libempathy/empathy-tp-call.c

   1 /*
   2  * Copyright (C) 2007 Elliot Fairweather
   3  * Copyright (C) 2007-2008 Collabora Ltd.
   4  *
   5  * This library is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU Lesser General Public
   7  * License as published by the Free Software Foundation; either
   8  * version 2.1 of the License, or (at your option) any later version.
   9  *
  10  * This library is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * Lesser General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU Lesser General Public
  16  * License along with this library; if not, write to the Free Software
  17  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  18  *
  19  * Authors: Elliot Fairweather <elliot.fairweather@collabora.co.uk>
  20  *          Xavier Claessens <xclaesse@gmail.com>
  21  */
  22
  23 #include <string.h>
  24
  25 #include <telepathy-glib/proxy-subclass.h>
  26 #include <telepathy-glib/dbus.h>
  27 #include <telepathy-glib/interfaces.h>
  28
  29 #include "empathy-tp-call.h"
  30 #include "empathy-tp-contact-factory.h"
  31 #include "empathy-utils.h"
  32
  33 #define DEBUG_FLAG EMPATHY_DEBUG_TP
  34 #include "empathy-debug.h"
  35
  36 #define GET_PRIV(obj) EMPATHY_GET_PRIV (obj, EmpathyTpCall)
  37 typedef struct
  38 {
  39   gboolean dispose_has_run;
  40   TpChannel *channel;
  41   EmpathyContact *contact;
  42   gboolean is_incoming;
  43   guint status;
  44
  45   EmpathyTpCallStream *audio;
  46   EmpathyTpCallStream *video;
  47 } EmpathyTpCallPriv;
  48
  49 enum
  50 {
  51   PROP_0,
  52   PROP_CHANNEL,
  53   PROP_CONTACT,
  54   PROP_IS_INCOMING,
  55   PROP_STATUS,
  56   PROP_AUDIO_STREAM,
  57   PROP_VIDEO_STREAM
  58 };
  59
  60 G_DEFINE_TYPE (EmpathyTpCall, empathy_tp_call, G_TYPE_OBJECT)
  61
  62 static void
  63 tp_call_add_stream (EmpathyTpCall *call,
  64                     guint stream_id,
  65                     guint contact_handle,
  66                     guint stream_type,
  67                     guint stream_state,
  68                     guint stream_direction)
  69 {
  70   EmpathyTpCallPriv *priv = GET_PRIV (call);
  71
  72   switch (stream_type)
  73     {
  74       case TP_MEDIA_STREAM_TYPE_AUDIO:
  75         DEBUG ("Audio stream - id: %d, state: %d, direction: %d",
  76             stream_id, stream_state, stream_direction);
  77         priv->audio->exists = TRUE;
  78         priv->audio->id = stream_id;
  79         priv->audio->state = stream_state;
  80         priv->audio->direction = stream_direction;
  81         g_object_notify (G_OBJECT (call), "audio-stream");
  82         break;
  83       case TP_MEDIA_STREAM_TYPE_VIDEO:
  84         DEBUG ("Video stream - id: %d, state: %d, direction: %d",
  85             stream_id, stream_state, stream_direction);
  86         priv->video->exists = TRUE;
  87         priv->video->id = stream_id;
  88         priv->video->state = stream_state;
  89         priv->video->direction = stream_direction;
  90         g_object_notify (G_OBJECT (call), "video-stream");
  91         break;
  92       default:
  93         DEBUG ("Unknown stream type: %d", stream_type);
  94     }
  95 }
  96
  97 static void
  98 tp_call_stream_added_cb (TpChannel *channel,
  99                          guint stream_id,
 100                          guint contact_handle,
 101                          guint stream_type,
 102                          gpointer user_data,
 103                          GObject *call)
 104 {
 105   DEBUG ("Stream added - stream id: %d, contact handle: %d, stream type: %d",
 106       stream_id, contact_handle, stream_type);
 107
 108   tp_call_add_stream (EMPATHY_TP_CALL (call), stream_id, contact_handle,
 109       stream_type, TP_MEDIA_STREAM_STATE_DISCONNECTED,
 110       TP_MEDIA_STREAM_DIRECTION_NONE);
 111 }
 112
 113 static void
 114 tp_call_stream_removed_cb (TpChannel *channel,
