Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Digital Audio (PCM) abstract layer / OSS compatible |
| 3 | * Copyright (c) by Jaroslav Kysela <perex@suse.cz> |
| 4 | * |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU General Public License as published by |
| 8 | * the Free Software Foundation; either version 2 of the License, or |
| 9 | * (at your option) any later version. |
| 10 | * |
| 11 | * This program is distributed in the hope that it will be useful, |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | * GNU General Public License for more details. |
| 15 | * |
| 16 | * You should have received a copy of the GNU General Public License |
| 17 | * along with this program; if not, write to the Free Software |
| 18 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 19 | * |
| 20 | */ |
| 21 | |
| 22 | #if 0 |
| 23 | #define PLUGIN_DEBUG |
| 24 | #endif |
| 25 | #if 0 |
| 26 | #define OSS_DEBUG |
| 27 | #endif |
| 28 | |
| 29 | #include <sound/driver.h> |
| 30 | #include <linux/init.h> |
| 31 | #include <linux/smp_lock.h> |
| 32 | #include <linux/slab.h> |
| 33 | #include <linux/time.h> |
| 34 | #include <linux/vmalloc.h> |
| 35 | #include <linux/moduleparam.h> |
Paulo Marques | 543537b | 2005-06-23 00:09:02 -0700 | [diff] [blame] | 36 | #include <linux/string.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 37 | #include <sound/core.h> |
| 38 | #include <sound/minors.h> |
| 39 | #include <sound/pcm.h> |
| 40 | #include <sound/pcm_params.h> |
| 41 | #include "pcm_plugin.h" |
| 42 | #include <sound/info.h> |
| 43 | #include <linux/soundcard.h> |
| 44 | #include <sound/initval.h> |
| 45 | |
| 46 | #define OSS_ALSAEMULVER _SIOR ('M', 249, int) |
| 47 | |
| 48 | static int dsp_map[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS-1)] = 0}; |
| 49 | static int adsp_map[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS-1)] = 1}; |
| 50 | static int nonblock_open = 1; |
| 51 | |
| 52 | MODULE_AUTHOR("Jaroslav Kysela <perex@suse.cz>, Abramo Bagnara <abramo@alsa-project.org>"); |
| 53 | MODULE_DESCRIPTION("PCM OSS emulation for ALSA."); |
| 54 | MODULE_LICENSE("GPL"); |
| 55 | module_param_array(dsp_map, int, NULL, 0444); |
| 56 | MODULE_PARM_DESC(dsp_map, "PCM device number assigned to 1st OSS device."); |
| 57 | module_param_array(adsp_map, int, NULL, 0444); |
| 58 | MODULE_PARM_DESC(adsp_map, "PCM device number assigned to 2nd OSS device."); |
| 59 | module_param(nonblock_open, bool, 0644); |
| 60 | MODULE_PARM_DESC(nonblock_open, "Don't block opening busy PCM devices."); |
| 61 | MODULE_ALIAS_SNDRV_MINOR(SNDRV_MINOR_OSS_PCM); |
| 62 | MODULE_ALIAS_SNDRV_MINOR(SNDRV_MINOR_OSS_PCM1); |
| 63 | |
| 64 | extern int snd_mixer_oss_ioctl_card(snd_card_t *card, unsigned int cmd, unsigned long arg); |
| 65 | static int snd_pcm_oss_get_rate(snd_pcm_oss_file_t *pcm_oss_file); |
| 66 | static int snd_pcm_oss_get_channels(snd_pcm_oss_file_t *pcm_oss_file); |
| 67 | static int snd_pcm_oss_get_format(snd_pcm_oss_file_t *pcm_oss_file); |
| 68 | |
| 69 | static inline mm_segment_t snd_enter_user(void) |
| 70 | { |
| 71 | mm_segment_t fs = get_fs(); |
| 72 | set_fs(get_ds()); |
| 73 | return fs; |
| 74 | } |
| 75 | |
| 76 | static inline void snd_leave_user(mm_segment_t fs) |
| 77 | { |
| 78 | set_fs(fs); |
| 79 | } |
| 80 | |
| 81 | static int snd_pcm_oss_plugin_clear(snd_pcm_substream_t *substream) |
| 82 | { |
| 83 | snd_pcm_runtime_t *runtime = substream->runtime; |
| 84 | snd_pcm_plugin_t *plugin, *next; |
| 85 | |
| 86 | plugin = runtime->oss.plugin_first; |
| 87 | while (plugin) { |
| 88 | next = plugin->next; |
| 89 | snd_pcm_plugin_free(plugin); |
| 90 | plugin = next; |
| 91 | } |
| 92 | runtime->oss.plugin_first = runtime->oss.plugin_last = NULL; |
| 93 | return 0; |
| 94 | } |
| 95 | |
| 96 | static int snd_pcm_plugin_insert(snd_pcm_plugin_t *plugin) |
| 97 | { |
| 98 | snd_pcm_runtime_t *runtime = plugin->plug->runtime; |
| 99 | plugin->next = runtime->oss.plugin_first; |
| 100 | plugin->prev = NULL; |
| 101 | if (runtime->oss.plugin_first) { |
| 102 | runtime->oss.plugin_first->prev = plugin; |
| 103 | runtime->oss.plugin_first = plugin; |
| 104 | } else { |
| 105 | runtime->oss.plugin_last = |
| 106 | runtime->oss.plugin_first = plugin; |
| 107 | } |
| 108 | return 0; |
| 109 | } |
| 110 | |
| 111 | int snd_pcm_plugin_append(snd_pcm_plugin_t *plugin) |
| 112 | { |
| 113 | snd_pcm_runtime_t *runtime = plugin->plug->runtime; |
| 114 | plugin->next = NULL; |
| 115 | plugin->prev = runtime->oss.plugin_last; |
| 116 | if (runtime->oss.plugin_last) { |
| 117 | runtime->oss.plugin_last->next = plugin; |
| 118 | runtime->oss.plugin_last = plugin; |
| 119 | } else { |
| 120 | runtime->oss.plugin_last = |
| 121 | runtime->oss.plugin_first = plugin; |
| 122 | } |
| 123 | return 0; |
| 124 | } |
| 125 | |
| 126 | static long snd_pcm_oss_bytes(snd_pcm_substream_t *substream, long frames) |
| 127 | { |
| 128 | snd_pcm_runtime_t *runtime = substream->runtime; |
Jaroslav Kysela | af08161 | 2005-05-27 11:15:20 +0200 | [diff] [blame] | 129 | long buffer_size = snd_pcm_lib_buffer_bytes(substream); |
Jaroslav Kysela | bfc5bdd | 2005-05-27 11:12:35 +0200 | [diff] [blame] | 130 | long bytes = frames_to_bytes(runtime, frames); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 131 | if (buffer_size == runtime->oss.buffer_bytes) |
Jaroslav Kysela | bfc5bdd | 2005-05-27 11:12:35 +0200 | [diff] [blame] | 132 | return bytes; |
Takashi Iwai | cdc5c53f | 2005-05-27 12:40:52 +0200 | [diff] [blame] | 133 | #if BITS_PER_LONG >= 64 |
| 134 | return runtime->oss.buffer_bytes * bytes / buffer_size; |
| 135 | #else |
| 136 | { |
| 137 | u64 bsize = (u64)runtime->oss.buffer_bytes * (u64)bytes; |
| 138 | u32 rem; |
| 139 | div64_32(&bsize, buffer_size, &rem); |
| 140 | return (long)bsize; |
| 141 | } |
| 142 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 143 | } |
| 144 | |
| 145 | static long snd_pcm_alsa_frames(snd_pcm_substream_t *substream, long bytes) |
| 146 | { |
| 147 | snd_pcm_runtime_t *runtime = substream->runtime; |
Jaroslav Kysela | af08161 | 2005-05-27 11:15:20 +0200 | [diff] [blame] | 148 | long buffer_size = snd_pcm_lib_buffer_bytes(substream); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 149 | if (buffer_size == runtime->oss.buffer_bytes) |
| 150 | return bytes_to_frames(runtime, bytes); |
| 151 | return bytes_to_frames(runtime, (buffer_size * bytes) / runtime->oss.buffer_bytes); |
| 152 | } |
| 153 | |
| 154 | static int snd_pcm_oss_format_from(int format) |
| 155 | { |
| 156 | switch (format) { |
| 157 | case AFMT_MU_LAW: return SNDRV_PCM_FORMAT_MU_LAW; |
| 158 | case AFMT_A_LAW: return SNDRV_PCM_FORMAT_A_LAW; |
| 159 | case AFMT_IMA_ADPCM: return SNDRV_PCM_FORMAT_IMA_ADPCM; |
| 160 | case AFMT_U8: return SNDRV_PCM_FORMAT_U8; |
| 161 | case AFMT_S16_LE: return SNDRV_PCM_FORMAT_S16_LE; |
| 162 | case AFMT_S16_BE: return SNDRV_PCM_FORMAT_S16_BE; |
| 163 | case AFMT_S8: return SNDRV_PCM_FORMAT_S8; |
| 164 | case AFMT_U16_LE: return SNDRV_PCM_FORMAT_U16_LE; |
| 165 | case AFMT_U16_BE: return SNDRV_PCM_FORMAT_U16_BE; |
| 166 | case AFMT_MPEG: return SNDRV_PCM_FORMAT_MPEG; |
| 167 | default: return SNDRV_PCM_FORMAT_U8; |
| 168 | } |
| 169 | } |
| 170 | |
| 171 | static int snd_pcm_oss_format_to(int format) |
| 172 | { |
| 173 | switch (format) { |
| 174 | case SNDRV_PCM_FORMAT_MU_LAW: return AFMT_MU_LAW; |
| 175 | case SNDRV_PCM_FORMAT_A_LAW: return AFMT_A_LAW; |
| 176 | case SNDRV_PCM_FORMAT_IMA_ADPCM: return AFMT_IMA_ADPCM; |
| 177 | case SNDRV_PCM_FORMAT_U8: return AFMT_U8; |
| 178 | case SNDRV_PCM_FORMAT_S16_LE: return AFMT_S16_LE; |
| 179 | case SNDRV_PCM_FORMAT_S16_BE: return AFMT_S16_BE; |
| 180 | case SNDRV_PCM_FORMAT_S8: return AFMT_S8; |
| 181 | case SNDRV_PCM_FORMAT_U16_LE: return AFMT_U16_LE; |
| 182 | case SNDRV_PCM_FORMAT_U16_BE: return AFMT_U16_BE; |
| 183 | case SNDRV_PCM_FORMAT_MPEG: return AFMT_MPEG; |
| 184 | default: return -EINVAL; |
| 185 | } |
| 186 | } |
| 187 | |
| 188 | static int snd_pcm_oss_period_size(snd_pcm_substream_t *substream, |
| 189 | snd_pcm_hw_params_t *oss_params, |
| 190 | snd_pcm_hw_params_t *slave_params) |
| 191 | { |
| 192 | size_t s; |
| 193 | size_t oss_buffer_size, oss_period_size, oss_periods; |
| 194 | size_t min_period_size, max_period_size; |
| 195 | snd_pcm_runtime_t *runtime = substream->runtime; |
| 196 | size_t oss_frame_size; |
| 197 | |
| 198 | oss_frame_size = snd_pcm_format_physical_width(params_format(oss_params)) * |
| 199 | params_channels(oss_params) / 8; |
| 200 | |
| 201 | oss_buffer_size = snd_pcm_plug_client_size(substream, |
| 202 | snd_pcm_hw_param_value_max(slave_params, SNDRV_PCM_HW_PARAM_BUFFER_SIZE, NULL)) * oss_frame_size; |
| 203 | oss_buffer_size = 1 << ld2(oss_buffer_size); |
| 204 | if (atomic_read(&runtime->mmap_count)) { |
| 205 | if (oss_buffer_size > runtime->oss.mmap_bytes) |
| 206 | oss_buffer_size = runtime->oss.mmap_bytes; |
| 207 | } |
| 208 | |
| 209 | if (substream->oss.setup && |
| 210 | substream->oss.setup->period_size > 16) |
| 211 | oss_period_size = substream->oss.setup->period_size; |
| 212 | else if (runtime->oss.fragshift) { |
| 213 | oss_period_size = 1 << runtime->oss.fragshift; |
| 214 | if (oss_period_size > oss_buffer_size / 2) |
| 215 | oss_period_size = oss_buffer_size / 2; |
| 216 | } else { |
| 217 | int sd; |
| 218 | size_t bytes_per_sec = params_rate(oss_params) * snd_pcm_format_physical_width(params_format(oss_params)) * params_channels(oss_params) / 8; |
| 219 | |
| 220 | oss_period_size = oss_buffer_size; |
| 221 | do { |
| 222 | oss_period_size /= 2; |
| 223 | } while (oss_period_size > bytes_per_sec); |
| 224 | if (runtime->oss.subdivision == 0) { |
| 225 | sd = 4; |
| 226 | if (oss_period_size / sd > 4096) |
| 227 | sd *= 2; |
| 228 | if (oss_period_size / sd < 4096) |
| 229 | sd = 1; |
| 230 | } else |
| 231 | sd = runtime->oss.subdivision; |
| 232 | oss_period_size /= sd; |
| 233 | if (oss_period_size < 16) |
| 234 | oss_period_size = 16; |
| 235 | } |
| 236 | |
| 237 | min_period_size = snd_pcm_plug_client_size(substream, |
| 238 | snd_pcm_hw_param_value_min(slave_params, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, NULL)); |
| 239 | min_period_size *= oss_frame_size; |
| 240 | min_period_size = 1 << (ld2(min_period_size - 1) + 1); |
| 241 | if (oss_period_size < min_period_size) |
| 242 | oss_period_size = min_period_size; |
| 243 | |
| 244 | max_period_size = snd_pcm_plug_client_size(substream, |
| 245 | snd_pcm_hw_param_value_max(slave_params, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, NULL)); |
| 246 | max_period_size *= oss_frame_size; |
| 247 | max_period_size = 1 << ld2(max_period_size); |
| 248 | if (oss_period_size > max_period_size) |
| 249 | oss_period_size = max_period_size; |
| 250 | |
| 251 | oss_periods = oss_buffer_size / oss_period_size; |
| 252 | |
| 253 | if (substream->oss.setup) { |
| 254 | if (substream->oss.setup->periods > 1) |
| 255 | oss_periods = substream->oss.setup->periods; |
| 256 | } |
| 257 | |
| 258 | s = snd_pcm_hw_param_value_max(slave_params, SNDRV_PCM_HW_PARAM_PERIODS, NULL); |
| 259 | if (runtime->oss.maxfrags && s > runtime->oss.maxfrags) |
| 260 | s = runtime->oss.maxfrags; |
| 261 | if (oss_periods > s) |
| 262 | oss_periods = s; |
| 263 | |
| 264 | s = snd_pcm_hw_param_value_min(slave_params, SNDRV_PCM_HW_PARAM_PERIODS, NULL); |
| 265 | if (s < 2) |
| 266 | s = 2; |
| 267 | if (oss_periods < s) |
| 268 | oss_periods = s; |
| 269 | |
| 270 | while (oss_period_size * oss_periods > oss_buffer_size) |
| 271 | oss_period_size /= 2; |
| 272 | |
| 273 | snd_assert(oss_period_size >= 16, return -EINVAL); |
| 274 | runtime->oss.period_bytes = oss_period_size; |
| 275 | runtime->oss.period_frames = 1; |
| 276 | runtime->oss.periods = oss_periods; |
| 277 | return 0; |
| 278 | } |
| 279 | |
| 280 | static int choose_rate(snd_pcm_substream_t *substream, |
| 281 | snd_pcm_hw_params_t *params, unsigned int best_rate) |
| 282 | { |
| 283 | snd_interval_t *it; |
| 284 | snd_pcm_hw_params_t *save; |
| 285 | unsigned int rate, prev; |
| 286 | |
| 287 | save = kmalloc(sizeof(*save), GFP_KERNEL); |
| 288 | if (save == NULL) |
| 289 | return -ENOMEM; |
| 290 | *save = *params; |
| 291 | it = hw_param_interval(save, SNDRV_PCM_HW_PARAM_RATE); |
| 292 | |
| 293 | /* try multiples of the best rate */ |
| 294 | rate = best_rate; |
| 295 | for (;;) { |
| 296 | if (it->max < rate || (it->max == rate && it->openmax)) |
| 297 | break; |
| 298 | if (it->min < rate || (it->min == rate && !it->openmin)) { |
