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pcm.h
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1
12 /*
13 * This library is free software; you can redistribute it and/or modify
14 * it under the terms of the GNU Lesser General Public License as
15 * published by the Free Software Foundation; either version 2.1 of
16 * the License, or (at your option) any later version.
17 *
18 * This program is distributed in the hope that it will be useful,
19 * but WITHOUT ANY WARRANTY; without even the implied warranty of
20 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21 * GNU Lesser General Public License for more details.
22 *
23 * You should have received a copy of the GNU Lesser General Public
24 * License along with this library; if not, write to the Free Software
25 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
26 *
27 */
28
29 #ifndef __ALSA_PCM_H
30 #define __ALSA_PCM_H
31
32 #ifdef __cplusplus
33 extern "C" {
34 #endif
35
36 #include <stdint.h>
37
45 #define SND_PCM_DLSYM_VERSION _dlsym_pcm_001
46
48 typedef struct _snd_pcm_info snd_pcm_info_t;
49
64 typedef struct _snd_pcm_hw_params snd_pcm_hw_params_t;
65
67 typedef struct _snd_pcm_sw_params snd_pcm_sw_params_t;
69 typedef struct _snd_pcm_status snd_pcm_status_t;
71 typedef struct _snd_pcm_access_mask snd_pcm_access_mask_t;
73 typedef struct _snd_pcm_format_mask snd_pcm_format_mask_t;
75 typedef struct _snd_pcm_subformat_mask snd_pcm_subformat_mask_t;
76
78 typedef enum _snd_pcm_class {
81 SND_PCM_CLASS_GENERIC = 0,
83 SND_PCM_CLASS_MULTI,
85 SND_PCM_CLASS_MODEM,
87 SND_PCM_CLASS_DIGITIZER,
88 SND_PCM_CLASS_LAST = SND_PCM_CLASS_DIGITIZER
89 } snd_pcm_class_t;
90
92 typedef enum _snd_pcm_subclass {
94 SND_PCM_SUBCLASS_GENERIC_MIX = 0,
96 SND_PCM_SUBCLASS_MULTI_MIX,
97 SND_PCM_SUBCLASS_LAST = SND_PCM_SUBCLASS_MULTI_MIX
98 } snd_pcm_subclass_t;
99
101 typedef enum _snd_pcm_stream {
103 SND_PCM_STREAM_PLAYBACK = 0,
105 SND_PCM_STREAM_CAPTURE,
106 SND_PCM_STREAM_LAST = SND_PCM_STREAM_CAPTURE
107 } snd_pcm_stream_t;
108
110 typedef enum _snd_pcm_access {
112 SND_PCM_ACCESS_MMAP_INTERLEAVED = 0,
114 SND_PCM_ACCESS_MMAP_NONINTERLEAVED,
116 SND_PCM_ACCESS_MMAP_COMPLEX,
118 SND_PCM_ACCESS_RW_INTERLEAVED,
120 SND_PCM_ACCESS_RW_NONINTERLEAVED,
121 SND_PCM_ACCESS_LAST = SND_PCM_ACCESS_RW_NONINTERLEAVED
122 } snd_pcm_access_t;
123
125 typedef enum _snd_pcm_format {
127 SND_PCM_FORMAT_UNKNOWN = -1,
129 SND_PCM_FORMAT_S8 = 0,
131 SND_PCM_FORMAT_U8,
133 SND_PCM_FORMAT_S16_LE,
135 SND_PCM_FORMAT_S16_BE,
137 SND_PCM_FORMAT_U16_LE,
139 SND_PCM_FORMAT_U16_BE,
141 SND_PCM_FORMAT_S24_LE,
143 SND_PCM_FORMAT_S24_BE,
145 SND_PCM_FORMAT_U24_LE,
147 SND_PCM_FORMAT_U24_BE,
149 SND_PCM_FORMAT_S32_LE,
151 SND_PCM_FORMAT_S32_BE,
153 SND_PCM_FORMAT_U32_LE,
155 SND_PCM_FORMAT_U32_BE,
157 SND_PCM_FORMAT_FLOAT_LE,
159 SND_PCM_FORMAT_FLOAT_BE,
161 SND_PCM_FORMAT_FLOAT64_LE,
163 SND_PCM_FORMAT_FLOAT64_BE,
165 SND_PCM_FORMAT_IEC958_SUBFRAME_LE,
167 SND_PCM_FORMAT_IEC958_SUBFRAME_BE,
169 SND_PCM_FORMAT_MU_LAW,
171 SND_PCM_FORMAT_A_LAW,
173 SND_PCM_FORMAT_IMA_ADPCM,
175 SND_PCM_FORMAT_MPEG,
177 SND_PCM_FORMAT_GSM,
179 SND_PCM_FORMAT_S20_LE,
181 SND_PCM_FORMAT_S20_BE,
183 SND_PCM_FORMAT_U20_LE,
185 SND_PCM_FORMAT_U20_BE,
187 SND_PCM_FORMAT_SPECIAL = 31,
189 SND_PCM_FORMAT_S24_3LE = 32,
191 SND_PCM_FORMAT_S24_3BE,
193 SND_PCM_FORMAT_U24_3LE,
195 SND_PCM_FORMAT_U24_3BE,
197 SND_PCM_FORMAT_S20_3LE,
199 SND_PCM_FORMAT_S20_3BE,
201 SND_PCM_FORMAT_U20_3LE,
203 SND_PCM_FORMAT_U20_3BE,
205 SND_PCM_FORMAT_S18_3LE,
207 SND_PCM_FORMAT_S18_3BE,
209 SND_PCM_FORMAT_U18_3LE,
211 SND_PCM_FORMAT_U18_3BE,
212 /* G.723 (ADPCM) 24 kbit/s, 8 samples in 3 bytes */
213 SND_PCM_FORMAT_G723_24,
214 /* G.723 (ADPCM) 24 kbit/s, 1 sample in 1 byte */
215 SND_PCM_FORMAT_G723_24_1B,
216 /* G.723 (ADPCM) 40 kbit/s, 8 samples in 3 bytes */
217 SND_PCM_FORMAT_G723_40,
218 /* G.723 (ADPCM) 40 kbit/s, 1 sample in 1 byte */
219 SND_PCM_FORMAT_G723_40_1B,
220 /* Direct Stream Digital (DSD) in 1-byte samples (x8) */
221 SND_PCM_FORMAT_DSD_U8,
222 /* Direct Stream Digital (DSD) in 2-byte samples (x16) */
223 SND_PCM_FORMAT_DSD_U16_LE,
224 /* Direct Stream Digital (DSD) in 4-byte samples (x32) */
225 SND_PCM_FORMAT_DSD_U32_LE,
226 /* Direct Stream Digital (DSD) in 2-byte samples (x16) */
227 SND_PCM_FORMAT_DSD_U16_BE,
228 /* Direct Stream Digital (DSD) in 4-byte samples (x32) */
229 SND_PCM_FORMAT_DSD_U32_BE,
230 SND_PCM_FORMAT_LAST = SND_PCM_FORMAT_DSD_U32_BE,
231
232 #if __BYTE_ORDER == __LITTLE_ENDIAN
233
234 SND_PCM_FORMAT_S16 = SND_PCM_FORMAT_S16_LE,
236 SND_PCM_FORMAT_U16 = SND_PCM_FORMAT_U16_LE,
238 SND_PCM_FORMAT_S24 = SND_PCM_FORMAT_S24_LE,
240 SND_PCM_FORMAT_U24 = SND_PCM_FORMAT_U24_LE,
242 SND_PCM_FORMAT_S32 = SND_PCM_FORMAT_S32_LE,
244 SND_PCM_FORMAT_U32 = SND_PCM_FORMAT_U32_LE,
246 SND_PCM_FORMAT_FLOAT = SND_PCM_FORMAT_FLOAT_LE,
248 SND_PCM_FORMAT_FLOAT64 = SND_PCM_FORMAT_FLOAT64_LE,
250 SND_PCM_FORMAT_IEC958_SUBFRAME = SND_PCM_FORMAT_IEC958_SUBFRAME_LE,
252 SND_PCM_FORMAT_S20 = SND_PCM_FORMAT_S20_LE,
254 SND_PCM_FORMAT_U20 = SND_PCM_FORMAT_U20_LE,
255 #elif __BYTE_ORDER == __BIG_ENDIAN
256
257 SND_PCM_FORMAT_S16 = SND_PCM_FORMAT_S16_BE,
259 SND_PCM_FORMAT_U16 = SND_PCM_FORMAT_U16_BE,
261 SND_PCM_FORMAT_S24 = SND_PCM_FORMAT_S24_BE,
263 SND_PCM_FORMAT_U24 = SND_PCM_FORMAT_U24_BE,
265 SND_PCM_FORMAT_S32 = SND_PCM_FORMAT_S32_BE,
267 SND_PCM_FORMAT_U32 = SND_PCM_FORMAT_U32_BE,
269 SND_PCM_FORMAT_FLOAT = SND_PCM_FORMAT_FLOAT_BE,
271 SND_PCM_FORMAT_FLOAT64 = SND_PCM_FORMAT_FLOAT64_BE,
273 SND_PCM_FORMAT_IEC958_SUBFRAME = SND_PCM_FORMAT_IEC958_SUBFRAME_BE,
275 SND_PCM_FORMAT_S20 = SND_PCM_FORMAT_S20_BE,
277 SND_PCM_FORMAT_U20 = SND_PCM_FORMAT_U20_BE,
278 #else
279 #error "Unknown endian"
280 #endif
281 } snd_pcm_format_t;
282
284 typedef enum _snd_pcm_subformat {
286 SND_PCM_SUBFORMAT_STD = 0,
287 SND_PCM_SUBFORMAT_LAST = SND_PCM_SUBFORMAT_STD
288 } snd_pcm_subformat_t;
289
291 typedef enum _snd_pcm_state {
293 SND_PCM_STATE_OPEN = 0,
295 SND_PCM_STATE_SETUP,
297 SND_PCM_STATE_PREPARED,
299 SND_PCM_STATE_RUNNING,
301 SND_PCM_STATE_XRUN,
303 SND_PCM_STATE_DRAINING,
305 SND_PCM_STATE_PAUSED,
307 SND_PCM_STATE_SUSPENDED,
309 SND_PCM_STATE_DISCONNECTED,
310 SND_PCM_STATE_LAST = SND_PCM_STATE_DISCONNECTED,
312 SND_PCM_STATE_PRIVATE1 = 1024
313 } snd_pcm_state_t;
314
316 typedef enum _snd_pcm_start {
318 SND_PCM_START_DATA = 0,
320 SND_PCM_START_EXPLICIT,
321 SND_PCM_START_LAST = SND_PCM_START_EXPLICIT
322 } snd_pcm_start_t;
323
325 typedef enum _snd_pcm_xrun {
327 SND_PCM_XRUN_NONE = 0,
329 SND_PCM_XRUN_STOP,
330 SND_PCM_XRUN_LAST = SND_PCM_XRUN_STOP
331 } snd_pcm_xrun_t;
332
334 typedef enum _snd_pcm_tstamp {
336 SND_PCM_TSTAMP_NONE = 0,
338 SND_PCM_TSTAMP_ENABLE,
342 SND_PCM_TSTAMP_MMAP = SND_PCM_TSTAMP_ENABLE,
343 SND_PCM_TSTAMP_LAST = SND_PCM_TSTAMP_ENABLE
344 } snd_pcm_tstamp_t;
345
346 typedef enum _snd_pcm_tstamp_type {
347 SND_PCM_TSTAMP_TYPE_GETTIMEOFDAY = 0,
348 SND_PCM_TSTAMP_TYPE_MONOTONIC,
349 SND_PCM_TSTAMP_TYPE_MONOTONIC_RAW,
350 SND_PCM_TSTAMP_TYPE_LAST = SND_PCM_TSTAMP_TYPE_MONOTONIC_RAW,
351 } snd_pcm_tstamp_type_t;
352
353 typedef struct _snd_pcm_audio_tstamp_config {
354 /* 5 of max 16 bits used */
355 unsigned int type_requested:4;
356 unsigned int report_delay:1; /* add total delay to A/D or D/A */
357 } snd_pcm_audio_tstamp_config_t;
358
359 typedef struct _snd_pcm_audio_tstamp_report {
360 /* 6 of max 16 bits used for bit-fields */
361
362 /* for backwards compatibility */
363 unsigned int valid:1;
364
365 /* actual type if hardware could not support requested timestamp */
366 unsigned int actual_type:4;
367
368 /* accuracy represented in ns units */
369 unsigned int accuracy_report:1; /* 0 if accuracy unknown, 1 if accuracy field is valid */
370 unsigned int accuracy; /* up to 4.29s, will be packed in separate field */
371 } snd_pcm_audio_tstamp_report_t;
372
374 typedef unsigned long snd_pcm_uframes_t;
376 typedef long snd_pcm_sframes_t;
377
379 #define SND_PCM_NONBLOCK 0x00000001
380
381 #define SND_PCM_ASYNC 0x00000002
382
383 #define SND_PCM_ABORT 0x00008000
384
385 #define SND_PCM_NO_AUTO_RESAMPLE 0x00010000
386
387 #define SND_PCM_NO_AUTO_CHANNELS 0x00020000
388
389 #define SND_PCM_NO_AUTO_FORMAT 0x00040000
390
391 #define SND_PCM_NO_SOFTVOL 0x00080000
392
394 typedef struct _snd_pcm snd_pcm_t;
395
397 enum _snd_pcm_type {
399 SND_PCM_TYPE_HW = 0,
401 SND_PCM_TYPE_HOOKS,
404 SND_PCM_TYPE_MULTI,
406 SND_PCM_TYPE_FILE,
408 SND_PCM_TYPE_NULL,
410 SND_PCM_TYPE_SHM,
412 SND_PCM_TYPE_INET,
414 SND_PCM_TYPE_COPY,
416 SND_PCM_TYPE_LINEAR,
418 SND_PCM_TYPE_ALAW,
420 SND_PCM_TYPE_MULAW,
422 SND_PCM_TYPE_ADPCM,
424 SND_PCM_TYPE_RATE,
426 SND_PCM_TYPE_ROUTE,
428 SND_PCM_TYPE_PLUG,
430 SND_PCM_TYPE_SHARE,
432 SND_PCM_TYPE_METER,
434 SND_PCM_TYPE_MIX,
436 SND_PCM_TYPE_DROUTE,
438 SND_PCM_TYPE_LBSERVER,
440 SND_PCM_TYPE_LINEAR_FLOAT,
442 SND_PCM_TYPE_LADSPA,
444 SND_PCM_TYPE_DMIX,
446 SND_PCM_TYPE_JACK,
448 SND_PCM_TYPE_DSNOOP,
450 SND_PCM_TYPE_DSHARE,
452 SND_PCM_TYPE_IEC958,
454 SND_PCM_TYPE_SOFTVOL,
456 SND_PCM_TYPE_IOPLUG,
458 SND_PCM_TYPE_EXTPLUG,
460 SND_PCM_TYPE_MMAP_EMUL,
461 SND_PCM_TYPE_LAST = SND_PCM_TYPE_MMAP_EMUL
462 };
463
465 typedef enum _snd_pcm_type snd_pcm_type_t;
466
468 typedef struct _snd_pcm_channel_area {
470 void *addr;
472 unsigned int first;
474 unsigned int step;
475 } snd_pcm_channel_area_t;
476
478 typedef union _snd_pcm_sync_id {
480 unsigned char id[16];
482 unsigned short id16[8];
484 unsigned int id32[4];
485 } snd_pcm_sync_id_t;
486
488 typedef struct _snd_pcm_scope snd_pcm_scope_t;
489
490 int snd_pcm_open(snd_pcm_t **pcm, const char *name,
491 snd_pcm_stream_t stream, int mode);
492 int snd_pcm_open_lconf(snd_pcm_t **pcm, const char *name,
493 snd_pcm_stream_t stream, int mode,
494 snd_config_t *lconf);
495 int snd_pcm_open_fallback(snd_pcm_t **pcm, snd_config_t *root,
496 const char *name, const char *orig_name,
497 snd_pcm_stream_t stream, int mode);
498
499 int snd_pcm_close(snd_pcm_t *pcm);
500 const char *snd_pcm_name(snd_pcm_t *pcm);
501 snd_pcm_type_t snd_pcm_type(snd_pcm_t *pcm);
502 snd_pcm_stream_t snd_pcm_stream(snd_pcm_t *pcm);
503 int snd_pcm_poll_descriptors_count(snd_pcm_t *pcm);
504 int snd_pcm_poll_descriptors(snd_pcm_t *pcm, struct pollfd *pfds, unsigned int space);
505 int snd_pcm_poll_descriptors_revents(snd_pcm_t *pcm, struct pollfd *pfds, unsigned int nfds, unsigned short *revents);
506 int snd_pcm_nonblock(snd_pcm_t *pcm, int nonblock);
507 static __inline__ int snd_pcm_abort(snd_pcm_t *pcm) { return snd_pcm_nonblock(pcm, 2); }
508 int snd_async_add_pcm_handler(snd_async_handler_t **handler, snd_pcm_t *pcm,
509 snd_async_callback_t callback, void *private_data);
510 snd_pcm_t *snd_async_handler_get_pcm(snd_async_handler_t *handler);
511 int snd_pcm_info(snd_pcm_t *pcm, snd_pcm_info_t *info);
512 int snd_pcm_hw_params_current(snd_pcm_t *pcm, snd_pcm_hw_params_t *params);
513 int snd_pcm_hw_params(snd_pcm_t *pcm, snd_pcm_hw_params_t *params);
514 int snd_pcm_hw_free(snd_pcm_t *pcm);
515 int snd_pcm_sw_params_current(snd_pcm_t *pcm, snd_pcm_sw_params_t *params);
516 int snd_pcm_sw_params(snd_pcm_t *pcm, snd_pcm_sw_params_t *params);
517 int snd_pcm_prepare(snd_pcm_t *pcm);
518 int snd_pcm_reset(snd_pcm_t *pcm);
519 int snd_pcm_status(snd_pcm_t *pcm, snd_pcm_status_t *status);
520 int snd_pcm_start(snd_pcm_t *pcm);
521 int snd_pcm_drop(snd_pcm_t *pcm);
522 int snd_pcm_drain(snd_pcm_t *pcm);
523 int snd_pcm_pause(snd_pcm_t *pcm, int enable);
524 snd_pcm_state_t snd_pcm_state(snd_pcm_t *pcm);
525 int snd_pcm_hwsync(snd_pcm_t *pcm);
526 int snd_pcm_delay(snd_pcm_t *pcm, snd_pcm_sframes_t *delayp);
527 int snd_pcm_resume(snd_pcm_t *pcm);
528 int snd_pcm_htimestamp(snd_pcm_t *pcm, snd_pcm_uframes_t *avail, snd_htimestamp_t *tstamp);
529 snd_pcm_sframes_t snd_pcm_avail(snd_pcm_t *pcm);
530 snd_pcm_sframes_t snd_pcm_avail_update(snd_pcm_t *pcm);
531 int snd_pcm_avail_delay(snd_pcm_t *pcm, snd_pcm_sframes_t *availp, snd_pcm_sframes_t *delayp);
532 snd_pcm_sframes_t snd_pcm_rewindable(snd_pcm_t *pcm);
533 snd_pcm_sframes_t snd_pcm_rewind(snd_pcm_t *pcm, snd_pcm_uframes_t frames);
534 snd_pcm_sframes_t snd_pcm_forwardable(snd_pcm_t *pcm);
535 snd_pcm_sframes_t snd_pcm_forward(snd_pcm_t *pcm, snd_pcm_uframes_t frames);
536 snd_pcm_sframes_t snd_pcm_writei(snd_pcm_t *pcm, const void *buffer, snd_pcm_uframes_t size);
537 snd_pcm_sframes_t snd_pcm_readi(snd_pcm_t *pcm, void *buffer, snd_pcm_uframes_t size);
538 snd_pcm_sframes_t snd_pcm_writen(snd_pcm_t *pcm, void **bufs, snd_pcm_uframes_t size);
539 snd_pcm_sframes_t snd_pcm_readn(snd_pcm_t *pcm, void **bufs, snd_pcm_uframes_t size);
540 int snd_pcm_wait(snd_pcm_t *pcm, int timeout);
541
542 int snd_pcm_link(snd_pcm_t *pcm1, snd_pcm_t *pcm2);
543 int snd_pcm_unlink(snd_pcm_t *pcm);
544
546 #define SND_CHMAP_API_VERSION ((1 << 16) | (0 << 8) | 1)
547
549 enum snd_pcm_chmap_type {
550 SND_CHMAP_TYPE_NONE = 0,
551 SND_CHMAP_TYPE_FIXED,
552 SND_CHMAP_TYPE_VAR,
553 SND_CHMAP_TYPE_PAIRED,
554 SND_CHMAP_TYPE_LAST = SND_CHMAP_TYPE_PAIRED,
555 };
556
558 enum snd_pcm_chmap_position {
559 SND_CHMAP_UNKNOWN = 0,
560 SND_CHMAP_NA,
561 SND_CHMAP_MONO,
562 SND_CHMAP_FL,
563 SND_CHMAP_FR,
564 SND_CHMAP_RL,
565 SND_CHMAP_RR,
566 SND_CHMAP_FC,
567 SND_CHMAP_LFE,
568 SND_CHMAP_SL,
569 SND_CHMAP_SR,
570 SND_CHMAP_RC,
571 SND_CHMAP_FLC,
572 SND_CHMAP_FRC,
573 SND_CHMAP_RLC,
574 SND_CHMAP_RRC,
575 SND_CHMAP_FLW,
576 SND_CHMAP_FRW,
577 SND_CHMAP_FLH,
578 SND_CHMAP_FCH,
579 SND_CHMAP_FRH,
580 SND_CHMAP_TC,
581 SND_CHMAP_TFL,
582 SND_CHMAP_TFR,
583 SND_CHMAP_TFC,
584 SND_CHMAP_TRL,
585 SND_CHMAP_TRR,
586 SND_CHMAP_TRC,
587 SND_CHMAP_TFLC,
588 SND_CHMAP_TFRC,
589 SND_CHMAP_TSL,
590 SND_CHMAP_TSR,
591 SND_CHMAP_LLFE,
592 SND_CHMAP_RLFE,
593 SND_CHMAP_BC,
594 SND_CHMAP_BLC,
595 SND_CHMAP_BRC,
596 SND_CHMAP_LAST = SND_CHMAP_BRC,
597 };
598
600 #define SND_CHMAP_POSITION_MASK 0xffff
601
603 #define SND_CHMAP_PHASE_INVERSE (0x01 << 16)
604
605 #define SND_CHMAP_DRIVER_SPEC (0x02 << 16)
606
608 typedef struct snd_pcm_chmap {
609 unsigned int channels;
610 unsigned int pos[0];
611 } snd_pcm_chmap_t;
612
614 typedef struct snd_pcm_chmap_query {
615 enum snd_pcm_chmap_type type;
616 snd_pcm_chmap_t map;
617 } snd_pcm_chmap_query_t;
618
619
620 snd_pcm_chmap_query_t **snd_pcm_query_chmaps(snd_pcm_t *pcm);
621 snd_pcm_chmap_query_t **snd_pcm_query_chmaps_from_hw(int card, int dev,
622 int subdev,
623 snd_pcm_stream_t stream);
624 void snd_pcm_free_chmaps(snd_pcm_chmap_query_t **maps);
625 snd_pcm_chmap_t *snd_pcm_get_chmap(snd_pcm_t *pcm);
626 int snd_pcm_set_chmap(snd_pcm_t *pcm, const snd_pcm_chmap_t *map);
627
628 const char *snd_pcm_chmap_type_name(enum snd_pcm_chmap_type val);
629 const char *snd_pcm_chmap_name(enum snd_pcm_chmap_position val);
630 const char *snd_pcm_chmap_long_name(enum snd_pcm_chmap_position val);
631 int snd_pcm_chmap_print(const snd_pcm_chmap_t *map, size_t maxlen, char *buf);
632 unsigned int snd_pcm_chmap_from_string(const char *str);
633 snd_pcm_chmap_t *snd_pcm_chmap_parse_string(const char *str);
634
635 //int snd_pcm_mixer_element(snd_pcm_t *pcm, snd_mixer_t *mixer, snd_mixer_elem_t **elem);
636
637 /*
638 * application helpers - these functions are implemented on top
639 * of the basic API
640 */
641
642 int snd_pcm_recover(snd_pcm_t *pcm, int err, int silent);
643 int snd_pcm_set_params(snd_pcm_t *pcm,
644 snd_pcm_format_t format,
645 snd_pcm_access_t access,
646 unsigned int channels,
647 unsigned int rate,
648 int soft_resample,
649 unsigned int latency);
650 int snd_pcm_get_params(snd_pcm_t *pcm,
651 snd_pcm_uframes_t *buffer_size,
652 snd_pcm_uframes_t *period_size);
653
663 size_t snd_pcm_info_sizeof(void);
668 #define snd_pcm_info_alloca(ptr) __snd_alloca(ptr, snd_pcm_info)
669 int snd_pcm_info_malloc(snd_pcm_info_t **ptr);
670 void snd_pcm_info_free(snd_pcm_info_t *obj);
671 void snd_pcm_info_copy(snd_pcm_info_t *dst, const snd_pcm_info_t *src);
672 unsigned int snd_pcm_info_get_device(const snd_pcm_info_t *obj);
673 unsigned int snd_pcm_info_get_subdevice(const snd_pcm_info_t *obj);
674 snd_pcm_stream_t snd_pcm_info_get_stream(const snd_pcm_info_t *obj);
675 int snd_pcm_info_get_card(const snd_pcm_info_t *obj);
676 const char *snd_pcm_info_get_id(const snd_pcm_info_t *obj);
677 const char *snd_pcm_info_get_name(const snd_pcm_info_t *obj);
678 const char *snd_pcm_info_get_subdevice_name(const snd_pcm_info_t *obj);
679 snd_pcm_class_t snd_pcm_info_get_class(const snd_pcm_info_t *obj);
