GstAutoplug Provide automatic element selection. The autoplugger can select a list of elements that are needed to convert a certain GstCaps to another one. The maximum cost of a certain connection. Calculate the cost between two elements. @src: the source element @dest: the destination element @data: optional user data @Returns: the cost for a connection between the two elements Get a list of all elements. These elements will be used in autoplugging. @data: user data @Returns: a GList of elements @srccaps: @sinkcaps: @Returns: @srcpad: @sinkpad: @Returns: @srccaps: @sinkcaps: @Returns: