1 /*
2 * QEMU Audio subsystem
3 *
4 * Copyright (c) 2007-2008 The Android Open Source Project
5 * Copyright (c) 2003-2005 Vassili Karpov (malc)
6 *
7 * Permission is hereby granted, free of charge, to any person obtaining a copy
8 * of this software and associated documentation files (the "Software"), to deal
9 * in the Software without restriction, including without limitation the rights
10 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
11 * copies of the Software, and to permit persons to whom the Software is
12 * furnished to do so, subject to the following conditions:
13 *
14 * The above copyright notice and this permission notice shall be included in
15 * all copies or substantial portions of the Software.
16 *
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
20 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
21 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
22 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
23 * THE SOFTWARE.
24 */
25 #include "hw/hw.h"
26 #include "audio.h"
27 #include "monitor/monitor.h"
28 #include "qemu/timer.h"
29 #include "sysemu/sysemu.h"
30
31 #define AUDIO_CAP "audio"
32 #include "audio_int.h"
33 #include "android/utils/system.h"
34 #include "android/qemu-debug.h"
35 #include "android/android.h"
36
37 /* #define DEBUG_PLIVE */
38 /* #define DEBUG_LIVE */
39 /* #define DEBUG_OUT */
40 /* #define DEBUG_CAPTURE */
41
42 #define SW_NAME(sw) (sw)->name ? (sw)->name : "unknown"
43
44 static struct audio_driver *drvtab[] = {
45 #ifdef CONFIG_PULSEAUDIO
46 &pa_audio_driver,
47 #endif
48 #ifdef CONFIG_ESD
49 &esd_audio_driver,
50 #endif
51 #ifdef CONFIG_ALSA
52 &alsa_audio_driver,
53 #endif
54 #ifdef CONFIG_COREAUDIO
55 &coreaudio_audio_driver,
56 #endif
57 #ifdef CONFIG_DSOUND
58 &dsound_audio_driver,
59 #endif
60 #ifdef CONFIG_FMOD
61 &fmod_audio_driver,
62 #endif
63 #ifdef CONFIG_WINAUDIO
64 &win_audio_driver,
65 #endif
66 #ifdef CONFIG_OSS
67 &oss_audio_driver,
68 #endif
69 &no_audio_driver,
70 #if 0 /* disabled WAV audio for now - until we find a user-friendly way to use it */
71 &wav_audio_driver
72 #endif
73 };
74
75
76 int
audio_get_backend_count(int is_input)77 audio_get_backend_count( int is_input )
78 {
79 int nn, count = 0;
80
81 for (nn = 0; nn < sizeof(drvtab)/sizeof(drvtab[0]); nn++)
82 {
83 if (is_input) {
84 if ( drvtab[nn]->max_voices_in > 0 )
85 count += 1;
86 } else {
87 if ( drvtab[nn]->max_voices_out > 0 )
88 count += 1;
89 }
90 }
91 return count;
92 }
93
94 const char*
audio_get_backend_name(int is_input,int index,const char ** pinfo)95 audio_get_backend_name( int is_input, int index, const char* *pinfo )
96 {
97 int nn;
98
99 index += 1;
100 for (nn = 0; nn < sizeof(drvtab)/sizeof(drvtab[0]); nn++)
101 {
102 if (is_input) {
103 if ( drvtab[nn]->max_voices_in > 0 ) {
104 if ( --index == 0 ) {
105 *pinfo = drvtab[nn]->descr;
106 return drvtab[nn]->name;
107 }
108 }
109 } else {
110 if ( drvtab[nn]->max_voices_out > 0 ) {
111 if ( --index == 0 ) {
112 *pinfo = drvtab[nn]->descr;
113 return drvtab[nn]->name;
114 }
115 }
116 }
117 }
118 *pinfo = NULL;
119 return NULL;
120 }
121
122
123 int
audio_check_backend_name(int is_input,const char * name)124 audio_check_backend_name( int is_input, const char* name )
125 {
126 int nn;
127
128 for (nn = 0; nn < sizeof(drvtab)/sizeof(drvtab[0]); nn++)
129 {
130 if ( !strcmp(drvtab[nn]->name, name) ) {
131 if (is_input) {
132 if (drvtab[nn]->max_voices_in > 0)
133 return 1;
134 } else {
135 if (drvtab[nn]->max_voices_out > 0)
136 return 1;
137 }
138 break;
139 }
140 }
141 return 0;
142 }
143
144
145 struct fixed_settings {
146 int enabled;
147 int nb_voices;
148 int greedy;
149 struct audsettings settings;
150 };
151
152 static struct {
153 struct fixed_settings fixed_out;
154 struct fixed_settings fixed_in;
155 union {
156 int hertz;
157 int64_t ticks;
158 } period;
159 int plive;
160 int log_to_monitor;
161 int try_poll_in;
162 int try_poll_out;
163 } conf = {
164 .fixed_out = { /* DAC fixed settings */
165 .enabled = 1,
166 .nb_voices = 1,
167 .greedy = 1,
168 .settings = {
169 .freq = 44100,
170 .nchannels = 2,
171 .fmt = AUD_FMT_S16,
172 .endianness = AUDIO_HOST_ENDIANNESS,
173 }
174 },
175
176 .fixed_in = { /* ADC fixed settings */
177 .enabled = 1,
178 .nb_voices = 1,
179 .greedy = 1,
180 .settings = {
181 .freq = 44100,
182 .nchannels = 2,
183 .fmt = AUD_FMT_S16,
184 .endianness = AUDIO_HOST_ENDIANNESS,
185 }
186 },
187
188 .period = { .hertz = 250 },
189 .plive = 0,
190 .log_to_monitor = 0,
191 .try_poll_in = 1,
192 .try_poll_out = 1,
193 };
194
195 static AudioState glob_audio_state;
196
197 struct mixeng_volume nominal_volume = {
198 .mute = 0,
199 #ifdef FLOAT_MIXENG
200 .r = 1.0,
201 .l = 1.0,
202 #else
203 .r = 1ULL << 32,
204 .l = 1ULL << 32,
205 #endif
206 };
207
208 #ifdef AUDIO_IS_FLAWLESS_AND_NO_CHECKS_ARE_REQURIED
209 #error No its not
210 #else
211 static void audio_print_options (const char *prefix,
212 struct audio_option *opt);
213
audio_bug(const char * funcname,int cond)214 int audio_bug (const char *funcname, int cond)
215 {
216 if (cond) {
217 static int shown;
218
219 AUD_log (NULL, "A bug was just triggered in %s\n", funcname);
220 if (!shown) {
221 struct audio_driver *d;
222
223 shown = 1;
224 AUD_log (NULL, "Save all your work and restart without audio\n");
225 AUD_log (NULL, "Please send bug report to av1474@comtv.ru\n");
226 AUD_log (NULL, "I am sorry\n");
227 d = glob_audio_state.drv;
228 if (d) {
229 audio_print_options (d->name, d->options);
230 }
231 }
232 AUD_log (NULL, "Context:\n");
233
234 #if defined AUDIO_BREAKPOINT_ON_BUG
235 # if defined __i386__
236 # if defined __GNUC__
237 __asm__ ("int3");
238 # elif defined _MSC_VER
239 _asm _emit 0xcc;
240 # else
241 abort ();
242 # endif
243 # else
244 abort ();
245 # endif
246 #endif
247 }
248
249 return cond;
250 }
251 #endif
252
audio_bits_to_index(int bits)253 static inline int audio_bits_to_index (int bits)
254 {
255 switch (bits) {
256 case 8:
257 return 0;
258
259 case 16:
260 return 1;
261
262 case 32:
263 return 2;
264
265 default:
266 audio_bug ("bits_to_index", 1);
267 AUD_log (NULL, "invalid bits %d\n", bits);
268 return 0;
269 }
270 }
271
audio_calloc(const char * funcname,int nmemb,size_t size)272 void *audio_calloc (const char *funcname, int nmemb, size_t size)
273 {
274 int cond;
275 size_t len;
276
277 len = nmemb * size;
278 cond = !nmemb || !size;
279 cond |= nmemb < 0;
280 cond |= len < size;
281
282 if (audio_bug ("audio_calloc", cond)) {
283 AUD_log (NULL, "%s passed invalid arguments to audio_calloc\n",
284 funcname);
285 AUD_log (NULL, "nmemb=%d size=%zu (len=%zu)\n", nmemb, size, len);
286 return NULL;
287 }
288
289 return g_malloc0 (len);
290 }
291
audio_alloc_prefix(const char * s)292 static char *audio_alloc_prefix (const char *s)
293 {
294 const char qemu_prefix[] = "QEMU_";
295 size_t len, i;