680 snd_pcm_subclass_t snd_pcm_info_get_subclass(const snd_pcm_info_t *obj);
681 unsigned int snd_pcm_info_get_subdevices_count(const snd_pcm_info_t *obj);
682 unsigned int snd_pcm_info_get_subdevices_avail(const snd_pcm_info_t *obj);
683 snd_pcm_sync_id_t snd_pcm_info_get_sync(const snd_pcm_info_t *obj);
684 void snd_pcm_info_set_device(snd_pcm_info_t *obj, unsigned int val);
685 void snd_pcm_info_set_subdevice(snd_pcm_info_t *obj, unsigned int val);
686 void snd_pcm_info_set_stream(snd_pcm_info_t *obj, snd_pcm_stream_t val);
687
697 int snd_pcm_hw_params_any(snd_pcm_t *pcm, snd_pcm_hw_params_t *params);
698
699 int snd_pcm_hw_params_can_mmap_sample_resolution(const snd_pcm_hw_params_t *params);
700 int snd_pcm_hw_params_is_double(const snd_pcm_hw_params_t *params);
701 int snd_pcm_hw_params_is_batch(const snd_pcm_hw_params_t *params);
702 int snd_pcm_hw_params_is_block_transfer(const snd_pcm_hw_params_t *params);
703 int snd_pcm_hw_params_is_monotonic(const snd_pcm_hw_params_t *params);
704 int snd_pcm_hw_params_can_overrange(const snd_pcm_hw_params_t *params);
705 int snd_pcm_hw_params_can_pause(const snd_pcm_hw_params_t *params);
706 int snd_pcm_hw_params_can_resume(const snd_pcm_hw_params_t *params);
707 int snd_pcm_hw_params_is_half_duplex(const snd_pcm_hw_params_t *params);
708 int snd_pcm_hw_params_is_joint_duplex(const snd_pcm_hw_params_t *params);
709 int snd_pcm_hw_params_can_sync_start(const snd_pcm_hw_params_t *params);
710 int snd_pcm_hw_params_can_disable_period_wakeup(const snd_pcm_hw_params_t *params);
711 int snd_pcm_hw_params_supports_audio_wallclock_ts(const snd_pcm_hw_params_t *params); /* deprecated, use audio_ts_type */
712 int snd_pcm_hw_params_supports_audio_ts_type(const snd_pcm_hw_params_t *params, int type);
713 int snd_pcm_hw_params_get_rate_numden(const snd_pcm_hw_params_t *params,
714 unsigned int *rate_num,
715 unsigned int *rate_den);
716 int snd_pcm_hw_params_get_sbits(const snd_pcm_hw_params_t *params);
717 int snd_pcm_hw_params_get_fifo_size(const snd_pcm_hw_params_t *params);
718
719 #if 0
720 typedef struct _snd_pcm_hw_strategy snd_pcm_hw_strategy_t;
721
722 /* choices need to be sorted on ascending badness */
723 typedef struct _snd_pcm_hw_strategy_simple_choices_list {
724 unsigned int value;
725 unsigned int badness;
726 } snd_pcm_hw_strategy_simple_choices_list_t;
727
728 int snd_pcm_hw_params_strategy(snd_pcm_t *pcm, snd_pcm_hw_params_t *params,
729 const snd_pcm_hw_strategy_t *strategy,
730 unsigned int badness_min,
731 unsigned int badness_max);
732
733 void snd_pcm_hw_strategy_free(snd_pcm_hw_strategy_t *strategy);
734 int snd_pcm_hw_strategy_simple(snd_pcm_hw_strategy_t **strategyp,
735 unsigned int badness_min,
736 unsigned int badness_max);
737 int snd_pcm_hw_params_try_explain_failure(snd_pcm_t *pcm,
738 snd_pcm_hw_params_t *fail,
739 snd_pcm_hw_params_t *success,
740 unsigned int depth,
741 snd_output_t *out);
742
743 #endif
744
745 size_t snd_pcm_hw_params_sizeof(void);
750 #define snd_pcm_hw_params_alloca(ptr) __snd_alloca(ptr, snd_pcm_hw_params)
751 int snd_pcm_hw_params_malloc(snd_pcm_hw_params_t **ptr);
752 void snd_pcm_hw_params_free(snd_pcm_hw_params_t *obj);
753 void snd_pcm_hw_params_copy(snd_pcm_hw_params_t *dst, const snd_pcm_hw_params_t *src);
754
755 #if !defined(ALSA_LIBRARY_BUILD) && !defined(ALSA_PCM_OLD_HW_PARAMS_API)
756
757 int snd_pcm_hw_params_get_access(const snd_pcm_hw_params_t *params, snd_pcm_access_t *_access);
758 int snd_pcm_hw_params_test_access(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_access_t _access);
759 int snd_pcm_hw_params_set_access(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_access_t _access);
760 int snd_pcm_hw_params_set_access_first(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_access_t *_access);
761 int snd_pcm_hw_params_set_access_last(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_access_t *_access);
762 int snd_pcm_hw_params_set_access_mask(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_access_mask_t *mask);
763 int snd_pcm_hw_params_get_access_mask(snd_pcm_hw_params_t *params, snd_pcm_access_mask_t *mask);
764
765 int snd_pcm_hw_params_get_format(const snd_pcm_hw_params_t *params, snd_pcm_format_t *val);
766 int snd_pcm_hw_params_test_format(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_format_t val);
767 int snd_pcm_hw_params_set_format(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_format_t val);
768 int snd_pcm_hw_params_set_format_first(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_format_t *format);
769 int snd_pcm_hw_params_set_format_last(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_format_t *format);
770 int snd_pcm_hw_params_set_format_mask(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_format_mask_t *mask);
771 void snd_pcm_hw_params_get_format_mask(snd_pcm_hw_params_t *params, snd_pcm_format_mask_t *mask);
772
773 int snd_pcm_hw_params_get_subformat(const snd_pcm_hw_params_t *params, snd_pcm_subformat_t *subformat);
774 int snd_pcm_hw_params_test_subformat(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_subformat_t subformat);
775 int snd_pcm_hw_params_set_subformat(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_subformat_t subformat);
776 int snd_pcm_hw_params_set_subformat_first(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_subformat_t *subformat);
777 int snd_pcm_hw_params_set_subformat_last(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_subformat_t *subformat);
778 int snd_pcm_hw_params_set_subformat_mask(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_subformat_mask_t *mask);
779 void snd_pcm_hw_params_get_subformat_mask(snd_pcm_hw_params_t *params, snd_pcm_subformat_mask_t *mask);
780
781 int snd_pcm_hw_params_get_channels(const snd_pcm_hw_params_t *params, unsigned int *val);
782 int snd_pcm_hw_params_get_channels_min(const snd_pcm_hw_params_t *params, unsigned int *val);
783 int snd_pcm_hw_params_get_channels_max(const snd_pcm_hw_params_t *params, unsigned int *val);
784 int snd_pcm_hw_params_test_channels(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int val);
785 int snd_pcm_hw_params_set_channels(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int val);
786 int snd_pcm_hw_params_set_channels_min(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val);
787 int snd_pcm_hw_params_set_channels_max(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val);
788 int snd_pcm_hw_params_set_channels_minmax(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *min, unsigned int *max);
789 int snd_pcm_hw_params_set_channels_near(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val);
790 int snd_pcm_hw_params_set_channels_first(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val);
791 int snd_pcm_hw_params_set_channels_last(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val);
792
793 int snd_pcm_hw_params_get_rate(const snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
794 int snd_pcm_hw_params_get_rate_min(const snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
795 int snd_pcm_hw_params_get_rate_max(const snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
796 int snd_pcm_hw_params_test_rate(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int val, int dir);
797 int snd_pcm_hw_params_set_rate(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int val, int dir);
798 int snd_pcm_hw_params_set_rate_min(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
799 int snd_pcm_hw_params_set_rate_max(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
800 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);
801 int snd_pcm_hw_params_set_rate_near(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
802 int snd_pcm_hw_params_set_rate_first(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
803 int snd_pcm_hw_params_set_rate_last(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
804 int snd_pcm_hw_params_set_rate_resample(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int val);
805 int snd_pcm_hw_params_get_rate_resample(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val);
806 int snd_pcm_hw_params_set_export_buffer(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int val);
807 int snd_pcm_hw_params_get_export_buffer(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val);
808 int snd_pcm_hw_params_set_period_wakeup(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int val);
809 int snd_pcm_hw_params_get_period_wakeup(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val);
810
811 int snd_pcm_hw_params_get_period_time(const snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
812 int snd_pcm_hw_params_get_period_time_min(const snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
813 int snd_pcm_hw_params_get_period_time_max(const snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
814 int snd_pcm_hw_params_test_period_time(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int val, int dir);
815 int snd_pcm_hw_params_set_period_time(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int val, int dir);
816 int snd_pcm_hw_params_set_period_time_min(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
817 int snd_pcm_hw_params_set_period_time_max(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
818 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);
819 int snd_pcm_hw_params_set_period_time_near(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
820 int snd_pcm_hw_params_set_period_time_first(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
821 int snd_pcm_hw_params_set_period_time_last(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
822
823 int snd_pcm_hw_params_get_period_size(const snd_pcm_hw_params_t *params, snd_pcm_uframes_t *frames, int *dir);
824 int snd_pcm_hw_params_get_period_size_min(const snd_pcm_hw_params_t *params, snd_pcm_uframes_t *frames, int *dir);
825 int snd_pcm_hw_params_get_period_size_max(const snd_pcm_hw_params_t *params, snd_pcm_uframes_t *frames, int *dir);
826 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);
827 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);
828 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);
829 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);
830 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);
831 int 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);
832 int 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);
833 int 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);
834 int snd_pcm_hw_params_set_period_size_integer(snd_pcm_t *pcm, snd_pcm_hw_params_t *params);
835
836 int snd_pcm_hw_params_get_periods(const snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
837 int snd_pcm_hw_params_get_periods_min(const snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
838 int snd_pcm_hw_params_get_periods_max(const snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
839 int snd_pcm_hw_params_test_periods(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int val, int dir);
840 int snd_pcm_hw_params_set_periods(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int val, int dir);
841 int snd_pcm_hw_params_set_periods_min(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
842 int snd_pcm_hw_params_set_periods_max(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
843 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);
844 int snd_pcm_hw_params_set_periods_near(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
845 int snd_pcm_hw_params_set_periods_first(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
846 int snd_pcm_hw_params_set_periods_last(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
847 int snd_pcm_hw_params_set_periods_integer(snd_pcm_t *pcm, snd_pcm_hw_params_t *params);
848
849 int snd_pcm_hw_params_get_buffer_time(const snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
850 int snd_pcm_hw_params_get_buffer_time_min(const snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
851 int snd_pcm_hw_params_get_buffer_time_max(const snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
852 int snd_pcm_hw_params_test_buffer_time(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int val, int dir);
853 int snd_pcm_hw_params_set_buffer_time(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int val, int dir);
854 int snd_pcm_hw_params_set_buffer_time_min(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
855 int snd_pcm_hw_params_set_buffer_time_max(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
856 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);
857 int snd_pcm_hw_params_set_buffer_time_near(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
858 int snd_pcm_hw_params_set_buffer_time_first(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
859 int snd_pcm_hw_params_set_buffer_time_last(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
860
861 int snd_pcm_hw_params_get_buffer_size(const snd_pcm_hw_params_t *params, snd_pcm_uframes_t *val);
862 int snd_pcm_hw_params_get_buffer_size_min(const snd_pcm_hw_params_t *params, snd_pcm_uframes_t *val);
863 int snd_pcm_hw_params_get_buffer_size_max(const snd_pcm_hw_params_t *params, snd_pcm_uframes_t *val);
864 int snd_pcm_hw_params_test_buffer_size(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_uframes_t val);
865 int snd_pcm_hw_params_set_buffer_size(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_uframes_t val);
866 int snd_pcm_hw_params_set_buffer_size_min(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_uframes_t *val);
867 int snd_pcm_hw_params_set_buffer_size_max(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_uframes_t *val);
868 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);
869 int snd_pcm_hw_params_set_buffer_size_near(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_uframes_t *val);
870 int snd_pcm_hw_params_set_buffer_size_first(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_uframes_t *val);
871 int snd_pcm_hw_params_set_buffer_size_last(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_uframes_t *val);
872
873 #endif /* !ALSA_LIBRARY_BUILD && !ALSA_PCM_OLD_HW_PARAMS_API */
874
875 int snd_pcm_hw_params_get_min_align(const snd_pcm_hw_params_t *params, snd_pcm_uframes_t *val);
876
886 size_t snd_pcm_sw_params_sizeof(void);
891 #define snd_pcm_sw_params_alloca(ptr) __snd_alloca(ptr, snd_pcm_sw_params)
892 int snd_pcm_sw_params_malloc(snd_pcm_sw_params_t **ptr);
893 void snd_pcm_sw_params_free(snd_pcm_sw_params_t *obj);
894 void snd_pcm_sw_params_copy(snd_pcm_sw_params_t *dst, const snd_pcm_sw_params_t *src);
895 int snd_pcm_sw_params_get_boundary(const snd_pcm_sw_params_t *params, snd_pcm_uframes_t *val);
896
897 #if !defined(ALSA_LIBRARY_BUILD) && !defined(ALSA_PCM_OLD_SW_PARAMS_API)
898
899 int snd_pcm_sw_params_set_tstamp_mode(snd_pcm_t *pcm, snd_pcm_sw_params_t *params, snd_pcm_tstamp_t val);
900 int snd_pcm_sw_params_get_tstamp_mode(const snd_pcm_sw_params_t *params, snd_pcm_tstamp_t *val);
901 int snd_pcm_sw_params_set_tstamp_type(snd_pcm_t *pcm, snd_pcm_sw_params_t *params, snd_pcm_tstamp_type_t val);
902 int snd_pcm_sw_params_get_tstamp_type(const snd_pcm_sw_params_t *params, snd_pcm_tstamp_type_t *val);
903 int snd_pcm_sw_params_set_avail_min(snd_pcm_t *pcm, snd_pcm_sw_params_t *params, snd_pcm_uframes_t val);
904 int snd_pcm_sw_params_get_avail_min(const snd_pcm_sw_params_t *params, snd_pcm_uframes_t *val);
905 int snd_pcm_sw_params_set_period_event(snd_pcm_t *pcm, snd_pcm_sw_params_t *params, int val);
906 int snd_pcm_sw_params_get_period_event(const snd_pcm_sw_params_t *params, int *val);
907 int snd_pcm_sw_params_set_start_threshold(snd_pcm_t *pcm, snd_pcm_sw_params_t *params, snd_pcm_uframes_t val);
908 int snd_pcm_sw_params_get_start_threshold(const snd_pcm_sw_params_t *paramsm, snd_pcm_uframes_t *val);
909 int snd_pcm_sw_params_set_stop_threshold(snd_pcm_t *pcm, snd_pcm_sw_params_t *params, snd_pcm_uframes_t val);
910 int snd_pcm_sw_params_get_stop_threshold(const snd_pcm_sw_params_t *params, snd_pcm_uframes_t *val);
911 int snd_pcm_sw_params_set_silence_threshold(snd_pcm_t *pcm, snd_pcm_sw_params_t *params, snd_pcm_uframes_t val);
912 int snd_pcm_sw_params_get_silence_threshold(const snd_pcm_sw_params_t *params, snd_pcm_uframes_t *val);
913 int snd_pcm_sw_params_set_silence_size(snd_pcm_t *pcm, snd_pcm_sw_params_t *params, snd_pcm_uframes_t val);
