libempathy/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
  22 #include <stdio.h>
  23 #include <stdlib.h>
  24
  25 #include <telepathy-glib/util.h>
  26 #include <telepathy-glib/interfaces.h>
  27
  28 #include <telepathy-farsight/channel.h>
  29 #include <telepathy-farsight/stream.h>
  30
  31 #include "empathy-call-handler.h"
  32 #include "empathy-dispatcher.h"
  33 #include "empathy-marshal.h"
  34 #include "empathy-utils.h"
  35
  36 G_DEFINE_TYPE(EmpathyCallHandler, empathy_call_handler, G_TYPE_OBJECT)
  37
  38 /* signal enum */
  39 enum {
  40   CONFERENCE_ADDED,
  41   SRC_PAD_ADDED,
  42   SINK_PAD_ADDED,
  43   REQUEST_RESOURCE,
  44   CLOSED,
  45   STREAM_CLOSED,
  46   LAST_SIGNAL
  47 };
  48
  49 static guint signals[LAST_SIGNAL] = {0};
  50
  51 enum {
  52   PROP_TP_CALL = 1,
  53   PROP_GST_BUS,
  54   PROP_CONTACT,
  55   PROP_INITIAL_AUDIO,
  56   PROP_INITIAL_VIDEO
  57 };
  58
  59 /* private structure */
  60
  61 typedef struct {
  62   gboolean dispose_has_run;
  63   EmpathyTpCall *call;
  64   EmpathyContact *contact;
  65   TfChannel *tfchannel;
  66   gboolean initial_audio;
  67   gboolean initial_video;
  68 } EmpathyCallHandlerPriv;
  69
  70 #define GET_PRIV(obj) EMPATHY_GET_PRIV (obj, EmpathyCallHandler)
  71
  72 static void
  73 empathy_call_handler_dispose (GObject *object)
  74 {
  75   EmpathyCallHandlerPriv *priv = GET_PRIV (object);
  76
  77   if (priv->dispose_has_run)
  78     return;
  79
  80   priv->dispose_has_run = TRUE;
  81
  82   if (priv->contact != NULL)
  83     g_object_unref (priv->contact);
  84
  85   priv->contact = NULL;
  86
  87   if (priv->tfchannel != NULL)
  88     g_object_unref (priv->tfchannel);
  89
  90   priv->tfchannel = NULL;
  91
  92   if (priv->call != NULL)
  93     {
  94       empathy_tp_call_close (priv->call);
  95       g_object_unref (priv->call);
  96     }
  97
  98   priv->call = NULL;
  99
 100   /* release any references held by the object here */
 101   if (G_OBJECT_CLASS (empathy_call_handler_parent_class)->dispose)
 102     G_OBJECT_CLASS (empathy_call_handler_parent_class)->dispose (object);
 103 }
 104
 105 static void
 106 empathy_call_handler_finalize (GObject *object)
 107 {
 108   /* free any data held directly by the object here */
 109   if (G_OBJECT_CLASS (empathy_call_handler_parent_class)->finalize)
 110     G_OBJECT_CLASS (empathy_call_handler_parent_class)->finalize (object);
 111 }
 112
 113 static void
 114 empathy_call_handler_init (EmpathyCallHandler *obj)
 115 {
 116   EmpathyCallHandlerPriv *priv = G_TYPE_INSTANCE_GET_PRIVATE (obj,
 117     EMPATHY_TYPE_CALL_HANDLER, EmpathyCallHandlerPriv);
 118
 119   obj->priv = priv;
 120 }
 121
 122 static void
 123 empathy_call_handler_constructed (GObject *object)
 124 {
 125   EmpathyCallHandlerPriv *priv = GET_PRIV (object);
 126
 127   if (priv->contact == NULL)
 128     {
 129       g_object_get (priv->call, "contact", &(priv->contact), NULL);
 130     }
 131 }
 132
 133 static void
 134 empathy_call_handler_set_property (GObject *object,
 135   guint property_id, const GValue *value, GParamSpec *pspec)
 136 {
 137   EmpathyCallHandlerPriv *priv = GET_PRIV (object);
 138
 139   switch (property_id)
 140     {
 141       case PROP_CONTACT:
 142         priv->contact = g_value_dup_object (value);
 143         break;
 144       case PROP_TP_CALL:
 145         priv->call = g_value_dup_object (value);
 146         break;
 147       case PROP_INITIAL_AUDIO:
 148         priv->initial_audio = g_value_get_boolean (value);