296 char *r, *u;
297
298 if (!s) {
299 return NULL;
300 }
301
302 len = strlen (s);
303 r = g_malloc (len + sizeof (qemu_prefix));
304
305 u = r + sizeof (qemu_prefix) - 1;
306
307 pstrcpy (r, len + sizeof (qemu_prefix), qemu_prefix);
308 pstrcat (r, len + sizeof (qemu_prefix), s);
309
310 for (i = 0; i < len; ++i) {
311 u[i] = qemu_toupper(u[i]);
312 }
313
314 return r;
315 }
316
audio_audfmt_to_string(audfmt_e fmt)317 static const char *audio_audfmt_to_string (audfmt_e fmt)
318 {
319 switch (fmt) {
320 case AUD_FMT_U8:
321 return "U8";
322
323 case AUD_FMT_U16:
324 return "U16";
325
326 case AUD_FMT_S8:
327 return "S8";
328
329 case AUD_FMT_S16:
330 return "S16";
331
332 case AUD_FMT_U32:
333 return "U32";
334
335 case AUD_FMT_S32:
336 return "S32";
337 }
338
339 dolog ("Bogus audfmt %d returning S16\n", fmt);
340 return "S16";
341 }
342
audio_string_to_audfmt(const char * s,audfmt_e defval,int * defaultp)343 static audfmt_e audio_string_to_audfmt (const char *s, audfmt_e defval,
344 int *defaultp)
345 {
346 if (!strcasecmp (s, "u8")) {
347 *defaultp = 0;
348 return AUD_FMT_U8;
349 }
350 else if (!strcasecmp (s, "u16")) {
351 *defaultp = 0;
352 return AUD_FMT_U16;
353 }
354 else if (!strcasecmp (s, "u32")) {
355 *defaultp = 0;
356 return AUD_FMT_U32;
357 }
358 else if (!strcasecmp (s, "s8")) {
359 *defaultp = 0;
360 return AUD_FMT_S8;
361 }
362 else if (!strcasecmp (s, "s16")) {
363 *defaultp = 0;
364 return AUD_FMT_S16;
365 }
366 else if (!strcasecmp (s, "s32")) {
367 *defaultp = 0;
368 return AUD_FMT_S32;
369 }
370 else {
371 dolog ("Bogus audio format `%s' using %s\n",
372 s, audio_audfmt_to_string (defval));
373 *defaultp = 1;
374 return defval;
375 }
376 }
377
audio_get_conf_fmt(const char * envname,audfmt_e defval,int * defaultp)378 static audfmt_e audio_get_conf_fmt (const char *envname,
379 audfmt_e defval,
380 int *defaultp)
381 {
382 const char *var = getenv (envname);
383 if (!var) {
384 *defaultp = 1;
385 return defval;
386 }
387 return audio_string_to_audfmt (var, defval, defaultp);
388 }
389
audio_get_conf_int(const char * key,int defval,int * defaultp)390 static int audio_get_conf_int (const char *key, int defval, int *defaultp)
391 {
392 int val;
393 char *strval;
394
395 strval = getenv (key);
396 if (strval) {
397 *defaultp = 0;
398 val = atoi (strval);
399 return val;
400 }
401 else {
402 *defaultp = 1;
403 return defval;
404 }
405 }
406
audio_get_conf_str(const char * key,const char * defval,int * defaultp)407 static const char *audio_get_conf_str (const char *key,
408 const char *defval,
409 int *defaultp)
410 {
411 const char *val = getenv (key);
412 if (!val) {
413 *defaultp = 1;
414 return defval;
415 }
416 else {
417 *defaultp = 0;
418 return val;
419 }
420 }
421
422 /* defined in android_sdl.c */
423 extern void dprintn(const char* fmt, ...);
424 extern void dprintnv(const char* fmt, va_list args);
425
AUD_vlog(const char * cap,const char * fmt,va_list ap)426 void AUD_vlog (const char *cap, const char *fmt, va_list ap)
427 {
428 if (conf.log_to_monitor) {
429 if (cap) {
430 monitor_printf(cur_mon, "%s: ", cap);
431 }
432
433 monitor_vprintf(cur_mon, fmt, ap);
434 }
435 else {
436 if (!VERBOSE_CHECK(audio))
437 return;
438
439 if (cap) {
440 dprintn("%s: ", cap);
441 }
442
443 dprintnv(fmt, ap);
444 }
445 }
446
AUD_log(const char * cap,const char * fmt,...)447 void AUD_log (const char *cap, const char *fmt, ...)
448 {
449 va_list ap;
450
451 va_start (ap, fmt);
452 AUD_vlog (cap, fmt, ap);
453 va_end (ap);
454 }
455
audio_print_options(const char * prefix,struct audio_option * opt)456 static void audio_print_options (const char *prefix,
457 struct audio_option *opt)
458 {
459 char *uprefix;
460
461 if (!prefix) {
462 dolog ("No prefix specified\n");
463 return;
464 }
465
466 if (!opt) {
467 dolog ("No options\n");
468 return;
469 }
470
471 uprefix = audio_alloc_prefix (prefix);
472
473 for (; opt->name; opt++) {
474 const char *state = "default";
475 printf (" %s_%s: ", uprefix, opt->name);
476
477 if (opt->overriddenp && *opt->overriddenp) {
478 state = "current";
479 }
480
481 switch (opt->tag) {
482 case AUD_OPT_BOOL:
483 {
484 int *intp = opt->valp;
485 printf ("boolean, %s = %d\n", state, *intp ? 1 : 0);
486 }
487 break;
488
489 case AUD_OPT_INT:
490 {
491 int *intp = opt->valp;
492 printf ("integer, %s = %d\n", state, *intp);
493 }
494 break;
495
496 case AUD_OPT_FMT:
497 {
498 audfmt_e *fmtp = opt->valp;
499 printf (
500 "format, %s = %s, (one of: U8 S8 U16 S16 U32 S32)\n",
501 state,
502 audio_audfmt_to_string (*fmtp)
503 );
504 }
505 break;
506
507 case AUD_OPT_STR:
508 {
509 const char **strp = opt->valp;
510 printf ("string, %s = %s\n",
511 state,
512 *strp ? *strp : "(not set)");
513 }
514 break;
515
516 default:
517 printf ("???\n");
518 dolog ("Bad value tag for option %s_%s %d\n",
519 uprefix, opt->name, opt->tag);
520 break;
521 }
522 printf (" %s\n", opt->descr);
523 }
524
525 g_free (uprefix);
526 }
527
audio_process_options(const char * prefix,struct audio_option * opt)528 static void audio_process_options (const char *prefix,
529 struct audio_option *opt)
530 {
531 char *optname;
532 const char qemu_prefix[] = "QEMU_";
533 size_t preflen, optlen;
534
535 if (audio_bug (AUDIO_FUNC, !prefix)) {
536 dolog ("prefix = NULL\n");
537 return;
538 }
539
540 if (audio_bug (AUDIO_FUNC, !opt)) {
541 dolog ("opt = NULL\n");
542 return;
543 }
544
545 preflen = strlen (prefix);
546
547 for (; opt->name; opt++) {
548 size_t len, i;
549 int def;
550
551 if (!opt->valp) {
552 dolog ("Option value pointer for `%s' is not set\n",
553 opt->name);
554 continue;
555 }
556
557 len = strlen (opt->name);
558 /* len of opt->name + len of prefix + size of qemu_prefix
559 * (includes trailing zero) + zero + underscore (on behalf of
560 * sizeof) */
561 optlen = len + preflen + sizeof (qemu_prefix) + 1;
562 optname = g_malloc (optlen);
563
564 pstrcpy (optname, optlen, qemu_prefix);
565
566 /* copy while upper-casing, including trailing zero */
567 for (i = 0; i <= preflen; ++i) {
568 optname[i + sizeof (qemu_prefix) - 1] = qemu_toupper(prefix[i]);
569 }
570 pstrcat (optname, optlen, "_");
571 pstrcat (optname, optlen, opt->name);
572
573 def = 1;
574 switch (opt->tag) {
575 case AUD_OPT_BOOL:
576 case AUD_OPT_INT:
577 {
578 int *intp = opt->valp;
579 *intp = audio_get_conf_int (optname, *intp, &def);
580 }
581 break;
582
583 case AUD_OPT_FMT:
584 {
585 audfmt_e *fmtp = opt->valp;
586 *fmtp = audio_get_conf_fmt (optname, *fmtp, &def);
587 }
588 break;
589
590 case AUD_OPT_STR:
591 {
592 const char **strp = opt->valp;
593 *strp = audio_get_conf_str (optname, *strp, &def);
594 }
595 break;
596
597 default:
598 dolog ("Bad value tag for option `%s' - %d\n",
599 optname, opt->tag);
600 break;
601 }
602
603 if (!opt->overriddenp) {
604 opt->overriddenp = &opt->overridden;
605 }
606 *opt->overriddenp = !def;
607 g_free (optname);
