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> |
Paul Gortmaker | 65a7721 | 2011-07-15 13:13:37 -0400 | [diff] [blame] | 33 | #include <linux/module.h> |
Takashi Iwai | 3f7440a | 2009-06-05 17:40:04 +0200 | [diff] [blame] | 34 | #include <linux/math64.h> |
Paulo Marques | 543537b | 2005-06-23 00:09:02 -0700 | [diff] [blame] | 35 | #include <linux/string.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 36 | #include <sound/core.h> |
| 37 | #include <sound/minors.h> |
| 38 | #include <sound/pcm.h> |
| 39 | #include <sound/pcm_params.h> |
| 40 | #include "pcm_plugin.h" |
| 41 | #include <sound/info.h> |
| 42 | #include <linux/soundcard.h> |
| 43 | #include <sound/initval.h> |
Clemens Ladisch | fea952e | 2011-02-14 11:00:47 +0100 | [diff] [blame] | 44 | #include <sound/mixer_oss.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 45 | |
| 46 | #define OSS_ALSAEMULVER _SIOR ('M', 249, int) |
| 47 | |
Takashi Iwai | 6581f4e | 2006-05-17 17:14:51 +0200 | [diff] [blame] | 48 | static int dsp_map[SNDRV_CARDS]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 49 | static int adsp_map[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS-1)] = 1}; |
| 50 | static int nonblock_open = 1; |
| 51 | |
Jaroslav Kysela | c1017a4 | 2007-10-15 09:50:19 +0200 | [diff] [blame] | 52 | 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] | 53 | MODULE_DESCRIPTION("PCM OSS emulation for ALSA."); |
| 54 | MODULE_LICENSE("GPL"); |
| 55 | module_param_array(dsp_map, int, NULL, 0444); |
| 56 | MODULE_PARM_DESC(dsp_map, "PCM device number assigned to 1st OSS device."); |
| 57 | module_param_array(adsp_map, int, NULL, 0444); |
| 58 | MODULE_PARM_DESC(adsp_map, "PCM device number assigned to 2nd OSS device."); |
| 59 | module_param(nonblock_open, bool, 0644); |
| 60 | MODULE_PARM_DESC(nonblock_open, "Don't block opening busy PCM devices."); |
| 61 | MODULE_ALIAS_SNDRV_MINOR(SNDRV_MINOR_OSS_PCM); |
| 62 | MODULE_ALIAS_SNDRV_MINOR(SNDRV_MINOR_OSS_PCM1); |
| 63 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 64 | static int snd_pcm_oss_get_rate(struct snd_pcm_oss_file *pcm_oss_file); |
| 65 | static int snd_pcm_oss_get_channels(struct snd_pcm_oss_file *pcm_oss_file); |
| 66 | static int snd_pcm_oss_get_format(struct snd_pcm_oss_file *pcm_oss_file); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 67 | |
| 68 | static inline mm_segment_t snd_enter_user(void) |
| 69 | { |
| 70 | mm_segment_t fs = get_fs(); |
| 71 | set_fs(get_ds()); |
| 72 | return fs; |
| 73 | } |
| 74 | |
| 75 | static inline void snd_leave_user(mm_segment_t fs) |
| 76 | { |
| 77 | set_fs(fs); |
| 78 | } |
| 79 | |
Takashi Iwai | e88e8ae6 | 2006-04-28 15:13:40 +0200 | [diff] [blame] | 80 | /* |
| 81 | * helper functions to process hw_params |
| 82 | */ |
| 83 | static int snd_interval_refine_min(struct snd_interval *i, unsigned int min, int openmin) |
| 84 | { |
| 85 | int changed = 0; |
| 86 | if (i->min < min) { |
| 87 | i->min = min; |
| 88 | i->openmin = openmin; |
| 89 | changed = 1; |
| 90 | } else if (i->min == min && !i->openmin && openmin) { |
| 91 | i->openmin = 1; |
| 92 | changed = 1; |
| 93 | } |
| 94 | if (i->integer) { |
| 95 | if (i->openmin) { |
| 96 | i->min++; |
| 97 | i->openmin = 0; |
| 98 | } |
| 99 | } |
| 100 | if (snd_interval_checkempty(i)) { |
| 101 | snd_interval_none(i); |
| 102 | return -EINVAL; |
| 103 | } |
| 104 | return changed; |
| 105 | } |
| 106 | |
| 107 | static int snd_interval_refine_max(struct snd_interval *i, unsigned int max, int openmax) |
| 108 | { |
| 109 | int changed = 0; |
| 110 | if (i->max > max) { |
| 111 | i->max = max; |
| 112 | i->openmax = openmax; |
| 113 | changed = 1; |
| 114 | } else if (i->max == max && !i->openmax && openmax) { |
| 115 | i->openmax = 1; |
| 116 | changed = 1; |
| 117 | } |
| 118 | if (i->integer) { |
| 119 | if (i->openmax) { |
| 120 | i->max--; |
| 121 | i->openmax = 0; |
| 122 | } |
| 123 | } |
| 124 | if (snd_interval_checkempty(i)) { |
| 125 | snd_interval_none(i); |
| 126 | return -EINVAL; |
| 127 | } |
| 128 | return changed; |
| 129 | } |
| 130 | |
| 131 | static int snd_interval_refine_set(struct snd_interval *i, unsigned int val) |
| 132 | { |
| 133 | struct snd_interval t; |
| 134 | t.empty = 0; |
| 135 | t.min = t.max = val; |
| 136 | t.openmin = t.openmax = 0; |
| 137 | t.integer = 1; |
| 138 | return snd_interval_refine(i, &t); |
| 139 | } |
| 140 | |
| 141 | /** |
| 142 | * snd_pcm_hw_param_value_min |
| 143 | * @params: the hw_params instance |
| 144 | * @var: parameter to retrieve |
| 145 | * @dir: pointer to the direction (-1,0,1) or NULL |
| 146 | * |
| 147 | * Return the minimum value for field PAR. |
| 148 | */ |
| 149 | static unsigned int |
| 150 | snd_pcm_hw_param_value_min(const struct snd_pcm_hw_params *params, |
| 151 | snd_pcm_hw_param_t var, int *dir) |
| 152 | { |
| 153 | if (hw_is_mask(var)) { |
| 154 | if (dir) |
| 155 | *dir = 0; |
| 156 | return snd_mask_min(hw_param_mask_c(params, var)); |
| 157 | } |
| 158 | if (hw_is_interval(var)) { |
| 159 | const struct snd_interval *i = hw_param_interval_c(params, var); |
| 160 | if (dir) |
| 161 | *dir = i->openmin; |
| 162 | return snd_interval_min(i); |
| 163 | } |
| 164 | return -EINVAL; |
| 165 | } |
| 166 | |
| 167 | /** |
| 168 | * snd_pcm_hw_param_value_max |
| 169 | * @params: the hw_params instance |
| 170 | * @var: parameter to retrieve |
| 171 | * @dir: pointer to the direction (-1,0,1) or NULL |
| 172 | * |
| 173 | * Return the maximum value for field PAR. |
| 174 | */ |
| 175 | static unsigned int |
| 176 | snd_pcm_hw_param_value_max(const struct snd_pcm_hw_params *params, |
| 177 | snd_pcm_hw_param_t var, int *dir) |
| 178 | { |
| 179 | if (hw_is_mask(var)) { |
| 180 | if (dir) |
| 181 | *dir = 0; |
| 182 | return snd_mask_max(hw_param_mask_c(params, var)); |
| 183 | } |
| 184 | if (hw_is_interval(var)) { |
| 185 | const struct snd_interval *i = hw_param_interval_c(params, var); |
| 186 | if (dir) |
| 187 | *dir = - (int) i->openmax; |
| 188 | return snd_interval_max(i); |
| 189 | } |
| 190 | return -EINVAL; |
| 191 | } |
| 192 | |
| 193 | static int _snd_pcm_hw_param_mask(struct snd_pcm_hw_params *params, |
| 194 | snd_pcm_hw_param_t var, |
| 195 | const struct snd_mask *val) |
| 196 | { |
| 197 | int changed; |
| 198 | changed = snd_mask_refine(hw_param_mask(params, var), val); |
| 199 | if (changed) { |
| 200 | params->cmask |= 1 << var; |
| 201 | params->rmask |= 1 << var; |
| 202 | } |
| 203 | return changed; |
| 204 | } |
| 205 | |
| 206 | static int snd_pcm_hw_param_mask(struct snd_pcm_substream *pcm, |
| 207 | struct snd_pcm_hw_params *params, |
| 208 | snd_pcm_hw_param_t var, |
| 209 | const struct snd_mask *val) |
| 210 | { |
| 211 | int changed = _snd_pcm_hw_param_mask(params, var, val); |
| 212 | if (changed < 0) |
| 213 | return changed; |
| 214 | if (params->rmask) { |
| 215 | int err = snd_pcm_hw_refine(pcm, params); |
| 216 | if (err < 0) |
| 217 | return err; |
| 218 | } |
| 219 | return 0; |
| 220 | } |
| 221 | |
| 222 | static int _snd_pcm_hw_param_min(struct snd_pcm_hw_params *params, |
| 223 | snd_pcm_hw_param_t var, unsigned int val, |
| 224 | int dir) |
| 225 | { |
| 226 | int changed; |
| 227 | int open = 0; |
| 228 | if (dir) { |
| 229 | if (dir > 0) { |
| 230 | open = 1; |
| 231 | } else if (dir < 0) { |
| 232 | if (val > 0) { |
| 233 | open = 1; |
| 234 | val--; |
| 235 | } |
| 236 | } |
| 237 | } |
| 238 | if (hw_is_mask(var)) |
| 239 | changed = snd_mask_refine_min(hw_param_mask(params, var), |
| 240 | val + !!open); |
| 241 | else if (hw_is_interval(var)) |
| 242 | changed = snd_interval_refine_min(hw_param_interval(params, var), |
| 243 | val, open); |
| 244 | else |
| 245 | return -EINVAL; |
| 246 | if (changed) { |
| 247 | params->cmask |= 1 << var; |
| 248 | params->rmask |= 1 << var; |
| 249 | } |
| 250 | return changed; |
| 251 | } |
| 252 | |
| 253 | /** |
| 254 | * snd_pcm_hw_param_min |
| 255 | * @pcm: PCM instance |
| 256 | * @params: the hw_params instance |
| 257 | * @var: parameter to retrieve |
| 258 | * @val: minimal value |
| 259 | * @dir: pointer to the direction (-1,0,1) or NULL |
| 260 | * |
| 261 | * Inside configuration space defined by PARAMS remove from PAR all |
| 262 | * values < VAL. Reduce configuration space accordingly. |
| 263 | * Return new minimum or -EINVAL if the configuration space is empty |
| 264 | */ |
| 265 | static int snd_pcm_hw_param_min(struct snd_pcm_substream *pcm, |
| 266 | struct snd_pcm_hw_params *params, |
| 267 | snd_pcm_hw_param_t var, unsigned int val, |
| 268 | int *dir) |
| 269 | { |
| 270 | int changed = _snd_pcm_hw_param_min(params, var, val, dir ? *dir : 0); |
| 271 | if (changed < 0) |
| 272 | return changed; |
| 273 | if (params->rmask) { |
| 274 | int err = snd_pcm_hw_refine(pcm, params); |
| 275 | if (err < 0) |
| 276 | return err; |
| 277 | } |
| 278 | return snd_pcm_hw_param_value_min(params, var, dir); |
| 279 | } |
| 280 | |
| 281 | static int _snd_pcm_hw_param_max(struct snd_pcm_hw_params *params, |
| 282 | snd_pcm_hw_param_t var, unsigned int val, |
| 283 | int dir) |
| 284 | { |
| 285 | int changed; |
| 286 | int open = 0; |
| 287 | if (dir) { |
| 288 | if (dir < 0) { |
| 289 | open = 1; |
| 290 | } else if (dir > 0) { |
| 291 | open = 1; |
| 292 | val++; |
| 293 | } |
| 294 | } |
| 295 | if (hw_is_mask(var)) { |
| 296 | if (val == 0 && open) { |
| 297 | snd_mask_none(hw_param_mask(params, var)); |
| 298 | changed = -EINVAL; |
| 299 | } else |
| 300 | changed = snd_mask_refine_max(hw_param_mask(params, var), |
| 301 | val - !!open); |
| 302 | } else if (hw_is_interval(var)) |
| 303 | changed = snd_interval_refine_max(hw_param_interval(params, var), |
| 304 | val, open); |
| 305 | else |
| 306 | return -EINVAL; |
| 307 | if (changed) { |
| 308 | params->cmask |= 1 << var; |
| 309 | params->rmask |= 1 << var; |
| 310 | } |
| 311 | return changed; |
| 312 | } |
| 313 | |
| 314 | /** |
| 315 | * snd_pcm_hw_param_max |
| 316 | * @pcm: PCM instance |
| 317 | * @params: the hw_params instance |
| 318 | * @var: parameter to retrieve |
| 319 | * @val: maximal value |
| 320 | * @dir: pointer to the direction (-1,0,1) or NULL |
| 321 | * |
| 322 | * Inside configuration space defined by PARAMS remove from PAR all |
| 323 | * values >= VAL + 1. Reduce configuration space accordingly. |
| 324 | * Return new maximum or -EINVAL if the configuration space is empty |
| 325 | */ |
| 326 | static int snd_pcm_hw_param_max(struct snd_pcm_substream *pcm, |
| 327 | struct snd_pcm_hw_params *params, |
| 328 | snd_pcm_hw_param_t var, unsigned int val, |
| 329 | int *dir) |
| 330 | { |
| 331 | int changed = _snd_pcm_hw_param_max(params, var, val, dir ? *dir : 0); |
| 332 | if (changed < 0) |
| 333 | return changed; |
| 334 | if (params->rmask) { |
| 335 | int err = snd_pcm_hw_refine(pcm, params); |
| 336 | if (err < 0) |
| 337 | return err; |
| 338 | } |
| 339 | return snd_pcm_hw_param_value_max(params, var, dir); |
| 340 | } |
| 341 | |
| 342 | static int boundary_sub(int a, int adir, |
| 343 | int b, int bdir, |
| 344 | int *c, int *cdir) |
| 345 | { |
| 346 | adir = adir < 0 ? -1 : (adir > 0 ? 1 : 0); |
| 347 | bdir = bdir < 0 ? -1 : (bdir > 0 ? 1 : 0); |
| 348 | *c = a - b; |
| 349 | *cdir = adir - bdir; |
| 350 | if (*cdir == -2) { |
| 351 | (*c)--; |
| 352 | } else if (*cdir == 2) { |
| 353 | (*c)++; |
| 354 | } |
| 355 | return 0; |
| 356 | } |
| 357 | |
| 358 | static int boundary_lt(unsigned int a, int adir, |
| 359 | unsigned int b, int bdir) |
| 360 | { |
| 361 | if (adir < 0) { |
| 362 | a--; |
| 363 | adir = 1; |
| 364 | } else if (adir > 0) |
| 365 | adir = 1; |
| 366 | if (bdir < 0) { |
| 367 | b--; |
| 368 | bdir = 1; |
| 369 | } else if (bdir > 0) |
| 370 | bdir = 1; |
| 371 | return a < b || (a == b && adir < bdir); |
| 372 | } |
| 373 | |
| 374 | /* Return 1 if min is nearer to best than max */ |
| 375 | static int boundary_nearer(int min, int mindir, |
| 376 | int best, int bestdir, |
| 377 | int max, int maxdir) |
| 378 | { |
| 379 | int dmin, dmindir; |
| 380 | int dmax, dmaxdir; |
| 381 | boundary_sub(best, bestdir, min, mindir, &dmin, &dmindir); |
| 382 | boundary_sub(max, maxdir, best, bestdir, &dmax, &dmaxdir); |
| 383 | return boundary_lt(dmin, dmindir, dmax, dmaxdir); |
| 384 | } |
| 385 | |
| 386 | /** |
| 387 | * snd_pcm_hw_param_near |
| 388 | * @pcm: PCM instance |
| 389 | * @params: the hw_params instance |
| 390 | * @var: parameter to retrieve |
| 391 | * @best: value to set |
| 392 | * @dir: pointer to the direction (-1,0,1) or NULL |
| 393 | * |
| 394 | * Inside configuration space defined by PARAMS set PAR to the available value |
| 395 | * nearest to VAL. Reduce configuration space accordingly. |
| 396 | * This function cannot be called for SNDRV_PCM_HW_PARAM_ACCESS, |
| 397 | * SNDRV_PCM_HW_PARAM_FORMAT, SNDRV_PCM_HW_PARAM_SUBFORMAT. |
| 398 | * Return the value found. |
| 399 | */ |
| 400 | static int snd_pcm_hw_param_near(struct snd_pcm_substream *pcm, |
| 401 | struct snd_pcm_hw_params *params, |
| 402 | snd_pcm_hw_param_t var, unsigned int best, |
| 403 | int *dir) |
| 404 | { |
| 405 | struct snd_pcm_hw_params *save = NULL; |
| 406 | int v; |
| 407 | unsigned int saved_min; |
| 408 | int last = 0; |
| 409 | int min, max; |
| 410 | int mindir, maxdir; |
| 411 | int valdir = dir ? *dir : 0; |
| 412 | /* FIXME */ |
| 413 | if (best > INT_MAX) |
| 414 | best = INT_MAX; |
| 415 | min = max = best; |
| 416 | mindir = maxdir = valdir; |
| 417 | if (maxdir > 0) |
| 418 | maxdir = 0; |
| 419 | else if (maxdir == 0) |
| 420 | maxdir = -1; |
| 421 | else { |
| 422 | maxdir = 1; |
| 423 | max--; |
| 424 | } |
| 425 | save = kmalloc(sizeof(*save), GFP_KERNEL); |
| 426 | if (save == NULL) |
| 427 | return -ENOMEM; |
| 428 | *save = *params; |
| 429 | saved_min = min; |
| 430 | min = snd_pcm_hw_param_min(pcm, params, var, min, &mindir); |
| 431 | if (min >= 0) { |
| 432 | struct snd_pcm_hw_params *params1; |
| 433 | if (max < 0) |
| 434 | goto _end; |
| 435 | if ((unsigned int)min == saved_min && mindir == valdir) |
| 436 | goto _end; |
| 437 | params1 = kmalloc(sizeof(*params1), GFP_KERNEL); |
| 438 | if (params1 == NULL) { |
| 439 | kfree(save); |
| 440 | return -ENOMEM; |
| 441 | } |
| 442 | *params1 = *save; |
| 443 | max = snd_pcm_hw_param_max(pcm, params1, var, max, &maxdir); |
| 444 | if (max < 0) { |
| 445 | kfree(params1); |
| 446 | goto _end; |
| 447 | } |
| 448 | if (boundary_nearer(max, maxdir, best, valdir, min, mindir)) { |
| 449 | *params = *params1; |
| 450 | last = 1; |
| 451 | } |
| 452 | kfree(params1); |
| 453 | } else { |
| 454 | *params = *save; |
| 455 | max = snd_pcm_hw_param_max(pcm, params, var, max, &maxdir); |
Jesper Juhl | 3daa7ea | 2011-01-06 22:19:47 +0100 | [diff] [blame] | 456 | if (max < 0) { |
| 457 | kfree(save); |
Takashi Iwai | 7eaa943 | 2008-08-08 17:09:09 +0200 | [diff] [blame] | 458 | return max; |
Jesper Juhl | 3daa7ea | 2011-01-06 22:19:47 +0100 | [diff] [blame] | 459 | } |
Takashi Iwai | e88e8ae6 | 2006-04-28 15:13:40 +0200 | [diff] [blame] | 460 | last = 1; |
| 461 | } |
| 462 | _end: |
| 463 | kfree(save); |
| 464 | if (last) |
| 465 | v = snd_pcm_hw_param_last(pcm, params, var, dir); |
| 466 | else |
| 467 | v = snd_pcm_hw_param_first(pcm, params, var, dir); |
Takashi Iwai | 7eaa943 | 2008-08-08 17:09:09 +0200 | [diff] [blame] | 468 | snd_BUG_ON(v < 0); |
Takashi Iwai | e88e8ae6 | 2006-04-28 15:13:40 +0200 | [diff] [blame] | 469 | return v; |
| 470 | } |
| 471 | |
| 472 | static int _snd_pcm_hw_param_set(struct snd_pcm_hw_params *params, |
| 473 | snd_pcm_hw_param_t var, unsigned int val, |
| 474 | int dir) |
| 475 | { |
| 476 | int changed; |
| 477 | if (hw_is_mask(var)) { |
| 478 | struct snd_mask *m = hw_param_mask(params, var); |
| 479 | if (val == 0 && dir < 0) { |
| 480 | changed = -EINVAL; |
| 481 | snd_mask_none(m); |
| 482 | } else { |
| 483 | if (dir > 0) |
| 484 | val++; |
| 485 | else if (dir < 0) |
| 486 | val--; |
| 487 | changed = snd_mask_refine_set(hw_param_mask(params, var), val); |
| 488 | } |
| 489 | } else if (hw_is_interval(var)) { |
| 490 | struct snd_interval *i = hw_param_interval(params, var); |
| 491 | if (val == 0 && dir < 0) { |
| 492 | changed = -EINVAL; |
| 493 | snd_interval_none(i); |
| 494 | } else if (dir == 0) |
| 495 | changed = snd_interval_refine_set(i, val); |
| 496 | else { |
| 497 | struct snd_interval t; |
| 498 | t.openmin = 1; |
| 499 | t.openmax = 1; |
| 500 | t.empty = 0; |
| 501 | t.integer = 0; |
| 502 | if (dir < 0) { |
| 503 | t.min = val - 1; |
| 504 | t.max = val; |
| 505 | } else { |
| 506 | t.min = val; |
| 507 | t.max = val+1; |
| 508 | } |
| 509 | changed = snd_interval_refine(i, &t); |
| 510 | } |
| 511 | } else |
| 512 | return -EINVAL; |
| 513 | if (changed) { |
| 514 | params->cmask |= 1 << var; |
| 515 | params->rmask |= 1 << var; |
| 516 | } |
| 517 | return changed; |
| 518 | } |
| 519 | |
| 520 | /** |
| 521 | * snd_pcm_hw_param_set |
| 522 | * @pcm: PCM instance |
| 523 | * @params: the hw_params instance |
| 524 | * @var: parameter to retrieve |
| 525 | * @val: value to set |
| 526 | * @dir: pointer to the direction (-1,0,1) or NULL |
| 527 | * |
| 528 | * Inside configuration space defined by PARAMS remove from PAR all |
| 529 | * values != VAL. Reduce configuration space accordingly. |
| 530 | * Return VAL or -EINVAL if the configuration space is empty |
| 531 | */ |
| 532 | static int snd_pcm_hw_param_set(struct snd_pcm_substream *pcm, |
| 533 | struct snd_pcm_hw_params *params, |
| 534 | snd_pcm_hw_param_t var, unsigned int val, |
| 535 | int dir) |
| 536 | { |
| 537 | int changed = _snd_pcm_hw_param_set(params, var, val, dir); |
| 538 | if (changed < 0) |
| 539 | return changed; |
| 540 | if (params->rmask) { |
| 541 | int err = snd_pcm_hw_refine(pcm, params); |
| 542 | if (err < 0) |
| 543 | return err; |
| 544 | } |
| 545 | return snd_pcm_hw_param_value(params, var, NULL); |
| 546 | } |
| 547 | |
| 548 | static int _snd_pcm_hw_param_setinteger(struct snd_pcm_hw_params *params, |
| 549 | snd_pcm_hw_param_t var) |
| 550 | { |
| 551 | int changed; |
| 552 | changed = snd_interval_setinteger(hw_param_interval(params, var)); |
| 553 | if (changed) { |
| 554 | params->cmask |= 1 << var; |
| 555 | params->rmask |= 1 << var; |
| 556 | } |
| 557 | return changed; |
| 558 | } |
| 559 | |
| 560 | /* |
| 561 | * plugin |
| 562 | */ |
| 563 | |
