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demux.c
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/*****************************************************************************
* demux.c
*****************************************************************************
* Copyright (C) 2004, 2008-2011, 2015-2018 VideoLAN
*
* Authors: Christophe Massiot <[email protected]>
* Andy Gatward <[email protected]>
* Marian Ďurkovič <[email protected]>
*
* 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., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
*****************************************************************************/
#include <stdlib.h>
#include <stdio.h>
#include <stdint.h>
#include <stdbool.h>
#include <stddef.h>
#include <string.h>
#include <stdarg.h>
#include <inttypes.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <ev.h>
#include "dvblast.h"
#include "en50221.h"
#include "mrtg-cnt.h"
#ifdef HAVE_ICONV
#include <iconv.h>
#endif
#include <bitstream/mpeg/ts.h>
#include <bitstream/mpeg/pes.h>
#include <bitstream/mpeg/psi.h>
#include <bitstream/dvb/si.h>
#include <bitstream/dvb/si_print.h>
#include <bitstream/mpeg/psi_print.h>
#include "bitstream_patch.h"
/*****************************************************************************
* Local declarations
*****************************************************************************/
#define MIN_SECTION_FRAGMENT PSI_HEADER_SIZE_SYNTAX1
typedef struct ts_pid_t
{
int i_refcount;
int i_psi_refcount;
bool b_pes;
int8_t i_last_cc;
int i_demux_fd;
/* b_emm is set to true when PID carries EMM packet
and should be outputed in all services */
bool b_emm;
/* PID info and stats */
mtime_t i_bytes_ts;
unsigned long i_packets_passed;
ts_pid_info_t info;
/* biTStream PSI section gathering */
uint8_t *p_psi_buffer;
uint16_t i_psi_buffer_used;
output_t **pp_outputs;
int i_nb_outputs;
int i_pes_status; /* pes + unscrambled */
struct ev_timer timeout_watcher;
} ts_pid_t;
struct eit_sections {
PSI_TABLE_DECLARE(data);
};
/* EIT is carried in several separate tables, we need to track each table
separately, otherwise one table overwrites sections of another table */
#define MAX_EIT_TABLES ( EIT_TABLE_ID_SCHED_ACTUAL_LAST - EIT_TABLE_ID_PF_ACTUAL )
typedef struct sid_t
{
uint16_t i_sid, i_pmt_pid;
uint8_t *p_current_pmt;
struct eit_sections eit_table[MAX_EIT_TABLES];
} sid_t;
mtime_t i_wallclock = 0;
static ts_pid_t p_pids[MAX_PIDS];
static sid_t **pp_sids = NULL;
static int i_nb_sids = 0;
static PSI_TABLE_DECLARE(pp_current_pat_sections);
static PSI_TABLE_DECLARE(pp_next_pat_sections);
static PSI_TABLE_DECLARE(pp_current_cat_sections);
static PSI_TABLE_DECLARE(pp_next_cat_sections);
static PSI_TABLE_DECLARE(pp_current_nit_sections);
static PSI_TABLE_DECLARE(pp_next_nit_sections);
static PSI_TABLE_DECLARE(pp_current_sdt_sections);
static PSI_TABLE_DECLARE(pp_next_sdt_sections);
static mtime_t i_last_dts = -1;
static int i_demux_fd;
static uint64_t i_nb_packets = 0;
static uint64_t i_nb_invalids = 0;
static uint64_t i_nb_discontinuities = 0;
static uint64_t i_nb_errors = 0;
static int i_tuner_errors = 0;
static mtime_t i_last_error = 0;
static mtime_t i_last_reset = 0;
