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 .fixed_out = { /* DAC fixed settings */
71 .endianness = AUDIO_HOST_ENDIANNESS,
75 .fixed_in = { /* ADC fixed settings */
83 .endianness = AUDIO_HOST_ENDIANNESS,
87 .period = { .hertz = 250 },
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 (
710 struct audsettings *as
713 CaptureVoiceOut *cap;
714 AudioState *s = &glob_audio_state;
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 (HWVoiceOut *hw)
791 AudioState *s = &glob_audio_state;
792 CaptureVoiceOut *cap;
794 audio_detach_capture (hw);
795 for (cap = s->cap_head.lh_first; cap; cap = cap->entries.le_next) {
798 HWVoiceOut *hw_cap = &cap->hw;
800 sc = audio_calloc (AUDIO_FUNC, 1, sizeof (*sc));
802 dolog ("Could not allocate soft capture voice (%zu bytes)\n",
812 sw->active = hw->enabled;
813 sw->conv = noop_conv;
814 sw->ratio = ((int64_t) hw_cap->info.freq << 32) / sw->info.freq;
815 sw->rate = st_rate_start (sw->info.freq, hw_cap->info.freq);
817 dolog ("Could not start rate conversion for `%s'\n", SW_NAME (sw));
821 LIST_INSERT_HEAD (&hw_cap->sw_head, sw, entries);
822 LIST_INSERT_HEAD (&hw->cap_head, sc, entries);
824 asprintf (&sw->name, "for %p %d,%d,%d",
825 hw, sw->info.freq, sw->info.bits, sw->info.nchannels);
826 dolog ("Added %s active = %d\n", sw->name, sw->active);
829 audio_capture_maybe_changed (cap, 1);
836 * Hard voice (capture)
838 static int audio_pcm_hw_find_min_in (HWVoiceIn *hw)
841 int m = hw->total_samples_captured;
843 for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) {
845 m = audio_MIN (m, sw->total_hw_samples_acquired);
851 int audio_pcm_hw_get_live_in (HWVoiceIn *hw)
853 int live = hw->total_samples_captured - audio_pcm_hw_find_min_in (hw);
854 if (audio_bug (AUDIO_FUNC, live < 0 || live > hw->samples)) {
855 dolog ("live=%d hw->samples=%d\n", live, hw->samples);
862 * Soft voice (capture)
864 static int audio_pcm_sw_get_rpos_in (SWVoiceIn *sw)
866 HWVoiceIn *hw = sw->hw;
867 int live = hw->total_samples_captured - sw->total_hw_samples_acquired;
870 if (audio_bug (AUDIO_FUNC, live < 0 || live > hw->samples)) {
871 dolog ("live=%d hw->samples=%d\n", live, hw->samples);
875 rpos = hw->wpos - live;
880 return hw->samples + rpos;
884 int audio_pcm_sw_read (SWVoiceIn *sw, void *buf, int size)
886 HWVoiceIn *hw = sw->hw;
887 int samples, live, ret = 0, swlim, isamp, osamp, rpos, total = 0;
888 struct st_sample *src, *dst = sw->buf;
890 rpos = audio_pcm_sw_get_rpos_in (sw) % hw->samples;
892 live = hw->total_samples_captured - sw->total_hw_samples_acquired;
893 if (audio_bug (AUDIO_FUNC, live < 0 || live > hw->samples)) {
894 dolog ("live_in=%d hw->samples=%d\n", live, hw->samples);
898 samples = size >> sw->info.shift;
903 swlim = (live * sw->ratio) >> 32;
904 swlim = audio_MIN (swlim, samples);
907 src = hw->conv_buf + rpos;
908 isamp = hw->wpos - rpos;
911 isamp = hw->samples - rpos;
919 if (audio_bug (AUDIO_FUNC, osamp < 0)) {
920 dolog ("osamp=%d\n", osamp);
924 st_rate_flow (sw->rate, src, dst, &isamp, &osamp);
926 rpos = (rpos + isamp) % hw->samples;
932 sw->clip (buf, sw->buf, ret);
933 sw->total_hw_samples_acquired += total;
