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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" |
1de7afc9 | 26 | #include "qemu/main-loop.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 | } | |
7267c094 | 139 | g_free (pfds); |
6ebfda13 | 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) { | |
d9812b03 | 216 | case SND_PCM_STATE_SETUP: |
217 | alsa_recover (hlp->handle); | |
218 | break; | |
219 | ||
8b438ba3 | 220 | case SND_PCM_STATE_XRUN: |
221 | alsa_recover (hlp->handle); | |
222 | break; | |
223 | ||
224 | case SND_PCM_STATE_SUSPENDED: | |
225 | alsa_resume (hlp->handle); | |
226 | break; | |
227 | ||
228 | case SND_PCM_STATE_PREPARED: | |
229 | audio_run ("alsa run (prepared)"); | |
230 | break; | |
231 | ||
232 | case SND_PCM_STATE_RUNNING: | |
233 | audio_run ("alsa run (running)"); | |
234 | break; | |
235 | ||
236 | default: | |
237 | dolog ("Unexpected state %d\n", state); | |
238 | } | |
239 | } | |
240 | ||
b4f763b8 | 241 | static int alsa_poll_helper (snd_pcm_t *handle, struct pollhlp *hlp, int mask) |
8b438ba3 | 242 | { |
243 | int i, count, err; | |
244 | struct pollfd *pfds; | |
245 | ||
246 | count = snd_pcm_poll_descriptors_count (handle); | |
247 | if (count <= 0) { | |
248 | dolog ("Could not initialize poll mode\n" | |
249 | "Invalid number of poll descriptors %d\n", count); | |
250 | return -1; | |
251 | } | |
252 | ||
253 | pfds = audio_calloc ("alsa_poll_helper", count, sizeof (*pfds)); | |
254 | if (!pfds) { | |
255 | dolog ("Could not initialize poll mode\n"); | |
256 | return -1; | |
257 | } | |
258 | ||
259 | err = snd_pcm_poll_descriptors (handle, pfds, count); | |
260 | if (err < 0) { | |
261 | alsa_logerr (err, "Could not initialize poll mode\n" | |
262 | "Could not obtain poll descriptors\n"); | |
7267c094 | 263 | g_free (pfds); |
8b438ba3 | 264 | return -1; |
265 | } | |
266 | ||
267 | for (i = 0; i < count; ++i) { | |
268 | if (pfds[i].events & POLLIN) { | |
be93f216 | 269 | qemu_set_fd_handler (pfds[i].fd, alsa_poll_handler, NULL, hlp); |
8b438ba3 | 270 | } |
271 | if (pfds[i].events & POLLOUT) { | |
272 | if (conf.verbose) { | |
273 | dolog ("POLLOUT %d %d\n", i, pfds[i].fd); | |
274 | } | |
be93f216 | 275 | qemu_set_fd_handler (pfds[i].fd, NULL, alsa_poll_handler, hlp); |
8b438ba3 | 276 | } |
277 | if (conf.verbose) { | |
278 | dolog ("Set handler events=%#x index=%d fd=%d err=%d\n", | |
279 | pfds[i].events, i, pfds[i].fd, err); | |
280 | } | |
281 | ||
8b438ba3 | 282 | } |
283 | hlp->pfds = pfds; | |
284 | hlp->count = count; | |
285 | hlp->handle = handle; | |
b4f763b8 | 286 | hlp->mask = mask; |
8b438ba3 | 287 | return 0; |
288 | } | |
289 | ||
290 | static int alsa_poll_out (HWVoiceOut *hw) | |
291 | { | |
292 | ALSAVoiceOut *alsa = (ALSAVoiceOut *) hw; | |
293 | ||
b4f763b8 | 294 | return alsa_poll_helper (alsa->handle, &alsa->pollhlp, POLLOUT); |
8b438ba3 | 295 | } |
296 | ||
297 | static int alsa_poll_in (HWVoiceIn *hw) | |
298 | { | |
299 | ALSAVoiceIn *alsa = (ALSAVoiceIn *) hw; | |
300 | ||
b4f763b8 | 301 | return alsa_poll_helper (alsa->handle, &alsa->pollhlp, POLLIN); |
8b438ba3 | 302 | } |
303 | ||
1d14ffa9 FB |
304 | static int alsa_write (SWVoiceOut *sw, void *buf, int len) |
305 | { | |
306 | return audio_pcm_sw_write (sw, buf, len); | |
307 | } | |
308 | ||
d66bddd7 | 309 | static snd_pcm_format_t aud_to_alsafmt (audfmt_e fmt, int endianness) |
1d14ffa9 FB |
310 | { |
311 | switch (fmt) { | |
312 | case AUD_FMT_S8: | |
313 | return SND_PCM_FORMAT_S8; | |
314 | ||
315 | case AUD_FMT_U8: | |
316 | return SND_PCM_FORMAT_U8; | |
317 | ||
318 | case AUD_FMT_S16: | |
d66bddd7 MW |
319 | if (endianness) { |
320 | return SND_PCM_FORMAT_S16_BE; | |
321 | } | |
322 | else { | |
323 | return SND_PCM_FORMAT_S16_LE; | |
324 | } | |
1d14ffa9 FB |
325 | |
326 | case AUD_FMT_U16: | |
d66bddd7 MW |
327 | if (endianness) { |
328 | return SND_PCM_FORMAT_U16_BE; | |
329 | } | |
330 | else { | |
331 | return SND_PCM_FORMAT_U16_LE; | |
332 | } | |
1d14ffa9 | 333 | |
f941aa25 | 334 | case AUD_FMT_S32: |
d66bddd7 MW |
335 | if (endianness) { |
336 | return SND_PCM_FORMAT_S32_BE; | |
337 | } | |
338 | else { | |
339 | return SND_PCM_FORMAT_S32_LE; | |
340 | } | |
f941aa25 TS |
341 | |
342 | case AUD_FMT_U32: | |
