4 * Copyright (c) 2003-2005 Vassili Karpov (malc)
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:
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
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
27 #include "qemu-timer.h"
30 #define AUDIO_CAP "audio"
31 #include "audio_int.h"
33 /* #define DEBUG_PLIVE */
34 /* #define DEBUG_LIVE */
35 /* #define DEBUG_OUT */
36 /* #define DEBUG_CAPTURE */
38 #define SW_NAME(sw) (sw)->name ? (sw)->name : "unknown"
41 /* Order of CONFIG_AUDIO_DRIVERS is import.
42 The 1st one is the one used by default, that is the reason
43 that we generate the list.
45 static struct audio_driver *drvtab[] = {
51 struct fixed_settings {
55 struct audsettings settings;
59 struct fixed_settings fixed_out;
60 struct fixed_settings fixed_in;
68 .fixed_out = { /* DAC fixed settings */
76 .endianness = AUDIO_HOST_ENDIANNESS,
80 .fixed_in = { /* ADC fixed settings */
88 .endianness = AUDIO_HOST_ENDIANNESS,
92 .period = { .hertz = 250 },
97 static AudioState glob_audio_state;
99 struct mixeng_volume nominal_volume = {
110 /* http://www.df.lth.se/~john_e/gems/gem002d.html */
111 /* http://www.multi-platforms.com/Tips/PopCount.htm */
112 uint32_t popcount (uint32_t u)
114 u = ((u&0x55555555) + ((u>>1)&0x55555555));
115 u = ((u&0x33333333) + ((u>>2)&0x33333333));
116 u = ((u&0x0f0f0f0f) + ((u>>4)&0x0f0f0f0f));
117 u = ((u&0x00ff00ff) + ((u>>8)&0x00ff00ff));
118 u = ( u&0x0000ffff) + (u>>16);
122 inline uint32_t lsbindex (uint32_t u)
124 return popcount ((u&-u)-1);
127 #ifdef AUDIO_IS_FLAWLESS_AND_NO_CHECKS_ARE_REQURIED
130 int audio_bug (const char *funcname, int cond)
135 AUD_log (NULL, "A bug was just triggered in %s\n", funcname);
138 AUD_log (NULL, "Save all your work and restart without audio\n");
140 AUD_log (NULL, "I am sorry\n");
142 AUD_log (NULL, "Context:\n");
144 #if defined AUDIO_BREAKPOINT_ON_BUG
145 # if defined HOST_I386
146 # if defined __GNUC__
148 # elif defined _MSC_VER
163 static inline int audio_bits_to_index (int bits)
176 audio_bug ("bits_to_index", 1);
177 AUD_log (NULL, "invalid bits %d\n", bits);
182 void *audio_calloc (const char *funcname, int nmemb, size_t size)
188 cond = !nmemb || !size;
192 if (audio_bug ("audio_calloc", cond)) {
193 AUD_log (NULL, "%s passed invalid arguments to audio_calloc\n",
195 AUD_log (NULL, "nmemb=%d size=%zu (len=%zu)\n", nmemb, size, len);
199 return qemu_mallocz (len);
202 static char *audio_alloc_prefix (const char *s)
204 const char qemu_prefix[] = "QEMU_";
213 r = qemu_malloc (len + sizeof (qemu_prefix));
215 u = r + sizeof (qemu_prefix) - 1;
217 pstrcpy (r, len + sizeof (qemu_prefix), qemu_prefix);
218 pstrcat (r, len + sizeof (qemu_prefix), s);
220 for (i = 0; i < len; ++i) {
221 u[i] = qemu_toupper(u[i]);
227 static const char *audio_audfmt_to_string (audfmt_e fmt)
249 dolog ("Bogus audfmt %d returning S16\n", fmt);
253 static audfmt_e audio_string_to_audfmt (const char *s, audfmt_e defval,
256 if (!strcasecmp (s, "u8")) {
260 else if (!strcasecmp (s, "u16")) {
264 else if (!strcasecmp (s, "u32")) {
268 else if (!strcasecmp (s, "s8")) {
272 else if (!strcasecmp (s, "s16")) {
276 else if (!strcasecmp (s, "s32")) {
281 dolog ("Bogus audio format `%s' using %s\n",
282 s, audio_audfmt_to_string (defval));
288 static audfmt_e audio_get_conf_fmt (const char *envname,
292 const char *var = getenv (envname);
297 return audio_string_to_audfmt (var, defval, defaultp);
300 static int audio_get_conf_int (const char *key, int defval, int *defaultp)
305 strval = getenv (key);
317 static const char *audio_get_conf_str (const char *key,
321 const char *val = getenv (key);
332 void AUD_vlog (const char *cap, const char *fmt, va_list ap)
334 if (conf.log_to_monitor) {
336 monitor_printf(cur_mon, "%s: ", cap);
339 monitor_vprintf(cur_mon, fmt, ap);
343 fprintf (stderr, "%s: ", cap);
346 vfprintf (stderr, fmt, ap);
350 void AUD_log (const char *cap, const char *fmt, ...)
