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 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 64 | extern int snd_mixer_oss_ioctl_card(struct snd_card *card, unsigned int cmd, unsigned long arg); |
| 65 | static int snd_pcm_oss_get_rate(struct snd_pcm_oss_file *pcm_oss_file); |
| 66 | static int snd_pcm_oss_get_channels(struct snd_pcm_oss_file *pcm_oss_file); |
| 67 | static int snd_pcm_oss_get_format(struct snd_pcm_oss_file *pcm_oss_file); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 68 | |
| 69 | static inline mm_segment_t snd_enter_user(void) |
| 70 | { |
| 71 | mm_segment_t fs = get_fs(); |
| 72 | set_fs(get_ds()); |
| 73 | return fs; |
| 74 | } |
| 75 | |
| 76 | static inline void snd_leave_user(mm_segment_t fs) |
| 77 | { |
| 78 | set_fs(fs); |
| 79 | } |
| 80 | |
Jaroslav Kysela | 21a3479 | 2006-01-13 09:12:11 +0100 | [diff] [blame] | 81 | #ifdef CONFIG_SND_PCM_OSS_PLUGINS |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 82 | static int snd_pcm_oss_plugin_clear(struct snd_pcm_substream *substream) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 83 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 84 | struct snd_pcm_runtime *runtime = substream->runtime; |
| 85 | struct snd_pcm_plugin *plugin, *next; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 86 | |
| 87 | plugin = runtime->oss.plugin_first; |
| 88 | while (plugin) { |
| 89 | next = plugin->next; |
| 90 | snd_pcm_plugin_free(plugin); |
| 91 | plugin = next; |
| 92 | } |
| 93 | runtime->oss.plugin_first = runtime->oss.plugin_last = NULL; |
| 94 | return 0; |
| 95 | } |
| 96 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 97 | static int snd_pcm_plugin_insert(struct snd_pcm_plugin *plugin) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 98 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 99 | struct snd_pcm_runtime *runtime = plugin->plug->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 100 | plugin->next = runtime->oss.plugin_first; |
| 101 | plugin->prev = NULL; |
| 102 | if (runtime->oss.plugin_first) { |
| 103 | runtime->oss.plugin_first->prev = plugin; |
| 104 | runtime->oss.plugin_first = plugin; |
| 105 | } else { |
| 106 | runtime->oss.plugin_last = |
| 107 | runtime->oss.plugin_first = plugin; |
| 108 | } |
| 109 | return 0; |
| 110 | } |
| 111 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 112 | int snd_pcm_plugin_append(struct snd_pcm_plugin *plugin) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 113 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 114 | struct snd_pcm_runtime *runtime = plugin->plug->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 115 | plugin->next = NULL; |
| 116 | plugin->prev = runtime->oss.plugin_last; |
| 117 | if (runtime->oss.plugin_last) { |
| 118 | runtime->oss.plugin_last->next = plugin; |
| 119 | runtime->oss.plugin_last = plugin; |
| 120 | } else { |
| 121 | runtime->oss.plugin_last = |
| 122 | runtime->oss.plugin_first = plugin; |
| 123 | } |
| 124 | return 0; |
| 125 | } |
Jaroslav Kysela | 21a3479 | 2006-01-13 09:12:11 +0100 | [diff] [blame] | 126 | #endif /* CONFIG_SND_PCM_OSS_PLUGINS */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 127 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 128 | static long snd_pcm_oss_bytes(struct snd_pcm_substream *substream, long frames) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 129 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 130 | struct snd_pcm_runtime *runtime = substream->runtime; |
Jaroslav Kysela | af08161 | 2005-05-27 11:15:20 +0200 | [diff] [blame] | 131 | long buffer_size = snd_pcm_lib_buffer_bytes(substream); |
Jaroslav Kysela | bfc5bdd | 2005-05-27 11:12:35 +0200 | [diff] [blame] | 132 | long bytes = frames_to_bytes(runtime, frames); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 133 | if (buffer_size == runtime->oss.buffer_bytes) |
Jaroslav Kysela | bfc5bdd | 2005-05-27 11:12:35 +0200 | [diff] [blame] | 134 | return bytes; |
Takashi Iwai | cdc5c53f | 2005-05-27 12:40:52 +0200 | [diff] [blame] | 135 | #if BITS_PER_LONG >= 64 |
| 136 | return runtime->oss.buffer_bytes * bytes / buffer_size; |
| 137 | #else |
| 138 | { |
| 139 | u64 bsize = (u64)runtime->oss.buffer_bytes * (u64)bytes; |
| 140 | u32 rem; |
| 141 | div64_32(&bsize, buffer_size, &rem); |
| 142 | return (long)bsize; |
| 143 | } |
| 144 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 145 | } |
| 146 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 147 | static long snd_pcm_alsa_frames(struct snd_pcm_substream *substream, long bytes) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 148 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 149 | struct snd_pcm_runtime *runtime = substream->runtime; |
Jaroslav Kysela | af08161 | 2005-05-27 11:15:20 +0200 | [diff] [blame] | 150 | long buffer_size = snd_pcm_lib_buffer_bytes(substream); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 151 | if (buffer_size == runtime->oss.buffer_bytes) |
| 152 | return bytes_to_frames(runtime, bytes); |
| 153 | return bytes_to_frames(runtime, (buffer_size * bytes) / runtime->oss.buffer_bytes); |
| 154 | } |
| 155 | |
| 156 | static int snd_pcm_oss_format_from(int format) |
| 157 | { |
| 158 | switch (format) { |
| 159 | case AFMT_MU_LAW: return SNDRV_PCM_FORMAT_MU_LAW; |
| 160 | case AFMT_A_LAW: return SNDRV_PCM_FORMAT_A_LAW; |
| 161 | case AFMT_IMA_ADPCM: return SNDRV_PCM_FORMAT_IMA_ADPCM; |
| 162 | case AFMT_U8: return SNDRV_PCM_FORMAT_U8; |
| 163 | case AFMT_S16_LE: return SNDRV_PCM_FORMAT_S16_LE; |
| 164 | case AFMT_S16_BE: return SNDRV_PCM_FORMAT_S16_BE; |
| 165 | case AFMT_S8: return SNDRV_PCM_FORMAT_S8; |
| 166 | case AFMT_U16_LE: return SNDRV_PCM_FORMAT_U16_LE; |
| 167 | case AFMT_U16_BE: return SNDRV_PCM_FORMAT_U16_BE; |
| 168 | case AFMT_MPEG: return SNDRV_PCM_FORMAT_MPEG; |
| 169 | default: return SNDRV_PCM_FORMAT_U8; |
| 170 | } |
| 171 | } |
| 172 | |
| 173 | static int snd_pcm_oss_format_to(int format) |
| 174 | { |
| 175 | switch (format) { |
| 176 | case SNDRV_PCM_FORMAT_MU_LAW: return AFMT_MU_LAW; |
| 177 | case SNDRV_PCM_FORMAT_A_LAW: return AFMT_A_LAW; |
| 178 | case SNDRV_PCM_FORMAT_IMA_ADPCM: return AFMT_IMA_ADPCM; |
| 179 | case SNDRV_PCM_FORMAT_U8: return AFMT_U8; |
| 180 | case SNDRV_PCM_FORMAT_S16_LE: return AFMT_S16_LE; |
| 181 | case SNDRV_PCM_FORMAT_S16_BE: return AFMT_S16_BE; |
| 182 | case SNDRV_PCM_FORMAT_S8: return AFMT_S8; |
| 183 | case SNDRV_PCM_FORMAT_U16_LE: return AFMT_U16_LE; |
| 184 | case SNDRV_PCM_FORMAT_U16_BE: return AFMT_U16_BE; |
| 185 | case SNDRV_PCM_FORMAT_MPEG: return AFMT_MPEG; |
| 186 | default: return -EINVAL; |
| 187 | } |
| 188 | } |
| 189 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 190 | static int snd_pcm_oss_period_size(struct snd_pcm_substream *substream, |
| 191 | struct snd_pcm_hw_params *oss_params, |
| 192 | struct snd_pcm_hw_params *slave_params) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 193 | { |
| 194 | size_t s; |
| 195 | size_t oss_buffer_size, oss_period_size, oss_periods; |
| 196 | size_t min_period_size, max_period_size; |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 197 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 198 | size_t oss_frame_size; |
| 199 | |
| 200 | oss_frame_size = snd_pcm_format_physical_width(params_format(oss_params)) * |
| 201 | params_channels(oss_params) / 8; |
| 202 | |
| 203 | oss_buffer_size = snd_pcm_plug_client_size(substream, |
| 204 | snd_pcm_hw_param_value_max(slave_params, SNDRV_PCM_HW_PARAM_BUFFER_SIZE, NULL)) * oss_frame_size; |
| 205 | oss_buffer_size = 1 << ld2(oss_buffer_size); |
| 206 | if (atomic_read(&runtime->mmap_count)) { |
| 207 | if (oss_buffer_size > runtime->oss.mmap_bytes) |
| 208 | oss_buffer_size = runtime->oss.mmap_bytes; |
| 209 | } |
| 210 | |
| 211 | if (substream->oss.setup && |
| 212 | substream->oss.setup->period_size > 16) |
| 213 | oss_period_size = substream->oss.setup->period_size; |
| 214 | else if (runtime->oss.fragshift) { |
| 215 | oss_period_size = 1 << runtime->oss.fragshift; |
| 216 | if (oss_period_size > oss_buffer_size / 2) |
| 217 | oss_period_size = oss_buffer_size / 2; |
| 218 | } else { |
| 219 | int sd; |
| 220 | size_t bytes_per_sec = params_rate(oss_params) * snd_pcm_format_physical_width(params_format(oss_params)) * params_channels(oss_params) / 8; |
| 221 | |
| 222 | oss_period_size = oss_buffer_size; |
| 223 | do { |
| 224 | oss_period_size /= 2; |
| 225 | } while (oss_period_size > bytes_per_sec); |
| 226 | if (runtime->oss.subdivision == 0) { |
| 227 | sd = 4; |
| 228 | if (oss_period_size / sd > 4096) |
| 229 | sd *= 2; |
| 230 | if (oss_period_size / sd < 4096) |
| 231 | sd = 1; |
| 232 | } else |
| 233 | sd = runtime->oss.subdivision; |
| 234 | oss_period_size /= sd; |
| 235 | if (oss_period_size < 16) |
| 236 | oss_period_size = 16; |
| 237 | } |
| 238 | |
| 239 | min_period_size = snd_pcm_plug_client_size(substream, |
| 240 | snd_pcm_hw_param_value_min(slave_params, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, NULL)); |
| 241 | min_period_size *= oss_frame_size; |
| 242 | min_period_size = 1 << (ld2(min_period_size - 1) + 1); |
| 243 | if (oss_period_size < min_period_size) |
| 244 | oss_period_size = min_period_size; |
| 245 | |
| 246 | max_period_size = snd_pcm_plug_client_size(substream, |
| 247 | snd_pcm_hw_param_value_max(slave_params, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, NULL)); |
| 248 | max_period_size *= oss_frame_size; |
| 249 | max_period_size = 1 << ld2(max_period_size); |
| 250 | if (oss_period_size > max_period_size) |
| 251 | oss_period_size = max_period_size; |
| 252 | |
| 253 | oss_periods = oss_buffer_size / oss_period_size; |
| 254 | |
| 255 | if (substream->oss.setup) { |
| 256 | if (substream->oss.setup->periods > 1) |
| 257 | oss_periods = substream->oss.setup->periods; |
| 258 | } |
| 259 | |
| 260 | s = snd_pcm_hw_param_value_max(slave_params, SNDRV_PCM_HW_PARAM_PERIODS, NULL); |
| 261 | if (runtime->oss.maxfrags && s > runtime->oss.maxfrags) |
| 262 | s = runtime->oss.maxfrags; |
| 263 | if (oss_periods > s) |
| 264 | oss_periods = s; |
| 265 | |
| 266 | s = snd_pcm_hw_param_value_min(slave_params, SNDRV_PCM_HW_PARAM_PERIODS, NULL); |
| 267 | if (s < 2) |
| 268 | s = 2; |
| 269 | if (oss_periods < s) |
| 270 | oss_periods = s; |
| 271 | |
| 272 | while (oss_period_size * oss_periods > oss_buffer_size) |
| 273 | oss_period_size /= 2; |
| 274 | |
| 275 | snd_assert(oss_period_size >= 16, return -EINVAL); |
| 276 | runtime->oss.period_bytes = oss_period_size; |
| 277 | runtime->oss.period_frames = 1; |
| 278 | runtime->oss.periods = oss_periods; |
| 279 | return 0; |
| 280 | } |
| 281 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 282 | static int choose_rate(struct snd_pcm_substream *substream, |
| 283 | struct snd_pcm_hw_params *params, unsigned int best_rate) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 284 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 285 | struct snd_interval *it; |
| 286 | struct snd_pcm_hw_params *save; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 287 | unsigned int rate, prev; |
| 288 | |
| 289 | save = kmalloc(sizeof(*save), GFP_KERNEL); |
| 290 | if (save == NULL) |
| 291 | return -ENOMEM; |
| 292 | *save = *params; |
| 293 | it = hw_param_interval(save, SNDRV_PCM_HW_PARAM_RATE); |
| 294 | |
| 295 | /* try multiples of the best rate */ |
| 296 | rate = best_rate; |
| 297 | for (;;) { |
| 298 | if (it->max < rate || (it->max == rate && it->openmax)) |
| 299 | break; |
| 300 | if (it->min < rate || (it->min == rate && !it->openmin)) { |
| 301 | int ret; |
| 302 | ret = snd_pcm_hw_param_set(substream, params, |
| 303 | SNDRV_PCM_HW_PARAM_RATE, |
| 304 | rate, 0); |
| 305 | if (ret == (int)rate) { |
| 306 | kfree(save); |
| 307 | return rate; |
| 308 | } |
| 309 | *params = *save; |
| 310 | } |
| 311 | prev = rate; |
| 312 | rate += best_rate; |
| 313 | if (rate <= prev) |
| 314 | break; |
| 315 | } |
| 316 | |
| 317 | /* not found, use the nearest rate */ |
| 318 | kfree(save); |
| 319 | return snd_pcm_hw_param_near(substream, params, SNDRV_PCM_HW_PARAM_RATE, best_rate, NULL); |
| 320 | } |
| 321 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 322 | static int snd_pcm_oss_change_params(struct snd_pcm_substream *substream) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 323 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 324 | struct snd_pcm_runtime *runtime = substream->runtime; |
| 325 | struct snd_pcm_hw_params *params, *sparams; |
| 326 | struct snd_pcm_sw_params *sw_params; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 327 | ssize_t oss_buffer_size, oss_period_size; |
| 328 | size_t oss_frame_size; |
| 329 | int err; |
| 330 | int direct; |
| 331 | int format, sformat, n; |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 332 | struct snd_mask sformat_mask; |
| 333 | struct snd_mask mask; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 334 | |
| 335 | sw_params = kmalloc(sizeof(*sw_params), GFP_KERNEL); |
| 336 | params = kmalloc(sizeof(*params), GFP_KERNEL); |
| 337 | sparams = kmalloc(sizeof(*sparams), GFP_KERNEL); |
| 338 | if (!sw_params || !params || !sparams) { |
| 339 | snd_printd("No memory\n"); |
| 340 | err = -ENOMEM; |
| 341 | goto failure; |
| 342 | } |
| 343 | |
| 344 | if (atomic_read(&runtime->mmap_count)) { |
| 345 | direct = 1; |
| 346 | } else { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 347 | struct snd_pcm_oss_setup *setup = substream->oss.setup; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 348 | direct = (setup != NULL && setup->direct); |
| 349 | } |
| 350 | |
| 351 | _snd_pcm_hw_params_any(sparams); |
| 352 | _snd_pcm_hw_param_setinteger(sparams, SNDRV_PCM_HW_PARAM_PERIODS); |
| 353 | _snd_pcm_hw_param_min(sparams, SNDRV_PCM_HW_PARAM_PERIODS, 2, 0); |
| 354 | snd_mask_none(&mask); |
| 355 | if (atomic_read(&runtime->mmap_count)) |
| 356 | snd_mask_set(&mask, SNDRV_PCM_ACCESS_MMAP_INTERLEAVED); |
| 357 | else { |
| 358 | snd_mask_set(&mask, SNDRV_PCM_ACCESS_RW_INTERLEAVED); |
| 359 | if (!direct) |
| 360 | snd_mask_set(&mask, SNDRV_PCM_ACCESS_RW_NONINTERLEAVED); |
| 361 | } |
| 362 | err = snd_pcm_hw_param_mask(substream, sparams, SNDRV_PCM_HW_PARAM_ACCESS, &mask); |
| 363 | if (err < 0) { |
| 364 | snd_printd("No usable accesses\n"); |
| 365 | err = -EINVAL; |
| 366 | goto failure; |
| 367 | } |