608 }
609 }
610
audio_print_settings(struct audsettings * as)611 static void audio_print_settings (struct audsettings *as)
612 {
613 dolog ("frequency=%d nchannels=%d fmt=", as->freq, as->nchannels);
614
615 switch (as->fmt) {
616 case AUD_FMT_S8:
617 AUD_log (NULL, "S8");
618 break;
619 case AUD_FMT_U8:
620 AUD_log (NULL, "U8");
621 break;
622 case AUD_FMT_S16:
623 AUD_log (NULL, "S16");
624 break;
625 case AUD_FMT_U16:
626 AUD_log (NULL, "U16");
627 break;
628 case AUD_FMT_S32:
629 AUD_log (NULL, "S32");
630 break;
631 case AUD_FMT_U32:
632 AUD_log (NULL, "U32");
633 break;
634 default:
635 AUD_log (NULL, "invalid(%d)", as->fmt);
636 break;
637 }
638
639 AUD_log (NULL, " endianness=");
640 switch (as->endianness) {
641 case 0:
642 AUD_log (NULL, "little");
643 break;
644 case 1:
645 AUD_log (NULL, "big");
646 break;
647 default:
648 AUD_log (NULL, "invalid");
649 break;
650 }
651 AUD_log (NULL, "\n");
652 }
653
audio_validate_settings(struct audsettings * as)654 static int audio_validate_settings (struct audsettings *as)
655 {
656 int invalid;
657
658 invalid = as->nchannels != 1 && as->nchannels != 2;
659 invalid |= as->endianness != 0 && as->endianness != 1;
660
661 switch (as->fmt) {
662 case AUD_FMT_S8:
663 case AUD_FMT_U8:
664 case AUD_FMT_S16:
665 case AUD_FMT_U16:
666 case AUD_FMT_S32:
667 case AUD_FMT_U32:
668 break;
669 default:
670 invalid = 1;
671 break;
672 }
673
674 invalid |= as->freq <= 0;
675 return invalid ? -1 : 0;
676 }
677
audio_pcm_info_eq(struct audio_pcm_info * info,struct audsettings * as)678 static int audio_pcm_info_eq (struct audio_pcm_info *info, struct audsettings *as)
679 {
680 int bits = 8, sign = 0;
681
682 switch (as->fmt) {
683 case AUD_FMT_S8:
684 sign = 1;
685 case AUD_FMT_U8:
686 break;
687
688 case AUD_FMT_S16:
689 sign = 1;
690 case AUD_FMT_U16:
691 bits = 16;
692 break;
693
694 case AUD_FMT_S32:
695 sign = 1;
696 case AUD_FMT_U32:
697 bits = 32;
698 break;
699 }
700 return info->freq == as->freq
701 && info->nchannels == as->nchannels
702 && info->sign == sign
703 && info->bits == bits
704 && info->swap_endianness == (as->endianness != AUDIO_HOST_ENDIANNESS);
705 }
706
audio_pcm_init_info(struct audio_pcm_info * info,struct audsettings * as)707 void audio_pcm_init_info (struct audio_pcm_info *info, struct audsettings *as)
708 {
709 int bits = 8, sign = 0, shift = 0;
710
711 switch (as->fmt) {
712 case AUD_FMT_S8:
713 sign = 1;
714 case AUD_FMT_U8:
715 break;
716
717 case AUD_FMT_S16:
718 sign = 1;
719 case AUD_FMT_U16:
720 bits = 16;
721 shift = 1;
722 break;
723
724 case AUD_FMT_S32:
725 sign = 1;
726 case AUD_FMT_U32:
727 bits = 32;
728 shift = 2;
729 break;
730 }
731
732 info->freq = as->freq;
733 info->bits = bits;
734 info->sign = sign;
735 info->nchannels = as->nchannels;
736 info->shift = (as->nchannels == 2) + shift;
737 info->align = (1 << info->shift) - 1;
738 info->bytes_per_second = info->freq << info->shift;
739 info->swap_endianness = (as->endianness != AUDIO_HOST_ENDIANNESS);
740 }
741
audio_pcm_info_clear_buf(struct audio_pcm_info * info,void * buf,int len)742 void audio_pcm_info_clear_buf (struct audio_pcm_info *info, void *buf, int len)
743 {
744 if (!len) {
745 return;
746 }
747
748 if (info->sign) {
749 memset (buf, 0x00, len << info->shift);
750 }
751 else {
752 switch (info->bits) {
753 case 8:
754 memset (buf, 0x80, len << info->shift);
755 break;
756
757 case 16:
758 {
759 int i;
760 uint16_t *p = buf;
761 int shift = info->nchannels - 1;
762 short s = INT16_MAX;
763
764 if (info->swap_endianness) {
765 s = bswap16 (s);
766 }
767
768 for (i = 0; i < len << shift; i++) {
769 p[i] = s;
770 }
771 }
772 break;
773
774 case 32:
775 {
776 int i;
777 uint32_t *p = buf;
778 int shift = info->nchannels - 1;
779 int32_t s = INT32_MAX;
780
781 if (info->swap_endianness) {
782 s = bswap32 (s);
783 }
784
785 for (i = 0; i < len << shift; i++) {
786 p[i] = s;
787 }
788 }
789 break;
790
791 default:
792 AUD_log (NULL, "audio_pcm_info_clear_buf: invalid bits %d\n",
793 info->bits);
794 break;
795 }
796 }
797 }
798
799 /*
800 * Capture
801 */
noop_conv(struct st_sample * dst,const void * src,int samples,struct mixeng_volume * vol)802 static void noop_conv (struct st_sample *dst, const void *src,
803 int samples, struct mixeng_volume *vol)
804 {
805 (void) src;
806 (void) dst;
807 (void) samples;
808 (void) vol;
809 }
810
audio_pcm_capture_find_specific(struct audsettings * as)811 static CaptureVoiceOut *audio_pcm_capture_find_specific (
812 struct audsettings *as
813 )
814 {
815 CaptureVoiceOut *cap;
816 AudioState *s = &glob_audio_state;
817
818 for (cap = s->cap_head.lh_first; cap; cap = cap->entries.le_next) {
819 if (audio_pcm_info_eq (&cap->hw.info, as)) {
820 return cap;
821 }
822 }
823 return NULL;
824 }
825
audio_notify_capture(CaptureVoiceOut * cap,audcnotification_e cmd)826 static void audio_notify_capture (CaptureVoiceOut *cap, audcnotification_e cmd)
827 {
828 struct capture_callback *cb;
829
830 #ifdef DEBUG_CAPTURE
831 dolog ("notification %d sent\n", cmd);
832 #endif
833 for (cb = cap->cb_head.lh_first; cb; cb = cb->entries.le_next) {
834 cb->ops.notify (cb->opaque, cmd);
835 }
836 }
837
audio_capture_maybe_changed(CaptureVoiceOut * cap,int enabled)838 static void audio_capture_maybe_changed (CaptureVoiceOut *cap, int enabled)
839 {
840 if (cap->hw.enabled != enabled) {
841 audcnotification_e cmd;
842 cap->hw.enabled = enabled;
843 cmd = enabled ? AUD_CNOTIFY_ENABLE : AUD_CNOTIFY_DISABLE;
844 audio_notify_capture (cap, cmd);
845 }
846 }
847
audio_recalc_and_notify_capture(CaptureVoiceOut * cap)848 static void audio_recalc_and_notify_capture (CaptureVoiceOut *cap)
849 {
850 HWVoiceOut *hw = &cap->hw;
851 SWVoiceOut *sw;
852 int enabled = 0;
853
854 for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) {
855 if (sw->active) {
856 enabled = 1;
857 break;
858 }
859 }
860 audio_capture_maybe_changed (cap, enabled);
861 }
862
audio_detach_capture(HWVoiceOut * hw)863 static void audio_detach_capture (HWVoiceOut *hw)
864 {
865 SWVoiceCap *sc = hw->cap_head.lh_first;
866
867 while (sc) {
868 SWVoiceCap *sc1 = sc->entries.le_next;
869 SWVoiceOut *sw = &sc->sw;
870 CaptureVoiceOut *cap = sc->cap;
871 int was_active = sw->active;
872
873 if (sw->rate) {
874 st_rate_stop (sw->rate);
875 sw->rate = NULL;
876 }
877
878 QLIST_REMOVE (sw, entries);
879 QLIST_REMOVE (sc, entries);
880 g_free (sc);
881 if (was_active) {
882 /* We have removed soft voice from the capture:
883 this might have changed the overall status of the capture
884 since this might have been the only active voice */
885 audio_recalc_and_notify_capture (cap);
886 }
887 sc = sc1;
888 }
889 }
890
audio_attach_capture(HWVoiceOut * hw)891 static int audio_attach_capture (HWVoiceOut *hw)
892 {
893 AudioState *s = &glob_audio_state;
894 CaptureVoiceOut *cap;
895
896 audio_detach_capture (hw);
