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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; | |
40 | }; | |
41 | ||
1d14ffa9 FB |
42 | typedef struct ALSAVoiceOut { |
43 | HWVoiceOut hw; | |
44 | void *pcm_buf; | |
45 | snd_pcm_t *handle; | |
8b438ba3 | 46 | struct pollhlp pollhlp; |
1d14ffa9 FB |
47 | } ALSAVoiceOut; |
48 | ||
49 | typedef struct ALSAVoiceIn { | |
50 | HWVoiceIn hw; | |
51 | snd_pcm_t *handle; | |
52 | void *pcm_buf; | |
8b438ba3 | 53 | struct pollhlp pollhlp; |
1d14ffa9 FB |
54 | } ALSAVoiceIn; |
55 | ||
56 | static struct { | |
57 | int size_in_usec_in; | |
58 | int size_in_usec_out; | |
59 | const char *pcm_name_in; | |
60 | const char *pcm_name_out; | |
61 | unsigned int buffer_size_in; | |
62 | unsigned int period_size_in; | |
63 | unsigned int buffer_size_out; | |
64 | unsigned int period_size_out; | |
65 | unsigned int threshold; | |
66 | ||
fe8f096b TS |
67 | int buffer_size_in_overridden; |
68 | int period_size_in_overridden; | |
1d14ffa9 | 69 | |
fe8f096b TS |
70 | int buffer_size_out_overridden; |
71 | int period_size_out_overridden; | |
571ec3d6 | 72 | int verbose; |
1d14ffa9 | 73 | } conf = { |
adf7d8fb | 74 | .buffer_size_out = 1024, |
8ead62cf FB |
75 | .pcm_name_out = "default", |
76 | .pcm_name_in = "default", | |
1d14ffa9 FB |
77 | }; |
78 | ||
79 | struct alsa_params_req { | |
ca9cc28c AZ |
80 | int freq; |
81 | snd_pcm_format_t fmt; | |
82 | int nchannels; | |
7a24c800 | 83 | int size_in_usec; |
64333899 | 84 | int override_mask; |
1d14ffa9 FB |
85 | unsigned int buffer_size; |
86 | unsigned int period_size; | |
87 | }; | |
88 | ||
89 | struct alsa_params_obt { | |
90 | int freq; | |
91 | audfmt_e fmt; | |
ca9cc28c | 92 | int endianness; |
1d14ffa9 | 93 | int nchannels; |
c0fe3827 | 94 | snd_pcm_uframes_t samples; |
1d14ffa9 FB |
95 | }; |
96 | ||
97 | static void GCC_FMT_ATTR (2, 3) alsa_logerr (int err, const char *fmt, ...) | |
98 | { | |
99 | va_list ap; | |
100 | ||
101 | va_start (ap, fmt); | |
102 | AUD_vlog (AUDIO_CAP, fmt, ap); | |
103 | va_end (ap); | |
104 | ||
105 | AUD_log (AUDIO_CAP, "Reason: %s\n", snd_strerror (err)); | |
106 | } | |
107 | ||
108 | static void GCC_FMT_ATTR (3, 4) alsa_logerr2 ( | |
109 | int err, | |
110 | const char *typ, | |
111 | const char *fmt, | |
112 | ... | |
113 | ) | |
114 | { | |
115 | va_list ap; | |
116 | ||
c0fe3827 | 117 | AUD_log (AUDIO_CAP, "Could not initialize %s\n", typ); |
1d14ffa9 FB |
118 | |
119 | va_start (ap, fmt); | |
120 | AUD_vlog (AUDIO_CAP, fmt, ap); | |
121 | va_end (ap); | |
122 | ||
123 | AUD_log (AUDIO_CAP, "Reason: %s\n", snd_strerror (err)); | |
124 | } | |
125 | ||
6ebfda13 | 126 | static void alsa_fini_poll (struct pollhlp *hlp) |
127 | { | |
128 | int i; | |
129 | struct pollfd *pfds = hlp->pfds; | |
130 | ||
131 | if (pfds) { | |
132 | for (i = 0; i < hlp->count; ++i) { | |
133 | qemu_set_fd_handler (pfds[i].fd, NULL, NULL, NULL); | |
134 | } | |
135 | qemu_free (pfds); | |
136 | } | |
137 | hlp->pfds = NULL; | |
138 | hlp->count = 0; | |
139 | hlp->handle = NULL; | |
140 | } | |
141 | ||
142 | static void alsa_anal_close1 (snd_pcm_t **handlep) | |
1d14ffa9 FB |
143 | { |
144 | int err = snd_pcm_close (*handlep); | |
145 | if (err) { | |
146 | alsa_logerr (err, "Failed to close PCM handle %p\n", *handlep); | |
147 | } | |
148 | *handlep = NULL; | |
149 | } | |
150 | ||
6ebfda13 | 151 | static void alsa_anal_close (snd_pcm_t **handlep, struct pollhlp *hlp) |
152 | { | |
153 | alsa_fini_poll (hlp); | |
154 | alsa_anal_close1 (handlep); | |
155 | } | |
156 | ||
8b438ba3 | 157 | static int alsa_recover (snd_pcm_t *handle) |
158 | { | |
159 | int err = snd_pcm_prepare (handle); | |
160 | if (err < 0) { | |
161 | alsa_logerr (err, "Failed to prepare handle %p\n", handle); | |
162 | return -1; | |
163 | } | |
164 | return 0; | |
165 | } | |
166 | ||
167 | static int alsa_resume (snd_pcm_t *handle) | |
168 | { | |
169 | int err = snd_pcm_resume (handle); | |
170 | if (err < 0) { | |
171 | alsa_logerr (err, "Failed to resume handle %p\n", handle); | |
172 | return -1; | |
173 | } | |
174 | return 0; | |
175 | } | |
176 | ||
177 | static void alsa_poll_handler (void *opaque) | |
178 | { | |
179 | int err, count; | |
180 | snd_pcm_state_t state; | |
181 | struct pollhlp *hlp = opaque; | |
182 | unsigned short revents; | |
183 | ||
184 | count = poll (hlp->pfds, hlp->count, 0); | |
185 | if (count < 0) { | |
186 | dolog ("alsa_poll_handler: poll %s\n", strerror (errno)); | |
187 | return; | |
188 | } | |
189 | ||
190 | if (!count) { | |
191 | return; | |
192 | } | |
193 | ||
194 | /* XXX: ALSA example uses initial count, not the one returned by | |
195 | poll, correct? */ | |
