VirtualBox

source: vbox/trunk/src/VBox/Devices/Audio/audio.c@ 1959

Last change on this file since 1959 was 1551, checked in by vboxsync, 18 years ago

Mac OS X audio support (only playback).
  • Property svn:eol-style set to native
  • Property svn:keywords set to Author Date Id Revision
File size: 48.1 KB
Line 
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#define LOG_GROUP LOG_GROUP_DEV_AUDIO
25#include <VBox/pdm.h>
26#include <VBox/err.h>
27#include <VBox/mm.h>
28
29#include <VBox/log.h>
30#include <iprt/assert.h>
31#include <iprt/uuid.h>
32#include <iprt/string.h>
33#include <iprt/alloc.h>
34
35#include "Builtins.h"
36#include "../../vl_vbox.h"
37
38#include <ctype.h>
39#include <stdlib.h>
40
41#define AUDIO_CAP "audio"
42#include "audio.h"
43#include "audio_int.h"
44
45#ifdef __WIN__
46#define strcasecmp stricmp
47#endif
48
49/* #define DEBUG_PLIVE */
50/* #define DEBUG_LIVE */
51/* #define DEBUG_OUT */
52/* #define DEBUG_CAPTURE */
53
54#define SW_NAME(sw) (sw)->name ? (sw)->name : "unknown"
55
56typedef struct DRVAUDIO
57{
58 /** The audio interface. */
59 PDMIAUDIOCONNECTOR IAudioConnector;
60 /** Pointer to the driver instance. */
61 PPDMDRVINS pDrvIns;
62} DRVAUDIO, *PDRVAUDIO;
63
64static struct audio_driver *drvtab[] = {
65#ifdef __LINUX__
66 &oss_audio_driver,
67#ifdef VBOX_WITH_ALSA
68 &alsa_audio_driver,
69#endif
70#endif
71#ifdef __DARWIN__
72 &coreaudio_audio_driver,
73#endif
74#ifdef __WIN__
75 &dsound_audio_driver,
76#endif
77#ifdef __L4ENV__
78 &oss_audio_driver,
79#endif
80 &no_audio_driver
81};
82
83struct fixed_settings {
84 int enabled;
85 int nb_voices;
86 int greedy;
87 audsettings_t settings;
88};
89
90static struct {
91 struct fixed_settings fixed_out;
92 struct fixed_settings fixed_in;
93 union {
94 int hz;
95 int64_t ticks;
96 } period;
97 int plive;
98} conf = {
99 { /* DAC fixed settings */
100 1, /* enabled */
101 1, /* nb_voices */
102 1, /* greedy */
103 {
104 44100, /* freq */
105 2, /* nchannels */
106 AUD_FMT_S16 /* fmt */
107 }
108 },
109
110 { /* ADC fixed settings */
111 1, /* enabled */
112 1, /* nb_voices */
113 1, /* greedy */
114 {
115 44100, /* freq */
116 2, /* nchannels */
117 AUD_FMT_S16 /* fmt */
118 }
119 },
120
121 { 100 }, /* period */
122 0, /* plive */
123};
124
125static AudioState glob_audio_state;
126
127volume_t nominal_volume = {
128 0,
129#ifdef FLOAT_MIXENG
130 1.0,
131 1.0
132#else
133#ifndef VBOX
134 UINT_MAX,
135 UINT_MAX
136#else
137 INT_MAX,
138 INT_MAX
139#endif
140#endif
141};
142
143#ifdef VBOX
144volume_t pcm_out_volume =
145{
146 0,
147 INT_MAX,
148 INT_MAX
149};
150volume_t pcm_in_volume =
151{
152 0,
153 INT_MAX,
154 INT_MAX
155};
156#endif
157
158/* http://www.df.lth.se/~john_e/gems/gem002d.html */
159/* http://www.multi-platforms.com/Tips/PopCount.htm */
160uint32_t popcount (uint32_t u)
161{
162 u = ((u&0x55555555) + ((u>>1)&0x55555555));
163 u = ((u&0x33333333) + ((u>>2)&0x33333333));
164 u = ((u&0x0f0f0f0f) + ((u>>4)&0x0f0f0f0f));
165 u = ((u&0x00ff00ff) + ((u>>8)&0x00ff00ff));
166 u = ( u&0x0000ffff) + (u>>16);
167 return u;
168}
169
170inline uint32_t lsbindex (uint32_t u)
171{
172 return popcount ((u&-u)-1);
173}
174
175uint64_t audio_get_clock (void)
176{
177 AudioState *s;
178
179 s = &glob_audio_state;
180 return s->pDrvIns->pDrvHlp->pfnTMGetVirtualTime (s->pDrvIns);
181}
182
183uint64_t audio_get_ticks_per_sec (void)
184{
185 AudioState *s;
186
187 s = &glob_audio_state;
188 return s->pDrvIns->pDrvHlp->pfnTMGetVirtualFreq (s->pDrvIns);
189}
190
191#ifdef AUDIO_IS_FLAWLESS_AND_NO_CHECKS_ARE_REQURIED
192#error No its not
193#else
194int audio_bug (const char *funcname, int cond)
195{
196 if (cond) {
197 static int shown;
198
199 AUD_log (NULL, "A bug was just triggered in %s\n", funcname);
200 if (!shown) {
201 shown = 1;
202 AUD_log (NULL, "Save all your work and restart without audio\n");
203 AUD_log (NULL, "Please send a bug report to InnoTek\n");
204 AUD_log (NULL, "I am sorry\n");
205 }
206 AUD_log (NULL, "Context:\n");
207
208#if defined AUDIO_BREAKPOINT_ON_BUG
209# if defined HOST_I386
210# if defined __GNUC__
211 __asm__ ("int3");
212# elif defined _MSC_VER
213 _asm _emit 0xcc;
214# else
215 abort ();
216# endif
217# else
218 abort ();
219# endif
220#endif
221 }
222
223 return cond;
224}
225#endif
226
227void *audio_calloc (const char *funcname, int nmemb, size_t size)
228{
229 int cond;
230 size_t len;
231
232 len = nmemb * size;
233 cond = !nmemb || !size;
234 cond |= nmemb < 0;
235 cond |= len < size;
236
237 if (audio_bug ("audio_calloc", cond)) {
238 AUD_log (NULL, "%s passed invalid arguments to audio_calloc\n",
239 funcname);
240 AUD_log (NULL, "nmemb=%d size=%" FMTZ "u (len=%" FMTZ "u)\n",
241 nmemb, size, len);
242 return NULL;
243 }
244
245 return qemu_mallocz (len);
246}
247
248static const char *audio_audfmt_to_string (audfmt_e fmt)
249{
250 switch (fmt) {
251 case AUD_FMT_U8:
252 return "U8";
253
254 case AUD_FMT_U16:
255 return "U16";
256
257 case AUD_FMT_S8:
258 return "S8";
259
260 case AUD_FMT_S16:
261 return "S16";
262 }
263
264 dolog ("Bogus audfmt %d returning S16\n", fmt);
265 return "S16";
266}
267
268static audfmt_e audio_string_to_audfmt (const char *s, audfmt_e defval,
269 int *defaultp)
270{
271 if (!strcasecmp (s, "u8")) {
272 *defaultp = 0;
273 return AUD_FMT_U8;
274 }
275 else if (!strcasecmp (s, "u16")) {
276 *defaultp = 0;
277 return AUD_FMT_U16;
278 }
279 else if (!strcasecmp (s, "s8")) {
280 *defaultp = 0;
281 return AUD_FMT_S8;
282 }
283 else if (!strcasecmp (s, "s16")) {
284 *defaultp = 0;
285 return AUD_FMT_S16;
286 }
287 else {
288 dolog ("Bogus audio format `%s' using %s\n",
289 s, audio_audfmt_to_string (defval));
290 *defaultp = 1;
291 return defval;
292 }
293}
294
295static audfmt_e audio_get_conf_fmt (const char *envname,
296 audfmt_e defval,
297 int *defaultp)
298{
299 const char *var = getenv (envname);
300 if (!var) {
301 *defaultp = 1;
302 return defval;
303 }
304 return audio_string_to_audfmt (var, defval, defaultp);
305}
306
307static int audio_get_conf_int (const char *key, int defval, int *defaultp)
308{
309 int val;
310 char *strval;
311
312 strval = getenv (key);
313 if (strval) {
314 *defaultp = 0;
315 val = atoi (strval);
316 return val;
317 }
318 else {
319 *defaultp = 1;
320 return defval;
321 }
322}
323
324static const char *audio_get_conf_str (const char *key,
325 const char *defval,
326 int *defaultp)
327{
328 const char *val = getenv (key);
329 if (!val) {
330 *defaultp = 1;
331 return defval;
332 }
333 else {
334 *defaultp = 0;
335 return val;
336 }
337}
338
339void AUD_vlog (const char *cap, const char *fmt, va_list ap)
340{
341 if (cap) {
342 Log (("%s: %N", cap, fmt, &ap));
343 }
344 else {
345 Log (("%N", fmt, &ap));
346 }
347}
348
349void AUD_log (const char *cap, const char *fmt, ...)