355 AUD_vlog (cap, fmt, ap);
359 static void audio_print_options (const char *prefix,
360 struct audio_option *opt)
365 dolog ("No prefix specified\n");
370 dolog ("No options\n");
374 uprefix = audio_alloc_prefix (prefix);
376 for (; opt->name; opt++) {
377 const char *state = "default";
378 printf (" %s_%s: ", uprefix, opt->name);
380 if (opt->overriddenp && *opt->overriddenp) {
387 int *intp = opt->valp;
388 printf ("boolean, %s = %d\n", state, *intp ? 1 : 0);
394 int *intp = opt->valp;
395 printf ("integer, %s = %d\n", state, *intp);
401 audfmt_e *fmtp = opt->valp;
403 "format, %s = %s, (one of: U8 S8 U16 S16 U32 S32)\n",
405 audio_audfmt_to_string (*fmtp)
412 const char **strp = opt->valp;
413 printf ("string, %s = %s\n",
415 *strp ? *strp : "(not set)");
421 dolog ("Bad value tag for option %s_%s %d\n",
422 uprefix, opt->name, opt->tag);
425 printf (" %s\n", opt->descr);
431 static void audio_process_options (const char *prefix,
432 struct audio_option *opt)
435 const char qemu_prefix[] = "QEMU_";
436 size_t preflen, optlen;
438 if (audio_bug (AUDIO_FUNC, !prefix)) {
439 dolog ("prefix = NULL\n");
443 if (audio_bug (AUDIO_FUNC, !opt)) {
444 dolog ("opt = NULL\n");
448 preflen = strlen (prefix);
450 for (; opt->name; opt++) {
455 dolog ("Option value pointer for `%s' is not set\n",
460 len = strlen (opt->name);
461 /* len of opt->name + len of prefix + size of qemu_prefix
462 * (includes trailing zero) + zero + underscore (on behalf of
464 optlen = len + preflen + sizeof (qemu_prefix) + 1;
465 optname = qemu_malloc (optlen);
467 pstrcpy (optname, optlen, qemu_prefix);
469 /* copy while upper-casing, including trailing zero */
470 for (i = 0; i <= preflen; ++i) {
471 optname[i + sizeof (qemu_prefix) - 1] = qemu_toupper(prefix[i]);
473 pstrcat (optname, optlen, "_");
474 pstrcat (optname, optlen, opt->name);
481 int *intp = opt->valp;
482 *intp = audio_get_conf_int (optname, *intp, &def);
488 audfmt_e *fmtp = opt->valp;
489 *fmtp = audio_get_conf_fmt (optname, *fmtp, &def);
495 const char **strp = opt->valp;
496 *strp = audio_get_conf_str (optname, *strp, &def);
501 dolog ("Bad value tag for option `%s' - %d\n",
506 if (!opt->overriddenp) {
507 opt->overriddenp = &opt->overridden;
509 *opt->overriddenp = !def;
514 static void audio_print_settings (struct audsettings *as)
516 dolog ("frequency=%d nchannels=%d fmt=", as->freq, as->nchannels);
520 AUD_log (NULL, "S8");
523 AUD_log (NULL, "U8");
526 AUD_log (NULL, "S16");
529 AUD_log (NULL, "U16");
532 AUD_log (NULL, "S32");
535 AUD_log (NULL, "U32");
538 AUD_log (NULL, "invalid(%d)", as->fmt);
542 AUD_log (NULL, " endianness=");
543 switch (as->endianness) {
545 AUD_log (NULL, "little");
548 AUD_log (NULL, "big");
551 AUD_log (NULL, "invalid");
554 AUD_log (NULL, "\n");
557 static int audio_validate_settings (struct audsettings *as)
561 invalid = as->nchannels != 1 && as->nchannels != 2;
562 invalid |= as->endianness != 0 && as->endianness != 1;
577 invalid |= as->freq <= 0;
578 return invalid ? -1 : 0;
581 static int audio_pcm_info_eq (struct audio_pcm_info *info, struct audsettings *as)
583 int bits = 8, sign = 0;
603 return info->freq == as->freq
604 && info->nchannels == as->nchannels
605 && info->sign == sign
606 && info->bits == bits
607 && info->swap_endianness == (as->endianness != AUDIO_HOST_ENDIANNESS);
610 void audio_pcm_init_info (struct audio_pcm_info *info, struct audsettings *as)
612 int bits = 8, sign = 0, shift = 0;
635 info->freq = as->freq;
638 info->nchannels = as->nchannels;
639 info->shift = (as->nchannels == 2) + shift;
640 info->align = (1 << info->shift) - 1;
641 info->bytes_per_second = info->freq << info->shift;
642 info->swap_endianness = (as->endianness != AUDIO_HOST_ENDIANNESS);
645 void audio_pcm_info_clear_buf (struct audio_pcm_info *info, void *buf, int len)
652 memset (buf, 0x00, len << info->shift);
655 switch (info->bits) {
657 memset (buf, 0x80, len << info->shift);
