On Wed, Mar 31, 2010 at 08:16:25PM +0800, Gallon Fr wrote:
> Whoops!That stumped me.I'm afraid Fedora 12 runs on a "module
> build-in" kernel,(I don't know the terminology so the strange
> phrase) cuz I can find nothing about ehci or uhci in the module
> list.AND, I don't know how to remove a "build-in" module.I tried to
> disable USB2.0 support in the BIOS,but the OEM motherboard stopped
> me.
Oops. Yeah! Same here. Modern kernels apparently have it built in. No
there is no easy way to remove it when it's builtin. You'd have to
build your own kernel, but for this simple test it isn't worth the
trouble for you to do that...
So still we're convinced that while some cameras remove formats from
their list-of-supported-formats depending on the USB connection speed,
your camera is a bit weird and switches the list completely when on
a full-speed (usb-1.1, 12Mbps) connection.
So, your application will have to handle the mjpeg stream. It's not
that difficult, but you'll have to link against libjpeg to decode
it. Whether Libjpeg can decode directly into yuv I don't know.
For testing/development purposes I suggest you find a camera that you
can connect to your PC that also supports mjpeg there.....
Roger.
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