1 | /* |
2 | * QEMU Audio subsystem |
3 | * |
4 | * Copyright (c) 2003-2005 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 | |
25 | #include "qemu/osdep.h" |
26 | #include "audio.h" |
27 | #include "migration/vmstate.h" |
28 | #include "monitor/monitor.h" |
29 | #include "qemu/timer.h" |
30 | #include "qapi/error.h" |
31 | #include "qapi/qobject-input-visitor.h" |
32 | #include "qapi/qapi-visit-audio.h" |
33 | #include "qemu/cutils.h" |
34 | #include "qemu/module.h" |
35 | #include "sysemu/replay.h" |
36 | #include "sysemu/runstate.h" |
37 | #include "trace.h" |
38 | |
39 | #define AUDIO_CAP "audio" |
40 | #include "audio_int.h" |
41 | |
42 | /* #define DEBUG_LIVE */ |
43 | /* #define DEBUG_OUT */ |
44 | /* #define DEBUG_CAPTURE */ |
45 | /* #define DEBUG_POLL */ |
46 | |
47 | #define SW_NAME(sw) (sw)->name ? (sw)->name : "unknown" |
48 | |
49 | |
50 | /* Order of CONFIG_AUDIO_DRIVERS is import. |
51 | The 1st one is the one used by default, that is the reason |
52 | that we generate the list. |
53 | */ |
54 | const char *audio_prio_list[] = { |
55 | "spice" , |
56 | CONFIG_AUDIO_DRIVERS |
57 | "none" , |
58 | "wav" , |
59 | NULL |
60 | }; |
61 | |
62 | static QLIST_HEAD(, audio_driver) audio_drivers; |
63 | static AudiodevListHead audiodevs = QSIMPLEQ_HEAD_INITIALIZER(audiodevs); |
64 | |
65 | void audio_driver_register(audio_driver *drv) |
66 | { |
67 | QLIST_INSERT_HEAD(&audio_drivers, drv, next); |
68 | } |
69 | |
70 | audio_driver *audio_driver_lookup(const char *name) |
71 | { |
72 | struct audio_driver *d; |
73 | |
74 | QLIST_FOREACH(d, &audio_drivers, next) { |
75 | if (strcmp(name, d->name) == 0) { |
76 | return d; |
77 | } |
78 | } |
79 | |
80 | audio_module_load_one(name); |
81 | QLIST_FOREACH(d, &audio_drivers, next) { |
82 | if (strcmp(name, d->name) == 0) { |
83 | return d; |
84 | } |
85 | } |
86 | |
87 | return NULL; |
88 | } |
89 | |
90 | static QTAILQ_HEAD(AudioStateHead, AudioState) audio_states = |
91 | QTAILQ_HEAD_INITIALIZER(audio_states); |
92 | |
93 | const struct mixeng_volume nominal_volume = { |
94 | .mute = 0, |
95 | #ifdef FLOAT_MIXENG |
96 | .r = 1.0, |
97 | .l = 1.0, |
98 | #else |
99 | .r = 1ULL << 32, |
100 | .l = 1ULL << 32, |
101 | #endif |
102 | }; |
103 | |
104 | static bool legacy_config = true; |
105 | |
106 | #ifdef AUDIO_IS_FLAWLESS_AND_NO_CHECKS_ARE_REQURIED |
107 | #error No its not |
108 | #else |
109 | int audio_bug (const char *funcname, int cond) |
110 | { |
111 | if (cond) { |
112 | static int shown; |
113 | |
114 | AUD_log (NULL, "A bug was just triggered in %s\n" , funcname); |
115 | if (!shown) { |
116 | shown = 1; |
117 | AUD_log (NULL, "Save all your work and restart without audio\n" ); |
118 | AUD_log (NULL, "I am sorry\n" ); |
119 | } |
120 | AUD_log (NULL, "Context:\n" ); |
121 | |
122 | #if defined AUDIO_BREAKPOINT_ON_BUG |
123 | # if defined HOST_I386 |
124 | # if defined __GNUC__ |
125 | __asm__ ("int3" ); |
126 | # elif defined _MSC_VER |
127 | _asm _emit 0xcc; |
128 | # else |
129 | abort (); |
130 | # endif |
131 | # else |
132 | abort (); |
133 | # endif |
134 | #endif |
135 | } |
136 | |
137 | return cond; |
138 | } |
139 | #endif |
140 | |
141 | static inline int audio_bits_to_index (int bits) |
142 | { |
143 | switch (bits) { |
144 | case 8: |
145 | return 0; |
146 | |
147 | case 16: |
148 | return 1; |
149 | |
150 | case 32: |
151 | return 2; |
152 | |
153 | default: |
154 | audio_bug ("bits_to_index" , 1); |
155 | AUD_log (NULL, "invalid bits %d\n" , bits); |
156 | return 0; |
157 | } |
158 | } |
159 | |
160 | void *audio_calloc (const char *funcname, int nmemb, size_t size) |
161 | { |
162 | int cond; |
163 | size_t len; |
164 | |
165 | len = nmemb * size; |
166 | cond = !nmemb || !size; |
167 | cond |= nmemb < 0; |
168 | cond |= len < size; |
169 | |
170 | if (audio_bug ("audio_calloc" , cond)) { |
171 | AUD_log (NULL, "%s passed invalid arguments to audio_calloc\n" , |
172 | funcname); |
173 | AUD_log (NULL, "nmemb=%d size=%zu (len=%zu)\n" , nmemb, size, len); |
174 | return NULL; |
175 | } |
176 | |
177 | return g_malloc0 (len); |
178 | } |
179 | |
180 | void AUD_vlog (const char *cap, const char *fmt, va_list ap) |
181 | { |
182 | if (cap) { |
183 | fprintf(stderr, "%s: " , cap); |
184 | } |
185 | |
186 | vfprintf(stderr, fmt, ap); |
187 | } |
188 | |
189 | void AUD_log (const char *cap, const char *fmt, ...) |
190 | { |
191 | va_list ap; |
192 | |
193 | va_start (ap, fmt); |
194 | AUD_vlog (cap, fmt, ap); |
195 | va_end (ap); |
196 | } |
197 | |
198 | static void audio_print_settings (struct audsettings *as) |
199 | { |
200 | dolog ("frequency=%d nchannels=%d fmt=" , as->freq, as->nchannels); |
201 | |
202 | switch (as->fmt) { |
203 | case AUDIO_FORMAT_S8: |
204 | AUD_log (NULL, "S8" ); |
205 | break; |
206 | case AUDIO_FORMAT_U8: |
207 | AUD_log (NULL, "U8" ); |
208 | break; |
209 | case AUDIO_FORMAT_S16: |
210 | AUD_log (NULL, "S16" ); |
211 | break; |
212 | case AUDIO_FORMAT_U16: |
213 | AUD_log (NULL, "U16" ); |
214 | break; |
215 | case AUDIO_FORMAT_S32: |
216 | AUD_log (NULL, "S32" ); |
217 | break; |
218 | case AUDIO_FORMAT_U32: |
219 | AUD_log (NULL, "U32" ); |
220 | break; |
221 | default: |
222 | AUD_log (NULL, "invalid(%d)" , as->fmt); |
223 | break; |
224 | } |
225 | |
226 | AUD_log (NULL, " endianness=" ); |
227 | switch (as->endianness) { |
228 | case 0: |
229 | AUD_log (NULL, "little" ); |
230 | break; |
231 | case 1: |
232 | AUD_log (NULL, "big" ); |
233 | break; |
234 | default: |
235 | AUD_log (NULL, "invalid" ); |
236 | break; |
237 | } |
238 | AUD_log (NULL, "\n" ); |
239 | } |
240 | |
241 | static int audio_validate_settings (struct audsettings *as) |
242 | { |
243 | int invalid; |
244 | |
245 | invalid = as->nchannels != 1 && as->nchannels != 2; |
246 | invalid |= as->endianness != 0 && as->endianness != 1; |
247 | |
248 | switch (as->fmt) { |
249 | case AUDIO_FORMAT_S8: |
250 | case AUDIO_FORMAT_U8: |
251 | case AUDIO_FORMAT_S16: |
252 | case AUDIO_FORMAT_U16: |
253 | case AUDIO_FORMAT_S32: |
254 | case AUDIO_FORMAT_U32: |
255 | break; |
256 | default: |
257 | invalid = 1; |
258 | break; |
259 | } |
260 | |
261 | invalid |= as->freq <= 0; |
262 | return invalid ? -1 : 0; |
263 | } |
264 | |
265 | static int audio_pcm_info_eq (struct audio_pcm_info *info, struct audsettings *as) |
266 | { |
267 | int bits = 8, sign = 0; |
268 | |
269 | switch (as->fmt) { |
270 | case AUDIO_FORMAT_S8: |
271 | sign = 1; |
272 | /* fall through */ |