350{
351 va_list ap;
352
353 va_start (ap, fmt);
354 AUD_vlog (cap, fmt, ap);
355 va_end (ap);
356}
357
358static void audio_process_options (const char *prefix,
359 struct audio_option *opt)
360{
361 char *optname;
362 const char vbox_prefix[] = "VBOX_";
363 size_t preflen;
364
365 if (audio_bug (AUDIO_FUNC, !prefix)) {
366 dolog ("prefix = NULL\n");
367 return;
368 }
369
370 if (audio_bug (AUDIO_FUNC, !opt)) {
371 dolog ("opt = NULL\n");
372 return;
373 }
374
375 preflen = strlen (prefix);
376
377 for (; opt->name; opt++) {
378 size_t len, i;
379 int def;
380
381 if (!opt->valp) {
382 dolog ("Option value pointer for `%s' is not set\n",
383 opt->name);
384 continue;
385 }
386
387 len = strlen (opt->name);
388 /* len of opt->name + len of prefix + size of vbox_prefix
389 * (includes trailing zero) + zero + underscore (on behalf of
390 * sizeof) */
391 optname = qemu_malloc (len + preflen + sizeof (vbox_prefix) + 1);
392 if (!optname) {
393 dolog ("Could not allocate memory for option name `%s'\n",
394 opt->name);
395 continue;
396 }
397
398 strcpy (optname, vbox_prefix);
399
400 /* copy while upcasing, including trailing zero */
401 for (i = 0; i <= preflen; ++i) {
402 optname[i + sizeof (vbox_prefix) - 1] = toupper (prefix[i]);
403 }
404 strcat (optname, "_");
405 strcat (optname, opt->name);
406
407 def = 1;
408 switch (opt->tag) {
409 case AUD_OPT_BOOL:
410 case AUD_OPT_INT:
411 {
412 int *intp = opt->valp;
413 *intp = audio_get_conf_int (optname, *intp, &def);
414 }
415 break;
416
417 case AUD_OPT_FMT:
418 {
419 audfmt_e *fmtp = opt->valp;
420 *fmtp = audio_get_conf_fmt (optname, *fmtp, &def);
421 }
422 break;
423
424 case AUD_OPT_STR:
425 {
426 const char **strp = opt->valp;
427 *strp = audio_get_conf_str (optname, *strp, &def);
428 }
429 break;
430
431 default:
432 dolog ("Bad value tag for option `%s' - %d\n",
433 optname, opt->tag);
434 break;
435 }
436
437 if (!opt->overridenp) {
438 opt->overridenp = &opt->overriden;
439 }
440 *opt->overridenp = !def;
441 qemu_free (optname);
442 }
443}
444
445static void audio_print_settings (audsettings_t *as)
446{
447 dolog ("frequency=%d nchannels=%d fmt=", as->freq, as->nchannels);
448
449 switch (as->fmt) {
450 case AUD_FMT_S8:
451 AUD_log (NULL, "S8");
452 break;
453 case AUD_FMT_U8:
454 AUD_log (NULL, "U8");
455 break;
456 case AUD_FMT_S16:
457 AUD_log (NULL, "S16");
458 break;
459 case AUD_FMT_U16:
460 AUD_log (NULL, "U16");
461 break;
462 default:
463 AUD_log (NULL, "invalid(%d)", as->fmt);
464 break;
465 }
466
467 AUD_log (NULL, " endianness=");
468 switch (as->endianness) {
469 case 0:
470 AUD_log (NULL, "little");
471 break;
472 case 1:
473 AUD_log (NULL, "big");
474 break;
475 default:
476 AUD_log (NULL, "invalid");
477 break;
478 }
479 AUD_log (NULL, "\n");
480}
481
482static int audio_validate_settings (audsettings_t *as)
483{
484 int invalid;
485
486 invalid = as->nchannels != 1 && as->nchannels != 2;
487 invalid |= as->endianness != 0 && as->endianness != 1;
488
489 switch (as->fmt) {
490 case AUD_FMT_S8:
491 case AUD_FMT_U8:
492 case AUD_FMT_S16:
493 case AUD_FMT_U16:
494 break;
495 default:
496 invalid = 1;
497 break;
498 }
499
500 invalid |= as->freq <= 0;
501 return invalid ? -1 : 0;
502}
503
504static int audio_pcm_info_eq (struct audio_pcm_info *info, audsettings_t *as)
505{
506 int bits = 8, sign = 0;
507
508 switch (as->fmt) {
509 case AUD_FMT_S8:
510 sign = 1;
511 case AUD_FMT_U8:
512 break;
513
514 case AUD_FMT_S16:
515 sign = 1;
516 case AUD_FMT_U16:
517 bits = 16;
518 break;
519 }
520 return info->freq == as->freq
521 && info->nchannels == as->nchannels
522 && info->sign == sign
523 && info->bits == bits
524 && info->swap_endianness == (as->endianness != AUDIO_HOST_ENDIANNESS);
525}
526
527void audio_pcm_init_info (struct audio_pcm_info *info, audsettings_t *as)
528{
529 int bits = 8, sign = 0;
530
531 switch (as->fmt) {
532 case AUD_FMT_S8:
533 sign = 1;
534 case AUD_FMT_U8:
535 break;
536
537 case AUD_FMT_S16:
538 sign = 1;
539 case AUD_FMT_U16:
540 bits = 16;
541 break;
542 }
543
544 info->freq = as->freq;
545 info->bits = bits;
546 info->sign = sign;
547 info->nchannels = as->nchannels;
548 info->shift = (as->nchannels == 2) + (bits == 16);
549 info->align = (1 << info->shift) - 1;
550 info->bytes_per_second = info->freq << info->shift;
551 info->swap_endianness = (as->endianness != AUDIO_HOST_ENDIANNESS);
552}
553
554void audio_pcm_info_clear_buf (struct audio_pcm_info *info, void *buf, int len)
555{
556 if (!len) {
557 return;
558 }
559
560 if (info->sign) {
561 memset (buf, 0x00, len << info->shift);
562 }
563 else {
564 if (info->bits == 8) {
565 memset (buf, 0x80, len << info->shift);
566 }
567 else {
568 int i;
569 uint16_t *p = buf;
570 int shift = info->nchannels - 1;
571 short s = INT16_MAX;
572
573 if (info->swap_endianness) {
574 s = bswap16 (s);
575 }
576
577 for (i = 0; i < len << shift; i++) {
578 p[i] = s;
579 }
580 }
581 }
582}
583
584/*
585 * Capture
586 */
587static void noop_conv (st_sample_t *dst, const void *src,
588 int samples, volume_t *vol)
589{
590 (void) src;
591 (void) dst;
592 (void) samples;
593 (void) vol;
594}
595
596static CaptureVoiceOut *audio_pcm_capture_find_specific (
597 AudioState *s,
598 audsettings_t *as
599 )
600{
601 CaptureVoiceOut *cap;
602
603 for (cap = s->cap_head.lh_first; cap; cap = cap->entries.le_next) {
604 if (audio_pcm_info_eq (&cap->hw.info, as)) {
605 return cap;
606 }
607 }
608 return NULL;
609}
610
611static void audio_notify_capture (CaptureVoiceOut *cap, audcnotification_e cmd)
612{
613 struct capture_callback *cb;
614
615#ifdef DEBUG_CAPTURE
616 dolog ("notification %d sent\n", cmd);
617#endif
618 for (cb = cap->cb_head.lh_first; cb; cb = cb->entries.le_next) {
619 cb->ops.notify (cb->opaque, cmd);
620 }
621}
622
