/*****************************************************************************
* input_programs.c: es_descriptor_t, pgrm_descriptor_t management
*****************************************************************************
- * Copyright (C) 1999, 2000 VideoLAN
+ * Copyright (C) 1999-2002 VideoLAN
+ * $Id: input_programs.c,v 1.94 2002/07/31 20:56:52 sam Exp $
*
- * Authors:
+ * 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
/*****************************************************************************
* Preamble
*****************************************************************************/
+#include <stdlib.h>
+#include <string.h> /* memcpy(), memset() */
+#include <sys/types.h> /* off_t */
+
+#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
+ */
/*****************************************************************************
* input_InitStream: init the stream descriptor of the given input
*****************************************************************************/
-void input_InitStream( input_thread_t * p_input )
+int input_InitStream( input_thread_t * p_input, size_t i_data_len )
{
- p_input->stream->i_pgrm_number = 0;
- p_input->stream->pp_programs = NULL;
+
+ 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;
+ }
+
+ return 0;
+}
+
+/*****************************************************************************
+ * input_EndStream: free all stream descriptors
+ *****************************************************************************/
+void input_EndStream( input_thread_t * p_input )
+{
+ /* 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, u16 i_pgrm_id )
+{
+ 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;
}
/*****************************************************************************
* 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)
+ u16 i_pgrm_id, size_t i_data_len )
{
- int i_pgrm_index = p_stream->i_pgrm_number; /* Where to add the pgrm */
-
- intf_DbgMsg("Adding description for pgrm %d", i_pgrm_id);
+ /* Where to add the pgrm */
+ int i_pgrm_index = p_input->stream.i_pgrm_number;
/* Add an entry to the list of program associated with the stream */
p_input->stream.i_pgrm_number++;
p_input->stream.pp_programs = realloc( p_input->stream.pp_programs,
p_input->stream.i_pgrm_number
- * sizeof(pgrm_descriptor_t *) );
+ * sizeof(pgrm_descriptor_t *) );
+ if( p_input->stream.pp_programs == NULL )
+ {
+ msg_Err( p_input, "out of memory" );
+ return( NULL );
+ }
/* Allocate the structure to store this description */
p_input->stream.pp_programs[i_pgrm_index] =
malloc( sizeof(pgrm_descriptor_t) );
-
+ if( p_input->stream.pp_programs[i_pgrm_index] == NULL )
+ {
+ msg_Err( p_input, "out of memory" );
+ return( NULL );
+ }
+
/* Init this entry */
p_input->stream.pp_programs[i_pgrm_index]->i_number = i_pgrm_id;
p_input->stream.pp_programs[i_pgrm_index]->b_is_ok = 0;
+ p_input->stream.pp_programs[i_pgrm_index]->i_version = 0;
p_input->stream.pp_programs[i_pgrm_index]->i_es_number = 0;
p_input->stream.pp_programs[i_pgrm_index]->pp_es = NULL;
- p_input->stream.pp_programs[i_pgrm_index]->delta_cr = 0;
- p_input->stream.pp_programs[i_pgrm_index]->delta_absolute = 0;
- p_input->stream.pp_programs[i_pgrm_index]->last_cr = 0;
- p_input->stream.pp_programs[i_pgrm_index]->c_average_count = 0;
+ input_ClockInit( p_input->stream.pp_programs[i_pgrm_index] );
+
p_input->stream.pp_programs[i_pgrm_index]->i_synchro_state
- = SYNCHRO_NOT_STARTED;
+ = SYNCHRO_START;
- p_input->stream.pp_programs[i_pgrm_index]->p_vout
- = p_input->p_default_vout;
- p_input->stream.pp_programs[i_pgrm_index]->p_aout
- = p_input->p_default_aout;
+ if( i_data_len )
+ {
+ p_input->stream.pp_programs[i_pgrm_index]->p_demux_data =
+ malloc( i_data_len );
+ if( p_input->stream.pp_programs[i_pgrm_index]->p_demux_data == NULL )
+ {
+ msg_Err( p_input, "out of memory" );
+ return( NULL );
+ }
+ memset( p_input->stream.pp_programs[i_pgrm_index]->p_demux_data, 0,
+ i_data_len );
+ }
+ else
+ {
+ p_input->stream.pp_programs[i_pgrm_index]->p_demux_data = NULL;
+ }
return p_input->stream.pp_programs[i_pgrm_index];
}
*****************************************************************************
* All ES descriptions referenced in the descriptor will be deleted.
