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vlc/include/vlc_input.h

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/*****************************************************************************
* vlc_input.h:
*****************************************************************************
* Copyright (C) 1999-2004 VideoLAN
* $Id: input_ext-intf.h 7954 2004-06-07 22:19:12Z fenrir $
*
* Authors: Christophe Massiot <massiot@via.ecp.fr>
* 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 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.
*****************************************************************************/
/* __ is need because conflict with <vlc/input.h> */
#ifndef _VLC__INPUT_H
#define _VLC__INPUT_H 1
/*****************************************************************************
* input_item_t: Describes an input and is used to spawn input_thread_t objects
*****************************************************************************/
struct info_t
{
char *psz_name; /**< Name of this info */
char *psz_value; /**< Value of the info */
};
struct info_category_t
{
char *psz_name; /**< Name of this category */
int i_infos; /**< Number of infos in the category */
struct info_t **pp_infos; /**< Pointer to an array of infos */
};
struct input_item_t
{
char *psz_name; /**< text describing this item */
char *psz_uri; /**< mrl of this item */
int i_options; /**< Number of input options */
char **ppsz_options; /**< Array of input options */
mtime_t i_duration; /**< A hint about the duration of this
* item, in milliseconds*/
int i_categories; /**< Number of info categories */
info_category_t **pp_categories; /**< Pointer to the first info category */
int i_es; /**< Number of es format descriptions */
es_format_t **es; /**< Pointer to an array of es formats */
vlc_mutex_t lock; /**< Item cannot be changed without this lock */
};
static inline void vlc_input_item_Init( vlc_object_t *p_o, input_item_t *p_i )
{
memset( p_i, 0, sizeof(input_item_t) );
p_i->psz_name = 0;
p_i->psz_uri = 0;
p_i->ppsz_options = 0;
p_i->pp_categories = 0;
p_i->es = 0;
vlc_mutex_init( p_o, &p_i->lock );
}
static inline void vlc_input_item_Clean( input_item_t *p_i )
{
if( p_i->psz_name ) free( p_i->psz_name );
if( p_i->psz_uri ) free( p_i->psz_uri );
p_i->psz_name = 0;
p_i->psz_uri = 0;
while( p_i->i_options )
{
p_i->i_options--;
if( p_i->ppsz_options[p_i->i_options] )
free( p_i->ppsz_options[p_i->i_options] );
if( !p_i->i_options ) free( p_i->ppsz_options );
}
while( p_i->i_es )
{
p_i->i_es--;
es_format_Clean( p_i->es[p_i->i_es] );
if( !p_i->i_es ) free( p_i->es );
}
while( p_i->i_categories )
{
info_category_t *p_category =
p_i->pp_categories[--(p_i->i_categories)];
while( p_category->i_infos )
{
p_category->i_infos--;
if( p_category->pp_infos[p_category->i_infos]->psz_name )
free( p_category->pp_infos[p_category->i_infos]->psz_name);
if( p_category->pp_infos[p_category->i_infos]->psz_value )
free( p_category->pp_infos[p_category->i_infos]->psz_value );
free( p_category->pp_infos[p_category->i_infos] );
if( !p_category->i_infos ) free( p_category->pp_infos );
}
if( p_category->psz_name ) free( p_category->psz_name );
free( p_category );
if( !p_i->i_categories ) free( p_i->pp_categories );
}
vlc_mutex_destroy( &p_i->lock );
}
/*****************************************************************************
* Seek point: (generalisation of chapters)
*****************************************************************************/
struct seekpoint_t
{
int64_t i_byte_offset;
int64_t i_time_offset;
char *psz_name;
};
static inline seekpoint_t *vlc_seekpoint_New( void )
{
seekpoint_t *point = (seekpoint_t*)malloc( sizeof( seekpoint_t ) );
point->i_byte_offset =
point->i_time_offset = 0;
point->psz_name = NULL;
return point;
}
static inline void vlc_seekpoint_Delete( seekpoint_t *point )
