2 * PCM Interface - local header file
3 * Copyright (c) 2000 by Jaroslav Kysela <perex@perex.cz>
4 * Abramo Bagnara <abramo@alsa-project.org>
7 * This library is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU Lesser General Public License as
9 * published by the Free Software Foundation; either version 2.1 of
10 * the License, or (at your option) any later version.
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU Lesser General Public License for more details.
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with this library; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
28 #define _snd_mask sndrv_mask
29 #define _snd_pcm_access_mask _snd_mask
30 #define _snd_pcm_format_mask _snd_mask
31 #define _snd_pcm_subformat_mask _snd_mask
35 #define SND_INTERVAL_INLINE
38 #define SND_MASK_INLINE
41 typedef enum sndrv_pcm_hw_param snd_pcm_hw_param_t;
42 #define SND_PCM_HW_PARAM_ACCESS SNDRV_PCM_HW_PARAM_ACCESS
43 #define SND_PCM_HW_PARAM_FIRST_MASK SNDRV_PCM_HW_PARAM_FIRST_MASK
44 #define SND_PCM_HW_PARAM_FORMAT SNDRV_PCM_HW_PARAM_FORMAT
45 #define SND_PCM_HW_PARAM_SUBFORMAT SNDRV_PCM_HW_PARAM_SUBFORMAT
46 #define SND_PCM_HW_PARAM_LAST_MASK SNDRV_PCM_HW_PARAM_LAST_MASK
47 #define SND_PCM_HW_PARAM_SAMPLE_BITS SNDRV_PCM_HW_PARAM_SAMPLE_BITS
48 #define SND_PCM_HW_PARAM_FIRST_INTERVAL SNDRV_PCM_HW_PARAM_FIRST_INTERVAL
49 #define SND_PCM_HW_PARAM_FRAME_BITS SNDRV_PCM_HW_PARAM_FRAME_BITS
50 #define SND_PCM_HW_PARAM_CHANNELS SNDRV_PCM_HW_PARAM_CHANNELS
51 #define SND_PCM_HW_PARAM_RATE SNDRV_PCM_HW_PARAM_RATE
52 #define SND_PCM_HW_PARAM_PERIOD_TIME SNDRV_PCM_HW_PARAM_PERIOD_TIME
53 #define SND_PCM_HW_PARAM_PERIOD_SIZE SNDRV_PCM_HW_PARAM_PERIOD_SIZE
54 #define SND_PCM_HW_PARAM_PERIOD_BYTES SNDRV_PCM_HW_PARAM_PERIOD_BYTES
55 #define SND_PCM_HW_PARAM_PERIODS SNDRV_PCM_HW_PARAM_PERIODS
56 #define SND_PCM_HW_PARAM_BUFFER_TIME SNDRV_PCM_HW_PARAM_BUFFER_TIME
57 #define SND_PCM_HW_PARAM_BUFFER_SIZE SNDRV_PCM_HW_PARAM_BUFFER_SIZE
58 #define SND_PCM_HW_PARAM_BUFFER_BYTES SNDRV_PCM_HW_PARAM_BUFFER_BYTES
59 #define SND_PCM_HW_PARAM_TICK_TIME SNDRV_PCM_HW_PARAM_TICK_TIME
60 #define SND_PCM_HW_PARAM_LAST_INTERVAL SNDRV_PCM_HW_PARAM_LAST_INTERVAL
61 #define SND_PCM_HW_PARAM_LAST_MASK SNDRV_PCM_HW_PARAM_LAST_MASK
62 #define SND_PCM_HW_PARAM_FIRST_MASK SNDRV_PCM_HW_PARAM_FIRST_MASK
63 #define SND_PCM_HW_PARAM_LAST_INTERVAL SNDRV_PCM_HW_PARAM_LAST_INTERVAL
64 #define SND_PCM_HW_PARAM_FIRST_INTERVAL SNDRV_PCM_HW_PARAM_FIRST_INTERVAL
66 /** device accepts mmaped access */
67 #define SND_PCM_INFO_MMAP SNDRV_PCM_INFO_MMAP
68 /** device accepts mmaped access with sample resolution */
69 #define SND_PCM_INFO_MMAP_VALID SNDRV_PCM_INFO_MMAP_VALID
70 /** device is doing double buffering */
71 #define SND_PCM_INFO_DOUBLE SNDRV_PCM_INFO_DOUBLE
72 /** device transfers samples in batch */
73 #define SND_PCM_INFO_BATCH SNDRV_PCM_INFO_BATCH
74 /** device accepts interleaved samples */
75 #define SND_PCM_INFO_INTERLEAVED SNDRV_PCM_INFO_INTERLEAVED
76 /** device accepts non-interleaved samples */
77 #define SND_PCM_INFO_NONINTERLEAVED SNDRV_PCM_INFO_NONINTERLEAVED
78 /** device accepts complex sample organization */
79 #define SND_PCM_INFO_COMPLEX SNDRV_PCM_INFO_COMPLEX
80 /** device is capable block transfers */
81 #define SND_PCM_INFO_BLOCK_TRANSFER SNDRV_PCM_INFO_BLOCK_TRANSFER
82 /** device can detect DAC/ADC overrange */
83 #define SND_PCM_INFO_OVERRANGE SNDRV_PCM_INFO_OVERRANGE
84 /** device supports resume */
85 #define SND_PCM_INFO_RESUME SNDRV_PCM_INFO_RESUME
86 /** device is capable to pause */
87 #define SND_PCM_INFO_PAUSE SNDRV_PCM_INFO_PAUSE
88 /** device can do only half duplex */
89 #define SND_PCM_INFO_HALF_DUPLEX SNDRV_PCM_INFO_HALF_DUPLEX
90 /** device can do only joint duplex (same parameters) */
91 #define SND_PCM_INFO_JOINT_DUPLEX SNDRV_PCM_INFO_JOINT_DUPLEX
92 /** device can do a kind of synchronized start */
93 #define SND_PCM_INFO_SYNC_START SNDRV_PCM_INFO_SYNC_START
95 #define SND_PCM_HW_PARAMS_NORESAMPLE SNDRV_PCM_HW_PARAMS_NORESAMPLE
96 #define SND_PCM_HW_PARAMS_EXPORT_BUFFER SNDRV_PCM_HW_PARAMS_EXPORT_BUFFER
98 typedef struct _snd_pcm_rbptr {
100 volatile snd_pcm_uframes_t *ptr;
104 snd_pcm_t **link_dst;
106 void (*changed)(snd_pcm_t *pcm, snd_pcm_t *src);
109 typedef struct _snd_pcm_channel_info {
110 unsigned int channel;
111 void *addr; /* base address of channel samples */
112 unsigned int first; /* offset to first sample in bits */
113 unsigned int step; /* samples distance in bits */
114 enum { SND_PCM_AREA_SHM, SND_PCM_AREA_MMAP, SND_PCM_AREA_LOCAL } type;
117 struct snd_shm_area *area;
126 } snd_pcm_channel_info_t;
129 int (*close)(snd_pcm_t *pcm);
130 int (*nonblock)(snd_pcm_t *pcm, int nonblock);
131 int (*async)(snd_pcm_t *pcm, int sig, pid_t pid);
132 int (*info)(snd_pcm_t *pcm, snd_pcm_info_t *info);
133 int (*hw_refine)(snd_pcm_t *pcm, snd_pcm_hw_params_t *params);
134 int (*hw_params)(snd_pcm_t *pcm, snd_pcm_hw_params_t *params);
