a60d4c | 2006-01-16 16:29:08 +0100 | [diff] [blame] | 2404 | mutex_unlock(&pcm->open_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2405 | schedule(); |
Ingo Molnar | 1a60d4c | 2006-01-16 16:29:08 +0100 | [diff] [blame] | 2406 | mutex_lock(&pcm->open_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2407 | if (signal_pending(current)) { |
| 2408 | err = -ERESTARTSYS; |
| 2409 | break; |
| 2410 | } |
| 2411 | } |
| 2412 | remove_wait_queue(&pcm->open_wait, &wait); |
Ingo Molnar | 1a60d4c | 2006-01-16 16:29:08 +0100 | [diff] [blame] | 2413 | mutex_unlock(&pcm->open_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2414 | if (err < 0) |
| 2415 | goto __error; |
| 2416 | return err; |
| 2417 | |
| 2418 | __error: |
| 2419 | module_put(pcm->card->module); |
| 2420 | __error2: |
| 2421 | snd_card_file_remove(pcm->card, file); |
| 2422 | __error1: |
| 2423 | return err; |
| 2424 | } |
| 2425 | |
| 2426 | static int snd_pcm_oss_release(struct inode *inode, struct file *file) |
| 2427 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2428 | struct snd_pcm *pcm; |
| 2429 | struct snd_pcm_substream *substream; |
| 2430 | struct snd_pcm_oss_file *pcm_oss_file; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2431 | |
| 2432 | pcm_oss_file = file->private_data; |
| 2433 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK]; |
| 2434 | if (substream == NULL) |
| 2435 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE]; |
Takashi Iwai | 7eaa943 | 2008-08-08 17:09:09 +0200 | [diff] [blame] | 2436 | if (snd_BUG_ON(!substream)) |
| 2437 | return -ENXIO; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2438 | pcm = substream->pcm; |
Takashi Iwai | de1b8b9 | 2006-11-08 15:41:29 +0100 | [diff] [blame] | 2439 | if (!pcm->card->shutdown) |
| 2440 | snd_pcm_oss_sync(pcm_oss_file); |
Ingo Molnar | 1a60d4c | 2006-01-16 16:29:08 +0100 | [diff] [blame] | 2441 | mutex_lock(&pcm->open_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2442 | snd_pcm_oss_release_file(pcm_oss_file); |
Ingo Molnar | 1a60d4c | 2006-01-16 16:29:08 +0100 | [diff] [blame] | 2443 | mutex_unlock(&pcm->open_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2444 | wake_up(&pcm->open_wait); |
| 2445 | module_put(pcm->card->module); |
| 2446 | snd_card_file_remove(pcm->card, file); |
| 2447 | return 0; |
| 2448 | } |
| 2449 | |
| 2450 | static long snd_pcm_oss_ioctl(struct file *file, unsigned int cmd, unsigned long arg) |
| 2451 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2452 | struct snd_pcm_oss_file *pcm_oss_file; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2453 | int __user *p = (int __user *)arg; |
| 2454 | int res; |
| 2455 | |
| 2456 | pcm_oss_file = file->private_data; |
| 2457 | if (cmd == OSS_GETVERSION) |
| 2458 | return put_user(SNDRV_OSS_VERSION, p); |
| 2459 | if (cmd == OSS_ALSAEMULVER) |
| 2460 | return put_user(1, p); |
| 2461 | #if defined(CONFIG_SND_MIXER_OSS) || (defined(MODULE) && defined(CONFIG_SND_MIXER_OSS_MODULE)) |
| 2462 | if (((cmd >> 8) & 0xff) == 'M') { /* mixer ioctl - for OSS compatibility */ |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2463 | struct snd_pcm_substream *substream; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2464 | int idx; |
| 2465 | for (idx = 0; idx < 2; ++idx) { |
| 2466 | substream = pcm_oss_file->streams[idx]; |
| 2467 | if (substream != NULL) |
| 2468 | break; |
| 2469 | } |
Takashi Iwai | 7eaa943 | 2008-08-08 17:09:09 +0200 | [diff] [blame] | 2470 | if (snd_BUG_ON(idx >= 2)) |
| 2471 | return -ENXIO; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2472 | return snd_mixer_oss_ioctl_card(substream->pcm->card, cmd, arg); |
| 2473 | } |
| 2474 | #endif |
| 2475 | if (((cmd >> 8) & 0xff) != 'P') |
| 2476 | return -EINVAL; |
| 2477 | #ifdef OSS_DEBUG |
| 2478 | printk("pcm_oss: ioctl = 0x%x\n", cmd); |
| 2479 | #endif |
| 2480 | switch (cmd) { |
| 2481 | case SNDCTL_DSP_RESET: |
| 2482 | return snd_pcm_oss_reset(pcm_oss_file); |
| 2483 | case SNDCTL_DSP_SYNC: |
