mirror of
https://code.videolan.org/videolan/vlc
synced 2024-07-17 05:01:41 +02:00
b2e1b231bc
synchronized ; and menus have less chances to be changed when they're opened. -added basic angle support ; this is a first try. It works with my 2 test-DVDs, but I'd like that people having DVDs with repeated scenes to test it. We can choose angle with command line option -u (don't ask me why :) -a cosmetic change in css decryption. Since config.h.in has changed, you have to re-run ./configure.
358 lines
16 KiB
C
358 lines
16 KiB
C
/*****************************************************************************
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* input_ext-intf.h: structures of the input exported to the interface
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* This header provides structures to read the stream descriptors and
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* control the pace of reading.
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*****************************************************************************
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* Copyright (C) 1999, 2000 VideoLAN
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* $Id: input_ext-intf.h,v 1.34 2001/04/20 05:40:03 stef Exp $
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*
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* Authors: Christophe Massiot <massiot@via.ecp.fr>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
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*****************************************************************************/
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/*
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* Communication input -> interface
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*/
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#define INPUT_MAX_PLUGINS 1
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/* FIXME ! */
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#define REQUESTED_MPEG 1
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#define REQUESTED_AC3 2
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#define REQUESTED_LPCM 3
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#define REQUESTED_NOAUDIO 255
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#define OFFSETTOTIME_MAX_SIZE 10
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/*****************************************************************************
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* es_descriptor_t: elementary stream descriptor
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*****************************************************************************
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* Describes an elementary stream, and includes fields required to handle and
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* demultiplex this elementary stream.
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*****************************************************************************/
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struct decoder_fifo_s; /* defined in input_ext-dec.h */
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struct pgrm_descriptor_s;
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typedef struct es_descriptor_s
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{
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u16 i_id; /* stream ID for PS, PID for TS */
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u8 i_stream_id; /* stream ID defined in the PES */
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u8 i_type; /* stream type */
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boolean_t b_audio; /* is the stream an audio stream that
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* will need to be discarded with
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* fast forward and slow motion ? */
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u8 i_cat; /* stream category: video, audio,
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* spu, other */
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char psz_desc[20]; /* description of ES: audio language
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* for instance ; NULL if not
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* available */
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/* Demultiplexer information */
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void * p_demux_data;
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struct pgrm_descriptor_s *
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p_pgrm; /* very convenient in the demultiplexer */
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/* PES parser information */
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struct pes_packet_s * p_pes; /* Current PES */
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struct data_packet_s * p_last; /* The last packet gathered at present */
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int i_pes_real_size; /* as indicated by the header */
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/* Decoder information */
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struct decoder_fifo_s * p_decoder_fifo;
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vlc_thread_t thread_id; /* ID of the decoder */
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#ifdef STATS
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count_t c_payload_bytes;/* total of payload useful bytes */
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count_t c_packets; /* total packets read */
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count_t c_invalid_packets; /* invalid packets read */
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#endif
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} es_descriptor_t;
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/* Special PID values - note that the PID is only on 13 bits, and that values
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* greater than 0x1fff have no meaning in a stream */
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#define PROGRAM_ASSOCIATION_TABLE_PID 0x0000
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#define CONDITIONNAL_ACCESS_TABLE_PID 0x0001 /* not used */
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#define EMPTY_ID 0xffff /* empty record in a table */
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/* ES streams types - see ISO/IEC 13818-1 table 2-29 numbers */
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#define MPEG1_VIDEO_ES 0x01
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#define MPEG2_VIDEO_ES 0x02
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#define MPEG1_AUDIO_ES 0x03
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#define MPEG2_AUDIO_ES 0x04
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#define AC3_AUDIO_ES 0x81
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/* These ones might violate the norm : */
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#define DVD_SPU_ES 0x82
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#define LPCM_AUDIO_ES 0x83
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#define UNKNOWN_ES 0xFF
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/* ES Categories to be used by interface plugins */
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#define VIDEO_ES 0x00
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#define AUDIO_ES 0x01
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#define SPU_ES 0x02
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#define NAV_ES 0x03
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#define UNKNOWN_ES 0xFF
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/*****************************************************************************
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* pgrm_descriptor_t
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*****************************************************************************
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* Describes a program and list associated elementary streams. It is build by
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* the PSI decoder upon the informations carried in program map sections
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*****************************************************************************/
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typedef struct pgrm_descriptor_s
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{
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/* Program characteristics */
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u16 i_number; /* program number */
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u8 i_version; /* version number */
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boolean_t b_is_ok; /* Is the description up to date ? */
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/* Service Descriptor (program name) - DVB extension */
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u8 i_srv_type;
