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VLC Source 0.5.3.dmg
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input
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input_programs.c
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/*****************************************************************************
* input_programs.c: es_descriptor_t, pgrm_descriptor_t management
*****************************************************************************
* Copyright (C) 1999-2002 VideoLAN
* $Id: input_programs.c,v 1.103 2003/03/12 05:26:46 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.
*****************************************************************************/
/*****************************************************************************
* Preamble
*****************************************************************************/
#include <stdlib.h>
#include <string.h> /* memcpy(), memset() */
#include <vlc/vlc.h>
#include "stream_control.h"
#include "input_ext-intf.h"
#include "input_ext-dec.h"
#include "input_ext-plugins.h"
/*
* NOTICE : all of these functions expect you to have taken the lock on
* p_input->stream.lock
*/
/* Navigation callbacks */
static int ProgramCallback( vlc_object_t *, char const *,
vlc_value_t, vlc_value_t, void * );
static int TitleCallback( vlc_object_t *, char const *,
vlc_value_t, vlc_value_t, void * );
static int ChapterCallback( vlc_object_t *, char const *,
vlc_value_t, vlc_value_t, void * );
static int NavigationCallback( vlc_object_t *, char const *,
vlc_value_t, vlc_value_t, void * );
/*****************************************************************************
* input_InitStream: init the stream descriptor of the given input
*****************************************************************************/
int input_InitStream( input_thread_t * p_input, size_t i_data_len )
{
p_input->stream.i_stream_id = 0;
/* initialized to 0 since we don't give the signal to the interface
* before the end of input initialization */
p_input->stream.b_changed = 0;
p_input->stream.pp_es = NULL;
p_input->stream.pp_selected_es = NULL;
p_input->stream.p_removed_es = NULL;
p_input->stream.p_newly_selected_es = NULL;
p_input->stream.pp_programs = NULL;
p_input->stream.p_selected_program = NULL;
p_input->stream.p_new_program = NULL;
if( i_data_len )
{
if ( (p_input->stream.p_demux_data = malloc( i_data_len )) == NULL )
{
msg_Err( p_input, "out of memory" );
return 1;
}
memset( p_input->stream.p_demux_data, 0, i_data_len );
}
else
{
p_input->stream.p_demux_data = NULL;
}
/* Create a few object variables used for navigation in the interfaces */
var_Create( p_input, "program", VLC_VAR_INTEGER | VLC_VAR_HASCHOICE );
var_Create( p_input, "title", VLC_VAR_INTEGER | VLC_VAR_HASCHOICE );
var_Create( p_input, "chapter", VLC_VAR_INTEGER | VLC_VAR_HASCHOICE );
var_Create( p_input, "navigation", VLC_VAR_VARIABLE | VLC_VAR_HASCHOICE );
var_AddCallback( p_input, "program", ProgramCallback, NULL );
var_AddCallback( p_input, "title", TitleCallback, NULL );
var_AddCallback( p_input, "chapter", ChapterCallback, NULL );
return 0;
}
/*****************************************************************************
* input_EndStream: free all stream descriptors
*****************************************************************************/
void input_EndStream( input_thread_t * p_input )
{
/* Free navigation variables */
var_Destroy( p_input, "program" );
var_Destroy( p_input, "title" );
var_Destroy( p_input, "chapter" );
/* Free all programs and associated ES, and associated decoders. */
while( p_input->stream.i_pgrm_number )
{
input_DelProgram( p_input, p_input->stream.pp_programs[0] );
}
/* Free standalone ES */
while( p_input->stream.i_es_number )
{
input_DelES( p_input, p_input->stream.pp_es[0] );
}
/* Free all areas */
while( p_input->stream.i_area_nb )
{
input_DelArea( p_input, p_input->stream.pp_areas[0] );
}
/* Free selected ES */