static struct ev_timer print_watcher;
#ifdef HAVE_ICONV
static iconv_t iconv_handle = (iconv_t)-1;
#endif
/*****************************************************************************
* Local prototypes
*****************************************************************************/
static void demux_Handle( block_t *p_ts );
static void SetDTS( block_t *p_list );
static void SetPID( uint16_t i_pid );
static void SetPID_EMM( uint16_t i_pid );
static void UnsetPID( uint16_t i_pid );
static void StartPID( output_t *p_output, uint16_t i_pid );
static void StopPID( output_t *p_output, uint16_t i_pid );
static void SelectPID( uint16_t i_sid, uint16_t i_pid, bool b_pcr );
static void UnselectPID( uint16_t i_sid, uint16_t i_pid );
static void SelectPMT( uint16_t i_sid, uint16_t i_pid );
static void UnselectPMT( uint16_t i_sid, uint16_t i_pid );
static void GetPIDS( uint16_t **ppi_wanted_pids, int *pi_nb_wanted_pids,
uint16_t *pi_pcr_pid, uint16_t i_sid,
const uint16_t *pi_pids, int i_nb_pids );
static bool SIDIsSelected( uint16_t i_sid );
static bool PIDWouldBeSelected( uint8_t *p_es );
static bool PMTNeedsDescrambling( uint8_t *p_pmt );
static void FlushEIT( output_t *p_output, mtime_t i_dts );
static void SendTDT( block_t *p_ts );
static void SendEMM( block_t *p_ts );
static void NewPAT( output_t *p_output );
static void NewPMT( output_t *p_output );
static void NewNIT( output_t *p_output );
static void NewSDT( output_t *p_output );
static void HandlePSIPacket( uint8_t *p_ts, mtime_t i_dts );
static const char *get_pid_desc(uint16_t i_pid, uint16_t *i_sid);
/*
* Remap an ES pid to a fixed value.
* Multiple streams of the same type use sequential pids
* Returns the new pid and updates the map tables
*/
static uint16_t map_es_pid(output_t * p_output, uint8_t *p_es, uint16_t i_pid)
{
uint16_t i_newpid = i_pid;
uint16_t i_stream_type = pmtn_get_streamtype(p_es);
if ( !b_do_remap && !p_output->config.b_do_remap )
return i_pid;
msg_Dbg(NULL, "REMAP: Found elementary stream type 0x%02x with original PID 0x%x (%u):", i_stream_type, i_pid, i_pid);
switch ( i_stream_type )
{
case 0x03: /* audio MPEG-1 */
case 0x04: /* audio MPEG-2 */
case 0x0f: /* audio AAC ADTS */
case 0x11: /* audio AAC LATM */
case 0x81: /* ATSC AC-3 */
case 0x87: /* ATSC Enhanced AC-3 */
if ( b_do_remap )
i_newpid = pi_newpids[I_APID];
else
i_newpid = p_output->config.pi_confpids[I_APID];
break;
case 0x01: /* video MPEG-1 */
case 0x02: /* video MPEG-2 */
case 0x10: /* video MPEG-4 */
case 0x1b: /* video H264 */
case 0x24: /* video H265 */
case 0x42: /* video AVS */
if ( b_do_remap )
i_newpid = pi_newpids[I_VPID];
else
i_newpid = p_output->config.pi_confpids[I_VPID];
break;
case 0x06: { /* PES Private Data - We must check the descriptors */
/* By default, nothing identified */
uint8_t SubStreamType = N_MAP_PIDS;
uint16_t j = 0;
const uint8_t *p_desc;
/* Loop over the descriptors */
while ( (p_desc = descs_get_desc( pmtn_get_descs( p_es ), j )) != NULL )
{
/* Get the descriptor tag */
uint8_t i_tag = desc_get_tag( p_desc );
j++;
/* Check if the tag is: A/52, Enhanced A/52, DTS, AAC */
if (i_tag == 0x6a || i_tag == 0x7a || i_tag == 0x7b || i_tag == 0x7c)
SubStreamType=I_APID;
