code.delx.au - pulseaudio/blob - src/modules/bluetooth/bluetooth-util.c

   1 /***
   2   This file is part of PulseAudio.
   3
   4   Copyright 2008 Joao Paulo Rechi Vita
   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
   8   published by the Free Software Foundation; either version 2.1 of the
   9   License, 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
  17   License 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 <pulsecore/core-util.h>
  27 #include <pulsecore/shared.h>
  28 #include <modules/dbus-util.h>
  29
  30 #include "bluetooth-util.h"
  31
  32 struct pa_bluetooth_discovery {
  33     PA_REFCNT_DECLARE;
  34
  35     pa_core *core;
  36     pa_dbus_connection *connection;
  37     PA_LLIST_HEAD(pa_dbus_pending, pending);
  38     pa_hashmap *devices;
  39     pa_hook hook;
  40 };
  41
  42 static pa_bluetooth_uuid *uuid_new(const char *uuid) {
  43     pa_bluetooth_uuid *u;
  44
  45     u = pa_xnew(pa_bluetooth_uuid, 1);
  46     u->uuid = pa_xstrdup(uuid);
  47     PA_LLIST_INIT(pa_bluetooth_uuid, u);
  48
  49     return u;
  50 }
  51
  52 static void uuid_free(pa_bluetooth_uuid *u) {
  53     pa_assert(u);
  54
  55     pa_xfree(u->uuid);
  56     pa_xfree(u);
  57 }
  58
  59 static pa_bluetooth_device* device_new(const char *path) {
  60     pa_bluetooth_device *d;
  61
  62     d = pa_xnew(pa_bluetooth_device, 1);
  63
  64     d->dead = FALSE;
  65
  66     d->device_info_valid = d->audio_sink_info_valid = d->headset_info_valid = 0;
  67
  68     d->name = NULL;
  69     d->path = pa_xstrdup(path);
  70     d->paired = -1;
  71     d->alias = NULL;
  72     d->device_connected = -1;
  73     PA_LLIST_HEAD_INIT(pa_bluetooth_uuid, d->uuids);
  74     d->address = NULL;
  75     d->class = -1;
  76     d->trusted = -1;
  77
  78     d->audio_sink_connected = -1;
  79
  80     d->headset_connected = -1;
  81
  82     return d;
  83 }
  84
  85 static void device_free(pa_bluetooth_device *d) {
  86     pa_bluetooth_uuid *u;
  87
  88     pa_assert(d);
  89
  90     while ((u = d->uuids)) {
  91         PA_LLIST_REMOVE(pa_bluetooth_uuid, d->uuids, u);
  92         uuid_free(u);
  93     }
  94
  95     pa_xfree(d->name);
  96     pa_xfree(d->path);
  97     pa_xfree(d->alias);
  98     pa_xfree(d->address);
  99     pa_xfree(d);
 100 }
 101
 102 static pa_bool_t device_is_loaded(pa_bluetooth_device *d) {
 103     pa_assert(d);
 104
 105     return
 106         d->device_info_valid &&
 107         d->audio_sink_info_valid &&
 108         d->headset_info_valid;
 109 }
 110
 111 static pa_bool_t device_is_audio(pa_bluetooth_device *d) {
 112     pa_assert(d);
 113
 114     pa_assert(d->device_info_valid);
 115     pa_assert(d->audio_sink_info_valid);
 116     pa_assert(d->headset_info_valid);
 117
 118     return
 119         d->device_info_valid > 0 &&
 120         (d->audio_sink_info_valid > 0 || d->headset_info_valid > 0);
 121 }
 122
 123 static int parse_device_property(pa_bluetooth_discovery *y, pa_bluetooth_device *d, DBusMessageIter *i) {
 124     const char *key;
 125     DBusMessageIter variant_i;
 126
 127     pa_assert(y);
 128     pa_assert(d);
 129     pa_assert(i);
 130
 131     if (dbus_message_iter_get_arg_type(i) != DBUS_TYPE_STRING) {
 132         pa_log("Property name not a string.");
 133         return -1;
 134     }
 135
 136     dbus_message_iter_get_basic(i, &key);
