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Merge branch 'master' of git://0pointer.de/pulseaudio
[pulseaudio] / src / modules / alsa / alsa-mixer.c
1 /***
2 This file is part of PulseAudio.
3
4 Copyright 2004-2009 Lennart Poettering
5 Copyright 2006 Pierre Ossman <ossman@cendio.se> for Cendio AB
6
7 PulseAudio is free software; you can redistribute it and/or modify
8 it under the terms of the GNU Lesser General Public License as published
9 by the Free Software Foundation; either version 2.1 of the License,
10 or (at your option) any later version.
11
12 PulseAudio is distributed in the hope that it will be useful, but
13 WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 General Public License for more details.
16
17 You should have received a copy of the GNU Lesser General Public License
18 along with PulseAudio; if not, write to the Free Software
19 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
20 USA.
21 ***/
22
23 #ifdef HAVE_CONFIG_H
24 #include <config.h>
25 #endif
26
27 #include <sys/types.h>
28 #include <limits.h>
29 #include <asoundlib.h>
30
31 #ifdef HAVE_VALGRIND_MEMCHECK_H
32 #include <valgrind/memcheck.h>
33 #endif
34
35 #include <pulse/sample.h>
36 #include <pulse/xmalloc.h>
37 #include <pulse/timeval.h>
38 #include <pulse/util.h>
39 #include <pulse/i18n.h>
40 #include <pulse/utf8.h>
41
42 #include <pulsecore/log.h>
43 #include <pulsecore/macro.h>
44 #include <pulsecore/core-util.h>
45 #include <pulsecore/atomic.h>
46 #include <pulsecore/core-error.h>
47 #include <pulsecore/once.h>
48 #include <pulsecore/thread.h>
49 #include <pulsecore/conf-parser.h>
50 #include <pulsecore/strbuf.h>
51
52 #include "alsa-mixer.h"
53 #include "alsa-util.h"
54
55 struct description_map {
56 const char *name;
57 const char *description;
58 };
59
60 static const char *lookup_description(const char *name, const struct description_map dm[], unsigned n) {
61 unsigned i;
62
63 for (i = 0; i < n; i++)
64 if (pa_streq(dm[i].name, name))
65 return dm[i].description;
66
67 return NULL;
68 }
69
70 struct pa_alsa_fdlist {
71 unsigned num_fds;
72 struct pollfd *fds;
73 /* This is a temporary buffer used to avoid lots of mallocs */
74 struct pollfd *work_fds;
75
76 snd_mixer_t *mixer;
77
78 pa_mainloop_api *m;
79 pa_defer_event *defer;
80 pa_io_event **ios;
81
82 pa_bool_t polled;
83
84 void (*cb)(void *userdata);
85 void *userdata;
86 };
87
88 static void io_cb(pa_mainloop_api*a, pa_io_event* e, int fd, pa_io_event_flags_t events, void *userdata) {
89
90 struct pa_alsa_fdlist *fdl = userdata;
91 int err;
92 unsigned i;
93 unsigned short revents;
94
95 pa_assert(a);
96 pa_assert(fdl);
97 pa_assert(fdl->mixer);
98 pa_assert(fdl->fds);
99 pa_assert(fdl->work_fds);
100
101 if (fdl->polled)
102 return;
103
104 fdl->polled = TRUE;
105
106 memcpy(fdl->work_fds, fdl->fds, sizeof(struct pollfd) * fdl->num_fds);
107
108 for (i = 0; i < fdl->num_fds; i++) {
109 if (e == fdl->ios[i]) {
110 if (events & PA_IO_EVENT_INPUT)
111 fdl->work_fds[i].revents |= POLLIN;
112 if (events & PA_IO_EVENT_OUTPUT)
113 fdl->work_fds[i].revents |= POLLOUT;
114 if (events & PA_IO_EVENT_ERROR)
115 fdl->work_fds[i].revents |= POLLERR;
116 if (events & PA_IO_EVENT_HANGUP)
117 fdl->work_fds[i].revents |= POLLHUP;
118 break;
119 }
120 }
121
122 pa_assert(i != fdl->num_fds);
123
124 if ((err = snd_mixer_poll_descriptors_revents(fdl->mixer, fdl->work_fds, fdl->num_fds, &revents)) < 0) {
125 pa_log_error("Unable to get poll revent: %s", pa_alsa_strerror(err));
126 return;
127 }
128
129 a->defer_enable(fdl->defer, 1);
130
131 if (revents)
132 snd_mixer_handle_events(fdl->mixer);
133 }
134
135 static void defer_cb(pa_mainloop_api*a, pa_defer_event* e, void *userdata) {
136 struct pa_alsa_fdlist *fdl = userdata;
137 unsigned num_fds, i;
138 int err, n;
139 struct pollfd *temp;
140
141 pa_assert(a);
142 pa_assert(fdl);
143 pa_assert(fdl->mixer);
144
145 a->defer_enable(fdl->defer, 0);
146
147 if ((n = snd_mixer_poll_descriptors_count(fdl->mixer)) < 0) {
148 pa_log("snd_mixer_poll_descriptors_count() failed: %s", pa_alsa_strerror(n));
149 return;
150 }
151 num_fds = (unsigned) n;
152
153 if (num_fds != fdl->num_fds) {
154 if (fdl->fds)
155 pa_xfree(fdl->fds);
156 if (fdl->work_fds)
157 pa_xfree(fdl->work_fds);
158 fdl->fds = pa_xnew0(struct pollfd, num_fds);
159 fdl->work_fds = pa_xnew(struct pollfd, num_fds);
160 }
161
162 memset(fdl->work_fds, 0, sizeof(struct pollfd) * num_fds);
163
164 if ((err = snd_mixer_poll_descriptors(fdl->mixer, fdl->work_fds, num_fds)) < 0) {
165 pa_log_error("Unable to get poll descriptors: %s", pa_alsa_strerror(err));
166 return;
167 }
168
169 fdl->polled = FALSE;
170
171 if (memcmp(fdl->fds, fdl->work_fds, sizeof(struct pollfd) * num_fds) == 0)
172 return;
173
174 if (fdl->ios) {
175 for (i = 0; i < fdl->num_fds; i++)
176 a->io_free(fdl->ios[i]);
177
178 if (num_fds != fdl->num_fds) {
179 pa_xfree(fdl->ios);
180 fdl->ios = NULL;
181 }
182 }
183
184 if (!fdl->ios)
185 fdl->ios = pa_xnew(pa_io_event*, num_fds);
186
187 /* Swap pointers */
188 temp = fdl->work_fds;
189 fdl->work_fds = fdl->fds;
190 fdl->fds = temp;
191
192 fdl->num_fds = num_fds;
193
194 for (i = 0;i < num_fds;i++)
195 fdl->ios[i] = a->io_new(a, fdl->fds[i].fd,
196 ((fdl->fds[i].events & POLLIN) ? PA_IO_EVENT_INPUT : 0) |
197 ((fdl->fds[i].events & POLLOUT) ? PA_IO_EVENT_OUTPUT : 0),
198 io_cb, fdl);
199 }
200
201 struct pa_alsa_fdlist *pa_alsa_fdlist_new(void) {
202 struct pa_alsa_fdlist *fdl;
203
204 fdl = pa_xnew0(struct pa_alsa_fdlist, 1);
205
206 return fdl;
207 }
208
209 void pa_alsa_fdlist_free(struct pa_alsa_fdlist *fdl) {
210 pa_assert(fdl);
211
212 if (fdl->defer) {
213 pa_assert(fdl->m);
214 fdl->m->defer_free(fdl->defer);
215 }
216
217 if (fdl->ios) {
218 unsigned i;
219 pa_assert(fdl->m);
220 for (i = 0; i < fdl->num_fds; i++)
221 fdl->m->io_free(fdl->ios[i]);
222 pa_xfree(fdl->ios);
223 }
224
225 if (fdl->fds)
226 pa_xfree(fdl->fds);
227 if (fdl->work_fds)
228 pa_xfree(fdl->work_fds);
229
230 pa_xfree(fdl);
231 }
232
233 int pa_alsa_fdlist_set_mixer(struct pa_alsa_fdlist *fdl, snd_mixer_t *mixer_handle, pa_mainloop_api* m) {
234 pa_assert(fdl);
235 pa_assert(mixer_handle);
236 pa_assert(m);
237 pa_assert(!fdl->m);
238
239 fdl->mixer = mixer_handle;
240 fdl->m = m;
241 fdl->defer = m->defer_new(m, defer_cb, fdl);
242
243 return 0;
244 }
245
246 static int prepare_mixer(snd_mixer_t *mixer, const char *dev) {
247 int err;
248
249 pa_assert(mixer);
250 pa_assert(dev);
251
252 if ((err = snd_mixer_attach(mixer, dev)) < 0) {
253 pa_log_info("Unable to attach to mixer %s: %s", dev, pa_alsa_strerror(err));
254 return -1;
255 }
256
257 if ((err = snd_mixer_selem_register(mixer, NULL, NULL)) < 0) {
258 pa_log_warn("Unable to register mixer: %s", pa_alsa_strerror(err));
259 return -1;
260 }
261
262 if ((err = snd_mixer_load(mixer)) < 0) {
263 pa_log_warn("Unable to load mixer: %s", pa_alsa_strerror(err));
264 return -1;
265 }
266
267 pa_log_info("Successfully attached to mixer '%s'", dev);
268 return 0;
269 }
270
271 snd_mixer_t *pa_alsa_open_mixer_for_pcm(snd_pcm_t *pcm, char **ctl_device) {
272 int err;
273 snd_mixer_t *m;
274 const char *dev;
275 snd_pcm_info_t* info;
276 snd_pcm_info_alloca(&info);
277
278 pa_assert(pcm);
279
280 if ((err = snd_mixer_open(&m, 0)) < 0) {
281 pa_log("Error opening mixer: %s", pa_alsa_strerror(err));
282 return NULL;
283 }
284
285 /* First, try by name */
286 if ((dev = snd_pcm_name(pcm)))
287 if (prepare_mixer(m, dev) >= 0) {
288 if (ctl_device)
289 *ctl_device = pa_xstrdup(dev);
290
291 return m;
292 }
293
294 /* Then, try by card index */
295 if (snd_pcm_info(pcm, info) >= 0) {
296 char *md;
297 int card_idx;
298
299 if ((card_idx = snd_pcm_info_get_card(info)) >= 0) {
300
301 md = pa_sprintf_malloc("hw:%i", card_idx);
302
303 if (!dev || !pa_streq(dev, md))
304 if (prepare_mixer(m, md) >= 0) {
305
306 if (ctl_device)
307 *ctl_device = md;
308 else
309 pa_xfree(md);
310
311 return m;
312 }
313
314 pa_xfree(md);
315 }
316 }
317
318 snd_mixer_close(m);
319 return NULL;
320 }
321
322 static const snd_mixer_selem_channel_id_t alsa_channel_ids[PA_CHANNEL_POSITION_MAX] = {
323 [PA_CHANNEL_POSITION_MONO] = SND_MIXER_SCHN_MONO, /* The ALSA name is just an alias! */
324
325 [PA_CHANNEL_POSITION_FRONT_CENTER] = SND_MIXER_SCHN_FRONT_CENTER,
326 [PA_CHANNEL_POSITION_FRONT_LEFT] = SND_MIXER_SCHN_FRONT_LEFT,
327 [PA_CHANNEL_POSITION_FRONT_RIGHT] = SND_MIXER_SCHN_FRONT_RIGHT,
328
329 [PA_CHANNEL_POSITION_REAR_CENTER] = SND_MIXER_SCHN_REAR_CENTER,
330 [PA_CHANNEL_POSITION_REAR_LEFT] = SND_MIXER_SCHN_REAR_LEFT,
331 [PA_CHANNEL_POSITION_REAR_RIGHT] = SND_MIXER_SCHN_REAR_RIGHT,
332
333 [PA_CHANNEL_POSITION_LFE] = SND_MIXER_SCHN_WOOFER,
334
335 [PA_CHANNEL_POSITION_FRONT_LEFT_OF_CENTER] = SND_MIXER_SCHN_UNKNOWN,
336 [PA_CHANNEL_POSITION_FRONT_RIGHT_OF_CENTER] = SND_MIXER_SCHN_UNKNOWN,
337
338 [PA_CHANNEL_POSITION_SIDE_LEFT] = SND_MIXER_SCHN_SIDE_LEFT,
339 [PA_CHANNEL_POSITION_SIDE_RIGHT] = SND_MIXER_SCHN_SIDE_RIGHT,
340
341 [PA_CHANNEL_POSITION_AUX0] = SND_MIXER_SCHN_UNKNOWN,
342 [PA_CHANNEL_POSITION_AUX1] = SND_MIXER_SCHN_UNKNOWN,
343 [PA_CHANNEL_POSITION_AUX2] = SND_MIXER_SCHN_UNKNOWN,
344 [PA_CHANNEL_POSITION_AUX3] = SND_MIXER_SCHN_UNKNOWN,
345 [PA_CHANNEL_POSITION_AUX4] = SND_MIXER_SCHN_UNKNOWN,
346 [PA_CHANNEL_POSITION_AUX5] = SND_MIXER_SCHN_UNKNOWN,
347 [PA_CHANNEL_POSITION_AUX6] = SND_MIXER_SCHN_UNKNOWN,
348 [PA_CHANNEL_POSITION_AUX7] = SND_MIXER_SCHN_UNKNOWN,
349 [PA_CHANNEL_POSITION_AUX8] = SND_MIXER_SCHN_UNKNOWN,
350 [PA_CHANNEL_POSITION_AUX9] = SND_MIXER_SCHN_UNKNOWN,
351 [PA_CHANNEL_POSITION_AUX10] = SND_MIXER_SCHN_UNKNOWN,
352 [PA_CHANNEL_POSITION_AUX11] = SND_MIXER_SCHN_UNKNOWN,
353 [PA_CHANNEL_POSITION_AUX12] = SND_MIXER_SCHN_UNKNOWN,
354 [PA_CHANNEL_POSITION_AUX13] = SND_MIXER_SCHN_UNKNOWN,
355 [PA_CHANNEL_POSITION_AUX14] = SND_MIXER_SCHN_UNKNOWN,
356 [PA_CHANNEL_POSITION_AUX15] = SND_MIXER_SCHN_UNKNOWN,
357 [PA_CHANNEL_POSITION_AUX16] = SND_MIXER_SCHN_UNKNOWN,
358 [PA_CHANNEL_POSITION_AUX17] = SND_MIXER_SCHN_UNKNOWN,
359 [PA_CHANNEL_POSITION_AUX18] = SND_MIXER_SCHN_UNKNOWN,
360 [PA_CHANNEL_POSITION_AUX19] = SND_MIXER_SCHN_UNKNOWN,
361 [PA_CHANNEL_POSITION_AUX20] = SND_MIXER_SCHN_UNKNOWN,
362 [PA_CHANNEL_POSITION_AUX21] = SND_MIXER_SCHN_UNKNOWN,
363 [PA_CHANNEL_POSITION_AUX22] = SND_MIXER_SCHN_UNKNOWN,
364 [PA_CHANNEL_POSITION_AUX23] = SND_MIXER_SCHN_UNKNOWN,
365 [PA_CHANNEL_POSITION_AUX24] = SND_MIXER_SCHN_UNKNOWN,
366 [PA_CHANNEL_POSITION_AUX25] = SND_MIXER_SCHN_UNKNOWN,
367 [PA_CHANNEL_POSITION_AUX26] = SND_MIXER_SCHN_UNKNOWN,
368 [PA_CHANNEL_POSITION_AUX27] = SND_MIXER_SCHN_UNKNOWN,
369 [PA_CHANNEL_POSITION_AUX28] = SND_MIXER_SCHN_UNKNOWN,
370 [PA_CHANNEL_POSITION_AUX29] = SND_MIXER_SCHN_UNKNOWN,
371 [PA_CHANNEL_POSITION_AUX30] = SND_MIXER_SCHN_UNKNOWN,
372 [PA_CHANNEL_POSITION_AUX31] = SND_MIXER_SCHN_UNKNOWN,
373
374 [PA_CHANNEL_POSITION_TOP_CENTER] = SND_MIXER_SCHN_UNKNOWN,
375
376 [PA_CHANNEL_POSITION_TOP_FRONT_CENTER] = SND_MIXER_SCHN_UNKNOWN,
377 [PA_CHANNEL_POSITION_TOP_FRONT_LEFT] = SND_MIXER_SCHN_UNKNOWN,
378 [PA_CHANNEL_POSITION_TOP_FRONT_RIGHT] = SND_MIXER_SCHN_UNKNOWN,
379
380 [PA_CHANNEL_POSITION_TOP_REAR_CENTER] = SND_MIXER_SCHN_UNKNOWN,
381 [PA_CHANNEL_POSITION_TOP_REAR_LEFT] = SND_MIXER_SCHN_UNKNOWN,
382 [PA_CHANNEL_POSITION_TOP_REAR_RIGHT] = SND_MIXER_SCHN_UNKNOWN
383 };
384
385 static void setting_free(pa_alsa_setting *s) {
386 pa_assert(s);
387
388 if (s->options)
389 pa_idxset_free(s->options, NULL, NULL);
390
391 pa_xfree(s->name);
392 pa_xfree(s->description);
393 pa_xfree(s);