914 int snd_pcm_sw_params_get_silence_size(const snd_pcm_sw_params_t *params, snd_pcm_uframes_t *val);
915
916 #endif /* !ALSA_LIBRARY_BUILD && !ALSA_PCM_OLD_SW_PARAMS_API */
917
920 /* include old API */
921 #ifndef ALSA_LIBRARY_BUILD
922 #if defined(ALSA_PCM_OLD_HW_PARAMS_API) || defined(ALSA_PCM_OLD_SW_PARAMS_API)
923 #include "pcm_old.h"
924 #endif
925 #endif
926
934 size_t snd_pcm_access_mask_sizeof(void);
939 #define snd_pcm_access_mask_alloca(ptr) __snd_alloca(ptr, snd_pcm_access_mask)
940 int snd_pcm_access_mask_malloc(snd_pcm_access_mask_t **ptr);
941 void snd_pcm_access_mask_free(snd_pcm_access_mask_t *obj);
942 void snd_pcm_access_mask_copy(snd_pcm_access_mask_t *dst, const snd_pcm_access_mask_t *src);
943 void snd_pcm_access_mask_none(snd_pcm_access_mask_t *mask);
944 void snd_pcm_access_mask_any(snd_pcm_access_mask_t *mask);
945 int snd_pcm_access_mask_test(const snd_pcm_access_mask_t *mask, snd_pcm_access_t val);
946 int snd_pcm_access_mask_empty(const snd_pcm_access_mask_t *mask);
947 void snd_pcm_access_mask_set(snd_pcm_access_mask_t *mask, snd_pcm_access_t val);
948 void snd_pcm_access_mask_reset(snd_pcm_access_mask_t *mask, snd_pcm_access_t val);
949
959 size_t snd_pcm_format_mask_sizeof(void);
964 #define snd_pcm_format_mask_alloca(ptr) __snd_alloca(ptr, snd_pcm_format_mask)
965 int snd_pcm_format_mask_malloc(snd_pcm_format_mask_t **ptr);
966 void snd_pcm_format_mask_free(snd_pcm_format_mask_t *obj);
967 void snd_pcm_format_mask_copy(snd_pcm_format_mask_t *dst, const snd_pcm_format_mask_t *src);
968 void snd_pcm_format_mask_none(snd_pcm_format_mask_t *mask);
969 void snd_pcm_format_mask_any(snd_pcm_format_mask_t *mask);
970 int snd_pcm_format_mask_test(const snd_pcm_format_mask_t *mask, snd_pcm_format_t val);
971 int snd_pcm_format_mask_empty(const snd_pcm_format_mask_t *mask);
972 void snd_pcm_format_mask_set(snd_pcm_format_mask_t *mask, snd_pcm_format_t val);
973 void snd_pcm_format_mask_reset(snd_pcm_format_mask_t *mask, snd_pcm_format_t val);
974
984 size_t snd_pcm_subformat_mask_sizeof(void);
989 #define snd_pcm_subformat_mask_alloca(ptr) __snd_alloca(ptr, snd_pcm_subformat_mask)
990 int snd_pcm_subformat_mask_malloc(snd_pcm_subformat_mask_t **ptr);
991 void snd_pcm_subformat_mask_free(snd_pcm_subformat_mask_t *obj);
992 void snd_pcm_subformat_mask_copy(snd_pcm_subformat_mask_t *dst, const snd_pcm_subformat_mask_t *src);
993 void snd_pcm_subformat_mask_none(snd_pcm_subformat_mask_t *mask);
994 void snd_pcm_subformat_mask_any(snd_pcm_subformat_mask_t *mask);
995 int snd_pcm_subformat_mask_test(const snd_pcm_subformat_mask_t *mask, snd_pcm_subformat_t val);
996 int snd_pcm_subformat_mask_empty(const snd_pcm_subformat_mask_t *mask);
997 void snd_pcm_subformat_mask_set(snd_pcm_subformat_mask_t *mask, snd_pcm_subformat_t val);
998 void snd_pcm_subformat_mask_reset(snd_pcm_subformat_mask_t *mask, snd_pcm_subformat_t val);
999
1009 size_t snd_pcm_status_sizeof(void);
1014 #define snd_pcm_status_alloca(ptr) __snd_alloca(ptr, snd_pcm_status)
1015 int snd_pcm_status_malloc(snd_pcm_status_t **ptr);
1016 void snd_pcm_status_free(snd_pcm_status_t *obj);
1017 void snd_pcm_status_copy(snd_pcm_status_t *dst, const snd_pcm_status_t *src);
1018 snd_pcm_state_t snd_pcm_status_get_state(const snd_pcm_status_t *obj);
1019 void snd_pcm_status_get_trigger_tstamp(const snd_pcm_status_t *obj, snd_timestamp_t *ptr);
1020 void snd_pcm_status_get_trigger_htstamp(const snd_pcm_status_t *obj, snd_htimestamp_t *ptr);
1021 void snd_pcm_status_get_tstamp(const snd_pcm_status_t *obj, snd_timestamp_t *ptr);
1022 void snd_pcm_status_get_htstamp(const snd_pcm_status_t *obj, snd_htimestamp_t *ptr);
1023 void snd_pcm_status_get_audio_htstamp(const snd_pcm_status_t *obj, snd_htimestamp_t *ptr);
1024 void snd_pcm_status_get_driver_htstamp(const snd_pcm_status_t *obj, snd_htimestamp_t *ptr);
1025 void snd_pcm_status_get_audio_htstamp_report(const snd_pcm_status_t *obj,
1026 snd_pcm_audio_tstamp_report_t *audio_tstamp_report);
1027 void snd_pcm_status_set_audio_htstamp_config(snd_pcm_status_t *obj,
1028 snd_pcm_audio_tstamp_config_t *audio_tstamp_config);
1029
1030 static inline void snd_pcm_pack_audio_tstamp_config(unsigned int *data,
1031 snd_pcm_audio_tstamp_config_t *config)
1032 {
1033 *data = config->report_delay;
1034 *data <<= 4;
1035 *data |= config->type_requested;
1036 }
1037
1038 static inline void snd_pcm_unpack_audio_tstamp_report(unsigned int data, unsigned int accuracy,
1039 snd_pcm_audio_tstamp_report_t *report)
1040 {
1041 data >>= 16;
1042 report->valid = data & 1;
1043 report->actual_type = (data >> 1) & 0xF;
1044 report->accuracy_report = (data >> 5) & 1;
1045 report->accuracy = accuracy;
1046 }
1047
1048 snd_pcm_sframes_t snd_pcm_status_get_delay(const snd_pcm_status_t *obj);
1049 snd_pcm_uframes_t snd_pcm_status_get_avail(const snd_pcm_status_t *obj);
1050 snd_pcm_uframes_t snd_pcm_status_get_avail_max(const snd_pcm_status_t *obj);
1051 snd_pcm_uframes_t snd_pcm_status_get_overrange(const snd_pcm_status_t *obj);
1052
1062 const char *snd_pcm_type_name(snd_pcm_type_t type);
1063 const char *snd_pcm_stream_name(const snd_pcm_stream_t stream);
1064 const char *snd_pcm_access_name(const snd_pcm_access_t _access);
1065 const char *snd_pcm_format_name(const snd_pcm_format_t format);
1066 const char *snd_pcm_format_description(const snd_pcm_format_t format);
1067 const char *snd_pcm_subformat_name(const snd_pcm_subformat_t subformat);
1068 const char *snd_pcm_subformat_description(const snd_pcm_subformat_t subformat);
1069 snd_pcm_format_t snd_pcm_format_value(const char* name);
1070 const char *snd_pcm_tstamp_mode_name(const snd_pcm_tstamp_t mode);
1071 const char *snd_pcm_state_name(const snd_pcm_state_t state);
1072
1082 int snd_pcm_dump(snd_pcm_t *pcm, snd_output_t *out);
1083 int snd_pcm_dump_hw_setup(snd_pcm_t *pcm, snd_output_t *out);
1084 int snd_pcm_dump_sw_setup(snd_pcm_t *pcm, snd_output_t *out);
1085 int snd_pcm_dump_setup(snd_pcm_t *pcm, snd_output_t *out);
1086 int snd_pcm_hw_params_dump(snd_pcm_hw_params_t *params, snd_output_t *out);
1087 int snd_pcm_sw_params_dump(snd_pcm_sw_params_t *params, snd_output_t *out);
1088 int snd_pcm_status_dump(snd_pcm_status_t *status, snd_output_t *out);
1089
1099 int snd_pcm_mmap_begin(snd_pcm_t *pcm,
1100 const snd_pcm_channel_area_t **areas,
1101 snd_pcm_uframes_t *offset,
1102 snd_pcm_uframes_t *frames);
1103 snd_pcm_sframes_t snd_pcm_mmap_commit(snd_pcm_t *pcm,
1104 snd_pcm_uframes_t offset,
1105 snd_pcm_uframes_t frames);
1106 snd_pcm_sframes_t snd_pcm_mmap_writei(snd_pcm_t *pcm, const void *buffer, snd_pcm_uframes_t size);
1107 snd_pcm_sframes_t snd_pcm_mmap_readi(snd_pcm_t *pcm, void *buffer, snd_pcm_uframes_t size);
1108 snd_pcm_sframes_t snd_pcm_mmap_writen(snd_pcm_t *pcm, void **bufs, snd_pcm_uframes_t size);
1109 snd_pcm_sframes_t snd_pcm_mmap_readn(snd_pcm_t *pcm, void **bufs, snd_pcm_uframes_t size);
1110
1120 int snd_pcm_format_signed(snd_pcm_format_t format);
1121 int snd_pcm_format_unsigned(snd_pcm_format_t format);
1122 int snd_pcm_format_linear(snd_pcm_format_t format);
1123 int snd_pcm_format_float(snd_pcm_format_t format);
1124 int snd_pcm_format_little_endian(snd_pcm_format_t format);
1125 int snd_pcm_format_big_endian(snd_pcm_format_t format);
1126 int snd_pcm_format_cpu_endian(snd_pcm_format_t format);
1127 int snd_pcm_format_width(snd_pcm_format_t format); /* in bits */
1128 int snd_pcm_format_physical_width(snd_pcm_format_t format); /* in bits */
1129 snd_pcm_format_t snd_pcm_build_linear_format(int width, int pwidth, int unsignd, int big_endian);
1130 ssize_t snd_pcm_format_size(snd_pcm_format_t format, size_t samples);
1131 uint8_t snd_pcm_format_silence(snd_pcm_format_t format);
1132 uint16_t snd_pcm_format_silence_16(snd_pcm_format_t format);
1133 uint32_t snd_pcm_format_silence_32(snd_pcm_format_t format);
1134 uint64_t snd_pcm_format_silence_64(snd_pcm_format_t format);
1135 int snd_pcm_format_set_silence(snd_pcm_format_t format, void *buf, unsigned int samples);
1136
1137 snd_pcm_sframes_t snd_pcm_bytes_to_frames(snd_pcm_t *pcm, ssize_t bytes);
1138 ssize_t snd_pcm_frames_to_bytes(snd_pcm_t *pcm, snd_pcm_sframes_t frames);
1139 long snd_pcm_bytes_to_samples(snd_pcm_t *pcm, ssize_t bytes);
1140 ssize_t snd_pcm_samples_to_bytes(snd_pcm_t *pcm, long samples);
1141
1142 int snd_pcm_area_silence(const snd_pcm_channel_area_t *dst_channel, snd_pcm_uframes_t dst_offset,
1143 unsigned int samples, snd_pcm_format_t format);
1144 int snd_pcm_areas_silence(const snd_pcm_channel_area_t *dst_channels, snd_pcm_uframes_t dst_offset,
1145 unsigned int channels, snd_pcm_uframes_t frames, snd_pcm_format_t format);
1146 int snd_pcm_area_copy(const snd_pcm_channel_area_t *dst_channel, snd_pcm_uframes_t dst_offset,
1147 const snd_pcm_channel_area_t *src_channel, snd_pcm_uframes_t src_offset,
1148 unsigned int samples, snd_pcm_format_t format);
1149 int snd_pcm_areas_copy(const snd_pcm_channel_area_t *dst_channels, snd_pcm_uframes_t dst_offset,
1150 const snd_pcm_channel_area_t *src_channels, snd_pcm_uframes_t src_offset,
1151 unsigned int channels, snd_pcm_uframes_t frames, snd_pcm_format_t format);
1152 int snd_pcm_areas_copy_wrap(const snd_pcm_channel_area_t *dst_channels,
1153 snd_pcm_uframes_t dst_offset,
1154 const snd_pcm_uframes_t dst_size,
1155 const snd_pcm_channel_area_t *src_channels,
1156 snd_pcm_uframes_t src_offset,
1157 const snd_pcm_uframes_t src_size,
1158 const unsigned int channels,
1159 snd_pcm_uframes_t frames,
1160 const snd_pcm_format_t format);
1161
1172 typedef enum _snd_pcm_hook_type {
1173 SND_PCM_HOOK_TYPE_HW_PARAMS = 0,
1174 SND_PCM_HOOK_TYPE_HW_FREE,
1175 SND_PCM_HOOK_TYPE_CLOSE,
1176 SND_PCM_HOOK_TYPE_LAST = SND_PCM_HOOK_TYPE_CLOSE
1177 } snd_pcm_hook_type_t;
1178
1180 typedef struct _snd_pcm_hook snd_pcm_hook_t;
1182 typedef int (*snd_pcm_hook_func_t)(snd_pcm_hook_t *hook);
1183 snd_pcm_t *snd_pcm_hook_get_pcm(snd_pcm_hook_t *hook);
1184 void *snd_pcm_hook_get_private(snd_pcm_hook_t *hook);
1185 void snd_pcm_hook_set_private(snd_pcm_hook_t *hook, void *private_data);
1186 int snd_pcm_hook_add(snd_pcm_hook_t **hookp, snd_pcm_t *pcm,
1187 snd_pcm_hook_type_t type,
1188 snd_pcm_hook_func_t func, void *private_data);
1189 int snd_pcm_hook_remove(snd_pcm_hook_t *hook);
1190
1201 typedef struct _snd_pcm_scope_ops {
1205 int (*enable)(snd_pcm_scope_t *scope);
1209 void (*disable)(snd_pcm_scope_t *scope);
1213 void (*start)(snd_pcm_scope_t *scope);
1217 void (*stop)(snd_pcm_scope_t *scope);
1221 void (*update)(snd_pcm_scope_t *scope);
1225 void (*reset)(snd_pcm_scope_t *scope);
1229 void (*close)(snd_pcm_scope_t *scope);
1230 } snd_pcm_scope_ops_t;
1231
1232 snd_pcm_uframes_t snd_pcm_meter_get_bufsize(snd_pcm_t *pcm);
1233 unsigned int snd_pcm_meter_get_channels(snd_pcm_t *pcm);
1234 unsigned int snd_pcm_meter_get_rate(snd_pcm_t *pcm);
1235 snd_pcm_uframes_t snd_pcm_meter_get_now(snd_pcm_t *pcm);
1236 snd_pcm_uframes_t snd_pcm_meter_get_boundary(snd_pcm_t *pcm);
1237 int snd_pcm_meter_add_scope(snd_pcm_t *pcm, snd_pcm_scope_t *scope);
1238 snd_pcm_scope_t *snd_pcm_meter_search_scope(snd_pcm_t *pcm, const char *name);
1239 int snd_pcm_scope_malloc(snd_pcm_scope_t **ptr);
1240 void snd_pcm_scope_set_ops(snd_pcm_scope_t *scope,
1241 const snd_pcm_scope_ops_t *val);
1242 void snd_pcm_scope_set_name(snd_pcm_scope_t *scope, const char *val);
1243 const char *snd_pcm_scope_get_name(snd_pcm_scope_t *scope);
1244 void *snd_pcm_scope_get_callback_private(snd_pcm_scope_t *scope);
1245 void snd_pcm_scope_set_callback_private(snd_pcm_scope_t *scope, void *val);
1246 int snd_pcm_scope_s16_open(snd_pcm_t *pcm, const char *name,
1247 snd_pcm_scope_t **scopep);
1248 int16_t *snd_pcm_scope_s16_get_channel_buffer(snd_pcm_scope_t *scope,
1249 unsigned int channel);
1250
1261 typedef enum _snd_spcm_latency {
1264 SND_SPCM_LATENCY_STANDARD = 0,
1267 SND_SPCM_LATENCY_MEDIUM,
1270 SND_SPCM_LATENCY_REALTIME
1271 } snd_spcm_latency_t;
1272
1274 typedef enum _snd_spcm_xrun_type {
1276 SND_SPCM_XRUN_IGNORE = 0,
1278 SND_SPCM_XRUN_STOP
1279 } snd_spcm_xrun_type_t;
1280
1282 typedef enum _snd_spcm_duplex_type {
1284 SND_SPCM_DUPLEX_LIBERAL = 0,
1286 SND_SPCM_DUPLEX_PEDANTIC
1287 } snd_spcm_duplex_type_t;
1288
1289 int snd_spcm_init(snd_pcm_t *pcm,
1290 unsigned int rate,
1291 unsigned int channels,
1292 snd_pcm_format_t format,
1293 snd_pcm_subformat_t subformat,
1294 snd_spcm_latency_t latency,
1295 snd_pcm_access_t _access,
1296 snd_spcm_xrun_type_t xrun_type);
1297
1298 int snd_spcm_init_duplex(snd_pcm_t *playback_pcm,
1299 snd_pcm_t *capture_pcm,
1300 unsigned int rate,
1301 unsigned int channels,
1302 snd_pcm_format_t format,
1303 snd_pcm_subformat_t subformat,
1304 snd_spcm_latency_t latency,
1305 snd_pcm_access_t _access,
1306 snd_spcm_xrun_type_t xrun_type,
1307 snd_spcm_duplex_type_t duplex_type);
1308
1309 int snd_spcm_init_get_params(snd_pcm_t *pcm,
1310 unsigned int *rate,
1311 snd_pcm_uframes_t *buffer_size,
1312 snd_pcm_uframes_t *period_size);
1313
1323 /* Deprecated functions, for compatibility */
1324 const char *snd_pcm_start_mode_name(snd_pcm_start_t mode) __attribute__((deprecated));
1325 const char *snd_pcm_xrun_mode_name(snd_pcm_xrun_t mode) __attribute__((deprecated));
1326 int snd_pcm_sw_params_set_start_mode(snd_pcm_t *pcm, snd_pcm_sw_params_t *params, snd_pcm_start_t val) __attribute__((deprecated));
1327 snd_pcm_start_t snd_pcm_sw_params_get_start_mode(const snd_pcm_sw_params_t *params) __attribute__((deprecated));
1328 int snd_pcm_sw_params_set_xrun_mode(snd_pcm_t *pcm, snd_pcm_sw_params_t *params, snd_pcm_xrun_t val) __attribute__((deprecated));
1329 snd_pcm_xrun_t snd_pcm_sw_params_get_xrun_mode(const snd_pcm_sw_params_t *params) __attribute__((deprecated));
1330 #if !defined(ALSA_LIBRARY_BUILD) && !defined(ALSA_PCM_OLD_SW_PARAMS_API)
1331 int snd_pcm_sw_params_set_xfer_align(snd_pcm_t *pcm, snd_pcm_sw_params_t *params, snd_pcm_uframes_t val) __attribute__((deprecated));
1332 int snd_pcm_sw_params_get_xfer_align(const snd_pcm_sw_params_t *params, snd_pcm_uframes_t *val) __attribute__((deprecated));
1333 int snd_pcm_sw_params_set_sleep_min(snd_pcm_t *pcm, snd_pcm_sw_params_t *params, unsigned int val) __attribute__((deprecated));
1334 int snd_pcm_sw_params_get_sleep_min(const snd_pcm_sw_params_t *params, unsigned int *val) __attribute__((deprecated));
1335 #endif /* !ALSA_LIBRARY_BUILD && !ALSA_PCM_OLD_SW_PARAMS_API */
1336 #if !defined(ALSA_LIBRARY_BUILD) && !defined(ALSA_PCM_OLD_HW_PARAMS_API)
1337 int snd_pcm_hw_params_get_tick_time(const snd_pcm_hw_params_t *params, unsigned int *val, int *dir) __attribute__((deprecated));
1338 int snd_pcm_hw_params_get_tick_time_min(const snd_pcm_hw_params_t *params, unsigned int *val, int *dir) __attribute__((deprecated));
1339 int snd_pcm_hw_params_get_tick_time_max(const snd_pcm_hw_params_t *params, unsigned int *val, int *dir) __attribute__((deprecated));
1340 int snd_pcm_hw_params_test_tick_time(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int val, int dir) __attribute__((deprecated));
1341 int snd_pcm_hw_params_set_tick_time(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int val, int dir) __attribute__((deprecated));
1342 int snd_pcm_hw_params_set_tick_time_min(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir) __attribute__((deprecated));
1343 int snd_pcm_hw_params_set_tick_time_max(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir) __attribute__((deprecated));
1344 int snd_pcm_hw_params_set_tick_time_minmax(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *min, int *mindir, unsigned int *max, int *maxdir) __attribute__((deprecated));
1345 int snd_pcm_hw_params_set_tick_time_near(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir) __attribute__((deprecated));
1346 int snd_pcm_hw_params_set_tick_time_first(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir) __attribute__((deprecated));
1347 int snd_pcm_hw_params_set_tick_time_last(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir) __attribute__((deprecated));
1348 #endif /* !ALSA_LIBRARY_BUILD && !ALSA_PCM_OLD_HW_PARAMS_API */
1349
1352 #ifdef __cplusplus
1353 }
1354 #endif
1355
1356 #endif /* __ALSA_PCM_H */
SND_PCM_TSTAMP_ENABLE
Definition: pcm.h:338
snd_pcm_sw_params_get_avail_min
int snd_pcm_sw_params_get_avail_min(const snd_pcm_sw_params_t *params, snd_pcm_uframes_t *val)
Get avail min from a software configuration container.