/* Check if the tag is: VBI + teletext, teletext, dvbsub */
if (i_tag == 0x46 || i_tag == 0x56 || i_tag == 0x59)
SubStreamType=I_SPUPID;
}
/* Audio found */
if (SubStreamType==I_APID) {
msg_Dbg(NULL, "REMAP: PES Private Data stream identified as [Audio]");
if ( b_do_remap )
i_newpid = pi_newpids[I_APID];
else
i_newpid = p_output->config.pi_confpids[I_APID];
}
/* Subtitle found */
if (SubStreamType==I_SPUPID) {
msg_Dbg(NULL, "REMAP: PES Private Data stream identified as [Subtitle]");
if ( b_do_remap )
i_newpid = pi_newpids[I_SPUPID];
else
i_newpid = p_output->config.pi_confpids[I_SPUPID];
}
break;
}
}
if (!i_newpid)
return i_pid;
/* Got the new base for the mapped pid. Find the next free one
we do this to ensure that multiple audios get unique pids */
while (p_output->pi_freepids[i_newpid] != UNUSED_PID)
i_newpid++;
p_output->pi_freepids[i_newpid] = i_pid; /* Mark as in use */
p_output->pi_newpids[i_pid] = i_newpid; /* Save the new pid */
msg_Dbg(NULL, "REMAP: => Elementary stream is remapped to PID 0x%x (%u)", i_newpid, i_newpid);
return i_newpid;
}
/*****************************************************************************
* FindSID
*****************************************************************************/
static inline sid_t *FindSID( uint16_t i_sid )
{
int i;
for ( i = 0; i < i_nb_sids; i++ )
{
sid_t *p_sid = pp_sids[i];
if ( p_sid->i_sid == i_sid )
return p_sid;
}
return NULL;
}
/*****************************************************************************
* Print info
*****************************************************************************/
static void PrintCb( struct ev_loop *loop, struct ev_timer *w, int revents )
{
uint64_t i_bitrate = i_nb_packets * TS_SIZE * 8 * 1000000 / i_print_period;
switch (i_print_type)
{
case PRINT_XML:
fprintf(print_fh,
"<STATUS type=\"bitrate\" status=\"%d\" value=\"%"PRIu64"\" />\n",
i_bitrate ? 1 : 0, i_bitrate);
break;
case PRINT_TEXT:
fprintf(print_fh, "bitrate: %"PRIu64"\n", i_bitrate);
break;
default:
break;
}
i_nb_packets = 0;
if ( i_nb_invalids )
{
switch (i_print_type)
{
case PRINT_XML:
fprintf(print_fh,
"<ERROR type=\"invalid_ts\" number=\"%"PRIu64"\" />\n",
i_nb_invalids);
break;
case PRINT_TEXT:
fprintf(print_fh, "invalids: %"PRIu64"\n", i_nb_invalids);
break;
default:
break;
}
i_nb_invalids = 0;
}
if ( i_nb_discontinuities )
{
switch (i_print_type)
{
case PRINT_XML:
fprintf(print_fh,
"<ERROR type=\"invalid_discontinuity\" number=\"%"PRIu64"\" />\n",
i_nb_discontinuities);
break;
case PRINT_TEXT:
fprintf(print_fh, "discontinuities: %"PRIu64"\n",
i_nb_discontinuities);
break;
default:
break;
}
i_nb_discontinuities = 0;
}
if ( i_nb_errors )
{
switch (i_print_type)
{
case PRINT_XML:
fprintf(print_fh,
"<ERROR type=\"transport_error\" number=\"%"PRIu64"\" />\n",
i_nb_errors);
break;
case PRINT_TEXT:
fprintf(print_fh, "errors: %"PRIu64"\n", i_nb_errors);
break;
default:
break;
}
i_nb_errors = 0;
}
}
static void PrintESCb( struct ev_loop *loop, struct ev_timer *w, int revents )
{
ts_pid_t *p_pid = container_of( w, ts_pid_t, timeout_watcher );
uint16_t i_pid = p_pid - p_pids;
switch (i_print_type)
{
case PRINT_XML:
fprintf(print_fh,
"<STATUS type=\"pid\" pid=\"%"PRIu16"\" status=\"0\" />\n",
