Version 1.3.0vdr-1.3.0

- Changed thread handling to make it work with NPTL ("Native Posix Thread Library").
  Thanks to Jon Burgess, Andreas Schultz, Werner Fink and Stefan Huelswitt.
- The cThread class now accepts a 'Description' parameter, which is used to log
  the beginning and end of the thread, together with its process and thread id.
  For descriptions that need additional parameters you can use the function
  cThread::SetDescription(), which accepts 'printf()' like arguments.
  Existing plugins that use threads should be changed to use this functionality
  instead of explicit 'dsyslog()' calls inside their Action() function in order
  to support logging the thread ids.
- Added "Slovak Link" and "Czech Link" to 'ca.conf' (thanks to Emil Petersky).
  However, 'ca.conf' is now pretty much obsolete due to the automatic CA handling.
- Mutexes are now created with PTHREAD_MUTEX_ERRORCHECK_NP, which makes the
  'lockingTid' stuff obsolete (thanks to Stefan Huelswitt).
- Changed font handling to allow language specific character sets.
- Adopted the small font character set from the "Elchi" patch (originally
  provided by Alessio Sangalli).
- Greek language texts now use iso8859-7 character set (thanks to Dimitrios
  Dimitrakos).
- Rearranged section data handling, so that the actual data handling can be done
  separately, even from within plugins.
- The EPG data structures have been moved from eit.[hc] to epg.[hc] and have been
  adapted to the general VDR coding style. Plugins that use these data structures
  may need to change some function names (which should be obvious).
  The name 'subtitle' has been changed to 'shortText' to avoid clashes with actual
  subtitles that are part of a movie. The name 'extendedDescription' has been
  shortened to 'description'.
- Replaced 'libdtv' with 'libsi' (thanks to Marcel Wiesweg), which is thread
  safe and can be used by multiple section filters simultaneously.
- Added 'cRwLock' to 'thread.[hc]'. Note that all plugin Makefiles need to
  define _GNU_SOURCE for this to work (see the example plugin Makefiles and
  'newplugin').
- Fixed a problem with crc32 in SI handling on 64bit systems (thanks to Pedro
  Miguel Sequeira de Justo Teixeira for reporting this one).
- Fixed an alignment problem in CAM access on 64bit systems  (thanks to Pedro
  Miguel Sequeira de Justo Teixeira for reporting this one).
- Added 'StreamType' setting to CAM communication, which is important for
  Aston/SECA CAMs (thanks to Antonino Sergi).
- Now the CA descriptors are sent to the CAM in the 'program' or 'ES level'
  sections, depending on where they are found in the PMT (thanks to Hans-Peter
  Raschke for reporting this one). This should make SkyCrypt CAMs work.
- Now using the 'version number' of EPG events to avoid unnecessary work.
- Channel data is now automatically derived from the DVB data stream (inspired
  by the 'autopid' patch from Andreas Schultz).
- The current channel is now automatically re-tuned if the PIDs or other settings
  change. If a recording is going on on a channel that has a change in its
  settings, the recording will be stopped and immediately restarted to use the
  new channel settings.
- EPG events now use the complete channel ID with NID, TID and SID.
- Channel names in 'channels.conf' can now have a short form, as provided
  by some tv stations (see man vdr(5)). Currently channels that provide short
  names in addition to long ones are listed in the OSD as "short,long name",
  as in "RTL,RTL Television". The short names will be used explicitly later.
- The Ca parameter in 'channels.conf' has been extended and now contains all the
  CA system ids for the given channel. When switching to a channel VDR now tests
  for a device that provides one of these CA system ids. The devices automatically
  get their supported ids from the CI handler.
- The values in 'ca.conf' are currently without any real meaning. Whether or not
  a channel with conditional access can be received is now determined automatically
  by evaluating its CA descriptors and comparing them to the CA system ids
  provided by the installed CAM. Only the special values 1-16 are used to assign
  a channel to a particular device.
- Increased the maximum number of possible OSD colors to 256.
- Limited the line length in the EPG bugfix report, which appears to fix a buffer
  overflow that caused a crash when cleaning up the EPG data (at 05:00 in the
  morning).