if( p_input->stream.pp_selected_es != NULL )
{
free( p_input->stream.pp_selected_es );
}
if( p_input->stream.p_demux_data != NULL )
{
free( p_input->stream.p_demux_data );
}
}
/*****************************************************************************
* input_FindProgram: returns a pointer to a program described by its ID
*****************************************************************************/
pgrm_descriptor_t * input_FindProgram( input_thread_t * p_input,
uint16_t i_pgrm_id )
{
unsigned int i;
for( i = 0; i < p_input->stream.i_pgrm_number; i++ )
{
if( p_input->stream.pp_programs[i]->i_number == i_pgrm_id )
{
return p_input->stream.pp_programs[i];
}
}
return NULL;
}
/*****************************************************************************
* input_AddProgram: add and init a program descriptor
*****************************************************************************
* This program descriptor will be referenced in the given stream descriptor
*****************************************************************************/
pgrm_descriptor_t * input_AddProgram( input_thread_t * p_input,
u16 i_pgrm_id, size_t i_data_len )
{
/* Where to add the pgrm */
pgrm_descriptor_t * p_pgrm = malloc( sizeof(pgrm_descriptor_t) );
vlc_value_t val;
if( p_pgrm == NULL )
{
msg_Err( p_input, "out of memory" );
return NULL;
}
/* Init this entry */
p_pgrm->i_number = i_pgrm_id;
p_pgrm->b_is_ok = 0;
p_pgrm->i_version = 0;
p_pgrm->i_es_number = 0;
p_pgrm->pp_es = NULL;
input_ClockInit( p_pgrm );
p_pgrm->i_synchro_state = SYNCHRO_START;
if( i_data_len )
{
p_pgrm->p_demux_data = malloc( i_data_len );
if( p_pgrm->p_demux_data == NULL )
{
msg_Err( p_input, "out of memory" );
return NULL;
}
memset( p_pgrm->p_demux_data, 0, i_data_len );
}
else
{
p_pgrm->p_demux_data = NULL;
}
/* Add an entry to the list of program associated with the stream */
INSERT_ELEM( p_input->stream.pp_programs,
p_input->stream.i_pgrm_number,
p_input->stream.i_pgrm_number,
p_pgrm );
val.i_int = i_pgrm_id;
var_Change( p_input, "program", VLC_VAR_ADDCHOICE, &val );
return p_pgrm;
}
/*****************************************************************************
* input_DelProgram: destroy a program descriptor
*****************************************************************************
* All ES descriptions referenced in the descriptor will be deleted.
*****************************************************************************/
void input_DelProgram( input_thread_t * p_input, pgrm_descriptor_t * p_pgrm )
{
unsigned int i_pgrm_index;
vlc_value_t val;
/* Find the program in the programs table */
for( i_pgrm_index = 0; i_pgrm_index < p_input->stream.i_pgrm_number;
i_pgrm_index++ )
{
if( p_input->stream.pp_programs[i_pgrm_index] == p_pgrm )
break;
}
/* If the program wasn't found, do nothing */
if( i_pgrm_index == p_input->stream.i_pgrm_number )
{
msg_Err( p_input, "program does not belong to this input" );
return;
}
val.i_int = i_pgrm_index;
var_Change( p_input, "program", VLC_VAR_DELCHOICE, &val );
/* Free the structures that describe the es that belongs to that program */
while( p_pgrm->i_es_number )
{
input_DelES( p_input, p_pgrm->pp_es[0] );
}
/* Free the demux data */
if( p_pgrm->p_demux_data != NULL )
{
free( p_pgrm->p_demux_data );
}
/* Remove this program from the stream's list of programs */
REMOVE_ELEM( p_input->stream.pp_programs,
p_input->stream.i_pgrm_number,
i_pgrm_index );
/* Free the description of this program */
free( p_pgrm );
}
/*****************************************************************************
* input_AddArea: add and init an area descriptor
*****************************************************************************
* This area descriptor will be referenced in the given stream descriptor
*****************************************************************************/
input_area_t * input_AddArea( input_thread_t * p_input,
uint16_t i_area_id, uint16_t i_part_nb )
{
/* Where to add the pgrm */