Definition: pcm.c:6405
snd_pcm_sw_params_get_boundary
int snd_pcm_sw_params_get_boundary(const snd_pcm_sw_params_t *params, snd_pcm_uframes_t *val)
Get boundary for ring pointers from a software configuration container.
Definition: pcm.c:6164
snd_pcm_hw_params_set_buffer_size_last
int snd_pcm_hw_params_set_buffer_size_last(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_uframes_t *val)
Restrict a configuration space to contain only its maximum buffer size.
Definition: pcm.c:5831
snd_pcm_hw_params_get_buffer_size
int snd_pcm_hw_params_get_buffer_size(const snd_pcm_hw_params_t *params, snd_pcm_uframes_t *val)
Extract buffer size from a configuration space.
Definition: pcm.c:5653
snd_pcm_hwsync
int snd_pcm_hwsync(snd_pcm_t *pcm)
(DEPRECATED) Synchronize stream position with hardware
Definition: pcm.c:1042
snd_pcm_sw_params_t
struct _snd_pcm_sw_params snd_pcm_sw_params_t
Definition: pcm.h:67
snd_pcm_hw_params_get_subformat_mask
void snd_pcm_hw_params_get_subformat_mask(snd_pcm_hw_params_t *params, snd_pcm_subformat_mask_t *mask)
Get subformat mask from a configuration space.
Definition: pcm.c:4366
snd_pcm_hook_set_private
void snd_pcm_hook_set_private(snd_pcm_hook_t *hook, void *private_data)
Set callback function private data for a PCM hook.
Definition: pcm_hooks.c:582
snd_spcm_init_get_params
int snd_spcm_init_get_params(snd_pcm_t *pcm, unsigned int *rate, snd_pcm_uframes_t *buffer_size, snd_pcm_uframes_t *period_size)
Get the set up of simple PCM.
Definition: pcm_simple.c:284
SND_PCM_FORMAT_FLOAT64_LE
Definition: pcm.h:161
snd_pcm_access_mask_empty
int snd_pcm_access_mask_empty(const snd_pcm_access_mask_t *mask)
test, if given a snd_pcm_access_mask_t is empty
Definition: pcm.c:3808
SND_PCM_TYPE_ROUTE
Definition: pcm.h:426
snd_pcm_set_chmap
int snd_pcm_set_chmap(snd_pcm_t *pcm, const snd_pcm_chmap_t *map)
Definition: pcm.c:8004
snd_pcm_xrun_t
snd_pcm_xrun_t
Definition: pcm.h:325
snd_pcm_sw_params_dump
int snd_pcm_sw_params_dump(snd_pcm_sw_params_t *params, snd_output_t *out)
Dump a software configuration.
Definition: pcm.c:6101
snd_pcm_hw_params_set_buffer_time_first
int snd_pcm_hw_params_set_buffer_time_first(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir)
Restrict a configuration space to contain only its minimum buffer time.
Definition: pcm.c:5618
snd_pcm_sw_params_get_xfer_align
int snd_pcm_sw_params_get_xfer_align(const snd_pcm_sw_params_t *params, snd_pcm_uframes_t *val) __attribute__((deprecated))
(DEPRECATED) Get xfer align from a software configuration container
Definition: pcm.c:6467
snd_pcm_format_float
int snd_pcm_format_float(snd_pcm_format_t format)
Return float info for a PCM sample format.
Definition: pcm_misc.c:110
snd_pcm_info
int snd_pcm_info(snd_pcm_t *pcm, snd_pcm_info_t *info)
Obtain general (static) information for PCM handle.
Definition: pcm.c:841
snd_pcm_hw_params_get_period_size_min
int snd_pcm_hw_params_get_period_size_min(const snd_pcm_hw_params_t *params, snd_pcm_uframes_t *frames, int *dir)
Extract minimum period size from a configuration space.
Definition: pcm.c:5052
snd_pcm_hw_params_test_subformat
int snd_pcm_hw_params_test_subformat(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_subformat_t subformat)
Verify if a subformat is available inside a configuration space for a PCM.
Definition: pcm.c:4300
snd_pcm_hw_params_get_tick_time_min
int snd_pcm_hw_params_get_tick_time_min(const snd_pcm_hw_params_t *params, unsigned int *val, int *dir) __attribute__((deprecated))
(DEPRECATED) Extract minimum tick time from a configuration space
Definition: pcm.c:5873
snd_pcm_format_silence_64
uint64_t snd_pcm_format_silence_64(snd_pcm_format_t format)
Return 64 bit expressing silence for a PCM sample format.
Definition: pcm_misc.c:410
snd_pcm_hw_params_get_rate_resample
int snd_pcm_hw_params_get_rate_resample(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val)
Extract resample state from a configuration space.
Definition: pcm.c:4740
snd_pcm_hw_params_set_rate_first
int snd_pcm_hw_params_set_rate_first(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir)
Restrict a configuration space to contain only its minimum rate.
Definition: pcm.c:4690
snd_pcm_sw_params_get_start_mode
snd_pcm_start_t snd_pcm_sw_params_get_start_mode(const snd_pcm_sw_params_t *params) __attribute__((deprecated))
(DEPRECATED) Get start mode from a software configuration container
Definition: pcm.c:6204
snd_pcm_hw_params_get_periods_min
int snd_pcm_hw_params_get_periods_min(const snd_pcm_hw_params_t *params, unsigned int *val, int *dir)
Extract minimum periods count from a configuration space.
Definition: pcm.c:5285
SND_PCM_ACCESS_MMAP_NONINTERLEAVED
Definition: pcm.h:114
SND_CHMAP_BLC
Definition: pcm.h:594
snd_pcm_chmap_query_t::map
snd_pcm_chmap_t map
Definition: pcm.h:616
SND_PCM_SUBFORMAT_STD
Definition: pcm.h:286
snd_pcm_hw_params_get_period_wakeup
int snd_pcm_hw_params_get_period_wakeup(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val)
Extract period wakeup flag from a configuration space.
Definition: pcm.c:4823
snd_pcm_hw_params_get_export_buffer
int snd_pcm_hw_params_get_export_buffer(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val)
Extract buffer accessibility from a configuration space.
Definition: pcm.c:4772
snd_pcm_start_mode_name
const char * snd_pcm_start_mode_name(snd_pcm_start_t mode) __attribute__((deprecated))
(DEPRECATED) get name of PCM start mode setting
Definition: pcm.c:2100
snd_pcm_info_sizeof
size_t snd_pcm_info_sizeof(void)
get size of snd_pcm_info_t
Definition: pcm.c:6882
snd_pcm_hw_params_test_tick_time
int snd_pcm_hw_params_test_tick_time(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int val, int dir) __attribute__((deprecated))
(DEPRECATED) Verify if a tick time is available inside a configuration space for a PCM ...
Definition: pcm.c:5909
SND_PCM_FORMAT_UNKNOWN
Definition: pcm.h:127
snd_pcm_hw_params_get_periods
int snd_pcm_hw_params_get_periods(const snd_pcm_hw_params_t *params, unsigned int *val, int *dir)
Extract periods from a configuration space.
Definition: pcm.c:5267
SND_PCM_TYPE_LINEAR_FLOAT
Definition: pcm.h:440
SND_CHMAP_FR
Definition: pcm.h:563
snd_pcm_chmap_query_t
Definition: pcm.h:614
snd_pcm_subformat_mask_t
struct _snd_pcm_subformat_mask snd_pcm_subformat_mask_t
Definition: pcm.h:75
snd_pcm_scope_s16_get_channel_buffer
int16_t * snd_pcm_scope_s16_get_channel_buffer(snd_pcm_scope_t *scope, unsigned int channel)
Get s16 pseudo scope frames buffer for a channel.
Definition: pcm_meter.c:1207
SND_PCM_ACCESS_MMAP_INTERLEAVED
Definition: pcm.h:112
SND_PCM_FORMAT_U24_BE
Definition: pcm.h:147
SND_CHMAP_FRH
Definition: pcm.h:579
snd_pcm_hw_params_set_buffer_size_minmax
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)
Restrict a configuration space to have buffer sizes in a given range.
Definition: pcm.c:5771
snd_pcm_state_t
snd_pcm_state_t
Definition: pcm.h:291
snd_pcm_status_malloc
int snd_pcm_status_malloc(snd_pcm_status_t **ptr)
allocate an invalid snd_pcm_status_t using standard malloc
Definition: pcm.c:6679
snd_pcm_hw_params_set_periods_min
int snd_pcm_hw_params_set_periods_min(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir)
Restrict a configuration space with a minimum periods count.
Definition: pcm.c:5349
snd_pcm_status_get_trigger_htstamp
void snd_pcm_status_get_trigger_htstamp(const snd_pcm_status_t *obj, snd_htimestamp_t *ptr)
Get trigger hi-res timestamp from a PCM status container.
Definition: pcm.c:6747
SND_SPCM_XRUN_STOP
Definition: pcm.h:1278
snd_pcm_hw_params_test_buffer_time
int snd_pcm_hw_params_test_buffer_time(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int val, int dir)
Verify if a buffer time is available inside a configuration space for a PCM.
Definition: pcm.c:5519
snd_pcm_class_t
snd_pcm_class_t
Definition: pcm.h:78
SND_PCM_TYPE_EXTPLUG
Definition: pcm.h:458
snd_pcm_meter_get_channels
unsigned int snd_pcm_meter_get_channels(snd_pcm_t *pcm)
Get meter channels from a SND_PCM_TYPE_METER PCM.
Definition: pcm_meter.c:893
snd_pcm_hw_params_set_buffer_size_near
int snd_pcm_hw_params_set_buffer_size_near(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_uframes_t *val)
Restrict a configuration space to have buffer size nearest to a target.
Definition: pcm.c:5791
snd_pcm_hw_params_set_channels_max
int snd_pcm_hw_params_set_channels_max(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val)
Restrict a configuration space with a maximum channels count.
Definition: pcm.c:4460
snd_pcm_areas_copy
int snd_pcm_areas_copy(const snd_pcm_channel_area_t *dst_channels, snd_pcm_uframes_t dst_offset, const snd_pcm_channel_area_t *src_channels, snd_pcm_uframes_t src_offset, unsigned int channels, snd_pcm_uframes_t frames, snd_pcm_format_t format)
Copy one or more areas.
Definition: pcm.c:3229
snd_pcm_format_mask_sizeof
size_t snd_pcm_format_mask_sizeof(void)
get size of snd_pcm_format_mask_t
Definition: pcm.c:3837
snd_pcm_drop
int snd_pcm_drop(snd_pcm_t *pcm)
Stop a PCM dropping pending frames.
Definition: pcm.c:1244
SND_CHMAP_NA
Definition: pcm.h:560
snd_pcm_status
int snd_pcm_status(snd_pcm_t *pcm, snd_pcm_status_t *status)
Obtain status (runtime) information for PCM handle.
Definition: pcm.c:998
snd_pcm_poll_descriptors_count
int snd_pcm_poll_descriptors_count(snd_pcm_t *pcm)
get count of poll descriptors for PCM handle
Definition: pcm.c:1650
snd_pcm_status_get_avail_max
snd_pcm_uframes_t snd_pcm_status_get_avail_max(const snd_pcm_status_t *obj)
Get maximum number of frames available from a PCM status container after last snd_pcm_status call...
Definition: pcm.c:6862
SND_CHMAP_TFL
Definition: pcm.h:581
snd_pcm_format_mask_set
void snd_pcm_format_mask_set(snd_pcm_format_mask_t *mask, snd_pcm_format_t val)
make a format present in a snd_pcm_format_mask_t
Definition: pcm.c:3920
SND_PCM_STATE_SUSPENDED
Definition: pcm.h:307
SND_CHMAP_LLFE
Definition: pcm.h:591
snd_pcm_channel_area_t
Definition: pcm.h:468
snd_async_callback_t
void(* snd_async_callback_t)(snd_async_handler_t *handler)
Async notification callback.
Definition: global.h:121
SND_PCM_TYPE_COPY
Definition: pcm.h:414
SND_PCM_FORMAT_S24
Definition: pcm.h:238
SND_CHMAP_RLFE
Definition: pcm.h:592
SND_PCM_TYPE_IEC958
Definition: pcm.h:452
SND_PCM_FORMAT_S24_BE
Definition: pcm.h:143
snd_pcm_format_set_silence
int snd_pcm_format_set_silence(snd_pcm_format_t format, void *buf, unsigned int samples)
Silence a PCM samples buffer.
Definition: pcm_misc.c:607
snd_pcm_hw_params_set_periods_first
int snd_pcm_hw_params_set_periods_first(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir)
Restrict a configuration space to contain only its minimum periods count.
Definition: pcm.c:5418
SND_PCM_TYPE_IOPLUG
Definition: pcm.h:456
SND_CHMAP_TYPE_LAST
Definition: pcm.h:554
snd_pcm_start
int snd_pcm_start(snd_pcm_t *pcm)
Start a PCM.
Definition: pcm.c:1213
snd_pcm_subformat_t
snd_pcm_subformat_t
Definition: pcm.h:284
snd_pcm_format_unsigned
int snd_pcm_format_unsigned(snd_pcm_format_t format)
Return sign info for a PCM sample linear format.
Definition: pcm_misc.c:85
SND_PCM_STATE_PRIVATE1
Definition: pcm.h:312
snd_pcm_hw_params_set_period_size_min
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)
Restrict a configuration space with a minimum period size.
Definition: pcm.c:5124
snd_pcm_hw_params_t
struct _snd_pcm_hw_params snd_pcm_hw_params_t
Definition: pcm.h:64
snd_pcm_chmap_t
Definition: pcm.h:608
SND_CHMAP_RC
Definition: pcm.h:570
snd_pcm_hw_params_supports_audio_ts_type
int snd_pcm_hw_params_supports_audio_ts_type(const snd_pcm_hw_params_t *params, int type)
Check if hardware supports type of audio timestamps.
Definition: pcm.c:3630
snd_pcm_type
snd_pcm_type_t snd_pcm_type(snd_pcm_t *pcm)
get type of PCM handle
Definition: pcm.c:721
snd_pcm_areas_copy_wrap
int snd_pcm_areas_copy_wrap(const snd_pcm_channel_area_t *dst_channels, snd_pcm_uframes_t dst_offset, const snd_pcm_uframes_t dst_size, const snd_pcm_channel_area_t *src_channels, snd_pcm_uframes_t src_offset, const snd_pcm_uframes_t src_size, const unsigned int channels, snd_pcm_uframes_t frames, const snd_pcm_format_t format)
Copy one or more areas.
Definition: pcm.c:3307
snd_pcm_hw_params_set_access_last
int snd_pcm_hw_params_set_access_last(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_access_t *_access)
Restrict a configuration space to contain only its last access type.
Definition: pcm.c:4152
snd_pcm_channel_area_t::addr
void * addr
Definition: pcm.h:470
snd_pcm_status_t
struct _snd_pcm_status snd_pcm_status_t
Definition: pcm.h:69
snd_pcm_info_t
struct _snd_pcm_info snd_pcm_info_t
Definition: pcm.h:48
SND_PCM_FORMAT_U8
Definition: pcm.h:131
snd_pcm_chmap_name
const char * snd_pcm_chmap_name(enum snd_pcm_chmap_position val)
Definition: pcm.c:8063
snd_pcm_hw_params_can_mmap_sample_resolution
int snd_pcm_hw_params_can_mmap_sample_resolution(const snd_pcm_hw_params_t *params)
Check if hardware supports sample-resolution mmap for given configuration.
Definition: pcm.c:3376
SND_PCM_FORMAT_U20_3BE
Definition: pcm.h:203
snd_pcm_hw_params_set_period_time_first
int snd_pcm_hw_params_set_period_time_first(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir)
Restrict a configuration space to contain only its minimum period time.
Definition: pcm.c:4994
snd_pcm_format_mask_reset
void snd_pcm_format_mask_reset(snd_pcm_format_mask_t *mask, snd_pcm_format_t val)
make a format missing from a snd_pcm_format_mask_t
Definition: pcm.c:3930
SND_PCM_FORMAT_S16_BE
Definition: pcm.h:135
SND_PCM_FORMAT_U16_BE
Definition: pcm.h:139
snd_pcm_hw_params_get_format_mask
void snd_pcm_hw_params_get_format_mask(snd_pcm_hw_params_t *params, snd_pcm_format_mask_t *mask)
Get format mask from a configuration space.
Definition: pcm.c:4272
snd_pcm_hw_params_set_format_first
int snd_pcm_hw_params_set_format_first(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_format_t *format)
Restrict a configuration space to contain only its first format.
