Gerry, If you can go with an app, check out Zinc. It offers several system interfaces, including invoking DLLs directly: http://www.multidmedia.com/support/livedocs/ --Dave
On Jul 19, 2011, at 9:00 AM, flashcoders-requ...@chattyfig.figleaf.com wrote: > Message: 12 > Date: Tue, 19 Jul 2011 18:04:56 +0800 > From: Gerry Beauregard <gerry.beaureg...@sonoport.com> > Subject: Re: [Flashcoders] Calling native code from Flash > To: Flash Coders List <flashcoders@chattyfig.figleaf.com> > Message-ID: <33c7166e-228c-476a-872d-ce45a0b8b...@sonoport.com> > Content-Type: text/plain; charset=us-ascii > > Thank you Paul and Karl for your responses! Interesting discussion! > > On 2011-07-19 , at 17:36 , Paul Andrews wrote: > >> On 19/07/2011 10:27, Karl DeSaulniers wrote: >>> Hi Paul, Gerry, >>> Are these runtime calls, or calls to set up runtime? >>> How is the swf published? Local? Server? >>> If Local, you could try javascript. >>> Calling the javascript before you need the results in flash. >>> Then que the results so there is no latency, like a buffer? >>> >>> If server, I would go with Paul's socket suggestion or a perl script. >>> Or call the php before you need the results in flash. >>> A small php script takes milliseconds to execute. >> >> Maybe, but there's network latency to be added to that. DSP usually requires >> fast real-time processing, so latency defeats the object of using native >> code. My suggestion about the socket server would be to install that on the >> client, not a remote server. Even so I suspect the latency will be too big. >> > > The application involves real-time audio DSP with very low latency. Audio > data would need to be passed from the AS3 code to the native code for > processing, with results passed back from the native code to AS3. It'd be a > lot of data, easily a half dozen streams of 16-bit 44.1kHz audio. > > Given the amount of data involved and the real-time low-latency requirements, > it's almost certainly not practical to go through php, perl, or javascript > bridging code. > > I sort of expected that calling native code in an efficient way wouldn't be > possible, due to the security sandbox issues as Paul mentioned. I was just > hoping there was some trick to do it... Maybe with signing of native > binaries so they're considered trusted by Flash? Maybe having the user give > permission to use native code (analogous to how the user needs to give > permission to use the microphone input, for example)? But I guess there isn't > :-( > > Looks like I'll have to squeeze whatever performance I can from code written > in AS3. Looking on the bright side, at least I can stick to one language :-) > > Thanks again for all your suggestions and feedback! > > -Gerry > _______________________________________________ Flashcoders mailing list Flashcoders@chattyfig.figleaf.com http://chattyfig.figleaf.com/mailman/listinfo/flashcoders
