VirtualBox

source: vbox/trunk/src/VBox/Devices/Audio/audio.c@ 19061

Last change on this file since 19061 was 19061, checked in by vboxsync, 16 years ago

Devices/audio.c: ditto.
  • Property svn:eol-style set to native
  • Property svn:keywords set to Author Date Id Revision
File size: 51.2 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 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#if defined (RT_OS_LINUX) || defined (RT_OS_FREEBSD)
66 &oss_audio_driver,
67#endif
68#ifdef RT_OS_LINUX
69# ifdef VBOX_WITH_ALSA
70 &alsa_audio_driver,
71# endif
72# ifdef VBOX_WITH_PULSE
73 &pulse_audio_driver,
74# endif
75#endif /* RT_OS_LINUX */
76#ifdef RT_OS_DARWIN
77 &coreaudio_audio_driver,
78#endif
79#ifdef RT_OS_WINDOWS
80 &dsound_audio_driver,
81#endif
82#ifdef RT_OS_L4
83 &oss_audio_driver,
84#endif
85#ifdef RT_OS_SOLARIS
86 &solaudio_audio_driver,
87#endif
88 &no_audio_driver
89};
90
91static char *audio_streamname;
92
93const char *audio_get_stream_name(void)
94{
95 return audio_streamname;
96}
97
98struct fixed_settings {
99 int enabled;
100 int nb_voices;
101 int greedy;
102 audsettings_t settings;
103};
104
105static struct {
106 struct fixed_settings fixed_out;
107 struct fixed_settings fixed_in;
108 union {
109 int hz;
110 int64_t ticks;
111 } period;
112 int plive;
113} conf = {
114 { /* DAC fixed settings */
115 1, /* enabled */
116 1, /* nb_voices */
117 1, /* greedy */
118 {
119 44100, /* freq */
120 2, /* nchannels */
121 AUD_FMT_S16 /* fmt */
122 }
123 },
124
125 { /* ADC fixed settings */
126 1, /* enabled */
127 1, /* nb_voices */
128 1, /* greedy */
129 {
130 44100, /* freq */
131 2, /* nchannels */
132 AUD_FMT_S16 /* fmt */
133 }
134 },
135
136 { 100 }, /* period */
137 0, /* plive */
138};
139
140static AudioState glob_audio_state;
141
142volume_t nominal_volume = {
143 0,
144#ifdef FLOAT_MIXENG
145 1.0,
146 1.0
147#else
148#ifndef VBOX
149 UINT_MAX,
150 UINT_MAX
151#else
152 INT_MAX,
153 INT_MAX
154#endif
155#endif
156};
157
158#ifdef VBOX
159volume_t sum_out_volume =
160{
161 0,
162 INT_MAX,
163 INT_MAX
164};
165volume_t master_out_volume =
166{
167 0,
168 INT_MAX,
169 INT_MAX
170};
171volume_t pcm_out_volume =
172{
173 0,
174 INT_MAX,
175 INT_MAX
176};
177volume_t pcm_in_volume =
178{
179 0,
180 INT_MAX,
181 INT_MAX
182};
183#endif
184
185/* http://www.df.lth.se/~john_e/gems/gem002d.html */
186/* http://www.multi-platforms.com/Tips/PopCount.htm */
187uint32_t popcount (uint32_t u)
188{
189 u = ((u&0x55555555) + ((u>>1)&0x55555555));
190 u = ((u&0x33333333) + ((u>>2)&0x33333333));
191 u = ((u&0x0f0f0f0f) + ((u>>4)&0x0f0f0f0f));
192 u = ((u&0x00ff00ff) + ((u>>8)&0x00ff00ff));
193 u = ( u&0x0000ffff) + (u>>16);
194 return u;
195}
196
197uint32_t lsbindex (uint32_t u)
198{
199 return popcount ((u&-u)-1);
200}
201
202uint64_t audio_get_clock (void)
203{
204 AudioState *s;
205
206 s = &glob_audio_state;
207 return PDMDrvHlpTMGetVirtualTime (s->pDrvIns);
208}
209
210uint64_t audio_get_ticks_per_sec (void)
211{
212 AudioState *s;
213
214 s = &glob_audio_state;
215 return PDMDrvHlpTMGetVirtualFreq (s->pDrvIns);
216}
217
218#ifdef AUDIO_IS_FLAWLESS_AND_NO_CHECKS_ARE_REQURIED
219#error No its not
220#else
221int audio_bug (const char *funcname, int cond)
222{
223 if (cond) {
224 static int shown;
225
226 AUD_log (NULL, "A bug was just triggered in %s\n", funcname);
227 if (!shown) {
228 shown = 1;
229 AUD_log (NULL, "Save all your work and restart without audio\n");
230 AUD_log (NULL, "Please send a bug, see www.virtualbox.org\n");
231 AUD_log (NULL, "I am sorry\n");
232 }
233 AUD_log (NULL, "Context:\n");
234
235#if defined AUDIO_BREAKPOINT_ON_BUG
236# if defined HOST_I386
237# if defined __GNUC__
238 __asm__ ("int3");
239# elif defined _MSC_VER
240 _asm _emit 0xcc;
241# else
242 abort ();
243# endif
244# else
245 abort ();
246# endif
247#endif
248 }
249
250 return cond;
251}
252#endif
253
254static inline int audio_bits_to_index (int bits)
255{
256 switch (bits) {
257 case 8:
258 return 0;
259
260 case 16:
261 return 1;
262
263 case 32:
264 return 2;
265
266 default:
267 audio_bug ("bits_to_index", 1);
268 AUD_log (NULL, "invalid bits %d\n", bits);
269 return 0;
270 }
271}
272
273void *audio_calloc (const char *funcname, int nmemb, size_t size)
274{
275 int cond;
276 size_t len;
277
278 len = nmemb * size;
279 cond = !nmemb || !size;
280 cond |= nmemb < 0;
281 cond |= len < size;
282
283 if (audio_bug ("audio_calloc", cond)) {
284 AUD_log (NULL, "%s passed invalid arguments to audio_calloc\n",
285 funcname);
286 AUD_log (NULL, "nmemb=%d size=%" FMTZ "u (len=%" FMTZ "u)\n",
287 nmemb, size, len);
288 return NULL;
289 }
290
291 return qemu_mallocz (len);
292}
293
294static const char *audio_audfmt_to_string (audfmt_e fmt)
295{
296 switch (fmt) {
297 case AUD_FMT_U8:
298 return "U8";
299
300 case AUD_FMT_U16:
301 return "U16";
302
303 case AUD_FMT_U32:
304 return "U32";
305
306 case AUD_FMT_S8:
307 return "S8";
308
309 case AUD_FMT_S16:
310 return "S16";
311
312 case AUD_FMT_S32:
313 return "S32";
314 }
315
316 dolog ("Bogus audfmt %d returning S16\n", fmt);
317 return "S16";
318}
319
320static audfmt_e audio_string_to_audfmt (const char *s, audfmt_e defval,
321 int *defaultp)
322{
323 if (!strcasecmp (s, "u8")) {
324 *defaultp = 0;
325 return AUD_FMT_U8;
326 }
327 else if (!strcasecmp (s, "u16")) {
328 *defaultp = 0;
329 return AUD_FMT_U16;
330 }
331 else if (!strcasecmp (s, "u32")) {
332 *defaultp = 0;
333 return AUD_FMT_U32;
334 }
335 else if (!strcasecmp (s, "s8")) {
336 *defaultp = 0;
337 return AUD_FMT_S8;
338 }
339 else if (!strcasecmp (s, "s16")) {
340 *defaultp = 0;
341 return AUD_FMT_S16;
342 }
343 else if (!strcasecmp (s, "s32")) {
344 *defaultp = 0;
345 return AUD_FMT_S32;
346 }
347 else {
348 dolog ("Bogus audio format `%s' using %s\n",
349 s, audio_audfmt_to_string (defval));
350 *defaultp = 1;
351 return defval;
352 }
353}
354
355static audfmt_e audio_get_conf_fmt (const char *envname,
356 audfmt_e defval,
357 int *defaultp)
358{
359 const char *var = getenv (envname);
360 if (!var) {
361 *defaultp = 1;
362 return defval;
363 }
364 return audio_string_to_audfmt (var, defval, defaultp);
365}
366
367static int audio_get_conf_int (const char *key, int defval, int *defaultp)
368{
369 int val;
370 char *strval;
371
372 strval = getenv (key);
373 if (strval) {
374 *defaultp = 0;
375 val = atoi (strval);
376 return val;
377 }
378 else {
379 *defaultp = 1;
380 return defval;
381 }
382}
383
384static const char *audio_get_conf_str (const char *key,
385 const char *defval,
386 int *defaultp)
387{
388 const char *val = getenv (key);
389 if (!val) {
390 *defaultp = 1;
391 return defval;
392 }
393 else {
394 *defaultp = 0;
395 return val;
396 }
397}
398
399void AUD_vlog (const char *cap, const char *fmt, va_list va)
400{
401 va_list va2;
402 va_copy (va2, va); /* Have to make a copy here or GCC will break. */
403 if (cap) {
404 Log (("%s: %N", cap, fmt, &va2));
405 }
406 else {
407 Log (("%N", fmt, &va2));
408 }
409 va_end (va2);
410}
411
412void AUD_log (const char *cap, const char *fmt, ...)
