Re: [Discuss-gnuradio] Using set_min_output_buffer() in Python block

[David Halls]

________________________________________
> From: Activecat address@hidden
> Sent: 17 June 2014 08:39
> To: address@hidden
> Cc: David Halls
> Subject: Re: [Discuss-gnuradio] Using set_min_output_buffer() in Python block

> On Tue, Jun 17, 2014 at 1:02 AM, David Halls <address@hidden<mailto:address@hidden>> wrote:
> Hey Martin,

> My calls using

> self.set_min_output_buffer(4096*2)

> and

> self.set_min_noutput_items(4096)

> fail at runtime. Perhaps I am missing some import statements?

> "AttributeError: 'bsld_dec_butterfly_cfb' object has no attribute 'set_min_output_buffer'"

> Regards,

> David


> The "set_min_noutput_items()" is not yet a supported python statement [1] as per March 06, 2014.
> Also, I believe this statement should be placed in the member functions (constructor, work function, callback function etc) of your custom block, don't put it at the wrong place.
> In alternative, you may want to replace it with "set_output_multiple()" if this is more appropriate.

> 1. http://gnuradio.4.n7.nabble.com/self-set-min-noutput-items-is-not-a-valid-python-command-in-gnuradio-td46731.html




Thanks Activecat!!!!!!!!!!!!!!!!!! I had the problem that

"out_rc[0:len(rcABm)] = rcABm
ValueError: operands could not be broadcast together with shapes (4096) (5376)"

where "out_rc = output_items[3]"

using set_output_multiple(4096*2) has resolved my problem by increasing the length of the output buffer vector to 4096*2. I wonder if there is a fixed limit as to how far I can stretch this? In the future I may want my decoder to output even more than blocks in one go.

Regards,

David



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