demux: adaptative: provide playlist duration range for updates

modules/demux/adaptative/playlist/AbstractPlaylist.cpp

@@ -130,6 +130,13 @@ void AbstractPlaylist::getTimeLinesBoundaries(mtime_t *min, mtime_t *max) const
     }
 }
 
+void AbstractPlaylist::getPlaylistDurationsRange(mtime_t *min, mtime_t *max) const
+{
+    *min = *max = 0;
+    for(size_t i = 0; i < periods.size(); i++)
+        periods.at(i)->getDurationsRange(min, max);
+}
+
 void AbstractPlaylist::mergeWith(AbstractPlaylist *updatedAbstractPlaylist, mtime_t prunebarrier)
 {
     availabilityEndTime.Set(updatedAbstractPlaylist->availabilityEndTime.Get());

modules/demux/adaptative/playlist/AbstractPlaylist.hpp

@@ -55,6 +55,7 @@ namespace adaptative
 
                 void                mergeWith(AbstractPlaylist *, mtime_t = 0);
                 void                getTimeLinesBoundaries(mtime_t *, mtime_t *) const;
+                void                getPlaylistDurationsRange(mtime_t *, mtime_t *) const;
 
                 Property<time_t>                    duration;
                 Property<time_t>                    playbackStart;

modules/demux/adaptative/playlist/SegmentInformation.cpp

@@ -251,6 +251,31 @@ void SegmentInformation::collectTimelines(std::vector<SegmentTimeline *> *timeli
         (*it)->collectTimelines(timelines);
 }
 
+void SegmentInformation::getDurationsRange(mtime_t *min, mtime_t *max) const
+{
+    /* FIXME: cache stuff in segment holders */
+    std::vector<ISegment *> seglist = getSegments(INFOTYPE_MEDIA);
+    std::vector<ISegment *>::const_iterator it;
+    mtime_t total = 0;
+    for(it = seglist.begin(); it != seglist.end(); ++it)
+    {
+        const mtime_t duration = (*it)->duration.Get();
+        if(duration)
+        {
+            total += duration;
+
+            if (!*min || duration < *min)
+                *min = duration;
+        }
+    }
+
+    if(total > *max)
+        *max = total;
+
+    for(size_t i=0; i<childs.size(); i++)
+        childs.at(i)->getDurationsRange(min, max);
+}
+
 void SegmentInformation::mergeWith(SegmentInformation *updated, mtime_t prunetime)
 {
     /* Support Segment List for now */

modules/demux/adaptative/playlist/SegmentInformation.hpp

@@ -78,6 +78,7 @@ namespace adaptative
                 bool getSegmentNumberByTime(mtime_t, uint64_t *) const;
                 mtime_t getPlaybackTimeBySegmentNumber(uint64_t) const;
                 void collectTimelines(std::vector<SegmentTimeline *> *) const;
+                void getDurationsRange(mtime_t *, mtime_t *) const;
                 virtual void mergeWith(SegmentInformation *, mtime_t);
 
             protected: