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 */
37 /* #define DEBUG_POLL */
39 #define SW_NAME(sw) (sw)->name ? (sw)->name : "unknown"
42 /* Order of CONFIG_AUDIO_DRIVERS is import.
43 The 1st one is the one used by default, that is the reason
44 that we generate the list.
46 static struct audio_driver *drvtab[] = {
55 struct fixed_settings {
59 struct audsettings settings;
63 struct fixed_settings fixed_out;
64 struct fixed_settings fixed_in;
74 .fixed_out = { /* DAC fixed settings */
82 .endianness = AUDIO_HOST_ENDIANNESS,
86 .fixed_in = { /* ADC fixed settings */
94 .endianness = AUDIO_HOST_ENDIANNESS,
98 .period = { .hertz = 250 },
105 static AudioState glob_audio_state;
107 const struct mixeng_volume nominal_volume = {
118 #ifdef AUDIO_IS_FLAWLESS_AND_NO_CHECKS_ARE_REQURIED
121 static void audio_print_options (const char *prefix,
122 struct audio_option *opt);
124 int audio_bug (const char *funcname, int cond)
129 AUD_log (NULL, "A bug was just triggered in %s\n", funcname);
131 struct audio_driver *d;
134 AUD_log (NULL, "Save all your work and restart without audio\n");
136 AUD_log (NULL, "I am sorry\n");
137 d = glob_audio_state.drv;
139 audio_print_options (d->name, d->options);
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 g_malloc0 (len);
202 static char *audio_alloc_prefix (const char *s)
204 const char qemu_prefix[] = "QEMU_";
213 r = g_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(default_mon, "%s: ", cap);
339 monitor_vprintf(default_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 = g_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, int samples)
712 static CaptureVoiceOut *audio_pcm_capture_find_specific (
713 struct audsettings *as
716 CaptureVoiceOut *cap;
717 AudioState *s = &glob_audio_state;
719 for (cap = s->cap_head.lh_first; cap; cap = cap->entries.le_next) {
720 if (audio_pcm_info_eq (&cap->hw.info, as)) {
727 static void audio_notify_capture (CaptureVoiceOut *cap, audcnotification_e cmd)
729 struct capture_callback *cb;
732 dolog ("notification %d sent\n", cmd);
734 for (cb = cap->cb_head.lh_first; cb; cb = cb->entries.le_next) {
735 cb->ops.notify (cb->opaque, cmd);
739 static void audio_capture_maybe_changed (CaptureVoiceOut *cap, int enabled)
741 if (cap->hw.enabled != enabled) {
742 audcnotification_e cmd;
743 cap->hw.enabled = enabled;
744 cmd = enabled ? AUD_CNOTIFY_ENABLE : AUD_CNOTIFY_DISABLE;
745 audio_notify_capture (cap, cmd);
749 static void audio_recalc_and_notify_capture (CaptureVoiceOut *cap)
751 HWVoiceOut *hw = &cap->hw;
755 for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) {
761 audio_capture_maybe_changed (cap, enabled);
764 static void audio_detach_capture (HWVoiceOut *hw)
766 SWVoiceCap *sc = hw->cap_head.lh_first;
769 SWVoiceCap *sc1 = sc->entries.le_next;
770 SWVoiceOut *sw = &sc->sw;
771 CaptureVoiceOut *cap = sc->cap;
772 int was_active = sw->active;
775 st_rate_stop (sw->rate);
779 QLIST_REMOVE (sw, entries);
780 QLIST_REMOVE (sc, entries);
783 /* We have removed soft voice from the capture:
784 this might have changed the overall status of the capture
785 since this might have been the only active voice */
786 audio_recalc_and_notify_capture (cap);
792 static int audio_attach_capture (HWVoiceOut *hw)
794 AudioState *s = &glob_audio_state;
