src/empathy-call-handler.c

   1 /*
   2  * empathy-call-handler.c - Source for EmpathyCallHandler
   3  * Copyright (C) 2008-2009 Collabora Ltd.
   4  * @author Sjoerd Simons <sjoerd.simons@collabora.co.uk>
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  19  */
  20
  21 #include "config.h"
  22 #include "empathy-call-handler.h"
  23
  24 #include <telepathy-farstream/telepathy-farstream.h>
  25
  26 #include "empathy-call-utils.h"
  27 #include "empathy-utils.h"
  28
  29 #define DEBUG_FLAG EMPATHY_DEBUG_VOIP
  30 #include "empathy-debug.h"
  31
  32 G_DEFINE_TYPE(EmpathyCallHandler, empathy_call_handler, G_TYPE_OBJECT)
  33
  34 /* signal enum */
  35 enum {
  36   CONFERENCE_ADDED,
  37   CONFERENCE_REMOVED,
  38   SRC_PAD_ADDED,
  39   CONTENT_ADDED,
  40   CONTENT_REMOVED,
  41   CLOSED,
  42   CANDIDATES_CHANGED,
  43   STATE_CHANGED,
  44   FRAMERATE_CHANGED,
  45   RESOLUTION_CHANGED,
  46   LAST_SIGNAL
  47 };
  48
  49 static guint signals[LAST_SIGNAL] = {0};
  50
  51 enum {
  52   PROP_CALL_CHANNEL = 1,
  53   PROP_GST_BUS,
  54   PROP_CONTACT,
  55   PROP_INITIAL_VIDEO,
  56   PROP_SEND_AUDIO_CODEC,
  57   PROP_SEND_VIDEO_CODEC,
  58   PROP_RECV_AUDIO_CODECS,
  59   PROP_RECV_VIDEO_CODECS,
  60   PROP_AUDIO_REMOTE_CANDIDATE,
  61   PROP_VIDEO_REMOTE_CANDIDATE,
  62   PROP_AUDIO_LOCAL_CANDIDATE,
  63   PROP_VIDEO_LOCAL_CANDIDATE,
  64 };
  65
  66 /* private structure */
  67
  68 struct _EmpathyCallHandlerPriv {
  69   TpCallChannel *call;
  70
  71   EmpathyContact *contact;
  72   TfChannel *tfchannel;
  73   gboolean initial_video;
  74
  75   FsCodec *send_audio_codec;
  76   FsCodec *send_video_codec;
  77   GList *recv_audio_codecs;
  78   GList *recv_video_codecs;
  79   FsCandidate *audio_remote_candidate;
  80   FsCandidate *video_remote_candidate;
  81   FsCandidate *audio_local_candidate;
  82   FsCandidate *video_local_candidate;
  83   gboolean accept_when_initialised;
  84 };
  85
  86 #define GET_PRIV(obj) EMPATHY_GET_PRIV (obj, EmpathyCallHandler)
  87
  88 static void
  89 empathy_call_handler_dispose (GObject *object)
  90 {
  91   EmpathyCallHandlerPriv *priv = GET_PRIV (object);
  92
  93   tp_clear_object (&priv->tfchannel);
  94   tp_clear_object (&priv->call);
  95   tp_clear_object (&priv->contact);
  96
  97   G_OBJECT_CLASS (empathy_call_handler_parent_class)->dispose (object);
  98 }
  99
 100 static void
 101 empathy_call_handler_finalize (GObject *object)
 102 {
 103   EmpathyCallHandlerPriv *priv = GET_PRIV (object);
 104
 105   fs_codec_destroy (priv->send_audio_codec);
 106   fs_codec_destroy (priv->send_video_codec);
 107   fs_codec_list_destroy (priv->recv_audio_codecs);
 108   fs_codec_list_destroy (priv->recv_video_codecs);
 109   fs_candidate_destroy (priv->audio_remote_candidate);
 110   fs_candidate_destroy (priv->video_remote_candidate);
 111   fs_candidate_destroy (priv->audio_local_candidate);
 112   fs_candidate_destroy (priv->video_local_candidate);
 113
 114   G_OBJECT_CLASS (empathy_call_handler_parent_class)->finalize (object);
 115 }
 116
 117 static void
 118 empathy_call_handler_init (EmpathyCallHandler *obj)
 119 {
 120   EmpathyCallHandlerPriv *priv = G_TYPE_INSTANCE_GET_PRIVATE (obj,
 121     EMPATHY_TYPE_CALL_HANDLER, EmpathyCallHandlerPriv);
 122
 123   obj->priv = priv;
 124 }
 125
 126 static void
 127 on_call_accepted_cb (GObject *source_object,
 128     GAsyncResult *res,
 129     gpointer user_data)
 130 {
 131   TpCallChannel *call = TP_CALL_CHANNEL (source_object);
 132   GError *error = NULL;
 133
 134   if (!tp_call_channel_accept_finish (call, res, &error))
 135     {
 136       g_warning ("could not accept Call: %s", error->message);
 137       g_error_free (error);
 138     }
 139 }
 140
 141 static void
 142 on_call_invalidated_cb (TpCallChannel *call,
 143     guint domain,
 144     gint code,
 145     gchar *message,
 146     EmpathyCallHandler *self)
 147 {
 148   EmpathyCallHandlerPriv *priv = self->priv;
 149
 150   if (priv->call == call)
 151     {
 152       /* Invalidated unexpectedly? Fake call ending */
 153       g_signal_emit (self, signals[STATE_CHANGED], 0,
 154           TP_CALL_STATE_ENDED, NULL);
 155       priv->accept_when_initialised = FALSE;
 156       tp_clear_object (&priv->call);
 157       tp_clear_object (&priv->tfchannel);
 158     }
 159 }
 160
 161 static void
 162 on_call_state_changed_cb (TpCallChannel *call,
 163   TpCallState state,
 164   TpCallFlags flags,
 165   TpCallStateReason *reason,
 166   GHashTable *details,
 167   EmpathyCallHandler *handler)
 168 {
 169   EmpathyCallHandlerPriv *priv = handler->priv;
 170
 171   /* Clean up the TfChannel before bubbling the state-change signal
 172    * further up. This ensures that the conference-removed signal is
 173    * emitted before state-changed so that the client gets a chance
 174    * to remove the conference from the pipeline before resetting the
 175    * pipeline itself.
