freemheg: Add InteractionChannel streaming from network URI's

This patch adds BBC iPlayer functionality to the MHEG library.

NB This patch must be applied in conjunction with that to MythPlayer
which supports Interactive TV program streams.

Refs #10019

Signed-off-by: Lawrence Rust <lvr@softsystem.co.uk>
Signed-off-by: Stuart Morgan <smorgan@mythtv.org>

mythtv/libs/libmythfreemheg/Actions.cpp

@@ -44,9 +44,9 @@
 class MHUnimplementedAction: public MHElemAction
 {
   public:
-    MHUnimplementedAction(int nTag): MHElemAction("")
+    MHUnimplementedAction(int nTag): MHElemAction(""), m_nTag(nTag)
     {
-        m_nTag = nTag;
+        MHLOG(MHLogWarning, QString("WARN Unimplemented action %1").arg(m_nTag) );
     }
     virtual void Initialise(MHParseNode *, MHEngine *) {}
     virtual void PrintMe(FILE *fd, int /*nTabs*/) const
@@ -297,7 +297,7 @@ void MHActionSequence::Initialise(MHParseNode *p, MHEngine *engine)
                 pAction = new MHUnimplementedAction(pElemAction->GetTagNo());
                 break; // Stream
             case C_SET_COUNTER_POSITION:
-                pAction = new MHUnimplementedAction(pElemAction->GetTagNo());
+                pAction = new MHSetCounterPosition;
                 break; // Stream
             case C_SET_COUNTER_TRIGGER:
                 pAction = new MHUnimplementedAction(pElemAction->GetTagNo());
@@ -357,7 +357,7 @@ void MHActionSequence::Initialise(MHParseNode *p, MHEngine *engine)
                 pAction = new MHSetSliderValue;
                 break;
             case C_SET_SPEED:
-                pAction = new MHUnimplementedAction(pElemAction->GetTagNo());
+                pAction = new MHSetSpeed;
                 break; // ?
             case C_SET_TIMER:
                 pAction = new MHSetTimer;
@@ -442,8 +442,16 @@ void MHActionSequence::Initialise(MHParseNode *p, MHEngine *engine)
                 pAction = new MHSetSliderParameters;
                 break;
 
+            // Added in ETSI ES 202 184 V2.1.1 (2010-01)
+            case C_GET_COUNTER_POSITION: // Stream position
+                pAction = new MHGetCounterPosition;
+                break;
+            case C_GET_COUNTER_MAX_POSITION: // Stream total size
+                pAction = new MHGetCounterMaxPosition;
+                break;
+
             default:
-                MHLOG(MHLogWarning, QString("Unknown action %1").arg(pElemAction->GetTagNo()));
+                MHLOG(MHLogWarning, QString("WARN Unknown action %1").arg(pElemAction->GetTagNo()));
                 // Future proofing: ignore any actions that we don't know about.
                 // Obviously these can only arise in the binary coding.
                 pAction = NULL;

mythtv/libs/libmythfreemheg/BaseClasses.cpp

@@ -588,6 +588,8 @@ void MHGenericObjectRef::GetValue(MHObjectRef &ref, MHEngine *engine) const
     }
     else
     {
+        // LVR - Hmm I don't think this is right. Should be: ref.Copy(m_Indirect);
+        // But it's used in several places so workaround in Stream::MHActionGenericObjectRefFix
         MHUnion result;
         MHRoot *pBase = engine->FindObject(m_Indirect);
         pBase->GetVariableValue(result, engine);

mythtv/libs/libmythfreemheg/BaseClasses.h

@@ -184,8 +184,8 @@ class MHGenericBase
 {
   public:
     MHObjectRef *GetReference(); // Return the indirect reference or fail if it's direct
-protected:
     bool    m_fIsDirect;
+protected:
     MHObjectRef m_Indirect;
 };