Added options to DTSC pull for controlling the buffer config. Made 8X target duration the default buffer size. Inputs now wait for INPUT_TIMEOUT *and* two biggestFragment durations, added a few helper functions to DTSC::Meta. Buffer now automatically sets segment size to min(configed_size, biggest_fragment/2) to prevent sudden reductions of fragment sizes by more than 50%

lib/dtsc.h

@@ -326,6 +326,8 @@ namespace DTSC {
       void toPrettyString(std::ostream & str, int indent = 0, int verbosity = 0);
       //members:
       std::map<unsigned int, Track> tracks;
+      Track & mainTrack();
+      uint32_t biggestFragment();
       bool vod;
       bool live;
       bool merged;