394 }
395
396 static void option_free(pa_alsa_option *o) {
397 pa_assert(o);
398
399 pa_xfree(o->alsa_name);
400 pa_xfree(o->name);
401 pa_xfree(o->description);
402 pa_xfree(o);
403 }
404
405 static void element_free(pa_alsa_element *e) {
406 pa_alsa_option *o;
407 pa_assert(e);
408
409 while ((o = e->options)) {
410 PA_LLIST_REMOVE(pa_alsa_option, e->options, o);
411 option_free(o);
412 }
413
414 pa_xfree(e->alsa_name);
415 pa_xfree(e);
416 }
417
418 void pa_alsa_path_free(pa_alsa_path *p) {
419 pa_alsa_element *e;
420 pa_alsa_setting *s;
421
422 pa_assert(p);
423
424 while ((e = p->elements)) {
425 PA_LLIST_REMOVE(pa_alsa_element, p->elements, e);
426 element_free(e);
427 }
428
429 while ((s = p->settings)) {
430 PA_LLIST_REMOVE(pa_alsa_setting, p->settings, s);
431 setting_free(s);
432 }
433
434 pa_xfree(p->name);
435 pa_xfree(p->description);
436 pa_xfree(p);
437 }
438
439 void pa_alsa_path_set_free(pa_alsa_path_set *ps) {
440 pa_alsa_path *p;
441 pa_assert(ps);
442
443 while ((p = ps->paths)) {
444 PA_LLIST_REMOVE(pa_alsa_path, ps->paths, p);
445 pa_alsa_path_free(p);
446 }
447
448 pa_xfree(ps);
449 }
450
451 static long to_alsa_dB(pa_volume_t v) {
452 return (long) (pa_sw_volume_to_dB(v) * 100.0);
453 }
454
455 static pa_volume_t from_alsa_dB(long v) {
456 return pa_sw_volume_from_dB((double) v / 100.0);
457 }
458
459 static long to_alsa_volume(pa_volume_t v, long min, long max) {
460 long w;
461
462 w = (long) round(((double) v * (double) (max - min)) / PA_VOLUME_NORM) + min;
463 return PA_CLAMP_UNLIKELY(w, min, max);
464 }
465
466 static pa_volume_t from_alsa_volume(long v, long min, long max) {
467 return (pa_volume_t) round(((double) (v - min) * PA_VOLUME_NORM) / (double) (max - min));
468 }
469
470 #define SELEM_INIT(sid, name) \
471 do { \
472 snd_mixer_selem_id_alloca(&(sid)); \
473 snd_mixer_selem_id_set_name((sid), (name)); \
474 snd_mixer_selem_id_set_index((sid), 0); \
475 } while(FALSE)
476
477 static int element_get_volume(pa_alsa_element *e, snd_mixer_t *m, const pa_channel_map *cm, pa_cvolume *v) {
478 snd_mixer_selem_id_t *sid;
479 snd_mixer_elem_t *me;
480 snd_mixer_selem_channel_id_t c;
481 pa_channel_position_mask_t mask = 0;
482 unsigned k;
483
484 pa_assert(m);
485 pa_assert(e);
486 pa_assert(cm);
487 pa_assert(v);
488
489 SELEM_INIT(sid, e->alsa_name);
490 if (!(me = snd_mixer_find_selem(m, sid))) {
491 pa_log_warn("Element %s seems to have disappeared.", e->alsa_name);
492 return -1;
493 }
494
495 pa_cvolume_mute(v, cm->channels);
496
497 /* We take the highest volume of all channels that match */
498
499 for (c = 0; c <= SND_MIXER_SCHN_LAST; c++) {
500 int r;
501 pa_volume_t f;
502
503 if (e->has_dB) {
504 long value = 0;
505
506 if (e->direction == PA_ALSA_DIRECTION_OUTPUT) {
507 if (snd_mixer_selem_has_playback_channel(me, c))
508 r = snd_mixer_selem_get_playback_dB(me, c, &value);
509 else
510 r = -1;
511 } else {
512 if (snd_mixer_selem_has_capture_channel(me, c))
513 r = snd_mixer_selem_get_capture_dB(me, c, &value);
514 else
515 r = -1;
516 }
517
518 if (r < 0)
519 continue;
520
521 #ifdef HAVE_VALGRIND_MEMCHECK_H
522 VALGRIND_MAKE_MEM_DEFINED(&value, sizeof(value));
523 #endif
524
525 f = from_alsa_dB(value);
526
527 } else {
528 long value = 0;
529
530 if (e->direction == PA_ALSA_DIRECTION_OUTPUT) {
531 if (snd_mixer_selem_has_playback_channel(me, c))
532 r = snd_mixer_selem_get_playback_volume(me, c, &value);
533 else
534 r = -1;
535 } else {
536 if (snd_mixer_selem_has_capture_channel(me, c))
537 r = snd_mixer_selem_get_capture_volume(me, c, &value);
538 else
539 r = -1;
540 }
541
542 if (r < 0)
543 continue;
544
545 f = from_alsa_volume(value, e->min_volume, e->max_volume);
546 }
547
548 for (k = 0; k < cm->channels; k++)
549 if (e->masks[c][e->n_channels-1] & PA_CHANNEL_POSITION_MASK(cm->map[k]))
550 if (v->values[k] < f)
551 v->values[k] = f;
552
553 mask |= e->masks[c][e->n_channels-1];
554 }
555
556 for (k = 0; k < cm->channels; k++)
557 if (!(mask & PA_CHANNEL_POSITION_MASK(cm->map[k])))
558 v->values[k] = PA_VOLUME_NORM;
559
560 return 0;
561 }
562
563 int pa_alsa_path_get_volume(pa_alsa_path *p, snd_mixer_t *m, const pa_channel_map *cm, pa_cvolume *v) {
564 pa_alsa_element *e;
565
566 pa_assert(m);
567 pa_assert(p);
568 pa_assert(cm);
569 pa_assert(v);
570
571 if (!p->has_volume)
572 return -1;
573
574 pa_cvolume_reset(v, cm->channels);
575
576 PA_LLIST_FOREACH(e, p->elements) {
577 pa_cvolume ev;
578
579 if (e->volume_use != PA_ALSA_VOLUME_MERGE)
580 continue;
581
582 pa_assert(!p->has_dB || e->has_dB);
583
584 if (element_get_volume(e, m, cm, &ev) < 0)
585 return -1;
586
587 /* If we have no dB information all we can do is take the first element and leave */
588 if (!p->has_dB) {
589 *v = ev;
590 return 0;
591 }
592
593 pa_sw_cvolume_multiply(v, v, &ev);
594 }
595
596 return 0;
597 }
598
599 static int element_get_switch(pa_alsa_element *e, snd_mixer_t *m, pa_bool_t *b) {
600 snd_mixer_selem_id_t *sid;
601 snd_mixer_elem_t *me;
602 snd_mixer_selem_channel_id_t c;
603
604 pa_assert(m);
605 pa_assert(e);
606 pa_assert(b);
607
608 SELEM_INIT(sid, e->alsa_name);
609 if (!(me = snd_mixer_find_selem(m, sid))) {
610 pa_log_warn("Element %s seems to have disappeared.", e->alsa_name);
611 return -1;
612 }
613
614 /* We return muted if at least one channel is muted */
615
616 for (c = 0; c <= SND_MIXER_SCHN_LAST; c++) {
617 int r;
618 int value = 0;
619
620 if (e->direction == PA_ALSA_DIRECTION_OUTPUT) {
621 if (snd_mixer_selem_has_playback_channel(me, c))
622 r = snd_mixer_selem_get_playback_switch(me, c, &value);
623 else
624 r = -1;
625 } else {
626 if (snd_mixer_selem_has_capture_channel(me, c))
627 r = snd_mixer_selem_get_capture_switch(me, c, &value);
628 else
629 r = -1;
630 }
631
632 if (r < 0)
633 continue;
634
635 if (!value) {
636 *b = FALSE;
637 return 0;
638 }
639 }
640
641 *b = TRUE;
642 return 0;
643 }
644
645 int pa_alsa_path_get_mute(pa_alsa_path *p, snd_mixer_t *m, pa_bool_t *muted) {
646 pa_alsa_element *e;
647
648 pa_assert(m);
649 pa_assert(p);
650 pa_assert(muted);
651
652 if (!p->has_mute)
653 return -1;
654
655 PA_LLIST_FOREACH(e, p->elements) {
656 pa_bool_t b;
657
658 if (e->switch_use != PA_ALSA_SWITCH_MUTE)
659 continue;
660
661 if (element_get_switch(e, m, &b) < 0)
662 return -1;
663
664 if (!b) {
665 *muted = TRUE;
666 return 0;
667 }
668 }
669
670 *muted = FALSE;
671 return 0;
672 }
673
674 static int element_set_volume(pa_alsa_element *e, snd_mixer_t *m, const pa_channel_map *cm, pa_cvolume *v) {
675 snd_mixer_selem_id_t *sid;
676 pa_cvolume rv;
677 snd_mixer_elem_t *me;
678 snd_mixer_selem_channel_id_t c;
679 pa_channel_position_mask_t mask = 0;
680 unsigned k;
681
682 pa_assert(m);
683 pa_assert(e);
684 pa_assert(cm);
685 pa_assert(v);
686 pa_assert(pa_cvolume_compatible_with_channel_map(v, cm));
687
688 SELEM_INIT(sid, e->alsa_name);
689 if (!(me = snd_mixer_find_selem(m, sid))) {
690 pa_log_warn("Element %s seems to have disappeared.", e->alsa_name);
691 return -1;
692 }
693
694 pa_cvolume_mute(&rv, cm->channels);
695
696 for (c = 0; c <= SND_MIXER_SCHN_LAST; c++) {
697 int r;
698 pa_volume_t f = PA_VOLUME_MUTED;
699 pa_bool_t found = FALSE;
700
701 for (k = 0; k < cm->channels; k++)
702 if (e->masks[c][e->n_channels-1] & PA_CHANNEL_POSITION_MASK(cm->map[k])) {
703 found = TRUE;
704 if (v->values[k] > f)
705 f = v->values[k];
706 }
707
708 if (!found) {
709 /* Hmm, so this channel does not exist in the volume
710 * struct, so let's bind it to the overall max of the
711 * volume. */
712 f = pa_cvolume_max(v);
713 }
714
715 if (e->has_dB) {
716 long value = to_alsa_dB(f);
717
718 if (e->direction == PA_ALSA_DIRECTION_OUTPUT) {
719 /* If we call set_play_volume() without checking first
720 * if the channel is available, ALSA behaves ver
721 * strangely and doesn't fail the call */
722 if (snd_mixer_selem_has_playback_channel(me, c)) {
723 if ((r = snd_mixer_selem_set_playback_dB(me, c, value, +1)) >= 0)
724 r = snd_mixer_selem_get_playback_dB(me, c, &value);
725 } else
726 r = -1;
727 } else {
728 if (snd_mixer_selem_has_capture_channel(me, c)) {
729 if ((r = snd_mixer_selem_set_capture_dB(me, c, value, +1)) >= 0)
730 r = snd_mixer_selem_get_capture_dB(me, c, &value);
731 } else
732 r = -1;
733 }
734
735 if (r < 0)
736 continue;
737
738 #ifdef HAVE_VALGRIND_MEMCHECK_H
739 VALGRIND_MAKE_MEM_DEFINED(&value, sizeof(value));
740 #endif
741
742 f = from_alsa_dB(value);
743
744 } else {
745 long value;
746
747 value = to_alsa_volume(f, e->min_volume, e->max_volume);
748
749 if (e->direction == PA_ALSA_DIRECTION_OUTPUT) {
750 if (snd_mixer_selem_has_playback_channel(me, c)) {
751 if ((r = snd_mixer_selem_set_playback_volume(me, c, value)) >= 0)
752 r = snd_mixer_selem_get_playback_volume(me, c, &value);
753 } else
754 r = -1;
755 } else {
756 if (snd_mixer_selem_has_capture_channel(me, c)) {
757 if ((r = snd_mixer_selem_set_capture_volume(me, c, value)) >= 0)
758 r = snd_mixer_selem_get_capture_volume(me, c, &value);
759 } else
760 r = -1;
761 }
762
763 if (r < 0)
764 continue;
765
766 f = from_alsa_volume(value, e->min_volume, e->max_volume);
767 }
768
769 for (k = 0; k < cm->channels; k++)
770 if (e->masks[c][e->n_channels-1] & PA_CHANNEL_POSITION_MASK(cm->map[k]))
771 if (rv.values[k] < f)
772 rv.values[k] = f;
773
774 mask |= e->masks[c][e->n_channels-1];
775 }
776
777 for (k = 0; k < cm->channels; k++)
778 if (!(mask & PA_CHANNEL_POSITION_MASK(cm->map[k])))
779 rv.values[k] = PA_VOLUME_NORM;
780
781 *v = rv;
782 return 0;
783 }
784
785 int pa_alsa_path_set_volume(pa_alsa_path *p, snd_mixer_t *m, const pa_channel_map *cm, pa_cvolume *v) {
786 pa_alsa_element *e;
787 pa_cvolume rv;
788
789 pa_assert(m);
790 pa_assert(p);
791 pa_assert(cm);
792 pa_assert(v);
793 pa_assert(pa_cvolume_compatible_with_channel_map(v, cm));
794
795 if (!p->has_volume)
796 return -1;
797
798 rv = *v; /* Remaining adjustment */
799 pa_cvolume_reset(v, cm->channels); /* Adjustment done */
800
801 PA_LLIST_FOREACH(e, p->elements) {
802 pa_cvolume ev;
803
804 if (e->volume_use != PA_ALSA_VOLUME_MERGE)
805 continue;
806
807 pa_assert(!p->has_dB || e->has_dB);
808
809 ev = rv;
810 if (element_set_volume(e, m, cm, &ev) < 0)
811 return -1;
812
813 if (!p->has_dB) {
814 *v = ev;
815 return 0;
816 }
817
818 pa_sw_cvolume_multiply(v, v, &ev);
819 pa_sw_cvolume_divide(&rv, &rv, &ev);
820 }
821
822 return 0;
823 }
824
825 static int element_set_switch(pa_alsa_element *e, snd_mixer_t *m, pa_bool_t b) {
826 snd_mixer_elem_t *me;
827 snd_mixer_selem_id_t *sid;
828 int r;
829
830 pa_assert(m);
831 pa_assert(e);
832
833 SELEM_INIT(sid, e->alsa_name);
834 if (!(me = snd_mixer_find_selem(m, sid))) {
835 pa_log_warn("Element %s seems to have disappeared.", e->alsa_name);
836 return -1;
837 }
838
839 if (e->direction == PA_ALSA_DIRECTION_OUTPUT)
840 r = snd_mixer_selem_set_playback_switch_all(me, b);
841 else
842 r = snd_mixer_selem_set_capture_switch_all(me, b);
843
844 if (r < 0)
845 pa_log_warn("Failed to set switch of %s: %s", e->alsa_name, pa_alsa_strerror(errno));
846
847 return r;
848 }
849
850 int pa_alsa_path_set_mute(pa_alsa_path *p, snd_mixer_t *m, pa_bool_t muted) {
851 pa_alsa_element *e;
852
853 pa_assert(m);
854 pa_assert(p);
855
856 if (!p->has_mute)
857 return -1;
858
859 PA_LLIST_FOREACH(e, p->elements) {
860
861 if (e->switch_use != PA_ALSA_SWITCH_MUTE)
862 continue;
863
864 if (element_set_switch(e, m, !muted) < 0)
865 return -1;
866 }
867
868 return 0;
869 }
870
871 static int element_mute_volume(pa_alsa_element *e, snd_mixer_t *m) {
