On Tue, 2010-03-09 at 12:51 +0100, Laurent Pinchart wrote: > Hi, > > On Monday 01 March 2010 11:46:06 Per Thomas Jahr wrote: > > > > I just wanted to report that the IPEVO Point 2 View webcam works fine > > with uvcvideo. I've tested it with various applications (Skype, UCView, > > Flash ...) and found that it works in all except "Cheese Webcam Booth". > > What happens in Cheese ?
I just see a test picture, but I have a feeling that it is related to another v4l2 device (tv tuner). Cheese seems to be stuck on /dev/video0 for some reason. It never switches over to /dev/video1 where the webcam is (even when I change devices in preferences). > > This message always shows in dmesg once I start one of the video apps: > > uvcvideo: > > Failed to query (135) UVC control 11 (unit 3) : -32 (exp. 1). > > (but it works ok) > > That's the "White Balance Temperature, Auto" control. The driver tries to > retrieve its default value. According to the UVC spec, supporting that > request > is mandatory on that control, so it's probably a webcam bug. No big deal > though. > > > There are two buttons on the webcam. One of them is to set focus and the > > other is for taking a picture. The one that sets focus works as > > expected, but nothing happens when I press the snapshot button. Should > > it be supported? > > Yes it should. The uvcvideo creates an evdev device when you plug your camera > in: > > > input: IPEVO Point 2 View as > > /devices/pci0000:00/0000:00:1d.7/usb2/2-4/2-4.4/2-4.4:1.0/input/input12 > > The device is then used to report the KEY_CAMERA event when the button is > pressed. The event might not be mapped to any action on your system though. I'm running Fedora 12. How can I test that the event comes through to evdev? Tried with "xev", but nothing there. > > Also, about setting the focus: the hardware button for this works, but is it > > possible to control focus from software? It seems that the software that > > follows the webcam supports this (you click on the part of the image that > > you want in focus). > > It should be possible yes. Your camera has two focus controls (auto-focus and > absolute focus) that are accessible through the V4L2_CID_FOCUS_AUTO and > V4L2_CID_FOCUS_ABSOLUTE V4L2 controls. OK. Thanks Per Thomas _______________________________________________ Linux-uvc-devel mailing list Linux-uvc-devel@lists.berlios.de https://lists.berlios.de/mailman/listinfo/linux-uvc-devel
