git.sesse.net Git - vlc/blob - modules/control/dbus.h

   1 /*****************************************************************************
   2  * dbus.h : D-Bus control interface
   3  *****************************************************************************
   4  * Copyright (C) 2006 Rafaël Carré
   5  * $Id$
   6  *
   7  * Authors:    Rafaël Carré <funman at videolanorg>
   8  *             Mirsal ENNAIME <mirsal dot ennaime at gmail dot com>
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License as published by
  12  * the Free Software Foundation; either version 2 of the License, or
  13  * (at your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  * GNU General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with this program; if not, write to the Free Software
  22  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  23  *****************************************************************************/
  24
  25 /* DBUS IDENTIFIERS */
  26
  27 /* name registered on the session bus */
  28 #define VLC_MPRIS_DBUS_SERVICE      "org.mpris.vlc"
  29 #define MPRIS_DBUS_INTERFACE        "org.freedesktop.MediaPlayer"
  30 #define MPRIS_DBUS_ROOT_PATH        "/"
  31 #define MPRIS_DBUS_PLAYER_PATH      "/Player"
  32 #define MPRIS_DBUS_TRACKLIST_PATH   "/TrackList"
  33
  34 /* MACROS */
  35
  36 #define DBUS_METHOD( method_function ) \
  37     static DBusHandlerResult method_function \
  38             ( DBusConnection *p_conn, DBusMessage *p_from, void *p_this )
  39
  40 #define DBUS_SIGNAL( signal_function ) \
  41     static DBusHandlerResult signal_function \
  42             ( DBusConnection *p_conn, void *p_data )
  43
  44 #define REPLY_INIT \
  45     DBusMessage* p_msg = dbus_message_new_method_return( p_from ); \
  46     if( !p_msg ) return DBUS_HANDLER_RESULT_NEED_MEMORY; \
  47
  48 #define REPLY_SEND \
  49     if( !dbus_connection_send( p_conn, p_msg, NULL ) ) \
  50         return DBUS_HANDLER_RESULT_NEED_MEMORY; \
  51     dbus_connection_flush( p_conn ); \
  52     dbus_message_unref( p_msg ); \
  53     return DBUS_HANDLER_RESULT_HANDLED
  54
  55 #define SIGNAL_INIT( signal ) \
  56     DBusMessage *p_msg = dbus_message_new_signal( MPRIS_DBUS_PLAYER_PATH, \
  57         MPRIS_DBUS_INTERFACE, signal ); \
  58     if( !p_msg ) return DBUS_HANDLER_RESULT_NEED_MEMORY; \
  59
  60 #define SIGNAL_SEND \
  61     if( !dbus_connection_send( p_conn, p_msg, NULL ) ) \
  62         return DBUS_HANDLER_RESULT_NEED_MEMORY; \
  63     dbus_message_unref( p_msg ); \
  64     dbus_connection_flush( p_conn ); \
  65     return DBUS_HANDLER_RESULT_HANDLED
  66
  67 #define OUT_ARGUMENTS \
  68     DBusMessageIter args; \
  69     dbus_message_iter_init_append( p_msg, &args )
  70
  71 #define DBUS_ADD( dbus_type, value ) \
  72     if( !dbus_message_iter_append_basic( &args, dbus_type, value ) ) \
  73         return DBUS_HANDLER_RESULT_NEED_MEMORY
  74
  75 #define ADD_STRING( s ) DBUS_ADD( DBUS_TYPE_STRING, s )
  76 #define ADD_BOOL( b ) DBUS_ADD( DBUS_TYPE_BOOLEAN, b )
  77 #define ADD_INT32( i ) DBUS_ADD( DBUS_TYPE_INT32, i )
  78 #define ADD_BYTE( b ) DBUS_ADD( DBUS_TYPE_BYTE, b )
  79
  80 /* XML data to answer org.freedesktop.DBus.Introspectable.Introspect requests */
  81
  82 const char* psz_introspection_xml_data_root =
  83 "<!DOCTYPE node PUBLIC \"-//freedesktop//DTD D-BUS Object Introspection 1.0//EN\"\n"
  84 "\"http://www.freedesktop.org/standards/dbus/1.0/introspect.dtd\">\n"
  85 "<node>\n"
  86 "  <node name=\"Player\"/>\n"
  87 "  <node name=\"TrackList\"/>\n"
  88 "  <interface name=\"org.freedesktop.DBus.Introspectable\">\n"
  89 "    <method name=\"Introspect\">\n"
  90 "      <arg name=\"data\" direction=\"out\" type=\"s\"/>\n"
  91 "    </method>\n"
  92 "  </interface>\n"
  93 "  <interface name=\"org.freedesktop.MediaPlayer\">\n"
  94 "    <method name=\"Identity\">\n"
  95 "      <arg type=\"s\" direction=\"out\" />\n"
  96 "    </method>\n"
  97 "  </interface>\n"
  98 "</node>\n"
  99 ;
 100
 101 const char* psz_introspection_xml_data_player =
 102 "<!DOCTYPE node PUBLIC \"-//freedesktop//DTD D-BUS Object Introspection 1.0//EN\"\n"
 103 "\"http://www.freedesktop.org/standards/dbus/1.0/introspect.dtd\">\n"
 104 "<node>"