| 2484 | return snd_pcm_oss_sync(pcm_oss_file); |
| 2485 | case SNDCTL_DSP_SPEED: |
| 2486 | if (get_user(res, p)) |
| 2487 | return -EFAULT; |
| 2488 | if ((res = snd_pcm_oss_set_rate(pcm_oss_file, res))<0) |
| 2489 | return res; |
| 2490 | return put_user(res, p); |
| 2491 | case SOUND_PCM_READ_RATE: |
| 2492 | res = snd_pcm_oss_get_rate(pcm_oss_file); |
| 2493 | if (res < 0) |
| 2494 | return res; |
| 2495 | return put_user(res, p); |
| 2496 | case SNDCTL_DSP_STEREO: |
| 2497 | if (get_user(res, p)) |
| 2498 | return -EFAULT; |
| 2499 | res = res > 0 ? 2 : 1; |
| 2500 | if ((res = snd_pcm_oss_set_channels(pcm_oss_file, res)) < 0) |
| 2501 | return res; |
| 2502 | return put_user(--res, p); |
| 2503 | case SNDCTL_DSP_GETBLKSIZE: |
| 2504 | res = snd_pcm_oss_get_block_size(pcm_oss_file); |
| 2505 | if (res < 0) |
| 2506 | return res; |
| 2507 | return put_user(res, p); |
| 2508 | case SNDCTL_DSP_SETFMT: |
| 2509 | if (get_user(res, p)) |
| 2510 | return -EFAULT; |
| 2511 | res = snd_pcm_oss_set_format(pcm_oss_file, res); |
| 2512 | if (res < 0) |
| 2513 | return res; |
| 2514 | return put_user(res, p); |
| 2515 | case SOUND_PCM_READ_BITS: |
| 2516 | res = snd_pcm_oss_get_format(pcm_oss_file); |
| 2517 | if (res < 0) |
| 2518 | return res; |
| 2519 | return put_user(res, p); |
| 2520 | case SNDCTL_DSP_CHANNELS: |
| 2521 | if (get_user(res, p)) |
| 2522 | return -EFAULT; |
| 2523 | res = snd_pcm_oss_set_channels(pcm_oss_file, res); |
| 2524 | if (res < 0) |
| 2525 | return res; |
| 2526 | return put_user(res, p); |
| 2527 | case SOUND_PCM_READ_CHANNELS: |
| 2528 | res = snd_pcm_oss_get_channels(pcm_oss_file); |
| 2529 | if (res < 0) |
| 2530 | return res; |
| 2531 | return put_user(res, p); |
| 2532 | case SOUND_PCM_WRITE_FILTER: |
| 2533 | case SOUND_PCM_READ_FILTER: |
| 2534 | return -EIO; |
| 2535 | case SNDCTL_DSP_POST: |
| 2536 | return snd_pcm_oss_post(pcm_oss_file); |
| 2537 | case SNDCTL_DSP_SUBDIVIDE: |
| 2538 | if (get_user(res, p)) |
| 2539 | return -EFAULT; |
| 2540 | res = snd_pcm_oss_set_subdivide(pcm_oss_file, res); |
| 2541 | if (res < 0) |
| 2542 | return res; |
| 2543 | return put_user(res, p); |
| 2544 | case SNDCTL_DSP_SETFRAGMENT: |
| 2545 | if (get_user(res, p)) |
| 2546 | return -EFAULT; |
| 2547 | return snd_pcm_oss_set_fragment(pcm_oss_file, res); |
| 2548 | case SNDCTL_DSP_GETFMTS: |
| 2549 | res = snd_pcm_oss_get_formats(pcm_oss_file); |
| 2550 | if (res < 0) |
| 2551 | return res; |
| 2552 | return put_user(res, p); |
| 2553 | case SNDCTL_DSP_GETOSPACE: |
| 2554 | case SNDCTL_DSP_GETISPACE: |
| 2555 | return snd_pcm_oss_get_space(pcm_oss_file, |
| 2556 | cmd == SNDCTL_DSP_GETISPACE ? |
| 2557 | SNDRV_PCM_STREAM_CAPTURE : SNDRV_PCM_STREAM_PLAYBACK, |
| 2558 | (struct audio_buf_info __user *) arg); |
| 2559 | case SNDCTL_DSP_NONBLOCK: |
| 2560 | return snd_pcm_oss_nonblock(file); |
| 2561 | case SNDCTL_DSP_GETCAPS: |
| 2562 | res = snd_pcm_oss_get_caps(pcm_oss_file); |
| 2563 | if (res < 0) |
| 2564 | return res; |
| 2565 | return put_user(res, p); |
| 2566 | case SNDCTL_DSP_GETTRIGGER: |
| 2567 | res = snd_pcm_oss_get_trigger(pcm_oss_file); |
| 2568 | if (res < 0) |
| 2569 | return res; |
| 2570 | return put_user(res, p); |
| 2571 | case SNDCTL_DSP_SETTRIGGER: |
| 2572 | if (get_user(res, p)) |
| 2573 | return -EFAULT; |
| 2574 | return snd_pcm_oss_set_trigger(pcm_oss_file, res); |
| 2575 | case SNDCTL_DSP_GETIPTR: |
| 2576 | case SNDCTL_DSP_GETOPTR: |
| 2577 | return snd_pcm_oss_get_ptr(pcm_oss_file, |
| 2578 | cmd == SNDCTL_DSP_GETIPTR ? |
| 2579 | SNDRV_PCM_STREAM_CAPTURE : SNDRV_PCM_STREAM_PLAYBACK, |
| 2580 | (struct count_info __user *) arg); |
| 2581 | case SNDCTL_DSP_MAPINBUF: |
| 2582 | case SNDCTL_DSP_MAPOUTBUF: |
| 2583 | return snd_pcm_oss_get_mapbuf(pcm_oss_file, |
| 2584 | cmd == SNDCTL_DSP_MAPINBUF ? |
| 2585 | SNDRV_PCM_STREAM_CAPTURE : SNDRV_PCM_STREAM_PLAYBACK, |
| 2586 | (struct buffmem_desc __user *) arg); |
| 2587 | case SNDCTL_DSP_SETSYNCRO: |
| 2588 | /* stop DMA now.. */ |
| 2589 | return 0; |
| 2590 | case SNDCTL_DSP_SETDUPLEX: |
| 2591 | if (snd_pcm_oss_get_caps(pcm_oss_file) & DSP_CAP_DUPLEX) |
| 2592 | return 0; |
| 2593 | return -EIO; |
| 2594 | case SNDCTL_DSP_GETODELAY: |
| 2595 | res = snd_pcm_oss_get_odelay(pcm_oss_file); |
| 2596 | if (res < 0) { |
| 2597 | /* it's for sure, some broken apps don't check for error codes */ |
| 2598 | put_user(0, p); |
| 2599 | return res; |
| 2600 | } |
| 2601 | return put_user(res, p); |
| 2602 | case SNDCTL_DSP_PROFILE: |
| 2603 | return 0; /* silently ignore */ |
| 2604 | default: |
| 2605 | snd_printd("pcm_oss: unknown command = 0x%x\n", cmd); |
| 2606 | } |
| 2607 | return -EINVAL; |
| 2608 | } |
| 2609 | |
| 2610 | #ifdef CONFIG_COMPAT |
| 2611 | /* all compatible */ |
| 2612 | #define snd_pcm_oss_ioctl_compat snd_pcm_oss_ioctl |
| 2613 | #else |
| 2614 | #define snd_pcm_oss_ioctl_compat NULL |
| 2615 | #endif |
| 2616 | |
| 2617 | static ssize_t snd_pcm_oss_read(struct file *file, char __user *buf, size_t count, loff_t *offset) |
| 2618 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2619 | struct snd_pcm_oss_file *pcm_oss_file; |
| 2620 | struct snd_pcm_substream *substream; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2621 | |
| 2622 | pcm_oss_file = file->private_data; |
| 2623 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE]; |
| 2624 | if (substream == NULL) |
| 2625 | return -ENXIO; |
Takashi Iwai | 0df63e4 | 2006-04-28 15:13:41 +0200 | [diff] [blame] | 2626 | substream->f_flags = file->f_flags & O_NONBLOCK; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2627 | #ifndef OSS_DEBUG |
| 2628 | return snd_pcm_oss_read1(substream, buf, count); |
| 2629 | #else |
| 2630 | { |
| 2631 | ssize_t res = snd_pcm_oss_read1(substream, buf, count); |
| 2632 | printk("pcm_oss: read %li bytes (returned %li bytes)\n", (long)count, (long)res); |
| 2633 | return res; |
| 2634 | } |
| 2635 | #endif |
| 2636 | } |
| 2637 | |
| 2638 | static ssize_t snd_pcm_oss_write(struct file *file, const char __user *buf, size_t count, loff_t *offset) |
| 2639 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2640 | struct snd_pcm_oss_file *pcm_oss_file; |
| 2641 | struct snd_pcm_substream *substream; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2642 | long result; |
| 2643 | |
| 2644 | pcm_oss_file = file->private_data; |
| 2645 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK]; |
| 2646 | if (substream == NULL) |
| 2647 | return -ENXIO; |
Takashi Iwai | 0df63e4 | 2006-04-28 15:13:41 +0200 | [diff] [blame] | 2648 | substream->f_flags = file->f_flags & O_NONBLOCK; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2649 | result = snd_pcm_oss_write1(substream, buf, count); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2650 | #ifdef OSS_DEBUG |
| 2651 | printk("pcm_oss: write %li bytes (wrote %li bytes)\n", (long)count, (long)result); |
| 2652 | #endif |
| 2653 | return result; |
| 2654 | } |
| 2655 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2656 | static int snd_pcm_oss_playback_ready(struct snd_pcm_substream *substream) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2657 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2658 | struct snd_pcm_runtime *runtime = substream->runtime; |
Takashi Iwai | 9c323fc | 2006-04-28 15:13:41 +0200 | [diff] [blame] | 2659 | if (atomic_read(&substream->mmap_count)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2660 | return runtime->oss.prev_hw_ptr_interrupt != runtime->hw_ptr_interrupt; |
| 2661 | else |
| 2662 | return snd_pcm_playback_avail(runtime) >= runtime->oss.period_frames; |
| 2663 | } |
| 2664 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2665 | static int snd_pcm_oss_capture_ready(struct snd_pcm_substream *substream) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2666 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2667 | struct snd_pcm_runtime *runtime = substream->runtime; |