795 CaptureVoiceOut *cap;
797 audio_detach_capture (hw);
798 for (cap = s->cap_head.lh_first; cap; cap = cap->entries.le_next) {
801 HWVoiceOut *hw_cap = &cap->hw;
803 sc = audio_calloc (AUDIO_FUNC, 1, sizeof (*sc));
805 dolog ("Could not allocate soft capture voice (%zu bytes)\n",
815 sw->active = hw->enabled;
816 sw->conv = noop_conv;
817 sw->ratio = ((int64_t) hw_cap->info.freq << 32) / sw->info.freq;
818 sw->rate = st_rate_start (sw->info.freq, hw_cap->info.freq);
820 dolog ("Could not start rate conversion for `%s'\n", SW_NAME (sw));
824 QLIST_INSERT_HEAD (&hw_cap->sw_head, sw, entries);
825 QLIST_INSERT_HEAD (&hw->cap_head, sc, entries);
827 asprintf (&sw->name, "for %p %d,%d,%d",
828 hw, sw->info.freq, sw->info.bits, sw->info.nchannels);
829 dolog ("Added %s active = %d\n", sw->name, sw->active);
832 audio_capture_maybe_changed (cap, 1);
839 * Hard voice (capture)
841 static int audio_pcm_hw_find_min_in (HWVoiceIn *hw)
844 int m = hw->total_samples_captured;
846 for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) {
848 m = audio_MIN (m, sw->total_hw_samples_acquired);
854 int audio_pcm_hw_get_live_in (HWVoiceIn *hw)
856 int live = hw->total_samples_captured - audio_pcm_hw_find_min_in (hw);
857 if (audio_bug (AUDIO_FUNC, live < 0 || live > hw->samples)) {
858 dolog ("live=%d hw->samples=%d\n", live, hw->samples);
864 int audio_pcm_hw_clip_out (HWVoiceOut *hw, void *pcm_buf,
865 int live, int pending)
867 int left = hw->samples - pending;
868 int len = audio_MIN (left, live);
872 struct st_sample *src = hw->mix_buf + hw->rpos;
873 uint8_t *dst = advance (pcm_buf, hw->rpos << hw->info.shift);
874 int samples_till_end_of_buf = hw->samples - hw->rpos;
875 int samples_to_clip = audio_MIN (len, samples_till_end_of_buf);
877 hw->clip (dst, src, samples_to_clip);
879 hw->rpos = (hw->rpos + samples_to_clip) % hw->samples;
880 len -= samples_to_clip;
881 clipped += samples_to_clip;
887 * Soft voice (capture)
889 static int audio_pcm_sw_get_rpos_in (SWVoiceIn *sw)
891 HWVoiceIn *hw = sw->hw;
892 int live = hw->total_samples_captured - sw->total_hw_samples_acquired;
895 if (audio_bug (AUDIO_FUNC, live < 0 || live > hw->samples)) {
896 dolog ("live=%d hw->samples=%d\n", live, hw->samples);
900 rpos = hw->wpos - live;
905 return hw->samples + rpos;
909 int audio_pcm_sw_read (SWVoiceIn *sw, void *buf, int size)
911 HWVoiceIn *hw = sw->hw;
912 int samples, live, ret = 0, swlim, isamp, osamp, rpos, total = 0;
913 struct st_sample *src, *dst = sw->buf;
915 rpos = audio_pcm_sw_get_rpos_in (sw) % hw->samples;
917 live = hw->total_samples_captured - sw->total_hw_samples_acquired;
918 if (audio_bug (AUDIO_FUNC, live < 0 || live > hw->samples)) {
919 dolog ("live_in=%d hw->samples=%d\n", live, hw->samples);
923 samples = size >> sw->info.shift;
928 swlim = (live * sw->ratio) >> 32;
929 swlim = audio_MIN (swlim, samples);
932 src = hw->conv_buf + rpos;
933 isamp = hw->wpos - rpos;
936 isamp = hw->samples - rpos;
944 if (audio_bug (AUDIO_FUNC, osamp < 0)) {
945 dolog ("osamp=%d\n", osamp);
949 st_rate_flow (sw->rate, src, dst, &isamp, &osamp);
951 rpos = (rpos + isamp) % hw->samples;
957 mixeng_volume (sw->buf, ret, &sw->vol);
959 sw->clip (buf, sw->buf, ret);
960 sw->total_hw_samples_acquired += total;
961 return ret << sw->info.shift;
965 * Hard voice (playback)
