Very nice Andrew
I look forward to play with this.
Thor
On 7 Sep 2009, at 09:14, Andrew Sorensen wrote:
> Impromptu version 2.0 is now available for download at:
> http://impromptu.moso.com.au/downloads.html
>
> Impromptu v2.0 is a major release with three significant
> architectural changes.
>
> 1) A new impromptu x86 compiler
> 2) Audio signal processing directly in Impromptu.
> 3) A new concurrent garbage collector
>
> The new impromptu x86 compiler uses LLVM for backend code generation
> and supports runtime compilation of scheme functions to x86 machine
> code. In particular the compiler has been added to impromptu to
> support the efficient compilation of scheme code for data processing
> tasks such as image processing, audio signal processing and OpenGL.
> The compiler is exposed at runtime through the sys:compile call
> which accepts a scheme closure and returns a foreign function which
> may be called freely from scheme. (help sys:compile #t) will give
> you a bunch of examples.
>
> On-the-fly audio DSP programming is now supported directly within
> the impromptu scheme environment by allowing x86 code (i.e. compiled
> scheme code) to be hot-swapped into the kernel of a custom code
> AudioUnit. You may use one or more of these custom code audiounits
> anywhere in your audiounit chain - as both generators and or
> effects. Code is hot-swapped into an AU kernel by passing a given
> scheme closure to the au:code:load function. There is also a
> mechanism for sharing memory between the AU and the scheme runtime.
> (help au:code:load #t) will give you a bunch of examples.
>
> The primary motivation for the new GC is to provide greater
> performance with larger heap sizes.
>
> v2.0 also adds support for Snow Leopard but is no longer provided as
> a Universal Binary. Intel only from v2.0 forward.
>
> A brief screen-cast demonstrating the new on-the-fly audio
> functionality can be found at: http://www.vimeo.com/6096554
>
> Cheers,
> Andrew.
Received on Mon Sep 07 2009 - 11:01:30 BST