413{
414 va_list va;
415
416 va_start (va, fmt);
417 AUD_vlog (cap, fmt, va);
418 va_end (va);
419}
420
421static void audio_process_options (const char *prefix,
422 struct audio_option *opt)
423{
424 char *optname;
425 const char vbox_prefix[] = "VBOX_";
426 size_t preflen;
427
428 if (audio_bug (AUDIO_FUNC, !prefix)) {
429 dolog ("prefix = NULL\n");
430 return;
431 }
432
433 if (audio_bug (AUDIO_FUNC, !opt)) {
434 dolog ("opt = NULL\n");
435 return;
436 }
437
438 preflen = strlen (prefix);
439
440 for (; opt->name; opt++) {
441 size_t len, i;
442 int def;
443
444 if (!opt->valp) {
445 dolog ("Option value pointer for `%s' is not set\n",
446 opt->name);
447 continue;
448 }
449
450 len = strlen (opt->name);
451 /* len of opt->name + len of prefix + size of vbox_prefix
452 * (includes trailing zero) + zero + underscore (on behalf of
453 * sizeof) */
454 optname = qemu_malloc (len + preflen + sizeof (vbox_prefix) + 1);
455 if (!optname) {
456 dolog ("Could not allocate memory for option name `%s'\n",
457 opt->name);
458 continue;
459 }
460
461 strcpy (optname, vbox_prefix);
462
463 /* copy while upcasing, including trailing zero */
464 for (i = 0; i <= preflen; ++i) {
465 optname[i + sizeof (vbox_prefix) - 1] = toupper (prefix[i]);
466 }
467 strcat (optname, "_");
468 strcat (optname, opt->name);
469
470 def = 1;
471 switch (opt->tag) {
472 case AUD_OPT_BOOL:
473 case AUD_OPT_INT:
474 {
475 int *intp = opt->valp;
476 *intp = audio_get_conf_int (optname, *intp, &def);
477 }
478 break;
479
480 case AUD_OPT_FMT:
481 {
482 audfmt_e *fmtp = opt->valp;
483 *fmtp = audio_get_conf_fmt (optname, *fmtp, &def);
484 }
485 break;
486
487 case AUD_OPT_STR:
488 {
489 const char **strp = opt->valp;
490 *strp = audio_get_conf_str (optname, *strp, &def);
491 }
492 break;
493
494 default:
495 dolog ("Bad value tag for option `%s' - %d\n",
496 optname, opt->tag);
497 break;
498 }
499
500 if (!opt->overridenp) {
501 opt->overridenp = &opt->overriden;
502 }
503 *opt->overridenp = !def;
504 qemu_free (optname);
505 }
506}
507
508static void audio_print_settings (audsettings_t *as)
509{
510 dolog ("frequency=%d nchannels=%d fmt=", as->freq, as->nchannels);
511
512 switch (as->fmt) {
513 case AUD_FMT_S8:
514 AUD_log (NULL, "S8");
515 break;
516 case AUD_FMT_U8:
517 AUD_log (NULL, "U8");
518 break;
519 case AUD_FMT_S16:
520 AUD_log (NULL, "S16");
521 break;
522 case AUD_FMT_U16:
523 AUD_log (NULL, "U16");
524 break;
525 case AUD_FMT_S32:
526 AUD_log (NULL, "S32");
527 break;
528 case AUD_FMT_U32:
529 AUD_log (NULL, "U32");
530 break;
531 default:
532 AUD_log (NULL, "invalid(%d)", as->fmt);
533 break;
534 }
535
536 AUD_log (NULL, " endianness=");
537 switch (as->endianness) {
538 case 0:
539 AUD_log (NULL, "little");
540 break;
541 case 1:
542 AUD_log (NULL, "big");
543 break;
544 default:
545 AUD_log (NULL, "invalid");
546 break;
547 }
548 AUD_log (NULL, "\n");
549}
550
551static int audio_validate_settings (audsettings_t *as)
552{
553 int invalid;
554
555 invalid = as->nchannels != 1 && as->nchannels != 2;
556 invalid |= as->endianness != 0 && as->endianness != 1;
557
558 switch (as->fmt) {
559 case AUD_FMT_S8:
560 case AUD_FMT_U8:
561 case AUD_FMT_S16:
562 case AUD_FMT_U16:
563 case AUD_FMT_S32:
564 case AUD_FMT_U32:
565 break;
566 default:
567 invalid = 1;
568 break;
569 }
570
571 invalid |= as->freq <= 0;
572 return invalid ? -1 : 0;
573}
574
575static int audio_pcm_info_eq (struct audio_pcm_info *info, audsettings_t *as)
576{
577 int bits = 8, sign = 0;
578
579 switch (as->fmt) {
580 case AUD_FMT_S8:
581 sign = 1;
582 case AUD_FMT_U8:
583 break;
584
585 case AUD_FMT_S16:
586 sign = 1;
587 case AUD_FMT_U16:
588 bits = 16;
589 break;
590
591 case AUD_FMT_S32:
592 sign = 1;
593 case AUD_FMT_U32:
594 bits = 32;
595 break;
596 }
597 return info->freq == as->freq
598 && info->nchannels == as->nchannels
599 && info->sign == sign
600 && info->bits == bits
601 && info->swap_endianness == (as->endianness != AUDIO_HOST_ENDIANNESS);
602}
603
604void audio_pcm_init_info (struct audio_pcm_info *info, audsettings_t *as)
605{
606 int bits = 8, sign = 0, shift = 0;
607
608 switch (as->fmt) {
609 case AUD_FMT_S8:
610 sign = 1;
611 case AUD_FMT_U8:
612 break;
613
614 case AUD_FMT_S16:
615 sign = 1;
616 case AUD_FMT_U16:
617 bits = 16;
618 shift = 1;
619 break;
620
621 case AUD_FMT_S32:
622 sign = 1;
623 case AUD_FMT_U32:
624 bits = 32;
625 shift = 2;
626 break;
627 }
628
629 info->freq = as->freq;
630 info->bits = bits;
631 info->sign = sign;
632 info->nchannels = as->nchannels;
633 info->shift = (as->nchannels == 2) + shift;
634 info->align = (1 << info->shift) - 1;
635 info->bytes_per_second = info->freq << info->shift;
636 info->swap_endianness = (as->endianness != AUDIO_HOST_ENDIANNESS);
637}
638
639void audio_pcm_info_clear_buf (struct audio_pcm_info *info, void *buf, int len)
640{
641 if (!len) {
642 return;
643 }
644
645 if (info->sign) {
646 memset (buf, 0x00, len << info->shift);
647 }
648 else {
649 switch (info->bits) {
650 case 8:
651 memset (buf, 0x80, len << info->shift);
652 break;
653
654 case 16:
655 {
656 int i;
657 uint16_t *p = buf;
658 int shift = info->nchannels - 1;
659 short s = INT16_MAX;
660
661 if (info->swap_endianness) {
662 s = bswap16 (s);
663 }
664
665 for (i = 0; i < len << shift; i++) {
666 p[i] = s;
667 }
668 }
669 break;
670
671 case 32:
672 {
673 int i;
674 uint32_t *p = buf;
675 int shift = info->nchannels - 1;
676 int32_t s = INT32_MAX;
677
678 if (info->swap_endianness) {
679 s = bswap32 (s);
680 }
681
682 for (i = 0; i < len << shift; i++) {
683 p[i] = s;
684 }
685 }
686 break;
687
688 default:
689 AUD_log (NULL, "audio_pcm_info_clear_buf: invalid bits %d\n",
690 info->bits);
691 break;
692 }
693 }
694}
695
696/*
697 * Capture
698 */
699static void noop_conv (st_sample_t *dst, const void *src,
700 int samples, volume_t *vol)
701{
702 (void) src;
703 (void) dst;
704 (void) samples;
705 (void) vol;
706}
707
708static CaptureVoiceOut *audio_pcm_capture_find_specific (
709 AudioState *s,
710 audsettings_t *as
711 )
712{
713 CaptureVoiceOut *cap;
714