i_pid);
break;
case PRINT_TEXT:
fprintf(print_fh, "pid: %"PRIu16" down\n", i_pid);
break;
default:
break;
}
ev_timer_stop( loop, w );
p_pid->i_pes_status = -1;
}
static void PrintES( uint16_t i_pid )
{
const ts_pid_t *p_pid = &p_pids[i_pid];
switch (i_print_type)
{
case PRINT_XML:
fprintf(print_fh,
"<STATUS type=\"pid\" pid=\"%"PRIu16"\" status=\"1\" pes=\"%d\" />\n",
i_pid, p_pid->i_pes_status == 1 ? 1 : 0);
break;
case PRINT_TEXT:
fprintf(print_fh, "pid: %"PRIu16" up%s\n",
i_pid, p_pid->i_pes_status == 1 ? " pes" : "");
break;
default:
break;
}
}
/*****************************************************************************
* demux_Open
*****************************************************************************/
void demux_Open( void )
{
int i;
memset( p_pids, 0, sizeof(p_pids) );
pf_Open();
for ( i = 0; i < MAX_PIDS; i++ )
{
p_pids[i].i_last_cc = -1;
p_pids[i].i_demux_fd = -1;
psi_assemble_init( &p_pids[i].p_psi_buffer,
&p_pids[i].i_psi_buffer_used );
p_pids[i].i_pes_status = -1;
}
if ( b_budget_mode )
i_demux_fd = pf_SetFilter(8192);
psi_table_init( pp_current_pat_sections );
psi_table_init( pp_next_pat_sections );
SetPID(PAT_PID);
p_pids[PAT_PID].i_psi_refcount++;
if ( b_enable_emm )
{
psi_table_init( pp_current_cat_sections );
psi_table_init( pp_next_cat_sections );
SetPID_EMM(CAT_PID);
p_pids[CAT_PID].i_psi_refcount++;
}
SetPID(NIT_PID);
p_pids[NIT_PID].i_psi_refcount++;
psi_table_init( pp_current_sdt_sections );
psi_table_init( pp_next_sdt_sections );
SetPID(SDT_PID);
p_pids[SDT_PID].i_psi_refcount++;
SetPID(EIT_PID);
p_pids[EIT_PID].i_psi_refcount++;
SetPID(RST_PID);
SetPID(TDT_PID);
if ( i_print_period )
{
ev_timer_init( &print_watcher, PrintCb,
i_print_period / 1000000., i_print_period / 1000000. );
ev_timer_start( event_loop, &print_watcher );
}
}
/*****************************************************************************
* demux_Close
*****************************************************************************/
void demux_Close( void )
{
int i, r;
psi_table_free( pp_current_pat_sections );
psi_table_free( pp_next_pat_sections );
psi_table_free( pp_current_cat_sections );
psi_table_free( pp_next_cat_sections );
psi_table_free( pp_current_nit_sections );
psi_table_free( pp_next_nit_sections );
psi_table_free( pp_current_sdt_sections );
psi_table_free( pp_next_sdt_sections );
for ( i = 0; i < MAX_PIDS; i++ )
{
ev_timer_stop( event_loop, &p_pids[i].timeout_watcher );
free( p_pids[i].p_psi_buffer );
free( p_pids[i].pp_outputs );
}
for ( i = 0; i < i_nb_sids; i++ )
{
sid_t *p_sid = pp_sids[i];
for ( r = 0; r < MAX_EIT_TABLES; r++ ) {
psi_table_free( p_sid->eit_table[r].data );
}
free( p_sid->p_current_pmt );
free( p_sid );
}
free( pp_sids );
#ifdef HAVE_ICONV
if (iconv_handle != (iconv_t)-1) {
iconv_close(iconv_handle);
iconv_handle = (iconv_t)-1;
}
#endif
if ( i_print_period )
ev_timer_stop( event_loop, &print_watcher );
}
/*****************************************************************************
* demux_Run
*****************************************************************************/
void demux_Run( block_t *p_ts )
{
i_wallclock = mdate();
mrtgAnalyse( p_ts );
SetDTS( p_ts );
while ( p_ts != NULL )
{
