2 * QEMU ESD audio driver
4 * Copyright (c) 2006 Frederick Reeve (brushed up by 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
25 #include "qemu-common.h"
29 #define AUDIO_CAP "esd"
30 #include "audio_int.h"
31 #include "audio_pt_int.h"
67 static void GCC_FMT_ATTR (2, 3) qesd_logerr (int err, const char *fmt, ...)
72 AUD_vlog (AUDIO_CAP, fmt, ap);
75 AUD_log (AUDIO_CAP, "Reason: %s\n", strerror (err));
79 static void *qesd_thread_out (void *arg)
81 ESDVoiceOut *esd = arg;
82 HWVoiceOut *hw = &esd->hw;
85 threshold = conf.divisor ? hw->samples / conf.divisor : 0;
88 int decr, to_mix, rpos;
95 if (esd->live > threshold) {
99 if (audio_pt_wait (&esd->pt, AUDIO_FUNC)) {
104 decr = to_mix = esd->live;
107 if (audio_pt_unlock (&esd->pt, AUDIO_FUNC)) {
113 int chunk = audio_MIN (to_mix, hw->samples - rpos);
114 st_sample_t *src = hw->mix_buf + rpos;
116 hw->clip (esd->pcm_buf, src, chunk);
119 written = write (esd->fd, esd->pcm_buf, chunk << hw->info.shift);
121 if (errno == EINTR || errno == EAGAIN) {
124 qesd_logerr (errno, "write failed\n");
128 if (written != chunk << hw->info.shift) {
129 int wsamples = written >> hw->info.shift;
130 int wbytes = wsamples << hw->info.shift;
131 if (wbytes != written) {
132 dolog ("warning: Misaligned write %d (requested %d), "
134 wbytes, written, hw->info.align + 1);
137 rpos = (rpos + wsamples) % hw->samples;
141 rpos = (rpos + chunk) % hw->samples;
145 if (audio_pt_lock (&esd->pt, AUDIO_FUNC)) {
155 audio_pt_unlock (&esd->pt, AUDIO_FUNC);
159 static int qesd_run_out (HWVoiceOut *hw)
162 ESDVoiceOut *esd = (ESDVoiceOut *) hw;
164 if (audio_pt_lock (&esd->pt, AUDIO_FUNC)) {
168 live = audio_pcm_hw_get_live_out (hw);
169 decr = audio_MIN (live, esd->decr);
171 esd->live = live - decr;
172 hw->rpos = esd->rpos;
174 audio_pt_unlock_and_signal (&esd->pt, AUDIO_FUNC);
177 audio_pt_unlock (&esd->pt, AUDIO_FUNC);
182 static int qesd_write (SWVoiceOut *sw, void *buf, int len)
184 return audio_pcm_sw_write (sw, buf, len);
187 static int qesd_init_out (HWVoiceOut *hw, audsettings_t *as)
189 ESDVoiceOut *esd = (ESDVoiceOut *) hw;
190 audsettings_t obt_as = *as;
191 int esdfmt = ESD_STREAM | ESD_PLAY;
193 sigset_t set, old_set;
197 esdfmt |= (as->nchannels == 2) ? ESD_STEREO : ESD_MONO;
202 obt_as.fmt = AUD_FMT_U8;
207 dolog ("Will use 16 instead of 32 bit samples\n");
212 esdfmt |= ESD_BITS16;
213 obt_as.fmt = AUD_FMT_S16;
217 dolog ("Internal logic error: Bad audio format %d\n", as->fmt);
224 obt_as.endianness = 0;
226 audio_pcm_init_info (&hw->info, &obt_as);
228 hw->samples = conf.samples;
229 esd->pcm_buf = audio_calloc (AUDIO_FUNC, hw->samples, 1 << hw->info.shift);
231 dolog ("Could not allocate buffer (%d bytes)\n",
232 hw->samples << hw->info.shift);
237 err = pthread_sigmask (SIG_BLOCK, &set, &old_set);
239 qesd_logerr (err, "pthread_sigmask failed\n");
