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[] = {
47 #ifdef CONFIG_COREAUDIO
48 &coreaudio_audio_driver,
66 struct fixed_settings {
70 audsettings_t settings;
74 struct fixed_settings fixed_out;
75 struct fixed_settings fixed_in;
83 { /* DAC fixed settings */
90 AUD_FMT_S16, /* fmt */
95 { /* ADC fixed settings */
102 AUD_FMT_S16, /* fmt */
103 AUDIO_HOST_ENDIANNESS
109 0 /* log_to_monitor */
112 static AudioState glob_audio_state;
114 volume_t nominal_volume = {
125 /* http://www.df.lth.se/~john_e/gems/gem002d.html */
126 /* http://www.multi-platforms.com/Tips/PopCount.htm */
127 uint32_t popcount (uint32_t u)
129 u = ((u&0x55555555) + ((u>>1)&0x55555555));
130 u = ((u&0x33333333) + ((u>>2)&0x33333333));
131 u = ((u&0x0f0f0f0f) + ((u>>4)&0x0f0f0f0f));
132 u = ((u&0x00ff00ff) + ((u>>8)&0x00ff00ff));
133 u = ( u&0x0000ffff) + (u>>16);
137 inline uint32_t lsbindex (uint32_t u)
139 return popcount ((u&-u)-1);
142 #ifdef AUDIO_IS_FLAWLESS_AND_NO_CHECKS_ARE_REQURIED
145 int audio_bug (const char *funcname, int cond)
150 AUD_log (NULL, "A bug was just triggered in %s\n", funcname);
153 AUD_log (NULL, "Save all your work and restart without audio\n");
155 AUD_log (NULL, "I am sorry\n");
157 AUD_log (NULL, "Context:\n");
159 #if defined AUDIO_BREAKPOINT_ON_BUG
160 # if defined HOST_I386
161 # if defined __GNUC__
163 # elif defined _MSC_VER
178 static inline int audio_bits_to_index (int bits)
191 audio_bug ("bits_to_index", 1);
192 AUD_log (NULL, "invalid bits %d\n", bits);
197 void *audio_calloc (const char *funcname, int nmemb, size_t size)
203 cond = !nmemb || !size;
207 if (audio_bug ("audio_calloc", cond)) {
208 AUD_log (NULL, "%s passed invalid arguments to audio_calloc\n",
210 AUD_log (NULL, "nmemb=%d size=%zu (len=%zu)\n", nmemb, size, len);
214 return qemu_mallocz (len);
217 static char *audio_alloc_prefix (const char *s)
219 const char qemu_prefix[] = "QEMU_";
228 r = qemu_malloc (len + sizeof (qemu_prefix));
232 char *u = r + sizeof (qemu_prefix) - 1;
234 strcpy (r, qemu_prefix);
237 for (i = 0; i < len; ++i) {
238 u[i] = toupper (u[i]);
244 static const char *audio_audfmt_to_string (audfmt_e fmt)
266 dolog ("Bogus audfmt %d returning S16\n", fmt);
270 static audfmt_e audio_string_to_audfmt (const char *s, audfmt_e defval,
273 if (!strcasecmp (s, "u8")) {
277 else if (!strcasecmp (s, "u16")) {
281 else if (!strcasecmp (s, "u32")) {
285 else if (!strcasecmp (s, "s8")) {
289 else if (!strcasecmp (s, "s16")) {
293 else if (!strcasecmp (s, "s32")) {
298 dolog ("Bogus audio format `%s' using %s\n",
299 s, audio_audfmt_to_string (defval));
305 static audfmt_e audio_get_conf_fmt (const char *envname,
309 const char *var = getenv (envname);
314 return audio_string_to_audfmt (var, defval, defaultp);
317 static int audio_get_conf_int (const char *key, int defval, int *defaultp)
322 strval = getenv (key);
334 static const char *audio_get_conf_str (const char *key,
338 const char *val = getenv (key);
349 void AUD_vlog (const char *cap, const char *fmt, va_list ap)
351 if (conf.log_to_monitor) {
353 term_printf ("%s: ", cap);
356 term_vprintf (fmt, ap);
360 fprintf (stderr, "%s: ", cap);
363 vfprintf (stderr, fmt, ap);
367 void AUD_log (const char *cap, const char *fmt, ...)