623static void audio_capture_maybe_changed (CaptureVoiceOut *cap, int enabled)
624{
625 if (cap->hw.enabled != enabled) {
626 audcnotification_e cmd;
627 cap->hw.enabled = enabled;
628 cmd = enabled ? AUD_CNOTIFY_ENABLE : AUD_CNOTIFY_DISABLE;
629 audio_notify_capture (cap, cmd);
630 }
631}
632
633static void audio_recalc_and_notify_capture (CaptureVoiceOut *cap)
634{
635 HWVoiceOut *hw = &cap->hw;
636 SWVoiceOut *sw;
637 int enabled = 0;
638
639 for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) {
640 if (sw->active) {
641 enabled = 1;
642 break;
643 }
644 }
645 audio_capture_maybe_changed (cap, enabled);
646}
647
648static void audio_detach_capture (HWVoiceOut *hw)
649{
650 SWVoiceCap *sc = hw->cap_head.lh_first;
651
652 while (sc) {
653 SWVoiceCap *sc1 = sc->entries.le_next;
654 SWVoiceOut *sw = &sc->sw;
655 CaptureVoiceOut *cap = sc->cap;
656 int was_active = sw->active;
657
658 if (sw->rate) {
659 st_rate_stop (sw->rate);
660 sw->rate = NULL;
661 }
662
663 LIST_REMOVE (sw, entries);
664 LIST_REMOVE (sc, entries);
665 qemu_free (sc);
666 if (was_active) {
667 /* We have removed soft voice from the capture:
668 this might have changed the overall status of the capture
669 since this might have been the only active voice */
670 audio_recalc_and_notify_capture (cap);
671 }
672 sc = sc1;
673 }
674}
675
676static int audio_attach_capture (AudioState *s, HWVoiceOut *hw)
677{
678 CaptureVoiceOut *cap;
679
680 audio_detach_capture (hw);
681 for (cap = s->cap_head.lh_first; cap; cap = cap->entries.le_next) {
682 SWVoiceCap *sc;
683 SWVoiceOut *sw;
684 HWVoiceOut *hw_cap = &cap->hw;
685
686 sc = audio_calloc (AUDIO_FUNC, 1, sizeof (*sc));
687 if (!sc) {
688 dolog ("Could not allocate soft capture voice (%u bytes)\n",
689 sizeof (*sc));
690 return -1;
691 }
692
693 sc->cap = cap;
694 sw = &sc->sw;
695 sw->hw = hw_cap;
696 sw->info = hw->info;
697 sw->empty = 1;
698 sw->active = hw->enabled;
699 sw->conv = noop_conv;
700 sw->ratio = ((int64_t) hw_cap->info.freq << 32) / sw->info.freq;
701 sw->rate = st_rate_start (sw->info.freq, hw_cap->info.freq);
702 if (!sw->rate) {
703 dolog ("Could not start rate conversion for `%s'\n", SW_NAME (sw));
704 qemu_free (sw);
705 return -1;
706 }
707 LIST_INSERT_HEAD (&hw_cap->sw_head, sw, entries);
708 LIST_INSERT_HEAD (&hw->cap_head, sc, entries);
709#ifdef DEBUG_CAPTURE
710 asprintf (&sw->name, "for %p %d,%d,%d",
711 hw, sw->info.freq, sw->info.bits, sw->info.nchannels);
712 dolog ("Added %s active = %d\n", sw->name, sw->active);
713#endif
714 if (sw->active) {
715 audio_capture_maybe_changed (cap, 1);
716 }
717 }
718 return 0;
719}
720
721/*
722 * Hard voice (capture)
723 */
724static int audio_pcm_hw_find_min_in (HWVoiceIn *hw)
725{
726 SWVoiceIn *sw;
727 int m = hw->total_samples_captured;
728
729 for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) {
730 if (sw->active) {
731 m = audio_MIN (m, sw->total_hw_samples_acquired);
732 }
733 }
734 return m;
735}
736
737int audio_pcm_hw_get_live_in (HWVoiceIn *hw)
738{
739 int live = hw->total_samples_captured - audio_pcm_hw_find_min_in (hw);
740 if (audio_bug (AUDIO_FUNC, live < 0 || live > hw->samples)) {
741 dolog ("live=%d hw->samples=%d\n", live, hw->samples);
742 return 0;
743 }
744 return live;
745}
746
747/*
748 * Soft voice (capture)
749 */
750static int audio_pcm_sw_get_rpos_in (SWVoiceIn *sw)
751{
752 HWVoiceIn *hw = sw->hw;
753 int live = hw->total_samples_captured - sw->total_hw_samples_acquired;
754 int rpos;
755
756 if (audio_bug (AUDIO_FUNC, live < 0 || live > hw->samples)) {
757 dolog ("live=%d hw->samples=%d\n", live, hw->samples);
758 return 0;
759 }
760
761 rpos = hw->wpos - live;
762 if (rpos >= 0) {
763 return rpos;
764 }
765 else {
766 return hw->samples + rpos;
767 }
768}
769
770int audio_pcm_sw_read (SWVoiceIn *sw, void *buf, int size)
771{
772 HWVoiceIn *hw = sw->hw;
773 int samples, live, ret = 0, swlim, isamp, osamp, rpos, total = 0;
774 st_sample_t *src, *dst = sw->buf;
775
776 rpos = audio_pcm_sw_get_rpos_in (sw) % hw->samples;
777
778 live = hw->total_samples_captured - sw->total_hw_samples_acquired;
779 if (audio_bug (AUDIO_FUNC, live < 0 || live > hw->samples)) {
780 dolog ("live_in=%d hw->samples=%d\n", live, hw->samples);
781 return 0;
782 }
783
784 samples = size >> sw->info.shift;
785 if (!live) {
786 return 0;
787 }
788
789 swlim = (live * sw->ratio) >> 32;
790 swlim = audio_MIN (swlim, samples);
791
792 while (swlim) {
793 src = hw->conv_buf + rpos;
794 isamp = hw->wpos - rpos;
795 /* XXX: <= ? */
796 if (isamp <= 0) {
797 isamp = hw->samples - rpos;
798 }
799
800 if (!isamp) {
801 break;
802 }
803 osamp = swlim;
804
805 if (audio_bug (AUDIO_FUNC, osamp < 0)) {
806 dolog ("osamp=%d\n", osamp);
807 return 0;
808 }
809
810 st_rate_flow (sw->rate, src, dst, &isamp, &osamp);
811 swlim -= osamp;
812 rpos = (rpos + isamp) % hw->samples;
813 dst += osamp;
814 ret += osamp;
815 total += isamp;
816 }
817
818 sw->clip (buf, sw->buf, ret);
819 sw->total_hw_samples_acquired += total;
820 return ret << sw->info.shift;
821}
822
823/*
824 * Hard voice (playback)
825 */
826static int audio_pcm_hw_find_min_out (HWVoiceOut *hw, int *nb_livep)
827{
828 SWVoiceOut *sw;
829 int m = INT_MAX;
830 int nb_live = 0;
831
832 for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) {
833 if (sw->active || !sw->empty) {
834 m = audio_MIN (m, sw->total_hw_samples_mixed);
835 nb_live += 1;
836 }
837 }
838
839 *nb_livep = nb_live;
840 return m;
841}
842
843int audio_pcm_hw_get_live_out2 (HWVoiceOut *hw, int *nb_live)
844{
845 int smin;
846
847 smin = audio_pcm_hw_find_min_out (hw, nb_live);
848
849 if (!*nb_live) {
850 return 0;
851 }
852 else {
853 int live = smin;
854
855 if (audio_bug (AUDIO_FUNC, live < 0 || live > hw->samples)) {
856 dolog ("live=%d hw->samples=%d\n", live, hw->samples);
857 return 0;
