1 /*****************************************************************************
2 * stream_output.h : stream output module
3 *****************************************************************************
4 * Copyright (C) 2002-2008 the VideoLAN team
7 * Authors: Christophe Massiot <massiot@via.ecp.fr>
8 * Laurent Aimar <fenrir@via.ecp.fr>
9 * Eric Petit <titer@videolan.org>
10 * Jean-Paul Saman <jpsaman #_at_# m2x.nl>
11 * RĂ©mi Denis-Courmont
13 * This program is free software; you can redistribute it and/or modify
14 * it under the terms of the GNU General Public License as published by
15 * the Free Software Foundation; either version 2 of the License, or
16 * (at your option) any later version.
18 * This program is distributed in the hope that it will be useful,
19 * but WITHOUT ANY WARRANTY; without even the implied warranty of
20 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21 * GNU General Public License for more details.
23 * You should have received a copy of the GNU General Public License
24 * along with this program; if not, write to the Free Software
25 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
26 *****************************************************************************/
33 * This file defines structures and functions for stream ouput in vlc
42 /** Stream output instance */
43 struct sout_instance_t
49 /* meta data (Read only) XXX it won't be set before the first packet received */
52 /** count of output that can't control the space */
53 int i_out_pace_nocontrol;
56 sout_stream_t *p_stream;
59 sout_instance_sys_t *p_sys;
62 /** Stream output statistics */
65 SOUT_STATISTIC_DECODED_VIDEO,
66 SOUT_STATISTIC_DECODED_AUDIO,
67 SOUT_STATISTIC_DECODED_SUBTITLE,
69 /* Use them only if you do not goes through a access_out module */
70 SOUT_STATISTIC_SENT_PACKET,
71 SOUT_STATISTIC_SENT_BYTE,
75 VLC_EXPORT( void, sout_UpdateStatistic, ( sout_instance_t *p_sout, sout_statistic_t, int ) );
77 /****************************************************************************
78 * sout_stream_id_t: opaque (private for all sout_stream_t)
79 ****************************************************************************/
80 typedef struct sout_stream_id_t sout_stream_id_t;
82 /** Stream output access_output */
83 struct sout_access_out_t
91 /** Local counter reset each time it is transferred to stats */
95 sout_access_out_sys_t *p_sys;
96 int (*pf_seek)( sout_access_out_t *, off_t );
97 ssize_t (*pf_read)( sout_access_out_t *, block_t * );
98 ssize_t (*pf_write)( sout_access_out_t *, block_t * );
99 int (*pf_control)( sout_access_out_t *, int, va_list );
101 config_chain_t *p_cfg;
104 enum access_out_query_e
106 ACCESS_OUT_CONTROLS_PACE, /* arg1=bool *, can fail (assume true) */
109 VLC_EXPORT( sout_access_out_t *,sout_AccessOutNew, ( vlc_object_t *, const char *psz_access, const char *psz_name ) );
110 #define sout_AccessOutNew( obj, access, name ) \
111 sout_AccessOutNew( VLC_OBJECT(obj), access, name )
112 VLC_EXPORT( void, sout_AccessOutDelete, ( sout_access_out_t * ) );
113 VLC_EXPORT( int, sout_AccessOutSeek, ( sout_access_out_t *, off_t ) );
114 VLC_EXPORT( ssize_t, sout_AccessOutRead, ( sout_access_out_t *, block_t * ) );
115 VLC_EXPORT( ssize_t, sout_AccessOutWrite, ( sout_access_out_t *, block_t * ) );
116 VLC_EXPORT( int, sout_AccessOutControl, ( sout_access_out_t *, int, ... ) );
118 static inline bool sout_AccessOutCanControlPace( sout_access_out_t *p_ao )
121 if( sout_AccessOutControl( p_ao, ACCESS_OUT_CONTROLS_PACE, &b ) )
126 /** Muxer structure */
132 sout_instance_t *p_sout;
135 config_chain_t *p_cfg;
137 sout_access_out_t *p_access;
139 int (*pf_addstream)( sout_mux_t *, sout_input_t * );
140 int (*pf_delstream)( sout_mux_t *, sout_input_t * );
141 int (*pf_mux) ( sout_mux_t * );
142 int (*pf_control) ( sout_mux_t *, int, va_list );
144 /* here are all inputs accepted by muxer */
146 sout_input_t **pp_inputs;
149 sout_mux_sys_t *p_sys;
151 /* XXX private to stream_output.c */
152 /* if muxer doesn't support adding stream at any time then we first wait
153 * for stream then we refuse all stream and start muxing */
154 bool b_add_stream_any_time;
155 bool b_waiting_stream;
156 /* we wait one second after first stream added */
157 mtime_t i_add_stream_start;
160 enum sout_mux_query_e
163 MUX_CAN_ADD_STREAM_WHILE_MUXING, /* arg1= bool *, res=cannot fail */
165 MUX_GET_ADD_STREAM_WAIT, /* arg1= bool *, res=cannot fail */
166 MUX_GET_MIME, /* arg1= char ** res=can fail */
171 sout_instance_t *p_sout;
174 block_fifo_t *p_fifo;
180 VLC_EXPORT( sout_mux_t *, sout_MuxNew, ( sout_instance_t*, const char *, sout_access_out_t * ) );
181 VLC_EXPORT( sout_input_t *, sout_MuxAddStream, ( sout_mux_t *, es_format_t * ) );
182 VLC_EXPORT( void, sout_MuxDeleteStream, ( sout_mux_t *, sout_input_t * ) );
183 VLC_EXPORT( void, sout_MuxDelete, ( sout_mux_t * ) );
184 VLC_EXPORT( void, sout_MuxSendBuffer, ( sout_mux_t *, sout_input_t *, block_t * ) );
185 VLC_EXPORT( int, sout_MuxGetStream, (sout_mux_t *, int , mtime_t *));
187 static inline int sout_MuxControl( sout_mux_t *p_mux, int i_query, ... )
192 va_start( args, i_query );
193 i_result = p_mux->pf_control( p_mux, i_query, args );
198 /****************************************************************************
200 ****************************************************************************/
206 sout_instance_t *p_sout;
209 config_chain_t *p_cfg;
210 sout_stream_t *p_next;
212 /* Subpicture unit */
215 /* add, remove a stream */
216 sout_stream_id_t *(*pf_add)( sout_stream_t *, es_format_t * );
217 int (*pf_del)( sout_stream_t *, sout_stream_id_t * );
218 /* manage a packet */
219 int (*pf_send)( sout_stream_t *, sout_stream_id_t *, block_t* );
222 sout_stream_sys_t *p_sys;
225 VLC_EXPORT( void, sout_StreamChainDelete, (sout_stream_t *p_first, sout_stream_t *p_last ) );
226 VLC_EXPORT( sout_stream_t *, sout_StreamChainNew, (sout_instance_t *p_sout,
227 char *psz_chain, sout_stream_t *p_next, sout_stream_t **p_last) );
229 static inline sout_stream_id_t *sout_StreamIdAdd( sout_stream_t *s, es_format_t *fmt )
231 return s->pf_add( s, fmt );
233 static inline int sout_StreamIdDel( sout_stream_t *s, sout_stream_id_t *id )
235 return s->pf_del( s, id );
237 static inline int sout_StreamIdSend( sout_stream_t *s, sout_stream_id_t *id, block_t *b )
239 return s->pf_send( s, id, b );
242 /****************************************************************************
244 ****************************************************************************/
246 VLC_EXPORT( encoder_t *, sout_EncoderCreate, ( vlc_object_t *obj ) );
247 #define sout_EncoderCreate(o) sout_EncoderCreate(VLC_OBJECT(o))
249 /****************************************************************************
251 ****************************************************************************/
252 VLC_EXPORT(session_descriptor_t*,sout_AnnounceRegisterSDP, ( vlc_object_t *, const char *, const char *, announce_method_t* ) );
253 VLC_EXPORT( int, sout_AnnounceUnRegister, (vlc_object_t *,session_descriptor_t* ) );
254 #define sout_AnnounceRegisterSDP(o, sdp, addr, m) \
255 sout_AnnounceRegisterSDP(VLC_OBJECT (o), sdp, addr, m)
256 #define sout_AnnounceUnRegister(o, a) \
257 sout_AnnounceUnRegister(VLC_OBJECT (o), a)
259 VLC_EXPORT(announce_method_t*, sout_SAPMethod, (void) );
260 VLC_EXPORT(void, sout_MethodRelease, (announce_method_t *) );
264 VLC_EXPORT( char *, vlc_sdp_Start, ( vlc_object_t *obj, const char *cfgpref, const struct sockaddr *src, size_t srclen, const struct sockaddr *addr, size_t addrlen ) );
265 VLC_EXPORT( char *, sdp_AddMedia, (char **sdp, const char *type, const char *protocol, int dport, unsigned pt, bool bw_indep, unsigned bw, const char *ptname, unsigned clockrate, unsigned channels, const char *fmtp) );
266 VLC_EXPORT( char *, sdp_AddAttribute, (char **sdp, const char *name, const char *fmt, ...) LIBVLC_FORMAT( 3, 4 ) );