664 int shift = info->nchannels - 1;
667 if (info->swap_endianness) {
671 for (i = 0; i < len << shift; i++) {
681 int shift = info->nchannels - 1;
682 int32_t s = INT32_MAX;
684 if (info->swap_endianness) {
688 for (i = 0; i < len << shift; i++) {
695 AUD_log (NULL, "audio_pcm_info_clear_buf: invalid bits %d\n",
705 static void noop_conv (struct st_sample *dst, const void *src,
706 int samples, struct mixeng_volume *vol)
714 static CaptureVoiceOut *audio_pcm_capture_find_specific (
715 struct audsettings *as
718 CaptureVoiceOut *cap;
719 AudioState *s = &glob_audio_state;
721 for (cap = s->cap_head.lh_first; cap; cap = cap->entries.le_next) {
722 if (audio_pcm_info_eq (&cap->hw.info, as)) {
729 static void audio_notify_capture (CaptureVoiceOut *cap, audcnotification_e cmd)
731 struct capture_callback *cb;
734 dolog ("notification %d sent\n", cmd);
736 for (cb = cap->cb_head.lh_first; cb; cb = cb->entries.le_next) {
737 cb->ops.notify (cb->opaque, cmd);
741 static void audio_capture_maybe_changed (CaptureVoiceOut *cap, int enabled)
743 if (cap->hw.enabled != enabled) {
744 audcnotification_e cmd;
745 cap->hw.enabled = enabled;
746 cmd = enabled ? AUD_CNOTIFY_ENABLE : AUD_CNOTIFY_DISABLE;
747 audio_notify_capture (cap, cmd);
751 static void audio_recalc_and_notify_capture (CaptureVoiceOut *cap)
753 HWVoiceOut *hw = &cap->hw;
757 for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) {
763 audio_capture_maybe_changed (cap, enabled);
766 static void audio_detach_capture (HWVoiceOut *hw)
768 SWVoiceCap *sc = hw->cap_head.lh_first;
771 SWVoiceCap *sc1 = sc->entries.le_next;
772 SWVoiceOut *sw = &sc->sw;
773 CaptureVoiceOut *cap = sc->cap;
774 int was_active = sw->active;
777 st_rate_stop (sw->rate);
781 LIST_REMOVE (sw, entries);
782 LIST_REMOVE (sc, entries);
785 /* We have removed soft voice from the capture:
786 this might have changed the overall status of the capture
787 since this might have been the only active voice */
788 audio_recalc_and_notify_capture (cap);
794 static int audio_attach_capture (HWVoiceOut *hw)
796 AudioState *s = &glob_audio_state;
797 CaptureVoiceOut *cap;
799 audio_detach_capture (hw);
800 for (cap = s->cap_head.lh_first; cap; cap = cap->entries.le_next) {
803 HWVoiceOut *hw_cap = &cap->hw;
805 sc = audio_calloc (AUDIO_FUNC, 1, sizeof (*sc));
807 dolog ("Could not allocate soft capture voice (%zu bytes)\n",
817 sw->active = hw->enabled;
818 sw->conv = noop_conv;
819 sw->ratio = ((int64_t) hw_cap->info.freq << 32) / sw->info.freq;
820 sw->rate = st_rate_start (sw->info.freq, hw_cap->info.freq);
822 dolog ("Could not start rate conversion for `%s'\n", SW_NAME (sw));
826 LIST_INSERT_HEAD (&hw_cap->sw_head, sw, entries);
827 LIST_INSERT_HEAD (&hw->cap_head, sc, entries);
829 asprintf (&sw->name, "for %p %d,%d,%d",
830 hw, sw->info.freq, sw->info.bits, sw->info.nchannels);
831 dolog ("Added %s active = %d\n", sw->name, sw->active);
834 audio_capture_maybe_changed (cap, 1);
841 * Hard voice (capture)
843 static int audio_pcm_hw_find_min_in (HWVoiceIn *hw)
846 int m = hw->total_samples_captured;
848 for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) {
850 m = audio_MIN (m, sw->total_hw_samples_acquired);
856 int audio_pcm_hw_get_live_in (HWVoiceIn *hw)
858 int live = hw->total_samples_captured - audio_pcm_hw_find_min_in (hw);
859 if (audio_bug (AUDIO_FUNC, live < 0 || live > hw->samples)) {
860 dolog ("live=%d hw->samples=%d\n", live, hw->samples);
867 * Soft voice (capture)
869 static int audio_pcm_sw_get_rpos_in (SWVoiceIn *sw)
871 HWVoiceIn *hw = sw->hw;
872 int live = hw->total_samples_captured - sw->total_hw_samples_acquired;
875 if (audio_bug (AUDIO_FUNC, live < 0 || live > hw->samples)) {
876 dolog ("live=%d hw->samples=%d\n", live, hw->samples);
880 rpos = hw->wpos - live;
885 return hw->samples + rpos;
889 int audio_pcm_sw_read (SWVoiceIn *sw, void *buf, int size)
891 HWVoiceIn *hw = sw->hw;
892 int samples, live, ret = 0, swlim, isamp, osamp, rpos, total = 0;