196 | err = snd_pcm_poll_descriptors_revents (hlp->handle, hlp->pfds, | |
197 | hlp->count, &revents); | |
198 | if (err < 0) { | |
199 | alsa_logerr (err, "snd_pcm_poll_descriptors_revents"); | |
200 | return; | |
201 | } | |
202 | ||
203 | if (!(revents & POLLOUT)) { | |
204 | if (conf.verbose) { | |
205 | dolog ("revents = %d\n", revents); | |
206 | } | |
207 | return; | |
208 | } | |
209 | ||
210 | state = snd_pcm_state (hlp->handle); | |
211 | switch (state) { | |
212 | case SND_PCM_STATE_XRUN: | |
213 | alsa_recover (hlp->handle); | |
214 | break; | |
215 | ||
216 | case SND_PCM_STATE_SUSPENDED: | |
217 | alsa_resume (hlp->handle); | |
218 | break; | |
219 | ||
220 | case SND_PCM_STATE_PREPARED: | |
221 | audio_run ("alsa run (prepared)"); | |
222 | break; | |
223 | ||
224 | case SND_PCM_STATE_RUNNING: | |
225 | audio_run ("alsa run (running)"); | |
226 | break; | |
227 | ||
228 | default: | |
229 | dolog ("Unexpected state %d\n", state); | |
230 | } | |
231 | } | |
232 | ||
233 | static int alsa_poll_helper (snd_pcm_t *handle, struct pollhlp *hlp) | |
234 | { | |
235 | int i, count, err; | |
236 | struct pollfd *pfds; | |
237 | ||
238 | count = snd_pcm_poll_descriptors_count (handle); | |
239 | if (count <= 0) { | |
240 | dolog ("Could not initialize poll mode\n" | |
241 | "Invalid number of poll descriptors %d\n", count); | |
242 | return -1; | |
243 | } | |
244 | ||
245 | pfds = audio_calloc ("alsa_poll_helper", count, sizeof (*pfds)); | |
246 | if (!pfds) { | |
247 | dolog ("Could not initialize poll mode\n"); | |
248 | return -1; | |
249 | } | |
250 | ||
251 | err = snd_pcm_poll_descriptors (handle, pfds, count); | |
252 | if (err < 0) { | |
253 | alsa_logerr (err, "Could not initialize poll mode\n" | |
254 | "Could not obtain poll descriptors\n"); | |
255 | qemu_free (pfds); | |
256 | return -1; | |
257 | } | |
258 | ||
259 | for (i = 0; i < count; ++i) { | |
260 | if (pfds[i].events & POLLIN) { | |
261 | err = qemu_set_fd_handler (pfds[i].fd, alsa_poll_handler, | |
262 | NULL, hlp); | |
263 | } | |
264 | if (pfds[i].events & POLLOUT) { | |
265 | if (conf.verbose) { | |
266 | dolog ("POLLOUT %d %d\n", i, pfds[i].fd); | |
267 | } | |
268 | err = qemu_set_fd_handler (pfds[i].fd, NULL, | |
269 | alsa_poll_handler, hlp); | |
270 | } | |
271 | if (conf.verbose) { | |
272 | dolog ("Set handler events=%#x index=%d fd=%d err=%d\n", | |
273 | pfds[i].events, i, pfds[i].fd, err); | |
274 | } | |
275 | ||
276 | if (err) { | |
277 | dolog ("Failed to set handler events=%#x index=%d fd=%d err=%d\n", | |
278 | pfds[i].events, i, pfds[i].fd, err); | |
279 | ||
280 | while (i--) { | |
281 | qemu_set_fd_handler (pfds[i].fd, NULL, NULL, NULL); | |
282 | } | |
283 | qemu_free (pfds); | |
284 | return -1; | |
285 | } | |
286 | } | |
287 | hlp->pfds = pfds; | |
288 | hlp->count = count; | |
289 | hlp->handle = handle; | |
290 | return 0; | |
291 | } | |
292 | ||
293 | static int alsa_poll_out (HWVoiceOut *hw) | |
294 | { | |
295 | ALSAVoiceOut *alsa = (ALSAVoiceOut *) hw; | |
296 | ||
297 | return alsa_poll_helper (alsa->handle, &alsa->pollhlp); | |
298 | } | |
299 | ||
300 | static int alsa_poll_in (HWVoiceIn *hw) | |
301 | { | |
302 | ALSAVoiceIn *alsa = (ALSAVoiceIn *) hw; | |
303 | ||
304 | return alsa_poll_helper (alsa->handle, &alsa->pollhlp); | |
305 | } | |
306 | ||
1d14ffa9 FB |
307 | static int alsa_write (SWVoiceOut *sw, void *buf, int len) |
308 | { | |
309 | return audio_pcm_sw_write (sw, buf, len); | |
310 | } | |
311 | ||
ca9cc28c | 312 | static snd_pcm_format_t aud_to_alsafmt (audfmt_e fmt) |
1d14ffa9 FB |
313 | { |
314 | switch (fmt) { | |
315 | case AUD_FMT_S8: | |
316 | return SND_PCM_FORMAT_S8; | |
317 | ||
318 | case AUD_FMT_U8: | |
319 | return SND_PCM_FORMAT_U8; | |
320 | ||
321 | case AUD_FMT_S16: | |
322 | return SND_PCM_FORMAT_S16_LE; | |
323 | ||
324 | case AUD_FMT_U16: | |
325 | return SND_PCM_FORMAT_U16_LE; | |
326 | ||
f941aa25 TS |
327 | case AUD_FMT_S32: |
328 | return SND_PCM_FORMAT_S32_LE; | |
329 | ||
330 | case AUD_FMT_U32: | |
331 | return SND_PCM_FORMAT_U32_LE; | |
332 | ||
1d14ffa9 FB |
333 | default: |
334 | dolog ("Internal logic error: Bad audio format %d\n", fmt); | |
335 | #ifdef DEBUG_AUDIO | |
336 | abort (); | |
337 | #endif | |
338 | return SND_PCM_FORMAT_U8; | |
339 | } | |
340 | } | |
341 | ||
ca9cc28c AZ |
342 | static int alsa_to_audfmt (snd_pcm_format_t alsafmt, audfmt_e *fmt, |
343 | int *endianness) | |
1d14ffa9 FB |
344 | { |
345 | switch (alsafmt) { | |
346 | case SND_PCM_FORMAT_S8: | |
347 | *endianness = 0; | |
348 | *fmt = AUD_FMT_S8; | |
349 | break; | |
350 | ||
351 | case SND_PCM_FORMAT_U8: | |
352 | *endianness = 0; | |
353 | *fmt = AUD_FMT_U8; | |