input_area_t * p_area = malloc( sizeof(input_area_t) );
vlc_value_t val;
int i;
if( p_area == NULL )
{
msg_Err( p_input, "out of memory" );
return NULL;
}
/* Init this entry */
p_area->i_id = i_area_id;
p_area->i_part_nb = i_part_nb;
p_area->i_part= 0;
p_area->i_start = 0;
p_area->i_size = 0;
p_area->i_tell = 0;
p_area->i_seek = NO_SEEK;
/* Add an entry to the list of program associated with the stream */
INSERT_ELEM( p_input->stream.pp_areas,
p_input->stream.i_area_nb,
p_input->stream.i_area_nb,
p_area );
/* Don't add empty areas */
if( i_part_nb == 0 )
return NULL;
/* Take care of the navigation variables */
val.i_int = i_area_id;
var_Change( p_input, "title", VLC_VAR_ADDCHOICE, &val );
val.psz_string = malloc( sizeof("title ") + 5 );
if( val.psz_string )
{
vlc_value_t val2;
sprintf( val.psz_string, "title %2i", i_area_id );
var_Destroy( p_input, val.psz_string );
var_Create( p_input, val.psz_string, VLC_VAR_INTEGER |
VLC_VAR_HASCHOICE | VLC_VAR_ISCOMMAND );
var_AddCallback( p_input, val.psz_string, NavigationCallback,
(void *)(int)i_area_id );
var_Change( p_input, "navigation", VLC_VAR_ADDCHOICE, &val );
for( i = 1; i <= i_part_nb; i++ )
{
val2.i_int = i;
var_Change( p_input, val.psz_string, VLC_VAR_ADDCHOICE, &val2 );
}
}
return p_area;
}
/*****************************************************************************
* input_SetProgram: changes the current program
*****************************************************************************/
int input_SetProgram( input_thread_t * p_input, pgrm_descriptor_t * p_new_prg )
{
unsigned int i_es_index;
int i_required_audio_es;
int i_required_spu_es;
int i_audio_es = 0;
int i_spu_es = 0;
vlc_value_t val;
if ( p_input->stream.p_selected_program )
{
for ( i_es_index = 1 ; /* 0 should be the PMT */
i_es_index < p_input->stream.p_selected_program->
i_es_number ;
i_es_index ++ )
{
#define p_es p_input->stream.p_selected_program->pp_es[i_es_index]
if ( p_es->p_decoder_fifo ) /* if the ES was selected */
{
input_UnselectES( p_input , p_es );
}
#undef p_es
}
}
/* Get the number of the required audio stream */
if( config_GetInt( p_input, "audio" ) )
{
/* Default is the first one */
i_required_audio_es = config_GetInt( p_input, "audio-channel" );
if( i_required_audio_es < 0 )
{
i_required_audio_es = 1;
}
}
else
{
i_required_audio_es = 0;
}
/* Same thing for subtitles */
if( config_GetInt( p_input, "video" ) )
{
/* for spu, default is none */
i_required_spu_es = config_GetInt( p_input, "spu-channel" );
if( i_required_spu_es < 0 )
{
i_required_spu_es = 0;
}
}
else
{
i_required_spu_es = 0;
}
for( i_es_index = 0 ; i_es_index < p_new_prg->i_es_number ; i_es_index ++ )
{
switch( p_new_prg->pp_es[i_es_index]->i_cat )
{
case VIDEO_ES:
msg_Dbg( p_input, "selecting ES %x",
p_new_prg->pp_es[i_es_index]->i_id );
input_SelectES( p_input, p_new_prg->pp_es[i_es_index] );
break;
case AUDIO_ES:
i_audio_es += 1;
if( i_audio_es <= i_required_audio_es )
{
msg_Dbg( p_input, "selecting ES %x",
p_new_prg->pp_es[i_es_index]->i_id );
input_SelectES( p_input, p_new_prg->pp_es[i_es_index]);
}
break;
/* Not sure this one is fully specification-compliant */
case SPU_ES :
i_spu_es += 1;
if( i_spu_es <= i_required_spu_es )
{
msg_Dbg( p_input, "selecting ES %x",
p_new_prg->pp_es[i_es_index]->i_id );
input_SelectES( p_input, p_new_prg->pp_es[i_es_index] );
}
break;
default :
msg_Dbg( p_input, "ES %x has unknown type",
p_new_prg->pp_es[i_es_index]->i_id );
break;
}
}
p_input->stream.p_selected_program = p_new_prg;
/* Update the navigation variables without triggering a callback */
val.i_int = p_new_prg->i_number;
var_Change( p_input, "program", VLC_VAR_SETVALUE, &val );
return( 0 );
}
/*****************************************************************************
* input_DelArea: destroy a area descriptor
*****************************************************************************
* All ES descriptions referenced in the descriptor will be deleted.