Definition: pcm.c:4233
SND_PCM_TYPE_PLUG
Definition: pcm.h:428
_snd_pcm_type
_snd_pcm_type
Definition: pcm.h:397
SND_PCM_FORMAT_MU_LAW
Definition: pcm.h:169
snd_pcm_hw_params_set_rate_near
int snd_pcm_hw_params_set_rate_near(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir)
Restrict a configuration space to have rate nearest to a target.
Definition: pcm.c:4671
SND_CHMAP_TYPE_PAIRED
Definition: pcm.h:553
snd_pcm_chmap_type
snd_pcm_chmap_type
Definition: pcm.h:549
SND_PCM_TYPE_RATE
Definition: pcm.h:424
SND_PCM_FORMAT_S24_3LE
Definition: pcm.h:189
snd_pcm_hw_params_is_joint_duplex
int snd_pcm_hw_params_is_joint_duplex(const snd_pcm_hw_params_t *params)
Check if hardware does joint-duplex (playback and capture are somewhat correlated) ...
Definition: pcm.c:3556
snd_pcm_subclass_t
snd_pcm_subclass_t
Definition: pcm.h:92
snd_pcm_delay
int snd_pcm_delay(snd_pcm_t *pcm, snd_pcm_sframes_t *delayp)
Obtain delay for a running PCM handle.
Definition: pcm.c:1090
SND_PCM_FORMAT_S16_LE
Definition: pcm.h:133
snd_pcm_hw_params_test_format
int snd_pcm_hw_params_test_format(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_format_t val)
Verify if a format is available inside a configuration space for a PCM.
Definition: pcm.c:4206
snd_pcm_areas_silence
int snd_pcm_areas_silence(const snd_pcm_channel_area_t *dst_channels, snd_pcm_uframes_t dst_offset, unsigned int channels, snd_pcm_uframes_t frames, snd_pcm_format_t format)
Silence one or more areas.
Definition: pcm.c:3057
snd_pcm_hw_params_get_buffer_size_max
int snd_pcm_hw_params_get_buffer_size_max(const snd_pcm_hw_params_t *params, snd_pcm_uframes_t *val)
Extract maximum buffer size from a configuration space.
Definition: pcm.c:5693
snd_pcm_format_description
const char * snd_pcm_format_description(const snd_pcm_format_t format)
get description of PCM sample format
Definition: pcm.c:2037
SND_PCM_TYPE_NULL
Definition: pcm.h:408
snd_pcm_wait
int snd_pcm_wait(snd_pcm_t *pcm, int timeout)
Wait for a PCM to become ready.
Definition: pcm.c:2738
snd_pcm_hook_remove
int snd_pcm_hook_remove(snd_pcm_hook_t *hook)
Remove a PCM hook.
Definition: pcm_hooks.c:628
snd_pcm_meter_search_scope
snd_pcm_scope_t * snd_pcm_meter_search_scope(snd_pcm_t *pcm, const char *name)
Search an installed scope inside a SND_PCM_TYPE_METER PCM.
Definition: pcm_meter.c:859
snd_pcm_hw_params_dump
int snd_pcm_hw_params_dump(snd_pcm_hw_params_t *params, snd_output_t *out)
Dump a PCM hardware configuration space.
Definition: pcm.c:3356
snd_pcm_hw_params_get_tick_time_max
int snd_pcm_hw_params_get_tick_time_max(const snd_pcm_hw_params_t *params, unsigned int *val, int *dir) __attribute__((deprecated))
(DEPRECATED) Extract maximum tick time from a configuration space
Definition: pcm.c:5892
snd_pcm_hw_params_set_subformat_last
int snd_pcm_hw_params_set_subformat_last(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_subformat_t *subformat)
Restrict a configuration space to contain only its last subformat.
Definition: pcm.c:4343
snd_pcm_hw_params_is_block_transfer
int snd_pcm_hw_params_is_block_transfer(const snd_pcm_hw_params_t *params)
Check if hardware does block transfers for samples for given configuration.
Definition: pcm.c:3436
snd_pcm_access_mask_any
void snd_pcm_access_mask_any(snd_pcm_access_mask_t *mask)
set all bits in a snd_pcm_access_mask_t
Definition: pcm.c:3787
snd_pcm_hw_params_get_buffer_time
int snd_pcm_hw_params_get_buffer_time(const snd_pcm_hw_params_t *params, unsigned int *val, int *dir)
Extract buffer time from a configuration space.
Definition: pcm.c:5467
snd_pcm_close
int snd_pcm_close(snd_pcm_t *pcm)
close PCM handle
Definition: pcm.c:748
snd_pcm_info_get_subdevice_name
const char * snd_pcm_info_get_subdevice_name(const snd_pcm_info_t *obj)
Get subdevice name from a PCM info container.
Definition: pcm.c:6992
snd_pcm_status_get_driver_htstamp
void snd_pcm_status_get_driver_htstamp(const snd_pcm_status_t *obj, snd_htimestamp_t *ptr)
Get &quot;now&quot; hi-res driver timestamp from a PCM status container. Defines when the status was generated ...
Definition: pcm.c:6800
snd_pcm_sw_params_set_xfer_align
int snd_pcm_sw_params_set_xfer_align(snd_pcm_t *pcm, snd_pcm_sw_params_t *params, snd_pcm_uframes_t val) __attribute__((deprecated))
(DEPRECATED) Set xfer align inside a software configuration container
Definition: pcm.c:6452
SND_CHMAP_TC
Definition: pcm.h:580
SND_PCM_FORMAT_U24_LE
Definition: pcm.h:145
snd_pcm_subformat_mask_reset
void snd_pcm_subformat_mask_reset(snd_pcm_subformat_mask_t *mask, snd_pcm_subformat_t val)
make a subformat missing from a snd_pcm_subformat_mask_t
Definition: pcm.c:4033
SND_CHMAP_TYPE_NONE
Definition: pcm.h:550
SND_PCM_TYPE_ALAW
Definition: pcm.h:418
snd_pcm_hw_params_set_period_time
int snd_pcm_hw_params_set_period_time(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int val, int dir)
Restrict a configuration space to contain only one period time.
Definition: pcm.c:4909
snd_pcm_subformat_mask_free
void snd_pcm_subformat_mask_free(snd_pcm_subformat_mask_t *obj)
frees a previously allocated snd_pcm_subformat_mask_t
Definition: pcm.c:3963
snd_pcm_sw_params_get_tstamp_mode
int snd_pcm_sw_params_get_tstamp_mode(const snd_pcm_sw_params_t *params, snd_pcm_tstamp_t *val)
Get timestamp mode from a software configuration container.
Definition: pcm.c:6294
snd_pcm_status_dump
int snd_pcm_status_dump(snd_pcm_status_t *status, snd_output_t *out)
Dump status.
Definition: pcm.c:2256
SND_PCM_TYPE_LINEAR
Definition: pcm.h:416
snd_pcm_hw_params_set_rate_min
int snd_pcm_hw_params_set_rate_min(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir)
Restrict a configuration space with a minimum rate.
Definition: pcm.c:4621
SND_PCM_TYPE_MIX
Definition: pcm.h:434
snd_pcm_scope_set_name
void snd_pcm_scope_set_name(snd_pcm_scope_t *scope, const char *val)
Set name of a SND_PCM_TYPE_METER PCM scope.
Definition: pcm_meter.c:949
SND_PCM_TYPE_MULAW
Definition: pcm.h:420
SND_PCM_FORMAT_IEC958_SUBFRAME
Definition: pcm.h:250
SND_SPCM_LATENCY_REALTIME
Definition: pcm.h:1270
snd_pcm_hw_params_copy
void snd_pcm_hw_params_copy(snd_pcm_hw_params_t *dst, const snd_pcm_hw_params_t *src)
copy one snd_pcm_hw_params_t to another
Definition: pcm.c:4076
snd_pcm_start_t
snd_pcm_start_t
Definition: pcm.h:316
snd_pcm_format_width
int snd_pcm_format_width(snd_pcm_format_t format)
Return nominal bits per a PCM sample.
Definition: pcm_misc.c:210
snd_pcm_hw_params_can_pause
int snd_pcm_hw_params_can_pause(const snd_pcm_hw_params_t *params)
Check if hardware supports pause.
Definition: pcm.c:3496
snd_pcm_hw_params_set_buffer_size
int snd_pcm_hw_params_set_buffer_size(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_uframes_t val)
Restrict a configuration space to contain only one buffer size.
Definition: pcm.c:5726
snd_pcm_nonblock
int snd_pcm_nonblock(snd_pcm_t *pcm, int nonblock)
set nonblock mode
Definition: pcm.c:781
snd_pcm_status_get_tstamp
void snd_pcm_status_get_tstamp(const snd_pcm_status_t *obj, snd_timestamp_t *ptr)
Get &quot;now&quot; timestamp from a PCM status container.
Definition: pcm.c:6760
snd_pcm_scope_get_callback_private
void * snd_pcm_scope_get_callback_private(snd_pcm_scope_t *scope)
Get callbacks private value for a SND_PCM_TYPE_METER PCM scope.
Definition: pcm_meter.c:979
SND_SPCM_XRUN_IGNORE
Definition: pcm.h:1276
snd_pcm_status_sizeof
size_t snd_pcm_status_sizeof(void)
get size of snd_pcm_status_t
Definition: pcm.c:6669
snd_pcm_hw_params_set_format_last
int snd_pcm_hw_params_set_format_last(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_format_t *format)
Restrict a configuration space to contain only its last format.
Definition: pcm.c:4249
snd_pcm_info_free
void snd_pcm_info_free(snd_pcm_info_t *obj)
frees a previously allocated snd_pcm_info_t
Definition: pcm.c:6905
SND_SPCM_DUPLEX_LIBERAL
Definition: pcm.h:1284
SND_PCM_FORMAT_S32_BE
Definition: pcm.h:151
snd_pcm_hw_params_get_period_size
int snd_pcm_hw_params_get_period_size(const snd_pcm_hw_params_t *params, snd_pcm_uframes_t *frames, int *dir)
Extract period size from a configuration space.
Definition: pcm.c:5030
snd_pcm_get_params
int snd_pcm_get_params(snd_pcm_t *pcm, snd_pcm_uframes_t *buffer_size, snd_pcm_uframes_t *period_size)
Get the transfer size parameters in a simple way.
Definition: pcm.c:8648
SND_PCM_TSTAMP_NONE
Definition: pcm.h:336
snd_pcm_hw_params_malloc
int snd_pcm_hw_params_malloc(snd_pcm_hw_params_t **ptr)
allocate an invalid snd_pcm_hw_params_t using standard malloc
Definition: pcm.c:4053
SND_CHMAP_FLC
Definition: pcm.h:571
SND_PCM_STREAM_CAPTURE
Definition: pcm.h:105
snd_pcm_hw_params_get_rate_max
int snd_pcm_hw_params_get_rate_max(const snd_pcm_hw_params_t *params, unsigned int *val, int *dir)
Extract maximum rate from a configuration space.
Definition: pcm.c:4575
SND_CHMAP_TSL
Definition: pcm.h:589
snd_pcm_hw_params_set_period_size_max
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)
Restrict a configuration space with a maximum period size.
Definition: pcm.c:5143
snd_pcm_chmap_print
int snd_pcm_chmap_print(const snd_pcm_chmap_t *map, size_t maxlen, char *buf)
Definition: pcm.c:8131
SND_PCM_STATE_RUNNING
Definition: pcm.h:299
snd_pcm_access_mask_free
void snd_pcm_access_mask_free(snd_pcm_access_mask_t *obj)
frees a previously allocated snd_pcm_access_mask_t
Definition: pcm.c:3758
SND_PCM_FORMAT_FLOAT64_BE
Definition: pcm.h:163
snd_pcm_hw_params_set_subformat_mask
int snd_pcm_hw_params_set_subformat_mask(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_subformat_mask_t *mask)
Restrict a configuration space to contain only a set of subformats.
Definition: pcm.c:4356
snd_pcm_format_mask_free
void snd_pcm_format_mask_free(snd_pcm_format_mask_t *obj)
frees a previously allocated snd_pcm_format_mask_t
Definition: pcm.c:3860
snd_pcm_subformat_mask_empty
int snd_pcm_subformat_mask_empty(const snd_pcm_subformat_mask_t *mask)
test, if given a snd_pcm_subformat_mask_t is empty
Definition: pcm.c:4013
snd_pcm_xrun_mode_name
const char * snd_pcm_xrun_mode_name(snd_pcm_xrun_t mode) __attribute__((deprecated))
(DEPRECATED) get name of PCM xrun mode setting
Definition: pcm.c:2116
snd_pcm_hw_params_test_periods
int snd_pcm_hw_params_test_periods(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int val, int dir)
Verify if a periods count is available inside a configuration space for a PCM.
Definition: pcm.c:5319
SND_PCM_TYPE_LADSPA
Definition: pcm.h:442
snd_pcm_hw_params_set_periods_integer
int snd_pcm_hw_params_set_periods_integer(snd_pcm_t *pcm, snd_pcm_hw_params_t *params)
Restrict a configuration space to contain only integer periods counts.
Definition: pcm.c:5449
snd_pcm_meter_get_now
snd_pcm_uframes_t snd_pcm_meter_get_now(snd_pcm_t *pcm)
Get meter &quot;now&quot; frame pointer from a SND_PCM_TYPE_METER PCM.
Definition: pcm_meter.c:921
SND_CHMAP_SL
Definition: pcm.h:568
SND_PCM_TYPE_METER
Definition: pcm.h:432
snd_pcm_format_t
snd_pcm_format_t
Definition: pcm.h:125
snd_pcm_chmap_long_name
const char * snd_pcm_chmap_long_name(enum snd_pcm_chmap_position val)
Definition: pcm.c:8116
snd_pcm_sframes_t
long snd_pcm_sframes_t
Definition: pcm.h:376
SND_PCM_STATE_PREPARED
Definition: pcm.h:297
SND_PCM_FORMAT_U32_BE
Definition: pcm.h:155
snd_pcm_hw_params_test_rate
int snd_pcm_hw_params_test_rate(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int val, int dir)
Verify if a rate is available inside a configuration space for a PCM.
Definition: pcm.c:4591
SND_PCM_TYPE_FILE
Definition: pcm.h:406
SND_CHMAP_FLW
Definition: pcm.h:575
snd_pcm_hw_params_test_buffer_size
int snd_pcm_hw_params_test_buffer_size(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_uframes_t val)
Verify if a buffer size is available inside a configuration space for a PCM.
Definition: pcm.c:5712
SND_PCM_FORMAT_S18_3LE
Definition: pcm.h:205
SND_PCM_FORMAT_MPEG
Definition: pcm.h:175
snd_pcm_open_lconf
int snd_pcm_open_lconf(snd_pcm_t **pcm, const char *name, snd_pcm_stream_t stream, int mode, snd_config_t *lconf)
Opens a PCM using local configuration.
Definition: pcm.c:2611
SND_PCM_STATE_PAUSED
Definition: pcm.h:305
snd_pcm_tstamp_mode_name
const char * snd_pcm_tstamp_mode_name(const snd_pcm_tstamp_t mode)
get name of PCM tstamp mode setting
Definition: pcm.c:2132
snd_pcm_chmap_type_name
const char * snd_pcm_chmap_type_name(enum snd_pcm_chmap_type val)
Definition: pcm.c:8030
snd_pcm_hw_params_get_channels_min
int snd_pcm_hw_params_get_channels_min(const snd_pcm_hw_params_t *params, unsigned int *val)
Extract minimum channels count from a configuration space.
Definition: pcm.c:4396
snd_pcm_mmap_begin
int snd_pcm_mmap_begin(snd_pcm_t *pcm, const snd_pcm_channel_area_t **areas, snd_pcm_uframes_t *offset, snd_pcm_uframes_t *frames)
Application request to access a portion of direct (mmap) area.
Definition: pcm.c:7108
snd_pcm_meter_add_scope
int snd_pcm_meter_add_scope(snd_pcm_t *pcm, snd_pcm_scope_t *scope)
Add a scope to a SND_PCM_TYPE_METER PCM.
Definition: pcm_meter.c:844
SND_CHMAP_TSR
Definition: pcm.h:590
SND_PCM_FORMAT_U32
Definition: pcm.h:244
snd_pcm_format_mask_none
void snd_pcm_format_mask_none(snd_pcm_format_mask_t *mask)
reset all bits in a snd_pcm_format_mask_t
Definition: pcm.c:3880
snd_pcm_hw_params_free
void snd_pcm_hw_params_free(snd_pcm_hw_params_t *obj)
frees a previously allocated snd_pcm_hw_params_t
Definition: pcm.c:4066
snd_pcm_hw_params_get_access
int snd_pcm_hw_params_get_access(const snd_pcm_hw_params_t *params, snd_pcm_access_t *_access)
Extract access type from a configuration space.
Definition: pcm.c:4092
snd_pcm_hw_params_set_subformat
int snd_pcm_hw_params_set_subformat(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_subformat_t subformat)
Restrict a configuration space to contain only one subformat.
Definition: pcm.c:4312
snd_pcm_audio_tstamp_config_t
Definition: pcm.h:353
snd_pcm_access_mask_copy
void snd_pcm_access_mask_copy(snd_pcm_access_mask_t *dst, const snd_pcm_access_mask_t *src)
copy one snd_pcm_access_mask_t to another
Definition: pcm.c:3768
SND_PCM_FORMAT_S32
Definition: pcm.h:242
snd_pcm_info_set_stream
void snd_pcm_info_set_stream(snd_pcm_info_t *obj, snd_pcm_stream_t val)
Set wanted stream inside a PCM info container (see snd_ctl_pcm_info)
Definition: pcm.c:7082
snd_pcm_scope_t
struct _snd_pcm_scope snd_pcm_scope_t
Definition: pcm.h:488
snd_pcm_hw_params_sizeof
size_t snd_pcm_hw_params_sizeof(void)
get size of snd_pcm_hw_params_t
Definition: pcm.c:4043
snd_pcm_hw_params_set_tick_time_near
int snd_pcm_hw_params_set_tick_time_near(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir) __attribute__((deprecated))
(DEPRECATED) Restrict a configuration space to have tick time nearest to a target ...
Definition: pcm.c:5989
snd_pcm_hw_params_get_rate_min
int snd_pcm_hw_params_get_rate_min(const snd_pcm_hw_params_t *params, unsigned int *val, int *dir)
Extract minimum rate from a configuration space.
Definition: pcm.c:4557
snd_pcm_avail
snd_pcm_sframes_t snd_pcm_avail(snd_pcm_t *pcm)
Return number of frames ready to be read (capture) / written (playback)
Definition: pcm.c:2872
snd_pcm_sw_params_set_avail_min
int snd_pcm_sw_params_set_avail_min(snd_pcm_t *pcm, snd_pcm_sw_params_t *params, snd_pcm_uframes_t val)
Set avail min inside a software configuration container.
Definition: pcm.c:6382
SND_PCM_TYPE_HW
Definition: pcm.h:399
snd_pcm_info_set_device
void snd_pcm_info_set_device(snd_pcm_info_t *obj, unsigned int val)
Set wanted device inside a PCM info container (see snd_ctl_pcm_info)
Definition: pcm.c:7060
snd_pcm_hw_params_set_rate_resample
int snd_pcm_hw_params_set_rate_resample(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int val)
Restrict a configuration space to contain only real hardware rates.
Definition: pcm.c:4722
SND_CHMAP_FCH
Definition: pcm.h:578
snd_pcm_hw_params_set_channels_last
int snd_pcm_hw_params_set_channels_last(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val)
Restrict a configuration space to contain only its maximum channels count.
Definition: pcm.c:4520
snd_pcm_scope_get_name
const char * snd_pcm_scope_get_name(snd_pcm_scope_t *scope)
Get name of a SND_PCM_TYPE_METER PCM scope.
Definition: pcm_meter.c:959
snd_pcm_scope_s16_open
int snd_pcm_scope_s16_open(snd_pcm_t *pcm, const char *name, snd_pcm_scope_t **scopep)
Add a s16 pseudo scope to a SND_PCM_TYPE_METER PCM.
