/src/vlc/modules/demux/mpeg/ts_si.c

Source
/*****************************************************************************
 * ts_psi_eit.c : TS demuxer SI handling
 *****************************************************************************
 * Copyright (C) 2014-2016 - VideoLAN Authors
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation; either version 2.1 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 Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *****************************************************************************/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif

#include <vlc_common.h>
#include <vlc_demux.h>
#include <vlc_meta.h>
#include <vlc_epg.h>
#include <vlc_charset.h>   /* FromCharset, for EIT */
#include <vlc_input.h>

#ifndef _DVBPSI_DVBPSI_H_
 #include <dvbpsi/dvbpsi.h>
#endif
#include <dvbpsi/demux.h>
#include <dvbpsi/descriptor.h>
#include <dvbpsi/sdt.h>
#include <dvbpsi/eit.h> /* EIT support */
#include <dvbpsi/tot.h> /* TDT support */
#include <dvbpsi/dr.h>
#include <dvbpsi/psi.h>
#include "../../mux/mpeg/dvbpsi_compat.h" /* dvbpsi_messages */

#include "ts_si.h"
#include "ts_arib.h"
#include "ts_decoders.h"

#include "ts_pid.h"
#include "ts_streams_private.h"
#include "ts.h"
#include "../dvb-text.h"

#ifdef HAVE_ARIBB24
 #include <aribb24/decoder.h>
#endif

#include <time.h>
#include <assert.h>
#include <limits.h>

struct ts_si_context_t
{
    dvbpsi_t *p_handle;
    int       i_version;
};

#ifndef SI_DEBUG_EIT
 #define SI_DEBUG_TIMESHIFT(t)
#else
 static time_t i_eit_debug_offset = 0;
 #define SI_DEBUG_TIMESHIFT(t) \
    do {\
        if( i_eit_debug_offset == 0 )\
            i_eit_debug_offset = time(NULL) - t;\
        t = t + i_eit_debug_offset;\
    } while(0);
#endif


static void SINewTableCallBack( dvbpsi_t *h, uint8_t i_table_id,
                                uint16_t i_extension, void *p_pid_cbdata );

void ts_si_Packet_Push( ts_pid_t *p_pid, const uint8_t *p_pktbuffer )
{
    if( likely(p_pid->type == TYPE_SI) &&
        dvbpsi_decoder_present( p_pid->u.p_si->p_ctx->p_handle ) )
        dvbpsi_packet_push( p_pid->u.p_si->p_ctx->p_handle, (uint8_t *) p_pktbuffer );
}

static char *EITConvertToUTF8( demux_t *p_demux,
                               const unsigned char *psz_instring,
                               size_t i_length,
                               bool b_broken )
{
    demux_sys_t *p_sys = p_demux->p_sys;
#ifdef HAVE_ARIBB24
    if( p_sys->standard == TS_STANDARD_ARIB )
    {
        if ( !p_sys->arib.p_instance )
            p_sys->arib.p_instance = arib_instance_new( p_demux );
        if ( !p_sys->arib.p_instance )
            return NULL;
        arib_decoder_t *p_decoder = arib_get_decoder( p_sys->arib.p_instance );
        if ( !p_decoder )
            return NULL;

        char *psz_outstring = NULL;
        size_t i_out;

        i_out = i_length * 4;
        psz_outstring = (char*) calloc( i_out + 1, sizeof(char) );
        if( !psz_outstring )
            return NULL;

        arib_initialize_decoder( p_decoder );
        i_out = arib_decode_buffer( p_decoder, psz_instring, i_length,
                                    psz_outstring, i_out );
        arib_finalize_decoder( p_decoder );

        return psz_outstring;
    }
#else
    VLC_UNUSED(p_sys);
#endif
    /* Deal with no longer broken providers (no switch byte
      but sending ISO_8859-1 instead of ISO_6937) without
      removing them from the broken providers table
      (keep the entry for correctly handling recorded TS).
    */
    b_broken = b_broken && i_length && *psz_instring > 0x20;

    if( b_broken )
        return FromCharset( "ISO_8859-1", psz_instring, i_length );
    return vlc_from_EIT( psz_instring, i_length );
}