 137
 138     if (!dbus_message_iter_next(i))  {
 139         pa_log("Property value missing");
 140         return -1;
 141     }
 142
 143     if (dbus_message_iter_get_arg_type(i) != DBUS_TYPE_VARIANT) {
 144         pa_log("Property value not a variant.");
 145         return -1;
 146     }
 147
 148     dbus_message_iter_recurse(i, &variant_i);
 149
 150 /*     pa_log_debug("Parsing property org.bluez.Device.%s", key); */
 151
 152     switch (dbus_message_iter_get_arg_type(&variant_i)) {
 153
 154         case DBUS_TYPE_STRING: {
 155
 156             const char *value;
 157             dbus_message_iter_get_basic(&variant_i, &value);
 158
 159             if (pa_streq(key, "Name")) {
 160                 pa_xfree(d->name);
 161                 d->name = pa_xstrdup(value);
 162             } else if (pa_streq(key, "Alias")) {
 163                 pa_xfree(d->alias);
 164                 d->alias = pa_xstrdup(value);
 165             } else if (pa_streq(key, "Address")) {
 166                 pa_xfree(d->address);
 167                 d->address = pa_xstrdup(value);
 168             }
 169
 170 /*             pa_log_debug("Value %s", value); */
 171
 172             break;
 173         }
 174
 175         case DBUS_TYPE_BOOLEAN: {
 176
 177             dbus_bool_t value;
 178             dbus_message_iter_get_basic(&variant_i, &value);
 179
 180             if (pa_streq(key, "Paired"))
 181                 d->paired = !!value;
 182             else if (pa_streq(key, "Connected"))
 183                 d->device_connected = !!value;
 184             else if (pa_streq(key, "Trusted"))
 185                 d->trusted = !!value;
 186
 187 /*             pa_log_debug("Value %s", pa_yes_no(value)); */
 188
 189             break;
 190         }
 191
 192         case DBUS_TYPE_UINT32: {
 193
 194             uint32_t value;
 195             dbus_message_iter_get_basic(&variant_i, &value);
 196
 197             if (pa_streq(key, "Class"))
 198                 d->class = (int) value;
 199
 200 /*             pa_log_debug("Value %u", (unsigned) value); */
 201
 202             break;
 203         }
 204
 205         case DBUS_TYPE_ARRAY: {
 206
 207             DBusMessageIter ai;
 208             dbus_message_iter_recurse(&variant_i, &ai);
 209
 210             if (dbus_message_iter_get_arg_type(&ai) == DBUS_TYPE_STRING &&
 211                 pa_streq(key, "UUIDs")) {
 212
 213                 while (dbus_message_iter_get_arg_type(&ai) != DBUS_TYPE_INVALID) {
 214                     pa_bluetooth_uuid *node;
 215                     const char *value;
 216
 217                     dbus_message_iter_get_basic(&ai, &value);
 218                     node = uuid_new(value);
 219                     PA_LLIST_PREPEND(pa_bluetooth_uuid, d->uuids, node);
 220
 221                     if (!dbus_message_iter_next(&ai))
 222                         break;
 223                 }
 224             }
 225
 226             break;
 227         }
 228     }
 229
 230     return 0;
 231 }
 232
 233 static int parse_audio_property(pa_bluetooth_discovery *u, int *connected, DBusMessageIter *i) {
 234     const char *key;
 235     DBusMessageIter variant_i;
 236
 237     pa_assert(u);
 238     pa_assert(connected);
 239     pa_assert(i);
 240
 241     if (dbus_message_iter_get_arg_type(i) != DBUS_TYPE_STRING) {