1 files changed, 392 insertions, 0 deletions

diff --git a/libsi/si.h b/libsi/si.h
new file mode 100644
index 0000000..31d17cb
--- /dev/null
+++ b/libsi/si.h
@@ -0,0 +1,392 @@
+/***************************************************************************
+ *       Copyright (c) 2003 by Marcel Wiesweg                              *
+ *                                                                         *
+ *   This program is free software; you can redistribute it and/or modify  *
+ *   it under the terms of the GNU General Public License as published by  *
+ *   the Free Software Foundation; either version 2 of the License, or     *
+ *   (at your option) any later version.                                   *
+ *                                                                         *
+ *   $Id: si.h 1.3 2003/12/26 14:09:30 kls Exp $
+ *                                                                         *
+ ***************************************************************************/
+
+#ifndef LIBSI_SI_H
+#define LIBSI_SI_H
+
+#include <stdint.h>
+
+#include "util.h"
+#include "headers.h"
+
+namespace SI {
+
+enum TableId { TableIdPAT = 0x00, //program association section
+               TableIdCAT = 0x01, //conditional access section
+               TableIdPMT = 0x02, //program map section
+               TableIdTSDT = 0x03,//transport stream description section
+               TableIdNIT = 0x40, //network information, actual network section
+               TableIdNIT_other  = 0x41, //network information section, other network
+               TableIdSDT = 0x42, //service description section
+               TableIdSDT_other  = 0x46,
+               TableIdBAT = 0x46, //bouquet association section
+               TableIdEIT_presentFollowing = 0x4E, //event information section
+               TableIdEIT_presentFollowing_other = 0x4F,
+               //range from 0x50 to 0x5F
+               TableIdEIT_schedule_first = 0x50,
+               TableIdEIT_schedule_last = 0x5F,
+               //range from 0x60 to 0x6F
+               TableIdEIT_schedule_Other_first = 0x60,
+               TableIdEIT_schedule_Other_fast = 0x6F,
+               TableIdTDT = 0x70, //time date section
+               TableIdRST = 0x71, //running status section
+               TableIdST  = 0x72, //stuffing section
+               TableIdTOT = 0x73, //time offset section
+               TableIdDIT = 0x7E, //discontinuity information section
+               TableIdSIT = 0x7F, //service information section
+               TableIdAIT = 0x74  //application information section
+             };
+
+
+enum DescriptorTag {
+  // defined by ISO/IEC 13818-1
+               VideoStreamDescriptorTag = 0x02,
+               AudioStreamDescriptorTag = 0x03,
+               HierarchyDescriptorTag = 0x04,
+               RegistrationDescriptorTag = 0x05,
+               DataStreamAlignmentDescriptorTag = 0x06,
+               TargetBackgroundGridDescriptorTag = 0x07,
+               VideoWindowDescriptorTag = 0x08,
+               CaDescriptorTag = 0x09,
+               ISO639LanguageDescriptorTag = 0x0A,
+               SystemClockDescriptorTag = 0x0B,
+               MultiplexBufferUtilizationDescriptorTag = 0x0C,
+               CopyrightDescriptorTag = 0x0D,
+               MaximumBitrateDescriptorTag = 0x0E,
+               PrivateDataIndicatorDescriptorTag = 0x0F,
+               SmoothingBufferDescriptorTag = 0x10,
+               STDDescriptorTag = 0x11,
+               IBPDescriptorTag = 0x12,
+  // defined by ISO-13818-6 (DSM-CC)
+               CarouselIdentifierDescriptorTag = 0x13,
+               // 0x14 - 0x3F  Reserved
+  // defined by ETSI (EN 300 468)
+               NetworkNameDescriptorTag = 0x40,
+               ServiceListDescriptorTag = 0x41,