 176    */
 177   if (state == TP_CALL_STATE_ENDED)
 178     {
 179       tp_channel_close_async (TP_CHANNEL (call), NULL, NULL);
 180       priv->accept_when_initialised = FALSE;
 181       tp_clear_object (&priv->call);
 182       tp_clear_object (&priv->tfchannel);
 183     }
 184
 185   g_signal_emit (handler, signals[STATE_CHANGED], 0, state,
 186       reason->dbus_reason);
 187
 188   if (state == TP_CALL_STATE_INITIALISED &&
 189       priv->accept_when_initialised)
 190     {
 191       tp_call_channel_accept_async (priv->call, on_call_accepted_cb, NULL);
 192       priv->accept_when_initialised = FALSE;
 193     }
 194 }
 195
 196 static void
 197 empathy_call_handler_set_property (GObject *object,
 198   guint property_id, const GValue *value, GParamSpec *pspec)
 199 {
 200   EmpathyCallHandlerPriv *priv = GET_PRIV (object);
 201
 202   switch (property_id)
 203     {
 204       case PROP_CONTACT:
 205         priv->contact = g_value_dup_object (value);
 206         break;
 207       case PROP_CALL_CHANNEL:
 208         g_return_if_fail (priv->call == NULL);
 209
 210         priv->call = g_value_dup_object (value);
 211
 212         tp_g_signal_connect_object (priv->call, "state-changed",
 213           G_CALLBACK (on_call_state_changed_cb), object, 0);
 214         tp_g_signal_connect_object (priv->call, "invalidated",
 215           G_CALLBACK (on_call_invalidated_cb), object, 0);
 216         break;
 217       case PROP_INITIAL_VIDEO:
 218         priv->initial_video = g_value_get_boolean (value);
 219         break;
 220       default:
 221         G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
 222     }
 223 }
 224
 225 static void
 226 empathy_call_handler_get_property (GObject *object,
 227   guint property_id, GValue *value, GParamSpec *pspec)
 228 {
 229   EmpathyCallHandlerPriv *priv = GET_PRIV (object);
 230
 231   switch (property_id)
 232     {
 233       case PROP_CONTACT:
 234         g_value_set_object (value, priv->contact);
 235         break;
 236       case PROP_CALL_CHANNEL:
 237         g_value_set_object (value, priv->call);
 238         break;
 239       case PROP_INITIAL_VIDEO:
 240         g_value_set_boolean (value, priv->initial_video);
 241         break;
 242       case PROP_SEND_AUDIO_CODEC:
 243         g_value_set_boxed (value, priv->send_audio_codec);
 244         break;
 245       case PROP_SEND_VIDEO_CODEC:
 246         g_value_set_boxed (value, priv->send_video_codec);
 247         break;
 248       case PROP_RECV_AUDIO_CODECS:
 249         g_value_set_boxed (value, priv->recv_audio_codecs);
 250         break;
 251       case PROP_RECV_VIDEO_CODECS:
 252         g_value_set_boxed (value, priv->recv_video_codecs);
 253         break;
 254       case PROP_AUDIO_REMOTE_CANDIDATE:
 255         g_value_set_boxed (value, priv->audio_remote_candidate);
 256         break;
 257       case PROP_VIDEO_REMOTE_CANDIDATE:
 258         g_value_set_boxed (value, priv->video_remote_candidate);
 259         break;
 260       case PROP_AUDIO_LOCAL_CANDIDATE:
 261         g_value_set_boxed (value, priv->audio_local_candidate);
 262         break;
 263       case PROP_VIDEO_LOCAL_CANDIDATE:
 264         g_value_set_boxed (value, priv->video_local_candidate);
 265         break;
 266       default:
 267         G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
 268     }
 269 }
 270
 271
 272 static void
 273 empathy_call_handler_class_init (EmpathyCallHandlerClass *klass)
 274 {
 275   GObjectClass *object_class = G_OBJECT_CLASS (klass);
 276   GParamSpec *param_spec;
 277
 278   g_type_class_add_private (klass, sizeof (EmpathyCallHandlerPriv));
 279
 280   object_class->set_property = empathy_call_handler_set_property;
 281   object_class->get_property = empathy_call_handler_get_property;
 282   object_class->dispose = empathy_call_handler_dispose;
 283   object_class->finalize = empathy_call_handler_finalize;
 284
 285   param_spec = g_param_spec_object ("target-contact",
 286     "TargetContact", "The contact",
 287     EMPATHY_TYPE_CONTACT,
 288     G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY | G_PARAM_STATIC_STRINGS);