 242         pa_log("Property name not a string.");
 243         return -1;
 244     }
 245
 246     dbus_message_iter_get_basic(i, &key);
 247
 248     if (!dbus_message_iter_next(i))  {
 249         pa_log("Property value missing");
 250         return -1;
 251     }
 252
 253     if (dbus_message_iter_get_arg_type(i) != DBUS_TYPE_VARIANT) {
 254         pa_log("Property value not a variant.");
 255         return -1;
 256     }
 257
 258     dbus_message_iter_recurse(i, &variant_i);
 259
 260 /*     pa_log_debug("Parsing property org.bluez.{AudioSink|Headset}.%s", key); */
 261
 262     switch (dbus_message_iter_get_arg_type(&variant_i)) {
 263
 264         case DBUS_TYPE_BOOLEAN: {
 265
 266             dbus_bool_t value;
 267             dbus_message_iter_get_basic(&variant_i, &value);
 268
 269             if (pa_streq(key, "Connected"))
 270                 *connected = !!value;
 271
 272 /*             pa_log_debug("Value %s", pa_yes_no(value)); */
 273
 274             break;
 275         }
 276     }
 277
 278     return 0;
 279 }
 280
 281 static void run_callback(pa_bluetooth_discovery *y, pa_bluetooth_device *d, pa_bool_t dead) {
 282     pa_assert(y);
 283     pa_assert(d);
 284
 285     if (!device_is_loaded(d))
 286         return;
 287
 288     if (!device_is_audio(d))
 289         return;
 290
 291     d->dead = dead;
 292     pa_hook_fire(&y->hook, d);
 293 }
 294
 295 static void get_properties_reply(DBusPendingCall *pending, void *userdata) {
 296     DBusMessage *r;
 297     DBusMessageIter arg_i, element_i;
 298     pa_dbus_pending *p;
 299     pa_bluetooth_device *d;
 300     pa_bluetooth_discovery *y;
 301     int valid;
 302
 303     pa_assert_se(p = userdata);
 304     pa_assert_se(y = p->context_data);
 305     pa_assert_se(r = dbus_pending_call_steal_reply(pending));
 306
 307 /*     pa_log_debug("Got %s.GetProperties response for %s", */
 308 /*                  dbus_message_get_interface(p->message), */
 309 /*                  dbus_message_get_path(p->message)); */
 310
 311     d = p->call_data;
 312
 313     valid = dbus_message_get_type(r) == DBUS_MESSAGE_TYPE_ERROR ? -1 : 1;
 314
 315     if (dbus_message_is_method_call(p->message, "org.bluez.Device", "GetProperties"))
 316         d->device_info_valid = valid;
 317     else if (dbus_message_is_method_call(p->message, "org.bluez.Headset", "GetProperties"))
 318         d->headset_info_valid = valid;
 319     else if (dbus_message_is_method_call(p->message, "org.bluez.AudioSink", "GetProperties"))
 320         d->audio_sink_info_valid = valid;
 321
 322     if (dbus_message_get_type(r) == DBUS_MESSAGE_TYPE_ERROR) {
 323
 324         if (!dbus_message_is_error(r, DBUS_ERROR_UNKNOWN_METHOD))
 325             pa_log("Error from GetProperties reply: %s", dbus_message_get_error_name(r));
 326
 327         goto finish;
 328     }
 329
 330     if (!dbus_message_iter_init(r, &arg_i)) {
 331         pa_log("GetProperties reply has no arguments.");
 332         goto finish;
 333     }
 334
 335     if (dbus_message_iter_get_arg_type(&arg_i) != DBUS_TYPE_ARRAY) {
 336         pa_log("GetProperties argument is not an array.");
 337         goto finish;
 338     }
 339
 340     dbus_message_iter_recurse(&arg_i, &element_i);
 341     while (dbus_message_iter_get_arg_type(&element_i) != DBUS_TYPE_INVALID) {
 342
 343         if (dbus_message_iter_get_arg_type(&element_i) == DBUS_TYPE_DICT_ENTRY) {
 344             DBusMessageIter dict_i;
 345
 346             dbus_message_iter_recurse(&element_i, &dict_i);
 347
 348             if (dbus_message_has_interface(p->message, "org.bluez.Device")) {
 349                 if (parse_device_property(y, d, &dict_i) < 0)
 350                     goto finish;
 351
 352             } else if (dbus_message_has_interface(p->message, "org.bluez.Headset")) {
 353                 if (parse_audio_property(y, &d->headset_connected, &dict_i) < 0)
 354                     goto finish;
 355
 356             }  else if (dbus_message_has_interface(p->message, "org.bluez.AudioSink")) {
 357                 if (parse_audio_property(y, &d->audio_sink_connected, &dict_i) < 0)
 358                     goto finish;
 359             }
 360         }
 361
 362         if (!dbus_message_iter_next(&element_i))
 363             break;
 364     }
 365
 366 finish:
 367     run_callback(y, d, FALSE);
 368
 369     dbus_message_unref(r);
 370
 371     PA_LLIST_REMOVE(pa_dbus_pending, y->pending, p);
 372     pa_dbus_pending_free(p);
 373 }
 374
 375 static pa_dbus_pending* send_and_add_to_pending(pa_bluetooth_discovery *y, pa_bluetooth_device *d, DBusMessage *m, DBusPendingCallNotifyFunction func) {
 376     pa_dbus_pending *p;
 377     DBusPendingCall *call;
 378
 379     pa_assert(y);
 380     pa_assert(m);
 381
 382     pa_assert_se(dbus_connection_send_with_reply(pa_dbus_connection_get(y->connection), m, &call, -1));
 383
 384     p = pa_dbus_pending_new(pa_dbus_connection_get(y->connection), m, call, y, d);
 385     PA_LLIST_PREPEND(pa_dbus_pending, y->pending, p);
 386     dbus_pending_call_set_notify(call, func, p, NULL);
 387
 388     return p;
 389 }
 390
 391 static void found_device(pa_bluetooth_discovery *y, const char* path) {
 392     DBusMessage *m;
 393     pa_bluetooth_device *d;
 394
 395     pa_assert(y);
 396     pa_assert(path);
 397
 398     d = device_new(path);
 399
 400     pa_hashmap_put(y->devices, d->path, d);
 401
 402     pa_assert_se(m = dbus_message_new_method_call("org.bluez", path, "org.bluez.Device", "GetProperties"));
 403     send_and_add_to_pending(y, d, m, get_properties_reply);
 404
 405     pa_assert_se(m = dbus_message_new_method_call("org.bluez", path, "org.bluez.Headset", "GetProperties"));
 406     send_and_add_to_pending(y, d, m, get_properties_reply);
 407
 408     pa_assert_se(m = dbus_message_new_method_call("org.bluez", path, "org.bluez.AudioSink", "GetProperties"));
 409     send_and_add_to_pending(y, d, m, get_properties_reply);
 410 }
 411
 412 static void list_devices_reply(DBusPendingCall *pending, void *userdata) {
 413     DBusError e;
 414     DBusMessage *r;
 415     char **paths = NULL;
 416     int num = -1;
 417     pa_dbus_pending *p;
 418     pa_bluetooth_discovery *y;
 419
 420     pa_assert(pending);
 421
 422     dbus_error_init(&e);
 423
 424     pa_assert_se(p = userdata);
 425     pa_assert_se(y = p->context_data);
 426     pa_assert_se(r = dbus_pending_call_steal_reply(pending));
 427
 428     if (dbus_message_get_type(r) == DBUS_MESSAGE_TYPE_ERROR) {
 429         pa_log("Error from ListDevices reply: %s", dbus_message_get_error_name(r));
 430         goto end;
 431     }
 432
 433     if (!dbus_message_get_args(r, &e, DBUS_TYPE_ARRAY, DBUS_TYPE_OBJECT_PATH, &paths, &num, DBUS_TYPE_INVALID)) {
