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vdr/libdtv/libsi/si_parser.c
Klaus Schmidinger 9f91980146 Version 1.1.27 
- The CAM is now accessed only if the current channel actually has a non-zero Ca
  value, and CAM access is completely suppressed during replay, which avoids
  problems in case the CAM is attached to the primary DVB device.
- The "Left" and "Right" buttons now set the cursor to the first or last list item
  even if the list consist only of a single page, like, for instance, the Main menu
  (thanks to Oliver Endriss).
- Made the log message "OSD window width must be a multiple of 4..." a debug message
  instead of an error message, so it can be avoided by using a log level less than 3.
- Updated Greek language texts (thanks to Dimitrios Dimitrakos).
- Fixed faulty behaviour of the "Mute" key in case the channel display is visible
  (thanks to Florian Bartels for reporting this one and Sascha Volkenandt for
  helping to fix it).
- Modified LOF handling to allow for C-band reception (thanks to Malcolm Caldwell).
- Added some missing cAudio handling calls (thanks to Werner Fink).
- Replaced the 'for' loops in StripAudioPackets() with memset() calls (thanks to
  Werner Fink).
- Further increased the timeout until an index file is considerd no longer to be
  written.
- Fixed a crash in case the index file can't be accessed any more during replay
  (thanks to Stefan Huelswitt for reporting this one).
- Fixed displaying messages in the status line in case they exceed the OSD width
  (thanks to Gerhard Steiner for reporting this one).
- Avoiding high CPU load in case the connection to LIRC gets lost (thanks to
  Ludwig Nussel).
- Fixed handling repeat function with LIRC (thanks to Ludwig Nussel).
- Fixed handling min/max borders when entering integer values (thanks to Andy
  Grobb for reporting this one).
- Implemented a "resume ID" which allows several users to each have their own
  resume.vdr files (thanks to Martin Hammerschmid). This parameter can be set in
  the "Setup/Replay" menu (see MANUAL for details).
- Now using 'libdtv' version 0.0.5 (thanks to Rolf Hakenes for the new version
  and Stefan Huelswitt for adapting VDR to it).
- If no device with an MPEG decoder can be found at startup, the first device
  is now used as primary device (just to have some device).
- Adjusted some Premiere channels in 'channels.conf' (thanks to Thomas Koch).
- Updated 'channels.conf.cable' (thanks to Stefan Hußfeldt).
- The 'epg.data' file is now read after all plugins have been started (thanks
  to Sascha Volkenandt).
- The LIRC remote control no longer tries to learn keys if it can't connect to
  the LIRC daemon (thanks to Ludwig Nussel for reporting this one). The same
  applies to the RCU remote control in case of errors during startup.
- Fixed handling of Ca parameters with values <= MAXDEVICES, which don't indicate
  an actual encrypted channel (thanks to Stefan Huelswitt for reporting this one).
2003-04-13 18:00:00 +02:00

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//////////////////////////////////////////////////////////////
/// ///
/// si_parser.c: main parsing functions of libsi ///
/// ///
//////////////////////////////////////////////////////////////
// $Revision: 1.8 $
// $Date: 2003/02/04 18:45:35 $
// $Author: hakenes $
//
// (C) 2001-03 Rolf Hakenes <hakenes@hippomi.de>, under the
// GNU GPL with contribution of Oleg Assovski,
// www.satmania.com
//
// 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 <stdio.h>
#include <string.h>
#include <math.h>
#include <time.h>
#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;
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 LIST *siParseCAT (u_char *Buffer)
{
cat_t *Cat;
u_char *Ptr;
int SectionLength;
int TransportStreamID;
int CatVersion;
struct Descriptor *Descriptor;
struct LIST *DescriptorList = NULL;
if (!Buffer) return NULL;
Cat = (cat_t *) Buffer; Ptr = Buffer;
if (Cat->table_id != TID_CAT) {
