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 static void
 136 create_call_channel_cb (GObject *source,
 137     GAsyncResult *result,
 138     gpointer user_data)
 139 {
 140   TpAccountChannelRequest *streamed_media_req = user_data;
 141   GError *error = NULL;
 142
 143   if (tp_account_channel_request_create_channel_finish (
 144       TP_ACCOUNT_CHANNEL_REQUEST (source), result, &error))
 145     {
 146       g_object_unref (streamed_media_req);
 147       return;
 148     }
 149
 150   DEBUG ("Failed to create Call channel: %s", error->message);
 151
 152   if (error->code != TP_ERROR_NOT_IMPLEMENTED)
 153     {
 154       show_call_error (error);
 155       return;
 156     }
 157
 158   DEBUG ("Let's try with an StreamedMedia channel");
 159   g_error_free (error);
 160   tp_account_channel_request_create_channel_async (streamed_media_req,
 161       EMPATHY_AV_BUS_NAME, NULL,
 162       create_streamed_media_channel_cb,
 163       NULL);
 164 }
 165
 166 /* Try to request a Call channel and fallback to StreamedMedia if that fails */
 167 static void
 168 call_new_with_streams (const gchar *contact,
 169     TpAccount *account,
 170     gboolean initial_audio,
 171     gboolean initial_video,
 172     gint64 timestamp)
 173 {
 174   GHashTable *call_request, *streamed_media_request;
 175   TpAccountChannelRequest *call_req, *streamed_media_req;
 176
 177   /* Call */
 178   call_request = empathy_call_create_call_request (contact,
 179       initial_audio,
 180       initial_video);
 181
 182   call_req = tp_account_channel_request_new (account, call_request, timestamp);
 183
 184   g_hash_table_unref (call_request);
 185
 186   /* StreamedMedia */
 187   streamed_media_request = empathy_call_create_streamed_media_request (
 188       contact, initial_audio, initial_video);
 189
 190   streamed_media_req = tp_account_channel_request_new (account,
 191       streamed_media_request,
 192       timestamp);
 193
 194   g_hash_table_unref (streamed_media_request);
 195
 196   tp_account_channel_request_create_channel_async (call_req,
 197       EMPATHY_CALL_BUS_NAME, NULL,
 198       create_call_channel_cb,
 199       streamed_media_req);
 200
 201   g_object_unref (call_req);
 202 }
 203
 204 void
 205 empathy_call_new_with_streams (const gchar *contact,
 206     TpAccount *account,
 207     gboolean initial_audio,
 208     gboolean initial_video,
 209     gint64 timestamp)
 210 {
 211   call_new_with_streams (contact, account, initial_audio, initial_video,
 212       timestamp);
 213 }
 214
 215 void
 216 empathy_call_set_stream_properties (GstElement *element)
 217 {
 218   GstStructure *props;
 219   GSettings *gsettings_call;
 220   gboolean echo_cancellation;
 221
 222   gsettings_call = g_settings_new (EMPATHY_PREFS_CALL_SCHEMA);
 223
 224   echo_cancellation = g_settings_get_boolean (gsettings_call,
 225       EMPATHY_PREFS_CALL_ECHO_CANCELLATION);
 226
 227   props = gst_structure_new ("props",
 228       PA_PROP_MEDIA_ROLE, G_TYPE_STRING, "phone",
 229       NULL);
 230
 231   if (echo_cancellation)
 232     {
 233       gst_structure_set (props,
 234           "filter.want", G_TYPE_STRING, "echo-cancel",
 235           NULL);
 236     }
 237
 238   g_object_set (element, "stream-properties", props, NULL);
 239   gst_structure_free (props);
 240
 241   g_object_unref (gsettings_call);
 242 }