Takashi Iwai | 9c323fc | 2006-04-28 15:13:41 +0200 | [diff] [blame] | 2668 | if (atomic_read(&substream->mmap_count)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2669 | return runtime->oss.prev_hw_ptr_interrupt != runtime->hw_ptr_interrupt; |
| 2670 | else |
| 2671 | return snd_pcm_capture_avail(runtime) >= runtime->oss.period_frames; |
| 2672 | } |
| 2673 | |
| 2674 | static unsigned int snd_pcm_oss_poll(struct file *file, poll_table * wait) |
| 2675 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2676 | struct snd_pcm_oss_file *pcm_oss_file; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2677 | unsigned int mask; |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2678 | struct snd_pcm_substream *psubstream = NULL, *csubstream = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2679 | |
| 2680 | pcm_oss_file = file->private_data; |
| 2681 | |
| 2682 | psubstream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK]; |
| 2683 | csubstream = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE]; |
| 2684 | |
| 2685 | mask = 0; |
| 2686 | if (psubstream != NULL) { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2687 | struct snd_pcm_runtime *runtime = psubstream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2688 | poll_wait(file, &runtime->sleep, wait); |
| 2689 | snd_pcm_stream_lock_irq(psubstream); |
| 2690 | if (runtime->status->state != SNDRV_PCM_STATE_DRAINING && |
| 2691 | (runtime->status->state != SNDRV_PCM_STATE_RUNNING || |
| 2692 | snd_pcm_oss_playback_ready(psubstream))) |
| 2693 | mask |= POLLOUT | POLLWRNORM; |
| 2694 | snd_pcm_stream_unlock_irq(psubstream); |
| 2695 | } |
| 2696 | if (csubstream != NULL) { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2697 | struct snd_pcm_runtime *runtime = csubstream->runtime; |
| 2698 | snd_pcm_state_t ostate; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2699 | poll_wait(file, &runtime->sleep, wait); |
| 2700 | snd_pcm_stream_lock_irq(csubstream); |
| 2701 | if ((ostate = runtime->status->state) != SNDRV_PCM_STATE_RUNNING || |
| 2702 | snd_pcm_oss_capture_ready(csubstream)) |
| 2703 | mask |= POLLIN | POLLRDNORM; |
| 2704 | snd_pcm_stream_unlock_irq(csubstream); |
| 2705 | if (ostate != SNDRV_PCM_STATE_RUNNING && runtime->oss.trigger) { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2706 | struct snd_pcm_oss_file ofile; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2707 | memset(&ofile, 0, sizeof(ofile)); |
| 2708 | ofile.streams[SNDRV_PCM_STREAM_CAPTURE] = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE]; |
| 2709 | runtime->oss.trigger = 0; |
| 2710 | snd_pcm_oss_set_trigger(&ofile, PCM_ENABLE_INPUT); |
| 2711 | } |
| 2712 | } |
| 2713 | |
| 2714 | return mask; |
| 2715 | } |
| 2716 | |
| 2717 | static int snd_pcm_oss_mmap(struct file *file, struct vm_area_struct *area) |
| 2718 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2719 | struct snd_pcm_oss_file *pcm_oss_file; |
| 2720 | struct snd_pcm_substream *substream = NULL; |
| 2721 | struct snd_pcm_runtime *runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2722 | int err; |
| 2723 | |
| 2724 | #ifdef OSS_DEBUG |
| 2725 | printk("pcm_oss: mmap begin\n"); |
| 2726 | #endif |
| 2727 | pcm_oss_file = file->private_data; |
| 2728 | switch ((area->vm_flags & (VM_READ | VM_WRITE))) { |
| 2729 | case VM_READ | VM_WRITE: |
| 2730 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK]; |
| 2731 | if (substream) |
| 2732 | break; |
| 2733 | /* Fall through */ |
| 2734 | case VM_READ: |
| 2735 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE]; |
| 2736 | break; |
| 2737 | case VM_WRITE: |
| 2738 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK]; |
| 2739 | break; |
| 2740 | default: |
| 2741 | return -EINVAL; |
| 2742 | } |
| 2743 | /* set VM_READ access as well to fix memset() routines that do |
| 2744 | reads before writes (to improve performance) */ |
| 2745 | area->vm_flags |= VM_READ; |
| 2746 | if (substream == NULL) |
| 2747 | return -ENXIO; |
