code.delx.au - pulseaudio/blob - src/modules/alsa/module-alsa-card.c

   1 /***
   2   This file is part of PulseAudio.
   3
   4   Copyright 2009 Lennart Poettering
   5
   6   PulseAudio is free software; you can redistribute it and/or modify
   7   it under the terms of the GNU Lesser General Public License as published
   8   by the Free Software Foundation; either version 2.1 of the License,
   9   or (at your option) any later version.
  10
  11   PulseAudio is distributed in the hope that it will be useful, but
  12   WITHOUT ANY WARRANTY; without even the implied warranty of
  13   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  14   General Public License for more details.
  15
  16   You should have received a copy of the GNU Lesser General Public License
  17   along with PulseAudio; if not, write to the Free Software
  18   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
  19   USA.
  20 ***/
  21
  22 #ifdef HAVE_CONFIG_H
  23 #include <config.h>
  24 #endif
  25
  26 #include <pulse/xmalloc.h>
  27
  28 #include <pulsecore/core-util.h>
  29 #include <pulsecore/i18n.h>
  30 #include <pulsecore/modargs.h>
  31 #include <pulsecore/queue.h>
  32
  33 #include <modules/reserve-wrap.h>
  34
  35 #ifdef HAVE_UDEV
  36 #include <modules/udev-util.h>
  37 #endif
  38
  39 #include "alsa-util.h"
  40 #include "alsa-ucm.h"
  41 #include "alsa-sink.h"
  42 #include "alsa-source.h"
  43 #include "module-alsa-card-symdef.h"
  44
  45 PA_MODULE_AUTHOR("Lennart Poettering");
  46 PA_MODULE_DESCRIPTION("ALSA Card");
  47 PA_MODULE_VERSION(PACKAGE_VERSION);
  48 PA_MODULE_LOAD_ONCE(FALSE);
  49 PA_MODULE_USAGE(
  50         "name=<name for the card/sink/source, to be prefixed> "
  51         "card_name=<name for the card> "
  52         "card_properties=<properties for the card> "
  53         "sink_name=<name for the sink> "
  54         "sink_properties=<properties for the sink> "
  55         "source_name=<name for the source> "
  56         "source_properties=<properties for the source> "
  57         "namereg_fail=<when false attempt to synthesise new names if they are already taken> "
  58         "device_id=<ALSA card index> "
  59         "format=<sample format> "
  60         "rate=<sample rate> "
  61         "fragments=<number of fragments> "
  62         "fragment_size=<fragment size> "
  63         "mmap=<enable memory mapping?> "
  64         "tsched=<enable system timer based scheduling mode?> "
  65         "tsched_buffer_size=<buffer size when using timer based scheduling> "
  66         "tsched_buffer_watermark=<lower fill watermark> "
  67         "profile=<profile name> "
  68         "fixed_latency_range=<disable latency range changes on underrun?> "
  69         "ignore_dB=<ignore dB information from the device?> "
  70         "deferred_volume=<Synchronize software and hardware volume changes to avoid momentary jumps?> "
  71         "profile_set=<profile set configuration file> "
  72         "paths_dir=<directory containing the path configuration files> "
  73         "use_ucm=<load use case manager> "
  74 );
  75
  76 static const char* const valid_modargs[] = {
  77     "name",
  78     "card_name",
  79     "card_properties",
  80     "sink_name",
  81     "sink_properties",
  82     "source_name",
  83     "source_properties",
  84     "namereg_fail",
  85     "device_id",
  86     "format",
  87     "rate",
  88     "fragments",
