include/vlc_es_out.h

   1 /*****************************************************************************
   2  * vlc_es_out.h: es_out (demuxer output) descriptor, queries and methods
   3  *****************************************************************************
   4  * Copyright (C) 1999-2004 the VideoLAN team
   5  * $Id$
   6  *
   7  * Authors: Laurent Aimar <fenrir@via.ecp.fr>
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License as published by
  11  * the Free Software Foundation; either version 2 of the License, or
  12  * (at your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  * GNU General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this program; if not, write to the Free Software
  21  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  22  *****************************************************************************/
  23
  24 #ifndef VLC_ES_OUT_H
  25 #define VLC_ES_OUT_H 1
  26
  27 /**
  28  * \file
  29  * This file defines functions and structures for handling es_out in stream output
  30  */
  31
  32 /**
  33  * \defgroup es out Es Out
  34  * @{
  35  */
  36
  37 enum es_out_mode_e
  38 {
  39     ES_OUT_MODE_NONE,   /* don't select anything */
  40     ES_OUT_MODE_ALL,    /* eg for stream output */
  41     ES_OUT_MODE_AUTO,   /* best audio/video or for input follow audio-track, sub-track */
  42     ES_OUT_MODE_PARTIAL /* select programs given after --programs */
  43 };
  44
  45 enum es_out_query_e
  46 {
  47     /* set ES selected for the es category (audio/video/spu) */
  48     ES_OUT_SET_ES,      /* arg1= es_out_id_t*                   */
  49     ES_OUT_RESTART_ES,  /* arg1= es_out_id_t*                   */
  50
  51     /* set 'default' tag on ES (copied across from container) */
  52     ES_OUT_SET_ES_DEFAULT, /* arg1= es_out_id_t*                */
  53
  54     /* force selection/unselection of the ES (bypass current mode) */
  55     ES_OUT_SET_ES_STATE,/* arg1= es_out_id_t* arg2=bool   */
  56     ES_OUT_GET_ES_STATE,/* arg1= es_out_id_t* arg2=bool*  */
  57
  58     /* */
  59     ES_OUT_SET_GROUP,   /* arg1= int                            */
  60
  61     /* PCR handling, DTS/PTS will be automatically computed using thoses PCR
  62      * XXX: SET_PCR(_GROUP) are in charge of the pace control. They will wait
  63      * to slow down the demuxer so that it reads at the right speed.
  64      * XXX: if you want PREROLL just call ES_OUT_SET_NEXT_DISPLAY_TIME and send
  65      * as you would normally do.
  66      */
  67     ES_OUT_SET_PCR,             /* arg1=int64_t i_pcr(microsecond!) (using default group 0)*/
  68     ES_OUT_SET_GROUP_PCR,       /* arg1= int i_group, arg2=int64_t i_pcr(microsecond!)*/
  69     ES_OUT_RESET_PCR,           /* no arg */
  70
  71     /* Timestamp handling, convert an input timestamp to a global clock one.
  72      * (shouldn't have to be used by input plugins directly) */
  73     ES_OUT_GET_TS,             /* arg1=int64_t i_ts(microsecond!) (using default group 0), arg2=int64_t* converted i_ts */
  74
  75     /* Try not to use this one as it is a bit hacky */
  76     ES_OUT_SET_ES_FMT,         /* arg1= es_out_id_t* arg2=es_format_t* */
  77
  78     /* Allow preroll of data (data with dts/pts < i_pts for all ES will be decoded but not displayed */
  79     ES_OUT_SET_NEXT_DISPLAY_TIME,   /* arg1=int64_t i_pts(microsecond) */
  80     /* Set meta data for group (dynamic) */
  81     ES_OUT_SET_GROUP_META,  /* arg1=int i_group arg2=vlc_meta_t */
  82     /* Set epg for group (dynamic) */
  83     ES_OUT_SET_GROUP_EPG,   /* arg1=int i_group arg2=vlc_epg_t */
  84     /* */
  85     ES_OUT_DEL_GROUP,       /* arg1=int i_group */
  86
  87     /* First value usable for private control */
  88     ES_OUT_PRIVATE_START = 0x10000,
  89 };
  90
  91 struct es_out_t
  92 {
  93     es_out_id_t *(*pf_add)    ( es_out_t *, const es_format_t * );
  94     int          (*pf_send)   ( es_out_t *, es_out_id_t *, block_t * );
  95     void         (*pf_del)    ( es_out_t *, es_out_id_t * );
  96     int          (*pf_control)( es_out_t *, int i_query, va_list );
  97     void         (*pf_destroy)( es_out_t * );
  98
  99     bool         b_sout;
 100
 101     es_out_sys_t    *p_sys;
 102 };
 103
 104 LIBVLC_USED
 105 static inline es_out_id_t * es_out_Add( es_out_t *out, const es_format_t *fmt )
 106 {
 107     return out->pf_add( out, fmt );
 108 }
 109
 110 static inline void es_out_Del( es_out_t *out, es_out_id_t *id )
 111 {
 112     out->pf_del( out, id );
 113 }
 114
 115 static inline int es_out_Send( es_out_t *out, es_out_id_t *id,
 116                                block_t *p_block )
 117 {
 118     return out->pf_send( out, id, p_block );
 119 }
 120
 121 static inline int es_out_vaControl( es_out_t *out, int i_query, va_list args )
 122 {
 123     return out->pf_control( out, i_query, args );
 124 }
 125
 126 static inline int es_out_Control( es_out_t *out, int i_query, ... )
 127 {
 128     va_list args;
 129     int     i_result;
 130
 131     va_start( args, i_query );
 132     i_result = es_out_vaControl( out, i_query, args );
 133     va_end( args );
 134     return i_result;
 135 }
 136
 137 static inline void es_out_Delete( es_out_t *p_out )
 138 {
 139     p_out->pf_destroy( p_out );
 140 }
 141
 142 /**
 143  * @}
 144  */
 145
 146 #endif