| 299 | int ret; |
| 300 | ret = snd_pcm_hw_param_set(substream, params, |
| 301 | SNDRV_PCM_HW_PARAM_RATE, |
| 302 | rate, 0); |
| 303 | if (ret == (int)rate) { |
| 304 | kfree(save); |
| 305 | return rate; |
| 306 | } |
| 307 | *params = *save; |
| 308 | } |
| 309 | prev = rate; |
| 310 | rate += best_rate; |
| 311 | if (rate <= prev) |
| 312 | break; |
| 313 | } |
| 314 | |
| 315 | /* not found, use the nearest rate */ |
| 316 | kfree(save); |
| 317 | return snd_pcm_hw_param_near(substream, params, SNDRV_PCM_HW_PARAM_RATE, best_rate, NULL); |
| 318 | } |
| 319 | |
| 320 | static int snd_pcm_oss_change_params(snd_pcm_substream_t *substream) |
| 321 | { |
| 322 | snd_pcm_runtime_t *runtime = substream->runtime; |
| 323 | snd_pcm_hw_params_t *params, *sparams; |
| 324 | snd_pcm_sw_params_t *sw_params; |
| 325 | ssize_t oss_buffer_size, oss_period_size; |
| 326 | size_t oss_frame_size; |
| 327 | int err; |
| 328 | int direct; |
| 329 | int format, sformat, n; |
| 330 | snd_mask_t sformat_mask; |
| 331 | snd_mask_t mask; |
| 332 | |
| 333 | sw_params = kmalloc(sizeof(*sw_params), GFP_KERNEL); |
| 334 | params = kmalloc(sizeof(*params), GFP_KERNEL); |
| 335 | sparams = kmalloc(sizeof(*sparams), GFP_KERNEL); |
| 336 | if (!sw_params || !params || !sparams) { |
| 337 | snd_printd("No memory\n"); |
| 338 | err = -ENOMEM; |
| 339 | goto failure; |
| 340 | } |
| 341 | |
| 342 | if (atomic_read(&runtime->mmap_count)) { |
| 343 | direct = 1; |
| 344 | } else { |
| 345 | snd_pcm_oss_setup_t *setup = substream->oss.setup; |
| 346 | direct = (setup != NULL && setup->direct); |
| 347 | } |
| 348 | |
| 349 | _snd_pcm_hw_params_any(sparams); |
| 350 | _snd_pcm_hw_param_setinteger(sparams, SNDRV_PCM_HW_PARAM_PERIODS); |
| 351 | _snd_pcm_hw_param_min(sparams, SNDRV_PCM_HW_PARAM_PERIODS, 2, 0); |
| 352 | snd_mask_none(&mask); |
| 353 | if (atomic_read(&runtime->mmap_count)) |
| 354 | snd_mask_set(&mask, SNDRV_PCM_ACCESS_MMAP_INTERLEAVED); |
| 355 | else { |
| 356 | snd_mask_set(&mask, SNDRV_PCM_ACCESS_RW_INTERLEAVED); |
| 357 | if (!direct) |
| 358 | snd_mask_set(&mask, SNDRV_PCM_ACCESS_RW_NONINTERLEAVED); |
| 359 | } |
| 360 | err = snd_pcm_hw_param_mask(substream, sparams, SNDRV_PCM_HW_PARAM_ACCESS, &mask); |
| 361 | if (err < 0) { |
| 362 | snd_printd("No usable accesses\n"); |
| 363 | err = -EINVAL; |
| 364 | goto failure; |
| 365 | } |
| 366 | choose_rate(substream, sparams, runtime->oss.rate); |
| 367 | snd_pcm_hw_param_near(substream, sparams, SNDRV_PCM_HW_PARAM_CHANNELS, runtime->oss.channels, NULL); |
| 368 | |
| 369 | format = snd_pcm_oss_format_from(runtime->oss.format); |
| 370 | |
| 371 | sformat_mask = *hw_param_mask(sparams, SNDRV_PCM_HW_PARAM_FORMAT); |
| 372 | if (direct) |
| 373 | sformat = format; |
| 374 | else |
| 375 | sformat = snd_pcm_plug_slave_format(format, &sformat_mask); |
| 376 | |
| 377 | if (sformat < 0 || !snd_mask_test(&sformat_mask, sformat)) { |
| 378 | for (sformat = 0; sformat <= SNDRV_PCM_FORMAT_LAST; sformat++) { |
| 379 | if (snd_mask_test(&sformat_mask, sformat) && |
| 380 | snd_pcm_oss_format_to(sformat) >= 0) |
| 381 | break; |
| 382 | } |
| 383 | if (sformat > SNDRV_PCM_FORMAT_LAST) { |
| 384 | snd_printd("Cannot find a format!!!\n"); |
| 385 | err = -EINVAL; |
| 386 | goto failure; |
| 387 | } |
| 388 | } |
| 389 | err = _snd_pcm_hw_param_set(sparams, SNDRV_PCM_HW_PARAM_FORMAT, sformat, 0); |
| 390 | snd_assert(err >= 0, goto failure); |
| 391 | |
| 392 | if (direct) { |
| 393 | memcpy(params, sparams, sizeof(*params)); |
| 394 | } else { |
| 395 | _snd_pcm_hw_params_any(params); |
| 396 | _snd_pcm_hw_param_set(params, SNDRV_PCM_HW_PARAM_ACCESS, |
| 397 | SNDRV_PCM_ACCESS_RW_INTERLEAVED, 0); |
| 398 | _snd_pcm_hw_param_set(params, SNDRV_PCM_HW_PARAM_FORMAT, |
| 399 | snd_pcm_oss_format_from(runtime->oss.format), 0); |
| 400 | _snd_pcm_hw_param_set(params, SNDRV_PCM_HW_PARAM_CHANNELS, |
| 401 | runtime->oss.channels, 0); |
| 402 | _snd_pcm_hw_param_set(params, SNDRV_PCM_HW_PARAM_RATE, |
| 403 | runtime->oss.rate, 0); |
| 404 | pdprintf("client: access = %i, format = %i, channels = %i, rate = %i\n", |
| 405 | params_access(params), params_format(params), |
| 406 | params_channels(params), params_rate(params)); |
| 407 | } |
| 408 | pdprintf("slave: access = %i, format = %i, channels = %i, rate = %i\n", |
| 409 | params_access(sparams), params_format(sparams), |
| 410 | params_channels(sparams), params_rate(sparams)); |
| 411 | |
| 412 | oss_frame_size = snd_pcm_format_physical_width(params_format(params)) * |
| 413 | params_channels(params) / 8; |
| 414 | |
| 415 | snd_pcm_oss_plugin_clear(substream); |
| 416 | if (!direct) { |
| 417 | /* add necessary plugins */ |
| 418 | snd_pcm_oss_plugin_clear(substream); |
| 419 | if ((err = snd_pcm_plug_format_plugins(substream, |
| 420 | params, |
| 421 | sparams)) < 0) { |
| 422 | snd_printd("snd_pcm_plug_format_plugins failed: %i\n", err); |
| 423 | snd_pcm_oss_plugin_clear(substream); |
| 424 | goto failure; |
| 425 | } |
| 426 | if (runtime->oss.plugin_first) { |
| 427 | snd_pcm_plugin_t *plugin; |
| 428 | if ((err = snd_pcm_plugin_build_io(substream, sparams, &plugin)) < 0) { |
| 429 | snd_printd("snd_pcm_plugin_build_io failed: %i\n", err); |
| 430 | snd_pcm_oss_plugin_clear(substream); |
| 431 | goto failure; |
| 432 | } |
| 433 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { |
| 434 | err = snd_pcm_plugin_append(plugin); |
| 435 | } else { |
| 436 | err = snd_pcm_plugin_insert(plugin); |
| 437 | } |
| 438 | if (err < 0) { |
| 439 | snd_pcm_oss_plugin_clear(substream); |
| 440 | goto failure; |
| 441 | } |
| 442 | } |
| 443 | } |
| 444 | |
| 445 | err = snd_pcm_oss_period_size(substream, params, sparams); |
| 446 | if (err < 0) |
| 447 | goto failure; |
| 448 | |
| 449 | n = snd_pcm_plug_slave_size(substream, runtime->oss.period_bytes / oss_frame_size); |
| 450 | err = snd_pcm_hw_param_near(substream, sparams, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, n, NULL); |
| 451 | snd_assert(err >= 0, goto failure); |
| 452 | |
| 453 | err = snd_pcm_hw_param_near(substream, sparams, SNDRV_PCM_HW_PARAM_PERIODS, |
| 454 | runtime->oss.periods, NULL); |
| 455 | snd_assert(err >= 0, goto failure); |
| 456 | |
| 457 | snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DROP, NULL); |
| 458 | |
| 459 | if ((err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_HW_PARAMS, sparams)) < 0) { |
| 460 | snd_printd("HW_PARAMS failed: %i\n", err); |
| 461 | goto failure; |
| 462 | } |
| 463 | |
| 464 | memset(sw_params, 0, sizeof(*sw_params)); |
| 465 | if (runtime->oss.trigger) { |
| 466 | sw_params->start_threshold = 1; |
| 467 | } else { |
| 468 | sw_params->start_threshold = runtime->boundary; |
| 469 | } |
| 470 | if (atomic_read(&runtime->mmap_count) || substream->stream == SNDRV_PCM_STREAM_CAPTURE) |
| 471 | sw_params->stop_threshold = runtime->boundary; |
| 472 | else |
| 473 | sw_params->stop_threshold = runtime->buffer_size; |
| 474 | sw_params->tstamp_mode = SNDRV_PCM_TSTAMP_NONE; |
| 475 | sw_params->period_step = 1; |
| 476 | sw_params->sleep_min = 0; |
Takashi Iwai | 004e653 | 2005-04-12 17:33:59 +0200 | [diff] [blame] | 477 | sw_params->avail_min = substream->stream == SNDRV_PCM_STREAM_PLAYBACK ? |
| 478 | 1 : runtime->period_size; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 479 | sw_params->xfer_align = 1; |
| 480 | if (atomic_read(&runtime->mmap_count) || |
| 481 | (substream->oss.setup && substream->oss.setup->nosilence)) { |
| 482 | sw_params->silence_threshold = 0; |
| 483 | sw_params->silence_size = 0; |
| 484 | } else { |
| 485 | snd_pcm_uframes_t frames; |
| 486 | frames = runtime->period_size + 16; |
| 487 | if (frames > runtime->buffer_size) |
| 488 | frames = runtime->buffer_size; |
| 489 | sw_params->silence_threshold = frames; |
| 490 | sw_params->silence_size = frames; |
| 491 | } |
| 492 | |
| 493 | if ((err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_SW_PARAMS, sw_params)) < 0) { |
| 494 | snd_printd("SW_PARAMS failed: %i\n", err); |
| 495 | goto failure; |
| 496 | } |
| 497 | |
| 498 | runtime->oss.periods = params_periods(sparams); |
| 499 | oss_period_size = snd_pcm_plug_client_size(substream, params_period_size(sparams)); |
| 500 | snd_assert(oss_period_size >= 0, err = -EINVAL; goto failure); |
| 501 | if (runtime->oss.plugin_first) { |
| 502 | err = snd_pcm_plug_alloc(substream, oss_period_size); |
| 503 | if (err < 0) |
| 504 | goto failure; |
| 505 | } |
| 506 | oss_period_size *= oss_frame_size; |
| 507 | |
| 508 | oss_buffer_size = oss_period_size * runtime->oss.periods; |
| 509 | snd_assert(oss_buffer_size >= 0, err = -EINVAL; goto failure); |
| 510 | |
| 511 | runtime->oss.period_bytes = oss_period_size; |
| 512 | runtime->oss.buffer_bytes = oss_buffer_size; |
| 513 | |
| 514 | pdprintf("oss: period bytes = %i, buffer bytes = %i\n", |
| 515 | runtime->oss.period_bytes, |
| 516 | runtime->oss.buffer_bytes); |
| 517 | pdprintf("slave: period_size = %i, buffer_size = %i\n", |
| 518 | params_period_size(sparams), |
| 519 | params_buffer_size(sparams)); |
| 520 | |
| 521 | runtime->oss.format = snd_pcm_oss_format_to(params_format(params)); |
| 522 | runtime->oss.channels = params_channels(params); |
| 523 | runtime->oss.rate = params_rate(params); |
| 524 | |
| 525 | runtime->oss.params = 0; |
| 526 | runtime->oss.prepare = 1; |
| 527 | vfree(runtime->oss.buffer); |
| 528 | runtime->oss.buffer = vmalloc(runtime->oss.period_bytes); |
| 529 | runtime->oss.buffer_used = 0; |
| 530 | if (runtime->dma_area) |
| 531 | snd_pcm_format_set_silence(runtime->format, runtime->dma_area, bytes_to_samples(runtime, runtime->dma_bytes)); |
| 532 | |
| 533 | runtime->oss.period_frames = snd_pcm_alsa_frames(substream, oss_period_size); |
| 534 | |
| 535 | err = 0; |
| 536 | failure: |
| 537 | kfree(sw_params); |
| 538 | kfree(params); |
| 539 | kfree(sparams); |
| 540 | return err; |
| 541 | } |
| 542 | |
| 543 | static int snd_pcm_oss_get_active_substream(snd_pcm_oss_file_t *pcm_oss_file, snd_pcm_substream_t **r_substream) |
| 544 | { |
| 545 | int idx, err; |
| 546 | snd_pcm_substream_t *asubstream = NULL, *substream; |
| 547 | |
| 548 | for (idx = 0; idx < 2; idx++) { |
| 549 | substream = pcm_oss_file->streams[idx]; |
| 550 | if (substream == NULL) |
| 551 | continue; |
| 552 | if (asubstream == NULL) |
| 553 | asubstream = substream; |
| 554 | if (substream->runtime->oss.params) { |
| 555 | err = snd_pcm_oss_change_params(substream); |
| 556 | if (err < 0) |
| 557 | return err; |
| 558 | } |
| 559 | } |
| 560 | snd_assert(asubstream != NULL, return -EIO); |
| 561 | if (r_substream) |
| 562 | *r_substream = asubstream; |
| 563 | return 0; |
| 564 | } |
| 565 | |
| 566 | static int snd_pcm_oss_prepare(snd_pcm_substream_t *substream) |
| 567 | { |
| 568 | int err; |
| 569 | snd_pcm_runtime_t *runtime = substream->runtime; |
| 570 | |
| 571 | err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_PREPARE, NULL); |
| 572 | if (err < 0) { |
| 573 | snd_printd("snd_pcm_oss_prepare: SNDRV_PCM_IOCTL_PREPARE failed\n"); |
| 574 | return err; |
| 575 | } |
| 576 | runtime->oss.prepare = 0; |
| 577 | runtime->oss.prev_hw_ptr_interrupt = 0; |
| 578 | runtime->oss.period_ptr = 0; |
| 579 | runtime->oss.buffer_used = 0; |
| 580 | |
| 581 | return 0; |
| 582 | } |
| 583 | |
| 584 | static int snd_pcm_oss_make_ready(snd_pcm_substream_t *substream) |
| 585 | { |
| 586 | snd_pcm_runtime_t *runtime; |
| 587 | int err; |
| 588 | |
| 589 | if (substream == NULL) |
| 590 | return 0; |
| 591 | runtime = substream->runtime; |
| 592 | if (runtime->oss.params) { |
| 593 | err = snd_pcm_oss_change_params(substream); |
| 594 | if (err < 0) |
| 595 | return err; |
| 596 | } |
| 597 | if (runtime->oss.prepare) { |
| 598 | err = snd_pcm_oss_prepare(substream); |
| 599 | if (err < 0) |
| 600 | return err; |
| 601 | } |
| 602 | return 0; |
| 603 | } |
| 604 | |
| 605 | static int snd_pcm_oss_capture_position_fixup(snd_pcm_substream_t *substream, snd_pcm_sframes_t *delay) |
| 606 | { |
| 607 | snd_pcm_runtime_t *runtime; |
| 608 | snd_pcm_uframes_t frames; |
| 609 | int err = 0; |
| 610 | |
| 611 | while (1) { |
| 612 | err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DELAY, delay); |
| 613 | if (err < 0) |
| 614 | break; |
| 615 | runtime = substream->runtime; |
| 616 | if (*delay <= (snd_pcm_sframes_t)runtime->buffer_size) |
| 617 | break; |
| 618 | /* in case of overrun, skip whole periods like OSS/Linux driver does */ |
| 619 | /* until avail(delay) <= buffer_size */ |
