1
2#include "qemu/osdep.h"
3#include "qemu-common.h"
4#include "audio.h"
5#include "qapi/opts-visitor.h"
6
7#include <pulse/pulseaudio.h>
8
9#define AUDIO_CAP "pulseaudio"
10#include "audio_int.h"
11#include "audio_pt_int.h"
12
13typedef struct {
14 Audiodev *dev;
15 pa_threaded_mainloop *mainloop;
16 pa_context *context;
17} paaudio;
18
19typedef struct {
20 HWVoiceOut hw;
21 int done;
22 int live;
23 int decr;
24 int rpos;
25 pa_stream *stream;
26 void *pcm_buf;
27 struct audio_pt pt;
28 paaudio *g;
29 int samples;
30} PAVoiceOut;
31
32typedef struct {
33 HWVoiceIn hw;
34 int done;
35 int dead;
36 int incr;
37 int wpos;
38 pa_stream *stream;
39 void *pcm_buf;
40 struct audio_pt pt;
41 const void *read_data;
42 size_t read_index, read_length;
43 paaudio *g;
44 int samples;
45} PAVoiceIn;
46
47static void qpa_audio_fini(void *opaque);
48
49static void GCC_FMT_ATTR (2, 3) qpa_logerr (int err, const char *fmt, ...)
50{
51 va_list ap;
52
53 va_start (ap, fmt);
54 AUD_vlog (AUDIO_CAP, fmt, ap);
55 va_end (ap);
56
57 AUD_log (AUDIO_CAP, "Reason: %s\n", pa_strerror (err));
58}
59
60#ifndef PA_CONTEXT_IS_GOOD
61static inline int PA_CONTEXT_IS_GOOD(pa_context_state_t x)
62{
63 return
64 x == PA_CONTEXT_CONNECTING ||
65 x == PA_CONTEXT_AUTHORIZING ||
66 x == PA_CONTEXT_SETTING_NAME ||
67 x == PA_CONTEXT_READY;
68}
69#endif
70
71#ifndef PA_STREAM_IS_GOOD
72static inline int PA_STREAM_IS_GOOD(pa_stream_state_t x)
73{
74 return
75 x == PA_STREAM_CREATING ||
76 x == PA_STREAM_READY;
77}
78#endif
79
80#define CHECK_SUCCESS_GOTO(c, rerror, expression, label) \
81 do { \
82 if (!(expression)) { \
83 if (rerror) { \
84 *(rerror) = pa_context_errno ((c)->context); \
85 } \
86 goto label; \
87 } \
88 } while (0)
89
90#define CHECK_DEAD_GOTO(c, stream, rerror, label) \
91 do { \
92 if (!(c)->context || !PA_CONTEXT_IS_GOOD (pa_context_get_state((c)->context)) || \
93 !(stream) || !PA_STREAM_IS_GOOD (pa_stream_get_state ((stream)))) { \
94 if (((c)->context && pa_context_get_state ((c)->context) == PA_CONTEXT_FAILED) || \
95 ((stream) && pa_stream_get_state ((stream)) == PA_STREAM_FAILED)) { \
96 if (rerror) { \
97 *(rerror) = pa_context_errno ((c)->context); \
98 } \
99 } else { \
100 if (rerror) { \
101 *(rerror) = PA_ERR_BADSTATE; \
102 } \
103 } \
104 goto label; \
105 } \
106 } while (0)
107
108static int qpa_simple_read (PAVoiceIn *p, void *data, size_t length, int *rerror)
109{
110 paaudio *g = p->g;
111
112 pa_threaded_mainloop_lock (g->mainloop);
113
114 CHECK_DEAD_GOTO (g, p->stream, rerror, unlock_and_fail);
115
116 while (length > 0) {
117 size_t l;
118
119 while (!p->read_data) {
120 int r;
121
122 r = pa_stream_peek (p->stream, &p->read_data, &p->read_length);