  89     "fragment_size",
  90     "mmap",
  91     "tsched",
  92     "tsched_buffer_size",
  93     "tsched_buffer_watermark",
  94     "fixed_latency_range",
  95     "profile",
  96     "ignore_dB",
  97     "deferred_volume",
  98     "profile_set",
  99     "paths_dir",
 100     "use_ucm",
 101     NULL
 102 };
 103
 104 #define DEFAULT_DEVICE_ID "0"
 105
 106 struct userdata {
 107     pa_core *core;
 108     pa_module *module;
 109
 110     char *device_id;
 111     int alsa_card_index;
 112
 113     snd_mixer_t *mixer_handle;
 114     snd_hctl_t *hctl_handle;
 115     pa_hashmap *jacks;
 116     pa_alsa_fdlist *mixer_fdl;
 117
 118     pa_card *card;
 119
 120     pa_modargs *modargs;
 121
 122     pa_alsa_profile_set *profile_set;
 123
 124     /* ucm stuffs */
 125     pa_bool_t use_ucm;
 126     pa_alsa_ucm_config ucm;
 127 };
 128
 129 struct profile_data {
 130     pa_alsa_profile *profile;
 131 };
 132
 133 static void add_profiles(struct userdata *u, pa_hashmap *h, pa_hashmap *ports) {
 134     pa_alsa_profile *ap;
 135     void *state;
 136
 137     pa_assert(u);
 138     pa_assert(h);
 139
 140     PA_HASHMAP_FOREACH(ap, u->profile_set->profiles, state) {
 141         struct profile_data *d;
 142         pa_card_profile *cp;
 143         pa_alsa_mapping *m;
 144         uint32_t idx;
 145
 146         cp = pa_card_profile_new(ap->name, ap->description, sizeof(struct profile_data));
 147         cp->priority = ap->priority;
 148
 149         if (ap->output_mappings) {
 150             cp->n_sinks = pa_idxset_size(ap->output_mappings);
 151
 152             PA_IDXSET_FOREACH(m, ap->output_mappings, idx) {
 153                 if (u->use_ucm)
 154                     pa_alsa_ucm_add_ports_combination(NULL, &m->ucm_context, TRUE, ports, cp, u->core);
 155                 else
 156                     pa_alsa_path_set_add_ports(m->output_path_set, cp, ports, NULL, u->core);
 157                 if (m->channel_map.channels > cp->max_sink_channels)
 158                     cp->max_sink_channels = m->channel_map.channels;
 159             }
 160         }
 161
 162         if (ap->input_mappings) {
 163             cp->n_sources = pa_idxset_size(ap->input_mappings);
 164
 165             PA_IDXSET_FOREACH(m, ap->input_mappings, idx) {
 166                 if (u->use_ucm)
 167                     pa_alsa_ucm_add_ports_combination(NULL, &m->ucm_context, FALSE, ports, cp, u->core);
 168                 else
 169                     pa_alsa_path_set_add_ports(m->input_path_set, cp, ports, NULL, u->core);
 170                 if (m->channel_map.channels > cp->max_source_channels)
 171                     cp->max_source_channels = m->channel_map.channels;
 172             }
 173         }
 174
 175         d = PA_CARD_PROFILE_DATA(cp);
 176         d->profile = ap;
 177
 178         pa_hashmap_put(h, cp->name, cp);
 179     }
 180 }
 181
 182 static void add_disabled_profile(pa_hashmap *profiles) {
 183     pa_card_profile *p;
 184     struct profile_data *d;
 185
 186     p = pa_card_profile_new("off", _("Off"), sizeof(struct profile_data));
 187
 188     d = PA_CARD_PROFILE_DATA(p);
 189     d->profile = NULL;
 190
 191     pa_hashmap_put(profiles, p->name, p);
 192 }
 193
 194 static int card_set_profile(pa_card *c, pa_card_profile *new_profile) {
 195     struct userdata *u;
 196     struct profile_data *nd, *od;
 197     uint32_t idx;
 198     pa_alsa_mapping *am;