| 2748 | runtime = substream->runtime; |
| 2749 | if (!(runtime->info & SNDRV_PCM_INFO_MMAP_VALID)) |
| 2750 | return -EIO; |
| 2751 | if (runtime->info & SNDRV_PCM_INFO_INTERLEAVED) |
| 2752 | runtime->access = SNDRV_PCM_ACCESS_MMAP_INTERLEAVED; |
| 2753 | else |
| 2754 | return -EIO; |
| 2755 | |
| 2756 | if (runtime->oss.params) { |
| 2757 | if ((err = snd_pcm_oss_change_params(substream)) < 0) |
| 2758 | return err; |
| 2759 | } |
Jaroslav Kysela | 21a3479 | 2006-01-13 09:12:11 +0100 | [diff] [blame] | 2760 | #ifdef CONFIG_SND_PCM_OSS_PLUGINS |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2761 | if (runtime->oss.plugin_first != NULL) |
| 2762 | return -EIO; |
Jaroslav Kysela | 21a3479 | 2006-01-13 09:12:11 +0100 | [diff] [blame] | 2763 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2764 | |
| 2765 | if (area->vm_pgoff != 0) |
| 2766 | return -EINVAL; |
| 2767 | |
| 2768 | err = snd_pcm_mmap_data(substream, file, area); |
| 2769 | if (err < 0) |
| 2770 | return err; |
| 2771 | runtime->oss.mmap_bytes = area->vm_end - area->vm_start; |
| 2772 | runtime->silence_threshold = 0; |
| 2773 | runtime->silence_size = 0; |
| 2774 | #ifdef OSS_DEBUG |
| 2775 | printk("pcm_oss: mmap ok, bytes = 0x%x\n", runtime->oss.mmap_bytes); |
| 2776 | #endif |
| 2777 | /* In mmap mode we never stop */ |
| 2778 | runtime->stop_threshold = runtime->boundary; |
| 2779 | |
| 2780 | return 0; |
| 2781 | } |
| 2782 | |
Takashi Iwai | b7d90a3 | 2006-04-25 12:56:04 +0200 | [diff] [blame] | 2783 | #ifdef CONFIG_SND_VERBOSE_PROCFS |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2784 | /* |
| 2785 | * /proc interface |
| 2786 | */ |
| 2787 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2788 | static void snd_pcm_oss_proc_read(struct snd_info_entry *entry, |
| 2789 | struct snd_info_buffer *buffer) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2790 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2791 | struct snd_pcm_str *pstr = entry->private_data; |
| 2792 | struct snd_pcm_oss_setup *setup = pstr->oss.setup_list; |
Ingo Molnar | 1a60d4c | 2006-01-16 16:29:08 +0100 | [diff] [blame] | 2793 | mutex_lock(&pstr->oss.setup_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2794 | while (setup) { |
| 2795 | snd_iprintf(buffer, "%s %u %u%s%s%s%s%s%s\n", |
| 2796 | setup->task_name, |
| 2797 | setup->periods, |
| 2798 | setup->period_size, |
| 2799 | setup->disable ? " disable" : "", |
| 2800 | setup->direct ? " direct" : "", |
| 2801 | setup->block ? " block" : "", |
| 2802 | setup->nonblock ? " non-block" : "", |
| 2803 | setup->partialfrag ? " partial-frag" : "", |
| 2804 | setup->nosilence ? " no-silence" : ""); |
| 2805 | setup = setup->next; |
| 2806 | } |
Ingo Molnar | 1a60d4c | 2006-01-16 16:29:08 +0100 | [diff] [blame] | 2807 | mutex_unlock(&pstr->oss.setup_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2808 | } |
| 2809 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2810 | 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] | 2811 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2812 | struct snd_pcm_oss_setup *setup, *setupn; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2813 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2814 | for (setup = pstr->oss.setup_list, pstr->oss.setup_list = NULL; |
| 2815 | setup; setup = setupn) { |
| 2816 | setupn = setup->next; |
| 2817 | kfree(setup->task_name); |
| 2818 | kfree(setup); |
| 2819 | } |
| 2820 | pstr->oss.setup_list = NULL; |
| 2821 | } |
| 2822 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2823 | static void snd_pcm_oss_proc_write(struct snd_info_entry *entry, |
| 2824 | struct snd_info_buffer *buffer) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2825 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2826 | struct snd_pcm_str *pstr = entry->private_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2827 | char line[128], str[32], task_name[32], *ptr; |
