flacdec: don't lose the first buffer after a seek

The flacdec API calls the write callback when performing a seek. We cannot yet
push out a buffer at that time so we must keep it and push it out later.
Flush out the upstream part of the pipeline when doing a seek.
Fixes #574275.

1 files changed, 1 insertions, 0 deletions

diff --git a/ext/flac/gstflacdec.h b/ext/flac/gstflacdec.h
index 100c4e0b..1b706bca 100644
--- a/ext/flac/gstflacdec.h
+++ b/ext/flac/gstflacdec.h
@@ -74,6 +74,7 @@ struct _GstFlacDec {
                                * samples/audio frames (DEFAULT format) */
   gboolean       running;
   gboolean       discont;
+  GstBuffer     *pending;     /* pending buffer, produced in seek */
   GstEvent      *close_segment;
   GstEvent      *start_segment;
   GstTagList    *tags;