d66bddd7 MW |
343 | if (endianness) { |
344 | return SND_PCM_FORMAT_U32_BE; | |
345 | } | |
346 | else { | |
347 | return SND_PCM_FORMAT_U32_LE; | |
348 | } | |
f941aa25 | 349 | |
1d14ffa9 FB |
350 | default: |
351 | dolog ("Internal logic error: Bad audio format %d\n", fmt); | |
352 | #ifdef DEBUG_AUDIO | |
353 | abort (); | |
354 | #endif | |
355 | return SND_PCM_FORMAT_U8; | |
356 | } | |
357 | } | |
358 | ||
ca9cc28c AZ |
359 | static int alsa_to_audfmt (snd_pcm_format_t alsafmt, audfmt_e *fmt, |
360 | int *endianness) | |
1d14ffa9 FB |
361 | { |
362 | switch (alsafmt) { | |
363 | case SND_PCM_FORMAT_S8: | |
364 | *endianness = 0; | |
365 | *fmt = AUD_FMT_S8; | |
366 | break; | |
367 | ||
368 | case SND_PCM_FORMAT_U8: | |
369 | *endianness = 0; | |
370 | *fmt = AUD_FMT_U8; | |
371 | break; | |
372 | ||
373 | case SND_PCM_FORMAT_S16_LE: | |
374 | *endianness = 0; | |
375 | *fmt = AUD_FMT_S16; | |
376 | break; | |
377 | ||
378 | case SND_PCM_FORMAT_U16_LE: | |
379 | *endianness = 0; | |
380 | *fmt = AUD_FMT_U16; | |
381 | break; | |
382 | ||
383 | case SND_PCM_FORMAT_S16_BE: | |
384 | *endianness = 1; | |
385 | *fmt = AUD_FMT_S16; | |
386 | break; | |
387 | ||
388 | case SND_PCM_FORMAT_U16_BE: | |
389 | *endianness = 1; | |
390 | *fmt = AUD_FMT_U16; | |
391 | break; | |
392 | ||
f941aa25 TS |
393 | case SND_PCM_FORMAT_S32_LE: |
394 | *endianness = 0; | |
395 | *fmt = AUD_FMT_S32; | |
396 | break; | |
397 | ||
398 | case SND_PCM_FORMAT_U32_LE: | |
399 | *endianness = 0; | |
400 | *fmt = AUD_FMT_U32; | |
401 | break; | |
402 | ||
403 | case SND_PCM_FORMAT_S32_BE: | |
404 | *endianness = 1; | |
405 | *fmt = AUD_FMT_S32; | |
406 | break; | |
407 | ||
408 | case SND_PCM_FORMAT_U32_BE: | |
409 | *endianness = 1; | |
410 | *fmt = AUD_FMT_U32; | |
411 | break; | |
412 | ||
1d14ffa9 FB |
413 | default: |
414 | dolog ("Unrecognized audio format %d\n", alsafmt); | |
415 | return -1; | |
416 | } | |
417 | ||
418 | return 0; | |
419 | } | |
420 | ||
1d14ffa9 | 421 | static void alsa_dump_info (struct alsa_params_req *req, |
8bb414d2 | 422 | struct alsa_params_obt *obt, |
423 | snd_pcm_format_t obtfmt) | |
1d14ffa9 FB |
424 | { |
425 | dolog ("parameter | requested value | obtained value\n"); | |
8bb414d2 | 426 | dolog ("format | %10d | %10d\n", req->fmt, obtfmt); |
1d14ffa9 FB |
427 | dolog ("channels | %10d | %10d\n", |
428 | req->nchannels, obt->nchannels); | |
429 | dolog ("frequency | %10d | %10d\n", req->freq, obt->freq); | |
430 | dolog ("============================================\n"); | |
431 | dolog ("requested: buffer size %d period size %d\n", | |
432 | req->buffer_size, req->period_size); | |
c0fe3827 | 433 | dolog ("obtained: samples %ld\n", obt->samples); |
1d14ffa9 | 434 | } |
1d14ffa9 FB |
435 | |
436 | static void alsa_set_threshold (snd_pcm_t *handle, snd_pcm_uframes_t threshold) | |
437 | { | |
438 | int err; | |
439 | snd_pcm_sw_params_t *sw_params; | |
440 | ||
441 | snd_pcm_sw_params_alloca (&sw_params); | |
442 | ||
443 | err = snd_pcm_sw_params_current (handle, sw_params); | |
444 | if (err < 0) { | |
c0fe3827 | 445 | dolog ("Could not fully initialize DAC\n"); |
1d14ffa9 FB |
446 | alsa_logerr (err, "Failed to get current software parameters\n"); |
447 | return; | |
448 | } | |
449 | ||
450 | err = snd_pcm_sw_params_set_start_threshold (handle, sw_params, threshold); | |
451 | if (err < 0) { | |
c0fe3827 | 452 | dolog ("Could not fully initialize DAC\n"); |
1d14ffa9 FB |
453 | alsa_logerr (err, "Failed to set software threshold to %ld\n", |
454 | threshold); | |
455 | return; | |
456 | } | |
457 | ||
458 | err = snd_pcm_sw_params (handle, sw_params); | |
459 | if (err < 0) { | |
c0fe3827 | 460 | dolog ("Could not fully initialize DAC\n"); |
1d14ffa9 FB |
461 | alsa_logerr (err, "Failed to set software parameters\n"); |
462 | return; | |
463 | } | |
464 | } | |
465 | ||
466 | static int alsa_open (int in, struct alsa_params_req *req, | |
467 | struct alsa_params_obt *obt, snd_pcm_t **handlep) | |
468 | { | |
469 | snd_pcm_t *handle; | |
470 | snd_pcm_hw_params_t *hw_params; | |
60fe76f3 | 471 | int err; |
7a24c800 | 472 | int size_in_usec; |
60fe76f3 | 473 | unsigned int freq, nchannels; |
