ALSA project - the C library reference
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_UNKNOWN = -1,
288  SND_PCM_SUBFORMAT_STD = 0,
290  SND_PCM_SUBFORMAT_MSBITS_MAX = 1,
292  SND_PCM_SUBFORMAT_MSBITS_20 = 2,
294  SND_PCM_SUBFORMAT_MSBITS_24 = 3,
295  SND_PCM_SUBFORMAT_LAST = SND_PCM_SUBFORMAT_MSBITS_24
296 } snd_pcm_subformat_t;
297 
299 typedef enum _snd_pcm_state {
301  SND_PCM_STATE_OPEN = 0,
303  SND_PCM_STATE_SETUP,
305  SND_PCM_STATE_PREPARED,
307  SND_PCM_STATE_RUNNING,
309  SND_PCM_STATE_XRUN,
311  SND_PCM_STATE_DRAINING,
313  SND_PCM_STATE_PAUSED,
315  SND_PCM_STATE_SUSPENDED,
317  SND_PCM_STATE_DISCONNECTED,
318  SND_PCM_STATE_LAST = SND_PCM_STATE_DISCONNECTED,
320  SND_PCM_STATE_PRIVATE1 = 1024
321 } snd_pcm_state_t;
322 
324 typedef enum _snd_pcm_start {
326  SND_PCM_START_DATA = 0,
328  SND_PCM_START_EXPLICIT,
329  SND_PCM_START_LAST = SND_PCM_START_EXPLICIT
330 } snd_pcm_start_t;
331 
333 typedef enum _snd_pcm_xrun {
335  SND_PCM_XRUN_NONE = 0,
337  SND_PCM_XRUN_STOP,
338  SND_PCM_XRUN_LAST = SND_PCM_XRUN_STOP
339 } snd_pcm_xrun_t;
340 
342 typedef enum _snd_pcm_tstamp {
344  SND_PCM_TSTAMP_NONE = 0,
346  SND_PCM_TSTAMP_ENABLE,
350  SND_PCM_TSTAMP_MMAP = SND_PCM_TSTAMP_ENABLE,
351  SND_PCM_TSTAMP_LAST = SND_PCM_TSTAMP_ENABLE
352 } snd_pcm_tstamp_t;
353 
355 typedef enum _snd_pcm_tstamp_type {
356  SND_PCM_TSTAMP_TYPE_GETTIMEOFDAY = 0,
357  SND_PCM_TSTAMP_TYPE_MONOTONIC,
358  SND_PCM_TSTAMP_TYPE_MONOTONIC_RAW,
359  SND_PCM_TSTAMP_TYPE_LAST = SND_PCM_TSTAMP_TYPE_MONOTONIC_RAW,
360 } snd_pcm_tstamp_type_t;
361 
363 typedef enum _snd_pcm_audio_tstamp_type {
368  SND_PCM_AUDIO_TSTAMP_TYPE_COMPAT = 0,
369  SND_PCM_AUDIO_TSTAMP_TYPE_DEFAULT = 1,
370  SND_PCM_AUDIO_TSTAMP_TYPE_LINK = 2,
371  SND_PCM_AUDIO_TSTAMP_TYPE_LINK_ABSOLUTE = 3,
372  SND_PCM_AUDIO_TSTAMP_TYPE_LINK_ESTIMATED = 4,
373  SND_PCM_AUDIO_TSTAMP_TYPE_LINK_SYNCHRONIZED = 5,
374  SND_PCM_AUDIO_TSTAMP_TYPE_LAST = SND_PCM_AUDIO_TSTAMP_TYPE_LINK_SYNCHRONIZED
375 } snd_pcm_audio_tstamp_type_t;
376 
378 typedef struct _snd_pcm_audio_tstamp_config {
379  /* 5 of max 16 bits used */
380  unsigned int type_requested:4;
381  unsigned int report_delay:1;
382 } snd_pcm_audio_tstamp_config_t;
383 
385 typedef struct _snd_pcm_audio_tstamp_report {
386  /* 6 of max 16 bits used for bit-fields */
387 
388  unsigned int valid:1;
389  unsigned int actual_type:4;
391  unsigned int accuracy_report:1;
392  unsigned int accuracy;
393 } snd_pcm_audio_tstamp_report_t;
394 
396 typedef unsigned long snd_pcm_uframes_t;
398 typedef long snd_pcm_sframes_t;
399 
401 #define SND_PCM_NONBLOCK 0x00000001
402 
403 #define SND_PCM_ASYNC 0x00000002
404 
405 #define SND_PCM_EINTR 0x00000080
406 
407 #define SND_PCM_ABORT 0x00008000
408 
409 #define SND_PCM_NO_AUTO_RESAMPLE 0x00010000
410 
411 #define SND_PCM_NO_AUTO_CHANNELS 0x00020000
412 
413 #define SND_PCM_NO_AUTO_FORMAT 0x00040000
414 
415 #define SND_PCM_NO_SOFTVOL 0x00080000
416 
418 typedef struct _snd_pcm snd_pcm_t;
419 
421 enum _snd_pcm_type {
423  SND_PCM_TYPE_HW = 0,
425  SND_PCM_TYPE_HOOKS,
428  SND_PCM_TYPE_MULTI,
430  SND_PCM_TYPE_FILE,
432  SND_PCM_TYPE_NULL,
434  SND_PCM_TYPE_SHM,
436  SND_PCM_TYPE_INET,
438  SND_PCM_TYPE_COPY,
440  SND_PCM_TYPE_LINEAR,
442  SND_PCM_TYPE_ALAW,
444  SND_PCM_TYPE_MULAW,
446  SND_PCM_TYPE_ADPCM,
448  SND_PCM_TYPE_RATE,
450  SND_PCM_TYPE_ROUTE,
452  SND_PCM_TYPE_PLUG,
454  SND_PCM_TYPE_SHARE,
456  SND_PCM_TYPE_METER,
458  SND_PCM_TYPE_MIX,
460  SND_PCM_TYPE_DROUTE,
462  SND_PCM_TYPE_LBSERVER,
464  SND_PCM_TYPE_LINEAR_FLOAT,
466  SND_PCM_TYPE_LADSPA,
468  SND_PCM_TYPE_DMIX,
470  SND_PCM_TYPE_JACK,
472  SND_PCM_TYPE_DSNOOP,
474  SND_PCM_TYPE_DSHARE,
476  SND_PCM_TYPE_IEC958,
478  SND_PCM_TYPE_SOFTVOL,
480  SND_PCM_TYPE_IOPLUG,
482  SND_PCM_TYPE_EXTPLUG,
484  SND_PCM_TYPE_MMAP_EMUL,
485  SND_PCM_TYPE_LAST = SND_PCM_TYPE_MMAP_EMUL
486 };
487 
489 typedef enum _snd_pcm_type snd_pcm_type_t;
490 
492 typedef struct _snd_pcm_channel_area {
494  void *addr;
496  unsigned int first;
498  unsigned int step;
499 } snd_pcm_channel_area_t;
500 
502 typedef union _snd_pcm_sync_id {
504  unsigned char id[16];
506  unsigned short id16[8];
508  unsigned int id32[4];
509 } snd_pcm_sync_id_t;
510 
512 #define SND_PCM_WAIT_INFINITE (-1)
513 
514 #define SND_PCM_WAIT_IO (-10001)
515 
516 #define SND_PCM_WAIT_DRAIN (-10002)
517 
519 typedef struct _snd_pcm_scope snd_pcm_scope_t;
520 
521 int snd_pcm_open(snd_pcm_t **pcm, const char *name,
522  snd_pcm_stream_t stream, int mode);
523 int snd_pcm_open_lconf(snd_pcm_t **pcm, const char *name,
524  snd_pcm_stream_t stream, int mode,
525  snd_config_t *lconf);
526 int snd_pcm_open_fallback(snd_pcm_t **pcm, snd_config_t *root,
527  const char *name, const char *orig_name,
528  snd_pcm_stream_t stream, int mode);
529 
530 int snd_pcm_close(snd_pcm_t *pcm);
531 const char *snd_pcm_name(snd_pcm_t *pcm);
532 snd_pcm_type_t snd_pcm_type(snd_pcm_t *pcm);
533 snd_pcm_stream_t snd_pcm_stream(snd_pcm_t *pcm);
534 int snd_pcm_poll_descriptors_count(snd_pcm_t *pcm);
535 int snd_pcm_poll_descriptors(snd_pcm_t *pcm, struct pollfd *pfds, unsigned int space);
536 int snd_pcm_poll_descriptors_revents(snd_pcm_t *pcm, struct pollfd *pfds, unsigned int nfds, unsigned short *revents);
537 int snd_pcm_nonblock(snd_pcm_t *pcm, int nonblock);
538 static __inline__ int snd_pcm_abort(snd_pcm_t *pcm) { return snd_pcm_nonblock(pcm, 2); }
539 int snd_async_add_pcm_handler(snd_async_handler_t **handler, snd_pcm_t *pcm,
540  snd_async_callback_t callback, void *private_data);
541 snd_pcm_t *snd_async_handler_get_pcm(snd_async_handler_t *handler);
542 int snd_pcm_info(snd_pcm_t *pcm, snd_pcm_info_t *info);
543 int snd_pcm_hw_params_current(snd_pcm_t *pcm, snd_pcm_hw_params_t *params);
544 int snd_pcm_hw_params(snd_pcm_t *pcm, snd_pcm_hw_params_t *params);
545 int snd_pcm_hw_free(snd_pcm_t *pcm);
546 int snd_pcm_sw_params_current(snd_pcm_t *pcm, snd_pcm_sw_params_t *params);
547 int snd_pcm_sw_params(snd_pcm_t *pcm, snd_pcm_sw_params_t *params);
548 int snd_pcm_prepare(snd_pcm_t *pcm);
549 int snd_pcm_reset(snd_pcm_t *pcm);
550 int snd_pcm_status(snd_pcm_t *pcm, snd_pcm_status_t *status);
551 int snd_pcm_start(snd_pcm_t *pcm);
552 int snd_pcm_drop(snd_pcm_t *pcm);
553 int snd_pcm_drain(snd_pcm_t *pcm);
554 int snd_pcm_pause(snd_pcm_t *pcm, int enable);
555 snd_pcm_state_t snd_pcm_state(snd_pcm_t *pcm);
556 int snd_pcm_hwsync(snd_pcm_t *pcm);
557 int snd_pcm_delay(snd_pcm_t *pcm, snd_pcm_sframes_t *delayp);
558 int snd_pcm_resume(snd_pcm_t *pcm);
559 int snd_pcm_htimestamp(snd_pcm_t *pcm, snd_pcm_uframes_t *avail, snd_htimestamp_t *tstamp);
560 snd_pcm_sframes_t snd_pcm_avail(snd_pcm_t *pcm);
561 snd_pcm_sframes_t snd_pcm_avail_update(snd_pcm_t *pcm);
562 int snd_pcm_avail_delay(snd_pcm_t *pcm, snd_pcm_sframes_t *availp, snd_pcm_sframes_t *delayp);
563 snd_pcm_sframes_t snd_pcm_rewindable(snd_pcm_t *pcm);
564 snd_pcm_sframes_t snd_pcm_rewind(snd_pcm_t *pcm, snd_pcm_uframes_t frames);
565 snd_pcm_sframes_t snd_pcm_forwardable(snd_pcm_t *pcm);
566 snd_pcm_sframes_t snd_pcm_forward(snd_pcm_t *pcm, snd_pcm_uframes_t frames);
567 snd_pcm_sframes_t snd_pcm_writei(snd_pcm_t *pcm, const void *buffer, snd_pcm_uframes_t size);
568 snd_pcm_sframes_t snd_pcm_readi(snd_pcm_t *pcm, void *buffer, snd_pcm_uframes_t size);
569 snd_pcm_sframes_t snd_pcm_writen(snd_pcm_t *pcm, void **bufs, snd_pcm_uframes_t size);
570 snd_pcm_sframes_t snd_pcm_readn(snd_pcm_t *pcm, void **bufs, snd_pcm_uframes_t size);
571 int snd_pcm_wait(snd_pcm_t *pcm, int timeout);
572 
573 int snd_pcm_link(snd_pcm_t *pcm1, snd_pcm_t *pcm2);
574 int snd_pcm_unlink(snd_pcm_t *pcm);
575 
577 #define SND_CHMAP_API_VERSION ((1 << 16) | (0 << 8) | 1)
578 
580 enum snd_pcm_chmap_type {
581  SND_CHMAP_TYPE_NONE = 0,
582  SND_CHMAP_TYPE_FIXED,
583  SND_CHMAP_TYPE_VAR,
584  SND_CHMAP_TYPE_PAIRED,
585  SND_CHMAP_TYPE_LAST = SND_CHMAP_TYPE_PAIRED,
586 };
587 
589 enum snd_pcm_chmap_position {
590  SND_CHMAP_UNKNOWN = 0,
591  SND_CHMAP_NA,
592  SND_CHMAP_MONO,
593  SND_CHMAP_FL,
594  SND_CHMAP_FR,
595  SND_CHMAP_RL,
596  SND_CHMAP_RR,
597  SND_CHMAP_FC,
598  SND_CHMAP_LFE,
599  SND_CHMAP_SL,
600  SND_CHMAP_SR,
601  SND_CHMAP_RC,
602  SND_CHMAP_FLC,
603  SND_CHMAP_FRC,
604  SND_CHMAP_RLC,
605  SND_CHMAP_RRC,
606  SND_CHMAP_FLW,
607  SND_CHMAP_FRW,
608  SND_CHMAP_FLH,
609  SND_CHMAP_FCH,
610  SND_CHMAP_FRH,
611  SND_CHMAP_TC,
612  SND_CHMAP_TFL,
613  SND_CHMAP_TFR,
614  SND_CHMAP_TFC,
615  SND_CHMAP_TRL,
616  SND_CHMAP_TRR,
617  SND_CHMAP_TRC,
618  SND_CHMAP_TFLC,
619  SND_CHMAP_TFRC,
620  SND_CHMAP_TSL,
621  SND_CHMAP_TSR,
622  SND_CHMAP_LLFE,
623  SND_CHMAP_RLFE,
624  SND_CHMAP_BC,
625  SND_CHMAP_BLC,
626  SND_CHMAP_BRC,
627  SND_CHMAP_LAST = SND_CHMAP_BRC,
628 };
629 
631 #define SND_CHMAP_POSITION_MASK 0xffff
632 
634 #define SND_CHMAP_PHASE_INVERSE (0x01 << 16)
635 
636 #define SND_CHMAP_DRIVER_SPEC (0x02 << 16)
637 
639 typedef struct snd_pcm_chmap {
640  unsigned int channels;
641  unsigned int pos[0];
642 } snd_pcm_chmap_t;
643 
645 typedef struct snd_pcm_chmap_query {
646  enum snd_pcm_chmap_type type;
647  snd_pcm_chmap_t map;
648 } snd_pcm_chmap_query_t;
649 
650 
651 snd_pcm_chmap_query_t **snd_pcm_query_chmaps(snd_pcm_t *pcm);
652 snd_pcm_chmap_query_t **snd_pcm_query_chmaps_from_hw(int card, int dev,
653  int subdev,
654  snd_pcm_stream_t stream);
655 void snd_pcm_free_chmaps(snd_pcm_chmap_query_t **maps);
656 snd_pcm_chmap_t *snd_pcm_get_chmap(snd_pcm_t *pcm);
657 int snd_pcm_set_chmap(snd_pcm_t *pcm, const snd_pcm_chmap_t *map);
658 
659 const char *snd_pcm_chmap_type_name(enum snd_pcm_chmap_type val);
660 const char *snd_pcm_chmap_name(enum snd_pcm_chmap_position val);
661 const char *snd_pcm_chmap_long_name(enum snd_pcm_chmap_position val);
662 int snd_pcm_chmap_print(const snd_pcm_chmap_t *map, size_t maxlen, char *buf);
663 unsigned int snd_pcm_chmap_from_string(const char *str);
664 snd_pcm_chmap_t *snd_pcm_chmap_parse_string(const char *str);
665 
666 //int snd_pcm_mixer_element(snd_pcm_t *pcm, snd_mixer_t *mixer, snd_mixer_elem_t **elem);
667 
668 /*
669  * application helpers - these functions are implemented on top
670  * of the basic API
671  */
672 
673 int snd_pcm_recover(snd_pcm_t *pcm, int err, int silent);
674 int snd_pcm_set_params(snd_pcm_t *pcm,
675  snd_pcm_format_t format,
676  snd_pcm_access_t access,
677  unsigned int channels,
678  unsigned int rate,
679  int soft_resample,
680  unsigned int latency);
681 int snd_pcm_get_params(snd_pcm_t *pcm,
682  snd_pcm_uframes_t *buffer_size,
683  snd_pcm_uframes_t *period_size);
684 
694 size_t snd_pcm_info_sizeof(void);
699 #define snd_pcm_info_alloca(ptr) __snd_alloca(ptr, snd_pcm_info)
700 int snd_pcm_info_malloc(snd_pcm_info_t **ptr);
701 void snd_pcm_info_free(snd_pcm_info_t *obj);
702 void snd_pcm_info_copy(snd_pcm_info_t *dst, const snd_pcm_info_t *src);
703 unsigned int snd_pcm_info_get_device(const snd_pcm_info_t *obj);
704 unsigned int snd_pcm_info_get_subdevice(const snd_pcm_info_t *obj);
705 snd_pcm_stream_t snd_pcm_info_get_stream(const snd_pcm_info_t *obj);
706 int snd_pcm_info_get_card(const snd_pcm_info_t *obj);
707 const char *snd_pcm_info_get_id(const snd_pcm_info_t *obj);
708 const char *snd_pcm_info_get_name(const snd_pcm_info_t *obj);
709 const char *snd_pcm_info_get_subdevice_name(const snd_pcm_info_t *obj);
710 snd_pcm_class_t snd_pcm_info_get_class(const snd_pcm_info_t *obj);
711 snd_pcm_subclass_t snd_pcm_info_get_subclass(const snd_pcm_info_t *obj);
712 unsigned int snd_pcm_info_get_subdevices_count(const snd_pcm_info_t *obj);
713 unsigned int snd_pcm_info_get_subdevices_avail(const snd_pcm_info_t *obj);
714 snd_pcm_sync_id_t snd_pcm_info_get_sync(const snd_pcm_info_t *obj);
715 void snd_pcm_info_set_device(snd_pcm_info_t *obj, unsigned int val);
716 void snd_pcm_info_set_subdevice(snd_pcm_info_t *obj, unsigned int val);
717 void snd_pcm_info_set_stream(snd_pcm_info_t *obj, snd_pcm_stream_t val);
718 
728 int snd_pcm_hw_params_any(snd_pcm_t *pcm, snd_pcm_hw_params_t *params);
729 
730 int snd_pcm_hw_params_can_mmap_sample_resolution(const snd_pcm_hw_params_t *params);
731 int snd_pcm_hw_params_is_double(const snd_pcm_hw_params_t *params);
732 int snd_pcm_hw_params_is_batch(const snd_pcm_hw_params_t *params);
733 int snd_pcm_hw_params_is_block_transfer(const snd_pcm_hw_params_t *params);
734 int snd_pcm_hw_params_is_monotonic(const snd_pcm_hw_params_t *params);
735 int snd_pcm_hw_params_can_overrange(const snd_pcm_hw_params_t *params);
736 int snd_pcm_hw_params_can_pause(const snd_pcm_hw_params_t *params);
737 int snd_pcm_hw_params_can_resume(const snd_pcm_hw_params_t *params);
738 int snd_pcm_hw_params_is_half_duplex(const snd_pcm_hw_params_t *params);
739 int snd_pcm_hw_params_is_joint_duplex(const snd_pcm_hw_params_t *params);
740 int snd_pcm_hw_params_can_sync_start(const snd_pcm_hw_params_t *params);
741 int snd_pcm_hw_params_can_disable_period_wakeup(const snd_pcm_hw_params_t *params);
742 int snd_pcm_hw_params_is_perfect_drain(const snd_pcm_hw_params_t *params);
743 int snd_pcm_hw_params_supports_audio_wallclock_ts(const snd_pcm_hw_params_t *params); /* deprecated, use audio_ts_type */
744 int snd_pcm_hw_params_supports_audio_ts_type(const snd_pcm_hw_params_t *params, int type);
745 int snd_pcm_hw_params_get_rate_numden(const snd_pcm_hw_params_t *params,
746  unsigned int *rate_num,
747  unsigned int *rate_den);
748 int snd_pcm_hw_params_get_sbits(const snd_pcm_hw_params_t *params);
749 int snd_pcm_hw_params_get_fifo_size(const snd_pcm_hw_params_t *params);
750 
751 #if 0
752 typedef struct _snd_pcm_hw_strategy snd_pcm_hw_strategy_t;
753 
754 /* choices need to be sorted on ascending badness */
755 typedef struct _snd_pcm_hw_strategy_simple_choices_list {
756  unsigned int value;
757  unsigned int badness;
758 } snd_pcm_hw_strategy_simple_choices_list_t;
759 
760 int snd_pcm_hw_params_strategy(snd_pcm_t *pcm, snd_pcm_hw_params_t *params,
761  const snd_pcm_hw_strategy_t *strategy,
762  unsigned int badness_min,
763  unsigned int badness_max);
764 
765 void snd_pcm_hw_strategy_free(snd_pcm_hw_strategy_t *strategy);
766 int snd_pcm_hw_strategy_simple(snd_pcm_hw_strategy_t **strategyp,
767  unsigned int badness_min,
768  unsigned int badness_max);
769 int snd_pcm_hw_params_try_explain_failure(snd_pcm_t *pcm,
770  snd_pcm_hw_params_t *fail,
771  snd_pcm_hw_params_t *success,
772  unsigned int depth,
773  snd_output_t *out);
774 
775 #endif
776 
777 size_t snd_pcm_hw_params_sizeof(void);
782 #define snd_pcm_hw_params_alloca(ptr) __snd_alloca(ptr, snd_pcm_hw_params)
783 int snd_pcm_hw_params_malloc(snd_pcm_hw_params_t **ptr);
784 void snd_pcm_hw_params_free(snd_pcm_hw_params_t *obj);
785 void snd_pcm_hw_params_copy(snd_pcm_hw_params_t *dst, const snd_pcm_hw_params_t *src);
786 
787 #if !defined(ALSA_LIBRARY_BUILD) && !defined(ALSA_PCM_OLD_HW_PARAMS_API)
788 
789 int snd_pcm_hw_params_get_access(const snd_pcm_hw_params_t *params, snd_pcm_access_t *_access);
790 int snd_pcm_hw_params_test_access(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_access_t _access);
791 int snd_pcm_hw_params_set_access(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_access_t _access);
792 int snd_pcm_hw_params_set_access_first(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_access_t *_access);
793 int snd_pcm_hw_params_set_access_last(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_access_t *_access);
794 int snd_pcm_hw_params_set_access_mask(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_access_mask_t *mask);
795 int snd_pcm_hw_params_get_access_mask(snd_pcm_hw_params_t *params, snd_pcm_access_mask_t *mask);
796 
797 int snd_pcm_hw_params_get_format(const snd_pcm_hw_params_t *params, snd_pcm_format_t *val);
798 int snd_pcm_hw_params_test_format(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_format_t val);
799 int snd_pcm_hw_params_set_format(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_format_t val);
800 int snd_pcm_hw_params_set_format_first(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_format_t *format);
801 int snd_pcm_hw_params_set_format_last(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_format_t *format);
802 int snd_pcm_hw_params_set_format_mask(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_format_mask_t *mask);
803 void snd_pcm_hw_params_get_format_mask(snd_pcm_hw_params_t *params, snd_pcm_format_mask_t *mask);
804 
805 int snd_pcm_hw_params_get_subformat(const snd_pcm_hw_params_t *params, snd_pcm_subformat_t *subformat);
806 int snd_pcm_hw_params_test_subformat(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_subformat_t subformat);
807 int snd_pcm_hw_params_set_subformat(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_subformat_t subformat);
808 int snd_pcm_hw_params_set_subformat_first(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_subformat_t *subformat);
809 int snd_pcm_hw_params_set_subformat_last(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_subformat_t *subformat);
810 int snd_pcm_hw_params_set_subformat_mask(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_subformat_mask_t *mask);
811 void snd_pcm_hw_params_get_subformat_mask(snd_pcm_hw_params_t *params, snd_pcm_subformat_mask_t *mask);
812 
813 int snd_pcm_hw_params_get_channels(const snd_pcm_hw_params_t *params, unsigned int *val);
814 int snd_pcm_hw_params_get_channels_min(const snd_pcm_hw_params_t *params, unsigned int *val);
815 int snd_pcm_hw_params_get_channels_max(const snd_pcm_hw_params_t *params, unsigned int *val);
816 int snd_pcm_hw_params_test_channels(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int val);
817 int snd_pcm_hw_params_set_channels(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int val);
818 int snd_pcm_hw_params_set_channels_min(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val);
819 int snd_pcm_hw_params_set_channels_max(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val);
820 int snd_pcm_hw_params_set_channels_minmax(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *min, unsigned int *max);
821 int snd_pcm_hw_params_set_channels_near(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val);
822 int snd_pcm_hw_params_set_channels_first(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val);
823 int snd_pcm_hw_params_set_channels_last(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val);
824 
825 int snd_pcm_hw_params_get_rate(const snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
826 int snd_pcm_hw_params_get_rate_min(const snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
827 int snd_pcm_hw_params_get_rate_max(const snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
828 int snd_pcm_hw_params_test_rate(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int val, int dir);
829 int snd_pcm_hw_params_set_rate(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int val, int dir);
830 int snd_pcm_hw_params_set_rate_min(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
831 int snd_pcm_hw_params_set_rate_max(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
832 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);
833 int snd_pcm_hw_params_set_rate_near(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
834 int snd_pcm_hw_params_set_rate_first(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
835 int snd_pcm_hw_params_set_rate_last(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
836 int snd_pcm_hw_params_set_rate_resample(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int val);
837 int snd_pcm_hw_params_get_rate_resample(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val);
838 int snd_pcm_hw_params_set_export_buffer(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int val);
839 int snd_pcm_hw_params_get_export_buffer(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val);
840 int snd_pcm_hw_params_set_period_wakeup(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int val);
841 int snd_pcm_hw_params_get_period_wakeup(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val);
842 int snd_pcm_hw_params_set_drain_silence(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int val);
843 int snd_pcm_hw_params_get_drain_silence(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val);
844 
845 int snd_pcm_hw_params_get_period_time(const snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
846 int snd_pcm_hw_params_get_period_time_min(const snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
847 int snd_pcm_hw_params_get_period_time_max(const snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
848 int snd_pcm_hw_params_test_period_time(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int val, int dir);
849 int snd_pcm_hw_params_set_period_time(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int val, int dir);
850 int snd_pcm_hw_params_set_period_time_min(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
851 int snd_pcm_hw_params_set_period_time_max(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
852 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);
853 int snd_pcm_hw_params_set_period_time_near(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
854 int snd_pcm_hw_params_set_period_time_first(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
855 int snd_pcm_hw_params_set_period_time_last(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
856 
857 int snd_pcm_hw_params_get_period_size(const snd_pcm_hw_params_t *params, snd_pcm_uframes_t *frames, int *dir);
858 int snd_pcm_hw_params_get_period_size_min(const snd_pcm_hw_params_t *params, snd_pcm_uframes_t *frames, int *dir);
859 int snd_pcm_hw_params_get_period_size_max(const snd_pcm_hw_params_t *params, snd_pcm_uframes_t *frames, int *dir);
860 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);
861 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);
862 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);
863 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);
864 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);
865 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);
866 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);
867 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);
868 int snd_pcm_hw_params_set_period_size_integer(snd_pcm_t *pcm, snd_pcm_hw_params_t *params);
869 
870 int snd_pcm_hw_params_get_periods(const snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
871 int snd_pcm_hw_params_get_periods_min(const snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
872 int snd_pcm_hw_params_get_periods_max(const snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
873 int snd_pcm_hw_params_test_periods(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int val, int dir);
874 int snd_pcm_hw_params_set_periods(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int val, int dir);
875 int snd_pcm_hw_params_set_periods_min(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
876 int snd_pcm_hw_params_set_periods_max(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
877 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);
878 int snd_pcm_hw_params_set_periods_near(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
879 int snd_pcm_hw_params_set_periods_first(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
880 int snd_pcm_hw_params_set_periods_last(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
881 int snd_pcm_hw_params_set_periods_integer(snd_pcm_t *pcm, snd_pcm_hw_params_t *params);
882 
883 int snd_pcm_hw_params_get_buffer_time(const snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
884 int snd_pcm_hw_params_get_buffer_time_min(const snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
885 int snd_pcm_hw_params_get_buffer_time_max(const snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
886 int snd_pcm_hw_params_test_buffer_time(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int val, int dir);
887 int snd_pcm_hw_params_set_buffer_time(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int val, int dir);
888 int snd_pcm_hw_params_set_buffer_time_min(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
889 int snd_pcm_hw_params_set_buffer_time_max(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
890 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);
891 int snd_pcm_hw_params_set_buffer_time_near(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
892 int snd_pcm_hw_params_set_buffer_time_first(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
893 int snd_pcm_hw_params_set_buffer_time_last(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
894 
895 int snd_pcm_hw_params_get_buffer_size(const snd_pcm_hw_params_t *params, snd_pcm_uframes_t *val);
896 int snd_pcm_hw_params_get_buffer_size_min(const snd_pcm_hw_params_t *params, snd_pcm_uframes_t *val);
897 int snd_pcm_hw_params_get_buffer_size_max(const snd_pcm_hw_params_t *params, snd_pcm_uframes_t *val);
898 int snd_pcm_hw_params_test_buffer_size(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_uframes_t val);
899 int snd_pcm_hw_params_set_buffer_size(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_uframes_t val);
900 int snd_pcm_hw_params_set_buffer_size_min(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_uframes_t *val);
901 int snd_pcm_hw_params_set_buffer_size_max(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_uframes_t *val);
902 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);
903 int snd_pcm_hw_params_set_buffer_size_near(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_uframes_t *val);
904 int snd_pcm_hw_params_set_buffer_size_first(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_uframes_t *val);
905 int snd_pcm_hw_params_set_buffer_size_last(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_uframes_t *val);
906 
907 #endif /* !ALSA_LIBRARY_BUILD && !ALSA_PCM_OLD_HW_PARAMS_API */
908 
909 int snd_pcm_hw_params_get_min_align(const snd_pcm_hw_params_t *params, snd_pcm_uframes_t *val);
910 
920 size_t snd_pcm_sw_params_sizeof(void);
925 #define snd_pcm_sw_params_alloca(ptr) __snd_alloca(ptr, snd_pcm_sw_params)
926 int snd_pcm_sw_params_malloc(snd_pcm_sw_params_t **ptr);
927 void snd_pcm_sw_params_free(snd_pcm_sw_params_t *obj);
928 void snd_pcm_sw_params_copy(snd_pcm_sw_params_t *dst, const snd_pcm_sw_params_t *src);
929 int snd_pcm_sw_params_get_boundary(const snd_pcm_sw_params_t *params, snd_pcm_uframes_t *val);
930 
931 #if !defined(ALSA_LIBRARY_BUILD) && !defined(ALSA_PCM_OLD_SW_PARAMS_API)
932 
933 int snd_pcm_sw_params_set_tstamp_mode(snd_pcm_t *pcm, snd_pcm_sw_params_t *params, snd_pcm_tstamp_t val);
934 int snd_pcm_sw_params_get_tstamp_mode(const snd_pcm_sw_params_t *params, snd_pcm_tstamp_t *val);
935 int snd_pcm_sw_params_set_tstamp_type(snd_pcm_t *pcm, snd_pcm_sw_params_t *params, snd_pcm_tstamp_type_t val);
936 int snd_pcm_sw_params_get_tstamp_type(const snd_pcm_sw_params_t *params, snd_pcm_tstamp_type_t *val);
937 int snd_pcm_sw_params_set_avail_min(snd_pcm_t *pcm, snd_pcm_sw_params_t *params, snd_pcm_uframes_t val);
938 int snd_pcm_sw_params_get_avail_min(const snd_pcm_sw_params_t *params, snd_pcm_uframes_t *val);
939 int snd_pcm_sw_params_set_period_event(snd_pcm_t *pcm, snd_pcm_sw_params_t *params, int val);
940 int snd_pcm_sw_params_get_period_event(const snd_pcm_sw_params_t *params, int *val);
941 int snd_pcm_sw_params_set_start_threshold(snd_pcm_t *pcm, snd_pcm_sw_params_t *params, snd_pcm_uframes_t val);
942 int snd_pcm_sw_params_get_start_threshold(const snd_pcm_sw_params_t *paramsm, snd_pcm_uframes_t *val);
943 int snd_pcm_sw_params_set_stop_threshold(snd_pcm_t *pcm, snd_pcm_sw_params_t *params, snd_pcm_uframes_t val);
944 int snd_pcm_sw_params_get_stop_threshold(const snd_pcm_sw_params_t *params, snd_pcm_uframes_t *val);
945 int snd_pcm_sw_params_set_silence_threshold(snd_pcm_t *pcm, snd_pcm_sw_params_t *params, snd_pcm_uframes_t val);
946 int snd_pcm_sw_params_get_silence_threshold(const snd_pcm_sw_params_t *params, snd_pcm_uframes_t *val);
947 int snd_pcm_sw_params_set_silence_size(snd_pcm_t *pcm, snd_pcm_sw_params_t *params, snd_pcm_uframes_t val);
948 int snd_pcm_sw_params_get_silence_size(const snd_pcm_sw_params_t *params, snd_pcm_uframes_t *val);
949 
950 #endif /* !ALSA_LIBRARY_BUILD && !ALSA_PCM_OLD_SW_PARAMS_API */
951 
954 /* include old API */
955 #ifndef ALSA_LIBRARY_BUILD
956 #if defined(ALSA_PCM_OLD_HW_PARAMS_API) || defined(ALSA_PCM_OLD_SW_PARAMS_API)
957 #include "pcm_old.h"
958 #endif
959 #endif
960 
968 size_t snd_pcm_access_mask_sizeof(void);
973 #define snd_pcm_access_mask_alloca(ptr) __snd_alloca(ptr, snd_pcm_access_mask)
974 int snd_pcm_access_mask_malloc(snd_pcm_access_mask_t **ptr);
975 void snd_pcm_access_mask_free(snd_pcm_access_mask_t *obj);
976 void snd_pcm_access_mask_copy(snd_pcm_access_mask_t *dst, const snd_pcm_access_mask_t *src);
977 void snd_pcm_access_mask_none(snd_pcm_access_mask_t *mask);
978 void snd_pcm_access_mask_any(snd_pcm_access_mask_t *mask);
979 int snd_pcm_access_mask_test(const snd_pcm_access_mask_t *mask, snd_pcm_access_t val);
980 int snd_pcm_access_mask_empty(const snd_pcm_access_mask_t *mask);
981 void snd_pcm_access_mask_set(snd_pcm_access_mask_t *mask, snd_pcm_access_t val);
982 void snd_pcm_access_mask_reset(snd_pcm_access_mask_t *mask, snd_pcm_access_t val);
983 
993 size_t snd_pcm_format_mask_sizeof(void);
998 #define snd_pcm_format_mask_alloca(ptr) __snd_alloca(ptr, snd_pcm_format_mask)
999 int snd_pcm_format_mask_malloc(snd_pcm_format_mask_t **ptr);
1000 void snd_pcm_format_mask_free(snd_pcm_format_mask_t *obj);
1001 void snd_pcm_format_mask_copy(snd_pcm_format_mask_t *dst, const snd_pcm_format_mask_t *src);
1002 void snd_pcm_format_mask_none(snd_pcm_format_mask_t *mask);
1003 void snd_pcm_format_mask_any(snd_pcm_format_mask_t *mask);
1004 int snd_pcm_format_mask_test(const snd_pcm_format_mask_t *mask, snd_pcm_format_t val);
1005 int snd_pcm_format_mask_empty(const snd_pcm_format_mask_t *mask);
1006 void snd_pcm_format_mask_set(snd_pcm_format_mask_t *mask, snd_pcm_format_t val);
1007 void snd_pcm_format_mask_reset(snd_pcm_format_mask_t *mask, snd_pcm_format_t val);
1008 
1018 size_t snd_pcm_subformat_mask_sizeof(void);
1023 #define snd_pcm_subformat_mask_alloca(ptr) __snd_alloca(ptr, snd_pcm_subformat_mask)
1024 int snd_pcm_subformat_mask_malloc(snd_pcm_subformat_mask_t **ptr);
1025 void snd_pcm_subformat_mask_free(snd_pcm_subformat_mask_t *obj);
1026 void snd_pcm_subformat_mask_copy(snd_pcm_subformat_mask_t *dst, const snd_pcm_subformat_mask_t *src);
1027 void snd_pcm_subformat_mask_none(snd_pcm_subformat_mask_t *mask);
1028 void snd_pcm_subformat_mask_any(snd_pcm_subformat_mask_t *mask);
1029 int snd_pcm_subformat_mask_test(const snd_pcm_subformat_mask_t *mask, snd_pcm_subformat_t val);
1030 int snd_pcm_subformat_mask_empty(const snd_pcm_subformat_mask_t *mask);
1031 void snd_pcm_subformat_mask_set(snd_pcm_subformat_mask_t *mask, snd_pcm_subformat_t val);
1032 void snd_pcm_subformat_mask_reset(snd_pcm_subformat_mask_t *mask, snd_pcm_subformat_t val);
1033 
1043 size_t snd_pcm_status_sizeof(void);
1048 #define snd_pcm_status_alloca(ptr) __snd_alloca(ptr, snd_pcm_status)
1049 int snd_pcm_status_malloc(snd_pcm_status_t **ptr);
1050 void snd_pcm_status_free(snd_pcm_status_t *obj);
1051 void snd_pcm_status_copy(snd_pcm_status_t *dst, const snd_pcm_status_t *src);
1052 snd_pcm_state_t snd_pcm_status_get_state(const snd_pcm_status_t *obj);
1053 void snd_pcm_status_get_trigger_tstamp(const snd_pcm_status_t *obj, snd_timestamp_t *ptr);
1054 void snd_pcm_status_get_trigger_htstamp(const snd_pcm_status_t *obj, snd_htimestamp_t *ptr);
1055 void snd_pcm_status_get_tstamp(const snd_pcm_status_t *obj, snd_timestamp_t *ptr);
1056 void snd_pcm_status_get_htstamp(const snd_pcm_status_t *obj, snd_htimestamp_t *ptr);
1057 void snd_pcm_status_get_audio_htstamp(const snd_pcm_status_t *obj, snd_htimestamp_t *ptr);
1058 void snd_pcm_status_get_driver_htstamp(const snd_pcm_status_t *obj, snd_htimestamp_t *ptr);
1059 void snd_pcm_status_get_audio_htstamp_report(const snd_pcm_status_t *obj,
1060  snd_pcm_audio_tstamp_report_t *audio_tstamp_report);
1061 void snd_pcm_status_set_audio_htstamp_config(snd_pcm_status_t *obj,
1062  snd_pcm_audio_tstamp_config_t *audio_tstamp_config);
1063 
1064 static inline void snd_pcm_pack_audio_tstamp_config(unsigned int *data,
1065  snd_pcm_audio_tstamp_config_t *config)
1066 {
1067  *data = config->report_delay;
1068  *data <<= 4;
1069  *data |= config->type_requested;
1070 }
1071 
1072 static inline void snd_pcm_unpack_audio_tstamp_report(unsigned int data, unsigned int accuracy,
1073  snd_pcm_audio_tstamp_report_t *report)
1074 {
1075  data >>= 16;
1076  report->valid = data & 1;
1077  report->actual_type = (data >> 1) & 0xF;
1078  report->accuracy_report = (data >> 5) & 1;
1079  report->accuracy = accuracy;
1080 }
1081 
1082 snd_pcm_sframes_t snd_pcm_status_get_delay(const snd_pcm_status_t *obj);
1083 snd_pcm_uframes_t snd_pcm_status_get_avail(const snd_pcm_status_t *obj);
1084 snd_pcm_uframes_t snd_pcm_status_get_avail_max(const snd_pcm_status_t *obj);
1085 snd_pcm_uframes_t snd_pcm_status_get_overrange(const snd_pcm_status_t *obj);
1086 
1096 const char *snd_pcm_type_name(snd_pcm_type_t type);
1097 const char *snd_pcm_stream_name(const snd_pcm_stream_t stream);
1098 const char *snd_pcm_access_name(const snd_pcm_access_t _access);
1099 const char *snd_pcm_format_name(const snd_pcm_format_t format);
1100 const char *snd_pcm_format_description(const snd_pcm_format_t format);
1101 const char *snd_pcm_subformat_name(const snd_pcm_subformat_t subformat);
1102 const char *snd_pcm_subformat_description(const snd_pcm_subformat_t subformat);
1103 snd_pcm_subformat_t snd_pcm_subformat_value(const char* name);
1104 snd_pcm_format_t snd_pcm_format_value(const char* name);
1105 const char *snd_pcm_tstamp_mode_name(const snd_pcm_tstamp_t mode);
1106 const char *snd_pcm_state_name(const snd_pcm_state_t state);
1107 
1117 int snd_pcm_dump(snd_pcm_t *pcm, snd_output_t *out);
1118 int snd_pcm_dump_hw_setup(snd_pcm_t *pcm, snd_output_t *out);
1119 int snd_pcm_dump_sw_setup(snd_pcm_t *pcm, snd_output_t *out);
1120 int snd_pcm_dump_setup(snd_pcm_t *pcm, snd_output_t *out);
1121 int snd_pcm_hw_params_dump(snd_pcm_hw_params_t *params, snd_output_t *out);
1122 int snd_pcm_sw_params_dump(snd_pcm_sw_params_t *params, snd_output_t *out);
1123 int snd_pcm_status_dump(snd_pcm_status_t *status, snd_output_t *out);
1124 
1134 int snd_pcm_mmap_begin(snd_pcm_t *pcm,
1135  const snd_pcm_channel_area_t **areas,
1136  snd_pcm_uframes_t *offset,
1137  snd_pcm_uframes_t *frames);
1138 snd_pcm_sframes_t snd_pcm_mmap_commit(snd_pcm_t *pcm,
1139  snd_pcm_uframes_t offset,
1140  snd_pcm_uframes_t frames);
1141 snd_pcm_sframes_t snd_pcm_mmap_writei(snd_pcm_t *pcm, const void *buffer, snd_pcm_uframes_t size);
1142 snd_pcm_sframes_t snd_pcm_mmap_readi(snd_pcm_t *pcm, void *buffer, snd_pcm_uframes_t size);
1143 snd_pcm_sframes_t snd_pcm_mmap_writen(snd_pcm_t *pcm, void **bufs, snd_pcm_uframes_t size);
1144 snd_pcm_sframes_t snd_pcm_mmap_readn(snd_pcm_t *pcm, void **bufs, snd_pcm_uframes_t size);
1145 
1155 int snd_pcm_format_signed(snd_pcm_format_t format);
1156 int snd_pcm_format_unsigned(snd_pcm_format_t format);
1157 int snd_pcm_format_linear(snd_pcm_format_t format);
1158 int snd_pcm_format_float(snd_pcm_format_t format);
1159 int snd_pcm_format_little_endian(snd_pcm_format_t format);
1160 int snd_pcm_format_big_endian(snd_pcm_format_t format);
1161 int snd_pcm_format_cpu_endian(snd_pcm_format_t format);
1162 int snd_pcm_format_width(snd_pcm_format_t format); /* in bits */
1163 int snd_pcm_format_physical_width(snd_pcm_format_t format); /* in bits */
1164 snd_pcm_format_t snd_pcm_build_linear_format(int width, int pwidth, int unsignd, int big_endian);
1165 ssize_t snd_pcm_format_size(snd_pcm_format_t format, size_t samples);
1166 uint8_t snd_pcm_format_silence(snd_pcm_format_t format);
1167 uint16_t snd_pcm_format_silence_16(snd_pcm_format_t format);
1168 uint32_t snd_pcm_format_silence_32(snd_pcm_format_t format);
1169 uint64_t snd_pcm_format_silence_64(snd_pcm_format_t format);
1170 int snd_pcm_format_set_silence(snd_pcm_format_t format, void *buf, unsigned int samples);
1171 
1172 snd_pcm_sframes_t snd_pcm_bytes_to_frames(snd_pcm_t *pcm, ssize_t bytes);
1173 ssize_t snd_pcm_frames_to_bytes(snd_pcm_t *pcm, snd_pcm_sframes_t frames);
1174 long snd_pcm_bytes_to_samples(snd_pcm_t *pcm, ssize_t bytes);
1175 ssize_t snd_pcm_samples_to_bytes(snd_pcm_t *pcm, long samples);
1176 
1177 int snd_pcm_area_silence(const snd_pcm_channel_area_t *dst_channel, snd_pcm_uframes_t dst_offset,
1178  unsigned int samples, snd_pcm_format_t format);
1179 int snd_pcm_areas_silence(const snd_pcm_channel_area_t *dst_channels, snd_pcm_uframes_t dst_offset,
1180  unsigned int channels, snd_pcm_uframes_t frames, snd_pcm_format_t format);
1181 int snd_pcm_area_copy(const snd_pcm_channel_area_t *dst_channel, snd_pcm_uframes_t dst_offset,
1182  const snd_pcm_channel_area_t *src_channel, snd_pcm_uframes_t src_offset,
1183  unsigned int samples, snd_pcm_format_t format);
1184 int snd_pcm_areas_copy(const snd_pcm_channel_area_t *dst_channels, snd_pcm_uframes_t dst_offset,
1185  const snd_pcm_channel_area_t *src_channels, snd_pcm_uframes_t src_offset,
1186  unsigned int channels, snd_pcm_uframes_t frames, snd_pcm_format_t format);
1187 int snd_pcm_areas_copy_wrap(const snd_pcm_channel_area_t *dst_channels,
1188  snd_pcm_uframes_t dst_offset,
1189  const snd_pcm_uframes_t dst_size,
1190  const snd_pcm_channel_area_t *src_channels,
1191  snd_pcm_uframes_t src_offset,
1192  const snd_pcm_uframes_t src_size,
1193  const unsigned int channels,
1194  snd_pcm_uframes_t frames,
1195  const snd_pcm_format_t format);
1196 
1204 static inline void *snd_pcm_channel_area_addr(const snd_pcm_channel_area_t *area, snd_pcm_uframes_t offset)
1205 {
1206  return (char *)area->addr + (area->first + area->step * offset) / 8;
1207 }
1208 
1215 static inline unsigned int snd_pcm_channel_area_step(const snd_pcm_channel_area_t *area)
1216 {
1217  return area->step / 8;
1218 }
1219 
1230 typedef enum _snd_pcm_hook_type {
1231  SND_PCM_HOOK_TYPE_HW_PARAMS = 0,
1232  SND_PCM_HOOK_TYPE_HW_FREE,
1233  SND_PCM_HOOK_TYPE_CLOSE,
1234  SND_PCM_HOOK_TYPE_LAST = SND_PCM_HOOK_TYPE_CLOSE
1235 } snd_pcm_hook_type_t;
1236 
1238 typedef struct _snd_pcm_hook snd_pcm_hook_t;
1240 typedef int (*snd_pcm_hook_func_t)(snd_pcm_hook_t *hook);
1241 snd_pcm_t *snd_pcm_hook_get_pcm(snd_pcm_hook_t *hook);
1242 void *snd_pcm_hook_get_private(snd_pcm_hook_t *hook);
1243 void snd_pcm_hook_set_private(snd_pcm_hook_t *hook, void *private_data);
1244 int snd_pcm_hook_add(snd_pcm_hook_t **hookp, snd_pcm_t *pcm,
1245  snd_pcm_hook_type_t type,
1246  snd_pcm_hook_func_t func, void *private_data);
1247 int snd_pcm_hook_remove(snd_pcm_hook_t *hook);
1248 
1259 typedef struct _snd_pcm_scope_ops {
1263  int (*enable)(snd_pcm_scope_t *scope);
1267  void (*disable)(snd_pcm_scope_t *scope);
1271  void (*start)(snd_pcm_scope_t *scope);
1275  void (*stop)(snd_pcm_scope_t *scope);
1279  void (*update)(snd_pcm_scope_t *scope);
1283  void (*reset)(snd_pcm_scope_t *scope);
1287  void (*close)(snd_pcm_scope_t *scope);
1288 } snd_pcm_scope_ops_t;
1289 
1290 snd_pcm_uframes_t snd_pcm_meter_get_bufsize(snd_pcm_t *pcm);
1291 unsigned int snd_pcm_meter_get_channels(snd_pcm_t *pcm);
1292 unsigned int snd_pcm_meter_get_rate(snd_pcm_t *pcm);
1293 snd_pcm_uframes_t snd_pcm_meter_get_now(snd_pcm_t *pcm);
1294 snd_pcm_uframes_t snd_pcm_meter_get_boundary(snd_pcm_t *pcm);
1295 int snd_pcm_meter_add_scope(snd_pcm_t *pcm, snd_pcm_scope_t *scope);
1296 snd_pcm_scope_t *snd_pcm_meter_search_scope(snd_pcm_t *pcm, const char *name);
1297 int snd_pcm_scope_malloc(snd_pcm_scope_t **ptr);
1298 void snd_pcm_scope_set_ops(snd_pcm_scope_t *scope,
1299  const snd_pcm_scope_ops_t *val);
1300 void snd_pcm_scope_set_name(snd_pcm_scope_t *scope, const char *val);
1301 const char *snd_pcm_scope_get_name(snd_pcm_scope_t *scope);
1302 void *snd_pcm_scope_get_callback_private(snd_pcm_scope_t *scope);
1303 void snd_pcm_scope_set_callback_private(snd_pcm_scope_t *scope, void *val);
1304 int snd_pcm_scope_s16_open(snd_pcm_t *pcm, const char *name,
1305  snd_pcm_scope_t **scopep);
1306 int16_t *snd_pcm_scope_s16_get_channel_buffer(snd_pcm_scope_t *scope,
1307  unsigned int channel);
1308 
1319 typedef enum _snd_spcm_latency {
1322  SND_SPCM_LATENCY_STANDARD = 0,
1325  SND_SPCM_LATENCY_MEDIUM,
1328  SND_SPCM_LATENCY_REALTIME
1329 } snd_spcm_latency_t;
1330 
1332 typedef enum _snd_spcm_xrun_type {
1334  SND_SPCM_XRUN_IGNORE = 0,
1336  SND_SPCM_XRUN_STOP
1337 } snd_spcm_xrun_type_t;
1338 
1340 typedef enum _snd_spcm_duplex_type {
1342  SND_SPCM_DUPLEX_LIBERAL = 0,
1344  SND_SPCM_DUPLEX_PEDANTIC
1345 } snd_spcm_duplex_type_t;
1346 
1347 int snd_spcm_init(snd_pcm_t *pcm,
1348  unsigned int rate,
1349  unsigned int channels,
1350  snd_pcm_format_t format,
1351  snd_pcm_subformat_t subformat,
1352  snd_spcm_latency_t latency,
1353  snd_pcm_access_t _access,
1354  snd_spcm_xrun_type_t xrun_type);
1355 
1356 int snd_spcm_init_duplex(snd_pcm_t *playback_pcm,
1357  snd_pcm_t *capture_pcm,
1358  unsigned int rate,
1359  unsigned int channels,
1360  snd_pcm_format_t format,
1361  snd_pcm_subformat_t subformat,
1362  snd_spcm_latency_t latency,
1363  snd_pcm_access_t _access,
1364  snd_spcm_xrun_type_t xrun_type,
1365  snd_spcm_duplex_type_t duplex_type);
1366 
1367 int snd_spcm_init_get_params(snd_pcm_t *pcm,
1368  unsigned int *rate,
1369  snd_pcm_uframes_t *buffer_size,
1370  snd_pcm_uframes_t *period_size);
1371 
1381 /* Deprecated functions, for compatibility */
1382 const char *snd_pcm_start_mode_name(snd_pcm_start_t mode) __attribute__((deprecated));
1383 const char *snd_pcm_xrun_mode_name(snd_pcm_xrun_t mode) __attribute__((deprecated));
1384 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));
1385 snd_pcm_start_t snd_pcm_sw_params_get_start_mode(const snd_pcm_sw_params_t *params) __attribute__((deprecated));
1386 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));
1387 snd_pcm_xrun_t snd_pcm_sw_params_get_xrun_mode(const snd_pcm_sw_params_t *params) __attribute__((deprecated));
1388 #if !defined(ALSA_LIBRARY_BUILD) && !defined(ALSA_PCM_OLD_SW_PARAMS_API)
1389 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));
1390 int snd_pcm_sw_params_get_xfer_align(const snd_pcm_sw_params_t *params, snd_pcm_uframes_t *val) __attribute__((deprecated));
1391 int snd_pcm_sw_params_set_sleep_min(snd_pcm_t *pcm, snd_pcm_sw_params_t *params, unsigned int val) __attribute__((deprecated));
1392 int snd_pcm_sw_params_get_sleep_min(const snd_pcm_sw_params_t *params, unsigned int *val) __attribute__((deprecated));
1393 #endif /* !ALSA_LIBRARY_BUILD && !ALSA_PCM_OLD_SW_PARAMS_API */
1394 #if !defined(ALSA_LIBRARY_BUILD) && !defined(ALSA_PCM_OLD_HW_PARAMS_API)
1395 int snd_pcm_hw_params_get_tick_time(const snd_pcm_hw_params_t *params, unsigned int *val, int *dir) __attribute__((deprecated));
1396 int snd_pcm_hw_params_get_tick_time_min(const snd_pcm_hw_params_t *params, unsigned int *val, int *dir) __attribute__((deprecated));
1397 int snd_pcm_hw_params_get_tick_time_max(const snd_pcm_hw_params_t *params, unsigned int *val, int *dir) __attribute__((deprecated));
1398 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));
1399 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));
1400 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));
1401 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));
1402 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));
1403 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));
1404 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));
1405 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));
1406 #endif /* !ALSA_LIBRARY_BUILD && !ALSA_PCM_OLD_HW_PARAMS_API */
1407 
1410 #ifdef __cplusplus
1411 }
1412 #endif
1413 
1414 #endif /* __ALSA_PCM_H */
SND_PCM_STATE_DISCONNECTED
@ SND_PCM_STATE_DISCONNECTED
Definition: pcm.h:317
SND_PCM_FORMAT_U24
@ SND_PCM_FORMAT_U24
Definition: pcm.h:240
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:1054
SND_PCM_TSTAMP_NONE
@ SND_PCM_TSTAMP_NONE
Definition: pcm.h:344
snd_pcm_pause
int snd_pcm_pause(snd_pcm_t *pcm, int enable)
Pause/resume PCM.
Definition: pcm.c:1392
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:900
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:4292
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:5857
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)
(DEPRECATED) Restrict a configuration space to contain only one tick time
Definition: pcm.c:6200
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:6817
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:5350
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:1759
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)
(DEPRECATED) Extract tick time from a configuration space
Definition: pcm.c:6130
SND_CHMAP_RR
@ SND_CHMAP_RR
Definition: pcm.h:596
SND_PCM_FORMAT_A_LAW
@ SND_PCM_FORMAT_A_LAW
Definition: pcm.h:171
snd_pcm_channel_area_t
Definition: pcm.h:492
SND_PCM_STATE_SETUP
@ SND_PCM_STATE_SETUP
Definition: pcm.h:303
SND_PCM_FORMAT_S24
@ SND_PCM_FORMAT_S24
Definition: pcm.h:238
snd_spcm_latency_t
snd_spcm_latency_t
Definition: pcm.h:1319
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:5185
SND_PCM_TYPE_LADSPA
@ SND_PCM_TYPE_LADSPA
Definition: pcm.h:466
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:4212
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:4687
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:2368
SND_PCM_FORMAT_U16
@ SND_PCM_FORMAT_U16
Definition: pcm.h:236
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:1286
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:3618
SND_CHMAP_FLW
@ SND_CHMAP_FLW
Definition: pcm.h:606
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:4159
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)
(DEPRECATED) Extract maximum tick time from a configuration space
Definition: pcm.c:6168
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:1686
snd_pcm_format_t
snd_pcm_format_t
Definition: pcm.h:125
snd_pcm_sframes_t
long snd_pcm_sframes_t
Definition: pcm.h:398
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:5625
SND_PCM_FORMAT_U32_BE
@ SND_PCM_FORMAT_U32_BE
Definition: pcm.h:155
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:5875
snd_pcm_start_t
snd_pcm_start_t
Definition: pcm.h:324
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:7037
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:4119
SND_CHMAP_TSR
@ SND_CHMAP_TSR
Definition: pcm.h:621
snd_pcm_status_get_tstamp
void snd_pcm_status_get_tstamp(const snd_pcm_status_t *obj, snd_timestamp_t *ptr)
Get "now" timestamp from a PCM status container.
Definition: pcm.c:7050
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:5810
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:6412
snd_pcm_format_mask_t
struct _snd_pcm_format_mask snd_pcm_format_mask_t
Definition: pcm.h:73
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:7328
snd_pcm_audio_tstamp_report_t::accuracy
unsigned int accuracy
Definition: pcm.h:392
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:1213
SND_PCM_SUBCLASS_MULTI_MIX
@ SND_PCM_SUBCLASS_MULTI_MIX
Definition: pcm.h:96
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:8974
SND_PCM_FORMAT_U20_3BE
@ SND_PCM_FORMAT_U20_3BE
Definition: pcm.h:203
snd_pcm_audio_tstamp_report_t::valid
unsigned int valid
Definition: pcm.h:388
SND_PCM_TSTAMP_TYPE_GETTIMEOFDAY
@ SND_PCM_TSTAMP_TYPE_GETTIMEOFDAY
Definition: pcm.h:356
SND_PCM_FORMAT_S16_BE
@ SND_PCM_FORMAT_S16_BE
Definition: pcm.h:135
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:4814
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:897
snd_pcm_status_t
struct _snd_pcm_status snd_pcm_status_t
Definition: pcm.h:69
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:6107
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)
(DEPRECATED) Set start mode inside a software configuration container
Definition: pcm.c:6461
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:1524
SND_CHMAP_BC
@ SND_CHMAP_BC
Definition: pcm.h:624
snd_pcm_state
snd_pcm_state_t snd_pcm_state(snd_pcm_t *pcm)
Return PCM state.
Definition: pcm.c:1083
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:3855
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:3997
snd_pcm_subformat_mask_sizeof
size_t snd_pcm_subformat_mask_sizeof(void)
get size of snd_pcm_subformat_mask_t
Definition: pcm.c:4179
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:3678
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_type
_snd_pcm_type
Definition: pcm.h:421
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:5509
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_TYPE_DSNOOP
@ SND_PCM_TYPE_DSNOOP
Definition: pcm.h:472
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:5595
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:6577
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:4961
SND_PCM_FORMAT_FLOAT_LE
@ SND_PCM_FORMAT_FLOAT_LE
Definition: pcm.h:157
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:4910
snd_pcm_t
struct _snd_pcm snd_pcm_t
Definition: pcm.h:418
SND_PCM_FORMAT_S20_BE
@ SND_PCM_FORMAT_S20_BE
Definition: pcm.h:181
snd_pcm_subclass_t
snd_pcm_subclass_t
Definition: pcm.h:92
SND_PCM_FORMAT_U24_3BE
@ SND_PCM_FORMAT_U24_3BE
Definition: pcm.h:195
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:4663
SND_PCM_CLASS_MULTI
@ SND_PCM_CLASS_MULTI
Definition: pcm.h:83
SND_CHMAP_FLH
@ SND_CHMAP_FLH
Definition: pcm.h:608
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:2496
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:175
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:5400
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_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:6435
SND_PCM_FORMAT_FLOAT_BE
@ SND_PCM_FORMAT_FLOAT_BE
Definition: pcm.h:159
SND_PCM_FORMAT_S16
@ SND_PCM_FORMAT_S16
Definition: pcm.h:234
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:4067
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:4036
SND_PCM_FORMAT_S18_3BE
@ SND_PCM_FORMAT_S18_3BE
Definition: pcm.h:207
snd_pcm_chmap_query_t
Definition: pcm.h:645
snd_pcm_hook_type_t
snd_pcm_hook_type_t
Definition: pcm.h:1230
SND_PCM_FORMAT_U24_LE
@ SND_PCM_FORMAT_U24_LE
Definition: pcm.h:145
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:7229
snd_pcm_hwsync
int snd_pcm_hwsync(snd_pcm_t *pcm)
(DEPRECATED) Synchronize stream position with hardware
Definition: pcm.c:1107
SND_PCM_TSTAMP_TYPE_MONOTONIC
@ SND_PCM_TSTAMP_TYPE_MONOTONIC
Definition: pcm.h:357
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:6793
snd_pcm_channel_area_t::addr
void * addr
Definition: pcm.h:494
SND_SPCM_DUPLEX_LIBERAL
@ SND_SPCM_DUPLEX_LIBERAL
Definition: pcm.h:1342
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:3509
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:4539
SND_PCM_TYPE_SHARE
@ SND_PCM_TYPE_SHARE
Definition: pcm.h:454
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:7142
SND_PCM_ACCESS_RW_INTERLEAVED
@ SND_PCM_ACCESS_RW_INTERLEAVED
Definition: pcm.h:118
snd_pcm_audio_tstamp_report_t
Definition: pcm.h:385
SND_CHMAP_LFE
@ SND_CHMAP_LFE
Definition: pcm.h:598
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:3941
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:4262
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:5011
snd_pcm_format_mask_sizeof
size_t snd_pcm_format_mask_sizeof(void)
get size of snd_pcm_format_mask_t
Definition: pcm.c:4076
SND_CHMAP_TRR
@ SND_CHMAP_TRR
Definition: pcm.h:616
SND_PCM_FORMAT_U18_3BE
@ SND_PCM_FORMAT_U18_3BE
Definition: pcm.h:211
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:7306
SND_CHMAP_TRL
@ SND_CHMAP_TRL
Definition: pcm.h:615
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:3891
SND_PCM_FORMAT_S32_BE
@ SND_PCM_FORMAT_S32_BE
Definition: pcm.h:151
snd_pcm_status_get_audio_htstamp
void snd_pcm_status_get_audio_htstamp(const snd_pcm_status_t *obj, snd_htimestamp_t *ptr)
Get "now" hi-res audio timestamp from a PCM status container.
