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source: vbox/trunk/src/VBox/Devices/Audio/audio.c@ 5608

最後變更 在這個檔案從5608是 5076,由 vboxsync 提交於 17 年 前

Reverted the changes to load the ALSA code dynamically...
  • 屬性 svn:eol-style 設為 native
  • 屬性 svn:keywords 設為 Author Date Id Revision
檔案大小: 48.3 KB
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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 RT_OS_WINDOWS
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 RT_OS_LINUX
66 &oss_audio_driver,
67#ifdef VBOX_WITH_ALSA
68 &alsa_audio_driver,
69#endif
70#endif
71#ifdef RT_OS_DARWIN
72 &coreaudio_audio_driver,
73#endif
74#ifdef RT_OS_WINDOWS
75 &dsound_audio_driver,
76#endif
77#ifdef RT_OS_L4
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 va)
340{
341 va_list va2;
342 va_copy (va2, va); /* Have to make a copy here or GCC will break. */
343 if (cap) {
344 Log (("%s: %N", cap, fmt, &va2));
345 }
346 else {
347 Log (("%N", fmt, &va2));
348 }
349 va_end (va2);
350}
351
352void AUD_log (const char *cap, const char *fmt, ...)
353{
354 va_list va;
355
356 va_start (va, fmt);
357 AUD_vlog (cap, fmt, va);
358 va_end (va);
359}
360
361static void audio_process_options (const char *prefix,
362 struct audio_option *opt)
363{
364 char *optname;
365 const char vbox_prefix[] = "VBOX_";
366 size_t preflen;
367
368 if (audio_bug (AUDIO_FUNC, !prefix)) {
369 dolog ("prefix = NULL\n");
370 return;
371 }
372
373 if (audio_bug (AUDIO_FUNC, !opt)) {
374 dolog ("opt = NULL\n");
375 return;
376 }
377
378 preflen = strlen (prefix);
379
380 for (; opt->name; opt++) {
381 size_t len, i;
382 int def;
383
384 if (!opt->valp) {
385 dolog ("Option value pointer for `%s' is not set\n",
386 opt->name);
387 continue;
388 }
389
390 len = strlen (opt->name);
391 /* len of opt->name + len of prefix + size of vbox_prefix
392 * (includes trailing zero) + zero + underscore (on behalf of
393 * sizeof) */
394 optname = qemu_malloc (len + preflen + sizeof (vbox_prefix) + 1);
395 if (!optname) {
396 dolog ("Could not allocate memory for option name `%s'\n",
397 opt->name);
398 continue;
399 }
400
401 strcpy (optname, vbox_prefix);
402
403 /* copy while upcasing, including trailing zero */
404 for (i = 0; i <= preflen; ++i) {
405 optname[i + sizeof (vbox_prefix) - 1] = toupper (prefix[i]);
406 }
407 strcat (optname, "_");
408 strcat (optname, opt->name);
409
410 def = 1;
411 switch (opt->tag) {
412 case AUD_OPT_BOOL:
413 case AUD_OPT_INT:
414 {
415 int *intp = opt->valp;
416 *intp = audio_get_conf_int (optname, *intp, &def);
417 }
418 break;
419
420 case AUD_OPT_FMT:
421 {
422 audfmt_e *fmtp = opt->valp;
423 *fmtp = audio_get_conf_fmt (optname, *fmtp, &def);
424 }
425 break;
426
427 case AUD_OPT_STR:
428 {
429 const char **strp = opt->valp;
430 *strp = audio_get_conf_str (optname, *strp, &def);
431 }
432 break;
433
434 default:
435 dolog ("Bad value tag for option `%s' - %d\n",
436 optname, opt->tag);
437 break;
438 }
439
440 if (!opt->overridenp) {
441 opt->overridenp = &opt->overriden;
442 }
443 *opt->overridenp = !def;
444 qemu_free (optname);
445 }
446}
447
448static void audio_print_settings (audsettings_t *as)
449{
450 dolog ("frequency=%d nchannels=%d fmt=", as->freq, as->nchannels);
451
452 switch (as->fmt) {
453 case AUD_FMT_S8:
454 AUD_log (NULL, "S8");
455 break;
456 case AUD_FMT_U8:
457 AUD_log (NULL, "U8");
458 break;
459 case AUD_FMT_S16:
460 AUD_log (NULL, "S16");
461 break;
462 case AUD_FMT_U16:
463 AUD_log (NULL, "U16");
464 break;
465 default:
466 AUD_log (NULL, "invalid(%d)", as->fmt);
467 break;
468 }
469
470 AUD_log (NULL, " endianness=");
471 switch (as->endianness) {
472 case 0:
473 AUD_log (NULL, "little");
474 break;
475 case 1:
476 AUD_log (NULL, "big");
477 break;
478 default:
479 AUD_log (NULL, "invalid");
480 break;
481 }
482 AUD_log (NULL, "\n");
483}
484
485static int audio_validate_settings (audsettings_t *as)
486{
487 int invalid;
488
489 invalid = as->nchannels != 1 && as->nchannels != 2;
490 invalid |= as->endianness != 0 && as->endianness != 1;
491
492 switch (as->fmt) {
493 case AUD_FMT_S8:
494 case AUD_FMT_U8:
495 case AUD_FMT_S16:
496 case AUD_FMT_U16:
497 break;
498 default:
499 invalid = 1;
500 break;
501 }
502
503 invalid |= as->freq <= 0;
504 return invalid ? -1 : 0;
505}
506
507static int audio_pcm_info_eq (struct audio_pcm_info *info, audsettings_t *as)
508{
509 int bits = 8, sign = 0;
510
511 switch (as->fmt) {
512 case AUD_FMT_S8:
513 sign = 1;
514 case AUD_FMT_U8:
515 break;
516
517 case AUD_FMT_S16:
518 sign = 1;
519 case AUD_FMT_U16:
520 bits = 16;
521 break;
522 }
523 return info->freq == as->freq
524 && info->nchannels == as->nchannels
525 && info->sign == sign
526 && info->bits == bits
527 && info->swap_endianness == (as->endianness != AUDIO_HOST_ENDIANNESS);
528}
529
530void audio_pcm_init_info (struct audio_pcm_info *info, audsettings_t *as)
531{
532 int bits = 8, sign = 0;
533
534 switch (as->fmt) {
535 case AUD_FMT_S8:
536 sign = 1;
537 case AUD_FMT_U8:
538 break;
539
540 case AUD_FMT_S16:
541 sign = 1;
542 case AUD_FMT_U16:
543 bits = 16;
544 break;
545 }
546
547 info->freq = as->freq;
548 info->bits = bits;