135 int (*hw_free)(snd_pcm_t *pcm);
136 int (*sw_params)(snd_pcm_t *pcm, snd_pcm_sw_params_t *params);
137 int (*channel_info)(snd_pcm_t *pcm, snd_pcm_channel_info_t *info);
138 void (*dump)(snd_pcm_t *pcm, snd_output_t *out);
139 int (*mmap)(snd_pcm_t *pcm);
140 int (*munmap)(snd_pcm_t *pcm);
144 int (*status)(snd_pcm_t *pcm, snd_pcm_status_t *status);
145 int (*prepare)(snd_pcm_t *pcm);
146 int (*reset)(snd_pcm_t *pcm);
147 int (*start)(snd_pcm_t *pcm);
148 int (*drop)(snd_pcm_t *pcm);
149 int (*drain)(snd_pcm_t *pcm);
150 int (*pause)(snd_pcm_t *pcm, int enable);
151 snd_pcm_state_t (*state)(snd_pcm_t *pcm);
152 int (*hwsync)(snd_pcm_t *pcm);
153 int (*delay)(snd_pcm_t *pcm, snd_pcm_sframes_t *delayp);
154 int (*resume)(snd_pcm_t *pcm);
155 int (*link)(snd_pcm_t *pcm1, snd_pcm_t *pcm2);
156 int (*link_slaves)(snd_pcm_t *pcm, snd_pcm_t *master);
157 int (*unlink)(snd_pcm_t *pcm);
158 snd_pcm_sframes_t (*rewind)(snd_pcm_t *pcm, snd_pcm_uframes_t frames);
159 snd_pcm_sframes_t (*forward)(snd_pcm_t *pcm, snd_pcm_uframes_t frames);
160 snd_pcm_sframes_t (*writei)(snd_pcm_t *pcm, const void *buffer, snd_pcm_uframes_t size);
161 snd_pcm_sframes_t (*writen)(snd_pcm_t *pcm, void **bufs, snd_pcm_uframes_t size);
162 snd_pcm_sframes_t (*readi)(snd_pcm_t *pcm, void *buffer, snd_pcm_uframes_t size);
163 snd_pcm_sframes_t (*readn)(snd_pcm_t *pcm, void **bufs, snd_pcm_uframes_t size);
164 snd_pcm_sframes_t (*avail_update)(snd_pcm_t *pcm);
165 snd_pcm_sframes_t (*mmap_commit)(snd_pcm_t *pcm, snd_pcm_uframes_t offset, snd_pcm_uframes_t size);
166 int (*poll_descriptors_count)(snd_pcm_t *pcm);
167 int (*poll_descriptors)(snd_pcm_t *pcm, struct pollfd *pfds, unsigned int space);
168 int (*poll_revents)(snd_pcm_t *pcm, struct pollfd *pfds, unsigned int nfds, unsigned short *revents);
169 } snd_pcm_fast_ops_t;
175 snd_pcm_stream_t stream;
179 unsigned short poll_events;
181 snd_pcm_access_t access; /* access mode */
182 snd_pcm_format_t format; /* SND_PCM_FORMAT_* */
183 snd_pcm_subformat_t subformat; /* subformat */
184 unsigned int channels; /* channels */
185 unsigned int rate; /* rate in Hz */
186 snd_pcm_uframes_t period_size;
187 unsigned int period_time; /* period duration */
188 snd_interval_t periods;
189 unsigned int tick_time;
190 snd_pcm_tstamp_t tstamp_mode; /* timestamp mode */
191 unsigned int period_step;
192 unsigned int sleep_min;
193 snd_pcm_uframes_t avail_min; /* min avail frames for wakeup */
194 snd_pcm_uframes_t start_threshold;
195 snd_pcm_uframes_t stop_threshold;
196 snd_pcm_uframes_t silence_threshold; /* Silence filling happens when
197 noise is nearest than this */
198 snd_pcm_uframes_t silence_size; /* Silence filling size */
199 snd_pcm_uframes_t xfer_align; /* xfer size need to be a multiple */
200 snd_pcm_uframes_t boundary; /* pointers wrap point */
201 unsigned int info; /* Info for returned setup */
202 unsigned int msbits; /* used most significant bits */
203 unsigned int rate_num; /* rate numerator */
204 unsigned int rate_den; /* rate denominator */
205 unsigned int hw_flags; /* actual hardware flags */
206 snd_pcm_uframes_t fifo_size; /* chip FIFO size in frames */
207 snd_pcm_uframes_t buffer_size;
208 snd_interval_t buffer_time;
209 unsigned int sample_bits;
210 unsigned int frame_bits;
211 snd_pcm_rbptr_t appl;
213 snd_pcm_uframes_t min_align;
214 unsigned int mmap_rw: 1; /* use always mmapped buffer */
215 unsigned int mmap_shadow: 1; /* don't call actual mmap,
216 * use the mmaped buffer of the slave
218 unsigned int donot_close: 1; /* don't close this PCM */
219 snd_pcm_channel_info_t *mmap_channels;
220 snd_pcm_channel_area_t *running_areas;
221 snd_pcm_channel_area_t *stopped_areas;
223 snd_pcm_fast_ops_t *fast_ops;
225 snd_pcm_t *fast_op_arg;
227 struct list_head async_handlers;
230 int snd_pcm_new(snd_pcm_t **pcmp, snd_pcm_type_t type, const char *name,
231 snd_pcm_stream_t stream, int mode);
232 int snd_pcm_free(snd_pcm_t *pcm);
234 void snd_pcm_areas_from_buf(snd_pcm_t *pcm, snd_pcm_channel_area_t *areas, void *buf);
235 void snd_pcm_areas_from_bufs(snd_pcm_t *pcm, snd_pcm_channel_area_t *areas, void **bufs);
237 int snd_pcm_async(snd_pcm_t *pcm, int sig, pid_t pid);
238 int snd_pcm_mmap(snd_pcm_t *pcm);
239 int snd_pcm_munmap(snd_pcm_t *pcm);
240 int snd_pcm_mmap_ready(snd_pcm_t *pcm);
241 void snd_pcm_set_hw_ptr(snd_pcm_t *pcm, volatile snd_pcm_uframes_t *hw_ptr, int fd, off_t offset);
242 void snd_pcm_set_appl_ptr(snd_pcm_t *pcm, volatile snd_pcm_uframes_t *appl_ptr, int fd, off_t offset);
243 void snd_pcm_link_hw_ptr(snd_pcm_t *pcm, snd_pcm_t *slave);
244 void snd_pcm_link_appl_ptr(snd_pcm_t *pcm, snd_pcm_t *slave);
245 void snd_pcm_unlink_hw_ptr(snd_pcm_t *pcm, snd_pcm_t *slave);
246 void snd_pcm_unlink_appl_ptr(snd_pcm_t *pcm, snd_pcm_t *slave);
247 snd_pcm_sframes_t snd_pcm_mmap_appl_ptr(snd_pcm_t *pcm, off_t offset);
248 void snd_pcm_mmap_appl_backward(snd_pcm_t *pcm, snd_pcm_uframes_t frames);
249 void snd_pcm_mmap_appl_forward(snd_pcm_t *pcm, snd_pcm_uframes_t frames);
250 void snd_pcm_mmap_hw_backward(snd_pcm_t *pcm, snd_pcm_uframes_t frames);
251 void snd_pcm_mmap_hw_forward(snd_pcm_t *pcm, snd_pcm_uframes_t frames);
253 snd_pcm_sframes_t snd_pcm_mmap_writei(snd_pcm_t *pcm, const void *buffer, snd_pcm_uframes_t size);
254 snd_pcm_sframes_t snd_pcm_mmap_readi(snd_pcm_t *pcm, void *buffer, snd_pcm_uframes_t size);
255 snd_pcm_sframes_t snd_pcm_mmap_writen(snd_pcm_t *pcm, void **bufs, snd_pcm_uframes_t size);
256 snd_pcm_sframes_t snd_pcm_mmap_readn(snd_pcm_t *pcm, void **bufs, snd_pcm_uframes_t size);
258 typedef snd_pcm_sframes_t (*snd_pcm_xfer_areas_func_t)(snd_pcm_t *pcm,
259 const snd_pcm_channel_area_t *areas,
260 snd_pcm_uframes_t offset,
261 snd_pcm_uframes_t size);
263 snd_pcm_sframes_t snd_pcm_read_areas(snd_pcm_t *pcm, const snd_pcm_channel_area_t *areas,
264 snd_pcm_uframes_t offset, snd_pcm_uframes_t size,
265 snd_pcm_xfer_areas_func_t func);
266 snd_pcm_sframes_t snd_pcm_write_areas(snd_pcm_t *pcm, const snd_pcm_channel_area_t *areas,
267 snd_pcm_uframes_t offset, snd_pcm_uframes_t size,
268 snd_pcm_xfer_areas_func_t func);
269 snd_pcm_sframes_t snd_pcm_read_mmap(snd_pcm_t *pcm, snd_pcm_uframes_t offset,
270 snd_pcm_uframes_t size);
271 snd_pcm_sframes_t snd_pcm_write_mmap(snd_pcm_t *pcm, snd_pcm_uframes_t offset,
272 snd_pcm_uframes_t size);
273 static inline int snd_pcm_channel_info(snd_pcm_t *pcm, snd_pcm_channel_info_t *info)
275 return pcm->ops->channel_info(pcm, info);
277 int snd_pcm_channel_info_shm(snd_pcm_t *pcm, snd_pcm_channel_info_t *info, int shmid);
278 int _snd_pcm_poll_descriptor(snd_pcm_t *pcm);
279 #define _snd_pcm_link_descriptor _snd_pcm_poll_descriptor /* FIXME */
280 #define _snd_pcm_async_descriptor _snd_pcm_poll_descriptor /* FIXME */
282 /* handle special error cases */
283 static inline int snd_pcm_check_error(snd_pcm_t *pcm, int err)
286 switch (snd_pcm_state(pcm)) {
287 case SND_PCM_STATE_XRUN:
289 case SND_PCM_STATE_SUSPENDED:
291 case SND_PCM_STATE_DISCONNECTED:
300 static inline snd_pcm_uframes_t snd_pcm_mmap_playback_avail(snd_pcm_t *pcm)
302 snd_pcm_sframes_t avail;
303 avail = *pcm->hw.ptr + pcm->buffer_size - *pcm->appl.ptr;
305 avail += pcm->boundary;
306 else if ((snd_pcm_uframes_t) avail >= pcm->boundary)
307 avail -= pcm->boundary;
311 static inline snd_pcm_uframes_t snd_pcm_mmap_capture_avail(snd_pcm_t *pcm)
313 snd_pcm_sframes_t avail;
314 avail = *pcm->hw.ptr - *pcm->appl.ptr;
316 avail += pcm->boundary;
320 static inline snd_pcm_uframes_t snd_pcm_mmap_avail(snd_pcm_t *pcm)
322 if (pcm->stream == SND_PCM_STREAM_PLAYBACK)
323 return snd_pcm_mmap_playback_avail(pcm);
325 return snd_pcm_mmap_capture_avail(pcm);
328 static inline snd_pcm_sframes_t snd_pcm_mmap_playback_hw_avail(snd_pcm_t *pcm)
330 return pcm->buffer_size - snd_pcm_mmap_playback_avail(pcm);
333 static inline snd_pcm_sframes_t snd_pcm_mmap_capture_hw_avail(snd_pcm_t *pcm)
335 return pcm->buffer_size - snd_pcm_mmap_capture_avail(pcm);
338 static inline snd_pcm_sframes_t snd_pcm_mmap_hw_avail(snd_pcm_t *pcm)
340 snd_pcm_sframes_t avail;
341 avail = *pcm->hw.ptr - *pcm->appl.ptr;
342 if (pcm->stream == SND_PCM_STREAM_PLAYBACK)
343 avail += pcm->buffer_size;
345 avail += pcm->boundary;
346 return pcm->buffer_size - avail;
349 static inline const snd_pcm_channel_area_t *snd_pcm_mmap_areas(snd_pcm_t *pcm)
351 if (pcm->stopped_areas &&
352 snd_pcm_state(pcm) != SND_PCM_STATE_RUNNING)
353 return pcm->stopped_areas;
354 return pcm->running_areas;
357 static inline snd_pcm_uframes_t snd_pcm_mmap_offset(snd_pcm_t *pcm)
360 return *pcm->appl.ptr % pcm->buffer_size;
363 static inline snd_pcm_uframes_t snd_pcm_mmap_hw_offset(snd_pcm_t *pcm)
366 return *pcm->hw.ptr % pcm->buffer_size;
369 static inline snd_pcm_uframes_t snd_pcm_mmap_playback_delay(snd_pcm_t *pcm)
371 return snd_pcm_mmap_playback_hw_avail(pcm);
374 static inline snd_pcm_uframes_t snd_pcm_mmap_capture_delay(snd_pcm_t *pcm)
376 return snd_pcm_mmap_capture_hw_avail(pcm);
379 static inline snd_pcm_sframes_t snd_pcm_mmap_delay(snd_pcm_t *pcm)
381 if (pcm->stream == SND_PCM_STREAM_PLAYBACK)
382 return snd_pcm_mmap_playback_delay(pcm);
384 return snd_pcm_mmap_capture_delay(pcm);
387 static inline void *snd_pcm_channel_area_addr(const snd_pcm_channel_area_t *area, snd_pcm_uframes_t offset)
389 unsigned int bitofs = area->first + area->step * offset;
390 assert(bitofs % 8 == 0);
391 return (char *) area->addr + bitofs / 8;
394 static inline unsigned int snd_pcm_channel_area_step(const snd_pcm_channel_area_t *area)
396 assert(area->step % 8 == 0);
397 return area->step / 8;
400 static inline snd_pcm_sframes_t _snd_pcm_writei(snd_pcm_t *pcm, const void *buffer, snd_pcm_uframes_t size)
402 return pcm->fast_ops->writei(pcm->fast_op_arg, buffer, size);
405 static inline snd_pcm_sframes_t _snd_pcm_writen(snd_pcm_t *pcm, void **bufs, snd_pcm_uframes_t size)
