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hw: Directly use "qemu/units.h" instead of "qemu/cutils.h"
[qemu/kevin.git] / audio / audio.c
blobd6e91901aaadf1e1a0250c3eb47096e4149271d2
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 #include "qemu/osdep.h"
25 #include "hw/hw.h"
26 #include "audio.h"
27 #include "monitor/monitor.h"
28 #include "qemu/timer.h"
29 #include "sysemu/sysemu.h"
30 #include "qemu/cutils.h"
31 #include "sysemu/replay.h"
32
33 #define AUDIO_CAP "audio"
34 #include "audio_int.h"
35
36 /* #define DEBUG_LIVE */
37 /* #define DEBUG_OUT */
38 /* #define DEBUG_CAPTURE */
39 /* #define DEBUG_POLL */
40
41 #define SW_NAME(sw) (sw)->name ? (sw)->name : "unknown"
42
43
44 /* Order of CONFIG_AUDIO_DRIVERS is import.
45 The 1st one is the one used by default, that is the reason
46 that we generate the list.
47 */
48 static const char *audio_prio_list[] = {
49 "spice",
50 CONFIG_AUDIO_DRIVERS
51 "none",
52 "wav",
53 };
54
55 static QLIST_HEAD(, audio_driver) audio_drivers;
56
57 void audio_driver_register(audio_driver *drv)
58 {
59 QLIST_INSERT_HEAD(&audio_drivers, drv, next);
60 }
61
62 audio_driver *audio_driver_lookup(const char *name)
63 {
64 struct audio_driver *d;
65
66 QLIST_FOREACH(d, &audio_drivers, next) {
67 if (strcmp(name, d->name) == 0) {
68 return d;
69 }
70 }
71
72 audio_module_load_one(name);
73 QLIST_FOREACH(d, &audio_drivers, next) {
74 if (strcmp(name, d->name) == 0) {
75 return d;
76 }
77 }
78
79 return NULL;
80 }
81
82 static void audio_module_load_all(void)
83 {
84 int i;
85
86 for (i = 0; i < ARRAY_SIZE(audio_prio_list); i++) {
87 audio_driver_lookup(audio_prio_list[i]);
88 }
89 }
90
91 struct fixed_settings {
92 int enabled;
93 int nb_voices;
94 int greedy;
95 struct audsettings settings;
96 };
97
98 static struct {
99 struct fixed_settings fixed_out;
100 struct fixed_settings fixed_in;
101 union {
102 int hertz;
103 int64_t ticks;
104 } period;
105 int try_poll_in;
106 int try_poll_out;
107 } conf = {
108 .fixed_out = { /* DAC fixed settings */
109 .enabled = 1,
110 .nb_voices = 1,
111 .greedy = 1,
112 .settings = {
113 .freq = 44100,
114 .nchannels = 2,
115 .fmt = AUD_FMT_S16,
116 .endianness = AUDIO_HOST_ENDIANNESS,
117 }
118 },
119
120 .fixed_in = { /* ADC fixed settings */
121 .enabled = 1,
122 .nb_voices = 1,
123 .greedy = 1,
124 .settings = {
125 .freq = 44100,
126 .nchannels = 2,
127 .fmt = AUD_FMT_S16,
128 .endianness = AUDIO_HOST_ENDIANNESS,
129 }
130 },
131
132 .period = { .hertz = 100 },
133 .try_poll_in = 1,
134 .try_poll_out = 1,
135 };
136
137 static AudioState glob_audio_state;
138
139 const struct mixeng_volume nominal_volume = {
140 .mute = 0,
141 #ifdef FLOAT_MIXENG
142 .r = 1.0,
143 .l = 1.0,
144 #else
145 .r = 1ULL << 32,
146 .l = 1ULL << 32,
147 #endif
148 };
149
150 #ifdef AUDIO_IS_FLAWLESS_AND_NO_CHECKS_ARE_REQURIED
151 #error No its not
152 #else
153 static void audio_print_options (const char *prefix,
154 struct audio_option *opt);
155
156 int audio_bug (const char *funcname, int cond)
157 {
158 if (cond) {
159 static int shown;
160
161 AUD_log (NULL, "A bug was just triggered in %s\n", funcname);
162 if (!shown) {
163 struct audio_driver *d;
164
165 shown = 1;
166 AUD_log (NULL, "Save all your work and restart without audio\n");
167 AUD_log (NULL, "Please send bug report to av1474@comtv.ru\n");
168 AUD_log (NULL, "I am sorry\n");
169 d = glob_audio_state.drv;
170 if (d) {
171 audio_print_options (d->name, d->options);
172 }
173 }
174 AUD_log (NULL, "Context:\n");
175
176 #if defined AUDIO_BREAKPOINT_ON_BUG
177 # if defined HOST_I386
178 # if defined __GNUC__
179 __asm__ ("int3");
180 # elif defined _MSC_VER
181 _asm _emit 0xcc;
182 # else
183 abort ();
184 # endif
185 # else
186 abort ();
187 # endif
188 #endif
189 }
190
191 return cond;
192 }
193 #endif
194
195 static inline int audio_bits_to_index (int bits)
196 {
197 switch (bits) {
198 case 8:
199 return 0;
200
201 case 16:
202 return 1;
203
204 case 32:
205 return 2;
206
207 default:
208 audio_bug ("bits_to_index", 1);
209 AUD_log (NULL, "invalid bits %d\n", bits);
210 return 0;
211 }
212 }
213
214 void *audio_calloc (const char *funcname, int nmemb, size_t size)
215 {
216 int cond;
217 size_t len;
218
219 len = nmemb * size;
220 cond = !nmemb || !size;
221 cond |= nmemb < 0;
222 cond |= len < size;
223
224 if (audio_bug ("audio_calloc", cond)) {
225 AUD_log (NULL, "%s passed invalid arguments to audio_calloc\n",
226 funcname);
227 AUD_log (NULL, "nmemb=%d size=%zu (len=%zu)\n", nmemb, size, len);
228 return NULL;
229 }
230
231 return g_malloc0 (len);
232 }
233
234 static char *audio_alloc_prefix (const char *s)
235 {
236 const char qemu_prefix[] = "QEMU_";
237 size_t len, i;
238 char *r, *u;
239
240 if (!s) {
241 return NULL;
242 }
243
244 len = strlen (s);
245 r = g_malloc (len + sizeof (qemu_prefix));
246
247 u = r + sizeof (qemu_prefix) - 1;
248
249 pstrcpy (r, len + sizeof (qemu_prefix), qemu_prefix);
250 pstrcat (r, len + sizeof (qemu_prefix), s);
251
252 for (i = 0; i < len; ++i) {
253 u[i] = qemu_toupper(u[i]);
254 }
255
256 return r;
257 }
258
259 static const char *audio_audfmt_to_string (audfmt_e fmt)
260 {
261 switch (fmt) {
262 case AUD_FMT_U8:
263 return "U8";
264
265 case AUD_FMT_U16:
266 return "U16";
267
268 case AUD_FMT_S8:
269 return "S8";
270
271 case AUD_FMT_S16:
272 return "S16";
273
274 case AUD_FMT_U32:
275 return "U32";
276
277 case AUD_FMT_S32:
278 return "S32";
279 }
280
281 dolog ("Bogus audfmt %d returning S16\n", fmt);
282 return "S16";
283 }
284
285 static audfmt_e audio_string_to_audfmt (const char *s, audfmt_e defval,
286 int *defaultp)
287 {
288 if (!strcasecmp (s, "u8")) {
289 *defaultp = 0;
290 return AUD_FMT_U8;
291 }
292 else if (!strcasecmp (s, "u16")) {
293 *defaultp = 0;
294 return AUD_FMT_U16;
295 }
296 else if (!strcasecmp (s, "u32")) {
297 *defaultp = 0;
298 return AUD_FMT_U32;
299 }
300 else if (!strcasecmp (s, "s8")) {
301 *defaultp = 0;
302 return AUD_FMT_S8;
303 }
304 else if (!strcasecmp (s, "s16")) {
305 *defaultp = 0;
306 return AUD_FMT_S16;
307 }
308 else if (!strcasecmp (s, "s32")) {
309 *defaultp = 0;
310 return AUD_FMT_S32;
311 }
312 else {
313 dolog ("Bogus audio format `%s' using %s\n",
314 s, audio_audfmt_to_string (defval));
315 *defaultp = 1;
316 return defval;
317 }
318 }
319
320 static audfmt_e audio_get_conf_fmt (const char *envname,
321 audfmt_e defval,
322 int *defaultp)
323 {
324 const char *var = getenv (envname);
325 if (!var) {
326 *defaultp = 1;
327 return defval;
328 }
329 return audio_string_to_audfmt (var, defval, defaultp);
330 }
331
332 static int audio_get_conf_int (const char *key, int defval, int *defaultp)
333 {
334 int val;
335 char *strval;
336
337 strval = getenv (key);
338 if (strval && !qemu_strtoi(strval, NULL, 10, &val)) {
339 *defaultp = 0;
340 return val;
341 }
342 else {
343 *defaultp = 1;
344 return defval;
345 }
346 }
347
348 static const char *audio_get_conf_str (const char *key,
349 const char *defval,
350 int *defaultp)
351 {
352 const char *val = getenv (key);
353 if (!val) {
354 *defaultp = 1;
355 return defval;
356 }
357 else {
358 *defaultp = 0;
359 return val;
360 }
361 }
362
363 void AUD_vlog (const char *cap, const char *fmt, va_list ap)
364 {
365 if (cap) {
366 fprintf(stderr, "%s: ", cap);
367 }
368
369 vfprintf(stderr, fmt, ap);
370 }
371
372 void AUD_log (const char *cap, const char *fmt, ...)
