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/*****************************************************************************
* stream_output.h : stream output module
*****************************************************************************
* Copyright (C) 2002-2008 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>
* Rémi Denis-Courmont
*
* 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., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
*****************************************************************************/
#ifndef VLC_SOUT_H_
#define VLC_SOUT_H_
/**
* \file
* This file defines structures and functions for stream ouput in vlc
*/
#ifdef __cplusplus
extern "C" {
#endif
#include <vlc_es.h>
/** Stream output instance */
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;
/** count of output that can't control the space */
int i_out_pace_nocontrol;
vlc_mutex_t lock;
sout_stream_t *p_stream;
/** Private */
sout_instance_sys_t *p_sys;
};
/** Stream output statistics */
typedef enum
{
SOUT_STATISTIC_DECODED_VIDEO,
SOUT_STATISTIC_DECODED_AUDIO,
SOUT_STATISTIC_DECODED_SUBTITLE,
/* Use them only if you do not goes through a access_out module */
SOUT_STATISTIC_SENT_PACKET,
SOUT_STATISTIC_SENT_BYTE,
} sout_statistic_t;
VLC_EXPORT( void, sout_UpdateStatistic, ( sout_instance_t *p_sout, sout_statistic_t, int ) );
/****************************************************************************
* sout_stream_id_t: opaque (private for all sout_stream_t)
****************************************************************************/
typedef struct sout_stream_id_t sout_stream_id_t;
/** Stream output access_output */
struct sout_access_out_t
{
VLC_COMMON_MEMBERS
module_t *p_module;
char *psz_access;
int i_writes;
/** Local counter reset each time it is transferred to stats */
int64_t i_sent_bytes;
char *psz_path;
sout_access_out_sys_t *p_sys;
int (*pf_seek)( sout_access_out_t *, off_t );
ssize_t (*pf_read)( sout_access_out_t *, block_t * );
ssize_t (*pf_write)( sout_access_out_t *, block_t * );
int (*pf_control)( sout_access_out_t *, int, va_list );
config_chain_t *p_cfg;
};
enum access_out_query_e
{
ACCESS_OUT_CONTROLS_PACE, /* arg1=bool *, can fail (assume true) */
};
VLC_EXPORT( sout_access_out_t *,sout_AccessOutNew, ( vlc_object_t *, const char *psz_access, const char *psz_name ) );
#define sout_AccessOutNew( obj, access, name ) \
sout_AccessOutNew( VLC_OBJECT(obj), access, name )
VLC_EXPORT( void, sout_AccessOutDelete, ( sout_access_out_t * ) );
VLC_EXPORT( int, sout_AccessOutSeek, ( sout_access_out_t *, off_t ) );
VLC_EXPORT( ssize_t, sout_AccessOutRead, ( sout_access_out_t *, block_t * ) );
VLC_EXPORT( ssize_t, sout_AccessOutWrite, ( sout_access_out_t *, block_t * ) );
VLC_EXPORT( int, sout_AccessOutControl, ( sout_access_out_t *, int, ... ) );
static inline bool sout_AccessOutCanControlPace( sout_access_out_t *p_ao )
{
bool b;
if( sout_AccessOutControl( p_ao, ACCESS_OUT_CONTROLS_PACE, &b ) )
return true;
return b;
}
/** Muxer structure */
struct sout_mux_t
{
VLC_COMMON_MEMBERS
module_t *p_module;
sout_instance_t *p_sout;
char *psz_mux;
config_chain_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 */
bool b_add_stream_any_time;
bool 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= bool *, res=cannot fail */
/* properties */
MUX_GET_ADD_STREAM_WAIT, /* arg1= bool *, 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;
config_chain_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 );
}
/****************************************************************************
* Encoder
****************************************************************************/
VLC_EXPORT( encoder_t *, sout_EncoderCreate, ( vlc_object_t *obj ) );
#define sout_EncoderCreate(o) sout_EncoderCreate(VLC_OBJECT(o))
/****************************************************************************
* Announce handler
****************************************************************************/
VLC_EXPORT(session_descriptor_t*,sout_AnnounceRegisterSDP, ( vlc_object_t *, const char *, const char *, announce_method_t* ) );
VLC_EXPORT( int, sout_AnnounceUnRegister, (vlc_object_t *,session_descriptor_t* ) );
#define sout_AnnounceRegisterSDP(o, sdp, addr, m) \
sout_AnnounceRegisterSDP(VLC_OBJECT (o), sdp, addr, m)
#define sout_AnnounceUnRegister(o, a) \
sout_AnnounceUnRegister(VLC_OBJECT (o), a)
VLC_EXPORT(announce_method_t*, sout_SAPMethod, (void) );
VLC_EXPORT(void, sout_MethodRelease, (announce_method_t *) );
/** SDP */
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 ) );
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) );
VLC_EXPORT( char *, sdp_AddAttribute, (char **sdp, const char *name, const char *fmt, ...) LIBVLC_FORMAT( 3, 4 ) );
#ifdef __cplusplus
}
#endif
#endif
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