#define attach_SI_decoders(i_pid, name, member) do {\
    ts_pid_t *pid = GetPID(p_sys, i_pid);\
    if ( PIDSetup( p_demux, TYPE_SI, pid, NULL ) )\
    {\
        if( !ts_attach_SI_Tables_Decoders( pid ) )\
        {\
            msg_Err( p_demux, "Can't attach SI table decoders for pid %d", i_pid );\
            PIDRelease( p_demux, pid );\
        }\
        else\
        {\
            sdt->u.p_si->member = pid;\
            SetPIDFilter( p_demux->p_sys, pid, true );\
            msg_Dbg( p_demux, "  * pid=%d listening for "name, i_pid );\
        }\
    }\
    } while(0)\

static void SDTCallBack( void *opaque, dvbpsi_sdt_t *p_sdt )
{
    demux_t              *p_demux = opaque;
    demux_sys_t          *p_sys = p_demux->p_sys;
    ts_pid_t             *sdt = GetPID(p_sys, TS_SI_SDT_PID);
    ts_pat_t             *p_pat = ts_pid_Get(&p_sys->pids, 0)->u.p_pat;
    dvbpsi_sdt_service_t *p_srv;

    msg_Dbg( p_demux, "SDTCallBack called" );

    if( p_sys->es_creation != CREATE_ES ||
       !p_sdt->b_current_next ||
        p_sdt->i_version == sdt->u.p_si->p_ctx->i_version )
    {
        dvbpsi_sdt_delete( p_sdt );
        return;
    }

    /* First callback */
    if( sdt->u.p_si->p_ctx->i_version == -1 )
    {
        attach_SI_decoders( TS_SI_EIT_PID, "EIT", eitpid );
        attach_SI_decoders( TS_SI_TDT_PID, "TDT", tdtpid );
        if( p_sys->standard == TS_STANDARD_ARIB )
            attach_SI_decoders( TS_ARIB_CDT_PID, "CDT", cdtpid );
    }


    msg_Dbg( p_demux, "new SDT ts_id=%"PRIu16" version=%"PRIu8" current_next=%d "
             "network_id=%"PRIu16,
             p_sdt->i_extension,
             p_sdt->i_version, p_sdt->b_current_next,
             p_sdt->i_network_id );

    p_sys->b_broken_charset = false;

    for( p_srv = p_sdt->p_first_service; p_srv; p_srv = p_srv->p_next )
    {
        ts_pmt_t            *p_pmt = ts_pat_Get_pmt( p_pat, p_srv->i_service_id );
        vlc_meta_t          *p_meta;
        dvbpsi_descriptor_t *p_dr;

        const char *psz_type = NULL;
        const char *psz_status = NULL;

        msg_Dbg( p_demux, "  * service id=%"PRIu16" eit schedule=%d present=%d "
                 "running=%"PRIu8" free_ca=%d",
                 p_srv->i_service_id, p_srv->b_eit_schedule,
                 p_srv->b_eit_present, p_srv->i_running_status,
                 p_srv->b_free_ca );

        if( p_sys->vdr.i_service && p_srv->i_service_id != p_sys->vdr.i_service )
        {
            msg_Dbg( p_demux, "  * service id=%d skipped (not declared in vdr header)",
                     p_sys->vdr.i_service );
            continue;
        }

        p_meta = vlc_meta_New();
        for( p_dr = p_srv->p_first_descriptor; p_dr; p_dr = p_dr->p_next )
        {
            if( p_dr->i_tag == 0x48 )
            {
                static const char *ppsz_type[17] = {
                    "Reserved",
                    "Digital television service",
                    "Digital radio sound service",
                    "Teletext service",
                    "NVOD reference service",
                    "NVOD time-shifted service",
                    "Mosaic service",
                    "PAL coded signal",
                    "SECAM coded signal",
                    "D/D2-MAC",
                    "FM Radio",
                    "NTSC coded signal",
                    "Data broadcast service",
                    "Reserved for Common Interface Usage",
                    "RCS Map (see EN 301 790 [35])",
                    "RCS FLS (see EN 301 790 [35])",
                    "DVB MHP service"
                };
                dvbpsi_service_dr_t *pD = dvbpsi_DecodeServiceDr( p_dr );
                char *str1 = NULL;
                char *str2 = NULL;