407 return pcm->fast_ops->writen(pcm->fast_op_arg, bufs, size);
410 static inline snd_pcm_sframes_t _snd_pcm_readi(snd_pcm_t *pcm, void *buffer, snd_pcm_uframes_t size)
412 return pcm->fast_ops->readi(pcm->fast_op_arg, buffer, size);
415 static inline snd_pcm_sframes_t _snd_pcm_readn(snd_pcm_t *pcm, void **bufs, snd_pcm_uframes_t size)
417 return pcm->fast_ops->readn(pcm->fast_op_arg, bufs, size);
420 static inline int muldiv(int a, int b, int c, int *r)
422 int64_t n = (int64_t)a * b;
436 static inline int muldiv_down(int a, int b, int c)
438 int64_t v = (int64_t)a * b / c;
448 static inline int muldiv_near(int a, int b, int c)
451 int n = muldiv(a, b, c, &r);
452 if (r >= (c + 1) / 2)
457 int snd_pcm_hw_refine(snd_pcm_t *pcm, snd_pcm_hw_params_t *params);
458 int _snd_pcm_hw_params(snd_pcm_t *pcm, snd_pcm_hw_params_t *params);
459 int snd_pcm_hw_refine_soft(snd_pcm_t *pcm, snd_pcm_hw_params_t *params);
460 int snd_pcm_hw_refine_slave(snd_pcm_t *pcm, snd_pcm_hw_params_t *params,
461 int (*cprepare)(snd_pcm_t *pcm,
462 snd_pcm_hw_params_t *params),
463 int (*cchange)(snd_pcm_t *pcm,
464 snd_pcm_hw_params_t *params,
465 snd_pcm_hw_params_t *sparams),
466 int (*sprepare)(snd_pcm_t *pcm,
467 snd_pcm_hw_params_t *params),
468 int (*schange)(snd_pcm_t *pcm,
469 snd_pcm_hw_params_t *params,
470 snd_pcm_hw_params_t *sparams),
471 int (*srefine)(snd_pcm_t *pcm,
472 snd_pcm_hw_params_t *sparams));
473 int snd_pcm_hw_params_slave(snd_pcm_t *pcm, snd_pcm_hw_params_t *params,
474 int (*cchange)(snd_pcm_t *pcm,
475 snd_pcm_hw_params_t *params,
476 snd_pcm_hw_params_t *sparams),
477 int (*sprepare)(snd_pcm_t *pcm,
478 snd_pcm_hw_params_t *params),
479 int (*schange)(snd_pcm_t *pcm,
480 snd_pcm_hw_params_t *params,
481 snd_pcm_hw_params_t *sparams),
482 int (*sparams)(snd_pcm_t *pcm,
483 snd_pcm_hw_params_t *sparams));
486 void _snd_pcm_hw_params_any(snd_pcm_hw_params_t *params);
487 void _snd_pcm_hw_param_set_empty(snd_pcm_hw_params_t *params,
488 snd_pcm_hw_param_t var);
489 int _snd_pcm_hw_param_set_interval(snd_pcm_hw_params_t *params,
490 snd_pcm_hw_param_t var,
491 const snd_interval_t *val);
492 int _snd_pcm_hw_param_set_mask(snd_pcm_hw_params_t *params,
493 snd_pcm_hw_param_t var, const snd_mask_t *mask);
494 int _snd_pcm_hw_param_first(snd_pcm_hw_params_t *params,
495 snd_pcm_hw_param_t var);
496 int _snd_pcm_hw_param_last(snd_pcm_hw_params_t *params,
497 snd_pcm_hw_param_t var);
498 int _snd_pcm_hw_param_set(snd_pcm_hw_params_t *params,
499 snd_pcm_hw_param_t var, unsigned int val, int dir);
500 static inline int _snd_pcm_hw_params_set_format(snd_pcm_hw_params_t *params,
501 snd_pcm_format_t val)
503 return _snd_pcm_hw_param_set(params, SND_PCM_HW_PARAM_FORMAT,
504 (unsigned long) val, 0);
507 static inline int _snd_pcm_hw_params_set_subformat(snd_pcm_hw_params_t *params,
508 snd_pcm_subformat_t val)
510 return _snd_pcm_hw_param_set(params, SND_PCM_HW_PARAM_SUBFORMAT,
511 (unsigned long) val, 0);
514 int _snd_pcm_hw_param_set_min(snd_pcm_hw_params_t *params,
515 snd_pcm_hw_param_t var, unsigned int val, int dir);
516 int _snd_pcm_hw_param_set_max(snd_pcm_hw_params_t *params,
517 snd_pcm_hw_param_t var, unsigned int val, int dir);
518 int _snd_pcm_hw_param_set_minmax(snd_pcm_hw_params_t *params,
519 snd_pcm_hw_param_t var,
520 unsigned int min, int mindir,
521 unsigned int max, int maxdir);
522 int _snd_pcm_hw_param_refine(snd_pcm_hw_params_t *params,
523 snd_pcm_hw_param_t var,
524 const snd_pcm_hw_params_t *src);
525 int _snd_pcm_hw_params_refine(snd_pcm_hw_params_t *params,
527 const snd_pcm_hw_params_t *src);
528 int snd_pcm_hw_param_refine_near(snd_pcm_t *pcm,
529 snd_pcm_hw_params_t *params,
530 snd_pcm_hw_param_t var,
531 const snd_pcm_hw_params_t *src);
532 int snd_pcm_hw_param_refine_multiple(snd_pcm_t *pcm,
533 snd_pcm_hw_params_t *params,
534 snd_pcm_hw_param_t var,
535 const snd_pcm_hw_params_t *src);
536 int snd_pcm_hw_param_empty(const snd_pcm_hw_params_t *params,
537 snd_pcm_hw_param_t var);
538 int snd_pcm_hw_param_always_eq(const snd_pcm_hw_params_t *params,
539 snd_pcm_hw_param_t var,
540 const snd_pcm_hw_params_t *params1);
541 int snd_pcm_hw_param_never_eq(const snd_pcm_hw_params_t *params,
542 snd_pcm_hw_param_t var,
543 const snd_pcm_hw_params_t *params1);
544 const snd_mask_t *snd_pcm_hw_param_get_mask(const snd_pcm_hw_params_t *params,
545 snd_pcm_hw_param_t var);
546 const snd_interval_t *snd_pcm_hw_param_get_interval(const snd_pcm_hw_params_t *params,
547 snd_pcm_hw_param_t var);
549 int snd_pcm_hw_param_any(snd_pcm_t *pcm, snd_pcm_hw_params_t *params,
550 snd_pcm_hw_param_t var);
551 int snd_pcm_hw_param_set_integer(snd_pcm_t *pcm, snd_pcm_hw_params_t *params,
553 snd_pcm_hw_param_t var);
554 int snd_pcm_hw_param_set_first(snd_pcm_t *pcm, snd_pcm_hw_params_t *params,
555 snd_pcm_hw_param_t var, unsigned int *rval, int *dir);
556 int snd_pcm_hw_param_set_last(snd_pcm_t *pcm, snd_pcm_hw_params_t *params,