1d14ffa9 | 474 | const char *pcm_name = in ? conf.pcm_name_in : conf.pcm_name_out; |
1d14ffa9 FB |
475 | snd_pcm_uframes_t obt_buffer_size; |
476 | const char *typ = in ? "ADC" : "DAC"; | |
ca9cc28c | 477 | snd_pcm_format_t obtfmt; |
1d14ffa9 FB |
478 | |
479 | freq = req->freq; | |
1d14ffa9 | 480 | nchannels = req->nchannels; |
7a24c800 | 481 | size_in_usec = req->size_in_usec; |
1d14ffa9 FB |
482 | |
483 | snd_pcm_hw_params_alloca (&hw_params); | |
484 | ||
485 | err = snd_pcm_open ( | |
486 | &handle, | |
487 | pcm_name, | |
488 | in ? SND_PCM_STREAM_CAPTURE : SND_PCM_STREAM_PLAYBACK, | |
489 | SND_PCM_NONBLOCK | |
490 | ); | |
491 | if (err < 0) { | |
492 | alsa_logerr2 (err, typ, "Failed to open `%s':\n", pcm_name); | |
493 | return -1; | |
494 | } | |
495 | ||
496 | err = snd_pcm_hw_params_any (handle, hw_params); | |
497 | if (err < 0) { | |
498 | alsa_logerr2 (err, typ, "Failed to initialize hardware parameters\n"); | |
499 | goto err; | |
500 | } | |
501 | ||
502 | err = snd_pcm_hw_params_set_access ( | |
503 | handle, | |
504 | hw_params, | |
505 | SND_PCM_ACCESS_RW_INTERLEAVED | |
506 | ); | |
507 | if (err < 0) { | |
508 | alsa_logerr2 (err, typ, "Failed to set access type\n"); | |
509 | goto err; | |
510 | } | |
511 | ||
512 | err = snd_pcm_hw_params_set_format (handle, hw_params, req->fmt); | |
ca9cc28c | 513 | if (err < 0 && conf.verbose) { |
1d14ffa9 | 514 | alsa_logerr2 (err, typ, "Failed to set format %d\n", req->fmt); |
1d14ffa9 FB |
515 | } |
516 | ||
517 | err = snd_pcm_hw_params_set_rate_near (handle, hw_params, &freq, 0); | |
518 | if (err < 0) { | |
519 | alsa_logerr2 (err, typ, "Failed to set frequency %d\n", req->freq); | |
520 | goto err; | |
521 | } | |
522 | ||
523 | err = snd_pcm_hw_params_set_channels_near ( | |
524 | handle, | |
525 | hw_params, | |
526 | &nchannels | |
527 | ); | |
528 | if (err < 0) { | |
529 | alsa_logerr2 (err, typ, "Failed to set number of channels %d\n", | |
530 | req->nchannels); | |
531 | goto err; | |
532 | } | |
533 | ||
534 | if (nchannels != 1 && nchannels != 2) { | |
535 | alsa_logerr2 (err, typ, | |
536 | "Can not handle obtained number of channels %d\n", | |
537 | nchannels); | |
538 | goto err; | |
539 | } | |
540 | ||
7a24c800 | 541 | if (req->buffer_size) { |
f3b52983 | 542 | unsigned long obt; |
543 | ||
7a24c800 | 544 | if (size_in_usec) { |
545 | int dir = 0; | |
546 | unsigned int btime = req->buffer_size; | |
1d14ffa9 FB |
547 | |
548 | err = snd_pcm_hw_params_set_buffer_time_near ( | |
549 | handle, | |
550 | hw_params, | |
7a24c800 | 551 | &btime, |
552 | &dir | |
c0fe3827 | 553 | ); |
f3b52983 | 554 | obt = btime; |
1d14ffa9 FB |
555 | } |
556 | else { | |
7a24c800 | 557 | snd_pcm_uframes_t bsize = req->buffer_size; |
1d14ffa9 | 558 | |
7a24c800 | 559 | err = snd_pcm_hw_params_set_buffer_size_near ( |
560 | handle, | |
561 | hw_params, | |
562 | &bsize | |
563 | ); | |
f3b52983 | 564 | obt = bsize; |
7a24c800 | 565 | } |
566 | if (err < 0) { | |
567 | alsa_logerr2 (err, typ, "Failed to set buffer %s to %d\n", | |
568 | size_in_usec ? "time" : "size", req->buffer_size); | |
569 | goto err; | |
570 | } | |
f3b52983 | 571 | |
64333899 | 572 | if ((req->override_mask & 2) && (obt - req->buffer_size)) |
f3b52983 | 573 | dolog ("Requested buffer %s %u was rejected, using %lu\n", |
574 | size_in_usec ? "time" : "size", req->buffer_size, obt); | |
7a24c800 | 575 | } |
576 | ||
577 | if (req->period_size) { | |
f3b52983 | 578 | unsigned long obt; |
579 | ||
7a24c800 | 580 | if (size_in_usec) { |
581 | int dir = 0; | |
582 | unsigned int ptime = req->period_size; | |
1d14ffa9 | 583 | |
7a24c800 | 584 | err = snd_pcm_hw_params_set_period_time_near ( |
585 | handle, | |
1d14ffa9 | 586 | hw_params, |
7a24c800 | 587 | &ptime, |
588 | &dir | |
1d14ffa9 | 589 | ); |
f3b52983 | 590 | obt = ptime; |
7a24c800 | 591 | } |
592 | else { | |
a7bb29ba | 593 | int dir = 0; |
7a24c800 | 594 | snd_pcm_uframes_t psize = req->period_size; |
1d14ffa9 | 595 | |
a7bb29ba | 596 | err = snd_pcm_hw_params_set_period_size_near ( |
1d14ffa9 FB |
597 | handle, |
598 | hw_params, | |
a7bb29ba | 599 | &psize, |
600 | &dir | |
1d14ffa9 | 601 | ); |
f3b52983 | 602 | obt = psize; |
1d14ffa9 | 603 | } |
7a24c800 | 604 | |
605 | if (err < 0) { | |