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char * psz_srv_name;
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/* Synchronization information */
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mtime_t delta_cr;
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mtime_t cr_ref, sysdate_ref;
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mtime_t last_cr; /* reference to detect unexpected stream
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* discontinuities */
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count_t c_average_count;
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/* counter used to compute dynamic average values */
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int i_synchro_state;
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/* Demultiplexer data */
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void * p_demux_data;
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/* Decoders control */
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struct vout_thread_s * p_vout;
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struct aout_thread_s * p_aout;
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int i_es_number; /* size of the following array */
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es_descriptor_t ** pp_es; /* array of pointers to ES */
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} pgrm_descriptor_t;
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/* Synchro states */
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#define SYNCHRO_OK 0
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#define SYNCHRO_START 1
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#define SYNCHRO_REINIT 2
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/*****************************************************************************
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* input_area_t
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*****************************************************************************
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* Attributes for current area (title for DVD)
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*****************************************************************************/
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typedef struct input_area_s
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{
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/* selected area attributes */
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int i_id; /* identificator for area */
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off_t i_start; /* start offset of area */
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off_t i_size; /* total size of the area
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* (in arbitrary units) */
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/* navigation parameters */
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off_t i_tell; /* actual location in the area
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* (in arbitrary units) */
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off_t i_seek; /* next requested location
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* (changed by the interface thread */
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/* area subdivision */
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int i_part_nb; /* number of parts (chapter for DVD)*/
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int i_part; /* currently selected part */
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int i_angle_nb; /* number of angles/title units */
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int i_angle;
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/* offset to plugin related data */
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off_t i_plugin_data;
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} input_area_t;
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/*****************************************************************************
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* stream_descriptor_t
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*****************************************************************************
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* Describes a stream and list its associated programs. Build upon
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* the information carried in program association sections (for instance)
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*****************************************************************************/
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typedef struct stream_descriptor_s
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{
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u16 i_stream_id; /* stream id */
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boolean_t b_changed; /* if stream has been changed,
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we have to inform the interface */
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vlc_mutex_t stream_lock; /* to be taken every time you read
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* or modify stream, pgrm or es */
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/* Input method data */
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int i_method; /* input method for stream: file,
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disc or network */
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boolean_t b_pace_control; /* can we read when we want ? */
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boolean_t b_seekable; /* can we do lseek() ? */
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/* if (b_seekable) : */
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int i_area_nb;
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input_area_t ** pp_areas; /* list of areas in stream == offset
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* interval with own properties */
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input_area_t * p_selected_area;
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u32 i_mux_rate; /* the rate we read the stream (in
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* units of 50 bytes/s) ; 0 if undef */
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/* New status and rate requested by the interface */
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int i_new_status, i_new_rate;
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vlc_cond_t stream_wait; /* interface -> input in case of a
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* status change request */
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/* Demultiplexer data */
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void * p_demux_data;
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/* Programs descriptions */
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int i_pgrm_number; /* size of the following array */
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pgrm_descriptor_t ** pp_programs; /* array of pointers to pgrm */
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/* ES descriptions */
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int i_es_number;
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es_descriptor_t ** pp_es; /* carried elementary streams */
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int i_selected_es_number;
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es_descriptor_t ** pp_selected_es; /* ES with a decoder */
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/* Stream control */
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stream_ctrl_t control;
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} stream_descriptor_t;
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/*****************************************************************************
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* i_p_config_t
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*****************************************************************************
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* This structure gives plugins pointers to the useful functions of input
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*****************************************************************************/
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struct input_thread_s;
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struct data_packet_s;
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struct es_descriptor_s;
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typedef struct i_p_config_s
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{
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int (* pf_peek_stream)( struct input_thread_s *,
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byte_t * buffer, size_t );
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void (* pf_demux_pes)( struct input_thread_s *,
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struct data_packet_s *,
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struct es_descriptor_s *,