372 AUD_vlog (cap, fmt, ap);
376 static void audio_print_options (const char *prefix,
377 struct audio_option *opt)
382 dolog ("No prefix specified\n");
387 dolog ("No options\n");
391 uprefix = audio_alloc_prefix (prefix);
393 for (; opt->name; opt++) {
394 const char *state = "default";
395 printf (" %s_%s: ", uprefix, opt->name);
397 if (opt->overriddenp && *opt->overriddenp) {
404 int *intp = opt->valp;
405 printf ("boolean, %s = %d\n", state, *intp ? 1 : 0);
411 int *intp = opt->valp;
412 printf ("integer, %s = %d\n", state, *intp);
418 audfmt_e *fmtp = opt->valp;
420 "format, %s = %s, (one of: U8 S8 U16 S16 U32 S32)\n",
422 audio_audfmt_to_string (*fmtp)
429 const char **strp = opt->valp;
430 printf ("string, %s = %s\n",
432 *strp ? *strp : "(not set)");
438 dolog ("Bad value tag for option %s_%s %d\n",
439 uprefix, opt->name, opt->tag);
442 printf (" %s\n", opt->descr);
448 static void audio_process_options (const char *prefix,
449 struct audio_option *opt)
452 const char qemu_prefix[] = "QEMU_";
455 if (audio_bug (AUDIO_FUNC, !prefix)) {
456 dolog ("prefix = NULL\n");
460 if (audio_bug (AUDIO_FUNC, !opt)) {
461 dolog ("opt = NULL\n");
465 preflen = strlen (prefix);
467 for (; opt->name; opt++) {
472 dolog ("Option value pointer for `%s' is not set\n",
477 len = strlen (opt->name);
478 /* len of opt->name + len of prefix + size of qemu_prefix
479 * (includes trailing zero) + zero + underscore (on behalf of
481 optname = qemu_malloc (len + preflen + sizeof (qemu_prefix) + 1);
483 dolog ("Could not allocate memory for option name `%s'\n",
488 strcpy (optname, qemu_prefix);
490 /* copy while upper-casing, including trailing zero */
491 for (i = 0; i <= preflen; ++i) {
492 optname[i + sizeof (qemu_prefix) - 1] = toupper (prefix[i]);
494 strcat (optname, "_");
495 strcat (optname, opt->name);
502 int *intp = opt->valp;
503 *intp = audio_get_conf_int (optname, *intp, &def);
509 audfmt_e *fmtp = opt->valp;
510 *fmtp = audio_get_conf_fmt (optname, *fmtp, &def);
516 const char **strp = opt->valp;
517 *strp = audio_get_conf_str (optname, *strp, &def);
522 dolog ("Bad value tag for option `%s' - %d\n",
527 if (!opt->overriddenp) {
528 opt->overriddenp = &opt->overridden;
530 *opt->overriddenp = !def;
535 static void audio_print_settings (audsettings_t *as)
537 dolog ("frequency=%d nchannels=%d fmt=", as->freq, as->nchannels);
541 AUD_log (NULL, "S8");
544 AUD_log (NULL, "U8");
547 AUD_log (NULL, "S16");
550 AUD_log (NULL, "U16");
553 AUD_log (NULL, "invalid(%d)", as->fmt);
557 AUD_log (NULL, " endianness=");
558 switch (as->endianness) {
560 AUD_log (NULL, "little");
563 AUD_log (NULL, "big");
566 AUD_log (NULL, "invalid");
569 AUD_log (NULL, "\n");
572 static int audio_validate_settings (audsettings_t *as)
576 invalid = as->nchannels != 1 && as->nchannels != 2;
577 invalid |= as->endianness != 0 && as->endianness != 1;
592 invalid |= as->freq <= 0;
593 return invalid ? -1 : 0;
596 static int audio_pcm_info_eq (struct audio_pcm_info *info, audsettings_t *as)
598 int bits = 8, sign = 0;
618 return info->freq == as->freq
619 && info->nchannels == as->nchannels
620 && info->sign == sign
621 && info->bits == bits
622 && info->swap_endianness == (as->endianness != AUDIO_HOST_ENDIANNESS);
625 void audio_pcm_init_info (struct audio_pcm_info *info, audsettings_t *as)
627 int bits = 8, sign = 0, shift = 0;
650 info->freq = as->freq;
653 info->nchannels = as->nchannels;
654 info->shift = (as->nchannels == 2) + shift;
655 info->align = (1 << info->shift) - 1;
656 info->bytes_per_second = info->freq << info->shift;
657 info->swap_endianness = (as->endianness != AUDIO_HOST_ENDIANNESS);
660 void audio_pcm_info_clear_buf (struct audio_pcm_info *info, void *buf, int len)
667 memset (buf, 0x00, len << info->shift);
670 switch (info->bits) {
672 memset (buf, 0x80, len << info->shift);