858 }
859 return live;
860 }
861}
862
863int audio_pcm_hw_get_live_out (HWVoiceOut *hw)
864{
865 int nb_live;
866 int live;
867
868 live = audio_pcm_hw_get_live_out2 (hw, &nb_live);
869 if (audio_bug (AUDIO_FUNC, live < 0 || live > hw->samples)) {
870 dolog ("live=%d hw->samples=%d\n", live, hw->samples);
871 return 0;
872 }
873 return live;
874}
875
876/*
877 * Soft voice (playback)
878 */
879int audio_pcm_sw_write (SWVoiceOut *sw, void *buf, int size)
880{
881 int hwsamples, samples, isamp, osamp, wpos, live, dead, left, swlim, blck;
882 int ret = 0, pos = 0, total = 0;
883
884 if (!sw) {
885 return size;
886 }
887
888 hwsamples = sw->hw->samples;
889
890 live = sw->total_hw_samples_mixed;
891 if (audio_bug (AUDIO_FUNC, live < 0 || live > hwsamples)){
892 dolog ("live=%d hw->samples=%d\n", live, hwsamples);
893 return 0;
894 }
895
896 if (live == hwsamples) {
897#ifdef DEBUG_OUT
898 dolog ("%s is full %d\n", sw->name, live);
899#endif
900 return 0;
901 }
902
903 wpos = (sw->hw->rpos + live) % hwsamples;
904 samples = size >> sw->info.shift;
905
906 dead = hwsamples - live;
907 swlim = ((int64_t) dead << 32) / sw->ratio;
908 swlim = audio_MIN (swlim, samples);
909 if (swlim) {
910#ifndef VBOX
911 sw->conv (sw->buf, buf, swlim, &sw->vol);
912#else
913 sw->conv (sw->buf, buf, swlim, &pcm_out_volume);
914#endif
915 }
916
917 while (swlim) {
918 dead = hwsamples - live;
919 left = hwsamples - wpos;
920 blck = audio_MIN (dead, left);
921 if (!blck) {
922 break;
923 }
924 isamp = swlim;
925 osamp = blck;
926 st_rate_flow_mix (
927 sw->rate,
928 sw->buf + pos,
929 sw->hw->mix_buf + wpos,
930 &isamp,
931 &osamp
932 );
933 ret += isamp;
934 swlim -= isamp;
935 pos += isamp;
936 live += osamp;
937 wpos = (wpos + osamp) % hwsamples;
938 total += osamp;
939 }
940
941 sw->total_hw_samples_mixed += total;
942 sw->empty = sw->total_hw_samples_mixed == 0;
943
944#ifdef DEBUG_OUT
945 dolog (
946 "%s: write size %d ret %d total sw %d\n",
947 SW_NAME (sw),
948 size >> sw->info.shift,
949 ret,
950 sw->total_hw_samples_mixed
951 );
952#endif
953
954 return ret << sw->info.shift;
955}
956
957#ifdef DEBUG_AUDIO
958static void audio_pcm_print_info (const char *cap, struct audio_pcm_info *info)
959{
960 dolog ("%s: bits %d, sign %d, freq %d, nchan %d\n",
961 cap, info->bits, info->sign, info->freq, info->nchannels);
962}
963#endif
964
965#define DAC
966#include "audio_template.h"
967#undef DAC
968#include "audio_template.h"
969
970int AUD_write (SWVoiceOut *sw, void *buf, int size)
971{
972 int bytes;
973
974 if (!sw) {
975 /* XXX: Consider options */
976 return size;
977 }
978
979 if (!sw->hw->enabled) {
980 dolog ("Writing to disabled voice %s\n", SW_NAME (sw));
981 return 0;
982 }
983
984 bytes = sw->hw->pcm_ops->write (sw, buf, size);
985 return bytes;
986}
987
988int AUD_read (SWVoiceIn *sw, void *buf, int size)
989{
990 int bytes;
991
992 if (!sw) {
993 /* XXX: Consider options */
994 return size;
995 }
996
997 if (!sw->hw->enabled) {
998 dolog ("Reading from disabled voice %s\n", SW_NAME (sw));
999 return 0;
1000 }
1001
1002 bytes = sw->hw->pcm_ops->read (sw, buf, size);
1003 return bytes;
1004}
1005
1006int AUD_get_buffer_size_out (SWVoiceOut *sw)
1007{
1008 return sw->hw->samples << sw->hw->info.shift;
1009}
1010
1011void AUD_set_active_out (SWVoiceOut *sw, int on)
1012{
1013 HWVoiceOut *hw;
1014
1015 if (!sw) {
1016 return;
1017 }
1018
1019 hw = sw->hw;
1020 if (sw->active != on) {
1021 SWVoiceOut *temp_sw;
1022 SWVoiceCap *sc;
1023
1024 if (on) {
1025 hw->pending_disable = 0;
1026 if (!hw->enabled) {
1027 hw->enabled = 1;
1028 hw->pcm_ops->ctl_out (hw, VOICE_ENABLE);
1029 }
1030 }
1031 else {
1032 if (hw->enabled) {
1033 int nb_active = 0;
1034
1035 for (temp_sw = hw->sw_head.lh_first; temp_sw;
1036 temp_sw = temp_sw->entries.le_next) {
1037 nb_active += temp_sw->active != 0;
1038 }
1039
1040 hw->pending_disable = nb_active == 1;
1041 }
1042 }
1043
1044 for (sc = hw->cap_head.lh_first; sc; sc = sc->entries.le_next) {
1045 sc->sw.active = hw->enabled;
1046 if (hw->enabled) {
1047 audio_capture_maybe_changed (sc->cap, 1);
1048 }
1049 }
1050 sw->active = on;
1051 }
1052}
1053
1054void AUD_set_active_in (SWVoiceIn *sw, int on)
1055{
1056 HWVoiceIn *hw;
1057
1058 if (!sw) {
1059 return;
1060 }
1061
1062 hw = sw->hw;
1063 if (sw->active != on) {
1064 SWVoiceIn *temp_sw;
1065
1066 if (on) {
1067 if (!hw->enabled) {
1068 hw->enabled = 1;
1069 hw->pcm_ops->ctl_in (hw, VOICE_ENABLE);
1070 }
1071 sw->total_hw_samples_acquired = hw->total_samples_captured;
1072 }
1073 else {
1074 if (hw->enabled) {
1075 int nb_active = 0;
1076
1077 for (temp_sw = hw->sw_head.lh_first; temp_sw;
1078 temp_sw = temp_sw->entries.le_next) {
1079 nb_active += temp_sw->active != 0;
1080 }
1081
1082 if (nb_active == 1) {
1083 hw->enabled = 0;
1084 hw->pcm_ops->ctl_in (hw, VOICE_DISABLE);
1085 }
1086 }
1087 }
1088 sw->active = on;
1089 }
1090}
1091
1092static int audio_get_avail (SWVoiceIn *sw)
1093{
1094 int live;
1095
1096 if (!sw) {
1097 return 0;
1098 }
1099
1100 live = sw->hw->total_samples_captured - sw->total_hw_samples_acquired;
1101 if (audio_bug (AUDIO_FUNC, live < 0 || live > sw->hw->samples)) {
1102 dolog ("live=%d sw->hw->samples=%d\n", live, sw->hw->samples);
1103 return 0;
1104 }
1105
1106 ldebug (
1107 "%s: get_avail live %d ret %lld\n",
1108 SW_NAME (sw),
1109 live, (((int64_t) live << 32) / sw->ratio) << sw->info.shift
1110 );
1111
1112 return (((int64_t) live << 32) / sw->ratio) << sw->info.shift;
1113}
1114
1115static int audio_get_free (SWVoiceOut *sw)
1116{
1117 int live, dead;
1118
1119 if (!sw) {
1120 return 0;
1121 }
1122
1123 live = sw->total_hw_samples_mixed;
1124
1125 if (audio_bug (AUDIO_FUNC, live < 0 || live > sw->hw->samples)) {
1126 dolog ("live=%d sw->hw->samples=%d\n", live, sw->hw->samples);
1127 return 0;
1128 }
1129
1130 dead = sw->hw->samples - live;
1131
1132#ifdef DEBUG_OUT
1133 dolog ("%s: get_free live %d dead %d ret %lld\n",
1134 SW_NAME (sw),
1135 live, dead, (((int64_t) dead << 32) / sw->ratio) << sw->info.shift);
1136#endif
1137
1138 return (((int64_t) dead << 32) / sw->ratio) << sw->info.shift;
1139}
1140
1141static void audio_capture_mix_and_clear (HWVoiceOut *hw, int rpos, int samples)
1142{
1143 int n;
1144
1145 if (hw->enabled) {
1146 SWVoiceCap *sc;
1147
1148 for (sc = hw->cap_head.lh_first; sc; sc = sc->entries.le_next) {
1149 SWVoiceOut *sw = &sc->sw;
1150 int rpos2 = rpos;
1151
1152 n = samples;
1153 while (n) {
1154 int till_end_of_hw = hw->samples - rpos2;
1155 int to_write = audio_MIN (till_end_of_hw, n);
1156 int bytes = to_write << hw->info.shift;
1157 int written;
1158
1159 sw->buf = hw->mix_buf + rpos2;
1160 written = audio_pcm_sw_write (sw, NULL, bytes);
1161 if (written - bytes) {
1162 dolog ("Could not mix %d bytes into a capture "
1163 "buffer, mixed %d\n",
1164 bytes, written);
1165 break;
1166 }
1167 n -= to_write;
1168 rpos2 = (rpos2 + to_write) % hw->samples;
1169 }
1170 }
1171 }
1172
1173 n = audio_MIN (samples, hw->samples - rpos);
1174 mixeng_sniff_and_clear (hw, hw->mix_buf + rpos, n);
1175 mixeng_sniff_and_clear (hw, hw->mix_buf, samples - n);
1176}
1177
1178static void audio_run_out (AudioState *s)
1179{
1180 HWVoiceOut *hw = NULL;
1181 SWVoiceOut *sw;
1182
1183 while ((hw = audio_pcm_hw_find_any_enabled_out (s, hw))) {
1184 int played;
1185 int live, free, nb_live, cleanup_required, prev_rpos;
1186
1187 live = audio_pcm_hw_get_live_out2 (hw, &nb_live);
1188 if (!nb_live) {
1189 live = 0;
1190 }
1191
1192 if (audio_bug (AUDIO_FUNC, live < 0 || live > hw->samples)) {
1193 dolog ("live=%d hw->samples=%d\n", live, hw->samples);
1194 continue;
1195 }
1196
1197 if (hw->pending_disable && !nb_live) {
1198 SWVoiceCap *sc;
1199#ifdef DEBUG_OUT
1200 dolog ("Disabling voice\n");
1201#endif
1202 hw->enabled = 0;
1203 hw->pending_disable = 0;
1204 hw->pcm_ops->ctl_out (hw, VOICE_DISABLE);
1205 for (sc = hw->cap_head.lh_first; sc; sc = sc->entries.le_next) {
1206 sc->sw.active = 0;
1207 audio_recalc_and_notify_capture (sc->cap);
1208 }
1209 continue;
1210 }
1211
1212 if (!live) {
1213 for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) {
1214 if (sw->active) {
1215 free = audio_get_free (sw);
1216 if (free > 0) {
1217 sw->callback.fn (sw->callback.opaque, free);
1218 }
1219 }
1220 }
1221 continue;
1222 }
1223
1224 prev_rpos = hw->rpos;
1225 played = hw->pcm_ops->run_out (hw);
1226 if (audio_bug (AUDIO_FUNC, hw->rpos >= hw->samples)) {
1227 dolog ("hw->rpos=%d hw->samples=%d played=%d\n",
1228 hw->rpos, hw->samples, played);
1229 hw->rpos = 0;
1230 }
1231
1232#ifdef DEBUG_OUT
1233 dolog ("played=%d\n", played);
1234#endif
1235
1236 if (played) {
1237 hw->ts_helper += played;
1238 audio_capture_mix_and_clear (hw, prev_rpos, played);
1239 }
1240
1241 cleanup_required = 0;
1242 for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) {
1243 if (!sw->active && sw->empty) {
1244 continue;
1245 }
1246
1247 if (audio_bug (AUDIO_FUNC, played > sw->total_hw_samples_mixed)) {
1248 dolog ("played=%d sw->total_hw_samples_mixed=%d\n",
1249 played, sw->total_hw_samples_mixed);
1250 played = sw->total_hw_samples_mixed;
1251 }
1252
1253 sw->total_hw_samples_mixed -= played;
1254
1255 if (!sw->total_hw_samples_mixed) {
1256 sw->empty = 1;
1257 cleanup_required |= !sw->active && !sw->callback.fn;
1258 }
1259
1260 if (sw->active) {
1261 free = audio_get_free (sw);
1262 if (free > 0) {
1263 sw->callback.fn (sw->callback.opaque, free);
1264 }
1265 }
1266 }
1267
1268 if (cleanup_required) {
1269 SWVoiceOut *sw1;
1270
1271 sw = hw->sw_head.lh_first;
1272 while (sw) {
1273 sw1 = sw->entries.le_next;
1274 if (!sw->active && !sw->callback.fn) {
1275#ifdef DEBUG_PLIVE
1276 dolog ("Finishing with old voice\n");
1277#endif
1278 audio_close_out (s, sw);
1279 }
1280 sw = sw1;
1281 }
1282 }
1283 }
1284}
1285
1286static void audio_run_in (AudioState *s)
1287{
1288 HWVoiceIn *hw = NULL;
1289
1290 while ((hw = audio_pcm_hw_find_any_enabled_in (s, hw))) {
1291 SWVoiceIn *sw;
1292 int captured, min;
1293
1294 captured = hw->pcm_ops->run_in (hw);
1295
1296 min = audio_pcm_hw_find_min_in (hw);
1297 hw->total_samples_captured += captured - min;
1298 hw->ts_helper += captured;
1299
1300 for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) {
1301 sw->total_hw_samples_acquired -= min;
1302
1303 if (sw->active) {
1304 int avail;
1305
1306 avail = audio_get_avail (sw);
1307 if (avail > 0) {
1308 sw->callback.fn (sw->callback.opaque, avail);
1309 }
1310 }
1311 }
1312 }
1313}
1314
1315static void audio_run_capture (AudioState *s)
1316{
1317 CaptureVoiceOut *cap;
1318
1319 for (cap = s->cap_head.lh_first; cap; cap = cap->entries.le_next) {
1320 int live, rpos, captured;
1321 HWVoiceOut *hw = &cap->hw;
1322 SWVoiceOut *sw;
1323
1324 captured = live = audio_pcm_hw_get_live_out (hw);
1325 rpos = hw->rpos;
1326 while (live) {
1327 int left = hw->samples - rpos;
1328 int to_capture = audio_MIN (live, left);
1329 st_sample_t *src;
1330 struct capture_callback *cb;
1331
1332 src = hw->mix_buf + rpos;
1333 hw->clip (cap->buf, src, to_capture);
1334 mixeng_sniff_and_clear (hw, src, to_capture);
1335
1336 for (cb = cap->cb_head.lh_first; cb; cb = cb->entries.le_next) {
1337 cb->ops.capture (cb->opaque, cap->buf,
1338 to_capture << hw->info.shift);
1339 }
1340 rpos = (rpos + to_capture) % hw->samples;
1341 live -= to_capture;
1342 }
1343 hw->rpos = rpos;
1344
1345 for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) {
1346 if (!sw->active && sw->empty) {
1347 continue;
1348 }
1349
1350 if (audio_bug (AUDIO_FUNC, captured > sw->total_hw_samples_mixed)) {