block_t *p_next = p_ts->p_next;
p_ts->p_next = NULL;
demux_Handle( p_ts );
p_ts = p_next;
}
}
/*****************************************************************************
* demux_Handle
*****************************************************************************/
static void demux_Handle( block_t *p_ts )
{
uint16_t i_pid = ts_get_pid( p_ts->p_ts );
ts_pid_t *p_pid = &p_pids[i_pid];
uint8_t i_cc = ts_get_cc( p_ts->p_ts );
int i;
i_nb_packets++;
if ( !ts_validate( p_ts->p_ts ) )
{
msg_Warn( NULL, "lost TS sync" );
block_Delete( p_ts );
i_nb_invalids++;
return;
}
if ( i_pid != PADDING_PID )
p_pid->info.i_scrambling = ts_get_scrambling( p_ts->p_ts );
p_pid->info.i_last_packet_ts = i_wallclock;
p_pid->info.i_packets++;
p_pid->i_packets_passed++;
/* Calculate bytes_per_sec */
if ( i_wallclock > p_pid->i_bytes_ts + 1000000 ) {
p_pid->info.i_bytes_per_sec = p_pid->i_packets_passed * TS_SIZE;
p_pid->i_packets_passed = 0;
p_pid->i_bytes_ts = i_wallclock;
}
if ( p_pid->info.i_first_packet_ts == 0 )
p_pid->info.i_first_packet_ts = i_wallclock;
if ( i_pid != PADDING_PID && p_pid->i_last_cc != -1
&& !ts_check_duplicate( i_cc, p_pid->i_last_cc )
&& ts_check_discontinuity( i_cc, p_pid->i_last_cc ) )
{
unsigned int expected_cc = (p_pid->i_last_cc + 1) & 0x0f;
uint16_t i_sid = 0;
const char *pid_desc = get_pid_desc(i_pid, &i_sid);
p_pid->info.i_cc_errors++;
i_nb_discontinuities++;
msg_Warn( NULL, "TS discontinuity on pid %4hu expected_cc %2u got %2u (%s, sid %d)",
i_pid, expected_cc, i_cc, pid_desc, i_sid );
}
if ( ts_get_transporterror( p_ts->p_ts ) )
{
uint16_t i_sid = 0;
const char *pid_desc = get_pid_desc(i_pid, &i_sid);
p_pid->info.i_transport_errors++;
msg_Warn( NULL, "transport_error_indicator on pid %hu (%s, sid %u)",
i_pid, pid_desc, i_sid );
i_nb_errors++;
i_tuner_errors++;
i_last_error = i_wallclock;
}
else if ( i_wallclock > i_last_error + WATCHDOG_WAIT )
i_tuner_errors = 0;
if ( i_tuner_errors > MAX_ERRORS )
{
i_tuner_errors = 0;
msg_Warn( NULL,
"too many transport errors, tuning again" );
switch (i_print_type) {
case PRINT_XML:
fprintf(print_fh, "<EVENT type=\"reset\" cause=\"transport\" />\n");
break;
case PRINT_TEXT:
fprintf(print_fh, "reset cause: transport\n");
break;
default:
break;
}
pf_Reset();
}
if ( i_es_timeout )
{
int i_pes_status = -1;
if ( ts_get_scrambling( p_ts->p_ts ) )
i_pes_status = 0;
else if ( ts_get_unitstart( p_ts->p_ts ) )
{
uint8_t *p_payload = ts_payload( p_ts->p_ts );
if ( p_payload + 3 < p_ts->p_ts + TS_SIZE )
i_pes_status = pes_validate( p_payload ) ? 1 : 0;
}
if ( i_pes_status != -1 )
{
if ( p_pid->i_pes_status == -1 )
{
p_pid->i_pes_status = i_pes_status;
PrintES( i_pid );
if ( i_pid != TDT_PID )
{
ev_timer_init( &p_pid->timeout_watcher, PrintESCb,
i_es_timeout / 1000000.,
i_es_timeout / 1000000. );
ev_timer_start( event_loop, &p_pid->timeout_watcher );
}
else
{
ev_timer_init( &p_pid->timeout_watcher, PrintESCb, 30, 30 );
ev_timer_start( event_loop, &p_pid->timeout_watcher );
}
}
else
{
if ( p_pid->i_pes_status != i_pes_status )
{
p_pid->i_pes_status = i_pes_status;
PrintES( i_pid );
}
ev_timer_again( event_loop, &p_pid->timeout_watcher );
}
}
}
if ( !ts_get_transporterror( p_ts->p_ts ) )
{
/* PSI parsing */
