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 | |
Takashi Iwai | 060d77b | 2006-03-27 16:44:52 +0200 | [diff] [blame] | 211 | if (substream->oss.setup.period_size > 16) |
| 212 | oss_period_size = substream->oss.setup.period_size; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 213 | else if (runtime->oss.fragshift) { |
| 214 | oss_period_size = 1 << runtime->oss.fragshift; |
| 215 | if (oss_period_size > oss_buffer_size / 2) |
| 216 | oss_period_size = oss_buffer_size / 2; |
| 217 | } else { |
| 218 | int sd; |
| 219 | size_t bytes_per_sec = params_rate(oss_params) * snd_pcm_format_physical_width(params_format(oss_params)) * params_channels(oss_params) / 8; |
| 220 | |
| 221 | oss_period_size = oss_buffer_size; |
| 222 | do { |
| 223 | oss_period_size /= 2; |
| 224 | } while (oss_period_size > bytes_per_sec); |
| 225 | if (runtime->oss.subdivision == 0) { |
| 226 | sd = 4; |
| 227 | if (oss_period_size / sd > 4096) |
| 228 | sd *= 2; |
| 229 | if (oss_period_size / sd < 4096) |
| 230 | sd = 1; |
| 231 | } else |
| 232 | sd = runtime->oss.subdivision; |
| 233 | oss_period_size /= sd; |
| 234 | if (oss_period_size < 16) |
| 235 | oss_period_size = 16; |
| 236 | } |
| 237 | |
| 238 | min_period_size = snd_pcm_plug_client_size(substream, |
| 239 | snd_pcm_hw_param_value_min(slave_params, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, NULL)); |
| 240 | min_period_size *= oss_frame_size; |
| 241 | min_period_size = 1 << (ld2(min_period_size - 1) + 1); |
| 242 | if (oss_period_size < min_period_size) |
| 243 | oss_period_size = min_period_size; |
| 244 | |
| 245 | max_period_size = snd_pcm_plug_client_size(substream, |
| 246 | snd_pcm_hw_param_value_max(slave_params, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, NULL)); |
| 247 | max_period_size *= oss_frame_size; |
| 248 | max_period_size = 1 << ld2(max_period_size); |
| 249 | if (oss_period_size > max_period_size) |
| 250 | oss_period_size = max_period_size; |
| 251 | |
| 252 | oss_periods = oss_buffer_size / oss_period_size; |
| 253 | |
Takashi Iwai | 060d77b | 2006-03-27 16:44:52 +0200 | [diff] [blame] | 254 | if (substream->oss.setup.periods > 1) |
| 255 | oss_periods = substream->oss.setup.periods; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 256 | |
| 257 | s = snd_pcm_hw_param_value_max(slave_params, SNDRV_PCM_HW_PARAM_PERIODS, NULL); |
| 258 | if (runtime->oss.maxfrags && s > runtime->oss.maxfrags) |
| 259 | s = runtime->oss.maxfrags; |
| 260 | if (oss_periods > s) |
| 261 | oss_periods = s; |
| 262 | |
| 263 | s = snd_pcm_hw_param_value_min(slave_params, SNDRV_PCM_HW_PARAM_PERIODS, NULL); |
| 264 | if (s < 2) |
| 265 | s = 2; |
| 266 | if (oss_periods < s) |
| 267 | oss_periods = s; |
| 268 | |
| 269 | while (oss_period_size * oss_periods > oss_buffer_size) |
| 270 | oss_period_size /= 2; |
| 271 | |
| 272 | snd_assert(oss_period_size >= 16, return -EINVAL); |
| 273 | runtime->oss.period_bytes = oss_period_size; |
| 274 | runtime->oss.period_frames = 1; |
| 275 | runtime->oss.periods = oss_periods; |
| 276 | return 0; |
| 277 | } |
| 278 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 279 | static int choose_rate(struct snd_pcm_substream *substream, |
| 280 | struct snd_pcm_hw_params *params, unsigned int best_rate) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 281 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 282 | struct snd_interval *it; |
| 283 | struct snd_pcm_hw_params *save; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 284 | unsigned int rate, prev; |
| 285 | |
| 286 | save = kmalloc(sizeof(*save), GFP_KERNEL); |
| 287 | if (save == NULL) |
| 288 | return -ENOMEM; |
| 289 | *save = *params; |
| 290 | it = hw_param_interval(save, SNDRV_PCM_HW_PARAM_RATE); |
| 291 | |
| 292 | /* try multiples of the best rate */ |
| 293 | rate = best_rate; |
| 294 | for (;;) { |
| 295 | if (it->max < rate || (it->max == rate && it->openmax)) |
| 296 | break; |
| 297 | if (it->min < rate || (it->min == rate && !it->openmin)) { |
| 298 | int ret; |
| 299 | ret = snd_pcm_hw_param_set(substream, params, |
| 300 | SNDRV_PCM_HW_PARAM_RATE, |
| 301 | rate, 0); |
| 302 | if (ret == (int)rate) { |
| 303 | kfree(save); |
| 304 | return rate; |
| 305 | } |
| 306 | *params = *save; |
| 307 | } |
| 308 | prev = rate; |
| 309 | rate += best_rate; |
| 310 | if (rate <= prev) |
| 311 | break; |
| 312 | } |
| 313 | |
| 314 | /* not found, use the nearest rate */ |
| 315 | kfree(save); |
| 316 | return snd_pcm_hw_param_near(substream, params, SNDRV_PCM_HW_PARAM_RATE, best_rate, NULL); |
| 317 | } |
| 318 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 319 | static int snd_pcm_oss_change_params(struct snd_pcm_substream *substream) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 320 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 321 | struct snd_pcm_runtime *runtime = substream->runtime; |
| 322 | struct snd_pcm_hw_params *params, *sparams; |
| 323 | struct snd_pcm_sw_params *sw_params; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 324 | ssize_t oss_buffer_size, oss_period_size; |
| 325 | size_t oss_frame_size; |
| 326 | int err; |
| 327 | int direct; |
| 328 | int format, sformat, n; |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 329 | struct snd_mask sformat_mask; |
| 330 | struct snd_mask mask; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 331 | |
| 332 | sw_params = kmalloc(sizeof(*sw_params), GFP_KERNEL); |
| 333 | params = kmalloc(sizeof(*params), GFP_KERNEL); |
| 334 | sparams = kmalloc(sizeof(*sparams), GFP_KERNEL); |
| 335 | if (!sw_params || !params || !sparams) { |
| 336 | snd_printd("No memory\n"); |
| 337 | err = -ENOMEM; |
| 338 | goto failure; |
| 339 | } |
| 340 | |
Takashi Iwai | 060d77b | 2006-03-27 16:44:52 +0200 | [diff] [blame] | 341 | if (atomic_read(&runtime->mmap_count)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 342 | direct = 1; |
Takashi Iwai | 060d77b | 2006-03-27 16:44:52 +0200 | [diff] [blame] | 343 | else |
| 344 | direct = substream->oss.setup.direct; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 345 | |
| 346 | _snd_pcm_hw_params_any(sparams); |
| 347 | _snd_pcm_hw_param_setinteger(sparams, SNDRV_PCM_HW_PARAM_PERIODS); |
| 348 | _snd_pcm_hw_param_min(sparams, SNDRV_PCM_HW_PARAM_PERIODS, 2, 0); |
| 349 | snd_mask_none(&mask); |
| 350 | if (atomic_read(&runtime->mmap_count)) |
| 351 | snd_mask_set(&mask, SNDRV_PCM_ACCESS_MMAP_INTERLEAVED); |
| 352 | else { |
| 353 | snd_mask_set(&mask, SNDRV_PCM_ACCESS_RW_INTERLEAVED); |
| 354 | if (!direct) |
| 355 | snd_mask_set(&mask, SNDRV_PCM_ACCESS_RW_NONINTERLEAVED); |
| 356 | } |
| 357 | err = snd_pcm_hw_param_mask(substream, sparams, SNDRV_PCM_HW_PARAM_ACCESS, &mask); |
| 358 | if (err < 0) { |
| 359 | snd_printd("No usable accesses\n"); |
| 360 | err = -EINVAL; |
| 361 | goto failure; |
| 362 | } |
| 363 | choose_rate(substream, sparams, runtime->oss.rate); |
| 364 | snd_pcm_hw_param_near(substream, sparams, SNDRV_PCM_HW_PARAM_CHANNELS, runtime->oss.channels, NULL); |
| 365 | |
| 366 | format = snd_pcm_oss_format_from(runtime->oss.format); |
| 367 | |
| 368 | sformat_mask = *hw_param_mask(sparams, SNDRV_PCM_HW_PARAM_FORMAT); |
| 369 | if (direct) |
| 370 | sformat = format; |
| 371 | else |
| 372 | sformat = snd_pcm_plug_slave_format(format, &sformat_mask); |
| 373 | |
| 374 | if (sformat < 0 || !snd_mask_test(&sformat_mask, sformat)) { |
| 375 | for (sformat = 0; sformat <= SNDRV_PCM_FORMAT_LAST; sformat++) { |
| 376 | if (snd_mask_test(&sformat_mask, sformat) && |
| 377 | snd_pcm_oss_format_to(sformat) >= 0) |
| 378 | break; |
| 379 | } |
| 380 | if (sformat > SNDRV_PCM_FORMAT_LAST) { |
| 381 | snd_printd("Cannot find a format!!!\n"); |
| 382 | err = -EINVAL; |
| 383 | goto failure; |
| 384 | } |
| 385 | } |
| 386 | err = _snd_pcm_hw_param_set(sparams, SNDRV_PCM_HW_PARAM_FORMAT, sformat, 0); |
| 387 | snd_assert(err >= 0, goto failure); |
| 388 | |
| 389 | if (direct) { |
| 390 | memcpy(params, sparams, sizeof(*params)); |
| 391 | } else { |
| 392 | _snd_pcm_hw_params_any(params); |
| 393 | _snd_pcm_hw_param_set(params, SNDRV_PCM_HW_PARAM_ACCESS, |
| 394 | SNDRV_PCM_ACCESS_RW_INTERLEAVED, 0); |
| 395 | _snd_pcm_hw_param_set(params, SNDRV_PCM_HW_PARAM_FORMAT, |
| 396 | snd_pcm_oss_format_from(runtime->oss.format), 0); |
| 397 | _snd_pcm_hw_param_set(params, SNDRV_PCM_HW_PARAM_CHANNELS, |
| 398 | runtime->oss.channels, 0); |
| 399 | _snd_pcm_hw_param_set(params, SNDRV_PCM_HW_PARAM_RATE, |
| 400 | runtime->oss.rate, 0); |
| 401 | pdprintf("client: access = %i, format = %i, channels = %i, rate = %i\n", |
| 402 | params_access(params), params_format(params), |
| 403 | params_channels(params), params_rate(params)); |
| 404 | } |
| 405 | pdprintf("slave: access = %i, format = %i, channels = %i, rate = %i\n", |
| 406 | params_access(sparams), params_format(sparams), |
| 407 | params_channels(sparams), params_rate(sparams)); |
| 408 | |
| 409 | oss_frame_size = snd_pcm_format_physical_width(params_format(params)) * |
| 410 | params_channels(params) / 8; |
| 411 | |
Jaroslav Kysela | 21a3479 | 2006-01-13 09:12:11 +0100 | [diff] [blame] | 412 | #ifdef CONFIG_SND_PCM_OSS_PLUGINS |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 413 | snd_pcm_oss_plugin_clear(substream); |
| 414 | if (!direct) { |
| 415 | /* add necessary plugins */ |
| 416 | snd_pcm_oss_plugin_clear(substream); |
| 417 | if ((err = snd_pcm_plug_format_plugins(substream, |
| 418 | params, |
| 419 | sparams)) < 0) { |
| 420 | snd_printd("snd_pcm_plug_format_plugins failed: %i\n", err); |
| 421 | snd_pcm_oss_plugin_clear(substream); |
| 422 | goto failure; |
| 423 | } |
| 424 | if (runtime->oss.plugin_first) { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 425 | struct snd_pcm_plugin *plugin; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 426 | if ((err = snd_pcm_plugin_build_io(substream, sparams, &plugin)) < 0) { |
| 427 | snd_printd("snd_pcm_plugin_build_io failed: %i\n", err); |
| 428 | snd_pcm_oss_plugin_clear(substream); |
| 429 | goto failure; |
| 430 | } |
| 431 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { |
| 432 | err = snd_pcm_plugin_append(plugin); |
| 433 | } else { |
| 434 | err = snd_pcm_plugin_insert(plugin); |
| 435 | } |
| 436 | if (err < 0) { |
| 437 | snd_pcm_oss_plugin_clear(substream); |
| 438 | goto failure; |
| 439 | } |
| 440 | } |
| 441 | } |
Jaroslav Kysela | 21a3479 | 2006-01-13 09:12:11 +0100 | [diff] [blame] | 442 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 443 | |
| 444 | err = snd_pcm_oss_period_size(substream, params, sparams); |
| 445 | if (err < 0) |
| 446 | goto failure; |
| 447 | |
| 448 | n = snd_pcm_plug_slave_size(substream, runtime->oss.period_bytes / oss_frame_size); |
| 449 | err = snd_pcm_hw_param_near(substream, sparams, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, n, NULL); |
| 450 | snd_assert(err >= 0, goto failure); |
| 451 | |
| 452 | err = snd_pcm_hw_param_near(substream, sparams, SNDRV_PCM_HW_PARAM_PERIODS, |
| 453 | runtime->oss.periods, NULL); |
| 454 | snd_assert(err >= 0, goto failure); |
| 455 | |
| 456 | snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DROP, NULL); |
| 457 | |
| 458 | if ((err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_HW_PARAMS, sparams)) < 0) { |
| 459 | snd_printd("HW_PARAMS failed: %i\n", err); |
| 460 | goto failure; |
| 461 | } |
| 462 | |
| 463 | memset(sw_params, 0, sizeof(*sw_params)); |
| 464 | if (runtime->oss.trigger) { |
| 465 | sw_params->start_threshold = 1; |
| 466 | } else { |
| 467 | sw_params->start_threshold = runtime->boundary; |
| 468 | } |
| 469 | if (atomic_read(&runtime->mmap_count) || substream->stream == SNDRV_PCM_STREAM_CAPTURE) |
| 470 | sw_params->stop_threshold = runtime->boundary; |
| 471 | else |
| 472 | sw_params->stop_threshold = runtime->buffer_size; |
| 473 | sw_params->tstamp_mode = SNDRV_PCM_TSTAMP_NONE; |
| 474 | sw_params->period_step = 1; |
| 475 | sw_params->sleep_min = 0; |
Takashi Iwai | 004e653 | 2005-04-12 17:33:59 +0200 | [diff] [blame] | 476 | sw_params->avail_min = substream->stream == SNDRV_PCM_STREAM_PLAYBACK ? |
| 477 | 1 : runtime->period_size; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 478 | sw_params->xfer_align = 1; |
| 479 | if (atomic_read(&runtime->mmap_count) || |
Takashi Iwai | 060d77b | 2006-03-27 16:44:52 +0200 | [diff] [blame] | 480 | substream->oss.setup.nosilence) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 481 | sw_params->silence_threshold = 0; |
| 482 | sw_params->silence_size = 0; |
| 483 | } else { |
| 484 | snd_pcm_uframes_t frames; |
| 485 | frames = runtime->period_size + 16; |
| 486 | if (frames > runtime->buffer_size) |
| 487 | frames = runtime->buffer_size; |
| 488 | sw_params->silence_threshold = frames; |
| 489 | sw_params->silence_size = frames; |
| 490 | } |
| 491 | |
| 492 | if ((err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_SW_PARAMS, sw_params)) < 0) { |
| 493 | snd_printd("SW_PARAMS failed: %i\n", err); |
