mirror of
https://code.videolan.org/videolan/vlc
synced 2024-09-04 09:11:33 +02:00
![Sam Hocevar](/assets/img/avatar_default.png)
demux plugins (ps, ts, but also dvd*). * ./src/input/mpeg_system.c: removed MPEG-related stuff from the vlc core. * ./src/misc/modules.c: max recursion level is now 5. * ./modules/access/dvdplay/es.c: fixed a buffer overflow.
367 lines
16 KiB
C
367 lines
16 KiB
C
/*****************************************************************************
|
|
* input_ext-intf.h: structures of the input exported to the interface
|
|
* This header provides structures to read the stream descriptors and
|
|
* control the pace of reading.
|
|
*****************************************************************************
|
|
* Copyright (C) 1999, 2000 VideoLAN
|
|
* $Id: input_ext-intf.h,v 1.75 2002/08/07 00:29:36 sam Exp $
|
|
*
|
|
* Authors: Christophe Massiot <massiot@via.ecp.fr>
|
|
*
|
|
* 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.
|
|
*****************************************************************************/
|
|
|
|
#ifndef _VLC_INPUT_EXT_INTF_H
|
|
#define _VLC_INPUT_EXT_INTF_H 1
|
|
|
|
/*
|
|
* Communication input -> interface
|
|
*/
|
|
/* FIXME ! */
|
|
#define REQUESTED_MPEG 1
|
|
#define REQUESTED_A52 2
|
|
#define REQUESTED_LPCM 3
|
|
#define REQUESTED_NOAUDIO 255
|
|
|
|
#define OFFSETTOTIME_MAX_SIZE 10
|
|
|
|
/*****************************************************************************
|
|
* es_descriptor_t: elementary stream descriptor
|
|
*****************************************************************************
|
|
* Describes an elementary stream, and includes fields required to handle and
|
|
* demultiplex this elementary stream.
|
|
*****************************************************************************/
|
|
struct es_descriptor_t
|
|
{
|
|
u16 i_id; /* stream ID for PS, PID for TS */
|
|
u8 i_stream_id; /* stream ID defined in the PES */
|
|
vlc_fourcc_t i_fourcc; /* stream type */
|
|
u8 i_cat; /* stream category (audio, video, spu) */
|
|
int i_demux_fd; /* used to store demux device
|
|
file handle */
|
|
char psz_desc[20]; /* description of ES: audio language
|
|
* for instance ; NULL if not
|
|
* available */
|
|
|
|
/* Demultiplexer information */
|
|
es_sys_t * p_demux_data;
|
|
pgrm_descriptor_t * p_pgrm; /* very convenient in the demultiplexer */
|
|
|
|
/* PES parser information */
|
|
pes_packet_t * p_pes; /* Current PES */
|
|
int i_pes_real_size; /* as indicated by the header */
|
|
|
|
/* Decoder information */
|
|
decoder_fifo_t * p_decoder_fifo;
|
|
|
|
count_t c_packets; /* total packets read */
|
|
count_t c_invalid_packets; /* invalid packets read */
|
|
};
|
|
|
|
/* Special PID values - note that the PID is only on 13 bits, and that values
|
|
* greater than 0x1fff have no meaning in a stream */
|
|
#define PROGRAM_ASSOCIATION_TABLE_PID 0x0000
|
|
#define CONDITIONNAL_ACCESS_TABLE_PID 0x0001 /* not used */
|
|
#define EMPTY_ID 0xffff /* empty record in a table */
|
|
|
|
|
|
/* ES Categories to be used by interface plugins */
|
|
#define UNKNOWN_ES 0x00
|
|
#define VIDEO_ES 0x01
|
|
#define AUDIO_ES 0x02
|
|
#define SPU_ES 0x03
|
|
#define NAV_ES 0x04
|
|
|
|
/*****************************************************************************
|
|
* pgrm_descriptor_t
|
|
*****************************************************************************
|
|
* Describes a program and list associated elementary streams. It is build by
|
|
* the PSI decoder upon the informations carried in program map sections
|
|
*****************************************************************************/
|
|
struct pgrm_descriptor_t
|
|
{
|
|
/* Program characteristics */
|
|
u16 i_number; /* program number */
|
|
u8 i_version; /* version number */
|
|
vlc_bool_t b_is_ok; /* Is the description up to date ? */
|
|
|
|
/* Service Descriptor (program name) - DVB extension */
|
|
u8 i_srv_type;
|
|
char * psz_srv_name;
|
|
|
|
/* Synchronization information */
|
|
mtime_t delta_cr;
|
|
mtime_t cr_ref, sysdate_ref;
|
|
mtime_t last_cr; /* reference to detect unexpected stream
|
|
* discontinuities */
|
|
mtime_t last_syscr;
|
|
count_t c_average_count;
|
|
/* counter used to compute dynamic average values */
|
|
int i_synchro_state;
|
|
|
|
/* Demultiplexer data */
|
|
pgrm_sys_t * p_demux_data;
|
|
|
|
int i_es_number; /* size of the following array */
|
|
es_descriptor_t ** pp_es; /* array of pointers to ES */
|
|
};
|
|
|
|
/* Synchro states */
|
|
#define SYNCHRO_OK 0
|
|
#define SYNCHRO_START 1
|
|
#define SYNCHRO_REINIT 2
|
|
|
|
/*****************************************************************************
|
|
* input_area_t
|
|
*****************************************************************************
|
|
* Attributes for current area (title for DVD)
|
|
*****************************************************************************/
|
|
struct input_area_t
|
|
{
|
|
/* selected area attributes */
|
|
int i_id; /* identificator for area */
|
|
off_t i_start; /* start offset of area */
|
|
off_t i_size; /* total size of the area
|
|
* (in arbitrary units) */
|
|
|
|
/* navigation parameters */
|
|
off_t i_tell; /* actual location in the area
|
|
* (in arbitrary units) */
|
|
off_t i_seek; /* next requested location
|
|
* (changed by the interface thread */
|
|
|
|
/* area subdivision */
|
|
int i_part_nb; /* number of parts (chapter for DVD)*/
|
|
int i_part; /* currently selected part */
|
|
|
|
|
|
/* offset to plugin related data */
|
|
off_t i_plugin_data;
|
|
};
|
|
|
|
/*****************************************************************************
|
|
* input_info_t
|
|
*****************************************************************************
|
|
* Composes a linked list of name/value pairs intended to inform the
|
|
* user about the current stream
|
|
*****************************************************************************/
|
|
struct input_info_t {
|
|
char * psz_name;
|
|
char * psz_value;
|
|
input_info_t * p_next;
|
|
};
|
|
|
|
/*****************************************************************************
|
|
* input_info_category_t
|
|
*****************************************************************************
|
|
* Composes a linked list of categories in which to place info about
|
|
* the stream.
|
|
*****************************************************************************/
|
|
struct input_info_category_t {
|
|
char * psz_name;
|
|
input_info_t * p_info;
|
|
input_info_category_t * p_next;
|
|
};
|
|
|
|
/*****************************************************************************
|
|
* stream_descriptor_t
|
|
*****************************************************************************
|
|
* Describes a stream and list its associated programs. Build upon
|
|
* the information carried in program association sections (for instance)
|
|
*****************************************************************************/
|
|
struct stream_descriptor_t
|
|
{
|
|