Jaroslav Kysela | 21a3479 | 2006-01-13 09:12:11 +0100 | [diff] [blame] | 564 | #ifdef CONFIG_SND_PCM_OSS_PLUGINS |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 565 | static int snd_pcm_oss_plugin_clear(struct snd_pcm_substream *substream) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 566 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 567 | struct snd_pcm_runtime *runtime = substream->runtime; |
| 568 | struct snd_pcm_plugin *plugin, *next; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 569 | |
| 570 | plugin = runtime->oss.plugin_first; |
| 571 | while (plugin) { |
| 572 | next = plugin->next; |
| 573 | snd_pcm_plugin_free(plugin); |
| 574 | plugin = next; |
| 575 | } |
| 576 | runtime->oss.plugin_first = runtime->oss.plugin_last = NULL; |
| 577 | return 0; |
| 578 | } |
| 579 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 580 | static int snd_pcm_plugin_insert(struct snd_pcm_plugin *plugin) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 581 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 582 | struct snd_pcm_runtime *runtime = plugin->plug->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 583 | plugin->next = runtime->oss.plugin_first; |
| 584 | plugin->prev = NULL; |
| 585 | if (runtime->oss.plugin_first) { |
| 586 | runtime->oss.plugin_first->prev = plugin; |
| 587 | runtime->oss.plugin_first = plugin; |
| 588 | } else { |
| 589 | runtime->oss.plugin_last = |
| 590 | runtime->oss.plugin_first = plugin; |
| 591 | } |
| 592 | return 0; |
| 593 | } |
| 594 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 595 | int snd_pcm_plugin_append(struct snd_pcm_plugin *plugin) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 596 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 597 | struct snd_pcm_runtime *runtime = plugin->plug->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 598 | plugin->next = NULL; |
| 599 | plugin->prev = runtime->oss.plugin_last; |
| 600 | if (runtime->oss.plugin_last) { |
| 601 | runtime->oss.plugin_last->next = plugin; |
| 602 | runtime->oss.plugin_last = plugin; |
| 603 | } else { |
| 604 | runtime->oss.plugin_last = |
| 605 | runtime->oss.plugin_first = plugin; |
| 606 | } |
| 607 | return 0; |
| 608 | } |
Jaroslav Kysela | 21a3479 | 2006-01-13 09:12:11 +0100 | [diff] [blame] | 609 | #endif /* CONFIG_SND_PCM_OSS_PLUGINS */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 610 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 611 | 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] | 612 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 613 | struct snd_pcm_runtime *runtime = substream->runtime; |
Jaroslav Kysela | af08161 | 2005-05-27 11:15:20 +0200 | [diff] [blame] | 614 | long buffer_size = snd_pcm_lib_buffer_bytes(substream); |
Jaroslav Kysela | bfc5bdd | 2005-05-27 11:12:35 +0200 | [diff] [blame] | 615 | long bytes = frames_to_bytes(runtime, frames); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 616 | if (buffer_size == runtime->oss.buffer_bytes) |
Jaroslav Kysela | bfc5bdd | 2005-05-27 11:12:35 +0200 | [diff] [blame] | 617 | return bytes; |
Takashi Iwai | cdc5c53f | 2005-05-27 12:40:52 +0200 | [diff] [blame] | 618 | #if BITS_PER_LONG >= 64 |
| 619 | return runtime->oss.buffer_bytes * bytes / buffer_size; |
| 620 | #else |
| 621 | { |
| 622 | u64 bsize = (u64)runtime->oss.buffer_bytes * (u64)bytes; |
Takashi Iwai | 3f7440a | 2009-06-05 17:40:04 +0200 | [diff] [blame] | 623 | return div_u64(bsize, buffer_size); |
Takashi Iwai | cdc5c53f | 2005-05-27 12:40:52 +0200 | [diff] [blame] | 624 | } |
| 625 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 626 | } |
| 627 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 628 | static long snd_pcm_alsa_frames(struct snd_pcm_substream *substream, long bytes) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 629 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 630 | struct snd_pcm_runtime *runtime = substream->runtime; |
Jaroslav Kysela | af08161 | 2005-05-27 11:15:20 +0200 | [diff] [blame] | 631 | long buffer_size = snd_pcm_lib_buffer_bytes(substream); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 632 | if (buffer_size == runtime->oss.buffer_bytes) |
| 633 | return bytes_to_frames(runtime, bytes); |
| 634 | return bytes_to_frames(runtime, (buffer_size * bytes) / runtime->oss.buffer_bytes); |
| 635 | } |
| 636 | |
Jaroslav Kysela | f240406 | 2010-01-05 17:19:34 +0100 | [diff] [blame] | 637 | static inline |
| 638 | snd_pcm_uframes_t get_hw_ptr_period(struct snd_pcm_runtime *runtime) |
| 639 | { |
Jaroslav Kysela | e763692 | 2010-01-26 17:08:24 +0100 | [diff] [blame] | 640 | return runtime->hw_ptr_interrupt; |
Jaroslav Kysela | f240406 | 2010-01-05 17:19:34 +0100 | [diff] [blame] | 641 | } |
| 642 | |
Takashi Iwai | 24038a2 | 2007-08-08 17:00:32 +0200 | [diff] [blame] | 643 | /* define extended formats in the recent OSS versions (if any) */ |
| 644 | /* linear formats */ |
| 645 | #define AFMT_S32_LE 0x00001000 |
| 646 | #define AFMT_S32_BE 0x00002000 |
| 647 | #define AFMT_S24_LE 0x00008000 |
| 648 | #define AFMT_S24_BE 0x00010000 |
| 649 | #define AFMT_S24_PACKED 0x00040000 |
| 650 | |
| 651 | /* other supported formats */ |
| 652 | #define AFMT_FLOAT 0x00004000 |
| 653 | #define AFMT_SPDIF_RAW 0x00020000 |
| 654 | |
| 655 | /* unsupported formats */ |
| 656 | #define AFMT_AC3 0x00000400 |
| 657 | #define AFMT_VORBIS 0x00000800 |
| 658 | |
Clemens Ladisch | fea952e | 2011-02-14 11:00:47 +0100 | [diff] [blame] | 659 | static snd_pcm_format_t snd_pcm_oss_format_from(int format) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 660 | { |
| 661 | switch (format) { |
| 662 | case AFMT_MU_LAW: return SNDRV_PCM_FORMAT_MU_LAW; |
| 663 | case AFMT_A_LAW: return SNDRV_PCM_FORMAT_A_LAW; |
| 664 | case AFMT_IMA_ADPCM: return SNDRV_PCM_FORMAT_IMA_ADPCM; |
| 665 | case AFMT_U8: return SNDRV_PCM_FORMAT_U8; |
| 666 | case AFMT_S16_LE: return SNDRV_PCM_FORMAT_S16_LE; |
| 667 | case AFMT_S16_BE: return SNDRV_PCM_FORMAT_S16_BE; |
| 668 | case AFMT_S8: return SNDRV_PCM_FORMAT_S8; |
| 669 | case AFMT_U16_LE: return SNDRV_PCM_FORMAT_U16_LE; |
| 670 | case AFMT_U16_BE: return SNDRV_PCM_FORMAT_U16_BE; |
| 671 | case AFMT_MPEG: return SNDRV_PCM_FORMAT_MPEG; |
Takashi Iwai | 24038a2 | 2007-08-08 17:00:32 +0200 | [diff] [blame] | 672 | case AFMT_S32_LE: return SNDRV_PCM_FORMAT_S32_LE; |
| 673 | case AFMT_S32_BE: return SNDRV_PCM_FORMAT_S32_BE; |
| 674 | case AFMT_S24_LE: return SNDRV_PCM_FORMAT_S24_LE; |
| 675 | case AFMT_S24_BE: return SNDRV_PCM_FORMAT_S24_BE; |
| 676 | case AFMT_S24_PACKED: return SNDRV_PCM_FORMAT_S24_3LE; |
| 677 | case AFMT_FLOAT: return SNDRV_PCM_FORMAT_FLOAT; |
| 678 | case AFMT_SPDIF_RAW: return SNDRV_PCM_FORMAT_IEC958_SUBFRAME; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 679 | default: return SNDRV_PCM_FORMAT_U8; |
| 680 | } |
| 681 | } |
| 682 | |
Clemens Ladisch | fea952e | 2011-02-14 11:00:47 +0100 | [diff] [blame] | 683 | static int snd_pcm_oss_format_to(snd_pcm_format_t format) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 684 | { |
| 685 | switch (format) { |
| 686 | case SNDRV_PCM_FORMAT_MU_LAW: return AFMT_MU_LAW; |
| 687 | case SNDRV_PCM_FORMAT_A_LAW: return AFMT_A_LAW; |
| 688 | case SNDRV_PCM_FORMAT_IMA_ADPCM: return AFMT_IMA_ADPCM; |
| 689 | case SNDRV_PCM_FORMAT_U8: return AFMT_U8; |
| 690 | case SNDRV_PCM_FORMAT_S16_LE: return AFMT_S16_LE; |
| 691 | case SNDRV_PCM_FORMAT_S16_BE: return AFMT_S16_BE; |
| 692 | case SNDRV_PCM_FORMAT_S8: return AFMT_S8; |
| 693 | case SNDRV_PCM_FORMAT_U16_LE: return AFMT_U16_LE; |
| 694 | case SNDRV_PCM_FORMAT_U16_BE: return AFMT_U16_BE; |
| 695 | case SNDRV_PCM_FORMAT_MPEG: return AFMT_MPEG; |
Takashi Iwai | 24038a2 | 2007-08-08 17:00:32 +0200 | [diff] [blame] | 696 | case SNDRV_PCM_FORMAT_S32_LE: return AFMT_S32_LE; |
| 697 | case SNDRV_PCM_FORMAT_S32_BE: return AFMT_S32_BE; |
| 698 | case SNDRV_PCM_FORMAT_S24_LE: return AFMT_S24_LE; |
| 699 | case SNDRV_PCM_FORMAT_S24_BE: return AFMT_S24_BE; |
| 700 | case SNDRV_PCM_FORMAT_S24_3LE: return AFMT_S24_PACKED; |
| 701 | case SNDRV_PCM_FORMAT_FLOAT: return AFMT_FLOAT; |
| 702 | case SNDRV_PCM_FORMAT_IEC958_SUBFRAME: return AFMT_SPDIF_RAW; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 703 | default: return -EINVAL; |
| 704 | } |
| 705 | } |
| 706 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 707 | static int snd_pcm_oss_period_size(struct snd_pcm_substream *substream, |
| 708 | struct snd_pcm_hw_params *oss_params, |
| 709 | struct snd_pcm_hw_params *slave_params) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 710 | { |
| 711 | size_t s; |
| 712 | size_t oss_buffer_size, oss_period_size, oss_periods; |
| 713 | size_t min_period_size, max_period_size; |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 714 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 715 | size_t oss_frame_size; |
| 716 | |
| 717 | oss_frame_size = snd_pcm_format_physical_width(params_format(oss_params)) * |
| 718 | params_channels(oss_params) / 8; |
| 719 | |
| 720 | oss_buffer_size = snd_pcm_plug_client_size(substream, |
| 721 | snd_pcm_hw_param_value_max(slave_params, SNDRV_PCM_HW_PARAM_BUFFER_SIZE, NULL)) * oss_frame_size; |
| 722 | oss_buffer_size = 1 << ld2(oss_buffer_size); |
Takashi Iwai | 9c323fc | 2006-04-28 15:13:41 +0200 | [diff] [blame] | 723 | if (atomic_read(&substream->mmap_count)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 724 | if (oss_buffer_size > runtime->oss.mmap_bytes) |
| 725 | oss_buffer_size = runtime->oss.mmap_bytes; |
| 726 | } |
| 727 | |
Takashi Iwai | 060d77b | 2006-03-27 16:44:52 +0200 | [diff] [blame] | 728 | if (substream->oss.setup.period_size > 16) |
| 729 | oss_period_size = substream->oss.setup.period_size; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 730 | else if (runtime->oss.fragshift) { |
| 731 | oss_period_size = 1 << runtime->oss.fragshift; |
| 732 | if (oss_period_size > oss_buffer_size / 2) |
| 733 | oss_period_size = oss_buffer_size / 2; |
| 734 | } else { |
| 735 | int sd; |
| 736 | size_t bytes_per_sec = params_rate(oss_params) * snd_pcm_format_physical_width(params_format(oss_params)) * params_channels(oss_params) / 8; |
| 737 | |
| 738 | oss_period_size = oss_buffer_size; |
| 739 | do { |
| 740 | oss_period_size /= 2; |
| 741 | } while (oss_period_size > bytes_per_sec); |
| 742 | if (runtime->oss.subdivision == 0) { |
| 743 | sd = 4; |
| 744 | if (oss_period_size / sd > 4096) |
| 745 | sd *= 2; |
| 746 | if (oss_period_size / sd < 4096) |
| 747 | sd = 1; |
| 748 | } else |
| 749 | sd = runtime->oss.subdivision; |
| 750 | oss_period_size /= sd; |
| 751 | if (oss_period_size < 16) |
| 752 | oss_period_size = 16; |
| 753 | } |
| 754 | |
| 755 | min_period_size = snd_pcm_plug_client_size(substream, |
| 756 | snd_pcm_hw_param_value_min(slave_params, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, NULL)); |
| 757 | min_period_size *= oss_frame_size; |
| 758 | min_period_size = 1 << (ld2(min_period_size - 1) + 1); |
| 759 | if (oss_period_size < min_period_size) |
| 760 | oss_period_size = min_period_size; |
| 761 | |
| 762 | max_period_size = snd_pcm_plug_client_size(substream, |
| 763 | snd_pcm_hw_param_value_max(slave_params, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, NULL)); |
| 764 | max_period_size *= oss_frame_size; |
| 765 | max_period_size = 1 << ld2(max_period_size); |
| 766 | if (oss_period_size > max_period_size) |
| 767 | oss_period_size = max_period_size; |
| 768 | |
| 769 | oss_periods = oss_buffer_size / oss_period_size; |
| 770 | |
Takashi Iwai | 060d77b | 2006-03-27 16:44:52 +0200 | [diff] [blame] | 771 | if (substream->oss.setup.periods > 1) |
| 772 | oss_periods = substream->oss.setup.periods; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 773 | |
| 774 | s = snd_pcm_hw_param_value_max(slave_params, SNDRV_PCM_HW_PARAM_PERIODS, NULL); |
| 775 | if (runtime->oss.maxfrags && s > runtime->oss.maxfrags) |
| 776 | s = runtime->oss.maxfrags; |
| 777 | if (oss_periods > s) |
| 778 | oss_periods = s; |
| 779 | |
| 780 | s = snd_pcm_hw_param_value_min(slave_params, SNDRV_PCM_HW_PARAM_PERIODS, NULL); |
| 781 | if (s < 2) |
| 782 | s = 2; |
| 783 | if (oss_periods < s) |
| 784 | oss_periods = s; |
| 785 | |
| 786 | while (oss_period_size * oss_periods > oss_buffer_size) |
| 787 | oss_period_size /= 2; |
| 788 | |
Takashi Iwai | 7eaa943 | 2008-08-08 17:09:09 +0200 | [diff] [blame] | 789 | if (oss_period_size < 16) |
| 790 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 791 | runtime->oss.period_bytes = oss_period_size; |
| 792 | runtime->oss.period_frames = 1; |
| 793 | runtime->oss.periods = oss_periods; |
| 794 | return 0; |
| 795 | } |
| 796 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 797 | static int choose_rate(struct snd_pcm_substream *substream, |
| 798 | struct snd_pcm_hw_params *params, unsigned int best_rate) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 799 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 800 | struct snd_interval *it; |
| 801 | struct snd_pcm_hw_params *save; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 802 | unsigned int rate, prev; |
| 803 | |
| 804 | save = kmalloc(sizeof(*save), GFP_KERNEL); |
| 805 | if (save == NULL) |
| 806 | return -ENOMEM; |
| 807 | *save = *params; |
| 808 | it = hw_param_interval(save, SNDRV_PCM_HW_PARAM_RATE); |
| 809 | |
| 810 | /* try multiples of the best rate */ |
| 811 | rate = best_rate; |
| 812 | for (;;) { |
| 813 | if (it->max < rate || (it->max == rate && it->openmax)) |
| 814 | break; |
| 815 | if (it->min < rate || (it->min == rate && !it->openmin)) { |
| 816 | int ret; |
| 817 | ret = snd_pcm_hw_param_set(substream, params, |
| 818 | SNDRV_PCM_HW_PARAM_RATE, |
| 819 | rate, 0); |
| 820 | if (ret == (int)rate) { |
| 821 | kfree(save); |
| 822 | return rate; |
| 823 | } |
| 824 | *params = *save; |
| 825 | } |
| 826 | prev = rate; |
| 827 | rate += best_rate; |
| 828 | if (rate <= prev) |
| 829 | break; |
| 830 | } |
| 831 | |
| 832 | /* not found, use the nearest rate */ |
| 833 | kfree(save); |
| 834 | return snd_pcm_hw_param_near(substream, params, SNDRV_PCM_HW_PARAM_RATE, best_rate, NULL); |
| 835 | } |
| 836 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 837 | static int snd_pcm_oss_change_params(struct snd_pcm_substream *substream) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 838 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 839 | struct snd_pcm_runtime *runtime = substream->runtime; |
| 840 | struct snd_pcm_hw_params *params, *sparams; |
| 841 | struct snd_pcm_sw_params *sw_params; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 842 | ssize_t oss_buffer_size, oss_period_size; |
| 843 | size_t oss_frame_size; |
| 844 | int err; |
| 845 | int direct; |
Clemens Ladisch | fea952e | 2011-02-14 11:00:47 +0100 | [diff] [blame] | 846 | snd_pcm_format_t format, sformat; |
| 847 | int n; |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 848 | struct snd_mask sformat_mask; |
| 849 | struct snd_mask mask; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 850 | |
Takashi Iwai | e3a5d59 | 2006-11-14 13:03:19 +0100 | [diff] [blame] | 851 | if (mutex_lock_interruptible(&runtime->oss.params_lock)) |
| 852 | return -EINTR; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 853 | sw_params = kmalloc(sizeof(*sw_params), GFP_KERNEL); |
| 854 | params = kmalloc(sizeof(*params), GFP_KERNEL); |
| 855 | sparams = kmalloc(sizeof(*sparams), GFP_KERNEL); |
| 856 | if (!sw_params || !params || !sparams) { |
| 857 | snd_printd("No memory\n"); |
| 858 | err = -ENOMEM; |
| 859 | goto failure; |
| 860 | } |
| 861 | |
Takashi Iwai | 9c323fc | 2006-04-28 15:13:41 +0200 | [diff] [blame] | 862 | if (atomic_read(&substream->mmap_count)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 863 | direct = 1; |
Takashi Iwai | 060d77b | 2006-03-27 16:44:52 +0200 | [diff] [blame] | 864 | else |
| 865 | direct = substream->oss.setup.direct; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 866 | |
| 867 | _snd_pcm_hw_params_any(sparams); |
| 868 | _snd_pcm_hw_param_setinteger(sparams, SNDRV_PCM_HW_PARAM_PERIODS); |
| 869 | _snd_pcm_hw_param_min(sparams, SNDRV_PCM_HW_PARAM_PERIODS, 2, 0); |
| 870 | snd_mask_none(&mask); |
Takashi Iwai | 9c323fc | 2006-04-28 15:13:41 +0200 | [diff] [blame] | 871 | if (atomic_read(&substream->mmap_count)) |
Clemens Ladisch | fea952e | 2011-02-14 11:00:47 +0100 | [diff] [blame] | 872 | snd_mask_set(&mask, (__force int)SNDRV_PCM_ACCESS_MMAP_INTERLEAVED); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 873 | else { |
Clemens Ladisch | fea952e | 2011-02-14 11:00:47 +0100 | [diff] [blame] | 874 | snd_mask_set(&mask, (__force int)SNDRV_PCM_ACCESS_RW_INTERLEAVED); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 875 | if (!direct) |
Clemens Ladisch | fea952e | 2011-02-14 11:00:47 +0100 | [diff] [blame] | 876 | snd_mask_set(&mask, (__force int)SNDRV_PCM_ACCESS_RW_NONINTERLEAVED); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 877 | } |
| 878 | err = snd_pcm_hw_param_mask(substream, sparams, SNDRV_PCM_HW_PARAM_ACCESS, &mask); |
| 879 | if (err < 0) { |
| 880 | snd_printd("No usable accesses\n"); |
| 881 | err = -EINVAL; |
| 882 | goto failure; |
| 883 | } |
| 884 | choose_rate(substream, sparams, runtime->oss.rate); |
| 885 | snd_pcm_hw_param_near(substream, sparams, SNDRV_PCM_HW_PARAM_CHANNELS, runtime->oss.channels, NULL); |
| 886 | |
| 887 | format = snd_pcm_oss_format_from(runtime->oss.format); |
| 888 | |
| 889 | sformat_mask = *hw_param_mask(sparams, SNDRV_PCM_HW_PARAM_FORMAT); |
| 890 | if (direct) |
| 891 | sformat = format; |
| 892 | else |
| 893 | sformat = snd_pcm_plug_slave_format(format, &sformat_mask); |
| 894 | |
Clemens Ladisch | fea952e | 2011-02-14 11:00:47 +0100 | [diff] [blame] | 895 | if ((__force int)sformat < 0 || |
| 896 | !snd_mask_test(&sformat_mask, (__force int)sformat)) { |
| 897 | for (sformat = (__force snd_pcm_format_t)0; |
| 898 | (__force int)sformat <= (__force int)SNDRV_PCM_FORMAT_LAST; |
| 899 | sformat = (__force snd_pcm_format_t)((__force int)sformat + 1)) { |
| 900 | if (snd_mask_test(&sformat_mask, (__force int)sformat) && |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 901 | snd_pcm_oss_format_to(sformat) >= 0) |
| 902 | break; |
| 903 | } |
Clemens Ladisch | fea952e | 2011-02-14 11:00:47 +0100 | [diff] [blame] | 904 | if ((__force int)sformat > (__force int)SNDRV_PCM_FORMAT_LAST) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 905 | snd_printd("Cannot find a format!!!\n"); |