+               StuffingDescriptorTag = 0x42,
+               SatelliteDeliverySystemDescriptorTag = 0x43,
+               CableDeliverySystemDescriptorTag = 0x44,
+               VBIDataDescriptorTag = 0x45,
+               VBITeletextDescriptorTag = 0x46,
+               BouquetNameDescriptorTag = 0x47,
+               ServiceDescriptorTag = 0x48,
+               CountryAvailabilityDescriptorTag = 0x49,
+               LinkageDescriptorTag = 0x4A,
+               NVODReferenceDescriptorTag = 0x4B,
+               TimeShiftedServiceDescriptorTag = 0x4C,
+               ShortEventDescriptorTag = 0x4D,
+               ExtendedEventDescriptorTag = 0x4E,
+               TimeShiftedEventDescriptorTag = 0x4F,
+               ComponentDescriptorTag = 0x50,
+               MocaicDescriptorTag = 0x51,
+               StreamIdentifierDescriptorTag = 0x52,
+               CaIdentifierDescriptorTag = 0x53,
+               ContentDescriptorTag = 0x54,
+               ParentalRatingDescriptorTag = 0x55,
+               TeletextDescriptorTag = 0x56,
+               TelephoneDescriptorTag = 0x57,
+               LocalTimeOffsetDescriptorTag = 0x58,
+               SubtitlingDescriptorTag = 0x59,
+               TerrestrialDeliverySystemDescriptorTag = 0x5A,
+               MultilingualNetworkNameDescriptorTag = 0x5B,
+               MultilingualBouquetNameDescriptorTag = 0x5C,
+               MultilingualServiceNameDescriptorTag = 0x5D,
+               MultilingualComponentDescriptorTag = 0x5E,
+               PrivateDataSpecifierDescriptorTag = 0x5F,
+               ServiceMoveDescriptorTag = 0x60,
+               ShortSmoothingBufferDescriptorTag = 0x61,
+               FrequencyListDescriptorTag = 0x62,
+               PartialTransportStreamDescriptorTag = 0x63,
+               DataBroadcastDescriptorTag = 0x64,
+               CaSystemDescriptorTag = 0x65,
+               DataBroadcastIdDescriptorTag = 0x66,
+               TransportStreamDescriptorTag = 0x67,
+               DSNGDescriptorTag = 0x68,
+               PDCDescriptorTag = 0x69,
+               AC3DescriptorTag = 0x6A,
+               AncillaryDataDescriptorTag = 0x6B,
+               CellListDescriptorTag = 0x6C,
+               CellFrequencyLinkDescriptorTag = 0x6D,
+               AnnouncementSupportDescriptorTag = 0x6E,
+               ApplicationSignallingDescriptorTag = 0x6F,
+               AdaptationFieldDataDescriptorTag = 0x70,
+               ServiceIdentifierDescriptorTag = 0x71,
+               ServiceAvailabilityDescriptorTag = 0x72,
+ // Defined by ETSI TS 102 812 (MHP)
+               // They once again start with 0x00 (see page 234, MHP specification)
+               MHP_ApplicationDescriptorTag = 0x00,
+               MHP_ApplicationNameDescriptorTag = 0x01,
+               MHP_TransportProtocolDescriptorTag = 0x02,
+               MHP_DVBJApplicationDescriptorTag = 0x03,
+               MHP_DVBJApplicationLocationDescriptorTag = 0x04,
+               // 0x05 - 0x0A is unimplemented this library
+               MHP_ExternalApplicationAuthorisationDescriptorTag = 0x05,
+               MHP_IPv4RoutingDescriptorTag = 0x06,
+               MHP_IPv6RoutingDescriptorTag = 0x07,
+               MHP_DVBHTMLApplicationDescriptorTag = 0x08,
+               MHP_DVBHTMLApplicationLocationDescriptorTag = 0x09,
+               MHP_DVBHTMLApplicationBoundaryDescriptorTag = 0x0A,
+               MHP_ApplicationIconsDescriptorTag = 0x0B,
+               MHP_PrefetchDescriptorTag = 0x0C,
+               MHP_DelegatedApplicationDescriptorTag = 0x0E,
+               MHP_ApplicationStorageDescriptorTag = 0x10,
+
+               //a descriptor currently unimplemented in this library
+               //the actual value 0xFF is "forbidden" according to the spec.