| 620 | frames = (*delay - runtime->buffer_size) + runtime->period_size - 1; |
| 621 | frames /= runtime->period_size; |
| 622 | frames *= runtime->period_size; |
| 623 | err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_FORWARD, &frames); |
| 624 | if (err < 0) |
| 625 | break; |
| 626 | } |
| 627 | return err; |
| 628 | } |
| 629 | |
| 630 | snd_pcm_sframes_t snd_pcm_oss_write3(snd_pcm_substream_t *substream, const char *ptr, snd_pcm_uframes_t frames, int in_kernel) |
| 631 | { |
| 632 | snd_pcm_runtime_t *runtime = substream->runtime; |
| 633 | int ret; |
| 634 | while (1) { |
| 635 | if (runtime->status->state == SNDRV_PCM_STATE_XRUN || |
| 636 | runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) { |
| 637 | #ifdef OSS_DEBUG |
| 638 | if (runtime->status->state == SNDRV_PCM_STATE_XRUN) |
| 639 | printk("pcm_oss: write: recovering from XRUN\n"); |
| 640 | else |
| 641 | printk("pcm_oss: write: recovering from SUSPEND\n"); |
| 642 | #endif |
| 643 | ret = snd_pcm_oss_prepare(substream); |
| 644 | if (ret < 0) |
| 645 | break; |
| 646 | } |
| 647 | if (in_kernel) { |
| 648 | mm_segment_t fs; |
| 649 | fs = snd_enter_user(); |
| 650 | ret = snd_pcm_lib_write(substream, (void __user *)ptr, frames); |
| 651 | snd_leave_user(fs); |
| 652 | } else { |
| 653 | ret = snd_pcm_lib_write(substream, (void __user *)ptr, frames); |
| 654 | } |
| 655 | if (ret != -EPIPE && ret != -ESTRPIPE) |
| 656 | break; |
| 657 | /* test, if we can't store new data, because the stream */ |
| 658 | /* has not been started */ |
| 659 | if (runtime->status->state == SNDRV_PCM_STATE_PREPARED) |
| 660 | return -EAGAIN; |
| 661 | } |
| 662 | return ret; |
| 663 | } |
| 664 | |
| 665 | snd_pcm_sframes_t snd_pcm_oss_read3(snd_pcm_substream_t *substream, char *ptr, snd_pcm_uframes_t frames, int in_kernel) |
| 666 | { |
| 667 | snd_pcm_runtime_t *runtime = substream->runtime; |
| 668 | snd_pcm_sframes_t delay; |
| 669 | int ret; |
| 670 | while (1) { |
| 671 | if (runtime->status->state == SNDRV_PCM_STATE_XRUN || |
| 672 | runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) { |
| 673 | #ifdef OSS_DEBUG |
| 674 | if (runtime->status->state == SNDRV_PCM_STATE_XRUN) |
| 675 | printk("pcm_oss: read: recovering from XRUN\n"); |
| 676 | else |
| 677 | printk("pcm_oss: read: recovering from SUSPEND\n"); |
| 678 | #endif |
| 679 | ret = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DRAIN, NULL); |
| 680 | if (ret < 0) |
| 681 | break; |
| 682 | } else if (runtime->status->state == SNDRV_PCM_STATE_SETUP) { |
| 683 | ret = snd_pcm_oss_prepare(substream); |
| 684 | if (ret < 0) |
| 685 | break; |
| 686 | } |
| 687 | ret = snd_pcm_oss_capture_position_fixup(substream, &delay); |
| 688 | if (ret < 0) |
| 689 | break; |
| 690 | if (in_kernel) { |
| 691 | mm_segment_t fs; |
| 692 | fs = snd_enter_user(); |
| 693 | ret = snd_pcm_lib_read(substream, (void __user *)ptr, frames); |
| 694 | snd_leave_user(fs); |
| 695 | } else { |
| 696 | ret = snd_pcm_lib_read(substream, (void __user *)ptr, frames); |
| 697 | } |
| 698 | if (ret == -EPIPE) { |
| 699 | if (runtime->status->state == SNDRV_PCM_STATE_DRAINING) { |
| 700 | ret = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DROP, NULL); |
| 701 | if (ret < 0) |
| 702 | break; |
| 703 | } |
| 704 | continue; |
| 705 | } |
| 706 | if (ret != -ESTRPIPE) |
| 707 | break; |
| 708 | } |
| 709 | return ret; |
| 710 | } |
| 711 | |
| 712 | snd_pcm_sframes_t snd_pcm_oss_writev3(snd_pcm_substream_t *substream, void **bufs, snd_pcm_uframes_t frames, int in_kernel) |
| 713 | { |
| 714 | snd_pcm_runtime_t *runtime = substream->runtime; |
| 715 | int ret; |
| 716 | while (1) { |
| 717 | if (runtime->status->state == SNDRV_PCM_STATE_XRUN || |
| 718 | runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) { |
| 719 | #ifdef OSS_DEBUG |
| 720 | if (runtime->status->state == SNDRV_PCM_STATE_XRUN) |
| 721 | printk("pcm_oss: writev: recovering from XRUN\n"); |
| 722 | else |
| 723 | printk("pcm_oss: writev: recovering from SUSPEND\n"); |
| 724 | #endif |
| 725 | ret = snd_pcm_oss_prepare(substream); |
| 726 | if (ret < 0) |
| 727 | break; |
| 728 | } |
| 729 | if (in_kernel) { |
| 730 | mm_segment_t fs; |
| 731 | fs = snd_enter_user(); |
| 732 | ret = snd_pcm_lib_writev(substream, (void __user **)bufs, frames); |
| 733 | snd_leave_user(fs); |
| 734 | } else { |
| 735 | ret = snd_pcm_lib_writev(substream, (void __user **)bufs, frames); |
| 736 | } |
| 737 | if (ret != -EPIPE && ret != -ESTRPIPE) |
| 738 | break; |
| 739 | |
| 740 | /* test, if we can't store new data, because the stream */ |
| 741 | /* has not been started */ |
| 742 | if (runtime->status->state == SNDRV_PCM_STATE_PREPARED) |
| 743 | return -EAGAIN; |
| 744 | } |
| 745 | return ret; |
| 746 | } |
| 747 | |
| 748 | snd_pcm_sframes_t snd_pcm_oss_readv3(snd_pcm_substream_t *substream, void **bufs, snd_pcm_uframes_t frames, int in_kernel) |
| 749 | { |
| 750 | snd_pcm_runtime_t *runtime = substream->runtime; |
| 751 | int ret; |
| 752 | while (1) { |
| 753 | if (runtime->status->state == SNDRV_PCM_STATE_XRUN || |
| 754 | runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) { |
| 755 | #ifdef OSS_DEBUG |
| 756 | if (runtime->status->state == SNDRV_PCM_STATE_XRUN) |
| 757 | printk("pcm_oss: readv: recovering from XRUN\n"); |
| 758 | else |
| 759 | printk("pcm_oss: readv: recovering from SUSPEND\n"); |
| 760 | #endif |
| 761 | ret = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DRAIN, NULL); |
| 762 | if (ret < 0) |
| 763 | break; |
| 764 | } else if (runtime->status->state == SNDRV_PCM_STATE_SETUP) { |
| 765 | ret = snd_pcm_oss_prepare(substream); |
| 766 | if (ret < 0) |
| 767 | break; |
| 768 | } |
| 769 | if (in_kernel) { |
| 770 | mm_segment_t fs; |
| 771 | fs = snd_enter_user(); |
| 772 | ret = snd_pcm_lib_readv(substream, (void __user **)bufs, frames); |
| 773 | snd_leave_user(fs); |
| 774 | } else { |
| 775 | ret = snd_pcm_lib_readv(substream, (void __user **)bufs, frames); |
| 776 | } |
| 777 | if (ret != -EPIPE && ret != -ESTRPIPE) |
| 778 | break; |
| 779 | } |
| 780 | return ret; |
| 781 | } |
| 782 | |
| 783 | static ssize_t snd_pcm_oss_write2(snd_pcm_substream_t *substream, const char *buf, size_t bytes, int in_kernel) |
| 784 | { |
| 785 | snd_pcm_runtime_t *runtime = substream->runtime; |
| 786 | snd_pcm_sframes_t frames, frames1; |
| 787 | if (runtime->oss.plugin_first) { |
| 788 | snd_pcm_plugin_channel_t *channels; |
| 789 | size_t oss_frame_bytes = (runtime->oss.plugin_first->src_width * runtime->oss.plugin_first->src_format.channels) / 8; |
| 790 | if (!in_kernel) { |
| 791 | if (copy_from_user(runtime->oss.buffer, (const char __user *)buf, bytes)) |
| 792 | return -EFAULT; |
| 793 | buf = runtime->oss.buffer; |
| 794 | } |
| 795 | frames = bytes / oss_frame_bytes; |
| 796 | frames1 = snd_pcm_plug_client_channels_buf(substream, (char *)buf, frames, &channels); |
| 797 | if (frames1 < 0) |
| 798 | return frames1; |
| 799 | frames1 = snd_pcm_plug_write_transfer(substream, channels, frames1); |
| 800 | if (frames1 <= 0) |
| 801 | return frames1; |
| 802 | bytes = frames1 * oss_frame_bytes; |
| 803 | } else { |
| 804 | frames = bytes_to_frames(runtime, bytes); |
| 805 | frames1 = snd_pcm_oss_write3(substream, buf, frames, in_kernel); |
| 806 | if (frames1 <= 0) |
| 807 | return frames1; |
| 808 | bytes = frames_to_bytes(runtime, frames1); |
| 809 | } |
| 810 | return bytes; |
| 811 | } |
| 812 | |
| 813 | static ssize_t snd_pcm_oss_write1(snd_pcm_substream_t *substream, const char __user *buf, size_t bytes) |
| 814 | { |
| 815 | size_t xfer = 0; |
| 816 | ssize_t tmp; |
| 817 | snd_pcm_runtime_t *runtime = substream->runtime; |
| 818 | |
| 819 | if (atomic_read(&runtime->mmap_count)) |
| 820 | return -ENXIO; |
| 821 | |
| 822 | if ((tmp = snd_pcm_oss_make_ready(substream)) < 0) |
| 823 | return tmp; |
| 824 | while (bytes > 0) { |
| 825 | if (bytes < runtime->oss.period_bytes || runtime->oss.buffer_used > 0) { |
| 826 | tmp = bytes; |
| 827 | if (tmp + runtime->oss.buffer_used > runtime->oss.period_bytes) |
| 828 | tmp = runtime->oss.period_bytes - runtime->oss.buffer_used; |
| 829 | if (tmp > 0) { |
| 830 | if (copy_from_user(runtime->oss.buffer + runtime->oss.buffer_used, buf, tmp)) |
| 831 | return xfer > 0 ? (snd_pcm_sframes_t)xfer : -EFAULT; |
| 832 | } |
| 833 | runtime->oss.buffer_used += tmp; |
| 834 | buf += tmp; |
| 835 | bytes -= tmp; |
| 836 | xfer += tmp; |
| 837 | if ((substream->oss.setup != NULL && substream->oss.setup->partialfrag) || |
| 838 | runtime->oss.buffer_used == runtime->oss.period_bytes) { |
| 839 | tmp = snd_pcm_oss_write2(substream, runtime->oss.buffer + runtime->oss.period_ptr, |
| 840 | runtime->oss.buffer_used - runtime->oss.period_ptr, 1); |
| 841 | if (tmp <= 0) |
| 842 | return xfer > 0 ? (snd_pcm_sframes_t)xfer : tmp; |
| 843 | runtime->oss.bytes += tmp; |
| 844 | runtime->oss.period_ptr += tmp; |
| 845 | runtime->oss.period_ptr %= runtime->oss.period_bytes; |
| 846 | if (runtime->oss.period_ptr == 0 || |
| 847 | runtime->oss.period_ptr == runtime->oss.buffer_used) |
| 848 | runtime->oss.buffer_used = 0; |
| 849 | else if ((substream->ffile->f_flags & O_NONBLOCK) != 0) |
| 850 | return xfer > 0 ? xfer : -EAGAIN; |
| 851 | } |
| 852 | } else { |
Clemens Ladisch | 4d23359 | 2005-09-05 10:35:20 +0200 | [diff] [blame] | 853 | tmp = snd_pcm_oss_write2(substream, |
| 854 | (const char __force *)buf, |
| 855 | runtime->oss.period_bytes, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 856 | if (tmp <= 0) |
| 857 | return xfer > 0 ? (snd_pcm_sframes_t)xfer : tmp; |
| 858 | runtime->oss.bytes += tmp; |
| 859 | buf += tmp; |
| 860 | bytes -= tmp; |
| 861 | xfer += tmp; |
| 862 | if ((substream->ffile->f_flags & O_NONBLOCK) != 0 && |
| 863 | tmp != runtime->oss.period_bytes) |
| 864 | break; |
| 865 | } |
| 866 | } |
| 867 | return xfer; |
| 868 | } |
| 869 | |
| 870 | static ssize_t snd_pcm_oss_read2(snd_pcm_substream_t *substream, char *buf, size_t bytes, int in_kernel) |
| 871 | { |
| 872 | snd_pcm_runtime_t *runtime = substream->runtime; |
| 873 | snd_pcm_sframes_t frames, frames1; |
| 874 | char __user *final_dst = (char __user *)buf; |
| 875 | if (runtime->oss.plugin_first) { |
| 876 | snd_pcm_plugin_channel_t *channels; |
| 877 | size_t oss_frame_bytes = (runtime->oss.plugin_last->dst_width * runtime->oss.plugin_last->dst_format.channels) / 8; |
| 878 | if (!in_kernel) |
| 879 | buf = runtime->oss.buffer; |
| 880 | frames = bytes / oss_frame_bytes; |
| 881 | frames1 = snd_pcm_plug_client_channels_buf(substream, buf, frames, &channels); |
| 882 | if (frames1 < 0) |
| 883 | return frames1; |
| 884 | frames1 = snd_pcm_plug_read_transfer(substream, channels, frames1); |
| 885 | if (frames1 <= 0) |
| 886 | return frames1; |
| 887 | bytes = frames1 * oss_frame_bytes; |
| 888 | if (!in_kernel && copy_to_user(final_dst, buf, bytes)) |
| 889 | return -EFAULT; |
| 890 | } else { |
| 891 | frames = bytes_to_frames(runtime, bytes); |
| 892 | frames1 = snd_pcm_oss_read3(substream, buf, frames, in_kernel); |
| 893 | if (frames1 <= 0) |
| 894 | return frames1; |
| 895 | bytes = frames_to_bytes(runtime, frames1); |
| 896 | } |
| 897 | return bytes; |
| 898 | } |
| 899 | |
| 900 | static ssize_t snd_pcm_oss_read1(snd_pcm_substream_t *substream, char __user *buf, size_t bytes) |
| 901 | { |
| 902 | size_t xfer = 0; |
| 903 | ssize_t tmp; |
| 904 | snd_pcm_runtime_t *runtime = substream->runtime; |
| 905 | |
| 906 | if (atomic_read(&runtime->mmap_count)) |
| 907 | return -ENXIO; |
| 908 | |
| 909 | if ((tmp = snd_pcm_oss_make_ready(substream)) < 0) |
| 910 | return tmp; |
| 911 | while (bytes > 0) { |
| 912 | if (bytes < runtime->oss.period_bytes || runtime->oss.buffer_used > 0) { |
| 913 | if (runtime->oss.buffer_used == 0) { |
| 914 | tmp = snd_pcm_oss_read2(substream, runtime->oss.buffer, runtime->oss.period_bytes, 1); |
| 915 | if (tmp <= 0) |
| 916 | return xfer > 0 ? (snd_pcm_sframes_t)xfer : tmp; |
| 917 | runtime->oss.bytes += tmp; |
| 918 | runtime->oss.period_ptr = tmp; |
| 919 | runtime->oss.buffer_used = tmp; |
| 920 | } |
| 921 | tmp = bytes; |
| 922 | if ((size_t) tmp > runtime->oss.buffer_used) |
| 923 | tmp = runtime->oss.buffer_used; |
| 924 | if (copy_to_user(buf, runtime->oss.buffer + (runtime->oss.period_ptr - runtime->oss.buffer_used), tmp)) |
| 925 | return xfer > 0 ? (snd_pcm_sframes_t)xfer : -EFAULT; |
| 926 | buf += tmp; |
| 927 | bytes -= tmp; |
| 928 | xfer += tmp; |
| 929 | runtime->oss.buffer_used -= tmp; |
| 930 | } else { |