872 snd_mixer_elem_t *me;
873 snd_mixer_selem_id_t *sid;
874 int r;
875
876 pa_assert(m);
877 pa_assert(e);
878
879 SELEM_INIT(sid, e->alsa_name);
880 if (!(me = snd_mixer_find_selem(m, sid))) {
881 pa_log_warn("Element %s seems to have disappeared.", e->alsa_name);
882 return -1;
883 }
884
885 if (e->direction == PA_ALSA_DIRECTION_OUTPUT)
886 r = snd_mixer_selem_set_playback_volume_all(me, e->min_volume);
887 else
888 r = snd_mixer_selem_set_capture_volume_all(me, e->min_volume);
889
890 if (r < 0)
891 pa_log_warn("Faile to set volume to muted of %s: %s", e->alsa_name, pa_alsa_strerror(errno));
892
893 return r;
894 }
895
896 /* The volume to 0dB */
897 static int element_zero_volume(pa_alsa_element *e, snd_mixer_t *m) {
898 snd_mixer_elem_t *me;
899 snd_mixer_selem_id_t *sid;
900 int r;
901
902 pa_assert(m);
903 pa_assert(e);
904
905 SELEM_INIT(sid, e->alsa_name);
906 if (!(me = snd_mixer_find_selem(m, sid))) {
907 pa_log_warn("Element %s seems to have disappeared.", e->alsa_name);
908 return -1;
909 }
910
911 if (e->direction == PA_ALSA_DIRECTION_OUTPUT)
912 r = snd_mixer_selem_set_playback_dB_all(me, 0, +1);
913 else
914 r = snd_mixer_selem_set_capture_dB_all(me, 0, +1);
915
916 if (r < 0)
917 pa_log_warn("Faile to set volume to 0dB of %s: %s", e->alsa_name, pa_alsa_strerror(errno));
918
919 return r;
920 }
921
922 int pa_alsa_path_select(pa_alsa_path *p, snd_mixer_t *m) {
923 pa_alsa_element *e;
924 int r = 0;
925
926 pa_assert(m);
927 pa_assert(p);
928
929 pa_log_debug("Activating path %s", p->name);
930 pa_alsa_path_dump(p);
931
932 PA_LLIST_FOREACH(e, p->elements) {
933
934 switch (e->switch_use) {
935 case PA_ALSA_SWITCH_OFF:
936 r = element_set_switch(e, m, FALSE);
937 break;
938
939 case PA_ALSA_SWITCH_ON:
940 r = element_set_switch(e, m, TRUE);
941 break;
942
943 case PA_ALSA_SWITCH_MUTE:
944 case PA_ALSA_SWITCH_IGNORE:
945 case PA_ALSA_SWITCH_SELECT:
946 r = 0;
947 break;
948 }
949
950 if (r < 0)
951 return -1;
952
953 switch (e->volume_use) {
954 case PA_ALSA_VOLUME_OFF:
955 r = element_mute_volume(e, m);
956 break;
957
958 case PA_ALSA_VOLUME_ZERO:
959 r = element_zero_volume(e, m);
960 break;
961
962 case PA_ALSA_VOLUME_MERGE:
963 case PA_ALSA_VOLUME_IGNORE:
964 r = 0;
965 break;
966 }
967
968 if (r < 0)
969 return -1;
970 }
971
972 return 0;
973 }
974
975 static int check_required(pa_alsa_element *e, snd_mixer_elem_t *me) {
976 pa_bool_t has_switch;
977 pa_bool_t has_enumeration;
978 pa_bool_t has_volume;
979
980 pa_assert(e);
981 pa_assert(me);
982
983 if (e->direction == PA_ALSA_DIRECTION_OUTPUT) {
984 has_switch =
985 snd_mixer_selem_has_playback_switch(me) ||
986 (e->direction_try_other && snd_mixer_selem_has_capture_switch(me));
987 } else {
988 has_switch =
989 snd_mixer_selem_has_capture_switch(me) ||
990 (e->direction_try_other && snd_mixer_selem_has_playback_switch(me));
991 }
992
993 if (e->direction == PA_ALSA_DIRECTION_OUTPUT) {
994 has_volume =
995 snd_mixer_selem_has_playback_volume(me) ||
996 (e->direction_try_other && snd_mixer_selem_has_capture_volume(me));
997 } else {
998 has_volume =
999 snd_mixer_selem_has_capture_volume(me) ||
1000 (e->direction_try_other && snd_mixer_selem_has_playback_volume(me));
1001 }
1002
1003 has_enumeration = snd_mixer_selem_is_enumerated(me);
1004
1005 if ((e->required == PA_ALSA_REQUIRED_SWITCH && !has_switch) ||
1006 (e->required == PA_ALSA_REQUIRED_VOLUME && !has_volume) ||
1007 (e->required == PA_ALSA_REQUIRED_ENUMERATION && !has_enumeration))
1008 return -1;
1009
1010 if (e->required == PA_ALSA_REQUIRED_ANY && !(has_switch || has_volume || has_enumeration))
1011 return -1;
1012
1013 if ((e->required_absent == PA_ALSA_REQUIRED_SWITCH && has_switch) ||
1014 (e->required_absent == PA_ALSA_REQUIRED_VOLUME && has_volume) ||
1015 (e->required_absent == PA_ALSA_REQUIRED_ENUMERATION && has_enumeration))
1016 return -1;
1017
1018 if (e->required_absent == PA_ALSA_REQUIRED_ANY && (has_switch || has_volume || has_enumeration))
1019 return -1;
1020
1021 return 0;
1022 }
1023
1024 static int element_probe(pa_alsa_element *e, snd_mixer_t *m) {
1025 snd_mixer_selem_id_t *sid;
1026 snd_mixer_elem_t *me;
1027
1028 pa_assert(m);
1029 pa_assert(e);
1030
1031 SELEM_INIT(sid, e->alsa_name);
1032
1033 if (!(me = snd_mixer_find_selem(m, sid))) {
1034
1035 if (e->required != PA_ALSA_REQUIRED_IGNORE)
1036 return -1;
1037
1038 e->switch_use = PA_ALSA_SWITCH_IGNORE;
1039 e->volume_use = PA_ALSA_VOLUME_IGNORE;
1040 e->enumeration_use = PA_ALSA_VOLUME_IGNORE;
1041
1042 return 0;
1043 }
1044
1045 if (e->switch_use != PA_ALSA_SWITCH_IGNORE) {
1046 if (e->direction == PA_ALSA_DIRECTION_OUTPUT) {
1047
1048 if (!snd_mixer_selem_has_playback_switch(me)) {
1049 if (e->direction_try_other && snd_mixer_selem_has_capture_switch(me))
1050 e->direction = PA_ALSA_DIRECTION_INPUT;
1051 else
1052 e->switch_use = PA_ALSA_SWITCH_IGNORE;
1053 }
1054
1055 } else {
1056
1057 if (!snd_mixer_selem_has_capture_switch(me)) {
1058 if (e->direction_try_other && snd_mixer_selem_has_playback_switch(me))
1059 e->direction = PA_ALSA_DIRECTION_OUTPUT;
1060 else
1061 e->switch_use = PA_ALSA_SWITCH_IGNORE;
1062 }
1063 }
1064
1065 if (e->switch_use != PA_ALSA_SWITCH_IGNORE)
1066 e->direction_try_other = FALSE;
1067 }
1068
1069 if (e->volume_use != PA_ALSA_VOLUME_IGNORE) {
1070
1071 if (e->direction == PA_ALSA_DIRECTION_OUTPUT) {
1072
1073 if (!snd_mixer_selem_has_playback_volume(me)) {
1074 if (e->direction_try_other && snd_mixer_selem_has_capture_volume(me))
1075 e->direction = PA_ALSA_DIRECTION_INPUT;
1076 else
1077 e->volume_use = PA_ALSA_VOLUME_IGNORE;
1078 }
1079
1080 } else {
1081
1082 if (!snd_mixer_selem_has_capture_volume(me)) {
1083 if (e->direction_try_other && snd_mixer_selem_has_playback_volume(me))
1084 e->direction = PA_ALSA_DIRECTION_OUTPUT;
1085 else
1086 e->volume_use = PA_ALSA_VOLUME_IGNORE;
1087 }
1088 }
1089
1090 if (e->volume_use != PA_ALSA_VOLUME_IGNORE) {
1091 long min_dB = 0, max_dB = 0;
1092 int r;
1093
1094 e->direction_try_other = FALSE;
1095
1096 if (e->direction == PA_ALSA_DIRECTION_OUTPUT)
1097 e->has_dB = snd_mixer_selem_get_playback_dB_range(me, &min_dB, &max_dB) >= 0;
1098 else
1099 e->has_dB = snd_mixer_selem_get_capture_dB_range(me, &min_dB, &max_dB) >= 0;
1100
1101 if (e->has_dB) {
1102 #ifdef HAVE_VALGRIND_MEMCHECK_H
1103 VALGRIND_MAKE_MEM_DEFINED(&min_dB, sizeof(min_dB));
1104 VALGRIND_MAKE_MEM_DEFINED(&max_dB, sizeof(max_dB));
1105 #endif
1106
1107 e->min_dB = ((double) min_dB) / 100.0;
1108 e->max_dB = ((double) max_dB) / 100.0;
1109
1110 if (min_dB >= max_dB) {
1111 pa_log_warn("Your kernel driver is broken: it reports a volume range from %0.2f dB to %0.2f dB which makes no sense.", e->min_dB, e->max_dB);
1112 e->has_dB = FALSE;
1113 }
1114 }
1115
1116 if (e->direction == PA_ALSA_DIRECTION_OUTPUT)
1117 r = snd_mixer_selem_get_playback_volume_range(me, &e->min_volume, &e->max_volume);
1118 else
1119 r = snd_mixer_selem_get_capture_volume_range(me, &e->min_volume, &e->max_volume);
1120
1121 if (r < 0) {
1122 pa_log_warn("Failed to get volume range of %s: %s", e->alsa_name, pa_alsa_strerror(r));
1123 return -1;
1124 }
1125
1126
1127 if (e->min_volume >= e->max_volume) {
1128 pa_log_warn("Your kernel driver is broken: it reports a volume range from %li to %li which makes no sense.", e->min_volume, e->max_volume);
1129 e->volume_use = PA_ALSA_VOLUME_IGNORE;
1130
1131 } else {
1132 pa_bool_t is_mono;
1133 pa_channel_position_t p;
1134
1135 if (e->direction == PA_ALSA_DIRECTION_OUTPUT)
1136 is_mono = snd_mixer_selem_is_playback_mono(me) > 0;
1137 else
1138 is_mono = snd_mixer_selem_is_capture_mono(me) > 0;
1139
1140 if (is_mono) {
1141 e->n_channels = 1;
1142
1143 if (!e->override_map) {
1144 for (p = PA_CHANNEL_POSITION_FRONT_LEFT; p < PA_CHANNEL_POSITION_MAX; p++)
1145 e->masks[alsa_channel_ids[p]][e->n_channels-1] = 0;
1146 e->masks[SND_MIXER_SCHN_MONO][e->n_channels-1] = PA_CHANNEL_POSITION_MASK_ALL;
1147 }
1148
1149 e->merged_mask = e->masks[SND_MIXER_SCHN_MONO][e->n_channels-1];
1150 } else {
1151 e->n_channels = 0;
1152 for (p = PA_CHANNEL_POSITION_FRONT_LEFT; p < PA_CHANNEL_POSITION_MAX; p++) {
1153
1154 if (alsa_channel_ids[p] == SND_MIXER_SCHN_UNKNOWN)
1155 continue;
1156
1157 if (e->direction == PA_ALSA_DIRECTION_OUTPUT)
1158 e->n_channels += snd_mixer_selem_has_playback_channel(me, alsa_channel_ids[p]) > 0;
1159 else
1160 e->n_channels += snd_mixer_selem_has_capture_channel(me, alsa_channel_ids[p]) > 0;
1161 }
1162
1163 if (e->n_channels <= 0) {
1164 pa_log_warn("Volume element %s with no channels?", e->alsa_name);
1165 return -1;
1166 }
1167
1168 if (!e->override_map) {
1169 for (p = PA_CHANNEL_POSITION_FRONT_LEFT; p < PA_CHANNEL_POSITION_MAX; p++) {
1170 pa_bool_t has_channel;
1171
1172 if (alsa_channel_ids[p] == SND_MIXER_SCHN_UNKNOWN)
1173 continue;
1174
1175 if (e->direction == PA_ALSA_DIRECTION_OUTPUT)
1176 has_channel = snd_mixer_selem_has_playback_channel(me, alsa_channel_ids[p]) > 0;
1177 else
1178 has_channel = snd_mixer_selem_has_capture_channel(me, alsa_channel_ids[p]) > 0;
1179
1180 e->masks[alsa_channel_ids[p]][e->n_channels-1] = has_channel ? PA_CHANNEL_POSITION_MASK(p) : 0;
1181 }
1182 }
1183
1184 e->merged_mask = 0;
1185 for (p = PA_CHANNEL_POSITION_FRONT_LEFT; p < PA_CHANNEL_POSITION_MAX; p++)
1186 e->merged_mask |= e->masks[alsa_channel_ids[p]][e->n_channels-1];
1187 }
1188 }
1189 }
1190
1191 }
1192
1193 if (check_required(e, me) < 0)
1194 return -1;
1195
1196 if (e->switch_use == PA_ALSA_SWITCH_SELECT) {
1197 pa_alsa_option *o;
1198
1199 PA_LLIST_FOREACH(o, e->options)
1200 o->alsa_idx = pa_streq(o->alsa_name, "on") ? 1 : 0;
1201 } else if (e->enumeration_use == PA_ALSA_ENUMERATION_SELECT) {
1202 int n;
1203 pa_alsa_option *o;
1204
1205 if ((n = snd_mixer_selem_get_enum_items(me)) < 0) {
1206 pa_log("snd_mixer_selem_get_enum_items() failed: %s", pa_alsa_strerror(n));
1207 return -1;
1208 }
1209
1210 PA_LLIST_FOREACH(o, e->options) {
1211 int i;
1212
1213 for (i = 0; i < n; i++) {
1214 char buf[128];
1215
1216 if (snd_mixer_selem_get_enum_item_name(me, i, sizeof(buf), buf) < 0)
1217 continue;
1218
1219 if (!pa_streq(buf, o->alsa_name))
1220 continue;
1221
1222 o->alsa_idx = i;
1223 }
1224 }
1225 }
1226
1227 return 0;
1228 }
1229
1230 static pa_alsa_element* element_get(pa_alsa_path *p, const char *section, pa_bool_t prefixed) {
1231 pa_alsa_element *e;
1232
1233 pa_assert(p);
1234 pa_assert(section);
1235
1236 if (prefixed) {
1237 if (!pa_startswith(section, "Element "))
1238 return NULL;
1239
1240 section += 8;
1241 }
1242
1243 /* This is not an element section, but an enum section? */
1244 if (strchr(section, ':'))
1245 return NULL;
1246
1247 if (p->last_element && pa_streq(p->last_element->alsa_name, section))
1248 return p->last_element;
1249
1250 PA_LLIST_FOREACH(e, p->elements)
1251 if (pa_streq(e->alsa_name, section))
1252 goto finish;
1253
1254 e = pa_xnew0(pa_alsa_element, 1);
1255 e->path = p;
1256 e->alsa_name = pa_xstrdup(section);
1257 e->direction = p->direction;
1258
1259 PA_LLIST_INSERT_AFTER(pa_alsa_element, p->elements, p->last_element, e);
1260
1261 finish:
1262 p->last_element = e;
1263 return e;
1264 }
1265
1266 static pa_alsa_option* option_get(pa_alsa_path *p, const char *section) {
1267 char *en;
1268 const char *on;
1269 pa_alsa_option *o;
1270 pa_alsa_element *e;
1271
1272 if (!pa_startswith(section, "Option "))
1273 return NULL;
1274
1275 section += 7;
1276
1277 /* This is not an enum section, but an element section? */
1278 if (!(on = strchr(section, ':')))
1279 return NULL;
1280
