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
24 #include "qemu/osdep.h"
27 #include "monitor/monitor.h"
28 #include "qemu/timer.h"
29 #include "sysemu/sysemu.h"
31 #define AUDIO_CAP "audio"
32 #include "audio_int.h"
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;
72 .fixed_out = { /* DAC fixed settings */
80 .endianness = AUDIO_HOST_ENDIANNESS,
84 .fixed_in = { /* ADC fixed settings */
92 .endianness = AUDIO_HOST_ENDIANNESS,
96 .period = { .hertz = 100 },
101 static AudioState glob_audio_state;
103 const struct mixeng_volume nominal_volume = {
114 #ifdef AUDIO_IS_FLAWLESS_AND_NO_CHECKS_ARE_REQURIED
117 static void audio_print_options (const char *prefix,
118 struct audio_option *opt);
120 int audio_bug (const char *funcname, int cond)
125 AUD_log (NULL, "A bug was just triggered in %s\n", funcname);
127 struct audio_driver *d;
130 AUD_log (NULL, "Save all your work and restart without audio\n");
132 AUD_log (NULL, "I am sorry\n");
133 d = glob_audio_state.drv;
135 audio_print_options (d->name, d->options);
138 AUD_log (NULL, "Context:\n");
140 #if defined AUDIO_BREAKPOINT_ON_BUG
141 # if defined HOST_I386
142 # if defined __GNUC__
144 # elif defined _MSC_VER
159 static inline int audio_bits_to_index (int bits)
172 audio_bug ("bits_to_index", 1);
173 AUD_log (NULL, "invalid bits %d\n", bits);
178 void *audio_calloc (const char *funcname, int nmemb, size_t size)
184 cond = !nmemb || !size;
188 if (audio_bug ("audio_calloc", cond)) {
189 AUD_log (NULL, "%s passed invalid arguments to audio_calloc\n",
191 AUD_log (NULL, "nmemb=%d size=%zu (len=%zu)\n", nmemb, size, len);
195 return g_malloc0 (len);
198 static char *audio_alloc_prefix (const char *s)
200 const char qemu_prefix[] = "QEMU_";
209 r = g_malloc (len + sizeof (qemu_prefix));
211 u = r + sizeof (qemu_prefix) - 1;
213 pstrcpy (r, len + sizeof (qemu_prefix), qemu_prefix);
214 pstrcat (r, len + sizeof (qemu_prefix), s);
216 for (i = 0; i < len; ++i) {
217 u[i] = qemu_toupper(u[i]);
223 static const char *audio_audfmt_to_string (audfmt_e fmt)
245 dolog ("Bogus audfmt %d returning S16\n", fmt);
249 static audfmt_e audio_string_to_audfmt (const char *s, audfmt_e defval,
252 if (!strcasecmp (s, "u8")) {
256 else if (!strcasecmp (s, "u16")) {
260 else if (!strcasecmp (s, "u32")) {
264 else if (!strcasecmp (s, "s8")) {
268 else if (!strcasecmp (s, "s16")) {
272 else if (!strcasecmp (s, "s32")) {
277 dolog ("Bogus audio format `%s' using %s\n",
278 s, audio_audfmt_to_string (defval));
284 static audfmt_e audio_get_conf_fmt (const char *envname,
288 const char *var = getenv (envname);
293 return audio_string_to_audfmt (var, defval, defaultp);
296 static int audio_get_conf_int (const char *key, int defval, int *defaultp)
301 strval = getenv (key);
313 static const char *audio_get_conf_str (const char *key,
317 const char *val = getenv (key);
328 void AUD_vlog (const char *cap, const char *fmt, va_list ap)
331 fprintf(stderr, "%s: ", cap);
334 vfprintf(stderr, fmt, ap);
337 void AUD_log (const char *cap, const char *fmt, ...)