| 494 | goto failure; |
| 495 | } |
| 496 | |
| 497 | runtime->oss.periods = params_periods(sparams); |
| 498 | oss_period_size = snd_pcm_plug_client_size(substream, params_period_size(sparams)); |
| 499 | snd_assert(oss_period_size >= 0, err = -EINVAL; goto failure); |
Jaroslav Kysela | 21a3479 | 2006-01-13 09:12:11 +0100 | [diff] [blame] | 500 | #ifdef CONFIG_SND_PCM_OSS_PLUGINS |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 501 | if (runtime->oss.plugin_first) { |
| 502 | err = snd_pcm_plug_alloc(substream, oss_period_size); |
| 503 | if (err < 0) |
| 504 | goto failure; |
| 505 | } |
Jaroslav Kysela | 21a3479 | 2006-01-13 09:12:11 +0100 | [diff] [blame] | 506 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 507 | oss_period_size *= oss_frame_size; |
| 508 | |
| 509 | oss_buffer_size = oss_period_size * runtime->oss.periods; |
| 510 | snd_assert(oss_buffer_size >= 0, err = -EINVAL; goto failure); |
| 511 | |
| 512 | runtime->oss.period_bytes = oss_period_size; |
| 513 | runtime->oss.buffer_bytes = oss_buffer_size; |
| 514 | |
| 515 | pdprintf("oss: period bytes = %i, buffer bytes = %i\n", |
| 516 | runtime->oss.period_bytes, |
| 517 | runtime->oss.buffer_bytes); |
| 518 | pdprintf("slave: period_size = %i, buffer_size = %i\n", |
| 519 | params_period_size(sparams), |
| 520 | params_buffer_size(sparams)); |
| 521 | |
| 522 | runtime->oss.format = snd_pcm_oss_format_to(params_format(params)); |
| 523 | runtime->oss.channels = params_channels(params); |
| 524 | runtime->oss.rate = params_rate(params); |
| 525 | |
| 526 | runtime->oss.params = 0; |
| 527 | runtime->oss.prepare = 1; |
| 528 | vfree(runtime->oss.buffer); |
| 529 | runtime->oss.buffer = vmalloc(runtime->oss.period_bytes); |
| 530 | runtime->oss.buffer_used = 0; |
| 531 | if (runtime->dma_area) |
| 532 | snd_pcm_format_set_silence(runtime->format, runtime->dma_area, bytes_to_samples(runtime, runtime->dma_bytes)); |
| 533 | |
| 534 | runtime->oss.period_frames = snd_pcm_alsa_frames(substream, oss_period_size); |
| 535 | |
| 536 | err = 0; |
| 537 | failure: |
| 538 | kfree(sw_params); |
| 539 | kfree(params); |
| 540 | kfree(sparams); |
| 541 | return err; |
| 542 | } |
| 543 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 544 | 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] | 545 | { |
| 546 | int idx, err; |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 547 | struct snd_pcm_substream *asubstream = NULL, *substream; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 548 | |
| 549 | for (idx = 0; idx < 2; idx++) { |
| 550 | substream = pcm_oss_file->streams[idx]; |
| 551 | if (substream == NULL) |
| 552 | continue; |
| 553 | if (asubstream == NULL) |
| 554 | asubstream = substream; |
| 555 | if (substream->runtime->oss.params) { |
| 556 | err = snd_pcm_oss_change_params(substream); |
| 557 | if (err < 0) |
| 558 | return err; |
| 559 | } |
| 560 | } |
| 561 | snd_assert(asubstream != NULL, return -EIO); |
| 562 | if (r_substream) |
| 563 | *r_substream = asubstream; |
| 564 | return 0; |
| 565 | } |
| 566 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 567 | static int snd_pcm_oss_prepare(struct snd_pcm_substream *substream) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 568 | { |
| 569 | int err; |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 570 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 571 | |
| 572 | err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_PREPARE, NULL); |
| 573 | if (err < 0) { |
| 574 | snd_printd("snd_pcm_oss_prepare: SNDRV_PCM_IOCTL_PREPARE failed\n"); |
| 575 | return err; |
| 576 | } |
| 577 | runtime->oss.prepare = 0; |
| 578 | runtime->oss.prev_hw_ptr_interrupt = 0; |
| 579 | runtime->oss.period_ptr = 0; |
| 580 | runtime->oss.buffer_used = 0; |
| 581 | |
| 582 | return 0; |
| 583 | } |
| 584 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 585 | static int snd_pcm_oss_make_ready(struct snd_pcm_substream *substream) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 586 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 587 | struct snd_pcm_runtime *runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 588 | int err; |
| 589 | |
| 590 | if (substream == NULL) |
| 591 | return 0; |
| 592 | runtime = substream->runtime; |
| 593 | if (runtime->oss.params) { |
| 594 | err = snd_pcm_oss_change_params(substream); |
| 595 | if (err < 0) |
| 596 | return err; |
| 597 | } |
| 598 | if (runtime->oss.prepare) { |
| 599 | err = snd_pcm_oss_prepare(substream); |
| 600 | if (err < 0) |
| 601 | return err; |
| 602 | } |
| 603 | return 0; |
| 604 | } |
| 605 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 606 | 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] | 607 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 608 | struct snd_pcm_runtime *runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 609 | snd_pcm_uframes_t frames; |
| 610 | int err = 0; |
| 611 | |
| 612 | while (1) { |
| 613 | err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DELAY, delay); |
| 614 | if (err < 0) |
| 615 | break; |
| 616 | runtime = substream->runtime; |
| 617 | if (*delay <= (snd_pcm_sframes_t)runtime->buffer_size) |
| 618 | break; |
| 619 | /* in case of overrun, skip whole periods like OSS/Linux driver does */ |
| 620 | /* until avail(delay) <= buffer_size */ |
| 621 | frames = (*delay - runtime->buffer_size) + runtime->period_size - 1; |
| 622 | frames /= runtime->period_size; |
| 623 | frames *= runtime->period_size; |
| 624 | err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_FORWARD, &frames); |
| 625 | if (err < 0) |
| 626 | break; |
| 627 | } |
| 628 | return err; |
| 629 | } |
| 630 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 631 | 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] | 632 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 633 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 634 | int ret; |
| 635 | while (1) { |
| 636 | if (runtime->status->state == SNDRV_PCM_STATE_XRUN || |
| 637 | runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) { |
| 638 | #ifdef OSS_DEBUG |
| 639 | if (runtime->status->state == SNDRV_PCM_STATE_XRUN) |
| 640 | printk("pcm_oss: write: recovering from XRUN\n"); |
| 641 | else |
| 642 | printk("pcm_oss: write: recovering from SUSPEND\n"); |
| 643 | #endif |
| 644 | ret = snd_pcm_oss_prepare(substream); |
| 645 | if (ret < 0) |
| 646 | break; |
| 647 | } |
| 648 | if (in_kernel) { |
| 649 | mm_segment_t fs; |
| 650 | fs = snd_enter_user(); |
| 651 | ret = snd_pcm_lib_write(substream, (void __user *)ptr, frames); |
| 652 | snd_leave_user(fs); |
| 653 | } else { |
| 654 | ret = snd_pcm_lib_write(substream, (void __user *)ptr, frames); |
| 655 | } |
| 656 | if (ret != -EPIPE && ret != -ESTRPIPE) |
| 657 | break; |
| 658 | /* test, if we can't store new data, because the stream */ |
| 659 | /* has not been started */ |
| 660 | if (runtime->status->state == SNDRV_PCM_STATE_PREPARED) |
| 661 | return -EAGAIN; |
| 662 | } |
| 663 | return ret; |
| 664 | } |
| 665 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 666 | 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] | 667 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 668 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 669 | snd_pcm_sframes_t delay; |
| 670 | int ret; |
| 671 | while (1) { |
| 672 | if (runtime->status->state == SNDRV_PCM_STATE_XRUN || |
| 673 | runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) { |
| 674 | #ifdef OSS_DEBUG |
| 675 | if (runtime->status->state == SNDRV_PCM_STATE_XRUN) |
| 676 | printk("pcm_oss: read: recovering from XRUN\n"); |
| 677 | else |
| 678 | printk("pcm_oss: read: recovering from SUSPEND\n"); |
| 679 | #endif |
| 680 | ret = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DRAIN, NULL); |
| 681 | if (ret < 0) |
| 682 | break; |
| 683 | } else if (runtime->status->state == SNDRV_PCM_STATE_SETUP) { |
| 684 | ret = snd_pcm_oss_prepare(substream); |
| 685 | if (ret < 0) |
| 686 | break; |
| 687 | } |
| 688 | ret = snd_pcm_oss_capture_position_fixup(substream, &delay); |
| 689 | if (ret < 0) |
| 690 | break; |
| 691 | if (in_kernel) { |
| 692 | mm_segment_t fs; |
| 693 | fs = snd_enter_user(); |
| 694 | ret = snd_pcm_lib_read(substream, (void __user *)ptr, frames); |
| 695 | snd_leave_user(fs); |
| 696 | } else { |
| 697 | ret = snd_pcm_lib_read(substream, (void __user *)ptr, frames); |
| 698 | } |
| 699 | if (ret == -EPIPE) { |
| 700 | if (runtime->status->state == SNDRV_PCM_STATE_DRAINING) { |
| 701 | ret = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DROP, NULL); |
| 702 | if (ret < 0) |
| 703 | break; |
| 704 | } |
| 705 | continue; |
| 706 | } |
| 707 | if (ret != -ESTRPIPE) |
| 708 | break; |
| 709 | } |
| 710 | return ret; |
| 711 | } |
| 712 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 713 | 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] | 714 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 715 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 716 | int ret; |
| 717 | while (1) { |
| 718 | if (runtime->status->state == SNDRV_PCM_STATE_XRUN || |
| 719 | runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) { |
| 720 | #ifdef OSS_DEBUG |
| 721 | if (runtime->status->state == SNDRV_PCM_STATE_XRUN) |
| 722 | printk("pcm_oss: writev: recovering from XRUN\n"); |
| 723 | else |
| 724 | printk("pcm_oss: writev: recovering from SUSPEND\n"); |
| 725 | #endif |
| 726 | ret = snd_pcm_oss_prepare(substream); |
| 727 | if (ret < 0) |
| 728 | break; |
| 729 | } |
| 730 | if (in_kernel) { |
| 731 | mm_segment_t fs; |
| 732 | fs = snd_enter_user(); |
| 733 | ret = snd_pcm_lib_writev(substream, (void __user **)bufs, frames); |
| 734 | snd_leave_user(fs); |
| 735 | } else { |
| 736 | ret = snd_pcm_lib_writev(substream, (void __user **)bufs, frames); |
| 737 | } |
| 738 | if (ret != -EPIPE && ret != -ESTRPIPE) |
| 739 | break; |
| 740 | |
| 741 | /* test, if we can't store new data, because the stream */ |
| 742 | /* has not been started */ |
| 743 | if (runtime->status->state == SNDRV_PCM_STATE_PREPARED) |
| 744 | return -EAGAIN; |
| 745 | } |
| 746 | return ret; |
| 747 | } |
| 748 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 749 | 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] | 750 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 751 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 752 | int ret; |
| 753 | while (1) { |
| 754 | if (runtime->status->state == SNDRV_PCM_STATE_XRUN || |
| 755 | runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) { |
| 756 | #ifdef OSS_DEBUG |
| 757 | if (runtime->status->state == SNDRV_PCM_STATE_XRUN) |
| 758 | printk("pcm_oss: readv: recovering from XRUN\n"); |
| 759 | else |
| 760 | printk("pcm_oss: readv: recovering from SUSPEND\n"); |
| 761 | #endif |
| 762 | ret = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DRAIN, NULL); |
| 763 | if (ret < 0) |
| 764 | break; |
| 765 | } else if (runtime->status->state == SNDRV_PCM_STATE_SETUP) { |
| 766 | ret = snd_pcm_oss_prepare(substream); |
| 767 | if (ret < 0) |
| 768 | break; |
| 769 | } |
| 770 | if (in_kernel) { |
| 771 | mm_segment_t fs; |
| 772 | fs = snd_enter_user(); |
| 773 | ret = snd_pcm_lib_readv(substream, (void __user **)bufs, frames); |
| 774 | snd_leave_user(fs); |
| 775 | } else { |
| 776 | ret = snd_pcm_lib_readv(substream, (void __user **)bufs, frames); |
| 777 | } |
| 778 | if (ret != -EPIPE && ret != -ESTRPIPE) |
| 779 | break; |
| 780 | } |
| 781 | return ret; |
| 782 | } |
| 783 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 784 | 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] | 785 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 786 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 787 | snd_pcm_sframes_t frames, frames1; |
Jaroslav Kysela | 21a3479 | 2006-01-13 09:12:11 +0100 | [diff] [blame] | 788 | #ifdef CONFIG_SND_PCM_OSS_PLUGINS |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 789 | if (runtime->oss.plugin_first) { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 790 | struct snd_pcm_plugin_channel *channels; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 791 | size_t oss_frame_bytes = (runtime->oss.plugin_first->src_width * runtime->oss.plugin_first->src_format.channels) / 8; |
| 792 | if (!in_kernel) { |
| 793 | if (copy_from_user(runtime->oss.buffer, (const char __user *)buf, bytes)) |
| 794 | return -EFAULT; |
| 795 | buf = runtime->oss.buffer; |
| 796 | } |
| 797 | frames = bytes / oss_frame_bytes; |
| 798 | frames1 = snd_pcm_plug_client_channels_buf(substream, (char *)buf, frames, &channels); |
| 799 | if (frames1 < 0) |
| 800 | return frames1; |
| 801 | frames1 = snd_pcm_plug_write_transfer(substream, channels, frames1); |
| 802 | if (frames1 <= 0) |
| 803 | return frames1; |
| 804 | bytes = frames1 * oss_frame_bytes; |
Jaroslav Kysela | 21a3479 | 2006-01-13 09:12:11 +0100 | [diff] [blame] | 805 | } else |
| 806 | #endif |
