Commit 5a70322c authored by Johan Bilien's avatar Johan Bilien

* Moved Program Specific Information decoder to the ts demux module

* Added a mpeg_ts_dvbpsi module tha uses libdvbpsi to decode PSIs. It is
  used by default if the lib is found. It shares much code with mpeg_ts
parent 060c0b88
......@@ -46,6 +46,7 @@ E: jobi@via.ecp.fr
C: jobi
D: VCD input
D: Satellite input
D: libdvbpsi support
S: France
N: Julien Blache
......
......@@ -131,6 +131,7 @@ PLUGINS_TARGETS := a52/a52 \
mpeg_system/mpeg_es \
mpeg_system/mpeg_ps \
mpeg_system/mpeg_ts \
mpeg_system/mpeg_ts_dvbpsi \
mpeg_adec/mpeg_adec \
mpeg_vdec/mpeg_vdec \
network/ipv4 \
......
......@@ -73,6 +73,7 @@ builtins_CFLAGS := @builtins_CFLAGS@
arts_CFLAGS = @arts_CFLAGS@
dvd_CFLAGS = @dvd_CFLAGS@
dvdread_CFLAGS = @dvdread_CFLAGS@
mpeg_ts_dvbpsi_CFLAGS = @mpeg_ts_dvbpsi_CFLAGS@
directx_CFLAGS = @directx_CFLAGS@
esd_CFLAGS = @esd_CFLAGS@
ffmpeg_CFLAGS = @ffmpeg_CFLAGS@
......@@ -107,6 +108,7 @@ directx_LDFLAGS = @directx_LDFLAGS@
dsp_LDFLAGS = @dsp_LDFLAGS@
dvd_LDFLAGS = @dvd_LDFLAGS@
dvdread_LDFLAGS = @dvdread_LDFLAGS@
mpeg_ts_dvbpsi_LDFLAGS = @mpeg_ts_dvbpsi_LDFLAGS@
esd_LDFLAGS = @esd_LDFLAGS@
filter_distort_LDFLAGS = @filter_distort_LDFLAGS@
ffmpeg_LDFLAGS = @ffmpeg_LDFLAGS@
......
This diff is collapsed.
......@@ -680,6 +680,35 @@ then
CPPFLAGS="$save_CPPFLAGS"
fi
dnl
dnl libdvbpsi ts demux
dnl
AC_ARG_ENABLE(dvbpsi,
[ --enable-dvbpsi dvbpsi ts demux module (default disabled)])
if test "x$enable_dvdread" != "xno"
then
if test "x$withval" = x
then
test_LDFLAGS=""
test_CFLAGS=""
else
test_LDFLAGS="-L${withval}/lib"
test_CFLAGS="-I${withval}/include"
fi
CPPFLAGS="$save_CPPFLAGS $test_CFLAGS"
AC_CHECK_HEADER([dvbpsi/dvbpsi.h],[
PLUGINS="${PLUGINS} mpeg_ts_dvbpsi"
mpeg_ts_dvbpsi_LDFLAGS="${mpeg_ts_dvbpsi_LDFLAGS} ${test_LDFLAGS} -ldvbpsi"
mpeg_ts_dvbpsi_CFLAGS="${mpeg_ts_dvbpsi_CFLAGS} ${test_CFLAGS}"
],[
if test "x$enable_dvbpsi" != x
then
AC_MSG_ERROR([Could not find libdvbpsi on your system: you may get it from www.videolan.org])
fi
])
CPPFLAGS="$save_CPPFLAGS"
fi
dnl
dnl VCD module
dnl
......@@ -1503,6 +1532,7 @@ AC_SUBST(builtins_CFLAGS)
AC_SUBST(arts_CFLAGS)
AC_SUBST(dvd_CFLAGS)
AC_SUBST(dvdread_CFLAGS)
AC_SUBST(mpeg_ts_dvbpsi_CFLAGS)
AC_SUBST(directx_CFLAGS)
AC_SUBST(esd_CFLAGS)
AC_SUBST(ffmpeg_CFLAGS)
......@@ -1534,6 +1564,7 @@ AC_SUBST(directx_LDFLAGS)
AC_SUBST(dsp_LDFLAGS)
AC_SUBST(dvd_LDFLAGS)
AC_SUBST(dvdread_LDFLAGS)
AC_SUBST(mpeg_ts_dvbpsi_LDFLAGS)
AC_SUBST(esd_LDFLAGS)
AC_SUBST(filter_distort_LDFLAGS)
AC_SUBST(ffmpeg_LDFLAGS)
......