715 for (cap = s->cap_head.lh_first; cap; cap = cap->entries.le_next) {
716 if (audio_pcm_info_eq (&cap->hw.info, as)) {
717 return cap;
718 }
719 }
720 return NULL;
721}
722
723static void audio_notify_capture (CaptureVoiceOut *cap, audcnotification_e cmd)
724{
725 struct capture_callback *cb;
726
727#ifdef DEBUG_CAPTURE
728 dolog ("notification %d sent\n", cmd);
729#endif
730 for (cb = cap->cb_head.lh_first; cb; cb = cb->entries.le_next) {
731 cb->ops.notify (cb->opaque, cmd);
732 }
733}
734
735static void audio_capture_maybe_changed (CaptureVoiceOut *cap, int enabled)
736{
737 if (cap->hw.enabled != enabled) {
738 audcnotification_e cmd;
739 cap->hw.enabled = enabled;
740 cmd = enabled ? AUD_CNOTIFY_ENABLE : AUD_CNOTIFY_DISABLE;
741 audio_notify_capture (cap, cmd);
742 }
743}
744
745static void audio_recalc_and_notify_capture (CaptureVoiceOut *cap)
746{
747 HWVoiceOut *hw = &cap->hw;
748 SWVoiceOut *sw;
749 int enabled = 0;
750
751 for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) {
752 if (sw->active) {
753 enabled = 1;
754 break;
755 }
756 }
757 audio_capture_maybe_changed (cap, enabled);
758}
759
760static void audio_detach_capture (HWVoiceOut *hw)
761{
762 SWVoiceCap *sc = hw->cap_head.lh_first;
763
764 while (sc) {
765 SWVoiceCap *sc1 = sc->entries.le_next;
766 SWVoiceOut *sw = &sc->sw;
767 CaptureVoiceOut *cap = sc->cap;
768 int was_active = sw->active;
769
770 if (sw->rate) {
771 st_rate_stop (sw->rate);
772 sw->rate = NULL;
773 }
774
775 LIST_REMOVE (sw, entries);
776 LIST_REMOVE (sc, entries);
777 qemu_free (sc);
778 if (was_active) {
779 /* We have removed soft voice from the capture:
780 this might have changed the overall status of the capture
781 since this might have been the only active voice */
782 audio_recalc_and_notify_capture (cap);
783 }
784 sc = sc1;
785 }
786}
787
788static int audio_attach_capture (AudioState *s, HWVoiceOut *hw)
789{
790 CaptureVoiceOut *cap;
791
792 audio_detach_capture (hw);
793 for (cap = s->cap_head.lh_first; cap; cap = cap->entries.le_next) {
794 SWVoiceCap *sc;
795 SWVoiceOut *sw;
796 HWVoiceOut *hw_cap = &cap->hw;
797
798 sc = audio_calloc (AUDIO_FUNC, 1, sizeof (*sc));
799 if (!sc) {
800 dolog ("Could not allocate soft capture voice (%u bytes)\n",
801 sizeof (*sc));
802 return -1;
803 }
804
805 sc->cap = cap;
806 sw = &sc->sw;
807 sw->hw = hw_cap;
808 sw->info = hw->info;
809 sw->empty = 1;
810 sw->active = hw->enabled;
811 sw->conv = noop_conv;
812 sw->ratio = ((int64_t) hw_cap->info.freq << 32) / sw->info.freq;
813 sw->rate = st_rate_start (sw->info.freq, hw_cap->info.freq);
814 if (!sw->rate) {
815 dolog ("Could not start rate conversion for `%s'\n", SW_NAME (sw));
816 qemu_free (sw);
817 return -1;
818 }
819 LIST_INSERT_HEAD (&hw_cap->sw_head, sw, entries);
820 LIST_INSERT_HEAD (&hw->cap_head, sc, entries);
821#ifdef DEBUG_CAPTURE
822 asprintf (&sw->name, "for %p %d,%d,%d",
823 hw, sw->info.freq, sw->info.bits, sw->info.nchannels);
824 dolog ("Added %s active = %d\n", sw->name, sw->active);
825#endif
826 if (sw->active) {
827 audio_capture_maybe_changed (cap, 1);
828 }
829 }
830 return 0;
831}
832
833/*
834 * Hard voice (capture)
835 */
836static int audio_pcm_hw_find_min_in (HWVoiceIn *hw)
837{
838 SWVoiceIn *sw;
839 int m = hw->total_samples_captured;
840
841 for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) {
842 if (sw->active) {
843 m = audio_MIN (m, sw->total_hw_samples_acquired);
844 }
845 }
846 return m;
847}
848
849int audio_pcm_hw_get_live_in (HWVoiceIn *hw)
850{
851 int live = hw->total_samples_captured - audio_pcm_hw_find_min_in (hw);
852 if (audio_bug (AUDIO_FUNC, live < 0 || live > hw->samples)) {
853 dolog ("live=%d hw->samples=%d\n", live, hw->samples);
854 return 0;
855 }
856 return live;
857}
858
859/*
860 * Soft voice (capture)
861 */
862static int audio_pcm_sw_get_rpos_in (SWVoiceIn *sw)
863{
864 HWVoiceIn *hw = sw->hw;
865 int live = hw->total_samples_captured - sw->total_hw_samples_acquired;
866 int rpos;
867
868 if (audio_bug (AUDIO_FUNC, live < 0 || live > hw->samples)) {
869 dolog ("live=%d hw->samples=%d\n", live, hw->samples);
870 return 0;
871 }
872
873 rpos = hw->wpos - live;
874 if (rpos >= 0) {
875 return rpos;
876 }
877 else {
878 return hw->samples + rpos;
879 }
880}
881
882int audio_pcm_sw_read (SWVoiceIn *sw, void *buf, int size)
883{
884 HWVoiceIn *hw = sw->hw;
885 int samples, live, ret = 0, swlim, isamp, osamp, rpos, total = 0;
886 st_sample_t *src, *dst = sw->buf;
887
888 rpos = audio_pcm_sw_get_rpos_in (sw) % hw->samples;
889
890 live = hw->total_samples_captured - sw->total_hw_samples_acquired;
891 if (audio_bug (AUDIO_FUNC, live < 0 || live > hw->samples)) {
892 dolog ("live_in=%d hw->samples=%d\n", live, hw->samples);
893 return 0;
894 }
895
896 samples = size >> sw->info.shift;
897 if (!live) {
898 return 0;
899 }
900
901 swlim = (live * sw->ratio) >> 32;
902 swlim = audio_MIN (swlim, samples);
903
904 while (swlim) {
905 src = hw->conv_buf + rpos;
906 isamp = hw->wpos - rpos;
907 /* XXX: <= ? */
908 if (isamp <= 0) {
909 isamp = hw->samples - rpos;
910 }
911
912 if (!isamp) {
913 break;
914 }
915 osamp = swlim;
916
917 if (audio_bug (AUDIO_FUNC, osamp < 0)) {
918 dolog ("osamp=%d\n", osamp);
919 return 0;
920 }
921
922 st_rate_flow (sw->rate, src, dst, &isamp, &osamp);
923 swlim -= osamp;
924 rpos = (rpos + isamp) % hw->samples;
925 dst += osamp;
926 ret += osamp;
927 total += isamp;
928 }
929
930 sw->clip (buf, sw->buf, ret);
931 sw->total_hw_samples_acquired += total;
932 return ret << sw->info.shift;
933}
934
935/*
936 * Hard voice (playback)
937 */
938static int audio_pcm_hw_find_min_out (HWVoiceOut *hw, int *nb_livep)
939{
940 SWVoiceOut *sw;
941 int m = INT_MAX;
942 int nb_live = 0;
943
944 for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) {
945 if (sw->active || !sw->empty) {
946 m = audio_MIN (m, sw->total_hw_samples_mixed);
947 nb_live += 1;
948 }
949 }
950
951 *nb_livep = nb_live;
952 return m;
953}
954
955int audio_pcm_hw_get_live_out2 (HWVoiceOut *hw, int *nb_live)
956{
957 int smin;
958
959 smin = audio_pcm_hw_find_min_out (hw, nb_live);