                /* Workarounds for broadcasters with broken EPG */

                if( p_sdt->i_network_id == 133 )
                    p_sys->b_broken_charset = true;  /* SKY DE & BetaDigital use ISO8859-1 */

                /* List of providers using ISO8859-1 */
                static const char ppsz_broken_providers[][8] = {
                    "CSAT",     /* CanalSat FR */
                    "GR1",      /* France televisions */
                    "MULTI4",   /* NT1 */
                    "MR5",      /* France 2/M6 HD */
                    ""
                };
                for( int i = 0; *ppsz_broken_providers[i]; i++ )
                {
                    const size_t i_length = strlen(ppsz_broken_providers[i]);
                    if( pD->i_service_provider_name_length == i_length &&
                        !strncmp( (char *)pD->i_service_provider_name, ppsz_broken_providers[i], i_length ) )
                        p_sys->b_broken_charset = true;
                }

                /* FIXME: Digital+ ES also uses ISO8859-1 */

                str1 = EITConvertToUTF8(p_demux,
                                        pD->i_service_provider_name,
                                        pD->i_service_provider_name_length,
                                        p_sys->b_broken_charset );
                str2 = EITConvertToUTF8(p_demux,
                                        pD->i_service_name,
                                        pD->i_service_name_length,
                                        p_sys->b_broken_charset );

                msg_Dbg( p_demux, "    - type=%"PRIu8" provider=%s name=%s",
                         pD->i_service_type, str1, str2 );

                if( !str2 || strcmp( "Service01", str2 ) ) /* Skip bogus libav/ffmpeg SDT */
                {
                    vlc_meta_SetTitle( p_meta, str2 );
                    vlc_meta_SetPublisher( p_meta, str1 );
                    if( pD->i_service_type >= 0x01 && pD->i_service_type <= 0x10 )
                        psz_type = ppsz_type[pD->i_service_type];
                }
                free( str1 );
                free( str2 );
            }
            else if( p_sys->standard == TS_STANDARD_ARIB &&
                     p_dr->i_tag == TS_ARIB_DR_LOGO_TRANSMISSION && p_pmt )
            {
                ts_arib_logo_dr_t *p_logodr = ts_arib_logo_dr_Decode( p_dr->p_data, p_dr->i_length );
                if( p_logodr )
                {
                    if( p_logodr->i_transmission_mode == 0 )
                    {
                        p_pmt->arib.i_logo_id = p_logodr->i_logo_id;
                        p_pmt->arib.i_download_id = p_logodr->i_download_data_id;
                    }
                    else if( p_logodr->i_transmission_mode == 1 )
                    {
                        p_pmt->arib.i_logo_id = p_logodr->i_logo_id;
                    }
                    else /* TODO simple logo identifier */
                    {

                    }

                    if( p_pmt->arib.i_logo_id > -1 )
                    {
                        char *psz_name;
                        if( asprintf( &psz_name, "attachment://onid[%"PRIx16"]_channel_logo_id[%"PRIx16"]q[%d]",
                                      p_sdt->i_network_id, p_logodr->i_logo_id,
                                      TS_ARIB_LOGO_TYPE_HD_LARGE ) > -1 )
                        {
                            vlc_meta_SetArtURL( p_meta, psz_name );
                            vlc_meta_SetExtra( p_meta, "ARTURL", psz_name );
                            free( psz_name );
                        }
                    }

                    ts_arib_logo_dr_Delete( p_logodr );
                }
            }
        }

        if( p_srv->i_running_status >= 0x01 && p_srv->i_running_status <= 0x04 )
        {
            static const char *ppsz_status[5] = {
                "Unknown",
                "Not running",
                "Starts in a few seconds",
                "Pausing",
                "Running"
            };
            psz_status = ppsz_status[p_srv->i_running_status];
        }

        if( psz_type )
            vlc_meta_SetExtra( p_meta, "Type", psz_type );
        if( psz_status )
            vlc_meta_SetExtra( p_meta, "Status", psz_status );