 199     pa_queue *sink_inputs = NULL, *source_outputs = NULL;
 200
 201     pa_assert(c);
 202     pa_assert(new_profile);
 203     pa_assert_se(u = c->userdata);
 204
 205     nd = PA_CARD_PROFILE_DATA(new_profile);
 206     od = PA_CARD_PROFILE_DATA(c->active_profile);
 207
 208     if (od->profile && od->profile->output_mappings)
 209         PA_IDXSET_FOREACH(am, od->profile->output_mappings, idx) {
 210             if (!am->sink)
 211                 continue;
 212
 213             if (nd->profile &&
 214                 nd->profile->output_mappings &&
 215                 pa_idxset_get_by_data(nd->profile->output_mappings, am, NULL))
 216                 continue;
 217
 218             sink_inputs = pa_sink_move_all_start(am->sink, sink_inputs);
 219             pa_alsa_sink_free(am->sink);
 220             am->sink = NULL;
 221         }
 222
 223     if (od->profile && od->profile->input_mappings)
 224         PA_IDXSET_FOREACH(am, od->profile->input_mappings, idx) {
 225             if (!am->source)
 226                 continue;
 227
 228             if (nd->profile &&
 229                 nd->profile->input_mappings &&
 230                 pa_idxset_get_by_data(nd->profile->input_mappings, am, NULL))
 231                 continue;
 232
 233             source_outputs = pa_source_move_all_start(am->source, source_outputs);
 234             pa_alsa_source_free(am->source);
 235             am->source = NULL;
 236         }
 237
 238     /* if UCM is available for this card then update the verb */
 239     if (u->use_ucm) {
 240         if (pa_alsa_ucm_set_profile(&u->ucm, nd->profile ? nd->profile->name : NULL,
 241                     od->profile ? od->profile->name : NULL) < 0)
 242             return -1;
 243     }
 244
 245     if (nd->profile && nd->profile->output_mappings)
 246         PA_IDXSET_FOREACH(am, nd->profile->output_mappings, idx) {
 247
 248             if (!am->sink)
 249                 am->sink = pa_alsa_sink_new(c->module, u->modargs, __FILE__, c, am);
 250
 251             if (sink_inputs && am->sink) {
 252                 pa_sink_move_all_finish(am->sink, sink_inputs, FALSE);
 253                 sink_inputs = NULL;
 254             }
 255         }
 256
 257     if (nd->profile && nd->profile->input_mappings)
 258         PA_IDXSET_FOREACH(am, nd->profile->input_mappings, idx) {
 259
 260             if (!am->source)
 261                 am->source = pa_alsa_source_new(c->module, u->modargs, __FILE__, c, am);
 262
 263             if (source_outputs && am->source) {
 264                 pa_source_move_all_finish(am->source, source_outputs, FALSE);
 265                 source_outputs = NULL;
 266             }
 267         }
 268
 269     if (sink_inputs)
 270         pa_sink_move_all_fail(sink_inputs);
 271
 272     if (source_outputs)
 273         pa_source_move_all_fail(source_outputs);
 274
 275     return 0;
 276 }
 277
 278 static void init_profile(struct userdata *u) {
 279     uint32_t idx;
 280     pa_alsa_mapping *am;
 281     struct profile_data *d;
 282     pa_alsa_ucm_config *ucm = &u->ucm;
 283
 284     pa_assert(u);
 285
 286     d = PA_CARD_PROFILE_DATA(u->card->active_profile);
 287
 288     if (d->profile && u->use_ucm) {
 289         /* Set initial verb */
 290         if (pa_alsa_ucm_set_profile(ucm, d->profile->name, NULL) < 0) {
 291             pa_log("Failed to set ucm profile %s", d->profile->name);
 292             return;
