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xen_disk: remove use of grant map/unmap
[qemu.git] / audio / audio.c
blob6eccdb17eebbc10531907b00d4e3fd61faf20504
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) {
339 *defaultp = 0;
340 val = atoi (strval);
341 return val;
342 }
343 else {
344 *defaultp = 1;
345 return defval;
346 }
347 }
348
349 static const char *audio_get_conf_str (const char *key,
350 const char *defval,
351 int *defaultp)
352 {
353 const char *val = getenv (key);
354 if (!val) {
355 *defaultp = 1;
356 return defval;
357 }
358 else {
359 *defaultp = 0;
360 return val;
361 }
362 }
363
364 void AUD_vlog (const char *cap, const char *fmt, va_list ap)
365 {
366 if (cap) {
367 fprintf(stderr, "%s: ", cap);
368 }
369
370 vfprintf(stderr, fmt, ap);
371 }
372
373 void AUD_log (const char *cap, const char *fmt, ...)
374 {
375 va_list ap;
376
377 va_start (ap, fmt);
378 AUD_vlog (cap, fmt, ap);
379 va_end (ap);
380 }
381
382 static void audio_print_options (const char *prefix,
383 struct audio_option *opt)
384 {
385 char *uprefix;
386
387 if (!prefix) {
388 dolog ("No prefix specified\n");
389 return;
390 }
391
392 if (!opt) {
393 dolog ("No options\n");
394 return;
395 }
396
397 uprefix = audio_alloc_prefix (prefix);
398
399 for (; opt->name; opt++) {
400 const char *state = "default";
401 printf (" %s_%s: ", uprefix, opt->name);
402
403 if (opt->overriddenp && *opt->overriddenp) {
404 state = "current";
405 }
406
407 switch (opt->tag) {
408 case AUD_OPT_BOOL:
409 {
410 int *intp = opt->valp;
411 printf ("boolean, %s = %d\n", state, *intp ? 1 : 0);
412 }
413 break;
414
415 case AUD_OPT_INT:
416 {
417 int *intp = opt->valp;
418 printf ("integer, %s = %d\n", state, *intp);
419 }
420 break;
421
422 case AUD_OPT_FMT:
423 {
424 audfmt_e *fmtp = opt->valp;
425 printf (
426 "format, %s = %s, (one of: U8 S8 U16 S16 U32 S32)\n",
427 state,
428 audio_audfmt_to_string (*fmtp)
429 );
430 }
431 break;
432
433 case AUD_OPT_STR:
434 {
435 const char **strp = opt->valp;
436 printf ("string, %s = %s\n",
437 state,
438 *strp ? *strp : "(not set)");
439 }
440 break;
441
442 default:
443 printf ("???\n");
444 dolog ("Bad value tag for option %s_%s %d\n",
445 uprefix, opt->name, opt->tag);
446 break;
447 }
448 printf (" %s\n", opt->descr);
449 }
450
451 g_free (uprefix);
452 }
453
454 static void audio_process_options (const char *prefix,
455 struct audio_option *opt)
456 {
457 char *optname;
458 const char qemu_prefix[] = "QEMU_";
459 size_t preflen, optlen;
460
461 if (audio_bug(__func__, !prefix)) {
462 dolog ("prefix = NULL\n");
463 return;
464 }
465
466 if (audio_bug(__func__, !opt)) {
467 dolog ("opt = NULL\n");
468 return;
469 }
470
471 preflen = strlen (prefix);
472
473 for (; opt->name; opt++) {
474 size_t len, i;
475 int def;
476
477 if (!opt->valp) {
478 dolog ("Option value pointer for `%s' is not set\n",
479 opt->name);
480 continue;
481 }
482
483 len = strlen (opt->name);
484 /* len of opt->name + len of prefix + size of qemu_prefix
485 * (includes trailing zero) + zero + underscore (on behalf of
486 * sizeof) */
487 optlen = len + preflen + sizeof (qemu_prefix) + 1;
488 optname = g_malloc (optlen);
489
490 pstrcpy (optname, optlen, qemu_prefix);
491
492 /* copy while upper-casing, including trailing zero */
493 for (i = 0; i <= preflen; ++i) {
494 optname[i + sizeof (qemu_prefix) - 1] = qemu_toupper(prefix[i]);
495 }
496 pstrcat (optname, optlen, "_");
497 pstrcat (optname, optlen, opt->name);
498
499 def = 1;
500 switch (opt->tag) {
501 case AUD_OPT_BOOL:
502 case AUD_OPT_INT:
503 {
504 int *intp = opt->valp;
505 *intp = audio_get_conf_int (optname, *intp, &def);
506 }
507 break;
508
509 case AUD_OPT_FMT:
510 {
511 audfmt_e *fmtp = opt->valp;
512 *fmtp = audio_get_conf_fmt (optname, *fmtp, &def);
513 }
514 break;
515
516 case AUD_OPT_STR:
517 {
518 const char **strp = opt->valp;
519 *strp = audio_get_conf_str (optname, *strp, &def);
520 }
521 break;
522
523 default:
524 dolog ("Bad value tag for option `%s' - %d\n",
525 optname, opt->tag);
526 break;
527 }
528
529 if (!opt->overriddenp) {
530 opt->overriddenp = &opt->overridden;
531 }
532 *opt->overriddenp = !def;
533 g_free (optname);
534 }
535 }
536
537 static void audio_print_settings (struct audsettings *as)
538 {
539 dolog ("frequency=%d nchannels=%d fmt=", as->freq, as->nchannels);
540
541 switch (as->fmt) {
542 case AUD_FMT_S8:
543 AUD_log (NULL, "S8");
544 break;
545 case AUD_FMT_U8:
546 AUD_log (NULL, "U8");
547 break;
548 case AUD_FMT_S16:
549 AUD_log (NULL, "S16");
550 break;
551 case AUD_FMT_U16:
552 AUD_log (NULL, "U16");
553 break;
554 case AUD_FMT_S32:
555 AUD_log (NULL, "S32");
556 break;
557 case AUD_FMT_U32:
558 AUD_log (NULL, "U32");
559 break;
560 default:
561 AUD_log (NULL, "invalid(%d)", as->fmt);
562 break;
563 }
564
565 AUD_log (NULL, " endianness=");
566 switch (as->endianness) {
567 case 0:
568 AUD_log (NULL, "little");
569 break;
570 case 1:
571 AUD_log (NULL, "big");
572 break;
573 default:
574 AUD_log (NULL, "invalid");
575 break;
576 }
577 AUD_log (NULL, "\n");
578 }
579
580 static int audio_validate_settings (struct audsettings *as)
581 {
582 int invalid;
583
584 invalid = as->nchannels != 1 && as->nchannels != 2;
585 invalid |= as->endianness != 0 && as->endianness != 1;