679 int shift = info->nchannels - 1;
682 if (info->swap_endianness) {
686 for (i = 0; i < len << shift; i++) {
696 int shift = info->nchannels - 1;
697 int32_t s = INT32_MAX;
699 if (info->swap_endianness) {
703 for (i = 0; i < len << shift; i++) {
710 AUD_log (NULL, "audio_pcm_info_clear_buf: invalid bits %d\n",
720 static void noop_conv (st_sample_t *dst, const void *src,
721 int samples, volume_t *vol)
729 static CaptureVoiceOut *audio_pcm_capture_find_specific (
734 CaptureVoiceOut *cap;
736 for (cap = s->cap_head.lh_first; cap; cap = cap->entries.le_next) {
737 if (audio_pcm_info_eq (&cap->hw.info, as)) {
744 static void audio_notify_capture (CaptureVoiceOut *cap, audcnotification_e cmd)
746 struct capture_callback *cb;
749 dolog ("notification %d sent\n", cmd);
751 for (cb = cap->cb_head.lh_first; cb; cb = cb->entries.le_next) {
752 cb->ops.notify (cb->opaque, cmd);
756 static void audio_capture_maybe_changed (CaptureVoiceOut *cap, int enabled)
758 if (cap->hw.enabled != enabled) {
759 audcnotification_e cmd;
760 cap->hw.enabled = enabled;
761 cmd = enabled ? AUD_CNOTIFY_ENABLE : AUD_CNOTIFY_DISABLE;
762 audio_notify_capture (cap, cmd);
766 static void audio_recalc_and_notify_capture (CaptureVoiceOut *cap)
768 HWVoiceOut *hw = &cap->hw;
772 for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) {
778 audio_capture_maybe_changed (cap, enabled);
781 static void audio_detach_capture (HWVoiceOut *hw)
783 SWVoiceCap *sc = hw->cap_head.lh_first;
786 SWVoiceCap *sc1 = sc->entries.le_next;
787 SWVoiceOut *sw = &sc->sw;
788 CaptureVoiceOut *cap = sc->cap;
789 int was_active = sw->active;
792 st_rate_stop (sw->rate);
796 LIST_REMOVE (sw, entries);
797 LIST_REMOVE (sc, entries);
800 /* We have removed soft voice from the capture:
801 this might have changed the overall status of the capture
802 since this might have been the only active voice */
803 audio_recalc_and_notify_capture (cap);
809 static int audio_attach_capture (AudioState *s, HWVoiceOut *hw)
811 CaptureVoiceOut *cap;
813 audio_detach_capture (hw);
814 for (cap = s->cap_head.lh_first; cap; cap = cap->entries.le_next) {
817 HWVoiceOut *hw_cap = &cap->hw;
819 sc = audio_calloc (AUDIO_FUNC, 1, sizeof (*sc));
821 dolog ("Could not allocate soft capture voice (%zu bytes)\n",
831 sw->active = hw->enabled;
832 sw->conv = noop_conv;
833 sw->ratio = ((int64_t) hw_cap->info.freq << 32) / sw->info.freq;
834 sw->rate = st_rate_start (sw->info.freq, hw_cap->info.freq);
836 dolog ("Could not start rate conversion for `%s'\n", SW_NAME (sw));
840 LIST_INSERT_HEAD (&hw_cap->sw_head, sw, entries);
841 LIST_INSERT_HEAD (&hw->cap_head, sc, entries);
843 asprintf (&sw->name, "for %p %d,%d,%d",
844 hw, sw->info.freq, sw->info.bits, sw->info.nchannels);
845 dolog ("Added %s active = %d\n", sw->name, sw->active);
848 audio_capture_maybe_changed (cap, 1);
855 * Hard voice (capture)
857 static int audio_pcm_hw_find_min_in (HWVoiceIn *hw)
860 int m = hw->total_samples_captured;
862 for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) {
864 m = audio_MIN (m, sw->total_hw_samples_acquired);
870 int audio_pcm_hw_get_live_in (HWVoiceIn *hw)
872 int live = hw->total_samples_captured - audio_pcm_hw_find_min_in (hw);
873 if (audio_bug (AUDIO_FUNC, live < 0 || live > hw->samples)) {
874 dolog ("live=%d hw->samples=%d\n", live, hw->samples);
881 * Soft voice (capture)
883 static int audio_pcm_sw_get_rpos_in (SWVoiceIn *sw)
885 HWVoiceIn *hw = sw->hw;
886 int live = hw->total_samples_captured - sw->total_hw_samples_acquired;
889 if (audio_bug (AUDIO_FUNC, live < 0 || live > hw->samples)) {
890 dolog ("live=%d hw->samples=%d\n", live, hw->samples);
894 rpos = hw->wpos - live;
899 return hw->samples + rpos;
903 int audio_pcm_sw_read (SWVoiceIn *sw, void *buf, int size)
905 HWVoiceIn *hw = sw->hw;
