[wdmaudiodev] Re: USB MIDI
- From: David Chovanec <david@xxxxxxxxxxxxxxxxx>
- To: wdmaudiodev@xxxxxxxxxxxxx
- Date: Wed, 1 Dec 2004 13:08:25 +0100
>>
>> I am pretty new to driver development. I need to write a driver for
>> USB MIDI device. I read the DDK docs but it seems so that I am lost in
>> all the models and and restrictions. There is a nice WDM USB sample in
>> the DDK but what to do as next? How to create the MIDI ports and read
>> write data to them?
tpc>
tpc> If you make your MIDI device compliant with the USB audio class spec,
tpc> you don't need a driver at all. The stock USBAUDIO.SYS will handle it
tpc> for you. Audio drivers are onerous enough that there is almost no
tpc> incentive to do things any different.
The problem is that USBAUDIO.SYS does not support USB MIDI
specification under Win2000, not talking about many users still using
w98. This userbase is too large to be ignored. That is one of the
reasons why every commercial USB MIDI device on the market delivers
custom drivers.
David
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