*****************************************************************************/
-void input_DelProgram( input_thread_t * p_input, u16 i_pgrm_id )
+void input_DelProgram( input_thread_t * p_input, pgrm_descriptor_t * p_pgrm )
{
- int i_index, i_pgrm_index = -1;
- pgrm_descriptor_t * p_pgrm = NULL;
-
- intf_DbgMsg("Deleting description for pgrm %d", i_pgrm_id);
+ int i_pgrm_index;
- /* Find where this program is described */
- for( i_index = 0; i_index < p_input->stream.i_pgrm_number; i_index++ )
+ /* 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_index]->i_number == i_pgrm_id )
- {
- i_pgrm_index = i_index;
- p_pgrm = p_input->stream.pp_programs[ i_pgrm_index ];
+ if( p_input->stream.pp_programs[i_pgrm_index] == p_pgrm )
break;
- }
}
- /* Make sure that the pgrm exists */
- ASSERT(i_pgrm_index >= 0);
- ASSERT(p_pgrm);
+ /* 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;
+ }
/* Free the structures that describe the es that belongs to that program */
- for( i_index = 0; i_index < p_pgrm->i_es_number; i_index++ )
+ while( p_pgrm->i_es_number )
{
- DestroyESDescr( p_input, p_pgrm, p_pgrm->pp_es[i_index]->i_id );
+ input_DelES( p_input, p_pgrm->pp_es[0] );
}
- /* Free the table of es descriptors */
- free( p_pgrm->pp_es );
-
- /* Free the description of this stream */
- free( p_pgrm );
+ /* 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 */
p_input->stream.i_pgrm_number--;
+
p_input->stream.pp_programs[i_pgrm_index] =
p_input->stream.pp_programs[p_input->stream.i_pgrm_number];
- p_input->stream.pp_programs = realloc( p_input->stream.pp_programs,
- p_input->stream.i_pgrm_number
- * sizeof(pgrm_descriptor_t *) );
+ if( p_input->stream.i_pgrm_number )
+ {
+ p_input->stream.pp_programs = realloc( p_input->stream.pp_programs,
+ p_input->stream.i_pgrm_number
+ * sizeof(pgrm_descriptor_t *) );
+ if( p_input->stream.pp_programs == NULL )
+ {
+ msg_Err( p_input, "cannot realloc memory" );
+ }
+ }
+ else
+ {
+ free( p_input->stream.pp_programs );
+ p_input->stream.pp_programs = NULL;
+ }
+
+ /* 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 )
+{
+ /* Where to add the pgrm */
+ int i_area_index = p_input->stream.i_area_nb;
+
+ /* Add an entry to the list of program associated with the stream */
+ p_input->stream.i_area_nb++;
+ p_input->stream.pp_areas = realloc( p_input->stream.pp_areas,
+ p_input->stream.i_area_nb
+ * sizeof(input_area_t *) );
+ if( p_input->stream.pp_areas == NULL )
+ {
+ msg_Err( p_input, "out of memory" );
+ return( NULL );
+ }
+
+ /* Allocate the structure to store this description */
+ p_input->stream.pp_areas[i_area_index] =
+ malloc( sizeof(input_area_t) );
+ if( p_input->stream.pp_areas[i_area_index] == NULL )
+ {
+ msg_Err( p_input, "out of memory" );
+ return( NULL );
+ }
+
+ /* Init this entry */
+ p_input->stream.pp_areas[i_area_index]->i_id = 0;
+ p_input->stream.pp_areas[i_area_index]->i_start = 0;
+ p_input->stream.pp_areas[i_area_index]->i_size = 0;
+ p_input->stream.pp_areas[i_area_index]->i_tell = 0;
+ p_input->stream.pp_areas[i_area_index]->i_seek = NO_SEEK;
+ p_input->stream.pp_areas[i_area_index]->i_part_nb = 1;
+ p_input->stream.pp_areas[i_area_index]->i_part= 0;
+
+ return p_input->stream.pp_areas[i_area_index];
+}
+
+/*****************************************************************************
+ * input_SetProgram: changes the current program
+ *****************************************************************************/
+int input_SetProgram( input_thread_t * p_input, pgrm_descriptor_t * p_new_prg )
+{
+ int i_es_index;
+ int i_required_audio_es;
+ int i_required_spu_es;
+ int i_audio_es = 0;
+ int i_spu_es = 0;
+
+ 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;
+
+ 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 )
+{
+ int i_area_index;
+
+ /* 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;
+ }
+
+ /* Remove this area from the stream's list of areas */
+ p_input->stream.i_area_nb--;
+
+ p_input->stream.pp_areas[i_area_index] =
+ p_input->stream.pp_areas[p_input->stream.i_area_nb];
+ if( p_input->stream.i_area_nb )
+ {
+ p_input->stream.pp_areas = realloc( p_input->stream.pp_areas,
+ p_input->stream.i_area_nb
+ * sizeof(input_area_t *) );
+
+ if( p_input->stream.pp_areas == NULL )
+ {
+ msg_Err( p_input, "cannot realloc memory" );
+ }
+ }
+ else
+ {
+ free( p_input->stream.pp_areas );
+ p_input->stream.pp_areas = NULL;
+ }
+
+ /* 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, u16 i_es_id )
+{
+ 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;
}
/*****************************************************************************
* alone (PSI ?)