549 info->sign = sign;
550 info->nchannels = as->nchannels;
551 info->shift = (as->nchannels == 2) + (bits == 16);
552 info->align = (1 << info->shift) - 1;
553 info->bytes_per_second = info->freq << info->shift;
554 info->swap_endianness = (as->endianness != AUDIO_HOST_ENDIANNESS);
555}
556
557void audio_pcm_info_clear_buf (struct audio_pcm_info *info, void *buf, int len)
558{
559 if (!len) {
560 return;
561 }
562
563 if (info->sign) {
564 memset (buf, 0x00, len << info->shift);
565 }
566 else {
567 if (info->bits == 8) {
568 memset (buf, 0x80, len << info->shift);
569 }
570 else {
571 int i;
572 uint16_t *p = buf;
573 int shift = info->nchannels - 1;
574 short s = INT16_MAX;
575
576 if (info->swap_endianness) {
577 s = bswap16 (s);
578 }
579
580 for (i = 0; i < len << shift; i++) {
581 p[i] = s;
582 }
583 }
584 }
585}
586
587/*
588 * Capture
589 */
590static void noop_conv (st_sample_t *dst, const void *src,
591 int samples, volume_t *vol)
592{
593 (void) src;
594 (void) dst;
595 (void) samples;
596 (void) vol;
597}
598
599static CaptureVoiceOut *audio_pcm_capture_find_specific (
600 AudioState *s,
601 audsettings_t *as
602 )
603{
604 CaptureVoiceOut *cap;
605
606 for (cap = s->cap_head.lh_first; cap; cap = cap->entries.le_next) {
607 if (audio_pcm_info_eq (&cap->hw.info, as)) {
608 return cap;
609 }
610 }
611 return NULL;
612}
613
614static void audio_notify_capture (CaptureVoiceOut *cap, audcnotification_e cmd)
615{
616 struct capture_callback *cb;
617
618#ifdef DEBUG_CAPTURE
619 dolog ("notification %d sent\n", cmd);
620#endif
621 for (cb = cap->cb_head.lh_first; cb; cb = cb->entries.le_next) {
622 cb->ops.notify (cb->opaque, cmd);
623 }
624}
625
626static void audio_capture_maybe_changed (CaptureVoiceOut *cap, int enabled)
627{
628 if (cap->hw.enabled != enabled) {
629 audcnotification_e cmd;
630 cap->hw.enabled = enabled;
631 cmd = enabled ? AUD_CNOTIFY_ENABLE : AUD_CNOTIFY_DISABLE;
632 audio_notify_capture (cap, cmd);
633 }
634}
635
636static void audio_recalc_and_notify_capture (CaptureVoiceOut *cap)
637{
638 HWVoiceOut *hw = &cap->hw;
639 SWVoiceOut *sw;
640 int enabled = 0;
641
642 for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) {
643 if (sw->active) {
644 enabled = 1;
645 break;
646 }
647 }
648 audio_capture_maybe_changed (cap, enabled);
649}
650
651static void audio_detach_capture (HWVoiceOut *hw)
652{
653 SWVoiceCap *sc = hw->cap_head.lh_first;
654
655 while (sc) {
656 SWVoiceCap *sc1 = sc->entries.le_next;
657 SWVoiceOut *sw = &sc->sw;
658 CaptureVoiceOut *cap = sc->cap;
659 int was_active = sw->active;
660
661 if (sw->rate) {
662 st_rate_stop (sw->rate);
663 sw->rate = NULL;
664 }
665
666 LIST_REMOVE (sw, entries);
667 LIST_REMOVE (sc, entries);
668 qemu_free (sc);
669 if (was_active) {
670 /* We have removed soft voice from the capture:
671 this might have changed the overall status of the capture
672 since this might have been the only active voice */
673 audio_recalc_and_notify_capture (cap);
674 }
675 sc = sc1;
676 }
677}
678
679static int audio_attach_capture (AudioState *s, HWVoiceOut *hw)
680{
681 CaptureVoiceOut *cap;
682
683 audio_detach_capture (hw);
684 for (cap = s->cap_head.lh_first; cap; cap = cap->entries.le_next) {
685 SWVoiceCap *sc;
686 SWVoiceOut *sw;
687 HWVoiceOut *hw_cap = &cap->hw;
688
689 sc = audio_calloc (AUDIO_FUNC, 1, sizeof (*sc));
690 if (!sc) {
691 dolog ("Could not allocate soft capture voice (%u bytes)\n",
692 sizeof (*sc));
693 return -1;
694 }
695
696 sc->cap = cap;
697 sw = &sc->sw;
698 sw->hw = hw_cap;
699 sw->info = hw->info;
700 sw->empty = 1;
701 sw->active = hw->enabled;
702 sw->conv = noop_conv;
703 sw->ratio = ((int64_t) hw_cap->info.freq << 32) / sw->info.freq;
704 sw->rate = st_rate_start (sw->info.freq, hw_cap->info.freq);
705 if (!sw->rate) {
706 dolog ("Could not start rate conversion for `%s'\n", SW_NAME (sw));
707 qemu_free (sw);
708 return -1;
709 }
710 LIST_INSERT_HEAD (&hw_cap->sw_head, sw, entries);
711 LIST_INSERT_HEAD (&hw->cap_head, sc, entries);
712#ifdef DEBUG_CAPTURE
713 asprintf (&sw->name, "for %p %d,%d,%d",
714 hw, sw->info.freq, sw->info.bits, sw->info.nchannels);
715 dolog ("Added %s active = %d\n", sw->name, sw->active);
716#endif
717 if (sw->active) {
718 audio_capture_maybe_changed (cap, 1);
719 }
720 }
721 return 0;
722}
723
724/*
725 * Hard voice (capture)
726 */
727static int audio_pcm_hw_find_min_in (HWVoiceIn *hw)
728{
729 SWVoiceIn *sw;
730 int m = hw->total_samples_captured;
731
732 for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) {
733 if (sw->active) {
734 m = audio_MIN (m, sw->total_hw_samples_acquired);
735 }
736 }
737 return m;
738}
739
740int audio_pcm_hw_get_live_in (HWVoiceIn *hw)
741{
742 int live = hw->total_samples_captured - audio_pcm_hw_find_min_in (hw);
743 if (audio_bug (AUDIO_FUNC, live < 0 || live > hw->samples)) {
744 dolog ("live=%d hw->samples=%d\n", live, hw->samples);
745 return 0;
746 }
747 return live;
748}
749
750/*
751 * Soft voice (capture)
752 */
753static int audio_pcm_sw_get_rpos_in (SWVoiceIn *sw)
754{
755 HWVoiceIn *hw = sw->hw;
756 int live = hw->total_samples_captured - sw->total_hw_samples_acquired;