+               UnimplementedDescriptorTag = 0xFF
+};
+
+enum DescriptorTagDomain { SI, MHP };
+
+enum RunningStatus { RunningStatusUndefined = 0,
+                     RunningStatusNotRunning = 1,
+                     RunningStatusStartsInAFewSeconds = 2,
+                     RunningStatusPausing = 3,
+                     RunningStatusRunning = 4
+                   };
+
+/* Some principles:
+   - Objects that return references to other objects contained in their data must make sure
+     that the returned objects have been parsed.
+     (the Loop subclasses take care of that.)
+     Note that this does not apply to Loops and Strings (their are never returned by reference, BTW).
+*/
+
+class Object : public Parsable {
+public:
+   Object();
+   Object(CharArray &d);
+   //can only be called once since data is immutable
+   void setData(const unsigned char*data, unsigned int size, bool doCopy=true);
+   virtual int getLength() = 0;
+protected:
+   CharArray data;
+   //is protected - not used for sections
+   template <class T> friend class StructureLoop;
+   void setData(CharArray &d);
+};
+
+class Section : public Object {
+public:
+   //convenience: sets data and parses if doParse
+   Section(const unsigned char *data, bool doCopy=true);
+   Section() {}
+   TableId getTableId() const;
+   virtual int getLength();
+
+   static int getLength(const unsigned char *d);
+   static TableId getTableId(const unsigned char *d);
+};
+
+class CRCSection : public Section {
+public:
+   //convenience: sets data and parses if doParse
+   CRCSection(const unsigned char *data, bool doCopy=true) : Section(data, doCopy) {}
+   CRCSection() {}
+   bool isValid();
+   //convenience: isValid+CheckParse
+   bool CheckCRCAndParse();
+};
+
+/* A section which has the ExtendedSectionHeader
+   (section_syntax_indicator==1) */
+class NumberedSection : public CRCSection {
+public:
+   NumberedSection(const unsigned char *data, bool doCopy=true) : CRCSection(data, doCopy) {}
+   NumberedSection() {}
+   bool getCurrentNextIndicator() const;
+   int getVersionNumber() const;
+   int getSectionNumber() const;
+   int getLastSectionNumber() const;
+   bool moreThanOneSection()  const { return getLastSectionNumber()>1; }
+};
+
+class VariableLengthPart : public Object {
+public:
+   //never forget to call this
+   void setData(CharArray d, int l) { Object::setData(d); length=l; }
+   //convenience method
+   void setDataAndOffset(CharArray d, int l, unsigned int &offset) { Object::setData(d); length=l; offset+=l; }
+   virtual int getLength() { return length; }
+private:
+   int length;
+};
+
+class LoopElement : public Object {
+};
+
+class SubStructure : public LoopElement {
+};
+
+class Descriptor : public LoopElement {
+public:
+   virtual int getLength();
+   DescriptorTag getDescriptorTag() const;
+
+   static int getLength(const unsigned char *d);
+   static DescriptorTag getDescriptorTag(const unsigned char *d);
+protected:
+   friend class DescriptorLoop;
+   //returns a subclass of descriptor according to the data given.
+   //The object is allocated with new and must be delete'd.
+   //setData() will have been called, CheckParse() not.
+   //Never returns null - maybe the UnimplementedDescriptor.
+   static Descriptor *getDescriptor(CharArray d, DescriptorTagDomain domain);
+};
+
+class Loop : public VariableLengthPart {
+public:
+   class Iterator {
+   public:
+      Iterator() { i=0; }
+      void reset() { i=0; }
+   private:
+      template <class T> friend class StructureLoop;
+      friend class DescriptorLoop;
+      template <class T> friend class TypeLoop;
+      int i;
+   };
+protected:
+   virtual void Parse() {}
+};
+
+//contains LoopElements of one type only
+template <class T> class StructureLoop : public Loop {
+public:
+   //currently you must use a while-loop testing for hasNext()
+   //i must be 0 to get the first descriptor (with the first call)
+   T getNext(Iterator &it)
+      {
+         CharArray d=data;
+         d.addOffset(it.i);
+         T ret;
+         ret.setData(d);
+         ret.CheckParse();
+         it.i+=ret.getLength();
+         return ret;
+      }
+   T* getNextAsPointer(Iterator &it)
+      {
+         if (getLength() <= it.i)
+            return 0;
+         CharArray d=data;
+         d.addOffset(it.i);
+         T *ret=new T();
+         ret->setData(d);
+         ret->CheckParse();
+         it.i+=ret->getLength();
+         return ret;
+      }
+   bool hasNext(Iterator &it) { return getLength() > it.i; }
+};
+
+//contains descriptors of different types
+class DescriptorLoop : public Loop {
+public:
+   DescriptorLoop() { domain=SI; }
+   //i must be 0 to get the first descriptor (with the first call)
+   //All returned descriptors must be delete'd.