123 CHECK_SUCCESS_GOTO (g, rerror, r == 0, unlock_and_fail);
124
125 if (!p->read_data) {
126 pa_threaded_mainloop_wait (g->mainloop);
127 CHECK_DEAD_GOTO (g, p->stream, rerror, unlock_and_fail);
128 } else {
129 p->read_index = 0;
130 }
131 }
132
133 l = p->read_length < length ? p->read_length : length;
134 memcpy (data, (const uint8_t *) p->read_data+p->read_index, l);
135
136 data = (uint8_t *) data + l;
137 length -= l;
138
139 p->read_index += l;
140 p->read_length -= l;
141
142 if (!p->read_length) {
143 int r;
144
145 r = pa_stream_drop (p->stream);
146 p->read_data = NULL;
147 p->read_length = 0;
148 p->read_index = 0;
149
150 CHECK_SUCCESS_GOTO (g, rerror, r == 0, unlock_and_fail);
151 }
152 }
153
154 pa_threaded_mainloop_unlock (g->mainloop);
155 return 0;
156
157unlock_and_fail:
158 pa_threaded_mainloop_unlock (g->mainloop);
159 return -1;
160}
161
162static int qpa_simple_write (PAVoiceOut *p, const void *data, size_t length, int *rerror)
163{
164 paaudio *g = p->g;
165
166 pa_threaded_mainloop_lock (g->mainloop);
167
168 CHECK_DEAD_GOTO (g, p->stream, rerror, unlock_and_fail);
169
170 while (length > 0) {
171 size_t l;
172 int r;
173
174 while (!(l = pa_stream_writable_size (p->stream))) {
175 pa_threaded_mainloop_wait (g->mainloop);
176 CHECK_DEAD_GOTO (g, p->stream, rerror, unlock_and_fail);
177 }
178
179 CHECK_SUCCESS_GOTO (g, rerror, l != (size_t) -1, unlock_and_fail);
180
181 if (l > length) {
182 l = length;
183 }
184
185 r = pa_stream_write (p->stream, data, l, NULL, 0LL, PA_SEEK_RELATIVE);
186 CHECK_SUCCESS_GOTO (g, rerror, r >= 0, unlock_and_fail);
187
188 data = (const uint8_t *) data + l;
189 length -= l;
190 }
191
192 pa_threaded_mainloop_unlock (g->mainloop);
193 return 0;
194
195unlock_and_fail:
196 pa_threaded_mainloop_unlock (g->mainloop);
197 return -1;
198}
199
200static void *qpa_thread_out (void *arg)
201{
202 PAVoiceOut *pa = arg;
203 HWVoiceOut *hw = &pa->hw;
204
205 if (audio_pt_lock(&pa->pt, __func__)) {
206 return NULL;
207 }
208
209 for (;;) {
210 int decr, to_mix, rpos;
211
212 for (;;) {
213 if (pa->done) {
214 goto exit;
215 }
216
217 if (pa->live > 0) {
218 break;
219 }
220
221 if (audio_pt_wait(&pa->pt, __func__)) {
222 goto exit;
223 }
224 }
225
226 decr = to_mix = audio_MIN(pa->live, pa->samples >> 5);
227 rpos = pa->rpos;
228
229 if (audio_pt_unlock(&pa->pt, __func__)) {
230 return NULL;
231 }
232
233 while (to_mix) {
234 int error;
235 int chunk = audio_MIN (to_mix, hw->samples - rpos);
236 struct st_sample *src = hw->mix_buf + rpos;
237
238 hw->clip (pa->pcm_buf, src, chunk);
239
240 if (qpa_simple_write (pa, pa->pcm_buf,
241 chunk << hw->info.shift, &error) < 0) {
242 qpa_logerr (error, "pa_simple_write failed\n");
243 return NULL;
244 }
245
246 rpos = (rpos + chunk) % hw->samples;
247 to_mix -= chunk;
248 }
249
250 if (audio_pt_lock(&pa->pt, __func__)) {
251 return NULL;
252 }
253
254 pa->rpos = rpos;
255 pa->live -= decr;
256 pa->decr += decr;
257 }
258
259 exit:
260 audio_pt_unlock(&pa->pt, __func__);
261 return NULL;
262}
263
264static int qpa_run_out (HWVoiceOut *hw, int live)
265{
266 int decr;
267 PAVoiceOut *pa = (PAVoiceOut *) hw;
268
269 if (audio_pt_lock(&pa->pt, __func__)) {
270 return 0;
271 }
272
273 decr = audio_MIN (live, pa->decr);
274 pa->decr -= decr;
275 pa->live = live - decr;
276 hw->rpos = pa->rpos;
277 if (pa->live > 0) {
278 audio_pt_unlock_and_signal(&pa->pt, __func__);
279 }
280 else {
281 audio_pt_unlock(&pa->pt, __func__);
282 }
283 return decr;
284}
285
286static int qpa_write (SWVoiceOut *sw, void *buf, int len)
287{
288 return audio_pcm_sw_write (sw, buf, len);
289}
290
291
292static void *qpa_thread_in (void *arg)
293{
294 PAVoiceIn *pa = arg;
295 HWVoiceIn *hw = &pa->hw;
296
297 if (audio_pt_lock(&pa->pt, __func__)) {
298 return NULL;
299 }
300
301 for (;;) {
302 int incr, to_grab, wpos;
303
304 for (;;) {
305 if (pa->done) {
306 goto exit;
307 }
308
309 if (pa->dead > 0) {
310 break;
311 }
312
313 if (audio_pt_wait(&pa->pt, __func__)) {
314 goto exit;
315 }
316 }
317
318 incr = to_grab = audio_MIN(pa->dead, pa->samples >> 5);
319 wpos = pa->wpos;
320
321 if (audio_pt_unlock(&pa->pt, __func__)) {
322 return NULL;
323 }
324
325 while (to_grab) {
326 int error;
327 int chunk = audio_MIN (to_grab, hw->samples - wpos);
328 void *buf = advance (pa->pcm_buf, wpos);
329
330 if (qpa_simple_read (pa, buf,
331 chunk << hw->info.shift, &error) < 0) {
332 qpa_logerr (error, "pa_simple_read failed\n");
333 return NULL;
334 }
335
336 hw->conv (hw->conv_buf + wpos, buf, chunk);
337 wpos = (wpos + chunk) % hw->samples;
338 to_grab -= chunk;
339 }
340
341 if (audio_pt_lock(&pa->pt, __func__)) {
342 return NULL;
343 }
344
345 pa->wpos = wpos;
346 pa->dead -= incr;
347 pa->incr += incr;
348 }
349
350 exit:
351 audio_pt_unlock(&pa->pt, __func__);
352 return NULL;
353}
354
355static int qpa_run_in (HWVoiceIn *hw)
356{
357 int live, incr, dead;
358 PAVoiceIn *pa = (PAVoiceIn *) hw;
359
360 if (audio_pt_lock(&pa->pt, __func__)) {
361 return 0;
362 }
363
364 live = audio_pcm_hw_get_live_in (hw);
365 dead = hw->samples - live;
366 incr = audio_MIN (dead, pa->incr);
367 pa->incr -= incr;
368 pa->dead = dead - incr;
369 hw->wpos = pa->wpos;
370 if (pa->dead > 0) {
371 audio_pt_unlock_and_signal(&pa->pt, __func__);
372 }
373 else {
374 audio_pt_unlock(&pa->pt, __func__);
375 }
376 return incr;
