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"
40 static struct audio_driver *drvtab[] = {
46 struct fixed_settings {
50 struct audsettings settings;
54 struct fixed_settings fixed_out;
55 struct fixed_settings fixed_in;
63 { /* DAC fixed settings */
70 AUD_FMT_S16, /* fmt */
75 { /* ADC fixed settings */
82 AUD_FMT_S16, /* fmt */
89 0 /* log_to_monitor */
92 static AudioState glob_audio_state;
94 struct mixeng_volume nominal_volume = {
105 /* http://www.df.lth.se/~john_e/gems/gem002d.html */
106 /* http://www.multi-platforms.com/Tips/PopCount.htm */
107 uint32_t popcount (uint32_t u)
109 u = ((u&0x55555555) + ((u>>1)&0x55555555));
110 u = ((u&0x33333333) + ((u>>2)&0x33333333));
111 u = ((u&0x0f0f0f0f) + ((u>>4)&0x0f0f0f0f));
112 u = ((u&0x00ff00ff) + ((u>>8)&0x00ff00ff));
113 u = ( u&0x0000ffff) + (u>>16);
117 inline uint32_t lsbindex (uint32_t u)
119 return popcount ((u&-u)-1);
122 #ifdef AUDIO_IS_FLAWLESS_AND_NO_CHECKS_ARE_REQURIED
125 int audio_bug (const char *funcname, int cond)
130 AUD_log (NULL, "A bug was just triggered in %s\n", funcname);
133 AUD_log (NULL, "Save all your work and restart without audio\n");
135 AUD_log (NULL, "I am sorry\n");
137 AUD_log (NULL, "Context:\n");
139 #if defined AUDIO_BREAKPOINT_ON_BUG
140 # if defined HOST_I386
141 # if defined __GNUC__
143 # elif defined _MSC_VER
158 static inline int audio_bits_to_index (int bits)
171 audio_bug ("bits_to_index", 1);
172 AUD_log (NULL, "invalid bits %d\n", bits);
177 void *audio_calloc (const char *funcname, int nmemb, size_t size)
183 cond = !nmemb || !size;
187 if (audio_bug ("audio_calloc", cond)) {
188 AUD_log (NULL, "%s passed invalid arguments to audio_calloc\n",
190 AUD_log (NULL, "nmemb=%d size=%zu (len=%zu)\n", nmemb, size, len);
194 return qemu_mallocz (len);
197 static char *audio_alloc_prefix (const char *s)
199 const char qemu_prefix[] = "QEMU_";
208 r = qemu_malloc (len + sizeof (qemu_prefix));
210 u = r + sizeof (qemu_prefix) - 1;
212 pstrcpy (r, len + sizeof (qemu_prefix), qemu_prefix);
213 pstrcat (r, len + sizeof (qemu_prefix), s);
215 for (i = 0; i < len; ++i) {
216 u[i] = qemu_toupper(u[i]);
222 static const char *audio_audfmt_to_string (audfmt_e fmt)
244 dolog ("Bogus audfmt %d returning S16\n", fmt);
248 static audfmt_e audio_string_to_audfmt (const char *s, audfmt_e defval,
251 if (!strcasecmp (s, "u8")) {
255 else if (!strcasecmp (s, "u16")) {
259 else if (!strcasecmp (s, "u32")) {
263 else if (!strcasecmp (s, "s8")) {
267 else if (!strcasecmp (s, "s16")) {
271 else if (!strcasecmp (s, "s32")) {
276 dolog ("Bogus audio format `%s' using %s\n",
277 s, audio_audfmt_to_string (defval));
283 static audfmt_e audio_get_conf_fmt (const char *envname,
287 const char *var = getenv (envname);
292 return audio_string_to_audfmt (var, defval, defaultp);
295 static int audio_get_conf_int (const char *key, int defval, int *defaultp)
300 strval = getenv (key);
312 static const char *audio_get_conf_str (const char *key,
316 const char *val = getenv (key);
327 void AUD_vlog (const char *cap, const char *fmt, va_list ap)
329 if (conf.log_to_monitor) {
331 monitor_printf(cur_mon, "%s: ", cap);
334 monitor_vprintf(cur_mon, fmt, ap);
338 fprintf (stderr, "%s: ", cap);
341 vfprintf (stderr, fmt, ap);
345 void AUD_log (const char *cap, const char *fmt, ...)
