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1d14ffa9 FB |
1 | /* |
2 | * QEMU ALSA audio driver | |
3 | * | |
4 | * Copyright (c) 2005 Vassili Karpov (malc) | |
5 | * | |
6 | * Permission is hereby granted, free of charge, to any person obtaining a copy | |
7 | * of this software and associated documentation files (the "Software"), to deal | |
8 | * in the Software without restriction, including without limitation the rights | |
9 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
10 | * copies of the Software, and to permit persons to whom the Software is | |
11 | * furnished to do so, subject to the following conditions: | |
12 | * | |
13 | * The above copyright notice and this permission notice shall be included in | |
14 | * all copies or substantial portions of the Software. | |
15 | * | |
16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
17 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
18 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
19 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
20 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
21 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN | |
22 | * THE SOFTWARE. | |
23 | */ | |
24 | #include <alsa/asoundlib.h> | |
749bc4bf | 25 | #include "qemu-common.h" |
8b438ba3 | 26 | #include "qemu-char.h" |
749bc4bf | 27 | #include "audio.h" |
1d14ffa9 | 28 | |
2637872b | 29 | #if QEMU_GNUC_PREREQ(4, 3) |
30 | #pragma GCC diagnostic ignored "-Waddress" | |
31 | #endif | |
32 | ||
1d14ffa9 FB |
33 | #define AUDIO_CAP "alsa" |
34 | #include "audio_int.h" | |
35 | ||
8b438ba3 | 36 | struct pollhlp { |
37 | snd_pcm_t *handle; | |
38 | struct pollfd *pfds; | |
39 | int count; | |
b4f763b8 | 40 | int mask; |
8b438ba3 | 41 | }; |
42 | ||
1d14ffa9 FB |
43 | typedef struct ALSAVoiceOut { |
44 | HWVoiceOut hw; | |
541ba4e7 | 45 | int wpos; |
46 | int pending; | |
1d14ffa9 FB |
47 | void *pcm_buf; |
48 | snd_pcm_t *handle; | |
8b438ba3 | 49 | struct pollhlp pollhlp; |
1d14ffa9 FB |
50 | } ALSAVoiceOut; |
51 | ||
52 | typedef struct ALSAVoiceIn { | |
53 | HWVoiceIn hw; | |
54 | snd_pcm_t *handle; | |
55 | void *pcm_buf; | |
8b438ba3 | 56 | struct pollhlp pollhlp; |
1d14ffa9 FB |
57 | } ALSAVoiceIn; |
58 | ||
59 | static struct { | |
60 | int size_in_usec_in; | |
61 | int size_in_usec_out; | |
62 | const char *pcm_name_in; | |
63 | const char *pcm_name_out; | |
64 | unsigned int buffer_size_in; | |
65 | unsigned int period_size_in; | |
66 | unsigned int buffer_size_out; | |
67 | unsigned int period_size_out; | |
68 | unsigned int threshold; | |
69 | ||
fe8f096b TS |
70 | int buffer_size_in_overridden; |
71 | int period_size_in_overridden; | |
1d14ffa9 | 72 | |
fe8f096b TS |
73 | int buffer_size_out_overridden; |
74 | int period_size_out_overridden; | |
571ec3d6 | 75 | int verbose; |
1d14ffa9 | 76 | } conf = { |
de2ca4fb | 77 | .buffer_size_out = 4096, |
78 | .period_size_out = 1024, | |
8ead62cf FB |
79 | .pcm_name_out = "default", |
80 | .pcm_name_in = "default", | |
1d14ffa9 FB |
81 | }; |
82 | ||
83 | struct alsa_params_req { | |
ca9cc28c AZ |
84 | int freq; |
85 | snd_pcm_format_t fmt; | |
86 | int nchannels; | |
7a24c800 | 87 | int size_in_usec; |
64333899 | 88 | int override_mask; |
1d14ffa9 FB |
89 | unsigned int buffer_size; |
90 | unsigned int period_size; | |
91 | }; | |
92 | ||
93 | struct alsa_params_obt { | |
94 | int freq; | |
95 | audfmt_e fmt; | |
ca9cc28c | 96 | int endianness; |
1d14ffa9 | 97 | int nchannels; |
c0fe3827 | 98 | snd_pcm_uframes_t samples; |
1d14ffa9 FB |
99 | }; |
100 | ||
101 | static void GCC_FMT_ATTR (2, 3) alsa_logerr (int err, const char *fmt, ...) | |
102 | { | |
103 | va_list ap; | |
104 | ||
105 | va_start (ap, fmt); | |
106 | AUD_vlog (AUDIO_CAP, fmt, ap); | |
107 | va_end (ap); | |
108 | ||
109 | AUD_log (AUDIO_CAP, "Reason: %s\n", snd_strerror (err)); | |
110 | } | |
111 | ||
112 | static void GCC_FMT_ATTR (3, 4) alsa_logerr2 ( | |
113 | int err, | |
114 | const char *typ, | |
115 | const char *fmt, | |
116 | ... | |
117 | ) | |
118 | { | |
119 | va_list ap; | |
120 | ||
c0fe3827 | 121 | AUD_log (AUDIO_CAP, "Could not initialize %s\n", typ); |
1d14ffa9 FB |
122 | |
123 | va_start (ap, fmt); | |
124 | AUD_vlog (AUDIO_CAP, fmt, ap); | |
125 | va_end (ap); | |
126 | ||
127 | AUD_log (AUDIO_CAP, "Reason: %s\n", snd_strerror (err)); | |
128 | } | |
129 | ||
6ebfda13 | 130 | static void alsa_fini_poll (struct pollhlp *hlp) |
131 | { | |
132 | int i; | |
133 | struct pollfd *pfds = hlp->pfds; | |
134 | ||
135 | if (pfds) { | |
136 | for (i = 0; i < hlp->count; ++i) { | |
137 | qemu_set_fd_handler (pfds[i].fd, NULL, NULL, NULL); | |
138 | } | |
139 | qemu_free (pfds); | |
140 | } | |
141 | hlp->pfds = NULL; | |
142 | hlp->count = 0; | |
143 | hlp->handle = NULL; | |
144 | } | |
145 | ||
146 | static void alsa_anal_close1 (snd_pcm_t **handlep) | |
1d14ffa9 FB |
147 | { |
148 | int err = snd_pcm_close (*handlep); | |