377}
378
379static int qpa_read (SWVoiceIn *sw, void *buf, int len)
380{
381 return audio_pcm_sw_read (sw, buf, len);
382}
383
384static pa_sample_format_t audfmt_to_pa (AudioFormat afmt, int endianness)
385{
386 int format;
387
388 switch (afmt) {
389 case AUDIO_FORMAT_S8:
390 case AUDIO_FORMAT_U8:
391 format = PA_SAMPLE_U8;
392 break;
393 case AUDIO_FORMAT_S16:
394 case AUDIO_FORMAT_U16:
395 format = endianness ? PA_SAMPLE_S16BE : PA_SAMPLE_S16LE;
396 break;
397 case AUDIO_FORMAT_S32:
398 case AUDIO_FORMAT_U32:
399 format = endianness ? PA_SAMPLE_S32BE : PA_SAMPLE_S32LE;
400 break;
401 default:
402 dolog ("Internal logic error: Bad audio format %d\n", afmt);
403 format = PA_SAMPLE_U8;
404 break;
405 }
406 return format;
407}
408
409static AudioFormat pa_to_audfmt (pa_sample_format_t fmt, int *endianness)
410{
411 switch (fmt) {
412 case PA_SAMPLE_U8:
413 return AUDIO_FORMAT_U8;
414 case PA_SAMPLE_S16BE:
415 *endianness = 1;
416 return AUDIO_FORMAT_S16;
417 case PA_SAMPLE_S16LE:
418 *endianness = 0;
419 return AUDIO_FORMAT_S16;
420 case PA_SAMPLE_S32BE:
421 *endianness = 1;
422 return AUDIO_FORMAT_S32;
423 case PA_SAMPLE_S32LE:
424 *endianness = 0;
425 return AUDIO_FORMAT_S32;
426 default:
427 dolog ("Internal logic error: Bad pa_sample_format %d\n", fmt);
428 return AUDIO_FORMAT_U8;
429 }
430}
431
432static void context_state_cb (pa_context *c, void *userdata)
433{
434 paaudio *g = userdata;
435
436 switch (pa_context_get_state(c)) {
437 case PA_CONTEXT_READY:
438 case PA_CONTEXT_TERMINATED:
439 case PA_CONTEXT_FAILED:
440 pa_threaded_mainloop_signal (g->mainloop, 0);
441 break;
442
443 case PA_CONTEXT_UNCONNECTED:
444 case PA_CONTEXT_CONNECTING:
445 case PA_CONTEXT_AUTHORIZING:
446 case PA_CONTEXT_SETTING_NAME:
447 break;
448 }
449}
450
451static void stream_state_cb (pa_stream *s, void * userdata)
452{
453 paaudio *g = userdata;
454
455 switch (pa_stream_get_state (s)) {
456
457 case PA_STREAM_READY:
458 case PA_STREAM_FAILED:
459 case PA_STREAM_TERMINATED:
460 pa_threaded_mainloop_signal (g->mainloop, 0);
461 break;
462
463 case PA_STREAM_UNCONNECTED:
464 case PA_STREAM_CREATING:
465 break;
466 }
467}
468
469static void stream_request_cb (pa_stream *s, size_t length, void *userdata)
470{
471 paaudio *g = userdata;
472
473 pa_threaded_mainloop_signal (g->mainloop, 0);
474}
475
476static pa_stream *qpa_simple_new (
477 paaudio *g,
478 const char *name,
479 pa_stream_direction_t dir,
480 const char *dev,
481 const pa_sample_spec *ss,
482 const pa_channel_map *map,
483 const pa_buffer_attr *attr,
484 int *rerror)
485{
486 int r;
487 pa_stream *stream;
488
489 pa_threaded_mainloop_lock (g->mainloop);
490
491 stream = pa_stream_new (g->context, name, ss, map);