893 struct st_sample *src, *dst = sw->buf;
895 rpos = audio_pcm_sw_get_rpos_in (sw) % hw->samples;
897 live = hw->total_samples_captured - sw->total_hw_samples_acquired;
898 if (audio_bug (AUDIO_FUNC, live < 0 || live > hw->samples)) {
899 dolog ("live_in=%d hw->samples=%d\n", live, hw->samples);
903 samples = size >> sw->info.shift;
908 swlim = (live * sw->ratio) >> 32;
909 swlim = audio_MIN (swlim, samples);
912 src = hw->conv_buf + rpos;
913 isamp = hw->wpos - rpos;
916 isamp = hw->samples - rpos;
924 if (audio_bug (AUDIO_FUNC, osamp < 0)) {
925 dolog ("osamp=%d\n", osamp);
929 st_rate_flow (sw->rate, src, dst, &isamp, &osamp);
931 rpos = (rpos + isamp) % hw->samples;
937 sw->clip (buf, sw->buf, ret);
938 sw->total_hw_samples_acquired += total;
939 return ret << sw->info.shift;
943 * Hard voice (playback)
945 static int audio_pcm_hw_find_min_out (HWVoiceOut *hw, int *nb_livep)
951 for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) {
952 if (sw->active || !sw->empty) {
953 m = audio_MIN (m, sw->total_hw_samples_mixed);
962 int audio_pcm_hw_get_live_out2 (HWVoiceOut *hw, int *nb_live)
966 smin = audio_pcm_hw_find_min_out (hw, nb_live);
974 if (audio_bug (AUDIO_FUNC, live < 0 || live > hw->samples)) {
975 dolog ("live=%d hw->samples=%d\n", live, hw->samples);
982 int audio_pcm_hw_get_live_out (HWVoiceOut *hw)
987 live = audio_pcm_hw_get_live_out2 (hw, &nb_live);
988 if (audio_bug (AUDIO_FUNC, live < 0 || live > hw->samples)) {
989 dolog ("live=%d hw->samples=%d\n", live, hw->samples);
996 * Soft voice (playback)
998 int audio_pcm_sw_write (SWVoiceOut *sw, void *buf, int size)
1000 int hwsamples, samples, isamp, osamp, wpos, live, dead, left, swlim, blck;
1001 int ret = 0, pos = 0, total = 0;
1007 hwsamples = sw->hw->samples;
1009 live = sw->total_hw_samples_mixed;
1010 if (audio_bug (AUDIO_FUNC, live < 0 || live > hwsamples)){
1011 dolog ("live=%d hw->samples=%d\n", live, hwsamples);
1015 if (live == hwsamples) {
1017 dolog ("%s is full %d\n", sw->name, live);
1022 wpos = (sw->hw->rpos + live) % hwsamples;
1023 samples = size >> sw->info.shift;
1025 dead = hwsamples - live;
1026 swlim = ((int64_t) dead << 32) / sw->ratio;
1027 swlim = audio_MIN (swlim, samples);
1029 sw->conv (sw->buf, buf, swlim, &sw->vol);
1033 dead = hwsamples - live;
1034 left = hwsamples - wpos;
1035 blck = audio_MIN (dead, left);
1044 sw->hw->mix_buf + wpos,
1052 wpos = (wpos + osamp) % hwsamples;
1056 sw->total_hw_samples_mixed += total;
1057 sw->empty = sw->total_hw_samples_mixed == 0;
1061 "%s: write size %d ret %d total sw %d\n",
1063 size >> sw->info.shift,
1065 sw->total_hw_samples_mixed
1069 return ret << sw->info.shift;
1073 static void audio_pcm_print_info (const char *cap, struct audio_pcm_info *info)
1075 dolog ("%s: bits %d, sign %d, freq %d, nchan %d\n",
1076 cap, info->bits, info->sign, info->freq, info->nchannels);
1081 #include "audio_template.h"
1083 #include "audio_template.h"
1085 int AUD_write (SWVoiceOut *sw, void *buf, int size)
1090 /* XXX: Consider options */
1094 if (!sw->hw->enabled) {
1095 dolog ("Writing to disabled voice %s\n", SW_NAME (sw));
1099 bytes = sw->hw->pcm_ops->write (sw, buf, size);
1103 int AUD_read (SWVoiceIn *sw, void *buf, int size)
1108 /* XXX: Consider options */
1112 if (!sw->hw->enabled) {
1113 dolog ("Reading from disabled voice %s\n", SW_NAME (sw));
1117 bytes = sw->hw->pcm_ops->read (sw, buf, size);
1121 int AUD_get_buffer_size_out (SWVoiceOut *sw)
1123 return sw->hw->samples << sw->hw->info.shift;
1126 void AUD_set_active_out (SWVoiceOut *sw, int on)
1135 if (sw->active != on) {
1136 AudioState *s = &glob_audio_state;
1137 SWVoiceOut *temp_sw;
1141 hw->pending_disable = 0;
1144 if (s->vm_running) {
1145 hw->pcm_ops->ctl_out (hw, VOICE_ENABLE);
1153 for (temp_sw = hw->sw_head.lh_first; temp_sw;
1154 temp_sw = temp_sw->entries.le_next) {
1155 nb_active += temp_sw->active != 0;
1158 hw->pending_disable = nb_active == 1;
1162 for (sc = hw->cap_head.lh_first; sc; sc = sc->entries.le_next) {
1163 sc->sw.active = hw->enabled;
1165 audio_capture_maybe_changed (sc->cap, 1);
1172 void AUD_set_active_in (SWVoiceIn *sw, int on)
1181 if (sw->active != on) {
1182 AudioState *s = &glob_audio_state;
1188 if (s->vm_running) {
1189 hw->pcm_ops->ctl_in (hw, VOICE_ENABLE);
1192 sw->total_hw_samples_acquired = hw->total_samples_captured;
1198 for (temp_sw = hw->sw_head.lh_first; temp_sw;
1199 temp_sw = temp_sw->entries.le_next) {
1200 nb_active += temp_sw->active != 0;
1203 if (nb_active == 1) {
1205 hw->pcm_ops->ctl_in (hw, VOICE_DISABLE);
1213 static int audio_get_avail (SWVoiceIn *sw)
1221 live = sw->hw->total_samples_captured - sw->total_hw_samples_acquired;
1222 if (audio_bug (AUDIO_FUNC, live < 0 || live > sw->hw->samples)) {
1223 dolog ("live=%d sw->hw->samples=%d\n", live, sw->hw->samples);
1228 "%s: get_avail live %d ret %" PRId64 "\n",
1230 live, (((int64_t) live << 32) / sw->ratio) << sw->info.shift
1233 return (((int64_t) live << 32) / sw->ratio) << sw->info.shift;
1236 static int audio_get_free (SWVoiceOut *sw)
1244 live = sw->total_hw_samples_mixed;
1246 if (audio_bug (AUDIO_FUNC, live < 0 || live > sw->hw->samples)) {
1247 dolog ("live=%d sw->hw->samples=%d\n", live, sw->hw->samples);
1251 dead = sw->hw->samples - live;
1254 dolog ("%s: get_free live %d dead %d ret %" PRId64 "\n",
1256 live, dead, (((int64_t) dead << 32) / sw->ratio) << sw->info.shift);
1259 return (((int64_t) dead << 32) / sw->ratio) << sw->info.shift;
1262 static void audio_capture_mix_and_clear (HWVoiceOut *hw, int rpos, int samples)
1269 for (sc = hw->cap_head.lh_first; sc; sc = sc->entries.le_next) {
1270 SWVoiceOut *sw = &sc->sw;
1275 int till_end_of_hw = hw->samples - rpos2;
1276 int to_write = audio_MIN (till_end_of_hw, n);
1277 int bytes = to_write << hw->info.shift;
1280 sw->buf = hw->mix_buf + rpos2;
1281 written = audio_pcm_sw_write (sw, NULL, bytes);
1282 if (written - bytes) {
1283 dolog ("Could not mix %d bytes into a capture "
1284 "buffer, mixed %d\n",
1289 rpos2 = (rpos2 + to_write) % hw->samples;
1294 n = audio_MIN (samples, hw->samples - rpos);
1295 mixeng_clear (hw->mix_buf + rpos, n);
1296 mixeng_clear (hw->mix_buf, samples - n);
1299 static void audio_run_out (AudioState *s)
1301 HWVoiceOut *hw = NULL;
1304 while ((hw = audio_pcm_hw_find_any_enabled_out (hw))) {
1306 int live, free, nb_live, cleanup_required, prev_rpos;
1308 live = audio_pcm_hw_get_live_out2 (hw, &nb_live);
1313 if (audio_bug (AUDIO_FUNC, live < 0 || live > hw->samples)) {
1314 dolog ("live=%d hw->samples=%d\n", live, hw->samples);
1318 if (hw->pending_disable && !nb_live) {
1321 dolog ("Disabling voice\n");
1324 hw->pending_disable = 0;
1325 hw->pcm_ops->ctl_out (hw, VOICE_DISABLE);
1326 for (sc = hw->cap_head.lh_first; sc; sc = sc->entries.le_next) {
1328 audio_recalc_and_notify_capture (sc->cap);
1334 for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) {
1336 free = audio_get_free (sw);
1338 sw->callback.fn (sw->callback.opaque, free);
1345 prev_rpos = hw->rpos;
1346 played = hw->pcm_ops->run_out (hw);
1347 if (audio_bug (AUDIO_FUNC, hw->rpos >= hw->samples)) {
1348 dolog ("hw->rpos=%d hw->samples=%d played=%d\n",
1349 hw->rpos, hw->samples, played);
1354 dolog ("played=%d\n", played);
1358 hw->ts_helper += played;
1359 audio_capture_mix_and_clear (hw, prev_rpos, played);
1362 cleanup_required = 0;
1363 for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) {
1364 if (!sw->active && sw->empty) {
1368 if (audio_bug (AUDIO_FUNC, played > sw->total_hw_samples_mixed)) {
1369 dolog ("played=%d sw->total_hw_samples_mixed=%d\n",
1370 played, sw->total_hw_samples_mixed);
1371 played = sw->total_hw_samples_mixed;
1374 sw->total_hw_samples_mixed -= played;
1376 if (!sw->total_hw_samples_mixed) {
1378 cleanup_required |= !sw->active && !sw->callback.fn;
1382 free = audio_get_free (sw);
1384 sw->callback.fn (sw->callback.opaque, free);
