Hi Ramesh, On Wednesday 23 December 2009 12:10:24 Ramesh Rajagopal wrote: > Hi, > I want my webcam to provide two streaming interfaces one with ISOC transfer, > another with BULK transfer. On the fly user can choose any of the transfer > and do capture. I am planning to try like following > > One control interface with interrupt endpoint for status. > Two streaming interface, one with alternate settings for ISOC with > supported formats(MJPEG, YUYV) > another video streaming interface without alternate settings for BULK > transfer with supported formats. > > First off all, is it possible to try this practically ? Will the host be > able to handle both the streamings ?
Yes, but only if the two streaming interfaces are associated with different UVC input or output terminals in the control interface. > I tried in the above way, the camera enumeration seemed successful, however > I did get only one device on the host (/dev/vide0). I hope for two streaming > interfaces you should get two devices on the host > isn't it? I suspect that you're trying to use two different streaming interfaces with the same USB output terminal. That's not possible. -- Regards, Laurent Pinchart _______________________________________________ Linux-uvc-devel mailing list Linux-uvc-devel@lists.berlios.de https://lists.berlios.de/mailman/listinfo/linux-uvc-devel