586
587 switch (as->fmt) {
588 case AUD_FMT_S8:
589 case AUD_FMT_U8:
590 case AUD_FMT_S16:
591 case AUD_FMT_U16:
592 case AUD_FMT_S32:
593 case AUD_FMT_U32:
594 break;
595 default:
596 invalid = 1;
597 break;
598 }
599
600 invalid |= as->freq <= 0;
601 return invalid ? -1 : 0;
602 }
603
604 static int audio_pcm_info_eq (struct audio_pcm_info *info, struct audsettings *as)
605 {
606 int bits = 8, sign = 0;
607
608 switch (as->fmt) {
609 case AUD_FMT_S8:
610 sign = 1;
611 /* fall through */
612 case AUD_FMT_U8:
613 break;
614
615 case AUD_FMT_S16:
616 sign = 1;
617 /* fall through */
618 case AUD_FMT_U16:
619 bits = 16;
620 break;
621
622 case AUD_FMT_S32:
623 sign = 1;
624 /* fall through */
625 case AUD_FMT_U32:
626 bits = 32;
627 break;
628 }
629 return info->freq == as->freq
630 && info->nchannels == as->nchannels
631 && info->sign == sign
632 && info->bits == bits
633 && info->swap_endianness == (as->endianness != AUDIO_HOST_ENDIANNESS);
634 }
635
636 void audio_pcm_init_info (struct audio_pcm_info *info, struct audsettings *as)
637 {
638 int bits = 8, sign = 0, shift = 0;
639
640 switch (as->fmt) {
641 case AUD_FMT_S8:
642 sign = 1;
643 case AUD_FMT_U8:
644 break;
645
646 case AUD_FMT_S16:
647 sign = 1;
648 case AUD_FMT_U16:
649 bits = 16;
650 shift = 1;
651 break;
652
653 case AUD_FMT_S32:
654 sign = 1;
655 case AUD_FMT_U32:
656 bits = 32;
657 shift = 2;
658 break;
659 }
660
661 info->freq = as->freq;
662 info->bits = bits;
663 info->sign = sign;
664 info->nchannels = as->nchannels;
665 info->shift = (as->nchannels == 2) + shift;
666 info->align = (1 << info->shift) - 1;
667 info->bytes_per_second = info->freq << info->shift;
668 info->swap_endianness = (as->endianness != AUDIO_HOST_ENDIANNESS);
669 }
670
671 void audio_pcm_info_clear_buf (struct audio_pcm_info *info, void *buf, int len)
672 {
673 if (!len) {
674 return;
675 }
676
677 if (info->sign) {
678 memset (buf, 0x00, len << info->shift);
679 }
680 else {
681 switch (info->bits) {
682 case 8:
683 memset (buf, 0x80, len << info->shift);
684 break;
685
686 case 16:
687 {
688 int i;
689 uint16_t *p = buf;
690 int shift = info->nchannels - 1;
691 short s = INT16_MAX;
692
693 if (info->swap_endianness) {
694 s = bswap16 (s);
695 }
696
697 for (i = 0; i < len << shift; i++) {
698 p[i] = s;
699 }
700 }
701 break;
702
703 case 32:
704 {
705 int i;
706 uint32_t *p = buf;
707 int shift = info->nchannels - 1;
708 int32_t s = INT32_MAX;
709
710 if (info->swap_endianness) {
711 s = bswap32 (s);
712 }
713
714 for (i = 0; i < len << shift; i++) {
715 p[i] = s;
716 }
717 }
718 break;
719
720 default:
721 AUD_log (NULL, "audio_pcm_info_clear_buf: invalid bits %d\n",
722 info->bits);
723 break;
724 }
725 }
726 }
727
728 /*
729 * Capture
730 */
731 static void noop_conv (struct st_sample *dst, const void *src, int samples)
732 {
733 (void) src;
734 (void) dst;
735 (void) samples;
736 }
737
738 static CaptureVoiceOut *audio_pcm_capture_find_specific (
739 struct audsettings *as
740 )
741 {
742 CaptureVoiceOut *cap;
743 AudioState *s = &glob_audio_state;
744
745 for (cap = s->cap_head.lh_first; cap; cap = cap->entries.le_next) {
746 if (audio_pcm_info_eq (&cap->hw.info, as)) {
747 return cap;
748 }
749 }
750 return NULL;
751 }
752
753 static void audio_notify_capture (CaptureVoiceOut *cap, audcnotification_e cmd)
754 {
755 struct capture_callback *cb;
756
757 #ifdef DEBUG_CAPTURE
758 dolog ("notification %d sent\n", cmd);
759 #endif
760 for (cb = cap->cb_head.lh_first; cb; cb = cb->entries.le_next) {
761 cb->ops.notify (cb->opaque, cmd);
762 }
763 }
764
765 static void audio_capture_maybe_changed (CaptureVoiceOut *cap, int enabled)
766 {
767 if (cap->hw.enabled != enabled) {
768 audcnotification_e cmd;
769 cap->hw.enabled = enabled;
770 cmd = enabled ? AUD_CNOTIFY_ENABLE : AUD_CNOTIFY_DISABLE;
771 audio_notify_capture (cap, cmd);
772 }
773 }
774
775 static void audio_recalc_and_notify_capture (CaptureVoiceOut *cap)
776 {
777 HWVoiceOut *hw = &cap->hw;
778 SWVoiceOut *sw;
779 int enabled = 0;
780
781 for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) {
782 if (sw->active) {
783 enabled = 1;
784 break;
785 }
786 }
787 audio_capture_maybe_changed (cap, enabled);
788 }
789
790 static void audio_detach_capture (HWVoiceOut *hw)
791 {
792 SWVoiceCap *sc = hw->cap_head.lh_first;
793
794 while (sc) {
795 SWVoiceCap *sc1 = sc->entries.le_next;
796 SWVoiceOut *sw = &sc->sw;
797 CaptureVoiceOut *cap = sc->cap;
798 int was_active = sw->active;
799
800 if (sw->rate) {
801 st_rate_stop (sw->rate);
802 sw->rate = NULL;
803 }
804
805 QLIST_REMOVE (sw, entries);
806 QLIST_REMOVE (sc, entries);
807 g_free (sc);
808 if (was_active) {
809 /* We have removed soft voice from the capture:
810 this might have changed the overall status of the capture
811 since this might have been the only active voice */
812 audio_recalc_and_notify_capture (cap);
813 }
814 sc = sc1;
815 }
816 }
817
818 static int audio_attach_capture (HWVoiceOut *hw)
819 {
820 AudioState *s = &glob_audio_state;
821 CaptureVoiceOut *cap;
822
823 audio_detach_capture (hw);
824 for (cap = s->cap_head.lh_first; cap; cap = cap->entries.le_next) {
825 SWVoiceCap *sc;
826 SWVoiceOut *sw;
827 HWVoiceOut *hw_cap = &cap->hw;
828
829 sc = audio_calloc(__func__, 1, sizeof(*sc));