......@@ -3,7 +3,7 @@
* Collection of useful common types and macros definitions
*****************************************************************************
* Copyright (C) 1998, 1999, 2000 VideoLAN
* $Id: common.h,v 1.97 2002/04/24 00:36:24 sam Exp $
* $Id: common.h,v 1.98 2002/04/25 02:10:33 jobi Exp $
*
* Authors: Samuel Hocevar <sam@via.ecp.fr>
* Vincent Seguin <seguin@via.ecp.fr>
......@@ -562,6 +562,8 @@ typedef struct module_symbols_s
int ( * input_ChangeProgram ) ( struct input_thread_s *, u16 );
struct es_descriptor_s * ( * input_FindES ) ( struct input_thread_s *,
u16 );
struct pgrm_descriptor_s * ( * input_FindProgram )
( struct input_thread_s *, u16 );
struct es_descriptor_s * ( * input_AddES ) ( struct input_thread_s *,
struct pgrm_descriptor_s *, u16, size_t );
void ( * input_DelES ) ( struct input_thread_s *,
......@@ -607,11 +609,12 @@ typedef struct module_symbols_s
ssize_t ( * input_ReadTS ) ( struct input_thread_s *,
struct data_packet_s ** );
void ( * input_DemuxTS ) ( struct input_thread_s *,
struct data_packet_s * );
void ( * input_DemuxPSI ) ( struct input_thread_s *,
struct data_packet_s *,
struct es_descriptor_s *,
boolean_t, boolean_t );
void(* pf_psi_callback)
( struct input_thread_s *,
struct data_packet_s *,
struct es_descriptor_s *,
boolean_t ) );
int ( * input_ClockManageControl ) ( struct input_thread_s *,
struct pgrm_descriptor_s *,
mtime_t );
......
......@@ -4,7 +4,7 @@
* control the pace of reading.
*****************************************************************************
* Copyright (C) 1999, 2000 VideoLAN
* $Id: input_ext-intf.h,v 1.65 2002/04/24 00:36:24 sam Exp $
* $Id: input_ext-intf.h,v 1.66 2002/04/25 02:10:33 jobi Exp $
*
* Authors: Christophe Massiot <massiot@via.ecp.fr>
*
......@@ -234,8 +234,7 @@ typedef struct stream_descriptor_s
es_descriptor_t * p_newly_selected_es; /* ES selected from
* the interface */
es_descriptor_t * p_removed_es; /* ES removed from the interface */
/* Stream control */
stream_ctrl_t control;
......