if ( i_pid == TDT_PID || i_pid == RST_PID )
SendTDT( p_ts );
else if ( p_pid->i_psi_refcount )
HandlePSIPacket( p_ts->p_ts, p_ts->i_dts );
if ( b_enable_emm && p_pid->b_emm )
SendEMM( p_ts );
}
p_pid->i_last_cc = i_cc;
/* Output */
for ( i = 0; i < p_pid->i_nb_outputs; i++ )
{
output_t *p_output = p_pid->pp_outputs[i];
if ( p_output != NULL )
{
if ( i_ca_handle && (p_output->config.i_config & OUTPUT_WATCH) &&
ts_get_unitstart( p_ts->p_ts ) )
{
uint8_t *p_payload;
if ( ts_get_scrambling( p_ts->p_ts ) ||
( p_pid->b_pes
&& (p_payload = ts_payload( p_ts->p_ts )) + 3
< p_ts->p_ts + TS_SIZE
&& !pes_validate(p_payload) ) )
{
if ( i_wallclock >
i_last_reset + WATCHDOG_REFRACTORY_PERIOD )
{
p_output->i_nb_errors++;
p_output->i_last_error = i_wallclock;
}
}
else if ( i_wallclock > p_output->i_last_error + WATCHDOG_WAIT )
p_output->i_nb_errors = 0;
if ( p_output->i_nb_errors > MAX_ERRORS )
{
int j;
for ( j = 0; j < i_nb_outputs; j++ )
pp_outputs[j]->i_nb_errors = 0;
msg_Warn( NULL,
"too many errors for stream %s, resetting",
p_output->config.psz_displayname );
switch (i_print_type) {
case PRINT_XML:
fprintf(print_fh, "<EVENT type=\"reset\" cause=\"scrambling\" />\n");
break;
case PRINT_TEXT:
fprintf(print_fh, "reset cause: scrambling");
break;
default:
break;
}
i_last_reset = i_wallclock;
en50221_Reset();
}
}
if ( p_output->i_pcr_pid != i_pid
|| (ts_has_adaptation(p_ts->p_ts)
&& ts_get_adaptation(p_ts->p_ts)
&& tsaf_has_pcr(p_ts->p_ts)) )
output_Put( p_output, p_ts );
if ( p_output->p_eit_ts_buffer != NULL
&& p_ts->i_dts > p_output->p_eit_ts_buffer->i_dts
+ MAX_EIT_RETENTION )
FlushEIT( p_output, p_ts->i_dts );
}
}
for ( i = 0; i < i_nb_outputs; i++ )
{
output_t *p_output = pp_outputs[i];
if ( !(p_output->config.i_config & OUTPUT_VALID) ||
!p_output->config.b_passthrough )
continue;
output_Put( p_output, p_ts );
}
if ( output_dup.config.i_config & OUTPUT_VALID )
output_Put( &output_dup, p_ts );
if ( b_passthrough )
fwrite(p_ts->p_ts, TS_SIZE, 1, stdout);
p_ts->i_refcount--;
if ( !p_ts->i_refcount )
block_Delete( p_ts );
}
/*****************************************************************************
* demux_Change : called from main thread
*****************************************************************************/
static bool IsIn( const uint16_t *pi_pids, int i_nb_pids, uint16_t i_pid )
{
int i;
for ( i = 0; i < i_nb_pids; i++ )
if ( i_pid == pi_pids[i] ) break;
return ( i != i_nb_pids );
}
void demux_Change( output_t *p_output, const output_config_t *p_config )
{
uint16_t *pi_wanted_pids, *pi_current_pids;
int i_nb_wanted_pids, i_nb_current_pids;
uint16_t i_wanted_pcr_pid, i_current_pcr_pid;
uint16_t i_old_sid = p_output->config.i_sid;
uint16_t i_sid = p_config->i_sid;
uint16_t *pi_old_pids = p_output->config.pi_pids;
uint16_t *pi_pids = p_config->pi_pids;
int i_old_nb_pids = p_output->config.i_nb_pids;
int i_nb_pids = p_config->i_nb_pids;
bool b_sid_change = i_sid != i_old_sid;
bool b_pid_change = false, b_tsid_change = false;
bool b_dvb_change = !!((p_output->config.i_config ^ p_config->i_config)
& OUTPUT_DVB);
bool b_epg_change = !!((p_output->config.i_config ^ p_config->i_config)
& OUTPUT_EPG);
bool b_network_change =
