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. > I tried to set the register in order to use the 15 hz framerate instead > of the 30 hz but the error I get happens during the initialization phase. > > If you need more info I'm here :) I have report from other people about the same. MUSB driver isn't really good with high-bandwidth ISO as of today. To get it fully working, you'd also need double buffering and I'm not sure how that's supported on the host part of the driver. Which CPU are you using BTW ? and more importantly, which version of MUSB RTL ? -- balbi -- 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
