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Commit | Line | Data |
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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 | */ | |
6086a565 | 24 | #include "qemu/osdep.h" |
1d14ffa9 | 25 | #include <alsa/asoundlib.h> |
749bc4bf | 26 | #include "qemu-common.h" |
1de7afc9 | 27 | #include "qemu/main-loop.h" |
749bc4bf | 28 | #include "audio.h" |
fbb7ef56 | 29 | #include "trace.h" |
1d14ffa9 | 30 | |
2637872b | 31 | #pragma GCC diagnostic ignored "-Waddress" |
2637872b | 32 | |
1d14ffa9 FB |
33 | #define AUDIO_CAP "alsa" |
34 | #include "audio_int.h" | |
35 | ||
765b37da KZ |
36 | typedef struct ALSAConf { |
37 | int size_in_usec_in; | |
38 | int size_in_usec_out; | |
39 | const char *pcm_name_in; | |
40 | const char *pcm_name_out; | |
41 | unsigned int buffer_size_in; | |
42 | unsigned int period_size_in; | |
43 | unsigned int buffer_size_out; | |
44 | unsigned int period_size_out; | |
45 | unsigned int threshold; | |
46 | ||
47 | int buffer_size_in_overridden; | |
48 | int period_size_in_overridden; | |
49 | ||
50 | int buffer_size_out_overridden; | |
51 | int period_size_out_overridden; | |
765b37da KZ |
52 | } ALSAConf; |
53 | ||
8b438ba3 | 54 | struct pollhlp { |
55 | snd_pcm_t *handle; | |
56 | struct pollfd *pfds; | |
765b37da | 57 | ALSAConf *conf; |
8b438ba3 | 58 | int count; |
b4f763b8 | 59 | int mask; |
8b438ba3 | 60 | }; |
61 | ||
1d14ffa9 FB |
62 | typedef struct ALSAVoiceOut { |
63 | HWVoiceOut hw; | |
541ba4e7 | 64 | int wpos; |
65 | int pending; | |
1d14ffa9 FB |
66 | void *pcm_buf; |
67 | snd_pcm_t *handle; | |
8b438ba3 | 68 | struct pollhlp pollhlp; |
1d14ffa9 FB |
69 | } ALSAVoiceOut; |
70 | ||
71 | typedef struct ALSAVoiceIn { | |
72 | HWVoiceIn hw; | |
73 | snd_pcm_t *handle; | |
74 | void *pcm_buf; | |
8b438ba3 | 75 | struct pollhlp pollhlp; |
1d14ffa9 FB |
76 | } ALSAVoiceIn; |
77 | ||
1d14ffa9 | 78 | struct alsa_params_req { |
ca9cc28c AZ |
79 | int freq; |
80 | snd_pcm_format_t fmt; | |
81 | int nchannels; | |
7a24c800 | 82 | int size_in_usec; |
64333899 | 83 | int override_mask; |
1d14ffa9 FB |
84 | unsigned int buffer_size; |
85 | unsigned int period_size; | |
86 | }; | |
87 | ||
88 | struct alsa_params_obt { | |
89 | int freq; | |
85bc5852 | 90 | AudioFormat fmt; |
ca9cc28c | 91 | int endianness; |
1d14ffa9 | 92 | int nchannels; |
c0fe3827 | 93 | snd_pcm_uframes_t samples; |
1d14ffa9 FB |
94 | }; |
95 | ||
96 | static void GCC_FMT_ATTR (2, 3) alsa_logerr (int err, const char *fmt, ...) | |
97 | { | |
98 | va_list ap; | |
99 | ||
100 | va_start (ap, fmt); | |
101 | AUD_vlog (AUDIO_CAP, fmt, ap); | |
102 | va_end (ap); | |
103 | ||
104 | AUD_log (AUDIO_CAP, "Reason: %s\n", snd_strerror (err)); | |
105 | } | |
106 | ||
107 | static void GCC_FMT_ATTR (3, 4) alsa_logerr2 ( | |
108 | int err, | |
109 | const char *typ, | |
110 | const char *fmt, | |
111 | ... | |
112 | ) | |
113 | { | |
114 | va_list ap; | |
115 | ||
c0fe3827 | 116 | AUD_log (AUDIO_CAP, "Could not initialize %s\n", typ); |
1d14ffa9 FB |
117 | |
118 | va_start (ap, fmt); | |
119 | AUD_vlog (AUDIO_CAP, fmt, ap); | |
120 | va_end (ap); | |
121 | ||
122 | AUD_log (AUDIO_CAP, "Reason: %s\n", snd_strerror (err)); | |
123 | } | |
124 | ||
6ebfda13 | 125 | static void alsa_fini_poll (struct pollhlp *hlp) |
126 | { | |
127 | int i; | |
128 | struct pollfd *pfds = hlp->pfds; | |
129 | ||
130 | if (pfds) { | |
131 | for (i = 0; i < hlp->count; ++i) { | |
132 | qemu_set_fd_handler (pfds[i].fd, NULL, NULL, NULL); | |
133 | } | |
7267c094 | 134 | g_free (pfds); |
6ebfda13 | 135 | } |
136 | hlp->pfds = NULL; | |
137 | hlp->count = 0; | |
138 | hlp->handle = NULL; | |
139 | } | |
140 | ||
141 | static void alsa_anal_close1 (snd_pcm_t **handlep) | |
1d14ffa9 FB |
142 | { |
143 | int err = snd_pcm_close (*handlep); | |
144 | if (err) { | |
145 | alsa_logerr (err, "Failed to close PCM handle %p\n", *handlep); | |
146 | } | |
147 | *handlep = NULL; | |
148 | } | |
149 | ||
6ebfda13 | 150 | static void alsa_anal_close (snd_pcm_t **handlep, struct pollhlp *hlp) |
151 | { | |
152 | alsa_fini_poll (hlp); | |
153 | alsa_anal_close1 (handlep); | |
154 | } | |
155 | ||
8b438ba3 | 156 | static int alsa_recover (snd_pcm_t *handle) |
157 | { | |
158 | int err = snd_pcm_prepare (handle); | |
159 | if (err < 0) { | |
160 | alsa_logerr (err, "Failed to prepare handle %p\n", handle); | |
161 | return -1; | |
162 | } | |
163 | return 0; | |
164 | } | |
165 | ||
166 | static int alsa_resume (snd_pcm_t *handle) | |
167 | { | |
168 | int err = snd_pcm_resume (handle); | |
169 | if (err < 0) { | |
170 | alsa_logerr (err, "Failed to resume handle %p\n", handle); | |
171 | return -1; | |
172 | } | |
173 | return 0; | |
174 | } | |
175 | ||
176 | static void alsa_poll_handler (void *opaque) | |
177 | { | |
178 | int err, count; | |
179 | snd_pcm_state_t state; | |
180 | struct pollhlp *hlp = opaque; | |
181 | unsigned short revents; | |
182 | ||