 434         pa_log("org.bluez.Adapter.ListDevices returned an error: '%s'\n", e.message);
 435         dbus_error_free(&e);
 436     } else {
 437         int i;
 438
 439         for (i = 0; i < num; ++i)
 440             found_device(y, paths[i]);
 441     }
 442
 443 end:
 444     if (paths)
 445         dbus_free_string_array (paths);
 446
 447     dbus_message_unref(r);
 448
 449     PA_LLIST_REMOVE(pa_dbus_pending, y->pending, p);
 450     pa_dbus_pending_free(p);
 451 }
 452
 453 static void found_adapter(pa_bluetooth_discovery *y, const char *path) {
 454     DBusMessage *m;
 455
 456     pa_assert_se(m = dbus_message_new_method_call("org.bluez", path, "org.bluez.Adapter", "ListDevices"));
 457     send_and_add_to_pending(y, NULL, m, list_devices_reply);
 458 }
 459
 460 static void list_adapters_reply(DBusPendingCall *pending, void *userdata) {
 461     DBusError e;
 462     DBusMessage *r;
 463     char **paths = NULL;
 464     int num = -1;
 465     pa_dbus_pending *p;
 466     pa_bluetooth_discovery *y;
 467
 468     pa_assert(pending);
 469
 470     dbus_error_init(&e);
 471
 472     pa_assert_se(p = userdata);
 473     pa_assert_se(y = p->context_data);
 474     pa_assert_se(r = dbus_pending_call_steal_reply(pending));
 475
 476     if (dbus_message_get_type(r) == DBUS_MESSAGE_TYPE_ERROR) {
 477         pa_log("Error from ListAdapters reply: %s", dbus_message_get_error_name(r));
 478         goto end;
 479     }
 480
 481     if (!dbus_message_get_args(r, &e, DBUS_TYPE_ARRAY, DBUS_TYPE_OBJECT_PATH, &paths, &num, DBUS_TYPE_INVALID)) {
 482         pa_log("org.bluez.Manager.ListAdapters returned an error: %s", e.message);
 483         dbus_error_free(&e);
 484     } else {
 485         int i;
 486
 487         for (i = 0; i < num; ++i)
 488             found_adapter(y, paths[i]);
 489     }
 490
 491 end:
 492     if (paths)
 493         dbus_free_string_array (paths);
 494
 495     dbus_message_unref(r);
 496
 497     PA_LLIST_REMOVE(pa_dbus_pending, y->pending, p);
 498     pa_dbus_pending_free(p);
 499 }
 500
 501 static void list_adapters(pa_bluetooth_discovery *y) {
 502     DBusMessage *m;
 503     pa_assert(y);
 504
 505     pa_assert_se(m = dbus_message_new_method_call("org.bluez", "/", "org.bluez.Manager", "ListAdapters"));
 506     send_and_add_to_pending(y, NULL, m, list_adapters_reply);
 507 }
 508
 509 static DBusHandlerResult filter_cb(DBusConnection *bus, DBusMessage *m, void *userdata) {
 510     DBusError err;
 511     pa_bluetooth_discovery *y;
 512
 513     pa_assert(bus);
 514     pa_assert(m);
 515
 516     pa_assert_se(y = userdata);
 517
 518     dbus_error_init(&err);
 519
 520     pa_log_debug("dbus: interface=%s, path=%s, member=%s\n",
 521             dbus_message_get_interface(m),
 522             dbus_message_get_path(m),
 523             dbus_message_get_member(m));
 524
 525     if (dbus_message_is_signal(m, "org.bluez.Adapter", "DeviceRemoved")) {
 526         const char *path;
 527         pa_bluetooth_device *d;
 528
 529         if (!dbus_message_get_args(m, &err, DBUS_TYPE_OBJECT_PATH, &path, DBUS_TYPE_INVALID)) {
 530             pa_log("Failed to parse org.bluez.Adapter.DeviceRemoved: %s", err.message);
 531             goto fail;
 532         }
 533
 534         pa_log_debug("Device %s removed", path);
 535
 536         if ((d = pa_hashmap_remove(y->devices, path))) {