 115                            guint stream_id,
 116                            gpointer user_data,
 117                            GObject *call)
 118 {
 119   EmpathyTpCallPriv *priv = GET_PRIV (call);
 120
 121   DEBUG ("Stream removed - stream id: %d", stream_id);
 122
 123   if (stream_id == priv->audio->id)
 124     {
 125       priv->audio->exists = FALSE;
 126       g_object_notify (call, "audio-stream");
 127     }
 128   else if (stream_id == priv->video->id)
 129     {
 130       priv->video->exists = FALSE;
 131       g_object_notify (call, "video-stream");
 132     }
 133 }
 134
 135 static void
 136 tp_call_stream_state_changed_cb (TpChannel *proxy,
 137                                  guint stream_id,
 138                                  guint stream_state,
 139                                  gpointer user_data,
 140                                  GObject *call)
 141 {
 142   EmpathyTpCallPriv *priv = GET_PRIV (call);
 143
 144   DEBUG ("Stream state changed - stream id: %d, state state: %d",
 145       stream_id, stream_state);
 146
 147   if (stream_id == priv->audio->id)
 148     {
 149       priv->audio->state = stream_state;
 150       g_object_notify (call, "audio-stream");
 151     }
 152   else if (stream_id == priv->video->id)
 153     {
 154       priv->video->state = stream_state;
 155       g_object_notify (call, "video-stream");
 156     }
 157 }
 158
 159 static void
 160 tp_call_stream_direction_changed_cb (TpChannel *channel,
 161                                      guint stream_id,
 162                                      guint stream_direction,
 163                                      guint pending_flags,
 164                                      gpointer user_data,
 165                                      GObject *call)
 166 {
 167   EmpathyTpCallPriv *priv = GET_PRIV (call);
 168
 169   DEBUG ("Stream direction changed - stream: %d, direction: %d",
 170       stream_id, stream_direction);
 171
 172   if (stream_id == priv->audio->id)
 173     {
 174       priv->audio->direction = stream_direction;
 175       g_object_notify (call, "audio-stream");
 176     }
 177   else if (stream_id == priv->video->id)
 178     {
 179       priv->video->direction = stream_direction;
 180       g_object_notify (call, "video-stream");
 181     }
 182 }
 183
 184 static void
 185 tp_call_request_streams_cb (TpChannel *channel,
 186                             const GPtrArray *streams,
 187                             const GError *error,
 188                             gpointer user_data,
 189                             GObject *call)
 190 {
 191   guint i;
 192
 193   if (error)
 194     {
 195       DEBUG ("Error requesting streams: %s", error->message);
 196       return;
 197     }
 198
 199   for (i = 0; i < streams->len; i++)
 200     {
 201       GValueArray *values;
 202       guint stream_id;
 203       guint contact_handle;
 204       guint stream_type;
 205       guint stream_state;
 206       guint stream_direction;
 207
 208       values = g_ptr_array_index (streams, i);
 209       stream_id = g_value_get_uint (g_value_array_get_nth (values, 0));
 210       contact_handle = g_value_get_uint (g_value_array_get_nth (values, 1));
 211       stream_type = g_value_get_uint (g_value_array_get_nth (values, 2));
 212       stream_state = g_value_get_uint (g_value_array_get_nth (values, 3));
 213       stream_direction = g_value_get_uint (g_value_array_get_nth (values, 4));
 214
 215       tp_call_add_stream (EMPATHY_TP_CALL (call), stream_id, contact_handle,
 216           stream_type, stream_state, stream_direction);
 217   }
 218 }
 219
 220 static void
 221 tp_call_request_streams_for_capabilities (EmpathyTpCall *call,
 222                                           EmpathyCapabilities capabilities)
 223 {
 224   EmpathyTpCallPriv *priv = GET_PRIV (call);