960
961 if (!*nb_live) {
962 return 0;
963 }
964 else {
965 int live = smin;
966
967 if (audio_bug (AUDIO_FUNC, live < 0 || live > hw->samples)) {
968 dolog ("live=%d hw->samples=%d\n", live, hw->samples);
969 return 0;
970 }
971 return live;
972 }
973}
974
975int audio_pcm_hw_get_live_out (HWVoiceOut *hw)
976{
977 int nb_live;
978 int live;
979
980 live = audio_pcm_hw_get_live_out2 (hw, &nb_live);
981 if (audio_bug (AUDIO_FUNC, live < 0 || live > hw->samples)) {
982 dolog ("live=%d hw->samples=%d\n", live, hw->samples);
983 return 0;
984 }
985 return live;
986}
987
988/*
989 * Soft voice (playback)
990 */
991int audio_pcm_sw_write (SWVoiceOut *sw, void *buf, int size)
992{
993 int hwsamples, samples, isamp, osamp, wpos, live, dead, left, swlim, blck;
994 int ret = 0, pos = 0, total = 0;
995
996 if (!sw) {
997 return size;
998 }
999
1000 hwsamples = sw->hw->samples;
1001
1002 live = sw->total_hw_samples_mixed;
1003 if (audio_bug (AUDIO_FUNC, live < 0 || live > hwsamples)){
1004 dolog ("live=%d hw->samples=%d\n", live, hwsamples);
1005 return 0;
1006 }
1007
1008 if (live == hwsamples) {
1009#ifdef DEBUG_OUT
1010 dolog ("%s is full %d\n", sw->name, live);
1011#endif
1012 return 0;
1013 }
1014
1015 wpos = (sw->hw->rpos + live) % hwsamples;
1016 samples = size >> sw->info.shift;
1017
1018 dead = hwsamples - live;
1019 swlim = ((int64_t) dead << 32) / sw->ratio;
1020 swlim = audio_MIN (swlim, samples);
1021 if (swlim) {
1022#ifndef VBOX
1023 sw->conv (sw->buf, buf, swlim, &sw->vol);
1024#else
1025 sw->conv (sw->buf, buf, swlim, &sum_out_volume);
1026#endif
1027 }
1028
1029 while (swlim) {
1030 dead = hwsamples - live;
1031 left = hwsamples - wpos;
1032 blck = audio_MIN (dead, left);
1033 if (!blck) {
1034 break;
1035 }
1036 isamp = swlim;
1037 osamp = blck;
1038 st_rate_flow_mix (
1039 sw->rate,
1040 sw->buf + pos,
1041 sw->hw->mix_buf + wpos,
1042 &isamp,
1043 &osamp
1044 );
1045 ret += isamp;
1046 swlim -= isamp;
1047 pos += isamp;
1048 live += osamp;
1049 wpos = (wpos + osamp) % hwsamples;
1050 total += osamp;
1051 }
1052
1053 sw->total_hw_samples_mixed += total;
1054 sw->empty = sw->total_hw_samples_mixed == 0;
1055
1056#ifdef DEBUG_OUT
1057 dolog (
1058 "%s: write size %d ret %d total sw %d\n",
1059 SW_NAME (sw),
1060 size >> sw->info.shift,
1061 ret,
1062 sw->total_hw_samples_mixed
1063 );
1064#endif
1065
1066 return ret << sw->info.shift;
1067}
1068
1069#ifdef DEBUG_AUDIO
1070static void audio_pcm_print_info (const char *cap, struct audio_pcm_info *info)
1071{
1072 dolog ("%s: bits %d, sign %d, freq %d, nchan %d\n",
1073 cap, info->bits, info->sign, info->freq, info->nchannels);
1074}
1075#endif
1076
1077#define DAC
1078#include "audio_template.h"
1079#undef DAC
1080#include "audio_template.h"
1081
1082int AUD_write (SWVoiceOut *sw, void *buf, int size)
1083{
1084 int bytes;
1085
1086 if (!sw) {
1087 /* XXX: Consider options */
1088 return size;
1089 }
1090
1091 if (!sw->hw->enabled) {
1092 dolog ("Writing to disabled voice %s\n", SW_NAME (sw));
1093 return 0;
1094 }
1095
1096 bytes = sw->hw->pcm_ops->write (sw, buf, size);
1097 return bytes;
1098}
1099
1100int AUD_read (SWVoiceIn *sw, void *buf, int size)
1101{
1102 int bytes;
1103
1104 if (!sw) {
1105 /* XXX: Consider options */
1106 return size;
1107 }
1108
1109 if (!sw->hw->enabled) {
1110 dolog ("Reading from disabled voice %s\n", SW_NAME (sw));
1111 return 0;
1112 }
1113
1114 bytes = sw->hw->pcm_ops->read (sw, buf, size);
1115 return bytes;
1116}
1117
1118int AUD_get_buffer_size_out (SWVoiceOut *sw)
1119{
1120 return sw->hw->samples << sw->hw->info.shift;
1121}
1122
1123void AUD_set_active_out (SWVoiceOut *sw, int on)
1124{
1125 HWVoiceOut *hw;
1126
1127 if (!sw) {
1128 return;
1129 }
1130
1131 hw = sw->hw;
1132 if (sw->active != on) {
1133 SWVoiceOut *temp_sw;
1134 SWVoiceCap *sc;
1135
1136 if (on) {
1137 hw->pending_disable = 0;
1138 if (!hw->enabled) {
1139 hw->enabled = 1;
1140 hw->pcm_ops->ctl_out (hw, VOICE_ENABLE);
1141 }
1142 }
1143 else {
1144 if (hw->enabled) {
1145 int nb_active = 0;
1146
1147 for (temp_sw = hw->sw_head.lh_first; temp_sw;
1148 temp_sw = temp_sw->entries.le_next) {
1149 nb_active += temp_sw->active != 0;
1150 }
1151
1152 hw->pending_disable = nb_active == 1;
1153 }
1154 }
1155
1156 for (sc = hw->cap_head.lh_first; sc; sc = sc->entries.le_next) {
1157 sc->sw.active = hw->enabled;
1158 if (hw->enabled) {
1159 audio_capture_maybe_changed (sc->cap, 1);
1160 }
1161 }
1162 sw->active = on;
1163 }
1164}
1165
1166void AUD_set_active_in (SWVoiceIn *sw, int on)
1167{
1168 HWVoiceIn *hw;
1169
1170 if (!sw) {
1171 return;
1172 }
1173
1174 hw = sw->hw;
1175 if (sw->active != on) {
1176 SWVoiceIn *temp_sw;
1177
1178 if (on) {
1179 if (!hw->enabled) {
1180 hw->enabled = 1;
1181 hw->pcm_ops->ctl_in (hw, VOICE_ENABLE);
1182 }
1183 sw->total_hw_samples_acquired = hw->total_samples_captured;
1184 }
1185 else {
1186 if (hw->enabled) {
1187 int nb_active = 0;
1188
1189 for (temp_sw = hw->sw_head.lh_first; temp_sw;
1190 temp_sw = temp_sw->entries.le_next) {
1191 nb_active += temp_sw->active != 0;
1192 }
1193
1194 if (nb_active == 1) {
1195 hw->enabled = 0;
1196 hw->pcm_ops->ctl_in (hw, VOICE_DISABLE);
1197 }
1198 }
1199 }
1200 sw->active = on;
1201 }
1202}
1203
1204static int audio_get_avail (SWVoiceIn *sw)
1205{
1206 int live;
1207
1208 if (!sw) {
1209 return 0;
1210 }
1211
1212 live = sw->hw->total_samples_captured - sw->total_hw_samples_acquired;
1213 if (audio_bug (AUDIO_FUNC, live < 0 || live > sw->hw->samples)) {
1214 dolog ("live=%d sw->hw->samples=%d\n", live, sw->hw->samples);
1215 return 0;
1216 }
1217
1218 ldebug (
1219 "%s: get_avail live %d ret %lld\n",
1220 SW_NAME (sw),
1221 live, (((int64_t) live << 32) / sw->ratio) << sw->info.shift
1222 );
1223
1224 return (((int64_t) live << 32) / sw->ratio) << sw->info.shift;
1225}
1226
1227static int audio_get_free (SWVoiceOut *sw)
1228{
1229 int live, dead;
1230
1231 if (!sw) {
1232 return 0;
1233 }
1234
1235 live = sw->total_hw_samples_mixed;
1236
1237 if (audio_bug (AUDIO_FUNC, live < 0 || live > sw->hw->samples)) {