934 return ret << sw->info.shift;
938 * Hard voice (playback)
940 static int audio_pcm_hw_find_min_out (HWVoiceOut *hw, int *nb_livep)
946 for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) {
947 if (sw->active || !sw->empty) {
948 m = audio_MIN (m, sw->total_hw_samples_mixed);
957 int audio_pcm_hw_get_live_out2 (HWVoiceOut *hw, int *nb_live)
961 smin = audio_pcm_hw_find_min_out (hw, nb_live);
969 if (audio_bug (AUDIO_FUNC, live < 0 || live > hw->samples)) {
970 dolog ("live=%d hw->samples=%d\n", live, hw->samples);
977 int audio_pcm_hw_get_live_out (HWVoiceOut *hw)
982 live = audio_pcm_hw_get_live_out2 (hw, &nb_live);
983 if (audio_bug (AUDIO_FUNC, live < 0 || live > hw->samples)) {
984 dolog ("live=%d hw->samples=%d\n", live, hw->samples);
991 * Soft voice (playback)
993 int audio_pcm_sw_write (SWVoiceOut *sw, void *buf, int size)
995 int hwsamples, samples, isamp, osamp, wpos, live, dead, left, swlim, blck;
996 int ret = 0, pos = 0, total = 0;
1002 hwsamples = sw->hw->samples;
1004 live = sw->total_hw_samples_mixed;
1005 if (audio_bug (AUDIO_FUNC, live < 0 || live > hwsamples)){
1006 dolog ("live=%d hw->samples=%d\n", live, hwsamples);
1010 if (live == hwsamples) {
1012 dolog ("%s is full %d\n", sw->name, live);
1017 wpos = (sw->hw->rpos + live) % hwsamples;
1018 samples = size >> sw->info.shift;
1020 dead = hwsamples - live;
1021 swlim = ((int64_t) dead << 32) / sw->ratio;
1022 swlim = audio_MIN (swlim, samples);
1024 sw->conv (sw->buf, buf, swlim, &sw->vol);
1028 dead = hwsamples - live;
1029 left = hwsamples - wpos;
1030 blck = audio_MIN (dead, left);
1039 sw->hw->mix_buf + wpos,
1047 wpos = (wpos + osamp) % hwsamples;
1051 sw->total_hw_samples_mixed += total;
1052 sw->empty = sw->total_hw_samples_mixed == 0;
1056 "%s: write size %d ret %d total sw %d\n",
1058 size >> sw->info.shift,
1060 sw->total_hw_samples_mixed
1064 return ret << sw->info.shift;
1068 static void audio_pcm_print_info (const char *cap, struct audio_pcm_info *info)
1070 dolog ("%s: bits %d, sign %d, freq %d, nchan %d\n",
1071 cap, info->bits, info->sign, info->freq, info->nchannels);
1076 #include "audio_template.h"
1078 #include "audio_template.h"
1080 int AUD_write (SWVoiceOut *sw, void *buf, int size)
1085 /* XXX: Consider options */
1089 if (!sw->hw->enabled) {
1090 dolog ("Writing to disabled voice %s\n", SW_NAME (sw));
1094 bytes = sw->hw->pcm_ops->write (sw, buf, size);
1098 int AUD_read (SWVoiceIn *sw, void *buf, int size)
1103 /* XXX: Consider options */
1107 if (!sw->hw->enabled) {
1108 dolog ("Reading from disabled voice %s\n", SW_NAME (sw));
1112 bytes = sw->hw->pcm_ops->read (sw, buf, size);
1116 int AUD_get_buffer_size_out (SWVoiceOut *sw)
1118 return sw->hw->samples << sw->hw->info.shift;
1121 void AUD_set_active_out (SWVoiceOut *sw, int on)
1130 if (sw->active != on) {
1131 AudioState *s = &glob_audio_state;
1132 SWVoiceOut *temp_sw;
1136 hw->pending_disable = 0;
1139 if (s->vm_running) {
1140 hw->pcm_ops->ctl_out (hw, VOICE_ENABLE);
1148 for (temp_sw = hw->sw_head.lh_first; temp_sw;
1149 temp_sw = temp_sw->entries.le_next) {
1150 nb_active += temp_sw->active != 0;