354 | break; | |
355 | ||
356 | case SND_PCM_FORMAT_S16_LE: | |
357 | *endianness = 0; | |
358 | *fmt = AUD_FMT_S16; | |
359 | break; | |
360 | ||
361 | case SND_PCM_FORMAT_U16_LE: | |
362 | *endianness = 0; | |
363 | *fmt = AUD_FMT_U16; | |
364 | break; | |
365 | ||
366 | case SND_PCM_FORMAT_S16_BE: | |
367 | *endianness = 1; | |
368 | *fmt = AUD_FMT_S16; | |
369 | break; | |
370 | ||
371 | case SND_PCM_FORMAT_U16_BE: | |
372 | *endianness = 1; | |
373 | *fmt = AUD_FMT_U16; | |
374 | break; | |
375 | ||
f941aa25 TS |
376 | case SND_PCM_FORMAT_S32_LE: |
377 | *endianness = 0; | |
378 | *fmt = AUD_FMT_S32; | |
379 | break; | |
380 | ||
381 | case SND_PCM_FORMAT_U32_LE: | |
382 | *endianness = 0; | |
383 | *fmt = AUD_FMT_U32; | |
384 | break; | |
385 | ||
386 | case SND_PCM_FORMAT_S32_BE: | |
387 | *endianness = 1; | |
388 | *fmt = AUD_FMT_S32; | |
389 | break; | |
390 | ||
391 | case SND_PCM_FORMAT_U32_BE: | |
392 | *endianness = 1; | |
393 | *fmt = AUD_FMT_U32; | |
394 | break; | |
395 | ||
1d14ffa9 FB |
396 | default: |
397 | dolog ("Unrecognized audio format %d\n", alsafmt); | |
398 | return -1; | |
399 | } | |
400 | ||
401 | return 0; | |
402 | } | |
403 | ||
1d14ffa9 FB |
404 | static void alsa_dump_info (struct alsa_params_req *req, |
405 | struct alsa_params_obt *obt) | |
406 | { | |
407 | dolog ("parameter | requested value | obtained value\n"); | |
408 | dolog ("format | %10d | %10d\n", req->fmt, obt->fmt); | |
409 | dolog ("channels | %10d | %10d\n", | |
410 | req->nchannels, obt->nchannels); | |
411 | dolog ("frequency | %10d | %10d\n", req->freq, obt->freq); | |
412 | dolog ("============================================\n"); | |
413 | dolog ("requested: buffer size %d period size %d\n", | |
414 | req->buffer_size, req->period_size); | |
c0fe3827 | 415 | dolog ("obtained: samples %ld\n", obt->samples); |
1d14ffa9 | 416 | } |
1d14ffa9 FB |
417 | |
418 | static void alsa_set_threshold (snd_pcm_t *handle, snd_pcm_uframes_t threshold) | |
419 | { | |
420 | int err; | |
421 | snd_pcm_sw_params_t *sw_params; | |
422 | ||
423 | snd_pcm_sw_params_alloca (&sw_params); | |
424 | ||
425 | err = snd_pcm_sw_params_current (handle, sw_params); | |
426 | if (err < 0) { | |
c0fe3827 | 427 | dolog ("Could not fully initialize DAC\n"); |
1d14ffa9 FB |
428 | alsa_logerr (err, "Failed to get current software parameters\n"); |
429 | return; | |
430 | } | |
431 | ||
432 | err = snd_pcm_sw_params_set_start_threshold (handle, sw_params, threshold); | |
433 | if (err < 0) { | |
c0fe3827 | 434 | dolog ("Could not fully initialize DAC\n"); |
1d14ffa9 FB |
435 | alsa_logerr (err, "Failed to set software threshold to %ld\n", |
436 | threshold); | |
437 | return; | |
438 | } | |
439 | ||
440 | err = snd_pcm_sw_params (handle, sw_params); | |
441 | if (err < 0) { | |
c0fe3827 | 442 | dolog ("Could not fully initialize DAC\n"); |
1d14ffa9 FB |
443 | alsa_logerr (err, "Failed to set software parameters\n"); |
444 | return; | |
445 | } | |
446 | } | |
447 | ||
448 | static int alsa_open (int in, struct alsa_params_req *req, | |
449 | struct alsa_params_obt *obt, snd_pcm_t **handlep) | |
450 | { | |
451 | snd_pcm_t *handle; | |
452 | snd_pcm_hw_params_t *hw_params; | |
60fe76f3 | 453 | int err; |
7a24c800 | 454 | int size_in_usec; |
60fe76f3 | 455 | unsigned int freq, nchannels; |
1d14ffa9 | 456 | const char *pcm_name = in ? conf.pcm_name_in : conf.pcm_name_out; |
1d14ffa9 FB |
457 | snd_pcm_uframes_t obt_buffer_size; |
458 | const char *typ = in ? "ADC" : "DAC"; | |
ca9cc28c | 459 | snd_pcm_format_t obtfmt; |
1d14ffa9 FB |
460 | |
461 | freq = req->freq; | |
1d14ffa9 | 462 | nchannels = req->nchannels; |
7a24c800 | 463 | size_in_usec = req->size_in_usec; |
1d14ffa9 FB |
464 | |
465 | snd_pcm_hw_params_alloca (&hw_params); | |
466 | ||
467 | err = snd_pcm_open ( | |
468 | &handle, | |
469 | pcm_name, | |
470 | in ? SND_PCM_STREAM_CAPTURE : SND_PCM_STREAM_PLAYBACK, | |
471 | SND_PCM_NONBLOCK | |
472 | ); | |
473 | if (err < 0) { | |
474 | alsa_logerr2 (err, typ, "Failed to open `%s':\n", pcm_name); | |
475 | return -1; | |
476 | } | |
477 | ||
478 | err = snd_pcm_hw_params_any (handle, hw_params); | |
479 | if (err < 0) { | |
480 | alsa_logerr2 (err, typ, "Failed to initialize hardware parameters\n"); | |
481 | goto err; | |
482 | } | |
483 | ||
484 | err = snd_pcm_hw_params_set_access ( | |
485 | handle, | |
486 | hw_params, | |
487 | SND_PCM_ACCESS_RW_INTERLEAVED | |
488 | ); | |
489 | if (err < 0) { | |
490 | alsa_logerr2 (err, typ, "Failed to set access type\n"); | |
491 | goto err; | |
492 | } | |
493 | ||
494 | err = snd_pcm_hw_params_set_format (handle, hw_params, req->fmt); | |
