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Re: [Discuss-gnuradio] GR Block Input Item Size


From: Eric Blossom
Subject: Re: [Discuss-gnuradio] GR Block Input Item Size
Date: Mon, 25 Oct 2010 16:54:16 -0700
User-agent: Mutt/1.5.21 (2010-09-15)

On Mon, Oct 25, 2010 at 12:36:13PM -0700, Andrew Fong wrote:
> Hi,
> 
> I want to create a block that requires 10000 input items and
> produces 10000 output items on a single stream.  However, I'm
> getting the following message: sched: <gr_block lfm_demod_cf (8)> is
> requesting more input data
>   than we can provide.
>   ninput_items_required = 10000
>   max_possible_items_available = 8191
>   If this is a filter, consider reducing the number of taps.
> 
> How do I get the block to operate as I want?  I thought inheriting
> from gr_sync_block with 1:1 input/output rate would work, but it
> doesn't seems to be the case.
> 
> Andrew

If you require 10,000 input items at a time, you must
call set_output_multiple(10000) in your constructor.

Eric



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