| 807 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 808 | frames = bytes_to_frames(runtime, bytes); |
| 809 | frames1 = snd_pcm_oss_write3(substream, buf, frames, in_kernel); |
| 810 | if (frames1 <= 0) |
| 811 | return frames1; |
| 812 | bytes = frames_to_bytes(runtime, frames1); |
| 813 | } |
| 814 | return bytes; |
| 815 | } |
| 816 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 817 | 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] | 818 | { |
| 819 | size_t xfer = 0; |
| 820 | ssize_t tmp; |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 821 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 822 | |
| 823 | if (atomic_read(&runtime->mmap_count)) |
| 824 | return -ENXIO; |
| 825 | |
| 826 | if ((tmp = snd_pcm_oss_make_ready(substream)) < 0) |
| 827 | return tmp; |
| 828 | while (bytes > 0) { |
| 829 | if (bytes < runtime->oss.period_bytes || runtime->oss.buffer_used > 0) { |
| 830 | tmp = bytes; |
| 831 | if (tmp + runtime->oss.buffer_used > runtime->oss.period_bytes) |
| 832 | tmp = runtime->oss.period_bytes - runtime->oss.buffer_used; |
| 833 | if (tmp > 0) { |
| 834 | if (copy_from_user(runtime->oss.buffer + runtime->oss.buffer_used, buf, tmp)) |
| 835 | return xfer > 0 ? (snd_pcm_sframes_t)xfer : -EFAULT; |
| 836 | } |
| 837 | runtime->oss.buffer_used += tmp; |
| 838 | buf += tmp; |
| 839 | bytes -= tmp; |
| 840 | xfer += tmp; |
Takashi Iwai | 060d77b | 2006-03-27 16:44:52 +0200 | [diff] [blame] | 841 | if (substream->oss.setup.partialfrag || |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 842 | runtime->oss.buffer_used == runtime->oss.period_bytes) { |
| 843 | tmp = snd_pcm_oss_write2(substream, runtime->oss.buffer + runtime->oss.period_ptr, |
| 844 | runtime->oss.buffer_used - runtime->oss.period_ptr, 1); |
| 845 | if (tmp <= 0) |
| 846 | return xfer > 0 ? (snd_pcm_sframes_t)xfer : tmp; |
| 847 | runtime->oss.bytes += tmp; |
| 848 | runtime->oss.period_ptr += tmp; |
| 849 | runtime->oss.period_ptr %= runtime->oss.period_bytes; |
| 850 | if (runtime->oss.period_ptr == 0 || |
| 851 | runtime->oss.period_ptr == runtime->oss.buffer_used) |
| 852 | runtime->oss.buffer_used = 0; |
| 853 | else if ((substream->ffile->f_flags & O_NONBLOCK) != 0) |
| 854 | return xfer > 0 ? xfer : -EAGAIN; |
| 855 | } |
| 856 | } else { |
Clemens Ladisch | 4d23359 | 2005-09-05 10:35:20 +0200 | [diff] [blame] | 857 | tmp = snd_pcm_oss_write2(substream, |
| 858 | (const char __force *)buf, |
| 859 | runtime->oss.period_bytes, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 860 | if (tmp <= 0) |
| 861 | return xfer > 0 ? (snd_pcm_sframes_t)xfer : tmp; |
| 862 | runtime->oss.bytes += tmp; |
| 863 | buf += tmp; |
| 864 | bytes -= tmp; |
| 865 | xfer += tmp; |
| 866 | if ((substream->ffile->f_flags & O_NONBLOCK) != 0 && |
| 867 | tmp != runtime->oss.period_bytes) |
| 868 | break; |
| 869 | } |
| 870 | } |
| 871 | return xfer; |
| 872 | } |
| 873 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 874 | 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] | 875 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 876 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 877 | snd_pcm_sframes_t frames, frames1; |
Jaroslav Kysela | 21a3479 | 2006-01-13 09:12:11 +0100 | [diff] [blame] | 878 | #ifdef CONFIG_SND_PCM_OSS_PLUGINS |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 879 | char __user *final_dst = (char __user *)buf; |
| 880 | if (runtime->oss.plugin_first) { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 881 | struct snd_pcm_plugin_channel *channels; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 882 | size_t oss_frame_bytes = (runtime->oss.plugin_last->dst_width * runtime->oss.plugin_last->dst_format.channels) / 8; |
| 883 | if (!in_kernel) |
| 884 | buf = runtime->oss.buffer; |
| 885 | frames = bytes / oss_frame_bytes; |
| 886 | frames1 = snd_pcm_plug_client_channels_buf(substream, buf, frames, &channels); |
| 887 | if (frames1 < 0) |
| 888 | return frames1; |
| 889 | frames1 = snd_pcm_plug_read_transfer(substream, channels, frames1); |
| 890 | if (frames1 <= 0) |
| 891 | return frames1; |
| 892 | bytes = frames1 * oss_frame_bytes; |
| 893 | if (!in_kernel && copy_to_user(final_dst, buf, bytes)) |
| 894 | return -EFAULT; |
Jaroslav Kysela | 21a3479 | 2006-01-13 09:12:11 +0100 | [diff] [blame] | 895 | } else |
| 896 | #endif |
| 897 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 898 | frames = bytes_to_frames(runtime, bytes); |
| 899 | frames1 = snd_pcm_oss_read3(substream, buf, frames, in_kernel); |
| 900 | if (frames1 <= 0) |
| 901 | return frames1; |
| 902 | bytes = frames_to_bytes(runtime, frames1); |
| 903 | } |
| 904 | return bytes; |
| 905 | } |
| 906 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 907 | 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] | 908 | { |
| 909 | size_t xfer = 0; |
| 910 | ssize_t tmp; |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 911 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 912 | |
| 913 | if (atomic_read(&runtime->mmap_count)) |
| 914 | return -ENXIO; |
| 915 | |
| 916 | if ((tmp = snd_pcm_oss_make_ready(substream)) < 0) |
| 917 | return tmp; |
| 918 | while (bytes > 0) { |
| 919 | if (bytes < runtime->oss.period_bytes || runtime->oss.buffer_used > 0) { |
| 920 | if (runtime->oss.buffer_used == 0) { |
| 921 | tmp = snd_pcm_oss_read2(substream, runtime->oss.buffer, runtime->oss.period_bytes, 1); |
| 922 | if (tmp <= 0) |
| 923 | return xfer > 0 ? (snd_pcm_sframes_t)xfer : tmp; |
| 924 | runtime->oss.bytes += tmp; |
| 925 | runtime->oss.period_ptr = tmp; |
| 926 | runtime->oss.buffer_used = tmp; |
| 927 | } |
| 928 | tmp = bytes; |
| 929 | if ((size_t) tmp > runtime->oss.buffer_used) |
| 930 | tmp = runtime->oss.buffer_used; |
| 931 | if (copy_to_user(buf, runtime->oss.buffer + (runtime->oss.period_ptr - runtime->oss.buffer_used), tmp)) |
| 932 | return xfer > 0 ? (snd_pcm_sframes_t)xfer : -EFAULT; |
| 933 | buf += tmp; |
| 934 | bytes -= tmp; |
| 935 | xfer += tmp; |
| 936 | runtime->oss.buffer_used -= tmp; |
| 937 | } else { |
Clemens Ladisch | 4d23359 | 2005-09-05 10:35:20 +0200 | [diff] [blame] | 938 | tmp = snd_pcm_oss_read2(substream, (char __force *)buf, |
| 939 | runtime->oss.period_bytes, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 940 | if (tmp <= 0) |
| 941 | return xfer > 0 ? (snd_pcm_sframes_t)xfer : tmp; |
| 942 | runtime->oss.bytes += tmp; |
| 943 | buf += tmp; |
| 944 | bytes -= tmp; |
| 945 | xfer += tmp; |
| 946 | } |
| 947 | } |
| 948 | return xfer; |
| 949 | } |
| 950 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 951 | 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] | 952 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 953 | struct snd_pcm_substream *substream; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 954 | |
| 955 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK]; |
| 956 | if (substream != NULL) { |
Takashi Iwai | bf1bbb5 | 2006-03-27 16:22:45 +0200 | [diff] [blame] | 957 | snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DROP, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 958 | substream->runtime->oss.prepare = 1; |
| 959 | } |
| 960 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE]; |
| 961 | if (substream != NULL) { |
Takashi Iwai | bf1bbb5 | 2006-03-27 16:22:45 +0200 | [diff] [blame] | 962 | snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DROP, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 963 | substream->runtime->oss.prepare = 1; |
| 964 | } |
| 965 | return 0; |
| 966 | } |
| 967 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 968 | 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] | 969 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 970 | struct snd_pcm_substream *substream; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 971 | int err; |
| 972 | |
| 973 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK]; |
| 974 | if (substream != NULL) { |
| 975 | if ((err = snd_pcm_oss_make_ready(substream)) < 0) |
| 976 | return err; |
Takashi Iwai | bf1bbb5 | 2006-03-27 16:22:45 +0200 | [diff] [blame] | 977 | snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_START, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 978 | } |
| 979 | /* note: all errors from the start action are ignored */ |
| 980 | /* OSS apps do not know, how to handle them */ |
| 981 | return 0; |
| 982 | } |
| 983 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 984 | 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] | 985 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 986 | struct snd_pcm_runtime *runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 987 | ssize_t result = 0; |
| 988 | long res; |
| 989 | wait_queue_t wait; |
| 990 | |
| 991 | runtime = substream->runtime; |
| 992 | init_waitqueue_entry(&wait, current); |
| 993 | add_wait_queue(&runtime->sleep, &wait); |
| 994 | #ifdef OSS_DEBUG |
| 995 | printk("sync1: size = %li\n", size); |
| 996 | #endif |
| 997 | while (1) { |
| 998 | result = snd_pcm_oss_write2(substream, runtime->oss.buffer, size, 1); |
| 999 | if (result > 0) { |
| 1000 | runtime->oss.buffer_used = 0; |
| 1001 | result = 0; |
| 1002 | break; |
| 1003 | } |
| 1004 | if (result != 0 && result != -EAGAIN) |
| 1005 | break; |
| 1006 | result = 0; |
| 1007 | set_current_state(TASK_INTERRUPTIBLE); |
| 1008 | snd_pcm_stream_lock_irq(substream); |
| 1009 | res = runtime->status->state; |
| 1010 | snd_pcm_stream_unlock_irq(substream); |
| 1011 | if (res != SNDRV_PCM_STATE_RUNNING) { |
| 1012 | set_current_state(TASK_RUNNING); |
| 1013 | break; |
| 1014 | } |
| 1015 | res = schedule_timeout(10 * HZ); |
| 1016 | if (signal_pending(current)) { |
| 1017 | result = -ERESTARTSYS; |
| 1018 | break; |
| 1019 | } |
| 1020 | if (res == 0) { |
| 1021 | snd_printk(KERN_ERR "OSS sync error - DMA timeout\n"); |
| 1022 | result = -EIO; |
| 1023 | break; |
| 1024 | } |
| 1025 | } |
| 1026 | remove_wait_queue(&runtime->sleep, &wait); |
| 1027 | return result; |
| 1028 | } |
| 1029 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1030 | 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] | 1031 | { |
| 1032 | int err = 0; |
| 1033 | unsigned int saved_f_flags; |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1034 | struct snd_pcm_substream *substream; |
| 1035 | struct snd_pcm_runtime *runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1036 | snd_pcm_format_t format; |
| 1037 | unsigned long width; |
| 1038 | size_t size; |
| 1039 | |
| 1040 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK]; |
| 1041 | if (substream != NULL) { |
| 1042 | runtime = substream->runtime; |
| 1043 | if (atomic_read(&runtime->mmap_count)) |
| 1044 | goto __direct; |
| 1045 | if ((err = snd_pcm_oss_make_ready(substream)) < 0) |
| 1046 | return err; |
| 1047 | format = snd_pcm_oss_format_from(runtime->oss.format); |
| 1048 | width = snd_pcm_format_physical_width(format); |
| 1049 | if (runtime->oss.buffer_used > 0) { |
| 1050 | #ifdef OSS_DEBUG |
| 1051 | printk("sync: buffer_used\n"); |
| 1052 | #endif |
| 1053 | size = (8 * (runtime->oss.period_bytes - runtime->oss.buffer_used) + 7) / width; |
| 1054 | snd_pcm_format_set_silence(format, |
| 1055 | runtime->oss.buffer + runtime->oss.buffer_used, |
| 1056 | size); |
| 1057 | err = snd_pcm_oss_sync1(substream, runtime->oss.period_bytes); |
| 1058 | if (err < 0) |
| 1059 | return err; |
| 1060 | } else if (runtime->oss.period_ptr > 0) { |
| 1061 | #ifdef OSS_DEBUG |
| 1062 | printk("sync: period_ptr\n"); |
| 1063 | #endif |
| 1064 | size = runtime->oss.period_bytes - runtime->oss.period_ptr; |
| 1065 | snd_pcm_format_set_silence(format, |
| 1066 | runtime->oss.buffer, |
| 1067 | size * 8 / width); |
| 1068 | err = snd_pcm_oss_sync1(substream, size); |
| 1069 | if (err < 0) |
| 1070 | return err; |
| 1071 | } |
| 1072 | /* |
| 1073 | * The ALSA's period might be a bit large than OSS one. |
| 1074 | * Fill the remain portion of ALSA period with zeros. |
| 1075 | */ |
| 1076 | size = runtime->control->appl_ptr % runtime->period_size; |
| 1077 | if (size > 0) { |
| 1078 | size = runtime->period_size - size; |
| 1079 | if (runtime->access == SNDRV_PCM_ACCESS_RW_INTERLEAVED) { |
| 1080 | size = (runtime->frame_bits * size) / 8; |
| 1081 | while (size > 0) { |
| 1082 | mm_segment_t fs; |
| 1083 | size_t size1 = size < runtime->oss.period_bytes ? size : runtime->oss.period_bytes; |
| 1084 | size -= size1; |
| 1085 | size1 *= 8; |
| 1086 | size1 /= runtime->sample_bits; |
| 1087 | snd_pcm_format_set_silence(runtime->format, |
| 1088 | runtime->oss.buffer, |
| 1089 | size1); |
| 1090 | fs = snd_enter_user(); |
| 1091 | snd_pcm_lib_write(substream, (void __user *)runtime->oss.buffer, size1); |
| 1092 | snd_leave_user(fs); |
| 1093 | } |
| 1094 | } else if (runtime->access == SNDRV_PCM_ACCESS_RW_NONINTERLEAVED) { |
| 1095 | void __user *buffers[runtime->channels]; |
| 1096 | memset(buffers, 0, runtime->channels * sizeof(void *)); |
| 1097 | snd_pcm_lib_writev(substream, buffers, size); |
| 1098 | } |