| 368 | choose_rate(substream, sparams, runtime->oss.rate); |
| 369 | snd_pcm_hw_param_near(substream, sparams, SNDRV_PCM_HW_PARAM_CHANNELS, runtime->oss.channels, NULL); |
| 370 | |
| 371 | format = snd_pcm_oss_format_from(runtime->oss.format); |
| 372 | |
| 373 | sformat_mask = *hw_param_mask(sparams, SNDRV_PCM_HW_PARAM_FORMAT); |
| 374 | if (direct) |
| 375 | sformat = format; |
| 376 | else |
| 377 | sformat = snd_pcm_plug_slave_format(format, &sformat_mask); |
| 378 | |
| 379 | if (sformat < 0 || !snd_mask_test(&sformat_mask, sformat)) { |
| 380 | for (sformat = 0; sformat <= SNDRV_PCM_FORMAT_LAST; sformat++) { |
| 381 | if (snd_mask_test(&sformat_mask, sformat) && |
| 382 | snd_pcm_oss_format_to(sformat) >= 0) |
| 383 | break; |
| 384 | } |
| 385 | if (sformat > SNDRV_PCM_FORMAT_LAST) { |
| 386 | snd_printd("Cannot find a format!!!\n"); |
| 387 | err = -EINVAL; |
| 388 | goto failure; |
| 389 | } |
| 390 | } |
| 391 | err = _snd_pcm_hw_param_set(sparams, SNDRV_PCM_HW_PARAM_FORMAT, sformat, 0); |
| 392 | snd_assert(err >= 0, goto failure); |
| 393 | |
| 394 | if (direct) { |
| 395 | memcpy(params, sparams, sizeof(*params)); |
| 396 | } else { |
| 397 | _snd_pcm_hw_params_any(params); |
| 398 | _snd_pcm_hw_param_set(params, SNDRV_PCM_HW_PARAM_ACCESS, |
| 399 | SNDRV_PCM_ACCESS_RW_INTERLEAVED, 0); |
| 400 | _snd_pcm_hw_param_set(params, SNDRV_PCM_HW_PARAM_FORMAT, |
| 401 | snd_pcm_oss_format_from(runtime->oss.format), 0); |
| 402 | _snd_pcm_hw_param_set(params, SNDRV_PCM_HW_PARAM_CHANNELS, |
| 403 | runtime->oss.channels, 0); |
| 404 | _snd_pcm_hw_param_set(params, SNDRV_PCM_HW_PARAM_RATE, |
| 405 | runtime->oss.rate, 0); |
| 406 | pdprintf("client: access = %i, format = %i, channels = %i, rate = %i\n", |
| 407 | params_access(params), params_format(params), |
| 408 | params_channels(params), params_rate(params)); |
| 409 | } |
| 410 | pdprintf("slave: access = %i, format = %i, channels = %i, rate = %i\n", |
| 411 | params_access(sparams), params_format(sparams), |
| 412 | params_channels(sparams), params_rate(sparams)); |
| 413 | |
| 414 | oss_frame_size = snd_pcm_format_physical_width(params_format(params)) * |
| 415 | params_channels(params) / 8; |
| 416 | |
Jaroslav Kysela | 21a3479 | 2006-01-13 09:12:11 +0100 | [diff] [blame] | 417 | #ifdef CONFIG_SND_PCM_OSS_PLUGINS |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 418 | snd_pcm_oss_plugin_clear(substream); |
| 419 | if (!direct) { |
| 420 | /* add necessary plugins */ |
| 421 | snd_pcm_oss_plugin_clear(substream); |
| 422 | if ((err = snd_pcm_plug_format_plugins(substream, |
| 423 | params, |
| 424 | sparams)) < 0) { |
| 425 | snd_printd("snd_pcm_plug_format_plugins failed: %i\n", err); |
| 426 | snd_pcm_oss_plugin_clear(substream); |
| 427 | goto failure; |
| 428 | } |
| 429 | if (runtime->oss.plugin_first) { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 430 | struct snd_pcm_plugin *plugin; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 431 | if ((err = snd_pcm_plugin_build_io(substream, sparams, &plugin)) < 0) { |
| 432 | snd_printd("snd_pcm_plugin_build_io failed: %i\n", err); |
| 433 | snd_pcm_oss_plugin_clear(substream); |
| 434 | goto failure; |
| 435 | } |
| 436 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { |
| 437 | err = snd_pcm_plugin_append(plugin); |
| 438 | } else { |
| 439 | err = snd_pcm_plugin_insert(plugin); |
| 440 | } |
| 441 | if (err < 0) { |
| 442 | snd_pcm_oss_plugin_clear(substream); |
| 443 | goto failure; |
| 444 | } |
| 445 | } |
| 446 | } |
Jaroslav Kysela | 21a3479 | 2006-01-13 09:12:11 +0100 | [diff] [blame] | 447 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 448 | |
| 449 | err = snd_pcm_oss_period_size(substream, params, sparams); |
| 450 | if (err < 0) |
| 451 | goto failure; |
| 452 | |
| 453 | n = snd_pcm_plug_slave_size(substream, runtime->oss.period_bytes / oss_frame_size); |
| 454 | err = snd_pcm_hw_param_near(substream, sparams, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, n, NULL); |
| 455 | snd_assert(err >= 0, goto failure); |
| 456 | |
| 457 | err = snd_pcm_hw_param_near(substream, sparams, SNDRV_PCM_HW_PARAM_PERIODS, |
| 458 | runtime->oss.periods, NULL); |
| 459 | snd_assert(err >= 0, goto failure); |
| 460 | |
| 461 | snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DROP, NULL); |
| 462 | |
| 463 | if ((err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_HW_PARAMS, sparams)) < 0) { |
| 464 | snd_printd("HW_PARAMS failed: %i\n", err); |
| 465 | goto failure; |
| 466 | } |
| 467 | |
| 468 | memset(sw_params, 0, sizeof(*sw_params)); |
| 469 | if (runtime->oss.trigger) { |
| 470 | sw_params->start_threshold = 1; |
| 471 | } else { |
| 472 | sw_params->start_threshold = runtime->boundary; |
| 473 | } |
| 474 | if (atomic_read(&runtime->mmap_count) || substream->stream == SNDRV_PCM_STREAM_CAPTURE) |
| 475 | sw_params->stop_threshold = runtime->boundary; |
| 476 | else |
| 477 | sw_params->stop_threshold = runtime->buffer_size; |
| 478 | sw_params->tstamp_mode = SNDRV_PCM_TSTAMP_NONE; |
| 479 | sw_params->period_step = 1; |
| 480 | sw_params->sleep_min = 0; |
Takashi Iwai | 004e653 | 2005-04-12 17:33:59 +0200 | [diff] [blame] | 481 | sw_params->avail_min = substream->stream == SNDRV_PCM_STREAM_PLAYBACK ? |
| 482 | 1 : runtime->period_size; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 483 | sw_params->xfer_align = 1; |
| 484 | if (atomic_read(&runtime->mmap_count) || |
| 485 | (substream->oss.setup && substream->oss.setup->nosilence)) { |
| 486 | sw_params->silence_threshold = 0; |
| 487 | sw_params->silence_size = 0; |
| 488 | } else { |
| 489 | snd_pcm_uframes_t frames; |
| 490 | frames = runtime->period_size + 16; |
| 491 | if (frames > runtime->buffer_size) |
| 492 | frames = runtime->buffer_size; |
| 493 | sw_params->silence_threshold = frames; |
| 494 | sw_params->silence_size = frames; |
| 495 | } |
| 496 | |
| 497 | if ((err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_SW_PARAMS, sw_params)) < 0) { |
| 498 | snd_printd("SW_PARAMS failed: %i\n", err); |
| 499 | goto failure; |
| 500 | } |
| 501 | |
| 502 | runtime->oss.periods = params_periods(sparams); |
| 503 | oss_period_size = snd_pcm_plug_client_size(substream, params_period_size(sparams)); |
| 504 | snd_assert(oss_period_size >= 0, err = -EINVAL; goto failure); |
Jaroslav Kysela | 21a3479 | 2006-01-13 09:12:11 +0100 | [diff] [blame] | 505 | #ifdef CONFIG_SND_PCM_OSS_PLUGINS |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 506 | if (runtime->oss.plugin_first) { |
| 507 | err = snd_pcm_plug_alloc(substream, oss_period_size); |
| 508 | if (err < 0) |
| 509 | goto failure; |
| 510 | } |
Jaroslav Kysela | 21a3479 | 2006-01-13 09:12:11 +0100 | [diff] [blame] | 511 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 512 | oss_period_size *= oss_frame_size; |
| 513 | |
| 514 | oss_buffer_size = oss_period_size * runtime->oss.periods; |
| 515 | snd_assert(oss_buffer_size >= 0, err = -EINVAL; goto failure); |
| 516 | |
| 517 | runtime->oss.period_bytes = oss_period_size; |
| 518 | runtime->oss.buffer_bytes = oss_buffer_size; |
| 519 | |
| 520 | pdprintf("oss: period bytes = %i, buffer bytes = %i\n", |
| 521 | runtime->oss.period_bytes, |
| 522 | runtime->oss.buffer_bytes); |
| 523 | pdprintf("slave: period_size = %i, buffer_size = %i\n", |
| 524 | params_period_size(sparams), |
| 525 | params_buffer_size(sparams)); |
| 526 | |
| 527 | runtime->oss.format = snd_pcm_oss_format_to(params_format(params)); |
| 528 | runtime->oss.channels = params_channels(params); |
| 529 | runtime->oss.rate = params_rate(params); |
| 530 | |
| 531 | runtime->oss.params = 0; |
| 532 | runtime->oss.prepare = 1; |
| 533 | vfree(runtime->oss.buffer); |
| 534 | runtime->oss.buffer = vmalloc(runtime->oss.period_bytes); |
| 535 | runtime->oss.buffer_used = 0; |
| 536 | if (runtime->dma_area) |
| 537 | snd_pcm_format_set_silence(runtime->format, runtime->dma_area, bytes_to_samples(runtime, runtime->dma_bytes)); |
| 538 | |
| 539 | runtime->oss.period_frames = snd_pcm_alsa_frames(substream, oss_period_size); |
| 540 | |
| 541 | err = 0; |
| 542 | failure: |
| 543 | kfree(sw_params); |
| 544 | kfree(params); |
| 545 | kfree(sparams); |
| 546 | return err; |
| 547 | } |
| 548 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 549 | static int snd_pcm_oss_get_active_substream(struct snd_pcm_oss_file *pcm_oss_file, struct snd_pcm_substream **r_substream) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 550 | { |
| 551 | int idx, err; |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 552 | struct snd_pcm_substream *asubstream = NULL, *substream; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 553 | |
| 554 | for (idx = 0; idx < 2; idx++) { |
| 555 | substream = pcm_oss_file->streams[idx]; |
| 556 | if (substream == NULL) |
| 557 | continue; |
| 558 | if (asubstream == NULL) |
| 559 | asubstream = substream; |
| 560 | if (substream->runtime->oss.params) { |
| 561 | err = snd_pcm_oss_change_params(substream); |
| 562 | if (err < 0) |
| 563 | return err; |
| 564 | } |
| 565 | } |
| 566 | snd_assert(asubstream != NULL, return -EIO); |
| 567 | if (r_substream) |
| 568 | *r_substream = asubstream; |
| 569 | return 0; |
| 570 | } |
| 571 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 572 | static int snd_pcm_oss_prepare(struct snd_pcm_substream *substream) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 573 | { |
| 574 | int err; |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 575 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 576 | |
| 577 | err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_PREPARE, NULL); |
| 578 | if (err < 0) { |
| 579 | snd_printd("snd_pcm_oss_prepare: SNDRV_PCM_IOCTL_PREPARE failed\n"); |
| 580 | return err; |
| 581 | } |
| 582 | runtime->oss.prepare = 0; |
| 583 | runtime->oss.prev_hw_ptr_interrupt = 0; |
| 584 | runtime->oss.period_ptr = 0; |
| 585 | runtime->oss.buffer_used = 0; |
| 586 | |
| 587 | return 0; |
| 588 | } |
| 589 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 590 | static int snd_pcm_oss_make_ready(struct snd_pcm_substream *substream) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 591 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 592 | struct snd_pcm_runtime *runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 593 | int err; |
| 594 | |
| 595 | if (substream == NULL) |
| 596 | return 0; |
| 597 | runtime = substream->runtime; |
| 598 | if (runtime->oss.params) { |
| 599 | err = snd_pcm_oss_change_params(substream); |
| 600 | if (err < 0) |
| 601 | return err; |
| 602 | } |
| 603 | if (runtime->oss.prepare) { |
| 604 | err = snd_pcm_oss_prepare(substream); |
| 605 | if (err < 0) |
| 606 | return err; |
| 607 | } |
| 608 | return 0; |
| 609 | } |
| 610 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 611 | static int snd_pcm_oss_capture_position_fixup(struct snd_pcm_substream *substream, snd_pcm_sframes_t *delay) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 612 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 613 | struct snd_pcm_runtime *runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 614 | snd_pcm_uframes_t frames; |
| 615 | int err = 0; |
| 616 | |
| 617 | while (1) { |
| 618 | err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DELAY, delay); |
| 619 | if (err < 0) |
| 620 | break; |
| 621 | runtime = substream->runtime; |
| 622 | if (*delay <= (snd_pcm_sframes_t)runtime->buffer_size) |
| 623 | break; |
| 624 | /* in case of overrun, skip whole periods like OSS/Linux driver does */ |
| 625 | /* until avail(delay) <= buffer_size */ |
| 626 | frames = (*delay - runtime->buffer_size) + runtime->period_size - 1; |
| 627 | frames /= runtime->period_size; |
| 628 | frames *= runtime->period_size; |
| 629 | err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_FORWARD, &frames); |
| 630 | if (err < 0) |
| 631 | break; |
| 632 | } |
| 633 | return err; |
| 634 | } |
| 635 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 636 | snd_pcm_sframes_t snd_pcm_oss_write3(struct snd_pcm_substream *substream, const char *ptr, snd_pcm_uframes_t frames, int in_kernel) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 637 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 638 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 639 | int ret; |
| 640 | while (1) { |
| 641 | if (runtime->status->state == SNDRV_PCM_STATE_XRUN || |
| 642 | runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) { |
| 643 | #ifdef OSS_DEBUG |
| 644 | if (runtime->status->state == SNDRV_PCM_STATE_XRUN) |
| 645 | printk("pcm_oss: write: recovering from XRUN\n"); |
| 646 | else |
| 647 | printk("pcm_oss: write: recovering from SUSPEND\n"); |
| 648 | #endif |
| 649 | ret = snd_pcm_oss_prepare(substream); |
| 650 | if (ret < 0) |
| 651 | break; |
| 652 | } |
| 653 | if (in_kernel) { |
| 654 | mm_segment_t fs; |
| 655 | fs = snd_enter_user(); |
| 656 | ret = snd_pcm_lib_write(substream, (void __user *)ptr, frames); |
| 657 | snd_leave_user(fs); |
| 658 | } else { |
| 659 | ret = snd_pcm_lib_write(substream, (void __user *)ptr, frames); |
| 660 | } |
| 661 | if (ret != -EPIPE && ret != -ESTRPIPE) |
| 662 | break; |
| 663 | /* test, if we can't store new data, because the stream */ |
| 664 | /* has not been started */ |
| 665 | if (runtime->status->state == SNDRV_PCM_STATE_PREPARED) |
| 666 | return -EAGAIN; |
| 667 | } |
| 668 | return ret; |
| 669 | } |
| 670 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 671 | snd_pcm_sframes_t snd_pcm_oss_read3(struct snd_pcm_substream *substream, char *ptr, snd_pcm_uframes_t frames, int in_kernel) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 672 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 673 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 674 | snd_pcm_sframes_t delay; |
| 675 | int ret; |
| 676 | while (1) { |
| 677 | if (runtime->status->state == SNDRV_PCM_STATE_XRUN || |
| 678 | runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) { |
| 679 | #ifdef OSS_DEBUG |
| 680 | if (runtime->status->state == SNDRV_PCM_STATE_XRUN) |
| 681 | printk("pcm_oss: read: recovering from XRUN\n"); |
| 682 | else |
| 683 | printk("pcm_oss: read: recovering from SUSPEND\n"); |
| 684 | #endif |
| 685 | ret = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DRAIN, NULL); |
| 686 | if (ret < 0) |
| 687 | break; |
| 688 | } else if (runtime->status->state == SNDRV_PCM_STATE_SETUP) { |
