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

   1 /***
   2   This file is part of PulseAudio.
   3
   4   Copyright 2008-2009 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 <pulse/xmalloc.h>
  27
  28 #include <pulsecore/core-util.h>
  29 #include <pulsecore/shared.h>
  30 #include <pulsecore/dbus-shared.h>
  31
  32 #include "bluetooth-util.h"
  33 #include "a2dp-codecs.h"
  34
  35 #define HFP_AG_ENDPOINT "/MediaEndpoint/HFPAG"
  36 #define HFP_HS_ENDPOINT "/MediaEndpoint/HFPHS"
  37 #define A2DP_SOURCE_ENDPOINT "/MediaEndpoint/A2DPSource"
  38 #define A2DP_SINK_ENDPOINT "/MediaEndpoint/A2DPSink"
  39
  40 #define ENDPOINT_INTROSPECT_XML                                         \
  41     DBUS_INTROSPECT_1_0_XML_DOCTYPE_DECL_NODE                           \
  42     "<node>"                                                            \
  43     " <interface name=\"org.bluez.MediaEndpoint\">"                     \
  44     "  <method name=\"SetConfiguration\">"                              \
  45     "   <arg name=\"transport\" direction=\"in\" type=\"o\"/>"          \
  46     "   <arg name=\"configuration\" direction=\"in\" type=\"ay\"/>"     \
  47     "  </method>"                                                       \
  48     "  <method name=\"SelectConfiguration\">"                           \
  49     "   <arg name=\"capabilities\" direction=\"in\" type=\"ay\"/>"      \
  50     "   <arg name=\"configuration\" direction=\"out\" type=\"ay\"/>"    \
  51     "  </method>"                                                       \
  52     "  <method name=\"ClearConfiguration\">"                            \
  53     "  </method>"                                                       \
  54     "  <method name=\"Release\">"                                       \
  55     "  </method>"                                                       \
  56     " </interface>"                                                     \
  57     " <interface name=\"org.freedesktop.DBus.Introspectable\">"         \
  58     "  <method name=\"Introspect\">"                                    \
  59     "   <arg name=\"data\" type=\"s\" direction=\"out\"/>"              \
  60     "  </method>"                                                       \
  61     " </interface>"                                                     \
  62     "</node>"
  63
  64 struct pa_bluetooth_discovery {
  65     PA_REFCNT_DECLARE;
  66
  67     pa_core *core;
  68     pa_dbus_connection *connection;
  69     PA_LLIST_HEAD(pa_dbus_pending, pending);
  70     pa_hashmap *devices;
  71     pa_hashmap *transports;
  72     pa_hook hooks[PA_BLUETOOTH_HOOK_MAX];
  73     pa_bool_t filter_added;
  74 };
  75
  76 static void get_properties_reply(DBusPendingCall *pending, void *userdata);
  77 static pa_dbus_pending* send_and_add_to_pending(pa_bluetooth_discovery *y, DBusMessage *m, DBusPendingCallNotifyFunction func, void *call_data);
  78 static void found_adapter(pa_bluetooth_discovery *y, const char *path);
  79 static pa_bluetooth_device *found_device(pa_bluetooth_discovery *y, const char* path);
  80
  81 pa_bt_audio_state_t pa_bt_audio_state_from_string(const char* value) {
  82     pa_assert(value);
  83
  84     if (pa_streq(value, "disconnected"))
  85         return PA_BT_AUDIO_STATE_DISCONNECTED;
  86     else if (pa_streq(value, "connecting"))
  87         return PA_BT_AUDIO_STATE_CONNECTING;
  88     else if (pa_streq(value, "connected"))
  89         return PA_BT_AUDIO_STATE_CONNECTED;
  90     else if (pa_streq(value, "playing"))
  91         return PA_BT_AUDIO_STATE_PLAYING;
  92
  93     return PA_BT_AUDIO_STATE_INVALID;
  94 }
  95
  96 const char *pa_bt_profile_to_string(enum profile profile) {
  97     switch(profile) {
  98         case PROFILE_A2DP:
  99             return "a2dp";
 100         case PROFILE_A2DP_SOURCE:
 101             return "a2dp_source";
 102         case PROFILE_HSP:
 103             return "hsp";
 104         case PROFILE_HFGW:
 105             return "hfgw";
 106         case PROFILE_OFF:
 107             pa_assert_not_reached();
 108     }
 109
 110     pa_assert_not_reached();
 111 }
 112
 113 static int profile_from_interface(const char *interface, enum profile *p) {
 114     pa_assert(interface);
 115     pa_assert(p);
 116
 117     if (pa_streq(interface, "org.bluez.AudioSink")) {
 118         *p = PROFILE_A2DP;
 119         return 0;
 120     } else if (pa_streq(interface, "org.bluez.AudioSource")) {
 121         *p = PROFILE_A2DP_SOURCE;
 122         return 0;
 123     } else if (pa_streq(interface, "org.bluez.Headset")) {
 124         *p = PROFILE_HSP;
 125         return 0;
 126     } else if (pa_streq(interface, "org.bluez.HandsfreeGateway")) {
 127         *p = PROFILE_HFGW;
 128         return 0;
 129     }
 130
 131     return -1;
 132 }
 133
 134 static pa_bluetooth_transport_state_t audio_state_to_transport_state(pa_bt_audio_state_t state) {
 135     switch (state) {
 136         case PA_BT_AUDIO_STATE_INVALID: /* Typically if state hasn't been received yet */
 137         case PA_BT_AUDIO_STATE_DISCONNECTED:
 138         case PA_BT_AUDIO_STATE_CONNECTING:
 139             return PA_BLUETOOTH_TRANSPORT_STATE_DISCONNECTED;
 140         case PA_BT_AUDIO_STATE_CONNECTED:
 141             return PA_BLUETOOTH_TRANSPORT_STATE_IDLE;
 142         case PA_BT_AUDIO_STATE_PLAYING:
 143             return PA_BLUETOOTH_TRANSPORT_STATE_PLAYING;
 144     }
 145
 146     pa_assert_not_reached();
 147 }
 148
 149 static pa_bluetooth_uuid *uuid_new(const char *uuid) {
 150     pa_bluetooth_uuid *u;
 151
 152     u = pa_xnew(pa_bluetooth_uuid, 1);
 153     u->uuid = pa_xstrdup(uuid);
 154     PA_LLIST_INIT(pa_bluetooth_uuid, u);
 155
 156     return u;
 157 }
 158
 159 static void uuid_free(pa_bluetooth_uuid *u) {
 160     pa_assert(u);
 161
 162     pa_xfree(u->uuid);
 163     pa_xfree(u);
 164 }
 165
 166 static pa_bluetooth_device* device_new(pa_bluetooth_discovery *discovery, const char *path) {
 167     pa_bluetooth_device *d;
 168     unsigned i;
 169
 170     pa_assert(discovery);
 171     pa_assert(path);
 172
 173     d = pa_xnew0(pa_bluetooth_device, 1);
 174
 175     d->discovery = discovery;
 176     d->dead = FALSE;
 177
 178     d->device_info_valid = 0;
 179
 180     d->name = NULL;
 181     d->path = pa_xstrdup(path);
 182     d->paired = -1;
 183     d->alias = NULL;
 184     PA_LLIST_HEAD_INIT(pa_bluetooth_uuid, d->uuids);
 185     d->address = NULL;
 186     d->class = -1;
 187     d->trusted = -1;
 188
 189     d->audio_state = PA_BT_AUDIO_STATE_INVALID;
 190
 191     for (i = 0; i < PA_BLUETOOTH_PROFILE_COUNT; i++)
 192         d->profile_state[i] = PA_BT_AUDIO_STATE_INVALID;
 193
 194     return d;
 195 }
 196
 197 static void transport_free(pa_bluetooth_transport *t) {
 198     pa_assert(t);
 199
 200     pa_xfree(t->owner);
 201     pa_xfree(t->path);
 202     pa_xfree(t->config);
 203     pa_xfree(t);
 204 }
 205
 206 static void device_free(pa_bluetooth_device *d) {
 207     pa_bluetooth_uuid *u;
 208     pa_bluetooth_transport *t;
 209     unsigned i;
 210
 211     pa_assert(d);
 212
 213     for (i = 0; i < PA_BLUETOOTH_PROFILE_COUNT; i++) {
 214         if (!(t = d->transports[i]))
 215             continue;
 216
 217         d->transports[i] = NULL;
 218         pa_hashmap_remove(d->discovery->transports, t->path);
 219         t->state = PA_BLUETOOTH_TRANSPORT_STATE_DISCONNECTED;
 220         pa_hook_fire(&d->discovery->hooks[PA_BLUETOOTH_HOOK_TRANSPORT_STATE_CHANGED], t);
 221         transport_free(t);
 222     }
 223
 224     while ((u = d->uuids)) {
 225         PA_LLIST_REMOVE(pa_bluetooth_uuid, d->uuids, u);
 226         uuid_free(u);
 227     }
 228
 229     pa_xfree(d->name);
 230     pa_xfree(d->path);
 231     pa_xfree(d->alias);
 232     pa_xfree(d->address);
 233     pa_xfree(d);
 234 }
 235
 236 static pa_bool_t device_is_audio_ready(const pa_bluetooth_device *d) {
 237     unsigned i;
 238
 239     pa_assert(d);
 240
 241     if (!d->device_info_valid || d->audio_state == PA_BT_AUDIO_STATE_INVALID)
 242         return FALSE;
 243
 244     for (i = 0; i < PA_BLUETOOTH_PROFILE_COUNT; i++)
 245         if (d->profile_state[i] != PA_BT_AUDIO_STATE_INVALID)
 246             return TRUE;
 247
 248     return FALSE;
 249 }
 250
 251 static const char *check_variant_property(DBusMessageIter *i) {
 252     const char *key;
 253
 254     pa_assert(i);
 255
 256     if (dbus_message_iter_get_arg_type(i) != DBUS_TYPE_STRING) {