| 1099 | } |
| 1100 | /* |
| 1101 | * finish sync: drain the buffer |
| 1102 | */ |
| 1103 | __direct: |
| 1104 | saved_f_flags = substream->ffile->f_flags; |
| 1105 | substream->ffile->f_flags &= ~O_NONBLOCK; |
Takashi Iwai | bf1bbb5 | 2006-03-27 16:22:45 +0200 | [diff] [blame] | 1106 | err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DRAIN, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1107 | substream->ffile->f_flags = saved_f_flags; |
| 1108 | if (err < 0) |
| 1109 | return err; |
| 1110 | runtime->oss.prepare = 1; |
| 1111 | } |
| 1112 | |
| 1113 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE]; |
| 1114 | if (substream != NULL) { |
| 1115 | if ((err = snd_pcm_oss_make_ready(substream)) < 0) |
| 1116 | return err; |
| 1117 | runtime = substream->runtime; |
Takashi Iwai | bf1bbb5 | 2006-03-27 16:22:45 +0200 | [diff] [blame] | 1118 | err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DROP, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1119 | if (err < 0) |
| 1120 | return err; |
| 1121 | runtime->oss.buffer_used = 0; |
| 1122 | runtime->oss.prepare = 1; |
| 1123 | } |
| 1124 | return 0; |
| 1125 | } |
| 1126 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1127 | 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] | 1128 | { |
| 1129 | int idx; |
| 1130 | |
| 1131 | for (idx = 1; idx >= 0; --idx) { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1132 | struct snd_pcm_substream *substream = pcm_oss_file->streams[idx]; |
| 1133 | struct snd_pcm_runtime *runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1134 | if (substream == NULL) |
| 1135 | continue; |
| 1136 | runtime = substream->runtime; |
| 1137 | if (rate < 1000) |
| 1138 | rate = 1000; |
| 1139 | else if (rate > 192000) |
| 1140 | rate = 192000; |
| 1141 | if (runtime->oss.rate != rate) { |
| 1142 | runtime->oss.params = 1; |
| 1143 | runtime->oss.rate = rate; |
| 1144 | } |
| 1145 | } |
| 1146 | return snd_pcm_oss_get_rate(pcm_oss_file); |
| 1147 | } |
| 1148 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1149 | 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] | 1150 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1151 | struct snd_pcm_substream *substream; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1152 | int err; |
| 1153 | |
| 1154 | if ((err = snd_pcm_oss_get_active_substream(pcm_oss_file, &substream)) < 0) |
| 1155 | return err; |
| 1156 | return substream->runtime->oss.rate; |
| 1157 | } |
| 1158 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1159 | 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] | 1160 | { |
| 1161 | int idx; |
| 1162 | if (channels < 1) |
| 1163 | channels = 1; |
| 1164 | if (channels > 128) |
| 1165 | return -EINVAL; |
| 1166 | for (idx = 1; idx >= 0; --idx) { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1167 | struct snd_pcm_substream *substream = pcm_oss_file->streams[idx]; |
| 1168 | struct snd_pcm_runtime *runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1169 | if (substream == NULL) |
| 1170 | continue; |
| 1171 | runtime = substream->runtime; |
| 1172 | if (runtime->oss.channels != channels) { |
| 1173 | runtime->oss.params = 1; |
| 1174 | runtime->oss.channels = channels; |
| 1175 | } |
| 1176 | } |
| 1177 | return snd_pcm_oss_get_channels(pcm_oss_file); |
| 1178 | } |
| 1179 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1180 | 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] | 1181 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1182 | struct snd_pcm_substream *substream; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1183 | int err; |
| 1184 | |
| 1185 | if ((err = snd_pcm_oss_get_active_substream(pcm_oss_file, &substream)) < 0) |
| 1186 | return err; |
| 1187 | return substream->runtime->oss.channels; |
| 1188 | } |
| 1189 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1190 | 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] | 1191 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1192 | struct snd_pcm_substream *substream; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1193 | int err; |
| 1194 | |
| 1195 | if ((err = snd_pcm_oss_get_active_substream(pcm_oss_file, &substream)) < 0) |
| 1196 | return err; |
| 1197 | return substream->runtime->oss.period_bytes; |
| 1198 | } |
| 1199 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1200 | 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] | 1201 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1202 | struct snd_pcm_substream *substream; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1203 | int err; |
| 1204 | int direct; |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1205 | struct snd_pcm_hw_params *params; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1206 | unsigned int formats = 0; |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1207 | struct snd_mask format_mask; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1208 | int fmt; |
| 1209 | |
| 1210 | if ((err = snd_pcm_oss_get_active_substream(pcm_oss_file, &substream)) < 0) |
| 1211 | return err; |
Takashi Iwai | 060d77b | 2006-03-27 16:44:52 +0200 | [diff] [blame] | 1212 | if (atomic_read(&substream->runtime->mmap_count)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1213 | direct = 1; |
Takashi Iwai | 060d77b | 2006-03-27 16:44:52 +0200 | [diff] [blame] | 1214 | else |
| 1215 | direct = substream->oss.setup.direct; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1216 | if (!direct) |
| 1217 | return AFMT_MU_LAW | AFMT_U8 | |
| 1218 | AFMT_S16_LE | AFMT_S16_BE | |
| 1219 | AFMT_S8 | AFMT_U16_LE | |
| 1220 | AFMT_U16_BE; |
| 1221 | params = kmalloc(sizeof(*params), GFP_KERNEL); |
| 1222 | if (!params) |
| 1223 | return -ENOMEM; |
| 1224 | _snd_pcm_hw_params_any(params); |
| 1225 | err = snd_pcm_hw_refine(substream, params); |
| 1226 | format_mask = *hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT); |
| 1227 | kfree(params); |
| 1228 | snd_assert(err >= 0, return err); |
| 1229 | for (fmt = 0; fmt < 32; ++fmt) { |
| 1230 | if (snd_mask_test(&format_mask, fmt)) { |
| 1231 | int f = snd_pcm_oss_format_to(fmt); |
| 1232 | if (f >= 0) |
| 1233 | formats |= f; |
| 1234 | } |
| 1235 | } |
| 1236 | return formats; |
| 1237 | } |
| 1238 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1239 | 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] | 1240 | { |
| 1241 | int formats, idx; |
| 1242 | |
| 1243 | if (format != AFMT_QUERY) { |
| 1244 | formats = snd_pcm_oss_get_formats(pcm_oss_file); |
Steven Finney | 5c59e09 | 2006-04-13 12:49:31 +0200 | [diff] [blame] | 1245 | if (formats < 0) |
| 1246 | return formats; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1247 | if (!(formats & format)) |
| 1248 | format = AFMT_U8; |
| 1249 | for (idx = 1; idx >= 0; --idx) { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1250 | struct snd_pcm_substream *substream = pcm_oss_file->streams[idx]; |
| 1251 | struct snd_pcm_runtime *runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1252 | if (substream == NULL) |
| 1253 | continue; |
| 1254 | runtime = substream->runtime; |
| 1255 | if (runtime->oss.format != format) { |
| 1256 | runtime->oss.params = 1; |
| 1257 | runtime->oss.format = format; |
| 1258 | } |
| 1259 | } |
| 1260 | } |
| 1261 | return snd_pcm_oss_get_format(pcm_oss_file); |
| 1262 | } |
| 1263 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1264 | 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] | 1265 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1266 | struct snd_pcm_substream *substream; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1267 | int err; |
| 1268 | |
| 1269 | if ((err = snd_pcm_oss_get_active_substream(pcm_oss_file, &substream)) < 0) |
| 1270 | return err; |
| 1271 | return substream->runtime->oss.format; |
| 1272 | } |
| 1273 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1274 | 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] | 1275 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1276 | struct snd_pcm_runtime *runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1277 | |
| 1278 | if (substream == NULL) |
| 1279 | return 0; |
| 1280 | runtime = substream->runtime; |
| 1281 | if (subdivide == 0) { |
| 1282 | subdivide = runtime->oss.subdivision; |
| 1283 | if (subdivide == 0) |
| 1284 | subdivide = 1; |
| 1285 | return subdivide; |
| 1286 | } |
| 1287 | if (runtime->oss.subdivision || runtime->oss.fragshift) |
| 1288 | return -EINVAL; |
| 1289 | if (subdivide != 1 && subdivide != 2 && subdivide != 4 && |
| 1290 | subdivide != 8 && subdivide != 16) |
| 1291 | return -EINVAL; |
| 1292 | runtime->oss.subdivision = subdivide; |
| 1293 | runtime->oss.params = 1; |
| 1294 | return subdivide; |
| 1295 | } |
| 1296 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1297 | 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] | 1298 | { |
| 1299 | int err = -EINVAL, idx; |
| 1300 | |
| 1301 | for (idx = 1; idx >= 0; --idx) { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1302 | struct snd_pcm_substream *substream = pcm_oss_file->streams[idx]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1303 | if (substream == NULL) |
| 1304 | continue; |
| 1305 | if ((err = snd_pcm_oss_set_subdivide1(substream, subdivide)) < 0) |
| 1306 | return err; |
| 1307 | } |
| 1308 | return err; |
| 1309 | } |
| 1310 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1311 | 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] | 1312 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1313 | struct snd_pcm_runtime *runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1314 | |
| 1315 | if (substream == NULL) |
| 1316 | return 0; |
| 1317 | runtime = substream->runtime; |
| 1318 | if (runtime->oss.subdivision || runtime->oss.fragshift) |
| 1319 | return -EINVAL; |
| 1320 | runtime->oss.fragshift = val & 0xffff; |
| 1321 | runtime->oss.maxfrags = (val >> 16) & 0xffff; |
| 1322 | if (runtime->oss.fragshift < 4) /* < 16 */ |
| 1323 | runtime->oss.fragshift = 4; |
| 1324 | if (runtime->oss.maxfrags < 2) |
| 1325 | runtime->oss.maxfrags = 2; |
| 1326 | runtime->oss.params = 1; |
| 1327 | return 0; |
| 1328 | } |
| 1329 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1330 | 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] | 1331 | { |
| 1332 | int err = -EINVAL, idx; |
| 1333 | |
| 1334 | for (idx = 1; idx >= 0; --idx) { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1335 | struct snd_pcm_substream *substream = pcm_oss_file->streams[idx]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1336 | if (substream == NULL) |
| 1337 | continue; |
| 1338 | if ((err = snd_pcm_oss_set_fragment1(substream, val)) < 0) |
| 1339 | return err; |
| 1340 | } |
| 1341 | return err; |
| 1342 | } |
| 1343 | |
| 1344 | static int snd_pcm_oss_nonblock(struct file * file) |
| 1345 | { |
| 1346 | file->f_flags |= O_NONBLOCK; |
| 1347 | return 0; |
| 1348 | } |
| 1349 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1350 | 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] | 1351 | { |
| 1352 | |
| 1353 | if (substream == NULL) { |
| 1354 | res &= ~DSP_CAP_DUPLEX; |
| 1355 | return res; |
| 1356 | } |
| 1357 | #ifdef DSP_CAP_MULTI |
| 1358 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) |
| 1359 | if (substream->pstr->substream_count > 1) |
| 1360 | res |= DSP_CAP_MULTI; |
| 1361 | #endif |
| 1362 | /* DSP_CAP_REALTIME is set all times: */ |
| 1363 | /* all ALSA drivers can return actual pointer in ring buffer */ |
| 1364 | #if defined(DSP_CAP_REALTIME) && 0 |
| 1365 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1366 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1367 | if (runtime->info & (SNDRV_PCM_INFO_BLOCK_TRANSFER|SNDRV_PCM_INFO_BATCH)) |
| 1368 | res &= ~DSP_CAP_REALTIME; |
| 1369 | } |
| 1370 | #endif |
| 1371 | return res; |
| 1372 | } |
| 1373 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1374 | 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] | 1375 | { |
| 1376 | int result, idx; |
| 1377 | |
| 1378 | result = DSP_CAP_TRIGGER | DSP_CAP_MMAP | DSP_CAP_DUPLEX | DSP_CAP_REALTIME; |
| 1379 | for (idx = 0; idx < 2; idx++) { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1380 | struct snd_pcm_substream *substream = pcm_oss_file->streams[idx]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1381 | result = snd_pcm_oss_get_caps1(substream, result); |
| 1382 | } |
| 1383 | result |= 0x0001; /* revision - same as SB AWE 64 */ |
| 1384 | return result; |
| 1385 | } |
| 1386 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1387 | 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] | 1388 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1389 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1390 | snd_pcm_uframes_t appl_ptr; |
| 1391 | appl_ptr = hw_ptr + runtime->buffer_size; |
| 1392 | appl_ptr %= runtime->boundary; |
| 1393 | runtime->control->appl_ptr = appl_ptr; |
| 1394 | } |