// fprintf (stderr, "CAT: wrong TID %d\n", Cat->table_id);
return NULL;
}
SectionLength = HILO (Cat->section_length) + 3 - CAT_LEN - 4;
if (crc32 (Ptr, HILO (Cat->section_length) + 3)) return (NULL);
CatVersion = Cat->version_number;
Ptr += CAT_LEN;
if (SectionLength >= 0)
{
DescriptorList = xNewList (NULL);
siParseDescriptors (DescriptorList, Ptr, SectionLength, Cat->table_id);
}
return (DescriptorList);
}
struct Pid *siParsePMT (u_char *Buffer)
{
pmt_t *Pmt;
pmt_info_t *PmtInfo;
u_char *Ptr;
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);
if (StreamLength >= 0) 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 *siParseNIT (u_char *Buffer)
{
nit_t *Nit;
nit_mid_t *NitMid;
nit_ts_t *TSDesc;
u_char *Ptr;
int SectionLength, LoopLength, Loop2Length;
int TransportStreamID;
int NitVersion;
int NetworkID;
struct TransportStream *TransportStream;
struct LIST *TSList = NULL;
struct LIST *Networks;
struct NetworkInfo *Network;
if (!Buffer) return NULL;
Nit = (nit_t *) Buffer;
Ptr = Buffer;
if (Nit->table_id != TID_NIT_ACT && Nit->table_id != TID_NIT_OTH && Nit->table_id != TID_BAT) {
return NULL;
}
SectionLength = HILO (Nit->section_length) + 3 - NIT_LEN - 4;
if (crc32 (Ptr, HILO (Nit->section_length) + 3)) return (NULL);
NitVersion = Nit->version_number;
NetworkID = HILO (Nit->network_id);
if (NetworkID == 65535)
NetworkID = 0;
CreateNetworkInfo (Network, NetworkID);
Networks = xNewList (NULL);
xAddTail (Networks, Network);
Ptr += NIT_LEN;
LoopLength = HILO (Nit->network_descriptor_length);
// fprintf (stderr, "table 0x%X, SectionLen = %d, LoopLen = %d\n",
// Nit->table_id, SectionLength, LoopLength);
if (LoopLength > SectionLength - SDT_DESCR_LEN)
return (Networks);
if (LoopLength <= SectionLength) {
if (SectionLength >= 0) siParseDescriptors (Network->Descriptors, Ptr, LoopLength, Nit->table_id);
SectionLength -= LoopLength;
Ptr += LoopLength;
NitMid = (nit_mid_t *) Ptr;
LoopLength = HILO (NitMid->transport_stream_loop_length);
// fprintf (stderr, "table 0x%X, TS LoopLen = %d\n",
// Nit->table_id, LoopLength);
if ((SectionLength > 0) && (LoopLength <= SectionLength)) {
SectionLength -= SIZE_NIT_MID;
Ptr += SIZE_NIT_MID;
while (LoopLength > 0) {
TSDesc = (nit_ts_t *) Ptr;
CreateTransportStream (TransportStream, HILO(TSDesc->transport_stream_id), HILO(TSDesc->original_network_id));
if (TransportStream->TransportStreamID == 65535)
TransportStream->TransportStreamID = 0;
if (TransportStream->OriginalNetworkID == 65535)
TransportStream->OriginalNetworkID = 0;
Loop2Length = HILO (TSDesc->transport_descriptors_length);
// fprintf (stderr, "table 0x%X, TSdesc LoopLen = %d\n",
// Nit->table_id, Loop2Length);
Ptr += NIT_TS_LEN;
if (Loop2Length <= LoopLength) {
if (LoopLength >= 0) siParseDescriptors (TransportStream->Descriptors, Ptr, Loop2Length, Nit->table_id);
}
if (!Network->TransportStreams)
Network->TransportStreams = xNewList (NULL);
xAddTail (Network->TransportStreams, TransportStream);
LoopLength -= Loop2Length + NIT_TS_LEN;
SectionLength -= Loop2Length + NIT_TS_LEN;
Ptr += Loop2Length;
}
}
}
return (Networks);
}
struct LIST *siParseSDT (u_char *Buffer)
{
sdt_t *Sdt;
sdt_descr_t *SdtDescriptor;
u_char *Ptr;
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);
if (LoopLength > SectionLength - SDT_DESCR_LEN)
return (ServiceList);
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;
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);
if (LoopLength > SectionLength - EIT_EVENT_LEN)
return (EventList);
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;
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);
}
struct Tot *siParseTOT (u_char *Buffer)
{
tot_t *Tot;
u_char *Ptr;
int SectionLength, LoopLength;
struct Tot *table;
time_t CurrentTime;
if (!Buffer) return NULL;
Tot = (tot_t *) Buffer;
Ptr = Buffer;
if (Tot->table_id != TID_TOT) {
return NULL;
}
if (crc32 (Ptr, HILO (Tot->section_length) + 3)) return (NULL);
// SectionLength = HILO (Tot->section_length) + 3 - TOT_LEN - 4;