342 AUD_vlog (cap, fmt, ap);
346 static void audio_print_options (const char *prefix,
347 struct audio_option *opt)
352 dolog ("No prefix specified\n");
357 dolog ("No options\n");
361 uprefix = audio_alloc_prefix (prefix);
363 for (; opt->name; opt++) {
364 const char *state = "default";
365 printf (" %s_%s: ", uprefix, opt->name);
367 if (opt->overriddenp && *opt->overriddenp) {
374 int *intp = opt->valp;
375 printf ("boolean, %s = %d\n", state, *intp ? 1 : 0);
381 int *intp = opt->valp;
382 printf ("integer, %s = %d\n", state, *intp);
388 audfmt_e *fmtp = opt->valp;
390 "format, %s = %s, (one of: U8 S8 U16 S16 U32 S32)\n",
392 audio_audfmt_to_string (*fmtp)
399 const char **strp = opt->valp;
400 printf ("string, %s = %s\n",
402 *strp ? *strp : "(not set)");
408 dolog ("Bad value tag for option %s_%s %d\n",
409 uprefix, opt->name, opt->tag);
412 printf (" %s\n", opt->descr);
418 static void audio_process_options (const char *prefix,
419 struct audio_option *opt)
422 const char qemu_prefix[] = "QEMU_";
423 size_t preflen, optlen;
425 if (audio_bug (AUDIO_FUNC, !prefix)) {
426 dolog ("prefix = NULL\n");
430 if (audio_bug (AUDIO_FUNC, !opt)) {
431 dolog ("opt = NULL\n");
435 preflen = strlen (prefix);
437 for (; opt->name; opt++) {
442 dolog ("Option value pointer for `%s' is not set\n",
447 len = strlen (opt->name);
448 /* len of opt->name + len of prefix + size of qemu_prefix
449 * (includes trailing zero) + zero + underscore (on behalf of
451 optlen = len + preflen + sizeof (qemu_prefix) + 1;
452 optname = g_malloc (optlen);
454 pstrcpy (optname, optlen, qemu_prefix);
456 /* copy while upper-casing, including trailing zero */
457 for (i = 0; i <= preflen; ++i) {
458 optname[i + sizeof (qemu_prefix) - 1] = qemu_toupper(prefix[i]);
460 pstrcat (optname, optlen, "_");
461 pstrcat (optname, optlen, opt->name);
468 int *intp = opt->valp;
469 *intp = audio_get_conf_int (optname, *intp, &def);
475 audfmt_e *fmtp = opt->valp;
476 *fmtp = audio_get_conf_fmt (optname, *fmtp, &def);
482 const char **strp = opt->valp;
483 *strp = audio_get_conf_str (optname, *strp, &def);
488 dolog ("Bad value tag for option `%s' - %d\n",
493 if (!opt->overriddenp) {
494 opt->overriddenp = &opt->overridden;
496 *opt->overriddenp = !def;
501 static void audio_print_settings (struct audsettings *as)
503 dolog ("frequency=%d nchannels=%d fmt=", as->freq, as->nchannels);
507 AUD_log (NULL, "S8");
510 AUD_log (NULL, "U8");
513 AUD_log (NULL, "S16");
516 AUD_log (NULL, "U16");
519 AUD_log (NULL, "S32");
522 AUD_log (NULL, "U32");
525 AUD_log (NULL, "invalid(%d)", as->fmt);
529 AUD_log (NULL, " endianness=");
530 switch (as->endianness) {
532 AUD_log (NULL, "little");
535 AUD_log (NULL, "big");
538 AUD_log (NULL, "invalid");
541 AUD_log (NULL, "\n");
544 static int audio_validate_settings (struct audsettings *as)
548 invalid = as->nchannels != 1 && as->nchannels != 2;
549 invalid |= as->endianness != 0 && as->endianness != 1;
564 invalid |= as->freq <= 0;
565 return invalid ? -1 : 0;
568 static int audio_pcm_info_eq (struct audio_pcm_info *info, struct audsettings *as)
570 int bits = 8, sign = 0;
593 return info->freq == as->freq
594 && info->nchannels == as->nchannels
595 && info->sign == sign
596 && info->bits == bits
597 && info->swap_endianness == (as->endianness != AUDIO_HOST_ENDIANNESS);
600 void audio_pcm_init_info (struct audio_pcm_info *info, struct audsettings *as)
602 int bits = 8, sign = 0, shift = 0;
625 info->freq = as->freq;
628 info->nchannels = as->nchannels;
629 info->shift = (as->nchannels == 2) + shift;
630 info->align = (1 << info->shift) - 1;
631 info->bytes_per_second = info->freq << info->shift;
632 info->swap_endianness = (as->endianness != AUDIO_HOST_ENDIANNESS);
635 void audio_pcm_info_clear_buf (struct audio_pcm_info *info, void *buf, int len)
642 memset (buf, 0x00, len << info->shift);
645 switch (info->bits) {
647 memset (buf, 0x80, len << info->shift);
654 int shift = info->nchannels - 1;
657 if (info->swap_endianness) {
661 for (i = 0; i < len << shift; i++) {
671 int shift = info->nchannels - 1;
672 int32_t s = INT32_MAX;
674 if (info->swap_endianness) {