 105 "  <interface name=\"org.freedesktop.DBus.Introspectable\">\n"
 106 "    <method name=\"Introspect\">\n"
 107 "      <arg name=\"data\" direction=\"out\" type=\"s\"/>\n"
 108 "    </method>\n"
 109 "  </interface>\n"
 110 "  <interface name=\"org.freedesktop.MediaPlayer\">\n"
 111 "    <method name=\"GetStatus\">\n"
 112 "      <arg type=\"(iiii)\" direction=\"out\" />\n"
 113 "    </method>\n"
 114 "    <method name=\"Quit\">\n"
 115 "    </method>\n"
 116 "    <method name=\"Prev\">\n"
 117 "    </method>\n"
 118 "    <method name=\"Next\">\n"
 119 "    </method>\n"
 120 "    <method name=\"Stop\">\n"
 121 "    </method>\n"
 122 "    <method name=\"Play\">\n"
 123 "    </method>\n"
 124 "    <method name=\"Pause\">\n"
 125 "    </method>\n"
 126 "    <method name=\"Repeat\">\n"
 127 "      <arg type=\"b\" direction=\"in\" />\n"
 128 "    </method>\n"
 129 "    <method name=\"VolumeSet\">\n"
 130 "      <arg type=\"i\" direction=\"in\" />\n"
 131 "    </method>\n"
 132 "    <method name=\"VolumeGet\">\n"
 133 "      <arg type=\"i\" direction=\"out\" />\n"
 134 "    </method>\n"
 135 "    <method name=\"PositionSet\">\n"
 136 "      <arg type=\"i\" direction=\"in\" />\n"
 137 "    </method>\n"
 138 "    <method name=\"PositionGet\">\n"
 139 "      <arg type=\"i\" direction=\"out\" />\n"
 140 "    </method>\n"
 141 "    <method name=\"GetMetadata\">\n"
 142 "      <arg type=\"a{sv}\" direction=\"out\" />\n"
 143 "    </method>\n"
 144 "    <method name=\"GetCaps\">\n"
 145 "      <arg type=\"i\" direction=\"out\" />\n"
 146 "    </method>\n"
 147 "    <signal name=\"TrackChange\">\n"
 148 "      <arg type=\"a{sv}\"/>\n"
 149 "    </signal>\n"
 150 "    <signal name=\"StatusChange\">\n"
 151 "      <arg type=\"(iiii)\"/>\n"
 152 "    </signal>\n"
 153 "    <signal name=\"CapsChange\">\n"
 154 "      <arg type=\"i\"/>\n"
 155 "    </signal>\n"
 156 "  </interface>\n"
 157 "</node>\n"
 158 ;
 159
 160 const char* psz_introspection_xml_data_tracklist =
 161 "<!DOCTYPE node PUBLIC \"-//freedesktop//DTD D-BUS Object Introspection 1.0//EN\"\n"
 162 "\"http://www.freedesktop.org/standards/dbus/1.0/introspect.dtd\">\n"
 163 "<node>"
 164 "  <interface name=\"org.freedesktop.DBus.Introspectable\">\n"
 165 "    <method name=\"Introspect\">\n"
 166 "      <arg name=\"data\" direction=\"out\" type=\"s\"/>\n"
 167 "    </method>\n"
 168 "  </interface>\n"
 169 "  <interface name=\"org.freedesktop.MediaPlayer\">\n"
 170 "    <method name=\"AddTrack\">\n"
 171 "      <arg type=\"s\" direction=\"in\" />\n"
 172 "      <arg type=\"b\" direction=\"in\" />\n"
 173 "    </method>\n"
 174 "    <method name=\"DelTrack\">\n"
 175 "      <arg type=\"i\" direction=\"in\" />\n"
 176 "    </method>\n"
 177 "    <method name=\"GetMetadata\">\n"
 178 "      <arg type=\"i\" direction=\"in\" />\n"
 179 "      <arg type=\"a{sv}\" direction=\"out\" />\n"
 180 "    </method>\n"
 181 "    <method name=\"GetCurrentTrack\">\n"
 182 "      <arg type=\"i\" direction=\"out\" />\n"
 183 "    </method>\n"
 184 "    <method name=\"GetLength\">\n"
 185 "      <arg type=\"i\" direction=\"out\" />\n"
 186 "    </method>\n"
 187 "    <method name=\"Loop\">\n"
 188 "      <arg type=\"b\" direction=\"in\" />\n"
 189 "    </method>\n"
 190 "    <method name=\"Random\">\n"
 191 "      <arg type=\"b\" direction=\"in\" />\n"
 192 "    </method>\n"
 193 "    <signal name=\"TrackListChange\">\n"
 194 "      <arg type=\"i\" />\n"
 195 "    </signal>\n"
 196 "  </interface>\n"
 197 "</node>\n"
 198 ;
 199
 200 #define MPRIS_DBUS_ROOT_PATH      "/"
 201 #define MPRIS_DBUS_PLAYER_PATH    "/Player"
 202 #define MPRIS_DBUS_TRACKLIST_PATH "/TrackList"
 203
 204 /* Handle  messages reception */
 205 DBUS_METHOD( handle_root );
 206 DBUS_METHOD( handle_player );
 207 DBUS_METHOD( handle_tracklist );
 208
 209 static DBusObjectPathVTable vlc_dbus_root_vtable = {
 210         NULL, handle_root, /* handler function */
 211         NULL, NULL, NULL, NULL
 212 };
 213
 214 static DBusObjectPathVTable vlc_dbus_player_vtable = {
 215         NULL, handle_player, /* handler function */
 216         NULL, NULL, NULL, NULL
 217 };
 218
 219 static DBusObjectPathVTable vlc_dbus_tracklist_vtable = {
 220         NULL, handle_tracklist, /* handler function */
 221         NULL, NULL, NULL, NULL
 222 };
 223