1153 hw->pending_disable = nb_active == 1;
1157 for (sc = hw->cap_head.lh_first; sc; sc = sc->entries.le_next) {
1158 sc->sw.active = hw->enabled;
1160 audio_capture_maybe_changed (sc->cap, 1);
1167 void AUD_set_active_in (SWVoiceIn *sw, int on)
1176 if (sw->active != on) {
1177 AudioState *s = &glob_audio_state;
1183 if (s->vm_running) {
1184 hw->pcm_ops->ctl_in (hw, VOICE_ENABLE);
1187 sw->total_hw_samples_acquired = hw->total_samples_captured;
1193 for (temp_sw = hw->sw_head.lh_first; temp_sw;
1194 temp_sw = temp_sw->entries.le_next) {
1195 nb_active += temp_sw->active != 0;
1198 if (nb_active == 1) {
1200 hw->pcm_ops->ctl_in (hw, VOICE_DISABLE);
1208 static int audio_get_avail (SWVoiceIn *sw)
1216 live = sw->hw->total_samples_captured - sw->total_hw_samples_acquired;
1217 if (audio_bug (AUDIO_FUNC, live < 0 || live > sw->hw->samples)) {
1218 dolog ("live=%d sw->hw->samples=%d\n", live, sw->hw->samples);
1223 "%s: get_avail live %d ret %" PRId64 "\n",
1225 live, (((int64_t) live << 32) / sw->ratio) << sw->info.shift
1228 return (((int64_t) live << 32) / sw->ratio) << sw->info.shift;
1231 static int audio_get_free (SWVoiceOut *sw)
1239 live = sw->total_hw_samples_mixed;
1241 if (audio_bug (AUDIO_FUNC, live < 0 || live > sw->hw->samples)) {
1242 dolog ("live=%d sw->hw->samples=%d\n", live, sw->hw->samples);
1246 dead = sw->hw->samples - live;
1249 dolog ("%s: get_free live %d dead %d ret %" PRId64 "\n",
1251 live, dead, (((int64_t) dead << 32) / sw->ratio) << sw->info.shift);
1254 return (((int64_t) dead << 32) / sw->ratio) << sw->info.shift;
1257 static void audio_capture_mix_and_clear (HWVoiceOut *hw, int rpos, int samples)
1264 for (sc = hw->cap_head.lh_first; sc; sc = sc->entries.le_next) {
1265 SWVoiceOut *sw = &sc->sw;
1270 int till_end_of_hw = hw->samples - rpos2;
1271 int to_write = audio_MIN (till_end_of_hw, n);
1272 int bytes = to_write << hw->info.shift;
1275 sw->buf = hw->mix_buf + rpos2;
1276 written = audio_pcm_sw_write (sw, NULL, bytes);
1277 if (written - bytes) {
1278 dolog ("Could not mix %d bytes into a capture "
1279 "buffer, mixed %d\n",
1284 rpos2 = (rpos2 + to_write) % hw->samples;
1289 n = audio_MIN (samples, hw->samples - rpos);
1290 mixeng_clear (hw->mix_buf + rpos, n);
1291 mixeng_clear (hw->mix_buf, samples - n);
1294 static void audio_run_out (AudioState *s)
1296 HWVoiceOut *hw = NULL;
1299 while ((hw = audio_pcm_hw_find_any_enabled_out (hw))) {
1301 int live, free, nb_live, cleanup_required, prev_rpos;
1303 live = audio_pcm_hw_get_live_out2 (hw, &nb_live);
1308 if (audio_bug (AUDIO_FUNC, live < 0 || live > hw->samples)) {
1309 dolog ("live=%d hw->samples=%d\n", live, hw->samples);
1313 if (hw->pending_disable && !nb_live) {
1316 dolog ("Disabling voice\n");
1319 hw->pending_disable = 0;
1320 hw->pcm_ops->ctl_out (hw, VOICE_DISABLE);
1321 for (sc = hw->cap_head.lh_first; sc; sc = sc->entries.le_next) {
1323 audio_recalc_and_notify_capture (sc->cap);
1329 for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) {
1331 free = audio_get_free (sw);
1333 sw->callback.fn (sw->callback.opaque, free);
1340 prev_rpos = hw->rpos;
1341 played = hw->pcm_ops->run_out (hw);