CurrentTime = MjdToEpochTime (Tot->utc_mjd) +
BcdTimeToSeconds (Tot->utc_time);
LoopLength = HILO (Tot->descriptors_loop_length);
if (!LoopLength)
return NULL;
CreateTot (table, CurrentTime);
Ptr += TOT_LEN;
siParseDescriptors (table->Descriptors, Ptr, LoopLength, Tot->table_id);
// fprintf (stderr, "TOT Bias: %d\n", table->Bias);
return (table);
}
static u_char TempTableID = 0;
void siParseDescriptors (struct LIST *Descriptors, u_char *Buffer,
int Length, u_char TableID)
{
int DescriptorLength;
u_char *Ptr;
DescriptorLength = 0;
Ptr = Buffer;
TempTableID = TableID;
while (DescriptorLength < Length)
{
if ((GetDescriptorLength (Ptr) > Length - DescriptorLength) ||
(GetDescriptorLength (Ptr) <= 0)) return;
switch (TableID)
{
case TID_NIT_ACT: case TID_NIT_OTH:
switch (GetDescriptorTag(Ptr))
{
case DESCR_SAT_DEL_SYS:
case DESCR_CABLE_DEL_SYS:
case DESCR_SERVICE_LIST:
case DESCR_PRIV_DATA_SPEC:
// fprintf (stderr, "Got descriptor with tag = 0x%X\n", GetDescriptorTag(Ptr));
// siDumpDescriptor (Ptr);
case DESCR_NW_NAME:
case DESCR_STUFFING:
case DESCR_LINKAGE:
case DESCR_TERR_DEL_SYS:
case DESCR_ML_NW_NAME:
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:
// fprintf (stderr, "Got descriptor with tag = 0x%X\n", GetDescriptorTag(Ptr));
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;
case TID_CAT:
switch (GetDescriptorTag(Ptr))
{
case DESCR_CA_SYSTEM:
case DESCR_CA:
case DESCR_CA_IDENT:
siParseDescriptor (Descriptors, Ptr);
break;
default:
// fprintf (stderr, "forbidden descriptor 0x%x in CAT\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;
// fprintf (stderr, "Got descriptor with tag = 0x%X\n", GetDescriptorTag(Buffer));
switch (GetDescriptorTag(Buffer))
{
case DESCR_ANCILLARY_DATA:
CreateAncillaryDataDescriptor (Descriptor,
CastAncillaryDataDescriptor(Buffer)->ancillary_data_identifier);
break;
case DESCR_NW_NAME:
case DESCR_BOUQUET_NAME:
Text = siGetDescriptorName (Buffer + DESCR_BOUQUET_NAME_LEN,
GetDescriptorLength (Buffer) - DESCR_BOUQUET_NAME_LEN);
// fprintf (stderr, "Got descriptor with tag = 0x%X, text = '%s'\n", GetDescriptorTag(Buffer), Text);
CreateBouquetNameDescriptor (Descriptor, Text, GetDescriptorTag(Buffer));
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);
break;
case DESCR_SERVICE:
Text = siGetDescriptorName (Buffer + DESCR_SERVICE_LEN,
CastServiceDescriptor(Buffer)->provider_name_length);
Text2 = siGetDescriptorName (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);
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 = siGetDescriptorName (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);
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);
Length = CastExtendedEventDescriptor(Buffer)->length_of_items;
Ptr += DESCR_EXTENDED_EVENT_LEN;
// printf ("EEDesc #%d, %s\n", CastExtendedEventDescriptor(Buffer)->descriptor_number, Text);
while ((Length > 0) && (Length < GetDescriptorLength (Buffer)))
{
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)));
// printf ("EEItem #%d, %s, %s\n", CastExtendedEventDescriptor(Buffer)->descriptor_number, Text, Text2);
AddExtendedEventItem (Descriptor, Text2, Text);
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:
Length = GetDescriptorLength (Buffer) - DESCR_CA_IDENTIFIER_LEN;
CreateCaIdentifierDescriptor (Descriptor, Length / 2);
Ptr += DESCR_CA_IDENTIFIER_LEN; i = 0;
while (Length > 0)
{ SetCaIdentifierID(Descriptor, i, ((*((u_char *) Ptr)<<8) + *((u_char *) (Ptr+1))));
Length -= 2; Ptr += 2; i++; }
break;
case DESCR_CA:
{
struct CaDescriptor *CD;
Length = GetDescriptorLength (Buffer) - DESCR_CA_LEN;
CreateCaDescriptor (Descriptor,
HILO(CastCaDescriptor(Buffer)->CA_type),
HILO(CastCaDescriptor(Buffer)->CA_PID), Length);
Ptr += DESCR_CA_LEN; i = 0;
while (Length > 0)
{ SetCaData(Descriptor, i, *Ptr);
Length --; Ptr ++; i++; }
/*
* The following analyses are more or less directly copied from
* MultiDec 8.4b Sources. Thanx to Espresso for his great work !!