757 int rpos;
758
759 if (audio_bug (AUDIO_FUNC, live < 0 || live > hw->samples)) {
760 dolog ("live=%d hw->samples=%d\n", live, hw->samples);
761 return 0;
762 }
763
764 rpos = hw->wpos - live;
765 if (rpos >= 0) {
766 return rpos;
767 }
768 else {
769 return hw->samples + rpos;
770 }
771}
772
773int audio_pcm_sw_read (SWVoiceIn *sw, void *buf, int size)
774{
775 HWVoiceIn *hw = sw->hw;
776 int samples, live, ret = 0, swlim, isamp, osamp, rpos, total = 0;
777 st_sample_t *src, *dst = sw->buf;
778
779 rpos = audio_pcm_sw_get_rpos_in (sw) % hw->samples;
780
781 live = hw->total_samples_captured - sw->total_hw_samples_acquired;
782 if (audio_bug (AUDIO_FUNC, live < 0 || live > hw->samples)) {
783 dolog ("live_in=%d hw->samples=%d\n", live, hw->samples);
784 return 0;
785 }
786
787 samples = size >> sw->info.shift;
788 if (!live) {
789 return 0;
790 }
791
792 swlim = (live * sw->ratio) >> 32;
793 swlim = audio_MIN (swlim, samples);
794
795 while (swlim) {
796 src = hw->conv_buf + rpos;
797 isamp = hw->wpos - rpos;
798 /* XXX: <= ? */
799 if (isamp <= 0) {
800 isamp = hw->samples - rpos;
801 }
802
803 if (!isamp) {
804 break;
805 }
806 osamp = swlim;
807
808 if (audio_bug (AUDIO_FUNC, osamp < 0)) {
809 dolog ("osamp=%d\n", osamp);
810 return 0;
811 }
812
813 st_rate_flow (sw->rate, src, dst, &isamp, &osamp);
814 swlim -= osamp;
815 rpos = (rpos + isamp) % hw->samples;
816 dst += osamp;
817 ret += osamp;
818 total += isamp;
819 }
820
821 sw->clip (buf, sw->buf, ret);
822 sw->total_hw_samples_acquired += total;
823 return ret << sw->info.shift;
824}
825
826/*
827 * Hard voice (playback)
828 */
829static int audio_pcm_hw_find_min_out (HWVoiceOut *hw, int *nb_livep)
830{
831 SWVoiceOut *sw;
832 int m = INT_MAX;
833 int nb_live = 0;
834
835 for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) {
836 if (sw->active || !sw->empty) {
837 m = audio_MIN (m, sw->total_hw_samples_mixed);
838 nb_live += 1;
839 }
840 }
841
842 *nb_livep = nb_live;
843 return m;
844}
845
846int audio_pcm_hw_get_live_out2 (HWVoiceOut *hw, int *nb_live)
847{
848 int smin;
849
850 smin = audio_pcm_hw_find_min_out (hw, nb_live);
851
852 if (!*nb_live) {
853 return 0;
854 }
855 else {
856 int live = smin;
857
858 if (audio_bug (AUDIO_FUNC, live < 0 || live > hw->samples)) {
859 dolog ("live=%d hw->samples=%d\n", live, hw->samples);
860 return 0;
861 }
862 return live;
863 }
864}
865
866int audio_pcm_hw_get_live_out (HWVoiceOut *hw)
867{
868 int nb_live;
869 int live;
870
871 live = audio_pcm_hw_get_live_out2 (hw, &nb_live);
872 if (audio_bug (AUDIO_FUNC, live < 0 || live > hw->samples)) {
873 dolog ("live=%d hw->samples=%d\n", live, hw->samples);
874 return 0;
875 }
876 return live;
877}
878
879/*
880 * Soft voice (playback)
881 */
882int audio_pcm_sw_write (SWVoiceOut *sw, void *buf, int size)
883{
884 int hwsamples, samples, isamp, osamp, wpos, live, dead, left, swlim, blck;
885 int ret = 0, pos = 0, total = 0;
886
887 if (!sw) {
888 return size;
889 }
890
891 hwsamples = sw->hw->samples;
892
893 live = sw->total_hw_samples_mixed;
894 if (audio_bug (AUDIO_FUNC, live < 0 || live > hwsamples)){
895 dolog ("live=%d hw->samples=%d\n", live, hwsamples);
896 return 0;
897 }
898
899 if (live == hwsamples) {
900#ifdef DEBUG_OUT
901 dolog ("%s is full %d\n", sw->name, live);
902#endif
903 return 0;
904 }
905
906 wpos = (sw->hw->rpos + live) % hwsamples;
907 samples = size >> sw->info.shift;
908
909 dead = hwsamples - live;
910 swlim = ((int64_t) dead << 32) / sw->ratio;
911 swlim = audio_MIN (swlim, samples);
912 if (swlim) {
913#ifndef VBOX
914 sw->conv (sw->buf, buf, swlim, &sw->vol);
915#else
916 sw->conv (sw->buf, buf, swlim, &pcm_out_volume);
917#endif
918 }
919
920 while (swlim) {
921 dead = hwsamples - live;
922 left = hwsamples - wpos;
923 blck = audio_MIN (dead, left);
924 if (!blck) {
925 break;
926 }
927 isamp = swlim;
928 osamp = blck;
929 st_rate_flow_mix (
930 sw->rate,
931 sw->buf + pos,
932 sw->hw->mix_buf + wpos,
933 &isamp,
934 &osamp
935 );
936 ret += isamp;
937 swlim -= isamp;
938 pos += isamp;
939 live += osamp;
940 wpos = (wpos + osamp) % hwsamples;
941 total += osamp;
942 }
943
944 sw->total_hw_samples_mixed += total;
945 sw->empty = sw->total_hw_samples_mixed == 0;
946
947#ifdef DEBUG_OUT
948 dolog (
949 "%s: write size %d ret %d total sw %d\n",
950 SW_NAME (sw),
951 size >> sw->info.shift,
952 ret,
953 sw->total_hw_samples_mixed
954 );
955#endif
956
957 return ret << sw->info.shift;
958}
959
960#ifdef DEBUG_AUDIO
961static void audio_pcm_print_info (const char *cap, struct audio_pcm_info *info)
962{
963 dolog ("%s: bits %d, sign %d, freq %d, nchan %d\n",
964 cap, info->bits, info->sign, info->freq, info->nchannels);
965}
966#endif
967
968#define DAC
969#include "audio_template.h"
970#undef DAC
971#include "audio_template.h"
972
973int AUD_write (SWVoiceOut *sw, void *buf, int size)
974{
975 int bytes;
976
977 if (!sw) {
978 /* XXX: Consider options */
979 return size;
980 }
981
982 if (!sw->hw->enabled) {
983 dolog ("Writing to disabled voice %s\n", SW_NAME (sw));
984 return 0;
985 }
986
987 bytes = sw->hw->pcm_ops->write (sw, buf, size);