1389 if (cleanup_required) {
1392 sw = hw->sw_head.lh_first;
1394 sw1 = sw->entries.le_next;
1395 if (!sw->active && !sw->callback.fn) {
1397 dolog ("Finishing with old voice\n");
1399 audio_close_out (sw);
1407 static void audio_run_in (AudioState *s)
1409 HWVoiceIn *hw = NULL;
1411 while ((hw = audio_pcm_hw_find_any_enabled_in (hw))) {
1415 captured = hw->pcm_ops->run_in (hw);
1417 min = audio_pcm_hw_find_min_in (hw);
1418 hw->total_samples_captured += captured - min;
1419 hw->ts_helper += captured;
1421 for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) {
1422 sw->total_hw_samples_acquired -= min;
1427 avail = audio_get_avail (sw);
1429 sw->callback.fn (sw->callback.opaque, avail);
1436 static void audio_run_capture (AudioState *s)
1438 CaptureVoiceOut *cap;
1440 for (cap = s->cap_head.lh_first; cap; cap = cap->entries.le_next) {
1441 int live, rpos, captured;
1442 HWVoiceOut *hw = &cap->hw;
1445 captured = live = audio_pcm_hw_get_live_out (hw);
1448 int left = hw->samples - rpos;
1449 int to_capture = audio_MIN (live, left);
1450 struct st_sample *src;
1451 struct capture_callback *cb;
1453 src = hw->mix_buf + rpos;
1454 hw->clip (cap->buf, src, to_capture);
1455 mixeng_clear (src, to_capture);
1457 for (cb = cap->cb_head.lh_first; cb; cb = cb->entries.le_next) {
1458 cb->ops.capture (cb->opaque, cap->buf,
1459 to_capture << hw->info.shift);
1461 rpos = (rpos + to_capture) % hw->samples;
1466 for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) {
1467 if (!sw->active && sw->empty) {
1471 if (audio_bug (AUDIO_FUNC, captured > sw->total_hw_samples_mixed)) {
1472 dolog ("captured=%d sw->total_hw_samples_mixed=%d\n",
1473 captured, sw->total_hw_samples_mixed);
1474 captured = sw->total_hw_samples_mixed;
1477 sw->total_hw_samples_mixed -= captured;
1478 sw->empty = sw->total_hw_samples_mixed == 0;
1483 static void audio_timer (void *opaque)
1485 AudioState *s = opaque;
1489 audio_run_capture (s);
1491 qemu_mod_timer (s->ts, qemu_get_clock (vm_clock) + conf.period.ticks);
1494 static struct audio_option audio_options[] = {
1497 .name = "DAC_FIXED_SETTINGS",
1498 .tag = AUD_OPT_BOOL,
1499 .valp = &conf.fixed_out.enabled,
1500 .descr = "Use fixed settings for host DAC"
1503 .name = "DAC_FIXED_FREQ",
1505 .valp = &conf.fixed_out.settings.freq,
1506 .descr = "Frequency for fixed host DAC"
1509 .name = "DAC_FIXED_FMT",
1511 .valp = &conf.fixed_out.settings.fmt,
1512 .descr = "Format for fixed host DAC"
1515 .name = "DAC_FIXED_CHANNELS",
1517 .valp = &conf.fixed_out.settings.nchannels,
1518 .descr = "Number of channels for fixed DAC (1 - mono, 2 - stereo)"
1521 .name = "DAC_VOICES",
1523 .valp = &conf.fixed_out.nb_voices,
1524 .descr = "Number of voices for DAC"
1528 .name = "ADC_FIXED_SETTINGS",
1529 .tag = AUD_OPT_BOOL,
1530 .valp = &conf.fixed_in.enabled,
1531 .descr = "Use fixed settings for host ADC"
1534 .name = "ADC_FIXED_FREQ",
1536 .valp = &conf.fixed_in.settings.freq,
1537 .descr = "Frequency for fixed host ADC"
1540 .name = "ADC_FIXED_FMT",
1542 .valp = &conf.fixed_in.settings.fmt,
1543 .descr = "Format for fixed host ADC"
1546 .name = "ADC_FIXED_CHANNELS",
1548 .valp = &conf.fixed_in.settings.nchannels,
1549 .descr = "Number of channels for fixed ADC (1 - mono, 2 - stereo)"
1552 .name = "ADC_VOICES",
1554 .valp = &conf.fixed_in.nb_voices,
1555 .descr = "Number of voices for ADC"
1559 .name = "TIMER_PERIOD",
1561 .valp = &conf.period.hertz,
1562 .descr = "Timer period in HZ (0 - use lowest possible)"
1566 .tag = AUD_OPT_BOOL,
1567 .valp = &conf.plive,
1568 .descr = "(undocumented)"
1571 .name = "LOG_TO_MONITOR",
1572 .tag = AUD_OPT_BOOL,
1573 .valp = &conf.log_to_monitor,
1574 .descr = ".descr = print logging messages to monitor instead of stderr"
1576 { /* End of list */ }
1579 static void audio_pp_nb_voices (const char *typ, int nb)
1583 printf ("Does not support %s\n", typ);
1586 printf ("One %s voice\n", typ);