373 {
374 va_list ap;
375
376 va_start (ap, fmt);
377 AUD_vlog (cap, fmt, ap);
378 va_end (ap);
379 }
380
381 static void audio_print_options (const char *prefix,
382 struct audio_option *opt)
383 {
384 char *uprefix;
385
386 if (!prefix) {
387 dolog ("No prefix specified\n");
388 return;
389 }
390
391 if (!opt) {
392 dolog ("No options\n");
393 return;
394 }
395
396 uprefix = audio_alloc_prefix (prefix);
397
398 for (; opt->name; opt++) {
399 const char *state = "default";
400 printf (" %s_%s: ", uprefix, opt->name);
401
402 if (opt->overriddenp && *opt->overriddenp) {
403 state = "current";
404 }
405
406 switch (opt->tag) {
407 case AUD_OPT_BOOL:
408 {
409 int *intp = opt->valp;
410 printf ("boolean, %s = %d\n", state, *intp ? 1 : 0);
411 }
412 break;
413
414 case AUD_OPT_INT:
415 {
416 int *intp = opt->valp;
417 printf ("integer, %s = %d\n", state, *intp);
418 }
419 break;
420
421 case AUD_OPT_FMT:
422 {
423 audfmt_e *fmtp = opt->valp;
424 printf (
425 "format, %s = %s, (one of: U8 S8 U16 S16 U32 S32)\n",
426 state,
427 audio_audfmt_to_string (*fmtp)
428 );
429 }
430 break;
431
432 case AUD_OPT_STR:
433 {
434 const char **strp = opt->valp;
435 printf ("string, %s = %s\n",
436 state,
437 *strp ? *strp : "(not set)");
438 }
439 break;
440
441 default:
442 printf ("???\n");
443 dolog ("Bad value tag for option %s_%s %d\n",
444 uprefix, opt->name, opt->tag);
445 break;
446 }
447 printf (" %s\n", opt->descr);
448 }
449
450 g_free (uprefix);
451 }
452
453 static void audio_process_options (const char *prefix,
454 struct audio_option *opt)
455 {
456 char *optname;
457 const char qemu_prefix[] = "QEMU_";
458 size_t preflen, optlen;
459
460 if (audio_bug(__func__, !prefix)) {
461 dolog ("prefix = NULL\n");
462 return;
463 }
464
465 if (audio_bug(__func__, !opt)) {
466 dolog ("opt = NULL\n");
467 return;
468 }
469
470 preflen = strlen (prefix);
471
472 for (; opt->name; opt++) {
473 size_t len, i;
474 int def;
475
476 if (!opt->valp) {
477 dolog ("Option value pointer for `%s' is not set\n",
478 opt->name);
479 continue;
480 }
481
482 len = strlen (opt->name);
483 /* len of opt->name + len of prefix + size of qemu_prefix
484 * (includes trailing zero) + zero + underscore (on behalf of
485 * sizeof) */
486 optlen = len + preflen + sizeof (qemu_prefix) + 1;
487 optname = g_malloc (optlen);
488
489 pstrcpy (optname, optlen, qemu_prefix);
490
491 /* copy while upper-casing, including trailing zero */
492 for (i = 0; i <= preflen; ++i) {
493 optname[i + sizeof (qemu_prefix) - 1] = qemu_toupper(prefix[i]);
494 }
495 pstrcat (optname, optlen, "_");
496 pstrcat (optname, optlen, opt->name);
497
498 def = 1;
499 switch (opt->tag) {
500 case AUD_OPT_BOOL:
501 case AUD_OPT_INT:
502 {
503 int *intp = opt->valp;
504 *intp = audio_get_conf_int (optname, *intp, &def);
505 }
506 break;
507
508 case AUD_OPT_FMT:
509 {
510 audfmt_e *fmtp = opt->valp;
511 *fmtp = audio_get_conf_fmt (optname, *fmtp, &def);
512 }
513 break;
514
515 case AUD_OPT_STR:
516 {
517 const char **strp = opt->valp;
518 *strp = audio_get_conf_str (optname, *strp, &def);
519 }
520 break;
521
522 default:
523 dolog ("Bad value tag for option `%s' - %d\n",
524 optname, opt->tag);
525 break;
526 }
527
528 if (!opt->overriddenp) {
529 opt->overriddenp = &opt->overridden;
530 }
531 *opt->overriddenp = !def;
532 g_free (optname);
533 }
534 }
535
536 static void audio_print_settings (struct audsettings *as)
537 {
538 dolog ("frequency=%d nchannels=%d fmt=", as->freq, as->nchannels);
539
540 switch (as->fmt) {
541 case AUD_FMT_S8:
542 AUD_log (NULL, "S8");
543 break;
544 case AUD_FMT_U8:
545 AUD_log (NULL, "U8");
546 break;
547 case AUD_FMT_S16:
548 AUD_log (NULL, "S16");
549 break;
550 case AUD_FMT_U16:
551 AUD_log (NULL, "U16");
552 break;
553 case AUD_FMT_S32:
554 AUD_log (NULL, "S32");
555 break;
556 case AUD_FMT_U32:
557 AUD_log (NULL, "U32");
558 break;
559 default:
560 AUD_log (NULL, "invalid(%d)", as->fmt);
561 break;
562 }
563
564 AUD_log (NULL, " endianness=");
565 switch (as->endianness) {
566 case 0:
567 AUD_log (NULL, "little");
568 break;
569 case 1:
570 AUD_log (NULL, "big");
571 break;
572 default:
573 AUD_log (NULL, "invalid");
574 break;
575 }
576 AUD_log (NULL, "\n");
577 }
578
579 static int audio_validate_settings (struct audsettings *as)
580 {
581 int invalid;
582
583 invalid = as->nchannels != 1 && as->nchannels != 2;
584 invalid |= as->endianness != 0 && as->endianness != 1;
585
586 switch (as->fmt) {
587 case AUD_FMT_S8:
588 case AUD_FMT_U8:
589 case AUD_FMT_S16:
590 case AUD_FMT_U16:
591 case AUD_FMT_S32:
592 case AUD_FMT_U32:
593 break;
594 default:
595 invalid = 1;
596 break;
597 }
598
599 invalid |= as->freq <= 0;
600 return invalid ? -1 : 0;
601 }
602
603 static int audio_pcm_info_eq (struct audio_pcm_info *info, struct audsettings *as)
604 {
605 int bits = 8, sign = 0;
606
607 switch (as->fmt) {
608 case AUD_FMT_S8:
609 sign = 1;
610 /* fall through */
611 case AUD_FMT_U8:
612 break;
613
614 case AUD_FMT_S16:
615 sign = 1;
616 /* fall through */
617 case AUD_FMT_U16:
618 bits = 16;
619 break;
620
621 case AUD_FMT_S32:
622 sign = 1;
623 /* fall through */
624 case AUD_FMT_U32:
625 bits = 32;
626 break;
627 }
628 return info->freq == as->freq
629 && info->nchannels == as->nchannels
630 && info->sign == sign
631 && info->bits == bits
632 && info->swap_endianness == (as->endianness != AUDIO_HOST_ENDIANNESS);
633 }
634
635 void audio_pcm_init_info (struct audio_pcm_info *info, struct audsettings *as)
636 {
637 int bits = 8, sign = 0, shift = 0;
638
639 switch (as->fmt) {
640 case AUD_FMT_S8:
641 sign = 1;
642 case AUD_FMT_U8:
643 break;
644
645 case AUD_FMT_S16:
646 sign = 1;
647 case AUD_FMT_U16:
648 bits = 16;
649 shift = 1;
650 break;
651
652 case AUD_FMT_S32:
653 sign = 1;
654 case AUD_FMT_U32:
655 bits = 32;
656 shift = 2;
657 break;
658 }
659
660 info->freq = as->freq;
661 info->bits = bits;
662 info->sign = sign;