273 | case AUDIO_FORMAT_U8: |
274 | break; |
275 | |
276 | case AUDIO_FORMAT_S16: |
277 | sign = 1; |
278 | /* fall through */ |
279 | case AUDIO_FORMAT_U16: |
280 | bits = 16; |
281 | break; |
282 | |
283 | case AUDIO_FORMAT_S32: |
284 | sign = 1; |
285 | /* fall through */ |
286 | case AUDIO_FORMAT_U32: |
287 | bits = 32; |
288 | break; |
289 | |
290 | default: |
291 | abort(); |
292 | } |
293 | return info->freq == as->freq |
294 | && info->nchannels == as->nchannels |
295 | && info->sign == sign |
296 | && info->bits == bits |
297 | && info->swap_endianness == (as->endianness != AUDIO_HOST_ENDIANNESS); |
298 | } |
299 | |
300 | void audio_pcm_init_info (struct audio_pcm_info *info, struct audsettings *as) |
301 | { |
302 | int bits = 8, sign = 0, shift = 0; |
303 | |
304 | switch (as->fmt) { |
305 | case AUDIO_FORMAT_S8: |
306 | sign = 1; |
307 | case AUDIO_FORMAT_U8: |
308 | break; |
309 | |
310 | case AUDIO_FORMAT_S16: |
311 | sign = 1; |
312 | /* fall through */ |
313 | case AUDIO_FORMAT_U16: |
314 | bits = 16; |
315 | shift = 1; |
316 | break; |
317 | |
318 | case AUDIO_FORMAT_S32: |
319 | sign = 1; |
320 | /* fall through */ |
321 | case AUDIO_FORMAT_U32: |
322 | bits = 32; |
323 | shift = 2; |
324 | break; |
325 | |
326 | default: |
327 | abort(); |
328 | } |
329 | |
330 | info->freq = as->freq; |
331 | info->bits = bits; |
332 | info->sign = sign; |
333 | info->nchannels = as->nchannels; |
334 | info->shift = (as->nchannels == 2) + shift; |
335 | info->align = (1 << info->shift) - 1; |
336 | info->bytes_per_second = info->freq << info->shift; |
337 | info->swap_endianness = (as->endianness != AUDIO_HOST_ENDIANNESS); |
338 | } |
339 | |
340 | void audio_pcm_info_clear_buf (struct audio_pcm_info *info, void *buf, int len) |
341 | { |
342 | if (!len) { |
343 | return; |
344 | } |
345 | |
346 | if (info->sign) { |
347 | memset (buf, 0x00, len << info->shift); |
348 | } |
349 | else { |
350 | switch (info->bits) { |
351 | case 8: |
352 | memset (buf, 0x80, len << info->shift); |
353 | break; |
354 | |
355 | case 16: |
356 | { |
357 | int i; |
358 | uint16_t *p = buf; |
359 | int shift = info->nchannels - 1; |
360 | short s = INT16_MAX; |
361 | |
362 | if (info->swap_endianness) { |
363 | s = bswap16 (s); |
364 | } |
365 | |
366 | for (i = 0; i < len << shift; i++) { |
367 | p[i] = s; |
368 | } |
369 | } |
370 | break; |
371 | |
372 | case 32: |
373 | { |
374 | int i; |
375 | uint32_t *p = buf; |
376 | int shift = info->nchannels - 1; |
377 | int32_t s = INT32_MAX; |
378 | |
379 | if (info->swap_endianness) { |
380 | s = bswap32 (s); |
381 | } |
382 | |
383 | for (i = 0; i < len << shift; i++) { |
384 | p[i] = s; |
385 | } |
386 | } |
387 | break; |
388 | |
389 | default: |
390 | AUD_log (NULL, "audio_pcm_info_clear_buf: invalid bits %d\n" , |
391 | info->bits); |
392 | break; |
393 | } |
394 | } |
395 | } |
396 | |
397 | /* |
398 | * Capture |
399 | */ |
400 | static void noop_conv (struct st_sample *dst, const void *src, int samples) |
401 | { |
402 | (void) src; |
403 | (void) dst; |
404 | (void) samples; |
405 | } |
406 | |
407 | static CaptureVoiceOut *audio_pcm_capture_find_specific(AudioState *s, |
408 | struct audsettings *as) |
409 | { |
410 | CaptureVoiceOut *cap; |
411 | |
412 | for (cap = s->cap_head.lh_first; cap; cap = cap->entries.le_next) { |
413 | if (audio_pcm_info_eq (&cap->hw.info, as)) { |
414 | return cap; |
415 | } |
416 | } |
417 | return NULL; |
418 | } |
419 | |
420 | static void audio_notify_capture (CaptureVoiceOut *cap, audcnotification_e cmd) |
421 | { |
422 | struct capture_callback *cb; |
423 | |
424 | #ifdef DEBUG_CAPTURE |
425 | dolog ("notification %d sent\n" , cmd); |
426 | #endif |
427 | for (cb = cap->cb_head.lh_first; cb; cb = cb->entries.le_next) { |
428 | cb->ops.notify (cb->opaque, cmd); |
429 | } |
430 | } |
431 | |
432 | static void audio_capture_maybe_changed (CaptureVoiceOut *cap, int enabled) |
433 | { |
434 | if (cap->hw.enabled != enabled) { |
435 | audcnotification_e cmd; |
436 | cap->hw.enabled = enabled; |
437 | cmd = enabled ? AUD_CNOTIFY_ENABLE : AUD_CNOTIFY_DISABLE; |
438 | audio_notify_capture (cap, cmd); |
439 | } |
440 | } |
441 | |
442 | static void audio_recalc_and_notify_capture (CaptureVoiceOut *cap) |
443 | { |
444 | HWVoiceOut *hw = &cap->hw; |
445 | SWVoiceOut *sw; |
446 | int enabled = 0; |
447 | |
448 | for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) { |
449 | if (sw->active) { |
450 | enabled = 1; |
451 | break; |
452 | } |
453 | } |
454 | audio_capture_maybe_changed (cap, enabled); |
455 | } |
456 | |
457 | static void audio_detach_capture (HWVoiceOut *hw) |
458 | { |
459 | SWVoiceCap *sc = hw->cap_head.lh_first; |
460 | |
461 | while (sc) { |
462 | SWVoiceCap *sc1 = sc->entries.le_next; |
463 | SWVoiceOut *sw = &sc->sw; |
464 | CaptureVoiceOut *cap = sc->cap; |
465 | int was_active = sw->active; |
466 | |
467 | if (sw->rate) { |
468 | st_rate_stop (sw->rate); |
469 | sw->rate = NULL; |
470 | } |
471 | |
472 | QLIST_REMOVE (sw, entries); |
473 | QLIST_REMOVE (sc, entries); |
474 | g_free (sc); |
475 | if (was_active) { |
476 | /* We have removed soft voice from the capture: |
477 | this might have changed the overall status of the capture |
478 | since this might have been the only active voice */ |
479 | audio_recalc_and_notify_capture (cap); |
480 | } |
481 | sc = sc1; |
482 | } |
483 | } |
484 | |
485 | static int audio_attach_capture (HWVoiceOut *hw) |
486 | { |
487 | AudioState *s = hw->s; |
488 | CaptureVoiceOut *cap; |
489 | |
490 | audio_detach_capture (hw); |
491 | for (cap = s->cap_head.lh_first; cap; cap = cap->entries.le_next) { |
492 | SWVoiceCap *sc; |
493 | SWVoiceOut *sw; |
494 | HWVoiceOut *hw_cap = &cap->hw; |
495 | |
496 | sc = g_malloc0(sizeof(*sc)); |
497 | |
498 | sc->cap = cap; |
499 | sw = &sc->sw; |
500 | sw->hw = hw_cap; |
501 | sw->info = hw->info; |
502 | sw->empty = 1; |
503 | sw->active = hw->enabled; |
504 | sw->conv = noop_conv; |
505 | sw->ratio = ((int64_t) hw_cap->info.freq << 32) / sw->info.freq; |
506 | sw->vol = nominal_volume; |
507 | sw->rate = st_rate_start (sw->info.freq, hw_cap->info.freq); |
508 | if (!sw->rate) { |
509 | dolog ("Could not start rate conversion for `%s'\n" , SW_NAME (sw)); |
510 | g_free (sw); |
511 | return -1; |
512 | } |
513 | QLIST_INSERT_HEAD (&hw_cap->sw_head, sw, entries); |
514 | QLIST_INSERT_HEAD (&hw->cap_head, sc, entries); |
515 | #ifdef DEBUG_CAPTURE |
516 | sw->name = g_strdup_printf ("for %p %d,%d,%d" , |