 225   GArray *stream_types;
 226   guint handle;
 227   guint stream_type;
 228
 229   if (capabilities == EMPATHY_CAPABILITIES_UNKNOWN)
 230       capabilities = EMPATHY_CAPABILITIES_AUDIO | EMPATHY_CAPABILITIES_VIDEO;
 231
 232   DEBUG ("Requesting new stream for capabilities %d",
 233       capabilities);
 234
 235   stream_types = g_array_new (FALSE, FALSE, sizeof (guint));
 236   handle = empathy_contact_get_handle (priv->contact);
 237
 238   if (capabilities & EMPATHY_CAPABILITIES_AUDIO)
 239     {
 240       stream_type = TP_MEDIA_STREAM_TYPE_AUDIO;
 241       g_array_append_val (stream_types, stream_type);
 242     }
 243   if (capabilities & EMPATHY_CAPABILITIES_VIDEO)
 244     {
 245       stream_type = TP_MEDIA_STREAM_TYPE_VIDEO;
 246       g_array_append_val (stream_types, stream_type);
 247     }
 248
 249   tp_cli_channel_type_streamed_media_call_request_streams (priv->channel, -1,
 250       handle, stream_types, tp_call_request_streams_cb, NULL, NULL,
 251       G_OBJECT (call));
 252
 253   g_array_free (stream_types, TRUE);
 254 }
 255
 256 static void
 257 tp_call_got_contact_cb (EmpathyTpContactFactory *factory,
 258                         GList *contacts,
 259                         gpointer user_data,
 260                         GObject *call)
 261 {
 262   EmpathyTpCallPriv *priv = GET_PRIV (call);
 263
 264   priv->contact = g_object_ref (contacts->data);
 265   priv->is_incoming = TRUE;
 266   priv->status = EMPATHY_TP_CALL_STATUS_PENDING;
 267   g_object_notify (G_OBJECT (call), "is-incoming");
 268   g_object_notify (G_OBJECT (call), "contact");
 269   g_object_notify (G_OBJECT (call), "status");
 270 }
 271
 272 static void
 273 tp_call_update_status (EmpathyTpCall *call)
 274 {
 275   EmpathyTpCallPriv *priv = GET_PRIV (call);
 276   TpHandle self_handle;
 277   const TpIntSet *set;
 278   TpIntSetIter iter;
 279
 280   g_object_ref (call);
 281
 282   self_handle = tp_channel_group_get_self_handle (priv->channel);
 283   set = tp_channel_group_get_members (priv->channel);
 284   tp_intset_iter_init (&iter, set);
 285   while (tp_intset_iter_next (&iter))
 286     {
 287       if (priv->contact == NULL && iter.element != self_handle)
 288         {
 289           EmpathyTpContactFactory *factory;
 290           TpConnection *connection;
 291
 292           /* We found the remote contact */
 293           connection = tp_channel_borrow_connection (priv->channel);
 294           factory = empathy_tp_contact_factory_dup_singleton (connection);
 295           empathy_tp_contact_factory_get_from_handles (factory, 1,
 296               &iter.element, tp_call_got_contact_cb, NULL, NULL,
 297               G_OBJECT (call));
 298           g_object_unref (factory);
 299         }
 300
 301       if (priv->status == EMPATHY_TP_CALL_STATUS_PENDING &&
 302           ((priv->is_incoming && iter.element == self_handle) ||
 303            (!priv->is_incoming && iter.element != self_handle)))
 304         {
 305           priv->status = EMPATHY_TP_CALL_STATUS_ACCEPTED;
 306           g_object_notify (G_OBJECT (call), "status");
 307         }
 308     }
 309
 310   g_object_unref (call);
 311 }
 312
 313 void
 314 empathy_tp_call_to (EmpathyTpCall *call, EmpathyContact *contact)
 315 {
 316   EmpathyTpCallPriv *priv = GET_PRIV (call);
 317
 318   priv->contact = g_object_ref (contact);
 319   priv->is_incoming = FALSE;
 320   priv->status = EMPATHY_TP_CALL_STATUS_PENDING;
 321   g_object_notify (G_OBJECT (call), "is-incoming");
 322   g_object_notify (G_OBJECT (call), "contact");
 323   g_object_notify (G_OBJECT (call), "status");
 324   tp_call_request_streams_for_capabilities (call, EMPATHY_CAPABILITIES_AUDIO);
 325 }
 326
 327 static void
 328 tp_call_channel_invalidated_cb (TpChannel     *channel,
 329                                 GQuark         domain,
 330                                 gint           code,
 331                                 gchar         *message,
 332                                 EmpathyTpCall *call)
 333 {
 334   EmpathyTpCallPriv *priv = GET_PRIV (call);
 335
 336   DEBUG ("Channel invalidated: %s", message);
 337   priv->status = EMPATHY_TP_CALL_STATUS_CLOSED;
 338   g_object_notify (G_OBJECT (call), "status");
 339 }
 340
 341 static void
 342 tp_call_async_cb (TpProxy *proxy,
 343                   const GError *error,
 344                   gpointer user_data,
 345                   GObject *call)
 346 {
 347   if (error)
 348       DEBUG ("Error %s: %s", (gchar*) user_data, error->message);
 349 }
 350
 351 static GObject *
 352 tp_call_constructor (GType type,
 353                      guint n_construct_params,
 354                      GObjectConstructParam *construct_params)
 355 {
 356   GObject *object;
 357   EmpathyTpCall *call;
 358   EmpathyTpCallPriv *priv;
 359
 360   object = G_OBJECT_CLASS (empathy_tp_call_parent_class)->constructor (type,
 361       n_construct_params, construct_params);
 362
 363   call = EMPATHY_TP_CALL (object);
 364   priv = GET_PRIV (call);
 365
 366   /* Setup streamed media channel */
 367   g_signal_connect (priv->channel, "invalidated",
 368       G_CALLBACK (tp_call_channel_invalidated_cb), call);
 369   tp_cli_channel_type_streamed_media_connect_to_stream_added (priv->channel,
 370       tp_call_stream_added_cb, NULL, NULL, G_OBJECT (call), NULL);
 371   tp_cli_channel_type_streamed_media_connect_to_stream_removed (priv->channel,
 372       tp_call_stream_removed_cb, NULL, NULL, G_OBJECT (call), NULL);
 373   tp_cli_channel_type_streamed_media_connect_to_stream_state_changed (priv->channel,
 374       tp_call_stream_state_changed_cb, NULL, NULL, G_OBJECT (call), NULL);
 375   tp_cli_channel_type_streamed_media_connect_to_stream_direction_changed (priv->channel,
 376       tp_call_stream_direction_changed_cb, NULL, NULL, G_OBJECT (call), NULL);
 377   tp_cli_channel_type_streamed_media_call_list_streams (priv->channel, -1,
 378       tp_call_request_streams_cb, NULL, NULL, G_OBJECT (call));
 379
 380   /* Update status when members changes */
 381   tp_call_update_status (call);
 382   g_signal_connect_swapped (priv->channel, "group-members-changed",
 383       G_CALLBACK (tp_call_update_status), call);
 384
 385   return object;
 386 }
 387 static void
 388 tp_call_dispose (GObject *object)
 389 {
 390   EmpathyTpCallPriv *priv = GET_PRIV (object);
 391
 392   DEBUG ("Disposing: %p, %d", object, priv->dispose_has_run);
 393
 394   if (priv->dispose_has_run)
 395     return;
 396
 397   priv->dispose_has_run = TRUE;
 398
 399   if (priv->channel != NULL)
 400     {
 401       g_signal_handlers_disconnect_by_func (priv->channel,
 402         tp_call_channel_invalidated_cb, object);
 403
 404       g_object_unref (priv->channel);
 405       priv->channel = NULL;
 406     }
 407
 408   if (priv->contact != NULL)
 409       g_object_unref (priv->contact);
 410
 411   if (G_OBJECT_CLASS (empathy_tp_call_parent_class)->dispose)
 412     G_OBJECT_CLASS (empathy_tp_call_parent_class)->dispose (object);
 413 }
 414
 415 static void
 416 tp_call_finalize (GObject *object)
 417 {
 418   EmpathyTpCallPriv *priv = GET_PRIV (object);
 419
 420   DEBUG ("Finalizing: %p", object);
 421
 422   g_slice_free (EmpathyTpCallStream, priv->audio);
 423   g_slice_free (EmpathyTpCallStream, priv->video);
 424
 425   (G_OBJECT_CLASS (empathy_tp_call_parent_class)->finalize) (object);
 426 }
 427
 428 static void
 429 tp_call_set_property (GObject *object,
 430                       guint prop_id,
 431                       const GValue *value,
 432                       GParamSpec *pspec)
 433 {
 434   EmpathyTpCallPriv *priv = GET_PRIV (object);
 435
 436   switch (prop_id)
 437     {
 438     case PROP_CHANNEL:
 439       priv->channel = g_value_dup_object (value);
 440       break;
 441     default:
 442       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 443       break;
 444   }
 445 }
 446
 447 static void
 448 tp_call_get_property (GObject *object,
 449                       guint prop_id,
 450                       GValue *value,
 451                       GParamSpec *pspec)
 452 {
 453   EmpathyTpCallPriv *priv = GET_PRIV (object);
 454
 455   switch (prop_id)
 456     {
 457     case PROP_CHANNEL:
 458       g_value_set_object (value, priv->channel);
 459       break;
 460     case PROP_CONTACT:
 461       g_value_set_object (value, priv->contact);
 462       break;
 463     case PROP_IS_INCOMING:
 464       g_value_set_boolean (value, priv->is_incoming);
 465       break;
 466     case PROP_STATUS:
 467       g_value_set_uint (value, priv->status);
 468       break;
 469     case PROP_AUDIO_STREAM:
 470       g_value_set_pointer (value, priv->audio);
 471       break;
 472     case PROP_VIDEO_STREAM:
 473       g_value_set_pointer (value, priv->video);
 474       break;
 475     default:
 476       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 477       break;
 478   }
 479 }
 480
 481 static void
 482 empathy_tp_call_class_init (EmpathyTpCallClass *klass)
 483 {
 484   GObjectClass *object_class = G_OBJECT_CLASS (klass);
 485
 486   object_class->constructor = tp_call_constructor;
 487   object_class->dispose = tp_call_dispose;
 488   object_class->finalize = tp_call_finalize;
 489   object_class->set_property = tp_call_set_property;
 490   object_class->get_property = tp_call_get_property;
 491
 492   g_type_class_add_private (klass, sizeof (EmpathyTpCallPriv));
 493
 494   g_object_class_install_property (object_class, PROP_CHANNEL,
 495       g_param_spec_object ("channel", "channel", "channel",
 496       TP_TYPE_CHANNEL,
 497       G_PARAM_CONSTRUCT_ONLY | G_PARAM_READWRITE |
 498       G_PARAM_STATIC_NICK | G_PARAM_STATIC_BLURB));
 499   g_object_class_install_property (object_class, PROP_CONTACT,
 500       g_param_spec_object ("contact", "Call contact", "Call contact",
 501       EMPATHY_TYPE_CONTACT,
 502       G_PARAM_READABLE | G_PARAM_STATIC_NICK | G_PARAM_STATIC_BLURB));
 503   g_object_class_install_property (object_class, PROP_IS_INCOMING,
 504       g_param_spec_boolean ("is-incoming", "Is media stream incoming",
 505       "Is media stream incoming", FALSE, G_PARAM_READABLE |
 506       G_PARAM_STATIC_NICK | G_PARAM_STATIC_BLURB));
 507   g_object_class_install_property (object_class, PROP_STATUS,
 508       g_param_spec_uint ("status", "Call status",
 509       "Call status", 0, 255, 0, G_PARAM_READABLE | G_PARAM_STATIC_NICK |
 510       G_PARAM_STATIC_BLURB));
 511   g_object_class_install_property (object_class, PROP_AUDIO_STREAM,
 512       g_param_spec_pointer ("audio-stream", "Audio stream data",
 513       "Audio stream data",
 514       G_PARAM_READABLE | G_PARAM_STATIC_NICK | G_PARAM_STATIC_BLURB));
 515   g_object_class_install_property (object_class, PROP_VIDEO_STREAM,
 516       g_param_spec_pointer ("video-stream", "Video stream data",
 517       "Video stream data",
 518       G_PARAM_READABLE | G_PARAM_STATIC_NICK | G_PARAM_STATIC_BLURB));
 519 }
 520
 521 static void
 522 empathy_tp_call_init (EmpathyTpCall *call)
 523 {
 524   EmpathyTpCallPriv *priv = G_TYPE_INSTANCE_GET_PRIVATE (call,
 525     EMPATHY_TYPE_TP_CALL, EmpathyTpCallPriv);
 526
 527   call->priv = priv;
 528   priv->status = EMPATHY_TP_CALL_STATUS_READYING;
 529   priv->contact = NULL;
 530   priv->audio = g_slice_new0 (EmpathyTpCallStream);
 531   priv->video = g_slice_new0 (EmpathyTpCallStream);
 532   priv->audio->exists = FALSE;
 533   priv->video->exists = FALSE;
 534 }
 535
 536 EmpathyTpCall *
 537 empathy_tp_call_new (TpChannel *channel)
 538 {
 539   g_return_val_if_fail (TP_IS_CHANNEL (channel), NULL);
 540
 541   return g_object_new (EMPATHY_TYPE_TP_CALL,