1351 dolog ("captured=%d sw->total_hw_samples_mixed=%d\n",
1352 captured, sw->total_hw_samples_mixed);
1353 captured = sw->total_hw_samples_mixed;
1354 }
1355
1356 sw->total_hw_samples_mixed -= captured;
1357 sw->empty = sw->total_hw_samples_mixed == 0;
1358 }
1359 }
1360}
1361
1362static void audio_timer (void *opaque)
1363{
1364 AudioState *s = opaque;
1365
1366 audio_run_out (s);
1367 audio_run_in (s);
1368 audio_run_capture (s);
1369
1370 TMTimerSet (s->ts, TMTimerGet (s->ts) + conf.period.ticks);
1371}
1372
1373static struct audio_option audio_options[] = {
1374 /* DAC */
1375 {"DAC_FIXED_SETTINGS", AUD_OPT_BOOL, &conf.fixed_out.enabled,
1376 "Use fixed settings for host DAC", NULL, 0},
1377
1378 {"DAC_FIXED_FREQ", AUD_OPT_INT, &conf.fixed_out.settings.freq,
1379 "Frequency for fixed host DAC", NULL, 0},
1380
1381 {"DAC_FIXED_FMT", AUD_OPT_FMT, &conf.fixed_out.settings.fmt,
1382 "Format for fixed host DAC", NULL, 0},
1383
1384 {"DAC_FIXED_CHANNELS", AUD_OPT_INT, &conf.fixed_out.settings.nchannels,
1385 "Number of channels for fixed DAC (1 - mono, 2 - stereo)", NULL, 0},
1386
1387 {"DAC_VOICES", AUD_OPT_INT, &conf.fixed_out.nb_voices,
1388 "Number of voices for DAC", NULL, 0},
1389
1390 /* ADC */
1391 {"ADC_FIXED_SETTINGS", AUD_OPT_BOOL, &conf.fixed_in.enabled,
1392 "Use fixed settings for host ADC", NULL, 0},
1393
1394 {"ADC_FIXED_FREQ", AUD_OPT_INT, &conf.fixed_in.settings.freq,
1395 "Frequency for fixed host ADC", NULL, 0},
1396
1397 {"ADC_FIXED_FMT", AUD_OPT_FMT, &conf.fixed_in.settings.fmt,
1398 "Format for fixed host ADC", NULL, 0},
1399
1400 {"ADC_FIXED_CHANNELS", AUD_OPT_INT, &conf.fixed_in.settings.nchannels,
1401 "Number of channels for fixed ADC (1 - mono, 2 - stereo)", NULL, 0},
1402
1403 {"ADC_VOICES", AUD_OPT_INT, &conf.fixed_in.nb_voices,
1404 "Number of voices for ADC", NULL, 0},
1405
1406 /* Misc */
1407 {"TIMER_PERIOD", AUD_OPT_INT, &conf.period.hz,
1408 "Timer period in HZ (0 - use lowest possible)", NULL, 0},
1409
1410 {"PLIVE", AUD_OPT_BOOL, &conf.plive,
1411 "(undocumented)", NULL, 0},
1412
1413 {NULL, 0, NULL, NULL, NULL, 0}
1414};
1415
1416static int audio_driver_init (AudioState *s, struct audio_driver *drv)
1417{
1418 if (drv->options) {
1419 audio_process_options (drv->name, drv->options);
1420 }
1421 s->drv_opaque = drv->init ();
1422
1423 if (s->drv_opaque) {
1424 audio_init_nb_voices_out (s, drv);
1425 audio_init_nb_voices_in (s, drv);
1426 s->drv = drv;
1427 return 0;
1428 }
1429 else {
1430 dolog ("Could not init `%s' audio driver\n", drv->name);
1431 return -1;
1432 }
1433}
1434
1435static void audio_vm_change_state_handler (void *opaque, int running)
1436{
1437 AudioState *s = opaque;
1438 HWVoiceOut *hwo = NULL;
1439 HWVoiceIn *hwi = NULL;
1440 int op = running ? VOICE_ENABLE : VOICE_DISABLE;
1441
1442 while ((hwo = audio_pcm_hw_find_any_enabled_out (s, hwo))) {
1443 hwo->pcm_ops->ctl_out (hwo, op);
1444 }
1445
1446 while ((hwi = audio_pcm_hw_find_any_enabled_in (s, hwi))) {
1447 hwi->pcm_ops->ctl_in (hwi, op);
1448 }
1449}
1450
1451static void audio_atexit (void)
1452{
1453 AudioState *s = &glob_audio_state;
1454 HWVoiceOut *hwo = NULL;
1455 HWVoiceIn *hwi = NULL;
1456
1457 while ((hwo = audio_pcm_hw_find_any_enabled_out (s, hwo))) {
1458 SWVoiceCap *sc;
1459
1460 hwo->pcm_ops->ctl_out (hwo, VOICE_DISABLE);
1461 hwo->pcm_ops->fini_out (hwo);
1462
1463 for (sc = hwo->cap_head.lh_first; sc; sc = sc->entries.le_next) {
1464 CaptureVoiceOut *cap = sc->cap;
1465 struct capture_callback *cb;
1466
1467 for (cb = cap->cb_head.lh_first; cb; cb = cb->entries.le_next) {
1468 cb->ops.destroy (cb->opaque);
1469 }
1470 }
1471 }
1472
1473 while ((hwi = audio_pcm_hw_find_any_enabled_in (s, hwi))) {
1474 hwi->pcm_ops->ctl_in (hwi, VOICE_DISABLE);
1475 hwi->pcm_ops->fini_in (hwi);
1476 }
1477
1478 if (s->drv) {
1479 s->drv->fini (s->drv_opaque);
1480 }
1481}
1482
1483void AUD_register_card (const char *name, QEMUSoundCard *card)
1484{
1485 AudioState *s = &glob_audio_state;
1486 card->audio = s;
1487 card->name = qemu_strdup (name);
1488 memset (&card->entries, 0, sizeof (card->entries));
1489 LIST_INSERT_HEAD (&s->card_head, card, entries);
1490}
1491
1492void AUD_remove_card (QEMUSoundCard *card)
1493{
1494 LIST_REMOVE (card, entries);
1495 card->audio = NULL;
1496 qemu_free (card->name);
1497}
1498
1499static void audio_timer_helper (PPDMDRVINS pDrvIns, PTMTIMER pTimer)
1500{
1501 AudioState *s = &glob_audio_state;
1502 audio_timer (s);
1503}
1504
1505static int AUD_init (PPDMDRVINS pDrvIns, const char *drvname)
1506{
1507 size_t i;
1508 int done = 0;
1509 AudioState *s = &glob_audio_state;
1510 int rc;
1511
1512 LIST_INIT (&s->hw_head_out);
1513 LIST_INIT (&s->hw_head_in);
1514 LIST_INIT (&s->cap_head);
1515
1516 rc = pDrvIns->pDrvHlp->pfnTMTimerCreate (pDrvIns, TMCLOCK_VIRTUAL,
1517 audio_timer_helper, "Audio timer", &s->ts);
1518 if (VBOX_FAILURE (rc))
1519 return rc;
1520
1521 audio_process_options ("AUDIO", audio_options);
1522
1523 s->nb_hw_voices_out = conf.fixed_out.nb_voices;
1524 s->nb_hw_voices_in = conf.fixed_in.nb_voices;
1525
1526 if (s->nb_hw_voices_out <= 0) {
1527 dolog ("Bogus number of playback voices %d, setting to 1\n",
1528 s->nb_hw_voices_out);
1529 s->nb_hw_voices_out = 1;
1530 }
1531
1532 if (s->nb_hw_voices_in <= 0) {
1533 dolog ("Bogus number of capture voices %d, setting to 0\n",
1534 s->nb_hw_voices_in);
1535 s->nb_hw_voices_in = 0;
1536 }
1537
1538 LogRel(("Audio: Trying driver '%s'.\n", drvname));
1539
1540 if (drvname) {
1541 int found = 0;
1542
1543 for (i = 0; i < sizeof (drvtab) / sizeof (drvtab[0]); i++) {
1544 if (!strcmp (drvname, drvtab[i]->name)) {
1545 done = !audio_driver_init (s, drvtab[i]);
1546 found = 1;
1547 break;
1548 }
1549 }
1550
1551 if (!found) {
1552 dolog ("Unknown audio driver `%s'\n", drvname);
1553 }
1554 }
1555