149 | if (err) { | |
150 | alsa_logerr (err, "Failed to close PCM handle %p\n", *handlep); | |
151 | } | |
152 | *handlep = NULL; | |
153 | } | |
154 | ||
6ebfda13 | 155 | static void alsa_anal_close (snd_pcm_t **handlep, struct pollhlp *hlp) |
156 | { | |
157 | alsa_fini_poll (hlp); | |
158 | alsa_anal_close1 (handlep); | |
159 | } | |
160 | ||
8b438ba3 | 161 | static int alsa_recover (snd_pcm_t *handle) |
162 | { | |
163 | int err = snd_pcm_prepare (handle); | |
164 | if (err < 0) { | |
165 | alsa_logerr (err, "Failed to prepare handle %p\n", handle); | |
166 | return -1; | |
167 | } | |
168 | return 0; | |
169 | } | |
170 | ||
171 | static int alsa_resume (snd_pcm_t *handle) | |
172 | { | |
173 | int err = snd_pcm_resume (handle); | |
174 | if (err < 0) { | |
175 | alsa_logerr (err, "Failed to resume handle %p\n", handle); | |
176 | return -1; | |
177 | } | |
178 | return 0; | |
179 | } | |
180 | ||
181 | static void alsa_poll_handler (void *opaque) | |
182 | { | |
183 | int err, count; | |
184 | snd_pcm_state_t state; | |
185 | struct pollhlp *hlp = opaque; | |
186 | unsigned short revents; | |
187 | ||
188 | count = poll (hlp->pfds, hlp->count, 0); | |
189 | if (count < 0) { | |
190 | dolog ("alsa_poll_handler: poll %s\n", strerror (errno)); | |
191 | return; | |
192 | } | |
193 | ||
194 | if (!count) { | |
195 | return; | |
196 | } | |
197 | ||
198 | /* XXX: ALSA example uses initial count, not the one returned by | |
199 | poll, correct? */ | |
200 | err = snd_pcm_poll_descriptors_revents (hlp->handle, hlp->pfds, | |
201 | hlp->count, &revents); | |
202 | if (err < 0) { | |
203 | alsa_logerr (err, "snd_pcm_poll_descriptors_revents"); | |
204 | return; | |
205 | } | |
206 | ||
b4f763b8 | 207 | if (!(revents & hlp->mask)) { |
8b438ba3 | 208 | if (conf.verbose) { |
209 | dolog ("revents = %d\n", revents); | |
210 | } | |
211 | return; | |
212 | } | |
213 | ||
214 | state = snd_pcm_state (hlp->handle); | |
215 | switch (state) { | |
216 | case SND_PCM_STATE_XRUN: | |
217 | alsa_recover (hlp->handle); | |
218 | break; | |
219 | ||
220 | case SND_PCM_STATE_SUSPENDED: | |
221 | alsa_resume (hlp->handle); | |
222 | break; | |
223 | ||
224 | case SND_PCM_STATE_PREPARED: | |
225 | audio_run ("alsa run (prepared)"); | |
226 | break; | |
227 | ||
228 | case SND_PCM_STATE_RUNNING: | |
229 | audio_run ("alsa run (running)"); | |
230 | break; | |
231 | ||
232 | default: | |
233 | dolog ("Unexpected state %d\n", state); | |
234 | } | |
235 | } | |
236 | ||
b4f763b8 | 237 | static int alsa_poll_helper (snd_pcm_t *handle, struct pollhlp *hlp, int mask) |
8b438ba3 | 238 | { |
239 | int i, count, err; | |
240 | struct pollfd *pfds; | |
241 | ||
242 | count = snd_pcm_poll_descriptors_count (handle); | |
243 | if (count <= 0) { | |
244 | dolog ("Could not initialize poll mode\n" | |
245 | "Invalid number of poll descriptors %d\n", count); | |
246 | return -1; | |
247 | } | |
248 | ||
249 | pfds = audio_calloc ("alsa_poll_helper", count, sizeof (*pfds)); | |
250 | if (!pfds) { | |
251 | dolog ("Could not initialize poll mode\n"); | |
252 | return -1; | |
253 | } | |
254 | ||
255 | err = snd_pcm_poll_descriptors (handle, pfds, count); | |
256 | if (err < 0) { | |
257 | alsa_logerr (err, "Could not initialize poll mode\n" | |
258 | "Could not obtain poll descriptors\n"); | |
259 | qemu_free (pfds); | |
260 | return -1; | |
261 | } | |
262 | ||
263 | for (i = 0; i < count; ++i) { | |
264 | if (pfds[i].events & POLLIN) { | |
265 | err = qemu_set_fd_handler (pfds[i].fd, alsa_poll_handler, | |
266 | NULL, hlp); | |
267 | } | |
268 | if (pfds[i].events & POLLOUT) { | |
269 | if (conf.verbose) { | |
270 | dolog ("POLLOUT %d %d\n", i, pfds[i].fd); | |
271 | } | |
272 | err = qemu_set_fd_handler (pfds[i].fd, NULL, | |
273 | alsa_poll_handler, hlp); | |
274 | } | |
275 | if (conf.verbose) { | |
276 | dolog ("Set handler events=%#x index=%d fd=%d err=%d\n", | |
277 | pfds[i].events, i, pfds[i].fd, err); | |
278 | } | |
279 | ||
280 | if (err) { | |
281 | dolog ("Failed to set handler events=%#x index=%d fd=%d err=%d\n", | |
282 | pfds[i].events, i, pfds[i].fd, err); | |
283 | ||
284 | while (i--) { | |
285 | qemu_set_fd_handler (pfds[i].fd, NULL, NULL, NULL); | |
286 | } | |
287 | qemu_free (pfds); | |
288 | return -1; | |
289 | } | |
290 | } | |
291 | hlp->pfds = pfds; | |
292 | hlp->count = count; | |
293 | hlp->handle = handle; | |
b4f763b8 | 294 | hlp->mask = mask; |
8b438ba3 | 295 | return 0; |
296 | } | |
297 | ||
298 | static int alsa_poll_out (HWVoiceOut *hw) | |
299 | { | |
300 | ALSAVoiceOut *alsa = (ALSAVoiceOut *) hw; | |
301 | ||
b4f763b8 | 302 | return alsa_poll_helper (alsa->handle, &alsa->pollhlp, POLLOUT); |
8b438ba3 | 303 | } |
304 | ||
305 | static int alsa_poll_in (HWVoiceIn *hw) | |
306 | { | |
307 | ALSAVoiceIn *alsa = (ALSAVoiceIn *) hw; | |
308 | ||
b4f763b8 | 309 | return alsa_poll_helper (alsa->handle, &alsa->pollhlp, POLLIN); |
