signal callback delegate or function to connect
bool callback(ulong offset, gstapp.app_src.AppSrc appSrc)
offset the offset to seek to (optional)
appSrc the instance the signal is connected to (optional)
Returns true if the seek succeeded.
Yes.After to execute callback after default handler, No.After to execute before (default)
Signal ID
Connect to SeekData signal.
Seek to the given offset. The next push-buffer should produce buffers from the new offset. This callback is only called for seekable stream types.