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Topic: Windows Scripting Host on win2000? (Read 2093 times) |
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Dimitri
New Member
MIDI-OX Rules!
Posts: 2
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Windows Scripting Host on win2000?
« on: Aug 13th, 2002, 9:57pm » |
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First of all I would like to thank you for your super app MidiOX. I use it as a midipatcher/filter to control my synths and secuencers from internal and external midi sources. And it works great, even for live performances.
But, as a programmer, I am also very interested in the MidiOX COM interface. I would like to write my own arpeggiator using WSH/Javascript. But in all the scripts I tested I couldn't receive any midi data from the COM object. I could send midi data, query devices, etc, but the functions GetMidiInput() and GetMidiInputRaw() never return any receiving data I see in the Input Monitor and Port Activity Window.
I run Windows 2000-SP3, with a Unitor 8, WHS 5.6. I use the following JS-script for testing:
function Mox_OnMidiInput( t, s, c, d1, d2 ) {
WScript.Echo( t+","+s+","+c+","+d1+","+d2);
}
var Mox = WScript.CreateObject("MIDIOX.MOXScript.1","Mox_On");
Mox.ShutdownAtEnd = 1;
var msg = "";
var dev = Mox.GetFirstOpenMidiInDev();
while( dev ) {
msg += "Input "+Mox.GetInPortID(dev)+": "+dev+"\n";
dev = Mox.GetNextOpenMidiInDev();
}
dev = Mox.GetFirstOpenMidiOutDev();
while( dev ) {
msg += "Output "+Mox.GetOutPortID(dev)+": "+dev+"\n";
dev = Mox.GetNextOpenMidiOutDev();
}
WScript.Echo(msg);
Mox.FireMidiInput = 1;
Mox.DivertMidiInput = 1;
while( !Mox.ShouldExitScript ) {
msg = Mox.GetMidiInputRaw();
if( msg ) {
WScript.Echo(msg);
} else {
Mox.sleep(100);
Mox.OutputMidiMsg( -1, 146, 78, 127);
}
}
WScript.Quit();
It gives the following output:
Input 3: Un In 03 (From MC 505)
Input 4: Un In 04 (From AN1X)
....
Output 2: Un Out 01 (To Elect-R)
Output 3: Un Out 02 (To Rs7000)
...
So that part works fine. But I never receive any Midi Data. Do you have a clue? Maybe some functions are known not to work on win2000? Maybe WSH/Javascript is the problem?
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Jamie OConnell
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Posts: 2027
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Re: Windows Scripting Host on win2000?
« Reply #1 on: Aug 14th, 2002, 1:22am » |
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I was able to run your script under Windows XP, and I got the Mox_OnMidiInput() routine to fire, but I had to comment out the "msg = Mox.GetMidiInputRaw();", because it was masking the MidiInput() messages:
...
while( !Mox.ShouldExitScript ) {
msg = 0; // Mox.GetMidiInputRaw();
if( msg ) {
WScript.Echo(msg);
} else {
Mox.sleep(100);
// Mox.OutputMidiMsg( -1, 146, 78, 127);
}
...
If you're not getting any MIDI input, try re-registering the app. Go to the MIDI-OX folder and type:
MIDIOX.EXE /RegServer
You have to change to the app folder because of a command line processing bug (fixed in next release).
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| « Last Edit: Aug 14th, 2002, 1:24am by Jamie OConnell » |
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--Jamie
Music is its own reward.
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Dimitri
New Member
MIDI-OX Rules!
Posts: 2
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Re: Windows Scripting Host on win2000?
« Reply #2 on: Aug 20th, 2002, 6:43pm » |
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Thanx for you help, it works now  But I noticed something strange using filters in the filter dialog. When I place a checkmark on a channel and do not place any checkmark on a filter type (note on/off, etc) all midi data on that channel will be received in the input-screen as expected, but will not be send to the listening WSH script. (That is also a reason why I didn't receive any data)
This means that I can not use any realtime filtering in combination with an active WSH script, doesn't it?  Is there a work around or maybe I do something wrong. I think a WSH script will not be fast enough to do all the filtering on 8 ports itself using 'DivertMidiInput'. I didn't check if data-mapping has the same 'blocking effect' for WSH scripts.
Dimitri
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Jamie OConnell
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Posts: 2027
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Re: Windows Scripting Host on win2000?
« Reply #3 on: Aug 20th, 2002, 8:01pm » |
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When you place a checkmark on a Channel in the filter, you are specifying that ALL data on the channel be filtered, and no data is passed to the Script or the Output. You CAN use real-time filtering of input data before it is passed to the script. Only check channels that you want Filtered not the ones that you want passed.
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--Jamie
Music is its own reward.
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