Pad Source pad_source Num Outputs nports 1 int Output Type type enum Complex complex size:gr.sizeof_gr_complex Float float size:gr.sizeof_float Int int size:gr.sizeof_int Short short size:gr.sizeof_short Byte byte size:gr.sizeof_char Vec Length vlen 1 int $vlen > 0 0 < $nports out $type $vlen $nports This is a source pad block for creating hierarchical flow graphs. \ The outputs of this block will become the inputs to this flow graph when it is instantiated as a hierarchical block. \ Limit one source pad block per flow graph. Remember to set the generate options to hier block.