ARM gcc with alsa

Barry Vercoe bv at media.mit.edu
Fri Sep 23 00:44:23 EDT 2011


Gozalo

Well, the targets of most Csoundxo bindings don't exist in Fedora 14 
Csound, which sadly doesn't comply with the full Midi spec, nor does it 
have fixed-point opcode options which in Csoundxo run about 60% faster 
on most processors (I've yet to test this on the 1.75's Armada 610).  
Faster audio processing frees up more mips for graphic interaction -- 
such as in the XO Music Painter activity.  The fork came about since my 
original Csound was developed for larger machines (and has continued 
that tradition), while Csoundxo is tailored to lower-power processors 
which conform to the price-point of affordable XO education in really 
disadvantaged countries.  The TamTam suite isn't a good example since it 
makes mostly trivial demands on either Csound.

I will continue trying to resolve the ALSA issues for Csoundxo, which 
runs just fine on 386 installs.
Any help appreciated.

-- barry

On 9/23/2011 1:33 AM, Gonzalo Odiard wrote:
>
>
> On Wed, Sep 21, 2011 at 5:33 AM, Barry Vercoe <bv at media.mit.edu 
> <mailto:bv at media.mit.edu>> wrote:
>
>     I'm the original author of Csound, and more recently of CsoundXO
>     made especially for the OLPC XO laptop.  Both are C-language
>     programs, the latter with a set of fast Python bindings for
>     development of special interactive XO Activities (applications).
>
> Great!
>
> Can the bindings be packaged, and use the csound version available in 
> Fedora 14?
>
> This bindings, can be used by example in the TamTam Suite?
>
> Regards,
>
> Gonzalo
>
>     To compile csoundxo on the latest XO 1.75 ARM machine I did the
>     following (native):
>
>         yum install gcc
>         yum install alsa-lib-devel-1.0.24-1.fc14.armv5tel.rpm
>         gcc -o csoundxo -I/usr/include -I./include -D_POSIX_C_SOURCE 
>     -L/usr/lib -lasound -lm  ./csrc/*.c
>
>     The install appears to be missing an alsa component, including I
>     suspect a PulseAudio plugin config, which then fails to resolve
>     references to things like
>         snd_pcm_sw_params_t
>
>     Where do I find the right code for this ARM machine?
>
>     Thx
>     Barry Vercoe
>
>     Prof Emeritus MIT Media Lab
>     http://web.media.mit.edu/~bv <http://web.media.mit.edu/%7Ebv>
>
>     Dir of Education and Engineering, OLPC Australia
>     barry at laptop.org.au <mailto:barry at laptop.org.au>
>     +61 409 627 410
>
>
>
>
>
>
>
>
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