......@@ -3,7 +3,7 @@
* but exported to plug-ins
*****************************************************************************
* Copyright (C) 1999-2002 VideoLAN
* $Id: input_ext-plugins.h,v 1.22 2002/04/24 00:36:24 sam Exp $
* $Id: input_ext-plugins.h,v 1.23 2002/04/25 02:10:33 jobi Exp $
*
* Authors: Christophe Massiot <massiot@via.ecp.fr>
*
......@@ -49,6 +49,7 @@ int input_SetProgram( struct input_thread_s *, struct pgrm_descriptor_s * );
struct input_area_s * input_AddArea( struct input_thread_s * );
void input_DelArea ( struct input_thread_s *, struct input_area_s * );
struct es_descriptor_s * input_FindES( struct input_thread_s *, u16 );
struct pgrm_descriptor_s * input_FindProgram( struct input_thread_s *, u16 );
struct es_descriptor_s * input_AddES ( struct input_thread_s *,
struct pgrm_descriptor_s *, u16,
size_t );
......@@ -60,6 +61,7 @@ int input_UnselectES( struct input_thread_s *, struct es_descriptor_s * );
# define input_EndStream p_symbols->input_EndStream
# define input_SetProgram p_symbols->input_SetProgram
# define input_FindES p_symbols->input_FindES
# define input_FindProgram p_symbols->input_FindProgram
# define input_AddES p_symbols->input_AddES
# define input_DelES p_symbols->input_DelES
# define input_SelectES p_symbols->input_SelectES
......@@ -203,6 +205,19 @@ static __inline__ void input_NullPacket( input_thread_t * p_input,
#define PSI_IS_PMT 0x01
#define UNKNOWN_PSI 0xff
/****************************************************************************
* psi_callback_t
****************************************************************************
* Used by TS demux to handle a PSI, either with the builtin decoder, either
* with a library such as libdvbpsi
****************************************************************************/
typedef void( * psi_callback_t )(
input_thread_t * p_input,
data_packet_t * p_data,
es_descriptor_t * p_es,
boolean_t b_unit_start );
/*****************************************************************************
* psi_section_t
*****************************************************************************
......@@ -256,6 +271,8 @@ typedef struct pgrm_ts_data_s
{
u16 i_pcr_pid; /* PCR ES, for TS streams */
int i_pmt_version;
/* libdvbpsi pmt decoder handle */
void * p_pmt_handle;
} pgrm_ts_data_t;
/*****************************************************************************
......@@ -264,6 +281,8 @@ typedef struct pgrm_ts_data_s
typedef struct stream_ts_data_s
{
int i_pat_version; /* Current version of the PAT */
/* libdvbpsi pmt decoder handle */
void * p_pat_handle;
} stream_ts_data_t;
/*****************************************************************************
......@@ -292,9 +311,8 @@ es_descriptor_t * input_ParsePS( struct input_thread_s *,
struct data_packet_s * );
ssize_t input_ReadTS ( struct input_thread_s *, struct data_packet_s ** );
void input_DemuxPS ( struct input_thread_s *, struct data_packet_s * );
void input_DemuxTS ( struct input_thread_s *, struct data_packet_s * );
void input_DemuxPSI ( struct input_thread_s *, struct data_packet_s *,
struct es_descriptor_s *, boolean_t, boolean_t );
void input_DemuxTS ( struct input_thread_s *, struct data_packet_s *,
psi_callback_t );
#else
# define input_ParsePES p_symbols->input_ParsePES
# define input_GatherPES p_symbols->input_GatherPES
......@@ -303,7 +321,6 @@ void input_DemuxPSI ( struct input_thread_s *, struct data_packet_s *,
# define input_DemuxPS p_symbols->input_DemuxPS
# define input_ReadTS p_symbols->input_ReadTS
# define input_DemuxTS p_symbols->input_DemuxTS
# define input_DemuxPSI p_symbols->input_DemuxPSI
#endif
......
mpeg_es_SOURCES = mpeg_es.c
mpeg_ps_SOURCES = mpeg_ps.c
mpeg_ts_SOURCES = mpeg_ts.c
mpeg_ts_dvbpsi_SOURCES = mpeg_ts.c
......@@ -2,9 +2,10 @@
* mpeg_ts.c : Transport Stream input module for vlc
*****************************************************************************
* Copyright (C) 2000-2001 VideoLAN
* $Id: mpeg_ts.c,v 1.8 2002/04/19 13:56:11 sam Exp $
* $Id: mpeg_ts.c,v 1.9 2002/04/25 02:10:33 jobi Exp $
*
* Authors: Henri Fallon <henri@via.ecp.fr>
* Johan Bilien <jobi@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
......@@ -35,6 +36,12 @@
#include "input_ext-dec.h"
#include "input_ext-plugins.h"
#if defined MODULE_NAME_IS_mpeg_ts_dvbpsi
#include <dvbpsi/dvbpsi.h>
#include <dvbpsi/descriptor.h>
#include <dvbpsi/pat.h>
#include <dvbpsi/pmt.h>
#endif
/*****************************************************************************
* Constants
*****************************************************************************/
......@@ -48,6 +55,23 @@ static int TSInit ( struct input_thread_s * );
static void TSEnd ( struct input_thread_s * );
static int TSDemux ( struct input_thread_s * );
#if defined MODULE_NAME_IS_mpeg_ts
static void TSDemuxPSI ( struct input_thread_s *, struct data_packet_s *,
struct es_descriptor_s *, boolean_t );
static void TSDecodePAT( input_thread_t *, es_descriptor_t *);
static void TSDecodePMT( input_thread_t *, es_descriptor_t *);
#define PSI_CALLBACK TSDemuxPSI
#elif defined MODULE_NAME_IS_mpeg_ts_dvbpsi
static void TS_DVBPSI_DemuxPSI
( struct input_thread_s *, struct data_packet_s *,
struct es_descriptor_s *, boolean_t );
static void TS_DVBPSI_HandlePAT
( struct input_thread_s *, dvbpsi_pat_t * );
static void TS_DVBPSI_HandlePMT
( struct input_thread_s *, dvbpsi_pmt_t * );
#define PSI_CALLBACK TS_DVBPSI_DemuxPSI
#endif
/*****************************************************************************
* Build configuration tree.