906 int samples, live, ret = 0, swlim, isamp, osamp, rpos, total = 0;
907 st_sample_t *src, *dst = sw->buf;
909 rpos = audio_pcm_sw_get_rpos_in (sw) % hw->samples;
911 live = hw->total_samples_captured - sw->total_hw_samples_acquired;
912 if (audio_bug (AUDIO_FUNC, live < 0 || live > hw->samples)) {
913 dolog ("live_in=%d hw->samples=%d\n", live, hw->samples);
917 samples = size >> sw->info.shift;
922 swlim = (live * sw->ratio) >> 32;
923 swlim = audio_MIN (swlim, samples);
926 src = hw->conv_buf + rpos;
927 isamp = hw->wpos - rpos;
930 isamp = hw->samples - rpos;
938 if (audio_bug (AUDIO_FUNC, osamp < 0)) {
939 dolog ("osamp=%d\n", osamp);
943 st_rate_flow (sw->rate, src, dst, &isamp, &osamp);
945 rpos = (rpos + isamp) % hw->samples;
951 sw->clip (buf, sw->buf, ret);
952 sw->total_hw_samples_acquired += total;
953 return ret << sw->info.shift;
957 * Hard voice (playback)
959 static int audio_pcm_hw_find_min_out (HWVoiceOut *hw, int *nb_livep)
965 for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) {
966 if (sw->active || !sw->empty) {
967 m = audio_MIN (m, sw->total_hw_samples_mixed);
976 int audio_pcm_hw_get_live_out2 (HWVoiceOut *hw, int *nb_live)
980 smin = audio_pcm_hw_find_min_out (hw, nb_live);
988 if (audio_bug (AUDIO_FUNC, live < 0 || live > hw->samples)) {
989 dolog ("live=%d hw->samples=%d\n", live, hw->samples);
996 int audio_pcm_hw_get_live_out (HWVoiceOut *hw)
1001 live = audio_pcm_hw_get_live_out2 (hw, &nb_live);
1002 if (audio_bug (AUDIO_FUNC, live < 0 || live > hw->samples)) {
1003 dolog ("live=%d hw->samples=%d\n", live, hw->samples);
1010 * Soft voice (playback)
1012 int audio_pcm_sw_write (SWVoiceOut *sw, void *buf, int size)
1014 int hwsamples, samples, isamp, osamp, wpos, live, dead, left, swlim, blck;
1015 int ret = 0, pos = 0, total = 0;
1021 hwsamples = sw->hw->samples;
1023 live = sw->total_hw_samples_mixed;
1024 if (audio_bug (AUDIO_FUNC, live < 0 || live > hwsamples)){
1025 dolog ("live=%d hw->samples=%d\n", live, hwsamples);
1029 if (live == hwsamples) {
1031 dolog ("%s is full %d\n", sw->name, live);
1036 wpos = (sw->hw->rpos + live) % hwsamples;
1037 samples = size >> sw->info.shift;
1039 dead = hwsamples - live;
1040 swlim = ((int64_t) dead << 32) / sw->ratio;
1041 swlim = audio_MIN (swlim, samples);
1043 sw->conv (sw->buf, buf, swlim, &sw->vol);
1047 dead = hwsamples - live;
1048 left = hwsamples - wpos;
1049 blck = audio_MIN (dead, left);
1058 sw->hw->mix_buf + wpos,
1066 wpos = (wpos + osamp) % hwsamples;
1070 sw->total_hw_samples_mixed += total;
1071 sw->empty = sw->total_hw_samples_mixed == 0;
1075 "%s: write size %d ret %d total sw %d\n",
1077 size >> sw->info.shift,
1079 sw->total_hw_samples_mixed
1083 return ret << sw->info.shift;
1087 static void audio_pcm_print_info (const char *cap, struct audio_pcm_info *info)
1089 dolog ("%s: bits %d, sign %d, freq %d, nchan %d\n",
1090 cap, info->bits, info->sign, info->freq, info->nchannels);
1095 #include "audio_template.h"
1097 #include "audio_template.h"
1099 int AUD_write (SWVoiceOut *sw, void *buf, int size)
1104 /* XXX: Consider options */
1108 if (!sw->hw->enabled) {
1109 dolog ("Writing to disabled voice %s\n", SW_NAME (sw));
1113 bytes = sw->hw->pcm_ops->write (sw, buf, size);
1117 int AUD_read (SWVoiceIn *sw, void *buf, int size)
1122 /* XXX: Consider options */
1126 if (!sw->hw->enabled) {
1127 dolog ("Reading from disabled voice %s\n", SW_NAME (sw));
1131 bytes = sw->hw->pcm_ops->read (sw, buf, size);
1135 int AUD_get_buffer_size_out (SWVoiceOut *sw)
1137 return sw->hw->samples << sw->hw->info.shift;
1140 void AUD_set_active_out (SWVoiceOut *sw, int on)
1149 if (sw->active != on) {
1150 SWVoiceOut *temp_sw;
1154 hw->pending_disable = 0;
1157 hw->pcm_ops->ctl_out (hw, VOICE_ENABLE);
1164 for (temp_sw = hw->sw_head.lh_first; temp_sw;