830 if (!sc) {
831 dolog ("Could not allocate soft capture voice (%zu bytes)\n",
832 sizeof (*sc));
833 return -1;
834 }
835
836 sc->cap = cap;
837 sw = &sc->sw;
838 sw->hw = hw_cap;
839 sw->info = hw->info;
840 sw->empty = 1;
841 sw->active = hw->enabled;
842 sw->conv = noop_conv;
843 sw->ratio = ((int64_t) hw_cap->info.freq << 32) / sw->info.freq;
844 sw->vol = nominal_volume;
845 sw->rate = st_rate_start (sw->info.freq, hw_cap->info.freq);
846 if (!sw->rate) {
847 dolog ("Could not start rate conversion for `%s'\n", SW_NAME (sw));
848 g_free (sw);
849 return -1;
850 }
851 QLIST_INSERT_HEAD (&hw_cap->sw_head, sw, entries);
852 QLIST_INSERT_HEAD (&hw->cap_head, sc, entries);
853 #ifdef DEBUG_CAPTURE
854 sw->name = g_strdup_printf ("for %p %d,%d,%d",
855 hw, sw->info.freq, sw->info.bits,
856 sw->info.nchannels);
857 dolog ("Added %s active = %d\n", sw->name, sw->active);
858 #endif
859 if (sw->active) {
860 audio_capture_maybe_changed (cap, 1);
861 }
862 }
863 return 0;
864 }
865
866 /*
867 * Hard voice (capture)
868 */
869 static int audio_pcm_hw_find_min_in (HWVoiceIn *hw)
870 {
871 SWVoiceIn *sw;
872 int m = hw->total_samples_captured;
873
874 for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) {
875 if (sw->active) {
876 m = audio_MIN (m, sw->total_hw_samples_acquired);
877 }
878 }
879 return m;
880 }
881
882 int audio_pcm_hw_get_live_in (HWVoiceIn *hw)
883 {
884 int live = hw->total_samples_captured - audio_pcm_hw_find_min_in (hw);
885 if (audio_bug(__func__, live < 0 || live > hw->samples)) {
886 dolog ("live=%d hw->samples=%d\n", live, hw->samples);
887 return 0;
888 }
889 return live;
890 }
891
892 int audio_pcm_hw_clip_out (HWVoiceOut *hw, void *pcm_buf,
893 int live, int pending)
894 {
895 int left = hw->samples - pending;
896 int len = audio_MIN (left, live);
897 int clipped = 0;
898
899 while (len) {
900 struct st_sample *src = hw->mix_buf + hw->rpos;
901 uint8_t *dst = advance (pcm_buf, hw->rpos << hw->info.shift);
902 int samples_till_end_of_buf = hw->samples - hw->rpos;
903 int samples_to_clip = audio_MIN (len, samples_till_end_of_buf);
904
905 hw->clip (dst, src, samples_to_clip);
906
907 hw->rpos = (hw->rpos + samples_to_clip) % hw->samples;
908 len -= samples_to_clip;
909 clipped += samples_to_clip;
910 }
911 return clipped;
912 }
913
914 /*
915 * Soft voice (capture)
916 */
917 static int audio_pcm_sw_get_rpos_in (SWVoiceIn *sw)
918 {
919 HWVoiceIn *hw = sw->hw;
920 int live = hw->total_samples_captured - sw->total_hw_samples_acquired;
921 int rpos;
922
923 if (audio_bug(__func__, live < 0 || live > hw->samples)) {
924 dolog ("live=%d hw->samples=%d\n", live, hw->samples);
925 return 0;
926 }
927
928 rpos = hw->wpos - live;
929 if (rpos >= 0) {
930 return rpos;
931 }
932 else {
933 return hw->samples + rpos;
934 }
935 }
936
937 int audio_pcm_sw_read (SWVoiceIn *sw, void *buf, int size)
938 {
939 HWVoiceIn *hw = sw->hw;
940 int samples, live, ret = 0, swlim, isamp, osamp, rpos, total = 0;
941 struct st_sample *src, *dst = sw->buf;
942
943 rpos = audio_pcm_sw_get_rpos_in (sw) % hw->samples;
944
945 live = hw->total_samples_captured - sw->total_hw_samples_acquired;
946 if (audio_bug(__func__, live < 0 || live > hw->samples)) {
947 dolog ("live_in=%d hw->samples=%d\n", live, hw->samples);
948 return 0;
949 }
950
951 samples = size >> sw->info.shift;
952 if (!live) {
953 return 0;
954 }
955
956 swlim = (live * sw->ratio) >> 32;
957 swlim = audio_MIN (swlim, samples);
958
959 while (swlim) {
960 src = hw->conv_buf + rpos;
961 isamp = hw->wpos - rpos;
962 /* XXX: <= ? */
963 if (isamp <= 0) {
964 isamp = hw->samples - rpos;
965 }
966
967 if (!isamp) {
968 break;
969 }
970 osamp = swlim;
971
972 if (audio_bug(__func__, osamp < 0)) {
973 dolog ("osamp=%d\n", osamp);
974 return 0;
975 }
976
977 st_rate_flow (sw->rate, src, dst, &isamp, &osamp);
978 swlim -= osamp;
979 rpos = (rpos + isamp) % hw->samples;
980 dst += osamp;
981 ret += osamp;
982 total += isamp;
983 }
984
985 if (!(hw->ctl_caps & VOICE_VOLUME_CAP)) {
986 mixeng_volume (sw->buf, ret, &sw->vol);
987 }
988
989 sw->clip (buf, sw->buf, ret);
990 sw->total_hw_samples_acquired += total;
991 return ret << sw->info.shift;
992 }
993
994 /*
995 * Hard voice (playback)
996 */
997 static int audio_pcm_hw_find_min_out (HWVoiceOut *hw, int *nb_livep)
998 {
999 SWVoiceOut *sw;
1000 int m = INT_MAX;
1001 int nb_live = 0;
1002
1003 for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) {
1004 if (sw->active || !sw->empty) {
1005 m = audio_MIN (m, sw->total_hw_samples_mixed);
1006 nb_live += 1;
1007 }
1008 }
1009
1010 *nb_livep = nb_live;
1011 return m;
1012 }
1013
1014 static int audio_pcm_hw_get_live_out (HWVoiceOut *hw, int *nb_live)
1015 {
1016 int smin;
1017 int nb_live1;
1018
1019 smin = audio_pcm_hw_find_min_out (hw, &nb_live1);
1020 if (nb_live) {
1021 *nb_live = nb_live1;
1022 }
1023
1024 if (nb_live1) {
1025 int live = smin;
1026
1027 if (audio_bug(__func__, live < 0 || live > hw->samples)) {
1028 dolog ("live=%d hw->samples=%d\n", live, hw->samples);
1029 return 0;
1030 }
1031 return live;
1032 }
1033 return 0;
1034 }
1035
1036 /*
1037 * Soft voice (playback)
1038 */
1039 int audio_pcm_sw_write (SWVoiceOut *sw, void *buf, int size)
1040 {
