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vlc/include/stream_output.h

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/*****************************************************************************
* stream_output.h : stream output module
*****************************************************************************
* Copyright (C) 2002-2005 the VideoLAN team
* $Id$
*
* Authors: Christophe Massiot <massiot@via.ecp.fr>
* Laurent Aimar <fenrir@via.ecp.fr>
* Eric Petit <titer@videolan.org>
* Jean-Paul Saman <jpsaman #_at_# m2x.nl>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
*****************************************************************************/
/*****************************************************************************
* sout_instance_t: stream output thread descriptor
*****************************************************************************/
#include "vlc_es.h"
/****************************************************************************
* sout_instance_t: p_sout
****************************************************************************/
struct sout_instance_t
{
VLC_COMMON_MEMBERS
char *psz_sout;
char *psz_chain;
/* meta data (Read only) XXX it won't be set before the first packet received */
vlc_meta_t *p_meta;
int i_out_pace_nocontrol; /* count of output that can't control the space */
vlc_mutex_t lock;
sout_stream_t *p_stream;
/* sout private */
sout_instance_sys_t *p_sys;
};
/****************************************************************************
* sout_cfg_t:
****************************************************************************/
struct sout_cfg_t
{
sout_cfg_t *p_next;
char *psz_name;
char *psz_value;
};
#define sout_CfgParse( a, b, c, d ) __sout_CfgParse( VLC_OBJECT(a), b, c, d )
VLC_EXPORT( void, __sout_CfgParse, ( vlc_object_t *, char *psz_prefix, const char **ppsz_options, sout_cfg_t * ) );
VLC_EXPORT( char *, sout_CfgCreate, ( char **, sout_cfg_t **, char * ) );
/****************************************************************************
* sout_stream_id_t: opaque (private for all sout_stream_t)
****************************************************************************/
typedef struct sout_stream_id_t sout_stream_id_t;
/****************************************************************************
* sout_packetizer_input_t: p_sout <-> p_packetizer
****************************************************************************/
struct sout_packetizer_input_t
{
sout_instance_t *p_sout;
es_format_t *p_fmt;
sout_stream_id_t *id;
};
#define sout_NewInstance(a,b) __sout_NewInstance(VLC_OBJECT(a),b)
VLC_EXPORT( sout_instance_t *, __sout_NewInstance, ( vlc_object_t *, char * ) );
VLC_EXPORT( void, sout_DeleteInstance, ( sout_instance_t * ) );
VLC_EXPORT( sout_packetizer_input_t *, sout_InputNew,( sout_instance_t *, es_format_t * ) );
VLC_EXPORT( int, sout_InputDelete, ( sout_packetizer_input_t * ) );
VLC_EXPORT( int, sout_InputSendBuffer, ( sout_packetizer_input_t *, block_t* ) );
/****************************************************************************
* sout_access_out_t:
****************************************************************************/
struct sout_access_out_t
{
VLC_COMMON_MEMBERS
module_t *p_module;
sout_instance_t *p_sout;
char *psz_access;
sout_cfg_t *p_cfg;
char *psz_name;
sout_access_out_sys_t *p_sys;
int (*pf_seek)( sout_access_out_t *, off_t );
int (*pf_read)( sout_access_out_t *, block_t * );
int (*pf_write)( sout_access_out_t *, block_t * );
};
VLC_EXPORT( sout_access_out_t *,sout_AccessOutNew, ( sout_instance_t *, char *psz_access, char *psz_name ) );
VLC_EXPORT( void, sout_AccessOutDelete, ( sout_access_out_t * ) );
VLC_EXPORT( int, sout_AccessOutSeek, ( sout_access_out_t *, off_t ) );
VLC_EXPORT( int, sout_AccessOutRead, ( sout_access_out_t *, block_t * ) );
VLC_EXPORT( int, sout_AccessOutWrite, ( sout_access_out_t *, block_t * ) );
/****************************************************************************
* mux:
****************************************************************************/
struct sout_mux_t
{
VLC_COMMON_MEMBERS
module_t *p_module;
sout_instance_t *p_sout;
char *psz_mux;
sout_cfg_t *p_cfg;
sout_access_out_t *p_access;
int (*pf_addstream)( sout_mux_t *, sout_input_t * );
int (*pf_delstream)( sout_mux_t *, sout_input_t * );
int (*pf_mux) ( sout_mux_t * );
int (*pf_control) ( sout_mux_t *, int, va_list );
/* here are all inputs accepted by muxer */
int i_nb_inputs;
sout_input_t **pp_inputs;
/* mux private */
sout_mux_sys_t *p_sys;
/* XXX private to stream_output.c */
/* if muxer doesn't support adding stream at any time then we first wait
* for stream then we refuse all stream and start muxing */
vlc_bool_t b_add_stream_any_time;
vlc_bool_t b_waiting_stream;
/* we wait one second after first stream added */
mtime_t i_add_stream_start;
};
enum sout_mux_query_e
{
/* capabilities */
MUX_CAN_ADD_STREAM_WHILE_MUXING, /* arg1= vlc_bool_t *, res=cannot fail */