 293         }
 294     }
 295
 296     if (d->profile && d->profile->output_mappings)
 297         PA_IDXSET_FOREACH(am, d->profile->output_mappings, idx)
 298             am->sink = pa_alsa_sink_new(u->module, u->modargs, __FILE__, u->card, am);
 299
 300     if (d->profile && d->profile->input_mappings)
 301         PA_IDXSET_FOREACH(am, d->profile->input_mappings, idx)
 302             am->source = pa_alsa_source_new(u->module, u->modargs, __FILE__, u->card, am);
 303 }
 304
 305 static void report_port_state(pa_device_port *p, struct userdata *u)
 306 {
 307     void *state;
 308     pa_alsa_jack *jack;
 309     pa_port_available_t pa = PA_PORT_AVAILABLE_UNKNOWN;
 310     pa_device_port *port;
 311
 312     PA_HASHMAP_FOREACH(jack, u->jacks, state) {
 313         pa_port_available_t cpa;
 314
 315         if (u->use_ucm)
 316             port = pa_hashmap_get(u->card->ports, jack->name);
 317         else {
 318             if (jack->path)
 319                 port = jack->path->port;
 320             else
 321                 continue;
 322         }
 323
 324         if (p != port)
 325             continue;
 326
 327         cpa = jack->plugged_in ? jack->state_plugged : jack->state_unplugged;
 328
 329         /* "Yes" and "no" trumphs "unknown" if we have more than one jack */
 330         if (cpa == PA_PORT_AVAILABLE_UNKNOWN)
 331             continue;
 332
 333         if ((cpa == PA_PORT_AVAILABLE_NO && pa == PA_PORT_AVAILABLE_YES) ||
 334             (pa == PA_PORT_AVAILABLE_NO && cpa == PA_PORT_AVAILABLE_YES))
 335             pa_log_warn("Availability of port '%s' is inconsistent!", p->name);
 336         else
 337             pa = cpa;
 338     }
 339
 340     pa_device_port_set_available(p, pa);
 341 }
 342
 343 static int report_jack_state(snd_hctl_elem_t *elem, unsigned int mask)
 344 {
 345     struct userdata *u = snd_hctl_elem_get_callback_private(elem);
 346     snd_ctl_elem_value_t *elem_value;
 347     pa_bool_t plugged_in;
 348     void *state;
 349     pa_alsa_jack *jack;
 350     pa_device_port *port;
 351
 352     pa_assert(u);
 353
 354     if (mask == SND_CTL_EVENT_MASK_REMOVE)
 355         return 0;
 356
 357     snd_ctl_elem_value_alloca(&elem_value);
 358     if (snd_hctl_elem_read(elem, elem_value) < 0) {
 359         pa_log_warn("Failed to read jack detection from '%s'", pa_strnull(snd_hctl_elem_get_name(elem)));
 360         return 0;
 361     }
 362
 363     plugged_in = !!snd_ctl_elem_value_get_boolean(elem_value, 0);
 364
 365     pa_log_debug("Jack '%s' is now %s", pa_strnull(snd_hctl_elem_get_name(elem)), plugged_in ? "plugged in" : "unplugged");
 366
 367     PA_HASHMAP_FOREACH(jack, u->jacks, state)
 368         if (jack->hctl_elem == elem) {
 369             jack->plugged_in = plugged_in;
 370             if (u->use_ucm) {
 371                 pa_assert(u->card->ports);
 372                 port = pa_hashmap_get(u->card->ports, jack->name);
 373                 pa_assert(port);
 374             }
 375             else {
 376                 pa_assert(jack->path && jack->path->port);
 377                 port = jack->path->port;
 378             }
 379             report_port_state(port, u);
 380         }
 381     return 0;
 382 }
 383
 384 static void init_jacks(struct userdata *u) {
 385     void *state;
 386     pa_alsa_path* path;
 387     pa_alsa_jack* jack;
 388
 389     u->jacks = pa_hashmap_new(pa_idxset_trivial_hash_func, pa_idxset_trivial_compare_func);
 390
 391     if (u->use_ucm) {
 392         PA_LLIST_FOREACH(jack, u->ucm.jacks)
 393             if (jack->has_control)
 394                 pa_hashmap_put(u->jacks, jack, jack);
 395     } else {
 396         /* See if we have any jacks */
 397         if (u->profile_set->output_paths)
 398             PA_HASHMAP_FOREACH(path, u->profile_set->output_paths, state)
 399                 PA_LLIST_FOREACH(jack, path->jacks)
 400                     if (jack->has_control)
 401                         pa_hashmap_put(u->jacks, jack, jack);
 402
 403         if (u->profile_set->input_paths)
 404             PA_HASHMAP_FOREACH(path, u->profile_set->input_paths, state)
 405                 PA_LLIST_FOREACH(jack, path->jacks)
 406                     if (jack->has_control)
 407                         pa_hashmap_put(u->jacks, jack, jack);
 408     }
 409
 410     pa_log_debug("Found %d jacks.", pa_hashmap_size(u->jacks));
 411
 412     if (pa_hashmap_size(u->jacks) == 0)
 413         return;
 414
 415     u->mixer_fdl = pa_alsa_fdlist_new();
 416
 417     u->mixer_handle = pa_alsa_open_mixer(u->alsa_card_index, NULL, &u->hctl_handle);
 418     if (u->mixer_handle && pa_alsa_fdlist_set_handle(u->mixer_fdl, NULL, u->hctl_handle, u->core->mainloop) >= 0) {
 419         PA_HASHMAP_FOREACH(jack, u->jacks, state) {
 420             jack->hctl_elem = pa_alsa_find_jack(u->hctl_handle, jack->alsa_name);
 421             if (!jack->hctl_elem) {
 422                 pa_log_warn("Jack '%s' seems to have disappeared.", jack->alsa_name);
 423                 jack->has_control = FALSE;
 424                 continue;
 425             }
 426             snd_hctl_elem_set_callback_private(jack->hctl_elem, u);
 427             snd_hctl_elem_set_callback(jack->hctl_elem, report_jack_state);
 428             report_jack_state(jack->hctl_elem, 0);
 429         }
 430
 431     } else
 432         pa_log("Failed to open hctl/mixer for jack detection");
 433
 434 }
 435
 436 static void set_card_name(pa_card_new_data *data, pa_modargs *ma, const char *device_id) {
 437     char *t;
 438     const char *n;
 439
 440     pa_assert(data);
 441     pa_assert(ma);
 442     pa_assert(device_id);
 443
 444     if ((n = pa_modargs_get_value(ma, "card_name", NULL))) {
 445         pa_card_new_data_set_name(data, n);
 446         data->namereg_fail = TRUE;
 447         return;
 448     }
 449
 450     if ((n = pa_modargs_get_value(ma, "name", NULL)))
 451         data->namereg_fail = TRUE;
 452     else {
 453         n = device_id;
 454         data->namereg_fail = FALSE;
 455     }
 456
 457     t = pa_sprintf_malloc("alsa_card.%s", n);
 458     pa_card_new_data_set_name(data, t);
 459     pa_xfree(t);
 460 }
 461
 462 int pa__init(pa_module *m) {
 463     pa_card_new_data data;
 464     pa_modargs *ma;
 465     pa_bool_t ignore_dB = FALSE;
 466     struct userdata *u;
 467     pa_reserve_wrapper *reserve = NULL;
 468     const char *description;
 469     const char *profile = NULL;
 470     char *fn = NULL;
 471     pa_bool_t namereg_fail = FALSE;
 472
 473     pa_alsa_refcnt_inc();
 474
 475     pa_assert(m);
 476
 477     if (!(ma = pa_modargs_new(m->argument, valid_modargs))) {
 478         pa_log("Failed to parse module arguments");
 479         goto fail;
 480     }
 481
 482     if (pa_modargs_get_value_boolean(ma, "ignore_dB", &ignore_dB) < 0) {
 483         pa_log("Failed to parse ignore_dB argument.");