350 AUD_vlog (cap, fmt, ap);
354 static void audio_print_options (const char *prefix,
355 struct audio_option *opt)
360 dolog ("No prefix specified\n");
365 dolog ("No options\n");
369 uprefix = audio_alloc_prefix (prefix);
371 for (; opt->name; opt++) {
372 const char *state = "default";
373 printf (" %s_%s: ", uprefix, opt->name);
375 if (opt->overriddenp && *opt->overriddenp) {
382 int *intp = opt->valp;
383 printf ("boolean, %s = %d\n", state, *intp ? 1 : 0);
389 int *intp = opt->valp;
390 printf ("integer, %s = %d\n", state, *intp);
396 audfmt_e *fmtp = opt->valp;
398 "format, %s = %s, (one of: U8 S8 U16 S16 U32 S32)\n",
400 audio_audfmt_to_string (*fmtp)
407 const char **strp = opt->valp;
408 printf ("string, %s = %s\n",
410 *strp ? *strp : "(not set)");
416 dolog ("Bad value tag for option %s_%s %d\n",
417 uprefix, opt->name, opt->tag);
420 printf (" %s\n", opt->descr);
426 static void audio_process_options (const char *prefix,
427 struct audio_option *opt)
430 const char qemu_prefix[] = "QEMU_";
431 size_t preflen, optlen;
433 if (audio_bug (AUDIO_FUNC, !prefix)) {
434 dolog ("prefix = NULL\n");
438 if (audio_bug (AUDIO_FUNC, !opt)) {
439 dolog ("opt = NULL\n");
443 preflen = strlen (prefix);
445 for (; opt->name; opt++) {
450 dolog ("Option value pointer for `%s' is not set\n",
455 len = strlen (opt->name);
456 /* len of opt->name + len of prefix + size of qemu_prefix
457 * (includes trailing zero) + zero + underscore (on behalf of
459 optlen = len + preflen + sizeof (qemu_prefix) + 1;
460 optname = qemu_malloc (optlen);
462 pstrcpy (optname, optlen, qemu_prefix);
464 /* copy while upper-casing, including trailing zero */
465 for (i = 0; i <= preflen; ++i) {
466 optname[i + sizeof (qemu_prefix) - 1] = qemu_toupper(prefix[i]);
468 pstrcat (optname, optlen, "_");
469 pstrcat (optname, optlen, opt->name);
476 int *intp = opt->valp;
477 *intp = audio_get_conf_int (optname, *intp, &def);
483 audfmt_e *fmtp = opt->valp;
484 *fmtp = audio_get_conf_fmt (optname, *fmtp, &def);
490 const char **strp = opt->valp;
491 *strp = audio_get_conf_str (optname, *strp, &def);
496 dolog ("Bad value tag for option `%s' - %d\n",
501 if (!opt->overriddenp) {
502 opt->overriddenp = &opt->overridden;
504 *opt->overriddenp = !def;
509 static void audio_print_settings (struct audsettings *as)
511 dolog ("frequency=%d nchannels=%d fmt=", as->freq, as->nchannels);
515 AUD_log (NULL, "S8");
518 AUD_log (NULL, "U8");
521 AUD_log (NULL, "S16");
524 AUD_log (NULL, "U16");
527 AUD_log (NULL, "S32");
530 AUD_log (NULL, "U32");
533 AUD_log (NULL, "invalid(%d)", as->fmt);
537 AUD_log (NULL, " endianness=");
538 switch (as->endianness) {
540 AUD_log (NULL, "little");
543 AUD_log (NULL, "big");
546 AUD_log (NULL, "invalid");
549 AUD_log (NULL, "\n");
552 static int audio_validate_settings (struct audsettings *as)
556 invalid = as->nchannels != 1 && as->nchannels != 2;
557 invalid |= as->endianness != 0 && as->endianness != 1;
572 invalid |= as->freq <= 0;
573 return invalid ? -1 : 0;
576 static int audio_pcm_info_eq (struct audio_pcm_info *info, struct audsettings *as)
578 int bits = 8, sign = 0;
598 return info->freq == as->freq
599 && info->nchannels == as->nchannels
600 && info->sign == sign
601 && info->bits == bits
602 && info->swap_endianness == (as->endianness != AUDIO_HOST_ENDIANNESS);
605 void audio_pcm_init_info (struct audio_pcm_info *info, struct audsettings *as)
607 int bits = 8, sign = 0, shift = 0;
630 info->freq = as->freq;
633 info->nchannels = as->nchannels;
634 info->shift = (as->nchannels == 2) + shift;
635 info->align = (1 << info->shift) - 1;
636 info->bytes_per_second = info->freq << info->shift;
637 info->swap_endianness = (as->endianness != AUDIO_HOST_ENDIANNESS);
640 void audio_pcm_info_clear_buf (struct audio_pcm_info *info, void *buf, int len)
647 memset (buf, 0x00, len << info->shift);
650 switch (info->bits) {
652 memset (buf, 0x80, len << info->shift);
659 int shift = info->nchannels - 1;
662 if (info->swap_endianness) {
666 for (i = 0; i < len << shift; i++) {
676 int shift = info->nchannels - 1;
677 int32_t s = INT32_MAX;
679 if (info->swap_endianness) {
683 for (i = 0; i < len << shift; i++) {
690 AUD_log (NULL, "audio_pcm_info_clear_buf: invalid bits %d\n",
700 static void noop_conv (struct st_sample *dst, const void *src,
701 int samples, struct mixeng_volume *vol)
709 static CaptureVoiceOut *audio_pcm_capture_find_specific (
711 struct audsettings *as
714 CaptureVoiceOut *cap;
716 for (cap = s->cap_head.lh_first; cap; cap = cap->entries.le_next) {
717 if (audio_pcm_info_eq (&cap->hw.info, as)) {
724 static void audio_notify_capture (CaptureVoiceOut *cap, audcnotification_e cmd)
726 struct capture_callback *cb;
729 dolog ("notification %d sent\n", cmd);
731 for (cb = cap->cb_head.lh_first; cb; cb = cb->entries.le_next) {
732 cb->ops.notify (cb->opaque, cmd);
736 static void audio_capture_maybe_changed (CaptureVoiceOut *cap, int enabled)
738 if (cap->hw.enabled != enabled) {
739 audcnotification_e cmd;
740 cap->hw.enabled = enabled;
741 cmd = enabled ? AUD_CNOTIFY_ENABLE : AUD_CNOTIFY_DISABLE;
742 audio_notify_capture (cap, cmd);
746 static void audio_recalc_and_notify_capture (CaptureVoiceOut *cap)
748 HWVoiceOut *hw = &cap->hw;
752 for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) {
758 audio_capture_maybe_changed (cap, enabled);
761 static void audio_detach_capture (HWVoiceOut *hw)
763 SWVoiceCap *sc = hw->cap_head.lh_first;
766 SWVoiceCap *sc1 = sc->entries.le_next;
767 SWVoiceOut *sw = &sc->sw;
768 CaptureVoiceOut *cap = sc->cap;
769 int was_active = sw->active;
772 st_rate_stop (sw->rate);
776 LIST_REMOVE (sw, entries);
777 LIST_REMOVE (sc, entries);
780 /* We have removed soft voice from the capture:
781 this might have changed the overall status of the capture
782 since this might have been the only active voice */
783 audio_recalc_and_notify_capture (cap);
789 static int audio_attach_capture (AudioState *s, HWVoiceOut *hw)
791 CaptureVoiceOut *cap;
793 audio_detach_capture (hw);
794 for (cap = s->cap_head.lh_first; cap; cap = cap->entries.le_next) {
797 HWVoiceOut *hw_cap = &cap->hw;
799 sc = audio_calloc (AUDIO_FUNC, 1, sizeof (*sc));
801 dolog ("Could not allocate soft capture voice (%zu bytes)\n",
811 sw->active = hw->enabled;
812 sw->conv = noop_conv;
813 sw->ratio = ((int64_t) hw_cap->info.freq << 32) / sw->info.freq;
814 sw->rate = st_rate_start (sw->info.freq, hw_cap->info.freq);
816 dolog ("Could not start rate conversion for `%s'\n", SW_NAME (sw));
820 LIST_INSERT_HEAD (&hw_cap->sw_head, sw, entries);
821 LIST_INSERT_HEAD (&hw->cap_head, sc, entries);
823 asprintf (&sw->name, "for %p %d,%d,%d",
824 hw, sw->info.freq, sw->info.bits, sw->info.nchannels);
825 dolog ("Added %s active = %d\n", sw->name, sw->active);
828 audio_capture_maybe_changed (cap, 1);
835 * Hard voice (capture)
837 static int audio_pcm_hw_find_min_in (HWVoiceIn *hw)
840 int m = hw->total_samples_captured;
842 for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) {
844 m = audio_MIN (m, sw->total_hw_samples_acquired);
850 int audio_pcm_hw_get_live_in (HWVoiceIn *hw)
852 int live = hw->total_samples_captured - audio_pcm_hw_find_min_in (hw);
853 if (audio_bug (AUDIO_FUNC, live < 0 || live > hw->samples)) {
854 dolog ("live=%d hw->samples=%d\n", live, hw->samples);
861 * Soft voice (capture)
863 static int audio_pcm_sw_get_rpos_in (SWVoiceIn *sw)
865 HWVoiceIn *hw = sw->hw;
866 int live = hw->total_samples_captured - sw->total_hw_samples_acquired;
869 if (audio_bug (AUDIO_FUNC, live < 0 || live > hw->samples)) {
870 dolog ("live=%d hw->samples=%d\n", live, hw->samples);
874 rpos = hw->wpos - live;
879 return hw->samples + rpos;
883 int audio_pcm_sw_read (SWVoiceIn *sw, void *buf, int size)
885 HWVoiceIn *hw = sw->hw;
886 int samples, live, ret = 0, swlim, isamp, osamp, rpos, total = 0;