ca9cc28c | 495 | if (err < 0 && conf.verbose) { |
1d14ffa9 | 496 | alsa_logerr2 (err, typ, "Failed to set format %d\n", req->fmt); |
1d14ffa9 FB |
497 | } |
498 | ||
499 | err = snd_pcm_hw_params_set_rate_near (handle, hw_params, &freq, 0); | |
500 | if (err < 0) { | |
501 | alsa_logerr2 (err, typ, "Failed to set frequency %d\n", req->freq); | |
502 | goto err; | |
503 | } | |
504 | ||
505 | err = snd_pcm_hw_params_set_channels_near ( | |
506 | handle, | |
507 | hw_params, | |
508 | &nchannels | |
509 | ); | |
510 | if (err < 0) { | |
511 | alsa_logerr2 (err, typ, "Failed to set number of channels %d\n", | |
512 | req->nchannels); | |
513 | goto err; | |
514 | } | |
515 | ||
516 | if (nchannels != 1 && nchannels != 2) { | |
517 | alsa_logerr2 (err, typ, | |
518 | "Can not handle obtained number of channels %d\n", | |
519 | nchannels); | |
520 | goto err; | |
521 | } | |
522 | ||
7a24c800 | 523 | if (req->buffer_size) { |
f3b52983 | 524 | unsigned long obt; |
525 | ||
7a24c800 | 526 | if (size_in_usec) { |
527 | int dir = 0; | |
528 | unsigned int btime = req->buffer_size; | |
1d14ffa9 FB |
529 | |
530 | err = snd_pcm_hw_params_set_buffer_time_near ( | |
531 | handle, | |
532 | hw_params, | |
7a24c800 | 533 | &btime, |
534 | &dir | |
c0fe3827 | 535 | ); |
f3b52983 | 536 | obt = btime; |
1d14ffa9 FB |
537 | } |
538 | else { | |
7a24c800 | 539 | snd_pcm_uframes_t bsize = req->buffer_size; |
1d14ffa9 | 540 | |
7a24c800 | 541 | err = snd_pcm_hw_params_set_buffer_size_near ( |
542 | handle, | |
543 | hw_params, | |
544 | &bsize | |
545 | ); | |
f3b52983 | 546 | obt = bsize; |
7a24c800 | 547 | } |
548 | if (err < 0) { | |
549 | alsa_logerr2 (err, typ, "Failed to set buffer %s to %d\n", | |
550 | size_in_usec ? "time" : "size", req->buffer_size); | |
551 | goto err; | |
552 | } | |
f3b52983 | 553 | |
64333899 | 554 | if ((req->override_mask & 2) && (obt - req->buffer_size)) |
f3b52983 | 555 | dolog ("Requested buffer %s %u was rejected, using %lu\n", |
556 | size_in_usec ? "time" : "size", req->buffer_size, obt); | |
7a24c800 | 557 | } |
558 | ||
559 | if (req->period_size) { | |
f3b52983 | 560 | unsigned long obt; |
561 | ||
7a24c800 | 562 | if (size_in_usec) { |
563 | int dir = 0; | |
564 | unsigned int ptime = req->period_size; | |
1d14ffa9 | 565 | |
7a24c800 | 566 | err = snd_pcm_hw_params_set_period_time_near ( |
567 | handle, | |
1d14ffa9 | 568 | hw_params, |
7a24c800 | 569 | &ptime, |
570 | &dir | |
1d14ffa9 | 571 | ); |
f3b52983 | 572 | obt = ptime; |
7a24c800 | 573 | } |
574 | else { | |
a7bb29ba | 575 | int dir = 0; |
7a24c800 | 576 | snd_pcm_uframes_t psize = req->period_size; |
1d14ffa9 | 577 | |
a7bb29ba | 578 | err = snd_pcm_hw_params_set_period_size_near ( |
1d14ffa9 FB |
579 | handle, |
580 | hw_params, | |
a7bb29ba | 581 | &psize, |
582 | &dir | |
1d14ffa9 | 583 | ); |
f3b52983 | 584 | obt = psize; |
1d14ffa9 | 585 | } |
7a24c800 | 586 | |
587 | if (err < 0) { | |
588 | alsa_logerr2 (err, typ, "Failed to set period %s to %d\n", | |
589 | size_in_usec ? "time" : "size", req->period_size); | |
590 | goto err; | |
591 | } | |
f3b52983 | 592 | |
64333899 | 593 | if ((req->override_mask & 1) && (obt - req->period_size)) |
f3b52983 | 594 | dolog ("Requested period %s %u was rejected, using %lu\n", |
595 | size_in_usec ? "time" : "size", req->period_size, obt); | |
1d14ffa9 FB |
596 | } |
597 | ||
598 | err = snd_pcm_hw_params (handle, hw_params); | |
599 | if (err < 0) { | |
600 | alsa_logerr2 (err, typ, "Failed to apply audio parameters\n"); | |
601 | goto err; | |
602 | } | |
603 | ||
604 | err = snd_pcm_hw_params_get_buffer_size (hw_params, &obt_buffer_size); | |
605 | if (err < 0) { | |
606 | alsa_logerr2 (err, typ, "Failed to get buffer size\n"); | |
607 | goto err; | |
608 | } | |
609 | ||
ca9cc28c AZ |
610 | err = snd_pcm_hw_params_get_format (hw_params, &obtfmt); |
611 | if (err < 0) { | |
612 | alsa_logerr2 (err, typ, "Failed to get format\n"); | |
613 | goto err; | |
614 | } | |
615 | ||
616 | if (alsa_to_audfmt (obtfmt, &obt->fmt, &obt->endianness)) { | |
617 | dolog ("Invalid format was returned %d\n", obtfmt); | |
618 | goto err; | |
619 | } | |
620 | ||
1d14ffa9 FB |
621 | err = snd_pcm_prepare (handle); |
622 | if (err < 0) { | |
c0fe3827 | 623 | alsa_logerr2 (err, typ, "Could not prepare handle %p\n", handle); |
1d14ffa9 FB |
624 | goto err; |
625 | } | |
626 | ||
1d14ffa9 FB |
627 | if (!in && conf.threshold) { |
628 | snd_pcm_uframes_t threshold; | |
629 | int bytes_per_sec; | |
630 | ||
ca9cc28c AZ |
631 | bytes_per_sec = freq << (nchannels == 2); |
632 | ||
633 | switch (obt->fmt) { | |
634 | case AUD_FMT_S8: | |
635 | case AUD_FMT_U8: | |
636 | break; | |
637 | ||
638 | case AUD_FMT_S16: | |