1556 if (!done) {
1557 for (i = 0; !done && i < sizeof (drvtab) / sizeof (drvtab[0]); i++) {
1558 if (drvtab[i]->can_be_default) {
1559 LogRel(("Audio: Initialization of driver '%s' failed, trying '%s'.\n",
1560 drvname, drvtab[i]->name));
1561 drvname = drvtab[i]->name;
1562 done = !audio_driver_init (s, drvtab[i]);
1563 }
1564 }
1565 }
1566
1567 if (!done) {
1568 done = !audio_driver_init (s, &no_audio_driver);
1569 if (!done) {
1570 dolog ("Could not initialize audio subsystem\n");
1571 }
1572 else {
1573 LogRel(("Audio: Initialization of driver '%s' failed, using NULL driver.\n", drvname));
1574 dolog ("warning: Using timer based audio emulation\n");
1575 }
1576 }
1577
1578 if (done) {
1579 if (conf.period.hz <= 0) {
1580 if (conf.period.hz < 0) {
1581 dolog ("warning: Timer period is negative - %d "
1582 "treating as zero\n",
1583 conf.period.hz);
1584 }
1585 conf.period.ticks = 1;
1586 }
1587 else {
1588 conf.period.ticks = pDrvIns->pDrvHlp->pfnTMGetVirtualFreq (pDrvIns)
1589 / conf.period.hz;
1590 }
1591 }
1592 else {
1593 /* XXX */
1594 rc = TMTimerDestroy (s->ts);
1595 return rc;
1596 }
1597
1598 LIST_INIT (&s->card_head);
1599 TMTimerSet (s->ts, TMTimerGet (s->ts) + conf.period.ticks);
1600 return VINF_SUCCESS;
1601}
1602
1603CaptureVoiceOut *AUD_add_capture (
1604 AudioState *s,
1605 audsettings_t *as,
1606 struct audio_capture_ops *ops,
1607 void *cb_opaque
1608 )
1609{
1610 CaptureVoiceOut *cap;
1611 struct capture_callback *cb;
1612
1613 if (!s) {
1614 /* XXX suppress */
1615 s = &glob_audio_state;
1616 }
1617
1618 if (audio_validate_settings (as)) {
1619 dolog ("Invalid settings were passed when trying to add capture\n");
1620 audio_print_settings (as);
1621 goto err0;
1622 }
1623
1624 cb = audio_calloc (AUDIO_FUNC, 1, sizeof (*cb));
1625 if (!cb) {
1626 dolog ("Could not allocate capture callback information, size %u\n",
1627 sizeof (*cb));
1628 goto err0;
1629 }
1630 cb->ops = *ops;
1631 cb->opaque = cb_opaque;
1632
1633 cap = audio_pcm_capture_find_specific (s, as);
1634 if (cap) {
1635 LIST_INSERT_HEAD (&cap->cb_head, cb, entries);
1636 return cap;
1637 }
1638 else {
1639 HWVoiceOut *hw;
1640 CaptureVoiceOut *cap;
1641
1642 cap = audio_calloc (AUDIO_FUNC, 1, sizeof (*cap));
1643 if (!cap) {
1644 dolog ("Could not allocate capture voice, size %u\n",
1645 sizeof (*cap));
1646 goto err1;
1647 }
1648
1649 hw = &cap->hw;
1650 LIST_INIT (&hw->sw_head);
1651 LIST_INIT (&cap->cb_head);
1652
1653 /* XXX find a more elegant way */
1654 hw->samples = 4096 * 4;
1655 hw->mix_buf = audio_calloc (AUDIO_FUNC, hw->samples,
1656 sizeof (st_sample_t));
1657 if (!hw->mix_buf) {
1658 dolog ("Could not allocate capture mix buffer (%d samples)\n",
1659 hw->samples);
1660 goto err2;
1661 }
1662
1663 audio_pcm_init_info (&hw->info, as);
1664
1665 cap->buf = audio_calloc (AUDIO_FUNC, hw->samples, 1 << hw->info.shift);
1666 if (!cap->buf) {
1667 dolog ("Could not allocate capture buffer "
1668 "(%d samples, each %d bytes)\n",
1669 hw->samples, 1 << hw->info.shift);
1670 goto err3;
1671 }
1672
1673 hw->clip = mixeng_clip
1674 [hw->info.nchannels == 2]
1675 [hw->info.sign]
1676 [hw->info.swap_endianness]
1677 [hw->info.bits == 16];
1678
1679 LIST_INSERT_HEAD (&s->cap_head, cap, entries);
1680 LIST_INSERT_HEAD (&cap->cb_head, cb, entries);
1681
1682 hw = NULL;
1683 while ((hw = audio_pcm_hw_find_any_out (s, hw))) {
1684 audio_attach_capture (s, hw);
1685 }
1686 return cap;
1687
1688 err3:
1689 qemu_free (cap->hw.mix_buf);
1690 err2:
1691 qemu_free (cap);
1692 err1:
1693 qemu_free (cb);
1694 err0:
1695 return NULL;
1696 }
1697}
1698
1699void AUD_del_capture (CaptureVoiceOut *cap, void *cb_opaque)
1700{
1701 struct capture_callback *cb;
1702
1703 for (cb = cap->cb_head.lh_first; cb; cb = cb->entries.le_next) {
1704 if (cb->opaque == cb_opaque) {
1705 cb->ops.destroy (cb_opaque);
1706 LIST_REMOVE (cb, entries);
1707 qemu_free (cb);
1708
1709 if (!cap->cb_head.lh_first) {
1710 SWVoiceOut *sw = cap->hw.sw_head.lh_first, *sw1;
1711
1712 while (sw) {
1713 SWVoiceCap *sc = (SWVoiceCap *) sw;
1714#ifdef DEBUG_CAPTURE
1715 dolog ("freeing %s\n", sw->name);
1716#endif
1717
1718 sw1 = sw->entries.le_next;
1719 if (sw->rate) {
1720 st_rate_stop (sw->rate);
1721 sw->rate = NULL;
1722 }
1723 LIST_REMOVE (sw, entries);
1724 LIST_REMOVE (sc, entries);
1725 qemu_free (sc);
1726 sw = sw1;
1727 }
1728 LIST_REMOVE (cap, entries);
1729 qemu_free (cap);
1730 }
1731 return;
1732 }
1733 }
1734}
1735
1736void AUD_set_volume_out (SWVoiceOut *sw, int mute, uint8_t lvol, uint8_t rvol)
1737{
1738 if (sw)
1739 {
1740 sw->vol.mute = mute;
1741 sw->vol.l = (uint32_t)lvol * 0x808080; /* maximum is INT_MAX = 0x7fffffff */
1742 sw->vol.r = (uint32_t)rvol * 0x808080; /* maximum is INT_MAX = 0x7fffffff */
1743 }
1744}
1745
1746void AUD_set_volume (audmixerctl_t mt, int *mute, uint8_t *lvol, uint8_t *rvol)
1747{
1748 volume_t *vol = NULL;
1749 const char *name;
1750
1751 switch (mt)
1752 {
1753 case AUD_MIXER_VOLUME:
1754 name = "MASTER";
1755 vol = &pcm_out_volume;
1756 break;
1757 case AUD_MIXER_PCM:
1758 name = "PCM_OUT";
1759 break;
1760 case AUD_MIXER_LINE_IN:
1761 name = "LINE_IN";
1762 vol = &pcm_in_volume;
1763 break;
1764 default:
1765 return;
1766
1767 }
1768
1769 if (vol)
1770 {
1771 vol->mute = *mute;
1772 vol->l = ((uint32_t)*lvol) * 0x808080; /* maximum is INT_MAX = 0x7fffffff */
1773 vol->r = ((uint32_t)*rvol) * 0x808080; /* maximum is INT_MAX = 0x7fffffff */
1774 }
1775#if 0
1776 LogRel(("AUDIO: Set '%s' volume to %d%%/%d%%\n", name, (*lvol*100)/255, (*rvol*100)/255l));
1777#endif
1778}
1779
1780void AUD_set_record_source (audrecsource_t *ars, audrecsource_t *als)
1781{
1782 LogRel(("Audio: set_record_source ars=%d als=%d (not implemented)\n", *ars, *als));
1783}
1784
1785/**
1786 * Queries an interface to the driver.
