////////////////////////////////////////////////////////////// /// /// /// si_parser.c: main parsing functions of libsi /// /// /// ////////////////////////////////////////////////////////////// // $Revision: 1.2 $ // $Date: 2001/06/25 19:39:00 $ // $Author: hakenes $ // // (C) 2001 Rolf Hakenes , under the GNU GPL. // // libsi 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, or (at your option) // any later version. // // libsi 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 may have received a copy of the GNU General Public License // along with libsi; see the file COPYING. If not, write to the // Free Software Foundation, Inc., 59 Temple Place - Suite 330, // Boston, MA 02111-1307, USA. #include #include #include #include "../liblx/liblx.h" #include "libsi.h" #include "si_tables.h" struct LIST *siParsePAT (u_char *Buffer) { pat_t *Pat; pat_prog_t *PatProgram; u_char *Ptr; u_int SectionLength; int TransportStreamID; int PatVersion; struct Program *Program; struct LIST *ProgramList = NULL; if (!Buffer) return NULL; Pat = (pat_t *) Buffer; Ptr = Buffer; if (Pat->table_id != TID_PAT) { // fprintf (stderr, "PAT: wrong TID %d\n", Pat->table_id); return NULL; } SectionLength = HILO (Pat->section_length) + 3 - PAT_LEN - 4; if (crc32 (Ptr, HILO (Pat->section_length) + 3)) return (NULL); TransportStreamID = HILO (Pat->transport_stream_id); PatVersion = Pat->version_number; Ptr += PAT_LEN; while (SectionLength > 0) { PatProgram = (pat_prog_t *) Ptr; CreateProgram (Program, HILO (PatProgram->program_number), TransportStreamID, HILO (PatProgram->network_pid), PatVersion); if (!ProgramList) ProgramList = xNewList (NULL); xAddTail (ProgramList, Program); SectionLength -= PAT_PROG_LEN; Ptr += PAT_PROG_LEN; } return (ProgramList); } struct Pid *siParsePMT (u_char *Buffer) { pmt_t *Pmt; pmt_info_t *PmtInfo; u_char *Ptr; u_int SectionLength, ProgramInfoLength, StreamLength, LoopLength; int ProgramID; int PcrID; int PmtVersion; struct Pid *Pid; struct PidInfo *PidInfo; if (!Buffer) return NULL; Pmt = (pmt_t *) Buffer; Ptr = Buffer; if (Pmt->table_id != TID_PMT) { // fprintf (stderr, "PMT: wrong TID %d\n", Pmt->table_id); return NULL; } SectionLength = HILO (Pmt->section_length) + 3 - 4; if (crc32 (Ptr, HILO (Pmt->section_length) + 3)) return (NULL); ProgramInfoLength = HILO (Pmt->program_info_length); StreamLength = SectionLength - ProgramInfoLength - PMT_LEN; ProgramID = HILO (Pmt->program_number); PmtVersion = Pmt->version_number; PcrID = HILO (Pmt->PCR_PID); Ptr += PMT_LEN; CreatePid (Pid, ProgramID, PcrID, PmtVersion); siParseDescriptors (Pid->Descriptors, Ptr, ProgramInfoLength, Pmt->table_id); Ptr += ProgramInfoLength; while (StreamLength > 0) { PmtInfo = (pmt_info_t *) Ptr; CreatePidInfo (PidInfo, PmtInfo->stream_type, HILO (PmtInfo->elementary_PID)); LoopLength = HILO (PmtInfo->ES_info_length); Ptr += PMT_INFO_LEN; siParseDescriptors (PidInfo->Descriptors, Ptr, LoopLength, Pmt->table_id); xAddTail (Pid->InfoList, PidInfo); StreamLength -= LoopLength + PMT_INFO_LEN; Ptr += LoopLength; } return (Pid); } struct LIST *siParseSDT (u_char *Buffer) { sdt_t *Sdt; sdt_descr_t *SdtDescriptor; u_char *Ptr; u_int SectionLength, LoopLength; int TransportStreamID; int SdtVersion; int OriginalNetworkID; struct Service *Service; struct LIST *ServiceList = NULL; if (!Buffer) return NULL; Sdt = (sdt_t *) Buffer; Ptr = Buffer; if (Sdt->table_id != TID_SDT_ACT && Sdt->table_id != TID_SDT_OTH) { // fprintf (stderr, "SDT: wrong TID %d\n", Sdt->table_id); return NULL; } SectionLength = HILO (Sdt->section_length) + 3 - SDT_LEN - 4; if (crc32 (Ptr, HILO (Sdt->section_length) + 3)) return (NULL); TransportStreamID = HILO (Sdt->transport_stream_id); SdtVersion = Sdt->version_number; OriginalNetworkID = HILO (Sdt->original_network_id); Ptr += SDT_LEN; while (SectionLength > 0) { SdtDescriptor = (sdt_descr_t *) Ptr; CreateService (Service, HILO (SdtDescriptor->service_id), TransportStreamID, OriginalNetworkID, SdtVersion, SdtDescriptor->free_ca_mode ? CONDITIONAL_ACCESS : FREE_TO_AIR); switch (SdtDescriptor->running_status) { case 0x01: SetRunningStatus (Service->Status, RUNNING_STATUS_NOT_RUNNING); break; case 0x02: SetRunningStatus (Service->Status, RUNNING_STATUS_AWAITING); break; case 0x03: SetRunningStatus (Service->Status, RUNNING_STATUS_PAUSING); break; case 0x04: default: SetRunningStatus (Service->Status, RUNNING_STATUS_RUNNING); break; } if (SdtDescriptor->eit_schedule_flag) SetScheduleFlag (Service->Status); if (SdtDescriptor->eit_present_following_flag) SetPresentFollowing (Service->Status); LoopLength = HILO (SdtDescriptor->descriptors_loop_length); Ptr += SDT_DESCR_LEN; siParseDescriptors (Service->Descriptors, Ptr, LoopLength, Sdt->table_id); if (!ServiceList) ServiceList = xNewList (NULL); xAddTail (ServiceList, Service); SectionLength -= LoopLength + SDT_DESCR_LEN; Ptr += LoopLength; } return (ServiceList); } struct LIST *siParseEIT (u_char *Buffer) { eit_t *Eit; eit_event_t *EitEvent; u_char *Ptr; u_int SectionLength, LoopLength; int ServiceID; int EitVersion; int TransportStreamID; int OriginalNetworkID; struct Event *Event; struct LIST *EventList = NULL; if (!Buffer) return NULL; Eit = (eit_t *) Buffer; Ptr = Buffer; if (Eit->table_id != TID_EIT_ACT && Eit->table_id != TID_EIT_OTH && !(Eit->table_id >= TID_EIT_ACT_SCH && Eit->table_id <= TID_EIT_ACT_SCH + 0x0F) && !(Eit->table_id >= TID_EIT_OTH_SCH && Eit->table_id <= TID_EIT_OTH_SCH + 0x0F)) { // fprintf (stderr, "EIT: wrong TID %d\n", Eit->table_id); return NULL; } SectionLength = HILO (Eit->section_length) + 3 - EIT_LEN - 4; if (crc32 (Ptr, HILO (Eit->section_length) + 3)) return (NULL); ServiceID = HILO (Eit->service_id); TransportStreamID = HILO (Eit->transport_stream_id); EitVersion = Eit->version_number; OriginalNetworkID = HILO (Eit->original_network_id); Ptr += EIT_LEN; while (SectionLength > 0) { struct tm thisTime; int year, month, day; double mjd; EitEvent = (eit_event_t *) Ptr; CreateEvent (Event, HILO (EitEvent->event_id), ServiceID, TransportStreamID, OriginalNetworkID, EitVersion, EitEvent->free_ca_mode ? CONDITIONAL_ACCESS : FREE_TO_AIR); switch (EitEvent->running_status) { case 0x01: SetRunningStatus (Event->Status, RUNNING_STATUS_NOT_RUNNING); break; case 0x02: SetRunningStatus (Event->Status, RUNNING_STATUS_AWAITING); break; case 0x03: SetRunningStatus (Event->Status, RUNNING_STATUS_PAUSING); break; case 0x04: default: SetRunningStatus (Event->Status, RUNNING_STATUS_RUNNING); break; } Event->StartTime = MjdToEpochTime (EitEvent->mjd) + BcdTimeToSeconds (EitEvent->start_time); Event->Duration = BcdTimeToSeconds (EitEvent->duration); LoopLength = HILO (EitEvent->descriptors_loop_length); Ptr += EIT_EVENT_LEN; siParseDescriptors (Event->Descriptors, Ptr, LoopLength, Eit->table_id); if (!EventList) EventList = xNewList (NULL); xAddTail (EventList, Event); SectionLength -= LoopLength + EIT_EVENT_LEN; Ptr += LoopLength; } return (EventList); } time_t siParseTDT (u_char *Buffer) { tdt_t *Tdt; u_char *Ptr; u_int SectionLength; int TdtVersion; time_t CurrentTime; if (!Buffer) return 0; Tdt = (tdt_t *) Buffer; Ptr = Buffer; if (Tdt->table_id != TID_TDT) { // fprintf (stderr, "TDT: wrong TID %d\n", Tdt->table_id); return 0; } SectionLength = HILO (Tdt->section_length) + 3; /* no CRC ?! */ CurrentTime = MjdToEpochTime (Tdt->utc_mjd) + BcdTimeToSeconds (Tdt->utc_time); return (CurrentTime); } void siParseDescriptors (struct LIST *Descriptors, u_char *Buffer, u_int Length, u_char TableID) { u_int DescriptorLength; u_char *Ptr; DescriptorLength = 0; Ptr = Buffer; while (DescriptorLength < Length) { switch (TableID) { case TID_NIT_ACT: case TID_NIT_OTH: switch (GetDescriptorTag(Ptr)) { case DESCR_NW_NAME: case DESCR_SERVICE_LIST: case DESCR_STUFFING: case DESCR_SAT_DEL_SYS: case DESCR_CABLE_DEL_SYS: case DESCR_LINKAGE: case DESCR_TERR_DEL_SYS: case DESCR_ML_NW_NAME: case DESCR_PRIV_DATA_SPEC: case DESCR_CELL_LIST: case DESCR_CELL_FREQ_LINK: case DESCR_ANNOUNCEMENT_SUPPORT: siParseDescriptor (Descriptors, Ptr); break; default: /* fprintf (stderr, "forbidden descriptor 0x%x in NIT\n", GetDescriptorTag(Ptr));*/ break; } break; case TID_BAT: switch (GetDescriptorTag(Ptr)) { case DESCR_SERVICE_LIST: case DESCR_STUFFING: case DESCR_BOUQUET_NAME: case DESCR_SERVICE: case DESCR_COUNTRY_AVAIL: case DESCR_LINKAGE: case DESCR_CA_IDENT: case DESCR_ML_BQ_NAME: case DESCR_PRIV_DATA_SPEC: siParseDescriptor (Descriptors, Ptr); break; default: /*fprintf (stderr, "forbidden descriptor 0x%x in BAT\n", GetDescriptorTag(Ptr));*/ break; } break; case TID_SDT_ACT: case TID_SDT_OTH: switch (GetDescriptorTag(Ptr)) { case DESCR_STUFFING: case DESCR_BOUQUET_NAME: case DESCR_SERVICE: case DESCR_COUNTRY_AVAIL: case DESCR_LINKAGE: case DESCR_NVOD_REF: case DESCR_TIME_SHIFTED_SERVICE: case DESCR_MOSAIC: case DESCR_CA_IDENT: case DESCR_TELEPHONE: case DESCR_ML_SERVICE_NAME: case DESCR_PRIV_DATA_SPEC: case DESCR_DATA_BROADCAST: siParseDescriptor (Descriptors, Ptr); break; default: /* fprintf (stderr, "forbidden descriptor 0x%x in SDT\n", GetDescriptorTag(Ptr)); */ break; } break; case