1
2#include "qemu/osdep.h"
3#include "qemu-common.h"
4#include "audio.h"
5
6#include <pulse/pulseaudio.h>
7
8#define AUDIO_CAP "pulseaudio"
9#include "audio_int.h"
10#include "audio_pt_int.h"
11
12typedef struct {
13 int samples;
14 char *server;
15 char *sink;
16 char *source;
17} PAConf;
18
19typedef struct {
20 PAConf conf;
21 pa_threaded_mainloop *mainloop;
22 pa_context *context;
23} paaudio;
24
25typedef struct {
26 HWVoiceOut hw;
27 int done;
28 int live;
29 int decr;
30 int rpos;
31 pa_stream *stream;
32 void *pcm_buf;
33 struct audio_pt pt;
34 paaudio *g;
35} PAVoiceOut;
36
37typedef struct {
38 HWVoiceIn hw;
39 int done;
40 int dead;
41 int incr;
42 int wpos;
43 pa_stream *stream;
44 void *pcm_buf;
45 struct audio_pt pt;
46 const void *read_data;
47 size_t read_index, read_length;
48 paaudio *g;
49} PAVoiceIn;
50
51static void qpa_audio_fini(void *opaque);
52
53static void GCC_FMT_ATTR (2, 3) qpa_logerr (int err, const char *fmt, ...)
54{
55 va_list ap;
56
57 va_start (ap, fmt);
58 AUD_vlog (AUDIO_CAP, fmt, ap);
59 va_end (ap);
60
61 AUD_log (AUDIO_CAP, "Reason: %s\n", pa_strerror (err));
62}
63
64#ifndef PA_CONTEXT_IS_GOOD
65static inline int PA_CONTEXT_IS_GOOD(pa_context_state_t x)
66{
67 return
68 x == PA_CONTEXT_CONNECTING ||
69 x == PA_CONTEXT_AUTHORIZING ||
70 x == PA_CONTEXT_SETTING_NAME ||
71 x == PA_CONTEXT_READY;
72}
73#endif
74
75#ifndef PA_STREAM_IS_GOOD
76static inline int PA_STREAM_IS_GOOD(pa_stream_state_t x)
77{
78 return
79 x == PA_STREAM_CREATING ||
80 x == PA_STREAM_READY;
81}
82#endif
83
84#define CHECK_SUCCESS_GOTO(c, rerror, expression, label) \
85 do { \
86 if (!(expression)) { \
87 if (rerror) { \
88 *(rerror) = pa_context_errno ((c)->context); \
89 } \
90 goto label; \
91 } \
92 } while (0)
93
94#define CHECK_DEAD_GOTO(c, stream, rerror, label) \
95 do { \
96 if (!(c)->context || !PA_CONTEXT_IS_GOOD (pa_context_get_state((c)->context)) || \
97 !(stream) || !PA_STREAM_IS_GOOD (pa_stream_get_state ((stream)))) { \
98 if (((c)->context && pa_context_get_state ((c)->context) == PA_CONTEXT_FAILED) || \
99 ((stream) && pa_stream_get_state ((stream)) == PA_STREAM_FAILED)) { \
100 if (rerror) { \
101 *(rerror) = pa_context_errno ((c)->context); \
102 } \
103 } else { \
104 if (rerror) { \
105 *(rerror) = PA_ERR_BADSTATE; \
106 } \
107 } \
108 goto label; \
109 } \
110 } while (0)
111
112static int qpa_simple_read (PAVoiceIn *p, void *data, size_t length, int *rerror)
113{
114 paaudio *g = p->g;
115
116 pa_threaded_mainloop_lock (g->mainloop);
117
118 CHECK_DEAD_GOTO (g, p->stream, rerror, unlock_and_fail);
119
120 while (length > 0) {
121 size_t l;
122
123 while (!p->read_data) {
124 int r;
125
126 r = pa_stream_peek (p->stream, &p->read_data, &p->read_length);
127 CHECK_SUCCESS_GOTO (g, rerror, r == 0, unlock_and_fail);
128
129 if (!p->read_data) {
130 pa_threaded_mainloop_wait (g->mainloop);
131 CHECK_DEAD_GOTO (g, p->stream, rerror, unlock_and_fail);
132 } else {
133 p->read_index = 0;
134 }
135 }
136
137 l = p->read_length < length ? p->read_length : length;
138 memcpy (data, (const uint8_t *) p->read_data+p->read_index, l);