| 689 | ret = snd_pcm_oss_prepare(substream); |
| 690 | if (ret < 0) |
| 691 | break; |
| 692 | } |
| 693 | ret = snd_pcm_oss_capture_position_fixup(substream, &delay); |
| 694 | if (ret < 0) |
| 695 | break; |
| 696 | if (in_kernel) { |
| 697 | mm_segment_t fs; |
| 698 | fs = snd_enter_user(); |
| 699 | ret = snd_pcm_lib_read(substream, (void __user *)ptr, frames); |
| 700 | snd_leave_user(fs); |
| 701 | } else { |
| 702 | ret = snd_pcm_lib_read(substream, (void __user *)ptr, frames); |
| 703 | } |
| 704 | if (ret == -EPIPE) { |
| 705 | if (runtime->status->state == SNDRV_PCM_STATE_DRAINING) { |
| 706 | ret = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DROP, NULL); |
| 707 | if (ret < 0) |
| 708 | break; |
| 709 | } |
| 710 | continue; |
| 711 | } |
| 712 | if (ret != -ESTRPIPE) |
| 713 | break; |
| 714 | } |
| 715 | return ret; |
| 716 | } |
| 717 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 718 | snd_pcm_sframes_t snd_pcm_oss_writev3(struct snd_pcm_substream *substream, void **bufs, snd_pcm_uframes_t frames, int in_kernel) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 719 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 720 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 721 | int ret; |
| 722 | while (1) { |
| 723 | if (runtime->status->state == SNDRV_PCM_STATE_XRUN || |
| 724 | runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) { |
| 725 | #ifdef OSS_DEBUG |
| 726 | if (runtime->status->state == SNDRV_PCM_STATE_XRUN) |
| 727 | printk("pcm_oss: writev: recovering from XRUN\n"); |
| 728 | else |
| 729 | printk("pcm_oss: writev: recovering from SUSPEND\n"); |
| 730 | #endif |
| 731 | ret = snd_pcm_oss_prepare(substream); |
| 732 | if (ret < 0) |
| 733 | break; |
| 734 | } |
| 735 | if (in_kernel) { |
| 736 | mm_segment_t fs; |
| 737 | fs = snd_enter_user(); |
| 738 | ret = snd_pcm_lib_writev(substream, (void __user **)bufs, frames); |
| 739 | snd_leave_user(fs); |
| 740 | } else { |
| 741 | ret = snd_pcm_lib_writev(substream, (void __user **)bufs, frames); |
| 742 | } |
| 743 | if (ret != -EPIPE && ret != -ESTRPIPE) |
| 744 | break; |
| 745 | |
| 746 | /* test, if we can't store new data, because the stream */ |
| 747 | /* has not been started */ |
| 748 | if (runtime->status->state == SNDRV_PCM_STATE_PREPARED) |
| 749 | return -EAGAIN; |
| 750 | } |
| 751 | return ret; |
| 752 | } |
| 753 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 754 | snd_pcm_sframes_t snd_pcm_oss_readv3(struct snd_pcm_substream *substream, void **bufs, snd_pcm_uframes_t frames, int in_kernel) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 755 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 756 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 757 | int ret; |
| 758 | while (1) { |
| 759 | if (runtime->status->state == SNDRV_PCM_STATE_XRUN || |
| 760 | runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) { |
| 761 | #ifdef OSS_DEBUG |
| 762 | if (runtime->status->state == SNDRV_PCM_STATE_XRUN) |
| 763 | printk("pcm_oss: readv: recovering from XRUN\n"); |
| 764 | else |
| 765 | printk("pcm_oss: readv: recovering from SUSPEND\n"); |
| 766 | #endif |
| 767 | ret = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DRAIN, NULL); |
| 768 | if (ret < 0) |
| 769 | break; |
| 770 | } else if (runtime->status->state == SNDRV_PCM_STATE_SETUP) { |
| 771 | ret = snd_pcm_oss_prepare(substream); |
| 772 | if (ret < 0) |
| 773 | break; |
| 774 | } |
| 775 | if (in_kernel) { |
| 776 | mm_segment_t fs; |
| 777 | fs = snd_enter_user(); |
| 778 | ret = snd_pcm_lib_readv(substream, (void __user **)bufs, frames); |
| 779 | snd_leave_user(fs); |
| 780 | } else { |
| 781 | ret = snd_pcm_lib_readv(substream, (void __user **)bufs, frames); |
| 782 | } |
| 783 | if (ret != -EPIPE && ret != -ESTRPIPE) |
| 784 | break; |
| 785 | } |
| 786 | return ret; |
| 787 | } |
| 788 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 789 | static ssize_t snd_pcm_oss_write2(struct snd_pcm_substream *substream, const char *buf, size_t bytes, int in_kernel) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 790 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 791 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 792 | snd_pcm_sframes_t frames, frames1; |
Jaroslav Kysela | 21a3479 | 2006-01-13 09:12:11 +0100 | [diff] [blame] | 793 | #ifdef CONFIG_SND_PCM_OSS_PLUGINS |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 794 | if (runtime->oss.plugin_first) { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 795 | struct snd_pcm_plugin_channel *channels; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 796 | size_t oss_frame_bytes = (runtime->oss.plugin_first->src_width * runtime->oss.plugin_first->src_format.channels) / 8; |
| 797 | if (!in_kernel) { |
| 798 | if (copy_from_user(runtime->oss.buffer, (const char __user *)buf, bytes)) |
| 799 | return -EFAULT; |
| 800 | buf = runtime->oss.buffer; |
| 801 | } |
| 802 | frames = bytes / oss_frame_bytes; |
| 803 | frames1 = snd_pcm_plug_client_channels_buf(substream, (char *)buf, frames, &channels); |
| 804 | if (frames1 < 0) |
| 805 | return frames1; |
| 806 | frames1 = snd_pcm_plug_write_transfer(substream, channels, frames1); |
| 807 | if (frames1 <= 0) |
| 808 | return frames1; |
| 809 | bytes = frames1 * oss_frame_bytes; |
Jaroslav Kysela | 21a3479 | 2006-01-13 09:12:11 +0100 | [diff] [blame] | 810 | } else |
| 811 | #endif |
| 812 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 813 | frames = bytes_to_frames(runtime, bytes); |
| 814 | frames1 = snd_pcm_oss_write3(substream, buf, frames, in_kernel); |
| 815 | if (frames1 <= 0) |
| 816 | return frames1; |
| 817 | bytes = frames_to_bytes(runtime, frames1); |
| 818 | } |
| 819 | return bytes; |
| 820 | } |
| 821 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 822 | static ssize_t snd_pcm_oss_write1(struct snd_pcm_substream *substream, const char __user *buf, size_t bytes) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 823 | { |
| 824 | size_t xfer = 0; |
| 825 | ssize_t tmp; |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 826 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 827 | |
| 828 | if (atomic_read(&runtime->mmap_count)) |
| 829 | return -ENXIO; |
| 830 | |
| 831 | if ((tmp = snd_pcm_oss_make_ready(substream)) < 0) |
| 832 | return tmp; |
| 833 | while (bytes > 0) { |
| 834 | if (bytes < runtime->oss.period_bytes || runtime->oss.buffer_used > 0) { |
| 835 | tmp = bytes; |
| 836 | if (tmp + runtime->oss.buffer_used > runtime->oss.period_bytes) |
| 837 | tmp = runtime->oss.period_bytes - runtime->oss.buffer_used; |
| 838 | if (tmp > 0) { |
| 839 | if (copy_from_user(runtime->oss.buffer + runtime->oss.buffer_used, buf, tmp)) |
| 840 | return xfer > 0 ? (snd_pcm_sframes_t)xfer : -EFAULT; |
| 841 | } |
| 842 | runtime->oss.buffer_used += tmp; |
| 843 | buf += tmp; |
| 844 | bytes -= tmp; |
| 845 | xfer += tmp; |
| 846 | if ((substream->oss.setup != NULL && substream->oss.setup->partialfrag) || |
| 847 | runtime->oss.buffer_used == runtime->oss.period_bytes) { |
| 848 | tmp = snd_pcm_oss_write2(substream, runtime->oss.buffer + runtime->oss.period_ptr, |
| 849 | runtime->oss.buffer_used - runtime->oss.period_ptr, 1); |
| 850 | if (tmp <= 0) |
| 851 | return xfer > 0 ? (snd_pcm_sframes_t)xfer : tmp; |
| 852 | runtime->oss.bytes += tmp; |
| 853 | runtime->oss.period_ptr += tmp; |
| 854 | runtime->oss.period_ptr %= runtime->oss.period_bytes; |
| 855 | if (runtime->oss.period_ptr == 0 || |
| 856 | runtime->oss.period_ptr == runtime->oss.buffer_used) |
| 857 | runtime->oss.buffer_used = 0; |
| 858 | else if ((substream->ffile->f_flags & O_NONBLOCK) != 0) |
| 859 | return xfer > 0 ? xfer : -EAGAIN; |
| 860 | } |
| 861 | } else { |
Clemens Ladisch | 4d23359 | 2005-09-05 10:35:20 +0200 | [diff] [blame] | 862 | tmp = snd_pcm_oss_write2(substream, |
| 863 | (const char __force *)buf, |
| 864 | runtime->oss.period_bytes, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 865 | if (tmp <= 0) |
| 866 | return xfer > 0 ? (snd_pcm_sframes_t)xfer : tmp; |
| 867 | runtime->oss.bytes += tmp; |
| 868 | buf += tmp; |
| 869 | bytes -= tmp; |
| 870 | xfer += tmp; |
| 871 | if ((substream->ffile->f_flags & O_NONBLOCK) != 0 && |
| 872 | tmp != runtime->oss.period_bytes) |
| 873 | break; |
| 874 | } |
| 875 | } |
| 876 | return xfer; |
| 877 | } |
| 878 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 879 | static ssize_t snd_pcm_oss_read2(struct snd_pcm_substream *substream, char *buf, size_t bytes, int in_kernel) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 880 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 881 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 882 | snd_pcm_sframes_t frames, frames1; |
Jaroslav Kysela | 21a3479 | 2006-01-13 09:12:11 +0100 | [diff] [blame] | 883 | #ifdef CONFIG_SND_PCM_OSS_PLUGINS |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 884 | char __user *final_dst = (char __user *)buf; |
| 885 | if (runtime->oss.plugin_first) { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 886 | struct snd_pcm_plugin_channel *channels; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 887 | size_t oss_frame_bytes = (runtime->oss.plugin_last->dst_width * runtime->oss.plugin_last->dst_format.channels) / 8; |
| 888 | if (!in_kernel) |
| 889 | buf = runtime->oss.buffer; |
| 890 | frames = bytes / oss_frame_bytes; |
| 891 | frames1 = snd_pcm_plug_client_channels_buf(substream, buf, frames, &channels); |
| 892 | if (frames1 < 0) |
| 893 | return frames1; |
| 894 | frames1 = snd_pcm_plug_read_transfer(substream, channels, frames1); |
| 895 | if (frames1 <= 0) |
| 896 | return frames1; |
| 897 | bytes = frames1 * oss_frame_bytes; |
| 898 | if (!in_kernel && copy_to_user(final_dst, buf, bytes)) |
| 899 | return -EFAULT; |
Jaroslav Kysela | 21a3479 | 2006-01-13 09:12:11 +0100 | [diff] [blame] | 900 | } else |
| 901 | #endif |
| 902 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 903 | frames = bytes_to_frames(runtime, bytes); |
| 904 | frames1 = snd_pcm_oss_read3(substream, buf, frames, in_kernel); |
| 905 | if (frames1 <= 0) |
| 906 | return frames1; |
| 907 | bytes = frames_to_bytes(runtime, frames1); |
| 908 | } |
| 909 | return bytes; |
| 910 | } |
| 911 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 912 | static ssize_t snd_pcm_oss_read1(struct snd_pcm_substream *substream, char __user *buf, size_t bytes) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 913 | { |
| 914 | size_t xfer = 0; |
| 915 | ssize_t tmp; |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 916 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 917 | |
| 918 | if (atomic_read(&runtime->mmap_count)) |
| 919 | return -ENXIO; |
| 920 | |
| 921 | if ((tmp = snd_pcm_oss_make_ready(substream)) < 0) |
| 922 | return tmp; |
| 923 | while (bytes > 0) { |
| 924 | if (bytes < runtime->oss.period_bytes || runtime->oss.buffer_used > 0) { |
| 925 | if (runtime->oss.buffer_used == 0) { |
| 926 | tmp = snd_pcm_oss_read2(substream, runtime->oss.buffer, runtime->oss.period_bytes, 1); |
| 927 | if (tmp <= 0) |
| 928 | return xfer > 0 ? (snd_pcm_sframes_t)xfer : tmp; |
| 929 | runtime->oss.bytes += tmp; |
| 930 | runtime->oss.period_ptr = tmp; |
| 931 | runtime->oss.buffer_used = tmp; |
| 932 | } |
| 933 | tmp = bytes; |
| 934 | if ((size_t) tmp > runtime->oss.buffer_used) |
| 935 | tmp = runtime->oss.buffer_used; |
| 936 | if (copy_to_user(buf, runtime->oss.buffer + (runtime->oss.period_ptr - runtime->oss.buffer_used), tmp)) |
| 937 | return xfer > 0 ? (snd_pcm_sframes_t)xfer : -EFAULT; |
| 938 | buf += tmp; |
| 939 | bytes -= tmp; |
| 940 | xfer += tmp; |
| 941 | runtime->oss.buffer_used -= tmp; |
| 942 | } else { |
Clemens Ladisch | 4d23359 | 2005-09-05 10:35:20 +0200 | [diff] [blame] | 943 | tmp = snd_pcm_oss_read2(substream, (char __force *)buf, |
| 944 | runtime->oss.period_bytes, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 945 | if (tmp <= 0) |
| 946 | return xfer > 0 ? (snd_pcm_sframes_t)xfer : tmp; |
| 947 | runtime->oss.bytes += tmp; |
| 948 | buf += tmp; |
| 949 | bytes -= tmp; |
| 950 | xfer += tmp; |
| 951 | } |
| 952 | } |
| 953 | return xfer; |
| 954 | } |
| 955 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 956 | static int snd_pcm_oss_reset(struct snd_pcm_oss_file *pcm_oss_file) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 957 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 958 | struct snd_pcm_substream *substream; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 959 | |
| 960 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK]; |
| 961 | if (substream != NULL) { |
| 962 | snd_pcm_kernel_playback_ioctl(substream, SNDRV_PCM_IOCTL_DROP, NULL); |
| 963 | substream->runtime->oss.prepare = 1; |
| 964 | } |
| 965 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE]; |
| 966 | if (substream != NULL) { |
| 967 | snd_pcm_kernel_capture_ioctl(substream, SNDRV_PCM_IOCTL_DROP, NULL); |
| 968 | substream->runtime->oss.prepare = 1; |
| 969 | } |
| 970 | return 0; |
| 971 | } |
| 972 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 973 | static int snd_pcm_oss_post(struct snd_pcm_oss_file *pcm_oss_file) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 974 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 975 | struct snd_pcm_substream *substream; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 976 | int err; |
| 977 | |
| 978 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK]; |
| 979 | if (substream != NULL) { |
| 980 | if ((err = snd_pcm_oss_make_ready(substream)) < 0) |
| 981 | return err; |
| 982 | snd_pcm_kernel_playback_ioctl(substream, SNDRV_PCM_IOCTL_START, NULL); |
| 983 | } |
| 984 | /* note: all errors from the start action are ignored */ |
| 985 | /* OSS apps do not know, how to handle them */ |
| 986 | return 0; |
| 987 | } |
| 988 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 989 | static int snd_pcm_oss_sync1(struct snd_pcm_substream *substream, size_t size) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 990 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 991 | struct snd_pcm_runtime *runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 992 | ssize_t result = 0; |
| 993 | long res; |
| 994 | wait_queue_t wait; |
| 995 | |
| 996 | runtime = substream->runtime; |
| 997 | init_waitqueue_entry(&wait, current); |
| 998 | add_wait_queue(&runtime->sleep, &wait); |