Definition: pcm.c:7078
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:4109
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:2165
SND_PCM_STATE_OPEN
@ SND_PCM_STATE_OPEN
Definition: pcm.h:301
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)
(DEPRECATED) Restrict a configuration space with a minimum tick time
Definition: pcm.c:6215
snd_pcm_xrun_mode_name
const char * snd_pcm_xrun_mode_name(snd_pcm_xrun_t mode)
(DEPRECATED) get name of PCM xrun mode setting
Definition: pcm.c:2268
snd_pcm_stream
snd_pcm_stream_t snd_pcm_stream(snd_pcm_t *pcm)
get stream for a PCM handle
Definition: pcm.c:762
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)
(DEPRECATED) Get minimum numbers of ticks to sleep from a software configuration container
Definition: pcm.c:6641
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:863
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:4026
snd_pcm_format_physical_width
int snd_pcm_format_physical_width(snd_pcm_format_t format)
Return the physical bit-width of the format (bits needed to store a PCM sample)
Definition: pcm_misc.c:277
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:6384
SND_PCM_TYPE_LINEAR_FLOAT
@ SND_PCM_TYPE_LINEAR_FLOAT
Definition: pcm.h:464
snd_pcm_status_get_driver_htstamp
void snd_pcm_status_get_driver_htstamp(const snd_pcm_status_t *obj, snd_htimestamp_t *ptr)
Get "now" hi-res driver timestamp from a PCM status container. Defines when the status was generated ...
Definition: pcm.c:7090
snd_pcm_chmap_print
int snd_pcm_chmap_print(const snd_pcm_chmap_t *map, size_t maxlen, char *buf)
Definition: pcm.c:8456
SND_PCM_TYPE_HOOKS
@ SND_PCM_TYPE_HOOKS
Definition: pcm.h:425
SND_PCM_FORMAT_U24_3LE
@ SND_PCM_FORMAT_U24_3LE
Definition: pcm.h:193
SND_PCM_ACCESS_MMAP_INTERLEAVED
@ SND_PCM_ACCESS_MMAP_INTERLEAVED
Definition: pcm.h:112
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:3598
SND_CHMAP_FRW
@ SND_CHMAP_FRW
Definition: pcm.h:607
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:3310
SND_PCM_XRUN_STOP
@ SND_PCM_XRUN_STOP
Definition: pcm.h:337
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:6665
SND_PCM_FORMAT_S20_3LE
@ SND_PCM_FORMAT_S20_3LE
Definition: pcm.h:197
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:2516
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:7207
snd_pcm_chmap_long_name
const char * snd_pcm_chmap_long_name(enum snd_pcm_chmap_position val)
Definition: pcm.c:8441
SND_PCM_FORMAT_MPEG
@ SND_PCM_FORMAT_MPEG
Definition: pcm.h:175
snd_pcm_format_width
int snd_pcm_format_width(snd_pcm_format_t format)
Return the bit-width of the format.
Definition: pcm_misc.c:210
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:200
snd_pcm_sw_params_sizeof
size_t snd_pcm_sw_params_sizeof(void)
get size of snd_pcm_sw_params_t
Definition: pcm.c:6402
SND_PCM_FORMAT_S20
@ SND_PCM_FORMAT_S20
Definition: pcm.h:252
snd_pcm_hook_t
struct _snd_pcm_hook snd_pcm_hook_t
Definition: pcm.h:1238
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:7154
SND_PCM_TYPE_JACK
@ SND_PCM_TYPE_JACK
Definition: pcm.h:470
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:3698
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:7363
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:7101
snd_output_t
struct _snd_output snd_output_t
Internal structure for an output object.
Definition: output.h:56
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:7262
SND_PCM_FORMAT_GSM
@ SND_PCM_FORMAT_GSM
Definition: pcm.h:177
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:4241
snd_pcm_hw_free
int snd_pcm_hw_free(snd_pcm_t *pcm)
Remove PCM hardware configuration and free associated resources.
Definition: pcm.c:968
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:983
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:2464
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:4057
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:5694
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:4993
SND_PCM_STATE_SUSPENDED
@ SND_PCM_STATE_SUSPENDED
Definition: pcm.h:315
SND_CHMAP_FCH
@ SND_CHMAP_FCH
Definition: pcm.h:609
snd_pcm_status_dump
int snd_pcm_status_dump(snd_pcm_status_t *status, snd_output_t *out)
Dump status.
Definition: pcm.c:2408
snd_pcm_subformat_value
snd_pcm_subformat_t snd_pcm_subformat_value(const char *name)
get PCM sample subformat from name
Definition: pcm.c:2228
snd_pcm_channel_area_t::first
unsigned int first
Definition: pcm.h:496
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:6982
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:5419
SND_CHMAP_FL
@ SND_CHMAP_FL
Definition: pcm.h:593
SND_CHMAP_RL
@ SND_CHMAP_RL
Definition: pcm.h:595
SND_PCM_TYPE_COPY
@ SND_PCM_TYPE_COPY
Definition: pcm.h:438
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:4778
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:6708
SND_PCM_TYPE_INET
@ SND_PCM_TYPE_INET
Definition: pcm.h:436
snd_config_t
struct _snd_config snd_config_t
Internal structure for a configuration node object.
Definition: conf.h:69
SND_CHMAP_RRC
@ SND_CHMAP_RRC
Definition: pcm.h:605
snd_pcm_hw_params_t
struct _snd_pcm_hw_params snd_pcm_hw_params_t
Definition: pcm.h:64
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)
(DEPRECATED) Restrict a configuration space to have tick times in a given range
Definition: pcm.c:6247
snd_pcm_reset
int snd_pcm_reset(snd_pcm_t *pcm)
Reset PCM position.
Definition: pcm.c:1265
SND_PCM_AUDIO_TSTAMP_TYPE_DEFAULT
@ SND_PCM_AUDIO_TSTAMP_TYPE_DEFAULT
Definition: pcm.h:369
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:7132
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:4047
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:4017
snd_pcm_chmap_parse_string
snd_pcm_chmap_t * snd_pcm_chmap_parse_string(const char *str)
Definition: pcm.c:8546
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:848
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:3984
snd_async_callback_t
void(* snd_async_callback_t)(snd_async_handler_t *handler)
Async notification callback.
Definition: global.h:122
SND_PCM_FORMAT_S20_LE
@ SND_PCM_FORMAT_S20_LE
Definition: pcm.h:179
SND_PCM_TYPE_DMIX
@ SND_PCM_TYPE_DMIX
Definition: pcm.h:468
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:2284
SND_PCM_CLASS_GENERIC
@ SND_PCM_CLASS_GENERIC
Definition: pcm.h:81
snd_pcm_hw_params_set_drain_silence
int snd_pcm_hw_params_set_drain_silence(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int val)
Restrict a configuration space to fill the end of playback stream with silence when drain() is invoke...
Definition: pcm.c:5081
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:5743
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:2744
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_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:5062
SND_PCM_TYPE_DROUTE
@ SND_PCM_TYPE_DROUTE
Definition: pcm.h:460
SND_PCM_AUDIO_TSTAMP_TYPE_LINK_ESTIMATED
@ SND_PCM_AUDIO_TSTAMP_TYPE_LINK_ESTIMATED
Definition: pcm.h:372
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:4331
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:4007
snd_pcm_audio_tstamp_config_t::report_delay
unsigned int report_delay
Definition: pcm.h:381
SND_PCM_FORMAT_U16_BE
@ SND_PCM_FORMAT_U16_BE
Definition: pcm.h:139
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:1490
SND_PCM_TYPE_PLUG
@ SND_PCM_TYPE_PLUG
Definition: pcm.h:452
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:953
SND_CHMAP_FRC
@ SND_CHMAP_FRC
Definition: pcm.h:603
snd_spcm_duplex_type_t
snd_spcm_duplex_type_t
Definition: pcm.h:1340
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:4796
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:2395
snd_pcm_uframes_t
unsigned long snd_pcm_uframes_t
Definition: pcm.h:396
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:1152
snd_pcm_get_chmap
snd_pcm_chmap_t * snd_pcm_get_chmap(snd_pcm_t *pcm)
Definition: pcm.c:8311
snd_spcm_xrun_type_t
snd_spcm_xrun_type_t
Definition: pcm.h:1332
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:2546
SND_CHMAP_TYPE_VAR
@ SND_CHMAP_TYPE_VAR
Definition: pcm.h:583
snd_pcm_prepare
int snd_pcm_prepare(snd_pcm_t *pcm)
Prepare PCM for use.
Definition: pcm.c:1235
snd_pcm_name
const char * snd_pcm_name(snd_pcm_t *pcm)
get identifier of PCM handle
Definition: pcm.c:736
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:4759
SND_PCM_XRUN_NONE
@ SND_PCM_XRUN_NONE
Definition: pcm.h:335
SND_SPCM_LATENCY_MEDIUM
@ SND_SPCM_LATENCY_MEDIUM
Definition: pcm.h:1325
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:5894
SND_PCM_TYPE_ROUTE
@ SND_PCM_TYPE_ROUTE
Definition: pcm.h:450
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:6946
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:4315
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:6556
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:4488
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:4929
SND_PCM_CLASS_MODEM
@ SND_PCM_CLASS_MODEM
Definition: pcm.h:85
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:3105
SND_PCM_AUDIO_TSTAMP_TYPE_LINK_SYNCHRONIZED
@ SND_PCM_AUDIO_TSTAMP_TYPE_LINK_SYNCHRONIZED
Definition: pcm.h:373
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:7164
snd_pcm_drop
int snd_pcm_drop(snd_pcm_t *pcm)
Stop a PCM dropping pending frames.
Definition: pcm.c:1321
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:5040
SND_CHMAP_TRC
@ SND_CHMAP_TRC
Definition: pcm.h:617
SND_CHMAP_UNKNOWN
@ SND_CHMAP_UNKNOWN
Definition: pcm.h:590
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)
(DEPRECATED) Get xrun mode from a software configuration container
Definition: pcm.c:6535
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:7018
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:7400
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:3259
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:5543
snd_pcm_meter_get_now
snd_pcm_uframes_t snd_pcm_meter_get_now(snd_pcm_t *pcm)
Get meter "now" frame pointer from a SND_PCM_TYPE_METER PCM.