*****************************************************************************/
......@@ -55,9 +79,15 @@ MODULE_CONFIG_START
MODULE_CONFIG_STOP
MODULE_INIT_START
#if defined MODULE_NAME_IS_mpeg_ts
SET_DESCRIPTION( _("ISO 13818-1 MPEG Transport Stream input") )
ADD_CAPABILITY( DEMUX, 160 )
ADD_SHORTCUT( "ts" )
#elif defined MODULE_NAME_IS_mpeg_ts_dvbpsi
SET_DESCRIPTION( _("ISO 13818-1 MPEG Transport Stream input (libdvbpsi)") )
ADD_CAPABILITY( DEMUX, 170 )
ADD_SHORTCUT( "ts_dvbpsi" )
#endif
MODULE_INIT_STOP
MODULE_ACTIVATE_START
......@@ -126,14 +156,27 @@ static int TSInit( input_thread_t * p_input )
p_input->i_bufsize = (p_input->i_mtu / TS_PACKET_SIZE) * TS_PACKET_SIZE;
}
vlc_mutex_lock( &p_input->stream.stream_lock );
if( input_InitStream( p_input, sizeof( stream_ts_data_t ) ) == -1 )
{
return( -1 );
}
p_stream_data = (stream_ts_data_t *)p_input->stream.p_demux_data;
p_stream_data->i_pat_version = PAT_UNINITIALIZED ;
#ifdef MODULE_NAME_IS_mpeg_ts_dvbpsi
p_stream_data->p_pat_handle = (dvbpsi_handle *)
dvbpsi_AttachPAT( (dvbpsi_pat_callback) &TS_DVBPSI_HandlePAT, p_input );
if( p_stream_data->p_pat_handle == NULL )
{
intf_ErrMsg( "input: ts: could not create PAT decoder" );
return( -1 );
}
#endif
/* We'll have to catch the PAT in order to continue
* Then the input will catch the PMT and then the others ES
* The PAT es is indepedent of any program. */
......@@ -145,6 +188,8 @@ static int TSInit( input_thread_t * p_input )
p_demux_data->p_psi_section = malloc(sizeof(psi_section_t));
p_demux_data->p_psi_section->b_is_complete = 1;
vlc_mutex_unlock( &p_input->stream.stream_lock );
return( 0 );
}
......@@ -180,9 +225,651 @@ static int TSDemux( input_thread_t * p_input )
return( i_result );
}
input_DemuxTS( p_input, p_data );
input_DemuxTS( p_input, p_data, (psi_callback_t) &PSI_CALLBACK );
}
return( i_read_once );
}
#if defined MODULE_NAME_IS_mpeg_ts
/*
* PSI demultiplexing and decoding without libdvbpsi
*/
/*****************************************************************************
* DemuxPSI : makes up complete PSI data
*****************************************************************************/
static void TSDemuxPSI( input_thread_t * p_input, data_packet_t * p_data,
es_descriptor_t * p_es, boolean_t b_unit_start )
{
es_ts_data_t * p_demux_data;
p_demux_data = (es_ts_data_t *)p_es->p_demux_data;
#define p_psi (p_demux_data->p_psi_section)
#define p (p_data->p_payload_start)
if( b_unit_start )
{
/* unit_start set to 1 -> presence of a pointer field
* (see ISO/IEC 13818 (2.4.4.2) which should be set to 0x00 */
if( (u8)p[0] != 0x00 )
{
intf_WarnMsg( 2, "input: non zero pointer field found, "
"trying to continue" );
p+=(u8)p[0];
}
else
{
p++;
}
/* This is the begining of a new section */
if( ((u8)(p[1]) & 0xc0) != 0x80 )
{
intf_WarnMsg( 2, "input: invalid PSI packet" );
p_psi->b_trash = 1;
}
else
{
p_psi->i_section_length = ((p[1] & 0xF) << 8) | p[2];
p_psi->b_section_complete = 0;
p_psi->i_read_in_section = 0;
p_psi->i_section_number = (u8)p[6];
if( p_psi->b_is_complete || p_psi->i_section_number == 0 )