8b438ba3 | 310 | } |
311 | ||
1d14ffa9 FB |
312 | static int alsa_write (SWVoiceOut *sw, void *buf, int len) |
313 | { | |
314 | return audio_pcm_sw_write (sw, buf, len); | |
315 | } | |
316 | ||
ca9cc28c | 317 | static snd_pcm_format_t aud_to_alsafmt (audfmt_e fmt) |
1d14ffa9 FB |
318 | { |
319 | switch (fmt) { | |
320 | case AUD_FMT_S8: | |
321 | return SND_PCM_FORMAT_S8; | |
322 | ||
323 | case AUD_FMT_U8: | |
324 | return SND_PCM_FORMAT_U8; | |
325 | ||
326 | case AUD_FMT_S16: | |
327 | return SND_PCM_FORMAT_S16_LE; | |
328 | ||
329 | case AUD_FMT_U16: | |
330 | return SND_PCM_FORMAT_U16_LE; | |
331 | ||
f941aa25 TS |
332 | case AUD_FMT_S32: |
333 | return SND_PCM_FORMAT_S32_LE; | |
334 | ||
335 | case AUD_FMT_U32: | |
336 | return SND_PCM_FORMAT_U32_LE; | |
337 | ||
1d14ffa9 FB |
338 | default: |
339 | dolog ("Internal logic error: Bad audio format %d\n", fmt); | |
340 | #ifdef DEBUG_AUDIO | |
341 | abort (); | |
342 | #endif | |
343 | return SND_PCM_FORMAT_U8; | |
344 | } | |
345 | } | |
346 | ||
ca9cc28c AZ |
347 | static int alsa_to_audfmt (snd_pcm_format_t alsafmt, audfmt_e *fmt, |
348 | int *endianness) | |
1d14ffa9 FB |
349 | { |
350 | switch (alsafmt) { | |
351 | case SND_PCM_FORMAT_S8: | |
352 | *endianness = 0; | |
353 | *fmt = AUD_FMT_S8; | |
354 | break; | |
355 | ||
356 | case SND_PCM_FORMAT_U8: | |
357 | *endianness = 0; | |
358 | *fmt = AUD_FMT_U8; | |
359 | break; | |
360 | ||
361 | case SND_PCM_FORMAT_S16_LE: | |
362 | *endianness = 0; | |
363 | *fmt = AUD_FMT_S16; | |
364 | break; | |
365 | ||
366 | case SND_PCM_FORMAT_U16_LE: | |
367 | *endianness = 0; | |
368 | *fmt = AUD_FMT_U16; | |
369 | break; | |
370 | ||
371 | case SND_PCM_FORMAT_S16_BE: | |
372 | *endianness = 1; | |
373 | *fmt = AUD_FMT_S16; | |
374 | break; | |
375 | ||
376 | case SND_PCM_FORMAT_U16_BE: | |
377 | *endianness = 1; | |
378 | *fmt = AUD_FMT_U16; | |
379 | break; | |
380 | ||
f941aa25 TS |
381 | case SND_PCM_FORMAT_S32_LE: |
382 | *endianness = 0; | |
383 | *fmt = AUD_FMT_S32; | |
384 | break; | |
385 | ||
386 | case SND_PCM_FORMAT_U32_LE: | |
387 | *endianness = 0; | |
388 | *fmt = AUD_FMT_U32; | |
389 | break; | |
390 | ||
391 | case SND_PCM_FORMAT_S32_BE: | |
392 | *endianness = 1; | |
393 | *fmt = AUD_FMT_S32; | |
394 | break; | |
395 | ||
396 | case SND_PCM_FORMAT_U32_BE: | |
397 | *endianness = 1; | |
398 | *fmt = AUD_FMT_U32; | |
399 | break; | |
400 | ||
1d14ffa9 FB |
401 | default: |
402 | dolog ("Unrecognized audio format %d\n", alsafmt); | |
403 | return -1; | |
404 | } | |
405 | ||
406 | return 0; | |
407 | } | |
408 | ||
1d14ffa9 FB |
409 | static void alsa_dump_info (struct alsa_params_req *req, |
410 | struct alsa_params_obt *obt) | |
411 | { | |
412 | dolog ("parameter | requested value | obtained value\n"); | |
413 | dolog ("format | %10d | %10d\n", req->fmt, obt->fmt); | |
414 | dolog ("channels | %10d | %10d\n", | |
415 | req->nchannels, obt->nchannels); | |
416 | dolog ("frequency | %10d | %10d\n", req->freq, obt->freq); | |
417 | dolog ("============================================\n"); | |
418 | dolog ("requested: buffer size %d period size %d\n", | |
419 | req->buffer_size, req->period_size); | |
c0fe3827 | 420 | dolog ("obtained: samples %ld\n", obt->samples); |
1d14ffa9 | 421 | } |
1d14ffa9 FB |
422 | |
423 | static void alsa_set_threshold (snd_pcm_t *handle, snd_pcm_uframes_t threshold) | |
424 | { | |
425 | int err; | |
426 | snd_pcm_sw_params_t *sw_params; | |
427 | ||
428 | snd_pcm_sw_params_alloca (&sw_params); | |
429 | ||
430 | err = snd_pcm_sw_params_current (handle, sw_params); | |
431 | if (err < 0) { | |
c0fe3827 | 432 | dolog ("Could not fully initialize DAC\n"); |
1d14ffa9 FB |
433 | alsa_logerr (err, "Failed to get current software parameters\n"); |
434 | return; | |
435 | } | |
436 | ||
437 | err = snd_pcm_sw_params_set_start_threshold (handle, sw_params, threshold); | |
438 | if (err < 0) { | |
c0fe3827 | 439 | dolog ("Could not fully initialize DAC\n"); |
1d14ffa9 FB |
440 | alsa_logerr (err, "Failed to set software threshold to %ld\n", |
441 | threshold); | |
442 | return; | |
443 | } | |
444 | ||
445 | err = snd_pcm_sw_params (handle, sw_params); | |
446 | if (err < 0) { | |
c0fe3827 | 447 | dolog ("Could not fully initialize DAC\n"); |
1d14ffa9 FB |
448 | alsa_logerr (err, "Failed to set software parameters\n"); |
449 | return; | |
450 | } | |
451 | } | |
452 | ||
453 | static int alsa_open (int in, struct alsa_params_req *req, | |
454 | struct alsa_params_obt *obt, snd_pcm_t **handlep) | |
455 | { | |
456 | snd_pcm_t *handle; | |
457 | snd_pcm_hw_params_t *hw_params; | |
60fe76f3 | 458 | int err; |
7a24c800 | 459 | int size_in_usec; |
60fe76f3 | 460 | unsigned int freq, nchannels; |
1d14ffa9 | 461 | const char *pcm_name = in ? conf.pcm_name_in : conf.pcm_name_out; |
1d14ffa9 FB |
462 | snd_pcm_uframes_t obt_buffer_size; |