 257         pa_log("Property name not a string.");
 258         return NULL;
 259     }
 260
 261     dbus_message_iter_get_basic(i, &key);
 262
 263     if (!dbus_message_iter_next(i)) {
 264         pa_log("Property value missing");
 265         return NULL;
 266     }
 267
 268     if (dbus_message_iter_get_arg_type(i) != DBUS_TYPE_VARIANT) {
 269         pa_log("Property value not a variant.");
 270         return NULL;
 271     }
 272
 273     return key;
 274 }
 275
 276 static int parse_manager_property(pa_bluetooth_discovery *y, DBusMessageIter *i) {
 277     const char *key;
 278     DBusMessageIter variant_i;
 279
 280     pa_assert(y);
 281
 282     key = check_variant_property(i);
 283     if (key == NULL)
 284         return -1;
 285
 286     dbus_message_iter_recurse(i, &variant_i);
 287
 288     switch (dbus_message_iter_get_arg_type(&variant_i)) {
 289
 290         case DBUS_TYPE_ARRAY: {
 291
 292             DBusMessageIter ai;
 293             dbus_message_iter_recurse(&variant_i, &ai);
 294
 295             if (dbus_message_iter_get_arg_type(&ai) == DBUS_TYPE_OBJECT_PATH &&
 296                 pa_streq(key, "Adapters")) {
 297
 298                 while (dbus_message_iter_get_arg_type(&ai) != DBUS_TYPE_INVALID) {
 299                     const char *value;
 300
 301                     dbus_message_iter_get_basic(&ai, &value);
 302
 303                     found_adapter(y, value);
 304
 305                     dbus_message_iter_next(&ai);
 306                 }
 307             }
 308
 309             break;
 310         }
 311     }
 312
 313     return 0;
 314 }
 315
 316 static int parse_adapter_property(pa_bluetooth_discovery *y, DBusMessageIter *i) {
 317     const char *key;
 318     DBusMessageIter variant_i;
 319
 320     pa_assert(y);
 321
 322     key = check_variant_property(i);
 323     if (key == NULL)
 324         return -1;
 325
 326     dbus_message_iter_recurse(i, &variant_i);
 327
 328     switch (dbus_message_iter_get_arg_type(&variant_i)) {
 329
 330         case DBUS_TYPE_ARRAY: {
 331
 332             DBusMessageIter ai;
 333             dbus_message_iter_recurse(&variant_i, &ai);
 334
 335             if (dbus_message_iter_get_arg_type(&ai) == DBUS_TYPE_OBJECT_PATH &&
 336                 pa_streq(key, "Devices")) {
 337
 338                 while (dbus_message_iter_get_arg_type(&ai) != DBUS_TYPE_INVALID) {
 339                     const char *value;
 340
 341                     dbus_message_iter_get_basic(&ai, &value);
 342
 343                     found_device(y, value);
 344
 345                     dbus_message_iter_next(&ai);
 346                 }
 347             }
 348
 349             break;
 350         }
 351     }
 352
 353     return 0;
 354 }
 355
 356 static int parse_device_property(pa_bluetooth_device *d, DBusMessageIter *i) {
 357     const char *key;
 358     DBusMessageIter variant_i;
 359
 360     pa_assert(d);
 361
 362     key = check_variant_property(i);
 363     if (key == NULL)
 364         return -1;
 365
 366     dbus_message_iter_recurse(i, &variant_i);
 367
 368 /*     pa_log_debug("Parsing property org.bluez.Device.%s", key); */
 369
 370     switch (dbus_message_iter_get_arg_type(&variant_i)) {
 371
 372         case DBUS_TYPE_STRING: {
 373
 374             const char *value;
 375             dbus_message_iter_get_basic(&variant_i, &value);
 376
 377             if (pa_streq(key, "Name")) {
 378                 pa_xfree(d->name);
 379                 d->name = pa_xstrdup(value);
 380             } else if (pa_streq(key, "Alias")) {
 381                 pa_xfree(d->alias);
 382                 d->alias = pa_xstrdup(value);
 383             } else if (pa_streq(key, "Address")) {
 384                 pa_xfree(d->address);
 385                 d->address = pa_xstrdup(value);
 386             }
 387
 388 /*             pa_log_debug("Value %s", value); */
 389
 390             break;
 391         }
 392
 393         case DBUS_TYPE_BOOLEAN: {
 394
 395             dbus_bool_t value;
 396             dbus_message_iter_get_basic(&variant_i, &value);
 397
 398             if (pa_streq(key, "Paired"))
 399                 d->paired = !!value;
 400             else if (pa_streq(key, "Trusted"))
 401                 d->trusted = !!value;
 402
 403 /*             pa_log_debug("Value %s", pa_yes_no(value)); */
 404
 405             break;
 406         }
 407
 408         case DBUS_TYPE_UINT32: {
 409
 410             uint32_t value;
 411             dbus_message_iter_get_basic(&variant_i, &value);
 412
 413             if (pa_streq(key, "Class"))
 414                 d->class = (int) value;
 415
 416 /*             pa_log_debug("Value %u", (unsigned) value); */
 417
 418             break;
 419         }
 420
 421         case DBUS_TYPE_ARRAY: {
 422
 423             DBusMessageIter ai;
 424             dbus_message_iter_recurse(&variant_i, &ai);
 425
 426             if (dbus_message_iter_get_arg_type(&ai) == DBUS_TYPE_STRING &&
 427                 pa_streq(key, "UUIDs")) {
 428                     DBusMessage *m;
 429                     pa_bool_t has_audio = FALSE;
 430
 431                 while (dbus_message_iter_get_arg_type(&ai) != DBUS_TYPE_INVALID) {
 432                     pa_bluetooth_uuid *node;
 433                     const char *value;
 434                     struct pa_bluetooth_hook_uuid_data uuiddata;
 435
 436                     dbus_message_iter_get_basic(&ai, &value);
 437
 438                     if (pa_bluetooth_uuid_has(d->uuids, value)) {
 439                         dbus_message_iter_next(&ai);
 440                         continue;
 441                     }
 442
 443                     node = uuid_new(value);
 444                     PA_LLIST_PREPEND(pa_bluetooth_uuid, d->uuids, node);
 445
 446                     uuiddata.device = d;
 447                     uuiddata.uuid = value;
 448                     pa_hook_fire(&d->discovery->hooks[PA_BLUETOOTH_HOOK_DEVICE_UUID_ADDED], &uuiddata);
 449
 450                     /* Vudentz said the interfaces are here when the UUIDs are announced */
 451                     if (strcasecmp(HSP_AG_UUID, value) == 0 || strcasecmp(HFP_AG_UUID, value) == 0) {
 452                         pa_assert_se(m = dbus_message_new_method_call("org.bluez", d->path, "org.bluez.HandsfreeGateway", "GetProperties"));
 453                         send_and_add_to_pending(d->discovery, m, get_properties_reply, d);
 454                         has_audio = TRUE;
 455                     } else if (strcasecmp(HSP_HS_UUID, value) == 0 || strcasecmp(HFP_HS_UUID, value) == 0) {
 456                         pa_assert_se(m = dbus_message_new_method_call("org.bluez", d->path, "org.bluez.Headset", "GetProperties"));
 457                         send_and_add_to_pending(d->discovery, m, get_properties_reply, d);
 458                         has_audio = TRUE;
 459                     } else if (strcasecmp(A2DP_SINK_UUID, value) == 0) {
 460                         pa_assert_se(m = dbus_message_new_method_call("org.bluez", d->path, "org.bluez.AudioSink", "GetProperties"));
 461                         send_and_add_to_pending(d->discovery, m, get_properties_reply, d);
 462                         has_audio = TRUE;
 463                     } else if (strcasecmp(A2DP_SOURCE_UUID, value) == 0) {
 464                         pa_assert_se(m = dbus_message_new_method_call("org.bluez", d->path, "org.bluez.AudioSource", "GetProperties"));
 465                         send_and_add_to_pending(d->discovery, m, get_properties_reply, d);
 466                         has_audio = TRUE;
 467                     }
 468
 469                     dbus_message_iter_next(&ai);
 470                 }
 471
 472                 /* this might eventually be racy if .Audio is not there yet, but the State change will come anyway later, so this call is for cold-detection mostly */
 473                 if (has_audio) {
 474                     pa_assert_se(m = dbus_message_new_method_call("org.bluez", d->path, "org.bluez.Audio", "GetProperties"));
 475                     send_and_add_to_pending(d->discovery, m, get_properties_reply, d);
 476                 }
 477             }
 478
 479             break;
 480         }
 481     }
 482
 483     return 0;
 484 }
 485
 486 static int parse_audio_property(pa_bluetooth_device *d, const char *interface, DBusMessageIter *i) {
 487     pa_bluetooth_transport *transport;
 488     const char *key;
 489     DBusMessageIter variant_i;
 490     bool is_audio_interface;
