On Fri, Feb 22, 2013 at 09:09:19AM -0500, Tom Rondeau wrote: > > #### > > class file_writer(gr.sync_block): > > ## CTOR > > # > > def __init__(self, filename, vec_size): > > gr.sync_block.__init__( > > self, > > "file name block", > > in_sig = [np.dtype((np.float32, vec_size))], > > out_sig = None > > ) > > > > self._fd = open(filename, 'w') > > self._filename = filename > > > > > > def work(self, input_items, output_items): > > in0 = input_items[0] > > > > print "###### ", len(in0) > > print in0 > > > > return len(output_items) > > What is the length of output_items? Because you don't have an output > buffer attached to this block, I'd be concerned that len(output_items) > == 0, so you're telling the scheduler that you aren't consuming any > data. Maybe just replace that last line with 'return > len(input_items)'?
It's probably 'len(in0)', as len(input_items) would return the number of input ports. 'len(output_items[0])' would probably also work. MB -- Karlsruhe Institute of Technology (KIT) Communications Engineering Lab (CEL) Dipl.-Ing. Martin Braun Research Associate Kaiserstraße 12 Building 05.01 76131 Karlsruhe Phone: +49 721 608-43790 Fax: +49 721 608-46071 www.cel.kit.edu KIT -- University of the State of Baden-Württemberg and National Laboratory of the Helmholtz Association
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