+   //returns null if no more descriptors available
+   Descriptor *getNext(Iterator &it);
+   //return the next descriptor with given tag, or 0 if not available.
+   //if the descriptor found is not implemented,
+   // an UnimplementedDescriptor will be returned if returnUnimplemetedDescriptor==true,
+   // 0 will be returned if returnUnimplemetedDescriptor==false
+   Descriptor *getNext(Iterator &it, DescriptorTag tag, bool returnUnimplemetedDescriptor=false);
+   //return the next descriptor with one of the given tags, or 0 if not available.
+   Descriptor *getNext(Iterator &it, DescriptorTag *tags, int arrayLength, bool returnUnimplemetedDescriptor=false);
+protected:
+   Descriptor *createDescriptor(int &i);
+   DescriptorTagDomain domain;
+};
+
+typedef uint8_t   EightBit;
+typedef uint16_t  SixteenBit;
+typedef uint32_t  ThirtyTwoBit;
+typedef uint64_t  SixtyFourBit;
+
+template <typename T> class TypeLoop : public Loop {
+public:
+   int getCount() const { return getLength()/sizeof(T); }
+   T operator[](const unsigned int index) const
+      {
+         switch (sizeof(T)) {
+         case 1:
+            return data[index];
+         case 2:
+            return data.TwoBytes(index);
+         case 4:
+            return data.FourBytes(index);
+         case 8:
+            return (SixtyFourBit(data.FourBytes(index)) << 32) | data.FourBytes(index+4);
+         }
+      }
+   T getNext(Iterator &it) const
+      {
+         T ret=operator[](it.i);
+         it.i+=sizeof(T);
+         return ret;
+      }
+   bool hasNext(Iterator &it) { return getLength() > it.i; }
+};
+
+class MHP_DescriptorLoop : public DescriptorLoop {
+public:
+   MHP_DescriptorLoop() { domain=MHP; }
+};
+
+//The content of the ExtendedEventDescriptor may be split over several
+//descriptors if the text is longer than 256 bytes.
+//The following classes provide base functionality to handle this case.
+class GroupDescriptor : public Descriptor {
+public:
+   virtual int getDescriptorNumber() = 0;
+   virtual int getLastDescriptorNumber() = 0;
+};
+
+class DescriptorGroup {
+public:
+   DescriptorGroup(bool deleteOnDesctruction=true);
+   ~DescriptorGroup();
+   void Add(GroupDescriptor *d);
+   void Delete();
+   int getLength() { return length; }
+   GroupDescriptor **getDescriptors() { return array; }
+   bool isComplete(); //if all descriptors have been added
+protected:
+   int length;
+   GroupDescriptor **array;
+   bool deleteOnDesctruction;
+};
+
+class String : public VariableLengthPart {
+public:
+   //A note to the length: getLength() returns the length of the raw data.
+   //The text may be shorter. Its length can be obtained with one of the
+   //above functions and strlen.
+
+   //returns text. Data is allocated with new and must be delete'd by the user.
+   char *getText();
+   //copies text into given buffer.
+   //a buffer of size getLength()+1 is guaranteed to be sufficiently large.
+   //In most descriptors the string length is an 8-bit field,
+   //so the maximum there is 256.
+   //returns the given buffer for convenience.
+   char * getText(char *buffer);
+protected:
+   virtual void Parse() {}
+   void decodeText(char *buffer);
+};
+
+} //end of namespace
+
+#endif //LIBSI_SI_H