 484         goto fail;
 485     }
 486
 487     m->userdata = u = pa_xnew0(struct userdata, 1);
 488     u->core = m->core;
 489     u->module = m;
 490     u->device_id = pa_xstrdup(pa_modargs_get_value(ma, "device_id", DEFAULT_DEVICE_ID));
 491     u->modargs = ma;
 492
 493     u->use_ucm = TRUE;
 494     u->ucm.core = m->core;
 495
 496     if ((u->alsa_card_index = snd_card_get_index(u->device_id)) < 0) {
 497         pa_log("Card '%s' doesn't exist: %s", u->device_id, pa_alsa_strerror(u->alsa_card_index));
 498         goto fail;
 499     }
 500
 501     if (!pa_in_system_mode()) {
 502         char *rname;
 503
 504         if ((rname = pa_alsa_get_reserve_name(u->device_id))) {
 505             reserve = pa_reserve_wrapper_get(m->core, rname);
 506             pa_xfree(rname);
 507
 508             if (!reserve)
 509                 goto fail;
 510         }
 511     }
 512
 513     pa_modargs_get_value_boolean(ma, "use_ucm", &u->use_ucm);
 514     if (u->use_ucm && !pa_alsa_ucm_query_profiles(&u->ucm, u->alsa_card_index)) {
 515         pa_log_info("Found UCM profiles");
 516
 517         u->profile_set = pa_alsa_ucm_add_profile_set(&u->ucm, &u->core->default_channel_map);
 518     }
 519     else {
 520         u->use_ucm = FALSE;
 521 #ifdef HAVE_UDEV
 522         fn = pa_udev_get_property(u->alsa_card_index, "PULSE_PROFILE_SET");
 523 #endif
 524
 525         if (pa_modargs_get_value(ma, "profile_set", NULL)) {
 526             pa_xfree(fn);
 527             fn = pa_xstrdup(pa_modargs_get_value(ma, "profile_set", NULL));
 528         }
 529
 530         u->profile_set = pa_alsa_profile_set_new(fn, &u->core->default_channel_map);
 531         pa_xfree(fn);
 532     }
 533
 534     u->profile_set->ignore_dB = ignore_dB;
 535
 536     if (!u->profile_set)
 537         goto fail;
 538
 539     pa_alsa_profile_set_probe(u->profile_set, u->device_id, &m->core->default_sample_spec, m->core->default_n_fragments, m->core->default_fragment_size_msec);
 540     pa_alsa_profile_set_dump(u->profile_set);
 541
 542     pa_card_new_data_init(&data);
 543     data.driver = __FILE__;
 544     data.module = m;
 545
 546     pa_alsa_init_proplist_card(m->core, data.proplist, u->alsa_card_index);
 547
 548     pa_proplist_sets(data.proplist, PA_PROP_DEVICE_STRING, u->device_id);
 549     pa_alsa_init_description(data.proplist);
 550     set_card_name(&data, ma, u->device_id);
 551
 552     /* We need to give pa_modargs_get_value_boolean() a pointer to a local
 553      * variable instead of using &data.namereg_fail directly, because
 554      * data.namereg_fail is a bitfield and taking the address of a bitfield
 555      * variable is impossible. */
 556     namereg_fail = data.namereg_fail;
 557     if (pa_modargs_get_value_boolean(ma, "namereg_fail", &namereg_fail) < 0) {
 558         pa_log("Failed to parse namereg_fail argument.");
 559         pa_card_new_data_done(&data);
 560         goto fail;
 561     }
 562     data.namereg_fail = namereg_fail;
 563
 564     if (reserve)
 565         if ((description = pa_proplist_gets(data.proplist, PA_PROP_DEVICE_DESCRIPTION)))
 566             pa_reserve_wrapper_set_application_device_name(reserve, description);
 567
 568     add_profiles(u, data.profiles, data.ports);
 569
 570     if (pa_hashmap_isempty(data.profiles)) {
 571         pa_log("Failed to find a working profile.");
 572         pa_card_new_data_done(&data);