988 return bytes;
989}
990
991int AUD_read (SWVoiceIn *sw, void *buf, int size)
992{
993 int bytes;
994
995 if (!sw) {
996 /* XXX: Consider options */
997 return size;
998 }
999
1000 if (!sw->hw->enabled) {
1001 dolog ("Reading from disabled voice %s\n", SW_NAME (sw));
1002 return 0;
1003 }
1004
1005 bytes = sw->hw->pcm_ops->read (sw, buf, size);
1006 return bytes;
1007}
1008
1009int AUD_get_buffer_size_out (SWVoiceOut *sw)
1010{
1011 return sw->hw->samples << sw->hw->info.shift;
1012}
1013
1014void AUD_set_active_out (SWVoiceOut *sw, int on)
1015{
1016 HWVoiceOut *hw;
1017
1018 if (!sw) {
1019 return;
1020 }
1021
1022 hw = sw->hw;
1023 if (sw->active != on) {
1024 SWVoiceOut *temp_sw;
1025 SWVoiceCap *sc;
1026
1027 if (on) {
1028 hw->pending_disable = 0;
1029 if (!hw->enabled) {
1030 hw->enabled = 1;
1031 hw->pcm_ops->ctl_out (hw, VOICE_ENABLE);
1032 }
1033 }
1034 else {
1035 if (hw->enabled) {
1036 int nb_active = 0;
1037
1038 for (temp_sw = hw->sw_head.lh_first; temp_sw;
1039 temp_sw = temp_sw->entries.le_next) {
1040 nb_active += temp_sw->active != 0;
1041 }
1042
1043 hw->pending_disable = nb_active == 1;
1044 }
1045 }
1046
1047 for (sc = hw->cap_head.lh_first; sc; sc = sc->entries.le_next) {
1048 sc->sw.active = hw->enabled;
1049 if (hw->enabled) {
1050 audio_capture_maybe_changed (sc->cap, 1);
1051 }
1052 }
1053 sw->active = on;
1054 }
1055}
1056
1057void AUD_set_active_in (SWVoiceIn *sw, int on)
1058{
1059 HWVoiceIn *hw;
1060
1061 if (!sw) {
1062 return;
1063 }
1064
1065 hw = sw->hw;
1066 if (sw->active != on) {
1067 SWVoiceIn *temp_sw;
1068
1069 if (on) {
1070 if (!hw->enabled) {
1071 hw->enabled = 1;
1072 hw->pcm_ops->ctl_in (hw, VOICE_ENABLE);
1073 }
1074 sw->total_hw_samples_acquired = hw->total_samples_captured;
1075 }
1076 else {
1077 if (hw->enabled) {
1078 int nb_active = 0;
1079
1080 for (temp_sw = hw->sw_head.lh_first; temp_sw;
1081 temp_sw = temp_sw->entries.le_next) {
1082 nb_active += temp_sw->active != 0;
1083 }
1084
1085 if (nb_active == 1) {
1086 hw->enabled = 0;
1087 hw->pcm_ops->ctl_in (hw, VOICE_DISABLE);
1088 }
1089 }
1090 }
1091 sw->active = on;
1092 }
1093}
1094
1095static int audio_get_avail (SWVoiceIn *sw)
1096{
1097 int live;
1098
1099 if (!sw) {
1100 return 0;
1101 }
1102
1103 live = sw->hw->total_samples_captured - sw->total_hw_samples_acquired;
1104 if (audio_bug (AUDIO_FUNC, live < 0 || live > sw->hw->samples)) {
1105 dolog ("live=%d sw->hw->samples=%d\n", live, sw->hw->samples);
1106 return 0;
1107 }
1108
1109 ldebug (
1110 "%s: get_avail live %d ret %lld\n",
1111 SW_NAME (sw),
1112 live, (((int64_t) live << 32) / sw->ratio) << sw->info.shift
1113 );
1114
1115 return (((int64_t) live << 32) / sw->ratio) << sw->info.shift;
1116}
1117
1118static int audio_get_free (SWVoiceOut *sw)
1119{
1120 int live, dead;
1121
1122 if (!sw) {
1123 return 0;
1124 }
1125
1126 live = sw->total_hw_samples_mixed;
1127
1128 if (audio_bug (AUDIO_FUNC, live < 0 || live > sw->hw->samples)) {
1129 dolog ("live=%d sw->hw->samples=%d\n", live, sw->hw->samples);
1130 return 0;
1131 }
1132
1133 dead = sw->hw->samples - live;
1134
1135#ifdef DEBUG_OUT
1136 dolog ("%s: get_free live %d dead %d ret %lld\n",
1137 SW_NAME (sw),
1138 live, dead, (((int64_t) dead << 32) / sw->ratio) << sw->info.shift);
1139#endif
1140
1141 return (((int64_t) dead << 32) / sw->ratio) << sw->info.shift;
1142}
1143
1144static void audio_capture_mix_and_clear (HWVoiceOut *hw, int rpos, int samples)
1145{
1146 int n;
1147
1148 if (hw->enabled) {
1149 SWVoiceCap *sc;
1150
1151 for (sc = hw->cap_head.lh_first; sc; sc = sc->entries.le_next) {
1152 SWVoiceOut *sw = &sc->sw;
1153 int rpos2 = rpos;
1154
1155 n = samples;
1156 while (n) {
1157 int till_end_of_hw = hw->samples - rpos2;
1158 int to_write = audio_MIN (till_end_of_hw, n);
1159 int bytes = to_write << hw->info.shift;
1160 int written;
1161
1162 sw->buf = hw->mix_buf + rpos2;
1163 written = audio_pcm_sw_write (sw, NULL, bytes);
1164 if (written - bytes) {
1165 dolog ("Could not mix %d bytes into a capture "
1166 "buffer, mixed %d\n",
1167 bytes, written);
1168 break;
1169 }
1170 n -= to_write;
1171 rpos2 = (rpos2 + to_write) % hw->samples;
1172 }
1173 }
1174 }
1175
1176 n = audio_MIN (samples, hw->samples - rpos);
1177 mixeng_sniff_and_clear (hw, hw->mix_buf + rpos, n);
1178 mixeng_sniff_and_clear (hw, hw->mix_buf, samples - n);
1179}
1180
1181static void audio_run_out (AudioState *s)
1182{
1183 HWVoiceOut *hw = NULL;
1184 SWVoiceOut *sw;
1185
1186 while ((hw = audio_pcm_hw_find_any_enabled_out (s, hw))) {
1187 int played;
1188 int live, free, nb_live, cleanup_required, prev_rpos;
1189
1190 live = audio_pcm_hw_get_live_out2 (hw, &nb_live);
1191 if (!nb_live) {
1192 live = 0;
1193 }
1194
1195 if (audio_bug (AUDIO_FUNC, live < 0 || live > hw->samples)) {
1196 dolog ("live=%d hw->samples=%d\n", live, hw->samples);
1197 continue;
1198 }
1199
1200 if (hw->pending_disable && !nb_live) {
1201 SWVoiceCap *sc;
1202#ifdef DEBUG_OUT
1203 dolog ("Disabling voice\n");
1204#endif
1205 hw->enabled = 0;
1206 hw->pending_disable = 0;
1207 hw->pcm_ops->ctl_out (hw, VOICE_DISABLE);
1208 for (sc = hw->cap_head.lh_first; sc; sc = sc->entries.le_next) {
