1 /*****************************************************************************
2 * announce.c : announce handler
3 *****************************************************************************
4 * Copyright (C) 2002-2004 the VideoLAN team
7 * Authors: Clément Stenac <zorglub@videolan.org>
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
22 *****************************************************************************/
24 /*****************************************************************************
26 *****************************************************************************/
27 #include <stdlib.h> /* free() */
28 #include <stdio.h> /* sprintf() */
29 #include <string.h> /* strerror() */
34 /*****************************************************************************
36 *****************************************************************************/
37 #define FREE( p ) if( p ) { free( p ); (p) = NULL; }
40 /****************************************************************************
42 ****************************************************************************/
45 * Register a new session with the announce handler
47 * \param p_sout a sout instance structure
48 * \param p_session a session descriptor
49 * \param p_method an announce method descriptor
50 * \return VLC_SUCCESS or an error
52 int sout_AnnounceRegister( sout_instance_t *p_sout,
53 session_descriptor_t *p_session,
54 announce_method_t *p_method )
57 announce_handler_t *p_announce = (announce_handler_t*)
58 vlc_object_find( p_sout,
64 msg_Dbg( p_sout, "No announce handler found, creating one" );
65 p_announce = announce_HandlerCreate( p_sout );
68 msg_Err( p_sout, "Creation failed" );
71 vlc_object_yield( p_announce );
72 msg_Dbg( p_sout,"Creation done" );
75 i_ret = announce_Register( p_announce, p_session, p_method );
76 vlc_object_release( p_announce );
82 * Register a new session with the announce handler, using a pregenerated SDP
84 * \param p_sout a sout instance structure
85 * \param psz_sdp the SDP to register
86 * \param p_method an announce method descriptor
87 * \return the new session descriptor structure
89 session_descriptor_t *sout_AnnounceRegisterSDP( sout_instance_t *p_sout,
90 char *psz_sdp, announce_method_t *p_method )
92 session_descriptor_t *p_session;
93 announce_handler_t *p_announce = (announce_handler_t*)
94 vlc_object_find( p_sout,
99 msg_Dbg( p_sout, "no announce handler found, creating one" );
100 p_announce = announce_HandlerCreate( p_sout );
103 msg_Err( p_sout, "Creation failed" );
106 vlc_object_yield( p_announce );
109 if( p_method->i_type != METHOD_TYPE_SAP )
111 msg_Warn( p_sout,"forcing SAP announcement");
114 p_session = sout_AnnounceSessionCreate();
115 p_session->psz_sdp = strdup( psz_sdp );
116 announce_Register( p_announce, p_session, p_method );
118 vlc_object_release( p_announce );
123 * UnRegister an existing session
125 * \param p_sout a sout instance structure
126 * \param p_session the session descriptor
127 * \return VLC_SUCCESS or an error
129 int sout_AnnounceUnRegister( sout_instance_t *p_sout,
130 session_descriptor_t *p_session )
133 announce_handler_t *p_announce = (announce_handler_t*)
134 vlc_object_find( p_sout,
139 msg_Dbg( p_sout, "Unable to remove announce: no announce handler" );
142 i_ret = announce_UnRegister( p_announce, p_session );
144 vlc_object_release( p_announce );
150 * Create and initialize a session descriptor
152 * \return a new session descriptor
154 session_descriptor_t * sout_AnnounceSessionCreate(void)
156 session_descriptor_t *p_session;
158 p_session = (session_descriptor_t *)malloc( sizeof(session_descriptor_t));
162 p_session->p_sap = NULL;
163 p_session->psz_sdp = NULL;
164 p_session->psz_name = NULL;
165 p_session->psz_uri = NULL;
166 p_session->i_port = 0;
167 p_session->psz_group = NULL;
174 * Destroy a session descriptor and free all
176 * \param p_session the session to destroy
179 void sout_AnnounceSessionDestroy( session_descriptor_t *p_session )
183 FREE( p_session->psz_name );
184 FREE( p_session->psz_group );
185 FREE( p_session->psz_uri );
186 FREE( p_session->psz_sdp );
192 * Create and initialize an announcement method structure
194 * \param i_type METHOD_TYPE_SAP or METHOD_TYPE_SLP
195 * \return a new announce_method structure
197 announce_method_t * sout_AnnounceMethodCreate( int i_type )
199 announce_method_t *p_method;
201 p_method = (announce_method_t *)malloc( sizeof(announce_method_t) );
205 p_method->i_type = i_type;
206 if( i_type == METHOD_TYPE_SAP )
208 p_method->psz_address = NULL;
213 /************************************************************************
214 * Announce handler functions (private)
215 ************************************************************************/
218 * Create the announce handler object
220 * \param p_this a vlc_object structure
221 * \return the new announce handler or NULL on error
223 announce_handler_t *__announce_HandlerCreate( vlc_object_t *p_this )
225 announce_handler_t *p_announce;
227 p_announce = vlc_object_create( p_this, VLC_OBJECT_ANNOUNCE );
231 msg_Err( p_this, "out of memory" );
235 p_announce->p_sap = NULL;
237 vlc_object_attach( p_announce, p_this->p_vlc);
244 * Destroy a announce handler object
246 * \param p_announce the announce handler to destroy
247 * \return VLC_SUCCESS or an error
249 int announce_HandlerDestroy( announce_handler_t *p_announce )
252 if( p_announce->p_sap )
254 p_announce->p_sap->b_die = VLC_TRUE;
255 /* Wait for the SAP thread to exit */
256 vlc_thread_join( p_announce->p_sap );
257 announce_SAPHandlerDestroy( p_announce->p_sap );
260 /* Free the structure */
261 vlc_object_destroy( p_announce );
266 /* Register an announce */
267 int announce_Register( announce_handler_t *p_announce,
268 session_descriptor_t *p_session,
269 announce_method_t *p_method )
272 msg_Dbg( p_announce, "registering announce");
273 if( p_method->i_type == METHOD_TYPE_SAP )
275 /* Do we already have a SAP announce handler ? */
276 if( !p_announce->p_sap )
278 sap_handler_t *p_sap = announce_SAPHandlerCreate( p_announce );
279 msg_Dbg( p_announce, "creating SAP announce handler");
282 msg_Err( p_announce, "SAP handler creation failed" );
285 p_announce->p_sap = p_sap;
287 /* this will set p_session->p_sap for later deletion */
288 msg_Dbg( p_announce, "adding SAP session");
289 p_announce->p_sap->pf_add( p_announce->p_sap, p_session, p_method );
291 else if( p_method->i_type == METHOD_TYPE_SLP )
293 msg_Dbg( p_announce, "SLP unsupported at the moment" );
298 msg_Dbg( p_announce, "Announce type unsupported" );
305 /* Unregister an announce */
306 int announce_UnRegister( announce_handler_t *p_announce,
307 session_descriptor_t *p_session )
309 msg_Dbg( p_announce, "unregistering announce" );
310 if( p_session->p_sap != NULL ) /* SAP Announce */
312 if( !p_announce->p_sap )
314 msg_Err( p_announce, "can't remove announce, no SAP handler");
317 p_announce->p_sap->pf_del( p_announce->p_sap, p_session );