DSP Plugins

[thinktink]

I'm toying with the idea of making a DSP. I've already got a "working" dll. I looked at the example DSP source from the SDK and I've got a problem with callback calling sequence and the "sf" entry in the header def.

Question 1:

winampDSPHeader.sf

What is "sf"? When does it get called? I copy and pasted the "sf" function from the example DSP in the SDK but I have no idea what it's supposed to do.


Question 2:

Is it possible that a module's "ModifySamples" callback can be called during or even after a callback to the module's "Quit" function?

Thanks in advance

[FabD]

Hello,

Nobody to answer this one ? I'm also stuck on this "sf" function and her use... I cannot figure out what is doing the one in the example ...

Thanks in advance,
FabD

[DrO]

1) the sf() function is used to determine if the dsp plug-in is a 'trusted' plug-in (and if you're not trusted then you're not going to know what the functon needs to do) so i really wouldn't worry about it (also i don't think it is used anymore anyway as it could otherwise allow drm'd output to be processed and as that has been circumvented once we don't want that to happen again).

2) the ModifySamples(..) function shouldn't be called when the plug-in is being unloaded or afterwards.

-daz

[FabD]

Hi Dro, Thanks for the answer....

[thinktink]

Wow, it took approximately 227 days and a bump to answer this question! lmfao!

Thanks, I was still wondering about that.

[DrO]

well i'd missed it though i was between homes and decorating one of them so not too bad really, hehe

-daz

[thinktink]

New Question:

What is the difference between "winampDSPGetHeader" and "winampDSPGetHeader2"?

Does the current version of Winamp support DSPs that only export the "winampDSPGetHeader" function?

[DrO]

only 'winampDSPGetHeader2' is supported (don't think i've ever seen anything with 'winampDSPGetHeader' in it).

-daz

[thinktink]

Thanks, one less thing to have to worry about.