663 info->nchannels = as->nchannels;
664 info->shift = (as->nchannels == 2) + shift;
665 info->align = (1 << info->shift) - 1;
666 info->bytes_per_second = info->freq << info->shift;
667 info->swap_endianness = (as->endianness != AUDIO_HOST_ENDIANNESS);
668 }
669
670 void audio_pcm_info_clear_buf (struct audio_pcm_info *info, void *buf, int len)
671 {
672 if (!len) {
673 return;
674 }
675
676 if (info->sign) {
677 memset (buf, 0x00, len << info->shift);
678 }
679 else {
680 switch (info->bits) {
681 case 8:
682 memset (buf, 0x80, len << info->shift);
683 break;
684
685 case 16:
686 {
687 int i;
688 uint16_t *p = buf;
689 int shift = info->nchannels - 1;
690 short s = INT16_MAX;
691
692 if (info->swap_endianness) {
693 s = bswap16 (s);
694 }
695
696 for (i = 0; i < len << shift; i++) {
697 p[i] = s;
698 }
699 }
700 break;
701
702 case 32:
703 {
704 int i;
705 uint32_t *p = buf;
706 int shift = info->nchannels - 1;
707 int32_t s = INT32_MAX;
708
709 if (info->swap_endianness) {
710 s = bswap32 (s);
711 }
712
713 for (i = 0; i < len << shift; i++) {
714 p[i] = s;
715 }
716 }
717 break;
718
719 default:
720 AUD_log (NULL, "audio_pcm_info_clear_buf: invalid bits %d\n",
721 info->bits);
722 break;
723 }
724 }
725 }
726
727 /*
728 * Capture
729 */
730 static void noop_conv (struct st_sample *dst, const void *src, int samples)
731 {
732 (void) src;
733 (void) dst;
734 (void) samples;
735 }
736
737 static CaptureVoiceOut *audio_pcm_capture_find_specific (
738 struct audsettings *as
739 )
740 {
741 CaptureVoiceOut *cap;
742 AudioState *s = &glob_audio_state;
743
744 for (cap = s->cap_head.lh_first; cap; cap = cap->entries.le_next) {
745 if (audio_pcm_info_eq (&cap->hw.info, as)) {
746 return cap;
747 }
748 }
749 return NULL;
750 }
751
752 static void audio_notify_capture (CaptureVoiceOut *cap, audcnotification_e cmd)
753 {
754 struct capture_callback *cb;
755
756 #ifdef DEBUG_CAPTURE
757 dolog ("notification %d sent\n", cmd);
758 #endif
759 for (cb = cap->cb_head.lh_first; cb; cb = cb->entries.le_next) {
760 cb->ops.notify (cb->opaque, cmd);
761 }
762 }
763
764 static void audio_capture_maybe_changed (CaptureVoiceOut *cap, int enabled)
765 {
766 if (cap->hw.enabled != enabled) {
767 audcnotification_e cmd;
768 cap->hw.enabled = enabled;
769 cmd = enabled ? AUD_CNOTIFY_ENABLE : AUD_CNOTIFY_DISABLE;
770 audio_notify_capture (cap, cmd);
771 }
772 }
773
774 static void audio_recalc_and_notify_capture (CaptureVoiceOut *cap)
775 {
776 HWVoiceOut *hw = &cap->hw;
777 SWVoiceOut *sw;
778 int enabled = 0;
779
780 for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) {
781 if (sw->active) {
782 enabled = 1;
783 break;
784 }
785 }
786 audio_capture_maybe_changed (cap, enabled);
787 }
788
789 static void audio_detach_capture (HWVoiceOut *hw)
790 {
791 SWVoiceCap *sc = hw->cap_head.lh_first;
792
793 while (sc) {
794 SWVoiceCap *sc1 = sc->entries.le_next;
795 SWVoiceOut *sw = &sc->sw;
796 CaptureVoiceOut *cap = sc->cap;
797 int was_active = sw->active;
798
799 if (sw->rate) {
800 st_rate_stop (sw->rate);
801 sw->rate = NULL;
802 }
803
804 QLIST_REMOVE (sw, entries);
805 QLIST_REMOVE (sc, entries);
806 g_free (sc);
807 if (was_active) {
808 /* We have removed soft voice from the capture:
809 this might have changed the overall status of the capture
810 since this might have been the only active voice */
811 audio_recalc_and_notify_capture (cap);
812 }
813 sc = sc1;
814 }
815 }
816
817 static int audio_attach_capture (HWVoiceOut *hw)
818 {
819 AudioState *s = &glob_audio_state;
820 CaptureVoiceOut *cap;
821
822 audio_detach_capture (hw);
823 for (cap = s->cap_head.lh_first; cap; cap = cap->entries.le_next) {
824 SWVoiceCap *sc;
825 SWVoiceOut *sw;
826 HWVoiceOut *hw_cap = &cap->hw;
827
828 sc = audio_calloc(__func__, 1, sizeof(*sc));
829 if (!sc) {
830 dolog ("Could not allocate soft capture voice (%zu bytes)\n",
831 sizeof (*sc));
832 return -1;
833 }
834
835 sc->cap = cap;
836 sw = &sc->sw;
837 sw->hw = hw_cap;
838 sw->info = hw->info;
839 sw->empty = 1;
840 sw->active = hw->enabled;
841 sw->conv = noop_conv;
842 sw->ratio = ((int64_t) hw_cap->info.freq << 32) / sw->info.freq;
843 sw->vol = nominal_volume;
844 sw->rate = st_rate_start (sw->info.freq, hw_cap->info.freq);
845 if (!sw->rate) {
846 dolog ("Could not start rate conversion for `%s'\n", SW_NAME (sw));
847 g_free (sw);
848 return -1;
849 }
850 QLIST_INSERT_HEAD (&hw_cap->sw_head, sw, entries);
851 QLIST_INSERT_HEAD (&hw->cap_head, sc, entries);
852 #ifdef DEBUG_CAPTURE
853 sw->name = g_strdup_printf ("for %p %d,%d,%d",
854 hw, sw->info.freq, sw->info.bits,
855 sw->info.nchannels);
856 dolog ("Added %s active = %d\n", sw->name, sw->active);
857 #endif
858 if (sw->active) {
859 audio_capture_maybe_changed (cap, 1);
860 }
861 }
862 return 0;
863 }
864
865 /*
866 * Hard voice (capture)
867 */
868 static int audio_pcm_hw_find_min_in (HWVoiceIn *hw)
869 {
870 SWVoiceIn *sw;
871 int m = hw->total_samples_captured;
872
873 for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) {
874 if (sw->active) {
875 m = audio_MIN (m, sw->total_hw_samples_acquired);
876 }
877 }
878 return m;
879 }
880
881 int audio_pcm_hw_get_live_in (HWVoiceIn *hw)
882 {
883 int live = hw->total_samples_captured - audio_pcm_hw_find_min_in (hw);
884 if (audio_bug(__func__, live < 0 || live > hw->samples)) {
885 dolog ("live=%d hw->samples=%d\n", live, hw->samples);
886 return 0;
887 }
888 return live;
889 }
890
891 int audio_pcm_hw_clip_out (HWVoiceOut *hw, void *pcm_buf,
892 int live, int pending)
893 {
894 int left = hw->samples - pending;
895 int len = audio_MIN (left, live);
896 int clipped = 0;
897
898 while (len) {
899 struct st_sample *src = hw->mix_buf + hw->rpos;
900 uint8_t *dst = advance (pcm_buf, hw->rpos << hw->info.shift);
901 int samples_till_end_of_buf = hw->samples - hw->rpos;
902 int samples_to_clip = audio_MIN (len, samples_till_end_of_buf);
903
