HI, We have been doing this work and were successfull as well with lots of delay ~1-2 secs.The tablet kernel needs to have the uvc-usb and v4l2 module enabled in that.The main challenge is that even if you are able to build the lernel at your own by enabling the uvc support from the make menu-config , no tablet distributor will allow you to do it and hence no commercial solution for it. Ofcourse you have to root your device but many of us knows that rooting voids the warranty.All i can hint here is that rooting the device cleverly(hacking the system/su code and calling it from the JNI) and having inserted the uvc usb and v4l2 driver the frames can be grabbed upto to the Android UI Framework .You just need to create the images out of the raw data coming out of video node being created and display it on the UI continuously.Lot of raw hacks and dirty tricks to get this done. Also the device must be hot pluggable for any USB UVC device.There are lot of device which you can readily use - Acer Iconia Tab A501 is one of them. The biggest hurdle you can face is to get the creation of node- /dev/video0 being formed as soon you plug in the uvc camera.remember this.This is the thumb rule for identifying the tablets which you can work upon.
Rgds, softy "..pain is temporary.....quitting lasts forever......" On Sun, Mar 18, 2012 at 7:35 PM, lucrus <lucio.cru...@gmail.com> wrote: > > > On Sunday, March 18, 2012 10:28:10 AM UTC+1, Hedwin wrote: >> >> UVC is already part of the standard kernel but you need to configure the >> kernel to use it of course. >> > > Assuming you refer to "make menuconfig" and similar, the problem is just > that: I'm looking for a way to use a UVC webcam from an app without > requiring users to root their devices, recompile the kernel, install it, > install v4l and then install my app. I can reach that point sometime in the > future in two ways: > 1. have the UVC driver included by default into the Android default > kernel, and v4l included by default at least in some Android distributions > 2. have the UVC driver and v4l ported to a static Dalvik library I link to > my app > > Now I have little clue about which of those two options is feasible, if > any, so I ask your opinions about that. > > -- > unsubscribe: android-kernel+unsubscr...@googlegroups.com > website: http://groups.google.com/group/android-kernel > -- unsubscribe: android-kernel+unsubscr...@googlegroups.com website: http://groups.google.com/group/android-kernel
