Subject: Re: [linux-audio-dev] ecasound on iPAQ 3600
From: ljp (ljp_AT_llornkcor.com)
Date: Thu Mar 07 2002 - 19:46:48 EET
Sweet!
That means it'll also run on the Sharp Zaurus!
ljp
At 07:09 PM 3/7/2002 +0200, you wrote:
>I just finished porting ecasound to Compaq's iPAQ 3600, running the
>Familiar v0.5.1 Linux distribution. This is probably the first multitrack
>recording suite running on a PDA. :)
>
>Porting work was actually quite easy. Just get the arm-linux
>cross-compilation environment (gcc+glibc), fetch ecasound sources from
>CVS, and then compile with "./configure --disable-ncurses; make". Thanks
>to auto-tools, that's all to it.
>
>Unfortunately, as iPAQ's ARM doesn't have an FPU, ecasound runs awfully
>slow. To make realtime operation possible, you need to compile with
>-msoft-float (otherwise kernel will handle float operations via trapping).
>Even then performing any kind of realtime effect processing is too heavy
>for the ARM. But simple full-duplex capture+recording, with low-latency
>settings (running with sched_fifo) works nicely without any hacks to the
>kernel or Familiar distro.
>
>But, but, until someone makes a fixed-point version of ecasound, I'm
>afraid using iPAQ as your studio's central server will not be possible.;D
>
>PS No JACK support yet. ;)
>
>--
> http://www.eca.cx
> Audio software for Linux!
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