[gst-devel] A question about data passing inbetween 2 elements

[ecmproute]

How does data passing happen between 2 elements:
Element1:srcpad->sinkpad:Element2
1. srcpad copies the data to sinkpad
2. srcpad gives a reference of the buffer, which the sinkpad accesses

Which of the above 2 methods are followed in Gstreamer....or is there any 
other way being followed?

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Confused about which path to take in life?
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