139
140 data = (uint8_t *) data + l;
141 length -= l;
142
143 p->read_index += l;
144 p->read_length -= l;
145
146 if (!p->read_length) {
147 int r;
148
149 r = pa_stream_drop (p->stream);
150 p->read_data = NULL;
151 p->read_length = 0;
152 p->read_index = 0;
153
154 CHECK_SUCCESS_GOTO (g, rerror, r == 0, unlock_and_fail);
155 }
156 }
157
158 pa_threaded_mainloop_unlock (g->mainloop);
159 return 0;
160
161unlock_and_fail:
162 pa_threaded_mainloop_unlock (g->mainloop);
163 return -1;
164}
165
166static int qpa_simple_write (PAVoiceOut *p, const void *data, size_t length, int *rerror)
167{
168 paaudio *g = p->g;
169
170 pa_threaded_mainloop_lock (g->mainloop);
171
172 CHECK_DEAD_GOTO (g, p->stream, rerror, unlock_and_fail);
173
174 while (length > 0) {
175 size_t l;
176 int r;
177
178 while (!(l = pa_stream_writable_size (p->stream))) {
179 pa_threaded_mainloop_wait (g->mainloop);
180 CHECK_DEAD_GOTO (g, p->stream, rerror, unlock_and_fail);
181 }
182
183 CHECK_SUCCESS_GOTO (g, rerror, l != (size_t) -1, unlock_and_fail);
184
185 if (l > length) {
186 l = length;
187 }
188
189 r = pa_stream_write (p->stream, data, l, NULL, 0LL, PA_SEEK_RELATIVE);
190 CHECK_SUCCESS_GOTO (g, rerror, r >= 0, unlock_and_fail);
191
192 data = (const uint8_t *) data + l;
193 length -= l;
194 }
195
196 pa_threaded_mainloop_unlock (g->mainloop);
197 return 0;
198
199unlock_and_fail:
200 pa_threaded_mainloop_unlock (g->mainloop);
201 return -1;
202}
203
204static void *qpa_thread_out (void *arg)
205{
206 PAVoiceOut *pa = arg;
207 HWVoiceOut *hw = &pa->hw;
208
209 if (audio_pt_lock(&pa->pt, __func__)) {
210 return NULL;
211 }
212
213 for (;;) {
214 int decr, to_mix, rpos;
215
216 for (;;) {
217 if (pa->done) {
218 goto exit;
219 }
220
221 if (pa->live > 0) {
222 break;
223 }
224
225 if (audio_pt_wait(&pa->pt, __func__)) {
226 goto exit;
227 }
228 }
229
230 decr = to_mix = audio_MIN(pa->live, pa->g->conf.samples >> 5);
231 rpos = pa->rpos;
232
233 if (audio_pt_unlock(&pa->pt, __func__)) {
234 return NULL;
235 }
236
237 while (to_mix) {
238 int error;
239 int chunk = audio_MIN (to_mix, hw->samples - rpos);
240 struct st_sample *src = hw->mix_buf + rpos;
241
242 hw->clip (pa->pcm_buf, src, chunk);
243
244 if (qpa_simple_write (pa, pa->pcm_buf,
245 chunk << hw->info.shift, &error) < 0) {
246 qpa_logerr (error, "pa_simple_write failed\n");
247 return NULL;
248 }
249
250 rpos = (rpos + chunk) % hw->samples;
251 to_mix -= chunk;
252 }
253
254 if (audio_pt_lock(&pa->pt, __func__)) {
255 return NULL;
256 }
257
258 pa->rpos = rpos;
259 pa->live -= decr;
260 pa->decr += decr;
261 }
262
263 exit:
264 audio_pt_unlock(&pa->pt, __func__);
265 return NULL;
266}
267
268static int qpa_run_out (HWVoiceOut *hw, int live)
269{
270 int decr;
271 PAVoiceOut *pa = (PAVoiceOut *) hw;
272
273 if (audio_pt_lock(&pa->pt, __func__)) {
274 return 0;
275 }
276
277 decr = audio_MIN (live, pa->decr);
278 pa->decr -= decr;
279 pa->live = live - decr;
280 hw->rpos = pa->rpos;
281 if (pa->live > 0) {
282 audio_pt_unlock_and_signal(&pa->pt, __func__);
283 }
284 else {
285 audio_pt_unlock(&pa->pt, __func__);