{
if( !point ) return;
if( point->psz_name ) free( point->psz_name );
free( point );
}
static inline seekpoint_t *vlc_seekpoint_Duplicate( seekpoint_t *src )
{
seekpoint_t *point = vlc_seekpoint_New();
if( src->psz_name ) point->psz_name = strdup( src->psz_name );
point->i_time_offset = src->i_time_offset;
point->i_byte_offset = src->i_byte_offset;
return point;
}
/*****************************************************************************
* Title:
*****************************************************************************/
typedef struct
{
char *psz_name;
vlc_bool_t b_menu; /* Is it a menu or a normal entry */
int64_t i_length; /* Length(microsecond) if known, else 0 */
int64_t i_size; /* Size (bytes) if known, else 0 */
/* Title seekpoint */
int i_seekpoint;
seekpoint_t **seekpoint;
} input_title_t;
static inline input_title_t *vlc_input_title_New( )
{
input_title_t *t = (input_title_t*)malloc( sizeof( input_title_t ) );
t->psz_name = NULL;
t->b_menu = VLC_FALSE;
t->i_length = 0;
t->i_size = 0;
t->i_seekpoint = 0;
t->seekpoint = NULL;
return t;
}
static inline void vlc_input_title_Delete( input_title_t *t )
{
int i;
if( t == NULL )
return;
if( t->psz_name ) free( t->psz_name );
for( i = 0; i < t->i_seekpoint; i++ )
{
if( t->seekpoint[i]->psz_name ) free( t->seekpoint[i]->psz_name );
free( t->seekpoint[i] );
}
if( t->seekpoint ) free( t->seekpoint );
free( t );
}
static inline input_title_t *vlc_input_title_Duplicate( input_title_t *t )
{
input_title_t *dup = vlc_input_title_New( );
int i;
if( t->psz_name ) dup->psz_name = strdup( t->psz_name );
dup->b_menu = t->b_menu;
dup->i_length = t->i_length;
dup->i_size = t->i_size;
dup->i_seekpoint = t->i_seekpoint;
if( t->i_seekpoint > 0 )
{
dup->seekpoint = (seekpoint_t**)calloc( t->i_seekpoint,
sizeof(seekpoint_t*) );
for( i = 0; i < t->i_seekpoint; i++ )
{
dup->seekpoint[i] = vlc_seekpoint_Duplicate( t->seekpoint[i] );
}
}
return dup;
}
/*****************************************************************************
* input defines/constants.
*****************************************************************************/
/* "state" value */
enum input_state_e
{
INIT_S,
PLAYING_S,
PAUSE_S,
END_S,
};
/* "rate" default, min/max */
#define INPUT_RATE_DEFAULT 1000
#define INPUT_RATE_MIN 125 /* Up to 8/1 */
#define INPUT_RATE_MAX 8000 /* Up to 1/8 */
/* input_source_t: gathers all information per input source */
typedef struct
{
/* Input item description */
input_item_t *p_item;
/* Access/Stream/Demux plugins */
access_t *p_access;
stream_t *p_stream;
demux_t *p_demux;
/* Title infos for that input */
vlc_bool_t b_title_demux; /* Titles/Seekpoints provided by demux */
int i_title;
input_title_t **title;
int i_title_offset;
int i_seekpoint_offset;
int i_title_start;
int i_title_end;
int i_seekpoint_start;
int i_seekpoint_end;
/* Properties */
vlc_bool_t b_can_pace_control;
vlc_bool_t b_can_pause;
vlc_bool_t b_eof; /* eof of demuxer */
/* Clock average variation */
int i_cr_average;
} input_source_t;
/* i_update field of access_t/demux_t */
#define INPUT_UPDATE_NONE 0x0000
#define INPUT_UPDATE_SIZE 0x0001
#define INPUT_UPDATE_TITLE 0x0010
#define INPUT_UPDATE_SEEKPOINT 0x0020
#define INPUT_UPDATE_META 0x0040
/* Input control XXX: internal */
#define INPUT_CONTROL_FIFO_SIZE 100
/*****************************************************************************
* input_thread_t
*****************************************************************************
* XXX: this strucrures is *PRIVATE* so nobody can touch it out of src/input.
* I plan to move it to src/input/input_internal.h anyway
*
* XXX: look at src/input/input.c:input_CreateThread for accessible variables
* YOU CANNOT HAVE ACCESS TO THE CONTENT OF input_thread_t except
* p_input->input.p_item (and it's only temporary).