 289   g_object_class_install_property (object_class, PROP_CONTACT, param_spec);
 290
 291   param_spec = g_param_spec_object ("call-channel",
 292     "call channel", "The call channel",
 293     TP_TYPE_CALL_CHANNEL,
 294     G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY | G_PARAM_STATIC_STRINGS);
 295   g_object_class_install_property (object_class, PROP_CALL_CHANNEL, param_spec);
 296
 297   param_spec = g_param_spec_boolean ("initial-video",
 298     "initial-video", "Whether the call should start with video",
 299     FALSE,
 300     G_PARAM_READWRITE | G_PARAM_CONSTRUCT | G_PARAM_STATIC_STRINGS);
 301   g_object_class_install_property (object_class, PROP_INITIAL_VIDEO,
 302     param_spec);
 303
 304   param_spec = g_param_spec_boxed ("send-audio-codec",
 305     "send audio codec", "Codec used to encode the outgoing video stream",
 306     FS_TYPE_CODEC,
 307     G_PARAM_READABLE | G_PARAM_STATIC_STRINGS);
 308   g_object_class_install_property (object_class, PROP_SEND_AUDIO_CODEC,
 309     param_spec);
 310
 311   param_spec = g_param_spec_boxed ("send-video-codec",
 312     "send video codec", "Codec used to encode the outgoing video stream",
 313     FS_TYPE_CODEC,
 314     G_PARAM_READABLE | G_PARAM_STATIC_STRINGS);
 315   g_object_class_install_property (object_class, PROP_SEND_VIDEO_CODEC,
 316     param_spec);
 317
 318   param_spec = g_param_spec_boxed ("recv-audio-codecs",
 319     "recvs audio codec", "Codecs used to decode the incoming audio stream",
 320     FS_TYPE_CODEC_LIST,
 321     G_PARAM_READABLE | G_PARAM_STATIC_STRINGS);
 322   g_object_class_install_property (object_class, PROP_RECV_AUDIO_CODECS,
 323     param_spec);
 324
 325   param_spec = g_param_spec_boxed ("recv-video-codecs",
 326     "recvs video codec", "Codecs used to decode the incoming video stream",
 327     FS_TYPE_CODEC_LIST,
 328     G_PARAM_READABLE | G_PARAM_STATIC_STRINGS);
 329   g_object_class_install_property (object_class, PROP_RECV_VIDEO_CODECS,
 330     param_spec);
 331
 332   param_spec = g_param_spec_boxed ("audio-remote-candidate",
 333     "audio remote candidate",
 334     "Remote candidate used for the audio stream",
 335     FS_TYPE_CANDIDATE,
 336     G_PARAM_READABLE | G_PARAM_STATIC_STRINGS);
 337   g_object_class_install_property (object_class,
 338       PROP_AUDIO_REMOTE_CANDIDATE, param_spec);
 339
 340   param_spec = g_param_spec_boxed ("video-remote-candidate",
 341     "video remote candidate",
 342     "Remote candidate used for the video stream",
 343     FS_TYPE_CANDIDATE,
 344     G_PARAM_READABLE | G_PARAM_STATIC_STRINGS);
 345   g_object_class_install_property (object_class,
 346       PROP_VIDEO_REMOTE_CANDIDATE, param_spec);
 347
 348   param_spec = g_param_spec_boxed ("audio-local-candidate",
 349     "audio local candidate",
 350     "Local candidate used for the audio stream",
 351     FS_TYPE_CANDIDATE,
 352     G_PARAM_READABLE | G_PARAM_STATIC_STRINGS);
 353   g_object_class_install_property (object_class,
 354       PROP_AUDIO_REMOTE_CANDIDATE, param_spec);
 355
 356   param_spec = g_param_spec_boxed ("video-local-candidate",
 357     "video local candidate",
 358     "Local candidate used for the video stream",
 359     FS_TYPE_CANDIDATE,
 360     G_PARAM_READABLE | G_PARAM_STATIC_STRINGS);
 361   g_object_class_install_property (object_class,
 362       PROP_VIDEO_REMOTE_CANDIDATE, param_spec);
 363
 364   signals[CONFERENCE_ADDED] =
 365     g_signal_new ("conference-added", G_TYPE_FROM_CLASS (klass),
 366       G_SIGNAL_RUN_LAST, 0, NULL, NULL,
 367       g_cclosure_marshal_generic,
 368       G_TYPE_NONE,
 369       1, FS_TYPE_CONFERENCE);
 370
 371   signals[CONFERENCE_REMOVED] =
 372     g_signal_new ("conference-removed", G_TYPE_FROM_CLASS (klass),
 373       G_SIGNAL_RUN_LAST, 0, NULL, NULL,
 374       g_cclosure_marshal_generic,
 375       G_TYPE_NONE,
 376       1, FS_TYPE_CONFERENCE);
 377
 378   signals[SRC_PAD_ADDED] =
 379     g_signal_new ("src-pad-added", G_TYPE_FROM_CLASS (klass),
 380       G_SIGNAL_RUN_LAST, 0, NULL, NULL,
 381       g_cclosure_marshal_generic,