606 | alsa_logerr2 (err, typ, "Failed to set period %s to %d\n", | |
607 | size_in_usec ? "time" : "size", req->period_size); | |
608 | goto err; | |
609 | } | |
f3b52983 | 610 | |
541ba4e7 | 611 | if (((req->override_mask & 1) && (obt - req->period_size))) |
f3b52983 | 612 | dolog ("Requested period %s %u was rejected, using %lu\n", |
613 | size_in_usec ? "time" : "size", req->period_size, obt); | |
1d14ffa9 FB |
614 | } |
615 | ||
616 | err = snd_pcm_hw_params (handle, hw_params); | |
617 | if (err < 0) { | |
618 | alsa_logerr2 (err, typ, "Failed to apply audio parameters\n"); | |
619 | goto err; | |
620 | } | |
621 | ||
622 | err = snd_pcm_hw_params_get_buffer_size (hw_params, &obt_buffer_size); | |
623 | if (err < 0) { | |
624 | alsa_logerr2 (err, typ, "Failed to get buffer size\n"); | |
625 | goto err; | |
626 | } | |
627 | ||
ca9cc28c AZ |
628 | err = snd_pcm_hw_params_get_format (hw_params, &obtfmt); |
629 | if (err < 0) { | |
630 | alsa_logerr2 (err, typ, "Failed to get format\n"); | |
631 | goto err; | |
632 | } | |
633 | ||
634 | if (alsa_to_audfmt (obtfmt, &obt->fmt, &obt->endianness)) { | |
635 | dolog ("Invalid format was returned %d\n", obtfmt); | |
636 | goto err; | |
637 | } | |
638 | ||
1d14ffa9 FB |
639 | err = snd_pcm_prepare (handle); |
640 | if (err < 0) { | |
c0fe3827 | 641 | alsa_logerr2 (err, typ, "Could not prepare handle %p\n", handle); |
1d14ffa9 FB |
642 | goto err; |
643 | } | |
644 | ||
1d14ffa9 FB |
645 | if (!in && conf.threshold) { |
646 | snd_pcm_uframes_t threshold; | |
647 | int bytes_per_sec; | |
648 | ||
ca9cc28c AZ |
649 | bytes_per_sec = freq << (nchannels == 2); |
650 | ||
651 | switch (obt->fmt) { | |
652 | case AUD_FMT_S8: | |
653 | case AUD_FMT_U8: | |
654 | break; | |
655 | ||
656 | case AUD_FMT_S16: | |
657 | case AUD_FMT_U16: | |
658 | bytes_per_sec <<= 1; | |
659 | break; | |
660 | ||
661 | case AUD_FMT_S32: | |
662 | case AUD_FMT_U32: | |
663 | bytes_per_sec <<= 2; | |
664 | break; | |
665 | } | |
1d14ffa9 FB |
666 | |
667 | threshold = (conf.threshold * bytes_per_sec) / 1000; | |
668 | alsa_set_threshold (handle, threshold); | |
669 | } | |
670 | ||
1d14ffa9 FB |
671 | obt->nchannels = nchannels; |
672 | obt->freq = freq; | |
c0fe3827 | 673 | obt->samples = obt_buffer_size; |
ca9cc28c | 674 | |
1d14ffa9 FB |
675 | *handlep = handle; |
676 | ||
ca9cc28c | 677 | if (conf.verbose && |
8bb414d2 | 678 | (obtfmt != req->fmt || |
ca9cc28c AZ |
679 | obt->nchannels != req->nchannels || |
680 | obt->freq != req->freq)) { | |
f093feb7 | 681 | dolog ("Audio parameters for %s\n", typ); |
8bb414d2 | 682 | alsa_dump_info (req, obt, obtfmt); |
1d14ffa9 FB |
683 | } |
684 | ||
685 | #ifdef DEBUG | |
8bb414d2 | 686 | alsa_dump_info (req, obt, obtfmt); |
1d14ffa9 FB |
687 | #endif |
688 | return 0; | |
689 | ||
690 | err: | |
6ebfda13 | 691 | alsa_anal_close1 (&handle); |
1d14ffa9 FB |
692 | return -1; |
693 | } | |
694 | ||
571ec3d6 FB |
695 | static snd_pcm_sframes_t alsa_get_avail (snd_pcm_t *handle) |
696 | { | |
697 | snd_pcm_sframes_t avail; | |
698 | ||
699 | avail = snd_pcm_avail_update (handle); | |
700 | if (avail < 0) { | |
701 | if (avail == -EPIPE) { | |
702 | if (!alsa_recover (handle)) { | |
703 | avail = snd_pcm_avail_update (handle); | |
704 | } | |
705 | } | |
706 | ||
707 | if (avail < 0) { | |
708 | alsa_logerr (avail, | |
709 | "Could not obtain number of available frames\n"); | |
710 | return -1; | |
711 | } | |
712 | } | |
713 | ||
714 | return avail; | |
715 | } | |
716 | ||
541ba4e7 | 717 | static void alsa_write_pending (ALSAVoiceOut *alsa) |
1d14ffa9 | 718 | { |
541ba4e7 | 719 | HWVoiceOut *hw = &alsa->hw; |
1d14ffa9 | 720 | |
541ba4e7 | 721 | while (alsa->pending) { |
722 | int left_till_end_samples = hw->samples - alsa->wpos; | |
723 | int len = audio_MIN (alsa->pending, left_till_end_samples); | |
724 | char *src = advance (alsa->pcm_buf, alsa->wpos << hw->info.shift); | |
1d14ffa9 | 725 | |
571ec3d6 | 726 | while (len) { |
541ba4e7 | 727 | snd_pcm_sframes_t written; |
728 | ||
729 | written = snd_pcm_writei (alsa->handle, src, len); | |
4787c71d | 730 | |
571ec3d6 | 731 | if (written <= 0) { |
4787c71d | 732 | switch (written) { |
571ec3d6 FB |
733 | case 0: |
734 | if (conf.verbose) { | |