492 if (!stream) {
493 goto fail;
494 }
495
496 pa_stream_set_state_callback (stream, stream_state_cb, g);
497 pa_stream_set_read_callback (stream, stream_request_cb, g);
498 pa_stream_set_write_callback (stream, stream_request_cb, g);
499
500 if (dir == PA_STREAM_PLAYBACK) {
501 r = pa_stream_connect_playback (stream, dev, attr,
502 PA_STREAM_INTERPOLATE_TIMING
503#ifdef PA_STREAM_ADJUST_LATENCY
504 |PA_STREAM_ADJUST_LATENCY
505#endif
506 |PA_STREAM_AUTO_TIMING_UPDATE, NULL, NULL);
507 } else {
508 r = pa_stream_connect_record (stream, dev, attr,
509 PA_STREAM_INTERPOLATE_TIMING
510#ifdef PA_STREAM_ADJUST_LATENCY
511 |PA_STREAM_ADJUST_LATENCY
512#endif
513 |PA_STREAM_AUTO_TIMING_UPDATE);
514 }
515
516 if (r < 0) {
517 goto fail;
518 }
519
520 pa_threaded_mainloop_unlock (g->mainloop);
521
522 return stream;
523
524fail:
525 pa_threaded_mainloop_unlock (g->mainloop);
526
527 if (stream) {
528 pa_stream_unref (stream);
529 }
530
531 *rerror = pa_context_errno (g->context);
532
533 return NULL;
534}
535
536static int qpa_init_out(HWVoiceOut *hw, struct audsettings *as,
537 void *drv_opaque)
538{
539 int error;
540 pa_sample_spec ss;
541 pa_buffer_attr ba;
542 struct audsettings obt_as = *as;
543 PAVoiceOut *pa = (PAVoiceOut *) hw;
544 paaudio *g = pa->g = drv_opaque;
545 AudiodevPaOptions *popts = &g->dev->u.pa;
546 AudiodevPaPerDirectionOptions *ppdo = popts->out;
547
548 ss.format = audfmt_to_pa (as->fmt, as->endianness);
549 ss.channels = as->nchannels;
550 ss.rate = as->freq;
551
552 ba.tlength = pa_usec_to_bytes(ppdo->latency, &ss);
553 ba.minreq = -1;
554 ba.maxlength = -1;
555 ba.prebuf = -1;
556
557 obt_as.fmt = pa_to_audfmt (ss.format, &obt_as.endianness);
558
559 pa->stream = qpa_simple_new (
560 g,
561 "qemu",
562 PA_STREAM_PLAYBACK,
563 ppdo->has_name ? ppdo->name : NULL,
564 &ss,
565 NULL,
566 &ba,
567 &error
568 );
569 if (!pa->stream) {
570 qpa_logerr (error, "pa_simple_new for playback failed\n");
571 goto fail1;
572 }
573
574 audio_pcm_init_info (&hw->info, &obt_as);
575 hw->samples = pa->samples = audio_buffer_samples(
576 qapi_AudiodevPaPerDirectionOptions_base(ppdo),
577 &obt_as, ppdo->buffer_length);
578 pa->pcm_buf = audio_calloc(__func__, hw->samples, 1 << hw->info.shift);
579 pa->rpos = hw->rpos;
580 if (!pa->pcm_buf) {
581 dolog ("Could not allocate buffer (%d bytes)\n",
582 hw->samples << hw->info.shift);
583 goto fail2;
584 }
585
586 if (audio_pt_init(&pa->pt, qpa_thread_out, hw, AUDIO_CAP, __func__)) {
587 goto fail3;
588 }
589
590 return 0;
591
592 fail3:
593 g_free (pa->pcm_buf);
594 pa->pcm_buf = NULL;
595 fail2:
596 if (pa->stream) {
597 pa_stream_unref (pa->stream);
598 pa->stream = NULL;