| 999 | #ifdef OSS_DEBUG |
| 1000 | printk("sync1: size = %li\n", size); |
| 1001 | #endif |
| 1002 | while (1) { |
| 1003 | result = snd_pcm_oss_write2(substream, runtime->oss.buffer, size, 1); |
| 1004 | if (result > 0) { |
| 1005 | runtime->oss.buffer_used = 0; |
| 1006 | result = 0; |
| 1007 | break; |
| 1008 | } |
| 1009 | if (result != 0 && result != -EAGAIN) |
| 1010 | break; |
| 1011 | result = 0; |
| 1012 | set_current_state(TASK_INTERRUPTIBLE); |
| 1013 | snd_pcm_stream_lock_irq(substream); |
| 1014 | res = runtime->status->state; |
| 1015 | snd_pcm_stream_unlock_irq(substream); |
| 1016 | if (res != SNDRV_PCM_STATE_RUNNING) { |
| 1017 | set_current_state(TASK_RUNNING); |
| 1018 | break; |
| 1019 | } |
| 1020 | res = schedule_timeout(10 * HZ); |
| 1021 | if (signal_pending(current)) { |
| 1022 | result = -ERESTARTSYS; |
| 1023 | break; |
| 1024 | } |
| 1025 | if (res == 0) { |
| 1026 | snd_printk(KERN_ERR "OSS sync error - DMA timeout\n"); |
| 1027 | result = -EIO; |
| 1028 | break; |
| 1029 | } |
| 1030 | } |
| 1031 | remove_wait_queue(&runtime->sleep, &wait); |
| 1032 | return result; |
| 1033 | } |
| 1034 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1035 | static int snd_pcm_oss_sync(struct snd_pcm_oss_file *pcm_oss_file) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1036 | { |
| 1037 | int err = 0; |
| 1038 | unsigned int saved_f_flags; |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1039 | struct snd_pcm_substream *substream; |
| 1040 | struct snd_pcm_runtime *runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1041 | snd_pcm_format_t format; |
| 1042 | unsigned long width; |
| 1043 | size_t size; |
| 1044 | |
| 1045 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK]; |
| 1046 | if (substream != NULL) { |
| 1047 | runtime = substream->runtime; |
| 1048 | if (atomic_read(&runtime->mmap_count)) |
| 1049 | goto __direct; |
| 1050 | if ((err = snd_pcm_oss_make_ready(substream)) < 0) |
| 1051 | return err; |
| 1052 | format = snd_pcm_oss_format_from(runtime->oss.format); |
| 1053 | width = snd_pcm_format_physical_width(format); |
| 1054 | if (runtime->oss.buffer_used > 0) { |
| 1055 | #ifdef OSS_DEBUG |
| 1056 | printk("sync: buffer_used\n"); |
| 1057 | #endif |
| 1058 | size = (8 * (runtime->oss.period_bytes - runtime->oss.buffer_used) + 7) / width; |
| 1059 | snd_pcm_format_set_silence(format, |
| 1060 | runtime->oss.buffer + runtime->oss.buffer_used, |
| 1061 | size); |
| 1062 | err = snd_pcm_oss_sync1(substream, runtime->oss.period_bytes); |
| 1063 | if (err < 0) |
| 1064 | return err; |
| 1065 | } else if (runtime->oss.period_ptr > 0) { |
| 1066 | #ifdef OSS_DEBUG |
| 1067 | printk("sync: period_ptr\n"); |
| 1068 | #endif |
| 1069 | size = runtime->oss.period_bytes - runtime->oss.period_ptr; |
| 1070 | snd_pcm_format_set_silence(format, |
| 1071 | runtime->oss.buffer, |
| 1072 | size * 8 / width); |
| 1073 | err = snd_pcm_oss_sync1(substream, size); |
| 1074 | if (err < 0) |
| 1075 | return err; |
| 1076 | } |
| 1077 | /* |
| 1078 | * The ALSA's period might be a bit large than OSS one. |
| 1079 | * Fill the remain portion of ALSA period with zeros. |
| 1080 | */ |
| 1081 | size = runtime->control->appl_ptr % runtime->period_size; |
| 1082 | if (size > 0) { |
| 1083 | size = runtime->period_size - size; |
| 1084 | if (runtime->access == SNDRV_PCM_ACCESS_RW_INTERLEAVED) { |
| 1085 | size = (runtime->frame_bits * size) / 8; |
| 1086 | while (size > 0) { |
| 1087 | mm_segment_t fs; |
| 1088 | size_t size1 = size < runtime->oss.period_bytes ? size : runtime->oss.period_bytes; |
| 1089 | size -= size1; |
| 1090 | size1 *= 8; |
| 1091 | size1 /= runtime->sample_bits; |
| 1092 | snd_pcm_format_set_silence(runtime->format, |
| 1093 | runtime->oss.buffer, |
| 1094 | size1); |
| 1095 | fs = snd_enter_user(); |
| 1096 | snd_pcm_lib_write(substream, (void __user *)runtime->oss.buffer, size1); |
| 1097 | snd_leave_user(fs); |
| 1098 | } |
| 1099 | } else if (runtime->access == SNDRV_PCM_ACCESS_RW_NONINTERLEAVED) { |
| 1100 | void __user *buffers[runtime->channels]; |
| 1101 | memset(buffers, 0, runtime->channels * sizeof(void *)); |
| 1102 | snd_pcm_lib_writev(substream, buffers, size); |
| 1103 | } |
| 1104 | } |
| 1105 | /* |
| 1106 | * finish sync: drain the buffer |
| 1107 | */ |
| 1108 | __direct: |
| 1109 | saved_f_flags = substream->ffile->f_flags; |
| 1110 | substream->ffile->f_flags &= ~O_NONBLOCK; |
| 1111 | err = snd_pcm_kernel_playback_ioctl(substream, SNDRV_PCM_IOCTL_DRAIN, NULL); |
| 1112 | substream->ffile->f_flags = saved_f_flags; |
| 1113 | if (err < 0) |
| 1114 | return err; |
| 1115 | runtime->oss.prepare = 1; |
| 1116 | } |
| 1117 | |
| 1118 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE]; |
| 1119 | if (substream != NULL) { |
| 1120 | if ((err = snd_pcm_oss_make_ready(substream)) < 0) |
| 1121 | return err; |
| 1122 | runtime = substream->runtime; |
| 1123 | err = snd_pcm_kernel_capture_ioctl(substream, SNDRV_PCM_IOCTL_DROP, NULL); |
| 1124 | if (err < 0) |
| 1125 | return err; |
| 1126 | runtime->oss.buffer_used = 0; |
| 1127 | runtime->oss.prepare = 1; |
| 1128 | } |
| 1129 | return 0; |
| 1130 | } |
| 1131 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1132 | static int snd_pcm_oss_set_rate(struct snd_pcm_oss_file *pcm_oss_file, int rate) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1133 | { |
| 1134 | int idx; |
| 1135 | |
| 1136 | for (idx = 1; idx >= 0; --idx) { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1137 | struct snd_pcm_substream *substream = pcm_oss_file->streams[idx]; |
| 1138 | struct snd_pcm_runtime *runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1139 | if (substream == NULL) |
| 1140 | continue; |
| 1141 | runtime = substream->runtime; |
| 1142 | if (rate < 1000) |
| 1143 | rate = 1000; |
| 1144 | else if (rate > 192000) |
| 1145 | rate = 192000; |
| 1146 | if (runtime->oss.rate != rate) { |
| 1147 | runtime->oss.params = 1; |
| 1148 | runtime->oss.rate = rate; |
| 1149 | } |
| 1150 | } |
| 1151 | return snd_pcm_oss_get_rate(pcm_oss_file); |
| 1152 | } |
| 1153 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1154 | static int snd_pcm_oss_get_rate(struct snd_pcm_oss_file *pcm_oss_file) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1155 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1156 | struct snd_pcm_substream *substream; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1157 | int err; |
| 1158 | |
| 1159 | if ((err = snd_pcm_oss_get_active_substream(pcm_oss_file, &substream)) < 0) |
| 1160 | return err; |
| 1161 | return substream->runtime->oss.rate; |
| 1162 | } |
| 1163 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1164 | static int snd_pcm_oss_set_channels(struct snd_pcm_oss_file *pcm_oss_file, unsigned int channels) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1165 | { |
| 1166 | int idx; |
| 1167 | if (channels < 1) |
| 1168 | channels = 1; |
| 1169 | if (channels > 128) |
| 1170 | return -EINVAL; |
| 1171 | for (idx = 1; idx >= 0; --idx) { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1172 | struct snd_pcm_substream *substream = pcm_oss_file->streams[idx]; |
| 1173 | struct snd_pcm_runtime *runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1174 | if (substream == NULL) |
| 1175 | continue; |
| 1176 | runtime = substream->runtime; |
| 1177 | if (runtime->oss.channels != channels) { |
| 1178 | runtime->oss.params = 1; |
| 1179 | runtime->oss.channels = channels; |
| 1180 | } |
| 1181 | } |
| 1182 | return snd_pcm_oss_get_channels(pcm_oss_file); |
| 1183 | } |
| 1184 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1185 | static int snd_pcm_oss_get_channels(struct snd_pcm_oss_file *pcm_oss_file) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1186 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1187 | struct snd_pcm_substream *substream; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1188 | int err; |
| 1189 | |
| 1190 | if ((err = snd_pcm_oss_get_active_substream(pcm_oss_file, &substream)) < 0) |
| 1191 | return err; |
| 1192 | return substream->runtime->oss.channels; |
| 1193 | } |
| 1194 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1195 | static int snd_pcm_oss_get_block_size(struct snd_pcm_oss_file *pcm_oss_file) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1196 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1197 | struct snd_pcm_substream *substream; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1198 | int err; |
| 1199 | |
| 1200 | if ((err = snd_pcm_oss_get_active_substream(pcm_oss_file, &substream)) < 0) |
| 1201 | return err; |
| 1202 | return substream->runtime->oss.period_bytes; |
| 1203 | } |
| 1204 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1205 | static int snd_pcm_oss_get_formats(struct snd_pcm_oss_file *pcm_oss_file) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1206 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1207 | struct snd_pcm_substream *substream; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1208 | int err; |
| 1209 | int direct; |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1210 | struct snd_pcm_hw_params *params; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1211 | unsigned int formats = 0; |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1212 | struct snd_mask format_mask; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1213 | int fmt; |
| 1214 | |
| 1215 | if ((err = snd_pcm_oss_get_active_substream(pcm_oss_file, &substream)) < 0) |
| 1216 | return err; |
| 1217 | if (atomic_read(&substream->runtime->mmap_count)) { |
| 1218 | direct = 1; |
| 1219 | } else { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1220 | struct snd_pcm_oss_setup *setup = substream->oss.setup; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1221 | direct = (setup != NULL && setup->direct); |
| 1222 | } |
| 1223 | if (!direct) |
| 1224 | return AFMT_MU_LAW | AFMT_U8 | |
| 1225 | AFMT_S16_LE | AFMT_S16_BE | |
| 1226 | AFMT_S8 | AFMT_U16_LE | |
| 1227 | AFMT_U16_BE; |
| 1228 | params = kmalloc(sizeof(*params), GFP_KERNEL); |
| 1229 | if (!params) |
| 1230 | return -ENOMEM; |
| 1231 | _snd_pcm_hw_params_any(params); |
| 1232 | err = snd_pcm_hw_refine(substream, params); |
| 1233 | format_mask = *hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT); |
| 1234 | kfree(params); |
| 1235 | snd_assert(err >= 0, return err); |
| 1236 | for (fmt = 0; fmt < 32; ++fmt) { |
| 1237 | if (snd_mask_test(&format_mask, fmt)) { |
| 1238 | int f = snd_pcm_oss_format_to(fmt); |
| 1239 | if (f >= 0) |
| 1240 | formats |= f; |
| 1241 | } |
| 1242 | } |
| 1243 | return formats; |
| 1244 | } |
| 1245 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1246 | static int snd_pcm_oss_set_format(struct snd_pcm_oss_file *pcm_oss_file, int format) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1247 | { |
| 1248 | int formats, idx; |
| 1249 | |
| 1250 | if (format != AFMT_QUERY) { |
| 1251 | formats = snd_pcm_oss_get_formats(pcm_oss_file); |
| 1252 | if (!(formats & format)) |
| 1253 | format = AFMT_U8; |
| 1254 | for (idx = 1; idx >= 0; --idx) { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1255 | struct snd_pcm_substream *substream = pcm_oss_file->streams[idx]; |
| 1256 | struct snd_pcm_runtime *runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1257 | if (substream == NULL) |
| 1258 | continue; |
| 1259 | runtime = substream->runtime; |
| 1260 | if (runtime->oss.format != format) { |
| 1261 | runtime->oss.params = 1; |
| 1262 | runtime->oss.format = format; |
| 1263 | } |
| 1264 | } |
| 1265 | } |
| 1266 | return snd_pcm_oss_get_format(pcm_oss_file); |
| 1267 | } |
| 1268 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1269 | static int snd_pcm_oss_get_format(struct snd_pcm_oss_file *pcm_oss_file) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1270 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1271 | struct snd_pcm_substream *substream; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1272 | int err; |
| 1273 | |
| 1274 | if ((err = snd_pcm_oss_get_active_substream(pcm_oss_file, &substream)) < 0) |
| 1275 | return err; |
| 1276 | return substream->runtime->oss.format; |
| 1277 | } |
| 1278 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1279 | static int snd_pcm_oss_set_subdivide1(struct snd_pcm_substream *substream, int subdivide) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1280 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1281 | struct snd_pcm_runtime *runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1282 | |
| 1283 | if (substream == NULL) |
| 1284 | return 0; |
| 1285 | runtime = substream->runtime; |
| 1286 | if (subdivide == 0) { |
| 1287 | subdivide = runtime->oss.subdivision; |
| 1288 | if (subdivide == 0) |
| 1289 | subdivide = 1; |
| 1290 | return subdivide; |
| 1291 | } |
| 1292 | if (runtime->oss.subdivision || runtime->oss.fragshift) |
| 1293 | return -EINVAL; |
| 1294 | if (subdivide != 1 && subdivide != 2 && subdivide != 4 && |
| 1295 | subdivide != 8 && subdivide != 16) |
| 1296 | return -EINVAL; |
| 1297 | runtime->oss.subdivision = subdivide; |
| 1298 | runtime->oss.params = 1; |
| 1299 | return subdivide; |
| 1300 | } |
| 1301 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1302 | static int snd_pcm_oss_set_subdivide(struct snd_pcm_oss_file *pcm_oss_file, int subdivide) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1303 | { |
| 1304 | int err = -EINVAL, idx; |
| 1305 | |
| 1306 | for (idx = 1; idx >= 0; --idx) { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1307 | struct snd_pcm_substream *substream = pcm_oss_file->streams[idx]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1308 | if (substream == NULL) |
| 1309 | continue; |
| 1310 | if ((err = snd_pcm_oss_set_subdivide1(substream, subdivide)) < 0) |
| 1311 | return err; |
| 1312 | } |
| 1313 | return err; |
| 1314 | } |
| 1315 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1316 | static int snd_pcm_oss_set_fragment1(struct snd_pcm_substream *substream, unsigned int val) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1317 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1318 | struct snd_pcm_runtime *runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1319 | |
| 1320 | if (substream == NULL) |
| 1321 | return 0; |
| 1322 | runtime = substream->runtime; |
