Re: Cropping buffer - Server.sync + best way

>
> Hi all
> I need to crop a buffer. That's not straight forward in SC because of memory
> allocation on the buffer and such, so I'm wondering if the following is the
> best
> way to do this? Has anyone got a better method?
> But there are also some problems. See my comments.
> PS. I need the cropped buffer to have the same bufnum as the original
> buffer.
> cheers
> thor
>
> (
> Routine.run {
> var cond;
> cond = Condition.new;
>
> // original buffer
> b = Buffer.read(s, "sounds/a11wlk01.wav");
> "b.bufnum is: ".post; b.bufnum.postln;
> s.sync(cond);
> // temp buffer used in copying
> c = Buffer.alloc(s, 88864, b.numChannels);
> s.sync(cond);
> b.copyData(c, 0, 100000, 88864); // my cropping
> n = b.bufnum; // getting b's bufnum
> s.sync(cond);
> b.free;
>
> // cropped buffer with b's bufnum
> d = Buffer.alloc(s, c.numFrames, c.numChannels, bufnum:n);
> s.sync(cond);
> c.copyData(d);
> s.sync(cond);
> c.free;
> \cropping_DONE.postln;
> };
> )
>
> d.play // is the new buffer there? yes
> d.bufnum // and it has the b.bufnum
> c.postln;
> c.play // c is freed. That's good.
> c.bufnum
> b.play // but I thought I'd freed b?
> b.bufnum // and now b and d share same bufnum !!!
> d.postln;
> b.postln;
> // and now I could do d.write(b...path) and I've changed the file forever
> (I'll not do that to your file)
>
>
>
> // I remember Julian telling me about s.bind once, but this doesn't work:
> // Should it not?
> (
> s.bind({
> b = Buffer.read(s, "sounds/a11wlk01.wav");
> "b.bufnum is: ".post; b.bufnum.postln;
> s.sync;
> // temp buffer used in copying
> c = Buffer.alloc(s, 88864, b.numChannels);
> s.sync;
> b.copyData(c, 0, 100000, 88864); // my cropping
> n = b.bufnum; // getting b's bufnum
> s.sync;
> b.free;
> s.sync;
>
> // cropped buffer with b's bufnum
> d = Buffer.alloc(s, c.numFrames, c.numChannels, bufnum:n);
> s.sync;
> c.copyData(d);
> s.sync;
> c.free;
> })
> )
> d.play
>