Re: [Pyobjc-dev] How to get (void*) data into a Python array

[Ronald O. <ron...@ma...>]

On 4 Feb, 2011, at 21:55, Trevor Bentley wrote:

>> IMHO your problem is not PyObjc - you have everything you need there. It's getting things into NumPy.
>> 
>> One way would be to use ctypes. You can create a pointer to whatever data-type you want, and initialize that with the returned integer. I don't have example code right here (wrong machine), but it's not that hard.
>> 
>> then at least you can access the data properly, and stuff it into a NumPy array.
>> 
>> However, the best solution would of course be to be able to create a NumPy array based on the pointer. I know NumPy has a C-API, maybe that's exposed somehow?
>> 
>> Diez
> 
> That's where I took it immediately after sending the e-mail: ctypes
> pointers.  I managed to get a pointer to something... maybe it's pixel
> data.  NumPy doesn't want to import my pointer as an array, and it turns
> out I don't know what format the returned data is in, anyway.
> 
> Since efficiency isn't even a slight concern, I actually found a
> technique that works...
Which techinque did you find?

Ronald