678 for (i = 0; i < len << shift; i++) {
685 AUD_log (NULL, "audio_pcm_info_clear_buf: invalid bits %d\n",
695 static void noop_conv (struct st_sample *dst, const void *src, int samples)
702 static CaptureVoiceOut *audio_pcm_capture_find_specific (
703 struct audsettings *as
706 CaptureVoiceOut *cap;
707 AudioState *s = &glob_audio_state;
709 for (cap = s->cap_head.lh_first; cap; cap = cap->entries.le_next) {
710 if (audio_pcm_info_eq (&cap->hw.info, as)) {
717 static void audio_notify_capture (CaptureVoiceOut *cap, audcnotification_e cmd)
719 struct capture_callback *cb;
722 dolog ("notification %d sent\n", cmd);
724 for (cb = cap->cb_head.lh_first; cb; cb = cb->entries.le_next) {
725 cb->ops.notify (cb->opaque, cmd);
729 static void audio_capture_maybe_changed (CaptureVoiceOut *cap, int enabled)
731 if (cap->hw.enabled != enabled) {
732 audcnotification_e cmd;
733 cap->hw.enabled = enabled;
734 cmd = enabled ? AUD_CNOTIFY_ENABLE : AUD_CNOTIFY_DISABLE;
735 audio_notify_capture (cap, cmd);
739 static void audio_recalc_and_notify_capture (CaptureVoiceOut *cap)
741 HWVoiceOut *hw = &cap->hw;
745 for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) {
751 audio_capture_maybe_changed (cap, enabled);
754 static void audio_detach_capture (HWVoiceOut *hw)
756 SWVoiceCap *sc = hw->cap_head.lh_first;
759 SWVoiceCap *sc1 = sc->entries.le_next;
760 SWVoiceOut *sw = &sc->sw;
761 CaptureVoiceOut *cap = sc->cap;
762 int was_active = sw->active;
765 st_rate_stop (sw->rate);
769 QLIST_REMOVE (sw, entries);
770 QLIST_REMOVE (sc, entries);
773 /* We have removed soft voice from the capture:
774 this might have changed the overall status of the capture
775 since this might have been the only active voice */
776 audio_recalc_and_notify_capture (cap);
782 static int audio_attach_capture (HWVoiceOut *hw)
784 AudioState *s = &glob_audio_state;
785 CaptureVoiceOut *cap;
787 audio_detach_capture (hw);
788 for (cap = s->cap_head.lh_first; cap; cap = cap->entries.le_next) {
791 HWVoiceOut *hw_cap = &cap->hw;
793 sc = audio_calloc (AUDIO_FUNC, 1, sizeof (*sc));
795 dolog ("Could not allocate soft capture voice (%zu bytes)\n",
805 sw->active = hw->enabled;
806 sw->conv = noop_conv;
807 sw->ratio = ((int64_t) hw_cap->info.freq << 32) / sw->info.freq;
808 sw->vol = nominal_volume;
809 sw->rate = st_rate_start (sw->info.freq, hw_cap->info.freq);
811 dolog ("Could not start rate conversion for `%s'\n", SW_NAME (sw));
815 QLIST_INSERT_HEAD (&hw_cap->sw_head, sw, entries);
816 QLIST_INSERT_HEAD (&hw->cap_head, sc, entries);
818 sw->name = g_strdup_printf ("for %p %d,%d,%d",
819 hw, sw->info.freq, sw->info.bits,
821 dolog ("Added %s active = %d\n", sw->name, sw->active);
824 audio_capture_maybe_changed (cap, 1);
831 * Hard voice (capture)
833 static int audio_pcm_hw_find_min_in (HWVoiceIn *hw)
836 int m = hw->total_samples_captured;
838 for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) {
840 m = audio_MIN (m, sw->total_hw_samples_acquired);
846 int audio_pcm_hw_get_live_in (HWVoiceIn *hw)
848 int live = hw->total_samples_captured - audio_pcm_hw_find_min_in (hw);
849 if (audio_bug (AUDIO_FUNC, live < 0 || live > hw->samples)) {
850 dolog ("live=%d hw->samples=%d\n", live, hw->samples);
856 int audio_pcm_hw_clip_out (HWVoiceOut *hw, void *pcm_buf,
857 int live, int pending)
859 int left = hw->samples - pending;
860 int len = audio_MIN (left, live);
864 struct st_sample *src = hw->mix_buf + hw->rpos;
865 uint8_t *dst = advance (pcm_buf, hw->rpos << hw->info.shift);
866 int samples_till_end_of_buf = hw->samples - hw->rpos;
867 int samples_to_clip = audio_MIN (len, samples_till_end_of_buf);
869 hw->clip (dst, src, samples_to_clip);
871 hw->rpos = (hw->rpos + samples_to_clip) % hw->samples;
872 len -= samples_to_clip;
873 clipped += samples_to_clip;
879 * Soft voice (capture)
881 static int audio_pcm_sw_get_rpos_in (SWVoiceIn *sw)
883 HWVoiceIn *hw = sw->hw;
884 int live = hw->total_samples_captured - sw->total_hw_samples_acquired;
887 if (audio_bug (AUDIO_FUNC, live < 0 || live > hw->samples)) {
888 dolog ("live=%d hw->samples=%d\n", live, hw->samples);
892 rpos = hw->wpos - live;
897 return hw->samples + rpos;