 149         break;
 150       case PROP_INITIAL_VIDEO:
 151         priv->initial_video = g_value_get_boolean (value);
 152         break;
 153       default:
 154         G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
 155     }
 156 }
 157
 158 static void
 159 empathy_call_handler_get_property (GObject *object,
 160   guint property_id, GValue *value, GParamSpec *pspec)
 161 {
 162   EmpathyCallHandlerPriv *priv = GET_PRIV (object);
 163
 164   switch (property_id)
 165     {
 166       case PROP_CONTACT:
 167         g_value_set_object (value, priv->contact);
 168         break;
 169       case PROP_TP_CALL:
 170         g_value_set_object (value, priv->call);
 171         break;
 172       case PROP_INITIAL_AUDIO:
 173         g_value_set_boolean (value, priv->initial_audio);
 174         break;
 175       case PROP_INITIAL_VIDEO:
 176         g_value_set_boolean (value, priv->initial_video);
 177         break;
 178       default:
 179         G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
 180     }
 181 }
 182
 183
 184 static void
 185 empathy_call_handler_class_init (EmpathyCallHandlerClass *klass)
 186 {
 187   GObjectClass *object_class = G_OBJECT_CLASS (klass);
 188   GParamSpec *param_spec;
 189
 190   g_type_class_add_private (klass, sizeof (EmpathyCallHandlerPriv));
 191
 192   object_class->constructed = empathy_call_handler_constructed;
 193   object_class->set_property = empathy_call_handler_set_property;
 194   object_class->get_property = empathy_call_handler_get_property;
 195   object_class->dispose = empathy_call_handler_dispose;
 196   object_class->finalize = empathy_call_handler_finalize;
 197
 198   param_spec = g_param_spec_object ("contact",
 199     "contact", "The remote contact",
 200     EMPATHY_TYPE_CONTACT,
 201     G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY | G_PARAM_STATIC_STRINGS);
 202   g_object_class_install_property (object_class, PROP_CONTACT, param_spec);
 203
 204   param_spec = g_param_spec_object ("tp-call",
 205     "tp-call", "The calls channel wrapper",
 206     EMPATHY_TYPE_TP_CALL,
 207     G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY | G_PARAM_STATIC_STRINGS);
 208   g_object_class_install_property (object_class, PROP_TP_CALL, param_spec);
 209
 210   param_spec = g_param_spec_boolean ("initial-audio",
 211     "initial-audio", "Whether the call should start with audio",
 212     TRUE,
 213     G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY | G_PARAM_STATIC_STRINGS);
 214   g_object_class_install_property (object_class, PROP_INITIAL_AUDIO,
 215       param_spec);
 216
 217   param_spec = g_param_spec_boolean ("initial-video",
 218     "initial-video", "Whether the call should start with video",
 219     FALSE,
 220     G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY | G_PARAM_STATIC_STRINGS);
 221   g_object_class_install_property (object_class, PROP_INITIAL_VIDEO,
 222     param_spec);
 223
 224   signals[CONFERENCE_ADDED] =
 225     g_signal_new ("conference-added", G_TYPE_FROM_CLASS (klass),
 226       G_SIGNAL_RUN_LAST, 0, NULL, NULL,
 227       g_cclosure_marshal_VOID__OBJECT,
 228       G_TYPE_NONE,
 229       1, FS_TYPE_CONFERENCE);
 230
 231   signals[SRC_PAD_ADDED] =
 232     g_signal_new ("src-pad-added", G_TYPE_FROM_CLASS (klass),
 233       G_SIGNAL_RUN_LAST, 0, NULL, NULL,
 234       _empathy_marshal_VOID__OBJECT_UINT,
 235       G_TYPE_NONE,
 236       2, GST_TYPE_PAD, G_TYPE_UINT);
 237
 238   signals[SINK_PAD_ADDED] =