1165 temp_sw = temp_sw->entries.le_next) {
1166 nb_active += temp_sw->active != 0;
1169 hw->pending_disable = nb_active == 1;
1173 for (sc = hw->cap_head.lh_first; sc; sc = sc->entries.le_next) {
1174 sc->sw.active = hw->enabled;
1176 audio_capture_maybe_changed (sc->cap, 1);
1183 void AUD_set_active_in (SWVoiceIn *sw, int on)
1192 if (sw->active != on) {
1198 hw->pcm_ops->ctl_in (hw, VOICE_ENABLE);
1200 sw->total_hw_samples_acquired = hw->total_samples_captured;
1206 for (temp_sw = hw->sw_head.lh_first; temp_sw;
1207 temp_sw = temp_sw->entries.le_next) {
1208 nb_active += temp_sw->active != 0;
1211 if (nb_active == 1) {
1213 hw->pcm_ops->ctl_in (hw, VOICE_DISABLE);
1221 static int audio_get_avail (SWVoiceIn *sw)
1229 live = sw->hw->total_samples_captured - sw->total_hw_samples_acquired;
1230 if (audio_bug (AUDIO_FUNC, live < 0 || live > sw->hw->samples)) {
1231 dolog ("live=%d sw->hw->samples=%d\n", live, sw->hw->samples);
1236 "%s: get_avail live %d ret %" PRId64 "\n",
1238 live, (((int64_t) live << 32) / sw->ratio) << sw->info.shift
1241 return (((int64_t) live << 32) / sw->ratio) << sw->info.shift;
1244 static int audio_get_free (SWVoiceOut *sw)
1252 live = sw->total_hw_samples_mixed;
1254 if (audio_bug (AUDIO_FUNC, live < 0 || live > sw->hw->samples)) {
1255 dolog ("live=%d sw->hw->samples=%d\n", live, sw->hw->samples);
1259 dead = sw->hw->samples - live;
1262 dolog ("%s: get_free live %d dead %d ret %" PRId64 "\n",
1264 live, dead, (((int64_t) dead << 32) / sw->ratio) << sw->info.shift);
1267 return (((int64_t) dead << 32) / sw->ratio) << sw->info.shift;
1270 static void audio_capture_mix_and_clear (HWVoiceOut *hw, int rpos, int samples)
1277 for (sc = hw->cap_head.lh_first; sc; sc = sc->entries.le_next) {
1278 SWVoiceOut *sw = &sc->sw;
1283 int till_end_of_hw = hw->samples - rpos2;
1284 int to_write = audio_MIN (till_end_of_hw, n);
1285 int bytes = to_write << hw->info.shift;
1288 sw->buf = hw->mix_buf + rpos2;
1289 written = audio_pcm_sw_write (sw, NULL, bytes);
1290 if (written - bytes) {
1291 dolog ("Could not mix %d bytes into a capture "
1292 "buffer, mixed %d\n",
1297 rpos2 = (rpos2 + to_write) % hw->samples;
1302 n = audio_MIN (samples, hw->samples - rpos);
1303 mixeng_clear (hw->mix_buf + rpos, n);
1304 mixeng_clear (hw->mix_buf, samples - n);
1307 static void audio_run_out (AudioState *s)
1309 HWVoiceOut *hw = NULL;
1312 while ((hw = audio_pcm_hw_find_any_enabled_out (s, hw))) {
1314 int live, free, nb_live, cleanup_required, prev_rpos;
1316 live = audio_pcm_hw_get_live_out2 (hw, &nb_live);
1321 if (audio_bug (AUDIO_FUNC, live < 0 || live > hw->samples)) {
1322 dolog ("live=%d hw->samples=%d\n", live, hw->samples);
1326 if (hw->pending_disable && !nb_live) {
1329 dolog ("Disabling voice\n");
1332 hw->pending_disable = 0;
1333 hw->pcm_ops->ctl_out (hw, VOICE_DISABLE);
1334 for (sc = hw->cap_head.lh_first; sc; sc = sc->entries.le_next) {
1336 audio_recalc_and_notify_capture (sc->cap);
1342 for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) {
1344 free = audio_get_free (sw);
1346 sw->callback.fn (sw->callback.opaque, free);
1353 prev_rpos = hw->rpos;
1354 played = hw->pcm_ops->run_out (hw);
1355 if (audio_bug (AUDIO_FUNC, hw->rpos >= hw->samples)) {
1356 dolog ("hw->rpos=%d hw->samples=%d played=%d\n",
1357 hw->rpos, hw->samples, played);
1362 dolog ("played=%d\n", played);
1366 hw->ts_helper += played;
1367 audio_capture_mix_and_clear (hw, prev_rpos, played);
1370 cleanup_required = 0;
1371 for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) {
1372 if (!sw->active && sw->empty) {
1376 if (audio_bug (AUDIO_FUNC, played > sw->total_hw_samples_mixed)) {
1377 dolog ("played=%d sw->total_hw_samples_mixed=%d\n",
1378 played, sw->total_hw_samples_mixed);
1379 played = sw->total_hw_samples_mixed;
1382 sw->total_hw_samples_mixed -= played;
