appsink: Use a GMutex to control when we pull samples

We can only pull a new sample and write it out if the previous one has been
written, otherwise we get a segfault in SoupMessage.

1 files changed, 1 insertions, 0 deletions

diff --git a/src/lib.h b/src/lib.h
index 733212c..14ec096 100644
--- a/src/lib.h
+++ b/src/lib.h
@@ -34,6 +34,7 @@ struct _TranscodeClientCtx {
   SoupMessage *msg;
   GstElement *appsink;
   GstPad *ghostsinkpad;
+  GMutex can_write_chunk;
   gulong first_sample_handler_id;
   /* The transcode server context */
   TranscodeServerCtx *server_ctx;