libempathy-gtk/empathy-call-utils.c

   1 /*
   2  * Copyright (C) 2011 Collabora Ltd.
   3  *
   4  * The code contained in this file is free software; you can redistribute
   5  * it and/or modify it under the terms of the GNU Lesser General Public
   6  * License as published by the Free Software Foundation; either version
   7  * 2.1 of the License, or (at your option) any later version.
   8  *
   9  * This file 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 code; if not, write to the Free Software
  16  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  17  *
  18  * Authors: Emilio Pozuelo Monfort <emilio.pozuelo@collabora.co.uk>
  19  */
  20
  21 #include "config.h"
  22
  23 #include <glib/gi18n.h>
  24
  25 #include <gtk/gtk.h>
  26 #include <pulse/pulseaudio.h>
  27
  28 #include <telepathy-glib/telepathy-glib.h>
  29
  30 #include <telepathy-yell/telepathy-yell.h>
  31
  32 #include "empathy-call-utils.h"
  33
  34 #include <libempathy/empathy-gsettings.h>
  35 #include <libempathy/empathy-request-util.h>
  36
  37 #define DEBUG_FLAG EMPATHY_DEBUG_OTHER
  38 #include <libempathy/empathy-debug.h>
  39
  40 static const gchar *
  41 get_error_display_message (GError *error)
  42 {
  43   if (error->domain != TP_ERROR)
  44     return _("There was an error starting the call");
  45
  46   switch (error->code)
  47     {
  48       case TP_ERROR_NETWORK_ERROR:
  49         return _("Network error");
  50       case TP_ERROR_NOT_CAPABLE:
  51         return _("The specified contact doesn't support calls");
  52       case TP_ERROR_OFFLINE:
  53         return _("The specified contact is offline");
  54       case TP_ERROR_INVALID_HANDLE:
  55         return _("The specified contact is not valid");
  56       case TP_ERROR_EMERGENCY_CALLS_NOT_SUPPORTED:
  57         return _("Emergency calls are not supported on this protocol");
  58     }
  59
  60   return _("There was an error starting the call");
  61 }
  62
  63 static void
  64 show_call_error (GError *error)
  65 {
  66   GtkWidget *dialog;
  67
  68   dialog = gtk_message_dialog_new (NULL, 0,
  69       GTK_MESSAGE_ERROR, GTK_BUTTONS_CLOSE,
  70       "%s", get_error_display_message (error));
  71
  72   g_signal_connect_swapped (dialog, "response",
  73       G_CALLBACK (gtk_widget_destroy),
  74       dialog);
  75
  76   gtk_widget_show (dialog);
  77 }
  78
  79 GHashTable *
  80 empathy_call_create_call_request (const gchar *contact,
  81     gboolean initial_audio,
  82     gboolean initial_video)
  83 {
  84   return tp_asv_new (
  85     TP_PROP_CHANNEL_CHANNEL_TYPE, G_TYPE_STRING,
  86       TPY_IFACE_CHANNEL_TYPE_CALL,
  87     TP_PROP_CHANNEL_TARGET_HANDLE_TYPE, G_TYPE_UINT,
  88       TP_HANDLE_TYPE_CONTACT,
  89     TP_PROP_CHANNEL_TARGET_ID, G_TYPE_STRING,
  90       contact,
  91     TPY_PROP_CHANNEL_TYPE_CALL_INITIAL_AUDIO, G_TYPE_BOOLEAN,
  92       initial_audio,
  93     TPY_PROP_CHANNEL_TYPE_CALL_INITIAL_VIDEO, G_TYPE_BOOLEAN,
  94       initial_video,
  95     NULL);
  96 }
  97
  98 GHashTable *
  99 empathy_call_create_streamed_media_request (const gchar *contact,
 100     gboolean initial_audio,
 101     gboolean initial_video)
 102 {
 103   return tp_asv_new (
 104     TP_PROP_CHANNEL_CHANNEL_TYPE, G_TYPE_STRING,
 105       TP_IFACE_CHANNEL_TYPE_STREAMED_MEDIA,
 106     TP_PROP_CHANNEL_TARGET_HANDLE_TYPE, G_TYPE_UINT,
 107       TP_HANDLE_TYPE_CONTACT,
 108     TP_PROP_CHANNEL_TARGET_ID, G_TYPE_STRING,
 109       contact,
 110     TP_PROP_CHANNEL_TYPE_STREAMED_MEDIA_INITIAL_AUDIO, G_TYPE_BOOLEAN,
 111       initial_audio,
 112     TP_PROP_CHANNEL_TYPE_STREAMED_MEDIA_INITIAL_VIDEO, G_TYPE_BOOLEAN,
 113       initial_video,
 114     NULL);
 115 }
 116
 117 static void
 118 create_streamed_media_channel_cb (GObject *source,
 119     GAsyncResult *result,
 120     gpointer user_data)
 121 {
 122   GError *error = NULL;
 123
 124   if (!tp_account_channel_request_create_channel_finish (
 125            TP_ACCOUNT_CHANNEL_REQUEST (source),
 126            result,
 127            &error))
 128     {
 129       DEBUG ("Failed to create StreamedMedia channel: %s", error->message);
 130       show_call_error (error);
 131       g_error_free (error);
 132     }
 133 }
 134
 135 #ifdef HAVE_CALL
 136 static void
 137 create_call_channel_cb (GObject *source,