        es_out_Control( p_demux->out, ES_OUT_SET_GROUP_META,
                        p_srv->i_service_id, p_meta );
        vlc_meta_Delete( p_meta );
    }

    sdt->u.p_si->p_ctx->i_version = p_sdt->i_version;
    dvbpsi_sdt_delete( p_sdt );
}

static void EITDecodeMjd( int i_mjd, int *p_y, int *p_m, int *p_d )
{
    const int yp = (int)( ( (double)i_mjd - 15078.2)/365.25 );
    const int mp = (int)( ((double)i_mjd - 14956.1 - (int)(yp * 365.25)) / 30.6001 );
    const int c = ( mp == 14 || mp == 15 ) ? 1 : 0;

    *p_y = 1900 + yp + c*1;
    *p_m = mp - 1 - c*12;
    *p_d = i_mjd - 14956 - (int)(yp*365.25) - (int)(mp*30.6001);
}
#define CVT_FROM_BCD(v) ((((v) >> 4)&0xf)*10 + ((v)&0xf))
static int64_t EITConvertStartTime( uint64_t i_date )
{
    const int i_mjd = i_date >> 24;
    struct tm tm;

    tm.tm_hour = CVT_FROM_BCD(i_date >> 16);
    tm.tm_min  = CVT_FROM_BCD(i_date >>  8);
    tm.tm_sec  = CVT_FROM_BCD(i_date      );

    /* if all 40 bits are 1, the start is unknown */
    if( i_date == UINT64_C(0xffffffffff) )
        return -1;

    EITDecodeMjd( i_mjd, &tm.tm_year, &tm.tm_mon, &tm.tm_mday );
    tm.tm_year -= 1900;
    tm.tm_mon--;
    tm.tm_isdst = 0;

    return timegm( &tm );
}
static int EITConvertDuration( uint32_t i_duration )
{
    return CVT_FROM_BCD(i_duration >> 16) * 3600 +
           CVT_FROM_BCD(i_duration >> 8 ) * 60 +
           CVT_FROM_BCD(i_duration      );
}
#undef CVT_FROM_BCD

static void TDTCallBack( void *opaque, dvbpsi_tot_t *p_tdt )
{
    demux_t            *p_demux = opaque;
    demux_sys_t        *p_sys = p_demux->p_sys;


    p_sys->i_network_time = EITConvertStartTime( p_tdt->i_utc_time );
    p_sys->i_network_time_update = time(NULL);
    if( p_sys->standard == TS_STANDARD_ARIB )
    {
        /* All ARIB-B10 times are in JST time, where DVB is UTC. (spec being a fork)
           DVB TOT should include DTS offset in descriptor 0x58 (including DST),
           but as there's no DST in JAPAN (since Showa 27/1952)
           and considering that no-one seems to send TDT or desc 0x58,
           falling back on fixed offset is safe */
        p_sys->i_network_time += 9 * 3600;
    }

    /* Because libdvbpsi is broken and deduplicating timestamp tables,
     * we need to reset it to get next timestamp callback */
    ts_pid_t *pid = ts_pid_Get( &p_sys->pids, TS_SI_TDT_PID );
    dvbpsi_decoder_reset( pid->u.p_si->p_ctx->p_handle->p_decoder, true );
    dvbpsi_tot_delete(p_tdt);

    es_out_Control( p_demux->out, ES_OUT_SET_EPG_TIME, (int64_t) p_sys->i_network_time );
}

static void EITExtractDrDescItems( demux_t *p_demux, const dvbpsi_extended_event_dr_t *pE,
                                   vlc_epg_event_t *p_evt )
{
    demux_sys_t *p_sys = p_demux->p_sys;

    if( pE->i_entry_count )
    {
        char **ppsz_prev = NULL;
        /* Continued items from previous descriptor (ARIB) */
        if( p_evt->i_description_items > 0 )
            ppsz_prev = &p_evt->description_items[p_evt->i_description_items - 1].psz_value;