901 int audio_pcm_sw_read (SWVoiceIn *sw, void *buf, int size)
903 HWVoiceIn *hw = sw->hw;
904 int samples, live, ret = 0, swlim, isamp, osamp, rpos, total = 0;
905 struct st_sample *src, *dst = sw->buf;
907 rpos = audio_pcm_sw_get_rpos_in (sw) % hw->samples;
909 live = hw->total_samples_captured - sw->total_hw_samples_acquired;
910 if (audio_bug (AUDIO_FUNC, live < 0 || live > hw->samples)) {
911 dolog ("live_in=%d hw->samples=%d\n", live, hw->samples);
915 samples = size >> sw->info.shift;
920 swlim = (live * sw->ratio) >> 32;
921 swlim = audio_MIN (swlim, samples);
924 src = hw->conv_buf + rpos;
925 isamp = hw->wpos - rpos;
928 isamp = hw->samples - rpos;
936 if (audio_bug (AUDIO_FUNC, osamp < 0)) {
937 dolog ("osamp=%d\n", osamp);
941 st_rate_flow (sw->rate, src, dst, &isamp, &osamp);
943 rpos = (rpos + isamp) % hw->samples;
949 if (!(hw->ctl_caps & VOICE_VOLUME_CAP)) {
950 mixeng_volume (sw->buf, ret, &sw->vol);
953 sw->clip (buf, sw->buf, ret);
954 sw->total_hw_samples_acquired += total;
955 return ret << sw->info.shift;
959 * Hard voice (playback)
961 static int audio_pcm_hw_find_min_out (HWVoiceOut *hw, int *nb_livep)
967 for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) {
968 if (sw->active || !sw->empty) {
969 m = audio_MIN (m, sw->total_hw_samples_mixed);
978 static int audio_pcm_hw_get_live_out (HWVoiceOut *hw, int *nb_live)
983 smin = audio_pcm_hw_find_min_out (hw, &nb_live1);
991 if (audio_bug (AUDIO_FUNC, live < 0 || live > hw->samples)) {
992 dolog ("live=%d hw->samples=%d\n", live, hw->samples);
1001 * Soft voice (playback)
1003 int audio_pcm_sw_write (SWVoiceOut *sw, void *buf, int size)
1005 int hwsamples, samples, isamp, osamp, wpos, live, dead, left, swlim, blck;
1006 int ret = 0, pos = 0, total = 0;
1012 hwsamples = sw->hw->samples;
1014 live = sw->total_hw_samples_mixed;
1015 if (audio_bug (AUDIO_FUNC, live < 0 || live > hwsamples)){
1016 dolog ("live=%d hw->samples=%d\n", live, hwsamples);
1020 if (live == hwsamples) {
1022 dolog ("%s is full %d\n", sw->name, live);
1027 wpos = (sw->hw->rpos + live) % hwsamples;
1028 samples = size >> sw->info.shift;
1030 dead = hwsamples - live;
1031 swlim = ((int64_t) dead << 32) / sw->ratio;
1032 swlim = audio_MIN (swlim, samples);
1034 sw->conv (sw->buf, buf, swlim);
1036 if (!(sw->hw->ctl_caps & VOICE_VOLUME_CAP)) {
1037 mixeng_volume (sw->buf, swlim, &sw->vol);
1042 dead = hwsamples - live;
1043 left = hwsamples - wpos;
1044 blck = audio_MIN (dead, left);
1053 sw->hw->mix_buf + wpos,
1061 wpos = (wpos + osamp) % hwsamples;
1065 sw->total_hw_samples_mixed += total;
1066 sw->empty = sw->total_hw_samples_mixed == 0;
1070 "%s: write size %d ret %d total sw %d\n",
1072 size >> sw->info.shift,
1074 sw->total_hw_samples_mixed
1078 return ret << sw->info.shift;
1082 static void audio_pcm_print_info (const char *cap, struct audio_pcm_info *info)
1084 dolog ("%s: bits %d, sign %d, freq %d, nchan %d\n",
1085 cap, info->bits, info->sign, info->freq, info->nchannels);
1090 #include "audio_template.h"
1092 #include "audio_template.h"
1097 static int audio_is_timer_needed (void)
1099 HWVoiceIn *hwi = NULL;
1100 HWVoiceOut *hwo = NULL;
1102 while ((hwo = audio_pcm_hw_find_any_enabled_out (hwo))) {
1103 if (!hwo->poll_mode) return 1;
1105 while ((hwi = audio_pcm_hw_find_any_enabled_in (hwi))) {
1106 if (!hwi->poll_mode) return 1;
1111 static void audio_reset_timer (AudioState *s)
1113 if (audio_is_timer_needed ()) {
1115 qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) + conf.period.ticks);
1122 static void audio_timer (void *opaque)
1124 audio_run ("timer");
1125 audio_reset_timer (opaque);
1131 int AUD_write (SWVoiceOut *sw, void *buf, int size)
1136 /* XXX: Consider options */
1140 if (!sw->hw->enabled) {
1141 dolog ("Writing to disabled voice %s\n", SW_NAME (sw));
1145 bytes = sw->hw->pcm_ops->write (sw, buf, size);
1149 int AUD_read (SWVoiceIn *sw, void *buf, int size)
1154 /* XXX: Consider options */
1158 if (!sw->hw->enabled) {
1159 dolog ("Reading from disabled voice %s\n", SW_NAME (sw));
1163 bytes = sw->hw->pcm_ops->read (sw, buf, size);
1167 int AUD_get_buffer_size_out (SWVoiceOut *sw)