887 struct st_sample *src, *dst = sw->buf;
889 rpos = audio_pcm_sw_get_rpos_in (sw) % hw->samples;
891 live = hw->total_samples_captured - sw->total_hw_samples_acquired;
892 if (audio_bug (AUDIO_FUNC, live < 0 || live > hw->samples)) {
893 dolog ("live_in=%d hw->samples=%d\n", live, hw->samples);
897 samples = size >> sw->info.shift;
902 swlim = (live * sw->ratio) >> 32;
903 swlim = audio_MIN (swlim, samples);
906 src = hw->conv_buf + rpos;
907 isamp = hw->wpos - rpos;
910 isamp = hw->samples - rpos;
918 if (audio_bug (AUDIO_FUNC, osamp < 0)) {
919 dolog ("osamp=%d\n", osamp);
923 st_rate_flow (sw->rate, src, dst, &isamp, &osamp);
925 rpos = (rpos + isamp) % hw->samples;
931 sw->clip (buf, sw->buf, ret);
932 sw->total_hw_samples_acquired += total;
933 return ret << sw->info.shift;
937 * Hard voice (playback)
939 static int audio_pcm_hw_find_min_out (HWVoiceOut *hw, int *nb_livep)
945 for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) {
946 if (sw->active || !sw->empty) {
947 m = audio_MIN (m, sw->total_hw_samples_mixed);
956 int audio_pcm_hw_get_live_out2 (HWVoiceOut *hw, int *nb_live)
960 smin = audio_pcm_hw_find_min_out (hw, nb_live);
968 if (audio_bug (AUDIO_FUNC, live < 0 || live > hw->samples)) {
969 dolog ("live=%d hw->samples=%d\n", live, hw->samples);
976 int audio_pcm_hw_get_live_out (HWVoiceOut *hw)
981 live = audio_pcm_hw_get_live_out2 (hw, &nb_live);
982 if (audio_bug (AUDIO_FUNC, live < 0 || live > hw->samples)) {
983 dolog ("live=%d hw->samples=%d\n", live, hw->samples);
990 * Soft voice (playback)
992 int audio_pcm_sw_write (SWVoiceOut *sw, void *buf, int size)
994 int hwsamples, samples, isamp, osamp, wpos, live, dead, left, swlim, blck;
995 int ret = 0, pos = 0, total = 0;
1001 hwsamples = sw->hw->samples;
1003 live = sw->total_hw_samples_mixed;
1004 if (audio_bug (AUDIO_FUNC, live < 0 || live > hwsamples)){
1005 dolog ("live=%d hw->samples=%d\n", live, hwsamples);
1009 if (live == hwsamples) {
1011 dolog ("%s is full %d\n", sw->name, live);
1016 wpos = (sw->hw->rpos + live) % hwsamples;
1017 samples = size >> sw->info.shift;
1019 dead = hwsamples - live;
1020 swlim = ((int64_t) dead << 32) / sw->ratio;
1021 swlim = audio_MIN (swlim, samples);
1023 sw->conv (sw->buf, buf, swlim, &sw->vol);
1027 dead = hwsamples - live;
1028 left = hwsamples - wpos;
1029 blck = audio_MIN (dead, left);
1038 sw->hw->mix_buf + wpos,
1046 wpos = (wpos + osamp) % hwsamples;
1050 sw->total_hw_samples_mixed += total;
1051 sw->empty = sw->total_hw_samples_mixed == 0;
1055 "%s: write size %d ret %d total sw %d\n",
1057 size >> sw->info.shift,
1059 sw->total_hw_samples_mixed
1063 return ret << sw->info.shift;
1067 static void audio_pcm_print_info (const char *cap, struct audio_pcm_info *info)
1069 dolog ("%s: bits %d, sign %d, freq %d, nchan %d\n",
1070 cap, info->bits, info->sign, info->freq, info->nchannels);
1075 #include "audio_template.h"
1077 #include "audio_template.h"
1079 int AUD_write (SWVoiceOut *sw, void *buf, int size)
1084 /* XXX: Consider options */
1088 if (!sw->hw->enabled) {
1089 dolog ("Writing to disabled voice %s\n", SW_NAME (sw));
1093 bytes = sw->hw->pcm_ops->write (sw, buf, size);
1097 int AUD_read (SWVoiceIn *sw, void *buf, int size)
1102 /* XXX: Consider options */
1106 if (!sw->hw->enabled) {
1107 dolog ("Reading from disabled voice %s\n", SW_NAME (sw));
1111 bytes = sw->hw->pcm_ops->read (sw, buf, size);
1115 int AUD_get_buffer_size_out (SWVoiceOut *sw)
1117 return sw->hw->samples << sw->hw->info.shift;
1120 void AUD_set_active_out (SWVoiceOut *sw, int on)
1129 if (sw->active != on) {
1130 AudioState *s = &glob_audio_state;
1131 SWVoiceOut *temp_sw;
1135 hw->pending_disable = 0;
1138 if (s->vm_running) {
1139 hw->pcm_ops->ctl_out (hw, VOICE_ENABLE);
1147 for (temp_sw = hw->sw_head.lh_first; temp_sw;
1148 temp_sw = temp_sw->entries.le_next) {
1149 nb_active += temp_sw->active != 0;
1152 hw->pending_disable = nb_active == 1;