        for( int i = 0; i < pE->i_entry_count; i++ )
        {
            char *psz_key = NULL;
            /* Continued items have NULL key */
            const bool b_appending = ( pE->i_item_description_length[i] == 0 );
            if( !b_appending )
            {
                void *p_realloc = NULL;
                if( (size_t)p_evt->i_description_items < SIZE_MAX / sizeof(*p_evt->description_items) )
                {
                    p_realloc = realloc( p_evt->description_items,
                                        (p_evt->i_description_items + 1) *
                                         sizeof(*p_evt->description_items) );
                }
                if( !p_realloc )
                {
                    free( psz_key );
                    break;
                }
                p_evt->description_items = p_realloc;

                psz_key = EITConvertToUTF8( p_demux,
                                            pE->i_item_description[i],
                                            pE->i_item_description_length[i],
                                            p_sys->b_broken_charset );
                if( !psz_key )
                {
                    ppsz_prev = NULL;
                    continue;
                }
            }
            else if( ppsz_prev == NULL )
                continue;

            char *psz_itm = EITConvertToUTF8( p_demux,
                                              pE->i_item[i], pE->i_item_length[i],
                                              p_sys->b_broken_charset );
            if( !psz_itm )
            {
                free( psz_key );
                ppsz_prev = NULL;
                continue;
            }

            msg_Dbg( p_demux, "       - desc='%s' item='%s'",
                     psz_key ? psz_key : "(null)", psz_itm );
            if( b_appending )
            {
                /* Continued items */
                size_t i_total = strlen(*ppsz_prev) + strlen(psz_itm) + 1;
                char *psz_realloc = realloc( *ppsz_prev, i_total );
                if( psz_realloc )
                {
                    *ppsz_prev = psz_realloc;
                    strcat( *ppsz_prev, psz_itm );
                }
                free( psz_itm );
            }
            else
            {
                p_evt->description_items[p_evt->i_description_items].psz_key = psz_key;
                p_evt->description_items[p_evt->i_description_items].psz_value = psz_itm;
                ppsz_prev = &p_evt->description_items[p_evt->i_description_items].psz_value;
                p_evt->i_description_items++;
            }
        }
    }
}

static void EITCallBack( void *opaque, dvbpsi_eit_t *p_eit )
{
    demux_t            *p_demux = opaque;
    demux_sys_t        *p_sys = p_demux->p_sys;
    const dvbpsi_eit_event_t *p_evt;
    uint64_t i_runevt = 0;
    uint64_t i_fallbackevt = 0;
    vlc_epg_t *p_epg;

    msg_Dbg( p_demux, "EITCallBack called" );
    if( !p_eit->b_current_next )
    {
        dvbpsi_eit_delete( p_eit );
        return;
    }

    msg_Dbg( p_demux, "new EIT service_id=%"PRIu16" version=%"PRIu8" current_next=%d "
             "ts_id=%"PRIu16" network_id=%"PRIu16" segment_last_section_number=%"PRIu8" "
             "last_table_id=%"PRIu8,
             p_eit->i_extension,
             p_eit->i_version, p_eit->b_current_next,
             p_eit->i_ts_id, p_eit->i_network_id,
             p_eit->i_segment_last_section_number, p_eit->i_last_table_id );

    /* Use table ID for segmenting our EPG tables updates. 1 table id has 256 sections which
     * represents 8 segments of 32 sections each. Thus a max of 24 hours per table ID
     * (Should be even better with tableid+segmentid compound if dvbpsi would export segment id)
     * see TS 101 211, 4.1.4.2.1 */
    p_epg = vlc_epg_New( p_eit->i_table_id, p_eit->i_extension );
    if( !p_epg )
    {
        dvbpsi_eit_delete( p_eit );
        return;
    }

    for( p_evt = p_eit->p_first_event; p_evt; p_evt = p_evt->p_next )
    {
        dvbpsi_descriptor_t *p_dr;
        int64_t i_start;
        int i_duration;

        i_start = EITConvertStartTime( p_evt->i_start_time );
        SI_DEBUG_TIMESHIFT(i_start);
        i_duration = EITConvertDuration( p_evt->i_duration );