1169 return sw->hw->samples << sw->hw->info.shift;
1172 void AUD_set_active_out (SWVoiceOut *sw, int on)
1181 if (sw->active != on) {
1182 AudioState *s = &glob_audio_state;
1183 SWVoiceOut *temp_sw;
1187 hw->pending_disable = 0;
1190 if (s->vm_running) {
1191 hw->pcm_ops->ctl_out (hw, VOICE_ENABLE, conf.try_poll_out);
1192 audio_reset_timer (s);
1200 for (temp_sw = hw->sw_head.lh_first; temp_sw;
1201 temp_sw = temp_sw->entries.le_next) {
1202 nb_active += temp_sw->active != 0;
1205 hw->pending_disable = nb_active == 1;
1209 for (sc = hw->cap_head.lh_first; sc; sc = sc->entries.le_next) {
1210 sc->sw.active = hw->enabled;
1212 audio_capture_maybe_changed (sc->cap, 1);
1219 void AUD_set_active_in (SWVoiceIn *sw, int on)
1228 if (sw->active != on) {
1229 AudioState *s = &glob_audio_state;
1235 if (s->vm_running) {
1236 hw->pcm_ops->ctl_in (hw, VOICE_ENABLE, conf.try_poll_in);
1237 audio_reset_timer (s);
1240 sw->total_hw_samples_acquired = hw->total_samples_captured;
1246 for (temp_sw = hw->sw_head.lh_first; temp_sw;
1247 temp_sw = temp_sw->entries.le_next) {
1248 nb_active += temp_sw->active != 0;
1251 if (nb_active == 1) {
1253 hw->pcm_ops->ctl_in (hw, VOICE_DISABLE);
1261 static int audio_get_avail (SWVoiceIn *sw)
1269 live = sw->hw->total_samples_captured - sw->total_hw_samples_acquired;
1270 if (audio_bug (AUDIO_FUNC, live < 0 || live > sw->hw->samples)) {
1271 dolog ("live=%d sw->hw->samples=%d\n", live, sw->hw->samples);
1276 "%s: get_avail live %d ret %" PRId64 "\n",
1278 live, (((int64_t) live << 32) / sw->ratio) << sw->info.shift
1281 return (((int64_t) live << 32) / sw->ratio) << sw->info.shift;
1284 static int audio_get_free (SWVoiceOut *sw)
1292 live = sw->total_hw_samples_mixed;
1294 if (audio_bug (AUDIO_FUNC, live < 0 || live > sw->hw->samples)) {
1295 dolog ("live=%d sw->hw->samples=%d\n", live, sw->hw->samples);
1299 dead = sw->hw->samples - live;
1302 dolog ("%s: get_free live %d dead %d ret %" PRId64 "\n",
1304 live, dead, (((int64_t) dead << 32) / sw->ratio) << sw->info.shift);
1307 return (((int64_t) dead << 32) / sw->ratio) << sw->info.shift;
1310 static void audio_capture_mix_and_clear (HWVoiceOut *hw, int rpos, int samples)
1317 for (sc = hw->cap_head.lh_first; sc; sc = sc->entries.le_next) {
1318 SWVoiceOut *sw = &sc->sw;
1323 int till_end_of_hw = hw->samples - rpos2;
1324 int to_write = audio_MIN (till_end_of_hw, n);
1325 int bytes = to_write << hw->info.shift;
1328 sw->buf = hw->mix_buf + rpos2;
1329 written = audio_pcm_sw_write (sw, NULL, bytes);
1330 if (written - bytes) {
1331 dolog ("Could not mix %d bytes into a capture "
1332 "buffer, mixed %d\n",
1337 rpos2 = (rpos2 + to_write) % hw->samples;
1342 n = audio_MIN (samples, hw->samples - rpos);
1343 mixeng_clear (hw->mix_buf + rpos, n);
1344 mixeng_clear (hw->mix_buf, samples - n);
1347 static void audio_run_out (AudioState *s)
1349 HWVoiceOut *hw = NULL;
1352 while ((hw = audio_pcm_hw_find_any_enabled_out (hw))) {
1354 int live, free, nb_live, cleanup_required, prev_rpos;
1356 live = audio_pcm_hw_get_live_out (hw, &nb_live);
1361 if (audio_bug (AUDIO_FUNC, live < 0 || live > hw->samples)) {
1362 dolog ("live=%d hw->samples=%d\n", live, hw->samples);
1366 if (hw->pending_disable && !nb_live) {
1369 dolog ("Disabling voice\n");
1372 hw->pending_disable = 0;
1373 hw->pcm_ops->ctl_out (hw, VOICE_DISABLE);
1374 for (sc = hw->cap_head.lh_first; sc; sc = sc->entries.le_next) {
1376 audio_recalc_and_notify_capture (sc->cap);
1382 for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) {
1384 free = audio_get_free (sw);
1386 sw->callback.fn (sw->callback.opaque, free);
1393 prev_rpos = hw->rpos;
1394 played = hw->pcm_ops->run_out (hw, live);
1395 if (audio_bug (AUDIO_FUNC, hw->rpos >= hw->samples)) {
1396 dolog ("hw->rpos=%d hw->samples=%d played=%d\n",
1397 hw->rpos, hw->samples, played);
1402 dolog ("played=%d\n", played);
1406 hw->ts_helper += played;
1407 audio_capture_mix_and_clear (hw, prev_rpos, played);
1410 cleanup_required = 0;
1411 for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) {
1412 if (!sw->active && sw->empty) {
1416 if (audio_bug (AUDIO_FUNC, played > sw->total_hw_samples_mixed)) {
