253 lines
8.6 KiB
C
253 lines
8.6 KiB
C
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/*****************************************************************************
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* vlc_sout.h : stream output module
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*****************************************************************************
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* Copyright (C) 2002-2008 VLC authors and VideoLAN
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* $Id: b9366f790374562525f49d5449ec882fff348ddf $
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*
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* Authors: Christophe Massiot <massiot@via.ecp.fr>
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* Laurent Aimar <fenrir@via.ecp.fr>
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* Eric Petit <titer@videolan.org>
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* Jean-Paul Saman <jpsaman #_at_# m2x.nl>
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* Rémi Denis-Courmont
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation; either version 2.1 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
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*****************************************************************************/
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#ifndef VLC_SOUT_H_
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#define VLC_SOUT_H_
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/**
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* \file
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* This file defines structures and functions for stream output in vlc
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*/
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include <sys/types.h>
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#include <vlc_es.h>
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/** Stream output instance (FIXME: should be private to src/ to avoid
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* invalid unsynchronized access) */
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struct sout_instance_t
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{
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VLC_COMMON_MEMBERS
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char *psz_sout;
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/** count of output that can't control the space */
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int i_out_pace_nocontrol;
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vlc_mutex_t lock;
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sout_stream_t *p_stream;
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};
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/****************************************************************************
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* sout_stream_id_sys_t: opaque (private for all sout_stream_t)
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****************************************************************************/
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typedef struct sout_stream_id_sys_t sout_stream_id_sys_t;
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/** Stream output access_output */
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struct sout_access_out_t
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{
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VLC_COMMON_MEMBERS
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module_t *p_module;
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char *psz_access;
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char *psz_path;
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sout_access_out_sys_t *p_sys;
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int (*pf_seek)( sout_access_out_t *, off_t );
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ssize_t (*pf_read)( sout_access_out_t *, block_t * );
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ssize_t (*pf_write)( sout_access_out_t *, block_t * );
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int (*pf_control)( sout_access_out_t *, int, va_list );
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config_chain_t *p_cfg;
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};
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enum access_out_query_e
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{
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ACCESS_OUT_CONTROLS_PACE, /* arg1=bool *, can fail (assume true) */
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ACCESS_OUT_CAN_SEEK, /* arg1=bool *, can fail (assume true) */
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};
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VLC_API sout_access_out_t * sout_AccessOutNew( vlc_object_t *, const char *psz_access, const char *psz_name ) VLC_USED;
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#define sout_AccessOutNew( obj, access, name ) \
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sout_AccessOutNew( VLC_OBJECT(obj), access, name )
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VLC_API void sout_AccessOutDelete( sout_access_out_t * );
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VLC_API int sout_AccessOutSeek( sout_access_out_t *, off_t );
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VLC_API ssize_t sout_AccessOutRead( sout_access_out_t *, block_t * );
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VLC_API ssize_t sout_AccessOutWrite( sout_access_out_t *, block_t * );
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VLC_API int sout_AccessOutControl( sout_access_out_t *, int, ... );
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static inline bool sout_AccessOutCanControlPace( sout_access_out_t *p_ao )
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{
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bool b;
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if( sout_AccessOutControl( p_ao, ACCESS_OUT_CONTROLS_PACE, &b ) )
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return true;
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return b;
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}
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/** Muxer structure */
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struct sout_mux_t
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{
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VLC_COMMON_MEMBERS
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module_t *p_module;
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sout_instance_t *p_sout;
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char *psz_mux;
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config_chain_t *p_cfg;
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sout_access_out_t *p_access;
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int (*pf_addstream)( sout_mux_t *, sout_input_t * );
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int (*pf_delstream)( sout_mux_t *, sout_input_t * );
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int (*pf_mux) ( sout_mux_t * );
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int (*pf_control) ( sout_mux_t *, int, va_list );
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/* here are all inputs accepted by muxer */
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int i_nb_inputs;
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sout_input_t **pp_inputs;
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/* mux private */
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sout_mux_sys_t *p_sys;
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/* XXX private to stream_output.c */
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/* if muxer doesn't support adding stream at any time then we first wait
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* for stream then we refuse all stream and start muxing */
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bool b_add_stream_any_time;
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bool b_waiting_stream;
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/* we wait one second after first stream added */
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mtime_t i_add_stream_start;
