On Thu, Sep 29, 2011 at 04:14:04PM +0200, Mattia Rizzi wrote: > Hello, > > i have a block that takes 3 bytes of data in and output 4bytes of data (3:4). > > It’s possible to generate, sometimes, extra output? > > I mean, sometimes it take 3 bytes and output 5 bytes. It’s possible? How i > tell > to the scheduler?
That's possible if you create a gr_block and use the general_work() function (so don't derive from a sync_interpolator). The general_work() function lets you manually set how many bytes were consumed and how many were written to the output buffer. But you *must* check the output buffer's large enough. However, you sacrifice some performance and possibly some functionality of GNU Radio (e.g., IIRC, I don't think you could propagate stream tags automatically through this kind of block). Perhaps re-thinking your signal flow is more optimal. 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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