904 hw->clip (dst, src, samples_to_clip);
905
906 hw->rpos = (hw->rpos + samples_to_clip) % hw->samples;
907 len -= samples_to_clip;
908 clipped += samples_to_clip;
909 }
910 return clipped;
911 }
912
913 /*
914 * Soft voice (capture)
915 */
916 static int audio_pcm_sw_get_rpos_in (SWVoiceIn *sw)
917 {
918 HWVoiceIn *hw = sw->hw;
919 int live = hw->total_samples_captured - sw->total_hw_samples_acquired;
920 int rpos;
921
922 if (audio_bug(__func__, live < 0 || live > hw->samples)) {
923 dolog ("live=%d hw->samples=%d\n", live, hw->samples);
924 return 0;
925 }
926
927 rpos = hw->wpos - live;
928 if (rpos >= 0) {
929 return rpos;
930 }
931 else {
932 return hw->samples + rpos;
933 }
934 }
935
936 int audio_pcm_sw_read (SWVoiceIn *sw, void *buf, int size)
937 {
938 HWVoiceIn *hw = sw->hw;
939 int samples, live, ret = 0, swlim, isamp, osamp, rpos, total = 0;
940 struct st_sample *src, *dst = sw->buf;
941
942 rpos = audio_pcm_sw_get_rpos_in (sw) % hw->samples;
943
944 live = hw->total_samples_captured - sw->total_hw_samples_acquired;
945 if (audio_bug(__func__, live < 0 || live > hw->samples)) {
946 dolog ("live_in=%d hw->samples=%d\n", live, hw->samples);
947 return 0;
948 }
949
950 samples = size >> sw->info.shift;
951 if (!live) {
952 return 0;
953 }
954
955 swlim = (live * sw->ratio) >> 32;
956 swlim = audio_MIN (swlim, samples);
957
958 while (swlim) {
959 src = hw->conv_buf + rpos;
960 isamp = hw->wpos - rpos;
961 /* XXX: <= ? */
962 if (isamp <= 0) {
963 isamp = hw->samples - rpos;
964 }
965
966 if (!isamp) {
967 break;
968 }
969 osamp = swlim;
970
971 if (audio_bug(__func__, osamp < 0)) {
972 dolog ("osamp=%d\n", osamp);
973 return 0;
974 }
975
976 st_rate_flow (sw->rate, src, dst, &isamp, &osamp);
977 swlim -= osamp;
978 rpos = (rpos + isamp) % hw->samples;
979 dst += osamp;
980 ret += osamp;
981 total += isamp;
982 }
983
984 if (!(hw->ctl_caps & VOICE_VOLUME_CAP)) {
985 mixeng_volume (sw->buf, ret, &sw->vol);
986 }
987
988 sw->clip (buf, sw->buf, ret);
989 sw->total_hw_samples_acquired += total;
990 return ret << sw->info.shift;
991 }
992
993 /*
994 * Hard voice (playback)
995 */
996 static int audio_pcm_hw_find_min_out (HWVoiceOut *hw, int *nb_livep)
997 {
998 SWVoiceOut *sw;
999 int m = INT_MAX;
1000 int nb_live = 0;
1001
1002 for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) {
1003 if (sw->active || !sw->empty) {
1004 m = audio_MIN (m, sw->total_hw_samples_mixed);
1005 nb_live += 1;
1006 }
1007 }
1008
1009 *nb_livep = nb_live;
1010 return m;
1011 }
1012
1013 static int audio_pcm_hw_get_live_out (HWVoiceOut *hw, int *nb_live)
1014 {
1015 int smin;
1016 int nb_live1;
1017
1018 smin = audio_pcm_hw_find_min_out (hw, &nb_live1);
1019 if (nb_live) {
1020 *nb_live = nb_live1;
1021 }
1022
1023 if (nb_live1) {
1024 int live = smin;
1025
1026 if (audio_bug(__func__, live < 0 || live > hw->samples)) {
1027 dolog ("live=%d hw->samples=%d\n", live, hw->samples);
1028 return 0;
1029 }
1030 return live;
1031 }
1032 return 0;
1033 }
1034
1035 /*
1036 * Soft voice (playback)
1037 */
1038 int audio_pcm_sw_write (SWVoiceOut *sw, void *buf, int size)
1039 {
1040 int hwsamples, samples, isamp, osamp, wpos, live, dead, left, swlim, blck;
1041 int ret = 0, pos = 0, total = 0;
1042
1043 if (!sw) {
1044 return size;
1045 }
1046
1047 hwsamples = sw->hw->samples;
1048
1049 live = sw->total_hw_samples_mixed;
1050 if (audio_bug(__func__, live < 0 || live > hwsamples)) {
1051 dolog ("live=%d hw->samples=%d\n", live, hwsamples);
1052 return 0;
1053 }
1054
1055 if (live == hwsamples) {
1056 #ifdef DEBUG_OUT
1057 dolog ("%s is full %d\n", sw->name, live);
1058 #endif
1059 return 0;
1060 }
1061
1062 wpos = (sw->hw->rpos + live) % hwsamples;
1063 samples = size >> sw->info.shift;
1064
1065 dead = hwsamples - live;
1066 swlim = ((int64_t) dead << 32) / sw->ratio;
1067 swlim = audio_MIN (swlim, samples);
1068 if (swlim) {
1069 sw->conv (sw->buf, buf, swlim);
1070
1071 if (!(sw->hw->ctl_caps & VOICE_VOLUME_CAP)) {
1072 mixeng_volume (sw->buf, swlim, &sw->vol);
1073 }
1074 }
1075
1076 while (swlim) {
1077 dead = hwsamples - live;
1078 left = hwsamples - wpos;
1079 blck = audio_MIN (dead, left);
1080 if (!blck) {
1081 break;
1082 }
1083 isamp = swlim;
1084 osamp = blck;
1085 st_rate_flow_mix (
1086 sw->rate,
1087 sw->buf + pos,
1088 sw->hw->mix_buf + wpos,
1089 &isamp,
1090 &osamp
1091 );
1092 ret += isamp;
1093 swlim -= isamp;
1094 pos += isamp;
1095 live += osamp;
1096 wpos = (wpos + osamp) % hwsamples;
1097 total += osamp;
1098 }
1099
1100 sw->total_hw_samples_mixed += total;
1101 sw->empty = sw->total_hw_samples_mixed == 0;
1102
1103 #ifdef DEBUG_OUT
1104 dolog (
1105 "%s: write size %d ret %d total sw %d\n",
1106 SW_NAME (sw),
1107 size >> sw->info.shift,
1108 ret,
1109 sw->total_hw_samples_mixed
1110 );
1111 #endif
1112
1113 return ret << sw->info.shift;
1114 }
1115
1116 #ifdef DEBUG_AUDIO
1117 static void audio_pcm_print_info (const char *cap, struct audio_pcm_info *info)
1118 {
1119 dolog ("%s: bits %d, sign %d, freq %d, nchan %d\n",
1120 cap, info->bits, info->sign, info->freq, info->nchannels);
1121 }
1122 #endif
1123
1124 #define DAC
1125 #include "audio_template.h"
1126 #undef DAC
1127 #include "audio_template.h"
1128
1129 /*
1130 * Timer
1131 */
1132 static int audio_is_timer_needed (void)
1133 {
1134 HWVoiceIn *hwi = NULL;
1135 HWVoiceOut *hwo = NULL;
1136
1137 while ((hwo = audio_pcm_hw_find_any_enabled_out (hwo))) {
1138 if (!hwo->poll_mode) return 1;
1139 }
1140 while ((hwi = audio_pcm_hw_find_any_enabled_in (hwi))) {
1141 if (!hwi->poll_mode) return 1;
1142 }
1143 return 0;
1144 }
1145
1146 static void audio_reset_timer (AudioState *s)
1147 {
1148 if (audio_is_timer_needed ()) {
1149 timer_mod_anticipate_ns(s->ts,
1150 qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) + conf.period.ticks);
1151 }
1152 else {
1153 timer_del (s->ts);
1154 }
1155 }
1156
1157 static void audio_timer (void *opaque)