1209 sc->sw.active = 0;
1210 audio_recalc_and_notify_capture (sc->cap);
1211 }
1212 continue;
1213 }
1214
1215 if (!live) {
1216 for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) {
1217 if (sw->active) {
1218 free = audio_get_free (sw);
1219 if (free > 0) {
1220 sw->callback.fn (sw->callback.opaque, free);
1221 }
1222 }
1223 }
1224 continue;
1225 }
1226
1227 prev_rpos = hw->rpos;
1228 played = hw->pcm_ops->run_out (hw);
1229 if (audio_bug (AUDIO_FUNC, hw->rpos >= hw->samples)) {
1230 dolog ("hw->rpos=%d hw->samples=%d played=%d\n",
1231 hw->rpos, hw->samples, played);
1232 hw->rpos = 0;
1233 }
1234
1235#ifdef DEBUG_OUT
1236 dolog ("played=%d\n", played);
1237#endif
1238
1239 if (played) {
1240 hw->ts_helper += played;
1241 audio_capture_mix_and_clear (hw, prev_rpos, played);
1242 }
1243
1244 cleanup_required = 0;
1245 for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) {
1246 if (!sw->active && sw->empty) {
1247 continue;
1248 }
1249
1250 if (audio_bug (AUDIO_FUNC, played > sw->total_hw_samples_mixed)) {
1251 dolog ("played=%d sw->total_hw_samples_mixed=%d\n",
1252 played, sw->total_hw_samples_mixed);
1253 played = sw->total_hw_samples_mixed;
1254 }
1255
1256 sw->total_hw_samples_mixed -= played;
1257
1258 if (!sw->total_hw_samples_mixed) {
1259 sw->empty = 1;
1260 cleanup_required |= !sw->active && !sw->callback.fn;
1261 }
1262
1263 if (sw->active) {
1264 free = audio_get_free (sw);
1265 if (free > 0) {
1266 sw->callback.fn (sw->callback.opaque, free);
1267 }
1268 }
1269 }
1270
1271 if (cleanup_required) {
1272 SWVoiceOut *sw1;
1273
1274 sw = hw->sw_head.lh_first;
1275 while (sw) {
1276 sw1 = sw->entries.le_next;
1277 if (!sw->active && !sw->callback.fn) {
1278#ifdef DEBUG_PLIVE
1279 dolog ("Finishing with old voice\n");
1280#endif
1281 audio_close_out (s, sw);
1282 }
1283 sw = sw1;
1284 }
1285 }
1286 }
1287}
1288
1289static void audio_run_in (AudioState *s)
1290{
1291 HWVoiceIn *hw = NULL;
1292
1293 while ((hw = audio_pcm_hw_find_any_enabled_in (s, hw))) {
1294 SWVoiceIn *sw;
1295 int captured, min;
1296
1297 captured = hw->pcm_ops->run_in (hw);
1298
1299 min = audio_pcm_hw_find_min_in (hw);
1300 hw->total_samples_captured += captured - min;
1301 hw->ts_helper += captured;
1302
1303 for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) {
1304 sw->total_hw_samples_acquired -= min;
1305
1306 if (sw->active) {
1307 int avail;
1308
1309 avail = audio_get_avail (sw);
1310 if (avail > 0) {
1311 sw->callback.fn (sw->callback.opaque, avail);
1312 }
1313 }
1314 }
1315 }
1316}
1317
1318static void audio_run_capture (AudioState *s)
1319{
1320 CaptureVoiceOut *cap;
1321
1322 for (cap = s->cap_head.lh_first; cap; cap = cap->entries.le_next) {
1323 int live, rpos, captured;
1324 HWVoiceOut *hw = &cap->hw;
1325 SWVoiceOut *sw;
1326
1327 captured = live = audio_pcm_hw_get_live_out (hw);
1328 rpos = hw->rpos;
1329 while (live) {
1330 int left = hw->samples - rpos;
1331 int to_capture = audio_MIN (live, left);
1332 st_sample_t *src;
1333 struct capture_callback *cb;
1334
1335 src = hw->mix_buf + rpos;
1336 hw->clip (cap->buf, src, to_capture);
1337 mixeng_sniff_and_clear (hw, src, to_capture);
1338
1339 for (cb = cap->cb_head.lh_first; cb; cb = cb->entries.le_next) {
1340 cb->ops.capture (cb->opaque, cap->buf,
1341 to_capture << hw->info.shift);
1342 }
1343 rpos = (rpos + to_capture) % hw->samples;
1344 live -= to_capture;
1345 }
1346 hw->rpos = rpos;
1347
1348 for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) {
1349 if (!sw->active && sw->empty) {
1350 continue;
1351 }
1352
1353 if (audio_bug (AUDIO_FUNC, captured > sw->total_hw_samples_mixed)) {
1354 dolog ("captured=%d sw->total_hw_samples_mixed=%d\n",
1355 captured, sw->total_hw_samples_mixed);
1356 captured = sw->total_hw_samples_mixed;
1357 }
1358
1359 sw->total_hw_samples_mixed -= captured;
1360 sw->empty = sw->total_hw_samples_mixed == 0;
1361 }
1362 }
1363}
1364
1365static void audio_timer (void *opaque)
1366{
1367 AudioState *s = opaque;
1368
1369 audio_run_out (s);
1370 audio_run_in (s);
1371 audio_run_capture (s);
1372
1373 TMTimerSet (s->ts, TMTimerGet (s->ts) + conf.period.ticks);
1374}
1375
1376static struct audio_option audio_options[] = {
1377 /* DAC */
1378 {"DAC_FIXED_SETTINGS", AUD_OPT_BOOL, &conf.fixed_out.enabled,
1379 "Use fixed settings for host DAC", NULL, 0},
1380
1381 {"DAC_FIXED_FREQ", AUD_OPT_INT, &conf.fixed_out.settings.freq,
1382 "Frequency for fixed host DAC", NULL, 0},
1383
1384 {"DAC_FIXED_FMT", AUD_OPT_FMT, &conf.fixed_out.settings.fmt,
1385 "Format for fixed host DAC", NULL, 0},
1386
1387 {"DAC_FIXED_CHANNELS", AUD_OPT_INT, &conf.fixed_out.settings.nchannels,
1388 "Number of channels for fixed DAC (1 - mono, 2 - stereo)", NULL, 0},
1389
1390 {"DAC_VOICES", AUD_OPT_INT, &conf.fixed_out.nb_voices,
1391 "Number of voices for DAC", NULL, 0},
1392
1393 /* ADC */
1394 {"ADC_FIXED_SETTINGS", AUD_OPT_BOOL, &conf.fixed_in.enabled,
1395 "Use fixed settings for host ADC", NULL, 0},
1396
1397 {"ADC_FIXED_FREQ", AUD_OPT_INT, &conf.fixed_in.settings.freq,
1398 "Frequency for fixed host ADC", NULL, 0},
1399