 573         goto fail;
 574     }
 575
 576     add_disabled_profile(data.profiles);
 577
 578     if (pa_modargs_get_proplist(ma, "card_properties", data.proplist, PA_UPDATE_REPLACE) < 0) {
 579         pa_log("Invalid properties");
 580         pa_card_new_data_done(&data);
 581         goto fail;
 582     }
 583
 584     if ((profile = pa_modargs_get_value(ma, "profile", NULL)))
 585         pa_card_new_data_set_profile(&data, profile);
 586
 587     u->card = pa_card_new(m->core, &data);
 588     pa_card_new_data_done(&data);
 589
 590     if (!u->card)
 591         goto fail;
 592
 593     u->card->userdata = u;
 594     u->card->set_profile = card_set_profile;
 595
 596     init_profile(u);
 597     init_jacks(u);
 598
 599     if (reserve)
 600         pa_reserve_wrapper_unref(reserve);
 601
 602     if (!pa_hashmap_isempty(u->profile_set->decibel_fixes))
 603         pa_log_warn("Card %s uses decibel fixes (i.e. overrides the decibel information for some alsa volume elements). "
 604                     "Please note that this feature is meant just as a help for figuring out the correct decibel values. "
 605                     "PulseAudio is not the correct place to maintain the decibel mappings! The fixed decibel values "
 606                     "should be sent to ALSA developers so that they can fix the driver. If it turns out that this feature "
 607                     "is abused (i.e. fixes are not pushed to ALSA), the decibel fix feature may be removed in some future "
 608                     "PulseAudio version.", u->card->name);
 609
 610     return 0;
 611
 612 fail:
 613     if (reserve)
 614         pa_reserve_wrapper_unref(reserve);
 615
 616     pa__done(m);
 617
 618     return -1;
 619 }
 620
 621 int pa__get_n_used(pa_module *m) {
 622     struct userdata *u;
 623     int n = 0;
 624     uint32_t idx;
 625     pa_sink *sink;
 626     pa_source *source;
 627
 628     pa_assert(m);
 629     pa_assert_se(u = m->userdata);
 630     pa_assert(u->card);
 631
 632     PA_IDXSET_FOREACH(sink, u->card->sinks, idx)
 633         n += pa_sink_linked_by(sink);
 634
 635     PA_IDXSET_FOREACH(source, u->card->sources, idx)
 636         n += pa_source_linked_by(source);
 637
 638     return n;
 639 }
 640
 641 void pa__done(pa_module*m) {
 642     struct userdata *u;
 643
 644     pa_assert(m);
 645
 646     if (!(u = m->userdata))
 647         goto finish;
 648
 649     if (u->mixer_fdl)
 650         pa_alsa_fdlist_free(u->mixer_fdl);
 651     if (u->mixer_handle)
 652         snd_mixer_close(u->mixer_handle);
 653     if (u->jacks)
 654         pa_hashmap_free(u->jacks, NULL, NULL);
 655
 656     if (u->card && u->card->sinks) {
 657         pa_sink *s;
 658
 659         while ((s = pa_idxset_steal_first(u->card->sinks, NULL)))
 660             pa_alsa_sink_free(s);
 661     }
 662
 663     if (u->card && u->card->sources) {
 664         pa_source *s;
 665
 666         while ((s = pa_idxset_steal_first(u->card->sources, NULL)))
 667             pa_alsa_source_free(s);
 668     }
 669
 670     if (u->card)
 671         pa_card_free(u->card);
 672
 673     if (u->modargs)
 674         pa_modargs_free(u->modargs);
 675
 676     if (u->profile_set)
 677         pa_alsa_profile_set_free(u->profile_set);
 678
 679     pa_alsa_ucm_free(&u->ucm);
 680
 681     pa_xfree(u->device_id);
 682     pa_xfree(u);
 683
 684 finish:
 685     pa_alsa_refcnt_dec();
 686 }