Set the configuration of the pool. If the pool is already configured, and the configuration haven't change, this function will return TRUE. If the pool is active, this method will return FALSE and active configuration will remain. Buffers allocated form this pool must be returned or else this function will do nothing and return FALSE.
config is a gstreamer.Structure that contains the configuration parameters for the pool. A default and mandatory set of parameters can be configured with Buffer.poolConfigSetParams, Buffer.poolConfigSetAllocator and Buffer.poolConfigAddOption.
If the parameters in config can not be set exactly, this function returns FALSE and will try to update as much state as possible. The new state can then be retrieved and refined with Buffer.poolGetConfig.
This function takes ownership of config.