1281 en = pa_xstrndup(section, on - section);
1282 on++;
1283
1284 if (p->last_option &&
1285 pa_streq(p->last_option->element->alsa_name, en) &&
1286 pa_streq(p->last_option->alsa_name, on)) {
1287 pa_xfree(en);
1288 return p->last_option;
1289 }
1290
1291 pa_assert_se(e = element_get(p, en, FALSE));
1292 pa_xfree(en);
1293
1294 PA_LLIST_FOREACH(o, e->options)
1295 if (pa_streq(o->alsa_name, on))
1296 goto finish;
1297
1298 o = pa_xnew0(pa_alsa_option, 1);
1299 o->element = e;
1300 o->alsa_name = pa_xstrdup(on);
1301 o->alsa_idx = -1;
1302
1303 if (p->last_option && p->last_option->element == e)
1304 PA_LLIST_INSERT_AFTER(pa_alsa_option, e->options, p->last_option, o);
1305 else
1306 PA_LLIST_PREPEND(pa_alsa_option, e->options, o);
1307
1308 finish:
1309 p->last_option = o;
1310 return o;
1311 }
1312
1313 static int element_parse_switch(
1314 const char *filename,
1315 unsigned line,
1316 const char *section,
1317 const char *lvalue,
1318 const char *rvalue,
1319 void *data,
1320 void *userdata) {
1321
1322 pa_alsa_path *p = userdata;
1323 pa_alsa_element *e;
1324
1325 pa_assert(p);
1326
1327 if (!(e = element_get(p, section, TRUE))) {
1328 pa_log("[%s:%u] Switch makes no sense in '%s'", filename, line, section);
1329 return -1;
1330 }
1331
1332 if (pa_streq(rvalue, "ignore"))
1333 e->switch_use = PA_ALSA_SWITCH_IGNORE;
1334 else if (pa_streq(rvalue, "mute"))
1335 e->switch_use = PA_ALSA_SWITCH_MUTE;
1336 else if (pa_streq(rvalue, "off"))
1337 e->switch_use = PA_ALSA_SWITCH_OFF;
1338 else if (pa_streq(rvalue, "on"))
1339 e->switch_use = PA_ALSA_SWITCH_ON;
1340 else if (pa_streq(rvalue, "select"))
1341 e->switch_use = PA_ALSA_SWITCH_SELECT;
1342 else {
1343 pa_log("[%s:%u] Switch invalid of '%s'", filename, line, section);
1344 return -1;
1345 }
1346
1347 return 0;
1348 }
1349
1350 static int element_parse_volume(
1351 const char *filename,
1352 unsigned line,
1353 const char *section,
1354 const char *lvalue,
1355 const char *rvalue,
1356 void *data,
1357 void *userdata) {
1358
1359 pa_alsa_path *p = userdata;
1360 pa_alsa_element *e;
1361
1362 pa_assert(p);
1363
1364 if (!(e = element_get(p, section, TRUE))) {
1365 pa_log("[%s:%u] Volume makes no sense in '%s'", filename, line, section);
1366 return -1;
1367 }
1368
1369 if (pa_streq(rvalue, "ignore"))
1370 e->volume_use = PA_ALSA_VOLUME_IGNORE;
1371 else if (pa_streq(rvalue, "merge"))
1372 e->volume_use = PA_ALSA_VOLUME_MERGE;
1373 else if (pa_streq(rvalue, "off"))
1374 e->volume_use = PA_ALSA_VOLUME_OFF;
1375 else if (pa_streq(rvalue, "zero"))
1376 e->volume_use = PA_ALSA_VOLUME_ZERO;
1377 else {
1378 pa_log("[%s:%u] Volume invalid of '%s'", filename, line, section);
1379 return -1;
1380 }
1381
1382 return 0;
1383 }
1384
1385 static int element_parse_enumeration(
1386 const char *filename,
1387 unsigned line,
1388 const char *section,
1389 const char *lvalue,
1390 const char *rvalue,
1391 void *data,
1392 void *userdata) {
1393
1394 pa_alsa_path *p = userdata;
1395 pa_alsa_element *e;
1396
1397 pa_assert(p);
1398
1399 if (!(e = element_get(p, section, TRUE))) {
1400 pa_log("[%s:%u] Enumeration makes no sense in '%s'", filename, line, section);
1401 return -1;
1402 }
1403
1404 if (pa_streq(rvalue, "ignore"))
1405 e->enumeration_use = PA_ALSA_ENUMERATION_IGNORE;
1406 else if (pa_streq(rvalue, "select"))
1407 e->enumeration_use = PA_ALSA_ENUMERATION_SELECT;
1408 else {
1409 pa_log("[%s:%u] Enumeration invalid of '%s'", filename, line, section);
1410 return -1;
1411 }
1412
1413 return 0;
1414 }
1415
1416 static int option_parse_priority(
1417 const char *filename,
1418 unsigned line,
1419 const char *section,
1420 const char *lvalue,
1421 const char *rvalue,
1422 void *data,
1423 void *userdata) {
1424
1425 pa_alsa_path *p = userdata;
1426 pa_alsa_option *o;
1427 uint32_t prio;
1428
1429 pa_assert(p);
1430
1431 if (!(o = option_get(p, section))) {
1432 pa_log("[%s:%u] Priority makes no sense in '%s'", filename, line, section);
1433 return -1;
1434 }
1435
1436 if (pa_atou(rvalue, &prio) < 0) {
1437 pa_log("[%s:%u] Priority invalid of '%s'", filename, line, section);
1438 return -1;
1439 }
1440
1441 o->priority = prio;
1442 return 0;
1443 }
1444
1445 static int option_parse_name(
1446 const char *filename,
1447 unsigned line,
1448 const char *section,
1449 const char *lvalue,
1450 const char *rvalue,
1451 void *data,
1452 void *userdata) {
1453
1454 pa_alsa_path *p = userdata;
1455 pa_alsa_option *o;
1456
1457 pa_assert(p);
1458
1459 if (!(o = option_get(p, section))) {
1460 pa_log("[%s:%u] Name makes no sense in '%s'", filename, line, section);
1461 return -1;
1462 }
1463
1464 pa_xfree(o->name);
1465 o->name = pa_xstrdup(rvalue);
1466
1467 return 0;
1468 }
1469
1470 static int element_parse_required(
1471 const char *filename,
1472 unsigned line,
1473 const char *section,
1474 const char *lvalue,
1475 const char *rvalue,
1476 void *data,
1477 void *userdata) {
1478
1479 pa_alsa_path *p = userdata;
1480 pa_alsa_element *e;
1481 pa_alsa_required_t req;
1482
1483 pa_assert(p);
1484
1485 if (!(e = element_get(p, section, TRUE))) {
1486 pa_log("[%s:%u] Required makes no sense in '%s'", filename, line, section);
1487 return -1;
1488 }
1489
1490 if (pa_streq(rvalue, "ignore"))
1491 req = PA_ALSA_REQUIRED_IGNORE;
1492 else if (pa_streq(rvalue, "switch"))
1493 req = PA_ALSA_REQUIRED_SWITCH;
1494 else if (pa_streq(rvalue, "volume"))
1495 req = PA_ALSA_REQUIRED_VOLUME;
1496 else if (pa_streq(rvalue, "enumeration"))
1497 req = PA_ALSA_REQUIRED_ENUMERATION;
1498 else if (pa_streq(rvalue, "any"))
1499 req = PA_ALSA_REQUIRED_ANY;
1500 else {
1501 pa_log("[%s:%u] Required invalid of '%s'", filename, line, section);
1502 return -1;
1503 }
1504
1505 if (pa_streq(lvalue, "required-absent"))
1506 e->required_absent = req;
1507 else
1508 e->required = req;
1509
1510 return 0;
1511 }
1512
1513 static int element_parse_direction(
1514 const char *filename,
1515 unsigned line,
1516 const char *section,
1517 const char *lvalue,
1518 const char *rvalue,
1519 void *data,
1520 void *userdata) {
1521
1522 pa_alsa_path *p = userdata;
1523 pa_alsa_element *e;
1524
1525 pa_assert(p);
1526
1527 if (!(e = element_get(p, section, TRUE))) {
1528 pa_log("[%s:%u] Direction makes no sense in '%s'", filename, line, section);
1529 return -1;
1530 }
1531
1532 if (pa_streq(rvalue, "playback"))
1533 e->direction = PA_ALSA_DIRECTION_OUTPUT;
1534 else if (pa_streq(rvalue, "capture"))
1535 e->direction = PA_ALSA_DIRECTION_INPUT;
1536 else {
1537 pa_log("[%s:%u] Direction invalid of '%s'", filename, line, section);
1538 return -1;
1539 }
1540
1541 return 0;
1542 }
1543
1544 static int element_parse_direction_try_other(
1545 const char *filename,
1546 unsigned line,
1547 const char *section,
1548 const char *lvalue,
1549 const char *rvalue,
1550 void *data,
1551 void *userdata) {
1552
1553 pa_alsa_path *p = userdata;
1554 pa_alsa_element *e;
1555 int yes;
1556
1557 if (!(e = element_get(p, section, TRUE))) {
1558 pa_log("[%s:%u] Direction makes no sense in '%s'", filename, line, section);
1559 return -1;
1560 }
1561
1562 if ((yes = pa_parse_boolean(rvalue)) < 0) {
1563 pa_log("[%s:%u] Direction invalid of '%s'", filename, line, section);
1564 return -1;
1565 }
1566
1567 e->direction_try_other = !!yes;
1568 return 0;
1569 }
1570
1571 static pa_channel_position_mask_t parse_mask(const char *m) {
1572 pa_channel_position_mask_t v;
1573
1574 if (pa_streq(m, "all-left"))
1575 v = PA_CHANNEL_POSITION_MASK_LEFT;
1576 else if (pa_streq(m, "all-right"))
1577 v = PA_CHANNEL_POSITION_MASK_RIGHT;
1578 else if (pa_streq(m, "all-center"))
1579 v = PA_CHANNEL_POSITION_MASK_CENTER;
1580 else if (pa_streq(m, "all-front"))
1581 v = PA_CHANNEL_POSITION_MASK_FRONT;
1582 else if (pa_streq(m, "all-rear"))
1583 v = PA_CHANNEL_POSITION_MASK_REAR;
1584 else if (pa_streq(m, "all-side"))
1585 v = PA_CHANNEL_POSITION_MASK_SIDE_OR_TOP_CENTER;
1586 else if (pa_streq(m, "all-top"))
1587 v = PA_CHANNEL_POSITION_MASK_TOP;
1588 else if (pa_streq(m, "all-no-lfe"))
1589 v = PA_CHANNEL_POSITION_MASK_ALL ^ PA_CHANNEL_POSITION_MASK(PA_CHANNEL_POSITION_LFE);
1590 else if (pa_streq(m, "all"))
1591 v = PA_CHANNEL_POSITION_MASK_ALL;
1592 else {
1593 pa_channel_position_t p;
1594
1595 if ((p = pa_channel_position_from_string(m)) == PA_CHANNEL_POSITION_INVALID)
1596 return 0;
1597
1598 v = PA_CHANNEL_POSITION_MASK(p);
1599 }
1600
1601 return v;
1602 }
1603
1604 static int element_parse_override_map(
1605 const char *filename,
1606 unsigned line,
1607 const char *section,
1608 const char *lvalue,
1609 const char *rvalue,
1610 void *data,
1611 void *userdata) {
1612
1613 pa_alsa_path *p = userdata;
1614 pa_alsa_element *e;
1615 const char *state = NULL;
1616 unsigned i = 0;
1617 char *n;
1618
1619 if (!(e = element_get(p, section, TRUE))) {
1620 pa_log("[%s:%u] Override map makes no sense in '%s'", filename, line, section);
1621 return -1;
1622 }
1623
1624 while ((n = pa_split(rvalue, ",", &state))) {
1625 pa_channel_position_mask_t m;
1626
1627 if (!*n)
1628 m = 0;
1629 else {
1630 if ((m = parse_mask(n)) == 0) {
1631 pa_log("[%s:%u] Override map '%s' invalid in '%s'", filename, line, n, section);
1632 pa_xfree(n);
1633 return -1;
1634 }
1635 }
1636
1637 if (pa_streq(lvalue, "override-map.1"))
1638 e->masks[i++][0] = m;
1639 else
1640 e->masks[i++][1] = m;
1641
1642 /* Later on we might add override-map.3 and so on here ... */
1643
1644 pa_xfree(n);
1645 }
1646
1647 e->override_map = TRUE;
1648
1649 return 0;
1650 }
1651
1652 static int element_set_option(pa_alsa_element *e, snd_mixer_t *m, int alsa_idx) {
1653 snd_mixer_selem_id_t *sid;
1654 snd_mixer_elem_t *me;
1655 int r;
1656
1657 pa_assert(e);
1658 pa_assert(m);
1659
1660 SELEM_INIT(sid, e->alsa_name);
1661 if (!(me = snd_mixer_find_selem(m, sid))) {
1662 pa_log_warn("Element %s seems to have disappeared.", e->alsa_name);
1663 return -1;
1664 }
1665
1666 if (e->switch_use == PA_ALSA_SWITCH_SELECT) {
1667
1668 if (e->direction == PA_ALSA_DIRECTION_OUTPUT)
1669 r = snd_mixer_selem_set_playback_switch_all(me, alsa_idx);
1670 else
1671 r = snd_mixer_selem_set_capture_switch_all(me, alsa_idx);
1672
1673 if (r < 0)
1674 pa_log_warn("Faile to set switch of %s: %s", e->alsa_name, pa_alsa_strerror(errno));
1675
1676 } else {
1677 pa_assert(e->enumeration_use == PA_ALSA_ENUMERATION_SELECT);
1678
1679 if ((r = snd_mixer_selem_set_enum_item(me, 0, alsa_idx)) < 0)
1680 pa_log_warn("Faile to set enumeration of %s: %s", e->alsa_name, pa_alsa_strerror(errno));
1681 }
1682
1683 return r;
1684 }
1685
1686 int pa_alsa_setting_select(pa_alsa_setting *s, snd_mixer_t *m) {
1687 pa_alsa_option *o;
1688 uint32_t idx;
1689
1690 pa_assert(s);
1691 pa_assert(m);
1692
1693 PA_IDXSET_FOREACH(o, s->options, idx)
1694 element_set_option(o->element, m, o->alsa_idx);
1695
1696 return 0;
1697 }
1698
1699 static int option_verify(pa_alsa_option *o) {
1700 static const struct description_map well_known_descriptions[] = {
1701 { "input", N_("Input") },
1702 { "input-docking", N_("Docking Station Input") },
1703 { "input-docking-microphone", N_("Docking Station Microphone") },
1704 { "input-linein", N_("Line-In") },
1705 { "input-microphone", N_("Microphone") },
1706 { "input-microphone-external", N_("External Microphone") },
1707 { "input-microphone-internal", N_("Internal Microphone") },
1708 { "input-radio", N_("Radio") },
1709 { "input-video", N_("Video") },
1710 { "input-agc-on", N_("Automatic Gain Control") },
1711 { "input-agc-off", N_("No Automatic Gain Control") },
1712 { "input-boost-on", N_("Boost") },
