Hi all, I have a ViewSonic monitor that has a built-in webcam. It appears as a usb device, with ID 04f2:b021. Some other Chicony webcams are tagged as supported but this one isn't. Yet, I've come across only one previous posting about this webcam: he was given advice on how to load the module. He didn't reply to that advice, so we don't know if it worked for him or not...
I have successfully compiled and configured my uvc module, but not everything is working. I can use luvcview and have pretty good picture. There are some error messages with each frame, also the produced jpeg has "Invalid SOS parameters for sequential JPEG." But it seems these messages can be ignored. However, when I try to use it with amsn things turn more gloomy. If I have amsn configured to use my old usb webcam (uses gspca) it starts well, and in the camera selection panel I see the ViewSonic 1.3M webcam, and selecting it also gives a nice picture -- like in luvcview. But right after closing this video config window, and at any subsequent start of the application there seems to be some (re)initialization problem, and amsn no longer works. It terminates with the following rror messages: ioctl: VIDIOC_S_CTRL(id=9963776;value=25536): Input/output error ioctl: VIDIOC_S_CTRL(id=9963777;value=32768): Input/output error Not a JPEG file: starts with 0x9a 0x67 Oops: malloc_video_bufs is 1 (expected 0) [utils/linux/capture/libng/grab-ng.c:malloc_bufs_check:235] Oops: processes is 1 (expected 0) [utils/linux/capture/libng/convert.c:process_check:179] The amsn developers say it must be a bug in the driver module, and aren't very enthusiastic in checking their code. I wonder if this is a known problem with this or other webcams? Does anyone have an idea how to work around this? I'd even be happy to have some suggestions which applications to use to test the webcam, to be able to compile more concise bug report... Thanks, Aurel --------------------------------------------------------- Web: http://www.szfki.hu/~gabrisa "Ha ezt el tudja olvasni, minden bizonnyal tud magyarul." --------------------------------------------------------- _______________________________________________ Linux-uvc-devel mailing list [email protected] https://lists.berlios.de/mailman/listinfo/linux-uvc-devel