517 | hw, sw->info.freq, sw->info.bits, |
518 | sw->info.nchannels); |
519 | dolog ("Added %s active = %d\n" , sw->name, sw->active); |
520 | #endif |
521 | if (sw->active) { |
522 | audio_capture_maybe_changed (cap, 1); |
523 | } |
524 | } |
525 | return 0; |
526 | } |
527 | |
528 | /* |
529 | * Hard voice (capture) |
530 | */ |
531 | static size_t audio_pcm_hw_find_min_in (HWVoiceIn *hw) |
532 | { |
533 | SWVoiceIn *sw; |
534 | size_t m = hw->total_samples_captured; |
535 | |
536 | for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) { |
537 | if (sw->active) { |
538 | m = MIN (m, sw->total_hw_samples_acquired); |
539 | } |
540 | } |
541 | return m; |
542 | } |
543 | |
544 | size_t audio_pcm_hw_get_live_in(HWVoiceIn *hw) |
545 | { |
546 | size_t live = hw->total_samples_captured - audio_pcm_hw_find_min_in (hw); |
547 | if (audio_bug(__func__, live > hw->samples)) { |
548 | dolog("live=%zu hw->samples=%zu\n" , live, hw->samples); |
549 | return 0; |
550 | } |
551 | return live; |
552 | } |
553 | |
554 | size_t audio_pcm_hw_clip_out(HWVoiceOut *hw, void *pcm_buf, |
555 | size_t live, size_t pending) |
556 | { |
557 | size_t left = hw->samples - pending; |
558 | size_t len = MIN (left, live); |
559 | size_t clipped = 0; |
560 | |
561 | while (len) { |
562 | struct st_sample *src = hw->mix_buf + hw->rpos; |
563 | uint8_t *dst = advance (pcm_buf, hw->rpos << hw->info.shift); |
564 | size_t samples_till_end_of_buf = hw->samples - hw->rpos; |
565 | size_t samples_to_clip = MIN (len, samples_till_end_of_buf); |
566 | |
567 | hw->clip (dst, src, samples_to_clip); |
568 | |
569 | hw->rpos = (hw->rpos + samples_to_clip) % hw->samples; |
570 | len -= samples_to_clip; |
571 | clipped += samples_to_clip; |
572 | } |
573 | return clipped; |
574 | } |
575 | |
576 | /* |
577 | * Soft voice (capture) |
578 | */ |
579 | static size_t audio_pcm_sw_get_rpos_in(SWVoiceIn *sw) |
580 | { |
581 | HWVoiceIn *hw = sw->hw; |
582 | ssize_t live = hw->total_samples_captured - sw->total_hw_samples_acquired; |
583 | ssize_t rpos; |
584 | |
585 | if (audio_bug(__func__, live < 0 || live > hw->samples)) { |
586 | dolog("live=%zu hw->samples=%zu\n" , live, hw->samples); |
587 | return 0; |
588 | } |
589 | |
590 | rpos = hw->wpos - live; |
591 | if (rpos >= 0) { |
592 | return rpos; |
593 | } |
594 | else { |
595 | return hw->samples + rpos; |
596 | } |
597 | } |
598 | |
599 | static size_t audio_pcm_sw_read(SWVoiceIn *sw, void *buf, size_t size) |
600 | { |
601 | HWVoiceIn *hw = sw->hw; |
602 | size_t samples, live, ret = 0, swlim, isamp, osamp, rpos, total = 0; |
603 | struct st_sample *src, *dst = sw->buf; |
604 | |
605 | rpos = audio_pcm_sw_get_rpos_in (sw) % hw->samples; |
606 | |
607 | live = hw->total_samples_captured - sw->total_hw_samples_acquired; |
608 | if (audio_bug(__func__, live > hw->samples)) { |
609 | dolog("live_in=%zu hw->samples=%zu\n" , live, hw->samples); |
610 | return 0; |
611 | } |
612 | |
613 | samples = size >> sw->info.shift; |
614 | if (!live) { |
615 | return 0; |
616 | } |
617 | |
618 | swlim = (live * sw->ratio) >> 32; |
619 | swlim = MIN (swlim, samples); |
620 | |
621 | while (swlim) { |
622 | src = hw->conv_buf + rpos; |
623 | if (hw->wpos > rpos) { |
624 | isamp = hw->wpos - rpos; |
625 | } else { |
626 | isamp = hw->samples - rpos; |
627 | } |
628 | |
629 | if (!isamp) { |
630 | break; |
631 | } |
632 | osamp = swlim; |
633 | |
634 | st_rate_flow (sw->rate, src, dst, &isamp, &osamp); |
635 | swlim -= osamp; |
636 | rpos = (rpos + isamp) % hw->samples; |
637 | dst += osamp; |
638 | ret += osamp; |
639 | total += isamp; |
640 | } |
641 | |
642 | if (!(hw->ctl_caps & VOICE_VOLUME_CAP)) { |
643 | mixeng_volume (sw->buf, ret, &sw->vol); |
644 | } |
645 | |
646 | sw->clip (buf, sw->buf, ret); |
647 | sw->total_hw_samples_acquired += total; |
648 | return ret << sw->info.shift; |
649 | } |
650 | |
651 | /* |
652 | * Hard voice (playback) |
653 | */ |
654 | static size_t audio_pcm_hw_find_min_out (HWVoiceOut *hw, int *nb_livep) |
655 | { |
656 | SWVoiceOut *sw; |
657 | size_t m = SIZE_MAX; |
658 | int nb_live = 0; |
659 | |
660 | for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) { |
661 | if (sw->active || !sw->empty) { |
662 | m = MIN (m, sw->total_hw_samples_mixed); |
663 | nb_live += 1; |
664 | } |
665 | } |
666 | |
667 | *nb_livep = nb_live; |
668 | return m; |
669 | } |
670 | |
671 | static size_t audio_pcm_hw_get_live_out (HWVoiceOut *hw, int *nb_live) |
672 | { |
673 | size_t smin; |
674 | int nb_live1; |
675 | |
676 | smin = audio_pcm_hw_find_min_out (hw, &nb_live1); |
677 | if (nb_live) { |
678 | *nb_live = nb_live1; |
679 | } |
680 | |
681 | if (nb_live1) { |
682 | size_t live = smin; |
683 | |
684 | if (audio_bug(__func__, live > hw->samples)) { |
685 | dolog("live=%zu hw->samples=%zu\n" , live, hw->samples); |
686 | return 0; |
687 | } |
688 | return live; |
689 | } |
690 | return 0; |
691 | } |
692 | |
693 | /* |
694 | * Soft voice (playback) |
695 | */ |
696 | static size_t audio_pcm_sw_write(SWVoiceOut *sw, void *buf, size_t size) |
697 | { |
698 | size_t hwsamples, samples, isamp, osamp, wpos, live, dead, left, swlim, blck; |
699 | size_t ret = 0, pos = 0, total = 0; |
700 | |
701 | if (!sw) { |
702 | return size; |
703 | } |
704 | |
705 | hwsamples = sw->hw->samples; |
706 | |
707 | live = sw->total_hw_samples_mixed; |
708 | if (audio_bug(__func__, live > hwsamples)) { |
709 | dolog("live=%zu hw->samples=%zu\n" , live, hwsamples); |
710 | return 0; |
711 | } |
712 | |
713 | if (live == hwsamples) { |
714 | #ifdef DEBUG_OUT |
715 | dolog ("%s is full %d\n" , sw->name, live); |
716 | #endif |
717 | return 0; |
718 | } |
719 | |
720 | wpos = (sw->hw->rpos + live) % hwsamples; |
721 | samples = size >> sw->info.shift; |
722 | |
723 | dead = hwsamples - live; |
724 | swlim = ((int64_t) dead << 32) / sw->ratio; |
725 | swlim = MIN (swlim, samples); |
726 | if (swlim) { |
727 | sw->conv (sw->buf, buf, swlim); |
728 | |
729 | if (!(sw->hw->ctl_caps & VOICE_VOLUME_CAP)) { |
730 | mixeng_volume (sw->buf, swlim, &sw->vol); |
731 | } |
732 | } |
733 | |
734 | while (swlim) { |
735 | dead = hwsamples - live; |
736 | left = hwsamples - wpos; |
737 | blck = MIN (dead, left); |
738 | if (!blck) { |
739 | break; |
740 | } |
741 | isamp = swlim; |
742 | osamp = blck; |
743 | st_rate_flow_mix ( |
744 | sw->rate, |
745 | sw->buf + pos, |
746 | sw->hw->mix_buf + wpos, |
747 | &isamp, |
748 | &osamp |
749 | ); |