1156 for (sc = hw->cap_head.lh_first; sc; sc = sc->entries.le_next) {
1157 sc->sw.active = hw->enabled;
1159 audio_capture_maybe_changed (sc->cap, 1);
1166 void AUD_set_active_in (SWVoiceIn *sw, int on)
1175 if (sw->active != on) {
1176 AudioState *s = &glob_audio_state;
1182 if (s->vm_running) {
1183 hw->pcm_ops->ctl_in (hw, VOICE_ENABLE);
1186 sw->total_hw_samples_acquired = hw->total_samples_captured;
1192 for (temp_sw = hw->sw_head.lh_first; temp_sw;
1193 temp_sw = temp_sw->entries.le_next) {
1194 nb_active += temp_sw->active != 0;
1197 if (nb_active == 1) {
1199 hw->pcm_ops->ctl_in (hw, VOICE_DISABLE);
1207 static int audio_get_avail (SWVoiceIn *sw)
1215 live = sw->hw->total_samples_captured - sw->total_hw_samples_acquired;
1216 if (audio_bug (AUDIO_FUNC, live < 0 || live > sw->hw->samples)) {
1217 dolog ("live=%d sw->hw->samples=%d\n", live, sw->hw->samples);
1222 "%s: get_avail live %d ret %" PRId64 "\n",
1224 live, (((int64_t) live << 32) / sw->ratio) << sw->info.shift
1227 return (((int64_t) live << 32) / sw->ratio) << sw->info.shift;
1230 static int audio_get_free (SWVoiceOut *sw)
1238 live = sw->total_hw_samples_mixed;
1240 if (audio_bug (AUDIO_FUNC, live < 0 || live > sw->hw->samples)) {
1241 dolog ("live=%d sw->hw->samples=%d\n", live, sw->hw->samples);
1245 dead = sw->hw->samples - live;
1248 dolog ("%s: get_free live %d dead %d ret %" PRId64 "\n",
1250 live, dead, (((int64_t) dead << 32) / sw->ratio) << sw->info.shift);
1253 return (((int64_t) dead << 32) / sw->ratio) << sw->info.shift;
1256 static void audio_capture_mix_and_clear (HWVoiceOut *hw, int rpos, int samples)
1263 for (sc = hw->cap_head.lh_first; sc; sc = sc->entries.le_next) {
1264 SWVoiceOut *sw = &sc->sw;
1269 int till_end_of_hw = hw->samples - rpos2;
1270 int to_write = audio_MIN (till_end_of_hw, n);
1271 int bytes = to_write << hw->info.shift;
1274 sw->buf = hw->mix_buf + rpos2;
1275 written = audio_pcm_sw_write (sw, NULL, bytes);
1276 if (written - bytes) {
1277 dolog ("Could not mix %d bytes into a capture "
1278 "buffer, mixed %d\n",
1283 rpos2 = (rpos2 + to_write) % hw->samples;
1288 n = audio_MIN (samples, hw->samples - rpos);
1289 mixeng_clear (hw->mix_buf + rpos, n);
1290 mixeng_clear (hw->mix_buf, samples - n);
1293 static void audio_run_out (AudioState *s)
1295 HWVoiceOut *hw = NULL;
1298 while ((hw = audio_pcm_hw_find_any_enabled_out (s, hw))) {
1300 int live, free, nb_live, cleanup_required, prev_rpos;
1302 live = audio_pcm_hw_get_live_out2 (hw, &nb_live);
1307 if (audio_bug (AUDIO_FUNC, live < 0 || live > hw->samples)) {
1308 dolog ("live=%d hw->samples=%d\n", live, hw->samples);
1312 if (hw->pending_disable && !nb_live) {
1315 dolog ("Disabling voice\n");
1318 hw->pending_disable = 0;
1319 hw->pcm_ops->ctl_out (hw, VOICE_DISABLE);
1320 for (sc = hw->cap_head.lh_first; sc; sc = sc->entries.le_next) {
1322 audio_recalc_and_notify_capture (sc->cap);
1328 for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) {
1330 free = audio_get_free (sw);
1332 sw->callback.fn (sw->callback.opaque, free);
1339 prev_rpos = hw->rpos;
1340 played = hw->pcm_ops->run_out (hw);
1341 if (audio_bug (AUDIO_FUNC, hw->rpos >= hw->samples)) {
1342 dolog ("hw->rpos=%d hw->samples=%d played=%d\n",
1343 hw->rpos, hw->samples, played);
1348 dolog ("played=%d\n", played);
1352 hw->ts_helper += played;
1353 audio_capture_mix_and_clear (hw, prev_rpos, played);
1356 cleanup_required = 0;
1357 for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) {
1358 if (!sw->active && sw->empty) {
1362 if (audio_bug (AUDIO_FUNC, played > sw->total_hw_samples_mixed)) {
1363 dolog ("played=%d sw->total_hw_samples_mixed=%d\n",
1364 played, sw->total_hw_samples_mixed);
1365 played = sw->total_hw_samples_mixed;
1368 sw->total_hw_samples_mixed -= played;
1370 if (!sw->total_hw_samples_mixed) {
1372 cleanup_required |= !sw->active && !sw->callback.fn;
1376 free = audio_get_free (sw);
