[Printing-architecture] Google Summer of Code 2014 - IPP-over-USB printer support - Joint project idea for OpenPrinting and the kernel

[Michael Sweet]

Greg,

On Feb 25, 2014, at 8:47 PM, Greg KH <greg at kroah.com> wrote:
> ...
> So you want to do this as a userspace library talking directly to the
> USB device through usbfs/libusb?  Or should the kernel provide a basic
> "pipe-like" functionality to the hardware to make it easier for things
> to be queued up to the device?

libusb is enough.

> Is there a pointer to the spec somewhere so that I can see what is
> needed here?

http://www.usb.org/developers/devclass_docs

>>> Second,
>>> I want to suggest this as a Google Summer of Code project, asking for
>>> mentors on the kernel side. Mentoring Organization will be the Linux
>>> Foundation, hosting projects for both OpenPrinting and the kernel.
>> 
>> This will make an excellent SoC project, but you'll need someone
>> familiar with Avahi, libusb, HTTP, systemd, and general networking for
>> this.  This isn't a kernel project.
> 
> That's a non-trivial set of experience to try to find, good luck :)

Agreed.

> And why systemd?  What is needed from it for this?

Just for the launch-on-demand functionality.  Not absolutely required, but it helps to minimize the overall "weight" of the OS when you aren't printing constantly...

_________________________________________________________
Michael Sweet, Senior Printing System Engineer, PWG Chair

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