| 906 | err = -EINVAL; |
| 907 | goto failure; |
| 908 | } |
| 909 | } |
Clemens Ladisch | fea952e | 2011-02-14 11:00:47 +0100 | [diff] [blame] | 910 | err = _snd_pcm_hw_param_set(sparams, SNDRV_PCM_HW_PARAM_FORMAT, (__force int)sformat, 0); |
Takashi Iwai | 7eaa943 | 2008-08-08 17:09:09 +0200 | [diff] [blame] | 911 | if (err < 0) |
| 912 | goto failure; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 913 | |
| 914 | if (direct) { |
| 915 | memcpy(params, sparams, sizeof(*params)); |
| 916 | } else { |
| 917 | _snd_pcm_hw_params_any(params); |
| 918 | _snd_pcm_hw_param_set(params, SNDRV_PCM_HW_PARAM_ACCESS, |
Clemens Ladisch | fea952e | 2011-02-14 11:00:47 +0100 | [diff] [blame] | 919 | (__force int)SNDRV_PCM_ACCESS_RW_INTERLEAVED, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 920 | _snd_pcm_hw_param_set(params, SNDRV_PCM_HW_PARAM_FORMAT, |
Clemens Ladisch | fea952e | 2011-02-14 11:00:47 +0100 | [diff] [blame] | 921 | (__force int)snd_pcm_oss_format_from(runtime->oss.format), 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 922 | _snd_pcm_hw_param_set(params, SNDRV_PCM_HW_PARAM_CHANNELS, |
| 923 | runtime->oss.channels, 0); |
| 924 | _snd_pcm_hw_param_set(params, SNDRV_PCM_HW_PARAM_RATE, |
| 925 | runtime->oss.rate, 0); |
| 926 | pdprintf("client: access = %i, format = %i, channels = %i, rate = %i\n", |
| 927 | params_access(params), params_format(params), |
| 928 | params_channels(params), params_rate(params)); |
| 929 | } |
| 930 | pdprintf("slave: access = %i, format = %i, channels = %i, rate = %i\n", |
| 931 | params_access(sparams), params_format(sparams), |
| 932 | params_channels(sparams), params_rate(sparams)); |
| 933 | |
| 934 | oss_frame_size = snd_pcm_format_physical_width(params_format(params)) * |
| 935 | params_channels(params) / 8; |
| 936 | |
Jaroslav Kysela | 21a3479 | 2006-01-13 09:12:11 +0100 | [diff] [blame] | 937 | #ifdef CONFIG_SND_PCM_OSS_PLUGINS |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 938 | snd_pcm_oss_plugin_clear(substream); |
| 939 | if (!direct) { |
| 940 | /* add necessary plugins */ |
| 941 | snd_pcm_oss_plugin_clear(substream); |
| 942 | if ((err = snd_pcm_plug_format_plugins(substream, |
| 943 | params, |
| 944 | sparams)) < 0) { |
| 945 | snd_printd("snd_pcm_plug_format_plugins failed: %i\n", err); |
| 946 | snd_pcm_oss_plugin_clear(substream); |
| 947 | goto failure; |
| 948 | } |
| 949 | if (runtime->oss.plugin_first) { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 950 | struct snd_pcm_plugin *plugin; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 951 | if ((err = snd_pcm_plugin_build_io(substream, sparams, &plugin)) < 0) { |
| 952 | snd_printd("snd_pcm_plugin_build_io failed: %i\n", err); |
| 953 | snd_pcm_oss_plugin_clear(substream); |
| 954 | goto failure; |
| 955 | } |
| 956 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { |
| 957 | err = snd_pcm_plugin_append(plugin); |
| 958 | } else { |
| 959 | err = snd_pcm_plugin_insert(plugin); |
| 960 | } |
| 961 | if (err < 0) { |
| 962 | snd_pcm_oss_plugin_clear(substream); |
| 963 | goto failure; |
| 964 | } |
| 965 | } |
| 966 | } |
Jaroslav Kysela | 21a3479 | 2006-01-13 09:12:11 +0100 | [diff] [blame] | 967 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 968 | |
| 969 | err = snd_pcm_oss_period_size(substream, params, sparams); |
| 970 | if (err < 0) |
| 971 | goto failure; |
| 972 | |
| 973 | n = snd_pcm_plug_slave_size(substream, runtime->oss.period_bytes / oss_frame_size); |
| 974 | 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] | 975 | if (err < 0) |
| 976 | goto failure; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 977 | |
| 978 | err = snd_pcm_hw_param_near(substream, sparams, SNDRV_PCM_HW_PARAM_PERIODS, |
| 979 | runtime->oss.periods, NULL); |
Takashi Iwai | 7eaa943 | 2008-08-08 17:09:09 +0200 | [diff] [blame] | 980 | if (err < 0) |
| 981 | goto failure; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 982 | |
| 983 | snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DROP, NULL); |
| 984 | |
| 985 | if ((err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_HW_PARAMS, sparams)) < 0) { |
| 986 | snd_printd("HW_PARAMS failed: %i\n", err); |
| 987 | goto failure; |
| 988 | } |
| 989 | |
| 990 | memset(sw_params, 0, sizeof(*sw_params)); |
| 991 | if (runtime->oss.trigger) { |
| 992 | sw_params->start_threshold = 1; |
| 993 | } else { |
| 994 | sw_params->start_threshold = runtime->boundary; |
| 995 | } |
Takashi Iwai | 9c323fc | 2006-04-28 15:13:41 +0200 | [diff] [blame] | 996 | if (atomic_read(&substream->mmap_count) || |
| 997 | substream->stream == SNDRV_PCM_STREAM_CAPTURE) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 998 | sw_params->stop_threshold = runtime->boundary; |
| 999 | else |
| 1000 | sw_params->stop_threshold = runtime->buffer_size; |
| 1001 | sw_params->tstamp_mode = SNDRV_PCM_TSTAMP_NONE; |
| 1002 | sw_params->period_step = 1; |
Takashi Iwai | 004e653 | 2005-04-12 17:33:59 +0200 | [diff] [blame] | 1003 | sw_params->avail_min = substream->stream == SNDRV_PCM_STREAM_PLAYBACK ? |
| 1004 | 1 : runtime->period_size; |
Takashi Iwai | 9c323fc | 2006-04-28 15:13:41 +0200 | [diff] [blame] | 1005 | if (atomic_read(&substream->mmap_count) || |
Takashi Iwai | 060d77b | 2006-03-27 16:44:52 +0200 | [diff] [blame] | 1006 | substream->oss.setup.nosilence) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1007 | sw_params->silence_threshold = 0; |
| 1008 | sw_params->silence_size = 0; |
| 1009 | } else { |
| 1010 | snd_pcm_uframes_t frames; |
| 1011 | frames = runtime->period_size + 16; |
| 1012 | if (frames > runtime->buffer_size) |
| 1013 | frames = runtime->buffer_size; |
| 1014 | sw_params->silence_threshold = frames; |
| 1015 | sw_params->silence_size = frames; |
| 1016 | } |
| 1017 | |
| 1018 | if ((err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_SW_PARAMS, sw_params)) < 0) { |
| 1019 | snd_printd("SW_PARAMS failed: %i\n", err); |
| 1020 | goto failure; |
| 1021 | } |
| 1022 | |
| 1023 | runtime->oss.periods = params_periods(sparams); |
| 1024 | 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] | 1025 | if (oss_period_size < 0) { |
| 1026 | err = -EINVAL; |
| 1027 | goto failure; |
| 1028 | } |
Jaroslav Kysela | 21a3479 | 2006-01-13 09:12:11 +0100 | [diff] [blame] | 1029 | #ifdef CONFIG_SND_PCM_OSS_PLUGINS |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1030 | if (runtime->oss.plugin_first) { |
| 1031 | err = snd_pcm_plug_alloc(substream, oss_period_size); |
| 1032 | if (err < 0) |
| 1033 | goto failure; |
| 1034 | } |
Jaroslav Kysela | 21a3479 | 2006-01-13 09:12:11 +0100 | [diff] [blame] | 1035 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1036 | oss_period_size *= oss_frame_size; |
| 1037 | |
| 1038 | oss_buffer_size = oss_period_size * runtime->oss.periods; |
Takashi Iwai | 7eaa943 | 2008-08-08 17:09:09 +0200 | [diff] [blame] | 1039 | if (oss_buffer_size < 0) { |
| 1040 | err = -EINVAL; |
| 1041 | goto failure; |
| 1042 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1043 | |
| 1044 | runtime->oss.period_bytes = oss_period_size; |
| 1045 | runtime->oss.buffer_bytes = oss_buffer_size; |
| 1046 | |
| 1047 | pdprintf("oss: period bytes = %i, buffer bytes = %i\n", |
| 1048 | runtime->oss.period_bytes, |
| 1049 | runtime->oss.buffer_bytes); |
| 1050 | pdprintf("slave: period_size = %i, buffer_size = %i\n", |
| 1051 | params_period_size(sparams), |
| 1052 | params_buffer_size(sparams)); |
| 1053 | |
| 1054 | runtime->oss.format = snd_pcm_oss_format_to(params_format(params)); |
| 1055 | runtime->oss.channels = params_channels(params); |
| 1056 | runtime->oss.rate = params_rate(params); |
| 1057 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1058 | vfree(runtime->oss.buffer); |
| 1059 | runtime->oss.buffer = vmalloc(runtime->oss.period_bytes); |
Roel Kluin | cbbb057 | 2009-08-31 16:32:12 +0200 | [diff] [blame] | 1060 | if (!runtime->oss.buffer) { |
| 1061 | err = -ENOMEM; |
| 1062 | goto failure; |
| 1063 | } |
| 1064 | |
| 1065 | runtime->oss.params = 0; |
| 1066 | runtime->oss.prepare = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1067 | runtime->oss.buffer_used = 0; |
| 1068 | if (runtime->dma_area) |
| 1069 | snd_pcm_format_set_silence(runtime->format, runtime->dma_area, bytes_to_samples(runtime, runtime->dma_bytes)); |
| 1070 | |
| 1071 | runtime->oss.period_frames = snd_pcm_alsa_frames(substream, oss_period_size); |
| 1072 | |
| 1073 | err = 0; |
| 1074 | failure: |
| 1075 | kfree(sw_params); |
| 1076 | kfree(params); |
| 1077 | kfree(sparams); |
Takashi Iwai | e3a5d59 | 2006-11-14 13:03:19 +0100 | [diff] [blame] | 1078 | mutex_unlock(&runtime->oss.params_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1079 | return err; |
| 1080 | } |
| 1081 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1082 | 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] | 1083 | { |
| 1084 | int idx, err; |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1085 | struct snd_pcm_substream *asubstream = NULL, *substream; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1086 | |
| 1087 | for (idx = 0; idx < 2; idx++) { |
| 1088 | substream = pcm_oss_file->streams[idx]; |
| 1089 | if (substream == NULL) |
| 1090 | continue; |
| 1091 | if (asubstream == NULL) |
| 1092 | asubstream = substream; |
| 1093 | if (substream->runtime->oss.params) { |
| 1094 | err = snd_pcm_oss_change_params(substream); |
| 1095 | if (err < 0) |
| 1096 | return err; |
| 1097 | } |
| 1098 | } |
Takashi Iwai | 7eaa943 | 2008-08-08 17:09:09 +0200 | [diff] [blame] | 1099 | if (!asubstream) |
| 1100 | return -EIO; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1101 | if (r_substream) |
| 1102 | *r_substream = asubstream; |
| 1103 | return 0; |
| 1104 | } |
| 1105 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1106 | static int snd_pcm_oss_prepare(struct snd_pcm_substream *substream) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1107 | { |
| 1108 | int err; |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1109 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1110 | |
| 1111 | err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_PREPARE, NULL); |
| 1112 | if (err < 0) { |
| 1113 | snd_printd("snd_pcm_oss_prepare: SNDRV_PCM_IOCTL_PREPARE failed\n"); |
| 1114 | return err; |
| 1115 | } |
| 1116 | runtime->oss.prepare = 0; |
Jaroslav Kysela | f240406 | 2010-01-05 17:19:34 +0100 | [diff] [blame] | 1117 | runtime->oss.prev_hw_ptr_period = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1118 | runtime->oss.period_ptr = 0; |
| 1119 | runtime->oss.buffer_used = 0; |
| 1120 | |
| 1121 | return 0; |
| 1122 | } |
| 1123 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1124 | static int snd_pcm_oss_make_ready(struct snd_pcm_substream *substream) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1125 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1126 | struct snd_pcm_runtime *runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1127 | int err; |
| 1128 | |
| 1129 | if (substream == NULL) |
| 1130 | return 0; |
| 1131 | runtime = substream->runtime; |
| 1132 | if (runtime->oss.params) { |
| 1133 | err = snd_pcm_oss_change_params(substream); |
| 1134 | if (err < 0) |
| 1135 | return err; |
| 1136 | } |
| 1137 | if (runtime->oss.prepare) { |
| 1138 | err = snd_pcm_oss_prepare(substream); |
| 1139 | if (err < 0) |
| 1140 | return err; |
| 1141 | } |
| 1142 | return 0; |
| 1143 | } |
| 1144 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1145 | 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] | 1146 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1147 | struct snd_pcm_runtime *runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1148 | snd_pcm_uframes_t frames; |
| 1149 | int err = 0; |
| 1150 | |
| 1151 | while (1) { |
| 1152 | err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DELAY, delay); |
| 1153 | if (err < 0) |
| 1154 | break; |
| 1155 | runtime = substream->runtime; |
| 1156 | if (*delay <= (snd_pcm_sframes_t)runtime->buffer_size) |
| 1157 | break; |
| 1158 | /* in case of overrun, skip whole periods like OSS/Linux driver does */ |
| 1159 | /* until avail(delay) <= buffer_size */ |
| 1160 | frames = (*delay - runtime->buffer_size) + runtime->period_size - 1; |
| 1161 | frames /= runtime->period_size; |
| 1162 | frames *= runtime->period_size; |
| 1163 | err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_FORWARD, &frames); |
| 1164 | if (err < 0) |
| 1165 | break; |
| 1166 | } |
| 1167 | return err; |
| 1168 | } |
| 1169 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1170 | 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] | 1171 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1172 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1173 | int ret; |
| 1174 | while (1) { |
| 1175 | if (runtime->status->state == SNDRV_PCM_STATE_XRUN || |
| 1176 | runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) { |
| 1177 | #ifdef OSS_DEBUG |
| 1178 | if (runtime->status->state == SNDRV_PCM_STATE_XRUN) |
Takashi Iwai | 006de267 | 2009-02-05 15:51:04 +0100 | [diff] [blame] | 1179 | printk(KERN_DEBUG "pcm_oss: write: " |
| 1180 | "recovering from XRUN\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1181 | else |
Takashi Iwai | 006de267 | 2009-02-05 15:51:04 +0100 | [diff] [blame] | 1182 | printk(KERN_DEBUG "pcm_oss: write: " |
| 1183 | "recovering from SUSPEND\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1184 | #endif |
| 1185 | ret = snd_pcm_oss_prepare(substream); |
| 1186 | if (ret < 0) |
| 1187 | break; |
| 1188 | } |
| 1189 | if (in_kernel) { |
| 1190 | mm_segment_t fs; |
| 1191 | fs = snd_enter_user(); |
Clemens Ladisch | fea952e | 2011-02-14 11:00:47 +0100 | [diff] [blame] | 1192 | ret = snd_pcm_lib_write(substream, (void __force __user *)ptr, frames); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1193 | snd_leave_user(fs); |
| 1194 | } else { |
Clemens Ladisch | fea952e | 2011-02-14 11:00:47 +0100 | [diff] [blame] | 1195 | ret = snd_pcm_lib_write(substream, (void __force __user *)ptr, frames); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1196 | } |
| 1197 | if (ret != -EPIPE && ret != -ESTRPIPE) |
| 1198 | break; |
| 1199 | /* test, if we can't store new data, because the stream */ |
| 1200 | /* has not been started */ |
| 1201 | if (runtime->status->state == SNDRV_PCM_STATE_PREPARED) |
| 1202 | return -EAGAIN; |
| 1203 | } |
| 1204 | return ret; |
| 1205 | } |
| 1206 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1207 | 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] | 1208 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1209 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1210 | snd_pcm_sframes_t delay; |
| 1211 | int ret; |
| 1212 | while (1) { |
| 1213 | if (runtime->status->state == SNDRV_PCM_STATE_XRUN || |
| 1214 | runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) { |
| 1215 | #ifdef OSS_DEBUG |
| 1216 | if (runtime->status->state == SNDRV_PCM_STATE_XRUN) |
Takashi Iwai | 006de267 | 2009-02-05 15:51:04 +0100 | [diff] [blame] | 1217 | printk(KERN_DEBUG "pcm_oss: read: " |
| 1218 | "recovering from XRUN\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1219 | else |
Takashi Iwai | 006de267 | 2009-02-05 15:51:04 +0100 | [diff] [blame] | 1220 | printk(KERN_DEBUG "pcm_oss: read: " |
| 1221 | "recovering from SUSPEND\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1222 | #endif |
| 1223 | ret = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DRAIN, NULL); |
| 1224 | if (ret < 0) |
| 1225 | break; |
| 1226 | } else if (runtime->status->state == SNDRV_PCM_STATE_SETUP) { |
| 1227 | ret = snd_pcm_oss_prepare(substream); |
| 1228 | if (ret < 0) |
| 1229 | break; |
| 1230 | } |
| 1231 | ret = snd_pcm_oss_capture_position_fixup(substream, &delay); |
| 1232 | if (ret < 0) |
| 1233 | break; |
| 1234 | if (in_kernel) { |
| 1235 | mm_segment_t fs; |
| 1236 | fs = snd_enter_user(); |
Clemens Ladisch | fea952e | 2011-02-14 11:00:47 +0100 | [diff] [blame] | 1237 | ret = snd_pcm_lib_read(substream, (void __force __user *)ptr, frames); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1238 | snd_leave_user(fs); |
| 1239 | } else { |
Clemens Ladisch | fea952e | 2011-02-14 11:00:47 +0100 | [diff] [blame] | 1240 | ret = snd_pcm_lib_read(substream, (void __force __user *)ptr, frames); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1241 | } |
| 1242 | if (ret == -EPIPE) { |
| 1243 | if (runtime->status->state == SNDRV_PCM_STATE_DRAINING) { |
| 1244 | ret = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DROP, NULL); |
| 1245 | if (ret < 0) |
| 1246 | break; |
| 1247 | } |
| 1248 | continue; |
| 1249 | } |
| 1250 | if (ret != -ESTRPIPE) |
| 1251 | break; |
| 1252 | } |
| 1253 | return ret; |
| 1254 | } |
| 1255 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1256 | 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] | 1257 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1258 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1259 | int ret; |
| 1260 | while (1) { |
| 1261 | if (runtime->status->state == SNDRV_PCM_STATE_XRUN || |
| 1262 | runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) { |
| 1263 | #ifdef OSS_DEBUG |
| 1264 | if (runtime->status->state == SNDRV_PCM_STATE_XRUN) |
Takashi Iwai | 006de267 | 2009-02-05 15:51:04 +0100 | [diff] [blame] | 1265 | printk(KERN_DEBUG "pcm_oss: writev: " |
| 1266 | "recovering from XRUN\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1267 | else |
Takashi Iwai | 006de267 | 2009-02-05 15:51:04 +0100 | [diff] [blame] | 1268 | printk(KERN_DEBUG "pcm_oss: writev: " |
| 1269 | "recovering from SUSPEND\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1270 | #endif |
| 1271 | ret = snd_pcm_oss_prepare(substream); |
| 1272 | if (ret < 0) |
| 1273 | break; |
| 1274 | } |
| 1275 | if (in_kernel) { |
| 1276 | mm_segment_t fs; |
| 1277 | fs = snd_enter_user(); |
| 1278 | ret = snd_pcm_lib_writev(substream, (void __user **)bufs, frames); |
| 1279 | snd_leave_user(fs); |
| 1280 | } else { |
| 1281 | ret = snd_pcm_lib_writev(substream, (void __user **)bufs, frames); |
| 1282 | } |
| 1283 | if (ret != -EPIPE && ret != -ESTRPIPE) |
| 1284 | break; |
| 1285 | |
| 1286 | /* test, if we can't store new data, because the stream */ |
| 1287 | /* has not been started */ |
| 1288 | if (runtime->status->state == SNDRV_PCM_STATE_PREPARED) |
| 1289 | return -EAGAIN; |
| 1290 | } |