1158 {
1159 audio_run ("timer");
1160 audio_reset_timer (opaque);
1161 }
1162
1163 /*
1164 * Public API
1165 */
1166 int AUD_write (SWVoiceOut *sw, void *buf, int size)
1167 {
1168 if (!sw) {
1169 /* XXX: Consider options */
1170 return size;
1171 }
1172
1173 if (!sw->hw->enabled) {
1174 dolog ("Writing to disabled voice %s\n", SW_NAME (sw));
1175 return 0;
1176 }
1177
1178 return sw->hw->pcm_ops->write(sw, buf, size);
1179 }
1180
1181 int AUD_read (SWVoiceIn *sw, void *buf, int size)
1182 {
1183 if (!sw) {
1184 /* XXX: Consider options */
1185 return size;
1186 }
1187
1188 if (!sw->hw->enabled) {
1189 dolog ("Reading from disabled voice %s\n", SW_NAME (sw));
1190 return 0;
1191 }
1192
1193 return sw->hw->pcm_ops->read(sw, buf, size);
1194 }
1195
1196 int AUD_get_buffer_size_out (SWVoiceOut *sw)
1197 {
1198 return sw->hw->samples << sw->hw->info.shift;
1199 }
1200
1201 void AUD_set_active_out (SWVoiceOut *sw, int on)
1202 {
1203 HWVoiceOut *hw;
1204
1205 if (!sw) {
1206 return;
1207 }
1208
1209 hw = sw->hw;
1210 if (sw->active != on) {
1211 AudioState *s = &glob_audio_state;
1212 SWVoiceOut *temp_sw;
1213 SWVoiceCap *sc;
1214
1215 if (on) {
1216 hw->pending_disable = 0;
1217 if (!hw->enabled) {
1218 hw->enabled = 1;
1219 if (s->vm_running) {
1220 hw->pcm_ops->ctl_out (hw, VOICE_ENABLE, conf.try_poll_out);
1221 audio_reset_timer (s);
1222 }
1223 }
1224 }
1225 else {
1226 if (hw->enabled) {
1227 int nb_active = 0;
1228
1229 for (temp_sw = hw->sw_head.lh_first; temp_sw;
1230 temp_sw = temp_sw->entries.le_next) {
1231 nb_active += temp_sw->active != 0;
1232 }
1233
1234 hw->pending_disable = nb_active == 1;
1235 }
1236 }
1237
1238 for (sc = hw->cap_head.lh_first; sc; sc = sc->entries.le_next) {
1239 sc->sw.active = hw->enabled;
1240 if (hw->enabled) {
1241 audio_capture_maybe_changed (sc->cap, 1);
1242 }
1243 }
1244 sw->active = on;
1245 }
1246 }
1247
1248 void AUD_set_active_in (SWVoiceIn *sw, int on)
1249 {
1250 HWVoiceIn *hw;
1251
1252 if (!sw) {
1253 return;
1254 }
1255
1256 hw = sw->hw;
1257 if (sw->active != on) {
1258 AudioState *s = &glob_audio_state;
1259 SWVoiceIn *temp_sw;
1260
1261 if (on) {
1262 if (!hw->enabled) {
1263 hw->enabled = 1;
1264 if (s->vm_running) {
1265 hw->pcm_ops->ctl_in (hw, VOICE_ENABLE, conf.try_poll_in);
1266 audio_reset_timer (s);
1267 }
1268 }
1269 sw->total_hw_samples_acquired = hw->total_samples_captured;
1270 }
1271 else {
1272 if (hw->enabled) {
1273 int nb_active = 0;
1274
1275 for (temp_sw = hw->sw_head.lh_first; temp_sw;
1276 temp_sw = temp_sw->entries.le_next) {
1277 nb_active += temp_sw->active != 0;
1278 }
1279
1280 if (nb_active == 1) {
1281 hw->enabled = 0;
1282 hw->pcm_ops->ctl_in (hw, VOICE_DISABLE);
1283 }
1284 }
1285 }
1286 sw->active = on;
1287 }
1288 }
1289
1290 static int audio_get_avail (SWVoiceIn *sw)
1291 {
1292 int live;
1293
1294 if (!sw) {
1295 return 0;
1296 }
1297
1298 live = sw->hw->total_samples_captured - sw->total_hw_samples_acquired;
1299 if (audio_bug(__func__, live < 0 || live > sw->hw->samples)) {
1300 dolog ("live=%d sw->hw->samples=%d\n", live, sw->hw->samples);
1301 return 0;
1302 }
1303
1304 ldebug (
1305 "%s: get_avail live %d ret %" PRId64 "\n",
1306 SW_NAME (sw),
1307 live, (((int64_t) live << 32) / sw->ratio) << sw->info.shift
1308 );
1309
1310 return (((int64_t) live << 32) / sw->ratio) << sw->info.shift;
1311 }
1312
1313 static int audio_get_free (SWVoiceOut *sw)
1314 {
1315 int live, dead;
1316
1317 if (!sw) {
1318 return 0;
1319 }
1320
1321 live = sw->total_hw_samples_mixed;
1322
1323 if (audio_bug(__func__, live < 0 || live > sw->hw->samples)) {
1324 dolog ("live=%d sw->hw->samples=%d\n", live, sw->hw->samples);
1325 return 0;
1326 }
1327
1328 dead = sw->hw->samples - live;
1329
1330 #ifdef DEBUG_OUT
1331 dolog ("%s: get_free live %d dead %d ret %" PRId64 "\n",
1332 SW_NAME (sw),
1333 live, dead, (((int64_t) dead << 32) / sw->ratio) << sw->info.shift);
1334 #endif
1335
1336 return (((int64_t) dead << 32) / sw->ratio) << sw->info.shift;
1337 }
1338
1339 static void audio_capture_mix_and_clear (HWVoiceOut *hw, int rpos, int samples)
1340 {
1341 int n;
1342
1343 if (hw->enabled) {
1344 SWVoiceCap *sc;
1345
1346 for (sc = hw->cap_head.lh_first; sc; sc = sc->entries.le_next) {
1347 SWVoiceOut *sw = &sc->sw;
1348 int rpos2 = rpos;
1349
1350 n = samples;
1351 while (n) {
1352 int till_end_of_hw = hw->samples - rpos2;
1353 int to_write = audio_MIN (till_end_of_hw, n);
1354 int bytes = to_write << hw->info.shift;
1355 int written;
1356
1357 sw->buf = hw->mix_buf + rpos2;
1358 written = audio_pcm_sw_write (sw, NULL, bytes);
1359 if (written - bytes) {
1360 dolog ("Could not mix %d bytes into a capture "
1361 "buffer, mixed %d\n",
1362 bytes, written);
1363 break;
1364 }
1365 n -= to_write;
1366 rpos2 = (rpos2 + to_write) % hw->samples;
1367 }
1368 }
1369 }
1370
1371 n = audio_MIN (samples, hw->samples - rpos);
1372 mixeng_clear (hw->mix_buf + rpos, n);
1373 mixeng_clear (hw->mix_buf, samples - n);
1374 }
1375
1376 static void audio_run_out (AudioState *s)
1377 {
1378 HWVoiceOut *hw = NULL;
1379 SWVoiceOut *sw;
1380
1381 while ((hw = audio_pcm_hw_find_any_enabled_out (hw))) {
1382 int played;
1383 int live, free, nb_live, cleanup_required, prev_rpos;
1384
1385 live = audio_pcm_hw_get_live_out (hw, &nb_live);
1386 if (!nb_live) {
1387 live = 0;
1388 }
1389
1390 if (audio_bug(__func__, live < 0 || live > hw->samples)) {
1391 dolog ("live=%d hw->samples=%d\n", live, hw->samples);
1392 continue;
1393 }
1394
1395 if (hw->pending_disable && !nb_live) {
1396 SWVoiceCap *sc;
1397 #ifdef DEBUG_OUT
1398 dolog ("Disabling voice\n");
1399 #endif
1400 hw->enabled = 0;
1401 hw->pending_disable = 0;
1402 hw->pcm_ops->ctl_out (hw, VOICE_DISABLE);
1403 for (sc = hw->cap_head.lh_first; sc; sc = sc->entries.le_next) {
1404 sc->sw.active = 0;
1405 audio_recalc_and_notify_capture (sc->cap);
1406 }
1407 continue;
