The returned #GstGLAllocationParams will by null before the first successful
call to gst.buffer_pool.BufferPool.setConfig. Subsequent successful calls to
gst.buffer_pool.BufferPool.setConfig will cause this function to return a new
#GstGLAllocationParams which may or may not contain the same information.
The returned #GstGLAllocationParams will by null before the first successful call to gst.buffer_pool.BufferPool.setConfig. Subsequent successful calls to gst.buffer_pool.BufferPool.setConfig will cause this function to return a new #GstGLAllocationParams which may or may not contain the same information.