1238 dolog ("live=%d sw->hw->samples=%d\n", live, sw->hw->samples);
1239 return 0;
1240 }
1241
1242 dead = sw->hw->samples - live;
1243
1244#ifdef DEBUG_OUT
1245 dolog ("%s: get_free live %d dead %d ret %lld\n",
1246 SW_NAME (sw),
1247 live, dead, (((int64_t) dead << 32) / sw->ratio) << sw->info.shift);
1248#endif
1249
1250 return (((int64_t) dead << 32) / sw->ratio) << sw->info.shift;
1251}
1252
1253static void audio_capture_mix_and_clear (HWVoiceOut *hw, int rpos, int samples)
1254{
1255 int n;
1256
1257 if (hw->enabled) {
1258 SWVoiceCap *sc;
1259
1260 for (sc = hw->cap_head.lh_first; sc; sc = sc->entries.le_next) {
1261 SWVoiceOut *sw = &sc->sw;
1262 int rpos2 = rpos;
1263
1264 n = samples;
1265 while (n) {
1266 int till_end_of_hw = hw->samples - rpos2;
1267 int to_write = audio_MIN (till_end_of_hw, n);
1268 int bytes = to_write << hw->info.shift;
1269 int written;
1270
1271 sw->buf = hw->mix_buf + rpos2;
1272 written = audio_pcm_sw_write (sw, NULL, bytes);
1273 if (written - bytes) {
1274 dolog ("Could not mix %d bytes into a capture "
1275 "buffer, mixed %d\n",
1276 bytes, written);
1277 break;
1278 }
1279 n -= to_write;
1280 rpos2 = (rpos2 + to_write) % hw->samples;
1281 }
1282 }
1283 }
1284
1285 n = audio_MIN (samples, hw->samples - rpos);
1286 mixeng_sniff_and_clear (hw, hw->mix_buf + rpos, n);
1287 mixeng_sniff_and_clear (hw, hw->mix_buf, samples - n);
1288}
1289
1290static void audio_run_out (AudioState *s)
1291{
1292 HWVoiceOut *hw = NULL;
1293 SWVoiceOut *sw;
1294
1295 while ((hw = audio_pcm_hw_find_any_enabled_out (s, hw))) {
1296 int played;
1297 int live, free, nb_live, cleanup_required, prev_rpos;
1298
1299 live = audio_pcm_hw_get_live_out2 (hw, &nb_live);
1300 if (!nb_live) {
1301 live = 0;
1302 }
1303
1304 if (audio_bug (AUDIO_FUNC, live < 0 || live > hw->samples)) {
1305 dolog ("live=%d hw->samples=%d\n", live, hw->samples);
1306 continue;
1307 }
1308
1309 if (hw->pending_disable && !nb_live) {
1310 SWVoiceCap *sc;
1311#ifdef DEBUG_OUT
1312 dolog ("Disabling voice\n");
1313#endif
1314 hw->enabled = 0;
1315 hw->pending_disable = 0;
1316 hw->pcm_ops->ctl_out (hw, VOICE_DISABLE);
1317 for (sc = hw->cap_head.lh_first; sc; sc = sc->entries.le_next) {
1318 sc->sw.active = 0;
1319 audio_recalc_and_notify_capture (sc->cap);
1320 }
1321 continue;
1322 }
1323
1324 if (!live) {
1325 for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) {
1326 if (sw->active) {
1327 free = audio_get_free (sw);
1328 if (free > 0) {
1329 sw->callback.fn (sw->callback.opaque, free);
1330 }
1331 }
1332 }
1333 continue;
1334 }
1335
1336 prev_rpos = hw->rpos;
1337 played = hw->pcm_ops->run_out (hw);
1338 if (audio_bug (AUDIO_FUNC, hw->rpos >= hw->samples)) {
1339 dolog ("hw->rpos=%d hw->samples=%d played=%d\n",
1340 hw->rpos, hw->samples, played);
1341 hw->rpos = 0;
1342 }
1343
1344#ifdef DEBUG_OUT
1345 dolog ("played=%d\n", played);
1346#endif
1347
1348 if (played) {
1349 hw->ts_helper += played;
1350 audio_capture_mix_and_clear (hw, prev_rpos, played);
1351 }
1352
1353 cleanup_required = 0;
1354 for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) {
1355 if (!sw->active && sw->empty) {
1356 continue;
1357 }
1358
1359 if (audio_bug (AUDIO_FUNC, played > sw->total_hw_samples_mixed)) {
1360 dolog ("played=%d sw->total_hw_samples_mixed=%d\n",
1361 played, sw->total_hw_samples_mixed);
1362 played = sw->total_hw_samples_mixed;
1363 }
1364
1365 sw->total_hw_samples_mixed -= played;
1366
1367 if (!sw->total_hw_samples_mixed) {
1368 sw->empty = 1;
1369 cleanup_required |= !sw->active && !sw->callback.fn;
1370 }
1371
1372 if (sw->active) {
1373 free = audio_get_free (sw);
1374 if (free > 0) {
1375 sw->callback.fn (sw->callback.opaque, free);
1376 }
1377 }
1378 }
1379
1380 if (cleanup_required) {
1381 SWVoiceOut *sw1;
1382
1383 sw = hw->sw_head.lh_first;
1384 while (sw) {
1385 sw1 = sw->entries.le_next;
1386 if (!sw->active && !sw->callback.fn) {
1387#ifdef DEBUG_PLIVE
1388 dolog ("Finishing with old voice\n");
1389#endif
1390 audio_close_out (s, sw);
1391 }
1392 sw = sw1;
1393 }
1394 }
1395 }
1396}
1397
1398static void audio_run_in (AudioState *s)
1399{
1400 HWVoiceIn *hw = NULL;
1401
1402 while ((hw = audio_pcm_hw_find_any_enabled_in (s, hw))) {
1403 SWVoiceIn *sw;
1404 int captured, min;
1405
1406 captured = hw->pcm_ops->run_in (hw);
1407
1408 min = audio_pcm_hw_find_min_in (hw);
1409 hw->total_samples_captured += captured - min;
1410 hw->ts_helper += captured;
1411
1412 for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) {
1413 sw->total_hw_samples_acquired -= min;
1414
1415 if (sw->active) {
1416 int avail;
1417
1418 avail = audio_get_avail (sw);
1419 if (avail > 0) {
1420 sw->callback.fn (sw->callback.opaque, avail);
1421 }
1422 }
1423 }
1424 }
1425}
1426
1427static void audio_run_capture (AudioState *s)
1428{
1429 CaptureVoiceOut *cap;
1430
1431 for (cap = s->cap_head.lh_first; cap; cap = cap->entries.le_next) {
1432 int live, rpos, captured;
1433 HWVoiceOut *hw = &cap->hw;
1434 SWVoiceOut *sw;
1435
1436 captured = live = audio_pcm_hw_get_live_out (hw);
1437 rpos = hw->rpos;
1438 while (live) {
1439 int left = hw->samples - rpos;
1440 int to_capture = audio_MIN (live, left);
1441 st_sample_t *src;
1442 struct capture_callback *cb;
1443
1444 src = hw->mix_buf + rpos;
1445 hw->clip (cap->buf, src, to_capture);
1446 mixeng_sniff_and_clear (hw, src, to_capture);
1447
1448 for (cb = cap->cb_head.lh_first; cb; cb = cb->entries.le_next) {
1449 cb->ops.capture (cb->opaque, cap->buf,
1450 to_capture << hw->info.shift);
1451 }
1452 rpos = (rpos + to_capture) % hw->samples;
1453 live -= to_capture;
1454 }
1455 hw->rpos = rpos;
1456
1457 for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) {
1458 if (!sw->active && sw->empty) {
1459 continue;
1460 }
1461
1462 if (audio_bug (AUDIO_FUNC, captured > sw->total_hw_samples_mixed)) {
1463 dolog ("captured=%d sw->total_hw_samples_mixed=%d\n",
1464 captured, sw->total_hw_samples_mixed);
1465 captured = sw->total_hw_samples_mixed;
1466 }
1467
1468 sw->total_hw_samples_mixed -= captured;
1469 sw->empty = sw->total_hw_samples_mixed == 0;
1470 }
1471 }
1472}