 382       G_TYPE_BOOLEAN,
 383       2, TF_TYPE_CONTENT, GST_TYPE_PAD);
 384
 385   signals[CONTENT_ADDED] =
 386     g_signal_new ("content-added", G_TYPE_FROM_CLASS (klass),
 387       G_SIGNAL_RUN_LAST, 0, NULL, NULL,
 388       g_cclosure_marshal_generic,
 389       G_TYPE_BOOLEAN,
 390       1, TF_TYPE_CONTENT);
 391
 392   signals[CONTENT_REMOVED] =
 393     g_signal_new ("content-removed", G_TYPE_FROM_CLASS (klass),
 394       G_SIGNAL_RUN_LAST, 0, NULL, NULL,
 395       g_cclosure_marshal_generic,
 396       G_TYPE_BOOLEAN,
 397       1, TF_TYPE_CONTENT);
 398
 399   signals[CLOSED] =
 400     g_signal_new ("closed", G_TYPE_FROM_CLASS (klass),
 401       G_SIGNAL_RUN_LAST, 0, NULL, NULL,
 402       g_cclosure_marshal_generic,
 403       G_TYPE_NONE,
 404       0);
 405
 406   signals[CANDIDATES_CHANGED] =
 407     g_signal_new ("candidates-changed", G_TYPE_FROM_CLASS (klass),
 408       G_SIGNAL_RUN_LAST, 0, NULL, NULL,
 409       g_cclosure_marshal_generic,
 410       G_TYPE_NONE, 1, G_TYPE_UINT);
 411
 412   signals[STATE_CHANGED] =
 413     g_signal_new ("state-changed", G_TYPE_FROM_CLASS (klass),
 414       G_SIGNAL_RUN_LAST, 0, NULL, NULL,
 415       g_cclosure_marshal_generic,
 416       G_TYPE_NONE, 2, G_TYPE_UINT, G_TYPE_STRING);
 417
 418   signals[FRAMERATE_CHANGED] =
 419     g_signal_new ("framerate-changed", G_TYPE_FROM_CLASS (klass),
 420       G_SIGNAL_RUN_LAST, 0, NULL, NULL,
 421       g_cclosure_marshal_generic,
 422       G_TYPE_NONE, 1, G_TYPE_UINT);
 423
 424   signals[RESOLUTION_CHANGED] =
 425     g_signal_new ("resolution-changed", G_TYPE_FROM_CLASS (klass),
 426       G_SIGNAL_RUN_LAST, 0, NULL, NULL,
 427       g_cclosure_marshal_generic,
 428       G_TYPE_NONE,
 429       2, G_TYPE_UINT, G_TYPE_UINT);
 430 }
 431
 432 EmpathyCallHandler *
 433 empathy_call_handler_new_for_channel (TpCallChannel *call,
 434   EmpathyContact *contact)
 435 {
 436   return EMPATHY_CALL_HANDLER (g_object_new (EMPATHY_TYPE_CALL_HANDLER,
 437     "call-channel", call,
 438     "initial-video", tp_call_channel_has_initial_video (call, NULL),
 439     "target-contact", contact,
 440     NULL));
 441 }
 442
 443 static void
 444 update_sending_codec (EmpathyCallHandler *self,
 445     FsCodec *codec,
 446     FsSession *session)
 447 {
 448   EmpathyCallHandlerPriv *priv = GET_PRIV (self);
 449   FsMediaType type;
 450
 451   if (codec == NULL || session == NULL)
 452     return;
 453
 454   g_object_get (session, "media-type", &type, NULL);
 455
 456   if (type == FS_MEDIA_TYPE_AUDIO)
 457     {
 458       priv->send_audio_codec = fs_codec_copy (codec);
 459       g_object_notify (G_OBJECT (self), "send-audio-codec");
 460     }
 461   else if (type == FS_MEDIA_TYPE_VIDEO)
 462     {
 463       priv->send_video_codec = fs_codec_copy (codec);
 464       g_object_notify (G_OBJECT (self), "send-video-codec");
 465     }
 466 }
 467
 468 static void
 469 update_receiving_codec (EmpathyCallHandler *self,
 470     GList *codecs,
 471     FsStream *stream)
 472 {
 473   EmpathyCallHandlerPriv *priv = GET_PRIV (self);
 474   FsSession *session;
 475   FsMediaType type;
 476
 477   if (codecs == NULL || stream == NULL)
 478     return;
 479
 480   g_object_get (stream, "session", &session, NULL);
 481   if (session == NULL)
 482     return;
 483
 484   g_object_get (session, "media-type", &type, NULL);
 485
 486   if (type == FS_MEDIA_TYPE_AUDIO)
 487     {
 488       priv->recv_audio_codecs = fs_codec_list_copy (codecs);
 489       g_object_notify (G_OBJECT (self), "recv-audio-codecs");
 490     }
 491   else if (type == FS_MEDIA_TYPE_VIDEO)
 492     {
 493       priv->recv_video_codecs = fs_codec_list_copy (codecs);
 494       g_object_notify (G_OBJECT (self), "recv-video-codecs");
 495     }
 496
 497   g_object_unref (session);
 498 }
 499
 500 static void
 501 update_candidates (EmpathyCallHandler *self,
 502     FsCandidate *remote_candidate,
 503     FsCandidate *local_candidate,
 504     FsStream *stream)
 505 {
 506   EmpathyCallHandlerPriv *priv = GET_PRIV (self);
 507   FsSession *session;
 508   FsMediaType type;
 509