 537             run_callback(y, d, TRUE);
 538             device_free(d);
 539         }
 540
 541         return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
 542
 543     } else if (dbus_message_is_signal(m, "org.bluez.Adapter", "DeviceCreated")) {
 544         const char *path;
 545
 546         if (!dbus_message_get_args(m, &err, DBUS_TYPE_OBJECT_PATH, &path, DBUS_TYPE_INVALID)) {
 547             pa_log("Failed to parse org.bluez.Adapter.DeviceCreated: %s", err.message);
 548             goto fail;
 549         }
 550
 551         pa_log_debug("Device %s created", path);
 552
 553         found_device(y, path);
 554         return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
 555
 556     } else if (dbus_message_is_signal(m, "org.bluez.Manager", "AdapterAdded")) {
 557         const char *path;
 558
 559         if (!dbus_message_get_args(m, &err, DBUS_TYPE_OBJECT_PATH, &path, DBUS_TYPE_INVALID)) {
 560             pa_log("Failed to parse org.bluez.Manager.AdapterAdded: %s", err.message);
 561             goto fail;
 562         }
 563
 564         pa_log_debug("Adapter %s created", path);
 565
 566         found_adapter(y, path);
 567         return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
 568
 569     } else if (dbus_message_is_signal(m, "org.bluez.Headset", "PropertyChanged") ||
 570                dbus_message_is_signal(m, "org.bluez.AudioSink", "PropertyChanged") ||
 571                dbus_message_is_signal(m, "org.bluez.Device", "PropertyChanged")) {
 572
 573         pa_bluetooth_device *d;
 574
 575         if ((d = pa_hashmap_get(y->devices, dbus_message_get_path(m)))) {
 576             DBusMessageIter arg_i;
 577
 578             if (!dbus_message_iter_init(m, &arg_i)) {
 579                 pa_log("Failed to parse PropertyChanged: %s", err.message);
 580                 goto fail;
 581             }
 582
 583             if (dbus_message_has_interface(m, "org.bluez.Device")) {
 584                 if (parse_device_property(y, d, &arg_i) < 0)
 585                     goto fail;
 586
 587             } else if (dbus_message_has_interface(m, "org.bluez.Headset")) {
 588                 if (parse_audio_property(y, &d->headset_connected, &arg_i) < 0)
 589                     goto fail;
 590
 591             }  else if (dbus_message_has_interface(m, "org.bluez.AudioSink")) {
 592                 if (parse_audio_property(y, &d->audio_sink_connected, &arg_i) < 0)
 593                     goto fail;
 594             }
 595
 596             run_callback(y, d, FALSE);
 597         }
 598
 599         return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
 600     }
 601
 602 fail:
 603     dbus_error_free(&err);
 604
 605     return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
 606 }
 607
 608 const pa_bluetooth_device* pa_bluetooth_discovery_get_by_address(pa_bluetooth_discovery *y, const char* address) {
 609     pa_bluetooth_device *d;
 610     void *state = NULL;
 611
 612     pa_assert(y);
 613     pa_assert(PA_REFCNT_VALUE(y) > 0);
 614     pa_assert(address);
 615
 616     if (!pa_hook_is_firing(&y->hook))
 617         pa_bluetooth_discovery_sync(y);
 618
 619     while ((d = pa_hashmap_iterate(y->devices, &state, NULL)))
 620         if (pa_streq(d->address, address))
 621             return d;
 622
 623     return NULL;
 624 }