1589 printf ("Theoretically supports many %s voices\n", typ);
1592 printf ("Theoretically supports upto %d %s voices\n", nb, typ);
1598 void AUD_help (void)
1602 audio_process_options ("AUDIO", audio_options);
1603 for (i = 0; i < ARRAY_SIZE (drvtab); i++) {
1604 struct audio_driver *d = drvtab[i];
1606 audio_process_options (d->name, d->options);
1610 printf ("Audio options:\n");
1611 audio_print_options ("AUDIO", audio_options);
1614 printf ("Available drivers:\n");
1616 for (i = 0; i < ARRAY_SIZE (drvtab); i++) {
1617 struct audio_driver *d = drvtab[i];
1619 printf ("Name: %s\n", d->name);
1620 printf ("Description: %s\n", d->descr);
1622 audio_pp_nb_voices ("playback", d->max_voices_out);
1623 audio_pp_nb_voices ("capture", d->max_voices_in);
1626 printf ("Options:\n");
1627 audio_print_options (d->name, d->options);
1630 printf ("No options\n");
1636 "Options are settable through environment variables.\n"
1639 " set QEMU_AUDIO_DRV=wav\n"
1640 " set QEMU_WAV_PATH=c:\\tune.wav\n"
1642 " export QEMU_AUDIO_DRV=wav\n"
1643 " export QEMU_WAV_PATH=$HOME/tune.wav\n"
1644 "(for csh replace export with setenv in the above)\n"
1650 static int audio_driver_init (AudioState *s, struct audio_driver *drv)
1653 audio_process_options (drv->name, drv->options);
1655 s->drv_opaque = drv->init ();
1657 if (s->drv_opaque) {
1658 audio_init_nb_voices_out (drv);
1659 audio_init_nb_voices_in (drv);
1664 dolog ("Could not init `%s' audio driver\n", drv->name);
1669 static void audio_vm_change_state_handler (void *opaque, int running,
1672 AudioState *s = opaque;
1673 HWVoiceOut *hwo = NULL;
1674 HWVoiceIn *hwi = NULL;
1675 int op = running ? VOICE_ENABLE : VOICE_DISABLE;
1677 s->vm_running = running;
1678 while ((hwo = audio_pcm_hw_find_any_enabled_out (hwo))) {
1679 hwo->pcm_ops->ctl_out (hwo, op);
1682 while ((hwi = audio_pcm_hw_find_any_enabled_in (hwi))) {
1683 hwi->pcm_ops->ctl_in (hwi, op);
1687 static void audio_atexit (void)
1689 AudioState *s = &glob_audio_state;
1690 HWVoiceOut *hwo = NULL;
1691 HWVoiceIn *hwi = NULL;
1693 while ((hwo = audio_pcm_hw_find_any_enabled_out (hwo))) {
1696 hwo->pcm_ops->ctl_out (hwo, VOICE_DISABLE);
1697 hwo->pcm_ops->fini_out (hwo);
1699 for (sc = hwo->cap_head.lh_first; sc; sc = sc->entries.le_next) {
1700 CaptureVoiceOut *cap = sc->cap;
1701 struct capture_callback *cb;
1703 for (cb = cap->cb_head.lh_first; cb; cb = cb->entries.le_next) {
1704 cb->ops.destroy (cb->opaque);
1709 while ((hwi = audio_pcm_hw_find_any_enabled_in (hwi))) {
1710 hwi->pcm_ops->ctl_in (hwi, VOICE_DISABLE);
1711 hwi->pcm_ops->fini_in (hwi);
1715 s->drv->fini (s->drv_opaque);
1719 static void audio_save (QEMUFile *f, void *opaque)
1725 static int audio_load (QEMUFile *f, void *opaque, int version_id)
1730 if (version_id != 1) {
1737 static void audio_init (void)
1741 const char *drvname;
1742 AudioState *s = &glob_audio_state;
1748 LIST_INIT (&s->hw_head_out);
1749 LIST_INIT (&s->hw_head_in);
1750 LIST_INIT (&s->cap_head);
1751 atexit (audio_atexit);
1753 s->ts = qemu_new_timer (vm_clock, audio_timer, s);
1755 hw_error("Could not create audio timer\n");
1758 audio_process_options ("AUDIO", audio_options);
1760 s->nb_hw_voices_out = conf.fixed_out.nb_voices;
1761 s->nb_hw_voices_in = conf.fixed_in.nb_voices;
1763 if (s->nb_hw_voices_out <= 0) {
1764 dolog ("Bogus number of playback voices %d, setting to 1\n",
1765 s->nb_hw_voices_out);
1766 s->nb_hw_voices_out = 1;
1769 if (s->nb_hw_voices_in <= 0) {
1770 dolog ("Bogus number of capture voices %d, setting to 0\n",
1771 s->nb_hw_voices_in);
1772 s->nb_hw_voices_in = 0;
1777 drvname = audio_get_conf_str ("QEMU_AUDIO_DRV", NULL, &def);
1783 for (i = 0; i < ARRAY_SIZE (drvtab); i++) {
1784 if (!strcmp (drvname, drvtab[i]->name)) {
1785 done = !audio_driver_init (s, drvtab[i]);
1792 dolog ("Unknown audio driver `%s'\n", drvname);
1793 dolog ("Run with -audio-help to list available drivers\n");
1798 for (i = 0; !done && i < ARRAY_SIZE (drvtab); i++) {