1417 dolog ("played=%d sw->total_hw_samples_mixed=%d\n",
1418 played, sw->total_hw_samples_mixed);
1419 played = sw->total_hw_samples_mixed;
1422 sw->total_hw_samples_mixed -= played;
1424 if (!sw->total_hw_samples_mixed) {
1426 cleanup_required |= !sw->active && !sw->callback.fn;
1430 free = audio_get_free (sw);
1432 sw->callback.fn (sw->callback.opaque, free);
1437 if (cleanup_required) {
1440 sw = hw->sw_head.lh_first;
1442 sw1 = sw->entries.le_next;
1443 if (!sw->active && !sw->callback.fn) {
1444 audio_close_out (sw);
1452 static void audio_run_in (AudioState *s)
1454 HWVoiceIn *hw = NULL;
1456 while ((hw = audio_pcm_hw_find_any_enabled_in (hw))) {
1460 captured = hw->pcm_ops->run_in (hw);
1462 min = audio_pcm_hw_find_min_in (hw);
1463 hw->total_samples_captured += captured - min;
1464 hw->ts_helper += captured;
1466 for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) {
1467 sw->total_hw_samples_acquired -= min;
1472 avail = audio_get_avail (sw);
1474 sw->callback.fn (sw->callback.opaque, avail);
1481 static void audio_run_capture (AudioState *s)
1483 CaptureVoiceOut *cap;
1485 for (cap = s->cap_head.lh_first; cap; cap = cap->entries.le_next) {
1486 int live, rpos, captured;
1487 HWVoiceOut *hw = &cap->hw;
1490 captured = live = audio_pcm_hw_get_live_out (hw, NULL);
1493 int left = hw->samples - rpos;
1494 int to_capture = audio_MIN (live, left);
1495 struct st_sample *src;
1496 struct capture_callback *cb;
1498 src = hw->mix_buf + rpos;
1499 hw->clip (cap->buf, src, to_capture);
1500 mixeng_clear (src, to_capture);
1502 for (cb = cap->cb_head.lh_first; cb; cb = cb->entries.le_next) {
1503 cb->ops.capture (cb->opaque, cap->buf,
1504 to_capture << hw->info.shift);
1506 rpos = (rpos + to_capture) % hw->samples;
1511 for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) {
1512 if (!sw->active && sw->empty) {
1516 if (audio_bug (AUDIO_FUNC, captured > sw->total_hw_samples_mixed)) {
1517 dolog ("captured=%d sw->total_hw_samples_mixed=%d\n",
1518 captured, sw->total_hw_samples_mixed);
1519 captured = sw->total_hw_samples_mixed;
1522 sw->total_hw_samples_mixed -= captured;
1523 sw->empty = sw->total_hw_samples_mixed == 0;
1528 void audio_run (const char *msg)
1530 AudioState *s = &glob_audio_state;
1534 audio_run_capture (s);
1537 static double prevtime;
1541 if (gettimeofday (&tv, NULL)) {
1542 perror ("audio_run: gettimeofday");
1546 currtime = tv.tv_sec + tv.tv_usec * 1e-6;
1547 dolog ("Elapsed since last %s: %f\n", msg, currtime - prevtime);
1548 prevtime = currtime;
1553 static struct audio_option audio_options[] = {
1556 .name = "DAC_FIXED_SETTINGS",
1557 .tag = AUD_OPT_BOOL,
1558 .valp = &conf.fixed_out.enabled,
1559 .descr = "Use fixed settings for host DAC"
1562 .name = "DAC_FIXED_FREQ",
1564 .valp = &conf.fixed_out.settings.freq,
1565 .descr = "Frequency for fixed host DAC"
1568 .name = "DAC_FIXED_FMT",
1570 .valp = &conf.fixed_out.settings.fmt,
1571 .descr = "Format for fixed host DAC"
1574 .name = "DAC_FIXED_CHANNELS",
1576 .valp = &conf.fixed_out.settings.nchannels,
1577 .descr = "Number of channels for fixed DAC (1 - mono, 2 - stereo)"
1580 .name = "DAC_VOICES",
1582 .valp = &conf.fixed_out.nb_voices,
1583 .descr = "Number of voices for DAC"
1586 .name = "DAC_TRY_POLL",
1587 .tag = AUD_OPT_BOOL,
1588 .valp = &conf.try_poll_out,
1589 .descr = "Attempt using poll mode for DAC"
1593 .name = "ADC_FIXED_SETTINGS",
1594 .tag = AUD_OPT_BOOL,
1595 .valp = &conf.fixed_in.enabled,
1596 .descr = "Use fixed settings for host ADC"
1599 .name = "ADC_FIXED_FREQ",
1601 .valp = &conf.fixed_in.settings.freq,
1602 .descr = "Frequency for fixed host ADC"
1605 .name = "ADC_FIXED_FMT",
1607 .valp = &conf.fixed_in.settings.fmt,
1608 .descr = "Format for fixed host ADC"
1611 .name = "ADC_FIXED_CHANNELS",
1613 .valp = &conf.fixed_in.settings.nchannels,
1614 .descr = "Number of channels for fixed ADC (1 - mono, 2 - stereo)"
1617 .name = "ADC_VOICES",
1619 .valp = &conf.fixed_in.nb_voices,
1620 .descr = "Number of voices for ADC"
1623 .name = "ADC_TRY_POLL",
1624 .tag = AUD_OPT_BOOL,
1625 .valp = &conf.try_poll_in,
1626 .descr = "Attempt using poll mode for ADC"