*/
CD = (struct CaDescriptor *) Descriptor;
// fprintf (stderr, "TableID: %02x - CA - Type: 0x%04x, PID: %d\n", TempTableID, CD->CA_type, CD->CA_PID);
if ((CD->CA_type >> 8) == 0x01) /* SECA */
{
CD->ProviderID = (GetCaData (CD, 0) << 8) | GetCaData (CD, 1);
}
else if ((CD->CA_type >> 8) == 0x05) /* Viaccess ? (France Telecom) */
{
i=0;
while (i < CD->DataLength)
{
if ((GetCaData (CD, i) == 0x14) && (GetCaData (CD, i+1) == 0x03))
{
CD->ProviderID = (GetCaData (CD, i+2) << 16) |
(GetCaData (CD, i+3) << 8) |
(GetCaData (CD, i+4) & 0xf0);
i = CD->DataLength;
}
i++;
}
}
if (CD->CA_type==0x0100) /* SECA 1 */
{
/* bptr=MyPtr+19;
i=19;
while ( i+4 < ca_info->len ) {
if ( (*bptr&0xE0) == 0xE0 ) {
CA_ECM=(( *bptr&0x1f)<<8)+*(bptr+1);
Prov_Ident = ( *(bptr+2)<<8) | *(bptr+3);
j=0;
while ( j < ProgrammNeu[ProgrammNummer].CA_Anzahl ) {
if (( ProgrammNeu[ProgrammNummer].CA_System[j].CA_Typ == CA_Typ )
&& ( ProgrammNeu[ProgrammNummer].CA_System[j].ECM == CA_ECM )) break;
j++;
};
if ( j < MAX_CA_SYSTEMS ) {
if ( j >= ProgrammNeu[ProgrammNummer].CA_Anzahl )
ProgrammNeu[ProgrammNummer].CA_Anzahl++;
ProgrammNeu[ProgrammNummer].CA_System[j].CA_Typ =CA_Typ;
ProgrammNeu[ProgrammNummer].CA_System[j].ECM =CA_ECM ;
ProgrammNeu[ProgrammNummer].CA_System[j].Provider_Id = Prov_Ident;
};
}
i+=0x0f;
bptr+=0x0f;
}; */
}
}
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_TELETEXT:
CreateTeletextDescriptor (Descriptor);
Length = GetDescriptorLength (Buffer) - DESCR_TELETEXT_LEN;
Ptr += DESCR_TELETEXT_LEN;
while (Length > 0)
{
AddTeletextItem (Descriptor,
CastTeletextItem(Ptr)->type,
CastTeletextItem(Ptr)->magazine_number,
CastTeletextItem(Ptr)->page_number,
CastTeletextItem(Ptr)->lang_code1,
CastTeletextItem(Ptr)->lang_code2,
CastTeletextItem(Ptr)->lang_code3);
Length -= ITEM_TELETEXT_LEN;
Ptr += ITEM_TELETEXT_LEN;
}
break;
case DESCR_AC3:
CreateAc3Descriptor (Descriptor);
Length = GetDescriptorLength (Buffer);
if (CastAc3Descriptor(Buffer)->ac3_type_flag)
{ Length -= 1; Ptr += 1; AddAc3FlagAndValue (Descriptor,
AC3_TYPE_FLAG, CastAc3Descriptor(Buffer)->ac3_type); }
if (CastAc3Descriptor(Buffer)->bsid_flag)
{ Length -= 1; Ptr += 1; AddAc3FlagAndValue (Descriptor,
BS_ID_FLAG, CastAc3Descriptor(Buffer)->bsid); }
if (CastAc3Descriptor(Buffer)->mainid_flag)
{ Length -= 1; Ptr += 1; AddAc3FlagAndValue (Descriptor,
MAIN_ID_FLAG, CastAc3Descriptor(Buffer)->mainid); }
if (CastAc3Descriptor(Buffer)->asvc_flag)
{ Length -= 1; Ptr += 1; AddAc3FlagAndValue (Descriptor,
ASVC_FLAG, CastAc3Descriptor(Buffer)->asvc); }
Length -= DESCR_AC3_LEN;
Ptr += DESCR_AC3_LEN;