183 | count = poll (hlp->pfds, hlp->count, 0); | |
184 | if (count < 0) { | |
185 | dolog ("alsa_poll_handler: poll %s\n", strerror (errno)); | |
186 | return; | |
187 | } | |
188 | ||
189 | if (!count) { | |
190 | return; | |
191 | } | |
192 | ||
193 | /* XXX: ALSA example uses initial count, not the one returned by | |
194 | poll, correct? */ | |
195 | err = snd_pcm_poll_descriptors_revents (hlp->handle, hlp->pfds, | |
196 | hlp->count, &revents); | |
197 | if (err < 0) { | |
198 | alsa_logerr (err, "snd_pcm_poll_descriptors_revents"); | |
199 | return; | |
200 | } | |
201 | ||
b4f763b8 | 202 | if (!(revents & hlp->mask)) { |
fbb7ef56 | 203 | trace_alsa_revents(revents); |
8b438ba3 | 204 | return; |
205 | } | |
206 | ||
207 | state = snd_pcm_state (hlp->handle); | |
208 | switch (state) { | |
d9812b03 | 209 | case SND_PCM_STATE_SETUP: |
210 | alsa_recover (hlp->handle); | |
211 | break; | |
212 | ||
8b438ba3 | 213 | case SND_PCM_STATE_XRUN: |
214 | alsa_recover (hlp->handle); | |
215 | break; | |
216 | ||
217 | case SND_PCM_STATE_SUSPENDED: | |
218 | alsa_resume (hlp->handle); | |
219 | break; | |
220 | ||
221 | case SND_PCM_STATE_PREPARED: | |
222 | audio_run ("alsa run (prepared)"); | |
223 | break; | |
224 | ||
225 | case SND_PCM_STATE_RUNNING: | |
226 | audio_run ("alsa run (running)"); | |
227 | break; | |
228 | ||
229 | default: | |
230 | dolog ("Unexpected state %d\n", state); | |
231 | } | |
232 | } | |
233 | ||
b4f763b8 | 234 | static int alsa_poll_helper (snd_pcm_t *handle, struct pollhlp *hlp, int mask) |
8b438ba3 | 235 | { |
236 | int i, count, err; | |
237 | struct pollfd *pfds; | |
238 | ||
239 | count = snd_pcm_poll_descriptors_count (handle); | |
240 | if (count <= 0) { | |
241 | dolog ("Could not initialize poll mode\n" | |
242 | "Invalid number of poll descriptors %d\n", count); | |
243 | return -1; | |
244 | } | |
245 | ||
246 | pfds = audio_calloc ("alsa_poll_helper", count, sizeof (*pfds)); | |
247 | if (!pfds) { | |
248 | dolog ("Could not initialize poll mode\n"); | |
249 | return -1; | |
250 | } | |
251 | ||
252 | err = snd_pcm_poll_descriptors (handle, pfds, count); | |
253 | if (err < 0) { | |
254 | alsa_logerr (err, "Could not initialize poll mode\n" | |
255 | "Could not obtain poll descriptors\n"); | |
7267c094 | 256 | g_free (pfds); |
8b438ba3 | 257 | return -1; |
258 | } | |
259 | ||
260 | for (i = 0; i < count; ++i) { | |
261 | if (pfds[i].events & POLLIN) { | |
be93f216 | 262 | qemu_set_fd_handler (pfds[i].fd, alsa_poll_handler, NULL, hlp); |
8b438ba3 | 263 | } |
264 | if (pfds[i].events & POLLOUT) { | |
fbb7ef56 | 265 | trace_alsa_pollout(i, pfds[i].fd); |
be93f216 | 266 | qemu_set_fd_handler (pfds[i].fd, NULL, alsa_poll_handler, hlp); |
8b438ba3 | 267 | } |
fbb7ef56 | 268 | trace_alsa_set_handler(pfds[i].events, i, pfds[i].fd, err); |
8b438ba3 | 269 | |
8b438ba3 | 270 | } |
271 | hlp->pfds = pfds; | |
272 | hlp->count = count; | |
273 | hlp->handle = handle; | |
b4f763b8 | 274 | hlp->mask = mask; |
8b438ba3 | 275 | return 0; |
276 | } | |
277 | ||
278 | static int alsa_poll_out (HWVoiceOut *hw) | |
279 | { | |
280 | ALSAVoiceOut *alsa = (ALSAVoiceOut *) hw; | |
281 | ||
b4f763b8 | 282 | return alsa_poll_helper (alsa->handle, &alsa->pollhlp, POLLOUT); |
8b438ba3 | 283 | } |
284 | ||
285 | static int alsa_poll_in (HWVoiceIn *hw) | |
286 | { | |
287 | ALSAVoiceIn *alsa = (ALSAVoiceIn *) hw; | |
288 | ||
b4f763b8 | 289 | return alsa_poll_helper (alsa->handle, &alsa->pollhlp, POLLIN); |
8b438ba3 | 290 | } |
291 | ||
1d14ffa9 FB |
292 | static int alsa_write (SWVoiceOut *sw, void *buf, int len) |
293 | { | |
294 | return audio_pcm_sw_write (sw, buf, len); | |
295 | } | |
296 | ||
85bc5852 | 297 | static snd_pcm_format_t aud_to_alsafmt (AudioFormat fmt, int endianness) |
1d14ffa9 FB |
298 | { |
299 | switch (fmt) { | |
85bc5852 | 300 | case AUDIO_FORMAT_S8: |
1d14ffa9 FB |
301 | return SND_PCM_FORMAT_S8; |
302 | ||
85bc5852 | 303 | case AUDIO_FORMAT_U8: |
1d14ffa9 FB |
304 | return SND_PCM_FORMAT_U8; |
305 | ||
85bc5852 | 306 | case AUDIO_FORMAT_S16: |
d66bddd7 MW |
307 | if (endianness) { |
308 | return SND_PCM_FORMAT_S16_BE; | |
309 | } | |
310 | else { | |
311 | return SND_PCM_FORMAT_S16_LE; | |
312 | } | |
1d14ffa9 | 313 | |
85bc5852 | 314 | case AUDIO_FORMAT_U16: |
d66bddd7 MW |
315 | if (endianness) { |
316 | return SND_PCM_FORMAT_U16_BE; | |
317 | } | |
318 | else { | |
319 | return SND_PCM_FORMAT_U16_LE; | |
320 | } | |
1d14ffa9 | 321 | |
85bc5852 | 322 | case AUDIO_FORMAT_S32: |
d66bddd7 MW |
323 | if (endianness) { |
324 | return SND_PCM_FORMAT_S32_BE; | |
325 | } | |
326 | else { | |
327 | return SND_PCM_FORMAT_S32_LE; | |
328 | } | |
f941aa25 | 329 | |
85bc5852 | 330 | case AUDIO_FORMAT_U32: |
d66bddd7 MW |
331 | if (endianness) { |
332 | return SND_PCM_FORMAT_U32_BE; | |
333 | } | |
334 | else { | |
335 | return SND_PCM_FORMAT_U32_LE; | |
336 | } | |
f941aa25 | 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 | ||
