To note, if you're using a double version of Csound you will also need
to set MYFLT to double, which I think is done by adding -DUSE_DOUBLE
to the gcc parameters(correct me if I'm wrong).

On 7/23/07, Victor Lazzarini <victor.lazzarini@nuim.ie> wrote:
> If you have mingw and libsndfile, you can build them
> from the source, using
>
> gcc -shared -o pvsbuffer.dll pvsbuffer.c -I"c:/Program
> Files/csound/include" -I/usr/local/include
>
> The source file is pvsbuffer.c and you can get it
> from csound5 CVS at sourceforge (for instance using Browse
> CVS).
>
> Otherwise, it'll be there at the next release.
>
> Victor
>
> >
> > Nice one, Mr. Lazzarini. These will be really useful. I'm
> > new to the plug-in version of Csound. Is there some way we
> > can install these into the current Csound (Windows
> > version)?
> >
> > --Richard.
> >
> > -----Original Message-----
> > From: Victor Lazzarini [mailto:Victor.Lazzarini@nuim.ie]
> > Sent: 23 July 2007 09:48
> > To: csound@lists.bath.ac.uk
> > Subject: [Csnd] ANN: new opcodes
> >
> >
> > New opcodes in CVS
> >
> > ihandle, ktime    pvsbuffer       fsig, ilen
> > fsig                      pvsbufread   ktime, khandle[,
> > ilo, ihi]
> >
> > This pair of opcodes make up a circular buffer read/write
> > pair for streaming PV signals.
> >
> > The first  sets up and writes to a circular buffer of
> > length ilen (secs), giving a handle for the buffer and a
> > time pointer, which holds the current write position (also
> > in seconds).
> >
> > The second opcode reads from the circular buffer specified
> > by khandle at a time position determined by ktime (secs).
> > It can read the whole set of PV bins or a subset defined
> > by the freq interval  (ilo, iho).
> >
> > With these opcodes it is possible to, among other things:
> > 1) time-stretch/compress a fsig stream, by reading it at
> > different rates 2) delay a fsig or portions of it.
> > 3) 'brassage' two or more fsigs by switching buffers,
> > since the reading handles are k-rate. Note that, when
> > using k-rate handles, it is important to initialise the
> > k-rate variable to a given handle (so that the fsig
> > initialisation can take place) and it is only possible to
> > switch handles between compatible fsig buffers (with the
> > same fftsize and overlap), eg.
> >
> > fsig1   pvsanal   asig1,1024,256,1024,1
> > fsig2   pvsanal   asig2,1024,256,1024,1
> >
> > ibuf1,kt1   pvsbuffer   fsig1, 10  ; 10-sec buf with fsig1
> > ibuf2,kt2   pvsbuffer  fsig2, 7      ; 7-sec buf with
> > fsig2
> >
> > khan init ibuf1    ; initialise handle to buf1
> >
> > if  ktrig  > 0 then   ; switch buffers according to
> > trigger khan = ibuf2
> > else
> > khan = ibuf1
> > endif
> >
> > fsb  pvsbufread  kt1, khan   ; read buffer
> >
> > Now in CVS (should be there in the next release);
> > man page coming soon.
> >
> >
> > Victor
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> > Victor Lazzarini
> > Music Technology Laboratory
> > Music Department
> > National University of Ireland, Maynooth
> >
> > --
> > Send bugs reports to this list.
> > To unsubscribe, send email to
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> >
> >
> > --
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