463 | const char *typ = in ? "ADC" : "DAC"; | |
ca9cc28c | 464 | snd_pcm_format_t obtfmt; |
1d14ffa9 FB |
465 | |
466 | freq = req->freq; | |
1d14ffa9 | 467 | nchannels = req->nchannels; |
7a24c800 | 468 | size_in_usec = req->size_in_usec; |
1d14ffa9 FB |
469 | |
470 | snd_pcm_hw_params_alloca (&hw_params); | |
471 | ||
472 | err = snd_pcm_open ( | |
473 | &handle, | |
474 | pcm_name, | |
475 | in ? SND_PCM_STREAM_CAPTURE : SND_PCM_STREAM_PLAYBACK, | |
476 | SND_PCM_NONBLOCK | |
477 | ); | |
478 | if (err < 0) { | |
479 | alsa_logerr2 (err, typ, "Failed to open `%s':\n", pcm_name); | |
480 | return -1; | |
481 | } | |
482 | ||
483 | err = snd_pcm_hw_params_any (handle, hw_params); | |
484 | if (err < 0) { | |
485 | alsa_logerr2 (err, typ, "Failed to initialize hardware parameters\n"); | |
486 | goto err; | |
487 | } | |
488 | ||
489 | err = snd_pcm_hw_params_set_access ( | |
490 | handle, | |
491 | hw_params, | |
492 | SND_PCM_ACCESS_RW_INTERLEAVED | |
493 | ); | |
494 | if (err < 0) { | |
495 | alsa_logerr2 (err, typ, "Failed to set access type\n"); | |
496 | goto err; | |
497 | } | |
498 | ||
499 | err = snd_pcm_hw_params_set_format (handle, hw_params, req->fmt); | |
ca9cc28c | 500 | if (err < 0 && conf.verbose) { |
1d14ffa9 | 501 | alsa_logerr2 (err, typ, "Failed to set format %d\n", req->fmt); |
1d14ffa9 FB |
502 | } |
503 | ||
504 | err = snd_pcm_hw_params_set_rate_near (handle, hw_params, &freq, 0); | |
505 | if (err < 0) { | |
506 | alsa_logerr2 (err, typ, "Failed to set frequency %d\n", req->freq); | |
507 | goto err; | |
508 | } | |
509 | ||
510 | err = snd_pcm_hw_params_set_channels_near ( | |
511 | handle, | |
512 | hw_params, | |
513 | &nchannels | |
514 | ); | |
515 | if (err < 0) { | |
516 | alsa_logerr2 (err, typ, "Failed to set number of channels %d\n", | |
517 | req->nchannels); | |
518 | goto err; | |
519 | } | |
520 | ||
521 | if (nchannels != 1 && nchannels != 2) { | |
522 | alsa_logerr2 (err, typ, | |
523 | "Can not handle obtained number of channels %d\n", | |
524 | nchannels); | |
525 | goto err; | |
526 | } | |
527 | ||
7a24c800 | 528 | if (req->buffer_size) { |
f3b52983 | 529 | unsigned long obt; |
530 | ||
7a24c800 | 531 | if (size_in_usec) { |
532 | int dir = 0; | |
533 | unsigned int btime = req->buffer_size; | |
1d14ffa9 FB |
534 | |
535 | err = snd_pcm_hw_params_set_buffer_time_near ( | |
536 | handle, | |
537 | hw_params, | |
7a24c800 | 538 | &btime, |
539 | &dir | |
c0fe3827 | 540 | ); |
f3b52983 | 541 | obt = btime; |
1d14ffa9 FB |
542 | } |
543 | else { | |
7a24c800 | 544 | snd_pcm_uframes_t bsize = req->buffer_size; |
1d14ffa9 | 545 | |
7a24c800 | 546 | err = snd_pcm_hw_params_set_buffer_size_near ( |
547 | handle, | |
548 | hw_params, | |
549 | &bsize | |
550 | ); | |
f3b52983 | 551 | obt = bsize; |
7a24c800 | 552 | } |
553 | if (err < 0) { | |
554 | alsa_logerr2 (err, typ, "Failed to set buffer %s to %d\n", | |
555 | size_in_usec ? "time" : "size", req->buffer_size); | |
556 | goto err; | |
557 | } | |
f3b52983 | 558 | |
64333899 | 559 | if ((req->override_mask & 2) && (obt - req->buffer_size)) |
f3b52983 | 560 | dolog ("Requested buffer %s %u was rejected, using %lu\n", |
561 | size_in_usec ? "time" : "size", req->buffer_size, obt); | |
7a24c800 | 562 | } |
563 | ||
564 | if (req->period_size) { | |
f3b52983 | 565 | unsigned long obt; |
566 | ||
7a24c800 | 567 | if (size_in_usec) { |
568 | int dir = 0; | |
569 | unsigned int ptime = req->period_size; | |
1d14ffa9 | 570 | |
7a24c800 | 571 | err = snd_pcm_hw_params_set_period_time_near ( |
572 | handle, | |
1d14ffa9 | 573 | hw_params, |
7a24c800 | 574 | &ptime, |
575 | &dir | |
1d14ffa9 | 576 | ); |
f3b52983 | 577 | obt = ptime; |
7a24c800 | 578 | } |
579 | else { | |
a7bb29ba | 580 | int dir = 0; |
7a24c800 | 581 | snd_pcm_uframes_t psize = req->period_size; |
1d14ffa9 | 582 | |
a7bb29ba | 583 | err = snd_pcm_hw_params_set_period_size_near ( |
1d14ffa9 FB |
584 | handle, |
585 | hw_params, | |
a7bb29ba | 586 | &psize, |
587 | &dir | |
1d14ffa9 | 588 | ); |
f3b52983 | 589 | obt = psize; |
1d14ffa9 | 590 | } |
7a24c800 | 591 | |
592 | if (err < 0) { | |
593 | alsa_logerr2 (err, typ, "Failed to set period %s to %d\n", | |
594 | size_in_usec ? "time" : "size", req->period_size); | |
595 | goto err; | |
596 | } | |
f3b52983 | 597 | |
541ba4e7 | 598 | if (((req->override_mask & 1) && (obt - req->period_size))) |
f3b52983 | 599 | dolog ("Requested period %s %u was rejected, using %lu\n", |
600 | size_in_usec ? "time" : "size", req->period_size, obt); | |
1d14ffa9 FB |
601 | } |
602 | ||
603 | err = snd_pcm_hw_params (handle, hw_params); | |
604 | if (err < 0) { | |
605 | alsa_logerr2 (err, typ, "Failed to apply audio parameters\n"); | |
606 | goto err; | |
607 | } | |
608 | ||
609 | err = snd_pcm_hw_params_get_buffer_size (hw_params, &obt_buffer_size); | |
610 | if (err < 0) { | |
611 | alsa_logerr2 (err, typ, "Failed to get buffer size\n"); | |
