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 psz_uri session URI (needed for SAP address auto detection
87 * \param p_method an announce method descriptor
88 * \return the new session descriptor structure
90 session_descriptor_t *sout_AnnounceRegisterSDP( sout_instance_t *p_sout,
91 const char *psz_sdp, const char *psz_uri,
92 announce_method_t *p_method )
94 session_descriptor_t *p_session;
95 announce_handler_t *p_announce = (announce_handler_t*)
96 vlc_object_find( p_sout,
101 msg_Dbg( p_sout, "no announce handler found, creating one" );
102 p_announce = announce_HandlerCreate( p_sout );
105 msg_Err( p_sout, "Creation failed" );
108 vlc_object_yield( p_announce );
111 if( p_method->i_type != METHOD_TYPE_SAP )
113 msg_Warn( p_sout,"forcing SAP announcement");
116 p_session = sout_AnnounceSessionCreate();
117 p_session->psz_sdp = strdup( psz_sdp );
118 p_session->psz_uri = strdup( psz_uri );
119 announce_Register( p_announce, p_session, p_method );
121 vlc_object_release( p_announce );
126 * UnRegister an existing session
128 * \param p_sout a sout instance structure
129 * \param p_session the session descriptor
130 * \return VLC_SUCCESS or an error
132 int sout_AnnounceUnRegister( sout_instance_t *p_sout,
133 session_descriptor_t *p_session )
136 announce_handler_t *p_announce = (announce_handler_t*)
137 vlc_object_find( p_sout,
142 msg_Dbg( p_sout, "Unable to remove announce: no announce handler" );
145 i_ret = announce_UnRegister( p_announce, p_session );
147 vlc_object_release( p_announce );
153 * Create and initialize a session descriptor
155 * \return a new session descriptor
157 session_descriptor_t * sout_AnnounceSessionCreate(void)
159 session_descriptor_t *p_session;
161 p_session = (session_descriptor_t *)malloc( sizeof(session_descriptor_t));
165 p_session->p_sap = NULL;
166 p_session->psz_sdp = NULL;
167 p_session->psz_name = NULL;
168 p_session->psz_uri = NULL;
169 p_session->i_port = 0;
170 p_session->psz_group = NULL;
177 * Destroy a session descriptor and free all
179 * \param p_session the session to destroy
182 void sout_AnnounceSessionDestroy( session_descriptor_t *p_session )
186 FREE( p_session->psz_name );
187 FREE( p_session->psz_group );
188 FREE( p_session->psz_uri );
189 FREE( p_session->psz_sdp );
195 * Create and initialize an announcement method structure
197 * \param i_type METHOD_TYPE_SAP
198 * \return a new announce_method structure
200 announce_method_t * sout_AnnounceMethodCreate( int i_type )
202 announce_method_t *p_method;
204 p_method = (announce_method_t *)malloc( sizeof(announce_method_t) );
205 if( p_method == NULL )
208 p_method->i_type = i_type;
212 /************************************************************************
213 * Announce handler functions (private)
214 ************************************************************************/
217 * Create the announce handler object
219 * \param p_this a vlc_object structure
220 * \return the new announce handler or NULL on error
222 announce_handler_t *__announce_HandlerCreate( vlc_object_t *p_this )
224 announce_handler_t *p_announce;
226 p_announce = vlc_object_create( p_this, VLC_OBJECT_ANNOUNCE );
230 msg_Err( p_this, "out of memory" );
234 p_announce->p_sap = NULL;
236 vlc_object_attach( p_announce, p_this->p_vlc);
243 * Destroy a announce handler object
245 * \param p_announce the announce handler to destroy
246 * \return VLC_SUCCESS or an error
248 int announce_HandlerDestroy( announce_handler_t *p_announce )
251 if( p_announce->p_sap )
253 p_announce->p_sap->b_die = VLC_TRUE;
254 /* Wait for the SAP thread to exit */
255 vlc_thread_join( p_announce->p_sap );
256 announce_SAPHandlerDestroy( p_announce->p_sap );
259 /* Free the structure */
260 vlc_object_destroy( p_announce );
265 /* Register an announce */
266 int announce_Register( announce_handler_t *p_announce,
267 session_descriptor_t *p_session,
268 announce_method_t *p_method )
271 msg_Dbg( p_announce, "registering announce");
272 if( p_method->i_type == METHOD_TYPE_SAP )
274 /* Do we already have a SAP announce handler ? */
275 if( !p_announce->p_sap )
277 sap_handler_t *p_sap = announce_SAPHandlerCreate( p_announce );
278 msg_Dbg( p_announce, "creating SAP announce handler");
281 msg_Err( p_announce, "SAP handler creation failed" );
284 p_announce->p_sap = p_sap;
286 /* this will set p_session->p_sap for later deletion */
287 msg_Dbg( p_announce, "adding SAP session");
288 p_announce->p_sap->pf_add( p_announce->p_sap, p_session );
292 msg_Dbg( p_announce, "Announce type unsupported" );
299 /* Unregister an announce */
300 int announce_UnRegister( announce_handler_t *p_announce,
301 session_descriptor_t *p_session )
303 msg_Dbg( p_announce, "unregistering announce" );
304 if( p_session->p_sap != NULL ) /* SAP Announce */
306 if( !p_announce->p_sap )
308 msg_Err( p_announce, "can't remove announce, no SAP handler");
311 p_announce->p_sap->pf_del( p_announce->p_sap, p_session );