This function will call installed block probes before triggering any
installed data probes.
The function proceeds calling Pad.chain on the peer pad and returns
the value from that function. If pad has no peer, GST_FLOW_NOT_LINKED will
be returned.
In all cases, success or failure, the caller loses its reference to buffer
after calling this function.
Pushes a buffer to the peer of pad.
This function will call installed block probes before triggering any installed data probes.
The function proceeds calling Pad.chain on the peer pad and returns the value from that function. If pad has no peer, GST_FLOW_NOT_LINKED will be returned.
In all cases, success or failure, the caller loses its reference to buffer after calling this function.