{
/* This is a new PSI packet */
p_psi->b_is_complete = 0;
p_psi->b_trash = 0;
p_psi->i_version_number = ( p[5] >> 1 ) & 0x1f;
p_psi->i_last_section_number = (u8)p[7];
/* We'll write at the begining of the buffer */
p_psi->p_current = p_psi->buffer;
}
else
{
if( p_psi->b_section_complete )
{
/* New Section of an already started PSI */
p_psi->b_section_complete = 0;
if( p_psi->i_version_number != (( p[5] >> 1 ) & 0x1f) )
{
intf_WarnMsg( 2, "input: PSI version differs "
"inside same PAT" );
p_psi->b_trash = 1;
}
if( p_psi->i_section_number + 1 != (u8)p[6] )
{
intf_WarnMsg( 2, "input: PSI Section discontinuity, "
"packet lost ?" );
p_psi->b_trash = 1;
}
else
p_psi->i_section_number++;
}
else
{
intf_WarnMsg( 2, "input: got unexpected new PSI section" );
p_psi->b_trash = 1;
}
}
}
} /* b_unit_start */
if( !p_psi->b_trash )
{
/* read */
if( (p_data->p_payload_end - p) >=
( p_psi->i_section_length - p_psi->i_read_in_section ) )
{
/* The end of the section is in this TS packet */
memcpy( p_psi->p_current, p,
(p_psi->i_section_length - p_psi->i_read_in_section) );
p_psi->b_section_complete = 1;
p_psi->p_current +=
(p_psi->i_section_length - p_psi->i_read_in_section);
if( p_psi->i_section_number == p_psi->i_last_section_number )
{
/* This was the last section of PSI */
p_psi->b_is_complete = 1;
switch( p_demux_data->i_psi_type)
{
case PSI_IS_PAT:
TSDecodePAT( p_input, p_es );
break;
case PSI_IS_PMT:
TSDecodePMT( p_input, p_es );
break;
default:
intf_WarnMsg(2, "Received unknown PSI in DemuxPSI");
}
}
}
else
{
memcpy( p_psi->buffer, p, p_data->p_payload_end - p );
p_psi->i_read_in_section += p_data->p_payload_end - p;
p_psi->p_current += p_data->p_payload_end - p;
}
}
#undef p_psi
#undef p
input_DeletePacket( p_input->p_method_data, p_data );
return ;
}
/*****************************************************************************
* DecodePAT : Decodes Programm association table and deal with it
*****************************************************************************/
static void TSDecodePAT( input_thread_t * p_input, es_descriptor_t * p_es )
{
stream_ts_data_t * p_stream_data;
es_ts_data_t * p_demux_data;
pgrm_descriptor_t * p_pgrm;
es_descriptor_t * p_current_es;
byte_t * p_current_data;
int i_section_length, i_program_id, i_pmt_pid;
int i_loop, i_current_section;
boolean_t b_changed = 0;
p_demux_data = (es_ts_data_t *)p_es->p_demux_data;
p_stream_data = (stream_ts_data_t *)p_input->stream.p_demux_data;
#define p_psi (p_demux_data->p_psi_section)
/* Not so fast, Mike ! If the PAT version has changed, we first check
* that its content has really changed before doing anything */
if( p_stream_data->i_pat_version != p_psi->i_version_number )
{
int i_programs = p_input->stream.i_pgrm_number;
p_current_data = p_psi->buffer;
do
{
i_section_length = ((u32)(p_current_data[1] & 0xF) << 8) |
p_current_data[2];
i_current_section = (u8)p_current_data[6];
for( i_loop = 0;
( i_loop < (i_section_length - 9) / 4 ) && !b_changed;
i_loop++ )
{