967 static int audio_pcm_hw_find_min_out (HWVoiceOut *hw, int *nb_livep)
973 for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) {
974 if (sw->active || !sw->empty) {
975 m = audio_MIN (m, sw->total_hw_samples_mixed);
984 static int audio_pcm_hw_get_live_out (HWVoiceOut *hw, int *nb_live)
989 smin = audio_pcm_hw_find_min_out (hw, &nb_live1);
997 if (audio_bug (AUDIO_FUNC, live < 0 || live > hw->samples)) {
998 dolog ("live=%d hw->samples=%d\n", live, hw->samples);
1007 * Soft voice (playback)
1009 int audio_pcm_sw_write (SWVoiceOut *sw, void *buf, int size)
1011 int hwsamples, samples, isamp, osamp, wpos, live, dead, left, swlim, blck;
1012 int ret = 0, pos = 0, total = 0;
1018 hwsamples = sw->hw->samples;
1020 live = sw->total_hw_samples_mixed;
1021 if (audio_bug (AUDIO_FUNC, live < 0 || live > hwsamples)){
1022 dolog ("live=%d hw->samples=%d\n", live, hwsamples);
1026 if (live == hwsamples) {
1028 dolog ("%s is full %d\n", sw->name, live);
1033 wpos = (sw->hw->rpos + live) % hwsamples;
1034 samples = size >> sw->info.shift;
1036 dead = hwsamples - live;
1037 swlim = ((int64_t) dead << 32) / sw->ratio;
1038 swlim = audio_MIN (swlim, samples);
1040 sw->conv (sw->buf, buf, swlim);
1041 mixeng_volume (sw->buf, swlim, &sw->vol);
1045 dead = hwsamples - live;
1046 left = hwsamples - wpos;
1047 blck = audio_MIN (dead, left);
1056 sw->hw->mix_buf + wpos,
1064 wpos = (wpos + osamp) % hwsamples;
1068 sw->total_hw_samples_mixed += total;
1069 sw->empty = sw->total_hw_samples_mixed == 0;
1073 "%s: write size %d ret %d total sw %d\n",
1075 size >> sw->info.shift,
1077 sw->total_hw_samples_mixed
1081 return ret << sw->info.shift;
1085 static void audio_pcm_print_info (const char *cap, struct audio_pcm_info *info)
1087 dolog ("%s: bits %d, sign %d, freq %d, nchan %d\n",
1088 cap, info->bits, info->sign, info->freq, info->nchannels);
1093 #include "audio_template.h"
1095 #include "audio_template.h"
1100 static int audio_is_timer_needed (void)
1102 HWVoiceIn *hwi = NULL;
1103 HWVoiceOut *hwo = NULL;
1105 while ((hwo = audio_pcm_hw_find_any_enabled_out (hwo))) {
1106 if (!hwo->poll_mode) return 1;
1108 while ((hwi = audio_pcm_hw_find_any_enabled_in (hwi))) {
1109 if (!hwi->poll_mode) return 1;
1114 static void audio_reset_timer (AudioState *s)
1116 if (audio_is_timer_needed ()) {
1117 qemu_mod_timer (s->ts, qemu_get_clock_ns (vm_clock) + 1);
1120 qemu_del_timer (s->ts);
1124 static void audio_timer (void *opaque)
1126 audio_run ("timer");
1127 audio_reset_timer (opaque);
1133 int AUD_write (SWVoiceOut *sw, void *buf, int size)
1138 /* XXX: Consider options */
1142 if (!sw->hw->enabled) {
1143 dolog ("Writing to disabled voice %s\n", SW_NAME (sw));
1147 bytes = sw->hw->pcm_ops->write (sw, buf, size);
1151 int AUD_read (SWVoiceIn *sw, void *buf, int size)
1156 /* XXX: Consider options */
1160 if (!sw->hw->enabled) {
1161 dolog ("Reading from disabled voice %s\n", SW_NAME (sw));
1165 bytes = sw->hw->pcm_ops->read (sw, buf, size);
1169 int AUD_get_buffer_size_out (SWVoiceOut *sw)
1171 return sw->hw->samples << sw->hw->info.shift;
1174 void AUD_set_active_out (SWVoiceOut *sw, int on)
1183 if (sw->active != on) {
1184 AudioState *s = &glob_audio_state;
1185 SWVoiceOut *temp_sw;
1189 hw->pending_disable = 0;
1192 if (s->vm_running) {
