Re: [Discuss-gnuradio] Python OOT Block Selectable Types

[Richard Bell]

Martin,

I like the first idea. Would it be possible to create a new variable in the xml file that is assigned numpy.float32 when the user selects the float option, or is assigned numpy.complex64 when the user selects the complex option? Another words, I don't want the user to have to select the port type AND have to type in the python type of the port, that should be clear from the port type drop down selection. I'm just not sure how to work this in the xml file, or if its even possible.

Rich

On Thu, May 12, 2016 at 11:11 AM, Martin Braun <address@hidden> wrote:

You can either make this a block argument (i.e., you ask the user to
pass in numpy.float32 or whatever), or, to keep consistent with the C++
way of doing things, you can make a block argument called 'sizeof' and
then create a dict that maps sizes to numpy.<FOO> values, and use that
to set in_sig.

M

On 05/11/2016 02:04 PM, Richard Bell wrote:
> I've created a python based OOT block and I want to give the user the
> ability to select the input/output type. I know how to do this for C++
> based blocks, but I'm stuck on what to do with the python blocks
> signature, as it doesn't ask for the item_size like the C++ blocks do. I
> have to give it something explicit like
>
> in_sig = [numpy.float32]
>
> How do I write the generic sig that depends on what the user selected in
> GRC?
>
> Note: The algorithm in the body of this block doesn't change depending
> on type selected. It's a simple block.
>
> Thanks,
> Rich
>
>

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