| 1395 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1396 | 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] | 1397 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1398 | struct snd_pcm_runtime *runtime; |
| 1399 | struct snd_pcm_substream *psubstream = NULL, *csubstream = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1400 | int err, cmd; |
| 1401 | |
| 1402 | #ifdef OSS_DEBUG |
| 1403 | printk("pcm_oss: trigger = 0x%x\n", trigger); |
| 1404 | #endif |
| 1405 | |
| 1406 | psubstream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK]; |
| 1407 | csubstream = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE]; |
| 1408 | |
| 1409 | if (psubstream) { |
| 1410 | if ((err = snd_pcm_oss_make_ready(psubstream)) < 0) |
| 1411 | return err; |
| 1412 | } |
| 1413 | if (csubstream) { |
| 1414 | if ((err = snd_pcm_oss_make_ready(csubstream)) < 0) |
| 1415 | return err; |
| 1416 | } |
| 1417 | if (psubstream) { |
| 1418 | runtime = psubstream->runtime; |
| 1419 | if (trigger & PCM_ENABLE_OUTPUT) { |
| 1420 | if (runtime->oss.trigger) |
| 1421 | goto _skip1; |
| 1422 | if (atomic_read(&psubstream->runtime->mmap_count)) |
| 1423 | snd_pcm_oss_simulate_fill(psubstream, runtime->hw_ptr_interrupt); |
| 1424 | runtime->oss.trigger = 1; |
| 1425 | runtime->start_threshold = 1; |
| 1426 | cmd = SNDRV_PCM_IOCTL_START; |
| 1427 | } else { |
| 1428 | if (!runtime->oss.trigger) |
| 1429 | goto _skip1; |
| 1430 | runtime->oss.trigger = 0; |
| 1431 | runtime->start_threshold = runtime->boundary; |
| 1432 | cmd = SNDRV_PCM_IOCTL_DROP; |
| 1433 | runtime->oss.prepare = 1; |
| 1434 | } |
Takashi Iwai | bf1bbb5 | 2006-03-27 16:22:45 +0200 | [diff] [blame] | 1435 | err = snd_pcm_kernel_ioctl(psubstream, cmd, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1436 | if (err < 0) |
| 1437 | return err; |
| 1438 | } |
| 1439 | _skip1: |
| 1440 | if (csubstream) { |
| 1441 | runtime = csubstream->runtime; |
| 1442 | if (trigger & PCM_ENABLE_INPUT) { |
| 1443 | if (runtime->oss.trigger) |
| 1444 | goto _skip2; |
| 1445 | runtime->oss.trigger = 1; |
| 1446 | runtime->start_threshold = 1; |
| 1447 | cmd = SNDRV_PCM_IOCTL_START; |
| 1448 | } else { |
| 1449 | if (!runtime->oss.trigger) |
| 1450 | goto _skip2; |
| 1451 | runtime->oss.trigger = 0; |
| 1452 | runtime->start_threshold = runtime->boundary; |
| 1453 | cmd = SNDRV_PCM_IOCTL_DROP; |
| 1454 | runtime->oss.prepare = 1; |
| 1455 | } |
Takashi Iwai | bf1bbb5 | 2006-03-27 16:22:45 +0200 | [diff] [blame] | 1456 | err = snd_pcm_kernel_ioctl(csubstream, cmd, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1457 | if (err < 0) |
| 1458 | return err; |
| 1459 | } |
| 1460 | _skip2: |
| 1461 | return 0; |
| 1462 | } |
| 1463 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1464 | 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] | 1465 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1466 | struct snd_pcm_substream *psubstream = NULL, *csubstream = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1467 | int result = 0; |
| 1468 | |
| 1469 | psubstream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK]; |
| 1470 | csubstream = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE]; |
| 1471 | if (psubstream && psubstream->runtime && psubstream->runtime->oss.trigger) |
| 1472 | result |= PCM_ENABLE_OUTPUT; |
| 1473 | if (csubstream && csubstream->runtime && csubstream->runtime->oss.trigger) |
| 1474 | result |= PCM_ENABLE_INPUT; |
| 1475 | return result; |
| 1476 | } |
| 1477 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1478 | 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] | 1479 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1480 | struct snd_pcm_substream *substream; |
| 1481 | struct snd_pcm_runtime *runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1482 | snd_pcm_sframes_t delay; |
| 1483 | int err; |
| 1484 | |
| 1485 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK]; |
| 1486 | if (substream == NULL) |
| 1487 | return -EINVAL; |
| 1488 | if ((err = snd_pcm_oss_make_ready(substream)) < 0) |
| 1489 | return err; |
| 1490 | runtime = substream->runtime; |
| 1491 | if (runtime->oss.params || runtime->oss.prepare) |
| 1492 | return 0; |
Takashi Iwai | bf1bbb5 | 2006-03-27 16:22:45 +0200 | [diff] [blame] | 1493 | err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DELAY, &delay); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1494 | if (err == -EPIPE) |
| 1495 | delay = 0; /* hack for broken OSS applications */ |
| 1496 | else if (err < 0) |
| 1497 | return err; |
| 1498 | return snd_pcm_oss_bytes(substream, delay); |
| 1499 | } |
| 1500 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1501 | 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] | 1502 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1503 | struct snd_pcm_substream *substream; |
| 1504 | struct snd_pcm_runtime *runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1505 | snd_pcm_sframes_t delay; |
| 1506 | int fixup; |
| 1507 | struct count_info info; |
| 1508 | int err; |
| 1509 | |
| 1510 | if (_info == NULL) |
| 1511 | return -EFAULT; |
| 1512 | substream = pcm_oss_file->streams[stream]; |
| 1513 | if (substream == NULL) |
| 1514 | return -EINVAL; |
| 1515 | if ((err = snd_pcm_oss_make_ready(substream)) < 0) |
| 1516 | return err; |
| 1517 | runtime = substream->runtime; |
| 1518 | if (runtime->oss.params || runtime->oss.prepare) { |
| 1519 | memset(&info, 0, sizeof(info)); |
| 1520 | if (copy_to_user(_info, &info, sizeof(info))) |
| 1521 | return -EFAULT; |
| 1522 | return 0; |
| 1523 | } |
| 1524 | if (stream == SNDRV_PCM_STREAM_PLAYBACK) { |
| 1525 | err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DELAY, &delay); |
| 1526 | if (err == -EPIPE || err == -ESTRPIPE || (! err && delay < 0)) { |
| 1527 | err = 0; |
| 1528 | delay = 0; |
| 1529 | fixup = 0; |
| 1530 | } else { |
| 1531 | fixup = runtime->oss.buffer_used; |
| 1532 | } |
| 1533 | } else { |
| 1534 | err = snd_pcm_oss_capture_position_fixup(substream, &delay); |
| 1535 | fixup = -runtime->oss.buffer_used; |
| 1536 | } |
| 1537 | if (err < 0) |
| 1538 | return err; |
| 1539 | info.ptr = snd_pcm_oss_bytes(substream, runtime->status->hw_ptr % runtime->buffer_size); |
| 1540 | if (atomic_read(&runtime->mmap_count)) { |
| 1541 | snd_pcm_sframes_t n; |
| 1542 | n = (delay = runtime->hw_ptr_interrupt) - runtime->oss.prev_hw_ptr_interrupt; |
| 1543 | if (n < 0) |
| 1544 | n += runtime->boundary; |
| 1545 | info.blocks = n / runtime->period_size; |
| 1546 | runtime->oss.prev_hw_ptr_interrupt = delay; |
| 1547 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) |
| 1548 | snd_pcm_oss_simulate_fill(substream, delay); |
| 1549 | info.bytes = snd_pcm_oss_bytes(substream, runtime->status->hw_ptr) & INT_MAX; |
| 1550 | } else { |
Jaroslav Kysela | 5ac0fab | 2005-05-31 16:59:39 +0200 | [diff] [blame] | 1551 | delay = snd_pcm_oss_bytes(substream, delay); |
Jaroslav Kysela | fb4bd0a | 2005-05-31 15:44:23 +0200 | [diff] [blame] | 1552 | if (stream == SNDRV_PCM_STREAM_PLAYBACK) { |
Takashi Iwai | 060d77b | 2006-03-27 16:44:52 +0200 | [diff] [blame] | 1553 | if (substream->oss.setup.buggyptr) |
Takashi Iwai | 10f69f9 | 2005-09-08 13:48:34 +0200 | [diff] [blame] | 1554 | info.blocks = (runtime->oss.buffer_bytes - delay - fixup) / runtime->oss.period_bytes; |
| 1555 | else |
| 1556 | info.blocks = (delay + fixup) / runtime->oss.period_bytes; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1557 | info.bytes = (runtime->oss.bytes - delay) & INT_MAX; |
Jaroslav Kysela | fb4bd0a | 2005-05-31 15:44:23 +0200 | [diff] [blame] | 1558 | } else { |
Jaroslav Kysela | 5ac0fab | 2005-05-31 16:59:39 +0200 | [diff] [blame] | 1559 | delay += fixup; |
| 1560 | info.blocks = delay / runtime->oss.period_bytes; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1561 | info.bytes = (runtime->oss.bytes + delay) & INT_MAX; |
Jaroslav Kysela | fb4bd0a | 2005-05-31 15:44:23 +0200 | [diff] [blame] | 1562 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1563 | } |
| 1564 | if (copy_to_user(_info, &info, sizeof(info))) |
| 1565 | return -EFAULT; |
| 1566 | return 0; |
| 1567 | } |
| 1568 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1569 | 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] | 1570 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1571 | struct snd_pcm_substream *substream; |
| 1572 | struct snd_pcm_runtime *runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1573 | snd_pcm_sframes_t avail; |
| 1574 | int fixup; |
| 1575 | struct audio_buf_info info; |
| 1576 | int err; |
| 1577 | |
| 1578 | if (_info == NULL) |
| 1579 | return -EFAULT; |
| 1580 | substream = pcm_oss_file->streams[stream]; |
| 1581 | if (substream == NULL) |
| 1582 | return -EINVAL; |
| 1583 | runtime = substream->runtime; |
| 1584 | |
| 1585 | if (runtime->oss.params && |
| 1586 | (err = snd_pcm_oss_change_params(substream)) < 0) |
| 1587 | return err; |
| 1588 | |
| 1589 | info.fragsize = runtime->oss.period_bytes; |
| 1590 | info.fragstotal = runtime->periods; |
| 1591 | if (runtime->oss.prepare) { |
| 1592 | if (stream == SNDRV_PCM_STREAM_PLAYBACK) { |
| 1593 | info.bytes = runtime->oss.period_bytes * runtime->oss.periods; |
| 1594 | info.fragments = runtime->oss.periods; |
| 1595 | } else { |
| 1596 | info.bytes = 0; |
| 1597 | info.fragments = 0; |
| 1598 | } |
| 1599 | } else { |
| 1600 | if (stream == SNDRV_PCM_STREAM_PLAYBACK) { |
| 1601 | err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DELAY, &avail); |
| 1602 | if (err == -EPIPE || err == -ESTRPIPE || (! err && avail < 0)) { |
| 1603 | avail = runtime->buffer_size; |
| 1604 | err = 0; |
| 1605 | fixup = 0; |
| 1606 | } else { |
| 1607 | avail = runtime->buffer_size - avail; |
| 1608 | fixup = -runtime->oss.buffer_used; |
| 1609 | } |
| 1610 | } else { |
| 1611 | err = snd_pcm_oss_capture_position_fixup(substream, &avail); |
| 1612 | fixup = runtime->oss.buffer_used; |
| 1613 | } |
| 1614 | if (err < 0) |
| 1615 | return err; |
| 1616 | info.bytes = snd_pcm_oss_bytes(substream, avail) + fixup; |
| 1617 | info.fragments = info.bytes / runtime->oss.period_bytes; |
| 1618 | } |
| 1619 | |
| 1620 | #ifdef OSS_DEBUG |
| 1621 | printk("pcm_oss: space: bytes = %i, fragments = %i, fragstotal = %i, fragsize = %i\n", info.bytes, info.fragments, info.fragstotal, info.fragsize); |
| 1622 | #endif |
| 1623 | if (copy_to_user(_info, &info, sizeof(info))) |
| 1624 | return -EFAULT; |
| 1625 | return 0; |
| 1626 | } |
| 1627 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1628 | 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] | 1629 | { |
| 1630 | // it won't be probably implemented |
| 1631 | // snd_printd("TODO: snd_pcm_oss_get_mapbuf\n"); |
| 1632 | return -EINVAL; |
| 1633 | } |
| 1634 | |
Takashi Iwai | 060d77b | 2006-03-27 16:44:52 +0200 | [diff] [blame] | 1635 | static const char *strip_task_path(const char *path) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1636 | { |
Takashi Iwai | 060d77b | 2006-03-27 16:44:52 +0200 | [diff] [blame] | 1637 | const char *ptr, *ptrl = NULL; |
| 1638 | for (ptr = path; *ptr; ptr++) { |
| 1639 | if (*ptr == '/') |
| 1640 | ptrl = ptr + 1; |
| 1641 | } |
| 1642 | return ptrl; |
| 1643 | } |
| 1644 | |
| 1645 | static void snd_pcm_oss_look_for_setup(struct snd_pcm *pcm, int stream, |
| 1646 | const char *task_name, |
| 1647 | struct snd_pcm_oss_setup *rsetup) |
| 1648 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1649 | struct snd_pcm_oss_setup *setup; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1650 | |
Ingo Molnar | 1a60d4c | 2006-01-16 16:29:08 +0100 | [diff] [blame] | 1651 | mutex_lock(&pcm->streams[stream].oss.setup_mutex); |
Takashi Iwai | 060d77b | 2006-03-27 16:44:52 +0200 | [diff] [blame] | 1652 | do { |
| 1653 | for (setup = pcm->streams[stream].oss.setup_list; setup; |
| 1654 | setup = setup->next) { |
| 1655 | if (!strcmp(setup->task_name, task_name)) |
| 1656 | goto out; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1657 | } |
Takashi Iwai | 060d77b | 2006-03-27 16:44:52 +0200 | [diff] [blame] | 1658 | } while ((task_name = strip_task_path(task_name)) != NULL); |
| 1659 | out: |
| 1660 | if (setup) |
| 1661 | *rsetup = *setup; |
Ingo Molnar | 1a60d4c | 2006-01-16 16:29:08 +0100 | [diff] [blame] | 1662 | mutex_unlock(&pcm->streams[stream].oss.setup_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1663 | } |
| 1664 | |
Takashi Iwai | 3bf75f9 | 2006-03-27 16:40:49 +0200 | [diff] [blame] | 1665 | static void snd_pcm_oss_release_substream(struct snd_pcm_substream *substream) |
| 1666 | { |
| 1667 | struct snd_pcm_runtime *runtime; |
| 1668 | runtime = substream->runtime; |
| 1669 | vfree(runtime->oss.buffer); |
| 1670 | runtime->oss.buffer = NULL; |
| 1671 | #ifdef CONFIG_SND_PCM_OSS_PLUGINS |
| 1672 | snd_pcm_oss_plugin_clear(substream); |
| 1673 | #endif |
| 1674 | substream->oss.oss = 0; |
| 1675 | } |
| 1676 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1677 | static void snd_pcm_oss_init_substream(struct snd_pcm_substream *substream, |
