[jmsl] writing work to a midi file

[jmsl at music.columbia.edu]

Thanks, Nick.

I'll check out both your solutions (this and the Player substitute  
code) in the morning.

cheers,

J.


On 15-Jul-08, at 9:37 PM, jmsl at music.columbia.edu wrote:

> Hello J
>
> Have look at jmsltestsuite.MidiLoggerNonRealTimeTest which plays  
> MusicShapes at hyperspeed and writes them to a MIDI file. This will  
> probably do what you need.  All scheduling will be preserved because  
> the MusicShapes are really playing, although they are doing so  
> silently and as fast possible. But their timestamps are updating  
> properly and this is what is being written to the MIDIFile for timing.
>
> If you want to use MIDI instruments and record in real time then of  
> course you can just use Midi logging.
>
> Thanks
> Nick
>
>
> jmsl at music.columbia.edu wrote:
>> I'm going to be asking some pretty general questions for a bit,  
>> while I work on the basic design of my app.
>>
>> This time I'm curious about midi file IO. I don't see any methods  
>> which allow MusicShapes to be entered directly into midi files, so  
>> I'm assuming we'd do something like this:
>>
>> 1) iterate over elements in a given MusicShape
>> 2) get midi-compatible dimensions and create new MIDIFileEvents or  
>> MIDIFileMetaEvents for them
>> 3) add the MIDI events created in 2) to a new MIDIFileTrack
>> 4) add the track from 3) to a MIDIFileImage
>> 5) write the image from 4) to a midi file
>>
>> Sound about right? The only thing I'm not sure about is figuring  
>> out the proper time for the events when creating midi tracks, since  
>> the MusicShape holds events in seconds, while the midi tracks will  
>> hold them in ticks...
>>
>> J.
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