I am looking forward to develop a driver (probably virtual) allowing to read audio streams within the computer (to modify MIDI streams actually), to send them to a software, after being analyzed by another part of the program.
The point is that, as much as I looked over Mac OS X documentation about drivers, I don't seem to find much practical information. I know that the Windows documentation is far better and much more explicit, but can I rely on that ?
So, do you have any information about virtual driver development on Mac OS X ?
Thanks in advance.
Windows drivers are likely to be very different from OSX.
OSX provides IOKit for drivers and has an IOAudioFamily interface, but I don't think it will be for MIDI. You may, however, be able to use the USB interface (IOUSBFamily) and go from there, assuming you're receiving the signals via a midi-USB cable.
The Apple docs aren't bad, but finding what's relevant is not so easy!
Developing a USB driver will involve creating a Kernel Extension (Kext) in C++ and subclassing the appropriate interface, minimising the amount of code you'll have to write.
Once you've read that, this tutorial for creating a device driver may be useful.
If you still don't like the Apple docs, I recommend getting the book "OSX and iOS Kernel Programming" by Halvorson & Clarke which, despite its title, is mostly concerned with developing drivers.
I am looking forward to develop a driver (probably virtual) allowing to read audio streams within the computer (to modify MIDI streams actually), to send them to a software, after being analyzed by another part of the program.
The point is that, as much as I looked over Mac OS X documentation about drivers, I don't seem to find much practical information. I know that the Windows documentation is far better and much more explicit, but can I rely on that ?
So, do you have any information about virtual driver development on Mac OS X ?
Thanks in advance.
Windows drivers are likely to be very different from OSX.
OSX provides IOKit for drivers and has an IOAudioFamily interface, but I don't think it will be for MIDI. You may, however, be able to use the USB interface (IOUSBFamily) and go from there, assuming you're receiving the signals via a midi-USB cable.
The Apple docs aren't bad, but finding what's relevant is not so easy!
Developing a USB driver will involve creating a Kernel Extension (Kext) in C++ and subclassing the appropriate interface, minimising the amount of code you'll have to write.
Once you've read that, this tutorial for creating a device driver may be useful.
If you still don't like the Apple docs, I recommend getting the book "OSX and iOS Kernel Programming" by Halvorson & Clarke which, despite its title, is mostly concerned with developing drivers.
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