 491     enum profile p = PROFILE_OFF;
 492
 493     pa_assert(d);
 494     pa_assert(interface);
 495     pa_assert(i);
 496
 497     if (!(is_audio_interface = pa_streq(interface, "org.bluez.Audio")))
 498         if (profile_from_interface(interface, &p) < 0)
 499             return 0; /* Interface not known so silently ignore property */
 500
 501     key = check_variant_property(i);
 502     if (key == NULL)
 503         return -1;
 504
 505     transport = p == PROFILE_OFF ? NULL : d->transports[p];
 506
 507     dbus_message_iter_recurse(i, &variant_i);
 508
 509 /*     pa_log_debug("Parsing property org.bluez.{Audio|AudioSink|AudioSource|Headset}.%s", key); */
 510
 511     switch (dbus_message_iter_get_arg_type(&variant_i)) {
 512
 513         case DBUS_TYPE_STRING: {
 514
 515             const char *value;
 516             dbus_message_iter_get_basic(&variant_i, &value);
 517
 518             if (pa_streq(key, "State")) {
 519                 pa_bt_audio_state_t state = pa_bt_audio_state_from_string(value);
 520                 pa_bluetooth_transport_state_t old_state;
 521
 522                 pa_log_debug("Device %s interface %s property 'State' changed to value '%s'", d->path, interface, value);
 523
 524                 if (state == PA_BT_AUDIO_STATE_INVALID)
 525                     return -1;
 526
 527                 if (is_audio_interface) {
 528                     d->audio_state = state;
 529                     break;
 530                 }
 531
 532                 pa_assert(p != PROFILE_OFF);
 533
 534                 d->profile_state[p] = state;
 535
 536                 if (!transport)
 537                     break;
 538
 539                 old_state = transport->state;
 540                 transport->state = audio_state_to_transport_state(state);
 541
 542                 if (transport->state != old_state)
 543                     pa_hook_fire(&d->discovery->hooks[PA_BLUETOOTH_HOOK_TRANSPORT_STATE_CHANGED], transport);
 544             }
 545
 546             break;
 547         }
 548
 549         case DBUS_TYPE_UINT16: {
 550             uint16_t value;
 551
 552             dbus_message_iter_get_basic(&variant_i, &value);
 553
 554             if (pa_streq(key, "MicrophoneGain")) {
 555                 uint16_t gain;
 556
 557                 pa_log_debug("dbus: property '%s' changed to value '%u'", key, value);
 558
 559                 if (!transport) {
 560                     pa_log("Volume change does not have an associated transport");
 561                     return -1;
 562                 }
 563
 564                 if ((gain = PA_MIN(value, HSP_MAX_GAIN)) == transport->microphone_gain)
 565                     break;
 566
 567                 transport->microphone_gain = gain;
 568                 pa_hook_fire(&d->discovery->hooks[PA_BLUETOOTH_HOOK_TRANSPORT_MICROPHONE_GAIN_CHANGED], transport);
 569             } else if (pa_streq(key, "SpeakerGain")) {
 570                 uint16_t gain;
 571
 572                 pa_log_debug("dbus: property '%s' changed to value '%u'", key, value);
 573
 574                 if (!transport) {
 575                     pa_log("Volume change does not have an associated transport");
 576                     return -1;
 577                 }
 578
 579                 if ((gain = PA_MIN(value, HSP_MAX_GAIN)) == transport->speaker_gain)
 580                     break;
 581
 582                 transport->speaker_gain = gain;
 583                 pa_hook_fire(&d->discovery->hooks[PA_BLUETOOTH_HOOK_TRANSPORT_SPEAKER_GAIN_CHANGED], transport);
 584             }
 585
 586             break;
 587         }
 588     }
 589
 590     return 0;
 591 }
 592
 593 static void run_callback(pa_bluetooth_device *d, pa_bool_t dead) {
 594     pa_assert(d);
 595
 596     if (!device_is_audio_ready(d))
 597         return;
 598
 599     d->dead = dead;
 600     pa_hook_fire(&d->discovery->hooks[PA_BLUETOOTH_HOOK_DEVICE_CONNECTION_CHANGED], d);
 601 }
 602
 603 static void remove_all_devices(pa_bluetooth_discovery *y) {
 604     pa_bluetooth_device *d;
 605
 606     pa_assert(y);
 607
 608     while ((d = pa_hashmap_steal_first(y->devices))) {
 609         run_callback(d, TRUE);
 610         device_free(d);
 611     }
 612 }
 613
 614 static pa_bluetooth_device *found_device(pa_bluetooth_discovery *y, const char* path) {
 615     DBusMessage *m;
 616     pa_bluetooth_device *d;
 617
 618     pa_assert(y);
 619     pa_assert(path);
 620
 621     d = pa_hashmap_get(y->devices, path);
 622     if (d)
 623         return d;
 624
 625     d = device_new(y, path);
 626
 627     pa_hashmap_put(y->devices, d->path, d);
 628
 629     pa_assert_se(m = dbus_message_new_method_call("org.bluez", path, "org.bluez.Device", "GetProperties"));
 630     send_and_add_to_pending(y, m, get_properties_reply, d);
 631
 632     /* Before we read the other properties (Audio, AudioSink, AudioSource,
 633      * Headset) we wait that the UUID is read */
 634     return d;
 635 }
 636
 637 static void get_properties_reply(DBusPendingCall *pending, void *userdata) {
 638     DBusMessage *r;
 639     DBusMessageIter arg_i, element_i;
 640     pa_dbus_pending *p;
 641     pa_bluetooth_device *d;
 642     pa_bluetooth_discovery *y;
 643     int valid;
 644     bool old_any_connected;
 645
 646     pa_assert_se(p = userdata);
 647     pa_assert_se(y = p->context_data);
 648     pa_assert_se(r = dbus_pending_call_steal_reply(pending));
 649
 650 /*     pa_log_debug("Got %s.GetProperties response for %s", */
 651 /*                  dbus_message_get_interface(p->message), */
 652 /*                  dbus_message_get_path(p->message)); */
 653
 654     /* We don't use p->call_data here right-away since the device
 655      * might already be invalidated at this point */
 656
 657     if (dbus_message_has_interface(p->message, "org.bluez.Manager") ||
 658         dbus_message_has_interface(p->message, "org.bluez.Adapter"))
 659         d = NULL;
 660     else
 661         d = pa_hashmap_get(y->devices, dbus_message_get_path(p->message));
 662
 663     pa_assert(p->call_data == d);
 664
 665     if (d != NULL)
 666         old_any_connected = pa_bluetooth_device_any_audio_connected(d);
 667
 668     valid = dbus_message_get_type(r) == DBUS_MESSAGE_TYPE_ERROR ? -1 : 1;
 669
 670     if (dbus_message_is_method_call(p->message, "org.bluez.Device", "GetProperties"))
 671         d->device_info_valid = valid;
 672
 673     if (dbus_message_is_error(r, DBUS_ERROR_SERVICE_UNKNOWN)) {
 674         pa_log_debug("Bluetooth daemon is apparently not available.");
 675         remove_all_devices(y);
 676         goto finish2;
 677     }
 678
 679     if (dbus_message_get_type(r) == DBUS_MESSAGE_TYPE_ERROR) {
 680         pa_log("%s.GetProperties() failed: %s: %s", dbus_message_get_interface(p->message), dbus_message_get_error_name(r), pa_dbus_get_error_message(r));
 681         goto finish;
 682     }
 683
 684     if (!dbus_message_iter_init(r, &arg_i)) {
 685         pa_log("GetProperties reply has no arguments.");
 686         goto finish;
 687     }
 688
 689     if (dbus_message_iter_get_arg_type(&arg_i) != DBUS_TYPE_ARRAY) {
 690         pa_log("GetProperties argument is not an array.");
 691         goto finish;
 692     }
 693
 694     dbus_message_iter_recurse(&arg_i, &element_i);
 695     while (dbus_message_iter_get_arg_type(&element_i) != DBUS_TYPE_INVALID) {
 696
 697         if (dbus_message_iter_get_arg_type(&element_i) == DBUS_TYPE_DICT_ENTRY) {
 698             DBusMessageIter dict_i;
 699
 700             dbus_message_iter_recurse(&element_i, &dict_i);
 701
 702             if (dbus_message_has_interface(p->message, "org.bluez.Manager")) {
 703                 if (parse_manager_property(y, &dict_i) < 0)
 704                     goto finish;
 705
 706             } else if (dbus_message_has_interface(p->message, "org.bluez.Adapter")) {
 707                 if (parse_adapter_property(y, &dict_i) < 0)
 708                     goto finish;
 709
 710             } else if (dbus_message_has_interface(p->message, "org.bluez.Device")) {
 711                 if (parse_device_property(d, &dict_i) < 0)
 712                     goto finish;
 713
 714             } else if (parse_audio_property(d, dbus_message_get_interface(p->message), &dict_i) < 0)
 715                 goto finish;
 716
 717         }
 718
 719         dbus_message_iter_next(&element_i);
 720     }
 721
 722 finish:
 723     if (d != NULL && old_any_connected != pa_bluetooth_device_any_audio_connected(d))
