fmp4: Use updated start_pts when checking stream filled

After calculating the earliest pts, the fragment_start_pts and
chunk_start_pts in State are updated. However, when checking if the
stream is filled, the previous start_pts (set to None) is used instead.
This means that chunk_filled and fragment_filled will be false the first
time aggregate() is called, assuming timeout is false, all_eos is false,
and the sinkpad is not EOS. This requires aggregate() having to be
called a second time before the first fragment is sent.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-rs/-/merge_requests/1207>

1 files changed, 3 insertions, 3 deletions

diff --git a/mux/fmp4/src/fmp4mux/imp.rs b/mux/fmp4/src/fmp4mux/imp.rs
index 38e48dd07..d96f01998 100644
--- a/mux/fmp4/src/fmp4mux/imp.rs
+++ b/mux/fmp4/src/fmp4mux/imp.rs
@@ -1117,9 +1117,6 @@ impl FMP4Mux {
             return;
         }
 
-        let fragment_start_pts = state.fragment_start_pts;
-        let chunk_start_pts = state.chunk_start_pts;
-
         // Calculate the earliest PTS after queueing input if we can now.
         let mut earliest_pts = None;
         let mut start_dts = None;
@@ -1228,6 +1225,9 @@ impl FMP4Mux {
             upstream_events.push((stream.sinkpad.clone(), fku));
         }
 
+        let fragment_start_pts = state.fragment_start_pts;
+        let chunk_start_pts = state.chunk_start_pts;
+
         // Check if any of the streams are already filled enough for the first chunk/fragment.
         for stream in &mut state.streams {
             self.check_stream_filled(