85bc5852 | 347 | static int alsa_to_audfmt (snd_pcm_format_t alsafmt, AudioFormat *fmt, |
ca9cc28c | 348 | int *endianness) |
1d14ffa9 FB |
349 | { |
350 | switch (alsafmt) { | |
351 | case SND_PCM_FORMAT_S8: | |
352 | *endianness = 0; | |
85bc5852 | 353 | *fmt = AUDIO_FORMAT_S8; |
1d14ffa9 FB |
354 | break; |
355 | ||
356 | case SND_PCM_FORMAT_U8: | |
357 | *endianness = 0; | |
85bc5852 | 358 | *fmt = AUDIO_FORMAT_U8; |
1d14ffa9 FB |
359 | break; |
360 | ||
361 | case SND_PCM_FORMAT_S16_LE: | |
362 | *endianness = 0; | |
85bc5852 | 363 | *fmt = AUDIO_FORMAT_S16; |
1d14ffa9 FB |
364 | break; |
365 | ||
366 | case SND_PCM_FORMAT_U16_LE: | |
367 | *endianness = 0; | |
85bc5852 | 368 | *fmt = AUDIO_FORMAT_U16; |
1d14ffa9 FB |
369 | break; |
370 | ||
371 | case SND_PCM_FORMAT_S16_BE: | |
372 | *endianness = 1; | |
85bc5852 | 373 | *fmt = AUDIO_FORMAT_S16; |
1d14ffa9 FB |
374 | break; |
375 | ||
376 | case SND_PCM_FORMAT_U16_BE: | |
377 | *endianness = 1; | |
85bc5852 | 378 | *fmt = AUDIO_FORMAT_U16; |
1d14ffa9 FB |
379 | break; |
380 | ||
f941aa25 TS |
381 | case SND_PCM_FORMAT_S32_LE: |
382 | *endianness = 0; | |
85bc5852 | 383 | *fmt = AUDIO_FORMAT_S32; |
f941aa25 TS |
384 | break; |
385 | ||
386 | case SND_PCM_FORMAT_U32_LE: | |
387 | *endianness = 0; | |
85bc5852 | 388 | *fmt = AUDIO_FORMAT_U32; |
f941aa25 TS |
389 | break; |
390 | ||
391 | case SND_PCM_FORMAT_S32_BE: | |
392 | *endianness = 1; | |
85bc5852 | 393 | *fmt = AUDIO_FORMAT_S32; |
f941aa25 TS |
394 | break; |
395 | ||
396 | case SND_PCM_FORMAT_U32_BE: | |
397 | *endianness = 1; | |
85bc5852 | 398 | *fmt = AUDIO_FORMAT_U32; |
f941aa25 TS |
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 | 409 | static void alsa_dump_info (struct alsa_params_req *req, |
8bb414d2 | 410 | struct alsa_params_obt *obt, |
411 | snd_pcm_format_t obtfmt) | |
1d14ffa9 FB |
412 | { |
413 | dolog ("parameter | requested value | obtained value\n"); | |
8bb414d2 | 414 | dolog ("format | %10d | %10d\n", req->fmt, obtfmt); |
1d14ffa9 FB |
415 | dolog ("channels | %10d | %10d\n", |
416 | req->nchannels, obt->nchannels); | |
417 | dolog ("frequency | %10d | %10d\n", req->freq, obt->freq); | |
418 | dolog ("============================================\n"); | |
419 | dolog ("requested: buffer size %d period size %d\n", | |
420 | req->buffer_size, req->period_size); | |
c0fe3827 | 421 | dolog ("obtained: samples %ld\n", obt->samples); |
1d14ffa9 | 422 | } |
1d14ffa9 FB |
423 | |
424 | static void alsa_set_threshold (snd_pcm_t *handle, snd_pcm_uframes_t threshold) | |
425 | { | |
426 | int err; | |
427 | snd_pcm_sw_params_t *sw_params; | |
428 | ||
429 | snd_pcm_sw_params_alloca (&sw_params); | |
430 | ||
431 | err = snd_pcm_sw_params_current (handle, sw_params); | |
432 | if (err < 0) { | |
c0fe3827 | 433 | dolog ("Could not fully initialize DAC\n"); |
1d14ffa9 FB |
434 | alsa_logerr (err, "Failed to get current software parameters\n"); |
435 | return; | |
436 | } | |
437 | ||
438 | err = snd_pcm_sw_params_set_start_threshold (handle, sw_params, threshold); | |
439 | if (err < 0) { | |
c0fe3827 | 440 | dolog ("Could not fully initialize DAC\n"); |
1d14ffa9 FB |
441 | alsa_logerr (err, "Failed to set software threshold to %ld\n", |
442 | threshold); | |
443 | return; | |
444 | } | |
445 | ||
446 | err = snd_pcm_sw_params (handle, sw_params); | |
447 | if (err < 0) { | |
c0fe3827 | 448 | dolog ("Could not fully initialize DAC\n"); |
1d14ffa9 FB |
449 | alsa_logerr (err, "Failed to set software parameters\n"); |
450 | return; | |
451 | } | |
452 | } | |
453 | ||
454 | static int alsa_open (int in, struct alsa_params_req *req, | |
765b37da KZ |
455 | struct alsa_params_obt *obt, snd_pcm_t **handlep, |
456 | ALSAConf *conf) | |
1d14ffa9 FB |
457 | { |
458 | snd_pcm_t *handle; | |
459 | snd_pcm_hw_params_t *hw_params; | |
60fe76f3 | 460 | int err; |
7a24c800 | 461 | int size_in_usec; |
60fe76f3 | 462 | unsigned int freq, nchannels; |
765b37da | 463 | const char *pcm_name = in ? conf->pcm_name_in : conf->pcm_name_out; |
1d14ffa9 FB |
464 | snd_pcm_uframes_t obt_buffer_size; |
465 | const char *typ = in ? "ADC" : "DAC"; | |
ca9cc28c | 466 | snd_pcm_format_t obtfmt; |
1d14ffa9 FB |
467 | |
468 | freq = req->freq; | |
1d14ffa9 | 469 | nchannels = req->nchannels; |
7a24c800 | 470 | size_in_usec = req->size_in_usec; |
1d14ffa9 FB |
471 | |
472 | snd_pcm_hw_params_alloca (&hw_params); | |
473 | ||
474 | err = snd_pcm_open ( | |
475 | &handle, | |
476 | pcm_name, | |
477 | in ? SND_PCM_STREAM_CAPTURE : SND_PCM_STREAM_PLAYBACK, | |
478 | SND_PCM_NONBLOCK | |
479 | ); | |
480 | if (err < 0) { | |
481 | alsa_logerr2 (err, typ, "Failed to open `%s':\n", pcm_name); | |
482 | return -1; | |
483 | } | |
484 | ||
485 | err = snd_pcm_hw_params_any (handle, hw_params); | |
486 | if (err < 0) { | |
487 | alsa_logerr2 (err, typ, "Failed to initialize hardware parameters\n"); | |
488 | goto err; | |
489 | } | |
490 | ||
491 | err = snd_pcm_hw_params_set_access ( | |
492 | handle, | |
493 | hw_params, | |