1384 if (!sw->total_hw_samples_mixed) {
1386 cleanup_required |= !sw->active && !sw->callback.fn;
1390 free = audio_get_free (sw);
1392 sw->callback.fn (sw->callback.opaque, free);
1397 if (cleanup_required) {
1400 sw = hw->sw_head.lh_first;
1402 sw1 = sw->entries.le_next;
1403 if (!sw->active && !sw->callback.fn) {
1405 dolog ("Finishing with old voice\n");
1407 audio_close_out (s, sw);
1415 static void audio_run_in (AudioState *s)
1417 HWVoiceIn *hw = NULL;
1419 while ((hw = audio_pcm_hw_find_any_enabled_in (s, hw))) {
1423 captured = hw->pcm_ops->run_in (hw);
1425 min = audio_pcm_hw_find_min_in (hw);
1426 hw->total_samples_captured += captured - min;
1427 hw->ts_helper += captured;
1429 for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) {
1430 sw->total_hw_samples_acquired -= min;
1435 avail = audio_get_avail (sw);
1437 sw->callback.fn (sw->callback.opaque, avail);
1444 static void audio_run_capture (AudioState *s)
1446 CaptureVoiceOut *cap;
1448 for (cap = s->cap_head.lh_first; cap; cap = cap->entries.le_next) {
1449 int live, rpos, captured;
1450 HWVoiceOut *hw = &cap->hw;
1453 captured = live = audio_pcm_hw_get_live_out (hw);
1456 int left = hw->samples - rpos;
1457 int to_capture = audio_MIN (live, left);
1459 struct capture_callback *cb;
1461 src = hw->mix_buf + rpos;
1462 hw->clip (cap->buf, src, to_capture);
1463 mixeng_clear (src, to_capture);
1465 for (cb = cap->cb_head.lh_first; cb; cb = cb->entries.le_next) {
1466 cb->ops.capture (cb->opaque, cap->buf,
1467 to_capture << hw->info.shift);
1469 rpos = (rpos + to_capture) % hw->samples;
1474 for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) {
1475 if (!sw->active && sw->empty) {
1479 if (audio_bug (AUDIO_FUNC, captured > sw->total_hw_samples_mixed)) {
1480 dolog ("captured=%d sw->total_hw_samples_mixed=%d\n",
1481 captured, sw->total_hw_samples_mixed);
1482 captured = sw->total_hw_samples_mixed;
1485 sw->total_hw_samples_mixed -= captured;
1486 sw->empty = sw->total_hw_samples_mixed == 0;
1491 static void audio_timer (void *opaque)
1493 AudioState *s = opaque;
1497 audio_run_capture (s);
1499 qemu_mod_timer (s->ts, qemu_get_clock (vm_clock) + conf.period.ticks);
1502 static struct audio_option audio_options[] = {
1504 {"DAC_FIXED_SETTINGS", AUD_OPT_BOOL, &conf.fixed_out.enabled,
1505 "Use fixed settings for host DAC", NULL, 0},
1507 {"DAC_FIXED_FREQ", AUD_OPT_INT, &conf.fixed_out.settings.freq,
1508 "Frequency for fixed host DAC", NULL, 0},
1510 {"DAC_FIXED_FMT", AUD_OPT_FMT, &conf.fixed_out.settings.fmt,
1511 "Format for fixed host DAC", NULL, 0},
1513 {"DAC_FIXED_CHANNELS", AUD_OPT_INT, &conf.fixed_out.settings.nchannels,
1514 "Number of channels for fixed DAC (1 - mono, 2 - stereo)", NULL, 0},
1516 {"DAC_VOICES", AUD_OPT_INT, &conf.fixed_out.nb_voices,
1517 "Number of voices for DAC", NULL, 0},
1520 {"ADC_FIXED_SETTINGS", AUD_OPT_BOOL, &conf.fixed_in.enabled,
1521 "Use fixed settings for host ADC", NULL, 0},
1523 {"ADC_FIXED_FREQ", AUD_OPT_INT, &conf.fixed_in.settings.freq,
1524 "Frequency for fixed host ADC", NULL, 0},
1526 {"ADC_FIXED_FMT", AUD_OPT_FMT, &conf.fixed_in.settings.fmt,
1527 "Format for fixed host ADC", NULL, 0},
1529 {"ADC_FIXED_CHANNELS", AUD_OPT_INT, &conf.fixed_in.settings.nchannels,
1530 "Number of channels for fixed ADC (1 - mono, 2 - stereo)", NULL, 0},
1532 {"ADC_VOICES", AUD_OPT_INT, &conf.fixed_in.nb_voices,
1533 "Number of voices for ADC", NULL, 0},
1536 {"TIMER_PERIOD", AUD_OPT_INT, &conf.period.hz,
1537 "Timer period in HZ (0 - use lowest possible)", NULL, 0},
1539 {"PLIVE", AUD_OPT_BOOL, &conf.plive,
1540 "(undocumented)", NULL, 0},
1542 {"LOG_TO_MONITOR", AUD_OPT_BOOL, &conf.log_to_monitor,
1543 "print logging messages to montior instead of stderr", NULL, 0},
1545 {NULL, 0, NULL, NULL, NULL, 0}
1548 static void audio_pp_nb_voices (const char *typ, int nb)