        /* We have to fix ARIB-B10 as all timestamps are JST */
        if( p_sys->standard == TS_STANDARD_ARIB )
        {
            /* See comments on TDT callback */
            i_start += 9 * 3600;
        }

        msg_Dbg( p_demux, "  * event id=%"PRIu16" start_time:%"PRId64" duration=%d "
                          "running=%"PRIu8" free_ca=%d",
                 p_evt->i_event_id, i_start, i_duration,
                 p_evt->i_running_status, p_evt->b_free_ca );

        /* */
        if( i_start <= 0 )
            continue;

        vlc_epg_event_t *p_epgevt = vlc_epg_event_New( p_evt->i_event_id,
                                                       i_start, i_duration );
        if( !p_epgevt )
            continue;

        if( !vlc_epg_AddEvent( p_epg, p_epgevt ) )
        {
            vlc_epg_event_Delete( p_epgevt );
            continue;
        }

        for( p_dr = p_evt->p_first_descriptor; p_dr; p_dr = p_dr->p_next )
        {
            switch(p_dr->i_tag)
            {
            case 0x4d:
            {
                dvbpsi_short_event_dr_t *pE = dvbpsi_DecodeShortEventDr( p_dr );

                /* Only take first description, as we don't handle language-info
                   for epg atm*/
                if( pE )
                {
                    char **ppsz = &p_epgevt->psz_name;
                    free( *ppsz );
                    *ppsz = EITConvertToUTF8( p_demux,
                                              pE->i_event_name, pE->i_event_name_length,
                                              p_sys->b_broken_charset );
                    ppsz = &p_epgevt->psz_short_description;
                    free( *ppsz );
                    *ppsz = EITConvertToUTF8( p_demux,
                                              pE->i_text, pE->i_text_length,
                                              p_sys->b_broken_charset );
                    msg_Dbg( p_demux, "    - short event lang=%3.3s '%s' : '%s'",
                             pE->i_iso_639_code, p_epgevt->psz_name, *ppsz );
                }
            }
                break;

            case 0x4e:
            {
                dvbpsi_extended_event_dr_t *pE = dvbpsi_DecodeExtendedEventDr( p_dr );
                if( pE )
                {
                    msg_Dbg( p_demux, "    - extended event lang=%3.3s [%"PRIu8"/%"PRIu8"]",
                             pE->i_iso_639_code,
                             pE->i_descriptor_number, pE->i_last_descriptor_number );

                    if( pE->i_text_length > 0 )
                    {
                        char *psz_text = EITConvertToUTF8( p_demux,
                                                           pE->i_text, pE->i_text_length,
                                                           p_sys->b_broken_charset );
                        if( psz_text )
                        {
                            msg_Dbg( p_demux, "       - text='%s'", psz_text );

                            if( p_epgevt->psz_description )
                            {
                                size_t i_total = strlen( p_epgevt->psz_description ) + strlen( psz_text ) + 1;
                                char *psz_realloc = realloc( p_epgevt->psz_description, i_total );
                                if( psz_realloc )
                                {
                                    p_epgevt->psz_description = psz_realloc;
                                    strcat( psz_realloc, psz_text );
                                }
                                free( psz_text );
                            }
                            else
                            {
                                p_epgevt->psz_description = psz_text;
                            }
                        }
                    }

                    EITExtractDrDescItems( p_demux, pE, p_epgevt );
                }
            }
                break;

            case 0x55:
            {
                dvbpsi_parental_rating_dr_t *pR = dvbpsi_DecodeParentalRatingDr( p_dr );
                if ( pR )
                {
                    int i_min_age = 0;
                    for ( int i = 0; i < pR->i_ratings_number; i++ )
                    {
                        const dvbpsi_parental_rating_t *p_rating = & pR->p_parental_rating[ i ];
                        if ( p_rating->i_rating > 0x00 && p_rating->i_rating <= 0x0F )
                        {
                            if ( p_rating->i_rating + 3 > i_min_age )
                                i_min_age = p_rating->i_rating + 3;
                            msg_Dbg( p_demux, "    - parental control set to %d years",
                                     i_min_age );
                        }
                    }
                    p_epgevt->i_rating = i_min_age;
                }
            }
                break;

            default:
                msg_Dbg( p_demux, "    - event unknown dr 0x%"PRIx8"(%"PRIu8")", p_dr->i_tag, p_dr->i_tag );
                break;
            }
        }

        switch ( p_evt->i_running_status )
        {
            case TS_SI_RUNSTATUS_RUNNING:
                if( i_runevt == 0 )
                    i_runevt = i_start;
                break;
            case TS_SI_RUNSTATUS_UNDEFINED:
            {
                if( i_fallbackevt == 0 &&
                    i_start <= p_sys->i_network_time &&
                    p_sys->i_network_time < i_start + i_duration )
                    i_fallbackevt = i_start;
                break;
            }
            default:
                break;
        }
    }