897 for (cap = s->cap_head.lh_first; cap; cap = cap->entries.le_next) {
898 SWVoiceCap *sc;
899 SWVoiceOut *sw;
900 HWVoiceOut *hw_cap = &cap->hw;
901
902 sc = audio_calloc (AUDIO_FUNC, 1, sizeof (*sc));
903 if (!sc) {
904 dolog ("Could not allocate soft capture voice (%zu bytes)\n",
905 sizeof (*sc));
906 return -1;
907 }
908
909 sc->cap = cap;
910 sw = &sc->sw;
911 sw->hw = hw_cap;
912 sw->info = hw->info;
913 sw->empty = 1;
914 sw->active = hw->enabled;
915 sw->conv = noop_conv;
916 sw->ratio = ((int64_t) hw_cap->info.freq << 32) / sw->info.freq;
917 sw->rate = st_rate_start (sw->info.freq, hw_cap->info.freq);
918 if (!sw->rate) {
919 dolog ("Could not start rate conversion for `%s'\n", SW_NAME (sw));
920 g_free (sw);
921 return -1;
922 }
923 QLIST_INSERT_HEAD (&hw_cap->sw_head, sw, entries);
924 QLIST_INSERT_HEAD (&hw->cap_head, sc, entries);
925 #ifdef DEBUG_CAPTURE
926 asprintf (&sw->name, "for %p %d,%d,%d",
927 hw, sw->info.freq, sw->info.bits, sw->info.nchannels);
928 dolog ("Added %s active = %d\n", sw->name, sw->active);
929 #endif
930 if (sw->active) {
931 audio_capture_maybe_changed (cap, 1);
932 }
933 }
934 return 0;
935 }
936
937 /*
938 * Hard voice (capture)
939 */
audio_pcm_hw_find_min_in(HWVoiceIn * hw)940 static int audio_pcm_hw_find_min_in (HWVoiceIn *hw)
941 {
942 SWVoiceIn *sw;
943 int m = hw->total_samples_captured;
944
945 for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) {
946 if (sw->active) {
947 m = audio_MIN (m, sw->total_hw_samples_acquired);
948 }
949 }
950 return m;
951 }
952
audio_pcm_hw_get_live_in(HWVoiceIn * hw)953 int audio_pcm_hw_get_live_in (HWVoiceIn *hw)
954 {
955 int live = hw->total_samples_captured - audio_pcm_hw_find_min_in (hw);
956 if (audio_bug (AUDIO_FUNC, live < 0 || live > hw->samples)) {
957 dolog ("live=%d hw->samples=%d\n", live, hw->samples);
958 return 0;
959 }
960 return live;
961 }
962
audio_pcm_hw_clip_out(HWVoiceOut * hw,void * pcm_buf,int live,int pending)963 int audio_pcm_hw_clip_out (HWVoiceOut *hw, void *pcm_buf,
964 int live, int pending)
965 {
966 int left = hw->samples - pending;
967 int len = audio_MIN (left, live);
968 int clipped = 0;
969
970 while (len) {
971 struct st_sample *src = hw->mix_buf + hw->rpos;
972 uint8_t *dst = advance (pcm_buf, hw->rpos << hw->info.shift);
973 int samples_till_end_of_buf = hw->samples - hw->rpos;
974 int samples_to_clip = audio_MIN (len, samples_till_end_of_buf);
975
976 hw->clip (dst, src, samples_to_clip);
977
978 hw->rpos = (hw->rpos + samples_to_clip) % hw->samples;
979 len -= samples_to_clip;
980 clipped += samples_to_clip;
981 }
982 return clipped;
983 }
984
985 /*
986 * Soft voice (capture)
987 */
audio_pcm_sw_get_rpos_in(SWVoiceIn * sw)988 static int audio_pcm_sw_get_rpos_in (SWVoiceIn *sw)
989 {
990 HWVoiceIn *hw = sw->hw;
991 int live = hw->total_samples_captured - sw->total_hw_samples_acquired;
992 int rpos;
993
994 if (audio_bug (AUDIO_FUNC, live < 0 || live > hw->samples)) {
995 dolog ("live=%d hw->samples=%d\n", live, hw->samples);
996 return 0;
997 }
998
999 rpos = hw->wpos - live;
1000 if (rpos >= 0) {
1001 return rpos;
1002 }
1003 else {
1004 return hw->samples + rpos;
1005 }
1006 }
1007
audio_pcm_sw_read(SWVoiceIn * sw,void * buf,int size)1008 int audio_pcm_sw_read (SWVoiceIn *sw, void *buf, int size)
1009 {
1010 HWVoiceIn *hw = sw->hw;
1011 int samples, live, ret = 0, swlim, isamp, osamp, rpos, total = 0;
1012 struct st_sample *src, *dst = sw->buf;
1013
1014 rpos = audio_pcm_sw_get_rpos_in (sw) % hw->samples;
1015
1016 live = hw->total_samples_captured - sw->total_hw_samples_acquired;
1017 if (audio_bug (AUDIO_FUNC, live < 0 || live > hw->samples)) {
1018 dolog ("live_in=%d hw->samples=%d\n", live, hw->samples);
1019 return 0;
1020 }
1021
1022 samples = size >> sw->info.shift;
1023 if (!live) {
1024 return 0;
1025 }
1026
1027 swlim = (live * sw->ratio) >> 32;
1028 swlim = audio_MIN (swlim, samples);
1029
1030 while (swlim) {
1031 src = hw->conv_buf + rpos;
1032 isamp = hw->wpos - rpos;
1033 /* XXX: <= ? */
1034 if (isamp <= 0) {
1035 isamp = hw->samples - rpos;
1036 }
1037
1038 if (!isamp) {
1039 break;
1040 }
1041 osamp = swlim;
1042
1043 if (audio_bug (AUDIO_FUNC, osamp < 0)) {
1044 dolog ("osamp=%d\n", osamp);
1045 return 0;
1046 }
1047
1048 st_rate_flow (sw->rate, src, dst, &isamp, &osamp);
1049 swlim -= osamp;
1050 rpos = (rpos + isamp) % hw->samples;
1051 dst += osamp;
1052 ret += osamp;
1053 total += isamp;
1054 }
1055
1056 sw->clip (buf, sw->buf, ret);
1057 sw->total_hw_samples_acquired += total;
1058 return ret << sw->info.shift;
1059 }
1060
1061 /*
1062 * Hard voice (playback)
1063 */
audio_pcm_hw_find_min_out(HWVoiceOut * hw,int * nb_livep)1064 static int audio_pcm_hw_find_min_out (HWVoiceOut *hw, int *nb_livep)
1065 {
1066 SWVoiceOut *sw;
1067 int m = INT_MAX;
1068 int nb_live = 0;
1069
1070 for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) {
1071 if (sw->active && !sw->empty) {
1072 m = audio_MIN (m, sw->total_hw_samples_mixed);
1073 nb_live += 1;
1074 }
1075 }
1076
1077 *nb_livep = nb_live;
1078 return m;
1079 }
1080
audio_pcm_hw_get_live_out(HWVoiceOut * hw,int * nb_live)1081 static int audio_pcm_hw_get_live_out (HWVoiceOut *hw, int *nb_live)
1082 {
1083 int smin;
1084 int nb_live1;
1085
1086 smin = audio_pcm_hw_find_min_out (hw, &nb_live1);
1087 if (nb_live) {
1088 *nb_live = nb_live1;
1089 }
1090
1091 if (nb_live1) {
1092 int live = smin;
1093
1094 if (audio_bug (AUDIO_FUNC, live < 0 || live > hw->samples)) {
1095 dolog ("live=%d hw->samples=%d\n", live, hw->samples);
1096 return 0;
1097 }
1098 return live;
1099 }
1100 return 0;
1101 }
1102
1103 /*
1104 * Soft voice (playback)
1105 */
audio_pcm_sw_write(SWVoiceOut * sw,void * buf,int size)1106 int audio_pcm_sw_write (SWVoiceOut *sw, void *buf, int size)
1107 {
1108 int hwsamples, samples, isamp, osamp, wpos, live, dead, left, swlim, blck;
1109 int ret = 0, pos = 0, total = 0;
1110
1111 if (!sw) {
1112 return size;
1113 }
1114
1115 hwsamples = sw->hw->samples;
1116
1117 live = sw->total_hw_samples_mixed;
1118 if (audio_bug (AUDIO_FUNC, live < 0 || live > hwsamples)){
1119 dolog ("live=%d hw->samples=%d\n", live, hwsamples);
1120 return 0;
1121 }
1122
1123 if (live == hwsamples) {
1124 #ifdef DEBUG_OUT
1125 dolog ("%s is full %d\n", sw->name, live);
1126 #endif
1127 return 0;
1128 }
1129
1130 wpos = (sw->hw->rpos + live) % hwsamples;
1131 samples = size >> sw->info.shift;
1132
1133 dead = hwsamples - live;
1134 swlim = ((int64_t) dead << 32) / sw->ratio;
1135 swlim = audio_MIN (swlim, samples);
1136 if (swlim) {
1137 sw->conv (sw->buf, buf, swlim, &sw->vol);
1138 }
1139
1140 while (swlim) {
1141 dead = hwsamples - live;
1142 left = hwsamples - wpos;
1143 blck = audio_MIN (dead, left);
1144 if (!blck) {
1145 break;
1146 }
1147 isamp = swlim;
1148 osamp = blck;
1149 st_rate_flow_mix (
1150 sw->rate,
1151 sw->buf + pos,
1152 sw->hw->mix_buf + wpos,
