[Discuss-gnuradio] ninput_items from demodulator

[Fasika Alemayehu]

Hi all,

I have a module to demodulate packets received from a
file source, and it works fine. I want to have a fixed
number of inputs (1024) coming from the demodulator.
What i did is i override the forcast method of
gr_block.
void
  usbm::forecast (int noutput_items,
                      gr_vector_int
ninput_items_required)
  {
    unsigned ninputs = ninput_items_required.size ();
    for (unsigned i = 0; i < ninputs; i++)
      ninput_items_required[i] =1024 ;
  }

But the problem is that evenif i dont get less than
1024 items, the input varies with the differenc calls
to the method. 
Here is a sample of the input items from a demod
block.

number of items: 1027
------------------------------------------------------------------------------------------------------


number of items: 2047 
------------------------------------------------------------------------------------------------------


number of items: 1025 
------------------------------------------------------------------------------------------------------


number of items: 1024 
------------------------------------------------------------------------------------------------------


number of items: 2047 
------------------------------------------------------------------------------------------------------


number of items: 1024
------------------------------------------------------------------------------------------------------


number of items: 1026 
------------------------------------------------------------------------------------------------------


number of items: 2047 
------------------------------------------------------------------------------------------------------


number of items: 1025 
------------------------------------------------------------------------------------------------------


number of items: 2053 
------------------------------------------------------------------------------------------------------


Does this mean that the size of the output from the
demodulator block varies ? 

Fasika


      
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