The item size is vlen * sizeof (type), so you are seeing 16 * 512 "samples".
On Wed, Apr 20, 2022 at 1:44 PM George Edwards <gedwards....@gmail.com> wrote: > Hello GNURadio Community, > > I have written a C++ OOT "sync" block with vector input and vector output > (data type float). I wrote a line in my program to print the value of > noutput_items on each GRC flow graph iteration and it alternately prints > the values 15 and 16. This is surprising!!! I was expecting this value to > be the 512, the number of elements in each input/output vector that I > designed the OOT to operate at. In my OOT design, the input/output > signatures were set to 512 floating point elements. In the GRC Flow graph > my block is fed by a stream to vector block (which brings in vectors of > 512 samples) and my block outputs its data to a vector to stream block > (which takes a vector of 512 elements and converts to a data stream). > > I was under the impression that the parameter noutput_items in the > work(...) function for an OOT sync block with vector input and output provided > the number of elements in each output vector. > > I will appreciate any insight into this issue. > > Thanks! > George > > > >