| 1291 | return ret; |
| 1292 | } |
| 1293 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1294 | 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] | 1295 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1296 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1297 | int ret; |
| 1298 | while (1) { |
| 1299 | if (runtime->status->state == SNDRV_PCM_STATE_XRUN || |
| 1300 | runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) { |
| 1301 | #ifdef OSS_DEBUG |
| 1302 | if (runtime->status->state == SNDRV_PCM_STATE_XRUN) |
Takashi Iwai | 006de267 | 2009-02-05 15:51:04 +0100 | [diff] [blame] | 1303 | printk(KERN_DEBUG "pcm_oss: readv: " |
| 1304 | "recovering from XRUN\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1305 | else |
Takashi Iwai | 006de267 | 2009-02-05 15:51:04 +0100 | [diff] [blame] | 1306 | printk(KERN_DEBUG "pcm_oss: readv: " |
| 1307 | "recovering from SUSPEND\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1308 | #endif |
| 1309 | ret = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DRAIN, NULL); |
| 1310 | if (ret < 0) |
| 1311 | break; |
| 1312 | } else if (runtime->status->state == SNDRV_PCM_STATE_SETUP) { |
| 1313 | ret = snd_pcm_oss_prepare(substream); |
| 1314 | if (ret < 0) |
| 1315 | break; |
| 1316 | } |
| 1317 | if (in_kernel) { |
| 1318 | mm_segment_t fs; |
| 1319 | fs = snd_enter_user(); |
| 1320 | ret = snd_pcm_lib_readv(substream, (void __user **)bufs, frames); |
| 1321 | snd_leave_user(fs); |
| 1322 | } else { |
| 1323 | ret = snd_pcm_lib_readv(substream, (void __user **)bufs, frames); |
| 1324 | } |
| 1325 | if (ret != -EPIPE && ret != -ESTRPIPE) |
| 1326 | break; |
| 1327 | } |
| 1328 | return ret; |
| 1329 | } |
| 1330 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1331 | 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] | 1332 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1333 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1334 | snd_pcm_sframes_t frames, frames1; |
Jaroslav Kysela | 21a3479 | 2006-01-13 09:12:11 +0100 | [diff] [blame] | 1335 | #ifdef CONFIG_SND_PCM_OSS_PLUGINS |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1336 | if (runtime->oss.plugin_first) { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1337 | struct snd_pcm_plugin_channel *channels; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1338 | size_t oss_frame_bytes = (runtime->oss.plugin_first->src_width * runtime->oss.plugin_first->src_format.channels) / 8; |
| 1339 | if (!in_kernel) { |
Clemens Ladisch | fea952e | 2011-02-14 11:00:47 +0100 | [diff] [blame] | 1340 | if (copy_from_user(runtime->oss.buffer, (const char __force __user *)buf, bytes)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1341 | return -EFAULT; |
| 1342 | buf = runtime->oss.buffer; |
| 1343 | } |
| 1344 | frames = bytes / oss_frame_bytes; |
| 1345 | frames1 = snd_pcm_plug_client_channels_buf(substream, (char *)buf, frames, &channels); |
| 1346 | if (frames1 < 0) |
| 1347 | return frames1; |
| 1348 | frames1 = snd_pcm_plug_write_transfer(substream, channels, frames1); |
| 1349 | if (frames1 <= 0) |
| 1350 | return frames1; |
| 1351 | bytes = frames1 * oss_frame_bytes; |
Jaroslav Kysela | 21a3479 | 2006-01-13 09:12:11 +0100 | [diff] [blame] | 1352 | } else |
| 1353 | #endif |
| 1354 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1355 | frames = bytes_to_frames(runtime, bytes); |
| 1356 | frames1 = snd_pcm_oss_write3(substream, buf, frames, in_kernel); |
| 1357 | if (frames1 <= 0) |
| 1358 | return frames1; |
| 1359 | bytes = frames_to_bytes(runtime, frames1); |
| 1360 | } |
| 1361 | return bytes; |
| 1362 | } |
| 1363 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1364 | 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] | 1365 | { |
| 1366 | size_t xfer = 0; |
| 1367 | ssize_t tmp; |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1368 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1369 | |
Takashi Iwai | 9c323fc | 2006-04-28 15:13:41 +0200 | [diff] [blame] | 1370 | if (atomic_read(&substream->mmap_count)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1371 | return -ENXIO; |
| 1372 | |
| 1373 | if ((tmp = snd_pcm_oss_make_ready(substream)) < 0) |
| 1374 | return tmp; |
Takashi Iwai | e3a5d59 | 2006-11-14 13:03:19 +0100 | [diff] [blame] | 1375 | mutex_lock(&runtime->oss.params_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1376 | while (bytes > 0) { |
| 1377 | if (bytes < runtime->oss.period_bytes || runtime->oss.buffer_used > 0) { |
| 1378 | tmp = bytes; |
| 1379 | if (tmp + runtime->oss.buffer_used > runtime->oss.period_bytes) |
| 1380 | tmp = runtime->oss.period_bytes - runtime->oss.buffer_used; |
| 1381 | if (tmp > 0) { |
Takashi Iwai | e3a5d59 | 2006-11-14 13:03:19 +0100 | [diff] [blame] | 1382 | if (copy_from_user(runtime->oss.buffer + runtime->oss.buffer_used, buf, tmp)) { |
| 1383 | tmp = -EFAULT; |
| 1384 | goto err; |
| 1385 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1386 | } |
| 1387 | runtime->oss.buffer_used += tmp; |
| 1388 | buf += tmp; |
| 1389 | bytes -= tmp; |
| 1390 | xfer += tmp; |
Takashi Iwai | 060d77b | 2006-03-27 16:44:52 +0200 | [diff] [blame] | 1391 | if (substream->oss.setup.partialfrag || |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1392 | runtime->oss.buffer_used == runtime->oss.period_bytes) { |
| 1393 | tmp = snd_pcm_oss_write2(substream, runtime->oss.buffer + runtime->oss.period_ptr, |
| 1394 | runtime->oss.buffer_used - runtime->oss.period_ptr, 1); |
| 1395 | if (tmp <= 0) |
Takashi Iwai | e3a5d59 | 2006-11-14 13:03:19 +0100 | [diff] [blame] | 1396 | goto err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1397 | runtime->oss.bytes += tmp; |
| 1398 | runtime->oss.period_ptr += tmp; |
| 1399 | runtime->oss.period_ptr %= runtime->oss.period_bytes; |
| 1400 | if (runtime->oss.period_ptr == 0 || |
| 1401 | runtime->oss.period_ptr == runtime->oss.buffer_used) |
| 1402 | runtime->oss.buffer_used = 0; |
Takashi Iwai | e3a5d59 | 2006-11-14 13:03:19 +0100 | [diff] [blame] | 1403 | else if ((substream->f_flags & O_NONBLOCK) != 0) { |
| 1404 | tmp = -EAGAIN; |
| 1405 | goto err; |
| 1406 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1407 | } |
| 1408 | } else { |
Clemens Ladisch | 4d23359 | 2005-09-05 10:35:20 +0200 | [diff] [blame] | 1409 | tmp = snd_pcm_oss_write2(substream, |
| 1410 | (const char __force *)buf, |
| 1411 | runtime->oss.period_bytes, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1412 | if (tmp <= 0) |
Takashi Iwai | e3a5d59 | 2006-11-14 13:03:19 +0100 | [diff] [blame] | 1413 | goto err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1414 | runtime->oss.bytes += tmp; |
| 1415 | buf += tmp; |
| 1416 | bytes -= tmp; |
| 1417 | xfer += tmp; |
Takashi Iwai | 0df63e4 | 2006-04-28 15:13:41 +0200 | [diff] [blame] | 1418 | if ((substream->f_flags & O_NONBLOCK) != 0 && |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1419 | tmp != runtime->oss.period_bytes) |
| 1420 | break; |
| 1421 | } |
| 1422 | } |
Takashi Iwai | e3a5d59 | 2006-11-14 13:03:19 +0100 | [diff] [blame] | 1423 | mutex_unlock(&runtime->oss.params_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1424 | return xfer; |
Takashi Iwai | e3a5d59 | 2006-11-14 13:03:19 +0100 | [diff] [blame] | 1425 | |
| 1426 | err: |
| 1427 | mutex_unlock(&runtime->oss.params_lock); |
| 1428 | return xfer > 0 ? (snd_pcm_sframes_t)xfer : tmp; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1429 | } |
| 1430 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1431 | 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] | 1432 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1433 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1434 | snd_pcm_sframes_t frames, frames1; |
Jaroslav Kysela | 21a3479 | 2006-01-13 09:12:11 +0100 | [diff] [blame] | 1435 | #ifdef CONFIG_SND_PCM_OSS_PLUGINS |
Clemens Ladisch | fea952e | 2011-02-14 11:00:47 +0100 | [diff] [blame] | 1436 | char __user *final_dst = (char __force __user *)buf; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1437 | if (runtime->oss.plugin_first) { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1438 | struct snd_pcm_plugin_channel *channels; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1439 | size_t oss_frame_bytes = (runtime->oss.plugin_last->dst_width * runtime->oss.plugin_last->dst_format.channels) / 8; |
| 1440 | if (!in_kernel) |
| 1441 | buf = runtime->oss.buffer; |
| 1442 | frames = bytes / oss_frame_bytes; |
| 1443 | frames1 = snd_pcm_plug_client_channels_buf(substream, buf, frames, &channels); |
| 1444 | if (frames1 < 0) |
| 1445 | return frames1; |
| 1446 | frames1 = snd_pcm_plug_read_transfer(substream, channels, frames1); |
| 1447 | if (frames1 <= 0) |
| 1448 | return frames1; |
| 1449 | bytes = frames1 * oss_frame_bytes; |
| 1450 | if (!in_kernel && copy_to_user(final_dst, buf, bytes)) |
| 1451 | return -EFAULT; |
Jaroslav Kysela | 21a3479 | 2006-01-13 09:12:11 +0100 | [diff] [blame] | 1452 | } else |
| 1453 | #endif |
| 1454 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1455 | frames = bytes_to_frames(runtime, bytes); |
| 1456 | frames1 = snd_pcm_oss_read3(substream, buf, frames, in_kernel); |
| 1457 | if (frames1 <= 0) |
| 1458 | return frames1; |
| 1459 | bytes = frames_to_bytes(runtime, frames1); |
| 1460 | } |
| 1461 | return bytes; |
| 1462 | } |
| 1463 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1464 | 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] | 1465 | { |
| 1466 | size_t xfer = 0; |
| 1467 | ssize_t tmp; |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1468 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1469 | |
Takashi Iwai | 9c323fc | 2006-04-28 15:13:41 +0200 | [diff] [blame] | 1470 | if (atomic_read(&substream->mmap_count)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1471 | return -ENXIO; |
| 1472 | |
| 1473 | if ((tmp = snd_pcm_oss_make_ready(substream)) < 0) |
| 1474 | return tmp; |
Takashi Iwai | e3a5d59 | 2006-11-14 13:03:19 +0100 | [diff] [blame] | 1475 | mutex_lock(&runtime->oss.params_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1476 | while (bytes > 0) { |
| 1477 | if (bytes < runtime->oss.period_bytes || runtime->oss.buffer_used > 0) { |
| 1478 | if (runtime->oss.buffer_used == 0) { |
| 1479 | tmp = snd_pcm_oss_read2(substream, runtime->oss.buffer, runtime->oss.period_bytes, 1); |
| 1480 | if (tmp <= 0) |
Takashi Iwai | e3a5d59 | 2006-11-14 13:03:19 +0100 | [diff] [blame] | 1481 | goto err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1482 | runtime->oss.bytes += tmp; |
| 1483 | runtime->oss.period_ptr = tmp; |
| 1484 | runtime->oss.buffer_used = tmp; |
| 1485 | } |
| 1486 | tmp = bytes; |
| 1487 | if ((size_t) tmp > runtime->oss.buffer_used) |
| 1488 | tmp = runtime->oss.buffer_used; |
Takashi Iwai | e3a5d59 | 2006-11-14 13:03:19 +0100 | [diff] [blame] | 1489 | if (copy_to_user(buf, runtime->oss.buffer + (runtime->oss.period_ptr - runtime->oss.buffer_used), tmp)) { |
| 1490 | tmp = -EFAULT; |
| 1491 | goto err; |
| 1492 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1493 | buf += tmp; |
| 1494 | bytes -= tmp; |
| 1495 | xfer += tmp; |
| 1496 | runtime->oss.buffer_used -= tmp; |
| 1497 | } else { |
Clemens Ladisch | 4d23359 | 2005-09-05 10:35:20 +0200 | [diff] [blame] | 1498 | tmp = snd_pcm_oss_read2(substream, (char __force *)buf, |
| 1499 | runtime->oss.period_bytes, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1500 | if (tmp <= 0) |
Takashi Iwai | e3a5d59 | 2006-11-14 13:03:19 +0100 | [diff] [blame] | 1501 | goto err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1502 | runtime->oss.bytes += tmp; |
| 1503 | buf += tmp; |
| 1504 | bytes -= tmp; |
| 1505 | xfer += tmp; |
| 1506 | } |
| 1507 | } |
Takashi Iwai | e3a5d59 | 2006-11-14 13:03:19 +0100 | [diff] [blame] | 1508 | mutex_unlock(&runtime->oss.params_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1509 | return xfer; |
Takashi Iwai | e3a5d59 | 2006-11-14 13:03:19 +0100 | [diff] [blame] | 1510 | |
| 1511 | err: |
| 1512 | mutex_unlock(&runtime->oss.params_lock); |
| 1513 | return xfer > 0 ? (snd_pcm_sframes_t)xfer : tmp; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1514 | } |
| 1515 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1516 | 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] | 1517 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1518 | struct snd_pcm_substream *substream; |
Takashi Iwai | 60686aa | 2010-11-30 08:14:21 +0100 | [diff] [blame] | 1519 | struct snd_pcm_runtime *runtime; |
| 1520 | int i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1521 | |
Takashi Iwai | 60686aa | 2010-11-30 08:14:21 +0100 | [diff] [blame] | 1522 | for (i = 0; i < 2; i++) { |
| 1523 | substream = pcm_oss_file->streams[i]; |
| 1524 | if (!substream) |
| 1525 | continue; |
| 1526 | runtime = substream->runtime; |
Takashi Iwai | bf1bbb5 | 2006-03-27 16:22:45 +0200 | [diff] [blame] | 1527 | snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DROP, NULL); |
Takashi Iwai | 60686aa | 2010-11-30 08:14:21 +0100 | [diff] [blame] | 1528 | runtime->oss.prepare = 1; |
| 1529 | runtime->oss.buffer_used = 0; |
| 1530 | runtime->oss.prev_hw_ptr_period = 0; |
| 1531 | runtime->oss.period_ptr = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1532 | } |
| 1533 | return 0; |
| 1534 | } |
| 1535 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1536 | 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] | 1537 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1538 | struct snd_pcm_substream *substream; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1539 | int err; |
| 1540 | |
| 1541 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK]; |
| 1542 | if (substream != NULL) { |
| 1543 | if ((err = snd_pcm_oss_make_ready(substream)) < 0) |
| 1544 | return err; |
Takashi Iwai | bf1bbb5 | 2006-03-27 16:22:45 +0200 | [diff] [blame] | 1545 | snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_START, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1546 | } |
| 1547 | /* note: all errors from the start action are ignored */ |
| 1548 | /* OSS apps do not know, how to handle them */ |
| 1549 | return 0; |
| 1550 | } |
| 1551 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1552 | 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] | 1553 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1554 | struct snd_pcm_runtime *runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1555 | ssize_t result = 0; |
Clemens Ladisch | fea952e | 2011-02-14 11:00:47 +0100 | [diff] [blame] | 1556 | snd_pcm_state_t state; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1557 | long res; |
| 1558 | wait_queue_t wait; |
| 1559 | |
| 1560 | runtime = substream->runtime; |
| 1561 | init_waitqueue_entry(&wait, current); |
| 1562 | add_wait_queue(&runtime->sleep, &wait); |
| 1563 | #ifdef OSS_DEBUG |
Takashi Iwai | 006de267 | 2009-02-05 15:51:04 +0100 | [diff] [blame] | 1564 | printk(KERN_DEBUG "sync1: size = %li\n", size); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1565 | #endif |
| 1566 | while (1) { |
| 1567 | result = snd_pcm_oss_write2(substream, runtime->oss.buffer, size, 1); |
| 1568 | if (result > 0) { |
| 1569 | runtime->oss.buffer_used = 0; |
| 1570 | result = 0; |
| 1571 | break; |
| 1572 | } |
| 1573 | if (result != 0 && result != -EAGAIN) |
| 1574 | break; |
| 1575 | result = 0; |
| 1576 | set_current_state(TASK_INTERRUPTIBLE); |
| 1577 | snd_pcm_stream_lock_irq(substream); |
Clemens Ladisch | fea952e | 2011-02-14 11:00:47 +0100 | [diff] [blame] | 1578 | state = runtime->status->state; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1579 | snd_pcm_stream_unlock_irq(substream); |
Clemens Ladisch | fea952e | 2011-02-14 11:00:47 +0100 | [diff] [blame] | 1580 | if (state != SNDRV_PCM_STATE_RUNNING) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1581 | set_current_state(TASK_RUNNING); |
| 1582 | break; |
| 1583 | } |
| 1584 | res = schedule_timeout(10 * HZ); |
| 1585 | if (signal_pending(current)) { |
| 1586 | result = -ERESTARTSYS; |
| 1587 | break; |
| 1588 | } |
| 1589 | if (res == 0) { |
| 1590 | snd_printk(KERN_ERR "OSS sync error - DMA timeout\n"); |
| 1591 | result = -EIO; |
| 1592 | break; |
| 1593 | } |
| 1594 | } |
| 1595 | remove_wait_queue(&runtime->sleep, &wait); |
| 1596 | return result; |
| 1597 | } |
| 1598 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1599 | 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] | 1600 | { |
| 1601 | int err = 0; |
| 1602 | unsigned int saved_f_flags; |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1603 | struct snd_pcm_substream *substream; |
| 1604 | struct snd_pcm_runtime *runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1605 | snd_pcm_format_t format; |
| 1606 | unsigned long width; |
| 1607 | size_t size; |
| 1608 | |
| 1609 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK]; |
| 1610 | if (substream != NULL) { |
| 1611 | runtime = substream->runtime; |
Takashi Iwai | 9c323fc | 2006-04-28 15:13:41 +0200 | [diff] [blame] | 1612 | if (atomic_read(&substream->mmap_count)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1613 | goto __direct; |
| 1614 | if ((err = snd_pcm_oss_make_ready(substream)) < 0) |
| 1615 | return err; |
| 1616 | format = snd_pcm_oss_format_from(runtime->oss.format); |
| 1617 | width = snd_pcm_format_physical_width(format); |
Takashi Iwai | e3a5d59 | 2006-11-14 13:03:19 +0100 | [diff] [blame] | 1618 | mutex_lock(&runtime->oss.params_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1619 | if (runtime->oss.buffer_used > 0) { |
| 1620 | #ifdef OSS_DEBUG |
Takashi Iwai | 006de267 | 2009-02-05 15:51:04 +0100 | [diff] [blame] | 1621 | printk(KERN_DEBUG "sync: buffer_used\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1622 | #endif |
| 1623 | size = (8 * (runtime->oss.period_bytes - runtime->oss.buffer_used) + 7) / width; |
| 1624 | snd_pcm_format_set_silence(format, |
| 1625 | runtime->oss.buffer + runtime->oss.buffer_used, |
| 1626 | size); |
| 1627 | err = snd_pcm_oss_sync1(substream, runtime->oss.period_bytes); |
Takashi Iwai | e3a5d59 | 2006-11-14 13:03:19 +0100 | [diff] [blame] | 1628 | if (err < 0) { |
| 1629 | mutex_unlock(&runtime->oss.params_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1630 | return err; |
Takashi Iwai | e3a5d59 | 2006-11-14 13:03:19 +0100 | [diff] [blame] | 1631 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1632 | } else if (runtime->oss.period_ptr > 0) { |
| 1633 | #ifdef OSS_DEBUG |
Takashi Iwai | 006de267 | 2009-02-05 15:51:04 +0100 | [diff] [blame] | 1634 | printk(KERN_DEBUG "sync: period_ptr\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1635 | #endif |
| 1636 | size = runtime->oss.period_bytes - runtime->oss.period_ptr; |
| 1637 | snd_pcm_format_set_silence(format, |
| 1638 | runtime->oss.buffer, |
| 1639 | size * 8 / width); |
| 1640 | err = snd_pcm_oss_sync1(substream, size); |
Takashi Iwai | e3a5d59 | 2006-11-14 13:03:19 +0100 | [diff] [blame] | 1641 | if (err < 0) { |
| 1642 | mutex_unlock(&runtime->oss.params_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1643 | return err; |
Takashi Iwai | e3a5d59 | 2006-11-14 13:03:19 +0100 | [diff] [blame] | 1644 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1645 | } |
| 1646 | /* |
| 1647 | * The ALSA's period might be a bit large than OSS one. |
| 1648 | * Fill the remain portion of ALSA period with zeros. |
| 1649 | */ |
| 1650 | size = runtime->control->appl_ptr % runtime->period_size; |
| 1651 | if (size > 0) { |
| 1652 | size = runtime->period_size - size; |
| 1653 | if (runtime->access == SNDRV_PCM_ACCESS_RW_INTERLEAVED) { |
| 1654 | size = (runtime->frame_bits * size) / 8; |
| 1655 | while (size > 0) { |
| 1656 | mm_segment_t fs; |
| 1657 | size_t size1 = size < runtime->oss.period_bytes ? size : runtime->oss.period_bytes; |
| 1658 | size -= size1; |
| 1659 | size1 *= 8; |
| 1660 | size1 /= runtime->sample_bits; |
| 1661 | snd_pcm_format_set_silence(runtime->format, |
| 1662 | runtime->oss.buffer, |
| 1663 | size1); |
Takashi Iwai | 4939c66 | 2008-01-28 23:53:41 +0100 | [diff] [blame] | 1664 | size1 /= runtime->channels; /* frames */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1665 | fs = snd_enter_user(); |
Clemens Ladisch | fea952e | 2011-02-14 11:00:47 +0100 | [diff] [blame] | 1666 | snd_pcm_lib_write(substream, (void __force __user *)runtime->oss.buffer, size1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1667 | snd_leave_user(fs); |
| 1668 | } |
| 1669 | } else if (runtime->access == SNDRV_PCM_ACCESS_RW_NONINTERLEAVED) { |
| 1670 | void __user *buffers[runtime->channels]; |
| 1671 | memset(buffers, 0, runtime->channels * sizeof(void *)); |
| 1672 | snd_pcm_lib_writev(substream, buffers, size); |
| 1673 | } |
| 1674 | } |
Takashi Iwai | e3a5d59 | 2006-11-14 13:03:19 +0100 | [diff] [blame] | 1675 | mutex_unlock(&runtime->oss.params_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1676 | /* |
| 1677 | * finish sync: drain the buffer |
| 1678 | */ |
| 1679 | __direct: |
Takashi Iwai | 0df63e4 | 2006-04-28 15:13:41 +0200 | [diff] [blame] | 1680 | saved_f_flags = substream->f_flags; |
| 1681 | substream->f_flags &= ~O_NONBLOCK; |
Takashi Iwai | bf1bbb5 | 2006-03-27 16:22:45 +0200 | [diff] [blame] | 1682 | err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DRAIN, NULL); |
Takashi Iwai | 0df63e4 | 2006-04-28 15:13:41 +0200 | [diff] [blame] | 1683 | substream->f_flags = saved_f_flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1684 | if (err < 0) |
| 1685 | return err; |
| 1686 | runtime->oss.prepare = 1; |
| 1687 | } |
| 1688 | |
| 1689 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE]; |
| 1690 | if (substream != NULL) { |
| 1691 | if ((err = snd_pcm_oss_make_ready(substream)) < 0) |
| 1692 | return err; |
| 1693 | runtime = substream->runtime; |
Takashi Iwai | bf1bbb5 | 2006-03-27 16:22:45 +0200 | [diff] [blame] | 1694 | err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DROP, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1695 | if (err < 0) |
| 1696 | return err; |
| 1697 | runtime->oss.buffer_used = 0; |
| 1698 | runtime->oss.prepare = 1; |
| 1699 | } |
| 1700 | return 0; |
| 1701 | } |
| 1702 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1703 | 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] | 1704 | { |
| 1705 | int idx; |
| 1706 | |
| 1707 | for (idx = 1; idx >= 0; --idx) { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1708 | struct snd_pcm_substream *substream = pcm_oss_file->streams[idx]; |
| 1709 | struct snd_pcm_runtime *runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1710 | if (substream == NULL) |
| 1711 | continue; |
| 1712 | runtime = substream->runtime; |
| 1713 | if (rate < 1000) |
| 1714 | rate = 1000; |
| 1715 | else if (rate > 192000) |
| 1716 | rate = 192000; |
| 1717 | if (runtime->oss.rate != rate) { |
| 1718 | runtime->oss.params = 1; |
| 1719 | runtime->oss.rate = rate; |
| 1720 | } |
| 1721 | } |
| 1722 | return snd_pcm_oss_get_rate(pcm_oss_file); |
| 1723 | } |
| 1724 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1725 | 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] | 1726 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1727 | struct snd_pcm_substream *substream; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1728 | int err; |
| 1729 | |
| 1730 | if ((err = snd_pcm_oss_get_active_substream(pcm_oss_file, &substream)) < 0) |
| 1731 | return err; |
| 1732 | return substream->runtime->oss.rate; |
| 1733 | } |
| 1734 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1735 | 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] | 1736 | { |
| 1737 | int idx; |
| 1738 | if (channels < 1) |
| 1739 | channels = 1; |
| 1740 | if (channels > 128) |
| 1741 | return -EINVAL; |
| 1742 | for (idx = 1; idx >= 0; --idx) { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1743 | struct snd_pcm_substream *substream = pcm_oss_file->streams[idx]; |
| 1744 | struct snd_pcm_runtime *runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1745 | if (substream == NULL) |
| 1746 | continue; |
| 1747 | runtime = substream->runtime; |
| 1748 | if (runtime->oss.channels != channels) { |
| 1749 | runtime->oss.params = 1; |
| 1750 | runtime->oss.channels = channels; |
| 1751 | } |
| 1752 | } |
| 1753 | return snd_pcm_oss_get_channels(pcm_oss_file); |
| 1754 | } |
| 1755 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1756 | 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] | 1757 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1758 | struct snd_pcm_substream *substream; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1759 | int err; |
| 1760 | |
| 1761 | if ((err = snd_pcm_oss_get_active_substream(pcm_oss_file, &substream)) < 0) |
| 1762 | return err; |
| 1763 | return substream->runtime->oss.channels; |
| 1764 | } |
| 1765 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1766 | 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] | 1767 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1768 | struct snd_pcm_substream *substream; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1769 | int err; |
| 1770 | |
| 1771 | if ((err = snd_pcm_oss_get_active_substream(pcm_oss_file, &substream)) < 0) |
| 1772 | return err; |
| 1773 | return substream->runtime->oss.period_bytes; |
| 1774 | } |
| 1775 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1776 | 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] | 1777 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1778 | struct snd_pcm_substream *substream; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1779 | int err; |
| 1780 | int direct; |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1781 | struct snd_pcm_hw_params *params; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1782 | unsigned int formats = 0; |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1783 | struct snd_mask format_mask; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1784 | int fmt; |
| 1785 | |
| 1786 | if ((err = snd_pcm_oss_get_active_substream(pcm_oss_file, &substream)) < 0) |
| 1787 | return err; |
Takashi Iwai | 9c323fc | 2006-04-28 15:13:41 +0200 | [diff] [blame] | 1788 | if (atomic_read(&substream->mmap_count)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1789 | direct = 1; |
Takashi Iwai | 060d77b | 2006-03-27 16:44:52 +0200 | [diff] [blame] | 1790 | else |
| 1791 | direct = substream->oss.setup.direct; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1792 | if (!direct) |
| 1793 | return AFMT_MU_LAW | AFMT_U8 | |
| 1794 | AFMT_S16_LE | AFMT_S16_BE | |
| 1795 | AFMT_S8 | AFMT_U16_LE | |
Takashi Iwai | 24038a2 | 2007-08-08 17:00:32 +0200 | [diff] [blame] | 1796 | AFMT_U16_BE | |
| 1797 | AFMT_S32_LE | AFMT_S32_BE | |
Roel Kluin | 7924f0c | 2009-02-04 18:14:55 +0100 | [diff] [blame] | 1798 | AFMT_S24_LE | AFMT_S24_BE | |
Takashi Iwai | 24038a2 | 2007-08-08 17:00:32 +0200 | [diff] [blame] | 1799 | AFMT_S24_PACKED; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1800 | params = kmalloc(sizeof(*params), GFP_KERNEL); |
| 1801 | if (!params) |
| 1802 | return -ENOMEM; |
| 1803 | _snd_pcm_hw_params_any(params); |
| 1804 | err = snd_pcm_hw_refine(substream, params); |
| 1805 | format_mask = *hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT); |
| 1806 | kfree(params); |
Takashi Iwai | 7eaa943 | 2008-08-08 17:09:09 +0200 | [diff] [blame] | 1807 | if (err < 0) |
| 1808 | return err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1809 | for (fmt = 0; fmt < 32; ++fmt) { |
| 1810 | if (snd_mask_test(&format_mask, fmt)) { |
| 1811 | int f = snd_pcm_oss_format_to(fmt); |
| 1812 | if (f >= 0) |
| 1813 | formats |= f; |
| 1814 | } |
| 1815 | } |
| 1816 | return formats; |
| 1817 | } |
| 1818 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1819 | 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] | 1820 | { |
| 1821 | int formats, idx; |
| 1822 | |
| 1823 | if (format != AFMT_QUERY) { |
| 1824 | formats = snd_pcm_oss_get_formats(pcm_oss_file); |
Steven Finney | 5c59e09 | 2006-04-13 12:49:31 +0200 | [diff] [blame] | 1825 | if (formats < 0) |
| 1826 | return formats; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1827 | if (!(formats & format)) |
| 1828 | format = AFMT_U8; |
| 1829 | for (idx = 1; idx >= 0; --idx) { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1830 | struct snd_pcm_substream *substream = pcm_oss_file->streams[idx]; |
| 1831 | struct snd_pcm_runtime *runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1832 | if (substream == NULL) |
| 1833 | continue; |
| 1834 | runtime = substream->runtime; |
| 1835 | if (runtime->oss.format != format) { |
| 1836 | runtime->oss.params = 1; |
| 1837 | runtime->oss.format = format; |
| 1838 | } |
| 1839 | } |
| 1840 | } |
| 1841 | return snd_pcm_oss_get_format(pcm_oss_file); |
| 1842 | } |
| 1843 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1844 | 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] | 1845 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1846 | struct snd_pcm_substream *substream; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1847 | int err; |
| 1848 | |
| 1849 | if ((err = snd_pcm_oss_get_active_substream(pcm_oss_file, &substream)) < 0) |
| 1850 | return err; |
| 1851 | return substream->runtime->oss.format; |
| 1852 | } |
| 1853 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1854 | 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] | 1855 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1856 | struct snd_pcm_runtime *runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1857 | |
| 1858 | if (substream == NULL) |
| 1859 | return 0; |
| 1860 | runtime = substream->runtime; |
| 1861 | if (subdivide == 0) { |
| 1862 | subdivide = runtime->oss.subdivision; |
| 1863 | if (subdivide == 0) |
| 1864 | subdivide = 1; |
| 1865 | return subdivide; |
| 1866 | } |
| 1867 | if (runtime->oss.subdivision || runtime->oss.fragshift) |
| 1868 | return -EINVAL; |
| 1869 | if (subdivide != 1 && subdivide != 2 && subdivide != 4 && |
| 1870 | subdivide != 8 && subdivide != 16) |
| 1871 | return -EINVAL; |
| 1872 | runtime->oss.subdivision = subdivide; |
| 1873 | runtime->oss.params = 1; |
| 1874 | return subdivide; |
| 1875 | } |
| 1876 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1877 | 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] | 1878 | { |
| 1879 | int err = -EINVAL, idx; |
| 1880 | |
| 1881 | for (idx = 1; idx >= 0; --idx) { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1882 | struct snd_pcm_substream *substream = pcm_oss_file->streams[idx]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1883 | if (substream == NULL) |
| 1884 | continue; |
| 1885 | if ((err = snd_pcm_oss_set_subdivide1(substream, subdivide)) < 0) |
| 1886 | return err; |
| 1887 | } |
| 1888 | return err; |
| 1889 | } |
| 1890 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1891 | 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] | 1892 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1893 | struct snd_pcm_runtime *runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1894 | |
| 1895 | if (substream == NULL) |
| 1896 | return 0; |
| 1897 | runtime = substream->runtime; |
| 1898 | if (runtime->oss.subdivision || runtime->oss.fragshift) |
| 1899 | return -EINVAL; |
| 1900 | runtime->oss.fragshift = val & 0xffff; |
| 1901 | runtime->oss.maxfrags = (val >> 16) & 0xffff; |
| 1902 | if (runtime->oss.fragshift < 4) /* < 16 */ |
| 1903 | runtime->oss.fragshift = 4; |
| 1904 | if (runtime->oss.maxfrags < 2) |
| 1905 | runtime->oss.maxfrags = 2; |
| 1906 | runtime->oss.params = 1; |
| 1907 | return 0; |
| 1908 | } |
| 1909 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1910 | 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] | 1911 | { |
| 1912 | int err = -EINVAL, idx; |
| 1913 | |
| 1914 | for (idx = 1; idx >= 0; --idx) { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1915 | struct snd_pcm_substream *substream = pcm_oss_file->streams[idx]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1916 | if (substream == NULL) |
| 1917 | continue; |
| 1918 | if ((err = snd_pcm_oss_set_fragment1(substream, val)) < 0) |
| 1919 | return err; |
| 1920 | } |
| 1921 | return err; |
| 1922 | } |
| 1923 | |
| 1924 | static int snd_pcm_oss_nonblock(struct file * file) |
| 1925 | { |
Jonathan Corbet | db1dd4d | 2009-02-06 15:25:24 -0700 | [diff] [blame] | 1926 | spin_lock(&file->f_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1927 | file->f_flags |= O_NONBLOCK; |
Jonathan Corbet | db1dd4d | 2009-02-06 15:25:24 -0700 | [diff] [blame] | 1928 | spin_unlock(&file->f_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1929 | return 0; |
| 1930 | } |
| 1931 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1932 | 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] | 1933 | { |
| 1934 | |
| 1935 | if (substream == NULL) { |
| 1936 | res &= ~DSP_CAP_DUPLEX; |
| 1937 | return res; |
| 1938 | } |
| 1939 | #ifdef DSP_CAP_MULTI |
| 1940 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) |
| 1941 | if (substream->pstr->substream_count > 1) |
| 1942 | res |= DSP_CAP_MULTI; |
| 1943 | #endif |
| 1944 | /* DSP_CAP_REALTIME is set all times: */ |
| 1945 | /* all ALSA drivers can return actual pointer in ring buffer */ |
| 1946 | #if defined(DSP_CAP_REALTIME) && 0 |
| 1947 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1948 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1949 | if (runtime->info & (SNDRV_PCM_INFO_BLOCK_TRANSFER|SNDRV_PCM_INFO_BATCH)) |
| 1950 | res &= ~DSP_CAP_REALTIME; |
| 1951 | } |
| 1952 | #endif |
| 1953 | return res; |
| 1954 | } |
| 1955 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1956 | 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] | 1957 | { |
| 1958 | int result, idx; |
| 1959 | |
| 1960 | result = DSP_CAP_TRIGGER | DSP_CAP_MMAP | DSP_CAP_DUPLEX | DSP_CAP_REALTIME; |
| 1961 | for (idx = 0; idx < 2; idx++) { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1962 | struct snd_pcm_substream *substream = pcm_oss_file->streams[idx]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1963 | result = snd_pcm_oss_get_caps1(substream, result); |
| 1964 | } |
| 1965 | result |= 0x0001; /* revision - same as SB AWE 64 */ |
| 1966 | return result; |
| 1967 | } |
| 1968 | |
Jaroslav Kysela | f240406 | 2010-01-05 17:19:34 +0100 | [diff] [blame] | 1969 | static void snd_pcm_oss_simulate_fill(struct snd_pcm_substream *substream, |
| 1970 | snd_pcm_uframes_t hw_ptr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1971 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1972 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1973 | snd_pcm_uframes_t appl_ptr; |
| 1974 | appl_ptr = hw_ptr + runtime->buffer_size; |
| 1975 | appl_ptr %= runtime->boundary; |
| 1976 | runtime->control->appl_ptr = appl_ptr; |
| 1977 | } |
| 1978 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1979 | 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] | 1980 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1981 | struct snd_pcm_runtime *runtime; |
| 1982 | struct snd_pcm_substream *psubstream = NULL, *csubstream = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1983 | int err, cmd; |
| 1984 | |
| 1985 | #ifdef OSS_DEBUG |
Takashi Iwai | 006de267 | 2009-02-05 15:51:04 +0100 | [diff] [blame] | 1986 | printk(KERN_DEBUG "pcm_oss: trigger = 0x%x\n", trigger); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1987 | #endif |
| 1988 | |
| 1989 | psubstream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK]; |
| 1990 | csubstream = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE]; |
| 1991 | |
| 1992 | if (psubstream) { |
| 1993 | if ((err = snd_pcm_oss_make_ready(psubstream)) < 0) |
| 1994 | return err; |
| 1995 | } |
| 1996 | if (csubstream) { |
| 1997 | if ((err = snd_pcm_oss_make_ready(csubstream)) < 0) |
| 1998 | return err; |
| 1999 | } |
| 2000 | if (psubstream) { |
| 2001 | runtime = psubstream->runtime; |
| 2002 | if (trigger & PCM_ENABLE_OUTPUT) { |
| 2003 | if (runtime->oss.trigger) |
| 2004 | goto _skip1; |
Takashi Iwai | 9c323fc | 2006-04-28 15:13:41 +0200 | [diff] [blame] | 2005 | if (atomic_read(&psubstream->mmap_count)) |
Jaroslav Kysela | f240406 | 2010-01-05 17:19:34 +0100 | [diff] [blame] | 2006 | snd_pcm_oss_simulate_fill(psubstream, |
| 2007 | get_hw_ptr_period(runtime)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2008 | runtime->oss.trigger = 1; |
| 2009 | runtime->start_threshold = 1; |
| 2010 | cmd = SNDRV_PCM_IOCTL_START; |
| 2011 | } else { |
| 2012 | if (!runtime->oss.trigger) |
| 2013 | goto _skip1; |
| 2014 | runtime->oss.trigger = 0; |
| 2015 | runtime->start_threshold = runtime->boundary; |
| 2016 | cmd = SNDRV_PCM_IOCTL_DROP; |
| 2017 | runtime->oss.prepare = 1; |
| 2018 | } |
