Call the parent impl of various vfuncs if not overridden

This was forgotten for a few types and would require each subclass to
implement them, even if a parent class already provided an
implementation.

gstreamer-audio/src/subclass/audio_sink.rs

@@ -37,7 +37,9 @@ pub trait AudioSinkImpl: AudioSinkImplExt + BaseSinkImpl + Send + Sync + 'static
         self.parent_unprepare(sink)
     }
 
-    fn write(&self, sink: &AudioSink, audio_data: &[u8]) -> Result<i32, LoggableError>;
+    fn write(&self, sink: &AudioSink, audio_data: &[u8]) -> Result<i32, LoggableError> {
+        self.parent_write(sink, audio_data)
+    }
 }
 
 pub trait AudioSinkImplExt {

gstreamer-audio/src/subclass/audio_src.rs

@@ -39,7 +39,9 @@ pub trait AudioSrcImpl: AudioSrcImplExt + BaseSrcImpl + Send + Sync + 'static {
         &self,
         src: &AudioSrc,
         audio_data: &mut [u8],
-    ) -> Result<(u32, gst::ClockTime), LoggableError>;
+    ) -> Result<(u32, gst::ClockTime), LoggableError> {
+        self.parent_read(src, audio_data)
+    }
 }
 
 pub trait AudioSrcImplExt {

gstreamer-base/src/subclass/aggregator.rs

@@ -103,7 +103,9 @@ pub trait AggregatorImpl: AggregatorImplExt + ElementImpl + Send + Sync + 'stati
         &self,
         aggregator: &Aggregator,
         timeout: bool,
-    ) -> Result<gst::FlowSuccess, gst::FlowError>;
+    ) -> Result<gst::FlowSuccess, gst::FlowError> {
+        self.parent_aggregate(aggregator, timeout)
+    }
 
     fn start(&self, aggregator: &Aggregator) -> Result<(), gst::ErrorMessage> {
         self.parent_start(aggregator)

gstreamer-base/src/subclass/base_parse.rs

@@ -49,7 +49,9 @@ pub trait BaseParseImpl: BaseParseImplExt + ElementImpl + Send + Sync + 'static
         element: &BaseParse,
         src_val: V,
         dest_format: gst::Format,
-    ) -> Option<gst::GenericFormattedValue>;
+    ) -> Option<gst::GenericFormattedValue> {
+        self.parent_convert(element, src_val, dest_format)
+    }
 }
 
 pub trait BaseParseImplExt {