494 | SND_PCM_ACCESS_RW_INTERLEAVED | |
495 | ); | |
496 | if (err < 0) { | |
497 | alsa_logerr2 (err, typ, "Failed to set access type\n"); | |
498 | goto err; | |
499 | } | |
500 | ||
501 | err = snd_pcm_hw_params_set_format (handle, hw_params, req->fmt); | |
fbb7ef56 | 502 | if (err < 0) { |
1d14ffa9 | 503 | alsa_logerr2 (err, typ, "Failed to set format %d\n", req->fmt); |
1d14ffa9 FB |
504 | } |
505 | ||
506 | err = snd_pcm_hw_params_set_rate_near (handle, hw_params, &freq, 0); | |
507 | if (err < 0) { | |
508 | alsa_logerr2 (err, typ, "Failed to set frequency %d\n", req->freq); | |
509 | goto err; | |
510 | } | |
511 | ||
512 | err = snd_pcm_hw_params_set_channels_near ( | |
513 | handle, | |
514 | hw_params, | |
515 | &nchannels | |
516 | ); | |
517 | if (err < 0) { | |
518 | alsa_logerr2 (err, typ, "Failed to set number of channels %d\n", | |
519 | req->nchannels); | |
520 | goto err; | |
521 | } | |
522 | ||
523 | if (nchannels != 1 && nchannels != 2) { | |
524 | alsa_logerr2 (err, typ, | |
525 | "Can not handle obtained number of channels %d\n", | |
526 | nchannels); | |
527 | goto err; | |
528 | } | |
529 | ||
7a24c800 | 530 | if (req->buffer_size) { |
f3b52983 | 531 | unsigned long obt; |
532 | ||
7a24c800 | 533 | if (size_in_usec) { |
534 | int dir = 0; | |
535 | unsigned int btime = req->buffer_size; | |
1d14ffa9 FB |
536 | |
537 | err = snd_pcm_hw_params_set_buffer_time_near ( | |
538 | handle, | |
539 | hw_params, | |
7a24c800 | 540 | &btime, |
541 | &dir | |
c0fe3827 | 542 | ); |
f3b52983 | 543 | obt = btime; |
1d14ffa9 FB |
544 | } |
545 | else { | |
7a24c800 | 546 | snd_pcm_uframes_t bsize = req->buffer_size; |
1d14ffa9 | 547 | |
7a24c800 | 548 | err = snd_pcm_hw_params_set_buffer_size_near ( |
549 | handle, | |
550 | hw_params, | |
551 | &bsize | |
552 | ); | |
f3b52983 | 553 | obt = bsize; |
7a24c800 | 554 | } |
555 | if (err < 0) { | |
556 | alsa_logerr2 (err, typ, "Failed to set buffer %s to %d\n", | |
557 | size_in_usec ? "time" : "size", req->buffer_size); | |
558 | goto err; | |
559 | } | |
f3b52983 | 560 | |
64333899 | 561 | if ((req->override_mask & 2) && (obt - req->buffer_size)) |
f3b52983 | 562 | dolog ("Requested buffer %s %u was rejected, using %lu\n", |
563 | size_in_usec ? "time" : "size", req->buffer_size, obt); | |
7a24c800 | 564 | } |
565 | ||
566 | if (req->period_size) { | |
f3b52983 | 567 | unsigned long obt; |
568 | ||
7a24c800 | 569 | if (size_in_usec) { |
570 | int dir = 0; | |
571 | unsigned int ptime = req->period_size; | |
1d14ffa9 | 572 | |
7a24c800 | 573 | err = snd_pcm_hw_params_set_period_time_near ( |
574 | handle, | |
1d14ffa9 | 575 | hw_params, |
7a24c800 | 576 | &ptime, |
577 | &dir | |
1d14ffa9 | 578 | ); |
f3b52983 | 579 | obt = ptime; |
7a24c800 | 580 | } |
581 | else { | |
a7bb29ba | 582 | int dir = 0; |
7a24c800 | 583 | snd_pcm_uframes_t psize = req->period_size; |
1d14ffa9 | 584 | |
a7bb29ba | 585 | err = snd_pcm_hw_params_set_period_size_near ( |
1d14ffa9 FB |
586 | handle, |
587 | hw_params, | |
a7bb29ba | 588 | &psize, |
589 | &dir | |
1d14ffa9 | 590 | ); |
f3b52983 | 591 | obt = psize; |
1d14ffa9 | 592 | } |
7a24c800 | 593 | |
594 | if (err < 0) { | |
595 | alsa_logerr2 (err, typ, "Failed to set period %s to %d\n", | |
596 | size_in_usec ? "time" : "size", req->period_size); | |
597 | goto err; | |
598 | } | |
f3b52983 | 599 | |
541ba4e7 | 600 | if (((req->override_mask & 1) && (obt - req->period_size))) |
f3b52983 | 601 | dolog ("Requested period %s %u was rejected, using %lu\n", |
602 | size_in_usec ? "time" : "size", req->period_size, obt); | |
1d14ffa9 FB |
603 | } |
604 | ||
605 | err = snd_pcm_hw_params (handle, hw_params); | |
606 | if (err < 0) { | |
607 | alsa_logerr2 (err, typ, "Failed to apply audio parameters\n"); | |
608 | goto err; | |
609 | } | |
610 | ||
611 | err = snd_pcm_hw_params_get_buffer_size (hw_params, &obt_buffer_size); | |
612 | if (err < 0) { | |
613 | alsa_logerr2 (err, typ, "Failed to get buffer size\n"); | |
614 | goto err; | |
615 | } | |
616 | ||
ca9cc28c AZ |
617 | err = snd_pcm_hw_params_get_format (hw_params, &obtfmt); |
618 | if (err < 0) { | |
619 | alsa_logerr2 (err, typ, "Failed to get format\n"); | |
620 | goto err; | |
621 | } | |
622 | ||
623 | if (alsa_to_audfmt (obtfmt, &obt->fmt, &obt->endianness)) { | |
624 | dolog ("Invalid format was returned %d\n", obtfmt); | |
625 | goto err; | |
626 | } | |
627 | ||
1d14ffa9 FB |
628 | err = snd_pcm_prepare (handle); |
629 | if (err < 0) { | |
c0fe3827 | 630 | alsa_logerr2 (err, typ, "Could not prepare handle %p\n", handle); |
1d14ffa9 FB |
631 | goto err; |
632 | } | |
633 | ||
765b37da | 634 | if (!in && conf->threshold) { |
1d14ffa9 FB |
635 | snd_pcm_uframes_t threshold; |
636 | int bytes_per_sec; | |
637 | ||
ca9cc28c AZ |
638 | bytes_per_sec = freq << (nchannels == 2); |
639 | ||
640 | switch (obt->fmt) { | |
85bc5852 KZ |
641 | case AUDIO_FORMAT_S8: |
642 | case AUDIO_FORMAT_U8: | |
ca9cc28c AZ |
643 | break; |