1799 if (drvtab[i]->can_be_default) {
1800 done = !audio_driver_init (s, drvtab[i]);
1806 done = !audio_driver_init (s, &no_audio_driver);
1808 hw_error("Could not initialize audio subsystem\n");
1811 dolog ("warning: Using timer based audio emulation\n");
1815 VMChangeStateEntry *e;
1817 if (conf.period.hertz <= 0) {
1818 if (conf.period.hertz < 0) {
1819 dolog ("warning: Timer period is negative - %d "
1820 "treating as zero\n",
1823 conf.period.ticks = 1;
1825 conf.period.ticks = ticks_per_sec / conf.period.hertz;
1828 e = qemu_add_vm_change_state_handler (audio_vm_change_state_handler, s);
1830 dolog ("warning: Could not register change state handler\n"
1831 "(Audio can continue looping even after stopping the VM)\n");
1834 LIST_INIT (&s->card_head);
1835 register_savevm ("audio", 0, 1, audio_save, audio_load, s);
1836 qemu_mod_timer (s->ts, qemu_get_clock (vm_clock) + conf.period.ticks);
1839 void AUD_register_card (const char *name, QEMUSoundCard *card)
1842 card->name = qemu_strdup (name);
1843 memset (&card->entries, 0, sizeof (card->entries));
1844 LIST_INSERT_HEAD (&glob_audio_state.card_head, card, entries);
1847 void AUD_remove_card (QEMUSoundCard *card)
1849 LIST_REMOVE (card, entries);
1850 qemu_free (card->name);
1854 CaptureVoiceOut *AUD_add_capture (
1855 struct audsettings *as,
1856 struct audio_capture_ops *ops,
1860 AudioState *s = &glob_audio_state;
1861 CaptureVoiceOut *cap;
1862 struct capture_callback *cb;
1864 if (audio_validate_settings (as)) {
1865 dolog ("Invalid settings were passed when trying to add capture\n");
1866 audio_print_settings (as);
1870 cb = audio_calloc (AUDIO_FUNC, 1, sizeof (*cb));
1872 dolog ("Could not allocate capture callback information, size %zu\n",
1877 cb->opaque = cb_opaque;
1879 cap = audio_pcm_capture_find_specific (as);
1881 LIST_INSERT_HEAD (&cap->cb_head, cb, entries);
1886 CaptureVoiceOut *cap;
1888 cap = audio_calloc (AUDIO_FUNC, 1, sizeof (*cap));
1890 dolog ("Could not allocate capture voice, size %zu\n",
1896 LIST_INIT (&hw->sw_head);
1897 LIST_INIT (&cap->cb_head);
1899 /* XXX find a more elegant way */
1900 hw->samples = 4096 * 4;
1901 hw->mix_buf = audio_calloc (AUDIO_FUNC, hw->samples,
1902 sizeof (struct st_sample));
1904 dolog ("Could not allocate capture mix buffer (%d samples)\n",
1909 audio_pcm_init_info (&hw->info, as);
1911 cap->buf = audio_calloc (AUDIO_FUNC, hw->samples, 1 << hw->info.shift);
1913 dolog ("Could not allocate capture buffer "
1914 "(%d samples, each %d bytes)\n",
1915 hw->samples, 1 << hw->info.shift);
1919 hw->clip = mixeng_clip
1920 [hw->info.nchannels == 2]
1922 [hw->info.swap_endianness]
1923 [audio_bits_to_index (hw->info.bits)];
1925 LIST_INSERT_HEAD (&s->cap_head, cap, entries);
1926 LIST_INSERT_HEAD (&cap->cb_head, cb, entries);
1929 while ((hw = audio_pcm_hw_find_any_out (hw))) {
1930 audio_attach_capture (hw);
1935 qemu_free (cap->hw.mix_buf);
1945 void AUD_del_capture (CaptureVoiceOut *cap, void *cb_opaque)
1947 struct capture_callback *cb;
1949 for (cb = cap->cb_head.lh_first; cb; cb = cb->entries.le_next) {
1950 if (cb->opaque == cb_opaque) {
1951 cb->ops.destroy (cb_opaque);
1952 LIST_REMOVE (cb, entries);
1955 if (!cap->cb_head.lh_first) {
1956 SWVoiceOut *sw = cap->hw.sw_head.lh_first, *sw1;
1959 SWVoiceCap *sc = (SWVoiceCap *) sw;
1960 #ifdef DEBUG_CAPTURE
1961 dolog ("freeing %s\n", sw->name);
1964 sw1 = sw->entries.le_next;
1966 st_rate_stop (sw->rate);
1969 LIST_REMOVE (sw, entries);
1970 LIST_REMOVE (sc, entries);
1974 LIST_REMOVE (cap, entries);
1982 void AUD_set_volume_out (SWVoiceOut *sw, int mute, uint8_t lvol, uint8_t rvol)
1985 sw->vol.mute = mute;
1986 sw->vol.l = nominal_volume.l * lvol / 255;
1987 sw->vol.r = nominal_volume.r * rvol / 255;
1991 void AUD_set_volume_in (SWVoiceIn *sw, int mute, uint8_t lvol, uint8_t rvol)
1994 sw->vol.mute = mute;
1995 sw->vol.l = nominal_volume.l * lvol / 255;
1996 sw->vol.r = nominal_volume.r * rvol / 255;