1630 .name = "TIMER_PERIOD",
1632 .valp = &conf.period.hertz,
1633 .descr = "Timer period in HZ (0 - use lowest possible)"
1635 { /* End of list */ }
1638 static void audio_pp_nb_voices (const char *typ, int nb)
1642 printf ("Does not support %s\n", typ);
1645 printf ("One %s voice\n", typ);
1648 printf ("Theoretically supports many %s voices\n", typ);
1651 printf ("Theoretically supports up to %d %s voices\n", nb, typ);
1657 void AUD_help (void)
1661 audio_process_options ("AUDIO", audio_options);
1662 for (i = 0; i < ARRAY_SIZE (drvtab); i++) {
1663 struct audio_driver *d = drvtab[i];
1665 audio_process_options (d->name, d->options);
1669 printf ("Audio options:\n");
1670 audio_print_options ("AUDIO", audio_options);
1673 printf ("Available drivers:\n");
1675 for (i = 0; i < ARRAY_SIZE (drvtab); i++) {
1676 struct audio_driver *d = drvtab[i];
1678 printf ("Name: %s\n", d->name);
1679 printf ("Description: %s\n", d->descr);
1681 audio_pp_nb_voices ("playback", d->max_voices_out);
1682 audio_pp_nb_voices ("capture", d->max_voices_in);
1685 printf ("Options:\n");
1686 audio_print_options (d->name, d->options);
1689 printf ("No options\n");
1695 "Options are settable through environment variables.\n"
1698 " set QEMU_AUDIO_DRV=wav\n"
1699 " set QEMU_WAV_PATH=c:\\tune.wav\n"
1701 " export QEMU_AUDIO_DRV=wav\n"
1702 " export QEMU_WAV_PATH=$HOME/tune.wav\n"
1703 "(for csh replace export with setenv in the above)\n"
1709 static int audio_driver_init (AudioState *s, struct audio_driver *drv)
1712 audio_process_options (drv->name, drv->options);
1714 s->drv_opaque = drv->init ();
1716 if (s->drv_opaque) {
1717 audio_init_nb_voices_out (drv);
1718 audio_init_nb_voices_in (drv);
1723 dolog ("Could not init `%s' audio driver\n", drv->name);
1728 static void audio_vm_change_state_handler (void *opaque, int running,
1731 AudioState *s = opaque;
1732 HWVoiceOut *hwo = NULL;
1733 HWVoiceIn *hwi = NULL;
1734 int op = running ? VOICE_ENABLE : VOICE_DISABLE;
1736 s->vm_running = running;
1737 while ((hwo = audio_pcm_hw_find_any_enabled_out (hwo))) {
1738 hwo->pcm_ops->ctl_out (hwo, op, conf.try_poll_out);
1741 while ((hwi = audio_pcm_hw_find_any_enabled_in (hwi))) {
1742 hwi->pcm_ops->ctl_in (hwi, op, conf.try_poll_in);
1744 audio_reset_timer (s);
1747 static void audio_atexit (void)
1749 AudioState *s = &glob_audio_state;
1750 HWVoiceOut *hwo = NULL;
1751 HWVoiceIn *hwi = NULL;
1753 while ((hwo = audio_pcm_hw_find_any_out (hwo))) {
1757 hwo->pcm_ops->ctl_out (hwo, VOICE_DISABLE);
1759 hwo->pcm_ops->fini_out (hwo);
1761 for (sc = hwo->cap_head.lh_first; sc; sc = sc->entries.le_next) {
1762 CaptureVoiceOut *cap = sc->cap;
1763 struct capture_callback *cb;
1765 for (cb = cap->cb_head.lh_first; cb; cb = cb->entries.le_next) {
1766 cb->ops.destroy (cb->opaque);
1771 while ((hwi = audio_pcm_hw_find_any_in (hwi))) {
1773 hwi->pcm_ops->ctl_in (hwi, VOICE_DISABLE);
1775 hwi->pcm_ops->fini_in (hwi);
1779 s->drv->fini (s->drv_opaque);
1783 static const VMStateDescription vmstate_audio = {
1786 .minimum_version_id = 1,
1787 .fields = (VMStateField[]) {
1788 VMSTATE_END_OF_LIST()
1792 static void audio_init (void)
1796 const char *drvname;
1797 VMChangeStateEntry *e;
1798 AudioState *s = &glob_audio_state;
1804 QLIST_INIT (&s->hw_head_out);
1805 QLIST_INIT (&s->hw_head_in);
1806 QLIST_INIT (&s->cap_head);
1807 atexit (audio_atexit);
1809 s->ts = timer_new_ns(QEMU_CLOCK_VIRTUAL, audio_timer, s);
1811 audio_process_options ("AUDIO", audio_options);
1813 s->nb_hw_voices_out = conf.fixed_out.nb_voices;
1814 s->nb_hw_voices_in = conf.fixed_in.nb_voices;
1816 if (s->nb_hw_voices_out <= 0) {
1817 dolog ("Bogus number of playback voices %d, setting to 1\n",
1818 s->nb_hw_voices_out);
1819 s->nb_hw_voices_out = 1;
1822 if (s->nb_hw_voices_in <= 0) {
1823 dolog ("Bogus number of capture voices %d, setting to 0\n",
1824 s->nb_hw_voices_in);
1825 s->nb_hw_voices_in = 0;
1830 drvname = audio_get_conf_str ("QEMU_AUDIO_DRV", NULL, &def);
1836 for (i = 0; i < ARRAY_SIZE (drvtab); i++) {
1837 if (!strcmp (drvname, drvtab[i]->name)) {
1838 done = !audio_driver_init (s, drvtab[i]);
