On Thu, Feb 10, 2011 at 12:13:18AM +0000, mark205@xxxxxxxx wrote: > > Hi there, > > I have a problem. I'm trying to use the Microsoft Kinect with old > processors and also with small devices such as mobile phones that run > linux. > > The openkinect driver uses the libusb library in order to get the data > from the Kinect. I'm interested at the depth/rgb video data (even only > one image). The camera has two high-bandwidth isochrnonous endpoints, > each of which does two 960-byte packets per microframe > > The main problem is that, during the initialization phase I get the > errno 28: not enough free bandwidth available to schedule the > isochronous packets of the transfer. > > The output of lsusb -v is this: > > http://pastebin.com/b4r2aSk4 > > There is this comment on the MUSB host controller driver: > > /* Bits 11& 12 of wMaxPacketSize encode high bandwidth multiplier. > * Some musb cores don't support high bandwidth ISO transfers; and > * we don't (yet!) support high bandwidth interrupt transfers. > */ > > Do you know if is it possible to modify maybe the openkinect driver in > order to get at least one depth image. It's not really a "driver" so much as just a userspace program using libusb, right? Perhaps a "real" kernel driver should be written for the device that exports the data properly to userspace through the video apis instead? Using musb for isoc endpoints that require lots of bandwidth on low-speed processors might just not be possible, you have to take into consideration your harware capabilities first. good luck, greg k-h -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