| 1323 | if (runtime->oss.subdivision || runtime->oss.fragshift) |
| 1324 | return -EINVAL; |
| 1325 | runtime->oss.fragshift = val & 0xffff; |
| 1326 | runtime->oss.maxfrags = (val >> 16) & 0xffff; |
| 1327 | if (runtime->oss.fragshift < 4) /* < 16 */ |
| 1328 | runtime->oss.fragshift = 4; |
| 1329 | if (runtime->oss.maxfrags < 2) |
| 1330 | runtime->oss.maxfrags = 2; |
| 1331 | runtime->oss.params = 1; |
| 1332 | return 0; |
| 1333 | } |
| 1334 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1335 | static int snd_pcm_oss_set_fragment(struct snd_pcm_oss_file *pcm_oss_file, unsigned int val) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1336 | { |
| 1337 | int err = -EINVAL, idx; |
| 1338 | |
| 1339 | for (idx = 1; idx >= 0; --idx) { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1340 | struct snd_pcm_substream *substream = pcm_oss_file->streams[idx]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1341 | if (substream == NULL) |
| 1342 | continue; |
| 1343 | if ((err = snd_pcm_oss_set_fragment1(substream, val)) < 0) |
| 1344 | return err; |
| 1345 | } |
| 1346 | return err; |
| 1347 | } |
| 1348 | |
| 1349 | static int snd_pcm_oss_nonblock(struct file * file) |
| 1350 | { |
| 1351 | file->f_flags |= O_NONBLOCK; |
| 1352 | return 0; |
| 1353 | } |
| 1354 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1355 | static int snd_pcm_oss_get_caps1(struct snd_pcm_substream *substream, int res) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1356 | { |
| 1357 | |
| 1358 | if (substream == NULL) { |
| 1359 | res &= ~DSP_CAP_DUPLEX; |
| 1360 | return res; |
| 1361 | } |
| 1362 | #ifdef DSP_CAP_MULTI |
| 1363 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) |
| 1364 | if (substream->pstr->substream_count > 1) |
| 1365 | res |= DSP_CAP_MULTI; |
| 1366 | #endif |
| 1367 | /* DSP_CAP_REALTIME is set all times: */ |
| 1368 | /* all ALSA drivers can return actual pointer in ring buffer */ |
| 1369 | #if defined(DSP_CAP_REALTIME) && 0 |
| 1370 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1371 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1372 | if (runtime->info & (SNDRV_PCM_INFO_BLOCK_TRANSFER|SNDRV_PCM_INFO_BATCH)) |
| 1373 | res &= ~DSP_CAP_REALTIME; |
| 1374 | } |
| 1375 | #endif |
| 1376 | return res; |
| 1377 | } |
| 1378 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1379 | static int snd_pcm_oss_get_caps(struct snd_pcm_oss_file *pcm_oss_file) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1380 | { |
| 1381 | int result, idx; |
| 1382 | |
| 1383 | result = DSP_CAP_TRIGGER | DSP_CAP_MMAP | DSP_CAP_DUPLEX | DSP_CAP_REALTIME; |
| 1384 | for (idx = 0; idx < 2; idx++) { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1385 | struct snd_pcm_substream *substream = pcm_oss_file->streams[idx]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1386 | result = snd_pcm_oss_get_caps1(substream, result); |
| 1387 | } |
| 1388 | result |= 0x0001; /* revision - same as SB AWE 64 */ |
| 1389 | return result; |
| 1390 | } |
| 1391 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1392 | static void snd_pcm_oss_simulate_fill(struct snd_pcm_substream *substream, snd_pcm_uframes_t hw_ptr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1393 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1394 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1395 | snd_pcm_uframes_t appl_ptr; |
| 1396 | appl_ptr = hw_ptr + runtime->buffer_size; |
| 1397 | appl_ptr %= runtime->boundary; |
| 1398 | runtime->control->appl_ptr = appl_ptr; |
| 1399 | } |
| 1400 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1401 | static int snd_pcm_oss_set_trigger(struct snd_pcm_oss_file *pcm_oss_file, int trigger) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1402 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1403 | struct snd_pcm_runtime *runtime; |
| 1404 | struct snd_pcm_substream *psubstream = NULL, *csubstream = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1405 | int err, cmd; |
| 1406 | |
| 1407 | #ifdef OSS_DEBUG |
| 1408 | printk("pcm_oss: trigger = 0x%x\n", trigger); |
| 1409 | #endif |
| 1410 | |
| 1411 | psubstream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK]; |
| 1412 | csubstream = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE]; |
| 1413 | |
| 1414 | if (psubstream) { |
| 1415 | if ((err = snd_pcm_oss_make_ready(psubstream)) < 0) |
| 1416 | return err; |
| 1417 | } |
| 1418 | if (csubstream) { |
| 1419 | if ((err = snd_pcm_oss_make_ready(csubstream)) < 0) |
| 1420 | return err; |
| 1421 | } |
| 1422 | if (psubstream) { |
| 1423 | runtime = psubstream->runtime; |
| 1424 | if (trigger & PCM_ENABLE_OUTPUT) { |
| 1425 | if (runtime->oss.trigger) |
| 1426 | goto _skip1; |
| 1427 | if (atomic_read(&psubstream->runtime->mmap_count)) |
| 1428 | snd_pcm_oss_simulate_fill(psubstream, runtime->hw_ptr_interrupt); |
| 1429 | runtime->oss.trigger = 1; |
| 1430 | runtime->start_threshold = 1; |
| 1431 | cmd = SNDRV_PCM_IOCTL_START; |
| 1432 | } else { |
| 1433 | if (!runtime->oss.trigger) |
| 1434 | goto _skip1; |
| 1435 | runtime->oss.trigger = 0; |
| 1436 | runtime->start_threshold = runtime->boundary; |
| 1437 | cmd = SNDRV_PCM_IOCTL_DROP; |
| 1438 | runtime->oss.prepare = 1; |
| 1439 | } |
| 1440 | err = snd_pcm_kernel_playback_ioctl(psubstream, cmd, NULL); |
| 1441 | if (err < 0) |
| 1442 | return err; |
| 1443 | } |
| 1444 | _skip1: |
| 1445 | if (csubstream) { |
| 1446 | runtime = csubstream->runtime; |
| 1447 | if (trigger & PCM_ENABLE_INPUT) { |
| 1448 | if (runtime->oss.trigger) |
| 1449 | goto _skip2; |
| 1450 | runtime->oss.trigger = 1; |
| 1451 | runtime->start_threshold = 1; |
| 1452 | cmd = SNDRV_PCM_IOCTL_START; |
| 1453 | } else { |
| 1454 | if (!runtime->oss.trigger) |
| 1455 | goto _skip2; |
| 1456 | runtime->oss.trigger = 0; |
| 1457 | runtime->start_threshold = runtime->boundary; |
| 1458 | cmd = SNDRV_PCM_IOCTL_DROP; |
| 1459 | runtime->oss.prepare = 1; |
| 1460 | } |
| 1461 | err = snd_pcm_kernel_capture_ioctl(csubstream, cmd, NULL); |
| 1462 | if (err < 0) |
| 1463 | return err; |
| 1464 | } |
| 1465 | _skip2: |
| 1466 | return 0; |
| 1467 | } |
| 1468 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1469 | static int snd_pcm_oss_get_trigger(struct snd_pcm_oss_file *pcm_oss_file) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1470 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1471 | struct snd_pcm_substream *psubstream = NULL, *csubstream = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1472 | int result = 0; |
| 1473 | |
| 1474 | psubstream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK]; |
| 1475 | csubstream = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE]; |
| 1476 | if (psubstream && psubstream->runtime && psubstream->runtime->oss.trigger) |
| 1477 | result |= PCM_ENABLE_OUTPUT; |
| 1478 | if (csubstream && csubstream->runtime && csubstream->runtime->oss.trigger) |
| 1479 | result |= PCM_ENABLE_INPUT; |
| 1480 | return result; |
| 1481 | } |
| 1482 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1483 | static int snd_pcm_oss_get_odelay(struct snd_pcm_oss_file *pcm_oss_file) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1484 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1485 | struct snd_pcm_substream *substream; |
| 1486 | struct snd_pcm_runtime *runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1487 | snd_pcm_sframes_t delay; |
| 1488 | int err; |
| 1489 | |
| 1490 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK]; |
| 1491 | if (substream == NULL) |
| 1492 | return -EINVAL; |
| 1493 | if ((err = snd_pcm_oss_make_ready(substream)) < 0) |
| 1494 | return err; |
| 1495 | runtime = substream->runtime; |
| 1496 | if (runtime->oss.params || runtime->oss.prepare) |
| 1497 | return 0; |
| 1498 | err = snd_pcm_kernel_playback_ioctl(substream, SNDRV_PCM_IOCTL_DELAY, &delay); |
| 1499 | if (err == -EPIPE) |
| 1500 | delay = 0; /* hack for broken OSS applications */ |
| 1501 | else if (err < 0) |
| 1502 | return err; |
| 1503 | return snd_pcm_oss_bytes(substream, delay); |
| 1504 | } |
| 1505 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1506 | static int snd_pcm_oss_get_ptr(struct snd_pcm_oss_file *pcm_oss_file, int stream, struct count_info __user * _info) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1507 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1508 | struct snd_pcm_substream *substream; |
| 1509 | struct snd_pcm_runtime *runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1510 | snd_pcm_sframes_t delay; |
| 1511 | int fixup; |
| 1512 | struct count_info info; |
| 1513 | int err; |
| 1514 | |
| 1515 | if (_info == NULL) |
| 1516 | return -EFAULT; |
| 1517 | substream = pcm_oss_file->streams[stream]; |
| 1518 | if (substream == NULL) |
| 1519 | return -EINVAL; |
| 1520 | if ((err = snd_pcm_oss_make_ready(substream)) < 0) |
| 1521 | return err; |
| 1522 | runtime = substream->runtime; |
| 1523 | if (runtime->oss.params || runtime->oss.prepare) { |
| 1524 | memset(&info, 0, sizeof(info)); |
| 1525 | if (copy_to_user(_info, &info, sizeof(info))) |
| 1526 | return -EFAULT; |
| 1527 | return 0; |
| 1528 | } |
| 1529 | if (stream == SNDRV_PCM_STREAM_PLAYBACK) { |
| 1530 | err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DELAY, &delay); |
| 1531 | if (err == -EPIPE || err == -ESTRPIPE || (! err && delay < 0)) { |
| 1532 | err = 0; |
| 1533 | delay = 0; |
| 1534 | fixup = 0; |
| 1535 | } else { |
| 1536 | fixup = runtime->oss.buffer_used; |
| 1537 | } |
| 1538 | } else { |
| 1539 | err = snd_pcm_oss_capture_position_fixup(substream, &delay); |
| 1540 | fixup = -runtime->oss.buffer_used; |
| 1541 | } |
| 1542 | if (err < 0) |
| 1543 | return err; |
| 1544 | info.ptr = snd_pcm_oss_bytes(substream, runtime->status->hw_ptr % runtime->buffer_size); |
| 1545 | if (atomic_read(&runtime->mmap_count)) { |
| 1546 | snd_pcm_sframes_t n; |
| 1547 | n = (delay = runtime->hw_ptr_interrupt) - runtime->oss.prev_hw_ptr_interrupt; |
| 1548 | if (n < 0) |
| 1549 | n += runtime->boundary; |
| 1550 | info.blocks = n / runtime->period_size; |
| 1551 | runtime->oss.prev_hw_ptr_interrupt = delay; |
| 1552 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) |
| 1553 | snd_pcm_oss_simulate_fill(substream, delay); |
| 1554 | info.bytes = snd_pcm_oss_bytes(substream, runtime->status->hw_ptr) & INT_MAX; |
| 1555 | } else { |
Jaroslav Kysela | 5ac0fab | 2005-05-31 16:59:39 +0200 | [diff] [blame] | 1556 | delay = snd_pcm_oss_bytes(substream, delay); |
Jaroslav Kysela | fb4bd0a | 2005-05-31 15:44:23 +0200 | [diff] [blame] | 1557 | if (stream == SNDRV_PCM_STREAM_PLAYBACK) { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1558 | struct snd_pcm_oss_setup *setup = substream->oss.setup; |
Takashi Iwai | 10f69f9 | 2005-09-08 13:48:34 +0200 | [diff] [blame] | 1559 | if (setup && setup->buggyptr) |
| 1560 | info.blocks = (runtime->oss.buffer_bytes - delay - fixup) / runtime->oss.period_bytes; |
| 1561 | else |
| 1562 | info.blocks = (delay + fixup) / runtime->oss.period_bytes; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1563 | info.bytes = (runtime->oss.bytes - delay) & INT_MAX; |
Jaroslav Kysela | fb4bd0a | 2005-05-31 15:44:23 +0200 | [diff] [blame] | 1564 | } else { |
Jaroslav Kysela | 5ac0fab | 2005-05-31 16:59:39 +0200 | [diff] [blame] | 1565 | delay += fixup; |
| 1566 | info.blocks = delay / runtime->oss.period_bytes; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1567 | info.bytes = (runtime->oss.bytes + delay) & INT_MAX; |
Jaroslav Kysela | fb4bd0a | 2005-05-31 15:44:23 +0200 | [diff] [blame] | 1568 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1569 | } |
| 1570 | if (copy_to_user(_info, &info, sizeof(info))) |
| 1571 | return -EFAULT; |
| 1572 | return 0; |
| 1573 | } |
| 1574 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1575 | static int snd_pcm_oss_get_space(struct snd_pcm_oss_file *pcm_oss_file, int stream, struct audio_buf_info __user *_info) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1576 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1577 | struct snd_pcm_substream *substream; |
| 1578 | struct snd_pcm_runtime *runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1579 | snd_pcm_sframes_t avail; |
| 1580 | int fixup; |
| 1581 | struct audio_buf_info info; |
| 1582 | int err; |
| 1583 | |
| 1584 | if (_info == NULL) |
| 1585 | return -EFAULT; |
| 1586 | substream = pcm_oss_file->streams[stream]; |
| 1587 | if (substream == NULL) |
| 1588 | return -EINVAL; |
| 1589 | runtime = substream->runtime; |
| 1590 | |
| 1591 | if (runtime->oss.params && |
| 1592 | (err = snd_pcm_oss_change_params(substream)) < 0) |
| 1593 | return err; |
| 1594 | |
| 1595 | info.fragsize = runtime->oss.period_bytes; |
| 1596 | info.fragstotal = runtime->periods; |
| 1597 | if (runtime->oss.prepare) { |
| 1598 | if (stream == SNDRV_PCM_STREAM_PLAYBACK) { |
| 1599 | info.bytes = runtime->oss.period_bytes * runtime->oss.periods; |
| 1600 | info.fragments = runtime->oss.periods; |
| 1601 | } else { |
| 1602 | info.bytes = 0; |
| 1603 | info.fragments = 0; |
| 1604 | } |
| 1605 | } else { |
| 1606 | if (stream == SNDRV_PCM_STREAM_PLAYBACK) { |
| 1607 | err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DELAY, &avail); |
| 1608 | if (err == -EPIPE || err == -ESTRPIPE || (! err && avail < 0)) { |
| 1609 | avail = runtime->buffer_size; |
| 1610 | err = 0; |
| 1611 | fixup = 0; |
| 1612 | } else { |
| 1613 | avail = runtime->buffer_size - avail; |
| 1614 | fixup = -runtime->oss.buffer_used; |
| 1615 | } |
| 1616 | } else { |
| 1617 | err = snd_pcm_oss_capture_position_fixup(substream, &avail); |
| 1618 | fixup = runtime->oss.buffer_used; |
| 1619 | } |
| 1620 | if (err < 0) |
| 1621 | return err; |
| 1622 | info.bytes = snd_pcm_oss_bytes(substream, avail) + fixup; |
| 1623 | info.fragments = info.bytes / runtime->oss.period_bytes; |
| 1624 | } |
| 1625 | |
| 1626 | #ifdef OSS_DEBUG |
| 1627 | printk("pcm_oss: space: bytes = %i, fragments = %i, fragstotal = %i, fragsize = %i\n", info.bytes, info.fragments, info.fragstotal, info.fragsize); |
| 1628 | #endif |
| 1629 | if (copy_to_user(_info, &info, sizeof(info))) |
| 1630 | return -EFAULT; |
| 1631 | return 0; |
| 1632 | } |
| 1633 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1634 | static int snd_pcm_oss_get_mapbuf(struct snd_pcm_oss_file *pcm_oss_file, int stream, struct buffmem_desc __user * _info) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1635 | { |