557 snd_pcm_hw_param_t var, unsigned int *rval, int *dir);
558 int snd_pcm_hw_param_set_near(snd_pcm_t *pcm, snd_pcm_hw_params_t *params,
559 snd_pcm_hw_param_t var, unsigned int *val, int *dir);
560 int snd_pcm_hw_param_set_min(snd_pcm_t *pcm, snd_pcm_hw_params_t *params,
562 snd_pcm_hw_param_t var,
563 unsigned int *val, int *dir);
564 int snd_pcm_hw_param_set_max(snd_pcm_t *pcm, snd_pcm_hw_params_t *params,
566 snd_pcm_hw_param_t var, unsigned int *val, int *dir);
567 int snd_pcm_hw_param_set_minmax(snd_pcm_t *pcm, snd_pcm_hw_params_t *params,
569 snd_pcm_hw_param_t var,
570 unsigned int *min, int *mindir,
571 unsigned int *max, int *maxdir);
572 int snd_pcm_hw_param_set(snd_pcm_t *pcm, snd_pcm_hw_params_t *params,
574 snd_pcm_hw_param_t var, unsigned int val, int dir);
575 int snd_pcm_hw_param_set_mask(snd_pcm_t *pcm, snd_pcm_hw_params_t *params,
577 snd_pcm_hw_param_t var, const snd_mask_t *mask);
578 int snd_pcm_hw_param_get(const snd_pcm_hw_params_t *params, snd_pcm_hw_param_t var,
579 unsigned int *val, int *dir);
580 int snd_pcm_hw_param_get_min(const snd_pcm_hw_params_t *params,
581 snd_pcm_hw_param_t var,
582 unsigned int *val, int *dir);
583 int snd_pcm_hw_param_get_max(const snd_pcm_hw_params_t *params,
584 snd_pcm_hw_param_t var,
585 unsigned int *val, int *dir);
588 snd_pcm_sframes_t INTERNAL(snd_pcm_forward)(snd_pcm_t *pcm, snd_pcm_uframes_t frames);
590 int INTERNAL(snd_pcm_hw_params_get_access)(const snd_pcm_hw_params_t *params, snd_pcm_access_t *access);
591 int snd_pcm_hw_params_test_access(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_access_t access);
592 int snd_pcm_hw_params_set_access(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_access_t access);
593 int INTERNAL(snd_pcm_hw_params_set_access_first)(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_access_t *access);
594 int INTERNAL(snd_pcm_hw_params_set_access_last)(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_access_t *access);
595 int snd_pcm_hw_params_set_access_mask(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_access_mask_t *mask);
596 int snd_pcm_hw_params_get_access_mask(snd_pcm_hw_params_t *params, snd_pcm_access_mask_t *mask);
598 int INTERNAL(snd_pcm_hw_params_get_format)(const snd_pcm_hw_params_t *params, snd_pcm_format_t *val);
599 int snd_pcm_hw_params_test_format(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_format_t val);
600 int snd_pcm_hw_params_set_format(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_format_t val);
601 int INTERNAL(snd_pcm_hw_params_set_format_first)(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_format_t *format);
602 int INTERNAL(snd_pcm_hw_params_set_format_last)(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_format_t *format);
603 int snd_pcm_hw_params_set_format_mask(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_format_mask_t *mask);
604 void snd_pcm_hw_params_get_format_mask(snd_pcm_hw_params_t *params, snd_pcm_format_mask_t *mask);
606 int INTERNAL(snd_pcm_hw_params_get_subformat)(const snd_pcm_hw_params_t *params, snd_pcm_subformat_t *subformat);
607 int snd_pcm_hw_params_test_subformat(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_subformat_t subformat);
608 int snd_pcm_hw_params_set_subformat(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_subformat_t subformat);
609 int INTERNAL(snd_pcm_hw_params_set_subformat_first)(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_subformat_t *subformat);
610 int INTERNAL(snd_pcm_hw_params_set_subformat_last)(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_subformat_t *subformat);
611 int snd_pcm_hw_params_set_subformat_mask(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_subformat_mask_t *mask);
612 void snd_pcm_hw_params_get_subformat_mask(snd_pcm_hw_params_t *params, snd_pcm_subformat_mask_t *mask);
614 int INTERNAL(snd_pcm_hw_params_get_channels)(const snd_pcm_hw_params_t *params, unsigned int *val);
615 int INTERNAL(snd_pcm_hw_params_get_channels_min)(const snd_pcm_hw_params_t *params, unsigned int *val);
616 int INTERNAL(snd_pcm_hw_params_get_channels_max)(const snd_pcm_hw_params_t *params, unsigned int *val);
617 int snd_pcm_hw_params_test_channels(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int val);
618 int snd_pcm_hw_params_set_channels(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int val);
619 int snd_pcm_hw_params_set_channels_min(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val);
620 int snd_pcm_hw_params_set_channels_max(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val);
621 int snd_pcm_hw_params_set_channels_minmax(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *min, unsigned int *max);
622 int INTERNAL(snd_pcm_hw_params_set_channels_near)(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val);
623 int INTERNAL(snd_pcm_hw_params_set_channels_first)(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val);
