Event.parseBufferSize

void parseBufferSize(out gst.types.Format format, out long minsize, out long maxsize, out bool async)

Get the format, minsize, maxsize and async-flag in the buffersize event.

`format`	A pointer to store the format in
`minsize`	A pointer to store the minsize in
`maxsize`	A pointer to store the maxsize in
`async`	A pointer to store the async-flag in