 724         run_callback(d, FALSE);
 725
 726 finish2:
 727     dbus_message_unref(r);
 728
 729     PA_LLIST_REMOVE(pa_dbus_pending, y->pending, p);
 730     pa_dbus_pending_free(p);
 731 }
 732
 733 static pa_dbus_pending* send_and_add_to_pending(pa_bluetooth_discovery *y, DBusMessage *m, DBusPendingCallNotifyFunction func, void *call_data) {
 734     pa_dbus_pending *p;
 735     DBusPendingCall *call;
 736
 737     pa_assert(y);
 738     pa_assert(m);
 739
 740     pa_assert_se(dbus_connection_send_with_reply(pa_dbus_connection_get(y->connection), m, &call, -1));
 741
 742     p = pa_dbus_pending_new(pa_dbus_connection_get(y->connection), m, call, y, call_data);
 743     PA_LLIST_PREPEND(pa_dbus_pending, y->pending, p);
 744     dbus_pending_call_set_notify(call, func, p, NULL);
 745
 746     return p;
 747 }
 748
 749 static void register_endpoint_reply(DBusPendingCall *pending, void *userdata) {
 750     DBusError e;
 751     DBusMessage *r;
 752     pa_dbus_pending *p;
 753     pa_bluetooth_discovery *y;
 754     char *endpoint;
 755
 756     pa_assert(pending);
 757
 758     dbus_error_init(&e);
 759
 760     pa_assert_se(p = userdata);
 761     pa_assert_se(y = p->context_data);
 762     pa_assert_se(endpoint = p->call_data);
 763     pa_assert_se(r = dbus_pending_call_steal_reply(pending));
 764
 765     if (dbus_message_is_error(r, DBUS_ERROR_SERVICE_UNKNOWN)) {
 766         pa_log_debug("Bluetooth daemon is apparently not available.");
 767         remove_all_devices(y);
 768         goto finish;
 769     }
 770
 771     if (dbus_message_is_error(r, PA_BLUETOOTH_ERROR_NOT_SUPPORTED)) {
 772         pa_log_info("Couldn't register endpoint %s, because BlueZ is configured to disable the endpoint type.", endpoint);
 773         goto finish;
 774     }
 775
 776     if (dbus_message_get_type(r) == DBUS_MESSAGE_TYPE_ERROR) {
 777         pa_log("org.bluez.Media.RegisterEndpoint() failed: %s: %s", dbus_message_get_error_name(r), pa_dbus_get_error_message(r));
 778         goto finish;
 779     }
 780
 781 finish:
 782     dbus_message_unref(r);
 783
 784     PA_LLIST_REMOVE(pa_dbus_pending, y->pending, p);
 785     pa_dbus_pending_free(p);
 786
 787     pa_xfree(endpoint);
 788 }
 789
 790 static void register_endpoint(pa_bluetooth_discovery *y, const char *path, const char *endpoint, const char *uuid) {
 791     DBusMessage *m;
 792     DBusMessageIter i, d;
 793     uint8_t codec = 0;
 794
 795     pa_log_debug("Registering %s on adapter %s.", endpoint, path);
 796
 797     pa_assert_se(m = dbus_message_new_method_call("org.bluez", path, "org.bluez.Media", "RegisterEndpoint"));
 798
 799     dbus_message_iter_init_append(m, &i);
 800
 801     dbus_message_iter_append_basic(&i, DBUS_TYPE_OBJECT_PATH, &endpoint);
 802
 803     dbus_message_iter_open_container(&i, DBUS_TYPE_ARRAY, DBUS_DICT_ENTRY_BEGIN_CHAR_AS_STRING
 804                                     DBUS_TYPE_STRING_AS_STRING DBUS_TYPE_VARIANT_AS_STRING DBUS_DICT_ENTRY_END_CHAR_AS_STRING,
 805                                     &d);
 806
 807     pa_dbus_append_basic_variant_dict_entry(&d, "UUID", DBUS_TYPE_STRING, &uuid);
 808
 809     pa_dbus_append_basic_variant_dict_entry(&d, "Codec", DBUS_TYPE_BYTE, &codec);
 810
 811     if (pa_streq(uuid, HFP_AG_UUID) || pa_streq(uuid, HFP_HS_UUID)) {
 812         uint8_t capability = 0;
 813         pa_dbus_append_basic_array_variant_dict_entry(&d, "Capabilities", DBUS_TYPE_BYTE, &capability, 1);
 814     } else {
 815         a2dp_sbc_t capabilities;
 816
 817         capabilities.channel_mode = SBC_CHANNEL_MODE_MONO | SBC_CHANNEL_MODE_DUAL_CHANNEL |
 818                                     SBC_CHANNEL_MODE_STEREO | SBC_CHANNEL_MODE_JOINT_STEREO;
 819         capabilities.frequency = SBC_SAMPLING_FREQ_16000 | SBC_SAMPLING_FREQ_32000 |
 820                                  SBC_SAMPLING_FREQ_44100 | SBC_SAMPLING_FREQ_48000;
 821         capabilities.allocation_method = SBC_ALLOCATION_SNR | SBC_ALLOCATION_LOUDNESS;
 822         capabilities.subbands = SBC_SUBBANDS_4 | SBC_SUBBANDS_8;
 823         capabilities.block_length = SBC_BLOCK_LENGTH_4 | SBC_BLOCK_LENGTH_8 |
 824                                     SBC_BLOCK_LENGTH_12 | SBC_BLOCK_LENGTH_16;
 825         capabilities.min_bitpool = MIN_BITPOOL;
 826         capabilities.max_bitpool = MAX_BITPOOL;
 827
 828         pa_dbus_append_basic_array_variant_dict_entry(&d, "Capabilities", DBUS_TYPE_BYTE, &capabilities, sizeof(capabilities));
 829     }
 830
 831     dbus_message_iter_close_container(&i, &d);
 832
 833     send_and_add_to_pending(y, m, register_endpoint_reply, pa_xstrdup(endpoint));
 834 }
 835
 836 static void found_adapter(pa_bluetooth_discovery *y, const char *path) {
 837     DBusMessage *m;
 838
 839     pa_assert_se(m = dbus_message_new_method_call("org.bluez", path, "org.bluez.Adapter", "GetProperties"));
 840     send_and_add_to_pending(y, m, get_properties_reply, NULL);
 841
 842     register_endpoint(y, path, HFP_AG_ENDPOINT, HFP_AG_UUID);
 843     register_endpoint(y, path, HFP_HS_ENDPOINT, HFP_HS_UUID);
 844     register_endpoint(y, path, A2DP_SOURCE_ENDPOINT, A2DP_SOURCE_UUID);
 845     register_endpoint(y, path, A2DP_SINK_ENDPOINT, A2DP_SINK_UUID);
 846 }
 847
 848 static void list_adapters(pa_bluetooth_discovery *y) {
 849     DBusMessage *m;
 850     pa_assert(y);
 851
 852     pa_assert_se(m = dbus_message_new_method_call("org.bluez", "/", "org.bluez.Manager", "GetProperties"));
 853     send_and_add_to_pending(y, m, get_properties_reply, NULL);
 854 }
 855
 856 static int transport_parse_property(pa_bluetooth_transport *t, DBusMessageIter *i) {
 857     const char *key;
 858     DBusMessageIter variant_i;
 859
 860     key = check_variant_property(i);
 861     if (key == NULL)
 862         return -1;
 863
 864     dbus_message_iter_recurse(i, &variant_i);
 865
 866     switch (dbus_message_iter_get_arg_type(&variant_i)) {
 867
 868         case DBUS_TYPE_BOOLEAN: {
 869
 870             dbus_bool_t value;
 871             dbus_message_iter_get_basic(&variant_i, &value);
 872
 873             if (pa_streq(key, "NREC") && t->nrec != value) {
 874                 t->nrec = value;
 875                 pa_log_debug("Transport %s: Property 'NREC' changed to %s.", t->path, t->nrec ? "True" : "False");
 876                 pa_hook_fire(&t->device->discovery->hooks[PA_BLUETOOTH_HOOK_TRANSPORT_NREC_CHANGED], t);
 877             }
 878
 879             break;
 880          }
 881     }
 882
 883     return 0;
 884 }
 885
 886 static DBusHandlerResult filter_cb(DBusConnection *bus, DBusMessage *m, void *userdata) {
 887     DBusError err;
 888     pa_bluetooth_discovery *y;
 889
 890     pa_assert(bus);
 891     pa_assert(m);
 892
 893     pa_assert_se(y = userdata);
 894
 895     dbus_error_init(&err);
 896
 897     pa_log_debug("dbus: interface=%s, path=%s, member=%s\n",
 898             dbus_message_get_interface(m),
 899             dbus_message_get_path(m),
 900             dbus_message_get_member(m));
 901
 902     if (dbus_message_is_signal(m, "org.bluez.Adapter", "DeviceRemoved")) {
 903         const char *path;
 904         pa_bluetooth_device *d;
 905
 906         if (!dbus_message_get_args(m, &err, DBUS_TYPE_OBJECT_PATH, &path, DBUS_TYPE_INVALID)) {
 907             pa_log("Failed to parse org.bluez.Adapter.DeviceRemoved: %s", err.message);
 908             goto fail;
 909         }
 910
 911         pa_log_debug("Device %s removed", path);
 912
 913         if ((d = pa_hashmap_remove(y->devices, path))) {
 914             run_callback(d, TRUE);
 915             device_free(d);
 916         }
 917
 918         return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
 919
 920     } else if (dbus_message_is_signal(m, "org.bluez.Adapter", "DeviceCreated")) {
 921         const char *path;
 922
 923         if (!dbus_message_get_args(m, &err, DBUS_TYPE_OBJECT_PATH, &path, DBUS_TYPE_INVALID)) {
 924             pa_log("Failed to parse org.bluez.Adapter.DeviceCreated: %s", err.message);
 925             goto fail;
 926         }
 927
 928         pa_log_debug("Device %s created", path);
 929
 930         found_device(y, path);
 931         return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
 932
 933     } else if (dbus_message_is_signal(m, "org.bluez.Manager", "AdapterAdded")) {
 934         const char *path;
 935
 936         if (!dbus_message_get_args(m, &err, DBUS_TYPE_OBJECT_PATH, &path, DBUS_TYPE_INVALID)) {
 937             pa_log("Failed to parse org.bluez.Manager.AdapterAdded: %s", err.message);