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boolean_t b_unit_start,
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boolean_t b_packet_lost );
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} i_p_config_t;
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/*****************************************************************************
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* input_thread_t
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*****************************************************************************
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* This structure includes all the local static variables of an input thread
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*****************************************************************************/
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struct aout_thread_s;
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struct vout_thread_s;
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typedef struct input_thread_s
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{
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/* Thread properties and locks */
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boolean_t b_die; /* 'die' flag */
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boolean_t b_error;
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boolean_t b_eof;
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vlc_thread_t thread_id; /* id for thread functions */
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int * pi_status; /* temporary status flag */
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/* Input module */
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struct module_s * p_input_module;
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/* Init/End */
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void (* pf_init)( struct input_thread_s * );
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void (* pf_open)( struct input_thread_s * );
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void (* pf_close)( struct input_thread_s * );
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void (* pf_end)( struct input_thread_s * );
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/* Read & Demultiplex */
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int (* pf_read)( struct input_thread_s *,
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struct data_packet_s * pp_packets[] );
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void (* pf_demux)( struct input_thread_s *,
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struct data_packet_s * );
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/* Packet management facilities */
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struct data_packet_s *(*pf_new_packet)( void *, size_t );
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struct pes_packet_s *(* pf_new_pes)( void * );
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void (* pf_delete_packet)( void *,
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struct data_packet_s * );
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void (* pf_delete_pes)( void *, struct pes_packet_s * );
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/* Stream control capabilities */
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int (* pf_set_area)( struct input_thread_s *,
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struct input_area_s * );
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int (* pf_rewind)( struct input_thread_s * );
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/* NULL if we don't support going *
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* backwards (it's gonna be fun) */
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void (* pf_seek)( struct input_thread_s *, off_t );
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i_p_config_t i_p_config; /* plugin configuration */
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char * p_source;
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int i_handle; /* socket or file descriptor */
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int i_read_once; /* number of packet read by
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* pf_read once */
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void * p_method_data; /* data of the packet manager */
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void * p_plugin_data; /* data of the plugin */
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/* General stream description */
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stream_descriptor_t stream; /* PAT tables */
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/* For auto-launch of decoders */
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struct aout_thread_s * p_default_aout;
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struct vout_thread_s * p_default_vout;
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#ifdef STATS
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count_t c_loops;
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count_t c_bytes; /* bytes read */
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count_t c_payload_bytes; /* payload useful bytes */
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count_t c_packets_read; /* packets read */
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count_t c_packets_trashed; /* trashed packets */
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#endif
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} input_thread_t;
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/* Input methods */
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/* The first figure is a general method that can be used in interface plugins ;
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* The second figure is a detailed sub-method */
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#define INPUT_METHOD_NONE 0x0 /* input thread is inactive */
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#define INPUT_METHOD_FILE 0x10 /* stream is read from file p_source */
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#define INPUT_METHOD_DISC 0x20 /* stream is read directly from disc */
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#define INPUT_METHOD_DVD 0x21 /* stream is read from DVD */
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#define INPUT_METHOD_VCD 0x22 /* stream is read from VCD */
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#define INPUT_METHOD_NETWORK 0x30 /* stream is read from network */
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#define INPUT_METHOD_UCAST 0x31 /* UDP unicast */
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#define INPUT_METHOD_MCAST 0x32 /* UDP multicast */
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#define INPUT_METHOD_BCAST 0x33 /* UDP broadcast */
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#define INPUT_METHOD_VLAN_BCAST 0x34 /* UDP broadcast with VLANs */
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/* Status changing methods */
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#define INPUT_STATUS_END 0
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#define INPUT_STATUS_PLAY 1
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#define INPUT_STATUS_PAUSE 2
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#define INPUT_STATUS_FASTER 3
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#define INPUT_STATUS_SLOWER 4
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/*****************************************************************************
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* Prototypes
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*****************************************************************************/
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struct input_thread_s * input_CreateThread ( struct playlist_item_s *,
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int *pi_status );
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void input_DestroyThread( struct input_thread_s *, int *pi_status );
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void input_SetStatus( struct input_thread_s *, int );
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void input_SetRate ( struct input_thread_s *, int );
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void input_Seek ( struct input_thread_s *, off_t );
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void input_DumpStream( struct input_thread_s * );
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char * input_OffsetToTime( struct input_thread_s *, char * psz_buffer, off_t );
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int input_ChangeES ( struct input_thread_s *, struct es_descriptor_s *, u8 );
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int input_ToggleES ( struct input_thread_s *,
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struct es_descriptor_s *,
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boolean_t );
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