 625
 626 const pa_bluetooth_device* pa_bluetooth_discovery_get_by_path(pa_bluetooth_discovery *y, const char* path) {
 627     pa_assert(y);
 628     pa_assert(PA_REFCNT_VALUE(y) > 0);
 629     pa_assert(path);
 630
 631     if (!pa_hook_is_firing(&y->hook))
 632         pa_bluetooth_discovery_sync(y);
 633
 634     return pa_hashmap_get(y->devices, path);
 635 }
 636
 637 static int setup_dbus(pa_bluetooth_discovery *y) {
 638     DBusError err;
 639
 640     dbus_error_init(&err);
 641
 642     y->connection = pa_dbus_bus_get(y->core, DBUS_BUS_SYSTEM, &err);
 643
 644     if (dbus_error_is_set(&err) || !y->connection) {
 645         pa_log("Failed to get D-Bus connection: %s", err.message);
 646         dbus_error_free(&err);
 647         return -1;
 648     }
 649
 650     return 0;
 651 }
 652
 653 pa_bluetooth_discovery* pa_bluetooth_discovery_get(pa_core *c) {
 654     DBusError err;
 655     pa_bluetooth_discovery *y;
 656
 657     pa_assert(c);
 658
 659     dbus_error_init(&err);
 660
 661     if ((y = pa_shared_get(c, "bluetooth-discovery")))
 662         return pa_bluetooth_discovery_ref(y);
 663
 664     y = pa_xnew0(pa_bluetooth_discovery, 1);
 665     PA_REFCNT_INIT(y);
 666     y->core = c;
 667     y->devices = pa_hashmap_new(pa_idxset_string_hash_func, pa_idxset_string_compare_func);
 668     PA_LLIST_HEAD_INIT(pa_dbus_pending, y->pending);
 669     pa_hook_init(&y->hook, y);
 670     pa_shared_set(c, "bluetooth-discovery", y);
 671
 672     if (setup_dbus(y) < 0)
 673         goto fail;
 674
 675     /* dynamic detection of bluetooth audio devices */
 676     if (!dbus_connection_add_filter(pa_dbus_connection_get(y->connection), filter_cb, y, NULL)) {
 677         pa_log_error("Failed to add filter function");
 678         goto fail;
 679     }
 680
 681     if (pa_dbus_add_matches(
 682                 pa_dbus_connection_get(y->connection), &err,
 683                 "type='signal',sender='org.bluez',interface='org.bluez.Manager',member='AdapterAdded'",
 684                 "type='signal',sender='org.bluez',interface='org.bluez.Adapter',member='DeviceRemoved'",
 685                 "type='signal',sender='org.bluez',interface='org.bluez.Adapter',member='DeviceCreated'",
 686                 "type='signal',sender='org.bluez',interface='org.bluez.Device',member='PropertyChanged'",
 687                 "type='signal',sender='org.bluez',interface='org.bluez.Headset',member='PropertyChanged'",
 688                 "type='signal',sender='org.bluez',interface='org.bluez.AudioSink',member='PropertyChanged'", NULL) < 0) {
 689         pa_log("Failed to add D-Bus matches: %s", err.message);
 690         goto fail;
 691     }
 692
 693     list_adapters(y);
 694
 695     return y;
 696
 697 fail:
 698
 699     if (y)
 700         pa_bluetooth_discovery_unref(y);
 701
 702     dbus_error_free(&err);
 703
 704     return NULL;
 705 }
 706
 707 pa_bluetooth_discovery* pa_bluetooth_discovery_ref(pa_bluetooth_discovery *y) {
 708     pa_assert(y);
 709     pa_assert(PA_REFCNT_VALUE(y) > 0);
 710
 711     PA_REFCNT_INC(y);
 712
 713     return y;
 714 }
 715
 716 void pa_bluetooth_discovery_unref(pa_bluetooth_discovery *y) {
 717     pa_bluetooth_device *d;
 718
 719     pa_assert(y);
 720     pa_assert(PA_REFCNT_VALUE(y) > 0);
 721
 722     if (PA_REFCNT_DEC(y) > 0)
 723         return;
 724
