23 Feb
2004
23 Feb
'04
1:21 p.m.
Jesse Chappell wrote:
Benno Senoner wrote on Mon, 23-Feb-2004:
Hey guys,
I ain't arguin', but I'll believe it when I see it.
Please explain to me how any of this is supposed to work for the big
world out there using Windows and Mac sequencer platforms. Today we are
*all* using GSt on separate boxes for our sequencers. I just don't see
it. These platforms are going to generate a MIDI event. They don't know
a GSt MIDI event from an LS MIDI event. LS is going to play the note
when it receives the MIDI event. How can it do anything differently?
MIDI itself doesn't send a timestamp. How's that supposed to work?
Even in the case of the VSTi wrapper on the Windows platforms (as
has been discussed) I cannot understand that even if you can timestamp a
MIDI event before you send it over Ethernet (and I'm not sure you can
accurately enough in those environments) how are you going to do this
when there is jitter in the clocking on those systems?
I'll submit that on a Linux only set of boxes (well, possibly
plural) it may be very possible to do something non-standard and get it
to work, although I'd like to now what the latency overhead is going to
be. If that's what you're going for then that could be cool for Linux
only users. (Not the goal ofthe LS project I thought, but I've certainly
been wrong before.)
Anyway, it sounds great to me, and I'm here to test when it starts
becoming real, but I just don't see it yet.
- Mark
Not true Mark :)
LS does not have this limitation: although the current implementation
for now allows only
ALSA MIDI input, Christian added a time stamped event system which was
planned anyway
for accuracy reasons and because it will allow LS to be turned into a
VSTi or AU plugin.
If some VSTi like standard and sequencers will arise under Linux, LS can
support such features
without needing many modifications to the engine.
In addition, work is being done on midi-over-JACK which will provide
sample accurate timestamped midi events via a new jack port type. Programs
that use this interface will get all the benefits of sample-synced
realtime performance from their sampler/synth, plus the ability
to render accurately non-realtime when JACK is in "freewheel" mode.
jlc