1342 if (audio_bug (AUDIO_FUNC, hw->rpos >= hw->samples)) {
1343 dolog ("hw->rpos=%d hw->samples=%d played=%d\n",
1344 hw->rpos, hw->samples, played);
1349 dolog ("played=%d\n", played);
1353 hw->ts_helper += played;
1354 audio_capture_mix_and_clear (hw, prev_rpos, played);
1357 cleanup_required = 0;
1358 for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) {
1359 if (!sw->active && sw->empty) {
1363 if (audio_bug (AUDIO_FUNC, played > sw->total_hw_samples_mixed)) {
1364 dolog ("played=%d sw->total_hw_samples_mixed=%d\n",
1365 played, sw->total_hw_samples_mixed);
1366 played = sw->total_hw_samples_mixed;
1369 sw->total_hw_samples_mixed -= played;
1371 if (!sw->total_hw_samples_mixed) {
1373 cleanup_required |= !sw->active && !sw->callback.fn;
1377 free = audio_get_free (sw);
1379 sw->callback.fn (sw->callback.opaque, free);
1384 if (cleanup_required) {
1387 sw = hw->sw_head.lh_first;
1389 sw1 = sw->entries.le_next;
1390 if (!sw->active && !sw->callback.fn) {
1392 dolog ("Finishing with old voice\n");
1394 audio_close_out (sw);
1402 static void audio_run_in (AudioState *s)
1404 HWVoiceIn *hw = NULL;
1406 while ((hw = audio_pcm_hw_find_any_enabled_in (hw))) {
1410 captured = hw->pcm_ops->run_in (hw);
1412 min = audio_pcm_hw_find_min_in (hw);
1413 hw->total_samples_captured += captured - min;
1414 hw->ts_helper += captured;
1416 for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) {
1417 sw->total_hw_samples_acquired -= min;
1422 avail = audio_get_avail (sw);
1424 sw->callback.fn (sw->callback.opaque, avail);
1431 static void audio_run_capture (AudioState *s)
1433 CaptureVoiceOut *cap;
1435 for (cap = s->cap_head.lh_first; cap; cap = cap->entries.le_next) {
1436 int live, rpos, captured;
1437 HWVoiceOut *hw = &cap->hw;
1440 captured = live = audio_pcm_hw_get_live_out (hw);
1443 int left = hw->samples - rpos;
1444 int to_capture = audio_MIN (live, left);
1445 struct st_sample *src;
1446 struct capture_callback *cb;
1448 src = hw->mix_buf + rpos;
1449 hw->clip (cap->buf, src, to_capture);
1450 mixeng_clear (src, to_capture);
1452 for (cb = cap->cb_head.lh_first; cb; cb = cb->entries.le_next) {
1453 cb->ops.capture (cb->opaque, cap->buf,
1454 to_capture << hw->info.shift);
1456 rpos = (rpos + to_capture) % hw->samples;
1461 for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) {
1462 if (!sw->active && sw->empty) {
1466 if (audio_bug (AUDIO_FUNC, captured > sw->total_hw_samples_mixed)) {
1467 dolog ("captured=%d sw->total_hw_samples_mixed=%d\n",
1468 captured, sw->total_hw_samples_mixed);
1469 captured = sw->total_hw_samples_mixed;
1472 sw->total_hw_samples_mixed -= captured;
1473 sw->empty = sw->total_hw_samples_mixed == 0;
1478 static void audio_timer (void *opaque)
1480 AudioState *s = opaque;
1484 audio_run_capture (s);
1486 qemu_mod_timer (s->ts, qemu_get_clock (vm_clock) + conf.period.ticks);
1489 static struct audio_option audio_options[] = {
1491 {"DAC_FIXED_SETTINGS", AUD_OPT_BOOL, &conf.fixed_out.enabled,
1492 "Use fixed settings for host DAC", NULL, 0},
1494 {"DAC_FIXED_FREQ", AUD_OPT_INT, &conf.fixed_out.settings.freq,