624 int INTERNAL(snd_pcm_hw_params_set_channels_last)(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val);
626 int INTERNAL(snd_pcm_hw_params_get_rate)(const snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
627 int INTERNAL(snd_pcm_hw_params_get_rate_min)(const snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
628 int INTERNAL(snd_pcm_hw_params_get_rate_max)(const snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
629 int snd_pcm_hw_params_test_rate(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int val, int dir);
630 int snd_pcm_hw_params_set_rate(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int val, int dir);
631 int snd_pcm_hw_params_set_rate_min(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
632 int snd_pcm_hw_params_set_rate_max(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
633 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);
634 int INTERNAL(snd_pcm_hw_params_set_rate_near)(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
635 int INTERNAL(snd_pcm_hw_params_set_rate_first)(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
636 int INTERNAL(snd_pcm_hw_params_set_rate_last)(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
638 int INTERNAL(snd_pcm_hw_params_get_period_time)(const snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
639 int INTERNAL(snd_pcm_hw_params_get_period_time_min)(const snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
640 int INTERNAL(snd_pcm_hw_params_get_period_time_max)(const snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
641 int snd_pcm_hw_params_test_period_time(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int val, int dir);
642 int snd_pcm_hw_params_set_period_time(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int val, int dir);
643 int snd_pcm_hw_params_set_period_time_min(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
644 int snd_pcm_hw_params_set_period_time_max(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
645 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);
646 int INTERNAL(snd_pcm_hw_params_set_period_time_near)(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
647 int INTERNAL(snd_pcm_hw_params_set_period_time_first)(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
648 int INTERNAL(snd_pcm_hw_params_set_period_time_last)(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
650 int INTERNAL(snd_pcm_hw_params_get_period_size)(const snd_pcm_hw_params_t *params, snd_pcm_uframes_t *frames, int *dir);
651 int INTERNAL(snd_pcm_hw_params_get_period_size_min)(const snd_pcm_hw_params_t *params, snd_pcm_uframes_t *frames, int *dir);
652 int INTERNAL(snd_pcm_hw_params_get_period_size_max)(const snd_pcm_hw_params_t *params, snd_pcm_uframes_t *frames, int *dir);
653 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);
654 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);
655 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);
656 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);
657 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);
658 int INTERNAL(snd_pcm_hw_params_set_period_size_near)(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_uframes_t *val, int *dir);
659 int INTERNAL(snd_pcm_hw_params_set_period_size_first)(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_uframes_t *val, int *dir);
660 int INTERNAL(snd_pcm_hw_params_set_period_size_last)(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_uframes_t *val, int *dir);
661 int snd_pcm_hw_params_set_period_size_integer(snd_pcm_t *pcm, snd_pcm_hw_params_t *params);
663 int INTERNAL(snd_pcm_hw_params_get_periods)(const snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
664 int INTERNAL(snd_pcm_hw_params_get_periods_min)(const snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
665 int INTERNAL(snd_pcm_hw_params_get_periods_max)(const snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
666 int snd_pcm_hw_params_test_periods(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int val, int dir);
667 int snd_pcm_hw_params_set_periods(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int val, int dir);
668 int snd_pcm_hw_params_set_periods_min(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
669 int snd_pcm_hw_params_set_periods_max(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
670 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);
671 int INTERNAL(snd_pcm_hw_params_set_periods_near)(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
672 int INTERNAL(snd_pcm_hw_params_set_periods_first)(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
673 int INTERNAL(snd_pcm_hw_params_set_periods_last)(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
674 int snd_pcm_hw_params_set_periods_integer(snd_pcm_t *pcm, snd_pcm_hw_params_t *params);
676 int INTERNAL(snd_pcm_hw_params_get_buffer_time)(const snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