Clemens Ladisch | 4d23359 | 2005-09-05 10:35:20 +0200 | [diff] [blame] | 931 | tmp = snd_pcm_oss_read2(substream, (char __force *)buf, |
| 932 | runtime->oss.period_bytes, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 933 | if (tmp <= 0) |
| 934 | return xfer > 0 ? (snd_pcm_sframes_t)xfer : tmp; |
| 935 | runtime->oss.bytes += tmp; |
| 936 | buf += tmp; |
| 937 | bytes -= tmp; |
| 938 | xfer += tmp; |
| 939 | } |
| 940 | } |
| 941 | return xfer; |
| 942 | } |
| 943 | |
| 944 | static int snd_pcm_oss_reset(snd_pcm_oss_file_t *pcm_oss_file) |
| 945 | { |
| 946 | snd_pcm_substream_t *substream; |
| 947 | |
| 948 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK]; |
| 949 | if (substream != NULL) { |
| 950 | snd_pcm_kernel_playback_ioctl(substream, SNDRV_PCM_IOCTL_DROP, NULL); |
| 951 | substream->runtime->oss.prepare = 1; |
| 952 | } |
| 953 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE]; |
| 954 | if (substream != NULL) { |
| 955 | snd_pcm_kernel_capture_ioctl(substream, SNDRV_PCM_IOCTL_DROP, NULL); |
| 956 | substream->runtime->oss.prepare = 1; |
| 957 | } |
| 958 | return 0; |
| 959 | } |
| 960 | |
| 961 | static int snd_pcm_oss_post(snd_pcm_oss_file_t *pcm_oss_file) |
| 962 | { |
| 963 | snd_pcm_substream_t *substream; |
| 964 | int err; |
| 965 | |
| 966 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK]; |
| 967 | if (substream != NULL) { |
| 968 | if ((err = snd_pcm_oss_make_ready(substream)) < 0) |
| 969 | return err; |
| 970 | snd_pcm_kernel_playback_ioctl(substream, SNDRV_PCM_IOCTL_START, NULL); |
| 971 | } |
| 972 | /* note: all errors from the start action are ignored */ |
| 973 | /* OSS apps do not know, how to handle them */ |
| 974 | return 0; |
| 975 | } |
| 976 | |
| 977 | static int snd_pcm_oss_sync1(snd_pcm_substream_t *substream, size_t size) |
| 978 | { |
| 979 | snd_pcm_runtime_t *runtime; |
| 980 | ssize_t result = 0; |
| 981 | long res; |
| 982 | wait_queue_t wait; |
| 983 | |
| 984 | runtime = substream->runtime; |
| 985 | init_waitqueue_entry(&wait, current); |
| 986 | add_wait_queue(&runtime->sleep, &wait); |
| 987 | #ifdef OSS_DEBUG |
| 988 | printk("sync1: size = %li\n", size); |
| 989 | #endif |
| 990 | while (1) { |
| 991 | result = snd_pcm_oss_write2(substream, runtime->oss.buffer, size, 1); |
| 992 | if (result > 0) { |
| 993 | runtime->oss.buffer_used = 0; |
| 994 | result = 0; |
| 995 | break; |
| 996 | } |
| 997 | if (result != 0 && result != -EAGAIN) |
| 998 | break; |
| 999 | result = 0; |
| 1000 | set_current_state(TASK_INTERRUPTIBLE); |
| 1001 | snd_pcm_stream_lock_irq(substream); |
| 1002 | res = runtime->status->state; |
| 1003 | snd_pcm_stream_unlock_irq(substream); |
| 1004 | if (res != SNDRV_PCM_STATE_RUNNING) { |
| 1005 | set_current_state(TASK_RUNNING); |
| 1006 | break; |
| 1007 | } |
| 1008 | res = schedule_timeout(10 * HZ); |
| 1009 | if (signal_pending(current)) { |
| 1010 | result = -ERESTARTSYS; |
| 1011 | break; |
| 1012 | } |
| 1013 | if (res == 0) { |
| 1014 | snd_printk(KERN_ERR "OSS sync error - DMA timeout\n"); |
| 1015 | result = -EIO; |
| 1016 | break; |
| 1017 | } |
| 1018 | } |
| 1019 | remove_wait_queue(&runtime->sleep, &wait); |
| 1020 | return result; |
| 1021 | } |
| 1022 | |
| 1023 | static int snd_pcm_oss_sync(snd_pcm_oss_file_t *pcm_oss_file) |
| 1024 | { |
| 1025 | int err = 0; |
| 1026 | unsigned int saved_f_flags; |
| 1027 | snd_pcm_substream_t *substream; |
| 1028 | snd_pcm_runtime_t *runtime; |
| 1029 | snd_pcm_format_t format; |
| 1030 | unsigned long width; |
| 1031 | size_t size; |
| 1032 | |
| 1033 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK]; |
| 1034 | if (substream != NULL) { |
| 1035 | runtime = substream->runtime; |
| 1036 | if (atomic_read(&runtime->mmap_count)) |
| 1037 | goto __direct; |
| 1038 | if ((err = snd_pcm_oss_make_ready(substream)) < 0) |
| 1039 | return err; |
| 1040 | format = snd_pcm_oss_format_from(runtime->oss.format); |
| 1041 | width = snd_pcm_format_physical_width(format); |
| 1042 | if (runtime->oss.buffer_used > 0) { |
| 1043 | #ifdef OSS_DEBUG |
| 1044 | printk("sync: buffer_used\n"); |
| 1045 | #endif |
| 1046 | size = (8 * (runtime->oss.period_bytes - runtime->oss.buffer_used) + 7) / width; |
| 1047 | snd_pcm_format_set_silence(format, |
| 1048 | runtime->oss.buffer + runtime->oss.buffer_used, |
| 1049 | size); |
| 1050 | err = snd_pcm_oss_sync1(substream, runtime->oss.period_bytes); |
| 1051 | if (err < 0) |
| 1052 | return err; |
| 1053 | } else if (runtime->oss.period_ptr > 0) { |
| 1054 | #ifdef OSS_DEBUG |
| 1055 | printk("sync: period_ptr\n"); |
| 1056 | #endif |
| 1057 | size = runtime->oss.period_bytes - runtime->oss.period_ptr; |
| 1058 | snd_pcm_format_set_silence(format, |
| 1059 | runtime->oss.buffer, |
| 1060 | size * 8 / width); |
| 1061 | err = snd_pcm_oss_sync1(substream, size); |
| 1062 | if (err < 0) |
| 1063 | return err; |
| 1064 | } |
| 1065 | /* |
| 1066 | * The ALSA's period might be a bit large than OSS one. |
| 1067 | * Fill the remain portion of ALSA period with zeros. |
| 1068 | */ |
| 1069 | size = runtime->control->appl_ptr % runtime->period_size; |
| 1070 | if (size > 0) { |
| 1071 | size = runtime->period_size - size; |
| 1072 | if (runtime->access == SNDRV_PCM_ACCESS_RW_INTERLEAVED) { |
| 1073 | size = (runtime->frame_bits * size) / 8; |
| 1074 | while (size > 0) { |
| 1075 | mm_segment_t fs; |
| 1076 | size_t size1 = size < runtime->oss.period_bytes ? size : runtime->oss.period_bytes; |
| 1077 | size -= size1; |
| 1078 | size1 *= 8; |
| 1079 | size1 /= runtime->sample_bits; |
| 1080 | snd_pcm_format_set_silence(runtime->format, |
| 1081 | runtime->oss.buffer, |
| 1082 | size1); |
| 1083 | fs = snd_enter_user(); |
| 1084 | snd_pcm_lib_write(substream, (void __user *)runtime->oss.buffer, size1); |
| 1085 | snd_leave_user(fs); |
| 1086 | } |
| 1087 | } else if (runtime->access == SNDRV_PCM_ACCESS_RW_NONINTERLEAVED) { |
| 1088 | void __user *buffers[runtime->channels]; |
| 1089 | memset(buffers, 0, runtime->channels * sizeof(void *)); |
| 1090 | snd_pcm_lib_writev(substream, buffers, size); |
| 1091 | } |
| 1092 | } |
| 1093 | /* |
| 1094 | * finish sync: drain the buffer |
| 1095 | */ |
| 1096 | __direct: |
| 1097 | saved_f_flags = substream->ffile->f_flags; |
| 1098 | substream->ffile->f_flags &= ~O_NONBLOCK; |
| 1099 | err = snd_pcm_kernel_playback_ioctl(substream, SNDRV_PCM_IOCTL_DRAIN, NULL); |
| 1100 | substream->ffile->f_flags = saved_f_flags; |
| 1101 | if (err < 0) |
| 1102 | return err; |
| 1103 | runtime->oss.prepare = 1; |
| 1104 | } |
| 1105 | |
| 1106 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE]; |
| 1107 | if (substream != NULL) { |
| 1108 | if ((err = snd_pcm_oss_make_ready(substream)) < 0) |
| 1109 | return err; |
| 1110 | runtime = substream->runtime; |
| 1111 | err = snd_pcm_kernel_capture_ioctl(substream, SNDRV_PCM_IOCTL_DROP, NULL); |
| 1112 | if (err < 0) |
| 1113 | return err; |
| 1114 | runtime->oss.buffer_used = 0; |
| 1115 | runtime->oss.prepare = 1; |
| 1116 | } |
| 1117 | return 0; |
| 1118 | } |
| 1119 | |
| 1120 | static int snd_pcm_oss_set_rate(snd_pcm_oss_file_t *pcm_oss_file, int rate) |
| 1121 | { |
| 1122 | int idx; |
| 1123 | |
| 1124 | for (idx = 1; idx >= 0; --idx) { |
| 1125 | snd_pcm_substream_t *substream = pcm_oss_file->streams[idx]; |
| 1126 | snd_pcm_runtime_t *runtime; |
| 1127 | if (substream == NULL) |
| 1128 | continue; |
| 1129 | runtime = substream->runtime; |
| 1130 | if (rate < 1000) |
| 1131 | rate = 1000; |
| 1132 | else if (rate > 192000) |
| 1133 | rate = 192000; |
| 1134 | if (runtime->oss.rate != rate) { |
| 1135 | runtime->oss.params = 1; |
| 1136 | runtime->oss.rate = rate; |
| 1137 | } |
| 1138 | } |
| 1139 | return snd_pcm_oss_get_rate(pcm_oss_file); |
| 1140 | } |
| 1141 | |
| 1142 | static int snd_pcm_oss_get_rate(snd_pcm_oss_file_t *pcm_oss_file) |
| 1143 | { |
| 1144 | snd_pcm_substream_t *substream; |
| 1145 | int err; |
| 1146 | |
| 1147 | if ((err = snd_pcm_oss_get_active_substream(pcm_oss_file, &substream)) < 0) |
| 1148 | return err; |
| 1149 | return substream->runtime->oss.rate; |
| 1150 | } |
| 1151 | |
| 1152 | static int snd_pcm_oss_set_channels(snd_pcm_oss_file_t *pcm_oss_file, unsigned int channels) |
| 1153 | { |
| 1154 | int idx; |
| 1155 | if (channels < 1) |
| 1156 | channels = 1; |
| 1157 | if (channels > 128) |
| 1158 | return -EINVAL; |
| 1159 | for (idx = 1; idx >= 0; --idx) { |
| 1160 | snd_pcm_substream_t *substream = pcm_oss_file->streams[idx]; |
| 1161 | snd_pcm_runtime_t *runtime; |
| 1162 | if (substream == NULL) |
| 1163 | continue; |
| 1164 | runtime = substream->runtime; |
| 1165 | if (runtime->oss.channels != channels) { |
| 1166 | runtime->oss.params = 1; |
| 1167 | runtime->oss.channels = channels; |
| 1168 | } |
| 1169 | } |
| 1170 | return snd_pcm_oss_get_channels(pcm_oss_file); |
| 1171 | } |
| 1172 | |
| 1173 | static int snd_pcm_oss_get_channels(snd_pcm_oss_file_t *pcm_oss_file) |
| 1174 | { |
| 1175 | snd_pcm_substream_t *substream; |
| 1176 | int err; |
| 1177 | |
| 1178 | if ((err = snd_pcm_oss_get_active_substream(pcm_oss_file, &substream)) < 0) |
| 1179 | return err; |
| 1180 | return substream->runtime->oss.channels; |
| 1181 | } |
| 1182 | |
| 1183 | static int snd_pcm_oss_get_block_size(snd_pcm_oss_file_t *pcm_oss_file) |
| 1184 | { |
| 1185 | snd_pcm_substream_t *substream; |
| 1186 | int err; |
| 1187 | |
| 1188 | if ((err = snd_pcm_oss_get_active_substream(pcm_oss_file, &substream)) < 0) |
| 1189 | return err; |
| 1190 | return substream->runtime->oss.period_bytes; |
| 1191 | } |
| 1192 | |
| 1193 | static int snd_pcm_oss_get_formats(snd_pcm_oss_file_t *pcm_oss_file) |
| 1194 | { |
| 1195 | snd_pcm_substream_t *substream; |
| 1196 | int err; |
| 1197 | int direct; |
| 1198 | snd_pcm_hw_params_t *params; |
| 1199 | unsigned int formats = 0; |
| 1200 | snd_mask_t format_mask; |
| 1201 | int fmt; |
| 1202 | |
| 1203 | if ((err = snd_pcm_oss_get_active_substream(pcm_oss_file, &substream)) < 0) |
| 1204 | return err; |
| 1205 | if (atomic_read(&substream->runtime->mmap_count)) { |
| 1206 | direct = 1; |
| 1207 | } else { |
| 1208 | snd_pcm_oss_setup_t *setup = substream->oss.setup; |
| 1209 | direct = (setup != NULL && setup->direct); |
| 1210 | } |
| 1211 | if (!direct) |
| 1212 | return AFMT_MU_LAW | AFMT_U8 | |
| 1213 | AFMT_S16_LE | AFMT_S16_BE | |
| 1214 | AFMT_S8 | AFMT_U16_LE | |
| 1215 | AFMT_U16_BE; |
| 1216 | params = kmalloc(sizeof(*params), GFP_KERNEL); |
| 1217 | if (!params) |
| 1218 | return -ENOMEM; |
| 1219 | _snd_pcm_hw_params_any(params); |
| 1220 | err = snd_pcm_hw_refine(substream, params); |
| 1221 | format_mask = *hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT); |
| 1222 | kfree(params); |
| 1223 | snd_assert(err >= 0, return err); |
| 1224 | for (fmt = 0; fmt < 32; ++fmt) { |
| 1225 | if (snd_mask_test(&format_mask, fmt)) { |
| 1226 | int f = snd_pcm_oss_format_to(fmt); |
| 1227 | if (f >= 0) |
| 1228 | formats |= f; |
| 1229 | } |
| 1230 | } |
| 1231 | return formats; |
| 1232 | } |
| 1233 | |
| 1234 | static int snd_pcm_oss_set_format(snd_pcm_oss_file_t *pcm_oss_file, int format) |
| 1235 | { |
| 1236 | int formats, idx; |
| 1237 | |
| 1238 | if (format != AFMT_QUERY) { |
| 1239 | formats = snd_pcm_oss_get_formats(pcm_oss_file); |
| 1240 | if (!(formats & format)) |
| 1241 | format = AFMT_U8; |
| 1242 | for (idx = 1; idx >= 0; --idx) { |
| 1243 | snd_pcm_substream_t *substream = pcm_oss_file->streams[idx]; |
| 1244 | snd_pcm_runtime_t *runtime; |
| 1245 | if (substream == NULL) |
| 1246 | continue; |
| 1247 | runtime = substream->runtime; |
| 1248 | if (runtime->oss.format != format) { |
| 1249 | runtime->oss.params = 1; |
| 1250 | runtime->oss.format = format; |
| 1251 | } |
| 1252 | } |
| 1253 | } |
| 1254 | return snd_pcm_oss_get_format(pcm_oss_file); |
| 1255 | } |
| 1256 | |
| 1257 | static int snd_pcm_oss_get_format(snd_pcm_oss_file_t *pcm_oss_file) |
| 1258 | { |
| 1259 | snd_pcm_substream_t *substream; |
| 1260 | int err; |
| 1261 | |
| 1262 | if ((err = snd_pcm_oss_get_active_substream(pcm_oss_file, &substream)) < 0) |
| 1263 | return err; |
| 1264 | return substream->runtime->oss.format; |
| 1265 | } |
| 1266 | |
| 1267 | static int snd_pcm_oss_set_subdivide1(snd_pcm_substream_t *substream, int subdivide) |
| 1268 | { |
| 1269 | snd_pcm_runtime_t *runtime; |
| 1270 | |
| 1271 | if (substream == NULL) |
| 1272 | return 0; |
| 1273 | runtime = substream->runtime; |
| 1274 | if (subdivide == 0) { |
| 1275 | subdivide = runtime->oss.subdivision; |