735 | dolog ("Failed to write %d frames (wrote zero)\n", len); | |
4787c71d | 736 | } |
541ba4e7 | 737 | return; |
4787c71d | 738 | |
571ec3d6 FB |
739 | case -EPIPE: |
740 | if (alsa_recover (alsa->handle)) { | |
741 | alsa_logerr (written, "Failed to write %d frames\n", | |
742 | len); | |
541ba4e7 | 743 | return; |
571ec3d6 FB |
744 | } |
745 | if (conf.verbose) { | |
746 | dolog ("Recovering from playback xrun\n"); | |
747 | } | |
4787c71d FB |
748 | continue; |
749 | ||
86635821 BM |
750 | case -ESTRPIPE: |
751 | /* stream is suspended and waiting for an | |
752 | application recovery */ | |
753 | if (alsa_resume (alsa->handle)) { | |
754 | alsa_logerr (written, "Failed to write %d frames\n", | |
755 | len); | |
541ba4e7 | 756 | return; |
86635821 BM |
757 | } |
758 | if (conf.verbose) { | |
759 | dolog ("Resuming suspended output stream\n"); | |
760 | } | |
761 | continue; | |
762 | ||
571ec3d6 | 763 | case -EAGAIN: |
541ba4e7 | 764 | return; |
571ec3d6 | 765 | |
4787c71d | 766 | default: |
541ba4e7 | 767 | alsa_logerr (written, "Failed to write %d frames from %p\n", |
768 | len, src); | |
769 | return; | |
1d14ffa9 | 770 | } |
1d14ffa9 | 771 | } |
1d14ffa9 | 772 | |
541ba4e7 | 773 | alsa->wpos = (alsa->wpos + written) % hw->samples; |
774 | alsa->pending -= written; | |
571ec3d6 | 775 | len -= written; |
4787c71d | 776 | } |
1d14ffa9 | 777 | } |
541ba4e7 | 778 | } |
779 | ||
bdff253c | 780 | static int alsa_run_out (HWVoiceOut *hw, int live) |
541ba4e7 | 781 | { |
782 | ALSAVoiceOut *alsa = (ALSAVoiceOut *) hw; | |
bdff253c | 783 | int decr; |
541ba4e7 | 784 | snd_pcm_sframes_t avail; |
785 | ||
541ba4e7 | 786 | avail = alsa_get_avail (alsa->handle); |
787 | if (avail < 0) { | |
788 | dolog ("Could not get number of available playback frames\n"); | |
789 | return 0; | |
790 | } | |
791 | ||
792 | decr = audio_MIN (live, avail); | |
793 | decr = audio_pcm_hw_clip_out (hw, alsa->pcm_buf, decr, alsa->pending); | |
794 | alsa->pending += decr; | |
795 | alsa_write_pending (alsa); | |
1d14ffa9 FB |
796 | return decr; |
797 | } | |
798 | ||
799 | static void alsa_fini_out (HWVoiceOut *hw) | |
800 | { | |
801 | ALSAVoiceOut *alsa = (ALSAVoiceOut *) hw; | |
802 | ||
803 | ldebug ("alsa_fini\n"); | |
6ebfda13 | 804 | alsa_anal_close (&alsa->handle, &alsa->pollhlp); |
1d14ffa9 | 805 | |
fb7da626 MA |
806 | g_free(alsa->pcm_buf); |
807 | alsa->pcm_buf = NULL; | |
1d14ffa9 FB |
808 | } |
809 | ||
5706db1d KZ |
810 | static int alsa_init_out(HWVoiceOut *hw, struct audsettings *as, |
811 | void *drv_opaque) | |
1d14ffa9 FB |
812 | { |
813 | ALSAVoiceOut *alsa = (ALSAVoiceOut *) hw; | |
814 | struct alsa_params_req req; | |
815 | struct alsa_params_obt obt; | |
1d14ffa9 | 816 | snd_pcm_t *handle; |
1ea879e5 | 817 | struct audsettings obt_as; |
1d14ffa9 | 818 | |
d66bddd7 | 819 | req.fmt = aud_to_alsafmt (as->fmt, as->endianness); |
c0fe3827 FB |
820 | req.freq = as->freq; |
821 | req.nchannels = as->nchannels; | |
1d14ffa9 FB |
822 | req.period_size = conf.period_size_out; |
823 | req.buffer_size = conf.buffer_size_out; | |
23fb600b | 824 | req.size_in_usec = conf.size_in_usec_out; |
97f155dd GH |
825 | req.override_mask = |
826 | (conf.period_size_out_overridden ? 1 : 0) | | |
827 | (conf.buffer_size_out_overridden ? 2 : 0); | |
1d14ffa9 FB |
828 | |
829 | if (alsa_open (0, &req, &obt, &handle)) { | |
830 | return -1; | |
831 | } | |
832 | ||
c0fe3827 FB |
833 | obt_as.freq = obt.freq; |
834 | obt_as.nchannels = obt.nchannels; | |
ca9cc28c AZ |
835 | obt_as.fmt = obt.fmt; |
836 | obt_as.endianness = obt.endianness; | |
c0fe3827 | 837 | |
d929eba5 | 838 | audio_pcm_init_info (&hw->info, &obt_as); |
c0fe3827 | 839 | hw->samples = obt.samples; |
1d14ffa9 | 840 | |
c0fe3827 | 841 | alsa->pcm_buf = audio_calloc (AUDIO_FUNC, obt.samples, 1 << hw->info.shift); |
1d14ffa9 | 842 | if (!alsa->pcm_buf) { |
4787c71d FB |
843 | dolog ("Could not allocate DAC buffer (%d samples, each %d bytes)\n", |
844 | hw->samples, 1 << hw->info.shift); | |
6ebfda13 | 845 | alsa_anal_close1 (&handle); |
1d14ffa9 FB |
846 | return -1; |
847 | } | |
848 | ||
849 | alsa->handle = handle; | |
1d14ffa9 FB |
850 | return 0; |
851 | } | |
852 | ||
38cc9b60 JM |
853 | #define VOICE_CTL_PAUSE 0 |
854 | #define VOICE_CTL_PREPARE 1 | |
