baseparse: fix reverse playback

... especially for all-keyframe (audio) cases.

diff --git a/libs/gst/base/gstbaseparse.c b/libs/gst/base/gstbaseparse.c
index 5a730fd7a19e5e8643ca938503bc8634f71a8cb8..34a5ae70e1f3dbc074353260b5fc3a3f363073b5 100644 (file)
--- a/libs/gst/base/gstbaseparse.c
+++ b/libs/gst/base/gstbaseparse.c
@@ -2181,12 +2181,11 @@ push:
         }
         seen_key = FALSE;
       }
-    } else {
       seen_delta = TRUE;
+    } else {
+      seen_key = TRUE;
     }
 
-    seen_key |= !GST_BUFFER_FLAG_IS_SET (buf, GST_BUFFER_FLAG_DELTA_UNIT);
-
     parse->priv->buffers_send =
         g_slist_prepend (parse->priv->buffers_send, buf);
     parse->priv->buffers_queued =