243 esd->fd = esd_play_stream (esdfmt, as->freq, conf.dac_host, NULL);
245 qesd_logerr (errno, "esd_play_stream failed\n");
249 if (audio_pt_init (&esd->pt, qesd_thread_out, esd, AUDIO_CAP, AUDIO_FUNC)) {
253 err = pthread_sigmask (SIG_SETMASK, &old_set, NULL);
255 qesd_logerr (err, "pthread_sigmask(restore) failed\n");
261 if (close (esd->fd)) {
262 qesd_logerr (errno, "%s: close on esd socket(%d) failed\n",
263 AUDIO_FUNC, esd->fd);
268 err = pthread_sigmask (SIG_SETMASK, &old_set, NULL);
270 qesd_logerr (err, "pthread_sigmask(restore) failed\n");
274 qemu_free (esd->pcm_buf);
279 static void qesd_fini_out (HWVoiceOut *hw)
282 ESDVoiceOut *esd = (ESDVoiceOut *) hw;
284 audio_pt_lock (&esd->pt, AUDIO_FUNC);
286 audio_pt_unlock_and_signal (&esd->pt, AUDIO_FUNC);
287 audio_pt_join (&esd->pt, &ret, AUDIO_FUNC);
290 if (close (esd->fd)) {
291 qesd_logerr (errno, "failed to close esd socket\n");
296 audio_pt_fini (&esd->pt, AUDIO_FUNC);
298 qemu_free (esd->pcm_buf);
302 static int qesd_ctl_out (HWVoiceOut *hw, int cmd, ...)
310 static void *qesd_thread_in (void *arg)
312 ESDVoiceIn *esd = arg;
313 HWVoiceIn *hw = &esd->hw;
316 threshold = conf.divisor ? hw->samples / conf.divisor : 0;
319 int incr, to_grab, wpos;
326 if (esd->dead > threshold) {
330 if (audio_pt_wait (&esd->pt, AUDIO_FUNC)) {
335 incr = to_grab = esd->dead;
338 if (audio_pt_unlock (&esd->pt, AUDIO_FUNC)) {
344 int chunk = audio_MIN (to_grab, hw->samples - wpos);
345 void *buf = advance (esd->pcm_buf, wpos);
348 nread = read (esd->fd, buf, chunk << hw->info.shift);
350 if (errno == EINTR || errno == EAGAIN) {
353 qesd_logerr (errno, "read failed\n");
357 if (nread != chunk << hw->info.shift) {
358 int rsamples = nread >> hw->info.shift;
359 int rbytes = rsamples << hw->info.shift;
360 if (rbytes != nread) {
361 dolog ("warning: Misaligned write %d (requested %d), "
363 rbytes, nread, hw->info.align + 1);
366 wpos = (wpos + rsamples) % hw->samples;
370 hw->conv (hw->conv_buf + wpos, buf, nread >> hw->info.shift,
372 wpos = (wpos + chunk) % hw->samples;
376 if (audio_pt_lock (&esd->pt, AUDIO_FUNC)) {
386 audio_pt_unlock (&esd->pt, AUDIO_FUNC);
390 static int qesd_run_in (HWVoiceIn *hw)
392 int live, incr, dead;
393 ESDVoiceIn *esd = (ESDVoiceIn *) hw;
395 if (audio_pt_lock (&esd->pt, AUDIO_FUNC)) {
399 live = audio_pcm_hw_get_live_in (hw);
400 dead = hw->samples - live;
401 incr = audio_MIN (dead, esd->incr);
403 esd->dead = dead - incr;
404 hw->wpos = esd->wpos;
406 audio_pt_unlock_and_signal (&esd->pt, AUDIO_FUNC);
409 audio_pt_unlock (&esd->pt, AUDIO_FUNC);
414 static int qesd_read (SWVoiceIn *sw, void *buf, int len)
416 return audio_pcm_sw_read (sw, buf, len);
419 static int qesd_init_in (HWVoiceIn *hw, audsettings_t *as)
421 ESDVoiceIn *esd = (ESDVoiceIn *) hw;
422 audsettings_t obt_as = *as;
