From 14a55dc73dfed4bc2e0c0ae40b6e4a505b9ac52e Mon Sep 17 00:00:00 2001
From: Hans Ole Hatzel <hohatzel@jusst.de>
Date: Wed, 18 Dec 2019 12:07:42 +0100
Subject: [PATCH] gstreamer-base/basesink: Provide default implementation for
 render

We need some classes derived from `BaseSink` to not enforce render being
implemented.

An example of this is AudioSink which only requires the user to
implement `write` but not `render`, so the default implementation
of render needs to be called.
---
 gstreamer-base/src/subclass/base_sink.rs | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/gstreamer-base/src/subclass/base_sink.rs b/gstreamer-base/src/subclass/base_sink.rs
index 33c477541..42bd7883f 100644
--- a/gstreamer-base/src/subclass/base_sink.rs
+++ b/gstreamer-base/src/subclass/base_sink.rs
@@ -35,7 +35,9 @@ pub trait BaseSinkImpl: BaseSinkImplExt + ElementImpl + Send + Sync + 'static {
         &self,
         element: &BaseSink,
         buffer: &gst::Buffer,
-    ) -> Result<gst::FlowSuccess, gst::FlowError>;
+    ) -> Result<gst::FlowSuccess, gst::FlowError> {
+        self.parent_render(element, buffer)
+    }
 
     fn prepare(
         &self,