*****************************************************************************/
void input_DelArea( input_thread_t * p_input, input_area_t * p_area )
{
unsigned int i_area_index;
vlc_value_t val;
/* Find the area in the areas table */
for( i_area_index = 0; i_area_index < p_input->stream.i_area_nb;
i_area_index++ )
{
if( p_input->stream.pp_areas[i_area_index] == p_area )
break;
}
/* If the area wasn't found, do nothing */
if( i_area_index == p_input->stream.i_area_nb )
{
msg_Err( p_input, "area does not belong to this input" );
return;
}
/* Take care of the navigation variables */
val.psz_string = malloc( sizeof("title ") + 5 );
if( val.psz_string )
{
sprintf( val.psz_string, "title %i", p_area->i_id );
var_Change( p_input, "navigation", VLC_VAR_DELCHOICE, &val );
var_Destroy( p_input, val.psz_string );
}
/* Remove this area from the stream's list of areas */
REMOVE_ELEM( p_input->stream.pp_areas,
p_input->stream.i_area_nb,
i_area_index );
/* Free the description of this area */
free( p_area );
}
/*****************************************************************************
* input_FindES: returns a pointer to an ES described by its ID
*****************************************************************************/
es_descriptor_t * input_FindES( input_thread_t * p_input, uint16_t i_es_id )
{
unsigned int i;
for( i = 0; i < p_input->stream.i_es_number; i++ )
{
if( p_input->stream.pp_es[i]->i_id == i_es_id )
{
return p_input->stream.pp_es[i];
}
}
return NULL;
}
/*****************************************************************************
* input_AddES:
*****************************************************************************
* Reserve a slot in the table of ES descriptors for the ES and add it to the
* list of ES of p_pgrm. If p_pgrm if NULL, then the ES is considered as stand
* alone (PSI ?)
*****************************************************************************/
es_descriptor_t * input_AddES( input_thread_t * p_input,
pgrm_descriptor_t * p_pgrm, u16 i_es_id,
size_t i_data_len )
{
es_descriptor_t * p_es;
p_es = (es_descriptor_t *)malloc( sizeof(es_descriptor_t) );
if( p_es == NULL )
{
msg_Err( p_input, "out of memory" );
return( NULL);
}
INSERT_ELEM( p_input->stream.pp_es,
p_input->stream.i_es_number,
p_input->stream.i_es_number,
p_es );
/* Init its values */
p_es->i_id = i_es_id;
p_es->psz_desc[0] = '\0';
p_es->p_pes = NULL;
p_es->p_decoder_fifo = NULL;
p_es->i_cat = UNKNOWN_ES;
p_es->i_demux_fd = 0;
p_es->c_packets = 0;
p_es->c_invalid_packets = 0;
if( i_data_len )
{
p_es->p_demux_data = malloc( i_data_len );
if( p_es->p_demux_data == NULL )
{
msg_Err( p_input, "out of memory" );
return( NULL );
}
memset( p_es->p_demux_data, 0, i_data_len );
}
else
{
p_es->p_demux_data = NULL;
}
p_es->p_waveformatex = NULL;
p_es->p_bitmapinfoheader = NULL;
/* Add this ES to the program definition if one is given */
if( p_pgrm )
{
INSERT_ELEM( p_pgrm->pp_es,
p_pgrm->i_es_number,
p_pgrm->i_es_number,
p_es );
p_es->p_pgrm = p_pgrm;
}
else
{
p_es->p_pgrm = NULL;
}
return p_es;
}
/*****************************************************************************
* input_DelES:
*****************************************************************************/
void input_DelES( input_thread_t * p_input, es_descriptor_t * p_es )
{
unsigned int i_index, i_es_index;
pgrm_descriptor_t * p_pgrm;
/* Find the ES in the ES table */
for( i_es_index = 0; i_es_index < p_input->stream.i_es_number;
i_es_index++ )
{
if( p_input->stream.pp_es[i_es_index] == p_es )
break;
}
/* If the ES wasn't found, do nothing */
if( i_es_index == p_input->stream.i_es_number )
{
msg_Err( p_input, "ES does not belong to this input" );
return;