*****************************************************************************/
es_descriptor_t * input_AddES( input_thread_t * p_input,
- pgrm_descriptor_t * p_pgrm, u16 i_es_id)
+ pgrm_descriptor_t * p_pgrm, u16 i_es_id,
+ size_t i_data_len )
{
- int i_index;
- es_descriptor_t * p_es = NULL;
+ es_descriptor_t * p_es;
- intf_DbgMsg("Adding description for ES %d", i_es_id);
-
- /* Find an empty slot to store the description of that es */
- for( i_index = 0; i_index < INPUT_MAX_ES &&
- p_input->p_es[i_index].i_id != EMPTY_ID; i_index++ );
-
- if( i_index >= INPUT_MAX_ES )
+ p_es = (es_descriptor_t *)malloc( sizeof(es_descriptor_t) );
+ if( p_es == NULL )
{
- /* No slot is empty */
- intf_ErrMsg("Stream carries too many ES for our decoder");
+ msg_Err( p_input, "out of memory" );
+ return( NULL);
}
- else
+ p_input->stream.i_es_number++;
+ p_input->stream.pp_es = realloc( p_input->stream.pp_es,
+ p_input->stream.i_es_number
+ * sizeof(es_descriptor_t *) );
+ if( p_input->stream.pp_es == NULL )
{
- /* Reserve the slot for that ES */
- p_es = &p_input->p_es[i_index];
- p_es->i_id = i_es_id;
- intf_DbgMsg("Slot %d in p_es table assigned to ES %d",
- i_index, i_es_pid);
+ msg_Err( p_input, "out of memory" );
+ return( NULL );
+ }
+
+ p_input->stream.pp_es[p_input->stream.i_es_number - 1] = p_es;
- /* Init its values */
- p_es->b_discontinuity = 0;
- p_es->p_pes_packet = NULL;
- p_es->p_decoder_fifo = NULL;
+ /* 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;
- /* Add this ES to the program definition if one is given */
- if( p_pgrm )
+ if( i_data_len )
+ {
+ p_es->p_demux_data = malloc( i_data_len );
+ if( p_es->p_demux_data == NULL )
{
- p_pgrm->i_es_number++;
- p_pgrm->pp_es = realloc( p_pgrm->pp_es,
- p_pgrm->i_es_number
- * sizeof(es_descriptor_t *) );
- p_pgrm->pp_es[p_pgrm->i_es_number - 1] = p_es;
- p_es->p_pgrm = p_pgrm;
+ msg_Err( p_input, "out of memory" );
+ return( NULL );
}
- else
+ memset( p_es->p_demux_data, 0, i_data_len );
+ }
+ else
+ {
+ p_es->p_demux_data = NULL;
+ }
+
+ /* Add this ES to the program definition if one is given */
+ if( p_pgrm )
+ {
+ p_pgrm->i_es_number++;
+ p_pgrm->pp_es = realloc( p_pgrm->pp_es,
+ p_pgrm->i_es_number
+ * sizeof(es_descriptor_t *) );
+ if( p_pgrm->pp_es == NULL )
{
- p_es->p_pgrm = NULL;
+ msg_Err( p_input, "out of memory" );
+ return( NULL );
}
+
+ p_pgrm->pp_es[p_pgrm->i_es_number - 1] = 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, u16 i_id)
+void input_DelES( input_thread_t * p_input, es_descriptor_t * p_es )
{
- int i_index;
- program_descriptor_t * p_pgrm;
- es_descriptor_t * p_es;
+ int i_index, i_es_index;
+ pgrm_descriptor_t * p_pgrm;
- /* Look for the description of the ES */
- for( i_index = 0; i_index < INPUT_MAX_ES; i_index++ )