639 | case AUD_FMT_U16: | |
640 | bytes_per_sec <<= 1; | |
641 | break; | |
642 | ||
643 | case AUD_FMT_S32: | |
644 | case AUD_FMT_U32: | |
645 | bytes_per_sec <<= 2; | |
646 | break; | |
647 | } | |
1d14ffa9 FB |
648 | |
649 | threshold = (conf.threshold * bytes_per_sec) / 1000; | |
650 | alsa_set_threshold (handle, threshold); | |
651 | } | |
652 | ||
1d14ffa9 FB |
653 | obt->nchannels = nchannels; |
654 | obt->freq = freq; | |
c0fe3827 | 655 | obt->samples = obt_buffer_size; |
ca9cc28c | 656 | |
1d14ffa9 FB |
657 | *handlep = handle; |
658 | ||
ca9cc28c AZ |
659 | if (conf.verbose && |
660 | (obt->fmt != req->fmt || | |
661 | obt->nchannels != req->nchannels || | |
662 | obt->freq != req->freq)) { | |
663 | dolog ("Audio paramters for %s\n", typ); | |
1d14ffa9 | 664 | alsa_dump_info (req, obt); |
1d14ffa9 FB |
665 | } |
666 | ||
667 | #ifdef DEBUG | |
668 | alsa_dump_info (req, obt); | |
669 | #endif | |
670 | return 0; | |
671 | ||
672 | err: | |
6ebfda13 | 673 | alsa_anal_close1 (&handle); |
1d14ffa9 FB |
674 | return -1; |
675 | } | |
676 | ||
571ec3d6 FB |
677 | static snd_pcm_sframes_t alsa_get_avail (snd_pcm_t *handle) |
678 | { | |
679 | snd_pcm_sframes_t avail; | |
680 | ||
681 | avail = snd_pcm_avail_update (handle); | |
682 | if (avail < 0) { | |
683 | if (avail == -EPIPE) { | |
684 | if (!alsa_recover (handle)) { | |
685 | avail = snd_pcm_avail_update (handle); | |
686 | } | |
687 | } | |
688 | ||
689 | if (avail < 0) { | |
690 | alsa_logerr (avail, | |
691 | "Could not obtain number of available frames\n"); | |
692 | return -1; | |
693 | } | |
694 | } | |
695 | ||
696 | return avail; | |
697 | } | |
698 | ||
1d14ffa9 FB |
699 | static int alsa_run_out (HWVoiceOut *hw) |
700 | { | |
701 | ALSAVoiceOut *alsa = (ALSAVoiceOut *) hw; | |
702 | int rpos, live, decr; | |
703 | int samples; | |
704 | uint8_t *dst; | |
1ea879e5 | 705 | struct st_sample *src; |
1d14ffa9 FB |
706 | snd_pcm_sframes_t avail; |
707 | ||
708 | live = audio_pcm_hw_get_live_out (hw); | |
709 | if (!live) { | |
710 | return 0; | |
711 | } | |
712 | ||
571ec3d6 | 713 | avail = alsa_get_avail (alsa->handle); |
1d14ffa9 | 714 | if (avail < 0) { |
571ec3d6 | 715 | dolog ("Could not get number of available playback frames\n"); |
1d14ffa9 FB |
716 | return 0; |
717 | } | |
718 | ||
1d14ffa9 FB |
719 | decr = audio_MIN (live, avail); |
720 | samples = decr; | |
721 | rpos = hw->rpos; | |
722 | while (samples) { | |
723 | int left_till_end_samples = hw->samples - rpos; | |
571ec3d6 | 724 | int len = audio_MIN (samples, left_till_end_samples); |
1d14ffa9 FB |
725 | snd_pcm_sframes_t written; |
726 | ||
727 | src = hw->mix_buf + rpos; | |
728 | dst = advance (alsa->pcm_buf, rpos << hw->info.shift); | |
729 | ||
571ec3d6 | 730 | hw->clip (dst, src, len); |
1d14ffa9 | 731 | |
571ec3d6 FB |
732 | while (len) { |
733 | written = snd_pcm_writei (alsa->handle, dst, len); | |
4787c71d | 734 | |
571ec3d6 | 735 | if (written <= 0) { |
4787c71d | 736 | switch (written) { |
571ec3d6 FB |
737 | case 0: |
738 | if (conf.verbose) { | |
739 | dolog ("Failed to write %d frames (wrote zero)\n", len); | |
4787c71d | 740 | } |
4787c71d FB |
741 | goto exit; |
742 | ||
571ec3d6 FB |
743 | case -EPIPE: |
744 | if (alsa_recover (alsa->handle)) { | |
745 | alsa_logerr (written, "Failed to write %d frames\n", | |
746 | len); | |
747 | goto exit; | |
748 | } | |
749 | if (conf.verbose) { | |
750 | dolog ("Recovering from playback xrun\n"); | |
751 | } | |
4787c71d FB |
752 | continue; |
753 | ||
86635821 BM |
754 | case -ESTRPIPE: |
755 | /* stream is suspended and waiting for an | |
756 | application recovery */ | |
757 | if (alsa_resume (alsa->handle)) { | |
758 | alsa_logerr (written, "Failed to write %d frames\n", | |
759 | len); | |
760 | goto exit; | |
761 | } | |
762 | if (conf.verbose) { | |
763 | dolog ("Resuming suspended output stream\n"); | |
764 | } | |
765 | continue; | |
766 | ||
571ec3d6 FB |
767 | case -EAGAIN: |
768 | goto exit; | |
769 | ||
4787c71d FB |
770 | default: |
771 | alsa_logerr (written, "Failed to write %d frames to %p\n", | |
571ec3d6 | 772 | len, dst); |
4787c71d | 773 | goto exit; |
1d14ffa9 | 774 | } |
1d14ffa9 | 775 | } |
1d14ffa9 | 776 | |
4787c71d FB |
777 | rpos = (rpos + written) % hw->samples; |
778 | samples -= written; | |
571ec3d6 | 779 | len -= written; |
4787c71d FB |
780 | dst = advance (dst, written << hw->info.shift); |
781 | src += written; | |
782 | } | |
1d14ffa9 FB |
783 | } |
784 | ||
785 | exit: | |
786 | hw->rpos = rpos; | |
787 | return decr; | |
788 | } | |
789 | ||
790 | static void alsa_fini_out (HWVoiceOut *hw) | |
791 | { | |
792 | ALSAVoiceOut *alsa = (ALSAVoiceOut *) hw; | |
793 | ||