1713 { "input-boost-off", N_("No Boost") },
1714 { "output-amplifier-on", N_("Amplifier") },
1715 { "output-amplifier-off", N_("No Amplifier") }
1716 };
1717
1718 pa_assert(o);
1719
1720 if (!o->name) {
1721 pa_log("No name set for option %s", o->alsa_name);
1722 return -1;
1723 }
1724
1725 if (o->element->enumeration_use != PA_ALSA_ENUMERATION_SELECT &&
1726 o->element->switch_use != PA_ALSA_SWITCH_SELECT) {
1727 pa_log("Element %s of option %s not set for select.", o->element->alsa_name, o->name);
1728 return -1;
1729 }
1730
1731 if (o->element->switch_use == PA_ALSA_SWITCH_SELECT &&
1732 !pa_streq(o->alsa_name, "on") &&
1733 !pa_streq(o->alsa_name, "off")) {
1734 pa_log("Switch %s options need be named off or on ", o->element->alsa_name);
1735 return -1;
1736 }
1737
1738 if (!o->description)
1739 o->description = pa_xstrdup(lookup_description(o->name,
1740 well_known_descriptions,
1741 PA_ELEMENTSOF(well_known_descriptions)));
1742 if (!o->description)
1743 o->description = pa_xstrdup(o->name);
1744
1745 return 0;
1746 }
1747
1748 static int element_verify(pa_alsa_element *e) {
1749 pa_alsa_option *o;
1750
1751 pa_assert(e);
1752
1753 if ((e->required != PA_ALSA_REQUIRED_IGNORE && e->required == e->required_absent) ||
1754 (e->required_absent == PA_ALSA_REQUIRED_ANY && e->required != PA_ALSA_REQUIRED_IGNORE)) {
1755 pa_log("Element %s cannot be required and absent at the same time.", e->alsa_name);
1756 return -1;
1757 }
1758
1759 if (e->switch_use == PA_ALSA_SWITCH_SELECT && e->enumeration_use == PA_ALSA_ENUMERATION_SELECT) {
1760 pa_log("Element %s cannot set select for both switch and enumeration.", e->alsa_name);
1761 return -1;
1762 }
1763
1764 PA_LLIST_FOREACH(o, e->options)
1765 if (option_verify(o) < 0)
1766 return -1;
1767
1768 return 0;
1769 }
1770
1771 static int path_verify(pa_alsa_path *p) {
1772 static const struct description_map well_known_descriptions[] = {
1773 { "analog-input", N_("Analog Input") },
1774 { "analog-input-microphone", N_("Analog Microphone") },
1775 { "analog-input-linein", N_("Analog Line-In") },
1776 { "analog-input-radio", N_("Analog Radio") },
1777 { "analog-input-video", N_("Analog Video") },
1778 { "analog-output", N_("Analog Output") },
1779 { "analog-output-headphones", N_("Analog Headphones") },
1780 { "analog-output-lfe-on-mono", N_("Analog Output (LFE)") },
1781 { "analog-output-mono", N_("Analog Mono Output") }
1782 };
1783
1784 pa_alsa_element *e;
1785
1786 pa_assert(p);
1787
1788 PA_LLIST_FOREACH(e, p->elements)
1789 if (element_verify(e) < 0)
1790 return -1;
1791
1792 if (!p->description)
1793 p->description = pa_xstrdup(lookup_description(p->name,
1794 well_known_descriptions,
1795 PA_ELEMENTSOF(well_known_descriptions)));
1796
1797 if (!p->description)
1798 p->description = pa_xstrdup(p->name);
1799
1800 return 0;
1801 }
1802
1803 pa_alsa_path* pa_alsa_path_new(const char *fname, pa_alsa_direction_t direction) {
1804 pa_alsa_path *p;
1805 char *fn;
1806 int r;
1807 const char *n;
1808
1809 pa_config_item items[] = {
1810 /* [General] */
1811 { "priority", pa_config_parse_unsigned, NULL, "General" },
1812 { "description", pa_config_parse_string, NULL, "General" },
1813 { "name", pa_config_parse_string, NULL, "General" },
1814
1815 /* [Option ...] */
1816 { "priority", option_parse_priority, NULL, NULL },
1817 { "name", option_parse_name, NULL, NULL },
1818
1819 /* [Element ...] */
1820 { "switch", element_parse_switch, NULL, NULL },
1821 { "volume", element_parse_volume, NULL, NULL },
1822 { "enumeration", element_parse_enumeration, NULL, NULL },
1823 { "override-map.1", element_parse_override_map, NULL, NULL },
1824 { "override-map.2", element_parse_override_map, NULL, NULL },
1825 /* ... later on we might add override-map.3 and so on here ... */
1826 { "required", element_parse_required, NULL, NULL },
1827 { "required-absent", element_parse_required, NULL, NULL },
1828 { "direction", element_parse_direction, NULL, NULL },
1829 { "direction-try-other", element_parse_direction_try_other, NULL, NULL },
1830 { NULL, NULL, NULL, NULL }
1831 };
1832
1833 pa_assert(fname);
1834
1835 p = pa_xnew0(pa_alsa_path, 1);
1836 n = pa_path_get_filename(fname);
1837 p->name = pa_xstrndup(n, strcspn(n, "."));
1838 p->direction = direction;
1839
1840 items[0].data = &p->priority;
1841 items[1].data = &p->description;
1842 items[2].data = &p->name;
1843
1844 fn = pa_maybe_prefix_path(fname,
1845 #if defined(__linux__) && !defined(__OPTIMIZE__)
1846 pa_run_from_build_tree() ? PA_BUILDDIR "/modules/alsa/mixer/paths/" :
1847 #endif
1848 PA_ALSA_PATHS_DIR);
1849
1850 r = pa_config_parse(fn, NULL, items, p);
1851 pa_xfree(fn);
1852
1853 if (r < 0)
1854 goto fail;
1855
1856 if (path_verify(p) < 0)
1857 goto fail;
1858
1859 return p;
1860
1861 fail:
1862 pa_alsa_path_free(p);
1863 return NULL;
1864 }
1865
1866 pa_alsa_path* pa_alsa_path_synthesize(const char*element, pa_alsa_direction_t direction) {
1867 pa_alsa_path *p;
1868 pa_alsa_element *e;
1869
1870 pa_assert(element);
1871
1872 p = pa_xnew0(pa_alsa_path, 1);
1873 p->name = pa_xstrdup(element);
1874 p->direction = direction;
1875
1876 e = pa_xnew0(pa_alsa_element, 1);
1877 e->path = p;
1878 e->alsa_name = pa_xstrdup(element);
1879 e->direction = direction;
1880
1881 e->switch_use = PA_ALSA_SWITCH_MUTE;
1882 e->volume_use = PA_ALSA_VOLUME_MERGE;
1883
1884 PA_LLIST_PREPEND(pa_alsa_element, p->elements, e);
1885 return p;
1886 }
1887
1888 static pa_bool_t element_drop_unsupported(pa_alsa_element *e) {
1889 pa_alsa_option *o, *n;
1890
1891 pa_assert(e);
1892
1893 for (o = e->options; o; o = n) {
1894 n = o->next;
1895
1896 if (o->alsa_idx < 0) {
1897 PA_LLIST_REMOVE(pa_alsa_option, e->options, o);
1898 option_free(o);
1899 }
1900 }
1901
1902 return
1903 e->switch_use != PA_ALSA_SWITCH_IGNORE ||
1904 e->volume_use != PA_ALSA_VOLUME_IGNORE ||
1905 e->enumeration_use != PA_ALSA_ENUMERATION_IGNORE;
1906 }
1907
1908 static void path_drop_unsupported(pa_alsa_path *p) {
1909 pa_alsa_element *e, *n;
1910
1911 pa_assert(p);
1912
1913 for (e = p->elements; e; e = n) {
1914 n = e->next;
1915
1916 if (!element_drop_unsupported(e)) {
1917 PA_LLIST_REMOVE(pa_alsa_element, p->elements, e);
1918 element_free(e);
1919 }
1920 }
1921 }
1922
1923 static void path_make_options_unique(pa_alsa_path *p) {
1924 pa_alsa_element *e;
1925 pa_alsa_option *o, *u;
1926
1927 PA_LLIST_FOREACH(e, p->elements) {
1928 PA_LLIST_FOREACH(o, e->options) {
1929 unsigned i;
1930 char *m;
1931
1932 for (u = o->next; u; u = u->next)
1933 if (pa_streq(u->name, o->name))
1934 break;
1935
1936 if (!u)
1937 continue;
1938
1939 m = pa_xstrdup(o->name);
1940
1941 /* OK, this name is not unique, hence let's rename */
1942 for (i = 1, u = o; u; u = u->next) {
1943 char *nn, *nd;
1944
1945 if (!pa_streq(u->name, m))
1946 continue;
1947
1948 nn = pa_sprintf_malloc("%s-%u", m, i);
1949 pa_xfree(u->name);
1950 u->name = nn;
1951
1952 nd = pa_sprintf_malloc("%s %u", u->description, i);
1953 pa_xfree(u->description);
1954 u->description = nd;
1955
1956 i++;
1957 }
1958
1959 pa_xfree(m);
1960 }
1961 }
1962 }
1963
1964 static pa_bool_t element_create_settings(pa_alsa_element *e, pa_alsa_setting *template) {
1965 pa_alsa_option *o;
1966
1967 for (; e; e = e->next)
1968 if (e->switch_use == PA_ALSA_SWITCH_SELECT ||
1969 e->enumeration_use == PA_ALSA_ENUMERATION_SELECT)
1970 break;
1971
1972 if (!e)
1973 return FALSE;
1974
1975 for (o = e->options; o; o = o->next) {
1976 pa_alsa_setting *s;
1977
1978 if (template) {
1979 s = pa_xnewdup(pa_alsa_setting, template, 1);
1980 s->options = pa_idxset_copy(template->options);
1981 s->name = pa_sprintf_malloc(_("%s+%s"), template->name, o->name);
1982 s->description =
1983 (template->description[0] && o->description[0])
1984 ? pa_sprintf_malloc(_("%s / %s"), template->description, o->description)
1985 : (template->description[0]
1986 ? pa_xstrdup(template->description)
1987 : pa_xstrdup(o->description));
1988
1989 s->priority = PA_MAX(template->priority, o->priority);
1990 } else {
1991 s = pa_xnew0(pa_alsa_setting, 1);
1992 s->options = pa_idxset_new(pa_idxset_trivial_hash_func, pa_idxset_trivial_compare_func);
1993 s->name = pa_xstrdup(o->name);
1994 s->description = pa_xstrdup(o->description);
1995 s->priority = o->priority;
1996 }
1997
1998 pa_idxset_put(s->options, o, NULL);
1999
2000 if (element_create_settings(e->next, s))
2001 /* This is not a leaf, so let's get rid of it */
2002 setting_free(s);
2003 else {
2004 /* This is a leaf, so let's add it */
2005 PA_LLIST_INSERT_AFTER(pa_alsa_setting, e->path->settings, e->path->last_setting, s);
2006
2007 e->path->last_setting = s;
2008 }
2009 }
2010
2011 return TRUE;
2012 }
2013
2014 static void path_create_settings(pa_alsa_path *p) {
2015 pa_assert(p);
2016
2017 element_create_settings(p->elements, NULL);
2018 }
2019
2020 int pa_alsa_path_probe(pa_alsa_path *p, snd_mixer_t *m, pa_bool_t ignore_dB) {
2021 pa_alsa_element *e;
2022 double min_dB[PA_CHANNEL_POSITION_MAX], max_dB[PA_CHANNEL_POSITION_MAX];
2023 pa_channel_position_t t;
2024
2025 pa_assert(p);
2026 pa_assert(m);
2027
2028 if (p->probed)
2029 return 0;
2030
2031 pa_zero(min_dB);
2032 pa_zero(max_dB);
2033
2034 pa_log_debug("Probing path '%s'", p->name);
2035
2036 PA_LLIST_FOREACH(e, p->elements) {
2037 if (element_probe(e, m) < 0) {
2038 p->supported = FALSE;
2039 pa_log_debug("Probe of element '%s' failed.", e->alsa_name);
2040 return -1;
2041 }
2042
2043 if (ignore_dB)
2044 e->has_dB = FALSE;
2045
2046 if (e->volume_use == PA_ALSA_VOLUME_MERGE) {
2047
2048 if (!p->has_volume) {
2049 p->min_volume = e->min_volume;
2050 p->max_volume = e->max_volume;
2051 }
2052
2053 if (e->has_dB) {
2054 if (!p->has_volume) {
2055 for (t = 0; t < PA_CHANNEL_POSITION_MAX; t++)
2056 if (PA_CHANNEL_POSITION_MASK(t) & e->merged_mask) {
2057 min_dB[t] = e->min_dB;
2058 max_dB[t] = e->max_dB;
2059 }
2060
2061 p->has_dB = TRUE;
2062 } else {
2063
2064 if (p->has_dB) {
2065 for (t = 0; t < PA_CHANNEL_POSITION_MAX; t++)
2066 if (PA_CHANNEL_POSITION_MASK(t) & e->merged_mask) {
2067 min_dB[t] += e->min_dB;
2068 max_dB[t] += e->max_dB;
2069 }
2070 } else
2071 /* Hmm, there's another element before us
2072 * which cannot do dB volumes, so we we need
2073 * to 'neutralize' this slider */
2074 e->volume_use = PA_ALSA_VOLUME_ZERO;
2075 }
2076 } else if (p->has_volume)
2077 /* We can't use this volume, so let's ignore it */
2078 e->volume_use = PA_ALSA_VOLUME_IGNORE;
2079
2080 p->has_volume = TRUE;
2081 }
2082
2083 if (e->switch_use == PA_ALSA_SWITCH_MUTE)
2084 p->has_mute = TRUE;
2085 }
2086
2087 path_drop_unsupported(p);
2088 path_make_options_unique(p);
2089 path_create_settings(p);
2090
2091 p->supported = TRUE;
2092 p->probed = TRUE;
2093
2094 p->min_dB = INFINITY;
2095 p->max_dB = -INFINITY;
2096
2097 for (t = 0; t < PA_CHANNEL_POSITION_MAX; t++) {
2098 if (p->min_dB > min_dB[t])
2099 p->min_dB = min_dB[t];
2100
2101 if (p->max_dB < max_dB[t])
2102 p->max_dB = max_dB[t];
2103 }
2104
2105 return 0;
2106 }
2107
2108 void pa_alsa_setting_dump(pa_alsa_setting *s) {
2109 pa_assert(s);
2110
2111 pa_log_debug("Setting %s (%s) priority=%u",
2112 s->name,
2113 pa_strnull(s->description),
2114 s->priority);
2115 }
2116
2117 void pa_alsa_option_dump(pa_alsa_option *o) {
2118 pa_assert(o);
2119
2120 pa_log_debug("Option %s (%s/%s) index=%i, priority=%u",
2121 o->alsa_name,
2122 pa_strnull(o->name),
2123 pa_strnull(o->description),
2124 o->alsa_idx,
2125 o->priority);
2126 }
2127
2128 void pa_alsa_element_dump(pa_alsa_element *e) {
2129 pa_alsa_option *o;
2130 pa_assert(e);