Takashi Iwai | bf1bbb5 | 2006-03-27 16:22:45 +0200 | [diff] [blame] | 2019 | err = snd_pcm_kernel_ioctl(psubstream, cmd, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2020 | if (err < 0) |
| 2021 | return err; |
| 2022 | } |
| 2023 | _skip1: |
| 2024 | if (csubstream) { |
| 2025 | runtime = csubstream->runtime; |
| 2026 | if (trigger & PCM_ENABLE_INPUT) { |
| 2027 | if (runtime->oss.trigger) |
| 2028 | goto _skip2; |
| 2029 | runtime->oss.trigger = 1; |
| 2030 | runtime->start_threshold = 1; |
| 2031 | cmd = SNDRV_PCM_IOCTL_START; |
| 2032 | } else { |
| 2033 | if (!runtime->oss.trigger) |
| 2034 | goto _skip2; |
| 2035 | runtime->oss.trigger = 0; |
| 2036 | runtime->start_threshold = runtime->boundary; |
| 2037 | cmd = SNDRV_PCM_IOCTL_DROP; |
| 2038 | runtime->oss.prepare = 1; |
| 2039 | } |
Takashi Iwai | bf1bbb5 | 2006-03-27 16:22:45 +0200 | [diff] [blame] | 2040 | err = snd_pcm_kernel_ioctl(csubstream, cmd, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2041 | if (err < 0) |
| 2042 | return err; |
| 2043 | } |
| 2044 | _skip2: |
| 2045 | return 0; |
| 2046 | } |
| 2047 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2048 | 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] | 2049 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2050 | struct snd_pcm_substream *psubstream = NULL, *csubstream = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2051 | int result = 0; |
| 2052 | |
| 2053 | psubstream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK]; |
| 2054 | csubstream = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE]; |
| 2055 | if (psubstream && psubstream->runtime && psubstream->runtime->oss.trigger) |
| 2056 | result |= PCM_ENABLE_OUTPUT; |
| 2057 | if (csubstream && csubstream->runtime && csubstream->runtime->oss.trigger) |
| 2058 | result |= PCM_ENABLE_INPUT; |
| 2059 | return result; |
| 2060 | } |
| 2061 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2062 | 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] | 2063 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2064 | struct snd_pcm_substream *substream; |
| 2065 | struct snd_pcm_runtime *runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2066 | snd_pcm_sframes_t delay; |
| 2067 | int err; |
| 2068 | |
| 2069 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK]; |
| 2070 | if (substream == NULL) |
| 2071 | return -EINVAL; |
| 2072 | if ((err = snd_pcm_oss_make_ready(substream)) < 0) |
| 2073 | return err; |
| 2074 | runtime = substream->runtime; |
| 2075 | if (runtime->oss.params || runtime->oss.prepare) |
| 2076 | return 0; |
Takashi Iwai | bf1bbb5 | 2006-03-27 16:22:45 +0200 | [diff] [blame] | 2077 | err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DELAY, &delay); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2078 | if (err == -EPIPE) |
| 2079 | delay = 0; /* hack for broken OSS applications */ |
| 2080 | else if (err < 0) |
| 2081 | return err; |
| 2082 | return snd_pcm_oss_bytes(substream, delay); |
| 2083 | } |
| 2084 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2085 | 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] | 2086 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2087 | struct snd_pcm_substream *substream; |
| 2088 | struct snd_pcm_runtime *runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2089 | snd_pcm_sframes_t delay; |
| 2090 | int fixup; |
| 2091 | struct count_info info; |
| 2092 | int err; |
| 2093 | |
| 2094 | if (_info == NULL) |
| 2095 | return -EFAULT; |
| 2096 | substream = pcm_oss_file->streams[stream]; |
| 2097 | if (substream == NULL) |
| 2098 | return -EINVAL; |
| 2099 | if ((err = snd_pcm_oss_make_ready(substream)) < 0) |
| 2100 | return err; |
| 2101 | runtime = substream->runtime; |
| 2102 | if (runtime->oss.params || runtime->oss.prepare) { |
| 2103 | memset(&info, 0, sizeof(info)); |
| 2104 | if (copy_to_user(_info, &info, sizeof(info))) |
| 2105 | return -EFAULT; |
| 2106 | return 0; |
| 2107 | } |
| 2108 | if (stream == SNDRV_PCM_STREAM_PLAYBACK) { |
| 2109 | err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DELAY, &delay); |
| 2110 | if (err == -EPIPE || err == -ESTRPIPE || (! err && delay < 0)) { |
| 2111 | err = 0; |
| 2112 | delay = 0; |
| 2113 | fixup = 0; |
| 2114 | } else { |
| 2115 | fixup = runtime->oss.buffer_used; |
| 2116 | } |
| 2117 | } else { |
| 2118 | err = snd_pcm_oss_capture_position_fixup(substream, &delay); |
| 2119 | fixup = -runtime->oss.buffer_used; |
| 2120 | } |
| 2121 | if (err < 0) |
| 2122 | return err; |
| 2123 | 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] | 2124 | if (atomic_read(&substream->mmap_count)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2125 | snd_pcm_sframes_t n; |
Jaroslav Kysela | f240406 | 2010-01-05 17:19:34 +0100 | [diff] [blame] | 2126 | delay = get_hw_ptr_period(runtime); |
| 2127 | n = delay - runtime->oss.prev_hw_ptr_period; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2128 | if (n < 0) |
| 2129 | n += runtime->boundary; |
| 2130 | info.blocks = n / runtime->period_size; |
Jaroslav Kysela | f240406 | 2010-01-05 17:19:34 +0100 | [diff] [blame] | 2131 | runtime->oss.prev_hw_ptr_period = delay; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2132 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) |
| 2133 | snd_pcm_oss_simulate_fill(substream, delay); |
| 2134 | info.bytes = snd_pcm_oss_bytes(substream, runtime->status->hw_ptr) & INT_MAX; |
| 2135 | } else { |
Jaroslav Kysela | 5ac0fab | 2005-05-31 16:59:39 +0200 | [diff] [blame] | 2136 | delay = snd_pcm_oss_bytes(substream, delay); |
Jaroslav Kysela | fb4bd0a | 2005-05-31 15:44:23 +0200 | [diff] [blame] | 2137 | if (stream == SNDRV_PCM_STREAM_PLAYBACK) { |
Takashi Iwai | 060d77b | 2006-03-27 16:44:52 +0200 | [diff] [blame] | 2138 | if (substream->oss.setup.buggyptr) |
Takashi Iwai | 10f69f9 | 2005-09-08 13:48:34 +0200 | [diff] [blame] | 2139 | info.blocks = (runtime->oss.buffer_bytes - delay - fixup) / runtime->oss.period_bytes; |
| 2140 | else |
| 2141 | info.blocks = (delay + fixup) / runtime->oss.period_bytes; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2142 | info.bytes = (runtime->oss.bytes - delay) & INT_MAX; |
Jaroslav Kysela | fb4bd0a | 2005-05-31 15:44:23 +0200 | [diff] [blame] | 2143 | } else { |
Jaroslav Kysela | 5ac0fab | 2005-05-31 16:59:39 +0200 | [diff] [blame] | 2144 | delay += fixup; |
| 2145 | info.blocks = delay / runtime->oss.period_bytes; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2146 | info.bytes = (runtime->oss.bytes + delay) & INT_MAX; |
Jaroslav Kysela | fb4bd0a | 2005-05-31 15:44:23 +0200 | [diff] [blame] | 2147 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2148 | } |
| 2149 | if (copy_to_user(_info, &info, sizeof(info))) |
| 2150 | return -EFAULT; |
| 2151 | return 0; |
| 2152 | } |
| 2153 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2154 | 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] | 2155 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2156 | struct snd_pcm_substream *substream; |
| 2157 | struct snd_pcm_runtime *runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2158 | snd_pcm_sframes_t avail; |
| 2159 | int fixup; |
| 2160 | struct audio_buf_info info; |
| 2161 | int err; |
| 2162 | |
| 2163 | if (_info == NULL) |
| 2164 | return -EFAULT; |
| 2165 | substream = pcm_oss_file->streams[stream]; |
| 2166 | if (substream == NULL) |
| 2167 | return -EINVAL; |
| 2168 | runtime = substream->runtime; |
| 2169 | |
| 2170 | if (runtime->oss.params && |
| 2171 | (err = snd_pcm_oss_change_params(substream)) < 0) |
| 2172 | return err; |
| 2173 | |
| 2174 | info.fragsize = runtime->oss.period_bytes; |
| 2175 | info.fragstotal = runtime->periods; |
| 2176 | if (runtime->oss.prepare) { |
| 2177 | if (stream == SNDRV_PCM_STREAM_PLAYBACK) { |
| 2178 | info.bytes = runtime->oss.period_bytes * runtime->oss.periods; |
| 2179 | info.fragments = runtime->oss.periods; |
| 2180 | } else { |
| 2181 | info.bytes = 0; |
| 2182 | info.fragments = 0; |
| 2183 | } |
| 2184 | } else { |
| 2185 | if (stream == SNDRV_PCM_STREAM_PLAYBACK) { |
| 2186 | err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DELAY, &avail); |
| 2187 | if (err == -EPIPE || err == -ESTRPIPE || (! err && avail < 0)) { |
| 2188 | avail = runtime->buffer_size; |
| 2189 | err = 0; |
| 2190 | fixup = 0; |
| 2191 | } else { |
| 2192 | avail = runtime->buffer_size - avail; |
| 2193 | fixup = -runtime->oss.buffer_used; |
| 2194 | } |
| 2195 | } else { |
| 2196 | err = snd_pcm_oss_capture_position_fixup(substream, &avail); |
| 2197 | fixup = runtime->oss.buffer_used; |
| 2198 | } |
| 2199 | if (err < 0) |
| 2200 | return err; |
| 2201 | info.bytes = snd_pcm_oss_bytes(substream, avail) + fixup; |
| 2202 | info.fragments = info.bytes / runtime->oss.period_bytes; |
| 2203 | } |
| 2204 | |
| 2205 | #ifdef OSS_DEBUG |
Takashi Iwai | 006de267 | 2009-02-05 15:51:04 +0100 | [diff] [blame] | 2206 | printk(KERN_DEBUG "pcm_oss: space: bytes = %i, fragments = %i, " |
| 2207 | "fragstotal = %i, fragsize = %i\n", |
| 2208 | info.bytes, info.fragments, info.fragstotal, info.fragsize); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2209 | #endif |
| 2210 | if (copy_to_user(_info, &info, sizeof(info))) |
| 2211 | return -EFAULT; |
| 2212 | return 0; |
| 2213 | } |
| 2214 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2215 | 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] | 2216 | { |
| 2217 | // it won't be probably implemented |
| 2218 | // snd_printd("TODO: snd_pcm_oss_get_mapbuf\n"); |
| 2219 | return -EINVAL; |
| 2220 | } |
| 2221 | |
Takashi Iwai | 060d77b | 2006-03-27 16:44:52 +0200 | [diff] [blame] | 2222 | static const char *strip_task_path(const char *path) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2223 | { |
Takashi Iwai | 060d77b | 2006-03-27 16:44:52 +0200 | [diff] [blame] | 2224 | const char *ptr, *ptrl = NULL; |
| 2225 | for (ptr = path; *ptr; ptr++) { |
| 2226 | if (*ptr == '/') |
| 2227 | ptrl = ptr + 1; |
| 2228 | } |
| 2229 | return ptrl; |
| 2230 | } |
| 2231 | |
| 2232 | static void snd_pcm_oss_look_for_setup(struct snd_pcm *pcm, int stream, |
| 2233 | const char *task_name, |
| 2234 | struct snd_pcm_oss_setup *rsetup) |
| 2235 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2236 | struct snd_pcm_oss_setup *setup; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2237 | |
Ingo Molnar | 1a60d4c | 2006-01-16 16:29:08 +0100 | [diff] [blame] | 2238 | mutex_lock(&pcm->streams[stream].oss.setup_mutex); |
Takashi Iwai | 060d77b | 2006-03-27 16:44:52 +0200 | [diff] [blame] | 2239 | do { |
| 2240 | for (setup = pcm->streams[stream].oss.setup_list; setup; |
| 2241 | setup = setup->next) { |
| 2242 | if (!strcmp(setup->task_name, task_name)) |
| 2243 | goto out; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2244 | } |
Takashi Iwai | 060d77b | 2006-03-27 16:44:52 +0200 | [diff] [blame] | 2245 | } while ((task_name = strip_task_path(task_name)) != NULL); |
| 2246 | out: |
| 2247 | if (setup) |
| 2248 | *rsetup = *setup; |
Ingo Molnar | 1a60d4c | 2006-01-16 16:29:08 +0100 | [diff] [blame] | 2249 | mutex_unlock(&pcm->streams[stream].oss.setup_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2250 | } |
| 2251 | |
Takashi Iwai | 3bf75f9b | 2006-03-27 16:40:49 +0200 | [diff] [blame] | 2252 | static void snd_pcm_oss_release_substream(struct snd_pcm_substream *substream) |
| 2253 | { |
| 2254 | struct snd_pcm_runtime *runtime; |
| 2255 | runtime = substream->runtime; |
| 2256 | vfree(runtime->oss.buffer); |
| 2257 | runtime->oss.buffer = NULL; |
| 2258 | #ifdef CONFIG_SND_PCM_OSS_PLUGINS |
| 2259 | snd_pcm_oss_plugin_clear(substream); |
| 2260 | #endif |
| 2261 | substream->oss.oss = 0; |
| 2262 | } |
| 2263 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2264 | static void snd_pcm_oss_init_substream(struct snd_pcm_substream *substream, |
| 2265 | struct snd_pcm_oss_setup *setup, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2266 | int minor) |
| 2267 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2268 | struct snd_pcm_runtime *runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2269 | |
| 2270 | substream->oss.oss = 1; |
Takashi Iwai | 060d77b | 2006-03-27 16:44:52 +0200 | [diff] [blame] | 2271 | substream->oss.setup = *setup; |
Takashi Iwai | 3bf75f9b | 2006-03-27 16:40:49 +0200 | [diff] [blame] | 2272 | if (setup->nonblock) |
Takashi Iwai | 0df63e4 | 2006-04-28 15:13:41 +0200 | [diff] [blame] | 2273 | substream->f_flags |= O_NONBLOCK; |
Takashi Iwai | 1576274 | 2006-04-06 19:47:42 +0200 | [diff] [blame] | 2274 | else if (setup->block) |
Takashi Iwai | 0df63e4 | 2006-04-28 15:13:41 +0200 | [diff] [blame] | 2275 | substream->f_flags &= ~O_NONBLOCK; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2276 | runtime = substream->runtime; |
| 2277 | runtime->oss.params = 1; |
| 2278 | runtime->oss.trigger = 1; |
| 2279 | runtime->oss.rate = 8000; |
Takashi Iwai | e3a5d59 | 2006-11-14 13:03:19 +0100 | [diff] [blame] | 2280 | mutex_init(&runtime->oss.params_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2281 | switch (SNDRV_MINOR_OSS_DEVICE(minor)) { |
| 2282 | case SNDRV_MINOR_OSS_PCM_8: |
| 2283 | runtime->oss.format = AFMT_U8; |
| 2284 | break; |
| 2285 | case SNDRV_MINOR_OSS_PCM_16: |
| 2286 | runtime->oss.format = AFMT_S16_LE; |
| 2287 | break; |
| 2288 | default: |
| 2289 | runtime->oss.format = AFMT_MU_LAW; |
| 2290 | } |
| 2291 | runtime->oss.channels = 1; |
| 2292 | runtime->oss.fragshift = 0; |
| 2293 | runtime->oss.maxfrags = 0; |
| 2294 | runtime->oss.subdivision = 0; |
Takashi Iwai | 3bf75f9b | 2006-03-27 16:40:49 +0200 | [diff] [blame] | 2295 | substream->pcm_release = snd_pcm_oss_release_substream; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2296 | } |
| 2297 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2298 | 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] | 2299 | { |
| 2300 | int cidx; |
Takashi Iwai | 7eaa943 | 2008-08-08 17:09:09 +0200 | [diff] [blame] | 2301 | if (!pcm_oss_file) |
| 2302 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2303 | for (cidx = 0; cidx < 2; ++cidx) { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2304 | struct snd_pcm_substream *substream = pcm_oss_file->streams[cidx]; |
Takashi Iwai | 3bf75f9b | 2006-03-27 16:40:49 +0200 | [diff] [blame] | 2305 | if (substream) |
| 2306 | snd_pcm_release_substream(substream); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2307 | } |
| 2308 | kfree(pcm_oss_file); |
| 2309 | return 0; |
| 2310 | } |
| 2311 | |
| 2312 | static int snd_pcm_oss_open_file(struct file *file, |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2313 | struct snd_pcm *pcm, |
| 2314 | struct snd_pcm_oss_file **rpcm_oss_file, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2315 | int minor, |
Takashi Iwai | 060d77b | 2006-03-27 16:44:52 +0200 | [diff] [blame] | 2316 | struct snd_pcm_oss_setup *setup) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2317 | { |
Takashi Iwai | 3bf75f9b | 2006-03-27 16:40:49 +0200 | [diff] [blame] | 2318 | int idx, err; |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2319 | struct snd_pcm_oss_file *pcm_oss_file; |
Takashi Iwai | 3bf75f9b | 2006-03-27 16:40:49 +0200 | [diff] [blame] | 2320 | struct snd_pcm_substream *substream; |
Al Viro | aeb5d72 | 2008-09-02 15:28:45 -0400 | [diff] [blame] | 2321 | fmode_t f_mode = file->f_mode; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2322 | |
Takashi Iwai | 7eaa943 | 2008-08-08 17:09:09 +0200 | [diff] [blame] | 2323 | if (rpcm_oss_file) |
| 2324 | *rpcm_oss_file = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2325 | |
Takashi Iwai | ca2c096 | 2005-09-09 14:20:23 +0200 | [diff] [blame] | 2326 | pcm_oss_file = kzalloc(sizeof(*pcm_oss_file), GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2327 | if (pcm_oss_file == NULL) |
| 2328 | return -ENOMEM; |
| 2329 | |
| 2330 | if ((f_mode & (FMODE_WRITE|FMODE_READ)) == (FMODE_WRITE|FMODE_READ) && |
| 2331 | (pcm->info_flags & SNDRV_PCM_INFO_HALF_DUPLEX)) |
| 2332 | f_mode = FMODE_WRITE; |
Takashi Iwai | 3bf75f9b | 2006-03-27 16:40:49 +0200 | [diff] [blame] | 2333 | |
Takashi Iwai | 0df63e4 | 2006-04-28 15:13:41 +0200 | [diff] [blame] | 2334 | file->f_flags &= ~O_APPEND; |
Takashi Iwai | 3bf75f9b | 2006-03-27 16:40:49 +0200 | [diff] [blame] | 2335 | for (idx = 0; idx < 2; idx++) { |
Takashi Iwai | 060d77b | 2006-03-27 16:44:52 +0200 | [diff] [blame] | 2336 | if (setup[idx].disable) |
Takashi Iwai | 3bf75f9b | 2006-03-27 16:40:49 +0200 | [diff] [blame] | 2337 | continue; |
Takashi Iwai | 6cb53e7 | 2006-08-02 21:12:09 +0200 | [diff] [blame] | 2338 | if (! pcm->streams[idx].substream_count) |
| 2339 | continue; /* no matching substream */ |
Takashi Iwai | 3bf75f9b | 2006-03-27 16:40:49 +0200 | [diff] [blame] | 2340 | if (idx == SNDRV_PCM_STREAM_PLAYBACK) { |
| 2341 | if (! (f_mode & FMODE_WRITE)) |
| 2342 | continue; |
| 2343 | } else { |
| 2344 | if (! (f_mode & FMODE_READ)) |
| 2345 | continue; |
| 2346 | } |
| 2347 | err = snd_pcm_open_substream(pcm, idx, file, &substream); |
| 2348 | if (err < 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2349 | snd_pcm_oss_release_file(pcm_oss_file); |
| 2350 | return err; |
| 2351 | } |
Takashi Iwai | 3bf75f9b | 2006-03-27 16:40:49 +0200 | [diff] [blame] | 2352 | |
| 2353 | pcm_oss_file->streams[idx] = substream; |
Takashi Iwai | 1576274 | 2006-04-06 19:47:42 +0200 | [diff] [blame] | 2354 | substream->file = pcm_oss_file; |
Takashi Iwai | 060d77b | 2006-03-27 16:44:52 +0200 | [diff] [blame] | 2355 | snd_pcm_oss_init_substream(substream, &setup[idx], minor); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2356 | } |
| 2357 | |
OGAWA Hirofumi | bbdc1b7 | 2006-04-06 19:42:40 +0200 | [diff] [blame] | 2358 | if (!pcm_oss_file->streams[0] && !pcm_oss_file->streams[1]) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2359 | snd_pcm_oss_release_file(pcm_oss_file); |
| 2360 | return -EINVAL; |
| 2361 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2362 | |
| 2363 | file->private_data = pcm_oss_file; |
Takashi Iwai | 7eaa943 | 2008-08-08 17:09:09 +0200 | [diff] [blame] | 2364 | if (rpcm_oss_file) |
| 2365 | *rpcm_oss_file = pcm_oss_file; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2366 | return 0; |
| 2367 | } |
| 2368 | |
| 2369 | |
Takashi Iwai | 93f2e37 | 2005-10-10 11:51:55 +0200 | [diff] [blame] | 2370 | static int snd_task_name(struct task_struct *task, char *name, size_t size) |
| 2371 | { |
| 2372 | unsigned int idx; |
| 2373 | |