794 | ldebug ("alsa_fini\n"); | |
6ebfda13 | 795 | alsa_anal_close (&alsa->handle, &alsa->pollhlp); |
1d14ffa9 FB |
796 | |
797 | if (alsa->pcm_buf) { | |
798 | qemu_free (alsa->pcm_buf); | |
799 | alsa->pcm_buf = NULL; | |
800 | } | |
801 | } | |
802 | ||
1ea879e5 | 803 | static int alsa_init_out (HWVoiceOut *hw, struct audsettings *as) |
1d14ffa9 FB |
804 | { |
805 | ALSAVoiceOut *alsa = (ALSAVoiceOut *) hw; | |
806 | struct alsa_params_req req; | |
807 | struct alsa_params_obt obt; | |
1d14ffa9 | 808 | snd_pcm_t *handle; |
1ea879e5 | 809 | struct audsettings obt_as; |
1d14ffa9 | 810 | |
c0fe3827 FB |
811 | req.fmt = aud_to_alsafmt (as->fmt); |
812 | req.freq = as->freq; | |
813 | req.nchannels = as->nchannels; | |
1d14ffa9 FB |
814 | req.period_size = conf.period_size_out; |
815 | req.buffer_size = conf.buffer_size_out; | |
23fb600b | 816 | req.size_in_usec = conf.size_in_usec_out; |
97f155dd GH |
817 | req.override_mask = |
818 | (conf.period_size_out_overridden ? 1 : 0) | | |
819 | (conf.buffer_size_out_overridden ? 2 : 0); | |
1d14ffa9 FB |
820 | |
821 | if (alsa_open (0, &req, &obt, &handle)) { | |
822 | return -1; | |
823 | } | |
824 | ||
c0fe3827 FB |
825 | obt_as.freq = obt.freq; |
826 | obt_as.nchannels = obt.nchannels; | |
ca9cc28c AZ |
827 | obt_as.fmt = obt.fmt; |
828 | obt_as.endianness = obt.endianness; | |
c0fe3827 | 829 | |
d929eba5 | 830 | audio_pcm_init_info (&hw->info, &obt_as); |
c0fe3827 | 831 | hw->samples = obt.samples; |
1d14ffa9 | 832 | |
c0fe3827 | 833 | alsa->pcm_buf = audio_calloc (AUDIO_FUNC, obt.samples, 1 << hw->info.shift); |
1d14ffa9 | 834 | if (!alsa->pcm_buf) { |
4787c71d FB |
835 | dolog ("Could not allocate DAC buffer (%d samples, each %d bytes)\n", |
836 | hw->samples, 1 << hw->info.shift); | |
6ebfda13 | 837 | alsa_anal_close1 (&handle); |
1d14ffa9 FB |
838 | return -1; |
839 | } | |
840 | ||
841 | alsa->handle = handle; | |
1d14ffa9 FB |
842 | return 0; |
843 | } | |
844 | ||
571ec3d6 | 845 | static int alsa_voice_ctl (snd_pcm_t *handle, const char *typ, int pause) |
1d14ffa9 FB |
846 | { |
847 | int err; | |
571ec3d6 FB |
848 | |
849 | if (pause) { | |
850 | err = snd_pcm_drop (handle); | |
851 | if (err < 0) { | |
32d448c4 | 852 | alsa_logerr (err, "Could not stop %s\n", typ); |
571ec3d6 FB |
853 | return -1; |
854 | } | |
855 | } | |
856 | else { | |
857 | err = snd_pcm_prepare (handle); | |
858 | if (err < 0) { | |
32d448c4 | 859 | alsa_logerr (err, "Could not prepare handle for %s\n", typ); |
571ec3d6 FB |
860 | return -1; |
861 | } | |
862 | } | |
863 | ||
864 | return 0; | |
865 | } | |
866 | ||
867 | static int alsa_ctl_out (HWVoiceOut *hw, int cmd, ...) | |
868 | { | |
8b438ba3 | 869 | va_list ap; |
870 | int poll_mode; | |
1d14ffa9 FB |
871 | ALSAVoiceOut *alsa = (ALSAVoiceOut *) hw; |
872 | ||
8b438ba3 | 873 | va_start (ap, cmd); |
874 | poll_mode = va_arg (ap, int); | |
875 | va_end (ap); | |
876 | ||
1d14ffa9 FB |
877 | switch (cmd) { |
878 | case VOICE_ENABLE: | |
879 | ldebug ("enabling voice\n"); | |
8b438ba3 | 880 | if (poll_mode && alsa_poll_out (hw)) { |
881 | poll_mode = 0; | |
882 | } | |
883 | hw->poll_mode = poll_mode; | |
571ec3d6 | 884 | return alsa_voice_ctl (alsa->handle, "playback", 0); |
1d14ffa9 FB |
885 | |
886 | case VOICE_DISABLE: | |
887 | ldebug ("disabling voice\n"); | |
571ec3d6 | 888 | return alsa_voice_ctl (alsa->handle, "playback", 1); |
1d14ffa9 | 889 | } |
571ec3d6 FB |
890 | |
891 | return -1; | |
1d14ffa9 FB |
892 | } |
893 | ||
1ea879e5 | 894 | static int alsa_init_in (HWVoiceIn *hw, struct audsettings *as) |
1d14ffa9 FB |
895 | { |
896 | ALSAVoiceIn *alsa = (ALSAVoiceIn *) hw; | |
897 | struct alsa_params_req req; | |
898 | struct alsa_params_obt obt; | |
1d14ffa9 | 899 | snd_pcm_t *handle; |
1ea879e5 | 900 | struct audsettings obt_as; |
1d14ffa9 | 901 | |
c0fe3827 FB |
902 | req.fmt = aud_to_alsafmt (as->fmt); |
903 | req.freq = as->freq; | |
904 | req.nchannels = as->nchannels; | |
1d14ffa9 FB |
905 | req.period_size = conf.period_size_in; |
906 | req.buffer_size = conf.buffer_size_in; | |
7a24c800 | 907 | req.size_in_usec = conf.size_in_usec_in; |
97f155dd GH |
908 | req.override_mask = |
909 | (conf.period_size_in_overridden ? 1 : 0) | | |
910 | (conf.buffer_size_in_overridden ? 2 : 0); | |
1d14ffa9 FB |
911 | |
912 | if (alsa_open (1, &req, &obt, &handle)) { | |
913 | return -1; | |
914 | } | |
915 | ||
c0fe3827 FB |
916 | obt_as.freq = obt.freq; |
917 | obt_as.nchannels = obt.nchannels; | |
ca9cc28c AZ |
918 | obt_as.fmt = obt.fmt; |
919 | obt_as.endianness = obt.endianness; | |
c0fe3827 | 920 | |
d929eba5 | 921 | audio_pcm_init_info (&hw->info, &obt_as); |
c0fe3827 FB |
922 | hw->samples = obt.samples; |