1378 sw->callback.fn (sw->callback.opaque, free);
1383 if (cleanup_required) {
1386 sw = hw->sw_head.lh_first;
1388 sw1 = sw->entries.le_next;
1389 if (!sw->active && !sw->callback.fn) {
1391 dolog ("Finishing with old voice\n");
1393 audio_close_out (s, sw);
1401 static void audio_run_in (AudioState *s)
1403 HWVoiceIn *hw = NULL;
1405 while ((hw = audio_pcm_hw_find_any_enabled_in (s, hw))) {
1409 captured = hw->pcm_ops->run_in (hw);
1411 min = audio_pcm_hw_find_min_in (hw);
1412 hw->total_samples_captured += captured - min;
1413 hw->ts_helper += captured;
1415 for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) {
1416 sw->total_hw_samples_acquired -= min;
1421 avail = audio_get_avail (sw);
1423 sw->callback.fn (sw->callback.opaque, avail);
1430 static void audio_run_capture (AudioState *s)
1432 CaptureVoiceOut *cap;
1434 for (cap = s->cap_head.lh_first; cap; cap = cap->entries.le_next) {
1435 int live, rpos, captured;
1436 HWVoiceOut *hw = &cap->hw;
1439 captured = live = audio_pcm_hw_get_live_out (hw);
1442 int left = hw->samples - rpos;
1443 int to_capture = audio_MIN (live, left);
1444 struct st_sample *src;
1445 struct capture_callback *cb;
1447 src = hw->mix_buf + rpos;
1448 hw->clip (cap->buf, src, to_capture);
1449 mixeng_clear (src, to_capture);
1451 for (cb = cap->cb_head.lh_first; cb; cb = cb->entries.le_next) {
1452 cb->ops.capture (cb->opaque, cap->buf,
1453 to_capture << hw->info.shift);
1455 rpos = (rpos + to_capture) % hw->samples;
1460 for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) {
1461 if (!sw->active && sw->empty) {
1465 if (audio_bug (AUDIO_FUNC, captured > sw->total_hw_samples_mixed)) {
1466 dolog ("captured=%d sw->total_hw_samples_mixed=%d\n",
1467 captured, sw->total_hw_samples_mixed);
1468 captured = sw->total_hw_samples_mixed;
1471 sw->total_hw_samples_mixed -= captured;
1472 sw->empty = sw->total_hw_samples_mixed == 0;
1477 static void audio_timer (void *opaque)
1479 AudioState *s = opaque;
1483 audio_run_capture (s);
1485 qemu_mod_timer (s->ts, qemu_get_clock (vm_clock) + conf.period.ticks);
1488 static struct audio_option audio_options[] = {
1490 {"DAC_FIXED_SETTINGS", AUD_OPT_BOOL, &conf.fixed_out.enabled,
1491 "Use fixed settings for host DAC", NULL, 0},
1493 {"DAC_FIXED_FREQ", AUD_OPT_INT, &conf.fixed_out.settings.freq,
1494 "Frequency for fixed host DAC", NULL, 0},
1496 {"DAC_FIXED_FMT", AUD_OPT_FMT, &conf.fixed_out.settings.fmt,
1497 "Format for fixed host DAC", NULL, 0},
1499 {"DAC_FIXED_CHANNELS", AUD_OPT_INT, &conf.fixed_out.settings.nchannels,
1500 "Number of channels for fixed DAC (1 - mono, 2 - stereo)", NULL, 0},
1502 {"DAC_VOICES", AUD_OPT_INT, &conf.fixed_out.nb_voices,
1503 "Number of voices for DAC", NULL, 0},
1506 {"ADC_FIXED_SETTINGS", AUD_OPT_BOOL, &conf.fixed_in.enabled,
1507 "Use fixed settings for host ADC", NULL, 0},
1509 {"ADC_FIXED_FREQ", AUD_OPT_INT, &conf.fixed_in.settings.freq,
1510 "Frequency for fixed host ADC", NULL, 0},
1512 {"ADC_FIXED_FMT", AUD_OPT_FMT, &conf.fixed_in.settings.fmt,
1513 "Format for fixed host ADC", NULL, 0},
1515 {"ADC_FIXED_CHANNELS", AUD_OPT_INT, &conf.fixed_in.settings.nchannels,
1516 "Number of channels for fixed ADC (1 - mono, 2 - stereo)", NULL, 0},
1518 {"ADC_VOICES", AUD_OPT_INT, &conf.fixed_in.nb_voices,
1519 "Number of voices for ADC", NULL, 0},
1522 {"TIMER_PERIOD", AUD_OPT_INT, &conf.period.hertz,
1523 "Timer period in HZ (0 - use lowest possible)", NULL, 0},
1525 {"PLIVE", AUD_OPT_BOOL, &conf.plive,
1526 "(undocumented)", NULL, 0},
1528 {"LOG_TO_MONITOR", AUD_OPT_BOOL, &conf.log_to_monitor,
1529 "print logging messages to monitor instead of stderr", NULL, 0},
1531 {NULL, 0, NULL, NULL, NULL, 0}
1534 static void audio_pp_nb_voices (const char *typ, int nb)
1538 printf ("Does not support %s\n", typ);
1541 printf ("One %s voice\n", typ);
1544 printf ("Theoretically supports many %s voices\n", typ);
