src/empathy-mic-monitor.c

   1 /*
   2  * Copyright (C) 2011 Collabora Ltd.
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Lesser General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2.1 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Lesser General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser General Public
  15  * License along with this library; if not, write to the Free Software
  16  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  17  *
  18  */
  19
  20 #include "config.h"
  21 #include "empathy-mic-monitor.h"
  22
  23 #include <pulse/glib-mainloop.h>
  24 #include <tp-account-widgets/tpaw-utils.h>
  25
  26 #include "empathy-utils.h"
  27
  28 #define DEBUG_FLAG EMPATHY_DEBUG_VOIP
  29 #include "empathy-debug.h"
  30
  31 enum
  32 {
  33   MICROPHONE_ADDED,
  34   MICROPHONE_REMOVED,
  35   MICROPHONE_CHANGED,
  36   LAST_SIGNAL
  37 };
  38
  39 static guint signals[LAST_SIGNAL] = {0};
  40
  41 struct _EmpathyMicMonitorPrivate
  42 {
  43   pa_glib_mainloop *loop;
  44   pa_context *context;
  45   GQueue *operations;
  46 };
  47
  48 G_DEFINE_TYPE (EmpathyMicMonitor, empathy_mic_monitor, G_TYPE_OBJECT);
  49
  50 typedef void (*OperationFunc) (EmpathyMicMonitor *, GSimpleAsyncResult *);
  51
  52 typedef struct
  53 {
  54   OperationFunc func;
  55   GSimpleAsyncResult *result;
  56 } Operation;
  57
  58 static Operation *
  59 operation_new (OperationFunc func,
  60     GSimpleAsyncResult *result)
  61 {
  62   Operation *o = g_slice_new0 (Operation);
  63
  64   o->func = func;
  65   o->result = result;
  66
  67   return o;
  68 }
  69
  70 static void
  71 operation_free (Operation *o,
  72     gboolean cancelled)
  73 {
  74   if (cancelled)
  75     {
  76       g_simple_async_result_set_error (o->result,
  77           G_IO_ERROR, G_IO_ERROR_CANCELLED,
  78           "The microphone monitor was disposed");
  79       g_simple_async_result_complete (o->result);
  80       g_object_unref (o->result);
  81     }
  82
  83   g_slice_free (Operation, o);
  84 }
  85
  86 static void
  87 operations_run (EmpathyMicMonitor *self)
  88 {
  89   EmpathyMicMonitorPrivate *priv = self->priv;
  90   pa_context_state_t state = pa_context_get_state (priv->context);
  91   GList *l;
  92
  93   if (state != PA_CONTEXT_READY)
  94     return;
  95
  96   for (l = priv->operations->head; l != NULL; l = l->next)
  97     {
  98       Operation *o = l->data;
  99
 100       o->func (self, o->result);
 101
 102       operation_free (o, FALSE);
 103     }
 104
 105   g_queue_clear (priv->operations);
 106 }
 107
 108 static void
 109 empathy_mic_monitor_source_output_info_cb (pa_context *context,
 110     const pa_source_output_info *info,
 111     int eol,
 112     void *userdata)
 113 {
 114   EmpathyMicMonitor *self = userdata;
 115
 116   if (eol)
 117     return;
 118
 119   g_signal_emit (self, signals[MICROPHONE_CHANGED], 0,
 120       info->index, info->source);
 121 }
 122
 123 static void
 124 empathy_mic_monitor_source_info_cb (pa_context *context,
 125     const pa_source_info *info,
 126     int eol,
 127     void *userdata)
 128 {
 129   EmpathyMicMonitor *self = userdata;
 130   gboolean is_monitor;
 131
 132   if (eol)
 133     return;
 134
 135   is_monitor = (info->monitor_of_sink != PA_INVALID_INDEX);
 136
 137   g_signal_emit (self, signals[MICROPHONE_ADDED], 0,
 138       info->index, info->name, info->description, is_monitor);
 139 }
 140
 141 static void
 142 empathy_mic_monitor_pa_event_cb (pa_context *context,