855 | #define VOICE_CTL_START 2 | |
856 | ||
857 | static int alsa_voice_ctl (snd_pcm_t *handle, const char *typ, int ctl) | |
1d14ffa9 FB |
858 | { |
859 | int err; | |
571ec3d6 | 860 | |
38cc9b60 | 861 | if (ctl == VOICE_CTL_PAUSE) { |
571ec3d6 FB |
862 | err = snd_pcm_drop (handle); |
863 | if (err < 0) { | |
32d448c4 | 864 | alsa_logerr (err, "Could not stop %s\n", typ); |
571ec3d6 FB |
865 | return -1; |
866 | } | |
867 | } | |
868 | else { | |
869 | err = snd_pcm_prepare (handle); | |
870 | if (err < 0) { | |
32d448c4 | 871 | alsa_logerr (err, "Could not prepare handle for %s\n", typ); |
571ec3d6 FB |
872 | return -1; |
873 | } | |
38cc9b60 JM |
874 | if (ctl == VOICE_CTL_START) { |
875 | err = snd_pcm_start(handle); | |
876 | if (err < 0) { | |
877 | alsa_logerr (err, "Could not start handle for %s\n", typ); | |
878 | return -1; | |
879 | } | |
880 | } | |
571ec3d6 FB |
881 | } |
882 | ||
883 | return 0; | |
884 | } | |
885 | ||
886 | static int alsa_ctl_out (HWVoiceOut *hw, int cmd, ...) | |
887 | { | |
1d14ffa9 FB |
888 | ALSAVoiceOut *alsa = (ALSAVoiceOut *) hw; |
889 | ||
890 | switch (cmd) { | |
891 | case VOICE_ENABLE: | |
301901b5 | 892 | { |
893 | va_list ap; | |
894 | int poll_mode; | |
895 | ||
896 | va_start (ap, cmd); | |
897 | poll_mode = va_arg (ap, int); | |
898 | va_end (ap); | |
899 | ||
900 | ldebug ("enabling voice\n"); | |
901 | if (poll_mode && alsa_poll_out (hw)) { | |
902 | poll_mode = 0; | |
903 | } | |
904 | hw->poll_mode = poll_mode; | |
38cc9b60 | 905 | return alsa_voice_ctl (alsa->handle, "playback", VOICE_CTL_PREPARE); |
8b438ba3 | 906 | } |
1d14ffa9 FB |
907 | |
908 | case VOICE_DISABLE: | |
909 | ldebug ("disabling voice\n"); | |
22d948a2 JM |
910 | if (hw->poll_mode) { |
911 | hw->poll_mode = 0; | |
912 | alsa_fini_poll (&alsa->pollhlp); | |
913 | } | |
38cc9b60 | 914 | return alsa_voice_ctl (alsa->handle, "playback", VOICE_CTL_PAUSE); |
1d14ffa9 | 915 | } |
571ec3d6 FB |
916 | |
917 | return -1; | |
1d14ffa9 FB |
918 | } |
919 | ||
5706db1d | 920 | static int alsa_init_in(HWVoiceIn *hw, struct audsettings *as, void *drv_opaque) |
1d14ffa9 FB |
921 | { |
922 | ALSAVoiceIn *alsa = (ALSAVoiceIn *) hw; | |
923 | struct alsa_params_req req; | |
924 | struct alsa_params_obt obt; | |
1d14ffa9 | 925 | snd_pcm_t *handle; |
1ea879e5 | 926 | struct audsettings obt_as; |
1d14ffa9 | 927 | |
d66bddd7 | 928 | req.fmt = aud_to_alsafmt (as->fmt, as->endianness); |
c0fe3827 FB |
929 | req.freq = as->freq; |
930 | req.nchannels = as->nchannels; | |
1d14ffa9 FB |
931 | req.period_size = conf.period_size_in; |
932 | req.buffer_size = conf.buffer_size_in; | |
7a24c800 | 933 | req.size_in_usec = conf.size_in_usec_in; |
97f155dd GH |
934 | req.override_mask = |
935 | (conf.period_size_in_overridden ? 1 : 0) | | |
936 | (conf.buffer_size_in_overridden ? 2 : 0); | |
1d14ffa9 FB |
937 | |
938 | if (alsa_open (1, &req, &obt, &handle)) { | |
939 | return -1; | |
940 | } | |
941 | ||
c0fe3827 FB |
942 | obt_as.freq = obt.freq; |
943 | obt_as.nchannels = obt.nchannels; | |
ca9cc28c AZ |
944 | obt_as.fmt = obt.fmt; |
945 | obt_as.endianness = obt.endianness; | |
c0fe3827 | 946 | |
d929eba5 | 947 | audio_pcm_init_info (&hw->info, &obt_as); |
c0fe3827 FB |
948 | hw->samples = obt.samples; |
949 | ||
950 | alsa->pcm_buf = audio_calloc (AUDIO_FUNC, hw->samples, 1 << hw->info.shift); | |
1d14ffa9 | 951 | if (!alsa->pcm_buf) { |
4787c71d FB |
952 | dolog ("Could not allocate ADC buffer (%d samples, each %d bytes)\n", |
953 | hw->samples, 1 << hw->info.shift); | |
6ebfda13 | 954 | alsa_anal_close1 (&handle); |
1d14ffa9 FB |
955 | return -1; |
956 | } | |
957 | ||
958 | alsa->handle = handle; | |
959 | return 0; | |
960 | } | |
961 | ||
962 | static void alsa_fini_in (HWVoiceIn *hw) | |
963 | { | |
964 | ALSAVoiceIn *alsa = (ALSAVoiceIn *) hw; | |
965 | ||
6ebfda13 | 966 | alsa_anal_close (&alsa->handle, &alsa->pollhlp); |
1d14ffa9 | 967 | |
fb7da626 MA |
968 | g_free(alsa->pcm_buf); |
969 | alsa->pcm_buf = NULL; | |
1d14ffa9 FB |
970 | } |
971 | ||
972 | static int alsa_run_in (HWVoiceIn *hw) | |
973 | { | |
974 | ALSAVoiceIn *alsa = (ALSAVoiceIn *) hw; | |
975 | int hwshift = hw->info.shift; | |
976 | int i; | |
977 | int live = audio_pcm_hw_get_live_in (hw); | |