1495 "Frequency for fixed host DAC", NULL, 0},
1497 {"DAC_FIXED_FMT", AUD_OPT_FMT, &conf.fixed_out.settings.fmt,
1498 "Format for fixed host DAC", NULL, 0},
1500 {"DAC_FIXED_CHANNELS", AUD_OPT_INT, &conf.fixed_out.settings.nchannels,
1501 "Number of channels for fixed DAC (1 - mono, 2 - stereo)", NULL, 0},
1503 {"DAC_VOICES", AUD_OPT_INT, &conf.fixed_out.nb_voices,
1504 "Number of voices for DAC", NULL, 0},
1507 {"ADC_FIXED_SETTINGS", AUD_OPT_BOOL, &conf.fixed_in.enabled,
1508 "Use fixed settings for host ADC", NULL, 0},
1510 {"ADC_FIXED_FREQ", AUD_OPT_INT, &conf.fixed_in.settings.freq,
1511 "Frequency for fixed host ADC", NULL, 0},
1513 {"ADC_FIXED_FMT", AUD_OPT_FMT, &conf.fixed_in.settings.fmt,
1514 "Format for fixed host ADC", NULL, 0},
1516 {"ADC_FIXED_CHANNELS", AUD_OPT_INT, &conf.fixed_in.settings.nchannels,
1517 "Number of channels for fixed ADC (1 - mono, 2 - stereo)", NULL, 0},
1519 {"ADC_VOICES", AUD_OPT_INT, &conf.fixed_in.nb_voices,
1520 "Number of voices for ADC", NULL, 0},
1523 {"TIMER_PERIOD", AUD_OPT_INT, &conf.period.hertz,
1524 "Timer period in HZ (0 - use lowest possible)", NULL, 0},
1526 {"PLIVE", AUD_OPT_BOOL, &conf.plive,
1527 "(undocumented)", NULL, 0},
1529 {"LOG_TO_MONITOR", AUD_OPT_BOOL, &conf.log_to_monitor,
1530 "print logging messages to monitor instead of stderr", NULL, 0},
1532 {NULL, 0, NULL, NULL, NULL, 0}
1535 static void audio_pp_nb_voices (const char *typ, int nb)
1539 printf ("Does not support %s\n", typ);
1542 printf ("One %s voice\n", typ);
1545 printf ("Theoretically supports many %s voices\n", typ);
1548 printf ("Theoretically supports upto %d %s voices\n", nb, typ);
1554 void AUD_help (void)
1558 audio_process_options ("AUDIO", audio_options);
1559 for (i = 0; i < ARRAY_SIZE (drvtab); i++) {
1560 struct audio_driver *d = drvtab[i];
1562 audio_process_options (d->name, d->options);
1566 printf ("Audio options:\n");
1567 audio_print_options ("AUDIO", audio_options);
1570 printf ("Available drivers:\n");
1572 for (i = 0; i < ARRAY_SIZE (drvtab); i++) {
1573 struct audio_driver *d = drvtab[i];
1575 printf ("Name: %s\n", d->name);
1576 printf ("Description: %s\n", d->descr);
1578 audio_pp_nb_voices ("playback", d->max_voices_out);
1579 audio_pp_nb_voices ("capture", d->max_voices_in);
1582 printf ("Options:\n");
1583 audio_print_options (d->name, d->options);
1586 printf ("No options\n");
1592 "Options are settable through environment variables.\n"
1595 " set QEMU_AUDIO_DRV=wav\n"
1596 " set QEMU_WAV_PATH=c:\\tune.wav\n"
1598 " export QEMU_AUDIO_DRV=wav\n"
1599 " export QEMU_WAV_PATH=$HOME/tune.wav\n"
1600 "(for csh replace export with setenv in the above)\n"
1606 static int audio_driver_init (AudioState *s, struct audio_driver *drv)
1609 audio_process_options (drv->name, drv->options);
1611 s->drv_opaque = drv->init ();
1613 if (s->drv_opaque) {
1614 audio_init_nb_voices_out (drv);
1615 audio_init_nb_voices_in (drv);
1620 dolog ("Could not init `%s' audio driver\n", drv->name);
1625 static void audio_vm_change_state_handler (void *opaque, int running,
1628 AudioState *s = opaque;
1629 HWVoiceOut *hwo = NULL;
1630 HWVoiceIn *hwi = NULL;