423 int esdfmt = ESD_STREAM | ESD_RECORD;
425 sigset_t set, old_set;
429 esdfmt |= (as->nchannels == 2) ? ESD_STEREO : ESD_MONO;
434 obt_as.fmt = AUD_FMT_U8;
439 esdfmt |= ESD_BITS16;
440 obt_as.fmt = AUD_FMT_S16;
445 dolog ("Will use 16 instead of 32 bit samples\n");
446 esdfmt |= ESD_BITS16;
447 obt_as.fmt = AUD_FMT_S16;
450 obt_as.endianness = 0;
452 audio_pcm_init_info (&hw->info, &obt_as);
454 hw->samples = conf.samples;
455 esd->pcm_buf = audio_calloc (AUDIO_FUNC, hw->samples, 1 << hw->info.shift);
457 dolog ("Could not allocate buffer (%d bytes)\n",
458 hw->samples << hw->info.shift);
464 err = pthread_sigmask (SIG_BLOCK, &set, &old_set);
466 qesd_logerr (err, "pthread_sigmask failed\n");
470 esd->fd = esd_record_stream (esdfmt, as->freq, conf.adc_host, NULL);
472 qesd_logerr (errno, "esd_record_stream failed\n");
476 if (audio_pt_init (&esd->pt, qesd_thread_in, esd, AUDIO_CAP, AUDIO_FUNC)) {
480 err = pthread_sigmask (SIG_SETMASK, &old_set, NULL);
482 qesd_logerr (err, "pthread_sigmask(restore) failed\n");
488 if (close (esd->fd)) {
489 qesd_logerr (errno, "%s: close on esd socket(%d) failed\n",
490 AUDIO_FUNC, esd->fd);
495 err = pthread_sigmask (SIG_SETMASK, &old_set, NULL);
497 qesd_logerr (err, "pthread_sigmask(restore) failed\n");
501 qemu_free (esd->pcm_buf);
506 static void qesd_fini_in (HWVoiceIn *hw)
509 ESDVoiceIn *esd = (ESDVoiceIn *) hw;
511 audio_pt_lock (&esd->pt, AUDIO_FUNC);
513 audio_pt_unlock_and_signal (&esd->pt, AUDIO_FUNC);
514 audio_pt_join (&esd->pt, &ret, AUDIO_FUNC);
517 if (close (esd->fd)) {
518 qesd_logerr (errno, "failed to close esd socket\n");
523 audio_pt_fini (&esd->pt, AUDIO_FUNC);
525 qemu_free (esd->pcm_buf);
529 static int qesd_ctl_in (HWVoiceIn *hw, int cmd, ...)
537 static void *qesd_audio_init (void)
542 static void qesd_audio_fini (void *opaque)
548 struct audio_option qesd_options[] = {
549 {"SAMPLES", AUD_OPT_INT, &conf.samples,
550 "buffer size in samples", NULL, 0},
552 {"DIVISOR", AUD_OPT_INT, &conf.divisor,
553 "threshold divisor", NULL, 0},
555 {"DAC_HOST", AUD_OPT_STR, &conf.dac_host,
556 "playback host", NULL, 0},
558 {"ADC_HOST", AUD_OPT_STR, &conf.adc_host,
559 "capture host", NULL, 0},
561 {NULL, 0, NULL, NULL, NULL, 0}
564 struct audio_pcm_ops qesd_pcm_ops = {
578 struct audio_driver esd_audio_driver = {
579 INIT_FIELD (name = ) "esd",
580 INIT_FIELD (descr = )
581 "http://en.wikipedia.org/wiki/Esound",
582 INIT_FIELD (options = ) qesd_options,
583 INIT_FIELD (init = ) qesd_audio_init,
584 INIT_FIELD (fini = ) qesd_audio_fini,
585 INIT_FIELD (pcm_ops = ) &qesd_pcm_ops,
586 INIT_FIELD (can_be_default = ) 0,
587 INIT_FIELD (max_voices_out = ) INT_MAX,
588 INIT_FIELD (max_voices_in = ) INT_MAX,
589 INIT_FIELD (voice_size_out = ) sizeof (ESDVoiceOut),
590 INIT_FIELD (voice_size_in = ) sizeof (ESDVoiceIn)