u16 i_stream_id; /* stream id */
|
|
vlc_bool_t b_changed; /* if stream has been changed,
|
|
we have to inform the interface */
|
|
vlc_mutex_t stream_lock; /* to be taken every time you read
|
|
* or modify stream, pgrm or es */
|
|
|
|
/* Input method data */
|
|
int i_method; /* input method for stream: file,
|
|
disc or network */
|
|
vlc_bool_t b_pace_control; /* can we read when we want ? */
|
|
vlc_bool_t b_seekable; /* can we do lseek() ? */
|
|
|
|
/* if (b_seekable) : */
|
|
int i_area_nb;
|
|
input_area_t ** pp_areas; /* list of areas in stream == offset
|
|
* interval with own properties */
|
|
input_area_t * p_selected_area;
|
|
input_area_t * p_new_area; /* Newly selected area from
|
|
* the interface */
|
|
|
|
u32 i_mux_rate; /* the rate we read the stream (in
|
|
* units of 50 bytes/s) ; 0 if undef */
|
|
|
|
/* New status and rate requested by the interface */
|
|
int i_new_status, i_new_rate;
|
|
int b_new_mute; /* int because it can be -1 */
|
|
vlc_cond_t stream_wait; /* interface -> input in case of a
|
|
* status change request */
|
|
|
|
/* Demultiplexer data */
|
|
stream_sys_t * p_demux_data;
|
|
|
|
/* Programs descriptions */
|
|
int i_pgrm_number; /* size of the following array */
|
|
pgrm_descriptor_t ** pp_programs; /* array of pointers to pgrm */
|
|
pgrm_descriptor_t * p_selected_program; /* currently
|
|
selected program */
|
|
pgrm_descriptor_t * p_new_program; /* Newly selected program */
|
|
/* ES descriptions */
|
|
int i_es_number;
|
|
es_descriptor_t ** pp_es; /* carried elementary streams */
|
|
int i_selected_es_number;
|
|
es_descriptor_t ** pp_selected_es; /* ES with a decoder */
|
|
es_descriptor_t * p_newly_selected_es; /* ES selected from
|
|
* the interface */
|
|
es_descriptor_t * p_removed_es; /* ES removed from the interface */
|
|
|
|
/* Stream control */
|
|
stream_ctrl_t control;
|
|
|
|
/* Input info */
|
|
input_info_category_t * p_info;
|
|
|
|
/* Statistics */
|
|
count_t c_packets_read; /* packets read */
|
|
count_t c_packets_trashed; /* trashed packets */
|
|
};
|
|
|
|
/*****************************************************************************
|
|
* stream_position_t
|
|
*****************************************************************************
|
|
* Describes the current position in the stream.
|
|
*****************************************************************************/
|
|
struct stream_position_t
|
|
{
|
|
off_t i_tell; /* actual location in the area (in arbitrary units) */
|
|
off_t i_size; /* total size of the area (in arbitrary units) */
|
|
|
|
u32 i_mux_rate; /* the rate we read the stream (in
|
|
* units of 50 bytes/s) ; 0 if undef */
|
|
};
|
|
|
|
#define MUTE_NO_CHANGE -1
|
|
|
|
/*****************************************************************************
|
|
* input_thread_t
|
|
*****************************************************************************
|
|
* This structure includes all the local static variables of an input thread
|
|
*****************************************************************************/
|
|
struct input_thread_t
|
|
{
|
|
VLC_COMMON_MEMBERS
|
|
|
|
/* Thread properties */
|
|
vlc_bool_t b_eof;
|
|
|
|
/* Access module */
|
|
module_t * p_access;
|
|
ssize_t (* pf_read ) ( input_thread_t *, byte_t *, size_t );
|
|
int (* pf_set_program )( input_thread_t *, pgrm_descriptor_t * );
|
|
int (* pf_set_area )( input_thread_t *, input_area_t * );
|
|
void (* pf_seek ) ( input_thread_t *, off_t );
|
|
access_sys_t * p_access_data;