* XXX: move the docs somewhere (better than src/input )
*****************************************************************************/
struct input_thread_t
{
VLC_COMMON_MEMBERS
/* Global properties */
vlc_bool_t b_eof;
vlc_bool_t b_can_pace_control;
vlc_bool_t b_can_pause;
/* Global state */
int i_state;
int i_rate;
/* */
int64_t i_start; /* :start-time,0 by default */
int64_t i_time; /* Current time */
int64_t i_stop; /* :stop-time, 0 if none */
/* Title infos FIXME multi-input (not easy) ? */
int i_title;
input_title_t **title;
int i_title_offset;
int i_seekpoint_offset;
/* User bookmarks FIXME won't be easy with multiples input */
int i_bookmark;
seekpoint_t **bookmark;
/* Output */
es_out_t *p_es_out;
sout_instance_t *p_sout; /* XXX Move it to es_out ? */
vlc_bool_t b_out_pace_control; /* idem ? */
/* Internal caching common for all inputs */
int64_t i_pts_delay;
/* Main input properties */
input_source_t input;
/* Slave demuxers (subs, and others) */
int i_slave;
input_source_t **slave;
/* Buffer of pending actions */
vlc_mutex_t lock_control;
int i_control;
struct
{
/* XXX: val isn't duplicated so it won't works with string */
int i_type;
vlc_value_t val;
} control[INPUT_CONTROL_FIFO_SIZE];
};
/*****************************************************************************
* Prototypes
*****************************************************************************/
#define input_CreateThread(a,b) __input_CreateThread(VLC_OBJECT(a),b)
VLC_EXPORT( input_thread_t *, __input_CreateThread, ( vlc_object_t *, input_item_t * ) );
VLC_EXPORT( void, input_StopThread, ( input_thread_t * ) );
VLC_EXPORT( void, input_DestroyThread, ( input_thread_t * ) );
enum input_query_e
{
/* input variable "position" */
INPUT_GET_POSITION, /* arg1= double * res= */
INPUT_SET_POSITION, /* arg1= double res=can fail */
/* input variable "length" */
INPUT_GET_LENGTH, /* arg1= int64_t * res=can fail */
/* input variable "time" */
INPUT_GET_TIME, /* arg1= int64_t * res= */
INPUT_SET_TIME, /* arg1= int64_t res=can fail */
/* input variable "rate" (1 is DEFAULT_RATE) */
INPUT_GET_RATE, /* arg1= int * res= */
INPUT_SET_RATE, /* arg1= int res=can fail */
/* input variable "state" */
INPUT_GET_STATE, /* arg1= int * res= */
INPUT_SET_STATE, /* arg1= int res=can fail */
/* input variable "audio-delay" and "spu-delay" */
INPUT_GET_AUDIO_DELAY, /* arg1 = int* res=can fail */
INPUT_SET_AUDIO_DELAY, /* arg1 = int res=can fail */
INPUT_GET_SPU_DELAY, /* arg1 = int* res=can fail */
INPUT_SET_SPU_DELAY, /* arg1 = int res=can fail */
/* Meta datas */
INPUT_ADD_INFO, /* arg1= char * arg2= char * arg3=... res=can fail */
INPUT_GET_INFO, /* arg1= char * arg2= char * arg3= char ** res=can fail*/
INPUT_SET_NAME, /* arg1= char * res=can fail */
/* Input config options */
INPUT_ADD_OPTION, /* arg1= char * arg2= char * res=can fail*/
/* Input properties */
INPUT_GET_BYTE_POSITION, /* arg1= int64_t * res= */
INPUT_SET_BYTE_SIZE, /* arg1= int64_t * res= */
/* bookmarks */
INPUT_GET_BOOKMARKS, /* arg1= seekpoint_t *** arg2= int * res=can fail */
INPUT_CLEAR_BOOKMARKS, /* res=can fail */
INPUT_ADD_BOOKMARK, /* arg1= seekpoint_t * res=can fail */
INPUT_CHANGE_BOOKMARK, /* arg1= seekpoint_t * arg2= int * res=can fail */
INPUT_DEL_BOOKMARK, /* arg1= seekpoint_t * res=can fail */
INPUT_SET_BOOKMARK, /* arg1= int res=can fail */
};
VLC_EXPORT( int, input_vaControl,( input_thread_t *, int i_query, va_list ) );
VLC_EXPORT( int, input_Control, ( input_thread_t *, int i_query, ... ) );
VLC_EXPORT( decoder_t *, input_DecoderNew, ( input_thread_t *, es_format_t *, vlc_bool_t b_force_decoder ) );
VLC_EXPORT( void, input_DecoderDelete, ( decoder_t * ) );
VLC_EXPORT( void, input_DecoderDecode,( decoder_t *, block_t * ) );
#endif
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