1400 {"ADC_FIXED_FMT", AUD_OPT_FMT, &conf.fixed_in.settings.fmt,
1401 "Format for fixed host ADC", NULL, 0},
1402
1403 {"ADC_FIXED_CHANNELS", AUD_OPT_INT, &conf.fixed_in.settings.nchannels,
1404 "Number of channels for fixed ADC (1 - mono, 2 - stereo)", NULL, 0},
1405
1406 {"ADC_VOICES", AUD_OPT_INT, &conf.fixed_in.nb_voices,
1407 "Number of voices for ADC", NULL, 0},
1408
1409 /* Misc */
1410 {"TIMER_PERIOD", AUD_OPT_INT, &conf.period.hz,
1411 "Timer period in HZ (0 - use lowest possible)", NULL, 0},
1412
1413 {"PLIVE", AUD_OPT_BOOL, &conf.plive,
1414 "(undocumented)", NULL, 0},
1415
1416 {NULL, 0, NULL, NULL, NULL, 0}
1417};
1418
1419static int audio_driver_init (AudioState *s, struct audio_driver *drv)
1420{
1421 if (drv->options) {
1422 audio_process_options (drv->name, drv->options);
1423 }
1424 s->drv_opaque = drv->init ();
1425
1426 if (s->drv_opaque) {
1427 audio_init_nb_voices_out (s, drv);
1428 audio_init_nb_voices_in (s, drv);
1429 s->drv = drv;
1430 return 0;
1431 }
1432 else {
1433 dolog ("Could not init `%s' audio driver\n", drv->name);
1434 return -1;
1435 }
1436}
1437
1438static void audio_vm_change_state_handler (void *opaque, int running)
1439{
1440 AudioState *s = opaque;
1441 HWVoiceOut *hwo = NULL;
1442 HWVoiceIn *hwi = NULL;
1443 int op = running ? VOICE_ENABLE : VOICE_DISABLE;
1444
1445 while ((hwo = audio_pcm_hw_find_any_enabled_out (s, hwo))) {
1446 hwo->pcm_ops->ctl_out (hwo, op);
1447 }
1448
1449 while ((hwi = audio_pcm_hw_find_any_enabled_in (s, hwi))) {
1450 hwi->pcm_ops->ctl_in (hwi, op);
1451 }
1452}
1453
1454static void audio_atexit (void)
1455{
1456 AudioState *s = &glob_audio_state;
1457 HWVoiceOut *hwo = NULL;
1458 HWVoiceIn *hwi = NULL;
1459
1460 while ((hwo = audio_pcm_hw_find_any_enabled_out (s, hwo))) {
1461 SWVoiceCap *sc;
1462
1463 hwo->pcm_ops->ctl_out (hwo, VOICE_DISABLE);
1464 hwo->pcm_ops->fini_out (hwo);
1465
1466 for (sc = hwo->cap_head.lh_first; sc; sc = sc->entries.le_next) {
1467 CaptureVoiceOut *cap = sc->cap;
1468 struct capture_callback *cb;
1469
1470 for (cb = cap->cb_head.lh_first; cb; cb = cb->entries.le_next) {
1471 cb->ops.destroy (cb->opaque);
1472 }
1473 }
1474 }
1475
1476 while ((hwi = audio_pcm_hw_find_any_enabled_in (s, hwi))) {
1477 hwi->pcm_ops->ctl_in (hwi, VOICE_DISABLE);
1478 hwi->pcm_ops->fini_in (hwi);
1479 }
1480
1481 if (s->drv) {
1482 s->drv->fini (s->drv_opaque);
1483 }
1484}
1485
1486void AUD_register_card (const char *name, QEMUSoundCard *card)
1487{
1488 AudioState *s = &glob_audio_state;
1489 card->audio = s;
1490 card->name = qemu_strdup (name);
1491 memset (&card->entries, 0, sizeof (card->entries));
1492 LIST_INSERT_HEAD (&s->card_head, card, entries);
1493}
1494
1495void AUD_remove_card (QEMUSoundCard *card)
1496{
1497 LIST_REMOVE (card, entries);
1498 card->audio = NULL;
1499 qemu_free (card->name);
1500}
1501
1502static void audio_timer_helper (PPDMDRVINS pDrvIns, PTMTIMER pTimer)
1503{
1504 AudioState *s = &glob_audio_state;
1505 audio_timer (s);
1506}
1507
1508static int AUD_init (PPDMDRVINS pDrvIns, const char *drvname)
1509{
1510 size_t i;
1511 int done = 0;
1512 AudioState *s = &glob_audio_state;
1513 int rc;
1514
1515 LIST_INIT (&s->hw_head_out);
1516 LIST_INIT (&s->hw_head_in);
1517 LIST_INIT (&s->cap_head);
1518
1519 rc = pDrvIns->pDrvHlp->pfnTMTimerCreate (pDrvIns, TMCLOCK_VIRTUAL,
1520 audio_timer_helper, "Audio timer", &s->ts);
1521 if (VBOX_FAILURE (rc))
1522 return rc;
1523
1524 audio_process_options ("AUDIO", audio_options);
1525
1526 s->nb_hw_voices_out = conf.fixed_out.nb_voices;
1527 s->nb_hw_voices_in = conf.fixed_in.nb_voices;
1528
1529 if (s->nb_hw_voices_out <= 0) {
1530 dolog ("Bogus number of playback voices %d, setting to 1\n",
1531 s->nb_hw_voices_out);
1532 s->nb_hw_voices_out = 1;
1533 }
1534
1535 if (s->nb_hw_voices_in <= 0) {
1536 dolog ("Bogus number of capture voices %d, setting to 0\n",
1537 s->nb_hw_voices_in);
1538 s->nb_hw_voices_in = 0;
1539 }
1540
1541 LogRel(("Audio: Trying driver '%s'.\n", drvname));
1542
1543 if (drvname) {
1544 int found = 0;
1545
1546 for (i = 0; i < sizeof (drvtab) / sizeof (drvtab[0]); i++) {
1547 if (!strcmp (drvname, drvtab[i]->name)) {
1548 done = !audio_driver_init (s, drvtab[i]);
1549 found = 1;
1550 break;
1551 }
1552 }
1553
1554 if (!found) {
1555 dolog ("Unknown audio driver `%s'\n", drvname);
1556 }
1557 }
1558
1559 if (!done) {
1560 for (i = 0; !done && i < sizeof (drvtab) / sizeof (drvtab[0]); i++) {
1561 if (drvtab[i]->can_be_default) {
1562 LogRel(("Audio: Initialization of driver '%s' failed, trying '%s'.\n",
1563 drvname, drvtab[i]->name));
1564 drvname = drvtab[i]->name;
1565 done = !audio_driver_init (s, drvtab[i]);
1566 }
1567 }
1568 }
1569
1570 if (!done) {
1571 done = !audio_driver_init (s, &no_audio_driver);
1572 if (!done) {
1573 dolog ("Could not initialize audio subsystem\n");
1574 }
1575 else {
1576 LogRel(("Audio: Initialization of driver '%s' failed, using NULL driver.\n", drvname));
1577 dolog ("warning: Using timer based audio emulation\n");
1578 }
1579 }
1580
1581 if (done) {
1582 if (conf.period.hz <= 0) {
1583 if (conf.period.hz < 0) {
1584 dolog ("warning: Timer period is negative - %d "
