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    SubjectRe: Termination of the Philips Webcam Driver (pwc)
    Date
    On Friday 27 August 2004 05:49 pm, Marek Habersack wrote:
    > On Fri, Aug 27, 2004 at 11:42:30PM +0200, Nemosoft Unv. scribbled:
    > [snip]
    > > > So I'd personally much prefer the user mode approach. At that point it's
    > > > still closed-source, but at least there is not even a whiff of a "hook"
    > > > inside the kernel.
    > >
    > > My problem with that is that it makes using such cams a lot harder for both
    > > users and developers of webcam tools. Basicly, every tool that wanted to
    > > use webcam X that has some binary-only library would need to specifically
    > > support it, use probing routines, check which formats are supported, set up
    > > the decompressor, push the data through it, etc. Conversely, every user
    > > that wanted to use webcams X, Y and Z would need to check first if they are
    > > all supported by the program(s) he would like to use.
    > Forgive me if I'm talking bullshit, but wouldn't it be possible for you to
    > route the stream through a device with an entry in /dev/ which would be
    > opened by a userspace daemon which would take the stream from the in-kernel
    > pwc driver, apply all the codec magic to it, and then give it back to the
    > driver in the kernel so that the application that grabs the frames would get
    > the processed data? That way you would need only one userlevel daemon to
    > support the codecs and all the other apps would just read the data from the
    > framebuffer.
    >

    I wonder if something like uinput is possible/desirable for v4l?

    --
    Dmitry
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