| 2828 | int idx1; |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2829 | struct snd_pcm_oss_setup *setup, *setup1, template; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2830 | |
| 2831 | while (!snd_info_get_line(buffer, line, sizeof(line))) { |
Ingo Molnar | 1a60d4c | 2006-01-16 16:29:08 +0100 | [diff] [blame] | 2832 | mutex_lock(&pstr->oss.setup_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2833 | memset(&template, 0, sizeof(template)); |
| 2834 | ptr = snd_info_get_str(task_name, line, sizeof(task_name)); |
| 2835 | if (!strcmp(task_name, "clear") || !strcmp(task_name, "erase")) { |
| 2836 | snd_pcm_oss_proc_free_setup_list(pstr); |
Ingo Molnar | 1a60d4c | 2006-01-16 16:29:08 +0100 | [diff] [blame] | 2837 | mutex_unlock(&pstr->oss.setup_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2838 | continue; |
| 2839 | } |
| 2840 | for (setup = pstr->oss.setup_list; setup; setup = setup->next) { |
| 2841 | if (!strcmp(setup->task_name, task_name)) { |
| 2842 | template = *setup; |
| 2843 | break; |
| 2844 | } |
| 2845 | } |
| 2846 | ptr = snd_info_get_str(str, ptr, sizeof(str)); |
| 2847 | template.periods = simple_strtoul(str, NULL, 10); |
| 2848 | ptr = snd_info_get_str(str, ptr, sizeof(str)); |
| 2849 | template.period_size = simple_strtoul(str, NULL, 10); |
| 2850 | for (idx1 = 31; idx1 >= 0; idx1--) |
| 2851 | if (template.period_size & (1 << idx1)) |
| 2852 | break; |
| 2853 | for (idx1--; idx1 >= 0; idx1--) |
| 2854 | template.period_size &= ~(1 << idx1); |
| 2855 | do { |
| 2856 | ptr = snd_info_get_str(str, ptr, sizeof(str)); |
| 2857 | if (!strcmp(str, "disable")) { |
| 2858 | template.disable = 1; |
| 2859 | } else if (!strcmp(str, "direct")) { |
| 2860 | template.direct = 1; |
| 2861 | } else if (!strcmp(str, "block")) { |
| 2862 | template.block = 1; |
| 2863 | } else if (!strcmp(str, "non-block")) { |
| 2864 | template.nonblock = 1; |
| 2865 | } else if (!strcmp(str, "partial-frag")) { |
| 2866 | template.partialfrag = 1; |
| 2867 | } else if (!strcmp(str, "no-silence")) { |
| 2868 | template.nosilence = 1; |
Takashi Iwai | 10f69f9 | 2005-09-08 13:48:34 +0200 | [diff] [blame] | 2869 | } else if (!strcmp(str, "buggy-ptr")) { |
| 2870 | template.buggyptr = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2871 | } |
| 2872 | } while (*str); |
| 2873 | if (setup == NULL) { |
Takashi Iwai | 060d77b | 2006-03-27 16:44:52 +0200 | [diff] [blame] | 2874 | setup = kmalloc(sizeof(*setup), GFP_KERNEL); |
| 2875 | if (! setup) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2876 | buffer->error = -ENOMEM; |
Takashi Iwai | 060d77b | 2006-03-27 16:44:52 +0200 | [diff] [blame] | 2877 | mutex_lock(&pstr->oss.setup_mutex); |
| 2878 | return; |
| 2879 | } |
| 2880 | if (pstr->oss.setup_list == NULL) |
| 2881 | pstr->oss.setup_list = setup; |
| 2882 | else { |
| 2883 | for (setup1 = pstr->oss.setup_list; |
| 2884 | setup1->next; setup1 = setup1->next); |
| 2885 | setup1->next = setup; |
| 2886 | } |
| 2887 | template.task_name = kstrdup(task_name, GFP_KERNEL); |
| 2888 | if (! template.task_name) { |
| 2889 | kfree(setup); |
| 2890 | buffer->error = -ENOMEM; |
| 2891 | mutex_lock(&pstr->oss.setup_mutex); |
| 2892 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2893 | } |
| 2894 | } |
Takashi Iwai | 060d77b | 2006-03-27 16:44:52 +0200 | [diff] [blame] | 2895 | *setup = template; |
Ingo Molnar | 1a60d4c | 2006-01-16 16:29:08 +0100 | [diff] [blame] | 2896 | mutex_unlock(&pstr->oss.setup_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2897 | } |
| 2898 | } |
| 2899 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2900 | static void snd_pcm_oss_proc_init(struct snd_pcm *pcm) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2901 | { |
| 2902 | int stream; |
| 2903 | for (stream = 0; stream < 2; ++stream) { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2904 | struct snd_info_entry *entry; |
| 2905 | struct snd_pcm_str *pstr = &pcm->streams[stream]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2906 | if (pstr->substream_count == 0) |