| 1636 | // it won't be probably implemented |
| 1637 | // snd_printd("TODO: snd_pcm_oss_get_mapbuf\n"); |
| 1638 | return -EINVAL; |
| 1639 | } |
| 1640 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1641 | static struct snd_pcm_oss_setup *snd_pcm_oss_look_for_setup(struct snd_pcm *pcm, int stream, const char *task_name) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1642 | { |
| 1643 | const char *ptr, *ptrl; |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1644 | struct snd_pcm_oss_setup *setup; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1645 | |
Ingo Molnar | 1a60d4c | 2006-01-16 16:29:08 +0100 | [diff] [blame^] | 1646 | mutex_lock(&pcm->streams[stream].oss.setup_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1647 | for (setup = pcm->streams[stream].oss.setup_list; setup; setup = setup->next) { |
| 1648 | if (!strcmp(setup->task_name, task_name)) { |
Ingo Molnar | 1a60d4c | 2006-01-16 16:29:08 +0100 | [diff] [blame^] | 1649 | mutex_unlock(&pcm->streams[stream].oss.setup_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1650 | return setup; |
| 1651 | } |
| 1652 | } |
| 1653 | ptr = ptrl = task_name; |
| 1654 | while (*ptr) { |
| 1655 | if (*ptr == '/') |
| 1656 | ptrl = ptr + 1; |
| 1657 | ptr++; |
| 1658 | } |
| 1659 | if (ptrl == task_name) { |
| 1660 | goto __not_found; |
| 1661 | return NULL; |
| 1662 | } |
| 1663 | for (setup = pcm->streams[stream].oss.setup_list; setup; setup = setup->next) { |
| 1664 | if (!strcmp(setup->task_name, ptrl)) { |
Ingo Molnar | 1a60d4c | 2006-01-16 16:29:08 +0100 | [diff] [blame^] | 1665 | mutex_unlock(&pcm->streams[stream].oss.setup_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1666 | return setup; |
| 1667 | } |
| 1668 | } |
| 1669 | __not_found: |
Ingo Molnar | 1a60d4c | 2006-01-16 16:29:08 +0100 | [diff] [blame^] | 1670 | mutex_unlock(&pcm->streams[stream].oss.setup_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1671 | return NULL; |
| 1672 | } |
| 1673 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1674 | static void snd_pcm_oss_init_substream(struct snd_pcm_substream *substream, |
| 1675 | struct snd_pcm_oss_setup *setup, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1676 | int minor) |
| 1677 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1678 | struct snd_pcm_runtime *runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1679 | |
| 1680 | substream->oss.oss = 1; |
| 1681 | substream->oss.setup = setup; |
| 1682 | runtime = substream->runtime; |
| 1683 | runtime->oss.params = 1; |
| 1684 | runtime->oss.trigger = 1; |
| 1685 | runtime->oss.rate = 8000; |
| 1686 | switch (SNDRV_MINOR_OSS_DEVICE(minor)) { |
| 1687 | case SNDRV_MINOR_OSS_PCM_8: |
| 1688 | runtime->oss.format = AFMT_U8; |
| 1689 | break; |
| 1690 | case SNDRV_MINOR_OSS_PCM_16: |
| 1691 | runtime->oss.format = AFMT_S16_LE; |
| 1692 | break; |
| 1693 | default: |
| 1694 | runtime->oss.format = AFMT_MU_LAW; |
| 1695 | } |
| 1696 | runtime->oss.channels = 1; |
| 1697 | runtime->oss.fragshift = 0; |
| 1698 | runtime->oss.maxfrags = 0; |
| 1699 | runtime->oss.subdivision = 0; |
| 1700 | } |
| 1701 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1702 | static void snd_pcm_oss_release_substream(struct snd_pcm_substream *substream) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1703 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1704 | struct snd_pcm_runtime *runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1705 | runtime = substream->runtime; |
| 1706 | vfree(runtime->oss.buffer); |
Jaroslav Kysela | 21a3479 | 2006-01-13 09:12:11 +0100 | [diff] [blame] | 1707 | #ifdef CONFIG_SND_PCM_OSS_PLUGINS |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1708 | snd_pcm_oss_plugin_clear(substream); |
Jaroslav Kysela | 21a3479 | 2006-01-13 09:12:11 +0100 | [diff] [blame] | 1709 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1710 | substream->oss.file = NULL; |
| 1711 | substream->oss.oss = 0; |
| 1712 | } |
| 1713 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1714 | static int snd_pcm_oss_release_file(struct snd_pcm_oss_file *pcm_oss_file) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1715 | { |
| 1716 | int cidx; |
| 1717 | snd_assert(pcm_oss_file != NULL, return -ENXIO); |
| 1718 | for (cidx = 0; cidx < 2; ++cidx) { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1719 | struct snd_pcm_substream *substream = pcm_oss_file->streams[cidx]; |
| 1720 | struct snd_pcm_runtime *runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1721 | if (substream == NULL) |
| 1722 | continue; |
| 1723 | runtime = substream->runtime; |
| 1724 | |
| 1725 | snd_pcm_stream_lock_irq(substream); |
| 1726 | if (snd_pcm_running(substream)) |
| 1727 | snd_pcm_stop(substream, SNDRV_PCM_STATE_SETUP); |
| 1728 | snd_pcm_stream_unlock_irq(substream); |
Karsten Wiese | 443feb8 | 2005-08-10 11:18:19 +0200 | [diff] [blame] | 1729 | if (substream->ffile != NULL) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1730 | if (substream->ops->hw_free != NULL) |
| 1731 | substream->ops->hw_free(substream); |
| 1732 | substream->ops->close(substream); |
Karsten Wiese | 443feb8 | 2005-08-10 11:18:19 +0200 | [diff] [blame] | 1733 | substream->ffile = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1734 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1735 | snd_pcm_oss_release_substream(substream); |
| 1736 | snd_pcm_release_substream(substream); |
| 1737 | } |
| 1738 | kfree(pcm_oss_file); |
| 1739 | return 0; |
| 1740 | } |
| 1741 | |
| 1742 | static int snd_pcm_oss_open_file(struct file *file, |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1743 | struct snd_pcm *pcm, |
| 1744 | struct snd_pcm_oss_file **rpcm_oss_file, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1745 | int minor, |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1746 | struct snd_pcm_oss_setup *psetup, |
| 1747 | struct snd_pcm_oss_setup *csetup) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1748 | { |
| 1749 | int err = 0; |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1750 | struct snd_pcm_oss_file *pcm_oss_file; |
| 1751 | struct snd_pcm_substream *psubstream = NULL, *csubstream = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1752 | unsigned int f_mode = file->f_mode; |
| 1753 | |
| 1754 | snd_assert(rpcm_oss_file != NULL, return -EINVAL); |
| 1755 | *rpcm_oss_file = NULL; |
| 1756 | |
Takashi Iwai | ca2c096 | 2005-09-09 14:20:23 +0200 | [diff] [blame] | 1757 | pcm_oss_file = kzalloc(sizeof(*pcm_oss_file), GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1758 | if (pcm_oss_file == NULL) |
| 1759 | return -ENOMEM; |
| 1760 | |
| 1761 | if ((f_mode & (FMODE_WRITE|FMODE_READ)) == (FMODE_WRITE|FMODE_READ) && |
| 1762 | (pcm->info_flags & SNDRV_PCM_INFO_HALF_DUPLEX)) |
| 1763 | f_mode = FMODE_WRITE; |
| 1764 | if ((f_mode & FMODE_WRITE) && !(psetup && psetup->disable)) { |
| 1765 | if ((err = snd_pcm_open_substream(pcm, SNDRV_PCM_STREAM_PLAYBACK, |
| 1766 | &psubstream)) < 0) { |
| 1767 | snd_pcm_oss_release_file(pcm_oss_file); |
| 1768 | return err; |
| 1769 | } |
| 1770 | pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK] = psubstream; |
| 1771 | } |
| 1772 | if ((f_mode & FMODE_READ) && !(csetup && csetup->disable)) { |
| 1773 | if ((err = snd_pcm_open_substream(pcm, SNDRV_PCM_STREAM_CAPTURE, |
| 1774 | &csubstream)) < 0) { |
| 1775 | if (!(f_mode & FMODE_WRITE) || err != -ENODEV) { |
| 1776 | snd_pcm_oss_release_file(pcm_oss_file); |
| 1777 | return err; |
| 1778 | } else { |
| 1779 | csubstream = NULL; |
| 1780 | } |
| 1781 | } |
| 1782 | pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE] = csubstream; |
| 1783 | } |
| 1784 | |
| 1785 | if (psubstream == NULL && csubstream == NULL) { |
| 1786 | snd_pcm_oss_release_file(pcm_oss_file); |
| 1787 | return -EINVAL; |
| 1788 | } |
| 1789 | if (psubstream != NULL) { |
| 1790 | psubstream->oss.file = pcm_oss_file; |
| 1791 | err = snd_pcm_hw_constraints_init(psubstream); |
| 1792 | if (err < 0) { |
| 1793 | snd_printd("snd_pcm_hw_constraint_init failed\n"); |
| 1794 | snd_pcm_oss_release_file(pcm_oss_file); |
| 1795 | return err; |
| 1796 | } |
| 1797 | if ((err = psubstream->ops->open(psubstream)) < 0) { |
| 1798 | snd_pcm_oss_release_file(pcm_oss_file); |
| 1799 | return err; |
| 1800 | } |
Karsten Wiese | 443feb8 | 2005-08-10 11:18:19 +0200 | [diff] [blame] | 1801 | psubstream->ffile = file; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1802 | err = snd_pcm_hw_constraints_complete(psubstream); |
| 1803 | if (err < 0) { |
| 1804 | snd_printd("snd_pcm_hw_constraint_complete failed\n"); |
| 1805 | snd_pcm_oss_release_file(pcm_oss_file); |
| 1806 | return err; |
| 1807 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1808 | snd_pcm_oss_init_substream(psubstream, psetup, minor); |
| 1809 | } |
| 1810 | if (csubstream != NULL) { |
| 1811 | csubstream->oss.file = pcm_oss_file; |
| 1812 | err = snd_pcm_hw_constraints_init(csubstream); |
| 1813 | if (err < 0) { |
| 1814 | snd_printd("snd_pcm_hw_constraint_init failed\n"); |
| 1815 | snd_pcm_oss_release_file(pcm_oss_file); |
| 1816 | return err; |
| 1817 | } |
| 1818 | if ((err = csubstream->ops->open(csubstream)) < 0) { |
| 1819 | snd_pcm_oss_release_file(pcm_oss_file); |
| 1820 | return err; |
| 1821 | } |
Karsten Wiese | 443feb8 | 2005-08-10 11:18:19 +0200 | [diff] [blame] | 1822 | csubstream->ffile = file; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1823 | err = snd_pcm_hw_constraints_complete(csubstream); |
| 1824 | if (err < 0) { |
| 1825 | snd_printd("snd_pcm_hw_constraint_complete failed\n"); |
| 1826 | snd_pcm_oss_release_file(pcm_oss_file); |
| 1827 | return err; |
| 1828 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1829 | snd_pcm_oss_init_substream(csubstream, csetup, minor); |
| 1830 | } |
| 1831 | |
| 1832 | file->private_data = pcm_oss_file; |
| 1833 | *rpcm_oss_file = pcm_oss_file; |
| 1834 | return 0; |
| 1835 | } |
| 1836 | |
| 1837 | |
Takashi Iwai | 93f2e37 | 2005-10-10 11:51:55 +0200 | [diff] [blame] | 1838 | static int snd_task_name(struct task_struct *task, char *name, size_t size) |
| 1839 | { |
| 1840 | unsigned int idx; |
| 1841 | |
| 1842 | snd_assert(task != NULL && name != NULL && size >= 2, return -EINVAL); |
| 1843 | for (idx = 0; idx < sizeof(task->comm) && idx + 1 < size; idx++) |
| 1844 | name[idx] = task->comm[idx]; |
| 1845 | name[idx] = '\0'; |
| 1846 | return 0; |
| 1847 | } |
| 1848 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1849 | static int snd_pcm_oss_open(struct inode *inode, struct file *file) |
| 1850 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1851 | int err; |
| 1852 | char task_name[32]; |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1853 | struct snd_pcm *pcm; |
| 1854 | struct snd_pcm_oss_file *pcm_oss_file; |
| 1855 | struct snd_pcm_oss_setup *psetup = NULL, *csetup = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1856 | int nonblock; |
| 1857 | wait_queue_t wait; |
| 1858 | |
Clemens Ladisch | f87135f | 2005-11-20 14:06:59 +0100 | [diff] [blame] | 1859 | pcm = snd_lookup_oss_minor_data(iminor(inode), |
| 1860 | SNDRV_OSS_DEVICE_TYPE_PCM); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1861 | if (pcm == NULL) { |
| 1862 | err = -ENODEV; |
| 1863 | goto __error1; |
| 1864 | } |
| 1865 | err = snd_card_file_add(pcm->card, file); |
| 1866 | if (err < 0) |
| 1867 | goto __error1; |
| 1868 | if (!try_module_get(pcm->card->module)) { |
| 1869 | err = -EFAULT; |
| 1870 | goto __error2; |
| 1871 | } |
| 1872 | if (snd_task_name(current, task_name, sizeof(task_name)) < 0) { |
| 1873 | err = -EFAULT; |
| 1874 | goto __error; |
| 1875 | } |
| 1876 | if (file->f_mode & FMODE_WRITE) |
| 1877 | psetup = snd_pcm_oss_look_for_setup(pcm, SNDRV_PCM_STREAM_PLAYBACK, task_name); |
| 1878 | if (file->f_mode & FMODE_READ) |
| 1879 | csetup = snd_pcm_oss_look_for_setup(pcm, SNDRV_PCM_STREAM_CAPTURE, task_name); |
| 1880 | |
| 1881 | nonblock = !!(file->f_flags & O_NONBLOCK); |
| 1882 | if (psetup && !psetup->disable) { |
| 1883 | if (psetup->nonblock) |
| 1884 | nonblock = 1; |
| 1885 | else if (psetup->block) |
| 1886 | nonblock = 0; |
| 1887 | } else if (csetup && !csetup->disable) { |
| 1888 | if (csetup->nonblock) |
| 1889 | nonblock = 1; |
| 1890 | else if (csetup->block) |
| 1891 | nonblock = 0; |
| 1892 | } |
| 1893 | if (!nonblock) |
| 1894 | nonblock = nonblock_open; |
| 1895 | |
| 1896 | init_waitqueue_entry(&wait, current); |
| 1897 | add_wait_queue(&pcm->open_wait, &wait); |
Ingo Molnar | 1a60d4c | 2006-01-16 16:29:08 +0100 | [diff] [blame^] | 1898 | mutex_lock(&pcm->open_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1899 | while (1) { |
| 1900 | err = snd_pcm_oss_open_file(file, pcm, &pcm_oss_file, |
Clemens Ladisch | f87135f | 2005-11-20 14:06:59 +0100 | [diff] [blame] | 1901 | iminor(inode), psetup, csetup); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1902 | if (err >= 0) |
| 1903 | break; |
| 1904 | if (err == -EAGAIN) { |
| 1905 | if (nonblock) { |
| 1906 | err = -EBUSY; |
| 1907 | break; |
| 1908 | } |
| 1909 | } else |
| 1910 | break; |
| 1911 | set_current_state(TASK_INTERRUPTIBLE); |
Ingo Molnar | 1a60d4c | 2006-01-16 16:29:08 +0100 | [diff] [blame^] | 1912 | mutex_unlock(&pcm->open_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1913 | schedule(); |
Ingo Molnar | 1a60d4c | 2006-01-16 16:29:08 +0100 | [diff] [blame^] | 1914 | mutex_lock(&pcm->open_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1915 | if (signal_pending(current)) { |
| 1916 | err = -ERESTARTSYS; |
| 1917 | break; |
| 1918 | } |
| 1919 | } |
| 1920 | remove_wait_queue(&pcm->open_wait, &wait); |
Ingo Molnar | 1a60d4c | 2006-01-16 16:29:08 +0100 | [diff] [blame^] | 1921 | mutex_unlock(&pcm->open_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1922 | if (err < 0) |
| 1923 | goto __error; |
| 1924 | return err; |
| 1925 | |
| 1926 | __error: |
| 1927 | module_put(pcm->card->module); |
| 1928 | __error2: |
| 1929 | snd_card_file_remove(pcm->card, file); |
| 1930 | __error1: |
| 1931 | return err; |
| 1932 | } |
| 1933 | |
| 1934 | static int snd_pcm_oss_release(struct inode *inode, struct file *file) |
| 1935 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1936 | struct snd_pcm *pcm; |
| 1937 | struct snd_pcm_substream *substream; |
| 1938 | struct snd_pcm_oss_file *pcm_oss_file; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1939 | |