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};
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enum sout_mux_query_e
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{
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/* capabilities */
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MUX_CAN_ADD_STREAM_WHILE_MUXING, /* arg1= bool *, res=cannot fail */
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/* properties */
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MUX_GET_ADD_STREAM_WAIT, /* arg1= bool *, res=cannot fail */
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MUX_GET_MIME, /* arg1= char ** res=can fail */
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};
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struct sout_input_t
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{
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es_format_t *p_fmt;
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block_fifo_t *p_fifo;
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void *p_sys;
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};
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VLC_API sout_mux_t * sout_MuxNew( sout_instance_t*, const char *, sout_access_out_t * ) VLC_USED;
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VLC_API sout_input_t * sout_MuxAddStream( sout_mux_t *, es_format_t * ) VLC_USED;
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VLC_API void sout_MuxDeleteStream( sout_mux_t *, sout_input_t * );
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VLC_API void sout_MuxDelete( sout_mux_t * );
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VLC_API int sout_MuxSendBuffer( sout_mux_t *, sout_input_t *, block_t * );
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VLC_API int sout_MuxGetStream(sout_mux_t *, int , mtime_t *);
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static inline int sout_MuxControl( sout_mux_t *p_mux, int i_query, ... )
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{
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va_list args;
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int i_result;
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va_start( args, i_query );
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i_result = p_mux->pf_control( p_mux, i_query, args );
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va_end( args );
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return i_result;
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}
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/****************************************************************************
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* sout_stream:
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****************************************************************************/
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struct sout_stream_t
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{
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VLC_COMMON_MEMBERS
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module_t *p_module;
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sout_instance_t *p_sout;
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char *psz_name;
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config_chain_t *p_cfg;
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sout_stream_t *p_next;
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/* add, remove a stream */
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sout_stream_id_sys_t *(*pf_add)( sout_stream_t *, es_format_t * );
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int (*pf_del)( sout_stream_t *, sout_stream_id_sys_t * );
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/* manage a packet */
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int (*pf_send)( sout_stream_t *, sout_stream_id_sys_t *, block_t* );
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sout_stream_sys_t *p_sys;
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bool pace_nocontrol;
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};
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VLC_API void sout_StreamChainDelete(sout_stream_t *p_first, sout_stream_t *p_last );
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VLC_API sout_stream_t *sout_StreamChainNew(sout_instance_t *p_sout,
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char *psz_chain, sout_stream_t *p_next, sout_stream_t **p_last) VLC_USED;
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static inline sout_stream_id_sys_t *sout_StreamIdAdd( sout_stream_t *s, es_format_t *fmt )
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{
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return s->pf_add( s, fmt );
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}
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static inline int sout_StreamIdDel( sout_stream_t *s, sout_stream_id_sys_t *id )
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{
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return s->pf_del( s, id );
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}
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static inline int sout_StreamIdSend( sout_stream_t *s, sout_stream_id_sys_t *id, block_t *b )
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{
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return s->pf_send( s, id, b );
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}
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/****************************************************************************
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* Encoder
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****************************************************************************/
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VLC_API encoder_t * sout_EncoderCreate( vlc_object_t *obj );
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#define sout_EncoderCreate(o) sout_EncoderCreate(VLC_OBJECT(o))
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/****************************************************************************
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* Announce handler
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****************************************************************************/
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VLC_API session_descriptor_t* sout_AnnounceRegisterSDP( vlc_object_t *, const char *, const char * ) VLC_USED;
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VLC_API int sout_AnnounceUnRegister(vlc_object_t *,session_descriptor_t* );
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#define sout_AnnounceRegisterSDP(o, sdp, addr) \
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sout_AnnounceRegisterSDP(VLC_OBJECT (o), sdp, addr)
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#define sout_AnnounceUnRegister(o, a) \
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sout_AnnounceUnRegister(VLC_OBJECT (o), a)
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/** SDP */
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struct sockaddr;
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VLC_API 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 ) VLC_USED;
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VLC_API 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);
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VLC_API char * sdp_AddAttribute(char **sdp, const char *name, const char *fmt, ...) VLC_FORMAT( 3, 4 );
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/** Description module */
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typedef struct sout_description_data_t
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{
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int i_es;
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es_format_t **es;
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vlc_sem_t *sem;
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} sout_description_data_t;
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#ifdef __cplusplus
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}
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#endif
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#endif
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