+ /* 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->p_es[i_index].i_id == i_id )
- {
- p_es = &p_input->p_es[i_index];
- p_pgrm = p_input->p_es[i_index].p_pgrm;
+ if( p_input->stream.pp_es[i_es_index] == p_es )
break;
- }
}
- ASSERT( p_es );
+ /* 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++ )
+ for( i_index = 0; i_index < p_pgrm->i_es_number; i_index++ )
{
- if( p_pgrm->p_es[i_index].i_id == i_id )
+ if( p_pgrm->pp_es[i_index] == p_es )
{
p_pgrm->i_es_number--;
- p_pgrm->pp_es[i_index] = p_pgrm->p_es[p_pgrm->i_es_number];
- p_pgrm->pp_es = realloc( p_pgrm->pp_es,
- p_pgrm->i_es_number
- * sizeof(es_decriptor_t *));
+ p_pgrm->pp_es[i_index] = p_pgrm->pp_es[p_pgrm->i_es_number];
+ if( p_pgrm->i_es_number )
+ {
+ p_pgrm->pp_es = realloc( p_pgrm->pp_es,
+ p_pgrm->i_es_number
+ * sizeof(es_descriptor_t *));
+ if( p_pgrm->pp_es == NULL )
+ {
+ msg_Err( p_input, "cannot realloc memory" );
+ }
+ }
+ else
+ {
+ free( p_pgrm->pp_es );
+ p_pgrm->pp_es = NULL;
+ }
break;
}
}
}
- /* The table of stream descriptors is static, so don't free memory
- * but just mark the slot as unused */
- p_es->i_id = EMPTY_ID;
+ /* Free the demux data */
+ if( p_es->p_demux_data != NULL )
+ {
+ free( p_es->p_demux_data );
+ }
+
+ /* 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 */
+ p_input->stream.i_es_number--;
+ p_input->stream.pp_es[i_es_index] =
+ p_input->stream.pp_es[p_input->stream.i_es_number];
+ if( p_input->stream.i_es_number )
+ {
+ p_input->stream.pp_es = realloc( p_input->stream.pp_es,
+ p_input->stream.i_es_number
+ * sizeof(es_descriptor_t *));
+ if( p_input->stream.pp_es == NULL )
+ {
+ msg_Err( p_input, "cannot realloc memory" );
+ }
+ }
+ else
+ {
+ free( p_input->stream.pp_es );
+ p_input->stream.pp_es = NULL;
+ }
+
+ /* 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;
+ }
+
+ 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 )
+{
+
+ 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 ) )
+ {
+ p_input->stream.i_selected_es_number--;
+
+ while( ( i_index < p_input->stream.i_selected_es_number ) &&
+ ( p_input->stream.pp_selected_es[i_index] != p_es ) )
+ {
+ i_index++;
+ }
+
+ p_input->stream.pp_selected_es[i_index] =
+ p_input->stream.pp_selected_es[p_input->stream.i_selected_es_number];
+
+ if( p_input->stream.i_selected_es_number )
+ {
+ p_input->stream.pp_selected_es = realloc(
+ p_input->stream.pp_selected_es,
+ p_input->stream.i_selected_es_number
+ * sizeof(es_descriptor_t *) );
+ if( p_input->stream.pp_selected_es == NULL )
+ {
+ msg_Err( p_input, "cannot realloc memory" );
+ return( -1 );
+ }
+ }
+ else
+ {
+ free( p_input->stream.pp_selected_es );
+ p_input->stream.pp_selected_es = NULL;
+ msg_Dbg( p_input, "no more selected ES" );
+ return( 1 );
+ }
+ }
+
+ return( 0 );
}