Definition: pcm_meter.c:925
SND_PCM_AUDIO_TSTAMP_TYPE_COMPAT
@ SND_PCM_AUDIO_TSTAMP_TYPE_COMPAT
Definition: pcm.h:368
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:4595
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:4375
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)
(DEPRECATED) Set minimum number of ticks to sleep inside a software configuration container
Definition: pcm.c:6626
snd_pcm_status_get_htstamp
void snd_pcm_status_get_htstamp(const snd_pcm_status_t *obj, snd_htimestamp_t *ptr)
Get "now" hi-res timestamp from a PCM status container.
Definition: pcm.c:7065
SND_PCM_AUDIO_TSTAMP_TYPE_LINK_ABSOLUTE
@ SND_PCM_AUDIO_TSTAMP_TYPE_LINK_ABSOLUTE
Definition: pcm.h:371
SND_PCM_FORMAT_UNKNOWN
@ SND_PCM_FORMAT_UNKNOWN
Definition: pcm.h:127
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:6047
SND_PCM_FORMAT_S32_LE
@ SND_PCM_FORMAT_S32_LE
Definition: pcm.h:149
SND_PCM_FORMAT_S8
@ SND_PCM_FORMAT_S8
Definition: pcm.h:129
snd_pcm_state_t
snd_pcm_state_t
Definition: pcm.h:299
SND_PCM_TYPE_ALAW
@ SND_PCM_TYPE_ALAW
Definition: pcm.h:442
snd_pcm_type_t
enum _snd_pcm_type snd_pcm_type_t
Definition: pcm.h:489
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:6002
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_FORMAT_U20_3LE
@ SND_PCM_FORMAT_U20_3LE
Definition: pcm.h:201
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:973
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_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:5795
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:5840
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:5988
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_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:5306
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:7273
snd_pcm_drain
int snd_pcm_drain(snd_pcm_t *pcm)
Stop a PCM preserving pending frames.
Definition: pcm.c:1358
snd_pcm_audio_tstamp_report_t::actual_type
unsigned int actual_type
Definition: pcm.h:389
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)
(DEPRECATED) Set xrun mode inside a software configuration container
Definition: pcm.c:6508
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_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:4128
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:951
SND_PCM_FORMAT_FLOAT
@ SND_PCM_FORMAT_FLOAT
Definition: pcm.h:246
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:4551
snd_pcm_info_sizeof
size_t snd_pcm_info_sizeof(void)
get size of snd_pcm_info_t
Definition: pcm.c:7174
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:3144
SND_PCM_TYPE_MULTI
@ SND_PCM_TYPE_MULTI
Definition: pcm.h:428
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:963
snd_pcm_audio_tstamp_report_t::accuracy_report
unsigned int accuracy_report
Definition: pcm.h:391
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:4391
snd_pcm_info_t
struct _snd_pcm_info snd_pcm_info_t
Definition: pcm.h:48
SND_CHMAP_MONO
@ SND_CHMAP_MONO
Definition: pcm.h:592
SND_CHMAP_FC
@ SND_CHMAP_FC
Definition: pcm.h:597
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:4222
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:5216
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:3578
SND_PCM_START_DATA
@ SND_PCM_START_DATA
Definition: pcm.h:326
SND_CHMAP_TFL
@ SND_CHMAP_TFL
Definition: pcm.h:612
SND_PCM_STATE_RUNNING
@ SND_PCM_STATE_RUNNING
Definition: pcm.h:307
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:1181
snd_pcm_chmap_from_string
unsigned int snd_pcm_chmap_from_string(const char *str)
Definition: pcm.c:8534
SND_PCM_FORMAT_U20
@ SND_PCM_FORMAT_U20
Definition: pcm.h:254
SND_CHMAP_LLFE
@ SND_CHMAP_LLFE
Definition: pcm.h:622
snd_pcm_hw_params_get_drain_silence
int snd_pcm_hw_params_get_drain_silence(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val)
Extract drain with the filling of silence samples from a configuration space.
Definition: pcm.c:5099
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:7197
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:5118
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:8737
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_get_xfer_align
int snd_pcm_sw_params_get_xfer_align(const snd_pcm_sw_params_t *params, snd_pcm_uframes_t *val)
(DEPRECATED) Get xfer align from a software configuration container
Definition: pcm.c:6753
snd_pcm_start
int snd_pcm_start(snd_pcm_t *pcm)
Start a PCM.
Definition: pcm.c:1290
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:5440
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:4305
SND_PCM_TSTAMP_MMAP
@ SND_PCM_TSTAMP_MMAP
Definition: pcm.h:350
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_STATE_PRIVATE1
@ SND_PCM_STATE_PRIVATE1
Definition: pcm.h:320
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:4445
snd_pcm_unlink
int snd_pcm_unlink(snd_pcm_t *pcm)
Remove a PCM from a linked group.
Definition: pcm.c:1732
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:5825
snd_pcm_hw_params_sizeof
size_t snd_pcm_hw_params_sizeof(void)
get size of snd_pcm_hw_params_t
Definition: pcm.c:4282
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:7251
snd_pcm_hw_params_is_perfect_drain
int snd_pcm_hw_params_is_perfect_drain(const snd_pcm_hw_params_t *params)
Check if hardware is capable of perfect drain.
Definition: pcm.c:3817
snd_pcm_access_mask_sizeof
size_t snd_pcm_access_mask_sizeof(void)
get size of snd_pcm_access_mask_t
Definition: pcm.c:3974
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:883
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:1232
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:6014
snd_pcm_type_name
const char * snd_pcm_type_name(snd_pcm_type_t type)
get name of PCM type
Definition: pcm.c:2323
snd_pcm_scope_ops_t
Definition: pcm.h:1259
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:6365
SND_PCM_FORMAT_U8
@ SND_PCM_FORMAT_U8
Definition: pcm.h:131
snd_async_handler_t
struct _snd_async_handler snd_async_handler_t
Internal structure for an async notification client handler.
Definition: global.h:115
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:6315
SND_PCM_TSTAMP_ENABLE
@ SND_PCM_TSTAMP_ENABLE
Definition: pcm.h:346
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:2448
SND_SPCM_LATENCY_STANDARD
@ SND_SPCM_LATENCY_STANDARD
Definition: pcm.h:1322
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)
(DEPRECATED) Restrict a configuration space with a maximum tick time
Definition: pcm.c:6230
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:3738
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:4252
snd_pcm_tstamp_t
snd_pcm_tstamp_t
Definition: pcm.h:342
SND_PCM_FORMAT_U32_LE
@ SND_PCM_FORMAT_U32_LE
Definition: pcm.h:153
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:4086
snd_pcm_chmap_position
snd_pcm_chmap_position
Definition: pcm.h:589
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)
(DEPRECATED) Restrict a configuration space to contain only its maximum tick time
Definition: pcm.c:6303
SND_PCM_FORMAT_S20_3BE
@ SND_PCM_FORMAT_S20_3BE
Definition: pcm.h:199
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:5969
snd_pcm_audio_tstamp_config_t
Definition: pcm.h:378
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)
(DEPRECATED) Get start mode from a software configuration container
Definition: pcm.c:6487
SND_PCM_ACCESS_MMAP_NONINTERLEAVED
@ SND_PCM_ACCESS_MMAP_NONINTERLEAVED
Definition: pcm.h:114
snd_pcm_class_t
snd_pcm_class_t
Definition: pcm.h:78
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_poll_descriptors
int snd_pcm_poll_descriptors(snd_pcm_t *pcm, struct pollfd *pfds, unsigned int space)
get poll descriptors
Definition: pcm.c:1823
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:4457
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:6592
snd_pcm_audio_tstamp_type_t
snd_pcm_audio_tstamp_type_t
Definition: pcm.h:363
SND_CHMAP_TYPE_FIXED
@ SND_CHMAP_TYPE_FIXED
Definition: pcm.h:582
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:4582
snd_pcm_status_sizeof
size_t snd_pcm_status_sizeof(void)
get size of snd_pcm_status_t
Definition: pcm.c:6959
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:3638
snd_pcm_channel_area_t::step
unsigned int step
Definition: pcm.h:498
SND_CHMAP_BLC
@ SND_CHMAP_BLC
Definition: pcm.h:625
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:6888
snd_pcm_chmap_query_t::map
snd_pcm_chmap_t map
Definition: pcm.h:647
SND_CHMAP_FR
@ SND_CHMAP_FR
Definition: pcm.h:594
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)
(DEPRECATED) Extract minimum tick time from a configuration space
Definition: pcm.c:6149
SND_CHMAP_TYPE_NONE
@ SND_CHMAP_TYPE_NONE
Definition: pcm.h:581
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:939
snd_pcm_chmap_t::channels
unsigned int channels
Definition: pcm.h:640
SND_PCM_FORMAT_IEC958_SUBFRAME_BE
@ SND_PCM_FORMAT_IEC958_SUBFRAME_BE
Definition: pcm.h:167
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:4231
SND_PCM_TSTAMP_TYPE_MONOTONIC_RAW
@ SND_PCM_TSTAMP_TYPE_MONOTONIC_RAW
Definition: pcm.h:358
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:3558
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:7184
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:5233
SND_PCM_TYPE_EXTPLUG
@ SND_PCM_TYPE_EXTPLUG
Definition: pcm.h:482
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:3922
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:6609
SND_PCM_FORMAT_U18_3LE
@ SND_PCM_FORMAT_U18_3LE
Definition: pcm.h:209
SND_CHMAP_SR
@ SND_CHMAP_SR
Definition: pcm.h:600
SND_PCM_FORMAT_IEC958_SUBFRAME
@ SND_PCM_FORMAT_IEC958_SUBFRAME
Definition: pcm.h:250
snd_htimestamp_t
struct timespec snd_htimestamp_t
Definition: global.h:154
snd_pcm_sync_id_t
Definition: pcm.h:502
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:4830
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:5579
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:5657
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:1647
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)
(DEPRECATED) Restrict a configuration space to have tick time nearest to a target
Definition: pcm.c:6265
SND_PCM_SUBFORMAT_MSBITS_20
@ SND_PCM_SUBFORMAT_MSBITS_20
Definition: pcm.h:292
SND_PCM_TYPE_DSHARE
@ SND_PCM_TYPE_DSHARE
Definition: pcm.h:474
SND_PCM_FORMAT_FLOAT64
@ SND_PCM_FORMAT_FLOAT64
Definition: pcm.h:248
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:4635
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:6839
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:5713
snd_pcm_type
snd_pcm_type_t snd_pcm_type(snd_pcm_t *pcm)
get type of PCM handle
Definition: pcm.c:749
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:2792
SND_PCM_SUBFORMAT_MSBITS_MAX
@ SND_PCM_SUBFORMAT_MSBITS_MAX
Definition: pcm.h:290
SND_PCM_ACCESS_RW_NONINTERLEAVED
@ SND_PCM_ACCESS_RW_NONINTERLEAVED
Definition: pcm.h:120
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:2129
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_CHMAP_TSL
@ SND_CHMAP_TSL
Definition: pcm.h:620
SND_CHMAP_BRC
@ SND_CHMAP_BRC
Definition: pcm.h:626
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:4712
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:7352
SND_SPCM_LATENCY_REALTIME
@ SND_SPCM_LATENCY_REALTIME
Definition: pcm.h:1328
SND_PCM_STREAM_CAPTURE
@ SND_PCM_STREAM_CAPTURE
Definition: pcm.h:105
SND_CHMAP_TFLC
@ SND_CHMAP_TFLC
Definition: pcm.h:618
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:4272
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:5725
snd_pcm_query_chmaps
snd_pcm_chmap_query_t ** snd_pcm_query_chmaps(snd_pcm_t *pcm)
Definition: pcm.c:8283
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:4432
SND_PCM_TYPE_IEC958
@ SND_PCM_TYPE_IEC958
Definition: pcm.h:476
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_CHMAP_TYPE_LAST
@ SND_CHMAP_TYPE_LAST
Definition: pcm.h:585
SND_CHMAP_RC
@ SND_CHMAP_RC
Definition: pcm.h:601
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:1865
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:6691
SND_PCM_FORMAT_S18_3LE
@ SND_PCM_FORMAT_S18_3LE
Definition: pcm.h:205
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:4845
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:2480
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:1455
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:1210
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:2141
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:4526
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:2204
SND_PCM_STATE_PAUSED
@ SND_PCM_STATE_PAUSED
Definition: pcm.h:313
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:5913
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:5675
SND_PCM_TYPE_ADPCM