1585 "treating as zero\n",
1586 conf.period.hz);
1587 }
1588 conf.period.ticks = 1;
1589 }
1590 else {
1591 conf.period.ticks = pDrvIns->pDrvHlp->pfnTMGetVirtualFreq (pDrvIns)
1592 / conf.period.hz;
1593 }
1594 }
1595 else {
1596 /* XXX */
1597 rc = TMTimerDestroy (s->ts);
1598 return rc;
1599 }
1600
1601 LIST_INIT (&s->card_head);
1602 TMTimerSet (s->ts, TMTimerGet (s->ts) + conf.period.ticks);
1603 return VINF_SUCCESS;
1604}
1605
1606int AUD_init_null(void)
1607{
1608 AudioState *s = &glob_audio_state;
1609
1610 return audio_driver_init (s, &no_audio_driver);
1611}
1612
1613CaptureVoiceOut *AUD_add_capture (
1614 AudioState *s,
1615 audsettings_t *as,
1616 struct audio_capture_ops *ops,
1617 void *cb_opaque
1618 )
1619{
1620 CaptureVoiceOut *cap;
1621 struct capture_callback *cb;
1622
1623 if (!s) {
1624 /* XXX suppress */
1625 s = &glob_audio_state;
1626 }
1627
1628 if (audio_validate_settings (as)) {
1629 dolog ("Invalid settings were passed when trying to add capture\n");
1630 audio_print_settings (as);
1631 goto err0;
1632 }
1633
1634 cb = audio_calloc (AUDIO_FUNC, 1, sizeof (*cb));
1635 if (!cb) {
1636 dolog ("Could not allocate capture callback information, size %u\n",
1637 sizeof (*cb));
1638 goto err0;
1639 }
1640 cb->ops = *ops;
1641 cb->opaque = cb_opaque;
1642
1643 cap = audio_pcm_capture_find_specific (s, as);
1644 if (cap) {
1645 LIST_INSERT_HEAD (&cap->cb_head, cb, entries);
1646 return cap;
1647 }
1648 else {
1649 HWVoiceOut *hw;
1650 CaptureVoiceOut *cap;
1651
1652 cap = audio_calloc (AUDIO_FUNC, 1, sizeof (*cap));
1653 if (!cap) {
1654 dolog ("Could not allocate capture voice, size %u\n",
1655 sizeof (*cap));
1656 goto err1;
1657 }
1658
1659 hw = &cap->hw;
1660 LIST_INIT (&hw->sw_head);
1661 LIST_INIT (&cap->cb_head);
1662
1663 /* XXX find a more elegant way */
1664 hw->samples = 4096 * 4;
1665 hw->mix_buf = audio_calloc (AUDIO_FUNC, hw->samples,
1666 sizeof (st_sample_t));
1667 if (!hw->mix_buf) {
1668 dolog ("Could not allocate capture mix buffer (%d samples)\n",
1669 hw->samples);
1670 goto err2;
1671 }
1672
1673 audio_pcm_init_info (&hw->info, as);
1674
1675 cap->buf = audio_calloc (AUDIO_FUNC, hw->samples, 1 << hw->info.shift);
1676 if (!cap->buf) {
1677 dolog ("Could not allocate capture buffer "
1678 "(%d samples, each %d bytes)\n",
1679 hw->samples, 1 << hw->info.shift);
1680 goto err3;
1681 }
1682
1683 hw->clip = mixeng_clip
1684 [hw->info.nchannels == 2]
1685 [hw->info.sign]
1686 [hw->info.swap_endianness]
1687 [hw->info.bits == 16];
1688
1689 LIST_INSERT_HEAD (&s->cap_head, cap, entries);
1690 LIST_INSERT_HEAD (&cap->cb_head, cb, entries);
1691
1692 hw = NULL;
1693 while ((hw = audio_pcm_hw_find_any_out (s, hw))) {
1694 audio_attach_capture (s, hw);
1695 }
1696 return cap;
1697
1698 err3:
1699 qemu_free (cap->hw.mix_buf);
1700 err2:
1701 qemu_free (cap);
1702 err1:
1703 qemu_free (cb);
1704 err0:
1705 return NULL;
1706 }
1707}
1708
1709void AUD_del_capture (CaptureVoiceOut *cap, void *cb_opaque)
1710{
1711 struct capture_callback *cb;
1712
1713 for (cb = cap->cb_head.lh_first; cb; cb = cb->entries.le_next) {
1714 if (cb->opaque == cb_opaque) {
1715 cb->ops.destroy (cb_opaque);
1716 LIST_REMOVE (cb, entries);
1717 qemu_free (cb);
1718
1719 if (!cap->cb_head.lh_first) {
1720 SWVoiceOut *sw = cap->hw.sw_head.lh_first, *sw1;
1721
1722 while (sw) {
1723 SWVoiceCap *sc = (SWVoiceCap *) sw;
1724#ifdef DEBUG_CAPTURE
1725 dolog ("freeing %s\n", sw->name);
1726#endif
1727
1728 sw1 = sw->entries.le_next;
1729 if (sw->rate) {
1730 st_rate_stop (sw->rate);
1731 sw->rate = NULL;
1732 }
1733 LIST_REMOVE (sw, entries);
1734 LIST_REMOVE (sc, entries);
1735 qemu_free (sc);
1736 sw = sw1;
1737 }
1738 LIST_REMOVE (cap, entries);
1739 qemu_free (cap);
1740 }
1741 return;
1742 }
1743 }
1744}
1745
1746void AUD_set_volume_out (SWVoiceOut *sw, int mute, uint8_t lvol, uint8_t rvol)
1747{
1748 if (sw)
1749 {
1750 sw->vol.mute = mute;
1751 sw->vol.l = (uint32_t)lvol * 0x808080; /* maximum is INT_MAX = 0x7fffffff */
1752 sw->vol.r = (uint32_t)rvol * 0x808080; /* maximum is INT_MAX = 0x7fffffff */
1753 }
1754}
1755
1756void AUD_set_volume (audmixerctl_t mt, int *mute, uint8_t *lvol, uint8_t *rvol)
1757{
1758 volume_t *vol = NULL;
1759 const char *name;
1760
1761 switch (mt)
1762 {
1763 case AUD_MIXER_VOLUME:
1764 name = "MASTER";
1765 vol = &pcm_out_volume;
1766 break;
1767 case AUD_MIXER_PCM:
1768 name = "PCM_OUT";
1769 break;
1770 case AUD_MIXER_LINE_IN:
1771 name = "LINE_IN";
1772 vol = &pcm_in_volume;
1773 break;
1774 default:
1775 return;
1776
1777 }
1778
1779 if (vol)
1780 {
1781 vol->mute = *mute;
1782 vol->l = ((uint32_t)*lvol) * 0x808080; /* maximum is INT_MAX = 0x7fffffff */
1783 vol->r = ((uint32_t)*rvol) * 0x808080; /* maximum is INT_MAX = 0x7fffffff */
1784 }
1785#if 0
1786 LogRel(("AUDIO: Set '%s' volume to %d%%/%d%%\n", name, (*lvol*100)/255, (*rvol*100)/255l));
1787#endif
1788}
1789
1790void AUD_set_record_source (audrecsource_t *ars, audrecsource_t *als)
1791{
1792 LogRel(("Audio: set_record_source ars=%d als=%d (not implemented)\n", *ars, *als));
1793}
1794
1795/**
1796 * Queries an interface to the driver.