599 }
600 fail1:
601 return -1;
602}
603
604static int qpa_init_in(HWVoiceIn *hw, struct audsettings *as, void *drv_opaque)
605{
606 int error;
607 pa_sample_spec ss;
608 pa_buffer_attr ba;
609 struct audsettings obt_as = *as;
610 PAVoiceIn *pa = (PAVoiceIn *) hw;
611 paaudio *g = pa->g = drv_opaque;
612 AudiodevPaOptions *popts = &g->dev->u.pa;
613 AudiodevPaPerDirectionOptions *ppdo = popts->in;
614
615 ss.format = audfmt_to_pa (as->fmt, as->endianness);
616 ss.channels = as->nchannels;
617 ss.rate = as->freq;
618
619 ba.fragsize = pa_usec_to_bytes(ppdo->latency, &ss);
620 ba.maxlength = -1;
621 ba.minreq = -1;
622 ba.prebuf = -1;
623
624 obt_as.fmt = pa_to_audfmt (ss.format, &obt_as.endianness);
625
626 pa->stream = qpa_simple_new (
627 g,
628 "qemu",
629 PA_STREAM_RECORD,
630 ppdo->has_name ? ppdo->name : NULL,
631 &ss,
632 NULL,
633 &ba,
634 &error
635 );
636 if (!pa->stream) {
637 qpa_logerr (error, "pa_simple_new for capture failed\n");
638 goto fail1;
639 }
640
641 audio_pcm_init_info (&hw->info, &obt_as);
642 hw->samples = pa->samples = audio_buffer_samples(
643 qapi_AudiodevPaPerDirectionOptions_base(ppdo),
644 &obt_as, ppdo->buffer_length);
645 pa->pcm_buf = audio_calloc(__func__, hw->samples, 1 << hw->info.shift);
646 pa->wpos = hw->wpos;
647 if (!pa->pcm_buf) {
648 dolog ("Could not allocate buffer (%d bytes)\n",
649 hw->samples << hw->info.shift);
650 goto fail2;
651 }
652
653 if (audio_pt_init(&pa->pt, qpa_thread_in, hw, AUDIO_CAP, __func__)) {
654 goto fail3;
655 }
656
657 return 0;
658
659 fail3:
660 g_free (pa->pcm_buf);
661 pa->pcm_buf = NULL;
662 fail2:
663 if (pa->stream) {
664 pa_stream_unref (pa->stream);
665 pa->stream = NULL;
666 }
667 fail1:
668 return -1;
669}
670
671static void qpa_fini_out (HWVoiceOut *hw)
672{
673 void *ret;
674 PAVoiceOut *pa = (PAVoiceOut *) hw;
675
676 audio_pt_lock(&pa->pt, __func__);
677 pa->done = 1;
678 audio_pt_unlock_and_signal(&pa->pt, __func__);
679 audio_pt_join(&pa->pt, &ret, __func__);
680
681 if (pa->stream) {
682 pa_stream_unref (pa->stream);
683 pa->stream = NULL;
684 }
685
686 audio_pt_fini(&pa->pt, __func__);
687 g_free (pa->pcm_buf);
688 pa->pcm_buf = NULL;
689}
690
691static void qpa_fini_in (HWVoiceIn *hw)
692{
693 void *ret;
694 PAVoiceIn *pa = (PAVoiceIn *) hw;
695
696 audio_pt_lock(&pa->pt, __func__);
697 pa->done = 1;
698 audio_pt_unlock_and_signal(&pa->pt, __func__);
699 audio_pt_join(&pa->pt, &ret, __func__);
700
701 if (pa->stream) {
702 pa_stream_unref (pa->stream);
703 pa->stream = NULL;
704 }
705
706 audio_pt_fini(&pa->pt, __func__);
707 g_free (pa->pcm_buf);
708 pa->pcm_buf = NULL;
709}
710
711static int qpa_ctl_out (HWVoiceOut *hw, int cmd, ...)