@ SND_PCM_TYPE_ADPCM
Definition: pcm.h:446
SND_PCM_FORMAT_U20_LE
@ SND_PCM_FORMAT_U20_LE
Definition: pcm.h:183
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:3794
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:5154
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:3964
SND_PCM_FORMAT_U32
@ SND_PCM_FORMAT_U32
Definition: pcm.h:244
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:4875
SND_CHMAP_TYPE_PAIRED
@ SND_CHMAP_TYPE_PAIRED
Definition: pcm.h:584
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:4948
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:3074
SND_PCM_FORMAT_S32
@ SND_PCM_FORMAT_S32
Definition: pcm.h:242
SND_PCM_TYPE_HW
@ SND_PCM_TYPE_HW
Definition: pcm.h:423
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)
(DEPRECATED) Verify if a tick time is available inside a configuration space for a PCM
Definition: pcm.c:6185
SND_PCM_FORMAT_MU_LAW
@ SND_PCM_FORMAT_MU_LAW
Definition: pcm.h:169
SND_PCM_TYPE_RATE
@ SND_PCM_TYPE_RATE
Definition: pcm.h:448
SND_PCM_FORMAT_S24_3LE
@ SND_PCM_FORMAT_S24_3LE
Definition: pcm.h:189
SND_PCM_FORMAT_FLOAT64_LE
@ SND_PCM_FORMAT_FLOAT64_LE
Definition: pcm.h:161
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:6992
snd_pcm_sw_params_t
struct _snd_pcm_sw_params snd_pcm_sw_params_t
Definition: pcm.h:67
snd_pcm_subformat_t
snd_pcm_subformat_t
Definition: pcm.h:284
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:4348
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:5201
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:4605
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_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:3718
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:4414
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)
(DEPRECATED) Restrict a configuration space to contain only its minimum tick time
Definition: pcm.c:6284
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:5370
SND_PCM_FORMAT_S16_LE
@ SND_PCM_FORMAT_S16_LE
Definition: pcm.h:133
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:4149
SND_PCM_FORMAT_U16_LE
@ SND_PCM_FORMAT_U16_LE
Definition: pcm.h:137
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:6087
SND_PCM_SUBFORMAT_STD
@ SND_PCM_SUBFORMAT_STD
Definition: pcm.h:288
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:7374
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:7003
SND_PCM_FORMAT_SPECIAL
@ SND_PCM_FORMAT_SPECIAL
Definition: pcm.h:187
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:5328
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_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:5170
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:5486
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:4979
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:4743
SND_PCM_TYPE_SHM
@ SND_PCM_TYPE_SHM
Definition: pcm.h:434
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:5610
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:5136
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:1569
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:5287
snd_pcm_chmap_type
snd_pcm_chmap_type
Definition: pcm.h:580
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_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:6920
snd_timestamp_t
struct timeval snd_timestamp_t
Definition: global.h:152
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:4675
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:225
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:3658
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:7317
snd_pcm_start_mode_name
const char * snd_pcm_start_mode_name(snd_pcm_start_t mode)
(DEPRECATED) get name of PCM start mode setting
Definition: pcm.c:2252
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:4892
snd_pcm_subformat_mask_t
struct _snd_pcm_subformat_mask snd_pcm_subformat_mask_t
Definition: pcm.h:75
SND_CHMAP_TC
@ SND_CHMAP_TC
Definition: pcm.h:611
SND_CHMAP_FRH
@ SND_CHMAP_FRH
Definition: pcm.h:610
SND_PCM_TYPE_MIX
@ SND_PCM_TYPE_MIX
Definition: pcm.h:458
SND_CHMAP_TFR
@ SND_CHMAP_TFR
Definition: pcm.h:613
snd_pcm_set_chmap
int snd_pcm_set_chmap(snd_pcm_t *pcm, const snd_pcm_chmap_t *map)
Definition: pcm.c:8324
snd_pcm_chmap_t
Definition: pcm.h:639
snd_pcm_xrun_t
snd_pcm_xrun_t
Definition: pcm.h:333
SND_PCM_FORMAT_S24_3BE
@ SND_PCM_FORMAT_S24_3BE
Definition: pcm.h:191
snd_pcm_dump
int snd_pcm_dump(snd_pcm_t *pcm, snd_output_t *out)
Dump PCM info.
Definition: pcm.c:2429
SND_PCM_CLASS_DIGITIZER
@ SND_PCM_CLASS_DIGITIZER
Definition: pcm.h:87
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:882
SND_PCM_TYPE_LINEAR
@ SND_PCM_TYPE_LINEAR
Definition: pcm.h:440
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:6721
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_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:6067
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:4699
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:7295
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:2153
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:2774
snd_pcm_close
int snd_pcm_close(snd_pcm_t *pcm)
close PCM handle
Definition: pcm.c:776
SND_CHMAP_NA
@ SND_CHMAP_NA
Definition: pcm.h:591
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:5463
SND_PCM_SUBCLASS_GENERIC_MIX
@ SND_PCM_SUBCLASS_GENERIC_MIX
Definition: pcm.h:94
snd_pcm_stream_t
snd_pcm_stream_t
Definition: pcm.h:101
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:911
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:5948
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:6447
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:3050
SND_CHMAP_FLC
@ SND_CHMAP_FLC
Definition: pcm.h:602
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)
(DEPRECATED) Set xfer align inside a software configuration container
Definition: pcm.c:6738
SND_PCM_FORMAT_S24_BE
@ SND_PCM_FORMAT_S24_BE
Definition: pcm.h:143
snd_pcm_scope_t
struct _snd_pcm_scope snd_pcm_scope_t
Definition: pcm.h:519
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:2338
SND_PCM_TYPE_IOPLUG
@ SND_PCM_TYPE_IOPLUG
Definition: pcm.h:480
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:6969
SND_CHMAP_RLFE
@ SND_CHMAP_RLFE
Definition: pcm.h:623
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:4138
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:7240
SND_PCM_FORMAT_FLOAT64_BE
@ SND_PCM_FORMAT_FLOAT64_BE
Definition: pcm.h:163
SND_PCM_TYPE_FILE
@ SND_PCM_TYPE_FILE
Definition: pcm.h:430
snd_pcm_link
int snd_pcm_link(snd_pcm_t *pcm1, snd_pcm_t *pcm2)
Link two PCMs.
Definition: pcm.c:1714
snd_pcm_audio_tstamp_config_t::type_requested
unsigned int type_requested
Definition: pcm.h:380
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:6425
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:7513
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:4620
SND_CHMAP_SL
@ SND_CHMAP_SL
Definition: pcm.h:599
SND_PCM_TYPE_METER
@ SND_PCM_TYPE_METER
Definition: pcm.h:456
snd_pcm_hook_func_t
int(* snd_pcm_hook_func_t)(snd_pcm_hook_t *hook)
Definition: pcm.h:1240
SND_PCM_STATE_PREPARED
@ SND_PCM_STATE_PREPARED
Definition: pcm.h:305
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:4189
SND_PCM_AUDIO_TSTAMP_TYPE_LINK
@ SND_PCM_AUDIO_TSTAMP_TYPE_LINK
Definition: pcm.h:370
SND_PCM_TYPE_LBSERVER
@ SND_PCM_TYPE_LBSERVER
Definition: pcm.h:462
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:3431
SND_PCM_ACCESS_MMAP_COMPLEX
@ SND_PCM_ACCESS_MMAP_COMPLEX
Definition: pcm.h:116
snd_pcm_access_mask_t
struct _snd_pcm_access_mask snd_pcm_access_mask_t
Definition: pcm.h:71
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:7339
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:8785
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:5779
SND_PCM_TYPE_MMAP_EMUL
@ SND_PCM_TYPE_MMAP_EMUL
Definition: pcm.h:484
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_rewindable
snd_pcm_sframes_t snd_pcm_rewindable(snd_pcm_t *pcm)
Get safe count of frames which can be rewinded.
Definition: pcm.c:1424
snd_pcm_access_t
snd_pcm_access_t
Definition: pcm.h:110
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:993
SND_PCM_SUBFORMAT_MSBITS_24
@ SND_PCM_SUBFORMAT_MSBITS_24
Definition: pcm.h:294
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:5270
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:4511
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:4501
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:5385
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:5251
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:7218
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:4360
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_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:7284
SND_CHMAP_TFRC
@ SND_CHMAP_TFRC
Definition: pcm.h:619
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_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:3778
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:4404
SND_CHMAP_TFC
@ SND_CHMAP_TFC
Definition: pcm.h:614
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:5929
snd_pcm_chmap_type_name
const char * snd_pcm_chmap_type_name(enum snd_pcm_chmap_type val)
Definition: pcm.c:8355
SND_SPCM_DUPLEX_PEDANTIC
@ SND_SPCM_DUPLEX_PEDANTIC
Definition: pcm.h:1344
SND_PCM_TYPE_NULL
@ SND_PCM_TYPE_NULL
Definition: pcm.h:432
SND_PCM_SUBFORMAT_UNKNOWN
@ SND_PCM_SUBFORMAT_UNKNOWN
Definition: pcm.h:286
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:4099
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:3837
SND_PCM_STREAM_PLAYBACK
@ SND_PCM_STREAM_PLAYBACK
Definition: pcm.h:103
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:5761
snd_pcm_chmap_name
const char * snd_pcm_chmap_name(enum snd_pcm_chmap_position val)
Definition: pcm.c:8388
SND_SPCM_XRUN_STOP
@ SND_SPCM_XRUN_STOP
Definition: pcm.h:1336
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:4169
SND_PCM_TYPE_SOFTVOL
@ SND_PCM_TYPE_SOFTVOL
Definition: pcm.h:478
SND_PCM_STATE_XRUN
@ SND_PCM_STATE_XRUN
Definition: pcm.h:309
snd_pcm_wait
int snd_pcm_wait(snd_pcm_t *pcm, int timeout)
Wait for a PCM to become ready.
Definition: pcm.c:2903
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:4202
snd_pcm_tstamp_type_t
snd_pcm_tstamp_type_t
Definition: pcm.h:355
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:6862
SND_PCM_FORMAT_IEC958_SUBFRAME_LE
@ SND_PCM_FORMAT_IEC958_SUBFRAME_LE
Definition: pcm.h:165
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:4472
SND_PCM_FORMAT_IMA_ADPCM
@ SND_PCM_FORMAT_IMA_ADPCM
Definition: pcm.h:173
snd_pcm_state_name
const char * snd_pcm_state_name(const snd_pcm_state_t state)
get name of PCM state
Definition: pcm.c:2308
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:5640
snd_pcm_resume
int snd_pcm_resume(snd_pcm_t *pcm)
Resume from suspend, no samples are lost.
Definition: pcm.c:1181
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:1608
SND_SPCM_XRUN_IGNORE
@ SND_SPCM_XRUN_IGNORE
Definition: pcm.h:1334
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:5561
SND_PCM_FORMAT_U24_BE
@ SND_PCM_FORMAT_U24_BE
Definition: pcm.h:147
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:6030
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:1001
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:7115
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:3758
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:4727
SND_PCM_FORMAT_S24_LE
@ SND_PCM_FORMAT_S24_LE
Definition: pcm.h:141
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:2216
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_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_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:150
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:6773
SND_PCM_STATE_DRAINING
@ SND_PCM_STATE_DRAINING
Definition: pcm.h:311
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:4860
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:4650
SND_PCM_TYPE_MULAW
@ SND_PCM_TYPE_MULAW
Definition: pcm.h:444
snd_pcm_format_value
snd_pcm_format_t snd_pcm_format_value(const char *name)
get PCM sample format from name
Definition: pcm.c:2177
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:5525
SND_PCM_START_EXPLICIT
@ SND_PCM_START_EXPLICIT
Definition: pcm.h:328
SND_CHMAP_RLC
@ SND_CHMAP_RLC
Definition: pcm.h:604
snd_pcm_nonblock
int snd_pcm_nonblock(snd_pcm_t *pcm, int nonblock)
set nonblock mode
Definition: pcm.c:812
SND_PCM_FORMAT_U20_BE
@ SND_PCM_FORMAT_U20_BE
Definition: pcm.h:185
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:4566
snd_pcm_free_chmaps
void snd_pcm_free_chmaps(snd_pcm_chmap_query_t **maps)
Definition: pcm.c:8294
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