644 | ||
85bc5852 KZ |
645 | case AUDIO_FORMAT_S16: |
646 | case AUDIO_FORMAT_U16: | |
ca9cc28c AZ |
647 | bytes_per_sec <<= 1; |
648 | break; | |
649 | ||
85bc5852 KZ |
650 | case AUDIO_FORMAT_S32: |
651 | case AUDIO_FORMAT_U32: | |
ca9cc28c AZ |
652 | bytes_per_sec <<= 2; |
653 | break; | |
85bc5852 KZ |
654 | |
655 | default: | |
656 | abort(); | |
ca9cc28c | 657 | } |
1d14ffa9 | 658 | |
765b37da | 659 | threshold = (conf->threshold * bytes_per_sec) / 1000; |
1d14ffa9 FB |
660 | alsa_set_threshold (handle, threshold); |
661 | } | |
662 | ||
1d14ffa9 FB |
663 | obt->nchannels = nchannels; |
664 | obt->freq = freq; | |
c0fe3827 | 665 | obt->samples = obt_buffer_size; |
ca9cc28c | 666 | |
1d14ffa9 FB |
667 | *handlep = handle; |
668 | ||
fbb7ef56 | 669 | if (obtfmt != req->fmt || |
ca9cc28c | 670 | obt->nchannels != req->nchannels || |
fbb7ef56 | 671 | obt->freq != req->freq) { |
f093feb7 | 672 | dolog ("Audio parameters for %s\n", typ); |
8bb414d2 | 673 | alsa_dump_info (req, obt, obtfmt); |
1d14ffa9 FB |
674 | } |
675 | ||
676 | #ifdef DEBUG | |
8bb414d2 | 677 | alsa_dump_info (req, obt, obtfmt); |
1d14ffa9 FB |
678 | #endif |
679 | return 0; | |
680 | ||
681 | err: | |
6ebfda13 | 682 | alsa_anal_close1 (&handle); |
1d14ffa9 FB |
683 | return -1; |
684 | } | |
685 | ||
571ec3d6 FB |
686 | static snd_pcm_sframes_t alsa_get_avail (snd_pcm_t *handle) |
687 | { | |
688 | snd_pcm_sframes_t avail; | |
689 | ||
690 | avail = snd_pcm_avail_update (handle); | |
691 | if (avail < 0) { | |
692 | if (avail == -EPIPE) { | |
693 | if (!alsa_recover (handle)) { | |
694 | avail = snd_pcm_avail_update (handle); | |
695 | } | |
696 | } | |
697 | ||
698 | if (avail < 0) { | |
699 | alsa_logerr (avail, | |
700 | "Could not obtain number of available frames\n"); | |
701 | return -1; | |
702 | } | |
703 | } | |
704 | ||
705 | return avail; | |
706 | } | |
707 | ||
541ba4e7 | 708 | static void alsa_write_pending (ALSAVoiceOut *alsa) |
1d14ffa9 | 709 | { |
541ba4e7 | 710 | HWVoiceOut *hw = &alsa->hw; |
1d14ffa9 | 711 | |
541ba4e7 | 712 | while (alsa->pending) { |
713 | int left_till_end_samples = hw->samples - alsa->wpos; | |
714 | int len = audio_MIN (alsa->pending, left_till_end_samples); | |
715 | char *src = advance (alsa->pcm_buf, alsa->wpos << hw->info.shift); | |
1d14ffa9 | 716 | |
571ec3d6 | 717 | while (len) { |
541ba4e7 | 718 | snd_pcm_sframes_t written; |
719 | ||
720 | written = snd_pcm_writei (alsa->handle, src, len); | |
4787c71d | 721 | |
571ec3d6 | 722 | if (written <= 0) { |
4787c71d | 723 | switch (written) { |
571ec3d6 | 724 | case 0: |
fbb7ef56 | 725 | trace_alsa_wrote_zero(len); |
541ba4e7 | 726 | return; |
4787c71d | 727 | |
571ec3d6 FB |
728 | case -EPIPE: |
729 | if (alsa_recover (alsa->handle)) { | |
730 | alsa_logerr (written, "Failed to write %d frames\n", | |
731 | len); | |
541ba4e7 | 732 | return; |
571ec3d6 | 733 | } |
fbb7ef56 | 734 | trace_alsa_xrun_out(); |
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 | 744 | } |
fbb7ef56 | 745 | trace_alsa_resume_out(); |
86635821 BM |
746 | continue; |
747 | ||
571ec3d6 | 748 | case -EAGAIN: |
541ba4e7 | 749 | return; |
571ec3d6 | 750 | |
4787c71d | 751 | default: |
541ba4e7 | 752 | alsa_logerr (written, "Failed to write %d frames from %p\n", |
753 | len, src); | |
754 | return; | |
1d14ffa9 | 755 | } |
1d14ffa9 | 756 | } |
1d14ffa9 | 757 | |
541ba4e7 | 758 | alsa->wpos = (alsa->wpos + written) % hw->samples; |
759 | alsa->pending -= written; | |
571ec3d6 | 760 | len -= written; |
4787c71d | 761 | } |
1d14ffa9 | 762 | } |
541ba4e7 | 763 | } |
764 | ||
bdff253c | 765 | static int alsa_run_out (HWVoiceOut *hw, int live) |
541ba4e7 | 766 | { |
767 | ALSAVoiceOut *alsa = (ALSAVoiceOut *) hw; | |
bdff253c | 768 | int decr; |
541ba4e7 | 769 | snd_pcm_sframes_t avail; |
770 | ||
541ba4e7 | 771 | avail = alsa_get_avail (alsa->handle); |
772 | if (avail < 0) { | |
773 | dolog ("Could not get number of available playback frames\n"); | |
774 | return 0; | |
775 | } | |
776 | ||
777 | decr = audio_MIN (live, avail); | |
778 | decr = audio_pcm_hw_clip_out (hw, alsa->pcm_buf, decr, alsa->pending); | |
779 | alsa->pending += decr; | |
780 | alsa_write_pending (alsa); | |
1d14ffa9 FB |
781 | return decr; |
782 | } | |
783 | ||
784 | static void alsa_fini_out (HWVoiceOut *hw) | |
785 | { | |
786 | ALSAVoiceOut *alsa = (ALSAVoiceOut *) hw; | |
787 | ||
788 | ldebug ("alsa_fini\n"); | |
6ebfda13 | 789 | alsa_anal_close (&alsa->handle, &alsa->pollhlp); |
1d14ffa9 | 790 | |
fb7da626 MA |
791 | g_free(alsa->pcm_buf); |
792 | alsa->pcm_buf = NULL; | |
1d14ffa9 FB |
793 | } |
794 | ||
5706db1d KZ |
795 | static int alsa_init_out(HWVoiceOut *hw, struct audsettings *as, |
796 | void *drv_opaque) | |
1d14ffa9 FB |
797 | { |
798 | ALSAVoiceOut *alsa = (ALSAVoiceOut *) hw; | |
799 | struct alsa_params_req req; | |
800 | struct alsa_params_obt obt; | |
1d14ffa9 | 801 | snd_pcm_t *handle; |
1ea879e5 | 802 | struct audsettings obt_as; |