| 1940 | pcm_oss_file = file->private_data; |
| 1941 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK]; |
| 1942 | if (substream == NULL) |
| 1943 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE]; |
| 1944 | snd_assert(substream != NULL, return -ENXIO); |
| 1945 | pcm = substream->pcm; |
| 1946 | snd_pcm_oss_sync(pcm_oss_file); |
Ingo Molnar | 1a60d4c | 2006-01-16 16:29:08 +0100 | [diff] [blame^] | 1947 | mutex_lock(&pcm->open_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1948 | snd_pcm_oss_release_file(pcm_oss_file); |
Ingo Molnar | 1a60d4c | 2006-01-16 16:29:08 +0100 | [diff] [blame^] | 1949 | mutex_unlock(&pcm->open_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1950 | wake_up(&pcm->open_wait); |
| 1951 | module_put(pcm->card->module); |
| 1952 | snd_card_file_remove(pcm->card, file); |
| 1953 | return 0; |
| 1954 | } |
| 1955 | |
| 1956 | static long snd_pcm_oss_ioctl(struct file *file, unsigned int cmd, unsigned long arg) |
| 1957 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1958 | struct snd_pcm_oss_file *pcm_oss_file; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1959 | int __user *p = (int __user *)arg; |
| 1960 | int res; |
| 1961 | |
| 1962 | pcm_oss_file = file->private_data; |
| 1963 | if (cmd == OSS_GETVERSION) |
| 1964 | return put_user(SNDRV_OSS_VERSION, p); |
| 1965 | if (cmd == OSS_ALSAEMULVER) |
| 1966 | return put_user(1, p); |
| 1967 | #if defined(CONFIG_SND_MIXER_OSS) || (defined(MODULE) && defined(CONFIG_SND_MIXER_OSS_MODULE)) |
| 1968 | if (((cmd >> 8) & 0xff) == 'M') { /* mixer ioctl - for OSS compatibility */ |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1969 | struct snd_pcm_substream *substream; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1970 | int idx; |
| 1971 | for (idx = 0; idx < 2; ++idx) { |
| 1972 | substream = pcm_oss_file->streams[idx]; |
| 1973 | if (substream != NULL) |
| 1974 | break; |
| 1975 | } |
| 1976 | snd_assert(substream != NULL, return -ENXIO); |
| 1977 | return snd_mixer_oss_ioctl_card(substream->pcm->card, cmd, arg); |
| 1978 | } |
| 1979 | #endif |
| 1980 | if (((cmd >> 8) & 0xff) != 'P') |
| 1981 | return -EINVAL; |
| 1982 | #ifdef OSS_DEBUG |
| 1983 | printk("pcm_oss: ioctl = 0x%x\n", cmd); |
| 1984 | #endif |
| 1985 | switch (cmd) { |
| 1986 | case SNDCTL_DSP_RESET: |
| 1987 | return snd_pcm_oss_reset(pcm_oss_file); |
| 1988 | case SNDCTL_DSP_SYNC: |
| 1989 | return snd_pcm_oss_sync(pcm_oss_file); |
| 1990 | case SNDCTL_DSP_SPEED: |
| 1991 | if (get_user(res, p)) |
| 1992 | return -EFAULT; |
| 1993 | if ((res = snd_pcm_oss_set_rate(pcm_oss_file, res))<0) |
| 1994 | return res; |
| 1995 | return put_user(res, p); |
| 1996 | case SOUND_PCM_READ_RATE: |
| 1997 | res = snd_pcm_oss_get_rate(pcm_oss_file); |
| 1998 | if (res < 0) |
| 1999 | return res; |
| 2000 | return put_user(res, p); |
| 2001 | case SNDCTL_DSP_STEREO: |
| 2002 | if (get_user(res, p)) |
| 2003 | return -EFAULT; |
| 2004 | res = res > 0 ? 2 : 1; |
| 2005 | if ((res = snd_pcm_oss_set_channels(pcm_oss_file, res)) < 0) |
| 2006 | return res; |
| 2007 | return put_user(--res, p); |
| 2008 | case SNDCTL_DSP_GETBLKSIZE: |
| 2009 | res = snd_pcm_oss_get_block_size(pcm_oss_file); |
| 2010 | if (res < 0) |
| 2011 | return res; |
| 2012 | return put_user(res, p); |
| 2013 | case SNDCTL_DSP_SETFMT: |
| 2014 | if (get_user(res, p)) |
| 2015 | return -EFAULT; |
| 2016 | res = snd_pcm_oss_set_format(pcm_oss_file, res); |
| 2017 | if (res < 0) |
| 2018 | return res; |
| 2019 | return put_user(res, p); |
| 2020 | case SOUND_PCM_READ_BITS: |
| 2021 | res = snd_pcm_oss_get_format(pcm_oss_file); |
| 2022 | if (res < 0) |
| 2023 | return res; |
| 2024 | return put_user(res, p); |
| 2025 | case SNDCTL_DSP_CHANNELS: |
| 2026 | if (get_user(res, p)) |
| 2027 | return -EFAULT; |
| 2028 | res = snd_pcm_oss_set_channels(pcm_oss_file, res); |
| 2029 | if (res < 0) |
| 2030 | return res; |
| 2031 | return put_user(res, p); |
| 2032 | case SOUND_PCM_READ_CHANNELS: |
| 2033 | res = snd_pcm_oss_get_channels(pcm_oss_file); |
| 2034 | if (res < 0) |
| 2035 | return res; |
| 2036 | return put_user(res, p); |
| 2037 | case SOUND_PCM_WRITE_FILTER: |
| 2038 | case SOUND_PCM_READ_FILTER: |
| 2039 | return -EIO; |
| 2040 | case SNDCTL_DSP_POST: |
| 2041 | return snd_pcm_oss_post(pcm_oss_file); |
| 2042 | case SNDCTL_DSP_SUBDIVIDE: |
| 2043 | if (get_user(res, p)) |
| 2044 | return -EFAULT; |
| 2045 | res = snd_pcm_oss_set_subdivide(pcm_oss_file, res); |
| 2046 | if (res < 0) |
| 2047 | return res; |
| 2048 | return put_user(res, p); |
| 2049 | case SNDCTL_DSP_SETFRAGMENT: |
| 2050 | if (get_user(res, p)) |
| 2051 | return -EFAULT; |
| 2052 | return snd_pcm_oss_set_fragment(pcm_oss_file, res); |
| 2053 | case SNDCTL_DSP_GETFMTS: |
| 2054 | res = snd_pcm_oss_get_formats(pcm_oss_file); |
| 2055 | if (res < 0) |
| 2056 | return res; |
| 2057 | return put_user(res, p); |
| 2058 | case SNDCTL_DSP_GETOSPACE: |
| 2059 | case SNDCTL_DSP_GETISPACE: |
| 2060 | return snd_pcm_oss_get_space(pcm_oss_file, |
| 2061 | cmd == SNDCTL_DSP_GETISPACE ? |
| 2062 | SNDRV_PCM_STREAM_CAPTURE : SNDRV_PCM_STREAM_PLAYBACK, |
| 2063 | (struct audio_buf_info __user *) arg); |
| 2064 | case SNDCTL_DSP_NONBLOCK: |
| 2065 | return snd_pcm_oss_nonblock(file); |
| 2066 | case SNDCTL_DSP_GETCAPS: |
| 2067 | res = snd_pcm_oss_get_caps(pcm_oss_file); |
| 2068 | if (res < 0) |
| 2069 | return res; |
| 2070 | return put_user(res, p); |
| 2071 | case SNDCTL_DSP_GETTRIGGER: |
| 2072 | res = snd_pcm_oss_get_trigger(pcm_oss_file); |
| 2073 | if (res < 0) |
| 2074 | return res; |
| 2075 | return put_user(res, p); |
| 2076 | case SNDCTL_DSP_SETTRIGGER: |
| 2077 | if (get_user(res, p)) |
| 2078 | return -EFAULT; |
| 2079 | return snd_pcm_oss_set_trigger(pcm_oss_file, res); |
| 2080 | case SNDCTL_DSP_GETIPTR: |
| 2081 | case SNDCTL_DSP_GETOPTR: |
| 2082 | return snd_pcm_oss_get_ptr(pcm_oss_file, |
| 2083 | cmd == SNDCTL_DSP_GETIPTR ? |
| 2084 | SNDRV_PCM_STREAM_CAPTURE : SNDRV_PCM_STREAM_PLAYBACK, |
| 2085 | (struct count_info __user *) arg); |
| 2086 | case SNDCTL_DSP_MAPINBUF: |
| 2087 | case SNDCTL_DSP_MAPOUTBUF: |
| 2088 | return snd_pcm_oss_get_mapbuf(pcm_oss_file, |
| 2089 | cmd == SNDCTL_DSP_MAPINBUF ? |
| 2090 | SNDRV_PCM_STREAM_CAPTURE : SNDRV_PCM_STREAM_PLAYBACK, |
| 2091 | (struct buffmem_desc __user *) arg); |
| 2092 | case SNDCTL_DSP_SETSYNCRO: |
| 2093 | /* stop DMA now.. */ |
| 2094 | return 0; |
| 2095 | case SNDCTL_DSP_SETDUPLEX: |
| 2096 | if (snd_pcm_oss_get_caps(pcm_oss_file) & DSP_CAP_DUPLEX) |
| 2097 | return 0; |
| 2098 | return -EIO; |
| 2099 | case SNDCTL_DSP_GETODELAY: |
| 2100 | res = snd_pcm_oss_get_odelay(pcm_oss_file); |
| 2101 | if (res < 0) { |
| 2102 | /* it's for sure, some broken apps don't check for error codes */ |
| 2103 | put_user(0, p); |
| 2104 | return res; |
| 2105 | } |
| 2106 | return put_user(res, p); |
| 2107 | case SNDCTL_DSP_PROFILE: |
| 2108 | return 0; /* silently ignore */ |
| 2109 | default: |
| 2110 | snd_printd("pcm_oss: unknown command = 0x%x\n", cmd); |
| 2111 | } |
| 2112 | return -EINVAL; |
| 2113 | } |
| 2114 | |
| 2115 | #ifdef CONFIG_COMPAT |
| 2116 | /* all compatible */ |
| 2117 | #define snd_pcm_oss_ioctl_compat snd_pcm_oss_ioctl |
| 2118 | #else |
| 2119 | #define snd_pcm_oss_ioctl_compat NULL |
| 2120 | #endif |
| 2121 | |
| 2122 | static ssize_t snd_pcm_oss_read(struct file *file, char __user *buf, size_t count, loff_t *offset) |
| 2123 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2124 | struct snd_pcm_oss_file *pcm_oss_file; |
| 2125 | struct snd_pcm_substream *substream; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2126 | |
| 2127 | pcm_oss_file = file->private_data; |
| 2128 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE]; |
| 2129 | if (substream == NULL) |
| 2130 | return -ENXIO; |
| 2131 | #ifndef OSS_DEBUG |
| 2132 | return snd_pcm_oss_read1(substream, buf, count); |
| 2133 | #else |
| 2134 | { |
| 2135 | ssize_t res = snd_pcm_oss_read1(substream, buf, count); |
| 2136 | printk("pcm_oss: read %li bytes (returned %li bytes)\n", (long)count, (long)res); |
| 2137 | return res; |
| 2138 | } |
| 2139 | #endif |
| 2140 | } |
| 2141 | |
| 2142 | static ssize_t snd_pcm_oss_write(struct file *file, const char __user *buf, size_t count, loff_t *offset) |
| 2143 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2144 | struct snd_pcm_oss_file *pcm_oss_file; |
| 2145 | struct snd_pcm_substream *substream; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2146 | long result; |
| 2147 | |
| 2148 | pcm_oss_file = file->private_data; |
| 2149 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK]; |
| 2150 | if (substream == NULL) |
| 2151 | return -ENXIO; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2152 | result = snd_pcm_oss_write1(substream, buf, count); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2153 | #ifdef OSS_DEBUG |
| 2154 | printk("pcm_oss: write %li bytes (wrote %li bytes)\n", (long)count, (long)result); |
| 2155 | #endif |
| 2156 | return result; |
| 2157 | } |
| 2158 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2159 | static int snd_pcm_oss_playback_ready(struct snd_pcm_substream *substream) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2160 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2161 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2162 | if (atomic_read(&runtime->mmap_count)) |
| 2163 | return runtime->oss.prev_hw_ptr_interrupt != runtime->hw_ptr_interrupt; |
| 2164 | else |
| 2165 | return snd_pcm_playback_avail(runtime) >= runtime->oss.period_frames; |
| 2166 | } |
| 2167 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2168 | static int snd_pcm_oss_capture_ready(struct snd_pcm_substream *substream) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2169 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2170 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2171 | if (atomic_read(&runtime->mmap_count)) |
| 2172 | return runtime->oss.prev_hw_ptr_interrupt != runtime->hw_ptr_interrupt; |
| 2173 | else |
| 2174 | return snd_pcm_capture_avail(runtime) >= runtime->oss.period_frames; |
| 2175 | } |
| 2176 | |
| 2177 | static unsigned int snd_pcm_oss_poll(struct file *file, poll_table * wait) |
| 2178 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2179 | struct snd_pcm_oss_file *pcm_oss_file; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2180 | unsigned int mask; |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2181 | struct snd_pcm_substream *psubstream = NULL, *csubstream = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2182 | |
| 2183 | pcm_oss_file = file->private_data; |
| 2184 | |
| 2185 | psubstream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK]; |
| 2186 | csubstream = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE]; |
| 2187 | |
| 2188 | mask = 0; |
| 2189 | if (psubstream != NULL) { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2190 | struct snd_pcm_runtime *runtime = psubstream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2191 | poll_wait(file, &runtime->sleep, wait); |
| 2192 | snd_pcm_stream_lock_irq(psubstream); |
| 2193 | if (runtime->status->state != SNDRV_PCM_STATE_DRAINING && |
| 2194 | (runtime->status->state != SNDRV_PCM_STATE_RUNNING || |
| 2195 | snd_pcm_oss_playback_ready(psubstream))) |
| 2196 | mask |= POLLOUT | POLLWRNORM; |
| 2197 | snd_pcm_stream_unlock_irq(psubstream); |
| 2198 | } |
| 2199 | if (csubstream != NULL) { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2200 | struct snd_pcm_runtime *runtime = csubstream->runtime; |
| 2201 | snd_pcm_state_t ostate; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2202 | poll_wait(file, &runtime->sleep, wait); |
| 2203 | snd_pcm_stream_lock_irq(csubstream); |
| 2204 | if ((ostate = runtime->status->state) != SNDRV_PCM_STATE_RUNNING || |
| 2205 | snd_pcm_oss_capture_ready(csubstream)) |
| 2206 | mask |= POLLIN | POLLRDNORM; |
| 2207 | snd_pcm_stream_unlock_irq(csubstream); |
| 2208 | if (ostate != SNDRV_PCM_STATE_RUNNING && runtime->oss.trigger) { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2209 | struct snd_pcm_oss_file ofile; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2210 | memset(&ofile, 0, sizeof(ofile)); |
| 2211 | ofile.streams[SNDRV_PCM_STREAM_CAPTURE] = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE]; |
| 2212 | runtime->oss.trigger = 0; |
| 2213 | snd_pcm_oss_set_trigger(&ofile, PCM_ENABLE_INPUT); |
| 2214 | } |
| 2215 | } |
| 2216 | |
| 2217 | return mask; |
| 2218 | } |
| 2219 | |
| 2220 | static int snd_pcm_oss_mmap(struct file *file, struct vm_area_struct *area) |
| 2221 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2222 | struct snd_pcm_oss_file *pcm_oss_file; |
| 2223 | struct snd_pcm_substream *substream = NULL; |
| 2224 | struct snd_pcm_runtime *runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2225 | int err; |
| 2226 | |
| 2227 | #ifdef OSS_DEBUG |
| 2228 | printk("pcm_oss: mmap begin\n"); |
| 2229 | #endif |
| 2230 | pcm_oss_file = file->private_data; |
| 2231 | switch ((area->vm_flags & (VM_READ | VM_WRITE))) { |
| 2232 | case VM_READ | VM_WRITE: |
| 2233 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK]; |
| 2234 | if (substream) |
| 2235 | break; |
| 2236 | /* Fall through */ |
| 2237 | case VM_READ: |
| 2238 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE]; |
| 2239 | break; |
| 2240 | case VM_WRITE: |
| 2241 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK]; |
| 2242 | break; |
| 2243 | default: |
| 2244 | return -EINVAL; |
| 2245 | } |
| 2246 | /* set VM_READ access as well to fix memset() routines that do |
| 2247 | reads before writes (to improve performance) */ |
| 2248 | area->vm_flags |= VM_READ; |
| 2249 | if (substream == NULL) |
| 2250 | return -ENXIO; |
| 2251 | runtime = substream->runtime; |
| 2252 | if (!(runtime->info & SNDRV_PCM_INFO_MMAP_VALID)) |
| 2253 | return -EIO; |
| 2254 | if (runtime->info & SNDRV_PCM_INFO_INTERLEAVED) |
| 2255 | runtime->access = SNDRV_PCM_ACCESS_MMAP_INTERLEAVED; |
| 2256 | else |
| 2257 | return -EIO; |
| 2258 | |
| 2259 | if (runtime->oss.params) { |
| 2260 | if ((err = snd_pcm_oss_change_params(substream)) < 0) |
| 2261 | return err; |
| 2262 | } |
Jaroslav Kysela | 21a3479 | 2006-01-13 09:12:11 +0100 | [diff] [blame] | 2263 | #ifdef CONFIG_SND_PCM_OSS_PLUGINS |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2264 | if (runtime->oss.plugin_first != NULL) |