(dvb_string_cmp(&p_output->config.network_name, &p_config->network_name) ||
p_output->config.i_network_id != p_config->i_network_id);
bool b_service_name_change =
(dvb_string_cmp(&p_output->config.service_name, &p_config->service_name) ||
dvb_string_cmp(&p_output->config.provider_name, &p_config->provider_name));
bool b_remap_change = p_output->config.i_new_sid != p_config->i_new_sid ||
p_output->config.i_onid != p_config->i_onid ||
p_output->config.b_do_remap != p_config->b_do_remap ||
p_output->config.pi_confpids[I_PMTPID] != p_config->pi_confpids[I_PMTPID] ||
p_output->config.pi_confpids[I_APID] != p_config->pi_confpids[I_APID] ||
p_output->config.pi_confpids[I_VPID] != p_config->pi_confpids[I_VPID] ||
p_output->config.pi_confpids[I_SPUPID] != p_config->pi_confpids[I_SPUPID];
int i;
p_output->config.i_config = p_config->i_config;
p_output->config.i_network_id = p_config->i_network_id;
p_output->config.i_new_sid = p_config->i_new_sid;
p_output->config.i_onid = p_config->i_onid;
p_output->config.b_do_remap = p_config->b_do_remap;
memcpy(p_output->config.pi_confpids, p_config->pi_confpids,
sizeof(uint16_t) * N_MAP_PIDS);
/* Change output settings related to names. */
dvb_string_clean( &p_output->config.network_name );
dvb_string_clean( &p_output->config.service_name );
dvb_string_clean( &p_output->config.provider_name );
dvb_string_copy( &p_output->config.network_name,
&p_config->network_name );
dvb_string_copy( &p_output->config.service_name,
&p_config->service_name );
dvb_string_copy( &p_output->config.provider_name,
&p_config->provider_name );
if ( p_config->i_tsid != -1 && p_output->config.i_tsid != p_config->i_tsid )
{
p_output->i_tsid = p_output->config.i_tsid = p_config->i_tsid;
b_tsid_change = true;
}
if ( p_config->i_tsid == -1 && p_output->config.i_tsid != -1 )
{
p_output->config.i_tsid = p_config->i_tsid;
if ( psi_table_validate(pp_current_pat_sections) && !b_random_tsid )
p_output->i_tsid =
psi_table_get_tableidext(pp_current_pat_sections);
else
p_output->i_tsid = rand() & 0xffff;
b_tsid_change = true;
}
if ( p_config->b_passthrough == p_output->config.b_passthrough &&
!b_sid_change && p_config->i_nb_pids == p_output->config.i_nb_pids &&
(!p_config->i_nb_pids ||
!memcmp( p_output->config.pi_pids, p_config->pi_pids,
p_config->i_nb_pids * sizeof(uint16_t) )) )
goto out_change;
GetPIDS( &pi_wanted_pids, &i_nb_wanted_pids, &i_wanted_pcr_pid,
i_sid, pi_pids, i_nb_pids );
GetPIDS( &pi_current_pids, &i_nb_current_pids, &i_current_pcr_pid,
i_old_sid, pi_old_pids, i_old_nb_pids );
if ( b_sid_change && i_old_sid )
{
sid_t *p_old_sid = FindSID( i_old_sid );
p_output->config.i_sid = p_config->i_sid;
if ( p_old_sid != NULL )
{
if ( i_sid != i_old_sid )
UnselectPMT( i_old_sid, p_old_sid->i_pmt_pid );
if ( i_ca_handle && !SIDIsSelected( i_old_sid )
&& p_old_sid->p_current_pmt != NULL
&& PMTNeedsDescrambling( p_old_sid->p_current_pmt ) )
en50221_DeletePMT( p_old_sid->p_current_pmt );
}
}
for ( i = 0; i < i_nb_current_pids; i++ )
{
if ( !IsIn( pi_wanted_pids, i_nb_wanted_pids, pi_current_pids[i] ) )
{
StopPID( p_output, pi_current_pids[i] );
b_pid_change = true;
}
}
if ( b_sid_change && i_ca_handle && i_old_sid &&
SIDIsSelected( i_old_sid ) )
{