765b37da | 803 | ALSAConf *conf = drv_opaque; |
1d14ffa9 | 804 | |
d66bddd7 | 805 | req.fmt = aud_to_alsafmt (as->fmt, as->endianness); |
c0fe3827 FB |
806 | req.freq = as->freq; |
807 | req.nchannels = as->nchannels; | |
765b37da KZ |
808 | req.period_size = conf->period_size_out; |
809 | req.buffer_size = conf->buffer_size_out; | |
810 | req.size_in_usec = conf->size_in_usec_out; | |
97f155dd | 811 | req.override_mask = |
765b37da KZ |
812 | (conf->period_size_out_overridden ? 1 : 0) | |
813 | (conf->buffer_size_out_overridden ? 2 : 0); | |
1d14ffa9 | 814 | |
765b37da | 815 | if (alsa_open (0, &req, &obt, &handle, conf)) { |
1d14ffa9 FB |
816 | return -1; |
817 | } | |
818 | ||
c0fe3827 FB |
819 | obt_as.freq = obt.freq; |
820 | obt_as.nchannels = obt.nchannels; | |
ca9cc28c AZ |
821 | obt_as.fmt = obt.fmt; |
822 | obt_as.endianness = obt.endianness; | |
c0fe3827 | 823 | |
d929eba5 | 824 | audio_pcm_init_info (&hw->info, &obt_as); |
c0fe3827 | 825 | hw->samples = obt.samples; |
1d14ffa9 | 826 | |
470bcabd | 827 | alsa->pcm_buf = audio_calloc(__func__, obt.samples, 1 << hw->info.shift); |
1d14ffa9 | 828 | if (!alsa->pcm_buf) { |
4787c71d FB |
829 | dolog ("Could not allocate DAC buffer (%d samples, each %d bytes)\n", |
830 | hw->samples, 1 << hw->info.shift); | |
6ebfda13 | 831 | alsa_anal_close1 (&handle); |
1d14ffa9 FB |
832 | return -1; |
833 | } | |
834 | ||
835 | alsa->handle = handle; | |
765b37da | 836 | alsa->pollhlp.conf = conf; |
1d14ffa9 FB |
837 | return 0; |
838 | } | |
839 | ||
38cc9b60 JM |
840 | #define VOICE_CTL_PAUSE 0 |
841 | #define VOICE_CTL_PREPARE 1 | |
842 | #define VOICE_CTL_START 2 | |
843 | ||
844 | static int alsa_voice_ctl (snd_pcm_t *handle, const char *typ, int ctl) | |
1d14ffa9 FB |
845 | { |
846 | int err; | |
571ec3d6 | 847 | |
38cc9b60 | 848 | if (ctl == VOICE_CTL_PAUSE) { |
571ec3d6 FB |
849 | err = snd_pcm_drop (handle); |
850 | if (err < 0) { | |
32d448c4 | 851 | alsa_logerr (err, "Could not stop %s\n", typ); |
571ec3d6 FB |
852 | return -1; |
853 | } | |
854 | } | |
855 | else { | |
856 | err = snd_pcm_prepare (handle); | |
857 | if (err < 0) { | |
32d448c4 | 858 | alsa_logerr (err, "Could not prepare handle for %s\n", typ); |
571ec3d6 FB |
859 | return -1; |
860 | } | |
38cc9b60 JM |
861 | if (ctl == VOICE_CTL_START) { |
862 | err = snd_pcm_start(handle); | |
863 | if (err < 0) { | |
864 | alsa_logerr (err, "Could not start handle for %s\n", typ); | |
865 | return -1; | |
866 | } | |
867 | } | |
571ec3d6 FB |
868 | } |
869 | ||
870 | return 0; | |
871 | } | |
872 | ||
873 | static int alsa_ctl_out (HWVoiceOut *hw, int cmd, ...) | |
874 | { | |
1d14ffa9 FB |
875 | ALSAVoiceOut *alsa = (ALSAVoiceOut *) hw; |
876 | ||
877 | switch (cmd) { | |
878 | case VOICE_ENABLE: | |
301901b5 | 879 | { |
880 | va_list ap; | |
881 | int poll_mode; | |
882 | ||
883 | va_start (ap, cmd); | |
884 | poll_mode = va_arg (ap, int); | |
885 | va_end (ap); | |
886 | ||
887 | ldebug ("enabling voice\n"); | |
888 | if (poll_mode && alsa_poll_out (hw)) { | |
889 | poll_mode = 0; | |
890 | } | |
891 | hw->poll_mode = poll_mode; | |
38cc9b60 | 892 | return alsa_voice_ctl (alsa->handle, "playback", VOICE_CTL_PREPARE); |
8b438ba3 | 893 | } |
1d14ffa9 FB |
894 | |
895 | case VOICE_DISABLE: | |
896 | ldebug ("disabling voice\n"); | |
22d948a2 JM |
897 | if (hw->poll_mode) { |
898 | hw->poll_mode = 0; | |
899 | alsa_fini_poll (&alsa->pollhlp); | |
900 | } | |
38cc9b60 | 901 | return alsa_voice_ctl (alsa->handle, "playback", VOICE_CTL_PAUSE); |
1d14ffa9 | 902 | } |
571ec3d6 FB |
903 | |
904 | return -1; | |
1d14ffa9 FB |
905 | } |
906 | ||
5706db1d | 907 | static int alsa_init_in(HWVoiceIn *hw, struct audsettings *as, void *drv_opaque) |
1d14ffa9 FB |
908 | { |
909 | ALSAVoiceIn *alsa = (ALSAVoiceIn *) hw; | |
910 | struct alsa_params_req req; | |
911 | struct alsa_params_obt obt; | |
1d14ffa9 | 912 | snd_pcm_t *handle; |
1ea879e5 | 913 | struct audsettings obt_as; |
765b37da | 914 | ALSAConf *conf = drv_opaque; |
1d14ffa9 | 915 | |
d66bddd7 | 916 | req.fmt = aud_to_alsafmt (as->fmt, as->endianness); |
c0fe3827 FB |
917 | req.freq = as->freq; |
918 | req.nchannels = as->nchannels; | |
765b37da KZ |
919 | req.period_size = conf->period_size_in; |
920 | req.buffer_size = conf->buffer_size_in; | |
921 | req.size_in_usec = conf->size_in_usec_in; | |
97f155dd | 922 | req.override_mask = |
765b37da KZ |
923 | (conf->period_size_in_overridden ? 1 : 0) | |
924 | (conf->buffer_size_in_overridden ? 2 : 0); | |
1d14ffa9 | 925 | |
765b37da | 926 | if (alsa_open (1, &req, &obt, &handle, conf)) { |
1d14ffa9 FB |
927 | return -1; |
928 | } | |
929 | ||
c0fe3827 FB |
930 | obt_as.freq = obt.freq; |
931 | obt_as.nchannels = obt.nchannels; | |
ca9cc28c AZ |
932 | obt_as.fmt = obt.fmt; |
933 | obt_as.endianness = obt.endianness; | |
c0fe3827 | 934 | |
d929eba5 | 935 | audio_pcm_init_info (&hw->info, &obt_as); |
c0fe3827 FB |
936 | hw->samples = obt.samples; |
937 | ||