if (Length > 0) AddAc3AdditionalData (Descriptor, Ptr, Length);
break;
case DESCR_SUBTITLING:
CreateSubtitlingDescriptor (Descriptor);
Length = GetDescriptorLength (Buffer) - DESCR_SUBTITLING_LEN;
Ptr += DESCR_SUBTITLING_LEN;
while (Length > 0)
{
AddSubtitlingItem (Descriptor,
CastSubtitlingItem(Ptr)->subtitling_type,
HILO (CastSubtitlingItem(Ptr)->composition_page_id),
HILO (CastSubtitlingItem(Ptr)->ancillary_page_id),
CastSubtitlingItem(Ptr)->lang_code1,
CastSubtitlingItem(Ptr)->lang_code2,
CastSubtitlingItem(Ptr)->lang_code3);
Length -= ITEM_SUBTITLING_LEN;
Ptr += ITEM_SUBTITLING_LEN;
}
break;
case DESCR_SAT_DEL_SYS:
// fprintf (stderr, "got descriptor 0x%x\n", GetDescriptorTag(Buffer));
{
descr_satellite_delivery_system_t *sds;
sds = (descr_satellite_delivery_system_t *) Ptr;
if (CheckBcdChar (sds->frequency1) && CheckBcdChar (sds->frequency2) &&
CheckBcdChar (sds->frequency3) && CheckBcdChar (sds->frequency4) &&
CheckBcdChar (sds->orbital_position1) &&
CheckBcdChar (sds->orbital_position2) &&
CheckBcdChar (sds->symbol_rate1) && CheckBcdChar (sds->symbol_rate1) &&
CheckBcdChar (sds->symbol_rate3) && (sds->fec_inner != 0) && (sds->modulation == 1))
{
CreateSatelliteDeliverySystemDescriptor (Descriptor,
BcdCharToInt (sds->frequency1) * 10 * 1000 * 1000 +
BcdCharToInt (sds->frequency2) * 100 * 1000 +
BcdCharToInt (sds->frequency3) * 1000 +
BcdCharToInt (sds->frequency4) * 10,
(sds->west_east_flag ? 1 : -1) *
(BcdCharToInt (sds->orbital_position1) * 100 +
BcdCharToInt (sds->orbital_position2)),
sds->polarization,
BcdCharToInt (sds->symbol_rate1) * 10 * 1000 +
BcdCharToInt (sds->symbol_rate2) * 100 +
BcdCharToInt (sds->symbol_rate3),
sds->fec_inner);
}
/* else
{
fprintf (stderr, "Illegal sds descriptor\n");
siDumpDescriptor (Buffer);
} */
}
break;
case DESCR_SERVICE_LIST:
// fprintf (stderr, "got descriptor 0x%x\n", GetDescriptorTag(Buffer));
CreateServiceListDescriptor (Descriptor);
Length = GetDescriptorLength (Buffer) - DESCR_SERVICE_LIST_LEN;
Ptr += DESCR_SERVICE_LIST_LEN;
while (Length > 0)
{
AddServiceListEntry (Descriptor,
HILO (CastServiceListDescriptorLoop(Ptr)->service_id),
CastServiceListDescriptorLoop(Ptr)->service_type);
Length -= DESCR_SERVICE_LIST_LEN;
Ptr += DESCR_SERVICE_LIST_LEN;
}
break;
case DESCR_LOCAL_TIME_OFF:
CreateLocalTimeOffsetDescriptor (Descriptor);
Length = GetDescriptorLength (Buffer) - DESCR_LOCAL_TIME_OFFSET_LEN;
Ptr += DESCR_LOCAL_TIME_OFFSET_LEN;
while (Length > 0)
{
time_t ct, co, no;
ct = MjdToEpochTime (CastLocalTimeOffsetEntry(Ptr)->time_of_change_mjd) +
BcdTimeToSeconds (CastLocalTimeOffsetEntry(Ptr)->time_of_change_time);