 938             goto fail;
 939         }
 940
 941         pa_log_debug("Adapter %s created", path);
 942
 943         found_adapter(y, path);
 944         return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
 945
 946     } else if (dbus_message_is_signal(m, "org.bluez.Audio", "PropertyChanged") ||
 947                dbus_message_is_signal(m, "org.bluez.Headset", "PropertyChanged") ||
 948                dbus_message_is_signal(m, "org.bluez.AudioSink", "PropertyChanged") ||
 949                dbus_message_is_signal(m, "org.bluez.AudioSource", "PropertyChanged") ||
 950                dbus_message_is_signal(m, "org.bluez.HandsfreeGateway", "PropertyChanged") ||
 951                dbus_message_is_signal(m, "org.bluez.Device", "PropertyChanged")) {
 952
 953         pa_bluetooth_device *d;
 954
 955         if ((d = pa_hashmap_get(y->devices, dbus_message_get_path(m)))) {
 956             DBusMessageIter arg_i;
 957             bool old_any_connected = pa_bluetooth_device_any_audio_connected(d);
 958
 959             if (!dbus_message_iter_init(m, &arg_i)) {
 960                 pa_log("Failed to parse PropertyChanged: %s", err.message);
 961                 goto fail;
 962             }
 963
 964             if (dbus_message_has_interface(m, "org.bluez.Device")) {
 965                 if (parse_device_property(d, &arg_i) < 0)
 966                     goto fail;
 967
 968             } else if (parse_audio_property(d, dbus_message_get_interface(m), &arg_i) < 0)
 969                 goto fail;
 970
 971             if (old_any_connected != pa_bluetooth_device_any_audio_connected(d))
 972                 run_callback(d, FALSE);
 973         }
 974
 975         return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
 976
 977     } else if (dbus_message_is_signal(m, "org.freedesktop.DBus", "NameOwnerChanged")) {
 978         const char *name, *old_owner, *new_owner;
 979
 980         if (!dbus_message_get_args(m, &err,
 981                                    DBUS_TYPE_STRING, &name,
 982                                    DBUS_TYPE_STRING, &old_owner,
 983                                    DBUS_TYPE_STRING, &new_owner,
 984                                    DBUS_TYPE_INVALID)) {
 985             pa_log("Failed to parse org.freedesktop.DBus.NameOwnerChanged: %s", err.message);
 986             goto fail;
 987         }
 988
 989         if (pa_streq(name, "org.bluez")) {
 990             if (old_owner && *old_owner) {
 991                 pa_log_debug("Bluetooth daemon disappeared.");
 992                 remove_all_devices(y);
 993             }
 994
 995             if (new_owner && *new_owner) {
 996                 pa_log_debug("Bluetooth daemon appeared.");
 997                 list_adapters(y);
 998             }
 999         }
1000
1001         return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
1002     } else if (dbus_message_is_signal(m, "org.bluez.MediaTransport", "PropertyChanged")) {
1003         pa_bluetooth_transport *t;
1004         DBusMessageIter arg_i;
1005
1006         if (!(t = pa_hashmap_get(y->transports, dbus_message_get_path(m))))
1007             goto fail;
1008
1009         if (!dbus_message_iter_init(m, &arg_i)) {
1010             pa_log("Failed to parse PropertyChanged: %s", err.message);
1011             goto fail;
1012         }
1013
1014         if (transport_parse_property(t, &arg_i) < 0)
1015             goto fail;
1016
1017         return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
1018     }
1019
1020 fail:
1021     dbus_error_free(&err);
1022
1023     return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
1024 }
1025
1026 pa_bluetooth_device* pa_bluetooth_discovery_get_by_address(pa_bluetooth_discovery *y, const char* address) {
1027     pa_bluetooth_device *d;
1028     void *state = NULL;
1029
1030     pa_assert(y);
1031     pa_assert(PA_REFCNT_VALUE(y) > 0);
1032     pa_assert(address);
1033
1034     if (!pa_hook_is_firing(&y->hooks[PA_BLUETOOTH_HOOK_DEVICE_CONNECTION_CHANGED]))
1035         pa_bluetooth_discovery_sync(y);
1036
1037     while ((d = pa_hashmap_iterate(y->devices, &state, NULL)))
1038         if (pa_streq(d->address, address))
1039             return device_is_audio_ready(d) ? d : NULL;
1040
1041     return NULL;
1042 }
1043
1044 pa_bluetooth_device* pa_bluetooth_discovery_get_by_path(pa_bluetooth_discovery *y, const char* path) {
1045     pa_bluetooth_device *d;
1046
1047     pa_assert(y);
1048     pa_assert(PA_REFCNT_VALUE(y) > 0);
1049     pa_assert(path);
1050
1051     if (!pa_hook_is_firing(&y->hooks[PA_BLUETOOTH_HOOK_DEVICE_CONNECTION_CHANGED]))
1052         pa_bluetooth_discovery_sync(y);
1053
1054     if ((d = pa_hashmap_get(y->devices, path)))
1055         if (device_is_audio_ready(d))
1056             return d;
1057
1058     return NULL;
1059 }
1060
1061 bool pa_bluetooth_device_any_audio_connected(const pa_bluetooth_device *d) {
1062     pa_assert(d);
1063
1064     if (d->dead || !device_is_audio_ready(d))
1065         return false;
1066
1067     /* Deliberately ignore audio_sink_state and headset_state since they are
1068      * reflected in audio_state. This is actually very important in order to
1069      * make module-card-restore work well with headsets: if the headset
1070      * supports both HSP and A2DP, one of those profiles is connected first and
1071      * then the other, and lastly the Audio interface becomes connected.
1072      * Checking only audio_state means that this function will return false at
1073      * the time when only the first connection has been made. This is good,
1074      * because otherwise, if the first connection is for HSP and we would
1075      * already load a new device module instance, and module-card-restore tries
1076      * to restore the A2DP profile, that would fail because A2DP is not yet
1077      * connected. Waiting until the Audio interface gets connected means that
1078      * both headset profiles will be connected when the device module is
1079      * loaded. */
1080     return
1081         d->audio_state >= PA_BT_AUDIO_STATE_CONNECTED ||
1082         d->profile_state[PROFILE_A2DP_SOURCE] >= PA_BT_AUDIO_STATE_CONNECTED ||
1083         d->profile_state[PROFILE_HFGW] >= PA_BT_AUDIO_STATE_CONNECTED;
1084 }
1085
1086 int pa_bluetooth_transport_acquire(pa_bluetooth_transport *t, const char *accesstype, size_t *imtu, size_t *omtu) {
1087     DBusMessage *m, *r;
1088     DBusError err;
1089     int ret;
1090     uint16_t i, o;
1091
1092     pa_assert(t);
1093     pa_assert(t->device);
1094     pa_assert(t->device->discovery);
1095
1096     dbus_error_init(&err);
1097
1098     pa_assert_se(m = dbus_message_new_method_call(t->owner, t->path, "org.bluez.MediaTransport", "Acquire"));
1099     pa_assert_se(dbus_message_append_args(m, DBUS_TYPE_STRING, &accesstype, DBUS_TYPE_INVALID));
1100     r = dbus_connection_send_with_reply_and_block(pa_dbus_connection_get(t->device->discovery->connection), m, -1, &err);
1101
1102     if (dbus_error_is_set(&err) || !r) {
1103         dbus_error_free(&err);
1104         return -1;
1105     }
1106
1107     if (!dbus_message_get_args(r, &err, DBUS_TYPE_UNIX_FD, &ret, DBUS_TYPE_UINT16, &i, DBUS_TYPE_UINT16, &o, DBUS_TYPE_INVALID)) {
1108         pa_log("Failed to parse org.bluez.MediaTransport.Acquire(): %s", err.message);
1109         ret = -1;
1110         dbus_error_free(&err);
1111         goto fail;
1112     }
1113
1114     if (imtu)
1115         *imtu = i;
1116
1117     if (omtu)
1118         *omtu = o;
1119
1120 fail:
1121     dbus_message_unref(r);
1122     return ret;
1123 }
1124
1125 void pa_bluetooth_transport_release(pa_bluetooth_transport *t, const char *accesstype) {
1126     DBusMessage *m;
1127     DBusError err;
1128
1129     pa_assert(t);
1130     pa_assert(t->device);
1131     pa_assert(t->device->discovery);
1132
1133     dbus_error_init(&err);
1134
1135     pa_assert_se(m = dbus_message_new_method_call(t->owner, t->path, "org.bluez.MediaTransport", "Release"));
1136     pa_assert_se(dbus_message_append_args(m, DBUS_TYPE_STRING, &accesstype, DBUS_TYPE_INVALID));
1137     dbus_connection_send_with_reply_and_block(pa_dbus_connection_get(t->device->discovery->connection), m, -1, &err);
1138
1139     if (dbus_error_is_set(&err)) {
1140         pa_log("Failed to release transport %s: %s", t->path, err.message);
1141         dbus_error_free(&err);
1142     } else
1143         pa_log_info("Transport %s released", t->path);
1144 }
1145