1631 int op = running ? VOICE_ENABLE : VOICE_DISABLE;
1633 s->vm_running = running;
1634 while ((hwo = audio_pcm_hw_find_any_enabled_out (hwo))) {
1635 hwo->pcm_ops->ctl_out (hwo, op);
1638 while ((hwi = audio_pcm_hw_find_any_enabled_in (hwi))) {
1639 hwi->pcm_ops->ctl_in (hwi, op);
1643 static void audio_atexit (void)
1645 AudioState *s = &glob_audio_state;
1646 HWVoiceOut *hwo = NULL;
1647 HWVoiceIn *hwi = NULL;
1649 while ((hwo = audio_pcm_hw_find_any_enabled_out (hwo))) {
1652 hwo->pcm_ops->ctl_out (hwo, VOICE_DISABLE);
1653 hwo->pcm_ops->fini_out (hwo);
1655 for (sc = hwo->cap_head.lh_first; sc; sc = sc->entries.le_next) {
1656 CaptureVoiceOut *cap = sc->cap;
1657 struct capture_callback *cb;
1659 for (cb = cap->cb_head.lh_first; cb; cb = cb->entries.le_next) {
1660 cb->ops.destroy (cb->opaque);
1665 while ((hwi = audio_pcm_hw_find_any_enabled_in (hwi))) {
1666 hwi->pcm_ops->ctl_in (hwi, VOICE_DISABLE);
1667 hwi->pcm_ops->fini_in (hwi);
1671 s->drv->fini (s->drv_opaque);
1675 static void audio_save (QEMUFile *f, void *opaque)
1681 static int audio_load (QEMUFile *f, void *opaque, int version_id)
1686 if (version_id != 1) {
1693 static void audio_init (void)
1697 const char *drvname;
1698 AudioState *s = &glob_audio_state;
1704 LIST_INIT (&s->hw_head_out);
1705 LIST_INIT (&s->hw_head_in);
1706 LIST_INIT (&s->cap_head);
1707 atexit (audio_atexit);
1709 s->ts = qemu_new_timer (vm_clock, audio_timer, s);
1711 hw_error("Could not create audio timer\n");
1714 audio_process_options ("AUDIO", audio_options);
1716 s->nb_hw_voices_out = conf.fixed_out.nb_voices;
1717 s->nb_hw_voices_in = conf.fixed_in.nb_voices;
1719 if (s->nb_hw_voices_out <= 0) {
1720 dolog ("Bogus number of playback voices %d, setting to 1\n",
1721 s->nb_hw_voices_out);
1722 s->nb_hw_voices_out = 1;
1725 if (s->nb_hw_voices_in <= 0) {
1726 dolog ("Bogus number of capture voices %d, setting to 0\n",
1727 s->nb_hw_voices_in);
1728 s->nb_hw_voices_in = 0;
1733 drvname = audio_get_conf_str ("QEMU_AUDIO_DRV", NULL, &def);
1739 for (i = 0; i < ARRAY_SIZE (drvtab); i++) {
1740 if (!strcmp (drvname, drvtab[i]->name)) {
1741 done = !audio_driver_init (s, drvtab[i]);
1748 dolog ("Unknown audio driver `%s'\n", drvname);
1749 dolog ("Run with -audio-help to list available drivers\n");
1754 for (i = 0; !done && i < ARRAY_SIZE (drvtab); i++) {
1755 if (drvtab[i]->can_be_default) {
1756 done = !audio_driver_init (s, drvtab[i]);
1762 done = !audio_driver_init (s, &no_audio_driver);
1764 hw_error("Could not initialize audio subsystem\n");
1767 dolog ("warning: Using timer based audio emulation\n");
1771 VMChangeStateEntry *e;
1773 if (conf.period.hertz <= 0) {
1774 if (conf.period.hertz < 0) {
1775 dolog ("warning: Timer period is negative - %d "
1776 "treating as zero\n",
1779 conf.period.ticks = 1;
1781 conf.period.ticks = ticks_per_sec / conf.period.hertz;
1784 e = qemu_add_vm_change_state_handler (audio_vm_change_state_handler, s);
1786 dolog ("warning: Could not register change state handler\n"
1787 "(Audio can continue looping even after stopping the VM)\n");
1790 LIST_INIT (&s->card_head);
1791 register_savevm ("audio", 0, 1, audio_save, audio_load, s);