750 | ret += isamp; |
751 | swlim -= isamp; |
752 | pos += isamp; |
753 | live += osamp; |
754 | wpos = (wpos + osamp) % hwsamples; |
755 | total += osamp; |
756 | } |
757 | |
758 | sw->total_hw_samples_mixed += total; |
759 | sw->empty = sw->total_hw_samples_mixed == 0; |
760 | |
761 | #ifdef DEBUG_OUT |
762 | dolog ( |
763 | "%s: write size %zu ret %zu total sw %zu\n" , |
764 | SW_NAME (sw), |
765 | size >> sw->info.shift, |
766 | ret, |
767 | sw->total_hw_samples_mixed |
768 | ); |
769 | #endif |
770 | |
771 | return ret << sw->info.shift; |
772 | } |
773 | |
774 | #ifdef DEBUG_AUDIO |
775 | static void audio_pcm_print_info (const char *cap, struct audio_pcm_info *info) |
776 | { |
777 | dolog ("%s: bits %d, sign %d, freq %d, nchan %d\n" , |
778 | cap, info->bits, info->sign, info->freq, info->nchannels); |
779 | } |
780 | #endif |
781 | |
782 | #define DAC |
783 | #include "audio_template.h" |
784 | #undef DAC |
785 | #include "audio_template.h" |
786 | |
787 | /* |
788 | * Timer |
789 | */ |
790 | static int audio_is_timer_needed(AudioState *s) |
791 | { |
792 | HWVoiceIn *hwi = NULL; |
793 | HWVoiceOut *hwo = NULL; |
794 | |
795 | while ((hwo = audio_pcm_hw_find_any_enabled_out(s, hwo))) { |
796 | if (!hwo->poll_mode) return 1; |
797 | } |
798 | while ((hwi = audio_pcm_hw_find_any_enabled_in(s, hwi))) { |
799 | if (!hwi->poll_mode) return 1; |
800 | } |
801 | return 0; |
802 | } |
803 | |
804 | static void audio_reset_timer (AudioState *s) |
805 | { |
806 | if (audio_is_timer_needed(s)) { |
807 | timer_mod_anticipate_ns(s->ts, |
808 | qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) + s->period_ticks); |
809 | if (!s->timer_running) { |
810 | s->timer_running = true; |
811 | s->timer_last = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL); |
812 | trace_audio_timer_start(s->period_ticks / SCALE_MS); |
813 | } |
814 | } else { |
815 | timer_del(s->ts); |
816 | if (s->timer_running) { |
817 | s->timer_running = false; |
818 | trace_audio_timer_stop(); |
819 | } |
820 | } |
821 | } |
822 | |
823 | static void audio_timer (void *opaque) |
824 | { |
825 | int64_t now, diff; |
826 | AudioState *s = opaque; |
827 | |
828 | now = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL); |
829 | diff = now - s->timer_last; |
830 | if (diff > s->period_ticks * 3 / 2) { |
831 | trace_audio_timer_delayed(diff / SCALE_MS); |
832 | } |
833 | s->timer_last = now; |
834 | |
835 | audio_run(s, "timer" ); |
836 | audio_reset_timer(s); |
837 | } |
838 | |
839 | /* |
840 | * Public API |
841 | */ |
842 | size_t AUD_write(SWVoiceOut *sw, void *buf, size_t size) |
843 | { |
844 | if (!sw) { |
845 | /* XXX: Consider options */ |
846 | return size; |
847 | } |
848 | |
849 | if (!sw->hw->enabled) { |
850 | dolog ("Writing to disabled voice %s\n" , SW_NAME (sw)); |
851 | return 0; |
852 | } |
853 | |
854 | return audio_pcm_sw_write(sw, buf, size); |
855 | } |
856 | |
857 | size_t AUD_read(SWVoiceIn *sw, void *buf, size_t size) |
858 | { |
859 | if (!sw) { |
860 | /* XXX: Consider options */ |
861 | return size; |
862 | } |
863 | |
864 | if (!sw->hw->enabled) { |
865 | dolog ("Reading from disabled voice %s\n" , SW_NAME (sw)); |
866 | return 0; |
867 | } |
868 | |
869 | return audio_pcm_sw_read(sw, buf, size); |
870 | } |
871 | |
872 | int AUD_get_buffer_size_out (SWVoiceOut *sw) |
873 | { |
874 | return sw->hw->samples << sw->hw->info.shift; |
875 | } |
876 | |
877 | void AUD_set_active_out (SWVoiceOut *sw, int on) |
878 | { |
879 | HWVoiceOut *hw; |
880 | |
881 | if (!sw) { |
882 | return; |
883 | } |
884 | |
885 | hw = sw->hw; |
886 | if (sw->active != on) { |
887 | AudioState *s = sw->s; |
888 | SWVoiceOut *temp_sw; |
889 | SWVoiceCap *sc; |
890 | |
891 | if (on) { |
892 | hw->pending_disable = 0; |
893 | if (!hw->enabled) { |
894 | hw->enabled = 1; |
895 | if (s->vm_running) { |
896 | hw->pcm_ops->ctl_out(hw, VOICE_ENABLE); |
897 | audio_reset_timer (s); |
898 | } |
899 | } |
900 | } |
901 | else { |
902 | if (hw->enabled) { |
903 | int nb_active = 0; |
904 | |
905 | for (temp_sw = hw->sw_head.lh_first; temp_sw; |
906 | temp_sw = temp_sw->entries.le_next) { |
907 | nb_active += temp_sw->active != 0; |
908 | } |
909 | |
910 | hw->pending_disable = nb_active == 1; |
911 | } |
912 | } |
913 | |
914 | for (sc = hw->cap_head.lh_first; sc; sc = sc->entries.le_next) { |
915 | sc->sw.active = hw->enabled; |
916 | if (hw->enabled) { |
917 | audio_capture_maybe_changed (sc->cap, 1); |
918 | } |
919 | } |
920 | sw->active = on; |
921 | } |
922 | } |
923 | |
924 | void AUD_set_active_in (SWVoiceIn *sw, int on) |
925 | { |
926 | HWVoiceIn *hw; |
927 | |
928 | if (!sw) { |
929 | return; |
930 | } |
931 | |
932 | hw = sw->hw; |
933 | if (sw->active != on) { |
934 | AudioState *s = sw->s; |
935 | SWVoiceIn *temp_sw; |
936 | |
937 | if (on) { |
938 | if (!hw->enabled) { |
939 | hw->enabled = 1; |
940 | if (s->vm_running) { |
941 | hw->pcm_ops->ctl_in(hw, VOICE_ENABLE); |
942 | audio_reset_timer (s); |
943 | } |
944 | } |
945 | sw->total_hw_samples_acquired = hw->total_samples_captured; |
946 | } |
947 | else { |
948 | if (hw->enabled) { |
949 | int nb_active = 0; |
950 | |
951 | for (temp_sw = hw->sw_head.lh_first; temp_sw; |
952 | temp_sw = temp_sw->entries.le_next) { |
953 | nb_active += temp_sw->active != 0; |
954 | } |
955 | |
956 | if (nb_active == 1) { |
957 | hw->enabled = 0; |
958 | hw->pcm_ops->ctl_in (hw, VOICE_DISABLE); |
959 | } |
960 | } |
961 | } |
962 | sw->active = on; |
963 | } |
964 | } |
965 | |
966 | static size_t audio_get_avail (SWVoiceIn *sw) |
967 | { |
968 | size_t live; |
969 | |
970 | if (!sw) { |
971 | return 0; |
972 | } |
973 | |
974 | live = sw->hw->total_samples_captured - sw->total_hw_samples_acquired; |
975 | if (audio_bug(__func__, live > sw->hw->samples)) { |
976 | dolog("live=%zu sw->hw->samples=%zu\n" , live, sw->hw->samples); |
977 | return 0; |
978 | } |
979 | |
980 | ldebug ( |
981 | "%s: get_avail live %d ret %" PRId64 "\n" , |
982 | SW_NAME (sw), |
983 | live, (((int64_t) live << 32) / sw->ratio) << sw->info.shift |
984 | ); |
985 | |
986 | return (((int64_t) live << 32) / sw->ratio) << sw->info.shift; |
987 | } |
988 | |
989 | static size_t audio_get_free(SWVoiceOut *sw) |
990 | { |
991 | size_t live, dead; |
992 | |
993 | if (!sw) { |
994 | return 0; |
995 | } |
996 | |
997 | live = sw->total_hw_samples_mixed; |
998 | |
999 | if (audio_bug(__func__, live > sw->hw->samples)) { |
1000 | dolog("live=%zu sw->hw->samples=%zu\n" , live, sw->hw->samples); |