1146 static void set_property(pa_bluetooth_discovery *y, const char *bus, const char *path, const char *interface,
1147                          const char *prop_name, int prop_type, void *prop_value) {
1148     DBusMessage *m;
1149     DBusMessageIter i;
1150
1151     pa_assert(y);
1152     pa_assert(path);
1153     pa_assert(interface);
1154     pa_assert(prop_name);
1155
1156     pa_assert_se(m = dbus_message_new_method_call(bus, path, interface, "SetProperty"));
1157     dbus_message_iter_init_append(m, &i);
1158     dbus_message_iter_append_basic(&i, DBUS_TYPE_STRING, &prop_name);
1159     pa_dbus_append_basic_variant(&i, prop_type, prop_value);
1160
1161     dbus_message_set_no_reply(m, true);
1162     pa_assert_se(dbus_connection_send(pa_dbus_connection_get(y->connection), m, NULL));
1163     dbus_message_unref(m);
1164 }
1165
1166 void pa_bluetooth_transport_set_microphone_gain(pa_bluetooth_transport *t, uint16_t value) {
1167     dbus_uint16_t gain = PA_MIN(value, HSP_MAX_GAIN);
1168
1169     pa_assert(t);
1170     pa_assert(t->profile == PROFILE_HSP);
1171
1172     set_property(t->device->discovery, "org.bluez", t->device->path, "org.bluez.Headset",
1173                  "MicrophoneGain", DBUS_TYPE_UINT16, &gain);
1174 }
1175
1176 void pa_bluetooth_transport_set_speaker_gain(pa_bluetooth_transport *t, uint16_t value) {
1177     dbus_uint16_t gain = PA_MIN(value, HSP_MAX_GAIN);
1178
1179     pa_assert(t);
1180     pa_assert(t->profile == PROFILE_HSP);
1181
1182     set_property(t->device->discovery, "org.bluez", t->device->path, "org.bluez.Headset",
1183                  "SpeakerGain", DBUS_TYPE_UINT16, &gain);
1184 }
1185
1186 static int setup_dbus(pa_bluetooth_discovery *y) {
1187     DBusError err;
1188
1189     dbus_error_init(&err);
1190
1191     y->connection = pa_dbus_bus_get(y->core, DBUS_BUS_SYSTEM, &err);
1192
1193     if (dbus_error_is_set(&err) || !y->connection) {
1194         pa_log("Failed to get D-Bus connection: %s", err.message);
1195         dbus_error_free(&err);
1196         return -1;
1197     }
1198
1199     return 0;
1200 }
1201
1202 static pa_bluetooth_transport *transport_new(pa_bluetooth_device *d, const char *owner, const char *path, enum profile p,
1203                                              const uint8_t *config, int size) {
1204     pa_bluetooth_transport *t;
1205
1206     t = pa_xnew0(pa_bluetooth_transport, 1);
1207     t->device = d;
1208     t->owner = pa_xstrdup(owner);
1209     t->path = pa_xstrdup(path);
1210     t->profile = p;
1211     t->config_size = size;
1212
1213     if (size > 0) {
1214         t->config = pa_xnew(uint8_t, size);
1215         memcpy(t->config, config, size);
1216     }
1217
1218     t->state = audio_state_to_transport_state(d->profile_state[p]);
1219
1220     return t;
1221 }
1222
1223 static DBusMessage *endpoint_set_configuration(DBusConnection *conn, DBusMessage *m, void *userdata) {
1224     pa_bluetooth_discovery *y = userdata;
1225     pa_bluetooth_device *d;
1226     pa_bluetooth_transport *t;
1227     const char *sender, *path, *dev_path = NULL, *uuid = NULL;
1228     uint8_t *config = NULL;
1229     int size = 0;
1230     pa_bool_t nrec = FALSE;
1231     enum profile p;
1232     DBusMessageIter args, props;
1233     DBusMessage *r;
1234
1235     dbus_message_iter_init(m, &args);
1236
1237     dbus_message_iter_get_basic(&args, &path);
1238
1239     if (pa_hashmap_get(y->transports, path)) {
1240         pa_log("org.bluez.MediaEndpoint.SetConfiguration: Transport %s is already configured.", path);
1241         goto fail;
1242     }
1243
1244     if (!dbus_message_iter_next(&args))
1245         goto fail;
1246
1247     dbus_message_iter_recurse(&args, &props);
1248     if (dbus_message_iter_get_arg_type(&props) != DBUS_TYPE_DICT_ENTRY)
1249         goto fail;
1250
1251     /* Read transport properties */
1252     while (dbus_message_iter_get_arg_type(&props) == DBUS_TYPE_DICT_ENTRY) {
1253         const char *key;
1254         DBusMessageIter value, entry;
1255         int var;
1256
1257         dbus_message_iter_recurse(&props, &entry);
1258         dbus_message_iter_get_basic(&entry, &key);
1259
1260         dbus_message_iter_next(&entry);
1261         dbus_message_iter_recurse(&entry, &value);
1262
1263         var = dbus_message_iter_get_arg_type(&value);
1264         if (strcasecmp(key, "UUID") == 0) {
1265             if (var != DBUS_TYPE_STRING)
1266                 goto fail;
1267             dbus_message_iter_get_basic(&value, &uuid);
1268         } else if (strcasecmp(key, "Device") == 0) {
1269             if (var != DBUS_TYPE_OBJECT_PATH)
1270                 goto fail;
1271             dbus_message_iter_get_basic(&value, &dev_path);
1272         } else if (strcasecmp(key, "NREC") == 0) {
1273             dbus_bool_t tmp_boolean;
1274             if (var != DBUS_TYPE_BOOLEAN)
1275                 goto fail;
1276             dbus_message_iter_get_basic(&value, &tmp_boolean);
1277             nrec = tmp_boolean;
1278         } else if (strcasecmp(key, "Configuration") == 0) {
1279             DBusMessageIter array;
1280             if (var != DBUS_TYPE_ARRAY)
1281                 goto fail;
1282             dbus_message_iter_recurse(&value, &array);
1283             dbus_message_iter_get_fixed_array(&array, &config, &size);
1284         }
1285
1286         dbus_message_iter_next(&props);
1287     }
1288
1289     d = found_device(y, dev_path);
1290     if (!d)
1291         goto fail;
1292
1293     if (dbus_message_has_path(m, HFP_AG_ENDPOINT))
1294         p = PROFILE_HSP;
1295     else if (dbus_message_has_path(m, HFP_HS_ENDPOINT))
1296         p = PROFILE_HFGW;
1297     else if (dbus_message_has_path(m, A2DP_SOURCE_ENDPOINT))
1298         p = PROFILE_A2DP;
1299     else
1300         p = PROFILE_A2DP_SOURCE;
1301
1302     if (d->transports[p] != NULL) {
1303         pa_log("Cannot configure transport %s because profile %d is already used", path, p);
1304         goto fail;
1305     }
1306
1307     sender = dbus_message_get_sender(m);
1308
1309     t = transport_new(d, sender, path, p, config, size);
1310     if (nrec)
1311         t->nrec = nrec;
1312
1313     d->transports[p] = t;
1314     pa_assert_se(pa_hashmap_put(y->transports, t->path, t) >= 0);
1315
1316     pa_log_debug("Transport %s profile %d available", t->path, t->profile);
1317
1318     pa_assert_se(r = dbus_message_new_method_return(m));
1319
1320     return r;
1321
1322 fail:
1323     pa_log("org.bluez.MediaEndpoint.SetConfiguration: invalid arguments");
1324     pa_assert_se(r = (dbus_message_new_error(m, "org.bluez.MediaEndpoint.Error.InvalidArguments",
1325                                                         "Unable to set configuration")));
1326     return r;
1327 }
1328
1329 static DBusMessage *endpoint_clear_configuration(DBusConnection *c, DBusMessage *m, void *userdata) {
1330     pa_bluetooth_discovery *y = userdata;
1331     pa_bluetooth_transport *t;
1332     DBusMessage *r;
1333     DBusError e;
1334     const char *path;
1335
1336     dbus_error_init(&e);
1337
1338     if (!dbus_message_get_args(m, &e, DBUS_TYPE_OBJECT_PATH, &path, DBUS_TYPE_INVALID)) {
1339         pa_log("org.bluez.MediaEndpoint.ClearConfiguration: %s", e.message);
1340         dbus_error_free(&e);
1341         goto fail;
1342     }
1343
1344     if ((t = pa_hashmap_get(y->transports, path))) {
1345         pa_log_debug("Clearing transport %s profile %d", t->path, t->profile);
1346         t->device->transports[t->profile] = NULL;
1347         pa_hashmap_remove(y->transports, t->path);
1348         t->state = PA_BLUETOOTH_TRANSPORT_STATE_DISCONNECTED;
1349         pa_hook_fire(&y->hooks[PA_BLUETOOTH_HOOK_TRANSPORT_STATE_CHANGED], t);
1350         transport_free(t);
1351     }
1352
1353     pa_assert_se(r = dbus_message_new_method_return(m));
1354
1355     return r;
1356
1357 fail:
1358     pa_assert_se(r = (dbus_message_new_error(m, "org.bluez.MediaEndpoint.Error.InvalidArguments",
1359                                                         "Unable to clear configuration")));
1360     return r;
1361 }
1362
1363 static uint8_t a2dp_default_bitpool(uint8_t freq, uint8_t mode) {
1364
1365     switch (freq) {
1366         case SBC_SAMPLING_FREQ_16000:
1367         case SBC_SAMPLING_FREQ_32000:
1368             return 53;
1369
1370         case SBC_SAMPLING_FREQ_44100:
1371
1372             switch (mode) {
1373                 case SBC_CHANNEL_MODE_MONO:
1374                 case SBC_CHANNEL_MODE_DUAL_CHANNEL:
1375                     return 31;
1376