/* properties */
MUX_GET_ADD_STREAM_WAIT, /* arg1= vlc_bool_t *, res=cannot fail */
MUX_GET_MIME, /* arg1= char ** res=can fail */
};
struct sout_input_t
{
sout_instance_t *p_sout;
es_format_t *p_fmt;
block_fifo_t *p_fifo;
void *p_sys;
};
VLC_EXPORT( sout_mux_t *, sout_MuxNew, ( sout_instance_t*, char *, sout_access_out_t * ) );
VLC_EXPORT( sout_input_t *, sout_MuxAddStream, ( sout_mux_t *, es_format_t * ) );
VLC_EXPORT( void, sout_MuxDeleteStream, ( sout_mux_t *, sout_input_t * ) );
VLC_EXPORT( void, sout_MuxDelete, ( sout_mux_t * ) );
VLC_EXPORT( void, sout_MuxSendBuffer, ( sout_mux_t *, sout_input_t *, block_t * ) );
static inline int sout_MuxControl( sout_mux_t *p_mux, int i_query, ... )
{
va_list args;
int i_result;
va_start( args, i_query );
i_result = p_mux->pf_control( p_mux, i_query, args );
va_end( args );
return i_result;
}
/****************************************************************************
* sout_stream:
****************************************************************************/
struct sout_stream_t
{
VLC_COMMON_MEMBERS
module_t *p_module;
sout_instance_t *p_sout;
char *psz_name;
sout_cfg_t *p_cfg;
char *psz_next;
/* Subpicture unit */
spu_t *p_spu;
/* add, remove a stream */
sout_stream_id_t *(*pf_add)( sout_stream_t *, es_format_t * );
int (*pf_del)( sout_stream_t *, sout_stream_id_t * );
/* manage a packet */
int (*pf_send)( sout_stream_t *, sout_stream_id_t *, block_t* );
/* private */
sout_stream_sys_t *p_sys;
};
VLC_EXPORT( sout_stream_t *, sout_StreamNew, ( sout_instance_t *, char *psz_chain ) );
VLC_EXPORT( void, sout_StreamDelete, ( sout_stream_t * ) );
static inline sout_stream_id_t *sout_StreamIdAdd( sout_stream_t *s, es_format_t *fmt )
{
return s->pf_add( s, fmt );
}
static inline int sout_StreamIdDel( sout_stream_t *s, sout_stream_id_t *id )
{
return s->pf_del( s, id );
}
static inline int sout_StreamIdSend( sout_stream_t *s, sout_stream_id_t *id, block_t *b )
{
return s->pf_send( s, id, b );
}
/****************************************************************************
* Announce handler mess
****************************************************************************/
struct sap_session_t;
struct session_descriptor_t
{
char *psz_name;
char *psz_uri;
int i_port;
int i_ttl;
int i_payload; /* SAP Payload type */
char *psz_group;
sap_session_t *p_sap; /* If we have a sap session, remember it */
char *psz_sdp;
};
#define METHOD_TYPE_SAP 1
#define METHOD_TYPE_SLP 2
struct announce_method_t
{
int i_type;
};
/* A SAP session descriptor, enqueued in the SAP handler queue */
struct sap_session_t
{
char *psz_sdp;
uint8_t *psz_data;
unsigned i_length;
sap_address_t *p_address;
/* Last and next send */
mtime_t i_last;
mtime_t i_next;
};
/* The SAP handler, running in a separate thread */
struct sap_handler_t
{
VLC_COMMON_MEMBERS /* needed to create a thread */
sap_session_t **pp_sessions;
sap_address_t **pp_addresses;
vlc_bool_t b_control;
int i_sessions;
int i_addresses;
int i_current_session;
int (*pf_add) ( sap_handler_t*, session_descriptor_t *);
int (*pf_del) ( sap_handler_t*, session_descriptor_t *);
/* private data, not in p_sys as there is one kind of sap_handler_t */
};
/* The main announce handler object */
struct announce_handler_t
{
VLC_COMMON_MEMBERS
sap_handler_t *p_sap;
};
/* End */
static inline sout_cfg_t *sout_cfg_find( sout_cfg_t *p_cfg, char *psz_name )
{
while( p_cfg && strcmp( p_cfg->psz_name, psz_name ) )
{
p_cfg = p_cfg->p_next;
}
return p_cfg;
}
static inline char *sout_cfg_find_value( sout_cfg_t *p_cfg, char *psz_name )
{
while( p_cfg && strcmp( p_cfg->psz_name, psz_name ) )
{
p_cfg = p_cfg->p_next;
}
if( p_cfg && p_cfg->psz_value )
{
return( p_cfg->psz_value );
}
return NULL;
}
/* Announce system */
VLC_EXPORT( int, sout_AnnounceRegister, (sout_instance_t *,session_descriptor_t*, announce_method_t* ) );
VLC_EXPORT(session_descriptor_t*,sout_AnnounceRegisterSDP, (sout_instance_t *,const char *, announce_method_t* ) );
VLC_EXPORT( int, sout_AnnounceUnRegister, (sout_instance_t *,session_descriptor_t* ) );
VLC_EXPORT(session_descriptor_t*,sout_AnnounceSessionCreate, (void) );
VLC_EXPORT(void, sout_AnnounceSessionDestroy, (session_descriptor_t *) );
VLC_EXPORT(announce_method_t*, sout_AnnounceMethodCreate, (int) );
#define announce_HandlerCreate(a) __announce_HandlerCreate(VLC_OBJECT(a))
announce_handler_t* __announce_HandlerCreate( vlc_object_t *);
/* Private functions for the announce handler */
int announce_HandlerDestroy( announce_handler_t * );
int announce_Register( announce_handler_t *p_announce,
session_descriptor_t *p_session,
announce_method_t *p_method );
int announce_UnRegister( announce_handler_t *p_announce,
session_descriptor_t *p_session );
sap_handler_t *announce_SAPHandlerCreate( announce_handler_t *p_announce );
void announce_SAPHandlerDestroy( sap_handler_t *p_sap );
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