| 1276 | if (subdivide == 0) |
| 1277 | subdivide = 1; |
| 1278 | return subdivide; |
| 1279 | } |
| 1280 | if (runtime->oss.subdivision || runtime->oss.fragshift) |
| 1281 | return -EINVAL; |
| 1282 | if (subdivide != 1 && subdivide != 2 && subdivide != 4 && |
| 1283 | subdivide != 8 && subdivide != 16) |
| 1284 | return -EINVAL; |
| 1285 | runtime->oss.subdivision = subdivide; |
| 1286 | runtime->oss.params = 1; |
| 1287 | return subdivide; |
| 1288 | } |
| 1289 | |
| 1290 | static int snd_pcm_oss_set_subdivide(snd_pcm_oss_file_t *pcm_oss_file, int subdivide) |
| 1291 | { |
| 1292 | int err = -EINVAL, idx; |
| 1293 | |
| 1294 | for (idx = 1; idx >= 0; --idx) { |
| 1295 | snd_pcm_substream_t *substream = pcm_oss_file->streams[idx]; |
| 1296 | if (substream == NULL) |
| 1297 | continue; |
| 1298 | if ((err = snd_pcm_oss_set_subdivide1(substream, subdivide)) < 0) |
| 1299 | return err; |
| 1300 | } |
| 1301 | return err; |
| 1302 | } |
| 1303 | |
| 1304 | static int snd_pcm_oss_set_fragment1(snd_pcm_substream_t *substream, unsigned int val) |
| 1305 | { |
| 1306 | snd_pcm_runtime_t *runtime; |
| 1307 | |
| 1308 | if (substream == NULL) |
| 1309 | return 0; |
| 1310 | runtime = substream->runtime; |
| 1311 | if (runtime->oss.subdivision || runtime->oss.fragshift) |
| 1312 | return -EINVAL; |
| 1313 | runtime->oss.fragshift = val & 0xffff; |
| 1314 | runtime->oss.maxfrags = (val >> 16) & 0xffff; |
| 1315 | if (runtime->oss.fragshift < 4) /* < 16 */ |
| 1316 | runtime->oss.fragshift = 4; |
| 1317 | if (runtime->oss.maxfrags < 2) |
| 1318 | runtime->oss.maxfrags = 2; |
| 1319 | runtime->oss.params = 1; |
| 1320 | return 0; |
| 1321 | } |
| 1322 | |
| 1323 | static int snd_pcm_oss_set_fragment(snd_pcm_oss_file_t *pcm_oss_file, unsigned int val) |
| 1324 | { |
| 1325 | int err = -EINVAL, idx; |
| 1326 | |
| 1327 | for (idx = 1; idx >= 0; --idx) { |
| 1328 | snd_pcm_substream_t *substream = pcm_oss_file->streams[idx]; |
| 1329 | if (substream == NULL) |
| 1330 | continue; |
| 1331 | if ((err = snd_pcm_oss_set_fragment1(substream, val)) < 0) |
| 1332 | return err; |
| 1333 | } |
| 1334 | return err; |
| 1335 | } |
| 1336 | |
| 1337 | static int snd_pcm_oss_nonblock(struct file * file) |
| 1338 | { |
| 1339 | file->f_flags |= O_NONBLOCK; |
| 1340 | return 0; |
| 1341 | } |
| 1342 | |
| 1343 | static int snd_pcm_oss_get_caps1(snd_pcm_substream_t *substream, int res) |
| 1344 | { |
| 1345 | |
| 1346 | if (substream == NULL) { |
| 1347 | res &= ~DSP_CAP_DUPLEX; |
| 1348 | return res; |
| 1349 | } |
| 1350 | #ifdef DSP_CAP_MULTI |
| 1351 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) |
| 1352 | if (substream->pstr->substream_count > 1) |
| 1353 | res |= DSP_CAP_MULTI; |
| 1354 | #endif |
| 1355 | /* DSP_CAP_REALTIME is set all times: */ |
| 1356 | /* all ALSA drivers can return actual pointer in ring buffer */ |
| 1357 | #if defined(DSP_CAP_REALTIME) && 0 |
| 1358 | { |
| 1359 | snd_pcm_runtime_t *runtime = substream->runtime; |
| 1360 | if (runtime->info & (SNDRV_PCM_INFO_BLOCK_TRANSFER|SNDRV_PCM_INFO_BATCH)) |
| 1361 | res &= ~DSP_CAP_REALTIME; |
| 1362 | } |
| 1363 | #endif |
| 1364 | return res; |
| 1365 | } |
| 1366 | |
| 1367 | static int snd_pcm_oss_get_caps(snd_pcm_oss_file_t *pcm_oss_file) |
| 1368 | { |
| 1369 | int result, idx; |
| 1370 | |
| 1371 | result = DSP_CAP_TRIGGER | DSP_CAP_MMAP | DSP_CAP_DUPLEX | DSP_CAP_REALTIME; |
| 1372 | for (idx = 0; idx < 2; idx++) { |
| 1373 | snd_pcm_substream_t *substream = pcm_oss_file->streams[idx]; |
| 1374 | result = snd_pcm_oss_get_caps1(substream, result); |
| 1375 | } |
| 1376 | result |= 0x0001; /* revision - same as SB AWE 64 */ |
| 1377 | return result; |
| 1378 | } |
| 1379 | |
| 1380 | static void snd_pcm_oss_simulate_fill(snd_pcm_substream_t *substream, snd_pcm_uframes_t hw_ptr) |
| 1381 | { |
| 1382 | snd_pcm_runtime_t *runtime = substream->runtime; |
| 1383 | snd_pcm_uframes_t appl_ptr; |
| 1384 | appl_ptr = hw_ptr + runtime->buffer_size; |
| 1385 | appl_ptr %= runtime->boundary; |
| 1386 | runtime->control->appl_ptr = appl_ptr; |
| 1387 | } |
| 1388 | |
| 1389 | static int snd_pcm_oss_set_trigger(snd_pcm_oss_file_t *pcm_oss_file, int trigger) |
| 1390 | { |
| 1391 | snd_pcm_runtime_t *runtime; |
| 1392 | snd_pcm_substream_t *psubstream = NULL, *csubstream = NULL; |
| 1393 | int err, cmd; |
| 1394 | |
| 1395 | #ifdef OSS_DEBUG |
| 1396 | printk("pcm_oss: trigger = 0x%x\n", trigger); |
| 1397 | #endif |
| 1398 | |
| 1399 | psubstream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK]; |
| 1400 | csubstream = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE]; |
| 1401 | |
| 1402 | if (psubstream) { |
| 1403 | if ((err = snd_pcm_oss_make_ready(psubstream)) < 0) |
| 1404 | return err; |
| 1405 | } |
| 1406 | if (csubstream) { |
| 1407 | if ((err = snd_pcm_oss_make_ready(csubstream)) < 0) |
| 1408 | return err; |
| 1409 | } |
| 1410 | if (psubstream) { |
| 1411 | runtime = psubstream->runtime; |
| 1412 | if (trigger & PCM_ENABLE_OUTPUT) { |
| 1413 | if (runtime->oss.trigger) |
| 1414 | goto _skip1; |
| 1415 | if (atomic_read(&psubstream->runtime->mmap_count)) |
| 1416 | snd_pcm_oss_simulate_fill(psubstream, runtime->hw_ptr_interrupt); |
| 1417 | runtime->oss.trigger = 1; |
| 1418 | runtime->start_threshold = 1; |
| 1419 | cmd = SNDRV_PCM_IOCTL_START; |
| 1420 | } else { |
| 1421 | if (!runtime->oss.trigger) |
| 1422 | goto _skip1; |
| 1423 | runtime->oss.trigger = 0; |
| 1424 | runtime->start_threshold = runtime->boundary; |
| 1425 | cmd = SNDRV_PCM_IOCTL_DROP; |
| 1426 | runtime->oss.prepare = 1; |
| 1427 | } |
| 1428 | err = snd_pcm_kernel_playback_ioctl(psubstream, cmd, NULL); |
| 1429 | if (err < 0) |
| 1430 | return err; |
| 1431 | } |
| 1432 | _skip1: |
| 1433 | if (csubstream) { |
| 1434 | runtime = csubstream->runtime; |
| 1435 | if (trigger & PCM_ENABLE_INPUT) { |
| 1436 | if (runtime->oss.trigger) |
| 1437 | goto _skip2; |
| 1438 | runtime->oss.trigger = 1; |
| 1439 | runtime->start_threshold = 1; |
| 1440 | cmd = SNDRV_PCM_IOCTL_START; |
| 1441 | } else { |
| 1442 | if (!runtime->oss.trigger) |
| 1443 | goto _skip2; |
| 1444 | runtime->oss.trigger = 0; |
| 1445 | runtime->start_threshold = runtime->boundary; |
| 1446 | cmd = SNDRV_PCM_IOCTL_DROP; |
| 1447 | runtime->oss.prepare = 1; |
| 1448 | } |
| 1449 | err = snd_pcm_kernel_capture_ioctl(csubstream, cmd, NULL); |
| 1450 | if (err < 0) |
| 1451 | return err; |
| 1452 | } |
| 1453 | _skip2: |
| 1454 | return 0; |
| 1455 | } |
| 1456 | |
| 1457 | static int snd_pcm_oss_get_trigger(snd_pcm_oss_file_t *pcm_oss_file) |
| 1458 | { |
| 1459 | snd_pcm_substream_t *psubstream = NULL, *csubstream = NULL; |
| 1460 | int result = 0; |
| 1461 | |
| 1462 | psubstream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK]; |
| 1463 | csubstream = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE]; |
| 1464 | if (psubstream && psubstream->runtime && psubstream->runtime->oss.trigger) |
| 1465 | result |= PCM_ENABLE_OUTPUT; |
| 1466 | if (csubstream && csubstream->runtime && csubstream->runtime->oss.trigger) |
| 1467 | result |= PCM_ENABLE_INPUT; |
| 1468 | return result; |
| 1469 | } |
| 1470 | |
| 1471 | static int snd_pcm_oss_get_odelay(snd_pcm_oss_file_t *pcm_oss_file) |
| 1472 | { |
| 1473 | snd_pcm_substream_t *substream; |
| 1474 | snd_pcm_runtime_t *runtime; |
| 1475 | snd_pcm_sframes_t delay; |
| 1476 | int err; |
| 1477 | |
| 1478 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK]; |
| 1479 | if (substream == NULL) |
| 1480 | return -EINVAL; |
| 1481 | if ((err = snd_pcm_oss_make_ready(substream)) < 0) |
| 1482 | return err; |
| 1483 | runtime = substream->runtime; |
| 1484 | if (runtime->oss.params || runtime->oss.prepare) |
| 1485 | return 0; |
| 1486 | err = snd_pcm_kernel_playback_ioctl(substream, SNDRV_PCM_IOCTL_DELAY, &delay); |
| 1487 | if (err == -EPIPE) |
| 1488 | delay = 0; /* hack for broken OSS applications */ |
| 1489 | else if (err < 0) |
| 1490 | return err; |
| 1491 | return snd_pcm_oss_bytes(substream, delay); |
| 1492 | } |
| 1493 | |
| 1494 | static int snd_pcm_oss_get_ptr(snd_pcm_oss_file_t *pcm_oss_file, int stream, struct count_info __user * _info) |
| 1495 | { |
| 1496 | snd_pcm_substream_t *substream; |
| 1497 | snd_pcm_runtime_t *runtime; |
| 1498 | snd_pcm_sframes_t delay; |
| 1499 | int fixup; |
| 1500 | struct count_info info; |
| 1501 | int err; |
| 1502 | |
| 1503 | if (_info == NULL) |
| 1504 | return -EFAULT; |
| 1505 | substream = pcm_oss_file->streams[stream]; |
| 1506 | if (substream == NULL) |
| 1507 | return -EINVAL; |
| 1508 | if ((err = snd_pcm_oss_make_ready(substream)) < 0) |
| 1509 | return err; |
| 1510 | runtime = substream->runtime; |
| 1511 | if (runtime->oss.params || runtime->oss.prepare) { |
| 1512 | memset(&info, 0, sizeof(info)); |
| 1513 | if (copy_to_user(_info, &info, sizeof(info))) |
| 1514 | return -EFAULT; |
| 1515 | return 0; |
| 1516 | } |
| 1517 | if (stream == SNDRV_PCM_STREAM_PLAYBACK) { |
| 1518 | err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DELAY, &delay); |
| 1519 | if (err == -EPIPE || err == -ESTRPIPE || (! err && delay < 0)) { |
| 1520 | err = 0; |
| 1521 | delay = 0; |
| 1522 | fixup = 0; |
| 1523 | } else { |
| 1524 | fixup = runtime->oss.buffer_used; |
| 1525 | } |
| 1526 | } else { |
| 1527 | err = snd_pcm_oss_capture_position_fixup(substream, &delay); |
| 1528 | fixup = -runtime->oss.buffer_used; |
| 1529 | } |
| 1530 | if (err < 0) |
| 1531 | return err; |
| 1532 | info.ptr = snd_pcm_oss_bytes(substream, runtime->status->hw_ptr % runtime->buffer_size); |
| 1533 | if (atomic_read(&runtime->mmap_count)) { |
| 1534 | snd_pcm_sframes_t n; |
| 1535 | n = (delay = runtime->hw_ptr_interrupt) - runtime->oss.prev_hw_ptr_interrupt; |
| 1536 | if (n < 0) |
| 1537 | n += runtime->boundary; |
| 1538 | info.blocks = n / runtime->period_size; |
| 1539 | runtime->oss.prev_hw_ptr_interrupt = delay; |
| 1540 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) |
| 1541 | snd_pcm_oss_simulate_fill(substream, delay); |
| 1542 | info.bytes = snd_pcm_oss_bytes(substream, runtime->status->hw_ptr) & INT_MAX; |
| 1543 | } else { |
Jaroslav Kysela | 5ac0fab | 2005-05-31 16:59:39 +0200 | [diff] [blame] | 1544 | delay = snd_pcm_oss_bytes(substream, delay); |
Jaroslav Kysela | fb4bd0a | 2005-05-31 15:44:23 +0200 | [diff] [blame] | 1545 | if (stream == SNDRV_PCM_STREAM_PLAYBACK) { |
Takashi Iwai | 10f69f9 | 2005-09-08 13:48:34 +0200 | [diff] [blame] | 1546 | snd_pcm_oss_setup_t *setup = substream->oss.setup; |
| 1547 | if (setup && setup->buggyptr) |
| 1548 | info.blocks = (runtime->oss.buffer_bytes - delay - fixup) / runtime->oss.period_bytes; |
| 1549 | else |
| 1550 | info.blocks = (delay + fixup) / runtime->oss.period_bytes; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1551 | info.bytes = (runtime->oss.bytes - delay) & INT_MAX; |
Jaroslav Kysela | fb4bd0a | 2005-05-31 15:44:23 +0200 | [diff] [blame] | 1552 | } else { |
Jaroslav Kysela | 5ac0fab | 2005-05-31 16:59:39 +0200 | [diff] [blame] | 1553 | delay += fixup; |
| 1554 | info.blocks = delay / runtime->oss.period_bytes; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1555 | info.bytes = (runtime->oss.bytes + delay) & INT_MAX; |
Jaroslav Kysela | fb4bd0a | 2005-05-31 15:44:23 +0200 | [diff] [blame] | 1556 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1557 | } |
| 1558 | if (copy_to_user(_info, &info, sizeof(info))) |
| 1559 | return -EFAULT; |
| 1560 | return 0; |
| 1561 | } |
| 1562 | |
| 1563 | static int snd_pcm_oss_get_space(snd_pcm_oss_file_t *pcm_oss_file, int stream, struct audio_buf_info __user *_info) |
| 1564 | { |
| 1565 | snd_pcm_substream_t *substream; |
| 1566 | snd_pcm_runtime_t *runtime; |
| 1567 | snd_pcm_sframes_t avail; |
| 1568 | int fixup; |
| 1569 | struct audio_buf_info info; |
| 1570 | int err; |
| 1571 | |
| 1572 | if (_info == NULL) |
| 1573 | return -EFAULT; |
| 1574 | substream = pcm_oss_file->streams[stream]; |
| 1575 | if (substream == NULL) |
| 1576 | return -EINVAL; |
| 1577 | runtime = substream->runtime; |
| 1578 | |
| 1579 | if (runtime->oss.params && |
| 1580 | (err = snd_pcm_oss_change_params(substream)) < 0) |
| 1581 | return err; |
| 1582 | |
| 1583 | info.fragsize = runtime->oss.period_bytes; |
| 1584 | info.fragstotal = runtime->periods; |
| 1585 | if (runtime->oss.prepare) { |
| 1586 | if (stream == SNDRV_PCM_STREAM_PLAYBACK) { |
| 1587 | info.bytes = runtime->oss.period_bytes * runtime->oss.periods; |
| 1588 | info.fragments = runtime->oss.periods; |