923 | ||
924 | alsa->pcm_buf = audio_calloc (AUDIO_FUNC, hw->samples, 1 << hw->info.shift); | |
1d14ffa9 | 925 | if (!alsa->pcm_buf) { |
4787c71d FB |
926 | dolog ("Could not allocate ADC buffer (%d samples, each %d bytes)\n", |
927 | hw->samples, 1 << hw->info.shift); | |
6ebfda13 | 928 | alsa_anal_close1 (&handle); |
1d14ffa9 FB |
929 | return -1; |
930 | } | |
931 | ||
932 | alsa->handle = handle; | |
933 | return 0; | |
934 | } | |
935 | ||
936 | static void alsa_fini_in (HWVoiceIn *hw) | |
937 | { | |
938 | ALSAVoiceIn *alsa = (ALSAVoiceIn *) hw; | |
939 | ||
6ebfda13 | 940 | alsa_anal_close (&alsa->handle, &alsa->pollhlp); |
1d14ffa9 FB |
941 | |
942 | if (alsa->pcm_buf) { | |
943 | qemu_free (alsa->pcm_buf); | |
944 | alsa->pcm_buf = NULL; | |
945 | } | |
946 | } | |
947 | ||
948 | static int alsa_run_in (HWVoiceIn *hw) | |
949 | { | |
950 | ALSAVoiceIn *alsa = (ALSAVoiceIn *) hw; | |
951 | int hwshift = hw->info.shift; | |
952 | int i; | |
953 | int live = audio_pcm_hw_get_live_in (hw); | |
954 | int dead = hw->samples - live; | |
571ec3d6 | 955 | int decr; |
1d14ffa9 FB |
956 | struct { |
957 | int add; | |
958 | int len; | |
959 | } bufs[2] = { | |
98f9f48c | 960 | { .add = hw->wpos, .len = 0 }, |
961 | { .add = 0, .len = 0 } | |
1d14ffa9 | 962 | }; |
571ec3d6 | 963 | snd_pcm_sframes_t avail; |
1d14ffa9 FB |
964 | snd_pcm_uframes_t read_samples = 0; |
965 | ||
966 | if (!dead) { | |
967 | return 0; | |
968 | } | |
969 | ||
571ec3d6 FB |
970 | avail = alsa_get_avail (alsa->handle); |
971 | if (avail < 0) { | |
972 | dolog ("Could not get number of captured frames\n"); | |
973 | return 0; | |
974 | } | |
975 | ||
86635821 BM |
976 | if (!avail) { |
977 | snd_pcm_state_t state; | |
978 | ||
979 | state = snd_pcm_state (alsa->handle); | |
980 | switch (state) { | |
981 | case SND_PCM_STATE_PREPARED: | |
982 | avail = hw->samples; | |
983 | break; | |
984 | case SND_PCM_STATE_SUSPENDED: | |
985 | /* stream is suspended and waiting for an application recovery */ | |
986 | if (alsa_resume (alsa->handle)) { | |
987 | dolog ("Failed to resume suspended input stream\n"); | |
988 | return 0; | |
989 | } | |
990 | if (conf.verbose) { | |
991 | dolog ("Resuming suspended input stream\n"); | |
992 | } | |
993 | break; | |
994 | default: | |
995 | if (conf.verbose) { | |
996 | dolog ("No frames available and ALSA state is %d\n", state); | |
997 | } | |
998 | return 0; | |
999 | } | |
571ec3d6 FB |
1000 | } |
1001 | ||
1002 | decr = audio_MIN (dead, avail); | |
1003 | if (!decr) { | |
1004 | return 0; | |
1005 | } | |
1006 | ||
1007 | if (hw->wpos + decr > hw->samples) { | |
1d14ffa9 | 1008 | bufs[0].len = (hw->samples - hw->wpos); |
571ec3d6 | 1009 | bufs[1].len = (decr - (hw->samples - hw->wpos)); |
1d14ffa9 FB |
1010 | } |
1011 | else { | |
571ec3d6 | 1012 | bufs[0].len = decr; |
1d14ffa9 FB |
1013 | } |
1014 | ||
1d14ffa9 FB |
1015 | for (i = 0; i < 2; ++i) { |
1016 | void *src; | |
1ea879e5 | 1017 | struct st_sample *dst; |
1d14ffa9 FB |
1018 | snd_pcm_sframes_t nread; |
1019 | snd_pcm_uframes_t len; | |
1020 | ||
1021 | len = bufs[i].len; | |
1022 | ||
1023 | src = advance (alsa->pcm_buf, bufs[i].add << hwshift); | |
1024 | dst = hw->conv_buf + bufs[i].add; | |
1025 | ||
1026 | while (len) { | |
1027 | nread = snd_pcm_readi (alsa->handle, src, len); | |
1028 | ||
571ec3d6 | 1029 | if (nread <= 0) { |
1d14ffa9 | 1030 | switch (nread) { |
571ec3d6 FB |
1031 | case 0: |
1032 | if (conf.verbose) { | |
1033 | dolog ("Failed to read %ld frames (read zero)\n", len); | |
1d14ffa9 | 1034 | } |
1d14ffa9 FB |
1035 | goto exit; |
1036 | ||
571ec3d6 FB |
1037 | case -EPIPE: |
1038 | if (alsa_recover (alsa->handle)) { | |
1039 | alsa_logerr (nread, "Failed to read %ld frames\n", len); | |
1040 | goto exit; | |
1041 | } | |
1042 | if (conf.verbose) { | |
1043 | dolog ("Recovering from capture xrun\n"); | |
1044 | } | |
1d14ffa9 FB |
1045 | continue; |
1046 | ||
571ec3d6 FB |
1047 | case -EAGAIN: |
1048 | goto exit; | |
1049 | ||
1d14ffa9 FB |
1050 | default: |
1051 | alsa_logerr ( | |
1052 | nread, | |
1053 | "Failed to read %ld frames from %p\n", | |
1054 | len, | |
1055 | src | |
1056 | ); | |
1057 | goto exit; | |
1058 | } | |
1059 | } | |
1060 | ||
1061 | hw->conv (dst, src, nread, &nominal_volume); | |
1062 | ||
1063 | src = advance (src, nread << hwshift); | |
1064 | dst += nread; | |
1065 | ||
1066 | read_samples += nread; | |
1067 | len -= nread; | |
1068 | } | |
1069 | } | |
1070 | ||
1071 | exit: | |
1072 | hw->wpos = (hw->wpos + read_samples) % hw->samples; | |
1073 | return read_samples; | |
1074 | } | |
1075 | ||
1076 | static int alsa_read (SWVoiceIn *sw, void *buf, int size) | |
