1 /*****************************************************************************
2 * announce.c : announce handler
3 *****************************************************************************
4 * Copyright (C) 2002-2007 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., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
22 *****************************************************************************/
24 /*****************************************************************************
26 *****************************************************************************/
27 #include <stdlib.h> /* free() */
28 #include <stdio.h> /* sprintf() */
29 #include <string.h> /* strerror() */
33 #include "stream_output.h"
35 struct announce_method_t
39 /****************************************************************************
41 ****************************************************************************/
44 * Register a new session with the announce handler
46 * \param p_sout a sout instance structure
47 * \param p_session a session descriptor
48 * \param p_method an announce method descriptor
49 * \return VLC_SUCCESS or an error
51 int sout_AnnounceRegister( sout_instance_t *p_sout,
52 session_descriptor_t *p_session,
53 announce_method_t *p_method )
56 announce_handler_t *p_announce = (announce_handler_t*)
57 vlc_object_find( p_sout,
63 msg_Dbg( p_sout, "No announce handler found, creating one" );
64 p_announce = announce_HandlerCreate( p_sout );
67 msg_Err( p_sout, "Creation failed" );
70 vlc_object_yield( p_announce );
71 msg_Dbg( p_sout, "creation done" );
74 i_ret = announce_Register( p_announce, p_session, p_method );
75 vlc_object_release( p_announce );
81 * Register a new session with the announce handler, using a pregenerated SDP
83 * \param p_sout a sout instance structure
84 * \param psz_sdp the SDP to register
85 * \param psz_uri session URI (needed for SAP address auto detection
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 const char *psz_sdp, const char *psz_uri,
91 announce_method_t *p_method )
93 session_descriptor_t *p_session;
94 announce_handler_t *p_announce = (announce_handler_t*)
95 vlc_object_find( p_sout,
100 msg_Dbg( p_sout, "no announce handler found, creating one" );
101 p_announce = announce_HandlerCreate( p_sout );
104 msg_Err( p_sout, "Creation failed" );
107 vlc_object_yield( p_announce );
110 p_session = sout_AnnounceSessionCreate();
111 p_session->psz_sdp = strdup( psz_sdp );
112 p_session->psz_uri = strdup( psz_uri );
113 announce_Register( p_announce, p_session, p_method );
115 vlc_object_release( p_announce );
120 * UnRegister an existing session
122 * \param p_sout a sout instance structure
123 * \param p_session the session descriptor
124 * \return VLC_SUCCESS or an error
126 int sout_AnnounceUnRegister( sout_instance_t *p_sout,
127 session_descriptor_t *p_session )
130 announce_handler_t *p_announce = (announce_handler_t*)
131 vlc_object_find( p_sout,
136 msg_Dbg( p_sout, "unable to remove announce: no announce handler" );
139 i_ret = announce_UnRegister( p_announce, p_session );
141 vlc_object_release( p_announce );
147 * Create and initialize a session descriptor
149 * \return a new session descriptor
151 session_descriptor_t * sout_AnnounceSessionCreate(void)
153 session_descriptor_t *p_session;
155 p_session = (session_descriptor_t *)malloc( sizeof(session_descriptor_t));
156 if (p_session == NULL)
159 memset (p_session, 0, sizeof (*p_session));
164 * Destroy a session descriptor and free all
166 * \param p_session the session to destroy
169 void sout_AnnounceSessionDestroy( session_descriptor_t *p_session )
173 FREENULL( p_session->psz_name );
174 FREENULL( p_session->psz_group );
175 FREENULL( p_session->psz_uri );
176 FREENULL( p_session->psz_sdp );
182 * \return the SAP announce method
184 announce_method_t * sout_SAPMethod (void)
189 /************************************************************************
190 * Announce handler functions (private)
191 ************************************************************************/
194 * Create the announce handler object
196 * \param p_this a vlc_object structure
197 * \return the new announce handler or NULL on error
199 announce_handler_t *__announce_HandlerCreate( vlc_object_t *p_this )
201 announce_handler_t *p_announce;
203 p_announce = vlc_object_create( p_this, VLC_OBJECT_ANNOUNCE );
207 msg_Err( p_this, "out of memory" );
211 p_announce->p_sap = NULL;
212 vlc_object_attach( p_announce, p_this->p_libvlc);
218 * Destroy a announce handler object
220 * \param p_announce the announce handler to destroy
221 * \return VLC_SUCCESS or an error
223 int announce_HandlerDestroy( announce_handler_t *p_announce )
225 if( p_announce->p_sap )
227 ((vlc_object_t *)p_announce->p_sap)->b_die = VLC_TRUE;
228 /* Wait for the SAP thread to exit */
229 vlc_thread_join( (vlc_object_t *)p_announce->p_sap );
230 announce_SAPHandlerDestroy( p_announce->p_sap );
233 /* Free the structure */
234 vlc_object_destroy( p_announce );
239 /* Register an announce */
240 int announce_Register( announce_handler_t *p_announce,
241 session_descriptor_t *p_session,
242 announce_method_t *p_method )
245 msg_Dbg( p_announce, "registering announce");
246 if( p_method == &sap_method )
248 /* Do we already have a SAP announce handler ? */
249 if( !p_announce->p_sap )
251 sap_handler_t *p_sap = announce_SAPHandlerCreate( p_announce );
252 msg_Dbg( p_announce, "creating SAP announce handler");
255 msg_Err( p_announce, "SAP handler creation failed" );
258 p_announce->p_sap = p_sap;
260 /* this will set p_session->p_sap for later deletion */
261 msg_Dbg( p_announce, "adding SAP session");
262 p_announce->p_sap->pf_add( p_announce->p_sap, p_session );
266 msg_Err( p_announce, "announce type unsupported" );
273 /* Unregister an announce */
274 int announce_UnRegister( announce_handler_t *p_announce,
275 session_descriptor_t *p_session )
277 msg_Dbg( p_announce, "unregistering announce" );
278 if( p_announce->p_sap )
279 p_announce->p_sap->pf_del( p_announce->p_sap, p_session );