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"
28 #define AUDIO_CAP "esd"
29 #include "audio_int.h"
30 #include "audio_pt_int.h"
64 static void GCC_FMT_ATTR (2, 3) qesd_logerr (int err, const char *fmt, ...)
69 AUD_vlog (AUDIO_CAP, fmt, ap);
72 AUD_log (AUDIO_CAP, "Reason: %s\n", strerror (err));
76 static void *qesd_thread_out (void *arg)
78 ESDVoiceOut *esd = arg;
79 HWVoiceOut *hw = &esd->hw;
82 threshold = conf.divisor ? hw->samples / conf.divisor : 0;
84 if (audio_pt_lock (&esd->pt, AUDIO_FUNC)) {
89 int decr, to_mix, rpos;
96 if (esd->live > threshold) {
100 if (audio_pt_wait (&esd->pt, AUDIO_FUNC)) {
105 decr = to_mix = esd->live;
108 if (audio_pt_unlock (&esd->pt, AUDIO_FUNC)) {
114 int chunk = audio_MIN (to_mix, hw->samples - rpos);
115 struct st_sample *src = hw->mix_buf + rpos;
117 hw->clip (esd->pcm_buf, src, chunk);
120 written = write (esd->fd, esd->pcm_buf, chunk << hw->info.shift);
122 if (errno == EINTR || errno == EAGAIN) {
125 qesd_logerr (errno, "write failed\n");
129 if (written != chunk << hw->info.shift) {
130 int wsamples = written >> hw->info.shift;
131 int wbytes = wsamples << hw->info.shift;
132 if (wbytes != written) {
133 dolog ("warning: Misaligned write %d (requested %zd), "
135 wbytes, written, hw->info.align + 1);
138 rpos = (rpos + wsamples) % hw->samples;
142 rpos = (rpos + chunk) % hw->samples;
146 if (audio_pt_lock (&esd->pt, AUDIO_FUNC)) {
156 audio_pt_unlock (&esd->pt, AUDIO_FUNC);
160 static int qesd_run_out (HWVoiceOut *hw, int live)
163 ESDVoiceOut *esd = (ESDVoiceOut *) hw;
165 if (audio_pt_lock (&esd->pt, AUDIO_FUNC)) {
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, struct audsettings *as)
189 ESDVoiceOut *esd = (ESDVoiceOut *) hw;
190 struct audsettings obt_as = *as;
191 int esdfmt = ESD_STREAM | ESD_PLAY;
193 esdfmt |= (as->nchannels == 2) ? ESD_STEREO : ESD_MONO;
198 obt_as.fmt = AUD_FMT_U8;
203 dolog ("Will use 16 instead of 32 bit samples\n");
208 esdfmt |= ESD_BITS16;
209 obt_as.fmt = AUD_FMT_S16;
213 dolog ("Internal logic error: Bad audio format %d\n", as->fmt);
217 obt_as.endianness = AUDIO_HOST_ENDIANNESS;
219 audio_pcm_init_info (&hw->info, &obt_as);
221 hw->samples = conf.samples;
222 esd->pcm_buf = audio_calloc (AUDIO_FUNC, hw->samples, 1 << hw->info.shift);
224 dolog ("Could not allocate buffer (%d bytes)\n",
225 hw->samples << hw->info.shift);
229 esd->fd = esd_play_stream (esdfmt, as->freq, conf.dac_host, NULL);
231 qesd_logerr (errno, "esd_play_stream failed\n");
235 if (audio_pt_init (&esd->pt, qesd_thread_out, esd, AUDIO_CAP, AUDIO_FUNC)) {
242 if (close (esd->fd)) {
243 qesd_logerr (errno, "%s: close on esd socket(%d) failed\n",
244 AUDIO_FUNC, esd->fd);
249 g_free (esd->pcm_buf);
254 static void qesd_fini_out (HWVoiceOut *hw)
257 ESDVoiceOut *esd = (ESDVoiceOut *) hw;
259 audio_pt_lock (&esd->pt, AUDIO_FUNC);
261 audio_pt_unlock_and_signal (&esd->pt, AUDIO_FUNC);
262 audio_pt_join (&esd->pt, &ret, AUDIO_FUNC);
265 if (close (esd->fd)) {
266 qesd_logerr (errno, "failed to close esd socket\n");
271 audio_pt_fini (&esd->pt, AUDIO_FUNC);
273 g_free (esd->pcm_buf);
277 static int qesd_ctl_out (HWVoiceOut *hw, int cmd, ...)
