1 /* 2 * PCM Interface - local header file 3 * Copyright (c) 2000 by Jaroslav Kysela <perex (at) perex.cz> 4 * Abramo Bagnara <abramo (at) alsa-project.org> 5 * 6 * 7 * This library is free software; you can redistribute it and/or modify 8 * it under the terms of the GNU Lesser General Public License as 9 * published by the Free Software Foundation; either version 2.1 of 10 * the License, or (at your option) any later version. 11 * 12 * This program is distributed in the hope that it will be useful, 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 * GNU Lesser General Public License for more details. 16 * 17 * You should have received a copy of the GNU Lesser General Public 18 * License along with this library; if not, write to the Free Software 19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 20 * 21 */ 22 23 #include <stdio.h> 24 #include <stdlib.h> 25 #include <limits.h> 26 #include <sys/uio.h> 27 28 #define _snd_mask sndrv_mask 29 #define _snd_pcm_access_mask _snd_mask 30 #define _snd_pcm_format_mask _snd_mask 31 #define _snd_pcm_subformat_mask _snd_mask 32 33 #include "local.h" 34 35 #define SND_INTERVAL_INLINE 36 #include "interval.h" 37 38 #define SND_MASK_INLINE 39 #include "mask.h" 40 41 typedef enum sndrv_pcm_hw_param snd_pcm_hw_param_t; 42 #define SND_PCM_HW_PARAM_ACCESS SNDRV_PCM_HW_PARAM_ACCESS 43 #define SND_PCM_HW_PARAM_FIRST_MASK SNDRV_PCM_HW_PARAM_FIRST_MASK 44 #define SND_PCM_HW_PARAM_FORMAT SNDRV_PCM_HW_PARAM_FORMAT 45 #define SND_PCM_HW_PARAM_SUBFORMAT SNDRV_PCM_HW_PARAM_SUBFORMAT 46 #define SND_PCM_HW_PARAM_LAST_MASK SNDRV_PCM_HW_PARAM_LAST_MASK 47 #define SND_PCM_HW_PARAM_SAMPLE_BITS SNDRV_PCM_HW_PARAM_SAMPLE_BITS 48 #define SND_PCM_HW_PARAM_FIRST_INTERVAL SNDRV_PCM_HW_PARAM_FIRST_INTERVAL 49 #define SND_PCM_HW_PARAM_FRAME_BITS SNDRV_PCM_HW_PARAM_FRAME_BITS 50 #define SND_PCM_HW_PARAM_CHANNELS SNDRV_PCM_HW_PARAM_CHANNELS 51 #define SND_PCM_HW_PARAM_RATE SNDRV_PCM_HW_PARAM_RATE 52 #define SND_PCM_HW_PARAM_PERIOD_TIME SNDRV_PCM_HW_PARAM_PERIOD_TIME 53 #define SND_PCM_HW_PARAM_PERIOD_SIZE SNDRV_PCM_HW_PARAM_PERIOD_SIZE 54 #define SND_PCM_HW_PARAM_PERIOD_BYTES SNDRV_PCM_HW_PARAM_PERIOD_BYTES 55 #define SND_PCM_HW_PARAM_PERIODS SNDRV_PCM_HW_PARAM_PERIODS 56 #define SND_PCM_HW_PARAM_BUFFER_TIME SNDRV_PCM_HW_PARAM_BUFFER_TIME 57 #define SND_PCM_HW_PARAM_BUFFER_SIZE SNDRV_PCM_HW_PARAM_BUFFER_SIZE 58 #define SND_PCM_HW_PARAM_BUFFER_BYTES SNDRV_PCM_HW_PARAM_BUFFER_BYTES 59 #define SND_PCM_HW_PARAM_TICK_TIME SNDRV_PCM_HW_PARAM_TICK_TIME 60 #define SND_PCM_HW_PARAM_LAST_INTERVAL SNDRV_PCM_HW_PARAM_LAST_INTERVAL 61 #define SND_PCM_HW_PARAM_LAST_MASK SNDRV_PCM_HW_PARAM_LAST_MASK 62 #define SND_PCM_HW_PARAM_FIRST_MASK SNDRV_PCM_HW_PARAM_FIRST_MASK 63 #define SND_PCM_HW_PARAM_LAST_INTERVAL SNDRV_PCM_HW_PARAM_LAST_INTERVAL 64 #define SND_PCM_HW_PARAM_FIRST_INTERVAL SNDRV_PCM_HW_PARAM_FIRST_INTERVAL 65 66 /** device accepts mmaped access */ 67 #define SND_PCM_INFO_MMAP SNDRV_PCM_INFO_MMAP 68 /** device accepts mmaped access with sample resolution */ 69 #define SND_PCM_INFO_MMAP_VALID SNDRV_PCM_INFO_MMAP_VALID 70 /** device is doing double buffering */ 71 #define SND_PCM_INFO_DOUBLE SNDRV_PCM_INFO_DOUBLE 72 /** device transfers samples in batch */ 73 #define SND_PCM_INFO_BATCH SNDRV_PCM_INFO_BATCH 74 /** device accepts interleaved samples */ 75 #define SND_PCM_INFO_INTERLEAVED SNDRV_PCM_INFO_INTERLEAVED 76 /** device accepts non-interleaved samples */ 77 #define SND_PCM_INFO_NONINTERLEAVED SNDRV_PCM_INFO_NONINTERLEAVED 78 /** device accepts complex sample organization */ 79 #define SND_PCM_INFO_COMPLEX SNDRV_PCM_INFO_COMPLEX 80 /** device is capable block transfers */ 81 #define SND_PCM_INFO_BLOCK_TRANSFER SNDRV_PCM_INFO_BLOCK_TRANSFER 82 /** device can detect DAC/ADC overrange */ 83 #define SND_PCM_INFO_OVERRANGE SNDRV_PCM_INFO_OVERRANGE 84 /** device supports resume */ 85 #define SND_PCM_INFO_RESUME SNDRV_PCM_INFO_RESUME 86 /** device is capable to pause */ 87 #define SND_PCM_INFO_PAUSE SNDRV_PCM_INFO_PAUSE 88 /** device can do only half duplex */ 89 #define SND_PCM_INFO_HALF_DUPLEX SNDRV_PCM_INFO_HALF_DUPLEX 90 /** device can do only joint duplex (same parameters) */ 91 #define SND_PCM_INFO_JOINT_DUPLEX SNDRV_PCM_INFO_JOINT_DUPLEX 92 /** device can do a kind of synchronized start */ 93 #define SND_PCM_INFO_SYNC_START SNDRV_PCM_INFO_SYNC_START 94 95 #define SND_PCM_HW_PARAMS_NORESAMPLE SNDRV_PCM_HW_PARAMS_NORESAMPLE 96 #define SND_PCM_HW_PARAMS_EXPORT_BUFFER SNDRV_PCM_HW_PARAMS_EXPORT_BUFFER 97 98 #define SND_PCM_INFO_MONOTONIC 0x80000000 99 100 typedef struct _snd_pcm_rbptr { 101 snd_pcm_t *master; 102 volatile snd_pcm_uframes_t *ptr; 103 int fd; 104 off_t offset; 105 int link_dst_count; 106 snd_pcm_t **link_dst; 107 void *private_data; 108 void (*changed)(snd_pcm_t *pcm, snd_pcm_t *src); 109 } snd_pcm_rbptr_t; 110 111 typedef struct _snd_pcm_channel_info { 112 unsigned int channel; 113 void *addr; /* base address of channel samples */ 114 unsigned int first; /* offset to first sample in bits */ 115 unsigned int step; /* samples distance in bits */ 116 enum { SND_PCM_AREA_SHM, SND_PCM_AREA_MMAP, SND_PCM_AREA_LOCAL } type; 117 union { 118 struct { 119 struct snd_shm_area *area; 120 int shmid; 121 } shm; 122 struct { 123 int fd; 124 off_t offset; 125 } mmap; 126 } u; 127 char reserved[64]; 128 } snd_pcm_channel_info_t; 129 130 typedef struct { 131 int (*close)(snd_pcm_t *pcm); 132 int (*nonblock)(snd_pcm_t *pcm, int nonblock); 133 int (*async)(snd_pcm_t *pcm, int sig, pid_t pid); 134 int (*info)(snd_pcm_t *pcm, snd_pcm_info_t *info); 135 int (*hw_refine)(snd_pcm_t *pcm, snd_pcm_hw_params_t *params); 136 int (*hw_params)(snd_pcm_t *pcm, snd_pcm_hw_params_t *params); 137 int (*hw_free)(snd_pcm_t *pcm); 138 int (*sw_params)(snd_pcm_t *pcm, snd_pcm_sw_params_t *params); 139 int (*channel_info)(snd_pcm_t *pcm, snd_pcm_channel_info_t *info); 140 void (*dump)(snd_pcm_t *pcm, snd_output_t *out); 141 int (*mmap)(snd_pcm_t *pcm); 142 int (*munmap)(snd_pcm_t *pcm); 143 } snd_pcm_ops_t; 144 145 typedef struct { 146 int (*status)(snd_pcm_t *pcm, snd_pcm_status_t *status); 147 int (*prepare)(snd_pcm_t *pcm); 148 int (*reset)(snd_pcm_t *pcm); 149 int (*start)(snd_pcm_t *pcm); 150 int (*drop)(snd_pcm_t *pcm); 151 int (*drain)(snd_pcm_t *pcm); 152 int (*pause)(snd_pcm_t *pcm, int enable); 153 snd_pcm_state_t (*state)(snd_pcm_t *pcm); 154 int (*hwsync)(snd_pcm_t *pcm); 155 int (*delay)(snd_pcm_t *pcm, snd_pcm_sframes_t *delayp); 156 int (*resume)(snd_pcm_t *pcm); 157 int (*link)(snd_pcm_t *pcm1, snd_pcm_t *pcm2); 158 int (*link_slaves)(snd_pcm_t *pcm, snd_pcm_t *master); 159 int (*unlink)(snd_pcm_t *pcm); 160 snd_pcm_sframes_t (*rewindable)(snd_pcm_t *pcm); 161 snd_pcm_sframes_t (*rewind)(snd_pcm_t *pcm, snd_pcm_uframes_t frames); 162 snd_pcm_sframes_t (*forwardable)(snd_pcm_t *pcm); 163 snd_pcm_sframes_t (*forward)(snd_pcm_t *pcm, snd_pcm_uframes_t frames); 164 snd_pcm_sframes_t (*writei)(snd_pcm_t *pcm, const void *buffer, snd_pcm_uframes_t size); 165 snd_pcm_sframes_t (*writen)(snd_pcm_t *pcm, void **bufs, snd_pcm_uframes_t size); 166 snd_pcm_sframes_t (*readi)(snd_pcm_t *pcm, void *buffer, snd_pcm_uframes_t size); 167 snd_pcm_sframes_t (*readn)(snd_pcm_t *pcm, void **bufs, snd_pcm_uframes_t size); 168 snd_pcm_sframes_t (*avail_update)(snd_pcm_t *pcm); 169 snd_pcm_sframes_t (*mmap_commit)(snd_pcm_t *pcm, snd_pcm_uframes_t offset, snd_pcm_uframes_t size); 170 int (*htimestamp)(snd_pcm_t *pcm, snd_pcm_uframes_t *avail, snd_htimestamp_t *tstamp); 171 int (*poll_descriptors_count)(snd_pcm_t *pcm); 172 int (*poll_descriptors)(snd_pcm_t *pcm, struct pollfd *pfds, unsigned int space); 173 int (*poll_revents)(snd_pcm_t *pcm, struct pollfd *pfds, unsigned int nfds, unsigned short *revents); 174 } snd_pcm_fast_ops_t; 175 176 struct _snd_pcm { 177 void *dl_handle; 178 char *name; 179 snd_pcm_type_t type; 180 snd_pcm_stream_t stream; 181 int mode; 182 int poll_fd_count; 183 int poll_fd; 184 unsigned short poll_events; 185 int setup: 1, 186 monotonic: 1; 187 snd_pcm_access_t access; /* access mode */ 188 snd_pcm_format_t format; /* SND_PCM_FORMAT_* */ 189 snd_pcm_subformat_t subformat; /* subformat */ 190 unsigned int channels; /* channels */ 191 unsigned int rate; /* rate in Hz */ 192 snd_pcm_uframes_t period_size; 193 unsigned int period_time; /* period duration */ 194 snd_interval_t periods; 195 snd_pcm_tstamp_t tstamp_mode; /* timestamp mode */ 196 unsigned int period_step; 197 snd_pcm_uframes_t avail_min; /* min avail frames for wakeup */ 198 int period_event; 199 snd_pcm_uframes_t start_threshold; 200 snd_pcm_uframes_t stop_threshold; 201 snd_pcm_uframes_t silence_threshold; /* Silence filling happens when 202 noise is nearest than this */ 203 snd_pcm_uframes_t silence_size; /* Silence filling size */ 204 snd_pcm_uframes_t boundary; /* pointers wrap point */ 205 unsigned int info; /* Info for returned setup */ 206 unsigned int msbits; /* used most significant bits */ 207 unsigned int rate_num; /* rate numerator */ 208 unsigned int rate_den; /* rate denominator */ 209 unsigned int hw_flags; /* actual hardware flags */ 210 snd_pcm_uframes_t fifo_size; /* chip FIFO size in frames */ 211 snd_pcm_uframes_t buffer_size; 212 snd_interval_t buffer_time; 213 unsigned int sample_bits; 214 unsigned int frame_bits; 215 snd_pcm_rbptr_t appl; 216 snd_pcm_rbptr_t hw; 217 snd_pcm_uframes_t min_align; 218 unsigned int mmap_rw: 1; /* use always mmapped buffer */ 219 unsigned int mmap_shadow: 1; /* don't call actual mmap, 220 * use the mmaped buffer of the slave 221 */ 222 unsigned int donot_close: 1; /* don't close this PCM */ 223 snd_pcm_channel_info_t *mmap_channels; 224 snd_pcm_channel_area_t *running_areas; 225 snd_pcm_channel_area_t *stopped_areas; 226 const snd_pcm_ops_t *ops; 227 const snd_pcm_fast_ops_t *fast_ops; 228 snd_pcm_t *op_arg; 229 snd_pcm_t *fast_op_arg; 230 void *private_data; 231 struct list_head async_handlers; 232 }; 233 234 /* make local functions really local */ 235 /* Grrr, these cannot be local - a bad aserver uses them! 236 #define snd_pcm_async \ 237 snd1_pcm_async 238 #define snd_pcm_mmap \ 239 snd1_pcm_mmap 240 #define snd_pcm_munmap \ 241 snd1_pcm_munmap 242 #define snd_pcm_hw_refine \ 243 snd1_pcm_hw_refine 244 */ 245 #define snd_pcm_new \ 246 snd1_pcm_new 247 #define snd_pcm_free \ 248 snd1_pcm_free 249 #define snd_pcm_areas_from_buf \ 250 snd1_pcm_areas_from_buf 251 #define snd_pcm_areas_from_bufs \ 252 snd1_pcm_areas_from_bufs 253 #define snd_pcm_open_named_slave \ 254 snd1_pcm_open_named_slave 255 #define snd_pcm_conf_generic_id \ 256 snd1_pcm_conf_generic_id 257 #define snd_pcm_hw_open_fd \ 258 snd1_pcm_hw_open_fd 259 #define snd_pcm_wait_nocheck \ 260 snd1_pcm_wait_nocheck 261 #define snd_pcm_rate_get_default_converter \ 262 snd1_pcm_rate_get_default_converter 263 #define snd_pcm_set_hw_ptr \ 264 snd1_pcm_set_hw_ptr 265 #define snd_pcm_set_appl_ptr \ 266 snd1_pcm_set_appl_ptr 267 #define snd_pcm_link_hw_ptr \ 268 snd1_pcm_link_hw_ptr 269 #define snd_pcm_link_appl_ptr \ 270 snd1_pcm_link_appl_ptr 271 #define snd_pcm_unlink_hw_ptr \ 272 snd1_pcm_unlink_hw_ptr 273 #define snd_pcm_unlink_appl_ptr \ 274 snd1_pcm_unlink_appl_ptr 275 #define snd_pcm_mmap_appl_ptr \ 276 snd1_pcm_mmap_appl_ptr 277 #define snd_pcm_mmap_appl_backward \ 278 snd1_pcm_mmap_appl_backward 279 #define snd_pcm_mmap_appl_forward \ 280 snd1_pcm_mmap_appl_forward 281 #define snd_pcm_mmap_hw_backward \ 282 snd1_pcm_mmap_hw_backward 283 #define snd_pcm_mmap_hw_forward \ 284 snd1_pcm_mmap_hw_forward 285 #define