2131
2132 pa_log_debug("Element %s, direction=%i, switch=%i, volume=%i, enumeration=%i, required=%i, required_absent=%i, mask=0x%llx, n_channels=%u, override_map=%s",
2133 e->alsa_name,
2134 e->direction,
2135 e->switch_use,
2136 e->volume_use,
2137 e->enumeration_use,
2138 e->required,
2139 e->required_absent,
2140 (long long unsigned) e->merged_mask,
2141 e->n_channels,
2142 pa_yes_no(e->override_map));
2143
2144 PA_LLIST_FOREACH(o, e->options)
2145 pa_alsa_option_dump(o);
2146 }
2147
2148 void pa_alsa_path_dump(pa_alsa_path *p) {
2149 pa_alsa_element *e;
2150 pa_alsa_setting *s;
2151 pa_assert(p);
2152
2153 pa_log_debug("Path %s (%s), direction=%i, priority=%u, probed=%s, supported=%s, has_mute=%s, has_volume=%s, "
2154 "has_dB=%s, min_volume=%li, max_volume=%li, min_dB=%g, max_dB=%g",
2155 p->name,
2156 pa_strnull(p->description),
2157 p->direction,
2158 p->priority,
2159 pa_yes_no(p->probed),
2160 pa_yes_no(p->supported),
2161 pa_yes_no(p->has_mute),
2162 pa_yes_no(p->has_volume),
2163 pa_yes_no(p->has_dB),
2164 p->min_volume, p->max_volume,
2165 p->min_dB, p->max_dB);
2166
2167 PA_LLIST_FOREACH(e, p->elements)
2168 pa_alsa_element_dump(e);
2169
2170 PA_LLIST_FOREACH(s, p->settings)
2171 pa_alsa_setting_dump(s);
2172 }
2173
2174 static void element_set_callback(pa_alsa_element *e, snd_mixer_t *m, snd_mixer_elem_callback_t cb, void *userdata) {
2175 snd_mixer_selem_id_t *sid;
2176 snd_mixer_elem_t *me;
2177
2178 pa_assert(e);
2179 pa_assert(m);
2180 pa_assert(cb);
2181
2182 SELEM_INIT(sid, e->alsa_name);
2183 if (!(me = snd_mixer_find_selem(m, sid))) {
2184 pa_log_warn("Element %s seems to have disappeared.", e->alsa_name);
2185 return;
2186 }
2187
2188 snd_mixer_elem_set_callback(me, cb);
2189 snd_mixer_elem_set_callback_private(me, userdata);
2190 }
2191
2192 void pa_alsa_path_set_callback(pa_alsa_path *p, snd_mixer_t *m, snd_mixer_elem_callback_t cb, void *userdata) {
2193 pa_alsa_element *e;
2194
2195 pa_assert(p);
2196 pa_assert(m);
2197 pa_assert(cb);
2198
2199 PA_LLIST_FOREACH(e, p->elements)
2200 element_set_callback(e, m, cb, userdata);
2201 }
2202
2203 void pa_alsa_path_set_set_callback(pa_alsa_path_set *ps, snd_mixer_t *m, snd_mixer_elem_callback_t cb, void *userdata) {
2204 pa_alsa_path *p;
2205
2206 pa_assert(ps);
2207 pa_assert(m);
2208 pa_assert(cb);
2209
2210 PA_LLIST_FOREACH(p, ps->paths)
2211 pa_alsa_path_set_callback(p, m, cb, userdata);
2212 }
2213
2214 pa_alsa_path_set *pa_alsa_path_set_new(pa_alsa_mapping *m, pa_alsa_direction_t direction) {
2215 pa_alsa_path_set *ps;
2216 char **pn = NULL, **en = NULL, **ie;
2217
2218 pa_assert(m);
2219 pa_assert(direction == PA_ALSA_DIRECTION_OUTPUT || direction == PA_ALSA_DIRECTION_INPUT);
2220
2221 if (m->direction != PA_ALSA_DIRECTION_ANY && m->direction != direction)
2222 return NULL;
2223
2224 ps = pa_xnew0(pa_alsa_path_set, 1);
2225 ps->direction = direction;
2226
2227 if (direction == PA_ALSA_DIRECTION_OUTPUT)
2228 pn = m->output_path_names;
2229 else if (direction == PA_ALSA_DIRECTION_INPUT)
2230 pn = m->input_path_names;
2231
2232 if (pn) {
2233 char **in;
2234
2235 for (in = pn; *in; in++) {
2236 pa_alsa_path *p;
2237 pa_bool_t duplicate = FALSE;
2238 char **kn, *fn;
2239
2240 for (kn = pn; kn != in; kn++)
2241 if (pa_streq(*kn, *in)) {
2242 duplicate = TRUE;
2243 break;
2244 }
2245
2246 if (duplicate)
2247 continue;
2248
2249 fn = pa_sprintf_malloc("%s.conf", *in);
2250
2251 if ((p = pa_alsa_path_new(fn, direction))) {
2252 p->path_set = ps;
2253 PA_LLIST_INSERT_AFTER(pa_alsa_path, ps->paths, ps->last_path, p);
2254 ps->last_path = p;
2255 }
2256
2257 pa_xfree(fn);
2258 }
2259
2260 return ps;
2261 }
2262
2263 if (direction == PA_ALSA_DIRECTION_OUTPUT)
2264 en = m->output_element;
2265 else if (direction == PA_ALSA_DIRECTION_INPUT)
2266 en = m->input_element;
2267
2268 if (!en) {
2269 pa_alsa_path_set_free(ps);
2270 return NULL;
2271 }
2272
2273 for (ie = en; *ie; ie++) {
2274 char **je;
2275 pa_alsa_path *p;
2276
2277 p = pa_alsa_path_synthesize(*ie, direction);
2278 p->path_set = ps;
2279
2280 /* Mark all other passed elements for require-absent */
2281 for (je = en; *je; je++) {
2282 pa_alsa_element *e;
2283 e = pa_xnew0(pa_alsa_element, 1);
2284 e->path = p;
2285 e->alsa_name = pa_xstrdup(*je);
2286 e->direction = direction;
2287 e->required_absent = PA_ALSA_REQUIRED_ANY;
2288
2289 PA_LLIST_INSERT_AFTER(pa_alsa_element, p->elements, p->last_element, e);
2290 p->last_element = e;
2291 }
2292
2293 PA_LLIST_INSERT_AFTER(pa_alsa_path, ps->paths, ps->last_path, p);
2294 ps->last_path = p;
2295 }
2296
2297 return ps;
2298 }
2299
2300 void pa_alsa_path_set_dump(pa_alsa_path_set *ps) {
2301 pa_alsa_path *p;
2302 pa_assert(ps);
2303
2304 pa_log_debug("Path Set %p, direction=%i, probed=%s",
2305 (void*) ps,
2306 ps->direction,
2307 pa_yes_no(ps->probed));
2308
2309 PA_LLIST_FOREACH(p, ps->paths)
2310 pa_alsa_path_dump(p);
2311 }
2312
2313 static void path_set_unify(pa_alsa_path_set *ps) {
2314 pa_alsa_path *p;
2315 pa_bool_t has_dB = TRUE, has_volume = TRUE, has_mute = TRUE;
2316 pa_assert(ps);
2317
2318 /* We have issues dealing with paths that vary too wildly. That
2319 * means for now we have to have all paths support volume/mute/dB
2320 * or none. */
2321
2322 PA_LLIST_FOREACH(p, ps->paths) {
2323 pa_assert(p->probed);
2324
2325 if (!p->has_volume)
2326 has_volume = FALSE;
2327 else if (!p->has_dB)
2328 has_dB = FALSE;
2329
2330 if (!p->has_mute)
2331 has_mute = FALSE;
2332 }
2333
2334 if (!has_volume || !has_dB || !has_mute) {
2335
2336 if (!has_volume)
2337 pa_log_debug("Some paths of the device lack hardware volume control, disabling hardware control altogether.");
2338 else if (!has_dB)
2339 pa_log_debug("Some paths of the device lack dB information, disabling dB logic altogether.");
2340
2341 if (!has_mute)
2342 pa_log_debug("Some paths of the device lack hardware mute control, disabling hardware control altogether.");
2343
2344 PA_LLIST_FOREACH(p, ps->paths) {
2345 if (!has_volume)
2346 p->has_volume = FALSE;
2347 else if (!has_dB)
2348 p->has_dB = FALSE;
2349
2350 if (!has_mute)
2351 p->has_mute = FALSE;
2352 }
2353 }
2354 }
2355
2356 static void path_set_make_paths_unique(pa_alsa_path_set *ps) {
2357 pa_alsa_path *p, *q;
2358
2359 PA_LLIST_FOREACH(p, ps->paths) {
2360 unsigned i;
2361 char *m;
2362
2363 for (q = p->next; q; q = q->next)
2364 if (pa_streq(q->name, p->name))
2365 break;
2366
2367 if (!q)
2368 continue;
2369
2370 m = pa_xstrdup(p->name);
2371
2372 /* OK, this name is not unique, hence let's rename */
2373 for (i = 1, q = p; q; q = q->next) {
2374 char *nn, *nd;
2375
2376 if (!pa_streq(q->name, m))
2377 continue;
2378
2379 nn = pa_sprintf_malloc("%s-%u", m, i);
2380 pa_xfree(q->name);
2381 q->name = nn;
2382
2383 nd = pa_sprintf_malloc("%s %u", q->description, i);
2384 pa_xfree(q->description);
2385 q->description = nd;
2386
2387 i++;
2388 }
2389
2390 pa_xfree(m);
2391 }
2392 }
2393
2394 void pa_alsa_path_set_probe(pa_alsa_path_set *ps, snd_mixer_t *m, pa_bool_t ignore_dB) {
2395 pa_alsa_path *p, *n;
2396
2397 pa_assert(ps);
2398
2399 if (ps->probed)
2400 return;
2401
2402 for (p = ps->paths; p; p = n) {
2403 n = p->next;
2404
2405 if (pa_alsa_path_probe(p, m, ignore_dB) < 0) {
2406 PA_LLIST_REMOVE(pa_alsa_path, ps->paths, p);
2407 pa_alsa_path_free(p);
2408 }
2409 }
2410
2411 path_set_unify(ps);
2412 path_set_make_paths_unique(ps);
2413 ps->probed = TRUE;
2414 }
2415
2416 static void mapping_free(pa_alsa_mapping *m) {
2417 pa_assert(m);
2418
2419 pa_xfree(m->name);
2420 pa_xfree(m->description);
2421
2422 pa_xstrfreev(m->device_strings);
2423 pa_xstrfreev(m->input_path_names);
2424 pa_xstrfreev(m->output_path_names);
2425 pa_xstrfreev(m->input_element);
2426 pa_xstrfreev(m->output_element);
2427
2428 pa_assert(!m->input_pcm);
2429 pa_assert(!m->output_pcm);
2430
2431 pa_xfree(m);
2432 }
2433
2434 static void profile_free(pa_alsa_profile *p) {
2435 pa_assert(p);
2436
2437 pa_xfree(p->name);
2438 pa_xfree(p->description);
2439
2440 pa_xstrfreev(p->input_mapping_names);
2441 pa_xstrfreev(p->output_mapping_names);
2442
2443 if (p->input_mappings)
2444 pa_idxset_free(p->input_mappings, NULL, NULL);
2445
2446 if (p->output_mappings)
2447 pa_idxset_free(p->output_mappings, NULL, NULL);
2448
2449 pa_xfree(p);
2450 }
2451
2452 void pa_alsa_profile_set_free(pa_alsa_profile_set *ps) {
2453 pa_assert(ps);
2454
2455 if (ps->profiles) {
2456 pa_alsa_profile *p;
2457
2458 while ((p = pa_hashmap_steal_first(ps->profiles)))
2459 profile_free(p);
2460
2461 pa_hashmap_free(ps->profiles, NULL, NULL);
2462 }
2463
2464 if (ps->mappings) {
2465 pa_alsa_mapping *m;
2466
2467 while ((m = pa_hashmap_steal_first(ps->mappings)))
2468 mapping_free(m);
2469
2470 pa_hashmap_free(ps->mappings, NULL, NULL);
2471 }
2472
2473 pa_xfree(ps);
2474 }
2475
2476 static pa_alsa_mapping *mapping_get(pa_alsa_profile_set *ps, const char *name) {
2477 pa_alsa_mapping *m;
2478
2479 if (!pa_startswith(name, "Mapping "))
2480 return NULL;
2481
2482 name += 8;
2483
2484 if ((m = pa_hashmap_get(ps->mappings, name)))
2485 return m;
2486
2487 m = pa_xnew0(pa_alsa_mapping, 1);
2488 m->profile_set = ps;
2489 m->name = pa_xstrdup(name);
2490 pa_channel_map_init(&m->channel_map);
2491
2492 pa_hashmap_put(ps->mappings, m->name, m);
2493
2494 return m;
2495 }
2496
2497 static pa_alsa_profile *profile_get(pa_alsa_profile_set *ps, const char *name) {
2498 pa_alsa_profile *p;
2499
2500 if (!pa_startswith(name, "Profile "))
2501 return NULL;
2502
2503 name += 8;
2504
2505 if ((p = pa_hashmap_get(ps->profiles, name)))
2506 return p;
2507
2508 p = pa_xnew0(pa_alsa_profile, 1);
2509 p->profile_set = ps;
2510 p->name = pa_xstrdup(name);
2511
2512 pa_hashmap_put(ps->profiles, p->name, p);
2513
2514 return p;
2515 }
2516
2517 static int mapping_parse_device_strings(
2518 const char *filename,
2519 unsigned line,
2520 const char *section,
2521 const char *lvalue,
2522 const char *rvalue,
2523 void *data,
2524 void *userdata) {
2525
2526 pa_alsa_profile_set *ps = userdata;
2527 pa_alsa_mapping *m;
2528
2529 pa_assert(ps);
2530
2531 if (!(m = mapping_get(ps, section))) {
2532 pa_log("[%s:%u] %s invalid in section %s", filename, line, lvalue, section);
2533 return -1;
2534 }
2535
2536 pa_xstrfreev(m->device_strings);
2537 if (!(m->device_strings = pa_split_spaces_strv(rvalue))) {
2538 pa_log("[%s:%u] Device string list empty of '%s'", filename, line, section);
2539 return -1;
2540 }
2541
2542 return 0;
2543 }
2544
2545 static int mapping_parse_channel_map(
2546 const char *filename,
2547 unsigned line,
2548 const char *section,
2549 const char *lvalue,
2550 const char *rvalue,
2551 void *data,
2552 void *userdata) {
2553
2554 pa_alsa_profile_set *ps = userdata;
2555 pa_alsa_mapping *m;
2556
2557 pa_assert(ps);
2558
2559 if (!(m = mapping_get(ps, section))) {
2560 pa_log("[%s:%u] %s invalid in section %s", filename, line, lvalue, section);
2561 return -1;
2562 }
2563
2564 if (!(pa_channel_map_parse(&m->channel_map, rvalue))) {
2565 pa_log("[%s:%u] Channel map invalid of '%s'", filename, line, section);
2566 return -1;
2567 }
2568
2569 return 0;
2570 }
2571
2572 static int mapping_parse_paths(
2573 const char *filename,
2574 unsigned line,
2575 const char *section,
2576 const char *lvalue,
2577 const char *rvalue,
2578 void *data,
2579 void *userdata) {
2580
2581 pa_alsa_profile_set *ps = userdata;
2582 pa_alsa_mapping *m;
2583
2584 pa_assert(ps);
2585
2586 if (!(m = mapping_get(ps, section))) {
2587 pa_log("[%s:%u] %s invalid in section %s", filename, line, lvalue, section);