286 }
287 return decr;
288}
289
290static int qpa_write (SWVoiceOut *sw, void *buf, int len)
291{
292 return audio_pcm_sw_write (sw, buf, len);
293}
294
295
296static void *qpa_thread_in (void *arg)
297{
298 PAVoiceIn *pa = arg;
299 HWVoiceIn *hw = &pa->hw;
300
301 if (audio_pt_lock(&pa->pt, __func__)) {
302 return NULL;
303 }
304
305 for (;;) {
306 int incr, to_grab, wpos;
307
308 for (;;) {
309 if (pa->done) {
310 goto exit;
311 }
312
313 if (pa->dead > 0) {
314 break;
315 }
316
317 if (audio_pt_wait(&pa->pt, __func__)) {
318 goto exit;
319 }
320 }
321
322 incr = to_grab = audio_MIN(pa->dead, pa->g->conf.samples >> 5);
323 wpos = pa->wpos;
324
325 if (audio_pt_unlock(&pa->pt, __func__)) {
326 return NULL;
327 }
328
329 while (to_grab) {
330 int error;
331 int chunk = audio_MIN (to_grab, hw->samples - wpos);
332 void *buf = advance (pa->pcm_buf, wpos);
333
334 if (qpa_simple_read (pa, buf,
335 chunk << hw->info.shift, &error) < 0) {
336 qpa_logerr (error, "pa_simple_read failed\n");
337 return NULL;
338 }
339
340 hw->conv (hw->conv_buf + wpos, buf, chunk);
341 wpos = (wpos + chunk) % hw->samples;
342 to_grab -= chunk;
343 }
344
345 if (audio_pt_lock(&pa->pt, __func__)) {
346 return NULL;
347 }
348
349 pa->wpos = wpos;
350 pa->dead -= incr;
351 pa->incr += incr;
352 }
353
354 exit:
355 audio_pt_unlock(&pa->pt, __func__);
356 return NULL;
357}
358
359static int qpa_run_in (HWVoiceIn *hw)
360{
361 int live, incr, dead;
362 PAVoiceIn *pa = (PAVoiceIn *) hw;
363
364 if (audio_pt_lock(&pa->pt, __func__)) {
365 return 0;
366 }
367
368 live = audio_pcm_hw_get_live_in (hw);
369 dead = hw->samples - live;
370 incr = audio_MIN (dead, pa->incr);
371 pa->incr -= incr;
372 pa->dead = dead - incr;
373 hw->wpos = pa->wpos;
374 if (pa->dead > 0) {
375 audio_pt_unlock_and_signal(&pa->pt, __func__);
376 }
377 else {
378 audio_pt_unlock(&pa->pt, __func__);
379 }
380 return incr;
381}
382
383static int qpa_read (SWVoiceIn *sw, void *buf, int len)
384{
385 return audio_pcm_sw_read (sw, buf, len);
386}
387
388static pa_sample_format_t audfmt_to_pa (audfmt_e afmt, int endianness)
389{
390 int format;
391
392 switch (afmt) {
393 case AUD_FMT_S8:
394 case AUD_FMT_U8:
395 format = PA_SAMPLE_U8;
396 break;
397 case AUD_FMT_S16:
398 case AUD_FMT_U16:
399 format = endianness ? PA_SAMPLE_S16BE : PA_SAMPLE_S16LE;
400 break;
401 case AUD_FMT_S32:
402 case AUD_FMT_U32:
403 format = endianness ? PA_SAMPLE_S32BE : PA_SAMPLE_S32LE;
404 break;
405 default:
406 dolog ("Internal logic error: Bad audio format %d\n", afmt);
407 format = PA_SAMPLE_U8;
408 break;
409 }
410 return format;
411}
412
413static audfmt_e pa_to_audfmt (pa_sample_format_t fmt, int *endianness)
414{
415 switch (fmt) {
416 case PA_SAMPLE_U8:
417 return AUD_FMT_U8;
418 case PA_SAMPLE_S16BE:
419 *endianness = 1;
420 return AUD_FMT_S16;
421 case PA_SAMPLE_S16LE:
422 *endianness = 0;
423 return AUD_FMT_S16;
424 case PA_SAMPLE_S32BE:
425 *endianness = 1;
426 return AUD_FMT_S32;
427 case PA_SAMPLE_S32LE:
428 *endianness = 0;
429 return AUD_FMT_S32;
430 default:
431 dolog ("Internal logic error: Bad pa_sample_format %d\n", fmt);