    /* Update "now playing" field */
    if( i_runevt || i_fallbackevt )
        vlc_epg_SetCurrent( p_epg, (i_runevt) ? i_runevt : i_fallbackevt );

    if( p_epg->i_event > 0 )
    {
        if( p_epg->b_present && p_epg->p_current )
        {
            ts_pat_t *p_pat = ts_pid_Get(&p_sys->pids, 0)->u.p_pat;
            ts_pmt_t *p_pmt = ts_pat_Get_pmt(p_pat, p_eit->i_extension);
            if(p_pmt)
            {
                p_pmt->eit.i_event_start = p_epg->p_current->i_start;
                p_pmt->eit.i_event_length = p_epg->p_current->i_duration;
            }
        }
        p_epg->b_present = (p_eit->i_table_id == 0x4e);
        es_out_Control( p_demux->out, ES_OUT_SET_GROUP_EPG, p_eit->i_extension, p_epg );
    }
    vlc_epg_Delete( p_epg );

    dvbpsi_eit_delete( p_eit );
}

static void ARIB_CDT_RawCallback( dvbpsi_t *p_handle, const dvbpsi_psi_section_t* p_section,
                                  void *p_cdtpid )
{
    VLC_UNUSED(p_cdtpid);
    demux_t *p_demux = (demux_t *) p_handle->p_sys;
    demux_sys_t *p_sys = p_demux->p_sys;
    const ts_pat_t *p_pat = GetPID(p_sys, 0)->u.p_pat;

    while( p_section )
    {
        const uint8_t *p_data = p_section->p_payload_start;
        size_t i_data = p_section->p_payload_end - p_section->p_payload_start;

        if( i_data < (6U + 7 + 1) || p_data[2] != TS_ARIB_CDT_DATA_TYPE_LOGO )
            continue;

        uint16_t i_onid = (p_data[0] << 8) | p_data[1];
        uint16_t i_dr_len = ((p_data[3] & 0x0F) << 4) | p_data[4];
        if( i_data < i_dr_len + (6U + 7 + 1) )
            continue;

        /* STD-B21 A.5.4 (Japanese spec only) */

        const uint8_t *p_dmb = &p_data[5 + i_dr_len];
        size_t i_dmb = i_data - 5 - i_dr_len;

        while( i_dmb > 7 )
        {
            uint8_t i_logo_type = p_dmb[0];
            uint16_t i_logo_id = ((p_dmb[1] & 0x01) << 8) | p_dmb[2];
            uint16_t i_size = (p_dmb[5] << 8) | p_dmb[6];

            if( 7U + i_size > i_dmb )
                break;

            for( int i=0; i<p_pat->programs.i_size; i++ )
            {
                ts_pmt_t *p_pmt = p_pat->programs.p_elems[i]->u.p_pmt;
                if( p_pmt->arib.i_logo_id == i_logo_id && i_logo_type == TS_ARIB_LOGO_TYPE_HD_LARGE )
                {
                    char *psz_name;
                    if( asprintf( &psz_name, "onid[%"PRIx16"]_channel_logo_id[%"PRIx16"]q[%d]",
                                  i_onid, i_logo_id, i_logo_type ) > -1 )
                    {
                        uint8_t *p_png; size_t i_png;
                        if( !vlc_dictionary_has_key( &p_sys->attachments, psz_name ) &&
                            ts_arib_inject_png_palette( &p_dmb[7], i_size, &p_png, &i_png ) )
                        {
                            input_attachment_t *p_att = vlc_input_attachment_New(
                                                        psz_name, "image/png", NULL, p_png, i_png );
                            if( p_att )
                            {
                                vlc_dictionary_insert( &p_sys->attachments, psz_name, p_att );
                                p_sys->updates |= INPUT_UPDATE_META;
                            }
                            free( p_png );
                        }
                        free( psz_name );
                    }
                }
            }