1193 hw->pcm_ops->ctl_out (hw, VOICE_ENABLE, conf.try_poll_out);
1194 audio_reset_timer (s);
1202 for (temp_sw = hw->sw_head.lh_first; temp_sw;
1203 temp_sw = temp_sw->entries.le_next) {
1204 nb_active += temp_sw->active != 0;
1207 hw->pending_disable = nb_active == 1;
1211 for (sc = hw->cap_head.lh_first; sc; sc = sc->entries.le_next) {
1212 sc->sw.active = hw->enabled;
1214 audio_capture_maybe_changed (sc->cap, 1);
1221 void AUD_set_active_in (SWVoiceIn *sw, int on)
1230 if (sw->active != on) {
1231 AudioState *s = &glob_audio_state;
1237 if (s->vm_running) {
1238 hw->pcm_ops->ctl_in (hw, VOICE_ENABLE, conf.try_poll_in);
1239 audio_reset_timer (s);
1242 sw->total_hw_samples_acquired = hw->total_samples_captured;
1248 for (temp_sw = hw->sw_head.lh_first; temp_sw;
1249 temp_sw = temp_sw->entries.le_next) {
1250 nb_active += temp_sw->active != 0;
1253 if (nb_active == 1) {
1255 hw->pcm_ops->ctl_in (hw, VOICE_DISABLE);
1263 static int audio_get_avail (SWVoiceIn *sw)
1271 live = sw->hw->total_samples_captured - sw->total_hw_samples_acquired;
1272 if (audio_bug (AUDIO_FUNC, live < 0 || live > sw->hw->samples)) {
1273 dolog ("live=%d sw->hw->samples=%d\n", live, sw->hw->samples);
1278 "%s: get_avail live %d ret %" PRId64 "\n",
1280 live, (((int64_t) live << 32) / sw->ratio) << sw->info.shift
1283 return (((int64_t) live << 32) / sw->ratio) << sw->info.shift;
1286 static int audio_get_free (SWVoiceOut *sw)
1294 live = sw->total_hw_samples_mixed;
1296 if (audio_bug (AUDIO_FUNC, live < 0 || live > sw->hw->samples)) {
1297 dolog ("live=%d sw->hw->samples=%d\n", live, sw->hw->samples);
1301 dead = sw->hw->samples - live;
1304 dolog ("%s: get_free live %d dead %d ret %" PRId64 "\n",
1306 live, dead, (((int64_t) dead << 32) / sw->ratio) << sw->info.shift);
1309 return (((int64_t) dead << 32) / sw->ratio) << sw->info.shift;
1312 static void audio_capture_mix_and_clear (HWVoiceOut *hw, int rpos, int samples)
1319 for (sc = hw->cap_head.lh_first; sc; sc = sc->entries.le_next) {
1320 SWVoiceOut *sw = &sc->sw;
1325 int till_end_of_hw = hw->samples - rpos2;
1326 int to_write = audio_MIN (till_end_of_hw, n);
1327 int bytes = to_write << hw->info.shift;
1330 sw->buf = hw->mix_buf + rpos2;
1331 written = audio_pcm_sw_write (sw, NULL, bytes);
1332 if (written - bytes) {
1333 dolog ("Could not mix %d bytes into a capture "
1334 "buffer, mixed %d\n",
1339 rpos2 = (rpos2 + to_write) % hw->samples;
1344 n = audio_MIN (samples, hw->samples - rpos);
1345 mixeng_clear (hw->mix_buf + rpos, n);
1346 mixeng_clear (hw->mix_buf, samples - n);
1349 static void audio_run_out (AudioState *s)
1351 HWVoiceOut *hw = NULL;
1354 while ((hw = audio_pcm_hw_find_any_enabled_out (hw))) {
1356 int live, free, nb_live, cleanup_required, prev_rpos;
1358 live = audio_pcm_hw_get_live_out (hw, &nb_live);
1363 if (audio_bug (AUDIO_FUNC, live < 0 || live > hw->samples)) {
1364 dolog ("live=%d hw->samples=%d\n", live, hw->samples);
1368 if (hw->pending_disable && !nb_live) {
1371 dolog ("Disabling voice\n");
1374 hw->pending_disable = 0;
1375 hw->pcm_ops->ctl_out (hw, VOICE_DISABLE);
1376 for (sc = hw->cap_head.lh_first; sc; sc = sc->entries.le_next) {
1378 audio_recalc_and_notify_capture (sc->cap);
1384 for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) {
1386 free = audio_get_free (sw);