TID_EIT_ACT: case TID_EIT_OTH: case TID_EIT_ACT_SCH: case TID_EIT_OTH_SCH: case TID_EIT_ACT_SCH+1: case TID_EIT_OTH_SCH+1: case TID_EIT_ACT_SCH+2: case TID_EIT_OTH_SCH+2: case TID_EIT_ACT_SCH+3: case TID_EIT_OTH_SCH+3: case TID_EIT_ACT_SCH+4: case TID_EIT_OTH_SCH+4: case TID_EIT_ACT_SCH+5: case TID_EIT_OTH_SCH+5: case TID_EIT_ACT_SCH+6: case TID_EIT_OTH_SCH+6: case TID_EIT_ACT_SCH+7: case TID_EIT_OTH_SCH+7: case TID_EIT_ACT_SCH+8: case TID_EIT_OTH_SCH+8: case TID_EIT_ACT_SCH+9: case TID_EIT_OTH_SCH+9: case TID_EIT_ACT_SCH+10: case TID_EIT_OTH_SCH+10: case TID_EIT_ACT_SCH+11: case TID_EIT_OTH_SCH+11: case TID_EIT_ACT_SCH+12: case TID_EIT_OTH_SCH+12: case TID_EIT_ACT_SCH+13: case TID_EIT_OTH_SCH+13: case TID_EIT_ACT_SCH+14: case TID_EIT_OTH_SCH+14: case TID_EIT_ACT_SCH+15: case TID_EIT_OTH_SCH+15: switch (GetDescriptorTag(Ptr)) { case DESCR_STUFFING: case DESCR_LINKAGE: case DESCR_SHORT_EVENT: case DESCR_EXTENDED_EVENT: case DESCR_TIME_SHIFTED_EVENT: case DESCR_COMPONENT: case DESCR_CA_IDENT: case DESCR_CONTENT: case DESCR_PARENTAL_RATING: case DESCR_TELEPHONE: case DESCR_ML_COMPONENT: case DESCR_PRIV_DATA_SPEC: case DESCR_SHORT_SMOOTH_BUF: case DESCR_DATA_BROADCAST: case DESCR_PDC: siParseDescriptor (Descriptors, Ptr); break; default: /*fprintf (stderr, "forbidden descriptor 0x%x in EIT\n", GetDescriptorTag(Ptr));*/ break; } break; case TID_TOT: switch (GetDescriptorTag(Ptr)) { case DESCR_LOCAL_TIME_OFF: siParseDescriptor (Descriptors, Ptr); break; default: /*fprintf (stderr, "forbidden descriptor 0x%x in TOT\n", GetDescriptorTag(Ptr));*/ break; } break; case TID_PMT: switch (GetDescriptorTag(Ptr)) { case DESCR_VBI_DATA: case DESCR_VBI_TELETEXT: case DESCR_MOSAIC: case DESCR_STREAM_ID: case DESCR_TELETEXT: case DESCR_SUBTITLING: case DESCR_PRIV_DATA_SPEC: case DESCR_SERVICE_MOVE: case DESCR_CA_SYSTEM: case DESCR_DATA_BROADCAST_ID: case DESCR_AC3: case DESCR_ANCILLARY_DATA: case DESCR_VIDEO_STREAM: case DESCR_AUDIO_STREAM: case DESCR_HIERARCHY: case DESCR_REGISTRATION: case DESCR_DATA_STREAM_ALIGN: case DESCR_TARGET_BACKGRID: case DESCR_VIDEO_WINDOW: case DESCR_CA: case DESCR_ISO_639_LANGUAGE: case DESCR_SYSTEM_CLOCK: case DESCR_MULTIPLEX_BUFFER_UTIL: case DESCR_COPYRIGHT: case DESCR_MAXIMUM_BITRATE: siParseDescriptor (Descriptors, Ptr); break; default: /* fprintf (stderr, "forbidden descriptor 0x%x in PMT\n", GetDescriptorTag(Ptr)); */ break; } break; default: fprintf (stderr, "descriptor 0x%x in unsupported table 0x%x\n", GetDescriptorTag(Ptr), TableID); break; } DescriptorLength += GetDescriptorLength (Ptr); Ptr += GetDescriptorLength (Ptr); } return; } void siParseDescriptor (struct LIST *Descriptors, u_char *Buffer) { struct NODE *Descriptor = NULL; char *Text , *Text2; u_char *Ptr; int Length, i; if (!Descriptors || !Buffer) return; Ptr = Buffer; switch (GetDescriptorTag(Buffer)) { case DESCR_ANCILLARY_DATA: CreateAncillaryDataDescriptor (Descriptor, CastAncillaryDataDescriptor(Buffer)->ancillary_data_identifier); break; case DESCR_BOUQUET_NAME: Text = siGetDescriptorText (Buffer + DESCR_BOUQUET_NAME_LEN, GetDescriptorLength (Buffer) - DESCR_BOUQUET_NAME_LEN); CreateBouquetNameDescriptor (Descriptor, Text); // xMemFree (Text); break; case DESCR_COMPONENT: Text = siGetDescriptorText (Buffer + DESCR_COMPONENT_LEN, GetDescriptorLength (Buffer) - DESCR_COMPONENT_LEN); CreateComponentDescriptor (Descriptor, CastComponentDescriptor(Buffer)->stream_content, CastComponentDescriptor(Buffer)->component_type, CastComponentDescriptor(Buffer)->component_tag, CastComponentDescriptor(Buffer)->lang_code1, CastComponentDescriptor(Buffer)->lang_code2, CastComponentDescriptor(Buffer)->lang_code3, Text); // xMemFree (Text); break; case DESCR_SERVICE: Text = siGetDescriptorText (Buffer + DESCR_SERVICE_LEN, CastServiceDescriptor(Buffer)->provider_name_length); Text2 = siGetDescriptorText (Buffer + DESCR_SERVICE_LEN + CastServiceDescriptor(Buffer)->provider_name_length + 1, *((u_char *)(Buffer + DESCR_SERVICE_LEN + CastServiceDescriptor(Buffer)->provider_name_length))); CreateServiceDescriptor (Descriptor, CastServiceDescriptor(Buffer)->service_type, Text, Text2); // xMemFree (Text2); break; case DESCR_COUNTRY_AVAIL: CreateCountryAvailabilityDescriptor (Descriptor, CastCountryAvailabilityDescriptor(Buffer)->country_availability_flag); Length = GetDescriptorLength (Buffer) - DESCR_COUNTRY_AVAILABILITY_LEN; Ptr += DESCR_COUNTRY_AVAILABILITY_LEN; while (Length > 0) { AddCountryAvailabilityCode(Descriptor, Ptr[0], Ptr[1], Ptr[2]); Ptr += 3; Length -= 3; } break; case DESCR_SHORT_EVENT: Text = siGetDescriptorText (Buffer + DESCR_SHORT_EVENT_LEN, CastShortEventDescriptor(Buffer)->event_name_length); Text2 = siGetDescriptorText (Buffer + DESCR_SHORT_EVENT_LEN + CastShortEventDescriptor(Buffer)->event_name_length + 1, *((u_char *)(Buffer + DESCR_SHORT_EVENT_LEN + CastShortEventDescriptor(Buffer)->event_name_length))); CreateShortEventDescriptor (Descriptor, Text, CastShortEventDescriptor(Buffer)->lang_code1, CastShortEventDescriptor(Buffer)->lang_code2, CastShortEventDescriptor(Buffer)->lang_code3, Text2); // xMemFree (Text); break; case DESCR_EXTENDED_EVENT: Text = siGetDescriptorText (Buffer + DESCR_EXTENDED_EVENT_LEN + CastExtendedEventDescriptor(Buffer)->length_of_items + 1, *((u_char *)(Buffer + DESCR_EXTENDED_EVENT_LEN + CastExtendedEventDescriptor(Buffer)->length_of_items))); CreateExtendedEventDescriptor (Descriptor, CastExtendedEventDescriptor(Buffer)->descriptor_number, CastExtendedEventDescriptor(Buffer)->last_descriptor_number, CastExtendedEventDescriptor(Buffer)->lang_code1, CastExtendedEventDescriptor(Buffer)->lang_code2, CastExtendedEventDescriptor(Buffer)->lang_code3, Text); // xMemFree (Text); Length = CastExtendedEventDescriptor(Buffer)->length_of_items; Ptr += DESCR_EXTENDED_EVENT_LEN; while (Length > 0) { Text = siGetDescriptorText (Ptr + ITEM_EXTENDED_EVENT_LEN, CastExtendedEventItem(Ptr)->item_description_length); Text2 = siGetDescriptorText (Ptr + ITEM_EXTENDED_EVENT_LEN + CastExtendedEventItem(Ptr)->item_description_length + 1, *((u_char *)(Ptr + ITEM_EXTENDED_EVENT_LEN + CastExtendedEventItem(Ptr)->item_description_length))); AddExtendedEventItem (Descriptor, Text2, Text); // xMemFree (Text2); Length -= ITEM_EXTENDED_EVENT_LEN + CastExtendedEventItem(Ptr)->item_description_length + *((u_char *)(Ptr + ITEM_EXTENDED_EVENT_LEN + CastExtendedEventItem(Ptr)->item_description_length)) + 1; Ptr += ITEM_EXTENDED_EVENT_LEN + CastExtendedEventItem(Ptr)->item_description_length + *((u_char *)(Ptr + ITEM_EXTENDED_EVENT_LEN + CastExtendedEventItem(Ptr)->item_description_length)) + 1; } break; case DESCR_CA_IDENT: CreateCaIdentifierDescriptor (Descriptor, (GetDescriptorLength(Buffer) - DESCR_CA_IDENTIFIER_LEN) / 2); Length = GetDescriptorLength (Buffer) - DESCR_CA_IDENTIFIER_LEN; Ptr += DESCR_CA_IDENTIFIER_LEN; i = 0; while (Length > 0) { SetCaIdentifierID(Descriptor, i, *((u_short *) Ptr)); Length -= 2; Ptr += 2; i++; } break; case DESCR_CONTENT: CreateContentDescriptor (Descriptor, (GetDescriptorLength(Buffer) - DESCR_CONTENT_LEN) / 2); Length = GetDescriptorLength (Buffer) - DESCR_CONTENT_LEN; Ptr += DESCR_CONTENT_LEN; i = 0; while (Length > 0) { SetContentID(Descriptor, i, CastContentNibble(Ptr)->content_nibble_level_1, CastContentNibble(Ptr)->content_nibble_level_2, CastContentNibble(Ptr)->user_nibble_1, CastContentNibble(Ptr)->user_nibble_2); Length -= 2; Ptr += 2; i++; } break; case DESCR_STUFFING: /* intentionally ignored */ break; case DESCR_PARENTAL_RATING: CreateParentalRatingDescriptor (Descriptor); Length = GetDescriptorLength (Buffer) - DESCR_PARENTAL_RATING_LEN; Ptr += DESCR_PARENTAL_RATING_LEN; i = 0; while (Length > 0) { AddParentalRating (Descriptor, CastParentalRating(Ptr)->lang_code1, CastParentalRating(Ptr)->lang_code2, CastParentalRating(Ptr)->lang_code3, CastParentalRating(Ptr)->rating); Length -= PARENTAL_RATING_LEN; Ptr += PARENTAL_RATING_LEN; i++; } break; case DESCR_NVOD_REF: CreateNvodReferenceDescriptor (Descriptor); Length = GetDescriptorLength (Buffer) - DESCR_NVOD_REFERENCE_LEN; Ptr += DESCR_NVOD_REFERENCE_LEN; while (Length > 0) { AddNvodReferenceItem (Descriptor, HILO (CastNvodReferenceItem(Ptr)->transport_stream_id), HILO (CastNvodReferenceItem(Ptr)->original_network_id), HILO (CastNvodReferenceItem(Ptr)->service_id)); Length -= ITEM_NVOD_REFERENCE_LEN; Ptr += ITEM_NVOD_REFERENCE_LEN; } break; case DESCR_TIME_SHIFTED_SERVICE: CreateTimeShiftedServiceDescriptor (Descriptor, HILO (CastTimeShiftedServiceDescriptor(Ptr)->reference_service_id)); break; case DESCR_TIME_SHIFTED_EVENT: CreateTimeShiftedEventDescriptor (Descriptor, HILO (CastTimeShiftedEventDescriptor(Ptr)->reference_service_id), HILO (CastTimeShiftedEventDescriptor(Ptr)->reference_event_id)); break; case DESCR_ISO_639_LANGUAGE: CreateIso639LanguageDescriptor (Descriptor, CastIso639LanguageDescriptor(Buffer)->lang_code1, CastIso639LanguageDescriptor(Buffer)->lang_code2, CastIso639LanguageDescriptor(Buffer)->lang_code3); break; case DESCR_STREAM_ID: CreateStreamIdentifierDescriptor (Descriptor, CastStreamIdentifierDescriptor(Ptr)->component_tag); break; case DESCR_LINKAGE: CreateLinkageDescriptor (Descriptor, HILO (CastLinkageDescriptor(Ptr)->transport_stream_id), HILO (CastLinkageDescriptor(Ptr)->original_network_id), HILO (CastLinkageDescriptor(Ptr)->service_id), CastLinkageDescriptor(Ptr)->linkage_type, GetDescriptorLength (Ptr) - DESCR_LINKAGE_LEN, Ptr + DESCR_LINKAGE_LEN); break; case DESCR_VIDEO_STREAM: case DESCR_AUDIO_STREAM: case DESCR_HIERARCHY: case DESCR_REGISTRATION: case DESCR_DATA_STREAM_ALIGN: case DESCR_TARGET_BACKGRID: case DESCR_VIDEO_WINDOW: case DESCR_CA: case DESCR_SYSTEM_CLOCK: case DESCR_MULTIPLEX_BUFFER_UTIL: case DESCR_COPYRIGHT: case DESCR_MAXIMUM_BITRATE: case DESCR_PRIVATE_DATA_IND: case DESCR_SMOOTHING_BUFFER: case DESCR_STD: case DESCR_IBP: case DESCR_NW_NAME: case DESCR_SERVICE_LIST: case DESCR_SAT_DEL_SYS: case DESCR_CABLE_DEL_SYS: case DESCR_VBI_DATA: case DESCR_VBI_TELETEXT: case DESCR_MOSAIC: case DESCR_TELETEXT: case DESCR_TELEPHONE: case DESCR_LOCAL_TIME_OFF: case DESCR_SUBTITLING: case DESCR_TERR_DEL_SYS: case DESCR_ML_NW_NAME: case DESCR_ML_BQ_NAME: case DESCR_ML_SERVICE_NAME: case DESCR_ML_COMPONENT: case DESCR_PRIV_DATA_SPEC: case DESCR_SERVICE_MOVE: case DESCR_SHORT_SMOOTH_BUF: case DESCR_FREQUENCY_LIST: case DESCR_PARTIAL_TP_STREAM: case DESCR_DATA_BROADCAST: case DESCR_CA_SYSTEM: case DESCR_DATA_BROADCAST_ID: case DESCR_TRANSPORT_STREAM: case DESCR_DSNG: case DESCR_PDC: case DESCR_AC3: case DESCR_CELL_LIST: case DESCR_CELL_FREQ_LINK: case DESCR_ANNOUNCEMENT_SUPPORT: default: /* fprintf (stderr, "unsupported descriptor 0x%x\n", GetDescriptorTag(Buffer)); */ break; } if (Descriptor) xAddTail (Descriptors, Descriptor); return; } /* * ToDo: ETSI conformal text definition */ char *siGetDescriptorText (u_char *Buffer, u_int Length) { char *tmp, *result; int i; if (*Buffer == 0x05 || (*Buffer >= 0x20 && *Buffer <= 0xff)) { xMemAlloc (Length+1, &result); tmp = result; for (i = 0; i < Length; i++) { if (*Buffer == 0) break; if ((*Buffer >= ' ' && *Buffer <= '~') || (*Buffer >= 0xa0 && *Buffer <= 0xff)) *tmp++ = *Buffer++; else Buffer++; } *tmp = '\0'; } else { switch (*Buffer) { case 0x01: result = xSetText ("Coding according to character table 1"); break; case 0x02: result = xSetText ("Coding according to character table 2"); break; case 0x03: result = xSetText ("Coding according to character table 3"); break; case 0x04: result = xSetText ("Coding according to character table 4"); break; case 0x10: result = xSetText ("Coding according to ISO/IEC 8859"); break; case 0x11: result = xSetText ("Coding according to ISO/IEC 10646"); break; case 0x12: result = xSetText ("Coding according to KSC 5601"); break; default: result = xSetText ("Unknown coding"); break; } } return (result); } // CRC32 lookup table for polynomial 0x04c11db7 static u_long crc_table[256] = { 0x00000000, 0x04c11db7, 0x09823b6e, 0x0d4326d9, 0x130476dc, 0x17c56b6b, 0x1a864db2, 0x1e475005, 0x2608edb8, 0x22c9f00f, 0x2f8ad6d6, 0x2b4bcb61, 0x350c9b64, 0x31cd86d3, 0x3c8ea00a, 