Definition: pcm_meter.c:1175
SND_CHMAP_TFC
Definition: pcm.h:583
snd_pcm_info_get_subdevice
unsigned int snd_pcm_info_get_subdevice(const snd_pcm_info_t *obj)
Get subdevice from a PCM info container.
Definition: pcm.c:6937
SND_PCM_FORMAT_SPECIAL
Definition: pcm.h:187
snd_pcm_hw_params_set_period_time_min
int snd_pcm_hw_params_set_period_time_min(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir)
Restrict a configuration space with a minimum period time.
Definition: pcm.c:4925
snd_pcm_info_get_subdevices_count
unsigned int snd_pcm_info_get_subdevices_count(const snd_pcm_info_t *obj)
Get subdevices count from a PCM info container.
Definition: pcm.c:7025
SND_CHMAP_TFRC
Definition: pcm.h:588
snd_pcm_hw_params_get_period_time
int snd_pcm_hw_params_get_period_time(const snd_pcm_hw_params_t *params, unsigned int *val, int *dir)
Extract period time from a configuration space.
Definition: pcm.c:4842
snd_pcm_info_get_id
const char * snd_pcm_info_get_id(const snd_pcm_info_t *obj)
Get id from a PCM info container.
Definition: pcm.c:6970
snd_pcm_hw_params_get_tick_time
int snd_pcm_hw_params_get_tick_time(const snd_pcm_hw_params_t *params, unsigned int *val, int *dir) __attribute__((deprecated))
(DEPRECATED) Extract tick time from a configuration space
Definition: pcm.c:5854
snd_pcm_hw_params_get_fifo_size
int snd_pcm_hw_params_get_fifo_size(const snd_pcm_hw_params_t *params)
Get hardware FIFO size info from a configuration space.
Definition: pcm.c:3707
snd_pcm_format_silence
uint8_t snd_pcm_format_silence(snd_pcm_format_t format)
Return 8 bit expressing silence for a PCM sample format.
Definition: pcm_misc.c:594
snd_pcm_hw_params_set_period_size_minmax
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)
Restrict a configuration space to have period sizes in a given range.
Definition: pcm.c:5164
snd_pcm_status_get_state
snd_pcm_state_t snd_pcm_status_get_state(const snd_pcm_status_t *obj)
Get state from a PCM status container (see snd_pcm_state)
Definition: pcm.c:6713
snd_pcm_sw_params_set_stop_threshold
int snd_pcm_sw_params_set_stop_threshold(snd_pcm_t *pcm, snd_pcm_sw_params_t *params, snd_pcm_uframes_t val)
Set stop threshold inside a software configuration container.
Definition: pcm.c:6531
SND_PCM_TYPE_SOFTVOL
Definition: pcm.h:454
snd_pcm_subformat_mask_any
void snd_pcm_subformat_mask_any(snd_pcm_subformat_mask_t *mask)
set all bits in a snd_pcm_subformat_mask_t
Definition: pcm.c:3992
SND_PCM_TYPE_SHM
Definition: pcm.h:410
SND_PCM_CLASS_MULTI
Definition: pcm.h:83
SND_PCM_FORMAT_IMA_ADPCM
Definition: pcm.h:173
snd_output_t
struct _snd_output snd_output_t
Internal structure for an output object.
Definition: output.h:54
snd_htimestamp_t
struct timespec snd_htimestamp_t
Definition: global.h:153
snd_pcm_sw_params_set_xrun_mode
int snd_pcm_sw_params_set_xrun_mode(snd_pcm_t *pcm, snd_pcm_sw_params_t *params, snd_pcm_xrun_t val) __attribute__((deprecated))
(DEPRECATED) Set xrun mode inside a software configuration container
Definition: pcm.c:6225
snd_pcm_format_silence_32
uint32_t snd_pcm_format_silence_32(snd_pcm_format_t format)
Return 32 bit expressing silence for a PCM sample format.
Definition: pcm_misc.c:572
SND_PCM_FORMAT_IEC958_SUBFRAME_LE
Definition: pcm.h:165
snd_pcm_free_chmaps
void snd_pcm_free_chmaps(snd_pcm_chmap_query_t **maps)
Definition: pcm.c:7974
snd_pcm_hw_params_set_format
int snd_pcm_hw_params_set_format(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_format_t val)
Restrict a configuration space to contain only one format.
Definition: pcm.c:4218
snd_pcm_status_get_htstamp
void snd_pcm_status_get_htstamp(const snd_pcm_status_t *obj, snd_htimestamp_t *ptr)
Get &quot;now&quot; hi-res timestamp from a PCM status container.
Definition: pcm.c:6775
snd_pcm_access_mask_sizeof
size_t snd_pcm_access_mask_sizeof(void)
get size of snd_pcm_access_mask_t
Definition: pcm.c:3735
snd_pcm_hw_params_set_channels
int snd_pcm_hw_params_set_channels(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int val)
Restrict a configuration space to contain only one channels count.
Definition: pcm.c:4436
snd_pcm_mmap_readi
snd_pcm_sframes_t snd_pcm_mmap_readi(snd_pcm_t *pcm, void *buffer, snd_pcm_uframes_t size)
Read interleaved frames from a PCM using direct buffer (mmap)
Definition: pcm_mmap.c:199
snd_pcm_meter_get_bufsize
snd_pcm_uframes_t snd_pcm_meter_get_bufsize(snd_pcm_t *pcm)
Get meter buffer size from a SND_PCM_TYPE_METER PCM.
Definition: pcm_meter.c:879
snd_pcm_subformat_mask_copy
void snd_pcm_subformat_mask_copy(snd_pcm_subformat_mask_t *dst, const snd_pcm_subformat_mask_t *src)
copy one snd_pcm_subformat_mask_t to another
Definition: pcm.c:3973
SND_SPCM_DUPLEX_PEDANTIC
Definition: pcm.h:1286
snd_pcm_hw_params_set_buffer_time_max
int snd_pcm_hw_params_set_buffer_time_max(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir)
Restrict a configuration space with a maximum buffer time.
Definition: pcm.c:5564
snd_pcm_scope_set_ops
void snd_pcm_scope_set_ops(snd_pcm_scope_t *scope, const snd_pcm_scope_ops_t *val)
Set callbacks for a SND_PCM_TYPE_METER PCM scope.
Definition: pcm_meter.c:969
snd_pcm_subformat_mask_set
void snd_pcm_subformat_mask_set(snd_pcm_subformat_mask_t *mask, snd_pcm_subformat_t val)
make a subformat present in a snd_pcm_subformat_mask_t
Definition: pcm.c:4023
SND_PCM_FORMAT_S24_LE
Definition: pcm.h:141
SND_CHMAP_LFE
Definition: pcm.h:567
SND_PCM_FORMAT_U18_3LE
Definition: pcm.h:209
SND_PCM_FORMAT_S24_3BE
Definition: pcm.h:191
snd_pcm_hw_params_is_half_duplex
int snd_pcm_hw_params_is_half_duplex(const snd_pcm_hw_params_t *params)
Check if hardware does half-duplex only.
Definition: pcm.c:3536
SND_PCM_CLASS_DIGITIZER
Definition: pcm.h:87
SND_PCM_START_EXPLICIT
Definition: pcm.h:320
snd_pcm_format_mask_any
void snd_pcm_format_mask_any(snd_pcm_format_mask_t *mask)
set all bits in a snd_pcm_format_mask_t
Definition: pcm.c:3889
snd_pcm_hw_params_set_period_wakeup
int snd_pcm_hw_params_set_period_wakeup(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int val)
Restrict a configuration space to settings without period wakeups.
Definition: pcm.c:4801
SND_CHMAP_TRR
Definition: pcm.h:585
snd_pcm_readn
snd_pcm_sframes_t snd_pcm_readn(snd_pcm_t *pcm, void **bufs, snd_pcm_uframes_t size)
Read non interleaved frames to a PCM.
Definition: pcm.c:1585
snd_pcm_status_get_trigger_tstamp
void snd_pcm_status_get_trigger_tstamp(const snd_pcm_status_t *obj, snd_timestamp_t *ptr)
Get trigger timestamp from a PCM status container.
Definition: pcm.c:6728
snd_pcm_hw_params_get_rate_numden
int snd_pcm_hw_params_get_rate_numden(const snd_pcm_hw_params_t *params, unsigned int *rate_num, unsigned int *rate_den)
Get rate exact info from a configuration space.
Definition: pcm.c:3666
SND_PCM_TYPE_DSHARE
Definition: pcm.h:450
snd_pcm_hw_params_set_tick_time_max
int snd_pcm_hw_params_set_tick_time_max(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir) __attribute__((deprecated))
(DEPRECATED) Restrict a configuration space with a maximum tick time
Definition: pcm.c:5954
SND_CHMAP_RLC
Definition: pcm.h:573
SND_PCM_STATE_DISCONNECTED
Definition: pcm.h:309
snd_spcm_xrun_type_t
snd_spcm_xrun_type_t
Definition: pcm.h:1274
snd_pcm_hw_params_set_access_first
int snd_pcm_hw_params_set_access_first(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_access_t *_access)
Restrict a configuration space to contain only its first access type.
Definition: pcm.c:4136
SND_PCM_FORMAT_U18_3BE
Definition: pcm.h:211
snd_pcm_sw_params_set_sleep_min
int snd_pcm_sw_params_set_sleep_min(snd_pcm_t *pcm, snd_pcm_sw_params_t *params, unsigned int val) __attribute__((deprecated))
(DEPRECATED) Set minimum number of ticks to sleep inside a software configuration container ...
Definition: pcm.c:6343
SND_PCM_ACCESS_RW_NONINTERLEAVED
Definition: pcm.h:120
snd_pcm_hook_type_t
snd_pcm_hook_type_t
Definition: pcm.h:1172
snd_pcm_mmap_writei
snd_pcm_sframes_t snd_pcm_mmap_writei(snd_pcm_t *pcm, const void *buffer, snd_pcm_uframes_t size)
Write interleaved frames to a PCM using direct buffer (mmap)
Definition: pcm_mmap.c:149
snd_pcm_dump_setup
int snd_pcm_dump_setup(snd_pcm_t *pcm, snd_output_t *out)
Dump current setup (hardware and software) for PCM.
Definition: pcm.c:2243
snd_pcm_stream
snd_pcm_stream_t snd_pcm_stream(snd_pcm_t *pcm)
get stream for a PCM handle
Definition: pcm.c:734
SND_SPCM_LATENCY_MEDIUM
Definition: pcm.h:1267
SND_CHMAP_UNKNOWN
Definition: pcm.h:559
snd_pcm_avail_update
snd_pcm_sframes_t snd_pcm_avail_update(snd_pcm_t *pcm)
Return number of frames ready to be read (capture) / written (playback)
Definition: pcm.c:2848
snd_pcm_info_get_sync
snd_pcm_sync_id_t snd_pcm_info_get_sync(const snd_pcm_info_t *obj)
Get hardware synchronization ID from a PCM info container.
Definition: pcm.c:7047
SND_PCM_FORMAT_U16
Definition: pcm.h:236
SND_PCM_TYPE_HOOKS
Definition: pcm.h:401
SND_PCM_STATE_SETUP
Definition: pcm.h:295
snd_pcm_hw_params_set_export_buffer
int snd_pcm_hw_params_set_export_buffer(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int val)
Restrict a configuration space to allow the buffer to be accessible from outside. ...
Definition: pcm.c:4754
SND_PCM_FORMAT_U24_3LE
Definition: pcm.h:193
snd_pcm_hw_params_set_tick_time
int snd_pcm_hw_params_set_tick_time(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int val, int dir) __attribute__((deprecated))
(DEPRECATED) Restrict a configuration space to contain only one tick time
Definition: pcm.c:5924
snd_pcm_hook_get_pcm
snd_pcm_t * snd_pcm_hook_get_pcm(snd_pcm_hook_t *hook)
Get PCM handle for a PCM hook.
Definition: pcm_hooks.c:560
snd_pcm_query_chmaps
snd_pcm_chmap_query_t ** snd_pcm_query_chmaps(snd_pcm_t *pcm)
Definition: pcm.c:7963
snd_pcm_info_get_subclass
snd_pcm_subclass_t snd_pcm_info_get_subclass(const snd_pcm_info_t *obj)
Get subclass from a PCM info container.
Definition: pcm.c:7014
snd_spcm_duplex_type_t
snd_spcm_duplex_type_t
Definition: pcm.h:1282
SND_PCM_FORMAT_S20
Definition: pcm.h:252
snd_pcm_info_get_class
snd_pcm_class_t snd_pcm_info_get_class(const snd_pcm_info_t *obj)
Get class from a PCM info container.
Definition: pcm.c:7003
snd_pcm_sw_params_set_tstamp_mode
int snd_pcm_sw_params_set_tstamp_mode(snd_pcm_t *pcm, snd_pcm_sw_params_t *params, snd_pcm_tstamp_t val)
Set timestamp mode inside a software configuration container.
Definition: pcm.c:6273
SND_PCM_TYPE_LBSERVER
Definition: pcm.h:438
snd_pcm_access_mask_none
void snd_pcm_access_mask_none(snd_pcm_access_mask_t *mask)
reset all bits in a snd_pcm_access_mask_t
Definition: pcm.c:3778
snd_pcm_access_mask_t
struct _snd_pcm_access_mask snd_pcm_access_mask_t
Definition: pcm.h:71
SND_PCM_FORMAT_FLOAT
Definition: pcm.h:246
snd_pcm_set_params
int snd_pcm_set_params(snd_pcm_t *pcm, snd_pcm_format_t format, snd_pcm_access_t access, unsigned int channels, unsigned int rate, int soft_resample, unsigned int latency)
Set the hardware and software parameters in a simple way.
Definition: pcm.c:8459
snd_pcm_subformat_mask_sizeof
size_t snd_pcm_subformat_mask_sizeof(void)
get size of snd_pcm_subformat_mask_t
Definition: pcm.c:3940
snd_pcm_htimestamp
int snd_pcm_htimestamp(snd_pcm_t *pcm, snd_pcm_uframes_t *avail, snd_htimestamp_t *tstamp)
Obtain last position update hi-res timestamp.
Definition: pcm.c:1142
snd_pcm_hook_get_private
void * snd_pcm_hook_get_private(snd_pcm_hook_t *hook)
Get callback function private data for a PCM hook.
Definition: pcm_hooks.c:571
snd_pcm_scope_malloc
int snd_pcm_scope_malloc(snd_pcm_scope_t **ptr)
allocate an invalid snd_pcm_scope_t using standard malloc
Definition: pcm_meter.c:1226
SND_PCM_TYPE_JACK
Definition: pcm.h:446
snd_pcm_type_name
const char * snd_pcm_type_name(snd_pcm_type_t type)
get name of PCM type
Definition: pcm.c:2171
snd_pcm_rewindable
snd_pcm_sframes_t snd_pcm_rewindable(snd_pcm_t *pcm)
Get safe count of frames which can be rewinded.
Definition: pcm.c:1335
snd_pcm_bytes_to_frames
snd_pcm_sframes_t snd_pcm_bytes_to_frames(snd_pcm_t *pcm, ssize_t bytes)
Convert bytes in frames for a PCM.
Definition: pcm.c:2291
snd_pcm_access_mask_set
void snd_pcm_access_mask_set(snd_pcm_access_mask_t *mask, snd_pcm_access_t val)
make an access type present in a snd_pcm_access_mask_t
Definition: pcm.c:3818
SND_PCM_TSTAMP_TYPE_GETTIMEOFDAY
Definition: pcm.h:347
snd_pcm_hw_params_set_tick_time_first
int snd_pcm_hw_params_set_tick_time_first(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir) __attribute__((deprecated))
(DEPRECATED) Restrict a configuration space to contain only its minimum tick time ...
Definition: pcm.c:6008
snd_pcm_stream_name
const char * snd_pcm_stream_name(const snd_pcm_stream_t stream)
get name of PCM stream type
Definition: pcm.c:2001
snd_pcm_info_get_stream
snd_pcm_stream_t snd_pcm_info_get_stream(const snd_pcm_info_t *obj)
Get stream (direction) from a PCM info container.
Definition: pcm.c:6948
snd_pcm_hook_t
struct _snd_pcm_hook snd_pcm_hook_t
Definition: pcm.h:1180
snd_pcm_status_free
void snd_pcm_status_free(snd_pcm_status_t *obj)
frees a previously allocated snd_pcm_status_t
Definition: pcm.c:6692
snd_pcm_forwardable
snd_pcm_sframes_t snd_pcm_forwardable(snd_pcm_t *pcm)
Get safe count of frames which can be forwarded.
Definition: pcm.c:1395
snd_pcm_sw_params_get_tstamp_type
int snd_pcm_sw_params_get_tstamp_type(const snd_pcm_sw_params_t *params, snd_pcm_tstamp_type_t *val)
Get timestamp type from a software configuration container.
Definition: pcm.c:6326
snd_pcm_hw_params_get_rate
int snd_pcm_hw_params_get_rate(const snd_pcm_hw_params_t *params, unsigned int *val, int *dir)
Extract rate from a configuration space.
Definition: pcm.c:4539
snd_pcm_dump_hw_setup
int snd_pcm_dump_hw_setup(snd_pcm_t *pcm, snd_output_t *out)
Dump current hardware setup for PCM.
Definition: pcm.c:2186
snd_pcm_format_size
ssize_t snd_pcm_format_size(snd_pcm_format_t format, size_t samples)
Return bytes needed to store a quantity of PCM sample.
Definition: pcm_misc.c:342
snd_pcm_hw_params_can_sync_start
int snd_pcm_hw_params_can_sync_start(const snd_pcm_hw_params_t *params)
Check if hardware supports synchronized start with sample resolution.
Definition: pcm.c:3576
SND_PCM_STREAM_PLAYBACK
Definition: pcm.h:103
snd_pcm_name
const char * snd_pcm_name(snd_pcm_t *pcm)
get identifier of PCM handle
Definition: pcm.c:708
snd_pcm_hw_params_set_access_mask
int snd_pcm_hw_params_set_access_mask(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_access_mask_t *mask)
Restrict a configuration space to contain only a set of access types.
Definition: pcm.c:4165
snd_pcm_hw_params_set_tick_time_minmax
int snd_pcm_hw_params_set_tick_time_minmax(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *min, int *mindir, unsigned int *max, int *maxdir) __attribute__((deprecated))
(DEPRECATED) Restrict a configuration space to have tick times in a given range
Definition: pcm.c:5971
SND_PCM_FORMAT_U24_3BE
Definition: pcm.h:195
snd_pcm_sw_params_get_stop_threshold
int snd_pcm_sw_params_get_stop_threshold(const snd_pcm_sw_params_t *params, snd_pcm_uframes_t *val)
Get stop threshold from a software configuration container.
Definition: pcm.c:6553
snd_pcm_format_silence_16
uint16_t snd_pcm_format_silence_16(snd_pcm_format_t format)
Return 16 bit expressing silence for a PCM sample format.
Definition: pcm_misc.c:583
snd_pcm_bytes_to_samples
long snd_pcm_bytes_to_samples(snd_pcm_t *pcm, ssize_t bytes)
Convert bytes in samples for a PCM.
Definition: pcm.c:2323
snd_pcm_hw_params_set_buffer_size_min
int snd_pcm_hw_params_set_buffer_size_min(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_uframes_t *val)
Restrict a configuration space with a minimum buffer size.
Definition: pcm.c:5738
snd_pcm_hw_params_test_access
int snd_pcm_hw_params_test_access(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_access_t _access)
Verify if an access type is available inside a configuration space for a PCM.
Definition: pcm.c:4109
snd_pcm_hw_params_get_buffer_time_max
int snd_pcm_hw_params_get_buffer_time_max(const snd_pcm_hw_params_t *params, unsigned int *val, int *dir)
Extract maximum buffer time from a configuration space.
Definition: pcm.c:5503
SND_PCM_TYPE_INET
Definition: pcm.h:412
snd_pcm_hw_params_can_resume
int snd_pcm_hw_params_can_resume(const snd_pcm_hw_params_t *params)
Check if hardware supports resume.