2588 return -1;
2589 }
2590
2591 if (pa_streq(lvalue, "paths-input")) {
2592 pa_xstrfreev(m->input_path_names);
2593 m->input_path_names = pa_split_spaces_strv(rvalue);
2594 } else {
2595 pa_xstrfreev(m->output_path_names);
2596 m->output_path_names = pa_split_spaces_strv(rvalue);
2597 }
2598
2599 return 0;
2600 }
2601
2602 static int mapping_parse_element(
2603 const char *filename,
2604 unsigned line,
2605 const char *section,
2606 const char *lvalue,
2607 const char *rvalue,
2608 void *data,
2609 void *userdata) {
2610
2611 pa_alsa_profile_set *ps = userdata;
2612 pa_alsa_mapping *m;
2613
2614 pa_assert(ps);
2615
2616 if (!(m = mapping_get(ps, section))) {
2617 pa_log("[%s:%u] %s invalid in section %s", filename, line, lvalue, section);
2618 return -1;
2619 }
2620
2621 if (pa_streq(lvalue, "element-input")) {
2622 pa_xstrfreev(m->input_element);
2623 m->input_element = pa_split_spaces_strv(rvalue);
2624 } else {
2625 pa_xstrfreev(m->output_element);
2626 m->output_element = pa_split_spaces_strv(rvalue);
2627 }
2628
2629 return 0;
2630 }
2631
2632 static int mapping_parse_direction(
2633 const char *filename,
2634 unsigned line,
2635 const char *section,
2636 const char *lvalue,
2637 const char *rvalue,
2638 void *data,
2639 void *userdata) {
2640
2641 pa_alsa_profile_set *ps = userdata;
2642 pa_alsa_mapping *m;
2643
2644 pa_assert(ps);
2645
2646 if (!(m = mapping_get(ps, section))) {
2647 pa_log("[%s:%u] Section name %s invalid.", filename, line, section);
2648 return -1;
2649 }
2650
2651 if (pa_streq(rvalue, "input"))
2652 m->direction = PA_ALSA_DIRECTION_INPUT;
2653 else if (pa_streq(rvalue, "output"))
2654 m->direction = PA_ALSA_DIRECTION_OUTPUT;
2655 else if (pa_streq(rvalue, "any"))
2656 m->direction = PA_ALSA_DIRECTION_ANY;
2657 else {
2658 pa_log("[%s:%u] Direction %s invalid.", filename, line, rvalue);
2659 return -1;
2660 }
2661
2662 return 0;
2663 }
2664
2665 static int mapping_parse_description(
2666 const char *filename,
2667 unsigned line,
2668 const char *section,
2669 const char *lvalue,
2670 const char *rvalue,
2671 void *data,
2672 void *userdata) {
2673
2674 pa_alsa_profile_set *ps = userdata;
2675 pa_alsa_profile *p;
2676 pa_alsa_mapping *m;
2677
2678 pa_assert(ps);
2679
2680 if ((m = mapping_get(ps, section))) {
2681 pa_xstrdup(m->description);
2682 m->description = pa_xstrdup(rvalue);
2683 } else if ((p = profile_get(ps, section))) {
2684 pa_xfree(p->description);
2685 p->description = pa_xstrdup(rvalue);
2686 } else {
2687 pa_log("[%s:%u] Section name %s invalid.", filename, line, section);
2688 return -1;
2689 }
2690
2691 return 0;
2692 }
2693
2694 static int mapping_parse_priority(
2695 const char *filename,
2696 unsigned line,
2697 const char *section,
2698 const char *lvalue,
2699 const char *rvalue,
2700 void *data,
2701 void *userdata) {
2702
2703 pa_alsa_profile_set *ps = userdata;
2704 pa_alsa_profile *p;
2705 pa_alsa_mapping *m;
2706 uint32_t prio;
2707
2708 pa_assert(ps);
2709
2710 if (pa_atou(rvalue, &prio) < 0) {
2711 pa_log("[%s:%u] Priority invalid of '%s'", filename, line, section);
2712 return -1;
2713 }
2714
2715 if ((m = mapping_get(ps, section)))
2716 m->priority = prio;
2717 else if ((p = profile_get(ps, section)))
2718 p->priority = prio;
2719 else {
2720 pa_log("[%s:%u] Section name %s invalid.", filename, line, section);
2721 return -1;
2722 }
2723
2724 return 0;
2725 }
2726
2727 static int profile_parse_mappings(
2728 const char *filename,
2729 unsigned line,
2730 const char *section,
2731 const char *lvalue,
2732 const char *rvalue,
2733 void *data,
2734 void *userdata) {
2735
2736 pa_alsa_profile_set *ps = userdata;
2737 pa_alsa_profile *p;
2738
2739 pa_assert(ps);
2740
2741 if (!(p = profile_get(ps, section))) {
2742 pa_log("[%s:%u] %s invalid in section %s", filename, line, lvalue, section);
2743 return -1;
2744 }
2745
2746 if (pa_streq(lvalue, "input-mappings")) {
2747 pa_xstrfreev(p->input_mapping_names);
2748 p->input_mapping_names = pa_split_spaces_strv(rvalue);
2749 } else {
2750 pa_xstrfreev(p->output_mapping_names);
2751 p->output_mapping_names = pa_split_spaces_strv(rvalue);
2752 }
2753
2754 return 0;
2755 }
2756
2757 static int profile_parse_skip_probe(
2758 const char *filename,
2759 unsigned line,
2760 const char *section,
2761 const char *lvalue,
2762 const char *rvalue,
2763 void *data,
2764 void *userdata) {
2765
2766 pa_alsa_profile_set *ps = userdata;
2767 pa_alsa_profile *p;
2768 int b;
2769
2770 pa_assert(ps);
2771
2772 if (!(p = profile_get(ps, section))) {
2773 pa_log("[%s:%u] %s invalid in section %s", filename, line, lvalue, section);
2774 return -1;
2775 }
2776
2777 if ((b = pa_parse_boolean(rvalue)) < 0) {
2778 pa_log("[%s:%u] Skip probe invalid of '%s'", filename, line, section);
2779 return -1;
2780 }
2781
2782 p->supported = b;
2783
2784 return 0;
2785 }
2786
2787 static int mapping_verify(pa_alsa_mapping *m, const pa_channel_map *bonus) {
2788
2789 static const struct description_map well_known_descriptions[] = {
2790 { "analog-mono", N_("Analog Mono") },
2791 { "analog-stereo", N_("Analog Stereo") },
2792 { "analog-surround-21", N_("Analog Surround 2.1") },
2793 { "analog-surround-30", N_("Analog Surround 3.0") },
2794 { "analog-surround-31", N_("Analog Surround 3.1") },
2795 { "analog-surround-40", N_("Analog Surround 4.0") },
2796 { "analog-surround-41", N_("Analog Surround 4.1") },
2797 { "analog-surround-50", N_("Analog Surround 5.0") },
2798 { "analog-surround-51", N_("Analog Surround 5.1") },
2799 { "analog-surround-61", N_("Analog Surround 6.0") },
2800 { "analog-surround-61", N_("Analog Surround 6.1") },
2801 { "analog-surround-70", N_("Analog Surround 7.0") },
2802 { "analog-surround-71", N_("Analog Surround 7.1") },
2803 { "iec958-stereo", N_("Digital Stereo (IEC958)") },
2804 { "iec958-surround-40", N_("Digital Surround 4.0 (IEC958)") },
2805 { "iec958-ac3-surround-40", N_("Digital Surround 4.0 (IEC958/AC3)") },
2806 { "iec958-ac3-surround-51", N_("Digital Surround 5.1 (IEC958/AC3)") },
2807 { "hdmi-stereo", N_("Digital Stereo (HDMI)") }
2808 };
2809
2810 pa_assert(m);
2811
2812 if (!pa_channel_map_valid(&m->channel_map)) {
2813 pa_log("Mapping %s is missing channel map.", m->name);
2814 return -1;
2815 }
2816
2817 if (!m->device_strings) {
2818 pa_log("Mapping %s is missing device strings.", m->name);
2819 return -1;
2820 }
2821
2822 if ((m->input_path_names && m->input_element) ||
2823 (m->output_path_names && m->output_element)) {
2824 pa_log("Mapping %s must have either mixer path or mixer elment, not both.", m->name);
2825 return -1;
2826 }
2827
2828 if (!m->description)
2829 m->description = pa_xstrdup(lookup_description(m->name,
2830 well_known_descriptions,
2831 PA_ELEMENTSOF(well_known_descriptions)));
2832
2833 if (!m->description)
2834 m->description = pa_xstrdup(m->name);
2835
2836 if (bonus) {
2837 if (pa_channel_map_equal(&m->channel_map, bonus))
2838 m->priority += 50;
2839 else if (m->channel_map.channels == bonus->channels)
2840 m->priority += 30;
2841 }
2842
2843 return 0;
2844 }
2845
2846 void pa_alsa_mapping_dump(pa_alsa_mapping *m) {
2847 char cm[PA_CHANNEL_MAP_SNPRINT_MAX];
2848
2849 pa_assert(m);
2850
2851 pa_log_debug("Mapping %s (%s), priority=%u, channel_map=%s, supported=%s, direction=%i",
2852 m->name,
2853 pa_strnull(m->description),
2854 m->priority,
2855 pa_channel_map_snprint(cm, sizeof(cm), &m->channel_map),
2856 pa_yes_no(m->supported),
2857 m->direction);
2858 }
2859
2860 static void profile_set_add_auto_pair(
2861 pa_alsa_profile_set *ps,
2862 pa_alsa_mapping *m, /* output */
2863 pa_alsa_mapping *n /* input */) {
2864
2865 char *name;
2866 pa_alsa_profile *p;
2867
2868 pa_assert(ps);
2869 pa_assert(m || n);
2870
2871 if (m && m->direction == PA_ALSA_DIRECTION_INPUT)
2872 return;
2873
2874 if (n && n->direction == PA_ALSA_DIRECTION_OUTPUT)
2875 return;
2876
2877 if (m && n)
2878 name = pa_sprintf_malloc("output:%s+input:%s", m->name, n->name);
2879 else if (m)
2880 name = pa_sprintf_malloc("output:%s", m->name);
2881 else
2882 name = pa_sprintf_malloc("input:%s", n->name);
2883
2884 if (pa_hashmap_get(ps->profiles, name)) {
2885 pa_xfree(name);
2886 return;
2887 }
2888
2889 p = pa_xnew0(pa_alsa_profile, 1);
2890 p->profile_set = ps;
2891 p->name = name;
2892
2893 if (m) {
2894 p->output_mappings = pa_idxset_new(pa_idxset_trivial_hash_func, pa_idxset_trivial_compare_func);
2895 pa_idxset_put(p->output_mappings, m, NULL);
2896 p->priority += m->priority * 100;
2897 }
2898
2899 if (n) {
2900 p->input_mappings = pa_idxset_new(pa_idxset_trivial_hash_func, pa_idxset_trivial_compare_func);
2901 pa_idxset_put(p->input_mappings, n, NULL);
2902 p->priority += n->priority;
2903 }
2904
2905 pa_hashmap_put(ps->profiles, p->name, p);
2906 }
2907
2908 static void profile_set_add_auto(pa_alsa_profile_set *ps) {
2909 pa_alsa_mapping *m, *n;
2910 void *m_state, *n_state;
2911
2912 pa_assert(ps);
2913
2914 PA_HASHMAP_FOREACH(m, ps->mappings, m_state) {
2915 profile_set_add_auto_pair(ps, m, NULL);
2916
2917 PA_HASHMAP_FOREACH(n, ps->mappings, n_state)
2918 profile_set_add_auto_pair(ps, m, n);
2919 }
2920
2921 PA_HASHMAP_FOREACH(n, ps->mappings, n_state)
2922 profile_set_add_auto_pair(ps, NULL, n);
2923 }
2924
2925 static int profile_verify(pa_alsa_profile *p) {
2926
2927 static const struct description_map well_known_descriptions[] = {
2928 { "output:analog-mono+input:analog-mono", N_("Analog Mono Duplex") },
2929 { "output:analog-stereo+input:analog-stereo", N_("Analog Stereo Duplex") },
2930 { "output:iec958-stereo", N_("Digital Stereo Duplex (IEC958)") },
2931 { "off", N_("Off") }
2932 };
2933
2934 pa_assert(p);
2935
2936 /* Replace the output mapping names by the actual mappings */
2937 if (p->output_mapping_names) {
2938 char **name;
2939
2940 pa_assert(!p->output_mappings);
2941 p->output_mappings = pa_idxset_new(pa_idxset_trivial_hash_func, pa_idxset_trivial_compare_func);
2942
2943 for (name = p->output_mapping_names; *name; name++) {
2944 pa_alsa_mapping *m;
2945 char **in;
2946 pa_bool_t duplicate = FALSE;
2947
2948 for (in = name + 1; *in; in++)
2949 if (pa_streq(*name, *in)) {
2950 duplicate = TRUE;
2951 break;
2952 }
2953
2954 if (duplicate)
2955 continue;
2956
2957 if (!(m = pa_hashmap_get(p->profile_set->mappings, *name)) || m->direction == PA_ALSA_DIRECTION_INPUT) {
2958 pa_log("Profile '%s' refers to unexistant mapping '%s'.", p->name, *name);
2959 return -1;
2960 }
2961
2962 pa_idxset_put(p->output_mappings, m, NULL);
2963
2964 if (p->supported)
2965 m->supported++;
2966 }
2967
2968 pa_xstrfreev(p->output_mapping_names);
2969 p->output_mapping_names = NULL;
2970 }
2971
2972 /* Replace the input mapping names by the actual mappings */
2973 if (p->input_mapping_names) {
2974 char **name;
2975
2976 pa_assert(!p->input_mappings);
2977 p->input_mappings = pa_idxset_new(pa_idxset_trivial_hash_func, pa_idxset_trivial_compare_func);
2978
2979 for (name = p->input_mapping_names; *name; name++) {
2980 pa_alsa_mapping *m;
2981 char **in;
2982 pa_bool_t duplicate = FALSE;
2983
2984 for (in = name + 1; *in; in++)
2985 if (pa_streq(*name, *in)) {
2986 duplicate = TRUE;
2987 break;
2988 }
2989
2990 if (duplicate)
2991 continue;
2992
2993 if (!(m = pa_hashmap_get(p->profile_set->mappings, *name)) || m->direction == PA_ALSA_DIRECTION_OUTPUT) {
2994 pa_log("Profile '%s' refers to unexistant mapping '%s'.", p->name, *name);
2995 return -1;
2996 }
2997
2998 pa_idxset_put(p->input_mappings, m, NULL);
2999
3000 if (p->supported)
3001 m->supported++;
3002 }
3003