 239     g_signal_new ("sink-pad-added", G_TYPE_FROM_CLASS (klass),
 240       G_SIGNAL_RUN_LAST, 0, NULL, NULL,
 241       _empathy_marshal_VOID__OBJECT_UINT,
 242       G_TYPE_NONE,
 243       2, GST_TYPE_PAD, G_TYPE_UINT);
 244
 245   signals[REQUEST_RESOURCE] =
 246     g_signal_new ("request-resource", G_TYPE_FROM_CLASS (klass),
 247       G_SIGNAL_RUN_LAST, 0,
 248       g_signal_accumulator_true_handled, NULL,
 249       _empathy_marshal_BOOLEAN__UINT_UINT,
 250       G_TYPE_BOOLEAN, 2, G_TYPE_UINT, G_TYPE_UINT);
 251
 252   signals[CLOSED] =
 253     g_signal_new ("closed", G_TYPE_FROM_CLASS (klass),
 254       G_SIGNAL_RUN_LAST, 0, NULL, NULL,
 255       g_cclosure_marshal_VOID__VOID,
 256       G_TYPE_NONE,
 257       0);
 258
 259   signals[STREAM_CLOSED] =
 260     g_signal_new ("stream-closed", G_TYPE_FROM_CLASS (klass),
 261       G_SIGNAL_RUN_LAST, 0, NULL, NULL,
 262       g_cclosure_marshal_VOID__OBJECT,
 263       G_TYPE_NONE, 1, TF_TYPE_STREAM);
 264 }
 265
 266 /**
 267  * empathy_call_handler_new_for_contact:
 268  * @contact: an #EmpathyContact
 269  *
 270  * Creates a new #EmpathyCallHandler with contact @contact.
 271  *
 272  * Return value: a new #EmpathyCallHandler
 273  */
 274 EmpathyCallHandler *
 275 empathy_call_handler_new_for_contact (EmpathyContact *contact)
 276 {
 277   return EMPATHY_CALL_HANDLER (g_object_new (EMPATHY_TYPE_CALL_HANDLER,
 278     "contact", contact, NULL));
 279 }
 280
 281 /**
 282  * empathy_call_handler_new_for_contact_with_streams:
 283  * @contact: an #EmpathyContact
 284  * @audio: if %TRUE the call will be started with audio
 285  * @video: if %TRUE the call will be started with video
 286  *
 287  * Creates a new #EmpathyCallHandler with contact @contact.
 288  *
 289  * Return value: a new #EmpathyCallHandler
 290  */
 291 EmpathyCallHandler *
 292 empathy_call_handler_new_for_contact_with_streams (EmpathyContact *contact,
 293     gboolean audio, gboolean video)
 294 {
 295   return EMPATHY_CALL_HANDLER (g_object_new (EMPATHY_TYPE_CALL_HANDLER,
 296     "contact", contact,
 297     "initial-audio", audio,
 298     "initial-video", video,
 299     NULL));
 300 }
 301
 302 EmpathyCallHandler *
 303 empathy_call_handler_new_for_channel (EmpathyTpCall *call)
 304 {
 305   return EMPATHY_CALL_HANDLER (g_object_new (EMPATHY_TYPE_CALL_HANDLER,
 306     "tp-call", call,
 307     "initial-video", empathy_tp_call_is_receiving_video (call),
 308     NULL));
 309 }
 310
 311 void
 312 empathy_call_handler_bus_message (EmpathyCallHandler *handler,
 313   GstBus *bus, GstMessage *message)
 314 {
 315   EmpathyCallHandlerPriv *priv = GET_PRIV (handler);
 316
 317   if (priv->tfchannel == NULL)
 318     return;
 319
 320   tf_channel_bus_message (priv->tfchannel, message);
 321 }
 322
 323 static void
 324 empathy_call_handler_tf_channel_session_created_cb (TfChannel *tfchannel,
 325   FsConference *conference, FsParticipant *participant,
 326   EmpathyCallHandler *self)
 327 {
 328   g_signal_emit (G_OBJECT (self), signals[CONFERENCE_ADDED], 0,
 329     GST_ELEMENT (conference));
 330 }
 331
 332 static void
 333 empathy_call_handler_tf_stream_src_pad_added_cb (TfStream *stream,
 334   GstPad *pad, FsCodec *codec, EmpathyCallHandler  *handler)
 335 {
 336   guint media_type;
 337
 338   g_object_get (stream, "media-type", &media_type, NULL);
 339
 340   g_signal_emit (G_OBJECT (handler), signals[SRC_PAD_ADDED], 0,
 341     pad, media_type);
 342 }
 343
 344
 345 static gboolean
 346 empathy_call_handler_tf_stream_request_resource_cb (TfStream *stream,
 347   guint direction, EmpathyTpCall *call)
 348 {
 349   gboolean ret;
 350   guint media_type;
 351
 352   g_object_get (G_OBJECT (stream), "media-type", &media_type, NULL);
 353
 354   g_signal_emit (G_OBJECT (call),
 355     signals[REQUEST_RESOURCE], 0, media_type, direction, &ret);
 356
 357   return ret;
 358 }
 359
 360 static void
 361 empathy_call_handler_tf_stream_closed_cb (TfStream *stream,
 362   EmpathyCallHandler *handler)
 363 {
 364   g_signal_emit (handler, signals[STREAM_CLOSED], 0, stream);
 365 }
 366
 367 static void
 368 empathy_call_handler_tf_channel_stream_created_cb (TfChannel *tfchannel,
 369   TfStream *stream, EmpathyCallHandler *handler)
 370 {
 371   guint media_type;
 372   GstPad *spad;
 373
 374   g_signal_connect (stream, "src-pad-added",
 375       G_CALLBACK (empathy_call_handler_tf_stream_src_pad_added_cb), handler);
 376   g_signal_connect (stream, "request-resource",
 377       G_CALLBACK (empathy_call_handler_tf_stream_request_resource_cb),
 378         handler);
 379   g_signal_connect (stream, "closed",
 380       G_CALLBACK (empathy_call_handler_tf_stream_closed_cb), handler);
 381
 382   g_object_get (stream, "media-type", &media_type,
 383     "sink-pad", &spad, NULL);
 384
 385   g_signal_emit (G_OBJECT (handler), signals[SINK_PAD_ADDED], 0,
 386     spad, media_type);
 387
 388   gst_object_unref (spad);
 389 }
 390
 391 static void
 392 empathy_call_handler_tf_channel_closed_cb (TfChannel *tfchannel,
 393   EmpathyCallHandler *handler)
 394 {
 395   g_signal_emit (G_OBJECT (handler), signals[CLOSED], 0);
 396 }
 397
 398 static GList *
 399 empathy_call_handler_tf_channel_codec_config_cb (TfChannel *channel,
 400   guint stream_id, FsMediaType media_type, guint direction, gpointer user_data)
 401 {
 402   gchar *filename = empathy_file_lookup ("codec-preferences", "data");
 403   GList *codecs;
 404   GError *error = NULL;
 405
 406   codecs = fs_codec_list_from_keyfile (filename, &error);
 407   g_free (filename);
 408
 409   if (!codecs)
 410     {
 411       g_warning ("No codec-preferences file: %s",
 412           error ? error->message : "No error message");
 413     }
 414   g_clear_error (&error);
 415
 416   return codecs;
 417 }
 418
 419 static void
 420 empathy_call_handler_start_tpfs (EmpathyCallHandler *self)
 421 {
 422   EmpathyCallHandlerPriv *priv = GET_PRIV (self);
 423   TpChannel *channel;
 424
 425   g_object_get (priv->call, "channel", &channel, NULL);
 426
 427   g_assert (channel != NULL);
 428
 429   priv->tfchannel = tf_channel_new (channel);
 430
 431   /* Set up the telepathy farsight channel */
 432   g_signal_connect (priv->tfchannel, "session-created",
 433       G_CALLBACK (empathy_call_handler_tf_channel_session_created_cb), self);
 434   g_signal_connect (priv->tfchannel, "stream-created",
 435       G_CALLBACK (empathy_call_handler_tf_channel_stream_created_cb), self);
 436   g_signal_connect (priv->tfchannel, "closed",
 437       G_CALLBACK (empathy_call_handler_tf_channel_closed_cb), self);
 438   g_signal_connect (priv->tfchannel, "stream-get-codec-config",
 439       G_CALLBACK (empathy_call_handler_tf_channel_codec_config_cb), self);
 440
 441   g_object_unref (channel);
 442 }
 443
 444 static void
 445 empathy_call_handler_request_cb (EmpathyDispatchOperation *operation,
 446   const GError *error, gpointer user_data)
 447 {
 448   EmpathyCallHandler *self = EMPATHY_CALL_HANDLER (user_data);
 449   EmpathyCallHandlerPriv *priv = GET_PRIV (self);
 450