1041 int hwsamples, samples, isamp, osamp, wpos, live, dead, left, swlim, blck;
1042 int ret = 0, pos = 0, total = 0;
1043
1044 if (!sw) {
1045 return size;
1046 }
1047
1048 hwsamples = sw->hw->samples;
1049
1050 live = sw->total_hw_samples_mixed;
1051 if (audio_bug(__func__, live < 0 || live > hwsamples)) {
1052 dolog ("live=%d hw->samples=%d\n", live, hwsamples);
1053 return 0;
1054 }
1055
1056 if (live == hwsamples) {
1057 #ifdef DEBUG_OUT
1058 dolog ("%s is full %d\n", sw->name, live);
1059 #endif
1060 return 0;
1061 }
1062
1063 wpos = (sw->hw->rpos + live) % hwsamples;
1064 samples = size >> sw->info.shift;
1065
1066 dead = hwsamples - live;
1067 swlim = ((int64_t) dead << 32) / sw->ratio;
1068 swlim = audio_MIN (swlim, samples);
1069 if (swlim) {
1070 sw->conv (sw->buf, buf, swlim);
1071
1072 if (!(sw->hw->ctl_caps & VOICE_VOLUME_CAP)) {
1073 mixeng_volume (sw->buf, swlim, &sw->vol);
1074 }
1075 }
1076
1077 while (swlim) {
1078 dead = hwsamples - live;
1079 left = hwsamples - wpos;
1080 blck = audio_MIN (dead, left);
1081 if (!blck) {
1082 break;
1083 }
1084 isamp = swlim;
1085 osamp = blck;
1086 st_rate_flow_mix (
1087 sw->rate,
1088 sw->buf + pos,
1089 sw->hw->mix_buf + wpos,
1090 &isamp,
1091 &osamp
1092 );
1093 ret += isamp;
1094 swlim -= isamp;
1095 pos += isamp;
1096 live += osamp;
1097 wpos = (wpos + osamp) % hwsamples;
1098 total += osamp;
1099 }
1100
1101 sw->total_hw_samples_mixed += total;
1102 sw->empty = sw->total_hw_samples_mixed == 0;
1103
1104 #ifdef DEBUG_OUT
1105 dolog (
1106 "%s: write size %d ret %d total sw %d\n",
1107 SW_NAME (sw),
1108 size >> sw->info.shift,
1109 ret,
1110 sw->total_hw_samples_mixed
1111 );
1112 #endif
1113
1114 return ret << sw->info.shift;
1115 }
1116
1117 #ifdef DEBUG_AUDIO
1118 static void audio_pcm_print_info (const char *cap, struct audio_pcm_info *info)
1119 {
1120 dolog ("%s: bits %d, sign %d, freq %d, nchan %d\n",
1121 cap, info->bits, info->sign, info->freq, info->nchannels);
1122 }
1123 #endif
1124
1125 #define DAC
1126 #include "audio_template.h"
1127 #undef DAC
1128 #include "audio_template.h"
1129
1130 /*
1131 * Timer
1132 */
1133 static int audio_is_timer_needed (void)
1134 {
1135 HWVoiceIn *hwi = NULL;
1136 HWVoiceOut *hwo = NULL;
1137
1138 while ((hwo = audio_pcm_hw_find_any_enabled_out (hwo))) {
1139 if (!hwo->poll_mode) return 1;
1140 }
1141 while ((hwi = audio_pcm_hw_find_any_enabled_in (hwi))) {
1142 if (!hwi->poll_mode) return 1;
1143 }
1144 return 0;
1145 }
1146
1147 static void audio_reset_timer (AudioState *s)
1148 {
1149 if (audio_is_timer_needed ()) {
1150 timer_mod_anticipate_ns(s->ts,
1151 qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) + conf.period.ticks);
1152 }
1153 else {
1154 timer_del (s->ts);
1155 }
1156 }
1157
1158 static void audio_timer (void *opaque)
1159 {
1160 audio_run ("timer");
1161 audio_reset_timer (opaque);
1162 }
1163
1164 /*
1165 * Public API
1166 */
1167 int AUD_write (SWVoiceOut *sw, void *buf, int size)
1168 {
1169 if (!sw) {
1170 /* XXX: Consider options */
1171 return size;
1172 }
1173
1174 if (!sw->hw->enabled) {
1175 dolog ("Writing to disabled voice %s\n", SW_NAME (sw));
1176 return 0;
1177 }
1178
1179 return sw->hw->pcm_ops->write(sw, buf, size);
1180 }
1181
1182 int AUD_read (SWVoiceIn *sw, void *buf, int size)
1183 {
1184 if (!sw) {
1185 /* XXX: Consider options */
1186 return size;
1187 }
1188
1189 if (!sw->hw->enabled) {
1190 dolog ("Reading from disabled voice %s\n", SW_NAME (sw));
1191 return 0;
1192 }
1193
1194 return sw->hw->pcm_ops->read(sw, buf, size);
1195 }
1196
1197 int AUD_get_buffer_size_out (SWVoiceOut *sw)
1198 {
1199 return sw->hw->samples << sw->hw->info.shift;
1200 }
1201
1202 void AUD_set_active_out (SWVoiceOut *sw, int on)
1203 {
1204 HWVoiceOut *hw;
1205
1206 if (!sw) {
1207 return;
1208 }
1209
1210 hw = sw->hw;
1211 if (sw->active != on) {
1212 AudioState *s = &glob_audio_state;
1213 SWVoiceOut *temp_sw;
1214 SWVoiceCap *sc;
1215
1216 if (on) {
1217 hw->pending_disable = 0;
1218 if (!hw->enabled) {
1219 hw->enabled = 1;
1220 if (s->vm_running) {
1221 hw->pcm_ops->ctl_out (hw, VOICE_ENABLE, conf.try_poll_out);
1222 audio_reset_timer (s);
1223 }
1224 }
1225 }
1226 else {
1227 if (hw->enabled) {
1228 int nb_active = 0;
1229
1230 for (temp_sw = hw->sw_head.lh_first; temp_sw;
1231 temp_sw = temp_sw->entries.le_next) {
1232 nb_active += temp_sw->active != 0;
1233 }
1234
1235 hw->pending_disable = nb_active == 1;
1236 }
1237 }
1238
1239 for (sc = hw->cap_head.lh_first; sc; sc = sc->entries.le_next) {
1240 sc->sw.active = hw->enabled;
1241 if (hw->enabled) {
1242 audio_capture_maybe_changed (sc->cap, 1);
1243 }
1244 }
1245 sw->active = on;
1246 }
1247 }
1248
1249 void AUD_set_active_in (SWVoiceIn *sw, int on)
1250 {
1251 HWVoiceIn *hw;
1252
1253 if (!sw) {
1254 return;
1255 }
1256
1257 hw = sw->hw;
1258 if (sw->active != on) {
1259 AudioState *s = &glob_audio_state;
1260 SWVoiceIn *temp_sw;
1261
1262 if (on) {
1263 if (!hw->enabled) {
1264 hw->enabled = 1;
1265 if (s->vm_running) {
1266 hw->pcm_ops->ctl_in (hw, VOICE_ENABLE, conf.try_poll_in);
1267 audio_reset_timer (s);
1268 }
1269 }
1270 sw->total_hw_samples_acquired = hw->total_samples_captured;
1271 }
1272 else {
1273 if (hw->enabled) {
1274 int nb_active = 0;
1275