1547 printf ("Theoretically supports upto %d %s voices\n", nb, typ);
1553 void AUD_help (void)
1557 audio_process_options ("AUDIO", audio_options);
1558 for (i = 0; i < ARRAY_SIZE (drvtab); i++) {
1559 struct audio_driver *d = drvtab[i];
1561 audio_process_options (d->name, d->options);
1565 printf ("Audio options:\n");
1566 audio_print_options ("AUDIO", audio_options);
1569 printf ("Available drivers:\n");
1571 for (i = 0; i < ARRAY_SIZE (drvtab); i++) {
1572 struct audio_driver *d = drvtab[i];
1574 printf ("Name: %s\n", d->name);
1575 printf ("Description: %s\n", d->descr);
1577 audio_pp_nb_voices ("playback", d->max_voices_out);
1578 audio_pp_nb_voices ("capture", d->max_voices_in);
1581 printf ("Options:\n");
1582 audio_print_options (d->name, d->options);
1585 printf ("No options\n");
1591 "Options are settable through environment variables.\n"
1594 " set QEMU_AUDIO_DRV=wav\n"
1595 " set QEMU_WAV_PATH=c:\\tune.wav\n"
1597 " export QEMU_AUDIO_DRV=wav\n"
1598 " export QEMU_WAV_PATH=$HOME/tune.wav\n"
1599 "(for csh replace export with setenv in the above)\n"
1605 static int audio_driver_init (AudioState *s, struct audio_driver *drv)
1608 audio_process_options (drv->name, drv->options);
1610 s->drv_opaque = drv->init ();
1612 if (s->drv_opaque) {
1613 audio_init_nb_voices_out (s, drv);
1614 audio_init_nb_voices_in (s, drv);
1619 dolog ("Could not init `%s' audio driver\n", drv->name);
1624 static void audio_vm_change_state_handler (void *opaque, int running,
1627 AudioState *s = opaque;
1628 HWVoiceOut *hwo = NULL;
1629 HWVoiceIn *hwi = NULL;
1630 int op = running ? VOICE_ENABLE : VOICE_DISABLE;
1632 s->vm_running = running;
1633 while ((hwo = audio_pcm_hw_find_any_enabled_out (s, hwo))) {
1634 hwo->pcm_ops->ctl_out (hwo, op);
1637 while ((hwi = audio_pcm_hw_find_any_enabled_in (s, hwi))) {
1638 hwi->pcm_ops->ctl_in (hwi, op);
1642 static void audio_atexit (void)
1644 AudioState *s = &glob_audio_state;
1645 HWVoiceOut *hwo = NULL;
1646 HWVoiceIn *hwi = NULL;
1648 while ((hwo = audio_pcm_hw_find_any_enabled_out (s, hwo))) {
1651 hwo->pcm_ops->ctl_out (hwo, VOICE_DISABLE);
1652 hwo->pcm_ops->fini_out (hwo);
1654 for (sc = hwo->cap_head.lh_first; sc; sc = sc->entries.le_next) {
1655 CaptureVoiceOut *cap = sc->cap;
1656 struct capture_callback *cb;
1658 for (cb = cap->cb_head.lh_first; cb; cb = cb->entries.le_next) {
1659 cb->ops.destroy (cb->opaque);
1664 while ((hwi = audio_pcm_hw_find_any_enabled_in (s, hwi))) {
1665 hwi->pcm_ops->ctl_in (hwi, VOICE_DISABLE);
1666 hwi->pcm_ops->fini_in (hwi);
1670 s->drv->fini (s->drv_opaque);
1674 static void audio_save (QEMUFile *f, void *opaque)
1680 static int audio_load (QEMUFile *f, void *opaque, int version_id)
1685 if (version_id != 1) {
1692 void AUD_register_card (AudioState *s, const char *name, QEMUSoundCard *card)
1695 card->name = qemu_strdup (name);
1696 memset (&card->entries, 0, sizeof (card->entries));
1697 LIST_INSERT_HEAD (&s->card_head, card, entries);
1700 void AUD_remove_card (QEMUSoundCard *card)
1702 LIST_REMOVE (card, entries);
1704 qemu_free (card->name);
1707 AudioState *AUD_init (void)
1711 const char *drvname;
1712 AudioState *s = &glob_audio_state;
1718 LIST_INIT (&s->hw_head_out);
1719 LIST_INIT (&s->hw_head_in);
1720 LIST_INIT (&s->cap_head);
1721 atexit (audio_atexit);
1723 s->ts = qemu_new_timer (vm_clock, audio_timer, s);
1725 hw_error("Could not create audio timer\n");
1728 audio_process_options ("AUDIO", audio_options);
1730 s->nb_hw_voices_out = conf.fixed_out.nb_voices;
1731 s->nb_hw_voices_in = conf.fixed_in.nb_voices;
1733 if (s->nb_hw_voices_out <= 0) {
1734 dolog ("Bogus number of playback voices %d, setting to 1\n",
1735 s->nb_hw_voices_out);
1736 s->nb_hw_voices_out = 1;
1739 if (s->nb_hw_voices_in <= 0) {
1740 dolog ("Bogus number of capture voices %d, setting to 0\n",
1741 s->nb_hw_voices_in);
1742 s->nb_hw_voices_in = 0;
1747 drvname = audio_get_conf_str ("QEMU_AUDIO_DRV", NULL, &def);