1473
1474static void audio_timer (void *opaque)
1475{
1476 AudioState *s = opaque;
1477
1478 audio_run_out (s);
1479 audio_run_in (s);
1480 audio_run_capture (s);
1481
1482 TMTimerSet (s->ts, TMTimerGet (s->ts) + conf.period.ticks);
1483}
1484
1485static struct audio_option audio_options[] = {
1486 /* DAC */
1487 {"DAC_FIXED_SETTINGS", AUD_OPT_BOOL, &conf.fixed_out.enabled,
1488 "Use fixed settings for host DAC", NULL, 0},
1489
1490 {"DAC_FIXED_FREQ", AUD_OPT_INT, &conf.fixed_out.settings.freq,
1491 "Frequency for fixed host DAC", NULL, 0},
1492
1493 {"DAC_FIXED_FMT", AUD_OPT_FMT, &conf.fixed_out.settings.fmt,
1494 "Format for fixed host DAC", NULL, 0},
1495
1496 {"DAC_FIXED_CHANNELS", AUD_OPT_INT, &conf.fixed_out.settings.nchannels,
1497 "Number of channels for fixed DAC (1 - mono, 2 - stereo)", NULL, 0},
1498
1499 {"DAC_VOICES", AUD_OPT_INT, &conf.fixed_out.nb_voices,
1500 "Number of voices for DAC", NULL, 0},
1501
1502 /* ADC */
1503 {"ADC_FIXED_SETTINGS", AUD_OPT_BOOL, &conf.fixed_in.enabled,
1504 "Use fixed settings for host ADC", NULL, 0},
1505
1506 {"ADC_FIXED_FREQ", AUD_OPT_INT, &conf.fixed_in.settings.freq,
1507 "Frequency for fixed host ADC", NULL, 0},
1508
1509 {"ADC_FIXED_FMT", AUD_OPT_FMT, &conf.fixed_in.settings.fmt,
1510 "Format for fixed host ADC", NULL, 0},
1511
1512 {"ADC_FIXED_CHANNELS", AUD_OPT_INT, &conf.fixed_in.settings.nchannels,
1513 "Number of channels for fixed ADC (1 - mono, 2 - stereo)", NULL, 0},
1514
1515 {"ADC_VOICES", AUD_OPT_INT, &conf.fixed_in.nb_voices,
1516 "Number of voices for ADC", NULL, 0},
1517
1518 /* Misc */
1519 {"TIMER_PERIOD", AUD_OPT_INT, &conf.period.hz,
1520 "Timer period in HZ (0 - use lowest possible)", NULL, 0},
1521
1522 {"PLIVE", AUD_OPT_BOOL, &conf.plive,
1523 "(undocumented)", NULL, 0},
1524
1525 {NULL, 0, NULL, NULL, NULL, 0}
1526};
1527
1528static int audio_driver_init (AudioState *s, struct audio_driver *drv)
1529{
1530 if (drv->options) {
1531 audio_process_options (drv->name, drv->options);
1532 }
1533 s->drv_opaque = drv->init ();
1534
1535 if (s->drv_opaque) {
1536 audio_init_nb_voices_out (s, drv);
1537 audio_init_nb_voices_in (s, drv);
1538 s->drv = drv;
1539 return 0;
1540 }
1541 else {
1542 dolog ("Could not init `%s' audio driver\n", drv->name);
1543 return -1;
1544 }
1545}
1546
1547static void audio_vm_change_state_handler (void *opaque, int running)
1548{
1549 AudioState *s = opaque;
1550 HWVoiceOut *hwo = NULL;
1551 HWVoiceIn *hwi = NULL;
1552 int op = running ? VOICE_ENABLE : VOICE_DISABLE;
1553
1554 while ((hwo = audio_pcm_hw_find_any_enabled_out (s, hwo))) {
1555 hwo->pcm_ops->ctl_out (hwo, op);
1556 }
1557
1558 while ((hwi = audio_pcm_hw_find_any_enabled_in (s, hwi))) {
1559 hwi->pcm_ops->ctl_in (hwi, op);
1560 }
1561}
1562
1563static void audio_atexit (void)
1564{
1565 AudioState *s = &glob_audio_state;
1566 HWVoiceOut *hwo = NULL;
1567 HWVoiceIn *hwi = NULL;
1568
1569 /* VBox change: audio_pcm_hw_find_any_enabled_out => audio_pcm_hw_find_any_out */
1570 while ((hwo = audio_pcm_hw_find_any_out (s, hwo))) {
1571 SWVoiceCap *sc;
1572
1573 hwo->pcm_ops->ctl_out (hwo, VOICE_DISABLE);
1574 hwo->pcm_ops->fini_out (hwo);
1575
1576 for (sc = hwo->cap_head.lh_first; sc; sc = sc->entries.le_next) {
1577 CaptureVoiceOut *cap = sc->cap;
1578 struct capture_callback *cb;
1579
1580 for (cb = cap->cb_head.lh_first; cb; cb = cb->entries.le_next) {
1581 cb->ops.destroy (cb->opaque);
1582 }
1583 }
1584 }
1585
1586 /* VBox change: audio_pcm_hw_find_any_enabled_in => audio_pcm_hw_find_any_in */
1587 while ((hwi = audio_pcm_hw_find_any_in (s, hwi))) {
1588 hwi->pcm_ops->ctl_in (hwi, VOICE_DISABLE);
1589 hwi->pcm_ops->fini_in (hwi);
1590 }
1591
1592 if (s->drv) {
1593 s->drv->fini (s->drv_opaque);
1594 }
1595}
1596
1597void AUD_register_card (const char *name, QEMUSoundCard *card)
1598{
1599 AudioState *s = &glob_audio_state;
1600 card->audio = s;
1601 card->name = qemu_strdup (name);
1602 memset (&card->entries, 0, sizeof (card->entries));
1603 LIST_INSERT_HEAD (&s->card_head, card, entries);
1604}
1605
1606void AUD_remove_card (QEMUSoundCard *card)
1607{
1608 LIST_REMOVE (card, entries);
1609 card->audio = NULL;
1610 qemu_free (card->name);
1611}
1612
1613static void audio_timer_helper (PPDMDRVINS pDrvIns, PTMTIMER pTimer)
1614{
1615 AudioState *s = &glob_audio_state;
1616 audio_timer (s);
1617}
1618
1619static int AUD_init (PPDMDRVINS pDrvIns, const char *drvname)
1620{
1621 size_t i;
1622 int done = 0;
1623 AudioState *s = &glob_audio_state;
1624 int rc;
1625
1626 LIST_INIT (&s->hw_head_out);
1627 LIST_INIT (&s->hw_head_in);
1628 LIST_INIT (&s->cap_head);
1629
1630 rc = PDMDrvHlpTMTimerCreate (pDrvIns, TMCLOCK_VIRTUAL,
1631 audio_timer_helper, "Audio timer", &s->ts);
1632 if (RT_FAILURE (rc))
1633 return rc;
1634
1635 audio_process_options ("AUDIO", audio_options);
1636
1637 s->nb_hw_voices_out = conf.fixed_out.nb_voices;
1638 s->nb_hw_voices_in = conf.fixed_in.nb_voices;
1639
1640 if (s->nb_hw_voices_out <= 0) {
1641 dolog ("Bogus number of playback voices %d, setting to 1\n",
1642 s->nb_hw_voices_out);
1643 s->nb_hw_voices_out = 1;
1644 }
1645
1646 if (s->nb_hw_voices_in <= 0) {
1647 dolog ("Bogus number of capture voices %d, setting to 0\n",
1648 s->nb_hw_voices_in);
1649 s->nb_hw_voices_in = 0;
1650 }
1651
1652 LogRel(("Audio: Trying driver '%s'.\n", drvname));
1653
1654 if (drvname) {
1655 int found = 0;
1656
1657 for (i = 0; i < sizeof (drvtab) / sizeof (drvtab[0]); i++) {
1658 if (!strcmp (drvname, drvtab[i]->name)) {
1659 done = !audio_driver_init (s, drvtab[i]);
1660 found = 1;
1661 break;
1662 }
1663 }
1664
1665 if (!found) {
1666 dolog ("Unknown audio driver `%s'\n", drvname);
1667 }
1668 }
1669
1670 if (!done) {
1671 for (i = 0; !done && i < sizeof (drvtab) / sizeof (drvtab[0]); i++) {
1672 if (drvtab[i]->can_be_default) {
1673 LogRel(("Audio: Initialization of driver '%s' failed, trying '%s'.\n",
1674 drvname, drvtab[i]->name));
1675 drvname = drvtab[i]->name;
1676 done = !audio_driver_init (s, drvtab[i]);
1677 }
1678 }
1679 }
1680
1681 if (!done) {
1682 done = !audio_driver_init (s, &no_audio_driver);