1792 qemu_mod_timer (s->ts, qemu_get_clock (vm_clock) + conf.period.ticks);
1795 void AUD_register_card (const char *name, QEMUSoundCard *card)
1798 card->name = qemu_strdup (name);
1799 memset (&card->entries, 0, sizeof (card->entries));
1800 LIST_INSERT_HEAD (&glob_audio_state.card_head, card, entries);
1803 void AUD_remove_card (QEMUSoundCard *card)
1805 LIST_REMOVE (card, entries);
1806 qemu_free (card->name);
1810 CaptureVoiceOut *AUD_add_capture (
1811 struct audsettings *as,
1812 struct audio_capture_ops *ops,
1816 AudioState *s = &glob_audio_state;
1817 CaptureVoiceOut *cap;
1818 struct capture_callback *cb;
1820 if (audio_validate_settings (as)) {
1821 dolog ("Invalid settings were passed when trying to add capture\n");
1822 audio_print_settings (as);
1826 cb = audio_calloc (AUDIO_FUNC, 1, sizeof (*cb));
1828 dolog ("Could not allocate capture callback information, size %zu\n",
1833 cb->opaque = cb_opaque;
1835 cap = audio_pcm_capture_find_specific (as);
1837 LIST_INSERT_HEAD (&cap->cb_head, cb, entries);
1842 CaptureVoiceOut *cap;
1844 cap = audio_calloc (AUDIO_FUNC, 1, sizeof (*cap));
1846 dolog ("Could not allocate capture voice, size %zu\n",
1852 LIST_INIT (&hw->sw_head);
1853 LIST_INIT (&cap->cb_head);
1855 /* XXX find a more elegant way */
1856 hw->samples = 4096 * 4;
1857 hw->mix_buf = audio_calloc (AUDIO_FUNC, hw->samples,
1858 sizeof (struct st_sample));
1860 dolog ("Could not allocate capture mix buffer (%d samples)\n",
1865 audio_pcm_init_info (&hw->info, as);
1867 cap->buf = audio_calloc (AUDIO_FUNC, hw->samples, 1 << hw->info.shift);
1869 dolog ("Could not allocate capture buffer "
1870 "(%d samples, each %d bytes)\n",
1871 hw->samples, 1 << hw->info.shift);
1875 hw->clip = mixeng_clip
1876 [hw->info.nchannels == 2]
1878 [hw->info.swap_endianness]
1879 [audio_bits_to_index (hw->info.bits)];
1881 LIST_INSERT_HEAD (&s->cap_head, cap, entries);
1882 LIST_INSERT_HEAD (&cap->cb_head, cb, entries);
1885 while ((hw = audio_pcm_hw_find_any_out (hw))) {
1886 audio_attach_capture (hw);
1891 qemu_free (cap->hw.mix_buf);
1901 void AUD_del_capture (CaptureVoiceOut *cap, void *cb_opaque)
1903 struct capture_callback *cb;
1905 for (cb = cap->cb_head.lh_first; cb; cb = cb->entries.le_next) {
1906 if (cb->opaque == cb_opaque) {
1907 cb->ops.destroy (cb_opaque);
1908 LIST_REMOVE (cb, entries);
1911 if (!cap->cb_head.lh_first) {
1912 SWVoiceOut *sw = cap->hw.sw_head.lh_first, *sw1;
1915 SWVoiceCap *sc = (SWVoiceCap *) sw;
1916 #ifdef DEBUG_CAPTURE
1917 dolog ("freeing %s\n", sw->name);
1920 sw1 = sw->entries.le_next;
1922 st_rate_stop (sw->rate);
1925 LIST_REMOVE (sw, entries);
1926 LIST_REMOVE (sc, entries);
1930 LIST_REMOVE (cap, entries);
1938 void AUD_set_volume_out (SWVoiceOut *sw, int mute, uint8_t lvol, uint8_t rvol)
1941 sw->vol.mute = mute;
1942 sw->vol.l = nominal_volume.l * lvol / 255;
1943 sw->vol.r = nominal_volume.r * rvol / 255;
1947 void AUD_set_volume_in (SWVoiceIn *sw, int mute, uint8_t lvol, uint8_t rvol)
1950 sw->vol.mute = mute;
1951 sw->vol.l = nominal_volume.l * lvol / 255;
1952 sw->vol.r = nominal_volume.r * rvol / 255;