Provides input data (or NULL to clear any remaining data)
to subclass. Input data ref management is performed by
base class, subclass should not care or intervene,
and input data is only valid until next call to base class,
most notably a call to gstaudio.audio_decoder.AudioDecoder.finishFrame.
Provides input data (or NULL to clear any remaining data) to subclass. Input data ref management is performed by base class, subclass should not care or intervene, and input data is only valid until next call to base class, most notably a call to gstaudio.audio_decoder.AudioDecoder.finishFrame.