Takashi Iwai | 7eaa943 | 2008-08-08 17:09:09 +0200 | [diff] [blame] | 2374 | if (snd_BUG_ON(!task || !name || size < 2)) |
| 2375 | return -EINVAL; |
Takashi Iwai | 93f2e37 | 2005-10-10 11:51:55 +0200 | [diff] [blame] | 2376 | for (idx = 0; idx < sizeof(task->comm) && idx + 1 < size; idx++) |
| 2377 | name[idx] = task->comm[idx]; |
| 2378 | name[idx] = '\0'; |
| 2379 | return 0; |
| 2380 | } |
| 2381 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2382 | static int snd_pcm_oss_open(struct inode *inode, struct file *file) |
| 2383 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2384 | int err; |
| 2385 | char task_name[32]; |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2386 | struct snd_pcm *pcm; |
| 2387 | struct snd_pcm_oss_file *pcm_oss_file; |
Takashi Iwai | 060d77b | 2006-03-27 16:44:52 +0200 | [diff] [blame] | 2388 | struct snd_pcm_oss_setup setup[2]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2389 | int nonblock; |
| 2390 | wait_queue_t wait; |
| 2391 | |
Takashi Iwai | 02f4865 | 2010-04-13 11:49:04 +0200 | [diff] [blame] | 2392 | err = nonseekable_open(inode, file); |
| 2393 | if (err < 0) |
| 2394 | return err; |
| 2395 | |
Clemens Ladisch | f87135f | 2005-11-20 14:06:59 +0100 | [diff] [blame] | 2396 | pcm = snd_lookup_oss_minor_data(iminor(inode), |
| 2397 | SNDRV_OSS_DEVICE_TYPE_PCM); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2398 | if (pcm == NULL) { |
| 2399 | err = -ENODEV; |
| 2400 | goto __error1; |
| 2401 | } |
| 2402 | err = snd_card_file_add(pcm->card, file); |
| 2403 | if (err < 0) |
| 2404 | goto __error1; |
| 2405 | if (!try_module_get(pcm->card->module)) { |
| 2406 | err = -EFAULT; |
| 2407 | goto __error2; |
| 2408 | } |
| 2409 | if (snd_task_name(current, task_name, sizeof(task_name)) < 0) { |
| 2410 | err = -EFAULT; |
| 2411 | goto __error; |
| 2412 | } |
Takashi Iwai | 1576274 | 2006-04-06 19:47:42 +0200 | [diff] [blame] | 2413 | memset(setup, 0, sizeof(setup)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2414 | if (file->f_mode & FMODE_WRITE) |
Takashi Iwai | 060d77b | 2006-03-27 16:44:52 +0200 | [diff] [blame] | 2415 | snd_pcm_oss_look_for_setup(pcm, SNDRV_PCM_STREAM_PLAYBACK, |
| 2416 | task_name, &setup[0]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2417 | if (file->f_mode & FMODE_READ) |
Takashi Iwai | 060d77b | 2006-03-27 16:44:52 +0200 | [diff] [blame] | 2418 | snd_pcm_oss_look_for_setup(pcm, SNDRV_PCM_STREAM_CAPTURE, |
| 2419 | task_name, &setup[1]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2420 | |
| 2421 | nonblock = !!(file->f_flags & O_NONBLOCK); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2422 | if (!nonblock) |
| 2423 | nonblock = nonblock_open; |
| 2424 | |
| 2425 | init_waitqueue_entry(&wait, current); |
| 2426 | add_wait_queue(&pcm->open_wait, &wait); |
Ingo Molnar | 1a60d4c | 2006-01-16 16:29:08 +0100 | [diff] [blame] | 2427 | mutex_lock(&pcm->open_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2428 | while (1) { |
| 2429 | err = snd_pcm_oss_open_file(file, pcm, &pcm_oss_file, |
Takashi Iwai | 3bf75f9b | 2006-03-27 16:40:49 +0200 | [diff] [blame] | 2430 | iminor(inode), setup); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2431 | if (err >= 0) |
| 2432 | break; |
| 2433 | if (err == -EAGAIN) { |
| 2434 | if (nonblock) { |
| 2435 | err = -EBUSY; |
| 2436 | break; |
| 2437 | } |
| 2438 | } else |
| 2439 | break; |
| 2440 | set_current_state(TASK_INTERRUPTIBLE); |
Ingo Molnar | 1a60d4c | 2006-01-16 16:29:08 +0100 | [diff] [blame] | 2441 | mutex_unlock(&pcm->open_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2442 | schedule(); |
Ingo Molnar | 1a60d4c | 2006-01-16 16:29:08 +0100 | [diff] [blame] | 2443 | mutex_lock(&pcm->open_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2444 | if (signal_pending(current)) { |
| 2445 | err = -ERESTARTSYS; |
| 2446 | break; |
| 2447 | } |
| 2448 | } |
| 2449 | remove_wait_queue(&pcm->open_wait, &wait); |
Ingo Molnar | 1a60d4c | 2006-01-16 16:29:08 +0100 | [diff] [blame] | 2450 | mutex_unlock(&pcm->open_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2451 | if (err < 0) |
| 2452 | goto __error; |
| 2453 | return err; |
| 2454 | |
| 2455 | __error: |
| 2456 | module_put(pcm->card->module); |
| 2457 | __error2: |
| 2458 | snd_card_file_remove(pcm->card, file); |
| 2459 | __error1: |
| 2460 | return err; |
| 2461 | } |
| 2462 | |
| 2463 | static int snd_pcm_oss_release(struct inode *inode, struct file *file) |
| 2464 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2465 | struct snd_pcm *pcm; |
| 2466 | struct snd_pcm_substream *substream; |
| 2467 | struct snd_pcm_oss_file *pcm_oss_file; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2468 | |
| 2469 | pcm_oss_file = file->private_data; |
| 2470 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK]; |
| 2471 | if (substream == NULL) |
| 2472 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE]; |
Takashi Iwai | 7eaa943 | 2008-08-08 17:09:09 +0200 | [diff] [blame] | 2473 | if (snd_BUG_ON(!substream)) |
| 2474 | return -ENXIO; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2475 | pcm = substream->pcm; |
Takashi Iwai | de1b8b9 | 2006-11-08 15:41:29 +0100 | [diff] [blame] | 2476 | if (!pcm->card->shutdown) |
| 2477 | snd_pcm_oss_sync(pcm_oss_file); |
Ingo Molnar | 1a60d4c | 2006-01-16 16:29:08 +0100 | [diff] [blame] | 2478 | mutex_lock(&pcm->open_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2479 | snd_pcm_oss_release_file(pcm_oss_file); |
Ingo Molnar | 1a60d4c | 2006-01-16 16:29:08 +0100 | [diff] [blame] | 2480 | mutex_unlock(&pcm->open_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2481 | wake_up(&pcm->open_wait); |
| 2482 | module_put(pcm->card->module); |
| 2483 | snd_card_file_remove(pcm->card, file); |
| 2484 | return 0; |
| 2485 | } |
| 2486 | |
| 2487 | static long snd_pcm_oss_ioctl(struct file *file, unsigned int cmd, unsigned long arg) |
| 2488 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2489 | struct snd_pcm_oss_file *pcm_oss_file; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2490 | int __user *p = (int __user *)arg; |
| 2491 | int res; |
| 2492 | |
| 2493 | pcm_oss_file = file->private_data; |
| 2494 | if (cmd == OSS_GETVERSION) |
| 2495 | return put_user(SNDRV_OSS_VERSION, p); |
| 2496 | if (cmd == OSS_ALSAEMULVER) |
| 2497 | return put_user(1, p); |
| 2498 | #if defined(CONFIG_SND_MIXER_OSS) || (defined(MODULE) && defined(CONFIG_SND_MIXER_OSS_MODULE)) |
| 2499 | if (((cmd >> 8) & 0xff) == 'M') { /* mixer ioctl - for OSS compatibility */ |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2500 | struct snd_pcm_substream *substream; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2501 | int idx; |
| 2502 | for (idx = 0; idx < 2; ++idx) { |
| 2503 | substream = pcm_oss_file->streams[idx]; |
| 2504 | if (substream != NULL) |
| 2505 | break; |
| 2506 | } |
Takashi Iwai | 7eaa943 | 2008-08-08 17:09:09 +0200 | [diff] [blame] | 2507 | if (snd_BUG_ON(idx >= 2)) |
| 2508 | return -ENXIO; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2509 | return snd_mixer_oss_ioctl_card(substream->pcm->card, cmd, arg); |
| 2510 | } |
| 2511 | #endif |
| 2512 | if (((cmd >> 8) & 0xff) != 'P') |
| 2513 | return -EINVAL; |
| 2514 | #ifdef OSS_DEBUG |
Takashi Iwai | 006de267 | 2009-02-05 15:51:04 +0100 | [diff] [blame] | 2515 | printk(KERN_DEBUG "pcm_oss: ioctl = 0x%x\n", cmd); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2516 | #endif |
| 2517 | switch (cmd) { |
| 2518 | case SNDCTL_DSP_RESET: |
| 2519 | return snd_pcm_oss_reset(pcm_oss_file); |
| 2520 | case SNDCTL_DSP_SYNC: |
| 2521 | return snd_pcm_oss_sync(pcm_oss_file); |
| 2522 | case SNDCTL_DSP_SPEED: |
| 2523 | if (get_user(res, p)) |
| 2524 | return -EFAULT; |
| 2525 | if ((res = snd_pcm_oss_set_rate(pcm_oss_file, res))<0) |
| 2526 | return res; |
| 2527 | return put_user(res, p); |
| 2528 | case SOUND_PCM_READ_RATE: |
| 2529 | res = snd_pcm_oss_get_rate(pcm_oss_file); |
| 2530 | if (res < 0) |
| 2531 | return res; |
| 2532 | return put_user(res, p); |
| 2533 | case SNDCTL_DSP_STEREO: |
| 2534 | if (get_user(res, p)) |
| 2535 | return -EFAULT; |
| 2536 | res = res > 0 ? 2 : 1; |
| 2537 | if ((res = snd_pcm_oss_set_channels(pcm_oss_file, res)) < 0) |
| 2538 | return res; |
| 2539 | return put_user(--res, p); |
| 2540 | case SNDCTL_DSP_GETBLKSIZE: |
| 2541 | res = snd_pcm_oss_get_block_size(pcm_oss_file); |
| 2542 | if (res < 0) |
| 2543 | return res; |
| 2544 | return put_user(res, p); |
| 2545 | case SNDCTL_DSP_SETFMT: |
| 2546 | if (get_user(res, p)) |
| 2547 | return -EFAULT; |
| 2548 | res = snd_pcm_oss_set_format(pcm_oss_file, res); |
| 2549 | if (res < 0) |
| 2550 | return res; |
| 2551 | return put_user(res, p); |
| 2552 | case SOUND_PCM_READ_BITS: |
| 2553 | res = snd_pcm_oss_get_format(pcm_oss_file); |
| 2554 | if (res < 0) |
| 2555 | return res; |
| 2556 | return put_user(res, p); |
| 2557 | case SNDCTL_DSP_CHANNELS: |
| 2558 | if (get_user(res, p)) |
| 2559 | return -EFAULT; |
| 2560 | res = snd_pcm_oss_set_channels(pcm_oss_file, res); |
| 2561 | if (res < 0) |
| 2562 | return res; |
| 2563 | return put_user(res, p); |
| 2564 | case SOUND_PCM_READ_CHANNELS: |
| 2565 | res = snd_pcm_oss_get_channels(pcm_oss_file); |
| 2566 | if (res < 0) |
| 2567 | return res; |
| 2568 | return put_user(res, p); |
| 2569 | case SOUND_PCM_WRITE_FILTER: |
| 2570 | case SOUND_PCM_READ_FILTER: |
| 2571 | return -EIO; |
| 2572 | case SNDCTL_DSP_POST: |
| 2573 | return snd_pcm_oss_post(pcm_oss_file); |
| 2574 | case SNDCTL_DSP_SUBDIVIDE: |
| 2575 | if (get_user(res, p)) |
| 2576 | return -EFAULT; |
| 2577 | res = snd_pcm_oss_set_subdivide(pcm_oss_file, res); |
| 2578 | if (res < 0) |
| 2579 | return res; |
| 2580 | return put_user(res, p); |
| 2581 | case SNDCTL_DSP_SETFRAGMENT: |
| 2582 | if (get_user(res, p)) |
| 2583 | return -EFAULT; |
| 2584 | return snd_pcm_oss_set_fragment(pcm_oss_file, res); |
| 2585 | case SNDCTL_DSP_GETFMTS: |
| 2586 | res = snd_pcm_oss_get_formats(pcm_oss_file); |
| 2587 | if (res < 0) |
| 2588 | return res; |
| 2589 | return put_user(res, p); |
| 2590 | case SNDCTL_DSP_GETOSPACE: |
| 2591 | case SNDCTL_DSP_GETISPACE: |
| 2592 | return snd_pcm_oss_get_space(pcm_oss_file, |
| 2593 | cmd == SNDCTL_DSP_GETISPACE ? |
| 2594 | SNDRV_PCM_STREAM_CAPTURE : SNDRV_PCM_STREAM_PLAYBACK, |
| 2595 | (struct audio_buf_info __user *) arg); |
| 2596 | case SNDCTL_DSP_NONBLOCK: |
| 2597 | return snd_pcm_oss_nonblock(file); |
| 2598 | case SNDCTL_DSP_GETCAPS: |
| 2599 | res = snd_pcm_oss_get_caps(pcm_oss_file); |
| 2600 | if (res < 0) |
| 2601 | return res; |
| 2602 | return put_user(res, p); |
| 2603 | case SNDCTL_DSP_GETTRIGGER: |
| 2604 | res = snd_pcm_oss_get_trigger(pcm_oss_file); |
| 2605 | if (res < 0) |
| 2606 | return res; |
| 2607 | return put_user(res, p); |
| 2608 | case SNDCTL_DSP_SETTRIGGER: |
| 2609 | if (get_user(res, p)) |
| 2610 | return -EFAULT; |
| 2611 | return snd_pcm_oss_set_trigger(pcm_oss_file, res); |
| 2612 | case SNDCTL_DSP_GETIPTR: |
| 2613 | case SNDCTL_DSP_GETOPTR: |
| 2614 | return snd_pcm_oss_get_ptr(pcm_oss_file, |
| 2615 | cmd == SNDCTL_DSP_GETIPTR ? |
| 2616 | SNDRV_PCM_STREAM_CAPTURE : SNDRV_PCM_STREAM_PLAYBACK, |
| 2617 | (struct count_info __user *) arg); |
| 2618 | case SNDCTL_DSP_MAPINBUF: |
| 2619 | case SNDCTL_DSP_MAPOUTBUF: |
| 2620 | return snd_pcm_oss_get_mapbuf(pcm_oss_file, |
| 2621 | cmd == SNDCTL_DSP_MAPINBUF ? |
| 2622 | SNDRV_PCM_STREAM_CAPTURE : SNDRV_PCM_STREAM_PLAYBACK, |
| 2623 | (struct buffmem_desc __user *) arg); |
| 2624 | case SNDCTL_DSP_SETSYNCRO: |
| 2625 | /* stop DMA now.. */ |
| 2626 | return 0; |
| 2627 | case SNDCTL_DSP_SETDUPLEX: |
| 2628 | if (snd_pcm_oss_get_caps(pcm_oss_file) & DSP_CAP_DUPLEX) |
| 2629 | return 0; |
| 2630 | return -EIO; |
| 2631 | case SNDCTL_DSP_GETODELAY: |
| 2632 | res = snd_pcm_oss_get_odelay(pcm_oss_file); |
| 2633 | if (res < 0) { |
| 2634 | /* it's for sure, some broken apps don't check for error codes */ |
| 2635 | put_user(0, p); |
| 2636 | return res; |
| 2637 | } |
| 2638 | return put_user(res, p); |
| 2639 | case SNDCTL_DSP_PROFILE: |
| 2640 | return 0; /* silently ignore */ |
| 2641 | default: |
| 2642 | snd_printd("pcm_oss: unknown command = 0x%x\n", cmd); |
| 2643 | } |
| 2644 | return -EINVAL; |
| 2645 | } |
| 2646 | |
| 2647 | #ifdef CONFIG_COMPAT |
| 2648 | /* all compatible */ |
| 2649 | #define snd_pcm_oss_ioctl_compat snd_pcm_oss_ioctl |
| 2650 | #else |
| 2651 | #define snd_pcm_oss_ioctl_compat NULL |
| 2652 | #endif |
| 2653 | |
| 2654 | static ssize_t snd_pcm_oss_read(struct file *file, char __user *buf, size_t count, loff_t *offset) |
| 2655 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2656 | struct snd_pcm_oss_file *pcm_oss_file; |
| 2657 | struct snd_pcm_substream *substream; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2658 | |
| 2659 | pcm_oss_file = file->private_data; |
| 2660 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE]; |
| 2661 | if (substream == NULL) |
| 2662 | return -ENXIO; |
Takashi Iwai | 0df63e4 | 2006-04-28 15:13:41 +0200 | [diff] [blame] | 2663 | substream->f_flags = file->f_flags & O_NONBLOCK; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2664 | #ifndef OSS_DEBUG |
| 2665 | return snd_pcm_oss_read1(substream, buf, count); |
| 2666 | #else |
| 2667 | { |
| 2668 | ssize_t res = snd_pcm_oss_read1(substream, buf, count); |
Takashi Iwai | 006de267 | 2009-02-05 15:51:04 +0100 | [diff] [blame] | 2669 | printk(KERN_DEBUG "pcm_oss: read %li bytes " |
| 2670 | "(returned %li bytes)\n", (long)count, (long)res); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2671 | return res; |
| 2672 | } |
| 2673 | #endif |
| 2674 | } |
| 2675 | |
| 2676 | static ssize_t snd_pcm_oss_write(struct file *file, const char __user *buf, size_t count, loff_t *offset) |
| 2677 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2678 | struct snd_pcm_oss_file *pcm_oss_file; |
| 2679 | struct snd_pcm_substream *substream; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2680 | long result; |
| 2681 | |
| 2682 | pcm_oss_file = file->private_data; |
| 2683 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK]; |
| 2684 | if (substream == NULL) |
| 2685 | return -ENXIO; |
Takashi Iwai | 0df63e4 | 2006-04-28 15:13:41 +0200 | [diff] [blame] | 2686 | substream->f_flags = file->f_flags & O_NONBLOCK; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2687 | result = snd_pcm_oss_write1(substream, buf, count); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2688 | #ifdef OSS_DEBUG |
Takashi Iwai | 006de267 | 2009-02-05 15:51:04 +0100 | [diff] [blame] | 2689 | printk(KERN_DEBUG "pcm_oss: write %li bytes (wrote %li bytes)\n", |
| 2690 | (long)count, (long)result); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2691 | #endif |
| 2692 | return result; |
| 2693 | } |
| 2694 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2695 | static int snd_pcm_oss_playback_ready(struct snd_pcm_substream *substream) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2696 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2697 | struct snd_pcm_runtime *runtime = substream->runtime; |
Takashi Iwai | 9c323fc | 2006-04-28 15:13:41 +0200 | [diff] [blame] | 2698 | if (atomic_read(&substream->mmap_count)) |
Jaroslav Kysela | f240406 | 2010-01-05 17:19:34 +0100 | [diff] [blame] | 2699 | return runtime->oss.prev_hw_ptr_period != |
| 2700 | get_hw_ptr_period(runtime); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2701 | else |
Jaroslav Kysela | f240406 | 2010-01-05 17:19:34 +0100 | [diff] [blame] | 2702 | return snd_pcm_playback_avail(runtime) >= |
| 2703 | runtime->oss.period_frames; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2704 | } |
| 2705 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2706 | static int snd_pcm_oss_capture_ready(struct snd_pcm_substream *substream) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2707 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2708 | struct snd_pcm_runtime *runtime = substream->runtime; |
Takashi Iwai | 9c323fc | 2006-04-28 15:13:41 +0200 | [diff] [blame] | 2709 | if (atomic_read(&substream->mmap_count)) |
Jaroslav Kysela | f240406 | 2010-01-05 17:19:34 +0100 | [diff] [blame] | 2710 | return runtime->oss.prev_hw_ptr_period != |
| 2711 | get_hw_ptr_period(runtime); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2712 | else |
Jaroslav Kysela | f240406 | 2010-01-05 17:19:34 +0100 | [diff] [blame] | 2713 | return snd_pcm_capture_avail(runtime) >= |
| 2714 | runtime->oss.period_frames; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2715 | } |
| 2716 | |
| 2717 | static unsigned int snd_pcm_oss_poll(struct file *file, poll_table * wait) |
| 2718 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2719 | struct snd_pcm_oss_file *pcm_oss_file; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2720 | unsigned int mask; |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2721 | struct snd_pcm_substream *psubstream = NULL, *csubstream = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2722 | |
| 2723 | pcm_oss_file = file->private_data; |
| 2724 | |
| 2725 | psubstream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK]; |
| 2726 | csubstream = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE]; |
| 2727 | |
| 2728 | mask = 0; |
| 2729 | if (psubstream != NULL) { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2730 | struct snd_pcm_runtime *runtime = psubstream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2731 | poll_wait(file, &runtime->sleep, wait); |
| 2732 | snd_pcm_stream_lock_irq(psubstream); |
| 2733 | if (runtime->status->state != SNDRV_PCM_STATE_DRAINING && |
| 2734 | (runtime->status->state != SNDRV_PCM_STATE_RUNNING || |
| 2735 | snd_pcm_oss_playback_ready(psubstream))) |
| 2736 | mask |= POLLOUT | POLLWRNORM; |
| 2737 | snd_pcm_stream_unlock_irq(psubstream); |
| 2738 | } |
| 2739 | if (csubstream != NULL) { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2740 | struct snd_pcm_runtime *runtime = csubstream->runtime; |
| 2741 | snd_pcm_state_t ostate; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2742 | poll_wait(file, &runtime->sleep, wait); |
| 2743 | snd_pcm_stream_lock_irq(csubstream); |
| 2744 | if ((ostate = runtime->status->state) != SNDRV_PCM_STATE_RUNNING || |
| 2745 | snd_pcm_oss_capture_ready(csubstream)) |
| 2746 | mask |= POLLIN | POLLRDNORM; |
| 2747 | snd_pcm_stream_unlock_irq(csubstream); |