snd_pcm_read_areas \ 286 snd1_pcm_read_areas 287 #define snd_pcm_write_areas \ 288 snd1_pcm_write_areas 289 #define snd_pcm_read_mmap \ 290 snd1_pcm_read_mmap 291 #define snd_pcm_write_mmap \ 292 snd1_pcm_write_mmap 293 #define snd_pcm_channel_info_shm \ 294 snd1_pcm_channel_info_shm 295 #define snd_pcm_hw_refine_soft \ 296 snd1_pcm_hw_refine_soft 297 #define snd_pcm_hw_refine_slave \ 298 snd1_pcm_hw_refine_slave 299 #define snd_pcm_hw_params_slave \ 300 snd1_pcm_hw_params_slave 301 #define snd_pcm_hw_param_refine_near \ 302 snd1_pcm_hw_param_refine_near 303 #define snd_pcm_hw_param_refine_multiple \ 304 snd1_pcm_hw_param_refine_multiple 305 #define snd_pcm_hw_param_empty \ 306 snd1_pcm_hw_param_empty 307 #define snd_pcm_hw_param_always_eq \ 308 snd1_pcm_hw_param_always_eq 309 #define snd_pcm_hw_param_never_eq \ 310 snd1_pcm_hw_param_never_eq 311 #define snd_pcm_hw_param_get_mask \ 312 snd1_pcm_hw_param_get_mask 313 #define snd_pcm_hw_param_get_interval \ 314 snd1_pcm_hw_param_get_interval 315 #define snd_pcm_hw_param_any \ 316 snd1_pcm_hw_param_any 317 #define snd_pcm_hw_param_set_integer \ 318 snd1_pcm_hw_param_set_integer 319 #define snd_pcm_hw_param_set_first \ 320 snd1_pcm_hw_param_set_first 321 #define snd_pcm_hw_param_set_last \ 322 snd1_pcm_hw_param_set_last 323 #define snd_pcm_hw_param_set_near \ 324 snd1_pcm_hw_param_set_near 325 #define snd_pcm_hw_param_set_min \ 326 snd1_pcm_hw_param_set_min 327 #define snd_pcm_hw_param_set_max \ 328 snd1_pcm_hw_param_set_max 329 #define snd_pcm_hw_param_set_minmax \ 330 snd1_pcm_hw_param_set_minmax 331 #define snd_pcm_hw_param_set \ 332 snd1_pcm_hw_param_set 333 #define snd_pcm_hw_param_set_mask \ 334 snd1_pcm_hw_param_set_mask 335 #define snd_pcm_hw_param_get \ 336 snd1_pcm_hw_param_get 337 #define snd_pcm_hw_param_get_min \ 338 snd1_pcm_hw_param_get_min 339 #define snd_pcm_hw_param_get_max \ 340 snd1_pcm_hw_param_get_max 341 #define snd_pcm_hw_param_name \ 342 snd1_pcm_hw_param_name 343 344 int snd_pcm_new(snd_pcm_t **pcmp, snd_pcm_type_t type, const char *name, 345 snd_pcm_stream_t stream, int mode); 346 int snd_pcm_free(snd_pcm_t *pcm); 347 348 void snd_pcm_areas_from_buf(snd_pcm_t *pcm, snd_pcm_channel_area_t *areas, void *buf); 349 void snd_pcm_areas_from_bufs(snd_pcm_t *pcm, snd_pcm_channel_area_t *areas, void **bufs); 350 351 int snd_pcm_async(snd_pcm_t *pcm, int sig, pid_t pid); 352 int snd_pcm_mmap(snd_pcm_t *pcm); 353 int snd_pcm_munmap(snd_pcm_t *pcm); 354 int snd_pcm_mmap_ready(snd_pcm_t *pcm); 355 void snd_pcm_set_hw_ptr(snd_pcm_t *pcm, volatile snd_pcm_uframes_t *hw_ptr, int fd, off_t offset); 356 void snd_pcm_set_appl_ptr(snd_pcm_t *pcm, volatile snd_pcm_uframes_t *appl_ptr, int fd, off_t offset); 357 void snd_pcm_link_hw_ptr(snd_pcm_t *pcm, snd_pcm_t *slave); 358 void snd_pcm_link_appl_ptr(snd_pcm_t *pcm, snd_pcm_t *slave); 359 void snd_pcm_unlink_hw_ptr(snd_pcm_t *pcm, snd_pcm_t *slave); 360 void snd_pcm_unlink_appl_ptr(snd_pcm_t *pcm, snd_pcm_t *slave); 361 snd_pcm_sframes_t snd_pcm_mmap_appl_ptr(snd_pcm_t *pcm, off_t offset); 362 void snd_pcm_mmap_appl_backward(snd_pcm_t *pcm, snd_pcm_uframes_t frames); 363 void snd_pcm_mmap_appl_forward(snd_pcm_t *pcm, snd_pcm_uframes_t frames); 364 void snd_pcm_mmap_hw_backward(snd_pcm_t *pcm, snd_pcm_uframes_t frames); 365 void snd_pcm_mmap_hw_forward(snd_pcm_t *pcm, snd_pcm_uframes_t frames); 366 367 snd_pcm_sframes_t snd_pcm_mmap_writei(snd_pcm_t *pcm, const void *buffer, snd_pcm_uframes_t size); 368 snd_pcm_sframes_t snd_pcm_mmap_readi(snd_pcm_t *pcm, void *buffer, snd_pcm_uframes_t size); 369 snd_pcm_sframes_t snd_pcm_mmap_writen(snd_pcm_t *pcm, void **bufs, snd_pcm_uframes_t size); 370 snd_pcm_sframes_t snd_pcm_mmap_readn(snd_pcm_t *pcm, void **bufs, snd_pcm_uframes_t size); 371 372 typedef snd_pcm_sframes_t (*snd_pcm_xfer_areas_func_t)(snd_pcm_t *pcm, 373 const snd_pcm_channel_area_t *areas, 374 snd_pcm_uframes_t offset, 375 snd_pcm_uframes_t size); 376 377 snd_pcm_sframes_t snd_pcm_read_areas(snd_pcm_t *pcm, const snd_pcm_channel_area_t *areas, 378 snd_pcm_uframes_t offset, snd_pcm_uframes_t size, 379 snd_pcm_xfer_areas_func_t func); 380 snd_pcm_sframes_t snd_pcm_write_areas(snd_pcm_t *pcm, const snd_pcm_channel_area_t *areas, 381 snd_pcm_uframes_t offset, snd_pcm_uframes_t size, 382 snd_pcm_xfer_areas_func_t func); 383 snd_pcm_sframes_t snd_pcm_read_mmap(snd_pcm_t *pcm, snd_pcm_uframes_t offset, 384 snd_pcm_uframes_t size); 385 snd_pcm_sframes_t snd_pcm_write_mmap(snd_pcm_t *pcm, snd_pcm_uframes_t offset, 386 snd_pcm_uframes_t size); 387 static inline int snd_pcm_channel_info(snd_pcm_t *pcm, snd_pcm_channel_info_t *info) 388 { 389 return pcm->ops->channel_info(pcm, info); 390 } 391 int snd_pcm_channel_info_shm(snd_pcm_t *pcm, snd_pcm_channel_info_t *info, int shmid); 392 int _snd_pcm_poll_descriptor(snd_pcm_t *pcm); 393 #define _snd_pcm_link_descriptor _snd_pcm_poll_descriptor /* FIXME */ 394 #define _snd_pcm_async_descriptor _snd_pcm_poll_descriptor /* FIXME */ 395 396 /* handle special error cases */ 397 static inline int snd_pcm_check_error(snd_pcm_t *pcm, int err) 398 { 399 if (err == -EINTR) { 400 switch (snd_pcm_state(pcm)) { 401 case SND_PCM_STATE_XRUN: 402 return -EPIPE; 403 case SND_PCM_STATE_SUSPENDED: 404 return -ESTRPIPE; 405 case SND_PCM_STATE_DISCONNECTED: 406 return -ENODEV; 407 default: 408 break; 409 } 410 } 411 return err; 412 } 413 414 static inline snd_pcm_uframes_t snd_pcm_mmap_playback_avail(snd_pcm_t *pcm) 415 { 416 snd_pcm_sframes_t avail; 417 avail = *pcm->hw.ptr + pcm->buffer_size - *pcm->appl.ptr; 418 if (avail < 0) 419 avail += pcm->boundary; 420 else if ((snd_pcm_uframes_t) avail >= pcm->boundary) 421 avail -= pcm->boundary; 422 return avail; 423 } 424 425 static inline snd_pcm_uframes_t