677 int INTERNAL(snd_pcm_hw_params_get_buffer_time_min)(const snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
678 int INTERNAL(snd_pcm_hw_params_get_buffer_time_max)(const snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
679 int snd_pcm_hw_params_test_buffer_time(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int val, int dir);
680 int snd_pcm_hw_params_set_buffer_time(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int val, int dir);
681 int snd_pcm_hw_params_set_buffer_time_min(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
682 int snd_pcm_hw_params_set_buffer_time_max(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
683 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);
684 int INTERNAL(snd_pcm_hw_params_set_buffer_time_near)(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
685 int INTERNAL(snd_pcm_hw_params_set_buffer_time_first)(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
686 int INTERNAL(snd_pcm_hw_params_set_buffer_time_last)(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
688 int INTERNAL(snd_pcm_hw_params_get_buffer_size)(const snd_pcm_hw_params_t *params, snd_pcm_uframes_t *val);
689 int INTERNAL(snd_pcm_hw_params_get_buffer_size_min)(const snd_pcm_hw_params_t *params, snd_pcm_uframes_t *val);
690 int INTERNAL(snd_pcm_hw_params_get_buffer_size_max)(const snd_pcm_hw_params_t *params, snd_pcm_uframes_t *val);
691 int snd_pcm_hw_params_test_buffer_size(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_uframes_t val);
692 int snd_pcm_hw_params_set_buffer_size(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_uframes_t val);
693 int snd_pcm_hw_params_set_buffer_size_min(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_uframes_t *val);
694 int snd_pcm_hw_params_set_buffer_size_max(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_uframes_t *val);
695 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);
696 int INTERNAL(snd_pcm_hw_params_set_buffer_size_near)(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_uframes_t *val);
697 int INTERNAL(snd_pcm_hw_params_set_buffer_size_first)(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_uframes_t *val);
698 int INTERNAL(snd_pcm_hw_params_set_buffer_size_last)(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_uframes_t *val);
700 int INTERNAL(snd_pcm_hw_params_get_tick_time)(const snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
701 int INTERNAL(snd_pcm_hw_params_get_tick_time_min)(const snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
702 int INTERNAL(snd_pcm_hw_params_get_tick_time_max)(const snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
703 int snd_pcm_hw_params_test_tick_time(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int val, int dir);
704 int snd_pcm_hw_params_set_tick_time(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int val, int dir);
705 int snd_pcm_hw_params_set_tick_time_min(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
706 int snd_pcm_hw_params_set_tick_time_max(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
707 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);
708 int INTERNAL(snd_pcm_hw_params_set_tick_time_near)(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
709 int INTERNAL(snd_pcm_hw_params_set_tick_time_first)(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
710 int INTERNAL(snd_pcm_hw_params_set_tick_time_last)(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
712 int snd_pcm_sw_params_set_tstamp_mode(snd_pcm_t *pcm, snd_pcm_sw_params_t *params, snd_pcm_tstamp_t val);
713 int INTERNAL(snd_pcm_sw_params_get_tstamp_mode)(const snd_pcm_sw_params_t *params, snd_pcm_tstamp_t *val);
714 int snd_pcm_sw_params_set_sleep_min(snd_pcm_t *pcm, snd_pcm_sw_params_t *params, unsigned int val);
715 int INTERNAL(snd_pcm_sw_params_get_sleep_min)(const snd_pcm_sw_params_t *params, unsigned int *val);
716 int snd_pcm_sw_params_set_avail_min(snd_pcm_t *pcm, snd_pcm_sw_params_t *params, snd_pcm_uframes_t val);
717 int INTERNAL(snd_pcm_sw_params_get_avail_min)(const snd_pcm_sw_params_t *params, snd_pcm_uframes_t *val);
718 int snd_pcm_sw_params_set_xfer_align(snd_pcm_t *pcm, snd_pcm_sw_params_t *params, snd_pcm_uframes_t val);
719 int INTERNAL(snd_pcm_sw_params_get_xfer_align)(const snd_pcm_sw_params_t *params, snd_pcm_uframes_t *val);
720 int snd_pcm_sw_params_set_start_threshold(snd_pcm_t *pcm, snd_pcm_sw_params_t *params, snd_pcm_uframes_t val);
721 int INTERNAL(snd_pcm_sw_params_get_start_threshold)(const snd_pcm_sw_params_t *paramsm, snd_pcm_uframes_t *val);
722 int snd_pcm_sw_params_set_stop_threshold(snd_pcm_t *pcm, snd_pcm_sw_params_t *params, snd_pcm_uframes_t val);
723 int INTERNAL(snd_pcm_sw_params_get_stop_threshold)(const snd_pcm_sw_params_t *params, snd_pcm_uframes_t *val);
724 int snd_pcm_sw_params_set_silence_threshold(snd_pcm_t *pcm, snd_pcm_sw_params_t *params, snd_pcm_uframes_t val);