| 2265 | return -EIO; |
Jaroslav Kysela | 21a3479 | 2006-01-13 09:12:11 +0100 | [diff] [blame] | 2266 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2267 | |
| 2268 | if (area->vm_pgoff != 0) |
| 2269 | return -EINVAL; |
| 2270 | |
| 2271 | err = snd_pcm_mmap_data(substream, file, area); |
| 2272 | if (err < 0) |
| 2273 | return err; |
| 2274 | runtime->oss.mmap_bytes = area->vm_end - area->vm_start; |
| 2275 | runtime->silence_threshold = 0; |
| 2276 | runtime->silence_size = 0; |
| 2277 | #ifdef OSS_DEBUG |
| 2278 | printk("pcm_oss: mmap ok, bytes = 0x%x\n", runtime->oss.mmap_bytes); |
| 2279 | #endif |
| 2280 | /* In mmap mode we never stop */ |
| 2281 | runtime->stop_threshold = runtime->boundary; |
| 2282 | |
| 2283 | return 0; |
| 2284 | } |
| 2285 | |
Takashi Iwai | 04f141a | 2005-12-01 10:43:51 +0100 | [diff] [blame] | 2286 | #ifdef CONFIG_PROC_FS |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2287 | /* |
| 2288 | * /proc interface |
| 2289 | */ |
| 2290 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2291 | static void snd_pcm_oss_proc_read(struct snd_info_entry *entry, |
| 2292 | struct snd_info_buffer *buffer) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2293 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2294 | struct snd_pcm_str *pstr = entry->private_data; |
| 2295 | struct snd_pcm_oss_setup *setup = pstr->oss.setup_list; |
Ingo Molnar | 1a60d4c | 2006-01-16 16:29:08 +0100 | [diff] [blame^] | 2296 | mutex_lock(&pstr->oss.setup_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2297 | while (setup) { |
| 2298 | snd_iprintf(buffer, "%s %u %u%s%s%s%s%s%s\n", |
| 2299 | setup->task_name, |
| 2300 | setup->periods, |
| 2301 | setup->period_size, |
| 2302 | setup->disable ? " disable" : "", |
| 2303 | setup->direct ? " direct" : "", |
| 2304 | setup->block ? " block" : "", |
| 2305 | setup->nonblock ? " non-block" : "", |
| 2306 | setup->partialfrag ? " partial-frag" : "", |
| 2307 | setup->nosilence ? " no-silence" : ""); |
| 2308 | setup = setup->next; |
| 2309 | } |
Ingo Molnar | 1a60d4c | 2006-01-16 16:29:08 +0100 | [diff] [blame^] | 2310 | mutex_unlock(&pstr->oss.setup_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2311 | } |
| 2312 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2313 | static void snd_pcm_oss_proc_free_setup_list(struct snd_pcm_str * pstr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2314 | { |
| 2315 | unsigned int idx; |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2316 | struct snd_pcm_substream *substream; |
| 2317 | struct snd_pcm_oss_setup *setup, *setupn; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2318 | |
| 2319 | for (idx = 0, substream = pstr->substream; |
| 2320 | idx < pstr->substream_count; idx++, substream = substream->next) |
| 2321 | substream->oss.setup = NULL; |
| 2322 | for (setup = pstr->oss.setup_list, pstr->oss.setup_list = NULL; |
| 2323 | setup; setup = setupn) { |
| 2324 | setupn = setup->next; |
| 2325 | kfree(setup->task_name); |
| 2326 | kfree(setup); |
| 2327 | } |
| 2328 | pstr->oss.setup_list = NULL; |
| 2329 | } |
| 2330 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2331 | static void snd_pcm_oss_proc_write(struct snd_info_entry *entry, |
| 2332 | struct snd_info_buffer *buffer) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2333 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2334 | struct snd_pcm_str *pstr = entry->private_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2335 | char line[128], str[32], task_name[32], *ptr; |
| 2336 | int idx1; |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2337 | struct snd_pcm_oss_setup *setup, *setup1, template; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2338 | |
| 2339 | while (!snd_info_get_line(buffer, line, sizeof(line))) { |
Ingo Molnar | 1a60d4c | 2006-01-16 16:29:08 +0100 | [diff] [blame^] | 2340 | mutex_lock(&pstr->oss.setup_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2341 | memset(&template, 0, sizeof(template)); |
| 2342 | ptr = snd_info_get_str(task_name, line, sizeof(task_name)); |
| 2343 | if (!strcmp(task_name, "clear") || !strcmp(task_name, "erase")) { |
| 2344 | snd_pcm_oss_proc_free_setup_list(pstr); |
Ingo Molnar | 1a60d4c | 2006-01-16 16:29:08 +0100 | [diff] [blame^] | 2345 | mutex_unlock(&pstr->oss.setup_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2346 | continue; |
| 2347 | } |
| 2348 | for (setup = pstr->oss.setup_list; setup; setup = setup->next) { |
| 2349 | if (!strcmp(setup->task_name, task_name)) { |
| 2350 | template = *setup; |
| 2351 | break; |
| 2352 | } |
| 2353 | } |
| 2354 | ptr = snd_info_get_str(str, ptr, sizeof(str)); |
| 2355 | template.periods = simple_strtoul(str, NULL, 10); |
| 2356 | ptr = snd_info_get_str(str, ptr, sizeof(str)); |
| 2357 | template.period_size = simple_strtoul(str, NULL, 10); |
| 2358 | for (idx1 = 31; idx1 >= 0; idx1--) |
| 2359 | if (template.period_size & (1 << idx1)) |
| 2360 | break; |
| 2361 | for (idx1--; idx1 >= 0; idx1--) |
| 2362 | template.period_size &= ~(1 << idx1); |
| 2363 | do { |
| 2364 | ptr = snd_info_get_str(str, ptr, sizeof(str)); |
| 2365 | if (!strcmp(str, "disable")) { |
| 2366 | template.disable = 1; |
| 2367 | } else if (!strcmp(str, "direct")) { |
| 2368 | template.direct = 1; |
| 2369 | } else if (!strcmp(str, "block")) { |
| 2370 | template.block = 1; |
| 2371 | } else if (!strcmp(str, "non-block")) { |
| 2372 | template.nonblock = 1; |
| 2373 | } else if (!strcmp(str, "partial-frag")) { |
| 2374 | template.partialfrag = 1; |
| 2375 | } else if (!strcmp(str, "no-silence")) { |
| 2376 | template.nosilence = 1; |
Takashi Iwai | 10f69f9 | 2005-09-08 13:48:34 +0200 | [diff] [blame] | 2377 | } else if (!strcmp(str, "buggy-ptr")) { |
| 2378 | template.buggyptr = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2379 | } |
| 2380 | } while (*str); |
| 2381 | if (setup == NULL) { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2382 | setup = kmalloc(sizeof(struct snd_pcm_oss_setup), GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2383 | if (setup) { |
| 2384 | if (pstr->oss.setup_list == NULL) { |
| 2385 | pstr->oss.setup_list = setup; |
| 2386 | } else { |
| 2387 | for (setup1 = pstr->oss.setup_list; setup1->next; setup1 = setup1->next); |
| 2388 | setup1->next = setup; |
| 2389 | } |
Paulo Marques | 543537b | 2005-06-23 00:09:02 -0700 | [diff] [blame] | 2390 | template.task_name = kstrdup(task_name, GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2391 | } else { |
| 2392 | buffer->error = -ENOMEM; |
| 2393 | } |
| 2394 | } |
| 2395 | if (setup) |
| 2396 | *setup = template; |
Ingo Molnar | 1a60d4c | 2006-01-16 16:29:08 +0100 | [diff] [blame^] | 2397 | mutex_unlock(&pstr->oss.setup_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2398 | } |
| 2399 | } |
| 2400 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2401 | static void snd_pcm_oss_proc_init(struct snd_pcm *pcm) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2402 | { |
| 2403 | int stream; |
| 2404 | for (stream = 0; stream < 2; ++stream) { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2405 | struct snd_info_entry *entry; |
| 2406 | struct snd_pcm_str *pstr = &pcm->streams[stream]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2407 | if (pstr->substream_count == 0) |
| 2408 | continue; |
| 2409 | if ((entry = snd_info_create_card_entry(pcm->card, "oss", pstr->proc_root)) != NULL) { |
| 2410 | entry->content = SNDRV_INFO_CONTENT_TEXT; |
| 2411 | entry->mode = S_IFREG | S_IRUGO | S_IWUSR; |
| 2412 | entry->c.text.read_size = 8192; |
| 2413 | entry->c.text.read = snd_pcm_oss_proc_read; |
| 2414 | entry->c.text.write_size = 8192; |
| 2415 | entry->c.text.write = snd_pcm_oss_proc_write; |
| 2416 | entry->private_data = pstr; |
| 2417 | if (snd_info_register(entry) < 0) { |
| 2418 | snd_info_free_entry(entry); |
| 2419 | entry = NULL; |
| 2420 | } |
| 2421 | } |
| 2422 | pstr->oss.proc_entry = entry; |
| 2423 | } |
| 2424 | } |
| 2425 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2426 | static void snd_pcm_oss_proc_done(struct snd_pcm *pcm) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2427 | { |
| 2428 | int stream; |
| 2429 | for (stream = 0; stream < 2; ++stream) { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2430 | struct snd_pcm_str *pstr = &pcm->streams[stream]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2431 | if (pstr->oss.proc_entry) { |
| 2432 | snd_info_unregister(pstr->oss.proc_entry); |
| 2433 | pstr->oss.proc_entry = NULL; |
| 2434 | snd_pcm_oss_proc_free_setup_list(pstr); |
| 2435 | } |
| 2436 | } |
| 2437 | } |
Takashi Iwai | 04f141a | 2005-12-01 10:43:51 +0100 | [diff] [blame] | 2438 | #else /* !CONFIG_PROC_FS */ |
| 2439 | #define snd_pcm_oss_proc_init(pcm) |
| 2440 | #define snd_pcm_oss_proc_done(pcm) |
| 2441 | #endif /* CONFIG_PROC_FS */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2442 | |
| 2443 | /* |
| 2444 | * ENTRY functions |
| 2445 | */ |
| 2446 | |
| 2447 | static struct file_operations snd_pcm_oss_f_reg = |
| 2448 | { |
| 2449 | .owner = THIS_MODULE, |
| 2450 | .read = snd_pcm_oss_read, |
| 2451 | .write = snd_pcm_oss_write, |
| 2452 | .open = snd_pcm_oss_open, |
| 2453 | .release = snd_pcm_oss_release, |
| 2454 | .poll = snd_pcm_oss_poll, |
| 2455 | .unlocked_ioctl = snd_pcm_oss_ioctl, |
| 2456 | .compat_ioctl = snd_pcm_oss_ioctl_compat, |
| 2457 | .mmap = snd_pcm_oss_mmap, |
| 2458 | }; |
| 2459 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2460 | static void register_oss_dsp(struct snd_pcm *pcm, int index) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2461 | { |
| 2462 | char name[128]; |
| 2463 | sprintf(name, "dsp%i%i", pcm->card->number, pcm->device); |
| 2464 | if (snd_register_oss_device(SNDRV_OSS_DEVICE_TYPE_PCM, |
Clemens Ladisch | 2af677f | 2005-11-20 14:03:48 +0100 | [diff] [blame] | 2465 | pcm->card, index, &snd_pcm_oss_f_reg, |
Clemens Ladisch | f87135f | 2005-11-20 14:06:59 +0100 | [diff] [blame] | 2466 | pcm, name) < 0) { |
Takashi Iwai | d3d579f | 2005-10-21 16:20:11 +0200 | [diff] [blame] | 2467 | snd_printk(KERN_ERR "unable to register OSS PCM device %i:%i\n", |
| 2468 | pcm->card->number, pcm->device); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2469 | } |
| 2470 | } |
| 2471 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2472 | static int snd_pcm_oss_register_minor(struct snd_pcm *pcm) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2473 | { |
| 2474 | pcm->oss.reg = 0; |
| 2475 | if (dsp_map[pcm->card->number] == (int)pcm->device) { |
| 2476 | char name[128]; |
| 2477 | int duplex; |
| 2478 | register_oss_dsp(pcm, 0); |
| 2479 | duplex = (pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream_count > 0 && |
| 2480 | pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream_count && |
| 2481 | !(pcm->info_flags & SNDRV_PCM_INFO_HALF_DUPLEX)); |
| 2482 | sprintf(name, "%s%s", pcm->name, duplex ? " (DUPLEX)" : ""); |
| 2483 | #ifdef SNDRV_OSS_INFO_DEV_AUDIO |
| 2484 | snd_oss_info_register(SNDRV_OSS_INFO_DEV_AUDIO, |
| 2485 | pcm->card->number, |
| 2486 | name); |
| 2487 | #endif |
| 2488 | pcm->oss.reg++; |
| 2489 | pcm->oss.reg_mask |= 1; |
| 2490 | } |
| 2491 | if (adsp_map[pcm->card->number] == (int)pcm->device) { |
| 2492 | register_oss_dsp(pcm, 1); |
| 2493 | pcm->oss.reg++; |
| 2494 | pcm->oss.reg_mask |= 2; |
| 2495 | } |
| 2496 | |
| 2497 | if (pcm->oss.reg) |
| 2498 | snd_pcm_oss_proc_init(pcm); |
| 2499 | |
| 2500 | return 0; |
| 2501 | } |
| 2502 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2503 | static int snd_pcm_oss_disconnect_minor(struct snd_pcm *pcm) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2504 | { |
| 2505 | if (pcm->oss.reg) { |
| 2506 | if (pcm->oss.reg_mask & 1) { |
| 2507 | pcm->oss.reg_mask &= ~1; |
| 2508 | snd_unregister_oss_device(SNDRV_OSS_DEVICE_TYPE_PCM, |
| 2509 | pcm->card, 0); |
| 2510 | } |
| 2511 | if (pcm->oss.reg_mask & 2) { |
| 2512 | pcm->oss.reg_mask &= ~2; |
| 2513 | snd_unregister_oss_device(SNDRV_OSS_DEVICE_TYPE_PCM, |
| 2514 | pcm->card, 1); |
| 2515 | } |
| 2516 | } |
| 2517 | return 0; |
| 2518 | } |
| 2519 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2520 | static int snd_pcm_oss_unregister_minor(struct snd_pcm *pcm) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2521 | { |
| 2522 | snd_pcm_oss_disconnect_minor(pcm); |
| 2523 | if (pcm->oss.reg) { |
| 2524 | if (dsp_map[pcm->card->number] == (int)pcm->device) { |
| 2525 | #ifdef SNDRV_OSS_INFO_DEV_AUDIO |
| 2526 | snd_oss_info_unregister(SNDRV_OSS_INFO_DEV_AUDIO, pcm->card->number); |
| 2527 | #endif |
| 2528 | } |
| 2529 | pcm->oss.reg = 0; |
| 2530 | snd_pcm_oss_proc_done(pcm); |
| 2531 | } |
| 2532 | return 0; |
| 2533 | } |
| 2534 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2535 | static struct snd_pcm_notify snd_pcm_oss_notify = |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2536 | { |
| 2537 | .n_register = snd_pcm_oss_register_minor, |
| 2538 | .n_disconnect = snd_pcm_oss_disconnect_minor, |
| 2539 | .n_unregister = snd_pcm_oss_unregister_minor, |
| 2540 | }; |
| 2541 | |
| 2542 | static int __init alsa_pcm_oss_init(void) |
| 2543 | { |
| 2544 | int i; |
| 2545 | int err; |
| 2546 | |
| 2547 | /* check device map table */ |
| 2548 | for (i = 0; i < SNDRV_CARDS; i++) { |
| 2549 | if (dsp_map[i] < 0 || dsp_map[i] >= SNDRV_PCM_DEVICES) { |
Takashi Iwai | d3d579f | 2005-10-21 16:20:11 +0200 | [diff] [blame] | 2550 | snd_printk(KERN_ERR "invalid dsp_map[%d] = %d\n", |
| 2551 | i, dsp_map[i]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2552 | dsp_map[i] = 0; |
| 2553 | } |
| 2554 | if (adsp_map[i] < 0 || adsp_map[i] >= SNDRV_PCM_DEVICES) { |
Takashi Iwai | d3d579f | 2005-10-21 16:20:11 +0200 | [diff] [blame] | 2555 | snd_printk(KERN_ERR "invalid adsp_map[%d] = %d\n", |
| 2556 | i, adsp_map[i]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2557 | adsp_map[i] = 1; |
| 2558 | } |
| 2559 | } |
| 2560 | if ((err = snd_pcm_notify(&snd_pcm_oss_notify, 0)) < 0) |
| 2561 | return err; |
| 2562 | return 0; |
| 2563 | } |
| 2564 | |
| 2565 | static void __exit alsa_pcm_oss_exit(void) |
| 2566 | { |
| 2567 | snd_pcm_notify(&snd_pcm_oss_notify, 1); |
| 2568 | } |
| 2569 | |
| 2570 | module_init(alsa_pcm_oss_init) |
| 2571 | module_exit(alsa_pcm_oss_exit) |