712{
713 PAVoiceOut *pa = (PAVoiceOut *) hw;
714 pa_operation *op;
715 pa_cvolume v;
716 paaudio *g = pa->g;
717
718#ifdef PA_CHECK_VERSION
719 pa_cvolume_init (&v);
720#endif
721
722 switch (cmd) {
723 case VOICE_VOLUME:
724 {
725 SWVoiceOut *sw;
726 va_list ap;
727
728 va_start (ap, cmd);
729 sw = va_arg (ap, SWVoiceOut *);
730 va_end (ap);
731
732 v.channels = 2;
733 v.values[0] = ((PA_VOLUME_NORM - PA_VOLUME_MUTED) * sw->vol.l) / UINT32_MAX;
734 v.values[1] = ((PA_VOLUME_NORM - PA_VOLUME_MUTED) * sw->vol.r) / UINT32_MAX;
735
736 pa_threaded_mainloop_lock (g->mainloop);
737
738 op = pa_context_set_sink_input_volume (g->context,
739 pa_stream_get_index (pa->stream),
740 &v, NULL, NULL);
741 if (!op)
742 qpa_logerr (pa_context_errno (g->context),
743 "set_sink_input_volume() failed\n");
744 else
745 pa_operation_unref (op);
746
747 op = pa_context_set_sink_input_mute (g->context,
748 pa_stream_get_index (pa->stream),
749 sw->vol.mute, NULL, NULL);
750 if (!op) {
751 qpa_logerr (pa_context_errno (g->context),
752 "set_sink_input_mute() failed\n");
753 } else {
754 pa_operation_unref (op);
755 }
756
757 pa_threaded_mainloop_unlock (g->mainloop);
758 }
759 }
760 return 0;
761}
762
763static int qpa_ctl_in (HWVoiceIn *hw, int cmd, ...)
764{
765 PAVoiceIn *pa = (PAVoiceIn *) hw;
766 pa_operation *op;
767 pa_cvolume v;
768 paaudio *g = pa->g;
769
770#ifdef PA_CHECK_VERSION
771 pa_cvolume_init (&v);
772#endif
773
774 switch (cmd) {
775 case VOICE_VOLUME:
776 {
777 SWVoiceIn *sw;
778 va_list ap;
779
780 va_start (ap, cmd);
781 sw = va_arg (ap, SWVoiceIn *);
782 va_end (ap);
783
784 v.channels = 2;
785 v.values[0] = ((PA_VOLUME_NORM - PA_VOLUME_MUTED) * sw->vol.l) / UINT32_MAX;
786 v.values[1] = ((PA_VOLUME_NORM - PA_VOLUME_MUTED) * sw->vol.r) / UINT32_MAX;
787
788 pa_threaded_mainloop_lock (g->mainloop);
789
790 op = pa_context_set_source_output_volume (g->context,
791 pa_stream_get_index (pa->stream),
792 &v, NULL, NULL);
793 if (!op) {
794 qpa_logerr (pa_context_errno (g->context),
795 "set_source_output_volume() failed\n");
796 } else {
797 pa_operation_unref(op);
798 }
799
800 op = pa_context_set_source_output_mute (g->context,
801 pa_stream_get_index (pa->stream),
802 sw->vol.mute, NULL, NULL);
803 if (!op) {
804 qpa_logerr (pa_context_errno (g->context),
805 "set_source_output_mute() failed\n");
806 } else {
807 pa_operation_unref (op);
808 }
809
810 pa_threaded_mainloop_unlock (g->mainloop);
811 }
812 }
813 return 0;
814}
815
816static int qpa_validate_per_direction_opts(Audiodev *dev,
817 AudiodevPaPerDirectionOptions *pdo)
818{
819 if (!pdo->has_buffer_length) {
820 pdo->has_buffer_length = true;
821 pdo->buffer_length = 46440;
822 }
823 if (!pdo->has_latency) {
824 pdo->has_latency = true;
825 pdo->latency = 15000;
826 }
827 return 1;
828}
829
830static void *qpa_audio_init(Audiodev *dev)
831{
832 paaudio *g;
833 AudiodevPaOptions *popts = &dev->u.pa;
834 const char *server;
835
836 if (!popts->has_server) {
837 char pidfile[64];
838 char *runtime;
839 struct stat st;
840
841 runtime = getenv("XDG_RUNTIME_DIR");