432 return AUD_FMT_U8;
433 }
434}
435
436static void context_state_cb (pa_context *c, void *userdata)
437{
438 paaudio *g = userdata;
439
440 switch (pa_context_get_state(c)) {
441 case PA_CONTEXT_READY:
442 case PA_CONTEXT_TERMINATED:
443 case PA_CONTEXT_FAILED:
444 pa_threaded_mainloop_signal (g->mainloop, 0);
445 break;
446
447 case PA_CONTEXT_UNCONNECTED:
448 case PA_CONTEXT_CONNECTING:
449 case PA_CONTEXT_AUTHORIZING:
450 case PA_CONTEXT_SETTING_NAME:
451 break;
452 }
453}
454
455static void stream_state_cb (pa_stream *s, void * userdata)
456{
457 paaudio *g = userdata;
458
459 switch (pa_stream_get_state (s)) {
460
461 case PA_STREAM_READY:
462 case PA_STREAM_FAILED:
463 case PA_STREAM_TERMINATED:
464 pa_threaded_mainloop_signal (g->mainloop, 0);
465 break;
466
467 case PA_STREAM_UNCONNECTED:
468 case PA_STREAM_CREATING:
469 break;
470 }
471}
472
473static void stream_request_cb (pa_stream *s, size_t length, void *userdata)
474{
475 paaudio *g = userdata;
476
477 pa_threaded_mainloop_signal (g->mainloop, 0);
478}
479
480static pa_stream *qpa_simple_new (
481 paaudio *g,
482 const char *name,
483 pa_stream_direction_t dir,
484 const char *dev,
485 const pa_sample_spec *ss,
486 const pa_channel_map *map,
487 const pa_buffer_attr *attr,
488 int *rerror)
489{
490 int r;
491 pa_stream *stream;
492
493 pa_threaded_mainloop_lock (g->mainloop);
494
495 stream = pa_stream_new (g->context, name, ss, map);
496 if (!stream) {
497 goto fail;
498 }
499
500 pa_stream_set_state_callback (stream, stream_state_cb, g);
501 pa_stream_set_read_callback (stream, stream_request_cb, g);
502 pa_stream_set_write_callback (stream, stream_request_cb, g);
503
504 if (dir == PA_STREAM_PLAYBACK) {
505 r = pa_stream_connect_playback (stream, dev, attr,
506 PA_STREAM_INTERPOLATE_TIMING
507#ifdef PA_STREAM_ADJUST_LATENCY
508 |PA_STREAM_ADJUST_LATENCY
509#endif
510 |PA_STREAM_AUTO_TIMING_UPDATE, NULL, NULL);
511 } else {
512 r = pa_stream_connect_record (stream, dev, attr,
513 PA_STREAM_INTERPOLATE_TIMING
514#ifdef PA_STREAM_ADJUST_LATENCY
515 |PA_STREAM_ADJUST_LATENCY
516#endif
517 |PA_STREAM_AUTO_TIMING_UPDATE);
518 }
519
520 if (r < 0) {
521 goto fail;
522 }
523
524 pa_threaded_mainloop_unlock (g->mainloop);
525
526 return stream;
527
528fail:
529 pa_threaded_mainloop_unlock (g->mainloop);
530
531 if (stream) {
532 pa_stream_unref (stream);
533 }
534
535 *rerror = pa_context_errno (g->context);
536
537 return NULL;
538}
539
540static int qpa_init_out(HWVoiceOut *hw, struct audsettings *as,
541 void *drv_opaque)
542{
543 int error;
544 pa_sample_spec ss;
545 pa_buffer_attr ba;
546 struct audsettings obt_as = *as;
547 PAVoiceOut *pa = (PAVoiceOut *) hw;
548 paaudio *g = pa->g = drv_opaque;
549
550 ss.format = audfmt_to_pa (as->fmt, as->endianness);
551 ss.channels = as->nchannels;
552 ss.rate = as->freq;
553
554
555
556
557
558 ba.tlength = pa_usec_to_bytes (10 * 1000, &ss);
559 ba.minreq = pa_usec_to_bytes (5 * 1000, &ss);
560 ba.maxlength = -1;
561 ba.prebuf = -1;
562
563 obt_as.fmt = pa_to_audfmt (ss.format, &obt_as.endianness);
564
565 pa->stream = qpa_simple_new (
566 g,