co = (BcdCharToInt(CastLocalTimeOffsetEntry(Ptr)->local_time_offset_h) * 3600 +
BcdCharToInt(CastLocalTimeOffsetEntry(Ptr)->local_time_offset_m) * 60) *
((CastLocalTimeOffsetEntry(Ptr)->local_time_offset_polarity) ? -1 : 1);
no = (BcdCharToInt(CastLocalTimeOffsetEntry(Ptr)->next_time_offset_h) * 3600 +
BcdCharToInt(CastLocalTimeOffsetEntry(Ptr)->next_time_offset_m) * 60) *
((CastLocalTimeOffsetEntry(Ptr)->local_time_offset_polarity) ? -1 : 1);
AddLocalTimeOffsetEntry (Descriptor,
CastLocalTimeOffsetEntry(Ptr)->country_code1,
CastLocalTimeOffsetEntry(Ptr)->country_code2,
CastLocalTimeOffsetEntry(Ptr)->country_code3,
CastLocalTimeOffsetEntry(Ptr)->country_region_id, co, ct, no);
Length -= LOCAL_TIME_OFFSET_ENTRY_LEN;
Ptr += LOCAL_TIME_OFFSET_ENTRY_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_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_CABLE_DEL_SYS:
case DESCR_VBI_DATA:
case DESCR_VBI_TELETEXT:
case DESCR_MOSAIC:
case DESCR_TELEPHONE:
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_CELL_LIST:
case DESCR_CELL_FREQ_LINK:
case DESCR_ANNOUNCEMENT_SUPPORT:
default:
// fprintf (stderr, "Unsupported descriptor with tag = 0x%02X\n", GetDescriptorTag(Ptr));
// siDumpDescriptor (Buffer);
/* fprintf (stderr, "unsupported descriptor 0x%x\n",
GetDescriptorTag(Buffer)); */
break;
}
if (Descriptor) xAddTail (Descriptors, Descriptor);
return;
}
/*
* ToDo: ETSI conformal text definition
*/
#define GDT_TEXT_DESCRIPTOR 0
#define GDT_NAME_DESCRIPTOR 1
char *siGetDescriptorTextHandler (u_char *, int , int );
char *siGetDescriptorTextHandler (u_char *Buffer, int Length, int type)
{
char *tmp, *result;
int i;
if ((Length < 0) || (Length > 4095))
return (xSetText ("text error"));
/* ASSENIZATION: removing coding detection - suppose they are all ANSI */
// 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 == '\n') ||
(*Buffer >= 0xa0 && *Buffer <= 0xff)) *tmp++ = *Buffer;
if (*Buffer == 0x8A) *tmp++ = '\n';
if (*Buffer == 0x86 || *Buffer == 0x87) *tmp++ = ' ';
if ((*Buffer == 0x86 || *Buffer == 0x87) && !(GDT_NAME_DESCRIPTOR & type)) *tmp++ = ' ';
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);
}
char *siGetDescriptorText (u_char *Buffer, int Length)
{
return siGetDescriptorTextHandler (Buffer, Length, GDT_TEXT_DESCRIPTOR);
}
char *siGetDescriptorName (u_char *Buffer, int Length)
{
return siGetDescriptorTextHandler (Buffer, Length, GDT_NAME_DESCRIPTOR);
}
// 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<len; i++)
crc = (crc << 8) ^ crc_table[((crc >> 24) ^ *data++) & 0xff];
return crc;
}
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