1388 sw->callback.fn (sw->callback.opaque, free);
1395 prev_rpos = hw->rpos;
1396 played = hw->pcm_ops->run_out (hw, live);
1397 if (audio_bug (AUDIO_FUNC, hw->rpos >= hw->samples)) {
1398 dolog ("hw->rpos=%d hw->samples=%d played=%d\n",
1399 hw->rpos, hw->samples, played);
1404 dolog ("played=%d\n", played);
1408 hw->ts_helper += played;
1409 audio_capture_mix_and_clear (hw, prev_rpos, played);
1412 cleanup_required = 0;
1413 for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) {
1414 if (!sw->active && sw->empty) {
1418 if (audio_bug (AUDIO_FUNC, played > sw->total_hw_samples_mixed)) {
1419 dolog ("played=%d sw->total_hw_samples_mixed=%d\n",
1420 played, sw->total_hw_samples_mixed);
1421 played = sw->total_hw_samples_mixed;
1424 sw->total_hw_samples_mixed -= played;
1426 if (!sw->total_hw_samples_mixed) {
1428 cleanup_required |= !sw->active && !sw->callback.fn;
1432 free = audio_get_free (sw);
1434 sw->callback.fn (sw->callback.opaque, free);
1439 if (cleanup_required) {
1442 sw = hw->sw_head.lh_first;
1444 sw1 = sw->entries.le_next;
1445 if (!sw->active && !sw->callback.fn) {
1447 dolog ("Finishing with old voice\n");
1449 audio_close_out (sw);
1457 static void audio_run_in (AudioState *s)
1459 HWVoiceIn *hw = NULL;
1461 while ((hw = audio_pcm_hw_find_any_enabled_in (hw))) {
1465 captured = hw->pcm_ops->run_in (hw);
1467 min = audio_pcm_hw_find_min_in (hw);
1468 hw->total_samples_captured += captured - min;
1469 hw->ts_helper += captured;
1471 for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) {
1472 sw->total_hw_samples_acquired -= min;
1477 avail = audio_get_avail (sw);
1479 sw->callback.fn (sw->callback.opaque, avail);
1486 static void audio_run_capture (AudioState *s)
1488 CaptureVoiceOut *cap;
1490 for (cap = s->cap_head.lh_first; cap; cap = cap->entries.le_next) {
1491 int live, rpos, captured;
1492 HWVoiceOut *hw = &cap->hw;
1495 captured = live = audio_pcm_hw_get_live_out (hw, NULL);
1498 int left = hw->samples - rpos;
1499 int to_capture = audio_MIN (live, left);
1500 struct st_sample *src;
1501 struct capture_callback *cb;
1503 src = hw->mix_buf + rpos;
1504 hw->clip (cap->buf, src, to_capture);
1505 mixeng_clear (src, to_capture);
1507 for (cb = cap->cb_head.lh_first; cb; cb = cb->entries.le_next) {
1508 cb->ops.capture (cb->opaque, cap->buf,
1509 to_capture << hw->info.shift);
1511 rpos = (rpos + to_capture) % hw->samples;
1516 for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) {
1517 if (!sw->active && sw->empty) {
1521 if (audio_bug (AUDIO_FUNC, captured > sw->total_hw_samples_mixed)) {
1522 dolog ("captured=%d sw->total_hw_samples_mixed=%d\n",
1523 captured, sw->total_hw_samples_mixed);
1524 captured = sw->total_hw_samples_mixed;
1527 sw->total_hw_samples_mixed -= captured;
1528 sw->empty = sw->total_hw_samples_mixed == 0;
1533 void audio_run (const char *msg)
1535 AudioState *s = &glob_audio_state;
1539 audio_run_capture (s);
1542 static double prevtime;
1546 if (gettimeofday (&tv, NULL)) {
1547 perror ("audio_run: gettimeofday");
1551 currtime = tv.tv_sec + tv.tv_usec * 1e-6;
1552 dolog ("Elapsed since last %s: %f\n", msg, currtime - prevtime);
1553 prevtime = currtime;
1558 static struct audio_option audio_options[] = {
1561 .name = "DAC_FIXED_SETTINGS",
1562 .tag = AUD_OPT_BOOL,
1563 .valp = &conf.fixed_out.enabled,
1564 .descr = "Use fixed settings for host DAC"
1567 .name = "DAC_FIXED_FREQ",
1569 .valp = &conf.fixed_out.settings.freq,
1570 .descr = "Frequency for fixed host DAC"
1573 .name = "DAC_FIXED_FMT",
1575 .valp = &conf.fixed_out.settings.fmt,
1576 .descr = "Format for fixed host DAC"
1579 .name = "DAC_FIXED_CHANNELS",
1581 .valp = &conf.fixed_out.settings.nchannels,
1582 .descr = "Number of channels for fixed DAC (1 - mono, 2 - stereo)"
1585 .name = "DAC_VOICES",
1587 .valp = &conf.fixed_out.nb_voices,
1588 .descr = "Number of voices for DAC"
1591 .name = "DAC_TRY_POLL",
1592 .tag = AUD_OPT_BOOL,
1593 .valp = &conf.try_poll_out,
1594 .descr = "Attempt using poll mode for DAC"
1598 .name = "ADC_FIXED_SETTINGS",
1599 .tag = AUD_OPT_BOOL,
1600 .valp = &conf.fixed_in.enabled,
1601 .descr = "Use fixed settings for host ADC"
1604 .name = "ADC_FIXED_FREQ",
1606 .valp = &conf.fixed_in.settings.freq,
1607 .descr = "Frequency for fixed host ADC"
1610 .name = "ADC_FIXED_FMT",
1612 .valp = &conf.fixed_in.settings.fmt,
1613 .descr = "Format for fixed host ADC"
1616 .name = "ADC_FIXED_CHANNELS",
1618 .valp = &conf.fixed_in.settings.nchannels,
1619 .descr = "Number of channels for fixed ADC (1 - mono, 2 - stereo)"
1622 .name = "ADC_VOICES",
1624 .valp = &conf.fixed_in.nb_voices,
1625 .descr = "Number of voices for ADC"
1628 .name = "ADC_TRY_POLL",
1629 .tag = AUD_OPT_BOOL,
1630 .valp = &conf.try_poll_in,
1631 .descr = "Attempt using poll mode for ADC"
1635 .name = "TIMER_PERIOD",
1637 .valp = &conf.period.hertz,
1638 .descr = "Timer period in HZ (0 - use lowest possible)"
1642 .tag = AUD_OPT_BOOL,
1643 .valp = &conf.plive,
1644 .descr = "(undocumented)"
1647 .name = "LOG_TO_MONITOR",
1648 .tag = AUD_OPT_BOOL,
1649 .valp = &conf.log_to_monitor,
1650 .descr = "Print logging messages to monitor instead of stderr"
1652 { /* End of list */ }
1655 static void audio_pp_nb_voices (const char *typ, int nb)
1659 printf ("Does not support %s\n", typ);
1662 printf ("One %s voice\n", typ);
1665 printf ("Theoretically supports many %s voices\n", typ);
1668 printf ("Theoretically supports upto %d %s voices\n", nb, typ);
1674 void AUD_help (void)
1678 audio_process_options ("AUDIO", audio_options);
1679 for (i = 0; i < ARRAY_SIZE (drvtab); i++) {
1680 struct audio_driver *d = drvtab[i];
1682 audio_process_options (d->name, d->options);
1686 printf ("Audio options:\n");
1687 audio_print_options ("AUDIO", audio_options);
1690 printf ("Available drivers:\n");
1692 for (i = 0; i < ARRAY_SIZE (drvtab); i++) {
1693 struct audio_driver *d = drvtab[i];
1695 printf ("Name: %s\n", d->name);
1696 printf ("Description: %s\n", d->descr);
1698 audio_pp_nb_voices ("playback", d->max_voices_out);
1699 audio_pp_nb_voices ("capture", d->max_voices_in);
1702 printf ("Options:\n");
1703 audio_print_options (d->name, d->options);
1706 printf ("No options\n");
1712 "Options are settable through environment variables.\n"
1715 " set QEMU_AUDIO_DRV=wav\n"
1716 " set QEMU_WAV_PATH=c:\\tune.wav\n"
1718 " export QEMU_AUDIO_DRV=wav\n"
1719 " export QEMU_WAV_PATH=$HOME/tune.wav\n"
1720 "(for csh replace export with setenv in the above)\n"
1726 static int audio_driver_init (AudioState *s, struct audio_driver *drv)
1729 audio_process_options (drv->name, drv->options);
1731 s->drv_opaque = drv->init ();
