[openbeos-midi] Re: 2nd Version

  • From: Jerome Leveque <jerl1@xxxxxxx>
  • To: openbeos-midi@xxxxxxxxxxxxx
  • Date: Sun, 12 Jan 2003 17:32:07 +0100

>Hi Jerome,
>> Test it and tell me if that work with your computer.
>I used Be's midi_server and libmidi2.so and started PatchBay. I also
>used the VirtualMidi driver because I don't have a driver for my
>soundcard. The PatchBay screen correctly shows the endpoints that
>the midi_server makes, and the endpoints that your program makes. So
>I hooked up a MidiKeyboard program and InternalMidi, and connected
>them to the VirtualMidi buses. Then I started playing. But after a
>few key presses, my whole system froze up. The midi_server was going
>nuts, and kept on sending many many MIDI events to the endpoints. I
>had to reset my computer to make it work again ;-) (I did not check
>whether this also happens without your app.)

I don't know this is the answer of your problem but VirtualMidi create device 
/dev/midi/* or just create BMidiEndPoint, if it don't that won't work because 
our code 
send data to *file* that represent hardware EndPoint. But I will try to 
VirtualMidi and see if that work with my computer.

>I haven't studied the MIDI driver protocol enough to comment on your
>code, but I do have a little suggestion about the thread. In the
>MidiPortProducer constructor, you fill in a Poducer_Thread_Data
>structure, and you pass that to spawn_thread. I understand why you
>are doing this, but there is a much simpler solution. I suggest you
>do it like this:

That really a better idea I will made it.


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