Re: Cropping buffer - Server.sync + best way

Looks like JH has answered your main issue. Regarding s.bind, remember

what it does: it colllects together all the OSC messages that your

function creates, and bundles them all off once the function has

completed. So it's illogical to use s.sync inside an s.bind, because

the OSC message sent out by s.sync won't be sent until the function

has completed, yet s.sync won't let the function complete until it's

heard a reply back...

no, this is not correct. A sync inside a bind will separate the bundles and automatically send the second part when the first is received.

So it should work, I don't know why it wouldn't.

Take a look into the BundleNetAddr, maybe there is aome way to query your intermediate state.

Dan

2008/7/20 thor <th.list@...>:

 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

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