1733 if (s->drv_opaque) {
1734 audio_init_nb_voices_out (drv);
1735 audio_init_nb_voices_in (drv);
1740 dolog ("Could not init `%s' audio driver\n", drv->name);
1745 static void audio_vm_change_state_handler (void *opaque, int running,
1748 AudioState *s = opaque;
1749 HWVoiceOut *hwo = NULL;
1750 HWVoiceIn *hwi = NULL;
1751 int op = running ? VOICE_ENABLE : VOICE_DISABLE;
1753 s->vm_running = running;
1754 while ((hwo = audio_pcm_hw_find_any_enabled_out (hwo))) {
1755 hwo->pcm_ops->ctl_out (hwo, op, conf.try_poll_out);
1758 while ((hwi = audio_pcm_hw_find_any_enabled_in (hwi))) {
1759 hwi->pcm_ops->ctl_in (hwi, op, conf.try_poll_in);
1761 audio_reset_timer (s);
1764 static void audio_atexit (void)
1766 AudioState *s = &glob_audio_state;
1767 HWVoiceOut *hwo = NULL;
1768 HWVoiceIn *hwi = NULL;
1770 while ((hwo = audio_pcm_hw_find_any_enabled_out (hwo))) {
1773 hwo->pcm_ops->ctl_out (hwo, VOICE_DISABLE);
1774 hwo->pcm_ops->fini_out (hwo);
1776 for (sc = hwo->cap_head.lh_first; sc; sc = sc->entries.le_next) {
1777 CaptureVoiceOut *cap = sc->cap;
1778 struct capture_callback *cb;
1780 for (cb = cap->cb_head.lh_first; cb; cb = cb->entries.le_next) {
1781 cb->ops.destroy (cb->opaque);
1786 while ((hwi = audio_pcm_hw_find_any_enabled_in (hwi))) {
1787 hwi->pcm_ops->ctl_in (hwi, VOICE_DISABLE);
1788 hwi->pcm_ops->fini_in (hwi);
1792 s->drv->fini (s->drv_opaque);
1796 static const VMStateDescription vmstate_audio = {
1799 .minimum_version_id = 1,
1800 .minimum_version_id_old = 1,
1801 .fields = (VMStateField []) {
1802 VMSTATE_END_OF_LIST()
1806 static void audio_init (void)
1810 const char *drvname;
1811 VMChangeStateEntry *e;
1812 AudioState *s = &glob_audio_state;
1818 QLIST_INIT (&s->hw_head_out);
1819 QLIST_INIT (&s->hw_head_in);
1820 QLIST_INIT (&s->cap_head);
1821 atexit (audio_atexit);
1823 s->ts = qemu_new_timer_ns (vm_clock, audio_timer, s);
1825 hw_error("Could not create audio timer\n");
1828 audio_process_options ("AUDIO", audio_options);
1830 s->nb_hw_voices_out = conf.fixed_out.nb_voices;
1831 s->nb_hw_voices_in = conf.fixed_in.nb_voices;
1833 if (s->nb_hw_voices_out <= 0) {
1834 dolog ("Bogus number of playback voices %d, setting to 1\n",
1835 s->nb_hw_voices_out);
1836 s->nb_hw_voices_out = 1;
1839 if (s->nb_hw_voices_in <= 0) {
1840 dolog ("Bogus number of capture voices %d, setting to 0\n",
1841 s->nb_hw_voices_in);
1842 s->nb_hw_voices_in = 0;
1847 drvname = audio_get_conf_str ("QEMU_AUDIO_DRV", NULL, &def);
1853 for (i = 0; i < ARRAY_SIZE (drvtab); i++) {
1854 if (!strcmp (drvname, drvtab[i]->name)) {
1855 done = !audio_driver_init (s, drvtab[i]);
1862 dolog ("Unknown audio driver `%s'\n", drvname);
1863 dolog ("Run with -audio-help to list available drivers\n");
1868 for (i = 0; !done && i < ARRAY_SIZE (drvtab); i++) {
1869 if (drvtab[i]->can_be_default) {
1870 done = !audio_driver_init (s, drvtab[i]);
1876 done = !audio_driver_init (s, &no_audio_driver);
1878 hw_error("Could not initialize audio subsystem\n");
1881 dolog ("warning: Using timer based audio emulation\n");
1885 if (conf.period.hertz <= 0) {
1886 if (conf.period.hertz < 0) {
1887 dolog ("warning: Timer period is negative - %d "
1888 "treating as zero\n",
1891 conf.period.ticks = 1;
1894 muldiv64 (1, get_ticks_per_sec (), conf.period.hertz);