978 | int dead = hw->samples - live; | |
571ec3d6 | 979 | int decr; |
1d14ffa9 FB |
980 | struct { |
981 | int add; | |
982 | int len; | |
983 | } bufs[2] = { | |
98f9f48c | 984 | { .add = hw->wpos, .len = 0 }, |
985 | { .add = 0, .len = 0 } | |
1d14ffa9 | 986 | }; |
571ec3d6 | 987 | snd_pcm_sframes_t avail; |
1d14ffa9 FB |
988 | snd_pcm_uframes_t read_samples = 0; |
989 | ||
990 | if (!dead) { | |
991 | return 0; | |
992 | } | |
993 | ||
571ec3d6 FB |
994 | avail = alsa_get_avail (alsa->handle); |
995 | if (avail < 0) { | |
996 | dolog ("Could not get number of captured frames\n"); | |
997 | return 0; | |
998 | } | |
999 | ||
86635821 BM |
1000 | if (!avail) { |
1001 | snd_pcm_state_t state; | |
1002 | ||
1003 | state = snd_pcm_state (alsa->handle); | |
1004 | switch (state) { | |
1005 | case SND_PCM_STATE_PREPARED: | |
1006 | avail = hw->samples; | |
1007 | break; | |
1008 | case SND_PCM_STATE_SUSPENDED: | |
1009 | /* stream is suspended and waiting for an application recovery */ | |
1010 | if (alsa_resume (alsa->handle)) { | |
1011 | dolog ("Failed to resume suspended input stream\n"); | |
1012 | return 0; | |
1013 | } | |
1014 | if (conf.verbose) { | |
1015 | dolog ("Resuming suspended input stream\n"); | |
1016 | } | |
1017 | break; | |
1018 | default: | |
1019 | if (conf.verbose) { | |
1020 | dolog ("No frames available and ALSA state is %d\n", state); | |
1021 | } | |
1022 | return 0; | |
1023 | } | |
571ec3d6 FB |
1024 | } |
1025 | ||
1026 | decr = audio_MIN (dead, avail); | |
1027 | if (!decr) { | |
1028 | return 0; | |
1029 | } | |
1030 | ||
1031 | if (hw->wpos + decr > hw->samples) { | |
1d14ffa9 | 1032 | bufs[0].len = (hw->samples - hw->wpos); |
571ec3d6 | 1033 | bufs[1].len = (decr - (hw->samples - hw->wpos)); |
1d14ffa9 FB |
1034 | } |
1035 | else { | |
571ec3d6 | 1036 | bufs[0].len = decr; |
1d14ffa9 FB |
1037 | } |
1038 | ||
1d14ffa9 FB |
1039 | for (i = 0; i < 2; ++i) { |
1040 | void *src; | |
1ea879e5 | 1041 | struct st_sample *dst; |
1d14ffa9 FB |
1042 | snd_pcm_sframes_t nread; |
1043 | snd_pcm_uframes_t len; | |
1044 | ||
1045 | len = bufs[i].len; | |
1046 | ||
1047 | src = advance (alsa->pcm_buf, bufs[i].add << hwshift); | |
1048 | dst = hw->conv_buf + bufs[i].add; | |
1049 | ||
1050 | while (len) { | |
1051 | nread = snd_pcm_readi (alsa->handle, src, len); | |
1052 | ||
571ec3d6 | 1053 | if (nread <= 0) { |
1d14ffa9 | 1054 | switch (nread) { |
571ec3d6 FB |
1055 | case 0: |
1056 | if (conf.verbose) { | |
1057 | dolog ("Failed to read %ld frames (read zero)\n", len); | |
1d14ffa9 | 1058 | } |
1d14ffa9 FB |
1059 | goto exit; |
1060 | ||
571ec3d6 FB |
1061 | case -EPIPE: |
1062 | if (alsa_recover (alsa->handle)) { | |
1063 | alsa_logerr (nread, "Failed to read %ld frames\n", len); | |
1064 | goto exit; | |
1065 | } | |
1066 | if (conf.verbose) { | |
1067 | dolog ("Recovering from capture xrun\n"); | |
1068 | } | |
1d14ffa9 FB |
1069 | continue; |
1070 | ||
571ec3d6 FB |
1071 | case -EAGAIN: |
1072 | goto exit; | |
1073 | ||
1d14ffa9 FB |
1074 | default: |
1075 | alsa_logerr ( | |
1076 | nread, | |
1077 | "Failed to read %ld frames from %p\n", | |
1078 | len, | |
1079 | src | |
1080 | ); | |
1081 | goto exit; | |
1082 | } | |
1083 | } | |
1084 | ||
00e07679 | 1085 | hw->conv (dst, src, nread); |
1d14ffa9 FB |
1086 | |
1087 | src = advance (src, nread << hwshift); | |
1088 | dst += nread; | |
1089 | ||
1090 | read_samples += nread; | |
1091 | len -= nread; | |
1092 | } | |
1093 | } | |
1094 | ||
1095 | exit: | |
1096 | hw->wpos = (hw->wpos + read_samples) % hw->samples; | |
1097 | return read_samples; | |
1098 | } | |
1099 | ||
1100 | static int alsa_read (SWVoiceIn *sw, void *buf, int size) | |
1101 | { | |
1102 | return audio_pcm_sw_read (sw, buf, size); | |
1103 | } | |
1104 | ||
1105 | static int alsa_ctl_in (HWVoiceIn *hw, int cmd, ...) | |
1106 | { | |
571ec3d6 FB |
1107 | ALSAVoiceIn *alsa = (ALSAVoiceIn *) hw; |
1108 | ||
1109 | switch (cmd) { | |
1110 | case VOICE_ENABLE: | |
a628b869 | 1111 | { |
1112 | va_list ap; | |
1113 | int poll_mode; | |
8b438ba3 | 1114 | |
a628b869 | 1115 | va_start (ap, cmd); |
1116 | poll_mode = va_arg (ap, int); | |
1117 | va_end (ap); | |
1118 | ||
1119 | ldebug ("enabling voice\n"); | |