| 1589 | } else { |
| 1590 | info.bytes = 0; |
| 1591 | info.fragments = 0; |
| 1592 | } |
| 1593 | } else { |
| 1594 | if (stream == SNDRV_PCM_STREAM_PLAYBACK) { |
| 1595 | err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DELAY, &avail); |
| 1596 | if (err == -EPIPE || err == -ESTRPIPE || (! err && avail < 0)) { |
| 1597 | avail = runtime->buffer_size; |
| 1598 | err = 0; |
| 1599 | fixup = 0; |
| 1600 | } else { |
| 1601 | avail = runtime->buffer_size - avail; |
| 1602 | fixup = -runtime->oss.buffer_used; |
| 1603 | } |
| 1604 | } else { |
| 1605 | err = snd_pcm_oss_capture_position_fixup(substream, &avail); |
| 1606 | fixup = runtime->oss.buffer_used; |
| 1607 | } |
| 1608 | if (err < 0) |
| 1609 | return err; |
| 1610 | info.bytes = snd_pcm_oss_bytes(substream, avail) + fixup; |
| 1611 | info.fragments = info.bytes / runtime->oss.period_bytes; |
| 1612 | } |
| 1613 | |
| 1614 | #ifdef OSS_DEBUG |
| 1615 | printk("pcm_oss: space: bytes = %i, fragments = %i, fragstotal = %i, fragsize = %i\n", info.bytes, info.fragments, info.fragstotal, info.fragsize); |
| 1616 | #endif |
| 1617 | if (copy_to_user(_info, &info, sizeof(info))) |
| 1618 | return -EFAULT; |
| 1619 | return 0; |
| 1620 | } |
| 1621 | |
| 1622 | static int snd_pcm_oss_get_mapbuf(snd_pcm_oss_file_t *pcm_oss_file, int stream, struct buffmem_desc __user * _info) |
| 1623 | { |
| 1624 | // it won't be probably implemented |
| 1625 | // snd_printd("TODO: snd_pcm_oss_get_mapbuf\n"); |
| 1626 | return -EINVAL; |
| 1627 | } |
| 1628 | |
| 1629 | static snd_pcm_oss_setup_t *snd_pcm_oss_look_for_setup(snd_pcm_t *pcm, int stream, const char *task_name) |
| 1630 | { |
| 1631 | const char *ptr, *ptrl; |
| 1632 | snd_pcm_oss_setup_t *setup; |
| 1633 | |
| 1634 | down(&pcm->streams[stream].oss.setup_mutex); |
| 1635 | for (setup = pcm->streams[stream].oss.setup_list; setup; setup = setup->next) { |
| 1636 | if (!strcmp(setup->task_name, task_name)) { |
| 1637 | up(&pcm->streams[stream].oss.setup_mutex); |
| 1638 | return setup; |
| 1639 | } |
| 1640 | } |
| 1641 | ptr = ptrl = task_name; |
| 1642 | while (*ptr) { |
| 1643 | if (*ptr == '/') |
| 1644 | ptrl = ptr + 1; |
| 1645 | ptr++; |
| 1646 | } |
| 1647 | if (ptrl == task_name) { |
| 1648 | goto __not_found; |
| 1649 | return NULL; |
| 1650 | } |
| 1651 | for (setup = pcm->streams[stream].oss.setup_list; setup; setup = setup->next) { |
| 1652 | if (!strcmp(setup->task_name, ptrl)) { |
| 1653 | up(&pcm->streams[stream].oss.setup_mutex); |
| 1654 | return setup; |
| 1655 | } |
| 1656 | } |
| 1657 | __not_found: |
| 1658 | up(&pcm->streams[stream].oss.setup_mutex); |
| 1659 | return NULL; |
| 1660 | } |
| 1661 | |
| 1662 | static void snd_pcm_oss_init_substream(snd_pcm_substream_t *substream, |
| 1663 | snd_pcm_oss_setup_t *setup, |
| 1664 | int minor) |
| 1665 | { |
| 1666 | snd_pcm_runtime_t *runtime; |
| 1667 | |
| 1668 | substream->oss.oss = 1; |
| 1669 | substream->oss.setup = setup; |
| 1670 | runtime = substream->runtime; |
| 1671 | runtime->oss.params = 1; |
| 1672 | runtime->oss.trigger = 1; |
| 1673 | runtime->oss.rate = 8000; |
| 1674 | switch (SNDRV_MINOR_OSS_DEVICE(minor)) { |
| 1675 | case SNDRV_MINOR_OSS_PCM_8: |
| 1676 | runtime->oss.format = AFMT_U8; |
| 1677 | break; |
| 1678 | case SNDRV_MINOR_OSS_PCM_16: |
| 1679 | runtime->oss.format = AFMT_S16_LE; |
| 1680 | break; |
| 1681 | default: |
| 1682 | runtime->oss.format = AFMT_MU_LAW; |
| 1683 | } |
| 1684 | runtime->oss.channels = 1; |
| 1685 | runtime->oss.fragshift = 0; |
| 1686 | runtime->oss.maxfrags = 0; |
| 1687 | runtime->oss.subdivision = 0; |
| 1688 | } |
| 1689 | |
| 1690 | static void snd_pcm_oss_release_substream(snd_pcm_substream_t *substream) |
| 1691 | { |
| 1692 | snd_pcm_runtime_t *runtime; |
| 1693 | runtime = substream->runtime; |
| 1694 | vfree(runtime->oss.buffer); |
| 1695 | snd_pcm_oss_plugin_clear(substream); |
| 1696 | substream->oss.file = NULL; |
| 1697 | substream->oss.oss = 0; |
| 1698 | } |
| 1699 | |
| 1700 | static int snd_pcm_oss_release_file(snd_pcm_oss_file_t *pcm_oss_file) |
| 1701 | { |
| 1702 | int cidx; |
| 1703 | snd_assert(pcm_oss_file != NULL, return -ENXIO); |
| 1704 | for (cidx = 0; cidx < 2; ++cidx) { |
| 1705 | snd_pcm_substream_t *substream = pcm_oss_file->streams[cidx]; |
| 1706 | snd_pcm_runtime_t *runtime; |
| 1707 | if (substream == NULL) |
| 1708 | continue; |
| 1709 | runtime = substream->runtime; |
| 1710 | |
| 1711 | snd_pcm_stream_lock_irq(substream); |
| 1712 | if (snd_pcm_running(substream)) |
| 1713 | snd_pcm_stop(substream, SNDRV_PCM_STATE_SETUP); |
| 1714 | snd_pcm_stream_unlock_irq(substream); |
Karsten Wiese | 443feb8 | 2005-08-10 11:18:19 +0200 | [diff] [blame] | 1715 | if (substream->ffile != NULL) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1716 | if (substream->ops->hw_free != NULL) |
| 1717 | substream->ops->hw_free(substream); |
| 1718 | substream->ops->close(substream); |
Karsten Wiese | 443feb8 | 2005-08-10 11:18:19 +0200 | [diff] [blame] | 1719 | substream->ffile = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1720 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1721 | snd_pcm_oss_release_substream(substream); |
| 1722 | snd_pcm_release_substream(substream); |
| 1723 | } |
| 1724 | kfree(pcm_oss_file); |
| 1725 | return 0; |
| 1726 | } |
| 1727 | |
| 1728 | static int snd_pcm_oss_open_file(struct file *file, |
| 1729 | snd_pcm_t *pcm, |
| 1730 | snd_pcm_oss_file_t **rpcm_oss_file, |
| 1731 | int minor, |
| 1732 | snd_pcm_oss_setup_t *psetup, |
| 1733 | snd_pcm_oss_setup_t *csetup) |
| 1734 | { |
| 1735 | int err = 0; |
| 1736 | snd_pcm_oss_file_t *pcm_oss_file; |
| 1737 | snd_pcm_substream_t *psubstream = NULL, *csubstream = NULL; |
| 1738 | unsigned int f_mode = file->f_mode; |
| 1739 | |
| 1740 | snd_assert(rpcm_oss_file != NULL, return -EINVAL); |
| 1741 | *rpcm_oss_file = NULL; |
| 1742 | |
Takashi Iwai | ca2c096 | 2005-09-09 14:20:23 +0200 | [diff] [blame] | 1743 | pcm_oss_file = kzalloc(sizeof(*pcm_oss_file), GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1744 | if (pcm_oss_file == NULL) |
| 1745 | return -ENOMEM; |
| 1746 | |
| 1747 | if ((f_mode & (FMODE_WRITE|FMODE_READ)) == (FMODE_WRITE|FMODE_READ) && |
| 1748 | (pcm->info_flags & SNDRV_PCM_INFO_HALF_DUPLEX)) |
| 1749 | f_mode = FMODE_WRITE; |
| 1750 | if ((f_mode & FMODE_WRITE) && !(psetup && psetup->disable)) { |
| 1751 | if ((err = snd_pcm_open_substream(pcm, SNDRV_PCM_STREAM_PLAYBACK, |
| 1752 | &psubstream)) < 0) { |
| 1753 | snd_pcm_oss_release_file(pcm_oss_file); |
| 1754 | return err; |
| 1755 | } |
| 1756 | pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK] = psubstream; |
| 1757 | } |
| 1758 | if ((f_mode & FMODE_READ) && !(csetup && csetup->disable)) { |
| 1759 | if ((err = snd_pcm_open_substream(pcm, SNDRV_PCM_STREAM_CAPTURE, |
| 1760 | &csubstream)) < 0) { |
| 1761 | if (!(f_mode & FMODE_WRITE) || err != -ENODEV) { |
| 1762 | snd_pcm_oss_release_file(pcm_oss_file); |
| 1763 | return err; |
| 1764 | } else { |
| 1765 | csubstream = NULL; |
| 1766 | } |
| 1767 | } |
| 1768 | pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE] = csubstream; |
| 1769 | } |
| 1770 | |
| 1771 | if (psubstream == NULL && csubstream == NULL) { |
| 1772 | snd_pcm_oss_release_file(pcm_oss_file); |
| 1773 | return -EINVAL; |
| 1774 | } |
| 1775 | if (psubstream != NULL) { |
| 1776 | psubstream->oss.file = pcm_oss_file; |
| 1777 | err = snd_pcm_hw_constraints_init(psubstream); |
| 1778 | if (err < 0) { |
| 1779 | snd_printd("snd_pcm_hw_constraint_init failed\n"); |
| 1780 | snd_pcm_oss_release_file(pcm_oss_file); |
| 1781 | return err; |
| 1782 | } |
| 1783 | if ((err = psubstream->ops->open(psubstream)) < 0) { |
| 1784 | snd_pcm_oss_release_file(pcm_oss_file); |
| 1785 | return err; |
| 1786 | } |
Karsten Wiese | 443feb8 | 2005-08-10 11:18:19 +0200 | [diff] [blame] | 1787 | psubstream->ffile = file; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1788 | err = snd_pcm_hw_constraints_complete(psubstream); |
| 1789 | if (err < 0) { |
| 1790 | snd_printd("snd_pcm_hw_constraint_complete failed\n"); |
| 1791 | snd_pcm_oss_release_file(pcm_oss_file); |
| 1792 | return err; |
| 1793 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1794 | snd_pcm_oss_init_substream(psubstream, psetup, minor); |
| 1795 | } |
| 1796 | if (csubstream != NULL) { |
| 1797 | csubstream->oss.file = pcm_oss_file; |
| 1798 | err = snd_pcm_hw_constraints_init(csubstream); |
| 1799 | if (err < 0) { |
| 1800 | snd_printd("snd_pcm_hw_constraint_init failed\n"); |
| 1801 | snd_pcm_oss_release_file(pcm_oss_file); |
| 1802 | return err; |
| 1803 | } |
| 1804 | if ((err = csubstream->ops->open(csubstream)) < 0) { |
| 1805 | snd_pcm_oss_release_file(pcm_oss_file); |
| 1806 | return err; |
| 1807 | } |
Karsten Wiese | 443feb8 | 2005-08-10 11:18:19 +0200 | [diff] [blame] | 1808 | csubstream->ffile = file; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1809 | err = snd_pcm_hw_constraints_complete(csubstream); |
| 1810 | if (err < 0) { |
| 1811 | snd_printd("snd_pcm_hw_constraint_complete failed\n"); |
| 1812 | snd_pcm_oss_release_file(pcm_oss_file); |
| 1813 | return err; |
| 1814 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1815 | snd_pcm_oss_init_substream(csubstream, csetup, minor); |
| 1816 | } |
| 1817 | |
| 1818 | file->private_data = pcm_oss_file; |
| 1819 | *rpcm_oss_file = pcm_oss_file; |
| 1820 | return 0; |
| 1821 | } |
| 1822 | |
| 1823 | |
Takashi Iwai | 93f2e37 | 2005-10-10 11:51:55 +0200 | [diff] [blame] | 1824 | static int snd_task_name(struct task_struct *task, char *name, size_t size) |
| 1825 | { |
| 1826 | unsigned int idx; |
| 1827 | |
| 1828 | snd_assert(task != NULL && name != NULL && size >= 2, return -EINVAL); |
| 1829 | for (idx = 0; idx < sizeof(task->comm) && idx + 1 < size; idx++) |
| 1830 | name[idx] = task->comm[idx]; |
| 1831 | name[idx] = '\0'; |
| 1832 | return 0; |
| 1833 | } |
| 1834 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1835 | static int snd_pcm_oss_open(struct inode *inode, struct file *file) |
| 1836 | { |
| 1837 | int minor = iminor(inode); |
| 1838 | int cardnum = SNDRV_MINOR_OSS_CARD(minor); |
| 1839 | int device; |
| 1840 | int err; |
| 1841 | char task_name[32]; |
| 1842 | snd_pcm_t *pcm; |
| 1843 | snd_pcm_oss_file_t *pcm_oss_file; |
| 1844 | snd_pcm_oss_setup_t *psetup = NULL, *csetup = NULL; |
| 1845 | int nonblock; |
| 1846 | wait_queue_t wait; |
| 1847 | |
| 1848 | snd_assert(cardnum >= 0 && cardnum < SNDRV_CARDS, return -ENXIO); |
| 1849 | device = SNDRV_MINOR_OSS_DEVICE(minor) == SNDRV_MINOR_OSS_PCM1 ? |
| 1850 | adsp_map[cardnum] : dsp_map[cardnum]; |
| 1851 | |
| 1852 | pcm = snd_pcm_devices[(cardnum * SNDRV_PCM_DEVICES) + device]; |
| 1853 | if (pcm == NULL) { |
| 1854 | err = -ENODEV; |
| 1855 | goto __error1; |
| 1856 | } |
| 1857 | err = snd_card_file_add(pcm->card, file); |
| 1858 | if (err < 0) |
| 1859 | goto __error1; |
| 1860 | if (!try_module_get(pcm->card->module)) { |
| 1861 | err = -EFAULT; |
| 1862 | goto __error2; |
| 1863 | } |
| 1864 | if (snd_task_name(current, task_name, sizeof(task_name)) < 0) { |
| 1865 | err = -EFAULT; |
| 1866 | goto __error; |
| 1867 | } |
| 1868 | if (file->f_mode & FMODE_WRITE) |
| 1869 | psetup = snd_pcm_oss_look_for_setup(pcm, SNDRV_PCM_STREAM_PLAYBACK, task_name); |
| 1870 | if (file->f_mode & FMODE_READ) |
| 1871 | csetup = snd_pcm_oss_look_for_setup(pcm, SNDRV_PCM_STREAM_CAPTURE, task_name); |
| 1872 | |
| 1873 | nonblock = !!(file->f_flags & O_NONBLOCK); |
| 1874 | if (psetup && !psetup->disable) { |
| 1875 | if (psetup->nonblock) |
| 1876 | nonblock = 1; |
| 1877 | else if (psetup->block) |
| 1878 | nonblock = 0; |
| 1879 | } else if (csetup && !csetup->disable) { |
| 1880 | if (csetup->nonblock) |
| 1881 | nonblock = 1; |
| 1882 | else if (csetup->block) |
| 1883 | nonblock = 0; |
| 1884 | } |
| 1885 | if (!nonblock) |
| 1886 | nonblock = nonblock_open; |
| 1887 | |
| 1888 | init_waitqueue_entry(&wait, current); |
| 1889 | add_wait_queue(&pcm->open_wait, &wait); |
| 1890 | down(&pcm->open_mutex); |
| 1891 | while (1) { |
| 1892 | err = snd_pcm_oss_open_file(file, pcm, &pcm_oss_file, |
| 1893 | minor, psetup, csetup); |
| 1894 | if (err >= 0) |
| 1895 | break; |
| 1896 | if (err == -EAGAIN) { |
| 1897 | if (nonblock) { |
| 1898 | err = -EBUSY; |
| 1899 | break; |
| 1900 | } |
| 1901 | } else |
| 1902 | break; |
| 1903 | set_current_state(TASK_INTERRUPTIBLE); |
| 1904 | up(&pcm->open_mutex); |
| 1905 | schedule(); |
| 1906 | down(&pcm->open_mutex); |