| 1678 | struct snd_pcm_oss_setup *setup, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1679 | int minor) |
| 1680 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1681 | struct snd_pcm_runtime *runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1682 | |
| 1683 | substream->oss.oss = 1; |
Takashi Iwai | 060d77b | 2006-03-27 16:44:52 +0200 | [diff] [blame] | 1684 | substream->oss.setup = *setup; |
Takashi Iwai | 3bf75f9 | 2006-03-27 16:40:49 +0200 | [diff] [blame] | 1685 | if (setup->nonblock) |
| 1686 | substream->ffile->f_flags |= O_NONBLOCK; |
Takashi Iwai | 1576274 | 2006-04-06 19:47:42 +0200 | [diff] [blame] | 1687 | else if (setup->block) |
Takashi Iwai | 3bf75f9 | 2006-03-27 16:40:49 +0200 | [diff] [blame] | 1688 | substream->ffile->f_flags &= ~O_NONBLOCK; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1689 | runtime = substream->runtime; |
| 1690 | runtime->oss.params = 1; |
| 1691 | runtime->oss.trigger = 1; |
| 1692 | runtime->oss.rate = 8000; |
| 1693 | switch (SNDRV_MINOR_OSS_DEVICE(minor)) { |
| 1694 | case SNDRV_MINOR_OSS_PCM_8: |
| 1695 | runtime->oss.format = AFMT_U8; |
| 1696 | break; |
| 1697 | case SNDRV_MINOR_OSS_PCM_16: |
| 1698 | runtime->oss.format = AFMT_S16_LE; |
| 1699 | break; |
| 1700 | default: |
| 1701 | runtime->oss.format = AFMT_MU_LAW; |
| 1702 | } |
| 1703 | runtime->oss.channels = 1; |
| 1704 | runtime->oss.fragshift = 0; |
| 1705 | runtime->oss.maxfrags = 0; |
| 1706 | runtime->oss.subdivision = 0; |
Takashi Iwai | 3bf75f9 | 2006-03-27 16:40:49 +0200 | [diff] [blame] | 1707 | substream->pcm_release = snd_pcm_oss_release_substream; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1708 | } |
| 1709 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1710 | 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] | 1711 | { |
| 1712 | int cidx; |
| 1713 | snd_assert(pcm_oss_file != NULL, return -ENXIO); |
| 1714 | for (cidx = 0; cidx < 2; ++cidx) { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1715 | struct snd_pcm_substream *substream = pcm_oss_file->streams[cidx]; |
Takashi Iwai | 3bf75f9 | 2006-03-27 16:40:49 +0200 | [diff] [blame] | 1716 | if (substream) |
| 1717 | snd_pcm_release_substream(substream); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1718 | } |
| 1719 | kfree(pcm_oss_file); |
| 1720 | return 0; |
| 1721 | } |
| 1722 | |
| 1723 | static int snd_pcm_oss_open_file(struct file *file, |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1724 | struct snd_pcm *pcm, |
| 1725 | struct snd_pcm_oss_file **rpcm_oss_file, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1726 | int minor, |
Takashi Iwai | 060d77b | 2006-03-27 16:44:52 +0200 | [diff] [blame] | 1727 | struct snd_pcm_oss_setup *setup) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1728 | { |
Takashi Iwai | 3bf75f9 | 2006-03-27 16:40:49 +0200 | [diff] [blame] | 1729 | int idx, err; |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1730 | struct snd_pcm_oss_file *pcm_oss_file; |
Takashi Iwai | 3bf75f9 | 2006-03-27 16:40:49 +0200 | [diff] [blame] | 1731 | struct snd_pcm_substream *substream; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1732 | unsigned int f_mode = file->f_mode; |
| 1733 | |
| 1734 | snd_assert(rpcm_oss_file != NULL, return -EINVAL); |
| 1735 | *rpcm_oss_file = NULL; |
| 1736 | |
Takashi Iwai | ca2c096 | 2005-09-09 14:20:23 +0200 | [diff] [blame] | 1737 | pcm_oss_file = kzalloc(sizeof(*pcm_oss_file), GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1738 | if (pcm_oss_file == NULL) |
| 1739 | return -ENOMEM; |
| 1740 | |
| 1741 | if ((f_mode & (FMODE_WRITE|FMODE_READ)) == (FMODE_WRITE|FMODE_READ) && |
| 1742 | (pcm->info_flags & SNDRV_PCM_INFO_HALF_DUPLEX)) |
| 1743 | f_mode = FMODE_WRITE; |
Takashi Iwai | 3bf75f9 | 2006-03-27 16:40:49 +0200 | [diff] [blame] | 1744 | |
| 1745 | for (idx = 0; idx < 2; idx++) { |
Takashi Iwai | 060d77b | 2006-03-27 16:44:52 +0200 | [diff] [blame] | 1746 | if (setup[idx].disable) |
Takashi Iwai | 3bf75f9 | 2006-03-27 16:40:49 +0200 | [diff] [blame] | 1747 | continue; |
| 1748 | if (idx == SNDRV_PCM_STREAM_PLAYBACK) { |
| 1749 | if (! (f_mode & FMODE_WRITE)) |
| 1750 | continue; |
| 1751 | } else { |
| 1752 | if (! (f_mode & FMODE_READ)) |
| 1753 | continue; |
| 1754 | } |
| 1755 | err = snd_pcm_open_substream(pcm, idx, file, &substream); |
| 1756 | if (err < 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1757 | snd_pcm_oss_release_file(pcm_oss_file); |
| 1758 | return err; |
| 1759 | } |
Takashi Iwai | 3bf75f9 | 2006-03-27 16:40:49 +0200 | [diff] [blame] | 1760 | |
| 1761 | pcm_oss_file->streams[idx] = substream; |
Takashi Iwai | 1576274 | 2006-04-06 19:47:42 +0200 | [diff] [blame] | 1762 | substream->file = pcm_oss_file; |
Takashi Iwai | 060d77b | 2006-03-27 16:44:52 +0200 | [diff] [blame] | 1763 | snd_pcm_oss_init_substream(substream, &setup[idx], minor); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1764 | } |
| 1765 | |
OGAWA Hirofumi | bbdc1b7 | 2006-04-06 19:42:40 +0200 | [diff] [blame] | 1766 | if (!pcm_oss_file->streams[0] && !pcm_oss_file->streams[1]) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1767 | snd_pcm_oss_release_file(pcm_oss_file); |
| 1768 | return -EINVAL; |
| 1769 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1770 | |
| 1771 | file->private_data = pcm_oss_file; |
| 1772 | *rpcm_oss_file = pcm_oss_file; |
| 1773 | return 0; |
| 1774 | } |
| 1775 | |
| 1776 | |
Takashi Iwai | 93f2e37 | 2005-10-10 11:51:55 +0200 | [diff] [blame] | 1777 | static int snd_task_name(struct task_struct *task, char *name, size_t size) |
| 1778 | { |
| 1779 | unsigned int idx; |
| 1780 | |
| 1781 | snd_assert(task != NULL && name != NULL && size >= 2, return -EINVAL); |
| 1782 | for (idx = 0; idx < sizeof(task->comm) && idx + 1 < size; idx++) |
| 1783 | name[idx] = task->comm[idx]; |
| 1784 | name[idx] = '\0'; |
| 1785 | return 0; |
| 1786 | } |
| 1787 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1788 | static int snd_pcm_oss_open(struct inode *inode, struct file *file) |
| 1789 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1790 | int err; |
| 1791 | char task_name[32]; |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1792 | struct snd_pcm *pcm; |
| 1793 | struct snd_pcm_oss_file *pcm_oss_file; |
Takashi Iwai | 060d77b | 2006-03-27 16:44:52 +0200 | [diff] [blame] | 1794 | struct snd_pcm_oss_setup setup[2]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1795 | int nonblock; |
| 1796 | wait_queue_t wait; |
| 1797 | |
Clemens Ladisch | f87135f | 2005-11-20 14:06:59 +0100 | [diff] [blame] | 1798 | pcm = snd_lookup_oss_minor_data(iminor(inode), |
| 1799 | SNDRV_OSS_DEVICE_TYPE_PCM); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1800 | if (pcm == NULL) { |
| 1801 | err = -ENODEV; |
| 1802 | goto __error1; |
| 1803 | } |
| 1804 | err = snd_card_file_add(pcm->card, file); |
| 1805 | if (err < 0) |
| 1806 | goto __error1; |
| 1807 | if (!try_module_get(pcm->card->module)) { |
| 1808 | err = -EFAULT; |
| 1809 | goto __error2; |
| 1810 | } |
| 1811 | if (snd_task_name(current, task_name, sizeof(task_name)) < 0) { |
| 1812 | err = -EFAULT; |
| 1813 | goto __error; |
| 1814 | } |
Takashi Iwai | 1576274 | 2006-04-06 19:47:42 +0200 | [diff] [blame] | 1815 | memset(setup, 0, sizeof(setup)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1816 | if (file->f_mode & FMODE_WRITE) |
Takashi Iwai | 060d77b | 2006-03-27 16:44:52 +0200 | [diff] [blame] | 1817 | snd_pcm_oss_look_for_setup(pcm, SNDRV_PCM_STREAM_PLAYBACK, |
| 1818 | task_name, &setup[0]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1819 | if (file->f_mode & FMODE_READ) |
Takashi Iwai | 060d77b | 2006-03-27 16:44:52 +0200 | [diff] [blame] | 1820 | snd_pcm_oss_look_for_setup(pcm, SNDRV_PCM_STREAM_CAPTURE, |
| 1821 | task_name, &setup[1]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1822 | |
| 1823 | nonblock = !!(file->f_flags & O_NONBLOCK); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1824 | if (!nonblock) |
| 1825 | nonblock = nonblock_open; |
| 1826 | |
| 1827 | init_waitqueue_entry(&wait, current); |
| 1828 | add_wait_queue(&pcm->open_wait, &wait); |
Ingo Molnar | 1a60d4c | 2006-01-16 16:29:08 +0100 | [diff] [blame] | 1829 | mutex_lock(&pcm->open_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1830 | while (1) { |
| 1831 | err = snd_pcm_oss_open_file(file, pcm, &pcm_oss_file, |
Takashi Iwai | 3bf75f9 | 2006-03-27 16:40:49 +0200 | [diff] [blame] | 1832 | iminor(inode), setup); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1833 | if (err >= 0) |
| 1834 | break; |
| 1835 | if (err == -EAGAIN) { |
| 1836 | if (nonblock) { |
| 1837 | err = -EBUSY; |
| 1838 | break; |
| 1839 | } |
| 1840 | } else |
| 1841 | break; |
| 1842 | set_current_state(TASK_INTERRUPTIBLE); |
Ingo Molnar | 1a60d4c | 2006-01-16 16:29:08 +0100 | [diff] [blame] | 1843 | mutex_unlock(&pcm->open_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1844 | schedule(); |
Ingo Molnar | 1a60d4c | 2006-01-16 16:29:08 +0100 | [diff] [blame] | 1845 | mutex_lock(&pcm->open_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1846 | if (signal_pending(current)) { |
| 1847 | err = -ERESTARTSYS; |
| 1848 | break; |
| 1849 | } |
| 1850 | } |
| 1851 | remove_wait_queue(&pcm->open_wait, &wait); |
Ingo Molnar | 1a60d4c | 2006-01-16 16:29:08 +0100 | [diff] [blame] | 1852 | mutex_unlock(&pcm->open_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1853 | if (err < 0) |
| 1854 | goto __error; |
| 1855 | return err; |
| 1856 | |
| 1857 | __error: |
| 1858 | module_put(pcm->card->module); |
| 1859 | __error2: |
| 1860 | snd_card_file_remove(pcm->card, file); |
| 1861 | __error1: |
| 1862 | return err; |
| 1863 | } |
| 1864 | |
| 1865 | static int snd_pcm_oss_release(struct inode *inode, struct file *file) |
| 1866 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1867 | struct snd_pcm *pcm; |
| 1868 | struct snd_pcm_substream *substream; |
| 1869 | struct snd_pcm_oss_file *pcm_oss_file; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1870 | |
| 1871 | pcm_oss_file = file->private_data; |
| 1872 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK]; |
| 1873 | if (substream == NULL) |
| 1874 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE]; |
| 1875 | snd_assert(substream != NULL, return -ENXIO); |
| 1876 | pcm = substream->pcm; |
| 1877 | snd_pcm_oss_sync(pcm_oss_file); |
Ingo Molnar | 1a60d4c | 2006-01-16 16:29:08 +0100 | [diff] [blame] | 1878 | mutex_lock(&pcm->open_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1879 | snd_pcm_oss_release_file(pcm_oss_file); |
Ingo Molnar | 1a60d4c | 2006-01-16 16:29:08 +0100 | [diff] [blame] | 1880 | mutex_unlock(&pcm->open_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1881 | wake_up(&pcm->open_wait); |
| 1882 | module_put(pcm->card->module); |
| 1883 | snd_card_file_remove(pcm->card, file); |
| 1884 | return 0; |
| 1885 | } |
| 1886 | |
| 1887 | static long snd_pcm_oss_ioctl(struct file *file, unsigned int cmd, unsigned long arg) |
| 1888 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1889 | struct snd_pcm_oss_file *pcm_oss_file; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1890 | int __user *p = (int __user *)arg; |
| 1891 | int res; |
| 1892 | |
| 1893 | pcm_oss_file = file->private_data; |
| 1894 | if (cmd == OSS_GETVERSION) |
| 1895 | return put_user(SNDRV_OSS_VERSION, p); |
| 1896 | if (cmd == OSS_ALSAEMULVER) |
| 1897 | return put_user(1, p); |
| 1898 | #if defined(CONFIG_SND_MIXER_OSS) || (defined(MODULE) && defined(CONFIG_SND_MIXER_OSS_MODULE)) |
| 1899 | if (((cmd >> 8) & 0xff) == 'M') { /* mixer ioctl - for OSS compatibility */ |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 1900 | struct snd_pcm_substream *substream; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1901 | int idx; |
| 1902 | for (idx = 0; idx < 2; ++idx) { |
| 1903 | substream = pcm_oss_file->streams[idx]; |
| 1904 | if (substream != NULL) |
| 1905 | break; |
| 1906 | } |
| 1907 | snd_assert(substream != NULL, return -ENXIO); |
| 1908 | return snd_mixer_oss_ioctl_card(substream->pcm->card, cmd, arg); |
| 1909 | } |
| 1910 | #endif |
| 1911 | if (((cmd >> 8) & 0xff) != 'P') |
| 1912 | return -EINVAL; |
| 1913 | #ifdef OSS_DEBUG |
| 1914 | printk("pcm_oss: ioctl = 0x%x\n", cmd); |
| 1915 | #endif |
| 1916 | switch (cmd) { |
| 1917 | case SNDCTL_DSP_RESET: |
| 1918 | return snd_pcm_oss_reset(pcm_oss_file); |
| 1919 | case SNDCTL_DSP_SYNC: |
| 1920 | return snd_pcm_oss_sync(pcm_oss_file); |
| 1921 | case SNDCTL_DSP_SPEED: |
| 1922 | if (get_user(res, p)) |
| 1923 | return -EFAULT; |
| 1924 | if ((res = snd_pcm_oss_set_rate(pcm_oss_file, res))<0) |
| 1925 | return res; |
| 1926 | return put_user(res, p); |
| 1927 | case SOUND_PCM_READ_RATE: |
| 1928 | res = snd_pcm_oss_get_rate(pcm_oss_file); |
| 1929 | if (res < 0) |
| 1930 | return res; |
| 1931 | return put_user(res, p); |
| 1932 | case SNDCTL_DSP_STEREO: |
| 1933 | if (get_user(res, p)) |
| 1934 | return -EFAULT; |
| 1935 | res = res > 0 ? 2 : 1; |