 510   if (stream == NULL)
 511     return;
 512
 513   g_object_get (stream, "session", &session, NULL);
 514   if (session == NULL)
 515     return;
 516
 517   g_object_get (session, "media-type", &type, NULL);
 518
 519   if (type == FS_MEDIA_TYPE_AUDIO)
 520     {
 521       if (remote_candidate != NULL)
 522         {
 523           fs_candidate_destroy (priv->audio_remote_candidate);
 524           priv->audio_remote_candidate = fs_candidate_copy (remote_candidate);
 525           g_object_notify (G_OBJECT (self), "audio-remote-candidate");
 526         }
 527
 528       if (local_candidate != NULL)
 529         {
 530           fs_candidate_destroy (priv->audio_local_candidate);
 531           priv->audio_local_candidate = fs_candidate_copy (local_candidate);
 532           g_object_notify (G_OBJECT (self), "audio-local-candidate");
 533         }
 534
 535       g_signal_emit (G_OBJECT (self), signals[CANDIDATES_CHANGED], 0,
 536           FS_MEDIA_TYPE_AUDIO);
 537     }
 538   else if (type == FS_MEDIA_TYPE_VIDEO)
 539     {
 540       if (remote_candidate != NULL)
 541         {
 542           fs_candidate_destroy (priv->video_remote_candidate);
 543           priv->video_remote_candidate = fs_candidate_copy (remote_candidate);
 544           g_object_notify (G_OBJECT (self), "video-remote-candidate");
 545         }
 546
 547       if (local_candidate != NULL)
 548         {
 549           fs_candidate_destroy (priv->video_local_candidate);
 550           priv->video_local_candidate = fs_candidate_copy (local_candidate);
 551           g_object_notify (G_OBJECT (self), "video-local-candidate");
 552         }
 553
 554       g_signal_emit (G_OBJECT (self), signals[CANDIDATES_CHANGED], 0,
 555           FS_MEDIA_TYPE_VIDEO);
 556     }
 557
 558   g_object_unref (session);
 559 }
 560
 561 void
 562 empathy_call_handler_bus_message (EmpathyCallHandler *handler,
 563   GstBus *bus, GstMessage *message)
 564 {
 565   EmpathyCallHandlerPriv *priv = GET_PRIV (handler);
 566   const GstStructure *s = gst_message_get_structure (message);
 567
 568   if (priv->tfchannel == NULL)
 569     return;
 570
 571   if (s != NULL &&
 572       gst_structure_has_name (s, "farsight-send-codec-changed"))
 573     {
 574       const GValue *val;
 575       FsCodec *codec;
 576       FsSession *session;
 577
 578       DEBUG ("farsight-send-codec-changed");
 579
 580       val = gst_structure_get_value (s, "codec");
 581       codec = g_value_get_boxed (val);
 582
 583       val = gst_structure_get_value (s, "session");
 584       session = g_value_get_object (val);
 585
 586       update_sending_codec (handler, codec, session);
 587     }
 588   else if (s != NULL &&
 589       gst_structure_has_name (s, "farsight-recv-codecs-changed"))
 590     {
 591       const GValue *val;
 592       GList *codecs;
 593       FsStream *stream;
 594
 595       DEBUG ("farsight-recv-codecs-changed");
 596
 597       val = gst_structure_get_value (s, "codecs");
 598       codecs = g_value_get_boxed (val);
 599
 600       val = gst_structure_get_value (s, "stream");
 601       stream = g_value_get_object (val);
 602
 603       update_receiving_codec (handler, codecs, stream);
 604     }
 605   else if (s != NULL &&
 606       gst_structure_has_name (s, "farsight-new-active-candidate-pair"))
 607     {
 608       const GValue *val;
 609       FsCandidate *remote_candidate, *local_candidate;
 610       FsStream *stream;
 611
 612       DEBUG ("farsight-new-active-candidate-pair");
 613
 614       val = gst_structure_get_value (s, "remote-candidate");
 615       remote_candidate = g_value_get_boxed (val);
 616
 617       val = gst_structure_get_value (s, "local-candidate");
 618       local_candidate = g_value_get_boxed (val);
 619
 620       val = gst_structure_get_value (s, "stream");
 621       stream = g_value_get_object (val);
 622
 623       update_candidates (handler, remote_candidate, local_candidate, stream);
 624     }
 625
 626   tf_channel_bus_message (priv->tfchannel, message);
 627 }
 628
 629 static void
 630 on_tf_channel_conference_added_cb (TfChannel *tfchannel,
