Playback buffer notification callbacks

[ls ag]

I have close to zero experience and knowledge of gstreamer. However, I have very extensive experience with other audio playback framework, on windows and android being some of them. 

How with gstreamer do I define a callback that will be called when the sound card has played the audio buffer previously sent to it? Equivalent to Windows waveOutProc and Android AudioTrack.OnPlaybackPositionUpdateListener.onMarkerReached? 		 	   		  
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