1377                 case SBC_CHANNEL_MODE_STEREO:
1378                 case SBC_CHANNEL_MODE_JOINT_STEREO:
1379                     return 53;
1380
1381                 default:
1382                     pa_log_warn("Invalid channel mode %u", mode);
1383                     return 53;
1384             }
1385
1386         case SBC_SAMPLING_FREQ_48000:
1387
1388             switch (mode) {
1389                 case SBC_CHANNEL_MODE_MONO:
1390                 case SBC_CHANNEL_MODE_DUAL_CHANNEL:
1391                     return 29;
1392
1393                 case SBC_CHANNEL_MODE_STEREO:
1394                 case SBC_CHANNEL_MODE_JOINT_STEREO:
1395                     return 51;
1396
1397                 default:
1398                     pa_log_warn("Invalid channel mode %u", mode);
1399                     return 51;
1400             }
1401
1402         default:
1403             pa_log_warn("Invalid sampling freq %u", freq);
1404             return 53;
1405     }
1406 }
1407
1408 static DBusMessage *endpoint_select_configuration(DBusConnection *c, DBusMessage *m, void *userdata) {
1409     pa_bluetooth_discovery *y = userdata;
1410     a2dp_sbc_t *cap, config;
1411     uint8_t *pconf = (uint8_t *) &config;
1412     int i, size;
1413     DBusMessage *r;
1414     DBusError e;
1415
1416     static const struct {
1417         uint32_t rate;
1418         uint8_t cap;
1419     } freq_table[] = {
1420         { 16000U, SBC_SAMPLING_FREQ_16000 },
1421         { 32000U, SBC_SAMPLING_FREQ_32000 },
1422         { 44100U, SBC_SAMPLING_FREQ_44100 },
1423         { 48000U, SBC_SAMPLING_FREQ_48000 }
1424     };
1425
1426     dbus_error_init(&e);
1427
1428     if (!dbus_message_get_args(m, &e, DBUS_TYPE_ARRAY, DBUS_TYPE_BYTE, &cap, &size, DBUS_TYPE_INVALID)) {
1429         pa_log("org.bluez.MediaEndpoint.SelectConfiguration: %s", e.message);
1430         dbus_error_free(&e);
1431         goto fail;
1432     }
1433
1434     if (dbus_message_has_path(m, HFP_AG_ENDPOINT) || dbus_message_has_path(m, HFP_HS_ENDPOINT))
1435         goto done;
1436
1437     pa_assert(size == sizeof(config));
1438
1439     memset(&config, 0, sizeof(config));
1440
1441     /* Find the lowest freq that is at least as high as the requested
1442      * sampling rate */
1443     for (i = 0; (unsigned) i < PA_ELEMENTSOF(freq_table); i++)
1444         if (freq_table[i].rate >= y->core->default_sample_spec.rate && (cap->frequency & freq_table[i].cap)) {
1445             config.frequency = freq_table[i].cap;
1446             break;
1447         }
1448
1449     if ((unsigned) i == PA_ELEMENTSOF(freq_table)) {
1450         for (--i; i >= 0; i--) {
1451             if (cap->frequency & freq_table[i].cap) {
1452                 config.frequency = freq_table[i].cap;
1453                 break;
1454             }
1455         }
1456
1457         if (i < 0) {
1458             pa_log("Not suitable sample rate");
1459             goto fail;
1460         }
1461     }
1462
1463     pa_assert((unsigned) i < PA_ELEMENTSOF(freq_table));
1464
1465     if (y->core->default_sample_spec.channels <= 1) {
1466         if (cap->channel_mode & SBC_CHANNEL_MODE_MONO)
1467             config.channel_mode = SBC_CHANNEL_MODE_MONO;
1468     }
1469
1470     if (y->core->default_sample_spec.channels >= 2) {
1471         if (cap->channel_mode & SBC_CHANNEL_MODE_JOINT_STEREO)
1472             config.channel_mode = SBC_CHANNEL_MODE_JOINT_STEREO;
1473         else if (cap->channel_mode & SBC_CHANNEL_MODE_STEREO)
1474             config.channel_mode = SBC_CHANNEL_MODE_STEREO;
1475         else if (cap->channel_mode & SBC_CHANNEL_MODE_DUAL_CHANNEL)
1476             config.channel_mode = SBC_CHANNEL_MODE_DUAL_CHANNEL;
1477         else if (cap->channel_mode & SBC_CHANNEL_MODE_MONO) {
1478             config.channel_mode = SBC_CHANNEL_MODE_MONO;
1479         } else {
1480             pa_log("No supported channel modes");
1481             goto fail;
1482         }
1483     }
1484
1485     if (cap->block_length & SBC_BLOCK_LENGTH_16)
1486         config.block_length = SBC_BLOCK_LENGTH_16;
1487     else if (cap->block_length & SBC_BLOCK_LENGTH_12)
1488         config.block_length = SBC_BLOCK_LENGTH_12;
1489     else if (cap->block_length & SBC_BLOCK_LENGTH_8)
1490         config.block_length = SBC_BLOCK_LENGTH_8;
1491     else if (cap->block_length & SBC_BLOCK_LENGTH_4)
1492         config.block_length = SBC_BLOCK_LENGTH_4;
1493     else {
1494         pa_log_error("No supported block lengths");
1495         goto fail;
1496     }
1497
1498     if (cap->subbands & SBC_SUBBANDS_8)
1499         config.subbands = SBC_SUBBANDS_8;
1500     else if (cap->subbands & SBC_SUBBANDS_4)
1501         config.subbands = SBC_SUBBANDS_4;
1502     else {
1503         pa_log_error("No supported subbands");
1504         goto fail;
1505     }
1506
1507     if (cap->allocation_method & SBC_ALLOCATION_LOUDNESS)
1508         config.allocation_method = SBC_ALLOCATION_LOUDNESS;
1509     else if (cap->allocation_method & SBC_ALLOCATION_SNR)
1510         config.allocation_method = SBC_ALLOCATION_SNR;
1511
1512     config.min_bitpool = (uint8_t) PA_MAX(MIN_BITPOOL, cap->min_bitpool);
1513     config.max_bitpool = (uint8_t) PA_MIN(a2dp_default_bitpool(config.frequency, config.channel_mode), cap->max_bitpool);
1514
1515 done:
1516     pa_assert_se(r = dbus_message_new_method_return(m));
1517
1518     pa_assert_se(dbus_message_append_args(
1519                                      r,
1520                                      DBUS_TYPE_ARRAY, DBUS_TYPE_BYTE, &pconf, size,
1521                                      DBUS_TYPE_INVALID));
1522
1523     return r;
1524
1525 fail:
1526     pa_assert_se(r = (dbus_message_new_error(m, "org.bluez.MediaEndpoint.Error.InvalidArguments",
1527                                                         "Unable to select configuration")));
1528     return r;
1529 }
1530
1531 static DBusHandlerResult endpoint_handler(DBusConnection *c, DBusMessage *m, void *userdata) {
1532     struct pa_bluetooth_discovery *y = userdata;
1533     DBusMessage *r = NULL;
1534     DBusError e;
1535     const char *path;
1536
1537     pa_assert(y);
1538
1539     pa_log_debug("dbus: interface=%s, path=%s, member=%s\n",
1540             dbus_message_get_interface(m),
1541             dbus_message_get_path(m),
1542             dbus_message_get_member(m));
1543
1544     path = dbus_message_get_path(m);
1545     dbus_error_init(&e);
1546
1547     if (!pa_streq(path, A2DP_SOURCE_ENDPOINT) && !pa_streq(path, A2DP_SINK_ENDPOINT) && !pa_streq(path, HFP_AG_ENDPOINT) && !pa_streq(path, HFP_HS_ENDPOINT))
1548         return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
1549
1550     if (dbus_message_is_method_call(m, "org.freedesktop.DBus.Introspectable", "Introspect")) {
1551         const char *xml = ENDPOINT_INTROSPECT_XML;
1552
1553         pa_assert_se(r = dbus_message_new_method_return(m));
1554         pa_assert_se(dbus_message_append_args(
1555                                  r,
1556                                  DBUS_TYPE_STRING, &xml,
1557                                  DBUS_TYPE_INVALID));
1558
1559     } else if (dbus_message_is_method_call(m, "org.bluez.MediaEndpoint", "SetConfiguration")) {
1560         r = endpoint_set_configuration(c, m, userdata);
1561     } else if (dbus_message_is_method_call(m, "org.bluez.MediaEndpoint", "SelectConfiguration")) {
1562         r = endpoint_select_configuration(c, m, userdata);
1563     } else if (dbus_message_is_method_call(m, "org.bluez.MediaEndpoint", "ClearConfiguration"))
1564         r = endpoint_clear_configuration(c, m, userdata);
1565     else
1566         return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
1567
1568     if (r) {
1569         pa_assert_se(dbus_connection_send(pa_dbus_connection_get(y->connection), r, NULL));
1570         dbus_message_unref(r);
1571     }
1572
1573     return DBUS_HANDLER_RESULT_HANDLED;
1574 }
1575
1576 pa_bluetooth_discovery* pa_bluetooth_discovery_get(pa_core *c) {
1577     DBusError err;
1578     pa_bluetooth_discovery *y;
1579     unsigned i;
1580     static const DBusObjectPathVTable vtable_endpoint = {
1581         .message_function = endpoint_handler,
1582     };
1583
1584     pa_assert(c);
1585
1586     dbus_error_init(&err);
1587
1588     if ((y = pa_shared_get(c, "bluetooth-discovery")))
1589         return pa_bluetooth_discovery_ref(y);
1590
1591     y = pa_xnew0(pa_bluetooth_discovery, 1);
1592     PA_REFCNT_INIT(y);
1593     y->core = c;
