Commit 5e62636f authored by Christophe Massiot's avatar Christophe Massiot

Adaptation de l'input au video_parser.

parent c3c8af96
This diff is collapsed.
/*******************************************************************************
* input_ctrl.c: Decodeur control
* (c)1999 VideoLAN
*******************************************************************************
* Control the extraction and the decoding of the programs elements carried in
* a stream.
*******************************************************************************/
/*******************************************************************************
* Preamble
*******************************************************************************/
#include <errno.h>
#include <sys/uio.h> /* iovec */
#include <stdlib.h> /* atoi(), malloc(), free() */
#include <string.h>
#include <stdio.h>
#include <unistd.h>
#include <X11/Xlib.h>
#include <X11/extensions/XShm.h>
#include <sys/soundcard.h>
#include <netinet/in.h> /* ntohs */
#include "common.h"
#include "config.h"
#include "mtime.h"
#include "vlc_thread.h"
#include "intf_msg.h"
#include "debug.h"
#include "input.h"
#include "input_netlist.h"
#include "decoder_fifo.h"
#include "audio_output.h"
#include "audio_dsp.h"
#include "audio_decoder.h"
#include "video.h"
#include "video_output.h"
#include "video_decoder.h"
/******************************************************************************
* input_AddPgrmElem: Start the extraction and the decoding of a program element
******************************************************************************
* Add the element given by its PID in the list of PID to extract and spawn
* the decoding thread.
* This function only modifies the table of selected es, but must NOT modify
* the table of ES itself.
******************************************************************************/
int input_AddPgrmElem( input_thread_t *p_input, int i_current_id )
{
int i_es_loop, i_selected_es_loop;
/* Since this function is intended to be called by interface, lock the
* elementary stream structure. */
vlc_mutex_lock( &p_input->es_lock );
/* Find out which PID we need. */
for( i_es_loop = 0; i_es_loop < INPUT_MAX_ES; i_es_loop++ )
{
if( p_input->p_es[i_es_loop].i_id == i_current_id )
{
if( p_input->p_es[i_es_loop].p_dec != NULL )
{
/* We already have a decoder for that PID. */
vlc_mutex_unlock( &p_input->es_lock );
intf_ErrMsg("input error: PID %d already selected\n",
i_current_id);
return( -1 );
}
intf_DbgMsg("Requesting selection of PID %d\n",
i_current_id);
/* Find a free spot in pp_selected_es. */
for( i_selected_es_loop = 0; p_input->pp_selected_es[i_selected_es_loop] != NULL
&& i_selected_es_loop < INPUT_MAX_SELECTED_ES; i_selected_es_loop++ );
if( i_selected_es_loop == INPUT_MAX_SELECTED_ES )
{
/* array full */
vlc_mutex_unlock( &p_input->es_lock );
intf_ErrMsg("input error: MAX_SELECTED_ES reached: try increasing it in config.h\n");
return( -1 );
}
/* Don't decode PSI streams ! */
if( p_input->p_es[i_es_loop].b_psi )
{
intf_ErrMsg("input_error: trying to decode PID %d which is the one of a PSI\n");
vlc_mutex_unlock( &p_input->es_lock );
return( -1 );
}
else
{
/* Spawn the decoder. */
switch( p_input->p_es[i_es_loop].i_type )
{
case MPEG1_AUDIO_ES:
case MPEG2_AUDIO_ES:
/* Spawn audio thread. */
if( ((adec_thread_t*)(p_input->p_es[i_es_loop].p_dec) =
adec_CreateThread( p_input )) == NULL )
{
intf_ErrMsg("Could not start audio decoder\n");
vlc_mutex_unlock( &p_input->es_lock );
return( -1 );
}
break;
case MPEG1_VIDEO_ES:
case MPEG2_VIDEO_ES:
/* Spawn video thread. */
/* Les 2 pointeurs NULL ne doivent pas etre NULL sinon on segfault !!!! */
if( ((vpar_thread_t*)(p_input->p_es[i_es_loop].p_dec) =
vpar_CreateThread( p_input )) == NULL )
{
intf_ErrMsg("Could not start video parser\n");
vlc_mutex_unlock( &p_input->es_lock );
return( -1 );
}
break;
default:
/* That should never happen. */
intf_DbgMsg("input error: unknown stream type (%d)\n",
p_input->p_es[i_es_loop].i_type);
vlc_mutex_unlock( &p_input->es_lock );
return( -1 );
break;
}
/* Initialise the demux */
p_input->p_es[i_es_loop].p_pes_packet = NULL;
p_input->p_es[i_es_loop].i_continuity_counter = 0xFF;
p_input->p_es[i_es_loop].b_random = 0;
/* Mark stream to be demultiplexed. */
intf_DbgMsg("Stream %d added in %d\n", i_current_id, i_selected_es_loop);
p_input->pp_selected_es[i_selected_es_loop] = &p_input->p_es[i_es_loop];
vlc_mutex_unlock( &p_input->es_lock );
return( 0 );
}
}
}
/* We haven't found this PID in the current stream. */
vlc_mutex_unlock( &p_input->es_lock );
intf_ErrMsg("input error: can't find PID %d\n", i_current_id);
return( -1 );
}
/******************************************************************************
* input_DelPgrmElem: Stop the decoding of a program element
******************************************************************************
* Stop the extraction of the element given by its PID and kill the associated
* decoder thread
* This function only modifies the table of selected es, but must NOT modify
* the table of ES itself.
