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