snd_pcm_mmap_capture_avail(snd_pcm_t *pcm) 426 { 427 snd_pcm_sframes_t avail; 428 avail = *pcm->hw.ptr - *pcm->appl.ptr; 429 if (avail < 0) 430 avail += pcm->boundary; 431 return avail; 432 } 433 434 static inline snd_pcm_uframes_t snd_pcm_mmap_avail(snd_pcm_t *pcm) 435 { 436 if (pcm->stream == SND_PCM_STREAM_PLAYBACK) 437 return snd_pcm_mmap_playback_avail(pcm); 438 else 439 return snd_pcm_mmap_capture_avail(pcm); 440 } 441 442 static inline snd_pcm_sframes_t snd_pcm_mmap_playback_hw_avail(snd_pcm_t *pcm) 443 { 444 return pcm->buffer_size - snd_pcm_mmap_playback_avail(pcm); 445 } 446 447 static inline snd_pcm_sframes_t snd_pcm_mmap_capture_hw_avail(snd_pcm_t *pcm) 448 { 449 return pcm->buffer_size - snd_pcm_mmap_capture_avail(pcm); 450 } 451 452 static inline snd_pcm_sframes_t snd_pcm_mmap_hw_avail(snd_pcm_t *pcm) 453 { 454 snd_pcm_sframes_t avail; 455 avail = *pcm->hw.ptr - *pcm->appl.ptr; 456 if (pcm->stream == SND_PCM_STREAM_PLAYBACK) 457 avail += pcm->buffer_size; 458 if (avail < 0) 459 avail += pcm->boundary; 460 return pcm->buffer_size - avail; 461 } 462 463 static inline const snd_pcm_channel_area_t *snd_pcm_mmap_areas(snd_pcm_t *pcm) 464 { 465 if (pcm->stopped_areas && 466 snd_pcm_state(pcm) != SND_PCM_STATE_RUNNING) 467 return pcm->stopped_areas; 468 return pcm->running_areas; 469 } 470 471 static inline snd_pcm_uframes_t snd_pcm_mmap_offset(snd_pcm_t *pcm) 472 { 473 assert(pcm); 474 return *pcm->appl.ptr % pcm->buffer_size; 475 } 476 477 static inline snd_pcm_uframes_t snd_pcm_mmap_hw_offset(snd_pcm_t *pcm) 478 { 479 assert(pcm); 480 return *pcm->hw.ptr % pcm->buffer_size; 481 } 482 483 static inline snd_pcm_uframes_t snd_pcm_mmap_playback_delay(snd_pcm_t *pcm) 484 { 485 return snd_pcm_mmap_playback_hw_avail(pcm); 486 } 487 488 static inline snd_pcm_uframes_t snd_pcm_mmap_capture_delay(snd_pcm_t *pcm) 489 { 490 return snd_pcm_mmap_capture_hw_avail(pcm); 491 } 492 493 static inline snd_pcm_sframes_t snd_pcm_mmap_delay(snd_pcm_t *pcm) 494 { 495 if (pcm->stream == SND_PCM_STREAM_PLAYBACK) 496 return snd_pcm_mmap_playback_delay(pcm); 497 else 498 return snd_pcm_mmap_capture_delay(pcm); 499 } 500 501 static inline void *snd_pcm_channel_area_addr(const snd_pcm_channel_area_t *area, snd_pcm_uframes_t offset) 502 { 503 unsigned int bitofs = area->first + area->step * offset; 504 assert(bitofs % 8 == 0); 505 return (char *) area->addr + bitofs / 8; 506 } 507 508 static inline unsigned int snd_pcm_channel_area_step(const snd_pcm_channel_area_t *area) 509 { 510 assert(area->step % 8 == 0); 511 return area->step / 8; 512 } 513 514 static inline snd_pcm_sframes_t _snd_pcm_writei(snd_pcm_t *pcm, const void *buffer, snd_pcm_uframes_t size) 515 { 516 return pcm->fast_ops->writei(pcm->fast_op_arg, buffer, size); 517 } 518 519 static inline snd_pcm_sframes_t _snd_pcm_writen(snd_pcm_t *pcm, void **bufs, snd_pcm_uframes_t size) 520 { 521 return pcm->fast_ops->writen(pcm->fast_op_arg, bufs, size); 522 } 523 524 static inline snd_pcm_sframes_t _snd_pcm_readi(snd_pcm_t *pcm, void *buffer, snd_pcm_uframes_t size) 525 { 526 return pcm->fast_ops->readi(pcm->fast_op_arg, buffer, size); 527 } 528 529 static inline snd_pcm_sframes_t _snd_pcm_readn(snd_pcm_t *pcm, void **bufs, snd_pcm_uframes_t size) 530 { 531 return pcm->fast_ops->readn(pcm->fast_op_arg, bufs, size); 532 } 533 534 static inline int muldiv(int a, int b, int c, int *r) 535 { 536 int64_t n = (int64_t)a * b; 537 int64_t v = n / c; 538 if (v > INT_MAX) { 539 *r = 0; 540 return INT_MAX; 541 } 542 if (v < INT_MIN) { 543 *r = 0; 544 return INT_MIN; 545 } 546 *r = n % c; 547 return v; 548 } 549 550 static inline int muldiv_down(int a, int b, int c) 551 { 552 int64_t v = (int64_t)a * b / c; 553 if (v > INT_MAX) { 554 return INT_MAX; 555 } 556 if (v < INT_MIN) { 557 return INT_MIN; 558 } 559 return v; 560 } 561 562 static inline int muldiv_near(int a, int b, int c) 563 { 564 int r; 565 int n = muldiv(a, b, c, &r); 566 if (r >= (c + 1) / 2) 567 n++; 568 return n; 569 } 570 571 int snd_pcm_hw_refine(snd_pcm_t *pcm, snd_pcm_hw_params_t *params); 572 int _snd_pcm_hw_params(snd_pcm_t *pcm, snd_pcm_hw_params_t *params); 573 int snd_pcm_hw_refine_soft(snd_pcm_t *pcm, snd_pcm_hw_params_t *params); 574 int snd_pcm_hw_refine_slave(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, 575 int (*cprepare)(snd_pcm_t *pcm, 576 snd_pcm_hw_params_t *params), 577 int (*cchange)(snd_pcm_t *pcm, 578 snd_pcm_hw_params_t *params, 579 snd_pcm_hw_params_t *sparams), 580 int (*sprepare)(snd_pcm_t *pcm, 581 snd_pcm_hw_params_t *params), 582 int (*schange)(snd_pcm_t *pcm, 583 snd_pcm_hw_params_t *params, 584 snd_pcm_hw_params_t *sparams), 585 int (*srefine)(snd_pcm_t *pcm, 586 snd_pcm_hw_params_t *sparams)); 587 int snd_pcm_hw_params_slave(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, 588 int (*cchange)(snd_pcm_t *pcm, 589 snd_pcm_hw_params_t *params, 590 snd_pcm_hw_params_t *sparams), 591 int (*sprepare)(snd_pcm_t *pcm, 592 snd_pcm_hw_params_t *params), 593 int (*schange)(snd_pcm_t *pcm, 594 snd_pcm_hw_params_t *params, 595 snd_pcm_hw_params_t *sparams), 596 int (*sparams)(snd_pcm_t *pcm, 597 snd_pcm_hw_params_t *sparams)); 598 599 600 void _snd_pcm_hw_params_any(snd_pcm_hw_params_t *params); 601 void _snd_pcm_hw_param_set_empty(snd_pcm_hw_params_t *params, 602 snd_pcm_hw_param_t var); 603 int _snd_pcm_hw_param_set_interval(snd_pcm_hw_params_t *params, 604 snd_pcm_hw_param_t var, 605 const snd_interval_t *val); 606 int _snd_pcm_hw_param_set_mask(snd_pcm_hw_params_t *params, 607 snd_pcm_hw_param_t var, const snd_mask_t *mask); 608 int _snd_pcm_hw_param_first(snd_pcm_hw_params_t *params, 609 snd_pcm_hw_param_t var); 610 int _snd_pcm_hw_param_last(snd_pcm_hw_params_t *params, 611 snd_pcm_hw_param_t var); 612 int _snd_pcm_hw_param_set(snd_pcm_hw_params_t *params, 613 snd_pcm_hw_param_t var, unsigned int val, int dir); 614 static inline int _snd_pcm_hw_params_set_format(snd_pcm_hw_params_t *params, 615 snd_pcm_format_t val) 616 { 617 return _snd_pcm_hw_param_set(params, SND_PCM_HW_PARAM_FORMAT, 618 (unsigned long) val, 0); 619 } 620 621 static inline int _snd_pcm_hw_params_set_subformat(snd_pcm_hw_params_t *params, 622 snd_pcm_subformat_t val) 623 { 624 return _snd_pcm_hw_param_set(params, SND_PCM_HW_PARAM_SUBFORMAT, 625 (unsigned long) val, 0); 626 } 627 628 int _snd_pcm_hw_param_set_min(snd_pcm_hw_params_t *params, 629 snd_pcm_hw_param_t var, unsigned int val, int dir); 630 int _snd_pcm_hw_param_set_max(snd_pcm_hw_params_t *params, 631 snd_pcm_hw_param_t var, unsigned int val, int dir); 632 int _snd_pcm_hw_param_set_minmax(snd_pcm_hw_params_t *params, 633 snd_pcm_hw_param_t var, 634 unsigned int min, int mindir, 635 unsigned int max, int maxdir); 636 int _snd_pcm_hw_param_refine(snd_pcm_hw_params_t *params, 637 snd_pcm_hw_param_t var, 638 const snd_pcm_hw_params_t *src); 639 int _snd_pcm_hw_params_refine(snd_pcm_hw_params_t *params, 640 unsigned int vars, 641 const snd_pcm_hw_params_t *src); 642 int snd_pcm_hw_param_refine_near(snd_pcm_t *pcm, 643 snd_pcm_hw_params_t *params, 644 snd_pcm_hw_param_t var, 645 const snd_pcm_hw_params_t *src); 646 int snd_pcm_hw_param_refine_multiple(snd_pcm_t *pcm, 647 snd_pcm_hw_params_t *params, 648 snd_pcm_hw_param_t var, 649 const snd_pcm_hw_params_t *src); 650 int snd_pcm_hw_param_empty(const snd_pcm_hw_params_t *params, 651 snd_pcm_hw_param_t var); 652 int snd_pcm_hw_param_always_eq(const snd_pcm_hw_params_t *params, 653 snd_pcm_hw_param_t var, 654 const snd_pcm_hw_params_t *params1); 655 int snd_pcm_hw_param_never_eq(const snd_pcm_hw_params_t *params, 656 snd_pcm_hw_param_t var, 657 const snd_pcm_hw_params_t *params1); 658 const snd_mask_t *snd_pcm_hw_param_get_mask(const snd_pcm_hw_params_t *params, 659 snd_pcm_hw_param_t var); 660 const snd_interval_t *snd_pcm_hw_param_get_interval(const snd_pcm_hw_params_t *params, 661 snd_pcm_hw_param_t var); 662 663 int snd_pcm_hw_param_any(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, 664 snd_pcm_hw_param_t var); 665 int snd_pcm_hw_param_set_integer(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, 666 snd_set_mode_t mode, 667 snd_pcm_hw_param_t var); 668 int snd_pcm_hw_param_set_first(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, 669 snd_pcm_hw_param_t var, unsigned int *rval, int *dir); 670 int snd_pcm_hw_param_set_last(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, 671 snd_pcm_hw_param_t var, unsigned int *rval, int *dir); 672 int snd_pcm_hw_param_set_near(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, 673 snd_pcm_hw_param_t var, unsigned int *val, int *dir); 674 int snd_pcm_hw_param_set_min(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, 675 snd_set_mode_t mode, 676 snd_pcm_hw_param_t var, 677 unsigned int *val, int *dir); 678 int snd_pcm_hw_param_set_max(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, 679 snd_set_mode_t mode, 680 snd_pcm_hw_param_t var, unsigned int *val, int *dir); 681 int snd_pcm_hw_param_set_minmax(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, 682 snd_set_mode_t mode, 683 snd_pcm_hw_param_t var, 684 unsigned int *min, int *mindir, 685 unsigned int *max, int *maxdir); 686 int snd_pcm_hw_param_set(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, 687 snd_set_mode_t mode, 688 snd_pcm_hw_param_t var, unsigned int val, int dir); 689 int snd_pcm_hw_param_set_mask(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, 690 snd_set_mode_t mode, 691 snd_pcm_hw_param_t var, const snd_mask_t *mask); 692 int snd_pcm_hw_param_get(const snd_pcm_hw_params_t *params, snd_pcm_hw_param_t var, 693 unsigned int *val, int *dir); 694 int snd_pcm_hw_param_get_min(const snd_pcm_hw_params_t *params, 695 snd_pcm_hw_param_t var, 696 unsigned int *val, int *dir); 697 int snd_pcm_hw_param_get_max(const snd_pcm_hw_params_t *params, 698 snd_pcm_hw_param_t var, 699 unsigned int *val, int *dir); 700 701 #ifdef INTERNAL 702 snd_pcm_sframes_t INTERNAL(snd_pcm_forward)(snd_pcm_t *pcm, snd_pcm_uframes_t frames); 703 704 int INTERNAL(snd_pcm_hw_params_get_access)(const snd_pcm_hw_params_t *params, snd_pcm_access_t *access); 705 int snd_pcm_hw_params_test_access(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_access_t access); 706 int snd_pcm_hw_params_set_access(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_access_t access); 707 int INTERNAL(snd_pcm_hw_params_set_access_first)(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_access_t *access); 708 int INTERNAL(snd_pcm_hw_params_set_access_last)(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_access_t *access); 709 int snd_pcm_hw_params_set_access_mask(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_access_mask_t *mask); 710 int snd_pcm_hw_params_get_access_mask(snd_pcm_hw_params_t *params, snd_pcm_access_mask_t *mask); 711 712 int INTERNAL(snd_pcm_hw_params_get_format)(const snd_pcm_hw_params_t *params, snd_pcm_format_t *val); 713 int snd_pcm_hw_params_test_format(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_format_t val); 714 int snd_pcm_hw_params_set_format(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_format_t val); 715 int INTERNAL(snd_pcm_hw_params_set_format_first)(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_format_t *format); 716 int INTERNAL(snd_pcm_hw_params_set_format_last)(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_format_t *format); 717 int snd_pcm_hw_params_set_format_mask(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_format_mask_t *mask); 718 void snd_pcm_hw_params_get_format_mask(snd_pcm_hw_params_t *params, snd_pcm_format_mask_t *mask); 719 720 int INTERNAL(snd_pcm_hw_params_get_subformat)(const snd_pcm_hw_params_t *params, snd_pcm_subformat_t *subformat); 721 int snd_pcm_hw_params_test_subformat(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_subformat_t subformat); 722 int snd_pcm_hw_params_set_subformat(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_subformat_t subformat); 723 int INTERNAL(snd_pcm_hw_params_set_subformat_first)(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_subformat_t *subformat); 724 int INTERNAL(snd_pcm_hw_params_set_subformat_last)(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_subformat_t *subformat); 725 int snd_pcm_hw_params_set_subformat_mask(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_subformat_mask_t *mask); 726 void snd_pcm_hw_params_get_subformat_mask(snd_pcm_hw_params_t *params, snd_pcm_subformat_mask_t *mask); 727 728 int INTERNAL(snd_pcm_hw_params_get_channels)(const snd_pcm_hw_params_t *params, unsigned int *val); 729 int INTERNAL(snd_pcm_hw_params_get_channels_min)(const snd_pcm_hw_params_t *params, unsigned int *val); 730 int INTERNAL(snd_pcm_hw_params_get_channels_max)(const snd_pcm_hw_params_t *params, unsigned int *val); 731 int snd_pcm_hw_params_test_channels(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int val); 732 int snd_pcm_hw_params_set_channels(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int val); 733 int snd_pcm_hw_params_set_channels_min(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val); 734 int snd_pcm_hw_params_set_channels_max(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val); 735 int snd_pcm_hw_params_set_channels_minmax(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *min, unsigned int *max); 736 int INTERNAL(snd_pcm_hw_params_set_channels_near)(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val); 737 int INTERNAL(snd_pcm_hw_params_set_channels_first)(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val); 738 int INTERNAL(snd_pcm_hw_params_set_channels_last)(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val); 739 740 int INTERNAL(snd_pcm_hw_params_get_rate)(const snd_pcm_hw_params_t *params, unsigned int *val, int *dir); 741 int INTERNAL(snd_pcm_hw_params_get_rate_min)(const snd_pcm_hw_params_t *params, unsigned int *val, int *dir); 742 int INTERNAL(snd_pcm_hw_params_get_rate_max)(const snd_pcm_hw_params_t *params, unsigned int *val, int *dir); 743 int snd_pcm_hw_params_test_rate(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int val, int dir); 744 int snd_pcm_hw_params_set_rate(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int val, int dir); 745 int snd_pcm_hw_params_set_rate_min(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir); 746 int snd_pcm_hw_params_set_rate_max(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir); 747 int snd_pcm_hw_params_set_rate_minmax(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *min, int *mindir, unsigned int *max, int *maxdir); 748 int INTERNAL(snd_pcm_hw_params_set_rate_near)(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir); 749 int INTERNAL(snd_pcm_hw_params_set_rate_first)(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir); 750 int INTERNAL(snd_pcm_hw_params_set_rate_last)(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir); 751 752 int INTERNAL(snd_pcm_hw_params_get_period_time)(const snd_pcm_hw_params_t *params, unsigned int *val, int *dir); 753 int INTERNAL(snd_pcm_hw_params_get_period_time_min)(const snd_pcm_hw_params_t *params, unsigned int *val, int *dir); 754 int INTERNAL(snd_pcm_hw_params_get_period_time_max)(const snd_pcm_hw_params_t *params, unsigned int *val, int *dir); 755 int snd_pcm_hw_params_test_period_time(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int val, int dir); 756 int snd_pcm_hw_params_set_period_time(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int val, int dir); 757 int snd_pcm_hw_params_set_period_time_min(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir); 758 int snd_pcm_hw_params_set_period_time_max(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir); 759 int snd_pcm_hw_params_set_period_time_minmax(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *min, int *mindir, unsigned int *max, int *maxdir); 760 int INTERNAL(snd_pcm_hw_params_set_period_time_near)(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir); 761 int INTERNAL(snd_pcm_hw_params_set_period_time_first)(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir); 762 int INTERNAL(snd_pcm_hw_params_set_period_time_last)(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir); 763 764 int INTERNAL(snd_pcm_hw_params_get_period_size)(const snd_pcm_hw_params_t *params, snd_pcm_uframes_t *frames, int *dir); 765 int INTERNAL(snd_pcm_hw_params_get_period_size_min)(const snd_pcm_hw_params_t *params, snd_pcm_uframes_t *frames, int *dir); 766 int INTERNAL(snd_pcm_hw_params_get_period_size_max)(const snd_pcm_hw_params_t *params, snd_pcm_uframes_t *frames, int *dir); 767 int snd_pcm_hw_params_test_period_size(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_uframes_t val, int dir); 768 int snd_pcm_hw_params_set_period_size(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_uframes_t val, int dir); 769 int snd_pcm_hw_params_set_period_size_min(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_uframes_t *val, int *dir); 770 int snd_pcm_hw_params_set_period_size_max(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_uframes_t *val, int *dir); 771 int snd_pcm_hw_params_set_period_size_minmax(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_uframes_t *min, int *mindir, snd_pcm_uframes_t *max, int *maxdir); 772 int INTERNAL(snd_pcm_hw_params_set_period_size_near)(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_uframes_t *val, int *dir); 773 int INTERNAL(snd_pcm_hw_params_set_period_size_first)(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_uframes_t *val, int *dir); 774 int INTERNAL(snd_pcm_hw_params_set_period_size_last)(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_uframes_t *val, int *dir); 775 int snd_pcm_hw_params_set_period_size_integer(snd_pcm_t *pcm, snd_pcm_hw_params_t *params); 776 777 int INTERNAL(snd_pcm_hw_params_get_periods)(const snd_pcm_hw_params_t *params, unsigned int *val, int *dir); 778 int INTERNAL(snd_pcm_hw_params_get_periods_min)(const snd_pcm_hw_params_t *params, unsigned int *val, int *dir); 779 int INTERNAL(snd_pcm_hw_params_get_periods_max)(const snd_pcm_hw_params_t *params, unsigned int *val, int *dir); 780 int snd_pcm_hw_params_test_periods(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int val, int dir); 781 int snd_pcm_hw_params_set_periods(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int val, int dir); 782 int snd_pcm_hw_params_set_periods_min(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir); 783 int snd_pcm_hw_params_set_periods_max(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir); 784 int snd_pcm_hw_params_set_periods_minmax(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *min, int *mindir, unsigned int *max, int *maxdir); 785 int INTERNAL(snd_pcm_hw_params_set_periods_near)(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir); 786 int INTERNAL(snd_pcm_hw_params_set_periods_first)(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir); 787 int INTERNAL(snd_pcm_hw_params_set_periods_last)(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir); 788 int snd_pcm_hw_params_set_periods_integer(snd_pcm_t *pcm, snd_pcm_hw_params_t *params); 789 790 int INTERNAL(snd_pcm_hw_params_get_buffer_time)(const snd_pcm_hw_params_t *params, unsigned int *val, int *dir); 791 int INTERNAL(snd_pcm_hw_params_get_buffer_time_min)(const snd_pcm_hw_params_t *params, unsigned int *val, int *dir); 792 int INTERNAL(snd_pcm_hw_params_get_buffer_time_max)(const snd_pcm_hw_params_t *params, unsigned int *val, int *dir); 793 int snd_pcm_hw_params_test_buffer_time(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int val, int dir); 794 int snd_pcm_hw_params_set_buffer_time(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int val, int dir); 795 int snd_pcm_hw_params_set_buffer_time_min(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir); 796 int snd_pcm_hw_params_set_buffer_time_max(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir); 797 int snd_pcm_hw_params_set_buffer_time_minmax(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *min, int *mindir, unsigned int *max, int *maxdir); 798 int INTERNAL(snd_pcm_hw_params_set_buffer_time_near)(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir); 799 int INTERNAL(snd_pcm_hw_params_set_buffer_time_first)(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir); 800 int INTERNAL(snd_pcm_hw_params_set_buffer_time_last)(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir); 801 802 int INTERNAL(snd_pcm_hw_params_get_buffer_size)(const snd_pcm_hw_params_t *params, snd_pcm_uframes_t *val); 803 int INTERNAL(snd_pcm_hw_params_get_buffer_size_min)(const snd_pcm_hw_params_t *params, snd_pcm_uframes_t *val); 804 int INTERNAL(snd_pcm_hw_params_get_buffer_size_max)(const snd_pcm_hw_params_t *params, snd_pcm_uframes_t *val); 805 int snd_pcm_hw_params_test_buffer_size(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_uframes_t val); 806 int snd_pcm_hw_params_set_buffer_size(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_uframes_t val); 807 int snd_pcm_hw_params_set_buffer_size_min(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_uframes_t *val); 808 int snd_pcm_hw_params_set_buffer_size_max(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_uframes_t *val); 809 int snd_pcm_hw_params_set_buffer_size_minmax(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_uframes_t *min, snd_pcm_uframes_t *max); 810 int INTERNAL(snd_pcm_hw_params_set_buffer_size_near)(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_uframes_t *val); 811 int INTERNAL(snd_pcm_hw_params_set_buffer_size_first)(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_uframes_t *val); 812 int INTERNAL(snd_pcm_hw_params_set_buffer_size_last)(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_uframes_t *val); 813 814 int snd_pcm_sw_params_set_tstamp_mode(snd_pcm_t *pcm, snd_pcm_sw_params_t *params, snd_pcm_tstamp_t val); 815 int INTERNAL(snd_pcm_sw_params_get_tstamp_mode)(const snd_pcm_sw_params_t *params, snd_pcm_tstamp_t *val); 816 int snd_pcm_sw_params_set_avail_min(snd_pcm_t *pcm, snd_pcm_sw_params_t *params, snd_pcm_uframes_t val); 817 int INTERNAL(snd_pcm_sw_params_get_avail_min)(const snd_pcm_sw_params_t *params, snd_pcm_uframes_t *val); 818 int snd_pcm_sw_params_set_start_threshold(snd_pcm_t *pcm, snd_pcm_sw_params_t *params, snd_pcm_uframes_t val); 819 int INTERNAL(snd_pcm_sw_params_get_start_threshold)(const snd_pcm_sw_params_t *paramsm, snd_pcm_uframes_t *val); 820 int snd_pcm_sw_params_set_stop_threshold(snd_pcm_t *pcm, snd_pcm_sw_params_t *params, snd_pcm_uframes_t val); 821 int INTERNAL(snd_pcm_sw_params_get_stop_threshold)(const snd_pcm_sw_params_t *params, snd_pcm_uframes_t *val); 822 int snd_pcm_sw_params_set_silence_threshold(snd_pcm_t *pcm, snd_pcm_sw_params_t *params, snd_pcm_uframes_t val); 823 int INTERNAL(snd_pcm_sw_params_get_silence_threshold)(const snd_pcm_sw_params_t *params, snd_pcm_uframes_t *val); 824 int snd_pcm_sw_params_set_silence_size(snd_pcm_t *pcm, snd_pcm_sw_params_t *params, snd_pcm_uframes_t val); 825 int INTERNAL(snd_pcm_sw_params_get_silence_size)(const snd_pcm_sw_params_t *params, snd_pcm_uframes_t *val); 826 #endif /* INTERNAL */ 827 828 const char *snd_pcm_hw_param_name(snd_pcm_hw_param_t param); 829 void snd_pcm_hw_param_dump(const snd_pcm_hw_params_t *params, 830 snd_pcm_hw_param_t var, snd_output_t *out); 831 #if 0 832 int snd_pcm_hw_strategy_simple_near(snd_pcm_hw_strategy_t *strategy, int order, 833 snd_pcm_hw_param_t var, 834 unsigned int best, 835 unsigned int mul); 836 int snd_pcm_hw_strategy_simple_choices(snd_pcm_hw_strategy_t *strategy, int order, 837 snd_pcm_hw_param_t var, 838 unsigned int count, 839 snd_pcm_hw_strategy_simple_choices_list_t *choices); 840 #endif 841 842 #define SCONF_MANDATORY 1 843 #define SCONF_UNCHANGED 2 844 845 int snd_pcm_slave_conf(snd_config_t *root, snd_config_t *conf, 846 snd_config_t **pcm_conf, unsigned int count, ...); 847 848 #define SND_PCM_APPEND (1<<8) 849 850 int snd_pcm_open_named_slave(snd_pcm_t **pcmp, const char *name, 851 snd_config_t *root, 852 snd_config_t *conf, snd_pcm_stream_t stream, 853 int mode, snd_config_t *parent_conf); 854 static inline int 855 snd_pcm_open_slave(snd_pcm_t **pcmp, snd_config_t *root, 856 snd_config_t *conf, snd_pcm_stream_t stream, 857 int mode, snd_config_t *parent_conf) 858 { 859 return snd_pcm_open_named_slave(pcmp, NULL, root, conf, stream, 860 mode, parent_conf); 861 } 862 int snd_pcm_conf_generic_id(const char *id); 863 864 int snd_pcm_hw_open_fd(snd_pcm_t **pcmp, const char *name, int fd, int mmap_emulation, int sync_ptr_ioctl); 865 int __snd_pcm_mmap_emul_open(snd_pcm_t **pcmp, const char *name, 866 snd_pcm_t *slave, int close_slave); 867 868 int snd_pcm_wait_nocheck(snd_pcm_t *pcm, int timeout); 869 870 const snd_config_t *snd_pcm_rate_get_default_converter(snd_config_t *root); 871 872 #define SND_PCM_HW_PARBIT_ACCESS (1U << SND_PCM_HW_PARAM_ACCESS) 873 #define SND_PCM_HW_PARBIT_FORMAT (1U << SND_PCM_HW_PARAM_FORMAT) 874 #define SND_PCM_HW_PARBIT_SUBFORMAT (1U << SND_PCM_HW_PARAM_SUBFORMAT) 875 #define SND_PCM_HW_PARBIT_CHANNELS (1U << SND_PCM_HW_PARAM_CHANNELS) 876 #define SND_PCM_HW_PARBIT_RATE (1U << SND_PCM_HW_PARAM_RATE) 877 #define SND_PCM_HW_PARBIT_PERIOD_TIME (1U << SND_PCM_HW_PARAM_PERIOD_TIME) 878 #define SND_PCM_HW_PARBIT_PERIOD_SIZE (1U << SND_PCM_HW_PARAM_PERIOD_SIZE) 879 #define SND_PCM_HW_PARBIT_PERIODS (1U << SND_PCM_HW_PARAM_PERIODS) 880 #define SND_PCM_HW_PARBIT_BUFFER_TIME (1U << SND_PCM_HW_PARAM_BUFFER_TIME) 881 #define SND_PCM_HW_PARBIT_BUFFER_SIZE (1U << SND_PCM_HW_PARAM_BUFFER_SIZE) 882 #define SND_PCM_HW_PARBIT_SAMPLE_BITS (1U << SND_PCM_HW_PARAM_SAMPLE_BITS) 883 #define SND_PCM_HW_PARBIT_FRAME_BITS (1U << SND_PCM_HW_PARAM_FRAME_BITS) 884 #define SND_PCM_HW_PARBIT_PERIOD_BYTES (1U << SND_PCM_HW_PARAM_PERIOD_BYTES) 885 #define SND_PCM_HW_PARBIT_BUFFER_BYTES (1U << SND_PCM_HW_PARAM_BUFFER_BYTES) 886 #define SND_PCM_HW_PARBIT_TICK_TIME (1U << SND_PCM_HW_PARAM_TICK_TIME) 887 888 889 #define SND_PCM_ACCBIT_MMAP { ((1U << SND_PCM_ACCESS_MMAP_INTERLEAVED) | \ 890 (1U << SND_PCM_ACCESS_MMAP_NONINTERLEAVED) | \ 891 (1U << SND_PCM_ACCESS_MMAP_COMPLEX)) } 892 #define SND_PCM_ACCBIT_MMAPI { (1U << SND_PCM_ACCESS_MMAP_INTERLEAVED) } 893 #define SND_PCM_ACCBIT_MMAPN { (1U << SND_PCM_ACCESS_MMAP_NONINTERLEAVED) } 894 #define SND_PCM_ACCBIT_MMAPC { (1U << SND_PCM_ACCESS_MMAP_COMPLEX) } 895 896 #define SND_PCM_ACCBIT_SHM { ((1U << SND_PCM_ACCESS_MMAP_INTERLEAVED) | \ 897 (1U << SND_PCM_ACCESS_RW_INTERLEAVED) | \ 898 (1U << SND_PCM_ACCESS_MMAP_NONINTERLEAVED) | \ 899 (1U << SND_PCM_ACCESS_RW_NONINTERLEAVED)) } 900 #define SND_PCM_ACCBIT_SHMI { ((1U << SND_PCM_ACCESS_MMAP_INTERLEAVED) | \ 901 (1U << SND_PCM_ACCESS_RW_INTERLEAVED)) } 902 #define SND_PCM_ACCBIT_SHMN { ((1U << SND_PCM_ACCESS_MMAP_NONINTERLEAVED) | \ 903 (1U << SND_PCM_ACCESS_RW_NONINTERLEAVED)) } 904 905 #define SND_PCM_FMTBIT_LINEAR \ 906 { ((1U << SND_PCM_FORMAT_S8) | \ 907 (1U << SND_PCM_FORMAT_U8) | \ 908 (1U << SND_PCM_FORMAT_S16_LE) | \ 909 (1U << SND_PCM_FORMAT_S16_BE) | \ 910 (1U << SND_PCM_FORMAT_U16_LE) | \ 911 (1U << SND_PCM_FORMAT_U16_BE) | \ 912 (1U << SND_PCM_FORMAT_S24_LE) | \ 913 (1U << SND_PCM_FORMAT_S24_BE) | \ 914 (1U << SND_PCM_FORMAT_U24_LE) | \ 915 (1U << SND_PCM_FORMAT_U24_BE) | \ 916 (1U << SND_PCM_FORMAT_S32_LE) | \ 917 (1U << SND_PCM_FORMAT_S32_BE) | \ 918 (1U << SND_PCM_FORMAT_U32_LE) | \ 919 (1U << SND_PCM_FORMAT_U32_BE)), \ 920 ((1U << (SND_PCM_FORMAT_S24_3LE - 32)) | \ 921 (1U << (SND_PCM_FORMAT_U24_3LE - 32)) | \ 922 (1U << (SND_PCM_FORMAT_S24_3BE - 32)) | \ 923 (1U << (SND_PCM_FORMAT_U24_3BE - 32)) | \ 924 (1U << (SND_PCM_FORMAT_S20_3LE - 32)) | \ 925 (1U << (SND_PCM_FORMAT_U20_3LE - 32)) | \ 926 (1U << (SND_PCM_FORMAT_S20_3BE - 32)) | \ 927 (1U << (SND_PCM_FORMAT_U20_3BE - 32)) | \ 928 (1U << (SND_PCM_FORMAT_S18_3LE - 32)) | \ 929 (1U << (SND_PCM_FORMAT_U18_3LE - 32)) | \ 930 (1U << (SND_PCM_FORMAT_S18_3BE - 32)) | \ 931 (1U << (SND_PCM_FORMAT_U18_3BE - 32))) } 932 933 934 #define SND_PCM_FMTBIT_FLOAT \ 935 { ((1U << SND_PCM_FORMAT_FLOAT_LE) | \ 936 (1U << SND_PCM_FORMAT_FLOAT_BE) | \ 937 (1U << SND_PCM_FORMAT_FLOAT64_LE) | \ 938 (1U << SND_PCM_FORMAT_FLOAT64_BE)) } 939 940 941 typedef union snd_tmp_float { 942 float f; 943 int32_t i; 944 } snd_tmp_float_t; 945 946 typedef union snd_tmp_double { 947 double d; 948 int64_t l; 949 } snd_tmp_double_t; 950 951 /* get the current timestamp */ 952 static inline void gettimestamp(snd_htimestamp_t *tstamp, int monotonic) 953 { 954 #if defined(HAVE_CLOCK_GETTIME) && defined(CLOCK_MONOTONIC) 955 if (monotonic) { 956 clock_gettime(CLOCK_MONOTONIC, tstamp); 957 } else { 958 #endif 959 struct timeval tv; 960 961 gettimeofday(&tv, 0); 962 tstamp->tv_sec = tv.tv_sec; 963 tstamp->tv_nsec = tv.tv_usec * 1000L; 964 #if defined(HAVE_CLOCK_GETTIME) && defined(CLOCK_MONOTONIC) 965 } 966 #endif 967 } 968