612 | goto err; | |
613 | } | |
614 | ||
ca9cc28c AZ |
615 | err = snd_pcm_hw_params_get_format (hw_params, &obtfmt); |
616 | if (err < 0) { | |
617 | alsa_logerr2 (err, typ, "Failed to get format\n"); | |
618 | goto err; | |
619 | } | |
620 | ||
621 | if (alsa_to_audfmt (obtfmt, &obt->fmt, &obt->endianness)) { | |
622 | dolog ("Invalid format was returned %d\n", obtfmt); | |
623 | goto err; | |
624 | } | |
625 | ||
1d14ffa9 FB |
626 | err = snd_pcm_prepare (handle); |
627 | if (err < 0) { | |
c0fe3827 | 628 | alsa_logerr2 (err, typ, "Could not prepare handle %p\n", handle); |
1d14ffa9 FB |
629 | goto err; |
630 | } | |
631 | ||
1d14ffa9 FB |
632 | if (!in && conf.threshold) { |
633 | snd_pcm_uframes_t threshold; | |
634 | int bytes_per_sec; | |
635 | ||
ca9cc28c AZ |
636 | bytes_per_sec = freq << (nchannels == 2); |
637 | ||
638 | switch (obt->fmt) { | |
639 | case AUD_FMT_S8: | |
640 | case AUD_FMT_U8: | |
641 | break; | |
642 | ||
643 | case AUD_FMT_S16: | |
644 | case AUD_FMT_U16: | |
645 | bytes_per_sec <<= 1; | |
646 | break; | |
647 | ||
648 | case AUD_FMT_S32: | |
649 | case AUD_FMT_U32: | |
650 | bytes_per_sec <<= 2; | |
651 | break; | |
652 | } | |
1d14ffa9 FB |
653 | |
654 | threshold = (conf.threshold * bytes_per_sec) / 1000; | |
655 | alsa_set_threshold (handle, threshold); | |
656 | } | |
657 | ||
1d14ffa9 FB |
658 | obt->nchannels = nchannels; |
659 | obt->freq = freq; | |
c0fe3827 | 660 | obt->samples = obt_buffer_size; |
ca9cc28c | 661 | |
1d14ffa9 FB |
662 | *handlep = handle; |
663 | ||
ca9cc28c AZ |
664 | if (conf.verbose && |
665 | (obt->fmt != req->fmt || | |
666 | obt->nchannels != req->nchannels || | |
667 | obt->freq != req->freq)) { | |
668 | dolog ("Audio paramters for %s\n", typ); | |
1d14ffa9 | 669 | alsa_dump_info (req, obt); |
1d14ffa9 FB |
670 | } |
671 | ||
672 | #ifdef DEBUG | |
673 | alsa_dump_info (req, obt); | |
674 | #endif | |
675 | return 0; | |
676 | ||
677 | err: | |
6ebfda13 | 678 | alsa_anal_close1 (&handle); |
1d14ffa9 FB |
679 | return -1; |
680 | } | |
681 | ||
571ec3d6 FB |
682 | static snd_pcm_sframes_t alsa_get_avail (snd_pcm_t *handle) |
683 | { | |
684 | snd_pcm_sframes_t avail; | |
685 | ||
686 | avail = snd_pcm_avail_update (handle); | |
687 | if (avail < 0) { | |
688 | if (avail == -EPIPE) { | |
689 | if (!alsa_recover (handle)) { | |
690 | avail = snd_pcm_avail_update (handle); | |
691 | } | |
692 | } | |
693 | ||
694 | if (avail < 0) { | |
695 | alsa_logerr (avail, | |
696 | "Could not obtain number of available frames\n"); | |
697 | return -1; | |
698 | } | |
699 | } | |
700 | ||
701 | return avail; | |
702 | } | |
703 | ||
541ba4e7 | 704 | static void alsa_write_pending (ALSAVoiceOut *alsa) |
1d14ffa9 | 705 | { |
541ba4e7 | 706 | HWVoiceOut *hw = &alsa->hw; |
1d14ffa9 | 707 | |
541ba4e7 | 708 | while (alsa->pending) { |
709 | int left_till_end_samples = hw->samples - alsa->wpos; | |
710 | int len = audio_MIN (alsa->pending, left_till_end_samples); | |
711 | char *src = advance (alsa->pcm_buf, alsa->wpos << hw->info.shift); | |
1d14ffa9 | 712 | |
571ec3d6 | 713 | while (len) { |
541ba4e7 | 714 | snd_pcm_sframes_t written; |
715 | ||
716 | written = snd_pcm_writei (alsa->handle, src, len); | |
4787c71d | 717 | |
571ec3d6 | 718 | if (written <= 0) { |
4787c71d | 719 | switch (written) { |
571ec3d6 FB |
720 | case 0: |
721 | if (conf.verbose) { | |
722 | dolog ("Failed to write %d frames (wrote zero)\n", len); | |
4787c71d | 723 | } |
541ba4e7 | 724 | return; |
4787c71d | 725 | |
571ec3d6 FB |
726 | case -EPIPE: |
727 | if (alsa_recover (alsa->handle)) { | |
728 | alsa_logerr (written, "Failed to write %d frames\n", | |
729 | len); | |
541ba4e7 | 730 | return; |
571ec3d6 FB |
731 | } |
732 | if (conf.verbose) { | |
733 | dolog ("Recovering from playback xrun\n"); | |
734 | } | |
4787c71d FB |
735 | continue; |
736 | ||
86635821 BM |
737 | case -ESTRPIPE: |
738 | /* stream is suspended and waiting for an | |
739 | application recovery */ | |
740 | if (alsa_resume (alsa->handle)) { | |
741 | alsa_logerr (written, "Failed to write %d frames\n", | |
742 | len); | |
541ba4e7 | 743 | return; |
86635821 BM |
744 | } |
745 | if (conf.verbose) { | |
746 | dolog ("Resuming suspended output stream\n"); | |
747 | } | |
748 | continue; | |
749 | ||
571ec3d6 | 750 | case -EAGAIN: |
541ba4e7 | 751 | return; |
571ec3d6 | 752 | |
4787c71d | 753 | default: |
541ba4e7 | 754 | alsa_logerr (written, "Failed to write %d frames from %p\n", |
755 | len, src); | |
756 | return; | |
1d14ffa9 | 757 | } |
1d14ffa9 | 758 | } |
1d14ffa9 | 759 | |
541ba4e7 | 760 | alsa->wpos = (alsa->wpos + written) % hw->samples; |
761 | alsa->pending -= written; | |
571ec3d6 | 762 | len -= written; |
4787c71d | 763 | } |
1d14ffa9 | 764 | } |
541ba4e7 | 765 | } |
766 | ||
bdff253c | 767 | static int alsa_run_out (HWVoiceOut *hw, int live) |
541ba4e7 | 768 | { |
769 | ALSAVoiceOut *alsa = (ALSAVoiceOut *) hw; | |