| 1907 | if (signal_pending(current)) { |
| 1908 | err = -ERESTARTSYS; |
| 1909 | break; |
| 1910 | } |
| 1911 | } |
| 1912 | remove_wait_queue(&pcm->open_wait, &wait); |
| 1913 | up(&pcm->open_mutex); |
| 1914 | if (err < 0) |
| 1915 | goto __error; |
| 1916 | return err; |
| 1917 | |
| 1918 | __error: |
| 1919 | module_put(pcm->card->module); |
| 1920 | __error2: |
| 1921 | snd_card_file_remove(pcm->card, file); |
| 1922 | __error1: |
| 1923 | return err; |
| 1924 | } |
| 1925 | |
| 1926 | static int snd_pcm_oss_release(struct inode *inode, struct file *file) |
| 1927 | { |
| 1928 | snd_pcm_t *pcm; |
| 1929 | snd_pcm_substream_t *substream; |
| 1930 | snd_pcm_oss_file_t *pcm_oss_file; |
| 1931 | |
| 1932 | pcm_oss_file = file->private_data; |
| 1933 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK]; |
| 1934 | if (substream == NULL) |
| 1935 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE]; |
| 1936 | snd_assert(substream != NULL, return -ENXIO); |
| 1937 | pcm = substream->pcm; |
| 1938 | snd_pcm_oss_sync(pcm_oss_file); |
| 1939 | down(&pcm->open_mutex); |
| 1940 | snd_pcm_oss_release_file(pcm_oss_file); |
| 1941 | up(&pcm->open_mutex); |
| 1942 | wake_up(&pcm->open_wait); |
| 1943 | module_put(pcm->card->module); |
| 1944 | snd_card_file_remove(pcm->card, file); |
| 1945 | return 0; |
| 1946 | } |
| 1947 | |
| 1948 | static long snd_pcm_oss_ioctl(struct file *file, unsigned int cmd, unsigned long arg) |
| 1949 | { |
| 1950 | snd_pcm_oss_file_t *pcm_oss_file; |
| 1951 | int __user *p = (int __user *)arg; |
| 1952 | int res; |
| 1953 | |
| 1954 | pcm_oss_file = file->private_data; |
| 1955 | if (cmd == OSS_GETVERSION) |
| 1956 | return put_user(SNDRV_OSS_VERSION, p); |
| 1957 | if (cmd == OSS_ALSAEMULVER) |
| 1958 | return put_user(1, p); |
| 1959 | #if defined(CONFIG_SND_MIXER_OSS) || (defined(MODULE) && defined(CONFIG_SND_MIXER_OSS_MODULE)) |
| 1960 | if (((cmd >> 8) & 0xff) == 'M') { /* mixer ioctl - for OSS compatibility */ |
| 1961 | snd_pcm_substream_t *substream; |
| 1962 | int idx; |
| 1963 | for (idx = 0; idx < 2; ++idx) { |
| 1964 | substream = pcm_oss_file->streams[idx]; |
| 1965 | if (substream != NULL) |
| 1966 | break; |
| 1967 | } |
| 1968 | snd_assert(substream != NULL, return -ENXIO); |
| 1969 | return snd_mixer_oss_ioctl_card(substream->pcm->card, cmd, arg); |
| 1970 | } |
| 1971 | #endif |
| 1972 | if (((cmd >> 8) & 0xff) != 'P') |
| 1973 | return -EINVAL; |
| 1974 | #ifdef OSS_DEBUG |
| 1975 | printk("pcm_oss: ioctl = 0x%x\n", cmd); |
| 1976 | #endif |
| 1977 | switch (cmd) { |
| 1978 | case SNDCTL_DSP_RESET: |
| 1979 | return snd_pcm_oss_reset(pcm_oss_file); |
| 1980 | case SNDCTL_DSP_SYNC: |
| 1981 | return snd_pcm_oss_sync(pcm_oss_file); |
| 1982 | case SNDCTL_DSP_SPEED: |
| 1983 | if (get_user(res, p)) |
| 1984 | return -EFAULT; |
| 1985 | if ((res = snd_pcm_oss_set_rate(pcm_oss_file, res))<0) |
| 1986 | return res; |
| 1987 | return put_user(res, p); |
| 1988 | case SOUND_PCM_READ_RATE: |
| 1989 | res = snd_pcm_oss_get_rate(pcm_oss_file); |
| 1990 | if (res < 0) |
| 1991 | return res; |
| 1992 | return put_user(res, p); |
| 1993 | case SNDCTL_DSP_STEREO: |
| 1994 | if (get_user(res, p)) |
| 1995 | return -EFAULT; |
| 1996 | res = res > 0 ? 2 : 1; |
| 1997 | if ((res = snd_pcm_oss_set_channels(pcm_oss_file, res)) < 0) |
| 1998 | return res; |
| 1999 | return put_user(--res, p); |
| 2000 | case SNDCTL_DSP_GETBLKSIZE: |
| 2001 | res = snd_pcm_oss_get_block_size(pcm_oss_file); |
| 2002 | if (res < 0) |
| 2003 | return res; |
| 2004 | return put_user(res, p); |
| 2005 | case SNDCTL_DSP_SETFMT: |
| 2006 | if (get_user(res, p)) |
| 2007 | return -EFAULT; |
| 2008 | res = snd_pcm_oss_set_format(pcm_oss_file, res); |
| 2009 | if (res < 0) |
| 2010 | return res; |
| 2011 | return put_user(res, p); |
| 2012 | case SOUND_PCM_READ_BITS: |
| 2013 | res = snd_pcm_oss_get_format(pcm_oss_file); |
| 2014 | if (res < 0) |
| 2015 | return res; |
| 2016 | return put_user(res, p); |
| 2017 | case SNDCTL_DSP_CHANNELS: |
| 2018 | if (get_user(res, p)) |
| 2019 | return -EFAULT; |
| 2020 | res = snd_pcm_oss_set_channels(pcm_oss_file, res); |
| 2021 | if (res < 0) |
| 2022 | return res; |
| 2023 | return put_user(res, p); |
| 2024 | case SOUND_PCM_READ_CHANNELS: |
| 2025 | res = snd_pcm_oss_get_channels(pcm_oss_file); |
| 2026 | if (res < 0) |
| 2027 | return res; |
| 2028 | return put_user(res, p); |
| 2029 | case SOUND_PCM_WRITE_FILTER: |
| 2030 | case SOUND_PCM_READ_FILTER: |
| 2031 | return -EIO; |
| 2032 | case SNDCTL_DSP_POST: |
| 2033 | return snd_pcm_oss_post(pcm_oss_file); |
| 2034 | case SNDCTL_DSP_SUBDIVIDE: |
| 2035 | if (get_user(res, p)) |
| 2036 | return -EFAULT; |
| 2037 | res = snd_pcm_oss_set_subdivide(pcm_oss_file, res); |
| 2038 | if (res < 0) |
| 2039 | return res; |
| 2040 | return put_user(res, p); |
| 2041 | case SNDCTL_DSP_SETFRAGMENT: |
| 2042 | if (get_user(res, p)) |
| 2043 | return -EFAULT; |
| 2044 | return snd_pcm_oss_set_fragment(pcm_oss_file, res); |
| 2045 | case SNDCTL_DSP_GETFMTS: |
| 2046 | res = snd_pcm_oss_get_formats(pcm_oss_file); |
| 2047 | if (res < 0) |
| 2048 | return res; |
| 2049 | return put_user(res, p); |
| 2050 | case SNDCTL_DSP_GETOSPACE: |
| 2051 | case SNDCTL_DSP_GETISPACE: |
| 2052 | return snd_pcm_oss_get_space(pcm_oss_file, |
| 2053 | cmd == SNDCTL_DSP_GETISPACE ? |
| 2054 | SNDRV_PCM_STREAM_CAPTURE : SNDRV_PCM_STREAM_PLAYBACK, |
| 2055 | (struct audio_buf_info __user *) arg); |
| 2056 | case SNDCTL_DSP_NONBLOCK: |
| 2057 | return snd_pcm_oss_nonblock(file); |
| 2058 | case SNDCTL_DSP_GETCAPS: |
| 2059 | res = snd_pcm_oss_get_caps(pcm_oss_file); |
| 2060 | if (res < 0) |
| 2061 | return res; |
| 2062 | return put_user(res, p); |
| 2063 | case SNDCTL_DSP_GETTRIGGER: |
| 2064 | res = snd_pcm_oss_get_trigger(pcm_oss_file); |
| 2065 | if (res < 0) |
| 2066 | return res; |
| 2067 | return put_user(res, p); |
| 2068 | case SNDCTL_DSP_SETTRIGGER: |
| 2069 | if (get_user(res, p)) |
| 2070 | return -EFAULT; |
| 2071 | return snd_pcm_oss_set_trigger(pcm_oss_file, res); |
| 2072 | case SNDCTL_DSP_GETIPTR: |
| 2073 | case SNDCTL_DSP_GETOPTR: |
| 2074 | return snd_pcm_oss_get_ptr(pcm_oss_file, |
| 2075 | cmd == SNDCTL_DSP_GETIPTR ? |
| 2076 | SNDRV_PCM_STREAM_CAPTURE : SNDRV_PCM_STREAM_PLAYBACK, |
| 2077 | (struct count_info __user *) arg); |
| 2078 | case SNDCTL_DSP_MAPINBUF: |
| 2079 | case SNDCTL_DSP_MAPOUTBUF: |
| 2080 | return snd_pcm_oss_get_mapbuf(pcm_oss_file, |
| 2081 | cmd == SNDCTL_DSP_MAPINBUF ? |
| 2082 | SNDRV_PCM_STREAM_CAPTURE : SNDRV_PCM_STREAM_PLAYBACK, |
| 2083 | (struct buffmem_desc __user *) arg); |
| 2084 | case SNDCTL_DSP_SETSYNCRO: |
| 2085 | /* stop DMA now.. */ |
| 2086 | return 0; |
| 2087 | case SNDCTL_DSP_SETDUPLEX: |
| 2088 | if (snd_pcm_oss_get_caps(pcm_oss_file) & DSP_CAP_DUPLEX) |
| 2089 | return 0; |
| 2090 | return -EIO; |
| 2091 | case SNDCTL_DSP_GETODELAY: |
| 2092 | res = snd_pcm_oss_get_odelay(pcm_oss_file); |
| 2093 | if (res < 0) { |
| 2094 | /* it's for sure, some broken apps don't check for error codes */ |
| 2095 | put_user(0, p); |
| 2096 | return res; |
| 2097 | } |
| 2098 | return put_user(res, p); |
| 2099 | case SNDCTL_DSP_PROFILE: |
| 2100 | return 0; /* silently ignore */ |
| 2101 | default: |
| 2102 | snd_printd("pcm_oss: unknown command = 0x%x\n", cmd); |
| 2103 | } |
| 2104 | return -EINVAL; |
| 2105 | } |
| 2106 | |
| 2107 | #ifdef CONFIG_COMPAT |
| 2108 | /* all compatible */ |
| 2109 | #define snd_pcm_oss_ioctl_compat snd_pcm_oss_ioctl |
| 2110 | #else |
| 2111 | #define snd_pcm_oss_ioctl_compat NULL |
| 2112 | #endif |
| 2113 | |
| 2114 | static ssize_t snd_pcm_oss_read(struct file *file, char __user *buf, size_t count, loff_t *offset) |
| 2115 | { |
| 2116 | snd_pcm_oss_file_t *pcm_oss_file; |
| 2117 | snd_pcm_substream_t *substream; |
| 2118 | |
| 2119 | pcm_oss_file = file->private_data; |
| 2120 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE]; |
| 2121 | if (substream == NULL) |
| 2122 | return -ENXIO; |
| 2123 | #ifndef OSS_DEBUG |
| 2124 | return snd_pcm_oss_read1(substream, buf, count); |
| 2125 | #else |
| 2126 | { |
| 2127 | ssize_t res = snd_pcm_oss_read1(substream, buf, count); |
| 2128 | printk("pcm_oss: read %li bytes (returned %li bytes)\n", (long)count, (long)res); |
| 2129 | return res; |
| 2130 | } |
| 2131 | #endif |
| 2132 | } |
| 2133 | |
| 2134 | static ssize_t snd_pcm_oss_write(struct file *file, const char __user *buf, size_t count, loff_t *offset) |
| 2135 | { |
| 2136 | snd_pcm_oss_file_t *pcm_oss_file; |
| 2137 | snd_pcm_substream_t *substream; |
| 2138 | long result; |
| 2139 | |
| 2140 | pcm_oss_file = file->private_data; |
| 2141 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK]; |
| 2142 | if (substream == NULL) |
| 2143 | return -ENXIO; |
| 2144 | up(&file->f_dentry->d_inode->i_sem); |
| 2145 | result = snd_pcm_oss_write1(substream, buf, count); |
| 2146 | down(&file->f_dentry->d_inode->i_sem); |
| 2147 | #ifdef OSS_DEBUG |
| 2148 | printk("pcm_oss: write %li bytes (wrote %li bytes)\n", (long)count, (long)result); |
| 2149 | #endif |
| 2150 | return result; |
| 2151 | } |
| 2152 | |
| 2153 | static int snd_pcm_oss_playback_ready(snd_pcm_substream_t *substream) |
| 2154 | { |
| 2155 | snd_pcm_runtime_t *runtime = substream->runtime; |
| 2156 | if (atomic_read(&runtime->mmap_count)) |
| 2157 | return runtime->oss.prev_hw_ptr_interrupt != runtime->hw_ptr_interrupt; |
| 2158 | else |
| 2159 | return snd_pcm_playback_avail(runtime) >= runtime->oss.period_frames; |
| 2160 | } |
| 2161 | |
| 2162 | static int snd_pcm_oss_capture_ready(snd_pcm_substream_t *substream) |
| 2163 | { |
| 2164 | snd_pcm_runtime_t *runtime = substream->runtime; |
| 2165 | if (atomic_read(&runtime->mmap_count)) |
| 2166 | return runtime->oss.prev_hw_ptr_interrupt != runtime->hw_ptr_interrupt; |
| 2167 | else |
| 2168 | return snd_pcm_capture_avail(runtime) >= runtime->oss.period_frames; |
| 2169 | } |
| 2170 | |
| 2171 | static unsigned int snd_pcm_oss_poll(struct file *file, poll_table * wait) |
| 2172 | { |
| 2173 | snd_pcm_oss_file_t *pcm_oss_file; |
| 2174 | unsigned int mask; |
| 2175 | snd_pcm_substream_t *psubstream = NULL, *csubstream = NULL; |
| 2176 | |
| 2177 | pcm_oss_file = file->private_data; |
| 2178 | |
| 2179 | psubstream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK]; |
| 2180 | csubstream = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE]; |
| 2181 | |
| 2182 | mask = 0; |
| 2183 | if (psubstream != NULL) { |
| 2184 | snd_pcm_runtime_t *runtime = psubstream->runtime; |
| 2185 | poll_wait(file, &runtime->sleep, wait); |
| 2186 | snd_pcm_stream_lock_irq(psubstream); |
| 2187 | if (runtime->status->state != SNDRV_PCM_STATE_DRAINING && |
| 2188 | (runtime->status->state != SNDRV_PCM_STATE_RUNNING || |
| 2189 | snd_pcm_oss_playback_ready(psubstream))) |
| 2190 | mask |= POLLOUT | POLLWRNORM; |
| 2191 | snd_pcm_stream_unlock_irq(psubstream); |
| 2192 | } |
| 2193 | if (csubstream != NULL) { |
| 2194 | snd_pcm_runtime_t *runtime = csubstream->runtime; |
| 2195 | enum sndrv_pcm_state ostate; |
| 2196 | poll_wait(file, &runtime->sleep, wait); |
| 2197 | snd_pcm_stream_lock_irq(csubstream); |
| 2198 | if ((ostate = runtime->status->state) != SNDRV_PCM_STATE_RUNNING || |
| 2199 | snd_pcm_oss_capture_ready(csubstream)) |
| 2200 | mask |= POLLIN | POLLRDNORM; |
| 2201 | snd_pcm_stream_unlock_irq(csubstream); |
| 2202 | if (ostate != SNDRV_PCM_STATE_RUNNING && runtime->oss.trigger) { |
| 2203 | snd_pcm_oss_file_t ofile; |
| 2204 | memset(&ofile, 0, sizeof(ofile)); |
| 2205 | ofile.streams[SNDRV_PCM_STREAM_CAPTURE] = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE]; |
| 2206 | runtime->oss.trigger = 0; |
| 2207 | snd_pcm_oss_set_trigger(&ofile, PCM_ENABLE_INPUT); |
| 2208 | } |
| 2209 | } |
| 2210 | |
| 2211 | return mask; |
| 2212 | } |
| 2213 | |
| 2214 | static int snd_pcm_oss_mmap(struct file *file, struct vm_area_struct *area) |
| 2215 | { |
| 2216 | snd_pcm_oss_file_t *pcm_oss_file; |
| 2217 | snd_pcm_substream_t *substream = NULL; |
| 2218 | snd_pcm_runtime_t *runtime; |
| 2219 | int err; |
| 2220 | |
| 2221 | #ifdef OSS_DEBUG |
| 2222 | printk("pcm_oss: mmap begin\n"); |
| 2223 | #endif |
| 2224 | pcm_oss_file = file->private_data; |
| 2225 | switch ((area->vm_flags & (VM_READ | VM_WRITE))) { |
| 2226 | case VM_READ | VM_WRITE: |
| 2227 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK]; |
| 2228 | if (substream) |
| 2229 | break; |
| 2230 | /* Fall through */ |
| 2231 | case VM_READ: |