| 2907 | continue; |
| 2908 | if ((entry = snd_info_create_card_entry(pcm->card, "oss", pstr->proc_root)) != NULL) { |
| 2909 | entry->content = SNDRV_INFO_CONTENT_TEXT; |
| 2910 | entry->mode = S_IFREG | S_IRUGO | S_IWUSR; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2911 | entry->c.text.read = snd_pcm_oss_proc_read; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2912 | entry->c.text.write = snd_pcm_oss_proc_write; |
| 2913 | entry->private_data = pstr; |
| 2914 | if (snd_info_register(entry) < 0) { |
| 2915 | snd_info_free_entry(entry); |
| 2916 | entry = NULL; |
| 2917 | } |
| 2918 | } |
| 2919 | pstr->oss.proc_entry = entry; |
| 2920 | } |
| 2921 | } |
| 2922 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2923 | static void snd_pcm_oss_proc_done(struct snd_pcm *pcm) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2924 | { |
| 2925 | int stream; |
| 2926 | for (stream = 0; stream < 2; ++stream) { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2927 | struct snd_pcm_str *pstr = &pcm->streams[stream]; |
Takashi Iwai | 746d4a0 | 2006-06-23 14:37:59 +0200 | [diff] [blame] | 2928 | snd_info_free_entry(pstr->oss.proc_entry); |
| 2929 | pstr->oss.proc_entry = NULL; |
| 2930 | snd_pcm_oss_proc_free_setup_list(pstr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2931 | } |
| 2932 | } |
Takashi Iwai | b7d90a3 | 2006-04-25 12:56:04 +0200 | [diff] [blame] | 2933 | #else /* !CONFIG_SND_VERBOSE_PROCFS */ |
Takashi Iwai | 04f141a | 2005-12-01 10:43:51 +0100 | [diff] [blame] | 2934 | #define snd_pcm_oss_proc_init(pcm) |
| 2935 | #define snd_pcm_oss_proc_done(pcm) |
Takashi Iwai | b7d90a3 | 2006-04-25 12:56:04 +0200 | [diff] [blame] | 2936 | #endif /* CONFIG_SND_VERBOSE_PROCFS */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2937 | |
| 2938 | /* |
| 2939 | * ENTRY functions |
| 2940 | */ |
| 2941 | |
Arjan van de Ven | 9c2e08c | 2007-02-12 00:55:37 -0800 | [diff] [blame] | 2942 | static const struct file_operations snd_pcm_oss_f_reg = |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2943 | { |
| 2944 | .owner = THIS_MODULE, |
| 2945 | .read = snd_pcm_oss_read, |
| 2946 | .write = snd_pcm_oss_write, |
| 2947 | .open = snd_pcm_oss_open, |
| 2948 | .release = snd_pcm_oss_release, |
| 2949 | .poll = snd_pcm_oss_poll, |
| 2950 | .unlocked_ioctl = snd_pcm_oss_ioctl, |
| 2951 | .compat_ioctl = snd_pcm_oss_ioctl_compat, |
| 2952 | .mmap = snd_pcm_oss_mmap, |
| 2953 | }; |
| 2954 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2955 | static void register_oss_dsp(struct snd_pcm *pcm, int index) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2956 | { |
| 2957 | char name[128]; |
| 2958 | sprintf(name, "dsp%i%i", pcm->card->number, pcm->device); |
| 2959 | if (snd_register_oss_device(SNDRV_OSS_DEVICE_TYPE_PCM, |
Clemens Ladisch | 2af677f | 2005-11-20 14:03:48 +0100 | [diff] [blame] | 2960 | pcm->card, index, &snd_pcm_oss_f_reg, |
Clemens Ladisch | f87135f | 2005-11-20 14:06:59 +0100 | [diff] [blame] | 2961 | pcm, name) < 0) { |
Takashi Iwai | d3d579f | 2005-10-21 16:20:11 +0200 | [diff] [blame] | 2962 | snd_printk(KERN_ERR "unable to register OSS PCM device %i:%i\n", |
| 2963 | pcm->card->number, pcm->device); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2964 | } |
| 2965 | } |
| 2966 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2967 | static int snd_pcm_oss_register_minor(struct snd_pcm *pcm) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2968 | { |
| 2969 | pcm->oss.reg = 0; |
Jaroslav Kysela | 896e6cc | 2008-08-01 13:36:04 +0200 | [diff] [blame] | 2970 | if (dsp_map[pcm->card->number] == (int)pcm->device) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2971 | char name[128]; |
| 2972 | int duplex; |
| 2973 | register_oss_dsp(pcm, 0); |
| 2974 | duplex = (pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream_count > 0 && |
| 2975 | pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream_count && |
