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vlc_es_out.h
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/*****************************************************************************
* vlc_es_out.h: es_out (demuxer output) descriptor, queries and methods
*****************************************************************************
* Copyright (C) 1999-2004 VLC authors and VideoLAN
* $Id$
*
* Authors: Laurent Aimar <[email protected]>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation; either version 2.1 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser 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_ES_OUT_H
#define VLC_ES_OUT_H 1
/**
* \file
* This file defines functions and structures for handling es_out in stream output
*/
/**
* \defgroup es out Es Out
* @{
*/
enum es_out_query_e
{
/* set ES selected for the es category (audio/video/spu) */
ES_OUT_SET_ES, /* arg1= es_out_id_t* */
ES_OUT_RESTART_ES, /* arg1= es_out_id_t* */
/* set 'default' tag on ES (copied across from container) */
ES_OUT_SET_ES_DEFAULT, /* arg1= es_out_id_t* */
/* force selection/unselection of the ES (bypass current mode) */
ES_OUT_SET_ES_STATE,/* arg1= es_out_id_t* arg2=bool */
ES_OUT_GET_ES_STATE,/* arg1= es_out_id_t* arg2=bool* */
/* */
ES_OUT_SET_GROUP, /* arg1= int */
/* PCR handling, DTS/PTS will be automatically computed using thoses PCR
* XXX: SET_PCR(_GROUP) are in charge of the pace control. They will wait
* to slow down the demuxer so that it reads at the right speed.
* XXX: if you want PREROLL just call ES_OUT_SET_NEXT_DISPLAY_TIME and send
* as you would normally do.
*/
ES_OUT_SET_PCR, /* arg1=int64_t i_pcr(microsecond!) (using default group 0)*/
ES_OUT_SET_GROUP_PCR, /* arg1= int i_group, arg2=int64_t i_pcr(microsecond!)*/
ES_OUT_RESET_PCR, /* no arg */
/* Try not to use this one as it is a bit hacky */
ES_OUT_SET_ES_FMT, /* arg1= es_out_id_t* arg2=es_format_t* */
/* Allow preroll of data (data with dts/pts < i_pts for all ES will be decoded but not displayed */
ES_OUT_SET_NEXT_DISPLAY_TIME, /* arg1=int64_t i_pts(microsecond) */
/* Set meta data for group (dynamic) (The vlc_meta_t is not modified nor released) */
ES_OUT_SET_GROUP_META, /* arg1=int i_group arg2=const vlc_meta_t */
/* Set epg for group (dynamic) (The vlc_epg_t is not modified nor released) */
ES_OUT_SET_GROUP_EPG, /* arg1=int i_group arg2=const vlc_epg_t */
/* */
ES_OUT_DEL_GROUP, /* arg1=int i_group */
/* Set scrambled state for one es */
ES_OUT_SET_ES_SCRAMBLED_STATE, /* arg1=int i_group arg2=es_out_id_t* */
/* Stop any buffering being done, and ask if es_out has no more data to
* play.
* It will not block and so MUST be used carrefully. The only good reason
* is for interactive playback (like for DVD menu).
* XXX You SHALL call ES_OUT_RESET_PCR before any other es_out_Control/Send calls. */
ES_OUT_GET_EMPTY, /* arg1=bool* res=cannot fail */
/* Set global meta data (The vlc_meta_t is not modified nor released) */
ES_OUT_SET_META, /* arg1=const vlc_meta_t * */
/* PCR system clock manipulation for external clock synchronization */
ES_OUT_GET_PCR_SYSTEM, /* arg1=mtime_t *, arg2=mtime_t * res=can fail */
ES_OUT_MODIFY_PCR_SYSTEM, /* arg1=int is_absolute, arg2=mtime_t, res=can fail */
/* First value usable for private control */
ES_OUT_PRIVATE_START = 0x10000,
};
struct es_out_t
{
es_out_id_t *(*pf_add) ( es_out_t *, const es_format_t * );
int (*pf_send) ( es_out_t *, es_out_id_t *, block_t * );
void (*pf_del) ( es_out_t *, es_out_id_t * );
int (*pf_control)( es_out_t *, int i_query, va_list );
void (*pf_destroy)( es_out_t * );
es_out_sys_t *p_sys;
};
VLC_USED
static inline es_out_id_t * es_out_Add( es_out_t *out, const es_format_t *fmt )
{
return out->pf_add( out, fmt );
}
static inline void es_out_Del( es_out_t *out, es_out_id_t *id )
{
out->pf_del( out, id );
}
static inline int es_out_Send( es_out_t *out, es_out_id_t *id,
block_t *p_block )
{
return out->pf_send( out, id, p_block );
}
static inline int es_out_vaControl( es_out_t *out, int i_query, va_list args )
{
return out->pf_control( out, i_query, args );
}
static inline int es_out_Control( es_out_t *out, int i_query, ... )
{
va_list args;
int i_result;
va_start( args, i_query );
i_result = es_out_vaControl( out, i_query, args );
va_end( args );
return i_result;
}
static inline void es_out_Delete( es_out_t *p_out )
{
p_out->pf_destroy( p_out );
}
static inline int es_out_ControlSetMeta( es_out_t *out, const vlc_meta_t *p_meta )
{
return es_out_Control( out, ES_OUT_SET_META, p_meta );
}
static inline int es_out_ControlGetPcrSystem( es_out_t *out, mtime_t *pi_system, mtime_t *pi_delay )
{
return es_out_Control( out, ES_OUT_GET_PCR_SYSTEM, pi_system, pi_delay );
}
static inline int es_out_ControlModifyPcrSystem( es_out_t *out, bool b_absolute, mtime_t i_system )
{
return es_out_Control( out, ES_OUT_MODIFY_PCR_SYSTEM, b_absolute, i_system );
}
/**
* @}
*/
#endif