Re: [Discuss-gnuradio] digital_ofdm_cyclic_prefixer::work

[Martin Braun (CEL)]

On Sat, Jun 29, 2013 at 01:10:31PM +0200, Stefano wrote:
> >it looks like the block inherits from gr_tagged_stream_block which
> >will will call a blocks work function with the exact number of
> >samples for one PDU with a known size in general_work and will
> >call consume for you afterwards.

For the record: No work() function should *ever* call consume,
regardless of its type (currently, that would be either gr_sync_block,
gr_sync_decimator, gr_sync_interpolator and gr_tagged_stream_block).

Only call consume() or consume_each() from general_work().

There's one exception: gr_tagged_stream_blocks may fall back to gr_block
behaviour. The cyclic prefixer you mention is such a case, because it is
a modification of an existing block, and provides gr_block style
behaviour for backward compatibility. See:
http://gnuradio.org/doc/doxygen/page_tagged_stream_blocks.html

MB

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