| 2748 | if (ostate != SNDRV_PCM_STATE_RUNNING && runtime->oss.trigger) { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2749 | struct snd_pcm_oss_file ofile; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2750 | memset(&ofile, 0, sizeof(ofile)); |
| 2751 | ofile.streams[SNDRV_PCM_STREAM_CAPTURE] = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE]; |
| 2752 | runtime->oss.trigger = 0; |
| 2753 | snd_pcm_oss_set_trigger(&ofile, PCM_ENABLE_INPUT); |
| 2754 | } |
| 2755 | } |
| 2756 | |
| 2757 | return mask; |
| 2758 | } |
| 2759 | |
| 2760 | static int snd_pcm_oss_mmap(struct file *file, struct vm_area_struct *area) |
| 2761 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2762 | struct snd_pcm_oss_file *pcm_oss_file; |
| 2763 | struct snd_pcm_substream *substream = NULL; |
| 2764 | struct snd_pcm_runtime *runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2765 | int err; |
| 2766 | |
| 2767 | #ifdef OSS_DEBUG |
Takashi Iwai | 006de267 | 2009-02-05 15:51:04 +0100 | [diff] [blame] | 2768 | printk(KERN_DEBUG "pcm_oss: mmap begin\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2769 | #endif |
| 2770 | pcm_oss_file = file->private_data; |
| 2771 | switch ((area->vm_flags & (VM_READ | VM_WRITE))) { |
| 2772 | case VM_READ | VM_WRITE: |
| 2773 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK]; |
| 2774 | if (substream) |
| 2775 | break; |
| 2776 | /* Fall through */ |
| 2777 | case VM_READ: |
| 2778 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE]; |
| 2779 | break; |
| 2780 | case VM_WRITE: |
| 2781 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK]; |
| 2782 | break; |
| 2783 | default: |
| 2784 | return -EINVAL; |
| 2785 | } |
| 2786 | /* set VM_READ access as well to fix memset() routines that do |
| 2787 | reads before writes (to improve performance) */ |
| 2788 | area->vm_flags |= VM_READ; |
| 2789 | if (substream == NULL) |
| 2790 | return -ENXIO; |
| 2791 | runtime = substream->runtime; |
| 2792 | if (!(runtime->info & SNDRV_PCM_INFO_MMAP_VALID)) |
| 2793 | return -EIO; |
| 2794 | if (runtime->info & SNDRV_PCM_INFO_INTERLEAVED) |
| 2795 | runtime->access = SNDRV_PCM_ACCESS_MMAP_INTERLEAVED; |
| 2796 | else |
| 2797 | return -EIO; |
| 2798 | |
| 2799 | if (runtime->oss.params) { |
| 2800 | if ((err = snd_pcm_oss_change_params(substream)) < 0) |
| 2801 | return err; |
| 2802 | } |
Jaroslav Kysela | 21a3479 | 2006-01-13 09:12:11 +0100 | [diff] [blame] | 2803 | #ifdef CONFIG_SND_PCM_OSS_PLUGINS |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2804 | if (runtime->oss.plugin_first != NULL) |
| 2805 | return -EIO; |
Jaroslav Kysela | 21a3479 | 2006-01-13 09:12:11 +0100 | [diff] [blame] | 2806 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2807 | |
| 2808 | if (area->vm_pgoff != 0) |
| 2809 | return -EINVAL; |
| 2810 | |
| 2811 | err = snd_pcm_mmap_data(substream, file, area); |
| 2812 | if (err < 0) |
| 2813 | return err; |
| 2814 | runtime->oss.mmap_bytes = area->vm_end - area->vm_start; |
| 2815 | runtime->silence_threshold = 0; |
| 2816 | runtime->silence_size = 0; |
| 2817 | #ifdef OSS_DEBUG |
Takashi Iwai | 006de267 | 2009-02-05 15:51:04 +0100 | [diff] [blame] | 2818 | printk(KERN_DEBUG "pcm_oss: mmap ok, bytes = 0x%x\n", |
| 2819 | runtime->oss.mmap_bytes); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2820 | #endif |
| 2821 | /* In mmap mode we never stop */ |
| 2822 | runtime->stop_threshold = runtime->boundary; |
| 2823 | |
| 2824 | return 0; |
| 2825 | } |
| 2826 | |
Takashi Iwai | b7d90a3 | 2006-04-25 12:56:04 +0200 | [diff] [blame] | 2827 | #ifdef CONFIG_SND_VERBOSE_PROCFS |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2828 | /* |
| 2829 | * /proc interface |
| 2830 | */ |
| 2831 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2832 | static void snd_pcm_oss_proc_read(struct snd_info_entry *entry, |
| 2833 | struct snd_info_buffer *buffer) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2834 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2835 | struct snd_pcm_str *pstr = entry->private_data; |
| 2836 | struct snd_pcm_oss_setup *setup = pstr->oss.setup_list; |
Ingo Molnar | 1a60d4c | 2006-01-16 16:29:08 +0100 | [diff] [blame] | 2837 | mutex_lock(&pstr->oss.setup_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2838 | while (setup) { |
| 2839 | snd_iprintf(buffer, "%s %u %u%s%s%s%s%s%s\n", |
| 2840 | setup->task_name, |
| 2841 | setup->periods, |
| 2842 | setup->period_size, |
| 2843 | setup->disable ? " disable" : "", |
| 2844 | setup->direct ? " direct" : "", |
| 2845 | setup->block ? " block" : "", |
| 2846 | setup->nonblock ? " non-block" : "", |
| 2847 | setup->partialfrag ? " partial-frag" : "", |
| 2848 | setup->nosilence ? " no-silence" : ""); |
| 2849 | setup = setup->next; |
| 2850 | } |
Ingo Molnar | 1a60d4c | 2006-01-16 16:29:08 +0100 | [diff] [blame] | 2851 | mutex_unlock(&pstr->oss.setup_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2852 | } |
| 2853 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2854 | 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] | 2855 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2856 | struct snd_pcm_oss_setup *setup, *setupn; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2857 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2858 | for (setup = pstr->oss.setup_list, pstr->oss.setup_list = NULL; |
| 2859 | setup; setup = setupn) { |
| 2860 | setupn = setup->next; |
| 2861 | kfree(setup->task_name); |
| 2862 | kfree(setup); |
| 2863 | } |
| 2864 | pstr->oss.setup_list = NULL; |
| 2865 | } |
| 2866 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2867 | static void snd_pcm_oss_proc_write(struct snd_info_entry *entry, |
| 2868 | struct snd_info_buffer *buffer) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2869 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2870 | struct snd_pcm_str *pstr = entry->private_data; |
Takashi Iwai | 4f7454a | 2009-09-08 14:29:58 +0200 | [diff] [blame] | 2871 | char line[128], str[32], task_name[32]; |
| 2872 | const char *ptr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2873 | int idx1; |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2874 | struct snd_pcm_oss_setup *setup, *setup1, template; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2875 | |
| 2876 | while (!snd_info_get_line(buffer, line, sizeof(line))) { |
Ingo Molnar | 1a60d4c | 2006-01-16 16:29:08 +0100 | [diff] [blame] | 2877 | mutex_lock(&pstr->oss.setup_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2878 | memset(&template, 0, sizeof(template)); |
| 2879 | ptr = snd_info_get_str(task_name, line, sizeof(task_name)); |
| 2880 | if (!strcmp(task_name, "clear") || !strcmp(task_name, "erase")) { |
| 2881 | snd_pcm_oss_proc_free_setup_list(pstr); |
Ingo Molnar | 1a60d4c | 2006-01-16 16:29:08 +0100 | [diff] [blame] | 2882 | mutex_unlock(&pstr->oss.setup_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2883 | continue; |
| 2884 | } |
| 2885 | for (setup = pstr->oss.setup_list; setup; setup = setup->next) { |
| 2886 | if (!strcmp(setup->task_name, task_name)) { |
| 2887 | template = *setup; |
| 2888 | break; |
| 2889 | } |
| 2890 | } |
| 2891 | ptr = snd_info_get_str(str, ptr, sizeof(str)); |
| 2892 | template.periods = simple_strtoul(str, NULL, 10); |
| 2893 | ptr = snd_info_get_str(str, ptr, sizeof(str)); |
| 2894 | template.period_size = simple_strtoul(str, NULL, 10); |
| 2895 | for (idx1 = 31; idx1 >= 0; idx1--) |
| 2896 | if (template.period_size & (1 << idx1)) |
| 2897 | break; |
| 2898 | for (idx1--; idx1 >= 0; idx1--) |
| 2899 | template.period_size &= ~(1 << idx1); |
| 2900 | do { |
| 2901 | ptr = snd_info_get_str(str, ptr, sizeof(str)); |
| 2902 | if (!strcmp(str, "disable")) { |
| 2903 | template.disable = 1; |
| 2904 | } else if (!strcmp(str, "direct")) { |
| 2905 | template.direct = 1; |
| 2906 | } else if (!strcmp(str, "block")) { |
| 2907 | template.block = 1; |
| 2908 | } else if (!strcmp(str, "non-block")) { |
| 2909 | template.nonblock = 1; |
| 2910 | } else if (!strcmp(str, "partial-frag")) { |
| 2911 | template.partialfrag = 1; |
| 2912 | } else if (!strcmp(str, "no-silence")) { |
| 2913 | template.nosilence = 1; |
Takashi Iwai | 10f69f9 | 2005-09-08 13:48:34 +0200 | [diff] [blame] | 2914 | } else if (!strcmp(str, "buggy-ptr")) { |
| 2915 | template.buggyptr = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2916 | } |
| 2917 | } while (*str); |
| 2918 | if (setup == NULL) { |
Takashi Iwai | 060d77b | 2006-03-27 16:44:52 +0200 | [diff] [blame] | 2919 | setup = kmalloc(sizeof(*setup), GFP_KERNEL); |
| 2920 | if (! setup) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2921 | buffer->error = -ENOMEM; |
Jiri Slaby | 9105459 | 2009-03-11 20:11:40 +0100 | [diff] [blame] | 2922 | mutex_unlock(&pstr->oss.setup_mutex); |
Takashi Iwai | 060d77b | 2006-03-27 16:44:52 +0200 | [diff] [blame] | 2923 | return; |
| 2924 | } |
| 2925 | if (pstr->oss.setup_list == NULL) |
| 2926 | pstr->oss.setup_list = setup; |
| 2927 | else { |
| 2928 | for (setup1 = pstr->oss.setup_list; |
| 2929 | setup1->next; setup1 = setup1->next); |
| 2930 | setup1->next = setup; |
| 2931 | } |
| 2932 | template.task_name = kstrdup(task_name, GFP_KERNEL); |
| 2933 | if (! template.task_name) { |
| 2934 | kfree(setup); |
| 2935 | buffer->error = -ENOMEM; |
Jiri Slaby | 9105459 | 2009-03-11 20:11:40 +0100 | [diff] [blame] | 2936 | mutex_unlock(&pstr->oss.setup_mutex); |
Takashi Iwai | 060d77b | 2006-03-27 16:44:52 +0200 | [diff] [blame] | 2937 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2938 | } |
| 2939 | } |
Takashi Iwai | 060d77b | 2006-03-27 16:44:52 +0200 | [diff] [blame] | 2940 | *setup = template; |
Ingo Molnar | 1a60d4c | 2006-01-16 16:29:08 +0100 | [diff] [blame] | 2941 | mutex_unlock(&pstr->oss.setup_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2942 | } |
| 2943 | } |
| 2944 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2945 | static void snd_pcm_oss_proc_init(struct snd_pcm *pcm) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2946 | { |
| 2947 | int stream; |
| 2948 | for (stream = 0; stream < 2; ++stream) { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2949 | struct snd_info_entry *entry; |
| 2950 | struct snd_pcm_str *pstr = &pcm->streams[stream]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2951 | if (pstr->substream_count == 0) |
| 2952 | continue; |
| 2953 | if ((entry = snd_info_create_card_entry(pcm->card, "oss", pstr->proc_root)) != NULL) { |
| 2954 | entry->content = SNDRV_INFO_CONTENT_TEXT; |
| 2955 | entry->mode = S_IFREG | S_IRUGO | S_IWUSR; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2956 | entry->c.text.read = snd_pcm_oss_proc_read; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2957 | entry->c.text.write = snd_pcm_oss_proc_write; |
| 2958 | entry->private_data = pstr; |
| 2959 | if (snd_info_register(entry) < 0) { |
| 2960 | snd_info_free_entry(entry); |
| 2961 | entry = NULL; |
| 2962 | } |
| 2963 | } |
| 2964 | pstr->oss.proc_entry = entry; |
| 2965 | } |
| 2966 | } |
| 2967 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2968 | static void snd_pcm_oss_proc_done(struct snd_pcm *pcm) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2969 | { |
| 2970 | int stream; |
| 2971 | for (stream = 0; stream < 2; ++stream) { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2972 | struct snd_pcm_str *pstr = &pcm->streams[stream]; |
Takashi Iwai | 746d4a0 | 2006-06-23 14:37:59 +0200 | [diff] [blame] | 2973 | snd_info_free_entry(pstr->oss.proc_entry); |
| 2974 | pstr->oss.proc_entry = NULL; |
| 2975 | snd_pcm_oss_proc_free_setup_list(pstr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2976 | } |
| 2977 | } |
Takashi Iwai | b7d90a3 | 2006-04-25 12:56:04 +0200 | [diff] [blame] | 2978 | #else /* !CONFIG_SND_VERBOSE_PROCFS */ |
Takashi Iwai | 04f141a | 2005-12-01 10:43:51 +0100 | [diff] [blame] | 2979 | #define snd_pcm_oss_proc_init(pcm) |
| 2980 | #define snd_pcm_oss_proc_done(pcm) |
Takashi Iwai | b7d90a3 | 2006-04-25 12:56:04 +0200 | [diff] [blame] | 2981 | #endif /* CONFIG_SND_VERBOSE_PROCFS */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2982 | |
| 2983 | /* |
| 2984 | * ENTRY functions |
| 2985 | */ |
| 2986 | |
Arjan van de Ven | 9c2e08c | 2007-02-12 00:55:37 -0800 | [diff] [blame] | 2987 | static const struct file_operations snd_pcm_oss_f_reg = |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2988 | { |
| 2989 | .owner = THIS_MODULE, |
| 2990 | .read = snd_pcm_oss_read, |
| 2991 | .write = snd_pcm_oss_write, |
| 2992 | .open = snd_pcm_oss_open, |
| 2993 | .release = snd_pcm_oss_release, |
Takashi Iwai | 02f4865 | 2010-04-13 11:49:04 +0200 | [diff] [blame] | 2994 | .llseek = no_llseek, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2995 | .poll = snd_pcm_oss_poll, |
| 2996 | .unlocked_ioctl = snd_pcm_oss_ioctl, |
| 2997 | .compat_ioctl = snd_pcm_oss_ioctl_compat, |
| 2998 | .mmap = snd_pcm_oss_mmap, |
| 2999 | }; |
| 3000 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 3001 | static void register_oss_dsp(struct snd_pcm *pcm, int index) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3002 | { |
| 3003 | char name[128]; |
| 3004 | sprintf(name, "dsp%i%i", pcm->card->number, pcm->device); |
| 3005 | if (snd_register_oss_device(SNDRV_OSS_DEVICE_TYPE_PCM, |
Clemens Ladisch | 2af677f | 2005-11-20 14:03:48 +0100 | [diff] [blame] | 3006 | pcm->card, index, &snd_pcm_oss_f_reg, |
Clemens Ladisch | f87135f | 2005-11-20 14:06:59 +0100 | [diff] [blame] | 3007 | pcm, name) < 0) { |
Takashi Iwai | d3d579f | 2005-10-21 16:20:11 +0200 | [diff] [blame] | 3008 | snd_printk(KERN_ERR "unable to register OSS PCM device %i:%i\n", |
| 3009 | pcm->card->number, pcm->device); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3010 | } |
| 3011 | } |
| 3012 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 3013 | static int snd_pcm_oss_register_minor(struct snd_pcm *pcm) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3014 | { |
| 3015 | pcm->oss.reg = 0; |
Jaroslav Kysela | 896e6cc | 2008-08-01 13:36:04 +0200 | [diff] [blame] | 3016 | if (dsp_map[pcm->card->number] == (int)pcm->device) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3017 | char name[128]; |
| 3018 | int duplex; |
| 3019 | register_oss_dsp(pcm, 0); |
| 3020 | duplex = (pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream_count > 0 && |
| 3021 | pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream_count && |
| 3022 | !(pcm->info_flags & SNDRV_PCM_INFO_HALF_DUPLEX)); |
| 3023 | sprintf(name, "%s%s", pcm->name, duplex ? " (DUPLEX)" : ""); |
| 3024 | #ifdef SNDRV_OSS_INFO_DEV_AUDIO |
| 3025 | snd_oss_info_register(SNDRV_OSS_INFO_DEV_AUDIO, |
| 3026 | pcm->card->number, |
| 3027 | name); |
| 3028 | #endif |
| 3029 | pcm->oss.reg++; |
| 3030 | pcm->oss.reg_mask |= 1; |
| 3031 | } |
Jaroslav Kysela | 896e6cc | 2008-08-01 13:36:04 +0200 | [diff] [blame] | 3032 | if (adsp_map[pcm->card->number] == (int)pcm->device) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3033 | register_oss_dsp(pcm, 1); |
| 3034 | pcm->oss.reg++; |
| 3035 | pcm->oss.reg_mask |= 2; |
| 3036 | } |
| 3037 | |
| 3038 | if (pcm->oss.reg) |
| 3039 | snd_pcm_oss_proc_init(pcm); |
| 3040 | |
| 3041 | return 0; |
| 3042 | } |
| 3043 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 3044 | static int snd_pcm_oss_disconnect_minor(struct snd_pcm *pcm) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3045 | { |
| 3046 | if (pcm->oss.reg) { |
| 3047 | if (pcm->oss.reg_mask & 1) { |
| 3048 | pcm->oss.reg_mask &= ~1; |
| 3049 | snd_unregister_oss_device(SNDRV_OSS_DEVICE_TYPE_PCM, |
| 3050 | pcm->card, 0); |
| 3051 | } |
| 3052 | if (pcm->oss.reg_mask & 2) { |
| 3053 | pcm->oss.reg_mask &= ~2; |
| 3054 | snd_unregister_oss_device(SNDRV_OSS_DEVICE_TYPE_PCM, |
| 3055 | pcm->card, 1); |
| 3056 | } |
Jaroslav Kysela | 896e6cc | 2008-08-01 13:36:04 +0200 | [diff] [blame] | 3057 | if (dsp_map[pcm->card->number] == (int)pcm->device) { |
Takashi Iwai | c461482 | 2006-06-23 14:38:23 +0200 | [diff] [blame] | 3058 | #ifdef SNDRV_OSS_INFO_DEV_AUDIO |
| 3059 | snd_oss_info_unregister(SNDRV_OSS_INFO_DEV_AUDIO, pcm->card->number); |
| 3060 | #endif |
| 3061 | } |
| 3062 | pcm->oss.reg = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3063 | } |
| 3064 | return 0; |
| 3065 | } |
| 3066 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 3067 | static int snd_pcm_oss_unregister_minor(struct snd_pcm *pcm) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3068 | { |
| 3069 | snd_pcm_oss_disconnect_minor(pcm); |
Takashi Iwai | c461482 | 2006-06-23 14:38:23 +0200 | [diff] [blame] | 3070 | snd_pcm_oss_proc_done(pcm); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3071 | return 0; |
| 3072 | } |
| 3073 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 3074 | static struct snd_pcm_notify snd_pcm_oss_notify = |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3075 | { |
| 3076 | .n_register = snd_pcm_oss_register_minor, |
| 3077 | .n_disconnect = snd_pcm_oss_disconnect_minor, |
| 3078 | .n_unregister = snd_pcm_oss_unregister_minor, |
| 3079 | }; |
| 3080 | |
| 3081 | static int __init alsa_pcm_oss_init(void) |
| 3082 | { |
| 3083 | int i; |
| 3084 | int err; |
| 3085 | |
| 3086 | /* check device map table */ |
| 3087 | for (i = 0; i < SNDRV_CARDS; i++) { |
Jaroslav Kysela | 896e6cc | 2008-08-01 13:36:04 +0200 | [diff] [blame] | 3088 | if (dsp_map[i] < 0 || dsp_map[i] >= SNDRV_PCM_DEVICES) { |
Takashi Iwai | d3d579f | 2005-10-21 16:20:11 +0200 | [diff] [blame] | 3089 | snd_printk(KERN_ERR "invalid dsp_map[%d] = %d\n", |
| 3090 | i, dsp_map[i]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3091 | dsp_map[i] = 0; |
| 3092 | } |
Jaroslav Kysela | 896e6cc | 2008-08-01 13:36:04 +0200 | [diff] [blame] | 3093 | if (adsp_map[i] < 0 || adsp_map[i] >= SNDRV_PCM_DEVICES) { |
Takashi Iwai | d3d579f | 2005-10-21 16:20:11 +0200 | [diff] [blame] | 3094 | snd_printk(KERN_ERR "invalid adsp_map[%d] = %d\n", |
| 3095 | i, adsp_map[i]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3096 | adsp_map[i] = 1; |
| 3097 | } |
| 3098 | } |
| 3099 | if ((err = snd_pcm_notify(&snd_pcm_oss_notify, 0)) < 0) |
| 3100 | return err; |
| 3101 | return 0; |
| 3102 | } |
| 3103 | |
| 3104 | static void __exit alsa_pcm_oss_exit(void) |
| 3105 | { |
| 3106 | snd_pcm_notify(&snd_pcm_oss_notify, 1); |
| 3107 | } |
| 3108 | |
| 3109 | module_init(alsa_pcm_oss_init) |
| 3110 | module_exit(alsa_pcm_oss_exit) |