1276 for (temp_sw = hw->sw_head.lh_first; temp_sw;
1277 temp_sw = temp_sw->entries.le_next) {
1278 nb_active += temp_sw->active != 0;
1279 }
1280
1281 if (nb_active == 1) {
1282 hw->enabled = 0;
1283 hw->pcm_ops->ctl_in (hw, VOICE_DISABLE);
1284 }
1285 }
1286 }
1287 sw->active = on;
1288 }
1289 }
1290
1291 static int audio_get_avail (SWVoiceIn *sw)
1292 {
1293 int live;
1294
1295 if (!sw) {
1296 return 0;
1297 }
1298
1299 live = sw->hw->total_samples_captured - sw->total_hw_samples_acquired;
1300 if (audio_bug(__func__, live < 0 || live > sw->hw->samples)) {
1301 dolog ("live=%d sw->hw->samples=%d\n", live, sw->hw->samples);
1302 return 0;
1303 }
1304
1305 ldebug (
1306 "%s: get_avail live %d ret %" PRId64 "\n",
1307 SW_NAME (sw),
1308 live, (((int64_t) live << 32) / sw->ratio) << sw->info.shift
1309 );
1310
1311 return (((int64_t) live << 32) / sw->ratio) << sw->info.shift;
1312 }
1313
1314 static int audio_get_free (SWVoiceOut *sw)
1315 {
1316 int live, dead;
1317
1318 if (!sw) {
1319 return 0;
1320 }
1321
1322 live = sw->total_hw_samples_mixed;
1323
1324 if (audio_bug(__func__, live < 0 || live > sw->hw->samples)) {
1325 dolog ("live=%d sw->hw->samples=%d\n", live, sw->hw->samples);
1326 return 0;
1327 }
1328
1329 dead = sw->hw->samples - live;
1330
1331 #ifdef DEBUG_OUT
1332 dolog ("%s: get_free live %d dead %d ret %" PRId64 "\n",
1333 SW_NAME (sw),
1334 live, dead, (((int64_t) dead << 32) / sw->ratio) << sw->info.shift);
1335 #endif
1336
1337 return (((int64_t) dead << 32) / sw->ratio) << sw->info.shift;
1338 }
1339
1340 static void audio_capture_mix_and_clear (HWVoiceOut *hw, int rpos, int samples)
1341 {
1342 int n;
1343
1344 if (hw->enabled) {
1345 SWVoiceCap *sc;
1346
1347 for (sc = hw->cap_head.lh_first; sc; sc = sc->entries.le_next) {
1348 SWVoiceOut *sw = &sc->sw;
1349 int rpos2 = rpos;
1350
1351 n = samples;
1352 while (n) {
1353 int till_end_of_hw = hw->samples - rpos2;
1354 int to_write = audio_MIN (till_end_of_hw, n);
1355 int bytes = to_write << hw->info.shift;
1356 int written;
1357
1358 sw->buf = hw->mix_buf + rpos2;
1359 written = audio_pcm_sw_write (sw, NULL, bytes);
1360 if (written - bytes) {
1361 dolog ("Could not mix %d bytes into a capture "
1362 "buffer, mixed %d\n",
1363 bytes, written);
1364 break;
1365 }
1366 n -= to_write;
1367 rpos2 = (rpos2 + to_write) % hw->samples;
1368 }
1369 }
1370 }
1371
1372 n = audio_MIN (samples, hw->samples - rpos);
1373 mixeng_clear (hw->mix_buf + rpos, n);
1374 mixeng_clear (hw->mix_buf, samples - n);
1375 }
1376
1377 static void audio_run_out (AudioState *s)
1378 {
1379 HWVoiceOut *hw = NULL;
1380 SWVoiceOut *sw;
1381
1382 while ((hw = audio_pcm_hw_find_any_enabled_out (hw))) {
1383 int played;
1384 int live, free, nb_live, cleanup_required, prev_rpos;
1385
1386 live = audio_pcm_hw_get_live_out (hw, &nb_live);
1387 if (!nb_live) {
1388 live = 0;
1389 }
1390
1391 if (audio_bug(__func__, live < 0 || live > hw->samples)) {
1392 dolog ("live=%d hw->samples=%d\n", live, hw->samples);
1393 continue;
1394 }
1395
1396 if (hw->pending_disable && !nb_live) {
1397 SWVoiceCap *sc;
1398 #ifdef DEBUG_OUT
1399 dolog ("Disabling voice\n");
1400 #endif
1401 hw->enabled = 0;
1402 hw->pending_disable = 0;
1403 hw->pcm_ops->ctl_out (hw, VOICE_DISABLE);
1404 for (sc = hw->cap_head.lh_first; sc; sc = sc->entries.le_next) {
1405 sc->sw.active = 0;
1406 audio_recalc_and_notify_capture (sc->cap);
1407 }
1408 continue;
1409 }
1410
1411 if (!live) {
1412 for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) {
1413 if (sw->active) {
1414 free = audio_get_free (sw);
1415 if (free > 0) {
1416 sw->callback.fn (sw->callback.opaque, free);
1417 }
1418 }
1419 }
1420 continue;
1421 }
1422
1423 prev_rpos = hw->rpos;
1424 played = hw->pcm_ops->run_out (hw, live);
1425 replay_audio_out(&played);
1426 if (audio_bug(__func__, hw->rpos >= hw->samples)) {
1427 dolog ("hw->rpos=%d hw->samples=%d played=%d\n",
1428 hw->rpos, hw->samples, played);
1429 hw->rpos = 0;
1430 }
1431
1432 #ifdef DEBUG_OUT
1433 dolog ("played=%d\n", played);
1434 #endif
1435
1436 if (played) {
1437 hw->ts_helper += played;
1438 audio_capture_mix_and_clear (hw, prev_rpos, played);
1439 }
1440
1441 cleanup_required = 0;
1442 for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) {
1443 if (!sw->active && sw->empty) {
1444 continue;
1445 }
1446
1447 if (audio_bug(__func__, played > sw->total_hw_samples_mixed)) {
1448 dolog ("played=%d sw->total_hw_samples_mixed=%d\n",
1449 played, sw->total_hw_samples_mixed);
1450 played = sw->total_hw_samples_mixed;
1451 }
1452
1453 sw->total_hw_samples_mixed -= played;
1454
1455 if (!sw->total_hw_samples_mixed) {
1456 sw->empty = 1;
1457 cleanup_required |= !sw->active && !sw->callback.fn;
1458 }
1459
1460 if (sw->active) {
1461 free = audio_get_free (sw);
1462 if (free > 0) {
1463 sw->callback.fn (sw->callback.opaque, free);
1464 }
1465 }
1466 }
1467
1468 if (cleanup_required) {
1469 SWVoiceOut *sw1;
1470
1471 sw = hw->sw_head.lh_first;
1472 while (sw) {
1473 sw1 = sw->entries.le_next;
1474 if (!sw->active && !sw->callback.fn) {
1475 audio_close_out (sw);
1476 }
1477 sw = sw1;
1478 }
1479 }
1480 }
1481 }
1482
1483 static void audio_run_in (AudioState *s)
1484 {
1485 HWVoiceIn *hw = NULL;
1486
1487 while ((hw = audio_pcm_hw_find_any_enabled_in (hw))) {
