Added LinkageDescriptor handling to 'libsi'

HISTORY

@@ -2572,7 +2572,8 @@ Video Disk Recorder Revision History
   branches are tested, cable and terrestrial need to be tested by somebody who
   actually has such equipment.
 
-2004-01-11: Version 1.3.2
+2004-01-12: Version 1.3.2
 
 - Fixed resetting the EPG data versions after changing the preferred languages
   (thanks to Teemu Rantanen for reporting this one and helping to debug it).
+- Added LinkageDescriptor handling to 'libsi' (thanks to Marcel Wiesweg).

libsi/descriptor.c

@@ -6,7 +6,7 @@
  *   the Free Software Foundation; either version 2 of the License, or     *
  *   (at your option) any later version.                                   *
  *                                                                         *
- *   $Id: descriptor.c 1.2 2003/12/13 10:42:05 kls Exp $
+ *   $Id: descriptor.c 1.3 2004/01/12 16:17:20 kls Exp $
  *                                                                         *
  ***************************************************************************/
 
@@ -492,6 +492,28 @@ void MultilingualServiceNameDescriptor::Name::Parse() {
    name.setData(data+offset, mid->service_name_length);
 }
 
+void LinkageDescriptor::Parse() {
+   unsigned int offset=0;
+   data.setPointerAndOffset<const descr_linkage>(s, offset);
+   privateData.assign(data.getData(offset), getLength()-offset);
+}
+
+int LinkageDescriptor::getTransportStreamId() const {
+   return HILO(s->transport_stream_id);
+}
+
+int LinkageDescriptor::getOriginalNetworkId() const {
+   return HILO(s->original_network_id);
+}
+
+int LinkageDescriptor::getServiceId() const {
+   return HILO(s->service_id);
+}
+
+LinkageType LinkageDescriptor::getLinkageType() const {
+   return (LinkageType)s->linkage_type;
+}
+
 void ApplicationSignallingDescriptor::Parse() {
    entryLoop.setData(data+sizeof(descr_application_signalling), getLength()-sizeof(descr_application_signalling));
 }

libsi/descriptor.h

@@ -6,7 +6,7 @@
  *   the Free Software Foundation; either version 2 of the License, or     *
  *   (at your option) any later version.                                   *
  *                                                                         *
- *   $Id: descriptor.h 1.2 2003/12/13 10:42:08 kls Exp $
+ *   $Id: descriptor.h 1.3 2004/01/12 16:17:47 kls Exp $
  *                                                                         *
  ***************************************************************************/
 
@@ -361,6 +361,19 @@ protected:
    virtual void Parse();
 };
 
+class LinkageDescriptor : public Descriptor {
+public:
+   int getTransportStreamId() const;
+   int getOriginalNetworkId() const;
+   int getServiceId() const;
+   LinkageType getLinkageType() const;
+   CharArray privateData;
+protected:
+   virtual void Parse();
+private:
+   const descr_linkage *s;
+};
+
 //a descriptor currently unimplemented in this library
 class UnimplementedDescriptor : public Descriptor {
 protected:

libsi/si.c

@@ -6,7 +6,7 @@
  *   the Free Software Foundation; either version 2 of the License, or     *
  *   (at your option) any later version.                                   *
  *                                                                         *
- *   $Id: si.c 1.4 2004/01/05 11:04:17 kls Exp $
+ *   $Id: si.c 1.5 2004/01/12 22:19:34 kls Exp $
  *                                                                         *
  ***************************************************************************/
 
@@ -320,6 +320,9 @@ Descriptor *Descriptor::getDescriptor(CharArray da, DescriptorTagDomain domain)
          case ApplicationSignallingDescriptorTag:
             d=new ApplicationSignallingDescriptor();
             break;
+         case LinkageDescriptorTag:
+            d=new LinkageDescriptor();
+            break;
 
          //note that it is no problem to implement one
          //of the unimplemented descriptors.
@@ -348,7 +351,6 @@ Descriptor *Descriptor::getDescriptor(CharArray da, DescriptorTagDomain domain)
          case VBITeletextDescriptorTag:
          case CountryAvailabilityDescriptorTag:
          case MocaicDescriptorTag:
-         case LinkageDescriptorTag:
          case TeletextDescriptorTag:
          case TelephoneDescriptorTag:
          case LocalTimeOffsetDescriptorTag:

libsi/si.h

@@ -6,7 +6,7 @@
  *   the Free Software Foundation; either version 2 of the License, or     *
  *   (at your option) any later version.                                   *
  *                                                                         *
- *   $Id: si.h 1.5 2004/01/09 15:59:53 kls Exp $
+ *   $Id: si.h 1.6 2004/01/12 16:19:11 kls Exp $
  *                                                                         *
  ***************************************************************************/
 
@@ -154,6 +154,18 @@ enum RunningStatus { RunningStatusUndefined = 0,
                      RunningStatusRunning = 4
                    };
 
+enum LinkageType { LinkageTypeInformationService = 0x01,
+                   LinkageTypeEPGService = 0x02,
+                   LinkageTypeCaReplacementService = 0x03,
+                   LinkageTypeTSContainingCompleteNetworkBouquetSi = 0x04,
+                   LinkageTypeServiceReplacementService = 0x05,
+                   LinkageTypeDataBroadcastService = 0x06,
+                   LinkageTypeRCSMap = 0x07,
+                   LinkageTypeMobileHandover = 0x08,
+                   LinkageTypeSystemSoftwareUpdateService = 0x09,
+                   LinkageTypeTSContainingSsuBatOrNit = 0x0A
+                 };
+
 /* Some principles:
    - Objects that return references to other objects contained in their data must make sure
      that the returned objects have been parsed.
@@ -167,6 +179,7 @@ public:
    Object(CharArray &d);
    //can only be called once since data is immutable
    void setData(const unsigned char*data, unsigned int size, bool doCopy=true);
+   CharArray getData() { return data; }
    virtual int getLength() = 0;
 protected:
    CharArray data;
@@ -224,9 +237,6 @@ private:
 class LoopElement : public Object {
 };
 
-class SubStructure : public LoopElement {
-};
-
 class Descriptor : public LoopElement {
 public:
    virtual int getLength();