| 1936 | if ((res = snd_pcm_oss_set_channels(pcm_oss_file, res)) < 0) |
| 1937 | return res; |
| 1938 | return put_user(--res, p); |
| 1939 | case SNDCTL_DSP_GETBLKSIZE: |
| 1940 | res = snd_pcm_oss_get_block_size(pcm_oss_file); |
| 1941 | if (res < 0) |
| 1942 | return res; |
| 1943 | return put_user(res, p); |
| 1944 | case SNDCTL_DSP_SETFMT: |
| 1945 | if (get_user(res, p)) |
| 1946 | return -EFAULT; |
| 1947 | res = snd_pcm_oss_set_format(pcm_oss_file, res); |
| 1948 | if (res < 0) |
| 1949 | return res; |
| 1950 | return put_user(res, p); |
| 1951 | case SOUND_PCM_READ_BITS: |
| 1952 | res = snd_pcm_oss_get_format(pcm_oss_file); |
| 1953 | if (res < 0) |
| 1954 | return res; |
| 1955 | return put_user(res, p); |
| 1956 | case SNDCTL_DSP_CHANNELS: |
| 1957 | if (get_user(res, p)) |
| 1958 | return -EFAULT; |
| 1959 | res = snd_pcm_oss_set_channels(pcm_oss_file, res); |
| 1960 | if (res < 0) |
| 1961 | return res; |
| 1962 | return put_user(res, p); |
| 1963 | case SOUND_PCM_READ_CHANNELS: |
| 1964 | res = snd_pcm_oss_get_channels(pcm_oss_file); |
| 1965 | if (res < 0) |
| 1966 | return res; |
| 1967 | return put_user(res, p); |
| 1968 | case SOUND_PCM_WRITE_FILTER: |
| 1969 | case SOUND_PCM_READ_FILTER: |
| 1970 | return -EIO; |
| 1971 | case SNDCTL_DSP_POST: |
| 1972 | return snd_pcm_oss_post(pcm_oss_file); |
| 1973 | case SNDCTL_DSP_SUBDIVIDE: |
| 1974 | if (get_user(res, p)) |
| 1975 | return -EFAULT; |
| 1976 | res = snd_pcm_oss_set_subdivide(pcm_oss_file, res); |
| 1977 | if (res < 0) |
| 1978 | return res; |
| 1979 | return put_user(res, p); |
| 1980 | case SNDCTL_DSP_SETFRAGMENT: |
| 1981 | if (get_user(res, p)) |
| 1982 | return -EFAULT; |
| 1983 | return snd_pcm_oss_set_fragment(pcm_oss_file, res); |
| 1984 | case SNDCTL_DSP_GETFMTS: |
| 1985 | res = snd_pcm_oss_get_formats(pcm_oss_file); |
| 1986 | if (res < 0) |
| 1987 | return res; |
| 1988 | return put_user(res, p); |
| 1989 | case SNDCTL_DSP_GETOSPACE: |
| 1990 | case SNDCTL_DSP_GETISPACE: |
| 1991 | return snd_pcm_oss_get_space(pcm_oss_file, |
| 1992 | cmd == SNDCTL_DSP_GETISPACE ? |
| 1993 | SNDRV_PCM_STREAM_CAPTURE : SNDRV_PCM_STREAM_PLAYBACK, |
| 1994 | (struct audio_buf_info __user *) arg); |
| 1995 | case SNDCTL_DSP_NONBLOCK: |
| 1996 | return snd_pcm_oss_nonblock(file); |
| 1997 | case SNDCTL_DSP_GETCAPS: |
| 1998 | res = snd_pcm_oss_get_caps(pcm_oss_file); |
| 1999 | if (res < 0) |
| 2000 | return res; |
| 2001 | return put_user(res, p); |
| 2002 | case SNDCTL_DSP_GETTRIGGER: |
| 2003 | res = snd_pcm_oss_get_trigger(pcm_oss_file); |
| 2004 | if (res < 0) |
| 2005 | return res; |
| 2006 | return put_user(res, p); |
| 2007 | case SNDCTL_DSP_SETTRIGGER: |
| 2008 | if (get_user(res, p)) |
| 2009 | return -EFAULT; |
| 2010 | return snd_pcm_oss_set_trigger(pcm_oss_file, res); |
| 2011 | case SNDCTL_DSP_GETIPTR: |
| 2012 | case SNDCTL_DSP_GETOPTR: |
| 2013 | return snd_pcm_oss_get_ptr(pcm_oss_file, |
| 2014 | cmd == SNDCTL_DSP_GETIPTR ? |
| 2015 | SNDRV_PCM_STREAM_CAPTURE : SNDRV_PCM_STREAM_PLAYBACK, |
| 2016 | (struct count_info __user *) arg); |
| 2017 | case SNDCTL_DSP_MAPINBUF: |
| 2018 | case SNDCTL_DSP_MAPOUTBUF: |
| 2019 | return snd_pcm_oss_get_mapbuf(pcm_oss_file, |
| 2020 | cmd == SNDCTL_DSP_MAPINBUF ? |
| 2021 | SNDRV_PCM_STREAM_CAPTURE : SNDRV_PCM_STREAM_PLAYBACK, |
| 2022 | (struct buffmem_desc __user *) arg); |
| 2023 | case SNDCTL_DSP_SETSYNCRO: |
| 2024 | /* stop DMA now.. */ |
| 2025 | return 0; |
| 2026 | case SNDCTL_DSP_SETDUPLEX: |
| 2027 | if (snd_pcm_oss_get_caps(pcm_oss_file) & DSP_CAP_DUPLEX) |
| 2028 | return 0; |
| 2029 | return -EIO; |
| 2030 | case SNDCTL_DSP_GETODELAY: |
| 2031 | res = snd_pcm_oss_get_odelay(pcm_oss_file); |
| 2032 | if (res < 0) { |
| 2033 | /* it's for sure, some broken apps don't check for error codes */ |
| 2034 | put_user(0, p); |
| 2035 | return res; |
| 2036 | } |
| 2037 | return put_user(res, p); |
| 2038 | case SNDCTL_DSP_PROFILE: |
| 2039 | return 0; /* silently ignore */ |
| 2040 | default: |
| 2041 | snd_printd("pcm_oss: unknown command = 0x%x\n", cmd); |
| 2042 | } |
| 2043 | return -EINVAL; |
| 2044 | } |
| 2045 | |
| 2046 | #ifdef CONFIG_COMPAT |
| 2047 | /* all compatible */ |
| 2048 | #define snd_pcm_oss_ioctl_compat snd_pcm_oss_ioctl |
| 2049 | #else |
| 2050 | #define snd_pcm_oss_ioctl_compat NULL |
| 2051 | #endif |
| 2052 | |
| 2053 | static ssize_t snd_pcm_oss_read(struct file *file, char __user *buf, size_t count, loff_t *offset) |
| 2054 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2055 | struct snd_pcm_oss_file *pcm_oss_file; |
| 2056 | struct snd_pcm_substream *substream; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2057 | |
| 2058 | pcm_oss_file = file->private_data; |
| 2059 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE]; |
| 2060 | if (substream == NULL) |
| 2061 | return -ENXIO; |
| 2062 | #ifndef OSS_DEBUG |
| 2063 | return snd_pcm_oss_read1(substream, buf, count); |
| 2064 | #else |
| 2065 | { |
| 2066 | ssize_t res = snd_pcm_oss_read1(substream, buf, count); |
| 2067 | printk("pcm_oss: read %li bytes (returned %li bytes)\n", (long)count, (long)res); |
| 2068 | return res; |
| 2069 | } |
| 2070 | #endif |
| 2071 | } |
| 2072 | |
| 2073 | static ssize_t snd_pcm_oss_write(struct file *file, const char __user *buf, size_t count, loff_t *offset) |
| 2074 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2075 | struct snd_pcm_oss_file *pcm_oss_file; |
| 2076 | struct snd_pcm_substream *substream; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2077 | long result; |
| 2078 | |
| 2079 | pcm_oss_file = file->private_data; |
| 2080 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK]; |
| 2081 | if (substream == NULL) |
| 2082 | return -ENXIO; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2083 | result = snd_pcm_oss_write1(substream, buf, count); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2084 | #ifdef OSS_DEBUG |
| 2085 | printk("pcm_oss: write %li bytes (wrote %li bytes)\n", (long)count, (long)result); |
| 2086 | #endif |
| 2087 | return result; |
| 2088 | } |
| 2089 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2090 | static int snd_pcm_oss_playback_ready(struct snd_pcm_substream *substream) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2091 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2092 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2093 | if (atomic_read(&runtime->mmap_count)) |
| 2094 | return runtime->oss.prev_hw_ptr_interrupt != runtime->hw_ptr_interrupt; |
| 2095 | else |
| 2096 | return snd_pcm_playback_avail(runtime) >= runtime->oss.period_frames; |
| 2097 | } |
| 2098 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2099 | static int snd_pcm_oss_capture_ready(struct snd_pcm_substream *substream) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2100 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2101 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2102 | if (atomic_read(&runtime->mmap_count)) |
| 2103 | return runtime->oss.prev_hw_ptr_interrupt != runtime->hw_ptr_interrupt; |
| 2104 | else |
| 2105 | return snd_pcm_capture_avail(runtime) >= runtime->oss.period_frames; |
| 2106 | } |
| 2107 | |
| 2108 | static unsigned int snd_pcm_oss_poll(struct file *file, poll_table * wait) |
| 2109 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2110 | struct snd_pcm_oss_file *pcm_oss_file; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2111 | unsigned int mask; |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2112 | struct snd_pcm_substream *psubstream = NULL, *csubstream = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2113 | |
| 2114 | pcm_oss_file = file->private_data; |
| 2115 | |
| 2116 | psubstream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK]; |
| 2117 | csubstream = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE]; |
| 2118 | |
| 2119 | mask = 0; |
| 2120 | if (psubstream != NULL) { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2121 | struct snd_pcm_runtime *runtime = psubstream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2122 | poll_wait(file, &runtime->sleep, wait); |
| 2123 | snd_pcm_stream_lock_irq(psubstream); |
| 2124 | if (runtime->status->state != SNDRV_PCM_STATE_DRAINING && |
| 2125 | (runtime->status->state != SNDRV_PCM_STATE_RUNNING || |
| 2126 | snd_pcm_oss_playback_ready(psubstream))) |
| 2127 | mask |= POLLOUT | POLLWRNORM; |
| 2128 | snd_pcm_stream_unlock_irq(psubstream); |
| 2129 | } |
| 2130 | if (csubstream != NULL) { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2131 | struct snd_pcm_runtime *runtime = csubstream->runtime; |
| 2132 | snd_pcm_state_t ostate; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2133 | poll_wait(file, &runtime->sleep, wait); |
| 2134 | snd_pcm_stream_lock_irq(csubstream); |
| 2135 | if ((ostate = runtime->status->state) != SNDRV_PCM_STATE_RUNNING || |
| 2136 | snd_pcm_oss_capture_ready(csubstream)) |
| 2137 | mask |= POLLIN | POLLRDNORM; |
| 2138 | snd_pcm_stream_unlock_irq(csubstream); |
| 2139 | if (ostate != SNDRV_PCM_STATE_RUNNING && runtime->oss.trigger) { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2140 | struct snd_pcm_oss_file ofile; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2141 | memset(&ofile, 0, sizeof(ofile)); |
| 2142 | ofile.streams[SNDRV_PCM_STREAM_CAPTURE] = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE]; |
| 2143 | runtime->oss.trigger = 0; |
| 2144 | snd_pcm_oss_set_trigger(&ofile, PCM_ENABLE_INPUT); |
| 2145 | } |
| 2146 | } |
| 2147 | |
| 2148 | return mask; |
| 2149 | } |
| 2150 | |
| 2151 | static int snd_pcm_oss_mmap(struct file *file, struct vm_area_struct *area) |
| 2152 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2153 | struct snd_pcm_oss_file *pcm_oss_file; |
| 2154 | struct snd_pcm_substream *substream = NULL; |
| 2155 | struct snd_pcm_runtime *runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2156 | int err; |
| 2157 | |
| 2158 | #ifdef OSS_DEBUG |
| 2159 | printk("pcm_oss: mmap begin\n"); |
| 2160 | #endif |
| 2161 | pcm_oss_file = file->private_data; |
| 2162 | switch ((area->vm_flags & (VM_READ | VM_WRITE))) { |
| 2163 | case VM_READ | VM_WRITE: |
| 2164 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK]; |
| 2165 | if (substream) |
| 2166 | break; |
| 2167 | /* Fall through */ |
| 2168 | case VM_READ: |
| 2169 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE]; |
| 2170 | break; |
| 2171 | case VM_WRITE: |
| 2172 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK]; |
| 2173 | break; |
| 2174 | default: |
| 2175 | return -EINVAL; |
| 2176 | } |
| 2177 | /* set VM_READ access as well to fix memset() routines that do |
| 2178 | reads before writes (to improve performance) */ |
| 2179 | area->vm_flags |= VM_READ; |
| 2180 | if (substream == NULL) |
| 2181 | return -ENXIO; |
| 2182 | runtime = substream->runtime; |
| 2183 | if (!(runtime->info & SNDRV_PCM_INFO_MMAP_VALID)) |
| 2184 | return -EIO; |
| 2185 | if (runtime->info & SNDRV_PCM_INFO_INTERLEAVED) |
| 2186 | runtime->access = SNDRV_PCM_ACCESS_MMAP_INTERLEAVED; |
| 2187 | else |
| 2188 | return -EIO; |
| 2189 | |
| 2190 | if (runtime->oss.params) { |
| 2191 | if ((err = snd_pcm_oss_change_params(substream)) < 0) |
| 2192 | return err; |
| 2193 | } |
Jaroslav Kysela | 21a3479 | 2006-01-13 09:12:11 +0100 | [diff] [blame] | 2194 | #ifdef CONFIG_SND_PCM_OSS_PLUGINS |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2195 | if (runtime->oss.plugin_first != NULL) |
| 2196 | return -EIO; |
Jaroslav Kysela | 21a3479 | 2006-01-13 09:12:11 +0100 | [diff] [blame] | 2197 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2198 | |
| 2199 | if (area->vm_pgoff != 0) |
| 2200 | return -EINVAL; |
| 2201 | |
| 2202 | err = snd_pcm_mmap_data(substream, file, area); |
| 2203 | if (err < 0) |
| 2204 | return err; |
| 2205 | runtime->oss.mmap_bytes = area->vm_end - area->vm_start; |
| 2206 | runtime->silence_threshold = 0; |
| 2207 | runtime->silence_size = 0; |
| 2208 | #ifdef OSS_DEBUG |
| 2209 | printk("pcm_oss: mmap ok, bytes = 0x%x\n", runtime->oss.mmap_bytes); |
| 2210 | #endif |
| 2211 | /* In mmap mode we never stop */ |
| 2212 | runtime->stop_threshold = runtime->boundary; |
| 2213 | |
| 2214 | return 0; |
| 2215 | } |
| 2216 | |
Takashi Iwai | b7d90a3 | 2006-04-25 12:56:04 +0200 | [diff] [blame^] | 2217 | #ifdef CONFIG_SND_VERBOSE_PROCFS |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2218 | /* |
| 2219 | * /proc interface |
| 2220 | */ |
| 2221 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2222 | static void snd_pcm_oss_proc_read(struct snd_info_entry *entry, |
| 2223 | struct snd_info_buffer *buffer) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2224 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2225 | struct snd_pcm_str *pstr = entry->private_data; |
| 2226 | struct snd_pcm_oss_setup *setup = pstr->oss.setup_list; |
Ingo Molnar | 1a60d4c | 2006-01-16 16:29:08 +0100 | [diff] [blame] | 2227 | mutex_lock(&pstr->oss.setup_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2228 | while (setup) { |