1120 | if (poll_mode && alsa_poll_in (hw)) { | |
1121 | poll_mode = 0; | |
1122 | } | |
1123 | hw->poll_mode = poll_mode; | |
1124 | ||
38cc9b60 | 1125 | return alsa_voice_ctl (alsa->handle, "capture", VOICE_CTL_START); |
a628b869 | 1126 | } |
571ec3d6 FB |
1127 | |
1128 | case VOICE_DISABLE: | |
1129 | ldebug ("disabling voice\n"); | |
8b438ba3 | 1130 | if (hw->poll_mode) { |
1131 | hw->poll_mode = 0; | |
1132 | alsa_fini_poll (&alsa->pollhlp); | |
1133 | } | |
38cc9b60 | 1134 | return alsa_voice_ctl (alsa->handle, "capture", VOICE_CTL_PAUSE); |
571ec3d6 FB |
1135 | } |
1136 | ||
1137 | return -1; | |
1d14ffa9 FB |
1138 | } |
1139 | ||
1140 | static void *alsa_audio_init (void) | |
1141 | { | |
1142 | return &conf; | |
1143 | } | |
1144 | ||
1145 | static void alsa_audio_fini (void *opaque) | |
1146 | { | |
1147 | (void) opaque; | |
1148 | } | |
1149 | ||
1150 | static struct audio_option alsa_options[] = { | |
98f9f48c | 1151 | { |
1152 | .name = "DAC_SIZE_IN_USEC", | |
1153 | .tag = AUD_OPT_BOOL, | |
1154 | .valp = &conf.size_in_usec_out, | |
1155 | .descr = "DAC period/buffer size in microseconds (otherwise in frames)" | |
1156 | }, | |
1157 | { | |
1158 | .name = "DAC_PERIOD_SIZE", | |
1159 | .tag = AUD_OPT_INT, | |
1160 | .valp = &conf.period_size_out, | |
1161 | .descr = "DAC period size (0 to go with system default)", | |
1162 | .overriddenp = &conf.period_size_out_overridden | |
1163 | }, | |
1164 | { | |
1165 | .name = "DAC_BUFFER_SIZE", | |
1166 | .tag = AUD_OPT_INT, | |
1167 | .valp = &conf.buffer_size_out, | |
1168 | .descr = "DAC buffer size (0 to go with system default)", | |
1169 | .overriddenp = &conf.buffer_size_out_overridden | |
1170 | }, | |
1171 | { | |
1172 | .name = "ADC_SIZE_IN_USEC", | |
1173 | .tag = AUD_OPT_BOOL, | |
1174 | .valp = &conf.size_in_usec_in, | |
1175 | .descr = | |
1176 | "ADC period/buffer size in microseconds (otherwise in frames)" | |
1177 | }, | |
1178 | { | |
1179 | .name = "ADC_PERIOD_SIZE", | |
1180 | .tag = AUD_OPT_INT, | |
1181 | .valp = &conf.period_size_in, | |
1182 | .descr = "ADC period size (0 to go with system default)", | |
1183 | .overriddenp = &conf.period_size_in_overridden | |
1184 | }, | |
1185 | { | |
1186 | .name = "ADC_BUFFER_SIZE", | |
1187 | .tag = AUD_OPT_INT, | |
1188 | .valp = &conf.buffer_size_in, | |
1189 | .descr = "ADC buffer size (0 to go with system default)", | |
1190 | .overriddenp = &conf.buffer_size_in_overridden | |
1191 | }, | |
1192 | { | |
1193 | .name = "THRESHOLD", | |
1194 | .tag = AUD_OPT_INT, | |
1195 | .valp = &conf.threshold, | |
1196 | .descr = "(undocumented)" | |
1197 | }, | |
1198 | { | |
1199 | .name = "DAC_DEV", | |
1200 | .tag = AUD_OPT_STR, | |
1201 | .valp = &conf.pcm_name_out, | |
1202 | .descr = "DAC device name (for instance dmix)" | |
1203 | }, | |
1204 | { | |
1205 | .name = "ADC_DEV", | |
1206 | .tag = AUD_OPT_STR, | |
1207 | .valp = &conf.pcm_name_in, | |
1208 | .descr = "ADC device name" | |
1209 | }, | |
1210 | { | |
1211 | .name = "VERBOSE", | |
1212 | .tag = AUD_OPT_BOOL, | |
1213 | .valp = &conf.verbose, | |
1214 | .descr = "Behave in a more verbose way" | |
1215 | }, | |
2700efa3 | 1216 | { /* End of list */ } |
1d14ffa9 FB |
1217 | }; |
1218 | ||
35f4b58c | 1219 | static struct audio_pcm_ops alsa_pcm_ops = { |
1dd3e4d1 JQ |
1220 | .init_out = alsa_init_out, |
1221 | .fini_out = alsa_fini_out, | |
1222 | .run_out = alsa_run_out, | |
1223 | .write = alsa_write, | |
1224 | .ctl_out = alsa_ctl_out, | |
1225 | ||
1226 | .init_in = alsa_init_in, | |
1227 | .fini_in = alsa_fini_in, | |
1228 | .run_in = alsa_run_in, | |
1229 | .read = alsa_read, | |
8b438ba3 | 1230 | .ctl_in = alsa_ctl_in, |
1d14ffa9 FB |
1231 | }; |
1232 | ||
1233 | struct audio_driver alsa_audio_driver = { | |
bee37f32 JQ |
1234 | .name = "alsa", |
1235 | .descr = "ALSA http://www.alsa-project.org", | |
1236 | .options = alsa_options, | |
1237 | .init = alsa_audio_init, | |
1238 | .fini = alsa_audio_fini, | |
1239 | .pcm_ops = &alsa_pcm_ops, | |
1240 | .can_be_default = 1, | |
1241 | .max_voices_out = INT_MAX, | |
1242 | .max_voices_in = INT_MAX, | |
1243 | .voice_size_out = sizeof (ALSAVoiceOut), | |
1244 | .voice_size_in = sizeof (ALSAVoiceIn) | |
1d14ffa9 | 1245 | }; |