}
p_pgrm = p_es->p_pgrm;
/* Kill associated decoder, if any. */
if( p_es->p_decoder_fifo != NULL )
{
input_EndDecoder( p_input, p_es );
}
/* Remove this ES from the description of the program if it is associated to
* one */
if( p_pgrm )
{
for( i_index = 0; i_index < p_pgrm->i_es_number; i_index++ )
{
if( p_pgrm->pp_es[i_index] == p_es )
{
REMOVE_ELEM( p_pgrm->pp_es,
p_pgrm->i_es_number,
i_index );
break;
}
}
}
/* Free the demux data */
if( p_es->p_demux_data != NULL )
{
free( p_es->p_demux_data );
}
if( p_es->p_waveformatex )
{
free( p_es->p_waveformatex );
}
if( p_es->p_bitmapinfoheader )
{
free( p_es->p_bitmapinfoheader );
}
/* Find the ES in the ES table */
for( i_es_index = 0; i_es_index < p_input->stream.i_es_number;
i_es_index++ )
{
if( p_input->stream.pp_es[i_es_index] == p_es )
break;
}
/* Remove this ES from the stream's list of ES */
REMOVE_ELEM( p_input->stream.pp_es,
p_input->stream.i_es_number,
i_es_index );
/* Free the ES */
free( p_es );
}
/*****************************************************************************
* input_SelectES: selects an ES and spawns the associated decoder
*****************************************************************************
* Remember we are still supposed to have stream_lock when entering this
* function ?
*****************************************************************************/
int input_SelectES( input_thread_t * p_input, es_descriptor_t * p_es )
{
if( p_es == NULL )
{
msg_Err( p_input, "nothing to do in input_SelectES" );
return -1;
}
if( ((p_es->i_cat == VIDEO_ES) || (p_es->i_cat == SPU_ES))
&& !config_GetInt( p_input, "video" ) )
{
msg_Dbg( p_input,
"video is disabled, not selecting ES 0x%x", p_es->i_id );
return -1;
}
if( (p_es->i_cat == AUDIO_ES) && !config_GetInt( p_input, "audio" ) )
{
msg_Dbg( p_input,
"audio is disabled, not selecting ES 0x%x", p_es->i_id );
return -1;
}
msg_Dbg( p_input, "selecting ES 0x%x", p_es->i_id );
if( p_es->p_decoder_fifo != NULL )
{
msg_Err( p_input, "ES 0x%x is already selected", p_es->i_id );
return -1;
}
/* Release the lock, not to block the input thread during
* the creation of the thread. */
vlc_mutex_unlock( &p_input->stream.stream_lock );
p_es->p_decoder_fifo = input_RunDecoder( p_input, p_es );
vlc_mutex_lock( &p_input->stream.stream_lock );
if( p_es->p_decoder_fifo == NULL )
{
return -1;
}
return 0;
}
/*****************************************************************************
* input_UnselectES: removes an ES from the list of selected ES
*****************************************************************************/
int input_UnselectES( input_thread_t * p_input, es_descriptor_t * p_es )
{
unsigned int i_index = 0;
if( p_es == NULL )
{
msg_Err( p_input, "nothing to do in input_UnselectES" );
return -1;
}
msg_Dbg( p_input, "unselecting ES 0x%x", p_es->i_id );
if( p_es->p_decoder_fifo == NULL )
{
msg_Err( p_input, "ES 0x%x is not selected", p_es->i_id );
return( -1 );
}
input_EndDecoder( p_input, p_es );
p_es->p_pes = NULL;
if( ( p_es->p_decoder_fifo == NULL ) &&
( p_input->stream.i_selected_es_number > 0 ) )
{
while( ( i_index < p_input->stream.i_selected_es_number - 1 ) &&
( p_input->stream.pp_selected_es[i_index] != p_es ) )
{
i_index++;
}
/* XXX: no need to memmove, we have unsorted data */
REMOVE_ELEM( p_input->stream.pp_selected_es,
p_input->stream.i_selected_es_number,
i_index );
if( p_input->stream.i_selected_es_number == 0 )
{
msg_Dbg( p_input, "no more selected ES" );
return 1;
}
}
return 0;
}
/*****************************************************************************
* Navigation callback: a bunch of navigation variables are used as an
* alternative to the navigation API.