1408 }
1409
1410 if (!live) {
1411 for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) {
1412 if (sw->active) {
1413 free = audio_get_free (sw);
1414 if (free > 0) {
1415 sw->callback.fn (sw->callback.opaque, free);
1416 }
1417 }
1418 }
1419 continue;
1420 }
1421
1422 prev_rpos = hw->rpos;
1423 played = hw->pcm_ops->run_out (hw, live);
1424 replay_audio_out(&played);
1425 if (audio_bug(__func__, hw->rpos >= hw->samples)) {
1426 dolog ("hw->rpos=%d hw->samples=%d played=%d\n",
1427 hw->rpos, hw->samples, played);
1428 hw->rpos = 0;
1429 }
1430
1431 #ifdef DEBUG_OUT
1432 dolog ("played=%d\n", played);
1433 #endif
1434
1435 if (played) {
1436 hw->ts_helper += played;
1437 audio_capture_mix_and_clear (hw, prev_rpos, played);
1438 }
1439
1440 cleanup_required = 0;
1441 for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) {
1442 if (!sw->active && sw->empty) {
1443 continue;
1444 }
1445
1446 if (audio_bug(__func__, played > sw->total_hw_samples_mixed)) {
1447 dolog ("played=%d sw->total_hw_samples_mixed=%d\n",
1448 played, sw->total_hw_samples_mixed);
1449 played = sw->total_hw_samples_mixed;
1450 }
1451
1452 sw->total_hw_samples_mixed -= played;
1453
1454 if (!sw->total_hw_samples_mixed) {
1455 sw->empty = 1;
1456 cleanup_required |= !sw->active && !sw->callback.fn;
1457 }
1458
1459 if (sw->active) {
1460 free = audio_get_free (sw);
1461 if (free > 0) {
1462 sw->callback.fn (sw->callback.opaque, free);
1463 }
1464 }
1465 }
1466
1467 if (cleanup_required) {
1468 SWVoiceOut *sw1;
1469
1470 sw = hw->sw_head.lh_first;
1471 while (sw) {
1472 sw1 = sw->entries.le_next;
1473 if (!sw->active && !sw->callback.fn) {
1474 audio_close_out (sw);
1475 }
1476 sw = sw1;
1477 }
1478 }
1479 }
1480 }
1481
1482 static void audio_run_in (AudioState *s)
1483 {
1484 HWVoiceIn *hw = NULL;
1485
1486 while ((hw = audio_pcm_hw_find_any_enabled_in (hw))) {
1487 SWVoiceIn *sw;
1488 int captured = 0, min;
1489
1490 if (replay_mode != REPLAY_MODE_PLAY) {
1491 captured = hw->pcm_ops->run_in(hw);
1492 }
1493 replay_audio_in(&captured, hw->conv_buf, &hw->wpos, hw->samples);
1494
1495 min = audio_pcm_hw_find_min_in (hw);
1496 hw->total_samples_captured += captured - min;
1497 hw->ts_helper += captured;
1498
1499 for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) {
1500 sw->total_hw_samples_acquired -= min;
1501
1502 if (sw->active) {
1503 int avail;
1504
1505 avail = audio_get_avail (sw);
1506 if (avail > 0) {
1507 sw->callback.fn (sw->callback.opaque, avail);
1508 }
1509 }
1510 }
1511 }
1512 }
1513
1514 static void audio_run_capture (AudioState *s)
1515 {
1516 CaptureVoiceOut *cap;
1517
1518 for (cap = s->cap_head.lh_first; cap; cap = cap->entries.le_next) {
1519 int live, rpos, captured;
1520 HWVoiceOut *hw = &cap->hw;
1521 SWVoiceOut *sw;
1522
1523 captured = live = audio_pcm_hw_get_live_out (hw, NULL);
1524 rpos = hw->rpos;
1525 while (live) {
1526 int left = hw->samples - rpos;
1527 int to_capture = audio_MIN (live, left);
1528 struct st_sample *src;
1529 struct capture_callback *cb;
1530
1531 src = hw->mix_buf + rpos;
1532 hw->clip (cap->buf, src, to_capture);
1533 mixeng_clear (src, to_capture);
1534
1535 for (cb = cap->cb_head.lh_first; cb; cb = cb->entries.le_next) {
1536 cb->ops.capture (cb->opaque, cap->buf,
1537 to_capture << hw->info.shift);
1538 }
1539 rpos = (rpos + to_capture) % hw->samples;
1540 live -= to_capture;
1541 }
1542 hw->rpos = rpos;
1543
1544 for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) {
1545 if (!sw->active && sw->empty) {
1546 continue;
1547 }
1548
1549 if (audio_bug(__func__, captured > sw->total_hw_samples_mixed)) {
1550 dolog ("captured=%d sw->total_hw_samples_mixed=%d\n",
1551 captured, sw->total_hw_samples_mixed);
1552 captured = sw->total_hw_samples_mixed;
1553 }
1554
1555 sw->total_hw_samples_mixed -= captured;
1556 sw->empty = sw->total_hw_samples_mixed == 0;
1557 }
1558 }
1559 }
1560
1561 void audio_run (const char *msg)
1562 {
1563 AudioState *s = &glob_audio_state;
1564
1565 audio_run_out (s);
1566 audio_run_in (s);
1567 audio_run_capture (s);
1568 #ifdef DEBUG_POLL
1569 {
1570 static double prevtime;
1571 double currtime;
1572 struct timeval tv;
1573
1574 if (gettimeofday (&tv, NULL)) {
1575 perror ("audio_run: gettimeofday");
1576 return;
1577 }
1578
1579 currtime = tv.tv_sec + tv.tv_usec * 1e-6;
1580 dolog ("Elapsed since last %s: %f\n", msg, currtime - prevtime);
1581 prevtime = currtime;
1582 }
1583 #endif
1584 }
1585
1586 static struct audio_option audio_options[] = {
1587 /* DAC */
1588 {
1589 .name = "DAC_FIXED_SETTINGS",
1590 .tag = AUD_OPT_BOOL,
1591 .valp = &conf.fixed_out.enabled,
1592 .descr = "Use fixed settings for host DAC"
1593 },
1594 {
1595 .name = "DAC_FIXED_FREQ",
1596 .tag = AUD_OPT_INT,
1597 .valp = &conf.fixed_out.settings.freq,
1598 .descr = "Frequency for fixed host DAC"
1599 },
1600 {
1601 .name = "DAC_FIXED_FMT",
1602 .tag = AUD_OPT_FMT,
1603 .valp = &conf.fixed_out.settings.fmt,
1604 .descr = "Format for fixed host DAC"
1605 },
1606 {
1607 .name = "DAC_FIXED_CHANNELS",
1608 .tag = AUD_OPT_INT,
1609 .valp = &conf.fixed_out.settings.nchannels,
1610 .descr = "Number of channels for fixed DAC (1 - mono, 2 - stereo)"
1611 },
1612 {
1613 .name = "DAC_VOICES",
1614 .tag = AUD_OPT_INT,
1615 .valp = &conf.fixed_out.nb_voices,
1616 .descr = "Number of voices for DAC"
1617 },
1618 {
1619 .name = "DAC_TRY_POLL",
1620 .tag = AUD_OPT_BOOL,
1621 .valp = &conf.try_poll_out,
1622 .descr = "Attempt using poll mode for DAC"
1623 },
1624 /* ADC */
1625 {
1626 .name = "ADC_FIXED_SETTINGS",
1627 .tag = AUD_OPT_BOOL,
1628 .valp = &conf.fixed_in.enabled,
1629 .descr = "Use fixed settings for host ADC"
1630 },
1631 {
1632 .name = "ADC_FIXED_FREQ",
1633 .tag = AUD_OPT_INT,
1634 .valp = &conf.fixed_in.settings.freq,
1635 .descr = "Frequency for fixed host ADC"
1636 },
1637 {
1638 .name = "ADC_FIXED_FMT",
1639 .tag = AUD_OPT_FMT,
