[Clam-devel] Re: [PATCH] Re: adding spectrum magnitude to annotator discussion

[bennett kolasinski]

OK, I'll fix right away-- so should I update my sandbox before making the
changes?

On 7/5/07, David García Garzón <dgarcia at iua.upf.edu> wrote:
>
> Bennet i committed most of it but it needs urgent fixes.
>
> First of all PoolFloatArrayDataSource::updateData takes FirstBinOffset and
> BinGap from the parent attribute instead of the attribute you are
> addressing.
> The parent attribute is the FrameDivision, it is an attribute that says
> how
> the frames are placed along time, which uses a similar description in time
> (a
> FirstBinOffset and a BinGap) than the spectrum distribution in frequency.
>
> So, instead of taking them on 'updateData', you should take such
> attributes on
> PoolFloatArrayDataSource::setDataSource method, the method where the
> schema
> is set, and take them as we currently take the bin labels.
>
> setDataSource: The source pool has changed, the schema must be updated
> updateData: The data (or current frame) has changed, data must be updated
>
> Besides that, such members of PFADS class (FirstBinOffset and BinGap) are
> pointers to values that exist outside of the object. That's very dangerous
> as
> the external object may change its structure. Keep a copy of the value
> instead. If it is not present, then set a default value (0 and 1 are a
> nice
> guess) and if you need to know whether they are set (HasX) then use a bool
> member.
>
> So many errors should have ended in something noticeable but in fact we
> are
> not having any error because we are not using them. They should be used on
> PoolFloatArrayDataSource::getLabel, but now it is computing the label by
> returning the string formatting of NBins, instead the string formatting of
> offset+i*bingap.
>
> And just for keeping the code clear, all the code to get the nBins at
> BarGraphPlugin::ConfigureDialog is useless. We need it on the other
> plugins
> as we also filter by the number of bins (12 for the Tonnetz and 24 for the
> KeySpace). But that's not the case here. I'll remove that code before
> committing it. That might cause a svn conflict on you sandbox. Try to fix
> the
> rest.
>
>
> David.
>
>
> On Thursday 05 July 2007 06:16:02 bennett kolasinski wrote:
> > Attached is an update to ClamExtractorExample that incorporates your
> > suggestions from this email and IRC discussion as well as changes to
> > InstantViewPlugin.  I'm not seeing SpectrumMagnitude as one of the
> > attributes that can be visualized using BarGraph-- I'll look more into
> it
> > in the morning-- but as far as I can tell everything else is working
> fine.
> >
> > B
> >
> > On 7/4/07, David García Garzón <dgarcia at iua.upf.edu> wrote:
> > > On Wednesday 04 July 2007 07:40:40 bennett kolasinski wrote:
> > > > Hi David-
> > > > Adding SpectrumMagnitude to ClamExtractorExample seems to really
> blow
> > > > things up.  First off, ClamExtractorExample seems to be hanging on
> the
> > >
> > > call
> > >
> > > > to restoring the XML file now (with the last patch I sent):
> > > > CLAM::XMLStorage::Restore(toValidadDescription, poolFile);
> > > >
> > > > I'm not sure if it's actually hung or just taking a really long time
> to
> > > > write what appears to be a 40.2 MB pool for a 3mb MP3
> file.  Actually,
> > > > looking at the file that was allocated, it looks like it hasn't been
> > > > touched since it was initially written-- maybe the file has been
> > >
> > > written?
> > >
> > > > do you have any reason to believe why XMLStorage::Restore() would
> hang
> > > > (maybe because it's such a large XML file)?  I just set it to run
> with
> > >
> > > the
> > >
> > > > 'time' command and will see if it finishes up (and how long it
> takes)
> > > > by the time I wake up in a few hours.  Interestingly the pool file
> that
> > > > was allocated on my hard drive was the same size whether I ran it
> with
> > > > 512
> > >
> > > bins
> > >
> > > > or 10 bins.
> > >
> > > Suspicious. Take a look to the actual content of the xml.
> > >
> > > > Have you had a chance to run the patched ClamExtractorExample?  Am I
> > > > running it correctly by simply passing the desired audio file into
> it?
> > > >
> > > > ./ClamExtractorExample mp3file.mp3
> > > >
> > > > ClamExtractorExample -s produces what appears to be a valid
> schema...
> > > >
> > > > BTW, I believe the code changes to PoolFloatArrayDataSource that you
> > > > suggested are complete, but I don't want to send that patch until I
> get
> > >
> > > a
> > >
> > > > fresh look at it in the morning.
> > >
> > > Well, if you send it, we could help you more on giving you an
> > >
> > > > Any ideas would be appreciated!  Is SpectrumMagnitude too... 'dense'
> > > > (?) for Annotator?  Do we need a more efficient way of storing it
> than
> > > > a plaintext file?
> > >
> > > Yes we should have a more efficient way, but, the short goal now is
> not
> > > storing spectrums but having FloatArrays with numeric bin labels and
> > > being able to represent them. So a smaller array should do the work.
> So,
> > > keep your
> > > focus and minimize distractions from it.
> > >
> > > BTW, the TODO wiki is a nice tool set such focus. I would recommend
> you
> > > to mark your current task and subtasks in a special way. Also,
> writting
> > > down all
> > > those tasks you see but that go away from your current focus is a good
> > > practice as let you take them out of your mind. Also to marking done
> task
> > > with [[Image:done.png]] helps you to have the sensation of progress
> which
> > > can
> > > motivate you a lot.
> > >
> > > David.
>
>
>
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