285 static void *qesd_thread_in (void *arg)
287 ESDVoiceIn *esd = arg;
288 HWVoiceIn *hw = &esd->hw;
291 threshold = conf.divisor ? hw->samples / conf.divisor : 0;
293 if (audio_pt_lock (&esd->pt, AUDIO_FUNC)) {
298 int incr, to_grab, wpos;
305 if (esd->dead > threshold) {
309 if (audio_pt_wait (&esd->pt, AUDIO_FUNC)) {
314 incr = to_grab = esd->dead;
317 if (audio_pt_unlock (&esd->pt, AUDIO_FUNC)) {
323 int chunk = audio_MIN (to_grab, hw->samples - wpos);
324 void *buf = advance (esd->pcm_buf, wpos);
327 nread = read (esd->fd, buf, chunk << hw->info.shift);
329 if (errno == EINTR || errno == EAGAIN) {
332 qesd_logerr (errno, "read failed\n");
336 if (nread != chunk << hw->info.shift) {
337 int rsamples = nread >> hw->info.shift;
338 int rbytes = rsamples << hw->info.shift;
339 if (rbytes != nread) {
340 dolog ("warning: Misaligned write %d (requested %zd), "
342 rbytes, nread, hw->info.align + 1);
345 wpos = (wpos + rsamples) % hw->samples;
349 hw->conv (hw->conv_buf + wpos, buf, nread >> hw->info.shift);
350 wpos = (wpos + chunk) % hw->samples;
354 if (audio_pt_lock (&esd->pt, AUDIO_FUNC)) {
364 audio_pt_unlock (&esd->pt, AUDIO_FUNC);
368 static int qesd_run_in (HWVoiceIn *hw)
370 int live, incr, dead;
371 ESDVoiceIn *esd = (ESDVoiceIn *) hw;
373 if (audio_pt_lock (&esd->pt, AUDIO_FUNC)) {
377 live = audio_pcm_hw_get_live_in (hw);
378 dead = hw->samples - live;
379 incr = audio_MIN (dead, esd->incr);
381 esd->dead = dead - incr;
382 hw->wpos = esd->wpos;
384 audio_pt_unlock_and_signal (&esd->pt, AUDIO_FUNC);
387 audio_pt_unlock (&esd->pt, AUDIO_FUNC);
392 static int qesd_read (SWVoiceIn *sw, void *buf, int len)
394 return audio_pcm_sw_read (sw, buf, len);
397 static int qesd_init_in (HWVoiceIn *hw, struct audsettings *as)
399 ESDVoiceIn *esd = (ESDVoiceIn *) hw;
400 struct audsettings obt_as = *as;
401 int esdfmt = ESD_STREAM | ESD_RECORD;
403 esdfmt |= (as->nchannels == 2) ? ESD_STEREO : ESD_MONO;
408 obt_as.fmt = AUD_FMT_U8;
413 esdfmt |= ESD_BITS16;
414 obt_as.fmt = AUD_FMT_S16;
419 dolog ("Will use 16 instead of 32 bit samples\n");
420 esdfmt |= ESD_BITS16;
421 obt_as.fmt = AUD_FMT_S16;
424 obt_as.endianness = AUDIO_HOST_ENDIANNESS;
426 audio_pcm_init_info (&hw->info, &obt_as);
428 hw->samples = conf.samples;
429 esd->pcm_buf = audio_calloc (AUDIO_FUNC, hw->samples, 1 << hw->info.shift);
431 dolog ("Could not allocate buffer (%d bytes)\n",
432 hw->samples << hw->info.shift);
436 esd->fd = esd_record_stream (esdfmt, as->freq, conf.adc_host, NULL);
438 qesd_logerr (errno, "esd_record_stream failed\n");
442 if (audio_pt_init (&esd->pt, qesd_thread_in, esd, AUDIO_CAP, AUDIO_FUNC)) {
449 if (close (esd->fd)) {
450 qesd_logerr (errno, "%s: close on esd socket(%d) failed\n",
451 AUDIO_FUNC, esd->fd);
456 g_free (esd->pcm_buf);
461 static void qesd_fini_in (HWVoiceIn *hw)
464 ESDVoiceIn *esd = (ESDVoiceIn *) hw;
466 audio_pt_lock (&esd->pt, AUDIO_FUNC);
468 audio_pt_unlock_and_signal (&esd->pt, AUDIO_FUNC);
469 audio_pt_join (&esd->pt, &ret, AUDIO_FUNC);
472 if (close (esd->fd)) {
473 qesd_logerr (errno, "failed to close esd socket\n");
478 audio_pt_fini (&esd->pt, AUDIO_FUNC);
480 g_free (esd->pcm_buf);
484 static int qesd_ctl_in (HWVoiceIn *hw, int cmd, ...)
492 static void *qesd_audio_init (void)
497 static void qesd_audio_fini (void *opaque)
503 struct audio_option qesd_options[] = {
507 .valp = &conf.samples,
508 .descr = "buffer size in samples"
513 .valp = &conf.divisor,
514 .descr = "threshold divisor"
519 .valp = &conf.dac_host,
520 .descr = "playback host"
525 .valp = &conf.adc_host,
526 .descr = "capture host"
528 { /* End of list */ }
531 static struct audio_pcm_ops qesd_pcm_ops = {
532 .init_out = qesd_init_out,
533 .fini_out = qesd_fini_out,
534 .run_out = qesd_run_out,
536 .ctl_out = qesd_ctl_out,
538 .init_in = qesd_init_in,
539 .fini_in = qesd_fini_in,
540 .run_in = qesd_run_in,
542 .ctl_in = qesd_ctl_in,
545 struct audio_driver esd_audio_driver = {
547 .descr = "http://en.wikipedia.org/wiki/Esound",
548 .options = qesd_options,
549 .init = qesd_audio_init,
550 .fini = qesd_audio_fini,
551 .pcm_ops = &qesd_pcm_ops,
553 .max_voices_out = INT_MAX,
554 .max_voices_in = INT_MAX,
555 .voice_size_out = sizeof (ESDVoiceOut),
556 .voice_size_in = sizeof (ESDVoiceIn)