1488 SWVoiceIn *sw;
1489 int captured = 0, min;
1490
1491 if (replay_mode != REPLAY_MODE_PLAY) {
1492 captured = hw->pcm_ops->run_in(hw);
1493 }
1494 replay_audio_in(&captured, hw->conv_buf, &hw->wpos, hw->samples);
1495
1496 min = audio_pcm_hw_find_min_in (hw);
1497 hw->total_samples_captured += captured - min;
1498 hw->ts_helper += captured;
1499
1500 for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) {
1501 sw->total_hw_samples_acquired -= min;
1502
1503 if (sw->active) {
1504 int avail;
1505
1506 avail = audio_get_avail (sw);
1507 if (avail > 0) {
1508 sw->callback.fn (sw->callback.opaque, avail);
1509 }
1510 }
1511 }
1512 }
1513 }
1514
1515 static void audio_run_capture (AudioState *s)
1516 {
1517 CaptureVoiceOut *cap;
1518
1519 for (cap = s->cap_head.lh_first; cap; cap = cap->entries.le_next) {
1520 int live, rpos, captured;
1521 HWVoiceOut *hw = &cap->hw;
1522 SWVoiceOut *sw;
1523
1524 captured = live = audio_pcm_hw_get_live_out (hw, NULL);
1525 rpos = hw->rpos;
1526 while (live) {
1527 int left = hw->samples - rpos;
1528 int to_capture = audio_MIN (live, left);
1529 struct st_sample *src;
1530 struct capture_callback *cb;
1531
1532 src = hw->mix_buf + rpos;
1533 hw->clip (cap->buf, src, to_capture);
1534 mixeng_clear (src, to_capture);
1535
1536 for (cb = cap->cb_head.lh_first; cb; cb = cb->entries.le_next) {
1537 cb->ops.capture (cb->opaque, cap->buf,
1538 to_capture << hw->info.shift);
1539 }
1540 rpos = (rpos + to_capture) % hw->samples;
1541 live -= to_capture;
1542 }
1543 hw->rpos = rpos;
1544
1545 for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) {
1546 if (!sw->active && sw->empty) {
1547 continue;
1548 }
1549
1550 if (audio_bug(__func__, captured > sw->total_hw_samples_mixed)) {
1551 dolog ("captured=%d sw->total_hw_samples_mixed=%d\n",
1552 captured, sw->total_hw_samples_mixed);
1553 captured = sw->total_hw_samples_mixed;
1554 }
1555
1556 sw->total_hw_samples_mixed -= captured;
1557 sw->empty = sw->total_hw_samples_mixed == 0;
1558 }
1559 }
1560 }
1561
1562 void audio_run (const char *msg)
1563 {
1564 AudioState *s = &glob_audio_state;
1565
1566 audio_run_out (s);
1567 audio_run_in (s);
1568 audio_run_capture (s);
1569 #ifdef DEBUG_POLL
1570 {
1571 static double prevtime;
1572 double currtime;
1573 struct timeval tv;
1574
1575 if (gettimeofday (&tv, NULL)) {
1576 perror ("audio_run: gettimeofday");
1577 return;
1578 }
1579
1580 currtime = tv.tv_sec + tv.tv_usec * 1e-6;
1581 dolog ("Elapsed since last %s: %f\n", msg, currtime - prevtime);
1582 prevtime = currtime;
1583 }
1584 #endif
1585 }
1586
1587 static struct audio_option audio_options[] = {
1588 /* DAC */
1589 {
1590 .name = "DAC_FIXED_SETTINGS",
1591 .tag = AUD_OPT_BOOL,
1592 .valp = &conf.fixed_out.enabled,
1593 .descr = "Use fixed settings for host DAC"
1594 },
1595 {
1596 .name = "DAC_FIXED_FREQ",
1597 .tag = AUD_OPT_INT,
1598 .valp = &conf.fixed_out.settings.freq,
1599 .descr = "Frequency for fixed host DAC"
1600 },
1601 {
1602 .name = "DAC_FIXED_FMT",
1603 .tag = AUD_OPT_FMT,
1604 .valp = &conf.fixed_out.settings.fmt,
1605 .descr = "Format for fixed host DAC"
1606 },
1607 {
1608 .name = "DAC_FIXED_CHANNELS",
1609 .tag = AUD_OPT_INT,
1610 .valp = &conf.fixed_out.settings.nchannels,
1611 .descr = "Number of channels for fixed DAC (1 - mono, 2 - stereo)"
1612 },
1613 {
1614 .name = "DAC_VOICES",
1615 .tag = AUD_OPT_INT,
1616 .valp = &conf.fixed_out.nb_voices,
1617 .descr = "Number of voices for DAC"
1618 },
1619 {
1620 .name = "DAC_TRY_POLL",
1621 .tag = AUD_OPT_BOOL,
1622 .valp = &conf.try_poll_out,
1623 .descr = "Attempt using poll mode for DAC"
1624 },
1625 /* ADC */
1626 {
1627 .name = "ADC_FIXED_SETTINGS",
1628 .tag = AUD_OPT_BOOL,
1629 .valp = &conf.fixed_in.enabled,
1630 .descr = "Use fixed settings for host ADC"
1631 },
1632 {
1633 .name = "ADC_FIXED_FREQ",
1634 .tag = AUD_OPT_INT,
1635 .valp = &conf.fixed_in.settings.freq,
1636 .descr = "Frequency for fixed host ADC"
1637 },
1638 {
1639 .name = "ADC_FIXED_FMT",
1640 .tag = AUD_OPT_FMT,
1641 .valp = &conf.fixed_in.settings.fmt,
1642 .descr = "Format for fixed host ADC"
1643 },
1644 {
1645 .name = "ADC_FIXED_CHANNELS",
1646 .tag = AUD_OPT_INT,
1647 .valp = &conf.fixed_in.settings.nchannels,
1648 .descr = "Number of channels for fixed ADC (1 - mono, 2 - stereo)"
1649 },
1650 {
1651 .name = "ADC_VOICES",
1652 .tag = AUD_OPT_INT,
1653 .valp = &conf.fixed_in.nb_voices,
1654 .descr = "Number of voices for ADC"
1655 },
1656 {
1657 .name = "ADC_TRY_POLL",
1658 .tag = AUD_OPT_BOOL,
1659 .valp = &conf.try_poll_in,
1660 .descr = "Attempt using poll mode for ADC"
1661 },
1662 /* Misc */
1663 {
1664 .name = "TIMER_PERIOD",
1665 .tag = AUD_OPT_INT,
1666 .valp = &conf.period.hertz,
1667 .descr = "Timer period in HZ (0 - use lowest possible)"
1668 },
1669 { /* End of list */ }
1670 };
1671
1672 static void audio_pp_nb_voices (const char *typ, int nb)
1673 {
1674 switch (nb) {
1675 case 0:
1676 printf ("Does not support %s\n", typ);
1677 break;
1678 case 1:
1679 printf ("One %s voice\n", typ);
1680 break;
1681 case INT_MAX:
1682 printf ("Theoretically supports many %s voices\n", typ);
1683 break;
1684 default:
1685 printf ("Theoretically supports up to %d %s voices\n", nb, typ);
1686 break;
1687 }
1688
1689 }
1690