1153 &isamp,
1154 &osamp
1155 );
1156 ret += isamp;
1157 swlim -= isamp;
1158 pos += isamp;
1159 live += osamp;
1160 wpos = (wpos + osamp) % hwsamples;
1161 total += osamp;
1162 }
1163
1164 sw->total_hw_samples_mixed += total;
1165 sw->empty = sw->total_hw_samples_mixed == 0;
1166
1167 #ifdef DEBUG_OUT
1168 dolog (
1169 "%s: write size %d ret %d total sw %d\n",
1170 SW_NAME (sw),
1171 size >> sw->info.shift,
1172 ret,
1173 sw->total_hw_samples_mixed
1174 );
1175 #endif
1176
1177 return ret << sw->info.shift;
1178 }
1179
1180 #ifdef DEBUG_AUDIO
audio_pcm_print_info(const char * cap,struct audio_pcm_info * info)1181 static void audio_pcm_print_info (const char *cap, struct audio_pcm_info *info)
1182 {
1183 dolog ("%s: bits %d, sign %d, freq %d, nchan %d\n",
1184 cap, info->bits, info->sign, info->freq, info->nchannels);
1185 }
1186 #endif
1187
1188 #define DAC
1189 #include "audio_template.h"
1190 #undef DAC
1191 #include "audio_template.h"
1192
1193 /*
1194 * Timer
1195 */
audio_timer(void * opaque)1196 static void audio_timer (void *opaque)
1197 {
1198 AudioState *s = opaque;
1199 #if 0
1200 #define MAX_DIFFS 100
1201 int64_t now = qemu_clock_get_ms(QEMU_CLOCK_VIRTUAL);
1202 static int64_t last = 0;
1203 static float diffs[MAX_DIFFS];
1204 static int num_diffs;
1205
1206 if (last == 0)
1207 last = now;
1208 else {
1209 diffs[num_diffs] = (float)((now-last)/1e6); /* last diff in ms */
1210 if (++num_diffs == MAX_DIFFS) {
1211 double min_diff = 1e6, max_diff = -1e6;
1212 double all_diff = 0.;
1213 int nn;
1214
1215 for (nn = 0; nn < num_diffs; nn++) {
1216 if (diffs[nn] < min_diff) min_diff = diffs[nn];
1217 if (diffs[nn] > max_diff) max_diff = diffs[nn];
1218 all_diff += diffs[nn];
1219 }
1220 all_diff *= 1.0/num_diffs;
1221 printf("audio timer: min_diff=%6.2g max_diff=%6.2g avg_diff=%6.2g samples=%d\n",
1222 min_diff, max_diff, all_diff, num_diffs);
1223 num_diffs = 0;
1224 }
1225 }
1226 last = now;
1227 #endif
1228
1229 audio_run ("timer");
1230 timer_mod(s->ts, qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) + conf.period.ticks);
1231 }
1232
1233
audio_is_timer_needed(void)1234 static int audio_is_timer_needed (void)
1235 {
1236 HWVoiceIn *hwi = NULL;
1237 HWVoiceOut *hwo = NULL;
1238
1239 while ((hwo = audio_pcm_hw_find_any_enabled_out (hwo))) {
1240 if (!hwo->poll_mode) return 1;
1241 }
1242 while ((hwi = audio_pcm_hw_find_any_enabled_in (hwi))) {
1243 if (!hwi->poll_mode) return 1;
1244 }
1245 return 0;
1246 }
1247
audio_reset_timer(void)1248 static void audio_reset_timer (void)
1249 {
1250 AudioState *s = &glob_audio_state;
1251
1252 if (audio_is_timer_needed ()) {
1253 timer_mod(s->ts, qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) + 1);
1254 }
1255 else {
1256 timer_del(s->ts);
1257 }
1258 }
1259
1260 /*
1261 * Public API
1262 */
AUD_write(SWVoiceOut * sw,void * buf,int size)1263 int AUD_write (SWVoiceOut *sw, void *buf, int size)
1264 {
1265 int bytes;
1266
1267 if (!sw) {
1268 /* XXX: Consider options */
1269 return size;
1270 }
1271
1272 if (!sw->hw->enabled) {
1273 dolog ("Writing to disabled voice %s\n", SW_NAME (sw));
1274 return 0;
1275 }
1276
1277 bytes = sw->hw->pcm_ops->write (sw, buf, size);
1278 return bytes;
1279 }
1280
AUD_read(SWVoiceIn * sw,void * buf,int size)1281 int AUD_read (SWVoiceIn *sw, void *buf, int size)
1282 {
1283 int bytes;
1284
1285 if (!sw) {
1286 /* XXX: Consider options */
1287 return size;
1288 }
1289
1290 if (!sw->hw->enabled) {
1291 dolog ("Reading from disabled voice %s\n", SW_NAME (sw));
1292 return 0;
1293 }
1294
1295 bytes = sw->hw->pcm_ops->read (sw, buf, size);
1296 return bytes;
1297 }
1298
AUD_get_buffer_size_out(SWVoiceOut * sw)1299 int AUD_get_buffer_size_out (SWVoiceOut *sw)
1300 {
1301 return sw->hw->samples << sw->hw->info.shift;
1302 }
1303
AUD_set_active_out(SWVoiceOut * sw,int on)1304 void AUD_set_active_out (SWVoiceOut *sw, int on)
1305 {
1306 HWVoiceOut *hw;
1307
1308 if (!sw) {
1309 return;
1310 }
1311
1312 hw = sw->hw;
1313 if (sw->active != on) {
1314 AudioState *s = &glob_audio_state;
1315 SWVoiceOut *temp_sw;
1316 SWVoiceCap *sc;
1317
1318 if (on) {
1319 hw->pending_disable = 0;
1320 if (!hw->enabled) {
1321 hw->enabled = 1;
1322 if (s->vm_running) {
1323 hw->pcm_ops->ctl_out (hw, VOICE_ENABLE, conf.try_poll_out);
1324 audio_reset_timer ();
1325 }
1326 }
1327 }
1328 else {
1329 if (hw->enabled) {
1330 int nb_active = 0;
1331
1332 for (temp_sw = hw->sw_head.lh_first; temp_sw;
1333 temp_sw = temp_sw->entries.le_next) {
1334 nb_active += temp_sw->active != 0;
1335 }
1336
1337 hw->pending_disable = nb_active == 1;
1338 }
1339 }
1340
1341 for (sc = hw->cap_head.lh_first; sc; sc = sc->entries.le_next) {
1342 sc->sw.active = hw->enabled;
1343 if (hw->enabled) {
1344 audio_capture_maybe_changed (sc->cap, 1);
1345 }
1346 }
1347 sw->active = on;
1348 }
1349 }
1350
AUD_set_active_in(SWVoiceIn * sw,int on)1351 void AUD_set_active_in (SWVoiceIn *sw, int on)
1352 {
1353 HWVoiceIn *hw;
1354
1355 if (!sw) {
1356 return;
1357 }
1358
1359 hw = sw->hw;
1360 if (sw->active != on) {
1361 AudioState *s = &glob_audio_state;
1362 SWVoiceIn *temp_sw;
1363
1364 if (on) {
1365 if (!hw->enabled) {
1366 hw->enabled = 1;
1367 if (s->vm_running) {
1368 hw->pcm_ops->ctl_in (hw, VOICE_ENABLE, conf.try_poll_in);
1369 }
1370 }
1371 sw->total_hw_samples_acquired = hw->total_samples_captured;
1372 }
1373 else {
1374 if (hw->enabled) {
1375 int nb_active = 0;
1376
1377 for (temp_sw = hw->sw_head.lh_first; temp_sw;
1378 temp_sw = temp_sw->entries.le_next) {
1379 nb_active += temp_sw->active != 0;
1380 }
1381
1382 if (nb_active == 1) {
1383 hw->enabled = 0;
1384 hw->pcm_ops->ctl_in (hw, VOICE_DISABLE);
1385 }
1386 }
1387 }
1388 sw->active = on;
1389 }
1390 }
1391
audio_get_avail(SWVoiceIn * sw)1392 static int audio_get_avail (SWVoiceIn *sw)
1393 {
1394 int live;
1395
1396 if (!sw) {
1397 return 0;
1398 }
1399
1400 live = sw->hw->total_samples_captured - sw->total_hw_samples_acquired;
1401 if (audio_bug (AUDIO_FUNC, live < 0 || live > sw->hw->samples)) {
1402 dolog ("live=%d sw->hw->samples=%d\n", live, sw->hw->samples);
1403 return 0;
1404 }
1405
1406 ldebug (
1407 "%s: get_avail live %d ret %" PRId64 "\n",
1408 SW_NAME (sw),
1409 live, (((int64_t) live << 32) / sw->ratio) << sw->info.shift
1410 );
1411
1412 return (((int64_t) live << 32) / sw->ratio) << sw->info.shift;
1413 }
1414
audio_get_free(SWVoiceOut * sw)1415 static int audio_get_free (SWVoiceOut *sw)
1416 {
1417 int live, dead;
1418
1419 if (!sw) {
1420 return 0;
1421 }
1422
1423 live = sw->total_hw_samples_mixed;
1424
1425 if (audio_bug (AUDIO_FUNC, live < 0 || live > sw->hw->samples)) {
1426 dolog ("live=%d sw->hw->samples=%d\n", live, sw->hw->samples);
1427 return 0;
1428 }
1429
1430 dead = sw->hw->samples - live;
1431
1432 #ifdef DEBUG_OUT
1433 dolog ("%s: get_free live %d dead %d ret %" PRId64 "\n",