| 2229 | snd_iprintf(buffer, "%s %u %u%s%s%s%s%s%s\n", |
| 2230 | setup->task_name, |
| 2231 | setup->periods, |
| 2232 | setup->period_size, |
| 2233 | setup->disable ? " disable" : "", |
| 2234 | setup->direct ? " direct" : "", |
| 2235 | setup->block ? " block" : "", |
| 2236 | setup->nonblock ? " non-block" : "", |
| 2237 | setup->partialfrag ? " partial-frag" : "", |
| 2238 | setup->nosilence ? " no-silence" : ""); |
| 2239 | setup = setup->next; |
| 2240 | } |
Ingo Molnar | 1a60d4c | 2006-01-16 16:29:08 +0100 | [diff] [blame] | 2241 | mutex_unlock(&pstr->oss.setup_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2242 | } |
| 2243 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2244 | 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] | 2245 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2246 | struct snd_pcm_oss_setup *setup, *setupn; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2247 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2248 | for (setup = pstr->oss.setup_list, pstr->oss.setup_list = NULL; |
| 2249 | setup; setup = setupn) { |
| 2250 | setupn = setup->next; |
| 2251 | kfree(setup->task_name); |
| 2252 | kfree(setup); |
| 2253 | } |
| 2254 | pstr->oss.setup_list = NULL; |
| 2255 | } |
| 2256 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2257 | static void snd_pcm_oss_proc_write(struct snd_info_entry *entry, |
| 2258 | struct snd_info_buffer *buffer) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2259 | { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2260 | struct snd_pcm_str *pstr = entry->private_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2261 | char line[128], str[32], task_name[32], *ptr; |
| 2262 | int idx1; |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2263 | struct snd_pcm_oss_setup *setup, *setup1, template; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2264 | |
| 2265 | while (!snd_info_get_line(buffer, line, sizeof(line))) { |
Ingo Molnar | 1a60d4c | 2006-01-16 16:29:08 +0100 | [diff] [blame] | 2266 | mutex_lock(&pstr->oss.setup_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2267 | memset(&template, 0, sizeof(template)); |
| 2268 | ptr = snd_info_get_str(task_name, line, sizeof(task_name)); |
| 2269 | if (!strcmp(task_name, "clear") || !strcmp(task_name, "erase")) { |
| 2270 | snd_pcm_oss_proc_free_setup_list(pstr); |
Ingo Molnar | 1a60d4c | 2006-01-16 16:29:08 +0100 | [diff] [blame] | 2271 | mutex_unlock(&pstr->oss.setup_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2272 | continue; |
| 2273 | } |
| 2274 | for (setup = pstr->oss.setup_list; setup; setup = setup->next) { |
| 2275 | if (!strcmp(setup->task_name, task_name)) { |
| 2276 | template = *setup; |
| 2277 | break; |
| 2278 | } |
| 2279 | } |
| 2280 | ptr = snd_info_get_str(str, ptr, sizeof(str)); |
| 2281 | template.periods = simple_strtoul(str, NULL, 10); |
| 2282 | ptr = snd_info_get_str(str, ptr, sizeof(str)); |
| 2283 | template.period_size = simple_strtoul(str, NULL, 10); |
| 2284 | for (idx1 = 31; idx1 >= 0; idx1--) |
| 2285 | if (template.period_size & (1 << idx1)) |
| 2286 | break; |
| 2287 | for (idx1--; idx1 >= 0; idx1--) |
| 2288 | template.period_size &= ~(1 << idx1); |
| 2289 | do { |
| 2290 | ptr = snd_info_get_str(str, ptr, sizeof(str)); |
| 2291 | if (!strcmp(str, "disable")) { |
| 2292 | template.disable = 1; |
| 2293 | } else if (!strcmp(str, "direct")) { |
| 2294 | template.direct = 1; |
| 2295 | } else if (!strcmp(str, "block")) { |
| 2296 | template.block = 1; |
| 2297 | } else if (!strcmp(str, "non-block")) { |
| 2298 | template.nonblock = 1; |
| 2299 | } else if (!strcmp(str, "partial-frag")) { |
| 2300 | template.partialfrag = 1; |
| 2301 | } else if (!strcmp(str, "no-silence")) { |
| 2302 | template.nosilence = 1; |
Takashi Iwai | 10f69f9 | 2005-09-08 13:48:34 +0200 | [diff] [blame] | 2303 | } else if (!strcmp(str, "buggy-ptr")) { |
| 2304 | template.buggyptr = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2305 | } |
| 2306 | } while (*str); |
| 2307 | if (setup == NULL) { |
Takashi Iwai | 060d77b | 2006-03-27 16:44:52 +0200 | [diff] [blame] | 2308 | setup = kmalloc(sizeof(*setup), GFP_KERNEL); |
| 2309 | if (! setup) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2310 | buffer->error = -ENOMEM; |
Takashi Iwai | 060d77b | 2006-03-27 16:44:52 +0200 | [diff] [blame] | 2311 | mutex_lock(&pstr->oss.setup_mutex); |
| 2312 | return; |
| 2313 | } |
| 2314 | if (pstr->oss.setup_list == NULL) |
| 2315 | pstr->oss.setup_list = setup; |
| 2316 | else { |
| 2317 | for (setup1 = pstr->oss.setup_list; |
| 2318 | setup1->next; setup1 = setup1->next); |
| 2319 | setup1->next = setup; |
| 2320 | } |
| 2321 | template.task_name = kstrdup(task_name, GFP_KERNEL); |
| 2322 | if (! template.task_name) { |
| 2323 | kfree(setup); |
| 2324 | buffer->error = -ENOMEM; |
| 2325 | mutex_lock(&pstr->oss.setup_mutex); |
| 2326 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2327 | } |
| 2328 | } |
Takashi Iwai | 060d77b | 2006-03-27 16:44:52 +0200 | [diff] [blame] | 2329 | *setup = template; |
Ingo Molnar | 1a60d4c | 2006-01-16 16:29:08 +0100 | [diff] [blame] | 2330 | mutex_unlock(&pstr->oss.setup_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2331 | } |
| 2332 | } |
| 2333 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2334 | static void snd_pcm_oss_proc_init(struct snd_pcm *pcm) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2335 | { |
| 2336 | int stream; |
| 2337 | for (stream = 0; stream < 2; ++stream) { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2338 | struct snd_info_entry *entry; |
| 2339 | struct snd_pcm_str *pstr = &pcm->streams[stream]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2340 | if (pstr->substream_count == 0) |
| 2341 | continue; |
| 2342 | if ((entry = snd_info_create_card_entry(pcm->card, "oss", pstr->proc_root)) != NULL) { |
| 2343 | entry->content = SNDRV_INFO_CONTENT_TEXT; |
| 2344 | entry->mode = S_IFREG | S_IRUGO | S_IWUSR; |
| 2345 | entry->c.text.read_size = 8192; |
| 2346 | entry->c.text.read = snd_pcm_oss_proc_read; |
| 2347 | entry->c.text.write_size = 8192; |
| 2348 | entry->c.text.write = snd_pcm_oss_proc_write; |
| 2349 | entry->private_data = pstr; |
| 2350 | if (snd_info_register(entry) < 0) { |
| 2351 | snd_info_free_entry(entry); |
| 2352 | entry = NULL; |
| 2353 | } |
| 2354 | } |
| 2355 | pstr->oss.proc_entry = entry; |
| 2356 | } |
| 2357 | } |
| 2358 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2359 | static void snd_pcm_oss_proc_done(struct snd_pcm *pcm) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2360 | { |
| 2361 | int stream; |
| 2362 | for (stream = 0; stream < 2; ++stream) { |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2363 | struct snd_pcm_str *pstr = &pcm->streams[stream]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2364 | if (pstr->oss.proc_entry) { |
| 2365 | snd_info_unregister(pstr->oss.proc_entry); |
| 2366 | pstr->oss.proc_entry = NULL; |
| 2367 | snd_pcm_oss_proc_free_setup_list(pstr); |
| 2368 | } |
| 2369 | } |
| 2370 | } |
Takashi Iwai | b7d90a3 | 2006-04-25 12:56:04 +0200 | [diff] [blame^] | 2371 | #else /* !CONFIG_SND_VERBOSE_PROCFS */ |
Takashi Iwai | 04f141a | 2005-12-01 10:43:51 +0100 | [diff] [blame] | 2372 | #define snd_pcm_oss_proc_init(pcm) |
| 2373 | #define snd_pcm_oss_proc_done(pcm) |
Takashi Iwai | b7d90a3 | 2006-04-25 12:56:04 +0200 | [diff] [blame^] | 2374 | #endif /* CONFIG_SND_VERBOSE_PROCFS */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2375 | |
| 2376 | /* |
| 2377 | * ENTRY functions |
| 2378 | */ |
| 2379 | |
| 2380 | static struct file_operations snd_pcm_oss_f_reg = |
| 2381 | { |
| 2382 | .owner = THIS_MODULE, |
| 2383 | .read = snd_pcm_oss_read, |
| 2384 | .write = snd_pcm_oss_write, |
| 2385 | .open = snd_pcm_oss_open, |
| 2386 | .release = snd_pcm_oss_release, |
| 2387 | .poll = snd_pcm_oss_poll, |
| 2388 | .unlocked_ioctl = snd_pcm_oss_ioctl, |
| 2389 | .compat_ioctl = snd_pcm_oss_ioctl_compat, |
| 2390 | .mmap = snd_pcm_oss_mmap, |
| 2391 | }; |
| 2392 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2393 | static void register_oss_dsp(struct snd_pcm *pcm, int index) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2394 | { |
| 2395 | char name[128]; |
| 2396 | sprintf(name, "dsp%i%i", pcm->card->number, pcm->device); |
| 2397 | if (snd_register_oss_device(SNDRV_OSS_DEVICE_TYPE_PCM, |
Clemens Ladisch | 2af677f | 2005-11-20 14:03:48 +0100 | [diff] [blame] | 2398 | pcm->card, index, &snd_pcm_oss_f_reg, |
Clemens Ladisch | f87135f | 2005-11-20 14:06:59 +0100 | [diff] [blame] | 2399 | pcm, name) < 0) { |
Takashi Iwai | d3d579f | 2005-10-21 16:20:11 +0200 | [diff] [blame] | 2400 | snd_printk(KERN_ERR "unable to register OSS PCM device %i:%i\n", |
| 2401 | pcm->card->number, pcm->device); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2402 | } |
| 2403 | } |
| 2404 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2405 | static int snd_pcm_oss_register_minor(struct snd_pcm *pcm) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2406 | { |
| 2407 | pcm->oss.reg = 0; |
| 2408 | if (dsp_map[pcm->card->number] == (int)pcm->device) { |
| 2409 | char name[128]; |
| 2410 | int duplex; |
| 2411 | register_oss_dsp(pcm, 0); |
| 2412 | duplex = (pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream_count > 0 && |
| 2413 | pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream_count && |
| 2414 | !(pcm->info_flags & SNDRV_PCM_INFO_HALF_DUPLEX)); |
| 2415 | sprintf(name, "%s%s", pcm->name, duplex ? " (DUPLEX)" : ""); |
| 2416 | #ifdef SNDRV_OSS_INFO_DEV_AUDIO |
| 2417 | snd_oss_info_register(SNDRV_OSS_INFO_DEV_AUDIO, |
| 2418 | pcm->card->number, |
| 2419 | name); |
| 2420 | #endif |
| 2421 | pcm->oss.reg++; |
| 2422 | pcm->oss.reg_mask |= 1; |
| 2423 | } |
| 2424 | if (adsp_map[pcm->card->number] == (int)pcm->device) { |
| 2425 | register_oss_dsp(pcm, 1); |
| 2426 | pcm->oss.reg++; |
| 2427 | pcm->oss.reg_mask |= 2; |
| 2428 | } |
| 2429 | |
| 2430 | if (pcm->oss.reg) |
| 2431 | snd_pcm_oss_proc_init(pcm); |
| 2432 | |
| 2433 | return 0; |
| 2434 | } |
| 2435 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2436 | static int snd_pcm_oss_disconnect_minor(struct snd_pcm *pcm) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2437 | { |
| 2438 | if (pcm->oss.reg) { |
| 2439 | if (pcm->oss.reg_mask & 1) { |
| 2440 | pcm->oss.reg_mask &= ~1; |
| 2441 | snd_unregister_oss_device(SNDRV_OSS_DEVICE_TYPE_PCM, |
| 2442 | pcm->card, 0); |
| 2443 | } |
| 2444 | if (pcm->oss.reg_mask & 2) { |
| 2445 | pcm->oss.reg_mask &= ~2; |
| 2446 | snd_unregister_oss_device(SNDRV_OSS_DEVICE_TYPE_PCM, |
| 2447 | pcm->card, 1); |
| 2448 | } |
| 2449 | } |
| 2450 | return 0; |
| 2451 | } |
| 2452 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2453 | static int snd_pcm_oss_unregister_minor(struct snd_pcm *pcm) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2454 | { |
| 2455 | snd_pcm_oss_disconnect_minor(pcm); |
| 2456 | if (pcm->oss.reg) { |
| 2457 | if (dsp_map[pcm->card->number] == (int)pcm->device) { |
| 2458 | #ifdef SNDRV_OSS_INFO_DEV_AUDIO |
| 2459 | snd_oss_info_unregister(SNDRV_OSS_INFO_DEV_AUDIO, pcm->card->number); |
| 2460 | #endif |
| 2461 | } |
| 2462 | pcm->oss.reg = 0; |
| 2463 | snd_pcm_oss_proc_done(pcm); |
| 2464 | } |
| 2465 | return 0; |
| 2466 | } |
| 2467 | |
Takashi Iwai | 6ac77bc | 2005-11-17 14:01:49 +0100 | [diff] [blame] | 2468 | static struct snd_pcm_notify snd_pcm_oss_notify = |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2469 | { |
| 2470 | .n_register = snd_pcm_oss_register_minor, |
| 2471 | .n_disconnect = snd_pcm_oss_disconnect_minor, |
| 2472 | .n_unregister = snd_pcm_oss_unregister_minor, |
| 2473 | }; |
| 2474 | |
| 2475 | static int __init alsa_pcm_oss_init(void) |
| 2476 | { |
| 2477 | int i; |
| 2478 | int err; |
| 2479 | |
| 2480 | /* check device map table */ |
| 2481 | for (i = 0; i < SNDRV_CARDS; i++) { |
| 2482 | if (dsp_map[i] < 0 || dsp_map[i] >= SNDRV_PCM_DEVICES) { |
Takashi Iwai | d3d579f | 2005-10-21 16:20:11 +0200 | [diff] [blame] | 2483 | snd_printk(KERN_ERR "invalid dsp_map[%d] = %d\n", |
| 2484 | i, dsp_map[i]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2485 | dsp_map[i] = 0; |
| 2486 | } |
| 2487 | if (adsp_map[i] < 0 || adsp_map[i] >= SNDRV_PCM_DEVICES) { |
Takashi Iwai | d3d579f | 2005-10-21 16:20:11 +0200 | [diff] [blame] | 2488 | snd_printk(KERN_ERR "invalid adsp_map[%d] = %d\n", |
| 2489 | i, adsp_map[i]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2490 | adsp_map[i] = 1; |
| 2491 | } |
| 2492 | } |
| 2493 | if ((err = snd_pcm_notify(&snd_pcm_oss_notify, 0)) < 0) |
| 2494 | return err; |
| 2495 | return 0; |
| 2496 | } |
| 2497 | |
| 2498 | static void __exit alsa_pcm_oss_exit(void) |
| 2499 | { |
| 2500 | snd_pcm_notify(&snd_pcm_oss_notify, 1); |
| 2501 | } |
| 2502 | |
| 2503 | module_init(alsa_pcm_oss_init) |
| 2504 | module_exit(alsa_pcm_oss_exit) |