| 2976 | !(pcm->info_flags & SNDRV_PCM_INFO_HALF_DUPLEX)); |
| 2977 | sprintf(name, "%s%s", pcm->name, duplex ? " (DUPLEX)" : ""); |
| 2978 | #ifdef SNDRV_OSS_INFO_DEV_AUDIO |
| 2979 | snd_oss_info_register(SNDRV_OSS_INFO_DEV_AUDIO, |
| 2980 | pcm->card->number, |
| 2981 | name); |
| 2982 | #endif |
| 2983 | pcm->oss.reg++; |
| 2984 | pcm->oss.reg_mask |= 1; |
| 2985 | } |
Jaroslav Kysela | 896e6cc | 2008-08-01 13:36:04 +0200 | [diff] [blame] | 2986 | if (adsp_map[pcm->card->number] == (int)pcm->device) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2987 | register_oss_dsp(pcm, 1); |
| 2988 | pcm->oss.reg++; |
| 2989 | pcm->oss.reg_mask |= 2; |
| 2990 | } |
| 2991 | |
| 2992 | if (pcm->oss.reg) |
| 2993 | snd_pcm_oss_proc_init(pcm); |
| 2994 | |
| 2995 | return 0; |
| 2996 | } |
| 2997 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2998 | static int snd_pcm_oss_disconnect_minor(struct snd_pcm *pcm) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2999 | { |
| 3000 | if (pcm->oss.reg) { |
| 3001 | if (pcm->oss.reg_mask & 1) { |
| 3002 | pcm->oss.reg_mask &= ~1; |
| 3003 | snd_unregister_oss_device(SNDRV_OSS_DEVICE_TYPE_PCM, |
| 3004 | pcm->card, 0); |
| 3005 | } |
| 3006 | if (pcm->oss.reg_mask & 2) { |
| 3007 | pcm->oss.reg_mask &= ~2; |
| 3008 | snd_unregister_oss_device(SNDRV_OSS_DEVICE_TYPE_PCM, |
| 3009 | pcm->card, 1); |
| 3010 | } |
Jaroslav Kysela | 896e6cc | 2008-08-01 13:36:04 +0200 | [diff] [blame] | 3011 | if (dsp_map[pcm->card->number] == (int)pcm->device) { |
Takashi Iwai | c461482 | 2006-06-23 14:38:23 +0200 | [diff] [blame] | 3012 | #ifdef SNDRV_OSS_INFO_DEV_AUDIO |
| 3013 | snd_oss_info_unregister(SNDRV_OSS_INFO_DEV_AUDIO, pcm->card->number); |
| 3014 | #endif |
| 3015 | } |
| 3016 | pcm->oss.reg = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3017 | } |
| 3018 | return 0; |
| 3019 | } |
| 3020 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 3021 | static int snd_pcm_oss_unregister_minor(struct snd_pcm *pcm) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3022 | { |
| 3023 | snd_pcm_oss_disconnect_minor(pcm); |
Takashi Iwai | c461482 | 2006-06-23 14:38:23 +0200 | [diff] [blame] | 3024 | snd_pcm_oss_proc_done(pcm); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3025 | return 0; |
| 3026 | } |
| 3027 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 3028 | static struct snd_pcm_notify snd_pcm_oss_notify = |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3029 | { |
| 3030 | .n_register = snd_pcm_oss_register_minor, |
| 3031 | .n_disconnect = snd_pcm_oss_disconnect_minor, |
| 3032 | .n_unregister = snd_pcm_oss_unregister_minor, |
| 3033 | }; |
| 3034 | |
| 3035 | static int __init alsa_pcm_oss_init(void) |
| 3036 | { |
| 3037 | int i; |
| 3038 | int err; |
| 3039 | |
| 3040 | /* check device map table */ |
| 3041 | for (i = 0; i < SNDRV_CARDS; i++) { |
Jaroslav Kysela | 896e6cc | 2008-08-01 13:36:04 +0200 | [diff] [blame] | 3042 | if (dsp_map[i] < 0 || dsp_map[i] >= SNDRV_PCM_DEVICES) { |
Takashi Iwai | d3d579f | 2005-10-21 16:20:11 +0200 | [diff] [blame] | 3043 | snd_printk(KERN_ERR "invalid dsp_map[%d] = %d\n", |
| 3044 | i, dsp_map[i]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3045 | dsp_map[i] = 0; |
| 3046 | } |
Jaroslav Kysela | 896e6cc | 2008-08-01 13:36:04 +0200 | [diff] [blame] | 3047 | if (adsp_map[i] < 0 || adsp_map[i] >= SNDRV_PCM_DEVICES) { |
Takashi Iwai | d3d579f | 2005-10-21 16:20:11 +0200 | [diff] [blame] | 3048 | snd_printk(KERN_ERR "invalid adsp_map[%d] = %d\n", |
| 3049 | i, adsp_map[i]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3050 | adsp_map[i] = 1; |
| 3051 | } |
| 3052 | } |
| 3053 | if ((err = snd_pcm_notify(&snd_pcm_oss_notify, 0)) < 0) |
| 3054 | return err; |
| 3055 | return 0; |
| 3056 | } |
| 3057 | |
| 3058 | static void __exit alsa_pcm_oss_exit(void) |
| 3059 | { |
| 3060 | snd_pcm_notify(&snd_pcm_oss_notify, 1); |
| 3061 | } |
| 3062 | |
| 3063 | module_init(alsa_pcm_oss_init) |
| 3064 | module_exit(alsa_pcm_oss_exit) |