 143     pa_subscription_event_type_t type,
 144     uint32_t idx,
 145     void *userdata)
 146 {
 147   EmpathyMicMonitor *self = userdata;
 148
 149   if ((type & PA_SUBSCRIPTION_EVENT_FACILITY_MASK) == PA_SUBSCRIPTION_EVENT_SOURCE_OUTPUT
 150       && (type & PA_SUBSCRIPTION_EVENT_TYPE_MASK) == PA_SUBSCRIPTION_EVENT_CHANGE)
 151     {
 152       /* Microphone in the source output has changed */
 153       pa_context_get_source_output_info (context, idx,
 154           empathy_mic_monitor_source_output_info_cb, self);
 155     }
 156   else if ((type & PA_SUBSCRIPTION_EVENT_FACILITY_MASK) == PA_SUBSCRIPTION_EVENT_SOURCE
 157       && (type & PA_SUBSCRIPTION_EVENT_TYPE_MASK) == PA_SUBSCRIPTION_EVENT_REMOVE)
 158     {
 159       /* A mic has been removed */
 160       g_signal_emit (self, signals[MICROPHONE_REMOVED], 0, idx);
 161     }
 162   else if ((type & PA_SUBSCRIPTION_EVENT_FACILITY_MASK) == PA_SUBSCRIPTION_EVENT_SOURCE
 163       && (type & PA_SUBSCRIPTION_EVENT_TYPE_MASK) == PA_SUBSCRIPTION_EVENT_NEW)
 164     {
 165       /* A mic has been plugged in */
 166       pa_context_get_source_info_by_index (context, idx,
 167           empathy_mic_monitor_source_info_cb, self);
 168     }
 169 }
 170
 171 static void
 172 empathy_mic_monitor_pa_subscribe_cb (pa_context *context,
 173     int success,
 174     void *userdata)
 175 {
 176   if (!success)
 177     DEBUG ("Failed to subscribe to PulseAudio events");
 178 }
 179
 180 static void
 181 empathy_mic_monitor_pa_state_change_cb (pa_context *context,
 182     void *userdata)
 183 {
 184   EmpathyMicMonitor *self = userdata;
 185   EmpathyMicMonitorPrivate *priv = self->priv;
 186   pa_context_state_t state = pa_context_get_state (priv->context);
 187
 188   if (state == PA_CONTEXT_READY)
 189     {
 190       /* Listen to pulseaudio events so we know when sources are
 191        * added and when the microphone is changed. */
 192       pa_context_set_subscribe_callback (priv->context,
 193           empathy_mic_monitor_pa_event_cb, self);
 194       pa_context_subscribe (priv->context,
 195           PA_SUBSCRIPTION_MASK_SOURCE | PA_SUBSCRIPTION_MASK_SOURCE_OUTPUT,
 196           empathy_mic_monitor_pa_subscribe_cb, NULL);
 197
 198       operations_run (self);
 199     }
 200 }
 201
 202 static void
 203 empathy_mic_monitor_init (EmpathyMicMonitor *self)
 204 {
 205   EmpathyMicMonitorPrivate *priv = G_TYPE_INSTANCE_GET_PRIVATE (self,
 206     EMPATHY_TYPE_MIC_MONITOR, EmpathyMicMonitorPrivate);
 207
 208   self->priv = priv;
 209 }
 210
 211 static void
 212 empathy_mic_monitor_constructed (GObject *obj)
 213 {
 214   EmpathyMicMonitor *self = EMPATHY_MIC_MONITOR (obj);
 215   EmpathyMicMonitorPrivate *priv = self->priv;
 216
 217   /* PulseAudio stuff: We need to create a dummy pa_glib_mainloop* so
 218    * Pulse can use the mainloop that GTK has created for us. */
 219   priv->loop = pa_glib_mainloop_new (NULL);
 220   priv->context = pa_context_new (pa_glib_mainloop_get_api (priv->loop),
 221       "EmpathyMicMonitor");
 222
 223   /* Finally listen for state changes so we know when we've
 224    * connected. */
 225   pa_context_set_state_callback (priv->context,
 226       empathy_mic_monitor_pa_state_change_cb, obj);
 227   pa_context_connect (priv->context, NULL, 0, NULL);
 228
 229   priv->operations = g_queue_new ();
 230 }
 231
 232 static void
 233 empathy_mic_monitor_dispose (GObject *obj)
 234 {
 235   EmpathyMicMonitor *self = EMPATHY_MIC_MONITOR (obj);
 236   EmpathyMicMonitorPrivate *priv = self->priv;
 237
 238   g_queue_foreach (priv->operations, (GFunc) operation_free,
 239       GUINT_TO_POINTER (TRUE));
 240   g_queue_free (priv->operations);
 241
 242   if (priv->context != NULL)
 243     pa_context_unref (priv->context);
 244   priv->context = NULL;
 245
 246   if (priv->loop != NULL)
 247     pa_glib_mainloop_free (priv->loop);
 248   priv->loop = NULL;
 249
 250   G_OBJECT_CLASS (empathy_mic_monitor_parent_class)->dispose (obj);
 251 }
 252
 253 static void
 254 empathy_mic_monitor_class_init (EmpathyMicMonitorClass *klass)
 255 {
 256   GObjectClass *object_class = G_OBJECT_CLASS (klass);
 257
 258   object_class->constructed = empathy_mic_monitor_constructed;
 259   object_class->dispose = empathy_mic_monitor_dispose;
 260
 261   signals[MICROPHONE_ADDED] = g_signal_new ("microphone-added",
 262     G_TYPE_FROM_CLASS (klass),
 263     G_SIGNAL_RUN_LAST,
 264     0,
 265     NULL, NULL,
 266     g_cclosure_marshal_generic,
 267     G_TYPE_NONE, 4, G_TYPE_UINT, G_TYPE_STRING, G_TYPE_STRING, G_TYPE_BOOLEAN);
 268
 269   signals[MICROPHONE_REMOVED] = g_signal_new ("microphone-removed",
 270     G_TYPE_FROM_CLASS (klass),
 271     G_SIGNAL_RUN_LAST,
 272     0,
 273     NULL, NULL,
 274     g_cclosure_marshal_generic,
 275     G_TYPE_NONE, 1, G_TYPE_UINT);
 276
 277   signals[MICROPHONE_CHANGED] = g_signal_new ("microphone-changed",
 278     G_TYPE_FROM_CLASS (klass),
 279     G_SIGNAL_RUN_LAST,
 280     0,
 281     NULL, NULL,
 282     g_cclosure_marshal_generic,
 283     G_TYPE_NONE, 2, G_TYPE_UINT, G_TYPE_UINT);
 284
 285   g_type_class_add_private (object_class, sizeof (EmpathyMicMonitorPrivate));
 286 }
 287
 288 EmpathyMicMonitor *
 289 empathy_mic_monitor_new (void)
 290 {
 291   return g_object_new (EMPATHY_TYPE_MIC_MONITOR,
 292       NULL);
 293 }
 294
 295 /* operation: list microphones */
 296 static void
 297 operation_list_microphones_free (gpointer data)
 298 {
 299   GQueue *queue = data;
 300   GList *l;
 301
 302   for (l = queue->head; l != NULL; l = l->next)
 303     {
 304       EmpathyMicrophone *mic = l->data;
 305
 306       g_free (mic->name);
 307       g_free (mic->description);
 308       g_slice_free (EmpathyMicrophone, mic);
 309     }
 310
 311   g_queue_free (queue);
 312 }
 313
 314 static void
 315 operation_list_microphones_cb (pa_context *context,
 316     const pa_source_info *info,
 317     int eol,
 318     void *userdata)
 319 {
 320   GSimpleAsyncResult *result = userdata;
 321   EmpathyMicrophone *mic;
 322   GQueue *queue;
 323
 324   if (eol)
 325     {
 326       g_simple_async_result_complete (result);
 327       g_object_unref (result);
 328       return;
 329     }
 330
 331   mic = g_slice_new0 (EmpathyMicrophone);
 332   mic->index = info->index;
 333   mic->name = g_strdup (info->name);
 334   mic->description = g_strdup (info->description);
 335   mic->is_monitor = (info->monitor_of_sink != PA_INVALID_INDEX);
 336
 337   /* add it to the queue */
 338   queue = g_simple_async_result_get_op_res_gpointer (result);
 339   g_queue_push_tail (queue, mic);
 340 }
 341
 342 static void
 343 operation_list_microphones (EmpathyMicMonitor *self,
 344     GSimpleAsyncResult *result)
 345 {
 346   EmpathyMicMonitorPrivate *priv = self->priv;
 347
 348   g_assert_cmpuint (pa_context_get_state (priv->context), ==, PA_CONTEXT_READY);
 349
 350   g_simple_async_result_set_op_res_gpointer (result, g_queue_new (),
 351       operation_list_microphones_free);
 352
 353   pa_context_get_source_info_list (priv->context,