1001 | return 0; |
1002 | } |
1003 | |
1004 | dead = sw->hw->samples - live; |
1005 | |
1006 | #ifdef DEBUG_OUT |
1007 | dolog ("%s: get_free live %d dead %d ret %" PRId64 "\n" , |
1008 | SW_NAME (sw), |
1009 | live, dead, (((int64_t) dead << 32) / sw->ratio) << sw->info.shift); |
1010 | #endif |
1011 | |
1012 | return (((int64_t) dead << 32) / sw->ratio) << sw->info.shift; |
1013 | } |
1014 | |
1015 | static void audio_capture_mix_and_clear(HWVoiceOut *hw, size_t rpos, |
1016 | size_t samples) |
1017 | { |
1018 | size_t n; |
1019 | |
1020 | if (hw->enabled) { |
1021 | SWVoiceCap *sc; |
1022 | |
1023 | for (sc = hw->cap_head.lh_first; sc; sc = sc->entries.le_next) { |
1024 | SWVoiceOut *sw = &sc->sw; |
1025 | int rpos2 = rpos; |
1026 | |
1027 | n = samples; |
1028 | while (n) { |
1029 | size_t till_end_of_hw = hw->samples - rpos2; |
1030 | size_t to_write = MIN(till_end_of_hw, n); |
1031 | size_t bytes = to_write << hw->info.shift; |
1032 | size_t written; |
1033 | |
1034 | sw->buf = hw->mix_buf + rpos2; |
1035 | written = audio_pcm_sw_write (sw, NULL, bytes); |
1036 | if (written - bytes) { |
1037 | dolog("Could not mix %zu bytes into a capture " |
1038 | "buffer, mixed %zu\n" , |
1039 | bytes, written); |
1040 | break; |
1041 | } |
1042 | n -= to_write; |
1043 | rpos2 = (rpos2 + to_write) % hw->samples; |
1044 | } |
1045 | } |
1046 | } |
1047 | |
1048 | n = MIN(samples, hw->samples - rpos); |
1049 | mixeng_clear(hw->mix_buf + rpos, n); |
1050 | mixeng_clear(hw->mix_buf, samples - n); |
1051 | } |
1052 | |
1053 | static void audio_run_out (AudioState *s) |
1054 | { |
1055 | HWVoiceOut *hw = NULL; |
1056 | SWVoiceOut *sw; |
1057 | |
1058 | while ((hw = audio_pcm_hw_find_any_enabled_out(s, hw))) { |
1059 | size_t played, live, prev_rpos, free; |
1060 | int nb_live, cleanup_required; |
1061 | |
1062 | live = audio_pcm_hw_get_live_out (hw, &nb_live); |
1063 | if (!nb_live) { |
1064 | live = 0; |
1065 | } |
1066 | |
1067 | if (audio_bug(__func__, live > hw->samples)) { |
1068 | dolog ("live=%zu hw->samples=%zu\n" , live, hw->samples); |
1069 | continue; |
1070 | } |
1071 | |
1072 | if (hw->pending_disable && !nb_live) { |
1073 | SWVoiceCap *sc; |
1074 | #ifdef DEBUG_OUT |
1075 | dolog ("Disabling voice\n" ); |
1076 | #endif |
1077 | hw->enabled = 0; |
1078 | hw->pending_disable = 0; |
1079 | hw->pcm_ops->ctl_out (hw, VOICE_DISABLE); |
1080 | for (sc = hw->cap_head.lh_first; sc; sc = sc->entries.le_next) { |
1081 | sc->sw.active = 0; |
1082 | audio_recalc_and_notify_capture (sc->cap); |
1083 | } |
1084 | continue; |
1085 | } |
1086 | |
1087 | if (!live) { |
1088 | for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) { |
1089 | if (sw->active) { |
1090 | free = audio_get_free (sw); |
1091 | if (free > 0) { |
1092 | sw->callback.fn (sw->callback.opaque, free); |
1093 | } |
1094 | } |
1095 | } |
1096 | continue; |
1097 | } |
1098 | |
1099 | prev_rpos = hw->rpos; |
1100 | played = hw->pcm_ops->run_out (hw, live); |
1101 | replay_audio_out(&played); |
1102 | if (audio_bug(__func__, hw->rpos >= hw->samples)) { |
1103 | dolog("hw->rpos=%zu hw->samples=%zu played=%zu\n" , |
1104 | hw->rpos, hw->samples, played); |
1105 | hw->rpos = 0; |
1106 | } |
1107 | |
1108 | #ifdef DEBUG_OUT |
1109 | dolog("played=%zu\n" , played); |
1110 | #endif |
1111 | |
1112 | if (played) { |
1113 | hw->ts_helper += played; |
1114 | audio_capture_mix_and_clear (hw, prev_rpos, played); |
1115 | } |
1116 | |
1117 | cleanup_required = 0; |
1118 | for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) { |
1119 | if (!sw->active && sw->empty) { |
1120 | continue; |
1121 | } |
1122 | |
1123 | if (audio_bug(__func__, played > sw->total_hw_samples_mixed)) { |
1124 | dolog("played=%zu sw->total_hw_samples_mixed=%zu\n" , |
1125 | played, sw->total_hw_samples_mixed); |
1126 | played = sw->total_hw_samples_mixed; |
1127 | } |
1128 | |
1129 | sw->total_hw_samples_mixed -= played; |
1130 | |
1131 | if (!sw->total_hw_samples_mixed) { |
1132 | sw->empty = 1; |
1133 | cleanup_required |= !sw->active && !sw->callback.fn; |
1134 | } |
1135 | |
1136 | if (sw->active) { |
1137 | free = audio_get_free (sw); |
1138 | if (free > 0) { |
1139 | sw->callback.fn (sw->callback.opaque, free); |
1140 | } |
1141 | } |
1142 | } |
1143 | |
1144 | if (cleanup_required) { |
1145 | SWVoiceOut *sw1; |
1146 | |
1147 | sw = hw->sw_head.lh_first; |
1148 | while (sw) { |
1149 | sw1 = sw->entries.le_next; |
1150 | if (!sw->active && !sw->callback.fn) { |
1151 | audio_close_out (sw); |
1152 | } |
1153 | sw = sw1; |
1154 | } |
1155 | } |
1156 | } |
1157 | } |
1158 | |
1159 | static void audio_run_in (AudioState *s) |
1160 | { |
1161 | HWVoiceIn *hw = NULL; |
1162 | |
1163 | while ((hw = audio_pcm_hw_find_any_enabled_in(s, hw))) { |
1164 | SWVoiceIn *sw; |
1165 | size_t captured = 0, min; |
1166 | |
1167 | if (replay_mode != REPLAY_MODE_PLAY) { |
1168 | captured = hw->pcm_ops->run_in(hw); |
1169 | } |
1170 | replay_audio_in(&captured, hw->conv_buf, &hw->wpos, hw->samples); |
1171 | |
1172 | min = audio_pcm_hw_find_min_in (hw); |
1173 | hw->total_samples_captured += captured - min; |
1174 | hw->ts_helper += captured; |
1175 | |
1176 | for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) { |
1177 | sw->total_hw_samples_acquired -= min; |
1178 | |
1179 | if (sw->active) { |
1180 | size_t avail; |
1181 | |
1182 | avail = audio_get_avail (sw); |
1183 | if (avail > 0) { |
1184 | sw->callback.fn (sw->callback.opaque, avail); |
1185 | } |
1186 | } |
1187 | } |
1188 | } |
1189 | } |
1190 | |
1191 | static void audio_run_capture (AudioState *s) |
1192 | { |
1193 | CaptureVoiceOut *cap; |
1194 | |
1195 | for (cap = s->cap_head.lh_first; cap; cap = cap->entries.le_next) { |
1196 | size_t live, rpos, captured; |
1197 | HWVoiceOut *hw = &cap->hw; |
1198 | SWVoiceOut *sw; |
1199 | |
1200 | captured = live = audio_pcm_hw_get_live_out (hw, NULL); |
1201 | rpos = hw->rpos; |
1202 | while (live) { |
1203 | size_t left = hw->samples - rpos; |
1204 | size_t to_capture = MIN(live, left); |
1205 | struct st_sample *src; |
1206 | struct capture_callback *cb; |
1207 | |
1208 | src = hw->mix_buf + rpos; |
1209 | hw->clip (cap->buf, src, to_capture); |
1210 | mixeng_clear (src, to_capture); |
1211 | |
1212 | for (cb = cap->cb_head.lh_first; cb; cb = cb->entries.le_next) { |
1213 | cb->ops.capture (cb->opaque, cap->buf, |
1214 | to_capture << hw->info.shift); |
1215 | } |
1216 | rpos = (rpos + to_capture) % hw->samples; |