1077 | { | |
1078 | return audio_pcm_sw_read (sw, buf, size); | |
1079 | } | |
1080 | ||
1081 | static int alsa_ctl_in (HWVoiceIn *hw, int cmd, ...) | |
1082 | { | |
8b438ba3 | 1083 | va_list ap; |
1084 | int poll_mode; | |
571ec3d6 FB |
1085 | ALSAVoiceIn *alsa = (ALSAVoiceIn *) hw; |
1086 | ||
8b438ba3 | 1087 | va_start (ap, cmd); |
1088 | poll_mode = va_arg (ap, int); | |
1089 | va_end (ap); | |
1090 | ||
571ec3d6 FB |
1091 | switch (cmd) { |
1092 | case VOICE_ENABLE: | |
1093 | ldebug ("enabling voice\n"); | |
8b438ba3 | 1094 | if (poll_mode && alsa_poll_in (hw)) { |
1095 | poll_mode = 0; | |
1096 | } | |
1097 | hw->poll_mode = poll_mode; | |
1098 | ||
571ec3d6 FB |
1099 | return alsa_voice_ctl (alsa->handle, "capture", 0); |
1100 | ||
1101 | case VOICE_DISABLE: | |
1102 | ldebug ("disabling voice\n"); | |
8b438ba3 | 1103 | if (hw->poll_mode) { |
1104 | hw->poll_mode = 0; | |
1105 | alsa_fini_poll (&alsa->pollhlp); | |
1106 | } | |
571ec3d6 FB |
1107 | return alsa_voice_ctl (alsa->handle, "capture", 1); |
1108 | } | |
1109 | ||
1110 | return -1; | |
1d14ffa9 FB |
1111 | } |
1112 | ||
1113 | static void *alsa_audio_init (void) | |
1114 | { | |
1115 | return &conf; | |
1116 | } | |
1117 | ||
1118 | static void alsa_audio_fini (void *opaque) | |
1119 | { | |
1120 | (void) opaque; | |
1121 | } | |
1122 | ||
1123 | static struct audio_option alsa_options[] = { | |
98f9f48c | 1124 | { |
1125 | .name = "DAC_SIZE_IN_USEC", | |
1126 | .tag = AUD_OPT_BOOL, | |
1127 | .valp = &conf.size_in_usec_out, | |
1128 | .descr = "DAC period/buffer size in microseconds (otherwise in frames)" | |
1129 | }, | |
1130 | { | |
1131 | .name = "DAC_PERIOD_SIZE", | |
1132 | .tag = AUD_OPT_INT, | |
1133 | .valp = &conf.period_size_out, | |
1134 | .descr = "DAC period size (0 to go with system default)", | |
1135 | .overriddenp = &conf.period_size_out_overridden | |
1136 | }, | |
1137 | { | |
1138 | .name = "DAC_BUFFER_SIZE", | |
1139 | .tag = AUD_OPT_INT, | |
1140 | .valp = &conf.buffer_size_out, | |
1141 | .descr = "DAC buffer size (0 to go with system default)", | |
1142 | .overriddenp = &conf.buffer_size_out_overridden | |
1143 | }, | |
1144 | { | |
1145 | .name = "ADC_SIZE_IN_USEC", | |
1146 | .tag = AUD_OPT_BOOL, | |
1147 | .valp = &conf.size_in_usec_in, | |
1148 | .descr = | |
1149 | "ADC period/buffer size in microseconds (otherwise in frames)" | |
1150 | }, | |
1151 | { | |
1152 | .name = "ADC_PERIOD_SIZE", | |
1153 | .tag = AUD_OPT_INT, | |
1154 | .valp = &conf.period_size_in, | |
1155 | .descr = "ADC period size (0 to go with system default)", | |
1156 | .overriddenp = &conf.period_size_in_overridden | |
1157 | }, | |
1158 | { | |
1159 | .name = "ADC_BUFFER_SIZE", | |
1160 | .tag = AUD_OPT_INT, | |
1161 | .valp = &conf.buffer_size_in, | |
1162 | .descr = "ADC buffer size (0 to go with system default)", | |
1163 | .overriddenp = &conf.buffer_size_in_overridden | |
1164 | }, | |
1165 | { | |
1166 | .name = "THRESHOLD", | |
1167 | .tag = AUD_OPT_INT, | |
1168 | .valp = &conf.threshold, | |
1169 | .descr = "(undocumented)" | |
1170 | }, | |
1171 | { | |
1172 | .name = "DAC_DEV", | |
1173 | .tag = AUD_OPT_STR, | |
1174 | .valp = &conf.pcm_name_out, | |
1175 | .descr = "DAC device name (for instance dmix)" | |
1176 | }, | |
1177 | { | |
1178 | .name = "ADC_DEV", | |
1179 | .tag = AUD_OPT_STR, | |
1180 | .valp = &conf.pcm_name_in, | |
1181 | .descr = "ADC device name" | |
1182 | }, | |
1183 | { | |
1184 | .name = "VERBOSE", | |
1185 | .tag = AUD_OPT_BOOL, | |
1186 | .valp = &conf.verbose, | |
1187 | .descr = "Behave in a more verbose way" | |
1188 | }, | |
2700efa3 | 1189 | { /* End of list */ } |
1d14ffa9 FB |
1190 | }; |
1191 | ||
35f4b58c | 1192 | static struct audio_pcm_ops alsa_pcm_ops = { |
1dd3e4d1 JQ |
1193 | .init_out = alsa_init_out, |
1194 | .fini_out = alsa_fini_out, | |
1195 | .run_out = alsa_run_out, | |
1196 | .write = alsa_write, | |
1197 | .ctl_out = alsa_ctl_out, | |
1198 | ||
1199 | .init_in = alsa_init_in, | |
1200 | .fini_in = alsa_fini_in, | |
1201 | .run_in = alsa_run_in, | |
1202 | .read = alsa_read, | |
8b438ba3 | 1203 | .ctl_in = alsa_ctl_in, |
1d14ffa9 FB |
1204 | }; |
1205 | ||
1206 | struct audio_driver alsa_audio_driver = { | |
bee37f32 JQ |
1207 | .name = "alsa", |
1208 | .descr = "ALSA http://www.alsa-project.org", | |
1209 | .options = alsa_options, | |
1210 | .init = alsa_audio_init, | |
1211 | .fini = alsa_audio_fini, | |
1212 | .pcm_ops = &alsa_pcm_ops, | |
1213 | .can_be_default = 1, | |
1214 | .max_voices_out = INT_MAX, | |
1215 | .max_voices_in = INT_MAX, | |
1216 | .voice_size_out = sizeof (ALSAVoiceOut), | |
1217 | .voice_size_in = sizeof (ALSAVoiceIn) | |
1d14ffa9 | 1218 | }; |