 451   if (error != NULL)
 452     return;
 453
 454   priv->call = EMPATHY_TP_CALL (
 455     empathy_dispatch_operation_get_channel_wrapper (operation));
 456
 457   g_object_ref (priv->call);
 458   g_object_notify (G_OBJECT (self), "tp-call");
 459
 460   empathy_call_handler_start_tpfs (self);
 461
 462   empathy_tp_call_to (priv->call, priv->contact,
 463     priv->initial_audio, priv->initial_video);
 464
 465   empathy_dispatch_operation_claim (operation);
 466 }
 467
 468 void
 469 empathy_call_handler_start_call (EmpathyCallHandler *handler)
 470 {
 471
 472   EmpathyCallHandlerPriv *priv = GET_PRIV (handler);
 473   EmpathyDispatcher *dispatcher;
 474   TpConnection *connection;
 475   GList *classes;
 476   GValue *value;
 477   GHashTable *request;
 478
 479   if (priv->call != NULL)
 480     {
 481       empathy_call_handler_start_tpfs (handler);
 482       empathy_tp_call_accept_incoming_call (priv->call);
 483       return;
 484     }
 485
 486   g_assert (priv->contact != NULL);
 487
 488   dispatcher = empathy_dispatcher_dup_singleton ();
 489   connection = empathy_contact_get_connection (priv->contact);
 490   classes = empathy_dispatcher_find_requestable_channel_classes
 491     (dispatcher, connection, TP_IFACE_CHANNEL_TYPE_STREAMED_MEDIA,
 492      TP_HANDLE_TYPE_CONTACT, NULL);
 493
 494   if (classes == NULL)
 495     return;
 496
 497   g_list_free (classes);
 498
 499   request = g_hash_table_new_full (g_str_hash, g_str_equal, NULL,
 500       (GDestroyNotify) tp_g_value_slice_free);
 501
 502   /* org.freedesktop.Telepathy.Channel.ChannelType */
 503   value = tp_g_value_slice_new (G_TYPE_STRING);
 504   g_value_set_string (value, TP_IFACE_CHANNEL_TYPE_STREAMED_MEDIA);
 505   g_hash_table_insert (request, TP_IFACE_CHANNEL ".ChannelType", value);
 506
 507   /* org.freedesktop.Telepathy.Channel.TargetHandleType */
 508   value = tp_g_value_slice_new (G_TYPE_UINT);
 509   g_value_set_uint (value, TP_HANDLE_TYPE_CONTACT);
 510   g_hash_table_insert (request, TP_IFACE_CHANNEL ".TargetHandleType", value);
 511
 512   /* org.freedesktop.Telepathy.Channel.TargetHandle*/
 513   value = tp_g_value_slice_new (G_TYPE_UINT);
 514   g_value_set_uint (value, empathy_contact_get_handle (priv->contact));
 515   g_hash_table_insert (request, TP_IFACE_CHANNEL ".TargetHandle", value);
 516
 517   empathy_dispatcher_create_channel (dispatcher, connection,
 518     request, empathy_call_handler_request_cb, handler);
 519
 520   g_object_unref (dispatcher);
 521 }
 522
 523 /**
 524  * empathy_call_handler_stop_call:
 525  * @handler: an #EmpathyCallHandler
 526  *
 527  * Closes the #EmpathyCallHandler's call and frees its resources.
 528  */
 529 void
 530 empathy_call_handler_stop_call (EmpathyCallHandler *handler)
 531 {
 532   EmpathyCallHandlerPriv *priv = GET_PRIV (handler);
 533
 534   if (priv->call != NULL)
 535     {
 536       empathy_tp_call_close (priv->call);
 537       g_object_unref (priv->call);
 538     }
 539
 540   priv->call = NULL;
 541 }
 542
 543 /**
 544  * empathy_call_handler_has_initial_video:
 545  * @handler: an #EmpathyCallHandler
 546  *
 547  * Return %TRUE if the call managed by this #EmpathyCallHandler was
 548  * created with video enabled
 549  *
 550  * Return value: %TRUE if the call was created as a video conversation.
 551  */
 552 gboolean
 553 empathy_call_handler_has_initial_video (EmpathyCallHandler *handler)
 554 {
 555   EmpathyCallHandlerPriv *priv = GET_PRIV (handler);
 556
 557   return priv->initial_video;
 558 }
 559