470bcabd | 938 | alsa->pcm_buf = audio_calloc(__func__, hw->samples, 1 << hw->info.shift); |
1d14ffa9 | 939 | if (!alsa->pcm_buf) { |
4787c71d FB |
940 | dolog ("Could not allocate ADC buffer (%d samples, each %d bytes)\n", |
941 | hw->samples, 1 << hw->info.shift); | |
6ebfda13 | 942 | alsa_anal_close1 (&handle); |
1d14ffa9 FB |
943 | return -1; |
944 | } | |
945 | ||
946 | alsa->handle = handle; | |
765b37da | 947 | alsa->pollhlp.conf = conf; |
1d14ffa9 FB |
948 | return 0; |
949 | } | |
950 | ||
951 | static void alsa_fini_in (HWVoiceIn *hw) | |
952 | { | |
953 | ALSAVoiceIn *alsa = (ALSAVoiceIn *) hw; | |
954 | ||
6ebfda13 | 955 | alsa_anal_close (&alsa->handle, &alsa->pollhlp); |
1d14ffa9 | 956 | |
fb7da626 MA |
957 | g_free(alsa->pcm_buf); |
958 | alsa->pcm_buf = NULL; | |
1d14ffa9 FB |
959 | } |
960 | ||
961 | static int alsa_run_in (HWVoiceIn *hw) | |
962 | { | |
963 | ALSAVoiceIn *alsa = (ALSAVoiceIn *) hw; | |
964 | int hwshift = hw->info.shift; | |
965 | int i; | |
966 | int live = audio_pcm_hw_get_live_in (hw); | |
967 | int dead = hw->samples - live; | |
571ec3d6 | 968 | int decr; |
1d14ffa9 FB |
969 | struct { |
970 | int add; | |
971 | int len; | |
972 | } bufs[2] = { | |
98f9f48c | 973 | { .add = hw->wpos, .len = 0 }, |
974 | { .add = 0, .len = 0 } | |
1d14ffa9 | 975 | }; |
571ec3d6 | 976 | snd_pcm_sframes_t avail; |
1d14ffa9 FB |
977 | snd_pcm_uframes_t read_samples = 0; |
978 | ||
979 | if (!dead) { | |
980 | return 0; | |
981 | } | |
982 | ||
571ec3d6 FB |
983 | avail = alsa_get_avail (alsa->handle); |
984 | if (avail < 0) { | |
985 | dolog ("Could not get number of captured frames\n"); | |
986 | return 0; | |
987 | } | |
988 | ||
86635821 BM |
989 | if (!avail) { |
990 | snd_pcm_state_t state; | |
991 | ||
992 | state = snd_pcm_state (alsa->handle); | |
993 | switch (state) { | |
994 | case SND_PCM_STATE_PREPARED: | |
995 | avail = hw->samples; | |
996 | break; | |
997 | case SND_PCM_STATE_SUSPENDED: | |
998 | /* stream is suspended and waiting for an application recovery */ | |
999 | if (alsa_resume (alsa->handle)) { | |
1000 | dolog ("Failed to resume suspended input stream\n"); | |
1001 | return 0; | |
1002 | } | |
fbb7ef56 | 1003 | trace_alsa_resume_in(); |
86635821 BM |
1004 | break; |
1005 | default: | |
fbb7ef56 | 1006 | trace_alsa_no_frames(state); |
86635821 BM |
1007 | return 0; |
1008 | } | |
571ec3d6 FB |
1009 | } |
1010 | ||
1011 | decr = audio_MIN (dead, avail); | |
1012 | if (!decr) { | |
1013 | return 0; | |
1014 | } | |
1015 | ||
1016 | if (hw->wpos + decr > hw->samples) { | |
1d14ffa9 | 1017 | bufs[0].len = (hw->samples - hw->wpos); |
571ec3d6 | 1018 | bufs[1].len = (decr - (hw->samples - hw->wpos)); |
1d14ffa9 FB |
1019 | } |
1020 | else { | |
571ec3d6 | 1021 | bufs[0].len = decr; |
1d14ffa9 FB |
1022 | } |
1023 | ||
1d14ffa9 FB |
1024 | for (i = 0; i < 2; ++i) { |
1025 | void *src; | |
1ea879e5 | 1026 | struct st_sample *dst; |
1d14ffa9 FB |
1027 | snd_pcm_sframes_t nread; |
1028 | snd_pcm_uframes_t len; | |
1029 | ||
1030 | len = bufs[i].len; | |
1031 | ||
1032 | src = advance (alsa->pcm_buf, bufs[i].add << hwshift); | |
1033 | dst = hw->conv_buf + bufs[i].add; | |
1034 | ||
1035 | while (len) { | |
1036 | nread = snd_pcm_readi (alsa->handle, src, len); | |
1037 | ||
571ec3d6 | 1038 | if (nread <= 0) { |
1d14ffa9 | 1039 | switch (nread) { |
571ec3d6 | 1040 | case 0: |
fbb7ef56 | 1041 | trace_alsa_read_zero(len); |
1d14ffa9 FB |
1042 | goto exit; |
1043 | ||
571ec3d6 FB |
1044 | case -EPIPE: |
1045 | if (alsa_recover (alsa->handle)) { | |
1046 | alsa_logerr (nread, "Failed to read %ld frames\n", len); | |
1047 | goto exit; | |
1048 | } | |
fbb7ef56 | 1049 | trace_alsa_xrun_in(); |
1d14ffa9 FB |
1050 | continue; |
1051 | ||
571ec3d6 FB |
1052 | case -EAGAIN: |
1053 | goto exit; | |
1054 | ||
1d14ffa9 FB |
1055 | default: |
1056 | alsa_logerr ( | |
1057 | nread, | |
1058 | "Failed to read %ld frames from %p\n", | |
1059 | len, | |
1060 | src | |
1061 | ); | |
1062 | goto exit; | |
1063 | } | |
1064 | } | |
1065 | ||
00e07679 | 1066 | hw->conv (dst, src, nread); |
1d14ffa9 FB |
1067 | |
1068 | src = advance (src, nread << hwshift); | |
1069 | dst += nread; | |
1070 | ||
1071 | read_samples += nread; | |
1072 | len -= nread; | |
1073 | } | |
1074 | } | |
1075 | ||
1076 | exit: | |
1077 | hw->wpos = (hw->wpos + read_samples) % hw->samples; | |
1078 | return read_samples; | |
1079 | } | |
1080 | ||
1081 | static int alsa_read (SWVoiceIn *sw, void *buf, int size) | |
1082 | { | |
1083 | return audio_pcm_sw_read (sw, buf, size); | |
1084 | } | |
1085 | ||
1086 | static int alsa_ctl_in (HWVoiceIn *hw, int cmd, ...) | |
1087 | { | |
571ec3d6 FB |
1088 | ALSAVoiceIn *alsa = (ALSAVoiceIn *) hw; |
1089 | ||
1090 | switch (cmd) { | |
1091 | case VOICE_ENABLE: | |
a628b869 | 1092 | { |
1093 | va_list ap; | |
1094 | int poll_mode; | |
8b438ba3 | 1095 | |
a628b869 | 1096 | va_start (ap, cmd); |
1097 | poll_mode = va_arg (ap, int); | |
1098 | va_end (ap); | |
1099 | ||