842 if (!runtime) {
843 return NULL;
844 }
845 snprintf(pidfile, sizeof(pidfile), "%s/pulse/pid", runtime);
846 if (stat(pidfile, &st) != 0) {
847 return NULL;
848 }
849 }
850
851 assert(dev->driver == AUDIODEV_DRIVER_PA);
852
853 g = g_malloc(sizeof(paaudio));
854 server = popts->has_server ? popts->server : NULL;
855
856 if (!qpa_validate_per_direction_opts(dev, popts->in)) {
857 goto fail;
858 }
859 if (!qpa_validate_per_direction_opts(dev, popts->out)) {
860 goto fail;
861 }
862
863 g->dev = dev;
864 g->mainloop = NULL;
865 g->context = NULL;
866
867 g->mainloop = pa_threaded_mainloop_new ();
868 if (!g->mainloop) {
869 goto fail;
870 }
871
872 g->context = pa_context_new (pa_threaded_mainloop_get_api (g->mainloop),
873 server);
874 if (!g->context) {
875 goto fail;
876 }
877
878 pa_context_set_state_callback (g->context, context_state_cb, g);
879
880 if (pa_context_connect(g->context, server, 0, NULL) < 0) {
881 qpa_logerr (pa_context_errno (g->context),
882 "pa_context_connect() failed\n");
883 goto fail;
884 }
885
886 pa_threaded_mainloop_lock (g->mainloop);
887
888 if (pa_threaded_mainloop_start (g->mainloop) < 0) {
889 goto unlock_and_fail;
890 }
891
892 for (;;) {
893 pa_context_state_t state;
894
895 state = pa_context_get_state (g->context);
896
897 if (state == PA_CONTEXT_READY) {
898 break;
899 }
900
901 if (!PA_CONTEXT_IS_GOOD (state)) {
902 qpa_logerr (pa_context_errno (g->context),
903 "Wrong context state\n");
904 goto unlock_and_fail;
905 }
906
907
908 pa_threaded_mainloop_wait (g->mainloop);
909 }
910
911 pa_threaded_mainloop_unlock (g->mainloop);
912
913 return g;
914
915unlock_and_fail:
916 pa_threaded_mainloop_unlock (g->mainloop);
917fail:
918 AUD_log (AUDIO_CAP, "Failed to initialize PA context");
919 qpa_audio_fini(g);
920 return NULL;
921}
922
923static void qpa_audio_fini (void *opaque)
924{
925 paaudio *g = opaque;
926
927 if (g->mainloop) {
928 pa_threaded_mainloop_stop (g->mainloop);
929 }
930
931 if (g->context) {
932 pa_context_disconnect (g->context);
933 pa_context_unref (g->context);
934 }
935
936 if (g->mainloop) {
937 pa_threaded_mainloop_free (g->mainloop);
938 }
939
940 g_free(g);
941}
942
943static struct audio_pcm_ops qpa_pcm_ops = {
944 .init_out = qpa_init_out,
945 .fini_out = qpa_fini_out,
946 .run_out = qpa_run_out,
947 .write = qpa_write,
948 .ctl_out = qpa_ctl_out,
949
950 .init_in = qpa_init_in,
951 .fini_in = qpa_fini_in,
952 .run_in = qpa_run_in,
953 .read = qpa_read,
954 .ctl_in = qpa_ctl_in
955};
956
957static struct audio_driver pa_audio_driver = {
958 .name = "pa",
959 .descr = "http://www.pulseaudio.org/",
960 .init = qpa_audio_init,
961 .fini = qpa_audio_fini,
962 .pcm_ops = &qpa_pcm_ops,
963 .can_be_default = 1,
964 .max_voices_out = INT_MAX,
965 .max_voices_in = INT_MAX,
966 .voice_size_out = sizeof (PAVoiceOut),
967 .voice_size_in = sizeof (PAVoiceIn),
968 .ctl_caps = VOICE_VOLUME_CAP
969};
970
971static void register_audio_pa(void)
972{
973 audio_driver_register(&pa_audio_driver);
974}
975type_init(register_audio_pa);
976