 542       "channel", channel,
 543       NULL);
 544 }
 545
 546 void
 547 empathy_tp_call_accept_incoming_call (EmpathyTpCall *call)
 548 {
 549   EmpathyTpCallPriv *priv = GET_PRIV (call);
 550   TpHandle self_handle;
 551   GArray handles = {(gchar *) &self_handle, 1};
 552
 553   g_return_if_fail (EMPATHY_IS_TP_CALL (call));
 554   g_return_if_fail (priv->status == EMPATHY_TP_CALL_STATUS_PENDING);
 555   g_return_if_fail (priv->is_incoming);
 556
 557   DEBUG ("Accepting incoming call");
 558
 559   self_handle = tp_channel_group_get_self_handle (priv->channel);
 560   tp_cli_channel_interface_group_call_add_members (priv->channel, -1,
 561       &handles, NULL, NULL, NULL, NULL, NULL);
 562 }
 563
 564 void
 565 empathy_tp_call_close (EmpathyTpCall *call)
 566 {
 567   EmpathyTpCallPriv *priv = GET_PRIV (call);
 568
 569   g_return_if_fail (EMPATHY_IS_TP_CALL (call));
 570
 571   if (priv->status == EMPATHY_TP_CALL_STATUS_CLOSED)
 572       return;
 573
 574   DEBUG ("Closing channel");
 575
 576   tp_cli_channel_call_close (priv->channel, -1,
 577       NULL, NULL, NULL, NULL);
 578
 579   priv->status = EMPATHY_TP_CALL_STATUS_CLOSED;
 580   g_object_notify (G_OBJECT (call), "status");
 581 }
 582
 583 void
 584 empathy_tp_call_request_video_stream_direction (EmpathyTpCall *call,
 585                                                 gboolean is_sending)
 586 {
 587   EmpathyTpCallPriv *priv = GET_PRIV (call);
 588   guint new_direction;
 589
 590   g_return_if_fail (EMPATHY_IS_TP_CALL (call));
 591   g_return_if_fail (priv->status == EMPATHY_TP_CALL_STATUS_ACCEPTED);
 592
 593   DEBUG ("Requesting video stream direction - is_sending: %d", is_sending);
 594
 595   if (!priv->video->exists)
 596     {
 597       if (is_sending)
 598           tp_call_request_streams_for_capabilities (call,
 599               EMPATHY_CAPABILITIES_VIDEO);
 600       return;
 601     }
 602
 603   if (is_sending)
 604       new_direction = priv->video->direction | TP_MEDIA_STREAM_DIRECTION_SEND;
 605   else
 606       new_direction = priv->video->direction & ~TP_MEDIA_STREAM_DIRECTION_SEND;
 607
 608   tp_cli_channel_type_streamed_media_call_request_stream_direction (priv->channel,
 609       -1, priv->video->id, new_direction,
 610       (tp_cli_channel_type_streamed_media_callback_for_request_stream_direction)
 611       tp_call_async_cb, NULL, NULL, G_OBJECT (call));
 612 }
 613
 614 void
 615 empathy_tp_call_start_tone (EmpathyTpCall *call, TpDTMFEvent event)
 616 {
 617   EmpathyTpCallPriv *priv = GET_PRIV (call);
 618
 619   g_return_if_fail (EMPATHY_IS_TP_CALL (call));
 620   g_return_if_fail (priv->status == EMPATHY_TP_CALL_STATUS_ACCEPTED);
 621
 622   if (!priv->audio->exists)
 623       return;
 624
 625   tp_cli_channel_interface_dtmf_call_start_tone (priv->channel, -1,
 626       priv->audio->id, event,
 627       (tp_cli_channel_interface_dtmf_callback_for_start_tone) tp_call_async_cb,
 628       "starting tone", NULL, G_OBJECT (call));
 629 }
 630
 631 void
 632 empathy_tp_call_stop_tone (EmpathyTpCall *call)
 633 {
 634   EmpathyTpCallPriv *priv = GET_PRIV (call);
 635
 636   g_return_if_fail (EMPATHY_IS_TP_CALL (call));
 637   g_return_if_fail (priv->status == EMPATHY_TP_CALL_STATUS_ACCEPTED);
 638
 639   if (!priv->audio->exists)
 640       return;
 641
 642   tp_cli_channel_interface_dtmf_call_stop_tone (priv->channel, -1,
 643       priv->audio->id,
 644       (tp_cli_channel_interface_dtmf_callback_for_stop_tone) tp_call_async_cb,
 645       "stoping tone", NULL, G_OBJECT (call));
 646 }
 647
 648 gboolean
 649 empathy_tp_call_has_dtmf (EmpathyTpCall *call)
 650 {
 651   EmpathyTpCallPriv *priv = GET_PRIV (call);
 652
 653   g_return_val_if_fail (EMPATHY_IS_TP_CALL (call), FALSE);
 654
 655   return tp_proxy_has_interface_by_id (priv->channel,
 656       TP_IFACE_QUARK_CHANNEL_INTERFACE_DTMF);
 657 }
 658