demux: dash: don't expect new segment on end of timeline

static live with template+timeline never ended

modules/demux/adaptative/playlist/SegmentInformation.cpp

@@ -147,10 +147,12 @@ ISegment * SegmentInformation::getSegment(SegmentInfoType type, uint64_t pos) co
     if( size )
     {
         /* check if that's a template (fixme: find a better way) */
-        BaseSegmentTemplate *templ;
-        if( size == 1 && (templ = dynamic_cast<BaseSegmentTemplate*>(retSegments[0])) )
+        MediaSegmentTemplate *templ;
+        if( size == 1 && (templ = dynamic_cast<MediaSegmentTemplate*>(retSegments[0])) )
         {
-            return templ;
+            if(templ->segmentTimeline.Get() == NULL ||
+               templ->segmentTimeline.Get()->maxElementNumber() > pos)
+                return templ;
         }
         else if( pos < size )
         {

modules/demux/adaptative/playlist/SegmentTimeline.cpp

@@ -108,6 +108,17 @@ mtime_t SegmentTimeline::getScaledPlaybackTimeByElementNumber(uint64_t number) c
     return totalscaledtime;
 }
 
+size_t SegmentTimeline::maxElementNumber() const
+{
+    size_t count = 0;
+
+    std::list<Element *>::const_iterator it;
+    for(it = elements.begin(); it != elements.end(); it++)
+        count += (*it)->r + 1;
+
+    return pruned + count - 1;
+}
+
 size_t SegmentTimeline::prune(mtime_t time)
 {
     mtime_t scaled = time * inheritTimescale() / CLOCK_FREQ;

modules/demux/adaptative/playlist/SegmentTimeline.h

@@ -46,6 +46,7 @@ namespace adaptative
                 void addElement(mtime_t d, uint64_t r = 0, mtime_t t = 0);
                 uint64_t getElementNumberByScaledPlaybackTime(time_t) const;
                 mtime_t getScaledPlaybackTimeByElementNumber(uint64_t) const;
+                size_t maxElementNumber() const;
                 size_t prune(mtime_t);
                 void mergeWith(SegmentTimeline &);
                 mtime_t start() const;