bdff253c | 770 | int decr; |
541ba4e7 | 771 | snd_pcm_sframes_t avail; |
772 | ||
541ba4e7 | 773 | avail = alsa_get_avail (alsa->handle); |
774 | if (avail < 0) { | |
775 | dolog ("Could not get number of available playback frames\n"); | |
776 | return 0; | |
777 | } | |
778 | ||
779 | decr = audio_MIN (live, avail); | |
780 | decr = audio_pcm_hw_clip_out (hw, alsa->pcm_buf, decr, alsa->pending); | |
781 | alsa->pending += decr; | |
782 | alsa_write_pending (alsa); | |
1d14ffa9 FB |
783 | return decr; |
784 | } | |
785 | ||
786 | static void alsa_fini_out (HWVoiceOut *hw) | |
787 | { | |
788 | ALSAVoiceOut *alsa = (ALSAVoiceOut *) hw; | |
789 | ||
790 | ldebug ("alsa_fini\n"); | |
6ebfda13 | 791 | alsa_anal_close (&alsa->handle, &alsa->pollhlp); |
1d14ffa9 FB |
792 | |
793 | if (alsa->pcm_buf) { | |
794 | qemu_free (alsa->pcm_buf); | |
795 | alsa->pcm_buf = NULL; | |
796 | } | |
797 | } | |
798 | ||
1ea879e5 | 799 | static int alsa_init_out (HWVoiceOut *hw, struct audsettings *as) |
1d14ffa9 FB |
800 | { |
801 | ALSAVoiceOut *alsa = (ALSAVoiceOut *) hw; | |
802 | struct alsa_params_req req; | |
803 | struct alsa_params_obt obt; | |
1d14ffa9 | 804 | snd_pcm_t *handle; |
1ea879e5 | 805 | struct audsettings obt_as; |
1d14ffa9 | 806 | |
c0fe3827 FB |
807 | req.fmt = aud_to_alsafmt (as->fmt); |
808 | req.freq = as->freq; | |
809 | req.nchannels = as->nchannels; | |
1d14ffa9 FB |
810 | req.period_size = conf.period_size_out; |
811 | req.buffer_size = conf.buffer_size_out; | |
23fb600b | 812 | req.size_in_usec = conf.size_in_usec_out; |
97f155dd GH |
813 | req.override_mask = |
814 | (conf.period_size_out_overridden ? 1 : 0) | | |
815 | (conf.buffer_size_out_overridden ? 2 : 0); | |
1d14ffa9 FB |
816 | |
817 | if (alsa_open (0, &req, &obt, &handle)) { | |
818 | return -1; | |
819 | } | |
820 | ||
c0fe3827 FB |
821 | obt_as.freq = obt.freq; |
822 | obt_as.nchannels = obt.nchannels; | |
ca9cc28c AZ |
823 | obt_as.fmt = obt.fmt; |
824 | obt_as.endianness = obt.endianness; | |
c0fe3827 | 825 | |
d929eba5 | 826 | audio_pcm_init_info (&hw->info, &obt_as); |
c0fe3827 | 827 | hw->samples = obt.samples; |
1d14ffa9 | 828 | |
c0fe3827 | 829 | alsa->pcm_buf = audio_calloc (AUDIO_FUNC, obt.samples, 1 << hw->info.shift); |
1d14ffa9 | 830 | if (!alsa->pcm_buf) { |
4787c71d FB |
831 | dolog ("Could not allocate DAC buffer (%d samples, each %d bytes)\n", |
832 | hw->samples, 1 << hw->info.shift); | |
6ebfda13 | 833 | alsa_anal_close1 (&handle); |
1d14ffa9 FB |
834 | return -1; |
835 | } | |
836 | ||
837 | alsa->handle = handle; | |
1d14ffa9 FB |
838 | return 0; |
839 | } | |
840 | ||
571ec3d6 | 841 | static int alsa_voice_ctl (snd_pcm_t *handle, const char *typ, int pause) |
1d14ffa9 FB |
842 | { |
843 | int err; | |
571ec3d6 FB |
844 | |
845 | if (pause) { | |
846 | err = snd_pcm_drop (handle); | |
847 | if (err < 0) { | |
32d448c4 | 848 | alsa_logerr (err, "Could not stop %s\n", typ); |
571ec3d6 FB |
849 | return -1; |
850 | } | |
851 | } | |
852 | else { | |
853 | err = snd_pcm_prepare (handle); | |
854 | if (err < 0) { | |
32d448c4 | 855 | alsa_logerr (err, "Could not prepare handle for %s\n", typ); |
571ec3d6 FB |
856 | return -1; |
857 | } | |
858 | } | |
859 | ||
860 | return 0; | |
861 | } | |
862 | ||
863 | static int alsa_ctl_out (HWVoiceOut *hw, int cmd, ...) | |
864 | { | |
1d14ffa9 FB |
865 | ALSAVoiceOut *alsa = (ALSAVoiceOut *) hw; |
866 | ||
867 | switch (cmd) { | |
868 | case VOICE_ENABLE: | |
301901b5 | 869 | { |
870 | va_list ap; | |
871 | int poll_mode; | |
872 | ||
873 | va_start (ap, cmd); | |
874 | poll_mode = va_arg (ap, int); | |
875 | va_end (ap); | |
876 | ||
877 | ldebug ("enabling voice\n"); | |
878 | if (poll_mode && alsa_poll_out (hw)) { | |
879 | poll_mode = 0; | |
880 | } | |
881 | hw->poll_mode = poll_mode; | |
882 | return alsa_voice_ctl (alsa->handle, "playback", 0); | |
8b438ba3 | 883 | } |
1d14ffa9 FB |
884 | |
885 | case VOICE_DISABLE: | |
886 | ldebug ("disabling voice\n"); | |
571ec3d6 | 887 | return alsa_voice_ctl (alsa->handle, "playback", 1); |
1d14ffa9 | 888 | } |
571ec3d6 FB |
889 | |
890 | return -1; | |
1d14ffa9 FB |
891 | } |
892 | ||
1ea879e5 | 893 | static int alsa_init_in (HWVoiceIn *hw, struct audsettings *as) |
1d14ffa9 FB |
894 | { |
895 | ALSAVoiceIn *alsa = (ALSAVoiceIn *) hw; | |
896 | struct alsa_params_req req; | |
897 | struct alsa_params_obt obt; | |
1d14ffa9 | 898 | snd_pcm_t *handle; |
1ea879e5 | 899 | struct audsettings obt_as; |
1d14ffa9 | 900 | |
c0fe3827 FB |
901 | req.fmt = aud_to_alsafmt (as->fmt); |
902 | req.freq = as->freq; | |
903 | req.nchannels = as->nchannels; | |
1d14ffa9 FB |
904 | req.period_size = conf.period_size_in; |
905 | req.buffer_size = conf.buffer_size_in; | |
7a24c800 | 906 | req.size_in_usec = conf.size_in_usec_in; |
97f155dd GH |
907 | req.override_mask = |
908 | (conf.period_size_in_overridden ? 1 : 0) | | |
909 | (conf.buffer_size_in_overridden ? 2 : 0); | |
