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Re: [Discuss-gnuradio] gr_fractional_interpolator.i missing, does anybo

From: Martin Dvh
Subject: Re: [Discuss-gnuradio] gr_fractional_interpolator.i missing, does anybody have it
Date: Tue, 13 Mar 2007 00:50:29 +0100
User-agent: Debian Thunderbird 1.0.2 (X11/20070113)

Eric Blossom wrote:
> On Mon, Mar 12, 2007 at 09:01:15PM +0100, Martin Dvh wrote:
>>Johnathan Corgan wrote:
>>>Martin Dvh wrote:
>>>>Apparantly the module doesn't exist anymore, although 
>>>>gr_fractional_interpolator.h and gr_fractional_interpolator.cc exist.
>>>>I suspect there should also be a: gr_fractional_interpolator.i
>>>>But I couldn't find it in my source or any of the older gnuradio 
>>>>releases I have laying around.
>>>It doesn't appear to have ever existed, as far as I can tell.
>>>Everywhere fractional interpolation is used in the tree, the low-level
>>>gri_mmse_fir_interpolator implementation is used.
>>>The gr_ wrapper does look functional, but I just spotted a bug in its
>>>constructor, so it looks like a work-in-progress that never got finished.
>>Yes, I spotted it too now:
>>   d_mu (phase_shift), d_mu_inc (interp_ratio), d_interp()
>>should be
>>   d_mu (phase_shift), d_mu_inc (interp_ratio), d_interp(new 
>> gri_mmse_fir_interpolator())
>>>>Could anybody tell me how to get gr_fractional_interpolator to work 
>>>>or where gr_fractional_interpolator.i is.
>>>I'll add getting this to work to my queue :-)
>>I don't mind getting it to work myself.
>>I just don't like inventing the wheel twice.
>>I will try to get it to work in my tree
>>and let you know when its done.
I implemented gr_fractional_interpolator_ff and gr_fractional_interpolator_cc
They are in
If you do a diff for this folder between rev 4342 and rev 4741 you get the 

(I also attched it as diff)

Haven't had time to test it much, but make and make check succeed.
Since the underlying gri_mmse... code is well tested in other blocks I don't 
expect much trouble.

> Thanks!
> Eric

Attachment: fractional_interpolator3.diff.gz
Description: GNU Zip compressed data

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