Re: Lilypond on iPhone

[Bertalan Fodor]

I'm close to finish a lilypond webservice that could be used on the internet or 
in the local network. I think that would be ideal for that  as can be used from 
any browser.

 ---- Original message ---- 
From: Eric Knapp <address@hidden>
Sent: 5 Feb 2010 21:37 -08:00
To:  <address@hidden>
Subject: Re: Lilypond on iPhone

On Thursday, February 4, 2010, Dave Addey <address@hidden> wrote:
>
>
> Hi all,
>
> I’m wondering if anyone has built or tried to build the Lilypond library for 
> the iPhone platform, to render engraved music on an iPhone-OS-powered device? 
>  I’m considering this for an upcoming project, and wanted to ask a few 
> questions before diving in to trying it myself.  Here goes:
>
> 1) How do you rate my chances of getting Lilypond to compile for the 
> ARM-based iPhone OS, especially given the number of libraries it depends on?
>
> 2) Would there be any licensing issues in using Lilypond (and dependent 
> libraries) in a paid app on a closed platform such as the iPhone?
>
> 3) What’s the likely performance of rendering .ly files on a lower-powered 
> (and lower-memory) device such as an iPhone or iPod Touch? Is it likely to 
> take seconds, minutes or hours?  How about on an iPad?  (I’m looking for 
> rough guesses here, before I go through the pain of attempting compilation.)
>
> 4) If performance is likely to be a no-go, what are my best alternative? 
> Server-side PDF generation for delivery to a device?
>
> Any thoughts or ideas much appreciated.  I’ve a fair bit of experience in Mac 
> open-source development (I wrote much of the audio code for Handbrake), but 
> I’m new to Lilypond, so would be starting from scratch in compiling it.
>
> Thanks!
>
> Dave.
>
>

I'm working on this idea for the upcoming iPad. I would love to be
able to sit with my instrument and notate with the iPad on a stand or
table. The first approach I'm going to try is with a RESTful web
service backend app running on my desk computer. If I don't get the
performance I want with that, I'll create a Cocoa server app with
direct sockets.

This seems like a very doable project and I'm looking forward to
giving it a try. Waiting for my iPad!

-Eric


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