|
|
size_t i_mtu;
|
|
|
|
/* Demux module */
|
|
module_t * p_demux;
|
|
int (* pf_demux ) ( input_thread_t * );
|
|
int (* pf_rewind ) ( input_thread_t * );
|
|
/* NULL if we don't support going *
|
|
* backwards (it's gonna be fun) */
|
|
demux_sys_t * p_demux_data; /* data of the demux */
|
|
|
|
/* Buffer manager */
|
|
input_buffers_t *p_method_data; /* data of the packet manager */
|
|
data_buffer_t * p_data_buffer;
|
|
byte_t * p_current_data;
|
|
byte_t * p_last_data;
|
|
size_t i_bufsize;
|
|
|
|
/* General stream description */
|
|
stream_descriptor_t stream;
|
|
|
|
/* Playlist item */
|
|
char * psz_source;
|
|
char * psz_access;
|
|
char * psz_demux;
|
|
char * psz_name;
|
|
|
|
count_t c_loops;
|
|
};
|
|
|
|
/* Input methods */
|
|
/* The first figure is a general method that can be used in interface plugins ;
|
|
* The second figure is a detailed sub-method */
|
|
#define INPUT_METHOD_NONE 0x0 /* input thread is inactive */
|
|
#define INPUT_METHOD_FILE 0x10 /* stream is read from file p_source */
|
|
#define INPUT_METHOD_DISC 0x20 /* stream is read directly from disc */
|
|
#define INPUT_METHOD_DVD 0x21 /* stream is read from DVD */
|
|
#define INPUT_METHOD_VCD 0x22 /* stream is read from VCD */
|
|
#define INPUT_METHOD_NETWORK 0x30 /* stream is read from network */
|
|
#define INPUT_METHOD_UCAST 0x31 /* UDP unicast */
|
|
#define INPUT_METHOD_MCAST 0x32 /* UDP multicast */
|
|
#define INPUT_METHOD_BCAST 0x33 /* UDP broadcast */
|
|
#define INPUT_METHOD_VLAN_BCAST 0x34 /* UDP broadcast with VLANs */
|
|
#define INPUT_METHOD_SATELLITE 0x40 /* stream is read from a */
|
|
/* satellite card */
|
|
|
|
/* Status changing methods */
|
|
#define INPUT_STATUS_END 0
|
|
#define INPUT_STATUS_PLAY 1
|
|
#define INPUT_STATUS_PAUSE 2
|
|
#define INPUT_STATUS_FASTER 3
|
|
#define INPUT_STATUS_SLOWER 4
|
|
|
|
/* Seek modes */
|
|
#define INPUT_SEEK_SET 0x00
|
|
#define INPUT_SEEK_CUR 0x01
|
|
#define INPUT_SEEK_END 0x02
|
|
#define INPUT_SEEK_BYTES 0x00
|
|
#define INPUT_SEEK_SECONDS 0x10
|
|
#define INPUT_SEEK_PERCENT 0x20
|
|
|
|
/*****************************************************************************
|
|
* Prototypes
|
|
*****************************************************************************/
|
|
#define input_CreateThread(a,b,c) __input_CreateThread(VLC_OBJECT(a),b,c)
|
|
input_thread_t * __input_CreateThread ( vlc_object_t *,
|
|
playlist_item_t *, int * );
|
|
void input_StopThread ( input_thread_t * );
|
|
void input_DestroyThread ( input_thread_t * );
|
|
|
|
#define input_SetStatus(a,b) __input_SetStatus(VLC_OBJECT(a),b)
|
|
VLC_EXPORT( void, __input_SetStatus, ( vlc_object_t *, int ) );
|
|
|
|
#define input_Seek(a,b,c) __input_Seek(VLC_OBJECT(a),b,c)
|
|
VLC_EXPORT( void, __input_Seek, ( vlc_object_t *, off_t, int ) );
|
|
|
|
#define input_Tell(a,b) __input_Tell(VLC_OBJECT(a),b)
|
|
VLC_EXPORT( void, __input_Tell, ( vlc_object_t *, stream_position_t * ) );
|
|
|
|
VLC_EXPORT( void, input_DumpStream, ( input_thread_t * ) );
|
|
VLC_EXPORT( char *, input_OffsetToTime, ( input_thread_t *, char *, off_t ) );
|
|
VLC_EXPORT( int, input_ToggleES, ( input_thread_t *, es_descriptor_t *, vlc_bool_t ) );
|
|
VLC_EXPORT( int, input_ChangeArea, ( input_thread_t *, input_area_t * ) );
|
|
VLC_EXPORT( int, input_ChangeProgram, ( input_thread_t *, u16 ) );
|
|
|
|
int input_ToggleGrayscale( input_thread_t * );
|
|
int input_ToggleMute ( input_thread_t * );
|
|
|
|
#endif /* "input_ext-intf.h" */
|