 354       operation_list_microphones_cb, result);
 355 }
 356
 357 void
 358 empathy_mic_monitor_list_microphones_async (EmpathyMicMonitor *self,
 359     GAsyncReadyCallback callback,
 360     gpointer user_data)
 361 {
 362 EmpathyMicMonitorPrivate *priv = self->priv;
 363   Operation *operation;
 364   GSimpleAsyncResult *simple;
 365
 366   simple = g_simple_async_result_new (G_OBJECT (self), callback, user_data,
 367       empathy_mic_monitor_list_microphones_async);
 368
 369   operation = operation_new (operation_list_microphones, simple);
 370   g_queue_push_tail (priv->operations, operation);
 371
 372   /* gogogogo */
 373   operations_run (self);
 374 }
 375
 376 const GList *
 377 empathy_mic_monitor_list_microphones_finish (EmpathyMicMonitor *src,
 378     GAsyncResult *result,
 379     GError **error)
 380 {
 381   GSimpleAsyncResult *simple = G_SIMPLE_ASYNC_RESULT (result);
 382   GQueue *queue;
 383
 384   if (g_simple_async_result_propagate_error (simple, error))
 385       return NULL;
 386
 387   g_return_val_if_fail (g_simple_async_result_is_valid (result,
 388           G_OBJECT (src), empathy_mic_monitor_list_microphones_async),
 389       NULL);
 390
 391   queue = g_simple_async_result_get_op_res_gpointer (simple);
 392   return queue->head;
 393 }
 394
 395 /* operation: change microphone */
 396 typedef struct
 397 {
 398   guint source_output_idx;
 399   guint source_idx;
 400 } ChangeMicrophoneData;
 401
 402 static void
 403 operation_change_microphone_cb (pa_context *context,
 404     int success,
 405     void *userdata)
 406 {
 407   GSimpleAsyncResult *result = userdata;
 408
 409   if (!success)
 410     {
 411       g_simple_async_result_set_error (result, G_IO_ERROR, G_IO_ERROR_FAILED,
 412           "Failed to change microphone. Reason unknown.");
 413     }
 414
 415   g_simple_async_result_complete (result);
 416   g_object_unref (result);
 417 }
 418
 419 static void
 420 operation_change_microphone (EmpathyMicMonitor *self,
 421     GSimpleAsyncResult *result)
 422 {
 423   EmpathyMicMonitorPrivate *priv = self->priv;
 424   ChangeMicrophoneData *data;
 425
 426   g_assert_cmpuint (pa_context_get_state (priv->context), ==, PA_CONTEXT_READY);
 427
 428   data = g_simple_async_result_get_op_res_gpointer (result);
 429
 430   pa_context_move_source_output_by_index (priv->context,
 431       data->source_output_idx, data->source_idx,
 432       operation_change_microphone_cb, result);
 433
 434   g_simple_async_result_set_op_res_gpointer (result, NULL, NULL);
 435   g_slice_free (ChangeMicrophoneData, data);
 436 }
 437
 438 void
 439 empathy_mic_monitor_change_microphone_async (EmpathyMicMonitor *self,
 440     guint source_output_idx,
 441     guint source_idx,
 442     GAsyncReadyCallback callback,
 443     gpointer user_data)
 444 {
 445   EmpathyMicMonitorPrivate *priv = self->priv;
 446   GSimpleAsyncResult *simple;
 447   Operation *operation;
 448   ChangeMicrophoneData *data;
 449
 450   simple = g_simple_async_result_new (G_OBJECT (self), callback, user_data,
 451       empathy_mic_monitor_change_microphone_async);
 452
 453   if (source_output_idx == PA_INVALID_INDEX)
 454     {
 455       g_simple_async_result_set_error (simple, G_IO_ERROR, G_IO_ERROR_FAILED,
 456           "Invalid source output index");
 457       g_simple_async_result_complete_in_idle (simple);
 458       g_object_unref (simple);
 459       return;
 460     }
 461
 462   data = g_slice_new0 (ChangeMicrophoneData);
 463   data->source_idx = source_idx;