1691 void AUD_help (void)
1692 {
1693 struct audio_driver *d;
1694
1695 /* make sure we print the help text for modular drivers too */
1696 audio_module_load_all();
1697
1698 audio_process_options ("AUDIO", audio_options);
1699 QLIST_FOREACH(d, &audio_drivers, next) {
1700 if (d->options) {
1701 audio_process_options (d->name, d->options);
1702 }
1703 }
1704
1705 printf ("Audio options:\n");
1706 audio_print_options ("AUDIO", audio_options);
1707 printf ("\n");
1708
1709 printf ("Available drivers:\n");
1710
1711 QLIST_FOREACH(d, &audio_drivers, next) {
1712
1713 printf ("Name: %s\n", d->name);
1714 printf ("Description: %s\n", d->descr);
1715
1716 audio_pp_nb_voices ("playback", d->max_voices_out);
1717 audio_pp_nb_voices ("capture", d->max_voices_in);
1718
1719 if (d->options) {
1720 printf ("Options:\n");
1721 audio_print_options (d->name, d->options);
1722 }
1723 else {
1724 printf ("No options\n");
1725 }
1726 printf ("\n");
1727 }
1728
1729 printf (
1730 "Options are settable through environment variables.\n"
1731 "Example:\n"
1732 #ifdef _WIN32
1733 " set QEMU_AUDIO_DRV=wav\n"
1734 " set QEMU_WAV_PATH=c:\\tune.wav\n"
1735 #else
1736 " export QEMU_AUDIO_DRV=wav\n"
1737 " export QEMU_WAV_PATH=$HOME/tune.wav\n"
1738 "(for csh replace export with setenv in the above)\n"
1739 #endif
1740 " qemu ...\n\n"
1741 );
1742 }
1743
1744 static int audio_driver_init (AudioState *s, struct audio_driver *drv)
1745 {
1746 if (drv->options) {
1747 audio_process_options (drv->name, drv->options);
1748 }
1749 s->drv_opaque = drv->init ();
1750
1751 if (s->drv_opaque) {
1752 audio_init_nb_voices_out (drv);
1753 audio_init_nb_voices_in (drv);
1754 s->drv = drv;
1755 return 0;
1756 }
1757 else {
1758 dolog ("Could not init `%s' audio driver\n", drv->name);
1759 return -1;
1760 }
1761 }
1762
1763 static void audio_vm_change_state_handler (void *opaque, int running,
1764 RunState state)
1765 {
1766 AudioState *s = opaque;
1767 HWVoiceOut *hwo = NULL;
1768 HWVoiceIn *hwi = NULL;
1769 int op = running ? VOICE_ENABLE : VOICE_DISABLE;
1770
1771 s->vm_running = running;
1772 while ((hwo = audio_pcm_hw_find_any_enabled_out (hwo))) {
1773 hwo->pcm_ops->ctl_out (hwo, op, conf.try_poll_out);
1774 }
1775
1776 while ((hwi = audio_pcm_hw_find_any_enabled_in (hwi))) {
1777 hwi->pcm_ops->ctl_in (hwi, op, conf.try_poll_in);
1778 }
1779 audio_reset_timer (s);
1780 }
1781
1782 static bool is_cleaning_up;
1783
1784 bool audio_is_cleaning_up(void)
1785 {
1786 return is_cleaning_up;
1787 }
1788
1789 void audio_cleanup(void)
1790 {
1791 AudioState *s = &glob_audio_state;
1792 HWVoiceOut *hwo, *hwon;
1793 HWVoiceIn *hwi, *hwin;
1794
1795 is_cleaning_up = true;
1796 QLIST_FOREACH_SAFE(hwo, &glob_audio_state.hw_head_out, entries, hwon) {
1797 SWVoiceCap *sc;
1798
1799 if (hwo->enabled) {
1800 hwo->pcm_ops->ctl_out (hwo, VOICE_DISABLE);
1801 }
1802 hwo->pcm_ops->fini_out (hwo);
1803
1804 for (sc = hwo->cap_head.lh_first; sc; sc = sc->entries.le_next) {
1805 CaptureVoiceOut *cap = sc->cap;
1806 struct capture_callback *cb;
1807
1808 for (cb = cap->cb_head.lh_first; cb; cb = cb->entries.le_next) {
1809 cb->ops.destroy (cb->opaque);
1810 }
1811 }
1812 QLIST_REMOVE(hwo, entries);
1813 }
1814
1815 QLIST_FOREACH_SAFE(hwi, &glob_audio_state.hw_head_in, entries, hwin) {
1816 if (hwi->enabled) {
1817 hwi->pcm_ops->ctl_in (hwi, VOICE_DISABLE);
1818 }
1819 hwi->pcm_ops->fini_in (hwi);
1820 QLIST_REMOVE(hwi, entries);
1821 }
1822
1823 if (s->drv) {
1824 s->drv->fini (s->drv_opaque);
1825 s->drv = NULL;
1826 }
1827 }
1828
1829 static const VMStateDescription vmstate_audio = {
1830 .name = "audio",
1831 .version_id = 1,
1832 .minimum_version_id = 1,
1833 .fields = (VMStateField[]) {
1834 VMSTATE_END_OF_LIST()
1835 }
1836 };
1837
1838 static void audio_init (void)
1839 {
1840 size_t i;
1841 int done = 0;
1842 const char *drvname;
1843 VMChangeStateEntry *e;
1844 AudioState *s = &glob_audio_state;
1845 struct audio_driver *driver;
1846
1847 if (s->drv) {
1848 return;
1849 }
1850
1851 QLIST_INIT (&s->hw_head_out);
1852 QLIST_INIT (&s->hw_head_in);
1853 QLIST_INIT (&s->cap_head);
1854 atexit(audio_cleanup);
1855
1856 s->ts = timer_new_ns(QEMU_CLOCK_VIRTUAL, audio_timer, s);
1857
1858 audio_process_options ("AUDIO", audio_options);
1859
1860 s->nb_hw_voices_out = conf.fixed_out.nb_voices;
1861 s->nb_hw_voices_in = conf.fixed_in.nb_voices;
1862
1863 if (s->nb_hw_voices_out <= 0) {
1864 dolog ("Bogus number of playback voices %d, setting to 1\n",
1865 s->nb_hw_voices_out);
1866 s->nb_hw_voices_out = 1;
1867 }
1868
1869 if (s->nb_hw_voices_in <= 0) {
1870 dolog ("Bogus number of capture voices %d, setting to 0\n",
1871 s->nb_hw_voices_in);
1872 s->nb_hw_voices_in = 0;
1873 }
1874
1875 {
1876 int def;
1877 drvname = audio_get_conf_str ("QEMU_AUDIO_DRV", NULL, &def);
1878 }
1879
1880 if (drvname) {
1881 driver = audio_driver_lookup(drvname);
1882 if (driver) {
1883 done = !audio_driver_init(s, driver);
1884 } else {
1885 dolog ("Unknown audio driver `%s'\n", drvname);
1886 dolog ("Run with -audio-help to list available drivers\n");
1887 }
1888 }
1889
1890 if (!done) {
1891 for (i = 0; !done && i < ARRAY_SIZE(audio_prio_list); i++) {
1892 driver = audio_driver_lookup(audio_prio_list[i]);
1893 if (driver && driver->can_be_default) {