1683 if (!done) {
1684 dolog ("Could not initialize audio subsystem\n");
1685 }
1686 else {
1687 LogRel(("Audio: Initialization of driver '%s' failed, using NULL driver.\n", drvname));
1688 dolog ("warning: Using timer based audio emulation\n");
1689 }
1690 }
1691
1692 if (done) {
1693 if (conf.period.hz <= 0) {
1694 if (conf.period.hz < 0) {
1695 dolog ("warning: Timer period is negative - %d "
1696 "treating as zero\n",
1697 conf.period.hz);
1698 }
1699 conf.period.ticks = 1;
1700 }
1701 else {
1702 conf.period.ticks = pDrvIns->pDrvHlp->pfnTMGetVirtualFreq (pDrvIns)
1703 / conf.period.hz;
1704 }
1705 }
1706 else {
1707 /* XXX */
1708 rc = TMTimerDestroy (s->ts);
1709 return rc;
1710 }
1711
1712 LIST_INIT (&s->card_head);
1713 TMTimerSet (s->ts, TMTimerGet (s->ts) + conf.period.ticks);
1714 return VINF_SUCCESS;
1715}
1716
1717int AUD_init_null(void)
1718{
1719 AudioState *s = &glob_audio_state;
1720
1721#ifdef VBOX
1722 if (s->drv)
1723 s->drv->fini (s->drv_opaque);
1724#endif
1725
1726 LogRel(("Audio: Using NULL audio driver\n"));
1727 return audio_driver_init (s, &no_audio_driver);
1728}
1729
1730CaptureVoiceOut *AUD_add_capture (
1731 AudioState *s,
1732 audsettings_t *as,
1733 struct audio_capture_ops *ops,
1734 void *cb_opaque
1735 )
1736{
1737 CaptureVoiceOut *cap;
1738 struct capture_callback *cb;
1739
1740 if (!s) {
1741 /* XXX suppress */
1742 s = &glob_audio_state;
1743 }
1744
1745 if (audio_validate_settings (as)) {
1746 dolog ("Invalid settings were passed when trying to add capture\n");
1747 audio_print_settings (as);
1748 goto err0;
1749 }
1750
1751 cb = audio_calloc (AUDIO_FUNC, 1, sizeof (*cb));
1752 if (!cb) {
1753 dolog ("Could not allocate capture callback information, size %u\n",
1754 sizeof (*cb));
1755 goto err0;
1756 }
1757 cb->ops = *ops;
1758 cb->opaque = cb_opaque;
1759
1760 cap = audio_pcm_capture_find_specific (s, as);
1761 if (cap) {
1762 LIST_INSERT_HEAD (&cap->cb_head, cb, entries);
1763 return cap;
1764 }
1765 else {
1766 HWVoiceOut *hw;
1767 CaptureVoiceOut *cap;
1768
1769 cap = audio_calloc (AUDIO_FUNC, 1, sizeof (*cap));
1770 if (!cap) {
1771 dolog ("Could not allocate capture voice, size %u\n",
1772 sizeof (*cap));
1773 goto err1;
1774 }
1775
1776 hw = &cap->hw;
1777 LIST_INIT (&hw->sw_head);
1778 LIST_INIT (&cap->cb_head);
1779
1780 /* XXX find a more elegant way */
1781 hw->samples = 4096 * 4;
1782 hw->mix_buf = audio_calloc (AUDIO_FUNC, hw->samples,
1783 sizeof (st_sample_t));
1784 if (!hw->mix_buf) {
1785 dolog ("Could not allocate capture mix buffer (%d samples)\n",
1786 hw->samples);
1787 goto err2;
1788 }
1789
1790 audio_pcm_init_info (&hw->info, as);
1791
1792 cap->buf = audio_calloc (AUDIO_FUNC, hw->samples, 1 << hw->info.shift);
1793 if (!cap->buf) {
1794 dolog ("Could not allocate capture buffer "
1795 "(%d samples, each %d bytes)\n",
1796 hw->samples, 1 << hw->info.shift);
1797 goto err3;
1798 }
1799
1800 hw->clip = mixeng_clip
1801 [hw->info.nchannels == 2]
1802 [hw->info.sign]
1803 [hw->info.swap_endianness]
1804 [audio_bits_to_index (hw->info.bits)];
1805
1806 LIST_INSERT_HEAD (&s->cap_head, cap, entries);
1807 LIST_INSERT_HEAD (&cap->cb_head, cb, entries);
1808
1809 hw = NULL;
1810 while ((hw = audio_pcm_hw_find_any_out (s, hw))) {
1811 audio_attach_capture (s, hw);
1812 }
1813 return cap;
1814
1815 err3:
1816 qemu_free (cap->hw.mix_buf);
1817 err2:
1818 qemu_free (cap);
1819 err1:
1820 qemu_free (cb);
1821 err0:
1822 return NULL;
1823 }
1824}
1825
1826void AUD_del_capture (CaptureVoiceOut *cap, void *cb_opaque)
1827{
1828 struct capture_callback *cb;
1829
1830 for (cb = cap->cb_head.lh_first; cb; cb = cb->entries.le_next) {
1831 if (cb->opaque == cb_opaque) {
1832 cb->ops.destroy (cb_opaque);
1833 LIST_REMOVE (cb, entries);
1834 qemu_free (cb);
1835
1836 if (!cap->cb_head.lh_first) {
1837 SWVoiceOut *sw = cap->hw.sw_head.lh_first, *sw1;
1838
1839 while (sw) {
1840 SWVoiceCap *sc = (SWVoiceCap *) sw;
1841#ifdef DEBUG_CAPTURE
1842 dolog ("freeing %s\n", sw->name);
1843#endif
1844
1845 sw1 = sw->entries.le_next;
1846 if (sw->rate) {
1847 st_rate_stop (sw->rate);
1848 sw->rate = NULL;
1849 }
1850 LIST_REMOVE (sw, entries);
1851 LIST_REMOVE (sc, entries);
1852 qemu_free (sc);
1853 sw = sw1;
1854 }
1855 LIST_REMOVE (cap, entries);
1856 qemu_free (cap);
1857 }
1858 return;
1859 }
1860 }
1861}
1862
1863void AUD_set_volume_out (SWVoiceOut *sw, int mute, uint8_t lvol, uint8_t rvol)
1864{
1865 if (sw)
1866 {
1867 sw->vol.mute = mute;
1868 sw->vol.l = (uint32_t)lvol * 0x808080; /* maximum is INT_MAX = 0x7fffffff */
1869 sw->vol.r = (uint32_t)rvol * 0x808080; /* maximum is INT_MAX = 0x7fffffff */
1870 }
1871}
1872
1873void AUD_set_volume (audmixerctl_t mt, int *mute, uint8_t *lvol, uint8_t *rvol)
1874{
1875 volume_t *vol = NULL;
1876 const char *name;
1877
1878 switch (mt)
1879 {
1880 case AUD_MIXER_VOLUME:
1881 name = "MASTER";
1882 vol = &master_out_volume;
1883 break;
1884 case AUD_MIXER_PCM:
1885 name = "PCM_OUT";
1886 vol = &pcm_out_volume;
1887 break;
1888 case AUD_MIXER_LINE_IN:
1889 name = "LINE_IN";
1890 vol = &pcm_in_volume;
1891 break;
1892 default:
1893 return;
1894
1895 }
1896
1897 if (vol)
1898 {
1899 uint32_t u32VolumeLeft = (uint32_t)*lvol;
1900 uint32_t u32VolumeRight = (uint32_t)*rvol;
1901 /* 0x00..0xff => 0x01..0x100 */
1902 if (u32VolumeLeft)
1903 u32VolumeLeft++;
1904 if (u32VolumeRight)
1905 u32VolumeRight++;
1906 vol->mute = *mute;
1907 vol->l = u32VolumeLeft * 0x800000; /* maximum is 0x80000000 */
1908 vol->r = u32VolumeRight * 0x800000; /* maximum is 0x80000000 */
1909 }
1910 sum_out_volume.mute = master_out_volume.mute || pcm_out_volume.mute;
1911 sum_out_volume.l = ASMMultU64ByU32DivByU32(master_out_volume.l, pcm_out_volume.l, 0x80000000U);
1912 sum_out_volume.r = ASMMultU64ByU32DivByU32(master_out_volume.r, pcm_out_volume.r, 0x80000000U);
1913}
1914
1915void AUD_set_record_source (audrecsource_t *ars, audrecsource_t *als)
1916{
1917 LogRel(("Audio: set_record_source ars=%d als=%d (not implemented)\n", *ars, *als));
1918}
1919
1920/**
1921 * Queries an interface to the driver.
