[midishare-devel] Soft-synth on Mac OS X

[Edwin V. <re...@uw...>]

Hi,

I was hoping somebody close to midishare internals could quickly answer
this question for me instead of me searching through the code. What is
used as the software synth in Mac OS X in MidiShare? Is it the QuickTime
synth or CoreMidi?

Via my experiments with QTMA in QuickTime (before I
discovered QTMA was deprecatd), I discovered that QTMA in QuickTime is
quite laggy (about 100ms in experiments). I ended up writing a new media
handler that uses CoreMidi instead. However, when trying to play
QuickTime movies with my new handler, playback can sound ever so
slightly 'uneven' since movie players usually tell media players to play
every 20 ms or so. I was hoping that MidiShare could solve my
'unevenness' problem with some better scheduling than what I naively
implemented. However, it's not going to help unless MidiShare doesn't
use QTMA internally for software synthesis.

I hope that all made sense.

-- 

Edwin Vane
   MMath Candidate
   Computer Graphics Lab
   School of Computer Science
   University of Waterloo