725 int INTERNAL(snd_pcm_sw_params_get_silence_threshold)(const snd_pcm_sw_params_t *params, snd_pcm_uframes_t *val);
726 int snd_pcm_sw_params_set_silence_size(snd_pcm_t *pcm, snd_pcm_sw_params_t *params, snd_pcm_uframes_t val);
727 int INTERNAL(snd_pcm_sw_params_get_silence_size)(const snd_pcm_sw_params_t *params, snd_pcm_uframes_t *val);
728 #endif /* INTERNAL */
730 const char *snd_pcm_hw_param_name(snd_pcm_hw_param_t param);
731 void snd_pcm_hw_param_dump(const snd_pcm_hw_params_t *params,
732 snd_pcm_hw_param_t var, snd_output_t *out);
734 int snd_pcm_hw_strategy_simple_near(snd_pcm_hw_strategy_t *strategy, int order,
735 snd_pcm_hw_param_t var,
738 int snd_pcm_hw_strategy_simple_choices(snd_pcm_hw_strategy_t *strategy, int order,
739 snd_pcm_hw_param_t var,
741 snd_pcm_hw_strategy_simple_choices_list_t *choices);
744 #define SCONF_MANDATORY 1
745 #define SCONF_UNCHANGED 2
747 int snd_pcm_slave_conf(snd_config_t *root, snd_config_t *conf,
748 snd_config_t **pcm_conf, unsigned int count, ...);
750 #define SND_PCM_APPEND (1<<8)
752 int snd_pcm_open_slave(snd_pcm_t **pcmp, snd_config_t *root,
753 snd_config_t *conf, snd_pcm_stream_t stream,
754 int mode, snd_config_t *parent_conf);
755 int snd_pcm_conf_generic_id(const char *id);
757 int snd_pcm_hw_open_fd(snd_pcm_t **pcmp, const char *name, int fd, int mmap_emulation, int sync_ptr_ioctl);
759 int snd_pcm_wait_nocheck(snd_pcm_t *pcm, int timeout);
761 const snd_config_t *snd_pcm_rate_get_default_converter(snd_config_t *root);
763 #define SND_PCM_HW_PARBIT_ACCESS (1U << SND_PCM_HW_PARAM_ACCESS)
764 #define SND_PCM_HW_PARBIT_FORMAT (1U << SND_PCM_HW_PARAM_FORMAT)
765 #define SND_PCM_HW_PARBIT_SUBFORMAT (1U << SND_PCM_HW_PARAM_SUBFORMAT)
766 #define SND_PCM_HW_PARBIT_CHANNELS (1U << SND_PCM_HW_PARAM_CHANNELS)
767 #define SND_PCM_HW_PARBIT_RATE (1U << SND_PCM_HW_PARAM_RATE)
768 #define SND_PCM_HW_PARBIT_PERIOD_TIME (1U << SND_PCM_HW_PARAM_PERIOD_TIME)
769 #define SND_PCM_HW_PARBIT_PERIOD_SIZE (1U << SND_PCM_HW_PARAM_PERIOD_SIZE)
770 #define SND_PCM_HW_PARBIT_PERIODS (1U << SND_PCM_HW_PARAM_PERIODS)
771 #define SND_PCM_HW_PARBIT_BUFFER_TIME (1U << SND_PCM_HW_PARAM_BUFFER_TIME)
772 #define SND_PCM_HW_PARBIT_BUFFER_SIZE (1U << SND_PCM_HW_PARAM_BUFFER_SIZE)
773 #define SND_PCM_HW_PARBIT_SAMPLE_BITS (1U << SND_PCM_HW_PARAM_SAMPLE_BITS)
774 #define SND_PCM_HW_PARBIT_FRAME_BITS (1U << SND_PCM_HW_PARAM_FRAME_BITS)
775 #define SND_PCM_HW_PARBIT_PERIOD_BYTES (1U << SND_PCM_HW_PARAM_PERIOD_BYTES)
776 #define SND_PCM_HW_PARBIT_BUFFER_BYTES (1U << SND_PCM_HW_PARAM_BUFFER_BYTES)
777 #define SND_PCM_HW_PARBIT_TICK_TIME (1U << SND_PCM_HW_PARAM_TICK_TIME)
780 #define SND_PCM_ACCBIT_MMAP { ((1U << SND_PCM_ACCESS_MMAP_INTERLEAVED) | \
781 (1U << SND_PCM_ACCESS_MMAP_NONINTERLEAVED) | \
782 (1U << SND_PCM_ACCESS_MMAP_COMPLEX)) }
783 #define SND_PCM_ACCBIT_MMAPI { (1U << SND_PCM_ACCESS_MMAP_INTERLEAVED) }
784 #define SND_PCM_ACCBIT_MMAPN { (1U << SND_PCM_ACCESS_MMAP_NONINTERLEAVED) }
785 #define SND_PCM_ACCBIT_MMAPC { (1U << SND_PCM_ACCESS_MMAP_COMPLEX) }
787 #define SND_PCM_ACCBIT_SHM { ((1U << SND_PCM_ACCESS_MMAP_INTERLEAVED) | \
788 (1U << SND_PCM_ACCESS_RW_INTERLEAVED) | \
789 (1U << SND_PCM_ACCESS_MMAP_NONINTERLEAVED) | \
790 (1U << SND_PCM_ACCESS_RW_NONINTERLEAVED)) }
791 #define SND_PCM_ACCBIT_SHMI { ((1U << SND_PCM_ACCESS_MMAP_INTERLEAVED) | \
792 (1U << SND_PCM_ACCESS_RW_INTERLEAVED)) }
793 #define SND_PCM_ACCBIT_SHMN { ((1U << SND_PCM_ACCESS_MMAP_NONINTERLEAVED) | \
794 (1U << SND_PCM_ACCESS_RW_NONINTERLEAVED)) }
796 #define SND_PCM_FMTBIT_LINEAR \
797 { ((1U << SND_PCM_FORMAT_S8) | \
798 (1U << SND_PCM_FORMAT_U8) | \
799 (1U << SND_PCM_FORMAT_S16_LE) | \
800 (1U << SND_PCM_FORMAT_S16_BE) | \
801 (1U << SND_PCM_FORMAT_U16_LE) | \
802 (1U << SND_PCM_FORMAT_U16_BE) | \
803 (1U << SND_PCM_FORMAT_S24_LE) | \
804 (1U << SND_PCM_FORMAT_S24_BE) | \
805 (1U << SND_PCM_FORMAT_U24_LE) | \
806 (1U << SND_PCM_FORMAT_U24_BE) | \
807 (1U << SND_PCM_FORMAT_S32_LE) | \
808 (1U << SND_PCM_FORMAT_S32_BE) | \
809 (1U << SND_PCM_FORMAT_U32_LE) | \
810 (1U << SND_PCM_FORMAT_U32_BE)), \
811 ((1U << (SND_PCM_FORMAT_S24_3LE - 32)) | \
812 (1U << (SND_PCM_FORMAT_U24_3LE - 32)) | \
813 (1U << (SND_PCM_FORMAT_S24_3BE - 32)) | \
814 (1U << (SND_PCM_FORMAT_U24_3BE - 32)) | \
815 (1U << (SND_PCM_FORMAT_S20_3LE - 32)) | \
816 (1U << (SND_PCM_FORMAT_U20_3LE - 32)) | \
817 (1U << (SND_PCM_FORMAT_S20_3BE - 32)) | \
818 (1U << (SND_PCM_FORMAT_U20_3BE - 32)) | \
819 (1U << (SND_PCM_FORMAT_S18_3LE - 32)) | \
820 (1U << (SND_PCM_FORMAT_U18_3LE - 32)) | \
821 (1U << (SND_PCM_FORMAT_S18_3BE - 32)) | \
822 (1U << (SND_PCM_FORMAT_U18_3BE - 32))) }
825 #define SND_PCM_FMTBIT_FLOAT \
826 { ((1U << SND_PCM_FORMAT_FLOAT_LE) | \
827 (1U << SND_PCM_FORMAT_FLOAT_BE) | \
828 (1U << SND_PCM_FORMAT_FLOAT64_LE) | \
829 (1U << SND_PCM_FORMAT_FLOAT64_BE)) }
832 typedef union snd_tmp_float {
837 typedef union snd_tmp_double {