1922 *
1923 * @returns Pointer to interface.
1924 * @returns NULL if the interface was not supported by the driver.
1925 * @param pInterface Pointer to this interface structure.
1926 * @param enmInterface The requested interface identification.
1927 * @thread Any thread.
1928 */
1929static DECLCALLBACK(void *) drvAudioQueryInterface(PPDMIBASE pInterface,
1930 PDMINTERFACE enmInterface)
1931{
1932 PPDMDRVINS pDrvIns = PDMIBASE_2_PDMDRV(pInterface);
1933 PDRVAUDIO pThis = PDMINS_2_DATA(pDrvIns, PDRVAUDIO);
1934 switch (enmInterface)
1935 {
1936 case PDMINTERFACE_BASE:
1937 return &pDrvIns->IBase;
1938 case PDMINTERFACE_AUDIO_CONNECTOR:
1939 return &pThis->IAudioConnector;
1940 default:
1941 return NULL;
1942 }
1943}
1944
1945/**
1946 * Power Off notification.
1947 *
1948 * @param pDrvIns The driver instance data.
1949 */
1950static DECLCALLBACK(void) drvAudioPowerOff(PPDMDRVINS pDrvIns)
1951{
1952 AudioState *s = &glob_audio_state;
1953 audio_vm_change_state_handler (s, 0);
1954}
1955
1956/**
1957 * Destruct a driver instance.
1958 *
1959 * Most VM resources are freed by the VM. This callback is provided so that any non-VM
1960 * resources can be freed correctly.
1961 *
1962 * @param pDrvIns The driver instance data.
1963 */
1964static DECLCALLBACK(void) drvAudioDestruct(PPDMDRVINS pDrvIns)
1965{
1966 LogFlow(("drvAUDIODestruct:\n"));
1967
1968 audio_atexit ();
1969}
1970
1971/**
1972 * Construct an AUDIO driver instance.
1973 *
1974 * @returns VBox status.
1975 * @param pDrvIns The driver instance data.
1976 * If the registration structure is needed, pDrvIns->pDrvReg points to it.
1977 * @param pCfgHandle Configuration node handle for the driver. Use this to obtain the configuration
1978 * of the driver instance. It's also found in pDrvIns->pCfgHandle, but like
1979 * iInstance it's expected to be used a bit in this function.
1980 */
1981static DECLCALLBACK(int) drvAudioConstruct(PPDMDRVINS pDrvIns, PCFGMNODE pCfgHandle)
1982{
1983 int rc;
1984 PDRVAUDIO pThis = PDMINS_2_DATA(pDrvIns, PDRVAUDIO);
1985 char *drvname;
1986
1987 LogFlow(("drvAUDIOConstruct:\n"));
1988 /*
1989 * Validate the config.
1990 */
1991 if (!CFGMR3AreValuesValid(pCfgHandle, "AudioDriver\0StreamName\0"))
1992 return VERR_PDM_DRVINS_UNKNOWN_CFG_VALUES;
1993
1994 /*
1995 * Init the static parts.
1996 */
1997 pThis->pDrvIns = pDrvIns;
1998 /* IBase */
1999 pDrvIns->IBase.pfnQueryInterface = drvAudioQueryInterface;
2000 /* IAudio */
2001 /* pThis->IAudioConnector.pfn; */
2002
2003 glob_audio_state.pDrvIns = pDrvIns;
2004
2005 rc = CFGMR3QueryStringAlloc (pCfgHandle, "AudioDriver", &drvname);
2006 if (RT_FAILURE (rc))
2007 return rc;
2008
2009 rc = CFGMR3QueryStringAlloc (pCfgHandle, "StreamName", &audio_streamname);
2010 if (RT_FAILURE (rc))
2011 audio_streamname = NULL;
2012
2013 rc = AUD_init (pDrvIns, drvname);
2014 if (RT_FAILURE (rc))
2015 return rc;
2016
2017 MMR3HeapFree (drvname);
2018
2019 return VINF_SUCCESS;
2020}
2021
2022/**
2023 * Suspend notification.
2024 *
2025 * @returns VBox status.
2026 * @param pDrvIns The driver instance data.
2027 */
2028static DECLCALLBACK(void) drvAudioSuspend(PPDMDRVINS pDrvIns)
2029{
2030 AudioState *s = &glob_audio_state;
2031 audio_vm_change_state_handler (s, 0);
2032}
2033
2034/**
2035 * Resume notification.
2036 *
2037 * @returns VBox status.
2038 * @param pDrvIns The driver instance data.
2039 */
2040static DECLCALLBACK(void) audioResume(PPDMDRVINS pDrvIns)
2041{
2042 AudioState *s = &glob_audio_state;
2043 audio_vm_change_state_handler (s, 1);
2044}
2045
2046/**
2047 * Audio driver registration record.
2048 */
2049const PDMDRVREG g_DrvAUDIO =
2050{
2051 /* u32Version */
2052 PDM_DRVREG_VERSION,
2053 /* szDriverName */
2054 "AUDIO",
2055 /* pszDescription */
2056 "AUDIO Driver",
2057 /* fFlags */
2058 PDM_DRVREG_FLAGS_HOST_BITS_DEFAULT,
2059 /* fClass. */
2060 PDM_DRVREG_CLASS_AUDIO,
2061 /* cMaxInstances */
2062 1,
2063 /* cbInstance */
2064 sizeof(DRVAUDIO),
2065 /* pfnConstruct */
2066 drvAudioConstruct,
2067 /* pfnDestruct */
2068 drvAudioDestruct,
2069 /* pfnIOCtl */
2070 NULL,
2071 /* pfnPowerOn */
2072 NULL,
2073 /* pfnReset */
2074 NULL,
2075 /* pfnSuspend */
2076 drvAudioSuspend,
2077 /* pfnResume */
2078 audioResume,
2079 /* pfnDetach */
2080 NULL,
2081 /* pfnPowerOff */
2082 drvAudioPowerOff
2083};
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