| 2232 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE]; |
| 2233 | break; |
| 2234 | case VM_WRITE: |
| 2235 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK]; |
| 2236 | break; |
| 2237 | default: |
| 2238 | return -EINVAL; |
| 2239 | } |
| 2240 | /* set VM_READ access as well to fix memset() routines that do |
| 2241 | reads before writes (to improve performance) */ |
| 2242 | area->vm_flags |= VM_READ; |
| 2243 | if (substream == NULL) |
| 2244 | return -ENXIO; |
| 2245 | runtime = substream->runtime; |
| 2246 | if (!(runtime->info & SNDRV_PCM_INFO_MMAP_VALID)) |
| 2247 | return -EIO; |
| 2248 | if (runtime->info & SNDRV_PCM_INFO_INTERLEAVED) |
| 2249 | runtime->access = SNDRV_PCM_ACCESS_MMAP_INTERLEAVED; |
| 2250 | else |
| 2251 | return -EIO; |
| 2252 | |
| 2253 | if (runtime->oss.params) { |
| 2254 | if ((err = snd_pcm_oss_change_params(substream)) < 0) |
| 2255 | return err; |
| 2256 | } |
| 2257 | if (runtime->oss.plugin_first != NULL) |
| 2258 | return -EIO; |
| 2259 | |
| 2260 | if (area->vm_pgoff != 0) |
| 2261 | return -EINVAL; |
| 2262 | |
| 2263 | err = snd_pcm_mmap_data(substream, file, area); |
| 2264 | if (err < 0) |
| 2265 | return err; |
| 2266 | runtime->oss.mmap_bytes = area->vm_end - area->vm_start; |
| 2267 | runtime->silence_threshold = 0; |
| 2268 | runtime->silence_size = 0; |
| 2269 | #ifdef OSS_DEBUG |
| 2270 | printk("pcm_oss: mmap ok, bytes = 0x%x\n", runtime->oss.mmap_bytes); |
| 2271 | #endif |
| 2272 | /* In mmap mode we never stop */ |
| 2273 | runtime->stop_threshold = runtime->boundary; |
| 2274 | |
| 2275 | return 0; |
| 2276 | } |
| 2277 | |
| 2278 | /* |
| 2279 | * /proc interface |
| 2280 | */ |
| 2281 | |
| 2282 | static void snd_pcm_oss_proc_read(snd_info_entry_t *entry, |
| 2283 | snd_info_buffer_t * buffer) |
| 2284 | { |
| 2285 | snd_pcm_str_t *pstr = (snd_pcm_str_t *)entry->private_data; |
| 2286 | snd_pcm_oss_setup_t *setup = pstr->oss.setup_list; |
| 2287 | down(&pstr->oss.setup_mutex); |
| 2288 | while (setup) { |
| 2289 | snd_iprintf(buffer, "%s %u %u%s%s%s%s%s%s\n", |
| 2290 | setup->task_name, |
| 2291 | setup->periods, |
| 2292 | setup->period_size, |
| 2293 | setup->disable ? " disable" : "", |
| 2294 | setup->direct ? " direct" : "", |
| 2295 | setup->block ? " block" : "", |
| 2296 | setup->nonblock ? " non-block" : "", |
| 2297 | setup->partialfrag ? " partial-frag" : "", |
| 2298 | setup->nosilence ? " no-silence" : ""); |
| 2299 | setup = setup->next; |
| 2300 | } |
| 2301 | up(&pstr->oss.setup_mutex); |
| 2302 | } |
| 2303 | |
| 2304 | static void snd_pcm_oss_proc_free_setup_list(snd_pcm_str_t * pstr) |
| 2305 | { |
| 2306 | unsigned int idx; |
| 2307 | snd_pcm_substream_t *substream; |
| 2308 | snd_pcm_oss_setup_t *setup, *setupn; |
| 2309 | |
| 2310 | for (idx = 0, substream = pstr->substream; |
| 2311 | idx < pstr->substream_count; idx++, substream = substream->next) |
| 2312 | substream->oss.setup = NULL; |
| 2313 | for (setup = pstr->oss.setup_list, pstr->oss.setup_list = NULL; |
| 2314 | setup; setup = setupn) { |
| 2315 | setupn = setup->next; |
| 2316 | kfree(setup->task_name); |
| 2317 | kfree(setup); |
| 2318 | } |
| 2319 | pstr->oss.setup_list = NULL; |
| 2320 | } |
| 2321 | |
| 2322 | static void snd_pcm_oss_proc_write(snd_info_entry_t *entry, |
| 2323 | snd_info_buffer_t * buffer) |
| 2324 | { |
| 2325 | snd_pcm_str_t *pstr = (snd_pcm_str_t *)entry->private_data; |
| 2326 | char line[128], str[32], task_name[32], *ptr; |
| 2327 | int idx1; |
| 2328 | snd_pcm_oss_setup_t *setup, *setup1, template; |
| 2329 | |
| 2330 | while (!snd_info_get_line(buffer, line, sizeof(line))) { |
| 2331 | down(&pstr->oss.setup_mutex); |
| 2332 | memset(&template, 0, sizeof(template)); |
| 2333 | ptr = snd_info_get_str(task_name, line, sizeof(task_name)); |
| 2334 | if (!strcmp(task_name, "clear") || !strcmp(task_name, "erase")) { |
| 2335 | snd_pcm_oss_proc_free_setup_list(pstr); |
| 2336 | up(&pstr->oss.setup_mutex); |
| 2337 | continue; |
| 2338 | } |
| 2339 | for (setup = pstr->oss.setup_list; setup; setup = setup->next) { |
| 2340 | if (!strcmp(setup->task_name, task_name)) { |
| 2341 | template = *setup; |
| 2342 | break; |
| 2343 | } |
| 2344 | } |
| 2345 | ptr = snd_info_get_str(str, ptr, sizeof(str)); |
| 2346 | template.periods = simple_strtoul(str, NULL, 10); |
| 2347 | ptr = snd_info_get_str(str, ptr, sizeof(str)); |
| 2348 | template.period_size = simple_strtoul(str, NULL, 10); |
| 2349 | for (idx1 = 31; idx1 >= 0; idx1--) |
| 2350 | if (template.period_size & (1 << idx1)) |
| 2351 | break; |
| 2352 | for (idx1--; idx1 >= 0; idx1--) |
| 2353 | template.period_size &= ~(1 << idx1); |
| 2354 | do { |
| 2355 | ptr = snd_info_get_str(str, ptr, sizeof(str)); |
| 2356 | if (!strcmp(str, "disable")) { |
| 2357 | template.disable = 1; |
| 2358 | } else if (!strcmp(str, "direct")) { |
| 2359 | template.direct = 1; |
| 2360 | } else if (!strcmp(str, "block")) { |
| 2361 | template.block = 1; |
| 2362 | } else if (!strcmp(str, "non-block")) { |
| 2363 | template.nonblock = 1; |
| 2364 | } else if (!strcmp(str, "partial-frag")) { |
| 2365 | template.partialfrag = 1; |
| 2366 | } else if (!strcmp(str, "no-silence")) { |
| 2367 | template.nosilence = 1; |
Takashi Iwai | 10f69f9 | 2005-09-08 13:48:34 +0200 | [diff] [blame] | 2368 | } else if (!strcmp(str, "buggy-ptr")) { |
| 2369 | template.buggyptr = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2370 | } |
| 2371 | } while (*str); |
| 2372 | if (setup == NULL) { |
| 2373 | setup = (snd_pcm_oss_setup_t *) kmalloc(sizeof(snd_pcm_oss_setup_t), GFP_KERNEL); |
| 2374 | if (setup) { |
| 2375 | if (pstr->oss.setup_list == NULL) { |
| 2376 | pstr->oss.setup_list = setup; |
| 2377 | } else { |
| 2378 | for (setup1 = pstr->oss.setup_list; setup1->next; setup1 = setup1->next); |
| 2379 | setup1->next = setup; |
| 2380 | } |
Paulo Marques | 543537b | 2005-06-23 00:09:02 -0700 | [diff] [blame] | 2381 | template.task_name = kstrdup(task_name, GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2382 | } else { |
| 2383 | buffer->error = -ENOMEM; |
| 2384 | } |
| 2385 | } |
| 2386 | if (setup) |
| 2387 | *setup = template; |
| 2388 | up(&pstr->oss.setup_mutex); |
| 2389 | } |
| 2390 | } |
| 2391 | |
| 2392 | static void snd_pcm_oss_proc_init(snd_pcm_t *pcm) |
| 2393 | { |
| 2394 | int stream; |
| 2395 | for (stream = 0; stream < 2; ++stream) { |
| 2396 | snd_info_entry_t *entry; |
| 2397 | snd_pcm_str_t *pstr = &pcm->streams[stream]; |
| 2398 | if (pstr->substream_count == 0) |
| 2399 | continue; |
| 2400 | if ((entry = snd_info_create_card_entry(pcm->card, "oss", pstr->proc_root)) != NULL) { |
| 2401 | entry->content = SNDRV_INFO_CONTENT_TEXT; |
| 2402 | entry->mode = S_IFREG | S_IRUGO | S_IWUSR; |
| 2403 | entry->c.text.read_size = 8192; |
| 2404 | entry->c.text.read = snd_pcm_oss_proc_read; |
| 2405 | entry->c.text.write_size = 8192; |
| 2406 | entry->c.text.write = snd_pcm_oss_proc_write; |
| 2407 | entry->private_data = pstr; |
| 2408 | if (snd_info_register(entry) < 0) { |
| 2409 | snd_info_free_entry(entry); |
| 2410 | entry = NULL; |
| 2411 | } |
| 2412 | } |
| 2413 | pstr->oss.proc_entry = entry; |
| 2414 | } |
| 2415 | } |
| 2416 | |
| 2417 | static void snd_pcm_oss_proc_done(snd_pcm_t *pcm) |
| 2418 | { |
| 2419 | int stream; |
| 2420 | for (stream = 0; stream < 2; ++stream) { |
| 2421 | snd_pcm_str_t *pstr = &pcm->streams[stream]; |
| 2422 | if (pstr->oss.proc_entry) { |
| 2423 | snd_info_unregister(pstr->oss.proc_entry); |
| 2424 | pstr->oss.proc_entry = NULL; |
| 2425 | snd_pcm_oss_proc_free_setup_list(pstr); |
| 2426 | } |
| 2427 | } |
| 2428 | } |
| 2429 | |
| 2430 | /* |
| 2431 | * ENTRY functions |
| 2432 | */ |
| 2433 | |
| 2434 | static struct file_operations snd_pcm_oss_f_reg = |
| 2435 | { |
| 2436 | .owner = THIS_MODULE, |
| 2437 | .read = snd_pcm_oss_read, |
| 2438 | .write = snd_pcm_oss_write, |
| 2439 | .open = snd_pcm_oss_open, |
| 2440 | .release = snd_pcm_oss_release, |
| 2441 | .poll = snd_pcm_oss_poll, |
| 2442 | .unlocked_ioctl = snd_pcm_oss_ioctl, |
| 2443 | .compat_ioctl = snd_pcm_oss_ioctl_compat, |
| 2444 | .mmap = snd_pcm_oss_mmap, |
| 2445 | }; |
| 2446 | |
| 2447 | static snd_minor_t snd_pcm_oss_reg = |
| 2448 | { |
| 2449 | .comment = "digital audio", |
| 2450 | .f_ops = &snd_pcm_oss_f_reg, |
| 2451 | }; |
| 2452 | |
| 2453 | static void register_oss_dsp(snd_pcm_t *pcm, int index) |
| 2454 | { |
| 2455 | char name[128]; |
| 2456 | sprintf(name, "dsp%i%i", pcm->card->number, pcm->device); |
| 2457 | if (snd_register_oss_device(SNDRV_OSS_DEVICE_TYPE_PCM, |
| 2458 | pcm->card, index, &snd_pcm_oss_reg, |
| 2459 | name) < 0) { |
Takashi Iwai | d3d579f | 2005-10-21 16:20:11 +0200 | [diff] [blame] | 2460 | snd_printk(KERN_ERR "unable to register OSS PCM device %i:%i\n", |
| 2461 | pcm->card->number, pcm->device); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2462 | } |
| 2463 | } |
| 2464 | |
| 2465 | static int snd_pcm_oss_register_minor(snd_pcm_t * pcm) |
| 2466 | { |
| 2467 | pcm->oss.reg = 0; |
| 2468 | if (dsp_map[pcm->card->number] == (int)pcm->device) { |
| 2469 | char name[128]; |
| 2470 | int duplex; |
| 2471 | register_oss_dsp(pcm, 0); |
| 2472 | duplex = (pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream_count > 0 && |
| 2473 | pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream_count && |
| 2474 | !(pcm->info_flags & SNDRV_PCM_INFO_HALF_DUPLEX)); |
| 2475 | sprintf(name, "%s%s", pcm->name, duplex ? " (DUPLEX)" : ""); |
| 2476 | #ifdef SNDRV_OSS_INFO_DEV_AUDIO |
| 2477 | snd_oss_info_register(SNDRV_OSS_INFO_DEV_AUDIO, |
| 2478 | pcm->card->number, |
| 2479 | name); |
| 2480 | #endif |
| 2481 | pcm->oss.reg++; |
| 2482 | pcm->oss.reg_mask |= 1; |
| 2483 | } |
| 2484 | if (adsp_map[pcm->card->number] == (int)pcm->device) { |
| 2485 | register_oss_dsp(pcm, 1); |
| 2486 | pcm->oss.reg++; |
| 2487 | pcm->oss.reg_mask |= 2; |
| 2488 | } |
| 2489 | |
| 2490 | if (pcm->oss.reg) |
| 2491 | snd_pcm_oss_proc_init(pcm); |
| 2492 | |
| 2493 | return 0; |
| 2494 | } |
| 2495 | |
| 2496 | static int snd_pcm_oss_disconnect_minor(snd_pcm_t * pcm) |
| 2497 | { |
| 2498 | if (pcm->oss.reg) { |
| 2499 | if (pcm->oss.reg_mask & 1) { |
| 2500 | pcm->oss.reg_mask &= ~1; |
| 2501 | snd_unregister_oss_device(SNDRV_OSS_DEVICE_TYPE_PCM, |
| 2502 | pcm->card, 0); |
| 2503 | } |
| 2504 | if (pcm->oss.reg_mask & 2) { |
| 2505 | pcm->oss.reg_mask &= ~2; |
| 2506 | snd_unregister_oss_device(SNDRV_OSS_DEVICE_TYPE_PCM, |
| 2507 | pcm->card, 1); |
| 2508 | } |
| 2509 | } |
| 2510 | return 0; |
| 2511 | } |
| 2512 | |
| 2513 | static int snd_pcm_oss_unregister_minor(snd_pcm_t * pcm) |
| 2514 | { |
| 2515 | snd_pcm_oss_disconnect_minor(pcm); |
| 2516 | if (pcm->oss.reg) { |
| 2517 | if (dsp_map[pcm->card->number] == (int)pcm->device) { |
| 2518 | #ifdef SNDRV_OSS_INFO_DEV_AUDIO |
| 2519 | snd_oss_info_unregister(SNDRV_OSS_INFO_DEV_AUDIO, pcm->card->number); |
| 2520 | #endif |
| 2521 | } |
| 2522 | pcm->oss.reg = 0; |
| 2523 | snd_pcm_oss_proc_done(pcm); |
| 2524 | } |
| 2525 | return 0; |
| 2526 | } |
| 2527 | |
| 2528 | static snd_pcm_notify_t snd_pcm_oss_notify = |
| 2529 | { |
| 2530 | .n_register = snd_pcm_oss_register_minor, |
| 2531 | .n_disconnect = snd_pcm_oss_disconnect_minor, |
| 2532 | .n_unregister = snd_pcm_oss_unregister_minor, |
| 2533 | }; |
| 2534 | |
| 2535 | static int __init alsa_pcm_oss_init(void) |
| 2536 | { |
| 2537 | int i; |
| 2538 | int err; |
| 2539 | |
| 2540 | /* check device map table */ |
| 2541 | for (i = 0; i < SNDRV_CARDS; i++) { |
| 2542 | if (dsp_map[i] < 0 || dsp_map[i] >= SNDRV_PCM_DEVICES) { |
Takashi Iwai | d3d579f | 2005-10-21 16:20:11 +0200 | [diff] [blame] | 2543 | snd_printk(KERN_ERR "invalid dsp_map[%d] = %d\n", |
| 2544 | i, dsp_map[i]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2545 | dsp_map[i] = 0; |
| 2546 | } |
| 2547 | if (adsp_map[i] < 0 || adsp_map[i] >= SNDRV_PCM_DEVICES) { |
Takashi Iwai | d3d579f | 2005-10-21 16:20:11 +0200 | [diff] [blame] | 2548 | snd_printk(KERN_ERR "invalid adsp_map[%d] = %d\n", |
| 2549 | i, adsp_map[i]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2550 | adsp_map[i] = 1; |
| 2551 | } |
| 2552 | } |
| 2553 | if ((err = snd_pcm_notify(&snd_pcm_oss_notify, 0)) < 0) |
| 2554 | return err; |
| 2555 | return 0; |
| 2556 | } |
| 2557 | |
| 2558 | static void __exit alsa_pcm_oss_exit(void) |
| 2559 | { |
| 2560 | snd_pcm_notify(&snd_pcm_oss_notify, 1); |
| 2561 | } |
| 2562 | |
| 2563 | module_init(alsa_pcm_oss_init) |
| 2564 | module_exit(alsa_pcm_oss_exit) |