1d14ffa9 FB |
910 | |
911 | if (alsa_open (1, &req, &obt, &handle)) { | |
912 | return -1; | |
913 | } | |
914 | ||
c0fe3827 FB |
915 | obt_as.freq = obt.freq; |
916 | obt_as.nchannels = obt.nchannels; | |
ca9cc28c AZ |
917 | obt_as.fmt = obt.fmt; |
918 | obt_as.endianness = obt.endianness; | |
c0fe3827 | 919 | |
d929eba5 | 920 | audio_pcm_init_info (&hw->info, &obt_as); |
c0fe3827 FB |
921 | hw->samples = obt.samples; |
922 | ||
923 | alsa->pcm_buf = audio_calloc (AUDIO_FUNC, hw->samples, 1 << hw->info.shift); | |
1d14ffa9 | 924 | if (!alsa->pcm_buf) { |
4787c71d FB |
925 | dolog ("Could not allocate ADC buffer (%d samples, each %d bytes)\n", |
926 | hw->samples, 1 << hw->info.shift); | |
6ebfda13 | 927 | alsa_anal_close1 (&handle); |
1d14ffa9 FB |
928 | return -1; |
929 | } | |
930 | ||
931 | alsa->handle = handle; | |
932 | return 0; | |
933 | } | |
934 | ||
935 | static void alsa_fini_in (HWVoiceIn *hw) | |
936 | { | |
937 | ALSAVoiceIn *alsa = (ALSAVoiceIn *) hw; | |
938 | ||
6ebfda13 | 939 | alsa_anal_close (&alsa->handle, &alsa->pollhlp); |
1d14ffa9 FB |
940 | |
941 | if (alsa->pcm_buf) { | |
942 | qemu_free (alsa->pcm_buf); | |
943 | alsa->pcm_buf = NULL; | |
944 | } | |
945 | } | |
946 | ||
947 | static int alsa_run_in (HWVoiceIn *hw) | |
948 | { | |
949 | ALSAVoiceIn *alsa = (ALSAVoiceIn *) hw; | |
950 | int hwshift = hw->info.shift; | |
951 | int i; | |
952 | int live = audio_pcm_hw_get_live_in (hw); | |
953 | int dead = hw->samples - live; | |
571ec3d6 | 954 | int decr; |
1d14ffa9 FB |
955 | struct { |
956 | int add; | |
957 | int len; | |
958 | } bufs[2] = { | |
98f9f48c | 959 | { .add = hw->wpos, .len = 0 }, |
960 | { .add = 0, .len = 0 } | |
1d14ffa9 | 961 | }; |
571ec3d6 | 962 | snd_pcm_sframes_t avail; |
1d14ffa9 FB |
963 | snd_pcm_uframes_t read_samples = 0; |
964 | ||
965 | if (!dead) { | |
966 | return 0; | |
967 | } | |
968 | ||
571ec3d6 FB |
969 | avail = alsa_get_avail (alsa->handle); |
970 | if (avail < 0) { | |
971 | dolog ("Could not get number of captured frames\n"); | |
972 | return 0; | |
973 | } | |
974 | ||
86635821 BM |
975 | if (!avail) { |
976 | snd_pcm_state_t state; | |
977 | ||
978 | state = snd_pcm_state (alsa->handle); | |
979 | switch (state) { | |
980 | case SND_PCM_STATE_PREPARED: | |
981 | avail = hw->samples; | |
982 | break; | |
983 | case SND_PCM_STATE_SUSPENDED: | |
984 | /* stream is suspended and waiting for an application recovery */ | |
985 | if (alsa_resume (alsa->handle)) { | |
986 | dolog ("Failed to resume suspended input stream\n"); | |
987 | return 0; | |
988 | } | |
989 | if (conf.verbose) { | |
990 | dolog ("Resuming suspended input stream\n"); | |
991 | } | |
992 | break; | |
993 | default: | |
994 | if (conf.verbose) { | |
995 | dolog ("No frames available and ALSA state is %d\n", state); | |
996 | } | |
997 | return 0; | |
998 | } | |
571ec3d6 FB |
999 | } |
1000 | ||
1001 | decr = audio_MIN (dead, avail); | |
1002 | if (!decr) { | |
1003 | return 0; | |
1004 | } | |
1005 | ||
1006 | if (hw->wpos + decr > hw->samples) { | |
1d14ffa9 | 1007 | bufs[0].len = (hw->samples - hw->wpos); |
571ec3d6 | 1008 | bufs[1].len = (decr - (hw->samples - hw->wpos)); |
1d14ffa9 FB |
1009 | } |
1010 | else { | |
571ec3d6 | 1011 | bufs[0].len = decr; |
1d14ffa9 FB |
1012 | } |
1013 | ||
1d14ffa9 FB |
1014 | for (i = 0; i < 2; ++i) { |
1015 | void *src; | |
1ea879e5 | 1016 | struct st_sample *dst; |
1d14ffa9 FB |
1017 | snd_pcm_sframes_t nread; |
1018 | snd_pcm_uframes_t len; | |
1019 | ||
1020 | len = bufs[i].len; | |
1021 | ||
1022 | src = advance (alsa->pcm_buf, bufs[i].add << hwshift); | |
1023 | dst = hw->conv_buf + bufs[i].add; | |
1024 | ||
1025 | while (len) { | |
1026 | nread = snd_pcm_readi (alsa->handle, src, len); | |
1027 | ||
571ec3d6 | 1028 | if (nread <= 0) { |
1d14ffa9 | 1029 | switch (nread) { |
571ec3d6 FB |
1030 | case 0: |
1031 | if (conf.verbose) { | |
1032 | dolog ("Failed to read %ld frames (read zero)\n", len); | |
1d14ffa9 | 1033 | } |
1d14ffa9 FB |
1034 | goto exit; |
1035 | ||
571ec3d6 FB |
1036 | case -EPIPE: |
1037 | if (alsa_recover (alsa->handle)) { | |
1038 | alsa_logerr (nread, "Failed to read %ld frames\n", len); | |
1039 | goto exit; | |
1040 | } | |
1041 | if (conf.verbose) { | |
1042 | dolog ("Recovering from capture xrun\n"); | |
1043 | } | |
1d14ffa9 FB |
1044 | continue; |
1045 | ||
571ec3d6 FB |
1046 | case -EAGAIN: |
1047 | goto exit; | |
1048 | ||
1d14ffa9 FB |
1049 | default: |
1050 | alsa_logerr ( | |
1051 | nread, | |
1052 | "Failed to read %ld frames from %p\n", | |
1053 | len, | |
1054 | src | |
1055 | ); | |
1056 | goto exit; | |
1057 | } | |
1058 | } | |
1059 | ||
1060 | hw->conv (dst, src, nread, &nominal_volume); | |
1061 | ||
1062 | src = advance (src, nread << hwshift); | |
1063 | dst += nread; | |
1064 | ||
1065 | read_samples += nread; | |
1066 | len -= nread; | |
1067 | } | |
1068 | } | |
1069 | ||
