[gst-devel] VST Audio Plug in approach using Gstreamer and Linux OS with ARM Cortex A8 processors

thx1138 thx1138 at earthlink.net
Tue Jan 13 18:54:12 CET 2009


On 1/13/09 12:15 AM, "Paul Davis" <paul at linuxaudiosystems.com> wrote:

> On Sat, 2009-01-10 at 10:10 -0800, thx1138 wrote:
>>  
>> So, If I understand your response, VST plugins compiled for Windowx/MacOSX
> 
> they are compiled for an OS *and* a CPU architecture: windows/x86 and
> OSX/ppc or OSX/x86. you cannot take these plugins an expect to run them
> on linux/arm. you could not even run them on windows/arm or
> windows/alpha (for example).
> 
>> would need to be recompiled to run as plug-ins using Gstreamer.
> 
> if you use an ARM processor, they would have to be recompiled one way or
> another even if you ran windows and use VST.
> 
>> Wine just give a Windows emulation for x86 emulation I gather.
> 
> not precisely, but close enough. the point is that the plugins will not
> run on a different CPU architecture without being recompiled. unless you
> have source code for the plugin, its a non-starter.
> 
>> Our software manager has decided to build our Dolby, DTS, etc. plug-ins to
>> use Gstreamer as interface which I believe is fine, I just need other VST
>> applications to be ported to Gstreamer.
> 
> from the sound of it you need VST *plugins* not VST-supporting host
> applications.
> 
>> I wish I had some quick way to evaluate Gstreamer plug-ins versus VST
>> approach. Perhaps this will take some effort to gather benchmarks on
>> latency.
> 
> the VST architecture has no impact on latency. the audio latency is
> determined by the host application, the plugins have no way to affect
> it.
> 
> i do not know enough about gstreamer to understand its approach to
> latency, but i do know that at least as of a few months ago, gstreamer
> was not designed around the same principles as most low latency audio
> APIs (ASIO, CoreAudio, JACK). however, it may still be able to get down
> to the range you need - unless you are creating an application for
> pro-audio and/or musical performance, the acceptable range is pretty
> wide.
> 
> 
> 
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Hello Paul,

This Terry Shultz,

I was wondering is we could have a chat by phone. I am based in Los Angeles
and I was hoping we could talk a bit more on the path in my earlier emails.

My Cell# is 949.254.1159

Best regards,

Terry





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