sid_t *p_old_sid = FindSID( i_old_sid );
if ( p_old_sid != NULL && p_old_sid->p_current_pmt != NULL
&& PMTNeedsDescrambling( p_old_sid->p_current_pmt ) )
en50221_UpdatePMT( p_old_sid->p_current_pmt );
}
for ( i = 0; i < i_nb_wanted_pids; i++ )
{
if ( !IsIn( pi_current_pids, i_nb_current_pids, pi_wanted_pids[i] ) )
{
StartPID( p_output, pi_wanted_pids[i] );
b_pid_change = true;
}
}
free( pi_wanted_pids );
free( pi_current_pids );
p_output->i_pcr_pid = i_wanted_pcr_pid;
if ( b_sid_change && i_sid )
{
sid_t *p_sid = FindSID( i_sid );
p_output->config.i_sid = i_old_sid;
if ( p_sid != NULL )
{
if ( i_sid != i_old_sid )
SelectPMT( i_sid, p_sid->i_pmt_pid );
if ( i_ca_handle && !SIDIsSelected( i_sid )
&& p_sid->p_current_pmt != NULL
&& PMTNeedsDescrambling( p_sid->p_current_pmt ) )
en50221_AddPMT( p_sid->p_current_pmt );
}
}
if ( i_ca_handle && i_sid && SIDIsSelected( i_sid ) )
{
sid_t *p_sid = FindSID( i_sid );
if ( p_sid != NULL && p_sid->p_current_pmt != NULL
&& PMTNeedsDescrambling( p_sid->p_current_pmt ) )
en50221_UpdatePMT( p_sid->p_current_pmt );
}
p_output->config.b_passthrough = p_config->b_passthrough;
p_output->config.i_sid = i_sid;
free( p_output->config.pi_pids );
p_output->config.pi_pids = malloc( sizeof(uint16_t) * i_nb_pids );
memcpy( p_output->config.pi_pids, pi_pids, sizeof(uint16_t) * i_nb_pids );
p_output->config.i_nb_pids = i_nb_pids;
out_change:
if ( b_sid_change || b_pid_change || b_tsid_change || b_dvb_change ||
b_network_change || b_service_name_change || b_remap_change )
{
msg_Dbg( NULL, "change %s%s%s%s%s%s%s",
b_sid_change ? "sid " : "",
b_pid_change ? "pid " : "",
b_tsid_change ? "tsid " : "",
b_dvb_change ? "dvb " : "",
b_network_change ? "network " : "",
b_service_name_change ? "service_name " : "",
b_remap_change ? "remap " : "" );
}
if ( b_sid_change || b_remap_change )
{
NewSDT( p_output );
NewNIT( p_output );
NewPAT( p_output );
NewPMT( p_output );
}
else
{
if ( b_tsid_change )
{
NewSDT( p_output );
NewNIT( p_output );
NewPAT( p_output );
}
else if ( b_dvb_change )
{
NewNIT( p_output );
NewPAT( p_output );
}
else if ( b_network_change )
NewNIT( p_output );
if ( !b_tsid_change && (b_service_name_change || b_epg_change) )
NewSDT( p_output );
if ( b_pid_change )
NewPMT( p_output );
}
}
/*****************************************************************************
* SetDTS
*****************************************************************************/
static void SetDTS( block_t *p_list )
{
int i_nb_ts = 0, i;
mtime_t i_duration;
block_t *p_ts = p_list;
while ( p_ts != NULL )
{
i_nb_ts++;
p_ts = p_ts->p_next;
}
/* We suppose the stream is CBR, at least between two consecutive read().
* This is especially true in budget mode */
if ( i_last_dts == -1 )
i_duration = 0;
else
i_duration = i_wallclock - i_last_dts;
p_ts = p_list;
i = i_nb_ts - 1;
while ( p_ts != NULL )
{
p_ts->i_dts = i_wallclock - i_duration * i / i_nb_ts;
i--;
p_ts = p_ts->p_next;
}
i_last_dts = i_wallclock;
}
/*****************************************************************************
* SetPID/UnsetPID
*****************************************************************************/
static void SetPID( uint16_t i_pid )
{
p_pids[i_pid].i_refcount++;