demux: don't process obscure skipped packets

When doing a seek to the end of the cache, ds->skip_to_keyframe can be
set to true. Then some packets passed to add_packet_locked() may have to
be skipped. In some aspects, the skipped packet was still treated as if
it was going to be returned to the reader.

It almost doesn't matter though: it only caused a redundant wakeup_ds()
call, and could pass the packet to the stream recorder. Fix it anyway.

1 files changed, 5 insertions, 0 deletions

diff --git a/demux/demux.c b/demux/demux.c
index ff1573dca5..1a2495e8a9 100644
--- a/demux/demux.c
+++ b/demux/demux.c
@@ -1516,6 +1516,11 @@ static void add_packet_locked(struct sh_stream *stream, demux_packet_t *dp)
         }
     }
 
+    // Don't process the packet further if it's skipped by the previous seek
+    // (see reader_head check/assignment above).
+    if (!ds->reader_head)
+        return;
+
     // (should preferably be outside of the lock)
     if (in->enable_recording && !in->recorder &&
         in->opts->record_file && in->opts->record_file[0])