567 "qemu",
568 PA_STREAM_PLAYBACK,
569 g->conf.sink,
570 &ss,
571 NULL,
572 &ba,
573 &error
574 );
575 if (!pa->stream) {
576 qpa_logerr (error, "pa_simple_new for playback failed\n");
577 goto fail1;
578 }
579
580 audio_pcm_init_info (&hw->info, &obt_as);
581 hw->samples = g->conf.samples;
582 pa->pcm_buf = audio_calloc(__func__, hw->samples, 1 << hw->info.shift);
583 pa->rpos = hw->rpos;
584 if (!pa->pcm_buf) {
585 dolog ("Could not allocate buffer (%d bytes)\n",
586 hw->samples << hw->info.shift);
587 goto fail2;
588 }
589
590 if (audio_pt_init(&pa->pt, qpa_thread_out, hw, AUDIO_CAP, __func__)) {
591 goto fail3;
592 }
593
594 return 0;
595
596 fail3:
597 g_free (pa->pcm_buf);
598 pa->pcm_buf = NULL;
599 fail2:
600 if (pa->stream) {
601 pa_stream_unref (pa->stream);
602 pa->stream = NULL;
603 }
604 fail1:
605 return -1;
606}
607
608static int qpa_init_in(HWVoiceIn *hw, struct audsettings *as, void *drv_opaque)
609{
610 int error;
611 pa_sample_spec ss;
612 struct audsettings obt_as = *as;
613 PAVoiceIn *pa = (PAVoiceIn *) hw;
614 paaudio *g = pa->g = drv_opaque;
615
616 ss.format = audfmt_to_pa (as->fmt, as->endianness);
617 ss.channels = as->nchannels;
618 ss.rate = as->freq;
619
620 obt_as.fmt = pa_to_audfmt (ss.format, &obt_as.endianness);
621
622 pa->stream = qpa_simple_new (
623 g,
624 "qemu",
625 PA_STREAM_RECORD,
626 g->conf.source,
627 &ss,
628 NULL,
629 NULL,
630 &error
631 );
632 if (!pa->stream) {
633 qpa_logerr (error, "pa_simple_new for capture failed\n");
634 goto fail1;
635 }
636
637 audio_pcm_init_info (&hw->info, &obt_as);
638 hw->samples = g->conf.samples;
639 pa->pcm_buf = audio_calloc(__func__, hw->samples, 1 << hw->info.shift);
640 pa->wpos = hw->wpos;
641 if (!pa->pcm_buf) {
642 dolog ("Could not allocate buffer (%d bytes)\n",
643 hw->samples << hw->info.shift);
644 goto fail2;
645 }
646
647 if (audio_pt_init(&pa->pt, qpa_thread_in, hw, AUDIO_CAP, __func__)) {
648 goto fail3;
649 }
650
651 return 0;
652
653 fail3:
654 g_free (pa->pcm_buf);
655 pa->pcm_buf = NULL;
656 fail2:
657 if (pa->stream) {
658 pa_stream_unref (pa->stream);
659 pa->stream = NULL;
660 }
661 fail1:
662 return -1;
663}
664
665static void qpa_fini_out (HWVoiceOut *hw)
666{
667 void *ret;
668 PAVoiceOut *pa = (PAVoiceOut *) hw;
669
670 audio_pt_lock(&pa->pt, __func__);
671 pa->done = 1;
672 audio_pt_unlock_and_signal(&pa->pt, __func__);
673 audio_pt_join(&pa->pt, &ret, __func__);
674
675 if (pa->stream) {
676 pa_stream_unref (pa->stream);
677 pa->stream = NULL;
678 }
679
680 audio_pt_fini(&pa->pt, __func__);
681 g_free (pa->pcm_buf);
682 pa->pcm_buf = NULL;
683}
684
685static void qpa_fini_in (HWVoiceIn *hw)
686{
687 void *ret;
688 PAVoiceIn *pa = (PAVoiceIn *) hw;
689
690 audio_pt_lock(&pa->pt, __func__);
691 pa->done = 1;
692 audio_pt_unlock_and_signal(&pa->pt, __func__);
693 audio_pt_join(&pa->pt, &ret, __func__);
694
695 if (pa->stream) {
696 pa_stream_unref (pa->stream);
697 pa->stream = NULL;
698 }
699
700 audio_pt_fini(&pa->pt, __func__);
701 g_free (pa->pcm_buf);
702 pa->pcm_buf = NULL;
703}
704
705static int qpa_ctl_out (HWVoiceOut *hw, int cmd, ...)