1070 | exit: | |
1071 | hw->wpos = (hw->wpos + read_samples) % hw->samples; | |
1072 | return read_samples; | |
1073 | } | |
1074 | ||
1075 | static int alsa_read (SWVoiceIn *sw, void *buf, int size) | |
1076 | { | |
1077 | return audio_pcm_sw_read (sw, buf, size); | |
1078 | } | |
1079 | ||
1080 | static int alsa_ctl_in (HWVoiceIn *hw, int cmd, ...) | |
1081 | { | |
571ec3d6 FB |
1082 | ALSAVoiceIn *alsa = (ALSAVoiceIn *) hw; |
1083 | ||
1084 | switch (cmd) { | |
1085 | case VOICE_ENABLE: | |
a628b869 | 1086 | { |
1087 | va_list ap; | |
1088 | int poll_mode; | |
8b438ba3 | 1089 | |
a628b869 | 1090 | va_start (ap, cmd); |
1091 | poll_mode = va_arg (ap, int); | |
1092 | va_end (ap); | |
1093 | ||
1094 | ldebug ("enabling voice\n"); | |
1095 | if (poll_mode && alsa_poll_in (hw)) { | |
1096 | poll_mode = 0; | |
1097 | } | |
1098 | hw->poll_mode = poll_mode; | |
1099 | ||
1100 | return alsa_voice_ctl (alsa->handle, "capture", 0); | |
1101 | } | |
571ec3d6 FB |
1102 | |
1103 | case VOICE_DISABLE: | |
1104 | ldebug ("disabling voice\n"); | |
8b438ba3 | 1105 | if (hw->poll_mode) { |
1106 | hw->poll_mode = 0; | |
1107 | alsa_fini_poll (&alsa->pollhlp); | |
1108 | } | |
571ec3d6 FB |
1109 | return alsa_voice_ctl (alsa->handle, "capture", 1); |
1110 | } | |
1111 | ||
1112 | return -1; | |
1d14ffa9 FB |
1113 | } |
1114 | ||
1115 | static void *alsa_audio_init (void) | |
1116 | { | |
1117 | return &conf; | |
1118 | } | |
1119 | ||
1120 | static void alsa_audio_fini (void *opaque) | |
1121 | { | |
1122 | (void) opaque; | |
1123 | } | |
1124 | ||
1125 | static struct audio_option alsa_options[] = { | |
98f9f48c | 1126 | { |
1127 | .name = "DAC_SIZE_IN_USEC", | |
1128 | .tag = AUD_OPT_BOOL, | |
1129 | .valp = &conf.size_in_usec_out, | |
1130 | .descr = "DAC period/buffer size in microseconds (otherwise in frames)" | |
1131 | }, | |
1132 | { | |
1133 | .name = "DAC_PERIOD_SIZE", | |
1134 | .tag = AUD_OPT_INT, | |
1135 | .valp = &conf.period_size_out, | |
1136 | .descr = "DAC period size (0 to go with system default)", | |
1137 | .overriddenp = &conf.period_size_out_overridden | |
1138 | }, | |
1139 | { | |
1140 | .name = "DAC_BUFFER_SIZE", | |
1141 | .tag = AUD_OPT_INT, | |
1142 | .valp = &conf.buffer_size_out, | |
1143 | .descr = "DAC buffer size (0 to go with system default)", | |
1144 | .overriddenp = &conf.buffer_size_out_overridden | |
1145 | }, | |
1146 | { | |
1147 | .name = "ADC_SIZE_IN_USEC", | |
1148 | .tag = AUD_OPT_BOOL, | |
1149 | .valp = &conf.size_in_usec_in, | |
1150 | .descr = | |
1151 | "ADC period/buffer size in microseconds (otherwise in frames)" | |
1152 | }, | |
1153 | { | |
1154 | .name = "ADC_PERIOD_SIZE", | |
1155 | .tag = AUD_OPT_INT, | |
1156 | .valp = &conf.period_size_in, | |
1157 | .descr = "ADC period size (0 to go with system default)", | |
1158 | .overriddenp = &conf.period_size_in_overridden | |
1159 | }, | |
1160 | { | |
1161 | .name = "ADC_BUFFER_SIZE", | |
1162 | .tag = AUD_OPT_INT, | |
1163 | .valp = &conf.buffer_size_in, | |
1164 | .descr = "ADC buffer size (0 to go with system default)", | |
1165 | .overriddenp = &conf.buffer_size_in_overridden | |
1166 | }, | |
1167 | { | |
1168 | .name = "THRESHOLD", | |
1169 | .tag = AUD_OPT_INT, | |
1170 | .valp = &conf.threshold, | |
1171 | .descr = "(undocumented)" | |
1172 | }, | |
1173 | { | |
1174 | .name = "DAC_DEV", | |
1175 | .tag = AUD_OPT_STR, | |
1176 | .valp = &conf.pcm_name_out, | |
1177 | .descr = "DAC device name (for instance dmix)" | |
1178 | }, | |
1179 | { | |
1180 | .name = "ADC_DEV", | |
1181 | .tag = AUD_OPT_STR, | |
1182 | .valp = &conf.pcm_name_in, | |
1183 | .descr = "ADC device name" | |
1184 | }, | |
1185 | { | |
1186 | .name = "VERBOSE", | |
1187 | .tag = AUD_OPT_BOOL, | |
1188 | .valp = &conf.verbose, | |
1189 | .descr = "Behave in a more verbose way" | |
1190 | }, | |
2700efa3 | 1191 | { /* End of list */ } |
1d14ffa9 FB |
1192 | }; |
1193 | ||
35f4b58c | 1194 | static struct audio_pcm_ops alsa_pcm_ops = { |
1dd3e4d1 JQ |
1195 | .init_out = alsa_init_out, |
1196 | .fini_out = alsa_fini_out, | |
1197 | .run_out = alsa_run_out, | |
1198 | .write = alsa_write, | |
1199 | .ctl_out = alsa_ctl_out, | |
1200 | ||
1201 | .init_in = alsa_init_in, | |
1202 | .fini_in = alsa_fini_in, | |
1203 | .run_in = alsa_run_in, | |
1204 | .read = alsa_read, | |
8b438ba3 | 1205 | .ctl_in = alsa_ctl_in, |
1d14ffa9 FB |
1206 | }; |
1207 | ||
1208 | struct audio_driver alsa_audio_driver = { | |
bee37f32 JQ |
1209 | .name = "alsa", |
1210 | .descr = "ALSA http://www.alsa-project.org", | |
1211 | .options = alsa_options, | |
1212 | .init = alsa_audio_init, | |
1213 | .fini = alsa_audio_fini, | |
1214 | .pcm_ops = &alsa_pcm_ops, | |
1215 | .can_be_default = 1, | |
1216 | .max_voices_out = INT_MAX, | |
1217 | .max_voices_in = INT_MAX, | |
1218 | .voice_size_out = sizeof (ALSAVoiceOut), | |
1219 | .voice_size_in = sizeof (ALSAVoiceIn) | |
1d14ffa9 | 1220 | }; |