 138     GAsyncResult *result,
 139     gpointer user_data)
 140 {
 141   TpAccountChannelRequest *streamed_media_req = user_data;
 142   GError *error = NULL;
 143
 144   if (tp_account_channel_request_create_channel_finish (
 145       TP_ACCOUNT_CHANNEL_REQUEST (source), result, &error))
 146     {
 147       g_object_unref (streamed_media_req);
 148       return;
 149     }
 150
 151   DEBUG ("Failed to create Call channel: %s", error->message);
 152
 153   if (error->code != TP_ERROR_NOT_IMPLEMENTED)
 154     {
 155       show_call_error (error);
 156       return;
 157     }
 158
 159   DEBUG ("Let's try with an StreamedMedia channel");
 160   g_error_free (error);
 161   tp_account_channel_request_create_channel_async (streamed_media_req,
 162       EMPATHY_AV_BUS_NAME, NULL,
 163       create_streamed_media_channel_cb,
 164       NULL);
 165 }
 166
 167 /* Try to request a Call channel and fallback to StreamedMedia if that fails */
 168 static void
 169 call_new_with_streams (const gchar *contact,
 170     TpAccount *account,
 171     gboolean initial_audio,
 172     gboolean initial_video,
 173     gint64 timestamp)
 174 {
 175   GHashTable *call_request, *streamed_media_request;
 176   TpAccountChannelRequest *call_req, *streamed_media_req;
 177
 178   /* Call */
 179   call_request = empathy_call_create_call_request (contact,
 180       initial_audio,
 181       initial_video);
 182
 183   call_req = tp_account_channel_request_new (account, call_request, timestamp);
 184
 185   g_hash_table_unref (call_request);
 186
 187   /* StreamedMedia */
 188   streamed_media_request = empathy_call_create_streamed_media_request (
 189       contact, initial_audio, initial_video);
 190
 191   streamed_media_req = tp_account_channel_request_new (account,
 192       streamed_media_request,
 193       timestamp);
 194
 195   g_hash_table_unref (streamed_media_request);
 196
 197   tp_account_channel_request_create_channel_async (call_req,
 198       EMPATHY_CALL_BUS_NAME, NULL,
 199       create_call_channel_cb,
 200       streamed_media_req);
 201
 202   g_object_unref (call_req);
 203 }
 204
 205 #else /* HAVE_CALL */
 206
 207 static void
 208 sm_new_with_streams (const gchar *contact,
 209     TpAccount *account,
 210     gboolean initial_audio,
 211     gboolean initial_video,
 212     gint64 timestamp)
 213 {
 214   GHashTable *streamed_media_request;
 215   TpAccountChannelRequest *streamed_media_req;
 216
 217   /* StreamedMedia */
 218   streamed_media_request = empathy_call_create_streamed_media_request (
 219       contact, initial_audio, initial_video);
 220
 221   streamed_media_req = tp_account_channel_request_new (account,
 222       streamed_media_request,
 223       timestamp);
 224
 225   g_hash_table_unref (streamed_media_request);
 226
 227   tp_account_channel_request_create_channel_async (streamed_media_req,
 228       EMPATHY_AV_BUS_NAME, NULL, create_streamed_media_channel_cb, NULL);
 229
 230   g_object_unref (streamed_media_req);
 231 }
 232 #endif /* HAVE_CALL */
 233
 234 void
 235 empathy_call_new_with_streams (const gchar *contact,
 236     TpAccount *account,
 237     gboolean initial_audio,
 238     gboolean initial_video,
 239     gint64 timestamp)
 240 {
 241 #ifdef HAVE_CALL
 242   call_new_with_streams (contact, account, initial_audio, initial_video,
 243       timestamp);
 244 #else
 245   sm_new_with_streams (contact, account, initial_audio, initial_video,
 246       timestamp);
 247 #endif
 248 }
 249
 250 void
 251 empathy_call_set_stream_properties (GstElement *element)
 252 {
 253   GstStructure *props;
 254   GSettings *gsettings_call;
 255   gboolean echo_cancellation;
 256
 257   gsettings_call = g_settings_new (EMPATHY_PREFS_CALL_SCHEMA);
 258
 259   echo_cancellation = g_settings_get_boolean (gsettings_call,
 260       EMPATHY_PREFS_CALL_ECHO_CANCELLATION);
 261
 262   props = gst_structure_new ("props",
 263       PA_PROP_MEDIA_ROLE, G_TYPE_STRING, "phone",
 264       NULL);
 265
 266   if (echo_cancellation)
 267     {
 268       gst_structure_set (props,
 269           "filter.want", G_TYPE_STRING, "echo-cancel",
 270           NULL);
 271     }
 272
 273   g_object_set (element, "stream-properties", props, NULL);
 274   gst_structure_free (props);
 275
 276   g_object_unref (gsettings_call);
 277 }