 631   GstElement *conference,
 632   EmpathyCallHandler *self)
 633 {
 634   g_signal_emit (G_OBJECT (self), signals[CONFERENCE_ADDED], 0,
 635     conference);
 636 }
 637
 638 static void
 639 on_tf_channel_conference_removed_cb (TfChannel *tfchannel,
 640   FsConference *conference,
 641   EmpathyCallHandler *self)
 642 {
 643   g_signal_emit (G_OBJECT (self), signals[CONFERENCE_REMOVED], 0,
 644     GST_ELEMENT (conference));
 645 }
 646
 647 static gboolean
 648 src_pad_added_error_idle (gpointer data)
 649 {
 650   TfContent *content = data;
 651
 652   tf_content_error_literal (content, "Could not link sink");
 653   g_object_unref (content);
 654
 655   return FALSE;
 656 }
 657
 658 static void
 659 on_tf_content_src_pad_added_cb (TfContent *content,
 660   guint handle,
 661   FsStream *stream,
 662   GstPad *pad,
 663   FsCodec *codec,
 664   EmpathyCallHandler *handler)
 665 {
 666   gboolean retval;
 667
 668   g_signal_emit (G_OBJECT (handler), signals[SRC_PAD_ADDED], 0,
 669       content, pad, &retval);
 670
 671   if (!retval)
 672     g_idle_add (src_pad_added_error_idle, g_object_ref (content));
 673 }
 674
 675 static void
 676 on_tf_content_framerate_changed (TfContent *content,
 677   GParamSpec *spec,
 678   EmpathyCallHandler *handler)
 679 {
 680   guint framerate;
 681
 682   g_object_get (content, "framerate", &framerate, NULL);
 683
 684   if (framerate != 0)
 685     g_signal_emit (G_OBJECT (handler), signals[FRAMERATE_CHANGED], 0,
 686         framerate);
 687 }
 688
 689 static void
 690 on_tf_content_resolution_changed (TfContent *content,
 691    guint width,
 692    guint height,
 693    EmpathyCallHandler *handler)
 694 {
 695   if (width > 0 && height > 0)
 696     g_signal_emit (G_OBJECT (handler), signals[RESOLUTION_CHANGED], 0,
 697         width, height);
 698 }
 699
 700 static void
 701 on_tf_channel_content_added_cb (TfChannel *tfchannel,
 702   TfContent *content,
 703   EmpathyCallHandler *handler)
 704 {
 705   FsMediaType mtype;
 706   FsSession *session;
 707 //  FsStream *fs_stream;
 708   FsCodec *codec;
 709 //  GList *codecs;
 710   gboolean retval;
 711
 712   g_signal_connect (content, "src-pad-added",
 713       G_CALLBACK (on_tf_content_src_pad_added_cb), handler);
 714 #if 0
 715   g_signal_connect (content, "start-sending",
 716       G_CALLBACK (on_tf_content_start_sending_cb), handler);
 717   g_signal_connect (content, "stop-sending",
 718       G_CALLBACK (on_tf_content_stop_sending_cb), handler);
 719 #endif
 720
 721   g_signal_emit (G_OBJECT (handler), signals[CONTENT_ADDED], 0,
 722     content, &retval);
 723
 724  if (!retval)
 725       tf_content_error_literal (content, "Could not link source");
 726
 727  /* Get sending codec */
 728  g_object_get (content, "fs-session", &session, NULL);
 729  g_object_get (session, "current-send-codec", &codec, NULL);
 730
 731  update_sending_codec (handler, codec, session);
 732
 733  tp_clear_object (&session);
 734  tp_clear_object (&codec);
 735
 736  /* Get receiving codec */
 737 /* FIXME
 738  g_object_get (content, "fs-stream", &fs_stream, NULL);
 739  g_object_get (fs_stream, "current-recv-codecs", &codecs, NULL);
 740
 741  update_receiving_codec (handler, codecs, fs_stream);
 742
 743  fs_codec_list_destroy (codecs);
 744  tp_clear_object (&fs_stream);
 745 */
 746
 747   g_object_get (content, "media-type", &mtype, NULL);
 748
 749  if (mtype == FS_MEDIA_TYPE_VIDEO)
 750    {
 751      guint framerate, width, height;
 752
 753      g_signal_connect (content, "notify::framerate",
 754          G_CALLBACK (on_tf_content_framerate_changed),
 755          handler);
 756
 757      g_signal_connect (content, "resolution-changed",
 758          G_CALLBACK (on_tf_content_resolution_changed),
 759          handler);
 760
 761      g_object_get (content,
 762          "framerate", &framerate,
 763          "width", &width,
 764          "height", &height,
 765          NULL);
 766
 767      if (framerate > 0)
 768        g_signal_emit (G_OBJECT (handler), signals[FRAMERATE_CHANGED], 0,
 769            framerate);
 770