0x384fbdbd, 0x4c11db70, 0x48d0c6c7, 0x4593e01e, 0x4152fda9, 0x5f15adac, 0x5bd4b01b, 0x569796c2, 0x52568b75, 0x6a1936c8, 0x6ed82b7f, 0x639b0da6, 0x675a1011, 0x791d4014, 0x7ddc5da3, 0x709f7b7a, 0x745e66cd, 0x9823b6e0, 0x9ce2ab57, 0x91a18d8e, 0x95609039, 0x8b27c03c, 0x8fe6dd8b, 0x82a5fb52, 0x8664e6e5, 0xbe2b5b58, 0xbaea46ef, 0xb7a96036, 0xb3687d81, 0xad2f2d84, 0xa9ee3033, 0xa4ad16ea, 0xa06c0b5d, 0xd4326d90, 0xd0f37027, 0xddb056fe, 0xd9714b49, 0xc7361b4c, 0xc3f706fb, 0xceb42022, 0xca753d95, 0xf23a8028, 0xf6fb9d9f, 0xfbb8bb46, 0xff79a6f1, 0xe13ef6f4, 0xe5ffeb43, 0xe8bccd9a, 0xec7dd02d, 0x34867077, 0x30476dc0, 0x3d044b19, 0x39c556ae, 0x278206ab, 0x23431b1c, 0x2e003dc5, 0x2ac12072, 0x128e9dcf, 0x164f8078, 0x1b0ca6a1, 0x1fcdbb16, 0x018aeb13, 0x054bf6a4, 0x0808d07d, 0x0cc9cdca, 0x7897ab07, 0x7c56b6b0, 0x71159069, 0x75d48dde, 0x6b93dddb, 0x6f52c06c, 0x6211e6b5, 0x66d0fb02, 0x5e9f46bf, 0x5a5e5b08, 0x571d7dd1, 0x53dc6066, 0x4d9b3063, 0x495a2dd4, 0x44190b0d, 0x40d816ba, 0xaca5c697, 0xa864db20, 0xa527fdf9, 0xa1e6e04e, 0xbfa1b04b, 0xbb60adfc, 0xb6238b25, 0xb2e29692, 0x8aad2b2f, 0x8e6c3698, 0x832f1041, 0x87ee0df6, 0x99a95df3, 0x9d684044, 0x902b669d, 0x94ea7b2a, 0xe0b41de7, 0xe4750050, 0xe9362689, 0xedf73b3e, 0xf3b06b3b, 0xf771768c, 0xfa325055, 0xfef34de2, 0xc6bcf05f, 0xc27dede8, 0xcf3ecb31, 0xcbffd686, 0xd5b88683, 0xd1799b34, 0xdc3abded, 0xd8fba05a, 0x690ce0ee, 0x6dcdfd59, 0x608edb80, 0x644fc637, 0x7a089632, 0x7ec98b85, 0x738aad5c, 0x774bb0eb, 0x4f040d56, 0x4bc510e1, 0x46863638, 0x42472b8f, 0x5c007b8a, 0x58c1663d, 0x558240e4, 0x51435d53, 0x251d3b9e, 0x21dc2629, 0x2c9f00f0, 0x285e1d47, 0x36194d42, 0x32d850f5, 0x3f9b762c, 0x3b5a6b9b, 0x0315d626, 0x07d4cb91, 0x0a97ed48, 0x0e56f0ff, 0x1011a0fa, 0x14d0bd4d, 0x19939b94, 0x1d528623, 0xf12f560e, 0xf5ee4bb9, 0xf8ad6d60, 0xfc6c70d7, 0xe22b20d2, 0xe6ea3d65, 0xeba91bbc, 0xef68060b, 0xd727bbb6, 0xd3e6a601, 0xdea580d8, 0xda649d6f, 0xc423cd6a, 0xc0e2d0dd, 0xcda1f604, 0xc960ebb3, 0xbd3e8d7e, 0xb9ff90c9, 0xb4bcb610, 0xb07daba7, 0xae3afba2, 0xaafbe615, 0xa7b8c0cc, 0xa379dd7b, 0x9b3660c6, 0x9ff77d71, 0x92b45ba8, 0x9675461f, 0x8832161a, 0x8cf30bad, 0x81b02d74, 0x857130c3, 0x5d8a9099, 0x594b8d2e, 0x5408abf7, 0x50c9b640, 0x4e8ee645, 0x4a4ffbf2, 0x470cdd2b, 0x43cdc09c, 0x7b827d21, 0x7f436096, 0x7200464f, 0x76c15bf8, 0x68860bfd, 0x6c47164a, 0x61043093, 0x65c52d24, 0x119b4be9, 0x155a565e, 0x18197087, 0x1cd86d30, 0x029f3d35, 0x065e2082, 0x0b1d065b, 0x0fdc1bec, 0x3793a651, 0x3352bbe6, 0x3e119d3f, 0x3ad08088, 0x2497d08d, 0x2056cd3a, 0x2d15ebe3, 0x29d4f654, 0xc5a92679, 0xc1683bce, 0xcc2b1d17, 0xc8ea00a0, 0xd6ad50a5, 0xd26c4d12, 0xdf2f6bcb, 0xdbee767c, 0xe3a1cbc1, 0xe760d676, 0xea23f0af, 0xeee2ed18, 0xf0a5bd1d, 0xf464a0aa, 0xf9278673, 0xfde69bc4, 0x89b8fd09, 0x8d79e0be, 0x803ac667, 0x84fbdbd0, 0x9abc8bd5, 0x9e7d9662, 0x933eb0bb, 0x97ffad0c, 0xafb010b1, 0xab710d06, 0xa6322bdf, 0xa2f33668, 0xbcb4666d, 0xb8757bda, 0xb5365d03, 0xb1f740b4}; u_long crc32 (char *data, int len) { register int i; u_long crc = 0xffffffff; for (i=0; i> 24) ^ *data++) & 0xff]; return crc; }