 464   data->source_output_idx = source_output_idx;
 465   g_simple_async_result_set_op_res_gpointer (simple, data, NULL);
 466
 467   operation = operation_new (operation_change_microphone, simple);
 468   g_queue_push_tail (priv->operations, operation);
 469
 470   /* gogogogo */
 471   operations_run (self);
 472 }
 473
 474 gboolean
 475 empathy_mic_monitor_change_microphone_finish (EmpathyMicMonitor *self,
 476     GAsyncResult *result,
 477     GError **error)
 478 {
 479   tpaw_implement_finish_void (self,
 480       empathy_mic_monitor_change_microphone_async);
 481 }
 482
 483 /* operation: get current mic */
 484 static void
 485 empathy_mic_monitor_get_current_mic_cb (pa_context *context,
 486     const pa_source_output_info *info,
 487     int eol,
 488     void *userdata)
 489 {
 490   GSimpleAsyncResult *result = userdata;
 491
 492   if (eol)
 493     return;
 494
 495   if (g_simple_async_result_get_op_res_gpointer (result) != NULL)
 496     return;
 497
 498   g_simple_async_result_set_op_res_gpointer (result,
 499       GUINT_TO_POINTER (info->source), NULL);
 500   g_simple_async_result_complete (result);
 501   g_object_unref (result);
 502 }
 503
 504 static void
 505 operation_get_current_mic (EmpathyMicMonitor *self,
 506     GSimpleAsyncResult *result)
 507 {
 508   EmpathyMicMonitorPrivate *priv = self->priv;
 509   guint source_output_idx;
 510
 511   g_assert_cmpuint (pa_context_get_state (priv->context), ==, PA_CONTEXT_READY);
 512
 513   source_output_idx = GPOINTER_TO_UINT (
 514       g_simple_async_result_get_op_res_gpointer (result));
 515
 516   /* unset this so we can use it in the cb */
 517   g_simple_async_result_set_op_res_gpointer (result, NULL, NULL);
 518
 519   pa_context_get_source_output_info (priv->context, source_output_idx,
 520       empathy_mic_monitor_get_current_mic_cb, result);
 521 }
 522
 523 void
 524 empathy_mic_monitor_get_current_mic_async (EmpathyMicMonitor *self,
 525     guint source_output_idx,
 526     GAsyncReadyCallback callback,
 527     gpointer user_data)
 528 {
 529   EmpathyMicMonitorPrivate *priv = self->priv;
 530   Operation *operation;
 531   GSimpleAsyncResult *simple;
 532
 533   simple = g_simple_async_result_new (G_OBJECT (self), callback, user_data,
 534       empathy_mic_monitor_get_current_mic_async);
 535
 536   g_simple_async_result_set_op_res_gpointer (simple,
 537       GUINT_TO_POINTER (source_output_idx), NULL);
 538
 539   operation = operation_new (operation_get_current_mic, simple);
 540   g_queue_push_tail (priv->operations, operation);
 541
 542   operations_run (self);
 543 }
 544
 545 guint
 546 empathy_mic_monitor_get_current_mic_finish (EmpathyMicMonitor *self,
 547     GAsyncResult *result,
 548     GError **error)
 549 {
 550   GSimpleAsyncResult *simple = G_SIMPLE_ASYNC_RESULT (result);
 551
 552   if (g_simple_async_result_propagate_error (simple, error))
 553     return PA_INVALID_INDEX;
 554
 555   g_return_val_if_fail (g_simple_async_result_is_valid (result,
 556           G_OBJECT (self), empathy_mic_monitor_get_current_mic_async),
 557       PA_INVALID_INDEX);
 558
 559   return GPOINTER_TO_UINT (
 560       g_simple_async_result_get_op_res_gpointer (simple));
 561 }
 562
 563 /* operation: get default */
 564 static void
 565 empathy_mic_monitor_get_default_cb (pa_context *context,
 566     const pa_server_info *info,
 567     void *userdata)
 568 {
 569   GSimpleAsyncResult *result = userdata;
 570
 571   /* TODO: it would be nice in future, for consistency, if this gave