1217 | live -= to_capture; |
1218 | } |
1219 | hw->rpos = rpos; |
1220 | |
1221 | for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) { |
1222 | if (!sw->active && sw->empty) { |
1223 | continue; |
1224 | } |
1225 | |
1226 | if (audio_bug(__func__, captured > sw->total_hw_samples_mixed)) { |
1227 | dolog("captured=%zu sw->total_hw_samples_mixed=%zu\n" , |
1228 | captured, sw->total_hw_samples_mixed); |
1229 | captured = sw->total_hw_samples_mixed; |
1230 | } |
1231 | |
1232 | sw->total_hw_samples_mixed -= captured; |
1233 | sw->empty = sw->total_hw_samples_mixed == 0; |
1234 | } |
1235 | } |
1236 | } |
1237 | |
1238 | void audio_run(AudioState *s, const char *msg) |
1239 | { |
1240 | audio_run_out(s); |
1241 | audio_run_in(s); |
1242 | audio_run_capture(s); |
1243 | |
1244 | #ifdef DEBUG_POLL |
1245 | { |
1246 | static double prevtime; |
1247 | double currtime; |
1248 | struct timeval tv; |
1249 | |
1250 | if (gettimeofday (&tv, NULL)) { |
1251 | perror ("audio_run: gettimeofday" ); |
1252 | return; |
1253 | } |
1254 | |
1255 | currtime = tv.tv_sec + tv.tv_usec * 1e-6; |
1256 | dolog ("Elapsed since last %s: %f\n" , msg, currtime - prevtime); |
1257 | prevtime = currtime; |
1258 | } |
1259 | #endif |
1260 | } |
1261 | |
1262 | static int audio_driver_init(AudioState *s, struct audio_driver *drv, |
1263 | bool msg, Audiodev *dev) |
1264 | { |
1265 | s->drv_opaque = drv->init(dev); |
1266 | |
1267 | if (s->drv_opaque) { |
1268 | audio_init_nb_voices_out(s, drv); |
1269 | audio_init_nb_voices_in(s, drv); |
1270 | s->drv = drv; |
1271 | return 0; |
1272 | } |
1273 | else { |
1274 | if (msg) { |
1275 | dolog("Could not init `%s' audio driver\n" , drv->name); |
1276 | } |
1277 | return -1; |
1278 | } |
1279 | } |
1280 | |
1281 | static void audio_vm_change_state_handler (void *opaque, int running, |
1282 | RunState state) |
1283 | { |
1284 | AudioState *s = opaque; |
1285 | HWVoiceOut *hwo = NULL; |
1286 | HWVoiceIn *hwi = NULL; |
1287 | int op = running ? VOICE_ENABLE : VOICE_DISABLE; |
1288 | |
1289 | s->vm_running = running; |
1290 | while ((hwo = audio_pcm_hw_find_any_enabled_out(s, hwo))) { |
1291 | hwo->pcm_ops->ctl_out(hwo, op); |
1292 | } |
1293 | |
1294 | while ((hwi = audio_pcm_hw_find_any_enabled_in(s, hwi))) { |
1295 | hwi->pcm_ops->ctl_in(hwi, op); |
1296 | } |
1297 | audio_reset_timer (s); |
1298 | } |
1299 | |
1300 | static bool is_cleaning_up; |
1301 | |
1302 | bool audio_is_cleaning_up(void) |
1303 | { |
1304 | return is_cleaning_up; |
1305 | } |
1306 | |
1307 | static void free_audio_state(AudioState *s) |
1308 | { |
1309 | HWVoiceOut *hwo, *hwon; |
1310 | HWVoiceIn *hwi, *hwin; |
1311 | |
1312 | QLIST_FOREACH_SAFE(hwo, &s->hw_head_out, entries, hwon) { |
1313 | SWVoiceCap *sc; |
1314 | |
1315 | if (hwo->enabled) { |
1316 | hwo->pcm_ops->ctl_out (hwo, VOICE_DISABLE); |
1317 | } |
1318 | hwo->pcm_ops->fini_out (hwo); |
1319 | |
1320 | for (sc = hwo->cap_head.lh_first; sc; sc = sc->entries.le_next) { |
1321 | CaptureVoiceOut *cap = sc->cap; |
1322 | struct capture_callback *cb; |
1323 | |
1324 | for (cb = cap->cb_head.lh_first; cb; cb = cb->entries.le_next) { |
1325 | cb->ops.destroy (cb->opaque); |
1326 | } |
1327 | } |
1328 | QLIST_REMOVE(hwo, entries); |
1329 | } |
1330 | |
1331 | QLIST_FOREACH_SAFE(hwi, &s->hw_head_in, entries, hwin) { |
1332 | if (hwi->enabled) { |
1333 | hwi->pcm_ops->ctl_in (hwi, VOICE_DISABLE); |
1334 | } |
1335 | hwi->pcm_ops->fini_in (hwi); |
1336 | QLIST_REMOVE(hwi, entries); |
1337 | } |
1338 | |
1339 | if (s->drv) { |
1340 | s->drv->fini (s->drv_opaque); |
1341 | s->drv = NULL; |
1342 | } |
1343 | |
1344 | if (s->dev) { |
1345 | qapi_free_Audiodev(s->dev); |
1346 | s->dev = NULL; |
1347 | } |
1348 | |
1349 | if (s->ts) { |
1350 | timer_free(s->ts); |
1351 | s->ts = NULL; |
1352 | } |
1353 | |
1354 | g_free(s); |
1355 | } |
1356 | |
1357 | void audio_cleanup(void) |
1358 | { |
1359 | is_cleaning_up = true; |
1360 | while (!QTAILQ_EMPTY(&audio_states)) { |
1361 | AudioState *s = QTAILQ_FIRST(&audio_states); |
1362 | QTAILQ_REMOVE(&audio_states, s, list); |
1363 | free_audio_state(s); |
1364 | } |
1365 | } |
1366 | |
1367 | static const VMStateDescription vmstate_audio = { |
1368 | .name = "audio" , |
1369 | .version_id = 1, |
1370 | .minimum_version_id = 1, |
1371 | .fields = (VMStateField[]) { |
1372 | VMSTATE_END_OF_LIST() |
1373 | } |
1374 | }; |
1375 | |
1376 | static void audio_validate_opts(Audiodev *dev, Error **errp); |
1377 | |
1378 | static AudiodevListEntry *audiodev_find( |
1379 | AudiodevListHead *head, const char *drvname) |
1380 | { |
1381 | AudiodevListEntry *e; |
1382 | QSIMPLEQ_FOREACH(e, head, next) { |
1383 | if (strcmp(AudiodevDriver_str(e->dev->driver), drvname) == 0) { |
1384 | return e; |
1385 | } |
1386 | } |
1387 | |
1388 | return NULL; |
1389 | } |
1390 | |
1391 | /* |
1392 | * if we have dev, this function was called because of an -audiodev argument => |
1393 | * initialize a new state with it |
1394 | * if dev == NULL => legacy implicit initialization, return the already created |
1395 | * state or create a new one |
1396 | */ |
1397 | static AudioState *audio_init(Audiodev *dev, const char *name) |
1398 | { |
1399 | static bool atexit_registered; |
1400 | size_t i; |
1401 | int done = 0; |
1402 | const char *drvname = NULL; |
1403 | VMChangeStateEntry *e; |
1404 | AudioState *s; |
1405 | struct audio_driver *driver; |
1406 | /* silence gcc warning about uninitialized variable */ |
1407 | AudiodevListHead head = QSIMPLEQ_HEAD_INITIALIZER(head); |
1408 | |
1409 | if (dev) { |
1410 | /* -audiodev option */ |
1411 | legacy_config = false; |
1412 | drvname = AudiodevDriver_str(dev->driver); |
1413 | } else if (!QTAILQ_EMPTY(&audio_states)) { |
1414 | if (!legacy_config) { |
1415 | dolog("Device %s: audiodev default parameter is deprecated, please " |
1416 | "specify audiodev=%s\n" , name, |
1417 | QTAILQ_FIRST(&audio_states)->dev->id); |
1418 | } |
1419 | return QTAILQ_FIRST(&audio_states); |
1420 | } else { |
1421 | /* legacy implicit initialization */ |
1422 | head = audio_handle_legacy_opts(); |
1423 | /* |
1424 | * In case of legacy initialization, all Audiodevs in the list will have |
1425 | * the same configuration (except the driver), so it does't matter which |
1426 | * one we chose. We need an Audiodev to set up AudioState before we can |
1427 | * init a driver. Also note that dev at this point is still in the |
1428 | * list. |
1429 | */ |
1430 | dev = QSIMPLEQ_FIRST(&head)->dev; |
1431 | audio_validate_opts(dev, &error_abort); |
1432 | } |
1433 | |
1434 | s = g_malloc0(sizeof(AudioState)); |
1435 | s->dev = dev; |
1436 | |
1437 | QLIST_INIT (&s->hw_head_out); |
1438 | QLIST_INIT (&s->hw_head_in); |
1439 | QLIST_INIT (&s->cap_head); |
1440 | if (!atexit_registered) { |
1441 | atexit(audio_cleanup); |
1442 | atexit_registered = true; |
1443 | } |
1444 | QTAILQ_INSERT_TAIL(&audio_states, s, list); |
1445 | |
1446 | s->ts = timer_new_ns(QEMU_CLOCK_VIRTUAL, audio_timer, s); |
1447 | |
1448 | s->nb_hw_voices_out = audio_get_pdo_out(dev)->voices; |
1449 | s->nb_hw_voices_in = audio_get_pdo_in(dev)->voices; |
1450 | |
1451 | if (s->nb_hw_voices_out <= 0) { |
1452 | dolog ("Bogus number of playback voices %d, setting to 1\n" , |
1453 | s->nb_hw_voices_out); |
1454 | s->nb_hw_voices_out = 1; |
1455 | } |
1456 | |
1457 | if (s->nb_hw_voices_in <= 0) { |
1458 | dolog ("Bogus number of capture voices %d, setting to 0\n" , |
1459 | s->nb_hw_voices_in); |
1460 | s->nb_hw_voices_in = 0; |
1461 | } |
1462 | |
1463 | if (drvname) { |
1464 | driver = audio_driver_lookup(drvname); |
1465 | if (driver) { |
1466 | done = !audio_driver_init(s, driver, true, dev); |
1467 | } else { |
1468 | dolog ("Unknown audio driver `%s'\n" , drvname); |
1469 | } |
1470 | } else { |
1471 | for (i = 0; audio_prio_list[i]; i++) { |
1472 | AudiodevListEntry *e = audiodev_find(&head, audio_prio_list[i]); |
1473 | driver = audio_driver_lookup(audio_prio_list[i]); |
1474 | |
1475 | if (e && driver) { |
1476 | s->dev = dev = e->dev; |
1477 | audio_validate_opts(dev, &error_abort); |
1478 | done = !audio_driver_init(s, driver, false, dev); |
1479 | if (done) { |
1480 | e->dev = NULL; |
1481 | break; |
1482 | } |
1483 | } |
1484 | } |
1485 | } |
1486 | audio_free_audiodev_list(&head); |
1487 | |
1488 | if (!done) { |
1489 | driver = audio_driver_lookup("none" ); |
1490 | done = !audio_driver_init(s, driver, false, dev); |
1491 | assert(done); |
1492 | dolog("warning: Using timer based audio emulation\n" ); |
1493 | } |
1494 | |
1495 | if (dev->timer_period <= 0) { |
1496 | s->period_ticks = 1; |
1497 | } else { |
1498 | s->period_ticks = dev->timer_period * SCALE_US; |
1499 | } |
1500 | |
1501 | e = qemu_add_vm_change_state_handler (audio_vm_change_state_handler, s); |
1502 | if (!e) { |
1503 | dolog ("warning: Could not register change state handler\n" |
1504 | "(Audio can continue looping even after stopping the VM)\n" ); |
1505 | } |
1506 | |
1507 | QLIST_INIT (&s->card_head); |
1508 | vmstate_register (NULL, 0, &vmstate_audio, s); |
1509 | return s; |
1510 | } |
1511 | |
1512 | void audio_free_audiodev_list(AudiodevListHead *head) |
1513 | { |
1514 | AudiodevListEntry *e; |
1515 | while ((e = QSIMPLEQ_FIRST(head))) { |
1516 | QSIMPLEQ_REMOVE_HEAD(head, next); |
1517 | qapi_free_Audiodev(e->dev); |
1518 | g_free(e); |
1519 | } |
1520 | } |
1521 | |
1522 | void AUD_register_card (const char *name, QEMUSoundCard *card) |
1523 | { |
1524 | if (!card->state) { |
1525 | card->state = audio_init(NULL, name); |
1526 | } |
1527 | |
1528 | card->name = g_strdup (name); |
1529 | memset (&card->entries, 0, sizeof (card->entries)); |
1530 | QLIST_INSERT_HEAD(&card->state->card_head, card, entries); |
1531 | } |
1532 | |
1533 | void AUD_remove_card (QEMUSoundCard *card) |
1534 | { |
1535 | QLIST_REMOVE (card, entries); |
1536 | g_free (card->name); |
1537 | } |
1538 | |
1539 | |
1540 | CaptureVoiceOut *AUD_add_capture( |
1541 | AudioState *s, |
1542 | struct audsettings *as, |
1543 | struct audio_capture_ops *ops, |
1544 | void *cb_opaque |
1545 | ) |
1546 | { |
1547 | CaptureVoiceOut *cap; |
1548 | struct capture_callback *cb; |
1549 | |
1550 | if (!s) { |
1551 | if (!legacy_config) { |
1552 | dolog("Capturing without setting an audiodev is deprecated\n" ); |
1553 | } |
1554 | s = audio_init(NULL, NULL); |
1555 | } |
1556 | |
1557 | if (audio_validate_settings (as)) { |
1558 | dolog ("Invalid settings were passed when trying to add capture\n" ); |
1559 | audio_print_settings (as); |
1560 | return NULL; |
1561 | } |
1562 | |
1563 | cb = g_malloc0(sizeof(*cb)); |
1564 | cb->ops = *ops; |
1565 | cb->opaque = cb_opaque; |
1566 | |
1567 | cap = audio_pcm_capture_find_specific(s, as); |
1568 | if (cap) { |
1569 | QLIST_INSERT_HEAD (&cap->cb_head, cb, entries); |
1570 | return cap; |
1571 | } |
1572 | else { |
1573 | HWVoiceOut *hw; |
1574 | CaptureVoiceOut *cap; |
1575 | |
1576 | cap = g_malloc0(sizeof(*cap)); |
1577 | |
1578 | hw = &cap->hw; |
1579 | hw->s = s; |
1580 | QLIST_INIT (&hw->sw_head); |
1581 | QLIST_INIT (&cap->cb_head); |
1582 | |
1583 | /* XXX find a more elegant way */ |
1584 | hw->samples = 4096 * 4; |
1585 | hw->mix_buf = g_new0(struct st_sample, hw->samples); |
1586 | |
1587 | audio_pcm_init_info (&hw->info, as); |
1588 | |
1589 | cap->buf = g_malloc0_n(hw->samples, 1 << hw->info.shift); |
1590 | |
1591 | hw->clip = mixeng_clip |
1592 | [hw->info.nchannels == 2] |
1593 | [hw->info.sign] |
1594 | [hw->info.swap_endianness] |
1595 | [audio_bits_to_index (hw->info.bits)]; |
1596 | |
1597 | QLIST_INSERT_HEAD (&s->cap_head, cap, entries); |
1598 | QLIST_INSERT_HEAD (&cap->cb_head, cb, entries); |
1599 | |
1600 | QLIST_FOREACH(hw, &s->hw_head_out, entries) { |
1601 | audio_attach_capture (hw); |
1602 | } |
1603 | return cap; |
1604 | } |
1605 | } |
1606 | |
1607 | void AUD_del_capture (CaptureVoiceOut *cap, void *cb_opaque) |
1608 | { |
1609 | struct capture_callback *cb; |
1610 | |
1611 | for (cb = cap->cb_head.lh_first; cb; cb = cb->entries.le_next) { |
1612 | if (cb->opaque == cb_opaque) { |
1613 | cb->ops.destroy (cb_opaque); |
1614 | QLIST_REMOVE (cb, entries); |
1615 | g_free (cb); |
1616 | |
1617 | if (!cap->cb_head.lh_first) { |
1618 | SWVoiceOut *sw = cap->hw.sw_head.lh_first, *sw1; |
1619 | |
1620 | while (sw) { |
1621 | SWVoiceCap *sc = (SWVoiceCap *) sw; |
1622 | #ifdef DEBUG_CAPTURE |
1623 | dolog ("freeing %s\n" , sw->name); |
1624 | #endif |
1625 | |
1626 | sw1 = sw->entries.le_next; |
1627 | if (sw->rate) { |
1628 | st_rate_stop (sw->rate); |
1629 | sw->rate = NULL; |
1630 | } |
1631 | QLIST_REMOVE (sw, entries); |
1632 | QLIST_REMOVE (sc, entries); |
1633 | g_free (sc); |
1634 | sw = sw1; |
1635 | } |
1636 | QLIST_REMOVE (cap, entries); |
1637 | g_free (cap->hw.mix_buf); |
1638 | g_free (cap->buf); |
1639 | g_free (cap); |
1640 | } |
1641 | return; |
1642 | } |
1643 | } |
1644 | } |
1645 | |