1100 | ldebug ("enabling voice\n"); | |
1101 | if (poll_mode && alsa_poll_in (hw)) { | |
1102 | poll_mode = 0; | |
1103 | } | |
1104 | hw->poll_mode = poll_mode; | |
1105 | ||
38cc9b60 | 1106 | return alsa_voice_ctl (alsa->handle, "capture", VOICE_CTL_START); |
a628b869 | 1107 | } |
571ec3d6 FB |
1108 | |
1109 | case VOICE_DISABLE: | |
1110 | ldebug ("disabling voice\n"); | |
8b438ba3 | 1111 | if (hw->poll_mode) { |
1112 | hw->poll_mode = 0; | |
1113 | alsa_fini_poll (&alsa->pollhlp); | |
1114 | } | |
38cc9b60 | 1115 | return alsa_voice_ctl (alsa->handle, "capture", VOICE_CTL_PAUSE); |
571ec3d6 FB |
1116 | } |
1117 | ||
1118 | return -1; | |
1d14ffa9 FB |
1119 | } |
1120 | ||
765b37da KZ |
1121 | static ALSAConf glob_conf = { |
1122 | .buffer_size_out = 4096, | |
1123 | .period_size_out = 1024, | |
1124 | .pcm_name_out = "default", | |
1125 | .pcm_name_in = "default", | |
1126 | }; | |
1127 | ||
71830221 | 1128 | static void *alsa_audio_init(Audiodev *dev) |
1d14ffa9 | 1129 | { |
765b37da KZ |
1130 | ALSAConf *conf = g_malloc(sizeof(ALSAConf)); |
1131 | *conf = glob_conf; | |
1132 | return conf; | |
1d14ffa9 FB |
1133 | } |
1134 | ||
1135 | static void alsa_audio_fini (void *opaque) | |
1136 | { | |
765b37da | 1137 | g_free(opaque); |
1d14ffa9 FB |
1138 | } |
1139 | ||
1140 | static struct audio_option alsa_options[] = { | |
98f9f48c | 1141 | { |
1142 | .name = "DAC_SIZE_IN_USEC", | |
1143 | .tag = AUD_OPT_BOOL, | |
765b37da | 1144 | .valp = &glob_conf.size_in_usec_out, |
98f9f48c | 1145 | .descr = "DAC period/buffer size in microseconds (otherwise in frames)" |
1146 | }, | |
1147 | { | |
1148 | .name = "DAC_PERIOD_SIZE", | |
1149 | .tag = AUD_OPT_INT, | |
765b37da | 1150 | .valp = &glob_conf.period_size_out, |
98f9f48c | 1151 | .descr = "DAC period size (0 to go with system default)", |
765b37da | 1152 | .overriddenp = &glob_conf.period_size_out_overridden |
98f9f48c | 1153 | }, |
1154 | { | |
1155 | .name = "DAC_BUFFER_SIZE", | |
1156 | .tag = AUD_OPT_INT, | |
765b37da | 1157 | .valp = &glob_conf.buffer_size_out, |
98f9f48c | 1158 | .descr = "DAC buffer size (0 to go with system default)", |
765b37da | 1159 | .overriddenp = &glob_conf.buffer_size_out_overridden |
98f9f48c | 1160 | }, |
1161 | { | |
1162 | .name = "ADC_SIZE_IN_USEC", | |
1163 | .tag = AUD_OPT_BOOL, | |
765b37da | 1164 | .valp = &glob_conf.size_in_usec_in, |
98f9f48c | 1165 | .descr = |
1166 | "ADC period/buffer size in microseconds (otherwise in frames)" | |
1167 | }, | |
1168 | { | |
1169 | .name = "ADC_PERIOD_SIZE", | |
1170 | .tag = AUD_OPT_INT, | |
765b37da | 1171 | .valp = &glob_conf.period_size_in, |
98f9f48c | 1172 | .descr = "ADC period size (0 to go with system default)", |
765b37da | 1173 | .overriddenp = &glob_conf.period_size_in_overridden |
98f9f48c | 1174 | }, |
1175 | { | |
1176 | .name = "ADC_BUFFER_SIZE", | |
1177 | .tag = AUD_OPT_INT, | |
765b37da | 1178 | .valp = &glob_conf.buffer_size_in, |
98f9f48c | 1179 | .descr = "ADC buffer size (0 to go with system default)", |
765b37da | 1180 | .overriddenp = &glob_conf.buffer_size_in_overridden |
98f9f48c | 1181 | }, |
1182 | { | |
1183 | .name = "THRESHOLD", | |
1184 | .tag = AUD_OPT_INT, | |
765b37da | 1185 | .valp = &glob_conf.threshold, |
98f9f48c | 1186 | .descr = "(undocumented)" |
1187 | }, | |
1188 | { | |
1189 | .name = "DAC_DEV", | |
1190 | .tag = AUD_OPT_STR, | |
765b37da | 1191 | .valp = &glob_conf.pcm_name_out, |
98f9f48c | 1192 | .descr = "DAC device name (for instance dmix)" |
1193 | }, | |
1194 | { | |
1195 | .name = "ADC_DEV", | |
1196 | .tag = AUD_OPT_STR, | |
765b37da | 1197 | .valp = &glob_conf.pcm_name_in, |
98f9f48c | 1198 | .descr = "ADC device name" |
1199 | }, | |
2700efa3 | 1200 | { /* End of list */ } |
1d14ffa9 FB |
1201 | }; |
1202 | ||
35f4b58c | 1203 | static struct audio_pcm_ops alsa_pcm_ops = { |
1dd3e4d1 JQ |
1204 | .init_out = alsa_init_out, |
1205 | .fini_out = alsa_fini_out, | |
1206 | .run_out = alsa_run_out, | |
1207 | .write = alsa_write, | |
1208 | .ctl_out = alsa_ctl_out, | |
1209 | ||
1210 | .init_in = alsa_init_in, | |
1211 | .fini_in = alsa_fini_in, | |
1212 | .run_in = alsa_run_in, | |
1213 | .read = alsa_read, | |
8b438ba3 | 1214 | .ctl_in = alsa_ctl_in, |
1d14ffa9 FB |
1215 | }; |
1216 | ||
d3893a39 | 1217 | static struct audio_driver alsa_audio_driver = { |
bee37f32 JQ |
1218 | .name = "alsa", |
1219 | .descr = "ALSA http://www.alsa-project.org", | |
1220 | .options = alsa_options, | |
1221 | .init = alsa_audio_init, | |
1222 | .fini = alsa_audio_fini, | |
1223 | .pcm_ops = &alsa_pcm_ops, | |
1224 | .can_be_default = 1, | |
1225 | .max_voices_out = INT_MAX, | |
1226 | .max_voices_in = INT_MAX, | |
1227 | .voice_size_out = sizeof (ALSAVoiceOut), | |
1228 | .voice_size_in = sizeof (ALSAVoiceIn) | |
1d14ffa9 | 1229 | }; |
d3893a39 GH |
1230 | |
1231 | static void register_audio_alsa(void) | |
1232 | { | |
1233 | audio_driver_register(&alsa_audio_driver); | |
1234 | } | |
1235 | type_init(register_audio_alsa); |