1894 done = !audio_driver_init(s, driver);
1895 }
1896 }
1897 }
1898
1899 if (!done) {
1900 driver = audio_driver_lookup("none");
1901 done = !audio_driver_init(s, driver);
1902 assert(done);
1903 dolog("warning: Using timer based audio emulation\n");
1904 }
1905
1906 if (conf.period.hertz <= 0) {
1907 if (conf.period.hertz < 0) {
1908 dolog ("warning: Timer period is negative - %d "
1909 "treating as zero\n",
1910 conf.period.hertz);
1911 }
1912 conf.period.ticks = 1;
1913 } else {
1914 conf.period.ticks = NANOSECONDS_PER_SECOND / conf.period.hertz;
1915 }
1916
1917 e = qemu_add_vm_change_state_handler (audio_vm_change_state_handler, s);
1918 if (!e) {
1919 dolog ("warning: Could not register change state handler\n"
1920 "(Audio can continue looping even after stopping the VM)\n");
1921 }
1922
1923 QLIST_INIT (&s->card_head);
1924 vmstate_register (NULL, 0, &vmstate_audio, s);
1925 }
1926
1927 void AUD_register_card (const char *name, QEMUSoundCard *card)
1928 {
1929 audio_init ();
1930 card->name = g_strdup (name);
1931 memset (&card->entries, 0, sizeof (card->entries));
1932 QLIST_INSERT_HEAD (&glob_audio_state.card_head, card, entries);
1933 }
1934
1935 void AUD_remove_card (QEMUSoundCard *card)
1936 {
1937 QLIST_REMOVE (card, entries);
1938 g_free (card->name);
1939 }
1940
1941
1942 CaptureVoiceOut *AUD_add_capture (
1943 struct audsettings *as,
1944 struct audio_capture_ops *ops,
1945 void *cb_opaque
1946 )
1947 {
1948 AudioState *s = &glob_audio_state;
1949 CaptureVoiceOut *cap;
1950 struct capture_callback *cb;
1951
1952 if (audio_validate_settings (as)) {
1953 dolog ("Invalid settings were passed when trying to add capture\n");
1954 audio_print_settings (as);
1955 goto err0;
1956 }
1957
1958 cb = audio_calloc(__func__, 1, sizeof(*cb));
1959 if (!cb) {
1960 dolog ("Could not allocate capture callback information, size %zu\n",
1961 sizeof (*cb));
1962 goto err0;
1963 }
1964 cb->ops = *ops;
1965 cb->opaque = cb_opaque;
1966
1967 cap = audio_pcm_capture_find_specific (as);
1968 if (cap) {
1969 QLIST_INSERT_HEAD (&cap->cb_head, cb, entries);
1970 return cap;
1971 }
1972 else {
1973 HWVoiceOut *hw;
1974 CaptureVoiceOut *cap;
1975
1976 cap = audio_calloc(__func__, 1, sizeof(*cap));
1977 if (!cap) {
1978 dolog ("Could not allocate capture voice, size %zu\n",
1979 sizeof (*cap));
1980 goto err1;
1981 }
1982
1983 hw = &cap->hw;
1984 QLIST_INIT (&hw->sw_head);
1985 QLIST_INIT (&cap->cb_head);
1986
1987 /* XXX find a more elegant way */
1988 hw->samples = 4096 * 4;
1989 hw->mix_buf = audio_calloc(__func__, hw->samples,
1990 sizeof(struct st_sample));
1991 if (!hw->mix_buf) {
1992 dolog ("Could not allocate capture mix buffer (%d samples)\n",
1993 hw->samples);
1994 goto err2;
1995 }
1996
1997 audio_pcm_init_info (&hw->info, as);
1998
1999 cap->buf = audio_calloc(__func__, hw->samples, 1 << hw->info.shift);
2000 if (!cap->buf) {
2001 dolog ("Could not allocate capture buffer "
2002 "(%d samples, each %d bytes)\n",
2003 hw->samples, 1 << hw->info.shift);
2004 goto err3;
2005 }
2006
2007 hw->clip = mixeng_clip
2008 [hw->info.nchannels == 2]
2009 [hw->info.sign]
2010 [hw->info.swap_endianness]
2011 [audio_bits_to_index (hw->info.bits)];
2012
2013 QLIST_INSERT_HEAD (&s->cap_head, cap, entries);
2014 QLIST_INSERT_HEAD (&cap->cb_head, cb, entries);
2015
2016 QLIST_FOREACH(hw, &glob_audio_state.hw_head_out, entries) {
2017 audio_attach_capture (hw);
2018 }
2019 return cap;
2020
2021 err3:
2022 g_free (cap->hw.mix_buf);
2023 err2:
2024 g_free (cap);
2025 err1:
2026 g_free (cb);
2027 err0:
2028 return NULL;
2029 }
2030 }
2031
2032 void AUD_del_capture (CaptureVoiceOut *cap, void *cb_opaque)
2033 {
2034 struct capture_callback *cb;
2035
2036 for (cb = cap->cb_head.lh_first; cb; cb = cb->entries.le_next) {
2037 if (cb->opaque == cb_opaque) {
2038 cb->ops.destroy (cb_opaque);
2039 QLIST_REMOVE (cb, entries);
2040 g_free (cb);
2041
2042 if (!cap->cb_head.lh_first) {
2043 SWVoiceOut *sw = cap->hw.sw_head.lh_first, *sw1;
2044
2045 while (sw) {
2046 SWVoiceCap *sc = (SWVoiceCap *) sw;
2047 #ifdef DEBUG_CAPTURE
2048 dolog ("freeing %s\n", sw->name);
2049 #endif
2050
2051 sw1 = sw->entries.le_next;
2052 if (sw->rate) {
2053 st_rate_stop (sw->rate);
2054 sw->rate = NULL;
2055 }
2056 QLIST_REMOVE (sw, entries);
2057 QLIST_REMOVE (sc, entries);
2058 g_free (sc);
2059 sw = sw1;
2060 }
2061 QLIST_REMOVE (cap, entries);
2062 g_free (cap->hw.mix_buf);
2063 g_free (cap->buf);
2064 g_free (cap);
2065 }
2066 return;
2067 }
2068 }
2069 }
2070
2071 void AUD_set_volume_out (SWVoiceOut *sw, int mute, uint8_t lvol, uint8_t rvol)
2072 {
2073 if (sw) {
2074 HWVoiceOut *hw = sw->hw;
2075
2076 sw->vol.mute = mute;
2077 sw->vol.l = nominal_volume.l * lvol / 255;
2078 sw->vol.r = nominal_volume.r * rvol / 255;
2079
2080 if (hw->pcm_ops->ctl_out) {
2081 hw->pcm_ops->ctl_out (hw, VOICE_VOLUME, sw);
2082 }
2083 }
2084 }
2085
2086 void AUD_set_volume_in (SWVoiceIn *sw, int mute, uint8_t lvol, uint8_t rvol)
2087 {
2088 if (sw) {
2089 HWVoiceIn *hw = sw->hw;
2090
2091 sw->vol.mute = mute;
2092 sw->vol.l = nominal_volume.l * lvol / 255;
2093 sw->vol.r = nominal_volume.r * rvol / 255;
2094
2095 if (hw->pcm_ops->ctl_in) {
2096 hw->pcm_ops->ctl_in (hw, VOICE_VOLUME, sw);
2097 }
2098 }
2099 }
QEmu