1552 printf ("Does not support %s\n", typ);
1555 printf ("One %s voice\n", typ);
1558 printf ("Theoretically supports many %s voices\n", typ);
1561 printf ("Theoretically supports upto %d %s voices\n", nb, typ);
1567 void AUD_help (void)
1571 audio_process_options ("AUDIO", audio_options);
1572 for (i = 0; i < sizeof (drvtab) / sizeof (drvtab[0]); i++) {
1573 struct audio_driver *d = drvtab[i];
1575 audio_process_options (d->name, d->options);
1579 printf ("Audio options:\n");
1580 audio_print_options ("AUDIO", audio_options);
1583 printf ("Available drivers:\n");
1585 for (i = 0; i < sizeof (drvtab) / sizeof (drvtab[0]); i++) {
1586 struct audio_driver *d = drvtab[i];
1588 printf ("Name: %s\n", d->name);
1589 printf ("Description: %s\n", d->descr);
1591 audio_pp_nb_voices ("playback", d->max_voices_out);
1592 audio_pp_nb_voices ("capture", d->max_voices_in);
1595 printf ("Options:\n");
1596 audio_print_options (d->name, d->options);
1599 printf ("No options\n");
1605 "Options are settable through environment variables.\n"
1608 " set QEMU_AUDIO_DRV=wav\n"
1609 " set QEMU_WAV_PATH=c:\\tune.wav\n"
1611 " export QEMU_AUDIO_DRV=wav\n"
1612 " export QEMU_WAV_PATH=$HOME/tune.wav\n"
1613 "(for csh replace export with setenv in the above)\n"
1619 static int audio_driver_init (AudioState *s, struct audio_driver *drv)
1622 audio_process_options (drv->name, drv->options);
1624 s->drv_opaque = drv->init ();
1626 if (s->drv_opaque) {
1627 audio_init_nb_voices_out (s, drv);
1628 audio_init_nb_voices_in (s, drv);
1633 dolog ("Could not init `%s' audio driver\n", drv->name);
1638 static void audio_vm_change_state_handler (void *opaque, int running)
1640 AudioState *s = opaque;
1641 HWVoiceOut *hwo = NULL;
1642 HWVoiceIn *hwi = NULL;
1643 int op = running ? VOICE_ENABLE : VOICE_DISABLE;
1645 while ((hwo = audio_pcm_hw_find_any_enabled_out (s, hwo))) {
1646 hwo->pcm_ops->ctl_out (hwo, op);
1649 while ((hwi = audio_pcm_hw_find_any_enabled_in (s, hwi))) {
1650 hwi->pcm_ops->ctl_in (hwi, op);
1654 static void audio_atexit (void)
1656 AudioState *s = &glob_audio_state;
1657 HWVoiceOut *hwo = NULL;
1658 HWVoiceIn *hwi = NULL;
1660 while ((hwo = audio_pcm_hw_find_any_enabled_out (s, hwo))) {
1663 hwo->pcm_ops->ctl_out (hwo, VOICE_DISABLE);
1664 hwo->pcm_ops->fini_out (hwo);
1666 for (sc = hwo->cap_head.lh_first; sc; sc = sc->entries.le_next) {
1667 CaptureVoiceOut *cap = sc->cap;
1668 struct capture_callback *cb;
1670 for (cb = cap->cb_head.lh_first; cb; cb = cb->entries.le_next) {
1671 cb->ops.destroy (cb->opaque);
1676 while ((hwi = audio_pcm_hw_find_any_enabled_in (s, hwi))) {
1677 hwi->pcm_ops->ctl_in (hwi, VOICE_DISABLE);
1678 hwi->pcm_ops->fini_in (hwi);
1682 s->drv->fini (s->drv_opaque);
1686 static void audio_save (QEMUFile *f, void *opaque)
1692 static int audio_load (QEMUFile *f, void *opaque, int version_id)
1697 if (version_id != 1) {
1704 void AUD_register_card (AudioState *s, const char *name, QEMUSoundCard *card)
1707 card->name = qemu_strdup (name);
1708 memset (&card->entries, 0, sizeof (card->entries));
1709 LIST_INSERT_HEAD (&s->card_head, card, entries);
1712 void AUD_remove_card (QEMUSoundCard *card)
1714 LIST_REMOVE (card, entries);
1716 qemu_free (card->name);
1719 AudioState *AUD_init (void)
1723 const char *drvname;
1724 AudioState *s = &glob_audio_state;
1726 LIST_INIT (&s->hw_head_out);
1727 LIST_INIT (&s->hw_head_in);
1728 LIST_INIT (&s->cap_head);
1729 atexit (audio_atexit);
1731 s->ts = qemu_new_timer (vm_clock, audio_timer, s);
1733 dolog ("Could not create audio timer\n");
1737 audio_process_options ("AUDIO", audio_options);
1739 s->nb_hw_voices_out = conf.fixed_out.nb_voices;
1740 s->nb_hw_voices_in = conf.fixed_in.nb_voices;
1742 if (s->nb_hw_voices_out <= 0) {
1743 dolog ("Bogus number of playback voices %d, setting to 1\n",
