/usr/include/vlc/plugins/vlc_demux.h is in libvlccore-dev 2.2.2-5.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 | /*****************************************************************************
* vlc_demux.h: Demuxer descriptor, queries and methods
*****************************************************************************
* Copyright (C) 1999-2005 VLC authors and VideoLAN
* $Id: 0dcee0dffe2ac9dafdc9fe8fd5fa363a64cb85e1 $
*
* Authors: Laurent Aimar <fenrir@via.ecp.fr>
*
* 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_DEMUX_H
#define VLC_DEMUX_H 1
/**
* \file
* This files defines functions and structures used by demux objects in vlc
*/
#include <vlc_es.h>
#include <vlc_stream.h>
#include <vlc_es_out.h>
/**
* \defgroup demux Demux
* @{
*/
struct demux_t
{
VLC_COMMON_MEMBERS
/* Module properties */
module_t *p_module;
/* eg informative but needed (we can have access+demux) */
char *psz_access;
char *psz_demux;
char *psz_location;
char *psz_file;
/* input stream */
stream_t *s; /* NULL in case of a access+demux in one */
/* es output */
es_out_t *out; /* our p_es_out */
/* set by demuxer */
int (*pf_demux) ( demux_t * ); /* demux one frame only */
int (*pf_control)( demux_t *, int i_query, va_list args);
/* Demux has to maintain them uptodate
* when it is responsible of seekpoint/title */
struct
{
unsigned int i_update; /* Demux sets them on change,
Input removes them once take into account*/
/* Seekpoint/Title at demux level */
int i_title; /* idem, start from 0 (could be menu) */
int i_seekpoint; /* idem, start from 0 */
} info;
demux_sys_t *p_sys;
/* Weak link to parent input */
input_thread_t *p_input;
};
/* demux_t.info.i_update field */
#define INPUT_UPDATE_TITLE 0x0010
#define INPUT_UPDATE_SEEKPOINT 0x0020
#define INPUT_UPDATE_META 0x0040
#define INPUT_UPDATE_TITLE_LIST 0x0100
/* demux_meta_t is returned by "meta reader" module to the demuxer */
typedef struct demux_meta_t
{
VLC_COMMON_MEMBERS
demux_t *p_demux; /** FIXME: use stream_t instead? */
input_item_t *p_item; /***< the input item that is being read */
vlc_meta_t *p_meta; /**< meta data */
int i_attachments; /**< number of attachments */
input_attachment_t **attachments; /**< array of attachments */
} demux_meta_t;
enum demux_query_e
{
/* I. Common queries to access_demux and demux */
/* POSITION double between 0.0 and 1.0 */
DEMUX_GET_POSITION, /* arg1= double * res= */
DEMUX_SET_POSITION, /* arg1= double arg2= bool b_precise res=can fail */
/* LENGTH/TIME in microsecond, 0 if unknown */
DEMUX_GET_LENGTH, /* arg1= int64_t * res= */
DEMUX_GET_TIME, /* arg1= int64_t * res= */
DEMUX_SET_TIME, /* arg1= int64_t arg2= bool b_precise res=can fail */
/* TITLE_INFO only if more than 1 title or 1 chapter */
DEMUX_GET_TITLE_INFO, /* arg1=input_title_t*** arg2=int*
arg3=int*pi_title_offset(0), arg4=int*pi_seekpoint_offset(0) can fail */
/* TITLE/SEEKPOINT, only when TITLE_INFO succeed */
DEMUX_SET_TITLE, /* arg1= int can fail */
DEMUX_SET_SEEKPOINT, /* arg1= int can fail */
/* DEMUX_SET_GROUP/SET_ES only a hint for demuxer (mainly DVB) to allow not
* reading everything (you should not use this to call es_out_Control)
* if you don't know what to do with it, just IGNORE it, it is safe(r)
* -1 means all group, 0 default group (first es added) */
DEMUX_SET_GROUP, /* arg1= int, arg2=const vlc_list_t * can fail */
DEMUX_SET_ES, /* arg1= int can fail */
/* Ask the demux to demux until the given date at the next pf_demux call
* but not more (and not less, at the precision available of course).