706{
707 PAVoiceOut *pa = (PAVoiceOut *) hw;
708 pa_operation *op;
709 pa_cvolume v;
710 paaudio *g = pa->g;
711
712#ifdef PA_CHECK_VERSION
713 pa_cvolume_init (&v);
714#endif
715
716 switch (cmd) {
717 case VOICE_VOLUME:
718 {
719 SWVoiceOut *sw;
720 va_list ap;
721
722 va_start (ap, cmd);
723 sw = va_arg (ap, SWVoiceOut *);
724 va_end (ap);
725
726 v.channels = 2;
727 v.values[0] = ((PA_VOLUME_NORM - PA_VOLUME_MUTED) * sw->vol.l) / UINT32_MAX;
728 v.values[1] = ((PA_VOLUME_NORM - PA_VOLUME_MUTED) * sw->vol.r) / UINT32_MAX;
729
730 pa_threaded_mainloop_lock (g->mainloop);
731
732 op = pa_context_set_sink_input_volume (g->context,
733 pa_stream_get_index (pa->stream),
734 &v, NULL, NULL);
735 if (!op)
736 qpa_logerr (pa_context_errno (g->context),
737 "set_sink_input_volume() failed\n");
738 else
739 pa_operation_unref (op);
740
741 op = pa_context_set_sink_input_mute (g->context,
742 pa_stream_get_index (pa->stream),
743 sw->vol.mute, NULL, NULL);
744 if (!op) {
745 qpa_logerr (pa_context_errno (g->context),
746 "set_sink_input_mute() failed\n");
747 } else {
748 pa_operation_unref (op);
749 }
750
751 pa_threaded_mainloop_unlock (g->mainloop);
752 }
753 }
754 return 0;
755}
756
757static int qpa_ctl_in (HWVoiceIn *hw, int cmd, ...)
758{
759 PAVoiceIn *pa = (PAVoiceIn *) hw;
760 pa_operation *op;
761 pa_cvolume v;
762 paaudio *g = pa->g;
763
764#ifdef PA_CHECK_VERSION
765 pa_cvolume_init (&v);
766#endif
767
768 switch (cmd) {
769 case VOICE_VOLUME:
770 {
771 SWVoiceIn *sw;
772 va_list ap;
773
774 va_start (ap, cmd);
775 sw = va_arg (ap, SWVoiceIn *);
776 va_end (ap);
777
778 v.channels = 2;
779 v.values[0] = ((PA_VOLUME_NORM - PA_VOLUME_MUTED) * sw->vol.l) / UINT32_MAX;
780 v.values[1] = ((PA_VOLUME_NORM - PA_VOLUME_MUTED) * sw->vol.r) / UINT32_MAX;
781
782 pa_threaded_mainloop_lock (g->mainloop);
783
784 op = pa_context_set_source_output_volume (g->context,
785 pa_stream_get_index (pa->stream),
786 &v, NULL, NULL);
787 if (!op) {
788 qpa_logerr (pa_context_errno (g->context),
789 "set_source_output_volume() failed\n");
790 } else {
791 pa_operation_unref(op);
792 }
793
794 op = pa_context_set_source_output_mute (g->context,
795 pa_stream_get_index (pa->stream),
796 sw->vol.mute, NULL, NULL);
797 if (!op) {
798 qpa_logerr (pa_context_errno (g->context),
799 "set_source_output_mute() failed\n");
800 } else {
801 pa_operation_unref (op);
802 }
803
804 pa_threaded_mainloop_unlock (g->mainloop);
805 }
806 }
807 return 0;
808}
809
810
811static PAConf glob_conf = {
812 .samples = 4096,
813};
814
815static void *qpa_audio_init (void)
816{
817 paaudio *g = g_malloc(sizeof(paaudio));
818 g->conf = glob_conf;
819 g->mainloop = NULL;
820 g->context = NULL;
821
822 g->mainloop = pa_threaded_mainloop_new ();
823 if (!g->mainloop) {
824 goto fail;
825 }
826
827 g->context = pa_context_new (pa_threaded_mainloop_get_api (g->mainloop),
828 g->conf.server);
