demux_ts: Always replace PIDs when we parse a PMT

demux_ts currently assumes that PIDs for a service never change - BBC THREE
(amongst others) breaks this assumption. A PMT shouldn't change unless PIDs
change, so always reacquire PIDs whenever we parse a PMT; this should work
fine in the case when the PIDs do not change, and pick up the new PIDs
whenever a change happens

--HG--
extra : transplant_source : e%AB%EB%E1%CF%D8%1C%15%5E%DE%09%E4%3Dd%AB%E3f%FD%E5%9E

1 files changed, 9 insertions, 0 deletions

diff --git a/src/demuxers/demux_ts.c b/src/demuxers/demux_ts.c
index 80ad0acb1..67b2fbf2a 100644
--- a/src/demuxers/demux_ts.c
+++ b/src/demuxers/demux_ts.c
@@ -1239,6 +1239,15 @@ printf("Program Number is %i, looking for %i\n",program_number,this->program_num
     }
   }
 
+  /*
+   * Forget the current video, audio and subtitle PIDs; if the PMT has not
+   * changed, we'll pick them up again when we parse this PMT, while if the
+   * PMT has changed (e.g. an IPTV streamer that's just changed its source),
+   * we'll get new PIDs that we should follow.
+   */
+  this->audio_tracks_count = 0;
+  this->videoPid = INVALID_PID;
+  this->spu_pid = INVALID_PID;
 
   /*
    * ES definitions start here...we are going to learn upto one video