i_program_id = ( (u32)*(p_current_data + i_loop * 4 + 8) << 8 )
| *(p_current_data + i_loop * 4 + 9);
i_pmt_pid = ( ((u32)*(p_current_data + i_loop * 4 + 10) & 0x1F)
<< 8 )
| *(p_current_data + i_loop * 4 + 11);
if( i_program_id )
{
if( (p_pgrm = input_FindProgram( p_input, i_program_id ))
&& (p_current_es = input_FindES( p_input, i_pmt_pid ))
&& p_current_es->p_pgrm == p_pgrm
&& p_current_es->i_id == i_pmt_pid
&& ((es_ts_data_t *)p_current_es->p_demux_data)->b_psi
&& ((es_ts_data_t *)p_current_es->p_demux_data)
->i_psi_type == PSI_IS_PMT )
{
i_programs--;
}
else
{
b_changed = 1;
}
}
}
p_current_data += 3 + i_section_length;
} while( ( i_current_section < p_psi->i_last_section_number )
&& !b_changed );
/* If we didn't find the expected amount of programs, the PAT has
* changed. Otherwise, it only changed if b_changed is already != 0 */
b_changed = b_changed || i_programs;
}
if( b_changed )
{
/* PAT has changed. We are going to delete all programs and
* create new ones. We chose not to only change what was needed
* as a PAT change may mean the stream is radically changing and
* this is a secure method to avoid crashes */
es_ts_data_t * p_es_demux;
pgrm_ts_data_t * p_pgrm_demux;
p_current_data = p_psi->buffer;
/* Delete all programs */
while( p_input->stream.i_pgrm_number )
{
input_DelProgram( p_input, p_input->stream.pp_programs[0] );
}
do
{
i_section_length = ((u32)(p_current_data[1] & 0xF) << 8) |
p_current_data[2];
i_current_section = (u8)p_current_data[6];
for( i_loop = 0; i_loop < (i_section_length - 9) / 4 ; i_loop++ )
{
i_program_id = ( (u32)*(p_current_data + i_loop * 4 + 8) << 8 )
| *(p_current_data + i_loop * 4 + 9);
i_pmt_pid = ( ((u32)*(p_current_data + i_loop * 4 + 10) & 0x1F)
<< 8 )
| *(p_current_data + i_loop * 4 + 11);
/* If program = 0, we're having info about NIT not PMT */
if( i_program_id )
{
/* Add this program */
p_pgrm = input_AddProgram( p_input, i_program_id,
sizeof( pgrm_ts_data_t ) );
/* whatis the PID of the PMT of this program */
p_pgrm_demux = (pgrm_ts_data_t *)p_pgrm->p_demux_data;
p_pgrm_demux->i_pmt_version = PMT_UNINITIALIZED;
/* Add the PMT ES to this program */
p_current_es = input_AddES( p_input, p_pgrm,(u16)i_pmt_pid,
sizeof( es_ts_data_t) );
p_es_demux = (es_ts_data_t *)p_current_es->p_demux_data;
p_es_demux->b_psi = 1;
p_es_demux->i_psi_type = PSI_IS_PMT;
p_es_demux->p_psi_section =
malloc( sizeof( psi_section_t ) );
p_es_demux->p_psi_section->b_is_complete = 0;
}
}
p_current_data += 3 + i_section_length;
} while( i_current_section < p_psi->i_last_section_number );
/* Go to the beginning of the next section */
p_stream_data->i_pat_version = p_psi->i_version_number;
}
#undef p_psi
}
/*****************************************************************************
* DecodePMT : decode a given Program Stream Map
* ***************************************************************************
* When the PMT changes, it may mean a deep change in the stream, and it is
* careful to delete the ES and add them again. If the PMT doesn't change,
* there no need to do anything.
*****************************************************************************/
static void TSDecodePMT( input_thread_t * p_input, es_descriptor_t * p_es )
{
pgrm_ts_data_t * p_pgrm_data;
es_ts_data_t * p_demux_data;
p_demux_data = (es_ts_data_t *)p_es->p_demux_data;
p_pgrm_data = (pgrm_ts_data_t *)p_es->p_pgrm->p_demux_data;
#define p_psi (p_demux_data->p_psi_section)
if( p_psi->i_version_number != p_pgrm_data->i_pmt_version )
{
es_descriptor_t * p_new_es;
es_ts_data_t * p_es_demux;
byte_t * p_current_data, * p_current_section;
int i_section_length,i_current_section;
int i_prog_info_length, i_loop;
int i_es_info_length, i_pid, i_stream_type;
p_current_section = p_psi->buffer;
p_current_data = p_psi->buffer;
p_pgrm_data->i_pcr_pid = ( ((u32)*(p_current_section + 8) & 0x1F) << 8 ) |
*(p_current_section + 9);
/* Lock stream information */
vlc_mutex_lock( &p_input->stream.stream_lock );
/* Delete all ES in this program except the PSI. We start from the
* end because i_es_number gets decremented after each deletion. */
for( i_loop = p_es->p_pgrm->i_es_number ; i_loop ; )
{
i_loop--;
p_es_demux = (es_ts_data_t *)
p_es->p_pgrm->pp_es[i_loop]->p_demux_data;
if ( ! p_es_demux->b_psi )
{
input_DelES( p_input, p_es->p_pgrm->pp_es[i_loop] );
}
}
/* Then add what we received in this PMT */
do
{
i_section_length = ( ((u32)*(p_current_data + 1) & 0xF) << 8 ) |
*(p_current_data + 2);
i_current_section = (u8)p_current_data[6];
i_prog_info_length = ( ((u32)*(p_current_data + 10) & 0xF) << 8 ) |
*(p_current_data + 11);
/* For the moment we ignore program descriptors */
p_current_data += 12 + i_prog_info_length;
/* The end of the section, before the CRC is at
* p_current_section + i_section_length -1 */
while( p_current_data < p_current_section + i_section_length -1 )
{
i_stream_type = (int)p_current_data[0];
i_pid = ( ((u32)*(p_current_data + 1) & 0x1F) << 8 ) |
*(p_current_data + 2);
i_es_info_length = ( ((u32)*(p_current_data + 3) & 0xF) << 8 ) |
*(p_current_data + 4);
/* Add this ES to the program */
p_new_es = input_AddES( p_input, p_es->p_pgrm,
(u16)i_pid, sizeof( es_ts_data_t ) );
/* Tell the decoders what kind of stream it is */
p_new_es->i_type = i_stream_type;
/* Tell the interface what kind of stream it is and select
* the required ones */
{
switch( i_stream_type )
{
case MPEG1_VIDEO_ES:
case MPEG2_VIDEO_ES:
p_new_es->i_cat = VIDEO_ES;
break;
case MPEG1_AUDIO_ES:
case MPEG2_AUDIO_ES:
p_new_es->i_cat = AUDIO_ES;
break;
case LPCM_AUDIO_ES :
case AC3_AUDIO_ES :
p_new_es->i_stream_id = 0xBD;
p_new_es->i_cat = AUDIO_ES;
break;
/* Not sure this one is fully specification-compliant */
case DVD_SPU_ES :
p_new_es->i_stream_id = 0xBD;
p_new_es->i_cat = SPU_ES;
break;
default :
p_new_es->i_cat = UNKNOWN_ES;
break;
}
}
p_current_data += 5 + i_es_info_length;