829 if (!g->context) {
830 goto fail;
831 }
832
833 pa_context_set_state_callback (g->context, context_state_cb, g);
834
835 if (pa_context_connect (g->context, g->conf.server, 0, NULL) < 0) {
836 qpa_logerr (pa_context_errno (g->context),
837 "pa_context_connect() failed\n");
838 goto fail;
839 }
840
841 pa_threaded_mainloop_lock (g->mainloop);
842
843 if (pa_threaded_mainloop_start (g->mainloop) < 0) {
844 goto unlock_and_fail;
845 }
846
847 for (;;) {
848 pa_context_state_t state;
849
850 state = pa_context_get_state (g->context);
851
852 if (state == PA_CONTEXT_READY) {
853 break;
854 }
855
856 if (!PA_CONTEXT_IS_GOOD (state)) {
857 qpa_logerr (pa_context_errno (g->context),
858 "Wrong context state\n");
859 goto unlock_and_fail;
860 }
861
862
863 pa_threaded_mainloop_wait (g->mainloop);
864 }
865
866 pa_threaded_mainloop_unlock (g->mainloop);
867
868 return g;
869
870unlock_and_fail:
871 pa_threaded_mainloop_unlock (g->mainloop);
872fail:
873 AUD_log (AUDIO_CAP, "Failed to initialize PA context");
874 qpa_audio_fini(g);
875 return NULL;
876}
877
878static void qpa_audio_fini (void *opaque)
879{
880 paaudio *g = opaque;
881
882 if (g->mainloop) {
883 pa_threaded_mainloop_stop (g->mainloop);
884 }
885
886 if (g->context) {
887 pa_context_disconnect (g->context);
888 pa_context_unref (g->context);
889 }
890
891 if (g->mainloop) {
892 pa_threaded_mainloop_free (g->mainloop);
893 }
894
895 g_free(g);
896}
897
898struct audio_option qpa_options[] = {
899 {
900 .name = "SAMPLES",
901 .tag = AUD_OPT_INT,
902 .valp = &glob_conf.samples,
903 .descr = "buffer size in samples"
904 },
905 {
906 .name = "SERVER",
907 .tag = AUD_OPT_STR,
908 .valp = &glob_conf.server,
909 .descr = "server address"
910 },
911 {
912 .name = "SINK",
913 .tag = AUD_OPT_STR,
914 .valp = &glob_conf.sink,
915 .descr = "sink device name"
916 },
917 {
918 .name = "SOURCE",
919 .tag = AUD_OPT_STR,
920 .valp = &glob_conf.source,
921 .descr = "source device name"
922 },
923 { }
924};
925
926static struct audio_pcm_ops qpa_pcm_ops = {
927 .init_out = qpa_init_out,
928 .fini_out = qpa_fini_out,
929 .run_out = qpa_run_out,
930 .write = qpa_write,
931 .ctl_out = qpa_ctl_out,
932
933 .init_in = qpa_init_in,
934 .fini_in = qpa_fini_in,
935 .run_in = qpa_run_in,
936 .read = qpa_read,
937 .ctl_in = qpa_ctl_in
938};
939
940static struct audio_driver pa_audio_driver = {
941 .name = "pa",
942 .descr = "http://www.pulseaudio.org/",
943 .options = qpa_options,
944 .init = qpa_audio_init,
945 .fini = qpa_audio_fini,
946 .pcm_ops = &qpa_pcm_ops,
947 .can_be_default = 1,
948 .max_voices_out = INT_MAX,
949 .max_voices_in = INT_MAX,
950 .voice_size_out = sizeof (PAVoiceOut),
951 .voice_size_in = sizeof (PAVoiceIn),
952 .ctl_caps = VOICE_VOLUME_CAP
953};
954
955static void register_audio_pa(void)
956{
957 audio_driver_register(&pa_audio_driver);
958}
959type_init(register_audio_pa);
960