1640 .valp = &conf.fixed_in.settings.fmt,
1641 .descr = "Format for fixed host ADC"
1642 },
1643 {
1644 .name = "ADC_FIXED_CHANNELS",
1645 .tag = AUD_OPT_INT,
1646 .valp = &conf.fixed_in.settings.nchannels,
1647 .descr = "Number of channels for fixed ADC (1 - mono, 2 - stereo)"
1648 },
1649 {
1650 .name = "ADC_VOICES",
1651 .tag = AUD_OPT_INT,
1652 .valp = &conf.fixed_in.nb_voices,
1653 .descr = "Number of voices for ADC"
1654 },
1655 {
1656 .name = "ADC_TRY_POLL",
1657 .tag = AUD_OPT_BOOL,
1658 .valp = &conf.try_poll_in,
1659 .descr = "Attempt using poll mode for ADC"
1660 },
1661 /* Misc */
1662 {
1663 .name = "TIMER_PERIOD",
1664 .tag = AUD_OPT_INT,
1665 .valp = &conf.period.hertz,
1666 .descr = "Timer period in HZ (0 - use lowest possible)"
1667 },
1668 { /* End of list */ }
1669 };
1670
1671 static void audio_pp_nb_voices (const char *typ, int nb)
1672 {
1673 switch (nb) {
1674 case 0:
1675 printf ("Does not support %s\n", typ);
1676 break;
1677 case 1:
1678 printf ("One %s voice\n", typ);
1679 break;
1680 case INT_MAX:
1681 printf ("Theoretically supports many %s voices\n", typ);
1682 break;
1683 default:
1684 printf ("Theoretically supports up to %d %s voices\n", nb, typ);
1685 break;
1686 }
1687
1688 }
1689
1690 void AUD_help (void)
1691 {
1692 struct audio_driver *d;
1693
1694 /* make sure we print the help text for modular drivers too */
1695 audio_module_load_all();
1696
1697 audio_process_options ("AUDIO", audio_options);
1698 QLIST_FOREACH(d, &audio_drivers, next) {
1699 if (d->options) {
1700 audio_process_options (d->name, d->options);
1701 }
1702 }
1703
1704 printf ("Audio options:\n");
1705 audio_print_options ("AUDIO", audio_options);
1706 printf ("\n");
1707
1708 printf ("Available drivers:\n");
1709
1710 QLIST_FOREACH(d, &audio_drivers, next) {
1711
1712 printf ("Name: %s\n", d->name);
1713 printf ("Description: %s\n", d->descr);
1714
1715 audio_pp_nb_voices ("playback", d->max_voices_out);
1716 audio_pp_nb_voices ("capture", d->max_voices_in);
1717
1718 if (d->options) {
1719 printf ("Options:\n");
1720 audio_print_options (d->name, d->options);
1721 }
1722 else {
1723 printf ("No options\n");
1724 }
1725 printf ("\n");
1726 }
1727
1728 printf (
1729 "Options are settable through environment variables.\n"
1730 "Example:\n"
1731 #ifdef _WIN32
1732 " set QEMU_AUDIO_DRV=wav\n"
1733 " set QEMU_WAV_PATH=c:\\tune.wav\n"
1734 #else
1735 " export QEMU_AUDIO_DRV=wav\n"
1736 " export QEMU_WAV_PATH=$HOME/tune.wav\n"
1737 "(for csh replace export with setenv in the above)\n"
1738 #endif
1739 " qemu ...\n\n"
1740 );
1741 }
1742
1743 static int audio_driver_init (AudioState *s, struct audio_driver *drv)
1744 {
1745 if (drv->options) {
1746 audio_process_options (drv->name, drv->options);
1747 }
1748 s->drv_opaque = drv->init ();
1749
1750 if (s->drv_opaque) {
1751 audio_init_nb_voices_out (drv);
1752 audio_init_nb_voices_in (drv);
1753 s->drv = drv;
1754 return 0;
1755 }
1756 else {
1757 dolog ("Could not init `%s' audio driver\n", drv->name);
1758 return -1;
1759 }
1760 }
1761
1762 static void audio_vm_change_state_handler (void *opaque, int running,
1763 RunState state)
1764 {
1765 AudioState *s = opaque;
1766 HWVoiceOut *hwo = NULL;
1767 HWVoiceIn *hwi = NULL;
1768 int op = running ? VOICE_ENABLE : VOICE_DISABLE;
1769
1770 s->vm_running = running;
1771 while ((hwo = audio_pcm_hw_find_any_enabled_out (hwo))) {
1772 hwo->pcm_ops->ctl_out (hwo, op, conf.try_poll_out);
1773 }
1774
1775 while ((hwi = audio_pcm_hw_find_any_enabled_in (hwi))) {
1776 hwi->pcm_ops->ctl_in (hwi, op, conf.try_poll_in);
1777 }
1778 audio_reset_timer (s);
1779 }
1780
1781 static bool is_cleaning_up;
1782
1783 bool audio_is_cleaning_up(void)
1784 {
1785 return is_cleaning_up;
1786 }
1787
1788 void audio_cleanup(void)
1789 {
1790 AudioState *s = &glob_audio_state;
1791 HWVoiceOut *hwo, *hwon;
1792 HWVoiceIn *hwi, *hwin;
1793
1794 is_cleaning_up = true;
1795 QLIST_FOREACH_SAFE(hwo, &glob_audio_state.hw_head_out, entries, hwon) {
1796 SWVoiceCap *sc;
1797
1798 if (hwo->enabled) {
1799 hwo->pcm_ops->ctl_out (hwo, VOICE_DISABLE);
1800 }
1801 hwo->pcm_ops->fini_out (hwo);
1802
1803 for (sc = hwo->cap_head.lh_first; sc; sc = sc->entries.le_next) {
1804 CaptureVoiceOut *cap = sc->cap;
1805 struct capture_callback *cb;
1806
1807 for (cb = cap->cb_head.lh_first; cb; cb = cb->entries.le_next) {
1808 cb->ops.destroy (cb->opaque);
1809 }
1810 }
1811 QLIST_REMOVE(hwo, entries);
1812 }
1813
1814 QLIST_FOREACH_SAFE(hwi, &glob_audio_state.hw_head_in, entries, hwin) {
1815 if (hwi->enabled) {
1816 hwi->pcm_ops->ctl_in (hwi, VOICE_DISABLE);
1817 }
1818 hwi->pcm_ops->fini_in (hwi);
1819 QLIST_REMOVE(hwi, entries);
1820 }
1821
1822 if (s->drv) {
1823 s->drv->fini (s->drv_opaque);
1824 s->drv = NULL;
1825 }
1826 }
1827
1828 static const VMStateDescription vmstate_audio = {
1829 .name = "audio",
1830 .version_id = 1,
1831 .minimum_version_id = 1,
1832 .fields = (VMStateField[]) {
1833 VMSTATE_END_OF_LIST()
1834 }
1835 };
1836
1837 static void audio_init (void)
1838 {
1839 size_t i;
1840 int done = 0;
1841 const char *drvname;
1842 VMChangeStateEntry *e;
1843 AudioState *s = &glob_audio_state;
1844 struct audio_driver *driver;
1845
1846 if (s->drv) {
1847 return;
1848 }
1849
1850 QLIST_INIT (&s->hw_head_out);
1851 QLIST_INIT (&s->hw_head_in);
1852 QLIST_INIT (&s->cap_head);
1853 atexit(audio_cleanup);
1854
1855 s->ts = timer_new_ns(QEMU_CLOCK_VIRTUAL, audio_timer, s);
1856
1857 audio_process_options ("AUDIO", audio_options);
1858
1859 s->nb_hw_voices_out = conf.fixed_out.nb_voices;
1860 s->nb_hw_voices_in = conf.fixed_in.nb_voices;
1861
1862 if (s->nb_hw_voices_out <= 0) {
1863 dolog ("Bogus number of playback voices %d, setting to 1\n",
1864 s->nb_hw_voices_out);
1865 s->nb_hw_voices_out = 1;
1866 }
1867
1868 if (s->nb_hw_voices_in <= 0) {
1869 dolog ("Bogus number of capture voices %d, setting to 0\n",
1870 s->nb_hw_voices_in);