1787 *
1788 * @returns Pointer to interface.
1789 * @returns NULL if the interface was not supported by the driver.
1790 * @param pInterface Pointer to this interface structure.
1791 * @param enmInterface The requested interface identification.
1792 * @thread Any thread.
1793 */
1794static DECLCALLBACK(void *) drvAudioQueryInterface(PPDMIBASE pInterface,
1795 PDMINTERFACE enmInterface)
1796{
1797 PPDMDRVINS pDrvIns = PDMIBASE_2_PDMDRV(pInterface);
1798 PDRVAUDIO pData = PDMINS2DATA(pDrvIns, PDRVAUDIO);
1799 switch (enmInterface)
1800 {
1801 case PDMINTERFACE_BASE:
1802 return &pDrvIns->IBase;
1803 case PDMINTERFACE_AUDIO_CONNECTOR:
1804 return &pData->IAudioConnector;
1805 default:
1806 return NULL;
1807 }
1808}
1809
1810/**
1811 * Power Off notification.
1812 *
1813 * @param pDrvIns The driver instance data.
1814 */
1815static DECLCALLBACK(void) drvAudioPowerOff(PPDMDRVINS pDrvIns)
1816{
1817 AudioState *s = &glob_audio_state;
1818 audio_vm_change_state_handler (s, 0);
1819}
1820
1821/**
1822 * Destruct a driver instance.
1823 *
1824 * Most VM resources are freed by the VM. This callback is provided so that any non-VM
1825 * resources can be freed correctly.
1826 *
1827 * @param pDrvIns The driver instance data.
1828 */
1829static DECLCALLBACK(void) drvAudioDestruct(PPDMDRVINS pDrvIns)
1830{
1831 LogFlow(("drvAUDIODestruct:\n"));
1832
1833 audio_atexit ();
1834}
1835
1836/**
1837 * Construct an AUDIO driver instance.
1838 *
1839 * @returns VBox status.
1840 * @param pDrvIns The driver instance data.
1841 * If the registration structure is needed, pDrvIns->pDrvReg points to it.
1842 * @param pCfgHandle Configuration node handle for the driver. Use this to obtain the configuration
1843 * of the driver instance. It's also found in pDrvIns->pCfgHandle, but like
1844 * iInstance it's expected to be used a bit in this function.
1845 */
1846static DECLCALLBACK(int) drvAudioConstruct(PPDMDRVINS pDrvIns, PCFGMNODE pCfgHandle)
1847{
1848 int rc;
1849 PDRVAUDIO pData = PDMINS2DATA(pDrvIns, PDRVAUDIO);
1850 char *drvname;
1851
1852 LogFlow(("drvAUDIOConstruct:\n"));
1853 /*
1854 * Validate the config.
1855 */
1856 if (!CFGMR3AreValuesValid(pCfgHandle, "AudioDriver\0"))
1857 return VERR_PDM_DRVINS_UNKNOWN_CFG_VALUES;
1858
1859 /*
1860 * Init the static parts.
1861 */
1862 pData->pDrvIns = pDrvIns;
1863 /* IBase */
1864 pDrvIns->IBase.pfnQueryInterface = drvAudioQueryInterface;
1865 /* IAudio */
1866 /* pData->IAudioConnector.pfn; */
1867
1868 glob_audio_state.pDrvIns = pDrvIns;
1869
1870 rc = CFGMR3QueryStringAlloc (pCfgHandle, "AudioDriver", &drvname);
1871 if (VBOX_FAILURE (rc))
1872 return rc;
1873
1874 rc = AUD_init (pDrvIns, drvname);
1875 if (VBOX_FAILURE (rc))
1876 return rc;
1877
1878 MMR3HeapFree (drvname);
1879
1880 return VINF_SUCCESS;
1881}
1882
1883/**
1884 * Suspend notification.
1885 *
1886 * @returns VBox status.
1887 * @param pDrvIns The driver instance data.
1888 */
1889static DECLCALLBACK(void) drvAudioSuspend(PPDMDRVINS pDrvIns)
1890{
1891 AudioState *s = &glob_audio_state;
1892 audio_vm_change_state_handler (s, 0);
1893}
1894
1895/**
1896 * Resume notification.
1897 *
1898 * @returns VBox status.
1899 * @param pDrvIns The driver instance data.
1900 */
1901static DECLCALLBACK(void) audioResume(PPDMDRVINS pDrvIns)
1902{
1903 AudioState *s = &glob_audio_state;
1904 audio_vm_change_state_handler (s, 1);
1905}
1906
1907/**
1908 * Audio driver registration record.
1909 */
1910const PDMDRVREG g_DrvAUDIO =
1911{
1912 /* u32Version */
1913 PDM_DRVREG_VERSION,
1914 /* szDriverName */
1915 "AUDIO",
1916 /* pszDescription */
1917 "AUDIO Driver",
1918 /* fFlags */
1919 PDM_DRVREG_FLAGS_HOST_BITS_DEFAULT,
1920 /* fClass. */
1921 PDM_DRVREG_CLASS_AUDIO,
1922 /* cMaxInstances */
1923 1,
1924 /* cbInstance */
1925 sizeof(DRVAUDIO),
1926 /* pfnConstruct */
1927 drvAudioConstruct,
1928 /* pfnDestruct */
1929 drvAudioDestruct,
1930 /* pfnIOCtl */
1931 NULL,
1932 /* pfnPowerOn */
1933 NULL,
1934 /* pfnReset */
1935 NULL,
1936 /* pfnSuspend */
1937 drvAudioSuspend,
1938 /* pfnResume */
1939 audioResume,
1940 /* pfnDetach */
1941 NULL,
1942 /* pfnPowerOff */
1943 drvAudioPowerOff
1944};
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