3004 pa_xstrfreev(p->input_mapping_names);
3005 p->input_mapping_names = NULL;
3006 }
3007
3008 if (!p->input_mappings && !p->output_mappings) {
3009 pa_log("Profile '%s' lacks mappings.", p->name);
3010 return -1;
3011 }
3012
3013 if (!p->description)
3014 p->description = pa_xstrdup(lookup_description(p->name,
3015 well_known_descriptions,
3016 PA_ELEMENTSOF(well_known_descriptions)));
3017
3018 if (!p->description) {
3019 pa_strbuf *sb;
3020 uint32_t idx;
3021 pa_alsa_mapping *m;
3022
3023 sb = pa_strbuf_new();
3024
3025 if (p->output_mappings)
3026 PA_IDXSET_FOREACH(m, p->output_mappings, idx) {
3027 if (!pa_strbuf_isempty(sb))
3028 pa_strbuf_puts(sb, " + ");
3029
3030 pa_strbuf_printf(sb, "%s Output", m->description);
3031 }
3032
3033 if (p->input_mappings)
3034 PA_IDXSET_FOREACH(m, p->input_mappings, idx) {
3035 if (!pa_strbuf_isempty(sb))
3036 pa_strbuf_puts(sb, " + ");
3037
3038 pa_strbuf_printf(sb, "%s Input", m->description);
3039 }
3040
3041 p->description = pa_strbuf_tostring_free(sb);
3042 }
3043
3044 return 0;
3045 }
3046
3047 void pa_alsa_profile_dump(pa_alsa_profile *p) {
3048 uint32_t idx;
3049 pa_alsa_mapping *m;
3050 pa_assert(p);
3051
3052 pa_log_debug("Profile %s (%s), priority=%u, supported=%s n_input_mappings=%u, n_output_mappings=%u",
3053 p->name,
3054 pa_strnull(p->description),
3055 p->priority,
3056 pa_yes_no(p->supported),
3057 p->input_mappings ? pa_idxset_size(p->input_mappings) : 0,
3058 p->output_mappings ? pa_idxset_size(p->output_mappings) : 0);
3059
3060 if (p->input_mappings)
3061 PA_IDXSET_FOREACH(m, p->input_mappings, idx)
3062 pa_log_debug("Input %s", m->name);
3063
3064 if (p->output_mappings)
3065 PA_IDXSET_FOREACH(m, p->output_mappings, idx)
3066 pa_log_debug("Output %s", m->name);
3067 }
3068
3069 pa_alsa_profile_set* pa_alsa_profile_set_new(const char *fname, const pa_channel_map *bonus) {
3070 pa_alsa_profile_set *ps;
3071 pa_alsa_profile *p;
3072 pa_alsa_mapping *m;
3073 char *fn;
3074 int r;
3075 void *state;
3076
3077 static pa_config_item items[] = {
3078 /* [General] */
3079 { "auto-profiles", pa_config_parse_bool, NULL, "General" },
3080
3081 /* [Mapping ...] */
3082 { "device-strings", mapping_parse_device_strings, NULL, NULL },
3083 { "channel-map", mapping_parse_channel_map, NULL, NULL },
3084 { "paths-input", mapping_parse_paths, NULL, NULL },
3085 { "paths-output", mapping_parse_paths, NULL, NULL },
3086 { "element-input", mapping_parse_element, NULL, NULL },
3087 { "element-output", mapping_parse_element, NULL, NULL },
3088 { "direction", mapping_parse_direction, NULL, NULL },
3089
3090 /* Shared by [Mapping ...] and [Profile ...] */
3091 { "description", mapping_parse_description, NULL, NULL },
3092 { "priority", mapping_parse_priority, NULL, NULL },
3093
3094 /* [Profile ...] */
3095 { "input-mappings", profile_parse_mappings, NULL, NULL },
3096 { "output-mappings", profile_parse_mappings, NULL, NULL },
3097 { "skip-probe", profile_parse_skip_probe, NULL, NULL },
3098 { NULL, NULL, NULL, NULL }
3099 };
3100
3101 ps = pa_xnew0(pa_alsa_profile_set, 1);
3102 ps->mappings = pa_hashmap_new(pa_idxset_string_hash_func, pa_idxset_string_compare_func);
3103 ps->profiles = pa_hashmap_new(pa_idxset_string_hash_func, pa_idxset_string_compare_func);
3104
3105 items[0].data = &ps->auto_profiles;
3106
3107 if (!fname)
3108 fname = "default.conf";
3109
3110 fn = pa_maybe_prefix_path(fname,
3111 #if defined(__linux__) && !defined(__OPTIMIZE__)
3112 pa_run_from_build_tree() ? PA_BUILDDIR "/modules/alsa/mixer/profile-sets/" :
3113 #endif
3114 PA_ALSA_PROFILE_SETS_DIR);
3115
3116 r = pa_config_parse(fn, NULL, items, ps);
3117 pa_xfree(fn);
3118
3119 if (r < 0)
3120 goto fail;
3121
3122 PA_HASHMAP_FOREACH(m, ps->mappings, state)
3123 if (mapping_verify(m, bonus) < 0)
3124 goto fail;
3125
3126 if (ps->auto_profiles)
3127 profile_set_add_auto(ps);
3128
3129 PA_HASHMAP_FOREACH(p, ps->profiles, state)
3130 if (profile_verify(p) < 0)
3131 goto fail;
3132
3133 return ps;
3134
3135 fail:
3136 pa_alsa_profile_set_free(ps);
3137 return NULL;
3138 }
3139
3140 void pa_alsa_profile_set_probe(
3141 pa_alsa_profile_set *ps,
3142 const char *dev_id,
3143 const pa_sample_spec *ss,
3144 unsigned default_n_fragments,
3145 unsigned default_fragment_size_msec) {
3146
3147 void *state;
3148 pa_alsa_profile *p, *last = NULL;
3149 pa_alsa_mapping *m;
3150
3151 pa_assert(ps);
3152 pa_assert(dev_id);
3153 pa_assert(ss);
3154
3155 if (ps->probed)
3156 return;
3157
3158 PA_HASHMAP_FOREACH(p, ps->profiles, state) {
3159 pa_sample_spec try_ss;
3160 pa_channel_map try_map;
3161 snd_pcm_uframes_t try_period_size, try_buffer_size;
3162 uint32_t idx;
3163
3164 /* Is this already marked that it is supported? (i.e. from the config file) */
3165 if (p->supported)
3166 continue;
3167
3168 pa_log_debug("Looking at profile %s", p->name);
3169
3170 /* Close PCMs from the last iteration we don't need anymore */
3171 if (last && last->output_mappings)
3172 PA_IDXSET_FOREACH(m, last->output_mappings, idx) {
3173
3174 if (!m->output_pcm)
3175 break;
3176
3177 if (last->supported)
3178 m->supported++;
3179
3180 if (!p->output_mappings || !pa_idxset_get_by_data(p->output_mappings, m, NULL)) {
3181 snd_pcm_close(m->output_pcm);
3182 m->output_pcm = NULL;
3183 }
3184 }
3185
3186 if (last && last->input_mappings)
3187 PA_IDXSET_FOREACH(m, last->input_mappings, idx) {
3188
3189 if (!m->input_pcm)
3190 break;
3191
3192 if (last->supported)
3193 m->supported++;
3194
3195 if (!p->input_mappings || !pa_idxset_get_by_data(p->input_mappings, m, NULL)) {
3196 snd_pcm_close(m->input_pcm);
3197 m->input_pcm = NULL;
3198 }
3199 }
3200
3201 p->supported = TRUE;
3202
3203 /* Check if we can open all new ones */
3204 if (p->output_mappings)
3205 PA_IDXSET_FOREACH(m, p->output_mappings, idx) {
3206
3207 if (m->output_pcm)
3208 continue;
3209
3210 pa_log_debug("Checking for playback on %s (%s)", m->description, m->name);
3211 try_map = m->channel_map;
3212 try_ss = *ss;
3213 try_ss.channels = try_map.channels;
3214
3215 try_period_size =
3216 pa_usec_to_bytes(default_fragment_size_msec * PA_USEC_PER_MSEC, &try_ss) /
3217 pa_frame_size(&try_ss);
3218 try_buffer_size = default_n_fragments * try_period_size;
3219
3220 if (!(m ->output_pcm = pa_alsa_open_by_template(
3221 m->device_strings,
3222 dev_id,
3223 NULL,
3224 &try_ss, &try_map,
3225 SND_PCM_STREAM_PLAYBACK,
3226 &try_period_size, &try_buffer_size, 0, NULL, NULL,
3227 TRUE))) {
3228 p->supported = FALSE;
3229 break;
3230 }
3231 }
3232
3233 if (p->input_mappings && p->supported)
3234 PA_IDXSET_FOREACH(m, p->input_mappings, idx) {
3235
3236 if (m->input_pcm)
3237 continue;
3238
3239 pa_log_debug("Checking for recording on %s (%s)", m->description, m->name);
3240 try_map = m->channel_map;
3241 try_ss = *ss;
3242 try_ss.channels = try_map.channels;
3243
3244 try_period_size =
3245 pa_usec_to_bytes(default_fragment_size_msec*PA_USEC_PER_MSEC, &try_ss) /
3246 pa_frame_size(&try_ss);
3247 try_buffer_size = default_n_fragments * try_period_size;
3248
3249 if (!(m ->input_pcm = pa_alsa_open_by_template(
3250 m->device_strings,
3251 dev_id,
3252 NULL,
3253 &try_ss, &try_map,
3254 SND_PCM_STREAM_CAPTURE,
3255 &try_period_size, &try_buffer_size, 0, NULL, NULL,
3256 TRUE))) {
3257 p->supported = FALSE;
3258 break;
3259 }
3260 }
3261
3262 last = p;
3263
3264 if (p->supported)
3265 pa_log_debug("Profile %s supported.", p->name);
3266 }
3267
3268 /* Clean up */
3269 if (last) {
3270 uint32_t idx;
3271
3272 if (last->output_mappings)
3273 PA_IDXSET_FOREACH(m, last->output_mappings, idx)
3274 if (m->output_pcm) {
3275
3276 if (last->supported)
3277 m->supported++;
3278
3279 snd_pcm_close(m->output_pcm);
3280 m->output_pcm = NULL;
3281 }
3282
3283 if (last->input_mappings)
3284 PA_IDXSET_FOREACH(m, last->input_mappings, idx)
3285 if (m->input_pcm) {
3286
3287 if (last->supported)
3288 m->supported++;
3289
3290 snd_pcm_close(m->input_pcm);
3291 m->input_pcm = NULL;
3292 }
3293 }
3294
3295 PA_HASHMAP_FOREACH(p, ps->profiles, state)
3296 if (!p->supported) {
3297 pa_hashmap_remove(ps->profiles, p->name);
3298 profile_free(p);
3299 }
3300
3301 PA_HASHMAP_FOREACH(m, ps->mappings, state)
3302 if (m->supported <= 0) {
3303 pa_hashmap_remove(ps->mappings, m->name);
3304 mapping_free(m);
3305 }
3306
3307 ps->probed = TRUE;
3308 }
3309
3310 void pa_alsa_profile_set_dump(pa_alsa_profile_set *ps) {
3311 pa_alsa_profile *p;
3312 pa_alsa_mapping *m;
3313 void *state;
3314
3315 pa_assert(ps);
3316
3317 pa_log_debug("Profile set %p, auto_profiles=%s, probed=%s, n_mappings=%u, n_profiles=%u",
3318 (void*)
3319 ps,
3320 pa_yes_no(ps->auto_profiles),
3321 pa_yes_no(ps->probed),
3322 pa_hashmap_size(ps->mappings),
3323 pa_hashmap_size(ps->profiles));
3324
3325 PA_HASHMAP_FOREACH(m, ps->mappings, state)
3326 pa_alsa_mapping_dump(m);
3327
3328 PA_HASHMAP_FOREACH(p, ps->profiles, state)
3329 pa_alsa_profile_dump(p);
3330 }
3331
3332 void pa_alsa_add_ports(pa_hashmap **p, pa_alsa_path_set *ps) {
3333 pa_alsa_path *path;
3334
3335 pa_assert(p);
3336 pa_assert(!*p);
3337 pa_assert(ps);
3338
3339 /* if there is no path, we don't want a port list */
3340 if (!ps->paths)
3341 return;
3342
3343 if (!ps->paths->next){
3344 pa_alsa_setting *s;
3345
3346 /* If there is only one path, but no or only one setting, then
3347 * we want a port list either */
3348 if (!ps->paths->settings || !ps->paths->settings->next)
3349 return;
3350
3351 /* Ok, there is only one path, however with multiple settings,
3352 * so let's create a port for each setting */
3353 *p = pa_hashmap_new(pa_idxset_string_hash_func, pa_idxset_string_compare_func);
3354
3355 PA_LLIST_FOREACH(s, ps->paths->settings) {
3356 pa_device_port *port;
3357 pa_alsa_port_data *data;
3358
3359 port = pa_device_port_new(s->name, s->description, sizeof(pa_alsa_port_data));
3360 port->priority = s->priority;
3361
3362 data = PA_DEVICE_PORT_DATA(port);
3363 data->path = ps->paths;
3364 data->setting = s;
3365
3366 pa_hashmap_put(*p, port->name, port);
3367 }
3368
3369 } else {
3370
3371 /* We have multiple paths, so let's create a port for each
3372 * one, and each of each settings */
3373 *p = pa_hashmap_new(pa_idxset_string_hash_func, pa_idxset_string_compare_func);
3374
3375 PA_LLIST_FOREACH(path, ps->paths) {
3376
3377 if (!path->settings || !path->settings->next) {
3378 pa_device_port *port;
3379 pa_alsa_port_data *data;
3380
3381 /* If there is no or just one setting we only need a
3382 * single entry */
3383
3384 port = pa_device_port_new(path->name, path->description, sizeof(pa_alsa_port_data));
3385 port->priority = path->priority * 100;
3386
3387
3388 data = PA_DEVICE_PORT_DATA(port);
3389 data->path = path;
3390 data->setting = path->settings;
3391
3392 pa_hashmap_put(*p, port->name, port);
3393 } else {
3394 pa_alsa_setting *s;
3395
3396 PA_LLIST_FOREACH(s, path->settings) {
3397 pa_device_port *port;
3398 pa_alsa_port_data *data;
3399 char *n, *d;
3400
3401 n = pa_sprintf_malloc("%s;%s", path->name, s->name);
3402
3403 if (s->description[0])
3404 d = pa_sprintf_malloc(_("%s / %s"), path->description, s->description);
3405 else
3406 d = pa_xstrdup(path->description);
3407
3408 port = pa_device_port_new(n, d, sizeof(pa_alsa_port_data));
3409 port->priority = path->priority * 100 + s->priority;
3410
3411 pa_xfree(n);
3412 pa_xfree(d);
3413
3414 data = PA_DEVICE_PORT_DATA(port);
3415 data->path = path;
3416 data->setting = s;
3417
3418 pa_hashmap_put(*p, port->name, port);
3419 }
3420 }
3421 }
3422 }
3423
3424 pa_log_debug("Added %u ports", pa_hashmap_size(*p));
3425 }