* XXX: not mandatory (except for subtitle demux) but will help a lot
* for multi-input
*/
DEMUX_SET_NEXT_DEMUX_TIME, /* arg1= int64_t can fail */
/* FPS for correct subtitles handling */
DEMUX_GET_FPS, /* arg1= double * res=can fail */
/* Meta data */
DEMUX_GET_META, /* arg1= vlc_meta_t ** res=can fail */
DEMUX_HAS_UNSUPPORTED_META, /* arg1= bool * res can fail */
/* Attachments */
DEMUX_GET_ATTACHMENTS, /* arg1=input_attachment_t***, int* res=can fail */
/* RECORD you are ensured that it is never called twice with the same state
* you should accept it only if the stream can be recorded without
* any modification or header addition. */
DEMUX_CAN_RECORD, /* arg1=bool* res=can fail(assume false) */
DEMUX_SET_RECORD_STATE, /* arg1=bool res=can fail */
DEMUX_GET_SIGNAL, /* arg1=double *pf_quality, arg2=double *pf_strength
res=can fail */
/* II. Specific access_demux queries */
/* PAUSE you are ensured that it is never called twice with the same state */
DEMUX_CAN_PAUSE = 0x1000, /* arg1= bool* can fail (assume false)*/
DEMUX_SET_PAUSE_STATE, /* arg1= bool can fail */
DEMUX_GET_PTS_DELAY, /* arg1= int64_t* cannot fail */
/* DEMUX_CAN_CONTROL_PACE returns true (*pb_pace) if we can read the
* data at our pace */
DEMUX_CAN_CONTROL_PACE, /* arg1= bool*pb_pace can fail (assume false) */
/* DEMUX_CAN_CONTROL_RATE is called only if DEMUX_CAN_CONTROL_PACE has returned false.
* *pb_rate should be true when the rate can be changed (using DEMUX_SET_RATE)
* *pb_ts_rescale should be true when the timestamps (pts/dts/pcr) have to be rescaled */
DEMUX_CAN_CONTROL_RATE, /* arg1= bool*pb_rate arg2= bool*pb_ts_rescale can fail(assume false) */
/* DEMUX_SET_RATE is called only if DEMUX_CAN_CONTROL_RATE has returned true.
* It should return the value really used in *pi_rate */
DEMUX_SET_RATE, /* arg1= int*pi_rate can fail */
DEMUX_CAN_SEEK, /* arg1= bool* can fail (assume false)*/
/* Navigation */
DEMUX_NAV_ACTIVATE, /* res=can fail */
DEMUX_NAV_UP, /* res=can fail */
DEMUX_NAV_DOWN, /* res=can fail */
DEMUX_NAV_LEFT, /* res=can fail */
DEMUX_NAV_RIGHT, /* res=can fail */
};
VLC_API int demux_vaControlHelper( stream_t *, int64_t i_start, int64_t i_end, int64_t i_bitrate, int i_align, int i_query, va_list args );
static inline void demux_UpdateTitleFromStream( demux_t *demux )
{
stream_t *s = demux->s;
unsigned title, seekpoint;
if( stream_Control( s, STREAM_GET_TITLE, &title ) == VLC_SUCCESS
&& title != (unsigned)demux->info.i_title )
{
demux->info.i_title = title;
demux->info.i_update |= INPUT_UPDATE_TITLE;
}
if( stream_Control( s, STREAM_GET_SEEKPOINT, &seekpoint ) == VLC_SUCCESS
&& seekpoint != (unsigned)demux->info.i_seekpoint )
{
demux->info.i_seekpoint = seekpoint;
demux->info.i_update |= INPUT_UPDATE_SEEKPOINT;
}
}
/*************************************************************************
* Miscellaneous helpers for demuxers
*************************************************************************/
VLC_USED
static inline bool demux_IsPathExtension( demux_t *p_demux, const char *psz_extension )
{
const char *name = (p_demux->psz_file != NULL) ? p_demux->psz_file
: p_demux->psz_location;
const char *psz_ext = strrchr ( name, '.' );
if( !psz_ext || strcasecmp( psz_ext, psz_extension ) )
return false;
return true;
}
VLC_USED
static inline bool demux_IsForced( demux_t *p_demux, const char *psz_name )
{
if( !p_demux->psz_demux || strcmp( p_demux->psz_demux, psz_name ) )
return false;
return true;
}
/**
* This function will create a packetizer suitable for a demuxer that parses
* elementary stream.
*
* The provided es_format_t will be cleaned on error or by
* demux_PacketizerDestroy.
*/
VLC_API decoder_t * demux_PacketizerNew( demux_t *p_demux, es_format_t *p_fmt, const char *psz_msg ) VLC_USED;
/**
* This function will destroy a packetizer create by demux_PacketizerNew.
*/
VLC_API void demux_PacketizerDestroy( decoder_t *p_packetizer );
/**
* This function will return the parent input of this demux.
* It is retained. Can return NULL.
*/
VLC_API input_thread_t * demux_GetParentInput( demux_t *p_demux ) VLC_USED;
/* */
#define DEMUX_INIT_COMMON() do { \
p_demux->pf_control = Control; \
p_demux->pf_demux = Demux; \
p_demux->p_sys = calloc( 1, sizeof( demux_sys_t ) ); \
if( !p_demux->p_sys ) return VLC_ENOMEM;\
} while(0)
/**
* @}
*/
#endif
|