 572    * the source idx instead of the name. */
 573   g_simple_async_result_set_op_res_gpointer (result,
 574       g_strdup (info->default_source_name), g_free);
 575   g_simple_async_result_complete (result);
 576   g_object_unref (result);
 577 }
 578
 579 static void
 580 operation_get_default (EmpathyMicMonitor *self,
 581     GSimpleAsyncResult *result)
 582 {
 583   EmpathyMicMonitorPrivate *priv = self->priv;
 584
 585   g_assert_cmpuint (pa_context_get_state (priv->context), ==, PA_CONTEXT_READY);
 586
 587   /* unset this so we can use it in the cb */
 588   g_simple_async_result_set_op_res_gpointer (result, NULL, NULL);
 589
 590   pa_context_get_server_info (priv->context, empathy_mic_monitor_get_default_cb,
 591       result);
 592 }
 593
 594 void
 595 empathy_mic_monitor_get_default_async (EmpathyMicMonitor *self,
 596     GAsyncReadyCallback callback,
 597     gpointer user_data)
 598 {
 599   EmpathyMicMonitorPrivate *priv = self->priv;
 600   Operation *operation;
 601   GSimpleAsyncResult *simple;
 602
 603   simple = g_simple_async_result_new (G_OBJECT (self), callback, user_data,
 604       empathy_mic_monitor_get_default_async);
 605
 606   operation = operation_new (operation_get_default, simple);
 607   g_queue_push_tail (priv->operations, operation);
 608
 609   operations_run (self);
 610 }
 611
 612 const gchar *
 613 empathy_mic_monitor_get_default_finish (EmpathyMicMonitor *self,
 614     GAsyncResult *result,
 615     GError **error)
 616 {
 617   tpaw_implement_finish_return_pointer (self,
 618       empathy_mic_monitor_get_default_async);
 619 }
 620
 621 /* operation: set default */
 622 static void
 623 empathy_mic_monitor_set_default_cb (pa_context *c,
 624     int success,
 625     void *userdata)
 626 {
 627   GSimpleAsyncResult *result = userdata;
 628
 629   if (!success)
 630     {
 631       g_simple_async_result_set_error (result,
 632           G_IO_ERROR, G_IO_ERROR_FAILED,
 633           "The operation failed for an unknown reason");
 634     }
 635
 636   g_simple_async_result_complete (result);
 637   g_object_unref (result);
 638 }
 639
 640 static void
 641 operation_set_default (EmpathyMicMonitor *self,
 642     GSimpleAsyncResult *result)
 643 {
 644   EmpathyMicMonitorPrivate *priv = self->priv;
 645   gchar *name;
 646
 647   g_assert_cmpuint (pa_context_get_state (priv->context), ==, PA_CONTEXT_READY);
 648
 649   name = g_simple_async_result_get_op_res_gpointer (result);
 650
 651   pa_context_set_default_source (priv->context, name,
 652       empathy_mic_monitor_set_default_cb, result);
 653 }
 654
 655 void
 656 empathy_mic_monitor_set_default_async (EmpathyMicMonitor *self,
 657     const gchar *name,
 658     GAsyncReadyCallback callback,
 659     gpointer user_data)
 660 {
 661   EmpathyMicMonitorPrivate *priv = self->priv;
 662   Operation *operation;
 663   GSimpleAsyncResult *simple;
 664
 665   simple = g_simple_async_result_new (G_OBJECT (self), callback, user_data,
 666       empathy_mic_monitor_set_default_async);
 667
 668   g_simple_async_result_set_op_res_gpointer (simple, g_strdup (name), g_free);
 669
 670   operation = operation_new (operation_set_default, simple);
 671   g_queue_push_tail (priv->operations, operation);
 672
 673   operations_run (self);
 674 }
 675
 676 gboolean
 677 empathy_mic_monitor_set_default_finish (EmpathyMicMonitor *self,
 678     GAsyncResult *result,
 679     GError **error)
 680 {
 681   tpaw_implement_finish_void (self,
 682       empathy_mic_monitor_set_default_async);
 683 }