 771      if (width > 0 && height > 0)
 772        g_signal_emit (G_OBJECT (handler), signals[RESOLUTION_CHANGED], 0,
 773            width, height);
 774    }
 775 }
 776
 777 static void
 778 on_tf_channel_content_removed_cb (TfChannel *tfchannel,
 779   TfContent *content,
 780   EmpathyCallHandler *handler)
 781 {
 782   gboolean retval;
 783
 784   DEBUG ("removing content");
 785
 786   g_signal_emit (G_OBJECT (handler), signals[CONTENT_REMOVED], 0,
 787       content, &retval);
 788
 789   if (!retval)
 790     {
 791       g_warning ("Could not remove content!");
 792
 793       tf_content_error_literal (content, "Could not link source");
 794     }
 795 }
 796
 797 static void
 798 on_tf_channel_closed_cb (TfChannel *tfchannel,
 799     EmpathyCallHandler *handler)
 800 {
 801   g_signal_emit (G_OBJECT (handler), signals[CLOSED], 0);
 802 }
 803
 804 static void
 805 on_tf_channel_ready (GObject *source,
 806     GAsyncResult *result,
 807     gpointer user_data)
 808 {
 809   EmpathyCallHandler *self = EMPATHY_CALL_HANDLER (user_data);
 810   EmpathyCallHandlerPriv *priv = GET_PRIV (self);
 811   GError *error = NULL;
 812
 813   priv->tfchannel = TF_CHANNEL (g_async_initable_new_finish (
 814       G_ASYNC_INITABLE (source), result, NULL));
 815
 816   if (priv->tfchannel == NULL)
 817     {
 818       g_warning ("Failed to create Farstream channel: %s", error->message);
 819       g_error_free (error);
 820       return;
 821     }
 822
 823   /* Set up the telepathy farstream channel */
 824   g_signal_connect (priv->tfchannel, "closed",
 825       G_CALLBACK (on_tf_channel_closed_cb), self);
 826   g_signal_connect (priv->tfchannel, "fs-conference-added",
 827       G_CALLBACK (on_tf_channel_conference_added_cb), self);
 828   g_signal_connect (priv->tfchannel, "fs-conference-removed",
 829       G_CALLBACK (on_tf_channel_conference_removed_cb), self);
 830   g_signal_connect (priv->tfchannel, "content-added",
 831       G_CALLBACK (on_tf_channel_content_added_cb), self);
 832   g_signal_connect (priv->tfchannel, "content-removed",
 833       G_CALLBACK (on_tf_channel_content_removed_cb), self);
 834 }
 835
 836 static void
 837 empathy_call_handler_start_tpfs (EmpathyCallHandler *self)
 838 {
 839   EmpathyCallHandlerPriv *priv = GET_PRIV (self);
 840
 841   tf_channel_new_async (TP_CHANNEL (priv->call),
 842       on_tf_channel_ready, self);
 843 }
 844
 845 static void
 846 empathy_call_handler_request_cb (GObject *source,
 847     GAsyncResult *result,
 848     gpointer user_data)
 849 {
 850   EmpathyCallHandler *self = EMPATHY_CALL_HANDLER (user_data);
 851   EmpathyCallHandlerPriv *priv = GET_PRIV (self);
 852   TpChannel *channel;
 853   GError *error = NULL;
 854   TpAccountChannelRequest *req = TP_ACCOUNT_CHANNEL_REQUEST (source);
 855
 856   channel = tp_account_channel_request_create_and_handle_channel_finish (req,
 857       result, NULL, &error);
 858   if (channel == NULL)
 859     {
 860       DEBUG ("Failed to create the channel: %s", error->message);
 861       g_error_free (error);
 862       return;
 863     }
 864
 865   if (!TP_IS_CALL_CHANNEL (channel))
 866     {
 867       DEBUG ("The channel is not a Call channel!");
 868       return;
 869     }
 870
 871   priv->call = TP_CALL_CHANNEL (channel);
 872   tp_g_signal_connect_object (priv->call, "state-changed",
 873     G_CALLBACK (on_call_state_changed_cb), self, 0);
 874   tp_g_signal_connect_object (priv->call, "invalidated",
 875     G_CALLBACK (on_call_invalidated_cb), self, 0);
 876
 877   g_object_notify (G_OBJECT (self), "call-channel");
 878
 879   empathy_call_handler_start_tpfs (self);
 880   tp_call_channel_accept_async (priv->call, on_call_accepted_cb, NULL);
 881 }
 882
 883 void
 884 empathy_call_handler_start_call (EmpathyCallHandler *handler,
 885     gint64 timestamp)
 886 {
 887   EmpathyCallHandlerPriv *priv = GET_PRIV (handler);
 888   TpAccountChannelRequest *req;
 889   TpAccount *account;
 890
 891   if (priv->call != NULL)
 892     {
 893       empathy_call_handler_start_tpfs (handler);
 894
 895       if (tp_channel_get_requested (TP_CHANNEL (priv->call)))