1897 e = qemu_add_vm_change_state_handler (audio_vm_change_state_handler, s);
1899 dolog ("warning: Could not register change state handler\n"
1900 "(Audio can continue looping even after stopping the VM)\n");
1903 QLIST_INIT (&s->card_head);
1904 vmstate_register (NULL, 0, &vmstate_audio, s);
1907 void AUD_register_card (const char *name, QEMUSoundCard *card)
1910 card->name = g_strdup (name);
1911 memset (&card->entries, 0, sizeof (card->entries));
1912 QLIST_INSERT_HEAD (&glob_audio_state.card_head, card, entries);
1915 void AUD_remove_card (QEMUSoundCard *card)
1917 QLIST_REMOVE (card, entries);
1918 g_free (card->name);
1922 CaptureVoiceOut *AUD_add_capture (
1923 struct audsettings *as,
1924 struct audio_capture_ops *ops,
1928 AudioState *s = &glob_audio_state;
1929 CaptureVoiceOut *cap;
1930 struct capture_callback *cb;
1932 if (audio_validate_settings (as)) {
1933 dolog ("Invalid settings were passed when trying to add capture\n");
1934 audio_print_settings (as);
1938 cb = audio_calloc (AUDIO_FUNC, 1, sizeof (*cb));
1940 dolog ("Could not allocate capture callback information, size %zu\n",
1945 cb->opaque = cb_opaque;
1947 cap = audio_pcm_capture_find_specific (as);
1949 QLIST_INSERT_HEAD (&cap->cb_head, cb, entries);
1954 CaptureVoiceOut *cap;
1956 cap = audio_calloc (AUDIO_FUNC, 1, sizeof (*cap));
1958 dolog ("Could not allocate capture voice, size %zu\n",
1964 QLIST_INIT (&hw->sw_head);
1965 QLIST_INIT (&cap->cb_head);
1967 /* XXX find a more elegant way */
1968 hw->samples = 4096 * 4;
1969 hw->mix_buf = audio_calloc (AUDIO_FUNC, hw->samples,
1970 sizeof (struct st_sample));
1972 dolog ("Could not allocate capture mix buffer (%d samples)\n",
1977 audio_pcm_init_info (&hw->info, as);
1979 cap->buf = audio_calloc (AUDIO_FUNC, hw->samples, 1 << hw->info.shift);
1981 dolog ("Could not allocate capture buffer "
1982 "(%d samples, each %d bytes)\n",
1983 hw->samples, 1 << hw->info.shift);
1987 hw->clip = mixeng_clip
1988 [hw->info.nchannels == 2]
1990 [hw->info.swap_endianness]
1991 [audio_bits_to_index (hw->info.bits)];
1993 QLIST_INSERT_HEAD (&s->cap_head, cap, entries);
1994 QLIST_INSERT_HEAD (&cap->cb_head, cb, entries);
1997 while ((hw = audio_pcm_hw_find_any_out (hw))) {
1998 audio_attach_capture (hw);
2003 g_free (cap->hw.mix_buf);
2013 void AUD_del_capture (CaptureVoiceOut *cap, void *cb_opaque)
2015 struct capture_callback *cb;
2017 for (cb = cap->cb_head.lh_first; cb; cb = cb->entries.le_next) {
2018 if (cb->opaque == cb_opaque) {
2019 cb->ops.destroy (cb_opaque);
2020 QLIST_REMOVE (cb, entries);
2023 if (!cap->cb_head.lh_first) {
2024 SWVoiceOut *sw = cap->hw.sw_head.lh_first, *sw1;
2027 SWVoiceCap *sc = (SWVoiceCap *) sw;
2028 #ifdef DEBUG_CAPTURE
2029 dolog ("freeing %s\n", sw->name);
2032 sw1 = sw->entries.le_next;
2034 st_rate_stop (sw->rate);
2037 QLIST_REMOVE (sw, entries);
2038 QLIST_REMOVE (sc, entries);
2042 QLIST_REMOVE (cap, entries);
2050 void AUD_set_volume_out (SWVoiceOut *sw, int mute, uint8_t lvol, uint8_t rvol)
2053 sw->vol.mute = mute;
2054 sw->vol.l = nominal_volume.l * lvol / 255;
2055 sw->vol.r = nominal_volume.r * rvol / 255;
2059 void AUD_set_volume_in (SWVoiceIn *sw, int mute, uint8_t lvol, uint8_t rvol)
2062 sw->vol.mute = mute;
2063 sw->vol.l = nominal_volume.l * lvol / 255;
2064 sw->vol.r = nominal_volume.r * rvol / 255;