1646 | void AUD_set_volume_out (SWVoiceOut *sw, int mute, uint8_t lvol, uint8_t rvol) |
1647 | { |
1648 | if (sw) { |
1649 | HWVoiceOut *hw = sw->hw; |
1650 | |
1651 | sw->vol.mute = mute; |
1652 | sw->vol.l = nominal_volume.l * lvol / 255; |
1653 | sw->vol.r = nominal_volume.r * rvol / 255; |
1654 | |
1655 | if (hw->pcm_ops->ctl_out) { |
1656 | hw->pcm_ops->ctl_out (hw, VOICE_VOLUME, sw); |
1657 | } |
1658 | } |
1659 | } |
1660 | |
1661 | void AUD_set_volume_in (SWVoiceIn *sw, int mute, uint8_t lvol, uint8_t rvol) |
1662 | { |
1663 | if (sw) { |
1664 | HWVoiceIn *hw = sw->hw; |
1665 | |
1666 | sw->vol.mute = mute; |
1667 | sw->vol.l = nominal_volume.l * lvol / 255; |
1668 | sw->vol.r = nominal_volume.r * rvol / 255; |
1669 | |
1670 | if (hw->pcm_ops->ctl_in) { |
1671 | hw->pcm_ops->ctl_in (hw, VOICE_VOLUME, sw); |
1672 | } |
1673 | } |
1674 | } |
1675 | |
1676 | void audio_create_pdos(Audiodev *dev) |
1677 | { |
1678 | switch (dev->driver) { |
1679 | #define CASE(DRIVER, driver, pdo_name) \ |
1680 | case AUDIODEV_DRIVER_##DRIVER: \ |
1681 | if (!dev->u.driver.has_in) { \ |
1682 | dev->u.driver.in = g_malloc0( \ |
1683 | sizeof(Audiodev##pdo_name##PerDirectionOptions)); \ |
1684 | dev->u.driver.has_in = true; \ |
1685 | } \ |
1686 | if (!dev->u.driver.has_out) { \ |
1687 | dev->u.driver.out = g_malloc0( \ |
1688 | sizeof(Audiodev##pdo_name##PerDirectionOptions)); \ |
1689 | dev->u.driver.has_out = true; \ |
1690 | } \ |
1691 | break |
1692 | |
1693 | CASE(NONE, none, ); |
1694 | CASE(ALSA, alsa, Alsa); |
1695 | CASE(COREAUDIO, coreaudio, Coreaudio); |
1696 | CASE(DSOUND, dsound, ); |
1697 | CASE(OSS, oss, Oss); |
1698 | CASE(PA, pa, Pa); |
1699 | CASE(SDL, sdl, ); |
1700 | CASE(SPICE, spice, ); |
1701 | CASE(WAV, wav, ); |
1702 | |
1703 | case AUDIODEV_DRIVER__MAX: |
1704 | abort(); |
1705 | }; |
1706 | } |
1707 | |
1708 | static void audio_validate_per_direction_opts( |
1709 | AudiodevPerDirectionOptions *pdo, Error **errp) |
1710 | { |
1711 | if (!pdo->has_fixed_settings) { |
1712 | pdo->has_fixed_settings = true; |
1713 | pdo->fixed_settings = true; |
1714 | } |
1715 | if (!pdo->fixed_settings && |
1716 | (pdo->has_frequency || pdo->has_channels || pdo->has_format)) { |
1717 | error_setg(errp, |
1718 | "You can't use frequency, channels or format with fixed-settings=off" ); |
1719 | return; |
1720 | } |
1721 | |
1722 | if (!pdo->has_frequency) { |
1723 | pdo->has_frequency = true; |
1724 | pdo->frequency = 44100; |
1725 | } |
1726 | if (!pdo->has_channels) { |
1727 | pdo->has_channels = true; |
1728 | pdo->channels = 2; |
1729 | } |
1730 | if (!pdo->has_voices) { |
1731 | pdo->has_voices = true; |
1732 | pdo->voices = 1; |
1733 | } |
1734 | if (!pdo->has_format) { |
1735 | pdo->has_format = true; |
1736 | pdo->format = AUDIO_FORMAT_S16; |
1737 | } |
1738 | } |
1739 | |
1740 | static void audio_validate_opts(Audiodev *dev, Error **errp) |
1741 | { |
1742 | Error *err = NULL; |
1743 | |
1744 | audio_create_pdos(dev); |
1745 | |
1746 | audio_validate_per_direction_opts(audio_get_pdo_in(dev), &err); |
1747 | if (err) { |
1748 | error_propagate(errp, err); |
1749 | return; |
1750 | } |
1751 | |
1752 | audio_validate_per_direction_opts(audio_get_pdo_out(dev), &err); |
1753 | if (err) { |
1754 | error_propagate(errp, err); |
1755 | return; |
1756 | } |
1757 | |
1758 | if (!dev->has_timer_period) { |
1759 | dev->has_timer_period = true; |
1760 | dev->timer_period = 10000; /* 100Hz -> 10ms */ |
1761 | } |
1762 | } |
1763 | |
1764 | void audio_parse_option(const char *opt) |
1765 | { |
1766 | AudiodevListEntry *e; |
1767 | Audiodev *dev = NULL; |
1768 | |
1769 | Visitor *v = qobject_input_visitor_new_str(opt, "driver" , &error_fatal); |
1770 | visit_type_Audiodev(v, NULL, &dev, &error_fatal); |
1771 | visit_free(v); |
1772 | |
1773 | audio_validate_opts(dev, &error_fatal); |
1774 | |
1775 | e = g_malloc0(sizeof(AudiodevListEntry)); |
1776 | e->dev = dev; |
1777 | QSIMPLEQ_INSERT_TAIL(&audiodevs, e, next); |
1778 | } |
1779 | |
1780 | void audio_init_audiodevs(void) |
1781 | { |
1782 | AudiodevListEntry *e; |
1783 | |
1784 | QSIMPLEQ_FOREACH(e, &audiodevs, next) { |
1785 | audio_init(e->dev, NULL); |
1786 | } |
1787 | } |
1788 | |
1789 | audsettings audiodev_to_audsettings(AudiodevPerDirectionOptions *pdo) |
1790 | { |
1791 | return (audsettings) { |
1792 | .freq = pdo->frequency, |
1793 | .nchannels = pdo->channels, |
1794 | .fmt = pdo->format, |
1795 | .endianness = AUDIO_HOST_ENDIANNESS, |
1796 | }; |
1797 | } |
1798 | |
1799 | int audioformat_bytes_per_sample(AudioFormat fmt) |
1800 | { |
1801 | switch (fmt) { |
1802 | case AUDIO_FORMAT_U8: |
1803 | case AUDIO_FORMAT_S8: |
1804 | return 1; |
1805 | |
1806 | case AUDIO_FORMAT_U16: |
1807 | case AUDIO_FORMAT_S16: |
1808 | return 2; |
1809 | |
1810 | case AUDIO_FORMAT_U32: |
1811 | case AUDIO_FORMAT_S32: |
1812 | return 4; |
1813 | |
1814 | case AUDIO_FORMAT__MAX: |
1815 | ; |
1816 | } |
1817 | abort(); |
1818 | } |
1819 | |
1820 | |
1821 | /* frames = freq * usec / 1e6 */ |
1822 | int audio_buffer_frames(AudiodevPerDirectionOptions *pdo, |
1823 | audsettings *as, int def_usecs) |
1824 | { |
1825 | uint64_t usecs = pdo->has_buffer_length ? pdo->buffer_length : def_usecs; |
1826 | return (as->freq * usecs + 500000) / 1000000; |
1827 | } |
1828 | |
1829 | /* samples = channels * frames = channels * freq * usec / 1e6 */ |
1830 | int audio_buffer_samples(AudiodevPerDirectionOptions *pdo, |
1831 | audsettings *as, int def_usecs) |
1832 | { |
1833 | return as->nchannels * audio_buffer_frames(pdo, as, def_usecs); |
1834 | } |
1835 | |
1836 | /* |
1837 | * bytes = bytes_per_sample * samples = |
1838 | * bytes_per_sample * channels * freq * usec / 1e6 |
1839 | */ |
1840 | int audio_buffer_bytes(AudiodevPerDirectionOptions *pdo, |
1841 | audsettings *as, int def_usecs) |
1842 | { |
1843 | return audio_buffer_samples(pdo, as, def_usecs) * |
1844 | audioformat_bytes_per_sample(as->fmt); |
1845 | } |
1846 | |
1847 | AudioState *audio_state_by_name(const char *name) |
1848 | { |
1849 | AudioState *s; |
1850 | QTAILQ_FOREACH(s, &audio_states, list) { |
1851 | assert(s->dev); |
1852 | if (strcmp(name, s->dev->id) == 0) { |
1853 | return s; |
1854 | } |
1855 | } |
1856 | return NULL; |
1857 | } |
1858 | |
1859 | const char *audio_get_id(QEMUSoundCard *card) |
1860 | { |
1861 | if (card->state) { |
1862 | assert(card->state->dev); |
1863 | return card->state->dev->id; |
1864 | } else { |
1865 | return "" ; |
1866 | } |
1867 | } |
1868 | |