 896         {
 897           /* accept outgoing channels immediately */
 898           tp_call_channel_accept_async (priv->call,
 899               on_call_accepted_cb, NULL);
 900         }
 901       else
 902         {
 903           /* accepting incoming channels when they are INITIALISED */
 904           if (tp_call_channel_get_state (priv->call, NULL, NULL, NULL) ==
 905               TP_CALL_STATE_INITIALISED)
 906             tp_call_channel_accept_async (priv->call,
 907                 on_call_accepted_cb, NULL);
 908           else
 909             priv->accept_when_initialised = TRUE;
 910         }
 911
 912       return;
 913     }
 914
 915   /* No TpCallChannel (we are redialing). Request a new call channel */
 916   g_assert (priv->contact != NULL);
 917
 918   account = empathy_contact_get_account (priv->contact);
 919
 920   req = empathy_call_create_call_request (account,
 921       empathy_contact_get_id (priv->contact), priv->initial_video, timestamp);
 922
 923   tp_account_channel_request_create_and_handle_channel_async (req, NULL,
 924       empathy_call_handler_request_cb, handler);
 925
 926   g_object_unref (req);
 927 }
 928
 929 /**
 930  * empathy_call_handler_stop_call:
 931  * @handler: an #EmpathyCallHandler
 932  *
 933  * Closes the #EmpathyCallHandler's call and frees its resources.
 934  */
 935 void
 936 empathy_call_handler_stop_call (EmpathyCallHandler *handler)
 937 {
 938   EmpathyCallHandlerPriv *priv = GET_PRIV (handler);
 939
 940   if (priv->call != NULL)
 941     {
 942       tp_call_channel_hangup_async (priv->call,
 943           TP_CALL_STATE_CHANGE_REASON_USER_REQUESTED,
 944           "", "", NULL, NULL);
 945     }
 946 }
 947
 948 /**
 949  * empathy_call_handler_has_initial_video:
 950  * @handler: an #EmpathyCallHandler
 951  *
 952  * Return %TRUE if the call managed by this #EmpathyCallHandler was
 953  * created with video enabled
 954  *
 955  * Return value: %TRUE if the call was created as a video conversation.
 956  */
 957 gboolean
 958 empathy_call_handler_has_initial_video (EmpathyCallHandler *handler)
 959 {
 960   EmpathyCallHandlerPriv *priv = GET_PRIV (handler);
 961
 962   return priv->initial_video;
 963 }
 964
 965 FsCodec *
 966 empathy_call_handler_get_send_audio_codec (EmpathyCallHandler *self)
 967 {
 968   EmpathyCallHandlerPriv *priv = GET_PRIV (self);
 969
 970   return priv->send_audio_codec;
 971 }
 972
 973 FsCodec *
 974 empathy_call_handler_get_send_video_codec (EmpathyCallHandler *self)
 975 {
 976   EmpathyCallHandlerPriv *priv = GET_PRIV (self);
 977
 978   return priv->send_video_codec;
 979 }
 980
 981 GList *
 982 empathy_call_handler_get_recv_audio_codecs (EmpathyCallHandler *self)
 983 {
 984   EmpathyCallHandlerPriv *priv = GET_PRIV (self);
 985
 986   return priv->recv_audio_codecs;
 987 }
 988
 989 GList *
 990 empathy_call_handler_get_recv_video_codecs (EmpathyCallHandler *self)
 991 {
 992   EmpathyCallHandlerPriv *priv = GET_PRIV (self);
 993
 994   return priv->recv_video_codecs;
 995 }
 996
 997 FsCandidate *
 998 empathy_call_handler_get_audio_remote_candidate (
 999     EmpathyCallHandler *self)
1000 {
1001   EmpathyCallHandlerPriv *priv = GET_PRIV (self);
1002
1003   return priv->audio_remote_candidate;
1004 }
1005
1006 FsCandidate *
1007 empathy_call_handler_get_audio_local_candidate (
1008     EmpathyCallHandler *self)
1009 {
1010   EmpathyCallHandlerPriv *priv = GET_PRIV (self);
1011
1012   return priv->audio_local_candidate;
1013 }
1014
1015 FsCandidate *
1016 empathy_call_handler_get_video_remote_candidate (
1017     EmpathyCallHandler *self)
1018 {
1019   EmpathyCallHandlerPriv *priv = GET_PRIV (self);
1020
1021   return priv->video_remote_candidate;
1022 }
1023
1024 FsCandidate *
1025 empathy_call_handler_get_video_local_candidate (
1026     EmpathyCallHandler *self)
1027 {
1028   EmpathyCallHandlerPriv *priv = GET_PRIV (self);
1029
1030   return priv->video_local_candidate;
1031 }
1032
1033 EmpathyContact *
1034 empathy_call_handler_get_contact (EmpathyCallHandler *self)
1035 {
1036   return self->priv->contact;
1037 }