1797 *
1798 * @returns Pointer to interface.
1799 * @returns NULL if the interface was not supported by the driver.
1800 * @param pInterface Pointer to this interface structure.
1801 * @param enmInterface The requested interface identification.
1802 * @thread Any thread.
1803 */
1804static DECLCALLBACK(void *) drvAudioQueryInterface(PPDMIBASE pInterface,
1805 PDMINTERFACE enmInterface)
1806{
1807 PPDMDRVINS pDrvIns = PDMIBASE_2_PDMDRV(pInterface);
1808 PDRVAUDIO pData = PDMINS2DATA(pDrvIns, PDRVAUDIO);
1809 switch (enmInterface)
1810 {
1811 case PDMINTERFACE_BASE:
1812 return &pDrvIns->IBase;
1813 case PDMINTERFACE_AUDIO_CONNECTOR:
1814 return &pData->IAudioConnector;
1815 default:
1816 return NULL;
1817 }
1818}
1819
1820/**
1821 * Power Off notification.
1822 *
1823 * @param pDrvIns The driver instance data.
1824 */
1825static DECLCALLBACK(void) drvAudioPowerOff(PPDMDRVINS pDrvIns)
1826{
1827 AudioState *s = &glob_audio_state;
1828 audio_vm_change_state_handler (s, 0);
1829}
1830
1831/**
1832 * Destruct a driver instance.
1833 *
1834 * Most VM resources are freed by the VM. This callback is provided so that any non-VM
1835 * resources can be freed correctly.
1836 *
1837 * @param pDrvIns The driver instance data.
1838 */
1839static DECLCALLBACK(void) drvAudioDestruct(PPDMDRVINS pDrvIns)
1840{
1841 LogFlow(("drvAUDIODestruct:\n"));
1842
1843 audio_atexit ();
1844}
1845
1846/**
1847 * Construct an AUDIO driver instance.
1848 *
1849 * @returns VBox status.
1850 * @param pDrvIns The driver instance data.
1851 * If the registration structure is needed, pDrvIns->pDrvReg points to it.
1852 * @param pCfgHandle Configuration node handle for the driver. Use this to obtain the configuration
1853 * of the driver instance. It's also found in pDrvIns->pCfgHandle, but like
1854 * iInstance it's expected to be used a bit in this function.
1855 */
1856static DECLCALLBACK(int) drvAudioConstruct(PPDMDRVINS pDrvIns, PCFGMNODE pCfgHandle)
1857{
1858 int rc;
1859 PDRVAUDIO pData = PDMINS2DATA(pDrvIns, PDRVAUDIO);
1860 char *drvname;
1861
1862 LogFlow(("drvAUDIOConstruct:\n"));
1863 /*
1864 * Validate the config.
1865 */
1866 if (!CFGMR3AreValuesValid(pCfgHandle, "AudioDriver\0"))
1867 return VERR_PDM_DRVINS_UNKNOWN_CFG_VALUES;
1868
1869 /*
1870 * Init the static parts.
1871 */
1872 pData->pDrvIns = pDrvIns;
1873 /* IBase */
1874 pDrvIns->IBase.pfnQueryInterface = drvAudioQueryInterface;
1875 /* IAudio */
1876 /* pData->IAudioConnector.pfn; */
1877
1878 glob_audio_state.pDrvIns = pDrvIns;
1879
1880 rc = CFGMR3QueryStringAlloc (pCfgHandle, "AudioDriver", &drvname);
1881 if (VBOX_FAILURE (rc))
1882 return rc;
1883
1884 rc = AUD_init (pDrvIns, drvname);
1885 if (VBOX_FAILURE (rc))
1886 return rc;
1887
1888 MMR3HeapFree (drvname);
1889
1890 return VINF_SUCCESS;
1891}
1892
1893/**
1894 * Suspend notification.
1895 *
1896 * @returns VBox status.
1897 * @param pDrvIns The driver instance data.
1898 */
1899static DECLCALLBACK(void) drvAudioSuspend(PPDMDRVINS pDrvIns)
1900{
1901 AudioState *s = &glob_audio_state;
1902 audio_vm_change_state_handler (s, 0);
1903}
1904
1905/**
1906 * Resume notification.
1907 *
1908 * @returns VBox status.
1909 * @param pDrvIns The driver instance data.
1910 */
1911static DECLCALLBACK(void) audioResume(PPDMDRVINS pDrvIns)
1912{
1913 AudioState *s = &glob_audio_state;
1914 audio_vm_change_state_handler (s, 1);
1915}
1916
1917/**
1918 * Audio driver registration record.
1919 */
1920const PDMDRVREG g_DrvAUDIO =
1921{
1922 /* u32Version */
1923 PDM_DRVREG_VERSION,
1924 /* szDriverName */
1925 "AUDIO",
1926 /* pszDescription */
1927 "AUDIO Driver",
1928 /* fFlags */
1929 PDM_DRVREG_FLAGS_HOST_BITS_DEFAULT,
1930 /* fClass. */
1931 PDM_DRVREG_CLASS_AUDIO,
1932 /* cMaxInstances */
1933 1,
1934 /* cbInstance */
1935 sizeof(DRVAUDIO),
1936 /* pfnConstruct */
1937 drvAudioConstruct,
1938 /* pfnDestruct */
1939 drvAudioDestruct,
1940 /* pfnIOCtl */
1941 NULL,
1942 /* pfnPowerOn */
1943 NULL,
1944 /* pfnReset */
1945 NULL,
1946 /* pfnSuspend */
1947 drvAudioSuspend,
1948 /* pfnResume */
1949 audioResume,
1950 /* pfnDetach */
1951 NULL,
1952 /* pfnPowerOff */
1953 drvAudioPowerOff
1954};
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