1744 s->nb_hw_voices_out);
1745 s->nb_hw_voices_out = 1;
1748 if (s->nb_hw_voices_in <= 0) {
1749 dolog ("Bogus number of capture voices %d, setting to 0\n",
1750 s->nb_hw_voices_in);
1751 s->nb_hw_voices_in = 0;
1756 drvname = audio_get_conf_str ("QEMU_AUDIO_DRV", NULL, &def);
1762 for (i = 0; i < sizeof (drvtab) / sizeof (drvtab[0]); i++) {
1763 if (!strcmp (drvname, drvtab[i]->name)) {
1764 done = !audio_driver_init (s, drvtab[i]);
1771 dolog ("Unknown audio driver `%s'\n", drvname);
1772 dolog ("Run with -audio-help to list available drivers\n");
1777 for (i = 0; !done && i < sizeof (drvtab) / sizeof (drvtab[0]); i++) {
1778 if (drvtab[i]->can_be_default) {
1779 done = !audio_driver_init (s, drvtab[i]);
1785 done = !audio_driver_init (s, &no_audio_driver);
1787 dolog ("Could not initialize audio subsystem\n");
1790 dolog ("warning: Using timer based audio emulation\n");
1795 VMChangeStateEntry *e;
1797 if (conf.period.hz <= 0) {
1798 if (conf.period.hz < 0) {
1799 dolog ("warning: Timer period is negative - %d "
1800 "treating as zero\n",
1803 conf.period.ticks = 1;
1806 conf.period.ticks = ticks_per_sec / conf.period.hz;
1809 e = qemu_add_vm_change_state_handler (audio_vm_change_state_handler, s);
1811 dolog ("warning: Could not register change state handler\n"
1812 "(Audio can continue looping even after stopping the VM)\n");
1816 qemu_del_timer (s->ts);
1820 LIST_INIT (&s->card_head);
1821 register_savevm ("audio", 0, 1, audio_save, audio_load, s);
1822 qemu_mod_timer (s->ts, qemu_get_clock (vm_clock) + conf.period.ticks);
1826 CaptureVoiceOut *AUD_add_capture (
1829 struct audio_capture_ops *ops,
1833 CaptureVoiceOut *cap;
1834 struct capture_callback *cb;
1838 s = &glob_audio_state;
1841 if (audio_validate_settings (as)) {
1842 dolog ("Invalid settings were passed when trying to add capture\n");
1843 audio_print_settings (as);
1847 cb = audio_calloc (AUDIO_FUNC, 1, sizeof (*cb));
1849 dolog ("Could not allocate capture callback information, size %zu\n",
1854 cb->opaque = cb_opaque;
1856 cap = audio_pcm_capture_find_specific (s, as);
1858 LIST_INSERT_HEAD (&cap->cb_head, cb, entries);
1863 CaptureVoiceOut *cap;
1865 cap = audio_calloc (AUDIO_FUNC, 1, sizeof (*cap));
1867 dolog ("Could not allocate capture voice, size %zu\n",
1873 LIST_INIT (&hw->sw_head);
1874 LIST_INIT (&cap->cb_head);
1876 /* XXX find a more elegant way */
1877 hw->samples = 4096 * 4;
1878 hw->mix_buf = audio_calloc (AUDIO_FUNC, hw->samples,
1879 sizeof (st_sample_t));
1881 dolog ("Could not allocate capture mix buffer (%d samples)\n",
1886 audio_pcm_init_info (&hw->info, as);
1888 cap->buf = audio_calloc (AUDIO_FUNC, hw->samples, 1 << hw->info.shift);
1890 dolog ("Could not allocate capture buffer "
1891 "(%d samples, each %d bytes)\n",
1892 hw->samples, 1 << hw->info.shift);
1896 hw->clip = mixeng_clip
1897 [hw->info.nchannels == 2]
1899 [hw->info.swap_endianness]
1900 [audio_bits_to_index (hw->info.bits)];
1902 LIST_INSERT_HEAD (&s->cap_head, cap, entries);
1903 LIST_INSERT_HEAD (&cap->cb_head, cb, entries);
1906 while ((hw = audio_pcm_hw_find_any_out (s, hw))) {
1907 audio_attach_capture (s, hw);
1912 qemu_free (cap->hw.mix_buf);
1922 void AUD_del_capture (CaptureVoiceOut *cap, void *cb_opaque)
1924 struct capture_callback *cb;
1926 for (cb = cap->cb_head.lh_first; cb; cb = cb->entries.le_next) {
1927 if (cb->opaque == cb_opaque) {
1928 cb->ops.destroy (cb_opaque);
1929 LIST_REMOVE (cb, entries);
1932 if (!cap->cb_head.lh_first) {
1933 SWVoiceOut *sw = cap->hw.sw_head.lh_first, *sw1;
1936 SWVoiceCap *sc = (SWVoiceCap *) sw;
1937 #ifdef DEBUG_CAPTURE
1938 dolog ("freeing %s\n", sw->name);
1941 sw1 = sw->entries.le_next;
1943 st_rate_stop (sw->rate);
1946 LIST_REMOVE (sw, entries);
1947 LIST_REMOVE (sc, entries);
1951 LIST_REMOVE (cap, entries);