Definition: pcm.c:3516
SND_PCM_STATE_XRUN
Definition: pcm.h:301
snd_pcm_state
snd_pcm_state_t snd_pcm_state(snd_pcm_t *pcm)
Return PCM state.
Definition: pcm.c:1020
snd_pcm_tstamp_type_t
snd_pcm_tstamp_type_t
Definition: pcm.h:346
snd_pcm_hw_params_get_subformat
int snd_pcm_hw_params_get_subformat(const snd_pcm_hw_params_t *params, snd_pcm_subformat_t *subformat)
Extract subformat from a configuration space.
Definition: pcm.c:4287
snd_pcm_hw_params_set_buffer_size_first
int snd_pcm_hw_params_set_buffer_size_first(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_uframes_t *val)
Restrict a configuration space to contain only its minimum buffer size.
Definition: pcm.c:5811
snd_pcm_status_get_overrange
snd_pcm_uframes_t snd_pcm_status_get_overrange(const snd_pcm_status_t *obj)
Get count of ADC overrange detections since last call.
Definition: pcm.c:6872
SND_PCM_FORMAT_S20_LE
Definition: pcm.h:179
SND_PCM_TYPE_DMIX
Definition: pcm.h:444
snd_pcm_sw_params_current
int snd_pcm_sw_params_current(snd_pcm_t *pcm, snd_pcm_sw_params_t *params)
Return current software configuration for a PCM.
Definition: pcm.c:6070
SND_PCM_FORMAT_S16
Definition: pcm.h:234
SND_PCM_CLASS_GENERIC
Definition: pcm.h:81
snd_pcm_resume
int snd_pcm_resume(snd_pcm_t *pcm)
Resume from suspend, no samples are lost.
Definition: pcm.c:1119
snd_pcm_format_mask_malloc
int snd_pcm_format_mask_malloc(snd_pcm_format_mask_t **ptr)
allocate an empty snd_pcm_format_mask_t using standard malloc
Definition: pcm.c:3847
snd_pcm_writen
snd_pcm_sframes_t snd_pcm_writen(snd_pcm_t *pcm, void **bufs, snd_pcm_uframes_t size)
Write non interleaved frames to a PCM.
Definition: pcm.c:1507
snd_pcm_format_signed
int snd_pcm_format_signed(snd_pcm_format_t format)
Return sign info for a PCM sample linear format.
Definition: pcm_misc.c:35
snd_pcm_hw_params_set_rate_max
int snd_pcm_hw_params_set_rate_max(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir)
Restrict a configuration space with a maximum rate.
Definition: pcm.c:4636
snd_pcm_hw_params_set_rate_last
int snd_pcm_hw_params_set_rate_last(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir)
Restrict a configuration space to contain only its maximum rate.
Definition: pcm.c:4709
SND_CHMAP_TFR
Definition: pcm.h:582
snd_async_handler_get_pcm
snd_pcm_t * snd_async_handler_get_pcm(snd_async_handler_t *handler)
Return PCM handle related to an async handler.
Definition: pcm.c:2389
snd_pcm_prepare
int snd_pcm_prepare(snd_pcm_t *pcm)
Prepare PCM for use.
Definition: pcm.c:1164
SND_PCM_TYPE_SHARE
Definition: pcm.h:430
snd_pcm_info_get_card
int snd_pcm_info_get_card(const snd_pcm_info_t *obj)
Get card from a PCM info container.
Definition: pcm.c:6959
SND_PCM_FORMAT_U32_LE
Definition: pcm.h:153
snd_pcm_meter_get_boundary
snd_pcm_uframes_t snd_pcm_meter_get_boundary(snd_pcm_t *pcm)
Get boundary for frame pointers from a SND_PCM_TYPE_METER PCM.
Definition: pcm_meter.c:935
SND_PCM_STATE_DRAINING
Definition: pcm.h:303
SND_PCM_ACCESS_RW_INTERLEAVED
Definition: pcm.h:118
snd_spcm_init
int snd_spcm_init(snd_pcm_t *pcm, unsigned int rate, unsigned int channels, snd_pcm_format_t format, snd_pcm_subformat_t subformat, snd_spcm_latency_t latency, snd_pcm_access_t _access, snd_spcm_xrun_type_t xrun_type)
Set up a simple PCM.
Definition: pcm_simple.c:157
snd_async_handler_t
struct _snd_async_handler snd_async_handler_t
Internal structure for an async notification client handler.
Definition: global.h:114
snd_pcm_format_cpu_endian
int snd_pcm_format_cpu_endian(snd_pcm_format_t format)
Return endian info for a PCM sample format.
Definition: pcm_misc.c:196
SND_PCM_FORMAT_S20_3BE
Definition: pcm.h:199
snd_pcm_drain
int snd_pcm_drain(snd_pcm_t *pcm)
Stop a PCM preserving pending frames.
Definition: pcm.c:1278
SND_PCM_FORMAT_U24
Definition: pcm.h:240
SND_PCM_CLASS_MODEM
Definition: pcm.h:85
snd_pcm_sw_params_free
void snd_pcm_sw_params_free(snd_pcm_sw_params_t *obj)
frees a previously allocated snd_pcm_sw_params_t
Definition: pcm.c:6142
snd_pcm_hw_params_set_periods_last
int snd_pcm_hw_params_set_periods_last(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir)
Restrict a configuration space to contain only its maximum periods count.
Definition: pcm.c:5437
snd_timestamp_t
struct timeval snd_timestamp_t
Definition: global.h:151
snd_pcm_hw_params
int snd_pcm_hw_params(snd_pcm_t *pcm, snd_pcm_hw_params_t *params)
Install one PCM hardware configuration chosen from a configuration space and snd_pcm_prepare it...
Definition: pcm.c:903
snd_pcm_format_physical_width
int snd_pcm_format_physical_width(snd_pcm_format_t format)
Return bits needed to store a PCM sample.
Definition: pcm_misc.c:277
snd_pcm_hw_params_test_period_time
int snd_pcm_hw_params_test_period_time(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int val, int dir)
Verify if a period time is available inside a configuration space for a PCM.
Definition: pcm.c:4894
SND_CHMAP_RR
Definition: pcm.h:565
SND_PCM_SUBCLASS_GENERIC_MIX
Definition: pcm.h:94
snd_pcm_hw_params_set_periods_max
int snd_pcm_hw_params_set_periods_max(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir)
Restrict a configuration space with a maximum periods count.
Definition: pcm.c:5364
SND_PCM_FORMAT_A_LAW
Definition: pcm.h:171
SND_CHMAP_TRC
Definition: pcm.h:586
snd_pcm_hook_func_t
int(* snd_pcm_hook_func_t)(snd_pcm_hook_t *hook)
Definition: pcm.h:1182
snd_pcm_pause
int snd_pcm_pause(snd_pcm_t *pcm, int enable)
Pause/resume PCM.
Definition: pcm.c:1306
snd_pcm_audio_tstamp_report_t
Definition: pcm.h:359
snd_pcm_hw_params_set_buffer_time_minmax
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)
Restrict a configuration space to have buffer times in a given range.
Definition: pcm.c:5581
snd_pcm_hw_params_set_buffer_size_max
int snd_pcm_hw_params_set_buffer_size_max(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_uframes_t *val)
Restrict a configuration space with a maximum buffer size.
Definition: pcm.c:5754
snd_pcm_hw_free
int snd_pcm_hw_free(snd_pcm_t *pcm)
Remove PCM hardware configuration and free associated resources.
Definition: pcm.c:918
snd_pcm_sw_params
int snd_pcm_sw_params(snd_pcm_t *pcm, snd_pcm_sw_params_t *params)
Install PCM software configuration defined by params.
Definition: pcm.c:948
snd_pcm_subformat_mask_malloc
int snd_pcm_subformat_mask_malloc(snd_pcm_subformat_mask_t **ptr)
allocate an empty snd_pcm_subformat_mask_t using standard malloc
Definition: pcm.c:3950
snd_pcm_channel_area_t::step
unsigned int step
Definition: pcm.h:474
SND_PCM_FORMAT_S32_LE
Definition: pcm.h:149
snd_pcm_hw_params_set_periods_minmax
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)
Restrict a configuration space to have periods counts in a given range.
Definition: pcm.c:5381
snd_pcm_dump
int snd_pcm_dump(snd_pcm_t *pcm, snd_output_t *out)
Dump PCM info.
Definition: pcm.c:2277
snd_pcm_chmap_from_string
unsigned int snd_pcm_chmap_from_string(const char *str)
Definition: pcm.c:8209
snd_pcm_info_get_device
unsigned int snd_pcm_info_get_device(const snd_pcm_info_t *obj)
Get device from a PCM info container.
Definition: pcm.c:6926
snd_pcm_hw_params_set_period_size_integer
int snd_pcm_hw_params_set_period_size_integer(snd_pcm_t *pcm, snd_pcm_hw_params_t *params)
Restrict a configuration space to contain only integer period sizes.
Definition: pcm.c:5249
snd_pcm_link
int snd_pcm_link(snd_pcm_t *pcm1, snd_pcm_t *pcm2)
Link two PCMs.
Definition: pcm.c:1613
snd_pcm_hw_params_set_buffer_time_near
int snd_pcm_hw_params_set_buffer_time_near(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir)
Restrict a configuration space to have buffer time nearest to a target.
Definition: pcm.c:5599
SND_PCM_FORMAT_U20_3LE
Definition: pcm.h:201
snd_pcm_access_name
const char * snd_pcm_access_name(const snd_pcm_access_t _access)
get name of PCM access type
Definition: pcm.c:2013
SND_PCM_FORMAT_S20_3LE
Definition: pcm.h:197
SND_CHMAP_SR
Definition: pcm.h:569
snd_pcm_subformat_name
const char * snd_pcm_subformat_name(const snd_pcm_subformat_t subformat)
get name of PCM sample subformat
Definition: pcm.c:2076
snd_pcm_hw_params_set_buffer_time
int snd_pcm_hw_params_set_buffer_time(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int val, int dir)
Restrict a configuration space to contain only one buffer time.
Definition: pcm.c:5534
snd_pcm_subformat_mask_test
int snd_pcm_subformat_mask_test(const snd_pcm_subformat_mask_t *mask, snd_pcm_subformat_t val)
test the presence of a subformat in a snd_pcm_subformat_mask_t
Definition: pcm.c:4002
SND_PCM_TYPE_MULTI
Definition: pcm.h:404
snd_pcm_unlink
int snd_pcm_unlink(snd_pcm_t *pcm)
Remove a PCM from a linked group.
Definition: pcm.c:1627
snd_pcm_reset
int snd_pcm_reset(snd_pcm_t *pcm)
Reset PCM position.
Definition: pcm.c:1191
snd_pcm_sw_params_copy
void snd_pcm_sw_params_copy(snd_pcm_sw_params_t *dst, const snd_pcm_sw_params_t *src)
copy one snd_pcm_sw_params_t to another
Definition: pcm.c:6152
SND_PCM_TYPE_MMAP_EMUL
Definition: pcm.h:460
snd_pcm_info_malloc
int snd_pcm_info_malloc(snd_pcm_info_t **ptr)
allocate an invalid snd_pcm_info_t using standard malloc
Definition: pcm.c:6892
snd_pcm_chmap_parse_string
snd_pcm_chmap_t * snd_pcm_chmap_parse_string(const char *str)
Definition: pcm.c:8221
SND_CHMAP_BC
Definition: pcm.h:593
snd_pcm_mmap_readn
snd_pcm_sframes_t snd_pcm_mmap_readn(snd_pcm_t *pcm, void **bufs, snd_pcm_uframes_t size)
Read non interleaved frames to a PCM using direct buffer (mmap)
Definition: pcm_mmap.c:224
snd_pcm_hw_params_get_period_time_max
int snd_pcm_hw_params_get_period_time_max(const snd_pcm_hw_params_t *params, unsigned int *val, int *dir)
Extract maximum period time from a configuration space.
Definition: pcm.c:4878
snd_pcm_hw_params_set_period_time_max
int snd_pcm_hw_params_set_period_time_max(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir)
Restrict a configuration space with a maximum period time.
Definition: pcm.c:4940
snd_pcm_sync_id_t
Definition: pcm.h:478
snd_pcm_format_name
const char * snd_pcm_format_name(const snd_pcm_format_t format)
get name of PCM sample format
Definition: pcm.c:2025
snd_pcm_hw_params_set_channels_min
int snd_pcm_hw_params_set_channels_min(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val)
Restrict a configuration space with a minimum channels count.
Definition: pcm.c:4448
snd_pcm_hw_params_get_format
int snd_pcm_hw_params_get_format(const snd_pcm_hw_params_t *params, snd_pcm_format_t *val)
Extract format from a configuration space.
Definition: pcm.c:4193
snd_pcm_build_linear_format
snd_pcm_format_t snd_pcm_build_linear_format(int width, int pwidth, int unsignd, int big_endian)
Compose a PCM sample linear format.
Definition: pcm_misc.c:716
snd_pcm_status_copy
void snd_pcm_status_copy(snd_pcm_status_t *dst, const snd_pcm_status_t *src)
copy one snd_pcm_status_t to another
Definition: pcm.c:6702
snd_pcm_hook_add
int snd_pcm_hook_add(snd_pcm_hook_t **hookp, snd_pcm_t *pcm, snd_pcm_hook_type_t type, snd_pcm_hook_func_t func, void *private_data)
Add a PCM hook at end of hooks chain.
Definition: pcm_hooks.c:600
snd_pcm_hw_params_can_overrange
int snd_pcm_hw_params_can_overrange(const snd_pcm_hw_params_t *params)
Check if hardware supports overrange detection.
Definition: pcm.c:3476
SND_PCM_START_DATA
Definition: pcm.h:318
snd_pcm_hw_params_is_batch
int snd_pcm_hw_params_is_batch(const snd_pcm_hw_params_t *params)
Check if hardware does double buffering for data transfers for given configuration.
Definition: pcm.c:3416
SND_PCM_FORMAT_FLOAT_LE
Definition: pcm.h:157
snd_pcm_hw_params_get_min_align
int snd_pcm_hw_params_get_min_align(const snd_pcm_hw_params_t *params, snd_pcm_uframes_t *val)
Get the minimum transfer align value in samples.
Definition: pcm.c:6039
snd_async_add_pcm_handler
int snd_async_add_pcm_handler(snd_async_handler_t **handler, snd_pcm_t *pcm, snd_async_callback_t callback, void *private_data)
Add an async handler for a PCM.
Definition: pcm.c:2359
snd_pcm_hw_params_set_tick_time_min
int snd_pcm_hw_params_set_tick_time_min(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir) __attribute__((deprecated))
(DEPRECATED) Restrict a configuration space with a minimum tick time
Definition: pcm.c:5939
SND_CHMAP_FL
Definition: pcm.h:562
snd_pcm_info_get_subdevices_avail
unsigned int snd_pcm_info_get_subdevices_avail(const snd_pcm_info_t *obj)
Get available subdevices count from a PCM info container.
Definition: pcm.c:7036
snd_pcm_format_mask_empty
int snd_pcm_format_mask_empty(const snd_pcm_format_mask_t *mask)
test, if given a snd_pcm_format_mask_t is empty
Definition: pcm.c:3910
snd_pcm_recover
int snd_pcm_recover(snd_pcm_t *pcm, int err, int silent)
Recover the stream state from an error or suspend.
Definition: pcm.c:8411
snd_pcm_tstamp_t
snd_pcm_tstamp_t
Definition: pcm.h:334
snd_spcm_init_duplex
int snd_spcm_init_duplex(snd_pcm_t *playback_pcm, snd_pcm_t *capture_pcm, unsigned int rate, unsigned int channels, snd_pcm_format_t format, snd_pcm_subformat_t subformat, snd_spcm_latency_t latency, snd_pcm_access_t _access, snd_spcm_xrun_type_t xrun_type, snd_spcm_duplex_type_t duplex_type)
Initialize simple PCMs in the duplex mode.
Definition: pcm_simple.c:209
SND_PCM_FORMAT_S20_BE
Definition: pcm.h:181
snd_pcm_hw_params_set_periods_near
int snd_pcm_hw_params_set_periods_near(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir)
Restrict a configuration space to have periods count nearest to a target.
Definition: pcm.c:5399
snd_pcm_chmap_position
snd_pcm_chmap_position
Definition: pcm.h:558
snd_pcm_format_mask_t
struct _snd_pcm_format_mask snd_pcm_format_mask_t
Definition: pcm.h:73
SND_PCM_FORMAT_U20
Definition: pcm.h:254
snd_pcm_channel_area_t::first
unsigned int first
Definition: pcm.h:472
snd_pcm_hw_params_set_channels_first
int snd_pcm_hw_params_set_channels_first(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val)
Restrict a configuration space to contain only its minimum channels count.
Definition: pcm.c:4504
snd_pcm_hw_params_set_buffer_time_min
int snd_pcm_hw_params_set_buffer_time_min(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir)
Restrict a configuration space with a minimum buffer time.
Definition: pcm.c:5549
snd_config_t
struct _snd_config snd_config_t
Internal structure for a configuration node object.
Definition: conf.h:69
snd_pcm_hw_params_set_periods
int snd_pcm_hw_params_set_periods(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int val, int dir)
Restrict a configuration space to contain only one periods count.
Definition: pcm.c:5334
snd_pcm_hw_params_any
int snd_pcm_hw_params_any(snd_pcm_t *pcm, snd_pcm_hw_params_t *params)
Fill params with a full configuration space for a PCM.
Definition: pcm.c:3725
snd_pcm_scope_set_callback_private
void snd_pcm_scope_set_callback_private(snd_pcm_scope_t *scope, void *val)
Get callbacks private value for a SND_PCM_TYPE_METER PCM scope.
Definition: pcm_meter.c:989
snd_pcm_hw_params_get_period_time_min
int snd_pcm_hw_params_get_period_time_min(const snd_pcm_hw_params_t *params, unsigned int *val, int *dir)
Extract minimum period time from a configuration space.
Definition: pcm.c:4860
SND_PCM_TSTAMP_MMAP
Definition: pcm.h:342
snd_pcm_subformat_mask_none
void snd_pcm_subformat_mask_none(snd_pcm_subformat_mask_t *mask)
reset all bits in a snd_pcm_subformat_mask_t
Definition: pcm.c:3983
snd_pcm_sw_params_set_silence_size
int snd_pcm_sw_params_set_silence_size(snd_pcm_t *pcm, snd_pcm_sw_params_t *params, snd_pcm_uframes_t val)
Set silence size inside a software configuration container.
Definition: pcm.c:6630
SND_PCM_TSTAMP_TYPE_MONOTONIC
Definition: pcm.h:348
snd_pcm_forward
snd_pcm_sframes_t snd_pcm_forward(snd_pcm_t *pcm, snd_pcm_uframes_t frames)
Move application frame position forward.
Definition: pcm.c:1426
SND_PCM_FORMAT_S18_3BE
Definition: pcm.h:207
SND_PCM_FORMAT_U20_LE
Definition: pcm.h:183
snd_pcm_hw_params_set_period_size_last
int 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)
Restrict a configuration space to contain only its maximum period size.
Definition: pcm.c:5233
snd_pcm_sw_params_get_sleep_min
int snd_pcm_sw_params_get_sleep_min(const snd_pcm_sw_params_t *params, unsigned int *val) __attribute__((deprecated))
(DEPRECATED) Get minimum numbers of ticks to sleep from a software configuration container ...
Definition: pcm.c:6358
SND_CHMAP_FRC
Definition: pcm.h:572
SND_PCM_TYPE_DROUTE
Definition: pcm.h:436
snd_pcm_sw_params_set_start_mode
int snd_pcm_sw_params_set_start_mode(snd_pcm_t *pcm, snd_pcm_sw_params_t *params, snd_pcm_start_t val) __attribute__((deprecated))
(DEPRECATED) Set start mode inside a software configuration container
Definition: pcm.c:6178
snd_pcm_frames_to_bytes
ssize_t snd_pcm_frames_to_bytes(snd_pcm_t *pcm, snd_pcm_sframes_t frames)
Convert frames in bytes for a PCM.