*****************************************************************************/
static int ProgramCallback( vlc_object_t *p_this, char const *psz_cmd,
vlc_value_t oldval, vlc_value_t newval, void *p_data )
{
input_thread_t *p_input = (input_thread_t *)p_this;
if( oldval.i_int == newval.i_int )
return VLC_SUCCESS;
vlc_mutex_lock( &p_input->stream.stream_lock );
if( ( newval.i_int > 0 ) )
{
vlc_mutex_unlock( &p_input->stream.stream_lock );
input_ChangeProgram( p_input, (uint16_t)newval.i_int );
input_SetStatus( p_input, INPUT_STATUS_PLAY );
vlc_mutex_lock( &p_input->stream.stream_lock );
}
vlc_mutex_unlock( &p_input->stream.stream_lock );
return VLC_SUCCESS;
}
static int TitleCallback( vlc_object_t *p_this, char const *psz_cmd,
vlc_value_t oldval, vlc_value_t newval, void *p_data )
{
input_thread_t *p_input = (input_thread_t *)p_this;
input_area_t *p_area;
if( oldval.i_int == newval.i_int )
return VLC_SUCCESS;
/* Sanity check should have already be done by var_Set(). */
vlc_mutex_lock( &p_input->stream.stream_lock );
p_area = p_input->stream.pp_areas[newval.i_int];
p_area->i_part = 1;
vlc_mutex_unlock( &p_input->stream.stream_lock );
input_ChangeArea( p_input, p_area );
input_SetStatus( p_input, INPUT_STATUS_PLAY );
return VLC_SUCCESS;
}
static int ChapterCallback( vlc_object_t *p_this, char const *psz_cmd,
vlc_value_t oldval, vlc_value_t newval, void *p_data )
{
input_thread_t *p_input = (input_thread_t *)p_this;
input_area_t *p_area;
if( oldval.i_int == newval.i_int )
return VLC_SUCCESS;
/* Sanity check will have already be done by var_Set(). */
vlc_mutex_lock( &p_input->stream.stream_lock );
p_area = p_input->stream.p_selected_area;
p_input->stream.p_selected_area->i_part = newval.i_int;
vlc_mutex_unlock( &p_input->stream.stream_lock );
input_ChangeArea( p_input, p_area );
input_SetStatus( p_input, INPUT_STATUS_PLAY );
return VLC_SUCCESS;
}
static int NavigationCallback( vlc_object_t *p_this, char const *psz_cmd,
vlc_value_t oldval, vlc_value_t newval, void *p_data )
{
input_thread_t *p_input = (input_thread_t *)p_this;
uint16_t i_area_id = (int)p_data;
vlc_mutex_lock( &p_input->stream.stream_lock );
if( p_input->stream.p_selected_area->i_id == i_area_id &&
oldval.i_int == newval.i_int )
{
/* Nothing to do */
vlc_mutex_unlock( &p_input->stream.stream_lock );
return VLC_SUCCESS;
}
if( ( i_area_id < p_input->stream.i_area_nb ) && ( newval.i_int > 0 ) &&
( (uint16_t)newval.i_int <=
p_input->stream.pp_areas[i_area_id]->i_part_nb ) )
{
input_area_t *p_area = p_input->stream.pp_areas[i_area_id];
p_input->stream.p_selected_area->i_part = newval.i_int;
vlc_mutex_unlock( &p_input->stream.stream_lock );
input_ChangeArea( p_input, p_area );
input_SetStatus( p_input, INPUT_STATUS_PLAY );
vlc_mutex_lock( &p_input->stream.stream_lock );
}
vlc_mutex_unlock( &p_input->stream.stream_lock );
return VLC_SUCCESS;
}