1434 SW_NAME (sw),
1435 live, dead, (((int64_t) dead << 32) / sw->ratio) << sw->info.shift);
1436 #endif
1437
1438 return (((int64_t) dead << 32) / sw->ratio) << sw->info.shift;
1439 }
1440
audio_capture_mix_and_clear(HWVoiceOut * hw,int rpos,int samples)1441 static void audio_capture_mix_and_clear (HWVoiceOut *hw, int rpos, int samples)
1442 {
1443 int n;
1444
1445 if (hw->enabled) {
1446 SWVoiceCap *sc;
1447
1448 for (sc = hw->cap_head.lh_first; sc; sc = sc->entries.le_next) {
1449 SWVoiceOut *sw = &sc->sw;
1450 int rpos2 = rpos;
1451
1452 n = samples;
1453 while (n) {
1454 int till_end_of_hw = hw->samples - rpos2;
1455 int to_write = audio_MIN (till_end_of_hw, n);
1456 int bytes = to_write << hw->info.shift;
1457 int written;
1458
1459 sw->buf = hw->mix_buf + rpos2;
1460 written = audio_pcm_sw_write (sw, NULL, bytes);
1461 if (written - bytes) {
1462 dolog ("Could not mix %d bytes into a capture "
1463 "buffer, mixed %d\n",
1464 bytes, written);
1465 break;
1466 }
1467 n -= to_write;
1468 rpos2 = (rpos2 + to_write) % hw->samples;
1469 }
1470 }
1471 }
1472
1473 n = audio_MIN (samples, hw->samples - rpos);
1474 mixeng_clear (hw->mix_buf + rpos, n);
1475 mixeng_clear (hw->mix_buf, samples - n);
1476 }
1477
audio_run_out(AudioState * s)1478 static void audio_run_out (AudioState *s)
1479 {
1480 HWVoiceOut *hw = NULL;
1481 SWVoiceOut *sw;
1482
1483 while ((hw = audio_pcm_hw_find_any_enabled_out (hw))) {
1484 int played;
1485 int live, free, nb_live, cleanup_required, prev_rpos;
1486
1487 live = audio_pcm_hw_get_live_out (hw, &nb_live);
1488 if (!nb_live) {
1489 live = 0;
1490 }
1491
1492 if (audio_bug (AUDIO_FUNC, live < 0 || live > hw->samples)) {
1493 dolog ("live=%d hw->samples=%d\n", live, hw->samples);
1494 continue;
1495 }
1496
1497 if (hw->pending_disable && !nb_live) {
1498 SWVoiceCap *sc;
1499 #ifdef DEBUG_OUT
1500 dolog ("Disabling voice\n");
1501 #endif
1502 hw->enabled = 0;
1503 hw->pending_disable = 0;
1504 hw->pcm_ops->ctl_out (hw, VOICE_DISABLE);
1505 for (sc = hw->cap_head.lh_first; sc; sc = sc->entries.le_next) {
1506 sc->sw.active = 0;
1507 audio_recalc_and_notify_capture (sc->cap);
1508 }
1509 continue;
1510 }
1511
1512 if (!live) {
1513 for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) {
1514 if (sw->active) {
1515 free = audio_get_free (sw);
1516 if (free > 0) {
1517 sw->callback.fn (sw->callback.opaque, free);
1518 }
1519 }
1520 }
1521 continue;
1522 }
1523
1524 prev_rpos = hw->rpos;
1525 played = hw->pcm_ops->run_out (hw, live);
1526 if (audio_bug (AUDIO_FUNC, hw->rpos >= hw->samples)) {
1527 dolog ("hw->rpos=%d hw->samples=%d played=%d\n",
1528 hw->rpos, hw->samples, played);
1529 hw->rpos = 0;
1530 }
1531
1532 #ifdef DEBUG_OUT
1533 dolog ("played=%d\n", played);
1534 #endif
1535
1536 if (played) {
1537 hw->ts_helper += played;
1538 audio_capture_mix_and_clear (hw, prev_rpos, played);
1539 }
1540
1541 cleanup_required = 0;
1542 for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) {
1543 if (!sw->active || sw->empty) {
1544 continue;
1545 }
1546
1547 if (audio_bug (AUDIO_FUNC, played > sw->total_hw_samples_mixed)) {
1548 dolog ("played=%d sw->total_hw_samples_mixed=%d\n",
1549 played, sw->total_hw_samples_mixed);
1550 played = sw->total_hw_samples_mixed;
1551 }
1552
1553 sw->total_hw_samples_mixed -= played;
1554
1555 if (!sw->total_hw_samples_mixed) {
1556 sw->empty = 1;
1557 cleanup_required |= !sw->active && !sw->callback.fn;
1558 }
1559
1560 if (sw->active) {
1561 free = audio_get_free (sw);
1562 if (free > 0) {
1563 sw->callback.fn (sw->callback.opaque, free);
1564 }
1565 }
1566 }
1567
1568 if (cleanup_required) {
1569 SWVoiceOut *sw1;
1570
1571 sw = hw->sw_head.lh_first;
1572 while (sw) {
1573 sw1 = sw->entries.le_next;
1574 if (!sw->active && !sw->callback.fn) {
1575 #ifdef DEBUG_PLIVE
1576 dolog ("Finishing with old voice\n");
1577 #endif
1578 audio_close_out (sw);
1579 }
1580 sw = sw1;
1581 }
1582 }
1583 }
1584 }
1585
audio_run_in(AudioState * s)1586 static void audio_run_in (AudioState *s)
1587 {
1588 HWVoiceIn *hw = NULL;
1589
1590 while ((hw = audio_pcm_hw_find_any_enabled_in (hw))) {
1591 SWVoiceIn *sw;
1592 int captured, min;
1593
1594 captured = hw->pcm_ops->run_in (hw);
1595
1596 min = audio_pcm_hw_find_min_in (hw);
1597 hw->total_samples_captured += captured - min;
1598 hw->ts_helper += captured;
1599
1600 for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) {
1601 sw->total_hw_samples_acquired -= min;
1602
1603 if (sw->active) {
1604 int avail;
1605
1606 avail = audio_get_avail (sw);
1607 if (avail > 0) {
1608 sw->callback.fn (sw->callback.opaque, avail);
1609 }
1610 }
1611 }
1612 }
1613 }
1614
audio_run_capture(AudioState * s)1615 static void audio_run_capture (AudioState *s)
1616 {
1617 CaptureVoiceOut *cap;
1618
1619 for (cap = s->cap_head.lh_first; cap; cap = cap->entries.le_next) {
1620 int live, rpos, captured;
1621 HWVoiceOut *hw = &cap->hw;
1622 SWVoiceOut *sw;
1623
1624 captured = live = audio_pcm_hw_get_live_out (hw, NULL);
1625 rpos = hw->rpos;
1626 while (live) {
1627 int left = hw->samples - rpos;
1628 int to_capture = audio_MIN (live, left);
1629 struct st_sample *src;
1630 struct capture_callback *cb;
1631
1632 src = hw->mix_buf + rpos;
1633 hw->clip (cap->buf, src, to_capture);
1634 mixeng_clear (src, to_capture);
1635
1636 for (cb = cap->cb_head.lh_first; cb; cb = cb->entries.le_next) {
1637 cb->ops.capture (cb->opaque, cap->buf,
1638 to_capture << hw->info.shift);
1639 }
1640 rpos = (rpos + to_capture) % hw->samples;
1641 live -= to_capture;
1642 }
1643 hw->rpos = rpos;
1644
1645 for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) {
1646 if (!sw->active && sw->empty) {
1647 continue;
1648 }
1649
1650 if (audio_bug (AUDIO_FUNC, captured > sw->total_hw_samples_mixed)) {
1651 dolog ("captured=%d sw->total_hw_samples_mixed=%d\n",
1652 captured, sw->total_hw_samples_mixed);
1653 captured = sw->total_hw_samples_mixed;
1654 }
1655
1656 sw->total_hw_samples_mixed -= captured;
1657 sw->empty = sw->total_hw_samples_mixed == 0;
1658 }
1659 }
1660 }
1661
audio_run(const char * msg)1662 void audio_run (const char *msg)
1663 {
1664 AudioState *s = &glob_audio_state;
1665
1666 audio_run_out (s);
1667 audio_run_in (s);
1668 audio_run_capture (s);
1669 #ifdef DEBUG_POLL
1670 {
1671 static double prevtime;
1672 double currtime;
1673 struct timeval tv;
1674
1675 if (gettimeofday (&tv, NULL)) {
1676 perror ("audio_run: gettimeofday");
1677 return;
1678 }
1679
1680 currtime = tv.tv_sec + tv.tv_usec * 1e-6;
1681 dolog ("Elapsed since last %s: %f\n", msg, currtime - prevtime);
1682 prevtime = currtime;
1683 }
1684 #endif
1685 }
1686
1687 static struct audio_option audio_options[] = {
1688 /* DAC */
1689 {
1690 .name = "DAC_FIXED_SETTINGS",
1691 .tag = AUD_OPT_BOOL,
1692 .valp = &conf.fixed_out.enabled,
1693 .descr = "Use fixed settings for host DAC"
1694 },
1695 {