 725     pa_dbus_free_pending_list(&y->pending);
 726
 727     if (y->devices) {
 728         while ((d = pa_hashmap_steal_first(y->devices))) {
 729             run_callback(y, d, TRUE);
 730             device_free(d);
 731         }
 732
 733         pa_hashmap_free(y->devices, NULL, NULL);
 734     }
 735
 736     if (y->connection) {
 737         pa_dbus_remove_matches(pa_dbus_connection_get(y->connection),
 738                                "type='signal',sender='org.bluez',interface='org.bluez.Manager',member='AdapterAdded'",
 739                                "type='signal',sender='org.bluez',interface='org.bluez.Manager',member='AdapterRemoved'",
 740                                "type='signal',sender='org.bluez',interface='org.bluez.Adapter',member='DeviceRemoved'",
 741                                "type='signal',sender='org.bluez',interface='org.bluez.Adapter',member='DeviceCreated'",
 742                                "type='signal',sender='org.bluez',interface='org.bluez.Device',member='PropertyChanged'",
 743                                "type='signal',sender='org.bluez',interface='org.bluez.Headset',member='PropertyChanged'",
 744                                "type='signal',sender='org.bluez',interface='org.bluez.AudioSink',member='PropertyChanged'", NULL);
 745
 746         dbus_connection_remove_filter(pa_dbus_connection_get(y->connection), filter_cb, y);
 747
 748         pa_dbus_connection_unref(y->connection);
 749     }
 750
 751     pa_hook_done(&y->hook);
 752
 753     if (y->core)
 754         pa_shared_remove(y->core, "bluetooth-discovery");
 755 }
 756
 757 void pa_bluetooth_discovery_sync(pa_bluetooth_discovery *y) {
 758     pa_assert(y);
 759     pa_assert(PA_REFCNT_VALUE(y) > 0);
 760
 761     pa_dbus_sync_pending_list(&y->pending);
 762 }
 763
 764 pa_hook* pa_bluetooth_discovery_hook(pa_bluetooth_discovery *y) {
 765     pa_assert(y);
 766     pa_assert(PA_REFCNT_VALUE(y) > 0);
 767
 768     return &y->hook;
 769 }
 770
 771 const char*pa_bluetooth_get_form_factor(uint32_t class) {
 772     unsigned i;
 773     const char *r;
 774
 775     static const char * const table[] = {
 776         [1] = "headset",
 777         [2] = "hands-free",
 778         [4] = "microphone",
 779         [5] = "speaker",
 780         [6] = "headphone",
 781         [7] = "portable",
 782         [8] = "car",
 783         [10] = "hifi"
 784     };
 785
 786     if (((class >> 8) & 31) != 4)
 787         return NULL;
 788
 789     if ((i = (class >> 2) & 63) > PA_ELEMENTSOF(table))
 790         r =  NULL;
 791     else
 792         r = table[i];
 793
 794     if (!r)
 795         pa_log_debug("Unknown Bluetooth minor device class %u", i);
 796
 797     return r;
 798 }
 799
 800 char *pa_bluetooth_cleanup_name(const char *name) {
 801     char *t, *s, *d;
 802     pa_bool_t space = FALSE;
 803
 804     pa_assert(name);
 805
 806     while ((*name >= 1 && *name <= 32) || *name >= 127)
 807         name++;
 808
 809     t = pa_xstrdup(name);
 810
 811     for (s = d = t; *s; s++) {
 812
 813         if (*s <= 32 || *s >= 127 || *s == '_') {
 814             space = TRUE;
 815             continue;
 816         }
 817
 818         if (space) {
 819             *(d++) = ' ';
 820             space = FALSE;
 821         }
 822
 823         *(d++) = *s;
 824     }
 825
 826     *d = 0;
 827
 828     return t;
 829 }