Definition: pcm.c:2307
snd_pcm_sw_params_set_silence_threshold
int snd_pcm_sw_params_set_silence_threshold(snd_pcm_t *pcm, snd_pcm_sw_params_t *params, snd_pcm_uframes_t val)
Set silence threshold inside a software configuration container.
Definition: pcm.c:6576
SND_CHMAP_TYPE_VAR
Definition: pcm.h:552
snd_pcm_hw_params_set_format_mask
int snd_pcm_hw_params_set_format_mask(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_format_mask_t *mask)
Restrict a configuration space to contain only a set of formats.
Definition: pcm.c:4262
SND_PCM_XRUN_NONE
Definition: pcm.h:327
snd_pcm_hw_params_set_period_time_near
int snd_pcm_hw_params_set_period_time_near(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir)
Restrict a configuration space to have period time nearest to a target.
Definition: pcm.c:4975
snd_pcm_hw_params_set_access
int snd_pcm_hw_params_set_access(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_access_t _access)
Restrict a configuration space to contain only one access type.
Definition: pcm.c:4121
snd_pcm_sw_params_get_period_event
int snd_pcm_sw_params_get_period_event(const snd_pcm_sw_params_t *params, int *val)
Get period event from a software configuration container.
Definition: pcm.c:6435
snd_pcm_hw_params_test_channels
int snd_pcm_hw_params_test_channels(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int val)
Verify if a channels count is available inside a configuration space for a PCM.
Definition: pcm.c:4424
snd_pcm_meter_get_rate
unsigned int snd_pcm_meter_get_rate(snd_pcm_t *pcm)
Get meter rate from a SND_PCM_TYPE_METER PCM.
Definition: pcm_meter.c:907
snd_pcm_status_set_audio_htstamp_config
void snd_pcm_status_set_audio_htstamp_config(snd_pcm_status_t *obj, snd_pcm_audio_tstamp_config_t *audio_tstamp_config)
set audio_tstamp_config from a PCM status container
Definition: pcm.c:6825
snd_pcm_hw_params_set_channels_near
int snd_pcm_hw_params_set_channels_near(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val)
Restrict a configuration space to have channels count nearest to a target.
Definition: pcm.c:4488
snd_pcm_hw_params_get_sbits
int snd_pcm_hw_params_get_sbits(const snd_pcm_hw_params_t *params)
Get sample resolution info from a configuration space.
Definition: pcm.c:3688
snd_pcm_area_silence
int snd_pcm_area_silence(const snd_pcm_channel_area_t *dst_channel, snd_pcm_uframes_t dst_offset, unsigned int samples, snd_pcm_format_t format)
Silence an area.
Definition: pcm.c:2942
snd_pcm_hw_params_set_period_time_last
int snd_pcm_hw_params_set_period_time_last(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir)
Restrict a configuration space to contain only its maximum period time.
Definition: pcm.c:5011
snd_pcm_info_get_name
const char * snd_pcm_info_get_name(const snd_pcm_info_t *obj)
Get name from a PCM info container.
Definition: pcm.c:6981
snd_spcm_latency_t
snd_spcm_latency_t
Definition: pcm.h:1261
SND_PCM_FORMAT_U16_LE
Definition: pcm.h:137
snd_pcm_open
int snd_pcm_open(snd_pcm_t **pcm, const char *name, snd_pcm_stream_t stream, int mode)
Opens a PCM.
Definition: pcm.c:2587
snd_pcm_poll_descriptors
int snd_pcm_poll_descriptors(snd_pcm_t *pcm, struct pollfd *pfds, unsigned int space)
get poll descriptors
Definition: pcm.c:1708
SND_CHMAP_TRL
Definition: pcm.h:584
snd_pcm_sw_params_set_start_threshold
int snd_pcm_sw_params_set_start_threshold(snd_pcm_t *pcm, snd_pcm_sw_params_t *params, snd_pcm_uframes_t val)
Set start threshold inside a software configuration container.
Definition: pcm.c:6487
SND_PCM_FORMAT_U20_BE
Definition: pcm.h:185
SND_PCM_STATE_OPEN
Definition: pcm.h:293
snd_pcm_access_mask_reset
void snd_pcm_access_mask_reset(snd_pcm_access_mask_t *mask, snd_pcm_access_t val)
make an access type missing from a snd_pcm_access_mask_t
Definition: pcm.c:3828
snd_pcm_hw_params_get_channels_max
int snd_pcm_hw_params_get_channels_max(const snd_pcm_hw_params_t *params, unsigned int *val)
Extract maximum channels count from a configuration space.
Definition: pcm.c:4411
snd_pcm_access_mask_test
int snd_pcm_access_mask_test(const snd_pcm_access_mask_t *mask, snd_pcm_access_t val)
test the presence of an access type in a snd_pcm_access_mask_t
Definition: pcm.c:3797
snd_pcm_writei
snd_pcm_sframes_t snd_pcm_writei(snd_pcm_t *pcm, const void *buffer, snd_pcm_uframes_t size)
Write interleaved frames to a PCM.
Definition: pcm.c:1468
snd_pcm_hw_params_get_buffer_size_min
int snd_pcm_hw_params_get_buffer_size_min(const snd_pcm_hw_params_t *params, snd_pcm_uframes_t *val)
Extract minimum buffer size from a configuration space.
Definition: pcm.c:5672
snd_pcm_hw_params_is_monotonic
int snd_pcm_hw_params_is_monotonic(const snd_pcm_hw_params_t *params)
Check if timestamps are monotonic for given configuration.
Definition: pcm.c:3456
SND_CHMAP_TYPE_FIXED
Definition: pcm.h:551
snd_pcm_status_get_audio_htstamp
void snd_pcm_status_get_audio_htstamp(const snd_pcm_status_t *obj, snd_htimestamp_t *ptr)
Get &quot;now&quot; hi-res audio timestamp from a PCM status container.
Definition: pcm.c:6788
snd_pcm_hw_params_set_rate_minmax
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)
Restrict a configuration space to have rates in a given range.
Definition: pcm.c:4653
snd_pcm_sw_params_get_silence_size
int snd_pcm_sw_params_get_silence_size(const snd_pcm_sw_params_t *params, snd_pcm_uframes_t *val)
Get silence size from a software configuration container.
Definition: pcm.c:6656
snd_pcm_mmap_commit
snd_pcm_sframes_t snd_pcm_mmap_commit(snd_pcm_t *pcm, snd_pcm_uframes_t offset, snd_pcm_uframes_t frames)
Application has completed the access to area requested with snd_pcm_mmap_begin.
Definition: pcm.c:7207
snd_pcm_format_little_endian
int snd_pcm_format_little_endian(snd_pcm_format_t format)
Return endian info for a PCM sample format.
Definition: pcm_misc.c:128
snd_pcm_hw_params_current
int snd_pcm_hw_params_current(snd_pcm_t *pcm, snd_pcm_hw_params_t *params)
Retreive current PCM hardware configuration chosen with snd_pcm_hw_params.
Definition: pcm.c:852
snd_pcm_uframes_t
unsigned long snd_pcm_uframes_t
Definition: pcm.h:374
snd_pcm_status_get_avail
snd_pcm_uframes_t snd_pcm_status_get_avail(const snd_pcm_status_t *obj)
Get number of frames available from a PCM status container (see snd_pcm_avail_update) ...
Definition: pcm.c:6852
snd_pcm_get_chmap
snd_pcm_chmap_t * snd_pcm_get_chmap(snd_pcm_t *pcm)
Definition: pcm.c:7991
snd_pcm_format_mask_test
int snd_pcm_format_mask_test(const snd_pcm_format_mask_t *mask, snd_pcm_format_t val)
test the presence of a format in a snd_pcm_format_mask_t
Definition: pcm.c:3899
snd_pcm_mmap_writen
snd_pcm_sframes_t snd_pcm_mmap_writen(snd_pcm_t *pcm, void **bufs, snd_pcm_uframes_t size)
Write non interleaved frames to a PCM using direct buffer (mmap)
Definition: pcm_mmap.c:174
SND_CHMAP_FRW
Definition: pcm.h:576
SND_PCM_XRUN_STOP
Definition: pcm.h:329
SND_PCM_TSTAMP_TYPE_MONOTONIC_RAW
Definition: pcm.h:349
snd_pcm_hw_params_set_channels_minmax
int snd_pcm_hw_params_set_channels_minmax(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *min, unsigned int *max)
Restrict a configuration space to have channels counts in a given range.
Definition: pcm.c:4473
snd_pcm_hw_params_get_period_size_max
int snd_pcm_hw_params_get_period_size_max(const snd_pcm_hw_params_t *params, snd_pcm_uframes_t *frames, int *dir)
Extract maximum period size from a configuration space.
Definition: pcm.c:5074
SND_PCM_FORMAT_S8
Definition: pcm.h:129
snd_pcm_hw_params_set_period_time_minmax
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)
Restrict a configuration space to have period times in a given range.
Definition: pcm.c:4957
snd_pcm_hw_params_get_channels
int snd_pcm_hw_params_get_channels(const snd_pcm_hw_params_t *params, unsigned int *val)
Extract channels from a configuration space.
Definition: pcm.c:4381
snd_pcm_subformat_description
const char * snd_pcm_subformat_description(const snd_pcm_subformat_t subformat)
get description of PCM sample subformat
Definition: pcm.c:2088
snd_pcm_query_chmaps_from_hw
snd_pcm_chmap_query_t ** snd_pcm_query_chmaps_from_hw(int card, int dev, int subdev, snd_pcm_stream_t stream)
Definition: pcm_hw.c:1200
ptr
void * ptr
Definition: seq_event.h:199
snd_pcm_hw_params_is_double
int snd_pcm_hw_params_is_double(const snd_pcm_hw_params_t *params)
Check if hardware does double buffering for start/stop for given configuration.
Definition: pcm.c:3396
snd_pcm_hw_params_set_tick_time_last
int snd_pcm_hw_params_set_tick_time_last(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir) __attribute__((deprecated))
(DEPRECATED) Restrict a configuration space to contain only its maximum tick time ...
Definition: pcm.c:6027
snd_pcm_sw_params_get_silence_threshold
int snd_pcm_sw_params_get_silence_threshold(const snd_pcm_sw_params_t *params, snd_pcm_uframes_t *val)
Get silence threshold from a software configuration container.
Definition: pcm.c:6602
SND_PCM_FORMAT_IEC958_SUBFRAME_BE
Definition: pcm.h:167
snd_pcm_avail_delay
int snd_pcm_avail_delay(snd_pcm_t *pcm, snd_pcm_sframes_t *availp, snd_pcm_sframes_t *delayp)
Combine snd_pcm_avail and snd_pcm_delay functions.
Definition: pcm.c:2903
snd_pcm_hw_params_get_periods_max
int snd_pcm_hw_params_get_periods_max(const snd_pcm_hw_params_t *params, unsigned int *val, int *dir)
Extract maximum periods count from a configuration space.
Definition: pcm.c:5303
snd_pcm_hw_params_set_period_size_near
int 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)
Restrict a configuration space to have period size nearest to a target.
Definition: pcm.c:5187
snd_pcm_poll_descriptors_revents
int snd_pcm_poll_descriptors_revents(snd_pcm_t *pcm, struct pollfd *pfds, unsigned int nfds, unsigned short *revents)
get returned events from poll descriptors
Definition: pcm.c:1743
SND_PCM_SUBCLASS_MULTI_MIX
Definition: pcm.h:96
snd_pcm_readi
snd_pcm_sframes_t snd_pcm_readi(snd_pcm_t *pcm, void *buffer, snd_pcm_uframes_t size)
Read interleaved frames from a PCM.
Definition: pcm.c:1546
snd_pcm_dump_sw_setup
int snd_pcm_dump_sw_setup(snd_pcm_t *pcm, snd_output_t *out)
Dump current software setup for PCM.
Definition: pcm.c:2216
snd_pcm_format_mask_copy
void snd_pcm_format_mask_copy(snd_pcm_format_mask_t *dst, const snd_pcm_format_mask_t *src)
copy one snd_pcm_format_mask_t to another
Definition: pcm.c:3870
snd_pcm_hw_params_set_rate
int snd_pcm_hw_params_set_rate(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int val, int dir)
Restrict a configuration space to contain only one rate.
Definition: pcm.c:4606
snd_pcm_format_value
snd_pcm_format_t snd_pcm_format_value(const char *name)
get PCM sample format from name
Definition: pcm.c:2049
SND_PCM_FORMAT_FLOAT64
Definition: pcm.h:248
SND_CHMAP_MONO
Definition: pcm.h:561
snd_pcm_stream_t
snd_pcm_stream_t
Definition: pcm.h:101
snd_pcm_sw_params_set_period_event
int snd_pcm_sw_params_set_period_event(snd_pcm_t *pcm, snd_pcm_sw_params_t *params, int val)
Set period event inside a software configuration container.
Definition: pcm.c:6422
snd_pcm_sw_params_set_tstamp_type
int snd_pcm_sw_params_set_tstamp_type(snd_pcm_t *pcm, snd_pcm_sw_params_t *params, snd_pcm_tstamp_type_t val)
Set timestamp type inside a software configuration container.
Definition: pcm.c:6309
snd_pcm_format_big_endian
int snd_pcm_format_big_endian(snd_pcm_format_t format)
Return endian info for a PCM sample format.
Definition: pcm_misc.c:181
snd_pcm_open_fallback
int snd_pcm_open_fallback(snd_pcm_t **pcm, snd_config_t *root, const char *name, const char *orig_name, snd_pcm_stream_t stream, int mode)
Opens a fallback PCM.
Definition: pcm.c:2629
SND_PCM_FORMAT_GSM
Definition: pcm.h:177
snd_pcm_hw_params_set_subformat_first
int snd_pcm_hw_params_set_subformat_first(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_subformat_t *subformat)
Restrict a configuration space to contain only its first subformat.
Definition: pcm.c:4327
snd_pcm_hw_params_set_buffer_time_last
int snd_pcm_hw_params_set_buffer_time_last(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir)
Restrict a configuration space to contain only its maximum buffered time.
Definition: pcm.c:5637
SND_CHMAP_RL
Definition: pcm.h:564
SND_CHMAP_BRC
Definition: pcm.h:595
SND_CHMAP_FC
Definition: pcm.h:566
snd_pcm_hw_params_can_disable_period_wakeup
int snd_pcm_hw_params_can_disable_period_wakeup(const snd_pcm_hw_params_t *params)
Check if hardware can disable period wakeups.
Definition: pcm.c:3592
SND_PCM_TYPE_DSNOOP
Definition: pcm.h:448
snd_pcm_type_t
enum _snd_pcm_type snd_pcm_type_t
Definition: pcm.h:465
SND_CHMAP_TFLC
Definition: pcm.h:587
snd_pcm_scope_ops_t
Definition: pcm.h:1201
SND_SPCM_LATENCY_STANDARD
Definition: pcm.h:1264
snd_pcm_info_copy
void snd_pcm_info_copy(snd_pcm_info_t *dst, const snd_pcm_info_t *src)
copy one snd_pcm_info_t to another
Definition: pcm.c:6915
snd_pcm_sw_params_sizeof
size_t snd_pcm_sw_params_sizeof(void)
get size of snd_pcm_sw_params_t
Definition: pcm.c:6119
snd_pcm_area_copy
int snd_pcm_area_copy(const snd_pcm_channel_area_t *dst_channel, snd_pcm_uframes_t dst_offset, const snd_pcm_channel_area_t *src_channel, snd_pcm_uframes_t src_offset, unsigned int samples, snd_pcm_format_t format)
Copy an area.
Definition: pcm.c:3108
snd_pcm_info_set_subdevice
void snd_pcm_info_set_subdevice(snd_pcm_info_t *obj, unsigned int val)
Set wanted subdevice inside a PCM info container (see snd_ctl_pcm_info)
Definition: pcm.c:7071
SND_CHMAP_RRC
Definition: pcm.h:574
snd_pcm_hw_params_supports_audio_wallclock_ts
int snd_pcm_hw_params_supports_audio_wallclock_ts(const snd_pcm_hw_params_t *params)
Check if hardware supports audio wallclock timestamps.
Definition: pcm.c:3612
SND_CHMAP_FLH
Definition: pcm.h:577
snd_pcm_t
struct _snd_pcm snd_pcm_t
Definition: pcm.h:394
snd_pcm_hw_params_get_buffer_time_min
int snd_pcm_hw_params_get_buffer_time_min(const snd_pcm_hw_params_t *params, unsigned int *val, int *dir)
Extract minimum buffer time from a configuration space.
Definition: pcm.c:5485
snd_pcm_hw_params_get_access_mask
int snd_pcm_hw_params_get_access_mask(snd_pcm_hw_params_t *params, snd_pcm_access_mask_t *mask)
Get access mask from a configuration space.
Definition: pcm.c:4175
snd_pcm_samples_to_bytes
ssize_t snd_pcm_samples_to_bytes(snd_pcm_t *pcm, long samples)
Convert samples in bytes for a PCM.
Definition: pcm.c:2339
snd_pcm_hw_params_test_period_size
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)
Verify if a period size is available inside a configuration space for a PCM.
Definition: pcm.c:5094
snd_pcm_chmap_t::channels
unsigned int channels
Definition: pcm.h:609
snd_pcm_status_get_delay
snd_pcm_sframes_t snd_pcm_status_get_delay(const snd_pcm_status_t *obj)
Get delay from a PCM status container (see snd_pcm_delay)
Definition: pcm.c:6842
snd_pcm_status_get_audio_htstamp_report
void snd_pcm_status_get_audio_htstamp_report(const snd_pcm_status_t *obj, snd_pcm_audio_tstamp_report_t *audio_tstamp_report)
Get audio_tstamp_report from a PCM status container.
Definition: pcm.c:6811
snd_pcm_rewind
snd_pcm_sframes_t snd_pcm_rewind(snd_pcm_t *pcm, snd_pcm_uframes_t frames)
Move application frame position backward.
Definition: pcm.c:1363
snd_pcm_sw_params_get_xrun_mode
snd_pcm_xrun_t snd_pcm_sw_params_get_xrun_mode(const snd_pcm_sw_params_t *params) __attribute__((deprecated))
(DEPRECATED) Get xrun mode from a software configuration container
Definition: pcm.c:6252
snd_pcm_access_mask_malloc
int snd_pcm_access_mask_malloc(snd_pcm_access_mask_t **ptr)
allocate an empty snd_pcm_access_mask_t using standard malloc
Definition: pcm.c:3745
SND_PCM_FORMAT_FLOAT_BE
Definition: pcm.h:159
snd_pcm_format_linear
int snd_pcm_format_linear(snd_pcm_format_t format)
Return linear info for a PCM sample format.
Definition: pcm_misc.c:100
snd_pcm_sw_params_malloc
int snd_pcm_sw_params_malloc(snd_pcm_sw_params_t **ptr)
allocate an invalid snd_pcm_sw_params_t using standard malloc
Definition: pcm.c:6129
snd_pcm_hw_params_set_period_size
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)
Restrict a configuration space to contain only one period size.
Definition: pcm.c:5109
snd_pcm_access_t
snd_pcm_access_t
Definition: pcm.h:110
snd_pcm_hw_params_set_period_size_first
int 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)
Restrict a configuration space to contain only its minimum period size.
Definition: pcm.c:5210
SND_PCM_ACCESS_MMAP_COMPLEX
Definition: pcm.h:116
snd_pcm_sw_params_get_start_threshold
int snd_pcm_sw_params_get_start_threshold(const snd_pcm_sw_params_t *paramsm, snd_pcm_uframes_t *val)
Get start threshold from a software configuration container.
Definition: pcm.c:6507
SND_PCM_TYPE_ADPCM
Definition: pcm.h:422
snd_pcm_state_name
const char * snd_pcm_state_name(const snd_pcm_state_t state)
get name of PCM state
Definition: pcm.c:2156