1753 for (i = 0; i < ARRAY_SIZE (drvtab); i++) {
1754 if (!strcmp (drvname, drvtab[i]->name)) {
1755 done = !audio_driver_init (s, drvtab[i]);
1762 dolog ("Unknown audio driver `%s'\n", drvname);
1763 dolog ("Run with -audio-help to list available drivers\n");
1768 for (i = 0; !done && i < ARRAY_SIZE (drvtab); i++) {
1769 if (drvtab[i]->can_be_default) {
1770 done = !audio_driver_init (s, drvtab[i]);
1776 done = !audio_driver_init (s, &no_audio_driver);
1778 hw_error("Could not initialize audio subsystem\n");
1781 dolog ("warning: Using timer based audio emulation\n");
1785 VMChangeStateEntry *e;
1787 if (conf.period.hertz <= 0) {
1788 if (conf.period.hertz < 0) {
1789 dolog ("warning: Timer period is negative - %d "
1790 "treating as zero\n",
1793 conf.period.ticks = 1;
1795 conf.period.ticks = ticks_per_sec / conf.period.hertz;
1798 e = qemu_add_vm_change_state_handler (audio_vm_change_state_handler, s);
1800 dolog ("warning: Could not register change state handler\n"
1801 "(Audio can continue looping even after stopping the VM)\n");
1804 LIST_INIT (&s->card_head);
1805 register_savevm ("audio", 0, 1, audio_save, audio_load, s);
1806 qemu_mod_timer (s->ts, qemu_get_clock (vm_clock) + conf.period.ticks);
1810 CaptureVoiceOut *AUD_add_capture (
1812 struct audsettings *as,
1813 struct audio_capture_ops *ops,
1817 CaptureVoiceOut *cap;
1818 struct capture_callback *cb;
1822 s = &glob_audio_state;
1825 if (audio_validate_settings (as)) {
1826 dolog ("Invalid settings were passed when trying to add capture\n");
1827 audio_print_settings (as);
1831 cb = audio_calloc (AUDIO_FUNC, 1, sizeof (*cb));
1833 dolog ("Could not allocate capture callback information, size %zu\n",
1838 cb->opaque = cb_opaque;
1840 cap = audio_pcm_capture_find_specific (s, as);
1842 LIST_INSERT_HEAD (&cap->cb_head, cb, entries);
1847 CaptureVoiceOut *cap;
1849 cap = audio_calloc (AUDIO_FUNC, 1, sizeof (*cap));
1851 dolog ("Could not allocate capture voice, size %zu\n",
1857 LIST_INIT (&hw->sw_head);
1858 LIST_INIT (&cap->cb_head);
1860 /* XXX find a more elegant way */
1861 hw->samples = 4096 * 4;
1862 hw->mix_buf = audio_calloc (AUDIO_FUNC, hw->samples,
1863 sizeof (struct st_sample));
1865 dolog ("Could not allocate capture mix buffer (%d samples)\n",
1870 audio_pcm_init_info (&hw->info, as);
1872 cap->buf = audio_calloc (AUDIO_FUNC, hw->samples, 1 << hw->info.shift);
1874 dolog ("Could not allocate capture buffer "
1875 "(%d samples, each %d bytes)\n",
1876 hw->samples, 1 << hw->info.shift);
1880 hw->clip = mixeng_clip
1881 [hw->info.nchannels == 2]
1883 [hw->info.swap_endianness]
1884 [audio_bits_to_index (hw->info.bits)];
1886 LIST_INSERT_HEAD (&s->cap_head, cap, entries);
1887 LIST_INSERT_HEAD (&cap->cb_head, cb, entries);
1890 while ((hw = audio_pcm_hw_find_any_out (s, hw))) {
1891 audio_attach_capture (s, hw);
1896 qemu_free (cap->hw.mix_buf);
1906 void AUD_del_capture (CaptureVoiceOut *cap, void *cb_opaque)
1908 struct capture_callback *cb;
1910 for (cb = cap->cb_head.lh_first; cb; cb = cb->entries.le_next) {
1911 if (cb->opaque == cb_opaque) {
1912 cb->ops.destroy (cb_opaque);
1913 LIST_REMOVE (cb, entries);
1916 if (!cap->cb_head.lh_first) {
1917 SWVoiceOut *sw = cap->hw.sw_head.lh_first, *sw1;
1920 SWVoiceCap *sc = (SWVoiceCap *) sw;
1921 #ifdef DEBUG_CAPTURE
1922 dolog ("freeing %s\n", sw->name);
1925 sw1 = sw->entries.le_next;
1927 st_rate_stop (sw->rate);
1930 LIST_REMOVE (sw, entries);
1931 LIST_REMOVE (sc, entries);
1935 LIST_REMOVE (cap, entries);
1943 void AUD_set_volume_out (SWVoiceOut *sw, int mute, uint8_t lvol, uint8_t rvol)
1946 sw->vol.mute = mute;
1947 sw->vol.l = nominal_volume.l * lvol / 255;
1948 sw->vol.r = nominal_volume.r * rvol / 255;
1952 void AUD_set_volume_in (SWVoiceIn *sw, int mute, uint8_t lvol, uint8_t rvol)
1955 sw->vol.mute = mute;
1956 sw->vol.l = nominal_volume.l * lvol / 255;
1957 sw->vol.r = nominal_volume.r * rvol / 255;