Le mardi, 1 avr 2003, � 00:06, Benjamin Reed a �crit :
Daniel Wyeth wrote:
My presumptions about runtime dependencies were incorrect anyway however ( why every linux distribution has to rename the upstream packages I will never understand ) so all in all it was an ill fated project. Though I will say that the developers are extremely helpful and were quite excited about getting RG into Fink, so if at some latter stage it does become feasible, I suspect they will be of great assistance.
Well, if you want to write a coreaudio midi driver for arts, it's possible...
Peter came up with a workaround for dlcompat quite some time ago, but as I understand it, it's not the best way to implement it, and it will slow down everything else even if they don't need it...
Sadly there seem no viable alternatives to RG available: Brahms is the only other open source sequencer / notation package that I am aware of and it too is built on aRts / KDE, and will thus suffer the same problems. Denemo was never intended to be anything more than a GUI for lilypond, and would appear to have been abandoned in anycase ( last release was in 2001 ).
So it sounds like an arts midi driver would benefit a couple of projects...
Do you know if gstreamer does midi, and do any of these projects use that? It sounds like KDE is dropping the arts requirement as of 3.2, so a lot of that stuff may become optional in general...
I'm not familiar with gstreamer but according to their FAQ... no it doesn't, although also according to their FAQ, you can write the MIDI functionality for gstreamer if you really want ;-)
Someone on the Rosegarden list mentioned a project called PortAudio ( http://www.portaudio.com ) which is part of a wider cross platform ( Linux , Mac, Windows ) set of libraries for audio and midi. Audacity makes use of this, but it is the only application listed on their web site with which I was familiar. Of the various sound layers which exist entirely in user space aRts is probably both the most comprehensive ( audio I/O, midi, effects framework ) and the most cross platform ( Linux, *BSD, OS X sort of... ) of those that are in wide use. Was there any indication of what KDE would be replacing aRts with, because, despite the difficulties it's probably the most portable sound architecture used by opensource audio, compare aRts to ALSA for example.
I'm a maths student, and former Java programmer who knows just enough C and C++ to be dangerous, so I suspect that writing a coreaudio driver is way, way beyond me, I'm still coming to grips with autoconf and make. However to whatever extent I can help, I would like to. At the moment however I'm not quite sure where to begin, although line 1 of artsmidi.h or coreaudio.h are probably two reasonable guesses.
Daniel.
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