1696 .name = "DAC_FIXED_FREQ",
1697 .tag = AUD_OPT_INT,
1698 .valp = &conf.fixed_out.settings.freq,
1699 .descr = "Frequency for fixed host DAC"
1700 },
1701 {
1702 .name = "DAC_FIXED_FMT",
1703 .tag = AUD_OPT_FMT,
1704 .valp = &conf.fixed_out.settings.fmt,
1705 .descr = "Format for fixed host DAC"
1706 },
1707 {
1708 .name = "DAC_FIXED_CHANNELS",
1709 .tag = AUD_OPT_INT,
1710 .valp = &conf.fixed_out.settings.nchannels,
1711 .descr = "Number of channels for fixed DAC (1 - mono, 2 - stereo)"
1712 },
1713 {
1714 .name = "DAC_VOICES",
1715 .tag = AUD_OPT_INT,
1716 .valp = &conf.fixed_out.nb_voices,
1717 .descr = "Number of voices for DAC"
1718 },
1719 {
1720 .name = "DAC_TRY_POLL",
1721 .tag = AUD_OPT_BOOL,
1722 .valp = &conf.try_poll_out,
1723 .descr = "Attempt using poll mode for DAC"
1724 },
1725 /* ADC */
1726 {
1727 .name = "ADC_FIXED_SETTINGS",
1728 .tag = AUD_OPT_BOOL,
1729 .valp = &conf.fixed_in.enabled,
1730 .descr = "Use fixed settings for host ADC"
1731 },
1732 {
1733 .name = "ADC_FIXED_FREQ",
1734 .tag = AUD_OPT_INT,
1735 .valp = &conf.fixed_in.settings.freq,
1736 .descr = "Frequency for fixed host ADC"
1737 },
1738 {
1739 .name = "ADC_FIXED_FMT",
1740 .tag = AUD_OPT_FMT,
1741 .valp = &conf.fixed_in.settings.fmt,
1742 .descr = "Format for fixed host ADC"
1743 },
1744 {
1745 .name = "ADC_FIXED_CHANNELS",
1746 .tag = AUD_OPT_INT,
1747 .valp = &conf.fixed_in.settings.nchannels,
1748 .descr = "Number of channels for fixed ADC (1 - mono, 2 - stereo)"
1749 },
1750 {
1751 .name = "ADC_VOICES",
1752 .tag = AUD_OPT_INT,
1753 .valp = &conf.fixed_in.nb_voices,
1754 .descr = "Number of voices for ADC"
1755 },
1756 {
1757 .name = "ADC_TRY_POLL",
1758 .tag = AUD_OPT_BOOL,
1759 .valp = &conf.try_poll_in,
1760 .descr = "Attempt using poll mode for ADC"
1761 },
1762 /* Misc */
1763 {
1764 .name = "TIMER_PERIOD",
1765 .tag = AUD_OPT_INT,
1766 .valp = &conf.period.hertz,
1767 .descr = "Timer period in HZ (0 - use lowest possible)"
1768 },
1769 {
1770 .name = "PLIVE",
1771 .tag = AUD_OPT_BOOL,
1772 .valp = &conf.plive,
1773 .descr = "(undocumented)"
1774 },
1775 {
1776 .name = "LOG_TO_MONITOR",
1777 .tag = AUD_OPT_BOOL,
1778 .valp = &conf.log_to_monitor,
1779 .descr = "Print logging messages to monitor instead of stderr"
1780 },
1781 { /* End of list */ }
1782 };
1783
audio_pp_nb_voices(const char * typ,int nb)1784 static void audio_pp_nb_voices (const char *typ, int nb)
1785 {
1786 switch (nb) {
1787 case 0:
1788 printf ("Does not support %s\n", typ);
1789 break;
1790 case 1:
1791 printf ("One %s voice\n", typ);
1792 break;
1793 case INT_MAX:
1794 printf ("Theoretically supports many %s voices\n", typ);
1795 break;
1796 default:
1797 printf ("Theoretically supports upto %d %s voices\n", nb, typ);
1798 break;
1799 }
1800
1801 }
1802
AUD_help(void)1803 void AUD_help (void)
1804 {
1805 size_t i;
1806
1807 audio_process_options ("AUDIO", audio_options);
1808 for (i = 0; i < ARRAY_SIZE (drvtab); i++) {
1809 struct audio_driver *d = drvtab[i];
1810 if (d->options) {
1811 audio_process_options (d->name, d->options);
1812 }
1813 }
1814
1815 printf ("Audio options:\n");
1816 audio_print_options ("AUDIO", audio_options);
1817 printf ("\n");
1818
1819 printf ("Available drivers:\n");
1820
1821 for (i = 0; i < ARRAY_SIZE (drvtab); i++) {
1822 struct audio_driver *d = drvtab[i];
1823
1824 printf ("Name: %s\n", d->name);
1825 printf ("Description: %s\n", d->descr);
1826
1827 audio_pp_nb_voices ("playback", d->max_voices_out);
1828 audio_pp_nb_voices ("capture", d->max_voices_in);
1829
1830 if (d->options) {
1831 printf ("Options:\n");
1832 audio_print_options (d->name, d->options);
1833 }
1834 else {
1835 printf ("No options\n");
1836 }
1837 printf ("\n");
1838 }
1839
1840 printf (
1841 "Options are settable through environment variables.\n"
1842 "Example:\n"
1843 #ifdef _WIN32
1844 " set QEMU_AUDIO_DRV=wav\n"
1845 " set QEMU_WAV_PATH=c:\\tune.wav\n"
1846 #else
1847 " export QEMU_AUDIO_DRV=wav\n"
1848 " export QEMU_WAV_PATH=$HOME/tune.wav\n"
1849 "(for csh replace export with setenv in the above)\n"
1850 #endif
1851 " qemu ...\n\n"
1852 );
1853 }
1854
audio_driver_init(AudioState * s,struct audio_driver * drv)1855 static int audio_driver_init (AudioState *s, struct audio_driver *drv)
1856 {
1857 if (drv->options) {
1858 audio_process_options (drv->name, drv->options);
1859 }
1860 s->drv_opaque = drv->init ();
1861
1862 if (s->drv_opaque) {
1863 audio_init_nb_voices_out (drv);
1864 audio_init_nb_voices_in (drv);
1865 s->drv = drv;
1866 return 0;
1867 }
1868 else {
1869 dolog ("Could not init `%s' audio driver\n", drv->name);
1870 return -1;
1871 }
1872 }
1873
audio_vm_change_state_handler(void * opaque,int running,int reason)1874 static void audio_vm_change_state_handler (void *opaque, int running,
1875 int reason)
1876 {
1877 AudioState *s = opaque;
1878 HWVoiceOut *hwo = NULL;
1879 HWVoiceIn *hwi = NULL;
1880 int op = running ? VOICE_ENABLE : VOICE_DISABLE;
1881
1882 s->vm_running = running;
1883 while ((hwo = audio_pcm_hw_find_any_enabled_out (hwo))) {
1884 hwo->pcm_ops->ctl_out (hwo, op, conf.try_poll_out);
1885 }
1886
1887 while ((hwi = audio_pcm_hw_find_any_enabled_in (hwi))) {
1888 hwi->pcm_ops->ctl_in (hwi, op, conf.try_poll_in);
1889 }
1890 audio_reset_timer ();
1891 }
1892
1893 static int initialized;
1894
audio_atexit(void)1895 static void audio_atexit (void)
1896 {
1897 AudioState *s = &glob_audio_state;
1898 HWVoiceOut *hwo = NULL;
1899 HWVoiceIn *hwi = NULL;
1900
1901 if (!initialized) return;
1902 initialized = 0;
1903
1904 while ((hwo = audio_pcm_hw_find_any_enabled_out (hwo))) {
1905 SWVoiceCap *sc;
1906
1907 hwo->pcm_ops->ctl_out (hwo, VOICE_DISABLE);
1908 hwo->pcm_ops->fini_out (hwo);
1909
1910 for (sc = hwo->cap_head.lh_first; sc; sc = sc->entries.le_next) {
1911 CaptureVoiceOut *cap = sc->cap;
1912 struct capture_callback *cb;
1913
1914 for (cb = cap->cb_head.lh_first; cb; cb = cb->entries.le_next) {
1915 cb->ops.destroy (cb->opaque);
1916 }
1917 }
1918 }
1919
1920 while ((hwi = audio_pcm_hw_find_any_enabled_in (hwi))) {
1921 hwi->pcm_ops->ctl_in (hwi, VOICE_DISABLE);
1922 hwi->pcm_ops->fini_in (hwi);
1923 }
1924
1925 if (s->drv) {
1926 s->drv->fini (s->drv_opaque);
1927 }
1928 }
1929
audio_save(QEMUFile * f,void * opaque)1930 static void audio_save (QEMUFile *f, void *opaque)
1931 {
1932 (void) f;
1933 (void) opaque;
1934 }
1935
audio_load(QEMUFile * f,void * opaque,int version_id)1936 static int audio_load (QEMUFile *f, void *opaque, int version_id)
1937 {
1938 (void) f;
1939 (void) opaque;
1940
1941 if (version_id != 1) {
1942 return -EINVAL;
1943 }
1944
1945 return 0;
1946 }
1947
1948
1949
audio_init(void)1950 static void audio_init (void)
1951 {
1952 size_t i;
1953 int done = 0;
1954 const char *drvname;
1955 VMChangeStateEntry *e;
1956 AudioState *s = &glob_audio_state;
1957
1958 if (s->drv) {
1959 return;
1960 }
1961