1845 dolog ("Unknown audio driver `%s'\n", drvname);
1846 dolog ("Run with -audio-help to list available drivers\n");
1851 for (i = 0; !done && i < ARRAY_SIZE (drvtab); i++) {
1852 if (drvtab[i]->can_be_default) {
1853 done = !audio_driver_init (s, drvtab[i]);
1859 done = !audio_driver_init (s, &no_audio_driver);
1861 dolog("warning: Using timer based audio emulation\n");
1864 if (conf.period.hertz <= 0) {
1865 if (conf.period.hertz < 0) {
1866 dolog ("warning: Timer period is negative - %d "
1867 "treating as zero\n",
1870 conf.period.ticks = 1;
1873 muldiv64 (1, get_ticks_per_sec (), conf.period.hertz);
1876 e = qemu_add_vm_change_state_handler (audio_vm_change_state_handler, s);
1878 dolog ("warning: Could not register change state handler\n"
1879 "(Audio can continue looping even after stopping the VM)\n");
1882 QLIST_INIT (&s->card_head);
1883 vmstate_register (NULL, 0, &vmstate_audio, s);
1886 void AUD_register_card (const char *name, QEMUSoundCard *card)
1889 card->name = g_strdup (name);
1890 memset (&card->entries, 0, sizeof (card->entries));
1891 QLIST_INSERT_HEAD (&glob_audio_state.card_head, card, entries);
1894 void AUD_remove_card (QEMUSoundCard *card)
1896 QLIST_REMOVE (card, entries);
1897 g_free (card->name);
1901 CaptureVoiceOut *AUD_add_capture (
1902 struct audsettings *as,
1903 struct audio_capture_ops *ops,
1907 AudioState *s = &glob_audio_state;
1908 CaptureVoiceOut *cap;
1909 struct capture_callback *cb;
1911 if (audio_validate_settings (as)) {
1912 dolog ("Invalid settings were passed when trying to add capture\n");
1913 audio_print_settings (as);
1917 cb = audio_calloc (AUDIO_FUNC, 1, sizeof (*cb));
1919 dolog ("Could not allocate capture callback information, size %zu\n",
1924 cb->opaque = cb_opaque;
1926 cap = audio_pcm_capture_find_specific (as);
1928 QLIST_INSERT_HEAD (&cap->cb_head, cb, entries);
1933 CaptureVoiceOut *cap;
1935 cap = audio_calloc (AUDIO_FUNC, 1, sizeof (*cap));
1937 dolog ("Could not allocate capture voice, size %zu\n",
1943 QLIST_INIT (&hw->sw_head);
1944 QLIST_INIT (&cap->cb_head);
1946 /* XXX find a more elegant way */
1947 hw->samples = 4096 * 4;
1948 hw->mix_buf = audio_calloc (AUDIO_FUNC, hw->samples,
1949 sizeof (struct st_sample));
1951 dolog ("Could not allocate capture mix buffer (%d samples)\n",
1956 audio_pcm_init_info (&hw->info, as);
1958 cap->buf = audio_calloc (AUDIO_FUNC, hw->samples, 1 << hw->info.shift);
1960 dolog ("Could not allocate capture buffer "
1961 "(%d samples, each %d bytes)\n",
1962 hw->samples, 1 << hw->info.shift);
1966 hw->clip = mixeng_clip
1967 [hw->info.nchannels == 2]
1969 [hw->info.swap_endianness]
1970 [audio_bits_to_index (hw->info.bits)];
1972 QLIST_INSERT_HEAD (&s->cap_head, cap, entries);
1973 QLIST_INSERT_HEAD (&cap->cb_head, cb, entries);
1976 while ((hw = audio_pcm_hw_find_any_out (hw))) {
1977 audio_attach_capture (hw);
1982 g_free (cap->hw.mix_buf);
1992 void AUD_del_capture (CaptureVoiceOut *cap, void *cb_opaque)
1994 struct capture_callback *cb;
1996 for (cb = cap->cb_head.lh_first; cb; cb = cb->entries.le_next) {
1997 if (cb->opaque == cb_opaque) {
1998 cb->ops.destroy (cb_opaque);
1999 QLIST_REMOVE (cb, entries);
2002 if (!cap->cb_head.lh_first) {
2003 SWVoiceOut *sw = cap->hw.sw_head.lh_first, *sw1;
2006 SWVoiceCap *sc = (SWVoiceCap *) sw;
2007 #ifdef DEBUG_CAPTURE
2008 dolog ("freeing %s\n", sw->name);
2011 sw1 = sw->entries.le_next;
2013 st_rate_stop (sw->rate);
2016 QLIST_REMOVE (sw, entries);
2017 QLIST_REMOVE (sc, entries);
2021 QLIST_REMOVE (cap, entries);
2029 void AUD_set_volume_out (SWVoiceOut *sw, int mute, uint8_t lvol, uint8_t rvol)
2032 HWVoiceOut *hw = sw->hw;
2034 sw->vol.mute = mute;
2035 sw->vol.l = nominal_volume.l * lvol / 255;
2036 sw->vol.r = nominal_volume.r * rvol / 255;
2038 if (hw->pcm_ops->ctl_out) {
2039 hw->pcm_ops->ctl_out (hw, VOICE_VOLUME, sw);
2044 void AUD_set_volume_in (SWVoiceIn *sw, int mute, uint8_t lvol, uint8_t rvol)
2047 HWVoiceIn *hw = sw->hw;
2049 sw->vol.mute = mute;
2050 sw->vol.l = nominal_volume.l * lvol / 255;
2051 sw->vol.r = nominal_volume.r * rvol / 255;
2053 if (hw->pcm_ops->ctl_in) {
2054 hw->pcm_ops->ctl_in (hw, VOICE_VOLUME, sw);