MIDI generation

[mbektimirov]

Hi Daniel!

I am trying to generate MIDI with alphatab and already implemented some core classes from the TuxGuitar: MidiFileWriter, MidiEvent, MidiMessage, MidiSequence, MidiTrack and rewrited MidiSequenceHandler. I didn't touch MidiSequenceParser. The problem is with strange big size of outputed MIDI. I made a test conversion with clean TuxGuitar code and with my current implementation. You could see tracks data below. The size of a alphaTab converted MIDI array is larger than TuxGuitar converted array (~ 36000 - 41000).

Did you do any significant changes in alphaTab that could make this happen?
It would be great if we could have a Skype chat to discuss other questions and problems.
Thanks for your attention!

P. S.
I've tried to remove makeMixChange() method from MidiSequenceParser, but problem hasn't gone.

Human Abstract - Patterns gp5
-------------------------------------------------------------
Java:

Track size: 68
    Event data length sum: 202

Track size: 2257
    Event data length sum: 6766

Track size: 2257
    Event data length sum: 6766

Track size: 989
    Event data length sum: 2962

Track size: 1520
    Event data length sum: 4555

Track size: 763
    Event data length sum: 2284

-----------------------------------------------------------------
Haxe: 

trackSize: 68
sumDataLength: 202
, 
trackSize: 2281
sumDataLength: 6838
, 
trackSize: 2281
sumDataLength: 6838
, 
trackSize: 1003
sumDataLength: 3004
, 
trackSize: 1534
sumDataLength: 4595
, 
trackSize: 2071
sumDataLength: 6208

[ben-ng]

Why don't you use MidiDataProvider.getSongMidiFile(song:Song, factory:SongFactory):MidiFile?

[mbektimirov]

Seems like I missed this feature in commits. Thank you!

[mbektimirov]

I am reopening this issue because MidiDataProvider generates wrong midi file. I've found two problems for now: some tracks are muted by default or a single track could be muted unexpectedly while playing. If you've got any suggestion about the problem I can help to solve it.