******************************************************************************/
int input_DelPgrmElem( input_thread_t *p_input, int i_current_id )
{
int i_selected_es_loop, i_last_selected;
/* Since this function is intended to be called by interface, lock the
structure. */
vlc_mutex_lock( &p_input->es_lock );
/* Find out which PID we need. */
for( i_selected_es_loop = 0; i_selected_es_loop < INPUT_MAX_SELECTED_ES;
i_selected_es_loop++ )
{
if( p_input->pp_selected_es[i_selected_es_loop] )
{
if( p_input->pp_selected_es[i_selected_es_loop]->i_id == i_current_id )
{
if( !(p_input->pp_selected_es[i_selected_es_loop]->p_dec) )
{
/* We don't have a decoder for that PID. */
vlc_mutex_unlock( &p_input->es_lock );
intf_ErrMsg("input error: PID %d already deselected\n",
i_current_id);
return( -1 );
}
intf_DbgMsg("input debug: requesting termination of PID %d\n",
i_current_id);
/* Cancel the decoder. */
switch( p_input->pp_selected_es[i_selected_es_loop]->i_type )
{
case MPEG1_AUDIO_ES:
case MPEG2_AUDIO_ES:
adec_DestroyThread( (adec_thread_t*)(p_input->pp_selected_es[i_selected_es_loop]->p_dec) );
break;
case MPEG1_VIDEO_ES:
case MPEG2_VIDEO_ES:
vpar_DestroyThread( (vpar_thread_t*)(p_input->pp_selected_es[i_selected_es_loop]->p_dec) /*, NULL */ );
break;
}
/* Unmark stream. */
p_input->pp_selected_es[i_selected_es_loop]->p_dec = NULL;
/* Find last selected stream. */
for( i_last_selected = i_selected_es_loop;
p_input->pp_selected_es[i_last_selected]
&& i_last_selected < INPUT_MAX_SELECTED_ES;
i_last_selected++ );
/* Exchange streams. */
p_input->pp_selected_es[i_selected_es_loop] =
p_input->pp_selected_es[i_last_selected];
p_input->pp_selected_es[i_last_selected] = NULL;
vlc_mutex_unlock( &p_input->es_lock );
return( 0 );
}
}
}
/* We haven't found this PID in the current stream. */
vlc_mutex_unlock( &p_input->es_lock );
intf_ErrMsg("input error: can't find PID %d\n", i_current_id);
return( -1 );
}
/******************************************************************************
* input_IsElemRecv: Test if an element given by its PID is currently received
******************************************************************************
* Cannot return the position of the es in the pp_selected_es, for it can
* change once we have released the lock
******************************************************************************/
boolean_t input_IsElemRecv( input_thread_t *p_input, int i_id )
{
boolean_t b_is_recv = 0;
int i_index = 0;
/* Since this function is intended to be called by interface, lock the
structure. */
vlc_mutex_lock( &p_input->es_lock );
/* Scan the table */
while( i_index < INPUT_MAX_SELECTED_ES && !p_input->pp_selected_es[i_index] )
{
if( p_input->pp_selected_es[i_index]->i_id == i_id )
{
b_is_recv = 1;
break;
}
}
/* Unlock the structure */
vlc_mutex_unlock( &p_input->es_lock );
return( b_is_recv );
}
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