1962 QLIST_INIT (&s->hw_head_out);
1963 QLIST_INIT (&s->hw_head_in);
1964 QLIST_INIT (&s->cap_head);
1965 atexit (audio_atexit);
1966
1967 s->ts = timer_new(QEMU_CLOCK_VIRTUAL, SCALE_NS, audio_timer, s);
1968 if (!s->ts) {
1969 dolog ("Could not create audio timer\n");
1970 return;
1971 }
1972
1973 audio_process_options ("AUDIO", audio_options);
1974
1975 s->nb_hw_voices_out = conf.fixed_out.nb_voices;
1976 s->nb_hw_voices_in = conf.fixed_in.nb_voices;
1977
1978 if (s->nb_hw_voices_out <= 0) {
1979 dolog ("Bogus number of playback voices %d, setting to 1\n",
1980 s->nb_hw_voices_out);
1981 s->nb_hw_voices_out = 1;
1982 }
1983
1984 if (s->nb_hw_voices_in <= 0) {
1985 dolog ("Bogus number of capture voices %d, setting to 0\n",
1986 s->nb_hw_voices_in);
1987 s->nb_hw_voices_in = 0;
1988 }
1989
1990 {
1991 int def;
1992 drvname = audio_get_conf_str ("QEMU_AUDIO_DRV", NULL, &def);
1993 }
1994
1995 if (drvname) {
1996 int found = 0;
1997
1998 for (i = 0; i < ARRAY_SIZE (drvtab); i++) {
1999 if (!strcmp (drvname, drvtab[i]->name)) {
2000 done = !audio_driver_init (s, drvtab[i]);
2001 found = 1;
2002 break;
2003 }
2004 }
2005
2006 if (!found) {
2007 dolog ("Unknown audio driver `%s'\n", drvname);
2008 dolog ("Run with -audio-help to list available drivers\n");
2009 }
2010 }
2011
2012 if (!done) {
2013 for (i = 0; !done && i < ARRAY_SIZE (drvtab); i++) {
2014 if (drvtab[i]->can_be_default) {
2015 done = !audio_driver_init (s, drvtab[i]);
2016 }
2017 }
2018 }
2019
2020 if (!done) {
2021 done = !audio_driver_init (s, &no_audio_driver);
2022 if (!done) {
2023 hw_error("Could not initialize audio subsystem\n");
2024 }
2025 else {
2026 dolog ("warning: Using timer based audio emulation\n");
2027 }
2028 }
2029
2030 if (conf.period.hertz <= 0) {
2031 if (conf.period.hertz < 0) {
2032 dolog ("warning: Timer period is negative - %d "
2033 "treating as zero\n",
2034 conf.period.hertz);
2035 }
2036 conf.period.ticks = 1;
2037 } else {
2038 conf.period.ticks =
2039 muldiv64 (1, get_ticks_per_sec (), conf.period.hertz);
2040 }
2041
2042 e = qemu_add_vm_change_state_handler (audio_vm_change_state_handler, s);
2043 if (!e) {
2044 dolog ("warning: Could not register change state handler\n"
2045 "(Audio can continue looping even after stopping the VM)\n");
2046 }
2047 initialized = 1;
2048
2049 QLIST_INIT (&s->card_head);
2050 register_savevm(NULL, "audio", 0, 1, audio_save, audio_load, s);
2051 audio_reset_timer();
2052 }
2053
AUD_register_card(const char * name,QEMUSoundCard * card)2054 void AUD_register_card (const char *name, QEMUSoundCard *card)
2055 {
2056 audio_init ();
2057 card->name = g_strdup (name);
2058 memset (&card->entries, 0, sizeof (card->entries));
2059 QLIST_INSERT_HEAD (&glob_audio_state.card_head, card, entries);
2060 }
2061
AUD_remove_card(QEMUSoundCard * card)2062 void AUD_remove_card (QEMUSoundCard *card)
2063 {
2064 QLIST_REMOVE (card, entries);
2065 g_free (card->name);
2066 }
2067
2068
AUD_add_capture(struct audsettings * as,struct audio_capture_ops * ops,void * cb_opaque)2069 CaptureVoiceOut *AUD_add_capture (
2070 struct audsettings *as,
2071 struct audio_capture_ops *ops,
2072 void *cb_opaque
2073 )
2074 {
2075 AudioState *s = &glob_audio_state;
2076 CaptureVoiceOut *cap;
2077 struct capture_callback *cb;
2078
2079 if (audio_validate_settings (as)) {
2080 dolog ("Invalid settings were passed when trying to add capture\n");
2081 audio_print_settings (as);
2082 goto err0;
2083 }
2084
2085 cb = audio_calloc (AUDIO_FUNC, 1, sizeof (*cb));
2086 if (!cb) {
2087 dolog ("Could not allocate capture callback information, size %zu\n",
2088 sizeof (*cb));
2089 goto err0;
2090 }
2091 cb->ops = *ops;
2092 cb->opaque = cb_opaque;
2093
2094 cap = audio_pcm_capture_find_specific (as);
2095 if (cap) {
2096 QLIST_INSERT_HEAD (&cap->cb_head, cb, entries);
2097 return cap;
2098 }
2099 else {
2100 HWVoiceOut *hw;
2101 CaptureVoiceOut *cap;
2102
2103 cap = audio_calloc (AUDIO_FUNC, 1, sizeof (*cap));
2104 if (!cap) {
2105 dolog ("Could not allocate capture voice, size %zu\n",
2106 sizeof (*cap));
2107 goto err1;
2108 }
2109
2110 hw = &cap->hw;
2111 QLIST_INIT (&hw->sw_head);
2112 QLIST_INIT (&cap->cb_head);
2113
2114 /* XXX find a more elegant way */
2115 hw->samples = 4096 * 4;
2116 hw->mix_buf = audio_calloc (AUDIO_FUNC, hw->samples,
2117 sizeof (struct st_sample));
2118 if (!hw->mix_buf) {
2119 dolog ("Could not allocate capture mix buffer (%d samples)\n",
2120 hw->samples);
2121 goto err2;
2122 }
2123
2124 audio_pcm_init_info (&hw->info, as);
2125
2126 cap->buf = audio_calloc (AUDIO_FUNC, hw->samples, 1 << hw->info.shift);
2127 if (!cap->buf) {
2128 dolog ("Could not allocate capture buffer "
2129 "(%d samples, each %d bytes)\n",
2130 hw->samples, 1 << hw->info.shift);
2131 goto err3;
2132 }
2133
2134 hw->clip = mixeng_clip
2135 [hw->info.nchannels == 2]
2136 [hw->info.sign]
2137 [hw->info.swap_endianness]
2138 [audio_bits_to_index (hw->info.bits)];
2139
2140 QLIST_INSERT_HEAD (&s->cap_head, cap, entries);
2141 QLIST_INSERT_HEAD (&cap->cb_head, cb, entries);
2142
2143 hw = NULL;
2144 while ((hw = audio_pcm_hw_find_any_out (hw))) {
2145 audio_attach_capture (hw);
2146 }
2147 return cap;
2148
2149 err3:
2150 g_free (cap->hw.mix_buf);
2151 err2:
2152 g_free (cap);
2153 err1:
2154 g_free (cb);
2155 err0:
2156 return NULL;
2157 }
2158 }
2159
AUD_del_capture(CaptureVoiceOut * cap,void * cb_opaque)2160 void AUD_del_capture (CaptureVoiceOut *cap, void *cb_opaque)
2161 {
2162 struct capture_callback *cb;
2163
2164 for (cb = cap->cb_head.lh_first; cb; cb = cb->entries.le_next) {
2165 if (cb->opaque == cb_opaque) {
2166 cb->ops.destroy (cb_opaque);
2167 QLIST_REMOVE (cb, entries);
2168 g_free (cb);
2169
2170 if (!cap->cb_head.lh_first) {
2171 SWVoiceOut *sw = cap->hw.sw_head.lh_first, *sw1;
2172
2173 while (sw) {
2174 SWVoiceCap *sc = (SWVoiceCap *) sw;
2175 #ifdef DEBUG_CAPTURE
2176 dolog ("freeing %s\n", sw->name);
2177 #endif
2178
2179 sw1 = sw->entries.le_next;
2180 if (sw->rate) {
2181 st_rate_stop (sw->rate);
2182 sw->rate = NULL;
2183 }
2184 QLIST_REMOVE (sw, entries);
2185 QLIST_REMOVE (sc, entries);
2186 g_free (sc);
2187 sw = sw1;
2188 }
2189 QLIST_REMOVE (cap, entries);
2190 g_free (cap);
2191 }
2192 return;
2193 }
2194 }
2195 }
2196
AUD_set_volume_out(SWVoiceOut * sw,int mute,uint8_t lvol,uint8_t rvol)2197 void AUD_set_volume_out (SWVoiceOut *sw, int mute, uint8_t lvol, uint8_t rvol)
2198 {
2199 if (sw) {
2200 sw->vol.mute = mute;
2201 sw->vol.l = nominal_volume.l * lvol / 255;
2202 sw->vol.r = nominal_volume.r * rvol / 255;
2203 }
2204 }
2205
AUD_set_volume_in(SWVoiceIn * sw,int mute,uint8_t lvol,uint8_t rvol)2206 void AUD_set_volume_in (SWVoiceIn *sw, int mute, uint8_t lvol, uint8_t rvol)
2207 {
2208 if (sw) {
2209 sw->vol.mute = mute;
2210 sw->vol.l = nominal_volume.l * lvol / 255;
2211 sw->vol.r = nominal_volume.r * rvol / 255;
2212 }
2213 }
2214