1871 s->nb_hw_voices_in = 0;
1872 }
1873
1874 {
1875 int def;
1876 drvname = audio_get_conf_str ("QEMU_AUDIO_DRV", NULL, &def);
1877 }
1878
1879 if (drvname) {
1880 driver = audio_driver_lookup(drvname);
1881 if (driver) {
1882 done = !audio_driver_init(s, driver);
1883 } else {
1884 dolog ("Unknown audio driver `%s'\n", drvname);
1885 dolog ("Run with -audio-help to list available drivers\n");
1886 }
1887 }
1888
1889 if (!done) {
1890 for (i = 0; !done && i < ARRAY_SIZE(audio_prio_list); i++) {
1891 driver = audio_driver_lookup(audio_prio_list[i]);
1892 if (driver && driver->can_be_default) {
1893 done = !audio_driver_init(s, driver);
1894 }
1895 }
1896 }
1897
1898 if (!done) {
1899 driver = audio_driver_lookup("none");
1900 done = !audio_driver_init(s, driver);
1901 assert(done);
1902 dolog("warning: Using timer based audio emulation\n");
1903 }
1904
1905 if (conf.period.hertz <= 0) {
1906 if (conf.period.hertz < 0) {
1907 dolog ("warning: Timer period is negative - %d "
1908 "treating as zero\n",
1909 conf.period.hertz);
1910 }
1911 conf.period.ticks = 1;
1912 } else {
1913 conf.period.ticks = NANOSECONDS_PER_SECOND / conf.period.hertz;
1914 }
1915
1916 e = qemu_add_vm_change_state_handler (audio_vm_change_state_handler, s);
1917 if (!e) {
1918 dolog ("warning: Could not register change state handler\n"
1919 "(Audio can continue looping even after stopping the VM)\n");
1920 }
1921
1922 QLIST_INIT (&s->card_head);
1923 vmstate_register (NULL, 0, &vmstate_audio, s);
1924 }
1925
1926 void AUD_register_card (const char *name, QEMUSoundCard *card)
1927 {
1928 audio_init ();
1929 card->name = g_strdup (name);
1930 memset (&card->entries, 0, sizeof (card->entries));
1931 QLIST_INSERT_HEAD (&glob_audio_state.card_head, card, entries);
1932 }
1933
1934 void AUD_remove_card (QEMUSoundCard *card)
1935 {
1936 QLIST_REMOVE (card, entries);
1937 g_free (card->name);
1938 }
1939
1940
1941 CaptureVoiceOut *AUD_add_capture (
1942 struct audsettings *as,
1943 struct audio_capture_ops *ops,
1944 void *cb_opaque
1945 )
1946 {
1947 AudioState *s = &glob_audio_state;
1948 CaptureVoiceOut *cap;
1949 struct capture_callback *cb;
1950
1951 if (audio_validate_settings (as)) {
1952 dolog ("Invalid settings were passed when trying to add capture\n");
1953 audio_print_settings (as);
1954 goto err0;
1955 }
1956
1957 cb = audio_calloc(__func__, 1, sizeof(*cb));
1958 if (!cb) {
1959 dolog ("Could not allocate capture callback information, size %zu\n",
1960 sizeof (*cb));
1961 goto err0;
1962 }
1963 cb->ops = *ops;
1964 cb->opaque = cb_opaque;
1965
1966 cap = audio_pcm_capture_find_specific (as);
1967 if (cap) {
1968 QLIST_INSERT_HEAD (&cap->cb_head, cb, entries);
1969 return cap;
1970 }
1971 else {
1972 HWVoiceOut *hw;
1973 CaptureVoiceOut *cap;
1974
1975 cap = audio_calloc(__func__, 1, sizeof(*cap));
1976 if (!cap) {
1977 dolog ("Could not allocate capture voice, size %zu\n",
1978 sizeof (*cap));
1979 goto err1;
1980 }
1981
1982 hw = &cap->hw;
1983 QLIST_INIT (&hw->sw_head);
1984 QLIST_INIT (&cap->cb_head);
1985
1986 /* XXX find a more elegant way */
1987 hw->samples = 4096 * 4;
1988 hw->mix_buf = audio_calloc(__func__, hw->samples,
1989 sizeof(struct st_sample));
1990 if (!hw->mix_buf) {
1991 dolog ("Could not allocate capture mix buffer (%d samples)\n",
1992 hw->samples);
1993 goto err2;
1994 }
1995
1996 audio_pcm_init_info (&hw->info, as);
1997
1998 cap->buf = audio_calloc(__func__, hw->samples, 1 << hw->info.shift);
1999 if (!cap->buf) {
2000 dolog ("Could not allocate capture buffer "
2001 "(%d samples, each %d bytes)\n",
2002 hw->samples, 1 << hw->info.shift);
2003 goto err3;
2004 }
2005
2006 hw->clip = mixeng_clip
2007 [hw->info.nchannels == 2]
2008 [hw->info.sign]
2009 [hw->info.swap_endianness]
2010 [audio_bits_to_index (hw->info.bits)];
2011
2012 QLIST_INSERT_HEAD (&s->cap_head, cap, entries);
2013 QLIST_INSERT_HEAD (&cap->cb_head, cb, entries);
2014
2015 QLIST_FOREACH(hw, &glob_audio_state.hw_head_out, entries) {
2016 audio_attach_capture (hw);
2017 }
2018 return cap;
2019
2020 err3:
2021 g_free (cap->hw.mix_buf);
2022 err2:
2023 g_free (cap);
2024 err1:
2025 g_free (cb);
2026 err0:
2027 return NULL;
2028 }
2029 }
2030
2031 void AUD_del_capture (CaptureVoiceOut *cap, void *cb_opaque)
2032 {
2033 struct capture_callback *cb;
2034
2035 for (cb = cap->cb_head.lh_first; cb; cb = cb->entries.le_next) {
2036 if (cb->opaque == cb_opaque) {
2037 cb->ops.destroy (cb_opaque);
2038 QLIST_REMOVE (cb, entries);
2039 g_free (cb);
2040
2041 if (!cap->cb_head.lh_first) {
2042 SWVoiceOut *sw = cap->hw.sw_head.lh_first, *sw1;
2043
2044 while (sw) {
2045 SWVoiceCap *sc = (SWVoiceCap *) sw;
2046 #ifdef DEBUG_CAPTURE
2047 dolog ("freeing %s\n", sw->name);
2048 #endif
2049
2050 sw1 = sw->entries.le_next;
2051 if (sw->rate) {
2052 st_rate_stop (sw->rate);
2053 sw->rate = NULL;
2054 }
2055 QLIST_REMOVE (sw, entries);
2056 QLIST_REMOVE (sc, entries);
2057 g_free (sc);
2058 sw = sw1;
2059 }
2060 QLIST_REMOVE (cap, entries);
2061 g_free (cap->hw.mix_buf);
2062 g_free (cap->buf);
2063 g_free (cap);
2064 }
2065 return;
2066 }
2067 }
2068 }
2069
2070 void AUD_set_volume_out (SWVoiceOut *sw, int mute, uint8_t lvol, uint8_t rvol)
2071 {
2072 if (sw) {
2073 HWVoiceOut *hw = sw->hw;
2074
2075 sw->vol.mute = mute;
2076 sw->vol.l = nominal_volume.l * lvol / 255;
2077 sw->vol.r = nominal_volume.r * rvol / 255;
2078
2079 if (hw->pcm_ops->ctl_out) {
2080 hw->pcm_ops->ctl_out (hw, VOICE_VOLUME, sw);
2081 }
2082 }
2083 }
2084
2085 void AUD_set_volume_in (SWVoiceIn *sw, int mute, uint8_t lvol, uint8_t rvol)
2086 {
2087 if (sw) {
2088 HWVoiceIn *hw = sw->hw;
2089
2090 sw->vol.mute = mute;
2091 sw->vol.l = nominal_volume.l * lvol / 255;
2092 sw->vol.r = nominal_volume.r * rvol / 255;
2093
2094 if (hw->pcm_ops->ctl_in) {
2095 hw->pcm_ops->ctl_in (hw, VOICE_VOLUME, sw);
2096 }
2097 }
2098 }
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