add new function to calculate ContainerDuration from IndexTableSegment

2 files changed, 20 insertions, 0 deletions

diff --git a/src/MXF.cpp b/src/MXF.cpp
index c5cc07e..813ee15 100755
--- a/src/MXF.cpp
+++ b/src/MXF.cpp
@@ -1231,6 +1231,25 @@ ASDCP::MXF::OPAtomIndexFooter::GetMDObjectsByType(const byte_t* ObjectID, std::l
 }
 
 //
+ui64_t
+ASDCP::MXF::OPAtomIndexFooter::ContainerDuration() const
+{
+  ui64_t container_duration = 0;
+  std::list<InterchangeObject*>::iterator li;
+  for ( li = m_PacketList->m_List.begin(); li != m_PacketList->m_List.end(); li++ )
+    {
+      IndexTableSegment *segment = dynamic_cast<IndexTableSegment*>(*li);
+
+      if ( segment != 0 )
+        {
+          container_duration += segment->IndexDuration;
+        }
+    }
+
+  return container_duration;
+}
+
+//
 ASDCP::Result_t
 ASDCP::MXF::OPAtomIndexFooter::Lookup(ui32_t frame_num, IndexTableSegment::IndexEntry& Entry) const
 {
diff --git a/src/MXF.h b/src/MXF.h
index d6e201a..ee0be96 100755
--- a/src/MXF.h
+++ b/src/MXF.h
@@ -486,6 +486,7 @@ namespace ASDCP
 	  virtual Result_t GetMDObjectByType(const byte_t*, InterchangeObject** = 0);
 	  virtual Result_t GetMDObjectsByType(const byte_t* ObjectID, std::list<InterchangeObject*>& ObjectList);
 
+          virtual ui64_t   ContainerDuration() const;
 	  virtual Result_t Lookup(ui32_t frame_num, IndexTableSegment::IndexEntry&) const;
 	  virtual void     PushIndexEntry(const IndexTableSegment::IndexEntry&);
 	  virtual void     SetDeltaParams(const IndexTableSegment::DeltaEntry&);