            i_dmb -= 7 + i_size;
            p_dmb += 7 + i_size;
        }

        p_section = p_section->p_next;
    }
}

static void SINewTableCallBack( dvbpsi_t *h, uint8_t i_table_id,
                                uint16_t i_extension, void *p_pid_cbdata )
{
    assert( h );
    ts_pid_t *p_pid = (ts_pid_t *) p_pid_cbdata;
    demux_t *p_demux = (demux_t *) h->p_sys;
#if 0
    msg_Dbg( p_demux, "SINewTableCallback: table 0x%"PRIx8"(%"PRIu16") ext=0x%"PRIx16"(%"PRIu16")",
             i_table_id, i_table_id, i_extension, i_extension );
#endif
    if( p_pid->i_pid == TS_SI_SDT_PID && i_table_id == 0x42 )
    {
        if( !dvbpsi_sdt_attach( h, i_table_id, i_extension, SDTCallBack, p_demux ) )
            msg_Err( p_demux, "SINewTableCallback: failed attaching SDTCallback" );
    }
    else if( p_pid->i_pid == TS_SI_EIT_PID &&
             ( i_table_id == 0x4e || /* Current/Following */
               (i_table_id >= 0x50 && i_table_id <= 0x5f) ) ) /* Schedule */
    {
        if( !dvbpsi_eit_attach( h, i_table_id, i_extension,
                                EITCallBack, p_demux ) )
            msg_Err( p_demux, "SINewTableCallback: failed attaching EITCallback" );
    }
    else if( p_pid->i_pid == TS_SI_TDT_PID &&
            (i_table_id == TS_SI_TDT_TABLE_ID || i_table_id == TS_SI_TOT_TABLE_ID) )
    {
        if( !dvbpsi_tot_attach( h, i_table_id, i_extension, TDTCallBack, p_demux ) )
            msg_Err( p_demux, "SINewTableCallback: failed attaching TDTCallback" );
    }
    else if( p_pid->i_pid == TS_ARIB_CDT_PID && i_table_id == TS_ARIB_CDT_TABLE_ID )
    {
        if( dvbpsi_demuxGetSubDec( (dvbpsi_demux_t *) h->p_decoder, i_table_id, i_extension ) == NULL &&
            !ts_dvbpsi_AttachRawSubDecoder( h, i_table_id, i_extension, ARIB_CDT_RawCallback, p_pid ) )
            msg_Err( p_demux, "SINewTableCallback: failed attaching ARIB_CDT_RawCallback" );
    }
}

bool ts_attach_SI_Tables_Decoders( ts_pid_t *p_pid )
{
    if( p_pid->type != TYPE_SI )
        return false;

    if( dvbpsi_decoder_present( p_pid->u.p_si->p_ctx->p_handle ) )
        return true;

    return dvbpsi_AttachDemux( p_pid->u.p_si->p_ctx->p_handle, SINewTableCallBack, p_pid );
}

void ts_si_context_Delete( ts_si_context_t *p_ctx )
{
    if( dvbpsi_decoder_present( p_ctx->p_handle ) )
        dvbpsi_DetachDemux( p_ctx->p_handle );
    dvbpsi_delete( p_ctx->p_handle );
    free( p_ctx );
}

ts_si_context_t * ts_si_context_New( demux_t *p_demux )
{
    ts_si_context_t *p_ctx = malloc(sizeof(*p_ctx));
    if(likely(p_ctx))
    {
        p_ctx->p_handle = dvbpsi_new( &dvbpsi_messages, DVBPSI_MSG_DEBUG );
        if( !p_ctx->p_handle )
        {
            free( p_ctx );
            return NULL;
        }
        p_ctx->p_handle->p_sys = (void *) p_demux;
        p_ctx->i_version = -1;
    }
    return p_ctx;
}

Coverage Report

Created: 2026-05-30 08:50