1594     y->devices = pa_hashmap_new(pa_idxset_string_hash_func, pa_idxset_string_compare_func);
1595     y->transports = pa_hashmap_new(pa_idxset_string_hash_func, pa_idxset_string_compare_func);
1596     PA_LLIST_HEAD_INIT(pa_dbus_pending, y->pending);
1597
1598     for (i = 0; i < PA_BLUETOOTH_HOOK_MAX; i++)
1599         pa_hook_init(&y->hooks[i], y);
1600
1601     pa_shared_set(c, "bluetooth-discovery", y);
1602
1603     if (setup_dbus(y) < 0)
1604         goto fail;
1605
1606     /* dynamic detection of bluetooth audio devices */
1607     if (!dbus_connection_add_filter(pa_dbus_connection_get(y->connection), filter_cb, y, NULL)) {
1608         pa_log_error("Failed to add filter function");
1609         goto fail;
1610     }
1611     y->filter_added = TRUE;
1612
1613     if (pa_dbus_add_matches(
1614                 pa_dbus_connection_get(y->connection), &err,
1615                 "type='signal',sender='org.freedesktop.DBus',interface='org.freedesktop.DBus',member='NameOwnerChanged',arg0='org.bluez'",
1616                 "type='signal',sender='org.bluez',interface='org.bluez.Manager',member='AdapterAdded'",
1617                 "type='signal',sender='org.bluez',interface='org.bluez.Adapter',member='DeviceRemoved'",
1618                 "type='signal',sender='org.bluez',interface='org.bluez.Adapter',member='DeviceCreated'",
1619                 "type='signal',sender='org.bluez',interface='org.bluez.Device',member='PropertyChanged'",
1620                 "type='signal',sender='org.bluez',interface='org.bluez.Audio',member='PropertyChanged'",
1621                 "type='signal',sender='org.bluez',interface='org.bluez.Headset',member='PropertyChanged'",
1622                 "type='signal',sender='org.bluez',interface='org.bluez.AudioSink',member='PropertyChanged'",
1623                 "type='signal',sender='org.bluez',interface='org.bluez.AudioSource',member='PropertyChanged'",
1624                 "type='signal',sender='org.bluez',interface='org.bluez.HandsfreeGateway',member='PropertyChanged'",
1625                 "type='signal',sender='org.bluez',interface='org.bluez.MediaTransport',member='PropertyChanged'",
1626                 NULL) < 0) {
1627         pa_log("Failed to add D-Bus matches: %s", err.message);
1628         goto fail;
1629     }
1630
1631     pa_assert_se(dbus_connection_register_object_path(pa_dbus_connection_get(y->connection), HFP_AG_ENDPOINT, &vtable_endpoint, y));
1632     pa_assert_se(dbus_connection_register_object_path(pa_dbus_connection_get(y->connection), HFP_HS_ENDPOINT, &vtable_endpoint, y));
1633     pa_assert_se(dbus_connection_register_object_path(pa_dbus_connection_get(y->connection), A2DP_SOURCE_ENDPOINT, &vtable_endpoint, y));
1634     pa_assert_se(dbus_connection_register_object_path(pa_dbus_connection_get(y->connection), A2DP_SINK_ENDPOINT, &vtable_endpoint, y));
1635
1636     list_adapters(y);
1637
1638     return y;
1639
1640 fail:
1641
1642     if (y)
1643         pa_bluetooth_discovery_unref(y);
1644
1645     dbus_error_free(&err);
1646
1647     return NULL;
1648 }
1649
1650 pa_bluetooth_discovery* pa_bluetooth_discovery_ref(pa_bluetooth_discovery *y) {
1651     pa_assert(y);
1652     pa_assert(PA_REFCNT_VALUE(y) > 0);
1653
1654     PA_REFCNT_INC(y);
1655
1656     return y;
1657 }
1658
1659 void pa_bluetooth_discovery_unref(pa_bluetooth_discovery *y) {
1660     unsigned i;
1661
1662     pa_assert(y);
1663     pa_assert(PA_REFCNT_VALUE(y) > 0);
1664
1665     if (PA_REFCNT_DEC(y) > 0)
1666         return;
1667
1668     pa_dbus_free_pending_list(&y->pending);
1669
1670     if (y->devices) {
1671         remove_all_devices(y);
1672         pa_hashmap_free(y->devices, NULL, NULL);
1673     }
1674
1675     if (y->transports) {
1676         pa_assert(pa_hashmap_isempty(y->transports));
1677         pa_hashmap_free(y->transports, NULL, NULL);
1678     }
1679
1680     if (y->connection) {
1681         dbus_connection_unregister_object_path(pa_dbus_connection_get(y->connection), HFP_AG_ENDPOINT);
1682         dbus_connection_unregister_object_path(pa_dbus_connection_get(y->connection), HFP_HS_ENDPOINT);
1683         dbus_connection_unregister_object_path(pa_dbus_connection_get(y->connection), A2DP_SOURCE_ENDPOINT);
1684         dbus_connection_unregister_object_path(pa_dbus_connection_get(y->connection), A2DP_SINK_ENDPOINT);
1685         pa_dbus_remove_matches(pa_dbus_connection_get(y->connection),
1686                                "type='signal',sender='org.freedesktop.DBus',interface='org.freedesktop.DBus',member='NameOwnerChanged',arg0='org.bluez'",
1687                                "type='signal',sender='org.bluez',interface='org.bluez.Manager',member='AdapterAdded'",
1688                                "type='signal',sender='org.bluez',interface='org.bluez.Manager',member='AdapterRemoved'",
1689                                "type='signal',sender='org.bluez',interface='org.bluez.Adapter',member='DeviceRemoved'",
1690                                "type='signal',sender='org.bluez',interface='org.bluez.Adapter',member='DeviceCreated'",
1691                                "type='signal',sender='org.bluez',interface='org.bluez.Device',member='PropertyChanged'",
1692                                "type='signal',sender='org.bluez',interface='org.bluez.Audio',member='PropertyChanged'",
1693                                "type='signal',sender='org.bluez',interface='org.bluez.Headset',member='PropertyChanged'",
1694                                "type='signal',sender='org.bluez',interface='org.bluez.AudioSink',member='PropertyChanged'",
1695                                "type='signal',sender='org.bluez',interface='org.bluez.AudioSource',member='PropertyChanged'",
1696                                "type='signal',sender='org.bluez',interface='org.bluez.HandsfreeGateway',member='PropertyChanged'",
1697                                "type='signal',sender='org.bluez',interface='org.bluez.MediaTransport',member='PropertyChanged'",
1698                                NULL);
1699
1700         if (y->filter_added)
1701             dbus_connection_remove_filter(pa_dbus_connection_get(y->connection), filter_cb, y);
1702
1703         pa_dbus_connection_unref(y->connection);
1704     }
1705
1706     for (i = 0; i < PA_BLUETOOTH_HOOK_MAX; i++)
1707         pa_hook_done(&y->hooks[i]);
1708
1709     if (y->core)
1710         pa_shared_remove(y->core, "bluetooth-discovery");
1711
1712     pa_xfree(y);
1713 }
1714
1715 void pa_bluetooth_discovery_sync(pa_bluetooth_discovery *y) {
1716     pa_assert(y);
1717     pa_assert(PA_REFCNT_VALUE(y) > 0);
1718
1719     pa_dbus_sync_pending_list(&y->pending);
1720 }
1721
1722 pa_hook* pa_bluetooth_discovery_hook(pa_bluetooth_discovery *y, pa_bluetooth_hook_t hook) {
1723     pa_assert(y);
1724     pa_assert(PA_REFCNT_VALUE(y) > 0);
1725
1726     return &y->hooks[hook];
1727 }
1728
1729 const char*pa_bluetooth_get_form_factor(uint32_t class) {
1730     unsigned i;
1731     const char *r;
1732
1733     static const char * const table[] = {
1734         [1] = "headset",
1735         [2] = "hands-free",
1736         [4] = "microphone",
1737         [5] = "speaker",
1738         [6] = "headphone",
1739         [7] = "portable",
1740         [8] = "car",
1741         [10] = "hifi"
1742     };
1743
1744     if (((class >> 8) & 31) != 4)
1745         return NULL;
1746
1747     if ((i = (class >> 2) & 63) > PA_ELEMENTSOF(table))
1748         r =  NULL;
1749     else
1750         r = table[i];
1751
1752     if (!r)
1753         pa_log_debug("Unknown Bluetooth minor device class %u", i);
1754
1755     return r;
1756 }
1757
1758 char *pa_bluetooth_cleanup_name(const char *name) {
1759     char *t, *s, *d;
1760     pa_bool_t space = FALSE;
1761
1762     pa_assert(name);
1763
1764     while ((*name >= 1 && *name <= 32) || *name >= 127)
1765         name++;
1766
1767     t = pa_xstrdup(name);
1768
1769     for (s = d = t; *s; s++) {
1770
1771         if (*s <= 32 || *s >= 127 || *s == '_') {
1772             space = TRUE;
1773             continue;
1774         }
1775
1776         if (space) {
1777             *(d++) = ' ';
1778             space = FALSE;
1779         }
1780
1781         *(d++) = *s;
1782     }
1783
1784     *d = 0;
1785
1786     return t;
1787 }
1788
1789 pa_bool_t pa_bluetooth_uuid_has(pa_bluetooth_uuid *uuids, const char *uuid) {
1790     pa_assert(uuid);
1791
1792     while (uuids) {
1793         if (strcasecmp(uuids->uuid, uuid) == 0)
1794             return TRUE;
1795
1796         uuids = uuids->next;
1797     }
1798
1799     return FALSE;
1800 }